Operations Research, Systems Engineering and Industrial Engineering Commons^™

Surface And Subsurface Damages In Rotary Ultrasonic Machining Of Ceramics: A Molecular Dynamics Method With Experimental Study, Yasser Hamouda Ahmed

Dissertations

Rotary ultrasonic machining (RUM) is one of the advanced machining processes for ceramics. Although many research papers about RUM have been published, there are very limited studies focusing on the effects of ultrasonic vibration on surface and subsurface damages. In this research, the surface and subsurface damages are compared for machining of dental ceramics (Al₂O₃) with and without ultrasonic vibration. The surface chippings are evaluated under microscope and the subsurface cracks are observed and quantified under scanning electron microscope (SEM). The contribution of this research is directed to use Molecular Dynamics (MD) method, which plays an …

Joint Determination Of Rack Configuration And Shelf Space Allocation To Maximize Retail Impulse Profit, Uttam Karki

Browse all Theses and Dissertations

For brick-and-mortar retailers to be successful, it is critical for them to optimally design their rack layout and place products in order to draw attention of shoppers. Literature suggests that racks placed at acute (or obtuse) angles to the main aisle frequented by shoppers can enhance visibility of products compared to racks placed orthogonally (i.e., 90˚). Placing products with high impulse purchase potential in the resulting highly visible locations on the rack can increase shopper impulse purchases. However, placing racks at angles other than 90˚ can increase the required floor space. Additionally, while reducing the height of the racks just …

Natural Resources Governance Employing Blockchain-Based Decision-Making, Farinaz Sabz Ali Pour, Adrian Gheorghe

Engineering Management & Systems Engineering Faculty Publications

Natural resources are essential structures of socio-economic systems which shape the well-being of humanity, environment, and the economy. Human actions have become the critical responsibility for environmental changes and pressuring many planetary boundaries. Having a systematic approach can provide a governance platform including the inherent characteristics of the resource, the historically established form of use, and transaction costs. A natural resource governance framework is developed by applying Blockchain technology as the primary goal of this study to regulate and manage the extraction and trades. Blockchain technology provides a distributed concurrency monitoring system for sustainable resource management. Persistent and pervasive cooperation …

Sems Says...: We Welcome Your Feedback, Brian K. Smith, Chinweike Eseonu, Sreekanth Ramakrishnan, Pilar Pazos-Lago

Engineering Management & Systems Engineering Faculty Publications

The article offers information on the IISE Annual Conference Expo 2019 to be held on May 18-21, 2018 in Orlando, Florida, for industrial and systems engineers.

The Challenges And Barriers Facing Successful Lean Implementation In The Qatari Manufacturing Organizations, Abdulwahab Alyousef

Electronic Theses and Dissertations

The success of Toyota, the inventor of Lean Systems has drawn the attention of academics, researchers, and executives in the last decades. However, existing lean research is largely focused on developed economies in Europe, the Americas, and in Southeast Asia with little focus on the Arab world in general and Qatar specifically. There has been an emergence of manufacturing organizations and Small and Medium- sized Enterprises (SME) in Qatar recently which was the focus of this research. Despite the many attempts to implement lean in organizations, there have been a large number of failed attempts. This research aims to study …

Multi-Level Optimization With Pricing Strategy Under Boundedly Rationality User Equilibrium, Guanxiang Yun

Electronic Theses and Dissertations

We study multi-level optimization problem on energy system, transportation system and information network. We use the concept of boundedly rational user equilibrium (BRUE) to predict the behaviour of users in systems. By using multi-level optimization method with BRUE, we can help to operate the system work in a more efficient way. Based on the introducing of model with BRUE constraints, it will lead to the uncertainty to the optimization model. We generate the robust optimization as the multi-level optimization model to consider for the pessimistic condition with uncertainty. This dissertation mainly includes four projects. Three of them use the pricing …

Trade-Off Balancing For Stable And Sustainable Operating Room Scheduling, Amin Abedini

Theses and Dissertations--Mechanical and Aerospace Engineering

The implementation of the mandatory alternative payment model (APM) guarantees savings for Medicare regardless of participant hospitals ability for reducing spending that shifts the cost minimization burden from insurers onto the hospital administrators. Surgical interventions account for more than 30% and 40% of hospitals total cost and total revenue, respectively, with a cost structure consisting of nearly 56% direct cost, thus, large cost reduction is possible through efficient operation management. However, optimizing operating rooms (ORs) schedules is extraordinarily challenging due to the complexities involved in the process. We present new algorithms and managerial guidelines to address the problem of OR …

