Engineering Commons^™

Modelling Hybrid Renewable Energy System For Philippine Merchant Marine Academy : A Feasibility Study, Nayan Guimpayan

World Maritime University Dissertations

No abstract provided.

Ship-Port Interface : Analysis Of The Cost-Effectiveness Of Cold Ironing At Mombasa Port, Ronald Ssali

World Maritime University Dissertations

No abstract provided.

Performance Evaluation And Solutions For Port Congestion Focused On The Container Terminal : A Case Study Of Khalifa Bin Salman Port (Kbsp) Kingdom Of Bahrain, Mohamed Ebrahim A.S. Alhameedi, Abud Jamal Said, Tri Wahyunita Mudjiono

World Maritime University Dissertations

No abstract provided.

Novel Design And Synthesis Of Composite Nanomaterials For Lithium And Multivalent Ion Batteries, Wangwang Xu

LSU Doctoral Dissertations

Nowadays, the fast-increasing energy demand for efficient, sustainable and environmentally-friendly energy storage devices remains a significant and challenging issue. Lithium ion batteries (LIBs) have been widely used as commercial energy devices in portable electronics and also shown great promise in upcoming large-scale applications due to their advantages of environmental safety, efficiency in energy delivering and light weight. However, due to their limited capacity, energy densities and cycle ability, LIBs still need further improvement to expand their applications to a larger field, especially electric vehicle (EVs) and hybrid electric vehicles (HEVs), in which energy storage devices with large capacity and high …

A Cost Benefit Analysis Of Using A Battery Energy Storage System (Bess) Represented By A Unit Commitment Model, Nemanja Mihailovic

USF Tampa Graduate Theses and Dissertations

This thesis aims to provide a general overview of a cost and benefit analysis of incorporating a battery energy storage system within unit commitment model.

The deregulation of the electricity market in the U.S. has only been around for the last two decades. With renewable energy and energy storage systems becoming less expensive, a decentralized market scheme is becoming more popular and plausible. The scope of this work is to provide a fundamental understanding of unit commitment and a cost analysis of applying a battery energy storage system to an already established power system.

A battery energy storage system (BESS) …

College Of Engineering News, Georgia Southern University

College of Engineering & Computing: News & Publications (2010-2023)

• LEAD: Women in Engineering & Technology

Acoustic Source Localization With A Vtol Suav Deployable Module, Kory Olney

USF Tampa Graduate Theses and Dissertations

A real time acoustic direction-finding module has been developed to estimate the ele- vation and azimuth of an impulsive event while function aboard a small unmanned air- craft vehicle. The generalized cross-correlation with phase transform method was used to estimate time differences of arrival in an 8 channel microphone array. A linear least squares approach was used to calculate an estimate for the direction of arrival. In order to accomplish this task, a vertical takeoff and landing small unmanned aircraft system was assembled to host the direction finding module. The module itself is made up of an eight-channel synchronous analog-to-digital …

Enhanced Co2 Conversion By The Simultaneous Doping Of Co, Fe, And Mn In The B-Site Of A Lanthanum Perovskite, Adela E. Ramos

USF Tampa Graduate Theses and Dissertations

There is a pressing need for carbon dioxide (CO₂) mitigation technologies as increasing emissions continue to threaten our environment. Carbon capture and storage (CCS) alone would not be able to achieve temperature rise below 2 °C. In addition, CCS cost increases considerably for power generation and other industries where CO₂ separation is necessary. Conversion of CO₂ to usable products is the most economical and feasible solution as it could offset CO₂ separation cost. Liquid fuels are an attractive route since it is a commodity used globally and demand increases with population and economic growth. Conversion …

In The Loop: Fall 2018

In The Loop

Letter from the Dean; Laugh Out Loud; Reel Rewind; Computer Science for All; The Truth Value Project; Seen and Heard; Bravo! Bravo!; Checkmate Cybercrimes; The Trendy Designer

The Santa Clara, 2018-11-01, Santa Clara University

The Santa Clara

No abstract provided.

Illuminator, Volume 2, Issue 3, Batten College Of Engineering & Technology, Old Dominion University

College of Engineering & Technology Newsletter

November 2018 issue of Illuminator, a monthly publication of ODU's Batten College of Engineering and Technology.

