Operations Research, Systems Engineering and Industrial Engineering Commons^™

A Three-Stage Model For Closed-Loop Supply Chain Configuration Under Uncertainty, Saman Hassanzadeh Amin, Guoqing Zhang

Mechanical, Automotive & Materials Engineering Publications

In this paper, a general closed-loop supply chain (CLSC) network is configured which consists of multiple customers, parts, products, suppliers, remanufacturing subcontractors, and refurbishing sites. We propose a three-stage model including evaluation, network configuration, and selection and order allocation. In the first stage, suppliers, remanufacturing subcontractors, and refurbishing sites are evaluated based on a new quality function deployment (QFD) model. The proposed QFD model determines the relationship between customer requirements, part requirements, and process requirements. In addition, the fuzzy sets theory is utilised to overcome the uncertainty in the decision-making process. In the second stage, the closed-loop supply chain network …

Evaluation Of Interpolation Effects On Upsampling And Accuracy Of Cost Functions-Based Optimized Automatic Image Registration, Amir Pasha Mahmoudzadeh, Nasser H. Kashou

Biomedical, Industrial & Human Factors Engineering Faculty Publications

Interpolation has become a default operation in image processing and medical imaging and is one of the important factors in the success of an intensity-based registration method. Interpolation is needed if the fractional unit of motion is not matched and located on the high resolution (HR) grid. The purpose of this work is to present a systematic evaluation of eight standard interpolation techniques (trilinear, nearest neighbor, cubic Lagrangian, quintic Lagrangian, hepatic Lagrangian, windowed Sinc, B-spline 3rd order, and B-spline 4th order) and to compare the effect of cost functions (least squares (LS), normalized mutual information (NMI), normalized cross correlation (NCC), …

The Effectiveness Of Pilot Response To Generate Concatenated Downlink Messages After Evaluation Of Hybrid Graphic-Text Clearances, Steven Brent Kiss

Browse all Theses and Dissertations

Data-Link Communication, or DataComm, is a digital text messaging system providing a means of communication between Air Traffic Control (ATC) and pilots. Current Pilot/ATC communication is via voice radio, but the number of ATC operators and voice channels are finite, which limits the number of aircraft voice transmission can accommodate. The number of aircraft within the National Airspace System (NAS) is expected to double between 2004 and 2025, and a transition from voice to DataComm is a necessity. DataComm is an integral part of the NAS and is implemented in incremental phases increasing its functions and capability. There are many …

Predicting The Clinical Outcome In Patients With Traumatic Brain Injury Using Clinical Pathway Scores, Jennifer Lorena Mendoza Alonzo

USF Tampa Graduate Theses and Dissertations

The Polytrauma/TBI Rehabilitation Center (PRC) of the Veterans Affairs Hospital (VAH) treats patients with Traumatic Brain Injury (TBI). These patients have major motor and cognitive disabilities. Most of the patients stay in the hospital for many months without major improvements. This suggests that patients, family and the VAH could benefit if healthcare provider had a way to better assess or "predict" patients' progression. The individual progress of patients over time is assessed using a pre-defined multi-component performance measure Functional Independence Measures (FIM) at admission and discharge, and a semi-quantitative documentation parameter Clinical Pathway (CP) at weekly intervals. This work uses …

Astaxanthin: A Comparative Case Of Synthetic Vs. Natural Production, Khoa Dang Nguyen

Faculty Publications and Other Works -- Chemical and Biomolecular Engineering

Astaxanthin, the “king of carotenoids” has been widely used as an animal feed additive for several decades, mainly in the aquaculture industry. Recent studies have led to its emergence as a potent antioxidant available for human consumption. Traditionally it has been chemically synthesized, but the recent market interest has generated interests in producing it naturally via yeast (Phaffia rhodozyma) fermentation, or algal (Haematococcus pluvialis) induction. This work aims to compare these production processes and their impact on the economical, environmental, and societal scale. We also look at the attempts of increasing production yields by altering various …

Acuta Enews January 2013 Vol. 42, No. 1

ACUTA Newsletters

In this issue...

1 The ACUTA Conference it Forum: What's in it for You?

2 Ruth A. Michalecki Leadership Award j Developing Funding Model

4 Wi-Fi goes Gigabit-802.1 1AC

5 Add Names from Your Campus to Your ACUTA Roster

5 Revised Webcasting Royalty Rates for 2010-15

6 Why 2013 Career Plans Must Go High-Tech

7 Info Links

7 Windstream Provides Calling Service to ACUTA /

8 Board Report ' Thanks to Event Sponsors for 2012

9 Welcome New Members

9 Check It Out

نحوه نگارش پروپوزال, Marjan Mohammadjafari Dr

Dr. Marjan Mohammadjafari

No abstract provided.

Binomial Theorem, Adeshina I. Adekunle Mr

Adeshina I. Adekunle MR

No abstract provided.

Rapid Determination Of Indirect Cod And Polyvinyl Alcohol From Textile Wastewater., Sandip S. Magdum, Gauri P. Minde, Kalyanraman V.

Sandip S. Magdum

PVA (Polyvinyl alcohol) is completely degraded and utilized by non-ubiquitous microorganisms as a sole source of carbon. PVA containing effluent treatments are not preferred because of high cost. PVA causes serious environmental pollution hence the objective of this work was to establish rapid and reliable method for analysis of COD (Chemical oxygen demand) and PVA concentration in textile desizing or any PVA containing effluent. Two indirect methods namely COD by TC (Total carbon) and TOC (Total organic carbon) were compared with COD chemical as standard. The percentage deviation of 0-0.8% PVA was same in both indirect COD by TC and …

The Quality And Acceptance Of Websites: An Empirical Investigation In The Context Of Higher Education, Mutaz M. Al-Debei

Dr. Mutaz M. Al-Debei

The aim of this study is to explain the main factors affecting behavioural intentions of students to regularly use university websites in the future. Universities are investing millions of dollars in developing high quality websites as they believe that this course of action can provide them with significant strategic benefits. Notwithstanding, little is known about what attracts students to regularly use university websites and our understanding in this context is by no means complete. Aiming to advance our knowledge in this domain, this study utilises a novel model that is developed on the basis of three well-established theories in the …

Developing And Implementing A Web Portal Success Model, Dima Jalal, Mutaz M. Al-Debei

Dr. Mutaz M. Al-Debei

The emergence and subsequent spreading of new technologies, such as Web portals, has changed the way people handle information, communicate, share knowledge, and perform tasks. The use of different information technologies and systems offers the potential for substantially improving performance not only at the organizational level but also at the individual level. However, performance gains are often obstructed by users' unwillingness to accept and use available systems and technologies. This paper aims at examining the role of Web portals in improving the overall performance at the individual level in terms of task productivity and innovation, customer satisfaction, and management control. …

Measuring Web Portals Success: A Respecification And Validation Of The Delone And Mclean Information Systems Success Model, Mutaz M. Al-Debei, Dima Jalal, Enas Al-Lozi

Dr. Mutaz M. Al-Debei

The main aim of this research is to investigate the role of web portals in improving job performance at the individual level from the perspective of employees as users. This is deemed significant as yet little research has assessed the success of web portals in delivering benefits at the individual level in terms of improved performance in developing countries. The DeLone and McLean IS success model was used as a foundational theory and then was refined to match the context of the current research. In fact, the functions and features of portals were identified, clustered and then linked to portals’ …

Mechaniczny Rozdział Faz Proj., Wojciech M. Budzianowski

Wojciech Budzianowski

No abstract provided.

Challenges And Prospects Of Processes Utilising Carbonic Anhydrase For Co2 Separation, Patrycja Szeligiewicz, Wojciech M. Budzianowski

Wojciech Budzianowski

This article provides an analysis of processes for separation CO2 by using carbonic anhydrase enzyme with particular emphasis on reactive-membrane solutions. Three available processes are characterised. Main challenges and prospects are given. It is found that in view of numerous challenges practical applications of these processes will be difficult in near future. Further research is therefore needed for improving existing processes through finding methods for eliminating their main drawbacks such as short lifetime of carbonic anhydrase or low resistance of reactive membrane systems to impurities contained in flue gases from power plants.

Improving Coalition Planning By Making Plans Alive, Jitu Patel, Michael C. Dorneich, David Mott, Ali Bahrami, Cheryl Giammanco

Michael C. Dorneich

The Collaborative Planning Model (CPM) supports human planners in managing planning information and facilitating automated reasoning. It aims to make plans 'alive' by digitizing planning concepts to facilitate their dynamic use, modification, dissemination, and reuse.

Empirical Data And Regression Analysis For Estimation Of Infrastructure Resilience With Application To Electric Power Outages, Cameron A. Mackenzie, Kash Barker

Cameron A. MacKenzie

Recent natural disasters have highlighted the need for increased planning for disruptive events. Forecasting damage and time that a system will be inoperable is important for disruption planning. The resilience of critical infrastructure systems, or their ability to recover quickly from a disruption, can mitigate adverse consequences of the disruption. This paper quantifies the resilience of a critical infrastructure sector through the dynamic inoperability input-output model (DIIM). The DIIM, which describes how inoperability propagates through a set of interdependent industry and infrastructure sectors following a disruptive event, includes a resilience parameter that has not yet been adequately assessed. This paper …

A Unified Convergence Analysis Of Block Successive Minimization Methods For Nonsmooth Optimization, Meisam Razaviyayn, Mingyi Hong, Zhi-Quan Luo

Mingyi Hong

The block coordinate descent (BCD) method is widely used for minimizing a continuous function f of several block variables. At each iteration of this method, a single block of variables is optimized, while the remaining variables are held fixed. To ensure the convergence of the BCD method, the subproblem of each block variable needs to be solved to its unique global optimal. Unfortunately, this requirement is often too restrictive for many practical scenarios. In this paper, we study an alternative inexact BCD approach which updates the variable blocks by successively minimizing a sequence of approximations of f which are either …

Linear Transceiver Design For A Mimo Interfering Broadcast Channel Achieving Max–Min Fairness, Meisam Razaviyayn, Mingyi Hong, Zhi-Quan Luo

Mingyi Hong

This problem can be formulated as maximizing the minimum rate among all the users in an interfering broadcast channel (IBC). In this paper we show that when the number of antennas is at least two at each of the transmitters and the receivers, the min rate maximization problem is NP-hard in the number of users. Moreover, we develop a low-complexity algorithm for this problem by iteratively solving a sequence of convex subproblems. We theoretically establish the global convergence of the proposed algorithm to the set of stationary points, which may be suboptimal due to the non-convexity of the original minimum …

Design Of A Biomass-To-Biorefinery Logistics System Through Bio-Inspired Metaheuristic Optimization Considering Multiple Types Of Feedstocks, Isidoro Trueba

Open Access Theses & Dissertations

Bioenergy has become an important alternative source of energy to alleviate the reliance on petroleum energy. Bioenergy offers significant potential to mitigate climate change by reducing life-cycle greenhouse gas emissions relative to fossil fuels. The Energy Independence and Security Act mandate the use of 21 billion gallons of advanced biofuels including 16 billion gallons of cellulosic biofuels by the year 2022. It is clear that Biomass can make a substantial contribution to supplying future energy demand in a sustainable way. However, the supply of sustainable energy is one of the main challenges that mankind will face over the coming decades. …

Manufacturing Strategy & Operations: Reflections On Key Current Issues: Challenges And Associated Human Resource Implications, Lorraine Mcgrath

Books/Book chapters

This chapter evaluates the current issues and challenges in defining a company’s manufacturing strategy and its production operations in consideration of the contemporary shift to low cost manufacturing locations. Competitive priorities of cost, quality, delivery and flexibility are reviewed. The structural and infrastructure elements of a manufacturing strategy are outlined. Mitigating risks in a global arena are reviewed. Collaborative efforts, including the cultural and personality issues of being human are included in the discussion of managing diversity in such a highly competitive and challenging enterprise resource planning environment.

Has Supply Chain Management Lost Its Relevance?, Natalie Descheres

Books/Book chapters

The context of business has changed dramatically over the last 15 years. The definition of need satisfaction, the shift from “dot to web” competition and the embedding of the organisation into a wider political and societal environment has transformed SCM contributions and the meaning of work for employees. Interdependence must evolve from the do-it-alone approach and yet the ashes are not proving fertile ground. In many ways, traditional models of management have not kept up with the changes and are taken aback by the complexity that surrounds us. Complexity is however not a feature of our world, but one of …

Where Next For Supply Chain Management?, Des Lee

Books/Book chapters

Supply chain management (SCM) has been so successful that it is largely taken for granted. Its success has been built on improving three key flows – of product, of money and of information – and on one core principle – core competence. What next for SCM? This article outlines the vulnerabilities that are embedded in modern supply chains and the unintended consequences of outsourcing activities that are not core competences. These consequences are global and have the potential to undermine past achievements. Finally, broad suggestions are made as to how these issues can be addressed and the areas on which …

Adequate Ventilation: How Is It Defined And Does It Adequately Warn Consumers?, Christopher Blankenship

Theses, Dissertations and Capstones

The purpose of this research was to clarify and define the term “adequate ventilation.” Upon looking at regulations, court cases, and other elements, it is clear that the term is inadequate to inform consumers and does not instruct consumers on how to achieve proper ventilation. To find out if consumers understand this, random persons were asked to define it. The answers were given a numerical value to show the knowledge trend. The outcome showed that most people do not understand how to achieve proper ventilation. Conclusion: Diagrams showing how to set up a room with ventilation and new instructions are …

An Intuitive Design Pattern For Sequentially Estimating Parameters Of A 2k Factorial Experiment With Active Confounding Avoidance And Least Treatment Combinations, H.-S. Jacob Tsao, Minnie Patel

Faculty Publications

2k Full factorial designs may be prohibitively expensive when the number of factors k is large. The most popular technique developed to reduce the number of treatment combinations is the fractional factorial design; confounding in estimating the model parameters naturally results in various resolution and aberration levels. While very useful, these resolution levels may not satisfy experimenters’ requirements for estimatibility and cost reduction. For example, while Resolution V ensures a common requirement that no two-factor interactions are confounded, it also imposes an often undesired restriction that a main effect cannot be confounded with a three-factor interaction, which may very well …

Efficient Space Dedication To Bus Rapid Transit Or Light Rail Systems, Jacob Tsao, A Pratama

Faculty Publications

Dedicating two lanes and passenger platforms to transit typically requires taking the same space away from general use. This may affect public support. This paper proposes efficient geometric configurations for a two-dedicated-lane BRT or light rail system that requires a minimum amount of right-of-way along a busy commute arterial. In many current busy commute corridors, a significant part of the street median is underused or unused for traffic purposes. The efficiency is achieved ainly by using the street median between a left-turn lane and its counterpart located at the intersection on the other end of the same street section and …

System Dynamics Modeling Of Hybrid Renewable Energy Systems And Combined Heating And Power Generator, Krishna R. Reddi, Weilin Li, Bochao Wang, Young B. Moon

Mechanical and Aerospace Engineering - All Scholarship

The role of energy in the present world is critical in terms of both economical development and environmental impact. Renewable energy sources are considered essential in addressing these challenges. As a result, a growing number of organisations have been adopting hybrid renewable energy system (HRES) to reduce their environmental impact and sometimes take advantage of various incentives. When a HRES is being planned, the ability to model a HRES can provide an organisation with numerous benefits including the capability of optimising sub-systems, predicting performances and carrying out sensitivity analysis. In this paper, we present a comprehensive system dynamics model of …

Modelling Engineering Change Management In A New Product Development Supply Chain, Krishna R. Reddi, Young B. Moon

Mechanical and Aerospace Engineering - All Scholarship

The changes within a new product development (NPD) process are handled differently depending on the stage of the project. The changes during the initial stages of the project are addressed by design iterations, while the changes after the product design is complete are addressed using a formal engineering change management (ECM) process. The ECM process is a complex process, especially under a collaborative environment, where various independent entities work together for a common cause of product development. The interactions between the NPD and ECM processes have rarely been investigated in the research community. In this paper, we attempt to study …

S-Stem Scholars, A Second Generation: Support For At-Risk Upper Division And Transfer Students In Ceas, Andrew A. Kline, Betsy M. Aller

Academic Leadership Academy

Begun in 2010, the S-STEM Scholar Program increases opportunities for financially needy but academically talented students. These students:

•Are first-time, first year students •Demonstrate financial need through FAFSA applications

•Will enter a major in the College of Engineering and Applied Sciences

•Have a math ACT of 24 or above

Student awardees receive up to $3,000 per semester, and continue to receive this amount for up to eight semesters with continued academic success and progress to degree.

The Modeling, Analysis And Control Of Resilient Manufacturing Enterprises, Yao Hu

Theses and Dissertations--Electrical and Computer Engineering

The resilience of manufacturing enterprises is an important research topic, since disruptions have severe effects on the normal operation of manufacturing enterprises, especially as manufacturing supply chains become global. Although many case studies have been carried out to address resilience in organizations, a systematic method to model and analyze the resilience dynamics in manufacturing enterprises is not well developed. This study is intended to conduct research on quantitative analysis and control for resilience.

After reviewing the literature addressing resilience, a modeling framework is presented to characterize the resilience of a manufacturing enterprise responding to disruptive events, which includes inventory ow …

Investor Sentiment In The Stock Market, Bayram Veli Salur

Open Access Theses

Classical finance theories neglect the impact of investor sentiment on stock returns. These theories assume that investors are rational and make decisions in a way that maximizes their wealth. However, a vast amount of research shows that investors' decisions are affected by their psychological biases and feelings. These findings suggest that investor sentiment may have an impact on stock returns. This hypothesis is the main motivation of this study. First, this study examines whether there is correlation among investor sentiment indicators, and whether sentiment indicators have an impact on stock returns in the US and other countries. Second, this study …