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71.
In any business process reengineering (BPR) project, a thorough understanding of various tasks and activities of the organization is required. Very often this idea is captured using a simple flow chart or static representation diagram. The weakness here is that the process design complexity is not adequately represented by the use of flow charts, and this allows for limited human-computer interaction during the process design and analysis. In this paper, we propose an enhanced flow chart approach; the concept of activity-section flow chart to support BPR, which is a combination of the existing activity flow chart and section flow chart. Using this approach, a human-computer interactive model for BPR is developed. This model can identify the unreasonable activity loops and excessive business rounds between sections by the adjacent and reachable matrices. Via the human-computer interaction, the process can be revised by human experience. This approach provides an efficient tool for BPR of large-scale systems. It has been applied to the material supply management system of an iron and steel works, and satisfactory results have been achieved. 相似文献
72.
测量矩阵是决定计算关联成像图像重构质量和成像速度的重要因素之一。本文提出一种新的测量矩阵优化构造方法,利用伪随机序列生成Gold矩阵,该矩阵同时具有Random矩阵的随机性和Hadamard矩阵的确定性。数值模拟和实验结果表明:在满采样条件下,Gold矩阵和Hadamard矩阵均能够实现完美的重构图像;在欠采样条件下,Gold矩阵重构图像质量明显优于Random矩阵和Hadamard矩阵。 相似文献
73.
《诗经》的使动用法 总被引:2,自引:0,他引:2
方文一 《浙江师范大学学报(社会科学版)》2001,26(1):34-37
本文从《诗经》“使令”意义的表达法、《诗经》的使动用法及其特点三个方面进行阐述,说明“使动”用法在较早的史料中已经相当多,并非“甚为罕见”. 相似文献
74.
This paper considers a single server queueing system with working breakdowns and delaying repair under a Bernoulli-schedule-controlled policy. At a breakdown instant, the system either goes to repair period immediately with probability p, or continues to provide auxiliary service for the current customers with probability q = 1 ? p. While the system resides in the auxiliary service period, it may go to repair period if there is no customer at the epoch of service completion or the occurrence of breakdown. By using the matrix analytic method and the spectral expansion method, we respectively obtain the steady state distribution to make the straightforward computation of performance measures and the Laplace-Stieltjes transform of the stationary sojourn time of an arbitrary customer. In addition, some numerical examples are presented to show the impact of parameters on the performance measures. 相似文献
75.
Masayuki Matsui 《生产规划与管理》2013,24(8):688-701
A single-stage lot/cell production under a Poisson arrival and exponential service in a batch is considered. The three economic queuing models of push and pull types are presented, an economic comparison of push versus pull types is considered, and a strategic management/design consideration to the lot production is given. First, the total expected operating cost is given for the three queuing models including the Omote-Kanban type similar to VMI. Second, the push versus pull system is discussed from a view of setup time, inventory or operating cost, and it is ascertained that the three types are alternative. Finally, a strategic management basis for economic traffic, leadtime setting is given, and discussed by the introduction of production matrix on 2-stage design. 相似文献
76.
王尊全 《三峡大学学报(人文社会科学版)》1999,(2)
n阶矩阵A的中心化子C(A) ={B∈Pn×n|AB =BA} ,P[A] ={f(A)∈Pn×n|f(x)∈P[x] } 本文给出了C(A) =P[A] ,即A的中心化子可表成A的矩阵多项式的充要条件 相似文献
77.
78.
本文应用线性代数的有关理论,提出了一个解线性不等式组的简便方法,并给出了一个判断不等式系统无解的充要条件。数值例子显示出所述方法的有效性。 相似文献
79.
对T-Matrix方法的极限问题进行了系统的分析:当散射体的边界趋于理想边界时,对于E波入射情形,完成了T-Matrix方法到经典解析解的极限过渡。 相似文献
80.
人民币升值对我国对外贸易的影响分析 总被引:5,自引:0,他引:5
张颖 《合肥学院学报(社会科学版)》2007,24(6):127-130
通过对人民币升值压力形成原因和性质逐一分析,认为人民币升值有其内在的必然性。进一步分析人民币升值对我国外贸的影响,得出结论:人民币升值有利于我国外贸的发展。 相似文献