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51.
针对磁约束聚变等离子体边缘湍流中非线性能量传递过程的问题,开发了数据分析程序。该程序基于数字谱分析技术来求解波耦合方程,进而计算与三波相互作用相关联的线性和非线性耦合系数以及能量转移。介绍了算法设计和程序开发的主要思想,并对程序进行了仿真测试。然后应用该程序分析了反场箍缩装置实验的一次放电实验数据,观察到湍流之间的波耦合和能量级联现象,发现或证实了聚变等离子体湍流激发与增长的一种内在机制。 相似文献
52.
The goal of the Ministry of Education's "Top Talent Training Program" is to train top innovative talents for China and prepare them to be the leading figures in the field of chemical research. This paper summarizes the author's three attempts to reform organic chemistry teaching in the "Top Talent Training Program"; including (1) to present the report of the minireview of organic chemistry as a true academic report; (2) to stimulate students' interest by practical comprehensive structural determination of organic compounds; (3) to create more active learning atmosphere through displaying interesting research stories and new research directions. We also discussed how to stimulate the students' interest in scientific research through these three teaching reforms. 相似文献
53.
Dines Bjørner 《BIT Numerical Mathematics》1970,10(4):415-442
Let denote a conventional flowchart. Any algorithm can be represented by a flowchart. If action nodes in call then is a recursive flowchart. We show how to decompose arbitrary non-self-modifying programs into structure and atomic parts. We specifically give the synthesis procedure for a controller . can serve as the only sequencer in an execution of . If is recursive then is a pushdown machine, otherwise is a finite state machine. The next-state functionf and the output functiong of represent respectively all of the structure-, i.e. the programmer-oriented-, and all of the atomic-, i.e. the data-oriented-, parts of .f defines the flow or pattern of computations andg the actual transformations or operations on data. Thus we construct and analyze programs by constructing and analyzing their sequencers . 相似文献
54.
Nicholas I. M. Gould 《Mathematical Programming》1985,32(1):90-99
We present practical conditions under which the existence and uniqueness of a finite solution to a given equality quadratic program may be examined. Different sets of conditions allow this examination to take place when null-space, range-space or Lagrangian methods are used to find stationary points for the quadratic program.This research supported in part by the Natural Sciences and Engineering Research Council, Canada. 相似文献
55.
Jong-Shi Pang 《Mathematical Programming》1977,13(1):360-363
LetK be the class ofn × n matricesM such that for everyn-vectorq for which the linear complementarity problem (q, M) is feasible, then the problem (q, M) has a solution. Recently, a characterization ofK has been obtained by Mangasarian [5] in his study of solving linear complementarity problems as linear programs. This note proves a result which improves on such a characterization.Research sponsored by the United States Army under Contract No. DAAG29-75-C-0024 and the National Science Foundation under Grant No. MCS75-17385. 相似文献
56.
介绍了对Perkin-Elmer公司生产的DSC—2C差示扫描量热仪数据处理站专用计算机原程序进行修改的工作,并与通用微机联用,改进了原数据处理站的输出方式,扩展了数据处理功能。 相似文献
57.
Armin Hemmerling 《Mathematical Logic Quarterly》2001,47(1):67-92
Based on the computation mode introduced in [13], we deal with the time complexity of computations over arbitrary first‐order structures.The main emphasis is on parameter‐free computations. Some transfer results for solutions of P versus NP problems as well as relationships to quantifier elimination are discussed. By computation tree analysis using first‐order formulas, it follows that P versus NP solutions and other results of structural complexity theory are invariant under elementary equivalence of structures. 相似文献
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This paper mainly introduces the laboratory course platform "Enhanced Experiments in Basic Chemistry" of its basic framework, experimental content design, dynamic textbook construction and teaching practice, which is particularly designed for top talented chemistry-majored students in Xiamen University. In order to provide the reference experience for the reform of chemistry laboratory teaching in colleges and universities, and to provide reference for the implementation of "Top Talent Training Program of Chemistry" 2.0 in the future. 相似文献