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Sustainable Supplier Selection Model in Supply Chains During the COVID-19 Pandemic

Computers, Materials & Continua 2022年第2期70卷 3005-3019页

作者： Chia-Nan Wang Chao-Fen Pan viet tinh nguyen Syed Tam Husain Department of Industrial Engineering and Management National Kaohsiung University of Science and TechnologyKaohsiung80778Taiwan Faculty of Commerce Van Lang UniversityHo Chi Minh City70000Vietnam

As global supply chains become more developed and complicated,supplier quality has become increasingly influential on the competitiveness of businesses during the Covid-19 ***,supplier selection is an increasingly important process for any business around the *** a supplier is a complex decision that can result in lower procurement costs and increased profits without increasing the cost or lowering the quality of the ***,these decision-making problems can be complicated in caseswithmultiple potential ***’s textile and garment industry,for example,has made rapid progress in recent years but is still facing great difficulties as the supply of raw materials and machinery depends heavily on foreign ***,it is extremely important for textile and garment manufacturing companies in vietnam to implement an effective supplier evaluation and selection *** multicriteria decision-making models are frequently employed to assist with supplier evaluation and selection problems,few of these models consider the problem under the condition of a fuzzy decision-making *** aim of this paper is to create a hybrid MCDM model using the Fuzzy Analytical Hierarchy Process(FAHP)model and the Technique for Order of Preference by Similarity to Ideal Solution(TOPSIS)to assist the supplier selection process in the garment industry in a fuzzy decision-making *** this study,the FAHP method is used to evaluate the performance and the weight of each *** is then used to rank all potential *** proposed model is then applied to a real-world case study to demonstrate both the process of calculation as well as its real-world *** results from the case study provide empirical evidence that the model is *** proposed approach can also be used in combination with other MCDM models to better support decision makers and can be modified to be applied in similar suppl

关键词： MCDM model FAHP fuzzy theory TOPSIS garment industry covid-19

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Optimization Model for Selecting Temporary Hospital Locations During COVID-19 Pandemic

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Computers, Materials & Continua 2022年第1期70卷 397-412页

作者： Chia-Nan Wang Chien-Chang Chou Hsien-Pin Hsu Van Thanh nguyen viet tinh nguyen Department of Industrial Engineering and Management National Kaohsiung University of Science and TechnologyKaohsiung80778Taiwan Department of Shipping Technology National Kaohsiung University of Science and TechnologyKaohsiung80778Taiwan Department of Supply Chain Management National Kaohsiung University of Science and TechnologyKaohsiung80778Taiwan Faculty of Commerce Van Lang UniversityHo Chi Minh City70000Vietnam

The two main approaches that countries are using to ease the strain on healthcare infrastructure is building temporary hospitals that are specialized in treating COVID-19 patients and promoting preventive *** such,the selection of the optimal location for a temporary hospital and the calculation of the prioritization of preventive measures are two of the most critical decisions during the pandemic,especially in densely populated areas where the risk of transmission of the virus is *** the location selection process or the prioritization of measures is poor,healthcare workers and patients can be harmed,and unnecessary costs may come into *** this study,a decision support framework using a fuzzy analytic hierarchy process(FAHP)and a weighted aggregated sum product assessment model are proposed for selecting the location of a temporary hospital,and a FAHP model is proposed for calculating the prioritization of preventive measures against COVID-19.A case study is performed for Ho Chi Minh City using the proposed decision-making *** contribution of this work is to propose a multiple criteria decision-making model in a fuzzy environment for ranking potential locations for building temporary hospitals during the COVID-19 *** results of the study can be used to assist decisionmakers,such as government authorities and infectious disease experts,in dealing with the current pandemic as well as other diseases in the *** the entire world facing the global pandemic of COVID-19,many scientists have applied research achievements in practice to help decision-makers make accurate decisions to prevent the *** the number of cases increases exponentially,it is crucial that government authorities and infectious disease experts make optimal decisions while considering multiple quantitative and qualitative *** such,the proposed approach can also be applied to support complex decision-making processes in a fuzzy environment in di

关键词： COVID-19 WHO MCDM preventive measures fuzzy theory FAHP WASPAS

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Optimization Model in Manufacturing Scheduling for the Garment Industry

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Computers, Materials & Continua 2022年第6期71卷 5875-5889页

