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Janos Haits

UnCollege - Hacking Your Education - 0 views

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    UnCollege isn't just an idea or a website. It's a movement. It's a lifestyle. We believe that college isn't the only path to success. UnCollege is a social movement changing the notion that going to college is the only path to success. We empower students to hack their education through resources, writing, and workshops. We believe that everyone can live an UnCollege life by hacking their education.
Janos Haits

Bibliographic Framework Transition Initiative (Library of Congress) - 0 views

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    The Library of Congress is launching a review of the bibliographic framework to better accommodate future needs. A major focus of the initiative will be to determine a transition path for the MARC 21 exchange format in order to reap the benefits of newer technology while preserving a robust data exchange that has supported resource sharing and cataloging cost savings in recent decades. This work will be carried out in consultation with the format's formal partners -- Library and Archives Canada and the British Library -- and informal partners -- the Deutsche Nationalbibliothek and other national libraries, the agencies that provide library services and products, the many MARC user institutions, and the MARC advisory committees such as the MARBI committee of ALA, the Canadian Committee on MARC, and the BIC Bibliographic Standards Group in the UK.
Janos Haits

http://k-web.org/ - 0 views

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    "The Knowledge Web today is an activity rather than a web site-an expedition in time, space, and technology to map the interior landscape of human thought and experience. Thanks to the work of a team of dedicated volunteers, it will soon be an interactive space on the web where students, teachers, and other knowledge seekers can explore information in a highly interconnected, holistic way that allows for an almost infinite number of paths of exploration among people, places, things, and events."
thinkahol *

Hyper realistic reconstruction, Paleoanthropology, Human Evolution: Atelier Daynes - 0 views

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    Elisabeth Daynès’ hyper realistic reconstructions, based on fossil hominids, make a unique contribution to paleoanthropology and art, by retracing the path of human evolution and origins
thinkahol *

Berkeley Lab scientists open electrical link to living cells | KurzweilAI - 0 views

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    Scientists with the Lawrence Berkeley National Laboratory (Berkeley Lab) have designed an electrical link to living cells engineered to shuttle electrons across a cell's membrane to an external acceptor along a well-defined path. This direct channel could yield cells that can read and respond to electronic signals, electronics capable of self-replication and repair, or efficiently transfer sunlight into electricity.
thinkahol *

Breakthrough chip technology lights path to exascale computing: Optical signals connect... - 0 views

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    ScienceDaily (Dec. 3, 2010) - IBM scientists have unveiled a new chip technology that integrates electrical and optical devices on the same piece of silicon, enabling computer chips to communicate using pulses of light (instead of electrical signals), resulting in smaller, faster and more power-efficient chips than is possible with conventional technologies.
Skeptical Debunker

Tiny shelled creatures shed light on extinction and recovery 65 million years ago - 0 views

  • Scanning electron micrograph of the nanofossil Chiasmolithus from about 60 million years ago. This genus arose after the Cretacious Paleogene boundary mass extinction. The size about 8 microns.
  • The darkness caused by the collision would impair photosynthesis and reduce nannoplankton reproduction. While full darkness did not occur, the effects in the north would have lasted for up to six months. However, with ample sunlight and large amounts of nutrients in the oceans, the populations should have bounced back, even in the North, but they did not. The researchers suggest that toxic metals that where part of the asteroid, heavily contaminated the Northern oceans and were the major factor inhibiting recovery. "Metal loading is a great potential mechanism to delay recovery," said Bralower. "Toxic levels in the parts per billions of copper, nickel, cadmium and iron could have inhibited recovery." On the one hand, the researchers considered an impact scenario causing perpetual winter and ocean acidification to explain the slow recovery, but neither explains the lag between Southern and Northern Hemispheres. Trace metal poisoning, on the other hand, would have been severe near the impact in the Northern Hemisphere. When the high temperature debris from the impact hit the water, copper, chromium, aluminum, mercury and lead would have dissolved into the seawater at likely lethal levels for plankton. Iron, zinc and manganese -- normally micronutrients -- would reach harmful levels shortly after the impact. Other metal sources might be acid-rain leached soils or the effects of wildfires. Metals like these can inhibit reproduction or shell formation. The toxic metals probably exceeded the ability of organic compounds to bind them and remove them from the system. Because nannoplankton are the base of the food chain, larger organisms concentrate any metals found in nannoplankton making the metal poisoning more effective. With the toxic metals remaining in the oceans and the lack of sunlight, the length of time for recovery might increase.
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    An asteroid strike may not only account for the demise of ocean and land life 65 million years ago, but the fireball's path and the resulting dust, darkness and toxic metal contamination may explain the geographic unevenness of extinctions and recovery, according to Penn State geoscientists.
thinkahol *

