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41.
The transition to agriculture is generally acknowledged to be the economic foundation for population growth over the last
10,000 years and for modern civilization itself. Dates for pristine transitions to agriculture have become a key input into
empirical work on economic growth over the very long run. We propose a model of the transition in which population and technology
respond endogenously to climate. The available data on the southwest Asian case, other cases of pristine transition, and cases
of non-transition are consistent with our model, but often inconsistent with rival explanations. In addition, our theory of
the origins of agriculture has implications for instrumental variable strategies that can be used in empirical research on
long run economic growth and development.
相似文献
42.
Liberalizing Services Trade In APEC: A General Equilibrium Analysis with Imperfect Competition 总被引:1,自引:0,他引:1
The paper studies services-sector trade liberalization in the Asia–Pacific Economic Co-operation (APEC) Forum using a global, multicountry, multisector applied general equilibrium model with an imperfectly competitive service sector. Reducing the service sector's nontariff barriers is modeled by eliminating the possibility for oligopolistic firms to price-discriminate between client countries within APEC and lowering the fixed costs of the firms doing service exporting business. The results suggest that services trade liberalization reinforces existing sectoral trade balances. Increase in demand for intermediate services tends to reinforce rather than counteract the role of primary factors in determining sectoral comparative advantage. The western APEC members received the greatest welfare gains from services trade liberalization, while the developing economies gained more if only tariffs were eliminated. 相似文献
43.
Contingent Valuation: Controversies and Evidence 总被引:47,自引:8,他引:39
Richard T. Carson Nicholas E. Flores Norman F. Meade 《Environmental and Resource Economics》2001,19(2):173-210
Contingent valuation (CV) has become one of the most widely usednon-market valuation techniques. CV's prominence is due to itsflexibility and ability to estimate total value, includingpassive use value. Its use and the inclusion of passive use valuein benefit-cost analyses and environmental litigation are thesubject of a contentious debate. This paper discusses key areasof the debate over CV and the validity of passive use value. Weconclude that many of the alleged problems with CV can beresolved by careful study design and implementation. We furtherconclude that claims that empirical CV findings are theoreticallyinconsistent are not generally supported by the literature. Thedebate over CV, however, has clarified several key issues relatedto nonmarket valuation and can provide useful guidance both to CVpractitioners and the users of CV results. 相似文献
44.
We use a simple model of international lending to show that an emerging market borrower who might default can be shut out of international capital markets without warning. A modest haircut on obligations, for example, can shut down lending. 相似文献
45.
46.
47.
This research explores tourism policy making, from the perspectives of policy makers using grounded theory. It focuses on Leeds, a city in the North of England, which is characterized by its turbulent environment. The paper identifies themes around policy making, including low status, lack of clarity, uncertainty, lack of consensus and congruence and complexity. Its findings indicate policy making is essentially a social process, involving communication and negotiation between people in the context of wider change. It suggests a social conceptualization, and further research to investigate the communications involved in producing policy rather than the focus on the tangible outputs of the process such as a plan or a physical development. 相似文献
48.
Transatlantic Similarities and Contrasts in Rural Development Policies
The United States (US) and European Union (EU) share many general policy aims for rural areas, but they differ in the ways in which they try to achieve these aims. The principal difference lies in the role envisioned by agriculture in overall rural development. EU policies treat agriculture as a provider of public goods, and many of its 'rural' programmes target agriculture. In the US, very few Federal rural development programs are focused solely on agriculture. Differences of approach may be linked to different farm distributions, population densities, historical settlement patterns, and the historical policy process per se . In particular, in the US rural development policy does not cover the environment or income support to farmers; these are addressed through other programmes. In contrast, the EU classifies its agri-environmental programmes as rural development, claiming that more environmentally-friendly farm practices bring benefits to the broader rural economy. US State and local initiatives emphasize many themes found in the EU's Pillar II programmes, such as value-added or sustainable agriculture. Overall, although there are marked differences in the ways in which policies are implemented, the coverage of these policies in the EU and US is rather similar. 相似文献
The United States (US) and European Union (EU) share many general policy aims for rural areas, but they differ in the ways in which they try to achieve these aims. The principal difference lies in the role envisioned by agriculture in overall rural development. EU policies treat agriculture as a provider of public goods, and many of its 'rural' programmes target agriculture. In the US, very few Federal rural development programs are focused solely on agriculture. Differences of approach may be linked to different farm distributions, population densities, historical settlement patterns, and the historical policy process per se . In particular, in the US rural development policy does not cover the environment or income support to farmers; these are addressed through other programmes. In contrast, the EU classifies its agri-environmental programmes as rural development, claiming that more environmentally-friendly farm practices bring benefits to the broader rural economy. US State and local initiatives emphasize many themes found in the EU's Pillar II programmes, such as value-added or sustainable agriculture. Overall, although there are marked differences in the ways in which policies are implemented, the coverage of these policies in the EU and US is rather similar. 相似文献
49.
This brief note describes two of the forecasting methods used in the M3 Competition, Robust Trend and ARARMA. The origins of these methods are very different. Robust Trend was introduced to model the special features of some telecommunications time series. It was subsequently found to be competitive with Holt’s linear model for the more varied set of time series used in the M1 Competition. The ARARMA methodology was proposed by Parzen as a general time series modelling procedure, and can be thought of as an alternative to the ARIMA methodology of Box and Jenkins. This method was used in the M1 Competition and achieved the lowest mean absolute percentage error for longer forecasting horizons. These methods will be described in more detail and some comments on their use in the M3 Competition conclude this note. 相似文献
50.
Nancy H. Evans 《Annals of Tourism Research》1976,3(4):189-198
Adaptive strategies that facilitate economic and socio-cultural interaction in a West Mexican resort community, Puerto Vallarta, are examined over time. The special role played by bilingual culture brokers and the presence of both seasonal and resident foreigners contribute to rapid culture change, the expansion of tourism, and strenghening ethnic identity. This paper focuses on the spatial, temporal, linguistic, and cultural factors that mediate between the various types of guests and the host country. 相似文献