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为探究技术进步与能源消费的内在关系,本文采用面板门槛回归方法,结合1990—2012年我国省际面板数据构建面板门槛回归模型,以经济发展水平为门槛变量,实证研究了技术进步对能源消费的影响。研究显示:技术进步对能源消费的影响存在显著的"经济门槛效应",当经济发展水平高于门槛值时,虽然技术进步仍会促进能源的消耗,但其推动作用会逐步减弱,且东部地区技术进步对能源消费的促进作用要小于中西部地区。 相似文献
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采用我国2000—2014年30个省份的面板数据构建面板门槛回归模型,从FDI及其与环境规制相结合的角度实证分析FDI对技术创新的影响。研究结果表明,FDI对技术创新存在显著的门槛效应,当经济发展水平和环境规制强度跨越相应门槛时,其能有效促进技术创新;环境规制会抑制FDI技术溢出效应,对技术创新产生间接影响;FDI技术溢出效应存在明显的地区性差异。政府应结合不同地区的现状,有针对性地提高地区经济发展水平,合理制定地区环境规制强度,以此显著提升地区技术创新能力。 相似文献
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基于中国2000~2013年的省际面板数据,以第三产业与第二产业产值之比度量产业结构变动,在将地区市场化水平纳入分析框架的前提下,采用门槛回归分析方法,对产业结构变动与能源消费之间的关系进行实证考察.结果表明,产业结构变动对能源消费存在显著的基于地区市场化水平的"双门槛效应",即产业结构变动与能源消费之间存在显著的非线性关系,随着地区市场化水平的提高,产业结构变动对降低能源消费的作用越来越大. 相似文献
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基于中国1995-2013年省级面板数据,本文利用门槛面板模型检验了金融发展水平与海归回流知识溢出效应的关系。结果发现:海归回流知识溢出与技术进步的联系显著依赖于各省市金融发展水平,只有当金融发展水平越过一定门槛值之后,海归回流才会对回流国产生显著的技术进步正效应;当金融发展水平跨越第二个门槛值时,东、中、西部地区的海归回流对技术进步的影响效应均为正,且东部地区的海归回流对东部地区技术进步的影响存在明显的"加速、跃升"正效应,但西部地区海归回流对该区的技术进步效应产生的促进作用较为有限。本文认为受金融发展水平门槛限制,我国金融发展水平相对低下的省份还不能为释放更多的海归知识溢出效应提供必要的金融环境支持。 相似文献
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基于2004—2012年中国工业行业31个细分行业的面板数据,采用门槛回归技术实证研究了贸易自由化对研发技术进步影响的异质门槛效应。研究表明:(1)贸易自由化与研发技术进步呈倒"N"型的非线性关系,即随着贸易自由化水平由低变高,其对研发技术进步会产生先降低后提高再降低的影响规律;(2)贸易自由化的研发技术进步效应还取决于市场化水平、外商直接投资等影响,在环境规制、外商直接投资及行业利润门槛条件下贸易自由化对研发技术进步的影响总体呈负向效应,而在市场化水平门槛条件下呈倒"U"型特征,在企业规模门槛条件下呈"U"型特征;(3)不同门槛条件下贸易自由化对研发技术进步的门槛效应存在明显的行业异质性特征,其中具有负向影响的行业分布较为集中。 相似文献
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基于2004—2012年中国工业行业31个细分行业的面板数据,采用门槛回归技术实证研究了贸易自由化对研发技术进步影响的异质门槛效应。研究表明:(1)贸易自由化与研发技术进步呈倒"N"型的非线性关系,即随着贸易自由化水平由低变高,其对研发技术进步会产生先降低后提高再降低的影响规律;(2)贸易自由化的研发技术进步效应还取决于市场化水平、外商直接投资等影响,在环境规制、外商直接投资及行业利润门槛条件下贸易自由化对研发技术进步的影响总体呈负向效应,而在市场化水平门槛条件下呈倒"U"型特征,在企业规模门槛条件下呈"U"型特征;(3)不同门槛条件下贸易自由化对研发技术进步的门槛效应存在明显的行业异质性特征,其中具有负向影响的行业分布较为集中。 相似文献
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基于中国2003-2010年省域面板数据,以信息化发展指数(IDI)作为门槛变量,构建面板数据门槛回归模型,实证检验技术获取型FDI溢出对技术进步的作用效果。结果表明:人力资本、研发投入是长期推动我国技术进步的重要因素。区域信息化发展不均衡,东部地区门槛值最高,中部地区门槛值最低且呈现集中趋势,西部地区门槛值跨度最大。随着信息化水平的提升,全国与西部地区的技术获取型FDI溢出对技术进步的促进作用呈现出"两头高、中间低"且明显增强的趋势,东部地区呈现稳步增强的促进趋势且贡献率最高,中部地区的抑制作用正逐渐减弱。 相似文献
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中国能源消费强度的区域差异及影响因素分析 总被引：12，自引：2，他引：10
能源消费强度反映国民经济发展中对能源的利用效率,其变动方向及影响因素受到学术界广泛关注。但研究中大多以我国总体能源消费强度的变化为对象,对地域差异关注不足。本文选取多项指标,构建能源消费规模份额指数、能耗强度指数、增长速度指数、综合消费指数,从不同角度刻画中国能源消费的区域差异。在此基础上,利用回归分析法,定量研究了地区能源消费强度的影响因素。结果表明,我国地区间能源消费强度的差异与地区总体经济发展水平、地区工业化程度、地区经济重型化程度存在直接关系,尤其是地区经济重型化程度的提高将会显著增加地区经济能耗强度。现阶段,控制高耗能重化工业的重复建设与盲目投资。对于减小能源消耗强度具有重要的意义。同时,经济发展水平和经济结构的地域差异性,要求我国能源战略的推进与实施必须制定相应的地区政策才能确保国家宏观战略的顺利实施。 相似文献
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《中国科学院院刊(英文版)》2008,22(1):13-14
Aresearch project on the greenhouse cultivation of Swertia chirayita Buch Ham, a popular herbal drug used by the Tibetan people against liver and gallbladder diseases, recently passed the acceptance check by a panel of experts under the auspices of Qinghai Provincial S＆T Bureau. The feat was accomplished by researchers from the Lanzhoubased CAS Northwest Institute of Plateau Biology. 相似文献
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The research into the origins of domestic animals is of significance not only for understanding their development per se but also for making clear the human society evolution. Although there are evidences to show that pigs were independently domesticated in a variety of places throughout the world the detailed scenario of the origin dispersal of domestic pigs in East Asia remains unclear.…… 《中国科学院院刊(英文版)》2008,22(1):7-7
The research into the origins of domestic animals is of significance not only for understanding their development per se, but also for making clear the human society evolution. Although there are evidences to show that pigs were independently domesticated in a variety of places throughout the world, the detailed scenario of the origin and dispersal of domestic pigs in East Asia remains unclear. 相似文献
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Among the galaxy of research development organizations in northwest Beijing's Zhongguancun district known as China's Silicon Valley two are especially well-known to IT researchers: Microsoft Research Asia 《中国科学院院刊(英文版)》2008,22(1):47-49
Among the galaxy of research and development organizations in northwest Beijing＇s Zhongguancun district, known as China＇s Silicon Valley, two are especially well-known to IT researchers： Microsoft Research Asia （MSRA）, and, within a few blocks on the other side of the street, the CAS Institute of Automation （CASIA）. While most people in Chinese scientific organizations strive to move to a large foreign counterpart, Dr. Stan Z. Li （LI Ziqing） moves against the stream. 相似文献
