基于堆垛机S型曲线运动模型的matlab仿真分析

利用matlab仿真软件对堆垛机的三种S型曲线模型进行分析。在仿真的过程中，引进了跃度的概念，利用做功的基本公式推导出电机的输出瞬时功率。最后通过比较三种控制方法，认为变跃度的方式不仅可以解决曲线平滑的问题，还可以降低选型电机的功率大小。     

模块式小型反应堆研发现状及前景分析

目前的核电站大多数为装机容量较大的反应堆,有些甚至达到了175万千瓦的单机容量,大型堆核电站一次性投入成本高、建造周期长,且难以适应小型电网的需求,而小型反应堆恰好可以解决这一问题,全球掀起了模块式小型核电机组的开发热潮。文章主要介绍了模块式小型反应堆的研发现状、用途,并分析了小型堆与常规堆的优劣势及其发展前景。     

热泵技术应用与电力市场开拓

文章从热泵技术原理、分类以及山西地区热泵应用自然条件和现状出发,选取应用案例对热泵和城市集中供暖的经济性进行比较,说明其在节能减排、经济性方面的优势,指出供电公司在热泵推广应用中可做的工作。     

地方人大重大事项决定权工作机制探索

党的十八大对坚持和完善人民代表大会制度提出了新的更高要求,十八届三中全会作出的《中共中央关于全面深化改革若干重大问题的决定》,特别明确了人大重大事项决定权。鉴于目前地方人大及其常委会的决定权基本虚置的状况,本文探讨了地方人大重大事项决定权的涵义及工作机制,以期健全人大讨论、决定重大事项制度,推进人民代表大会制度理论和实践创新。     

电力企业同业对标管理的研究

同业对标是现代企业管理的重要手段,它要求公司各级要提高认识,加强同业对标工作的组织及领导,加强组织协调,加大工作力度,发挥专业部门的主导作用,强化管理改进,促进指标的优化提升。     

民营资本的进入对我国风电产业发展的影响——基于断点回归的分析

为克服单差法存在变量内生性，倍差法对于控制组的严格要求往往无法得到满足，故文中采用断点回归的分析方法，在无对照组的情形下，对我国风电产业2012~2015年的资产总计、主营业务收入以及发明专利数月度数据进行实证研究，探究民营资本的进入对我国风电产业的影响。实证结果表明，从短期看，民营资本的进入对我国风电产业规模与技术效率具有统计上的显著正面作用，具有一定的经济意义；另外，这一机制的推行对产业创新产生了显著的负面作用。     

Price and Volatility Transmission and Market Power in the German Fresh Pork Supply Chain

We investigate the relationship between the transmission of price volatility and market power in the German fresh pork supply chain. We use a theoretical model underpinning this relationship followed by an empirical application that uses monthly farm, slaughterhouse and retail pork price data for the period 2000–2011. We examine both the relationships of market power with price level transmission and price volatility transmission in the chain. We use a vector error correction model and least squares regressions to analyse price transmission and price volatility transmissions, respectively. Results show that retail market power limited both types of transmissions. Competition inducing policy measures coupled with measures that support price risk management initiatives of chain actors are suggested.     

A new assessment of economic integration in East Asia: Application of an industry-specific G-PPP model

It is well known that intra-industry trade and cross-border production networks have promoted economic growth and regional integration in East Asia. However, regional supply and production chains may have been formed differently across industries, reflecting different degrees and a different scope of regional economic linkages at an industry level. This paper makes a threefold contribution. First, to assess industry-level differences, this study adopts the generalized purchasing power parity (G-PPP) model using industry-specific producer prices. Second, the momentum threshold autoregressive (M-TAR) model is employed to allow for possible nonlinearity arising from the dynamic nature of regional economic growth and development. Third, the Granger causality test is also conducted to assess whether regional economies have autonomously integrated. The empirical results reveal that economic integration has progressed more autonomously in the electrical industry, as well as in the transportation equipment industry, as China and the ASEAN countries have become the final destination markets for finished products in these two industries.     

华北油田冀中电网输配电线路存在的主要问题及应对措施

本文论述了华北油田冀中电网输电线路存在的老化、线路下方违章建筑物、树木顶线、杆塔缺土、施工车辆、挖掘机、吊车误碰导线跳闸等情况,并提出了应对措施。     

72205综采工作面3300V高压供电技术改造

随着工作面功率的加大,矿井电压过低造成设备启动困难或不启动现象,甚至造成欠电压跳闸,因此1140V电压等级升高到3300V将是煤矿发展的前进方向。