diff --git a/app/app.js b/app/app.js
index 8b17043..0dcb7f9 100644
--- a/app/app.js
+++ b/app/app.js
@@ -15,23 +15,35 @@
     .config(function($stateProvider, $urlRouterProvider) {
 
         $urlRouterProvider.otherwise('/');
-        
-        $stateProvider
+         $stateProvider
+            .state('index', {
+                abstract: true,
+                views: {
+                    'sidebar': {
+                        templateUrl: 'partials/sidebar/sidebar.html',
+                        controller: 'SidebarCtrl'
+                    },
+                    'navbar': {
+                        templateUrl: 'partials/sidebar/navbar.html',
+                        controller: 'NavbarCtrl',
+                        controllerAs: 'vm'
+                    },
+                }
+            })
             .state('login', {
                 url: '/login',
                 views: {
                     content: {
-                templateUrl: 'partials/login/login.html',
-                controller: 'loginCtrl',
-                controllerAs: 'vm'
+                        templateUrl: 'partials/login/login.html',
+                        controller: 'loginCtrl',
+                        controllerAs: 'vm'
+                    }
                 }
-            }
-        })
+            })
     })
 
     .run(function ($rootScope) {
         $rootScope.domainUrl = 'Localhost:3000';
-        $rootScope.professorId = '56f5fd3a20047f3c15b05f0e';
     });
 
 })();
diff --git a/app/index.html b/app/index.html
index 7050d4a..607e1ce 100644
--- a/app/index.html
+++ b/app/index.html
@@ -55,6 +55,7 @@
         <!-- ====================================================-->
         <script src="app.js"></script>
         <script src="partials/sidebar/sidebar.controllers.js"></script>
+        <script src="partials/sidebar/navbar.controllers.js"></script>
 
         <script src="partials/course/course.module.js"></script>
         <script src="partials/course/course_create.controller.js"></script>
@@ -64,6 +65,7 @@
         <script src="partials/login/login.module.js"></script>
         <script src="partials/login/login.controllers.js"></script>
         <script src="partials/login/login.services.js"></script>
+        <script src="partials/login/authentication.service.js"></script>
 
         <script src="partials/professor/professor.module.js"></script>
         <script src="partials/professor/professor_create.controller.js"></script>
diff --git a/app/partials/course/course.module.js b/app/partials/course/course.module.js
index e4899f4..386f080 100644
--- a/app/partials/course/course.module.js
+++ b/app/partials/course/course.module.js
@@ -15,43 +15,28 @@
     getRoutes.$inject = ['$stateProvider', '$urlRouterProvider'];
     function getRoutes($stateProvider, $urlRouterProvider){
         $urlRouterProvider.otherwise('/CourseList');
-
         $stateProvider
            .state('CourseList', {
+                parent: 'index',
                 url: '/CourseList',
                 views: {
-                    sidebar: {
-                        templateUrl: 'partials/sidebar/sidebar.html',
-                        controller: 'SidebarCtrl'
-                    },
-                    navbar: {
-                        templateUrl: 'partials/sidebar/navbar.html'
-                    },
-                    content: {
+                    'content@': {
                         templateUrl: 'partials/course/course_list.html',
                         controller: 'CourseListCtrl',
                         controllerAs: "vm"
                     }
                 }
             })
-            
             .state('CourseCreate', {
+                parent:'index',
                 url: '/CourseCreate',
                 views: {
-                    sidebar: {
-                        templateUrl: 'partials/sidebar/sidebar.html',
-                        controller: 'SidebarCtrl'
-                    },
-                    navbar: {
-                        templateUrl: 'partials/sidebar/navbar.html'
-                    },
-                    content: {
+                    'content@': {
                         templateUrl: 'partials/course/course_create.html',
                         controller: 'CourseCreateCtrl',
                         controllerAs: "vm"
                     }
                 }
             })
-            
     };
 })();
diff --git a/app/partials/course/course.services.js b/app/partials/course/course.services.js
index 00a023a..b5cb9f4 100644
--- a/app/partials/course/course.services.js
+++ b/app/partials/course/course.services.js
@@ -7,6 +7,13 @@
 
     courses.$inject = ['$resource','$rootScope'];
     function courses($resource, $rootScope){
-        return $resource('http://'+$rootScope.domainUrl+'/professors/:id/courses', null);
+        return $resource('http://'+$rootScope.domainUrl+'/professors/:id/courses', {}, {
+        		get: {
+        			method: 'GET',
+        			headers: {
+				    	Authorization: 'Bearer '+ authentication.getToken()
+				    }
+    			}
+			});
     };
-})();
+})();
\ No newline at end of file
diff --git a/app/partials/course/course_create.controller.js b/app/partials/course/course_create.controller.js
index b349aa4..bee4a18 100644
--- a/app/partials/course/course_create.controller.js
+++ b/app/partials/course/course_create.controller.js
@@ -6,11 +6,12 @@
         .controller('CourseCreateCtrl', CourseCreateCtrl)
     
     CourseCreateCtrl.$inject = 
-    ['$scope', '$rootScope', '$modal', '$state', 'professors'];
-    function CourseCreateCtrl($scope, $rootScope, $modal, $state, professors) {
+    ['$scope', '$modal', '$state', 'professors', 'authentication'];
+    function CourseCreateCtrl($scope, $modal, $state, professors, authentication) {
         var vm = this;
         $scope.mensaje = "";
-        var professorid = $rootScope.professorId;
+        var user = authentication.currentUser();
+        var professorid = user._id;
 
         professors.get({ id: professorid }, 
             function (successResult){
diff --git a/app/partials/course/course_list.controller.js b/app/partials/course/course_list.controller.js
index 1da9d73..2bcfe60 100644
--- a/app/partials/course/course_list.controller.js
+++ b/app/partials/course/course_list.controller.js
@@ -6,10 +6,11 @@
         .controller('CourseListCtrl',CourseListCtrl)
         
     CourseListCtrl.$inject = 
-    ['$scope', '$rootScope', '$state', 'professors', '$modal', 'profesorSeleccionado', 'selectedCourse'];
-    function CourseListCtrl($scope, $rootScope, $state, professors, $modal, profesorSeleccionado, selectedCourse) {
+    ['$scope', '$state', 'professors', '$modal', 'profesorSeleccionado', 'selectedCourse', 'authentication'];
+    function CourseListCtrl($scope, $state, professors, $modal, profesorSeleccionado, selectedCourse, authentication) {
         var vm = this;
-        var professorid = $rootScope.professorId;
+        var user = authentication.currentUser();
+        var professorid = user._id;
 
         professors.get({ id: professorid }, 
             function (successResult){
diff --git a/app/partials/course/course_list.html b/app/partials/course/course_list.html
index 0bb1a28..a300024 100644
--- a/app/partials/course/course_list.html
+++ b/app/partials/course/course_list.html
@@ -8,28 +8,15 @@
                 <tr>
                     <th width="10%">
                         Código
-                        <span ng-show="sortType == 'code' && 
-                        !sortReverse" class="fa fa-caret-down"></span>
-                        <span ng-show="sortType == 'code' && 
-                        sortReverse" class="fa fa-caret-up"></span>
                     </th>
                     <th width="20%">
                         Nombre
-                        <span ng-show="sortType == 'name' && 
-                        !sortReverse" class="fa fa-caret-down"></span>
-                        <span ng-show="sortType == 'name' && 
-                        sortReverse" class="fa fa-caret-up"></span>
                     </th>
                     <th width="10%">
                         Creditos
-                        <span ng-show="sortType == 'credits' &&
-                        !sortReverse" class="fa fa-caret-down"></span>
-                        <span ng-show="sortType == 'credits' && sortReverse" class="fa fa-caret-up"></span>
                     </th>
                     <th width="40%" style="text-align: center">
-                
-                        Descripción  
-    
+                        Descripción
                     </th>
                     <th width="10%" style="text-align: center">
                         Secciones
@@ -47,7 +34,7 @@
                     <td style="vertical-align:middle">{{ course.description }}</td>
                      <td style="text-align: center">
                         <span 
-                        title="Click aqui para ver Secciones" 
+                        title="Haga click para listar las secciones de esta materia" 
                         class="glyphicon glyphicon-list" 
                         aria-hidden="true" 
                         ng-click="vm.listarSecciones($index)" 
@@ -55,7 +42,7 @@
                     </td>
                     <td style="text-align: center">
                         <span 
-                        title="Click aqui para Eliminar la Materia" 
+                        title="Haga click para eliminar esta materia" 
                         class="glyphicon glyphicon-remove" 
                         aria-hidden="true" 
                         ng-click="vm.eliminarMateriaModal($index)" 
diff --git a/app/partials/login/authentication.service.js b/app/partials/login/authentication.service.js
new file mode 100644
index 0000000..0bca65d
--- /dev/null
+++ b/app/partials/login/authentication.service.js
@@ -0,0 +1,65 @@
+(function(){
+    'use strict';
+  
+    angular
+        .module('app.login')
+        .service('authentication', authentication);
+
+    authentication.$inject = ['$http', '$window'];
+    function authentication ($http, $window) {
+
+        var saveToken = function (token) {
+            $window.localStorage['mean-token'] = token;
+        };
+
+        var getToken = function () {
+            return $window.localStorage['mean-token'];
+        };
+
+        var logout = function() {
+            $window.localStorage.removeItem('mean-token');
+        };
+
+        var isLoggedIn = function() {
+            var token = getToken();
+            var payload;
+
+            if(token){
+                payload = token.split('.')[1];
+                payload = $window.atob(payload);
+                payload = JSON.parse(payload);
+
+                return payload.exp > Date.now() / 1000;
+            } else {
+                return false;
+            }
+        };
+
+        var currentUser = function() {
+            if(isLoggedIn()){
+                var token = getToken();
+                var payload = token.split('.')[1];
+                payload = $window.atob(payload);
+                payload = JSON.parse(payload);
+                return {
+                    _id: payload._id,
+                    role: payload.role
+                };
+            }
+        };
+
+        var login = function(user) {
+            return $http.post('http://'+$rootScope.domainUrl+'/login', user).success(function(data) {
+                saveToken(data.token);
+            });
+        };
+
+        return {
+            saveToken : saveToken,
+            getToken : getToken,
+            logout : logout,
+            isLoggedIn : isLoggedIn,
+            currentUser : currentUser
+        };
+    }
+})();
\ No newline at end of file
diff --git a/app/partials/login/login.controllers.js b/app/partials/login/login.controllers.js
index 42df954..deea921 100644
--- a/app/partials/login/login.controllers.js
+++ b/app/partials/login/login.controllers.js
@@ -5,69 +5,49 @@
         .module('app.login')
         .controller('loginCtrl', loginCtrl)
 
-    loginCtrl.$inject = ['$rootScope', '$scope', '$state'];
-    function loginCtrl($rootScope, $scope, $state){
+    loginCtrl.$inject = ['$scope', '$state', 'login', 'authentication', '$modal'];
+    function loginCtrl($scope, $state, login, authentication, $modal){
         var vm = this;
-        vm.user;
+        vm.credentials = {};
         
         vm.submit = function() {
             if (vm.data_input_form.$valid){
-                vm.pkg = {         
-                    "Nickname": vm.user.nickname,
-                    "Password": vm.user.password                         
+                var professor = {         
+                    "id": vm.user.nickname,
+                    "password": vm.user.password                         
                 }; 
 
-                /*$rootScope.mensaje = "";
-                $rootScope.bcancel = false;
-                $scope.modalInstance = $modal.open({
-                    animation: $rootScope.animationsEnabled,
-                    templateUrl: 'LoginModal.html',
-                    scope: $scope,
-                    size: 'sm',
-                    resolve: {
-                        items: function () {
-                            return $rootScope.items;
-                        }
-                    }
-                });
-                
-                Login.save(vm.pkg, 
-                    function(data){ 
-                      if(data.Data._value != null){
-                            $rootScope.actOk = true;
-                            $rootScope.urlLo = 'listarProfesor';
-                            $rootScope.bcancel = false;
-                            
-                        }else{
-                            $rootScope.bcancel = true;
-                            $rootScope.mensaje = data.Data._error;
-                        }
-                     },
-                     function(data){
-                         verificar = data.Data; 
-                            if(verificar){
-                                alert("no existe el usuario");
-                            }
-                })
-                GetRol.get({id:vm.user.Nickname}, 
+                login.save(professor,
                     function(data){
-                        $rootScope.role = data.Data;
-                    },
-                    function(){
+                        authentication.saveToken(data.token);
+                        var permission = authentication.currentUser();
+                        if(permission.role=='admin'){
+                            $state.go('ProfessorList');
+                        };
+                        if(permission.role=='professor'){
+                            $state.go('CourseList');
+                        };
                         
