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"Según un estudio de Linux Foundation, OpenNebula es la única tecnología Europea ...

Cenatic - Dom, 06/08/2017 - 18:31

Entrevista a Rubén Santiago Montero, CTO en Open Nebula Systems.

 

C12G es la empresa española encargada de demostrar las capacidades y madurez técnica, así como el potencial de negocio que las tecnologías open source brindan como piezas fundamentales para la construcción de productos y servicios de excelencia en el área de Cloud Computing. Para ello, ha llevado a cabo la implantación piloto de OpenNebula, cuyos resultados conoceremos en la jornada 'Tecnologías abiertas para la Agenda Digital', que tendrá lugar el próximo 22 de octubre en MediaLab Prado.

PREGUNTA. ¿Por qué crees que el área de Cloud Computing ha sido reconocida como una de las áreas de aplicación de las TIC estratégicas para el país y para sus empresas?

RESPUESTA. Cloud Computing es un término genérico que se aplica a un conjunto de tecnologías que convierten de forma efectiva los servicios IT en un bien de consumo, similar a un servicio o suministros habituales (p. ej. luz, agua o electricidad). La posibilidad no solo de consumir, sino de producir también, las tecnologías de la información como servicio son de vital importancia para la actividad industrial en cualquier ámbito.

 

De esta forma, la Computación Cloud está destinada a jugar un papel clave en el actual entorno económico mejorando la competitividad y productividad, reduciendo barreras de entrada en sectores estratégicos y dando lugar a una nueva industria de servicios que ofrecerá numerosas oportunidades de negocio a las compañías del sector TIC. Por estas razones, tanto España como la Unión Europea han fijado en sus agencias estratégicas el desarrollo e implantación del Cloud Computing.

P. En este área, ¿qué tecnologías son las más potentes y qué valor diferencial aporta el open source respecto a otras?

R. Podemos encontrar exponentes significativos de tecnologías open source en cualquiera de las categorías Cloud tradicionales: en Infraestructura como Servicio (IaaS) OpenNebula y OpenStack; en Plataforma como servicio (PaaS) OpenShift y CloudFoundry; y en Software como Servicio (SaaS) hay tecnologías open source en cualquier ámbito, por ejemplo, gestores de contenido (CMS) o almacenamiento en la nube. Según un estudio de Linux Foundation, OpenNebula es la única tecnología Europea open source para desplegar clouds.

 

La forma de acceso a las tecnologías cloud, dada su naturaleza, es mediante proveedores online. Así, además de las ventajas tradicionales de open source, como son la flexibilidad para adaptar la tecnología a entornos específicos y mayor eficiencia en costes, en el caso de Cloud resulta de vital importancia disponer de tecnologías open source que permitan evitar la dependencia de fabricantes y proveedores específicos. Esto es especialmente importante en organismos públicos para conseguir una mayor capacidad de negociación con proveedores.

P. ¿Cuál es la situación de OpenNebula en el mercado actual en España? ¿Qué tipo de cliente es el que opta por esta plataforma cloud?

R. OpenNebula es una tecnología de Infraestructura como Servicio. El mercado IaaS ha sido el dinamizador y referente de las tecnologías cloud y ha alcanzado un nivel de madurez e implantación importante en los últimos años como servicio online. Sin embargo, su desarrollo en las infraestructuras privadas de las empresas se encuentra en su infancia. Esto es debido principalmente a que el modelo de provisión cloud requiere una adaptación de los modelos y procedimientos tradicionales en la gestión de infraestructura. OpenNebula cuenta con miles de usuarios en todo el mundo, y estimamos que varias decenas en España. Es complicado saber cifras exactas, ya que el código se distribuye libremente y no se mantienen datos de los organismos que descargan el software.

 

Típicamente, empresas con una gran dependencia de las TIC y que disponen de una infraestructura de tamaño medio-grande son las primeras que están adoptando este modelo. Así, empresas importantes del sector financiero, como Produban del Grupo Santander, o instituciones públicas, como CENATIC, RedIris o CSIC son los clientes de referencia de OpenNebula en España en la actualidad. Además hay numerosas empresas pequeñas y medianas que despliegan su cloud con OpenNebula, como es el caso de Rentalia.

P. ¿Cómo está contribuyendo C12G Cloud a los resultados de las acciones encomendadas a CENATIC en el marco de la Agenda Digital?


