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Discrete random variates with finite support using differential search trees Simulation (IF 1.6) Pub Date : 2024-03-16 Peter M Maurer
Differential search trees can be used for selection with replacement and for a form of selection without replacement. We show that they can be extended to many different types of selection, both with and without replacement. In addition, virtually every aspect of a differential search tree can be modified dynamically. We provide algorithms for making these modifications. Virtually all differential
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Enabling massively parallel, ad hoc exploration of the design space for simulation models within a serverless environment Simulation (IF 1.6) Pub Date : 2024-03-15 Andrew Gibson, Manuel D Rossetti
This paper presents a massively parallel, cloud-computing framework for the ad hoc evaluation of discrete-event simulation (DES) models to enable broad exploration of the design space for model parameters. Parallel evaluation is enabled through use of a serverless computing environment allowing thousands of simultaneous experiments, on demand, without the need to explicitly provision or manages hardware
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SynBPS: a parametric simulation framework for the generation of event-log data Simulation (IF 1.6) Pub Date : 2024-03-13 Mike Riess
In the pursuit of ecological validity, current business process simulation methods are calibrated to data from existing processes. This is important for realistic what-if analysis in the context of these processes. However, this is not always the “right tool for the job.” To test hypotheses in the area of predictive process monitoring, it can be more helpful to simulate event-log data from a theoretical
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A neural network approach for population synthesis Simulation (IF 1.6) Pub Date : 2024-03-11 Gregory Albiston, Taha Osman, David Brown
This work explores techniques and metrics applied to the process of population synthesis used in activity-based modeling for traffic and transport simulation. The paper presents a novel population synthesis approach based on applying artificial neural networks (ANNs) and evaluates the approach against techniques derived from iterative proportional fitting (IPF), Bayesian networks, and data sampling
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Corrigendum to “Effective numerical simulations of synchronous generator system” Simulation (IF 1.6) Pub Date : 2024-03-09
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Effective numerical simulations of synchronous generator system Simulation (IF 1.6) Pub Date : 2024-02-28 Jiawei Zhang, Aiqing Zhu, Feng Ji, Chang Lin, Yifa Tang
Synchronous generator system is a complicated dynamic system for energy transmission, which plays an important role in modern industrial production. In this article, we propose some predictor-corrector methods and structure-preserving methods for a generator system based on the first benchmark model of subsynchronous resonance, among which the structure-preserving methods preserve a Dirac structure
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Experimental evaluation of a machine learning approach to improve the reproducibility of network simulations Simulation (IF 1.6) Pub Date : 2024-02-22 Luke Liang, Hieu Phan, Philippe J Giabbanelli
A stochastic network simulation is verified when its distribution of outputs is aligned with the ground truth, while tolerating deviations due to variability in real-world measurements and the randomness of a stochastic simulation. However, comparing distributions may yield false positives, as erroneous simulations may have the expected distribution yet present aberrations in low-level patterns. For
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A network-based simulation framework for robustness assessment of accessibility in healthcare systems with the consideration of cascade failures Simulation (IF 1.6) Pub Date : 2024-02-17 Jiduo Xing, Shuai Lu
The accessibility of healthcare system is vulnerable to various types of hazards, where the failure of one system component may lead to a diffusion of the pressure and result in cascading failures. This study proposes a network-based simulation framework for robustness assessment of access to healthcare through integrating cascading failure mechanism. Weighted complex networks are constructed to model
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Integrating AI and DTs: challenges and opportunities in railway maintenance application and beyond Simulation (IF 1.6) Pub Date : 2024-02-17 Ruth Dirnfeld, Lorenzo De Donato, Alessandra Somma, Mehdi Saman Azari, Stefano Marrone, Francesco Flammini, Valeria Vittorini
In the last years, there has been a growing interest in the emerging concept of digital twin (DT) as it represents a promising paradigm to continuously monitor cyber–physical systems, as well as to test and validate predictability, safety, and reliability aspects. At the same time, artificial intelligence (AI) is exponentially affirming as an extremely powerful tool when it comes to modeling the behavior
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Simulation in engineering education: The transition from physical experimentation to digital immersive simulated environments Simulation (IF 1.6) Pub Date : 2024-02-09 Ashkan Negahban
Besides its use as a powerful systems analysis tool, simulation has also been used for decades in educational settings as a teaching and learning method. Simulation can replace or augment real-world inquiry-based experiences by providing learners with a low-cost and risk-free experimentation platform to develop knowledge and skills in a simulated environment. This paper presents an overview of current
