Simulation And Analysis Of Switched Reluctance Generator For Renewable Energy Applications, Simone Sartori, Malabika Basu, Michael Farrell, Andrea Tortella

Conference papers

The purpose of the paper is to investigate the application of a Switched Reluctance Generator (SRG) for future wave energy converters. This machine presents some favourable features as compared to others. The machine optimal operation can be obtained after a detailed assessment of the control strategy. For this purpose, a SRG model is implemented in Matlab® Simulink® environment to find out the values of the switching angles which maximize the converted power and to set up an appropriate control of the power exchange with the grid to which the machine is connected. The simulation results provide evidence that a proper …

Influence Of Magnetic Nanoparticles And Magnetic Stress On An Ionic Liquid Electrospray Source, Kurt Joseph Terhune

Dissertations, Master's Theses and Master's Reports

Two electrospray sources were developed to operate on an ionic liquid ferrofluid; one source was a pressure‑fed capillary electrospray source and the other was a novel electrospray source which used a magnetically‑induced instability to produce a peak from which an electric field could extract electrospray. Multiple characteristics of electrospray operation were examined for both sources using faraday plates/cups, a quartz crystal microbalance, a retarding potential analyzer, and a time-of-flight mass spectrometer. The ILFF electrosprays for a capillary source were shown to operate in a mixed ion/droplet regime. The mass flow of the electrospray beam was primarily transported by larger particles …

A Case Study Of Upper-Room Uvgi In Densely-Occupied Elementary Classrooms By Real-Time Fluorescent Bioaerosol Measurements, Chunxiao Su, Josephine Lau, Fang Yu

Durham School of Architectural Engineering and Construction: Faculty Publications

Recently, the requirement to continuously collect bioaerosol samples using shorter response times has called for the use of real-time detection. The decreased cost of this technology makes it available for a wider application than military use, and makes it accessible to pharmaceutical and academic research. In this case study, real-time bioaerosol monitors (RBMs) were applied in elementary school classrooms—a densely occupied environment—along with upper-room ultraviolet germicidal irradiation (UVGI) devices. The classrooms were separated into a UVGI group and a non-UVGI control group. Fluorescent bioaerosol counts (FBCs) were monitored on 20 visiting days over a four-month period. The classroom with upper-room …

Social Sustainability Indicators In Mass Housing Construction, Ali Karji, Asregedew Woldesenbet, Mostafa Khanzadi

Durham School of Architectural Engineering and Construction: Faculty Publications

In the construction industry, buildings constitute more than half of the new construction built in the world. With the rapid growth of population in urban areas and high-energy consumption of buildings, considerable attention and efforts have been devoted to creating a sustainably built environment. As a result, various sustainable rating systems, principles and tools have been developed in recent years. This paper presents efforts underway for evaluation of sustainability in mass housing construction projects in the Middle East from a social aspect. The study reviews reports, guidelines and best practices at national and international levels to detect key sustainability indicators. …

Heat - Pump System With Refrigerant Charge Diagnostics, Fadi M. Alsaleem, Gregg H. Hemmelgarn

Durham School of Architectural Engineering and Construction: Faculty Publications

A heat-pump circuit may include an indoor heat exchanger, an outdoor heat exchanger, a compressor adapted to circulate a working fluid between the indoor and outdoor heat exchangers, and an expansion device disposed between the indoor and outdoor heat exchangers. A monitor for the heat-pump system may include a return-air temperature sensor, a supply-air temperature sensor, and a processor. The return-air temperature sensor may be adapted to measure a first air temperature of air upstream of the indoor heat exchanger. The supply-air temperature sensor may be adapted to measure a second air temperature of air down stream of the indoor …

Economic Analysis For Residential Solar Pv Systems With Battery Storage In Pg&E Territory, Jayati Thakor

Cal Poly Humboldt theses and projects

Electricity storage can be used as a tool to help with a variety of issues related to electric grid management. Declining costs and state incentives could allow fast penetration of battery storage. Distributed PV systems are now widely used, and battery storage has potential to address issues related to generation intermittency. This thesis assesses the financial potential of PV systems with behind-the-meter battery storage in two communities in Pacific Gas and Electric (PG&E) territory. An analysis is performed to calculate annual savings for four cases. The batteries are used to avoid peak period charges under a time-of-use (TOU) rate plan. …

Effect Of Sintering Temperature On Microstructure, Corrosion Behavior, And Hardness Of Nanocrystalline Al-5at.%Ni And Al-5at.%V Alloys, Matthew G. Wachowiak

