VE在高速公路边坡绿化中的优化应用研究

基于价值工程的分析方法,对高速公路边坡的绿化功能进行了系统分析,并结合成本对功能成本进行了比较,在此基础上,对不同的绿化方案进行了设计比较,并选择实施。梅河高速公路的绿化实施效果表明,这种优化效果很好。     

铁路桥连续刚构边跨现浇段的吊架设计及受力检算

采用挂篮施工的连续刚构边跨现浇段的支架形式多种多样,其设计目的是施工简便、安全牢固、确保质量及节约成本。在遂渝二线铁路薛家坝涪江左线特大桥连续刚构梁边跨现浇段施工时采用型钢吊架支撑,吊架分别利用原施工悬浇节段的挂篮及在墩顶预埋工字钢作支承点。吊架施工现浇段不仅结构简单、施工方便,而且在安全、质量及效益方面均取得了很好的效果。文章对型钢吊架的设计、施工方法进行了详细介绍,并对吊架进行了受力分析及验算,验证了方案的可行性,为以后同类桥型的施工提供参考。     

低碳经济下电网企业的管理对策研究

本文从低碳经济的本质出发,分析了低碳经济对电网企业的挑战,并结合电网企业的实际情况提出了一系列的对策和建议,希望能够为电网企业低碳经济的建设提供参考。     

220kV变电站主变低压35kV侧加装限流电抗器的可行性研究

由于电力系统容量的扩大,系统的短路电流随之增大,主变低压侧抗短路能力嗜待增强。通过在主变低压侧加装限流电抗器来限制短路电流是可行的方法之一。如何消除由于增加限流电抗器给系统产生的负面影响无疑成为我们面临的非常重要的问题。本文就能否采用限流电抗器来解决系统容量增大导致河北南部电网220kV变电站主变低压侧短路电流过大这一问题进行了一些有益的探讨。     

山区输电线路塔位边坡治理方法及技术经济分析

针对目前山区输电线路铁塔塔位边坡的特点，总结输电线路工程中常见的塔位边坡主要处理措施，包括工程治理、生物治理，对相应方法的适用范围和优缺点进行了比较分析，提出了合理的环保设计建议。     

贵州高速公路边坡加固防护形式初探

根据边坡类型和出现问题的大小,边坡加固措施也是多种多样,不同的加固措施,所应用的材料也有所不同。边坡加固就是通过对影响边坡稳定的主要因素进行控制,从而达到确保边坡稳定的目的,防护工程和地表排水是边坡加固技术中应用最为广泛的工程。     

公路边坡地质的分类问题探讨

对于公路边坡分类,大多是按分类原则就边坡的破坏形式进行分类,对于未变形边坡则很少进行分类。本文在总结公路工程边坡勘察成果的基础上,提出了适合公路工程的边坡工程地质分类,并将未变形边坡统分为岩质边坡、土质边坡和土石边坡,对岩质边坡按边坡体岩性和结构进行了细致分类,而对变形边坡则按其变形特征进行简要分类。     

供给侧改革中资源与能源行业去产能政策效果研究

中国经济历经复苏和快速增长阶段后,部分产业出现产能过剩现象,产业结构的不均衡变化导致了GDP增速放缓。2016年初中国政府提出供给侧结构性改革,旨在通过“三去一降一补”政策调整产业结构,刺激经济发展。本文构建了一个包含资源与能源产业的一般均衡模型,量化分析中国供给侧结构性改革的政策效果。研究表明,在去产能政策削减上游资源产业的产出后,政策冲击会传导至下游能源产业,导致化石能源相对于绿色能源产量下降14.04%,能源结构实现优化。随后的政策对比实验引入了新能源补贴、碳排放税征收及资源税收缴等财政手段,与去产能政策进行效果对比。实验结果显示,3种政策在不同程度上实现了能源结构调整,其中征收碳税的政策使化石能源占比降幅最大,但同时会使资本利率上升,加重企业融资成本;新能源补贴与资源税的政策也可以实现调控目标,但与去产能政策相比效果更弱。     

Supply‐ versus Demand‐Side Policies in the Presence of Carbon Leakage and the Green Paradox

We consider a climate coalition that seeks to reduce global emissions in the presence of carbon leakage and resource exhaustibility. We show that a credible announcement of future unilateral supply‐side policies delays foreign emissions, and we derive the optimal combination of consumer taxes and producer taxes when we consider leakages from free riders, both within periods and across periods. The tax shares generally differ over time. A decline in the present value of the social cost of carbon over time supports a time path where the consumers’ tax share of the total carbon tax also declines over time. We illustrate our findings with a numerical model.     

Betrayal in buyer–seller relationships: Exploring its causes,symptoms, forms,effects, and therapies

Building on literature in social psychology that discussed betrayal in interpersonal relationships, this article explored betrayal in buyer–seller relationships using data collected from a survey conducted among 109 buyers and 115 sellers in the United States. The results indicated that betrayal was a complex, multifarious, and dynamic phenomenon, consisting of a sequence of phases, namely causes, symptoms, forms, consequences, and therapies, with multiple issues being involved at each phase. Our study also revealed that the views of buyers differed from those of sellers in terms of how various relational characteristics contributed to the emergence of betrayal episodes, what behavior and attitudes helped to diagnose partner betrayal, in which forms the betrayal acts were manifested, how the victims of betrayal felt, and how betrayal problems could be handled in a working relationship. In fact, the various dimensions in each of the betrayal phases examined were consistently more frequently mentioned by buyers than sellers.