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排序方式: 共有75条查询结果,搜索用时 31 毫秒
31.
We consider the choice of farm animal breeds for conservationprogrammes. An expert survey among breed societies and scientistsand the analysis of past decisions in EU member countries toenter breeds into conservation programmes show differences inthe valuation of breed characteristics. Whereas both sets ofactors value diversity aspects as well as cultural and economicaspects of breed conservation, policy makers, in comparisonwith experts, seem to be less concerned about true extinctionrisk. The results suggest broadening the discussion about theconservation of animal genetic resources to aspects preservingsocietal and cultural resources.  相似文献   
32.
Using novel cross-country data, we examine whether and to what extent tax morale impacts informal entrepreneurship. Employing instrumental variables strategy, we find that countries with higher tax morale enjoy lower informal entrepreneurship.  相似文献   
33.
Aslı Bâli  Aziz Rana 《Geopolitics》2013,18(2):210-238
This article argues that American actions in the Middle East designed to advance democracy and/or ‘moderation’ tend to yield perverse outcomes that frustrate the aspirations of local actors while undermining the values purportedly being promoted by the US. In order to explain these contradictions, we emphasise the linkage between policies of democracy promotion and long-standing American commitments both to millennialism and geographical omnipresence. As a result of these policies and geopolitical vision, we argue that ‘democracy promotion’ often devolves into a simple defence of American interest – by producing electoral outcomes intended to strengthen local agents seen as compliant with US regional priorities. In this context, the shift from democracy promotion to a policy of pursuing ‘moderation’ in the region, understood as support for American policies, is entirely coherent. Commentators tend to present this shift (particularly in the wake of the Iraq War) as recognition by US political actors of the imperial overtones embedded in more heavy-handed approaches to regime change. Yet, the call for moderation is itself profoundly intertwined with American millennial aspirations, while remaining remarkably devoid of clear content and thus equally amenable to manipulation for strategic ends. By way of conclusion, we suggest an alternative basis for a less intrusive American position in the region, one that rejects the need for an overstretched territorial presence and that is grounded in a substantive respect for local self-determination.  相似文献   
34.
To better characterize the dependence structure of the joint returns distribution, we propose to blend copula functions with Asymmetric GARCH (AGARCH) models, which are allowed for generalized error distribution. We model the copula’s marginals by the AGARCH processes that can differentiate between the impacts of positive and negative shocks on the returns volatility while taking the large kurtosis of the returns into account. An application of the procedure is elaborated on the All Ordinaries Index and its corresponding Share Price Index on future contracts in Australia. The findings reveal that the two spot and future markets show a strong right tail dependence but no left tail dependence. This provides a very useful knowledge for the risk management and hedging in futures markets.  相似文献   
35.
With many fiscal policies likely to have quite different age/gender incidences, this paper examines age and gender dimensions of income distribution and fiscal incidence in New Zealand using Household Economic Survey data for 2010. Applying, and testing, an intra‐household income sharing rule, our evidence suggests strong life‐cycle and gender aspects to fiscal incidence. Net tax liabilities are found to be low and negative, at younger and older ages but positive during much of the “working age.” Notwithstanding considerable within‐gender heterogeneity, women are found on average to have systematically and persistently lower net fiscal liabilities than men, especially at older ages.  相似文献   
36.
This article uses two representative household budget surveys from the Kyrgyz Republic to analyze factors influencing participation and returns from different types of nonfarm activities in 2005 and 2006. We use the double hurdle and Heckman models, which allow us to demonstrate that a number of variables has different effects on participation and income from nonfarm activities. For example, residing in remote areas and lack of capital are found to stimulate participation in nonfarm activities, but decrease nonfarm income. Results are robust, but using the Heckman model seems to produce more accurate results for returns to education and gender under the presence of selection bias. Overall, nonfarm activities are found to be most important for the poor, who are pushed out of agriculture due to limited and poor land resources. This indicates that equipping poor households to enable them to move towards better remunerative nonfarm activities should be a priority for Kyrgyz rural policy makers.  相似文献   
37.
Background: Sacubitril/valsartan reduces cardiovascular death and hospitalizations for heart failure (HF). However, decision-makers need to determine whether its benefits are worth the additional costs, given the low-cost generic status of traditional standard of care.

