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71.
陈向东 《军队政工理论研究》2009,10(3)
中央军委颁发实施的<党代表任期制实施办法(试行)>,具有很强的思想性、规范性和可操作性,是推进军队党内民主建设的重大举措.要充分认清重大意义,提高贯彻落实<党代表任期制实施办法>的自觉性;准确把握内容实质,增强贯彻落实的针对性;建立健全保障措施,确保贯彻落实的实效性. 相似文献
72.
在武器装备采办中对竞争与单一来源的选择应分析竞争的可行性与合意性。引入竞争必须要满足一些基本的必要条件,只有这样才会使竞争具有可行性。引入竞争还要分析竞争的合意性,即竞争是否值得,而这种合意与否的判断是建立在竞争的成本一收益分析基础之上的。只有同时满足“竞争可行”与“竞争合意”两个条件,武器装备采办才适宜引入竞争,否则应保持单一来源。 相似文献
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日本06式枪榴弹采用新型材料,大幅降低了弹的质量和体积,提高了杀伤效能;采取分离一飞行方式,大大减小了后坐能量,增大了射程;运用弹头捕阱系统,减少了烟尘、碎屑等污染物,保证枪榴弹实弹发射时的安全。其设计思想和战术性能在步兵轻武器领域达到世界领先水平。 相似文献
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In this article, the Building Evacuation Problem with Shared Information (BEPSI) is formulated as a mixed integer linear program, where the objective is to determine the set of routes along which to send evacuees (supply) from multiple locations throughout a building (sources) to the exits (sinks) such that the total time until all evacuees reach the exits is minimized. The formulation explicitly incorporates the constraints of shared information in providing online instructions to evacuees, ensuring that evacuees departing from an intermediate or source location at a mutual point in time receive common instructions. Arc travel time and capacity, as well as supply at the nodes, are permitted to vary with time and capacity is assumed to be recaptured over time. The BEPSI is shown to be NP‐hard. An exact technique based on Benders decomposition is proposed for its solution. Computational results from numerical experiments on a real‐world network representing a four‐story building are given. Results of experiments employing Benders cuts generated in solving a given problem instance as initial cuts in addressing an updated problem instance are also provided. © 2008 Wiley Periodicals, Inc. Naval Research Logistics, 2008 相似文献
77.
In this article, we consider a classic dynamic inventory control problem of a self‐financing retailer who periodically replenishes its stock from a supplier and sells it to the market. The replenishment decisions of the retailer are constrained by cash flow, which is updated periodically following purchasing and sales in each period. Excess demand in each period is lost when insufficient inventory is in stock. The retailer's objective is to maximize its expected terminal wealth at the end of the planning horizon. We characterize the optimal inventory control policy and present a simple algorithm for computing the optimal policies for each period. Conditions are identified under which the optimal control policies are identical across periods. We also present comparative statics results on the optimal control policy. © 2008 Wiley Periodicals, Inc. Naval Research Logistics 2008 相似文献
78.
The use of life-cycle costs in procurement is limited by the accuracy of cost estimates and assessments of availability risks under the conditions generating costs. Critical to these problems are the needs and responses of equipment to maintenance and repair. Using transition probabilities to define the relationships between serviceability and maintenance and repairs, this article develops a comprehensive decision support system for military procurement. It uses a dynamic programming model to determine the least-cost set of maintenance and repair decisions, where adjustments are included for warranty conditions, time value of money, the opportunity costs of equipment failure, and the end-of-cycle salvage values or disposal costs. The system allows users to define working and failed states, create their own rules or indicators of availability from estimates of state probabilities and establish thresholds of risk acceptability. 相似文献
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We consider a finite horizon periodic review, single product inventory system with a fixed setup cost and two stochastic demand classes that differ in their backordering costs. In each period, one must decide whether and how much to order, and how much demand of the lower class should be satisfied. We show that the optimal ordering policy can be characterized as a state dependent (s,S) policy, and the rationing structure is partially obtained based on the subconvexity of the cost function. We then propose a simple heuristic rationing policy, which is easy to implement and close to optimal for intensive numerical examples. We further study the case when the first demand class is deterministic and must be satisfied immediately. We show the optimality of the state dependent (s,S) ordering policy, and obtain additional rationing structural properties. Based on these properties, the optimal ordering and rationing policy for any state can be generated by finding the optimal policy of only a finite set of states, and for each state in this set, the optimal policy is obtained simply by choosing a policy from at most two alternatives. An efficient algorithm is then proposed. © 2010 Wiley Periodicals, Inc. Naval Research Logistics, 2010 相似文献