WIT transactions on modelling and simulation最新文献_第10页

A Statistical Examination of Distinct Characteristics Influencing the Performance of Vector-Borne Epidemiological Agent-Based Simulation Models 影响媒介传播的基于流行病学主体的模拟模型性能的不同特征的统计检验

WIT transactions on modelling and simulation Pub Date : 2021-03-24 DOI: 10.3390/MODELLING2020009

Anna Paula Galvão Scheidegger, Henrique dos Santos Maxir, A. Banerjee

{"title":"A Statistical Examination of Distinct Characteristics Influencing the Performance of Vector-Borne Epidemiological Agent-Based Simulation Models","authors":"Anna Paula Galvão Scheidegger, Henrique dos Santos Maxir, A. Banerjee","doi":"10.3390/MODELLING2020009","DOIUrl":"https://doi.org/10.3390/MODELLING2020009","url":null,"abstract":"The spread of infectious diseases is a complex system in which pathogens, humans, the environment, and sometimes vectors interact. Mathematical and simulation modelling is a suitable approach to investigate the dynamics of such complex systems. The 2019 novel coronavirus (COVID-19) pandemic reinforced the importance of agent-based simulation models to quickly and accurately provide information about the disease spread that would be otherwise hard or risky to obtain, and how this information can be used to support infectious disease control decisions. Due to the trade-offs between complexity, time, and accuracy, many assumptions are frequently made in epidemiological models. With respect to vector-borne diseases, these assumptions lead to epidemiological models that are usually bounded to single-strain and single-vector scenarios, where human behavior is modeled in a simplistic manner or ignored, and where data quality is usually not evaluated. In order to leverage these models from theoretical tools to decision-making support tools, it is important to understand how information quality, human behavior, multi-vector, and multi-strain affect the results. For this, an agent-based simulation model with different parameter values and different scenarios was considered. Its results were compared with the results of a traditional compartmental model with respect to three outputs: total number of infected individuals, duration of the epidemic, and number of epidemic waves. Paired t-test showed that, in most cases, data quality, human behavior, multi-vector, and multi-strain were characteristics that lead to statistically different results, while the computational costs to consider them were not high. Therefore, these characteristics should be investigated in more detail and be accounted for in epidemiological models in order to obtain more reliable results that can assist the decision-making process during epidemics.","PeriodicalId":89310,"journal":{"name":"WIT transactions on modelling and simulation","volume":"52 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79249013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

On the Application of the Particle Swarm Optimization to the Inverse Determination of Material Model Parameters for Cutting Simulations 粒子群优化在切削仿真材料模型参数逆确定中的应用

WIT transactions on modelling and simulation Pub Date : 2021-02-21 DOI: 10.3390/MODELLING2010007

M. Hardt, D. Jayaramaiah, T. Bergs

{"title":"On the Application of the Particle Swarm Optimization to the Inverse Determination of Material Model Parameters for Cutting Simulations","authors":"M. Hardt, D. Jayaramaiah, T. Bergs","doi":"10.3390/MODELLING2010007","DOIUrl":"https://doi.org/10.3390/MODELLING2010007","url":null,"abstract":"The manufacturing industry is confronted with increasing demands for digitalization. To realize a digital twin of the cutting process, an increase of the model reliability of the virtual representation becomes necessary. Thereby, different models are required to represent the experimental behavior of the workpiece material or frictional interactions. One of the most utilized material models is the Johnson–Cook material model. The material model parameters are determined either by conventional or by non-conventional material tests, or inversely from the cutting process. However, the inverse parameter determination, where the model parameters are iteratively modified until a sufficient agreement between experimental and numerical results is reached, is not robust and requires a high number of iterations. In this paper, an approach for the inverse determination of material model parameters based on the Particle Swarm Optimization (PSO) is presented. The approach was investigated by the inverse re-identification of an initial parameter set. The conducted investigations showed that a material model parameter set can be determined within a small number of iterations. Thereby, the determined material model parameters resulted in deviations of approximately 1% in comparison to their target values. It was shown that the PSO is suitable for the inverse material parameter determination from cutting simulations.","PeriodicalId":89310,"journal":{"name":"WIT transactions on modelling and simulation","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85691806","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Development of a Framework for Wind Turbine Design and Optimization 风力发电机设计与优化框架的开发

