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Articles 1 - 30 of 99
Full-Text Articles in Engineering
Advanced Signal Processing Techniques For Single Trial Electroencephalography Signal Classification For Brain Computer Interface Applications, Kun Li
USF Tampa Graduate Theses and Dissertations
Brain Computer Interface (BCI) is a direct communication channel between brain and computer. It allows the users to control the environment without the need to control muscle activity [1-2]. P300-Speller is a well known and widely used BCI system that was developed by Farwell and Donchin in 1988 [3]. The accuracy level of the P300-BCI Speller as measured by the percent of communicated characters correctly identified by the system depends on the ability to detect the P300 event related potential (ERP) component among the ongoing electroencephalography (EEG) signal. Different techniques have been tested to reduce the number of trials needed …
A Framework For Determining The Reliability Of Nanoscale Metallic Oxide Semiconductor (Mos) Devices, Wilkistar Otieno
A Framework For Determining The Reliability Of Nanoscale Metallic Oxide Semiconductor (Mos) Devices, Wilkistar Otieno
USF Tampa Graduate Theses and Dissertations
An increase in worldwide investments during the past several decades has pro-pelled scienti c breakthroughs in nanoscience and technology research to new and exciting levels. To ensure that these discoveries lead to commercially viable prod-ucts, it is important to address some of the fundamental engineering and scientific challenges related to nanodevices. Due to the centrality of reliability to product integrity, nanoreliability requires critical analysis and understanding to ensure long-term sustainability of nanodevices and systems. In this study, we construct a relia-bility framework for nanoscale dielectric lms used in Metallic Oxide Semiconductor (MOS) devices. The successful fabrication and incorporation of metallic …
Comparison Of Safety Performance By Design Types At Freeway Diverge Areas And Exit Ramp Sections, Hongyun Chen
Comparison Of Safety Performance By Design Types At Freeway Diverge Areas And Exit Ramp Sections, Hongyun Chen
USF Tampa Graduate Theses and Dissertations
The primary objective of the study is to evaluate the safety performance of different freeway exit types used in current practical designs. More specific, the research objectives include the following two parts: 1) to compare the safety performance of different design types at freeway diverge areas and exit ramp sections; and 2) to identify the impact factors contributing to the crashes happening at these two specific segments.
The study area includes four subjects, the freeway widely-spaced diverge areas; the freeway closely-spaced diverge areas; the left-side off-ramps and the exit ramp sections. For the freeway diverge areas, design types were defined …
Minerva 2010, The Honors College
Minerva 2010, The Honors College
Minerva
This issue of Minerva celebrates the 75th anniversary of Honors at the University of Maine! It includes an article on the college's 75th anniversary celebration; a look into the inaugural Center for Undergraduate Research (CUGR) symposium; and discussions on 2010 Honors Read, Persepolis, as well as 2011 Honors Read, The Omnivore's Dilemma. Other highlights include an article on Honors graduate and historian, Kristen Gwinn, and her book Emily Greene Balch: The Long Road to Internationalism.
Leaching Mechanism Of Semiconducting Minerals, Fathi Habashi
Leaching Mechanism Of Semiconducting Minerals, Fathi Habashi
Fathi Habashi
The mechanism of leaching of semiconducting minerals such as PbS, ZnS, UO2, etc., has been the subject of intensive speculation by hydrometallurgists in the early 1950s. The electrochemical mechanism proposed in 1970 by the author in volume 2 of his Principles of Extractive Metallurgy avoids the assumption of forming intermediate complexes that cannot be isolated or identified.
Postures Féminines Dans L’Oeuvre De Calixthe Beyala, Carmen Husti-Laboye
Postures Féminines Dans L’Oeuvre De Calixthe Beyala, Carmen Husti-Laboye
Présence Francophone: Revue internationale de langue et de littérature
The aim of this paper is to analyze, through the example of the feminist positions proposed by Calixthe Beyala in the novels she wrote between 1987 and 2007, the change of the novelist’s ideological and artistic perspective. It emphasizes the progressive loss of critical voice to the advantage of a new voice wishing to understand itself as individuality in its world. This study reveals the novelist’s contribution to the construction of a new position of the individual in the context of French social and cultural life.
