Department Of Industrial Engineering Research Articles

Meaning and functions of the specialized laboratory Testbed 4.0

The highly specialized Testbed 4.0 laboratory is located on the premises of the Technical University in Košice at the Faculty of Mechanical Engineering, specifically in the building of the Department of Industrial and Digital Engineering. The idea of creating the Testbed concept arose as a response to the needs arising from the currently ongoing digital transformation of companies and at the same time as a support tool for companies in the competitive struggle, whether on the market of Slovak companies or on a European scale. The article will describe its individual focuses as well as its other forms abroad. It is necessary to point out that the Testbed located in Košice is the first and only specialized laboratory of its kind in Slovakia.

Correlation Between Swelling and Elasticity of Graphene Oxide-Polyacrylamide Composites

Polymer Science: Peer Review Journal Correlation Between Swelling and Elasticity of Graphene Oxide-Polyacrylamide Composites Büşra Osma1, Önder Pekcan2 and Gülşen Akın Evingür3* 1Department of Naval Architecture and Mechanical Engineering, Faculty of Engineering, Pîrî Reis University, Turkey 2Faculty of Engineering and Natural Sciences, Kadir Has University, Turkey 3Department of Industrial Engineering, Faculty of Engineering, Pîrî Reis University, Turkey *Corresponding author: Gülşen Akın Evingür, Department of Industrial Engineering, Faculty of Engineering, Pîrî Reis University, Tuzla, Istanbul, Turkey Submission: August 12, 2022;Published: September 06, 2022 DOI: 10.31031/PSPRJ.2022.04.000582 ISSN: 2770-6613 Volume4 Issue2

Optimization of the Blood Supply Chain Network with the Possibility of Lateral Delivery

Department of Industrial Engineering, University of Science and Technology of Mazandaran, Behshahr, Iran

Use of DMAIC methodology to enhance online delivery and assessment during and beyond the COVID-19 pandemic

COVID-19 prompted a radical shift in many universities globally, from contact lectures to adoption of online learning and assessment. A university of technology in South Africa has similarly undergone this transition of adopting an online learning and assessment platform. However, there have been many challenges faced in ensuring integrity of online assessments and ensuring that learning outcomes are addressed. This study aims to investigate the factors that inhibit reliability and effectiveness of online assessment during and beyond the COVID-19 pandemic in a department of industrial engineering at a university of technology in South Africa. The study sample consisted of 80 third-year students enrolled in a Production Engineering course. A five-stage Define-Measure-Analyze-Improve-Control (DMAIC) methodology was used to identify the factors that influenced the reliability and effectiveness of online assessment and, thereafter, to improve the online assessment process. The results demonstrate that there was room for improvement in the online learning environment, which in turn led to more authentic assessment and better academic performance by the students. Recommendations are made regarding strategies that could enhance the integrity of online assessments and minimise cheating while ensuring that learning outcomes are addressed.

Estimating the Stockout-Based Demand Spillover Effect in a Fashion Retail Setting

