Physical Sciences and Mathematics Commons^™

Resources For Undergraduate User Interface Implementation Courses, Charles J. Welty Ms

Faculty Publications

It has been estimated that 48% of the code and 50% of the implementation time required in new applications are directly related to the user interface (Myers and Rosson, 1992). Our research shows that most undergraduate courses that consider graphical user interfaces (GUIs) have no implementation component. Most undergraduate programs (85%) that include GUI implementation are offered at the Doctoral II Carnegie classification or above. Appropriate Web and print references and other materials given in this paper will help faculty at smaller institutions offer such courses.

110th Session Iowa Academy Of Science Awards Luncheon, April 24, 1998, Iowa Academy Of Science

Iowa Academy of Science Documents

Program:

--- Introductions - Richard Lampe, President
--- Recognition of students participating in various statewide activities - Ed Rezabek, Chair, Student Programs Committee
--- Presentation of scholarship winners and 1999 AJAS representatives - Peggy Tilgner, Director, Iowa Junior Academy of Science
--- Presentation of Excellence in Science Teaching Awards - Peg Steffen, Director, ESTA Program

Iowa Academy Of Science President's Banquet [110th Session], Iowa Academy Of Science

Iowa Academy of Science Documents

Program:

Introductions
Awards:
Distinguished Fellow: Richard W. Arnold
Distinguished Service: Paul E. Rider
Distinguished Iowa Science Teacher: Charles D. Drewes
President's Address - Richard Lampe
Response - James Christiansen, President-Elect
General Sessions II - Bob Becker, "Chemical Demonstrations to Knock Your Socks Off"

Program Abstracts, 110th Session, Iowa Academy Of Science, April 24-25, 1998, Iowa Academy Of Science

Iowa Academy of Science Documents

Presentation abstracts from the annual meeting of the Iowa Academy of Science

The Annual Meeting Of The Iowa Academy Of Science April 24-25, 1998 [Program, 110th Meeting], Iowa Academy Of Science

Iowa Academy of Science Documents

Contents:

Program Summary -- 3
General Session Speakers -- 5
Awards -- 8
Symposia Programs -- 9
Poster Session -- 10
Map -- Centerfold
Section Programs/Special Sessions -- 14
Agricultural Sciences -- 14
Anthropology -- 15
Botany -- 15
Biology: Cellular, Molecular, & Microbiology -- 16
Chemical Education -- 17
Chemistry: Inorganic, Analytical & Physical -- 17
Conservation -- 18
Engineering -- 19
Geology -- 23
Physics -- 24
Physiology -- 25
Psychology/Linguistics -- 27
Science Teaching -- 28
Zoology -- 28
Local Arrangements Committee -- 29
IAS Officers & Directors -- 29
IAS Annual Meeting Committee -- 30
Future …

Comparative Developmental Toxicity Of Planar Polychlorinated Biphenyl Congeners In Chickens, American Kestrels, And Common Terns, David J. Hoffman, Mark J. Melancon, Patrice N. Klein, John D. Eisemann, James W. Spann

United States Department of Agriculture Wildlife Services: Staff Publications

The effects of polychlorinated biphenyl (PCB) congeners, PCB 126 (3,3′, 4,4′, 5-pentaCB) and PCB 77 (3,3′4,4′-tetraCB), were examined in chicken (Gallus gallus), American kestrel (Falco sparverius), and common tern (Sterna hirundo) embryos through hatching, following air cell injections on day 4. PCB 126 caused malformations and edema in chickens starting at 0.3 ppb, in kestrels at 2.3 to 23 ppb, but in terns only at levels affecting hatching success (44 ppb). Extent of edema was most severe in chickens and least in terns. Defects of the beak were common in all species but with …

Cattle Guards Reduce White-Tailed Deer Crossings Through Fence Openings, J. L. Belant, T. W. Seamans, C.P. Dwyer

United States Department of Agriculture Wildlife Services: Staff Publications

In response to increased white-tailed deer (Odocoileus virginianus) encroachment on airports, we evaluated the effectiveness of cattle guards as deer exclusion devices. We conducted three experiments in a 2200 ha fenced facility in northern Ohio with high (91/km²) deer densities during 1994 ± 1995. In each experiment, we monitored deer crossings at two or three cattle guards (4.6[L] x 3[W]x 0.5 or 1.0[D] m) constructed at fence openings for 2 weeks pre- and post-installation. For each experiment, the mean daily number of deer crossings after installation of cattle guards was reduced (P < 0.01) by > 88% compared with …

