摘要:

AbstractNote by Managing Editor: The impossibility of a global airlift can be established by very simple means intuitively. However, the methods used by the authors in arriving at this same conclusion, even by a limited analysis, may be of interest to the reader. This paper gives quantitative proof of the magnitude of effort required for importing by air in lieu of using sea lift.

ISSN:0028-1441    

DOI:10.1002/nav.3800060202

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1959

数据来源: WILEY

ISSN:0028-1441    

DOI:10.1002/nav.3800060203

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1959

数据来源: WILEY

摘要:

AbstractIt is shown that there are precisely nm‐1mn−1bases in a transportation problem having m destinations and n origins. This number gives an upper limit to the number of iterations in solving the problem and is much smaller than that given by the combinatorial formula (mn)!/(m+n−1)1 (mn+1

ISSN:0028-1441    

DOI:10.1002/nav.3800060204

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1959

数据来源: WILEY

ISSN:0028-1441    

DOI:10.1002/nav.3800060205

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1959

数据来源: WILEY

摘要:

AbstractRenewal theory is used to derive the stationary distribution of inventory present at a stocking point characterized by stationary compound Poisson demand, independent and generally distributed lead times, impatient customers, and the use of a two‐bin ordering rule. Inventory‐associated costs are evaluated, and a numerical example is gi

ISSN:0028-1441    

DOI:10.1002/nav.3800060206

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1959

数据来源: WILEY

ISSN:0028-1441    

DOI:10.1002/nav.3800060207

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1959

数据来源: WILEY

摘要:

AbstractThe Standard described here was prepared to meet a growing need for the use of standard sampling plans for inspecting products procured by the Government. It may serve as an alternate to MIL‐STD‐105A, which provides sampling plans for lot‐acceptance inspection by attributes. The variables sampling plans apply to a single quality characteristic and maybe used whenever the quality characteristic for test can be measured on a continuous scale. Like the pattern of MIL‐STD‐105A, risks of rejecting acceptable material were planned to decrease with increase in size and lot. In the new Standard, however, samples sizes are considerably smaller than those in MIL‐STD‐105A for corresponding sampling plansThe Standard outlines procedures to be followed when the variability is unknown—either a standard‐deviation or an average‐range method—as well as those to be used when the variability is known. A new concept in the Standard is a lot‐acceptance criterion obtained by comparing an unbiased minimum‐variance estimate, r, of the true percent defective with a suitably chosen constant, M, which represents the maximum allowable percent defective for sample estimates. This procedure, when used for the two‐sided specification‐limit case, provides operating characteristics, for given percent defective, which are essentially the same as those for the one‐sided specification‐limit case, regardless of the total percent defective in the lot, which consists of the sum of the percent defective above the upper and below the lower specification limits. For the one‐sided specification‐limit case, the acceptance criterion provides the identical probability of acceptance as obtained with the familiar ks statistic for suitably chosen k. Values of k also are included in the standard, thus, permitting use of ei

ISSN:0028-1441    

DOI:10.1002/nav.3800060208

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1959

数据来源: WILEY

ISSN:0028-1441    

DOI:10.1002/nav.3800060209

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1959

数据来源: WILEY

ISSN:0028-1441    

DOI:10.1002/nav.3800060210

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1959

数据来源: WILEY

ISSN:0028-1441    

DOI:10.1002/nav.3800060211

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1959

数据来源: WILEY