Engineering News
October 31, 2005 Vol. 77, no. 10F

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Playing poker for a purpose

PLACE YOUR BETS: From left, CEE students Maggie Ortiz (senior), Helen Lam (junior), Matt Vaggione (junior), and Johnny Mendoza (freshman) play No-Limit Texas Hold ‘em Poker at an October 19 charity event in Davis Hall. More than 30 CEE students and faculty members raised about $300 for Hurricane Katrina survivors who are attending Berkeley. While the stakes weren’t high (chips were valued between five cents and two dollars), the civies showed plenty of poker faces and serious play. Cal’s chapter of the American Society of Civil Engineers (ASCE) hosted the fundraiser. (Photo Credit: Rachel Jackson)

The what-if-you-could club
Berkeley Innovation helps engineers tap into their creative side

Berkeley Innovation always begins with an annoying problem. This particular evening, the issue is taking out the trash. Fourteen members of the two-year-old club congregate in a loft-like space in Hearst Mining Building. They’re given large pieces of butcher paper and color markers.

“For tonight’s brainstorm, we’re doing something new called ‘Nine Windows,’” ME graduate student Jonathan Hey tells members. “Creative people tend to think naturally in time and space, so this is to remind you to do that.” The group breaks into teams to brainstorm: What are the problems and solutions associated with taking out the trash before, during, and afterward, around and within the trashcan, and the trash itself? [FULL STORY]

CEE team investigates levee failures in New Orleans
Preliminary findings uncover multiple breaches, poor construction

A team of 10 Berkeley engineers recently raced against time and reconstruction efforts to conduct a preliminary investigation of the 370-mile levee and floodwall system in New Orleans. The Katrina Recovery Task Force (KRTF), comprised of CEE faculty and graduate students, looked for failures, evidence of what caused the failures, and factors that made certain spots vulnerable. Engineers found a dozen or more breaches.

“We saw evidence of overtopping where a 25-foot wall of water came straight down over the levee like a waterfall and eroded out the base of the levee,” says CEE professor and levee expert Ray Seed. “But the three downtown levee breaks were failures of soil, not overtopping” as the Army Corps of Engineers originally concluded. “In one place, we found a floodgate left wide open.”

In some cases, the levees weren’t built down far enough into stable soil, the team concluded. In others, thoughtless engineering or piecemeal construction led to failures. “One of the things we discovered was the levees were of different heights,” says team member and CEE graduate student Rune Storesund. “Because they weren’t consistent, your lowest point is your weak point.” [FULL STORY]

The world is a matter of degree
EECS professor reflects on his pioneering theory, Fuzzy logic

In the Soda Hall office of EECS professor Lotfi Zadeh, there are so many books and papers stacked floor to ceiling that only a small footpath remains. The contents represent a lifetime of work that began before the age of computers and continues to proffer theories about them today, 55 years later.

At the center of it all is Fuzzy logic, a theory that challenges classical logic’s belief in absolute true or false. Its applications can be found in everything from cameras to car transmissions, elevator control to medical instrumentation. Zadeh, known worldwide as the “Father of Fuzzy logic,” will be at the center of the EECS department’s November 2-5 conference and celebration commemorating the fortieth anniversary of his pioneering theory.

Zadeh was born in Soviet Azerbaijan in 1921. When he was 10, his family moved to Iran, where he attended an American Presbyterian missionary school. “By six or seven, I already knew I wanted to be a scientist or engineer,” he recalls. He studied electrical engineering at the University of Tehran, graduating in 1942. He received his master’s from MIT, his Ph.D. from Columbia, and, in 1959, was recruited to Berkeley from a full professorship at Columbia. [FULL STORY]

 

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