Predation On Atlantic Salmon Smolts By Striped Bass After Dam Passage, Bradley F. Blackwell, Francis Juanes

United States Department of Agriculture Wildlife Services: Staff Publications

We documented predation on smolts of Atlantic salmon Salmo salar by striped bass Morone saxatilis foraging in the tailrace of the Essex Dam on the Merrimack River, Lawrence, Massachusetts, and assessed factors that may affect smolt susceptibility to predation. During 6 d of diurnal angling from 6 to 28 May, we captured 212 striped bass, 41 of which contained prey remains. More than 48% of striped bass that contained prey had consumed smolts. Atlantic salmon smolts composed more than 80% of the total mass of prey remains recovered and included both individuals of stocked-fry and stocked-smolt origin. Based on information …

Annual And Daily Meteorological Cycles At High Altitude On A Tropical Mountain, Douglas R. Hardy, Mathias Vuille, Carsten Braun, Frank Keimig, Raymond S. Bradley

Raymond S Bradley

An automated weather station was installed in October 1996 at the summit of Nevado Sajama, located in the western Andean Cordillera of Bolivia (6542 m, 18°06¢S, 68°53¢W). Meteorological conditions on the mountain are being observed to improve the calibration of geochemical variations within tropical ice cores. This article documents the design and operation of the station and presents a discussion of measurements made through the first annual cycle. Variables analyzed include pressure, incoming solar radiation, air temperature, humidity, wind, and snow accumulation. Large diurnal fluctuations were recorded in most variables, which is not unexpected given the location at 18°S; the …

An Implementation Of The Vesta Parallel File System Api On The Galley Parallel File System, Matthew P. Carter, David Kotz

Computer Science Technical Reports

To demonstrate the flexibility of the Galley parallel file system and to analyze the efficiency and flexibility of the Vesta parallel file system interface, we implemented Vesta's application-programming interface on top of Galley. We implemented the Vesta interface using Galley's file-access methods, whose design arose from extensive testing and characterization of the I/O requirements of scientific applications for high-performance multiprocessors. We used a parallel CPU, parallel I/O, out-of-core matrix-multiplication application to test the Vesta interface in both its ability to specify data access patterns and in its run-time efficiency. In spite of its powerful ability to specify the distribution of …

Problems In Harmonic Function Theory, Ronald A. Walker

Honors Theses

Harmonic Function Theory is a field of differential mathematics that has both many theoretical constructs and physical connections, as well as its store of classical problems.

One such problem is the Dirichlet Problem. While the proof of the existence of a solution is well-founded on basic theory, and general methods for polynomial solutions have been well studied, much ground is still yet to be overturned. In this paper we focus on the examination, properties and computation methods and limitations, of solutions for rational boundary functions.

Another area that we shall study is the properties and generalizations of the zero sets …

Anthraquinone Protects Rice Seed From Birds, Michael L. Avery, John S. Humphrey, Thomas M. Primus, David G. Decker, Arlene P. Mcgrane

United States Department of Agriculture Wildlife Services: Staff Publications

Application of bird-repellent chemicals to seed prior to planting is one possible approach to reducing bird damage to rice. Anthraquinone is a promising seed treatment compound, and in this paper we describe a sequence of tests evaluating a formulated commercial anthraquinone product. In l-cup cage tests, rice consumption by individual male red-winged blackbirds (Agelaius phoeniceus) and female boat-tailed grackles (Quiscalus major) was reduced 64-93% by 0.5 and 1.0% (g/g) anthraquinone treatments. Daily rice consumption by single male boat-tailed grackles tested in large enclosures was reduced from > 14 g in pretreatment to < 1 g by a 1.0% treatment. One of five test birds ate nothing during a 1 day post-treatment session. In a 7 day trial within a 0.2 ha flight pen, a group of four male grackles consumed 1.3% of anthraquinone-treated rice seed compared to 84.1% of sorghum, a nonpreferred alternate food. At two study sites in southwestern Louisiana, loss of rice sprouts in 2 ha plots sown with anthraquinone-treated seed was 0 and 12% compared to losses of 33% and 98% in nearby untreated plots. The formulation performed well at every stage of testing, and further development of anthraquinone products for bird-damage management is warranted.

