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。     

论我国公共财政框架中的财政监督体系建设

我国现行财政监督体系设置中存在着监督主体多元化、主体关系平行化、监督职能重叠化的问题,造成了财政监督实施中的执法单位职能相互混淆,监督"越位"或"缺位"和对被监督单位重复检查现象等问题,影响了财政监督执法的严肃性和财政监督的工作效率。为消除现行财政监督中的问题和弊端,重新构建适应我国公共财政内在要求的财政监督体系,应强化人民代表大会立法监督、实现预算的决策、执行和监督相分离、建立分层次实施和分级负责并避免对被监督单位重复检查的"立法监督+行政监督+社会监督"的全方位、分层次的复合型体系。     

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.     

The impact of cash-benefit reform on parents’ labour force participation

This paper evaluates the impact of a recent Norwegian family-policy reform. The reform provides benefits of up to NOK 3,000 (approximately € 400) per month to families with one- to three-year-old children, who do not utilize state-subsidized day-care centres. We investigate the reforms effect on parents labour force participation. We find that, on average, the reform reduced womens labour force participation and increased the specialization of work between couples. We find that the effect of the reform depends on womens schooling. Specifically, the labour force participation of highly educated mothers fell by more than that of mothers with less education.I am grateful to Associate Professor Espen Bratberg and Professor Alf Erling for their valuable comments. My special thanks to Kjell Vaage, Arild Aakvik and Afsane Bjorvatn for helpful suggestions. This paper was presented in a seminar at the Department of Economics, University of Bergen, Norway. I am thankful to the participants of the seminar for their positive feedback. The paper has also benefited from the reports given by three anonymous referees. I am also thankful to Professor Heather Joshi for helpful remarks on the paper. Responsible editor: Christoph M. Schmidt.     

Contemporary Conceptions of Environmental Risk: Implications for Resource Management and Policy

Recent theoretical development in environmental sociology has focused on the concept of risk. Macro- and middle-range theoretical conceptualizations relevant to understanding environmental risk and resource depletion have emerged from Europe and the United States. We review five theoretical approaches to the environment–society relationship and identify convergent characteristics relevant for resource management in the modern world. These characteristics suggest goals for resource management should include expanded discursive systems, a more informed public and building institutional trust.     

1948年前后土改中的工商业问题

194 7年 10月开始的解放区新一轮土改 ,是一场强大的社会动员 ,为解放战争提供了巨大的物质力量。土改中发生了破坏工商业的严重“左”倾错误 ,有三个方面的原因。当年 12月开始的纠“左” ,不仅制止了继续“左”倾 ,也为强化政策观念 ,保护工商业 ,平稳接管城市 ,作了必要的思想和政治准备     

福康安整顿广西中越边贸述论

在清代,福康安不仅是一位著名的战将,而且还是一位极具政治才能的历史人物.乾隆五十四年,福康安任两广总督,筹办安南事宜,福康安拟定了"广西中越边贸管理十六条".此条例继承了清政府此前管理广西中越边贸的合理成分,并在广泛调查研究的基础上,制定了合乎时宜的新办法,可谓详细周密.它使清代广西中越边贸的管理措施更加完善,把清代广西中越边贸管理的水平推向了一个新的阶段.