Physical Sciences and Mathematics Commons^™

Aquatic And Riparian Effectiveness Monitoring Program, Johanna Gillham

WWU Honors College Senior Projects

I chose to use my experience as an employee of the U.S. Bureau of Land Management (BLM) in order to fulfill Huxley College graduation requirements, as well as Western Washington University (WWU) Honors Program requirements. Therefore, I completed a term position as a Biological Technician for the Aquatic Riparian Effectiveness Monitoring Program (AREMP) during the summer of 2003.

AREMP is the watershed condition module of the Interagency Regional Monitoring Program for President Bill Clinton’s Northwest Forest Plan (NWFP). The NWFP encompasses more than 25 million acres of federally managed land in Western Washington and Oregon, and Northwestern California, and is …

Perturbation Approach To The Self-Energy Of Non-S Hydrogenic States, Eric Olivier Le Bigot, Ulrich D. Jentschura, Peter J. Mohr, Paul Indelicato, Gerhard Soff

Physics Faculty Research & Creative Works

We present results on the self-energy correction to the energy levels of hydrogen and hydrogenlike ions. The self energy represents the largest QED correction to the relativistic (Dirac-Coulomb) energy of a bound electron. We focus on the perturbation expansion of the self energy of non-S states, and provide estimates of the so-called A₆₀ perturbative coefficient, which can be considered as a relativistic Bethe logarithm. Precise values of A₆₀ are given for many P, D, F and G states, while estimates are given for other electronic states. These results can be used in high-precision spectroscopy experiments in hydrogen and …

Modeling Of The Inverse Heat -Conduction Problem With Application To Laser Chemical Vapor Deposition And Bioheat Transfer, Peng Zhen

Doctoral Dissertations

This dissertation consists of two parts. Part one deals with three-dimensional laser induced chemical vapor deposition (3D-LCVD), whereas part two deals with a Pennes model of a 3D skin structure. LCVD is an important technique in manufacturing complex micro-structures with high aspect ratio. In part one, a numerical model was developed for simulating kinetically-limited growth of an axisymmetric cylindrical rod by pre-specifying the surface temperature distribution required for growing the rod and then by obtaining optimized laser power that gives rise to the pre-specified temperature distribution. The temperature distribution at the surface of the rod was assumed to be at …

Cross Sections Fall 2003, Department Of Physics And Astronomy

Cross Sections

No abstract provided.

Earth News, V27, Fall 2003, Department Of Earth Science, University Of Northern Iowa.

Earth News

Inside this issue:

--- Earth Science Staff Activities
--- Earth Science Majors
--- 2002 Earth Science Graduates
--- Student Internships
--- Student Research Presentations
--- STORM Project Team
--- Earth Science Seminar Series
--- Sigma Gamma Epsilon - Gamma Sigma Chapter
--- Gifts to the Department of Earth Science
--- 2003-2004 Scholarship and Award Recipients
--- Spring Break 2003 Field Course: Geology and Natural History of Big Bend National Park
--- Earth Science Alumni News

A Combinatorial Approach To Hyperharmonic Numbers, Arthur T. Benjamin, David Gaebler '04, Robert Gaebler '04

All HMC Faculty Publications and Research

Hyperharmonic numbers arise by taking repeated partial sums of harmonic numbers. These numbers can be expressed in terms of r-Stirling numbers, leading to combinatorial interpretations of many interesting identities.

Stability In The Proportion Of Harbor Seals Hauled Out Under Locally Ideal Conditions, Michael Simpkins, David Withrow, Jack Cesarone, Peter Boveng

United States Department of Commerce: Staff Publications

We monitored the haul-out behavior of 68 radio-tagged harbor seals (Phoca vitulina) during the molt season at two Alaskan haul-out sites (Grand Island, August-September 1994; Nanvak Bay, August-September 2000). For each site, we created a statistical model of the proportion of seals hauled out as a function of date, time of day, tide, and weather covariates. Using these models, we identified the conditions that would result in the greatest proportion of seals hauled out. Although those “ideal conditions” differed between sites, the proportion of seals predicted to be hauled out under those conditions was very similar (81.3% for …

Canadian Cooperative Wildlife Health Centre, Volume 9-2, Fall 2003

Canadian Cooperative Wildlife Health Centre: Newsletters and Publications

Type E Botulism in Fish-Eating Birds on Lake Huron and Lake Erie 1998-2003
Chronic Wasting Disease in free-ranging cervids in western Canada
Esophageal Lesions in Crows
Surplus killing of roseate terns and common terns by a mink
West Nile Virus infection in Québec Raptors : 2003 season
Mortality in Great Black-Backed Gulls near Presqu'ile
Type E Botulism Update
West Nile Virus Update
Adenovirus Encephalitis in a Wild Fox
Newcastle Disease Virus in Double-crested Cormorants in Alberta and Saskatchewan in 2003
West Nile Virus in Sage Grouse
The Research Group for Arctic Parasitology (RGAP), November 2003
Death of a Grizzly Bear …

