中国已婚育龄人群避孕措施选择的偏好与影响因素分析

避孕节育是中国计划生育的核心内容之一，也是我国中长期人口发展战略中稳定低生育水平的重要措施之一。选取1988年全国生育节育抽样调查数据，利用多分类Logit模型（MNL）对不同特征育龄妇女避孕措施进行分析。不同生育周期和不同社会特征、子女性别、计划生育政策强度对已婚育龄人群避孕措施的选取有明显的影响。不同孩次的已婚育龄人群在避孕措施选择中都存在一定的避孕偏好，尤其是子女性别不同时呈现避孕措施选择的明显差异，即最小子女为女孩的育龄人群比最小子女为男孩的育龄人群更为倾向于选择避孕套等自控型短效避孕措施，提示避孕措施的选择存在制度内规避行为，并受到一定的性别偏好因素的影响。     

Farmers’ risk preferences and their climate change adaptation strategies in the Yongqiao District,China

Farmers’ risk preferences play an important role in agricultural production decisions. This study characterizes risk preferences among farmers in Yongqiao and determines how these risk preferences are related to their choices regarding climate change adaptation strategies. We find that most farmers in the study area were aware of climate change. They were taking measures to protect their livelihoods against perceived changes to the local climate. The risk experiment result shows that the representative subject was risk averse, and women were more risk averse than men. The relationships between farmers’ risk preferences and different climate change adaptation choices were different. Farmers’ risk aversion was negatively and significantly related with adaptation strategies on planting new crop varieties and adopting new technology, but it had a significantly positive effect on purchasing weather index crop insurance. The results also indicate that the level of education, farming experience, farm size, household income and perception of climate change impacts influence farmers’ adaptation decisions.     

U.S. online shopping: Facts,fiction, hopes and dreams

Much online shopping research has been viewed from the seller׳s side, i.e., volume, timing and the like. This paper looks at online shopping/buying from the buyer׳s view. Based on 285,000+ individual responses from an online U.S. panel, the questionnaires, gathered between 2006 and 2013, form the analytical base. Findings include an increase in online shopping volume among a declining customer base. Consumer reported details such as leading online retailers (Amazon.com), online product preferences, comparisons of online and fixed location research and buying scenarios, buying influences and the like are discussed. Managerial implications and suggestions for future research are included.     

Are property rights enough?Re‐evaluating a big‐bang claim1

We investigate the claim made by proponents of the big‐bang strategy that the establishment of property rights in an economy in transition creates its own demand for the enforcement of laws to protect those rights. Our model contains a government engaging in activities to accomplish objectives that depend on public support for the enforcement of the rule of law and agents who interpret the level of activities of the government as indications of the government's intent to enforce the rule of law. Agents, using the level of government activities as an input to their decisions, choose whether to support the government's objectives. We establish conditions under which the level of activities chosen by the government maximizes its benefits, and simultaneously induces the constituency to support enforcement of the rule of law. These conditions provide a basis for the argument for the implementation of the big‐bang policy. When these conditions do not hold, however, we show that the level of activities that maximizes the government's benefits may have only a minor impact on support for the enforcement of the rule of law. Two characteristics play an important role in these conditions: the initial level of crime and the types of activities the government chooses to undertake. We present examples showing that the initial level of crime has the more dramatic effect on subsequent support for the rule of law.     

基于景观偏好理论的大学校园环境建设研究

校园环境从广义上分为物质环境及精神环境，本文将物质环境中的校园景观这一基本要素作为研究的切入点，借用非专家法的心理学模式中的Kaplan景观偏好理论及景观环境偏好矩阵设计调查问卷，以实证的研究方法进行大学校园环境现状调研，并通过数据统计及SPSS软件进行研究分析，试为大学校园环境建设提出优化建议。     

Restriction of cost of capital＇s property right and financing preference of listed companies

Opposite to the financing preference of creditor＇s rights in western firms, Chinese listed companies obviously have the financing preference of shareholding. This paper uses the theory of property for reference, and redefines the concept of cost of capital in a higher level, and considers it as the property of investors. Through a mathematics model, the author analyzes that how restriction of cost of capital＇s property right makes influence on the financing preference of firms, and considers that it is the restriction of cost or the imperfect cost of capital＇s property right that influences the financing cost of shareholding and creditor＇s rights, hence, determining the financing preference of listed companies. In other words, it is the restriction of cost of capital＇s property right that causes the financing preference of creditor＇s rights in western firms, and the imperfect cost of capital＇s property right is the reason for the financing preference of shareholding of Chinese listed companies.     

对于劳动力市场的性别歧视的实证分析——以美国的2007年劳动力市场的数据为例

通过借鉴美国2007年美国劳动力市场的数据,对于劳动力市场中的性别歧视现象作了实证分析。考虑到了影响工资收入的职业类型、技术差异,劳动者偏好等影响因素对于劳动群里女性比例与该劳动群体里的工资收入进行了多元回归分析。该研究结果对于改善较不成熟的中国劳动力市场的就业问题具有一定的借鉴意义。     

‘Regular’ choice and the weak axiom of stochastic revealed preference

We explore the relation between two ‘rationality conditions’ for stochastic choice behavior: regularity and the weak axiom of stochastic revealed preference (WASRP). We show that WASRP implies regularity, but the converse is not true. We identify a restriction on the domain of the stochastic choice function, which suffices for regularity to imply WASRP. When the universal set of alternatives is finite, this restriction is also necessary for regularity to imply WASRP. Furthermore, we identify necessary and sufficient domain restrictions for regularity to imply WASRP, when the universal set of alternatives is finite and stochastic choice functions are all degenerate. Results in the traditional, deterministic, framework regarding the relation between Chernoff’s condition and the weak axiom of revealed preference follow as special cases. Thus, general conditions are established, under which regularity can substitute for WASRP as the axiomatic foundation for a theory of choice behavior.     

重心位置误差对隔振系统性能的影响

论述了机载电子设备的重心位置与隔振系统的几何中心不重合误差对其安装架隔振系统性能的影响，并提出了解决该问题的方法。