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Fatigue Failure Of Composite Bolted Joints., Paul Douglas Herrington
Fatigue Failure Of Composite Bolted Joints., Paul Douglas Herrington
LSU Historical Dissertations and Theses
The objective of this study is to investigate the fatigue behavior of a double-lap, bolted composite joint. The material used for all tests is a quasi-isotropic graphite-epoxy laminate. Prior to fatigue testing, monotonic loading tests were performed in order to establish the important fundamental properties of friction coefficients and the ultimate bearing strength of composite joints. Proper design of friction type bolted joints for composite materials accounts for the force transmitted through friction between the clamped materials. This consideration requires knowledge of the coefficient of friction between the mating surfaces of the bolt, or washer, and the composite material. In …
Family Support For Persisters And Non-Persisters In Louisiana's Adult Basic Education Programs., Geraldine Hargrove Holmes
Family Support For Persisters And Non-Persisters In Louisiana's Adult Basic Education Programs., Geraldine Hargrove Holmes
LSU Historical Dissertations and Theses
The role that family involvement and the effects of home efforts have on improved student achievement for children is well documented in the literature. The purpose of this study was to determine whether family support should be considered when planning adult basic education (ABE) programs. The objectives addressed were: demographic characteristics, level of family support, and relationship of family support among selected variables. A statewide random sample of 197 adult basic education students was surveyed (82.7% response rate). Persisters (students who either completed the ABE program or were continuing their instruction when the study was conducted) and non-persisters (students who …
Specific Cell Adhesion And Its Application In Mixed Culture Fermentations., Yeou-Fu Hwang
Specific Cell Adhesion And Its Application In Mixed Culture Fermentations., Yeou-Fu Hwang
LSU Historical Dissertations and Theses
Cell adhesion mediated by bonds between receptors in the cell membrane and ligands on a solid support is referred to as specific cell adhesion. This work focused on the application of specific cell adhesion in control of mixed culture fermentations and on the development of solution methods of mathematical models for cell adhesion. Through various experimental techniques, a model two-strain mixed culture system was obtained. This system was used to explore the possibility of mixed culture control through selective adhesion of particular subpopulations. It was found that through a proper reactor design and operating procedure, the coexistence of the mixed …
Valuation Of Firm-Bank Relationships: A Test Of The Delegated Monitoring Hypothesis., Shane Alan Johnson
Valuation Of Firm-Bank Relationships: A Test Of The Delegated Monitoring Hypothesis., Shane Alan Johnson
LSU Historical Dissertations and Theses
In this thesis, we test the hypothesis that banks provide monitoring services that benefit client firm shareholders. We argue that if the value of firm-bank relationships stems from monitoring services provided by banks, then share price responses associated with announcements of bank loans should be cross-sectionally related to variables that proxy the degree of monitoring to which firms are already subject. Our sample differs from previous studies of bank debt announcements in two key aspects: inclusion of NASDAQ firms, and inclusion of announcements carried by the newswire but not the Wall Street Journal. Consistent with suggestions by Fama (1985) and …
School Centralization And Organizational Effectiveness: The Role Of Teacher Alienation., Bobby L. Johnson Jr
School Centralization And Organizational Effectiveness: The Role Of Teacher Alienation., Bobby L. Johnson Jr
LSU Historical Dissertations and Theses
The focus of educational reform in recent years has shifted to the restructuring of schools. Many reformers have defined restructuring in terms of the decentralization of power within schools (Elmore et al., 1990). Yet, there is little research to suggest how such decentralization will affect teachers and improve schools. Given this scarcity, the purpose of this study was to explore the relationships between the degree of centralized decision-making which exists in a school, teachers' cognitive and affective work alienation, and multiple indices of school effectiveness. Such relationships were examined within the context of Seeman's (1972) framework of social change as …
The Introduction Into Tobacco Plants Of Genes Which Encode Some Of The Natural Components Of The Humoral Immune Response Of Hyalophora Cecropia., Luis Julio Cesar Destefano Beltran
