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Articles 1111 - 1140 of 20805
Full-Text Articles in Entire DC Network
Theism, The Postmodernist Burial Of Metaphysics, And Indian Mind-Body Dualism, Vladimir K. Shokhin
Theism, The Postmodernist Burial Of Metaphysics, And Indian Mind-Body Dualism, Vladimir K. Shokhin
Faith and Philosophy: Journal of the Society of Christian Philosophers
No abstract provided.
Application And Evaluation Of Spiral Separators For Fine Coal Cleaning, Zhuping Che
Application And Evaluation Of Spiral Separators For Fine Coal Cleaning, Zhuping Che
Graduate Theses, Dissertations, and Problem Reports (ETD)
Eight buckets of wet coal samples were collected from Shade Coal Preparation Plant, including the feed, clean coal, refuse, and middlings for fine spiral and coarse spiral, respectively. Float-sink analysis was performed on these size intervals using LMT (Lithium Metatungstate) liquids. Size distribution analysis is conducted for each size fraction of the above eight samples to evaluation the effectiveness of spiral separation. Wet sieving method was used for size distribution analysis.;From the tests, the following conclusion can be drawn: (1) The fine spiral is able to recovery 65.5% of the deslime hydrocyclone underflow as clean coal with an ash content …
Determination Of Mixed Hydrate Thermodynamics For Reservoir Modeling, Nagasree Garapati
Determination Of Mixed Hydrate Thermodynamics For Reservoir Modeling, Nagasree Garapati
Graduate Theses, Dissertations, and Problem Reports (ETD)
Natural gas hydrates are likely to contain more carbon than in all other fossil fuel reserves combined worldwide. Most of the natural gas hydrate deposits contain CH4 along with other hydrocarbon gases like C2H 6, C3H8 and non-hydrocarbon gases like CO 2 and H2S. Thus, if CH4 stored in natural gas hydrates can be recovered, the hydrates would potentially become a clean energy resource for the next 10,000 years. The production of CH4 from natural gas hydrate reservoirs has been predicted by reservoir simulators that implement phase equilibria data to predict various production scenarios. Therefore, it is very important to …
Computational Environment For The Development Of An Faa Compliant Level 6 Flight Training Device, Steven Mullins
Computational Environment For The Development Of An Faa Compliant Level 6 Flight Training Device, Steven Mullins
Graduate Theses, Dissertations, and Problem Reports (ETD)
A flight simulator can successfully achieve its purpose only if equipped with adequate mathematical models of the aircraft, its sub-systems, and the environment. The US Federal Aviation Administration (FAA) has instituted stringent regulations to ensure that flight simulators used for pilot training reach desirable levels of accuracy and fidelity. The purpose of this thesis is to present the development and application of a design strategy and the computational environment associated to it for building an aircraft simulation model that meets the FAA regulations for flight simulator performance. The proposed methodology is based on using flight test data in combination with …
Aerodynamic Design Of A Tilting Wind Tunnel For The Study Of A Glider In Ground Effect, Andres Felipe Velasquez E.
Aerodynamic Design Of A Tilting Wind Tunnel For The Study Of A Glider In Ground Effect, Andres Felipe Velasquez E.
Graduate Theses, Dissertations, and Problem Reports (ETD)
A small, low-speed, open return, tilting wind tunnel has been designed. This wind tunnel is intended to simulate the behavior of an unpowered recreational glider that flies down slopes in ground effect at about 1m above the surface. The required tilting angle is 50°. The wind tunnel has to be capable of holding free-flying models with a recommended scaling factor of 14.2 and with Froude number matching.;The designed wind tunnel uses a centrifugal fan to blow air into the test section through a wide angle diffuser, a settling chamber and a contraction. There are six screens and a honeycomb to …
Mining And Residential Development Interact To Produce Highly Impaired Stream Conditions In An Intensively Mined Appalachian Watershed, Eric Richard Merriam
Mining And Residential Development Interact To Produce Highly Impaired Stream Conditions In An Intensively Mined Appalachian Watershed, Eric Richard Merriam
Graduate Theses, Dissertations, and Problem Reports (ETD)
Large scale surface mining in southern West Virginia causes significant alteration of headwater stream networks. It is unclear, however, the extent to which mining interacts with other stressors to determine physical, chemical, and biological conditions in aquatic systems downstream. Through a watershed scale assessment of Pigeon Creek, the specific objectives of this study were to: (1) quantify the direct and interactive effects of mining and residential development on in-stream conditions; and (2) identify landscape thresholds above which biological impairment occurs. Our results indicate high levels of impairment to habitat, water quality, and benthic invertebrate communities within this watershed. Statistical analyses …