-                });*/
-            $state.go('CourseList');
+                    },
+                    function(data){
+                        vm.message = 'Usuario/Clave incorrecto. Por favor intente de nuevo.'
+                        vm.botonOk = true;
+                        $scope.modalInstance = $modal.open({
+                            templateUrl: 
+                            '/partials/login/modal/login_modal.html',
+                            scope: $scope,
+                            size: 'sm',
+                            resolve: {
+                                items: function () {
+                                }
+                            }
+                        });
+                    });
             }
         };
 
-        /*$rootScope.open = function($event) {
-            $event.preventDefault();
-            $event.stopPropagation();
-            $rootScope.opened = true;
-        };*/
-
-        $scope.ok = function (urlLo) {
-            $location.url(urlLo);
+        $scope.ok = function () {
+            $state.reload();
             $scope.modalInstance.dismiss('cancel');
         };
        
diff --git a/app/partials/login/login.html b/app/partials/login/login.html
index 5a60f35..b444687 100644
--- a/app/partials/login/login.html
+++ b/app/partials/login/login.html
@@ -21,7 +21,7 @@
                 </div>
                 <div class="col-md-4 column">
                     <label for="password">Contraseña</label>
-                    <input type="password" class="form-control" id="password" name="password" ng-model="vm.user.password" maxlength="8" required/>
+                    <input type="password" class="form-control" id="password" name="password" ng-model="vm.user.password" required/>
                     <div ng-show=false> {{ vm.password = vm.user.Password }}</div>
                     <div class="error" ng-show="vm.submitted && vm.data_input_form.password.$invalid">
                         <small class="error" ng-show="vm.data_input_form.password.$error.required">
diff --git a/app/partials/login/login.services.js b/app/partials/login/login.services.js
index 8debeed..dd521c0 100644
--- a/app/partials/login/login.services.js
+++ b/app/partials/login/login.services.js
@@ -3,47 +3,12 @@
 
     angular
         .module('app.login')
-        .factory('Login', Login)
-        .factory('GetRol', GetRol)
-        .factory('hash', hash)
-        .value('algoritmo','SHA-1')
+        .factory('login', login)
         .value('user',{})
         .value('id',{})
 
-    
-    Login.$inject = ['$resource','$rootScope'];
-    function Login($resource, $rootScope){
-        return $resource('http://'+$rootScope.domainUrl+'/api/VerifyUser');  
+    login.$inject = ['$resource','$rootScope'];
+    function login($resource, $rootScope){
+        return $resource('http://'+$rootScope.domainUrl+'/login');  
     };
-
-    GetRol.$inject = ['$resource','$rootScope'];
-    function GetRol($resource, $rootScope){
-        return $resource('http://'+$rootScope.domainUrl+'/api/User/:id');
-    };
-    
-    hash.$inject = ['algoritmo'];
-    function hash(algoritmo){
-
-        var hashFunction;
-
-        if (algoritmo==="MD5") {
-            hashFunction=CryptoJS.MD5;
-        } else  if (algoritmo==="SHA-1") {
-            hashFunction=CryptoJS.SHA1;
-        } else  if (algoritmo==="SHA-2-256") {
-            hashFunction=CryptoJS.SHA256;
-        } else  if (algoritmo==="SHA-2-512") {
-            hashFunction=CryptoJS.SHA512;
-        } else {
-            throw Error("El tipo de algoritmo no es válido:"+algoritmo);
-        }
-
-        var hash=function(message) {
-            var objHashResult=hashFunction(message);
-            var strHashResult=objHashResult.toString(CryptoJS.enc.Base64);
-
-            return strHashResult;
-        }
-        return hash;
-    };
-})();
+})();
\ No newline at end of file
diff --git a/app/partials/login/modal/login_modal.html b/app/partials/login/modal/login_modal.html
new file mode 100644
index 0000000..8441a08
--- /dev/null
+++ b/app/partials/login/modal/login_modal.html
@@ -0,0 +1,10 @@
+<div class="modal-header">
+    <h3 class="modal-title">Error</h3>
+</div>
+<div style="text-align: center" class="modal-body">
+    {{ vm.message }}
+</div>
+<div class="modal-footer">
+    <button class="btn btn-primary" ng-show="vm.botonOk" type="button" 
+    ng-click="ok()">Aceptar</button>
+</div>
\ No newline at end of file
diff --git a/app/partials/professor/modal/create_professor_modal.html b/app/partials/professor/modal/create_professor_modal.html
index ae039ab..e6e7e91 100644
--- a/app/partials/professor/modal/create_professor_modal.html
+++ b/app/partials/professor/modal/create_professor_modal.html
@@ -2,9 +2,9 @@
     <h3 class="modal-title">Crear Profesor</h3>
 </div>
 <div style="text-align: center" class="modal-body">
-    {{ mensaje }}
+    {{ vm.mensaje }}
 </div>
 <div  class="modal-footer">
-    <button class="btn btn-primary" ng-show="botonOk" type="button" 
-    ng-click="ok(urlLo)">OK</button>
+    <button class="btn btn-primary" ng-show="vm.botonOk" type="button" 
+    ng-click="ok()">OK</button>
 </div>
\ No newline at end of file
diff --git a/app/partials/professor/modal/list_professor_modal.html b/app/partials/professor/modal/list_professor_modal.html
index 4036b7f..477d0b1 100644
--- a/app/partials/professor/modal/list_professor_modal.html
+++ b/app/partials/professor/modal/list_professor_modal.html
@@ -2,13 +2,19 @@
     <h3 class="modal-title">Eliminar Profesor</h3>
 </div>
 <div style="text-align: center" class="modal-body">
-    {{ mensaje }}
+    {{ vm.mensaje }}
 </div>
 <div  class="modal-footer">
-	<button class="btn btn-primary" ng-show="acceptButton" type="button" 
-	ng-click="ok(urlLo)">Aceptar</button>
-    <button class="btn btn-primary" ng-show="botonOK"  type="button" 
+	<button class="btn btn-primary" 
+	ng-show="vm.acceptButton" 
+	type="button" 
+	ng-click="ok()">Aceptar</button>
+    <button class="btn btn-primary" 
+    ng-show="vm.botonOK"  
+    type="button" 
     ng-click="vm.eliminarProfesor(index)">OK</button>
-    <button class="btn btn-warning" ng-show="botonCancelar" type="button" 
+    <button class="btn btn-warning" 
+    ng-show="vm.botonCancelar" 
+    type="button" 
     ng-click="cancel()">Cancel</button>
 </div>
\ No newline at end of file
diff --git a/app/partials/professor/modal/update_professor_modal.html b/app/partials/professor/modal/update_professor_modal.html
index f863686..808cc76 100644
--- a/app/partials/professor/modal/update_professor_modal.html
+++ b/app/partials/professor/modal/update_professor_modal.html
@@ -2,11 +2,15 @@
     <h3 class="modal-title">Modificar Profesor</h3>
 </div>
 <div style="text-align: center" class="modal-body">
-    {{ mensaje }} 
+    {{ vm.mensaje }} 
 </div>
 <div  class="modal-footer">
-    <button class="btn btn-primary" ng-show="botonOk" type="button" 
-    ng-click="ok(urlLo)">OK</button>
-    <button class="btn btn-warning" ng-show="botonCancelar" type="button" 
+    <button class="btn btn-primary" 
+    ng-show="vm.botonOk" 
+    type="button" 
+    ng-click="ok()">OK</button>
+    <button class="btn btn-warning" 
+    ng-show="vm.botonCancelar" 
+    type="button" 
     ng-click="cancel()">Cancel</button>
 </div>
\ No newline at end of file
diff --git a/app/partials/professor/professor.module.js b/app/partials/professor/professor.module.js
index 123b6d1..732205e 100644
--- a/app/partials/professor/professor.module.js
+++ b/app/partials/professor/professor.module.js
@@ -18,17 +18,10 @@
 
         $stateProvider
             .state('ProfessorList', {
+                parent: 'index',
                 url: '/ProfessorList',
                 views: {
-                    sidebar: {
-                        templateUrl: 'partials/sidebar/sidebar.html',
-                        controller: 'SidebarCtrl'
-
-                    },
-                    navbar: {
-                        templateUrl: 'partials/sidebar/navbar.html'
-                    },
-                    content: {
+                    'content@': {
                         templateUrl: 'partials/professor/professor_list.html',
                         controller: 'ProfessorListCtrl',
                         controllerAs: 'vm'
@@ -37,16 +30,10 @@
             })
 
             .state('ProfessorCreate', {
+                parent: 'index',
                 url: '/ProfessorCreate',
                 views: {
-                    sidebar: {
-                        templateUrl: 'partials/sidebar/sidebar.html',
-                        controller: 'SidebarCtrl'
-                    },
-                    navbar: {
-                        templateUrl: 'partials/sidebar/navbar.html'
-                    },
-                    content: {
+                    'content@': {
                         templateUrl: 'partials/professor/professor_create.html',
                         controller: 'ProfessorCreateCtrl',
                         controllerAs: 'vm' 
@@ -55,16 +42,10 @@
             })
             
             .state('ProfessorUpdate', {
+                parent: 'index',
                 url: '/ProfessorUpdate',
                 views: {
-                    sidebar: {
-                      templateUrl: 'partials/sidebar/sidebar.html',
-                      controller: 'SidebarCtrl'
-                    },
-                    navbar: {
-                      templateUrl: 'partials/sidebar/navbar.html'
-                    },
-                    content: {
+                    'content@': {
                         templateUrl: 'partials/professor/professor_update.html',
                         controller: 'ProfessorUpdateCtrl',
                         controllerAs: 'vm' 
diff --git a/app/partials/professor/professor.services.js b/app/partials/professor/professor.services.js
index d2ac5d6..0676492 100644
--- a/app/partials/professor/professor.services.js
+++ b/app/partials/professor/professor.services.js
@@ -10,11 +10,34 @@
         .value('profesorSeleccionado',{})
         .value('data',{});
 
-    professors.$inject = ['$resource','$rootScope'];
-    function professors($resource, $rootScope){
-        return $resource('http://'+$rootScope.domainUrl+'/professors/:id', null, 
-            {
-                'update': {method:'PUT'}
+    professors.$inject = ['$resource','$rootScope','authentication'];
+    function professors($resource, $rootScope, authentication){
+        return $resource('http://'+$rootScope.domainUrl+'/professors/:id', {}, {
+                get: {
+                    method: 'GET',
+                    headers: {
+                        Authorization: 'Bearer '+ authentication.getToken()
+                    }
+                },
+                update: {
+                    method: 'PUT',
+                    headers: {
+                        Authorization: 'Bearer '+ authentication.getToken()
+                    }
+                },
+                delete: {
+                    method: 'DELETE',
+                    headers: {
+                        Authorization: 'Bearer '+ authentication.getToken()
+                    }
+                },
+                query: {
+                    method: 'GET',
+                    isArray:true,
+                    headers: {
+                        Authorization: 'Bearer '+ authentication.getToken()
+                    }
+                }
             });
     };
 })();
\ No newline at end of file
diff --git a/app/partials/professor/professor_create.controller.js b/app/partials/professor/professor_create.controller.js
index ac9f221..79e2a32 100644
--- a/app/partials/professor/professor_create.controller.js
+++ b/app/partials/professor/professor_create.controller.js
@@ -6,11 +6,12 @@
         .controller('ProfessorCreateCtrl', ProfessorCreateCtrl)
 
     ProfessorCreateCtrl.$inject = 
-    ['$scope','$rootScope', '$state', 'professors', '$modal'];
-    function ProfessorCreateCtrl($scope, $rootScope, $state, professors, $modal){
+    ['$scope', '$state', 'professors', '$modal','authentication'];
+    function ProfessorCreateCtrl($scope, $state, professors, $modal, authentication){
         
         var vm = this;
-        $rootScope.mensaje = "";
+        vm.botonOk = false;
+        vm.mensaje = "";
         vm.submit = function() {
 
             if (vm.data_input_form.$valid){
@@ -24,39 +25,32 @@
                     "password": vm.profesor.Password
                 };
 
