¿Alguna vez se imaginaron cómo quedarían con bigotes? Facetache es un sitio donde podemos subir nuestra foto y agregarnos todo tipo de bigotes para ver cómo qué tal nos quedan.
En fin, es una webapp boba para pasar un poco el rato :P
Enlace: Facetache
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Heroes of Newert es un juego de estrategia basado en el motoro gráfico del Warcraft III y muy parecido al Leage of Legends. La novedad con este juego es que ha pasado a ser free-to-play y que se puede jugar desde Linux, es decir, que podemos jugar a este juego totalmente gratis desde nuestro Linux, tan solo tendremos que descargarnos el cliente e instalarlo, podemos descargarlo desde la web oficial: http://www.heroesofnewerth.com/
Os dejo una captura de pantalla del juego, aunque podéis ver más en su galería de imágenes:
Si lo que estás buscando es un juego parecido al LOL (Leage of Legends) gratuito y que funcione en Linux, aquí tienes uno ;) ;) ;)
Fuente: Ubuntizando.
It’s been a while, but now I’m back! Theses next two sessions will dive into the infrastructure that’s grown up around Node. We’ll take a look at two tools that will help you manage your Node environment and make you more productive, beginning with NVM today.
Television is huge nowadays, even with the online videos being out there. It is the easiest way to transmit your message to people who are generally offline. The Hollywood industry is huge, even if video streaming is available all over the place on the internet – mostly for free. Even TV stations are moving to the internet today. This should give everybody an idea of how big video really is. Videos can make the current era more interactive and send different messages across in a more powerful, easier and effective way.
Videos can also go viral very easily. Good videos usually reach their targets quite fast through sharing and word of mouth. If you look closely at how many views viral videos have, you will be surprised. Think that all these viewers can be converted into customers.
With so many tutorials available on the internet, developing your own video should not be a big problem anymore. Moreover, if you have a background in video development, you know for sure its advantages over other media and would probably like to make the most of your skills. Regardless of the kind of background you have, a video is always something useful. It can be for advertising, for entertainment or for informing people about events, products from the branch or even news. But there is always a question after developing a video. Where should you host it?
First sight, it looks like YouTube should be the default choice. It looks much better than a self-hosted video competitor and gives you features that you normally should develop yourself. YouTube already has them installed and ready to go. It only takes a few seconds to set everything up. It is quite easy to follow all the intuitive steps and upload a video, add a description, fill in the title and even edit the video if you wish. Another advantage of YouTube is the speed of processing. You can have everything up and running in 10 minutes and you do not need any coding skills.
If you look deeper though, you will realize that YouTube has a huge disadvantage. Link baiting (content or feature within a website designed to gain attention or encourage others to link to a specific source) only works in YouTube’s favor, so they get all the fame. If you succeed in getting visitors to your webpage, you will have to somehow convince them to click on the links in the description. And let’s imagine you reach millions of views with your amazing viral video. You will probably be sorry for choosing to host it on YouTube.
But is it better to host it on your own server and display it with a custom player? Well you could do that, but first you need some coding skills. If you do not have them, YouTube is probably the best choice for you. If you have these skills however, it should not be a problem for you. But you can’t ignore the truth: self-hosting a video will require much more time and effort than just hosting it on YouTube.
Image by lusi
If you look at YouTube, it is supported by cloud computing software, it’s very fast even on slow internet connections and is tested against immersive attacks. Allowing millions of people all over the world to watch the British Royal Wedding without interruptions is something nobody has ever done before – and few will probably even take on the challenge. YouTube even has applications for iOS and Android, so watching a video from a portable device is quite easy as well.
If you reach success with your self-hosted video and will have millions of potential viewers, will you be able to ensure the same speed and quality? And how can you guarantee the server will be up all the time – will it be able to sustain such a huge amount of traffic? Remember Flash is not supported on iOS. How many people with an iPhone or an iPad will be able to show the video to their friends?
But let’s look at both YouTube and self-hosted possibilities and draw some conclusions.
The fact that you have full control over the video you host is very, very important. It is something you will not be able to enjoy on YouTube. This helps you preserve your copyright on the video and allows you to place permanent links to it. Moreover, the control is even bigger when you think of how nobody can delete it. Normally a video from a self-maintained host can’t be downloaded without a special ripper, which might not be so easy to find or use. And incorporating website analytics and tracking users actions is also something you will be able to do with a self-hosted video.
