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  • Sobre la teoría de la relatividad especial y general - Albert Einstein August 17, 2017
    Entre el Electromagnetismo y la Mecánica newtoniana existe una fórmula de bisagra: la teoría de la relatividad especial y general. La importancia del nuevo marco planteado por Albert Einstein se entiende por lo siguiente: la percepción del tiempo y el espacio es relativa al observador. ¿Qué significa esto? Si usted viaja a una velocidad mayor que la de la lu […]
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  • Una mochila para el universo - Elsa Punset August 17, 2017
    ¿Cuánto debe durar un abrazo? ¿De qué sirve llorar? ¿Qué podemos hacer para cambiar nuestra suerte? ¿Tiene algún propósito el enamoramiento? ¿Y por qué es tan inevitable el desamor? ¿Cómo aprendemosa tener miedo? ¿A partir de qué edad empezamos a mentir? ¿Por qué sentimos envidia? ¿Cuántos amigos necesitamos para ser felices? ¿Podemos evitar estresarnos sin […]
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  • Física General Esencial - Agustín Vázquez Sánchez August 17, 2017
    La nueva edición del ebook contiene ahora ocho temas completos de física y una sección de prácticas para realizar en casa. Se han corregido errores y agregado más ejemplos y ejercicios además de recursos multimedia en todos los capítulos.  Los ejemplos resueltos se presentan paso a paso a través de una solución algebraica con lo cual se evitan errores n […]
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  • El cisne negro. Nueva edición ampliada y revisada - Nassim Nicholas Taleb August 17, 2017
    ¿Qué es un cisne negro? Para empezar, es un suceso improbable, sus consecuencias son importantes y todas las explicaciones que se puedan ofrecer a posteriori no tienen en cuenta el azar y sólo buscan encajar lo imprevisible en un modelo perfecto. El éxito de Google y You Tube, y hasta ell 11-S, son “cisnes negros”. Para Nassim Nicholas Taleb, los cisnes negr […]
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  • La teoría del todo - Stephen W. Hawking August 17, 2017
    Una manera clara y amena de acercarse a los misterios del universo. En esta esclarecedora obra, el gran físico británico Stephen Hawking nos ofrece una historia del universo, del big bang a los agujeros negros. En siete pasos, Hawking logra explicar la historia del universo, desde las primeras teorías del mundo griego y de la época medieval hasta las más com […]
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  • Ágilmente - Estanislao Bachrach August 17, 2017
    Bachrach es Doctor en biología molecular y explica el funcionamiento del cerebro. A través de ello, da consejos y herramientas para ser más creativos y felices en el trabajo y en la vida. La neurociencia es clara: el cerebro aprende hasta el último día de vida. La creatividad puede expandirse. Tu mente, mediante la aplicación de las técnicas correctas, puede […]
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  • El gran diseño - Stephen Hawking & Leonard Mlodinow August 17, 2017
    Aun antes de aparecer, este libro ha venido precedido, en todos los medios de comunicación, de una extraordinaria polémica sobre  sus conclusiones: que tanto nuestro universo como los otros muchos universos posibles surgieron de la nada, porque su creación no requiere de la intervención de ningún Dios o ser sobrenatural, sino que todos los universos pro […]
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  • Breve historia de mi vida - Stephen Hawking August 17, 2017
    La mente maravillosa de Stephen Hawking ha deslumbrado al mundo entero revelando los misterios del universo. Ahora, por primera vez, el cosmólogo más brillante de nuestra era explora, con una mirada reveladora, su propia vida y evolución intelectual. Breve historia de mi vida cuenta el sorprendente viaje de Stephen Hawking desde su niñez […]
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  • La física del futuro - Michio Kaku August 17, 2017
    Un recorrido asombroso a través de los próximos cien años de revolución científica. El futuro ya se está inventando en los laboratorios de los científicos más punteros de todo el mundo. Con toda probabilidad, en 2100 controlaremos los ordenadores a través de diminutos sensores cerebrales y podremos mover objetos con el poder de nuestras mentes, la inteligenc […]
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  • Tricks Any Dog Can Do! - Susan Day August 17, 2017
    This great book comes with advice and guidance as to the best way to teach these tricks. It offers more than one method which the reader can choose depending upon their own situation. There is also advice to using treats and shows you how to not end up with a treat junkie! This books is from the desk of Susan Day, a canine behaviourist. Susan teaches obedien […]
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Affirmative Action Policies Evolve, Achieving Their Own Diversity

