Modeling Bus Dwell Time And Time Lost Serving Stop In China, Chao Wang, Zhirui Ye, Yuan Wang, Yueru Xu, Wei Wang

Journal of Public Transportation

The primary objective of this study was to develop a quantitative approach to estimate bus dwell time and time lost serving stop, which included acceleration and deceleration time, dead time, and time for serving boarding and alighting passengers. A polynomial model incorporating kinematics of a particle was derived for estimating bus acceleration and deceleration time. In addition, descriptive statistics methods were used to analyze dead time. A case study was conducted to show the applicability of the proposed model with data collected from the seven most common types of bus stops in China. R-square and Mean Absolute Percentage Error (MAPE) …

Spur Gear Design: Some New Perspectives, Edward Osakue, Lucky Anetor

Faculty Publications

New perspectives such as harmonic mean, contact patch as translating third body, contact form factor, and service load factor are introduced in spur gear design. The harmonic mean rule characterizes the physical and geometric properties of the contact patch. The contact patch is construed as a body in translation during gear teeth engagement. The contact form factor may be used to compare the load capability of different pressure angle standards. The service load factor captures the influence of different conventional rated load modification factors. Gear design analysis is separated into design sizing and design verification tasks. Design sizing and design …

Transportation System Vulnerability And Resilience To Extreme Weather Events And Other Natural Hazards: Report For Pilot Project — Kytc District 1, Benjamin L. Blandford, Scott Schurman, Candice Y. Wallace, Sarah M. Mccormack

Kentucky Transportation Center Research Report

This research’s objective is to assist the Kentucky Transportation Cabinet (KYTC) in its efforts to develop strategies to address natural hazard vulnerabilities and improve the resiliency of Kentucky’s transportation infrastructure. Recent federal legislation calls for state transportation agencies to develop a risk-based asset management plan for National Highway System (NHS) assets that includes consideration of natural hazards. Similarly, the Federal Highway Administration (FHWA) calls for state transportation agencies to identify potential vulnerabilities associated with extreme weather events and climate change, and to incorporate these findings into transportation planning, design, and maintenance practices.

All-Metal Structural Color Printing Based On Aluminum Plasmonic Metasurfaces, Z. Li, W. Wang, D. Rosenmann, D. Czaplewski, Xiaodong Yang, Jie Gao

Mechanical and Aerospace Engineering Faculty Research & Creative Works

No abstract provided.

Modeling Of Geometric Change Influence On Blast-Wave Propagation In Underground Airways Using A 2d-Transient Euler Scheme, Liang Wang, Sisi Que, Jerry C. Tien, Nassib Aouad

Mining Engineering Faculty Research & Creative Works

The impact of methane explosions on mining operations can never be over-emphasized. The safety of miners could be threatened and local ventilation facilities are likely to be damaged by the flame and overpressure induced by a methane explosion event, making it essential to understand the destructiveness and influence range of a specific explosion. In this paper, the attenuation effect of geometric changes, most commonly bends, obstacles, and branches, present in the way of blast-wave propagation and the capability of the selected numerical model were studied. Although some relevant experimental research has been provided, quantitative analysis is insufficient. This paper investigates …

A Time For Change” An Evaluation Of The Ability Of The Quantity Surveyor To Measure Mechanical And Electrical Services Under The Irish Public Works Contracts (Designed By The Employer) Using The Agreed Rules Of Measurement., Charles Mitchell

Other Resources

Abstract

This dissertation seeks to examine the ability of the quantity surveyor to measure mechanical and electrical bills of quantities under the Irish Public Works Contracts using the Agreed Rules of Measurement 4. The study uses the opinions and perspectives of a broad range of industry stakeholders to identify barriers and drivers which will facilitate this change.

