Physical Sciences and Mathematics Commons^™

The Design, Synthesis And Analysis Of High-Affinity Peptide-Peptoid Hybrid Ligands That Bind Evh1 Domains & The Synthesis Of 1-Substituted M-Terphenyls That Seve As N^C^C And O^C^C Ligands For Use In Cyclometallated Platinum Complexes, Eric J. Dimise

Honors Theses

Protein-ligand interactions are often at the center of cellular regulatory processes. The Enabled/ vasodilator Stimulated Phosphoprotein Homology 1 (EVH1) domain of the Enabled/ Vasodilator Stimulated Phosphoprotein (Ena/VASP) protein family has been linked to the regulation of the actin cytoskeleton through multiple protein-protein interactions via the recognition of polyproline amino acid sequences. Here, we examine the structural and physicochemical features of the EVH1 domain in an effort to design high affinity peptide-peptoid hybrid ligands that compete with EVH1's natural binding partners. & The unique photophysical properties of aryl, tridentate complexes of platinum have recently led to a surge in ligand design …

Inclusion Of Customized Quantum Dots Into Laponite Based Nanocomposites, Jennifer Rae Eliseo

Honors Theses

Quantum dot (QD) semiconductor nanocrystals offer unique electronic, magnetic, and optical properties, that can be used in advanced materials applications including optoelectronics, catalysis, sensing, and quantum computing. Tailoring of quantum dot surface coatings allows for control of self-assembly and facile inclusion into various host matrices. Querner and colleges have provided a novel synthetic route to graft aniline tetramer units onto quantum dots via a disulfide bridge. A key goal of our work has been the optimization of this synthesis for inclusion of functionalized QDs within Laponite/polyaniline nanoscaffolds. Uv/visible and fluorescence spectroscopy were used to study frequency resonance energy transfer within …

Grazing Intensity Effects On Northern Plains Mixed-Grass Prairie, Wendi M. Rogers, Donald R. Kirby, Paul E. Nyren, Bob D. Patton, Edward S. Dekeyser

The Prairie Naturalist

We evaluated the effects of long-term (1988 to 2000) grazing on northern mixed-grass prairie at tI.e Central Grasslands Research Extension Center in south-central North Dakota. We did not detect a difference in herbaceous basal cover between grazing intensities following 12 consecutive years of season-long moderate (50% removal of annual above-ground standing crop) and heavy (80% removal of annual above-ground standing crop) grazing. However, both moderate and heavy grazing intensities reduced above-ground herbaceous standing crop, total root biomass, and soil organic carbon. Moderate grazing intensity maintained a greater amount of deep (10 to 20 cm) and total root biomass relative to …

Christmas Bird Counts For North Dakota 2004, Robert N. Randall

The Prairie Naturalist

Christmas Bird Counts were made in 21 areas in North Dakota again in the year 2004. During the year a new count site was established in Pembina County and registered with the Audubon Society but an actual count was not made in the area this year. The location of the all areas in which counts were actually made is shown in Fig. 1. A relatively mild fall season leading up to the count period left much more open water than normal. Weather conditions during the count period varied widely with some areas reporting temperatures in the 40's and 50's of, …

Influence Of Biocontrol Insects On Canada Thistle: Seed Production, Germinability, And Viability, Gary E. Larson, Tim A. Wittig, Kenneth F. Higgins, Brent Turnipseed, Dawn M. Gardner

The Prairie Naturalist

We conducted surveys of thistle-feeding insects on Canada thistle [Cirsium arvense (L.) Scop.] during the 2000 and 2001 growing seasons at Lacreek National Wildlife Refuge (LNWR), South Dakota, and analyzed their impact on thistle seed production, germination, and viability. Insects included Canada thistle stem weevil [Hadroplontus litura, formerly Ceurtorhynchus lilura, (Coleoptera: Curculionidae)], introduced at LNWR as a biocontrol agent, plus two seed head parasites, the thistle head weevil [Rhinocyllus conicus (Coleoptera: Curculionidae)] and the seed head fly [Terellia ruficauda (Diptera: Tephritidae)]. Infestation by these insects caused no significant reduction in per-head seed yield, with means ranging from 82.5 seeds per …

