Engineering Commons^™

Technology From The Perspective Of Society And Public Interest, Chanwoon Park

Purdue Polytechnic Doctoral Dissertations

The ultimate goals of this study were to determine ways to reconcile technology with public interest and to understand the relationship between what we know and how we feel about technology. To achieve the goals, related literatures were reviewed; the mechanism of technology development was described with empirical data; and human perception of technology was tested with a survey. The duality of technology that implied technological inherencies of technical reason and social meanings was the principle assumption of the study. Neutrality of technology becomes a myth with the presence of social meanings embodied in technology. Given the huge impact of …

Study Of Knowledge-Based System (Kbs) And Decision Making Methodologies In Materials Selection For Lightweight Aircraft Metallic Structures, Pashupati R. Adhikari, Reza Mirshams

Journal of Applied Science & Engineering Technology

This paper presents an overview of knowledge-based system (KBS) in the context of decision making methodologies used in materials selection for the design of light weight aircraft metallic structures. Overall aircraft weight reduction means substantially less fuel consumption and better efficiency. Part of the solution to this problem is to find a way to reduce overall weight of metallic structures in the aircraft. Two distinct multiple criteria decision making (MCDM) methodologies are presented with examples featuring a set of short-listed materials suitable in the design of the structures. Pre-defined constraint values, mainly mechanical properties, are employed as relevant attributes satisfying …

Behavior-Based Freight Modeling At Metro, Chris Johnson, Bud Reiff

PSU Transportation Seminars

Chris Johnson and Bud Reiff will present on a behavior-based freight model being used at Oregon Metro. This model will replace Metro’s current truck model with a hybrid freight model that both represents multi-modal freight flows through elements of national and regional supply chains and simulates the movement of individual trucks and shipments on local networks. Model estimation and calibration will also require collection of behavioral data from shippers and receivers representing a wide range of industries, common and contract freight carriers, business that operate non-freight commercial vehicles, warehouse managers, and logistics agents.

Key project objectives:

• Develop tools to enable …

A Novel Technique For Designing High Power Semiconductor Optical Amplifier (Soa)-Based Tunable Fiber Compound-Ring Lasers Using Low Power Optical Components, Muhammad A. Ummy, Simeon Bikorimana, Roger Dorsinville

Publications and Research

A simple, stable and inexpensive dual-output port widely tunable semiconductor optical amplifier (SOA)-based fiber compound-ring laser structure is demonstrated. This unique nested ring cavity enables high optical power to split into different branches where amplification and wavelength selection are achieved by using low-power SOAs and a tunable filter. Furthermore, two Sagnac loop mirrors, which are spliced at the two ends of the compound-ring cavity not only serve as variable reflectors but also channel the optical energy back to the same port without using any high optical power combiner. We propose and discuss how the demonstrated fiber compound-ring laser structure can …

Children's Law Center Site Redevelopment, Caroline Olivia Haggard, Javonte Isaac, Joshua Joslin, E'Lexus Nelson, Ana Vieira, Adrien Williams, David Zalla

Senior Theses

Soda City Engineering and Consulting was contracted by the USC School of Law to redevelop the Children’s Law Center site in Columbia, SC. Currently, the site does not comply with current standards and specifications. The objective of this project is to completely redevelop the site with a new annex building and ensuring everything is up to code, while still allowing the historic structure to maintain its use throughout construction.

Interactions Of A Co-Rotating Vortex Pair At Multiple Offsets, Kyle Forster, Tracie Barber, Sammy Diasinos, Graham Doig

Aerospace Engineering

Two NACA0012 vanes at various lateral offsets were investigated by wind tunnel testing to observe the interactions between the streamwise vortices. The vanes were separated by nine chord lengths in the streamwise direction to allow the upstream vortex to impact on the downstream geometry. These vanes were evaluated at an angle of incidence of 8° and a Reynolds number of 7 x 10⁴ using particle image velocimetry. A helical motion of the vortices was observed, with rotational rate increasing as the offset was reduced to the point of vortex merging. Downstream meandering of the weaker vortex was found to …

Mechanical Engineering News, Georgia Southern University

Mechanical Engineering: News & Publications (2013-2023)

No abstract provided.

Fluid Isolator, Purdue Ect Team

ECT Fact Sheets Archive

The reliability of concrete infrastructure is vital to ensuring daily life, as well as commerce, can progress without interruption. From the pavement of interstate highways to the driveways and sidewalks in a local neighborhood, concrete is expensive to install and often even more expensive, and intrusive, when it needs to be replaced. Unfortunately, to maintain functionality in winter climates concrete is heavily exposed to deicing salts. This not only affects the roads, driveways, and sidewalks where salt is applied directly, but many other areas such as parking and residential garages where vehicles (and people) will track salt along with water …

Netpoint®, Purdue Ect Team

ECT Fact Sheets Archive

The vast majority of construction scheduling software uses a combination of spreadsheets and Gantt charts for developing and depicting Critical Path Method (CPM) schedules. While this paradigm works for the expert scheduler, it is not conducive to collaboration, and it is prohibitively difficult for non-scheduling experts to understand.

NetPoint® provides a dynamic, visual interface conducive to touch and gestural input. Activities are drawn directly on a time-scale and may be placed on the same row or arranged automatically using codes or the WBS. Such control of the presentation makes it easier to communicate the plan to any type of audience. …

Tum: Towards Ubiquitous Multi-Device Localization For Cross-Device Interaction, Han Xu, Zheng Yang, Zimu Zhou, Ke Yi, Chunyi Peng

Research Collection School Of Computing and Information Systems

Cross-device interaction is becoming an increasingly hot topic as we often have multiple devices at our immediate disposal in this era of mobile computing. Various cross-device applications such as file sharing, multi-screen display, and crossdevice authentication have been proposed and investigated. However, one of the most fundamental enablers remains unsolved: How to achieve ubiquitous multi-device localization? Though pioneer efforts have resorted to gesture-assisted or sensing-assisted localization, they either require extensive user participation or impose some strong assumptions on device sensing abilities. This introduces extra costs and constraints, and thus degrades their practicality. To overcome these limitations, we propose TUM, an …

College Of Engineering Senior Design Competition Spring 2017, University Of Nevada, Las Vegas

Fred and Harriet Cox Senior Design Competition Projects

Part of every UNLV engineering student’s academic experience, the senior design project stimulates engineering innovation and entrepreneurship. Each student in their senior year chooses, plans, designs, and prototypes a product in this required element of the curriculum. A capstone to the student’s educational career, the senior design project encourages the student to use everything learned in the engineering program to create a practical, real world solution to an engineering challenge. The senior design competition helps focus the senior students in increasing the quality and potential for commercial application for their design projects. Judges from local industry evaluate the projects on …

Using Phase For Radar Scatterer Classification, Linda J. Moore, Brian D. Rigling, Robert Penno, Edmund G. Zelnio

Electrical and Computer Engineering Faculty Publications

Traditional synthetic aperture radar (SAR) systems tend to discard phase information of formed complex radar imagery prior to automatic target recognition (ATR). This practice has historically been driven by available hardware storage, processing capabilities, and data link capacity. Recent advances in high performance computing (HPC) have enabled extremely dense storage and processing solutions. Therefore, previous motives for discarding radar phase information in ATR applications have been mitigated. First, we characterize the value of phase in one-dimensional (1-D) radar range profiles with respect to the ability to correctly estimate target features, which are currently employed in ATR algorithms for target discrimination. …

Brake Specific Fuel Consumption (Bsfc) In Gasoline Powered Cars, Michael Carlson, Dr. Cecilia J. Vogel

Celebration of Learning

The goal of this experiment was to determine which driving behaviors result in the highest fuel efficiency for a given trip. We collected data for speed (MPH), engine speed (RPM), engine power (Torque/LOD), and fuel consumption (MPG) using the ScanGauge II.

Mechanical Engineering News, Georgia Southern University

Mechanical Engineering: News & Publications (2013-2023)

• Engineering Honor Society Induction Ceremonies

Length Of Need And Minimum System Length For F-Shape Portable Concrete Barrier, Robert W. Bielenberg, Dylan T. Meyer, Ronald K. Faller, John D. Reid

Nebraska Department of Transportation: Research Reports

Portable concrete barrier (PCB) systems are often used to redirect errant vehicles through a combination of inertial resistance, lateral friction loads, and tensile loads developed from the mass and friction of the barrier segments. State departments of transportation (DOTs) and other end users may wish to utilize minimal length PCB installations to shield a hazard or work zone or limit the number of barriers required on the upstream and downstream ends to reduce overall system length. However, concerns with the performance of shorter PCB installations include increased lateral deflections and working widths and barrier pocketing. Additionally, no impact testing has …

Potential Benefits Of Combining Anomaly Detection With View Planning For Uav Infrastructure Modeling, R. Abraham Martin, Landen Blackburn, Joshua Pulsipher, Kevin W. Franke, John Hedengren

Faculty Publications

This paper presents a novel method for UAV-based 3D modeling of large infrastructure objects, such as pipelines, canals and levees, that combines anomaly detection with automatic on-board 3D view planning. The study begins by assuming that anomaly detections are possible and focuses on quantifying the potential benefits of the combined method and the view planning algorithm. A simulated canal environment is constructed, and several simulated anomalies are created and marked. The algorithm is used to plan inspection flights for the anomaly locations, and simulated images from the flights are rendered and processed to construct 3D models of the locations of …

