行向、行距对小麦田间光照及产量的影响

以锦麦 2 6 9为试材进行不同行向、行距试验 ,结果表明 :通辽地区采用东西行向种植较南北行向种植群体受光好、产量高 ,适当扩大行距有利于提高单产降低成本     

抗震支座在大跨度空间结构中的应用

介绍抗震支座在大跨度空间结构广州体育馆工程中的应用．广州体育馆屋顶系大跨度空间钢桁架体系，采用抗震支座可以有效地减小钢桁架的内力．     

Generalized Maximum Spacing Estimation for Multivariate Observations

In this paper, the maximum spacing method is considered for multivariate observations. Nearest neighbour balls are used as a multidimensional analogue to univariate spacings. A class of information‐type measures is used to generalize the concept of maximum spacing estimators. Weak and strong consistency of these generalized maximum spacing estimators are proved both when the assigned model class is correct and when the true density is not a member of the model class. An example of the generalized maximum spacing method in model validation context is discussed.     

贴体网格生成技术中正交性和空间疏密控制研究

在综合阐述网格生成技术对流场数值计算重要性的基础上,提出了一种非周期性叶栅流场网格的数值生成方法。该方法对任意曲线（面）边界生成正交性思想的网格具有普适性,且可以对整个区域网格的正交性进行有效的控制。此外,本文还对网格正交性和疏密分布之间的关系进行了探讨,给出了影响网格正交性的因素和改进方法。     

Birth Spacing in the Netherlands. The Effects of Family Composition, Occupation and Religion on Birth Intervals, 1820–1885

In this article, Dutch family reconstructions from the period 1820–1885 are analyst. Cox regression on birth intervals discloses that couples deliberately increased birth intervals already before the onset of the fertility transition. Spacing was not related to a targeted family size or to the sex composition of the family. Rather, the (temporary) burden of young, dependent children induced the parents to delay the next conception. Catholics and orthodox Protestants had shorter birth intervals than liberal Protestants, either because they rejected breastfeeding or because they were reluctant to experiment with birth spacing. Relatively long birth intervals were prevalent in the lowest social groups, whereas farmers and the self-employed middle class tended towards short intervals.     

临界流文丘里喷嘴标定流量装置的研究

本文对ＩＳＯ９３００－１９９０标准中没有作出规定的一些重要内容，诸如用临界流文丘里喷嘴标定气体流量计装置中的气源问题和总体布置问题进行理论分析和试验验证．结果表明，在临界流文丘里喷嘴标定气体流量计装置中，采用高压离心式通风机作为气源以取代目前惯用的真空泵装置是切实可行的．所研制的标定装置精度高、总体布置合理，对今后该类标定装置的发展具有指导意义．     

叙事与抒情、小说与电影的众声喧哗——沈从文《菜园》的文本细读

沈从文先生的小说《菜园》是融叙事与抒情为一体的中国"诗化小说",本文运用西方叙事学理论细读《菜园》,从文中运用抒情性作品的结构元素(画面)来讲述故事入手分析其淡化的叙事结构等方面;并共时性的分析文本中时间概念的空间转化,当"玉家菜园"变成"玉家花园"时,白菜的生存意义转化为菊花旺盛的生命力,传达出作家的反抗与作家对知识的知觉和追逐,而不是文明对自然的毁灭。     

On length and area-biased Maxwell distributions

This article addresses the various properties and different methods of estimation of the unknown parameter of length and area-biased Maxwell distributions. Although, our main focus is on estimation from both frequentist and Bayesian point of view, yet, various mathematical and statistical properties of length and area-biased Maxwell distributions (such as moments, moment-generating function (mgf), hazard rate function, mean residual lifetime function, residual lifetime function, reversed residual life function, conditional moments and conditional mgf, stochastic ordering, and measures of uncertainty) are derived. We briefly describe different frequentist approaches, namely, maximum likelihood estimator, moments estimator, least-square and weighted least-square estimators, maximum product of spacings estimator and compare them using extensive numerical simulations. Next we consider Bayes estimation under different types of loss function (symmetric and asymmetric loss functions) using inverted gamma prior for the scale parameter. Furthermore, Bayes estimators and their respective posterior risks are computed and compared using Markov chain Monte Carlo (MCMC) algorithm. Also, bootstrap confidence intervals using frequentist approaches are provided to compare with Bayes credible intervals. Finally, a real dataset has been analyzed for illustrative purposes.     

Topp–Leone normal distribution with application to increasing failure rate data

In this article, we proposed a new three-parameter probability distribution, called Topp–Leone normal, for modelling increasing failure rate data. The distribution is obtained by using Topp–Leone-X family of distributions with normal as a baseline model. The basic properties including moments, quantile function, stochastic ordering and order statistics are derived here. The estimation of unknown parameters is approached by the method of maximum likelihood, least squares, weighted least squares and maximum product spacings. An extensive simulation study is carried out to compare the long-run performance of the estimators. Applicability of the distribution is illustrated by means of three real data analyses over existing distributions.     

Change PP plot and continous sample quantile function

Functional inference recommends data analysis of a sample of n observations by functional and graphical representations of its probability models using various functions on 0 < u < 1, including the quantile function. This paper discusses: charge PP plots and a continuous version of the sample quantile function which use the mid-distinct value probability integral transform; comparison density functions; comparison interpretation of probability integral transform; maximum spacings method of one sample parameter estimation.