Operations Research, Systems Engineering and Industrial Engineering Commons^™

A Framework For Determining The Reliability Of Nanoscale Metallic Oxide Semiconductor (Mos) Devices, Wilkistar Otieno

USF Tampa Graduate Theses and Dissertations

An increase in worldwide investments during the past several decades has pro-pelled scienti c breakthroughs in nanoscience and technology research to new and exciting levels. To ensure that these discoveries lead to commercially viable prod-ucts, it is important to address some of the fundamental engineering and scientific challenges related to nanodevices. Due to the centrality of reliability to product integrity, nanoreliability requires critical analysis and understanding to ensure long-term sustainability of nanodevices and systems. In this study, we construct a relia-bility framework for nanoscale dielectric lms used in Metallic Oxide Semiconductor (MOS) devices. The successful fabrication and incorporation of metallic …

Silicon Oxide Micromodule Capacitors, W. B. Nowak, J. J. O'Connor

Welville B. Nowak

Silicon oxide capacitors have been developed on micromodule wafers (0.310-in. sq. with three termination notches per side). Each microelement contains 1, 2, 3, or 4 capacitors with values of 1120 and 560, 180, 100 and 68 pf per capacitor, respectively. The 1120 pf capacitor is double layered. In addition to the general requirements of microelements and micromodules, some of the more important specifications these capacitors must meet are: dissipation factor (DF) not exceeding 0.015, insulation resistance (IR) at 50 volts exceeding 10,000 megohms (25°C) and 750 megohms (125°c), 50 WVDC and 150 volts dielectric withstanding voltage (DWV), Δ C not …

Structural And Magnetic Characterization Of Amorphous Gd₂Fe₁₄B Thin Films, S. E. Bushnell, P. C. Dorsey, W. B. Nowak, C. Vittoria

Welville B. Nowak

Thin amorphous films of nominal composition Gd₂Fe₁₄B were fabricated on Si (100) substrates using ion‐beam sputtering for the purpose of establishing their structural and magnetic properties at room temperature. X‐ray‐diffraction scans performed on as‐deposited and annealed films revealed an amorphous structure. The as‐deposited saturation magnetization was found to be 8101 G at room temperature suggesting ferrimagnetic ordering with anti‐parallel coupling similar to other heavy rare earth‐transition metal systems. Results from in‐plane and perpendicular ferromagnetic resonance experiments conducted at 9.108 GHz showed the films to be inhomogeneous. This was evident from the presence of two in‐plane resonance lines and spin‐wave spectra …

The Measurement Of Magnetostriction Constants Of Thin Films Using Planar Microwave Devices And Ferromagnetic Resonance, S. E. Bushnell, W. B. Nowak, S. A. Oliver, C. Vittoria

Welville B. Nowak

In this paper we introduce a new technique for measuring the saturation magnetostriction constant (λs) for isotropic polycrystalline thin films. The technique makes use of nonresonant planar microwave structures together with a novel stressing mechanism to induce a shift in the resonant field of a magnetic thin film as measured by a ferromagnetic resonance (FMR) experiment. Measurement of the shift induced by a uniaxial stress allows for determination of λs via a magnetic resonance analysis. Either a slotline device or coplanar waveguide (CPW) was used as the source of the microwave excitation field depending upon the orientation of the dc …

Magnetic And Structural Investigation Of Heat Treated Ion Beam Sputtered Amorphous Co₇₄Fe₆B₁₅Si₅ Films, V. G. Harris, S. A. Oliver, W. B. Nowak, C. Vittoria, R. J. Culbertson, W. T. Elam, K. H. Kim

Welville B. Nowak

As-deposited and annealed specimens of ion beam sputtered amorphous Co₇₄Fe₆B₁₅Si₅ thin films were examined to explore the correlation between changes in magnetic properties and atomic structure. Specimens were characterized magnetically, by traditional ac and dc techniques and structurally, via conversion-electron extended x-ray absorption fine structure analysis. Results show significant ordering of the higher order atomic shells around the transition metal ions well below the crystallization temperature. This ordering evolves into a body- centered-cubic configuration around both the Co and Fe ions. Increases in nearest neighbor peak positions in the EXAFS Fourier transforms were observed to correlate with increasing annealing temperatures. …

