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131.
132.
矿井水害的预防预报是指查清矿井水文地质条件,对水害做出分析判断。本文以山西成家庄煤矿防治水为例,分析了矿井充水因素,以理论结合实际,为预防矿井水害提供依据。 相似文献
133.
The purpose of the paper is to analyse the influencing factors on farmers’ willingness of withdrawal from rural homesteads (WRH). Methods that included field surveys, factor analyses and case studies were used for this paper. The results show that farmers have a strong willingness to own the property on which their homesteads sit. There are deviations between homestead systems and execution. It is common that the area of a homestead exceeds the lawful standard, and one peasant family owns two or more homesteads. Peasant families have many concerns about WRH, which include: reduction of employment, lack of supporting social security, high expenditure of new houses, low compensation criteria for homesteads, decline in standard of living and inconvenience in agricultural production. Among all means of compensation, peasants prefer allocated residences, and they pay more attention to public service facilities and fundamental facilities. The authors argue that implementing employment and social security policies and setting up linkage mechanisms of WRH could help to smoothly push forward WRH. 相似文献
134.
Paloma Miravitlles Ana Núñez-Carballosa Laura Guitart-Tarrés Claudio Cruz-Cazares 《Technology Analysis & Strategic Management》2017,29(6):672-686
The emergence of Brazil, Russia, India and China (BRIC) as international locations for foreign direct investment in R&D is a sign that multinationals are relocating their technological activities to new territories. This trend may weaken the supremacy of the developed countries until now considered leaders in innovation, and may mean the loss of the competitive advantages enjoyed by the countries considered intermediate innovators. This paper examines the situation of Spain as a typical intermediate economy and compares it to its main competitors among the BRICs. Based on eight case studies of subsidiaries with R&D centres in Spain, we conclude that the policies adopted by certain emerging economies to develop their national innovation systems are proving effective and that these countries now pose a threat to intermediate economies. However, the BRICs still lag behind in terms of the security of their institutional framework; this situation leaves intermediate countries in an advantageous position. 相似文献
135.
This paper provides clear-cut evidence that the slope and curvature factors of the term structure of interest rates (yield curve) contain more information about future changes in economic activity than the term spread itself, often used in the literature as a predictive regressor of economic activity. These two factors reflect different information about future economic activity, which is smoothed out by the term spread. The paper shows that the slope factor has predictive power on future economic activity over longer horizons ahead, and thus may be interpreted as reflecting future business cycle conditions. On the other hand, the curvature factor, which enters the term spread with opposite sign than the slope factor, has predictive power on shorter movements of future economic activity which may be associated with changes in the current stance of monetary policy. These results hold for a number of world developed economies. 相似文献
136.
The aims of this research are to clarify the motivations of rock climbing tourists by using a push and pull framework and to investigate the relationship between tourist motivation and overall satisfaction. In a survey of 473 rock climbing tourists in the Geyikbayırı region in Antalya, Turkey, the most important push motivations were identified as ‘physical setting’ and ‘challenge’, while ‘climbing novelty seeking’ and ‘climbing tourism infrastructure’ were the most important pull motivations. Furthermore, the findings of this study indicated that overall satisfaction of rock climbers can be determined by their push and pull motivations. The results also showed that motivations of rock climbers differ according to their experience levels. The paper ends with theoretical contributions of the study and its managerial implications. 相似文献
137.
Existing research shows that bidder default risk increases following acquisitions due to a rise in post‐acquisition leverage and managerial risk‐taking actions offsetting the potential for asset diversification. This study examines whether the risk effects of acquiring distressed targets are fundamentally different and investigates possible explanations for any dissimilarities. Bidders often acquire relatively smaller distressed targets in domestic and related industries and have a higher initial target stake and more financial flexibility, thereby minimizing risk exposure. Controlling for several characteristics of bidder investment behaviour in both types of deals, however, we find that the increase in bidder default risk is substantially larger when acquiring distressed firms. 相似文献
138.
P. Elhorst M. Abreu P. Amaral A. Bhattacharjee L. Corrado B. Fingleton 《Spatial Economic Analysis》2016,11(4):355-360
This editorial summarizes and comments on the papers published in issue 11(4) so as to raise the bar in applied spatial economic research and highlight new trends. The first paper deals with common factors and spatial dependence in the error term specification of a production function model. The second paper sets forth a New Economic Geography (NEG) model with production activities that vary in their complexity, so as to analyse the impact on specialization patterns across different regions. The third paper measures the efficiency of local public investments using a relatively unknown econometric technique in which the time span over which the variables in the regression equation are measured is increased by one time period every run. The fourth paper adopts a conditional quantile regression approach to determine the impact of people employed in informal jobs on the wage distribution in Colombia and five of its regions. Finally, the last paper proposes and tests two new Bayesian variable selection approaches for spatial econometric models. 相似文献
139.
美育是素质教育的重要组成部分。本文就作者几年来在文学作品教学中的一点作法来谈一谈语文教学中美育的实施,即文学作品的美育因素,可以从意境美、语言美、人物形象美、结构美、环境美等五个方面来进行充分挖掘。 相似文献
140.