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Iowa State University

1997

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Interorganizational Relations In Human Services: The Case Study Of Asset, Andrea Kovacova Jan 1997

Interorganizational Relations In Human Services: The Case Study Of Asset, Andrea Kovacova

Retrospective Creative Components

No abstract provided.


An Evaluation Of Genetics 308x/508x Biotechnology In Agriculture, Food, And Human Health, Peter M. Loyd Jan 1997

An Evaluation Of Genetics 308x/508x Biotechnology In Agriculture, Food, And Human Health, Peter M. Loyd

Retrospective Creative Components

No abstract provided.


Modal Sensitivity Analysis And Tcsc Effectiveness, Qinghua Liu Jan 1997

Modal Sensitivity Analysis And Tcsc Effectiveness, Qinghua Liu

Retrospective Theses and Dissertations

No abstract provided.


A Scanning Electron Microscope Survey Of Rat Sciatic Nerve Tissue Regeneration Through A Silicone Rubber Multiple Lumen Nerve Cuff Utilizing Growth Stimulant Patterns, Cheryl Ann Miller Jan 1997

A Scanning Electron Microscope Survey Of Rat Sciatic Nerve Tissue Regeneration Through A Silicone Rubber Multiple Lumen Nerve Cuff Utilizing Growth Stimulant Patterns, Cheryl Ann Miller

Retrospective Theses and Dissertations

A scanning electron microscope survey was performed to characterize regenerated rat sciatic nerve tissue that was formed in the presence of either collagen gel or collagen, fibronectin and laminin growth promoting gel within a multiple lumen nerve cuff. The tissue cables were regenerated in eight weeks through a symmetric six lumen silicone rubber nerve guide for a gap length of 15.0 mm with inner lumen diameters of 0.5 mm and in which the lumens contained both types of gels in an alternating lumen filling sequence. Both varieties of gel fillings were successful in establishing complete cables across this ...


An Attributional Analysis Of Saudi Male Students' Reactions Toward A Friend With Aids , Abdallah Mohammed Badahdah Jan 1997

An Attributional Analysis Of Saudi Male Students' Reactions Toward A Friend With Aids , Abdallah Mohammed Badahdah

Retrospective Theses and Dissertations

The reactions of people toward persons living with AIDS have been studied from different theoretical perspectives. Most of these studies have been conducted in the United States and Western Europe. A small number of studies, however, have been conducted in developing countries. Review of the literature reveals the absence of studies on people's reactions toward AIDS patients in Saudi Arabia. The goal of the present study was to examine Saudi students' emotional reactions and willingness to help a friend with AIDS using Weiner's theory of attribution. Structural equation modeling was used to test several hypotheses. Paths from assignment ...


Neutron Scattering Studies Of Reni2b2c (Re=Lu,Y,Ho,Er): Lattice Dynamics , Max Bullock Jan 1997

Neutron Scattering Studies Of Reni2b2c (Re=Lu,Y,Ho,Er): Lattice Dynamics , Max Bullock

Retrospective Theses and Dissertations

Inelastic neutron scattering techniques have been used to study the low energy phonon excitations in superconducting RENi2B2C (RE=Lu, Y) to further characterize the anomalous features observed by Kawano et al. (Phys. Rev. Lett., 77, 4628 (1996)) for RE=Y and Stassis et al. (Phys. Rev. B, 55, R8678 (1997)) for RE=Lu, when these systems enter the superconducting ground state. We find that above T c the frequencies of the [delta]4[[xi] 00] lowest-lying acoustic and optic phonon modes decrease with decreasing temperature, for [xi] close to the nesting vector [xi]m. In addition there is a shift ...


Mass Transfer Mechanisms In Air Sparging Systems , Washington Jose Braida Jan 1997

Mass Transfer Mechanisms In Air Sparging Systems , Washington Jose Braida

Retrospective Theses and Dissertations

The air-water mass transfer of VOCs during air sparging was investigated using a single-air channel air sparging setup and a 14 cm (51[over] 2 in) diameter soil column. Three different porous media and 10 VOCs were used in the study. Air velocities ranged from 0.2 cm/s to 2.5 cm/s. Experimental results for the single-air channel setup indicated that volatilization of VOCs during air sparging was a diffusion limited process. VOCs, in a thin layer of saturated porous media next to the air channels (identified as the mass transfer zone, MTZ), were found to deplete rapidly ...


