一种新的活塞式磁通压缩发电机设计方案

介绍了磁通压缩发电机 (MFCG)作为高功率脉冲电源的特性 ,针对国外MFCG方案中遇到的烧蚀问题 ,提出了一种活塞式双螺旋绕组MFCG的新设计方案 ,给出了该方案的设计结构 ,分析了该种方案的原理、工作过程及特点     

消防给水系统检查和检测时应重视的问题

建筑固定消防设施中,室内外消火栓系统、自动喷水灭火系统是扑救火灾的主要设施,提出了在对消防给水系统检查时的要求和容易忽视的问题,探讨了在实际工作中进行消防给水系统的调试及检测的重点及注意事项。     

Specification vagueness and supply quality risk

Specifying quality requirement is integral to any sourcing relationship, but vague and ambiguous specifications can often be observed in practice, especially when a buyer is in the initial stage of sourcing a new product. In this research, we study a supplier's production incentives under vague or exact quality specifications. We prove that a vague specification may in fact motivate the supplier to increase its quantity provision, resulting in a higher delivery quality. Vague quality specification can therefore be advantageous for a buyer to screen potential suppliers with an initial test order, and then rely on the received quality level to set more concrete quality guidelines. There is a degree, though, to which vague quality specification can be effective, as too much vagueness may decrease the supplier's quantity provision and hence the expected delivery quality. © 2013 Wiley Periodicals, Inc. Naval Research Logistics, 2013     

Rolling‐horizon replenishment: Policies and performance analysis

We consider a rolling‐horizon (RH) replenishment modeling framework under which a buyer can update demand information and inventory status, modify order quantities committed previously, place an advanced order for a new period at the end of the RH, and move along in time seamlessly. We show that the optimal order policy for the two‐period RH problem is a dual‐threshold type for updating period(s) plus a base‐stock type for the advanced order. We provide analytical formulas and algorithms to compute the optimal thresholds and the optimal base‐stock level exactly. With our analytical results and numerical procedures, we demonstrate the significant value of RH replenishment in matching supplies to demands more closely. We also show that with RH updating (flexibility), the value of additional demand information beyond the RH diminishes quickly. © 2010 Wiley Periodicals, Inc. Naval Research Logistics, 2010     

高层建筑灭火救援供水方式实际应用分析

高层建筑火场供水问题是灭火救援能否取得成功的关键,对其供水方式进行研究具有重要意义和紧迫性.按“固、内、外”三个类别,从固定设施、移动装备、现场环境和人员等方面,就现有高层建筑常用供水方式的优缺点进行论述,并结合供水方式的优缺点,就供水车数量确定、水带铺设方式、移动供水装备选用、熟悉演练等方面提出建议,以期提高高层建筑供水水平.     

我国消防服务供给方式的经济学思考

消防服务在我国社会生活中已越来越凸显其重要地位。依据公共物品理论,在分析消防服务的经济学特性及供给困境的基础上,提出了一些在我国经济转型条件下有效提供消防服务的思路。     

无源电流放大器的实现及应用

利用对偶原则,将带阻型ＲＣ双Ｔ桥滤波器变换成带通型ＲＣ双Ｔ桥滤波器,其等效电路的部分支路呈现负阻抗特性．利用这种特性实现了无源电流放大．最后给出了两个应用电路     

规范外训教学 提高培训质量

根据多年外训教学实践的体会,探讨了外训教学当前存在的主要问题,提出了改进意见,并对外训教学的规范化问题提出了自己的看法。     

在军援装备物资科研订购中引入激励机制探析

军援装备物资的订购筹措是军事援助中较为重要的一项工作.在军援装备科研订购过程中充分利用经济杠杆的调节和行政手段的调控,通过招标竞争、利益诱导、资金保障、实施奖惩等方面的具体措施,通过履行合同、择优订货等环节的激励,最大限度地调动和发挥各方面的积极性,逐步建立适应军援装备发展需要和社会主义市场经济的新型军援装备科研订购体制.     

气溶胶灭火装置在工业供电系统中的应用

分析工业供电系统的火灾特点和原因 ,结合部分工程实例和气溶胶灭火装置的特性 ,提出该类产品在工业供电系统应用中的优势和施工中的注意事项 ,并展望其应用前景