CONTRA EL PINGALISMO CASTRISTA/ "Se que no existe el consuelo que no existe la anhelada tierrra de mis suenos ni la desgarrada vision de nuestros heroes. Pero te seguimos buscando, patria,..." - Reinaldo Arenas

Mostrando entradas con la etiqueta tecnologia. Mostrar todas las entradas
Mostrando entradas con la etiqueta tecnologia. Mostrar todas las entradas

domingo, septiembre 28, 2014

Fuel of the future produced at Russia’s high-tech underground plant

Spent fuel storage in Zheleznogorsk
http://rt.com/news/188332-mox-nuclear-fuel-production/
Russia’s ‘Breakthrough’ energy project enables closed a nuclear fuel cycle and a future without radioactive waste. The first batch of MOX nuclear fuel has been manufactured for the world’s only NPP industrially power generating breeder reactors.
The first ten kilograms of the mixed-oxide fuel (MOX) – a mixture of plutonium and uranium dioxides (UO2 and PuO2), have been industrially produced by Russia’s nuclear monopoly, Rosatom, at the Mining & Chemical Combine (GKhK) in the Krasnoyarsk region.
A world first, tablets of the fuel of the future have been put on serial production and are destined for Russia’s next generation BN-800 breeder reactor (880 megawatts), currently undergoing tests at the Beloyarskaya nuclear power plant.
The production line, now undergoing start-up and adjustment, was assembled in a mine 200 meters underground and will become fully operational by the end of 2014.
Fast fission reactors solve the problem of depleted uranium nuclear fuel on the planet. They can ‘burn’ not only ‘classic’ uranium-235, (scarce and already coming to an end), but also uranium-238, which is abundant, and expands the world’s nuclear fuel capacity by an estimated 50 times.
Fuel for breeder reactors could even be made from nuclear waste, which from an ecological point of view is a priceless advantage.
The GKhK facility will be equipped with a unique dissolvent reactor that will break down nuclear waste containing plutonium and extract plutonium dioxide to be used in MOX-fuel production.
Also, while producing electric energy, breeder reactors actually generate more fissile material, and that one also can be used as nuclear fuel.
The GKhK plant is Russia’s leading full nuclear fuel cycle complex, processing nuclear waste from power generating nuclear reactors to establish future nuclear fuel ring closure.
MOX-fuel for previous versions of fast breeder reactors in the USSR and Russia had limited production at Russia’s oldest Mayak nuclear processing facility.
Starting from 2016, industrial-level MOX-fuel production in Russia will run at full capacity.
“Produced MOX-fuel tablets fully conform to the technical specifications,” Rosatom’s statement said, adding that the fuel will now be thoroughly tested.

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sábado, agosto 23, 2014

Fallecio a los 78 anos el renombrado ingeniero cubano Ysrael Seinuk

El ingeniero que diseñó las torres Trump, el Lápiz Labial de Philip Johnson y el Centro Time Warner, el cubano judío Ysrael A. Seinuk, falleció en Nueva York tras forjar una carrera de fundación para los grandes proyectos constructivos modernos.
Seinuk fue una autoridad mundial en la construcción de rascacielos y edificios de acero. Con su muerte desaparece un maestro de generaciones de ingenieros y un empresario exitoso, con una visión de futuro.
Seinuk falleció la semana pasada, a los 78 años. Sus restos fueron trasladados a Israel a pedido suyo.
“Ha sido una muerte inesperada de un gran amigo y de un cubano de gran estatura. Ysrael fue un ser excepcional, un verdadero genio, y personalmente lo considero el ingeniero estructural más importante del mundo”, dijo a CaféFuerte el arquitecto Nicolás Quintana, uno de los artífices del movimiento arquitectónico moderno en Cuba.
Desde joven, Seinuk  sintió predilección por la física y las matemáticas, y antes de ingresar a la universidad en Cuba impartió clases de esas materias a los estudiantes de bachillerato. Se graduó de ingeniero civil en La Universidad de La Habana en 1954 y se exilió en 1960 en Estados Unidos, adonde llegó con apenas unos pocos dólares en el bolsillo.
En 1969 comenzó su carrera académica como profesor de la Escuela de Arquitectura Irwin S. Chanin, de Nueva York, donde fue Decano Interino de Arquitectura. A su muerte dirigía el Departamento Estructural de la escuela.
En 1977 creó su propia compañía, que lleva su nombre.
Recibió más de 60 premios de excelencia por su contribución profesional; en el 2005 fue nombrado por la revista Time como uno de 25 hispanos más influyentes de Estados Unidos. Fue el único ingeniero de Estados Unidos invitado por la Institución de Ingenieros Estructurales de Gran Bretaña a participar en la publicación de estándares para el diseño de rascacielos en la Unión Europea después del 11 de septiembre del 2001.
Entre sus obras conocidas están 4 Times Square, el Museum of the Jewish Heritage, la remodelación de la famosa Estación Central de Nueva York y la Torre O-14 en Dubai.
En los últimos años su compañía desarrolló varios proyectos en Miami, como el Performing Arts Center.
Una de las innovaciones introducidas por Seinuk en sus obras fue el uso de hormigón en rascacielos en Estados Unidos, un método de construcción que se empleó en Cuba desde la década del 40, y que se aplicó en edificios como el Focsa.
“Cuando yo llegué a los Estados Unidos en 1960 -estoy hablando de casi dos décadas después- todavía no se usaba en Nueva York ese tipo de hormigones. Se consideraba que un edificio de hormigón de 16 pisos ya era alto”, recordó en una entrevista en el 2005.
Cuando abandonó su país natal dejó atrás un proyecto de dos edificios de 50 pisos, uno sostenido en cuatro columnas, técnica que llamó “mega estructura”.
Nunca regresó a la isla. En la entrevista de 2005 declaró: “Asumiendo que las cosas volvieran a un ritmo normal, democrático, yo iría a Cuba aunque sea a hacer una chocita”.
Algunos de los edificios cuyas estructuras diseñó Seinuk
Seinuk, el cubano que hacía rascacielos
Entre las estructuras en Dubai, el O-14 es único. Su principal característica arquitectónica y sistema estructural es su cubierta exterior, una pared con más de 1.300 aperturas de diferentes tamaños, dispuestas en un patrón aparentemente aleatorio que a la vez protege del sol. La disposición aparentemente arbitraria de las aberturas en la pared crea una rejilla diagonal que permite su uso como un sistema de gravedad y apoyo lateral. La torre es una estructura de concreto de 22 pisos de altura con cuatro niveles de estacionamiento subterráneo.