Factors Affecting Systems Engineering Rigor In Launch Vehicle Organizations, Denton Gibson

Electronic Theses and Dissertations

Systems engineering is a methodical multi-disciplinary approach to design, build, and operate complex systems. Launch vehicles are considered by many extremely complex systems that have greatly impacted where the systems engineering industry is today. Launch vehicles are used to transport payloads from the ground to a location in space. Satellites launched by launch vehicles can range from commercial communications to national security payloads. Satellite costs can range from a few million dollars to billions of dollars. Prior research suggests that lack of systems engineering rigor as one of the leading contributors to launch vehicle failures. A launch vehicle failure could …

A Framework To Develop Anomaly Detection/Fault Isolation Architecture Using System Engineering Principles, Thomas Clark

Electronic Theses and Dissertations

For critical systems, timely recognition of an anomalous condition immediately starts the evaluation process. For complex systems, isolating the fault to a component or subsystem results in corrective action sooner so that undesired consequences may be minimized. There are many unique anomaly detection and fault isolation capabilities available with innovative techniques to quickly discover an issue and identify the underlying problems. This research develops a framework to aid in the selection of appropriate anomaly detection and fault isolation technology to augment a given system. To optimize this process, the framework employs a model based systems engineering approach. Specifically, a SysML …

The Challenges And Barriers To Employment For Female In Riyadh And Tabuk, Sultan Almutairi

Electronic Theses and Dissertations

Women labor force participation plays an important role in economic. The developing in economy in Saudi Arabia depends on men rather than women, more than 50 years the Saudi women participation in the labor force extremely is low, this dissertation seeks to identify the challenges and barriers to employment for women in Riyadh and Tabuk. This study examines three research questions. The first question explored the difference between the rate of women unemployment in Tabuk and the rate of women unemployment in Riyadh. The second question investigated ways in which a logistic regression using demographics data could be used to …

A Methodology For Data-Driven Decision-Making In Last Mile Delivery Operations, Edgar Gutierrez Franco

Electronic Theses and Dissertations

Across all industries, from manufacturing to services, decision-makers must deal day to day with the outcomes from past and current decisions that affect their business. Last-mile delivery is the term used in supply chain management to describe the movement of goods from a hub to final destinations. This research proposes a methodology that supports decision making for the execution of last-mile delivery operations in a supply chain. This methodology offers diverse, hybrid, and complementary techniques (e.g., optimization, simulation, machine learning, and geographic information systems) to understand last-mile delivery operations through data-driven decision-making. The hybrid modeling might create better warning systems …

Technological Cooperation Network In Biotechnology Analysis Of Patents With Brazil As The Priority Country, Cristiano Goncalves Pereira, Rodrigo Ribeiro Da Silva, Joao Ricardo Lavoie, Geciane Silveira Porto

Engineering and Technology Management Faculty Publications and Presentations

Purpose – The establishment of partnerships between companies, government and universities aims to enhance innovation and the technological development of institutions. The biotechnology sector has grown in recent years mainly driven by its cooperative business model. Compared to other countries, this sector is slowly advancing in Brazil, with delays in science, technology and innovation, especially in the private sector. This paper aims to examine, through social network analysis, the collaborative networks between institutions that filed patents in biotechnology – medicinal preparations from plants – whose inventions had Brazil as the priority country. Design/methodology/approach – The study of technological cooperation using …

A Preliminary Strategic Framework For Enhancing The Sustainability Of International Technology Transfer: The Case Of Libya, Rafaa Ibrahim Khalifa, Maoloud Dabab, Husam Barham

Engineering and Technology Management Faculty Publications and Presentations

International Technology Transfer (ITT) has played a crucial role not only in the industrial growth of developing countries but also in enhancing the competitiveness of their enterprises in the global market. Libya is a North African country that is currently shifting from a strictly petroleum/mineral based economy to a broad-based economy competing with distinct advantages through selecting, planning, and adopting the right technology for the domestic market. This significant transition requires strategic access to global technology transfer. In this paper, a preliminary strategic framework is designed to enhance the sustainability of the ITT process from international donators to the Country …

Developing Framework For The Implementation Of Advanced Manufacturing Technologies In Small And Medium-Sized Enterprises, Dattatraya V. Bhise, Vivek K. Sunnapwar

International Journal of Applied Management and Technology

Intense competition, demanding customers, and shortening product life cycles are prompting small- and medium-sized enterprises to invest in advanced manufacturing technologies (AMTs). Small manufacturers often depend on large manufacturers for orders and so require design as well as manufacturing flexibility on their part. One way of achieving the flexibility is through adoption of AMTs. The decision to invest in AMT is a major decision and thus requires proper consideration to all the aspects of the implementation process before a final commitment is made. Although the technical capabilities of AMTs are well proven, neither practitioner nor academics agree upon a framework …

