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Jeffrey Chen

Gene positioning effects evolution - 0 views

www.princeton.edu/...index.xml

paper evolution digiciv

shared by Jeffrey Chen on 19 Oct 10 - No Cached
  • Jeffrey Chen on 19 Oct 10
     
    "We usually think of natural selection as acting directly on the genes that influence a specific trait," said Leonid Kruglyak, one of the co-authors on the paper and the William R. Harman '63 and Mary-Love Harman Professor in Genomics at Princeton. "This paper shows that there is an indirect evolutionary force that can override this direct effect -- selection acting on neighboring genes that just happen to travel together on a chromosome with the genes that influence the trait."
Gideon Burton

Open Notebook Science (Limits to the detection of early warning signals) - 0 views

www.carlboettiger.info/...-of-early-warning-signals.html

ons open notebook science

shared by Gideon Burton on 22 May 12 - No Cached
  • Gideon Burton on 22 May 12
     
    Carl Boettiger's science paper, with links to his open notebook. Good example of this variety of science in the open.
Greg Williams

Connectivism - 1 views

www.itdl.org/...article01.htm

Connectivism learning theory education George Siemens

shared by Greg Williams on 12 Sep 12 - Cached
  • Do we acquire it throu
  • These theories, however, were developed in a time when learning was not impacted through technology.
  • In many fields the life of knowledge is now measured in months and years.
  • ...29 more annotations...
  • The amount of knowledge in the world has doubled in the past 10 years and is doubling every 18 months according to the American Society of Training and Documentation (ASTD). To combat the shrinking half-life of knowledge, organizations have been forced to develop new methods of deploying instruction.
  • Technology is altering (rewiring) our brains. The tools we use define and shape our thinking
  • learning as a lasting changed state (emotional, mental, physiological (i.e. skills)) brought about as a result of experiences and interactions with content or other people.
  • Objectivism (similar to behaviorism) states that reality is external and is objective, and knowledge is gained through experiences. Pragmatism (similar to cognitivism) states that reality is interpreted, and knowledge is negotiated through experience and thinking. Interpretivism (similar to constructivism) states that reality is internal, and knowledge is constructed.
  • Behaviorism states that learning is largely unknowable, that is, we can’t possibly understand what goes on inside a person (the “black box theory”)
  • Cognitivism often takes a computer information processing model. Learning is viewed as a process of inputs, managed in short term memory, and coded for long-term recall.
  • Constructivism suggests that learners create knowledge as they attempt to understand their experiences
  • Constructivism assumes that learners are not empty vessels to be filled with knowledge. Instead, learners are actively attempting to create meaning. Learners often select and pursue their own learning. Constructivist principles acknowledge that real-life learning is messy and complex.
  • learning that occurs outside of people
  • The ability to synthesize and recognize connections and patterns is a valuable skill.
  • In today’s environment, action is often needed without personal learning – that is, we need to act by drawing information outside of our primary knowledge.
  • An entirely new approach is needed.
  • How can we continue to stay current in a rapidly evolving information ecology?
  • We can no longer personally experience and acquire learning that we need to act. We derive our competence from forming connections.
  • Unlike constructivism, which states that learners attempt to foster understanding by meaning making tasks, chaos states that the meaning exists – the learner's challenge is to recognize the patterns which appear to be hidden
  • The capacity to form connections between sources of information, and thereby create useful information patterns, is required to learn in our knowledge economy.
  • A network can simply be defined as connections between entities.
  • Nodes that successfully acquire greater profile will be more successful at acquiring additional connections
  • Finding a new job, as an example, often occurs through weak ties. This principle has great merit in the notion of serendipity, innovation, and creativity. Connections between disparate ideas and fields can create new innovations.
  • Connectivism is the integration of principles explored by chaos, network, and complexity and self-organization theories.
  • Learning and knowledge rests in diversity of opinions.
  • Decision-making is itself a learning process. Choosing what to learn and the meaning of incoming information is seen through the lens of a shifting reality. While there is a right answer now, it may be wrong tomorrow due to alterations in the information climate affecting the decision.
  • The starting point of connectivism is the individual.
  • This cycle of knowledge development (personal to network to organization) allows learners to remain current in their field through the connections they have formed.
  • the internet leverages the small efforts of many with the large efforts of few.
  • example of a Maricopa County Community College system project that links senior citizens with elementary school students in a mentor program. The children “listen to these “grandparents” better than they do their own parents, the mentoring really helps the teachers…the small efforts of the many- the seniors – complement the large efforts of the few – the teachers.” (2002). This amplification of learning, knowledge and understanding through the extension of a personal network is the epitome of connectivism.
  • Implications
  • The pipe is more important than the content within the pipe. Our ability to learn what we need for tomorrow is more important than what we know today. A real challenge for any learning theory is to actuate known knowledge at the point of application.
  • acknowledges the tectonic shifts in society where learning is no longer an internal, individualistic activity
  • Greg Williams on 12 Sep 12
     