Seinuk, el cubano que hacía rascacielos
El edificio del Museum of the Jewish Heritage en Nueva York es una estructura de marco de acero de la más alta calidad del diseño arquitectónico, que incorpora  amplios espacios de exhibición sin columnas. El proyecto incluyó el análisis de la vulnerabilidad explosión y diseño resistente a explosiones en caso de un atentado terrorista.
X.MA1.1406134681@aol.com
Edificio de 34 pisos en el 885 3ra Ave. entre 53 y 54 St. del Este de Manhattan, NY. Conocido como el Edificio Lápiz Labial, o Lipstick Building. Fecha: 1986. Estilo: Post Modernismo.
 

X.MA2.1406134681@aol.com 
El Lipstick Building
 X.MA4.1406134681@aol.com 
Trump World Tower
El ingeniero que diseñó las Torres Trump, el Lápiz Labial de Philip Johnson, el Centro Time Warner, el Trump World Tower (considerado como el edificio de apartamentos mas alto del hemisferio) y laTorre Angular Hearst, de Norman Foster (en construccion), el cubano judío Ysrael A. Seinuk, falleció en Nueva York tras forjar una carrera de fundación para los grandes proyectos constructivos modernos.
Entre sus obras más conocidas tambien están el 4 Times Square y el Museum of the Jewish Heritage (que es una estructura de marco de acero de la más alta calidad del diseño arquitectónico, que incorpora amplios espacios de exhibición sin columnas. El proyecto incluyó el análisis de la vulnerabilidad explosión y diseño resistente a explosiones en caso de un atentado terrorista).
X.MA5.1406134681@aol.com
Edificio 4 Time Square

X.MA7.1406134681@aol.com
Estacion Central de NY

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lunes, junio 23, 2014

Russian pizza chain starts pizza deliveries by drone

ITN


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sábado, mayo 17, 2014

Airborne wind turbines: Meet the BAT


Read at CNN.com >>
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miércoles, mayo 14, 2014

3-D Printed Hand Lets Haitian Boy Play Catch for First Time

NBC News.com
A 12-year-old boy born without fingers has become Haiti's first recipient of a 3-D printed prosthesis, enabling him to play catch with his friends for the first time.
Stevenson Joseph, who has lived at an orphanage since he was abandoned at the age of 3, had little hope of treatment in a country where programs for the disabled are rare.
But after he met John Marshall, a software engineer on a mission trip to Haiti for Florida-based Food for the Poor, his prospects changed. After months of work to perfect the design, a 3-D prosthesis was fitted to his left hand last month.
"It is a great hand," Stevenson says, ticking off his list of accomplishments. "Now I can take a balloon with it. I can score at basketball. I can hold a TV remote and push my friends on their wheelchairs. I can hold a water bottle, a bag. I like it a lot."
Image: Stevenson Joseph learns to use a 3-D-printed prosthetic hand in Santo 
 MARIE ARAGO / Reuters
Stevenson Joseph practices opening a door using his 3-D printed prosthetic hand at the orphanage where he lives in Santo, Haiti, on April 28, 2014.

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Google shows off its driverless cars in California

ITN


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sábado, mayo 10, 2014

China Plans Beijing-United States High-Speed Rail Line

Chinese experts are studying and considering plans to build a high-speed rail line that stretches from China to the United States.