The Influence Of Cognitive Psychology On Art Education As Seen In The Work Of Howard Gardner And Elliot Eisner , Marcia C. Rich Jan 1997

The Influence Of Cognitive Psychology On Art Education As Seen In The Work Of Howard Gardner And Elliot Eisner , Marcia C. Rich

Retrospective Theses and Dissertations

This dissertation examines the influence of educational psychology on contemporary art education. The century-old debate in art education between those wanting more scientific methods of teaching and assessment and those wanting a more child-centered education appears in contemporary version in the work of Howard Gardner and Elliot Eisner. In this contemporary setting it is the educator, Eisner, who wants more discipline-oriented curricula, while the cognitive scientist, Gardner, calls for more child-centered education. By examining the writings of Howard Gardner, a cognitive scientist, and Elliot Eisner, an art educator, and comparing the art education programs overseen by them, i.e., Arts ...


Status, Behavior, And Appearance Among African Americans In A Midwestern Coal Mining Town, 1900-1923 , Marlena Thomas Beavers Jan 1997

Status, Behavior, And Appearance Among African Americans In A Midwestern Coal Mining Town, 1900-1923 , Marlena Thomas Beavers

Retrospective Theses and Dissertations

The distinction of status groups and classes is one that is important, though often confused and overlooked in studies of the African American community. This research focuses on social status in a predominantly black coal mining community from 1900 to 1923. The first objective of the study was to examine social structure in predominantly African American, industry-based community. The second objective was to determine the criteria used in African American communities to establish levels of status. The third objective was to investigate whether standards of appearance were used in making status distinctions in an African American coal mining community. The ...


A Causal Model Of Predictors Of Research Productivity And Science-Related Career Goals Among Counseling Psychology Graduate Students , Jeffrey Howard Kahn Jan 1997

A Causal Model Of Predictors Of Research Productivity And Science-Related Career Goals Among Counseling Psychology Graduate Students , Jeffrey Howard Kahn

Retrospective Theses and Dissertations

The present study investigated predictors of research productivity and science-related career goals in a sample of graduate students in counseling psychology. It was hypothesized that Holland personality and perceptions of the research training environment (RTE) influence interest in research and research self-efficacy. These latter two variables, in turn, were hypothesized to influence research productivity and career goals. It was further hypothesized that the students' gender and year in the doctoral program would contribute to this causal model as additional predictor variables. A sample of 287 graduate students (representing a response rate of 55%) from 15 randomly selected APA-accredited counseling psychology ...


Regulation Of Brucella Abortus Catalase As A Defensive Mechanism Against Oxidative Stress , Jeonga Kim Jan 1997

Regulation Of Brucella Abortus Catalase As A Defensive Mechanism Against Oxidative Stress , Jeonga Kim

Retrospective Theses and Dissertations

Free radicals in the nature are harmful to organisms because they cause damage to tissues, cell membranes, proteins, and DNA. The animal immune system (cell mediated immune response) uses oxygen molecules to kill foreign organisms. B. abortus causes a cattle disease called brucellosis. The mechanism for bacteria to survive and adapt in the face of oxidative attack is thought to be important for understanding pathogenesis. This dissertation presents the response of B. abortus to oxidative stress and the regulation of catalase as a defensive mechanism;Different protein expression patterns were observed during oxidative stress by conducting 2-D protein gel analysis ...


Staff Evaluations And Perceptions Of Organizational Culture: Implications For Performance Improvement And Mental Healthcare Service Evaluation , Jeffrey Scott Kerber Jan 1997

Staff Evaluations And Perceptions Of Organizational Culture: Implications For Performance Improvement And Mental Healthcare Service Evaluation , Jeffrey Scott Kerber

Retrospective Theses and Dissertations

The researcher studied staff perceptions and evaluations regarding the provision of adult outpatient mental health services at a county medical center. Methods to improve the quality of adult outpatient mental health services were examined. Qualitative methods were employed to conduct a process and cultural assessment. The researcher addressed: (1) staff evaluations of crucial issues regarding performance improvement, (2) cultural issues relating to organizational change and development, (3) the interventive impact of focus group involvement, (4) the utility of qualitative methods for data analysis, (5) specific considerations for mental healthcare staff, and (6) how the evaluative process of a specific service ...


