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21.
Previous research shows that work ability of nurses decreases with age. In our study we therefore addressed the following questions: Do successful ageing strategies at work in terms of selection, optimization, and compensation (SOC) support the work ability of nurses? Does SOC mediate the relationship between job control (i.e., decision opportunities at work) and work ability? Does the mediation differ between age-groups? 438 nurses (Age Range 21-63 years) completed a questionnaire in the course of an employee survey. Results show that SOC is positively related with work ability. The positive effect of job control on work ability is significantly mediated by SOC. There are stronger mediating effects for elder nurses than for younger nurses. Results indicate that the interplay of job control and SOC at work helps to maintain the work ability of nurses in nursing care. 相似文献
22.
Jørgen Drud Hansen Hassan Molana Catia Montagna Jørgen Ulff-Møller Nielsen 《Journal of Socio》2012,41(3):317-326
We examine how openness interacts with the coordination of consumption–leisure decisions in determining the equilibrium working hours and wage rate when there are leisure externalities (e.g., due to social interactions). The latter are modelled by allowing a worker's marginal utility of leisure to be increasing in the leisure time taken by other workers. Coordination takes the form of internalising the leisure externality and other relevant constraints (e.g., labour demand). The extent of openness is measured by the degree of capital mobility. We find that: coordination lowers equilibrium work hours and raises the wage rate; there is a U-shaped (inverse-U-shaped) relationship between work hours (wages) and the degree of coordination; coordination is welfare improving; and, the gap between the coordinated and uncoordinated work hours (and the corresponding wage rates) is affected by the extent and nature of openness. 相似文献
23.
Jürgen Wandel Vladislav Valentinov 《Voluntas: International Journal of Voluntary and Nonprofit Organizations》2014,25(1):138-149
This paper examines the nonprofit sector from the perspective of the Austrian school of economic thought. In contrast to the traditional market failure approach, the Austrian school locates the role of the nonprofit sector in the facilitation of the spontaneous order and the utilization of local dispersed knowledge about the societal needs through a Hayekian “discovery procedure.” Another contribution of the Austrian school is in calling attention to the “calculation challenge” faced by the nonprofit sector, i.e., the reduced role of monetary signals as the informational basis for decision making. The calculation challenge brings up the important issue of societal feedback mechanisms operating in the nonprofit sector. It is shown that, in the nonprofit sector context, this challenge takes the form of the accountability problem. 相似文献
24.
Katrin Auspurg Thomas Hinz Jürgen Güdler 《KZfSS K?lner Zeitschrift für Soziologie und Sozialpsychologie》2009,61(3):469-474
We reply to the critical comments of Richard Münch and the author group Jansen, Heidler and von Goetz on our article “Emergence of an Academic Elite? The Impact of Universities’ Size and Reputation on Research Funding” published in this journal. After reviewing some other sociologists’ statements on Münch’s thesis about the academic elite we reinforce the gain of our empirical analyses of hypotheses of the sociology of science in general, on the Matthew-Effect, and on trends to a possible cartelization and monopolization in the German science system. The main critic of unsuited data (we used applications for single grants submitted to the German Research Foundation) does not adequately consider the postulated scope of the investigated theses and our analyses do not aim at a general evaluation of the “Initative of Excellence”. 相似文献
25.
In this paper we show the exact estimability of the transfer functions of linear stochastic systems under two sets of conditions.The main point is to demonstrate the measurability of the “identifying” function.The estimability od the transfer functions is not only of interest for its own but also for the estimability of the system parameters. 相似文献
26.
Felix Wolter Jürgen Schiener 《KZfSS K?lner Zeitschrift für Soziologie und Sozialpsychologie》2009,61(1):90-117
The claim for lifelong learning or vocational further training is most often set out without having clarified satisfactorily the individual gains which result from training activities. Based on human capital theory, which we extend by arguments from signaling- and game theory, the paper investigates for western and eastern Germany individual returns of training on income with longitudinal data (1996–1998) from the recently available “Mikrozensus-Panel”. A problem in identifying causal training effects is a selection bias caused by unobserved heterogeneity which – using conventional methods – leads to overestimation of the effects. Fixed- and Random-Effects-Models – which we discuss and confront empirically regarding the training issue – present a method for controlling the selection bias. The results show evidence for positive and significant training effects on income, although the actual amount of income growth is low. Whereas no differences by sex were found, separate analyses by age, skill levels and region indicate that not all of the subgroups benefit positively from further training activities. Therefore, the findings relativize the importance of social inequalities in the access to further training for the process of status attainment in general. 相似文献
27.
28.
Jürgen H. Breuste 《Urban Ecosystems》2013,16(4):801-818
The investigation of the urban street trees was undertaken in the oasis city Mendoza, Argentina. The analysis included 1,680 urban street trees in their structure (species, age, and spatial structure), vitality and irrigation conditions. A questioning of 120 residents analysed the perception and acceptance of the urban trees by urban dwellers. Different urban structures, residential, commercial and residential mixed structures and the city centre were investigated. The results show clearly the insufficient maintenance of the trees (composition, aging, irrigation, pruning etc.) and damaged irrigation system with leads to a loss of vitality. The questioning showed that easily recognisable problems (insufficient pruning etc.) are more reflected by people than long term problems (irrigation). There is a different reflection of urban street tree problems in the different urban areas, related to status, information level and management. The maintenance and relation to urban street trees was best in the residential area. Not only better maintenance of the trees but also a clearer recognition of street tree problems by residents and by the responsible municipal institutions is urgently needed. A public-private partnership and more environmental education could help to overcome the problems. 相似文献
29.
30.
To explain country differences in an analytical or structural dependent variable, the application of a macro–micro-model containing contextual hypotheses is necessary. Our methodological study examines whether empirical studies apply such a model. We propose that a theoretical base for country differences is well described in multilevel studies, but aggregate and individual data analyses fail to specify contextual hypotheses ex ante (in the theory section of an article) and instead elaborate on macro–micro explanations ex post (in the discussion section). To test our assumptions, we analyzed 22 studies published in journals cited in the Social Science Citation Index between 2007 and 2010, which compare countries with respect to life satisfaction. Results are in accordance with our expectations. We conclude that cross-country comparisons should apply a macro–micro-model theoretically and empirically, if possible, and include the meso level, if appropriate. In case of insufficient data (i. e. only individual level or aggregate level data), applying a macro–micro-model theoretically may prevent premature conclusions. 相似文献