X-Ray Spectroscopic Mapping Of Three Unusual Active Galaxies (Ngc 4258, Ngc 1097, And Ngc 1068), Jeremy Kotter '98

Honors Projects

One enigmatic class of objects whose structures are interesting and only recently explored are active galactic nuclei (AGN). These are galaxies in which massive black holes sit at the center and accrete matter. The term "active" refers to energetic processes which are not directly attributable to stars and which occur in the innermost portions of galaxies. Astrophysicists have developed general descriptions of AGN, but details about these objects remain incomplete. Notably, the thermal and ionization structures of AGN accretion disks and the geometries of the circum-source clouds which surround the black hole and comprise an important portion of the energy …

Ua12/2/1 Special Storm Coverage, Wku Student Affairs

WKU Archives Records

Special hail storm coverage edition of the College Heights Herald:

• Batcheldor, Matt. Campus Damage Exceeds $4 Million; No One Hurt – Hail, Flooding
• Moore, Leigh. Downing University Center Roof Destroyed; Food Services Continue – Hail, Dining Services
• Batcheldor, Matt. Weather or Not . . . Hail, Flooding

White Dwarf Cosmochronometry. I. Monte Carlo Simulations Of Proper-Motion And Magnitude-Limited Samples Using Schmidt's 1/Vmax Estimator, Matt A. Wood, Terry D. Oswalt

Aerospace, Physics, and Space Science Faculty Publications

Observationally, white dwarf stars are a remarkably homogeneous class with a minimum observed Teff ∼ 4000 K. Theoretically, the physics that determines their cooling timescales is relatively more straightforward than that which determines main-sequence evolutionary timescales. As a result, the white dwarf luminosity function has for the last decade been used as a probe of the age and star formation rate of the Galactic disk, providing an estimated local disk age of ∼ 10 Gyr with estimated total uncertainties of roughly 20%. A long-standing criticism of the technique is that the reality of the reported downturn in the luminosity function …

White Dwarf Cosmochronometry. I. Monte Carlo Simulations Of Proper-Motion ̶ And Magnitude-Limited Samples Using Schmidt’S 1/Vmax Estimator, Matt A. Wood, Terry D. Oswalt

Publications

Observationally, white dwarf stars are a remarkably homogeneous class with a minimum observed T_eff ~4000 K. Theoretically, the physics that determines their cooling timescales is relatively more straightforward than that which determines main-sequence evolutionary timescales. As a result, the white dwarf luminosity function has for the last decade been used as a probe of the age and star formation rate of the Galactic disk, providing an estimated local disk age of ~10 Gyr with estimated total uncertainties of roughly 20%. A long-standing criticism of the technique is that the reality of the reported downturn in the luminosity function (LF) …

Pg 1002+506: A Be Star Apparently At Z > +10 Kiloparsecs, F. A. Ringwald, W. R. J. Rolleston, R. A. Saffer, John R. Thorstensen

Dartmouth Scholarship

PG 1002+506 is found to be a Be star, one of three found so far by the Palomar-Green survey. Its spectrum is classified as a B5 ± 1 Ve, with T_eff = 14,900 ± 1200, log g = 4.2 ± 0.2, and v sin i = 340 ± 50 km s^-1. At b = +51°, its height above the Galactic plane would therefore be z = +10.8 kpc, putting this apparently young, rapidly rotating star well into the Galactic halo. Its heliocentric radial velocity is found to be -2 ± 15 km s^-1, consistent with …

Spectroscopic Probes Of Bonded Interfaces, Mark Anderson, C. Douglas Taylor, Cynthia Kraft

Mark R. Anderson

No abstract is currently available.

Ua52/1 Hail Storm Memories, Wku Archives

WKU Archives Records

Memories of WKU faculty, staff, alumni and the general public regarding the 1988 hail storm solicited by WKU Archives.

Trends. An Encryption Paradox: Cracking The Groupe Speciale Mobile Standard (Gsm), Ibpp Editor

International Bulletin of Political Psychology

The author discusses the vulnerability of encryption methods used with today's modern technology.

Classification Of Hereditary Matrices, Jim Agler, J. W. Helton, Mark Stankus

Mathematics

A classical approach used to obtain basic facts in the theory of square matrices involves an analysis of the relationship between polynomials p in one variable and square matrices T such that p(T) = 0. We consider matrices and operators which satisfy a different type of polynomial constraint. Let H be a complex Hilbert space, T be a bounded linear transformation of H, T* be the adjoint of T, and C[x, y] be the algebra of polynomials in x and y with complex coefficients. For a polynomial p E C[x, y] in …

Relationship Between Continuous Aerosol Measurements And Firn Core Chemistry Over A 10-Year Period At The South Pole, M H. Bergin, E A. Meyerson, Jack E. Dibb, Paul A. Mayewski

