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The Effect Of Human Activity On The Middle Course Of The Tualatin River, Oregon, Lolita M. Carter

Dissertations and Theses

A diurnal study of biological, chemical, and physical parameters was made on the middle course of the, Tualatin River, which drains a 1840 km² (711 mi²) basin adjacent to metropolitan Portland, Oregon. This portion of the river lies along land in transition of use from rural agriculture to highly urbanized development.

There is no nutrient loading of the river from farming practices because there was no return of water from summer, sprinkler irrigation of commercial crops. However, irrigation significantly reduces the volume of water in the river in the summers.

Effluents from sewage treatment plants flowing into …

A Satellite Study Of The High Energy Proton Environment Under The Radiation Belt, Kailash Chandra Dhingra

Physics & Astronomy ETDs

Proton data outside of the South Atlantic Radiation anomaly (in the regions where h_min < 0) from the University of New Mexico High Energy Neutron and Proton Detector aboard OSO-6 satellite were analyzed in the present work. The detector was useful in the energy range from 75-145 Mev and the data were obtained during the period from August 1969 to January 1971. The altitude of the satellite varied from about 480 Km to 580 Km. Since the observed proton flux resulted from different source mechanisms a procedure was developed that allowed us to compute and separate the contributions made by different mechanisms in the observed protons. New evidence was derived from the study of the Down-Up asymmetry both along the field direction and the zenith of the look direction (ZAP angle) which substantiated the hypothesis that either one or both of the processes of the radial and the pitch angle diffusion play active roles in the origin and the distributions of the protons in the inner radiation belt. It was argued that processes drive the trapped protons in the radiation belt into the regions where stable trapping is not possible and thus contribute to the observed protons in these regions. We were further able to compute the total diffusing flux; however, it was assumed that both the Splash and the Re-entrant albedo proton fluxes were equal. Since this assumption was not very accurate, an incorrect estimation of the diffusing proton flux might have resulted. In addition to the above, the flux and the energy spectrum of the albedo protons were derived at three different regions. These were then compared with the results of other investigators. Discrepencies in both the flux and the energy spectrum were observed. Our flux value of 1.05 protons/m² -sec-ster-Mev for the Re-entrant albedo at an energy of 85 Mev in the region where L = 2.5 was about a factor of two and a half higher than estimated by Ray (1967). No west-east asymmetry was observed in the true proton flux (proton flux obtained by subtracting the background contamination from the observed proton flux), within the limits of the experimental error. Since such an asymmetry was expected if we assume that the albedo protons alone constitute the true protons, it was concluded …

Estimation Of Growth Curves By Least Square Splines, Dorothy Rybaczyk Pathak

Mathematics & Statistics ETDs

The primary object of this dissertation is to present some con­tributions to the theory of estimation of growth curves by least square splines in the presence of unknown unequal variances. The theoretical developments rest heavily on the standard least square theory and the theory of polynomial spline functions. A modifica­tion of the Aitken procedure of weighted least squares is used to estimate regression parameters. It is shown that this modification of the Aitken procedure does not unduly influence the nice least square properties of estimators so obtained; the estimators re­ main unbiased, consistent and asymptotically efficient.

The techniques developed in …

Some Results On The Weight Structure Of Cyclic Codes Of Composite Length, Carlos R.P. Hartmann, T. Y. Hwang

Electrical Engineering and Computer Science - Technical Reports

In this work we investigate the weight structure of cyclic codes of composite length n = n1n2, where n1 and n2 are relatively prime. The actual minimum distances of some classes of binary cyclic codes of composite length are derived. For other classes new lower bounds on the minimum distance are obtained. These new lower bounds improve on the BCH bound for a considerable number of binary cyclic codes.

Seasonal And Spatial Variation In Primary Productivity In Boulder Basin, Lake Mead, Clark County, Nevada, Isamu Aoki

Publications (WR)

The ¹⁴C light and dark bottle technique for measurement of primary production was utilized as a means of assessing the amount of inorganic carbon being converted Into organic form by the photosynthesis of phytoplankton populations In the Boulder Basin of Lake Mead.

Spatial and time series changes of productivity levels observed at eight sampling locations within Boulder Basin Indicate that the Influence of treated municipal arts' industrial effluent flowing into Les Vegas Bay is contributing high levels of available nutrients at Las Vegas Wash Inlet to cause productivity to approximate those levels associated with polluted waters.

Productivity levels at …

Binary Nucleation. Ii. Time Lags, Gerald Wilemski

Physics Faculty Research & Creative Works

The role of the time lag needed to attain steady state nucleation in binary vapors is discussed. Under appropriate conditions it is possible to obtain both a large predicted rate of binary nucleation and a large time lag. In this circumstance, homogeneous nucleation of the more concentrated component may be the predominant process. It is of obvious importance to the experimentalist to differentiate between these possibilities. Approximate formulas for the time lags are developed, and representative calculations for the ethanol-water system are reported.

