Simulation-Transactions of the Society for Modeling and Simulation International最新文献_第3页

Modeling of drill string dynamics in directional wells for real-time simulation 面向实时仿真的定向井钻柱动力学建模

IF 1.6 4区工程技术

Simulation-Transactions of the Society for Modeling and Simulation International Pub Date : 2023-06-16 DOI: 10.1177/00375497231175927

N. Tengesdal, Gaute Fotland, C. Holden, Bjørn Haugen

{"title":"Modeling of drill string dynamics in directional wells for real-time simulation","authors":"N. Tengesdal, Gaute Fotland, C. Holden, Bjørn Haugen","doi":"10.1177/00375497231175927","DOIUrl":"https://doi.org/10.1177/00375497231175927","url":null,"abstract":"Simple and computationally efficient drill string models running real-time describing motion in all axes in directional wells are important for the implementation of closed-loop control and assisted monitoring during drilling operations. This paper proposes a new simplified three-dimensional model based on a parametric curve and lumped-parameter modeling, where Kane’s method is used to establish the equations of motion. Validation of the steady-state motion and convergence for the lumped model in vertical and horizontal alignment was compared with a finite-element model. The configuration and restoring forces show good results compared with finite-element analysis. Hence, the model demonstrate the axial contraction as a function of the body restoring forces being oriented to the inertial frame, inherently producing nonlinear coupled axial tension forces. The qualitative response of the model is confirmed in simulation case studies, being showcased by a deviated J-well configuration. Traveling block velocity and top drive torque are included as actuated inputs to analyze off-bottom friction and contact along the wellbore. The model is proposed to act as a virtual sensor for drilling directional wells.","PeriodicalId":49516,"journal":{"name":"Simulation-Transactions of the Society for Modeling and Simulation International","volume":"38 1","pages":"937 - 956"},"PeriodicalIF":1.6,"publicationDate":"2023-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77074377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Agent-based epidemics simulation to compare and explain screening and vaccination prioritization strategies 基于主体的流行病模拟，以比较和解释筛查和疫苗接种优先策略

4区工程技术

Simulation-Transactions of the Society for Modeling and Simulation International Pub Date : 2023-06-14 DOI: 10.1177/00375497231178303

Carole Adam, Hélène Arduin

引用次数: 0

Knowledge-based and data-driven behavioral modeling techniques in engagement simulation 交战模拟中基于知识和数据驱动的行为建模技术

IF 1.6 4区工程技术

Simulation-Transactions of the Society for Modeling and Simulation International Pub Date : 2023-06-12 DOI: 10.1177/00375497231177123

Zhi Zhu, Tao Wang, H. Sarjoughian, Weiping Wang, Yuehua Zhao

{"title":"Knowledge-based and data-driven behavioral modeling techniques in engagement simulation","authors":"Zhi Zhu, Tao Wang, H. Sarjoughian, Weiping Wang, Yuehua Zhao","doi":"10.1177/00375497231177123","DOIUrl":"https://doi.org/10.1177/00375497231177123","url":null,"abstract":"As knowledge and data increase in scale and complexity, it is more difficult to apply these two key assets to achieve optimal effectiveness in engagement simulation. The aim of this study was to investigate the techniques of knowledge and data integration with respect to the development of smart agents to predict accurate behaviors in tactical engagements. To reduce the complexity of combat behavior representation, with respect to the functions, we represented subject matter expert operational knowledge by proposing multiple levels of cascaded hierarchical structure, namely, the function decision tree, to increase the readability and maintainability of the behavioral model. For decision points in a behavioral model, smart agents can be trained based on data samples collected from rounds of constructive simulations which provide validated physical models and tactical principles. As a proof of concept, we constructed a simulation testbed of multi-warhead ballistic missile penetration, which generated 129,600 constructive simulations over a total of 84 h. Thereafter, we selected 5817 data samples (i.e. ~4.5% of the simulations) using an operational metric of total rewards exceeding 100. The data samples are used to train an artificial neural network and then this network is used to develop a deep reinforcement learning agent. The results revealed that the training process iterated nearly 17,000 epochs until the policy loss decreased to an acceptable low value. The smart agent increased the ratio of ballistic missile target hits by 18.96%, a significant increase when compared with the traditional rule-based behavioral model.","PeriodicalId":49516,"journal":{"name":"Simulation-Transactions of the Society for Modeling and Simulation International","volume":"19 1","pages":"1069 - 1089"},"PeriodicalIF":1.6,"publicationDate":"2023-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87590940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Integrated analysis of employee cooperation and conflict behaviors in the context of digital technology 数字技术背景下员工合作与冲突行为的综合分析

