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Neutron Star Magnetic Fields And Implications For Pulsars And Gamma Ray Bursts., Yeming Sang Jan 1990

Neutron Star Magnetic Fields And Implications For Pulsars And Gamma Ray Bursts., Yeming Sang

LSU Historical Dissertations and Theses

Calculations of ohmic decay of neutron star dipolar magnetic fields which are confined to the neutron star crust are carried out. It is shown that the field does not decay exponentially as has been assumed in most analyses of pulsar observations and that if it occupies the entire crust it decays by less than a factor of order 100 in a Hubble time. Fields that are confined to the outer regions of the crust decay faster and again non-exponentially. We also show that the surface magnetic fields of young pulsars may fluctuate and even change polarities on time-scales much shorter …

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Very Highly Excited States Of Two-Electron Systems., Hossein Roshani Sadeghpour Jan 1990

Very Highly Excited States Of Two-Electron Systems., Hossein Roshani Sadeghpour

LSU Historical Dissertations and Theses

The delicate balance that exists between the forces mediating the interaction within multiply-excited electrons and the binding forces of these electrons to the nucleus is totally ignored in the independent particle model of electronic interactions. This dynamical "see-saw" is best described in the hyperspherical representation. We use this method to obtain hyperspherical potential curves, analogous to the Born-Oppenheimer curves of molecular species, for very highly-excited two-electron states of the hydrogen negative ion, helium, and calcium. The present numerical effort exploits the analytic nature of the solutions to the Schroedinger equation at small and large distances to diagonalize the hyperspherical Hamiltonian …

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Studies On Important Volatile Flavor Components In Louisiana Rangia Clam (Rangia Cuneata)., Uraiwan Tanchotikul Jan 1990

Studies On Important Volatile Flavor Components In Louisiana Rangia Clam (Rangia Cuneata)., Uraiwan Tanchotikul

LSU Historical Dissertations and Theses

Important flavor components in Louisiana brackish water clam (Rangia cuneata) were investigated in this dissertation research. Major achievements include: (1) positive identification of the major compound responsible for the objectionable musty/earthy off-flavor in the clam, (2) development of quantitative method to compare the levels of the off-flavor compound in clam samples before and after relaying, and (3) identification of desirable characteristic clam volatile flavor components. The identification of the musty/earthy off-flavor of rangia clam was accomplished by using dynamic headspace sampling (DHS) coupled with high resolution gas chromatography/mass spectrometry (HRGC/MS) in selective ion monitoring (SIM) mode and HRGC aroma perception. …

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Parallelization Of Goal-Driven, Production Systems On Hypercube Machines In A C Environment., Rajendra Kumar Shrivastava Jan 1990

Parallelization Of Goal-Driven, Production Systems On Hypercube Machines In A C Environment., Rajendra Kumar Shrivastava

LSU Historical Dissertations and Theses

Production systems are widely used in artificial intelligence to capture the notion of expertise in modeling expert systems. Production systems are computationally intensive programs spending most of the execution time in their MATCH or recognise phase. Efforts have been made by the research in this dissertation to minimize the production system's execution time by optimizing the MATCH phase. Goal oriented deterministic production systems are commonly used for robotics applications and formed the main class of production systems that were studied in this dissertation. The main motivation for the research was to provide a better MATCH algorithm and use the multiprocessing …

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Biology Of The Twospotted Spider Mite, Tetranychus Urticae (Acari:Tetranychidae) On Several Genotypes Of Soybean And Effects On A Predator Mite, Phytoseiulus Persimilis (Acari:Phytoseiidae)., Jo Ann Canal Wheatley Jan 1990

Biology Of The Twospotted Spider Mite, Tetranychus Urticae (Acari:Tetranychidae) On Several Genotypes Of Soybean And Effects On A Predator Mite, Phytoseiulus Persimilis (Acari:Phytoseiidae)., Jo Ann Canal Wheatley

