Ye L.,National University of Defense Technology |
Zhou G.,PLA Naval Command College |
Yang H.,National University of Defense Technology |
Montisci G.,University of Cagliari
Journal of Electromagnetic Waves and Applications | Year: 2014
Accurate computation of the spatial-domain mixed potential Greenâ€™s function (MPGF) in cylindrically stratified media is achieved by a judicious cooperation of two recent works on the same topic. An improved procedure is devised to provide accurate values of the MPGF both in the near and far field, including the axial line region. A numerical approach based on the generalized pencil-of-function method is applied to eliminate the axial line problem, and the rational function fitting method is employed to improve accuracy and stability in the far field. As a result, a robust and efficient method is developed, and good accuracy is achieved both in the near and far field, and along the axial line. © 2014 Taylor and Francis.
Zhang L.,Nanjing General Hospital |
Mao J.-F.,PLA Naval Command College |
Wu X.-N.,PLA University of Science and Technology |
Bao Y.-C.,Shanghai University
Academic Journal of Second Military Medical University | Year: 2014
Objective: To observe the possible bias in Graybiel's scoring system caused by change of complexion and sweating for grading of motion sickness in hot-humid environment, so as to make improvement to the system. Methods: A total of 567 subjects received Collis rotating chair tests in room temperature environment, hot temperature environment, and hot-humid environment. The severity of motion sickness was graded by Graybiels scoring system. Paired designwas done among 4 groups (calculated with pallor and sweating, no pallor, no sweating, and no pallor no sweating). Results: Graybiel's scores were significantly different under3 different environments, either calculated with pallor and sweating, or without pallor, without sweating, or without both (P<0.01). The corresponding grades of Graybiel's score were also significantly different when calculated without sweating and without both pallor and sweating, but not when calculated without pallor. Conclusion: Our findings suggest that changes of complexion should not be considered when calculating Graybiel's score in hot-humid environment so as to simplify the evaluating process.