排序方式： 共有118条查询结果，搜索用时 15 毫秒
21.
SAT问题(可满足性问题)是计算机科学的核心问题,研究SAT问题的方法很多,利用极小不可满足公式的性质来研究SAT问题是近几年兴起的一个热点研究方向. 本文主要利用1(,)*-消解和分裂方法研究了差为2的碰撞极小不可满足公式集()2(MUHIT-)的结构和复杂度.此前,只有G.Davydov, I.Davydova 和H.Kleine Büning对)1(MU和)2(MU的结构和复杂度得出了较好的结果. 相似文献
22.
元杂剧婚恋关系中女性形象的复杂性及其成因 总被引：1，自引：0，他引：1
刘代霞 《贵州教育学院学报》2005,21(1):50-54
元杂剧婚姻恋爱关系中的女性形象，具有复杂性和多面性，既自由主动又忠贞专一，既富有斗争精神又具有妥协性，既富有理想色彩又具有现实性。具有复杂性和多面性的原因，在于元代女性生存环境的恶劣和元代社会意识形态中性别观念的多元化以及元杂剧作家思想观念的复杂化。 相似文献
23.
罗曼予 《南宁职业技术学院学报》2006,11(2):108-111
复杂性思维是认识复杂事物的思维方式,是科学思维的时代特征。作为跨学科的方法论,复杂性思维同样也适用于社会科学、人文科学。社会系统是典型复杂系统,党的十六大提出“构建社会主义和谐社会”,就是要使中国社会这个复杂的大系统保持和谐发展的态势。广西地处中国南疆,无论是地理条件、经济状况、文化构成都具有一定的代表性,用复杂性思维指导和谐广西的建设,追求系统整体优化,达成广西政治、经济和文化的全面和谐,对构建社会主义和谐社会具有重要的意义。 相似文献
24.
给出了一种多位自收缩序列,并解决了多位自收缩序列的周期下界,线性复杂度,最后构造了新的多位self-shrinking序列模型. 相似文献
25.
令G一个阶为n的有限群,复数域上的群代数同构于准对角矩阵代数．每一个这种同构叫作复数域上一个离散的傅立叶变换DFT,它是由两两不同构的不可约表示组成．计算一个群的常表示是一个相当困难的问题,1994年Baum和Clausen给出了计算超可解群DFT的算法,它的复杂度为O（p│G│Iog│G│）,2003年Clausen和Muller给出了可解群的一个算法,它的复杂度为O（p│G│^2 log│G│）．主要对有限交换群来进行讨论,首先给出计算交换群的不可约表示的算法,并对算法进行分析,接下来计算这个算法的复杂度,计算的结果为O（│G│）． 相似文献
26.
This article considers the challenge of sustainable change and development in education from the perspective of complexity theory. Complexity theory’s concept of emergence implies that, given a significant degree of complexity in a particular environment, new properties and behaviours emerge that are not necessarily contained in the essence of the constituent elements, or easily able to be predicted from a knowledge of initial conditions. These concepts of emergent phenomena from a critical mass, associated with notions of lock-in, path dependence, and inertial momentum, contribute to a perspective on continuity and change that indicates what conditions might need to be in place for the emergence of sustainable, positive, system-wide change and development in education. 相似文献
27.
教育技术专业人员如何创新?——2009全国教育技术学博士生论坛上的讲话 总被引：1，自引：0，他引：1
当前教育信息化正面临严峻的挑战,文章分析了产生这场严峻挑战的根本原因。在此基础上,作者希望广大从事教育技术理论与应用研究的专业人员能以创新精神来迎接这场挑战,为此要敢于创新和善于创新——要做到敢于创新需要端正两种态度,要做到善于创新需要提高四个方面的认识;作者对于哪两种态度和哪四方面的认识以及如何端正两种态度、如何提高四个方面的认识都作了较为深入的分析。 相似文献
28.
从线性到非线性:企业成长理论回顾、现状与展望 总被引：2，自引：0，他引：2
从最初企业是生产函数、契约到企业是复杂适应系统的认识深化,企业成长的理论研究开始从线性向非线性过渡。本文以企业成长理论从线性到非线性转变为主线,梳理企业成长理论的演进脉络。通过对众多理论之间的内在逻辑关系及其适用边界和应用性分析发现,非线性在企业成长过程发挥了主导作用,并指出从内生和外生两方面互动的视角建立非均衡、非线性有机统一的企业成长机制,可对企业成长规律给出更合理的理论解释。 相似文献
29.
We find that Teacher Education attracts, in addition to those outgoing students who are at ease in front of a group of people, a number of student teachers who are often quiet, reserved, shy, or not at all comfortable being the center of attention. Many times these aspiring teachers have gifts and talents that are not readily apparent, yet comparable to their more outgoing peers. Often, they are caring, passionate, and reflective. 相似文献
30.
Robert J. Sonstroem Kenneth P. Kampper 《Research quarterly for exercise and sport》2013,84(4):685-694
Abstract During the first ten days of the academic year the Physical Estimation and Attraction Scales (PEAS) and Bialer's Locus of Control Scale were administered to seventh and eighth grade middle school males. Subsequently, calls were issued for the fall sport season (flag football, cross-country). Stepwise discriminant analysis produced a function containing Attraction first and Estimation second, which accurately predicted athletic participation, canonical r = .35 p < .001. Use of smaller, previously factored collections of PEAS items improved the prediction, canonical r = .40, p < .001. Prediction of a single, more specific activity, cross-country, by means of the more specific factor scores produced a canonical coefficient of .47, p < .001. PEAS Factor 5, referring primarily to activities of running and hiking, developed the largest relationship with cross-country participation of any study variable. Control did not enter either of these two equations. No significant relationship was found between any study variable and adherence (remaining on the cross-country team for the complete season). It was concluded that PEAS variables are capable of predicting initial exercise involvement. In terms of developing optimal psychometric predictions of exercise recruitment and adherence, it is recommended that attitude statements be developed which are more specific and congruent to corresponding desired behaviors. 相似文献