If constructed, the project, titled the “China-Russia-Canada-America” line, would stretch out to cover over 8,000 miles of land.
China’s Beijing Times newspaper reported the line would start in China, continue into Siberia, then pass through an extensive, 125-mile tunnel underneath the Pacific Ocean, then run through Alaska and Canada to finally reach destinations within the continental United States. The total expected trip time is two days (36 hours) with the train traveling at an average speed of 220 miles per hour.
Some skeptics have doubted the plausibility of the high-speed rail plan. If constructed, the Bering strait tunnel would have to be by far the longest underwater tunnel on earth.
Others had concerns revolving around the financial aspect of the project. "China's railway sector is still being haunted by deep debts. Therefore, even with the government's support, it must persuade banks to lend a colossal amount of money," said an expert at Beijing Jiaotong University.
The report does not mention whether Canada or the United States were consulted in developing plans for the project.
The China-United States rail line is one of four proposed plans to expand China’s high-speed rail coverage.
The Eurasia Line would cover London, Paris, Berlin, Warsaw, Kiev, Moscow, Kazakhstan, Khabarovsk(Russia), and would end in Manzhouli (China).
The proposed Central Line would have stops in Urumqi (China), Kazakhstan, Uzbekistan, Turkmenistan, Iran, Turkey, Germany, and “other countries.”
The Pan-Asian Line would canvas Kunming (China), Vietnam, Cambodia, Thailand, Malaysia, and Singapore. A Chinese official said the Pan-Asian line’s construction will start next month.
China has completed roughly 6,200 miles (10,000 km) of its own high-speed rail network, with plans to expand it to roughly 11,000 miles (19,000 km) by 2015.

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jueves, abril 24, 2014

This machine makes drinking water from thin air

Tel Aviv, Israel (CNN) -- Water. A vital nutrient, yet one that is inaccessible to many worldwide.
The World Health Organization reports that 780 million people don't have access to clean water, and 3.4 million die each year due to water-borne diseases. But an Israeli company thinks it can play a part in alleviating the crisis by producing drinking water from thin air.
Water-Gen has developed an Atmospheric Water-Generation Units using its "GENius" heat exchanger to chill air and condense water vapor.
"The clean air enters our GENius heat exchanger system where it is dehumidified, the water is removed from the air and collected in a collection tank inside the unit," says co-CEO Arye Kohavi.
"From there the water is passed through an extensive water filtration system which cleans it from possible chemical and microbiological contaminations," he explains. "The clean purified water is stored in an internal water tank which is kept continuously preserved to keep it at high quality over time."
Several companies tried to extract water from the air ... But the issue is to do it very efficiently.
Arye Kohavi, co-CEO Water-Genius
Energy efficient
Capturing atmospheric humidity isn't a ground-breaking invention in itself -- other companies already sell atmospheric water generators for commercial and domestic use -- but Water-Gen says it has made its water generator more energy efficient than others by using the cooled air created by the unit to chill incoming air.
"Several companies tried to extract water from the air," says Kohavi. "It looks simple, because air conditioning is extracting water from air. But the issue is to do it very efficiently, to produce as much water as you can per kilowatt of power consumed."
He adds: "When you're very, very efficient, it brings us to the point that it is a real solution. Water from air became actually a solution for drinking water."
The system produces 250-800 liters (65-210 gallons) of potable water a day depending on temperature and humidity conditions and Kohavi says it uses two cents' worth of electricity to produce a liter of water.
Civilian uses
Developed primarily for the Israel Defense Forces (IDF), Water-Gen says it has already sold units to militaries in seven countries, but Kohavi is keen to stress that the general population can also benefit from the technology.
He explains: "We believe that the products can be sold to developing countries in different civilian applications. For example in India, [drinking] water for homes is not available and will also be rare in the future. The Atmospheric Water-Generation Unit can be built as a residential unit and serve as a perfect water supply solution for homes in India."
Kohavi says Water-Gen's units can produce a liter of water for 1.5 Rupees, as opposed to 15 Rupees for a liter of bottled water.
Dirty water
Another product Water-Gen has developed is a portable water purification system. It's a battery-operated water filtration unit called Spring. Spring is able to filter 180 liters (48 gallons) of water, and fits into a backpack -- enabling water filtration on the go.
"You can go to any lake, any place, any river, anything in the field, usually contaminated with industrial waste, or anything like that and actually filter it into the best drinking water that exists," says Kohavi.
This unit gives logistic independence for the forces and make us ensure that we provide the soldiers high quality water.
Major Alisa Zevin, head of the Facilities and Specialized Equipment, IDF
Major Alisa Zevin, head of the Facilities and Specialized Equipment Section for the IDF, says the unit is revolutionary for them.
"This unit gives logistic independence for the forces and make us ensure that we provide the soldiers high quality water," she says.
In 2013, the IDF took Spring to the Philippines after Typhoon Haiyan devastated the island country and left 4.2 million people affected by water scarcity. The system filtered what was undrinkable water into potable water, and that is what Water-Gen hopes to accomplish elsewhere where the technology is needed.
"It's something as a Westerner you cannot understand because you have a perfect water in the pipe, but people are dying from lack of water," says Kohavi.
Although Water-Gen's developments aren't a solution for the water crisis, Kohavi believes that the technology can do for countries that lack clean water, such as Haiti, what it has done for the Philippines. It can be the technology used to not only to filter water, but to save lives.
"They could actually bring solution, perfect solution, to the people over there," says Kohavi. "For the kids ... They can use the technology to filter water in the field. People are going days just to carry water. And all our solutions can be an alternative for that."

