Inferences on regression coefficients in a regression model under heteroscedasticity and robustness with respect to departure from normality

In this paper we consider a simple linear regression model under heteroscedasticity and nonnormality. A statistical test for testing the regression coefficient is then derived by assuming normality for the random disturbances and by applying Welch's method. Some Monte Carlo studies are generated for assessing robustness of this test. By combining Tiku's robust procedure with the new test, a robust but more powerful test is developed.     

Construction of Confidence Intervals for the IVIean of a Population Containing Many Zero Values

The likelihood ratio method is used to construct a confidence interval for a population mean when sampling from a population with certain characteristics found in many applications, such as auditing. Specifically, a sample taken from this type of population usually consists of a very large number of zero values, plus a small number of nonzero values that follow some continuous distribution. In this situation, the traditional confidence interval constructed for the population mean is known to be unreliable. This article derives confidence intervals based on the likelihood-ratio-test approach by assuming (1) a normal distribution (normal algorithm) and (2) an exponential distribution (exponential algorithm). Because the error population distribution is usually unknown, it is important to study the robustness of the proposed procedures. We perform an extensive simulation study to compare the percentage of confidence intervals containing the true population mean using the two proposed algorithms with the percentage obtained from the traditional method based on the central limit theorem. It is shown that the normal algorithm is the most robust procedure against many different distributional error assumptions.     

论量刑程序改革

量刑程序改革是对我国现行法律规定和相关理论的贯彻落实,其目标是为了纠正片面的司法观念,解决量刑的失衡问题,实现量刑的公平正义,加强对公民权利的保障。量刑程序改革的价值应包括公正、公开和效率。在优化资源配置的基础上,我国可以采用混合型的定罪量刑关系模式。     

电子商务间接税法律制度的国际比较及其对我国的启示

通过对世界各国对电子商务间接税立法态度与实践的分析,进行了电子商务间接税法律制度的国际比较,从而得出了对我国电子商务税收法律制度构建的启示.     

A hybrid genetic algorithm/mathematical programming approach to the multi-family flowshop scheduling problem with lot streaming

This paper presents a hybrid genetic algorithm/mathematical programming heuristic for the n-job, m-machine flowshop problems with lot streaming. The number of sublots for each job and the size of sublots are directly addressed by the heuristic and setups may be sequence-dependent. A new aspect of the problem, the interleaving of sublots from different jobs in the processing sequence, is developed and addressed. Computational results from 12 randomly generated test sets of 24 problems each are presented.     

医疗纠纷可仲裁性的法理思考

在医患矛盾时常发生的今天，探求解决医疗纠纷的机制已经成为必要。针对医疗纠纷的可仲裁性展开法理分析，通过对国外医疗纠纷仲裁机制的考察，分析医疗纠纷仲裁的特殊功能，论证其可仲裁性，显得尤其重要。在我国立法现状的基础上，提出我国医疗纠纷可仲裁性采用一般模式的建议，具有一定的现实意义。     

民事诉讼的和谐机理与制度重构

诸多民事诉讼制度都有助于社会的和谐与稳定.然而我国现有一些民事诉讼制度并未切实有效地发挥这一机能.在和谐社会建构这一时代主题下,应进一步改革和完善我国现有民事诉讼制度,进而充分实现和发挥其有助于社会和谐稳定的内在机能.     

双边预约定价安排:基于税权谦抑的税收征管合作

双边预约定价安排是两国税务主管当局基于税权谦抑而进行的税收征管合作,旨在解决跨国公司关联交易的转让定价避税问题,有效避免双重征税.双边安排这种税收征管合作属于政府间特殊税收协定,是专门针对某一跨国公司关联交易中存在的转让定价避税问题,其以一般性国际税收协定为基础,属于为第三人利益而缔结的税收征管合作协定.     

On robustness of the Shiryaev–Roberts change-point detection procedure under parameter misspecification in the post-change distribution

The gist of the quickest change-point detection problem is to detect the presence of a change in the statistical behavior of a series of sequentially made observations, and do so in an optimal detection-speed-versus-“false-positive”-risk manner. When optimality is understood either in the generalized Bayesian sense or as defined in Shiryaev's multi-cyclic setup, the so-called Shiryaev–Roberts (SR) detection procedure is known to be the “best one can do”, provided, however, that the observations’ pre- and post-change distributions are both fully specified. We consider a more realistic setup, viz. one where the post-change distribution is assumed known only up to a parameter, so that the latter may be misspecified. The question of interest is the sensitivity (or robustness) of the otherwise “best” SR procedure with respect to a possible misspecification of the post-change distribution parameter. To answer this question, we provide a case study where, in a specific Gaussian scenario, we allow the SR procedure to be “out of tune” in the way of the post-change distribution parameter, and numerically assess the effect of the “mistuning” on Shiryaev's (multi-cyclic) Stationary Average Detection Delay delivered by the SR procedure. The comprehensive quantitative robustness characterization of the SR procedure obtained in the study can be used to develop the respective theory as well as to provide a rational for practical design of the SR procedure. The overall qualitative conclusion of the study is an expected one: the SR procedure is less (more) robust for less (more) contrast changes and for lower (higher) levels of the false alarm risk.     

民事诉讼代理视野下的“草根律师”制度——以成都地区为例

民事诉讼代理制度作为现代民事诉讼制度中的一项重要制度，是法律面前人人平等原则的重要体现和保障。但是在我国农村劳动力向城镇转移、劳动纠纷增多的时代背景下，我国民事诉讼代理制度日益暴露出一系列的问题。课题组通过大量的实证调研，拟从民事诉讼代理制度的基础理论出发，结合我国目前农民工维权的实际，在理论上初步构建“来自于农民工，服务于农民工”的“草根律师”制度，解决有关农民工劳动纠纷案件中的诉讼代理难的相关问题。