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991.
根据审美感、实用性和经济性相统一原则 ,对于校园礼仪服装设计规律进行了系统分析 ,从服装构成的三大要素造型、色彩、材料的角度对于该类型服装的具体设计方法进行了探讨 ,并针对中学生校园礼仪服装设计进行分析 ,阐述了校园服装在校园文化中的作用和地位 相似文献
992.
Ding-Yu Peng 《加拿大化工杂志》1990,68(3):473-478
Traditionally, Raoult's law has always been considered to describe the vapor-liquid equilibrium of ideal solutions. This treatment not only is awkward but also is not in complete agreement with the definition of an ideal solution in the sense of the Lewis-Randall rule. In this study, the characteristics of a model system of Raoult's law are analyzed. The analysis is based on the application of the Lewis-Randall rule in which the actual states of the pure components are used as the standard states. It is shown that, in the region where vapor-liquid equilibrium exists, neither the vapor nor the liquid is an ideal solution in the strict sense of the Lewis-Randall rule. 相似文献
993.
本文分析了调水方案决策的多目标性、群决策性特点,研究基于“满意原则”的多人多目标决策模型。重点针对决策者利益的有限冲突性,提出基于协商对策的多人多目标决策模型,并以辽宁省“引细入汤”工程方案决策为例,构筑了由冲突双方和仲裁方组成的三方仲裁局势,并详细阐述模型的求解过程。该模型在满足公平性原则前提下,兼顾了冲突双方及整体利益,具有较强的可操作性和实用性,可以为解决类似的决策问题提供一定参考。 相似文献
994.
Won-Woo Kim & Byoungseung Yoo 《International Journal of Food Science & Technology》2009,44(3):503-509
Rheological properties of acorn starch dispersions at different concentrations (4%, 5%, 6% and 7%) were evaluated under steady and dynamic shear conditions. The flow behaviours of the acorn starch dispersions at different temperatures (25, 40, 55 and 70 °C) were determined from the rheological parameters provided by the power law model. The acorn starch dispersions at 25 °C exhibited high shear-thinning fluid characteristics ( n = 0.23–0.36). Consistency index (K) and apparent viscosity (ηa,100 ) increased with an increase in starch concentration, and were also reduced with increasing temperature. Within the temperature range of 25–70 °C, the ηa,100 obeyed the Arrhenius temperature relationship with a high determination coefficient ( R 2 = 0.97–0.99), with activation energies (Ea ) ranging between 16.5 and 19.0 kJ mol−1 . Both the power law and exponential type models were employed in order to establish the relationship between concentration and apparent viscosity (ηa,100 ) in the temperature range of 25–70 °C. Magnitudes of storage ( G' ) and loss ( G ") moduli increased with an increase in the starch concentration and frequency (ω). The magnitudes of G ' were higher than those of G " over most of the frequency range (0.63–62.8 rad s−1 ). The dynamic (η*) and steady shear (ηa ) viscosities of acorn starch dispersion at 7% concentration follow the Cox–Merz superposition rule. 相似文献
995.
This study adopted an interactional approach to understanding how 2 of the Five-Factor traits, openness to experience and conscientiousness, are related to creative behavior in the workplace. Openness to experience is theorized to result in high levels of creative behavior and conscientiousness is theorized to result in low levels of creative behavior when the situation allows for the manifestation of the trait influences. More specifically, the authors hypothesized that openness to experience would result in high levels of creative behavior if feedback valence were positive and job holders were presented with a heuristic task that allowed them to be creative. The authors also hypothesized that conscientiousness would result in low levels of creative behavior if supervisors engaged in close monitoring and coworkers were unsupportive. The authors tested their hypotheses in a sample of office workers, and 5 out of the 6 hypotheses were supported. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
996.
基于图模型的TextRank算法是一种有效的关键词提取算法,在提取关键词时可取得较高准确度。但该算法在构造图的关联边时,所采用的共现窗口规则仅考虑了局部词汇间的关联,并具有较大随意性与不确定性。针对这一问题,该文提出了一种基于粗糙数据推理理论的改进TextRank关键词提取算法,粗糙数据推理可扩大关联范围,增加关联数据,得到的结果更加全面。结合粗糙数据推理理论中的关联规则,该文提出的算法做了以下改进: 依据词义对候选关键词进行划分;再通过粗糙数据推理对不同分类中候选词间的关联关系进行推理。实验结果表明,与传统的TextRank算法相比,改进后算法的提取精度有了明显的提高,证明了利用粗糙数据推理的思想能有效地改善算法提取关键词的性能。 相似文献
997.
998.
Harald Niederreiter Chaoping Xing 《Applicable Algebra in Engineering, Communication and Computing》2000,10(6):425-432
We establish a general theorem which, given an arbitrary linear code, generates a family of linear codes of larger lengths
and higher dimensions. The proof is based on a representation of the given linear code as a (generalized) algebraic-geometry
code. Examples yielding many optimal linear codes document the power of this theorem.
Received: July 5, 1999 相似文献
999.
Classification and rule induction using rough set theory 总被引:3,自引:1,他引:2
Rough set theory (RST) offers an interesting and novel approach both to the generation of rules for use in expert systems and to the traditional statistical task of classification. The method is based on a novel classification metric, implemented as upper and lower approximations of a set and more generally in terms of positive, negative and boundary regions. Classification accuracy, which may be set by the decision maker, is measured in terms of conditional probabilities for equivalence classes, and the method involves a search for subsets of attributes (called 'reducts') which do not require a loss of classification quality. To illustrate the technique, RST is employed within a state level comparison of education expenditure in the USA. 相似文献
1000.