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991.
讨论了一种特殊的抽象函数空间L2(R,H),把连续小波变换从L2(R)推广到L2(R,H);讨论了由抽象变换函数的积分核产生的重构公式,不仅在弱收敛意义下而且在范数收敛意义下该重构公式成立的条件;得到了使得重构公式存在且成为最简单形式的抽象变换函数的条件;给出了一种寻求使得重构公式成为最简单形式的抽象变换函数的方法. 相似文献
992.
从炭层、灰层、气化剂和生产操作方面提出了煤气炉在高气化强度条件下稳定工况和优化工艺的要领。提出了相应的解决措施。 相似文献
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996.
结构失效模式决定了结构在强震下的抗震性能。该文采用基于可靠度理论的割集方法,对掉层框架结构地震作用下的典型失效模型的失效概率进行评估,并与规则框架结构进行对比,分析了掉层框架结构失效模式的特点。结果表明:掉层框架结构的柱极限剪切失效模式年平均发生概率高于规则结构,且掉层框架结构存在剪切破坏先于弯曲破坏的风险,应采取适当加强措施以满足"强剪弱弯"的设计原则;对掉层结构进行基于年平均概率的柱剪力增大系数分析,建议对掉层结构上接地柱进行抗剪承载力设计时,采用抗震等级提高一级所对应的剪力增大系数,且上接地柱全柱段箍筋应加密布置。 相似文献
997.
"十一五"时期,随着国民经济持续快速发展,我国迅速崛起成为世界能源大国,但大而不强的问题十分突出.在更加复杂严峻的能源供应形势下,必须推动能源生产和利用方式变革,着力结构调整,开始由大到强的转型,才能为"十二五"乃至更长远阶段奠定可持续发展的基础. 相似文献
998.
A large and growing body of evidence from marketing and behavioral economics suggests consumer preferences are not fixed but instead depend on the choice set. Although the idea that context alters perception is not new to psychophysicists or sensory scientists, we suggest that asymmetric dominance may represent a novel and potentially important source of bias in hedonic product testing and food choice research. In a series of six experiments using model systems, commercially available beverages and solid foods, we explored the possibility that asymmetric dominance effects may influence the results of food preference testing. Within a model system (experiments 1-3), we failed to observe evidence of a bias arising from asymmetric dominance. In contrast, when perceptually complex beverages and foods were used (experiments 4-6), we found relative preference was altered by the introduction of an additional product into the choice set. Critically, we found this bias was able to induce a significant preference (experiments 4-5) or make a significant preference disappear (experiment 6). Implications of this potential source of bias are discussed in a context relevant to sensory scientists and product developers. 相似文献
999.
Cokley Kevin O.; Tran Kimberly; Hall-Clark Brittany; Chapman Collette; Bessa Luana; Finley Angela; Martinez Michael 《Canadian Metallurgical Quarterly》2011,4(3):162
Reports an error in "Predicting student attitudes about racial diversity and gender equity" by Kevin O. Cokley, Kimberly Tran, Brittany Hall-Clark, Collette Chapman, Luana Bessa, Angela Finley and Michael Martinez (Journal of Diversity in Higher Education, 2010[Sep], Vol 3[3], 187-199). There are two errors in Table 2 under the RWA heading and the Cog-gender heading. The necessary changes are provided in the erratum. (The following abstract of the original article appeared in record 2010-18201-006.) Factors related to attitudes about racial diversity and gender equity were examined in an ethnically diverse sample of 432 college students (167 European Americans, 83 African Americans, 81 Asian Americans, and 82 Hispanic Americans). In addition to variables of self-interest (i.e., ethnicity, gender, and political views), social ideology (i.e., social dominance orientation, right-wing authoritarianism) and personality traits (openness to experience) were uniquely predictive of attitudes about racial diversity and gender equity. Hierarchical regressions revealed that social dominance orientation most strongly predicted racial attitudes, while right-wing authoritarianism most strongly predicted gender attitudes. Implications for diversity education efforts related to prejudice reduction are discussed. (PsycINFO Database Record (c) 2011 APA, all rights reserved) 相似文献
1000.
Associations between behavioral inhibition and activity of the hypothalamic-pituitary-adrenocortical (HPA) system, a stress-sensitive neuroendocrine system indexed by salivary cortisol, have varied widely across studies. In the current study, we examined the role of peer social experiences in moderating patterns of association between inhibition/risk-aversion and cortisol reactivity. As expected based on previous research, preschool children (N = 165, 78 boys, 87 girls, 3.0–5.0 years) had significantly different social experiences in their preschool classrooms depending on temperament. Highly inhibited/risk-averse children were less socially integrated, less dominant, and less involved in aggressive encounters than both average and highly exuberant/risk-seeking children, but they were no more likely to be peer rejected. Highly exuberant children were more dominant, exhibited anger more often, and had friendships characterized by higher conflict. Cortisol levels fell from fall to spring for average and highly exuberant children but not for highly inhibited children. Unexpectedly, for highly inhibited children, having friends and being more dominant and popular than other highly inhibited children was associated with increasing cortisol levels over the school year. In contrast, highly exuberant children who were less socially integrated than other highly exuberant children maintained higher cortisol levels. Results indicate that the types of social experiences that affect stress-responsive biological systems may differ markedly for highly inhibited and highly exuberant children. (PsycINFO Database Record (c) 2011 APA, all rights reserved) 相似文献