Operations Research, Systems Engineering and Industrial Engineering Commons^™

Analysis Of A Clinically Failed, Mechanically Intact, Reconstructive Compression Plate, Bharadwaj Cheruvu, Sunil Karmacharya, Richard T. Laughlin, Tarun Goswami

Biomedical, Industrial & Human Factors Engineering Faculty Publications

A reconstructive orthopedic bone plate was submitted for analysis. Traditional failure analysis methods were used to assess the mode of the plate failure. Metallographic investigation of the plate was carried out in this report. Since limited data was available in the literature and clinical data related to subject demography, date of removal as well as reasons for removal unknown, in depth analysis was not possible. However, the plate was received in in-tact condition with minor biological deposits and scratches, it is speculated that the failure of the plate may have been due to biological/clinical reasons, likely infection, rejecting the device …

Creation And Analysis Of Checklists To Improve Raquet Stringing Performance In Tennis Warehouse, Alston S. Nguyen

Industrial and Manufacturing Engineering

Tennis Warehouse has a need to increase the supply of strung racquets and man hours to complete these strung racquets over the course of a year. That is, the demand can be increased by up to 4 times its average load during certain hectic parts of the year (professional tournaments, holidays, and competitive seasons). Not meeting this demand can lead to upset customers, unnecessary waste and replacing of rushed items and shipping costs, and a discouraged customer service representative workforce. The objective of this project is to use a set of checklists to address this problem and attempt to increase …

Consequence Analysis Of Bleve Scenario In The Propane Tank: Acase Study At Bandar Abbas Gas Condensate Refinery Of Iran, Saeed Nazari, Najmeh Karami, Hojjat Moghadam, Parvin Nasiri

Innovative Research Publications IRP India

The occurrence of incidents resulting from chemical releases requires preparatory measures. Despite special layers of protection in chemicalindustries to avoid such releases and subsequent consequences, human errors still occur and negatively contribute to failures in different activities include maintenance practices and operating control and so on. It is proven that one of the most devastating risk in the oil and gas companies is explosion, particularly BLEVE. Thus, the study of this phenomena and analysis of its consequences at various stages is necessary. Recent studies claimed that the predictionof damaging effectafter the explosion by mathematical models is necessary for its effective …

Microstructure And Wear Behavior Of As Cast Al-25mg2si-2cu-2ni Alloy, Geetanjali S. Guggari, Veena. Badiger, Dr. Shivakumar S

Innovative Research Publications IRP India

The remarkable feature of the Aluminium is its low density and ability to withstand corrosion effect due to phenomenon of passivation. Structural components made from Aluminium and its alloys are vital to the aerospace industry and are important in other areas of transportation and structural materials. The oxides and sulphate are useful compounds of Aluminium based on its weight. In this work, an attempt has been made to utilize the combined effect of high cooling rate solidification, unique micro structural evolution mechanism of T6 heat treatment the advantages of hypereutectic Al-Si system alloyed with other elements such as Cu, Fe …

Haptics-Based Cataract Surgery Simulator, Jia Luo

Link Foundation Modeling, Simulation and Training Fellowship Reports

Surgical training using computer-based simulators are being adopted by many medical specialties, mainly because they offer several advantages to traditional training methods involving animals or cadavers. This article focuses on the design and implementation of a haptics-based cataract surgery simulator.

A Rolling Horizon Auction Mechanism And Virtual Pricing Of Shipping Capacity For Urban Consolidation Centers, Chen Wang, Hoong Chuin Lau, Yun Fong Lim

Research Collection School Of Computing and Information Systems

A number of cities around the world have adopted urban consolidation centers (UCCs) to address challenges of last-mile deliveries. At the UCC, goods are consolidated based on their destinations prior to their deliveries into city centers. Typically, a UCC owns a fleet of ecofriendly vehicles to carry out such deliveries. Shippers/carriers that make use of the UCC’s service hence no longer need to be restricted by timewindow and vehicle-type regulations. As a result, they retain the ability to deploy large trucks for the economies of scale from the source to the UCC which is located outside the city center. Furthermore, …

Designing Bus Transit Services For Routine Crowd Situations At Large Event Venues, Jianli Du, Shih-Fen Cheng, Hoong Chuin Lau

Research Collection School Of Computing and Information Systems

We are concerned with the routine crowd management problem after a major event at a known venue. Without properly design complementary transport services, such sudden crowd build-ups will overwhelm the existing infrastructure. In this paper, we introduce a novel flow-rate based model to model the dynamic movement of passengers over the transportation flow network. Based on this basic model, an integer linear programming model is proposed to solve the bus transit problem permanently. We validate our model against a real scenario in Singapore, where a newly constructed mega-stadium hosts various large events regularly. The results show that the proposed approach …