A mixed methodology research method incorporating both quantitative and qualitative research methods was used. A literature review covers relevant research in the field of the Public Works Contracts, the use of bills of quantities and specialist sub-contractors. The results of an unreported survey …

Bicp Global Bim Study, Barry Mcauley, Alan Hore, Roger West

Articles

The BICP is a direct response to the 2014 Construction 2020 report calling on Enterprise Ireland to work with industry organisations to promote the use of BIM and develop the appropriate technical skills amongst Irish construction firms so that they can successfully compete in markets where BIM is widely adopted or a requirement. There are four distinct work packages to achieve the strategic objectives of the BICP which include amongst other things a systematic review of BIM adoption in international regions, with particular focus on the enablers to support national implementation programmes. This study focused on exploring the value proposition …

Analysis Of Farm Vehicle Crashes And Safety Belt Usage, Kenneth R. Agent, Eric R. Green, Michael A. Fields

Kentucky Transportation Center Research Report

The use of safety belts and child safety seats has been shown to be an effective means of reducing injuries to motor vehicle occupants involved in traffic crashes. There have been various methods used in efforts to increase safety belt and safety seat usage. Past efforts have included public information campaigns, local followed by statewide legislation, and enforcement of the legislation.

The objectives of the study were to collect data and review related Kentucky data to determine the following information:

• usage rate specifically for occupants of farm vehicles,
• the number of registered farm vehicles and their percentage of all registered …

Using The Gauge Condition To Simplify The Elastodynamic Analysis Of Guided Wave Propagation, Bhuiyan Yeasin Md, Victor Giurgiutiu

Faculty Publications

In this article, gauge condition in elastodynamics is explored more to revive its potential capability of simplifying wave propagation problems in elastic medium. The inception of gauge condition in elastodynamics happens from the Navier-Lame equations upon application of Helmholtz theorem. In order to solve the elastic wave problems by potential function approach, the gauge condition provides the necessary conditions for the potential functions. The gauge condition may be considered as the superposition of the separate gauge conditions of Lamb waves and shear horizontal (SH) guided waves respectively, and thus, it may be resolved into corresponding gauges of Lamb waves and …

Interactive Training Of Teleoperated Robotic System For Real-Time Mriguided Steerable Needle Intervention, Gang Li

Link Foundation Modeling, Simulation and Training Fellowship Reports

Needle-based interventions, also known as percutaneous interventions, are common approaches for diagnostic and therapeutic procedures including tissue biopsy, delivery of therapeutic agents and tumor ablation. Needle steering, controlling the rotation of needle while inserting, is a clinical technique to produce a curved path to avoid anatomical obstacles (e.g. vasculature and bones) or compensate for placement errors. But, it requires delicate skills and long-term training to accurately steer the needle, due to difficult control of the needle path and lack of intraoperative image feedback. The objective of the proposed project is to develop a clinician-controlled teleoperated robotic system to train and …

Real-Time Monitoring Of Sand And Dust Storm Winds Using Wireless Sensor Technology, Hana Mohammed Mujlid

Theses and Dissertations

This dissertation proposes an empirical model for prediction of the radio path loss in Wireless Sensor Networks (WSNs). The model applies to WSNs that are deployed in environments with dust and sand storms. It is developed as a result of statistical analysis of the measured data collected during dust and sand storms. The measured data were obtained at 2.4GHz and for different levels of the storm severity. For the purpose of data collection a custom measurement system based on Xbee air interface was developed. The proposed model shows a very good agreement with the measured data. It is also demonstrated …

A Systems Engineering Approach For Plant Layout Management & Optimization, Abdulelah Saeed Algarni

Theses and Dissertations

The basis of this paper was to investigate the system engineering applications on petro-chemical facilities layout designs. This work aims to facilitate and introduce the application of Facility Layout Problems to industrial case studies based on system engineering methodologies and performance measurements. Additionally, an effort was made to present a state-of-the-art literature review of industrial layout problems that exhibits scarcity of system engineering role in the design and implementations of industrial Facility Layout Problems. Facility Layout is one of the demanding large-scale optimization problems. Upon the completion of this report, we found a great sense of vitality of system engineering …

Numerical Modeling Of Dust Dynamics Around Small Asteroids, William Yu, Joseph J. Wang, Daoru Frank Han

