João Patrício

Setúbal, Portugal

ainda ontem comi bagas.

  • Enjoy all the latest versions of your favorite KDE software in Chakra.

    Chakra Linux at 2018-03-18T23:15:23Z

    Also, the new music player babe is now available, together with several other package updates.

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  • Our second release for 2018 is out

    Kontalk Network at 2018-03-19T10:57:01Z

    Kontalk 4.1.4 brings support for typing status in group chats and fixes a dozen bugs.

    McClane, João Patrício, EVAnaRkISTO likes this.

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  • Plasma Mobile on Librem 5 progress report

    at 2018-03-13T14:41:58Z

    Initial Plasma Mobile enablement on Librem 5 i.MX 6 test boards

    “Working closely with the KDE community, we were able to install, run, and even see mobile network provider service on Plasma Mobile! The purpose of this article is to show the progress that has been made with Plasma Mobile on the current Librem 5 development board. Here, the setup steps and overcome challenges are highlighted. ”

    Not bad =)

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  • New blogpost: "Wordpress for Android and short blog posts"

    Laura Arjona at 2018-03-14T06:37:09Z

    New blogpost: “Wordpress for Android and short blog posts”

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  • CERN pays tribute to Stephen Hawking

    ParticleNews at 2018-03-14T09:28:33Z

    "CERN pays tribute to Stephen Hawking"

    Stephen Hawking during a visit to the Large Hadron Collider (LHC) tunnel in March 2013, prior to the Inaugural Fundamental Physics Prize Ceremony in Geneva. (Image: Laurent Egli/CERN)

    Theoretical physicist, Stephen Hawking has died today, 14 March, aged 76.

    “Hawking’s results have a great impact on theoretical research done at CERN”, states Gian Giudice, Head of Theoretical Physics at CERN.

    “For me, the highlights of Hawking’s work are in black hole physics and the origin of the universe: Hawking radiation and thermodynamics of black holes, area theorem on black-hole horizon surface and the Hartle-Hawking state of the primordial universe,” explains Giudice.

    Stephen Hawking at CERN in 2009
    Professor Stephen Hawking giving a conference “The Creation of the Universe” in the main CERN auditorium in September 2009. (Image: Maximilien Brice/CERN)

    “Stephen Hawking was one of the giants, and stars, of physics of the past century. He has inspired a whole generation with his ability to present complex science in a popular way,” continues Eckhard Elsen, CERN Director for Research and Computing. “He spurred interest in black holes and the physics related to it, including future gravitational wave experiments.”

    Stephen Hawking at CERN in 2006
    Stephen Hawking during his tour of the ATLAS cavern in 2006 with (left to right) theorist Thomas Hertog, ATLAS spokesperson Peter Jenni and ATLAS deputy spokesperson, and now CERN Director-General, Fabiola Gianotti. (Image: Maximilien Brice and Claudia Marcelloni/CERN)

    “Each time Stephen Hawking visited CERN, we were impressed by his great enthusiasm, vitality and passion for knowledge. He was a brilliant example on how to face disease with courage. He was a warrior.” – Fabiola Gianotti, CERN Director-General.

    “A giant of our field has left us, but his immortal contributions will remain forever.” – Gian Giudice, Head of Theoretical Physics at CERN.



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  • ActivityPub is a real standard now!

    Christopher Allan Webber at 2018-01-23T16:10:02Z

    ActivityPub is a W3C Recommendation! Yes! At last! Finally!

    Let your social networks be free!

    ActivityPub was basically 3 years of my life, and there were points were I wasn't sure if the time and energy I was spending on it was worth it. I'm sure it was today. Thank you everyone who participated in the standards process, have implemented... or are going to implement! You made it all worth it!

    martinho, Jackson S de Jesus, Distopico Vegan, João Patrício and 16 others likes this.

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    Hmmm, I see your profile here needs some updating xD

    JanKusanagi at 2018-01-24T20:25:09Z

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    On a related note, I stumbled upon a progress report of the FreedomBox project. In it they talk about integrating distributed social networks and in particular about Diaspora and GNU Social. How about someone bringing ActivityPub and accompanying implementations to their attention?

    Marko Dimjašević at 2018-01-25T18:56:03Z

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    I can't wait to release the version of with AP support

    Evan Prodromou at 2018-01-25T21:46:23Z

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  • 5.1 stable + announcement ML

    AJ Jordan at 2018-01-06T11:34:00Z 5.1 stable is out! plus, a new announcement mailing list!

    George Standish, Mike Linksvayer, mohadip, Matteo Bechini and 6 others likes this.

