体育教师专业发展阶段的教学策略分析

根据体育教师专业发展过程中的“关注”阶段论，应用教师关注问卷和教学策略量表，对263名体育教师进行调查，说明不同专业发展阶段的体育教师的教学策略呈现不同特点。学生关注阶段的体育教师对课前、课中、课后教学策略均有显著的预测作用，自我关注阶段的体育教师对课中教学策略有显著的预测作用。     

监狱电子政务信息安全调查及改进方案

本文针对全国监狱电子政务信息安全方面问题，采用样本法，选取全国较典型监狱进行研究，收集了当前我国监狱电子政务在信息安全方面的现状、不足等信息，并进一步研究、提出了针对硬、软件及工作人员的几点可行的改进方案。     

De Facto Exchange Rate Regime Classifications: An Evaluation

There exist several statistically-based exchange rate regime classifications that disagree with one another to a disappointing degree. To what extent is this a matter of the quality of the design of these schemes, and to what extent does it reflect the need to supplement statistics with other information (as is done in the IMF’s de facto classification)? It is shown that statistical methods are good at the basics (distinguishing some type of peg from some type of float), but less helpful in other respects, such as determining whether a float is managed, particularly for countries that are not very remote from their main trading partners. Different measures of exchange rate volatility have been used but are not primarily responsible for differences between classifications. The theoretical underpinning of particular classification schemes needs to be more explicit.     

罪恶感诉求与产品类型对善因营销的影响

本文以企业积极开展善因营销活动、承担社会责任的营销行为为研究对象,通过设计不同实验组对罪恶感诉求及产品类型对善因营销效果影响机理进行实证检验。研究发现强调罪恶感诉求的营销效果更为显著,而且罪恶感诉求与产品类型具有显著交互作用;在善因营销活动中推广不同类型的产品,需匹配适宜的罪恶感诉求方式;当产品类型为实用型时,强调罪恶感诉求方式能收获更好的营销效果;当产品类型为享乐型时,不强调罪恶感诉求的营销方式更佳。     

Socially optimal replacement of conventional with electric vehicles for the US household fleet

In this study, a framework is proposed for minimizing the societal cost of replacing gas-powered household passenger cars with battery electric ones (BEVs). The societal cost consists of operational costs of heterogeneous driving patterns' cars, government investments for charging deployment, and monetized environmental externalities. The optimization framework determines the timeframe needed for conventional vehicles to be replaced with BEVs. It also determines the BEVs driving range during the planning timeframe, as well as the density of public chargers deployed on a linear transportation network over time. We leverage data sets that represent US household driving patterns, as well as the automobile and the energy markets, to apply the model. Results indicate that it takes 8 years for 80% of our conventional vehicle sample to be replaced with electric vehicles, under the base case scenario. The socially optimal all-electric driving range is 204 miles, with chargers placed every 172 miles on a linear corridor. All public chargers should be deployed at the beginning of the planning horizon to achieve greater savings over the years. Sensitivity analysis reveals that the timeframe for the socially optimal conversion of 80% of the sample varies from 6 to 12 years. The optimal decision variables are sensitive to battery pack and vehicle body cost, gasoline cost, the discount rate, and conventional vehicles' fuel economy. Faster conventional vehicle replacement is achieved when the gasoline cost increases, electricity cost decreases, and battery packs become cheaper over the years.     

基于核心竞争力的招标代理机构发展策略探讨

招标代理机构要在激烈的竞争中获得持续的竞争优势,归根到底在于培育自己的核心竞争力.本文在对招标代理机构核心竞争力的内涵进行分析的基础上,着重论述了其影响因素和提升策略.     

论大学英语教师知识结构的建构

本文从宏观角度来讨论大学英语教师知识结构的建构。主要从维度建构和影响因素两方面进行分析,并通过内在建构和外在建构两种途径来实现大学英语教师知识结构的建构,以此来适应未来大学英语教师知识的ESP的发展方向。     

全球经济失衡的调整趋势 ——基于美国中心的视角

本文对以美国为中心的全球经济失衡模式进行了趋势性分析。尽管外部失衡呈现出周期性的调整，但这些调整过程也是围绕着美国的经济和利益中心而展开的。对于美国而言，它并不需要刻意对其逆差大小进行调整，而主要通过金融渠道的资本流动收益为其贸易逆差提供融资；其外部失衡的调整是贸易失衡对象的转换，而不是贸易余额的逆转。对于顺差方，外部失衡的调整意味着贸易条件的恶化和经济结构的调整，出口贸易地位将逐步被弱化和替代。以美国为中心的全球经济失衡模式将继续存在，除非美元崩溃和美国经济霸主地位丧失。     

Types of agency cost,corporate governance and liquidity

We study the relationship between governance and liquidity when the agency costs of entrenched management and self-serving controlling shareholders are present. Using a sample of Chinese firms, we show a positive relationship between governance and liquidity. We also find striking differences between firms faced with different types of agency conflicts. Specifically, governance measures such as management compensation, controlling shareholder monitoring and board independence are more effective in lowering the bid-ask spread for state-owned enterprises prone to management entrenchment. In contrast, multiple-layer corporate structures and a higher degree of separation between control and cash flow rights are associated with higher bid-ask spreads in non-state firms characterized by self-serving controlling shareholders. Our study highlights how governance might have different liquidity effects between firms faced with different types of agency conflicts.     

A simple and effective evolutionary algorithm for multiobjective flexible job shop scheduling

This paper addresses the multiobjective flexible job shop scheduling problem (MOFJSP) regarding minimizing the makespan, total workload, and maximum workload. The problem is solved in a Pareto manner, whose goal is to seek for the set of Pareto optimal solutions. We propose a multiobjective evolutionary algorithm, which utilizes effective genetic operators and maintains population diversity carefully. A main feature of the proposed algorithm is its simplicity—it needs only two parameters. Performance of our algorithm is compared with seven state-of-the-art algorithms on fifteen popular benchmark instances. Only our algorithm can find 70% or more non-dominated solutions for every instance.