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162.
Multilevel models have been widely applied to analyze data sets which present some hierarchical structure. In this paper we propose a generalization of the normal multilevel models, named elliptical multilevel models. This proposal suggests the use of distributions in the elliptical class, thus involving all symmetric continuous distributions, including the normal distribution as a particular case. Elliptical distributions may have lighter or heavier tails than the normal ones. In the case of normal error models with the presence of outlying observations, heavy-tailed error models may be applied to accommodate such observations. In particular, we discuss some aspects of the elliptical multilevel models, such as maximum likelihood estimation and residual analysis to assess features related to the fitting and the model assumptions. Finally, two motivating examples analyzed under normal multilevel models are reanalyzed under Student-t and power exponential multilevel models. Comparisons with the normal multilevel model are performed by using residual analysis. 相似文献
163.
We introduce a new definition of generalized marginal interactions, called marginal nested interactions, which includes baseline, local, continuation and reverse continuation logits and odds ratios as special cases. The significant aspect of this definition is the inclusion of new types of logits and odds ratios that can handle non-ordinal, ordinal and partially ordered categorical variables in a flexible and appropriate way. It is proved also that the marginal nested interactions define a saturated model of a multi-way contingency table. 相似文献
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165.
Fagner C. Rother Wilson F. Rebello Matthew J. F. Healy Mauricio M. Silva Paulo A. M. Cabral Hélio C. Vital Edson R. Andrade 《Risk analysis》2016,36(11):2039-2046
A radiological dispersal device (RDD) is a simple weapon capable of causing human harm, environmental contamination, disruption, area denial, and economic cost. It can affect small, large, or long areas depending on atmospheric stability. The risk of developing a radio‐induced cancer depends on exposure, and an effective response depends upon available timely guidance. This article proposes and demonstrates a convergence of three different capabilities to assess risk and support rapid safe resource efficient response. The three capabilities that are integrated are Hotspot for dispersion, RERF for epidemiological risk, and RESRAD‐RDD for response guidance. The combined methodology supports decisions on risk reduction and resource allocation through work schedules, the designation and composition of response teams, and siting for operations. In the illustrative RDD scenario, the contamination area for sheltering, evacuation, and long‐term public concern was greatest for calm atmospheric conditions, whilst close‐quarter responders faced highest dose rates for neutral atmospheric conditions. Generally, the risks to women responders were found to be significantly greater than for men, and the risks to 20‐year‐old responders were three times that of their 60‐year‐old counterparts for similar exposure. 相似文献
166.
Roberto Cafferata 《Journal of Management and Governance》2010,14(3):199-220
What was the presence of the State-entrepreneur in the Italian economy in the 20th century? Which forms did it assume? What is the weight of the State-entrepreneur in Italy today? Trying to answer these questions, the author carries out an analysis through the historical method. His final thesis is that, notwithstanding the progressive pressures, which started in the 1990s, towards the privatization of national capitalism, the State-entrepreneur is still firmly present in the Italian economy, as if it had always to play a role in the country’s development. The results of the present investigation can turn out to be of interest both to scholars and to policy makers who are committed in the effective implementation of actions aiming at favouring, for the country’s welfare, a careful and balanced relationship between public and private powers. 相似文献
167.
William H.A. Johnson Roberto Filippini 《Journal of Engineering and Technology Management》2013,30(1):95-111
The use of integration practices, both internal (where various functions work together) and external (links with customers and suppliers during development), are espoused in the new product development (NPD) literature. However, empirical findings in the literature suggest adoption of integration practices does not necessarily lead to positive performance. We introduce the concept of integration capabilities to explain the relationship between use of integration practices and NPD performance. We tested a mediation model using data from 141 Japanese and American firms and found that effects of both types of integration on time and product performance were mediated by the integration capabilities developed. We also found differential effects of the type of integration. The findings demonstrate that developing superior integration capabilities are needed for companies to meet and exceed product development expectations in terms of both product and time performance. Simply, a company may utilize integration practices but if it does not utilize them in such a way as to generate real capabilities, the use of integration practices may not lead to positive performance effects. 相似文献
168.
The authors present a qualitative study of voluntary career change, which highlighted the importance of positive emotions, unplanned action, and building certainty and perceiving continuity in the realization of change. Interpretative phenomenological analysis was used to broaden theoretical understanding of real‐life career decision making. The accounts of 8 women who had changed careers were explored, and the analysis supported other‐than‐rational perspectives of career decision making. An action‐affect‐cognition framework of decision making is proposed. The framework adds the role of emotion and the importance of self‐regulation to existing theory of career decision making. Implications for career counseling are discussed. 相似文献
169.
Roberto Motta 《International Review of Sociology》2011,21(1):231-242
It has been said that in Brazil the Catholic Church, by the adoption of the Theology of Liberation, chose the poor, but the poor chose the ever growing churches and sects of Pentecostal derivation. This paradox haunts the sociology of religion, in Brazil and elsewhere. This paper suggests to its solution a hypothesis inspired by Weber's ‘Religious Directions of the World and their Directions’ (the ‘Zwischenbetrachtung’).The social, political and economic efficacy of a given religious movement is essentially linked to its theodicy. In other words, the passage of religion to politics, if understood as the exit from religion as allegedly motivated by religion itself, involves a contradiction as it implies the elimination of its basic religious motivation. The inner-worldly success of a religious tendency depends, therefore, on the persistence of a properly religious ‘rejection of the world’. In fact the whole of the Theology of Liberation movement falls under a certain cognitive penumbra, a kind of theological and philosophical syncretism, which constitutes both its main strength and its main weakness. 相似文献
170.
This article examines how a least developed country-based social business first creates operational capabilities (OCs) and then, over time, builds innovative capabilities (ICs) to fulfil a social need, be self-sustainable and achieve inclusive innovation. This relationship is examined in Bangladesh's Grameen Danone Foods Limited (GDFL) by integrating the technological capability and inclusive innovation theoretical frameworks and by using data gathered through extensive fieldwork. Broadly, our findings show how GDFL built and accumulated basic and intermediate ICs to undertake innovative activities in all areas of operation. Specifically, our findings scrutinize the process in which a social business develops and organizes its resources to initially build OCs and engage in the creation of ICs through various learning mechanisms to deliver inclusive innovation. From this process, we also observe a set of unpredicted positive spillovers to the community, which expands the inclusiveness effect. The findings also suggest that having a social orientation, triggers the use of different resources from within and outside the firm to achieve inclusive innovation. We conclude by discussing the study's implications for scholars, policy-makers and managers of multinational's social businesses. We also highlight future research areas, and crucially those related to key emerging conceptual limitations of inclusive innovation and development. 相似文献