Modelling Vessel Traffic Service To Understand Resilience In Everyday Operations, Gesa Praetorius, Erik Hollnagel, Joakim Dahlman

Gesa Praetorius

Vessel Traffic Service (VTS) is a service to promote traffic fluency and safety in the entrance to ports. This article׳s purpose has been to explore everyday operations of the VTS system to gain insights in how it contributes to safe and efficient traffic movements. Interviews, focus groups and an observation have been conducted to collect data about everyday operations, as well as to grasp how the VTS system adapts to changing operational conditions. The results show that work within the VTS domain is highly complex and that the two systems modelled realise their services vastly differently, which in turn affects …

Cyclades – Crew-Centered Design And Operation Of Ships And Ship Systems For Safer Maritime Operations, Gesa Praetorius

Gesa Praetorius

Presentation given at "Maritim Sikkerhed – Sunhed og Miljø" in Nyborg, 27 August 2015.

Design And Research Of Vlcc Vessel Virtual Marine Engine Room, Chuang Zhao

Maritime Safety & Environment Management Dissertations (Dalian)

No abstract provided.

Research On Xiamen Port Network Layout From The Perspective Of Harbors And Inland Ports Linked Development, Yijun Zheng

World Maritime University Dissertations

No abstract provided.

Effect Of The Construction Of Ftz Upon The Development Of Shanghai International Shipping Center, Yun Zhou

World Maritime University Dissertations

No abstract provided.

Guidelines For Scheduling In Primary Care: An Empirically Driven Mathematical Programming Approach, Hyun Jung Alvarez Oh

Doctoral Dissertations

Primary care practices play a vital role in healthcare delivery since they are the first point of contact for most patients, and provide health prevention, counseling, education, diagnosis and treatment. Practices, however, face a complex appointment scheduling problem because of the variety of patient conditions, the mix of appointment types, the uncertain service times with providers and non-provider staff (nurses/medical assistants), and no-show rates which all compound into a highly variable and unpredictable flow of patients. The end result is an imbalance between provider idle time and patient waiting time. To understand the realities of the scheduling problem we analyze …

Mapping Kinematic Functional Abilities Of The Hand To Three Dimensional Shapes For Inclusive Design, Samuel T. Leitkam, Laura Bix, Javier De La Fuente, Tamara Reid Bush

Industrial Technology and Packaging

Loss of hand function can have adverse effects on an individual's ability to maintain independence. The ability to perform daily activities, such as food preparation and medication delivery, is dependent on the hand's ability to grasp and manipulate objects. Therefore, the goal of this research was to demonstrate that three dimensional (3D) modeling of hand function can be used to improve the accessibility of handheld objects for individuals with reduced functionality through informed design. Individual models of hand functionality were created for 43 participants and group models were developed for groups of individuals without (Healthy) and with reduced functionality due …

The Influence Of Cu3(Btc)2 Metal Organic Framework On The Permeability And Perm-Selectivity Of Plla-Mof Mixed Matrix Membranes, Ajay Kathuria, Saleh Al-Ghamdi, Mohamad G. Abiad, Rafael Auras

Industrial Technology and Packaging

Poly(l-lactic acid) (PLLA) - 20% (w/w) and Cu₃(BTC)₂ metal organic framework (MOF) based mixed matrix membranes (MMMs) were fabricated by a vertical corotating twin screw microcompounder followed by an injection molding process. Water vapor, CO_2, O₂, and selected aroma mass transfer properties of PLLA and PLLA MMMs were evaluated. The CO₂/O₂ perm-selectivity of PLLA (α_CO2/O2) MMMs increased from 7.6 to 10.3 with the incorporation of 20% Cu₃(BTC)₂ MOF. Gravimetric permeability studies of trans-2-hexenal performed at 23°C and 50% RH indicated that permeability coefficient of PLLA MMMs …

Detecting Periods Of Flight With High Task Load, James R. Parkinson, Steven J. Landry, Quang Dao, Caitlin Surakitbanharn

The Summer Undergraduate Research Fellowship (SURF) Symposium

Tools that predict dangerous working conditions empirically in the cockpit could greatly improve aviation safety. In an effort to lay the groundwork for such tools, this study will investigate whether a link exists between task load and pilots’ control strategies, their biometric data, and their planes’ position data. Using X Plane simulation software, an experiment will be run in which licensed pilots will fly a 3-nautical-mile approach into Mineta San Jose International Airport 4 times, under different task load conditions. During the flight, participants’ pupil diameters will be recorded along with the simulated aircraft position data and cognitive control modes. …

Identifying Mode Confusion In Recorded Aircraft Data, James Douglas Thomas, Yul Kwon, Steven J. Landry