Single-Walled Carbon Nanotube Bundles Intercalated With Semiconductor Nanoparticles, Manashi Nath, Pallavi V. Teredesai, D. V. S. Muthu, A. K. Sood, Chintamani Nagesa Ramachandra Rao

Chemistry Faculty Research & Creative Works

Nanoparticles of CdSe, CdS and ZnSe have been incorporated in the inter-tubular gaps of single-walled carbon nanotube (SWNT) bundles. Electron microscope, X-ray diffraction (XRD), electronic spectroscopy and Raman studies have been employed to characterize these systems. The lengths of the intercalate inside the bundles could be varied by changing the reaction conditions. Electronic absorption and photoluminescence studies from the semiconductor intercalates show the expected blue-shift with respect to the corresponding bulk samples in CdS and ZnS samples. The SWNT lattice is expanded on incorporating CdSe as confirmed by XRD in the low-angle range. The expansion in the lattice is also …

Ab Initio Theoretical Studies Of Potential Energy Surfaces In The Photodissociation Of The Vinyl Radical. I. Ã State Dissociation, Peng Zhang, Stephan Irle, Keiji Morokuma, Gregory S. Tschumper

Chemistry Faculty Research & Creative Works

The mechanism of photodissociation of the vinyl radical, C₂H₃ was studied with high-level ab initio methods. Geometry optimizations of stationary points and surface crossing seams were performed with complete active space self-consistent field method. Both internal conversion and intersystem crossing channels which bring the excited vinyl radical down to ground state potential energy surface were identified.

Student Fact Book, Fall 2003, Twenty-Seventh Annual Edition, Wright State University, Office Of Student Information Systems, Wright State University

Wright State University Student Fact Books

The student fact book has general demographic information on all students enrolled at Wright State University for Fall Quarter, 2003.

Observation Of 430 Nm Electroluminescence From Zno/Gan Heterojunction Light-Emitting Diodes, Ya I. Alivov, J. E. Van Nostrand, David C. Look, M. V. Chukichev, B. M. Ataev

Physics Faculty Publications

In this work, we report on the growth, fabrication, and device characterization of wide-band-gap heterojunction light-emitting diodes based on the n-ZnO/p-GaN material system. The layer structure is achieved by first growing a Mg-doped GaN film of thickness 1 μm on Al₂O₃(0001) by molecular-beam epitaxy, then by growing Ga-doped ZnO film of thickness 1 μm by chemical vapor deposition on the p-GaN layer. Room-temperature electroluminescence in the blue-violet region with peak wavelength 430 nm is observed from this structure under forward bias. Light–current characteristics of these light-emitting diodes are reported, and a superlinear …

Benthic Algae Control Sediment-Water Column Fluxes Of Organic And Inorganic Nitrogen Compounds In A Temperate Lagoon, Ac Tyler, Kj Mcglathery, Iris C. Anderson

VIMS Articles

Coastal lagoons are a common land-margin feature worldwide and function as an important filter for nutrients entering from the watershed. The shallow nature of lagoons leads to dominance by benthic autotrophs, which can regulate benthic-pelagic coupling. Here we demonstrate that both microalgae and macroalgae are important in controlling dissolved inorganic as well as organic nitrogen (DIN and DON) fluxes between the sediments and the water column. Fluxes of nitrogen (NH4+, NO3-, DON, urea, and dissolved free and combined amino acids [DFAA, DCAA]) and O-2 were measured from October 1998 through August 1999 in sediment cores collected from Hog Island Bay, …

Resonant Photoemission In F-Electron Systems: Pu And Gd, James G. Tobin, Brandon W. Chung, Roland K. Schulze, Jeff Russell Terry, John Douglas Farr, David K. Shuh, K. Heinzelman, Eli Rotenberg, George Daniel Waddill, Gerrit V. Van Der Laan

Physics Faculty Research & Creative Works

Resonant photoemission in the Pu 5f and Pu 6p states is compared to that in the Gd 4f and Gd 5p states. Spectral simulations, based upon an atomic model with angular momentum coupling, are compared to the Gd and Pu results. Additional spectroscopic measurements of Pu, including core level photoemission and x-ray absorption, are also presented.