Effects Of A Hand Luggage Guiding System On Airplane Boarding Time And Passenger Experience, Mirte Vendel, Sagar Dangal, Jessica Coppens, Suzanne Hiemstra-Van Mastrigt, Peter Vink

International Journal of Aviation, Aeronautics, and Aerospace

This research investigates whether a hand luggage guiding system in overhead bins decreases boarding time and improves boarding experience during aircraft boarding process. A guiding system was developed which allocates and displays the passengers luggage space in the overhead bin. The allocated space is guided by a light strip in front of the display that blinks when a passenger comes close to their allocated luggage space. This system was tested in a Boeing 737 test fuselage. Compared to regular boarding, a boarding time reduction of 16 to 23 seconds was estimated using the hand luggage guiding system in groups of …

Global Aviation System: Towards Sustainable Development, Marina P. Bonser Dr.

International Journal of Aviation, Aeronautics, and Aerospace

Aviation around the world has integrated into a global system. As the integration process continues, more aspects and levels of it need to be lead towards the sustainable development of the whole system via advancing strategic management, global communication proficiency, and technological expertise. It becomes essential to enrich global language (English) proficiency with cross-cultural communication competence not only for communication in the air but also for airport security, passenger and cargo services, aircraft and equipage engineering, building, and maintenance. Nowadays lower levels of management need more advanced strategic thinking and problem solving skills, and higher levels of management need global …

Autonomous Airliners Anytime Soon?, Samuel M. Vance, Evan C. Bird, Daniel J. Tiffin

International Journal of Aviation, Aeronautics, and Aerospace

This research seeks to extend the body of knowledge on factors influential in the decision to fly on an autonomous airliner as a passenger. Only a handful of studies have probed this direct question in the last 16 years, but the data is showing a growing public acceptance of this type of travel. Pivotal in this consideration is the basic element of trust – trust in automated airliners and trust in the airline and Air Traffic Control systems which are responsible for autonomous airliners. Human trust has many forms and manifestations, but in the end, it is a dichotomous or …

Effects Of Exit Doors And Number Of Passengers On Airport Evacuation Effeciency Using Agent Based Simulation, Jie Chen, Dahai Liu, Sirish Namilae, Sang-A Lee, Jennifer E. Thropp, Younho Seong

International Journal of Aviation, Aeronautics, and Aerospace

Many factors determine the efficiency of evacuation at an airport during emergencies. These factors are very complicated and many times, unpredictable. The Federal Aviation Administration provides numerous advisory circulars and regulations for managing airport evacuation. However, a thorough literature review suggests that research on airport evacuation is still very limited. A study was designed to simulate an airport evacuation to address this problem. This study selected a local certificated airport in the United States for this purpose. We developed and validated a situation model using AnyLogic to investigate evacuation time at this airport. Using different variables, such as the number …

Process Improvement Of Housing Loan Product In Thailand Commercial Bank, Araya Santitrakulvech

Chulalongkorn University Theses and Dissertations (Chula ETD)

According to digital disruption has become key factor that stimulates changing in business nowadays including banking business. To respond through rapid change in customer behavior and become competitive among rivals, this research is aimed to improve business process of housing loan product in one of commercial banks in Thailand which is mainly operated in manual operation and paper process and believed to be main symptoms of bottleneck in lending process. The main objective of this research is to reduce lead time of housing loan business by going through the detail of business process to reveal wastes or non-value-added activities using …

A Study Of Price Elasticity Of Demand And Its Application In First Mile/Last Mile Service Collaboration Between Mass Transit And Ride Sharing Providers, Voragorn Warapiankul

Chulalongkorn University Theses and Dissertations (Chula ETD)

Since today, Bangkok faces the big pollution and low mobility. One main reason is Bangkok people tend to travel by automobiles instead of the transit. The main problem of Bangkok transit especially Bangkok metro is the low accessibility to travel to/from the transit nodes and between nodes or as called First Mile Last Mile problem. Moreover, Bangkok metro transit fare is claimed that is too expensive compared to the cost of living and minimum wages in Bangkok. This research aims to study the price elasticity of demand for Bangkok metro which is the indicator of fare demand management in Bangkok …

การประยุกต์ใช้ตะกอนจากอุตสาหกรรมเหมืองแร่หินเพื่อการผลิตอิฐเผา, ณัฐวุฒิ ธงชัย

Chulalongkorn University Theses and Dissertations (Chula ETD)