IF 1.6 4区工程技术

Simulation-Transactions of the Society for Modeling and Simulation International Pub Date : 2023-05-09 DOI: 10.1177/00375497231171138

B. Hu, Yuxiao Du

{"title":"Integrated analysis of employee cooperation and conflict behaviors in the context of digital technology","authors":"B. Hu, Yuxiao Du","doi":"10.1177/00375497231171138","DOIUrl":"https://doi.org/10.1177/00375497231171138","url":null,"abstract":"Nowadays, the introduction of digital technology improves the condition of the workplace and employees’ productivity, but the unstable behavior of employees is still typical in Internet enterprises in China. Sometimes, employees frequently show their behavior reversals between cooperation and conflict. An integrated analysis method with three steps is performed to explore its reason. First, an evolutionary game model is employed to examine the strategies of individual employee’s behavior selection between cooperation and conflict. Second, the cellular automata are developed to simulate the evolution of employee group behavior selection over time. The frequent behavior turnovers between cooperation and conflict are illustrated. Third, catastrophe theory and method are used to identify the hidden cusp catastrophe patterns under the evolution of group behavior selection. Research results reveal that individual employee selects cooperation if the penalty exceeds half the cost. Simulation results show intense and sudden changes in employee group behavior selection, in which cusp catastrophe patterns exist. The cusp catastrophe model can intuitively interpret the mechanism by which factors, such as average perceived payoff and proportion of cooperation employees, influence the behavior state of the employee group. The mechanism of catastrophe in frequent behavior turnover is explored. This methodology, which is based on the theoretical framework of social exchange theory, integrates evolutionary game theory, simulation, and catastrophe theory to identify the catastrophe mechanism in behavior turnover and make theoretical and practical contributions to behavior selection research.","PeriodicalId":49516,"journal":{"name":"Simulation-Transactions of the Society for Modeling and Simulation International","volume":"128 1","pages":"969 - 985"},"PeriodicalIF":1.6,"publicationDate":"2023-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88046778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of workload on medication administration errors in nursing: an analysis based on system dynamics modeling 工作量对护理用药错误的影响:基于系统动力学模型的分析

IF 1.6 4区工程技术

Simulation-Transactions of the Society for Modeling and Simulation International Pub Date : 2023-04-26 DOI: 10.1177/00375497231168631

H. Jin, Zhibin Xiao, Junhan Yao, Zibo Gong, Haiying Wang, Yinan Zhao

{"title":"Effects of workload on medication administration errors in nursing: an analysis based on system dynamics modeling","authors":"H. Jin, Zhibin Xiao, Junhan Yao, Zibo Gong, Haiying Wang, Yinan Zhao","doi":"10.1177/00375497231168631","DOIUrl":"https://doi.org/10.1177/00375497231168631","url":null,"abstract":"Medication administration errors account for a relatively high proportion of medical errors, with more than 50% occurring at the nursing administration stage. Nursing is characterized by a large amount of work, rigid working hours, high information cognitive intensity, and frequent information updates. The high workload of nurses is a significant cause of medication administration errors. In this study, a literature analysis was used to determine the elements of the system dynamics model, and the causal loop diagram was used to draw the relationship framework among the elements. Vensim personal learning edition and interview surveys were then used for model validation and simulation. First, 302 case analyses of medication administration errors collected from the three metropolitan area hospitals were used to construct the causal loop diagram, the stock and flow map of the medication administration error system, and the dynamics model; second, the model was tested from theoretical and historical data simulation perspectives; finally, the system dynamics model proposed in this study was used to simulate a medical institution from overtime and policy perspectives. Through system dynamics modeling, the inducing mechanism of workload on medication administration errors in nursing operations was elucidated, and corresponding suggestions for prevention were provided. In addition, ideas and basis for optimizing the medication administration process, improving workload, and preventing medication administration errors considering workload were provided.","PeriodicalId":49516,"journal":{"name":"Simulation-Transactions of the Society for Modeling and Simulation International","volume":"29 1","pages":"885 - 902"},"PeriodicalIF":1.6,"publicationDate":"2023-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77590397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The airflow distribution and aerosol diffusion rules in the negative pressure isolation ward 负压隔离病房内气流分布及气溶胶扩散规律

