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1.
国内外原油市场波动溢出效应的多元分析 总被引：4，自引：0，他引：4
本文通过构建的VAR（1）-MGARCH模型对我国原油市场与伦敦原油市场的波动溢出效应进行了实证研究，结果表明：我国市场与伦敦市场存在显著的双向波动溢出效应，但相比较而言，我国市场对伦敦市场波动溢出较伦敦市场对我国市场的波动溢出更为显著；考虑到我国原油的定价机制，我们认为这两个方向的波动溢出各自所代表的含义有所不同：我国市场对伦敦市场的溢出效应是两种效应的综合结果，而伦敦对我国的波动溢出代表则是一种间接影响；最后依据研究结论，本文提出了我国原油进口安排需要注意的问题。 相似文献
2.
《中国科学院院刊(英文版)》2011,25(4):255-257
As a research professor at the Guangzhou Institutes of Biomedicine and Health (GIBH), Chinese Academy of Sciences, Miguel Esteban is the first non-Chinese scientist to chair a major scientific research program in China. Born and educated in Spain and the UK, he worked in Madrid and London as a scholar and physician before joining GIBH in January 2008. Just two years after his arrival, in 2010, Professor Esteban was named by the Chinese Ministry of Science and Technology as the chief scientist of a five-year major research program on stem cell study with a grant up to 28 million yuan (about 4.4 million US dollars). The following is a brief interview between BCAS reporter XIN Ling and the Professor about his work and life in China. 相似文献
3.
浙江蓝野酒业有限公司（以下简称蓝野公司）是“蓝色风暴”商标的注册人。该商标由文字、拼音和图形组合而成,于2003年核准注册,核定使用的商品包括啤酒、可乐等。除了生产少量的“蓝色风暴”啤酒外,蓝野公司从未生产过可乐,也没有在可乐商品上使用过“蓝色风暴”商标。 相似文献
4.
Howard E. Aldrich 《Research Policy》2012,41(7):1240-1248
The academic field of entrepreneurship research has grown from groups of isolated scholars doing research on small businesses to an international community of departments, institutes, and foundations promoting research on new and high-growth firms. Growth has produced increasingly systematic and interconnected knowledge and growing numbers of knowledge producers and knowledge users share core concepts, principles, and research methods, and a handful of highly cited scholars have emerged as thought leaders within research subfields. The field is increasingly formalized and anchored in a small set of intellectual bases, although there are also some signs of differentiation and fragmentation. Using an institutional theory perspective and drawing upon my experience in the field, I explore six forces creating the institutional infrastructure. First, social networking mechanisms have created a social structure facilitating connections between researchers. Second, publication opportunities have increased dramatically. Third, training and mentoring has moved to a collective rather than individual apprenticeship model. Fourth, major foundations and many other smaller funding sources have changed the scale and scope of entrepreneurship research. Fifth, new mechanisms have emerged that recognize and reward individual scholarship, reinforcing the identity of entrepreneurship research as a field and attracting new scholars into it. Sixth, globalizing forces have affected all of these trends. I conclude with some thoughts about the consequences of these developments with regard to the giving of practical and timely advice to entrepreneurs, the effects of American hegemony on choices of research topics and methods, and the possible loss of theoretical eclecticism. 相似文献
5.
铁路作为一国的重要基础设施,是国民经济的重要基础产业。世界各国的铁路,在促进本国经济的发展中,都发挥了巨大的推动作用,加速了本国的现代化进程。铁路运输作为一种大众化的交通工具,运价低廉、安全可靠、快捷便利,成为广大人民出行的首选交通工具。分析了铁路运输中的一些基本原则,对车站值班员在列车运行中需要具备的一些素质和应急处理进行了研究。 相似文献
6.
创新体系是建设创新型国家的重要组成部分,我国创新体系建设尚处于起步发展阶段,需要借鉴国外先进国家创新体系建设的经验。以伦敦为例,分析了伦敦创新的现状,创新体系构成及其城市创新体系运行模式,并指出了对我国创新体系建设的借鉴意义。 相似文献
7.