作者： Chia-Nan Wang Yu-Chen Wei Po-Yuk So viet tinh nguyen Phan nguyen Ky Phuc Department of Industrial Engineering and Management National Kaohsiung University of Science and TechnologyKaohsiung80778Taiwan Department of Money and Banking National Kaohsiung University of Science and TechnologyKaohsiung80778Taiwan Ph.D.Program in Finance and Banking National Kaohsiung University of Science and TechnologyKaohsiung80778Taiwan Faculty of Commerce Van Lang UniversityHo Chi Minh CityVietnam Faculty of Industrial Engineering and Management International UniversityHo Chi Minh City70000Vietnam

The garment industry in vietnam is one of the country’s strongest industries in the ***,the production process still encounters problems regarding scheduling that does not equate to an optimal *** paper introduces a production scheduling solution that resolves the potential delays and lateness that hinders the production process using integer programming and order allocation with a make-to-order manufacturing viewpoint.A number of constraints were considered in the model and is applied to a real case study of a factory in order to viewhowthe tardiness and latenesswould be affected which resulted in optimizing the scheduling time ***,the constraints considered were order assignments,production time,and tardiness with an objective function which is to minimize the total cost of *** results of the study precisely the overall cost of delay of the orders given to the plant and successfully propose a suitable production schedule that utilizes the most of the plant *** study has shown promising results that would assist plant and production managers in determining an algorithm that they can apply for their production process.

关键词： Production scheduling problem order allocation integer programming make-to-order manufacturing apparel industry

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A Model for Selecting a Biomass Furnace Supplier Based on Qualitative and Quantitative Factors

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Computers, Materials & Continua 2021年第11期69卷 2339-2353页

作者： Chia-Nan Wang Hsin-Pin Fu Hsien-Pin Hsu Van Thanh nguyen viet tinh nguyen Ansari Saleh Ahmar Department of Industrial Engineering and Management National Kaohsiung University of Science and TechnologyKaohsiung80778Taiwan Department of Marketing and Distribution Management National Kaohsiung University of Science and TechnologyKaohsiung80778Taiwan Department of Supply Chain Management National Kaohsiung University of Science and TechnologyKaohsiung80778Taiwan Faculty of Commerce Van Lang UniversityHo Chi Minh City70000Vietnam Faculty Department of Statistics Faculty of Mathematics and Natural SciencesUniversitas Negeri MakassarMakassar90223Indonesia

In developing countries,solar energy is the largest source of energy,accounting for 35%–45%of the total energy *** energy resource plays a vital role in meeting the energy needs of the world,especially in *** has favorable natural conditions for this energy *** it is hot and humid,and it has much rainfall and fertile soil,biomass develops very ***,byproducts from agriculture and forestry are abundant and continuously ***,byproducts that are considered natural waste have become the cause of environmental pollution;these include burning forests,straw,and sawdust in the North;and rice husks dumped into rivers and canals in the Mekong Delta *** energy is provided in a short cycle,is environmentally safe to use and is encouraged by organizations that support sustainable *** advantage of this energy source provides energy for economic development and ensures environmental *** to the abovementioned favorable conditions,many biomass energy plants are being built in *** other renewable energy investment projects,the selection of the construction contractor,the selection of equipment for the installation of the power plant,and the choice of construction site are complex multi-criteria *** this case,decisionmakers must evaluate many qualitative and quantitative *** factors interact with each other and it is difficult to use personal experience to choose the optimal solution for such complex decision-making problems,especially in a fuzzy decision-making ***,in this study,the authors use a Multi-Criteria Decision-Making(MCDM)model that uses a Fuzzy Analytic Hierarchy Process(FAHP)model and the Combined Compromise Solution(CoCoSo)algorithm to select biomass furnace suppliers utilizing both qualitative and quantitative ***,the results of this work will provide the first look at a hybrid CoCoSo/FAHP method that decision-m

关键词： Biomass energy supplier selection biomass furnace MCDM optimization CoCoSo algorithm fuzzy theory FAHP model industry 4.0

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Improving Supply Chain Performance Through Supplier Selection and Order Allocation Problem

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Computers, Materials & Continua 2022年第1期70卷 1667-1681页

作者： Chia-Nan Wang Ming-Cheng Tsou Chih-Hung Wang viet tinh nguyen Pham Ngo Thi Phuong Department of Industrial Engineering and Management National Kaohsiung University of Science and TechnologyKaohsiung80778Taiwan Department of Shipping Technology National Kaohsiung University of Science and TechnologyKaohsiung80778Taiwan Department of International Business Shih Chien UniversityTaipei80778Taiwan Faculty of Commerce Van Lang UniversityHo Chi Minh City70000Vietnam Faculty of Industrial Engineering and Management International UniversityHo Chi Minh City70000Vietnam