Problem definition: In brick-and-mortar fashion retail stores, inventory stockouts are frequent. When a specific size of a fashion product is out of stock, the unmet demand might not be completely lost because of spillovers to adjacent sizes of the same style or to other styles. Little research has been done to study consumer response to stockouts of fashion products because researchers had limited access to proprietary data of fashion retailers and because it is challenging to estimate stockout-based demand spillover patterns using existing approaches due to the enormous number of stockkeeping units (SKUs) and frequent stockouts in fashion retail stores. To fill this void in the literature, we empirically estimate the stockout-based demand spillover effect in a fashion retail setting. Methodology/results: We obtain a large-scale data set from a fashion retail chain selling world-renowned sportswear brands. The retail stores in the sample are dedicated to products of a single brand. Using around 1.5 million granular and real-time sales and inventory records of 217 stores, 503 men’s footwear products, and 4,024 SKUs over a two-year period, we develop a difference-in-differences framework to estimate the stockout-based cross-size demand spillover effect. We demonstrate the validity of this framework by conducting a pretrend test and a placebo test. We find that roughly 51.7% of the unmet demand of an out-of-stock SKU spills over to adjacent sizes of the same style when they are in stock: 25.1% to the adjacent-larger size and 26.6% to the adjacent-smaller size. The cross-size demand spillover effect is larger in regular stores than in flagship stores, larger for casual sports shoes than for specialized sports shoes, and larger for low-price products than for high-price products. Adapting an existing attribute-based demand model to our setting, we estimate that roughly 20.2% of the unmet demand of an out-of-stock SKU spills over to different styles when they are in stock. Taken together, these estimations suggest that about 28.1% of the unmet demand of an out-of-stock SKU becomes lost sales. We further find that when stockouts are widespread among SKUs, stockout-based demand spillovers are significantly reduced, resulting in much increased lost sales. Managerial implications: First, we empirically quantify the stockout-based cross-size demand spillover effect and its impact on lost sales in a brick-and-mortar fashion retail setting. Second, our simulation analysis shows that incorporating the cross-size demand spillover effect into the sportswear retail chain’s proactive transshipment decision can substantially reduce its transshipment cost and improve its profitability. Funding: S. Li and S. Huang were supported by the National Natural Science Foundation of China [Grant 72188101] and the Center for Data Centric Management in the Department of Industrial Engineering at Tsinghua University. Supplemental Material: The online appendices are available at https://doi.org/10.1287/msom.2022.1135 .

Application of the front tracking method in micro flow measuring devices

This work has the main objective to develop a calibration method for micro flow measuring devices based on the front tracking principle, in the Volume and Flow Laboratory (LVC) of the Portuguese Institute of Quality (IPQ), in a partnership with and the Department of Mechanical and Industrial Engineering (DEMI) of The New University of Lisbon under the project MeDD II – Metrology for Drug Delivery.The experimental setup consists of using a camera and Python software to track the distance traveled by the meniscus of a liquid inside a capillary tube and calculate the flow rate according to appropriated equations. Experimental tests using a flow generator and a flow meter were carried out for different flow rates. Two different setups with cameras of different specifications were tested.To validate the developed front tracking method, internal comparisons using a Nexus pump and a Sensirion meter were performed with the gravimetric and interferometric methods already implemented at LVC. The results obtained by these two comparisons were consistent.This new developed method can therefore be used to calibrate flow devices from 1000 μL/h down to 1 μL/h with an uncertainty value from 2% to 7% (k = 2). The calibration procedure is easy to apply and can be used for both syringe and flow meters. This method is simple to implement in a laboratory and the setup is relatively cheap compared to the gravimetric or interferometric method.Finally, the front tracking method was applied to the calibration of an implantable insulin pump used by diabetic patients.

Virtual Reality as an Immersive Teaching Aid to Enhance the Connection between Education and Practice

Maximizing knowledge transfer is one of the main factors of modern education. It is important to raise the probability that students can successfully apply acquired knowledge into practice. This article deals with virtual reality (VR) as an alternative method to provide students with a more immersive approach to semester assignments and their completion. In addition to information on paper, they are provided with an immersive virtual environment that interactively visualizes problems. To test this approach, a case study took place at the Department of Industrial Engineering, Faculty of Mechanical Engineering at the University of Žilina. Students were given a standard assignment for workplace analysis and optimization. However, in addition to papers containing all the necessary information about the workplace and its processes (a drilling workplace), the students could also put on a VR headset and walk through a virtual copy of the assigned workplace. Instead of relying on a 2D layout and a few photos, the students observed every detail of the workplace from any angle. Moreover, the immersive virtual workplace was interactive, and the students could interact with machine tools and replicate the real manufacturing process. With this new addition, the students completed the assignment and then filled out a short questionnaire questioning their satisfaction with the chosen approach. With positive feedback, the implementation of VR into the teaching process could further motivate students and make the transfer of knowledge into their future jobs easier.