Transcript Analysis Of The Cso Operon And Characterization Of Two Sets Of Conserved Bacterial Microcompartment Genes In The Model Organism Halothiobacillus Neapolitanus, Fei Cai
Dissertations
This study was designed to achieve better understanding of (1) how carboxysome genes are regulated and expressed to yield with precise relative ratios and (2) the in vivo roles of two sets of conserved bacterial microcompartment genes, namely the three csoSl and two csoS4 genes of H. neapolitanus, in the biogenesis and function of the carboxysome. For the first goal, a detailed transcriptional profile of carboxysomal genes in H. neapolitanus was established using absolute quantification real-time RT-PCR and transcript ends analysis. This transcriptional profile revealed that a single promoter, denoted cso promoter, was located upstream from the clustered carboxysomal genes. …
In Quest Of Walter Smith: The Past, Present, And Future Impact Of Visual Art In Adult Education, Meredith Amanda Cole
In Quest Of Walter Smith: The Past, Present, And Future Impact Of Visual Art In Adult Education, Meredith Amanda Cole
Dissertations
Walter Smith is a relatively unknown historical figure in the art world, but he is essential to defining adult education's past, present, and future in the area of visual art. His artistic endeavors in America sparked facets of the way art education is practiced today. However, along the way we have lost the tenets of social change which he sought but never accomplished. In chapter one, I introduce the purpose of the research. In chapter two, I explain the position Walter Smith entered when coming to America. I also detail Smith's Herculean social reform efforts for adult education and why …
Entropy And Certainty In Lossless Data Compression, James Jay Jacobs
Entropy And Certainty In Lossless Data Compression, James Jay Jacobs
Dissertations
Data compression is the art of using encoding techniques to represent data symbols using less storage space compared to the original data representation. The encoding process builds a relationship between the entropy of the data and the certainty of the system. The theoretical limits of this relationship are defined by the theory of entropy in information that was proposed by Claude Shannon. Lossless data compression is uniquely tied to entropy theory as the data and the system have a static definition. The static nature of the two requires a mechanism to reduce the entropy without the ability to alter either …
Tuning Pig Liver Esterase Enantioselectivity For The Synthesis Of Unnatural Serine And Tyrosine Analogues, Dale Anthony Rosado Jr.
Tuning Pig Liver Esterase Enantioselectivity For The Synthesis Of Unnatural Serine And Tyrosine Analogues, Dale Anthony Rosado Jr.
Dissertations
The synthesis of disubstituted and homologated unnatural amino acids and the development of a mass spectrometry based assay for enantioselectivity are presented here. Disubstituted and homologated unnatural amino acids have proven to be effective for the treatment of diseases and for use as imaging agents. Peptides that contain unnatural amino acids have also proven to be effective treatments for various disease states including cancer. The potential to evaluate such unnatural amino acids for pharmaceutical properties is limited by the available syntheses. No method currently exists that will allow for the synthesis of homochirally similar unnatural amino acids from a common …
Teaching Science In Light Of World View: The Effect Of Contextualized Instruction On The Scientific Compatibility Of Religious College Students' World Views, Paula Rae Gossard
Teaching Science In Light Of World View: The Effect Of Contextualized Instruction On The Scientific Compatibility Of Religious College Students' World Views, Paula Rae Gossard
Dissertations
Authors of recent science reform documents promote the goal of scientific literacy for all Americans (American Association for the Advancement of Science, 1989, 1993). Some students, however, feel apprehensive about learning science due to perceptions that science is antagonistic to their world views (Alters, 2005; Esbenshade, 1993). This study investigated the effect of an introductory science course taught in the context of a Christian, theistic world view on the scientific compatibility of religious college students' world views. For the purposes of this study, students' understanding of the nature of science, affective attitudes toward science, and beliefs regarding creation were used …
