“京十二条”房地产调控政策的影响——基于TEI@I方法论

北京市政府为落实国务院坚决遏制房价过快上涨的通知,在2010年4月30日发布了十二条具体调控措施,北京房地产交易市场因此受到严重的打击.本文基于TEI@I方法论,使用集成了文本挖掘、经济计量模型和神经网络的分析框架,对本次北京房地产调控政策的影响强度及持续时间进行分析,并将其与国家调控政策对其他一线城市的影响进行对比.结果发现本次"京十二条"调控政策对北京市期房和现房交易额的影响显著,而国家统一的调控政策对上海、深圳的房地产交易市场影响较小.     

The case of post-acquisition integration design decisions

In a multi-method study that examined post-acquisition integration design decisions, managers were found to have poor insight into the values underlying their decision making. This lack of insight was not found to be moderated by increased levels of experience with acquisition decision making, and its effects were reflected in post-acquisition performance.     

“政策领域-时间维度”双重视角下新能源汽车产业政策央地协同研究

本文以2009—2018年间中央及地方（以北京市等四个地区为例）颁布的263项新能源汽车产业政策为研究样本,从实施领域角度,将产业政策分为财税支持、行业规范、规划引导、监督保障、其他措施等五类,经政策分解,将政策片段与新能源汽车产业链五个环节进行匹配;在此基础上,测度不同时期产业政策央地总体协同度与政策实施领域间的协同度,并通过逐步回归法,确定影响政策协同的各政策效力指标灵敏度。研究表明："中央-北京"和"中央-深圳"的政策措施协同趋势基本一致,产业价值链各环节发展较均衡,而"中央-上海"和"中央-江苏"的政策措施协同趋势基本一致,存在"重使用、轻研发、轻市场"等失调现象;四地区与中央政策措施的协同差异主要体现在研发、生产和回收环节,提升"政策引导"和"保障措施"指标的政策效力有助于提升央地协同水平。根据政策分析,未来政策制定需从优化中央政策推广方式和加强监管保障等政策措施着手,根据产业链不同环节状况适时调整政策措施。     

货币政策规则对国际资本流动与人民币汇率的时变影响——基于TVP-SV-VAR模型的实证检验

本文从货币政策理论出发,构建以稳定国际资本流动与人民币汇率的“多目标”货币政策规则理论模型,并采用1998年1月至2019年11月的月度数据,建立开放经济下的TVP-SV-VAR模型,实证检验不同货币政策规则下货币供应冲击、利率冲击对国际资本流动与人民币汇率的时变与动态影响。结果表明：(1)不同时间阶段,货币政策冲击对国际资本流动和人民币汇率的影响存在较强的时变特征。(2)等间隔脉冲响应表明,货币政策冲击对国际资本流动的短期影响效应要高于中长期,而对人民币汇率的影响却存在一定滞后性和扩散性,且价格型规则更有利于熨平外部冲击对国际资本流动与人民币汇率的影响。(3)时点脉冲响应表明,利率冲击对国际资本流动和人民币汇率的影响弱于货币供应冲击,且利率冲击对国际资本流动的影响回到稳态均衡的速度更快。总体来看,在调节国际资本流动和稳定人民币汇率的效果上,价格型规则优于数量型规则,我国央行货币政策选择应逐步从数量型规则向价格型规则转变。     

延迟支付条件下易逝品的最优订货决策研究

本文在考虑延期支付的情况下构建了二级供应链关于易逝品的最优订货决策模型,其中供应链由单个供应商和多个面临资金约束的零售商组成。在不允许缺货的情况下,供应商为零售商提供延迟支付来缓解零售商的资金压力,同时零售商对产品的定价将随易逝品的价值变质而变化。本文利用遗传算法对模型进行了算例分析,同时对模型中的相关参数进行了敏感性分析。结果表明,延迟支付能够提高供应链总利润并降低风险,从而有利于供应链整体效益的提高。在延期支付条件下,供应链各成员获得的收益增量存在较大差距,其中供应商能够获得更多收益。最后,通过敏感性分析,我们还发现产量及易逝品保质期的变动会对供应链整体利润产生不同程度的影响。     

随机需求环境下联产品系统价格与产量决策研究

基于固定比例生产技术和多产品随机需求的情形,研究了联产品制造商的两阶段产量和价格联合优化模型。通过反向倒推的优化求解,得到了联产品制造商的最优产量和价格决策以及变化规律。同时研究了需求服从均匀分布时,需求波动对均衡的影响。研究结果表明,在订货成本较低和一种产品的需求波动性较大时,当另外一种产品的波动增大,则该产品的最优订货量增大,同时价格下降。借助数值仿真,分析了价格敏感度和产出比例对最优决策和利润的影响。结果表明,在给定一种产品的价格敏感度时,另外一种的价格敏感度越大,那么该产品的价格就越低,制造商的订货量就下降。当一种产品的产出比例固定时,另一种产品的产出比例上升时,则该产品的价格下降,制造商的订货量下降,总利润上升。     

Why Study Risk Perception?