Developing And Implementing An Online Research Data Repository For Your University Or College Campus, Raymond J. Uzwyshyn

Digital Initiatives Symposium

Data-driven research is becoming increasingly important on university and college campuses. Most US federal and many international granting agencies mandatorily require that researchers applying for public grants possess a data management plan and make their research and data publically available through online access. This presentation overviews online research data repositories and implementation strategies for university and college campus libraries. The presentation pragmatically surveys this newer technology landscape and how organizations can begin to think about and implement an online data research repository. This session will survey the landscape but also makes use of practical example from Texas State University and …

Mri Applications In Tissue Engineering, Shadi Othman

Science Seminar Series

Shadi Othman of the School of Engineering and Computer Science Bioengineering Program, will speak on his research on MRI applications in tissue engineering.

Method For The Production Of Substituted Polysaccharides Via Reactive Extrusion, Milford Hanna, Pratik Bhandari

Department of Agricultural and Biological Systems Engineering: Faculty Publications

A reactive extrusion process for the production of substituted polysaccharides, in particular, cellulose acetate, starch acetate, carboxymethyl cellulose, and carboxymethyl starch.

The present application claims the benefit of PCT/ US20111059785 filed on Nov. 8, 2011, which claimed the benefit of U.S. provisional application 611411,521, filed on Nov. 9, 2010, U.S. provisional application 611411,992, filed on Nov. 10, 2010, and U.S. provisional application 611472, 748, filed on Apr. 7, 2011, each of which is which is incorporated herein by reference in its entirety.

The production of substituted polysaccharides such as starch and cellulose acetates and carboxymethylated starches and celluloses have typically …

An Exact Analysis For Four-Order Acousto-Optic Bragg Diffraction Which Incorporates Both Incident Light Angle And Sound Frequency Dependencies, Adeyinka Sunday Ademola

Electrical Engineering Theses

This thesis extends the prior work which produced an exact solution to the four-order acousto-optic (AO) Bragg cell with assumed fixed center frequency and with exact Bragg angle incident light. The extension predicts the model that incorporates the dependencies of both the input angle of light and the sound frequency. Specifically, a generalized 4^th order linear differential equation (DE), is developed from a simultaneous analysis of four coupled AO system of DEs. Through standard methods, the characteristic roots, which requires solving a quartic equation, is produced. Subsequently, a derived system of homogeneous solutions, which absorbs the roots obtained using …

Studies In Mesoscopics And Quantum Microscopies, Zhenghao Ding, Gabriel C. Spalding

Honors Projects

This thesis begins with a foundational section on quantum optics. The single-photon detectors used in the first chapter were obtained through the Advanced Laboratory Physics Association (ALPhA), which brokered reduced cost for educational use, and the aim of the single-photon work presented in Chapter 1 is to develop modules for use in Illinois Wesleyan's instructional labs beyond the first year of university. Along with the American Association of Physics Teachers, ALPhA encourages capstone-level work, such as Chapter 1 of this honors thesis, which is explicitly designed to play the role of passing on, to a next generation of physics majors, …

Erratum To: Supplemental Vibrotactile Feedback Control Of Stabilization And Reaching Actions Of The Arm Using Limb State And Position Error Encodings, Alexis Krueger, Psiche Giannoni, Valay Shah, Maura Casadio, Robert A. Scheidt

Biomedical Engineering Faculty Research and Publications

The original article contained omissions mistakenly carried forward by the Production department handling this journal; these omissions related to missing ‘λ’ symbols throughout the article body, thus inaccurately representing the meaning of the associated text.

The article has now been updated to include these symbols in the appropriate sections of text to accurately reflect the conveyed implications.

Supplemental Vibrotactile Feedback Control Of Stabilization And Reaching Actions Of The Arm Using Limb State And Position Error Encodings, Alexis Krueger, Psiche Giannoni, Valay Shah, Maura Casadio, Robert A. Scheidt

Biomedical Engineering Faculty Research and Publications

Deficits of kinesthesia (limb position and movement sensation) commonly limit sensorimotor function and its recovery after neuromotor injury. Sensory substitution technologies providing synthetic kinesthetic feedback might re-establish or enhance closed-loop control of goal-directed behaviors in people with impaired kinesthesia.