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miércoles, abril 16, 2014

Glow-in-the-dark highway a bright idea

On a 500 metre stretch of highway in the Netherlands, streetlights have been replaced with glow-in-the-dark paint.

The glow-in-the-dark markings are created by mixing a photo-luminescent powder into the road paint.  The paint charges by absorbing daylight, and stays lit for about eight hours during the night.

As the inventor Dan Roosegaarde explains to Wired UK, "It's like the glow in the dark paint you and I had when we were children, but we teamed up with a paint manufacturer and pushed the development. Now, it's almost radioactive."

The paint was developed in conjunction with Heijmans, a road construction company. Specifically, the luminous road is found on the N329 highway in the city of Oss.

Should this test project prove successful, imagine the savings this could net for a city, using this paint as opposed to installing, powering, and maintaining those massive lights that run along most highways.

Whether that will happen depends on the proverbial government red tape, which proved to be the largest obstacle to the studio seeing its invention come to life. In fact, the studio said that despite being ready for a while, the project was held up because of a delay in a licences application approval from the local government.

Mr. Roosegaarde envisions future uses for the paint, such as when outside temperatures reach a certain low point, snowflake symbols would appear on the road, reminding drivers that the road is slippery.

Until then, the paint is currently being tested to determine wear and tear, as well as effectiveness.

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jueves, abril 10, 2014

Invisible Car Technology: Land Rover reveals 'see-through' car bonnet

ITN

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martes, abril 08, 2014

Introducing the Desktop 3D Printer

The 3D printing revolution could be coming to your home with a new machine that costs less than an iPhone and can sit on your desktop.

MD3 is a company trying to produce an affordable 3D printing device and has set up a Kickstarter page in hopes that it can raise enough money to bring The Micro 3D printing machine to customers' homes.
The novelty machine is intended for beginners in 3D printing and can only "print" items that stand a few inches tall, but MD3 hopes that the affordable printer can bring the concept of 3D printing to the average consumer in order to get more people interested in the concept of home manufacturing.
Micro 3D weighs 2.2 lbs and prints objects up 4.6-inches tall, the company says.
The machine will be able to print in plastics and will be able to make toys, key chains, jewelry, and can even print with food stuffs such as chocolate.
MD3 says that their printer is plug and play and easy to use with open source software.
"At M3D we knew at some point in the future these tools would be a part of everyone’s lives, so we asked why not now?" said the company's founder Michael Armani.
"In order for [3D printers] to live up their potential, they need to be affordable and completely effortless to use," Armani said.
The Kickstarter campaign is scheduled to end on May 7 and has already raised $250,000.