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A co-simulation approach to onboard support of marine operation: a Palfinger crane path planning case Simulation (IF 1.6) Pub Date : 2024-02-09 Zizheng Liu, Yingguang Chu, Guoyuan Li, Hans Petter Hildre, Houxiang Zhang
Marine cranes are one of the most important industrial equipment in the maritime field. The base of a marine crane is dynamically moving as the motion of the ship’s six degrees of freedom that is affected by offshore environmental loads. There is a coupling between the crane and the ship, which means the crane operation and the ship motion affect each other. In this paper, co-simulation technology
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Formalizing a framework of inference capabilities for Digital Twin engineering Simulation (IF 1.6) Pub Date : 2024-01-31 Mama Diakité, Mamadou Kaba Traoré
Nowadays, smart systems require the use of Digital Twins (DTs) for their engineering and management. Self-updating capability is a key feature in the DT technology. This raises the challenge of model inference from data collected on the system and requires a formal framework be defined, in which a system representation can be coupled with inference methods to achieve automatic model updating. While
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Virtual reality–based simulation for assessing building fire safety design Simulation (IF 1.6) Pub Date : 2024-01-31 Rong Fu, Cheng Zhang, Ruizhe Kan, Yu Liu, Hyungjoon Seo
Spatial design greatly influences fire evacuation in buildings. Although existing works have comprehensively assessed building spatial design in terms of building circulation, they overlooked how the building layout and emergency signage system affect occupants’ attention allocation during fire emergencies. Therefore, this paper proposes a framework to investigate the effectiveness of building evacuation
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Adaptive hybrid reasoning for agent-based digital twins of distributed multi-robot systems Simulation (IF 1.6) Pub Date : 2024-01-31 Hussein Marah, Moharram Challenger
The digital twin (DT) mainly acts as a virtual exemplification of a real-world entity, system, or process via multiphysical and logical models, allowing the capture and synchronization of its functions and attributes. The bridge between the actual system and the digital realm can be utilized to optimize the system’s performance, and forecast and predict its behavior. Incorporating intelligent and adaptive
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Model design to investigate the role of augmented reality technology on contextual marketing: a system dynamics approach Simulation (IF 1.6) Pub Date : 2024-01-19 Hamid Reza Irani, Tooraj Karimi, Samira Shafiei
In E-commerce, one of the most essential reasons of company failures is conveying the right content of their product to the customers at the wrong time. This could include the company inability to adapt to their environment dynamically. With the existence of special circumstances like COVID-19 pandemic, companies require launching new techs, if they are to grow and stay competitive, and since the technology
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Data assimilation for online model calibration in discrete event simulation Simulation (IF 1.6) Pub Date : 2024-01-12 Xiaolin Hu, Mingxi Yan
The increasing availability of real-time data collected from dynamic systems brings opportunities for simulation models to be calibrated online for improving the accuracy of simulation-based studies. Systematical methods are needed for assimilating real-time measurement data into simulation models. This paper presents a particle filter-based data assimilation method to support online model calibration
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Framework for metamodel-based design optimization considering product performance and assembly process complexity Simulation (IF 1.6) Pub Date : 2024-01-04 Pavel Eremeev, Alexander De Cock, Hendrik Devriendt, Frank Naets
This paper proposes a method for simultaneous evaluation of the assembly process complexity together with the performance of the future product. It allows for product design optimization, considering different aspects of the future design at the early stage of the development process. The proposed method, embodied in a fully automated framework, substitutes the traditional sequential development process
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Construction and application of a simulation optimization model of auxiliary guidance signs in enclosed public places Simulation (IF 1.6) Pub Date : 2024-01-03 Jun Ma, Chunbei Xiao, Jun Hu
Many enclosed public spaces with multiple destinations often feature obstacles, such as columns within the building space and dense crowds, which adversely affect the recognition and guidance of pedestrian sign. To mitigate this issue, enhancing traffic efficiency necessitates the implementation of auxiliary guidance signs. However, experience-based schemes for positioning these signs often require
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Fluid initialization and dynamic window for smoothed-particle hydrodynamics simulation Simulation (IF 1.6) Pub Date : 2024-01-03 Samuel Carensac, Nicolas Pronost, Saida Bouakaz
Fluid simulation is an essential tool to produce realistic looking animations. In particular, Lagrangian simulations offer interactive computation times with an easy integration of the two-way interaction with rigid bodies. However, the interactivity is lost for larger scenes even if only the areas around the bodies have any visual interest. In this paper, we present a novel approach to quickly initialize
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Integrated analysis of employee cooperation and conflict behaviors in the context of digital technology Simulation (IF 1.6) Pub Date : 2023-05-09 Bin Hu, Yuxiao Du
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...
