辽河流域辽宁段旅游开发探讨

当今,旅游业作为发展最快的新兴产业之一,被誉为"朝阳产业"。辽河具有独特的自然地理位置和气候特征,生物资源丰富,拥有丰富的湿地资源,非常适合进行旅游开发。通过对辽河流域辽宁段区位、旅游资源状况分析的基础上,结合辽河流域旅游开发现状及存在问题,有针对性的提出了旅游资源开发的相应对策,为当地旅游业的发展提供理论依据,也为同类旅游业地区的发展提供经验。     

Bad beta good beta,state‐space news decomposition and the cross‐section of stock returns

This study employs an innovative market‐based approach, where return on equity (ROE) is employed as a proxy for cash‐flow news and a state‐space model is used for market news decomposition. We document that the bad beta good beta (BBGB) model of Campbell and Vuolteenaho (2004) explains about 30 per cent of the cross‐sectional variations in US stock returns. We also find that the BBGB model adequately explains the size effect leading to its superior performance in this area. Our method controls for the news decomposition method and market news proxies’ bias. We contribute to the literature by providing an alternative easy‐to‐implement and consistent market‐based method for news decomposition.     

濮城油田南区沙二上2+3厚层剩余油饱和度研究及认识

本文通过对濮城南区沙二上2+3油藏进行剩余油分布规律的研究,详细描述了特高含水后期油藏厚油层的剩余油分布特征,通过钻井岩心、测井等资料的精细研究,建立高分辨率层序地层对比格架,利用隔夹层识别技术对厚层进行了细分,分析水井吸水剖面细分及剩余油监测资料,研究了厚油层层内分段含油饱和度分布规律,对剩余油潜力进行再认识。应用选择性补孔提液与精细注水相结合的配套技术挖潜层内弱水淹区剩余油,改善多油层非均质油藏后期开发效果。     

地震带隧道千枚岩大变形地段隧道施工分析

在隧道工程施工中,必须认真研究施工质量和施工技术之间的关系。以保障施工质量和安全为前提,选择合适的施工方法。本文以实际工程为例,对地震带隧道千枚岩大变形地段隧道施工进行分析。     

基于主要国家截面数据的虚拟水进口影响因素实证分析

基于39个主要国家的截面数据,选取反映资源、经济、制度、人口四个因素的11个变量,采用逐步回归分析方法对影响虚拟水进口量的因素进行实证分析。回归结果表明,国际储备、人均国内生产总值、耕地面积、粮食单产4个变量对虚拟水进口量具有显著影响且均具有正向效应。     

某微型面包车滑移门运动系统的布置

文章对微型面包车运动系统的建立过程进行了分析,分析内容包括走轮臂结构的设计、截面的设计、导轨的布置、CAE分析验证等,经过系统地分析和总结,提高了设计效率,缩短了汽车的开发周期.     

RTK配合全站仪在潮白河断面测量中的应用

本文介绍了RTK技术结合全站仪在北京潮白河断面测量中的应用。结合测区实际情况探讨了如何优化组合以达到准确、快速和高效的完成断面测量任务。     

浅谈道路桥梁结构病害与加固

文章叙述了桥梁病害的成因、桥梁加固的流程以及几种加固增强技术,即裂缝修补技术和加固增强技术。     

公路路桥过渡段不均匀沉降的原因与控制措施

文章分析了路桥过渡段产生不均匀沉降的主要原因,路桥过渡段的结构设计措施及施工控制进行了探讨。     

CEO/CFO turnover and subsequent remediation of information technology material weaknesses

Adding to prior research on internal control material weaknesses (ICMW), our study investigates whether information technology material weaknesses (ITMWs) are associated with CEO/CFO turnover, and whether their turnover will promote subsequent remediation. We find that disclosures of ITMW are positively associated with CEO/CFO turnover; however, only CEO turnover promotes subsequent remediation. Our findings on ITMW are different from the prior findings on ICMW – aligned with prior research on ICMW, ITMWs are associated with CEO/CFO turnover; however, unlike prior research on ICMW suggests, dismissals of CFOs do not promote subsequent remediation of ITMW. Thus, future research should consider ICMW and ITMW separately in the examination of their consequences and remediation.