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In this paper we challenge the conventional wisdom that the world’s poorest countries are also the most vulnerable to spikes in international food prices. We derive an inverted U-shaped relationship between food price transmission and the development level of a country from a theoretical model. This prediction is subsequently tested in two sets of regressions where economic development is approximated by per capita income and where we control for a number of other potential determinants of food price transmission. The first set of regressions is based on estimated transmission elasticities and the second on actual domestic food price changes during spikes in international food prices. In both sets of regressions we find strong evidence of the existence of an inverted U-shaped relation between food price transmission and income. Thus, food prices in middle income (rather than in low income) countries respond the strongest to changes in international food prices, implying that the poor in these countries are the most exposed to spikes in food prices. We also show that the factors explaining the variation in the estimated transmission elasticities can explain the variation in domestic food price changes during spikes in international food prices equally well. 相似文献
283.
Poul Aaes Nielsen Stefan Boye Ann‐Louise Holten Christian Btcher Jacobsen Lotte Bgh Andersen 《Public administration》2019,97(2):413-428
Transformational and transactional leadership strategies have become prominent in public administration research, but it is unclear whether they are compatible or whether they could undermine each other. We examine the combined and interactive effects of transformational and three types of transactional leadership (contingent verbal rewards, material rewards, and sanctions) on employee work motivation, conceptualized as work engagement and intrinsic motivation. Panel analyses using repeated measures of 385 leaders and 3,797 employees show that transformational leadership and contingent verbal rewards increased employee motivation. However, simultaneous use of contingent material rewards undermined the benefits of transformational leadership. Thus, the motivational potential of service‐ or community‐oriented visions was undercut when leaders also appealed to extrinsic material motives. This could help explain why financial incentives do not always have the expected benefits in public organizations. We therefore argue that research and practice should pay more attention to how different leadership strategies work in combination. 相似文献
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Friedrich Plank Britta Daum Johannes Muntschick Michèle Knodt Christian Hasse Ingrid Ott Arne Niemann 《中东政策》2023,30(3):37-52
The war in Ukraine and the looming threat of climate change are driving the strategic need to diversify sources of energy, including renewables. Therefore, the European Union aims to develop energy relations with non-EU member states, and Morocco has become a key priority. Both Brussels and Rabat are pursuing ambitious green policies and cooperation initiatives, including on hydrogen. Drawing on theories of international institutions and political economy, this article analyzes hydrogen-related relationship patterns and explains demand and supply factors as drivers of institutionalized energy cooperation. We examine the EU's hydrogen approach and development, its relations with Morocco, and the political interests of both sides. Our analysis shows that the complex interdependencies in the evolving EU-Morocco hydrogen relations indicate that demand can be met by supply. However, challenges remain, including the need to deepen the partnership and prepare the market for commercial hydrogen production. 相似文献
286.
The period from 1966 to 1979 is claimed to have been ‘apartheid’s golden age’ when the anti-apartheid forces were alleged to have largely acquiesced in the well-resourced South African government. However, this paper observes that Botswana, a country of about one million people and almost entirely surrounded by extremely hostile white minority regimes, demonstrated a spirit of defiance to apartheid’s golden age. Botswana defied military intimidation and reprisals from South Africa (an African giant) and its ally Rhodesia by continuing to host large numbers of refugees despite Botswana’s severe budgetary constraints. Botswana did this even though it was landlocked and overwhelmingly dependent on South Africa for economic survival. Botswana felt that it was a moral obligation to make sacrifices for the benefit of the oppressed black people of South Africa. This article attempts to demonstrate that despite being defenceless and dependent on South Africa for economic survival, Botswana did not yield in its principled stand against apartheid, a stand which won international acclaim during the period from 1966 to 1980 – apartheid’s golden age. It concludes that in its own small way Botswana demonstrated that apartheid was not entirely invincible. 相似文献
287.
Stephen R. Sacks Richard C. Larson Christian Schaack 《Journal of Quantitative Criminology》1993,9(2):203-224
At many police departments high-priority callers sometimes incur undue delays that could be avoided by the use of a differential response strategy that takes full account of the different costs of delay for different priority calls. In this article we examine such a strategy, in which lower-priority callers may not be served immediately, even though some response units are available. Arriving priorityi callers are queued whenever the number of busy patrol units equals or exceeds the cutoff number for that priority. Our purpose is (1) to find a practical way of choosing the set of cutoff numbers that will minimize the expected total cost of delays for the entire system and (2) to use that method to investigate how the optimal set of cutoffs changes in response to changes in several important variables, including the relative costs of delay for different priorities, the overall workload, and the relative frequencies of different priority calls. 相似文献
288.
Miriam E. Soto Martinez Ph.D. Jennifer C. Love Ph.D. Deborrah C. Pinto Ph.D. Jason M. Wiersema Ph.D. Sharon M. Derrick Ph.D. Angela Bachim M.D. Christopher Greeley M.D. Marcella Donaruma‐Kwoh M.D. Van Thi Thanh Truong M.S. Si Gao M.S. Christian M. Crowder Ph.D. 《Journal of forensic sciences》2019,64(6):1622-1632
In 2012, the Harris County Institute of Forensic Sciences began prospectively collecting injury data from pediatric autopsies. These data and associated case information from 635 pediatric cases are archived in the Infant Injury Database (IID). This paper introduces the IID to the forensic community and demonstrates its potential utility for child abuse and infant fatality investigations. The database is intended to be a source of evidence‐based research for coroners/medical examiners and clinicians in the recognition and diagnosis of child abuse. RR estimates were employed to quantify the relationship between individual autopsy findings to trauma‐related and nontrauma‐related causes of death. For example, unsurprisingly, the RR of trauma cases with multiple injury types is significantly greater than other causes of death, but the RR results provide a quantitative representation of the relationship. ROC curve modeling of the presence/absence of various injury types performed well at discriminating trauma from other causes of death (AUC = 0.96). 相似文献
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290.