IF 1.6 4区工程技术

Simulation-Transactions of the Society for Modeling and Simulation International Pub Date : 2023-04-26 DOI: 10.1177/00375497231168628

Shanbi Peng, Xue Luo, Bin Yu, Li Huang, Enbin Liu

{"title":"The airflow distribution and aerosol diffusion rules in the negative pressure isolation ward","authors":"Shanbi Peng, Xue Luo, Bin Yu, Li Huang, Enbin Liu","doi":"10.1177/00375497231168628","DOIUrl":"https://doi.org/10.1177/00375497231168628","url":null,"abstract":"Negative pressure wards are significant in preventing the spread of infectious pathogens which play a crucial role in fighting against COVID-19. Owing to the negative pressure, contaminated air with pathogens is not able to flow from the wards to non-contaminated zones while fresh filtered air will be transported to the ward via the ventilation system. As airflow controlled by ventilation systems affects the motion of pathogens, for example, infectious aerosol particles, the ability of a negative pressure ward to reduce the risk of infection highly relies on an effective ventilation system. In this investigation, impacts of airflow patterns under various human postures and ventilation processes aerosols diffusion are analyzed via the computational fluid dynamics (CFD) simulation. According to the results, among three airflow patterns, the highest contaminant removal efficiency is 57% at 200 s with the top supply and bottom return mode; besides, in three postures, in the case that the patient is in a standing position, the contaminant removal efficiency is the highest. Furthermore, it is found that the best airflow scheme is a slit tuyere in the ward, with a top supply and side return mode and a sitting position for the patient. This study may provide a reference for the design of airflow in negative pressure isolation wards, control of contaminants, and prevention of viral infections, so as to ensure a good working and recovery environment for medical staff and patients.","PeriodicalId":49516,"journal":{"name":"Simulation-Transactions of the Society for Modeling and Simulation International","volume":"16 1","pages":"917 - 936"},"PeriodicalIF":1.6,"publicationDate":"2023-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75885817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Multiobjective building design optimization using an efficient adaptive Kriging metamodel 基于高效自适应Kriging元模型的多目标建筑设计优化

IF 1.6 4区工程技术

Simulation-Transactions of the Society for Modeling and Simulation International Pub Date : 2023-04-26 DOI: 10.1177/00375497231168630

Salma Lahmar, M. Maalmi, R. Idchabani

{"title":"Multiobjective building design optimization using an efficient adaptive Kriging metamodel","authors":"Salma Lahmar, M. Maalmi, R. Idchabani","doi":"10.1177/00375497231168630","DOIUrl":"https://doi.org/10.1177/00375497231168630","url":null,"abstract":"Multiobjective building design optimization is a challenging problem because it involves finding a set of solutions that simultaneously optimize multiple conflicting objectives. Simulations-based optimization is widely used, but it is a computationally expensive process in terms of time, as it requires a large number of evaluations of the objective functions. Metamodel-based optimization is an alternative to reduce the time-consuming simulations during the optimization process. Metamodels can approximate the building simulation model with analytical expressions. However, the accuracy of metamodels depends on the number of simulations used to train the model and the sampling strategy used to select informative samples over the design space. This study proposes an efficient sequential sampling approach to fit the metamodels toward the regions of the design space where their accuracy is higher and can improve all objectives simultaneously. To demonstrate the effectiveness of this approach, it was applied to optimize the energy and investment costs of a multi-story residential building. The optimization results were compared with those obtained using a non-dominated sorted genetic algorithm II (NSGA-II). The results of this study show that the proposed method reduces the number of building energy simulations required by up to 50% while guaranteeing accurate optimization results. Fifteen energy-efficient buildings designs were proposed, with a wide range of trade-offs between energy and investment costs. This study highlights the potential of the proposed approach to achieve faster and accurate building design optimization and allowing for a larger design space, leading to more creative and innovative solutions.","PeriodicalId":49516,"journal":{"name":"Simulation-Transactions of the Society for Modeling and Simulation International","volume":"1 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2023-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84449152","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