R. C12G ha desplegado un cloud privado en CENATIC y ha desarrollado y publicado en un catálogo (marketplace) aplicaciones típicas como Hadoop para tratamiento Big Data. Este entorno cloud se ha usado para ilustrar las ventajas de este tipo de entornos de provisión y de las tecnologías open source tanto para usuarios como para administradores de infraestructura y responsables de informática. En una segunda fase, se proporcionó formación por medio de un informe técnico que ilustre el despliegue realizado en CENATIC, guías rápidas de instalación que faciliten a otras organizaciones el despliegue de su propio cloud y un curso orientado a administradores y responsables de informática. Por último, hemos trabajado en la definición de un caso de éxito de la tecnología en entorno empresarial con el fin de ilustrar los beneficios para los diferentes agentes implicados.
P.¿Qué visión vais a aportar desde C12g Cloud a la jornada 'Tecnologías abiertas para la Agenda Digital'?

R.Nos gustaría aportar nuestra experiencia como empresa emprendedora que desarrolla OpenNebula en dos aspectos principalmente: la importancia del código libre y las tecnologías cloud para la industria española y europea y, además, presentar las características de la tecnología OpenNebula para el despliegue sencillo de clouds IaaS.

 

Fecha: 16 de octubre

Fuente: CENATIC

Categorías: Español, Linux

"Creemos que desarrollando tecnología desde España, que es utilizada en todo el ...

Cenatic - Dom, 06/08/2017 - 18:31

Entrevista a Javier de la Torre, CEO en Vizzuality.

 

Vizzuality es una de las empresas españolas, con enorme proyección internacional, que contribuye al crecimiento de la economía digital a través de sus trabajos e innovaciones en el área de la Visualización, una de las áreas estratégicas de aplicación de las TIC en la Agenda Digital de España. Gracias al uso de tecnologías open source, en su caso, CartoDB, procesan millones de datos y los visualizan en mapas para contar historias y facilitar la comprensión de muchos problemas.

PREGUNTA. ¿Por qué crees que el área de la Visualización ha sido reconocida como una de las áreas de aplicación de las TIC estratégicas para el país y para sus empresas?

RESPUESTA. La cantidad de datos que generamos crece de forma exponencial. Las organizaciones cada vez guardan mas datos de su actividad y tienen acceso a mayor cantidad de datos de redes sociales, dispositivos móviles, etc. Esta explosión en la cantidad de datos no se está transformando necesariamente en una explosión de informacion disponible. No obstante, gran cantidad de datos también pueden producir ruido.

 

La visualización proporciona una herramienta para la comunicación de la información de forma clara y efectiva, ya que permite entender información compleja de una forma sencilla. Por tanto, digamos que sin Visualización las organizaciones pueden estar invirtiendo gran cantidad de recursos en recolectar y analizar datos, pero no consiguen extraer la información que necesitan.

P. ¿En este área, qué tecnologías son las más potentes y qué valor diferencial aporta el open source respecto a otras?

R. Actualmente existe una gran cantidad de tecnologías. Principalmente, la innovación se centra en tecnologías web, utilizando JavaScript con HTML5 y WebGL. Existen productos de visualización de datos completos, pero la flexibilidad que proporciona el open source hace posible los desarrollos más interesantes en la industria.

 

Mis herramientas favoritas son, por supuesto, CartoDB para la creación de visualizaciones en mapas, el framework D3 para el desarrollo de visualizaciones muy a medida y, luego, herramientas como Processing, flare, gephi...

P. ¿Cuánto volumen mueve la Visualización, como disciplina, en el conjunto de la industria en torno a los datos?

R. Según distintos estudios, se estima en torno a 4.200 millones de dólares anuales, pero si incluimos áreas como la Geoespacial entonces nos acercamos casi a los 6.000 millones. Si incluimos la parte de Analítica, el volumen es mucho mayor.

P. ¿Cómo está contribuyendo Vizzuality a los resultados de las acciones encomendadas a CENATIC en el marco de la Agenda Digital?

R. En Vizzuality hemos desarrollado CartoDB, una tecnología open source para la visualización de grande cantidades de datos en tiempo real en mapas. Más de 60 mil usuarios alrededor del mundo ya lo han utilizado. Organizaciones como Twitter, NASA, Wall Street Journal, BBVA lo usan para sacarle partido a sus datos geoespaciales. Creemos que desarrollando tecnología desde aquí, en España, que es utilizada en todo el mundo, estamos apoyando a la creación de una industria en torno a los datos.

P. ¿Qué visión vais a aportar desde Vizzuality a la jornada 'Tecnologías abiertas para la Agenda Digital’?


R. Nuestra visión principal es la importancia de la geolocalización en los datos. Cómo sacarle partido a los mismos, la visualización en mapas y tecnología geoespacial de análisis en general.

 

Por otro, lado el hecho de que CartoDB sea una herramienta open source y tenga un modelo SaaS asociado al mismo, puede proporcionar un ejemplo de cómo crear modelos de negocio sostenibles basados en tecnologías de fuentes abiertas.

