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Articles 3091 - 3120 of 3435
Full-Text Articles in Physical Sciences and Mathematics
On-Road Remote Sensing Of Automobile Emissions In The Denver Area: Year 3, Sajal S. Pokharel, Gary A. Bishop, Donald H. Stedman
On-Road Remote Sensing Of Automobile Emissions In The Denver Area: Year 3, Sajal S. Pokharel, Gary A. Bishop, Donald H. Stedman
Fuel Efficiency Automobile Test Publications
No abstract provided.
On-Road Remote Sensing Of Automobile Emissions In The Los Angeles Area: Year 3 (Riverside), Sajal S. Pokharel, Gary A. Bishop, Donald H. Stedman
On-Road Remote Sensing Of Automobile Emissions In The Los Angeles Area: Year 3 (Riverside), Sajal S. Pokharel, Gary A. Bishop, Donald H. Stedman
Fuel Efficiency Automobile Test Publications
No abstract provided.
Application Of Extensive Markup Language (Xml) For Shipping Companies, Bala Vithoba Meshram
Application Of Extensive Markup Language (Xml) For Shipping Companies, Bala Vithoba Meshram
World Maritime University Dissertations
No abstract provided.
Electronic Structure And Bonding In Metal Porphyrins, Metal=Fe, Co, Ni, Cu, Zn, M.-S. Liao, Steve Scheiner
Electronic Structure And Bonding In Metal Porphyrins, Metal=Fe, Co, Ni, Cu, Zn, M.-S. Liao, Steve Scheiner
Chemistry and Biochemistry Faculty Publications
A systematic theoretical study of the electronic structure and bonding in metal meso-tetraphenyl porphines MTPP, M=Fe, Co, Ni, Cu, Zn has been carried out using a density functional theory method. The calculations provide a clear elucidation of the ground states for the MTPPs and for a series of [MTPP]x ions (x = 2+, 1+, 1−, 2−, 3−, 4−), which aids in understanding a number of observed electronic properties. The calculation supports the experimental assignment of unligated FeTPP as 3A2g, which arises from the configuration (dxy)2(dz …
Electronic Structure And Bonding In Unligated And Ligated Feii Porphyrins, M.-S. Liao, Steve Scheiner
Electronic Structure And Bonding In Unligated And Ligated Feii Porphyrins, M.-S. Liao, Steve Scheiner
Chemistry and Biochemistry Faculty Publications
The electronic structure and bonding in a series of unligated and ligated FeII porphyrins (FeP) are investigated by density functional theory (DFT). All the unligated four-coordinate iron porphyrins have a 3A2g ground state that arises from the (dxy)2(dz2)2(dπ)2 configuration. The calculations confirm experimental results on Fe tetraphenylporphine but do not support the resonance Raman assignment of Fe octaethylporphine as 3Eg, nor the early assignment of Fe octamethyltetrabenzporphine as 5B2g. For the six-coordinate Fe–P( …
Environmental Assessment : Middle Salt Creek Canyon Access Plan Canyonlands National Park, Utah, National Park Service, U.S. Department Of The Interior, Canyonlands National Park
Environmental Assessment : Middle Salt Creek Canyon Access Plan Canyonlands National Park, Utah, National Park Service, U.S. Department Of The Interior, Canyonlands National Park
Canyonlands Research Bibliography
Salt Creek is the largest drainage in the Needles district of Canyonlands National Park. The creek supports one of the most important riparian ecosystems in the park. It is also the heart of the Salt Creek National Register Archeological District, the area with the highest recorded density of archeological sites in the park. A tributary canyon contains the spectacular Angel Arch, a well-known geologic formation that for many years has been a destination point for park visitors. In 1998 the U.S. District Court for the State of Utah ruled, in a lawsuit filed by the Southern Utah Wilderness Alliance, that …
Biological Soil Crusts : Webs Of Life In The Desert, Jayne Belnap
Biological Soil Crusts : Webs Of Life In The Desert, Jayne Belnap
Canyonlands Research Bibliography
No abstract provided.
