共查询到20条相似文献,搜索用时 31 毫秒
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本文说明了"饮酒与驾车"问题的命题动因,以及面向现实生活的工作方向。针对参赛论文的各种不足之处,着重讲述了数学模型的一般属性和模型假设的重要地位。 相似文献
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现实生活的数学描述-饮酒与驾车 总被引:1,自引:0,他引:1
本文说明了"饮酒与驾车"问题的命题动因,以及面向现实生活的工作方向.针对参赛论文的各种不足之处,着重讲述了数学模型的一般属性和模型假设的重要地位. 相似文献
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Amar Dev Amar Senior Member Iie Jatinder N. D. Gupta Senior Member Iie 《IIE Transactions》1986,18(1):16-25
This paper compares and contrasts the use of simulated versus real data in testing the efficiency of scheduling algorithms. Five hypotheses, formulated to evaluate two important measures of algorithm efficiency, viz., CPU time and the number of iterations, are tested on over one hundred problems drawn from different sources. On the basis of these empirical results, it is shown that: (1) the real problems are easier to solve than the simulated ones; and (2) the Natural Order heuristic is more effective on real problems than simulated ones. Implications of these results for testing the efficiency of algorithms are discussed. 相似文献
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《Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment》1986,242(3):501-506
Spectrum analysis in a real time environment is achieved in a recently developed instrument. All incoming pulses are digitized and digital windows set to define up to 50 regions of interest (ROIs). Up to 20 outputs (analog, relay, digital), defined by combining the count rates of ROIs and standard mathematical functions, are recalculated as frequently as once per second. User defined time response and wide range of smoothing functions allow the outputs to be selected according to the measurement requirements. The characteristics of a number of smoothing functions are analyzed and compared. Examples are given of high precision radioactivity measurements in dynamic environments. 相似文献
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E. Wolynec 《Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment》1989,280(2-3):358-364
Electrodisintegration cross sections are related to the corresponding photonuclear processes through virtual-photon spectra. A brief review of virtual-photon theory is presented. Calculations of DWBA virtual-photon spectra for finite nuclei are compared with experimental results. The multipole decomposition of electrodisintegration cross sections using these spectra is discussed and several experimental results are presented. A brief review for the bremsstrahlung cross section is also presented. 相似文献
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