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Effects of workload on medication administration errors in nursing: an analysis based on system dynamics modeling Simulation (IF 1.6) Pub Date : 2023-04-26 Haizhe Jin, Zhibin Xiao, Junhan Yao, Zibo Gong, Haiying Wang, Yinan Zhao
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 am...
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Multiobjective building design optimization using an efficient adaptive Kriging metamodel Simulation (IF 1.6) Pub Date : 2023-04-26 Salma Lahmar, Mostafa Maalmi, Rachida Idchabani
Multiobjective building design optimization is a challenging problem because it involves finding a set of solutions that simultaneously optimize multiple conflicting objectives. Simulations-based o...
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The airflow distribution and aerosol diffusion rules in the negative pressure isolation ward Simulation (IF 1.6) Pub Date : 2023-04-26 Shanbi Peng, Xue Luo, Bin Yu, Li Huang, Enbin Liu
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 wit...
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A fine grid cellular automaton model for pedestrian evacuation considering the effect of an obstacle Simulation (IF 1.6) Pub Date : 2023-04-05 Xiao-Ting Yuan, Tie-Qiao Tang, Liang Chen, Tao Wang
A cellular automaton (CA) model with a finer discretization of space is proposed to simulate a non-emergency evacuation process in a room with an obstacle. During the evacuation process, a triangle...
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Inverse kinematic model of multi-section continuum robots using particle swarm optimization and comparison to four meta-heuristic approaches Simulation (IF 1.6) Pub Date : 2023-03-31 Selman Djeffal, Chawki Mahfoudi
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 optimizatio...
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Development of deep-learning models for a hybrid simulation of auscultation training on standard patients using an ECG-based virtual pathology stethoscope Simulation (IF 1.6) Pub Date : 2023-03-29 Haben Yhdego, Nahom Kidane, Frederick Mckenzie, Michel Audette
Cardiac auscultation (CA), the act of listening to the heart’s sound, is a critical skill that provides valuable information for identifying serious heart diseases. Proficiency in cardiac auscultat...
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Face-based smoothed finite element method for simulating the sound field of a high-speed train Simulation (IF 1.6) Pub Date : 2023-03-29 Songhua Huang, Yugong Xu, Zhaoxin Liu, Weiyuan Dou, Lele Zhang
Simulating three-dimensional acoustic problems with traditional finite element models (FEMs) may result in a large dispersion error that is difficult to manage. To control dispersion error caused b...
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A logic-based event controller for means-end reasoning in simulation environments Simulation (IF 1.6) Pub Date : 2023-03-24 Audun Stolpe, Ivar Rummelhoff, Jo Erskine Hannay
Simulation games are designed to cultivate expertise and rehearse particular skill sets. To yield longitudinal effects, sequences of events must be crafted to yield intended learning outcomes, some...
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Synchronous speculative simulation of tightly coupled agents in continuous time on CPUs and GPUs Simulation (IF 1.6) Pub Date : 2023-03-21 Philipp Andelfinger, Adelinde M Uhrmacher
Traditionally, parallel discrete-event simulations of agent-based models in continuous time are organized around logical processes exchanging time-stamped events, which clashes with the properties ...