Earth Sciences

Before ice core chemistry can be used to estimate past atmospheric chemistry it is necessary to establish an unambiguous link between concentrations of chemical species in the air and snow. For the first time a continuous long-term record of aerosol properties (aerosol light scattering coefficient, σ_sp, and Ångström exponent, å) at the South Pole are compared with the chemical record from a high resolution firn core (∼10 samples per year) covering the period from 1981 to 1991. Seasonal signals in å, associated with winter minima due to coarse mode seasalt and summer maxima due to accumulation mode sulfate …

Inventory For Endangered, Threatened And Rare Plant And Animal Species Within The Floodplain Corridor Of The Middle Loup River Basin In Nebraska, Michael I. Fritz, Gerry Steinauer

Nebraska Game and Parks Commission: White Papers, Conference Presentations, and Manuscripts

This survey was conducted by Nebraska Natural Heritage Program of the Nebraska Game and Parks Commission with funding received from the U.S. Department of the Interior, Bureau of Reclamation, Grand Island office. This agreement was entered into on April 16, 1996. The objective of the agreement was to conduct a survey of a portion of the Loup River basin floodplain corridor for rare plant communities and plant and animal species. This is the final report of that survey. This report includes not only data collected directly as a result of field survey work associated with the project but also previous …

Watercraft Impact On The Lake Mead National Recreational Area, Terence Lino

UNLV Theses, Dissertations, Professional Papers, and Capstones

No abstract provided.

The Electrochemistry Of Fullerenes And Metallofullerenes, Mark Anderson

Mark R. Anderson

No abstract is available at this time.

Evidence For A Scalar Kappa(900) Resonance In Pi-K Scattering, Joseph Schechter, Deirdre Black, Amir H. Fariborz, Francesco Sannino

Physics - All Scholarship

Motivated by the 1/N_c\ expansion, we study a simple model in which the pi-K scattering amplitude is the sum of a current-algebra contact term and resonance pole exchanges. This phenomenological model is crossing symmetric and, when a putative light strange scalar meson, kappa, is included, satisfies the unitarity bounds to well above 1 GeV. The model also features chiral dynamics, vector meson dominance and appropriate interference between the established scalar K*(1430) resonance and its predicted background. We briefly discuss the physical significance of the results and directions for further work.

Intelligent Assistance For Human Supervisory Control Of Multiple Robots, Robin R. Murphy, Erika Rogers

Computer Science and Software Engineering

This paper reviews on-going collaborative efforts between the Colorado School of Mines and Clark-Atlanta University in cooperative assistance for coordination and control of multiple vehicles. It reports on progress in developing an intelligent assistance agent (IAA) for aiding a human operator in diagnosing problems and generating recovery strategies in remote ground robots. The current work has focused on the identification and incorporation of categories of additional information from multiple robots and other agents. These categories are: mission-related sources, such as peer robots working nearby; facility-related sources, such as security cameras; and opportunistically available agents, such as overhead satellites or humans …

Measurement Of B(D0 → K-Π+) Using Partial Reconstruction Of B̅ → D*+Xℓ- Ν̅, M. Artuso, Kenneth A. Bloom, Cleo Collaboration

Kenneth Bloom Publications

We present a measurement of the absolute branching fraction for D⁰ → K^-π⁺ using the reconstruction of the decay chain B̅ → D*⁺Xℓ^- ν̅ where only the lepton and the low-momentum pion from the D*⁺ are detected. With data collected by the CLEO II detector at the Cornell Electron Storage Ring, we have determined Ɓ(D⁰ → K^-π⁺)= [3.81 ± 0.15(stat) ± 0.16(syst)]%.

Friction Anisotropy And Asymmetry Of A Compliant Monolayer Induced By A Small Molecular Tilt, Nancy Burnham, M Liley, D. Gourdon, Dimitrios Stamou, U Meseth, T Fischer, C Lautz, H Stahlberg, H Vogel, C Duschl

Nancy A. Burnham

Lateral force microscopy in the wearless regime was used to study the friction behavior of a lipid monolayer on mica. In the monolayer, condensed domains with long-range orientational order of the lipid molecules were present. The domains revealed unexpectedly strong friction anisotropies and non-negligible friction asymmetries. The angular dependency of these effects correlated well with the tilt direction of the alkyl chains of the monolayer, as determined by electron diffraction and Brewster angle microscopy. The molecular tilt causing these frictional effects was less than 15 degrees, demonstrating that even small molecular tilts can make a major contribution to friction.

Studies Of Molecular Priming For Adhesive Interactions, C, Douglas Taylor, Mark Anderson

Mark R. Anderson

No abstract is currently available.