Williams Honors College, Honors Research Projects

The purpose of this project was to investigate thermal stability of high energy ball milled Al-5at.%Ni and Al-5at.%V alloys. Characterization was done by analyzing grain size and solid solubility. Samples were created using high energy ball milling, cold compaction to 3 GPa, and sintering from 100 °C to 500 °C at 100 °C increments, as well 450 °C and 614 °C. Microstructure, mechanical properties, and corrosion properties were determined using scanning electron microscopy, energy dispersive x-ray spectroscopy, x-ray diffraction, hardness testing, and cyclic potentiodynamic polarization. Vickers hardness of Al-5at.%Ni decreased with increasing temperature. For Al-at.%V, hardness increased with sintering temperature …

Multiplexed Sensor Array For Accurate Time-Of-Wetness (Tow) Measurement, Nathaniel G. Sutton, Hongbo Cong, Jiang John Zhe, Shengxi Li, Xiaoliang Zhu

Williams Honors College, Honors Research Projects

In this work, we use electrochemical impedance spectroscopy (EIS) to observe the response of a single, photo-lithographically created, interdigital transducer (IDT) sensor, dimensions 6mm X 6 mm, with capacitive elements 70μm X 500 nm. The IDT was exposed to different wetting conditions, droplets of DI water, 0.1 M NaCl, and 0.6 M NaCl, in volumes of 0.1, 0.3, 1, and 5 μL. Deliquescence of solid NaCl salt particles in a dynamic-humidity (%RH Increasing, 33% to 85%) atmosphere is examined. Equivalent circuit fitting of impedance spectra suggests linear trends for the capacitive equivalent circuit element parameters and a decaying logarithmic trend …

Linking Geospatial Engineering Into Collaborative Multidisciplinary Bim Projects - An Educational Perspective, Avril Behan, Helen Murray, Jonathan Argue, Ronan Hogan, Audrey Martin, Pat O'Sullivan, Robert Moore, Malachy Mathews

Conference papers

This paper describes the background to and execution of a postgraduate project undertaken by students on DIT's MSc in Geospatial Engineering (GeoEng) in support of a project on level 2 BIM being undertaken by students on the MSc in applied Building Information Modelling & Management (aBIMM) around the retrofit of and new build extension to the Grangegorman Clock Tower Building. In support of this requirement, an external and internal survey of the existing structure and its surrounding topography was required. The aBIMM students and staff acted as the Design Team who subcontracted the Geo Eng group who were organised into …

Wind Turbine Noise And Wind Speed Prediction, Tyler H. Blanchard

College of Graduate Studies: Theses & Dissertations

In order to meet the US Department of Energy projected target of 35% of US energy coming from wind by 2050, there is a strong need to study the management and development of wind turbine technology and its impact on human health, wildlife and environment. The prediction of wind turbine noise and its propagation is very critical to study the impacts of wind turbine noise for long term adoption and acceptance by neighboring communities. The prediction of wind speed is critical in the assessment of feasibility of a potential wind turbine site. This work presents a study on prediction of …

Solar Dryers For Tropical Food Preservation: Thermophysics Of Crops, Systems And Components, Vivek Tomar, G. N. Tiwari, Brian Norton

Articles

Drying reduces the moisture content of harvested crops thus slowing decay processes to enable longerterm storage. Solar dryers contain the crop being dried, to enhance solar energy collection incurring lower crop losses than are associated with open-sun drying and recurrent costs than are inherent to uses of fossil-fuels for drying. The influences of key environmental, operational and design parameters for solar dryers are discussed including: (i) psychrometry of drying processes and ambient conditions, (ii) how initial crop properties are converted to final desired product attributes, (iii) feasibility of using powered components such as fans and (iv) air-heating solar collector selection.

Accuracy Assessment Of 3d Point Clouds Generated By Photogrammetry From Different Distances, Zhongming An

Dissertations, Master's Theses and Master's Reports

Photogrammetry is playing more important role in many industries today, and thanks to Structure-from-Motion, 3D point clouds and 3D meshes can be produced and be used as a resource for surveying and documentation.

In this project, the accuracies of Structure-from-Motion generated point clouds from pictures taken from different distances are assessed to determine if the distance has a significant impact on the accuracy and what kind of pattern the accuracies will show if there is any. Due to space limit, an improvised turntable was used in order to mimic the condition where camera moves around the object. Multiple images were …

A Lattice Theoretic Look: A Negated Approach To Adjectival (Intersective, Neutrosophic And Private) Phrases, Florentin Smarandache, Selcuk Topal

Branch Mathematics and Statistics Faculty and Staff Publications

No abstract provided.