Magnetic And Microwave Properties Of Ion-Beam-Sputtered Amorphous Feₓco₈₀₋ₓb₁₅Si₅ Films, V. G. Harris, S. A. Oliver, W. B. Nowak, C. Vittoria

Welville B. Nowak

Magnetically soft amorphous films of FeₓCo₈₀₋ₓB₁₅Si₅ (x = 0, 6, 23, 40, 70, 80) were ion beam sputter deposited onto fused quartz for static and microwave magnetic characterization. Films ranged in thickness from 220 to 260 nm and were deposited at rates of 0.1-0.2 nm/s. Saturation magnetization, coercivity, and loop squareness values were extracted from hysteresis loops generated by a vibrating sample magnetometer. Ferromagnetic resonance measurements were taken using a 9.5-GHz cavity with the applied magnetic field both parallel and perpendicular to the plane of the film, yielding values for the g factor, anisotropy field, effective magnetization, and linewidth. Well …

Effects Of Boron Implantation In Films Of Iron-Nickel, J. Ryu, K. Castell, W. Nowak, C. Vittoria

Welville B. Nowak

We have implanted boron ions into films of Fe-Ni alloy composition. A homogeneous distribution of boron was determined from the sputter Auger analysis with a concentration of 18% and 34% for low- and high-dose implantation, respectively. The resistivity of film was increased by a factor of 2 and 4 as a result of low- and high-dose implantation, respectively. The magnetic properties of these films are studied as a function of annealing temperature by using FMR measurements. Both the uniaxial anisotropy field and FMR linewidth are dramatically decreased as a result of annealing at elevated temperatures. The changes of effective magnetization …

An Improved Ant Colony System For A Real Time Routing Strategy, Hannaneh Rashidi-Bajgan, Taravatsadat Nehzati, Napsiah Ismail

Hannaneh Rashidi-Bajgan

There is a large number of literatures about routing and dispatching plans for automated guided vehicle system (AGVS), however a small fraction of these works dealt with dynamic characteristic of this kind of scheduling problems. Current paper surveys a real time strategy to responding requests for supposed material handling system in the plant. We arranged this designing on a preplanned system where all data are known before the constructing routes. An improved ant colony optimization (ACO) is applied in order to find the shortest route path as new solicitations happened. We explore ACO initially for static version of the problem, …

The Effectiveness Of Virtual R&D Teams In Smes: Experiences Of Malaysian Smes, Nader Ale Ebrahim, Shamsuddin Ahmed, Salwa Hanim Abdul Rashid, Zahari Taha

Nader Ale Ebrahim

The number of small and medium enterprises (SMEs), especially those involved with research and development (R&D) programs and employed virtual teams to create the greatest competitive advantage from limited labor are increasing. Global and localized virtual R&D teams are believed to have a high potential for SMEs growth. Due to the fast growing complexity of the new product, coupled with new emerging opportunities of virtual teams, a collaborative approach is believed to be the future trend. This research explores the effectiveness of virtuality in SMEs virtual R&D teams. An online questionnaire emailed to Malaysian manufacturing SMEs and 74 usable questionnaires …

Virtual R&D Teams: A Potential Growth Of Education-Industry Collaboration, Nader Ale Ebrahim, Shamsuddin Ahmed, Salwa Hanim Abdul Rashid, Zahari Taha

Nader Ale Ebrahim

In this paper, we present our more than two years research experiences on virtual R&D teams in small and medium-sized enterprises (SMEs) and draws conclusions, giving special attention to the structure of virtual teams required to support education-industry collaboration. We report the relevant results of an online survey study. The online questionnaire was emailed by using a simple random sampling method to 947 manufacturing SMEs. The findings of this study show that SMEs in Malaysia and Iran are willing to use virtual teams for collaboration and the platform for industry-education collaboration is ready and distance between team members or differences …

A Conceptual Model For Development Of New Product In Smes By E-Collaboration And Project Management, Marjan Mohammadjafari, Shamsuddin Ahmed, Siti Zawiah Md Dawal, Hadi Zayandehroodi

Dr. Marjan Mohammadjafari

No abstract provided.

