Simulation is a relatively new tool for business process analysis in the Biotech industry. This paper discusses an application of discrete event simulation in analyzing the capacity needs of a shared resource in the manufacturing facility at Bayer Corporation’s Berkeley site. The SIGMA simulation model was used to analyze the workload patterns, run different workload scenarios, taking into cons...

In this paper we present a unified (probabilistic/possibilistic) model for resource-constrained project scheduling problem (RCPSP) with uncertain activity durations and a concept of a heuristic approach connected to the theoretical model. It is shown that the uncertainty management can be built into any heuristic algorithm developed to solve RCPSP with deterministic activity durations. The esse...

In this study, we aim to present a new model for the resource-constrained project scheduling problem (RCPSP) considering a working calendar for project members and determined the skill factor of any member using the efficiency concept. For this purpose, the recyclable resources are staff resources where any person with multiple skills can meet the required skills of activities in a given time. ...

This paper describes the design and development of DEVS/HLA, an HLA-compliant modeling and simulation environment that supports high level model building using the DEVS (Discrete Event System Specification) methodology, a sound formal M&S framework. After a brief review of the DEVS formalism, we discuss the implementation of the formalism in C++ as a layer above the Runtime Infrastructure (RTI)...

Flood is one of the most important natural disasters affect China greatly, especially for southeast cities. To help mitigate the loss brought by it, technologies such as simulation, visualization, decision support system, etc. could be utilized in the process of emergency management for city flood. Thus the Flood Simulation and Decision Support System (FSDSS) comes into being. It is an integrat...

Smart city as a novel further urban development pattern paid more attention by governments, is no longer confined to the virtual concept frameworks, and is now realized and proved effectively in different domain, especially in emergency management. Based on current research of emergency management in smart city system, with considering the new features of emergency resources, such as real time,...

We describe a production shop which needed to undertake schedule analyses at the macro level of planning and explain the methods of using simulation to obtain valid, credible schedule analyses quickly. After discussion of the simulation model itself we present actual simulation results and conclusions. These successful simulation results help the production shop attain nimble adaptation to prod...

this article proposes composition of fuzzy sets theory with discrete-event simulation and puts it into application in order to model uncertain activity duration in simulating a real-world system. the purpose of this paper is to assess the usefulness of fuzzy simulation for modeling uncertain activity duration, especially when insufficient or no sample data is available. in this research, fuzzy ...

In recent years, dramatic increase in the cost of health care has compelled practitioners to draw a balance between improving efficiency and reducing costs. A discrete-event simulation model has been constructed to assist a typical two-physician family practice healthcare clinic in evaluating potential resource allocations to improve operating efficiencies and patient satisfaction. A performanc...