Recent Paleoseismic Investigations In Northern And Western Thailand, Clark H. Fenton, Punya Charusiri, Spencer H. Wood

Geosciences Faculty Publications and Presentations

Recent paleoseismic investigations have identified a number of active faults in Northern and Western Thailand. Northern Thailand is an intraplate basin and range province, comprised of north-south-trending Cenozoic intermontane grabens and half grabens, bounded by north- to northwest-striking normal to normal-oblique faults and northeast-striking left-lateral strike-slip faults. The basin-bounding normal faults are marked by steep, linear range fronts with triangular facets and wineglass canyons and have slip rates of 0.1 to 0.8 mm/yr. Based on limited data, the average vertical displacement-per-event is about 1.0 to 1.5 m. These faults are characterized by recurrence intervals of thousands to tens of thousands …

Reviews Of Fatal Harvest: The Tragedy Of Industrial Agriculture And The Fatal Harvest Reader: The Tragedy Of Industrial Agriculture, Edited By Andrew Kimbrell, Charles A. Francis

Great Plains Research: A Journal of Natural and Social Sciences

Fatal Harvest introduces and dispels key myths about industrial agriculture: greater efficiency; safe and nutritious food that is cheap to consumers; benefits to wildlife and environment; how biotechnology will save the world. In essays by leading proponents of a more equitable and sustainable food system, the book presents compelling evidence that alternative systems guided by an agrarian ethic will better address our food needs while protecting our natural environment and soil resources.

Wendell Berry cites the separation of people from their food supply and natural environment as a causal factor in our ready acceptance of today's industrial agriculture. When we …

Where's (The) Computer Science In Service-Learning?, Pete Sanderson

Mathematics Faculty Scholarship

Service-learning is a form of experiential learning that integrates classroom concepts with related community service. Computer science faculty and students stand to reap great benefit from the integration of service-learning practice and philosophy into curricula. Many faculty are already doing so, yet computer science is not very visible in the service-learning community. Similarly, service-learning is not very visible in the computer science education community. It is imperative for those computer science faculty involved in service-learning to develop, apply and disseminate effective frameworks for integrating service learning into undergraduate computer science curricula so that its benefits may be more fully realized.

Application Of Interferometric Wave Propagation For Refractive Index Measurements Of Solids, Glen D. Gillen, Shekhar Guha

Physics

The output signal of a modified Michelson interferometer with a flat-parallel sample, whose normal is oriented at an arbitrary angle with respect to the laser path, placed in one arm is analyzed. The interferometric pattern as a function of angle is calculated, and used to determine the absolute refractive index.

Seismogenic Zone Structure Of The Southern Middle America Trench, Costa Rica, H. R. Deshon, S. Y. Schwartz, S. L. Bilek, L. M. Dorman, V. Gonzalez, J. M. Protti, E. R. Flueh, Timothy H. Dixon

School of Geosciences Faculty and Staff Publications

The shallow seismogenic portion of subduction zones generates damaging large and great earthquakes. This study provides structural constraints on the seismogenic zone of the Middle America Trench offshore central Costa Rica and insights into the physical and mechanical characteristics controlling seismogenesis. We have located ∼300 events that occurred following the M_W 6.9, 20 August 1999, Quepos, Costa Rica, underthrusting earthquake using a three-dimensional velocity model and arrival time data recorded by a temporary local network of land and ocean bottom seismometers. We use aftershock locations to define the geometry and characteristics of the seismogenic zone in this region. These …

Microtonal Systems And Guitar Composition, Michael Nielsen

Masters

This thesis focuses on the use of microtones in guitar composition. In the course of this study the physical aspects of musical sound (pitch, loudness and quality/timbre), vibrational frequencies of strings, and the theory of musical scales and tuning systems are discussed. Whole-number ratios corresponding to musical intervals within the twelve-note/equal temperament scale are calculated in relation to the overtone series for the purpose of surveying consonance and dissonance within the tempered system. These are compared to the ratios for corresponding intervals within the overtone series. Whole-number ratios are also calculated for intervals involving the microtones referred to in this …

Materials Characterization At Utah State University: Facilities And Knowledgebase Of Electronic Properties Of Materials Applicable To Spacecraft Charging, John R. Dennison, C. D. Thomson, J. T. Kite, V. V. Zavyalov, Jodie Corbridge

All Physics Faculty Publications

In an effort to improve the reliability and versatility of spacecraft charging models designed to assist spacecraft designers in accommodating and mitigating the harmful effects of charging on spacecraft, the NASA Space Environments and Effects (SEE) Program has funded development of facilities at Utah State University for the measurement of the electronic properties of both conducting and insulating spacecraft materials. We present here an overview of our instrumentation and capabilities, which are particularly well suited to study electron emission as related to spacecraft charging. These measurements include electron-induced secondary and backscattered yields, spectra, and angular resolved measurements as a function …

Utilising Riometry To Observe Gravity Waves In The Sunlit Mesosphere, M. J. Jarvis, R. E. Hibbins, Michael J. Taylor, T. J. Rosenberg

