变异系数

Based on the landscape remote sensing mapping,buffer zone analysis and total variation index calculation of landscape structure for two neighbored buffer zones were used to divide the natural landscape and human impacted landscape in Wolong Natural Reserve .

在景观遥感制图的基础上，利用缓冲区分析和相邻缓冲区的景观结构总体变异系数方法对卧龙自然保护区进行了自然景观和人为影响景观的分割研究，并对人为影响景观的空间分布特征进行了分析。

The range of CV was from 3.42% to 35.01% for 15 characters, 6 characters, yield per plant, panicals per plant, spikeletes per panical, filled grains per panical, panical neck length and spikeletes density, had higher value than other traits.

性状的变异系数范围为3.42%~35.01%，单株产量、单株有效穗、每穗总粒数、每穗实粒数、穗颈长短、着粒密度等6个性状居前列。

The difference, relative variation of modular number and mass and their frequency distribution were analyzed between treatments, and within and among structural levels of genet, ramet and tiller in grazing experiment.

在放牧实验中，分别以矮嵩草源株、分株和分蘖层次为单位，对其构件单元的数量和生物量、变异系数、频率分布在处理间的差异和相对变异性进行分析；在模拟放牧实验中，分别就无性系内刈割和未刈割部分从这3个层次上比较了构件数量和生物量在处理间的差异和相对变异性，所得结果如下

Results indicate that Alpine meadow is higher than Alpine shrubland in

结果表明，草甸样地的粘粒含量、P_、N_、ORG、P_、N_、K_的含量都高于灌丛样地，且两样地速效养分差异极其显著，但草甸样地土壤的ORG、N_、K_的变异系数却明显小于灌丛样地，特别是K_的CV值，灌丛样地比草甸样地高出了53.37%；相关分析还表明，相对于草甸，灌丛样地中各养分元素之间的相关性明显增强。

Test result makes clear, different intensity grade abandons the stuff of second birth wide market that gets after concrete mix up, of the compressive strength of concrete of second birth of different origin of compressive strength; that will reduce second birth concrete significantly all be worth concrete of singler source second birth to reduce, and variance and coefficient of variation increase; to use normal school model to be opposite of compressive strength of concrete of different origin second birth distributing undertook examining, use Monte-Carlo imitate method farther test and verify should distributing the rule.

试验结果表明，不同强度等级废混凝土混和后得到的再生粗集料，将显著降低再生混凝土的抗压强度；不同来源再生混凝土抗压强度的均值较单一来源再生混凝土减小，而方差和变异系数增大；采用正态分布模型对不同来源再生混凝土抗压强度的分布进行了检验，利用Monte-Carlo模拟方法进一步验证了该分布规律。

Results: good standard linear curve, r = 0.9998; minimum checking limited to: 0.28μg formaldehyde, or 1.4μg sodium formaldehyde sulfoxylate; Variation coefficient 2.0%.

结果：标准曲线线性良好，r = 0.9998；最低检出限为：0.28μg甲醛，或1.4μg吊白块；变异系数为2.0 %。

The frist 3 characters based coefficient of variation are rate of two kernel (56.18%), single fruit weight (55.82%) and titratable acid 55.49

变异系数最大的前3个性状为：双仁率(56.18％)、单果重(55.82％)和可滴定酸55.49

Results The within-run and between-run coefficient of variation of total bilirubin by vanadic acid oxidation assay were 1.58% and 2.94%.The within-run CV of direct bilirubin were 1.23% and 2.7%. The average rate of recovery of TBil and DBil were 101.1% and 100.1%.

结果 钒酸氧化法测定血清总胆红素批内变异系数为1.58%，批间CV为2.94%；血清直接胆红素批内CV为1.23%，批间CV为2.7%；平均回收率TBil为101.1%，DBil为100.1%。

The fourth part establishes a comprehensive evaluation model match with macro-microeconomic environment of objective dynamic weight .The financial indexes of SSE 50 listed companies are supplied from financial statement of 2004. And the financial indexes are choused with the total index methods of the coefficient variation and Wang-model.

第四部分以上证50指数股上市公司2004年度报表所提供的诸多财务指标为依托，结合变异系数法和汪氏模型筛选出所需财务指标，并配以能与宏微观经济环境相匹配的客观动态权数体系建立上市公司综合评价模型。

Author was menstruated content of boron and researched the status of lack of Boron and researched relativity of its Influencing facto, the results showed that the average content of available boron in the yellow soil was 0.39±0.27 mg/kg, 80 percent of its was under 0.5mg/kg which was lack for boron and 17.44 percent of its was under 0.2mg/kg which was especially lack for boron; The distribute frequencies of available boron contents of yellow soils in Chongqing was dispersedly, its range of 0.07mg/kg to 1.99mg/kg. The diversity of different zoology area was distinct. The result of pertinence analyses showed that available boron contents had correlativity with the pH(r=0.181** n=281) and CEC（r=0.124** n=281 and It had correlativity with Organic matte When the content of organic matte is high; in addition, soil granule、clime was the Influencing factor of availability of boron in Yellow Soils in Chongqing.

笔者通过调查取样对重庆市黄壤硼的含量进行测定并分析了缺硼的程度，对其影响因素进行了相关性分析，研究结果表明：重庆市黄壤有效硼的平均含量为0.39±0.27mg/kg，其中近80%的土壤样品有效硼含量低于0.5mg/kg，属于低硼或缺硼土壤，还有17.44%的土壤样品有效硼含量低于0.2mg/kg，属于极度缺硼的土壤；而有效硼含量的分布频率比较分散，变幅较大，从0.07mg/kg~1.99mg/kg，变异系数达到69.41%，不同生态类型区土壤有效硼含量的差异十分明显；而相关性分析结果表明：土壤有效硼与土壤pH值(r=0.181** n=281)和CEC（r=0.124** n=281呈正相关，在有机质含量较高的条件下与其相关性也较为显著（r=0.347** n=90，而土壤质地以及气候也对重庆市黄壤硼的有效性有很大的影响

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。