Mechanical and Aerospace Engineering Faculty Research & Creative Works

Dynamics of dust transport around an airless body has been a focused area of research in recent years, however, various challenging aspects still remain to be addressed. This paper presents an investigation of charged dust transport and distribution around small asteroids utilizing a full particle Particle-in-Cell (PIC) model to simulate plasma flow around an asteroid and calculate surface charging self-consistently from charge deposition on asteroid. Material properties of asteroid are also explicitly included in the simulation. PIC simulation results are fed into a 3D dust dynamics model to simulate charged dust levitation, transport and distribution. In addition to electrostatic and …

Experimental Investigation On Flow Characteristics Of A Four-Wing Micro Air Vehicle, Lisong Shi, Chunkit Uy, Shih K. Huang, Zifeng Yang, George P.G. Huang, Chihyung Wen

Mechanical and Materials Engineering Faculty Publications

The aim of current research work on micro air vehicles is to realize their autonomous control, i.e. building a library for a lookup table that would apply to micro electronics. In doing so, comprehensive flight tests need to be carried out. In this study, a four-wing flapping MAV is built and a multi-discipline approach is used to design the MAV model. Precision manufacturing technology is introduced here. The finished micro air vehicle has a weight of 8 g and is tested for flight by remote control. The micro air vehicle can perform both hovering and forward flight with high maneuverability. …

Technology Innovations And The Financial Services Industry., Olubukola Akinniyi Akinwunmi

Bullion

This article explores the future of the financial services industry in the context of new technologies. Technological innovations were reviewed and likely implications for the industry were highlighted. The article suggests that a symbiotic relationship among new and incumbent financial services providers will benefit the industry. Since technology is re-defining the financial services industry and the global financial system as undergone transformation in the last couple of decades.

Managing Technology In Financial Innovation, Frederick Betz

Engineering and Technology Management Faculty Publications and Presentations

The topic of managing technology had traditionally focused upon the manufacturing industries; but the service industries grew to become a major sector of industry and commerce. We examine how to manage technology in the financial commercial sector. What is innovation in the financial sector? How does innovation occur in the financial sector? What are the criteria of technology safety in financial innovations? Why did financial innovation contribute to financial instabilities, such as the Global Financial Crisis of 2007-08? Why had governmental agencies failed to properly regulate the financial sector for safety? How did U.S. government financial agencies handle that financial …

Selecting Medical Hardware Using Pairwise Comparisons: A Patient's Perspective Of Cochlear Implant Device Selection, Timothy R. Anderson, Shabnam Razeghian Jahromi

Engineering and Technology Management Faculty Publications and Presentations

Selecting medical hardware can be a difficult and permanent decision for patients that they are often unprepared for. The authors explore the use of pairwise comparison techniques to better inform medical decision making in an application of choosing between three major cochlear implant manufacturers. This paper appears to be the first study to apply a pairwise comparison decision making approach for cochlear implant device selection. Also, unlike many medical decision making studies that are developed by the healthcare professional, this model and analysis was conducted entirely by the patient for the purpose of making the real-world decision of a device. …

A Measurement System For Science And Engineering Research Center Performance Evaluation, Elizabeth Carole Gibson, Tugrul U. Daim

Engineering and Technology Management Faculty Publications and Presentations

This research is focused on gaining deeper insights into US National Science Foundation (NSF) science and engineering research center challenges and motivated to develop a method that effectively measures the performance of these organizations. While research has addressed organizational performance at the micro, or single-actor level for universities or companies and at the regional or national macro level, the middle level where the NSF centers reside is largely missing. The bulk of the cooperative research center studies use either case-based methods or bibliometric data to measure traditional research outputs. Many are excellent studies; however, they only focus on a piece …

Consistency Thresholds For Hierarchical Decision Model, Mustafa S. Abbas, Dundar F. Kocaoglu

Engineering and Technology Management Faculty Publications and Presentations

The objective of this research is to establish consistency thresholds linked to alpha (α) levels for HDM's (Hierarchical Decision Model) judgment quantification method. Measuring consistency in order to control it is a crucial and inseparable part of any AHP/HDM experiment. The researchers on the subject recommend establishing thresholds that are statistically based on hypothesis testing, and are linked to the number of decision variables and a level. Such thresholds provide the means with which to evaluate the soundness and validity of an AHP/HDM decision. The linkage of thresholds to a levels allows the decision makers to set an appropriate inconsistency …

