Cursos a distancia gratuitos y con certificado

Las nuevas tecnologías permiten la realización de numerosas tareas cotidianas de una forma más rápida y eficaz. Un claro ejemplo lo encontramos en varias universidades de renombre como Harvard o Toronto, que ya aprovechan las diferentes herramientas que ofrecen algunas plataformas de Internet para impartir cursos online y gratuitos a personas residentes en cualquier país o región el mundo.

Sitios destacados

Algunas de las plataformas de educación a distancia más importantes son: Coursera, Edx o Udacity. Todas cuentan con la tecnología y aplicaciones necesarias para instruir eficazmente a sus miles de alumnos; vídeos explicativos, tests, grupos de discusión, y otras soluciones interactivas.

Por otro lado, el principal inconveniente que pueden encontrar ciertas personas al acceder a estos sitios web es el idioma; todo su contenido y material educativo se presenta en Inglés, por tanto los usuarios que dominen esta lengua lo tendrán más fácil. De todos modos, muchos de sus vídeos cuentan con la opción de incluir subtitulos en español o ingles; una utilidad que mejora significativamente el aprendizaje.

En cuanto al contenido de sus clases, éstas abarcan diferentes categorías y temas, por ejemplo: ciencias, computación, economía, medicina, nutrición…  Además, no importa la edad o nacionalidad del usuario, cualquiera que lo desee puede registrarse, tan solo es necesario contar con una conexión a Internet, un ordenador y muchas ganas de aprender. Una vez finalizado el curso y si el estudiante ha pasado todas las pruebas con éxito, recibirá un certificado sellado por una prestigiosa y popular universidad.

Así pues, parece que el sector de la enseñanza apuesta en un futuro por este tipo de plataformas, donde alumnos de todo el mundo pueden recibir clases sin necesidad de realizar largos desplazamientos diarios, cumplir con horarios estrictos, o desembolsar grandes sumas de dinero. Todo ello gracias al uso de nuevas tecnologías y programas que proporcionan el mejor material de cada centro educativo.

Un comentario en “Cursos a distancia gratuitos y con certificado

  1. I enjoyed readnig through Pro Android Media. The book gives you a good understanding of the media capabilities of the Android platform, covering images, audio, and video. Web services, from the point of view of media consumption and publishing, are also explained. Each media section starts out by explaining how to display the media using the built-in Android applications or your own custom Views, and then proceeds to cover advanced concepts such as browsing or streaming the media. Additionally, each section covers how to capture the media and potentially edit it on the device. Pro Android Media assumes a basic knowledge of Android programming, though it makes sure to touch on the basics of a concept (intents, activities, etc.) the first time it is introduced. The first 3 chapters cover Images: displaying, capturing and editing. Chapter 1 uses the built-in camera intent to capture an image. In doing so, the chapter refreshes on some of the basics of Android programming (intents, content providers, URIs, etc.), in a way that provides a friendly refresher to the novice Android programmer but doesn’t take up much of the chapter. Chapter 2 has you build a camera application for more flexibility, such as time-delayed photography. It covers capturing and saving images, both internally and to the SD card. Chapter 3 delves into image editing and browsing. This includes scaling, rotating, mirroring, flipping, color corrections, etc. It doesn’t necessarily cover the math behind the concepts (though links to appropriate Wikipedia pages), but introduces you to the APIs you would use for various image editing tasks. Chapter 4 covers Graphics: How to deal with raw Bitmaps and drawing concepts such as using the Canvas for shapes, lines and text. Chapters 5 8 cover Audio: playback, background audio and network streaming, capturing, and synthesis/analysis. There are examples showing how you can retrieve, store and query the metadata of media on the device. Audio recording can be done via three separate (and increasingly complex, though more flexible) interfaces, and the book gives examples of each and why you’d need to use one over the other. In Chapter 8, you build a DJ scratching interface using the touch screen, as well as an audio visualizer (FFT). One great inclusion is the state diagrams for the MediaPlayer and MediaRecorder. These interfaces aren’t extremely complex, but having the diagrams helps you get a good feel for the interface. Chapters 9 11 cover Video: playback, browsing and streaming, and capture. Chapter 10 covers advanced video concepts such as streaming video from the internet and gives an example of playing from YouTube’s servers. The video chapters are finished off by covering video capture, and there are good (though brief) explanations of the capture profiles, codecs, settings and encoders you can use. Chapter 12 finishes the book and covers media consumption and publishing using Web Services. It felt a little out of place initially (this chapter’s concepts are likely covered in most general Android books), but I was thankful that they included it as it is a great compressed summary of what interfaces you might need if you want to interact the web. It gives examples of how you’d use JSON, REST and XML web services, as well as how you can incorporate the user’s geolocation in your API calls. There are examples of how to interact with Flickr and Blip.TV, both consuming/browsing media and uploading content to them. The overall writing style is easy to read and to the point. The example code is solid and well explained, often inline, which helps with understanding. It’s not a long book, nor does it need to be. The book is great for someone who has been tasked to implement some specific interaction with media in their Android app, yet doesn’t know the right approach or interfaces to use yet.

Deja un comentario

Tu dirección de correo electrónico no será publicada. Los campos necesarios están marcados *

Puedes usar las siguientes etiquetas y atributos HTML: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>