Application of load-oriented manufacturing control in industry

This paper deals with multi-stage lotsizing models for imperfect production processes. The effect of imperfect quality on lotsizing decisions and effect ofinspection errorsare taken into consideration in the proposed models. Numerical examples are presented for illustration purposes. The developed models are very helpful for justifying quality assurance and quality improvement efforts.     

免费婚检、孕检的投入产出分析——以广东某区为例

本文从经济学的角度,以投入产出模型和机会成本为理论基础,通过构建以出生缺陷减少为产出收益的免费婚检、孕检投入产出分析模型,并以广东省某区的经验数据进行实证检验,对免费婚检、孕检推行的可行性进行分析。发现推行免费婚孕检的产出与投入的净现值指数为2．08,观显大于1。说明免费婚检、孕检项目可行且效益明显,值得在更大范围内推广。     

生产力标准并非实践标准的具体运用

对生产力标准是实践标准的具体运用的流行观点提出商榷.生产力标准与实践标准属于不同的范畴.前者是历史观方面的命题,后者是认识论方面的命题.两者所适用的检验在对象、性质、依据、内容方面都存在着质的区别.实践标准与生产力标准不是一般原理与个别原理的关系,而是体现真理的客观性与价值性的统一.生产力标准命题是党的政治路线的重大拨乱反正,实现了"文化大革命"结束后的又一次思想大解放.     

The Economic Efficiency of Sampling Size: The Case of Beef Trim

The economically optimal sample size in a food safety test balances the marginal costs and marginal benefits of increasing the sample size. We provide a method for selecting the sample size when testing beef trim for Escherichia coli O157:H7 that equates the averted costs of recalls and health damages from contaminated meats sold to consumers with the increased costs of testing while allowing for uncertainty about the underlying prevalence rates of contamination. Using simulations, we show that, in most cases, the optimal sample size is larger than the current sample size of 60 and, in some cases, it exceeds 120. Moreover, lots with a lower prevalence rate have a higher expected damage because contamination is more difficult to detect. Our simulations indicate that these lots have a higher optimal sampling rate.     

Further results in the optimal policy for imperfect inspection in discrete time

The paper reports investigations into how the optimal inspection interval for a fallible system with imperfect inspection is best determined. This work can be viewed as an extension of Raz and Ladany's 1992 work on imperfect inspection in discrete time. Here the cost functions are rewritten to include a probability conditioning that was omitted. In addition, an upper bound on the search space for the optimal inspection interval is presented. This bound allows one to find the global optimum with very modest computational effort. Insights gained from this bound and from the computational tests are used to present some general properties of the system.     

当归黄芪补血颗粒剂的制备

本研究采用湿法制粒的方法的制备当归黄芪补血颗粒剂,先通过粉碎过筛的方法把当归和黄芪制成细粉,并通过单因素实验和正交实验选择最佳制备工艺。取当归和黄芪细粉（1：5）共24g,加入微晶纤维素3.6g,加入低取代羟丙基纤维素0.72g,加入70%乙醇制软材,然后制粒整粒。并对此颗粒剂进行质量检查,实验表明当归黄芪补血颗粒剂质量合格,生产工艺稳定,合理可行。     

Moment estimators of defect pattern frequencies,allowing for inspection error

Unbiased estimators of the number of individuals in a lot possessing various patterns of types of defects are constructed. Explicit formulas are given for cases of two and three types of defect. Application of the formulas requires knowledge of the probabilities of various kinds of errors in the inspection process.     

球墨铸铁曲轴气体软氮化

论述了球墨铸铁曲轴气体软氮化强化处理工艺及质量保证。     

《小学考》的学术价值--兼评谭耀炬《小学考声韵》校注本的贡献

清代谢启昆的《小学考》具有目录学和语言文字学两方面的学术价值,惜一直流传不广。谭耀炬先 生的《小学考声韵》为我们提供了该书中声韵部分的精审读本。     

A recursive approach for lot sentencing problem in the presence of inspection errors

In this paper, a new sequential acceptance sampling plans in the presence of inspection errors is developed. A suitable profit objective function is employed for optimizing the lot sentencing problem. A backward recursive approach is applied for obtaining the profit of different decisions in each stage of sampling. Required probabilities are obtained using Bayesian rule. A case study is solved for illustrating the application of proposed models and sensitivity analysis are carried out on the parameters of the proposed methodologies and the behaviour of models by changing the parameters are investigated.