The Prairie Naturalist: Volume 37, No. 2 June 2005

The Prairie Naturalist

BIOLOGICAL NOTES ON GROUND-NESTING DIGGER WASPS FROM WESTERN NEBRASKA R. W. Matthews, and J. R. Matthews 61

GRAZING INTENSITY EFFECTS ON NORTHERN PLAINS MIXED-GRASS PRAIRIE W. M. Rogers, D. R. Kirby, P. E. Nyren, B. D. Patton, and E. S. DeKeyser 73

INFLUENCE OF BIOCONTROL INSECTS ON CANADA THISTLE: SEED PRODUCTION.,GERMINABILITY, AND VIABILITY G. E. Larson, T. A. Wittig, K. F. Higgins, B. Turnipseed, and D. M Gardner 85

MAMMALS OF FORT LEAVENWORTH, KANSAS: A 6O-YEAR FOLLOW-UP TO BRUMWELL (1951) c. R. Davis, F. B. Stangl, Jr., and L. W. Robbins 101

CHRISTMAS BIRD COUNTS FOR NORTH DAKOTA 2004 R. …

Mammals Of Fort Leavenworth, Kansas: A 60-Year Followup To Brumwell (1951), Clay R. Davis, Frederick B. Stangl Jr., Lynn W. Robbins

The Prairie Naturalist

More than 60 years have elapsed since Brumwell's (1951) comprehensive assessment during 193911940 of resident terrestrial vertebrates from Fort Leavenworth Military Rooervation in northeastern Kansas. Subsequent studies have been accomplished for the amphibians, reptiles, and birds. Our study is the first to assess intervening changes in the mammalian composition of this diverse local fauna. Notable observations include: the decline or extirpation of the black-tailed jackrabbit (Lepus californicus), Franklin's ground squirrel (Spermophilus franklinii), muskrat (Ondatra zibethicus), long-tailed weasel (Mustela frenata) and eastern spotted skunk (Spilogale putorius); the return or recovery of locally extirpated gray fox (Urocyon cinereoargenteus), puma (Puma concolor), and …

Radiolytic Damage To Freeze-Dried Human Amniotic Membrane, Chester C. Deocaris, Lucille B. Abad, Erwin P. Enriquez, Zenaida M. De Guzman, Ann A. Aliganga, Marianne B. Tangonan, Mitos M. Tolentino, Luzviminda V. Ignacio, Custer C. Deocaris

Chemistry Faculty Publications

Radiation-sterilization at 25 and 35 kGy of freeze-dried human amniotic membranes caused degradative effects in the biologic dressing. The decrease in pH and increase in UV absorption showed that radiation may have caused possible radiolytic changes in this biomaterial. Total nitrogen content, tensile strength, and [H3]water-retention capacity of the irradiated membranes remained invariable. Molecular topography analysis by atomic force microscopy showed radiation-induced defrayment of the collagen fibers, the major structural protein in amnion.

Aggregate Nearest Neighbor Queries In Spatial Databases, Dimitris Papadias, Yufei Tao, Kyriakos Mouratidis, Chun Kit Hui

Research Collection School Of Computing and Information Systems

Given two spatial datasets P (e.g., facilities) and Q (queries), an aggregate nearest neighbor (ANN) query retrieves the point(s) of P with the smallest aggregate distance(s) to points in Q. Assuming, for example, n users at locations q1,...qn, an ANN query outputs the facility p belongs to P that minimizes the sum of distances |pqi| for 1 is less than or equal to i is less than or equal to n that the users have to travel in order to meet there. Similarly, another ANN query may report the point p belongs to P that minimizes the maximum distance that …

Book Review: Across The Board: The Mathematics Of Chessboard Problems By John J. Watkins, Arthur T. Benjamin

All HMC Faculty Publications and Research

I think I became a mathematician because I loved to play games as a child. I learned about probability and expectation by playing games like backgammon, bridge, and Risk. But I experienced the greater thrill of careful deductive reasoning through games like Mastermind and chess. In fact, for many years I took the game of chess quite seriously and played in many tournaments. But I gave up the game when I started college and turned my attention to more serious pursuits, like learning real mathematics.

