Tabla de Contenidos: “…-- Confidentiality breach -- Availability breach -- Integrity breach -- Impact -- Source -- External vs. internal -- Unintentional vs. intentional -- Manual vs. automatic -- Human vs. nature -- General treatment options -- Chapter 4: General Avoidance and Mitigation Strategies -- Introduction - general aspects, avoidance and related ISO27001 controls -- People -- A.7.1.1 - Screening -- Methods of screening -- A.7.1.2 - Terms and conditions of employment -- A.7.2.1 - Management responsibilities -- A.7.2.2 - Information security awareness, education and training -- A.7.2.3 - Disciplinary process -- A.7.3.1 - Termination or change of employment -- A.8.1.4 - Return of assets -- A.9.2.6 - Removal or adjustment of access rights -- Processes -- Technology -- ISO27001 Controls helpful for treatment of breaches -- A.6.1.3 - Contact with authorities -- A.7.2.2 - Information security awareness, education and training -- A.7.2.3 - Disciplinary process A.8.1.4 - Return of assets A.9.2.6 - Removal or adjustment of access rights -- A.12.2.1 - Controls against malware -- A.12.4.1 - Event logging and -- A.12.4.2 - Protection of log information…”

Tabla de Contenidos: “…1.4.4 Keys and Agents1.4.5 Access Control; 1.4.6 Port Forwarding; 1.5 History of SSH; 1.6 Related Technologies; 1.6.1 rsh Suite (r-Commands); 1.6.2 Pretty Good Privacy (PGP) and GNU Privacy Guard (GnuPG); 1.6.3 Kerberos; 1.6.4 IPSEC and Virtual Private Networks; 1.6.5 Secure Remote Password (SRP); 1.6.6 Secure Socket Layer (SSL) Protocol; 1.6.7 SSL-Enhanced Telnet and FTP; 1.6.8 stunnel; 1.6.9 Firewalls; 1.7 Summary; Basic Client Use; 2.1 A Running Example; 2.2 Remote Terminal Sessions with ssh; 2.2.1 File Transfer with scp; 2.3 Adding Complexity to the Example; 2.3.1 Known Hosts…”

Tabla de Contenidos: “…Initializing Cache Directories5.4. Testing Squid in a Terminal Window; 5.5. Running Squid as a Daemon Process; 5.6. …”

Tabla de Contenidos: “…DFSMStvs experiences -- 8.1 Console log during normal start -- 8.2 Exceptions -- 8.2.1 Committing without DFSMStvs -- 8.2.2 DFSMStvs server not registered to RRS -- 8.2.3 Reestablish connection between SMSVSAM and RRS -- 8.3 Monitoring DFSMStvs -- 8.3.1 SMSVSAM server connected or not connected to RRS -- 8.3.2 Display jobs using DFSMStvs -- 8.3.3 Display a specific cluster and its users -- 8.3.4 Coupling facility structure utilization -- 8.3.5 VSAM RLS central locking structure full -- 8.3.6 Display forward recovery log data sets -- 8.3.7 RRS failure terminating DFSMStvs -- 8.3.8 Coupling Facility lock structure -- 8.4 IDCAMS SHCDS examples -- 8.4.1 Data set list -- 8.4.2 Subsystem summary -- 8.4.3 Data sets by subsystem -- Appendix A. …”

Tabla de Contenidos: “…Implementation of the TCP/IP protocols; 7.1.1. Terminal equipment…”

Tabla de Contenidos: “…Accidental Intelligence:The Terminal Assumption. The Widening "Smart Gap". The Dumbing of America and the Culture of Amusement. …”

