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Articles 17551 - 17580 of 19386
Full-Text Articles in Entire DC Network
Capturing The Cape: A Photographic Case Study Of The Cape Range Bioregion Of Northwest Australia, David J. Bradley
Capturing The Cape: A Photographic Case Study Of The Cape Range Bioregion Of Northwest Australia, David J. Bradley
ECU Research Week
No abstract provided.
Learning And Teaching Science In An Online World: An Exploration Of Pedagogical And Curriculum Innovations Afforded By The 1 To 1 Lap Top Program In Lower Secondary Science Classrooms, Julie Boston
Research Journeys in Education
No abstract provided.
Teaching And Learning Of Word Problems In Beginning Algebra, Omolola Ladele
Teaching And Learning Of Word Problems In Beginning Algebra, Omolola Ladele
Research Journeys in Education
No abstract provided.
Identification Of The Biogenic Compounds Responsible For Size-Dependent Nanoparticle Growth, Paul M. Winkler, John Ortega, Thomas Karl, Luca Cappellin, Hans R. Friedli, Kelley Barsanti, Peter H. Mcmurry, James N. Smith
Identification Of The Biogenic Compounds Responsible For Size-Dependent Nanoparticle Growth, Paul M. Winkler, John Ortega, Thomas Karl, Luca Cappellin, Hans R. Friedli, Kelley Barsanti, Peter H. Mcmurry, James N. Smith
Civil and Environmental Engineering Faculty Publications and Presentations
The probability that freshly nucleated nanoparticles can survive to become cloud condensation nuclei is highly sensitive to particle growth rates. Much of the growth of newly formed ambient nanoparticles can be attributed to oxidized organic vapors originating from biogenic precursor gases. In this study we investigated the chemical composition of size-selected biogenic nanoparticles in the size range from 10 to 40 nm. Particles were formed in a flow tube reactor by ozonolysis ofα-pinene and analyzed with a Thermal Desorption Chemical Ionization Mass Spectrometer. While we found similar composition in 10 and 20 nm particles, the relative amounts of …
The Contributors, Marites Tiongco
The Contributors, Marites Tiongco
DLSU Business & Economics Review
No abstract provided.
Determinants Of Dengue Transmission During Epidemic And Inter-Epidemic Periods In Two Colombian Cities, Yao Fu
Public Health Theses
Dengue fever is an urban disease that has a complex epidemiology consisting of alternating periods of intense epidemics and persistence in endemic locations. No studies have compared the patterns of geographic variation and determinants of dengue transmission in neighborhoods during epidemic and non-epidemic periods. Colombia's individual-based epidemiological surveillance system provides a unique opportunity to study this topic. The goal of this study was to better understand dengue epidemiology in two of the highest dengue fever reporting Colombian cities that vary in climate, Armenia (elevation 1320-1580 m, 21-23 C) and Barranquilla (elevation 5-134m . 27-30 C). We used a novel ecological …
An Environmental Systems Analysis Of Hydropower And Its Effects Upon Indigenous Settlements In Karnataka, India, Amy Joens
Honors Program Theses
Hydroelectricity is a very common method of energy production. Large dams are constantly being introduced to the river landscape in areas all over the world. There are definite benefits to hydropower, but the drawbacks may be even more evident. As modernization and development expand across developing nations like India, indigenous populations are often subject to the highest ration of negative impacts and consequences. This research explores both the costs and benefits of hydroelectricity, while using specific examples of dam construction projects to analyze aspects of the cumulative effects of a hydropower project. The Kabini Dam in southern Karnataka, India is …
A Study Of The Electrocoalescence On Spherical Droplets In A Flow Focusing Juction Microchannel, Shady A. Habib
A Study Of The Electrocoalescence On Spherical Droplets In A Flow Focusing Juction Microchannel, Shady A. Habib
Dissertations and Theses
No abstract provided.