Design & Analysis Of Cycloconverter To Run Split Phase Induction Motor Using Pwm Control, Iftakher Ahmed

Student Theses and Dissertations

Frequency drive is playing an important role for ever growing demand of industrial applications. Cycloconverter is one such device which generates variable frequency depending on the load. Semiconductor switching devices like Thyristor, Insulated Gate Bipolar Transistor (IGBT) make it possible to control the output frequency according to the requirement. Because of energy efficient characteristics, single phase induction motors are widely accepted in industrial sectors. To control the speed and electromagnetic torque of a motor for the particular frequency a Cycloconverter is used to increase the system frequency with a technique known as pulse width modulation (PWM) control. To drive varying …

Effects Of Bioengineering Scaffolds Releasing Neurotrophins And Body Weight Supported Treadmill Training On H-Reflex After Spinal Cord Injury, Jaclyn Ann Witko

Theses and Dissertations

Changes in monosynaptic reflex, often used to study spasticity, has been tested through the H-reflex in spinal cord injury (SCI) patients after rehabilitation training, such as body weight support treadmill training or cycling. The combinational effects of rehabilitation training and a bioengineered scaffold on spasticity in SCI animal model have not been studied. We used a clinically relevant animal model of spinal cord moderate contusion at T9/T10 with BWSTT and the bioengineered scaffold PNIPAAm-g-PEG loaded with the growth factors BDNF/NT-3 to measure the efficiency of the combinational bioengineered approach to treat spasticity. Five animal groups were included in the study: …

Testing And Evaluation Of Mash Tl-3 Transition Between Guardrail And Portable Concrete Barriers, Robert W. Bielenberg, Jessica L. Lingenfelter, Justine E. Kohtz, Ronald K. Faller, John D. Reid

Nebraska Department of Transportation: Research Reports

Three full-scale vehicle crash tests were conducted according to the Manual for Assessing Safety Hardware (MASH) Test Level 3 (TL-3) safety performance criteria on a transition between the Midwest Guardrail System (MGS) and a portable concrete barrier (PCB) system. The transition system utilized for test nos. MGSPCB-1 through MGSPCB-3 consisted of a standard MGS that overlapped a series of F- shape PCB segments that approached the MGS at a 15H:1V flare. In the overlapped portion of the barrier systems, uniquely-designed blockout holders and a specialized W-beam end shoe mounting bracket were used to connect the systems.

In test no. MGSPCB-1, …

Analysis Of Field And Force Calculation Of Multiple Rayleigh Scattering, Misuk Saha

Student Theses and Dissertations

Rayleigh approximation is one of the basic methods of studying electromagnetic (EM) scattering of light for spherical particle. We consider a large sphere consisting of many small Rayleigh particles, and then calculate the electric and magnetic fields of that large sphere. We simulate the field patterns of electric and magnetic field of a large sphere using discrete dipole approximation (DDA) method and compare the field patterns with Mie theory. We calculate the total numerical force acting on the sphere considering scattering and gradient force and calculate the same force using Chu stress tensor and Mie theory. We also figure out …

Implementation Of Range Autofocus For Sar Radar Imaging, Nicholas J. Testin, Philip Davis

KSU Journey Honors College Capstones and Theses

The range calculation for an FMCW radar depends on accurate linear modulation. In some circumstances, linear modulation may not be available and must be corrected for. This paper describes an autofocus technique used to correct for phase error due to non-linearities in the components of a FMCW radar. Also described here is the algorithm used in calculating the phase error and application of the phase correction with triangle modulation. Known errors were calculated at certain distances and applied to correcting the phase of data taken at similar distances. The results given were generated using a SAR working outside linear ranges.

A Constraint Programming Approach For The Team Orienteering Problem With Time Windows, Ridvan Gedik, Emre Kirac, Ashlea Bennet Milburn, Chase Rainwater

Mechanical and Industrial Engineering Faculty Publications

The team orienteering problem with time windows (TOPTW) is a NP-hard combinatorial optimization problem. It has many real-world applications, for example, routing technicians and disaster relief routing. In the TOPTW, a set of locations is given. For each, the profit, service time and time window are known. A fleet of homogenous vehicles are available for visiting locations and collecting their associated profits. Each vehicle is constrained by a maximum tour duration. The problem is to plan a set of vehicle routes that begin and end at a depot, visit each location no more than once by incorporating time window constraints. …

Vulnerability Of Coastal Connecticut To Sea Level Rise: Land Inundation And Impacts To Residential Property, Rebecca Andreucci, Can B. Aktas

Civil Engineering Faculty Publications

Vulnerability indices at the global or national scales require considerable data aggregation where local economic and social impacts remain unnoticed. The goal of this study was to analyze the extent of inundated land from sea level rise and its economic impacts to residential property in coastal communities. Geographic data were integrated with economic and social data at parcel level resolution through GIS. Cumulative land inundation in seven coastal municipalities was calculated as 15 and 25 km², while direct economic costs to residential property was estimated to be $1.3 billion and $2.2 billion for 1 and 2 m sea …