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Spatial iterative coordination for parallel simulation-based optimization of large-scale traffic signal control Simulation (IF 1.6) Pub Date : 2023-03-17 Wen Jun Tan, Philipp Andelfinger, Wentong Cai, David Eckhoff, Alois Knoll
Applying simulation-based optimization to city-scale traffic signal optimization can be challenging due to the large search space resulting in high computational complexity. A divide-and-conquer ap...
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A quantitative simulation–based modeling approach for college counseling centers Simulation (IF 1.6) Pub Date : 2023-03-17 Sohom Chatterjee, Youssef Hebaish, Lewis Ntaimo, James Deegear, Miles Rucker, Hrayer Aprahamian
College counseling centers in various universities have been tasked with the important responsibility of attending to the mental health needs of their students. Owing to the unprecedented recent su...
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Discrete event simulation of vessel stationkeeping operations in ice-rich waters Simulation (IF 1.6) Pub Date : 2023-03-14 Wayne Pearson, Mohammed Islam, Michael Lau, Robert Gash, Jason Mills
This paper describes a high-fidelity numerical model that simulates vessel stationkeeping operations in ice-rich waters. The discrete event simulation engine incorporates several novel features, in...
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Network performance estimator with applications to route selection for IoT multimedia applications Simulation (IF 1.6) Pub Date : 2023-02-24 Fabiano Bhering, Diego Passos, Katia Obraczka, Célio Albuquerque
Estimating the performance of multimedia (MM) traffic is important in numerous contexts, including routing and forwarding, quality of service (QoS) provisioning, and adaptive video streaming. This ...
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A methodological approach for modeling the spread of disease using geographical discrete-event spatial models Simulation (IF 1.6) Pub Date : 2023-02-14 Glenn Davidson, Aidan Fahlman, Eric Mereu, Cristina Ruiz Martin, Gabriel Wainer, Peter Dobias, Mark Rempel
The study of infectious disease models has become increasingly important during the COVID-19 pandemic. The forecasting of disease spread using mathematical models has become a common practice by pu...
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Ad hoc HLA simulation model derived from a model-based traffic scenario Simulation (IF 1.6) Pub Date : 2023-02-08 David Reiher, Axel Hahn
Modern highly automated and autonomous traffic systems and sub-systems require new approaches to test their functional safety in the context of validation and verification. One approach that has ta...
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Computational fluid dynamics simulation of airborne COVID transmission in urban bus with different HVAC configurations Simulation (IF 1.6) Pub Date : 2023-01-28 Damian Ramajo, Santiago Corzo
The HVAC systems in closed buses promote high particle spread. Lagrangian particle tracking simulations were carried out to evaluate airborne COVID transmission through droplets emitted by sneezing...
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Low-latency GNSS multipath simulation and building wall detection in urban environments Simulation (IF 1.6) Pub Date : 2023-01-20 Marcus O’Connor, Tobias Kersten, Christian Skupin, Fabian Ruwisch, Le Ren, Temmo Wübbena, Steffen Schön
Precise navigation for fully autonomous driving—especially in dense urban areas—requires periodic precise position estimates. Global Navigation Satellite System (GNSS) technology has the potential ...
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A formal GSPN model of a virtual doctor dialogue system Simulation (IF 1.6) Pub Date : 2023-01-18 Nikolaos Bourbakis, Stavros Mallios
This paper presents a formal generalized stochastic Petri net (GSPN)–based modeling of a virtual doctor (VDr) dialogue system. The interaction model between the VDr dialogue system and the human pa...
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DP in ice environments—development of a dynamic positioning in ice validation platform (DPIVP) Simulation (IF 1.6) Pub Date : 2023-01-12 Jason Mills, Mohammed Islam, Wayne Pearson, Bob Gash
This paper presents the development of a dynamic positioning in ice validation platform (DPIVP) which is part of a larger research project aimed at developing dynamic positioning (DP) system techno...