(Invited) A New Frontier in Hybrid Inorganic-Organic Membranes for Redox Flow Batteries: The Polyketone-Based Membranes

Zinc iodide flow batteries (ZIFBs) are amongst the most promising chemistries to substitute the expensive and less energy intensive Vanadium Flow Batteries (VFBs). One of main problems related to this technology is the crossover of water due to the transport of Zn2+. One possible approach is the development of new ion-exchange membranes (IEMs). For practical applications they are required to possess high ionic conductivity, high thermal stability, long lifetime, and electrical insulation. The preparation of polymeric materials with such high-performance properties is still challenging and can lead to high prices, hindering their widespread use in energy conversion technologies. This is even more difficult when considering anion conducting membranes [1-3].Polyketones (PK) are known to be high performance thermoplastic polymers with applications ranging from fire-retardants film coatings, packaging, and fibers, resulting from their high thermal and chemical stability. They can be obtained in high yields by copolymerization of inexpensive and readily available feedstocks such as ethylene and carbon monoxide. Our group proved that PK with alternating 1,4-dicarbonyl repeating units constitute an ideal starting point to access a wide class of modified polymers by simple Paal-Knorr cyclization, to gain pyrrole-N-bound functional groups stemming from the aliphatic backbone [4-5].Different ion-conducting membranes have been developed and the effect of reaction conditions on their thermal properties, chemical stability, and their conductivity in a wide range of frequencies have been assessed by broadband electric spectroscopy to shed light on the conduction mechanisms [4, 6]. The more promising material developed has been tested in a single cell redox flow battery obtaining promising results.The proposed conducting polymers combine the thermal stability of the aliphatic PK structure with the chemical flexibility given by the groups derived from functionalized amines branching out, proving to be highly tailorable, with possible applications in current energy conversion technologies. Acknowledgements: The authors wish to thank the Research Projects of Relevant National Interest (PRIN 2017) of the Italian Ministry of Education, University and Research “Novel Multilayered and Micro-Machined Electrode Nano-Architectures for Electrocatalytic Applications (Fuel Cells and Electrolyzers)” (Prot. 2017YH9MRK) and SID2020 Project of Department of Industrial Engineering, University of Padova “A New frontier in Hybrid Inorganic-Organic Membranes for Energy Conversion and Storage Devices” (Prot. BIRD201244) for funding.

IMPROVING INDUSTRIAL ENGINEERING STUDENTS' VOCABULARY USING VIDEO AS LEARNING MEDIA

The presence of learning material that piques students' interest is a critical component of educational activities. Media serves as a bridge between teachers and students, facilitating the dissemination of educational materials and aiding comprehension. The breakout of the Covid-19 epidemic in Indonesia impacted Indonesia's school system. Students and professors must engage in educational activities virtually. As a result, the educational media During the Covid-19 pandemic, educators have the option of using audiovisual media to educate students. This study aims to determine whether or not videos as learning media can help students improve their English vocabulary. Individual action research is used in this study, which includes surveys, observations, interviews, and a class test. Qualitative research methodologies were used to analyze 60 second-year students in the industrial engineering department. The study found that lecturers' use of learning videos to teach during the Covid-19 outbreak had a positive impact. To help pupils learn English during the Covid-19 pandemic, media in the form of educational video was deployed.

산업공학 소속 명칭 및 소속 구성원의 인식에 따른 지속가능성 분석

This qualitative analysis focuses on past changing patterns of affiliated industrial engineering (IE) schools and departments. In order to expand IE sustainability, in-depth interviews with several IE professors have been performed. Several issues and opinions for the enhancement of IE have been addressed. Moreover, the sustainability recognition of national-wide IE affiliated professors is investigated. Using these activities and analyses, various proposals and action items are provided to improve IE sustainability.

산업공학에 대한 고등학생 및 진학지도교사 인식 분석

In order to devise impactful agendas to improve the level that students and teachers in high schools recognize industrial engineering, we should analyze how they think about it. Thus, this paper performs the questionnaire survey for the recognition analysis by asking various questions to them. The structure of the questionnaire consists of four sections, including the level of recognition on industrial engineering, intention on application to the departments of industrial engineering, the level of recognition on career fields, and suggestions for improvement on recognizing industrial engineering. We collected the questionnaire results from 126 students and 119 teachers and analyzed the average values of each questions. In addition, we compared the values of each group on the questions by considering the information of students and teachers. Consequently, we found that the recognition level on industrial engineering is mostly low, and students and teachers have different perspectives on industrial engineering. The results can be reflected to come up with a plan to enhance the position of industrial engineering.

