查询词典 coefficient of association

Using the Pearson correlation coefficient and Spearman rank correlation coefficient, the interspecific association of 13 species in different communities in Beijing mountainous area were investigated, and the niche breadth and niche overlap of 13 species were studied.

应用Pearson相关系数和Spearman秩相关系数检验，研究了北京山区天然林群落13个乔木种群的种间关联性，并对13种植物种群的生态位宽度和生态位重叠进行研究。

Objective To investigate the characteristics of fractional anisotropy and apparent diffusion coefficient of association fiber tracts in patients with amnestic mild cognitive impairment, and to assess the application value of diffusion tensor imaging in differential diagnosis of aMCI and AD.

目的 通过磁共振扩散张量成像探讨遗忘型轻度认知障碍患者联合纤维束FA值和ADC值的变化特点，评价DTI对aMCI的诊断及aMCI与AD鉴别诊断的应用价值。

By using correlation analysis, we are able to calculate the self correlation coefficient of the same characteristic value to achieve the association of current and previous one and the cross correlation coefficient of two different characteristic values, consequently achieve the data association between characteristic values. 3. On the characteristic level, we are trying to fuse the characteristic values from different data source and identify the exact type of the fault.

用同种类多个传感器进行测量，得到的数据以加权自适应估计方法将它们融合处理得出最佳值；对来自异类多个传感器的数据进行最小二乘估计处理将它们融合到一起，完成数据关联和从测量数据估计出它们所反映的特性；通过计算征兆数据的自相关系数能完成同一征兆当前值与过去值的关联，又可以通过计算两个征兆数据的互相关系数完成这两个征兆的关联。

The association of the main principal component obtained from our study and the China human development index reported by the United Nations Development Programme was estimated by the Spearman's rank correlation coefficient.

对中国人类发展数据的分析结果也表明，尽管1990年以来中国各地区在经济、教育和健康方面均取得了重大进步，但三项发展之间存在着严重的不协调，地区发展差距也越来越多地体现为经济发展差距，这些反映了改革开放以来中国各级政府过分强调经济增长而带来的片面、不协调的人类发展。

The association constant of CS/HOBt complex was calculated from the self-diffusion coefficient of HOBt.

通过测量CS与HOBt混合溶液中HOBt的自扩散系数，计算出复合物结合与解离的平衡常数 K 。

According to the phytosociological theories and methods of Braun-Blanquet's school, the regional savanna vegetation of the dry-hot valleys of Yuanjiang river had been investigated. Based on the principle of fidelity degree, the typical 110 releves taken from every sampling stands of the dry-hot valleys were sorted up from below to upper into 15 Associations, then into 5 Alliances, 2 Orders and 1 Class. A synoptic classification system of Class-Order-Alliance-Association was established for the purpose to reflect deeply the characteristics of all syntaxa there in the aspect of plant component and their abundance-dominancy, presence, cover coefficient, life form, growth form, and ecological environment, community structure, species types and so on.

采用Braun-Blanquet植物群落学研究的理论与方法，对云南元江中上游干热河谷分布的植被进行考察研究，把各处取得较典型的110个样地记录按确限度的原则由下而上归类成15个群丛、5个群属、2个群目和1个群纲，建立了元江干热河谷萨王纳植被群纲—群目—群属—群丛分类系统综合表和15个群丛表，以全面深入反映全干热河谷植物群落各级分类单位中各植物种类组成的多优度、存在度、盖度系数、生活型和生长型等特征及其群落结构、生态环境和种型类别。

The association coefficient was taken for the similar degree of amphibians in every two zoogeographical zones.

云南是一个山地区域，是长江、萨尔温江、伊洛瓦底江、湄公河、红河和珠江的发源地。

The fourth part of this paper is the empirical part. Under the guidance of the grey theory, this paper has calculated the correlation coefficient of correlation between exhibition economy and the industries of tourism catering, and so on. Whats more, the author has ordered the size of the correlation: the exhibition economic development has the largest association with tourism industry, followed by retail trade, international tourism, passenger traffic, food service, Post and Telecommunications industry, and aviation passenger traffic.

文章的第四部分是本文的实证部分，根据灰色相关理论，本文计算了旅游、餐饮等行业与会展经济的关联系数和关联度，并对关联度的大小进行了排序，其中与会展经济发展关联度最大的是旅游业，其次是零售业、国际旅游业、客运量、餐饮业、邮政电信业、航空客运量。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