Environmental Water Transactions In The Colorado River Basin: A Closer Look, Leon Szeptycki, David Pilz, Rachel O'Connor, Beatrice Gordon

All In-stream Flows Material

Over the last 30 years, the voluntary transfer of water and water rights for environmental uses has become a recognized strategy for restoring streamflow in the Western United States.¹ Historically, taking water out of a stream was a legally required element of an appropriative water right. Water rights holders who left all or a portion of their right instream to enhance fish populations, riparian habitat or recreation, risked forfeiture or diminishment of their water right. Beginning in the 1980’s, state laws began to recognize both the appropriation of new water rights for instream use and to allow the transfer …

A Hybrid Clustering-Fusion Methodology For Land Subsidence Estimation, Narges Taravatrooy, Mohammad Reza Nikoo, Mojtaba Sadegh, Mohammad Parvinnia

Civil Engineering Faculty Publications and Presentations

A hybrid clustering-fusion methodology is developed in this study that employs Genetic Algorithm (GA) optimization method, k-means method, and several soft computing (SC) models to better estimate land subsidence. Estimation of land subsidence is important in planning and management of groundwater resources to prevent associated catastrophic damages. Methods such as the Persistent Scatterer Interferometric Synthetic Aperture Radar (PS-InSAR) can be used to estimate the subsidence rate, but PS-InSAR does not offer the required efficiency and accuracy in noisy pixels (obtained from remote sensing). Alternatively, a fusion-based methodology can be used to estimate subsidence rate, which offers a superior accuracy as …

Application Of A Light Switchable System In Redirecting Escherichia Coli Metabolic Fluxes, Xintong Xia

Graduate Theses - Chemical Engineering

Optogenetics has gained increasing attention for enabling reversible and non-invasive control in biochemical engineering. The purpose of this project is to investigate the application of a genetically engineered light-switchable system, Cph8-OmpR, for controlling the accumulation of the useful central metabolite glucose-6-phosphate (G6P) in Escherichia coli. This could be accomplished by linking expression of an adaptor protein, SspB, which increases enzyme phosphofructokinase (Pfk) degradation, with different light intensities. Pfk is the enzyme that catalyzes the conversion of fructose-6-phosphate (F6P), an isomer of G6P from an equilibrium reaction, to fructose 1,6-biphosphate for downstream metabolism. This step is considered the major control point …

Ecpe 121 - Simulink Labs, Cherian Mathews

Pacific Open Texts

Four laboratory exercises with detailed instructions were developed during Summer 2018 and used in ECPE 121 during the Fall 2018 semester to enhance student learning of the software tool, Simulink. In addition, a video introduction to Simulink was also created and can be viewed by clicking here.

Use of the simulation tool Simulink helps students explore a complex subject via computer simulation. Simulation complements the theory and can help students gain a deeper understanding of the concepts. The Simulink tutorial and lab resources were available for students to refer to at any time. Working through the lab exercises helped …

Scaling Nonreactive Cross Flow Over A Heated Plate To Simulate Forest Fires, Nikolay Gustenyov, Nelson Akafuah, Ahmad Salaimeh, Mark A. Finney, Sara Mcallister, Kozo Saito

Institute of Research for Technology Development Faculty Publications

The paper reports visualization of the flow of smoke over a flat surface inside of a low-speed wind tunnel. A heating plate flush mounted on the wind tunnel floor simulated a spreading line fire that produces uniform heat flux under constant wind speed condition. A paper-thin cloth was soaked with commercially available Vaseline and placed on top of the heating plate; when it is heated, it produced thick white smoke, ideal for flow visualization. Two sides and top of the wind tunnel were made of a trans- parent acrylic sheet that enabled LED and laser sheet light illumination of the …

Effect Of Geogrid Reinforcement On Railroad Ballast Performance Evaluated Through Triaxial Testing And Discrete Element Modeling, Yu Qian, Erol Tutumluer, Debakanta Mishra, Hasan Kazmee

Civil Engineering Faculty Publications and Presentations

Geogrids have been found to effectively improve the performance of unbound aggregate layers in transportation applications by providing confinement and arresting movement through interlock between individual aggregate particles and their apertures. Geogrid reinforcement offers an effective remedial measure when railroad track structures are susceptible to track geometry defects resulting from excessive movement and particle reorientation within the ballast layer. This paper presents an ongoing research study at the University of Illinois aimed at quantifying the effects of geogrid reinforcement on the shear strength and permanent deformation behavior of railroad ballast. Geogrids with triangular, rectangular, and square apertures were tested in …