Jones RA 《Endeavour》2005,29(2):84-88
The stereotypical scientist wears a lab-coat, is often eccentric and is usually male. Images of female scientists in popular culture remain rare. Some of the first portrayals of women in science occurred in a handful of British films made during the 1950s and 1960s. These films reflected the difficulties experienced by women in science at the time, but they might also explain why representations of female scientists in film continue to downplay their role as scientists and emphasize their identity as women. 相似文献
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9.
Blood,politics, and social science. Richard Titmuss and the Institute of Economic Affairs, 1957-1973
Fontaine P 《Isis; an international review devoted to the history of science and its cultural influences》2002,93(3):401-434
Long before his last book, The Gift Relationship: From Human Blood to Social Policy, was published in early 1971, Richard M. Titmuss (1907-1973), a professor of social administration at the London School of Economics, had been a major figure in the debates over the welfare state. The Gift Relationship was the culmination of an eventful relationship with the Institute of Economic Affairs, a think tank that advocated the extension of rational pricing to social services. By arguing that the British system of blood procurement and distribution, based on free giving within the National Health Service, was more efficient than the partly commercialized American system, Titmuss intended to signal the dangers of the increasing commercialization of society. What made for the impact of his book, however, was not merely its argument that transfusion-transmitted infections were much more common with paid than with voluntary donors, but also its reflections on what it is that holds a society together. And here Titmuss argued that a "socialist" social policy, by encouraging the sense of community, played a central role. The eclecticism of Titmuss's work, together with its strong ethical and political flavor, makes it a rich and original account of the "social" at a time when heated debated over social policy, both in Britain and in the United States, raised the question of the division of labor among the social sciences. 相似文献
10.
基于CDIO教育理念的日语专业一级项目的构建与实施——以日语专业导论项目为例 总被引：1，自引：0，他引：1
本论文以大连东软信息学院CDIO教育教学改革为背景,结合社会对日语人才能力需求的变化,运用CDIO工程教育理念将日语专业进行了一体化的项目设计。拟通过对一体化项目设计中的基石项目——日语专业导论项目的构建与实施,总结一级项目的特色和存在的问题,不断改进提高,为社会输送更多的应用型商务日语人才。 相似文献
11.
为研究利用氧化剂快速控制活性污泥工艺中的丝状菌污泥膨胀问题,本试验以啤酒废水作为底物,利用SBR进行投加氯气来控制丝状菌污泥膨胀的研究。结果表明,氯气在膨胀控制期间投加量宜控制在30mg/L以内,运行7周期膨胀得到控制。此时污泥降解底物能力有所下降,但出水水质并未恶化,出水COD,氨氮和总磷分别为78.3mg/L、3.15 mg/L、0.38 mg/L。pH值是影响氯气氧化作用的重要因素,SVI随环境pH值的增大缓慢上升;运行至第9周期,COD去除率随pH值的增大快速上升。 相似文献
12.
《Information processing & management》2022,59(1):102750
In the last few years, intelligent transport systems (ITS) have drawn growing attention, and these applications would have a clear and more comfortable experience for transportation. ITS provides applications with a chance to address the future condition on the route beforehand. The major issues in ITS to accomplish a precise and effective traffic flow prediction system are essential. Therefore, in this paper, a machine learning-assisted intelligent traffic monitoring system (ML-ITMS) has proposed improving transportation protection and reliability to tackle several challenges. The suggested ML-ITMS uses mathematical models to improve the accuracy estimation of traffic flow and nonparametric processes. The Machine Learning-based (ML) method is one of the best-known methods of nonparametric. It requires less prior information about connections between various traffic patterns, minor estimation limitations, and better suitability of nonlinear traffic data features. Human-Robot Interaction (HRI) helps resolve crucial issues concurrently on both the customers and service supplier levels at both ends of the transport system. Thus the experimental results show the proposed ML-ITMS to enhance traffic monitoring to 98.6% and better traffic flow prediction systems than other existing methods. 相似文献
13.
