Impacts of internal R&D on firms’ performance and energy consumption: Evidence from Ethiopian firms     

《国际创新研究学报(英文)》2023,7(1):47-67

In recent decades, with the rapid development of the knowledge economy and science, countries have embraced technical innovation and have gradually increased investment in research and development (R&D). A vast literature indicates that the relationship between R&D and firm performance is highly complex. The evidence suggests that R&D positively influences firm performance, yet findings on the process by which this happens are mixed. Rigorous analyses are required on how R&D investments affect energy consumption. This study explores the impact of R&D investment on the performance and energy consumption of 476 firms in Ethiopia by employing a combination of fixed-effect, propensity score matching, and endogenous treatment effect estimation methods. The empirical results reveal that investment in R&D positively influences both innovation and long-term financial performance but negatively impacts short-term financial performance and energy consumption. The results also show that the impacts of R&D activities vary significantly across different categories of firms, confirming that heterogeneity may be an issue among the firms considered. The results also indicate that the availability of credit is a more important moderating factor in the relationship between R&D investment and firm performance than the legal system is. These results have important implications for firms with growing R&D operations, especially those in developing countries such as Ethiopia. Ethiopian firms should invest more in R&D activities, such as in fundamental and applied research, to improve performance and enhance competitiveness.  相似文献   

公路建设对区域水资源影响程度评价方法研究     

曹龙熹  张科利  孔亚平  张卓栋  张卫香 《资源科学》2010,32(2):290-295

本研究结合公路建设对流域水文过程的作用机制,从公路建设、环境背景以及路河作用三方面选取12个基本指标构建指标体系,提出了进行公路对区域水资源潜在影响以及现状路网影响程度的评价方法,并在层次分析法的支持下以綦江流域为例进行了评价应用.结果表明该评价方法具有较高的可靠性,公路对区域水资源的影响程度受地形条件和路河位置关系影响显著,单位长度路段的影响强度取决于公路施工强度和影响范围,但不同等级的公路对流域尺度的影响强度则由公路长度和单位长度路段特征共同决定.研究结果可以用于指导区域水资源评价和交通建设规划.  相似文献   

鄱阳湖区农户生态补偿意愿影响因素实证研究   总被引：13，自引：5，他引：8  

李芬  甄霖  黄河清  魏云洁  杨莉  曹晓昌  龙鑫 《资源科学》2010,32(5):824-830

本文运用问卷调查方法和统计学的Multinomial Logistic方法,研究生态补偿机制中微观经济主体-农户的行为与选择的问题,确定农户是否具有生态补偿意愿,及影响农户生态补偿意愿的主要因素。结果表明:有近51.5%的受访农户接受生态补偿政策,23.7%的农户不愿意实施生态补偿政策,还有16.3%的农户不知道该如何选择。选择维持原样的农户占8.51%。根据分析结果,进一步揭示出收入水平的差异在很大程度上影响着当地农户的生态补偿意愿;就业和收入来源的多元化在一定程度上成为激励农户的生态补偿意愿的重要因素;农业比较收益低下是造成家庭人口数量多的农户生态补偿意愿高的根本动因;农业经营者老龄化现象是导致生态补偿意愿下降的重要原因;而农业生产流动资本投入的增多将弱化了农户的生态补偿意愿。由此得出,生态补偿的实施还有待于进一步改进和完善,维持农民基本的生存和发展权利,通过技术培训提高劳动力的就业能力,调整当地产业结构,扶持农业优势(支持)产业形成,提高农业经营者的收益是生态补偿成功实施的重要保证。  相似文献   

大熊猫自然保护区退耕农户前期满意度及后续退耕意愿研究——以陕西长青自然保护区周边124退耕户为例   总被引：1，自引：1，他引：0  

王昌海  温亚利  郝春旭  时鉴 《资源科学》2010,32(10):2028-2035

基于陕西长青大熊猫自然保护区周边124退耕户实地调研有效问卷,探讨了该区退耕户退耕意愿及其影响因素。并利用Logistic模型研究了各相关因素对退耕户参与退耕意愿的具体影响。结果表明:农户愿意后续退耕的比例略高于不愿意继续退耕的比例,其中经济相对发达地区的农户退耕意愿高于经济相对欠发达地区;而在影响农户后续退耕意愿的诸因素中,退耕补贴所占收入比重、经济林的预期经济收益、后续技术指导以及农户的环保意识对退耕农户后续退耕意愿有着比较显著的影响。本研究为进一步巩固前期退耕成果提供借鉴和启示,为完善大熊猫自然保护区的生态补偿机制提供参考。  相似文献   

Ten good reasons to use the Eigenfactor™ metrics     

Massimo Franceschet 《Information processing & management》2010

The Eigenfactor score is a journal influence metric developed at the Department of Biology of the University of Washington and recently introduced in the Science and Social Science Journal Citation Reports maintained by Thomson Reuters. It provides a compelling measure of journal status with solid mathematical background, sound axiomatic foundation, intriguing stochastic interpretation, and many interesting relationships to other ranking measures. In this short contribution, we give 10 reasons to motivate the use of the Eigenfactor method.  相似文献   

欧盟环境影响评价法律体系初探——兼论我国环境影响评价法律体系的完善     

刘秋妹  朱坦 《未来与发展》2010,(3):83-88

欧盟环境影响评价法律体系以《关于环境影响评价的指令》及其修正案和《关于特定规划和计划的环境影响评价指令》为核心,其制定和实施极大地促进了其成员国环境影响评价制度的建立和完善,是世界环境影响评价立法领域的重要成就。本文首先从立法框架、适用范围、运行方式、公众参与以及法律实施效果回顾等方面简要介绍了欧盟环境影响评价法律体系．分析了该法律体系的特点。随后,基于对我国环境影响评价立法实践的回顾与特点总结．借鉴欧盟环境影响评价法律体系的经验做法,提出完善我国环境影响评价法律体系的若干建议。  相似文献   

A research synthesis of the impacts of successful educational actions on student outcomes     

《Educational Research Review》2022

  相似文献