Innovating Continuous Review Policies With Rfid, Angela Garza

Department of Industrial and Management Systems Engineering: Dissertations, Theses, and Student Research

Inventory accuracy is critical for NASA astronauts in space. In 2004, astronauts onboard the International Space Station (ISS) nearly had to de-man their outpost due to the fact the replenishment of consumables were uncertain. Automated Identification Technologies (AITs) such as Radio Frequency Identification (RFID) can be utilized to minimize the occurrence of situations like this one. RFID has been used to aid inventory management systems by providing real time availability of the item information including location and status. The benefit of RFID over barcodes is immense as it allows users to employ continuous review models. Barcodes are only capable of …

Evaluating Obselete Inventory Policies In A Hospital's Supply Chain, Maurice D. Cavitt

Department of Industrial and Management Systems Engineering: Dissertations, Theses, and Student Research

Numerous organizations are currently facing inventory management problems including distributing inventory on time and maintaining the appropriate inventory level to satisfy the end user. Organizations understand the importance of inventory accuracy as any error will increase the purchasing and holding costs affecting investment decisions. Lack of information about effective measures that will allow management to make important business decisions motivated this research to identify a decision criterion for warehouse management. A feasible solution of calculating the carrying cost ratio from purchasing and holding cost is the main objective of this thesis. The carrying cost ratio will allow managers to make …

Evaluation Of Optimization Algorithms For Improvement Of A Transportation Companies (In-House) Vehicle Routing System, Jian Han

Department of Industrial and Management Systems Engineering: Dissertations, Theses, and Student Research

Vehicle routing problem (VRP) is the main issue of the transportation. It is becoming more and more popular. Trucking companies play an important role in the transportation industry. Most trucking companies are developing their own software to make profit. Often, the software is used for routing optimization models to minimize cost because the first work is organized over the road.

Linear Programming and saving heuristics are traditional algorithms for solving the vehicle routing problems. However, none of the companies want to make a decision of routing by calculating with mathematics models in their companies. So the vehicle routing software is …

A Predictive Modeling For Water Consumption And Wastewater Flow Management For A Food Processing Manufacturer, Jairo A. De Jesus

Department of Industrial and Management Systems Engineering: Dissertations, Theses, and Student Research

The City of Cumming, GA, issues special permits for industrial users of sewer services, who meet one or more criteria of discharge regulations. The criteria includes discharge of 25,000 gallons per day or more of processed wastewater, the presence for the potential to inhibit the Advanced Water Reclamation Facility (AWRF) treatment processes, the potential to cause AWRF’s bio-solids to be contaminated, and other regulations. The Food Processing Manufacturer in this study is a meat processing facility (processes pork cooked sausage) and its operation and associated wastewater treatment plant meets at least one of the criteria requiring a special sewer service …

Expansion In Existing And Future Franchises, Shane Hart, Daniel Jeng

Industrial and Manufacturing Engineering

Zensho Group has recently acquired the restaurant US based chains CoCo’s and Carrows but has not been able to affirm the same growth as the company has established in its home country of Japan. In order to fulfill their need to grow, extensive market analysis and research needs to be done. An expansion eastward and the introduction of their flagship restaurant chain, Sukiya, would offer growth potential. Determining the best locations for these new stores is the goal of this project. Low cost and high market penetration potential will be used to recommend the ideal locations that will benefit the …

Sustainable Climate Control For Mid-Rise Office Building In The Salt Lake Valley, Philip M. Coleman

Industrial and Manufacturing Engineering

This report examines the sustainability of Trane’s EarthWiseTM climate control systems in the Salt Lake Valley (and the United States Mountain West in general). A simulation is performed to determine the best climate control system for a LEED Silver, 5-story tenant office building. This new building is a duplication of a pre-existing building. The climate control system installed at the preexisting building is used as a baseline against which three (3) alternative systems are compared. The social, ecological, and economic impact of each alternative is examined to determine which is the most sustainable. Since the baseline system is a proven …

Automation Of Pillow Speaker Button Testing To Avoid Repetitive Strain Injuries In Testing Technicians, Tyler P. Finnegan

