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22nd international conference on Modeling and applied simulation, MAS 2023

作者： Manfredi, Karen A. Nervoso, Antonio Solis, Adriano O. Longo, Francesco University of Calabria DIMEG Via P. Bucci Rende87036 Italy York University School of Administrative Studies 4700 Keele St. TorontoONM3J 1P3 Canada

ISBN: (纸本)9788885741928

This paper reports on an investigation of printed circuit board (PCB) assembly operations in the main manufacturing plant of a Canadian company which produces and delivers electronic products used in industrial, commercial, condominium (multi-residential), and other building applications. It delves into the complexities of the plant’s PCB assembly processes, which start with a section in which many components are first introduced using surface mount technology, followed by a second section in which other components are inserted into PCB through-holes. modelling and simulation of these and subsequent sections of the manufacturing facility’s PCB assembly operations allow the evaluation of various alternatives that may be considered to improve operating performance. For instance, the advantages and disadvantages of manual versus automated through-hole insertion are weighed. Additionally, the study reveals valuable insights into operator allocation strategies, aiming to optimize production efficiency and reduce processing times. © 2023 The Authors.

关键词： Printed circuit boards

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Melt azimuthal rotation in direct current electric arc furnace without external axial magnetic field

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international JOURNAL OF applied ELECTROMAGNETICS AND MECHANICS 2024年第2期75卷 145-157页

作者： Pavlovs, Sergejs Jakovics, Andris Chudnovsky, Alexander Univ Latvia Inst Numer Modelling 3 Jelgavas St LV-1004 Riga Latvia LATVO JSC Riga Latvia

This paper considers the azimuthal rotation of melt about the vertical axis of a DC EAF, which is ensured by an inclined installation of the power supply electrodes, which is a patented solution that is the basis for this article. Near inclined electrodes, the Lorentz force has a pronounced azimuthal component, which is the driver of the melt rotation without an external axial magnetic field - thus, additional energy consumption to create an external magnetic field is not necessary. The main design and technological solutions, formulated in the patent and presented by the authors, were obtained using observations and numerical LES study for a laboratory-scale experimental setup (capacity 4.8 kg of GaInSn), as well as using LES computations for an industrial-scale DC EAF (capacity 3.6 t of molten steel). Basic technological solutions studied: the flow of the melt may be controlled by varying the number of vertical and inclined electrodes of DC EAF, choosing the angle of inclination of the electrodes as well as choosing the sequence of turning on and turning off power supply through the electrodes.

关键词： Direct current (DC) electric arc furnace (EAF) electro-vortex flow (EVF) large eddy simulation (LES) melt rotation external magnetic field

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Assessing the Effect of Citizens' Behaviour in Textile Waste Separate Collection: An Agent-based simulation Model 23

Assessing the Effect of Citizens' Behaviour in Textile Waste...

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23rd international conference on modelling and applied simulation, MAS 2024

作者： Mercogliano, Nicola Zammori, Francesco Castellano, Davide Romagnoli, Giovanni Università Degli Studi di Modena Reggio Emilia Dipartimento di Ingegneria Enzo Ferrari Via Pietro Vivarelli 10 Modena41125 Italy Università Degli Studi di Parma Dipartimento di Ingegneria Dei Sistemi e Delle Tecnologie Industriali Parco Area delle Scienze 181/A Parma43124 Italy

ISBN: (纸本)9791281988019

The purpose of this research is to analyse the impact of citizens' behaviours on the efficiency of textile waste separate collection systems within the framework of a circular economy. Using AnyLogic software, we model a municipal district where citizens might or not dispose of used clothes in designated roadside bins. The simulation explores two main aspects: the impact of citizens' behaviours and their mutual influence on system performance, as well as how service levels affect behaviour modification. Key findings reveal that citizen interactions significantly influence the system's efficiency, with higher bin and truck capacities leading to improved outcomes. However, a lack of environmental awareness among citizens adversely impacts the system. This study's novel contribution lies in demonstrating that mutual influence among citizens is a critical factor for an effective textile waste separate collection system. The value of this work is underscored by its alignment with EU Strategies for Sustainable and Circular Textiles, emphasizing the crucial importance of separate collection for achieving circularity in the textile industry. Policymakers and waste collectors should promote sustainable behaviours to optimize service performance and environmental benefits, ensuring compliance with upcoming EU regulations aimed at fostering a circular economy. © 2024 The Authors.

关键词： Circular economy

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Applying Software Product Line Techniques to an Integrated Circuit System modelling Framework: An Experience Report 24

Applying Software Product Line Techniques to an Integrated C...

