118462



    ABSTRACTS VIEWS

    1733



    VIEWS & DOWNLOAD

    Browsing by Title

    Jump to: 0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
    or enter first few letters:  
    Showing results [330 - 349] / 1659
    • 16.EBOOK UPDATE AND OUTLOOK.pdf.jpg
    • Article


    • Authors: Kaser, Dick (2010-12)

    • The author, Vice President of Content at Information Today, Inc., acknowledges that ebooks have become an increasingly important element in a library. He discusses libraries‟ digital collection strategies and challenges of ebooks and mobile reading devices adoption on library workflows

    • 3247690.PDF.jpg
    • Thesis


    • Authors: Williamson, Kurt Elliott (2006)

    • The importance of viruses in aquatic ecosystems has been established over the past decade. By contrast, the abundance and distribution of viruses in soils is almost completely unknown. An essential first step in any investigation of viruses in soil is evaluation of viral recovery methods suitable for subsequent cultivation-independent analyses. A comparison of four common elution buffers indicated that potassium citrate eluted the highest numbers of viruses from soils (1.5 X 108 gram dry weight-1 grand mean), but specific soil-eluant combinations posed significant problems to enumeration by epifluorescence microscopy. Thus, the measurement of phage abundance in soils varied with both ...

    • thvnu400000278.pdf.jpg
    • Thesis


    • Authors: Trần, Bảo Quốc. (2016)

    • The Ca river basin is the third biggest river basin in Vietnam, in which the upper part belongs to Laos. With the World Biosphere Reserve Western Nghe An officially recognized by UNESCO in 2007, the up-to-date information about ecosystem and biodiversity, in particular, flora biodiversity is urgently needed for conservation strategies as well as policy making process in resource management. This study aims to evaluate Skidmore et al. (2015)’s proposed variables to assess the ecosystem health in the Ca river basin from remote sensing indices, namely leaf area index, soil moisture, net primary production, land use and fire occurrence with the hypothesis that this framework is generic fo...

    • 3243741.PDF.jpg
    • Thesis


    • Authors: Shoaf, Kari (2006)

    • Antiadhesion therapy has been found to be a very promising means to prevent and treat infections in the respiratory, urinary, and gastrointestinal tract. Despite the considerable research interest in antiadhesives, relatively little is known about the ability of commercial dietary oligosaccharides, such as prebiotics, to inhibit pathogen adherence. The goal of this research was to determine if commercially available prebiotic oligosaccharides could function as antiadhesive agents against enteropathogenic E. coli (EPEC). To investigate the ability of prebiotics to inhibit EPEC adherence, inhibition assays were performed by comparing adherence rates of EPEC on HEp-2 and Caco-2 cells in...

    • 3239195.PDF.jpg
    • Thesis


    • Authors: Singh, Swaroop Swaran (2006)

    • This present study deals with designing a real-time remote handheld ECG monitoring system and evaluating its potential usefulness in early detection of heart conduction problems. The raw ECG recordings were sent by the handheld monitor (client) to a remote server, which performed an on-line ECG analysis and sent the results back to the client. Real-time feedback provided to the client included display of ECG, results of ECG analysis and alarms (if required). The objective of this work was to determine its effectiveness in real-time identification of particular pattern preceding ventricular fibrillation. The remote server identified the occurrence of QRS complex and premature ventri...

    • 3206206.PDF.jpg
    • Thesis


    • Authors: Peyronnet, Arnaud J (2006)

    • This dissertation investigates the role of climate and ocean conditions on the marine survival of Atlantic salmon. The overall objective was to identify the relevant environmental variables controlling salmon marine survival, in order to establish predictive models of marine recruitment. These models are required to improve the management process of the Irish and European salmon resources. I first explored the levels of synchrony in the marine survival of European salmon, in order to assemble evidence on the spatial scale of the processes controlling survival. I demonstrate that these levels of synchrony are low and I conclude that large scale events are not directly exerting a contr...