Internal Valve Design And Response Analysis For A Circulation Control Augmented Vertical Axis Wind Turbine, Andrew J. Nawrocki
Internal Valve Design And Response Analysis For A Circulation Control Augmented Vertical Axis Wind Turbine, Andrew J. Nawrocki
Graduate Theses, Dissertations, and Problem Reports (ETD)
Circulation control is an established method for increasing lift on an airfoil-shaped body. Previous research has focused on the application of circulation control to fixed-wing aircraft as well as rotorcraft; ongoing research at the Center for Industrial Research Applications (CIRA) involves the application of circulation control to vertical-axis wind turbines (VAWT). Due to size and response time constraints, one of the key technical hurdles of this application that must be overcome is the valve mechanism for controlling the airflow out of the blowing slots. A valve design consisting of a slotted, sliding gate mated to a slotted, fixed surface within …
Weak Floor Stability In The Illinois Basin Underground Coal Mines, Murali M. Gadde
Weak Floor Stability In The Illinois Basin Underground Coal Mines, Murali M. Gadde
Graduate Theses, Dissertations, and Problem Reports (ETD)
The research described in this dissertation is a direct consequence of the author's quest to find solutions to several problems he faced while designing optimum pillar layouts for some Illinois Basin coal mines over weak immediate floor strata. When using the existing methods of floor stability analysis, conclusions were sometimes drawn that were either not supported by real-world mining experience or in some cases even physically impossible results were obtained. Therefore, it was necessary to delve deeper into the existing methods and understand their limitations to arrive at alternatives that were consistent with practical observations. In improving upon the existing …
Text Format, Text Comprehension, And Related Reader Variables, Jodi L. Nichols
Text Format, Text Comprehension, And Related Reader Variables, Jodi L. Nichols
Graduate Theses, Dissertations, and Problem Reports (ETD)
This investigation explored relationships between format of text (electronic or print-based) and reading comprehension of adolescent readers. Also in question were potential influences on comprehension from related measures including academic placement of participants, gender, prior knowledge of the content, and overall reading ability. Influences were measured through an unaided text retell and a constructed-response assessment with traditional questioning. Participants' reading preferences and self-reported reading behaviors were also explored.;Findings from regression analyses revealed that format of the text was not a significant predictor of reading comprehension for seventh grade students, despite participants' self-reported preference to reading electronic text. Conversely, participants' academic …
Improvement Of The Mine Fire Simulation Program Mfire, Lihong Zhou
Improvement Of The Mine Fire Simulation Program Mfire, Lihong Zhou
Graduate Theses, Dissertations, and Problem Reports (ETD)
Fire represents one of the most severe hazards to underground mines. A good understanding of the interaction between a mine fire and the mine ventilation network would be very crucial for fire emergency planning and hazard control. MFIRE, an underground mine fire simulation program developed in 1980's, is a tool that can be used to simulate the impacts of a mine fire event to a mine ventilation network. However, the lack of the abilities to simulate some of the important mine fire phenomena realistically hindered its wide applications. This research has been carried out to improve the MFIRE program. The …
Reflective Optics Cpv Panels Enabling Large Scale, Reliable Generation Of Solar Energy Cost Competitive With Fossil Fuels, S. Horne, M. Mcdonald, N. Hartsoch, K. Desy
Reflective Optics Cpv Panels Enabling Large Scale, Reliable Generation Of Solar Energy Cost Competitive With Fossil Fuels, S. Horne, M. Mcdonald, N. Hartsoch, K. Desy
Publications (E)
The objective of this 18 month subcontract was the improvement of reflective optics CPV panels to enable the large-scale, reliable production of solar electricity to meet SAI-established LCOE targets, and ultimately provide a path to solar power at parity with or better than the cost of energy generated utilizing fossil fuels. To this end, SolFocus has completed this subcontract with great success as evidenced by the end results of a CPV panel with conversion efficiencies greater than the targeted 22% and manufacturing capabilities with a run rate capacity far exceeding the milestone benchmark >3MW.