Lattice Boltzmann Simulation Of Binary Drop Coalescence At Low Weber Number, Lina Baroudi
Lattice Boltzmann Simulation Of Binary Drop Coalescence At Low Weber Number, Lina Baroudi
Dissertations and Theses
"A numerical study has been performed using a lattice Boltzmann method (LBM) for an incompressible binary fluid based on the Cahn-Hilliard diffuse interface approach to investigate the early-time coalescence dynamics of two liquid drops. The two drops approach each other at a very low Weber number (We) and the coalescence process is driven by surface tension. When the two drops come into contact, the curvature diverges and causes infinitely large surface tension forces, leading to the formation of a rapidly growing liquid bridge. Depending on the forces that govern the widening of the liquid bridge, the coalescence dynamics can be …
Interaction Of Long- And Short-Term Memory On Selective Attention During Timbre Discrimination, Eva Garcia
Interaction Of Long- And Short-Term Memory On Selective Attention During Timbre Discrimination, Eva Garcia
Dissertations and Theses
The present study investigated the effects of short- and long-term memory on processes of selective attention during timbre discrimination. Pitch served as the distractor dimension, held constant on standard trials and deviating from the standard frequency on distractor trials. Short-term memory was operationalized as levels of covariate context: Within a block of trials, pitch deviants (p=.28) were either absent (baseline condition), varied orthogonally (filtering condition) or systematically (positive and perfect conditions) with timbre values. Long-term memory was operationalized as levels of psychophysical context: Within a block of trials, the range of pitch change was psychophysically equated with timbre change in …
The Influence Of Positive Affect And Anxiety On Attention And Creativity, Rafal Skiba
The Influence Of Positive Affect And Anxiety On Attention And Creativity, Rafal Skiba
Dissertations and Theses
The study examined naturally occurring effects of positive affect and anxiety (exam stress at different points in the semester) on attentional performance and creative abilities of undergraduate students. The mood of participants was measured by PANAS and STAI questionnaires. Their attention was tested on the Eriksen Flanker Task, and creativity on the Remote Associates Test (RAT) and Compound Word Problems (CWP). One of the main goals of this study was to verify the prediction based on the Broaden and Build theory of positive resources by Fredrickson (2001). Although the mood manipulation used in this study, that is, placing both testing …
Increasing Racial And Ethnic Diversity In The Field Of Art Therapy, Yasmine J. Awais
Increasing Racial And Ethnic Diversity In The Field Of Art Therapy, Yasmine J. Awais
Dissertations and Theses
No abstract provided.
Sociocultural Predictors Of Perceived Sexism In Urban College Students, Jennifer M. Grant
Sociocultural Predictors Of Perceived Sexism In Urban College Students, Jennifer M. Grant
Dissertations and Theses
No abstract provided.
Triangular Diplomacy And The End Of The Vietnam War; Forcible Diplomacy And Feeble Bombings, Christian Fauerbach
Triangular Diplomacy And The End Of The Vietnam War; Forcible Diplomacy And Feeble Bombings, Christian Fauerbach
Dissertations and Theses
No abstract provided.
On The Living Museum; Alexander Dorner And The Israel Museum, Jerusalem, Jacqueline M. Goldstein
On The Living Museum; Alexander Dorner And The Israel Museum, Jerusalem, Jacqueline M. Goldstein
Dissertations and Theses
No abstract provided.
The Polychromy Of Greek And Roman Art; An Investigation Of Museum Practices, Meghan Combs
The Polychromy Of Greek And Roman Art; An Investigation Of Museum Practices, Meghan Combs
Dissertations and Theses
No abstract provided.
Studies On Sucralose-Based Low Molecular Weight Gelators, Malick Samateh
Studies On Sucralose-Based Low Molecular Weight Gelators, Malick Samateh
Dissertations and Theses
Amphiphiles are molecules with both hydrophilic head and hydrophobic tail groups. Examples of amphiphiles include surfactants, detergents, soaps, bile acids/salts and lipids. Due to their amphiphilic nature, they tend to self-assemble in solution via non-covalent interactions such as hydrogen-bonding, π-π stacking and donor–acceptor interactions to form hierarchical morphologies like micelles, lamellae and fibers. The ones capable of subsequently forming gels are known as low molecular weight gelators (LMWGs). LMWGs usually form “polymer-like” fibers that interact to form a three-dimentional network known as a Self-Assembled Fibrillar Network (SAFIN), which entraps and immobilizes the entire solvent pool to form a viscoeslatic material …
Effects Of Arsenic And Uvb Radiation On Induction Of Cyclin D1 In Human Keratinocytes., Julian Gonzalez
Effects Of Arsenic And Uvb Radiation On Induction Of Cyclin D1 In Human Keratinocytes., Julian Gonzalez
Dissertations and Theses
Arsenic and Ultraviolet radiation B (UVB) are environmental toxins that have been linked to various epithelial cancers. Arsenic metabolism in humans leads to its collection in the skin, where it encounters and can act with known carcinogen UVB. Epidemiological evidence of the two toxins demonstrates their potential to affect signaling pathways, with various consequences. Here we employ an in vitro model system using Normal Human Epidermal Keratinocytes (NHEK) to identify the effect of arsenic and UVB on humans and whether they work synergistically. We find that although both cause induction of cyclin D1, culturing cells with both co-mutagens does not …
Azide-Benzyne Cycloaddition And Olefination To Vinyl Benzotriazoles, Singh Govindra
Azide-Benzyne Cycloaddition And Olefination To Vinyl Benzotriazoles, Singh Govindra
Dissertations and Theses
No abstract provided.