Counting On Determinants, Arthur T. Benjamin, Naiomi T. Cameron

All HMC Faculty Publications and Research

No abstract provided in this article.

Chamaeleo Gracilis (Graceful Chameleon). Reproduction In Florida., Richard M. Engeman, Desta Hansen, Henry T. Smith

United States Department of Agriculture Wildlife Services: Staff Publications

No abstract provided.

Leiocephalus Carinatus Armol'ri (Northern Curlytailed Lizard). Cannibalism., Christopher L. Dean, Richard M. Engeman, Henry T. Smith, Walter E. Meshaka Jr.

United States Department of Agriculture Wildlife Services: Staff Publications

No abstract provided.

Weast Nile Virus Serosurveillance In Iowa White-Tailed Deer (1999-2003), Julian Santatella, Robert Mclean, Jeffrey S. Hall, James S. Gill, Richard A. Bowen, Harlo H. Hadow, Larry Clark

United States Department of Agriculture Wildlife Services: Staff Publications

Sera from white-tailed deer (Odocoileus virginianus) were collected in Iowa during the winter months (1999-2003), 2 years before and after West Nile virus (WNV) was first reported in Iowa (2001), and were analyzed for antibodies to WNV. Samples from 1999 to 2001 were antibody negalive by blocking enzyme-linikedI immunosorbent assay (bELISA) and plaque reduction neutralization test (PRNT₉₀). Prevalence derived from bELISA (2002, 12.7%; 2003. 11.2%) and WNV PRNT₉₀ (2002,7.9%; 2003, 8.5%) assays were similar. All sanlples were negative for antibodies against St. Louis encephalitis virus as determined by PRNT₉₀. Antibodies to flaviviruses were …

Self And On-Selfadjoint Sturm-Liouville Operators With Exponentially Decaying Potentials, Alain Kerouanton

Doctoral

In this thesis we investigate the properties of a class of linear differential operators known as Sturm-Liouville operators. Sturm-Liouville operators arise from differential equations of the form - y”+q(x)y = λy, where q is known as the potential and λ is a spectral parameter. This differential equation has been of great importance in mathematics and physics alike. We allow the potential to be real or complex valued and assume that q satisfies |q(x)|≤ce-ax, x≥0, where a >0 and c > 0. We first give a brief account of the mathematical background we will be using and then proceed to give a …

Canadian Cooperatie Wildlife Health Centre, Annual Report 2004-2005 (English)

Canadian Cooperative Wildlife Health Centre: Newsletters and Publications

Annual Report 2004-2005:
The CCWHC is a university-based, inter-agency partnership through which Canada’s four Colleges of Veterinary Medicine, government agencies at all levels and non-government agencies pool their resources and expertise to reduce the economic and ecological costs and impacts of wild animal diseases in Canada.

Table Of Contents (2005), Association Of Christians In The Mathematical Sciences

ACMS Conference Proceedings 2005

Fifteenth Conference of the Association of Christians in the Mathematical Sciences

Physicist's Reformed Critique Of Nonreductive Physicalism And Emergence, Arnold E. Sikkema

Pro Rege

Two figures are included. Dr. Sikkema has obtained permission from the first author of the paper from which Fig. 2 is adapted, as well as from the publisher.

Laurance Lake Temperature Model, Chris Berger, Scott A. Wells, Robert Leslie Annear

Civil and Environmental Engineering Faculty Publications and Presentations

Laurance Lake is a reservoir located in Hood River County, Oregon (Figure 1). It is located at the base on Mt. Hood in Oregon (see Figure 2 and Figure 3), discharges into the Middle Fork of the Hood River. The reservoir was constructed in 1968 for irrigation storage and has a capacity 3564 acre- feet at full pool. Since the river vio lates temperature standards, this study has been designed to construct a hydrodynamic and temperature model of Laurance reservoir in order to assess strategies for improving temperatures in the Middle Fork River.