A fine grid cellular automaton model for pedestrian evacuation considering the effect of an obstacle 考虑障碍物影响的行人疏散的细网格元胞自动机模型

IF 1.6 4区工程技术

Simulation-Transactions of the Society for Modeling and Simulation International Pub Date : 2023-04-05 DOI: 10.1177/00375497231161146

Xiao-Ting Yuan, Tie-Qiao Tang, Liang Chen, Tao Wang

引用次数: 0

Inverse kinematic model of multi-section continuum robots using particle swarm optimization and comparison to four meta-heuristic approaches 基于粒子群优化的多段连续体机器人运动学逆模型及其与四种元启发式方法的比较

IF 1.6 4区工程技术

Simulation-Transactions of the Society for Modeling and Simulation International Pub Date : 2023-03-31 DOI: 10.1177/00375497231164645

S. Djeffal, Chawki Mahfoudi

{"title":"Inverse kinematic model of multi-section continuum robots using particle swarm optimization and comparison to four meta-heuristic approaches","authors":"S. Djeffal, Chawki Mahfoudi","doi":"10.1177/00375497231164645","DOIUrl":"https://doi.org/10.1177/00375497231164645","url":null,"abstract":"Multi-section continuum robots’ (CRs) behavior is still an outstanding problem because of the highly non-linearity of its equation of motions. To this end, in this paper, particle swarm optimization (PSO) is adopted to solve the inverse kinematic model (IKM) of CRs. First, the CR’s structure is properly described. Then, the aforementioned algorithm is elaborately discussed and implemented in figuring out the IKM of CR and verified through forward kinematic model by choosing the PSO parameters, namely, cognitive factors ( C 1 = C 2 = 1 . 2 ) and inertia weight ( ω = 0 . 79 ) for 200 positions on an arc-like trajectory. The optimal angle values ( θ = 0 . 0346 and φ = 0 . 00013 ) which ensure the lowest distance between the attainably desired position and the robot’s end effector are 1 . 04497 × 10 − 9 mm which is perfectly accurate. After that, simulation through MATLAB is carried out, namely, in the first simulation, a three-section CR follows a linear trajectory with a precision approximately equal to 0 . 75 × 10 − 9 mm . Furthermore, PSO takes 7 ms as a mean consumption time to make the robot’s end effector attain to each position. Then, a circular trajectory is followed using PSO. Comparatively speaking, PSO is compared with four meta-heuristic approaches; it is remarked that PSO is a good compromise between accuracy and time consumption. Based on the obtained results, PSO can be considered as a trade-off between accuracy and time consumption for solving the IKM of CRs with complex structure.","PeriodicalId":49516,"journal":{"name":"Simulation-Transactions of the Society for Modeling and Simulation International","volume":"23 1","pages":"817 - 830"},"PeriodicalIF":1.6,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81541507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Face-based smoothed finite element method for simulating the sound field of a high-speed train 基于人脸的高速列车声场模拟的光滑有限元方法

IF 1.6 4区工程技术

Simulation-Transactions of the Society for Modeling and Simulation International Pub Date : 2023-03-29 DOI: 10.1177/00375497231163642

Songhua Huang, Yugong Xu, Zhaoxin Liu, W. Dou, Lele Zhang

引用次数: 1