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2023 Winter Simulation Conference, WSC 2023

作者： Ahn, Dohyun Zheng, Lewen The Chinese University of Hong Department of Systems Engineering and Engineering Management Shatin New Territories Hong Kong

ISBN: (纸本)9798350369663

This paper studies the efficient estimation of expectations defined on convex rare-event sets using importance sampling. Classical importance sampling methods often neglect the geometry of the target set, resulting in a significant number of samples falling outside the target set. This can lead to an increase in the relative error of the estimator as the target event becomes rarer. To address this issue, we develop a conditional importance sampling scheme that achieves bounded relative error by changing the sampling distribution to ensure that a majority of samples lie inside the target set. The proposed method is easy to implement and significantly outperforms the existing approaches in various numerical experiments. © 2023 IEEE.

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An Approach on Expanding a Shipbuilding Company to a Shipmanagement Business Unit: A Case Study 24

An Approach on Expanding a Shipbuilding Company to a Shipman...

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6th International Conference on management Science and Industrial engineering, MSIE 2024

作者： Templonuevo, Jan Alexis C. Mariñas, Klint Allen Young, Michael School of Industrial Engineering and Engineering Management Mapua University Manila1002 Philippines Department of Industrial and Systems Engineering Chung Yuan Christian University Taoyuan320 Taiwan

ISBN: (纸本)9798400717130

A company ventures to expand its services from aluminum ship construction to full scale ship management business unit to provide hybrid services on its existing and new clients and further compete on a global scale. The study tackles the existing ship maintenance and repair processes and practices of Company A. Moreover, highlights the feasibility of catering and the methodological formulation of the process map to be implemented. A proposed framework is discussed in detail, the processes were created and developed through focus group discussions, interviews, and literature review. Discussions were conducted from/between maritime professionals on diverse views of engineers and architects who are from seagoing, offshore or land based maritime professions. Focus group discussion was held to combine ideas which led into the creation of processes, whereas also supported by related literature on the subject matter. The study formed illustrations of processes into decision analysis tree, assessment matrix, process maps and innovative adaptations that would fit the need of the company to provide the services around the Philippines with the vessels at any given point on its map. This third-party ship management, which is hybrid in nature, lifts the level of conventional maintenance and repair which are mostly involved only by the professionals practicing in this domain. The paper demonstrated how a shipbuilding company that specializes but is limited in the delivery, construction, and logistical support of ships may broaden its scope to a full-scale third-party ship management business unit. © 2024 ACM.

关键词： Shipyards

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Orbiting Optimization Model for Tracking Voltage Security Region Boundary in Bulk Power Grids

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CSEE Journal of Power and Energy systems 2022年第2期8卷 476-487页

作者： Xue Li Tao Jiang Linquan Bai Xiao Kou Fangxing Li Houhe Chen Guoqing Li the Department of Electrical Engineering Northeast Electric Power UniversityJilin 132012China the Department of Systems Engineering and Engineering Management University of North Carolina at CharlotteCharlotteNC28223 USA the Department of Electrical Engineering and Computer Science University of TennesseeKnoxvilleTN37996 USA

A voltage security region(VSR)is a powerful tool for monitoring the voltage security in bulk power grids with high penetration of *** can prevent cascading failures in wind power integration areas caused by serious over or low voltage *** bottlenecks of a VSR for practical applications are computational efficiency and *** bridge these gaps,a general optimization model for tracking a voltage security region boundary(VSRB)in bulk power grids is developed in this paper in accordance with the topological characteristics of the ***,the initial VSRB point on the VSRB is examined with the traditional OPF by using the base case parameters as initial ***,the rest of the VSRB points on the VSRB are tracked one after another,with the proposed optimization model,by using the parameters of the tracked VSRB point as the initial value to explore its adjacent VSRB *** proposed approach can significantly improve the computational efficiency of the VSRB tracking over the existing algorithms,and case studies,in the WECC 9-bus and the Polish 2736-bus test systems,demonstrate the high accuracy and efficiency of the proposed approach on exploring the VSRB.