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  • ActivityStreams 2.0 vocabulary plan

    AJ Jordan at 2017-11-06T05:24:53Z is finally about to gain ActivityStreams 2.0 output support, which is the first step towards ActivityPub. In doing this we need to translate between different vocabularies - the plan for this is at

    Reviews would be appreciated.

    Tom Tishken, Tupulpo, João Patrício, JanKusanagi and 5 others likes this.

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    GO GO GO! =)

    JanKusanagi at 2017-11-06T14:38:22Z

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  • How much does a kilogram weigh?

    ParticleNews at 2017-11-03T15:28:30Z

    "How much does a kilogram weigh?"

    The National Institute of Standards and Technology (NIST)-4 Kibble balance measured Planck's constant to within 13 parts per billion in 2017, accurate enough to assist with the redefinition of the kilogram. (Image: J. L. Lee/NIST)

    The Kilogram doesn’t weigh a kilogram any more. This sad news was announced during a seminar at CERN on Thursday, 26 October by Professor Klaus von Klitzing, who was awarded the 1985 Nobel Prize in Physics for the discovery of the quantised Hall effect. “We are about to witness a revolutionary change in the way the kilogram is defined,” he declared.  

    Together with six other units – metre, second, ampere, kelvin, mole, and candela – the kilogram, a unit of mass, is part of the International System of Units (SI) that is used as a basis to express every measurable object or phenomenon in nature in numbers. This unit’s current definition is based on a small platinum and iridium cylinder, known as “le grand K”, that weighs exactly one kilogram. The cylinder was crafted in 1889 and, since then, has been kept safe under three glass bell jars in a high-security vault on the outskirts of Paris. There is one problem: the current standard kilogram is losing weight. About 50 micrograms, at the latest check. Enough to be different from its once-identical copies stored in laboratories around the world. 

    To solve this weight(y) problem, scientists have been looking for a new definition of the kilogram.

    At the quadrennial General Conference on Weights and Measures in 2014, the scientific metrology community formally agreed to redefine the kilogram in terms of the Planck constant (h), a quantum-mechanical quantity relating a particle’s energy to its frequency, and, through Einstein’s equation E = mc2, to its mass. Planck’s constant is one of the fundamental constants (physical quantities that are constants of natural phenomena, such as the speed of light or the electric charge of a proton).

    Planck’s constant will be assigned an exact fixed value based on the best measurements obtained worldwide. The kilogram will be redefined through the relationship between Planck’s constant and mass.

    “There’s nothing to be worried about,” says Klaus von Klitzing. “The new kilogram will be defined in such a way that (nearly) nothing will change in our daily life. It won’t make the kilogram more precise either, it will just make it more stable and more universal.”

    However, the redefinition process is not that simple. The International Committee for Weights and Measures, the governing body responsible for ensuring international agreement on measurements, has imposed strict requirements on the procedure to follow: three independent experiments measuring the Planck constant must agree on the derived value of the kilogram with uncertainties below 50 parts per billion, and at least one must achieve an uncertainty below 20 parts per billion. Fifty parts per billion in this case equals approximately 50 micrograms – about the weight of an eyelash.

    Two types of experiment have proved able to link the Planck constant to mass with such extraordinary precision. One method, led by an international team known as the Avogadro Project, entails counting the atoms in a silicon-28 sphere that weighs the same as the reference kilogram. The second method involves a sort of scale known as a watt (or Kibble) balance. Here, electromagnetic forces are counterbalanced by a test mass calibrated according to the reference kilogram.

    And that’s where the important discovery made by Klaus von Klitzing in 1980, which earned him the Nobel Prize in Physics, comes into play. In order to get extremely precise measurements of the current and voltage making up the electromagnetic forces in the watt balance, scientists use two different quantum-electrical universal constants. One of these is the von Klitzing constant, which is known with extreme precision, and can in turn be defined in terms of the Planck constant and the charge of the electron. The von Klitzing constant describes how resistance is quantised in a phenomenon called the “quantum Hall effect”, a quantum-mechanical phenomenon observed when electrons are confined in an extra-thin metallic layer subjected to low temperatures and strong magnetic fields.

    This is truly a big revolution,” von Klitzing says. “In fact, it has been dubbed the biggest revolution in metrology since the French Revolution, when the first global system of units was introduced by the French Academy of Sciences.”

    CERN is playing its part in this revolution. The Laboratory participated in a metrology project launched by the Swiss Metrology Office (METAS) to build a watt balance, which will be used to disseminate the definition of the new kilogram through extremely precise measurements of the Planck constant. CERN provided a crucial element of the watt balance: the magnetic circuit, which is needed to generate the electromagnetic forces balanced by the test mass. The magnet needs to be extremely stable during the measurement and provide a very homogenous magnetic field.