정량 분석을 통해 살펴본 산업공학 전공의 현황

In this study, the current status of industrial engineering major is identified through quantitative data analysis to prepare for the fourth industrial revolution and a sharp drop in the school-age population. We have conducted a comparative analysis of industrial engineering with other majors in terms of various indicators related to students, graduates, and research. In addition, we have compared industrial engineering departments by the region and establishment type of universities.

Research Group Introduction: Nagasu Laboratory, Department of Industrial Engineering, Electrical and Electronic Engineering Course, National Institute Technology (KOSEN), Ibaraki College

In our laboratory, we are researching the gate control of semiconductor devices and the technology to extract electric power without contact. This paper introduces an overview of our research.

Morphing Aircraft Wings

Dr Suong Van Hoa, the Department of Mechanical and Industrial Engineering at Concordia University, discusses research that uses an unwanted side-effect to create morphing aircraft wings

Deposition of ITER Vacuum Vessel Dust Inside the Pressure Suppression System During a Loss of Coolant Accident: Experimental and Numerical Analyses

Abstract This paper deals with an experimental and numerical analysis of the deposition of International thermonuclear experimental reactor (ITER) dust simulant inside a reduced scale vacuum vessel pressure suppression system (VVPSS) of ITER. This research, funded by the ITER organization, aims to analyze the dust deposition in a water container in a relevant configuration for the ITER VVPSS, the dust removal by means of robotized apparatuses and their decontamination efficiency. The experimental rig, built at the department of civil and industrial engineering (DICI) of the University of Pisa (Italy), is described and the results of a preliminary experimental test are illustrated. It was measured that two and 82% of the overall injected dust mass was strongly and lightly bound to the water container surfaces, respectively, and 16% were not deposited in the water tank. Furthermore, three numerical analyses were carried out implementing a model of the experimental rig in the Enel code for analysis of radionuclide transport (ECART) to determine the relevance of different parameters on the deposition, resuspension and removal of dust. The numerical simulations allowed to specify dust mass deposition on the different rig components, revealing a strong dust retention (about 66%) in the first part of the injection piping in case of coarse granulometry. Finest lognormal dust distribution was instead able to reach the water container (about 90%). Moreover, the numerical simulations permitted to define more precisely the test matrix and to analyze the experimental results.

Penerapan Media Pembelajaran Pada Mata Pelajaran Sistem Elektropnuematik Berbasis website

This study aims to determine the level of feasibility of the website of the subject electropneumatic controlsystem. Based on early observation data, the Department of Industrial Automation Engineering does not yethave a learning website to support the electropneumatic system learning process. Thus, this study used a research and development (R and D) model with the Waterfall method. However, the subjects involved inthis study were class XI Industrial Automation Engineering Department. The data collection techniqueschosen were interviews and questionnaires with the media evaluation sheet instrument, material evaluationsheet, and user assessment sheet which presented on a Likert scale. The results showed that the websitesupported the learning of electropneumatic system subject had been tested in 8 meetings in the class XI ofIndustrial Automation Engineering. The results of this development research showed that the mediafeasibility test got an average of 75% in the "appropriate" category, the results of the material evaluation testreached an average of 49.7% in the "adequate" category and the assessments from teacher and studenttook an average of 55% with "decent" category. It can be concluded that the website developed iscategorized as "appropriate" to be applied as a learning support in the Department of Industrial AutomationEngineering, especially in the subject of electropneumatic systems. Based on the results, it can besuggested website development on other subject matter to support the success of the learning process.