During the past couple of years YouTube started to add advertising on the videos hosted at them. This is something totally avoidable if you host your videos yourself. Keeping your visitors far from ads that could distract them is a key decision. The users will be able to watch your videos without having to worry about an ad popping on their screens.
The traffic your videos will bring in is totally yours. No more fame for YouTube based on your skills and money. Moreover, link baiting is something that will work great on your site. If your video is successful, your link will be shared all over the place.
While YouTube’s design is pretty OK, you will be able to design your own player if you host your video yourself. You can make something which is more web-friendly by using HTML5 Video Converters, so that different portable devices can access the file too.
Buying a quality host with 99.9% uptime will not be cheap. If you do not have big plans with your website, it might not be worth investing the money into such a product.
As mentioned above, you will need some serious coding skills to be able to develop a video embedding software. You could, however, also use something like Video Lightbox, but your control over its functionality will be limited.
Speed is very important nowadays. It is more or less impossible to load a video on your host as fast as you would load it on YouTube. And if two thousand of people want to watch your video at the same time, you are in for troubles. The video will freeze or will simply be unavailable. This will annoy people and will reduce the chances of them seeing it through. There is a quite high risk of not being able to send your message across.
Self-hosted videos can limit your exposure. If you host it on YouTube, you will be found through the search box or through the “similar videos” feature. This is inexistent on your own host.
Pros
Cons
For hosting a video on YouTube you will have to pay nothing. Money is very important for a start-up company. Being able to find such a high-quality, free solution is definitely tempting. You can simply upload the video on YouTube and embed it on your website and the problem is solved. YouTube will take care of all the duties and it guarantees your video will be up incredibly close to 100% of the time.
The audience on YouTube is huge, with more than 800 million unique visitors each month. That’s more than 10% of the world’s population. Even people who’ve never heard of your website or company have high chances to watch your video. And if they like it, they will share it on social media. Thanks to relevant searches and keywords you use, you will also be shown in related videos. It is so easy for a relevant video to get views on YouTube.
People also trust YouTube videos much more than any self-hosted one, simply because of its reputation, which has grown even bigger since Google acquired the US giant.
The video servers of Google are top-notch, probably the best in the world. Google also invests millions of dollars into the infrastructure and develops video delivery technologies. YouTube is a trendsetter. Therefore videos have to load quickly. And they do! There is no reason in quitting YouTube because a video is slow to load. There is no such thing.
As mentioned in the first part of the article, no coding skills are required to host a video on YouTube. You don’t have to know anything about scripts, players, codecs, flash or HTML5. You upload the video and in a matter of (few) minutes you can already watch it. It can’t be easier than on YouTube.
There is unfortunately no control over your own video. The moment you upload it on YouTube, it is Google’s. If somebody complains about it, it can get removed quite fast, so you have to make sure your video does not interfere with any Google law or rule. Your videos can also be downloaded by everybody using an online ripper – this is quite easy to do. You only need the link and to know how to click on the download button.
Some videos may even be geo-restricted or blocked, so not available all over the world. And although YouTube advertises an almost perfect uptime, it is indeed just “almost”. If something happens to their servers, then for a probably short period of time the videos will not be available.
Seeing all those YouTube ads is annoying sometimes. Google usually makes a good profit out of popular videos by adding an advertising when the users play it. And they have no plans to share the money with you. And if you look at the problem from a user’s point of view, it is quite bugging for some of them to have a video interrupted by an ad they may not be even interested in.
By hosting a video at YouTube, you will also lose a lot of traffic, as explained earlier. Every bit of it will go to them. And users can also get distracted quite fast by related videos. Potential customers can be lost very fast, so you have to be aware of this and develop a video that will keep their interest and attention.
On YouTube there is a very small choice of layouts for the players. Sure, many times the design does not matter, as users watch a video and move on. But sometimes a customized design could be very useful. YouTube does not help you here at all.
Pros
Cons
The conclusion is not so clear this time, as it depends very much on a webmaster’s needs and preferences. I prefer to host all the videos I develop on YouTube. It is so easy and I do not want to use many hours for coding when I’ve already used many for developing the video. But it might just be me… and millions other users. :-)
What do you think about hosting a video on YouTube? Have you ever hosted a video on your own website? How good/bad an experience was that?
Artículo publicado por Adrian Cho el 27 de julio de 2012 en Science Now
La próxima década será la década de la materia oscura, según afirman algunos científicos, dado que los esfuerzos para detectar este material extraño demostrarán o descartarán las más prometedoras hipótesis acerca de lo que es. Pero los astrónomos puede que hayan detectado señales de materia oscura en el corazón de nuestra propia galaxia, la Vía Láctea, según afirmaron hoy un par de astrofísicos.
