Simplicity, totality and change: a logistic viewpoint in inventory management
Abstract This paper demonstrates that even a simplified model works well when the model is revised from time to time. A new type of management problem results: easy-to-create models which cannot be validated.
The basic concepts of system dynamics optimization
This paper presents the fundamental concepts behind the use of heuristic optimization as a means of improving the behavior of systems as represented by system dynamics models. The philosophy of the approach is highlighted and the underlying software explained, as a prerequisite to developing some simple demonstration examples.
Drug Testing in Public Agencies: Are Personnel Directors Doing Things Right?
The results of a survey of 300 public agencies personnel directors are reported. The report describes the drug and alcohol testing policies and procedures now used by these respondents. The implications of the survey results are evaluated in terms of critical issues of personnel management practice and public policy: (1) the protection of employees' constitutional rights, (2) the public's right to an effective public service, and (3) management's need to reduce liability risks and to increase program effectiveness.