Differences In Perceived Technological Problem-Solving Ability Of University Technology And Humanities Students , Farhad Jadali Jan 1997

Differences In Perceived Technological Problem-Solving Ability Of University Technology And Humanities Students , Farhad Jadali

Retrospective Theses and Dissertations

Technology is one of the most dominant factors impinging on our lives. Of critical importance is that some citizens have specific knowledge of how to solve selected problems and make intelligent and informed decisions about technology. The purpose of this study was to determine if university students' perspectives of their technological problem-solving skills improve as they progress through their degree programs. The study was designed to look at selected student criteria to determine the results;A Perceived Technological Problem Solving Ability Instrument (PTPSAI) was developed to address the following research questions: (1) Is there a significant difference in the perceptions ...


Annexation In Iowa: An Analysis Of The Iowa Annexation Statutes, Robin Renae Habeger Jan 1997

Annexation In Iowa: An Analysis Of The Iowa Annexation Statutes, Robin Renae Habeger

Retrospective Theses and Dissertations

Two different types of controls regulate the growth of cities in Iowa. Zoning provides cities with internal control, and annexation gives cities the ability to acquire additional land along its boundaries. As the cities in Iowa have grown the annexation statutes have been used extensively. Several types of annexation can be used to expand the boundaries of a city; each type has criteria that must be met in order for the annexation to be legal. Many cities in Iowa have started looking to the same land for growth and as these cities try to annex the same land, weaknesses with ...


Hog Industry And Hog Production Related Water Pollution Problem In Taiwan: An Application To Valuing The Willingness To Pay For Improving Water Quality, Kuo-Chang Ro Jan 1997

Hog Industry And Hog Production Related Water Pollution Problem In Taiwan: An Application To Valuing The Willingness To Pay For Improving Water Quality, Kuo-Chang Ro

Retrospective Theses and Dissertations

No abstract provided.


Wind Tunnel Testing Of Shelterbelt Effects On Dust Emissions From Swine Production Facilities, David Joseph Laird Jan 1997

Wind Tunnel Testing Of Shelterbelt Effects On Dust Emissions From Swine Production Facilities, David Joseph Laird

Retrospective Theses and Dissertations

http://www.worldcat.org/oclc/37760275


Multifrequency Eddy Current Signal Analysis, Avanindra Jan 1997

Multifrequency Eddy Current Signal Analysis, Avanindra

Retrospective Theses and Dissertations

This thesis presents a novel procedure for representing and processing multifrequency eddy current signals. Multifrequency eddy current NDE methods are used extensively for the inspection of steam generator tubes in nuclear power plants. Existing methods utilize computationally expensive time domain procedures to process the data. The procedure outlined in the thesis uses frequency domain methods to minimize the computational effort significantly. Two different approaches are evaluated. The first method uses the Fourier descriptor to represent the signal. The Fourier coefficients are utilized to obtain the rotation, scaling and translation parameters required for mixing. The second approach uses the cosine transform ...


The Effects Of The Black Death On The Lower Gentry And Offices Of Coroner And Verderer In Fourteenth-Century England, Kevin Christopher Delange Jan 1997

The Effects Of The Black Death On The Lower Gentry And Offices Of Coroner And Verderer In Fourteenth-Century England, Kevin Christopher Delange

Retrospective Theses and Dissertations

Evidence put forth by John Hatcher in Plague Population and the English Economy, and by Rosemary Horrox, editor of The Black Death, shows that in the years of 1348-49, 1361, 1369,1375, and 1390-93 plagues of varying strengths struck England. By examining the Calendar of the Close Rolls, the death rates of coroners and verderers during these outbreaks can be determined. This in turn allows a death rate to be obtained for the county gentry from which these officials were drawn. The plagues of the latter fourteenth century also had an effect of the offices of coroner and verderer themselves ...


Shear Strength Of Shredded Tires As Applied To The Design And Construction Of A Shredded Tire Stream Crossing, Megan Alissa Gebhardt Jan 1997

Shear Strength Of Shredded Tires As Applied To The Design And Construction Of A Shredded Tire Stream Crossing, Megan Alissa Gebhardt

Retrospective Theses and Dissertations

Scrap tire stockpiles have grown in the United States leading to a significant disposal problem. The most recent survey conducted by the Scrap Tire Management Council reported that 850 million tires are stockpiled in the United States, with an additional 250 million tires still generated each year (1995). The research described herein was undertaken to develop design guidelines for shredded tire stream crossings. The shear strength properties have been investigated for tire shreds as well as tire shreds in contact with glacial till. The shredded tires range from 40 mm to 1.4 m in length. There are several documented ...