The objectives of the study are then …

Biologically Active Fluorescent Farnesol Analogs, Roman Shchepin, Razvan Dumitru, Kenneth W. Nickerson, Miranda Lund, Patrick Dussault

Patrick Dussault Publications

We describe ten polyene analogs of farnesol, typified by 3,7,11-trimethyl-2,4,6,8,10-dodecapentenaldehyde oxime, which preserve the length, cross-section, and approximate hydrophobicity of farnesol. Four of the ten display strong quorum- sensing activity in the human pathogen Candida albicans, with IC₅₀ values for inhibition of germ-tube formation as low as 10 μM. The polyenes display absorption maxima between 320 and 380 nm, with the extinction coefficients for the oximes approaching 100,000. All but two of the analogs are fluorescent, with excitation maxima varying over the range of 320–370 nm. Oxime anti-4, which can undergo fluorescence excitation at wavelengths beyond 400 …

Semantic Management Of Web Services Using The Core Ontology Of Services, Daniel Oberle, Steffen Lamparter, Andreas Eberhart, Stephan Grimm, Sudhir Agarwal, Rudi Studer, Pascal Hitzler

Kno.e.sis Publications

Different Web Service standards like WSDL, WS-Security, WS-Policy etc., henceforth referred to as WS*, factorize Web Service management tasks into different aspects, such as input/output, workflow, or security. The advantages of WS* are multiple and have already achieved industrial impact. WS* descriptions are exchangeable and developers may use different implementations for the same Web Service description. The disadvantages of WS*, however, are also apparent: even though the different standards are complementary, they must overlap and one may produce models composed of different WS* descriptions, which are inconsistent with each other, but the reasons for the inconsistencies are not easily determined. …

1,12-Diferrocenyldodecane At 100 K, Danielle M. Bequeath, Richard L. Porter, Michael W. Lufaso, Timothy R. Wagner, Rachel L. Kusnic, Matthias Zeller, Larry S. Curtin

Chemistry Faculty Research and Scholarship

1,12-Diferrocenyldodecane, [Fe₂(C₅H₅)₂(C₂₂H₃₂)], was synthesized from ferrocene and 1,12-dodecanedioyl chloride, followed by Clemmensen reduction. The single-crystal structure was determined at 100 K by X-ray diffraction and the spectroscopic and cyclic voltammetric data of 1,12-diferrocenyldodecane and its precursor are reported.

An Evolutionary Algorithm To Generate Hyper-Ellipsoid Detectors For Negative Selection, Joseph M. Shapiro, Gary B. Lamont, Gilbert L. Peterson

Faculty Publications

This paper introduces hyper-ellipsoids as an improvement to hyper-spheres as intrusion detectors in a negative selection problem within an artificial immune system. Since hyper-spheres are a specialization of hyper-ellipsoids, hyper-ellipsoids retain the benefits of hyper-spheres. However, hyper-ellipsoids are much more flexible, mostly in that they can be stretched and reoriented. The viability of using hyper-ellipsoids is established using several pedagogical problems. We conjecture that fewer hyper-ellipsoids than hyper-spheres are needed to achieve similar coverage of nonself space in a negative selection problem. Experimentation validates this conjecture. In pedagogical benchmark problems, the number of hyper-ellipsoids to achieve good results is significantly …

Evidence Of A Weak Galactic Center Magnetic Field From Diffuse Low-Frequency Nonthermal Radio Emission, Ted La Rosa, Crystal L. Brogan, Steven N. Shore, T. Joseph Lazio, Namir E. Kassim, Michael E. Nord

Faculty Articles

New low-frequency 74 and 330 MHz observations of the Galactic center (GC) region reveal the presence of a large-scale (6° × 2°) diffuse source of nonthermal synchrotron emission. A minimum-energy analysis of this emission yields a total energy of ~(phi4/7f3/7) × 1052 ergs and a magnetic field strength of ~6(phi/f)2/7 μG (where phi is the proton to electron energy ratio and f is the filling factor of the synchrotron emitting gas). The equipartition particle energy density is 1.2(phi/f)2/7 eV cm-3, a value consistent with cosmic-ray data. However, the derived magnetic field is several orders of magnitude below the 1 mG …

Collinear And Soft Resummation In The Large-X Limit, Nikolaos Kidonakis

Faculty Articles

I discuss general unified formulas for resumming collinear and soft contributions to QCD hard scattering cross sections at laxge x. Expansions of the resummed cross sections to next-to-next-to-next-to-leading order are also shown along with applications of the formalism.