-                $rootScope.botonOk = false;
                 $scope.modalInstance = $modal.open({
-                    animation: $rootScope.animationsEnabled,
                     templateUrl: 'partials/professor/modal/create_professor_modal.html',
                     scope: $scope,
                     size: 'sm',
                     resolve: {
                         items: function () {
-                            return $rootScope.items;
                         }
                     }
                 });
 
                 professors.save(professor,
-                    function(){
-                        $rootScope.botonOk = true;
-                        $rootScope.mensaje = 
+                    function(data){
+                        authentication.saveToken(data.token);
+                        vm.botonOk = true;
+                        vm.mensaje = 
                         "Profesor " + vm.profesor.Apellido + ", " + vm.profesor.Nombre + " agregado";
                     },
-
                     function(){
-                        $rootScope.botonOk = true;
-                        $rootScope.urlLo = 'listarProfesor';
-                        $rootScope.mensaje = 
+                        vm.botonOk = true;
+                        vm.mensaje = 
                         "Error al agregar al profesor " + vm.profesor.Apellido + ", " + vm.profesor.Nombre;
                     });
-            }else{
-
-                vm.submitted = true;
             }
         }
 
-        $scope.ok = function (urlLo) {
+        $scope.ok = function () {
             $state.go('ProfessorList');
             $scope.modalInstance.dismiss('cancel');
         };
diff --git a/app/partials/professor/professor_create.html b/app/partials/professor/professor_create.html
index 88a5811..eb52293 100644
--- a/app/partials/professor/professor_create.html
+++ b/app/partials/professor/professor_create.html
@@ -78,7 +78,7 @@
                     </div>
                     <div class="col-md-4 column">
                         <label for="password">Contraseña *</label>
-                        <input type="password" class="form-control" ng-model="vm.profesor.Password" maxlength="8" required/>
+                        <input type="password" class="form-control" ng-model="vm.profesor.Password" maxlength="20" required/>
                         <div class="error" ng-show="vm.submitted && vm.data_input_form.password.$invalid">
                             <small class="error" ng-show="vm.data_input_form.password.$error.required">
                                 La Contraseña del Profesor es obligatorio.
diff --git a/app/partials/professor/professor_list.controller.js b/app/partials/professor/professor_list.controller.js
index 9452554..3e2060f 100644
--- a/app/partials/professor/professor_list.controller.js
+++ b/app/partials/professor/professor_list.controller.js
@@ -6,14 +6,11 @@
         .controller('ProfessorListCtrl', ProfessorListCtrl)
 
     ProfessorListCtrl.$inject = 
-    [ '$scope', '$rootScope', '$state', 'professors', '$modal', 'profesorSeleccionado' ];
-    function ProfessorListCtrl( $scope, $rootScope, $state, professors, $modal, profesorSeleccionado ){
+    [ '$scope', '$state', 'professors', '$modal', 'profesorSeleccionado' ];
+    function ProfessorListCtrl( $scope, $state, professors, $modal, profesorSeleccionado ){
         
         var vm = this;
         vm.lista = true;
-        $rootScope.actOk = false;
-        $rootScope.loading = true;
-        $rootScope.table = false;
 
         var profesorArray = [];
         professors.query(
@@ -28,8 +25,6 @@
                         Correo: value.email
                     });
                 });
-                $rootScope.loading = false;
-                $rootScope.table = true;
                 vm.listaProfesor = profesorArray;
                 
             },
@@ -38,50 +33,42 @@
             });
 
         vm.eliminarProfesorModal = function (index) { 
-            $rootScope.index = index;
-            $rootScope.botonOK = true;
-            $rootScope.botonCancelar = true;
-            $rootScope.acceptButton = false;
+            $scope.index = index;
+            vm.botonOK = true;
+            vm.botonCancelar = true;
+            vm.acceptButton = false;
 
-            $rootScope.rsplice = false;
-            $rootScope.mensaje = "¿Seguro que desea eliminar el Profesor?";
+            vm.rsplice = false;
+            vm.mensaje = "¿Seguro que desea eliminar el Profesor?";
 
             $scope.modalInstance = $modal.open({
-                animation: $rootScope.animationsEnabled,
                 templateUrl: 'partials/professor/modal/list_professor_modal.html',
                 scope: $scope,
-                size: 'sm',
-                resolve: {
-                    items: function () {
-                        return "";
-                    }
-                }
+                size: 'sm'
             });
         };
 
         vm.eliminarProfesor = function (index) {
-
-            $rootScope.botonOK = false;
-            $rootScope.acceptButton = true;
-            $rootScope.botonCancelar = false;
+            vm.botonOK = false;
+            vm.acceptButton = true;
+            vm.botonCancelar = false;
 
             professors.delete({id: vm.profesor[index]._id}, 
                 function () {
-                    $rootScope.rsplice = true;
-                    $rootScope.mensaje = 
+                    vm.rsplice = true;
+                    vm.mensaje = 
                     "Profesor " + vm.profesor[index].name + " eliminado";
                 },
                 function () {
-                    $rootScope.listarProfesorsLoading = false;
-                    $rootScope.mensaje = 
+                    vm.mensaje = 
                     "Error eliminando al Profesor " + vm.profesor[index].name;
                 });
         };
 
         vm.removeProfesorSplice = function(index, rsplice) {
-            if(rsplice){
+            if(vm.rsplice){
                 vm.listaProfesor.splice(index, 1);
-                $rootScope.rsplice = false;
+                vm.rsplice = false;
             }
         };
 
@@ -95,13 +82,7 @@
             $state.go('ProfessorUpdate');
         };
 
-        $rootScope.open = function($event) {
-            $event.preventDefault();
-            $event.stopPropagation();
-            $rootScope.opened = true;
-        };
-
-        $scope.ok = function (urlLo) {
+        $scope.ok = function () {
             $state.reload();
             $scope.modalInstance.dismiss('cancel');
         };
@@ -109,7 +90,5 @@
         $scope.cancel = function () {
             $scope.modalInstance.dismiss('cancel');
         };
-
-        return vm;
     };
 })();
\ No newline at end of file
diff --git a/app/partials/professor/professor_list.html b/app/partials/professor/professor_list.html
index 956c020..2bfebe6 100644
--- a/app/partials/professor/professor_list.html
+++ b/app/partials/professor/professor_list.html
@@ -7,18 +7,12 @@
             <tr>
                 <th width="20%">
                     Cedula
-                    <span ng-show="sortType == 'Cedula' && !sortReverse" class="fa fa-caret-down"></span>
-                    <span ng-show="sortType == 'Cedula' && sortReverse" class="fa fa-caret-up"></span>
                 </th>
                 <th width="20%">
                     Nombre
-                    <span ng-show="sortType == 'Nombre' && !sortReverse" class="fa fa-caret-down"></span>
-                    <span ng-show="sortType == 'Nombre' && sortReverse" class="fa fa-caret-up"></span>
                 </th>
                 <th width="20%">
                     Apellido
-                    <span ng-show="sortType == 'Apellido' && !sortReverse" class="fa fa-caret-down"></span>
-                    <span ng-show="sortType == 'Apellido' && sortReverse" class="fa fa-caret-up"></span>
                 </th>
                 <th width="20%" style="text-align: center">
                     Modificar
@@ -34,10 +28,18 @@
                 <td style="vertical-align:middle">{{ profesor.Nombre }}</td>
                 <td style="vertical-align:middle">{{ profesor.Apellido }}</td>
                 <td style="text-align: center">
-                    <span title="Click aqui para Modificar un Profesor"  class="glyphicon glyphicon-edit" aria-hidden="true"  ng-click="vm.modificarProfesor($index)" style="cursor:pointer"></span>
+                    <span title="Haga click para Modificar un Profesor"  
+                    class="glyphicon glyphicon-edit" 
+                    aria-hidden="true"  
+                    ng-click="vm.modificarProfesor($index)" 
+                    style="cursor:pointer"></span>
                 </td>
                 <td style="text-align: center">
-                    <span title="Click aqui para Eliminar un Profesor" class="glyphicon glyphicon-remove" aria-hidden="true" ng-click="vm.eliminarProfesorModal($index)" style="cursor:pointer"></span>
+                    <span title="Haga click para Eliminar un Profesor" 
+                    class="glyphicon glyphicon-remove" 
+                    aria-hidden="true" 
+                    ng-click="vm.eliminarProfesorModal($index)" 
+                    style="cursor:pointer"></span>
                 </td>
             </tr>
             </tbody>
diff --git a/app/partials/professor/professor_update.controller.js b/app/partials/professor/professor_update.controller.js
index 267acef..6758341 100644
--- a/app/partials/professor/professor_update.controller.js
+++ b/app/partials/professor/professor_update.controller.js
@@ -6,13 +6,14 @@
         .controller('ProfessorUpdateCtrl', ProfessorUpdateCtrl)
 
    ProfessorUpdateCtrl.$inject = 
-    ['$scope','$rootScope', '$state', 'professors', '$modal', 'profesorSeleccionado' ];
-    function ProfessorUpdateCtrl ( $scope, $rootScope, $state, professors, $modal, profesorSeleccionado ){
+    ['$scope', '$state', 'professors', '$modal', 'profesorSeleccionado' ];
+    function ProfessorUpdateCtrl ( $scope, $state, professors, $modal, profesorSeleccionado ){
         
         var vm = this;
+        vm.botonOk = false;
+        vm.mensaje = "";
         vm.profesor = profesorSeleccionado;
-        $rootScope.mensaje = "";
-        $rootScope.actOk = false;
+
 
         vm.submit = function() {
 
@@ -26,35 +27,28 @@
                 "password": vm.profesor.Password
             };
 
-            $rootScope.botonOk = false;
             $scope.modalInstance = $modal.open({
-                animation: $rootScope.animationsEnabled,
                 templateUrl: 'partials/professor/modal/update_professor_modal.html',
                 scope: $scope,
                 size: 'sm',
-                resolve: {
-                    items: function () {
-                        return $rootScope.items;
-                    }
-                }
             });
 
             professors.update({ id: vm.profesor._id}, professor, 
                 function(){
-                    $rootScope.botonOk = true;
-                    $rootScope.botonCancelar = false;
-                    $rootScope.mensaje = 
+                    vm.botonOk = true;
+                    vm.botonCancelar = false;
+                    vm.mensaje = 
                     "Profesor " + vm.profesor.Apellido + ", " + vm.profesor.Nombre + " actualizado";
                 },
                 function(){
-                    $rootScope.botonOk = true;
-                    $rootScope.botonCancelar = false;
-                    $rootScope.mensaje = 
+                    vm.botonOk = true;
+                    vm.botonCancelar = false;
+                    vm.mensaje = 
                     "Error al modificar al profesor " + vm.profesor.Apellido + ", " + vm.profesor.Nombre;
                 });
         }
 
-        $scope.ok = function (urlLo) {
+        $scope.ok = function () {
             $state.go('ProfessorList');
             $scope.modalInstance.dismiss('cancel');
         };
diff --git a/app/partials/report/course_assist.controller.js b/app/partials/report/course_assist.controller.js
index 908430c..009d3d6 100644
--- a/app/partials/report/course_assist.controller.js
+++ b/app/partials/report/course_assist.controller.js
@@ -6,10 +6,11 @@
         .controller('CourseAssistCtrl', CourseAssistCtrl)
 
     CourseAssistCtrl.$inject = 
-    ['$scope', '$rootScope', '$state', 'professors', '$modal', 'selectedCourse'];
-    function CourseAssistCtrl($scope, $rootScope, $state, professors, $modal, selectedCourse) {
+    ['$scope', '$state', 'professors', '$modal', 'selectedCourse', 'authentication'];
+    function CourseAssistCtrl($scope, $state, professors, $modal, selectedCourse, authentication) {
         var vm = this;
-        var professorid = $rootScope.professorId;
+        var user = authentication.currentUser();
+        var professorid = user._id;
         vm.course = null;
         vm.lectures = 0;
         vm.percentage = 0;
diff --git a/app/partials/report/course_report.controller.js b/app/partials/report/course_report.controller.js
index a2d3497..88c64f2 100644
--- a/app/partials/report/course_report.controller.js
+++ b/app/partials/report/course_report.controller.js
@@ -6,10 +6,11 @@
         .controller('CourseReportCtrl', CourseReportCtrl)
 
