浅析路桥施工过程产生的问题及其处理方案

文章针对路桥施工过程产生的预应力技术问题、体外加固问题、防水层质量问题等几个典型问题及其处理方案进行了分析和探究。     

苏里格气田苏54区块气水分布特征分析

在地层水化学分析、气水层的识别的基础上,对苏里格气田苏54区块气水的分布特征及分布规律开展深入研究。区块东部基本不产水,其余区域均有地层水的存在,并且在一定程度上具有连片分布的特征。2012年在东部筛选不产水的区域集中,Ⅰ+Ⅱ类井比例达到72.0%,平均无阻流量10.6×104m3/d,2口水平井试气均达百万方,开发效果良好。     

岩屑图像录井技术在海拉尔盆地的应用

为提高海拉尔盆地油气水层识别和岩性识别能力,进行了岩屑图像录井技术现场试验。阐述了岩屑图像录井技术的技术原理和特点,并对试验过程中的技术应用效果进行了总结分析,同时进行了经济效益初步评价,为岩屑图像录井技术在海拉尔盆地的推广应用提供可靠依据。     

Estimating effects of cooperative membership on farmers’ safe production behaviors: Evidence from pig sector in China

This research studies the determinants of pig farmers’ participation in farmers’ cooperatives and the effects of farmers’ cooperatives on pig farmers’ behaviors in adopting safe production practices using data from a household survey of 540 cooperative farmers and 270 non-cooperative farmers from four main pig production provinces in China. The propensity score matching (PSM) method was adopted to deal with possible self-selection bias associated with farmers’ participation in farmers’ cooperatives due to observables, which is further supplemented by a sensitivity analysis to assess the degree to which the PSM results are robust to the presence of unobservables. The PSM results show that the cooperative membership has significant and positive influence on farmers’ propensity to adopt safe production practices and the effects are heterogeneous across a number of key cooperative, farm and household attributes. Specifically, the membership effects tend to be bigger for cooperatives led by Investor-owned firms (IOFs) and farms of small production scale. And the effects tend to be greater for households (1) of medium and high level of education, (2) of less than 10 years of pig production experience, (3) of no off-farm job experience, and (4) that are specialized in pig production. The sensitivity analysis further increases our confidence in the results for the feed use and the breed use, however, the results for vaccination, drug use and waste disposable are more sensitive to the influence of unobservables, therefore should be interpreted with caution.     

我国西部地区资源型城市发展与新型城镇化路径研究

我国西部地区自然资源丰富,有许多城市都是靠自然资源的开发而逐步兴起和发展起来的,这些城市在新型城镇化进程中,除了面临西部地区共有的一些困难外,还有其特有的一些阻碍新型城镇化的因素.有必要从“以人为本”,提高人民生活整体水平的角度出发,促进西部地区资源型城市的发展,为新型城镇化的发展铺平道路.     

双金属复合弯管及管件生产检验过程存在问题探讨

管线输送介质成分越来越复杂,对管线内壁抗腐蚀性能的要求也越来越高,一些管线被设计为双金属复合管线。由于双金属复合弯管和管件没有国家和行业标准可指导生产检验,造成了复合弯管和管件在生产检验过程中遇到的一系列问题,其中最为突出的问题是热处理工艺、超声波检测和内衬层浅表面裂纹问题。对内衬层浅表面裂纹缺陷问题提出了解决办法。     

基于行业化的石油勘探开发项目监督管理体系研究

为了找出适宜行业发展的监督管理体制,在国内外相关研究成果的基础上,分析了我国石油勘探开发项目监督管理的现状。针对现行的甲方一体化监督存在的问题,提出了由三大石油公司联合,建立石油行业层面的勘探开发项目监督管理体系,对石油勘探开发项目实行全行业统一、规范的标准化监督管理。阐述了构建基于行业化的石油勘探开发项目监督管理体系的主要做法和监督管理机制的运行。     

中国区域金融发展差异的财政因素研究——基于财政压力与地方政府干预视角的分析

本文从各区域财政能力与金融能力变动的对比入手,证实了我国各区域均存在＂强金融,弱财政＂现象。用财政压力指标替换财政能力指标,详细论证了区域财政压力增长率与区域FIR增长率之间存在的反向变动关系。最终说明了区域财政压力差异性造成地方政府干预金融资源市场化配置的激励不同,并最终导致区域金融发展速度差别这样一个连锁反应的存在。     

Does corporate social responsibility influence the corporate performance of the U.S. telecommunications industry?

This study uses a two-stage approach to explore the relationship between the operational performance of U.S. telecommunications companies and their implementation of corporate social responsibility (CSR). In the first stage, this study adopts the dynamic data envelopment analysis model to measure the efficiency of the telecommunications industry in the U.S. from 2004 to 2008. The empirical results show that the corporate efficiency of those companies that implemented CSR was higher than that of those companies that did not. In the second stage, the study adopts OLS and 2SLS to explore the influence of the execution level of CSR on performance. The results show that the Kinder, Lyndenberg, and Domini & Co (KLD) social ratings indexes are significantly and positively related to corporate performance. Finally, this study suggests ways in which corporate policy makers can enhance CSR in order to improve corporate performance in the U.S. telecommunications industry.     

Broadband׳s contribution to economic growth in rural areas: Moving towards a causal relationship

This paper uses recent data on both broadband availability and adoption to empirically gauge the contribution of broadband to the economic growth of rural areas of the United States over the past decade. Availability data from the National Broadband Map aggregated to county level is used in conjunction with county-level adoption data from Federal Communication Commission. Economic variables of interest include median household income, number of firms with paid employees, total employed, percentage in poverty, and the percentage of employees classified as either creative class or non-farm proprietors. A propensity score matching technique (between a “treated” group associated with various broadband thresholds and a control group) is used to make preliminary causal statements regarding broadband and economic health. Growth rates between 2001 and 2010 for different economic measures are tested for statistical differences between the treated and non-treated groups, restricting the analysis to non-metropolitan counties. Results suggest that high levels of broadband adoption in rural areas positively (and potentially causally) impacted income growth between 2001 and 2010, and negatively influenced unemployment growth. Similarly, low levels of broadband adoption in rural areas lead to declines in the number of firms and total employment numbers in the county. Broadband availability measures (as opposed to adoption) demonstrate only limited impacts, suggesting that future broadband policies should be more demand-oriented.