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  • El fuego arrasó Galicia. Ahora se preparan los cazadores.

    at 2017-10-27T18:23:49Z

    Después de los terribles incendios que han asolado Galicia, y que han calcinado 36.000 hectáreas de monte, PACMA pidió la semana pasada a la Xunta que aprobase una moratoria para prohibir la caza inmediatamente en toda la región gallega.

    ¿Existe un despropósito mayor que salir a cazar animales que han huido del fuego y que se han quedado sin su hábitat?

    Mientras estamos esperando la respuesta de la Xunta a nuestra petición, los cazadores han pedido “solidaridad” para que las sociedades de caza que no se han visto afectadas por el fuego, cedan sus superficies a los cazadores a los que se les han quemado sus zonas.

    Nos resulta incomprensible que ante una tragedia como la que ha sufrido Galicia, que ha supuesto un daño medioambiental irrecuperable por décadas, los cazadores estén pensando en salir a matar animales.

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  • El Ayuntamiento de Barcelona (...) apuesta por el 'software' libre

    EVAnaRkISTO at 2017-10-25T21:24:24Z

    A ver si es verdad y, sobre todo, entienden la diferencia entre código abierto y software libre (y la importancia de éste).

    El Ayuntamiento de Barcelona da la espalda a las grandes tecnológicas y apuesta por el 'software' libre 

    Oficina de atención del Ayuntamiento de Barcelona para trámites ciudadanos. / FRANCESC CASALS

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  • The brand new Plasma5.11 and the latest Applications and Frameworks by KDE are now available in ChakraLinux.

    Chakra Linux at 2017-10-23T22:55:23Z

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  • Meet the DUNEs

    ParticleNews at 2017-10-23T13:29:04Z

    "Meet the DUNEs"

    Inside one of the protoDUNE detectors, currently under construction at CERN (Image: Max Brice/CERN)

    A new duo is living in CERN’s test beam area. On the outside, they look like a pair of Rubik’s Cubes that rubbed a magic lamp and transformed into castle turrets. But on the inside, they’ve got the glamour of a disco ball.

    These 12m x 12m x 12m boxes are two prototypes for the massive detectors of the Deep Underground Neutrino Experiment (DUNE). DUNE, an international experiment hosted by Fermilab in the United States, will live deep underground and trap neutrinos: tiny fundamental particles that rarely interact with matter.

    “Learning more about neutrinos could help us better understand how the early Universe evolved and why the world is made of matter and not antimatter,” said Stefania Bordoni, a CERN researcher working on neutrino detector development.

    These DUNE prototypes are testing two variations of a detection technique first developed by Nobel laureate Carlo Rubbia. Each cube is a chilled thermos that will hold approximately 800 of liquid argon. When a neutrino bumps into an atom of argon, it will release a flash of light and a cascade of electrons, which will glide through the electrically charged chamber to detectors lining the walls.

    Inside their reinforced walls sits a liquid-tight metallic balloon, which can expand and contract to accommodate the changing volume of the argon as it cools from a gas to a liquid.

    Even though theses cubes are huge, they are mere miniature models of the final detectors, which will be 20 times larger and hold a total of 72 000 tonnes of liquid argon.

    In the coming months, these prototypes will be cooled down so that their testing can begin using a dedicated beam line at CERN’s SPS accelerator complex.

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  • denial-of-service security fixes now available

    AJ Jordan at 2017-10-01T22:10:02Z

    I've just published security fixes for several denial-of-service vulnerabilities in All admins are impacted and should update ASAP.

    Please share this widely.

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    Dude. You rule. Updating now!

    Stephen Sekula at 2017-10-01T22:13:39Z

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    Update complete. Took the opportunity to jump from 4.X to 5.X.

    Stephen Sekula at 2017-10-01T22:31:33Z

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  • Andrej Dundović at 2017-09-23T13:13:24Z

    What the Commission found out about copyright infringement but ‘forgot’ to tell us
    #pirate #torrent #EU #infringement #copyright

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  • Call for Testing: Dianara 1.4.0 Beta

    at 2017-09-13T22:33:31Z

    It's that time of the... trimester? again!

    Last week I tagged the development version of Dianara, my client as beta, preparing for the release of v1.4.0.

    I have a few details to polish, but some wider testing would be helpful. If you can build from source, now's a good time to do so and test it. If you already run an often-updated version from git, feedback would be good.

