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目前,我国的岩土工程勘察中还存在着一些问题,这些问题严重影响着建筑企业的施工安全和经济效益。因此,文章主要探究岩土工程勘察中存在的问题,并在这些问题的基础上,提出一些解决对策。 相似文献
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分析了非煤露天采石场在安全生产过程中普遍存在的一些问题,提出了当前露天矿山安全生产的一些对策措施;同时也分析了主管部门以及中介机构存在的一些问题,相应的提出了一些对策措施。 相似文献
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国企改革后,电力企业员工纳入到社会保险体系中来,在这种转变下,部分企业和员工存在一定的认识误区,为实际工作带来了一些问题,文章简要分析了电力企业必须加强社会保险工作的重要意义和社会保险工作中出现的一些问题,以及应对这些问题的一些对策。 相似文献
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笔者在液化石油气充装站充装许可鉴定评审过程中,各液化石油气充装站在现场条件方面所存在的一些共性问题,以及在实际评审工作中要特别注意的一些问题进行了有益的探讨和阐述. 相似文献
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在变电运行的管理过程中,由于种种条件的限制,仍存在一些不容忽视的问题。本文针对变电运行中存在的一些问题进行分析,并且提出防范和解决的措施。 相似文献
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公积金制度在整个财务管理及运行过程中必然存在一些问题,本文分析了公积金财务管理存在的问题,并提出了解决相关问题的一些措施,供大家参考。 相似文献
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假使我们在对审计事项判断中遇到一些模糊性问题时能有一种更加理性且合理的解决思路,那么这种思路将是最佳的选择。扎德创立的《模糊集合论》给了我们很好的启示。本文将对离任审计工作中存在的一些模糊性问题进行系统分析,其目的是为我们在审计工作中遇到的一些困惑问题提供一种新的思考方法。 相似文献
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Riccardo Crescenzi Andrés Rodríguez‐Pose 《International journal of urban and regional research》2017,41(6):1010-1027
The BRICS countries in general, and China and India in particular, are now widely regarded as the areas of the world likely to challenge the economic leadership of the United States (US) and the European Union (EU). A large part of this challenge will come from rapid technological catch‐up by China and India. Yet, despite a recent rise in interest, there is limited knowledge about how and where innovation takes place in these two leading emerging countries and to what extent the Chinese and Indian territorial systems of innovation differ from those in the EU or the US. In this article we explore the geography of innovation in China and India, concentrating on understanding key territorial‐level innovation trends by country, region and technology field, using the US and the EU as benchmarks. We find significant contrasts between the geography of innovation in China and India and that of the US and the EU. First, the degree of concentration of innovative activities in both countries is extremely high. Levels of agglomeration of innovation in the coastal provinces of China, as well as in Delhi and the South of India, significantly exceed the levels of agglomeration found in the USA and the EU. Secondly, China has witnessed a more rapid increase in the degree of concentration of innovation than India. We posit that the differences in the geography of innovation between, on the one hand, China and India and, on the other hand, between these countries and the developed world are rooted in different institutional settings, different systems of innovation and different national innovation strategies. 相似文献
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通过对江苏吴江市和浙江绍兴县两地部分建制镇和部分原农村居民点的实地调研 ,作者认为 ,目前两地农村工业化、城市化处于发展的上升期 :中心镇经济和城市化发展相当快 ;中心镇以下的部分行政村异地或就地实现城市化。在城市化进程中 ,以下问题有待探讨解决 :迁村并点、撤乡并镇的速度与规模 ;城镇建设用地指标及相关政策 ;社区建设改造过程中 ,农民征地拆迁补偿标准和社会保障等。 相似文献
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Arif Mehmood Byung-Won On Ingyu Lee Han Woo Park Gyu Sang Choi 《Quality and Quantity》2018,52(2):801-813
Worldwide medical facilities differ, and for this reason, the causes of death can vary. Cancer is considered the second leading cause of death after heart disease worldwide, and the same causes of death are observed in the United States (US). Therefore, the purposes of this study are to explore worldwide research levels in the field of cancer and the social collaboration of researchers and institutions in this field. This article examines the structural patterns of international co-authors and co-institutions in science citation index papers in cancer research. The study uses measures from the social network analysis method, including degree centrality, betweenness centrality, eigenvector centrality, and effectiveness, to investigate the effects of social networks in the area of cancer research. Empirical analysis results identify the US is the most central country, followed by Germany, Italy, France, and China, in terms of co-authored networks in this research field. Institutional analysis results indicate that the University of Milan is at the top in terms of degree centrality. The Gustave Roussy Cancer Campus in France and German University of Düsseldorf occupy the second and fourth positions, respectively. The University of California in Los Angeles and Harvard University, both in the US, are at third and fifth positions, respectively. 相似文献
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Yehuda Baruch Patricia Clancy 《International Journal of Human Resource Management》2013,24(4):789-806
The impact of the AIDS epidemic in developing countries, and in Africa in particular, is now a matter of great concern to policy makers, managers, and academics on a global scale. The magnitude of the potentially disastrous effects of the disease has severe implications for management in organizations, and, in particular, for HRM. The AIDS epidemic is imposing, and will continue to impose, in the foreseeable future, a significant burden on the way people are managed. Little has been written on HRM in Africa, and the present literature on AIDS and HRM in Western societies is inappropriate and insufficient in relation to African organizations. Fifteen organizations in Tanzania took part in this study, which is probably the first of its kind, to produce a picture of current developments and approaches in managing people under the threat of AIDS. 相似文献
