Port facilities,regional spillovers and exports: Empirical evidence from Spain

This paper analyses whether regions benefit from their neighbours' transport facilities. We focus on ports and estimate a gravity model of trade that includes port facilities indicators as explanatory variables. The model is estimated by using exports from 19 Spanish regions to 45 countries from 2000 onwards. To test for the existence of regional spillovers, we construct a weight matrix that takes into account the relative importance of the neighbouring ports, as well as the quality of port infrastructure in destination countries. The findings suggest that regional spillovers play a larger role than port facilities themselves in the growth of Spanish exports.     

Small-scale households renewable energy usage intention: Theoretical development and empirical settings

The slow growth of acceptance is a major barrier to small-scale renewable energy development. This study examines the determinants of acceptance of small-scale renewable energy in Malaysia. The research model for this study was developed based on the theory of planned behaviour, the technology acceptance model, the diffusion of innovation theory and the existing literature on technology adoption. This study tested five hypotheses based on a survey, of 200 Malaysian urban residents and which used structured questionnaires. Multiple regression analysis results reveal that perceived ease of use, perceived behavioural control, awareness, relative advantage and cost reduction have significant impact on small-scale renewable energy usage intention. This study not only contributes to and extends our understanding of small-scale renewable energy purchasing behaviour, it also identifies the rationales for purchasing small-scale renewable energy. From a managerial viewpoint, the findings not only provide support for investment decisions but also take into consideration the concerns and needs of businesses and Malaysian government agencies.     

Liquid-Liquid Extraction of Copper from Ammoniacal Solution with Cyclohexyl-Substituted β-Diketones

Abstract

The extraction of copper from ammoniacal solution was studied with different cyclohexyl-substituted β-diketones. For comparison with LIX 54, the extraction parameters were determined for their dependence on the chain length of the substituent as well as on the influence of pH and the concentrations of copper and ammonia.     

An hour-ahead prediction model for heavy-tailed spot prices

We propose an hour-ahead prediction model for electricity prices that capture the heavy tailed behavior that we observe in the hourly spot market in the Ercot (Texas) and the PJM West hub grids. We present a model according to which we separate the price process into a thin-tailed trailing median process and a heavy-tailed residual process whose probability distribution can be approximated by a Cauchy distribution. We show empirical evidence that supports our model.     

23MnNiMoCr54钢低温回火组织电子结构参数及强度计算

利用固体与分子经验电子理论(EET),分析了矿用圆环链23MnNiMoCr54钢低温回火组织特征相,并计算了特征相及相面电子结构参数n′A、Δρ′,最后利用电子结构参数计算了23MnNiMoCr54钢低温回火后的抗拉强度。     

Elimination of Manganese-54 in Waste Water by Oxine-Impregnated Activated Charcoal

Manganese ion in solution has been adsorbed in a column packed with oxine-impregnated activated charcoal. In an initial stage, the distribution of Mn ion along the column follows a first order kinetic equation, and the apparent rate constant was determined. With an additional supply of the solution, however, the distribution tends to deviate from the first order kinetic plots. A bed depth/service time relation has been determined experimentally. By introducing a concept of the effective “adsorption capacity” and “adsorption rate constant of the adsorbent, an equation has been presented for estimating the feed application time for breakthrough at any given experimental conditions. With the assumption of a simple first order kinetic adsorption, a bed depth/service time relation was also determined by a numerical calculation, for further examining the characteristics of the relation.     

Simultaneous Territories: Unveiling the Geographies of Latin American Cities

The harmonious, utopian image that housing in Latin America exuded across the world in the postwar years is very much at odds with the current view of the region, in which unbridled shantytowns dominate. Patricio del Real sets out to understand how such a rupture might have been possible: What was the process of exclusion at play in these Modernist projects? How does Modernism represent simultaneous territories in which emerging challenges to the social and political status quo were merely muffled by the architectural seduction of the 1950s?. Copyright © 2011 John Wiley & Sons, Ltd.     

Ba_4Nd_(9.33)Ti_(18)O_(54)微波介质陶瓷的微波合成及其低温烧结

采用微波加热合成了Ba4Nd9.33Ti18O54(BNT)微波介质固溶体陶瓷粉末,研究了微波加热工艺对BNT陶瓷相组成与微观形貌的影响。结果表明:微波加热相比于常规加热可以实现BNT陶瓷的低温快速合成;通过添加质量分数45%的B2O3-SiO2-CaO-MgO(BS)玻璃实现了BNT陶瓷于875℃烧结致密化。1 100℃微波合成的BNT陶瓷加BS玻璃烧结后具有最佳性能:εr=35.8,tanδ=12×10–4,σf=103.7 MPa,λ=2.576 W/(m.K)。     

Adaptation behaviours across ecosystems under global warming: A spatial micro‐econometric model of the rural economy in South America*

This paper develops a spatial rural economy model of adaptation to climate change that accounts for a multitude of rural enterprises across a diversity of ecosystems in South America using household surveys. We model adoptions of crops, livestock, and forests. Both specialized and diversified enterprises are modelled. This paper finds that livestock, forests, and a diversification into crops, livestock, and forests are key adaptation strategies. Under the UKMO (United Kingdom Meteorological Office) scenario, a livestock‐only enterprise would expand by 4 per cent, a crops‐livestock‐forests by 3 per cent, and a forests‐only by 3 per cent. Adaptation behaviours are closely tied with ecosystem changes under global warming. A livestock‐only would increase especially in the grasslands. A crops‐livestock‐forests enterprise expands into xeromorphic forests. A crops‐livestock expands in Andean grasslands and tall grasslands. A forests‐only expands in the coasts and woody zones. A crops‐only enterprise decreases across South America. Resumen Utilizando encuestas a hogares, en este artículo se desarrolla un modelo espacial de economía rural para la adaptación al cambio climático, con la capacidad de representar una gran cantidad de empresas rurales dentro de una diversidad de ecosistemas en América del Sur. Se modeliza la adopción de cultivos, ganado y bosques. Se modelizan tanto empresas especializadas como diversificadas. El artículo encontró que el ganado, los bosques, y una diversificación en cuanto a cultivos, ganado y bosques son estrategias claves de adaptación. Bajo un escenario propuesto por la Oficina Meteorológica del Reino Unido (UKMO, siglas en inglés), una explotación dedicada solamente a la ganadería aumentaría en un 4 por ciento, una dedicada a cultivos‐ganadería‐bosques un 3 por ciento, y una dedicada exclusivamente a bosques un 3 por ciento. Los comportamientos para la adaptación están estrechamente ligados a cambios en los ecosistemas debidos al calentamiento global. Una explotación exclusivamente ganadera aumentaría especialmente en el ecosistema de pastizal. Una explotación de cultivos‐ganadería‐bosques podría expandir en bosques xeromórficos. Una explotación basada en cultivos‐ganado expandiría en áreas de pastizales Andinos y pastizal alto. Las explotaciones basadas solamente en bosque expandirían en las costas y zonas boscosas. Una explotación exclusivamente de cultivos disminuiría en América del Sur.