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sábado, abril 05, 2014

The next frontier in 3-D printing: Human organs

CNN.com

The emerging process of 3-D printing, which uses computer-created digital models to create real-world objects, has produced everything from toys to jewelry to food.
Soon, however, 3-D printers may be spitting out something far more complex, and controversial: human organs.
For years now, medical researchers have been reproducing human cells in laboratories by hand to create blood vessels, urine tubes, skin tissue and other living body parts. But engineering full organs, with their complicated cell structures, is much more difficult.
Enter 3-D printers, which because of their precise process can reproduce the vascular systems required to make organs viable. Scientists are already using the machines to print tiny strips of organ tissue. And while printing whole human organs for surgical transplants is still years away, the technology is rapidly developing.
"The mechanical process isn't all that complicated. The tricky part is the materials, which are biological in nature," said Mike Titsch, editor-in-chief of 3D Printer World, which covers the industry. "It isn't like 3-D printing plastic or metal. Plastic doesn't die if you leave it sitting on an open-air shelf at room temperature for too long."
Lawrence Bonassar, a professor of biomedical engineering at Cornell University, with an artificial ear made via 3-D printing and injectable molds.
Lawrence Bonassar, a professor of biomedical engineering at Cornell University, with an artificial ear made via 3-D printing and injectable molds.
The idea of printing a human kidney or liver in a lab may seem incomprehensible, even creepy. But to many scientists in the field, bioprinting holds great promise. Authentic printed organs could be used for drug or vaccine testing, freeing researchers from less accurate methods such as tests on animals or on synthetic models.
Then there's the hope that 3-D printers could someday produce much-needed organs for transplants. Americans are living longer, and as we get deeper into old age our organs are failing more. Some 18 people die in the United States each day waiting in vain for transplants because of a shortage of donated organs -- a problem that Anthony Atala, director of the Wake Forest Institute for Regenerative Medicine and a pioneer in bioprinting, calls "a major health crisis."
An 'exciting new area of medicine'
Bioprinting works like this: Scientists harvest human cells from biopsies or stem cells, then allow them to multiply in a petri dish. The resulting mixture, a sort of biological ink, is fed into a 3-D printer, which is programmed to arrange different cell types, along with other materials, into a precise three-dimensional shape. Doctors hope that when placed in the body, these 3-D-printed cells will integrate with existing tissues.
The process already is seeing some success. Last year a 2-year-old girl in Illinois, born without a trachea, received a windpipe built with her own stem cells. The U.S. government has funded a university-led "body on a chip" project that prints tissue samples that mimic the functions of the heart, liver, lungs and other organs. The samples are placed on a microchip and connected with a blood substitute to keep the cells alive, allowing doctors to test specific treatments and monitor their effectiveness.
"This is an exciting new area of medicine. It has the potential for being a very important breakthrough," said Dr. Jorge Rakela, a gastroenterologist at the Mayo Clinic in Phoenix and a member of the American Liver Foundation's medical advisory committee.
One of Organovo\'s engineers oversees the construction of a vascular tissue construct on a NovoGen MMX bioprinter.
One of Organovo's engineers oversees the construction of a vascular tissue construct on a NovoGen MMX bioprinter.
"Three-D printing allows you to be closer to what is happening in real life, where you have multiple layers of cells," he said. With current 2-D models, "if you grow more than one or two layers, the cells at the bottom suffocate from lack of oxygen."
To accelerate the development of bioprinted organs, a Virginia foundation that supports regenerative medicine research announced in December it will award a $1 million prize for the first organization to print a fully functioning liver.
One early contender for the prize is Organovo, a California start-up that has been a leader in bioprinting human body parts for commercial purposes. Using cells from donated tissue or stem cells, Organovo is developing what it hopes will be authentic models of human organs, primarily livers, for drug testing.
The company has printed strips of human liver tissue in its labs, although they are still very small: four by four by one millimeter, or about one-fourth the size of a dime. Each strip takes about 45 minutes to print, and it takes another two days for the cells to grow and mature, said Organovo CEO Keith Murphy. The models can then survive for about 40 days.
Organovo has also built models of human kidneys, bone, cartilage, muscle, blood vessels and lung tissue, he said.
"Basically what it allows you to do is build tissue the way you assemble something with Legos," Murphy said. "So you can put the right cells in the right places. You can't just pour them into a mold."
Ethical concerns
Not everyone is comfortable with this bold new future of lab-built body parts, however.
A research director at Gartner Inc., the information-technology research and advisory firm, believes 3-D bioprinting is advancing so quickly that it will spark a major ethical debate by 2016.
A 3-D printer at Cornell University produces an artificial ear.
A 3-D printer at Cornell University produces an artificial ear.
"Three-D bioprinting facilities with the ability to print human organs and tissue will advance far faster than general understanding and acceptance of the ramifications of this technology," Pete Basiliere said in a recent report.
"These initiatives are well-intentioned, but raise a number of questions that remain unanswered," Basiliere added. "What happens when complex 'enhanced' organs involving nonhuman cells are made? Who will control the ability to produce them? Who will ensure the quality of the resulting organs?"
Bioprinted organs are also likely to be expensive, which could put them out of reach of all but the wealthiest patients.
Murphy said Organovo only uses human cells in creating tissues, and doesn't see any ethical problems with what his company is doing.
"People used to worry about doing research on cadavers ... and that dissipated very quickly," he said. "We don't think there's any controversy if you're producing good data and helping people with health conditions."
Most experts, including Wake Forest's Atala, don't think we'll see complex 3-D-printed organs, suitable for transplants, for years if not decades. Instead, they believe the next step will be printing strips of tissue, or patches, that could be used to repair livers and other damaged organs.
Organovo\'s NovoGen MMX bioprinter is small enough to fit into a cabinet.
Organovo's NovoGen MMX bioprinter is small enough to fit into a cabinet.
"We are very eager to put pieces of tissue to work for surgical transplants," said Organovo's Murphy, who hopes his company will be ready to begin clinical trials within five years.
Of course, any use of 3-D-printed tissue in surgical procedures would require approval by the U.S. Food and Drug Administration. That review process could take up to a decade.
By then, the notion of a surgeon putting a 3-D-printed kidney into a patient may not seem so bizarre. Then again, this swiftly evolving technology may create new moral conundrums.
"The ethical questions are bound to be the same concerns we have seen in the past. Many major medical breakthroughs have suffered moral resistance, from organ transplants to stem cells," said Titsch of 3D Printer World.
"Will only the rich be able to afford it? Are we playing God? In the end, saving lives tends to trump all objections."