LSU Historical Dissertations and Theses

In a laboratory experiment with five genotypes of soybean, Glycine max (L.) Merrill, developmental time and fecundity of Tetranychus urticae Koch was measured. Developmental time for virgin females on leaf disks was shortest on Plant Introduction (PI) 227687, 'DSR 352,' and 'Williams.' There were no differences in development time for male mites due to genotype. Females laid more eggs per day on PI 227687 and more total eggs on PI 227687 and 'DSR 352' than on 'Williams,' 'Clark,' and 'Davis.' Life tables were constructed for mite cohorts on each soybean genotype. Values for r, intrinsic rate of increase, ranged from …

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Spinach Carbonic Anhydrase: Primary Sequence, Transport Into Chloroplasts And Expression In Escherichia Coli., Timothy William Fawcett Jan 1990

Spinach Carbonic Anhydrase: Primary Sequence, Transport Into Chloroplasts And Expression In Escherichia Coli., Timothy William Fawcett

LSU Historical Dissertations and Theses

Carbonic anhydrase (CA) catalyzes the reversible hydration of CO$\sb2$. Plant carbonic anhydrases are structurally distinct from those found in animals. In C$\sb3$ plants, the enzyme is located in chloroplasts. To date, little structural information on the enzyme from plants has been available. In this study the full-length cDNA for the spinach chloroplast CA was sequenced. The cDNA contained 1,156 base pairs. The open reading frame encoded a protein of 34,569 daltons. Comparison of the N-terminal sequence of this protein with that of other chloroplast precursors indicated that CA is synthesized as a precursor. The transit peptide likely contains about 60 …

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Molecular Dynamics Of Solutions Containing Water-Soluble Semiflexible Polymer., Mazidah Binti Mustafa Jan 1990

Molecular Dynamics Of Solutions Containing Water-Soluble Semiflexible Polymer., Mazidah Binti Mustafa

LSU Historical Dissertations and Theses

The solution behavior of hydroxypropylcellulose (HPC) was investigated in detail via molecular probe diffusion. The diffusivities of two very different probes, polystyrene latex spheres and sodium fluorescein dye, in aqueous solutions of HPC of three different molecular weights were measured by quasielastic light scattering (QELS) for latex probes and fluorescence photobleaching recovery (FPR) for dye probes. In aqueous HPC, the latex spheres have a tendency to form clusters by adsorption of HPC and bridging of the latex spheres. The microviscosities calculated from the Stokes-Einstein relationship using the bare spheres radii exceeded the measured shear viscosities from cone and plate and …

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Designing Efficient Algorithms For Distributed Systems., Mohan B. Sharma Jan 1990

Designing Efficient Algorithms For Distributed Systems., Mohan B. Sharma

LSU Historical Dissertations and Theses

Search for efficient algorithms for distributed systems has become an important area of computer science. This research is driven by the need to efficiently process and communicate information generated by the system. In distributed systems, topological information plays an important role in the design of fast algorithms for problems such as routing, broadcasting, and sorting. The central focus of this dissertation is the design and analysis of distributed algorithms for determining topological information in asynchronous communication networks. Specifically, we present distributed algorithms for two generic problems: distributed graph problems and network traversal problems. Network location and network recognition are two …

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Theoretical Description Of Doubly Excited States Of Molecular Hydrogen., Byungduk Yoo Jan 1990

Theoretical Description Of Doubly Excited States Of Molecular Hydrogen., Byungduk Yoo

LSU Historical Dissertations and Theses

The present study focusses on presenting a global picture to theoretically describe the singly- and doubly-excited states of molecular hydrogen. The non-iterative eigenchannel R-matrix method and multichannel quantum defect theory have been combined for understanding the physics of the wide range of energy and internuclear distances in a unified manner. In this dissertation ab initio calculations for $\sp{1}\Sigma\sb{g}$, $\sp3\Sigma\sb{g}$, $\sp1\Sigma\sb{u}$ and $\sp3\Sigma\sb{u}$ symmetries of hydrogen molecule are performed to test the present approach. The body-frame quantum defects are expected to be mild on energy, but found to be strongly dependent on both energy and internuclear distances in this problem. The …

