The pca results indicated that the characteristics of length , breadth , the angle of leaf basal in lamina and the characteristics of calyx - tube , corolla dimension and inflorescence pedicel in the flower were the main reasons leading to the morphological variations , and the f - test of single factor variance analysis verified the conclusion 主成分分析显示，叶部特征的长度、宽度、叶基夹角等，以及花部特征的花兽筒、花冠幅、花序总梗等是造成不同居群野生早樱表型差异的主要因素，单因素方差分析也印证了这一结论。
The study examines the administrative values in civil servants , using the methods of interview , questionnaires , exploratory factor analysis , confirmatory factor analysis , variance analysis , correlation , regression etc . from the sample of fifteen units in five cities ( n = 223 ) . we find that : firstly , the reliability and validity of the questionnaire about the administrative values in civil servants is excellent 本研究综合运用了文献分析法、访谈法、问卷调查法,以河南省部分地市、部分党政部门的公务员为被试,由自编公务员行政价值观量表,初步探讨了公务员行政价值观的结构维度及其与工作绩效的关系和不同公务员在行政价值观及子维度上的差异。
The results of variance analysis about the related characters of defy , gannong no . 3 and length ear showed that each character of long ear including ear length , flowers , number of pod and seeds was significantly different from the same character of gannong no . 3 and defy , and the ear length was the main factor influencing the production of alfalfa 对长穗苜蓿和德福、甘农三号穗长、小花数、荚果数和种子数方差分析表明：长穗苜蓿的穗长、小花数、荚果数和种子数分别和德福、甘农三号的穗长、小花数、荚果数和种子数差异达到极显著水平，穗长是苜蓿种子高产的主要影响因子。
The results of variance analysis showed that there was no significant difference in the same organ of soybean varieties , but the difference was highly significant in different organs of same variety . the content of isoflavones in organs on the ground was much more than that of underground at the stage of coming out , and isoflavones in cotyledon was much more than in other tissues in the stage of seedling 营养生长期异黄酮的分布存在组织特异性而无种属特异性，各组织间的差异达到极显著水平：在大豆出苗期，地上部分的异黄酮含量远高于地下部分；幼苗期子叶中异黄酮远高于其它部分；壮苗期和盛花期，叶片中异黄酮的含量远高于别的组织。
Statistic analysis of apt model and research of application in china ' s stock market li jiao - rui abstract in the course of finance mathematics , capm , which bases on expectation - variance analysis , describes a market determined mechanism of the capital asset profits . when capital market reaches balance . it interprets that why different portfolios has different results 在金融数学中，建立在均值?方差分析基础上的capm刻画了在资本市场达到均衡时，资产收益的一个市场确定机制，它解释了为什么不同的证券会有不同的回报率。
Basing on the different study methods as interviewing , questionnaire and experiment , the subjects analyzed the dates collected from the male and female college students of different majors , different grades and different universities ( the size of testees " sample is 635 ) with different statistical ways as the reliability and validity of the self - developed scales , also methods of variance analysis , correlation , efa , cfa , regression , sem etc . major findings are as follows : ( 1 ) questionnaires of interpersonal interaction behavior of college students can be put into use , also does the questionnaires of attitude towards intercourse on internet 研究运用访谈法、问卷法、实验法，以武汉市不同大学不同专业不同年级共635位男女大学生为正式被试，使用方差分析、相关分析、回归分析、探索性因素分析、验证性因素分析等统计方法对所收集的数据进行分析，对自编的人际交往行为问卷、网上人际交往态度问卷进行项目分析、信效度检验，探索变量之间的关系，结果发现： ( 1 )自编问卷能被用来参与正式统计。
The killing effect on oncomelania hupensis by lixivium of pterocarya stenoptera , nerium indicum , rumex japonicus and their mixture was studied . differences of the snails mortality were studied also . the three kinds of plant material could kill the snail effectively both in spring and in autumn . but the mortality was different when the experiment is done in different seasons or with different lixivium . the effect in spring was better than that in autumn . n . indicum was the most effective among the three kinds . the effect by mixture was better than that by unitary material , and the effect by the mixture of the three kinds was better than that by two kinds . the variance analyses showed that the experiment could be modified , and some ingredients concentration in mixed lixivium could be reduced . the experiment was valuable in enhancing the power of killing the snail and saving plant material 对枫杨、夹竹桃和土大黄以及它们的组合水浸液的灭螺效果作了比较研究,结果表明: ( 1 )灭螺效果均随水浸液浓度的增高而增强; ( 2 )这3种植物材料及其组合水浸液的灭螺效果都是春季比秋季好; ( 3 )组合水浸液的灭螺效果比单一植物材料水浸液的灭螺效果好; ( 4 )方差分析的结果说明植物材料组合水浸液灭螺在保证灭螺效果的前提下,还可以适当降低组合水浸液中的浓度.以上结论对提高植物材料的灭螺效率和节省植物材料的使用量有着重要的意义,同时也为组建植物灭螺群落提供了有益的参考