The Summer Undergraduate Research Fellowship (SURF) Symposium

In recent decades, commercial aviation accidents have occurred due to human-machine interaction (HMI) problems known as “mode confusion.” This is caused, in some cases, by a lack of understanding of onboard systems by pilots. Large amounts of Flight Operational Quality Assurance (FOQA) data are available, analysis of which could assist in identification of safety risks in daily operations. Through analysis of pilot reactions and recorded aircraft data, methods to detect mode confusion are developed to improve aviation safety. This study was conducted by inducing mode confusion into a flight simulation scenario and analyzing aircraft data to detect emerging patterns. Three …

Managing Technology Push Through Marketing Testbeds: The Case Of The Hi-Tech Center In Vienna, Austria, Rainer Hasenauer, Charles M. Weber, Peter Filo, Jozef Orgonáš

Engineering and Technology Management Faculty Publications and Presentations

The ‘technology push’ approach to technology development rests on the assumption that if you make it, they will come. This assumption carries significant market risk. The technology may miss its intended market window, or the market that was anticipated at the inception of technology development no longer exists at the time of market release. This paper discusses how the Hi Tech Center in Vienna, Austria, a multi national collaborative effort between industry and universities in Central Europe, helps its clients manage technology push by deploying the marketing testbed approach. After identifying lead users for a client’s technology, it characterizes and …

Cloud Service Adoption Decision, Greg Wease, Chih-Jen Yu, Kwasi Boateng, Leong Chan

Engineering and Technology Management Faculty Publications and Presentations

Many organizations with an IT infrastructure consisting of a combination of hardware and software, look for ways to achieve greater efficiencies, cost-savings associated with maintenance and upkeep, ease of use, while maintaining a great level of security. The main idea behind this research paper is to better understand the decision-making process with respect to how an IT organization evaluates its needs and chooses between different computer-hosting environments, i.e.: public cloud, private cloud, hybrid – combination of public and private cloud, lastly, an in-house platform, which is hosted internal to the organization and/or via a datacenter. A widely-accepted definition of “Cloud …

Financial Analysis And Comparison Of Compact Electric And Gasoline Cars, Jing Jiang, Alexander Blank, Felix Maier, Anjan Bharthepudi

Engineering and Technology Management Faculty Publications and Presentations

In the paper, a PESTLE (political, economic, social, technical, legal, and environmental) analysis is used to conduct an initial evaluation for electric vehicles (EV) and gasoline cars. Furthermore, two cash flow models are created to describe the scenarios of both gasoline and electric car respectively. Based upon the proposed models, the equivalent uniform annual cost (EUAC) methodology is used to calculate the cost during the period of car ownership. Four compact EVs and five compact gasoline cars are selected in the analysis. The results expose that the actual return of federal tax credit impacts the EUAC value. The 50% return …

Supporting Sustainable Technology Cluster Development: A Performance Measurement Problem, Elizabeth Gibson

Engineering and Technology Management Faculty Publications and Presentations

Managers require metrics to measure organizational performance. However, metrics used by organizations that support technology cluster development are poorly understood in the literature. The most frequently referenced indicator for cluster development is regional economic and jobs data. These macro level indicators are not sufficient to measure the performance inside the cluster, leaving champions and policy makers to struggle with ad-hoc trial and error experimentation. The difficulty in defining and developing a performance measurement system is addressed. This paper lays the groundwork for improved approaches towards measuring the performance of technology cluster initiatives.

Assessing The Effectiveness Of Big Data Initiatives, Nayem Rahman, Fahad Aldhaban

Engineering and Technology Management Faculty Publications and Presentations

There is a great enthusiasm with the prospect of big data among business and industry leaders, academia and researchers. A lot of big data tools and technologies have emerged recently to capture, store, process and analyze big data. One remarkable achievement is that a handful of open source technologies have been introduced by Apache Hadoop Foundation that allows any organization to undertake big data projects. Many big data projects have been implemented during the last few years. This paper explores the benefits achieved with those projects. Big data has been applied in diverse fields including scientific and medical discovery projects, …

Exploring The Adoption And Use Of The Smartphone Technology In Emerging Regions: A Literature Review And Hypotheses Development, Fahad Aldhaban, Tugrul Unsal Daim, Robert R. Harmon

Engineering and Technology Management Faculty Publications and Presentations

Users’ acceptance of a new information technology (IT) is a determining factor of its market success. A solid understanding of the users’ adoption process and use behavior enables a more robust definition of user requirements and better market alignment. This is especially important in markets characterized by rapid technological change such as smartphones. The Technology Acceptance Model (TAM) is often used to assess the factors affecting adoption of new technologies. However, TAM models often omit the role of important variables such as human and social factors in the adoption process. In developing markets such as China, cultural and social influences …

