Designing and Selection of Mixed Sampling Plan with Chain Sampling as Attribute Plan

This paper deals with the operating procedure of mixed acceptance sampling plans with chain sampling as attribute plan. The operating characteristics function and other associated measures of the plan are provided. The plan is designed through AQL and IQL. Tables are constructed for easy selection of the plan. Illustrations are also provided.     

利用多维统计方法预测网络拥塞状态

为在具有优先级调度网络环境下较准确地预估平均队列长度和队列等待时间这两个拥塞控制核心指标值,通过综合帕雷托分布、泊松随机过程和平均加权三种统计方法,设计一个包括数据到达过程、数据离开过程、数据优先级调度的计算模型,同时利用矩阵方法推导曲线性参数计算方程。通过仿真,实验结果与模型计算结果比较,两者偏差度小,验证了模型能准确预测网络状态。     

客户接收概率在玻纤制品质量管理中的应用

为了在玻璃纤维生产中提高发现问题的能力,在玻璃纤维制品中应用了接收质量限AQL值、抽样检验、二项式计算接收、概率等原理,将玻纤制品的检测数据转化成可以量化且直观的百分比数值,用来判断客户的接收情况,从而达到降低质量问题发生的概率,起到玻纤制品生产中问题产生的预警作用。     

浅析建筑物鉴定中的计数抽样方案

在介绍计数型抽样检验原理的基础上,从建筑物鉴定检测的特点出发提出了采用相应抽样检验国家标准的建议。指出了《建筑结构检测技术标准》GB／T50344—2004中关于计数抽样检测方案的规定失之过松,有可能为建筑物留下安全隐患,不宜采用。     

基于模式匹配的软件架构恢复的研究

行业软件的开发常常是一个不断进化的过程。架构恢复对干软件维护和软件进化至关重要。本文介绍了软件架构恢复策略的框架、步骤和相关研究;描述了基于模式匹配进行软件架构恢复的方法,着重介绍了该架构恢复所基于的恢复环境、执行过程和模武匹配算法的具体实现。最后,给出了对Clips系统进行实验所得到的恢复结果的评估。     

Designing a two-rank acceptance sampling plan for quality inspection of geospatial data products

To address the disadvantages of classical sampling plans designed for traditional industrial products, we originally propose a two-rank acceptance sampling plan (TRASP) for the inspection of geospatial data outputs based on the acceptance quality level (AQL). The first rank sampling plan is to inspect the lot consisting of map sheets, and the second is to inspect the lot consisting of features in an individual map sheet. The TRASP design is formulated as an optimization problem with respect to sample size and acceptance number, which covers two lot size cases. The first case is for a small lot size with nonconformities being modeled by a hypergeometric distribution function, and the second is for a larger lot size with nonconformities being modeled by a Poisson distribution function. The proposed TRASP is illustrated through two empirical case studies. Our analysis demonstrates that: (1) the proposed TRASP provides a general approach for quality inspection of geospatial data outputs consisting of non-uniform items and (2) the proposed acceptance sampling plan based on TRASP performs better than other classical sampling plans. It overcomes the drawbacks of percent sampling, i.e., “strictness for large lot size, toleration for small lot size,” and those of a national standard used specifically for industrial outputs, i.e., “lots with different sizes corresponding to the same sampling plan.”     

PB制作考务管理系统中数据表结构的修改

＂考务管理系统＂是根据当前各学校考试科目不尽相同的特点开发的一种实用型软件。软件开发利用分布式数据库前端（客户端）开发工具PowerBuilder和网络数据库ASA（Adaptive Server Anywhere）。由于本软件利用动态SQL语句实现了对考试科目的动态修改,所以它能适合各院校的各种考试,完成对考生远程（网上）报名、准考证打印、考生成绩排名、被录取考生名单。     

根据新版GB2828.1-2003抽样检验程序对成品进行质量控制

本文介绍了2003年发布的新版GB/T2828.1-2003<计数抽样检验程序第1部分:按接受质量限(AQL)检索的逐批检验抽样计划>的特点,重点介绍其优化我司成品抽样检验中的作用.