     CourseReportCtrl.$inject = 
-    ['$scope', '$rootScope', '$state', 'professors', '$modal', 'profesorSeleccionado', 'selectedCourse'];
-    function CourseReportCtrl($scope, $rootScope, $state, professors, $modal, profesorSeleccionado, selectedCourse) {
+    ['$scope', '$state', 'professors', '$modal', 'profesorSeleccionado', 'selectedCourse', 'authentication'];
+    function CourseReportCtrl($scope, $state, professors, $modal, profesorSeleccionado, selectedCourse, authentication) {
         var vm = this;
-        var professorid = $rootScope.professorId;
+        var user = authentication.currentUser();
+        var professorid = user._id;
 
         professors.get({ id: professorid }, 
             function (successResult){
diff --git a/app/partials/report/course_report.html b/app/partials/report/course_report.html
index 381c4aa..8f41402 100644
--- a/app/partials/report/course_report.html
+++ b/app/partials/report/course_report.html
@@ -33,14 +33,14 @@
                     <td style="vertical-align:middle">{{ course.credits }}</td>
                     <td style="vertical-align:middle">{{ course.description }}</td>
                     <td style="text-align: center">
-                        <span 
+                        <span title="Haga click para ver los reportes de esta materia"
                         class="glyphicon glyphicon-list-alt" 
                         aria-hidden="true" 
                         ng-click="vm.courseReports($index)" 
                         style="cursor:pointer"></span>
                     </td> 
                     <td style="text-align: center">
-                        <span 
+                        <span title="Haga click para ver el listado de las secciones de esta materia"
                         class="glyphicon glyphicon-list" 
                         aria-hidden="true" 
                         ng-click="vm.listSections($index)" 
diff --git a/app/partials/report/report.module.js b/app/partials/report/report.module.js
index 4cb98c4..aa4b565 100644
--- a/app/partials/report/report.module.js
+++ b/app/partials/report/report.module.js
@@ -18,16 +18,10 @@
 
         $stateProvider
            .state('courseReport', {
+                parent: 'index',
                 url: '/reportesPorMateria',
                 views: {
-                    sidebar: {
-                        templateUrl: 'partials/sidebar/sidebar.html',
-                        controller: 'SidebarCtrl'
-                    },
-                    navbar: {
-                        templateUrl: 'partials/sidebar/navbar.html'
-                    },
-                    content: {
+                    'content@': {
                         templateUrl: 'partials/report/course_report.html',
                         controller: 'CourseReportCtrl',
                         controllerAs: 'vm' 
@@ -35,16 +29,10 @@
                 }
             })
            .state('sectionReport', {
+                parent: 'index',
                 url: '/reportesPorSeccion',
                 views: {
-                    sidebar: {
-                        templateUrl: 'partials/sidebar/sidebar.html',
-                        controller: 'SidebarCtrl'
-                    },
-                    navbar: {
-                        templateUrl: 'partials/sidebar/navbar.html'
-                    },
-                    content: {
+                    'content@': {
                         templateUrl: 'partials/report/section_report.html',
                         controller: 'SectionReportCtrl',
                         controllerAs: 'vm' 
@@ -52,16 +40,10 @@
                 }
             })
             .state('studentReport', {
+                parent: 'index',
                 url: '/reportesPorEstudiante',
                 views: {
-                    sidebar: {
-                        templateUrl: 'partials/sidebar/sidebar.html',
-                        controller: 'SidebarCtrl'
-                    },
-                    navbar: {
-                        templateUrl: 'partials/sidebar/navbar.html'
-                    },
-                    content: {
+                    'content@': {
                         templateUrl: 'partials/report/student_report.html',
                         controller: 'StudentReportCtrl',
                         controllerAs: 'vm'
@@ -69,16 +51,10 @@
                 }
             })
             .state('studentAssist', {
+                parent: 'index',
                 url: '/asistenciaPorEstudiante',
                 views: {
-                    sidebar: {
-                        templateUrl: 'partials/sidebar/sidebar.html',
-                        controller: 'SidebarCtrl'
-                    },
-                    navbar: {
-                        templateUrl: 'partials/sidebar/navbar.html'
-                    },
-                    content: {
+                    'content@': {
                         templateUrl: 'partials/report/student_assist.html',
                         controller: 'StudentAssistCtrl',
                         controllerAs: 'vm'
@@ -86,16 +62,10 @@
                 }
             })
             .state('sectionAssist', {
+                parent: 'index',
                 url: '/asistenciaPorSeccion',
                 views: {
-                    sidebar: {
-                        templateUrl: 'partials/sidebar/sidebar.html',
-                        controller: 'SidebarCtrl'
-                    },
-                    navbar: {
-                        templateUrl: 'partials/sidebar/navbar.html'
-                    },
-                    content: {
+                    'content@': {
                         templateUrl: 'partials/report/section_assist.html',
                         controller: 'SectionAssistCtrl',
                         controllerAs: 'vm'
@@ -103,16 +73,10 @@
                 }
             })
             .state('courseAssist', {
+                parent: 'index',
                 url: '/asistenciaPorMateria',
                 views: {
-                    sidebar: {
-                        templateUrl: 'partials/sidebar/sidebar.html',
-                        controller: 'SidebarCtrl'
-                    },
-                    navbar: {
-                        templateUrl: 'partials/sidebar/navbar.html'
-                    },
-                    content: {
+                    'content@': {
                         templateUrl: 'partials/report/course_assist.html',
                         controller: 'CourseAssistCtrl',
                         controllerAs: 'vm'
diff --git a/app/partials/report/section_assist.controller.js b/app/partials/report/section_assist.controller.js
index 81b5cf1..deb50f7 100644
--- a/app/partials/report/section_assist.controller.js
+++ b/app/partials/report/section_assist.controller.js
@@ -6,10 +6,11 @@
         .controller('SectionAssistCtrl', SectionAssistCtrl)
 
     SectionAssistCtrl.$inject = 
-    ['$scope', '$rootScope','$state', 'professors', '$modal', 'selectedCourse', 'selectedSection', 'selectedStudent'];
-    function SectionAssistCtrl($scope, $rootScope, $state, professors, $modal, selectedCourse, selectedSection, selectedStudent) {
+    ['$scope', '$state', 'professors', '$modal', 'selectedCourse', 'selectedSection', 'selectedStudent', 'authentication'];
+    function SectionAssistCtrl($scope, $state, professors, $modal, selectedCourse, selectedSection, selectedStudent, authentication) {
         var vm = this;
-        var professorid = $rootScope.professorId;
+        var user = authentication.currentUser();
+        var professorid = user._id;
         vm.section = [];
         vm.lectures = 0;
         vm.percentage = 0;
diff --git a/app/partials/report/section_assist.html b/app/partials/report/section_assist.html
index 1cafda2..81b32d3 100644
--- a/app/partials/report/section_assist.html
+++ b/app/partials/report/section_assist.html
@@ -6,9 +6,17 @@
         <div> Estadisticas </div>
         <div> Porcentaje de Asistencia: {{vm.percentage}} % </div>
         <div> Total de Dias de Clase: {{vm.lectures}} </div>
-        <br><br/>
+        <br>
     </div>
 
+    <button class = "btn-warning btn" 
+        type = "button" 
+        style = "margin: 10px"
+        ng-click = "vm.back()">
+        Regresar
+    </button>
+    <br><br/>
+
     <div ng-show="vm.flag">    
         <h4 style="color: red"> Estudiantes con menos de 75% de Asistencia </h4>
         <table class="table table-bordered table-striped">
@@ -57,11 +65,4 @@
                 </tr>
             </tbody>
         </table>
-
-    <button class = "btn-warning btn" 
-    type = "button" 
-    style = "margin: 10px"
-    ng-click = "vm.back()">
-        Regresar
-    </button>
 </div>
\ No newline at end of file
diff --git a/app/partials/report/section_report.controller.js b/app/partials/report/section_report.controller.js
index e62f06a..6f1d7b1 100644
--- a/app/partials/report/section_report.controller.js
+++ b/app/partials/report/section_report.controller.js
@@ -6,10 +6,11 @@
         .controller('SectionReportCtrl', SectionReportCtrl)
 
     SectionReportCtrl.$inject = 
-    ['$scope', '$rootScope', '$state', 'professors', '$modal', 'profesorSeleccionado', 'selectedCourse', 'selectedSection'];
-    function SectionReportCtrl($scope, $rootScope, $state, professors, $modal, profesorSeleccionado, selectedCourse, selectedSection) {
+    ['$scope', '$state', 'professors', '$modal', 'profesorSeleccionado', 'selectedCourse', 'selectedSection', 'authentication'];
+    function SectionReportCtrl($scope, $state, professors, $modal, profesorSeleccionado, selectedCourse, selectedSection, authentication) {
         var vm = this;
-        var professorid = $rootScope.professorId;
+        var user = authentication.currentUser();
+        var professorid = user._id;
         vm.section = [];
         vm.professor = null;
 
diff --git a/app/partials/report/section_report.html b/app/partials/report/section_report.html
index ea2b6fa..86f7a46 100644
--- a/app/partials/report/section_report.html
+++ b/app/partials/report/section_report.html
@@ -39,13 +39,15 @@
                     <td style="vertical-align:middle">{{ section.code }}</td>
                     <td style="vertical-align:middle">{{ section.semester }}</td>
                     <td style="text-align: center">
-                        <span class="glyphicon glyphicon-list-alt"  
+                        <span title="Haga click para ver los reportes de esta sección"
+                        class="glyphicon glyphicon-list-alt"  
                         aria-hidden="true"
                         ng-click="vm.sectionReport($index)" 
                         style="cursor:pointer"></span>
                     </td>
                     <td style="text-align: center">
-                        <span class="glyphicon glyphicon-list"  
+                        <span title="Haga click para ver el listado de estudiantes de esta sección"
+                        class="glyphicon glyphicon-list"  
                         aria-hidden="true" 
                         ng-click="vm.listStudents($index)"
                         style="cursor:pointer"></span>
diff --git a/app/partials/report/student_assist.controller.js b/app/partials/report/student_assist.controller.js
index c900c89..2dee8f7 100644
--- a/app/partials/report/student_assist.controller.js
+++ b/app/partials/report/student_assist.controller.js
@@ -6,10 +6,11 @@
         .controller('StudentAssistCtrl', StudentAssistCtrl)
 
     StudentAssistCtrl.$inject = 
-    ['$scope', '$rootScope','$state', 'professors', '$modal', 'selectedCourse', 'selectedSection', 'selectedStudent'];
-    function StudentAssistCtrl($scope, $rootScope, $state, professors, $modal, selectedCourse, selectedSection, selectedStudent) {
+    ['$scope', '$state', 'professors', '$modal', 'selectedCourse', 'selectedSection', 'selectedStudent', 'authentication'];
+    function StudentAssistCtrl($scope, $state, professors, $modal, selectedCourse, selectedSection, selectedStudent, authentication) {
         var vm = this;
-        var professorid = $rootScope.professorId;
+        var user = authentication.currentUser();
+        var professorid = user._id;
         vm.section = [];
         vm.lectures = 0;
         vm.percentage = 0;
diff --git a/app/partials/report/student_report.controller.js b/app/partials/report/student_report.controller.js
index a9bf6ff..df5e13e 100644
--- a/app/partials/report/student_report.controller.js
+++ b/app/partials/report/student_report.controller.js
@@ -6,10 +6,11 @@
         .controller('StudentReportCtrl', StudentReportCtrl)
 