Microstructural Transformations And Kinetics Of High-Temperature Heterogeneous Gasless Reactions By High-Speed X-Ray Phase-Contrast Imaging, Robert V. Reeves, Jeremiah D.E. White, Eric M. Dufresne, Kamel Fezzaa, Steven F. Son, Arvind Varma, Alexander S. Mukasyan
Microstructural Transformations And Kinetics Of High-Temperature Heterogeneous Gasless Reactions By High-Speed X-Ray Phase-Contrast Imaging, Robert V. Reeves, Jeremiah D.E. White, Eric M. Dufresne, Kamel Fezzaa, Steven F. Son, Arvind Varma, Alexander S. Mukasyan
Purdue Energetics Research Center Articles
Heterogeneous gasless reactive systems, including high-energy density metal-nonmetal compositions, have seen increasing study due to their various applications. However, owing to their high reaction temperature, short reaction time, and small scale of heterogeneity, investigation of their reaction mechanisms and kinetics is very difficult. In this study, microstructural changes and the kinetics of product layer growth in the W-Si system was investigated using a high-speed x-ray phase-contrast imaging technique. Using the Advanced Photon Source of Argonne National Laboratory, this method allowed direct imaging of irreversible reactions in the W-Si reactive system at frame rates up to 36 000 frames per second …
2009 Indiana County Highway Department Wage And Salary Survey, Indiana Ltap
2009 Indiana County Highway Department Wage And Salary Survey, Indiana Ltap
Indiana Local Technical Assistance Program (LTAP) Publications
Included in this publication are wage and salary figures for the major salaried and hourly county highway positions in Indiana. In addition, the numbers of employees working under each job title are tabulated, and the ratio of total number of employees per mile of county road is displayed. The following series of tables are divided into four categories: administration, maintenance and repair, general and undistributed, and cumulative bridge. The appendix presents the recommended methods for calculating the labor burden for both salaried and hourly employees. Also included are generalized worksheets, which may be copied and used to calculate labor burden …
A Parallel Direct Solver For The Simulation Of Large-Scale Power/Ground Networks, Stephen Cauley, Venkataramanan Balakrishnan, Cheng-Kok Koh
A Parallel Direct Solver For The Simulation Of Large-Scale Power/Ground Networks, Stephen Cauley, Venkataramanan Balakrishnan, Cheng-Kok Koh
Department of Electrical and Computer Engineering Technical Reports
We present an algorithm for the fast and accurate simulation of power/ground mesh structures. Our method is a direct (non-iterative) approach for simulation based upon a parallel matrix inversion algorithm. Through the use of additional computational resources, this distributed computing technique facilitates the simulation of large-scale power/ground networks. In addition, the new dimension of flexibility provided by our algorithm allows for a more accurate analysis of power/ground mesh structures using RLC interconnect models. Specifically, we offer a method that employs a sparse approximate inverse technique to consider more reluctance coupling terms for increased accuracy of simulation. The inclusion of additional …
Camouflaging Timing Channels In Web Traffic, Sarah H. Sellke, Chih-Chun Wang, Saurabh Bagchi, Ness B. Shroff
Camouflaging Timing Channels In Web Traffic, Sarah H. Sellke, Chih-Chun Wang, Saurabh Bagchi, Ness B. Shroff
Department of Electrical and Computer Engineering Technical Reports
Web traffic accounts for more than half of Internet traffic today. Camouflaging covert timing channels in Web traffic would be advantageous for concealment. In this paper, we investigate the possibility of disguising network covert timing channels as HTTP traffic to avoid detection. Extensive research has shown that Internet traffic, including HTTP traffic, exhibits self-similarity and long range persistence. Existing covert timing channels that mimic i.i.d. legitimate traffic cannot imitate HTTP traffic because these covert traffic patterns are not long range dependent. The goal of this work is to design a covert timing channel that can be camouflaged as HTTP traffic. …
Ccack: Efficient Network Coding Based Opportunistic Routing Through Cumulative Coded Acknowledgments, Dimitrios Koutsonikolas, Chih-Chun Wang, Y. Charlie Hu
Ccack: Efficient Network Coding Based Opportunistic Routing Through Cumulative Coded Acknowledgments, Dimitrios Koutsonikolas, Chih-Chun Wang, Y. Charlie Hu
Department of Electrical and Computer Engineering Technical Reports
The use of random linear network coding (NC) has significantly simplified the design of opportunistic routing (OR) protocols by removing the need of coordination among forwarding nodes for avoiding duplicate transmissions. However, NC-based OR protocols face a new challenge: How many coded packets should each forwarder transmit? To avoid the overhead of feedback exchange, most practical existing NC-based OR protocols compute offline the expected number of transmissions for each forwarder using heuristics based on periodic measurements of the average link loss rates and the ETX metric. Although attractive due to their minimal coordination overhead, these approaches may suffer significant performance …
A Proposal For Transcending Barriers Of Intercultural Communication In Global Business: An Instructional Innovation, Henrietta Yang
A Proposal For Transcending Barriers Of Intercultural Communication In Global Business: An Instructional Innovation, Henrietta Yang
Global Business Languages
No abstract provided.
Borders And Frontiers In The Information Age, Jessica Lichy
Borders And Frontiers In The Information Age, Jessica Lichy
Global Business Languages
No abstract provided.
At Brunning: People & Technology, Dennis Brunning
At Brunning: People & Technology, Dennis Brunning
Against the Grain
No abstract provided.
Best Practices For Information Services, Sara Davis
Best Practices For Information Services, Sara Davis
Sci-Tech News
No abstract provided.
Engineering Division News, Dianna Magnoni
Science-Technology Division News
Beyond The Chemistry Web, Bob Buchanan
Sci-Tech Book News Reviews, Susan Fingerman