งานวิจัยนี้มีวัตถุประสงค์เพื่อทำการวิเคราะห์หาสัดส่วนดินตะกอนจากอุตสาหกรรมเหมืองหินไปขึ้นรูปผลิตภัณฑ์เป็นอิฐดินตะกอนโดยใช้ดินเหนียวเป็นส่วนผสม งานวิจัยเริ่มจาก1) วิเคราะห์คุณสมบัติของตะกอนเพื่อหาองค์ประกอบของแร่ธาตุและสารประกอบที่พบในดินตะกอน 2) ทำการออกแบบการทดลองเพื่อพัฒนาผลิตภัณฑ์อิฐดินตะกอนจากเหมืองหิน โดยมีตัวแปรต้นได้แก่ สัดส่วนผสมระหว่างตะกอนจากเหมืองและดินเหนียวตั้งแต่ร้อยละ 40 ถึง80 โดยน้ำหนัก และเผาที่อุณหภูมิ 900, 1000 และ1100 องศาเซลเซียส 3) ทำการทดสอบคุณสมบัติเชิงกลและเชิงกายภาพของผลิตภัณฑ์แล้วสรุปผลงานวิจัย จากการศึกษาพบว่าที่อุณหภูมิ 1100 องศาเซลเซียส และสัดส่วนของดินตะกอนต่อดินเหนียวเป็น 60:40 ให้ความต้านแรงอัดสูงสุด เท่ากับ 43.67 เมกกะปาสคาล ซึ่งสูงกว่าอิฐมอญและอิฐดินเผา คิดเป็น 49.95 และ33.6 เปอร์เซ็นต์ ตามลำดับ ในขณะที่ค่าอัตราการดูดซึมน้ำของอิฐดินตะกอนจากเหมืองที่สัดส่วนดังกล่าวมีค่าเท่ากับ 11.53 เปอร์เซ็นต์ ซึ่งสูงกว่าอิฐมอญและอิฐดินเผาถึง 53.87 และ 67.63 เปอร์เซ็นต์ ส่วนค่าความหนาแน่นและค่าสูญเสียน้ำหนักของอิฐดินตะกอนจากเหมืองมีค่าเท่ากับ 1.37 กรัมต่อลูกบาศก์เซนติเมตร และ 17.37 เปอร์เซ็นต์ ตามลำดับ นอกจากนี้ต้นทุนการผลิตของอิฐดินตะกอนจากเหมืองมีค่าต่ำกว่าอิฐดินเผา 24.76 เปอร์เซ็นต์

Can Fitts' Throughput Be A Predictor Of Muscle Fatigue – A Study Based On Metacarpal Gloves?, Sachin Sah

Graduate Theses, Dissertations, and Problem Reports (ETD)

In this study, Fitts’ throughput was used to estimate throughput for metacarpal gloves. Fitts’ throughput combines speed and accuracy during target transfer/movement tasks into a single performance index. It was hypothesized that the throughput will be affected by the glove condition and it will exhibit a relationship with the physiological response of hand muscles and perceived exertions. Fifteen healthy participants (10 males, 5 females) were recruited for data collection. Each participant performed a series of target transfer tasks using four glove conditions: (1) a pigskin leather (glove 1); (2) a synthetic fiber glove (glove 2); (3) a goat-grain leather glove …

Performance Study Of An Unconventional Breathresponse Papr Against A N95 Ffr And Conventional Paprs, Huihui Yang

Graduate Theses, Dissertations, and Problem Reports (ETD)

Healthcare workers (HCWs) are the first responders when infectious pathogens occur. Powered air-purifying respirators (PAPRs) are one of the most widely used personal protective equipment for healthcare workers. Currently, few studies have been performed with HCWs in the actual healthcare work environments to assess discomforts, acceptance and protective efficiency towards wearing and use of PAPRs. The main purpose of this dissertation was to introduce and assess a brand new unconventional PAPR (Koken breath-response PAPR). The protection performance and user preferance of this unconventional PAPR were studided and compared to that of a N95 FFR and traditional PAPRs.