The U2 Spy Plane Crisis: Turning Point In The Cold War, William Weiss
The U2 Spy Plane Crisis: Turning Point In The Cold War, William Weiss
ERAU Prescott Aviation History Program
When the Soviets shot down Francis Gary Powers’ U2 spy plane in 1960, it caused an international crisis. Thanks to recently declassified US and former Soviet archives, we can now hear the inside story of what really happened as told by an American History writer & lecturer.
The Conversion Of Low-Grade Heat Into Power Using Supercritical Rankine Cycles, Huijuan Chen
The Conversion Of Low-Grade Heat Into Power Using Supercritical Rankine Cycles, Huijuan Chen
USF Tampa Graduate Theses and Dissertations
Low-grade heat sources, here defined as below 300 ºC, are abundantly available as industrial waste heat, solar thermal, and geothermal, to name a few. However, they are under-exploited for conversion to power because of the low efficiency of conversion. The utilization of low-grade heat is advantageous for many reasons. Technologies that allow the efficient conversion of low-grade heat into mechanical or electrical power are very important to develop.
This work investigates the potential of supercritical Rankine cycles in the conversion of low-grade heat into power. The performance of supercritical Rankine cycles is studied using ChemCAD linked with customized excel macros …
The Yemen Narrative: Cargo Cults And Cargo Security, Ibpp Editor
The Yemen Narrative: Cargo Cults And Cargo Security, Ibpp Editor
International Bulletin of Political Psychology
The author gives a psychological perspective on the security of aviation cargo shipments.
Autonomous Underwater Vehicles As Tools For Deep-Submergence Archaeology, Christopher N. Roman, Ian Roderick Mather
Autonomous Underwater Vehicles As Tools For Deep-Submergence Archaeology, Christopher N. Roman, Ian Roderick Mather
Graduate School of Oceanography Faculty Publications
Marine archaeology beyond the capabilities of scuba divers is a technologically enabled field. The tool suite includes ship-based systems such as towed side-scan sonars and remotely operated vehicles, and more recently free-swimming autonomous underwater vehicles (AUVs). Each of these platforms has various imaging and mapping capabilities appropriate for specific scales and tasks. Broadly speaking, AUVs are becoming effective tools for locating, identifying, and surveying archaeological sites. This paper discusses the role of AUVs in this suite of tools, outlines some specific design criteria necessary to maximize their utility in the field, and presents directions for future developments. Results are presented …
Plasma Mediated Molecular Delivery, Richard J. Connolly
Plasma Mediated Molecular Delivery, Richard J. Connolly
USF Tampa Graduate Theses and Dissertations
Non-viral delivery of plasmid DNA has traditionally relied upon physical forces applied directly to target tissues. These physical methods typically involve contact between an applicator and the target tissue and often cause transient patient discomfort. To overcome the contact-dependent limitations of such delivery methodologies, an atmospheric direct current plasma source was developed to deposit ionized gas molecules onto localized treatment sites. The deposition of charged species onto a treatment site can lead to the establishment of an electric field with strengths similar to those used for traditional electroporation. In vitro experiments proved that this technology could transiently permeabilize cell membranes …
Modeling And Predicting Taxi Times At Airports, Arjun Chauhan
Modeling And Predicting Taxi Times At Airports, Arjun Chauhan
USF Tampa Graduate Theses and Dissertations
This research aims at providing methods in analyzing and estimating the taxi times of aircraft at airports, which are expected to be an important element for reducing taxiing delay and consequent excess fuel consumption and environmental costs. The proposed model involves a set of regression equations to model the taxi-out and taxi-in times at airports. The estimated results can be used to calculate the nominal taxi times, which are essential measures for evaluating the taxiing delays at airports. Given the outcomes of the regression model, an iterative algorithm is developed to predict taxi times. A case study at LGA shows …
Understanding The Interaction Between Blood Flow And An Applied Magnetic Field, Francy L. Sinatra
Understanding The Interaction Between Blood Flow And An Applied Magnetic Field, Francy L. Sinatra
USF Tampa Graduate Theses and Dissertations
Hemodynamic monitoring is extremely important in the accurate measurement of vital parameters. Current methods are highly invasive or noncontinuous, and require direct access to the patient’s skin. This study intends to explore the modulated magnetic signature of blood method (MMSB) to attain blood flow information. This method uses an applied magnetic field to magnetize the iron in the red blood cells and measures the disturbance to the field with a magnetic sensor [1]. Exploration will be done by experimentally studying in-vitro, as well as simulating in COMSOL the alteration of magnetic fields induced by the flow of a magnetic solution. …
