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31.
We formulate a two-period life cycle model of saving, labor supply, and human capital investment when individuals differ in their ability and initial wealth. Borrowing constraints result in sub-optimal choices for consumption and investments in human capital. We analyze optimal linear income taxes and education subsidies. The optimal income tax is shown to be positive—even in the absence of any redistributional concerns. A redistributive income tax relaxes borrowing constraints by redistributing resources from the unconstrained to the borrowing constrained stages of the life cycle. The income tax thus alleviates preexisting non-tax distortions in the capital market. Human capital is subsidized on a net basis in the absence of redistributional concerns. Education subsidies help to relax credit constraints and to reduce distortions from explicit and implicit taxes on human capital formation. When redistributional concerns are present, education is subsidized more if this helps to alleviate distortions on labor supply, but is subsidized less if education subsidies have a very regressive incidence. Simulations demonstrate that optimal income taxes are substantially higher when credit constraints are present. Education is generally subsidized on a net basis, and the more so if credit constraints are more severe. 相似文献
32.
In most countries, mainstream economic policy has not yet undergone any significant change, and there is little consensus on what, if anything, ought to replace it. However, there are some signs of an emerging transition, at several levels. 相似文献
33.
Peter Christoffersen Vihang Errunza Kris Jacobs Xisong Jin 《International Journal of Forecasting》2014
Forecasting the evolution of security co-movements is critical for asset pricing and portfolio allocation. Hence, we investigate patterns and trends in correlations over time using weekly returns for developed markets (DMs) and emerging markets (EMs) over the period 1973–2012. We show that it is possible to model co-movements for many countries simultaneously using BEKK, DCC, and DECO models. Empirically, we find that correlations have trended upward significantly for both DMs and EMs. Based on a time-varying measure of diversification benefits, we find that it is not possible to circumvent the increasing correlations in a long-only portfolio by adjusting the portfolio weights over time. However, we do find some evidence that adding EMs to a DM-only portfolio increases diversification benefits. 相似文献
34.
An implicit assumption in most works on change recipient reactions is that employees are self-centred and driven by a utilitarian perspective. According to large parts of the organizational change literature, employees’ reactions to organizational change are mainly driven by observations around the question ‘what will happen to me?’ We analysed change recipients’ reactions to 26 large-scale planned change projects in a policing context on the basis of 23 in-depth interviews. Our data show that change recipients drew on observations with three foci (me, colleagues and organization) to assess change, making sense of change as multidimensional and mostly ambivalent in nature. In their assessment of organizational change, recipients care not only about their own personal outcomes, but go beyond self-interested concerns to show a genuine interest in the impact of change on their colleagues and organization. Meaningful engagement of employees in organizational change processes requires recognizing that reactions are not simply ‘all about me’. We add to the organizational change literature by introducing a behavioural ethics perspective on change recipients’ reactions highlighting an ethical orientation where moral motives that trigger change reactions get more attention than is common in the change management literature. Beyond the specifics of our study, we argue that the genuine concern of change recipients for the wellbeing of others, and the impact of the organizations’ activities on internal and external stakeholders, needs to be considered more systematically in research on organizational change. 相似文献
35.
Increasingly, govemments and firms take clusters of related business as a starting point to formulate policies and strategies, which aim at enhancing innovation. There appear, however, to be quite some different conceptions of what clusters are, In the first part of this paper and attempt is made to clarify the cluster concept by defining the relevant dimensions of clusters. In the second part, each of these dimensions is related to possible industrial policies and firm strategies. Practical illustrations will be given from different European countries and firms. The dimensions and related policies and strategies form a menu of possibilities from which actors can choose those elements that are most relevant for their specific situation. Thus, tailor-made policies and strategies can be devised and implemented. 相似文献
36.
Jacobs JA 《Hospital materiel management quarterly》1995,16(4):18-24
Major change is always costly, but when maintaining the status quo is even more expensive, a strategic imperative for change has been created. The process of managing change is not focused on what to change, but how change decisions can be implemented successfully. Successful organizations achieve their change objectives (human and technical) on time and within budget. Unsuccessful organizations either never accomplish what they plan or do so only after consuming a great deal more time and money than they anticipated. This article introduces an abbreviated review of the ten best practices associated with change management. The reader will recognize the multitude of variables that can be relevant to any change effort and begin to assess the matrix relationship between these interdependent variables. 相似文献
37.
How family spending has changed in the U.S 总被引:1,自引:0,他引:1
Jacobs E Shipp S 《Monthly labor review / U.S. Department of Labor, Bureau of Labor Statistics》1990,113(3):20-27
Since the Monthly Labor Review began, the proportion of family expenditures allocated for food has dropped by half, the incidence of homeownership has doubled, and spending for transportation, medical care, and recreation has increased significantly. 相似文献
38.
In a number of countries where health care is publicly funded, policies to introduce greater patient choice are being implemented. In most cases patient choice is seen as an instrument to reduce waiting times for elective (non-emergency) hospital services. An important issue is whether facilitating greater patient choice will increase the demand for health care and thereby undermine the achievement of reduced waiting times. A large scale pilot of choice in the London metropolitan area permits a test of the hypothesis that choice will affect demand. This paper estimates a model of the demand for elective surgery using a panel of 150 English acute hospitals over the period 1995 to 2004 for three surgical specialties. It examines whether demand shifted following the introduction of the London Patient Choice Project in 2002. The results suggest that the choice project only shifted NHS inpatient demand in orthopaedics and that this shift was inwards. 相似文献
39.
AAhad M. Osman‐Gani Ronald L. Jacobs 《International Journal of Training and Development》2005,9(4):271-280
Technological change is a constant phenomenon in contemporary organizations. How to prepare employees for technological change has increasingly become an issue for human resource development theory and practice. This study investigated the human resource development practices of organizations in Singapore, where companies are continuously responding to rapid technological changes in order to remain competitive. The results show similar patterns of responses across business sectors; however, some differences were found in the transport and communications sectors. On‐the‐job training was reported as the most frequently used training method to address organizational change needs. The discussion and recommendations focus on the need for improved change management approaches. 相似文献
40.
Mark Jacobs Cornelia Droge Shawnee K. Vickery Roger Calantone 《Journal of Product Innovation Management》2011,28(1):123-137
Modularity in product design has been hailed as a way to speed new product development (NPD), to reduce NPD cost, and to enhance customization possibilities for consumers. Modularity in process design may speed new product manufacturing setup times, reduce costs, and enhance the profitability of the lower volumes that customization often entails. However, empirical evidence is scarce that either product or process modularity—individually, jointly, or sequentially—actually produce these or other proposed benefits (e.g., performance growth). This study builds on general modular systems theory (GMST) by examining the theoretical relationship between product and process modularity and the effects of each on firm growth performance. Using structural equation modeling, partial versus complete mediation by manufacturing agility is also scrutinized. In one pair of models, product modularity and process modularity are separate direct antecedents to manufacturing agility, which is modeled to affect firm growth performance; in a second pair of models, product and process modularity are related antecedents to manufacturing agility, with product modularity preceding process modularity. Results from the best‐fitting model show that product modularity directly and positively affects process modularity, manufacturing agility, and firm growth performance. Process modularity was unrelated to manufacturing agility, and neither process modularity nor manufacturing agility predicted growth performance. Consistent with GMST, the study provides empirical evidence of the power of one element of a modular system to orchestrate a fit between a firm's product and manufacturing strategies and to directly drive system performance. Thus, modularity in product design is revealed as the key to understanding GMST effects concerning how changes in one system generate changes in other systems. 相似文献