Siting A Wind Farm In Oregon: Considering A Hierarchical Decision Model With Four Scenarios, Diane Yates

Engineering and Technology Management Faculty Publications and Presentations

This paper primarily serves two purposes: first, it looks to develop a methodology that takes scenarios and certain hard-to-measure intangibles such as politics, social impact, and even religion; as well as more tangible and measurable variables such as environmental impacts, cost and types of materials, storage and wind turbine technologies, to name a few, that then could be used as input to a decision-making model on where to build a wind farm. The hierarchical decision model (HDM) then analyzes these variables, based on an independent judging panel, in order to come up with a recommendation for the best site on …

A Model For The Rapid Distribution Of Critical Medical Countermeasures To Large U.S. Populations During A Public Health Emergency Via The Sns-Rss-Pod System, Roger Ivan Fiske

Doctoral Dissertations

In the event of a large scale public health emergency in the United States, the need for emergency medical supplies may quickly exceed existing local and regional resources. In these circumstances, specific life-saving countermeasures may be released from the CDC (The United States Centers for Disease Control and Prevention) Strategic National Stockpile (SNS) and delivered to local Points of Dispensing (PODs) via a rapid emergency distribution system that involves multiple governmental agencies and private sector organizations. Included in this distribution system are temporary Receiving, Staging, Storage (RSS) warehousing operations. One of the primary objectives of this SNS-RSS-POD system is to …

Collaborative Models For Supply Networks Coordination And Healthcare Consolidation, Shima Mohebbi

Doctoral Dissertations

This work discusses the collaboration framework among different members of two complex systems: supply networks and consolidated healthcare systems. Although existing literature advocates the notion of strategic partnership/cooperation in both supply networks and healthcare systems, there is a dearth of studies quantitatively analyzing the scope of cooperation among the members and its benefit on the global performance. Hence, the first part of this dissertation discusses about two-echelon supply networks and studies the coordination of buyers and suppliers for multi-period procurement process. Viewing the issue from the same angel, the second part studies the coordination framework of hospitals for consolidated healthcare …

Developing An Optimal Model For Infant Home Visitation, Isaac Atuahene

Doctoral Dissertations

The United States, Great Britain, Denmark, Canada and many other countries have accepted home visitation (HV) as a promising strategy for interventions for infants after births and for their mothers. Prior HV studies have focused on theoretical foundations, evaluations of programs, cost/benefit analysis and cost estimation by using hospital/payer/insurance data to prove its effectiveness and high cost. As governments and private organizations continue to fund HVs, it is an opportune time to develop and formulate operations research (OR) models of HV coverage, quality and cost so they might be used in program implementation as done for adult home healthcare (HHC) …

Classification Of Adequate Impact Protection For Hands, Patrick Dylan Loshek

Theses and Dissertations

ABSTRACT

CLASSIFICATION OF ADEQUATE

IMPACT PROTECTION FOR HANDS

by

Patrick D. Loshek

The University of Wisconsin-Milwaukee, 2015

Under the Supervision of Professor Naira Campbell-Kyureghyan

Historically, hand injuries have been a large burden for the manufacturing, construction, mining, oil and gas industries. Specially designed gloves are commonly used in industry today to protect hands from impacts. These gloves are designed to reduce hand injuries by absorbing the impact forces workers may encounter due to objects striking the hand. However, to date, there is no standard for the testing of these gloves and quantifying the force reduction a user would experience when …

Transient Performance Analysis Of Serial Production Lines, Yang Sun

Theses and Dissertations

TRANSIENT PERFORMANCE ANALYSIS OF

SERIAL PRODUCTION LINES

by

Yang Sun

The University of Wisconsin-Milwaukee, 2015

Under the Supervision of Professor Liang Zhang

Production lines with unreliable machines and finite buffers are characterized by both steady-state performance and transient behavior. The steady-state performance has been analyzed extensively for over 50 years. Transient behavior, however, is rarely studied and remains less explored. In practice, a lot of the real production systems are running partially or entirely in transient periods. Therefore, transient analysis is of significant practical importance.

Most of the past research on production systems focuses on discrete materials flow which utilities …

Modelling Supercomputer Maintenance Interrupts: Maintenance Policy Recommendations, Jagadish Cherukuri

Masters Theses

A supercomputer is a repairable system with large number of compute nodes interconnected to work in harmony to achieve superior computational performance. Reliability of such a complex system depends on an effective maintenance strategy that involves both emergency and preventive maintenance. This thesis analyzes the maintenance records of four supercomputers operational at The National Institute of Computational Science located at Oak Ridge National Laboratory. We propose to use the generalized proportional intensities model (GPIM) to model the maintenance interrupts as it can capture both the reliability parameters and maintenance parameters and allows the inclusion of both emergency and preventive maintenance. …