Temporal Variation In Community Composition, Pigmentation, And Fv/Fm Of Desert Cyanobacterial Soil Crusts, M. A. Bowker, S. C. Reed, J. Belnap, S. L. Phillips
Temporal Variation In Community Composition, Pigmentation, And Fv/Fm Of Desert Cyanobacterial Soil Crusts, M. A. Bowker, S. C. Reed, J. Belnap, S. L. Phillips
Canyonlands Research Bibliography
Summers on the Colorado Plateau (USA) are typified by harsh conditions such as high temperatures, brief soil hydration periods, and high UV and visible radiation. We investigated whether community composition, physiological status, and pigmentation might vary in biological soil crusts as a result of such conditions. Representative surface cores were sampled at the ENE, WSW, and top microaspects of 20 individual soil crust pedicels at a single site in Canyonlands National Park, Utah, in spring and fall of 1999. Frequency of cyanobacterial taxa, pigment concentrations, and dark adapted quantum yield (Fv/Fm) were measured for each core. The frequency of major …
Safeguarding Species, Languages, And Cultures In The Time Of Diversity Loss: From The Colorado Plateau To Global Hotspots, Gary Paul Nabhan, Patrick Pynes, Tony Joe
Safeguarding Species, Languages, And Cultures In The Time Of Diversity Loss: From The Colorado Plateau To Global Hotspots, Gary Paul Nabhan, Patrick Pynes, Tony Joe
Canyonlands Research Bibliography
Hotspots of biodiversity have become priority areas for land conservation initiatives, oftentimes without recognition that these areas are hotspots of cultural diversity as well. Using the Colorado Plateau ecoregion as a case study, this inquiry (1) outlines the broad geographic patterns of biological diversity and ethnolinguistic diversity within this ecoregion; (2) discusses why these two kinds of diversity are often influenced by the same geographic and historic factors; and (3) suggests what can be done to integrate traditional ecological knowledge of indigenous peoples into multicultural conservation collaborations.
Radiation Resistance Testing Of Mosfet And Cmos As A Means Of Risk Management, Akira Tokuhiro, Massimo F. Bertino
Radiation Resistance Testing Of Mosfet And Cmos As A Means Of Risk Management, Akira Tokuhiro, Massimo F. Bertino
Nuclear Engineering and Radiation Science Faculty Research & Creative Works
Whether for military, research (space, accelerator physics) and/or civilian use, risk avoidance against radiation-induced damage is not possible with COTS parts. Thus the sensible approach is risk management. We recommend a sensible risk management approach as follows: 1) know the radiation environment of the intended application to the extent possible; 2) know the effects of ionizing radiation on the component(s) of interest; 3) know the requirements of the application; 4) identify the candidate or chosen components; 5) test the components; 6) design-in safety factor margins to the extent possible.
Understanding The Role Of Macroalgae In Shallow Estuaries, Maryland Department Of Natural Resources
Understanding The Role Of Macroalgae In Shallow Estuaries, Maryland Department Of Natural Resources
Reports
No abstract provided.
Intrinsic Knotting And Linking Of Complete Graphs, Erica Flapan
Intrinsic Knotting And Linking Of Complete Graphs, Erica Flapan
Pomona Faculty Publications and Research
We show that for every m∈N, there exists an n∈N such that every embedding of the complete graph Kn in R3 contains a link of two components whose linking number is at least m. Furthermore, there exists an r∈N such that every embedding of Kr in R3 contains a knot Q with |a2(Q)| ≥ m, where a2(Q) denotes the second coefficient of the Conway polynomial of Q.