 

Fecha: 15 de octubre

Fuente: CENATIC

Categorías: Español, Linux

El MINETUR organiza la primera jornada dedicada a Tecnologías abiertas para la Agenda Digital

Cenatic - Dom, 06/08/2017 - 18:31

El próximo día 22 de octubre tendrá lugar la jornada 'Tecnologías abiertas para la Agenda Digital' en MediaLab Prado (Madrid), organizada por el Ministerio de Industria, Energía y Turismo, a través de la Secretaría de Estado de Telecomunicaciones y para la Sociedad de la Información (SETSI) con la colaboración de CENATIC/Red.es. El encuentro tiene como objetivo la presentación del resultado de los estudios y pilotos encomendados a CENATIC sobre el conocimiento, madurez y potencial de negocio de las tecnologías de fuentes abiertas para el desarrollo de proyectos tecnológicos en las industrias del futuro.

 

La Agenda Digital para España (ADpE), diseñada según las prioridades de la Agenda Digital para Europa a través de un proceso abierto, transparente y participativo, establece el desarrollo de un Plan de desarrollo e innovación del sector TIC que busca focalizar los recursos en las iniciativas más relevantes del ámbito digital como el Cloud Computing, las Smart Cities, el Big Data, la Visualización de datos o las aplicaciones para el ecosistema móvil (Movilidad), con la finalidad de situar al país como un destino atractivo para realizar inversiones en estas áreas de aplicación de las TIC.

 

En este contexto, la SETSI y CENATIC acordaron a finales de 2013 la realización por parte de CENATIC de acciones de asesoramiento a la Secretaría de Estado sobre la capacidad de las tecnologías open source para liderar la innovación tecnológica en las áreas identificadas como claves para el desarrollo de la ADpE. La jornada, que tiene lugar en el marco de dichas actuaciones, acercará este conocimiento a las empresas y administraciones públicas, de manera que puedan beneficiarse a la hora de diseñar sus servicios e identificar sus necesidades.

 

Desarrolladores y profesiones técnicos, principales protagonistas

El encuentro está orientado principalmente a los profesionales técnicos y a los responsables de toma de decisiones técnicas estratégicas de empresas y administraciones públicas. El conocimiento de las tecnologías objeto de las encomiendas y pilotos promovidos por CENATIC propiciarán que los expertos asistentes las usen, difundan, exploten y contribuyan en su evolución y desarrollo.

 

En cuanto a la agenda del evento, se ha estructurado en dos bloques temáticos con la finalidad de aglutinar en la jornada matutina los resultados de los pilotos y acciones realizadas en el marco de la colaboración SETSI y CENATIC, y dedicar la tarde a la presentación de las tecnologías de la Agenda Digital por parte de las entidades implicadas y de las comunidades de desarrollo en torno a ellas.


Presentación de resultados e intercambio de conocimiento

  • Durante la mañana se sucederán diferentes ponencias de la mano de empresas como Vizzuality , C12G Cloud, Future Space o InstalTIC, y consultores FOSS independientes como José Manrique, que presentarán los resultados de los proyectos pilotos encomendados sobre las áreas de Big Data, Cloud, IoT y Smart Cities y Visualización y Movilidad.

     

    Por parte de CENATIC/Red.es, Ana Trejo presentará el Catatálogo de soluciones OSS para la Agenda Digital, cuyo objetivo es servir de escaparate para aumentar la visibilidad de los productos open source en cada una de las áreas tratatas.

     

    Estrechamente relacionado con el catálogo, ya que forma parte de él, CENATIC ha creado la Comunidad de Prácticas como punto de encuentro para las empresas, AA. PP. u otros organismos, del que Pop Ramsamy, de CENATIC, ofrecerá todos los detalles.

     

    Se trata, en definitiva, de aglutinar a todos los interesados en este tipo de tecnologías para potenciar el sector, que ya pueden inscribirse a través de la web de registro.

     

    Un espacio abierto a makers y comunidades de desarrollo
    Durante la tarde la actividad se concentrará en la zona de networking, un espacio abierto donde se darán cita las diferentes comunidades del área de Makers e IoT, como Xtrene, Arduino Madrid y Makers Madrid.

     

    Asimismo, en el área de Machine Learning y Big Data también estará presente la comunidad de Machine Learning Spain, que ha convocado a sus miembros para celebrar el meetup mensual en el marco de este evento. En cuanto al área de Movilidad, la protagonista es la comunidad de FirefoxOS, que orientará su participación a potenciar la experiencia de usuario con sus dispositivos. Igualmente, FirefoxOS realizará su habitual meetup de comunidad en la zona de networking a lo largo de la tarde.

     

    Las actividades con un alto componente práctico enfocadas a las comunidades se realizarán en paralelo a una presentación de Taiga, el gestor de proyectos ágiles recientemente liberado por la empresa española Kaleidos.

