Jeff Walzer's Profile

Member since Mar 20, 2008, follows 2 people, 1 public groups, 566 public bookmarks (790 total).

More »
Tags

Top Tags:

More »
Recent Bookmarks and Annotations

  • Afghan Militias Battle Taliban With Aid of U.S. - NYTimes.com about 13 hours ago
    • The Americans also say they will tie them directly to the Afghan government.

      These checks aim to avoid repeating mistakes of the past — either creating more Afghan warlords, who have defied the government’s authority for years, or arming Islamic militants, some of whom came back to haunt the United States.

    • The Americans say they will keep the groups small and will limit the scope of their activities to protecting villages and manning checkpoints.
    • 3 more annotations...
  • Obama's Afghanistan strategy should team our soldiers with their militias. - By Fred Kaplan - Slate Magazine about 13 hours ago
    • A tribe-centered strategy may appeal to Obama in several ways. First, it keeps the Afghan people, not American occupiers, at the center of the operation. The U.S. soldiers live alongside the tribes, build trust, train them, supply them, gather intelligence from them, and fight with them. We are supporting players, not the lead.
    • Second, these teams of U.S. soldiers are small. As Gant puts it, the approach requires a lot of time—many months to gain a foothold, years to make the bonds stick—but not a lot of manpower.
    • 3 more annotations...
  • Why not pay for what works? | ZDNet Healthcare | ZDNet.com on 2009-11-12
    • They point to a RAND Corp. study saying that “one-third or more of all procedures performed in the United States are of questionable benefit.”
    • The way to enforce it is through comparative effectiveness. Analyze data from millions of patients, develop best practices, and move physicians toward the most cost-effective solution.
    • 6 more annotations...
  • untitled on 2009-11-11
    • Here's how Starnes described the idea behind carb cycling:
      "By fluctuating macronutrients on a daily basis, we can ensure
      that performance and muscle building can be optimized on the days
      when it's most important, while burning fat on the other
      days."
    • If you never vary your daily calories or macros,
      you end up overfeeding yourself on the days you're either
      resting or training light, and perhaps eating too little on the
      days you train the hardest.
    • 9 more annotations...
  • untitled on 2009-11-11
    • Carbohydrate allows you to continue training hard. It also controls
      the body's insulin levels - and insulin is a very anabolic and
      anti-catabolic hormone. Proper insulin management / manipulation is
      a HUGE factor in losing fat while maintaining (and even gaining)
      muscle.
    • Don't be afraid of carbs - just be afraid of mismanaging
      them. A good general rule is to keep carbs in your first meal
      or two of the day, and also in the peri-workout
      window.
    • 6 more annotations...
  • Schneier on Security: Is Antivirus Dead? on 2009-11-10
    • Often it's impossible to do both A and B -- there's no time to do both, it's too expensive to do both, or whatever -- and you have to choose. In that case, you look at A and B and you make you best choice. But it's almost always more secure to do both.
    • Yes, antivirus programs have been getting less effective as new viruses are more frequent and existing viruses mutate faster. Yes, antivirus companies are forever playing catch-up, trying to create signatures for new viruses. Yes, signature-based antivirus software won't protect you when a virus is new, before the signature is added to the detection program. Antivirus is by no means a panacea.
    • 4 more annotations...
  • Phys Ed: Why Doesn’t Exercise Lead to Weight Loss? - Well Blog - NYTimes.com on 2009-11-04
    • It is well known physiologically that, while high-intensity exercise demands mostly carbohydrate calories (since carbohydrates can quickly reach the bloodstream and, from there, laboring muscles), low-intensity exercise prompts the body to burn at least some stored fat. All of the subjects ate three meals a day.
    • “The message of our work is really simple,” although not agreeable to hear, Melanson said. “It all comes down to energy balance,” or, as you might have guessed, calories in and calories out. People “are only burning 200 or 300 calories” in a typical 30-minute exercise session, Melanson points out. “You replace that with one bottle of Gatorade.”
    • 2 more annotations...
  • Up the Cosmic Distance Ladder § SEEDMAGAZINE.COM on 2009-10-19
    • Consider this: We live in a universe so large that light itself (and nothing goes faster) takes years to travel between stars, eons to travel between galaxies. All we see in the sky are essentially old photos of celestial objects as they were when their light first left to travel to Earth. When we look across space, we also look back in time.
    • the closer an object is to the two observation points, the greater that object’s parallax. Using the principle of triangulation, an observer can calculate the distance to an object using the object’s observed parallax and the known distance between the two observation points.
  • Being pushed around by empty space: The Casimir Effect « Gravity and Levity on 2009-10-12
    • What makes everything so confusing is that apparently the quantum field is always “boiling”.  It is filled with a certain dense energy, one which allows particles to spontaneously pop in and out of existence.  In fact, our most detailed and accurate description of forces is that they involve the transfer of energy across the quantum field via short-lived excitations which can be called “particles” or “virtual particles”.
    • Currently, we have to say that we don’t even understand the zero-body problem!  We can’t say for sure anymore what “empty space” is like, so apparently we have been making negative progress over the past 300 years.
    • 6 more annotations...
  • Discover Interview: Roger Penrose Says Physics Is Wrong, From String Theory to Quantum Mechanics | Cosmology | DISCOVER Magazine on 2009-10-06
    • Quantum mechanics is an incredible theory that explains all sorts of things that couldn’t be explained before, starting with the stability of atoms. But when you accept the weirdness of quantum mechanics [in the macro world], you have to give up the idea of space-time as we know it from Einstein. The greatest weirdness here is that it doesn’t make sense. If you follow the rules, you come up with something that just isn’t right.
    • It doesn’t make any sense, and there is a simple reason. You see, the mathematics of quantum mechanics has two parts to it. One is the evolution of a quantum system, which is described extremely precisely and accurately by the Schrödinger equation. That equation tells you this: If you know what the state of the system is now, you can calculate what it will be doing 10 minutes from now. However, there is the second part of quantum mechanics—the thing that happens when you want to make a measurement. Instead of getting a single answer, you use the equation to work out the probabilities of certain outcomes. The results don’t say, “This is what the world is doing.” Instead, they just describe the probability of its doing any one thing. The equation should describe the world in a completely deterministic way, but it doesn’t.
    • 4 more annotations...

More »
Groups

  • Translation Memory 2.0

    12 members, 24 items

    This free Diigo social bookmarking group is a mashup to the Ning social group "Collaborative Translation - Translation Memory 2.0 (Creative Commons License)".

Diigo is about better ways to research, share and collaborate on information. Learn more »

Join Diigo