Suppliers play the vital role of ensuring the continuous supply of goods to themarket for *** businesses do not maintain a strong bond with their suppliers,they may not be able to secure a steady supply of goods and products for their *** a result of failure to deliver products,the production and business activities of the business can be delayed which leads to the loss of ***,each trading enterprise will have a variety of commodity supply chains withmultiple *** play an important role and contribute to the value of the entire supply *** any supplier encounters a problem,the whole supply chain of businesses will be affected and could lead to not guaranteeing the stable supply to the ***,suppliers can be seen as a threat to businesses where they have the ability to increase input prices or decrease the quality of the required products and services they *** quantity of the business,and the supply lead time directly affect the operations and reduce the profitability of the *** paper mainly focuses on the supplier selection problemunder a variety of price level and product families when using a two-phase fuzzy multi-objective linear *** objectives of the proposed model are to minimize the total purchasing and ordering cost in order to reduce the quantity of defective materials and the late-delivery components from ***,the piecewise linear membership function is applied in themodel to determine an optimal solution which is based on the requirement of decision makers under their fuzzy *** results of this study can be applied in various business environment and provide a reliable decision tool for choosing potential suppliers relating to these *** on the results,the company canmake a good decision on supplier selection;therefore,the company can improve the quality and quantity of their final *** is because,the best supplier can su

关键词： Supplier selection multi-objective linear programming multiprice level multi-product fuzzy sets

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Flow-Shop Scheduling with Transportation Capacity and Time Consideration

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Computers, Materials & Continua 2022年第2期70卷 3031-3048页

作者： Chia-Nan Wang Glen Andrew Porter Ching-Chien Huang viet tinh nguyen Syed Tam Husain Department of Industrial Engineering and Management National Kaohsiung University of Science and TechnologyKaohsiung80778Taiwan College of Engineering National Kaohsiung University of Science and TechnologyKaohsiung80778Taiwan Department of Mechanical Engineering National Kaohsiung University of Science and TechnologyKaohsiung80778Taiwan Faculty of Commerce Van Lang UniversityHo Chi Minh City70000Vietnam

Planning and scheduling is one of the most important activity in supply chain operation *** the years,there have been multiple researches regarding planning and scheduling which are applied to improve a variety of supply *** includes two commonly used methods which are mathematical programming models and heuristics *** manufacturing systems are seen normally in industrial environments but few have considered certain constraints such as transportation capacity and transportation time within their supply chain.A two-stage flowshop of a single processing machine and a batch processing machine are considered with their capacity and transportation time between *** objectives of this research are to build a suitable mathematical model capable of minimizing the maximum completion time,to propose a heuristic optimization algorithm to solve the problem,and to develop an applicable program of the heuristics *** Integer Programming(MIP)model and a heuristics optimization algorithmwas developed and tested using a randomly generated data set for *** overall results and performance of each approach was compared between the two methods that would assist the decision maker in choosing a suitable solution for their manufacturing line.

关键词： Scheduling two-stage flowshop supply chain management transportation batch processing machine heuristic

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Two-Stage Production Planning Under Stochastic Demand:Case Study of Fertilizer Manufacturing

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Computers, Materials & Continua 2022年第1期70卷 1195-1207页

作者： Chia-Nan Wang Shao-Dong Syu Chien-Chang Chou viet tinh nguyen Dang Van Thuy Cuc Department of Industrial Engineering and Management National Kaohsiung University of Science and TechnologyKaohsiung80778Taiwan Sunline NP Telecommunications Co.Ltd Kaohsiung80778Taiwan Department of Shipping Technology National Kaohsiung University of Science and TechnologyKaohsiung80778Taiwan Faculty of Commerce Van Lang UniversityHo Chi Minh City70000Vietnam Faculty of Industrial Engineering and Management International UniversityHo Chi Minh City70000Vietnam

Agriculture is a key facilitator of economic prosperity and nourishes the huge global *** achieve sustainable agriculture,several factors should be considered,such as increasing nutrient and water efficiency and/or improving soil health and *** fertilizer is one of the fastest and easiest ways to improve the quality of nutrients inland and increase the effectiveness of crop *** supplies most of the necessary nutrients for plants,and it is estimated that at least 30%-50%of crop yields is attributable to commercial fertilizer nutrient *** is always a major concern in achieving sustainable and efficient *** reasonable and customized fertilizerswill require a significant increase in the number of formulae,involving increasing costs and the accurate forecasting of the right time to apply the suitable *** alternative solution is given by two-stage production planning under stochastic demand,which divides a planning schedule into two *** primary stage has non-existing demand information,the inputs of which are the proportion of raw materials needed for producing fertilizer products,the cost for purchasing materials,and the production *** total quantity of purchased material and produced products to be used in the blending process must be defined to meet as small as possible a paid *** the second stage,demand appears under multiple scenarios and their respective *** stage will provide a solution for each occurring scenario to achieve the best *** two-stage approach is presented in this paper,the mathematical model of which is based on linear integer *** the diversity of fertilizer types,themathematicalmodel can advise manufacturers about which products will generate as much as profit as ***,two objectives are taken into ***,the paper’s thesis focuses on minimizing overall system costs,e.g.,including inventory cost,pur