     

    Fecha: 15 de octubre de 2014

    Fuente: CENATIC

     

     

Categorías: Español, Linux

El fin de Adobe Flash para 2020

Barrapunto - Vie, 04/08/2017 - 12:07
Categorías: Español, Linux

LibreOffice 5.4 disponible

Ubuntu life - Vie, 28/07/2017 - 21:04

No sé cuant@s usaran LibreOffice (yo sinceramente desde que lo descubrí soy más de usar KingSoft) pero hoy gracias a Barrapunto he visto que se encuentra disponible una nueva versión, y aquí dejo el video (subtitulado) con sus nuevas características.


Categorías: Español, Linux

GoT wallpaper

Ubuntu life - Lun, 17/07/2017 - 23:18

Hoy es el día, después de más de 1 año de espera vuelve game of thrones.
Como excusa dejo esta imagen (a gran resolución) y que creo queda bien como fondo de pantalla.
La encontré leyendo Xataka
Por cierto impresionante episodio. El invierno ya llego. El norte recuerda. Deja a un lobo vivo y las ovejas nunca estarán a salvo…


Categorías: Español, Linux

The Invisible Exhibition at UDS

Ubuntu Accessibility - Dom, 01/05/2011 - 21:30

Imagine that all the lights go out…

The Invisible Exhibition is a unique interactive journey to an invisible world, where in total darkness you find your way only by touch, sounds and scent.

Give us your blind trust!

If you join us, you will also be able to understand what life is like without one of the senses that  provides us with the most information, to live without your sight. At this exhibition you will be lead by blind or partially sighted people on a journey that will change perception and possibility even in your mind.

Interesting?
Strange?
Weird?
Or .. perhaps feels natural?
Could an hour of blindness open your eyes?
Could you use your computer running Ubuntu like this?

In the “Meet Daniela” post on April 6 we mentioned the Invisible Exhibition in Budapest which will be going on while many folks are in town for the Ubuntu Developer Summit (UDS). We have picked up the idea for attending this at UDS and with the Ubuntu Hungarian team have planned an outing open to all UDS attendees to the exhibition on the evening of Wednesday May 11th.

We need to buy the tickets for this exhibition in advance and arrange an English language guide so we request that everyone registers by this Friday the 6th to be guaranteed a spot so we can contact the exhibition with an estimate on the size of our group. However, we will accept registrations through the afternoon of Monday the 9th as we will be purchasing tickets Monday evening.

Registration is being handled through the LoCo Directory here: http://loco.ubuntu.com/events/team/949/detail/

Costs are detailed here, we’re not sure yet whether we’ll meet the group rate and an English-speaking guide costs extra per group: http://www.lathatatlan.hu/en/what-is-it/tickets/ A couple of community members will be handle paying for the tickets up front, and once we know how much final costs are we will let you know and you can pay us (in cash) at UDS.

We must meet directly after the final session of the day as we plan on leaving at 6:15 sharp to catch public transit over to the exhibition. After this exhibition we plan of going out to dinner, but you’re welcome to make your own plans.

If you have accessibility needs or any other questions please don’t hesitate to contact lyz@ubuntu.com as soon as possible so we can be sure to make proper arrangements.


Categorías: Accesibilidad, Inglés

Meet Daniela

Ubuntu Accessibility - Mié, 06/04/2011 - 23:26
Continuing our series of design personas we would like you to meet Daniela, here she is diving into a training session at the university pool, where she is a keen swimmer. Now, unlike most people who throw themselves into a pool, Daniela can’t see that she is going to land in water because she is blind. There are many different types of visual impairment, Daniela is classified as NLP or Nil Light Perception, she can’t see a thing, and never has done. Daniela loves her swimming, and she is very good at it, she enters lots of competitions in the S11 paralympic classification. She is used to winning. She says: “Being blind, I depend on synthesized speech and a refreshable Braille display to access my computer. I need to be able to use all sorts of documents in different formats including: Microsoft Office, and PDF-documents. E-mail access and a book scanner are also vital to my being able to function in my job and private life. Low sound quality is difficult for me, so text should be pronounced clearly. I also would like to communicate with people using voice messages or even voice chats.” Behaviors
Daniela uses her laptop extensively, she is never without it as it is her primary means of organising her busy life and her competition schedule. Use The Orca screenreader allows Daniela to navigate around the Ubuntu desktop, because she does not know or care where on the screen things are positioned she thinks of them in terms of a stack of applications, each one consisting of a circular list of widgets she can tab through. Audio is really important to her, she uses Ekiga, Mumble and Skype to talk to different groups of friends. Why using Ubuntu? Daniela has been using Orca for some time and is familiar with the way gnome applications are normally arranged. She wants to use the operating system that her friends also use. Why a challenge? Daniela tried to install Ubuntu Maverick herself, but the installer could not be read by the screen reader so she had to ask a sighted friend to help by describing what was on screen. We tried to install Ubuntu Natty using the screen reader profile and just about managed, but with the benefit of functional eyes. [blip.tv http://blip.tv/play/AYKwokoA%5D (If you are reading this on planet Ubuntu then click through for the video) We filed a few bugs as a result:

Do have a go at this yourself, this is all available using the standard desktop CD and it is quite fertile ground for the keen bug hunter. If you would like to help fix some of these bugs or discuss them further then please do join the #ubuntu-accessibility IRC channel on Freenode.