All Physics Faculty Publications

The novel use of imaging riometers to observe mesospheric gravity waves is described. Imaging riometers respond to changes in the absorption of cosmic radio noise in the ionospheric D-region which enables them to detect the compression and rarefaction of the atmosphere at 90 km altitude generated by the passage of gravity waves. A considerable advantage of this method is that, unlike conventional techniques which rely on imaging faint optical emissions from the airglow layer at 87 km altitude, riometers remain operative under daylit, moonlit or cloudy conditions. This is particularly important for research into gravity wave forcing of mesospheric temperature …

Examination Of Focused Beam Propagation Through A Finite Non-Reciprocal Planar Chiral Slab Using Complex Fresnel Coefficients And Dual Transforms, Monish Ranjan Chatterjee, Sumit Nema, Partha P. Banerjee

Electrical and Computer Engineering Faculty Publications

Recently, uniform plane wave propagation across a nonchiral-chiral interface was examined via the development of appropriate Fresnel coefficients. In this extension, propagation of focused uniform and profiled beams through a finite, planar nonreciprocal chiral slab is investigated using complex Fresnel coefficients via angular plane wave decomposition and dual transforms.

A Note On The Numerical Solution Of High-Order Differential Equations, Y. Wang, Yibao Zhao, G. W. Wei

Research Collection Lee Kong Chian School Of Business

Numerical solution of high-order differential equations with multi-boundary conditions is discussed in this paper. Motivated by the discrete singular convolution algorithm, the use of fictitious points as additional unknowns is proposed in the implementation of locally supported Lagrange polynomials. The proposed method can be regarded as a local adaptive differential quadrature method. Two examples, an eigenvalue problem and a boundary-value problem, which are governed by a sixth-order differential equation and an eighth-order differential equation, respectively, are employed to illustrate the proposed method.

Data Summary From The Tampa Bay Interagency Seagrass Monitoring Program Through The Year 2002, Walt Avery, Roger Johansson

Reports

Results regarding seagrass species abundance, distribution, and zonation over time are presented for the 1997-2002 period in Hillsborough Bay (HB, Figures 15-26) and the 1998-2002 period for Old Tampa Bay (OTB, Figures 3-14), Middle Tampa Bay (MTB, Figures 28-40), Lower Tampa Bay, including Terra Ceia Bay (LTB, Figures 42-56), and Boca Ciega Bay (BCB, Figures 58-68). For each transect, results are presented in a graphic format illustrating annual species composition, abundance, and distribution. Seagrass abundance is presented as percent coverage within a square meter using the Braun Blanquet coverage class system.

Fault Creep And Microseismicity On The Hayward Fault, California: Implications For Asperity Size, Christina R. Gans, Kevin P. Furlong, Rocco Malservisi

School of Geosciences Faculty and Staff Publications

The Hayward fault is documented to undergo significant creep, with some patches accommodating 50% or more of the long‐term fault displacement. In spite of this, the fault has also experienced moderate to large earthquakes. By comparing the patterns of microseismicity observed on the fault with models of fault zone creep, we can investigate the long‐term displacement/deformation history of the fault in terms of the relative roles of aseismic creep, fault slip accommodated through microseismicity, and strain accumulation (slip deficit). We find that microseismicity on the Hayward fault produces a negligible percentage of the seismic moment dissipated on the fault. Combining …

National Environmental Compliance Handbook, United States Department Of Agriculture, Natural Resources Conservation Service

All U.S. Government Documents (Utah Regional Depository)

The National Environmental Compliance Handbook (NECH) provides guidance to Natural Resource Conservation Service (NRCS) officials about how to comply with Federal environmental requirements when delivering technical and financial assistance. The objectives of this Handbook are to: • Improve the quality of plans and decisions by integrating environmental considerations into the planning process; • Promote efficiency in preparing environmental documentation; • Provide a systematic framework for integrating the NRCS planning process and environmental requirements; and • Serve as a reference for NRCS environmental compliance procedures.

Mobicom Poster: Evaluating Location Predictors With Extensive Wi-Fi Mobility Data, Libo Song, David Kotz, Ravi Jain, Xiaoning He

Dartmouth Scholarship

A fundamental problem in mobile computing and wireless networks is the ability to track and predict the location of mobile devices. An accurate location predictor can significantly improve the performance or reliability of wireless network protocols, the wireless network infrastructure itself, and many applications in pervasive computing. These improvements lead to a better user experience, to a more cost-effective infrastructure, or both. Location prediction has been proposed in many areas of wireless cellular networks as a means of enhancing performance, including better mobility management, improved assignment of cells to location areas, more efficient paging, and call admission control. To the …

ข่าวกิจกรรมสิ่งแวดล้อม

Thai Environment

No abstract provided.

เทคโนโลยีชีวภาพกับการบำบัดสารเคมีอันตราย (ตอนที่ 1), เอกวัล ลือพร้อมชัย

Thai Environment

No abstract provided.