     StudentReportCtrl.$inject = 
-    ['$scope', '$rootScope', '$state', 'professors', '$modal', 'selectedCourse', 'selectedSection', 'selectedStudent'];
-    function StudentReportCtrl($scope, $rootScope, $state, professors, $modal, selectedCourse, selectedSection, selectedStudent) {
+    ['$scope', '$state', 'professors', '$modal', 'selectedCourse', 'selectedSection', 'selectedStudent', 'authentication'];
+    function StudentReportCtrl($scope, $state, professors, $modal, selectedCourse, selectedSection, selectedStudent, authentication) {
         var vm = this;
-        var professorid = $rootScope.professorId;
+        var user = authentication.currentUser();
+        var professorid = user._id;
         vm.section = [];
         vm.professor = null;
 
diff --git a/app/partials/report/student_report.html b/app/partials/report/student_report.html
index 1c2389c..f6e5519 100644
--- a/app/partials/report/student_report.html
+++ b/app/partials/report/student_report.html
@@ -32,7 +32,8 @@
                     <td style="vertical-align:middle">{{ student.name }}</td>
                     <td style="vertical-align:middle">{{ student.lastname }}</td>
                     <td style="text-align: center">
-                        <span class="glyphicon glyphicon-list-alt" 
+                        <span title="Haga click para ver la asistencia de este estudiante"
+                        class="glyphicon glyphicon-list-alt" 
                         aria-hidden="true"  
                         ng-click="vm.studentReports($index)" 
                         style="cursor:pointer"></span>
diff --git a/app/partials/section/modal/create_section_modal.html b/app/partials/section/modal/create_section_modal.html
index 8d22a91..ed288c5 100644
--- a/app/partials/section/modal/create_section_modal.html
+++ b/app/partials/section/modal/create_section_modal.html
@@ -2,11 +2,15 @@
     <h3 class="modal-title">Crear Sección</h3>
 </div>
 <div style="text-align: center" class="modal-body">
-    {{ mensaje }}
+    {{ vm.mensaje }}
 </div>
 <div class="modal-footer">
-    <button class="btn btn-primary" ng-show="botonOk" type="button" 
-    ng-click="ok(urlLo)">Aceptar</button>
-    <button class="btn btn-warning" ng-show="botonCancelar" type="button" 
+    <button class="btn btn-primary" 
+    ng-show="vm.botonOk" 
+    type="button" 
+    ng-click="ok()">Aceptar</button>
+    <button class="btn btn-warning" 
+    ng-show="vm.botonCancelar" 
+    type="button" 
     ng-click="cancel()">Cancelar</button>
 </div>
\ No newline at end of file
diff --git a/app/partials/section/modal/delete_section_modal.html b/app/partials/section/modal/delete_section_modal.html
index c6ad3d2..9293fca 100644
--- a/app/partials/section/modal/delete_section_modal.html
+++ b/app/partials/section/modal/delete_section_modal.html
@@ -2,13 +2,19 @@
     <h3 class="modal-title">Eliminar Sección</h3>
 </div>
 <div style="text-align: center" class="modal-body">
-    {{ mensaje }}
+    {{ vm.mensaje }}
 </div>
 <div  class="modal-footer">
-    <button class="btn btn-primary" ng-show="botonOk"  type="button" 
+    <button class="btn btn-primary" 
+    ng-show="vm.botonOk"  
+    type="button" 
     ng-click="vm.eliminarMatricula(index)">OK</button>
-    <button class="btn btn-warning" ng-show="botonCancelar" type="button" 
+    <button class="btn btn-warning" 
+    ng-show="vm.botonCancelar" 
+    type="button" 
     ng-click="cancel()">Cancelar</button>
-    <button class="btn btn-primary" ng-show="otroBotonOk" type="button" 
+    <button class="btn btn-primary" 
+    ng-show="vm.otroBotonOk" 
+    type="button" 
     ng-click="ok(urlLo)">Aceptar</button>
 </div>
\ No newline at end of file
diff --git a/app/partials/section/modal/student_bt_removal_modal.html b/app/partials/section/modal/student_bt_removal_modal.html
index c045561..df39e59 100644
--- a/app/partials/section/modal/student_bt_removal_modal.html
+++ b/app/partials/section/modal/student_bt_removal_modal.html
@@ -2,13 +2,19 @@
     <h3 class="modal-title">Liberar BT</h3>
 </div>
 <div style="text-align: center" class="modal-body">
-    {{ mensaje }}
+    {{ vm.mensaje }}
 </div>
 <div  class="modal-footer">
-    <button class="btn btn-primary" ng-show="botonOk"  type="button" 
+    <button class="btn btn-primary" 
+    ng-show="vm.botonOk"  
+    type="button" 
     ng-click="vm.freeBTAddress(index)">OK</button>
-    <button class="btn btn-warning" ng-show="botonCancelar" type="button" 
+    <button class="btn btn-warning" 
+    ng-show="vm.botonCancelar" 
+    type="button" 
     ng-click="cancel()">Cancelar</button>
-    <button class="btn btn-primary" ng-show="otroBotonOk" type="button" 
-    ng-click="ok(urlLo)">Aceptar</button>
+    <button class="btn btn-primary" 
+    ng-show="vm.otroBotonOk" 
+    type="button" 
+    ng-click="ok()">Aceptar</button>
 </div>
\ No newline at end of file
diff --git a/app/partials/section/modal/update_section_modal.html b/app/partials/section/modal/update_section_modal.html
index 2b7774d..868a1a6 100644
--- a/app/partials/section/modal/update_section_modal.html
+++ b/app/partials/section/modal/update_section_modal.html
@@ -2,13 +2,19 @@
     <h3 class="modal-title">Retirar Estudiante</h3>
 </div>
 <div style="text-align: center" class="modal-body">
-    {{ mensaje }}
+    {{ vm.mensaje }}
 </div>
 <div  class="modal-footer">
-    <button class="btn btn-primary" ng-show="botonOk"  type="button" 
+    <button class="btn btn-primary" 
+    ng-show="vm.botonOk"  
+    type="button" 
     ng-click="vm.retirarEstudiante(index)">OK</button>
-    <button class="btn btn-primary" ng-show="otroBotonOk" type="button" 
+    <button class="btn btn-primary" 
+    ng-show="vm.otroBotonOk" 
+    type="button" 
     ng-click="ok()">Aceptar</button>
-    <button class="btn btn-warning" ng-show="botonCancelar" type="button" 
+    <button class="btn btn-warning" 
+    ng-show="vm.botonCancelar" 
+    type="button" 
     ng-click="cancel()">Cancelar</button>
 </div>
\ No newline at end of file
diff --git a/app/partials/section/section.module.js b/app/partials/section/section.module.js
index 40b26ce..4576886 100644
--- a/app/partials/section/section.module.js
+++ b/app/partials/section/section.module.js
@@ -17,54 +17,33 @@
         $urlRouterProvider.otherwise('/SectionList');
 
         $stateProvider
-
             .state('SectionList', {
+                parent: 'index',
                 url: '/SectionList',
                 views: {
-                    sidebar: {
-                        templateUrl: 'partials/sidebar/sidebar.html',
-                        controller: 'SidebarCtrl'
-                    },
-                    navbar: {
-                        templateUrl: 'partials/sidebar/navbar.html'
-                    },
-                    content: {
+                    'content@': {
                         templateUrl: 'partials/section/section_list.html',
                         controller: 'SectionListCtrl',
                         controllerAs: 'vm'
                     }
                 }
             })
-
             .state('SectionCreate', {
+                parent: 'index',
                 url: '/SectionCreate',
                 views: {
-                    sidebar: {
-                        templateUrl: 'partials/sidebar/sidebar.html',
-                        controller: 'SidebarCtrl'
-                    },
-                    navbar: {
-                        templateUrl: 'partials/sidebar/navbar.html'
-                    },
-                    content: {
+                    'content@': {
                         templateUrl: 'partials/section/section_create.html',
                         controller: 'SectionCreateCtrl',
                         controllerAs: 'vm'
                     }
                 }
             })
-
-             .state('SectionUpdate', {
+            .state('SectionUpdate', {
+                parent: 'index',
                 url: '/SectionUpdate',
                 views: {
-                    sidebar: {
-                        templateUrl: 'partials/sidebar/sidebar.html',
-                        controller: 'SidebarCtrl'
-                    },
-                    navbar: {
-                        templateUrl: 'partials/sidebar/navbar.html'
-                    },
-                    content: {
+                    'content@': {
                         templateUrl: 'partials/section/section_update.html',
                         controller: 'SectionUpdateCtrl',
                         controllerAs: 'vm'
diff --git a/app/partials/section/section_create.controller.js b/app/partials/section/section_create.controller.js
index a67d62d..2bef9d1 100644
--- a/app/partials/section/section_create.controller.js
+++ b/app/partials/section/section_create.controller.js
@@ -6,16 +6,17 @@
         .controller('SectionCreateCtrl', SectionCreateCtrl)
 
     SectionCreateCtrl.$inject = 
-    ['$scope','$rootScope', '$state', 'professors', '$modal', 'selectedCourse'];
-    function SectionCreateCtrl($scope, $rootScope, $state, professors, $modal, selectedCourse){
-        var professorid = $rootScope.professorId;
+    ['$scope', '$state', 'professors', '$modal', 'selectedCourse','authentication'];
+    function SectionCreateCtrl($scope, $state, professors, $modal, selectedCourse, authentication){
+        var user = authentication.currentUser();
+        var professorid = user._id;
         var vm = this;
         vm.course = {};
         vm.itExists = false;
         vm.selectedCourse = selectedCourse;
         vm.submitted = false;
         vm.semester, vm.section, vm.materias;
-        $rootScope.mensaje = "";
+        vm.mensaje = "";
         vm.students = [];
 
         professors.get({ id: professorid },
@@ -47,15 +48,9 @@
                 };
 
                 $scope.modalInstance = $modal.open({
-                    animation: $rootScope.animationsEnabled,
                     templateUrl: 'partials/section/modal/create_section_modal.html',
                     scope: $scope,
-                    size: 'sm',
-                    resolve: {
-                        items: function () {
-                            return $rootScope.items;
-                        }
-                    }
+                    size: 'sm'
                 });
 
 
@@ -72,19 +67,17 @@
                     vm.professor.courses[vm.index].sections.push(vm.package);
                     professors.update({ id: professorid }, vm.professor,
                         function(){
-                            $rootScope.botonOk = true;
-                            $rootScope.mensaje = "Sección " + vm.name + " creada";
+                            vm.botonOk = true;
+                            vm.mensaje = "Sección " + vm.name + " creada";
                         },
                         function(){
-                            $rootScope.botonOk = true;
-                            $rootScope.mensaje = "Error creando la seccion " + vm.name;
+                            vm.botonOk = true;
+                            vm.mensaje = "Error creando la seccion " + vm.name;
                     });
                 }else{
-                    $rootScope.botonOk = true;
-                    $rootScope.mensaje = "Sección Duplicada, " + vm.name + " existe en el semestre "+ vm.semester + ".";
+                    vm.botonOk = true;
+                    vm.mensaje = "Sección Duplicada, " + vm.name + " existe en el semestre "+ vm.semester + ".";
                 }
-            }else{
-                vm.submitted = true;
             }
         };
 
diff --git a/app/partials/section/section_list.controller.js b/app/partials/section/section_list.controller.js
index 64d2899..ba95a1d 100644
--- a/app/partials/section/section_list.controller.js
+++ b/app/partials/section/section_list.controller.js
@@ -5,10 +5,11 @@
         .module('app.section')
         .controller('SectionListCtrl', SectionListCtrl)
 
-    SectionListCtrl.$inject = [ '$scope', '$rootScope', '$state', 'professors', '$modal', 'selectedCourse', 'selectedSection'];
-    function SectionListCtrl ( $scope, $rootScope, $state, professors, $modal, selectedCourse, selectedSection ){
+    SectionListCtrl.$inject = [ '$scope', '$state', 'professors', '$modal', 'selectedCourse', 'selectedSection', 'authentication'];
+    function SectionListCtrl ( $scope, $state, professors, $modal, selectedCourse, selectedSection, authentication ){
         var vm = this;
-        var professorid = $rootScope.professorId;
+        var user = authentication.currentUser();
+        var professorid = user._id;
         vm.section = [];
         vm.professor = null;
 
@@ -27,60 +28,45 @@
             function (){
                 console.log("Error al obtener los datos.");
 
-            });
-
-        /**************************Eliminar Matricula**************************/
-        /* En este proceso, primero se llama a un Modal el cual se cerciora que
-        el usuario se asegure de eliminar la matricula escogida, el usuario al 
-        confirmar su decision llama automaticamente a la funcion que hara la 
-        llamada a servicio que borrara la matricula de la base de datos.
-        */
+        });
 
         vm.createSection = function () {
             $state.go('SectionCreate');
         };
 
         vm.eliminarMatriculaModal = function (index) {
-            $rootScope.index = index;   
-            $rootScope.botonOk = true;
-            $rootScope.otroBotonOk = false;
-            $rootScope.botonCancelar = true;
-            $rootScope.rsplice = false;
+            $scope.index = index;   
+            vm.botonOk = true;
+            vm.otroBotonOk = false;
+            vm.botonCancelar = true;
+            vm.rsplice = false;
             var name = vm.section[index].name;
-            $rootScope.mensaje = "¿Seguro que desea eliminar la sección "+name+"?";
+            vm.mensaje = "¿Seguro que desea eliminar la sección "+name+"?";
             
             $scope.modalInstance = $modal.open({
-                animation: $rootScope.animationsEnabled,
                 templateUrl: '/partials/section/modal/delete_section_modal.html',
                 scope: $scope,
-                size: 'sm',
-                resolve: {
-                    items: function () {
-                        return "";
-                    }
-                }
+                size: 'sm'
             });
         };
 
         vm.eliminarMatricula = function (index) {
-            $rootScope.botonOk = false;
-            $rootScope.otroBotonOk = true;
-            $rootScope.botonCancelar = false;
+            vm.botonOk = false;
+            vm.otroBotonOk = true;
+            vm.botonCancelar = false;
             var name = vm.section[index].name;
-
             vm.professor.courses[vm.index].sections.splice(index, 1);
+
             professors.update({ id: professorid }, vm.professor, 
                 function () {
-                    $rootScope.rsplice = true;
-                    $rootScope.mensaje = "Sección " + name + " eliminada";
+                    vm.rsplice = true;
+                    vm.mensaje = "Sección " + name + " eliminada";
                 },
                 function () {
-                    $rootScope.mensaje = "Error eliminando la sección " + name;
+                    vm.mensaje = "Error eliminando la sección " + name;
                 });
         };
 