WIT transactions on modelling and simulation Pub Date : 2021-02-16 DOI: 10.3390/MODELLING2010006

M. Leimeister, A. Kolios, M. Collu

引用次数: 14

A Comparative Study on the Efficiency of Reliability Methods for the Probabilistic Analysis of Local Scour at a Bridge Pier in Clay-Sand-Mixed Sediments 粘土-砂-混合沉积物桥墩局部冲刷概率分析可靠性方法效率的比较研究

WIT transactions on modelling and simulation Pub Date : 2021-02-07 DOI: 10.3390/MODELLING2010004

Jafar Jafari-Asl, Mohamed El Amine Ben Seghier, Sima Ohadi, You Dong, V. Plevris

{"title":"A Comparative Study on the Efficiency of Reliability Methods for the Probabilistic Analysis of Local Scour at a Bridge Pier in Clay-Sand-Mixed Sediments","authors":"Jafar Jafari-Asl, Mohamed El Amine Ben Seghier, Sima Ohadi, You Dong, V. Plevris","doi":"10.3390/MODELLING2010004","DOIUrl":"https://doi.org/10.3390/MODELLING2010004","url":null,"abstract":"In this work, the performance of reliability methods for the probabilistic analysis of local scour at a bridge pier is investigated. The reliability of bridge pier scour is one of the important issues for the risk assessment and safety evaluation of bridges. Typically, the depth prediction of bridge pier scour is estimated using deterministic equations, which do not consider the uncertainties related to scour parameters. To consider these uncertainties, a reliability analysis of bridge pier scour is required. In the recent years, a number of efficient reliability methods have been proposed for the reliability-based assessment of engineering problems based on simulation, such as Monte Carlo simulation (MCS), subset simulation (SS), importance sampling (IS), directional simulation (DS), and line sampling (LS). However, no general guideline recommending the most appropriate reliability method for the safety assessment of bridge pier scour has yet been proposed. For this purpose, we carried out a comparative study of the five efficient reliability methods so as to originate general guidelines for the probabilistic assessment of bridge pier scour. In addition, a sensitivity analysis was also carried out to find the effect of individual random variables on the reliability of bridge pier scour.","PeriodicalId":89310,"journal":{"name":"WIT transactions on modelling and simulation","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88495514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 14

Optimising Dead-End Cake Filtration Using Poroelasticity Theory 利用孔隙弹性理论优化死角滤饼过滤

WIT transactions on modelling and simulation Pub Date : 2021-01-09 DOI: 10.3390/MODELLING2010002

Jakub Köry, A. Krupp, C. Please, I. Griffiths

{"title":"Optimising Dead-End Cake Filtration Using Poroelasticity Theory","authors":"Jakub Köry, A. Krupp, C. Please, I. Griffiths","doi":"10.3390/MODELLING2010002","DOIUrl":"https://doi.org/10.3390/MODELLING2010002","url":null,"abstract":"Understanding the operation of filters used to remove particulates from fluids is important in many practical industries. Typically the particles are larger than the pores in the filter so a cake layer of particles forms on the filter surface. Here we extend existing models for filter blocking to account for deformation of the filter material and the cake layer due to the applied pressure that drives the fluid. These deformations change the permeability of the filter and the cake and hence the flow. We develop a new theory of compressible-cake filtration based on a simple poroelastic model in which we assume that the permeability depends linearly on local deformation. This assumption allows us to derive an explicit filtration law. The model predicts the possible shutdown of the filter when the imposed pressure difference is sufficiently large to reduce the permeability at some point to zero. The theory is applied to industrially relevant operating conditions, namely constant flux, maximising flux and constant pressure drop. Under these conditions, further analytical results are obtained, which yield predictions for optimal filter design with respect to given properties of the filter materials and the particles.","PeriodicalId":89310,"journal":{"name":"WIT transactions on modelling and simulation","volume":"76 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73348187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Modeling and Simulation of Head Trauma Utilizing White Matter Properties from Magnetic Resonance Elastography 利用磁共振弹性成像的白质特性建模和模拟头部创伤

WIT transactions on modelling and simulation Pub Date : 2020-12-14 DOI: 10.3390/modelling1020014

A. Madhukar, M. Ostoja-Starzewski

引用次数: 7

Layer-Wise Discontinuous Galerkin Methods for Piezoelectric Laminates 压电层合板的分层间断伽辽金方法