关键词： Optimal power flow(OPF) stress direction voltage security critical point voltage security region voltage security region boundary

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Application of Analytical Hierarchy Process (AHP) for Assessment of Plastic Waste

Application of Analytical Hierarchy Process (AHP) for Assess...

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2024 IEEE International Conference on Technology management, Operations and Decisions, ICTMOD 2024

作者： Joseph, Tania M Junu Jahana, C. Ndiaye, Malick College of Engineering American University of Sharjah Engineering Systems Management Sharjah United Arab Emirates College of Engineering American University of Sharjah Department of Industrial Engineering Sharjah United Arab Emirates

ISBN: (纸本)9798350367355

Addressing the escalating issue of plastic pollution has become a critical environmental priority due to the global inadequacy in managing rising plastic waste. This study applies the Analytical Hierarchy Process (AHP) to rank plastics based on their environmental, economic, and social impacts, identifying polycarbonate (PC) and polyvinyl chloride (PVC) as the most problematic. The AHP framework provides a methodologically sound basis for prioritizing these plastics in waste management strategies, enabling more targeted policy interventions, lifecycle analyses, and corporate decisionmaking. Additionally, the findings can inform public awareness campaigns and guide efforts toward sustainable consumption and waste reduction. By focusing on the most impactful plastics, this research offers a strategic pathway for enhancing the efficiency and sustainability of global plastic waste management. © 2024 IEEE.

关键词： Plastic recycling

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Improving Power Response of Single-Controllable VSG-Based Active Distribution Network

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CSEE Journal of Power and Energy systems 2025年第1期11卷 102-114页

作者： Shah Fahad Arman Goudarzi Pierluigi Siano Ji Xiang Department of Electrical and Computer Engineering Missouri University of Science and TechnologyUSA University of Victoria Canada Department of Management&Innovation Systems University of SalernoItaly Department of Electrical and Electronic Engineering Science University of JohannesburgJohannesburg2006South Africa National Laboratory of Industrial Control Technology College of Electrical EngineeringZhejiang UniversityHangzhou310058China

Controlling an active distribution network(ADN)from a single PCC has been advantageous for improving the performance of coordinated Intermittent RESs(IRESs).Recent studies have proposed a constant PQ regulation approach at the PCC of ADNs using coordination of non-MPPT based ***,due to the intermittent nature of DGs coupled with PCC through uni-directional broadcast communication,the PCC becomes vulnerable to transient *** address this challenge,this study first presents a detailed mathematical model of an ADN from the perspective of PCC regulation to realize rigidness of PCC against ***,an H_(∞)controller is formulated and employed to achieve optimal performance against disturbances,consequently,ensuring the least oscillations during transients at ***,an eigenvalue analysis is presented to analyze convergence speed limitations of the newly derived system ***,simulation results show the proposed method offers superior performance as compared to the state-of-the-art methods.

关键词： Cooperative control of DGs hierarchical control system high penetration of intermittent RESs H_(∞)control optimal control in power systems single-controllable active distribution networks

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Adoption of cognitive computing decision support system in the assessment of health-care policymaking

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Journal of systems and Information Technology 2023年第4期25卷 395-439页

作者： Behera, Rajat Kumar Bala, Pradip Kumar Panigrahi, Prabin Kumar Dasgupta, Shilpee A. School of Computer Engineering Kalinga Institute of Industrial Technology Bhubaneswar India Department of Information Systems and Business Analytics Indian Institute of Management Ranchi Ranchi India Department of Information Systems Indian Institute of Management Indore Indore India Department of General Management Indian Institute of Management Ranchi Ranchi India

