Physical Sciences and Mathematics Commons^™

Rudy Rucker's Spirograph, Rudy Rucker

SWITCH

This article showcases the main aspects of how this spirograph was to be used. The spirograph is part of Rudy Rucker’s quest for the gnarl. The main page shows how to download this spirograph and how to utilize the program to its full potential.

The Emergence Of Alife, P.D. Quick

SWITCH

Interview with Kenneth E. Rinaldo, an artist who is on the Board of Directors of YLEM. Within this interview, many topics are covered, including artificial life, simulations, the meaning of art, spirituality, and television. The interview also goes into the personal work and life of Rinaldo, whose focus includes many of these subjects. Some of the more specific subjects include intelligence without consciousness, the combination of science and art, and Ken Rinaldo’s The Flock, an interactive A-Life sculpture.

Critical Point For The Blue-Phase-Iii-Isotropic Phase Transition In Chiral Liquid Crystals, Z. Kutnjak, C. W. Garland, Colin G. Schatz , '97, Peter J. Collings, C. J. Booth, J. W. Goodby

Physics & Astronomy Faculty Works

The highly chiral compound S,S-4 ''-(methylbutyl)phenyl-4'-(methylbutyl) biphenyl carboxylate (S,S-MBBPC) undergoes a continuous supercritical evolution from the isotropic (I) phase to the third blue phase (BPI III). Mixtures of S,S-MBBPC and its racemate have been studied with high-resolution calorimetry capable of quantitative latent heat determinations and with optical activity measurements. Both experiments indicate that the first-order BP III-I transition line ends at a critical point when the chiral mole fraction X(c) similar or equal to 0.45. Analysis of C-p and optical activity data for the near-critical mixture with X = 0.45 indicates mean-field behavior instead of the theoretically predicted Ising fluctuation …

Evaluation Of The Delta Waterfowl Foundation's Adopt-A-Pothole Project, Daniel S. Vice

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The establishment of dense nesting cover (DNC) for breeding waterfowl is a common management practice on large blocks of former agricultural land. The Delta Waterfowl Foundation's Adopt-A-Pothole (AAP) program establishes DNC adjacent to small wetland complexes to increase waterfowl use and productivity. I evaluated waterfowl use and nesting success on AAP lease sites in southwestern Manitoba in 993- 94 and compared the relative amount and success of overwater and upland nesting by mallards using these sites.

Diving duck breeding pair densities were higher on treatment sites in both 1993 and 1994 (P = 0.02 and 0.02, respectively). Dabbling duck …

Simulations Of Electrostatic Modes Of Non-Neutral Plasmas With Small Aspect Ratio In A Penning Trap, Grant W. Mason, Ross L. Spencer, Jonathan A. Bennett

Faculty Publications

The dependence on induced charge, experimental geometry, and temperature of electrostatic modes in very low aspect ratio non-neutral plasmas in a Penning trap is considered. The modes are of interest as non-destructive diagnostics of the shape of the plasmas. These investigations include equilibrium calculations of plasma shapes and profiles at finite temperature and particle-in-cell simulations of axisymmetric modes. The results of the simulations are compared to the zero-temperature theory by Dubin [Phys. Rev. Lett. 66, 2076 (1991)] taken to first-order in the aspect ratio and to experimental measurements by Weimer et al. [Phys. Rev. A 49, 3842 (1994)]. In general, …

Extraction, Recovery And Separation Of Some Organic And Inorganic Pollutants By Polyurethane Foams And Other Extracting Agents, Mahboob Hassan Saleh

Theses

Many substances pollute the marine and air environments but non-biodegradable compounds are the most dangerous. Heavy metals and most of the pesticides are known for their high toxicity. Mercury and lead in particular tend to accumulate in liver and kidney and inhibit the biosynthesis of heme protein because of their affinity for thiol and phosphate containing ligands. Thus, it affects the permeability of the membranes of kidney, liver and brain cells. Soluble inorganic mercury (II) species can be transformed into methylmercury under aerobic conditions by the actions of microorganisms. The target organ of methylmercury in humans is the brain where …

Identification Of Optimal Locations For Sampling Ground Water For Pesticides In The Mississippi Delta Region Of Eastern Arkansas, H. S. Lin, H. D. Scott, J. M. Mckimmey

Technical Reports

Concerns about the presence of pesticides in the Mississippi River Valley alluvial aquifer in the Arkansas Delta have generated the need to develop a map of ground water vulnerability for this region comprised of approximately 10 million acres. Based on the availability of digital data and the scale of this study. we used a modified Pesticide DRASTIC model in a GRASS GIS environment to identify areas that were physically more sensitive to pesticide contamination than other areas within the Delta. Spatial distribution of pesticide loading was estimated from pesticide application rates in different crops and crop distribution map interpreted from …

The Use Of Non-Commutative Algebra In Cryptographically Secure Pseudo-Random Number Generators, Brian M. Mckeever

Honors Theses

This thesis begins with a general overview of pseudo-random number generators and some of their applications. This thesis then describes their applications to cryptography, and some additional requirements imposed by cryptography. This thesis then provides an introduction to the ring of quaternions, and discusses how they can be included in pseudo-random number generators. Finally, this thesis provides a description of the performance of these generators.

Data Dictionary, Coastal Land And Groundwater For Horticulture From Gingin To Augusta, Werner Runge, Dennis Van Gool

Agriculture reports

This report summaries the primary digital data which was used to analyse the land and groundwater resources along the coastal strip between the shires of Gingin adn Augusta - Margaret River.

A Mechanistic Management-Oriented Water Quality Model For Tampa Bay Final Report, Asci Corporation, James L. Martin, Pei F. Wang, Tim Wool

Reports

This report summarizes the parameterization, calibration, testing, and an initial application of the mechanistic water quality model.

History Of Fermat's Last Theorem, Amanda Brown

Undergraduate Honors Capstone Projects

Around 1637, Pierre de Fermat made a now-famous mathematical conjecture. However, Fermat's conjecture neither began nor ended with him. Fermat's last theorem, as the conjecture is called, has roots approximately 3600 years old. The proof of the theorem was not realized until 1994, over 350 years after it was proposed by Fermat.

Spatial And Temporal Dynamics Of Plant Populations In Salt-Desert Shrub Vegetation Grazed By Sheep, Humberto Alzérreca-Angelo

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

I studied the effect of moderate sheep grazing on a shadscale plant community at the Desert Experimental Range, southwestern Utah, USA, using a 61-yr data set with two grazing treatments (yes vs. no), two seasons (spring vs. winter), and two soil types (loamy-skeletal vs. coarse-loamy). I studied precipitation, total species cover, annuals, shrub survival, seedling recruitment, plant succession, and plant spatial relationships.

Precipitation showed high variability (CV=31%) masking on short-term cycles, resulting in study intervals with average (1935-58), dry (1958-69), driest (1969-75), and wet (1980-94[5]) regimes. Total cover in both grazed and ungrazed pastures increased between 1935 and 1975 before …

Hydrochemical Definition Of Ground Water And Surface Water, With An Emphasis On The Origin Of The Ground-Water Salinity In Southern Juab Valley, Juab County, Utah, Heidi K. Hadley

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

As part of a U.S. Geological Survey study in Juab Valley in central Utah from 1991 to 1994, the chemistry of ground - and surface -water samples was determined. Total dissolved solids in the ground water of southern Juab Valley have historically been higher, in general, than ground water in other areas of Utah. Total dissolved solids for ground-water samples from this study ranged from 623 to 3,980 milligrams/liter. High-sulfate chemical data of previous studies suggested that the major source of ground-water salinity is the dissolution of gypsum (hydrous calcium sulfate ) from the Arapien Shale. Sulfur-34 to sulfur-32 isotopic …

A Study Of The Gradient Drift Instability In The High-Latitude Ionosphere Using The Utah State University Time Dependent Ionospheric Model, Mahesh Subramanium

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Research over the years has established that the Gradient Drift Instability process causes small-scale irregularities, mostly along the edges of the high-latitude polar cap patches. Studying these irregularities will help in the development of a Global Scale Ionospheric model, which is a central part of a global space weather forecast system. Much theoretical work has been done with varying degrees of complexity to study this instability in the high latitude patches.

