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Abstract. A goodness‐of‐fit test for continuous‐time models is developed that examines if the parameter estimates are consistent with another for different sampling frequencies. The test compares parameter estimates obtained from estimating functions for downsamples of the data. We prove asymptotic results for stationary and ergodic processes, and apply the downsampling test to linear drift diffusions. Simulations indicate that the test is quite powerful in detecting non‐Markovian deviations from the linear drift diffusions. 相似文献
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Abstract. We introduce a flexible spatial point process model for spatial point patterns exhibiting linear structures, without incorporating a latent line process. The model is given by an underlying sequential point process model. Under this model, the points can be of one of three types: a ‘background point’ an ‘independent cluster point’ or a ‘dependent cluster point’. The background and independent cluster points are thought to exhibit ‘complete spatial randomness’, whereas the dependent cluster points are likely to occur close to previous cluster points. We demonstrate the flexibility of the model for producing point patterns with linear structures and propose to use the model as the likelihood in a Bayesian setting when analysing a spatial point pattern exhibiting linear structures. We illustrate this methodology by analysing two spatial point pattern datasets (locations of bronze age graves in Denmark and locations of mountain tops in Spain). 相似文献
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ABSTRACTReligious education and intercultural education are seen by some to be in tension with each other, and by others as two sides of the same coin. The explanations for this unsettled relationship may be found in the different histories of the two fields. Intercultural education has become a cross curricular priority, resulting from rather recent developments marked by cultural complexity, following globalisation and migration processes of the last 50 years or so. Religious education has a long history of being a distinct school subject, much influenced by differing national and religious cultural heritages and which, during the last half century, has begun to address the issues of religious and world view diversity. In several countries today, religious education in the publicly funded school is conceived as non-confessional and deals with a diversity of religions and world views. Religious education may be the subject where socio-cultural differences are most visible and where the challenges of diversity are put to the test. This raises a series of challenges to curriculum designers and teachers in classrooms; the article will address some of them and suggest ways forward for teacher education and school practice. 相似文献
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The aim of the present study was to investigate the effect of a short-term participatory intervention in health care institutions in Norway on workers' control, other job characteristics, job stress, subjective health and job satisfaction. Participants (including managers and supervisors) were randomly allocated to intervention groups and to a control group. Actions to solve problems based on the employees' own perceptions of the main problems were seen as the key motivators for organizational improvement and increased control at the task and office level in the work situation. The main stressors identified by the participants in this study were lack of information, communication and respect between professions, as well as the need for professional and personal development. The participatory intervention had a positive, but limited effect on work-related stress, job characteristics, learning climate and management style, and seemed to have started a beneficial change process. There were no negative short-term effects on work-related stress and job demands. Organizational interventions may be a potential training ground for acquiring participatory skills and resources, and if sustained after the intervention period, they can have long-term effects on problem solving, job stress and employee satisfaction. 相似文献
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Despite a voluminous literature, business model research continues to be plagued with problems. Those problems hinder theory development and make it difficult for managers to use research findings in their decision-making. In our article, we seek to make three contributions. First, we clarify the theoretical foundations of the business model concept and relate them to the five elements of a business model: customers, value propositions, product/service offerings, value creation mechanisms, and value appropriation mechanisms. A clear definition of a business model enables theory to develop systematically and provides coherent guidance to managers. Second, we suggest that value configuration is a contingency variable that should be included in future theorizing and model building. Each of the elements of a business model is affected by a firm's value configuration depending on whether the firm is a value chain, value shop, or value network. Third, we link business models to organization design. We show how organization design is affected by value configuration and how new collaborative organizational forms enable open and agile business models. We derive the implications of our analysis for future research and management practice. 相似文献