    "Technology is altering (rewiring) our brains. The tools we use define and shape our thinking." . . . or so this fellow argues in a pretty detailed paper
Parker Woody

Gates and Hewlett Foundations Focus on Online Learning - NYTimes.com - 0 views

www.nytimes.com/...11online.html

digiciv online learning

shared by Parker Woody on 11 Oct 10 - No Cached
  • Parker Woody on 11 Oct 10
     
    An interesting article I found in the paper this morning about what is being done by these institutions to increase the use of technology in post secondary education. All content will be free.
James Wilcox

Airplane Timeline - Greatest Engineering Achievements of the Twentieth Century - 0 views

www.greatachievements.org/?id=3728

digiciv

shared by James Wilcox on 15 Nov 10 - Cached
    • James Wilcox
      James Wilcox on 15 Nov 10
       
      I love helicopters!  But I never knew that they had been around for so many years.
  • 1947   Sound barrior broken U.S. Air Force pilot Captain Charles "Chuck" Yeager becomes the fastest man alive when he pilots the Bell X-1 faster than sound for the first time on October 14 over the town of Victorville, California.
  • 1952   Discovery of the area rule of aircraft design Richard Whitcomb, an engineer at Langley Memorial Aeronautical Laboratory, discovers and experimentally verifies an aircraft design concept known as the area rule. A revolutionary method of designing aircraft to reduce drag and increase speed without additional power, the area rule is incorporated into the development of almost every American supersonic aircraft. He later invents winglets, which increase the lift-to-drag ratio of transport airplanes and other vehicles.
  • ...7 more annotations...
  • 1925-1926   Introduction of lightweight, air-cooled radial engines The introduction of a new generation of lightweight, air-cooled radial engines revolutionizes aeronautics, making bigger, faster planes possible.
  •   1917   The Junkers J4, an all-metal airplane, introduced Hugo Junkers, a German professor of mechanics introduces the Junkers J4, an all-metal airplane built largely of a relatively lightweight aluminum alloy called duralumin.
  • 1904   Concept of a fixed "boundary layer" described in paper by Ludwig Prandtl German professor Ludwig Prandtl presents one of the most important papers in the history of aerodynamics, an eight-page document describing the concept of a fixed "boundary layer," the molecular layer of air on the surface of an aircraft wing. Over the next 20 years Prandtl and his graduate students pioneer theoretical aerodynamics.
  • 1933   First modern commercial airliner In February, Boeing introduces the 247, a twin-engine 10-passenger monoplane that is the first modern commercial airliner. With variable-pitch propellers, it has an economical cruising speed and excellent takeoff. Retractable landing gear reduces drag during flight.
  • 935   First practical radar British scientist Sir Robert Watson-Watt patents the first practical radar (for radio detection and ranging) system for meteorological applications. During World War II radar is successfully used in Great Britain to detect incoming aircraft and provide information to intercept bombers.
  • 1937   Jet engines designed Jet engines designed independently by Britain’s Frank Whittle and Germany’s Hans von Ohain make their first test runs. (Seven years earlier, Whittle, a young Royal Air Force officer, filed a patent for a gas turbine engine to power an aircraft, but the Royal Air Ministry was not interested in developing the idea at the time. Meanwhile, German doctoral student Von Ohain was developing his own design.) Two years later, on August 27, the first jet aircraft, the Heinkel HE 178, takes off, powered by von Ohain’s HE S-3 engine.
  •   1939   First practical singlerotor helicopters Russian emigre Igor Sikorsky develops the VS-300 helicopter for the U.S. Army, one of the first practical singlerotor helicopters.
Jeffrey Whitlock