Reactive Ion Plasma Modification Of Poly(Vinyl‐Alcohol) Increases Primary Endothelial Cell Affinity And Reduces Thrombogenicity, Patrick Jurney, Deirdre Anderson, Grace Pohan, Evelyn Yim, Monica Hinds

Faculty Publications

Bulk material properties and luminal surface interaction with blood determine the clinical viability of vascular grafts, and reducing intimal hyperplasia is necessary to improve their long‐term patency. Here, the authors report that the surface of a biocompatible hydrogel material, poly(vinyl alcohol) (PVA) can be altered by exposing it to reactive ion plasma (RIP) in order to increase primary endothelial cell attachment. The power and the carrier gas of the RIP treatment are varied and the resultant surface nitrogen, water contact angle, as well as the ability of the RIP‐treated surfaces to support primary endothelial colony forming cells is characterized. Additionally, …

The Development Of A Psychometric Test Aimed At Aligning Students To A Range Of Professional Roles, Darren Brian Carthy, Brian Bowe, Kevin Gaughan

Conference papers

Dublin Institute of Technology (DIT), working as part of the PREFER project, a European commission funded project, have developed a psychometric test in order to better align engineering students to three distinct professional roles within industry. This paper reports on the development process of the test, which took place between February and August of 2018.

Column-Footing Connection Evaluation Of Hollow-Core Composite Bridge Columns, Mohanad M. Abdulazeez, Mohamed Elgawady

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

This paper presents the seismic behavior of two large-scale hollow-core fiber-reinforced polymer-concrete-steel (HC-FCS) precast columns having two different footing connections. The precast HC-FCS column consists of a concrete shell sandwiched between an outer fiber-reinforced polymer (FRP) tube and an inner steel tube. The steel tube was embedded 635 mm (25 inches) into a reinforced concrete footing, while the outer FRP tube confined the concrete shell only i.e. it was truncated at the top surface of the footing. One connection included embedding the steel tube into the footing. The other one included using a corrugated steel pipe (CSP) embedded into the …

Acoustic Imaging With Metamaterial Luneburg Lenses, Yangbo Xie, Yangyang Fu, Zhetao Jia, Junfei Li, Chen Shen, Yadong Xu, Huanyang Chen, Steven A Cummer

Henry M. Rowan College of Engineering Departmental Research

The Luneburg lens is a spherically symmetrical gradient refractive index (GRIN) device with unique imaging properties. Its wide field-of-view (FoV) and minimal aberration have lead it to be successfully applied in microwave antennas. However, only limited realizations have been demonstrated in acoustics. Previously proposed acoustic Luneburg lenses are mostly limited to inherently two-dimensional designs at frequencies from 1 kHz to 7 kHz. In this paper, we apply a new design method for scalable and self-supporting metamaterials to demonstrate Luneburg lenses for airborne sound and ultrasonic waves. Two Luneburg lenses are fabricated: a 2.5D ultrasonic version for 40 kHz and a …

Feasibility Of Distributed Fiber Optic Sensor For Corrosion Monitoring Of Steel Bars In Reinforced Concrete, Liang Fan, Yi Bao, Genda Chen

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

This study investigates the feasibility of distributed fiber optic sensor for corrosion monitoring of steel bars embedded in concrete. Two sensor installation methods are compared: (1) attaching the sensor along the bar and (2) winding the sensor on the bar. For the second method, optical fibers were winded spirally on steel bars with different spacings: 0 mm, 2 mm, 5 mm, and 10 mm. Steel bar pull-out testing was conducted to evaluate the effect of presence of distributed sensor on the bond strength of steel—concrete interface. Electrochemical testing was carried out to assess the influence of the installation methods on …

Inspire E-News 11 2018, College Of Engineering And Applied Sciences

College of Engineering and Applied Sciences News

• Student Case Competition at ASEM's International Annual Conference
• Student receives scholarship from gear industry
• NSF grant allows important materials research
• NSF grant to speed pace of discovery in computing
• Powering up with a new partnership
• Innovation EXPO is a month from today!
• College Snapshot: Giving Day Results

