关于公安机关人民警察培训师资的思考

教师是决定培训质量高低与培训效果好坏的关键性因素。加强培训师资队伍建设,是公安机关人民警察培训工作的重中之重。要充分认识传统教师与培训教师的区别,明确公安机关人民警察培训师资队伍建设途径与方法。     

基于可拓方法的炮兵作战指挥训练手段运用效果评价

为评价炮兵作战指挥训练手段运用效果,在分析影响炮兵作战指挥训练手段运用效果因素的基础上,应用可拓方法建立了炮兵作战指挥训练手段运用效果多指标参数的物元可拓评估模型,以定量评估结果对炮兵作战指挥训练手段运用效果进行了评价分级,并与层次分析法和模糊综合评判法的评估结果进行了比较,结论基本一致。其评估结果可为发展信息化炮兵作战指挥训练手段提供依据。     

Scheduling multiple products on parallel machines with setup costs

We consider a class of production scheduling models with m identical machines in parallel and k different product types. It takes a time p_i to produce one unit of product type i on any one of the machines. There is a demand stream for product type i consisting of n_i units with each unit having a given due date. Before a machine starts with the production of a batch of products of type i a setup cost c is incurred. We consider several different objective functions. Each one of the objective functions has three components, namely a total setup cost, a total earliness cost, and a total tardiness cost. In our class of problems we find a relatively large number of problems that can be solved either in polynomial time or in pseudo‐polynomial time. The polynomiality or pseudo‐polynomiality is achieved under certain special conditions that may be of practical interest; for example, a regularity pattern in the string of due dates combined with earliness and tardiness costs that are similar for different types of products. The class of models we consider includes as special cases discrete counterparts of a number of inventory models that have been considered in the literature before, e.g., Wagner and Whitin (Manage Sci 5 (1958), 89–96) and Zangwill (Oper Res 14 (1966), 486–507; Manage Sci 15 (1969), 506–527). © 2008 Wiley Periodicals, Inc. Naval Research Logistics, 2008     

Flow‐shop batch scheduling with identical processing‐time jobs

In many practical situations of production scheduling, it is either necessary or recommended to group a large number of jobs into a relatively small number of batches. A decision needs to be made regarding both the batching (i.e., determining the number and the size of the batches) and the sequencing (of batches and of jobs within batches). A setup cost is incurred whenever a batch begins processing on a given machine. This paper focuses on batch scheduling of identical processing‐time jobs, and machine‐ and sequence‐independent setup times on an m‐machine flow‐shop. The objective is to find an allocation to batches and their schedule in order to minimize flow‐time. We introduce a surprising and nonintuitive solution for the problem. © 2004 Wiley Periodicals, Inc. Naval Research Logistics, 2004     

Parallel machine scheduling with batch deliveries to minimize total flow time and delivery cost

Motivated by the flow of products in the iron and steel industry, we study an identical and parallel machine scheduling problem with batch deliveries, where jobs finished on the parallel machines are delivered to customers in batches. Each delivery batch has a capacity and incurs a cost. The objective is to find a coordinated production and delivery schedule that minimizes the total flow time of jobs plus the total delivery cost. This problem is an extension of the problem considered by Hall and Potts, Ann Oper Res 135 (2005) 41–64, who studied a two‐machine problem with an unbounded number of transporters and unbounded delivery capacity. We first provide a dynamic programming algorithm to solve a special case with a given job assignment to the machines. A heuristic algorithm is then presented for the general problem, and its worst‐case performance ratio is analyzed. The computational results show that the heuristic algorithm can generate near‐optimal solutions. Finally, we offer a fully polynomial‐time approximation scheme for a fixed number of machines. © 2016 Wiley Periodicals, Inc. Naval Research Logistics 63: 492–502, 2016     

石油库站油料筹措中的灰色存储论综合模型及应用

将灰色系统理论、存储论、数理统计理论综合运用,建立综合数学模型,并将该模型运用于石油库站油料管理中,以提高库站油料管理者的决策水平。建立的多阶段油料订购模型可制定最佳油料订购方案,该模型具有通用性,具有简洁、实用、拟合精度高等特点。     

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。     

提高政治经济学教学效果的实践与思考

公安类院校的马克思主义基本原理概论课程,有关政治经济学部分的教学普遍存在一些问题,主要是学生不重视、不感兴趣;理论本身较为抽象,难于理解;传统理论与时代性内容的矛盾与争议较多等。针对这三方面的问题,从教学方法上提出解决办法,即用快乐教学提高重视程度和兴趣,利用三种有效方法改善理论的抽象性,同时还要注意用不同方式对待矛盾与争议。     

炮兵作战指挥训练手段与训练质量相关性分析

为了探索炮兵作战指挥训练手段与训练质量之间的关系,在向有关专家咨询的基础上,运用模糊数学方法对现有炮兵作战指挥训练手段进行模糊综合评价及模糊聚类分析。从分析中可以得到不同训练手段对训练质量各因素影响程度不同;利用组合数学模型对炮兵作战指挥训练手段的优化组合,提供了数据支持,实现优劣互补;通过建立模糊相关矩阵,为炮兵作战指挥训练手段比例分配提供依据。     

一种新的批处理常模算法

详细分析了传统批处理常模算法的缺点,提出了一种新的批处理常数模算法——基于共轭梯度方向的批处理常模算法(CG-BPCMA).仿真结果表明,与最陡下降批处理常模算法(SD-BPCMA)和牛顿方向批处理常模算法(NT-BPCMA)相比,提出的新算法有效地克服了SD-BPCMA和NT-BPCMA的缺点,不仅获得了较低的算法复杂度,而且能快速收敛到常模代价函数的最小值点.