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31.
Kurt Blythe 《Serials Review》2013,39(4):257-262
AbstractReports on four major serials conferences, the 2007 North Carolina Serials Conference, the 2007 meeting of the Ohio Valley Group of Technical Services Librarians, the Canadian Library Association’s 2007 Pre-Conference, and the 2007 North American Serials Interest Group Conference. 相似文献
32.
Elinor Flynn Samuel E. Ehrenreich Kurt J. Beron Marion K. Underwood 《Social Development》2015,24(3):462-482
This study investigated developmental trajectories for prosocial behavior for a sample followed from the age of 10–18 and examined possible adjustment outcomes associated with membership in different trajectory groups. Participants were 136 boys and 148 girls, their teachers, and their parents (19.4 percent African‐American, 2.4 percent Asian, 51.9 percent Caucasian, 19.5 percent Hispanic, and 5.8 percent other). Teachers rated children's prosocial behavior yearly in grades 4–12. At the end of the 12th grade year, teachers, parents, and participants reported externalizing behaviors and participants reported internalizing symptoms, narcissism, and features of borderline personality disorder. Results suggested that prosocial behavior remained stable from middle childhood through late adolescence. Group‐based mixture modeling revealed three prosocial trajectory groups: low (18.7 percent), medium (52.8 percent), and high (29.6 percent). Membership in the high prosocial trajectory group predicted lower levels of externalizing behavior as compared with the low prosocial trajectory group, and for girls, lower levels of internalizing symptoms. Membership in the medium prosocial trajectory group also predicted being lower on externalizing behaviors. Membership in the high prosocial trajectory group predicted lower levels of borderline personality features for girls only. 相似文献
33.
This paper presents new measures of technological and customer‐side relatedness constructed from widely available secondary data. Relatedness is a concept central to predicting the existence and nature of a relationship between corporate diversification and firm performance. Yet, finding appropriate measures has been an ongoing struggle. The widely used SIC‐based entropy measure has low construct validity, and survey‐based measures are hard to replicate across firms and industries and over time. The measures we develop significantly outperform established measures in explaining variation in firm performance across firms and over time, and both sources of relatedness are found to be independent and significant explanations of firm performance. 相似文献
34.
Research and development project selection and resource allocation: a review of quantitative modelling approaches 总被引:2,自引:0,他引:2
This paper reviews the literature on quantitative modelling for research and development (R&;D) project selection and resource allocation. The topic has been a subject of operations research for about four decades. Its importance stems from the fact that R&D projects are a core element of corporate renewal, heavily influence a firm's market success and, if not properly chosen and trimmed, may waste large amounts of resources or even ruin the enterprise. Our survey classifies and characterizes the various modelling approaches. 相似文献
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The use of radio frequency identification (RFID) versus bar coding has been debated with little quantitative research about how to best use RFID's capabilities and when RFID is more advantageous. This article responds to that need by qualitatively and quantitatively analyzing how RFID facilitates increased traceability and control in manufacturing, which in turn enables the use of more lot splitting and smaller lot sizes. We develop insights about operating policies (RFID vs. bar‐code tracking mechanisms, extent of lot splitting, and dispatching rules) and an operating condition (setup to processing time ratio) that affect the mean flow time and proportion of jobs tardy in a job shop. A simulation model is used to control factors in the experimental design and the output is evaluated using analysis of variance. The results show the following: (i) performance worsens when bar coding is used with extensive lot splitting, (ii) process changes such as extensive lot splitting may be required to justify RFID use instead of bar coding, (iii) the earliest operation due date dispatching rule offers an attractive alternative to other rules studied in previous lot splitting research, and (iv) the performance improvements with RFID and increased lot splitting are larger when the setup to processing time ratio is smaller. In a broader context, we fill a research void by quantitatively showing how RFID can be used as an advanced manufacturing technology that enables more factory automation and better performance along several dimensions. The article concludes by summarizing the results and identifying ideas for future research. 相似文献
38.
Michael R. Stevenson Ph.D. Kathryn N. Black Ph.D. Kurt A. DeBord Manuel Fernandez‐Alemany Ph.D. Janet Shibley Hyde Ph.D. 《Journal of sex research》2013,50(2):184-191
New scholarship on rape in American history Sex Without Consent: Rape and Sexual Coercion in America. Edited by Merril D. Smith. New York: New York University Press, 2001, 308 pages. Cloth, $60.00; paper, $19.50. The enigma of sexual desire Sexual Appetite, Desire and Motivation: Energetics of the Sexual System. Edited by Walter Everaerd, Ellen Laan, and Stephanie Both. Amsterdam, Netherlands: Knaw Edita, 2001, 156 pages. Paper, NLG 80.00, Euro 36.30. American sex in the private and public sectors Sex, Love, and Health in America: Private Choices and Public Policies. Edited by Edward O. Laumann and Robert T. Michael. Chicago, IL: The University of Chicago Press, 2000, 535 pages. Hardcover, $48. Enlarging the landscape of sexual pleasure Good Sex: Feminist Perspectives from the World's Religions. Edited by Patricia Beattie Jung, Mary E. Hunt, and Radhika Balakrishnan. New Brunswick, NJ: Rutgers University Press, 2001, 220 pages. Cloth, $50.00; paper, $20.00. Another stab at sexual theory The Role of Theory in Sex Research. Edited by John Bancroft. Bloomington, IN: Indiana University Press, 2000, 366 pages. Cloth, $49.95. 相似文献
39.
In this paper we consider the transfer of risk in a newsvendor model with discrete demand. We view the newsvendor model as a leader/follower problem where the manufacturer (leader) decides the wholesale price and the retailer (follower) decides the quantity ordered. Taking a Pareto-optimal contract as a starting point, the manufacturer wishes to design a real option contract to enhance profits. A new real option contract is said to be feasible if both parties' expected profit is at least as great as in the original contract. When demand is discrete, there are usually infinite feasible contracts that yield maximum expected profits to the manufacturer. In the paper we show that either all, some or none of these real option contracts offer an improved position for the retailer. 相似文献
40.
In this paper we consider the newsvendor model with real options under discrete demand. We consider a mixed contract where the retailer can order a combination of q units subject to the conditions in a classical newsvendor contract and Q real options on the same items. We provide a closed form solution to this mixed contract when the demand is discrete and study some of its properties. In particular we demonstrate that a mixed contract may be superior to a real option contract when a manufacturer has a bound on how much variance she is willing to accept. 相似文献