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28th international Systems and Software Product Line conference (SPLC)

作者： Feichtinger, Mark Muehlmann, Ulrich NXP Semicond Austria Gratkorn Austria

ISBN: (纸本)9798400705939

Integrated circuits (ICs) are an integral part of modern electronic hardware devices. The design cycle for ICs is getting shorter and shorter as the market demands new generations of ICs that are more reliable, use less energy and are equipped with new functionalities. Additionally, only a single, first-time-right, tape-out is targeted in the design cycle to save high production costs. That means that all effort needs to be put on model-based system design and verification far before the IC enters production, validation, and customer release. As a key requirement, the IC models must predict the performance and the behavior of the IC more accurately and all possible failure modes must be identified and eliminated upfront. In this short paper, we describe how we applied Software Product Line (SPL) techniques to our existing IC model simulation framework to support these challenges. Utilizing SPL, we split the simulation flows and IC settings from the front end parameters and IC model components to manage runtime and compile time variability more efficiently. In each simulation, the front end and IC model components for the IC generation of interest are loaded. With this approach we execute a high number of simulations of multiple different parameters and settings in parallel. As a result, we simulate more scenarios in less time. We show that this approach saves our team two to three weeks when setting up new IC revisions while mitigating redundant code. Additionally, we can compile subsets of the simulation framework more easily to deploy stand-alone debugging and system design tools for internal and external customers. With this work we want the emphasize the use of SPL techniques beyond traditional software engineering domain.

关键词： IC model system model behavior model model-based system design software product line variability managing variability

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Do We Really Need simulation for a Transition Towards Circular Supply Chain Management? A Possible Answer from Scientific Literature 43rd

Do We Really Need Simulation for a Transition Towards Circul...

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43rd IFIP WG 5.7 international conference on Advances in Production Management Systems (APMS)

作者： Moroni, Francesco Viola, Alessandro Gallo, Mose Romagnoli, Giovanni Zammori, Francesco Univ Parma Vle Sci 181-A I-43124 Parma Italy Univ Napoli Federico II I-80125 Naples Italy

ISBN: (纸本)9783031716249;9783031716225;9783031716218

In this paper, we conducted a structured literature review of 98 contributions that have been classified to investigate the impact of simulation techniques to model more sustainable Supply Chains (SCs). A massive number of resources are still being used to make and manage products, with the availability of natural resources that is becoming scarcer every day. This poses a challenge that supply chain management must address, coupled with enhanced customer awareness for environmental issues. Recent strategies to solve these issues include concepts such as the Circular Economy and Circular Supply Chain Management. The latter, in fact, integrates Circular Economy principles to enable the transition from Linear Supply Chain networks to circular models. simulation modelling techniques, such as Discrete-Event and Agent-Based simulation, are well-known solutions that support SC planning and design. As such, they can also support the transition towards circular SCs. Our findings highlight a lack of Closed-Loop and Circular Supply Chain network models, and clearly show that further investigation is required to comprehend and evaluate the effectiveness of simulation for Circular and Closed-Loop SC planning and design.

关键词： Model Agent-based simulation Discrete-event simulation Literature review

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simulation and Modeling of Quadrupole Mass Spectrometer Fringing Fields using SIMION 3

Simulation and Modeling of Quadrupole Mass Spectrometer Frin...

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3rd international conference on applied Mathematics, modelling, and Intelligent Computing, CAMMIC 2023

作者： Yang, Qingyuan Huang, Zejian Zhao, Tianqi Jin, Shangzhong School of Optics and Electronic Technology China Jiliang University No.258 Xueyuan District Xiasha Higher Education Park Qiantang District Hangzhou*** China National Institute of Metrology Center for Advanced Measurement Science Technology Innovation Center of Mass Spectrum for State Market Regulation Beijing*** China

ISBN: (数字)9781510667617

ISBN: (纸本)9781510667600

This paper proposes an approach based on numerical simulation to enhance the accuracy and generality of fringe field modeling in Quadrupole Mass Filter (QMF) systems. The proposed method involves SIMION simulation calculations to achieve the desired outcomes. A numerical model of the potential distribution is constructed using the finite numerical difference method in the region where the QMF and end plate are connected. The exponential fringe field function is selected as the basis for approximation, and the fringe field function is obtained through the least squares method. The potential gradient curves for different end plate gaps are derived, revealing the impact of gaps on the fringe field intensity, length, and penetration into the QMF. The proposed method is validated by comparing the obtained fringe field analysis model with literature data The research establishes the reliability and validity of the proposed method for effectively analyzing the fringe fields between the end plate and the QMF electrode in QMF systems. This makes it possible to study the properties of such systems by phase-space dynamics methods. © 2023 SPIE.