Dr. Daniel G. Nocera - YouTube - 0 views

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    The supply of secure, clean, sustainable energy is arguably the most important scientific and technical challenge facing humanity in the 21st century. Rising living standards of a growing world population will cause global energy consumption to double by mid-century and triple by the end of the century. Even in light of unprecedented conservation, the additional energy needed is simply not attainable from long discussed sources these include nuclear, biomass, wind, geothermal and hydroelectric. The global appetite for energy is simply too much. Petroleum-based fuel sources (i.e., coal, oil and gas) could be increased. However, deleterious consequences resulting from external drivers of economy, the environment, and global security dictate that this energy need be met by renewable and sustainable sources. The dramatic increase in global energy need is driven by 3 billion low-energy users in the non-legacy world and by 3 billion people yet to inhabit the planet over the next half century. The capture and storage of solar energy at the individual level personalized solar energy drives inextricably towards the heart of this energy challenge by addressing the triumvirate of secure, carbon neutral and plentiful energy. This talk will place the scale of the global energy issue in perspective and then discuss how personalized energy (especially for the non-legacy world) can provide a path to a solution to the global energy challenge. Daniel G. Nocera is the Henry Dreyfus Professor of Energy at the Massachusetts Institute of Technology, Director of the Solar Revolutions Project and Director of the Eni Solar Frontiers Center at MIT. His group pioneered studies of the basic mechanisms of energy conversion in biology and chemistry. He has recently accomplished a solar fuels process that captures many of the elements of photosynthesis outside of the leaf. This discovery sets the stage for a storage mechanism for the large scale, distributed, deployment of solar energy. He has b
thinkahol *

Quantum magic trick shows reality is what you make it - physics-math - 22 June 2011 - N... - 2 views

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    In 1967, Simon Kochen and Ernst Specker proved mathematically that even for a single quantum object, where entanglement is not possible, the values that you obtain when you measure its properties depend on the context. So the value of property A, say, depends on whether you chose to measure it with property B, or with property C. In other words, there is no reality independent of the choice of measurement. It wasn't until 2008, however, that Alexander Klyachko of Bilkent University in Ankara, Turkey, and colleagues devised a feasible test for this prediction. They calculated that if you repeatedly measured five different pairs of properties of a quantum particle that was in a superposition of three states, the results would differ for the quantum system compared with a classical system with hidden variables. That's because quantum properties are not fixed, but vary depending on the choice of measurements, which skews the statistics. "This was a very clever idea," says Anton Zeilinger of the Institute for Quantum Optics, Quantum Nanophysics and Quantum Information in Vienna, Austria. "The question was how to realise this in an experiment." Now he, Radek Lapkiewicz and colleagues have realised the idea experimentally. They used photons, each in a superposition in which they simultaneously took three paths. Then they repeated a sequence of five pairs of measurements on various properties of the photons, such as their polarisations, tens of thousands of times. A beautiful experiment They found that the resulting statistics could only be explained if the combination of properties that was tested was affecting the value of the property being measured. "There is no sense in assuming that what we do not measure about a system has [an independent] reality," Zeilinger concludes.
Janos Haits

The Atlas of Economic Complexity - 0 views

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    mapping paths to prosperity
anonymous

Trivedi Science Research - 0 views

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    Trivedi Science™ heralds a new path to the way, we understand and perceive science - 'establishing a new paradigm of science'.
anonymous

