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This study attempts to enhance our understanding of the inconsistencies reported in the literature concerning the relationship between work overload and work outcomes. We tested the proposition that work overload should be divided into two constructs based on its source: self-initiated overload (SIO), and organization-imposed overload (OIO). Based on the work stress and job crafting literatures, we expected that SIO and OIO would tend to relate differentially to the work outcomes of job satisfaction, emotional exhaustion, work–family conflict, job performance, and helping organizational citizenship behaviours. A study was conducted using three samples, the first consisting of full-time employed students in three countries (N?=?116), the second consisting of the nursing staffs of six private hospitals in Switzerland, and the third consisting of 161 middle manager–supervisor dyads in Switzerland. Two different measures of SIO and OIO were used. SIO was found to have a more beneficial relationship with the work outcomes than OIO, general supporting our hypothesis. Theoretical and practical implications are discussed. 相似文献
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Charismatic leaders have consistently been shown to affect followers' performance, motivation, and satisfaction. Yet, what precisely constitutes charisma still remains somewhat enigmatic. So far, research has mainly focused on leader traits, leader behaviors, or the leader follower-relationship, and the subsequent consequences of each on followers' self-concepts. All of these approaches share the notion that leader charisma depends on an explicit interaction between leader and follower. With the present review paper, we extend extant theorizing by arguing that charisma is additionally informed by embodied signals that flow directly from either the leader or the immediate environment. We introduce the embodiment perspective on human perception and describe its utility for theoretically understanding the charismatic effect. Correspondingly, we review studies that show which concrete embodied cues can support the charismatic effect. Finally, we discuss the variety of new theoretical and practical implications that arise from this research and how they can complement existing approaches to charismatic leadership. 相似文献
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Uncertainty about the future course of the economy is a potential driver of aggregate fluctuations. To identify the distinct dimensions of uncertainty in the macroeconomy, we construct a large dataset covering all types of economic uncertainty. We then identify two fundamental factors that account for the common dynamics in this dataset. These factors are interpreted as macroeconomic uncertainty. The first factor captures business cycle uncertainty, while the second factor represents oil and commodity price uncertainty. While both types of uncertainty generate a decline in output, time‐varying oil and commodity price uncertainty is more important for fluctuations in real activity. However, nonlinearities seem to amplify the effect of business cycle uncertainty during the global financial crisis. (JEL C32, C38, E32) 相似文献
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This study compares work time data collected by the German Time Use Survey (GTUS) using the diary method with stylized work
time estimates from the GTUS, the German Socio-Economic Panel, and the German Microcensus. Although on average the differences
between the time-diary data and the interview data is not large, our results show that significant deviations exist between
these two techniques for certain types of individuals, especially those with long working hours and flexible work schedules.
We also show that stylized work time estimates have insufficient variation to reproduce a true picture of working hours. 相似文献
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Complexity analysis for maximum flow problems with arc reversals 总被引:1,自引:1,他引:0
Steffen Rebennack Ashwin Arulselvan Lily Elefteriadou Panos M. Pardalos 《Journal of Combinatorial Optimization》2010,19(2):200-216
We provide a comprehensive study on network flow problems with arc reversal capabilities. The problem is to identify the arcs
to be reversed in order to achieve a maximum flow from source(s) to sink(s). The problem finds its applications in emergency
transportation management, where the lanes of a road network could be reversed to enable flow in the opposite direction. We
study several network flow problems with the arc reversal capability and discuss their complexity. More specifically, we discuss
the polynomial time algorithms for the maximum dynamic flow problem with arc reversal capability having a single source and
a single sink, and for the maximum (static) flow problem. The presented algorithms are based on graph transformations and
reductions to polynomially solvable flow problems. In addition, we show that the quickest transshipment problem with arc reversal
capability and the problem of minimizing the total cost resulting from arc switching costs are
NP\mathcal{NP}
-hard. 相似文献
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