Studies of risk perception examine the opinions people express when they are asked, in various ways, to characterize and evaluate hazardous activities and technologies. This research aims to aid risk analysis and societal decision making by (i) improving methods for eliciting opinions about risk, (ii) providing a basis for understanding and anticipating public responses to hazards, and (iii) improving the communication of risk information among laypeople, technical experts, and policy makers.     

The Seveso Directive: An Italian Pilot Study in Enabling Communication

In 1982 the Council of the European Communities issued a Directive on the Major Accident Hazards of Certain Industrial Activities, commonly known as the Seveso Directive. Besides other requirements, the Directive specifies that members of the public liable to be affected by a major accident from certain industrial activities must be informed of safety measures and how they should behave in the event of an accident. The Directive was subsequently amended in an extensive way. Upon the transposition of the Seveso Directive and its amendments into national legislations, the 12 European Member States are faced with the task of "appropriately and effectively" informing the public about major accident hazards. Delays are observed throughout the community, both in transposing the Directives and implementing public information. A pilot study on "Risk Information Needs" was commissioned and carried out at two Seveso sites in Italy in order to begin to resolve some of the problems involved in the provision of public information and to suggest appropriate guidelines. One hundred subjects answered an experimental protocol designed to assess their "information needs." This article presents the theoretical background, the pragmatic aims, and the design of the study. It also summarizes its most relevant findings and suggests some recommendations for the provision of information to the public.     

INTEGRATING PAID WORK AND FAMILY WORK

This qualitative study explores the nature and variation of parenting in the workplace (PIW) childcare practices in a purposive sample of 55 businesses that allowed employees to personally care for children at the workplace while simultaneously performing their job duties. Major findings indicate that although PIW occurred in a variety of industries and organizations of different sizes, the practice was limited to employees who held administrative type positions. Businesses supported PIW on an occasional basis for employees who experienced breakdowns in routine childcare arrangements or on a regular basis for employees who did not have continuing access to acceptable or affordable childcare. According to business representatives in this sample, the practice helped maintain worker productivity and decrease employee absenteeism but was supported only on the condition that employees accomplish work tasks and supervise well-behaved children. The author also considers what PIW might suggest about the relationship between paid work and family work in today's society. Because family and child well-being appeared to be secondary to business goals, theoretical and practice frameworks that align the needs of children and families with the needs of businesses should direct future research on parenting in the workplace. Insights about father involvement in PIW, implications of PIW for child development, and the potential of Border Theory and the Work-life Systems Framework to inform future PIW studies are addressed.

Este estudio cualitativo explora la naturaleza y la variación en el cuidado de los niños en el lugar del trabajo ‘parenting in the workplace’ (PIW) en una muestra planificada de 55 empresas que permitieron que los empleados cuiden personalmente a los niños en el lugar de trabajo mientras simultáneamente hacen sus deberes del trabajo. Los resultados principales indican que aunque PIW ocurrió en una variedad de industrias y organizaciones de tamaños diversos, la práctica era limitada a los empleados con papeles administrativos. Los negocios apoyaron PIW de vez en cuando para los empleados que experimentaron interrupciones en sus arreglos cotidianos para cuidar a sus niños o de manera habitual para los empleados que no tenían acceso a recursos aceptables o asequibles de cuidar a los niños. Según los representantes de negocios en esta muestra, la práctica fomentó el mantenimiento de la productividad del trabajador y disminuyó el ausentismo pero se apoyó solamente a condición de que los empleados lograran sus tareas de trabajo y que los niños se comportaran bien. El autor también considera qué PIW puede sugerir sobre la relación entre el trabajo pagado y el trabajo dentro de la familia en la sociedad de hoy. Ya que el bienestar de la familia y del niño pareció subordinado a las metas de negocio, es necesario que marcos de teoría y práctica que alinean las necesidades de niños y de familias con las necesidades de negocios deben dirigir la investigación futura sobre el cuidado de los niños en el lugar del trabajo. Se tratan también ideas sobre la participación de los padres en PIW, implicaciones de PIW para el desarrollo del niño, y la potencial de Border Theory (teoría de la frontera) y Work-life Systems Framework (marco de sistemas de trabajo-vida) para informar los estudios de PIW más adelante.