Tabla de Contenidos: “…5 Evolution of Mobile Devices and Operating Systems 241 -- 5.1 Introduction 241 -- 5.2 The System Architecture for Voice-Optimized Devices 246 -- 5.3 The System Architecture for Multimedia Devices 248 -- 5.4 Mobile Graphics Acceleration 253 -- 5.5 Hardware Evolution 256 -- 5.6 Multimode, Multifrequency Terminals 273 -- 5.7 Wireless Notebook Connectivity 276 -- 5.8 Impact of Hardware Evolution on Future Data Traffic 277 -- 5.9 Power Consumption and User Interface as the Dividing Line in Mobile Device Evolution 279 -- 5.10 Feature Phone Operating Systems 280 -- 5.11 Smartphone Operating Systems 282 -- 5.12 Operating System Tasks 288 -- 6 Mobile Web 2.0, Apps, and Owners 297 -- 6.1 Overview 297 -- 6.2 (Mobile) Web 1.0 - How Everything Started 298 -- 6.3 Web 2.0 - Empowering the User 299 -- 6.4 Web 2.0 from the User's Point of View 299 -- 6.5 The Ideas behind Web 2.0 306 -- 6.6 Discovering the Fabrics of Web 2.0 310 -- 6.7 Mobile Web 2.0 - Evolution and Revolution of Web 2.0 321 -- 6.8 (Mobile) Web 2.0 and Privacy and Security Considerations 334 -- 6.9 Mobile Apps 340 -- 6.10 Android App Programing Introduction 342 -- 6.11 Impact of Mobile Apps on Networks and Power Consumption 349 -- 6.12 Mobile Apps Security and Privacy Considerations 351 -- 6.13 Summary 354 -- 7 Conclusion 357 -- Index 361.…”

Tabla de Contenidos: “…Fetching, pulling, and pushing Git repositories -- Fetching repositories -- Pulling repositories -- Pushing to repositories -- Managing branches -- Viewing changes in repositories -- Linking GitHub issues -- Summary -- Chapter 10: Sharing Code with Live Share -- Technical requirements -- Understanding Live Share -- Using Live Share -- Performing live editing -- Sharing a terminal with other collaborators -- Summary -- Chapter 11: Working with Extensions in Visual Studio -- Technical requirements -- Working with the Extensions tool -- Searching for and installing extensions -- Reviewing VS Marketplace -- Setting up extensions -- Creating a simple VS 2022 extension -- Summary -- Chapter 12: Using Popular Extensions -- Technical requirements -- Using HTML Snippet Pack -- Cleaning up code with CodeMaid -- Compiling web libraries with Web Compiler -- Identifying white spaces with Indent Guides -- Optimizing images with Image Optimizer -- Highlighting messages in the Output window with VSColorOutput64 -- Managing .resx files easily with ResXManager -- Summary -- Chapter 13: Learning Keyboard Shortcuts -- Technical requirements -- Shortcuts for use in source code -- Shortcuts for searching and navigating source code -- Shortcuts for editing and refactoring -- Shortcuts for debugging and testing -- The most common shortcuts for use in the IDE -- Creating custom shortcuts -- Farewell -- Index -- Other Books You May Enjoy…”

Tabla de Contenidos: “…Cover -- Title Page -- Copyright and Credits -- Contributors -- Table of Contents -- Preface -- Part 1:Getting Started with OpenAI APIs -- Chapter 1: Beginning with the ChatGPT API for NLP Tasks -- Technical Requirements -- The ChatGPT Revolution -- Using ChatGPT from the Web -- Creating an OpenAI Account -- ChatGPT Web Interface -- Getting Started with the ChatGPT API -- Obtaining an API Key -- API Tokens and Pricing -- Setting Up Your Python Development Environment -- Installing Python and the PyCharm IDE -- Setting Up a Python Virtual Environment -- The pip Package Installer -- Building a Python Virtual Environment from the Terminal -- A Simple ChatGPT API Response -- Summary -- Chapter 2: Building a ChatGPT Clone -- Technical Requirements -- Creating a ChatGPT Clone with Flask -- Frontend HTML Generation -- Enhancing the ChatGPT Clone Design -- Intercepting ChatGPT API Endpoints -- Summary -- Part 2: Building Web Applications with the ChatGPT API -- Chapter 3: Creating and Deploying an AI Code Bug Fixing SaaS Application Using Flask -- Technical Requirements -- Performing Multiple ChatGPT API Requests -- Setting Up the Code Bug Fixer Project -- Implementing the Code Bug Fixer Backend -- Using Text Areas and Containers -- Testing the Code Bug Fixer App -- Deploying the ChatGPT App to the Azure Cloud -- Summary -- Chapter 4: Integrating the Code Bug Fixer Application with a Payment Service -- Technical Requirements -- Integrating Payments with Stripe -- Setting Up a SQL User Database -- Initializing a SQL Database -- Getting a Browser Fingerprint ID -- Tracking Application Users -- Implementing the Usage Counters -- Adding Payments to a ChatGPT Application -- Building the Payments Page -- Confirming User Payments -- Summary -- Chapter 5: Quiz Generation App with ChatGPT and Django -- Technical Requirements -- Building a Django Project…”