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The Relationship Of Sequential Patterns To The Music Teaching Effectiveness Of Elementary Education Majors., Judy Kay Bowers Jan 1990

The Relationship Of Sequential Patterns To The Music Teaching Effectiveness Of Elementary Education Majors., Judy Kay Bowers

LSU Historical Dissertations and Theses

The purpose of this study was to examine the relationship of sequential patterns of instruction (a direct instruction teaching cycle) and the individual components of these patterns to overall teacher effectiveness of music lessons taught by elementary education majors. Sequential patterns included (1) teacher task presentation, (2) student response, and (3) teacher reinforcement. A second focus of the study was the comparison of two instructional methods for providing training in the use of sequential patterns of instruction. Students enrolled in three sections of a music methods course for elementary education majors served as subjects. All subjects completed five teaching tasks …

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Fission Track Thermochronology: Methods And Applications In Tectonics., Steven Matthew Jones Jan 1990

Fission Track Thermochronology: Methods And Applications In Tectonics., Steven Matthew Jones

LSU Historical Dissertations and Theses

Time, temperature and the kinetics of reactions are the basic ingredients in this study of thermal history analysis. Unraveling the timing of geological events using absolute dating systems based on radioactive decay is not a trivial task, ages given by most radiometric dating techniques (e.g. fission track analysis) are apparent ages, related to cooling through some characteristic temperature range. Fission tracks are atomic-scale defects in a crystal caused by the passage of fragments from the fission of uranium-238. In apatite, fission tracks are destroyed by annealing at temperatures between $\sim$70$\sp\circ$C and $\sim$125$\sp\circ$C. A quantitative understanding of the kinetics of track …

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Small Sample Properties Of Estimators And Test Statistics In Nonlinear Regression: The Box-Cox Transformation., Minbo Kim Jan 1990

Small Sample Properties Of Estimators And Test Statistics In Nonlinear Regression: The Box-Cox Transformation., Minbo Kim

LSU Historical Dissertations and Theses

The dissertation will address small sample properties of estimators and test statistics in a nonlinear regression model. The Box-Cox transformation is attractive to economists because a family of functional forms can be compared simultaneously within the framework of classical statistical inference. Usually, maximum likelihood (ML) methods are used to estimate the Box-Cox model. In the present study, nonlinear two stage and iterative generalized least squares (IGLS) method are considered. The accuracy of probability statements concerning nonlinear models is often questionable in small samples. Therefore, the finite sample distribution of the asymptotic t-statistic in the Box-Cox model is derived using an …

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Usage-Dependent Information Systems Design., Jin-Soo Kim Jan 1990

Usage-Dependent Information Systems Design., Jin-Soo Kim

LSU Historical Dissertations and Theses

Usage-dependent phenomenon has been commonly observed in computer information systems (CIS). Since the performance of CIS greatly depends on the phenomenon, how to model it is an important CIS design issue. A usage process model (the Simon-Yule model) for modeling the usage--dependent phenomenon is proposed. The model is modified and successfully applied to the performance evaluation of self-organizing linear search heuristics. Analytical and empirical results indicate that the model provides a realistic performance evaluation of the heuristics and presents a solution to the research open problems which have been unsolved for more than two decades. Furthermore, the results lead to …

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Evaluation Of The Crawfish Chitin-Carotenoid Complex And Its Nutritional/Pigmentation Effect In Poultry Diets., Keun Soo Lee Jan 1990

Evaluation Of The Crawfish Chitin-Carotenoid Complex And Its Nutritional/Pigmentation Effect In Poultry Diets., Keun Soo Lee

LSU Historical Dissertations and Theses

The present investigation involved utilization of the chitin-carotenoid complex and the whole meal derived from crayfish (Procambarus clarkii) composite byproduct, in controlled broiler diets to determine the biological value of these substrates as potential sources of growth promoters, red intensifying agents, and protein supplements. Included are basic studies of the unique characteristics of the chitin-protein and chitin-carotenoid complexes. The crawfish chitin-carotenoid substrate did not exhibit any deleterious effects on broiler growth performance in terms of animal weight gain and feed efficiency at levels up to 5% of the total diet. Controlled chitin addition to the diet indicated no apparent relationship …