Industrial and Manufacturing Engineering

Abstract Anacom MedTek, a medical device company, produces pillow speakers as their main product line. Pillow speakers are a healthcare communications tool that allow for hospital patients to control many entertainment and environmental components of the hospital room from one controller. These pillow speaker devices have anywhere from 3 to 27 metal dome key cap buttons based on their customization. Before they can be shipped to a customer, each button must be tested to ensure that it is functioning properly. This test is currently done manually by a testing technician. With so many buttons to be tested for each unit …

Pull Production System Training Guide, Adem Bilgutay

Industrial and Manufacturing Engineering

This book is a series of lessons designed to train operators and managers in pull manufacturing. It begins with a description of the different forms of waste that a system can help to identify and eliminate. The second section details the kanban as a system for controlling flow and as a powerful tool for identifying problems. It will describe the many different variations of kanban that exist to control flow in different production environments and the calculations that allow them to be used effectively. The final section will detail the activities that an operator should engage in when there is …

A Practical Approach To Computer Donation Supply Chain For Non-Profit Organizations, John Jacob Burrell, Adam Robert Carpenter

Industrial and Manufacturing Engineering

The United States today has a plethora of unused electronic equipment. This equipment comes from universities, small businesses, corporations, and many other sources. This project looks at the best way to put this equipment back to use for the remainder of its usable life by donating it to non-profit organizations in need. In order to complete this project it was necessary to research the areas of Supply Chain Management, Operations Research, and Engineering Economics. The approach for this specific project first involves analyzing the current donation process at California Polytechnic State University – San Luis Obispo, and its ability to …

Coordinating Production And Recycling Decisions With Stochastic Demand And Return, Jianmai Shi, Guoqing Zhang, Jichang Sha, Saman Hassanzadeh Amin

Mechanical, Automotive & Materials Engineering Publications

In this paper, the joint production and recycling problem is investigated for a hybrid manufacturing and remanufacturing system where brand-new products are produced in the manufacturing plant and recycled products are remanufactured into as-new products in the remanufacturing facility. Both the brand-new products and remanufactured products are used to satisfy customer demands. Returns of used products that are recycled from customers are assumed to be stochastic and nonlinearly price-dependent. A mathematical model is proposed to maximize the overall profit of the system through simultaneously optimizing the production and recycling decisions, subject to two capacity constraints — the manufacturing capacity and …

An Investigation Of Metaheuristics Using Path- Relinking On The Quadratic Assignment Problem, Thashika Rupasinghe

All Dissertations

The Quadratic Assignment Problem (QAP) is a widely researched, yet complex, combinatorial optimization problem that is applicable in modeling many real-world problems. Specifically, many optimization problems are formulated as QAPs. To resolve QAPs, the recent trends have been to use metaheuristics rather than exact or heuristic methods, and many researchers have found that the use of hybrid metaheuristics is actually more effective. A newly proposed hybrid metaheuristic is path relinking (PR), which is used to generate solutions by combining two or more reference solutions. In this dissertation, we investigated these diversification and intensification mechanisms using QAP. To satisfy the extensive …

A Meta-Analysis Of Human Factors Analysis And Classification System Causal Factors: Establishing Benchmarking Standards And Human Error Latent Failure Pathway Associations In Various Domains, Katherine Berry

All Dissertations

Many models of accident investigation have been created and have served as the basis for other tools and techniques. One of the most prominent techniques, Reason's Swiss Cheese Model (1990), is based on the idea of active and latent failures. Expanding on this idea, the Human Factors Analysis and Classification System (HFACS) was created with the idea to associate contributing factors and errors (Wiegmann & Shappell, 2003).
While HFACS has been frequently applied in the field of aviation in literature, other industry types are under-represented. Seventeen data sources encompassing various industry types were collected and included in this dissertation analysis. …

Evaluation Of Periodontal Scaling Task And Development Of Force-Endurance Models For Simulated Scaling Task, Vettrivel Gnaneswaran

Department of Industrial and Management Systems Engineering: Dissertations, Theses, and Student Research

Force exertion is critical in grasping and holding activities at sub-maximal levels. Exertion misjudgments lead to musculoskeletal disorders (MSDs) impairing performance and productivity. Published literatures on grasping have addressed the force balance and endurance issues for non-prehensile movements of hand. However, little information is available on the force exerted in precision gripping employed in health care. Professionals, especially dental hygienists, when treating patients adopt awkward postures for extended period leading to cumulative trauma. Literatures on cumulative trauma have identified force exertion to be an important risk factor. Lack of information on fatigue with precision gripping motivated this research to establish …