    The main changes since v1.3.7 include:

    • Movable side panel and movable toolbar, after unlocking (left side of screenshot).
    • Attachment icons will match the mimetype of the attachment, using your system's iconset (upper-right).
    • Optional "activity icons" in the minor feeds (lower-right).
    • Notifications will also make the window "demand attention", which usually results in some sort of taskbar/dock entry flashing in some way, in most desktops. Enabled by default, but can be disabled.
    • Better zoom control in the image viewer.

    (Full/current CHANGELOG file)

    As announced, v1.3.7 was the last version to support Qt 4.x. Qt 5 is required for 1.4.0. The bad news is that, at this time, users of distributions such as Debian 9 can't build with the version of QOAuth present in their repositories, based on Qt 4. Current Debian Testing/Sid is fine though.

    Test away, and let me know if you find any issues that are not listed in the BUGS file, or in the issue tracker.

    Also, if you maintain any translations, now is a good time to update them =)

    Cheers! o/

    Keane Ingram, martinho, pedrosocial, João Patrício and 4 others likes this.

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    Genial =D

    A probar Dianara 1.4.0 beta!

    GNUstav Huarcaya at 2017-09-13T23:20:11Z

  • Public Money? Public Code! - Join the FSFE Campaign

    coyote at 2017-09-13T12:07:40Z

    Public institutions spend millions of Euros every year for the development of new software that is specifically tailored to their needs.

    Unfortunately, most of this software is closed source.

    This means that your tax money is being used to pay for software that cannot be modified or even studied. Most public institutions pay to develop programs that they do not or cannot release to the public. When other institutions need to solve similar problems, they have to develop the same software again. And each time the public - including you - has to foot the bill.

    Paying a company to provide closed software also leads to vendor lock-in. Vendor lock-in is when an institution contracts a certain provider and later discovers it is very hard to switch to another one.

    Companies with a stranglehold on an institution can artificially restrict usage and features of their products. They can forbid you to install their programs on more than a handful of computers, disable saving your work in a certain format, or hike the prices of licenses for no reason.

    The biggest problem, however, is the safety of your data.

    In spanish →

    João Patrício, Claes Wallin (韋嘉誠), Dana, GNUstav Huarcaya and 1 others likes this.

    maisun, Claes Wallin (韋嘉誠), Claes Wallin (韋嘉誠), Claes Wallin (韋嘉誠) and 10 others shared this.

    Oh, but how would the poor corrupt politicians move their dirty money around then??

    JanKusanagi at 2017-09-13T13:26:37Z

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  • Clearing a path to the stars

    ParticleNews at 2017-09-12T17:28:43Z

    "Clearing a path to the stars"

    Astronomers are at the forefront of the fight against light pollution, which can obscure our view of the cosmos.

    Header: Clearing a path to the stars

    More than a mile up in the San Gabriel Mountains in Los Angeles County sits the Mount Wilson Observatory, once one of the cornerstones of groundbreaking astronomy. 

    Founded in 1904, it was twice home to the largest telescope on the planet, first with its 60-inch telescope in 1908, followed by its 100-inch telescope in 1917. In 1929, Edwin Hubble revolutionized our understanding of the shape of the universe when he discovered on Mt. Wilson that it was expanding. 

    But a problem was radiating from below. As the city of Los Angeles grew, so did the reach and brightness of its skyglow, otherwise known as light pollution. The city light overpowered the photons coming from faint, distant objects, making deep-sky cosmology all but impossible. In 1983, the Carnegies, who had owned the observatory since its inception, abandoned Mt. Wilson to build telescopes in Chile instead.

    “They decided that if they were going to do greater, more detailed and groundbreaking science in astronomy, they would have to move to a dark place in the world,” says Tom Meneghini, the observatory’s executive director. “They took their money and ran.” 

    (Meneghini harbors no hard feelings: “I would have made the same decision,” he says.)

    Beyond being a problem for astronomers, light pollution is also known to harm and kill wildlife, waste energy and cause disease in humans around the globe. For their part, astronomers have worked to convince local governments to adopt better lighting ordinances, including requiring the installation of fixtures that prevent light from seeping into the sky. 

    Inline_1: Clearing a path to the stars
    Artwork by Corinne Mucha

    Many towns and cities are already reexamining their lighting systems as the industry standard shifts from sodium lights to light-emitting diodes, or LEDs, which last longer and use far less energy, providing both cost-saving and environmental benefits. But not all LEDs are created equal. Different bulbs emit different colors, which correspond to different temperatures. The higher the temperature, the bluer the color. 

