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1.
Brand  Kevin P.  Rhomberg  Lorenz  Evans  John S. 《Risk analysis》1999,19(2):295-308
The prominent role of animal bioassay evidence in environmental regulatory decisions compels a careful characterization of extrapolation uncertainties. In noncancer risk assessment, uncertainty factors are incorporated to account for each of several extrapolations required to convert a bioassay outcome into a putative subthreshold dose for humans. Measures of relative toxicity taken between different dosing regimens, different endpoints, or different species serve as a reference for establishing the uncertainty factors. Ratios of no observed adverse effect levels (NOAELs) have been used for this purpose; statistical summaries of such ratios across sets of chemicals are widely used to guide the setting of uncertainty factors. Given the poor statistical properties of NOAELs, the informativeness of these summary statistics is open to question. To evaluate this, we develop an approach to calibrate the ability of NOAEL ratios to reveal true properties of a specified distribution for relative toxicity. A priority of this analysis is to account for dependencies of NOAEL ratios on experimental design and other exogenous factors. Our analysis of NOAEL ratio summary statistics finds (1) that such dependencies are complex and produce pronounced systematic errors and (2) that sampling error associated with typical sample sizes (50 chemicals) is non-negligible. These uncertainties strongly suggest that NOAEL ratio summary statistics cannot be taken at face value; conclusions based on such ratios reported in well over a dozen published papers should be reconsidered.  相似文献   

2.
For decades, it has been a per se violation of U.S. antitrust law for manufacturers or distributors to specify retail selling prices. In the spirit of atomistic, unrestrained competition, retailers were free to set prices without undue interference from upstream channel participants. Attempts by manufacturers or other channel participants to restrict retail price setting initiatives were viewed by regulators as an unwarranted and illegal interference with the market mechanism. Restrictions on price setting initiatives would, it was argued, lessen competition and ultimately raise prices above competitive levels to the detriment of consumers. Recently, under the leadership of newly appointed Chief Justice Roberts, a more “business friendly” Supreme Court has reversed this policy; vertical price fixing is no longer a per se violation of U.S. antitrust law. By a five‐to‐four margin, the Court held in Leegin Creative Leather Products that manufacturers could, under certain circumstances, establish binding retail selling prices. Henceforth, retail price setting restrictions will be subject to a rule of reason evaluation whereby price restrictions will be assessed on a case‐by‐case basis. Proponents of the now‐legal restrictions argue that this will ensure that merchandise sold through retail outlets will receive needed support, free riding will be reduced or eliminated, and new brand introduction will be facilitated. Critics argue that the Court's decision marks a return to the days of fair trading; marginal firms will be protected, so‐called “inframarginal consumers” will be forced to pay for services they do not want or need, and prices for many branded products will rise, all to the detriment of consumer welfare.  相似文献   

3.
Past research on leader self-sacrifice has focused entirely on the effects of this leader behavior on followers and its implications for organizations. The present research focused on antecedents of leader self-sacrifice. We argued that self-sacrifice is positively influenced by leaders' sense of belongingness to the group they supervise. Furthermore, leaders' subjectively sensed power can serve as a moderator of this effect. We expected this because a high sense of power is known to facilitate goal pursuit. Given that organizational goals often prescribe serving the interests of the organization, leaders' sense of belongingness should promote self-sacrifice particularly among leaders low in subjective power; leaders high in subjective power should display self-sacrifice regardless of their sense of belongingness. Two field studies supported these predictions. A final experiment supported a critical assumption underlying our argument in showing that the sense of power × sense of belongingness interaction is restricted to situations that prescribe cooperative goals. When situations prescribe competitive goals, this interaction was absent.  相似文献   

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The present study examined the career advancement prospects of MIS and non-MIS employees, as well as the relationships of career advancement prospects with job performance evaluations, job satisfaction, career satisfaction, and organizational commitment for MIS and non-MIS professionals and managers. Participants included 134 MIS professionals and managers and 397 non-MIS professionals and managers of a large communications company. The results provided no evidence that MIS employees experience more restricted career advancement prospects than non-MIS employees. In addition, job performance evaluations generally had positive effects on career advancement prospects; career advancement prospects had a number of positive effects on job satisfaction, career satisfaction, and organizational commitment; and job satisfaction and career satisfaction had positive effects on organizational commitment. These findings are related to prior research, suggestions for future research are offered, and implications for the management of MIS employees are identified.  相似文献   

6.
Leadership and strategic management research suggests that the extent to which CEOs influence performance largely depends on the presence or absence of certain factors. These factors may include the characteristics of the task at hand, subordinates, the organization itself or the external environment. Among these factors, a fundamental contingency that has received little empirical attention is an organization's ownership and governance structure—that is, who owns and monitors the organization. In this paper, we outline how different ownership and governance structures can present the opportunity for, or limit, leader influence and empirically examine the extent to which CEO effects on financial performance depend on these structures. Examining organizations in the same industry but with different ownership and governance structures, our results suggest that these structures are closely aligned with the degree to which CEOs influence firm performance. Our findings support the notion that leaders matter most when ownership and governance structures correspond with a weak or ambiguous institutional logic. This study contributes new insight into the “opportunity structure” of CEO influence, that is, the organizational factors that shape leader discretion and, hence, condition the CEO's level of influence over firm performance.  相似文献   