Datos recopilados por el telescopio espacial de rayos gamma Fermi de la NASA revelan un exceso de rayos gamma procedentes del centro galáctico, que podrían estar producidos por la aniquilación de partículas de materia oscura entre sí. Kevork Abazajian y Manoj Kaplinghat de la Universidad de California en Irvine, lo recogen en un artículo publicado en el servidor de preimpresión arXiv. “Definitivamente hay una fuente ahí y encaja con la interpretación de que es materia oscura”, afirmó Abazajian. Pero otros investigadores dicen que el exceso pueden ser artefactos por la forma en la que Abazajian y Kaplinghat modelan el flujo de rayos gamma, o quizás pueda generarse a partir de otras fuentes más mundanas.
Rayos gamma en la Vía Láctea Way © by NASA Goddard Photo and Video
Los astrónomos tienen suficientes pruebas de que la materia oscura provee la mayor parte de la gravedad necesaria para hacer que las estrellas no escapen de las galaxias. y los cosmólogos han demostrado que compone el 85% de toda la materia del universo. Pero los físicos no saben qué es la materia oscura.
La hipótesis más aceptada es que la materia oscura puede estar compuesta de partículas masivas que interactúan muy débilmente, también llamadas WIMPs, predichas por algunas teorías. Las WIMPs serían lo bastante masivas para producir mucha gravedad pero por otra parte interactuarían con la materia ordinaria muy débilmente. Cada galaxia se formaría dentro de una vasta nube de WIMPs.
Los físicos buscan WIMPs de varias formas distintas. Algunos tratan de localizarlas utilizando sensores muy sensibles bajo tierra, otros esperan producirlas en el colisionador de átomos más grande, el Gran Colisionador de Hadrones, en Suiza. Las WIMPs también se aniquilarían entre sí al chocar, produciendo partículas ordinarias como los rayos gamma, por lo que los astrofísicos están peinando los cielos buscando señales de estas aniquilaciones.
Abazajian y Kaplinghat afirman que más de 400 investigadores que trabajan con el observatorio espacial Fermi pueden haber encontrado esta prueba. Los dos teóricos analizaron datos recopilados entre agosto de 2008 y junio de 2012 centrándose en una zona de 7 por 7 grados de cielo alrededor del centro galáctico. Para cada uno de los cuatro rangos de energía cartografiaron las emisiones a lo largo del firmamento. Ajustaron cada uno de los mapas con un “modelo de línea base” que incluía 17 fuentes puntuales de rayos gamma que Fermi ya había encontrado en el área, además de un fondo “difuso” que tiene en cuenta la emisión general del centro galáctico y un fondo espacial uniforme.
Luego combinaron los datos con otro modelo que incluía contribuciones de las aniquilaciones de materia oscura, incluyendo estimaciones teóricas de su distribución y de cómo las aniquilaciones de partículas producen rayos gamma. Encontraron que al añadir las aniquilaciones de materia oscura se mejoraba el ajuste, sugiriendo que hay un exceso de rayos gamma que tienen origen en la materia oscura.
Otros investigadores, incluyendo a Daniel Hooper, del Laboratorio Nacional del Acelerador Fermi en Batavia, Illinois, han realizado afirmaciones similares. De hecho, el mismo Abazajian se había posicionado previamente contra esta interpretación. Pero los nuevos análisis demuestran que la hipótesis de la materia oscura se ajusta a los datos de tres formas clave distintas, según dice el propio Abazajian: tiene la distribución energética adecuada, la distribución espacial adecuada, y la intensidad correcta. “Cuando lo vi me dije, ¡Dios mío!” aseguró. Abazajian, no obstante, advierte que los rayos gamma pueden emanar de una fuente menos exótica como púlsares no detectados previamente.
También podrían explicarse de manera más sencilla, afirma Stefano Profumo, físico teórico de la Universidad de California en Santa Cruz, y miembro del equipo del satélite Fermi. Los análisis de Abazajian y de Hooper dependen críticamente del modelo de fondo galáctico difuso, declaró Profumo. Este modelo se ha derivado para describir un área mucho mayor alrededor del centro galáctico, dijo, y “es completamente ciego a los detalles del centro galáctico”. Por lo que su uso para ajustar los datos puede producir resultados confusos, advirtió. Aun así, Profumo está de acuerdo en que el centro galáctico es el primer lugar al que hay que mirar para buscar pruebas de la materia oscura.
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