提高体育专业学生英语学习能力的调查分析

对省内外七所高校不同体育专业学生英语学习能力的全面调查,发现体育专业学生英语能力与其心智发展特点有关;根据这种特点,采取相应的学法教法对策,使他们的英语学习能力得到迅速提高,并为特殊专业学生的英语教学提供了理论和实践依据。     

科学执政、民主执政中的依法执政基本途径

依法执政或依法行政,作为执政方式最为直接、最为具体的基本实践环节或途径,在相当范围内反映着科学执政、民主执政的实现程度。这取决于《行政许可法》不打折扣地坚决实施,政府的依法执政职能方式从重管制向重服务转变;职能范围从“全能”向“有限”回归;职能性质由“专断”走向真正“民主”;职能习惯从主观随意转向严格的法治。     

欧共体竞争法的实施机制及对我国的启示

欧盟理事会第1/2003号条例取代了1962年第17号条例,废除了原有的事前申报制度,实现了欧共体竞争法实施的非集权化,加强了欧盟委员会的调查权,由此确立了“非集权”的竞争法实施机制①。在新机制下,委员会负责制定和发展欧共体的竞争政策,实施欧共体竞争法的任务由各成员国承担。作为世界上最先进的竞争法体系之一,欧共体竞争法的最新发展对我国竞争法制的确立有重要的借鉴意义。     

拟正则图的最大边边连通度(英文)

定义了图的边边连通度,设计了一类具有最大边边连通度的拟正则图。     

Using a computer simulation game to teach family time use concepts

A computer simulation game designed to give students insights into family time use concepts has been used in an introductory family resource management class at Ohio State University and other universities. The game allows for planning for time use changes over the family life cycle. The game can give students insights into economic and sociological models of time use. It is possible that future versions of the game could be used in family counseling.His research interests include derivation of optimal decision-making rules for families and family financial management.Her research interests include financial management over the life course including financial ratios, baby boomers, and retirement. She received her Ph.D. in 1993 from The Ohio State University in Family Resource Management.His research interests include the time trade-offs made between couples, financial planning over the life cycle, and the interaction of time and money between families and their home-based businesses. He received his Ph.D. in 1993 from The Ohio State University in Family Resource Management.     

Analyzing mental health evaluation: moral and ethical dimensions

Now that evaluators have been sensitized to the importance of moral and ethical issues in their work, it is time to move beyond generalities and examine the moral and ethical implications of specific evaluation models in specific settings. This paper proposes a framework that can be used to examine moral and ethical dimensions of evaluation and illustrates it by analyzing a selected model of mental health evaluation. Such a systematic identification of moral issues can improve evaluation practice both proactively, by shaping the training of evaluators, and retrospectively, by contributing to meta-evaluation.     

电商参与、技术认知对农户绿色生产技术采纳程度的影响

农户的绿色生产技术采纳不仅有利于粮食安全和生态环境保护,而且对农业的绿色生产转型具有重要意义,农产品的电商销售可成为农户进行绿色生产的可能路径。利用有序Logit模型测度电商参与对猕猴桃种植户绿色生产技术采纳程度的影响,使用结构方程模型中的均数方差调整加权最小二乘法 (WLSMV) 和 Bootstrap 法检验技术认知的中介效应,采用倾向得分匹配法对电商参与影响农户绿色生产技术采纳程度进行稳健性检验。研究发现:电商参与显著提高了猕猴桃种植户绿色生产技术的采纳程度,并且技术认知在此过程中起着积极的中介作用。政府应从加大宣传力度、提供技术和政策支持、提高农户绿色生产技术认知等方面提高农户绿色生产技术采纳程度。     

高Si/C高强度铸铁中C、Si、Si/C的作用及其选择

本文叙述了高Si/C高强度灰铸铁中碳、硅元素存在的形式及其对结晶过程的影响。试验表明,当碳当量一定时,随着Si/C的升高,初生奥氏体枝晶数量增多并且细化和强化,从而构成了强度的基础。该铸铁的强度模式应为“初生奥氏+共晶团”。本文对E型石墨存在的必然性和合理性也进行了讨论。     

Any complete preference structure without circuit admits an interval representation

This article proves that all complete preference structures where the strict preference relation (P) has no circuit admit a representation by intervals of the real line; the rule for deciding whether an interval is indifferent or preferred to another is less straightforward than for interval orders: strict preference is indeed compatible with a certain degree of overlapping of intervals, the allowed degree being specified by means of a so-called tolerance function.     

Dynamic reliability models with conditional proportional hazards

A dynamic approach to the stochastic modelling of reliability systems is further explored. This modelling approach is particularly appropriate for load-sharing, software reliability, and multivariate failure-time models, where component failure characteristics are affected by their degree of use, amount of load, or extent of stresses experienced. This approach incorporates the intuitive notion that when a set of components in a coherent system fail at a certain time, there is a jump from one structure function to another which governs the residual lifetimes of the remaining functioning components, and since the component lifetimes are intrinsically affected by the structure function which they constitute, then at such a failure time there should also be a jump in the stochastic structure of the lifetimes of the remaining components. For such dynamically-modelled systems, the stochastic characteristics of their jump times are studied. These properties of the jump times allow us to obtain the properties of the lifetime of the system. In particular, for a Markov dynamic model, specific expressions for the exact distribution functions of the jump times are obtained for a general coherent system, a parallel system, and a series-parallel system. We derive a new family of distribution functions which describes the distributions of the jump times for a dynamically-modelled system.