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81.
82.
1基本概况田山灌区位于济南市平阴县及泰安市肥城市境内,是山东省境内最大的电力引黄灌溉工程。1968年兴建,1971年投入运行,设计灌溉面积31·7万亩,排洪汇水面积55km2。灌区内既有山地丘陵,又有山前平原和沿黄低洼唇地,地形复杂。主体工程有:一级与二级提水泵站各一座,扬程分别 相似文献
83.
Tim Brailsford Richard Heaney Jing Shi 《International Review of Financial Analysis》2004,13(2):119-132
This paper analyses the time series behaviour of the initial public offering (IPO) market using an equilibrium model of demand and supply that incorporates the number of new issues, average underpricing, and general market conditions. Model predictions include the existence of serial correlation in both the number of new issues and the average level of underpricing, as well as interactions between these variables and the impact of general market conditions. The model is tested using 40 years of monthly IPO data. The empirical results are generally consistent with predictions. 相似文献
84.
我国的银行业进行信用风险评级,虽然在技术上有一定的“后发优势”,但是绝对不是简单的“直接拿来”。信用风险的内部评级工作需要根植于内部数据,开发适合中国实际情况的评级模型。本文从银行内部评级的角度,对信用风险评级的若干问题进行了讨论,并提出了适当的处理方式。 相似文献
85.
施纪卫 《石油工业技术监督》2005,21(5):133-133,137
随着陕甘宁气田的开发建设和下游用户的落实.陕西省的第一条长输管道靖西线随之兴建.一期输气能力为5亿m^3/a。在此之后又相继建成咸阳至宝鸡、西安至渭南两条输气管线.靖西输气管线输气量逐年上升.自1997年建成通气以来向下游城市累计输送天然气10.3亿m^3。冬季的用气高峰期日输气量已超过原设计能力.2000年达183万m^3,为保证下游高峰用气.于2001年建成靖边压气站并投入使用. 相似文献
86.
分析了胜利油田集输系统常见的腐蚀类型和腐蚀机理,分别阐述了各种局部腐蚀的防护措施,并综合对比了各种防腐方法的优缺点.指出根据不同区块的实际腐蚀环境、介质及工艺条件,因地制宜、有的放矢地制定经济、合理的防腐措施是减缓和控制腐蚀的有效途径。 相似文献
87.
Haiyan Jiang Yuanyuan Hu Honghui Zhang Donghua Zhou 《The International Journal of Accounting》2018,53(4):255-273
This paper examines the role of downward earnings management and political connection on the receipt of government subsidies and market pricing of subsidies. Using subsidies data hand-collected from Chinese listed firms over the period 2004–2014, the results show a significantly positive association between downward earnings management and the receipt of government subsidies. The results also reveal that a firm's political connection is conducive to securing subsidies for poor performers, but not for good performers. Market pricing analyses demonstrate that share markets value subsidies positively in general, but the effect is ameliorated in firms conducting downward earnings management. No discernible difference is found between the market pricing of subsidies received by firms with political connections and those without. 相似文献
88.
Over the past three decades, China has undergone tremendous economic and social change as a consequence of the transition from a centrally planned to a market economy. This paper examines a key feature of this transition – the privatization of the state‐owned enterprises (SOEs) – through both a theoretical model and empirical analysis. Using newly collected primary data from a variety of sources, we study how privatization of listed SOEs affects employment, wages, profits and other aspects of economic performance at the firm level. Our major finding is that privatization results in substantial downsizing of employment, increased labour productivity and rising profitability. 相似文献
89.
90.
In the probabilistic risk aversion approach, risks are presumed as random variables with known probability distributions. However, in some practical cases, for example, due to the absence of historical data, the inherent uncertain characteristic of risks or different subject judgements from the decision-makers, risks may be hard or not appropriate to be estimated with probability distributions. Therefore, the traditional probabilistic risk aversion theory is ineffective. Thus, in order to deal with these cases, we suggest measuring these kinds of risks as fuzzy variables, and accordingly to present an alternative risk aversion approach by employing credibility theory. In the present paper, first, the definition of credibilistic risk premium proposed by Georgescu and Kinnunen [Fuzzy Inf. Eng., 2013, 5, 399–416] is revised by taking the initial wealth into consideration, and then a general method to compute the credibilistic risk premium is provided. Secondly, regarding the risks represented with the commonly used LR fuzzy intervals, a simple calculation formula of the local credibilistic risk premium is put forward. Finally, in a global sense, several equivalent propositions for comparative risk aversion under the credibility measurement are provided. Illustrated examples are presented to show the applicability of the theoretical findings. 相似文献