She is quite used to the Orca screenreader, but would like more applications to be tested with it to make sure they operate logically.

When applications crash and dialogs unexpectedly pop up it is hard to figure out what has happened as her mental map of where things are in relation to each other gets disrupted. Life Goals In 2012 the Paralympic games are on in London, Daniela wants to represent her country in the S11 swimming events. This will involve yet more travel and a lot of alarms to remind her when to be at different parts of the Olympic Village. She will also be using it to find information about places to explore and to get access to Twitter updates from the organisers and other athletes. Experience Goals Daniela has plenty of sighted friends who can help, but she would very much like to be more independent when using her computer. How to be Daniela Try walking up to the edge of a swimming pool blindfolded and do a proper dive in, harder than it sounds! When using the computer, you have to be blind too, but it isn’t essential to wear a blindfold or shut your eyes, start by unplugging or turning off the monitor, you won’t be needing that (Ubuntu doesn’t boot without a monitor at the moment, so you may need it for a bit). To see if you are a good enough typist put a towel or cloth over your hands and keyboard, or even one of these funky keyboard gloves: but don’t worry, if you need to see the keys just take it away, that isn’t a critical part of your testing. Do make sure you are not cheating and looking at any lights on the computer such as hard disk activity lights or lights on peripherals. Try installing Ubuntu using the voice prompts and getting around the desktop and your favorite applications. UDS Today was the day for the community sponsorship mails if you are going to UDS in Budapest then why not arrange a visit with a bunch of friends to the Invisible Exhibition http://www.lathatatlan.hu/en/ you will be given a white cane and led into an area of total darkness where your guide (who is blind) will take you on a tour of the exhibition. On Thursday they do a dinner in the dark followed by an invisible party! This is a fantastic way to get an understanding (even if brief and limited) of what it is like for Daniela and the many many people like her. If you are interested in this please add a comment to this blog post.
Categorías: Accesibilidad, Inglés

Accessibility Testing Part I

Ubuntu Accessibility - Lun, 14/03/2011 - 22:16

One of the issues faced by many developers and testers is the ability to test for accessible installations and applications without having the specific disability. Hopefully, we are going to explain how to perform some of that testing without cutting off a hand or poking out your eyes.

What is ISO testing? It is the testing of each CD image before it is released for public use. Most of us are familiar with the releases, called milestones, of alpha and beta CDs. Well, before those images are released, they are tested to insure they work. That testing is done by Quality Assurance Testing, and we can always use help. We also run tests in between those milestones, since finding bugs and trying to get them fixed right at release time is problematic. The earlier the bugs are found, the better chance we will get them fixed for the final release.

Who does the testing? I am not a developer nor a programmer. I am, however, a tester. I can download any CD, follow simple directions to test that CD, and file bugs if it fails to work the way it should. I voluntarily do this testing because I want to see users able to use the CD the way it is intended. If I find a problem that gets fixed before the user gets the CD, they can use it with fewer problems.

When we are testing the milestone ISO, we track the results of the testing at http://iso.qa.ubuntu.com/, called the ISO Tracker. When using the tracker, the tester looks at which CD is being tested. By clicking on the CD symbol to the left of the description, the correct image can be downloaded or z synced. Clicking the description, you see several tests listed. To the left of each test is a symbol which takes you to the test case, which is a description of how to perform that test. Clicking the test itself takes you to a place where you tell the tracker you have started or finished the test.

When we not testing the milestones, we can still use the test cases, which are located at http://testcases.qa.ubuntu.com/. If you are testing the installation, you can go directly to the install tests at http://testcases.qa.ubuntu.com/Install. The only difference between this and the ISO testing of milestones is that you will not be logging your tests on the ISO Tracker. Please file bugs you find, and use the testcases every couple of days. Since we are specifically interested in Accessibility testing, we will use the installation testcases at http://testcases.qa.ubuntu.com/Install/DesktopAccessibility. Each test case will describe how to perform the test, whether or not you are disabled. At the time of this writing, we have the screen-reader test. We will eventually have tests for the Magnifier and On-Screen Keyboard as well. We will also attempt to add individual tests for the applications.

How are you going to run this test without looking at the monitor? Well, turn it off, of course, if it is an external monitor. That lets you see exactly what those with severe visual impairment sees. If you can not turn the monitor off, put a towel over it. Many visually impaired individuals can distinguish light and dark. Using a white towel gives you the “light means on” type of indicator. Of course, you still can not read the monitor screen.

