查询词典 hypothesis

The proposal will consist of an introduction that reviews the current literature, a testable hypothesis, a set of experiments to test this hypothesis, and a discussion of the possible outcomes and interpretation of the experiments.

提议需包括对目前相关文献的综述介绍，提出一个可实验验证的假说，一套检验此假说的实验方法，对可能结果的讨论，及对实验的解释。

Testing directly the hypothesis that the intercept is the risk-free rate when the weekly Treasury bill rate is used for this purpose, we accept this hypothesis at the 5% level for the groups of 30 and 60 stocks but reject it for groups of 90 stocks at the 10% level .

直接拦截试验是假设无风险利率当务周刊法案速度的快慢为此我们接受这个假说在5%左右的股票和60组30批90但拒绝为股票10%的水平。

TYPE I ERROR is to reject the null hypothesis when it is true; TYPE II ERROR is to accept the null hypothesis when it is false.

比如最近在统计学课本上看到这么一段话：统计中有两类误差，分别称为一类误差和二类误差。

The efforts that have been made to explain optical phenomena by means of the hypothesis of a medium having the same physical character as an elastic solid body led in the first instance, to the understanding of a concrete example of a medium which can transmit transverse vibrations, and,at a later stage, to the definite conclusion that there is no aluminiferous medium having the physical character assumed in the hypothesis.

为了解释光学现象，人们曾经试图假定，有一种具有与弹性固体相同的物理性质的介质。这种尝试的结果，最初使人们了解到能传输横向振动的介质的具体实例。但后来却使人们得出了这样一个明确的结论：并不存在任何具有上述假定所认为的那种物理性质的发光介质。

The efforts that have been made to explain optical phenomena by means of the hypothesis of a medium having the same physical character as an elastic solid body led, in the first instance, to the understanding of a concrete example of a medium which can transmit transverse vibration but later to the definite conclusion that there is no aluminiferous medium having the physical character assumed in the hypothesis.

为了解释光学现象，人们曾试图假定有一种具有与弹性固体相同的物理性的介质。这种尝试的结果，最初曾使人们了解到一种能传输横向震动的介质的具体实例，但后来却使人们得出了这样一个明确的结论：不存在任何具有上述假定所认为的那种物理性质的发光介质。

The anisotropical characteristics of metal rubber elements performed under loadings in different directions were researched, and physical hypothesis were provided for the analysis of inner structure of metal rubber material The main parameters for the analysis of anisotropical performance were confirmed according to the previous hypothesis and tested experimentallyThe results show that variety of the relative heights and the radius of MR elements affect the radial stiffness of MR isolator When isola...

研究了金属橡胶构件在不同方向的载荷作用下表现出来的各向异性，提出了用于分析金属橡胶材料内部结构的物理假设，并根据假设确定了各向异性研究的主要参数，然后通过实验研究进行了验证。实验结果表明，如果改变金属橡胶元件的相对高度，增加径向尺寸可以在很大范围内改变金属橡胶隔振器的径向刚度；要使金属橡胶隔振器的力学特性更近于线性，应让隔振器在径向范围内工作；如果隔振系统中含有多个承受压载荷的金属橡胶隔振器，则可以使其工作在与成型压力方向相垂直的方向。当相同结构和尺寸的钢元件和金属橡胶元件在承受剪切载荷作用时，这两种材料表现出了相同的刚度变化趋势。

The main achievements of the project are as follows: 1 the hypothesis that a decrease in seed mass causes an increase in mean dispersal distance has been tested based on the experiments of weed dispersal by wind. The experimental results partly support the hypothesis. The results will help farmers to make an optimal strategy of weed control; 2 a statistic method for inferring probabilistic distribution function of a random variable has been developed, by which probabilistic distribution functions of weed species dispersal have been determined; 3 the reproduction structure of Bromus sterilis has been studied; 4 a more complex CA model with 25 neighborhood cells were built, which can simulate spread of a weed population. This work promotes developments in both theory and application of CA models; 5 the "mean law" in weed control has been proposed. Accordingly, the algorism of patch spring may be calibrated; 6 the "patch" and "true patch" have been mathematically defined so that herbicide can be efficiently applied; 7 simulation validates that initial configurations of weed will affect dispersal of its population and strategies of controlling it, or its distribution patterns affect its dispersal progresses.

主要完成的工作和取得的成果有：1）用实验证实了重量较轻的杂草种子并不一定飞得比较重的远，其结果有助于农民制订杂草的优化控制策略；2）发展了一种推断随机变量分布函数的统计方法并用它来获得了几个杂草种的扩散分布函数；3）对杂草Bromus sterilis的繁殖结构进行了研究；4）建立了一个具有25邻的较复杂的能模拟杂草扩散的CA模型，并在理论和应用方面促进了CA模型的发展；5）在杂草控制方面提出了&平均法则&，据此可对按块施药方法进行校正；6）精确地定义了&块&和&真块&以便在杂草控制中能更有效地使用除草剂；7）模拟证实杂草种群的初始配置影响其扩散和控制策略，或者格局影响过程。

The problem of statistical discission in finite mixing distribution model and linear model is discussed in this thesis,including:Firstly,in the aspect of hypothesis test,we mainly discuss the general homogeneous hypothesis testing problem.

现将主要内容概述如下：一、在假设检验方面，本文主要研究了正态混合分稚模型的同构性检验问题，也就是说，检验观测数据究竟是来自单一的正态总体，还是混合正态总体。

According to my hypothesis, I turn the ectogenous institutional factors to be endogenous ones, in order to test the effects of these factors to regional economic growth, which testify and support my hypothesis in chapter 1 in empiric way.

计量回归结果表明，跨地区经济增长与市场化水平之间存在很强的线性依存关系，市场化程度对区域经济增长的影响是显著的，市场化水平可解释总体经济增长的21％；二是检验所有权结构差异对区际经济非均衡增长的影响。

As for the standard rational hypothesis of economics, it is weak for its power to explain altruistic behavior; this paper establishes improvably a new hypothesis that forms new relations between the egoistic motivation and the utility function of agent. And then gives a general proposition: egoistic and altruistic behavior both originally come from a unique and invariable egoistic motivation.

提要：斯密问题及其在当代的延展是：一种利己动机能否驱策利己和利他两种行为针对标准新古典理性假设对于利他行为的解释力疲弱，本文改进性地建构了利己动机与行为人效用函数及其关系，提出了一般性命题：利己或利他行为都根源自唯一不变的利己动机。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。