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91.
Ignacio Cazcarro Julio Sánchez Chóliz Cristina Sarasa Ana Serrano 《Applied economics》2016,48(16):1463-1480
The agri-food industry has several features of great importance for sustainable economic growth in rural areas. The objective of this work is to evaluate the effects associated with different scenarios of growth, and changes in the regional agri-food industry. These scenarios simulate changes in exports and imports, changes in technology and changes in the level of industrial integration. We develop a computable general equilibrium model calibrated for the region. Our results indicate that policies trying to improve the competitiveness and dynamism of strategic sectors as the agro-industrial complex in this regional economy exert positive effects on its growth and income, having notable impacts on local job markets but also in other sectors and activities linked through the whole production chain. 相似文献
92.
António Câmara 《Quantitative Finance》2013,13(8):1241-1252
This paper extends the literature on Risk-Neutral Valuation Relationships (RNVRs) to derive valuation formulae for options on zero coupon bonds when interest rates are stochastic. We develop Forward-Neutral Valuation Relationships (FNVRs) for the transformed-bounded random walk class. Our transformed-bounded random walk family of forward bond price processes implies that (i) the prices of the zero coupon bonds are bounded below at zero and above at one, and (ii) negative continuously compounded interest rates are ruled out. FNVRs are frameworks for option pricing, where the forward prices of the options are martingales independent of the market prices of risk. We illustrate the generality and flexibility of our approach with models that yield several new closed-form solutions for call and put options on discount bonds. 相似文献
93.
Estrella Gómez-Herrera 《Empirical Economics》2013,44(3):1087-1111
The gravity equation has been traditionally used to predict trade flows across countries. However, several problems related with its empirical application still remain unsolved. The unobserved heterogeneity, the presence of heteroskedasticity in trade data or the existence of zero flows, which make the estimation of the logarithm unfeasible, are some of them. This paper provides a survey of the most recent literature concerning the specification and estimation methods of this equation. For a dataset covering 80% of world trade, the most widely extended estimators are compared, showing that the Heckman sample selection model performs better overall for the specification of gravity equation selected. 相似文献
94.
Francisco Muñoz-Leiva María Isabel Viedma-del-Jesús Juan Sánchez-Fernández Antonio Gabriel López-Herrera 《Quality and Quantity》2012,46(4):1077-1095
This article presents an application of a bibliometric and visual study of the research carried out on a social science subfield,
concretely the consumer behaviour research (CBR), from a longitudinal perspective (period 1966–2008). The study combines performance
analysis and science mapping for detecting and visualizing conceptual subdomains. Quantitative and qualitative measures are
used in order to identify the most prominent themes. Quantitative data are used to put together very related concepts (themes
or clusters of topics), while qualitative indicators (as those based on citations) are used to measure the quality and/or
impact of the detected themes. The study also uses bibliometric maps to show in a visual way the associations between the
main concepts treated by the CBR community. The maps provide insight into the structure of the CBR, visualize the division
of the field into several subfields, and indicate the relationships between these subfields. Co-word analysis is the bibliometric
technique used to identify the main themes. All this allows us to quantify and visualize the thematic evolution of the CBR.
It also helps to both experts and novices to understand the current state of the art of the CBR and to predict where future
research could lead. 相似文献
95.
Anabela Ribeiro António Pais Antunes Antonio Páez 《Journal of Transport Geography》2010,18(1):125-132
A number of transportation infrastructure projects were conducted in Europe during the 1990s with the explicit objective of promoting regional cohesion goals through the improvement of the accessibility of peripheral regions. Given its peripheral situation in the Union, Portugal was a key target for some of these projects. A decade later, it is pertinent to ask whether the new infrastructure achieved its objective of promoting lagging regions. The objective of this paper is to analyze one of the lagging regions in Portugal, to try to establish the link between changes in accessibility levels brought by improvements in the transportation network, and two indicators commonly used in accessibility research (population and purchasing power), while controlling other variables of possible relevance, such as the levels of educational achievement of the population in the region. The analysis is based on the use of spatially autoregressive models which allow the representation of accessibility as spatially lagged variables of first and second order. The results place the contribution of accessibility changes in context, and point at the relevance of education as an alternative policy. 相似文献
96.
Mónica Ordiz Esteban Fernández 《International Journal of Human Resource Management》2013,24(8):1349-1373
The aim of this work is to examine the effect that human resource practice has on performance. From a database made up of 250 companies in Spain and by means of a regression analysis, we test empirically whether human resource practices generate positive results under any circumstance or if their effectiveness depends on certain contexts. In this respect, focusing the study on the activity sector and the environment, we analyse whether high levels of competition in the environment and service companies constitute more attractive contexts for the adoption of high involvement practices. 相似文献
97.
António Aguiar Costa Amílcar Arantes Luís Valadares Tavares 《Journal of Purchasing & Supply Management》2013,19(4):238-246
This paper analyses public e-procurement implementation and emphasizes its main difficulties and impacts in relation to the type of public organizations. The primary impacts and changes in the Portuguese public sector are analyzed within the new legal framework, which adopts mandatory e-procurement for any open, restricted or negotiated procedure. In this sense, two surveys carried out in consecutive years were conducted to assess the implementation difficulties and impact of e-procurement in the Portuguese public sector.The major value of this research is that it presents and discusses, for the first time, evidences about difficulties and impacts on the mandatory adoption of public e-procurement, based on the case of Portugal. The results show that the entities’ administrative level influences the e-procurement implementation, which is influenced by the innovation adoption process. 相似文献
98.
Recent literature has emphasized the emerging role of social media in generating a destination image. Even so, there is still no clear definition of the main actors, typologies and components prevailing in these environments or the possible differences between diverse social platforms. Specific analysis and comparison of the Barcelona TripAdvisor Forum and a traditional Destination Management Organization (DMO) website showed that actors, typologies and components are platform specific and have both similarities and differences with other sources, including DMO websites and other social media platforms. 相似文献
99.
In this elaboration we focus on the role of multi-agent systems as a tool for modeling economic dynamics. Hence, at the beginning the specific features of this tool are considered. Taking the example of explaining the relationship between innovations and economic growth it will be shown after that how the tool of multi-agent modeling can be used for the following purposes: (1) for explaining the occurrence of innovations, (2) for specifying the effects these innovations have on economic growth, (3) for linking emission impacts to this growth and finally (4) for exemplarily assessing political options to reduce these impacts. 相似文献
100.
Andrés Navarro-Galera Salvador Rayo-Cantón Dionisio Buendía-Carrillo 《Applied economics》2013,45(58):6257-6276
Previous studies have highlighted the question of government loan interest as one of great current importance. Government borrowing levels are high, and reducing interest payments would generate savings to meet other spending needs and/or to lower taxation, thus supporting the sustainability of public finances. However, no previous study has presented a method for a local government to calculate its own credit risk and thus be in a position to negotiate lower interest rates on its borrowing. This article defines a financial model that enables local governments to estimate the interest rate payable on a bank loan, based on their credit risk premium, in accordance with the Basel II rules and the findings of our empirical study of large local governments. 相似文献