排序方式: 共有25条查询结果,搜索用时 15 毫秒
1.
Michael V. Chiaramonte Laurel M. Chiaramonte 《International Journal of Production Economics》2008,114(2):697-713
Nurse rostering is a complex problem. We propose a new heuristic using a competitive agent-based negotiation that focuses on nurse preferences called competitive nurse rostering (CNR). Unlike the existing literature, CNR models each nurse's preference functions separately and separates the cost minimization and preference maximization problems. CNR produces quality nurse rosters even though it cannot leverage extra staffing. As an agent system, CNR can distribute computational requirements over several computer systems, include other solution methods at various points in of the rostering problem, and act as a real-time scheduling system. These benefits are not naturally inherent in centralized heuristic solutions. 相似文献
2.
Laurel S. Jeris James R. Johnson C. Carol Anthony 《International Journal of Training and Development》2002,6(1):2-12
Although the financial and strategic aspects of mergers and acquisitions are well researched, little work has been done on the human resource development implications of this popular topic. The purpose of this case study research project was to explore the timing and scope of HRD involvement in four organizations recently involved in a merger or acquisition, by using three theoretical models as lenses. The results demonstrated that HRD normally was not involved in the initial decision‐making to merge or acquire, even though post‐deal HRD initiatives, particularly related to change management, were perceived as critical indicators of success. 相似文献
3.
Evaluation of a Truthful Revelation Auction in the Context of Energy Markets with Nonconcave Benefits 总被引:8,自引:0,他引:8
Hobbs Benjamin F. Rothkopf Michael H. Hyde Laurel C. O'Neill Richard P. 《Journal of Regulatory Economics》2000,18(1):5-32
We describe a Vickrey-Clarke-Groves auction for supply and demand bidding in the face of market power and nonconcave benefits in which bidders are motivated to bid truthfully, and evaluate its use for power and gas pipeline capacity auctions. The auction efficiently allocate resources if firms maximize profit. Simulations, including an application to the PJM power market, illustrate the procedure. However, the auction has several undesirable properties. It risks being revenue deficient, can be gamed by cooperating suppliers and consumers, and is subject to the information revelation and bid-taker cheating concerns that make single item Vickrey auctions rare. 相似文献
4.
Investment tasks include forecasting volatilities and correlations of assets and portfolios. One of the tools widely utilized is stochastic factor analysis on a set of correlated time-series (e.g. asset returns). Published time-series factor models require either sufficiently wide time windows of observed data or numeric solutions by simulations. We developed a ‘variational sequential Bayesian factor analysis’ (VSBFA) algorithm to make online learning of time-varying stochastic factor structure. The VSBFA is an analytic filter to estimate unknown factor scores, factor loadings and residual variances. The covariance matrix of the time-series predicted by the VSBFA can be decomposed into loadings-based covariance and specific variances, and the former can be expressed by ‘explanatory factors’ such as systematic components of various financial market indices. We compared the VSBFA with the most practiced factor model relying on wide data windows, the rolling PCA (principal components analysis), by applying them to 9-year daily returns of 200 simulated stocks with the ‘true’ daily data-generating model completely known, and by using them to forecast volatilities of long-only and long/short global stock portfolios with 25-year monthly returns of more than 800 stocks worldwide. Accuracy of the forecast covariance matrices is measured by a (symmetrized) Kullback–Leibler distance, and accuracy of the forecast portfolio volatilities is measured by bias statistic, log-likelihood, Q-statistic, and portfolio volatility minimization. The factor-based covariance and specific variances predicted by the best VSBFA are significantly more accurate than those by the best rolling PCA. 相似文献
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6.
Douglas G. Pearce Laurel Reid Christian Schott 《Journal of Travel & Tourism Marketing》2013,30(1):80-97
This paper contributes to the literature on tourism distribution by examining the distribution behavior of 547 New Zealand outbound travelers segmented by the way in which they have made their travel arrangements: package tourists, independent travelers, and an intermediate group, package plus. The results reveal differences among the three segments in terms of travel characteristics, information search, booking, and purchase, but not profile attributes or the influence of distribution on destination or product choice. Variations are also found in channel behavior across the four different sectors examined: transport to and at the destination, accommodation, and attractions, and activities. 相似文献
7.
James Wakefield Jonathan Tyler Laurel E. Dyson Jessica K. Frawley 《Accounting & Finance》2019,59(2):1415-1446
While educational technologies can play a vital role in students’ active participation in introductory accounting subjects, learning outcome implications are less clear. We believe this is the first accounting education study examining the implications of student‐generated screencast assignments. We find benefits in developing the graduate attributes of communication, creativity and multimedia skills, consistent with calls by the profession. Additionally, we find improvement in final examination performance related to the assignment topic, notably in lower performing students. The screencast assignment was optional, and the findings suggest a tailored approach to assignment design related to students’ developmental needs is appropriate. 相似文献
8.
In choosing where to invest, firms seek out information on a set of possible locations. Information asymmetries may make country visibility particularly important in decisions to locate investment abroad. We develop a country visibility index based on international news stories in The Economist, and show that broad country visibility is at least as important in attracting foreign direct investment (FDI) as other specific investment promotion activities or proxies for information frictions. Controlling for standard gravity model determinants of FDI, we find that greater visibility of developing countries, in particular lower middle- and low-income countries, increases the investment that they receive from US multinational corporations. 相似文献
9.
Laurel Adams 《Business Horizons》2008,51(5):411
Discussions about transfer pricing normally presume the firm's objective is to maximize profit while making the best use of existing capacity. This article differs by exploring the impact of transfer pricing on capital budget decisions. In decentralized firms, decision authority for investment is assigned to division managers whose capital budgets include revenues from internal transfers. When a selling division is under capacity, economic theory recommends a transfer price based on differential cost. Here the seller generates sufficient revenues to recoup operating costs, but not enough to recover capital costs. Consequently, division managers will reject some investments that otherwise would have increased corporate shareholder value. Market-based transfer pricing overcomes this conflict by allocating savings on inter-company transactions to the selling division. However, market transfer pricing may result in shortfalls to corporate profit. Nonetheless, we argue in favor of the use of transfer pricing on the presumption that long-term value creation takes precedence over short-term profit. 相似文献
10.
Laurel A. Steinfield Catherine A. Coleman Linda Tuncay Zayer Nacima Ourahmoune Wendy Hein 《Consumption Markets & Culture》2019,22(4):406-429
ABSTRACTGlobal gender asymmetries in marketing and consumer behavior were recently exemplified by the Transformative Gender Justice Framework (TGJF). The TGJF, however, lacks an explicit reference to power – an aspect that becomes apparent when it is used to assess a consumer phenomenology. In this article we augment the TGJF by building out the power logics and by empirically testing it through an assessment of the reproductive market in Uganda. We capture macro-, meso-, and micro-level power asymmetries, and explore how bio-power and control over resources melds with local gender relations and agentic practices that (i) leave social marketing efforts misaligned with embodied realities, and (ii) result in dichotomies and tensions in the reproductive health market as the North–South strive to define the modern-traditional, medical-pleasurable, and women-men nature of contraceptives. 相似文献