摘要:

AbstractFor the familyD, consisting of those zero‐sum two‐person games which have a value, the value‐function onDis characterized by four properties called objectivity, monotony, symmetry and suffic

ISSN:0028-1441    

DOI:10.1002/nav.3800280112

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

年代:1981

数据来源: WILEY

摘要:

AbstractPlanning for a cardiovascular disease reduction program, soon to be initiated by the United States Air Force, has required an evaluation of its expected cost effectiveness. During the course of this evaluation, it was necessary to consider manpower flows and their expected changes in response to the disease reduction program. This paper describes several manpower models that were applied: a simple expected value equilibrium model; a cross‐sectional model that considered the length of service of personnel; and a staffing model used to optimize the allocation of paramedics to the many Air Force bases of various sizes. The relevance of these models to the cost effectiveness evaluation is shown but the detailed cost effectiveness results are not presente

ISSN:0028-1441    

DOI:10.1002/nav.3800280113

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

年代:1981

数据来源: WILEY

摘要:

AbstractThis paper describes an empirical evaluation of several approximations to Hadley and Whitin's approximate continuous review inventory model with backorders. It is assumed that lead time demand is normally distributed and various exponential functions are used to approximate the upper tail of this distribution. These approximations offer two important advantages in computing reorder points and reorder quantities. One advantage is that normal tables are no longer required to obtain solutions, and a second advantage is that solutions may be obtained directly rather than iteratively. These approximations are evaluated on two distinct inventory systems. It is shown that an increase in average annual cost of less that 1% is expected as a result of using these approximations. The only exception to this statement is with inventory systems in which a high shortage cost is specified and ordering costs are unusually low.

ISSN:0028-1441    

DOI:10.1002/nav.3800280114

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

年代:1981

数据来源: WILEY

ISSN:0028-1441    

DOI:10.1002/nav.3800280115

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

年代:1981

数据来源: WILEY

摘要:

AbstractLetf1andf2map [0,T] into the real numbers. A system is following eitherf1orf2and earning the associated reward ∫f1or ∫f2, respectively. It is possible at any time to switch fromfitofjby paying a switching costb>0. We determine a switching policy which maximizes the total reward. Conditions which guarantee a planning horizon are establis

ISSN:0028-1441    

DOI:10.1002/nav.3800280116

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

年代:1981

数据来源: WILEY

ISSN:0028-1441    

DOI:10.1002/nav.3800280101

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

年代:1981

数据来源: WILEY