Implementation of JIT purchasing: An integrated approach

This article addresses the necessity of integration between buyer and supplier for effective implementation of the JIT system. An integrated lot-splitting model of facilitating multiple shipments in small lots is developed and compared with the existing approach in a simple JIT environment, single-buyer-single-supplier, under deterministic conditions for a single product. It is shown that the optimal policy adopted by the integrated approach can provide a strong and consistent cost-minimizing effect for both buyer and supplier over the existing approach.     

"南方谈话"与"三个代表"的伟大历史性贡献之比较

"南方谈话"是对"什么是社会主义,怎样建设社会主义"研究的再深入、再延续,但丝毫没有放松"建设一个什么样的党,怎样建设党"这个基本点;"三个代表"在极力抓好"建设一个什么样的党,怎样建设党"的问题时,丝毫没有脱离"什么是社会主义,怎样建设社会主义"这个大方向.这"一个大方向,一个基本点"都是我国能否实现国富民强业兴的关键之所系.所以,也是我国两代领导核心极力强调,尽力而为,并时时赋予新的内容,常常提出新的要求的原因之所在.     

埃及现代政党政治的演变

埃及现代政党政治缘起于20世纪初,历经宪政时代、纳赛尔时代和后纳赛尔时代三个阶段.从宪政时代的多党政治到纳赛尔时代的一党政治和后纳赛尔时代政党政治的多元化进程,构成埃及现代政党政治演变的明显轨迹.民族主义政党与民主主义政党的此消彼长、世俗政党与宗教政党的错综交织、议会政党与非议会政党的激烈角逐,集中体现埃及现代化进程中政治层面的历史运动.     

Orthodox BLUP versus h-likelihood methods for inferences about random effects in Tweedie mixed models

Recently, the orthodox best linear unbiased predictor (BLUP) method was introduced for inference about random effects in Tweedie mixed models. With the use of h-likelihood, we illustrate that the standard likelihood procedures, developed for inference about fixed unknown parameters, can be used for inference about random effects. We show that the necessary standard error for the prediction interval of the random effect can be computed from the Hessian matrix of the h-likelihood. We also show numerically that the h-likelihood provides a prediction interval that maintains a more precise coverage probability than the BLUP method.     

Redressing Inequity in Parent Care Among Siblings

When inequities occur in the division of labor among adult siblings caring for older parents, conflict may result. This paper uses equity theory as a framework for understanding the processes used by siblings to rectify imbalances in their parental responsibilities. The study is based on a sample of 40 focus group participants who described caregiving relationships among siblings. Consistent with equity theory, these participants used two approaches to redress inequities in their sibling caregiving relationships: requesting behavioral changes from siblings and making cognitive changes. The findings suggest that these two approaches can result in more perceived equity but may also lead to even greater perceived inequity and distress.     

Changes in Support From Confidants,Children, and Friends Following Widowhood

This paper examines the extent to which widowhood affects changes in (a) the availability of a confidant, (b) emotional support from children, and (c) emotional support from friends/relatives both 6 and 18 months after spousal loss. Analyses are based on data from the Changing Lives of Older Couples, a prospective study of 1,532 married individuals aged 65 and older. Compared to married persons, widowed persons are less likely to have a confidant, yet they receive greater support from children, friends, and relatives, controlling for support prior to widowhood. The findings suggest that, although close social relationships may remain stable in the course of normal aging, stressful events such as widowhood may bring forth both losses and gains in social support.     

Statistical morphology

This paper first introduces a parametric model for the generation of stationary random correlated binary sequences. The parameters of the model include the probability that a pixel is a binary one pixel and the length of the structuring element which dilates the initially spatially uncorrelated sequence. The spatial statistics of such eroded, dilated, opened and closed correlated binary sequences are derived in terms of the spatial statistics of the input binary sequence. Understanding of such one-dimensional processing is a precondition for understanding what happens in the more interesting two- dimensional case.     

论梁启超晚年的文化取向和政治取向及其疏离--以《欧游心影录》为中心的分析

梁启超在欧游之前,留给人们的是一个与时俱进的新派人物的形象.欧游之后,他在文化取向上成为一名保守主义者,在政治取向上则仍是一位自由主义者.这种矛盾的统一源于他的民族主义情节,是其民族主义思想将二者融合在了一起.     

L1 for the simple linear regression model

By modifying the direct method to solve the overdetermined linear system we are able to present an algorithm for L₁ estimation which appears to be superior computationally to any other known algorithm for the simple linear regression problem.