The third step of this test is “Select your language and press ENTER”. Inevitably, at this point, the question is asked “How do I  select my language with a towel over the monitor?”. Remember, this is exactly what happens for the visually impaired user. The default language is English. Just press ENTER to select it. No, it might not be what you really want, but it is what you can select. The other trick we use is to memorize where the language we want is. Have an assistant tell you how many down or up arrows to use to get to your language of choice. Is this getting annoying yet? Are you concerned that you might not be able to do this test? Relax, and try to have fun. This is a new way of trying to install for you. But while doing this, take some time to think about the user who is forced to always do things this way.

Post written by Charlie Kravetz


Categorías: Accesibilidad, Inglés

Indicators and Accessibility

Ubuntu Accessibility - Mar, 22/02/2011 - 13:06

With all the major user interface changes that are coming in Ubuntu Natty, its easy to get lost in exactly what is changing, how, and why. Things like how you access your most frequently used applications, files, and devices, are all changing. If not in Natty, then in the very near future with Natty+1 and beyond. With all these changes, there is one change that hasn’t been heavily talked about, at least in the Ubuntu accessibility community, and the change that I am about to talk about has been around since Lucid, if not longer.

Traditionally, both on Linux desktop environments and Windows, there has been the concept of the system tray, where applications and system services would place icons, to inform you about various pieces of information, such as whether you have new mail, the amount of battery power left in your laptop, your sound volume, new instant messages, etc. Both in GNOME and Windows, one would have to navigate to the system tray area, or the notification area in GNOME, to interract with these icons. Sometimes you might want to get more information about your laptop’s power state, or you might want to change the network you are connected to, or you want to retrieve that message that just came in. With various screen readers on Windows, it is possible to review and interract with these icons with one or more keystrokes, but depending on what you wanted to do, you would either have to left click, right click, or even double click to get what you are after, whether it be a menu, a window to pop up, etc. Since at least Lucid, there has been ongoing work to change the way users are presented with information from such icons, and change the way the user interracts with them. Enter indicators.

An indicator is an icon on the top panel, which is used to do much the same as a system tray icon, i.e network strength, sound volume, new messages, etc. However indicators take it one step further, by changing the icon image, depending on the status of the indicator. In addition, indicators are sorted into logical groups of tasks, which reduces the clutter on the panel. The indicators we have as of Natty, are:

  • * Network: Handles everything to do with connecting to, discovering, and configuring your system’s network access.
  • * Sound: This indicator not only lets you change the sound volume and configure various sound settings, it also gives you a common set of controls for any media player that communicates via the empress protocol. Both Rhythmbox and Banshee communicate via this protocol, with more Linux media player support coming as more developers learn about, and implement this protocol.
  • * Bluetooth: This indicator allows you to configure access to bluetooth devices, adjust preferences, send/receive files, etc.
  • * Power: This indicator provides status for yor computer’s battery if it has one, as well as for any recognised device that is connected, such as a media player, or phone.
  • * Messaging: This indicator groups all messaging related tasks together. Everything from email, twitter/identica accounts, and instant messages is found here. With all Ubuntu’s common messaging applications such as evolution, pidgin, gwibber and xchat, this indicator will let you know when you have any new messages. Opening the indicator will then show you the individual programs that have messages waiting for you. More about how indicators are opened, and how they display information to the user in a minute.
  • * Date and time: This indicator’s name should be self explanetory, lets you see the current date/time, as well as access a calendar, which will also have evolution calendar integration, so you can look up your appointments without even having to open evolution.
  • * User, OR MORE COMMONLY REFERRED TO AS ME: This indicator is used to show, as well as access, controls related to the CURRENTLY LOGGED IN user, both setting your status for chat/instant messaging applications, as well as accessing and configuring your user profile, including your picture. This indicator also gives access to Ubuntu One. You can find out more about Ubuntu One at http://one.ubuntu.com.
  • * Session: This indicator provides access to session conTrolls, logging out, shutting down/restarting, suspending/hibernating your system, as well as switching to the guest, or other user. You can also lock your screen from here.

The major difference between indicators and system tray applications, is that indicators are all menus, and the area where the indicators are shown is a menu bar. In other words, you can click on an indicator, and then use the arrow keys to move between all the indicators and their menus, just like you would a normal menu bar. Its worth noting that there are controls both in the date/time indicator, and the sound indicator, that allow you to use the left/right arrow keys for adjusting various settings, most notebly, the sound volume.

So for a user who uses a screen reader such as Orca, how do you access the indicators? The answer depends on whether you are using the traditional GNOME environment with the GNOME panel at the top, or Unity. For the traditional GNOME environment, the indicators themselves are placed into indicator applets, that are added to the GNOME panel. You can add and remove various groups of indicators, based on what you want to use. The panel still allows the use of traditional system tray like applets, so for GNOME users, you can still use the older system tray icons if you wish, however you may change your mind when you have used indicators a few times.