7.
Cross-national studies of job stress have not kept pace with other streams of research in the international milieu. To begin to address this lack of development, we examined the relationships among role stressors, general self-efficacy (GSE), and burnout across nine regions (i.e., U.S., Germany, France, Brazil, Israel, Japan, China, Hong Kong, and Fiji). Findings indicated GSE had a universally negative association with burnout across all regions. Further, self-efficacy mediated the relationship between role conflict and/or role ambiguity and burnout across eight of the nine cultures. Conclusions center around how low self-efficacy may help to explain why occupational role stressors have a positive association with burnout cross-nationally. Implications and directions for future research are discussed.  相似文献   

8.
The successful foundation of entrepreneurial firms comprises a multitude of complementary human tasks. The effect of founders’ human capital on firm success hinges on the information structure that prevails when nascent entrepreneurs are matched in partnerships. Empirically, we assume that rational matching occurs in incubated spin-offs and corporate-sponsored ventures. The human capital structure in such firms significantly differs from that of Greenfield projects. Using coarsened exact matching (CEM), we compute weights to level out these differences in human capital endowments. The impact of corporate support in founding the new firm is positive and increases as CEM-weights are applied to more of our human capital variables.  相似文献   

9.
This paper is a challenge from a pair of lifelong technical specialists in risk assessment for the risk-management community to better define social decision criteria for risk acceptance vs. risk control in relation to the issues of variability and uncertainty. To stimulate discussion, we offer a variety of straw man proposals about where we think variability and uncertainty are likely to matter for different types of social policy considerations in the context of a few different kinds of decisions. In particular, we draw on recent presentations of uncertainty and variability data that have been offered by EPA in the context of the consideration of revised ambient air quality standards under the Clean Air Act.  相似文献   

10.
This study examined the psychological processes that might underlie the relationship between transformational leadership (i.e., individualized consideration and charisma) and individual- and group-level multifocal organizational citizenship behaviors (OCBs). In doing so, we focused on the potential mediating role of individual- and group-level justice perceptions of a follower(s) in transformational leadership processes. Specifically, we hypothesized that at the individual level, a leader's individualized consideration relates to leader-directed OCBs through interpersonal justice, whereas at the group level, a leader's charisma relates to group-directed OCBs through procedural justice climate. The individual- and group-level models as well as the various alternative models were tested using a sample of 159 employees (including 40 supervisors and their immediate subordinates) embedded in 40 groups from 25 branches of a large, multinational bank in Korea. The results supported our hypothesized relationships, suggesting that individual- and group-level justice perceptions play important roles in the linkage between transformational leadership behaviors and OCBs at both the individual and the group levels.  相似文献   

11.
In times of saturated markets and decreasing product life cycles, the continuous development and successful launch of innovations are essential for profit-oriented organizations of any kind. Interorganizational cooperation enables companies to get better access to knowledge and capabilities in order to generate and successfully introduce innovations. While scientific research and management practice have acknowledged the importance of cooperation, little research effort is dedicated to empirically determine the effectiveness of cooperation intensity within different stages of the innovation process (cooperation stage) and with different partners (cooperation type). This article aims to fill these gaps by empirically examining the effects of cooperation intensity with different kinds of partners (horizontal, vertical and institutional cooperation) in different stages of new product development (concept and product development as well as implementation stage) on innovation capabilities and success of individual companies. Drawing upon a sample of 154 high-tech companies from the German B-2-B sector, our results reveal that it is in general beneficial for a company to cooperate. However, cooperation in concept and product development primarily improves a company's innovation capabilities while cooperation in the implementation stage primarily enhances innovation success of a company. With respect to cooperation type, vertical, horizontal as well as institutional cooperation significantly enhance innovation capabilities and success of a company. However, cooperation with institutional partners was found to be the most important contributor throughout all stages.  相似文献   

12.
This paper analyses regional labour market adjustment in the Finnish provinces during 1971–96. It investigates the interrelations of employment, unemployment and labour force participation to examine how a change in labour demand is adjusted to. The study questions the usual assumption that positive and negative shocks evoke similar adjustment processes. Instead, we test for the possibility that the effects of positive and negative shocks are asymmetric. The analysis reveals that there is little asymmetry in the adjustment to region‐specific labour demand shocks, but adjustment to total (region‐specific plus common component) shocks displays more asymmetry. The region‐specific component of a labour demand shock has short‐lived effects on unemployment and participation, and its effect on employment is very small but permanent [persistent?]. Initially, most of the fall in employment is absorbed by the unemployment and participation rate, but after a few years migration plays a larger role in the adjustment process.  相似文献   

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This paper analyses the relationships between the autonomy and regulation of state agencies in Norway, Ireland and Flanders (Belgium). The empirical basis is provided by broad surveys of public sector organizations carried out in 2002–2004. Three hypotheses on these relationships are formulated and examined, indicating different patterns. The reinforcement hypothesis, stating a negative relationship does not get any support. On the other hand, the compensation hypothesis, stating a positive relationship gets some support. In general, however, the indifference hypothesis, stating low or no correlations seems to be the most adequate. The hypotheses are also linked to prevalent administrative doctrines, and the empirical findings indicate how relevant they are.
Paul G. RonessEmail:

Paul G. Roness   has a doctoral degree in Social Sciences (University of Bergen) and is a professor at the Department of Administration and Organization Theory, University of Bergen. His research interests are related to organization theory, administrative reforms in central government and state employees’ unions. He is involved in several international research networks on these issues. His publications include several books, book chapters and articles in, among others, Financial Accountability and Management, International Journal of Human Resource Management, International Public Management Journal, International Review of Administrative Sciences, Journal of Legislative Studies and Scandinavian Political Studies. Koen Verhoest   has a doctoral degree in Social Sciences (K.U.Leuven 2002) and is an assistant professor at the Public Management Institute, Katholieke Universiteit Leuven. His research interests include government control, organization, marketization and governance. He is involved in several international research networks on these issues, and is co-chairing the EGPA Study Group on Governance of Public Sector Organizations. His publications include several book chapters and articles in, among others, Governance, Policy Studies Journal and Public Administration and Development. Kristin Rubecksen   is a doctoral candidate at the Department of Administration and Organization Theory, University of Bergen. Her main research interests are on public management reform, and particularly on autonomy and regulation of agencies. Her publications include articles in Financial Accountability and Management, International Public Management Journal and Scandinavian Political Studies. Muiris MacCarthaigh   has a PhD in politics (University College Dublin 2004) and is a researcher at the Institute of Public Administration, Dublin. His research interests include public service values, accountability regimes and the corporate governance of state-owned enterprises. His publications include several books, book chapters and journal articles, among the most recent ones a textbook titled Government in Modern Ireland.  相似文献   

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Drawing upon conservation of resources theory, this research examines the linkage between abusive supervision and work withdrawal from a stress perspective, focusing on the moderating role of subordinates' emotion-regulation strategies and the mediating role of emotional exhaustion. Survey data included 254 ranked officers in 55 workgroups of the Taiwan Ministry of National Defense. The HLM results suggest that subordinates' emotional exhaustion mediated the relationship between abusive supervision and work withdrawal only when subordinates engaged in high-frequency expressive suppression or low-frequency cognitive reappraisal. Theoretical and practical implications are discussed.  相似文献   

17.
This study examines the impacts of different types of experience on management skills of working adults in Russia. The study is based on a sample of 527 MBA students, line and middle managers covering 32 regions in 13 different industries in Russia. This study proves that work experience, management experience, and government experience are significant factors in their technical, human, and conceptual skills. Human skills scores are significantly higher for all groups than group with no management experience. Score for human skills increased with years of government experience only, but not with working or management years of experience.  相似文献   

18.
Through a team-level analysis, the study shows how authentic leadership (AL) predicts team potency both directly and through the mediating role of team virtuousness and team affective commitment. Data about AL and team virtuousness were collected two months before data collection on team affective commitment and team potency. Fifty-one teams were selected for testing the hypotheses. The main findings are the following: (a) AL predicts team affective commitment through the mediating role of team virtuousness; (b) team virtuousness predicts team potency through the mediating role of team affective commitment; (c) AL predicts team potency through the mediating role of team virtuousness and team affective commitment. By focusing on two positive constructs (AL and team virtuousness), for which interrelations have rarely been explored, the study contributes to the Positive Organizational Scholarship movement, and suggests that AL and virtuousness are good in themselves and also potential facilitators of team success.  相似文献   

19.
While management accounting (MA) implies potential benefits for large established companies, its usefulness for young and small companies is less clear. This review analyzes and partially resolves the paradox and provides a structured overview of present knowledge. A systematic literature search yielded 67 empirical papers in 25 journals. Drawing on the results of a two‐step coding process, this study proposes 20 novel second‐level constructs expressing the types of MA, their antecedents and their consequences in young and small companies. The main results show that, in discussing MA, the literature refers mainly to business planning, accounting‐based management control activities and financial accounting. Most studies find MA to be helpful for young and small companies because it provides tools to overcome difficulties arising from company growth and reduces information asymmetry with external partners. Overall, however, the empirical literature on this topic is highly concentrated, offers theoretical construct definitions of poor quality, and lacks a clear statement of what MA really does in young and small companies. Therefore, future research and theory development are warranted.  相似文献   

20.
Using bibliometric analysis of published work, we examine the discursive trends, patterns and implications of three different anti‐discrimination solutions (equality, diversity and inclusion) over a 40‐year period from 1970 to 2010. The findings reveal that the anti‐discrimination discourses are consistent with management fashions, in terms of both their trends and the rhetorical strategies used by proponents to establish the dominance of their favoured approach, particularly by denigrating previous approaches. Practitioner‐facing academics play a key role in the process by giving shape, exposure and credibility to the anti‐discrimination solutions, but not in creating them. Only by breaking free of the oppositional discursive patterns can the debate move on to anti‐discrimination solutions that attempt to blend together equality, diversity and inclusion.  相似文献   

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