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11.
In this paper we specify a semi‐nonparametric competing risks (SNP‐CR) model of recidivism, for misdemeanors and felonies. The model is a bivariate mixed proportional hazard model with Weibull baseline hazards and common unobserved heterogeneity. The distribution of the latter is modeled semi‐nonparametrically, using orthonormal Legendre polynomials on the unit interval, and integrated out to make the two durations dependent, conditional on the covariates. The SNP‐CR model involved corresponds to a Logit model for felony arrest; hence the validity of the SNP‐CR model can be tested by testing the validity of the implied Logit model. The latter will be done by using the integrated conditional moment (ICM) test. In the first instance we have estimated and tested two versions of the SNP‐CR model, without and with fixed state effects. However, the ICM test rejects these models. Therefore, we have estimated and tested the model for each state separately. These state models are not rejected by the ICM test. Indeed, the estimation results vary substantially per state. Copyright © 2007 John Wiley & Sons, Ltd. 相似文献
12.
Haifei Li Stanley Y. W. Su Herman Lam 《Journal of Organizational Computing & Electronic Commerce》2013,23(1):1-29
In recent years, there has been increasing interest in automated e‐business negotiations. The automation of negotiation requires a decision model to capture the negotiation knowledge of policymakers and negotiation experts so that the decision‐making process can be carried out automatically. Current research on automated e‐business negotiations has focused on defining low‐level tactics (or negotiation rules) so that automated negotiation systems can carry out automated negotiation processes. These low‐level tactics are usually defined from a technical perspective, not from a business perspective. There is a gap between high‐level business negotiation goals and low‐level tactics. In this article, we distinguish the concepts of negotiation context, negotiation goals, negotiation strategy, and negotiation tactics and introduce a formal decision model to show the relations among these concepts. We show how high‐level negotiation goals can be formally mapped to low‐level tactics that can be used to affect the behavior of a negotiation system during the negotiation process. In business, a business organization faces different negotiation situations (or contexts) and determines different sets of goals for different negotiation contexts. In our decision model, a business policymaker sets negotiation goals from different perspectives, which are called goal dimensions. A negotiation policy is a functional mapping from a negotiation context to some quantitative measures (or goal values) for the goal dimensions to express how competitive the policymaker wants to reach that set of goals. A negotiation expert who has the experience and expertise to conduct negotiations would define the negotiation strategies needed for reaching the negotiation goals. Formally, a negotiation strategy is a functional mapping from a set of goal values to a set of decision‐action rules that implement negotiation tactics. The selected decision‐action rules can then be used to control the execution of an automated negotiation system, which conducts a negotiation on behalf of a business organization. 相似文献
13.
Alfred Tovias Sema Kalaycioglu Inon Dafni Ester Ruben Lior Herman 《The World Economy》2007,30(4):665-684
This article examines the potential for economic cooperation among Mashrek countries, Turkey and Israel in the fields of trade in goods and services both separately and across‐field. It first describes the macroeconomic features of the region and then estimates the overall potential for inter‐industry trade in goods by estimating gravity equations for each country separately and the potential for intra‐industry trade using Grubel‐Lloyd indices. The article also examines the potential for trade in specific services, namely information and computer technology, transport, financial and health services. 相似文献
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Herman Gadon 《Business Horizons》1984,27(1):42-46
Quality circles, flextime, and wellness in the workplace are but a few of the plethora of new, and often confusing, ideas about improving America's business. What they seek to do and why they have arisen now are the subjects of this article. 相似文献
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Performance feedback has significant potential to benefit employees in terms of individual and team performance. Moreover, effective performance feedback has the potential to enhance employee engagement, motivation, and job satisfaction. However, managers often are not comfortable giving performance feedback and such feedback, if improperly relayed, causes more harm than good. In this installment of HUMAN PERFORMANCE, we describe a shift from traditional weaknesses-based feedback (which relies on negative commentary focused on employees’ shortcomings) to the more constructive approach of strengths-based feedback (which relies on employee affirmation and encouragement). We explain why a strengths-based approach to performance feedback is superior to the weaknesses-centered approach, and offer nine research-based recommendations on how to deliver effective performance feedback employing a strengths-based method. 相似文献
19.
Using social tables, this article provides new data on inequality in Germany and Britain on an annual basis for the first half of the twentieth century. Inequality trends in these two countries tended to follow opposite patterns. The decline in inequality in Germany was interrupted during the First World War and the Nazi period, while in Britain the reversal took place between the end of the First World War and the Great Depression. Results show that the drop in inequality during the twentieth century in Europe did not follow secular trends, thus supporting the notion of inequality cycles. 相似文献
20.
Leon Roets Annali Botha Sarie P. Human Herman Strydom Martha J. Watson 《Development Southern Africa》2016,33(5):613-627
Homelessness in South Africa requires collaborative research. Social, political, cultural and economic factors that cause homelessness must be considered to develop a common definition and understanding of homelessness. South Africa’s social complexity and diversity make it challenging to construct available results into one conceptual framework, and this in turn complicates national policy implementation and role allocation. By means of a rapid critical appraisal of literature on homelessness in South Africa, researchers provide evidence to direct and structure contextual research pertaining to homelessness. Four themes transpire: conceptualisation; demography; roles and responsibilities of key stakeholders; and strategic policy and research issues. Researchers caution that the findings are not generalisable, because of the rapid nature of the appraisal and possible selection bias of the literature. Measures of validity were used to ensure that the study accomplished its purpose through the key results and to ensure that the results are a true reflection of available evidence. 相似文献