Phishing Warden: Enhancing Content-Triggered Trust Negotiation To Prevent Phishing Attacks, James Presley Henshaw

Theses and Dissertations

Phishing attacks are spam e-mails that attempt to fool recipients into divulging their identifying information by posing as a message from a well known company and using that company's branding and logos. It is estimated that phishing attacks have cost bank and credit card customers $1.2 billion in the U.S. in 2003. Previous work, content-triggered trust negotiation (CTTN), filters Internet traffic for sensitive data, and prevents a user from disclosing sensitive information to an un-trusted server. However, existing CTTN implementations are vulnerable to client-side scripts that obfuscate any data the client's browser sends to the web server in order to …

Erratum: "Environmental Swap Energy And Role Of Configurational Entropy In Transfer Of Small Molecules From Water Into Alkanes", Pavel Smejtek, Robert Campbell Word

Physics Faculty Publications and Presentations

Presents correction to an article related to configurational entropy in transfer of small molecules from water into alkanes, published in the 2005 issue of "The Journal Chemical Physics" and is available online at: http://archives.pdx.edu/ds/psu/8364

Explicit Building Block Multiobjective Evolutionary Computation: Methods And Applications, Richard O. Day

Theses and Dissertations

This dissertation presents principles, techniques, and performance of evolutionary computation optimization methods. Concentration is on concepts, design formulation, and prescription for multiobjective problem solving and explicit building block (BB) multiobjective evolutionary algorithms (MOEAs). Current state-of-the-art explicit BB MOEAs are addressed in the innovative design, execution, and testing of a new multiobjective explicit BB MOEA. Evolutionary computation concepts examined are algorithm convergence, population diversity and sizing, genotype and phenotype partitioning, archiving, BB concepts, parallel evolutionary algorithm (EA) models, robustness, visualization of evolutionary process, and performance in terms of effectiveness and efficiency. The main result of this research is the development of …

Photoinduced One-Electron Reduction Of Alkyl Halides By Dirhodium(Ii,Ii) Tetraformamidinates And A Related Complex With Visible Light, Dean Johnston

Chemistry Faculty Scholarship

Various substituted dirhodium tetraformamidinate complexes, Rh(2)(R-form)(4) (R = p-CF(3), p-Cl, p-OCH(3), m-OCH(3); form = N,N'-diphenylformamidinate), and the new complex Rh(2)(tpgu)(4) (tpgu = 1,2,3-triphenylguanidinate) have been investigated as potential agents for the photoremediation of saturated halogenated aliphatic compounds, RX (R = alkyl group). The synthesis and characterization of the complexes is reported, and the crystal structure of Rh(2)(tpgu)(4) is presented. The lowest energy transition of the complexes is observed at approximately 870 nm and the complexes react with alkyl chlorides and alkyl bromides under low energy irradiation (lambda(irr) > or = 795 nm), but not when kept in the dark. The metal-containing …

Remote Estimation Of Crop Health [Abstract], Anatoly A. Gitelson, Andrés Viña, Donald C. Rundquist

School of Natural Resources: Faculty Publications

First sentence of abstract: In this paper we discuss developed techniques to remotely assess the fraction of photosynthetically active radiation absorbed by green vegetation [fAPAR-GREEN=fAPAR*(green LAI/total LAI)], fractional green vegetation cover (FGVC), green leaf area index (GLAI) green leaf biomass (GLB) and net ecosystem carbon dioxide exchange (NEE) in crops.