Numerical Modeling Of Pulsed Eddy Current Techniques For Detection Of Corrosion And Cracks, Kiran Kumar Dasoju Jan 1997

Numerical Modeling Of Pulsed Eddy Current Techniques For Detection Of Corrosion And Cracks, Kiran Kumar Dasoju

Retrospective Theses and Dissertations

In this thesis we study pulsed eddy current based techniques for characterizing both corrosion and cracks in layered metallic structures. Our primary goal is to understand and model the characteristic features of time-domain current-voltage response functions for characterizing corrosion and cracks. Pulsed eddy current based approach is simpler and faster than frequency domain approaches, and the pulsed eddy current equipment developed for defect detection is less expensive than alternative approaches and easily portable. We take the layer approximation theory for corrosion and the boundary integral method for cracks as the basis for computing the change in impedance of the coil ...


Nde Data Fusion Using Morphological Approaches , Young-Won Song Jan 1997

Nde Data Fusion Using Morphological Approaches , Young-Won Song

Retrospective Theses and Dissertations

The objective of most data fusion algorithms is to combine information made available by various sensors synergistically in order to enhance the overall level of information. Since information obtained from data sources such as sensors is often incomplete or imprecise in nature, the application of data fusion techniques has evoked interest in a number of fields ranging from robotics to nondestructive evaluation (NDE). In NDE applications, such techniques can be used to integrate and fuse data obtained using multiple inspection modalities to produce a more comprehensive picture of the condition of the test specimen. As an example, ultrasonic and eddy ...


Analyzing The Effects Of Father's Antisocial Behavior On Mothers And Children: A Longitudinal Study Of Single-Parent Families , Marlene Renee Fisher Jan 1997

Analyzing The Effects Of Father's Antisocial Behavior On Mothers And Children: A Longitudinal Study Of Single-Parent Families , Marlene Renee Fisher

Retrospective Theses and Dissertations

This study examines changes in mothers' and adolescent mental health and behavioral measures in recently divorced single parent families. Overall, mothers in the study showed improvement in multiple measures of mental health over the course of this three year study. Single mother's problems with drinking also improved over time. Lower income women whose former spouse had problems with alcohol showed the most improvement in anxiety over time. Women who reported more physically abusive behavior prior to their divorce also reported the most improvement in depression over time. Women who continued to experience abuse in the post-divorce setting continued to ...


Socio-Economic Analysis Of An Agroforestry System With The Winnebago Tribe Of Nebraska , Marcella Brian Szymanski Jan 1997

Socio-Economic Analysis Of An Agroforestry System With The Winnebago Tribe Of Nebraska , Marcella Brian Szymanski

Retrospective Theses and Dissertations

The results from an economic analysis of an agroforestry system and a Participatory Rural Appraisal (PRA) for community land-use decision-making with the Winnebago Tribe of Nebraska are presented as a series of three papers. The dissertation will emphasize different parts of the study with an overall focus on the community development aspects of the agroforestry system. Chapter 1 emphasizes the use of PRA to obtain an emic or "insiders" perspective on the land-use needs of the Winnebago Tribe and community. As a rapid, low-cost method of data collection, PRA techniques have been used as a means of incorporating indigenous knowledge ...


The Use Of Fourier Reverse Transforms In Crystallographic Phase Refinement , Sharon Lynn Ringrose Jan 1997

The Use Of Fourier Reverse Transforms In Crystallographic Phase Refinement , Sharon Lynn Ringrose

Retrospective Theses and Dissertations

Often a crystallographer obtains an electron density map which shows only part of the structure. In such cases, the phasing of the trial model is poor enough that the electron density map may show peaks in some of the atomic positions, but other atomic positions are not visible. There may also be extraneous peaks present which are not due to atomic positions. A method for determination of crystal structures that have resisted solution through normal crystallographic methods has been developed. PHASER is a series of FORTRAN programs which aids in the structure solution of poorly phased electron density maps by ...


Maternal Factors Affecting Academic Achievement Of Latino Adolescents , Marisa Rivera Jan 1997

Maternal Factors Affecting Academic Achievement Of Latino Adolescents , Marisa Rivera

Retrospective Theses and Dissertations

Latinos are the fastest growing segment of the population in the United States. Consequently, that growth will have a dramatic effect on this country.. The high number of Latino youth that drop out of school is exceedingly critical in light of the fact that by the turn of the century less than 14 percent of jobs will require less than a high school diploma. There is divergence among researchers as to the cause of the high drop out rates. Some attribute it directly to socioeconomic factors while others argue that those factors should be viewed as distal influences and that ...


