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91.
In the traditional formulation of rent-seeking games, increasing returns to effort are characterized by an exponent r>1. However, when the value of the rent is normalized to 1, the players’ effort levels A and B will typically be less than 1. Thus, when A<1 and r>1, the value of A r decreases as r increases, contradicting the interpretation of r>1 as representing increasing returns to effort. This apparent defect in the mathematization of the problem seems to suggest that a different interpretation of r is required whenever A<1, upsetting the uniformity and elegance of the model. In this short note, we demonstrate that the perceived problem is illusory, and that the usual interpretation of r is satisfactory for all values of A. 相似文献
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Francesco Giumelli 《Terrorism and Political Violence》2013,25(3):520-522
Of the two major Palestinian factions, Hamas has demonstrated that it is more radical and willing to use acts of terrorism than Fatah. While some arguments have made the case that Hamas has become more moderate in light of efforts to develop stable institutions of government and societal organizations, there has not been conclusive evidence of this ideological shift. In fact, the continued adherence to the Muqawama (resistance) Doctrine represents a decisive facet of the movement's enduring pledge to nullify the state of Israel through a prolonged war of attrition. This article examines the role of political pragmatism in the evolution of Hamas. First, it discusses why the moderation argument alone does not provide an adequate understanding of the movement's evolution, especially since it continues to embrace the use of terrorism and violence as facets of Islamism and as an extension of the Muqawama Doctrine. Second, rather than solely using the moderation argument, this article offers an alternative approach which considers how the combination of strategic policy approaches implemented by Hamas has reflected the role of pragmatism in pursuing its domestic and foreign policy agendas, which are intertwined with the values of the Muqawama Doctrine. 相似文献
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Optimising the development opportunities presented by emerging powers' growing interest in trade, investment and diplomatic engagement in Africa seems a priority for the continent in the context of a changing global system in which power is more diffuse. Taking into account a reconceptualisation of aid effectiveness as development effectiveness, this paper focuses on the manner in which African states understand and approach new opportunities for cooperation with emerging powers, especially China, India and Brazil, including the crucial issue of whether they seek joint development initiatives with both traditional partners and emerging powers. The central argument is that South–South cooperation, which is value-neutral although rhetorically reflecting the principles of solidarity and mutual benefit, must be part of an effective strategy to draw emerging economies into the national or regional development objectives of African states and the continent at large. 相似文献
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Luigi Papi M.D. Silvio Chericoni Ph.D. Francesco Bresci M.D. Mario Giusiani Ph.D. 《Journal of forensic sciences》2013,58(2):552-555
We describe a case of an acute lethal poisoning with hydrocarbons resulting from massive accidental inhalation of gasoline vapors. The victim, a 50‐year‐old man was found unconscious inside a control room for the transport of unleaded fuel. Complete autopsy was performed and showed evidence of congestion and edema of the lungs. Toxicological investigation was therefore fundamental to confirm exposure to fumes of gasoline. Both venous and arterial blood showed high values of volatiles in particular for benzene (39.0 and 30.4 μg/mL, respectively), toluene (23.7 and 20.4 μg/mL), and xylene isomers (29.8 and 19.3 μg/mL). The relatively low values found in the lungs are consistent with the fact that the subject, during the rescue, underwent orotracheal intubation followed by resuscitation techniques, while the low concentrations for all substances found in urine and kidneys could point to a death that occurred in a very short time after first contact with the fumes of gasoline. 相似文献
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This article examines the role of student activism in enhancing or weakening democratization in authoritarian contexts, focusing on the case of the Islamic Republic of Iran. It contends that while numerous studies indicate that student activism has been crucial in processes of regime change, insufficient attention has been paid to the circumstances under which it contributes to strengthening authoritarian rule. The case of Iran demonstrates that there are two different ways in which this occurs. First, much like many other civil society actors, student activism can be co-opted and at times willingly so because of a coincidence of material and/or ideological interests. Second, even when student activism genuinely pushes for democratization and becomes independent and autonomous from political power, the authoritarian constraints in place can contribute to marginalize it and defeat it. The Iranian case highlights the problems student activism faces when it attempts to disengage from the dominant structures of authoritarian politics, and in line with Jamal's findings, demonstrates how authoritarian structural constraints can undermine the democratic aspirations of well-organised groups. 相似文献
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Francesco Campanella Maria Rosaria Della Peruta Stefano Bresciani Luca Dezi 《The Journal of Technology Transfer》2017,42(2):267-284
The emerging relationships connecting organizations are the condition on which innovation is founded nowadays, so it is pivotal to achieve a vaster comprehension of the phenomenon through the exploitation of new dynamics and the exploration of new trajectories. In line with the Quadruple Helix (QE) approach, it seems reasonable to expect that the different environments in which firms operate would highlight the expectations of the various market governance systems, which firms must comply with in order to gain social legitimacy and improve their capacity for survival. To determine whether the Quadruple Helix model has an effect on the firms’ profitability, the authors employed the classification analysis method (Classification And Regression Trees). The sample is composed by 4215 manufacturing firms located in science parks. In our empirical model, the variable “citizen” classifies businesses with high Return On Investment in the best way. This shows that in science parks “the fourth helix” (citizen) has an important role in classifying the firms with the highest performance. Moreover, the majority of firms that attribute high importance to the collaboration with private financial institutions in order to finance innovations have a high ROI. In addition, firms with high economic performance in the model of the quadruple helix generate product innovation. 相似文献