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domingo, marzo 23, 2014

Sex robots: Robotic strippers and red-light districts of the future.

slate

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viernes, marzo 21, 2014

Hilarious bus stop prank: Public see giant robots and alien invasion

ITN

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lunes, marzo 10, 2014

The future of solar power

The Economist

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miércoles, marzo 05, 2014

John H. Conway hablando del Juego de la vida

Emue 
No es la primera vez que mencionamos por aquí el Juego de la vida de John Horton Conway, pero en esta ocasión el vídeo bien lo merece pues es el propio creador quien lo describe con sus propias palabras; algo así como si bajara Dios a explicar cómo «funcionan» los diez mandamientos (los «de verdad»). En este caso, dibujando una cuadrícula infinita y utilizando pistachos y un lenguaje muy divulgativo enseña cómo se puede seguir la pista de las diferentes celdas y cada tic, tac del «reloj cósmico» que hace evolucionar a estos autómatas celulares.
Resulta interesante también ver cómo Conway, de 76 años, mantiene aún hoy en día una relación de amor/odio con su creación. En su momento no le dio demasiada importancia; supuso que era un mero entretenimiento curioso. Pero con el paso del tiempo y la ayuda de los microordenadores de la época se convirtió en una gran herramienta para estudiar los autómatas celulares, las matemáticas y lógica que lo rodean.
En cierto modo, el Juego de la vida eclipsó otros trabajos de Conway que él considera más profundos y meritorios. Sabemos de ellos porque Martin Gardner siempre le trató estupendamente en sus columnas y libros; tiene publicados números trabajos y libros sobre geometría, combinatoria, topología… Pero su nombre probablemente pasará a la historia ligado indefectiblemente a ese pequeño jueguecito que tanta gente conoce.
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Metrópolis II, la película (Arte y Diseño)

La gente de Supermarché preparó hace tiempo una minipelícula titulada Metrópolis II dedicada al proyecto del mismo nombre que creó Chris Burden y del que ya hablamos por aquí hace un par de años.
El hipnótico y relajante montaje está compuesto en total de 18 carriles para coches, 1.000 cochecitos Hot Wheels, 13 vías de tren y decenas de edificios LEGO. Se necesitaron tres meses para moverlo de la impresionante nave en que se construyó –atención a la última escena– hasta el Museo de Arte de Los Ángeles, donde ahora está expuesto.

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viernes, febrero 14, 2014

World's First 3-D Printed Bike Frame Weighs Just 3 Pounds

NBC News.com
Renishaw
 
It's a first: a bike frame created entirely via 3-D printing. Empire's prototype, on display at the London Bike Show, is solid (or rather hollow) titanium, and weighs just 1,400 grams — around 3 pounds.
Naturally, things like the tires, seat and chain can't be 3-D printed, but printing the entire frame is a big step. It's not printed out whole, though: The parts are made clustered together in a block by melting titanium dust with a laser, then bonded together.
Renishaw
The parts are printed together in a block, separated, then assembled and permanently bonded.
  Empire teamed up with additive manufacturing company Renishaw, and it took them about six months to produce the bike. Other companies have produced 3-D printed parts, but this is the first frame that's entirely made by this method.
Is it actually practical, though? It's just as strong as the Empire frame it's based on and quite a bit lighter, but the process doesn't exactly lend itself to mass manufacture.
So chances are if you buy a 3-D printed frame any time soon, it'll be a custom job and quite expensive. But a few years down the line, this may be both common and affordable.

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sábado, febrero 08, 2014

Bodily maps of emotions

Bodily topography of basic (Upper) and nonbasic (Lower) emotions associated with words. The body maps show regions whose activation increased (warm colors) or decreased (cool colors) when feeling each emotion. (Credit: Lauri Nummenmaa et al./PNAS)
Read on KurzweilAI >>
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Quantum engineers make a major step towards a scalable quantum computer

Quantum interference on a chip
Photonic quantum computer: two spontaneous photon-pair source are integrated within a tuneable Mach-Zehnder interferometer. The system is capable of generating and manipulating path-entangled two-photon states (credit: J. W. Silverstone et al./Nature Photonics)
Scientists and engineers from an international collaboration led by Mark Thompson from the University of Bristol have, for the first time, generated and manipulated single photons on a silicon chip — a major step forward in the race to build a quantum computer, achieved by shrinking down key components and integrating them onto a silicon microchip, according to the researchers.
Previous attempts have required external light sources to generate the photons; this new chip integrates components that can generate photons inside the chip.
Potential for scaling
“We were surprised by how well the integrated sources performed together,” admits Joshua Silverstone, lead author of the paper. “They produced high-quality identical photons in a reproducible way, confirming that we could one day manufacture a silicon chip with hundreds of similar sources on it, all working together. This could eventually lead to an optical quantum computer capable of performing enormously complex calculations.”
“Single-photon detectors, sources and circuits have all been developed separately in silicon but putting them all together and integrating them on a chip is a huge challenge,” said Thompson.
“Our device is the most functionally complex photonic quantum circuit to date, and was fabricated by Toshiba using exactly the same manufacturing techniques used to make conventional electronic devices. We can generate and manipulate quantum entanglement all within a single millimeter-sized microchip.”
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The group, which, includes researchers from Toshiba Corporation (Japan), Stanford University (US), University of Glasgow (UK) and TU Delft (The Netherlands), now plans to integrate the remaining necessary components onto a chip, and show that large-scale quantum devices using photons are possible.
“Our group has been making steady progress towards a functioning quantum computer over the last five years,” said Thompson. “We hope to have within the next couple of years, photon-based devices complex enough to rival modern computing hardware for highly-specialized tasks.”
Bristol’s newly established Centre for Doctoral Training in Quantum Engineering will train a new generation of engineers, scientists, and entrepreneurs to harness the power of quantum mechanics and lead the quantum technology revolution. This innovative center bridges the gaps between physics, engineering, mathematics and computer science, working closely with chemists and biologists while interacting strongly with industry.