Crop Production: An Enhanced Path with the Biofield Treatment - 0 views

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    The field of agriculture encompasses a wide range of activities wherein the cultivation of plants, animals, fungi and other life forms is done for fulfilling the requirements of food, medicine, fiber, bio fuel etc. to sustain and improve human life.
Janos Haits

BIBFRAME - Bibliographic Framework Initiative (Library of Congress) - 0 views

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    "Initiated by the Library of Congress, BIBFRAME provides a foundation for the future of bibliographic description, both on the web, and in the broader networked world. This site presents general information about the project, including presentations, FAQs, and links to working documents. In addition to being a replacement for MARC, BIBFRAME serves as a general model for expressing and connecting bibliographic data. A major focus of the initiative will be to determine a transition path for the MARC 21 formats while preserving a robust data exchange that has supported resource sharing and cataloging cost savings in recent decades."
Ivan Pavlov

How did complex life evolve? The answer could be inside out - 0 views

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    David Baum, University of Wisconsin, says: "All agree that eukaryotes arose from a symbiotic relationship between two cell types: bacteria that became mitochondria and a host cell, archaea, or a close relative of archaea, that became the cytoplasm and nucleus. This symbiosis explains the origin of mitochondria, but what about other eukaryotic structures, most notably the nucleus?" The Baums' inside-out theory provides a gradual path by which eukaryotic cells could have evolved. The first stage began with a bacterial cell whose outer membrane forms protrusions, which the Baums call 'blebs', that reached out from the cell. These protrusions trapped free-living mitochondria-like bacteria between them. Using the energy gained from being in close contact with bacteria (and using bacterial-derived lipids), cells were able to get bigger and expand the size of their blebs. The sides of the blebs formed the endoplasmic reticulum and their inner surfaces formed the outer membrane of the nucleus, with the original outer membrane of the archaeon becoming what we now call the inner nuclear membrane. Finally, the fusion of blebs with one another led to the formation of the plasma membrane. The result was the eukaryotic cell as we now know it. This inside-out theory is explained in more detail using a diagram in the research article (see notes to editors).
Paramedical Admission

Paramedical course admission - 0 views

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    By the assistance of www.paramedicaladmission.com you can get full direction for paramedical course admissionin good college. It will also help you to identify your career path and guides you to achieve your goals.It is one of the best education providers.
meenatanwar

Electronic Sensor - 0 views

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    PIR Sensor 170uA 12m Digital White - EKMC1603111. Manufacturer: Panasonic Product Category:
David Corking

New Particle Collider Operating in Secret - NYTimes.com - 0 views

  • "We may not have created a black hole, but it seems we may have discovered a way for elementary particles to shape the path of evolution. You just never know what you are going to find"
    • David Corking
       
      I am no arbiter of humour, but I think this April Fool prank is fairly lame (unless there is truth in the unlikely twitter rumour that the NYT was pranked)
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    Large Hadron Collider investigative journalism
Charles Daney

Space Panel Finds No Good Options | AVIATION WEEK - 0 views

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    Early results of cost analysis by the Augustine human spaceflight panel have found no good options for continuing human exploration of space within the constraints set by the Obama administration's fiscal 2010 budget plan for NASA.
David Corking

Wolfram Blog : Is Mathematica for K-12 Education? You Bet! - 0 views

  • let students explore concepts by manipulating an expression—or a graphical representation of an expression—with things like sliders, buttons, and checkboxes. When you wrap the Manipulate command around an existing calculation, Mathematica automatically creates a sophisticated interface that lets you and your students change values and see what happens in real time. It’s truly empowering! Now students can interact with everything from two-dimensional trajectory paths… to Riemann sums… to the phases of the planets… to almost anything else you can imagine. See the Wolfram Demonstrations Project for thousands of free ready-to-use examples.
  • Mathematica for the Classroom for only $49.
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    sounds like good value proprietary science + math software for schools
Charles Daney

Moon is target for high-energy cosmic rays | COSMOS magazine - 0 views

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    Astronomers have found a new way to search for high-energy cosmic rays, the most energetic particles in the universe, by scanning the face of the Moon.
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