    • 23..EFFECT OF INTERACTIONS AMONG .pdf.jpg
    • Article


    • Authors: Yamamura, Eiji (2009-07)

    • This paper explores how and the extent to which social capital has as effect on the damage resulting from natural disasters. It also examines whether the experience of a natural disaster individual and collective protection againts future disasters. There are three major finding. (1) Social capital reduces the damage caused by natural disasters. (2) The risk of a natural disasters. (3) Income is an important factor for reducing damage, but hardly influences it when the scale of a disaster is small

    • thvnu400000081.pdf.jpg
    • Thesis


    • Authors: Nguyễn, Lê Duy Khải. (2009)

    • The effects of split injection, oxygen enriched air, and heavy exhaust gas recirculation (EGR) on soot emissions in a direct injection diesel engine are studied using the KIVA-3V code. When split injection is applied, a dwell time between two injections causes the decrease in local temperature and the fuel-rich area in the flame, which leads to the significantly decrease in precursor formation. Thus, the soot formation in split injection is decreased compared to single injection. The second injection of fuel into a cylinder results in two separate stoichiometric zones which help increase soot oxidation. As a result of soot formation decrease and soot oxidation increase, the soot ...

    • 3223620.PDF.jpg
    • Thesis


    • Authors: Jang, Myeong-Wuk (2006)

    • The growth of the computational power of computers and the speed of networks has made large-scale multi-agent systems a promising technology. As the number of agents in a single application approaches thousands or millions, distributed computing has become a general paradigm in large-scale multi-agent systems to take the benefits of parallel computing. However, since these numerous agents are located on distributed computers and interact intensively with each other to achieve common goals, the agent communication cost significantly affects the performance of applications. Therefore, optimizing the agent communication cost on distributed systems could considerably reduce the runtime of...

    • 3242708.PDF.jpg
    • Thesis


    • Authors: Ritchey, Ronald W. (2006)

    • Attack graphs are often used by penetration testing teams to represent the individual steps an attacker could use to compromise a network. The graphs built manually by these teams though are often incomplete and require substantial effort to create. Because of this, automated network attack graph generation is an area that has enjoyed significant research over the last several years. This dissertation further develops the body of knowledge in automated network attack graphs specifically focused on proving its usefulness to protecting real networks. I show that attack graph construction and analysis can be automated while maintaining characteristics of real networks, that attack graphs...

    • 3186484.PDF.jpg
    • Thesis


    • Authors: Agarwal, Sachin Kumar (2006)

    • The unifying theme of this work is to provide new scalable solutions comprising algorithms, protocols, and data-structures, for solving data synchronization and set difference estimation problems. These problems are are repeatedly encountered in distributed systems and solving them efficiently directly affects the scalability of the distributed system, i.e., how many network hosts can participate in the distributed system. Our new solutions, if deployed, can significantly reduce communication, computational overhead, and meta-data stored on hosts as compared to currently used approaches for data synchronization and set difference estimation. Modern distributed network applications of...

    • 3236029.PDF.jpg
    • Thesis


    • Authors: Li, Zhihua (2006)

    • This research was focused on the development of electrical techniques for soil characterization and soil dynamic behavior assessment. The research carried out mainly includes (1) development of a needle probe tool for assessment of soil spatial variability in terms of porosity with high-resolution in the centrifuge testing; (2) development of an electro-location technique to accurately locate buried objects' movements inside the soil during dynamic events, e.g. earthquakes; (3) collaborative development of a new electrode switching system (ESS) to implement electrical resistivity tomography (ERT), and electro-location with high speed and high resolution. To assess the soil spatial va...

    • 3226603.PDF.jpg
    • Thesis


    • Authors: Jia, Weiwei (2006)

    • Electro-osmotic grouting is a new foundation improvement technique proposed to treat low permeability, liquefiable silty soils underneath existing structures for the purpose of liquefaction-mitigation. This technique uses a d.c. current to introduce water soluble grout materials and reactants into the silty soils. Setting time of injected grouts can be controlled by adjusting the concentration and sequence of introduction of various components. Both experimental and numerical studies were performed in this research. Experiments were conducted to prove the feasibility of electro-osmotic injection under 1-D and 3-D conditions, to quantify the increase of liquefaction resistance in silt...