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Low-Temperature Oxidation Of Silicon Using Point-To-Plane Corona Discharge., Mohammad Reza Madani Jan 1990

Low-Temperature Oxidation Of Silicon Using Point-To-Plane Corona Discharge., Mohammad Reza Madani

LSU Historical Dissertations and Theses

A technique for low temperature oxidation of silicon in dry oxygen ambient at temperatures between 25$\sp\circ$C to 500$\sp\circ$C using negative point-to-plane corona discharge is developed. The oxidation rate is a strong function of temperature is found to increase significantly in comparison with the conventional thermal oxidation rate. For the thicker films, the refractive index of the grown oxide layer approaches the value obtained for high temperature thermally grown oxide. The effects of some independent process parameters such as time, temperature, and ion current on the oxidation of silicon are studied. The electrical quality of the grown oxide film is investigated. …

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I. Temporal Compression In Chirped Pulse Regenerative Amplification. Ii. Picosecond Time-Resolved Raman Study Of Excited State Charge Transfers., Yong Joon Chang Jan 1990

I. Temporal Compression In Chirped Pulse Regenerative Amplification. Ii. Picosecond Time-Resolved Raman Study Of Excited State Charge Transfers., Yong Joon Chang

LSU Historical Dissertations and Theses

The chirped pulse regenerative amplification in Nd:YAG lasers is demonstrated to be able to provide picosecond optical pulses with $\sim$gigawatt peak powers at a repetition rate of 2kHz. By taking advantage of the effects of gain narrowing and gain saturation in the regenerative amplifier, it is shown that the chirped amplified pulse width can be varied systematically from $\sim$12ps to 150ps. These high peak power pulses were utilized to perform several picosecond time-resolved resonance Raman spectroscopic experiments. One study involves the investigation of excited state electron transfer in symmetric and asymmetric polypyridineruthenium(II) complexes. The competing influences of solvent relaxation, vibrational …

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Determination Of Allelochemicals In The Environment Surrounding Ceratiola Ericoides., Elizabeth Douglas Jordan Jan 1990

Determination Of Allelochemicals In The Environment Surrounding Ceratiola Ericoides., Elizabeth Douglas Jordan

LSU Historical Dissertations and Theses

As part of an investigation into the allelopathic interactions of members of the Florida scrub community of plants, the release of allelochemicals by the Florida wild rosemary, Ceratiola ericoides (Empetraceae) was monitored. Aqueous extracts of whole leaves, water-rinses of leaves, aqueous litter extracts, and aqueous soil extracts were monitored monthly, or twice monthly in the summer months, for the dihydrochalcone ceratiolin, its decomposition product hydrocinnamic acid, the microbial degradation product of hydrocinnamic acid, acetophenone, and trans-cinnamic acid. High performance liquid chromatography was used to quantify the four compounds. The amounts of ceratiolin, hydrocinnamic acid, acetophenone, and trans-cinnamic acid in the …

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Root Growth, Root Function, And Water Relations Of Shortleaf Pine (Pinus Echinata Mill.) Bare-Root Seedlings Transplanted Into Different Edaphic Environments., John Closs Brissette Jan 1990

Root Growth, Root Function, And Water Relations Of Shortleaf Pine (Pinus Echinata Mill.) Bare-Root Seedlings Transplanted Into Different Edaphic Environments., John Closs Brissette

LSU Historical Dissertations and Theses

Root growth and its effects on water uptake and plant water relations of seedlings during the initial weeks after transplanting were studied. One-year old bare-root shortleaf pine seedlings were put into six different root zone environments defined by the factorial arrangement of two temperatures and three levels of soil water potential. Needle water potential and stomatal conductance were measured 28 days after planting. The next day, root system absorptive capacity was evaluated by forcing water at a constant hydrostatic pressure through detopped seedlings. The projected surface area of old and new roots was then measured. Also, the relative water content …