An Inductive Ethnographic Study In Elderly Woman Technology Adoption And The Role Of Her Children, Noshad Rahimi, Antonie J, Jetter, Charles M. Weber

Engineering and Technology Management Faculty Publications and Presentations

Elderly woman strives to have a streamlined life surrounded by ease and familiarity. As she is aging, her desire for simplicity grows, her self-efficacy weakens, her prudency intensifies and her overall inclination toward status quo strengthens. As a result, she delays, or refuses, making any decision that might bring complexity and disrupt the continuity in her life, particularly new and unfamiliar technologies (which often bring complexity, before providing ease). Consequently, her technology adoption has a much lower rate than that of other demographics. To open the black box of elderly woman technology adoption process, this study focuses on the role …

Exploring The Adoption And Use Of The Smartphone Technology In Emerging Regions: Case Of Saudi Arabia, Fahad Aldhaban, Tugrul Unsal Daim, Robert R. Harmon

Engineering and Technology Management Faculty Publications and Presentations

This paper starts with a preliminary theoretical research model which is developed based on the Unified Theory of Acceptance and Use of Technology (UTAUT). A number of qualitative methods, namely brainstorming, focus group and individual interviews, have been conducted to evaluate, select and validate the existing factors, as well as introduce new factors, to identify only the most related factors to be included in the preliminary research model. A survey questionnaire has been developed and validated to survey general users of the Smartphone in Saudi Arabia. A web-based survey has been designed and sent through email to 5,000 randomly selected …

A Model Of Academic Community Entrepreneurship (Ace): Initiation, Innovation, And Impacts Of Picmet, Min-Seok Cha

Engineering and Technology Management Faculty Publications and Presentations

Entrepreneurship is the process of creating problem solving system that generate knowledge and provide value. It is also seen as an innovation engine. It could be applied in many fields including academic community. This attempt of creating academic community can be view as an academic entrepreneurship. The impactful process of academic entrepreneurship is worthwhile to be noticed and shared. Because PICMET has shown a model of building a sustainable scholar community and its coordinating organization in the international level, it could be a successful case of academic community entrepreneurship (ACE) Model. ACE is focused on creating new value of academic …

Technology Readiness, Market Readiness And The Triple Bottom Line: An Empirical Analysis Of Innovating Startups In An Incubator, Rainer Hasenauer, Andreas Gschöpf, Charles Weber

Engineering and Technology Management Faculty Publications and Presentations

This paper shares the experiences of INITS, a business incubator located in Vienna, Austria, which consults to startup firms in Austria and (with partners) in Europe. INITS has investigated the technology readiness levels and market readiness levels of 57 startup firms in a variety of industries, who are engaged in social or environmental entrepreneurship, where the impact motive prevails over the profit motive. Thus, INITS provides 57 longitudinal case studies of social and environmental innovation in startup firms that have gone through the complete incubation process. Thirteen of these cases underwent an 'open incubation' process developed by INITS. INITS has …

Survey Of Value Assessment Programs Within Transportation Construction Projects In U.S, Rafaa Khalifa, Robert Stewart

Engineering and Technology Management Faculty Publications and Presentations

In order to deliver transportation project on time and within budget, project planners and decision makers need to understand the desirable outcomes of projects or programs to make intelligent decisions. In addition, they also need effective tools and techniques to guide those decisions. In development of a guide that identifies available tools and techniques to foster useable and improved practices for key stakeholders of transportation projects, this paper as a preliminary study assessed current utilization of project delivery value improvement programs such as value engineering (VE), risk analysis/management (RA/RM) and constructability reviews (CR) for transportation projects. To determine whether states …

Managing The Ethical And Risk Implications Of Rapid Advances In Artificial Intelligence: A Literature Review, Taylor Meek, Husam Barham, Nader Beltaif, Amani Kaadoor, Tanzila Akhter

