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anonymous

50 Incredible Social Sites for Social Change | Clear View Education Blog - 4 views

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    For those who have a greater calling and want to make a difference in the world, these 50 sites have responded by setting up social platforms designed to connect volunteers, charities, entrepreneurs, and individuals.
Qien Kuen

World Without Walls: Learning Well with Others | Edutopia - 1 views

  • Welcome to the Collaboration Age, where even the youngest among us are on the Web, tapping into what are without question some of the most transformative connecting technologies the world has ever seen. These tools are allowing us not only to mine the wisdom and experiences of the more than one billion people now online but also to connect with them to further our understanding of the global experience and do good work together. These tools are fast changing, decidedly social, and rich with powerful learning opportunities for us all, if we can figure out how to leverage their potential.
isaac Mao

101 Killer Open Courseware Projects from Around the World: Ivy League and Beyond | The ... - 1 views

  • How will you obtain a higher education? Some major headlines in 2009 already play on the fears about how to pay for a higher education. Press releases from colleges want to quell those fears about monies for college, and politicians have introduced legislation to make education more affordable.
Ken Lee

MIT World | Distributed Intelligence - 3 views

shared by Ken Lee on 16 Apr 09 - Cached
  • MIT World is a free and open site that provides on demand video of significant public events at MIT. MIT World's video index contains more than 600 videos.
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    麻省讲座视频网
Oliver Ding

A new way to weaving knowledge of the World - 28 views

Thanks for invitation from Isaac. I just got idea about knowledge of social brain. Diigo > microblogging > regular blogging > Knol or Wikipedia > Books For spreading idea or meme, other way:) C...

knowledge sharing way

started by Oliver Ding on 14 Aug 08 no follow-up yet
isaac Mao

Free will - Wikipedia, the free encyclopedia - 1 views

  • It is claimed by some that quantum indeterminism is confined to microscopic phenomena.[54] The claim that events at the atomic or particulate level are unknowable can be challenged experimentally and even technologically: for instance, some hardware random number generators work by amplifying quantum effects into practically usable signals. However, this only amounts to macroscopic indeterminism if it can be shown that microscopic events really are indeterministic.
  • Hard incompatibilism is defended by Derk Pereboom, who identifies a variety of positions where free will is seen irrelevant to indeterminism/determinism, among them the following: Determinism (D) is true, D does not imply we lack free will (F), but in fact we do lack F. D is true, D does not imply we lack F, but in fact we don't know if we have F. D is true, and we do have F. D is true, we have F, and F implies D. D is unproven, but we have F. D isn't true, we do have F, and would have F even if D were true. D isn't true, we don't have F, but F is compatible with D. Derk Pereboom, Living without Free Will,[13] p. xvi. Pereboom calls positions 3 and 4 soft determinism, position 1 a form of hard determinism, position 6 a form of classical libertarianism, and any position that includes having F as compatibilism. He largely ignores position 2
  • Compatibilist models of free will often consider deterministic relationships as discoverable in the physical world (including the brain). Cognitive naturalism[118] is a physicalist approach to studing human consciousness in which mind is simply part of nature, perhaps merely a feature of many very complex self-programming feedback systems (for example, neural networks and cognitive robots), and so must be studied by the methods of empirical science, for example, behavioral science and the cognitive sciences like neuroscience and cognitive psychology.[101][119] Cognitive naturalism stresses the role of neurological sciences. Overall brain health, substance dependence, depression, and various personality disorders clearly influence mental activity, and their impact upon volition also is important.[113] For example, an addict may experience a conscious desire to escape addiction, but be unable to do so. The "will" is disconnected from the freedom to act. This situation is related to an abnormal production and distribution of dopamine in the brain.[120] The neuroscience of free will places restrictions on both compatibilist and incompatibilist free will conceptions. Compatibilist models adhere to models of mind in which mental activity (such as deliberation) can be reduced to physical activity without any change in physical outcome. Although compatibilism is generally aligned to (or is at least compatible with) physicalism, some compatibilist models describe the natural occurrences of deterministic deliberation in the brain in terms of the first person perspective of the conscious agent performing the deliberation.[7] Such an approach has been considered a form of identity dualism. A description of "how conscious experience might affect brains" has been provided in which "the experience of conscious free will is the first-person perspective of the neural correlates of choosing".[7]
isaac Mao

Face to Face: Alan Kay Still Waiting for the Revolution | Scholastic.com - 7 views

  • Since inventing much of the technology behind personal computing in the late 1960s, Alan Kay has dedicated his work to developing better learning environments for children. Now a senior researcher at HP and the president of Viewpoints Research Institute, Kay is launching Squeak, a multimedia authoring tool that allows children to construct dynamic simulations of real-world phenomena. We spoke with him about the unfulfilled promise of technology in schools—and about what computers have in common with pianos.
isaac Mao

The Human Brain - Exercise - 13 views

  • Only recently have scientists been able to learn how the neural network of the brain forms. Beginning in the womb and throughout life this vast network continues to expand, adapt, and learn.
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  • Plasticity is the basic mental drive that networks your brain, giving you cognition and memory – fluidity, versatility, and adaptability.
  • Before birth you created neurons, the brain cells that communicate with each other, at the rate of 15 million per hour! When you emerged into the world, your 100 billion neurons were primed to organize themselves in response to your new environment – no matter the culture, climate, language, or lifestyle.
  • A healthy, well-functioning neuron can be directly linked to tens of thousands of other neurons,
  • A healthy, well-functioning neuron can be directly linked to tens of thousands of other neurons, creating a totality of more than a hundred trillion connections – each capable of performing 200 calculations per second!
  • Many neuroscientists believe that learning and memory involve changes at neuron-to-neuron synapses.
  • Travel is another good way to stimulate your brain. It worked for our ancestors, the early Homo sapiens. Their nomadic lifestyle provided a tremendous stimulation for their brains that led to the development of superior tools and survival skills. In comparison, the now-extinct Neanderthal was a species that for thousands of years apparently did not venture too far from their homes. (Maybe they were simply content with their lives – in contrast to the seldom-satisfied sapien.)
  • Exercise is a natural part of life, although these days we have to consciously include it in our daily routine. Biologically, it was part of survival, in the form of hunting and gathering or raising livestock and growing food. Historically, it was built into daily life, as regular hours of physical work or soldiering. What is now considered a form of exercise – walking –was originally a form of transportation.
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