The Introduction Into Tobacco Plants Of Genes Which Encode Some Of The Natural Components Of The Humoral Immune Response Of Hyalophora Cecropia., Luis Julio Cesar Destefano Beltran
LSU Historical Dissertations and Theses
A number of plant pathogenic bacteria has been shown to be highly sensitive to SB-37, a derivative of cecropin B (one of the three cecropins from the giant silk moth Hyalophora cecropia). The lytic activity exhibited by SB-37 has been shown to increase up to twenty-fold in the presence of chicken egg white lysozyme. The cDNAs genes encoding SB-37, attacin E (another component of the humoral response of Hyalophora cecropia), and chicken lysozyme have been introduced into tobacco (var Xanthi) and potato (a new cultivar 86007) plants by Agrobacterium-mediated transformation using co-integrate and binary vectors. The genes were placed under …
Directed And Spontaneous Transfer Of College Developmental Reading Students' Textmarking Strategies., Deidra Williams Frazier
Directed And Spontaneous Transfer Of College Developmental Reading Students' Textmarking Strategies., Deidra Williams Frazier
LSU Historical Dissertations and Theses
The purpose of this study was to examine directed and spontaneous transfer of college developmental reading students' textmarking strategy use. Two males and two females enrolled in a developmental reading course at Louisiana State University participated. Participants were asked to use textmarking strategies in their introductory biology course. During scheduled meetings with the researcher, participants turned in their annotated material, discussed textmarking progress, and received feedback on the quality of their annotations. Students were also asked to reflect on strategy use in assigned journal entries. Participants were not asked to use textmarking strategies in any other content course in which …
The Rhetoric Of Community Ritual: The Blessing Of The Shrimp Fleet At Chauvin, Louisiana., Barbara Elizabeth Gordon
The Rhetoric Of Community Ritual: The Blessing Of The Shrimp Fleet At Chauvin, Louisiana., Barbara Elizabeth Gordon
LSU Historical Dissertations and Theses
This study examines the rhetorical functions of a community ritual, the blessing of the shrimp fleet at Chauvin, Louisiana. Chauvin is a Cajun community in south Louisiana. Their annual fleet blessing was instituted in the 1930's and continues today relatively unchanged. The author observed the preparations and performance of the blessing and boat parade and also interviewed community members about the blessing. The observations and interview transcriptions are the primary data used for analysis of the community discourse. Fantasy theme analysis is used to demonstrate the community's use of discourse to develop and maintain group hierarchy. The discourse reveals six …
A Neural Network Truth Maintenance System., Suresh Guddanti
A Neural Network Truth Maintenance System., Suresh Guddanti
LSU Historical Dissertations and Theses
A novel approach using Neural Networks has been developed to generate consistent labelling of facts in relation to a given set of rules. In the proposed system, facts are represented by neurons and their interconnections form the knowledge base. The Neural Network Truth Maintenance System(TMS) arrives at a valid solution provided the solution exists. A valid solution is a consistent labelling of facts. If a valid solution does not exist the network does not converge. An experimental setup was built and tested using conventional integrated circuits. The hardware design is suitable for VLSI implementation for large, real-time problems. The TMS …
The College Participation Of The 1982 Undergraduate Cohort In Louisiana Public Higher Education: A Longitudinal Analysis., Margaret Blanchard Hargroder
The College Participation Of The 1982 Undergraduate Cohort In Louisiana Public Higher Education: A Longitudinal Analysis., Margaret Blanchard Hargroder
LSU Historical Dissertations and Theses
This study examined the six-year college participation of students entering Louisiana public undergraduate higher education in Fall 1982. Motivation for the study stemmed from several educational conditions in Louisiana: a lower graduation rate than that of the nation, disparities in the graduation rates of Black students and White students, and administrative considerations for the restructuring of public higher education. The purposes of the study were: (1) to describe the population by selected characteristics and (2) to identify participation differences in enrollment, persistence, and achievement among sub-groups classified by: (a) race and gender, (b) developmental program participation, and (c) institutional types …
The Impact Of Latin American Debt Crisis On U.S., U.K., And Canadian Bank Stocks., Subbarao Venkata Jayanti
The Impact Of Latin American Debt Crisis On U.S., U.K., And Canadian Bank Stocks., Subbarao Venkata Jayanti