Identifikasi Pengetahuan Mahasiswa Teknik Industri Terhadap Implementasi Program MBKM dengan Pendekatan Analytical Network Process

<p><strong>Outcome based education is the basis of thinking for the Industrial Engineering Department Program, Al-Azhar University, Indonesia in formulating graduate profiles. Determination of the graduate profile is an important education program so that this study program tries to accommodate the implementation of the <em>Merdeka Belajar Kampus Merdeka</em> (MBKM) program as an alternative learning media that is beneficial for students. This study aims to identify students' knowledge of the implementation of the MBKM program. This study uses an analytical network process approach to rank 5 questions that are the focus of students' attention in implementing the MBKM program. In addition, a descriptive analysis was also conducted on the survey results based on the five priority survey questions. In general, based on the survey, it can be said that the MBKM program has its own charm for students to develop their competencies, skills, and soft skills as a provision for future graduates. In addition, students think that the MBKM program has significant benefits in improving students' abilities. This research is still limited in processing the questionnaire manually. Future research can be continued to carry out data mining on the results of an in-depth student survey. This research has the opportunity to be developed in terms of situational analysis of the MBKM program through the Soft system methodology (SSM) approach. The situational analysis carried out will produce activities that can be carried out for continuous improvement.</strong> </p><p><strong><em>Keywords</em></strong> – A<em>nalytical network process, Decision analysis</em>, I<em>ndustrial engineering department</em>, O<em>utcome based education</em>, S<em>urvey</em></p>

Open and Crowd-Based Platforms: Impact on Organizational and Market Performance

The aim of the research was to present the state of the art on the use of open and crowd-based platforms and the advantages in terms of business performance that emerging practices employing such technologies are able to provide. The analysis was performed by extracting information on emerging practices from the repository Business Process Framework for Emerging Technologies developed by the Department of Industrial Engineering of the University of Salerno (Italy). Contingency tables allowed analysis of the association of such practices with industry, business function, business process, and impact on performance. From the analysis of the results, many implementation opportunities emerge, mainly in manufacturing, healthcare, and transportation industries, providing benefits not only in terms of efficiency and productivity, cost reduction, and information management but also in product/service differentiation. Therefore, the research provides an overview of opportunities for organizations employing open and crowd-based platforms in order to improve market and organizational performance. Moreover, the article highlights in what specific business contexts these technologies can be mainly useful.

SDG-Oriented Supply Chains: Business Practices for Procurement and Distribution

This paper aims at analyzing sustainable practices that can be implemented within supply chains, linking them to Sustainable Development Goals (SDGs) in order to show the performance achieved by SDG-oriented supply chains. Sustainable practices were collected from the repository “Business Process Framework for Sustainability” owned by the Department of Industrial Engineering of the University of Salerno (Italy). By using literature research and descriptive statistics, there emerges a positive relationship between sustainable development and SC performance enhancement. From the study of the practices that can be implemented for cooperation activities with upstream and downstream supply chain partners, it emerges that companies have many opportunities of both supporting the 2030 Agenda and enhancing their market and organizational performance. The research demonstrates that both procurement and distribution processes could be reengineered by implementing sustainable approaches considering all three dimensions of sustainability. Differences emerge in terms of number of opportunities, depending on motivations for implementing them, industry and supply chain processes, performance achieved, and SDGs pursued.

Experimental Test Setup for Deoiling Hydrocyclones Using Conventional Pressure Drop Ratio Control

Summary Produced water is a major challenge in the oil and gas industry, especially with the aging of oil fields. Proper treatment of produced water is important in reducing the environmental footprint of oil and gas production. On offshore platforms, hydrocyclones are commonly used for produced-water treatment. However, maintaining the efficiency of hydrocyclones subjected to plant disturbances is a difficult task owing to their compact nature. This paper describes a new experimental test rig built at the Department of Mechanical and Industrial Engineering at the Norwegian University of Science and Technology for testing industrial-scale hydrocyclones. The test setup can emulate first-stage separation and create plant disturbances, such as changes in flow rate, oil concentration, and oil droplet distribution at the inlet of the hydrocyclones. Also, the setup is capable of testing different control algorithms, which helps to maintain the efficiency of hydrocyclones in the presence of such disturbances. The test rig is equipped with various instruments that can monitor such parameters as pressure, flow, temperature, and oil concentration. A typical pressure drop ratio (PDR) control scheme for hydrocyclones is tested in the test rig, which can control the disturbances in the inflow rate. The PDR control scheme does not detect disturbances in the inlet oil concentration and changes in droplet distribution, and these scenarios are shown experimentally in this paper.