为推动成渝地区建设成为具有全国影响力的科技创新中心,通过梳理和归纳城市群科技创新中心的内涵和发展研究,以旧金山湾区、伦敦湾区、东京湾区和粤港澳大湾区为例,分析总结国内外著名城市群科技创新中心的建设情况,发现丰富的教育科研资源、较为完善的科技金融体系、较为成熟的产业集群结构以及良好的创新创业环境有助于推动城市群科技创新发展。结合成渝地区现有的科技创新基础和面临的挑战,提出成渝地区要打造全国具有影响力的科技创新中心,需要进一步健全合作创新机制、强化协同创新格局、培育重大原始创新、筑牢关键核心产业、完善科技服务体系、优化创新合作网络、聚集顶尖科创人才等。 相似文献
14.
We relate innovation to sales growth for incumbent firms in high-tech sectors. A firm, on average, experiences only modest growth and may grow for a number of reasons that may or may not be related to innovative activity. However, given that the returns to innovation are highly skewed and that growth rates distributions are heavy-tailed, it may be misleading to use regression techniques that focus on the ‘average effect for the average firm’. Using a quantile regression approach, we observe that innovation is of crucial importance for a handful of ‘superstar’ fast-growth firms. 相似文献
15.
Richard Lower was a distinguished member of the scientific community which flourished in Oxford from 1643 to 1667, many of whose members later migrated to London to form the nucleus of the Royal Society. Lower made notable contributions in the study of both anatomy and physiology and he also practised medicine, eventually becoming the leading London physician of his day. In spite of his achievements, he remains largely unknown, being overshadowed by his illustrious contemporaries, amongst whom were Thomas Willis, Robert Boyle, John Locke, and Robert Hooke. 相似文献
16.
伦敦成为世界最大的金融产业集散地之一,国际金融企业在伦敦集聚所形成的金融服务业集群已经举世瞩目.因此,剖析伦敦金融服务业集群的形成与发展的特殊性,探讨集群的结构和成因等具有理论和实际意义. 相似文献
17.
关于我国尽快实行综合运输管理体制的思考 总被引：7，自引：0，他引：7
我国运输业的发展正在进入一个重要的阶段转换时期,运输系统本身越来越复杂,交通运输与社会经济及资源环境的矛盾越来越突出,对运输方式之间连接性、一体化以及可持续运输发展方式的要求也已经越来越强烈,而目前条块分割的运输业管理体制正在成为我国运输业进一步健康发展的主要障碍。必须尽快克服体制障碍,提高驾驭现代运输管理体制的能力。通过组建运输部、制定综合运输政策与规划等步骤形成综合运输管理体制,是比单纯提高运输能力和技术水平更为迫切的重大任务。 相似文献
18.
搜索技术的现状及发展前景 总被引：4，自引：0，他引：4
对搜索引擎的排序规则、语义理解能力、双字节处理水平和个性化搜索的技术局限和发展现状进行了分析，对桌面搜索、视频搜索和搜索引擎的细化、全能化发展趋势进行了研究。 相似文献
19.
In a droplet transport based on electrowetting on dielectrics, the parallel-plate configuration is more popular than the single-plate one because the droplet transport becomes increasingly difficult without cover plate. In spite of the improved transport performance, the parallel-plate configuration often limits the access to the peripheral components, requesting the removal of the cover plate, the single-plate configuration. We investigated the fundamental features of droplet transport for the single-plate configuration. We compared the performance of several switching methods with respect to maximum speed of successive transport without failure and suggested nonfloating switching method which is inherently free from the charge-residue problem and exerts greater force on a droplet than conventional switching methods. A simple theory is provided to understand the different results for the switching methods. 相似文献
20.
刘杨 《科技成果管理与研究》2010,(1):72-73
某啤酒生产企业根据啤酒生产废水有机物浓度较高,可生化性好的特点,选择了“UASB反应器＋生物接触氧化工艺”二级处理工艺。UASB厌氧处理工艺去除了大部分有机物,减轻了后续好氧处理工艺的处理压力,达到较好的处理效果。运行结果表明,经该工艺处理后,废水中的COD、BOD5等指标均能达标排放,有利于企业的可持续发展。 相似文献