The simulation-based performance measurement in an evaluation module for Faborg-Sim simulation software

2010 ◽  
Vol 37 (12) ◽  
pp. 8211-8220 ◽  
Author(s):  
Halil Ibrahim Koruca ◽  
Gultekin Ozdemir ◽  
Erdal Aydemir ◽  
Muhammed Cayirli
Computation ◽  
2020 ◽  
Vol 8 (1) ◽  
pp. 18 ◽  
Author(s):  
Abdel-Rahman Hedar ◽  
Amira Allam ◽  
Alaa Abdel-Hakim

With the rapid growth of simulation software packages, generating practical tools for simulation-based optimization has attracted a lot of interest over the last decades. In this paper, a modified method of Estimation of Distribution Algorithms (EDAs) is constructed by a combination with variable-sample techniques to deal with simulation-based optimization problems. Moreover, a new variable-sample technique is introduced to support the search process whenever the sample sizes are small, especially in the beginning of the search process. The proposed method shows efficient results by simulating several numerical experiments.


Author(s):  
Babak Shirazi

Healthcare systems engineering in emergency departments (EDs) are developing rapidly in the world nowadays. Fast track (FT) as a rapid treatment system is considered to facilitate ED patient flow. To know how FT can improve the performance of ED, one should study the best configuration of resources for implementation of FT. This research presents a pattern for implementation of FT systems in hospital EDs using healthcare simulation paradigms. Simulation-based optimization model uses modeling and simulation capabilities to generate configurations of FT resources and its patient prioritization pattern with Arena[Formula: see text] simulation software. A decision making method is used to select the optimal configuration based on pre-specified performance indicators. The results imply that the proposed FT implementation pattern is efficient and capable of improving patient flow.


2020 ◽  
Vol 6 (3) ◽  
pp. 136-155
Author(s):  
Nikita Gupta ◽  
Nishant Bhardwaj ◽  
Gulam Muhammad Khan ◽  
Vivek Dave

Background: Computational fluid dynamics (CFD) came into existence with great success, thereby replacing the traditional methods used to simulate the problems related to the flow of fluid. First CFD utilitarian was introduced to the world in 1957, which was developed by a team at Los Alamos National Lab. For tremendous performance and to meet the expected results with ease for modern process conditions, engineers are now more inclined towards the use of simulation software rather than traditional methods. Hence, in the current scenario with the advancement of computer technologies, “CFD is recognized as an excellent tool for engineers to resolve real-world problems.” Introduction: CFD is defined as a branch of fluid dynamics which involves the use of numerical analysis and data structure to solve complications related to the flow of fluids (gasses or liquids). CFD is based on three major principles that are mass conservation, Newton's second law, and energy conservation. CFD has extended to a number of applications at an alarming rate in every field such as in aerospace, sports, food industry, engineering, hydraulics, HVAC (Heating, Ventilating, and Air conditioning), automotive, environmental, power generation, biomedical, pharmaceutical, and many more. Hence, a number of software like ANSYS, Open Foam, SimScale, Gerris, Auto desk simulation, Code_Saturne, etc, are beneficial in order to execute the operations, and to find the solution of realworld problems within a fraction of seconds. Methods: CFD analysis involves three major steps; pre-processing, solution, and post-processing. Preprocessing deals with defining model goals, identification of domain, designing, and creating the grid. Solution involves setting up the numerical model, computing, and monitoring the solution; whereas, post-processing includes results of the examination and revision of the model. Results: The review includes current challenges about the computational fluid dynamics. It is relevant in different areas of engineering to find answers for the problems occurring globally with the aid of a number of simulation-based software hereby, making the world free from complex problems in order to have a non-complicated scenario. Conclusion: Computational fluid dynamics are relevant in each, and every kind of problem related to the fluid flow, either existing in the human body or anywhere. In the contemporary era, there are enormous numbers of simulation-based software, which provide excellent results with just one click, thereby resolving the problems within microseconds. Hence, we cannot imagine our present and upcoming future without CFD, which has ultimately made the execution of work easier, leaving behind non-complicating scenarios. Lastly, we can conclude that “CFD is a faster, smarter, and lighter way in designing process.”


2011 ◽  
Vol 148-149 ◽  
pp. 721-724
Author(s):  
Xiao Lin Lu

The distributed virtual control and simulation has been investigated collaborative compute environment. The VNC and RFB protocol is a thin-client computing model for setting up a cooperative environment. This paper proposed a WSRFB Protocol to construct a distributed virtual control and simulation environment with shared remote program. The distributed virtual control can simulate the window generated by the distributed virtual control and simulation software. The algorithm successfully applied it in the telecommunication network management system integration. The results and experiments demonstrated that the WSRFB protocol could offer a great flexibility simulation environment.