    • 3220993.PDF.jpg
    • Thesis


    • Authors: Matter, Paul H (2006)

    • In the field of catalysis, the development of alternative catalysts for the oxygen reduction reaction (ORR) in Polymer Electrolyte Membrane Fuel Cell (PEMFC) cathodes has been an ongoing task for researchers over the past two decades. PEM fuel cells are considered to be potential replacements for internal combustion engines in automobiles, and their reduced emissions and better efficiency would have huge payoffs for our environment, and in reducing our nation's dependence on foreign oil. To date, PEMFC cathode over-potentials are still significant, and the only materials discovered to be highly active and stable catalysts in an acidic environment are platinum-based. Despite several ma...

    • 3236590.PDF.jpg
    • Thesis


    • Authors: Baymak, Melek Sirin (2006)

    • The aim of this Thesis was an understanding of the electrochemical behavior of various carbonyl compounds as well as investigation of reaction mechanisms of some chemical reactions of these carbonyl compounds. This was achieved by using polarography as an electroanalytical tool. The goal of this Thesis is to contribute to the research dealing with basic organic electrochemistry and to show that polarography can still assist in solving of complex scientific problems. Hence, the electrochemical behavior of benzaldehyde, three isomeric phthalaldehydes and some aryl hydrazones have been studied by using polarography. UV spectroscopy was sometimes used to support electrochemical results. ...

    • 3200729.PDF.jpg
    • Thesis


    • Authors: Choi, James Choong-Kwan (2006)

    • This dissertation is a summary of work done in the study of Drosophila neurophysiology. This endeavor primarily involves direct observation of channel activity using electrophysiological techniques. In third instar larvae, a live preparation was devised to characterize motorneurons in situ. By recording from ion channels in their natural milieu, a comprehensive, functional account of five individually identified mo¬torneurons (MN6/7-Ib, MN1-Ib, MN14-Ib, MN 30-Ib and MNISN-Is) was obtained using electrophysiology in combination with labeling, pharmacology and biophysical methods. A fast-inactivating, voltage-sensitive potassium channel (Shal) was shown to mediate the delayed spiking re...

    • 3238927.PDF.jpg
    • Thesis


    • Authors: Harden, John Michael (2006)

    • Many soil and aquifer systems in the United States have been subjected to chemical contamination from past industrial and military activities. While many remediation technologies are currently being applied, in situ chemical oxidation (ISCO) is one option that is often favored because of its potential for fast remediation times and high user control. This technology involves the direct injection of chemical oxidizers (e.g. hydrogen peroxide, ozone, or permanganate) into targeted contaminant zones within the subsurface, and it has been proven to be amenable to both BTEX compounds and other volatile organic compounds such as chlorinated solvents. This study had several key objectives...

    • 23.AN EMERGING GLOBAL MARKET.pdf.jpg
    • Article


    • Authors: Sassen, Saskia (2011)

    • The author discusses structural trends, consequences and the challenges facing the global labor market. She examines the changing patterns of outsourcing foreign skilled workers and professionals in relation to its effectiveness in improving market economies. The author also draws conclusions from the growing segmentation in the labor market in terms of competition for foreign talent. A table which shows the major industrial sectors that hire foreign workers in leading developed countries is presented.

    • 3197488.PDF.jpg
    • Thesis


    • Authors: Nudelman, Eugene (2005)

    • Traditionally, computer scientists have considered computational problems and al¬gorithms as artificial formal objects that can be studied theoretically. In this work we propose a different view of algorithms as natural phenomena that can be studied using empirical methods. In the first part, we propose a methodology for using ma-chine learning techniques to create accurate statistical models of running times of a given algorithm on particular problem instances. Rather than focus on the traditional aggregate notions of hardness, such as worst-case or average-case complexity, these models provide a much more comprehensive picture of algorithms' performance. We demonstrate that such mod...

    • 3197493.PDF.jpg
    • Thesis


    • Authors: Park, Woo-Tae (2005)

    • Micromachined accelerometers have been introduced in the late 1970s and have been used in various applications. The applications range from inertial navigation and data logging in wells to body activity monitoring for pacemakers. Although the size of the accelerometers was sufficient for their applications, there were not many efforts in pushing the limits of accelerometer miniaturization. In this study, we utilized film deposition packaging technology and other modern microfabrication techniques to miniaturize the size and mass of the packaged accelerometers, two orders of magnitude smaller than any accelerometers ever reported. We used these ultra miniature accelerometers to offer s...