Mobile Phones in Developing Countries Jerry Hausman, MIT First ... - 0 views

www.google.com/url

economics mobile phones

shared by Jeffrey Whitlock on 17 Nov 10 - No Cached
  • Jeffrey Whitlock on 17 Nov 10
     
    If you get the chance, you should really look into this paper on how Mobile Phones have penetrates and affected developing nations.
Sean Watson

Philosophical Transactions of the Royal Society - Wikipedia, the free encyclopedia - 0 views

en.wikipedia.org/...nsactions_of_the_Royal_Society

shared by Sean Watson on 18 Sep 10 - No Cached
  • In 1672, the journal published Newton's first paper New Theory about Light and Colours
  • it has remained in continuous publication ever since, making it the world's longest running scientific journal
  • The use of the word "philosophical" in the title derives from the phrase "natural philosophy", which was the equivalent of what we would now generically call "science
  • ...3 more annotations...
  • Oldenburg published the journal at his own personal expense and seems to have entered into an agreement with the Council of the Royal Society allowing him to keep any resulting profits
  • He was to be disappointed, however, since the journal performed poorly from a financial point of view during Oldenburg's lifetime
  • Isaac Newton, Michael Faraday, and Charles Darwin
Shuan Pai

Civil Disobedience: The Destroyer of Democracy - 0 views

webcache.googleusercontent.com/search

civil disobedience democracy

shared by Shuan Pai on 09 Oct 10 - No Cached
  • Shuan Pai on 09 Oct 10
     
    An interesting paper on civil disobedience
Rhett Ferrin

Crowdsourcing - 0 views

crowdsourcing.typepad.com

shared by Rhett Ferrin on 29 Sep 10 - Cached
    • Rhett Ferrin
      Rhett Ferrin on 10 Nov 10
       
      This is the author's blog about crowdsourcing, so this will give you relevant, up to date information.
  • Crowdsourcing: A Definition I like to use two definitions for crowdsourcing: The White Paper Version: Crowdsourcing is the act of taking a job traditionally performed by a designated agent (usually an employee) and outsourcing it to an undefined, generally large group of people in the form of an open call. The Soundbyte Version: The application of Open Source principles to fields outside of software.
  • Gideon Burton on 22 Oct 10
     
    Jeff Howe's blog about the topic he has championed in Wired and through his book Crowdsourcing.
Katherine Chipman

Joseph-Marie Jacquard Biography (1752-1834) - 0 views

www.madehow.com/...Joseph-Marie-Jacquard.html

jacquard

shared by Katherine Chipman on 14 Oct 10 - No Cached
  • the Jacquard loom used a system of hooks and needles to lift the appropriate warp threads. The pattern was stored on a collection of thick paper cards perforated with rectangular holes. As the fabric was woven, the hooks were held stationary by the surface of the card. However, whenever a hole was encountered, a hook would be allowed to pass through to lift its thread. By stringing together a large number of cards, an intricate pattern could be created.
  • Katherine Chipman on 14 Oct 10
     
    How Jacquard's loom worked
Braquel Burnett

LDS.org - Friend Article - Bringing the Book of Mormon to Life - 0 views

lds.org/...index.jsp

lds

shared by Braquel Burnett on 27 Oct 10 - No Cached
    • Braquel Burnett
      Braquel Burnett on 27 Oct 10
       
      What a cool idea. It can be a great way to learn the gospel and to bear your testimony.
  • You Can Do It Too!
  • It’s a gray, drizzly Saturday morning, but the children of the Danbury Connecticut Ward aren’t in their pajamas watching cartoons or playing video games. They’re busy making videos of their own. And their videos will help thousands of people learn about the Book of Mormon! It all started when their bishop had a great idea. Bishop Summerhays is a media expert who teaches children from many countries how to use technology to create positive messages. Why not teach the children in his ward the same thing? Now the children, joined by children from the Newtown Ward, are sitting at five long tables in the Primary room. Stacks of construction paper and poster board, pens, and scissors are on the tables. Each group will be making an animated video of a different Book of Mormon story:
Katherine Chipman

http://ocw.mit.edu/courses/linguistics-and-philosophy/24-00-problems-of-philosophy-fall... - 1 views

ocw.mit.edu/...moralrelativ.pdf

relativism

shared by Katherine Chipman on 28 Oct 10 - No Cached
  • Katherine Chipman on 28 Oct 10
     
    A great paper exploring relativism.
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