Design And Fabrication Of A Membrane Integrated Microfluidic Cell Culture Device Suitable For High-Resolution Imaging, Alla A. Epshteyn
Design And Fabrication Of A Membrane Integrated Microfluidic Cell Culture Device Suitable For High-Resolution Imaging, Alla A. Epshteyn
USF Tampa Graduate Theses and Dissertations
Malaria remains a serious concern for people living and traveling to warm climates in Africa, Asia, and some parts of America. Understanding the mechanism of the malaria parasite in the liver phase could lead to important discoveries for preventative and treatment therapeutics before the disease develops into the blood stage. While in vitro liver cell culture models have been explored, a device that mimics the liver cell architecture with the capability of high-resolution imaging has never been created. In this research, a cell culture microfluidic device was designed and fabricated with a membrane integrated design to mimic the architecture of …
Continuous Electrowetting Actuation Utilizing Current Rectification Properties Of Valve Metal Films, Corey M. Lynch
Continuous Electrowetting Actuation Utilizing Current Rectification Properties Of Valve Metal Films, Corey M. Lynch
USF Tampa Graduate Theses and Dissertations
Electrowetting on dielectric (EWOD) is a technique for reducing the apparent contact angle of a fluid droplet, which has many promising applications in the fields of optics, digital displays, and lab-on-a-chip research. In this thesis, a design is presented for a novel single circuit device for achieving continuous droplet motion, by using the current-rectifying properties of valve metals to create diode-like behavior. This contrasts with existing designs, which require an array of individual electrodes to achieve motion in discrete steps. We are able to demonstrate continuous droplet motion across a 28mm-long test strip with an applied voltage of 303 V …
The Green And Ampt Infiltration Model Accounting For Air Compression And Air Counterflow In The Shallow Water Table Environment: Laboratory Experiments, Yuliya Lukyanets
The Green And Ampt Infiltration Model Accounting For Air Compression And Air Counterflow In The Shallow Water Table Environment: Laboratory Experiments, Yuliya Lukyanets
USF Tampa Graduate Theses and Dissertations
Water infiltration into the unsaturated zone especially in a shallow water table environment is affected by air compression ahead of the wetting front and air counterflow. Neglecting air compression in infiltration modeling can overestimate infiltration and infiltration rates, whereas not accounting for air counterflow can underestimate infiltration and infiltration rates due to unrealistic buildup of air pressure resistance ahead of the wetting front. A method, derived on the basis of the Green and Ampt (1911) infiltration model, is introduced to simulate air compression and air counterflow during infiltration into a shallow water table. The method retains the simplicity of the …
Exploring The Human Interactivity With A Robot To Obtain The Fundamental Properties Of Materials, William L. Christian
Exploring The Human Interactivity With A Robot To Obtain The Fundamental Properties Of Materials, William L. Christian
USF Tampa Graduate Theses and Dissertations
This research studies the way in which humans and robots interact with each other. When two humans are working together through a set of robotic devices, do they tend to work together or fight with each other more? In which Cartesian direction do they have the most difficulty? Does fighting drastically affect the performance of the team? Finally, what measures can be taken to promote better cooperation between humans and robots to ultimately allow humans to work just as comfortably with a robotic partner as with a human partner? This research answers these questions and provides an analysis of human-robot …
The Virtual Hip: An Anatomically Accurate Finite Element Model Based On The Visible Human Dataset, Jonathan M. Ford
The Virtual Hip: An Anatomically Accurate Finite Element Model Based On The Visible Human Dataset, Jonathan M. Ford
USF Tampa Graduate Theses and Dissertations
The purpose of this study is to determine if element decimation of a 3-D anatomical model affects the results of Finite Element Analysis (FEA). FEA has been increasingly applied to the biological and medical sciences. In order for an anatomical model to successfully run in FEA, the 3-D model’s complex geometry must be simplified, resulting in a loss of anatomical detail. The process of decimation reduces the number of elements within the structure and creates a simpler approximation of the model. Using the National Library of Medicine’s Visible Human Male dataset, a virtual 3-D representation of several structures of the …
Santa Clara Magazine, Volume 52 Number 2, Fall 2010, Santa Clara University
Santa Clara Magazine, Volume 52 Number 2, Fall 2010, Santa Clara University
Santa Clara Magazine
16 - JUSTICE, EDUCATION, AND THE CATHOLIC IMAGINATION By Keith Warner, O.F.M. A religious vision of a sustainable future is less about politics than ethics. It means drawing on deep spiritual currents in the Catholic tradition-and environmental concern as if people mattered.