Purpose: Despite technological advancements to enhance patient health, the risks of not discovering the correct interactions and trends in digital health are high. Hence, a careful policy is required for health coverage tailored to needs and capacity. Therefore, this study aims to explore the adoption of a cognitive computing decision support system (CCDSS) in the assessment of health-care policymaking and validates it by extending the unified theory of acceptance and use of technology model. Design/methodology/approach: A survey was conducted to collect data from different stakeholders, referred to as the 4Ps, namely, patients, providers, payors and policymakers. Structural equation modelling and one-way ANOVA were used to analyse the data. Findings: The result reveals that the behavioural insight of policymakers towards the assessment of health-care policymaking is based on automatic and reflective systems. Investments in CCDSS for policymaking assessment have the potential to produce rational outcomes. CCDSS, built with quality procedures, can validate whether breastfeeding-supporting policies are mother-friendly. Research limitations/implications: Health-care policies are used by lawmakers to safeguard and improve public health, but it has always been a challenge. With the adoption of CCDSS, the overall goal of health-care policymaking can achieve better quality standards and improve the design of policymaking. Originality/value: This study drew attention to how CCDSS as a technology enabler can drive health-care policymaking assessment for each stage and how the technology enabler can help the 4Ps of health-care gain insight into the benefits and potential value of CCDSS by demonstrating the breastfeeding supporting policy. © 2023, Emerald Publishing Limited.

关键词： Decision support systems

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Ontology-Based Functional Analysis of an Aerospace System

Ontology-Based Functional Analysis of an Aerospace System

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AIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2025

作者： Johnson, Hamilton E. Sureshkumar, Mayuranath Kannan, Hanumanthrao Thomas, L. Dale Mechanical and Aerospace Engineering Department University of Alabama in Huntsville HuntsvilleAL35899 United States Industrial and Systems Engineering and Engineering Management Department University of Alabama in Huntsville HuntsvilleAL35899 United States

ISBN: (数字)9781624107238

ISBN: (纸本)9781624107238

systems engineering often employs "-ilities", such as affordability, to represent various aspects of a system. While these "-ilities" are widely used, exact definitions for the terms can vary between individuals. While most definitions of affordability include some cost notion, only a subset balance cost against a benefit. Additionally, some definitions treat affordability as a binary constraint, a system either is affordable or it is not. Others define it in more continuous terms which could be treated as an objective to be maximized. While multiple definitions can be readily observed from different sources, the degree to which definitions for a concept such as affordability differs within a single organization has not been thoroughly studied. This paper presents results from a survey completed by 172 employees of NASA Marshall Space Flight Center. Definitions of affordability from each participant are categorized ac-cording to how cost and benefit notions are used in the definition. Eight different categories of definitions were observed;however, 86 of the 172 definitions were categorized as involving a cost constraint with no clear benefit component. Due to the variety of definitions of affordability observed, practitioners should be cautious about assuming what stakeholders and fellow decision makers mean when using the term affordability. The use of affordability definitions categorized as involving only a cost constraint may result in the elimination of alternatives in a design space, rather than driving decision makers to continuously improve affordability. © 2025, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.

关键词： NASA

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Influence of Keywords Color on Time Pressure in Synchronous Online Learning for Non-Native English Students: An Eye-tracking Approach 23

Influence of Keywords Color on Time Pressure in Synchronous ...

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7th International Conference on Education and Multimedia Technology, ICEMT 2023

作者： Mariñas, Klint Allen Amblon Sato, Jun Jou, Yung-Tsan Mariñas, Alana Gianne Amblon Department of Industrial and Systems Engineering Chung Yuan Christian University Taiwan Engineering and Engineering Management Mapua University Manila Philippines

ISBN: (纸本)9798400709142

The impact of COVID-19 has forced learning institutions to shift from physical to online methods. Due to the changes in learning environments, instructors and students must adapt to the online learning setup. Synchronous online learning has been utilized as an alternative;however, due to sudden changes, students, especially non-native English students using unfamiliar language, need to follow the course in real-time, which cause time pressure problem this affect learning effectiveness. The current research recruited twenty non-native English university students. Reading materials with text keywords and color assistance was utilized through eye-tracking. A post-test was conducted to analyze the relationship between the eye movement parameters and post-test results in different scenarios using analysis of variance. The experimental results indicated that reading materials with colored keywords could help non-native English students to improve reading comprehension and learning outcomes effectively. The red-colored keywords were significant under no time pressure, while the green-colored keywords were substantial in the context of time pressure. This research could provide important information in designing learning materials in synchronous online learning. © 2023 ACM.