-        /*************************Fin de Eliminar Matricula*******************/
-
         vm.modificarMatricula = function (index) {
             selectedSection._id = vm.section[index]._id;
             selectedCourse.index = vm.index;
diff --git a/app/partials/section/section_list.html b/app/partials/section/section_list.html
index 9f28675..6a88918 100644
--- a/app/partials/section/section_list.html
+++ b/app/partials/section/section_list.html
@@ -12,23 +12,15 @@
             <tr>
                 <th width="20%">
                         Sección
-                        <span ng-show="sortType == 'name' && !sortReverse" class="fa fa-caret-down"></span>
-                        <span ng-show="sortType == 'name' && sortReverse" class="fa fa-caret-up"></span>
                 </th>
                 <th width="20%">
                         Nombre de la Materia
-                        <span ng-show="sortType == 'course' && !sortReverse" class="fa fa-caret-down"></span>
-                        <span ng-show="sortType == 'course' && sortReverse" class="fa fa-caret-up"></span>
                 </th>
                 <th width="20%">
                         Codigo de la Materia
-                        <span ng-show="sortType == 'code' && !sortReverse" class="fa fa-caret-down"></span>
-                        <span ng-show="sortType == 'code' && sortReverse" class="fa fa-caret-up"></span>
                 </th>
                 <th width="20%">
                         Semestre
-                        <span ng-show="sortType == 'semester' && !sortReverse" class="fa fa-caret-down"></span>
-                        <span ng-show="sortType == 'semester' && sortReverse" class="fa fa-caret-up"></span>
                 </th>
                 <th width="10%" style="text-align: center">
                     Matricula
@@ -45,14 +37,16 @@
                 <td style="vertical-align:middle">{{ section.code }}</td>
                 <td style="vertical-align:middle">{{ section.semester }}</td>
                 <td style="text-align: center">
-                    <span title="Click aqui para Modificar la Matricula" 
-                    class="glyphicon glyphicon-edit" aria-hidden="true" 
+                    <span title="Haga click para modificar la matricula" 
+                    class="glyphicon glyphicon-edit" 
+                    aria-hidden="true" 
                     ng-click="vm.modificarMatricula($index)" 
                     style="cursor:pointer"></span>
                 </td>
                 <td style="text-align: center">
-                    <span title="Click aqui para Eliminar la Matricula" 
-                    class="glyphicon glyphicon-remove" aria-hidden="true" 
+                    <span title="Haga click para eliminar la matricula" 
+                    class="glyphicon glyphicon-remove" 
+                    aria-hidden="true" 
                     ng-click="vm.eliminarMatriculaModal($index)"
                     style="cursor:pointer"></span>
                 </td>
diff --git a/app/partials/section/section_update.controller.js b/app/partials/section/section_update.controller.js
index b8df037..d6a6bf3 100644
--- a/app/partials/section/section_update.controller.js
+++ b/app/partials/section/section_update.controller.js
@@ -5,9 +5,10 @@
         .module('app.section')
         .controller('SectionUpdateCtrl', SectionUpdateCtrl)    
 
-    SectionUpdateCtrl.$inject = ['$scope', '$rootScope', '$state', 'professors', '$modal', 'selectedSection', 'selectedCourse','data'];
-    function SectionUpdateCtrl($scope, $rootScope, $state, professors, $modal, selectedSection, selectedCourse, data){
-        var professorid = $rootScope.professorId;
+    SectionUpdateCtrl.$inject = ['$scope', '$state', 'professors', '$modal', 'selectedSection', 'selectedCourse','data', 'authentication'];
+    function SectionUpdateCtrl($scope, $state, professors, $modal, selectedSection, selectedCourse, data, authentication){
+        var user = authentication.currentUser();
+        var professorid = user._id;
         var vm = this;
         vm.section = {};
         vm.students = [];
@@ -39,22 +40,15 @@
         };
 
         vm.freeBTAddressModal = function (index) {
-            $rootScope.index = index;
-            $rootScope.botonOk = true;
-            $rootScope.otroBotonOk = false;
-            $rootScope.botonCancelar = true;
-            $rootScope.eliminarLoading = false;
-            $rootScope.mensaje = "¿Desea liberar la dirección de BT del estudiante "+ vm.students[index].lastname +", "+ vm.students[index].name + "?";
+            $scope.index = index;
+            vm.botonOk = true;
+            vm.otroBotonOk = false;
+            vm.botonCancelar = true;
+            vm.mensaje = "¿Desea liberar la dirección de BT del estudiante "+ vm.students[index].lastname +", "+ vm.students[index].name + "?";
             $scope.modalInstance = $modal.open({
-                animation: $rootScope.animationsEnabled,
                 templateUrl: 'partials/section/modal/student_bt_removal_modal.html',
                 scope: $scope,
-                size: 'sm',
-                resolve: {
-                    items: function () {
-                        return "";
-                    }
-                }
+                size: 'sm'
             });
         };
 
@@ -66,36 +60,30 @@
 
                 professors.update({ id: professorid }, vm.professor,
                     function(){
-                        $rootScope.botonOk = false;
-                        $rootScope.otroBotonOk = true;
-                        $rootScope.botonCancelar = false;
-                        $rootScope.mensaje = "Dirección BT de " + vm.student.lastname + ", " + vm.student.name + " fue liberada";
+                        vm.botonOk = false;
+                        vm.otroBotonOk = true;
+                        vm.botonCancelar = false;
+                        vm.mensaje = "Dirección BT de " + vm.student.lastname + ", " + vm.student.name + " fue liberada";
                     },
                     function(){
-                        $rootScope.botonOk = false;
-                        $rootScope.otroBotonOk = true;
-                        $rootScope.botonCancelar = false;
-                        $rootScope.mensaje = "Error al liberar dirección de BT del estudiante " + vm.estudiante.Apellido + ", " + vm.estudiante.Nombre;
+                        vm.botonOk = false;
+                        vm.otroBotonOk = true;
+                        vm.botonCancelar = false;
+                        vm.mensaje = "Error al liberar dirección de BT del estudiante " + vm.estudiante.Apellido + ", " + vm.estudiante.Nombre;
                 });
         };
 
         vm.retirarEstudianteModal = function (index) {
-            $rootScope.index = index;
-            $rootScope.botonOk = true;
-            $rootScope.otroBotonOk = false;
-            $rootScope.botonCancelar = true;
-            $rootScope.eliminarLoading = false;
-            $rootScope.mensaje = "¿Desea retirar al estudiante "+ vm.students[index].lastname +", "+ vm.students[index].name + "?";
+            $scope.index = index;
+            vm.botonOk = true;
+            vm.otroBotonOk = false;
+            vm.botonCancelar = true;
+            vm.eliminarLoading = false;
+            vm.mensaje = "¿Desea retirar al estudiante "+ vm.students[index].lastname +", "+ vm.students[index].name + "?";
             $scope.modalInstance = $modal.open({
-                animation: $rootScope.animationsEnabled,
                 templateUrl: 'partials/section/modal/update_section_modal.html',
                 scope: $scope,
-                size: 'sm',
-                resolve: {
-                    items: function () {
-                        return "";
-                    }
-                }
+                size: 'sm'
             });
         };
 
@@ -104,16 +92,16 @@
 
             professors.update({ id: professorid }, vm.professor,
             function (){
-                $rootScope.botonOk = false;
-                $rootScope.otroBotonOk = true;
-                $rootScope.botonCancelar = false;
-                $rootScope.mensaje = "Sección "+ vm.section.name +" actualizada";
+                vm.botonOk = false;
+                vm.otroBotonOk = true;
+                vm.botonCancelar = false;
+                vm.mensaje = "Sección "+ vm.section.name +" actualizada";
             },
             function (){
-                $rootScope.botonOk = false;
-                $rootScope.otroBotonOk = true;
-                $rootScope.botonCancelar = false;
-                $rootScope.mensaje = "Error al actualizar la Sección "+ vm.section.name;
+                vm.botonOk = false;
+                vm.otroBotonOk = true;
+                vm.botonCancelar = false;
+                vm.mensaje = "Error al actualizar la Sección "+ vm.section.name;
             });
         };
 
diff --git a/app/partials/section/section_update.html b/app/partials/section/section_update.html
index ef23b60..11b6a9d 100644
--- a/app/partials/section/section_update.html
+++ b/app/partials/section/section_update.html
@@ -12,31 +12,21 @@
             <tr>
                 <th width="10%" style="text-align: center">
                     Cedula
-                    <span ng-show="sortType == 'id' && !sortReverse" class="fa fa-caret-down"></span>
-                    <span ng-show="sortType == 'id' && sortReverse" class="fa fa-caret-up"></span>
                 </th>
                 <th width="20%" style="text-align: center">
                     Nombre
-                    <span ng-show="sortType == 'name' && !sortReverse" class="fa fa-caret-down"></span>
-                    <span ng-show="sortType == 'name' && sortReverse" class="fa fa-caret-up"></span>
                 </th>
                 <th width="20%" style="text-align: center">
                     Apellido
-                    <span ng-show="sortType == 'lastname' && !sortReverse" class="fa fa-caret-down"></span>
-                    <span ng-show="sortType == 'lastname' && sortReverse" class="fa fa-caret-up"></span>
                 </th>
                 <th width="20%" style="text-align: center">
                     Correo
-                    <span ng-show="sortType == 'email' && !sortReverse" class="fa fa-caret-down"></span>
-                    <span ng-show="sortType == 'email' && sortReverse" class="fa fa-caret-up"></span>
                 </th>
                 <th width="10%" style="text-align: center">
                     Actualizar Correo
                 </th>
                 <th width="10%" style="text-align: center">
                     Dirección BT
-                    <span ng-show="sortType == 'email' && !sortReverse" class="fa fa-caret-down"></span>
-                    <span ng-show="sortType == 'email' && sortReverse" class="fa fa-caret-up"></span>
                 </th>
                 <th width="10%" style="text-align: center">
                     Liberar Dirección BT
@@ -53,20 +43,23 @@
                 <td style="vertical-align:middle">{{ student.lastname }}</td>
                 <td style="vertical-align:middle">{{ student.email }}</td>
                 <td style="text-align: center">
-                    <span class="glyphicon glyphicon-envelope" 
+                    <span title="Haga click para actualizar dirección de correo del estudiante"
+                    class="glyphicon glyphicon-envelope" 
                     aria-hidden="true"
                     ng-click="vm.mailUpdate($index)" 
                     style="cursor:pointer;"></span>
                 </td>
                 <td style="vertical-align:middle">{{ student.btaddress }}</td>
                 <td style="text-align: center">
-                    <span class="glyphicon glyphicon-signal" 
+                    <span title="Haga click para liberar la dirección MAC del telefono del estudiante"
+                    class="glyphicon glyphicon-signal" 
                     aria-hidden="true"
                     ng-click="vm.freeBTAddressModal($index)" 
                     style="cursor:pointer;"></span>
                 </td>         
                 <td style="text-align: center">
-                    <span class="glyphicon glyphicon-remove" 
+                    <span title="Haga click para retirar al estudiante de la sección"
+                    class="glyphicon glyphicon-remove" 
                     aria-hidden="true"
                     ng-click="vm.retirarEstudianteModal($index)" 
                     style="cursor:pointer;"></span>
diff --git a/app/partials/sidebar/navbar.controllers.js b/app/partials/sidebar/navbar.controllers.js
new file mode 100644
index 0000000..434df33
--- /dev/null
+++ b/app/partials/sidebar/navbar.controllers.js
@@ -0,0 +1,17 @@
+(function(){
+    'use strict';
+
+    angular
+        .module('app')
+        .controller('NavbarCtrl', NavbarCtrl)
+
+    NavbarCtrl.$inject = ['$scope', 'authentication', '$state'];
+    function NavbarCtrl($scope, authentication, $state) {   
+        var vm = this;
+
+        vm.logout = function () {
+            authentication.logout();
+            $state.go('login');
+        };
+    };
+})();
diff --git a/app/partials/sidebar/navbar.html b/app/partials/sidebar/navbar.html
index b81ddda..f3f8ee1 100644
--- a/app/partials/sidebar/navbar.html
+++ b/app/partials/sidebar/navbar.html
@@ -15,7 +15,13 @@
             <ul class="nav navbar-nav navbar-right">
                 <div class="container-fluid">
                     </br>
-                    <a href="#login" class="btn-danger btn" style=" margin: 10px"><span class="glyphicon glyphicon-log-out" aria-hidden="true"></span> Salir</a>
+                    <button class="btn-danger btn" 
+                            style=" margin: 10px" 
+                            ng-click= "vm.logout()">
+                            <span class="glyphicon glyphicon-log-out" 
+                                aria-hidden="true"></span> 
+                            Salir 
+                    </button>
                 </div>
             </ul>
         </div>
diff --git a/app/partials/sidebar/sidebar.controllers.js b/app/partials/sidebar/sidebar.controllers.js
index 1dbef02..9ec2d11 100644
--- a/app/partials/sidebar/sidebar.controllers.js
+++ b/app/partials/sidebar/sidebar.controllers.js
@@ -5,49 +5,68 @@
         .module('app')
         .controller('SidebarCtrl', SidebarCtrl)
 