Macrohabitat Composition Surrounding Successful And Depredated Northern Bobwhite Nests, Eric L. Staller, William E. Palmer, John P. Carroll
Macrohabitat Composition Surrounding Successful And Depredated Northern Bobwhite Nests, Eric L. Staller, William E. Palmer, John P. Carroll
School of Natural Resources: Faculty Publications
Relationships among macrohabitat and depredation of northern bobwhite (Colinus virginianus) nests are poorly understood. Yet, macrohabitat composition may influence the nest predator community and, therefore, the vulnerability of northern bobwhite nests to depredation. We determined if macrohabitat composition surrounding bobwhite nests influenced nest placement, nest success, and which predators were responsible for depredating nests. We characterized macrohabitats at 2 scales, 8 and 16 ha, by surrounding both bobwhite nests, and an equal number of random locations, with a circular buffer. Random points were placed within the area used by bobwhites on our study area. We then determined the …
A Comparison Of Vertical Velocity Profiles From The Balloon Borne Sounding System And The 915/50 Mhz Radar Wind Profiler/Radio Acoustic Sounding System To Parcel Theory At The Arm Sgp Site, Joshua R. Ravenscraft
A Comparison Of Vertical Velocity Profiles From The Balloon Borne Sounding System And The 915/50 Mhz Radar Wind Profiler/Radio Acoustic Sounding System To Parcel Theory At The Arm Sgp Site, Joshua R. Ravenscraft
Masters Theses
In this study we characterized vertical wind velocity profiles in the troposphere using the Atmospheric Radiation Measurement (ARM) equipment facility at the Southern Great Plains (SGP) site in Lamont OK established by the Department of Energy (DOE) and administered through Argonne National Laboratories (ANL). Using the Balloon Borne Radio Sonde (BBSS) system launched four times per day, we collected ambient temperature profiles and lapse rates from the period of June to September of
2001. Concurrently the Rass Radar Wind Profiler collected vertical wind speed data at 915 MHz continuously throughout this period. The BBSS data is visualized using a Skew-T …
A Web Content Management And Personalization Model Using One-To-One Strategy For Higher Educational Institutions, Yee Pong Ng
A Web Content Management And Personalization Model Using One-To-One Strategy For Higher Educational Institutions, Yee Pong Ng
Masters Theses
This research explored a Web content management and personalization model for higher educational institutions. Through a review of literature and data collected from users, it formulated a conceptual model for Web content management and personalization. The study used the Web site of School of Technology at Eastern Illinois University as a typical case from which to develop the model for higher educational institutions. Understanding the factors influencing user attitudes about the adoption of new Web technologies is extremely important. Such an understanding can help Web developers develop a theoretical framework for a Web model as well as identify its components. …
Chimes In April, Samuel Stinson
Chimes In April, Samuel Stinson
Mahurin Honors College Capstone Experience/Thesis Projects
No abstract provided.
On Legal Interpretations Of The Condorcet Jury Theorem, Paul H. Edelman
On Legal Interpretations Of The Condorcet Jury Theorem, Paul H. Edelman
Vanderbilt Law School Faculty Publications
There has been a spate of interest in the application of the Condorcet Jury Theorem to issues in the law. This theorem holds that a majority vote among a suitably large body of voters, all of whom are more likely than not to vote correctly, will almost surely result in the correct outcome. Its uses have ranged from estimating the correct size of juries to justifying the voting of creditors in Chapter 11 reorganizations. While the mathematics is unassailable, the legal interpretation of the conclusion is dependent on the model of probability one uses when invoking the assumption that the …
Development Of A Watershed And Stream-Reach Spawning Habitat Model For River Herring Alosa Pseudoharengus And Alosa Aestivalis, Rebecca A. Boger
Development Of A Watershed And Stream-Reach Spawning Habitat Model For River Herring Alosa Pseudoharengus And Alosa Aestivalis, Rebecca A. Boger
Dissertations, Theses, and Masters Projects
This research develops a model to identify indicators of potential suitable spawning habitat for river herring, Alosa pseudoharengus and A. aestivalis, using watershed and stream-reach metrics. The results of icthyoplankton samples collected from thirty-four streams feeding into the Rappahannock River below the Embree Dam at Fredericksburg indicate where river herring spawning occurred. Watershed and stream-reach metrics were either measured in the field or derived from digital data in a GIS. Benthic macroinvertebrate analysis was used to compare habitat quality among sites. Streams were classified as either absence or presence of herring eggs or larvae based on the results of the …
