西方国家的政府管制变迁及其启示

西方国家的政府管制在一百多年的变迁中大致历经了三个发展时期,从传统的政府管制到放松管制再到重新管制,不同时期的理论基础和管制内容都发生了明显的变化。文章通过对西方国家管制的理论基础、改革历程及管制内容进行梳理,以期能对我国政府管制改革起到借鉴作用。     

Evaluating and improving GARCH-based volatility forecasts with range-based estimators

This article investigates the feasibility of using range-based estimators to evaluate and improve Generalized Autoregressive Conditional Heteroscedasticity (GARCH)-based volatility forecasts due to their computational simplicity and readily availability. The empirical results show that daily range-based estimators are sound alternatives for true volatility proxies when using Superior Predictive Ability (SPA) test of Hansen (2005) to assess GARCH-based volatility forecasts. In addition, the inclusion of the range-based estimator of Garman and Klass (1980) can significantly improve the forecasting performance of GARCH-t model.     

The econometric challenge to Keynes: arguments and contradictions in the early debates about a late issue *

The paper investigates the discussions between Keynesians and ‘reconcilers’ about the interpretation of the ‘General Theory’, and the effect of the transformation of economics during the thirties as the outcome of that discussion. It highlights the contribution of some of the first econometriians, who argued for a new view of economics as an exact science based on mechanical models and mathematically defined theories, while supporting planning rather than the indirect steering devices suggested by Keynes.

The inroduction of this type of mathematical models in the framework of Keynesian macro–policies is related to two major events: the Oxford meeting of the Econometric Society in which the IS-LM model emerged, and the Cambridge meeting dedicated to the discussion of Tinbergen's work on business cycles.

The framework, antecedents and consequences of Keynes-Tinbergen debate on the role of econometrics is here assessed on the basis of unpublished documental evidence. Although most of the econometricians took sides with tinbergen against Keynes's scepticism on the use of formal models and simple representations in macroeconomics, several of them, including the more influential of the then young mathematically inclined economists, shared some of the basic elements of the critique. These discussions among Frisch, Tinbergen, Lange, Divisia, Roos, Marschak and others are reviewed in the paper and related to the evolution of the Cambridge group itself.     

Consumers' Online Information Search: Gen Yers' Finding Needles in the Internet Haystack

There exists a paucity of research attention afforded to understanding consumer information search behavior on the Internet, vis-a-vis existing information search models such as an interactive, consumer experience in the offline realm. Thus, the present study investigates whether the factors inculcated within traditional cognitive processing models remain significant in the online information setting. Grounded in the contributions of Punj and Staelin (1983 Punj , G. N. , & Staelin , R. ( 1983 ). A model of consumer information search behavior for new automobiles . Journal of Consumer Research , 9 ( March ), 366 – 380 .[Crossref], [Web of Science ®] , [Google Scholar]) and Srinivasan and Ratchford (1991 Srinivasan , N. , & Ratchford , B. T. ( 1991 ). An empirical test of a model of external search for automobiles . Journal of Consumer Research , 18 ( September ), 233 – 242 .[Crossref], [Web of Science ®] , [Google Scholar]) in the context of offline information search, this study proffers an empirical model of consumer online information. The empirical findings reveal that Perceived Risk and Perceived Cost do not significantly contribute to the consumer online information Search Effort. Rather, both of these conventional antecedents and Enjoyment significantly impact the satisfaction of young consumers' online information search endeavors. We recommend further studies to examine consumer information search behavior in other contexts (e.g., mobile phones) across countries.     

Ethical attitudes of mental health practitioners: Balancing therapeutic practices and treatments

This paper reports the responses of 251 mental health care practitioners to a mail survey examining their views concerning ethical conflicts and practices within their work environments. Besides identifying the sources and types of conflicts they experience, respondents were asked how ethical standards have changed over the last 10 years as well as the factors influencing these changes. Conclusions and implications are outlined and future research needs are described.Mohammed Y. A. Rawwas is an Assistant Professor of Marketing at the University of Northern Iowa. His research has appeared in theJournal of Business Ethics, Journal of Hospital Marketing, Health Marketing Quarterly, Medical Marketing & Media, among other journals and proceedings.David Strutton is the Acadiana Bottling Professor of Marketing at the University of Southwestern Lousiana. His research has appeared in theJournal of the Academy of Marketing Science, Journal of Advertising Research, Journal of Business Research, Journal of Macromarketing andJournal of Personal Selling & Sales Management, among other journals and proceedings.Lou E. Pelton is an Assistant Professor of Marketing at the University of North Texas. His research has appeared in theJournal of the Academy of Marketing Science, Journal of Business Research, Journal of Global Marketing, Journal of Macromarketing, andJournal of Personal Selling & Sales Management, among other journals and proceedings.     

构建高新技术产业集群形成和发展的多维系统模型

在探讨高新技术产业集群形成原因和发展机理的基础上，从集群内的企业层次、区域集群层次、区域层次构建了高新技术产业集群形成和发展的多维系统模型。     

论我国城市规划管理机制的问题与创新

要提高城市规划管理的效率和质量,须对现有的规划管理机制进行创新。本文在论述了我国城市规划管理机制现状的基础上,指出城市规划管理机制创新可从四个方面入手：建立科学化与民主化的决策机制、公开化与远东化的政府机制、法制化与完善化的监督机制、专业化与社会化的咨询机制。     

我国中小企业技术创新中的政府扶持策略分析

中小企业一直是技术创新的主要源泉。本文在阐述技术创新的内涵及政府扶持中小企业技术创新的必要性和可行性的基础上,提出了我国政府促进中小企业技术创新的具体策略。     

振兴吉林经济关键在于鼓励创新

振兴东北老工业基地，加速吉林省经济的快速发展，现实最关键的“症结”就是创新不足。没有创新，吉林要加速发展是十分困难的。这一问题无论是对企业，还是对政府都必须放在重中之重的位置．要调动各种积极因素，形成良好的创新环境，为振兴吉林老工业基地创造条件。