Fill plastic containers with water. Leave about an inch of space inside each one. Place the containers in the refrigerator and freezer. This chilled or frozen water will help keep food cold if the power goes out. Frozen food will keep two or three days in a well filled freezer.’When I wrote a magazine article on the emotional and behavioural fallout of being raised by a “difficult” mother last year, I was amazed by the number of letters and emails I received from both men and women who wanted to share their experiences.The three had picked up weapons, including an axe, from Moore’s house and they had run into a group of people including Adam.The power of the mind is real whether it is a gift from a Christian God or simply a force of nature, said Jill Fischer, a partner with Integrity Psychological Services in Monroeville.9/11 widow
mulberry bags for sale advances as Pitt engineers demonstrate pattern recognition
PITTSBURGH (September 2, 2016) . The potential to develop “materials that compute” has taken another leap at the University of Pittsburgh’s Swanson School of Engineering, where researchers for the first time have demonstrated that the material can be designed to recognize simple patterns. “Pattern recognition for materials that compute,” published today in the AAAS journal Science Advances (DOI: 10.1126/sciadv.1601114), continues the research of Anna C. Balazs, Distinguished Professor of Chemical and Petroleum Engineering, and Steven P. Levitan, the John A. Jurenko Professor of Electrical and Computer Engineering. Yashin, Research Assistant Professor of Chemical and Petroleum Engineering.
The computations were modeled utilizing Belousov Zhabotinsky (BZ) gels, a substance that oscillates in the absence of external stimuli, with an overlaying piezoelectric (PZ) cantilever. These so called BZ PZ units combine Dr. Balazs’ research in BZ gels and Dr. Levitan’s expertise in computational modeling and oscillator based computing systems.
“BZ PZ computations are not digital, like most people are familiar with, and so to recognize something like a blurred pattern within an image requires nonconventional computing,” Dr. Balazs explained. “For the first time, we have been able to show how these materials would perform the computations for pattern recognition.”
Dr. Levitan and Mr. Fang first stored a pattern of numbers as a set of polarities in the BZ PZ units, and the input patterns are coded through the initial phase of the oscillations imposed on these units. The computational modeling revealed that the input pattern closest to the stored pattern exhibits the fastest convergence time to the stable synchronization behavior, and is the most effective at recognizing patterns. In this study, the materials were programmed to recognize black and white pixels in the shape of numbers that had been distorted.
Compared to a traditional computer, these computations are slow and take minutes. However, Dr. Yashin notes that the results are similar to nature, which moves at a “snail’s pace.”
“Individual events are slow because the period of the BZ oscillations is slow,” Dr. Yashin said. “However, there are some tasks that need a longer analysis, and are more natural in function. That’s why this type of system is perfect to monitor environments like the human body.”
For example, Dr. Yashin said that patients recovering from a hand injury could wear a glove that monitors movement, and can inform doctors whether the hand is healing properly or if the patient has improved mobility. Another use would be to monitor individuals at risk for early onset Alzheimer’s, by wearing footwear that would analyze gait and compare results against normal movements, or a garment that monitors cardiovascular activity for people at risk of heart disease or stroke.
Since the devices convert chemical reactions to electrical energy, there would be no need for external electrical power. This would also be ideal for a robot or other device that could utilize the material as a sensory skin.
“Our next goal is to expand from analyzing black and white pixels to grayscale and more complicated images and shapes, as well as to enhance the devices storage capability,” Mr. Fang said. “This was an exciting step for us and reveals that the concept of “materials that compute” is viable.”
The research is funded by a five year National Science Foundation Integrated NSF Support Promoting Interdisciplinary Research and Education (INSPIRE) grant, which focuses on complex and pressing scientific problems that lie at the intersection of traditional disciplines.
“As computing performance technology is approaching the end of Moore’s law growth, the demands and nature of computing are themselves evolving,” noted Sankar Basu, NSF program director. “This work at the University of Pittsburgh, supported by the NSF, is an example of this groundbreaking shift away from traditional silicon CMOS based digital computing to a non von Neumann machine in a polymer substrate, with remarkable low power consumption. The project is a rare example of much needed interdisciplinary collaboration between material scientists and computer architects.”
Theresa Sullivan Barger Special to The CourantGettysburg ends the season on two straight losses after an impressive regular season, which is almost a mirror image of Roanoke a season ago. Roanoke heads to Stevenson.Wilson and her mother both live in the Lockport area. Wilson tookpart in Monday’s special flag raising ceremony, which is part of the month long Lockport Blue campaign that was organized to honor those currently in law enforcement and officers that have died in the line of duty.