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"Hablame"

"EN TIEMPOS DIFÍCILES" - Heberto Padilla

A aquel hombre le pidieron su tiempo

para que lo juntara al tiempo de la Historia.

Le pidieron las manos,

porque para una época difícil

nada hay mejor que un par de buenas manos.

Le pidieron los ojos

que alguna vez tuvieron lágrimas

para que contemplara el lado claro

(especialmente el lado claro de la vida)

porque para el horror basta un ojo de asombro.

Le pidieron sus labios

resecos y cuarteados para afirmar,

para erigir, con cada afirmación, un sueño

(el-alto-sueño);

le pidieron las piernas

duras y nudosas

(sus viejas piernas andariegas),

porque en tiempos difíciles

¿algo hay mejor que un par de piernas

para la construcción o la trinchera?

Le pidieron el bosque que lo nutrió de niño,

con su árbol obediente.

Le pidieron el pecho, el corazón, los hombros.

Le dijeron

que eso era estrictamente necesario.

Le explicaron después

que toda esta donación resultaria inútil.

sin entregar la lengua,

porque en tiempos difíciles

nada es tan útil para atajar el odio o la mentira.

Y finalmente le rogaron

que, por favor, echase a andar,

porque en tiempos difíciles

esta es, sin duda, la prueba decisiva.

Los Aldeanos: "El Socialismo en Tiempos del Colera: Toda Una Nación"

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La columna de Cubanalisis

NEOCASTRISMO [Hacer click en la imagen]

NEOCASTRISMO [Hacer click en la imagen]
¨Saturno jugando con sus hijos¨/ Pedro Pablo Oliva

Seguidores

Carta desde la carcel de Fidel Castro Ruz

“…después de todo, para mí la cárcel es un buen descanso, que sólo tiene de malo el que es obligatorio. Leo mucho y estudio mucho. Parece increíble, las horas pasan como si fuesen minutos y yo, que soy de temperamento intranquilo, me paso el día leyendo, apenas sin moverme para nada. La correspondencia llega normalmente…”

“…Como soy cocinero, de vez en cuando me entretengo preparando algún pisto. Hace poco me mandó mi hermana desde Oriente un pequeño jamón y preparé un bisté con jalea de guayaba. También preparo spaghettis de vez en cuando, de distintas formas, inventadas todas por mí; o bien tortilla de queso. ¡Ah! ¡Qué bien me quedan! por supuesto, que el repertorio no se queda ahí. Cuelo también café que me queda muy sabroso”.
“…En cuanto a fumar, en estos días pasados he estado rico: una caja de tabacos H. Upman del doctor Miró Cardona, dos cajas muy buenas de mi hermano Ramón….”.
“Me voy a cenar: spaghettis con calamares, bombones italianos de postre, café acabadito de colar y después un H. Upman #4. ¿No me envidias?”.
“…Me cuidan, me cuidan un poquito entre todos. No le hacen caso a uno, siempre estoy peleando para que no me manden nada. Cuando cojo el sol por la mañana en shorts y siento el aire de mar, me parece que estoy en una playa… ¡Me van a hacer creer que estoy de vacaciones! ¿Qué diría Carlos Marx de semejantes revolucionarios?”.
¨La patria es dicha de todos, y dolor de todos, y cielo para todos, y no feudo ni capellaní­a de nadie¨ - Marti

"No temas ni a la prision, ni a la pobreza, ni a la muerte. Teme al miedo"
-
Giacomo Leopardi

¨Por eso es muy importante, Vicky, hijo mío, que recuerdes siempre para qué sirve la cabeza: para atravesar paredes¨Halvar de Flake [El vikingo]

"Como no me he preocupado de nacer, no me preocupo de morir" - Lorca

"Al final, no os preguntarán qué habéis sabido, sino qué habéis hecho" - Jean de Gerson

"Si queremos que todo siga como está, es necesario que todo cambie" - Giuseppe Tomasi di Lampedusa

"Todo hombre paga su grandeza con muchas pequeñeces, su victoria con muchas derrotas, su riqueza con múltiples quiebras" - Giovanni Papini


"Life is what happens while you are busy making other plans" - John Lennon

"Habla bajo, lleva siempre un gran palo y llegarás lejos" - Proverbio Africano

"No hay medicina para el miedo" - Proverbio escoces

"El supremo arte de la guerra es doblegar al enemigo sin luchar"
- Sun Tzu

"You do not really understand something unless you can explain it to your grandmother" - Albert Einstein