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The Dynamical Behavior Of Rodlike Polymers In Concentrated Solutions., Larry Mark Delong Jan 1990

The Dynamical Behavior Of Rodlike Polymers In Concentrated Solutions., Larry Mark Delong

LSU Historical Dissertations and Theses

In chapter One, zero angle depolarized light scattering methods for particle size determinations are demonstrated by a study on aqueous colloidal suspensions of titanium dioxide. Previous results on a poly(tetrafluoroethylene) latex suspension are also briefly recounted and updated to include reanalysis by an additional independent Laplace inversion method, Provencher's CONTIN. Size distributions may be obtained by Laplace inversion of the correlation functions, with excellent agreement among the various Laplace inversion algorithms. Resolution is greatly enhanced, since rotational motions, which are more sensitive to size than translational motions, are detected at zero angle. In Chapter Two, combined static and quasielastic light …

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Stress Begins In Kindergarten: A Look At Behavior During Standardized Testing., Pamela Owen Fleege Jan 1990

Stress Begins In Kindergarten: A Look At Behavior During Standardized Testing., Pamela Owen Fleege

LSU Historical Dissertations and Theses

Children's behavior during standardized achievement testing was explored through a qualitative study of two kindergarten classrooms. The subjects were 36 kindergarten children (10 Black, 26 white; 17 males, 19 females). Data were collected through observations in the classrooms; interviews with children, teachers, and principals; and video taping of the children before, during, and after standardized achievement testing. Findings indicated an increase in behaviors reported to be stress related during the testing situation and a decrease in those behaviors following the testing period. Other frequently observed behaviors included copying and calling out answers during the administration of the test. In addition, …

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Particle Production Characteristics In Central Nucleus-Nucleus Collisions At 14.6, 60 And 200 Gev/Nucleon., Oscar Edwin Pruet Jan 1990

Particle Production Characteristics In Central Nucleus-Nucleus Collisions At 14.6, 60 And 200 Gev/Nucleon., Oscar Edwin Pruet

LSU Historical Dissertations and Theses

Nuclear emulsions have been exposed to a series of relativistic heavy ion beams at Brookhaven National Laboratory ($\sp{16}$O and $\sp{28}$Si nuclei at 14.6 GeV/nucleon) and CERN ($\sp{16}$O nuclei at 60 and 200 GeV/nucleon and $\sp{32}$S nuclei at 200 GeV/nucleon). These beams represent the highest energies currently available for heavy projectiles. Central collisions between the beam nuclei and the heavy emulsion components $\sp{108}$Ag and $\sp{80}$Br have been compared with proton-emulsion data at equivalent energies. The multiplicities of produced charged particles are generally consistent with a conservative superposition model of nucleus-nucleus interactions. The pseudo-rapidity distributions of produced particles are gaussian in their …

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Handel's English Oratorio Arias Based On Biblical Sources: An Annotated Catalogue. (Volumes I And Ii)., William Randall Richardson Jan 1990

Handel's English Oratorio Arias Based On Biblical Sources: An Annotated Catalogue. (Volumes I And Ii)., William Randall Richardson

LSU Historical Dissertations and Theses

The oratorios of George Frideric Handel (1685-1759) contain many outstanding arias. The typical aria is ordinarily diatonic and is a combination of symmetrical and asymmetrical phrase-lengths. Although sharing the same basic musical style, these arias are often quite different. Their ranges extend from the interval of a minor seventh to two octaves and sixty-six percent of them are set in forms other than da capo. In addition, the oratorio arias display a diversity of orchestration ranging from continuo arias to those that call for as many as eighteen different instruments. The main body of this paper is contained in chapters …

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Factors Influencing The Selection Of Business Majors As Perceived By University Business Students., E. Evaline Echols Jan 1990