-    SidebarCtrl.$inject = ['$scope'];
-    function SidebarCtrl($scope) {   
+    SidebarCtrl.$inject = ['$scope', 'authentication'];
+    function SidebarCtrl($scope, authentication) {   
         var that = this;
-        $scope.showChilds = function(item){
-            item.active = !item.active;
+        $scope.showChilds = function(index){
+            $scope.items[index].active = !$scope.items[index].active;
+            collapseAnother(index);
         };
 
-        $scope.items = [
-            {
-                text: 'Módulo de Administración', 
-                subItems: [
-                    {
-                        state: 'ProfessorList',
-                        text: 'Listado de Profesores'
-                    },
-                    {
-                        state: 'ProfessorCreate',
-                        text: 'Nuevo Profesor'
-                  }
-                ]
-            },
-            {
-                text: 'Módulo de Materias', 
-                subItems: [
-                    {
-                        state: 'CourseList',
-                        text: 'Listado de Materias'
-                    },
-                    {
-                        state: 'CourseCreate',
-                        text: 'Nueva Materia'
-                  }
-                ]
-            },                
-            {
-                text: 'Módulo de Reportes', 
-                subItems: [
-                    {
-                        state: 'courseReport',
-                        text: 'Reportes por Materia'
-                    }     
-                ]   
+        var collapseAnother = function(index){
+            for(var i=0; i<$scope.items.length; i++){
+                if(i!=index){
+                    $scope.items[i].active = false;
+                }
             }
-        ];
+        };
+
+        $scope.items = [];
+
+        var permission = authentication.currentUser();
+        
+        if(permission.role=='admin'){
+            $scope.items = [
+                {
+                    text: 'Módulo de Administración', 
+                    subItems: [
+                        {
+                            state: 'ProfessorList',
+                            text: 'Listado de Profesores'
+                        },
+                        {
+                            state: 'ProfessorCreate',
+                            text: 'Nuevo Profesor'
+                      }
+                    ]
+                }
+            ];
+        }
+        if(permission.role=='professor'){
+            $scope.items = [
+                {
+                    text: 'Módulo de Materias', 
+                    subItems: [
+                        {
+                            state: 'CourseList',
+                            text: 'Listado de Materias'
+                        },
+                        {
+                            state: 'CourseCreate',
+                            text: 'Nueva Materia'
+                      }
+                    ]
+                },                
+                {
+                    text: 'Módulo de Reportes', 
+                    subItems: [
+                        {
+                            state: 'courseReport',
+                            text: 'Reportes por Materia'
+                        }     
+                    ]   
+                }
+            ];
+        }
     };
 })();
diff --git a/app/partials/sidebar/sidebar.html b/app/partials/sidebar/sidebar.html
index e2b9070..ee50462 100644
--- a/app/partials/sidebar/sidebar.html
+++ b/app/partials/sidebar/sidebar.html
@@ -4,10 +4,14 @@
             <div class="row">
                 <div class="col-sm-3 col-md-2 sidebar">
                     <ul class="nav nav-sidebar">
-                        <li ng-repeat="item in items" ng-click="showChilds(item)">
+                        <li ng-repeat="item in items" 
+                        ng-click="showChilds($index)">
                             <a>{{item.text}}</a>
                             <ul class="nav nav-sidebar text-center">
-                                <li ng-repeat="subItem in item.subItems" ng-show="item.active">
+                                <li ng-repeat="subItem in item.subItems" 
+                                ng-show="item.active"
+                                ng-click="showChilds($index)"
+                                ui-sref-active="active">
                                     <a data-ui-sref="{{ subItem.state ? subItem.state : false }}">{{subItem.text}}
                                 </li>
                             </ul>
diff --git a/app/partials/students/modal/create_students_modal.html b/app/partials/students/modal/create_students_modal.html
index a441654..3b433e4 100644
--- a/app/partials/students/modal/create_students_modal.html
+++ b/app/partials/students/modal/create_students_modal.html
@@ -2,8 +2,11 @@
     <h3 class="modal-title">Crear Estudiante</h3>
 </div>
 <div style="text-align: center" class="modal-body">
-    {{ mensaje }}
+    {{ vm.mensaje }}
 </div>
-<div  class="modal-footer">
-    <button class="btn btn-primary" ng-show="botonOk" type="button" ng-click="ok(urlLo)">Aceptar</button>
+<div class="modal-footer">
+    <button class="btn btn-primary" 
+    ng-show="vm.botonOk" 
+    type="button" 
+    ng-click="ok()">Aceptar</button>
 </div>
\ No newline at end of file
diff --git a/app/partials/students/modal/list_students_modal.html b/app/partials/students/modal/list_students_modal.html
index 8893447..677beb2 100644
--- a/app/partials/students/modal/list_students_modal.html
+++ b/app/partials/students/modal/list_students_modal.html
@@ -2,13 +2,19 @@
     <h3 class="modal-title">Eliminar Estudiante</h3>
 </div>
 <div style="text-align: center" class="modal-body">
-    {{ mensaje }}
+    {{ vm.mensaje }}
 </div>
-<div  class="modal-footer">
-	<button class="btn btn-primary" ng-show="acceptButton" type="button" 
-	ng-click="ok(urlLo)">Aceptar</button>
-    <button class="btn btn-primary" ng-show="botonOK"  type="button" 
+<div class="modal-footer">
+	<button class="btn btn-primary" 
+	ng-show="vm.acceptButton" 
+	type="button" 
+	ng-click="ok()">Aceptar</button>
+    <button class="btn btn-primary" 
+    ng-show="vm.botonOK"  
+    type="button" 
     ng-click="vm.eliminarEstudiante(index)">OK</button>
-    <button class="btn btn-warning" ng-show="botonCancelar" type="button" 
+    <button class="btn btn-warning" 
+    ng-show="vm.botonCancelar" 
+    type="button" 
     ng-click="cancel()">Cancelar</button>
 </div>
\ No newline at end of file
diff --git a/app/partials/students/modal/update_students_modal.html b/app/partials/students/modal/update_students_modal.html
index 93e1c2f..ccf09df 100644
--- a/app/partials/students/modal/update_students_modal.html
+++ b/app/partials/students/modal/update_students_modal.html
@@ -2,11 +2,15 @@
     <h3 class="modal-title">Actualizar Estudiante</h3>
 </div>
 <div style="text-align: center" class="modal-body">
-    {{ mensaje }} 
+    {{ vm.mensaje }} 
 </div>
 <div class="modal-footer">
-    <button class="btn btn-primary" ng-show="botonOk" type="button" 
+    <button class="btn btn-primary" 
+    ng-show="vm.botonOk" 
+    type="button" 
     ng-click="ok()">Aceptar</button>
-    <button class="btn btn-warning" ng-show="botonCancelar" type="button" 
+    <button class="btn btn-warning" 
+    ng-show="vm.botonCancelar" 
+    type="button" 
     ng-click="cancel()">Cancelar</button>
 </div>
\ No newline at end of file
diff --git a/app/partials/students/student.module.js b/app/partials/students/student.module.js
index a0cb563..1c9a344 100644
--- a/app/partials/students/student.module.js
+++ b/app/partials/students/student.module.js
@@ -18,16 +18,10 @@
 
         $stateProvider
             .state('StudentCreate', {
+                parent: 'index',
                 url: '/StudentCreate',
                 views: {
-                    sidebar: {
-                        templateUrl: 'partials/sidebar/sidebar.html',
-                        controller: 'SidebarCtrl'
-                    },
-                    navbar: {
-                        templateUrl: 'partials/sidebar/navbar.html'
-                    },
-                    content: {
+                    'content@': {
                         templateUrl: 'partials/students/student_create.html',
                         controller: 'StudentCreateCtrl',
                         controllerAs: 'vm' 
@@ -35,16 +29,10 @@
                 }
             })
             .state('StudentUpdate', {
+                parent: 'index',
                 url: '/StudentUpdate',
                 views: {
-                    sidebar: {
-                        templateUrl: 'partials/sidebar/sidebar.html',
-                        controller: 'SidebarCtrl'
-                    },
-                    navbar: {
-                        templateUrl: 'partials/sidebar/navbar.html'
-                    },
-                    content: {
+                    'content@': {
                         templateUrl: 'partials/students/student_update.html',
                         controller: 'StudentUpdateCtrl',
                         controllerAs: 'vm' 
diff --git a/app/partials/students/student_create.controller.js b/app/partials/students/student_create.controller.js
index 4e9592f..b2f8976 100644
--- a/app/partials/students/student_create.controller.js
+++ b/app/partials/students/student_create.controller.js
@@ -5,15 +5,16 @@
         .module('app.student')
         .controller('StudentCreateCtrl', StudentCreateCtrl)
 
-    StudentCreateCtrl.$inject = ['$scope', '$rootScope', '$state', 'professors', '$modal', 'selectedSection', 'selectedCourse'];
-    function StudentCreateCtrl($scope, $rootScope, $state, professors, $modal, selectedSection, selectedCourse){
+    StudentCreateCtrl.$inject = ['$scope', '$state', 'professors', '$modal', 'selectedSection', 'selectedCourse', 'authentication'];
+    function StudentCreateCtrl($scope, $state, professors, $modal, selectedSection, selectedCourse, authentication){
         
         var vm = this;
         var duplicated = false;
-        var professorid = $rootScope.professorId;
+        var user = authentication.currentUser();
+        var professorid = user._id;
         vm.professor = {};
-        $rootScope.mensaje = "";
-        $rootScope.actOk = false;
+        vm.mensaje = "";
+        vm.actOk = false;
 
         professors.get({ id: professorid }, 
             function (successResult){
@@ -25,7 +26,6 @@
         });
 
         vm.submit = function() {
-
             if (vm.data_input_form.$valid){
                 var person = {
                     "id": vm.estudiante.Cedula,
@@ -34,18 +34,11 @@
                     "email": vm.estudiante.Correo
                 };
 
-                $rootScope.crearEstudianteLoading = true;
-                $rootScope.botonOk = false;
+                vm.botonOk = false;
                 $scope.modalInstance = $modal.open({
-                    animation: $rootScope.animationsEnabled,
                     templateUrl: 'partials/students/modal/create_students_modal.html',
                     scope: $scope,
-                    size: 'sm',
-                    resolve: {
-                        items: function () {
-                            return $rootScope.items;
-                        }
-                    }
+                    size: 'sm'
                 });
 
                 angular.forEach (vm.professor.courses[selectedCourse.index].sections[selectedSection.index].students, 
@@ -57,24 +50,18 @@
 
                     professors.update({ id: professorid }, vm.professor,
                         function(){
-                            $rootScope.botonOk = true;
-                            $rootScope.urlLo = 'actualizarMatricula';
-                            $rootScope.mensaje = "Estudiante " + vm.estudiante.Apellido + ", " + vm.estudiante.Nombre + " agregado";
-                            $rootScope.crearEstudianteLoading = false;
+                            vm.botonOk = true;
+                            vm.mensaje = "Estudiante " + vm.estudiante.Apellido + ", " + vm.estudiante.Nombre + " agregado";
                         },
 
                         function(){
-                            $rootScope.botonOk = true;
-                            $rootScope.mensaje = "Error al agregar al estudiante " + vm.estudiante.Apellido + ", " + vm.estudiante.Nombre;
-                            $rootScope.crearEstudianteLoading = false;
+                            vm.botonOk = true;
+                            vm.mensaje = "Error al agregar al estudiante " + vm.estudiante.Apellido + ", " + vm.estudiante.Nombre;
                         });
                 } else {
-                    $rootScope.botonOk = true;
-                    $rootScope.mensaje = "Estudiante con cedula " + vm.estudiante.Cedula + " ya esta en la lista.";
-                    $rootScope.crearEstudianteLoading = false;
+                    vm.botonOk = true;
+                    vm.mensaje = "Estudiante con cedula " + vm.estudiante.Cedula + " ya esta en la lista.";
                 }
-            }else{
-                vm.submitted = true;
             }
         }
 
