The article deals with the minimum-time running problem. The time of covering a given distance is minimized. The Hill-Keller model of running employed is based on Newton's second law and the equation of power balance. The problem is formulated in optimal control. The unknown function is the runner's velocity that varies with the distance. The problem is solved applying the direct Chebyshev's ps...

Randomized algorithms for deciding satissability were shown to be eeective in solving problems with thousands of variables. However, these algorithms are not complete. That is, they provide no guarantee that a satisfying assignment, if one exists, will be found. Thus, when studying randomized algorithms, there are two important characteristics that need to be considered: the running time and, e...

it is important for people to improve cognitive and motor performance. the purpouse of this study was to investigate the effect of running on treadmill in spatial memory and learning and motor performance. 24 albino-wistar healthy male rats were randomly divided into control and activity groups. activity group ran 7 days on treadmill (speed 22m/min 30 minutes a day). after the end of activity p...

In this paper, the physical phenomenology of electromagnetic induction (EMI) sensors is reviewed for application to land mine detection and remediation. The response from time-domain EMI sensors is modeled as an exponential damping as a function of time, characterized by the initial magnitude and decay rate. Currently deployed EMI sensors that are used for the land mine detection process the re...

The accuracy in determined energy consumption and running time of trains, by means of computer simulation, is dependent upon the various models used. This thesis aims at developing validated models of running resistance, train and of a general driver, all based on full scale testing. A partly new simple methodology for determining running resistance, called by energy coasting method is develope...

A professor forced into retirement by a severe disability finds his personal care assistants essential. But he may not be able to afford their help much longer—and he faces going on Medicaid and possibly becoming institutionalized. Chronic Care Disability Multiple Sclerosis Personal Care Assistant Long-Term Care It’s 9:28 p.m. Serge punches the code into the digital lock and enters my front doo...

School of Mathematics, Georgia Tech, Atlanta, GA 30332-0160 USA [email protected] Département de mathématiques et de statistique, Université de Montréal, Montréal QC H3C 3J7, Canada [email protected] Department of Mathematics, University of Pennsylvania, 209 S. 33rd Street, Philadelphia, Pennsylvania 19104, USA [email protected] School of Mathematics and College of Computing, G...