Physicochemical Properties Of The Anion-Modified Surfaces Of Silver Nanostructures , Morgan Scot Sibbald Jan 1997

Physicochemical Properties Of The Anion-Modified Surfaces Of Silver Nanostructures , Morgan Scot Sibbald

Retrospective Theses and Dissertations

Nano-sized structures of silver were prepared, characterized, and then chemically-modified with the adsorption of molecules and ions on the metal surface. Nanostructures prepared as aqueous colloids were found to have highly regular polyhedral shapes by transmission electron microscopy. Electron diffraction techniques indicated that isolated Ag structures were composed of a single crystalline phase or were multiply-twinned, both having a lattice constant of 4.05 A;Adsorption of iodide and bromide ions on the silver surface was monitored by surface-enhanced Raman spectroscopy. A characteristic halide-metal stretching vibration was observed at 112 cm-1 for I- and at 156 cm-1 for Br-. Extinction ...


Spatial Modeling Using Graphical Markov Models And Wavelets , Hsin-Cheng Huang Jan 1997

Spatial Modeling Using Graphical Markov Models And Wavelets , Hsin-Cheng Huang

Retrospective Theses and Dissertations

Graphical Markov models use graphs to represent possible dependencies among random variables. This class of models is extremely rich and includes inter alia causal Markov models and Markov random fields. In this dissertation, we develop a very efficient optimal-prediction algorithm for graphical Markov models. The algorithm is a generalization of the Kalman-filter algorithm for temporal processes, and it can in principle be applied to any Gaussian undirected graphical model and any Gaussian acyclic directed graphical model;We also propose a new class of multiscale models for stochastic processes in terms of scale-recursive dynamics defined on acyclic directed graphs. The models ...


Computing And Evolving Variants Of Computational Depth , James Irvin Lathrop Jan 1997

Computing And Evolving Variants Of Computational Depth , James Irvin Lathrop

Retrospective Theses and Dissertations

The structure and organization of information in binary strings and (infinite) binary sequences are investigated using two computable measures of complexity related to computational depth. First, fundamental properties of recursive computational depth, a refinement of Bennett's original notion of computational depth, are developed, and it is shown that the recursively weakly (respectively, strongly) deep sequences form a proper subclass of the class of weakly (respectively, strongly) deep sequences. It is then shown that every weakly useful sequence is recursively strongly deep, strengthening a theorem by Juedes, Lathrop, and Lutz. It follows from these results that not every strongly deep ...


Evaluation Of Natural Enemies Of The European Corn Borer, Ostrinia Nubilalis (Lepidoptera: Pyralidae) , Mpho Wycliffe Phoofolo Jan 1997

Evaluation Of Natural Enemies Of The European Corn Borer, Ostrinia Nubilalis (Lepidoptera: Pyralidae) , Mpho Wycliffe Phoofolo

Retrospective Theses and Dissertations

The overall objective of this dissertation was to evaluate, both directly and indirectly, the natural enemies of the European corn borer (ECB). The direct evaluation component consisted of two parts: (1) Assessment of the level of naturally occurring mortality of the ECB and evaluation of the impact of biotic and abiotic factors that cause this mortality, and (2) Quantitative evaluation of the impact of augmentative releases of Trichogramma brassicae, a parasitoid of the ECB eggs, on reducing larval densities and damage on corn plants. The indirect laboratory-based evaluation, addressed two factors that affect the efficacy of natural enemies: prey suitability ...


A Comparison Of Incidence Of Injury And Recovery Profiles Of Intercollegiate Women Basketball Players Sustaining Anterior Cruciate Ligament Ruptures , Alice Mcneill Mclaine Jan 1997

A Comparison Of Incidence Of Injury And Recovery Profiles Of Intercollegiate Women Basketball Players Sustaining Anterior Cruciate Ligament Ruptures , Alice Mcneill Mclaine

Retrospective Theses and Dissertations

Injuries to the anterior cruciate ligament (ACL) in women basketball players have come under recent scrutiny as it has become apparent that women athletes sustain more ACL injuries than their male counterparts. The purposes of this study were to examine (a) the effectiveness of intervention techniques in relation to sport return rates among women basketball players, (b) the effectiveness of injury prevention tactics in limiting anterior cruciate ligament injury rates, and (c) differences in these factors among NCAA Divisions I, II, and III;Data were collected from certified athletic trainers at forty-eight institutions across the nation. Representation was equally spread ...