LSU Historical Dissertations and Theses
The 1980s have been a decade of crisis for banks engaged in international lending. This dissertation examines the impact of twelve events related to the Latin American debt crisis on the market value of the U.S., U.K., and Canadian bank stocks. The existing literature is extended in several directions. First, different types of events and several events of the same type are analyzed to enhance the generality of the conclusions. Second, a general theoretical framework involving two testable hypotheses is utilized to interpret the economic significance of the events. Third, the capital regulation hypothesis is tested extensively and it helped …
Modeling Of Physical Database Design And Performance Analysis With Emphasis On Vsam Files., Sung-Eon Kim
Modeling Of Physical Database Design And Performance Analysis With Emphasis On Vsam Files., Sung-Eon Kim
LSU Historical Dissertations and Theses
Growth in the size of a database is reflected in deterioration of database performance. Since deterioration is related to the structure of the file, the performance efficiency involves the design of a physical database and the proper management of it. This research addresses a modeling procedure of a physical database design considering both records insertions and deletions. The model describes the behavior of a physical database in a VSAM file environment, and is extended to the issue of database reorganization through a cost analysis. The cost of accessing the database increases due to the physical disorganization of the database caused …
Effective School Status: A Methodological Study Of Classification Consistency., Michael Hansen Lang
Effective School Status: A Methodological Study Of Classification Consistency., Michael Hansen Lang
LSU Historical Dissertations and Theses
This study investigated both the effect of alternating criterion-referenced tests (CRT) with norm-referenced tests (NRT) in evaluating schools and whether mean scores were masking poor delivery of educational services to low achievers in such evaluations. The sample included 242 Louisiana public elementary schools (18,000 third graders tested in 1989). The study employed ten separate multiple regression models, each producing studentized residuals used as school effectiveness indicators (SEIs). The independent variables for all models were student's free lunch status, mother's educational level, and father's employment level. The dependent variables were school mean and lower quartile scores for CRT language arts and …
The Frost Tolerance Of Tobacco Plants Transformed With The Gene Encoding The Antifreeze Protein From Winter Flounder., Jung-Sook Lee
The Frost Tolerance Of Tobacco Plants Transformed With The Gene Encoding The Antifreeze Protein From Winter Flounder., Jung-Sook Lee
LSU Historical Dissertations and Theses
The winter flounder, Pseudopleuronectes americanus, can survive in sea water at temperatures below freezing by producing antifreeze-proteins (AFPs) which depress the freezing point of their cellular fluids. The antifreeze gene (IIA7 cDNA) encodes a 91 amino acid preproprotein which is processed to a mature protein of 53 amino acids. This gene encoding only the mature antifreeze-protein, including a start methionine, was cloned into a plasmid which allowed enhanced expression from a double CaMV 35S promoter. The AFP gene construct was subcloned into both the intermediate vector pMON200 and the binary vector pBI121. After triparental mating and infection of tobacco leaf …
Characterization Of Double-Stranded Rna And Fungal Virus From Diaporthe Phaseolorum Var. Caulivora., Yong-Hwan Lee
Characterization Of Double-Stranded Rna And Fungal Virus From Diaporthe Phaseolorum Var. Caulivora., Yong-Hwan Lee
LSU Historical Dissertations and Theses
Fifty-two isolates of Diaporthe phaseolorum var. caulivora originating from eight different states of the United States were collected and grown on potato dextrose broth for 2-3 wk. Double-stranded RNA was extracted by two cycles of cellulose (CF-11) chromatography and electrophoresed on 6% polyacrylamide gel. Among all isolates tested, 28 (54%) contained at least one molecule of dsRNA. Molecular sizes of dsRNA ranged from 0.4 to 4.5 Kb, and seven different sizes of dsRNA were detected. The 4.5 Kb dsRNA did not have sequence homology with smaller dsRNAs (2.1, 1.8, and 1.4 Kb), suggesting that the smaller dsRNAs are not deletion …
An Analysis Of The Characterizations Of Aida And Amneris., Myrtle Yvette Mcdaniel
An Analysis Of The Characterizations Of Aida And Amneris., Myrtle Yvette Mcdaniel
LSU Historical Dissertations and Theses
Giuseppe Verdi's Aida has been well received by audiences since its inception. The plot of the opera centers around the relationships among Aida, her antagonist Amneris, and Radames. The two women display similar characteristics that provide not only the nucleus of their unique entities, but the themes around which the drama is constructed. The purpose of this analysis is to identify, contrast and compare points of characterization that define Aida and Amneris. These characteristics are traced from the original story by Auguste Mariette through three stages of development by Verdi: preversification, versification, and production. Chapter One begins with a brief …
Thermohaline And Hydrocarbon Related Diagenesis Of Lower Miocene And Upper Oligocene Sediments, West Hackberry Field, Cameron Parish, Louisiana: Implications For Mass Transport And Fluid Flow., Kathleen Mary Mcmanus
Thermohaline And Hydrocarbon Related Diagenesis Of Lower Miocene And Upper Oligocene Sediments, West Hackberry Field, Cameron Parish, Louisiana: Implications For Mass Transport And Fluid Flow., Kathleen Mary Mcmanus
LSU Historical Dissertations and Theses
The diagenesis of Lower Miocene and Upper Oligocene sediments flanking the West Hackberry salt dome are documented in order to determine the effect the presence of salt domes may have in driving diagenetic reactions in detrital siliciclastic sediments. These sediments have undergone significant chemical diagenesis during progressive burial resulting in a reduction in porosity and permeability. Precipitation of analcime, siderite, and calcite plus the alteration of detrital volcanic lithic fragments and replacement of aluminosilicate framework grains by calcite are the dominant reactions which have altered the Upper Oligocene sands. Analcime and siderite are also present in the Oligocene mudstones. The …
Faulkner, Truth, And The Artist's Directive: A Reading Of "A Fable"., Bobby Lynn Matthews
Faulkner, Truth, And The Artist's Directive: A Reading Of "A Fable"., Bobby Lynn Matthews
LSU Historical Dissertations and Theses
The old general in A Fable embodies the resolution of questions about the relation of art and life that Faulkner evoked in his invention of Quentin Compson in The Sound and the Fury and pursued in a series of subsequent characterizations. This artist-figure motif discloses Faulkner's implication of the relation in the modern crisis of faith. Faulkner images in narrative fiction what Nietzsche asserts in discourse, namely, the need for a reversal of the Platonic valuation of eternal "truth" (ideality) over art. The characterization of Quentin shows the potentially terrible consequences of man's propensity for mythopoeic invention, as Quentin's unconscious …
Studies On Cigarette Smoke: I. Inactivation Of Alpha-1-Pi. Ii. Oxidation Of Methionine By Peroxonitrite. Iii. Release Of Iron From Ferritin By Smoke Solutions., Juan Jose Moreno R.
Studies On Cigarette Smoke: I. Inactivation Of Alpha-1-Pi. Ii. Oxidation Of Methionine By Peroxonitrite. Iii. Release Of Iron From Ferritin By Smoke Solutions., Juan Jose Moreno R.
LSU Historical Dissertations and Theses
We have studied the interaction of cigarette smoke with two proteins: alpha-1-proteinase inhibitor ($\alpha$1PI) and ferritin. The inactivation of $\alpha$1PI, the major plasma inhibitor of serine proteases, by cigarette smoke has been implicated in the eitology of pulmonary emphysema. Release of iron from ferritin, the principal source of physiological iron, by cigarette smoke could explain increased amounts of iron observed in the pulmonary alveolar macrophages of smokers. These studies show that cigarette smoke reacts with proteins to cause amino acid modifications by two mechanisms: oxidation of methionine and nonoxidative modification of the basic amino acids. Modifications of methionine and lysine …
On The Construction And Application Of Certain Special Polarizations In Nilpotent Lie Algebras., James Donald Moss Jr
On The Construction And Application Of Certain Special Polarizations In Nilpotent Lie Algebras., James Donald Moss Jr
LSU Historical Dissertations and Theses
This dissertation arose from efforts to prove the following conjecture, which generalizes to nilpotent Lie groups a weak form of the classical Paley-Wiener theorem for $\IR\sp{n}$: Let N be any connected, simply connected nilpotent Lie group with unitary dual N, and let $\varphi\in L\sbsp{c}{\infty}(N)$. Suppose that there exists a subset E $\subset$ N of positive Plancherel measure such that $\\varphi(\pi)$ = 0 for all $\pi\in$ E, where $\\varphi(\pi)$ is the operator-valued Fourier transform of $\varphi$. Then $\varphi$ = 0 almost everywhere on N. The writer has been able to prove a slightly weakened form of the conjecture for a large …
Supervisor Characteristics Affecting Subordinates' Perceptions And Reactions To The Performance Appraisal Interview., Jeffrey Staron Rain
Supervisor Characteristics Affecting Subordinates' Perceptions And Reactions To The Performance Appraisal Interview., Jeffrey Staron Rain
