供应链柔性组件及特性     

肖久灵  汪建康 《上海海事大学学报》2006,(Z1)

从运营系统、物流过程、供应网络、组织设计和信息系统等5个方面分析供应链柔性组件及其特性,以此促进企业改善顾客满意程度和提升供应链价值．  相似文献   

对西部大开发中体育产业化基本问题的再认识   总被引：3，自引：1，他引：2  

黄晓华  许惠玲 《体育学刊》2002,9(4):17-19

体育在西部大开发中有着特定的任务和作用。体育产业化是市场经济条件下西部大开发中体育发展的必由之路。市场经济体制下西部大开发的本质是推进经济发展的市场化，而体育产业化可以促进体育增长方式的转变，提高体育的整体效益，进一步优化体育的经济结构和促进体育市场经济体制的建立。体育产业化的实质在于发展体育市场经济，构成新的体育产业体系。体育产业具有其基本特征。  相似文献   

影响篮球比赛快攻战术成功率主要因素分析   总被引：26，自引：0，他引：26  

盖建武 《中国体育科技》2003,39(4):41-44

通过对全国高等体育院校、高等师范院校和体育科研单位的 2 9名篮球专家进行问卷调查 ,经统计学处理 ,得出了影响篮球快攻战术成功率的主要因素及其所包含的子因素 ,找出了影响快攻战术成功率的各主要因素的重要程度 ,为篮球运动战术的理论和训练提供依据。  相似文献   

Hierarchical clustering of a Finnish newspaper article collection with graded relevance assessments     

Tuomo Korenius  Jorma Laurikkala  Martti Juhola  Kalervo Järvelin 《Information Retrieval》2006,9(1):33-53

Search facilitated with agglomerative hierarchical clustering methods was studied in a collection of Finnish newspaper articles (N = 53,893). To allow quick experiments, clustering was applied to a sample (N = 5,000) that was reduced with principal components analysis. The dendrograms were heuristically cut to find an optimal partition, whose clusters were compared with each of the 30 queries to retrieve the best-matching cluster. The four-level relevance assessment was collapsed into a binary one by (A) considering all the relevant and (B) only the highly relevant documents relevant, respectively. Single linkage (SL) was the worst method. It created many tiny clusters, and, consequently, searches enabled with it had high precision and low recall. The complete linkage (CL), average linkage (AL), and Ward's methods (WM) returned reasonably-sized clusters typically of 18–32 documents. Their recall (A: 27–52%, B: 50–82%) and precision (A: 83–90%, B: 18–21%) was higher than and comparable to those of the SL clusters, respectively. The AL and WM clustering had 1–8% better effectiveness than nearest neighbor searching (NN), and SL and CL were 1–9% less efficient that NN. However, the differences were statistically insignificant. When evaluated with the liberal assessment A, the results suggest that the AL and WM clustering offer better retrieval ability than NN. Assessment B renders the AL and WM clustering better than NN, when recall is considered more important than precision. The results imply that collections in the highly inflectional and agglutinative languages, such as Finnish, may be clustered as the collections in English, provided that documents are appropriately preprocessed.  相似文献   

DII、esp@cenet、CA在科技查新专利检索中的应用   总被引：1，自引：0，他引：1  

邓勇  张娴 《图书情报工作》2004,48(7):82-85

详细分析德温特专利创新索引(DII)、欧洲专利系统(esp@cenet)、美国化学文摘(CA)3种检索工具对专利文献的报 道特征与检索功能;通过检索实例对3者应用于科技查新专利检索的优势与不足进行评析,并就具体应用方法提出相关建 议。  相似文献   

Components of Variance of Scales With a Bifactor Subscale Structure From Two Calculations of α     

David Andrich 《Educational Measurement》2016,35(4):25-30

Since Cronbach's (1951) elaboration of α from its introduction by Guttman (1945), this coefficient has become ubiquitous in characterizing assessment instruments in education, psychology, and other social sciences. Also ubiquitous are caveats on the calculation and interpretation of this coefficient. This article summarizes a recent contribution (Andrich, 2015) on the use of coefficient α which complements these many caveats. It shows that in the presence of a simple bifactor structure of a scale where unique components of variance are homogeneous in magnitude, three components of variance and the common latent common correlation among the subscales can be calculated from the ratio of two calculations of α, one at the level of the items, the other at the level of the subscales. It was suggested that these two ready calculations and their interpretation, and the reporting of all four indices in the analysis of scales with a subscale structure, would reduce the misinterpretation of this coefficient. An illustrative example of the application of the calculations is also shown.  相似文献   

论翻译能力的构成因素     

戴忠信  刘军 《金陵科技学院学报(社会科学版)》2005,19(2):78-82

本从个体翻译过程的角度分析了个体翻译能力的构成因素，其目的是为翻译教学提供必要的理论依据。个体的翻译能力主要由翻译才能、翻译语能、翻译熟能和翻译智能四个方面的能力构成。翻译才能指处理语言所表达的意义的能力；翻译语能指处理语言外在形式的能力；翻译熟能与翻译过程的自动化速度有关，而翻译智能则与理解交际意图和逻辑推理能力有关。  相似文献   

刍议农业可持续植保与有害生物的综合治理     

何美仙  许松琴  唐建勋 《金华职业技术学院学报》2001,1(4):34-36

本文在介绍可持续植物保护概念的基础上，分析了可持续植保中有害生物综合治理在我国的发展以及存在的问题，提出了实现有害生物综合治理的措施和方法，同时特别强调加强生物农药及其它非化学防治方法的推广和利用，减少化学农药的使用，减轻生态环境的压力。  相似文献   

论高等学校"双语教学"的师资队伍建设问题   总被引：5，自引：0，他引：5  

胡敏华  刘寅 《黄山学院学报》2006,8(4):158-161

通过对双语教学师资的特殊素质要求进行分析,提出了集专业理论素养、外语综合应用能力、先进教学理念与方法以及和谐的科学人文精神为一体的综合性师资素质构件;进而提出了包括外语教师专业化、正规培养基地、外部引进以及跨地共享合作等途径的多维性建设思路。  相似文献   

食用茉莉花香味成分的GC/MS分析   总被引：6，自引：0，他引：6  

王海琴  刘锡葵  柳建军 《昆明师范高等专科学校学报》2006,28(4):11-13

采用水蒸气蒸馏-乙醚萃取法对云南引种食用茉莉花中芳香性成分进行了提取，并用气相色谱-质谱联机技术对其中化学成分进行分析鉴定．共鉴定出46种芳香性有机成分，占茉莉花挥发油提取物总含量的99．9005％．通过对食用茉莉花芳香性成分的分析，为茉莉花香精香料的开发提供了依据．  相似文献