2011 ◽  
Vol 63 (4) ◽  
pp. 796-803 ◽  
Author(s):  
M. V. Ruano ◽  
J. Ribes ◽  
A. Seco ◽  
J. Ferrer

This paper presents a computer tool called DSC (Simulation based Controllers Design) that enables an easy design of control systems and strategies applied to wastewater treatment plants. Although the control systems are developed and evaluated by simulation, this tool aims to facilitate the direct implementation of the designed control system to the PC of the full-scale WWTP (wastewater treatment plants). The designed control system can be programmed in a dedicated control application and can be connected to either the simulation software or the SCADA of the plant. To this end, the developed DSC incorporates an OPC server (OLE for process control) which facilitates an open-standard communication protocol for different industrial process applications. The potential capabilities of the DSC tool are illustrated through the example of a full-scale application. An aeration control system applied to a nutrient removing WWTP was designed, tuned and evaluated with the DSC tool before its implementation in the full scale plant. The control parameters obtained by simulation were suitable for the full scale plant with only few modifications to improve the control performance. With the DSC tool, the control systems performance can be easily evaluated by simulation. Once developed and tuned by simulation, the control systems can be directly applied to the full-scale WWTP.


2021 ◽  
Author(s):  
Lane Yoder

<p>The lamprey is one of the most ancient of extant vertebrate species. It has changed relatively little in 450 million years and is considered a prototype for all vertebrates. Its primitive nervous system has been studied extensively, and the basic architecture of the central pattern generator (CPG) that produces its anguilliform swimming motion is well known. Here it is shown that each segmental component of the lamprey's CPG is a JK flip-flop, with additional excitatory inputs and feedback that cause all of the neurons' states to oscillate. The JK flip-flop is the most widely used flip-flop design in electronic computational systems because of its advantageous features. This is apparently the first discovery that a known network of neurons functions as a logic circuit. The lamprey's oscillator can be implemented with electronic hardware, and the design is apparently unknown in engineering. A simulation based on simple neuron responses to excitation and inhibition illustrates the common period, phase relationships, and burst durations of the segmental cells' oscillations. Simulation software for electronic logic circuits verifies the simulated neuron responses, on vastly different time scales. The simulation methods presented here may aid in further study of CPG neurophysiology. The architecture of the oscillating JK flip-flop may aid in the development of artificial neural network applications such as robotics.</p>


2016 ◽  
Vol 106 (04) ◽  
pp. 249-254
Author(s):  
O. Lange ◽  
M. Dangelmaier

In der Produktionsplanung kommt vermehrt Simulationssoftware zum Einsatz, um Zeit und Kosten zu reduzieren. Viele Anwender benutzen die Programme allerdings nur gelegentlich. Aufgrund des relativ geringen Übungsgrades besteht ein hoher Bedarf an Unterstützung. In marktgängigen Softwarewerkzeugen sind jedoch bislang kaum wirksame Unterstützungsfunktionen implementiert. Basierend auf Anwenderbefragungen in Unternehmen innerhalb des europäischen Forschungsprojektes DREAM (simulation based application Decision support in Real-time for Efficient Agile Manufacturing) werden drei Konzepte für die Benutzerunterstützung vorgeschlagen. &nbsp; Production planning is increasingly performed by the application of simulation software in order to reduce costs and time. But many users use this kind of software just occasionally. Due to this low level of usage, there is a great demand in support. For those software packages, useful and efficient support tools were not implemented until now. Based on surveys realized in some companies in the European project DREAM three different concepts of user support are suggested.


2014 ◽  
Vol 709 ◽  
pp. 290-293
Author(s):  
Lan Chun Zhang ◽  
Xin Fan ◽  
Wei Xing Hang

In view of the working principle and characteristics of the CVT with electronic control and a motor as actuator (EM-CVT), a economical car performance is studied by means of combination of simulation calculation and prototyping test. EM-CVT mathematic model is established and embedded into the simulation software Cruise to finish the whole vehicle modeling. The performance comparison between vehicle with EM-CVT and automatic transmission is presented after simulation based on the experiment data on the EM-CVT prototype under UDC, which indicates that the vehicle fuel consumption with EM-CVT is reduced distinctly with the same power performance.


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