Binary Nucleation. I. Theory Applied To Water-Ethanol Vapors, Gerald Wilemski

Physics Faculty Research & Creative Works

A quantitative study of nucleation in vapor mixtures of ethanol and water near 273°C is presented. First, Reiss' theory of binary nucleation is reexamined. The theory is modified slightly in order to yield the proper limit for homogeneous nucleation in a one-component system. Moreover, a corrected expression for the equilibrium concentration of mixed clusters is derived. Calculations of the critical vapor activities needed to produce a visible condensate are presented and compared with the results of Flood's cloud chamber experiments. The agreement is only fair, but qualitative accord is found.

Studies In Transition Metal Chemistry, Steven David Brown

Dissertations and Theses

The electronic and vibrational spectra of liquid chromium pentafluoride have been investigated. They were found to be consistent with a d¹ system that is extensively fluorine-bridged at room temperature. The vibrational spectra were not consistent with C_4v or D_3h monomers.

Public Access To Beaches In America, Michael Betty

Marine Affairs Theses and Major Papers

In the United States today there exists a growing, mobile population who wish to make use of what is considered to be a diminishing natural resource, the shoreline beaches. The public is denied access to the sea and the enjoyment of shore by the littoral land owner who occupies the beach area to the exclusion of all others.

It appears that the rights of the public will have to be expanded to insure adequate space and facilities for recreation. This expansion will encroach on private rights as the population seeks access to beach areas that have assumed a public character. …

Maritime Environment: A Systems Approach, Peter A. Roche

Marine Affairs Theses and Major Papers

Some maritime activities may be independent of each other but most are in competition and some are supportive in one way or other with most other maritime activities. Fisheries and merchant vessels rarely are at odds over matters of ocean traffic. However, both those activities may object to obstructions related to offshore oil drilling. Both municipalities and fisheries complain of merchant vessel pollution. Companies of different, states compete for offshoreoil lease rights. On the other hand, synergy and sublimation sometimes result from interworkings of maritime activities. Complexes of offshore platforms increase fish congregations. Powerplant cooling ponds transmute thermal pollution into …

Abstracts Of Papers Scheduled For Presentation At The 87th Session Of The Iowa Academy Of Science, April 19, 1975, Iowa Academy Of Science

Iowa Academy of Science Documents

No abstract provided.

Close Coupling Test Of Classical And Semiclassical Cross Sections For Rotationally Inelastic Ar-N2 Collisions, Russell T. Pack

Faculty Publications

Accurate quantum mechanical close coupling (CC) integral cross sections are reported for rotationally inelastic Ar-N2 collisions at room temperature using an empirical intermolecular potential. These cross sections are used to test the infinite order sudden (IOS) approximation and the results of several methods [classical trajectories (CT), full sudden (SA), generalized phase shift (GPS), and classical limit generalized phase shift (CGPS)] as reported in the preceding paper by Pattengill. The IOS approximation works very well for cross sections involving low rotational states. The CT method works well for all the cross sections examined, justifying the popular belief that the rotational motion …

Ua77/1 Western Alumnus, Vol. 44, No. 4, Wku Alumni Association

WKU Administration Documents

WKU alumni magazine. Features the following articles:

• Dilmarter, Ronald. What Is a Cave, Anyway?
• Gray, David. Water Quality Studied
• Snodgrass, Jim. Spelunking in Big Cave Country
• Morse, Mike. The People of Cave Country
• Wilson, Gordon. Remember When . . . Folklore of the Cave Region
• The Seventh Wonder 'Makes It' to Celluloid - 'First' Cave Film - Mammoth Cave
• 1+2+4=1 Great Season - Track & Field
• Given, Ed. The Little Man Who Stood Tall, Al Almond
• Sutherland, David. Teacher Corps: Western Interns Learn/Teach on the Job
• Thompson, Kelly. An Appreciation - Gordon Wilson
• Cassidy, Frederic. Importance of Depth Collecting - …

Statistical Analysis Of Fourier Coefficients In A Restricted Harmonic Dial, Danny D. Dyer

Mathematics Technical Papers - Archive

Due to the physical nature of certain periodic data, the harmonic dial points (the Fourier coefficients obtained from harmonic analysis of the data) are sometimes restricted to circular regions in the dialplane. It is proposed that a circular normal distribution (CND) truncated outside a circular region be used to describe the probabilistic behavior of the random phenomena. Recurrence relations for the population moments of a CND truncated outside a circular region are derived. These recurrence relations are used to obtain consistent asymptotically (jointly) normal estimators of the unknown parameters of the distribution. A numerical example based on the harmonic dial …