22 - WRITING THE ISLAND An essay in the words and images by John Seibert Farnsworth and Charles Barry. A journey to the Sea of Cortez-to paddle and dive, to hear the island speak, to look carefully, to write, to come home sunburned and transformed.
30 - INTERNET, WE HAVE A PROBLEM. By Sam Scott '96. One fine …
A Day In The Life Of A Float Plane Charter Pilot, Bryan Cox
A Day In The Life Of A Float Plane Charter Pilot, Bryan Cox
ERAU Prescott Aviation History Program
Ever taken a float plane trip or wanted to? Learn what it’s like to be a float plane pilot doing charter work in the Puget Sound area of Washington state. Hear this light-heated, informal, presentation by someone who has done all this for “fun and profit”!
Architecture And Compiler Support For Leakage Reduction Using Power Gating In Microprocessors, Soumyaroop Roy
Architecture And Compiler Support For Leakage Reduction Using Power Gating In Microprocessors, Soumyaroop Roy
USF Tampa Graduate Theses and Dissertations
Power gating is a technique commonly used for runtime leakage reduction in digital CMOS circuits. In microprocessors, power gating can be implemented by using sleep transistors to selectively deactivate circuit modules when they are idle during program execution. In this dissertation, a framework for power gating arithmetic functional units in embedded microprocessors with architecture and compiler support is proposed. During compile time, program regions are identified where one or more functional units are idle and sleep instructions are inserted into the code so that those units can be put to sleep during program execution. Subsequently, when their need is detected …
Design Of A New Suturing And Knot Tying Device For Laparoscopic Surgery, Sinan Onal
Design Of A New Suturing And Knot Tying Device For Laparoscopic Surgery, Sinan Onal
USF Tampa Graduate Theses and Dissertations
Minimally invasive or laparoscopic surgery has completely changed the focus of surgery becoming an alternative to various types of open surgery. Minimally invasive surgery avoids invasive open surgery as the operation is performed through one or more small incisions in the abdomen and using a small camera called laparoscope. Through these incisions, surgeons insert specialized surgical instruments to perform the operation resulting in less postoperative pain, shorter hospital stay, and faster recovery. However, the main problems during minimally-invasive surgery are the limited space for operating instruments and the reduced visibility and range of motion inside the patient’s body. During minimally-invasive …
A Roof Runoff Strategy And Model For Augmenting Public Water Supply, Robert Carnahan
A Roof Runoff Strategy And Model For Augmenting Public Water Supply, Robert Carnahan
USF Tampa Graduate Theses and Dissertations
Water is the essential resource that is becoming extremely scarce worldwide. The 21st century will further stress all available water resources through the growth and expansion of developing nations. It is not only the quantity of cheap water that is being depleted, but the quality of these waters is being endangered. Florida is an example where rapid development and an exploding population are competing for shrinking groundwater resources. Current water use does not address the use of alternative supplies and reuses in the United States.