WIT transactions on modelling and simulation Pub Date : 2020-12-02 DOI: 10.3390/modelling1020012

I. Benedetti, V. Gulizzi, A. Milazzo

引用次数: 8

Simulation of Oil Well Drilling System Using Distributed–Lumped Modelling Technique 基于分布集总建模技术的油井钻井系统仿真

WIT transactions on modelling and simulation Pub Date : 2020-11-12 DOI: 10.3390/modelling1020011

P. Athanasiou, Y. Hadi

引用次数: 0

A New Approach to Exploring the Relationship between Weather Phenomenon and Truck Traffic Volume in the Cold Region Highway Network 严寒地区公路网天气现象与货车交通量关系的新途径

WIT transactions on modelling and simulation Pub Date : 2020-10-15 DOI: 10.3390/modelling1020008

P. Sahu, Leela Manas Bayireddy, Hyuk-Jae Roh

{"title":"A New Approach to Exploring the Relationship between Weather Phenomenon and Truck Traffic Volume in the Cold Region Highway Network","authors":"P. Sahu, Leela Manas Bayireddy, Hyuk-Jae Roh","doi":"10.3390/modelling1020008","DOIUrl":"https://doi.org/10.3390/modelling1020008","url":null,"abstract":"Weather events are arbitrary, and this makes it difficult to incorporate weather parameters into transportation models. Recent research on traffic weather interaction analysis conducted at the University of Regina, Canada reported traffic variations with cold temperatures and snowfall. The research team at the University of Regina proposed a linear association between snowfall and temperature to analyze the traffic variation on provincial highways during winter months. The variations were studies with the inclusion of the expected daily volume factor as an independent variable in the model structure. However, the study did not analyze the nature of the association between daily truck traffic volume and snowfall. Based on these drawbacks of the past studies, in this research, the objective is to focus on the effects of snow and temperature on traffic volume changes with a methodological help of Maximal Information Coefficient (MIC), which stems from the maximal information-based nonparametric exploration (MINE) statistics. The results obtained from the analysis indicate that the relationship between snow and truck traffic is non-linear. However, the study could not establish any functional relationship between snowfall and daily truck volume. It is desired to further conduct an hourly analysis to explore a new relationship between snowfall and truck volume.","PeriodicalId":89310,"journal":{"name":"WIT transactions on modelling and simulation","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84122485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Model Driven Interoperability for System Engineering 模型驱动的系统工程互操作性

WIT transactions on modelling and simulation Pub Date : 2020-10-15 DOI: 10.3390/modelling1020007

G. Zacharewicz, N. Daclin, G. Doumeingts, H. Haidar

{"title":"Model Driven Interoperability for System Engineering","authors":"G. Zacharewicz, N. Daclin, G. Doumeingts, H. Haidar","doi":"10.3390/modelling1020007","DOIUrl":"https://doi.org/10.3390/modelling1020007","url":null,"abstract":"To keep up to date, manufacturing enterprises need to use the latest results from the ICT sector, especially when collaborating with external partners in a supply chain and exchanging products and data. This has led to dealing with an increasing amount of heterogeneous information exchanged between partners including machines (physical means), humans and IT in the Supply Chain of ICT Systems (SC-ICTS). In this context, interoperability management is becoming more and more critical, but paradoxically, it is not yet fully efficiently anticipated, controlled and accompanied to recover from incompatibilities issues or failures. This paper intends to present how enterprise modeling, enterprise interoperability and model driven approaches can lead, together with system engineering architecture, to contribute to developing and improving the interoperability in the SC-ICTs. Model Driven System Engineering Architecture (MDSEA) is based on Enterprise Modeling using GRAI Model and its extensions. It gives enterprise internal developments guidelines, but originally, MDSEA is not the considering interoperability that is required between partners when setting a collaboration in the frame of SC-ICTS. As a result, the MDSEA, extended with interoperability concerns, led to the design of the MDISE (Model Driven Interoperability System Engineering) framework, which capitalizes on the research on enterprise interoperability. To finish, some proposals are made to extend the Model System Tool Box (MSTB) and the use of MDISE for Cyber Physical System (CPS) that are relevant components of SC-ICTS.","PeriodicalId":89310,"journal":{"name":"WIT transactions on modelling and simulation","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86139702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 27