    The creation of energy-efficient blue LEDs was so profound that its inventors were awarded the 2014 Nobel Prize in Physics. But that blue light turns out to be particularly detrimental to astronomers, for the same reason that the daytime sky is blue: Blue light scatters more than any other color. (Blue lights have also been found to be more harmful to human health than more warmly colored, amber LEDs. In 2016, the American Medical Association issued guidance to minimize blue-rich light, stating that it disrupts circadian rhythms and leads to sleep problems, impaired functioning and other issues.)

    The effort to darken the skies has expanded to include a focus on LEDs, as well as an attempt to get ahead of the next industry trend. 

    At a January workshop at the annual American Astronomical Society (AAS) meeting, astronomer John Barentine sought to share stories of towns and cities that had successfully battled light pollution. Barentine is a program manager for the International Dark-Sky Association (IDA), a nonprofit founded in 1988 to combat light pollution. He pointed to the city of Phoenix, Arizona. 

    Arizona is a leader in reducing light pollution. The state is home to four of the 10 IDA-recognized “Dark Sky Communities” in the United States. “You can stand in the middle of downtown Flagstaff and see the Milky Way,” says James Lowenthal, an astronomy professor at Smith College.

    But it’s not immune to light pollution. Arizona’s Grand Canyon National Park is designated by the IDA as an International Dark Sky Park, and yet, on a clear night, Barentine says, the horizon is stained by the glow of Las Vegas 170 miles away.

    Inline_2: Clearing a path to the stars
    Artwork by Corinne Mucha

    In 2015, Phoenix began testing the replacement of some of its 100,000 or so old streetlights with LEDs, which the city estimated would save $2.8 million a year in energy bills. But they were using high-temperature blue LEDs, which would have bathed the city in a harsh white light. 

    Through grassroots work, the local IDA chapter delayed the installation for six months, giving the council time to brush up on light pollution and hear astronomers’ concerns. In the end, the city went beyond IDA’s “best expectations,” Barentine says, opting for lights that burn at a temperature well under IDA’s maximum recommendations. 

    “All the way around, it was a success to have an outcome arguably influenced by this really small group of people, maybe 10 people in a city of 2 million,” he says. “People at the workshop found that inspiring.”

    Just getting ordinances on the books does not necessarily solve the problem, though. Despite enacting similar ordinances to Phoenix, the city of Northampton, Massachusetts, does not have enough building inspectors to enforce them. “We have this great law, but developers just put their lights in the wrong way and nobody does anything about it,” Lowenthal says. 

    For many cities, a major part of the challenge of combating light pollution is simply convincing people that it is a problem. This is particularly tricky for kids who have never seen a clear night sky bursting with bright stars and streaked by the glow of the Milky Way, says Connie Walker, a scientist at the National Optical Astronomy Observatory who is also on the board of the IDA. “It’s hard to teach somebody who doesn’t know what they’ve lost,” Walker says.

    Walker is focused on making light pollution an innate concern of the next generation, the way campaigns in the 1950s made littering unacceptable to a previous generation of kids. 

    In addition to creating interactive light-pollution kits for children, the NOAO operates a citizen-science initiative called Globe at Night, which allows anyone to take measurements of brightness in their area and upload them to a database. To date, Globe at Night has collected more than 160,000 observations from 180 countries. 

    It’s already produced success stories. In Norman, Oklahoma, for example, a group of high school students, with the assistance of amateur astronomers, used Globe at Night to map light pollution in their town. They took the data to the city council. Within two years, the town had passed stricter lighting ordinances. 

    “Light pollution is foremost on our minds because our observatories are at risk,” Walker says. “We should really be concentrating on the next generation.”

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  • Astronomy Picture of the Day for 2017-03-20 12:30:01.760103

    Astronomy Picture of the Day (Unofficial) at 2017-03-20T17:30:02Z

    Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

    2017 March 20
    See Explanation.  Clicking on the picture will download
 the highest resolution version available.

    The Aurora Tree
    Image Credit & Copyright: Alyn Wallace Photography

    Explanation: Yes, but can your tree do this? Pictured is a visual coincidence between the dark branches of a nearby tree and bright glow of a distant aurora. The beauty of the aurora -- combined with how it seemed to mimic a tree right nearby -- mesmerized the photographer to such a degree that he momentarily forgot to take pictures. When viewed at the right angle, it seemed that this tree had aurora for leaves! Fortunately, before the aurora morphed into a different overall shape, he came to his senses and capture the awe-inspiring momentary coincidence. Typically triggered by solar explosions, aurora are caused by high energy electrons impacting the Earth's atmosphere around 150 kilometers up. The unusual Earth-sky collaboration was witnessed earlier this month in Iceland.

    Follow APOD on: Facebook, Google Plus, Instagram, or Twitter
    Tomorrow's picture: kinetic orion

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