Investigation Of Carrier Density And Mobility Variations In Graphene Caused By Surface Adsorbates, Hongmei Li, Xu Han, Anthony C. Childress, Apparao M. Rao, Goutam Koley

Publications

Conductivity, carrier concentration and carrier mobility in graphene were investigated as a function of time in response to ionized donor and acceptor adsorbates. While a reduction in conductivity and hole density in graphene was observed upon exposure to a weak electron donor NH₃, the carrier mobility was found to increase monotonically. The opposite behavior is observed upon exposure to NO₂, which is expected based on its typical electron withdrawing property. Upon exposure to C₉H₂₂N₂, a strong donor, it resulted in the transformation of graphene from p-type to n-type, although …

Development Of Statewide Annual Average Daily Traffic Estimation Model From Short-Term Counts: A Comparative Study For South Carolina, Sakib Mahmud Khan, Sababa Islam, Md Zadid Khan, Mashrur Chowdhury, Nathan Huynh, Mohammad Torkjazi

Publications

Annual Average Daily Traffic (AADT) is an important parameter for traffic engineering analysis. Departments of Transportation continually collect traffic count using both permanent count stations (i.e., Automatic Traffic Recorders or ATRs) and temporary short-term count stations. In South Carolina, 87% of the ATRs are located on interstates and arterial highways. For most secondary highways (i.e., collectors and local roads), AADT is estimated based on short-term counts. This paper develops AADT estimation models for different roadway functional classes with two machine learning techniques: Support Vector Regression (SVR) and Artificial Neural Network (ANN). The models predict AADT from short-term counts. The results …

Trident: Comprehensive Choke Error Mitigation In Ntc Systems, Aatreyi Bal, Sanghamitra Roy, Koushik Chakraborty

Electrical and Computer Engineering Faculty Publications

Near threshold computing (NTC) systems have been inherently plagued with heightened process variation (PV) sensitivity. Choke points are an intriguing manifestation of this PV sensitivity. In this paper, we explore the probability of minimum timing violations, caused by choke points, in an NTC system, and their nontrivial impacts on the system reliability. We show that conventional timing error mitigation techniques are inefficient in tackling choke point-induced minimum timing violations. Consequently, we propose a comprehensive error mitigation technique, Trident, to tackle choke points at NTC. Trident offers a 1.37 × performance improvement and a 1.11 × energy-efficiency gain over Razor at …

Mrsh-Mem: Approximate Matching On Raw Memory Dumps, Lorenz Liebler, Frank Breitinger

Electrical & Computer Engineering and Computer Science Faculty Publications

This paper presents the fusion of two subdomains of digital forensics: (1) raw memory analysis and (2) approximate matching. Specifically, this paper describes a prototype implementation named MRSH-MEM that allows to compare hard drive images as well as memory dumps and therefore can answer the question if a particular program (installed on a hard drive) is currently running / loaded in memory. To answer this question, we only require both dumps or access to a public repository which provides the binaries to be tested. For our prototype, we modified an existing approximate matching algorithm named MRSH-NET and combined it with …

Classification Of Intensity-Modulated Proton Therapy Plans, Louise Gabrielle Lima '19, Alice Liu '19

Student Publications & Research

Proton Radiotherapy

Proton radiotherapy is a form of radiation treatment that uses energized protons to break DNA, leading to cell death and killing cancers.

Evaluation Of The 20 L Dust Explosibility Testing Chamber And Comparison To A Modified 38 L Vessel For Underground Coal, Robert Quentin Eades, Kyle A. Perry, Catherine E. Johnson, Jacob Miller

Mining Engineering Faculty Research & Creative Works

The phenomenon of combustible dust explosions is present within many industries. Tests for explosibility of dust clouds per ASTM E1226 use a 20 L explosive chamber that places the combustible dust directly below the dispersion nozzle which generates a thorough mixture for testing purposes. However, in the underground coal mining industry, there are a number of geologic, mining, and regulatory factors that change the deposition scheme of combustible coal dust. This causes the atmosphere of a coal mine to have a variable rock dust-coal dust mixture at the time of ignition. To investigate the impact of this variable atmosphere, a …

Air Temperatures Tutorial, Nihad E. Daidzic

Aviation Department Publications

No abstract provided.