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NFAs – non deterministic finite state automata

Fungus on trees in the woods, home Falmouth, Va
I am teaching Theoretical Foundations of Computer Science again, and so the exploration and explanation of nod-deterministic finite state automata is on my mind. Here are a few related links

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Oliver’s 5 loudest shows

Oliver at a show

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Learn to program or be programmed

Fungus o trees in the woods, home Falmouth, Va

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Good Deadbeat video

APtBS guitar at a show

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links for Anonymous

Autumn leaves beech tree, home Falmouth, VaI was asked to do a phone interview on  Voice of Russia Radio on Wednesday, September 14 about the group Anonymous.

Summary provided by Voice of Russia: “In the US, the FBI is now targeting one of the biggest hacker groups Anonymous. It has reportedly raided multiple homes in California, Florida, New Jersey, and New York as part of a coordinated nationwide crackdown on illegal cyber activities. Ernie Ackermann,Professor of Computer Science at University of Mary Washington in Fredericksburg, Virginia, says there are many politically motivated people who are upset with the present state of the world and would like to change things and see a way to do that, but what they do is nevertheless illegal.”

Listen to the full interview. 

Here are a few of the links for some background material.

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Another underground club goes …

Backyard scene after a snow, home Falmouth, VaI saved this because of the mention of Death By Audio in Brooklyn and wondering how long it will be able to continue. I am very proud of Oliver and everyone else at death by Audio who keep this venue going.

Chickpea and roasted peppers Salad

From the woods near  home Falmouth, Va

Links for learning/translating Italian

Snow outside our dinning room, home Falmouth, VaWe signed up for a course title “Beginning Conversational Italian” through the Fredericksburg Parks and Recreation Program. we meet once a week at the community center. Here are a few weeks to accompany that class.

The paln is for us to travel to Italy in about a year, after I retire.

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APtBS Bonus Track on Batman Album

APtBS poster  2011

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Tendinitis and other guitar related injuries

Sign on access road to Rapahannock River, Fredericksburg, Va

I developed  De Quervain’s tenosynovitis or tendonitis or inflammation of the tendons on the thumb side of my left wrist.  This summer I worked hard on learning a particular style of picking and chords on guitar to mimic the playing of San Francisco bay Blues by the Weaves at their 1963 concert in Carnegie Hall, NY. I am taking an anti-inflammatory drug daily, not playing guitar, and occasionally wearing a wrist splint. Here is a collection of links abut developing, dealing with, and preventing tendonitis for guitar players.
  • “Most people don’t think about preventing guitar related injuries until it’s too late. That’s a shame, since most can be avoided with common sense and simple precautions.”
  • “ike most guitarists, I never thought I’d get tendonitis, not to mention several times. One side effect is that, since launching my music career, I’ve fielded hundreds of questions about it. These range from how to avoid it, diagnose it, get treatment (and from whom), do home therapy, and continue with playing – and more importantly, get on with your life.”
  • “Playing guitar can be painful, particularly if you stay at it for hours at a time. To begin with, we must use our bodies in an asymmetrical way to hold the guitar, resulting in muscle imbalances. In addition, we cave in the front of our bodies as we wrap around the instrument and we usually distort our necks and compress our vertebra as well. We risk injury from repetitive motion and we tend to build tension in our necks, arms and hands with extended practice. Even the most body-conscious players can fall victim to pain and injury at times. With some information and a few exercises these problems can be avoided or solved.”
  • “Tendonitis is a problem always lurking around the corner for string musicians. It can strike when you least expect it. It is an inflammatory condition of a tendon, often at a joint, especially the wrist, knee, or elbow. It is caused by tearing and abrasions of a tendon due to overwork under conditions of high muscle stress. It is typically brought on by repeated controlled movements, and is an occupational hazard of musicians, typists, carpenters, assembly line workers, tennis players, and computer game nuts.”
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