Abstract : on the loess plateau , water is the main limiting factors for vegetation growth . root distribution characters have special ecological meaning as it reflected the utilizations of trees to the environments . even - aged stands of robinia pseudoacacia on slope lands facing south and north were selected as sampling plots for root distribution investigation . investigatiing results showed that indicated that on all sites , root biomass decreased with depth , and the distribution depth of fine root was deeper than that of coarser root . the results of variance analysis indicated that there were great differences in root biomass among different diameter classes , and coarser root was the main sources of variance , and the root biomass , especially fine root ( < 3mm ) biomass on northern exposition sites was bigger than that on southern exposition sites . analysis of the vertical root distribution parameters , root extinction coefficient , indicated that the value of on northern exposition was more than 0 . 982 , while the value of on southern exposition was less than 0 . 982 , which indicated that the vertical root distribution depth of robinia pseudoacacia on southern exposition was deeper than that on southern exposition . and the distribution depth of fine roots ( < 1mm ) was deeper than that of thicker roots ( < 3mm ) , which was in favor of the uptake of water and nutrients from deeper layers , helped the trees to adapt the arid environment , and promoted the growth of the upper parts of the tree 文摘:在中国西北黄土高原地区,水分是树木生长发育的主要限制因子.根系分布特征由于反映了树木对环境条件的利用程度而具有更加特殊的生态意义.本研究选择阳坡和阴坡不同立地上年龄一致的刺槐林调查了根系分布特征.根系垂直分布特征的调查结果表明,在所有立地上,根系生物量随着深度的增加而降低,其中细根的分布深度大于粗根的分布深度.方差分析结果表明:不同立地上不同径级根系的分布特征也有明显的差别,粗根是差异存在的主要原因,阴坡立地上的根系生物量,特别是细根生物量大于阳坡立地上的.对根系消弱系数的分析结果表明,阴坡立地上的根系消弱系数大于0 . 982 ,而阳坡立地上的根系消弱系数小于0 . 982 ,说明阴坡立地上刺槐根系的生物量在深层土壤中的分布相对量更大一些.其中细根的根系消弱系数大于粗根的,这种根系分布特征有利于根系对深层土壤水分养分的吸收利用,进而促进树木地上部分的生长发育.图3表3参15
In this paper , we first analyze each factor of influencing threshing performance , and deficiency of all traditional methods such as single factor , orthogonal experiment , variance analysis and regression analysis , which have been used to study the threshing performance . in the basis of above analysis , we propose a new method of threshing performance modeling - a bp neural network . by use the new ways of threshing performance modeling - a bp neural network , we can obtain the optimum model of threshing performance , which can better describe the seed - husking plant ' s feature of complex nonlinear , multi - input - output and indefinite 本文首先分析了影响脱粒装置性能的各个因素以及传统研究脱粒性能的各种方法如单因素法、正交试验法、方差分析法以及回归分析法的缺陷，在此基础上提出了采用bp神经网络对脱粒装置性能模型进行优化，采用这种方法优化脱粒装置性能模型可以更好地刻划脱粒装置所具有的多输入多输出、复杂非线性以及不确定性等特征。
In this research , the lime - fly - ash bound macadam was joined with steel fibers , glass fibers and polypropylene fibers with the contents of the lime , the fly ash and the macadam fixed in lab tests . the study focuses mainly on the split strength , compression strength , and modulus of compressive resilience and shrinkage property of the lime - fly - ash bound macadam enhanced by different kinds of fibers . based on the test , a detail theoretical analysis was made on the relation of mechanical property , dry shr inkage with the variety and the quantity of fibers , applying the theories of strength , dry shrinkage and the methods of statistics , curve mimesis and variance analysis 本论文主要是研究在同一种二灰碎石混合料(石灰、粉煤灰、集料的含量及比例相同)中分别掺入不同数量的钢纤维、玻璃纤维、聚丙烯纤维，通过室内试验对其抗拉强度、抗压强度、抗压回弹模量和干燥收缩性能与纤维掺量和纤维品种之间的关系加以分析和研究，并在此基础上根据二灰碎石强度形成机理、干燥收缩机理和数理统计、曲线拟合、方差分析的方法分析纤维品种和纤维数量对二灰碎石的力学性能和干燥收缩性能的影响，最后得出纤维对二灰碎石的强度、抗压回弹模量、干燥收缩有很显著的影响，并提出了相应的建议。