In this work we have used the Utah State University Time Dependent Ionospheric Model to model the high-latitude patches, calculate the growth rate of the instability, and perform a …

Second Growth Forest As Potential Marten Habitat In Western Newfoundland: An Examination Of Forest Habitat Structure And Microtine Abundance, Brian R. Sturtevant

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The American marten (Martes americana) is associated with large tracts of relatively undisturbed, mature coniferous forests. I examined coarse woody debris (CWD) structure and small mammal abundance with respect to forest age and stem structure within second-growth forests, in comparison with old-growth stands in western Newfoundland. Results suggest that a critical change in marten habitat quality may occur at stand senescence, due to decreased tree competition, more complex subcanopy structure, and increased meadow vole (Microtus pennsylvanicus) abundance.

Analysis of stem structure within a chronosequence of 19 second-growth stands indicated high intertree competition, with dense canopy closure …

Visitor Use Of Interpretive Facilities At Fossil Butte National Monument, Wyoming, Rizal Bukhari

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Visitors expect to a gain high-quality outdoor experiences at any recreation site they visit. In order to support that effort, most recreation managers utilize interpretive facilities to educate and inform visitors about the site. It is important for interpretive managers to be aware of what kind of interpretive media could best be used in a given setting for the type of visitor anticipated. To accomplish this goal, it is necessary to understand visitors' behavior and incorporate that understanding into the interpretive planning process.

This study looks at visitor use of interpretive facilities provided at Fossil Butte National Monument, Wyoming. The …

Center For Sustainable Agricultural Systems Newsletter, May/June 1996

Center for Sustainable Agricultural Systems: Newsletters (1993-2000)

Contents:

New CSAS Web Page

Field Day On Specialty Crops

Windbreak Evaluation Software

Integrated Farm Update: Cover Crop Research

Teaching Sustainability at a Distance

President's Task Force Says U.S. Ag Must Be Sustainable

Exchange Program for Organic Farmers

Agroforestry for Farms, Ranches, and Communities

Windbreaks for Corn?

Characterization Of Spatial And Temporal Anisotropy In Turbulent Mixing Layers Using Optical Techniques, Patrick J. Gardner

Theses and Dissertations

The optical aberrations induced by mixing layers of dissimilar gases are recorded and analyzed in order to characterize the spatial and temporal properties of the flow. Laser light was propagated through a mixing layer of Helium and Nitrogen gas, having velocities of 8.5 m/sec and 1.5 m/sec, respectively. The light was propagated in a direction perpendicular to the plane of the mixing layer. The mixing layer was evaluated in two experimental regimes: free turbulent mixing, where the mixing layer spreads into the surrounding air; and channel flow, where the mixing layer is confined to a rectangular channel. The optical perturbations …

บทบรรณาธิการ

Thai Environment

No abstract provided.

กิจกรรมสิ่งแวดล้อม

Thai Environment

No abstract provided.

บทสรุปโครงการปลูกป่าถาวร เฉลิมพระเกียรติทรงครองราชย์ปีที่ 50, มณฑล จำเริญพฤกษ์

Thai Environment

No abstract provided.

การจัดการอนุรักษ์ธรรมชาติและสิ่งแวดล้อม, ทวีวงศ์ ศรีบุรี

Thai Environment

No abstract provided.

การเกิดและดับของตลาดน้ำวัดไทร ผลพวงของการเปลี่ยนแปลงที่เกิดจากการพัฒนา, สุจิตรา ชโลดม

Thai Environment

No abstract provided.

มัจจุราชควันบุหรี่, สิริกร เกรอต

Thai Environment

No abstract provided.

องค์กรชุมชนกับการจัดการสิ่งแวดล้อม (ตอนที่ 2), ประสาน ตังสิกบุตร

Thai Environment

No abstract provided.

น้ำเปลี่ยนสี, นรินทร์ ธารัตถพันธุ์

Thai Environment

No abstract provided.

สัมภาษณ์พิเศษ : ดร.สรณรัชฎ์ กาญจนะวณิชย์

Thai Environment

No abstract provided.

แนะนำโครงการใหม่ : โครงการที่เกี่ยวกับการสำรวจปัญหาและการควบคุมฝุ่นละอองสำหรับกรุงเทพมหานคร

Thai Environment

No abstract provided.

ศัพท์น่ารู้

Thai Environment

No abstract provided.

พิษภัยจากอาหารในช่วงฤดูร้อน, เบญจภรณ์ รุ่งพิทักษ์ไชย

Thai Environment

No abstract provided.