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Stair/escalator/elevator selection behavior of passengers in subway stations based on the fuzzy logic theory Simulation (IF 1.6) Pub Date : 2023-01-12 Rui Zhang, Xiaoxia Yang, Meiqi Zhou, Yongxing Li, Xiaoli Yang
The behavior of stair/escalator/elevator selection of passengers at the subway platform could directly affect the travel efficiency and even the service level of the station. This paper proposes a ...
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Proposal of a module-driven architecture for building simulation models devoted to container terminals: dilemmas in applying generic, flexible, and modular principles Simulation (IF 1.6) Pub Date : 2023-01-12 Mohamed Nezar Abourraja, Nicole Kringos, Sebastiaan Meijer
Container terminals are complex systems where containerized cargo undergoes a set of processing and handling operations to be delivered to their outgoing modes. A pool of decision support methods a...
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Particle filter–based data assimilation in dynamic data-driven simulation: sensitivity analysis of three critical experimental conditions Simulation (IF 1.6) Pub Date : 2022-12-26 Yilin Huang, Xu Xie, Yubin Cho, Alexander Verbraeck
Data assimilation (DA) is a methodology widely used by different disciplines of science and engineering. It is typically applied to continuous systems with numerical models. The application of DA t...
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Simulation modelling of hospital outpatient Department: a review of the literature and bibliometric analysis Simulation (IF 1.6) Pub Date : 2022-12-22 Aby M Philip, Shanmugam Prasannavenkatesan, Navonil Mustafee
The increase in demand for outpatient departments (OPDs) has contributed to overcrowded clinics and patient dissatisfaction. Computer simulation can help decision-makers meet the operational challe...
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Simulation-driven experimental hypotheses and design: a study of price impact and bubbles Simulation (IF 1.6) Pub Date : 2022-12-13 Francesco Cordoni, Caterina Giannetti, Fabrizio Lillo, Giulio Bottazzi
A crucial aspect of every experiment is the formulation of hypotheses prior to data collection. In this paper, we use a simulation-based approach to generate synthetic data and formulate the hypoth...
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Simulation of luggage-laden passengers’ behavior in the evacuation process based on a floor field CA model case study: Tehran metro-rail transfer corridor Simulation (IF 1.6) Pub Date : 2022-12-10 Fatemeh Jahedinia, Morteza Bagheri, Ali Naderan, Zahra Bahramian
Passengers’ safety against unexpected incidents such as rail stations’ fire accidents is essential in the safety field. The presence of luggage with passengers occupies extra space, diminishes pass...
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A discrete simulation-based optimization approach for multi-period redeployment in emergency medical services Simulation (IF 1.6) Pub Date : 2022-12-09 Lina Aboueljinane, Evren Sahin, Zied Jemai
Emergency Medical Service (EMS) managers continuously strive to improve the coverage performance, i.e., the percentage of calls responded to within a specific target time, to save lives in case of ...
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Simulation study on the influence of wheel irregularity on the vertical dynamics of wheel–rail interaction for high-speed railway track using bond graph Simulation (IF 1.6) Pub Date : 2022-12-01 Yamika Patel, Vikas Rastogi, Wolfgang Borutzky
Dynamic interaction between train wheel and high-speed slab is an important issue when evaluating the contact force at the wheel–rail interface under the influence of an irregularity either on the ...
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Multi-Objective Patient Appointment Scheduling Framework (MO-PASS): a data-table input simulation–optimization approach Simulation (IF 1.6) Pub Date : 2022-11-28 Mohammad Dehghanimohammadabadi, Mandana Rezaeiahari, Javad Seif
Appointment scheduling is one of the critical factors for improving patient satisfaction with healthcare services. A practical and robust appointment scheduling solution allows clinics to efficient...
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Simulation modeling assessment and improvement of a COVID-19 mass vaccination center operations Simulation (IF 1.6) Pub Date : 2022-11-19 Abdessalem Jerbi, Faouzi Masmoudi
The development of safe and effective vaccines against COVID-19 has been a turning point in the international effort to control this disease. However, vaccine development is only the first phase of...
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Modeling and interactive simulation of measures against infection transmission Simulation (IF 1.6) Pub Date : 2022-11-19 Mina Abadeer, Sameh Magharious, Sergei Gorlatch
In this paper we develop an approach to modeling and simulating the process of infection transmission among individuals and the effectiveness of protective counter-measures. We base our approach on...
