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This study examines the development of economic democracy in the United States since the 1700s with particular emphasis on the last 30 years. The particular focus is on employee ownership, although the phenomenon of profit sharing receives some attention. The nature of research and documentation on the subject is reviewed. The study concludes that research in the area has emphasized narrative studies of particular companies and sectors until the 1980s. At that time the support for the concept by the US Federal Government created reporting requirements for companies to the US Department of Labor and the US Internal Revenue Service (the taxation authority) and the US Securities and Exchange Commission. These data-sets have made systematic research on the phenomenon possible. Results of the first national random sample of employed individuals and work sites on the incidence of employee ownership and profit sharing are presented. Finally, we conduct a political economic analysis of the phenomenon. We demonstrate that, despite the growth of employee ownership in particular, a form of employee ownership has developed which encourages workers to use their savings to buy stock in their companies. This form dominates employee ownership in terms of the number of workers, firms, and dollar assets involved. Nevertheless, there is significant employee ownership in a group of closely held firms that use traditional ESOPs (Employee Stock Ownership Plans) and in a group of publicly traded high technology companies that use broad-based stock options. These two sectors offer fertile territory for the development of both economic democracy and nascent forms of industrial democracy.  相似文献   
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This article is written in recognition of the need for dialogue between organization theory and other disciplines and languages. It uses some concepts coined by Hannah Arendt to develop reflection concerning organizational dynamics. Arendt's category of action, as different from both labour and work, makes possible to define, in an original way, the political dimension of organizational action. The category of thought, again, as defined by Arendt, allows us to highlight the production of meaning which takes place in organizations. With the help of those two concepts, the author develops a notion of organizational learning as a process where the political and cognitive dimensions of organizational action are strongly interrelated.  相似文献   
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Shiftwork-induced sleep deprivation and circadian disruption probably leads to an increase in the production of cytokines and dysregulation of innate immune system, respectively. This project aims evaluating changes in salivary IL-1 beta, cortisol, and melatonin in night workers. Method. Two day and three night healthy workers participated in this study. Sleep was evaluated by actimetry and activity protocols. Saliva was collected at waking and bedtime the last workday and the following two days-off and was analyzed by ELISA. Results. Neither sleep duration nor efficiency showed any association with salivary IL-1beta. IL-1beta levels were higher at waking than at bedtime during working days for all workers, but only one day and one night-worker maintained this pattern and hormone rhythms during days off. For this night worker, melatonin levels were shifted to daytime. A second one presented clear alterations in IL-1beta and hormone rhythms on days-off. Conclusions. Our preliminary results suggest that night work can disturb the variation pattern of salivary IL-1beta. No association of this variation with sleep was observed. It seems that disruption in hormone rhythms interfere with salivary IL-1beta production. IL- 1beta production pattern seems to be maintained when rhythms are present, in spite of a shift in melatonin secretion.  相似文献   
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Mobile instant messaging services (MIMS) are emerging as important digital environments in citizens’ everyday lives. We explore the use of MIMS for talking about politics with unique survey data on samples representative of Internet users in Germany, Italy, and the UK. First, we show that robust percentages of our respondents who use MIMS employ them for posting political messages and discussing politics. Second, we demonstrate that political talk on MIMS is positively associated with users’ tendency to censor themselves politically on social networking sites (SNS) and, to a lesser extent, with ideological extremism. Third, we find that the association between self-censorship on SNS and the likelihood of publishing political contents on MIMS is stronger for individuals living in former East Germany where, due to historical reasons, large segments of the population are reluctant to talk about politics in public. Our findings suggest that MIMS make a distinctive contribution to contemporary repertoires of political talk, with important implications for the quality and inclusiveness of interpersonal political discussion.  相似文献   
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Transition models are an important framework that can be used to model longitudinal categorical data. A relevant issue in applying these models is the condition of stationarity, or homogeneity of transition probabilities over time. We propose two tests to assess stationarity in transition models: Wald and likelihood-ratio tests, which do not make use of transition probabilities, using only the estimated parameters of the models in contrast to the classical test available in the literature. In this paper, we present two motivating studies, with ordinal longitudinal data, to which proportional odds transition models are fitted and the two proposed tests are applied as well as the classical test. Additionally, their performances are assessed through simulation studies. The results show that the proposed tests have good performance, being better for control of type-I error and they present equivalent power functions asymptotically. Also, the correlations between the Wald, likelihood-ratio and the classical test statistics are positive and large, an indicator of general concordance. Additionally, both of the proposed tests are more flexible and can be applied in studies with qualitative and quantitative covariates.  相似文献   
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Semiparametric Bayesian models are nowadays a popular tool in event history analysis. An important area of research concerns the investigation of frequentist properties of posterior inference. In this paper, we propose novel semiparametric Bayesian models for the analysis of competing risks data and investigate the Bernstein–von Mises theorem for differentiable functionals of model parameters. The model is specified by expressing the cause-specific hazard as the product of the conditional probability of a failure type and the overall hazard rate. We take the conditional probability as a smooth function of time and leave the cumulative overall hazard unspecified. A prior distribution is defined on the joint parameter space, which includes a beta process prior for the cumulative overall hazard. We first develop the large-sample properties of maximum likelihood estimators by giving simple sufficient conditions for them to hold. Then, we show that, under the chosen priors, the posterior distribution for any differentiable functional of interest is asymptotically equivalent to the sampling distribution derived from maximum likelihood estimation. A simulation study is provided to illustrate the coverage properties of credible intervals on cumulative incidence functions.  相似文献   
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