ISSN:0160-5682    

DOI:10.1057/jors.1962.1

出版商:Taylor&Francis    

年代:1962

数据来源: Taylor

ISSN:0160-5682    

DOI:10.1057/jors.1962.2

出版商:Taylor&Francis    

年代:1962

数据来源: Taylor

ISSN:0160-5682    

DOI:10.1057/jors.1962.3

出版商:Taylor&Francis    

年代:1962

数据来源: Taylor

ISSN:0160-5682    

DOI:10.1057/jors.1962.4

出版商:Taylor&Francis    

年代:1962

数据来源: Taylor

ISSN:0160-5682    

DOI:10.1057/jors.1962.5

出版商:Taylor&Francis    

年代:1962

数据来源: Taylor

ISSN:0160-5682    

DOI:10.1057/jors.1962.6

出版商:Taylor&Francis    

年代:1962

数据来源: Taylor

ISSN:0160-5682    

DOI:10.1057/jors.1962.7

出版商:Taylor&Francis    

年代:1962

数据来源: Taylor

摘要:

AbstractUniversity staff may contribute to operational research by developing and refining its special techniques, or by becoming involved in operational research projects; they may investigate practice to guide them in their research, or in the training of operation analysts. The universities are, in many ways, ideally equipped for operational research work, but involvement in long-term consulting activities is not without serious problems of its own.

ISSN:0160-5682    

DOI:10.1057/jors.1962.8

出版商:Taylor&Francis    

年代:1962

数据来源: Taylor

摘要:

AbstractThis study deals with a class of production scheduling problems characterized by a variable known demand and a fixed cost associated with each production run. The investigation originated from a problem encountered by a petroleum refinery. The refinery management was concerned with the high cost of manufacturing grease cans used for packaging of its grease products. This high cost resulted from the set-up cost incurred whenever the equipment (which was normally used to manufacture oil cans) was converted for manufacturing a relatively small quantity of grease cans with lithographed grade marking. The length of the production runs for making grease cans was severely restricted by a limited storage capacity. In order to meet the radically varying demand, the refinery frequently had to hand-stencil the grade on cans without grade marking. The problem faced by the management was to find a procedure for deciding when grease cans with lithographed grade marking should be produced so as to operate optimally.

ISSN:0160-5682    

DOI:10.1057/jors.1962.9

出版商:Taylor&Francis    

年代:1962

数据来源: Taylor

摘要:

AbstractOne very natural way of describing industrial processes with interference gives rise to particularly unwieldy mathematical expressions; but by a change of language, these expressions can be simply handled by the familiar notation of matrix algebra-where, however, addition and multiplication do not have their usual arithmetical meanings. This line of attack promises to produce a useful machinery for the analysis of systems of interacting processes, but first all the usual algebraic questions must be answered-e.g. the question of evaluating the eigenvalues and eigenvectors of a matrix in the new notation. This problem is equivalent to that of determining the steady states of a system of interacting processes, assuming constant activity times. This paper shows that the eigenvalue of a general matrixAcan be determined explicitly in terms ofA, as can the eigenvector in a particular set of cases. The general eigenvector and eigenvalue computation problem can be simplified into a dual form closely analogous to a formulation of the Assignment Problem by H. W. Kuhn.

ISSN:0160-5682    

DOI:10.1057/jors.1962.10

出版商:Taylor&Francis    

年代:1962

数据来源: Taylor