Tabla de Contenidos: “…Database links between autonomous databases -- Summary -- Questions -- Further reading -- Answers -- Chapter 6: Managing Autonomous Databases -- Technical requirements -- Autonomous database actions -- Starting or stopping an autonomous database -- Autonomous database connection -- Performance Hub -- ASH Analytics -- SQL monitoring -- Workload -- Blocking Sessions -- Scale Up/Down -- Cloning -- Updated Network Access -- Access control list -- Administrator password -- Updating the license type -- Renaming a database -- Move Resource -- The service console -- Changing the workload type -- Enabling Operations Insights -- Terminate -- Registering autonomous databases with Oracle Data Safe -- Security Assessment -- Summary -- Part 3 - Security and Compliance with Autonomous Database -- Chapter 7: Security Features in Autonomous Database -- Operating system access restriction -- Dedicated ADMIN users for the database -- Private endpoint -- NSG -- Data Safe -- Security Assessment -- User Assessment -- Data Discovery -- Data Masking -- Activity Auditing -- Data encryption -- Encryption of data at rest -- Encryption of data in transit -- Database backup encryption -- Access control lists -- SQL*Net Connection -- SQL command restrictions -- Automatic security patch update -- Summary -- FAQs -- Index -- Other Books You May Enjoy…”

Tabla de Contenidos: “…Conté "Símbolos cívicos": Oficinas para la Junta de Castilla y León en Zamora / Alberto Campo Baeza, Pablo Fernández Lorenzo, Pablo Redondo Díez, Alfonso González Gaisán y Francisco Blanco Velasco ; El "B", Auditorio y Centro de Congresos de Cartagena / Selgascano arquitectos ; Escuela infantil en Pamplona / Carlos Pereda y Óscar Pérez, Pereda Pérez arquitectos ; Concello de Lalín / Emilio Tuñón Álvarez y Luis Moreno García-Mansilla ; Centro de ocio de Azuqueca de Henares / Ábalos+Sentkiewicz Arquitectos ; Terminal de pasajeros, Aeropuerto Internacional Región de Murica / Josep Maria Casadevall, Carlos Ferrater, Ramón Sanabria, Dolors Sayeras ; Instituto Cartuja de Técnicas Avanzadas en Medicina, Sevilla / José Morales - Sara de Giles ; Edificio de servicios Plaza Mayor UAM / MTM Arquitectos (Javier Fresneda & Javier Sanjuan) ; MUCA, Casa de la Música y Auditorio en Algueña / Jesús Olivares Casado y Miguel Rodenas Mussons (COR Asociados) --- URV…”

Tabla de Contenidos: “…6.15.2 Differences between Classes and Interfaces -- 6.15.3 Variables and Methods in Interfaces -- 6.15.4 Extending Interfaces -- 16.5.5 Subtype -- 6.16 Benefits of Inheritance: Costs of Inheritance -- 6.17 Key Points -- Exercise Questions -- Objective Questions -- Short-answer Questions -- Long-answer Questions -- Assignment Questions -- Solutions to Objective Questions -- Chapter 7: Errors and Exceptions in Java and Multithreaded Programming -- 7.1 Introduction -- 7.2 Errors and Exceptions -- 7.3 Termination or Presumptive/Resumption Models -- 7.4 Types of Exceptions -- 7.4.1 Run-time Exception: Synchronous Exceptions -- 7.4.2 Run-time Exception: Asynchronous Exceptions -- 7.4.3 Compile Time Exception: Checked Exceptions -- 7.4.4 Compile Time Exception: Unchecked Exceptions -- 7.4.5 Exception Hierarchy -- 7.4.6 Benefits of Exception Handling -- 7.5 Usage of Try and Catch Blocks: Exception Handling Mechanism -- 7.6 Handling of Multiple Exceptions by Try and Catch Blocks -- 7.7 Throw, Throws and Finally Keywords -- 7.7.1 Using Finally Block -- 7.7.2 Throw Exceptions -- 7.7.3 Throws Exceptions -- 7.7.4 Re-throwing of an Exception -- 7.7.5 Built-in Exceptions -- 7.8 Creating own exception subclasses -- 7.8.1 Procedure for Throwing Our Own Exceptions -- 7.9 Concepts of Multithreading -- 7.10 Process vs Threads -- 7.10.1 Process -- 7.10.2 Threads -- 7.11 Differences between Multithreading and Multitasking -- 7.12 Life Cycle of Thread -- 7.13 How to Create and Run the Threads? …”

Tabla de Contenidos: “…6 PUESTA EN MARCHA DEL SISTEMA -- 6.1 ADMINISTRACIÓN DE USUARIOS -- 6.1.1 Usuarios -- 6.1.2 El administrador de usuarios -- 6.1.3 Directivas de seguridad local -- 6.2 SISTEMA DE FICHEROS -- 6.2.1 Administrador de discos -- 6.2.2 Cuotas de disco -- 6.3 PERMISOS -- 7 ADMINISTRACIÓN BÁSICA DEL SISTEMA -- 7.1 ARRANQUE Y PARADA -- 7.1.1 Configuración del gestor de arranque del SO -- 7.1.2 Servicios del sistema -- 7.1.3 Procesos -- 7.1.4 Programación de tareas -- 7.1.5 Proceso de parada del sistema -- 7.2 MONITORIZACIÓN DEL SISTEMA -- 7.2.1 Monitor de confiabilidad y rendimiento -- 7.2.2 Visor de eventos -- 7.3 COPIAS DE SEGURIDAD -- 7.3.1 Realizar una copia de seguridad -- 7.3.2 Recuperar una copia de seguridad -- 7.3.3 Configurar opciones de rendimiento -- 8 ADMINISTRACIÓN DE LA RED -- 8.1 ESQUEMA BÁSICO DE RED -- 8.1.1 Configuración de la red -- 8.1.2 Enrutamiento -- 8.1.3 Firewall de Windows -- 8.1.4 DHCP -- 8.1.5 DNS -- 8.2 TERMINAL SERVER -- 8.2.1 Escritorio remoto -- 8.2.2 Servidor de aplicaciones -- 8.2.3 Cliente de Terminal Server -- 8.3 WINDOWS SERVER UPDATE SERVICES -- 8.3.1 Instalación -- 8.3.2 Cliente -- 8.3.3 Administración -- 9 SERVIDORES DE IMPRESIÓN Y DE ARCHIVOS -- 9.1 COMPARTIR ARCHIVOS E IMPRESORAS -- 9.1.1 Compartir una carpeta -- 9.1.2 Acceso a un recurso compartido -- 9.1.3 Administrar recursos compartidos -- 9.1.4 Instantáneas -- 9.1.5 Sistemas de archivos distribuidos -- 9.2 SERVIDORES DE IMPRESIÓN -- 9.2.1 Compartir impresora -- 9.2.2 Servidor de impresión y documentos -- 9.2.3 Cliente -- 10 SERVICIOS DE INTERNET -- 10.1 SERVIDOR WEB -- 10.1.1 Instalación -- 10.1.2 Administración -- 10.1.3 Creación de un nuevo sito web -- 10.1.4 Creación de un directorio virtual -- 10.1.5 Extensiones de servicio web -- 10.1.6 Seguridad -- 10.2 SERVIDOR FTP -- 10.2.1 Instalación -- 10.2.2 Creación de un nuevo sitio FTP…”
Enlace del recurso

Tabla de Contenidos: “…Initial Phase -- 8.1.3. Terminal Phase -- 8.2. Group Cohesiveness -- 8.3. Group Size and Composition -- 8.4. …”