For Maverick and earlier, the indicators in the gnome panel are in 2 groups. Networking, sound, bluetooth, power, and messaging indicators make up the first group, and the Me and session indicators make up the second group. There is date/time for Maverick and earlier, however this is the clock applet, i.e you have to access this via conventional means, navigating to the panel, locating the clock applet, and activating it. To access the first group, you press Super + M. Note that Super is also known as the Windows key. Pressing Super + M will place you onto the messaging indicator, and then you can navigate to whatever indicator you want to interract with, via the arrow keys. NOTE: Super + M conflicts with a Compiz binding to invert screen colours. Please check to see whether you are using Compiz prior to trying this keystroke. If you are using Compiz, it is suggested you reconfigure the colour inversion keystroke to something else, as the Super + M keystroke for the messaging indicator is not currently configurable. Configuring Compiz is out of the scope of this post. To access the session/second group of indicators, press Super + S, again this is not currently configurable. This will place you on the session indicator. When using either keystroke, the indicator menu will open, allowing arrow key navigation. Since the indicators are grouped, it is not possible to move between the groups of indicators with the arrow keys. In Natty, all above mentioned indicators will be in the one group, and the Super + S keystroke is the only keystroke that allows navigation to the indicators, but because all the indicators are in one group, the arrow keys can be used to move between all the indicators. FOr Natty and later releases, date/time is an indicator.

For Unity, things are quite different. Not only can you not use legacy system tray icons, but once you navigate to the top panel, you can access all menus for the current application, as well as indicators, by using the arrow keys. There are no grouping barriers between any top panel items. To access indicators in Unity, press the F10 key. This will place you on the first menu of the currently running application. You then press left arrow twice, to navigate to the other end of the panel, and navigate through the indicators. More information about how to make better use of the Unity environment will be given at a later date.

Note that if you access the indicators in Maverick and earlier, you will not get much information about that indicator, i.e no info about how loud your volume is, either from the indicator when you open it, or when you navigate to the volume control, and no information about new messages, or current network/bluetooth/power status. The one exception to this is the Me indicator, where you will here your username when navigating to that indicator menu. This is because that indicator has a label. The indicator design calls for very minimal use of labels, and only where absolutely necessary. As stated earlier, the icon is supposed to give a visual representation of that indicator”s status. Accessibility wise, things will be partially addressed in Natty, where navigating to the main indicators will give you some idea of what indicator you are on, and if that indicator icon represents a particular status, you will hear/read a textual description of that status. For example, navigating to the volume indicator will give you your sound volume in percentage. Navigating to the messages indicator will tell you if you have new messages, and of course, the network indicator will tell you what type of network you are on, whether it is wired or wireless, and the signal strength if applicable.

The indicator menus also use icons to convey further information about status, particularly in for wireless networks, as well as for applications with new messages waiting in the messaging indicator. It is hoped that this will be fully addressed in Natty+1, as the components of the indicator framework that are responsible for these icon menu items need to be extended to support textual descriptions of menu item icons.

There may or may not be more indicators introduced in the future. Applications can create and display their own indicators as a separate icon, and it will be up to individual indicator authors as to whether they include a textual description of their indicator icon, but it is hoped that any application that needs to use indicators, will be able to be grouped under one of the main indicators discussed above, thereby keeping panel clutter to a minimum.

For more information about indicators and accessibility, feel free to contact the Ubuntu Accessibility team, https://wiki.ubuntu.com/Accessibility.

 

This post was written by Luke Yelavich


Categorías: Accesibilidad, Inglés

Meet Faisal

Ubuntu Accessibility - Jue, 27/01/2011 - 23:39

A common technique for user interface design is to create a set of personas, fictional characters who will be using the software and have different needs. These help developers to scratch not just their own itch, but the itch of these characters that will be using the software. Canonical has a set of personas already in use by the design team, most are able bodied people from different backgrounds, but one of them is a visually impaired user. The Ubuntu Accessibility team is working on a project to expand the set of design personas to include a wider variety of different users with accessibility needs. Each one should have a name and a background, they should seem as real as possible, whilst being completely fictional, they even have a plausible looking picture (Creative Commons licensed). The descriptions include what their needs are and what they find difficult to do with the current release of Ubuntu. Our personas are all lovely people who just need a little bit of your help making their favorite operating system to work well for them as well as it works for everyone else. If you are a developer of any applications in Ubuntu or websites or community we want you to think about each of our persona characters and just ask yourself questions like “This works for me, but is it broken for the personas?”