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社会管理和公共服务是现代城市的两大基本职能.保障城市公共安全,实施防灾减灾是城市履行管理与服务职能的重要内容.首先,综述国际城市防灾减灾的合作和研究的主要进展;其次,基于城市生态经济系统特征,探讨城市灾害系统的结构功能和形成机制,分析中国城市灾害风险的特征;再次,提出中国城市防灾减灾体系的建设战略,包括:确立城市安全发... 相似文献
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Following the waves of corporate scandals and the increasing attention to corporate governance, the transparency of reporting on director-level pay has increased across Europe. This article examines the extent of convergence in laws, codes and corporate reporting practices in regard to director-level pay in France, Germany, Switzerland and the UK. The paper analyses annual reports and the websites of 23 companies, using institutional theory to discuss the coercive, normative and mimetic pressures for convergence that are revealed, not just in the laws and codes in each country, but also in the standardized wording in the relevant sections of reports which have become clichés. 相似文献
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We examine the behavior of stock market prices in several African countries by means of fractionally integrated techniques.
In doing so, we can test for mean reversion in these markets. Our results can be summarized as follows: we cannot find evidence
of mean reversion in any single market, and evidence of long memory returns (i.e., orders of integration above 1 in the logged
stock prices) is obtained in the cases of Egypt and Nigeria, and, in a lesser extent in Tunisia, Morocco and Kenya. Permitting
the existence of a structural change, the break dates take place in the earlier 2000s in the majority of the cases, and evidence
of mean reversion seems to have taken place in the periods before the breaks in most of the countries. If we focus on the
absolute and squared returns, evidence of long memory is obtained in Nigeria and Egypt. Thus, for these two countries, a long
memory model incorporating positive fractional degrees of integration in both the level and the volatility process should
be considered. 相似文献
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Jim Ramsay was born on September 5, 1942, in Prince George, British Columbia. He pursued undergraduate studies at the University of Alberta, where he completed a BEd in 1964 with a major in English and a minor in mathematics. He then specialized in statistics and psychometry, earning a PhD in psychology from Princeton University in 1966. After holding a temporary lectureship in the Department of Psychology at University College London for one year, he joined the Department of Psychology at McGill University, where he rose through the academic ranks. He was chair of his department from 1986 to 1989 and spent sabbatical leaves in Cambridge, Grenoble, and Toulouse. He was named professor emeritus upon his retirement in 2007. Jim is the author of four influential books and over 100 peer‐reviewed articles in statistical and psychometric journals. He developed much of the statistical theory behind multidimensional scaling and is widely recognized as the founder of functional data analysis. Three of his papers were read to the Royal Statistical Society, and another won The Canadian Journal of Statistics 2000 Best Paper Award. The Statistical Society of Canada (SSC) awarded him a Gold Medal for research in 1998 and an honorary membership in 2012. Jim was president of the Psychometric Society in 1981–82 and president of the SSC in 2002–03. The following conversation took place at Jim's home in Ottawa, Ontario, on March 14 and April 4, 2012. 相似文献
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《International Journal of Forecasting》2006,22(2):283-300
The recent deregulation in electricity markets worldwide has heightened the importance of risk management in energy markets. Assessing Value-at-Risk (VaR) in electricity markets is arguably more difficult than in traditional financial markets because the distinctive features of the former result in a highly unusual distribution of returns—electricity returns are highly volatile, display seasonalities in both their mean and volatility, exhibit leverage effects and clustering in volatility, and feature extreme levels of skewness and kurtosis. With electricity applications in mind, this paper proposes a model that accommodates autoregression and weekly seasonals in both the conditional mean and conditional volatility of returns, as well as leverage effects via an EGARCH specification. In addition, extreme value theory (EVT) is adopted to explicitly model the tails of the return distribution. Compared to a number of other parametric models and simple historical simulation based approaches, the proposed EVT-based model performs well in forecasting out-of-sample VaR. In addition, statistical tests show that the proposed model provides appropriate interval coverage in both unconditional and, more importantly, conditional contexts. Overall, the results are encouraging in suggesting that the proposed EVT-based model is a useful technique in forecasting VaR in electricity markets. 相似文献