Estuarine Suspended Aggregate Dynamics And Characteristics, David C. Fugate
Estuarine Suspended Aggregate Dynamics And Characteristics, David C. Fugate
Dissertations, Theses, and Masters Projects
The research presented in this study is motivated by the need to improve prediction of sediment transport in estuaries. A novel application of the Acoustic Doppler Velocimeter (ADV) in the lower Chesapeake Bay is shown to estimate in-situ particle fall velocity at a single point without affecting the ambient turbulence. Acoustic backscatter from the ADV proved to be the best estimator of mass concentrations due to its apparent insensitivity to the size or density of muddy aggregates. Fall velocities are estimated analytically from a balance of settling and diffusive flux gradients using two methods, one employing Reynolds concentration flux, and …
Organism -Sediment Interactions: The Role Of Seabed Dynamics In Structuring The Mesohaline York River Macrobenthic Community, Elizabeth K. Hinchey
Organism -Sediment Interactions: The Role Of Seabed Dynamics In Structuring The Mesohaline York River Macrobenthic Community, Elizabeth K. Hinchey
Dissertations, Theses, and Masters Projects
Estuaries are dynamic physical environments. The stability of the sediment-water interface is influenced by sources and rates of sediment delivery and physical reworking of sediments by currents, tides, waves and biology, but effects of disruption of this interface on benthic biology are poorly resolved. For this study, I investigated effects of prevalent gradients in seabed disturbance processes and associated seabed characteristics on estuarine benthic community structure and function in the mesohaline York River, a tributary of Chesapeake Bay, USA. I used a variety of approaches to characterize the seabed, including sediment grain size, sediment water content, maximum depth of 7Be, …
The Ortho To Para Transition In Muonic Molecular Hydrogen, Jessica Higgins Deseret Clark
The Ortho To Para Transition In Muonic Molecular Hydrogen, Jessica Higgins Deseret Clark
Dissertations, Theses, and Masters Projects
A precise measurement of the induced weak pseudoscalar coupling constant of the proton, gp, is of interest as a basic test of chiral symmetry breaking. This is the least well-known weak form factor of the nucleon. Muon capture experiments [Jonkmans et al., Phys. Rev. Lett. 77(1996)4512] have been used to measure gp. However, the interpretation of these muon capture experiments requires knowledge of the relative population of the muonic atomic and molecular states for muons in liquid hydrogen. In particular, lambda op, the transition rate between the ortho- and para-molecular states of the pmup molecule, needs to be known with …
State Of Maine Bicycle Crash History 1996 - 2000, Maine Department Of Transportation
State Of Maine Bicycle Crash History 1996 - 2000, Maine Department Of Transportation
Maine Collection
State of Maine Bicycle Crash History 1996 - 2000
Prepared by: Maine Department of Transportation, Bureau of Maintenance and Operations, Accident Records Section, 16 State House Station, Augusta, Maine 04333 (circa 2002)
Contents: Preface / Bicycle Crash Tables and Charts 1996 - 2000 / Detailed Statewide Bicycle Accident Summaries / Appendix
The Geometric Mean As A Generator Of Truth-Value In Heuristic Expert Systems: An Improvement Over The Fuzzy Weighted Arithmetic Mean, Walter L. Dixon
The Geometric Mean As A Generator Of Truth-Value In Heuristic Expert Systems: An Improvement Over The Fuzzy Weighted Arithmetic Mean, Walter L. Dixon
CCE Theses and Dissertations
Many earlier expert systems that were modeled after MYCIN, the first expert system, employed truth-value factors for their rule antecedents (premises) and consequents (conclusions). These crisp truth-value factors were usually called certainty factors and attempted to provide a measure of confidence and computational capability to the analysis of rule uncertainty (Shortliffe, 1977; Kandel, 1994). However, in the literature criticism has been often expressed concerning the lack of precision a crisp truth/certainty factor value conveys (Zadeh, 1983; Turban, 1993). Zadeh (1973) and Xingui (1988) utilized the weighted fuzzy average algorithm to improve the precision of truth/certainty factor values. Kandel (1994) further …
Enterprise Integration Modeling Linking Enterprise Integration Architecture With Business Strategy Planning, Easton B. Rhodd
Enterprise Integration Modeling Linking Enterprise Integration Architecture With Business Strategy Planning, Easton B. Rhodd
CCE Theses and Dissertations
The goals for this study were twofold. The first goal was to identify planning variables for linking both organizational and architectural objectives for developing enterprise integration architecture. The second goal was to validate enterprise integration modeling methodology as a viable planning tool for the design, development, and maintenance of the enterprise integration architecture.
