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1.
2.
Banks winners in tournaments are difficult to recognize 总被引:1,自引:0,他引:1
Gerhard J. Woeginger 《Social Choice and Welfare》2003,20(3):523-528
Given a tournament T, a Banks winner of T is the top vertex of any maximal (with respect to inclusion) transitive subtournament of T. In this technical note, we show that the problem of deciding whether some fixed vertex v is a Banks winner for T is NP-complete.
Received: 22 February 2002/Accepted: 20 June 2002
Supported by the START program Y43-MAT of the Austrian Ministry of Science.
I would like to thank two thank the referees for a careful reading of the paper, for helpful remarks, and for many suggestions
how to improve the presentation. 相似文献
3.
Gerhard Meyer Ph.D. 《Journal of gambling studies / co-sponsored by the National Council on Problem Gambling and Institute for the Study of Gambling and Commercial Gaming》1992,8(1):11-20
The development of the gambling market in the Federal Republic of Germany since the middle of the seventies and data on pathological gamblers seeking help are described. The continuously increasing supply, together with increases in turnover, was followed-with some temporal delay-by an increase in the number of gamblers who sought advice and treatment. Preliminary measures taken by the health authorities as well as some consequences of pathological gambling are discussed.This article is a translation of a German article published in: Deutsche Hauptstelle gegen die Suchtgefahren (1990): Jahrbuch '91 zur Frage der Suchtgefahren. Hamburg: Neuland-Verlag. 相似文献
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In this paper, Samuelson's simplified version of the Easterlin theory (Samuelson 1976) is extended to a continuous-time model with three age groups. This approach enables one to apply the qualitative theory of non-linear differential equations to show the existence of Easterlin-type cycles. In contrast to the discrete time model we obtain information about the period length of the cycle.This research was supported by the Austrian Science Foundation under grant P6601. 相似文献
6.
Stahl CW 《International migration (Geneva, Switzerland)》1988,26(2):147-170
The Philippines has actively pursued a policy of labor export with the expectation that it would relieve unemployment, augment the supply of skills, and relieve pressure on the balance of payments. It was also anticipated that the inflow of overseas workers' remittances would translate into increased investment, the sine qua non for economic development. However, recent evidence casts some doubt on the extent to which these goals have been achieved. Particularly in the areas of skill formation, there appears to be a significant discrepancy between anticipated and actual outcomes. Indeed, it appears that the labor export may reduce the supply of skills available since 1) many skilled and educated workers are taking jobs requiring skill levels lower than they possess, and 2) a large majority of returning workers do not want to take up employment in those occupations reliant on the skills they used abroad. There is conflicting evidence regarding the impact of labor export on Philippine industries. There is some anecdotal evidence that a few industries have suffered because of a loss of key workers. In general, however, it appears that unemployment is still quite significant in those occupations most heavily represented in labor export. Despite this observation, it may still be true that labor emigration is selective of only the best workers, implying a decline in quality of the work force and possibly productivity in certain industries. The export of professional, technical, and managerial workers is another issue. Unless it can be shown that these workers are in excess supply, it is not advisable to expand the number going abroad. Although their salaries may be higher, and hence their remittances greater, their loss can impose costs on indigenous industries well in excess of a any marginal gains. Remittances from overseas workers do constitute a relatively significant source of foreign exchange. However, the translation of remittances into investment has been restrained by the very low propensity of remittance recipients and returnees to undertake productive investment and by the diversion of remittances from formal banking channels into informal channels. Remittances which are being channeled through the formal banking sector constitute a potentially important source of loan funds, as well as providing a potential stimulus to indigenous industry. 相似文献
7.
This is a report from a conference held in Tokyo, Japan, in 1991 on the economic aspects of labor mobility in Asia. The authors briefly describe selected papers given at the conference and outline conference topics. A list of participants is included. (SUMMARY IN FRE AND SPA) 相似文献
8.
Stahl CW 《The International migration review》1984,18(1):37-49
"This article provides some empirical information pertaining to the benefits and costs of foreign labor to Singapore and subjects to critical analysis some of Pang and Lim's hypotheses concerning the costs of labor importation presented in a previous article.... The article concludes with a discussion of the real cost to Malaysia of Singapore's labor importation policies and its potential for disruption of Malaysia's development plans." 相似文献
9.
Gerhard Liska 《Organisationsberatung, Supervision, Coaching》2006,13(1):56-63
The author discusses the question why the counseling format coaching was able to achieve such a dominant position in the market compared with other formats like supervision or organizational counseling. A point of view specific to power-and gender-related issues and the sociological concept of hegemonial masculinity (Connell) form the starting point to explore this question. Due to its origin from the field of competitive sport and based on its objective target as an instrument for human resources development (Schreyögg) the counseling format coaching serves values and role models typically attributed to men (successful, winner, potent) in an ideal way. Therefore it nourishes established models of hegemonial masculinity in organizations thus contributing to consolidate and safeguard the position of power of men, when it is used in an unreflective modality. With this in mind coaching acts in particular through segregation and as a place to reinsure masculine role models. 相似文献
10.
Chua (2011) argues that in a meritocratic context, institutions restrict the usefulness of social networks in exerting influence on job seekers’ earnings. Regressing job-finding via personal contacts on earnings, he finds negative effects of influence via personal contacts, especially for the well-educated and individuals working in the state sector. In this comment, I argue that these results are ambiguous because (1) the analysis does not sufficiently distinguish between job ‘search’ methods and job ‘finding’ methods, (2) job-finding method indicates information flow rather than a personal contact's influence, and (3) it remains unclear whether Chua's analysis reflects the effect of network usage in job search per se or the effect of self-selection into network usage by individuals with low earning potential. 相似文献