“The reason a liberal like me is intrigued by Trump’s actions on affirmative action is that I think it could have the effect of driving universities to really pursuing socioeconomic diversity as a way of indirectly creating racial diversity,” said Richard D. Kahlenberg, a senior fellow at the Century Foundation who has pushed for class-based admissions to replace race-based admissions.Public universities in California and Washington, forbidden by state law from considering race in individual admissions decisions, have attempted to use socioeconomic factors as a substitute, hoping to draw from the overlap of minority and low-income students. Others, like the University of Texas, accept a set percentage of the top students at every state high school. Neither method has fully succeeded in composing student bodies that match the racial makeup of their states.Other colleges with more freedom to curate a student body continue to weigh race as one factor in admissions, which can lead to more diversity. But their decision-making can be so subjective that, in the minds of high school seniors staring down application season, it can border on the occult.It is this opacity that has left few happy: not Asian-American students who feel that they are being held to a higher standard, and whose complaint against Harvard has become a focus of the Justice Department’s efforts; not white students who feel similarly penalized; and not those who remain the theoretical face of affirmative action, African-American and Latino applicants who say the assumption that their success depended on their race can shadow them far beyond commencement.“When I told people I was going to Princeton, it was not uncommon for me to hear: ‘Oh, you’re going to Princeton because you are black,’” said Jonathan Haynes, a sophomore from Midland, Mich., where just 2 percent of the population is black […]

Asia and Australia Edition: O. J. Simpson, John McCain, Ram Nath Kovind: Your Friday Briefing

#briefing-market-module.interactive-embedded .interactive-caption { display: none; } Market Snapshot View Full Overview In the News Photo Credit European Pressphoto Agency • India elected Ram Nath Kovind, a 71-year-old Dalit, as president — a move seen by some as Prime Minister Narendra Modi’s effort to expand his power base. [The New York Times] • O. J. Simpson will be released on parole as soon as Oct. 1. The American football legend and actor will go free after serving nine years in a Nevada prison for armed robbery. [The New York Times] Continue reading the main story • Malaysia banned the global hit, “Despacito,” from state broadcasters, but one private radio station admitted it is a phenomenon that is “hard to stop.” [The Star] • In Syria, some war-wounded and sick people have gotten help from an unexpected source: Israel […]

Washington Memo: Trump as a Novel: An Implausible ‘Soap Opera Without the Sex and Fun’

“It’s early. We’re getting introduced to the characters,” said John Dean, the White House counsel and Watergate supporting player during the Nixon administration, who has become a frequent author in the decades since. “We’re not quite sure how this story is going to unfold, as comedy or tragedy.”He does have a guess. He pleaded guilty to a felony once.At present, though, the elements for either genre are slotting into place — an Allen Drury novel crossed with Shakespeare, with final touches entrusted to producers for the E! network.Foreign intrigue. Strained alliances at the Capitol. A blundering son […]

New York Today: New York Today: A Busy Time to Move

Weather.init(); }()); It should be clear for the morning commute, but watch out for showers later. The afternoon will be warm with a high near 86, and there’s a small chance of rain and thunderstorms after 2 p.m., so bring an umbrella. This evening should be lovely, cooling down to the low 70s. In the News • Four people have been arrested in the killings of four young Latino men on Long Island in April. [New York Times] Photo The four young men were killed on Long Island in April by people being initiated into the MS-13 gang, the authorities said. Credit Uli Seit for The New York Times • Mayor Bill de Blasio’s probable Republican opponent, Assemblywoman Nicole Malliotakis, has raised more money that counts toward the city’s six-to-one matching program […]