LSU Historical Dissertations and Theses
Supervisor inputs (preparation, appraisal-related knowledge, and attitudes toward the appraisal system) into the performance appraisal interview were examined, using a questionnaire, for relationships to subordinate perceptions of the supervisor's appraisal interview actions (developmental and administrative). Subordinate reaction to the appraisal interview was also assessed. Eighty-nine subordinate/supervisor pairs were randomly assigned to one of three experimental preparation conditions (Example, Improve, Control). All subjects then completed the questionnaires. The results of the experimental component indicated that supervisors who generated specific performance weakness and strength examples (Improve condition) were perceived by subordinates as engaging in significantly greater developmental behaviors than in the Control …
An Investigation Of The Contribution Of Auditory-Grouping To The Comodulation Masking Release Effect., Patrick Wynn Rappold
An Investigation Of The Contribution Of Auditory-Grouping To The Comodulation Masking Release Effect., Patrick Wynn Rappold
LSU Historical Dissertations and Theses
The comodulation masking release (CMR) effect involves improved detection of a pure-tone signal in an amplitude-modulated (AM) masker by an addition of AM noise spectrally distant from the signal (i.e, outside the critical-band of the signal). The underpinning of CMR has been elusive, and despite many previous investigations of this phenomenon it remains unexplained. A plausible explanation of CMR involves perceptual, auditory-grouping of acoustic signals. The purpose of this project was to investigate an hypothesis based on auditory-grouping to explain the CMR effect. A series of three experiments was completed towards this purpose. In the first, signal detection thresholds were …
Ecology Of Wintering Redheads (Aythya Americana) On The Lower Laguna Madre, Texas., Christine Anne Mitchell
Ecology Of Wintering Redheads (Aythya Americana) On The Lower Laguna Madre, Texas., Christine Anne Mitchell
LSU Historical Dissertations and Theses
Data on behavior, distribution, and food and habitat requirements of wintering redhead ducks (Aythya americana) were collected during 2.5 winters on the lower Laguna Madre, Texas, between 1987 and 1989. Migrating redheads began arriving on the lower Laguna Madre with frontal passages in early October. They initially congregated in the central portion of the lagoon, and the majority remained there through the winter. As winter progressed, flocks dispersed to other parts of the Laguna Madre. Ninety-five percent of redhead flocks were above stands of monotypic shoalgrass (Halodule wrightii) vegetation, their primary food source. Redheads fed intermittently throughout the day; most …
A Study Of The Metal Clusters In The Nitrogenase Proteins Of Azotobacter Vinelandii., Melinda Ehrlich Oliver
A Study Of The Metal Clusters In The Nitrogenase Proteins Of Azotobacter Vinelandii., Melinda Ehrlich Oliver
LSU Historical Dissertations and Theses
Electron Paramagnetic Resonance (EPR) spectroscopy was used to examine the paramagnetism of the clusters in nitrogenase from Azotobacter vinelandii. The EPR spectrum of nitrogenase (Av1 and Av2) was examined in the presence of an extrinsic paramagnet, DyEDTA, at different concentrations of NaCl, during thionine oxidation (Av1), and in the presence of MgATP (Av2). Cross combinations of Av1 and Av2 were also investigated in the presence and absence of the chemical cross-linker, EDC as well as with the nitrogenase components from Clostridium pasteurianum. From relaxation enhancement measurements, the distance of closest approach of DyEDTA to the intrinsic metal clusters in Av1 …
The Effects Of Community Building Group Process Intervention Technique On Reading Performance Among Inmates In A Medium Security Prison., Robert Earl Roberts
The Effects Of Community Building Group Process Intervention Technique On Reading Performance Among Inmates In A Medium Security Prison., Robert Earl Roberts
LSU Historical Dissertations and Theses
A substantial body of research has shown that when students work together in groups and are rewarded based on the learning of all the groups members, they achieve consistently more than students who are in traditionally taught classes. The goal of this project was to test the effects of an innovative group process intervention technique on reading performance among a population of incarcerated adult males in a medium security prison in Louisiana. This model, referred to as "Community Building" (CBGP), has been utilized among other ways as an intervention technique to resolve organizational/personnel problems in private, business, university, and government …
The Molecular Basis Of Imidazolinone Herbicide Resistance In Arabidopsis Thaliana Var. Columbia., Kanagasabapathi Sathasivan
The Molecular Basis Of Imidazolinone Herbicide Resistance In Arabidopsis Thaliana Var. Columbia., Kanagasabapathi Sathasivan
LSU Historical Dissertations and Theses
Acetolactate synthase (ALS) is a key regulatory enzyme in the biosynthetic pathway of leucine, isoleucine, and valine. ALS is inhibited by four classes of structurally unrelated herbicides viz. sulfonylureas, imidazolinones, triazolopyrimidines, and pyrimidyl-oxy-benzoate. To understand the molecular basis of imidazolinone resistance, the ALS gene was isolated from an imazapyr-resistant mutant GH90 of Arabidopsis thaliana (Haughn and Somerville, 1990. Plant Physiol. 92:1081-1085). DNA sequence analysis of the mutant gene demonstrated a single point mutation from G to A at the 1958th nucleotide of the ALS coding sequence (Sathasivan et al., 1990. Nucl. Acids Res. 18:2188). This would result in serine to …
The Effects Of Situational Access To Firearms On Sensitivity To Risk Of Criminal Victimization: A Contextual Analysis., Roberta Loupe St. Pierre
The Effects Of Situational Access To Firearms On Sensitivity To Risk Of Criminal Victimization: A Contextual Analysis., Roberta Loupe St. Pierre
LSU Historical Dissertations and Theses
The focus of this research is on the association of the availability of firearms for protection and fear of crime. More specifically, the study explores the relationship of firearms to persons' sensitivity to perceived risk of criminal victimization. The data used were drawn from a state-wide survey of Louisiana residents conducted in 1984. The research was directed by the long-standing inability of researchers to identify any relationship between guns and fear of crime, although it has long been assumed that such a relationship does exist. This study used the innovative strategy of examining fear of crime levels in their relationship …
Measurement Of Galactic Cosmic Ray Proton And Helium Spectra During The 1987 Solar Minimum., Eun-Suk Seo
Measurement Of Galactic Cosmic Ray Proton And Helium Spectra During The 1987 Solar Minimum., Eun-Suk Seo
LSU Historical Dissertations and Theses
The differential cosmic ray proton and helium spectra have been measured during the 1987 solar minimum using a balloon-borne superconducting magnetic spectrometer launched from Prince Albert, Canada. The changing geomagnetic cutoff along the balloon trajectory was observed in the low energy proton data to be about 25% below the nominal calculated values. The measured particle fluxes were approximately equal to the highest fluxes observed at the previous solar minimum in 1977. Above 10 GV the observed spectra are represented by a power law in rigidity with spectral indices of 2.74 $\pm$ 0.02 for protons and 2.68 $\pm$ 0.03 for helium. …
A Study Of The Effects Of Prediction Activities On Instructional Outcomes In High School Genetics., Anne Spratlan Sinclair
A Study Of The Effects Of Prediction Activities On Instructional Outcomes In High School Genetics., Anne Spratlan Sinclair
LSU Historical Dissertations and Theses
The purpose of this study was to examine the instructional effects of incorporating prediction activities in a high school biology genetics curriculum. Criteria for instructional effectiveness included enhanced levels of classroom discussion and interaction, improved subject-related attitude, higher achievement motivation, and greater mastery of genetics concepts. Genetics was chosen as the domain of research because of the multiple variables operating which make it amenable to the making of predictions. Four experienced high school biology teachers taught an experimental and a control class. Students in the experimental classes made written predictions using researcher-developed prediction activities as an introduction to 19 genetics …
A Role Theoretical Model Of Consumer Satisfaction With Professional Services., Teri Root Shaffer
A Role Theoretical Model Of Consumer Satisfaction With Professional Services., Teri Root Shaffer
LSU Historical Dissertations and Theses
The objectives of the dissertation were: (1) examine the relative influence of expectations, performance, and disconfirmation on satisfaction with professional services; (2) assess the relative influence of role based and non-role based dimensions of a professional service on satisfaction; (3) conceptualize and test the influence of consumer role constructs on satisfaction with professional services; and (4) examine the influence of involvement on satisfaction formation for professional services. Prior to seeing their doctor, one hundred and thirty-one orthopedic patients completed a questionnaire concerning their expectations for their own role, the doctor's role, the staff's role, and access mechanisms (non-role based dimensions …