منابع مشابه
A Systems Approach to Pest Control Research
WHY SYSTEMS ANALYSIS of objects and any object can be described by listing its attributes." Systems analysis would be a useful tool for certain kinds of pesticide research, particularly that involving Within any system, many subsystems exist. All decisions affecting the environment or the ecosystem. systems are subsystems of the next higher one. This is A well-designed systems analysis would pe...
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Tuberculosis was among the leading causes of death in Europe until the 1800's when it was called "the white plague". During the past several decades, tuberculosis has been steadily declining and it was thought it could be eradicated in advanced countries, despite a persistent endemic in the third world. However, the resurgence of tuberculosis in the late 1980's has alerted the medical community...
متن کاملOptimal Control in Discrete Pest Control Models
We use discrete time models to represent the dynamics of two interacting populations, a “valuable” population and a “pest” population. We investigate optimal control in the form of decreasing the growth rate of the “pest” population with the goal of maximizing the “valuable” population while minimizing the cost of the control. We compare different types of growth functions for the “valuable” po...
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ژورنال
عنوان ژورنال: Bulletin of the Entomological Society of America
سال: 1966
ISSN: 0013-8754
DOI: 10.1093/besa/12.2.229b