Tabla de Contenidos: “…Modificaciones vinculadas al aspecto externo -- Modificaciones en las estructuras químicas -- 7 LOS TIPOS DE COCCIÓN -- CLASIFICACIÓN DE LAS COCCIONES SEGÚN EL MEDIO DE TRANSFERENCIA DE CALOR -- COCCIONES EN MEDIO NO LÍQUIDO -- GENERALIDADES, TIPOS Y DESCRIPCIÓN -- EQUIPOS Y CONDICIONES DE TRABAJO -- EFECTOS SOBRE LOS ALIMENTOS -- APLICACIONES CULINARIAS -- COCCIONES EN MEDIO GRASO -- GENERALIDADES, TIPOS Y DESCRIPCIÓN -- EQUIPOS Y CONDICIONES DE TRABAJO -- PROPIEDADES DE LAS GRASAS DE FRITURA -- EFECTOS SOBRE LOS ALIMENTOS -- APLICACIONES CULINARIAS -- COCCIONES EN MEDIO ACUOSO -- GENERALIDADES, TIPOS Y DESCRIPCIÓN -- EQUIPOS Y CONDICIONES DE TRABAJO -- EFECTOS SOBRE LOS ALIMENTOS -- APLICACIONES CULINARIAS -- COCCIONES MIXTAS -- GENERALIDADES, TIPOS Y DESCRIPCIÓN -- CONSIDERACIONES ESPECÍFICAS SOBRE ESTOFADOS A PARTIR DE INGREDIENTES CRUDOS -- CONSIDERACIONES ESPECÍFICAS SOBRE ESTOFADOS EN SU JUGO -- CONSIDERACIONES ESPECÍFICAS SOBRE BRASEADOS -- CONSIDERACIONES ESPECÍFICAS SOBRE GUISADOS -- COCCIONES ESPECIALES -- TIPOS DE COCCIONES ESPECIALES -- CONSIDERACIONES ESPECÍFICAS DE LA COCCIÓN A VACÍO -- CONSIDERACIONES ESPECÍFICAS SOBRE LAS COCCIONES CON MICROONDAS -- 8 LA RESTAURACIÓN DIFERIDA: SISTEMAS Y APLICACIONES -- CONCEPTO Y DESARROLLO DE LA RESTAURACIÓN DIFERIDA -- SISTEMA DE CONSERVACIÓN EN CALIENTE -- SISTEMA DE CONSERVACIÓN BAJO REFRIGERACIÓN -- SISTEMA DE CONSERVACIÓN BAJO ULTRACONGELACIÓN -- ACONDICIONAMIENTO DEL PLATO COCINADO EN LA COCINA TERMINAL -- LOS SERVICIOS DE OFERTA EN LA RESTAURACIÓN DIFERIDA -- PARTE TERCERA LA CALIDAD EN TECNOLOGÍA CULINARIA -- 9 TIPOS DE CALIDAD Y CRITERIOS EN TECNOLOGÍA CULINARIA -- LA CALIDAD EN LOS PLATOS COCINADOS -- ASPECTOS NUTRITIVOS DE LA CALIDAD -- ASPECTOS SENSORIALES DE LA CALIDAD -- ASPECTOS HIGIÉNICO-SANITARIOS DE LA CALIDAD -- ASPECTOS INTEGRADOS DE LA CALIDAD…”

Tabla de Contenidos: “…NUEVO PUERTO MARÍTIMO -- C. TERMINAL AEROPORTUARIA -- D. NUEVO SISTEMA DE PROVISIÓN DE AGUA POTABLE -- E. …”

Tabla de Contenidos: “…. -- Infinite iterators -- Combinatoric iterators -- Terminating iterators -- Using generator functions -- How to do it... -- How it works... -- There's more... -- Simulating multithreading with coroutines -- How to do it... -- There's more... -- When to use parallel processing -- How to do it... -- There's more... -- Forking processes -- How to do it... -- How it works... -- There's more... -- How to implement multithreading -- How to do it... -- There's more... -- Advantages -- Disadvantages -- How to implement multiprocessing -- How to do it... -- There's more... -- Chapter 6: Working with Python's Math Module -- Using the math module's functions and constants -- How to do it... -- Working with complex numbers -- How to do it... -- Improving decimal numbers -- How to do it... -- Increasing accuracy with fractions -- How to do it... -- Working with random numbers -- How to do it... -- Using the secrets module -- How to do it... -- Implementing basic statistics -- How to do it... -- Improving functionality with comath -- Getting ready -- How to do it... -- Chapter 7: Improving Python Performance with PyPy -- Introduction -- What is PyPy? …”

