摘要:

The possibility of using pulse rate during work as a measure of the energy coat of that work, in lieu of the more cumbersome gas analysis techniques, has been examined in actual industrial environments for varied work and thermal loads. Three sets of data from some hot dry industries situated in different parts of India were analysed : (a) extreme levels ; (b) moderate levelB ; and (c) comparatively low levels of work and heat loads. Pulse rate (PR) measurements, in conjunction with body surface area (BSA) and corrected effective temperature (CET) were found to be significantly correlated with energy expenditure (EE) at both high and moderate levels (τ= 0-889 and 0-902, respectively); the predictive ability of the corresponding regression coefficients was also high (SE of estimate—± 10%).

ISSN:0020-7543    

DOI:10.1080/00207547508943014

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor

摘要:

This paper is concerned with the comparison and selection of systems for the mass production, in particular the assembly, of complex discrete items. A possible procedure is proposed for system selection based upon (a) an examination of the feasibility of using certain basic system types in particular situations, (b) a comparison of feasible alternatives based upon certain quantifiable factors, and finally (c) a study of the non-quantifiable aspects of systems. Basic system types are listed, a detailed procedure is proposed for the quantitative analysis and some relevant non-quantifiable factors are identified.

ISSN:0020-7543    

DOI:10.1080/00207547508943015

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor

摘要:

This paper describes a model sequencing algorithm for model-mix assembly lines. A new formulation of the sequencing problem is proposed, the objective function of which is to minimize the overall assembly line-length for no operator interference. Lower bounds for the overall line-length are developed.

ISSN:0020-7543    

DOI:10.1080/00207547508943016

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor

摘要:

This paper deals with optimal scheduling of jobs on identical parallel processors. The paper develops an algorithm for determining the optimal schedule and gives a proof of the algorithm. The criterion used is that of minimizing the total cost for processing all jobs when the jobs are assigned non-decreasing waiting costs which are non-linear. Extension of the algorithm for jobs with due dates is also given. Computational results are given which indicate the effectiveness of the algorithm as compared to complete enumeration.

ISSN:0020-7543    

DOI:10.1080/00207547508943017

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor

摘要:

In this paper, a method based on a new approach has been given for tackling the scheduling problem usually encountered when a number of products are manufactured on a single machine on a repetitive basis. The method provides a near optimum schedule for multi-product single machine systems, and is eminently suitable for those systems where machine utilization is high. An example has been solved for illustrating the method.

ISSN:0020-7543    

DOI:10.1080/00207547508943018

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor

摘要:

A production lot size model has been developed for an inventory system with deteriorating items. Both the varying and constant rate of deterioration have been included in the analysis. For the case of a varying rate, it seems impossible to obtain a simple expression for the production lot size, so a numerical method has been suggested. For the constant rate of deterioration case, an approximate expression has been derived for the production lot size. Finally, a numerical example is solved to show the impact of deterioration.

ISSN:0020-7543    

DOI:10.1080/00207547508943019

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor

摘要:

In this paper an EOQ model is developed especially for a production environment where the inventory to be controlled is raw material. The fundamental difference between this model and others is that a stochastic demand is placed upon the inventory in terms of the time for an individual to consume one unit of inventory rather than the number of units consumed in some time interval. A shortage cost for inventory is imposed via the idle machine (man) cost. The optimal re-order quantity is determined as a function of the stockout probability and the optimal stockout probability is obtained via a one-dimensional search, over some prescribed set of feasible stockout probabilities.

ISSN:0020-7543    

DOI:10.1080/00207547508943020

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor

摘要:

A Hquare-root formula is derived for determining an optimum production schedule under increasing demand and with simple cost assumptions.

ISSN:0020-7543    

DOI:10.1080/00207547508943021

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor

摘要:

This paper presents a model for the determination of the optimal equipment capacity for situations where a stochastic demand of Bervicea can be met by both owned equipment operating on a regular and overtime basis and hired-in equipment from an external source.

ISSN:0020-7543    

DOI:10.1080/00207547508943022

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor

ISSN:0020-7543    

DOI:10.1080/00207547508943025

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor