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71.
72.
Jens K. Roehrich Kostas Selviaridis Jas Kalra Wendy Van der Valk Feng Fang 《生产规划与管理》2020,31(6):453-469
AbstractAlthough the concepts of relational and contractual governance in inter-organizational relationships have attracted academic and practitioner interest over the last decades, to date there have been limited comprehensive and systematic efforts to review, analyse and synthesise extant literature. We review and analyse 1,415 publications identified from a wide range of management disciplines and journals from 1990 to 2018. We deploy bibliographic and content analyses to offer a comprehensive literature analyses and synthesis and subsequently develop and position a multidimensional framework of exchange governance. The proposed framework covers existing conceptualisations of exchange governance and its diverse mechanisms, environmental dimensions influencing the use of exchange governance mechanisms and performance implications. We uncover areas that are currently under-studied and draw out fruitful future research avenues. 相似文献
73.
Andrew C. Herman 《Journal of historical sociology》2020,33(2):198-215
At the 1933–1934 World's Fair in Chicago the local German American population was able to organize some resistance to minimize the Nazi presence on the fairgrounds, while Italian Americans, for their part, were held in check by the close oversight of Fascist Italy's representatives at the Fair. Neither the Fairs organizing committee nor the U.S. State Department offered any objection to either governments presence. The history of the event shows that these differences were fundamentally due to international regulations surrounding international expositions, suggesting that our existing approaches toward meaning‐making and political action at mega‐events need to take better account of larger regulatory structures. 相似文献
74.
Jens Kovsted 《Development policy review : the journal of the Overseas Development Institute》2005,23(4):465-482
Until recently, antiretroviral treatment against AIDS was perceived to be beyond the reach of the majority of patients in developing countries. This situation has changed drastically as international funding for AIDS treatment has swelled to several billion dollars a year. What has brought about this change? Analysis of the merit of six arguments often put forward against scaling up AIDS treatment in developing countries makes it clear that the most significant (and perhaps only) real change has been the large reduction in the price of the drugs. Although affordability is obviously a central issue, it is noticeable that most of the remaining arguments continue to be unresolved. This underlines the dangers of proceeding too fast towards treatment goals. 相似文献
75.
This article presents an estimate of the benefits of reducing crime using the contingent-valuation (CV) method. We focus on gun violence, a crime of growing policy concern in America. Our data come from a national survey in which we ask respondents referendum-type questions that elicit their willingness-to-pay (WTP) to reduce gun violence by 30%. We estimate that the public's WTP to reduce gun assaults by 30% equals $24.5 billion, or around $1.2 million per injury. Our estimate implies a statistical value of life that is quite consistent with those derived from other methods. 相似文献
76.
We revisit the classic problem of estimation of the binomial parameters when both parameters n,p are unknown. We start with a series of results that illustrate the fundamental difficulties in the problem. Specifically, we establish lack of unbiased estimates for essentially any functions of just n or just p. We also quantify just how badly biased the sample maximum is as an estimator of n. Then, we motivate and present two new estimators of n. One is a new moment estimate and the other is a bias correction of the sample maximum. Both are easy to motivate, compute, and jackknife. The second estimate frequently beats most common estimates of n in the simulations, including the Carroll–Lombard estimate. This estimate is very promising. We end with a family of estimates for p; a specific one from the family is compared to the presently common estimate and the improvements in mean-squared error are often very significant. In all cases, the asymptotics are derived in one domain. Some other possible estimates such as a truncated MLE and empirical Bayes methods are briefly discussed. 相似文献
77.
Dipl. Ök. Jens Jacobs Dipl.-Kfm. Andreas Junker Prof. Dr. Peter Letmathe 《Zeitschrift für Betriebswirtschaft》2009,79(11):1259-1282
Previous research focuses on preventive maintenance strategies which minimize the costs of break downs and of maintenance activities. Deteriorating machine conditions with the consequence of rising scrap rates and declining productivity are mostly neglected. This paper investigates simultaneous optimization of production and maintenance planning by applying the condition-based maintenance strategy with parallel machines and overlapping capabilities. The presented model allows exploitation of machine wear considering optimal order assignments to machines which is illustrated by a numerical example. 相似文献
78.
79.
Jens HOEFKENS 《福建农林大学学报(哲学社会科学版)》2011,(6)
过去20年基因组的革命提供给医药公司无以数计的潜在药物靶标。创造强有力的新药来作用这些靶标已经迫在眉睫。然而,大多数低挂水果已经被采摘,药物开发因此变得越来越困难。为了获得美国食品药品管理局(FDA)批准,新药必须证明其安全性和有效性,特别是当新药与现存药物进行比较时。 相似文献
80.
Virtual and Extended enterprises share a large amount of characteristics. Especially when it comes to the process of their foundation either one is well advised to base itself on a strong network of reliable partners. In this network each of the joining companies that form the Virtual enterprise can concentrate on their core competencies, giving the whole enterprise the chance to be extremely efficient. Bringing together the different partners and managing them is seen as being one of the biggest challenges of the Virtual enterprise. Therefore some partners will have to focus on those managing tasks. It might as well be their responsibility to ensure that no legal conflicts in regard to the foundation, dissolving, production and related topics emerge. This being especially difficult because the efficiency of a Virtual enterprise is strongly dependent on the looseness of its structure. What conflicts can appear in the described environment and how they might be solved is the focus of this article. It will be pointed out that the emergence of Virtual and Extended enterprises should be supported by general terms and conditions. This terms and conditions should be adjustable, offer the chance to establish a legal framework fitting just perfectly to the intended purpose to continuously create, adjust or dissolve Virtual enterprise. As a matter of fact a certain degree of commitment can positively expand the co-operation in a Virtual enterprise which is mainly based on trust. 相似文献