摘要:

This paper presents a number of results relating to the theory and estimation of improvement curves and to some of the consequences of the improvement phenomenon, such as the importance of labour turnover, the effect on costs of breaking production runs and the need to modify the traditional optimum lot size formula.

ISSN:0020-7543    

DOI:10.1080/00207547008929840

出版商:Taylor & Francis Group    

年代:1970

数据来源: Taylor

摘要:

The problem of determining the optimum size of a repair or servicing crew for a given number of automatic machines is examined. Charts are presented which are applicable to the Poisson arrival—exponential service time model and provide a ready means of solution to the problem in this case. Further charts are presented which enable the expected utilisations of the servicemen and machines to be easily determined.

ISSN:0020-7543    

DOI:10.1080/00207547008929841

出版商:Taylor & Francis Group    

年代:1970

数据来源: Taylor

摘要:

Experiments are described in which mild steel plates of 1/10; in. thickness were set on hardened and ground flat steel dies having central square-shouldered round holes, of diameter ranging from 1/10; to 1£ in., and subjected to the shock wave resulting from the detonation of an underwater high explosive charge. Graphical results are presented showing the variation of the deformation of the plates due to cupping and to shear, with increasing charge size, and with varying hole diameter.

ISSN:0020-7543    

DOI:10.1080/00207547008929842

出版商:Taylor & Francis Group    

年代:1970

数据来源: Taylor

摘要:

This paper discusses the use of the geometric programming technique to determine the cutting speed and Teed which yield minimum production cost. The method provides for simultaneous determination of the cost optimum values of speed and feed and allows for the incorporation of restrictions on the allowable levels of the machining variables.

ISSN:0020-7543    

DOI:10.1080/00207547008929843

出版商:Taylor & Francis Group    

年代:1970

数据来源: Taylor

摘要:

The present study relates to a transport organisation operating a fleet of aircraft and aims at determination of the optimal spare float of engines. The flow of the engines is viewed as a queueing problem in a closed loop system with variable demand and supply. The servicing facility consists of three stations in tandem. Two cases of the servicing facility operation are investigated, first when no inter-stage queue is permitted, and second when a queue length of one unit is allowed between the first and second stations. The solution is obtained by the Monte Carlo Simulation technique. The results are compared with those obtained from a reliability theoretical approach and conclusions are drawn.

ISSN:0020-7543    

DOI:10.1080/00207547008929844

出版商:Taylor & Francis Group    

年代:1970

数据来源: Taylor

摘要:

The development of techniques of plant layout and facilities design is followed, the various techniques reviewed, some questions of criteria, methodology and validity of the various approaches are discussed, and a number of suggestions and problems amenable to future investigation are presented.

ISSN:0020-7543    

DOI:10.1080/00207547008929845

出版商:Taylor & Francis Group    

年代:1970

数据来源: Taylor

摘要:

A decomposition approach developed by the author is modified to reduce the computational effort involved. The modified algorithm is discussed. Computational experiments have been conducted for comparative evaluation of both original and modified decomposition algorithms. Significant results are reported.

ISSN:0020-7543    

DOI:10.1080/00207547008929846

出版商:Taylor & Francis Group    

年代:1970

数据来源: Taylor

摘要:

An analytic method for developing analogue model iterative strategies suitable for dynamic production testing is presented. The method is applicable to complex systems of known topology, and is suitable for use by relatively unskilled technicians with no prior system knowledge. Preliminary results of a simulator study based on the probabilistic model of an electro-hydraulic servomechanism show that model coefficients are readily measured to an acceptable accuracy.

ISSN:0020-7543    

DOI:10.1080/00207547008929847

出版商:Taylor & Francis Group    

年代:1970

数据来源: Taylor