控制图在质量管理中的应用

质量管理(quality management)SIO8402曾提出明确定义,即:确定质量方针、目标和职责并在质量体系中通过诸如质量策划、质量控制、质量保证和质量改进使其实施的全部管理职能的所有活动。质量管理概念大体上经历了传统质量管理阶段。

An uplink power control algorithm using traditional iterative model for cognitive radio networks

Based on the analysis of the feature of cognitive radio networks, a relevant interference model was built. Cognitive users should consider especially the problem of interference with licensed users and satisfy the signal-to-interference noise ratio （SINR） requirement at the same time. According to different power thresholds, an approach was given to solve the problem of coexistence between licensed user and cognitive user in cognitive system. Then, an uplink distributed power control algorithm based on traditional iterative model was proposed. Convergence analysis of the algorithm in case of feasible systems was provided. Simulations show that this method can provide substantial power savings as compared with the power balancing algorithm while reducing the achieved SINR only slightly, since 6% S1NR loss can bring 23% power gain. Through further simulations, it can be concluded that the proposed solution has better effect as the noise power or system load increases.

基于过程控制的公共政策评估理论与方法探索

本文梳理了国内外公共政策评估的相关理论,在遵循评估基本准则的基础上,界定了公共政策过程控制的上控制线、下控制线及中心线等概念。在相关理论假设的基础上,引入了过程控制的思想,提出了在保证政策总目标实现的条件下允许公共政策实施过程在一定范围内的区间波动理论,以增强公共政策的协调性和适应性;提出了统筹公共政策事前、事中、事后等各阶段评估的理论,以增强公共政策评估过程的反馈机制和即时回应机制;提出了公共政策过程控制的思路和方法,以实现公共政策阶段目标调整和总目标协调一致;最后通过案例说明了我国公共政策过程评估的路径选择。笔者期待基于过程控制的公共政策评估的思路与方法,能够降低政策过程中的试错成本,为新时期我国出台公共政策提供理论参考。