Aims: To evaluate the cost-effectiveness of sacubitril/valsartan compared to enalapril in patients with HF and reduced ejection fraction, from the Singapore healthcare payer perspective.

Methods: A Markov model was developed to project clinical and economic outcomes of sacubitril/valsartan vs enalapril for 66-year-old patients with HF over 10 years. Key health states included New York Heart Association classes I–IV and deaths; patients in each state incurred a monthly risk of hospitalization for HF and cardiovascular death. Sacubitril/valsartan benefits were modeled by applying the hazard ratios (HRs) in PARADIGM-HF trial to baseline probabilities. Primary model outcomes were total and incremental costs and quality-adjusted life years (QALYs) and the incremental cost-effectiveness ratio (ICER) for sacubitril/valsartan relative to enalapril

Results: Compared to enalapril, sacubitril/valsartan was associated with an ICER of SGD 74,592 (USD 55,198) per QALY gained. A major driver of cost-effectiveness was the cardiovascular mortality benefit of sacubitril/valsartan. The uncertainty of this treatment benefit in the Asian sub-group was tested in sensitivity analyses using a HR of 1 as an upper limit, where the ICERs ranged from SGD 41,019 (USD 30,354) to SGD 1,447,103 (USD 1,070,856) per QALY gained. Probabilistic sensitivity analyses showed the probability of sacubitril/valsartan being cost-effective was below 1%, 12%, and 71% at SGD 20,000, SGD 50,000, and SGD 100,000 per QALY gained, respectively.

Conclusions: At the current daily price sacubitril/valsartan may not represent good value for limited healthcare dollars compared to enalapril in reducing cardiovascular morbidity and mortality in HF in the Singapore healthcare setting. This study highlights the cost-benefit trade-off that healthcare professionals and patients face when considering therapy.  相似文献   
38.
This study is an initial attempt at investigating the extent to which portfolio diversification benefits at different investment horizons are available to a Turkish investor from investment in MENA countries exposed to the Arab spring based on MGARCH-DCC and Wavelet techniques on daily data spanning from 2005 to 2015. The findings tend to suggest that the Turkish investors may not benefit from investment in Egypt for almost all investment horizons but may have moderate benefits from Lebanon up to the investment horizons of 32–64 days and longer. However, Turkish investors may benefit from Oman excepting the longer investment horizons. In the long run, all stock holding periods exceeding 32 days have minimal benefits for portfolio diversification.  相似文献   
39.
Enclosed residential areas are proliferating in Malaysian cities, in common with many other parts of the world. The production of gated communities and guarded neighborhoods in Malaysia reveals the active role of the state in creating conditions that support enclosure and securitization of space. This article examines the role of governance in producing residential enclaves that reinforce segregation and fragment urban landscapes. Based on a study of gated communities in Malaysia, we argue that governments, corporations and citizen groups collaborate within a complex governance system that (re)produces enclosure. Neoliberal market principles fuse with ethnic politics, cultural predilections and economic imperatives to generate a socially and spatially fragmented urban landscape where security concerns dominate and where citizens culturally, physically and symbolically segregate themselves from others.  相似文献   
40.
Employee satisfaction continues to be a key to an understanding of relatively high turnover rates within the hospitality industry. The present study explores the personality characteristics of employees who receive pay increases in the restaurant industry. One of the two facets of Type A personality ‘achievement striving’ was found to be positively related to all three measures of pay increases but the other facet ‘impatience and irritability’ was not related. The implications of the findings for selection, retention and motivation of restaurant employees are discussed.  相似文献   
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