关键词： Students

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Preventing the Immense Increase in the Life-Cycle Energy and Carbon Footprints of LLM-Powered Intelligent Chatbots

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engineering 2024年第9期40卷 202-210页

作者： Peng Jiang Christian Sonne Wangliang Li Fengqi You Siming You Department of Industrial Engineering and Management Business SchoolSichuan UniversityChengdu 610064China Department of Ecoscience Aarhus UniversityRoskilde DK-4000Denmark Chinese Academy of Sciences Key Laboratory of Green Process and Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China Systems Engineering Cornell UniversityIthacaNY 14853USA James Watt School of Engineering University of GlasgowGlasgow G128QQUK

Intelligent chatbots powered by large language models(LLMs)have recently been sweeping the world,with potential for a wide variety of industrial *** frontier technology companies are feverishly participating in LLM-powered chatbot design and development,providing several alternatives beyond the famous ***,training,fine-tuning,and updating such intelligent chatbots consume substantial amounts of electricity,resulting in significant carbon *** research and development of all intelligent LLMs and software,hardware manufacturing(e.g.,graphics processing units and supercomputers),related data/operations management,and material recycling supporting chatbot services are associated with carbon emissions to varying *** should therefore be paid to the entire life-cycle energy and carbon footprints of LLM-powered intelligent chatbots in both the present and future in order to mitigate their climate change *** this work,we clarify and highlight the energy consumption and carbon emission implications of eight main phases throughout the life cycle of the development of such intelligent *** on a life-cycle and interaction analysis of these phases,we propose a system-level solution with three strategic pathways to optimize the management of this industry and mitigate the related *** anticipating the enormous potential of this advanced technology and its products,we make an appeal for a rethinking of the mitigation pathways and strategies of the life-cycle energy usage and carbon emissions of the LLM-powered intelligent chatbot industry and a reshaping of their energy and environmental implications at this early stage of development.

关键词： Large language models Intelligent chatbots Carbon emissions Energy and environmental footprints Life-cycle assessment Global cooperation

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Evaluating the Economic Impact of Users’Personality on Selection of Demand Response Programs

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CSEE Journal of Power and Energy systems 2023年第3期9卷 1036-1050页

作者： Hossein Khorramdel Mohsen Gitizadeh Pierluigi Siano Sara Bakhtiari Department of Electronics and Electrical Engineering Shiraz University of TechnologyShirazIran Department of Management&Innovation Systems University of SalernoVia Giovanni PaoloⅡ132Fisciano(SA)-84084Italy Department of Electrical and Electronic Engineering Science University of JohannesburgJohannesburg 2006South Africa Power Systems Studies Center of Shiraz University of Technology ShirazIran

Demand response creates an opportunity for consumers to play an important role in the development of smart *** the advent of renewable energies and their uncertainties,demand response provides a possible solution to resolve these *** addition to demand response schemes in the presence of renewable energy,the personality types of consumers can influence the choice of tariffs and change their electricity *** this paper,first,household residents with different types of personalities are considered as energy ***,the uncertainty of renewable energy sources is considered for the distributed generations scheduling by using a stochastic method called the Here-and-Now approach and considering three tariffs,time of use,real-time pricing,and direct load control in the residential sector to reduce total ***,the tariff choice is compared based on people preferences via various personality types,the Myers-Briggs Type Indicator test,and simulations ***,a probabilistic unit commitment methodology is used for distributed generations scheduling to minimize the total *** financial losses caused by non-optimal tariffs selection are determined through the comparison of *** results show that time of use and direct load control tariffs are optimal ones in summer and winter seasons,respectively.

关键词： Demand response renewable energy smart grid unit commitment

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