This lack of linkage at the intellectual dimension level can be characterized as having a dysfunctional effect on enterprise integration strategy formulation and infrastructure development. There is a disjoint between adoptions of appropriate information technology in relation to organizational objectives. This includes misapplication of investments in information …
The Design Of Online Learning Communities For Older Adults, Martha Marie Snyder
The Design Of Online Learning Communities For Older Adults, Martha Marie Snyder
CCE Theses and Dissertations
Rapid, ongoing advancements in the growth of the Internet and web-based technology coupled with the steadily increasing number of older adults in our society create a significant need for the design of safe, convenient, and accessible online learning communities for this demographic. The primary goal of this dissertation was to conduct formative research into methodologies for developing a new instructional-design theory for establishing online learning communities for older adults. The aim of this work was to apply formative research, which is a type of developmental research used to create a new design theory or improve an existing theory, to the …
A Comparison Of The Use Of Artificial Neural Networks, Fractal Time Series And Fractal Neural Networks In Financial Forecasts, Beverly A. Swisshelm
A Comparison Of The Use Of Artificial Neural Networks, Fractal Time Series And Fractal Neural Networks In Financial Forecasts, Beverly A. Swisshelm
CCE Theses and Dissertations
Effective prediction of future financial states has been a major quest for groups ranging from national governments to individual investors. The size, diversity and complexity of financial markets make traditional statistical methods ineffective in predicting beyond a very short time frame. Alternative models using artificial neural networks and fractal time series have had better results in long-term predictions, but still do not work in all situations. This dissertation combined features of artificial neural networks and fractal time series to create a fractal neural network. Fractals exhibit repetitive patterns when a unit is broken down into its components. This similarity property …
Y2k Serendipity: Benefits And Spinoffs, Roy Gwen Taunton
Y2k Serendipity: Benefits And Spinoffs, Roy Gwen Taunton
CCE Theses and Dissertations
The primary purpose of the researcher this study was to determine what, if any, unexpected benefits, spin-offs, and other "serendipitous" events occurred as a result of the year 2000 remediation process undertaken by businesses, industry, and other organizations. This was measured through the use of an online survey instrument comprised of a series of questions designed to measure and discover those benefits. The survey was sent to approximately 50 different businesses/organizations during the pilot stage of this study and 250 during the main stage of this study. These businesses/organizations were randomly selected from the sampling frame using random sampling techniques. …
Bouncing Branes, Emil Prodanov
Bouncing Branes, Emil Prodanov
Articles
Two classical scalar fields are minimally coupled to gravity in the Kachru-Shulz-Silverstein scenario with a rolling fifth radius. A Tolman wormhole solution is found for a R x S^3 brane with Lorentz metric and for a R x AdS_3 brane with positive definite metric.
Subsidence Hazards As A Consequence Of Dam, Reservoir And Tunnel Construction, Petar Milanovic
Subsidence Hazards As A Consequence Of Dam, Reservoir And Tunnel Construction, Petar Milanovic
International Journal of Speleology
Considering all man-made structures in karst areas, dams, reservoirs and tunnels are the most vulnerable in relation to induced subsidence and caverns. Reservoirs that are located entirely or partially on karstified rocks covered with unconsolidated sediments are especially subsidence-prone. As a consequence of induced subsidence a number of reservoirs in karst areas failed and were never fully filled. Such subsidence formation is very damaging because the development is unpredictable and practically instantaneous. Reservoirs in karst areas may fail to fill despite an extensive site investigation programs and sealing treatment. Every problem is unique and past experiences are never repeated. This …
Four Anharmonic Oscillators On A Circle, J. N. Boyd, R. G. Hudepohl, P. N. Raychowdhury
Four Anharmonic Oscillators On A Circle, J. N. Boyd, R. G. Hudepohl, P. N. Raychowdhury
Virginia Journal of Science
Four identical, uniformly separated particles interconnected by ideal anharmonic springs are constrained to move on a fixed, frictionless circular track. The Lagrangian for the system is written and then transformed by matrix operations suggested by the symmetry of the arrangement of springs and particles. The equations of motion derived from the transformed Lagrangian yield four natural frequencies of motion.