1000MW机组塔式锅炉水冷壁垂直段组合安装方案浅析

本文以某电厂1000MW机组塔式锅炉水冷壁垂直段组合、安装为例,介绍塔式锅炉水冷壁垂直段组合、安装方案的确定过程,以其成功安装经验,对于同类型锅炉水冷壁安装具有一定借鉴意义。     

岩溶地质钻孔桩二次成孔护壁法施工技术

通过对大湖下行联络线岩溶地质钻孔桩施工出现问题的论述,结合岩溶地质钻孔桩常用的处理方法,提出了适应本区域岩溶地质环境的二次成孔护壁法在钻孔桩施工中的应用,并得到了成功的验证。     

双轮铣槽机在深圳地铁地下连续墙施工中的应用

本文通过双轮铣在深圳地铁福邻站地下连续墙施工中的应用,阐述了其设备的施工原理、施工工艺、施工工效以及其主要的技术要点,并在此基础上初步探讨了液压双轮铣在深圳地铁施工的可行性和延续性。     

框架填充墙裂缝原因分析及预防

文章分析了加气块填充墙裂缝的开裂成因,并提出了相应的预防措施。     

Investigating first‐stage exchange rate pass‐through: Sectoral and macro evidence from euro area countries

In this paper, we evaluate the first‐stage pass‐through, namely the responsiveness of import prices to the exchange rate changes, for a sample of euro area (EA) countries. Our study aimed to shed further light on the role of microeconomic factors versus macroeconomic factors in influencing the extent of the exchange rate pass‐through (ERPT). As a first step, we conduct a sectoral analysis using disaggregated import prices data. We find a much higher degree of pass‐through for more homogeneous goods and commodities, such as oil and raw materials, than for highly differentiated manufactured products, such as machinery and transport equipment. Our results confirm that cross‐country differences in pass‐through rates may be due to divergences in the product composition of imports. The higher share of imports from sectors with lower degrees of pass‐through, the lower ERPT for an economy will be. In a next step, we investigate for the impact of some macroeconomics factors or common events experienced by EA members on the extent of pass‐through. Using the system generalised method of moments within a dynamic panel‐data model, our estimates indicate that decline of import‐price sensitivity to the exchange rate is not significant since the introduction of the single currency. Our findings suggest instead that the weakness of the euro during the first 3 years of the monetary union significantly raised the extent of the ERPT. This outcome could explain why the sensitivity of import prices has not fallen since 1999. We also point out a significant role played by the inflation in the Eurozone, as the responsiveness of import prices to exchange rate fluctuations tends to decline in a low and more stable inflation environment. Overall, our findings support the view that the extent of pass‐through is comprised of both macro‐ and microeconomic aspects that policymakers should take into account.     

塔式起重机的扶墙与地梁设计探讨

本文分析了目前塔式起重机地梁设计与选用,扶墙设计与选用。根据塔式起重机设计原理,基础的连接进行了分析,使用结构力学知识指出了产生不同结果,最后通过验证了该设计的安全性。     

农业产业扶贫应解决好的几个问题

产业扶贫是脱贫攻坚的重头戏。农业是贫困地区的基础产业和民生产业,是贫困人口生活和收入的重要来源。文章分析了当前农业产业扶贫中存在的困难和问题,提出要树立精准理念、选准特色产业、培育新型主体、完善利益机制、编制科学规划、加大投入力度、强化保险支持,确保贫困人口通过产业发展精准受益,如期实现脱贫。     

基于社区参与的鄂西旅游扶贫开发模式研究——以湖北省襄樊市襄阳区为例

旅游扶贫强调社区贫困人口受益,以襄樊市襄阳区为例,提出社区参与旅游扶贫开发的模式,包括景区带动模式、农家乐接待、红色旅游、生态农业旅游、库区旅游开发、名人文化旅游、旅游名村建设等7种模式。为保障旅游扶贫的实施目的,在实践中应发挥政府主导,保障社区居民参与的主体地位;建立合理的利益分配机制;加大培训,建立高层次社区参与机制,并跟踪旅游扶贫,建立旅游扶贫的长效反馈机制等措施。     

长尾市场网络销售商的订单履行渠道选择模型

研究传统市场和长尾市场条件下,网络零售商保有库存策略和直运策略的选择模型。建立了单周期动态仿真模型,进行了算例仿真,测算了市场竞争、供应商折扣、零售商订购策略和消费者对网络销售方式的接受程度等影响因素对网络零售商总利润的影响。结果表明,在缺乏定价权的实际条件下,网络零售商要获得更高的销售利润,需要增加产品品类、争取更大的价格折扣、采购合适数量的产品、选择合适的订单履行渠道。在未来的长尾市场中,产品品类更多、竞争更激烈、消费者选择产品的视野更开阔,直运方式将代替保有库存方式成为许多网络零售商的主流订单履行方式。     

河北省鲜活农产品物流配送模式及运行机制探讨

在分析河北省鲜活农产品配送现状的基础上,以供应链管理为背景,提出了"以生产基地为主体,第三方物流为辅"的鲜活农产品直配模式,同时探讨了该机制运行过程中应该注意的关键问题。