Our first persona is Faisal, a 28 year old from India, here he is whilst out for a drink with a bunch of his mates:

photo by Kaushal Karkhanis (BY-NC-ND)

Faisal teaches a class of 6 and 7 year old children in a primary school in Assam, India. He studied at an Indian Institute for Information Technology and certainly knows his way around the computer! He would like to make better use of technology in the classroom to bring the lessons to life and inspire the children to explore the world around them. Faisal has rheumatoid arthritis http://en.wikipedia.org/wiki/Rheumatoid_arthritis which was diagnosed whilst he was studying at IIIT and has progressively made it harder for him to use his hands to operate the keyboard and mouse of his computer. When he first started teaching the arthritis didn’t cause much of an issue but now he is worried that if he became unable to continue he would find it very hard to get another job. He now doesn’t use the computer in the first lesson of the day when his hands hurt the most, and has found some ways to make it easier. He uses a very slow mouse cursor as he doesn’t have the fine motor control. He finds it very hard to resize windows with the standard Ubuntu themes, he has learned to hold alt and use the middle mouse button to resize because he just can’t hit the window borders. One hand on the keyboard for the alt key and moving the mouse whilst pressing the middle button is a tricky bit of coordination but he gets by. In the evenings when preparing lesson plans for the next day Faisal tends not to use the keyboard but uses the Dasher on screen keyboard, this allows him to type with just small movements of the mouse to select letters as they fly across the screen, it isn’t as fast as typing on the keyboard but it is much more comfortable and he can use it for long periods. Faisal also suffers from Deuteranopia, a form of colour blindness which is quite common in men, affecting about 1%, it can also affects women, but not nearly as many, about 0.01%. This means he struggles to distinguish red and green colours, so red icons on a green background just fade together.

Behaviours Learning

Faisal is a teacher and an academic, he will have a play with new things to discover how they work, then he likes to read documentation and manuals to back up what he has found out for himself.

Use

Faisal has a laptop, he tried a netbook but the keys were too small and close together. In the classroom he plugs it into a television for the students to see the screen too. The school plans to get more projectors but there isn’t one in his class yet.

Sharing

Several other teachers at the school were impressed by Faisal’s use of Ubuntu in the classroom, they want to know more about it and Faisal has promised to spend a day showing them how to use it during the holidays.

Adoption

He is keen to look at new ways to control the computer, he is looking forward to finding out if the Unity desktop will make his window management easier or harder. He likes to try new hardware as well and wonders if the Apple magic touchpad would be a better way for him to control Dasher.

Why using Ubuntu?

Faisal uses Ubuntu because he likes being able to adapt it to suit himself. He enjoys participating in the community support, both asking questions and helping other people.

Why a challenge?

Using a computer is an increasing challenge for Faisal as the keyboard gets more painful and can be used for shorter periods at a time. Using Dasher is relatively comfortable but it is slow, requires a lot of concentration and segfaults too much. Ultimately his condition is incurable and progressive, but Faisal wants to carry on working and enjoying what he does while he can.

Life Goals

It is quite hard in India for those with a disability to get a job, Faisal has no intention of leaving the school and wants to grow as a teacher in the area he loves. In two years from now Faisal will still be taking a sabatical from the teaching job to lecture trainee teachers on the use of technology in the classroom.

Experience Goals

Faisal would like applications to make efficient use of the keyboard and give him the flexibility to use multiple input devices and on screen keyboards. He would like applications to be tested for colour blindness to ensure that the colours used don’t blend together.

How to be Faisal

To test Ubuntu to make sure it works for Faisal and for people like him, you need to make your hands worse. Use sticky tape to tie some fingers together, observe how this makes some key combinations harder to reach. For a lack of mouse control crank up the mouse accelleration settings to the maximum, and instead of holding it in your dominant hand as normal swap to the other hand. If this is too easy try moving the mouse by prodding it with clenched fist rather than holding the mouse itself. You could also try tying some string around your wrist and attaching a weight to it that hangs off the desk to see the effect of a lack of control and fatigue. To use Dasher as a keyboard install it from the repos and launch with “dasher -a direct”. Unplug your regular keyboard and put it out of easy reach, just to remove the temptation to press a key if you get stuck! At some point Dasher will segfault – now what are you going to do? Faisal is colour blind, so you need to be colour blind too. Install compizconfig-settings-manager package and turn on the colour filter plugin in the accessibility section. Press super+d (the super key is the one with the little Windows flag on it) to turn on the full screen filter, then ctrl+super+s five times to step through the filters to the Deuteranopia setting (the Protanopia filter doesn’t work in Maverick 10.10 due to bug 599206 which has been fixed in Natty 11.04)

We do hope you enjoyed meeting Faisal, our first Accessibility Persona, why not come and join the team in the #ubuntu-accessibility channel on Freenode IRC and help us write the rest of the set.


Categorías: Accesibilidad, Inglés

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