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《中国科学院院刊(英文版)》2008,22(1):2-3
CAS should stick to the principle of rendering service to, and giving impetus for, the development of China＇s science enterprise by making S＆T innovations, said CAS President LU Yongxiang. The CAS president made the remarks in a recent talk to communicate the gist of the winter session of the Party＇s Leading-member Group at CAS, which was held from 7 to 11 January in Beijing. 相似文献
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《中国科学院院刊(英文版)》2008,22(1)
With great care, Dr. ZHOU Zhonghe takes out a package wrapped by cotton tissue from a drawer and says: "This is the gem of our collections: the fossil of a bird that lived 125 million years ago!" Then, pointing at a tiny mound, he explains: "Look, this is the claw and that is the head. It was in the egg shell and ready to hatch ... The species fell into a family of waterside inhabitants." 相似文献
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《中国科学院院刊(英文版)》2008,22(1):58-58
As a key component of the national initiative for basic S＆T data and infrastructure development, a nationwide survey on the lake water quality, volume and bio-resources has recently been kicked off. The move marks the systematic implementation of the secondround investigation of the country＇s lacustrine resources. 相似文献
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Bats the only mammals known to possess the real ability to fly have fascinated zoologists for a long time with their long-distance migration. How do they find their way home from an altitude of kilometers above sea level where their stunt of ultrasonic echolocation does not work?…… 《中国科学院院刊(英文版)》2008,22(1):3-4
Bats, the only mammals known to possess the real ability to fly, have fascinated zoologists for a long time with their long-distance migration. How do they find their way home from an altitude of kilometers above sea level, where their stunt of ultrasonic echolocation does not work？ Recent discoveries supported the theory that bats might be able to use magnetic clues to figure out their own position,just like what birds do. However, the latest results from a joint study by a group of researchers from the CAS, East China Normal University and University of Auckland reveal that bats apply an interesting strategy different from the one underlying birds＇ orientation technique, though they both are believed to derive information about their position from the subtle changes in the magnetic field of the Earth. 相似文献
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《中国科学院院刊(英文版)》2014,(3):252-252
<正>On February 12,2014,the international academic journal Cancer Research published an article online entitled"Latency Associated Nuclear Antigen of Kaposi's Sarcoma Associated Herpesvirus Promotes Angiogenesis through Targeting Notch Signaling Effector Hey1",as a result from the research conducted by Prof.LAN Ke’s lab at the Institut Pasteur of Shanghai,Chinese Academy of Sciences. 相似文献
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SONG Jianlan 《中国科学院院刊(英文版)》2014,(3):217-220
<正>Scientists from CAS and the Max Planck Society(MPG)met on May 13,2014 in Beijing to celebrate their four-decade-long ST cooperation and cherished friendship,anticipating further development of the bilateral relation.This partnership formally began four decades ago with a visit paid by then MPG President,Prof.Lüst to CAS,introduced CAS President BAI in his address at the celebration:"During the visit,CAS and MPG confi rmed the basic principles of cooperation,that is equality and mutual benefi ts for both sides,and reached agreement to develop a collaborative partnership."This occurred only two years after the establishment of the diplomatic relations between Germany and China,despite the shadow of the Cold War."Building up a partnership between Germany and 相似文献
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TANG Kun 《中国科学院院刊(英文版)》2014,(2):161-165
<正>The scientifi c goals of the Partner Group are to utilize large scale genomic polymorphism data to make fi ne inferences about human demographic history and various forms of natural selection in the human genome;and to understand the genetic basis and evolutionary mechanisms underlying the common variations in human facial morphology,both within and between populations. 相似文献