@@ -87,17 +74,8 @@
             $scope.modalInstance.dismiss('cancel');
         };
 
-        $rootScope.open = function($event) {
-            $event.preventDefault();
-            $event.stopPropagation();
-
-            $rootScope.opened = true;
-        };
-
         vm.back = function () {
             $state.go('SectionUpdate');
         };  
-
-        return vm;
     };
 })();
\ No newline at end of file
diff --git a/app/partials/students/student_update.controller.js b/app/partials/students/student_update.controller.js
index 97d7e95..3655e7b 100644
--- a/app/partials/students/student_update.controller.js
+++ b/app/partials/students/student_update.controller.js
@@ -5,14 +5,15 @@
         .module('app.student')
         .controller('StudentUpdateCtrl', StudentUpdateCtrl)
 
-    StudentUpdateCtrl.$inject = ['$scope', '$rootScope', '$state', 'professors', '$modal', 'selectedSection', 'selectedCourse', 'data'];
-    function StudentUpdateCtrl($scope, $rootScope, $state, professors, $modal, selectedSection, selectedCourse, data){
+    StudentUpdateCtrl.$inject = ['$scope', '$state', 'professors', '$modal', 'selectedSection', 'selectedCourse', 'data', 'authentication'];
+    function StudentUpdateCtrl($scope, $state, professors, $modal, selectedSection, selectedCourse, data, authentication){
         
         var vm = this;
-        var professorid = $rootScope.professorId;
+        var user = authentication.currentUser();
+        var professorid = user._id;
         vm.professor = {};
-        $rootScope.mensaje = "";
-        $rootScope.actOk = false;
+        vm.mensaje = "";
+        vm.actOk = false;
         vm.newMail = null;
         vm.student = data.Student
 
@@ -36,18 +37,11 @@
 
             if (vm.data_input_form.$valid){
                 vm.student.email = vm.newMail;
-                $rootScope.crearEstudianteLoading = true;
-                $rootScope.botonOk = false;
+                vm.botonOk = false;
                 $scope.modalInstance = $modal.open({
-                    animation: $rootScope.animationsEnabled,
                     templateUrl: 'partials/students/modal/update_students_modal.html',
                     scope: $scope,
-                    size: 'sm',
-                    resolve: {
-                        items: function () {
-                            return $rootScope.items;
-                        }
-                    }
+                    size: 'sm'
                 });
 
                 vm.professor.courses[selectedCourse.index].sections[selectedSection.index].students.splice(data.Index, 1);
@@ -56,12 +50,12 @@
 
                 professors.update({ id: professorid }, vm.professor,
                     function(){
-                        $rootScope.botonOk = true;
-                        $rootScope.mensaje = "Estudiante " + vm.student.lastname + ", " + vm.student.name + " actualizado";
+                        vm.botonOk = true;
+                        vm.mensaje = "Estudiante " + vm.student.lastname + ", " + vm.student.name + " actualizado";
                     },
                     function(){
-                        $rootScope.botonOk = true;
-                        $rootScope.mensaje = "Error al actualizar al estudiante " + vm.estudiante.Apellido + ", " + vm.estudiante.Nombre;
+                        vm.botonOk = true;
+                        vm.mensaje = "Error al actualizar al estudiante " + vm.estudiante.Apellido + ", " + vm.estudiante.Nombre;
                 });
             }
         };
diff --git a/app/server.js b/app/server.js
index 52d81a1..3ebccef 100644
--- a/app/server.js
+++ b/app/server.js
@@ -1,16 +1,30 @@
 var mongoose = require('mongoose');
 var express = require('express');
+var path = require ('path');
+var favicon = require ('serve-favicon');
+var logger = require('morgan');
+var cookieparser = require('cookie-parser');
 var app = express();
 var db = mongoose.connection;
-//var Professor = require('./models/professor');
+var crypto = require('crypto');
 var bodyParser = require('body-parser');
+var jwbt = require('jsonwebtoken');
+var nodemailer = require('nodemailer');
+var transporter = nodemailer.createTransport('smtps://reynaldo.reyes.4@gmail.com:zwvdhyensrwnfipt@smtp.gmail.com');
+var jwt = require('express-jwt');
+var auth = jwt({
+  secret: 'MY_SECRET',
+  userProperty: 'payload'
+});
+
 app.use(express.static(__dirname));
 app.use(bodyParser.json());
-
-var nodemailer = require('nodemailer');
-
-// create reusable transporter object using the default SMTP transport
-var transporter = nodemailer.createTransport('smtps://reynaldo.reyes.4@gmail.com:zwvdhyensrwnfipt@smtp.gmail.com');
+app.use(function (err, req, res, next) {
+  if (err.name === 'UnauthorizedError') {
+    res.status(401);
+    res.json({"message" : err.name + ": " + err.message});
+  }
+});
 
 db.on('error', console.error);
 db.once('open', function() {
@@ -47,21 +61,59 @@ db.once('open', function() {
 	});
 
 	var professorSchema = new mongoose.Schema({
-	  id: Number,
-	  name: String,
-	  lastname: String,
-	  email: String, 
-	  number: String,
-	  role: String,
-	  password: String,
-	  courses: [courseSchema]
+	  	id: {
+	  		type: Number,
+		    unique: true,
+		    required: true
+	  	},
+	  	name: String,
+		lastname: String,
+		email: String, 
+	  	number: String,
+	  	role: String,
+	   	hash: String,
+  		salt: String,
+	  	courses: [courseSchema]
 	});
 
-	var Professor = mongoose.model('Professor', professorSchema);
-	
-	//Professor CRUD
+	professorSchema.methods.setPassword = function(password){
+	  	this.salt = crypto.randomBytes(16).toString('hex');
+	    this.hash = crypto.pbkdf2Sync(password, this.salt, 1000, 64).toString('hex');
+	};
 
-	app.get('/professors', function(req, res){
+	professorSchema.methods.validPassword = function(password){
+		var hash = crypto.pbkdf2Sync(password, this.salt, 1000, 64).toString('hex');
+		return this.hash === hash;
+	};
+
+	professorSchema.methods.generateJwt = function() {
+		var profile = {
+			_id: this._id,
+   			role: this.role
+		};
+		return jwbt.sign(profile, "MY_SECRET", { expiresIn: 18000 });
+	};
+
+	var Professor = mongoose.model('professor', professorSchema);
+
+	var passport = require('passport')
+  , LocalStrategy = require('passport-local').Strategy;
+
+	passport.use(new LocalStrategy({
+	    usernameField: 'id'
+	  	},
+		function(username, password, done) {
+		    Professor.findOne({ id: username }, function (err, professor) {
+			    if (err) return done(err);
+			    if (!professor) return done(null, false, {message: 'professor not found'});
+			    if (!professor.validPassword(password)) return done(null, false, {message: 'Password is wrong'});
+			    return done(null, professor);
+			});
+		}));
+
+	app.use(passport.initialize());
+
+	app.get('/professors', auth, function(req, res){
 		console.log('Received GET ALL professors request');
 		Professor.find(function(err, docs){
 			//console.log(docs);
@@ -69,7 +121,7 @@ db.once('open', function() {
 		})
 	});
 
-	app.get('/professors/:id', function(req, res){
+	app.get('/professors/:id', auth, function(req, res){
 		console.log('Received GET professor request');
 		console.log(req.params);
 		Professor.findById(req.params.id, 
@@ -79,7 +131,7 @@ db.once('open', function() {
 		})
 	});
 
-	app.post('/professors', function(req, res){
+	app.post('/professors',  function(req, res){
 		console.log('Received ADD professor request');
 		//console.log(req.body);
 
@@ -90,35 +142,32 @@ db.once('open', function() {
 		    email: req.body.email, 
 		    number: req.body.number,
 		    role: req.body.role,
-		    password: req.body.password,
-		    course: [
-		    	{ name:"Materia" }
-		    ]
+		    course: [{ name:"Materia" }]
 		})
+		professor.setPassword(req.body.password);
 
 		professor.save(
 			function(err, docs){
-			// setup e-mail data with unicode symbols
-			var mailOptions = {
-			    from: '"Rey Reyes" <reynaldo.reyes.4@gmail.com>', // sender address
-			    to: req.body.email, // list of receivers
-			    subject: 'Registro en la aplicación M.A.S.A.',
-			    text: 'Este es un correo automatizado para informarle que ha sido registrado en la aplicación M.A.S.A. sus credenciales son: '+ req.body.id +' / '+ req.body.password,
-			    html: 'Este es un correo automatizado para informarle que ha sido registrado en la aplicación <b> M.A.S.A.</b> sus credenciales son: '+ req.body.id +' / '+ req.body.password
-			};
-
-			// send mail with defined transport object
-			transporter.sendMail(mailOptions, function(error, info){
-			    if(error){
-			        return console.log(error);
-			    }
-			    console.log('Message sent: ' + info.response);
-			});
-			res.json(docs);
-		})
+				// setup e-mail data with unicode symbols
+				var mailOptions = {
+				    from: '"Rey Reyes" <reynaldo.reyes.4@gmail.com>', // sender address
+				    to: req.body.email, // list of receivers
+				    subject: 'Registro en la aplicación M.A.S.A.',
+				    text: 'Este es un correo automatizado para informarle que ha sido registrado en la aplicación M.A.S.A. sus credenciales son: '+ req.body.id +' / '+ req.body.password,
+				    html: 'Este es un correo automatizado para informarle que ha sido registrado en la aplicación <b> M.A.S.A.</b> sus credenciales son: '+ req.body.id +' / '+ req.body.password
+				};
+				// send mail with defined transport object
+				transporter.sendMail(mailOptions, function(error, info){
+				    if(error) return console.log(error);
+				    console.log('Message sent: ' + info.response);
+				});
+				var token = professor.generateJwt();
+			    res.status(200);
+			    res.json({"token" : token});
+			})
 	});
 
-	app.delete('/professors/:id', function(req, res){
+	app.delete('/professors/:id', auth,  function(req, res){
 		console.log("Received DELETE professor request...");
 		console.log(req.params);
 		Professor.findByIdAndRemove(req.params.id, 
@@ -128,7 +177,7 @@ db.once('open', function() {
 		});
 	});
 
-	app.put('/professors/:id', function(req, res){
+	app.put('/professors/:id', auth,  function(req, res){
 		console.log("Received UPDATE professor request");
 		console.log("params:" + req.params);
 		console.log("body:" + req.body);
@@ -147,9 +196,30 @@ db.once('open', function() {
 			});
 		});
 	});
+
+	app.post('/login', function(req, res){
+		passport.authenticate('local', function(err, professor, info){
+		    var token;
+		    // If Passport throws/catches an error
+		    if (err) {
+		      	res.status(404).json(err);
+		      	return;
+		    }
+		    // If a user is found
+		    if(professor){
+		      	token = professor.generateJwt();
+		      	res.status(200);
+		      	res.json({
+		        	"token" : token
+		      	});
+		    // If user is not found
+		    } else {
+		     	res.status(401).json(info);
+		    }
+		})(req, res);
+	});
 });
 
 mongoose.connect('mongodb://localhost/AttendanceDB');
-
 app.listen(3000);
 console.log("server running on port 3000");
\ No newline at end of file
diff --git a/package.json b/package.json
index ff09b32..f53d59a 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
-  "name": "masa-front",
+  "name": "masa",
   "version": "1.0.0",
-  "description": "Frontend for M.A.S.A. App.",
+  "description": "NPM Package for M.A.S.A. App.",
   "main": "app/index.html",
   "scripts": {
     "test": "echo \"Error: no test specified\" && exit 1"
@@ -17,8 +17,16 @@
   },
   "dependencies": {
     "body-parser": "latest",
-    "express" : "latest",
-    "gulp":"latest",
-    "mongoose":"latest"
+    "cookie-parser": "^1.4.1",
+    "express": "latest",
+    "express-jwt": "^3.4.0",
+    "favicon": "0.0.2",
+    "gulp": "latest",
+    "jsonwebtoken": "^6.2.0",
+    "mongoose": "latest",
+    "morgan": "^1.7.0",
+    "passport": "^0.3.2",
+    "passport-local": "^1.0.0",
+    "serve-favicon": "^2.3.0"
   }
 }