Lakebed Characterization Using Side-Scan Data For Investigating The Latest Lake Superior Coastal Environment Conditions, Hasan Salih Kulunk

Dissertations, Master's Theses and Master's Reports

This thesis provides a review of the development of hydrographic survey equipment and supporting geospatial equipment and technology such as GPS. Using SonarWiz, a sonar image processing software package, lakebed classification methodologies were evaluated for mapping Buffalo Reef in Lake Superior located near Gay, Michigan. The goal was to develop an approach to mapping the reef bed and delineating various components of the lake bottom, including stamp sands, which are migrating from the abandoned Gay copper processing stamp mill to the reef. This contamination of the reef is having an adverse effect on habitats important to local flora and fauna. …

Effects Of Transportation Hazards On High Barrier Flexible Packaging Films, Kyle Dunno

Journal of Applied Packaging Research

Two flexible food packaging barrier material film structures were employed for this research study to evaluate the effects of over-the-road truck transport. The films containing different barrier materials, ethylene-vinyl alcohol (EVOH) or aluminum oxide (AlOx), were selected based on their abundant use within the flexible food packaging arena. Pouches were formed and filled with tomato paste before being thermally processed then palletized for shipment. Pouches were shipped over-the-road via truck transport a distance of 2,500 miles. After transport, the oxygen transmission rate (OTR) of the pouches located on the bottom and top layers of the palletized loads were obtained and …

Scatterometry Of 50 Nm Half Pitch Features, Ruichao Zhu

Optical Science and Engineering ETDs

Metrology technologies are an essential adjunct to Integrated Circuit (I.C.) Semiconductor manufacturing. Scatterometry, an optical metrology, was chosen to measure 50 nm half pitch feature structures. A bread-board scatterometry system has been assembled to provide a non-contact, non-destructive, accurate and flexible measurement. A real-time, on-line scatterometry system has also been demonstrated and proven to provide a high throughput measurement.

Three different types of samples have been measured using the scatterometry setup. The wire-grid polarizer (WGP) sample has been made by Jet and Flash Nanoimprint Lithography with ~100 nm pitch and ~50 nm wide ~200 nm tall Al gratings on fused …

The Eco-Smart Can, Darack B. Nanto

Undergraduate Honors Theses

I noticed that maintenance workers had the same itinerary when emptying trashcans, meanwhile some trashcans needed to be emptied urgently. Traditionally, ETSU maintenance operate on daily routes to pick trash on designated time, regardless the level of the containers. The time, resources and labor invested in collecting the trash could be saved. Therefore, I decided to use the Internet of Things (IoT) to create a device that will optimize trash collection, to reduce costs and pollution.

Power-Weighted Divergences For Relative Attenuation And Delay Estimation, Ruairí De Fréin, Scott T. Rickard Prof

Articles

Power-weighted estimators have recently been proposed for relative attenuation and delay estimation in blind source separation. Their provenance lies in the observation that speech is approximately windowed-disjoint orthogonal (WDO) in the time-frequency (TF) domain; it has been reported that using WDO, derived from TF representations of speech, improves mixing parameter estimation. We show that power-weighted relative attenuation and delay estimators can be derived from a particular case of a weighted Bregman divergence. We then propose a wider class of estimators, which we tune to give better parameter estimates for speech.

Eastern Kentucky University's Program Of Distinction: Highlighting Research Within The Colege Of Justice And Safety, Naomi M. Sigler, Kayla Tunajek

Posters-at-the-Capitol

Posters at the Capitol 2016-2017 Abstract

University: Eastern Kentucky University – College of Justice & Safety

Program: Fire, Arson, and Explosion Investigation

Student Presenters: Kayla Tunajek and Naomi Sigler

Faculty Mentor: Paul Grant

Title: Eastern Kentucky University’s Program of Distinction: Highlighting Research within the College of Justice and Safety

Keywords: Program of Distinction; Eastern Kentucky University; fire programs; research projects; student opportunities.

ABSTRACT

This project is intended to represent the Program of Distinction at EKU. The fire program at Eastern provides students several unique majors and encourages students to do research within their respective fields. This research is then presented …

High Power Optically Pumped Semiconductor Lasers For Sodium Guidestar Applications, Shawn W. Hackett

Optical Science and Engineering ETDs

Optically pumped semiconductor lasers (OPSLs) are shown to provide a much more compact and less expensive source for illumination of the sodium layer of the mesosphere for use as a sodium laser guidestar via single and two photon excitation schemes. This represents a revolution in laser guidestar technology as the cost, size, and power requirements for a laser guidestar system are shown to have been decreased by an order of magnitude with guidestar performance shown to be similar to previous sources. Sodium laser guidestar sources for broadband simultaneous illumination of multiple lines are developed and simulated. Simulations are then compared …

Image Text Search And Retrieval System, Wayne De Fremery, Sanghun Kim

Barowsky School of Business | Faculty Patents

An imaging device comprising a flexible sensor attached to a control case. The flexible sensor provides both a source of illumination to the image being captured and a method of capturing the image. The method of capture comprises a field of reactors disbursed across the facial area of the sensor, the output of which produces a dot-pattern capture of the intended image which is passed to a storage device.

