民事责任归责问题的理论思考

民事责任的归责是指民事行为人违反法定义务或约定义务后,依什么为根据来使行为人承担强制性的不利后果。民事责任的归责基础是民事违约行为或违法行为对他人的权利或利益造成了损害。民事责任的归责基础和归责要素是两个既有区别又有联系的概念。由行为、损害、过错、因果关系、主体的特殊角色的不同组合构成了民事责任归责要素的内容。确定民事责任的归责原则需考虑以下规则:合理性规则、公正性规则、可操作性规则和逻辑性规则。     

Comparison of procedures for fitting the autoregressive order of a vector error correction model

This paper investigates the lag length selection problem of a vector error correction model by using a convergent information criterion and tools based on the Box–Pierce methodology recently proposed in the literature. The performances of these approaches for selecting the optimal lag length are compared via Monte Carlo experiments. The effects of misspecified deterministic trend or cointegrating rank on the lag length selection are studied. Noting that processes often exhibit nonlinearities, the cases of iid and conditionally heteroscedastic errors will be considered. Strategies that can avoid misleading situations are proposed.     

谈高校英语专业口译测试的规范化设计

口译测试是检测考生口译能力并获取教学反馈信息的重要手段。本文分析了当前高校口译测试中存在的问题,并以交际测试理论为指导,对口译测试的原则、内容、题型和评分标准等问题进行了综合研究和探讨,在此基础上对高校口译测试的规范设计和合理实施提出了具体建议和方案。     

我国环境资源民事侵权责任制度之探讨

环境资源民事侵权是一种特殊侵权行为,与传统的侵权行为相比较具有显著的特点。与此相关的责任构成上实行无过错责任、因果关系推定、举证责任倒置以及多元证明标准体系,以利原告诉讼,保护自然环境与生态安全。     

论服装设计大赛与高校服装设计教育的关系

近年来,中国各类服装设计大赛迅猛发展,在为服装行业挖掘设计人才的同时,也为中国高校服装设计教育提供了一个良好的行业氛围。本文通过分析服装大赛与高校服装设计教育之间的关系,总结了各类服装设计大赛的规则设置、评判标准及组织形式,并针对大赛参与各方如何共同进入一个良性的发展空间提出了若干建议。     

Lag Length Selection for Unit Root Tests in the Presence of Nonstationary Volatility

A number of recent papers have focused on the problem of testing for a unit root in the case where the driving shocks may be unconditionally heteroskedastic. These papers have, however, taken the lag length in the unit root test regression to be a deterministic function of the sample size, rather than data-determined, the latter being standard empirical practice. We investigate the finite sample impact of unconditional heteroskedasticity on conventional data-dependent lag selection methods in augmented Dickey–Fuller type regressions and propose new lag selection criteria which allow for unconditional heteroskedasticity. Standard lag selection methods are shown to have a tendency to over-fit the lag order under heteroskedasticity, resulting in significant power losses in the (wild bootstrap implementation of the) augmented Dickey–Fuller tests under the alternative. The proposed new lag selection criteria are shown to avoid this problem yet deliver unit root tests with almost identical finite sample properties as the corresponding tests based on conventional lag selection when the shocks are homoskedastic.     

Relevance of Risk Predictions Derived from a Chronic Species Sensitivity Distribution with Cadmium to Aquatic Populations and Ecosystems

Criteria to protect aquatic life are intended to protect diverse ecosystems, but in practice are usually developed from compilations of single‐species toxicity tests using standard test organisms that were tested in laboratory environments. Species sensitivity distributions (SSDs) developed from these compilations are extrapolated to set aquatic ecosystem criteria. The protectiveness of the approach was critically reviewed with a chronic SSD for cadmium comprising 27 species within 21 genera. Within the data set, one genus had lower cadmium effects concentrations than the SSD fifth percentile‐based criterion, so in theory this genus, the amphipod Hyalella, could be lost or at least allowed some level of harm by this criteria approach. However, population matrix modeling projected only slightly increased extinction risks for a temperate Hyalella population under scenarios similar to the SSD fifth percentile criterion. The criterion value was further compared to cadmium effects concentrations in ecosystem experiments and field studies. Generally, few adverse effects were inferred from ecosystem experiments at concentrations less than the SSD fifth percentile criterion. Exceptions were behavioral impairments in simplified food web studies. No adverse effects were apparent in field studies under conditions that seldom exceeded the criterion. At concentrations greater than the SSD fifth percentile, the magnitudes of adverse effects in the field studies were roughly proportional to the laboratory‐based fraction of species with adverse effects in the SSD. Overall, the modeling and field validation comparisons of the chronic criterion values generally supported the relevance and protectiveness of the SSD fifth percentile approach with cadmium.     

Ban Estimation for Chi-Square Test Criteria in Categorical Data

This expository paper describes some recent work that further develops the theory of BAN estimators and the related chi-scuare test statistics.The extensions are in several directions: (a) the class of regular estimators is broadened by permitting extraneous random elements; (b) more general models are permitted under the constraint equations specification; and (c) BAN estimators are defined for general models combining features of two types of specification.In particular, WLS estimators are shown to be BAN.     

社会科学理论体系的基本结构、评价标准与建构方法

社会科学理论体系是正确反映社会客体本质和规律的理性知识,它是由基本原理、经验知识和逻辑方法构成的整体系统,其基本评价标准包括客观实证、逻辑自洽、构造简单和理论预见四个方面。建立理论体系是社会科学基础研究的直接目的,为此所运用的最一般的建构方法主要是历史与逻辑相统一的方法、由抽象上升到具体的方法、公理化方法、原型移植方法和理想化方法等。     

Prospect Theory and Limit Lines

Risk acceptance criteria in the form of limit lines are investigated in the context of prospect theory. This theory departs from utility theory in several respects, an important one being the use of weights other than probabilities in the evaluation of the expected impact of uncertain outcomes. Hypothetical functions reflecting certain attitudes toward consequences and rare events are developed and combined to produce several limit lines.