关键词： Numerical models

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The application of random walk simulation in Finance 2

The application of random walk simulation in Finance

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2nd international conference on applied Mathematics, modelling, and Intelligent Computing (CAMMIC)

作者： Guo, Xiaoying Pennuo Educ Grp Qingdao 266000 Shandong Peoples R China

ISBN: (纸本)9781510655201;9781510655195

Contemporarily, the random walk is widely applied in the field of finance, suggests that the history stock price has no relation or impact on the stock price tomorrow, i.e., the direction the of stock price is entirely random and unpredictable. This paper investigates random walk simulation in Finance based on the information retrieval and literature review. According to the analysis, if one holds the strong belief in the random walk theory, well-perform ETH or portfolio strongly relevant to core Index (e.g., S&P 500, Nasdaq) will be a proper choice for investors. Otherwise, if one holds that the price movements are inherit connected instead of random variation, statistic evaluation (also known as technical analysis) can be applied to earn with extra returns via time-selection trading actively and positively. Based on enough trials, this paper will try to explore the nature and patterns of random process, which sheds light on future stock price prediction and explanation.

关键词： random walk simulation Finance

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Analysis and modelling of the Working Principle of the Deceptive Infrared Jammer

Analysis and Modelling of the Working Principle of the Decep...

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2022 international conference on applied Mathematics and Digital simulation, AMDS 2022

作者： Zhang, Kai Chen, Qiuju Zhang, Yi Cheng, Yubao University of Science and Technology of China China Anhui Province Key Laboratory of Intelligent Building and Building Energy Saving Anhui Jianzhu University China Electronic Countermeasure College National University of Defense Technology China

The deceptive infrared jammer is mainly used to jam the infrared point source-seeking guidance head of the modulated disc type. Through the mathematical modelling and simulation based on MATLAB, from the point of view that the essence of deceptive jamming is its signal should be recognized as the guidance signal, the jamming signal style output from the jammer has been analysed in detail. Then the parameter setting of the jammer has been determined, and the constraint relationship between the parameter setting and the jamming effect has been researched. The research work in this paper can effectively enhance the reader's understanding of the deceptive infrared jammer and its jamming mechanism. © Published under licence by IOP Publishing Ltd.

关键词： MATLAB

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Multi-Agent modelling Notation (MAMN): A Multi-layered Graphical modelling Notation for Agent-Based simulations 24th

Multi-Agent Modelling Notation (MAMN): A Multi-layered Graph...

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24th international conference on Principles and Practice of Multi-Agent Systems (PRIMA)

作者： Nguyen, Johannes Powers, Simon T. Urquhart, Neil Farrenkopf, Thomas Guckert, Michael Tech Hsch Mittelhessen KITE D-61169 Friedberg Germany Edinburgh Napier Univ Sch Comp Engn & Built Environm Edinburgh EH10 5DT Midlothian Scotland

ISBN: (纸本)9783031212024;9783031212031

Cause-effect graphs have been applied in non agent-based simulations, where they are used to model chained causal relations between input parameters and system behaviour measured by appropriate indicators. This can be useful for the analysis and interpretation of simulations. However, multi-agent simulations shift the paradigm of chained causal relations to multiple levels of detail and abstraction. Thus, conventional cause-effect graphs need to be extended to capture the hierarchical structure of causal relations in multi-agent models. In this paper, we present a graphical modelling method that we call Multi-Agent modelling Notation (MAMN), with which global aspects of the simulation as well as detailed interior mechanisms of agent behaviour can be described. We give proof of concept by showing how the logic that connects individual agent behaviour to global outcomes in a previously published simulation model can be expressed in a concise diagrammatic form. This provides understanding into what drives the model behaviour without having to study source code. We go on to discuss benefits and limitations as well as new opportunities that arise from this type of model analysis.

关键词： Cause-effect modelling AOSE Multi-agent simulations

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modelling of a thin-film transistor based on the carbon nanotubes network and ESD circuit simulation by SPICE 11

Modelling of a thin-film transistor based on the carbon nano...

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2024 11th international conference on Advanced Manufacturing Technology and Materials Engineering, AMTME 2024

作者： Liao, Xianghua Zeng, Weihao Huang, Hao Wang, Qinqin Zhou, Zijie Hunan Institute of Advanced Sensing and Information Technology Xiangtan University Hunan Xiangtan411105 China

Carbon nanotubes are considered one of the most promising candidate materials for Si. However, there has been limited research on modeling devices based on carbon nanotubes and performing discharge (ESD) protection simulations for circuits composed of carbon nanotube-based devices. Within this article, the current characteristics of network carbon nanotube field-effect transistors (CNT-TFT) with micrometer size are studied, and the devices with channel length Lg = 11 μm and width of W = 108 μm are modelled. It is found that the simulation curves of the model are in good agreement with the experimental results. In this article, the ESD behavior modeling method is introduced. By utilizing this method, a bidirectional diode device model was programmed and integrated into an inverter built with CNT-TFT models. When an ESD positive pulse is applied between the input and ground terminals (PS mode), it is found that the simulation results of the circuit have passed the 500 V human body model (HBM) ESD pulse test in the PS mode, thereby achieving ESD protection simulation for carbon-based integrated circuits. © 2024 Institute of Physics Publishing. All rights reserved.

关键词： Thin film transistors

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