Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Engineering (40)
- Social and Behavioral Sciences (27)
- Physical Sciences and Mathematics (20)
- Education (19)
- Chemistry (16)
-
- Mechanical Engineering (16)
- Psychology (14)
- Arts and Humanities (12)
- Biomedical Engineering and Bioengineering (11)
- English Language and Literature (9)
- Electrical and Computer Engineering (8)
- Urban Studies and Planning (7)
- Communication (6)
- Biology (4)
- Business (4)
- Life Sciences (4)
- Civil and Environmental Engineering (3)
- Environmental Sciences (3)
- Medicine and Health Sciences (3)
- Computer Sciences (1)
- History (1)
- History of Art, Architecture, and Archaeology (1)
- Music (1)
- Keyword
-
- Electronic books. local (19)
- Depression (3)
- Academic achievement (2)
- Active disturbance rejection control (2)
- African American (2)
-
- Anxiety (2)
- Avoidance (Psychology) (2)
- Biomechanics (2)
- Blood coagulation factors (2)
- Cancer (2)
- Ceramic materials (2)
- Communication (2)
- Consumer behavior (2)
- Control theory (2)
- Critical theory (2)
- Cytology (2)
- DFT (2)
- Enzyme kinetics (2)
- Harmonic elimination (2)
- Harmonic functions (2)
- Hydrogenase (2)
- Internationalization (2)
- MEMS (2)
- Mass spectrometry (2)
- Microelectromechanical systems (2)
- Motivation (Psychology) (2)
- Online social networks (2)
- Orthopedic implants (2)
- Pain -- Treatment (2)
- Performance (2)
Articles 121 - 129 of 129
Full-Text Articles in Entire DC Network
Dspace Implementation Of A Generalized Method Of Harmonic Elimination For Pwm Boost Type Rectifier Under Unbalanced Operating Conditions, Ke Chen
ETD Archive
In this thesis, the implementation of a generalized method of harmonic elimination for the PWM boost type rectifier under severe fault conditions in the power system is presented. This method has been implemented by using DSPACE RT1104 digital control system. Control loop has been designed for real-time DC link voltage regulation. The simulation and experimental results verify the feasibility of the control scheme for input-output harmonic elimination. With the proposed method, unity power factor can be achieved as well as low-order harmonic elimination. High quality input and output waveforms of the three-phase PWM boost type rectifier are obtained under extremely …
Slurry Based Coatings On Silicon Based Ceramics, Sameer K. Khaja-Abdul
Slurry Based Coatings On Silicon Based Ceramics, Sameer K. Khaja-Abdul
ETD Archive
The use of advanced structural ceramics, such as Si3N4 (SN282), SiC, and SiC/SiC composites, is a promising technology to accomplish the high performance goals for advanced turbine applications. These materials exhibit excellent corrosion resistance by forming a dense silica scale. However, severe degradation of the silica scale has been observed due to the presence of certain environmental species, like alkali salts and water vapors, limiting the long-term reliability of structural ceramics. Presence of water vapor in the turbine environment leads to the formation of a gaseous silicon hydroxide species (Si(OH)4) via a reaction with silica layer, SiO2(s) + 2H2O(g) = …
Nonlinear State Estimation In Polymer Electrolyte Membrane Fuel Cells, Uma Tumuluri
Nonlinear State Estimation In Polymer Electrolyte Membrane Fuel Cells, Uma Tumuluri
ETD Archive
Research on alternative and renewable energy sources which are amicable to the environment has gained momentum because of the growing concern about the tremendous increase in the concentration of toxic and green house gases and scarcity of the fossil fuels. Among the available renewable sources, fuel cell technology has received a high research attention due to their high efficiency and superior reliability. Among the various fuel cells available, Polymer electrolyte membrane fuel cell is promising source for both stationary and mobile applications because of its high efficiency and low operating temperatures. The performance of the fuel cell depends on the …
A Novel Cascaded Multilevel Converter, Rajmohan Rangarajan
A Novel Cascaded Multilevel Converter, Rajmohan Rangarajan
ETD Archive
A novel cascaded multilevel converter is proposed in this thesis. The thesis proposes to produce more voltage levels from fewer H-bridges in a cascaded multilevel converter. The converter uses fewer H-bridges and the proposed switching scheme renders more voltage level in the staircase waveform with equal steps. Since the resulting voltage levels are equal, the angles are determined for the complete elimination of more unwanted harmonics. The implementation of the switching scheme, in single and three-phase configurations were simulated with Ansoft Simplorer♭ and the frequency spectrum of the resulting waveform and its total harmonic distortion are shown to verify the …
The Effect Of Wetland Size And Surrounding Land Use On Wetland Quality Along An Urbanization Gradient In The Rocky River Watershed, Marilyn S. Gunsch
The Effect Of Wetland Size And Surrounding Land Use On Wetland Quality Along An Urbanization Gradient In The Rocky River Watershed, Marilyn S. Gunsch
ETD Archive
An intensive floristic evaluation of 17 Cleveland Metroparks (CMP) wetlands in the Rocky River Watershed (RRW) was undertaken to determine whether wetland size or anthropogenic disturbance in the surrounding landscape is a better predictor of wetland quality in this protected parkland. Wetland study sites were selected in three reservations, Hinckley, Mill Stream Run, and Rocky River. My research adds valuable information to the CMP wetland database and will contribute to its wetland management policies. Wetland quality was determined using the following floristic indices: species richness, non-native species, wetland species, mean coefficient of conservatism (C of C), floristic quality assessment index …
Neural Correlates Of Déjà Vu And Dissociation: The Roles Of The Amygdala And Hippocampus In The Prevalence Of Deja Vu Used As An Indicator For The Severity Of Dissociation And Posttraumatic Stress Disorder, James R. Pontau
ETD Archive
The phenomenon of déjà vu is one that is poorly understood while posttraumatic stress disorder (PTSD) is a complex diagnosis and presentation of symptoms. Both of these presentations are influenced by amygdala and hippocampus regions of the brain. As such, this study demonstrated through correlational analyses that there are significant relationships between components of each that can be utilized to aid in determining the likely-hood of PTSD and dissociative symptoms. A unique negative relationship was also presented between deǰa vu and PTSD and dissociative assessment scores. Discussion of these relationships and future investigations are also discussed
A Diatom Phosphorus Inference Model For 30 Freshwater Lakes In Ne Ohio And Nw Pennsylvania, Kyle C. Scotese
A Diatom Phosphorus Inference Model For 30 Freshwater Lakes In Ne Ohio And Nw Pennsylvania, Kyle C. Scotese
ETD Archive
Nutrient enrichment in the form of anthropogenic phosphorous and nitrogen inputs has occurred in lakes worldwide. In the absence of historical water chemistry data, the extent to which this disturbance has impacted lakes in the Erie/Ontario drift and lake plain and Western Allegheny Plateau ecoregions remains to be determined. The objective of this study was to develop a diatom calibration set through analysis of surface sediments and water chemistry from 30 lakes spanning a phosphorous and nitrogen gradient in the glaciated regions of northeast Ohio and northwest Pennsylvania with an additional lake in New York. No current training set exists …
Byzantine Fault Tolerance For Nondeterministic Applications, Bo Chen
Byzantine Fault Tolerance For Nondeterministic Applications, Bo Chen
ETD Archive
The growing reliance on online services accessible on the Internet demands highly reliable system that would not be interrupted when encountering faults. A number of Byzantine fault tolerance (BFT) algorithms have been developed to mask the most complicated type of faults - Byzantine faults such as software bugs,operator mistakes, and malicious attacks, which are usually the major cause of service interruptions. However, it is often difficult to apply these algorithms to practical applications because such applications often exhibit sophisticated non-deterministic behaviors that the existing BFT algorithms could not cope with. In this thesis, we propose a classification of common types …
Study Of 3'-Untranslated Region Of Inducible Nitric Oxide Synthase And Identification Of Other Targets Of Gaitpathway, Sirisha Vadlamani
Study Of 3'-Untranslated Region Of Inducible Nitric Oxide Synthase And Identification Of Other Targets Of Gaitpathway, Sirisha Vadlamani
ETD Archive
Macrophages and other leukocytes play a vital role during inflammation. IFN-Îđ which is secreted by Th1 cells activates monocyte-macrophages and this activation leads to induction as well as suppression of certain genes expressed during inflammation. This suppression of genes may be potentially vital for resolution of inflammation. Upon IFN-Îđ stimulation, a Gamma-activated inhibitor of translation complex (GAIT) is formed, which binds to 3'-UTR of target mRNAs thereby silencing their translation. VEGF-A and ceruloplasmin are two proteins whose translation is suppressed by this pathway. The GAIT complex proteins have been identified as ribosomal protein L13a, glutamyl-prolyl tRNA synthatase (EPRS), NS-1 associated …