A Comparative Investigation Of Mammalian Serine Transhydroxymethylases, Sanha Panichajakul

Theses and Dissertations

Serine transhydroxymethylase was purified one thousand-fold from bovine brain and one hundred and twenty-fold from bovine liver. Both enzymes were yellow due to the presence of the coenzyme pyridoxal 5'-phosphate. Polyacrylamide gel electrophoresis of the liver enzyme showed one major band containing 95% of the protein, while in the case of the brain enzyme two major bands of nearly equal intensity were observable. The specific activity of the crude liver enzyme was about sixty times higher than that of brain. The liver enzyme was also more heat stable than the brain enzyme. The purified enzymes exhibited L-allothreonine and L-threonine aldolase …

The Kinetics And Mechanism Of A Free Radical Decay In Aqueous Solution, Denzel Lee Fillmore

Theses and Dissertations

The decomposition of nitrosyl disulfonate ion was studied in strongly alkaline solution of 10-2 to 5 m sodium hydroxide. The decomposition was found to be first-order in both hydroxide and nitrosyl disulfonate ions. A multi-step mechanism involving sulfite ion, sulfite ion radical and nitrosyl monosulfonate ion radical as intermediates was proposed, with the initiating step being the SN2 replacement of a sulfite ion by a hydroxide ion. The rate constant for the initiating step ranged from 1.2 x 10-7 to 2.25 x 10-5 M-1s-1 for the solution concentration range of the study. The products of the decomposition were identified as …

Composition, Time, And Size Distributions Of Airborne Particulate Material In Utah Valley, Douglas R. Lawson

Theses and Dissertations

The Lundgren impactor is used to determine the variations in time and size distributions of particulate matter in Utah Valley. Charged particle X-ray fluorescence is employed in this study to determine elemental concentrations. Air samples are taken during two 24-hour periods in downtown Provo, 24 hours near U.S. Steel Corporation, Geneva Works, and 12 hours at Lindon Elementary School, and diurnal particulate variations are compared. The amounts of lead and bromine are four times greater on a weekday than on a Sunday in downtown Provo, suggesting the effect of the automobile on atmospheric particulate concentrations. Paraffin coated impaction surfaces are …

Beach Access: Public Right Or Public Privilege, John E. Jessup

Marine Affairs Theses and Major Papers

All the coastal states of the U.S., particularly the more populous, have been and are struggling with the problem of obtaining public access to the nation's coastal beaches. There s a large volume of litigation and legislation devoted wholly or in part to mitigating the problem. It is the intent of this paper to examine some of the landmark court cases on the subject throughout the U.S. and also Federal legislation which has been proposed or enacted. Because the issue joined is so basic, i.e., public rights to use the beach vs. private property rights in that same beach, emotions …

Development Of Proton-Induced X-Ray Emission Techniques With Application To Multielement Analyses Of Human Autopsy Tissues And Obsidian Artifacts, Kirk Kay Nielson

Theses and Dissertations

A method of trace element analysis using proton-induced X-ray emission (PIXE) techniques with energy dispersive X-ray detection methods is described. Data were processed using the computer program ANALEX. PIXE analysis methods were applied to the analysis of liver, spleen, aorta, kidney medulla, kidney cortex, abdominal fat, pancreas and hair from autopsies of Pima Indians. Tissues were freeze dried and low temperature ashed before analysis. Concentrations were tabulated for K, Ca, Ti, Mn, Fe, Co, Ni, Cu, Zn, Pb, Se, Br, Rb, Sr, Cd and Cs and examined for significant differences related to diabetes. Concentrations of Ca and Sr in aorta, …

Double Beta Decay Of ¹²⁸Te, Edward W. Hennecke, Oliver Manuel, Dwarka D. Sabu

Chemistry Faculty Research & Creative Works

The half-life of ¹²⁸Te relative to the half-life of ¹³⁰Te has been found to be t12128t12130=(1.59±0.05)×10³ by measurement of the ββ-decay products, ¹²⁸Xe and ¹³⁰Xe, in a geologically old (2.4×10⁹ yr) telluride ore. These results yield an upper limit on the lepton nonconservation parameter, η≤0.8×10^-4. RADIOACTIVITY ββ-decay ¹²⁸Te; measured T_1/2=1.5×1024 yr; deduced η≤0.8×10^-4. Detected excess ¹²⁸Xe in old Te ore.

