Evaluation Of Periodontal Scaling Task And Development Of Force-Endurance Models For Simulated Scaling Task,
2010
University of Nebraska-Lincoln
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,
2010
Clemson University
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 …
An Investigation Of Metaheuristics Using Path- Relinking On The Quadratic Assignment Problem,
2010
Clemson University
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,
2010
Clemson University
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. …
Pull Production System Training Guide,
2010
Cal Poly State University
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 …
Expansion In Existing And Future Franchises,
2010
Cal Poly State University
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 …
A Practical Approach To Computer Donation Supply Chain For Non-Profit Organizations,
2010
Cal Poly State University
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 …
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,
2010
University of Nebraska-Lincoln
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,
2010
Northeastern University
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,
2010
Northeastern University
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,
2010
Southern New Hampshire University
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,
2010
Northeastern University
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 …
Pricing Of End-Of-Life Items With Obsolescence,
2010
Northeastern University
Pricing Of End-Of-Life Items With Obsolescence, Srikanth Vadde, Sagar V. Kamarthi, Surendra M. Gupta
Surendra M. Gupta
Variability in the inflow of end-of-life (EOL) products and fluctuating inventory levels often make the processing of EOL products an economically risky operation for product recovery facilities (PRFs). Choosing an appropriate pricing policy can enhance the performance of PRFs by methodically clearing their inventory and increasing profits. This work presents two pricing models to counter the prospect of product obsolescence that can happen either gradually or suddenly. Product obsolescence can cause demand drop and inventory pile up, both of which could dent the revenues of PRFs. In the first model, gradual obsolescence and environmental regulations that limit the disposal quantity …
Product Recovery Using A Disassembly Line : Challenges And Solution,
2010
Northeastern University
Product Recovery Using A Disassembly Line : Challenges And Solution, Surendra M. Gupta, Askiner Gungor
Surendra M. Gupta
Disassembly plays an important role in product recovery by allowing selective separation of desired parts and materials. The disassembly line is the best choice for automated disassembly of returned products, a feature that will be essential in the future. It is, therefore, important that the disassembly line be designed and balanced so that it works as efficiently as possible. In this paper, the authors address the disassembly line balancing problem and the challenges that come with it.
Disassembly Process Planning Using Petri Nets,
2010
Northeastern University
Disassembly Process Planning Using Petri Nets, Kendra E. Moore, Askiner Gungor, Surendra M. Gupta
Surendra M. Gupta
We generate a disassembly PN (DPN) from a disassembly precedence matrix. The resulting DPN can be analyzed using the reachability tree method to generate all feasible disassembly process plans (DPPs), and cost functions can be used to determine the optimal DPP. Since generating the reachability tree is NP-complete, we develop a heuristic algorithm to limit the size of the reachability tree. The algorithm employs multihypothesis search to dynamically explore the v likeliest lowest cost branches of the tree, in order to identify near-optimal DPPs. The cost function incorporates tool changes, changes in direction movement, and individual part characteristics (e.g., hazardous). …
Determining Optimum And Suboptimum Disassembly Sequences With An Application To A Cell Phone,
2010
Technische Universiteit Eindhoven
Determining Optimum And Suboptimum Disassembly Sequences With An Application To A Cell Phone, A.J.D. (Fred) Lambert, Surendra M. Gupta
Surendra M. Gupta
We study the disassembly process of a moderately complex consumer product (cell phone) consisting of 25 components. The investigation involves a heuristically solved disassembly line balancing problem and the determination of an appropriate disassembly sequence influenced by sequence-dependent costs, which is based on a novel combination of exact and heuristic algorithms. The issue of generating various suboptimum solutions to cope with multiple optimization criteria is also discussed.
Design Of An Integrated Component Recovery System,
2010
Northeastern University
Design Of An Integrated Component Recovery System, Pitipong Veerakamolmal, Surendra Gupta
Surendra M. Gupta
This paper presents a two-stage disassembly and retrieval system that provides a unique solution for planning selective component recovery from products. The solution approach uses a process sequencing technique to schedule the operations in both stages to optimize the operational makespan.
Planning An Efficient Closed-Loop Supply Chain Network : A Unified Single Phase Approach,
2010
Northeastern University
Planning An Efficient Closed-Loop Supply Chain Network : A Unified Single Phase Approach, Satish Nukala, Surendra M. Gupta
Surendra M. Gupta
No abstract provided.
Efficient Design And Effective Marketing Of A Reverse Supply Chain : A Fuzzy Logic Approach,
2010
Northeastern University
Efficient Design And Effective Marketing Of A Reverse Supply Chain : A Fuzzy Logic Approach, Kishore K. Pochampally, Surendra M. Gupta
Surendra M. Gupta
A two-phase mathematical programming approach to efficiently design a reverse supply chain is proposed, as follows: in phase I, a fuzzy cost-benefit function is formulated to perform a multi-criteria economic analysis for selecting the most economical product to re-process, from a set of candidate used products; in phase II, an integer goal programming model that not only identifies potential recovery facilities but also leads to transportation of the right mix and quantities of products (used as well as re-processed) across the supply chain, is formulated. Since the success of a reverse supply chain depends on its marketing strategy as well …
A Combinatorial Cost-Benefit Analysis Methodology For Designing Modular Electronic Products For The Environment,
2010
Northeastern University
A Combinatorial Cost-Benefit Analysis Methodology For Designing Modular Electronic Products For The Environment, Pitipong Veerakamolmal, Surendra Gupta
Surendra M. Gupta
This paper presents a technique to analyze the efficiency of designing electronic products for the environment. The efficiency of each design is indicated using a Design for Disassembly Index (DfDI). DfDI uses a disassembly tree (DT) which relies on the product's bill of materials as its structural blueprint. DfDI can be used to compare the efficiency among alternative designs, identifying the best alternative for a product retirement plan. In addition, the index offers designers with an important measure to help improve future products.
