A computer simulation program, which runs efficiently on
micro-computers, for the diffusion of point defects in the diamond
and zincblende structure was developed. The simulated point
defects comprise vacancies, host or impurity interstitials on any
of three types of interstitials sites, and impurities. Diffusion
via vacancy first and second neighbor...
Effects of stochastic variations of parameters in the planning
and design of a particleboard production system are studied. The
solution obtained from a linear deterministic optimization model is
compared against both the solution derived from the traditional
stochastic programming techniques and the distribution of optimal
objective function values obtained from...
The spatial and temporal behavior of invasive species spread implies that optimal management strategies involve decisions over space and time. Dispersal and propagule pressure are two primary drivers of the spatial-temporal ecological process of species invasion. In the case of riparian communities, stream flow drives the dispersal of vegetation propagules....
In this paper, the description and results of simulation experiments investigating buffer allocation in closed serial production lines are presented. The production lines studied consist of either reliable or unreliable workstations, and have asynchronous movement of jobs. The experimental results are used to demonstrate a buffer allocation decomposition result for...
Some of the problems concerning the present educational programs
which confront the institutions of higher education are, reviewed.
Resources allocation is at the root of the issue.
Budgeting orientations are presented with special emphasis on
Planning Programming Budgeting Systems. PPBS is still in its
developmental stage in the field of...
In many estuarine and ocean areas, aquaculture is seen as an alternative to traditional commercial fish harvesting practices. A significant problem hindering the emergence or the continuing growth of aquaculture in many areas is the conflict that arises among it and other competing ocean uses. Real world examples include the...
In this paper, we propose a credit-based resource allocation technique for dynamic spectrum access (DSA) systems that is robust against malicious and selfi sh behaviors and ensures good overall system fairness performance while also allowing spectrum users to achieve high amounts of service. We also propose a new objective function...
Firms' participation in exporting or foreign direct investment is an extremely rare behavior: only 4 percent of over 5.5 million U.S. firms were exporters in 2000. Exporters are generally larger (e.g. output and employment) and more productive than firms serving only domestic markets. Such heterogeneity within a narrowly defined industry...
A computerized ranch simulation model of an eastern Oregon cattle
ranch was tested for its ability to evaluate the economics of public
rangeland improvement practices. The model was used to estimate
likely impacts of various public policy alternatives for rangeland
improvement on the relative profitability of a 400 mother cow...
Simulation is a powerful analytical tool for designing or experimenting with complex systems. Simulation has been defined as the process of designing a model of a real system and conducting experiments with this model either to understand the system’s behavior or to evaluate various strategies for operating it (Pegden et...