Product Realization Of A Child’S Occupational Therapy Device Using Nasa’S Systems Engineering Processes, Chris Beckham, Greg Duke

Von Braun Symposium Student Posters

No abstract provided.

Collecting, Preparing, And Synthesizing Well Log Data For Subsurface Mapping: Example From The Bakken Formation, Asel Sherimkulova

Graduate Theses & Non-Theses

Late Devonian and Early Mississippian Bakken Formation consists of three distinct members: the upper shale, middle, and lower shale. The upper and lower shales are excellent source rocks, rich in organic content. The organic material in the shales was derived from planktonic algae. Both the upper and lower shales were deposited during a transgressive event in hypoxic to anoxic conditions. The original total organic carbon content in the Bakken shales ranges from 20 to 22 weight percent, however; the content decreases to 10 to 17 weight percent as a result of maturation of hydrocarbons and primary expelling of oil. High …

Distributed Fiber-Optic Temperature Sensor Validations Using Field Deployments In The Flooded Orphan Boy Mine Shaft In Butte, Mt, Elliott Mazur

Graduate Theses & Non-Theses

The process of sensor validation through experimentation with the Omnisens Distributed Temperature and Strain (DITEST) Brillouin Optical Time Domain Analyzer (BOTDA) proved to be a challenging project. The project encompassed sensor calibrations, system error minimization, sensor network design and deployment, and the characterization of temperatures in the Orphan Boy Mine shaft. Fiber-optic cable sensor calibrations yielded linear relationship coefficients 0.6-1.0MHZ/°F, indicating a strong positive correlation between Brillouin Frequency Shifts and temperature. Calibrated sensors demonstrated accuracies near ±0.8°F using the corrected error bounds from residual analyses as the benchmark. Fiber-optic measurement accuracy and repeatability were controlled by user-selected signal interrogator settings …

Construction Professional Service Firm Management: A Longitudinal Study Of Strategic Planning In Irish Quantity Surveying Practices, Roisin Murphy

Conference papers

This paper reports on the ongoing investigation of strategic planning in Irish Quantity Surveying practices. The construction industry in Ireland has undergone a period of significant change in the last five years fuelling a shift in focus from tactical to strategic planning in professional service firms operating within the sector. A previous paper identified the type, scope and extent of strategic planning within Quantity Surveying (QS) practices in Ireland in the years up to and during the economic downturn. The current paper expands on the previous research by identifying changes in approach to strategic management within these professional service firms …

Proposal Of Hybrid Damping Package Design, Qi Zhang, Katsuhiko Saito, Katsushige Nagaoka

Journal of Applied Packaging Research

To protect products from shock and vibration during transport, Cushioning Packaging Design is implemented. The cushioning performance and anti-vibration performance of a package is tested by a drop test and a vibration test. The effectiveness of the cushioning during a drop test is predictable because the cushioning material`s thickness and bearing area are determined by the cushion curves which are plotted based on the results of the tests. However, an effective package-design method which can predict the package vibration of all the static stresses that are suitable for cushioning package design has not been established yet.thus, it remains uncertain until …

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 …

Improvement Of Wrecks Removal Mechanism In Inland Waters Of China : A Case Study On The Yangtze River, Chichao Jiang

Maritime Safety & Environment Management Dissertations (Dalian)

No abstract provided.

Designing And Building An Automatic Chamfer Grinder, William Johnson

Mahurin Honors College Capstone Experience/Thesis Projects

Modern day manufacturing is a demanding environment with a constant need for process improvement. As automation becomes more advanced, there are fewer jobs that must be completed by a human. In the case of Stupp Bridge Company, a local manufacturer of steel bridge girders, their workforce is highly skilled, so replacing mundane tasks with automation allow the skilled workers to focus on the difficult jobs. One such task is grinding a chamfer onto every leading edge of each girder flange, eight edges in total, ranging from 20 to 200 feet long. The purpose of this project was to design an …

Abstracts From The 2016 Ahac Conference, Erick Agrimson

2017 Academic High Altitude Conference

This is a listing of Abstracts from AHAC 2016