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Combination of anti-PD-L1 and radiotherapy in hepatocellular carcinoma: a mathematical model with uncertain parameters Simulation (IF 1.6) Pub Date : 2022-11-19 Sajad Shafiekhani, Nematollah Gheibi, Azam Janati Esfahani
Blockade of programmed death-ligand-1 (PD-L1) as a new method of immunotherapy for cancers has shown limited efficacy in hepatocellular carcinoma (HCC). The combination of anti-PD-L1 and radiothera...
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HLA-based time management and synchronization framework for lean manufacturing tools evaluation Simulation (IF 1.6) Pub Date : 2022-11-19 Jalal Possik, Gregory Zacharewicz, Anne Zouggar, Bruno Vallespir
Discrete event simulation (DES) is a method for digitally replicating the behavior and performance of real-world processes, systems, and facilities. DES is widely applied in manufacturing, logistic...
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Race conditions and data partitioning: risks posed by common errors to reproducible parallel simulations Simulation (IF 1.6) Pub Date : 2022-11-19 James Nutaro, Ozgur Ozmen
When parallel algorithms for simulation were introduced in the 1970s, their development and use interested only experts in parallel computation. This circumstance changed as multi-core processors b...
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In silico analysis of optimum photon energy spectra and beam parameters for iodine nanoparticle–aided orthovoltage radiation therapy of brain tumors Simulation (IF 1.6) Pub Date : 2022-11-18 Asghar Mesbahi, Maryam Sadeghian, Aisan Mesbahi, Henry M Smilowitz, James F Hainfeld
In this study, the effect of photon energy spectra on the dose enhancement factor (DEF) and other influencing parameters such as skull–tumor dose ratios were estimated for a confined tumor loaded w...
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TRAILS mobility model Simulation (IF 1.6) Pub Date : 2022-11-14 Leonardo Sarmiento, Anna Förster
According to state-of-the-art research, mobile network simulation is preferred over real testbeds, especially to evaluate communication protocols used in Opportunistic Networks (OppNet) or Mobile A...
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Modeling and simulation of a multistage heat recovery steam generator Simulation (IF 1.6) Pub Date : 2022-11-09 Jonathan McConnell, Tuhin Das, Andres Caesar, Prithvi Veeravalli
As the share of renewable energy increases in modern power grids, their inherent intermittency compels existing thermal power plants to become more agile and flexible in their operation. To achieve...
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Simulation of disequilibrium and chaos in aggregates of disposable income, wealth, and consumption in EU macroeconomics using nonlinear dynamic analysis Simulation (IF 1.6) Pub Date : 2022-10-29 Damir V Sindik, Vladimir Kašćelan, Ljiljana Kašćelan
Economic disequilibrium theory (DT) more realistically represents modern macroeconomic systems than general equilibrium theory. DT coupled with applied mathematical economics and nonlinear dynamica...
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Improved methodology for assessment of communication protocols for distributed road traffic simulation Simulation (IF 1.6) Pub Date : 2022-10-08 Tomas Potuzak
A computer simulation of road traffic is a commonly used tool, which can help to manage constantly intensifying road traffic. It can help to analyze behavior of existing road traffic networks or to...
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The role of latent representations for design space exploration of floorplans Simulation (IF 1.6) Pub Date : 2022-09-06 Vahid Azizi, Muhammad Usman, Samuel S Sohn, Mathew Schwartz, Seonghyeon Moon, Petros Faloutsos, Mubbasir Kapadia
Floorplans often require considering numerous factors, from the layout size to cost, numeric attributes such as room sizes, and other intrinsic properties such as connectivity between visible regio...
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Simulating invisible light: a model for exploring radiant cooling’s impact on the human body using ray tracing Simulation (IF 1.6) Pub Date : 2022-09-06 Dorit Aviv, Miaomiao Hou, Eric Teitelbaum, Forrest Meggers
Radiant systems are an energy-efficient method for providing cooling to building occupants through active surfaces. To assess the impact of the radiant environment on occupants in space, we develop...