关键词： Two-stage stochastic programming demand uncertainty planning blending fertilizer

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Heuristic Scheduling of Job Orders in a Build-to-Order Manufacturing System

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Computer Systems Science & Engineering 2022年第3期40卷 1059-1072页

作者： Chia-Nan Wang Chien-Chang Chou Yu-Chi Chung nguyen Ky Phuc Phan VanThanh nguyen viet tinh nguyen Department of Industrial Engineering and Management National Kaohsiung University of Science and TechnologyKaohsiung80778Taiwan Department of Shipping Technology National Kaohsiung University of Science and TechnologyKaohsiung80778Taiwan Faculty of Industrial Engineering and Management International UniversityHo Chi Minh City70000Vietnam Faculty of Commerce Van Lang UniversityHo Chi Minh City70000Vietnam

With the continuous development of technology,traditional manual work has been becoming more and more *** large or medium-sized companies have applied Enterprise Resource Planning(ERP)software into their business and production ***,since many small firms cannot afford ERP because of its expensive cost,they often still employ manual work for the same tasks this software resolves,especially for *** paper aims to provide a possible solution for small businesses to try automated scheduling and discover whether it can help *** are two main ways to make this determination:a mathematical model and a heuristic model,which are suitable for assessing low-and medium-sized workloads,*** case study was carried out in a small domestic interior furniture company,particularly in scheduling for their customized products in two-stage flow ***,they produce according to the sequence of customers’***,when we applied these supportive tools with batch-processing machines,they experienced enhanced production performance due to diminishing setup time for distinctive items and a more streamlined arrangement of job *** changes were implemented for some small companies that do not use many production stages and have a suitable number of jobs and *** this method were applied to larger demands,it would need further improvement and development to become a complete tool that can perform like a part of an ERP system.

关键词： scheduling mathematical heuristic flow shop batch-processing

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Truly optimal semi-active damping to control free vibration of a single degree of freedom system

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Theoretical & Applied Mechanics Letters 2024年第2期14卷 142-145页

作者： viet Duc La Ngoc Tuan nguyen Institute of Mechanics Vietnam Academy of Science and TechnologyHanoi 10000Vietnam Graduate University of Science and Technology Vietnam Academy of Science and TechnologyHanoi 10000Vietnam

This paper studies a single degree of freedom system under free vibration and controlled by a general semiactive damping.A general integral of squared error is considered as the performance index.A one-time switching damping controller is proposed and *** pontryagin maximum principle is used to prove that no other form of semi-active damping can provide the better performance than the proposed one-time switching damping.

关键词： Analytical optimization Quadratic integral Lyapunov equation Pontryagin maximum principle

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Forecasting measured responses of structures using temporal deep learning and dual attention

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Frontiers of Structural and Civil Engineering 2024年第6期18卷 832-850页

作者： viet-Hung DANG Trong-Phu nguyen Thi-Lien PHAM Huan X.nguyen Department of Structural Mechanics Hanoi University of Civil EngineeringHanoi 11600Vietnam Faculty of Applied Science University of Economics-Technology for IndustriesHanoi 11600Vietnam London Digital Twin Research Centre Faculty of Science and TechnologyMiddlesex UniversityLondon NW44BTUK International School Vietnam National UniversityHanoi 11600Vietnam

The objective of this study is to develop a novel and efficient model for forecasting the nonlinear behavior of structures in response to time-varying random *** key idea is to design a deep learning architecture to leverage the relationships,between external excitations and structure's vibration signals,and between historical values and future values,within multiple time-series *** proposed method consists of two main steps:the first step applies a global attention mechanism to combine multiple-measured time series and time-varying excitation into a weighted time series before feeding it to a temporal architecture;the second step utilizes a self-attention mechanism followed by a fully connected layer to predict multi-step future *** viability of the proposed method is demonstrated via two case studies involving synthetic data from a three-dimensional(3D)reinforced concrete structure and experimental data from an 18-story steel ***,comparison and robustness studies are carried out,showing that the proposed method outperforms conventional methods and maintains high performance in the presence of noise with an amplitude of less than 10%.

关键词： structural dynamic time-varying excitation deep learning signal processing response forecasting

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