Order Picking And Storage Using Stackable Pallets In A Warehouse, Ahmed Hassan Aly

All Dissertations

Quarter Billion dollars could be saved annually by double stacking pallets. A forklift storing 100 double stacked pallets saves 2.5 working hours versus single pallets. More than one billion pallets and cases handled between Wal-Mart distribution centers according to BEA White Paper (2006) [1], assume only 500 million were stackable pallets. This translates to 12.5 million working hours. If a forklift driver earns $20 per hour, then $250 million can be saved.
Moreover, handling double stacked pallets takes up to 46 % of total time to pick and store. This is a significant element that was ignored in literature. All …

Comparison Of Classical Analytic Hierarchy Process (Ahp) Approach And Fuzzy Ahp Approach In Multiple-Criteria Decision Making For Commercial Vehicle Information Systems And Networks (Cvisn) Project, Liyuan Zhang

Department of Industrial and Management Systems Engineering: Dissertations, Theses, and Student Research

Radio Frequency Identification (RFID) has emerged as an important technology with many possible applications in a wide variety of fields. It is said that RFID can perform well in transportation system. Nebraska Department of Motor Vehicles (NEDMV) is using this technique to perform an analysis on utilizing RFID license plates to assist with Commercial Vehicle Information Systems and Networks (CVISN) program with the cooperation of many other stakeholders. Previous House of Quality (HOQ) analysis evaluates stakeholders’ needs and provides the pairwise comparison values of six important technical requirements for each stakeholder. Based on these, this research aims to seek for …

A Bi-Directional Supply Chain Optimization Model For Reverse Logistics, Surendra M. Gupta, Pitipong Veerakamolmal

Surendra M. Gupta

This paper focuses an supply chain optimization system for reverse logistics. The solution approach employs an adaptation of the Materials Requirements Planning (MRP) technique, termed as components requirements planning, to determine the number of components needed to remanufacture products in each time period throughout the planning horizon.

Greedy Algorithm For Disassembly Line Scheduling, Seamus M. Mcgovern, Surendra M. Gupta

Surendra M. Gupta

Remanufacturing, recycling, and disposal recovery operations require the performance of disassembly activities. The disassembly line is the best choice for automated disassembly of returned products, however, finding the optimal balance is computationally intensive with exhaustive search quickly becoming prohibitively large. In this paper, a greedy algorithm is presented for obtaining optimal or near-optimal solutions to the disassembly line balancing problem. The greedy algorithm is a first-fit decreasing algorithm further enhanced to preserve precedence relationships. The algorithm seeks to minimize the number of workstations while accounting for hazardous and high demand components. A hill-climbing heuristic is then developed to balance the …

A Multi-Phase Fuzzy Logic Approach To Strategic Planning Of A Reverse Supply Chain Network, Kishore K. Pochampally, Surendra M. Gupta

Surendra M. Gupta

Strategic planning (also called designing) is a challenging aspect of a reverse supply chain network. To effectively satisfy drivers such as profitability, environmental regulations, and asset recovery, only the most economical used products must be reprocessed in only the recovery facilities that have the potential to efficiently reprocess them. Due to uncertainties in supply, quality, and reprocessing times of used products, the cost-benefit function in the literature that selects the most economical product to reprocess from a set of used products is not appropriate for direct adoption. Moreover, due to the same uncertainties, any traditional forward supply chain approach to …

A Business-Mapping Approach To Multi-Criteria Group Selection Of Collection Centers And Recovery Facilities, Kishore Pochampally, Surendra Gupta

Surendra M. Gupta

For a prospective reverse supply chain to operate efficiently, the designing of that chain must involve selection of collection centers and recovery facilities that have sufficient success potentials. These success potentials depend heavily on the participation (in the reverse supply chain) of three important groups that have multiple, conflicting, and incommensurate goals. Therefore, the potentials must be evaluated based on the maximized consensus among the three groups, viz., (i) Consumers whose primary concern is convenience, (ii) Local government officials whose primary concern is environmental consciousness, and (iii) Supply chain company executives whose primary concern is profit. In this paper, we …