Firstly, a laboratory …

Development Of A Task Analysis Tool To Estimate Shoulder Strain During A Lifting Task, Christopher Wayne Moore

Graduate Theses, Dissertations, and Problem Reports (ETD)

Musculoskeletal disorders of the shoulder have a huge impact on the workplace and employees. Due to the complexity and high mobility of the shoulder, developing a task analysis tool with a focus on the shoulder is difficult, and while there are some ergonomic analysis tools that do consider the shoulder to varying degrees in the analysis, none focus purely on the shoulder. Therefore, this research was undertaken in an attempt to develop a shoulder-based task analysis tool for the shoulder. However, since the scope of work involving the shoulder is so vast, the tool in this research focuses on unobstructed, …

Towards A Framework For Smart Manufacturing Adoption In Small And Medium-Sized Enterprises, Sameer Mittal

Graduate Theses, Dissertations, and Problem Reports (ETD)

Smart Manufacturing (SM) paradigm adoption can scale production with demand without compromising on the time for order fulfillment. A smart manufacturing system (SMS) is vertically and horizontally connected, and thus it can minimize the chances of miscommunication. Employees in an SME are aware of the operational requirements and their responsibilities. The machine schedules are prepared based on the tasks a machine must perform. Predictive maintenance reduces the downtime of machines. Design software optimizes the product design. Production feasibility is checked with the help of simulation. The concepts of product life cycle management are considered for waste reduction. Employee safety, and …

Pharmaceutical Scheduling Using Simulated Annealing And Steepest Descent Method, Bryant Jamison Spencer

Graduate Theses, Dissertations, and Problem Reports (ETD)

In the pharmaceutical manufacturing world, a deadline could be the difference between losing a multimillion-dollar contract or extending it. This, among many other reasons, is why good scheduling methods are vital. This problem report addresses Flexible Flowshop (FF) scheduling using Simulated Annealing (SA) in conjunction with the Steepest Descent heuristic (SD).

FF is a generalized version of the flowshop problem, where each product goes through S number of stages, where each stage has M number of machines. As opposed to a normal flowshop problem, all ‘jobs’ do not have to flow in the same sequence from stage to stage. The …

Space Dynamics Laboratory Payload Challenge: Autonomous Water Sampling Uav, Thomas Wheeler, Zachary Williams, Joseph Stack

Williams Honors College, Honors Research Projects

The following report has been completed over the course of the Fall 2018 and Spring 2019 semesters at The University of Akron by Joseph P. Stack (Aerospace Systems Engineering), Thomas J. Wheeler (Mechanical Engineering) and Zachary M. Williams (Mechanical Engineering). The purpose of this project was to create a payload system for the Akronauts Rocket Design Team to use at the Intercollegiate Rocket Engineering Competition (IREC) Spaceport America Cup. The Competition as a challenge that is sponsored by Space Dynamics Laboratory specifically regarding payload systems. The challenge in very open-ended and allows student to identify their own scientific experiment and …

Analysis Of Bus Ride Comfort Using Smartphone Sensor Data, Hoong-Chor Chin, Xingting Pang, Zhaoxia Wang

Research Collection School Of Computing and Information Systems

Passenger comfort is an important indicator that is often used to measure the quality of public transport services. It may also be a crucial factor in the passenger’s choice of transport mode. The typical method of assessing passenger comfort is through a passenger interview survey which can be tedious. This study aims to investigate the relationship between bus ride comfort based on ride smoothness and the vehicle’s motion detected by the smartphone sensors. An experiment was carried out on a bus fixed route within the University campus where comfort levels were rated on a 3-point scale and recorded at 5-second …

The Development Of The Human-Automation Behavioral Interaction Task (Habit) Analysis Framework, Isabelle Catherine Baird

Browse all Theses and Dissertations

Complex systems involve the collaboration of automated agents and goal-oriented human operators in a dynamic environment, and dynamic environments required dynamic automation. The implementation of automation fundamentally changes the nature of the cognitive demands by means of changing the role of the human operator. The augmentation of operator situation awareness has become a major design objective in the development of human-automated systems. Extensive literature identified the out-of-the-loop performance problem as a human-automation interaction challenge. This thesis presents the Human-Automation Behavioral Interaction Task (HABIT) Analysis, as a novel approach to assessing human-automation interaction challenges, such as out-of-the-loop consequences. The novel framework …

Agent-Based Simulation Of Artificial-Intelligence-Assisted Transfer Of Care, Paul B. Stone

Browse all Theses and Dissertations

This study demonstrates the application of Agent-Based Simulation as a potential training aid for Transfer of Care (ToC) between EMS and a hospital triage department. The specific aim was to develop a simulation to increase the efficiency and accountability of information communication during ToC to test the suitability of Agent-Based Simulation to address training requirements in complex, health provision settings. This paper focuses on the design of the training simulation, including the development of individual agents within the simulation through the user interface elements and the evaluation and verification of the prototype simulator. The primary objective is for the simulation …