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101.
24 Ss participated in two experiments in which they were required to pick out, from printed panels containing 16 dials, the dial with a deviating pointer. Two versions of a uniformly-aligned configuration and one version of a symmetrically-aligned configuration were studied. S was required to identify both the "different" dial and the direction of the deviating pointer. It was found that (1) both configurations were equally effective for check reading after extended practice, (2) early in practice symmetrical alignment configurations appear to be more difficult, (3) transfer effects from pointer symmetry to uniform alignment are greater than transfer effects in the other direction. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
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Low-glycemic-load diets: impact on obesity and chronic diseases 总被引:3,自引:0,他引:3
Historically, carbohydrates have been thought to play only a minor role in promoting weight gain and in predicting the risk of development of chronic disease. Most of the focus had been on reducing total dietary fat. During the last 20 years, fat intake decreased, while the number of individuals who were overweight or developed a chronic conditions have dramatically increased. Simultaneously, the calories coming from carbohydrate have also increased. Carbohydrates can be classified by their post-prandial glycemic effect, called the glycemic index or glycemic load. Carbohydrates with high glycemic indexes and high glycemic loads produce substantial increases in blood glucose and insulin levels after ingestion. Within a few hours after their consumption, blood sugar levels begin to decline rapidly due to an exaggerated increase in insulin secretion. A profound state of hunger is created. The continued intake of high-glycemic load meals is associated with an increased risk of chronic diseases such as obesity, cardiovascular disease, and diabetes. In this review, the terms glycemic index and glycemic load are defined, coupled with an overview of short- and long-term changes that occur from eating diets of different glycemic indexes and glycemic loads. Finally, practical strategies for how to design low-glycemic-load diets consisting primarily of low-glycemic carbohydrates are provided. 相似文献
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Mike Wald John-Mark Bell Philip Boulain Karl Doody Jim Gerrard 《International Journal of Speech Technology》2007,10(1):1-15
Lectures can be digitally recorded and replayed to provide multimedia revision material for students who attended the class
and a substitute learning experience for students unable to attend. Deaf and hard of hearing people can find it difficult
to follow speech through hearing alone or to take notes while they are lip-reading or watching a sign-language interpreter.
Synchronising the speech with text captions can ensure deaf students are not disadvantaged and assist all learners to search
for relevant specific parts of the multimedia recording by means of the synchronised text. Automatic speech recognition has
been used to provide real-time captioning directly from lecturers’ speech in classrooms but it has proved difficult to obtain
accuracy comparable to stenography. This paper describes the development, testing and evaluation of a system that enables
editors to correct errors in the captions as they are created by automatic speech recognition and makes suggestions for future
possible improvements. 相似文献
108.
Felix Beyeler Adrian Neild Stefano Oberti Dominik J. Bell Yu Sun Jrg Dual Bradley J. Nelson 《Journal of microelectromechanical systems》2007,16(1):7-15
This paper reports an electrostatic microelectromechanical systems (MEMS) gripper with an integrated capacitive force sensor. The sensitivity is more than three orders of magnitude higher than other monolithically fabricated MEMS grippers with force feedback. This force sensing resolution provides feedback in the range of the forces that dominate the micromanipulation process. A MEMS ultrasonic device is described for aligning microobjects suspended in water using ultrasonic fields. The alignment of the particles is of a sufficient accuracy that the microgripper must only return to a fixed position in order to pick up particles less than 100 mum in diameter. The concept is also demonstrated with HeLa cells, thus providing a useful tool in biological research and cell assays 相似文献
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Coiras E. Mignotte P.-Y. Petillot Y. Bell J. Lebart K. 《Radar, Sonar & Navigation, IET》2007,1(1):83-90
A proof of concept for a model-less target detection and classification system for side-scan imagery is presented. The system is based on a supervised approach that uses augmented reality (AR) images for training computer added detection and classification (CAD/CAC) algorithms, which are then deployed on real data. The algorithms are able to generalise and detect real targets when trained on AR ones, with performances comparable with the state-of-the-art in CAD/CAC. To illustrate the approach, the focus is on one specific algorithm, which uses Bayesian decision and the novel, purpose-designed central filter feature extractors. Depending on how the training database is partitioned, the algorithm can be used either for detection or classification. Performance figures for these two modes of operation are presented, both for synthetic and real targets. Typical results show a detection rate of more that 95% and a false alarm rate of less than 5%. The proposed supervised approach can be directly applied to train and evaluate other learning algorithms and data representations. In fact, a most important aspect is that it enables the use of a wealth of legacy pattern recognition algorithms for the sonar CAD/CAC applications of target detection and target classification 相似文献