Multimedia Content-Based Indexing And Recognition In Digital Libraries, Steven Medina
Multimedia Content-Based Indexing And Recognition In Digital Libraries, Steven Medina
Dissertations and Theses
"Recognition of digital media is more prevalent in today’s computer culture than ever before. The advent of low cost storage has created a seemingly infinite amount of metadata on the internet, as well as on local machines throughout the world. It is more important than ever to have the capability of quickly and accurately filtering this metadata to find a desired result. Data can be searched using various criteria. For example, text data is searched by analyzing the contents of the text itself. One might execute a search using a method as simple as looking for the ASCII file name, …
Equilibrium Conditions Of Hydrate-Forming Pickering Emulsions, Radha Ambekar
Equilibrium Conditions Of Hydrate-Forming Pickering Emulsions, Radha Ambekar
Dissertations and Theses
A key factor in hydrate risk management for an oil-governing system is the stability of the emulsified water with gas hydrate formation. The kinetics of formation of cyclopentane hydrates is investigated in a water-in-oil emulsion using differential scanning calorimetry with the effect of surfactant Span 80. In a classical DSC experiment, an emulsion sample is subjected to a regular cooling and heating cycle between temperatures that include freezing and melting of the dispersed droplets. New phase equilibrium data of (cyclopentane hydrate + water 60:40) emulsions, in the concentration range from 0.1 to 2% of Span 80, is determined at atmospheric …
Parallel Trie-Based Frequent Itemset Mining On Graphics Processors, Jay Junjie Yao
Parallel Trie-Based Frequent Itemset Mining On Graphics Processors, Jay Junjie Yao
Dissertations and Theses
No abstract provided.
Chemotaxis Of Drosophila Glia With Controlled Microenvironments, Cade Beck
Chemotaxis Of Drosophila Glia With Controlled Microenvironments, Cade Beck
Dissertations and Theses
No abstract provided.
Study Of Air Bubble Injection Into Laminar And Turbulent Water Flow Through An Annular Test Section, Debbrata Das
Study Of Air Bubble Injection Into Laminar And Turbulent Water Flow Through An Annular Test Section, Debbrata Das
Dissertations and Theses
Injection of bubbles into a vertical upward flow of water in an annular flow channel was studied experimentally under laminar and turbulent conditions. In order to measure the size and shape of the bubbles, a flow visualization system was set up in a vertical test section with a high speed video camera. A PIV measurement technique was also used to determine laminar and turbulent velocity profiles in the liquid stream. In this study, an efficient image processing methodology was used to obtain the velocity profiles, bubble size, shapes and trajectory at different Reynolds numbers. The measured velocity profiles matched theoretical …
Developing A Comprehensive Software Toolkit For Creating Digital Mosaic Artwork, Dmitry Bosikov
Developing A Comprehensive Software Toolkit For Creating Digital Mosaic Artwork, Dmitry Bosikov
Dissertations and Theses
No abstract provided.
Rapid Decoding Of Digital Data Streams Using Field Programmable Gate Arrays, Andrew Hernandez
Rapid Decoding Of Digital Data Streams Using Field Programmable Gate Arrays, Andrew Hernandez
Dissertations and Theses
No abstract provided.
Context Awareness And Discovery For Helping The Blind, Martin Goldberg
Context Awareness And Discovery For Helping The Blind, Martin Goldberg
Dissertations and Theses
No abstract provided.
The Effects Of High Skilled Non-Immigrants (H-1b Visa Holders) On The Wages Of Natives, Onur Arslan
The Effects Of High Skilled Non-Immigrants (H-1b Visa Holders) On The Wages Of Natives, Onur Arslan
Dissertations and Theses
No abstract provided.
Feasibility Analysis Of Estrification Systems With Entrainers, Kang Wook Lee
Feasibility Analysis Of Estrification Systems With Entrainers, Kang Wook Lee
Dissertations and Theses
(Ethyl Acetate) and IPA (Isopropyl Acetate) production systems are studied in terms of the feasibility analysis. It is not feasible to retrieve pure products by a simple reactive distillation for IPA production system because CCR (Critical Composition Region) covers the entire desired binary edge for IPA system. On the other hand, even though CCR does not cover the entire desired binary edge of the EA system completely, internal reflux ratio (IRR) analysis does not allow the production of the pure product via reactive distillation for EA production system. To overcome the restraints, external entrainers are utilized to take advantage of …
Using A Virtual World For Robot Planning, D. Paul Benjamin, John V. Monaco, Yixia Lin, Christopher Funk, Damian M. Lyons
Using A Virtual World For Robot Planning, D. Paul Benjamin, John V. Monaco, Yixia Lin, Christopher Funk, Damian M. Lyons
CSIS Technical Reports
The architecture constructs a real-time virtual copy of the robot and its environment using PhysX, OpenCV, the Point Cloud Library, Soar, and Robot Schemas. A Match-Mediated Difference component compares actual sensory data with corresponding virtual-camera data and alerts the cognitive system to significant divergence. The virtual world can then be run faster than real time to search possible future trajectories for planning.