主成分分析方法用于体育评分

运用主成分分析方法进行体育评分，是对体育教学、科研中多项观测指标综合评分的合理性作了有益的尝试。介绍的方法能使体育中的多项观测指标的综合评分更趋于客观、合理化。     

论高等学校"双语教学"的师资队伍建设问题

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。     

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

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.     

运动免疫增强补剂的研究现状与展望

从运动、营养与免疫相互关系角度出发,对近几年各种增强运动免疫的运动营养补剂的研究情况进行归纳和总结,在此基础上,预测今后运动免疫营养补剂的发展前景.     

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

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.     

腺药珍珠菜挥发性成分分析

采用气质联用分析仪分析测定了腺药珍珠菜中56个挥发性组分,其中醚萃取液挥发性组分主要包括亚麻油酸乙酯、2,6十六烷基-1（＋）-抗坏血酸酯、6,9,12,15-二十二碳四烯酸甲酯及棕榈酸乙酯;乙酸乙酯萃取液挥发性组分主要有异佛尔酮衍生物、环氧化红没药烯、富马酸二丁酯及阿魏酸等。     

含DMPP硫硝铵不同基追肥比例对小青菜硝酸盐累积及品质的影响

采用土培试验对含硝化抑制剂DMPP(3，4-二甲基吡唑磷酸盐)硫硝铵(ASN)氮肥(简称ASN DMPP)不同基追肥比例对小青菜硝酸盐累积及营养品质的影响进行了探讨．结果表明，等氮量(每千克土用0．5g氮)施用条件下基肥75％、追肥25％的基追肥比例不仅可提高蔬菜产量、降低硝酸盐含量，还可提高Vc、氨基酸、Zn、N、K含量，改善了蔬菜品质。     

E-Government readiness index: A methodology and analysis

E-Government has received significant attention as digital technologies transcend private businesses and serve as a basic source of transformation in government functions. One most notable project is the United Nations Public Administration Network (UNPAN) that assesses the e-Government readiness of the 192 member nations according to a quantitative composite index involving website assessment, telecommunication infrastructure, and human resource endowment. However, the UNPAN index, though rich in depth and breadth of data collection, relies on a method that is a simple mathematical average of the values of the variables measured. This paper revisits the UNPAN index and proposes alternative indices based on principal components analysis (PCA). Using the UNPAN survey data, four different versions of the index are presented and the resulting rankings of the nations are examined vis-à-vis the existing ranking. The theoretical and policy implications of the proposed methodology and its results are discussed.     

国外职业兴趣构成要素与模型理论研究探析

从兴趣研究的理性回归,简述国外学者对职业兴趣构成要素的研究过程,着重探讨不同职业兴趣模型理论的提出,并对国外职业兴趣要素与模型理论的应用进行解析。     

国际商务专业学生跨文化能力培养策略

文章探讨经济全球化背景下国际商务领域跨文化能力的定义及其构成要素,提出国际商务领域的跨文化能力的培养策略:明确跨文化教育的具体目标、搭建多位一体的跨文化教育平台、创新跨文化教育内容、强化跨文化交际实践,以增强大学生的跨文化敏感性、宽容性及处理文化差异的灵活性,提高他们的跨文化能力,适应我国经济国际化的需要。