Use Of Selected Macroinvertebrates As Indicators Of Sedimentation Effects On Huntington River, Utah, Michael Kenneth Reichert

Theses and Dissertations

Benthic macroinvertebrate communities of Huntington River, Emery County, Utah were studied to determine effects of sedimentation from construction of Electric Lake Dam, a state highway, and two bridges. Approximately 900 benthic samples were collected from riffle areas above, in, and below the construction zone from January, 1971 to December, 1973. Two settling basins below construction sites were effective in limiting scouring of downstream communities. Heavy silt deposition was limited to a 1-km stream reach. Number of indicators, density, and biomass were reduced in the construction zone during periods of sediment input. During periods of scouring, density and biomass were reduced; …

Perfect Polynomials Over Gf(Q), James R. O'Connell Jr., Jacob T. B. Beard Jr., Karen I. West

Mathematics Technical Papers - Archive

A monic polynomial [see pdf for notation] is called perfect over GF(q) if and only if the sum [see pdf for notation] of the distinct monic divisors in GF[q,x] of A(x) equals A(x). Principal results characterize all perfect polynomials over GF(p) which split in GF[p,x]. Related results lead to conjectured analogs of the classical problem on the existence of odd perfect numbers.

Vector Lyapunov Functions And Perturbations Of Nonlinear Systems, Marion E. Moore, Roger W. Mitchell

Mathematics Technical Papers - Archive

Two recent papers [2,3] have combined the techniques of the Lyapunov method and the nonlinear variation of parameters to study the effects of perturbations of nonlinear differential systems. In this paper, we generalize the results obtained in [2,3] by the use of several Lyapunov functions and the concept of a generalized norm. To convince ourselves that we do have more flexibility in working with the generalized norm and vector Lyapunov functions see [1,4].

Block Diagonalization And Eigenvalues, Jerome Eisenfeld

Mathematics Technical Papers - Archive

Let A denote an Algebra with an identity element. Consider an [see pdf for notation] matrix [see pdf for notation] with a partitioning [see pdf for notation] where E and H have respective orders [see pdf for notation] and [see pdf for notation]. We seek to obtain conditions under which A is similar to a matrix D of the form [see pdf for notation] where [see pdf for notation] denotes the zero [see pdf for notation] matrix over A. Some advantage is gained in working in a general algebra. The algebra A may be taken as a Banach algebra of …

Unitary Perfect Polynomials Over Gf(Q), Jacob T. B. Beard

Mathematics Technical Papers - Archive

For monic polynomials A(x), B(x) e GF[q,x], call B(x) a unitary divisor of A(x) provided (B(x),A(x)/B(x)) = 1 . The polynomial A(x) is called unitary perfect over GF(q) if and only if the sum [see pdf for notation] of the distinct unitary divisors of A(x) equals A(x). Principal results characterize all unitary perfect polynomials over GF(p) which split in GF[p,x].

The Relationship Of Locus Of Control Of The Diabetic Patient And Compliance With Medical Regimen, Lois Daniel

Loma Linda University Electronic Theses, Dissertations & Projects

The literature indicates that many diabetic patients do not adhere to their prescribed medical regimen and that there is a need to discover factors that stimulate compliant behavior. It has been proposed that the patient's decision to accept or reject treatment has many determinants. This study explored the effect of one such determinant, the locus of control (the source of the stimulus for a person's behavior). It was hypothesized that a person with an internal locus (one who believes his actions influence his future) would be more likely to comply with a medical regimen than one with an external locus …

Differential Cross Sections For Elastic And Inelastic Scattering Of 15-100-Kev Li⁺ By He, John T. Park, Victor Pol, James E. Lawler, Jacob M. George, John E. Aldag, John W. Parker, Jerry Peacher

Physics Faculty Research & Creative Works

Sets of energy-loss spectra for Li⁺ incident on He that were taken at a series of scattering angles were used to calculate differential cross sections. Differential cross sections are given for elastic scattering and for excitation of the He (n=2) states. The differential cross section is also given for excitation of states corresponding to a 60-eV energy loss. These inelastic differential cross sections exhibit maxima at scattering angles greater than zero. The velocity dependence of the cross sections can be compensated by displaying the elastic data in ρ-vs-τ plots and the inelastic data in ρ-vs-E^3/2θ plots. When …

"The Curious Behavior Of Complex Systems: Lessons From Biology", Heinz Von Foerster

Special Collections: Oregon Public Speakers

No abstract provided.

"A Philosophy For Complexity", Charles West Churchman

Special Collections: Oregon Public Speakers

No abstract provided.

On The Existence Of Zeros Of Lyapunov-Monotone Operators, S. Leela, V. Lakshmikantham

Mathematics Technical Papers - Archive

Consider a nonlinear operator T from a Banach space into itself. The study of the existence of zeros of T plays an important role in yielding fixed points of nonlinear operators. The operator T has a zero if and only if the initial value problem [see pdf for notation],has a constant solution. If T is a monotone operator then (1.1) has a unique solution [see pdf for notation] defined on [see pdf for notation] and the solution operator [see pdf for notation] is nonexpansive for all [see pdf for notation]. Imposing further assumptions one can show that U(t) must have …