The objective of this research was to determine a strategy for augmenting existing water supplies …
Enhancement Of Predictive Capability Of Transit Boardings Estimation And Simulation Tool (Tbest) Using Parcel Data: An Exploratory Analysis, Tejsingh Rana
USF Tampa Graduate Theses and Dissertations
TBEST is a comprehensive third generation transit demand forecasting model, developed by the FDOT Public Transit Office (PTO) to help transit agencies in completing their Transit Development Plans (TDPs). The on-going project funded by FDOT, related to TBEST, aims at further enhancing the capabilities of the TBEST model based on additional opportunities identified by the research team. The project focuses on enhancing TBEST’s capabilities in following areas: 1) Improving the precision of socio- demographic data by using property appraisal data (parcel data) and, 2) Improving the quality of data regarding trip attraction. Based on the improvement areas, this study aims …
An Analysis Of The Travel Patterns And Preferences Of The Elderly, Sujan Sikder
An Analysis Of The Travel Patterns And Preferences Of The Elderly, Sujan Sikder
USF Tampa Graduate Theses and Dissertations
The number of elderly is increasing; to meet their transportation needs, it is important to clearly understand their travel patterns and preferences. Since travel patterns and preferences depend on socio-demographic and other factors, it is essential to identify these factors first to understand the travel behavior of the elderly. The main purpose of this thesis is to analyze the travel patterns and preferences of the elderly age 65 and above using 2009 National Household Travel Survey (NHTS) data. This thesis presents a detailed descriptive analysis of 2009 NHTS data to understand the travel patterns of the elderly. Along with a …
Emergent Design Dissertation Errata, Kent D. Palmer
Emergent Design Dissertation Errata, Kent D. Palmer
Kent D. Palmer
Errors found in final dissertation
Metallurgy In The Roman Forts Of Scotland: An Archaeological Analysis, Scott S. Stetkiewicz
Metallurgy In The Roman Forts Of Scotland: An Archaeological Analysis, Scott S. Stetkiewicz
Honors Projects
Investigates the presence of metalworking in thirty-seven Roman forts in Scotland during the Flavian, Antonine, and Severan occupations largely through analysis of published documentation concerning relevant archaeological excavations.
Investigation Of Buildup Dose For Therapeutic Intensity Modulated Photon Beams In Radiation Therapy, Khosrow Javedan
Investigation Of Buildup Dose For Therapeutic Intensity Modulated Photon Beams In Radiation Therapy, Khosrow Javedan
USF Tampa Graduate Theses and Dissertations
Buildup dose of Mega Voltage (MV) photon beams can be a limiting factor in intensitymodulated radiation therapy (IMRT) treatments. Excessive doses can cause patient discomfort and treatment interruptions, while underdosing may lead to local failure.
Many factors which contribute to buildup dose, including the photon beam energy spectrum, scattered or contaminant radiation and their angular distribution, are not modeled well in commercial treatment planning systems. The accurate Monte Carlo method was employed in the studies to estimate the doses.
Buildup dose of 6MV photon beams was investigated for three fundamentally different IMRT modalities: between Helical TomoTherapy and traditional opposed tangential …
Design Collaboration As A Tool For Developing Diversity In The Work Place, Rees E. E. Shad
Design Collaboration As A Tool For Developing Diversity In The Work Place, Rees E. E. Shad
Publications and Research
Without a doubt the modern workplace is one made up of numerous working professionals graced with an array of varied abilities who work in tandem to meet a common goal. In this article the author recounts his personal journey to embracing the collaborative process and how he has honed and developed the skill set into an important element of design curriculum in order to prepare students for this fundamental market paradigm.
Gold Nanoparticles And Their Polymer Composites: Synthesis Characterization And Applications, Nidhi Joshi
Gold Nanoparticles And Their Polymer Composites: Synthesis Characterization And Applications, Nidhi Joshi
USF Tampa Graduate Theses and Dissertations
Gold nanoparticles are excellent candidates for all the biomedical applications due to their size and shape dependent optical and physiological properties. In this study, gold nanoparticles were synthesized chemically for bio-application. It was observed that the size and shape of gold nanoparticles depend strongly on the concentration of chemical solution, type of reducing agent used in the reaction, temperature of the solution and stabilizing agent for reaction. Transmission electron microscopy (TEM) has been used extensively to determine the size and shape of the gold nanoparticles. Optical properties of the size and shape selected nanoparticles were studied using UV-vis spectrophotometer in …