Tabla de Contenidos: “…Foreword ix -- Preface xi -- Biography xiii -- 1 Introduction to Satellite Communications 1 -- 1.1 A Brief History of Satellite Communications, 1 -- 1.1.1 Origins of Communications Satellite Technology, 1 -- 1.1.2 Origins of the Communications Satellite Legal Structure - International, 6 -- 1.1.3 Origins of the US Communications Satellite Legal Structure - Domestic, 10 -- 1.1.4 The Merger of Domestic and International Communication Satellite Legal Structures, 12 -- 1.1.5 NASA and Civil Communications Satellites, 12 -- 1.2 Current Major Communications Satellite Systems, 13 -- 1.2.1 Military Communications Satellites, 14 -- 1.2.2 Civil Communications Satellites, 14 -- 1.2.3 Commercial Satellites, 16 -- 2 Overview of the Technology 22 -- 2.1 Introduction, 22 -- 2.2 Radio Frequencies, 24 -- 2.3 Orbits, 31 -- 2.3.1 Low Earth Orbiting Communications Satellites, 31 -- 2.3.2 Geostationary and Geosynchronous Communications Satellites, 34 -- 2.3.3 Intermediate Circular, Medium Earth, and Elliptical Orbiting Communications Satellites, 37 -- 2.4 Satellites and Earth Stations, 39 -- 2.4.1 Basic Components of Communications Satellites, 39 -- 2.4.2 Basic Elements in Satellite Ground Earth Stations, 42 -- 2.5 Channels, Link Analysis, and Networks, 44 -- 2.5.1 Channels, 44 -- 2.5.2 Link Analysis, 46 -- 2.5.3 Networks, 47 -- 3 Early Proposals for Mobile Satellite Communications 51 -- 3.1 Military Interest in Mobile Satellite Communications, 51 -- 3.2 NASA Efforts, 57 -- 3.3 Aerosat, 57 -- 3.4 Maresat, 62 -- 4 Marisat and Marecs: Pioneering Commercial Mobile Satellite Services 65 -- 4.1 Marisat, 66 -- 4.2 Marecs, 69 -- 5 Introduction to INMARSAT 73 -- 5.1 Origins of the INMARSAT Organization, 74 -- 5.2 US Participation in the INMARSAT Organization, 78 -- 5.3 Structure of the INMARSAT Organization, 79 -- 5.4 Ownership of the INMARSAT Organization, 82 -- 5.5 Land Earth Stations (LESs) in INMARSAT, 83 -- 5.6 Mobile Terminals in INMARSAT, 87 -- 5.7 INMARSAT System Services, 90 -- 5.7.1 INMARSAT Maritime Safety Services, 90.…”

Tabla de Contenidos: “…Function Called As Statements -- Chapter 12: Lookup Tables -- Table Data Structure -- Jagged Array Grids -- Preparing Table Data -- Lookup Table Function -- Input Variables and Data Source -- Control String -- Chapter 13: Small-Signal Functions -- AC Analysis -- AC Stimulus Function -- Noise Analysis -- White Noise Function -- Flicker Noise Function -- Look-Up Table Noise Functions -- Correlated Noise Sources -- Chapter 14: Filters -- Time-Domain Filters -- Absolute Delay Filter -- Transition Filter -- Slew Filter -- Frequency-Domain Filters -- Laplace Transform Filters -- Zero-Pole Filter -- Zero-Denominator Filter -- Numerator-Pole Filter -- Numerator-Denominator Filter -- The Z-Transform Filters -- Zero-Pole Filter -- Zero-Denominator Filter -- Numerator-Pole Filter -- Numerator-Denominator Filter -- Chapter 15: Events -- Event Control Statements -- Global Event Functions -- Monitored Event Functions -- Cross Function -- Last Crossing Function -- Above Function -- Timer Function -- Chapter 16: Runtime Support -- Elaboration Queries -- Port Connections -- Parameter Overrides -- Simulation Queries -- Analysis Type -- Kernel Parameters -- Dynamic Probing -- Solver Support -- Announcing Discontinuity -- Bounding Time Step -- Limiting Iteration Steps -- Simulation Control -- Announcing Severity -- Terminating Simulation -- Chapter 17: Input and Output -- File Management -- Opening Files -- File Positioning -- Error Status -- Detecting End-of-File -- Flushing Output -- Closing Files -- Reading Data -- Reading a Line from a File -- Reading Formatted Data -- Displaying and Writing Data -- Text Output -- File Output -- Writing Data to a String -- Escape Sequences -- Chapter 18: Generative Programming -- Generate Blocks -- Generate Statements -- Generate Regions -- Conditional Generation -- Looping Generation -- Hierarchy Scope and Names…”

Tabla de Contenidos: