ISSN:0160-5682    

DOI:10.1057/jors.1964.1

出版商:Taylor&Francis    

年代:1964

数据来源: Taylor

ISSN:0160-5682    

DOI:10.1057/jors.1964.2

出版商:Taylor&Francis    

年代:1964

数据来源: Taylor

ISSN:0160-5682    

DOI:10.1057/jors.1964.3

出版商:Taylor&Francis    

年代:1964

数据来源: Taylor

摘要:

AbstractIn the sense of this paper "traffic models" are formulae for predicting the number of journeys made between one place and another, usually between one part of a town and another. Some models are described and are applied to hypothetical examples. The models are divided into two main classes, "gravity models" and "opportunity models". Gravity models are based on the assumption that the amount of traffic between two areas varies with the size or importance of the areas and with the distance between them in a manner analogous to the inverse square law of gravitation. The idea of opportunity models arises from the supposition that travellers consider possible destinations or opportunities in order of distance from their origin, accepting or rejecting them in a certain proportion. It is inferred that the basic form of gravity model tends to overestimate traffic in high-density areas, whereas the opportunity model has the opposite tendency. However, either type of formula can be adapted so that these defects are overcome. Much of the section on gravity models relates to the work of J. C. Tanner of the Road Research Laboratory.

ISSN:0160-5682    

DOI:10.1057/jors.1964.4

出版商:Taylor&Francis    

年代:1964

数据来源: Taylor

摘要:

AbstractIn Part I, a Complex System consisting ofncomponents having a wide class of inter-failure time distributions and general repair time distributions with probability densitiesS1(x),S2(x), ..,Sn(x) is examined with regard to Dependability. Some particular results are derived at the end of this part. The well-known phase and supplementary-variable techniques are employed for the solution. Part II considers the possibility of the inclusion of waiting time distribution for a failed system while examining its behaviour with regard to dependability. The Laplace transforms of various probabilities that the system is operable, waiting for repair and under repair are obtained. Some particular cases are then discussed in some detail.

ISSN:0160-5682    

DOI:10.1057/jors.1964.5

出版商:Taylor&Francis    

年代:1964

数据来源: Taylor

ISSN:0160-5682    

DOI:10.1057/jors.1964.6

出版商:Taylor&Francis    

年代:1964

数据来源: Taylor

ISSN:0160-5682    

DOI:10.1057/jors.1964.8

出版商:Taylor&Francis    

年代:1964

数据来源: Taylor

ISSN:0160-5682    

DOI:10.1057/jors.1964.10

出版商:Taylor&Francis    

年代:1964

数据来源: Taylor

ISSN:0160-5682    

DOI:10.1057/jors.1964.11

出版商:Taylor&Francis    

年代:1964

数据来源: Taylor

ISSN:0160-5682    

DOI:10.1057/jors.1964.12

出版商:Taylor&Francis    

年代:1964

数据来源: Taylor