Engineering and Technology Management Faculty Publications and Presentations

The development of emergent technologies carries with it ethical issues and risks. We review ways to better manage the ethical issues and risks of one emerging technology: Artificial Intelligence (AI). Depending on how AI's development is managed, it may have beneficial and/or deleterious effects. The processing capacity of Tianhe-2, the world's fastest supercomputer, by some measures, exceeds the processing capacity of a single human brain. but at a prohibitive processing/power consumption ratio and physical size. Given the current pace of AI R&D activities, some estimates in the literature suggest that the technology could become capable of self-determination and super intelligence …

A Hierarchical Decision Model (Hdm) For Exploring The Adoption Of Electronic Health Records, Caroline Mudavadi, Liliya Hogaboam, Tugrul Unsal Daim

Engineering and Technology Management Faculty Publications and Presentations

Information systems have been making a noticeable entrance in the healthcare, although their adoption has been slow. This paper examines the factors influencing the electronic healthcare records (EHR) adoption by modeling behavioral intention of physicians towards EHR adoption. Three main criteria: perceived usefulness, perceived ease of use and external factors along with the subcriteria, are studied by the authors. Analytical hierarchical process (AHP) model is tested through the expert judgment quantification of physicians in Portland metro area. The results showed high importance of the Perceived Ease of Use criteria on the behavioral intensions of physicians towards EHR adoption. Search ability …

Impacts To Productivity In Metal Stud Framing, And The Hanging And Finishing Of Gypsum Drywall, Gerald H. Williams Jr., Timothy R. Anderson

Engineering and Technology Management Faculty Publications and Presentations

Stud Framing, Drywall, and Tape and Finishing trade-work is a major component of every building project. Labor productivity is the largest single variable affecting of the Framing and Drywall contractors' cost of performance. In spite of these facts, no major study of labor productivity in this major construction trade has previously been done. This study was undertaken to fill this gap in the literature; specifically to investigate external impacts to labor productivity in this construction sector. The study measured the impact of thirty-eight (38) variables on 226 separate projects. The study found that poor quality design documents, unexpected labor congestion, …

Technology Evaluation Of Robotics Technology In Power Industry, Byung Sung Yoon, Judith Estep, Terry Oliver, Robert Grizzi

Engineering and Technology Management Faculty Publications and Presentations

The electric power utilities as important social infrastructures should be operated stably without any failure in supply of electricity. For stable operation, it is necessary to input huge amount of resource and investment throughout power generation, transmission and distribution facilities. Particularly, constant inspection and maintenance of the facilities requires highly skilled manpower and advanced technologies. In spite of endless efforts, the electric power industry is facing serious challenges from social, economic and environmental problems. In this regard, a number of robotic systems have been tested and applied for inspection and maintenance in nuclear power plants and high voltage power transmission …

Understanding Risk Perception Using Fuzzy Cognitive Maps, Pei Zhang, Antoine J. Jetter

Engineering and Technology Management Faculty Publications and Presentations

When making decision that can have far-researching effects, such as governmental policies or decisions on new technologies, decision-makers use their understanding of the risks that are associated with their choices to guide their decisions. Measuring how people perceive risks can be helpful for understanding and possibly improving the decision-making process. Building on a review of existing methods for investigating risk perceptions, this paper suggests Fuzzy Cognitive Maps (FCM) as a method for investigating differences in risk perception among stakeholders and stakeholder groups. The approach is illustrated with an example of wildfire risk perceptions. Results suggest that FCM can contribute to …

Decision-Making Model On Dslr Camera Choosing For 18 ∼ 30 Years Old College Students, Pei Zhang, Chih-Jen Yu, Jiabing Zhang, Monticha Khammuang, Dundar F. Kocaoglu

Engineering and Technology Management Faculty Publications and Presentations

A 3-level Hierarchical Decision Model (HDM) 111 is established in this paper to help 18-30 year old college students make a decision of choosing a desirable digital single-lens reflex camera (DSLR) from 5 famous DSLR camera manufacturers. The HDM has been utilized in this paper, because it measures the relative contribution of each criterion to the final decision based on quantified judgments of the respondents. A group of experts, consists of 12 male and 9 female provided their quantified judgements with different weighted value in each element at each level of the decision hierarchy. By applying desirable functions, there was …