At a Luxury Complex in India, the Maids and the Madams Go to War

India’s vast disparity between rich and poor means members of a newly moneyed class are able to hire domestic help for low pay, with no contracts and few legal obligations.Continue reading the main storyThough they may resent their treatment, maids are typically afraid to lose their jobs, and of the “pull their employers may have with the authorities,” said Tripti Lahiri, the author of “Maid in India: Stories of Inequality and Opportunity Inside Our Homes.”Conflicts between domestic workers and employers are a regular feature of Indian crime logs, but mass violence is almost unheard-of, Ms. Lahiri said. That is partly because in Indian cities, many maids live in their employers’ homes, giving them little opportunity to build networks and compare notes.That has changed, however, as luxury high-rises proliferated in farmlands on the outskirts of New Delhi, and slum neighborhoods appeared beside them, in what Ms. Lahiri called “a perfect setup for an us vs. them clash.”In the case of Harshu Sethi and her maid, Johra Bibi, in Noida on Wednesday, the clash was Alfred Hitchcock-grade, awakening subterranean anxieties about the true relationship between the rich and the poor.On Tuesday, Ms. Sethi accused Ms. Bibi of stealing 17,000 rupees, or about $265, from a safe in her apartment. She said Ms. Bibi had admitted taking 10,000 rupees in back wages, and then disappeared […]

Live Briefing: Trump and Putin Meet at G-20 in Hamburg, as Protests Resume

Many streets in and around the city center — which is famous for its extreme left-wing scene — were blocked to ordinary traffic, though nearby public transport stations were open, albeit with increased security patrols. Demonstrations Thursday night turned violent after the police moved in to separate a group wearing balaclavas and masks — which German law forbids during public protests — in a section of the 12,000 people who had filled the streets outside the security perimeter. — Melissa Eddy and Steven Erlanger The ‘family’ posed for a group photo. Photo Leaders at the Group of 20 summit meeting in Hamburg, Germany, after posing for a group photograph. Credit Stephen Crowley/The New York Times After finally corralling the leaders to stand for the official “family photograph,” and persuading them to stop schmoozing with one another and take their seats, Ms. Merkel delivered a short and relatively anodyne opening statement. Continue reading the main story The German chancellor said she hoped that the summit meeting would “contribute to allaying” the “fears, needs and anxieties” of the world’s peoples. “We all know the great global challenges,” she said, “and time is pressing.” Those in the room represent two-thirds of the world’s population, four-fifths of the world’s gross domestic product and three-quarters of the world’s trade, she said, and the rest of the world expected results. Mr. Trump was on the side of the group photo, where leaders were mostly arrayed by seniority. […]

New York Today: New York Today: Commuting After Your Train Derails

Weather.init(); }()); The forecast looks somewhat sunny today. (It’ll be clearer tomorrow.) The high is expected to be about 85, and will hover around that level for the next couple of days. And it will be mostly cloudy later tonight, cooling down to around 70. In the News • Two supervisors were suspended as a piece of leftover rail stored in the tracks was blamed for Tuesday’s crash. [New York Times] Photo Workers on Tuesday night at the scene of the subway derailment. Credit Transport Workers Union Local 100 • The state Assembly has passed an omnibus bill containing a two-year deal for mayoral control of city schools. [New York Times] • Mayor Bill de Blasio’s office sent the Justice Department a letter saying that New York, a “sanctuary city,” complied with federal law. [New York Times] • An Onondaga teacher missed out on the principal’s job at the Onondaga Nation School. Some parents have been keeping their children home in protest. [New York Times] Photo The sports pavilion and the Onondaga Nation School. […]