石油套管漏磁检测标准影响因素研究

简要介绍石油套管缺陷形式及缺陷检测方法,着重阐述石油套管漏磁检测的原理及石油套管漏磁检测标准,分析自动漏磁检测设备影响因素及应对措施,展望石油套管漏磁检测的应用前景。     

河南天冠燃料乙醇有限公司日处理1400 t玉米提胚车间设计

玉米经破渣后,经过初步分级将含胚玉米渣分离出来,经提胚、压胚、筛选等工序,将玉米胚芽提取出来,玉米胚芽再经精选可以得到较为纯净的胚芽,用于榨油或者其他用途.     

辽宁地区电机无功补偿节能技术应用

为更好地提高企业用电运行的工作效率,通过安装新型低压无功补偿控制器,可有效解决粮库集中及分组补偿风机等设备使用寿命短、补偿精度低等短板.试验结果表明：使用该节电器风机的综合节电率可提高15％,电机功率因数大幅提高,基本实现准量补偿,企业用电效率大幅提升.     

银行体制市场化、营运资本与企业绩效

在一个自然实验的框架下,本文考察了银行体制市场化以后,企业营运资本使用变化对企业绩效的影响。本文发现,银行体制市场化使得银行部门信贷资源配置具有市场化特征,对所有企业的外源融资都进行约束。受到外源融资约束的企业会更多使用企业的内部资金进行经营和生产活动,一方面,企业会更多使用营运资本提高企业的生产和财务绩效,而另一方面,企业会减少营运资本来维持生产规模的扩张。这些结果表明,银行体制市场化能够有效提高企业内部资金使用效率,在当前工业部门普遍面临融资难的困境下,对进一步探讨银行体制改革和提高企业绩效有重要意义。     

大数据征信前沿研究综述与展望

在梳理大数据征信的前沿文献、研究基础、法律规制、算法框架等基础上,分析大数据技术在个人征信和小微企业征信中的应用研究.重点探讨大数据技术在个人征信信息保护、征信赋能金融服务模式创新、小微企业信用评级等大数据征信研究的热点难点问题,并从完善法律法规、健全标准体系、推进技术融合、加强社会信用体系建设等方面提出完善大数据征信...     

Public infrastructure provision and skilled–unskilled wage inequality in developing countries

In this paper, we develop several static three-sector general equilibrium models with diverse labor market structures to investigate the effects of government provision of public infrastructure on the skilled–unskilled wage inequality in developing countries. The basic full employment model shows that the production sectors' relative dependence on the public infrastructure provision plays a crucial role in determining the skilled–unskilled wage inequality. Different relative dependences on public infrastructure may even result in opposite changes in the skilled–unskilled wage inequality. The above results are robust even when we extend the basic full employment model to three fundamentally different cases.     

连续图像数字半调处理及性能分析

本文阐述了连续图像数字半调处理的基本理论，包括有序抖动数字半调处理、误差扩散数字半调处理，并对2种处理进行了性能分析。     

浅谈工程造价咨询单位在控制工程造价中的作用

工程造价咨询单位应在工程项目建设的各个阶段充分发挥其作用,这对于节约投资,服务于经济建设具有重要意义。从四个方面论述工程造价咨询单位在工程项目建设各阶段的作用。     

巴西油气领域发展环境浅析

巴西油气资源丰富,经济增长平稳,政治局势稳定,但油气政策相对保守,而且税费高、金融风险大,政府行政效率较低。总体看,巴西在世界主要油气生产国中属于投资风险最低的国家,而且深水开发技术居世界前列。近年来,巴西政府提出了庞大的上游投资计划,希望引入私人资本和外部资本,通过深海油气勘探开发带动本国经济发展。同时,作为金砖国家,中巴两国政府加强战略合作,推动中巴合作特别是油气合作持续升温。建议未来通过多层次合作规避政治和技术风险,采取多元化和属地化策略降低经济风险,并不断加强高层沟通和协调,高度重视企业在当地发展的社会责任,从经济效益和社会效益两方面真正实现两国在油气领域的互利共赢。     

Changes in the value relevance of accounting information over time: Evidence from the emerging market of China

We investigate the changes in the value relevance of accounting information among Chinese firms over the past two decades, during which accounting reforms are launched to provide decision makers with increased disclosure and higher quality financial information. We also investigate the factors that differentiate firms showing significant value relevance improvement from firms showing little improvement. We find increases in the value relevance of some financial variables and decreases in others, which suggests that accounting numbers help to explain the pricing process of stock shares although at different levels. In addition, we find that value relevance improvements are more pronounced for smaller firms, firms with lower growth rates, and those with greater asset tangibility. We also document that value relevance improvements are generally lower in an exuberant stock market. These results have implications for a variety of information users and policy makers in emerging countries which are reforming their accounting systems.