scholarly journals DE-Sim: an object-oriented, discrete-event simulation tool for data-intensive modeling of complex systems in Python

2020 ◽  
Vol 5 (55) ◽  
pp. 2685
Author(s):  
Arthur Goldberg ◽  
Jonathan Karr
Keyword(s):  
Complex Systems ◽  
Discrete Event Simulation ◽  
Discrete Event ◽  
Object Oriented ◽  
Simulation Tool ◽  
Data Intensive ◽  
Event Simulation

Discrete Event Simulation: An Efficient Tool to Assist Shipyard Investment and Production Planning

2004 ◽  
Vol 20 (03) ◽  
pp. 176-182
Author(s):  
Matthias Krause ◽  
Frank Roland ◽  
Dirk Steinhauer ◽  
Maximilian Heinemann
Keyword(s):  
Discrete Event Simulation ◽  
Discrete Event ◽  
Object Oriented ◽  
Simulation Models ◽  
Resource Planning ◽  
Simulation Tool ◽  
Production Flow ◽  
Holistic Model ◽  
Event Simulation ◽  
Tool Set

The complexity both of the product ship and the shipbuilding process make planning tasks in long, medium, and short terms difficult and lead to serious uncertainties. Discrete event simulation can be used to test and evaluate different scenarios in investment planning, scheduling, and resource planning. Using a virtual shipyard environment, the cost to find optimum solutions and the risk related to wrong decisions in the real world can be drastically reduced. However, due to the special skills and efforts usually needed to develop simulation models, the practical application of production flow simulation in shipyards is still rather limited. Object-oriented simulation tool sets specially developed for shipbuilding needs provide the chance to drastically reduce these efforts. Object libraries containing general and shipbuilding specific components with defined interfaces shorten the time needed for development of models for similar purposes. Furthermore, the integration of discrete event simulation models for certain shipyard facilities into a holistic model of the entire enterprise is made possible by using a tool set. Because of costs, some shipyards shy away from investing in simulation techniques. Networking activities and joint projects on simulation issues help to overcome those obstacles. German Flensburger Schiffbaugesellschaft already uses a simulation tool set successfully and actively cooperates with universities and other shipyards, while Center of Maritime Technologies has gathered experience in this field during participation in several simulation projects with other shipyards, for example, Jos. L. Meyer and Aker Ostsee. The article revues practical applications of simulation, gives an impression of how object-oriented simulation tool libraries can be structured, and outlines collaboration possibilities for making simulation applications affordable.

Using Object-Oriented Frame Language for Realizing Discrete Event Simulation

1996 ◽  
Author(s):  
Ming Dong ◽  
Jianzhong Cha ◽  
Mingcheng E
Keyword(s):  
Knowledge Base ◽  
Discrete Event Simulation ◽  
Discrete Event ◽  
Object Oriented ◽  
Simulation Models ◽  
Activity Cycle ◽  
Event Simulation ◽  
Knowledge Based ◽  
Inference Engines ◽  
Reasoning About Knowledge

Abstract In this paper, we realize knowledge-based discrete event simulation model’s representation, reasoning and implementation by means of object-oriented(OO) frame language. Firstly, a classes library of simulation models is built by using the OO frame language. And then, behaviours of simulation models can be generated by inference engines reasoning about knowledge base. Lastly, activity cycle diagrams can be used to construct simulation network logic models by connecting the components classes of simulation models. This kind of knowledge-based simulation models can effectively solve the modeling problems of complex and ill-structure systems.

Capacity Decision in Emergency Hospital Operation Rooms

2018 ◽  
pp. 140-155
Author(s):  
Ana Carolina Pereira de Vasconcelos Silva ◽  
Daniel Bouzon Nagem Assad ◽  
Thais Spiegel
Keyword(s):  
Emergency Department ◽  
Problem Solving ◽  
Discrete Event Simulation ◽  
Operations Management ◽  
Discrete Event ◽  
Design Management ◽  
Simulation Tool ◽  
Event Simulation ◽  
Production Distribution ◽  
Capacity Decision

The operations management is a multidisciplinary field that investigates, for instance, the design, management and processes improvement focused on the development, production, distribution and delivery of products and services, encompassing activities such as the implementation of policies, making quota decisions, identification and problem solving, response to uncertainty, among others. Regarding the resources dimensioning in hospitals, the Brazilian scenario is limited to legislative instruments that assume a prior and added sizing. This chapter uses a discrete event simulation tool to set the amount of operation rooms needed for patient care in an emergency department, so that emergency patients have guaranteed compliance, minimizing the cancellation of elective surgeries because of this type of demand. As a result, it was found that the minimum amount established by normative instruments was not appropriate to the specific requirements of the organization.

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