"It is inaccurate to say I hate everything. I am strongly in favor of common sense, common honesty, and common decency. This makes me forever ineligible for public office" - H. L. Menken

"I swore never to be silent whenever and wherever human beings endure suffering and humiliation. We must always take sides. Neutrality helps the oppressor, never the victim. Silence encourages the tormentor, never the tormented" - Elie Wiesel

"Stay hungry, stay foolish" -
Steve Jobs

"If you put the federal government in charge of the Sahara Desert , in five years ther'ed be a shortage of sand" - Milton Friedman

"The tragedy of modern man is not that he knows less and less about the meaning of his own life, but that it bothers him less and less" - Vaclav Havel

"No se puede controlar el resultado, pero si lo que uno haga para alcanzarlo" -
Vitor Belfort [MMA Fighter]

Liborio

Liborio
A la puerta de la gloria está San Pedro sentado y ve llegar a su lado a un hombre de cierta historia. No consigue hacer memoria y le pregunta con celo: ¿Quién eras allá en el suelo? Era Liborio mi nombre. Has sufrido mucho, hombre, entra, te has ganado el cielo.

Para Raul Castro

Cuba ocupa el penultimo lugar en el mundo en libertad economica solo superada por Corea del Norte.

Cuba ocupa el lugar 147 entre 153 paises evaluados en "Democracia, Mercado y Transparencia 2007"

Cuando vinieron

Cuando vinieron a buscar a los comunistas, Callé: yo no soy comunista.
Cuando vinieron a buscar a los sindicalistas, Callé: yo no soy sindicalista.
Cuando vinieron a buscar a los judíos, Callé: yo no soy judío. Cuando vinieron a buscar a los católicos, Callé: yo no soy “tan católico”.
Cuando vinieron a buscarme a mí, Callé: no había quien me escuchara.

Reverendo Martin Niemöller

Martha Colmenares

Martha Colmenares
Un sitio donde los hechos y sus huellas nos conmueven o cautivan

CUBA LLORA Y EL MUNDO Y NOSOTROS NO ESCUCHAMOS

Donde esta el Mundo, donde los Democratas, donde los Liberales? El pueblo de Cuba llora y nadie escucha.
Donde estan los Green, los Socialdemocratas, los Ricos y los Pobres, los Con Voz y Sin Voz? Cuba llora y nadie escucha.
Donde estan el Jet Set, los Reyes y Principes, Patricios y Plebeyos? Cuba desesperada clama por solidaridad.
Donde Bob Dylan, donde Martin Luther King, donde Hollywood y sus estrellas? Donde la Middle Class democrata y conservadora, o acaso tambien liberal a ratos? Y Gandhi? Y el Dios de Todos?
Donde los Santos y Virgenes; los Dioses de Cristianos, Protestantes, Musulmanes, Budistas, Testigos de Jehova y Adventistas del Septimo Dia. Donde estan Ochun y todas las deidades del Panteon Yoruba que no acuden a nuestro llanto? Donde Juan Pablo II que no exige mas que Cuba se abra al Mundo y que el Mundo se abra a Cuba?
Que hacen ahora mismo Alberto de Monaco y el Principe Felipe que no los escuchamos? Donde Madonna, donde Angelina Jolie y sus adoptados around de world; o nos hara falta un Brando erguido en un Oscar por Cuba? Donde Sean Penn?
Donde esta la Aristocracia Obrera y los Obreros menos Aristocraticos, donde los Working Class que no estan junto a un pueblo que lanquidece, sufre y llora por la ignominia?
Que hacen ahora mismo Zapatero y Rajoy que no los escuchamos, y Harper y Dion, e Hillary y Obama; donde McCain que no los escuchamos? Y los muertos? Y los que estan muriendo? Y los que van a morir? Y los que se lanzan desesperados al mar?
Donde estan el minero cantabrico o el pescador de percebes gijonese? Los Canarios donde estan? A los africanos no los oimos, y a los australianos con su acento de hombres duros tampoco. Y aquellos chinos milenarios de Canton que fundaron raices eternas en la Isla? Y que de la Queen Elizabeth y los Lords y Gentlemen? Que hace ahora mismo el combativo Principe Harry que no lo escuchamos?
Donde los Rockefellers? Donde los Duponts? Donde Kate Moss? Donde el Presidente de la ONU? Y Solana donde esta? Y los Generales y Doctores? Y los Lam y los Fabelo, y los Sivio y los Fito Paez?
Y que de Canseco y Miñoso? Y de los veteranos de Bahia de Cochinos y de los balseros y de los recien llegados? Y Carlos Otero y Susana Perez? Y el Bola, y Pancho Cespedes? Y YO y TU?
Y todos nosotros que estamos aqui y alla rumiando frustaciones y resquemores, envidias y sinsabores; autoelogios y nostalgias, en tanto Louis Michel comulga con Perez Roque mientras Biscet y una NACION lanquidecen?
Donde Maceo, donde Marti; donde aquel Villena con su carga para matar bribones?
Cuba llora y clama y el Mundo NO ESCUCHA!!!

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