Factors Influencing The Selection Of Business Majors As Perceived By University Business Students., E. Evaline Echols

LSU Historical Dissertations and Theses

The objectives of this study were to: describe business majors in Tennessee universities affiliated with the National Association of Business Teacher Education (NABTE), compare the demographic characteristics of business students among groups of majors, determine the perceived degree of desirability of various business majors, determine the perceived influence of various factors on the selection of a college major by business students and groups of business majors, determine why business students did not choose business teacher education as a major, determine student perceptions toward careers and majors, and compare student perceptions toward careers and majors among different groups of business majors. …

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Salesperson Performance, Satisfaction And Turnover: A Review, A Reconceptualization And An Empirical Investigation., Debbie S. Easterling Jan 1990

Salesperson Performance, Satisfaction And Turnover: A Review, A Reconceptualization And An Empirical Investigation., Debbie S. Easterling

LSU Historical Dissertations and Theses

Search for a meaningful relationship between job satisfaction and job performance has continued for more than three decades. Despite ongoing theoretical, empirical and practical interest, research findings have been inconclusive. Literature reviews indicate that there still exists much confusion concerning the relationship between satisfaction and performance. Three conceptualizations of the relationship between satisfaction and performance have been proposed: (1) satisfaction is an antecedent of performance (a view associated with the early "human relations" school of thought); (2) the view that performance leads to satisfaction (through its impact on intrinsic and extrinsic rewards); and (3) the view that the relationship between …

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Variability Of Practice And The Contextual Interference Effect In Motor Skill Acquisition., Kellie Green Hall Jan 1990

Variability Of Practice And The Contextual Interference Effect In Motor Skill Acquisition., Kellie Green Hall

LSU Historical Dissertations and Theses

The relationship between variability of practice and contextual interference was investigated in this study. The hypothesis proposed here was that these two effects are compatible, in that each addresses different learning situations. That is, the contextual interference effect relates only to situations where skill variations are controlled by different generalized motor programs, while practice variability relates only to situations where skill variations are parameter modifications of the same generalized motor program (Magill & Hall, in press). To test this compatibility hypothesis, two experiments were reported that were based on Wulf and Schmidt (1988). Blocked and random practice schedules were added …

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The Time Series Behavior Of Intradaily Stock Prices., John Joseph Hatem Jan 1990

The Time Series Behavior Of Intradaily Stock Prices., John Joseph Hatem

LSU Historical Dissertations and Theses

This dissertation investigates the time-series properties of intradaily stock prices. It provides a model of the return generating process that is capable of incorporating not only such institutional constraints as the specialist's bid-ask spread, but also the presence of dependence in the conditional variance. It extends the literature by introducing a conditional error distribution, the power-exponential, that adequately accounts for not only leptokurtosis but also peakedness in the empirical distribution. Evidence is presented that suggests intradaily returns are best modelled as a mixture of distributions. Furthermore, it documents the inability of information proxies, such as volume or the number of …

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Neutral Impurity Scattering In Semiconductors., Kwok Chuen Kwong Jan 1990

Neutral Impurity Scattering In Semiconductors., Kwok Chuen Kwong

LSU Historical Dissertations and Theses

Neutral impurity scattering is a relatively untouched subject because it is only significant at very low temperatures. With the development of a new class of impurity band conduction devices that operate at cryogenic temperatures, it becomes necessary to describe the scattering in a more realistic fashion. We have calculated both elastic and inelastic scattering of electrons by substitional As in n-type Si, taking into account the anisotropy of the host band structure. Specifically, in regard to inelastic scattering, we calculated the differential and integrated cross sections for transitions from the ground state to the valley-orbit split states $\Gamma\sb{15}$ and $\Gamma\sb{12}$. …

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Measurement Of Positron-Electron Going To Baryon-Antibaryon Forward-Backward Charge Asymmetry., Jit Ning Lim Jan 1990

Measurement Of Positron-Electron Going To Baryon-Antibaryon Forward-Backward Charge Asymmetry., Jit Ning Lim

LSU Historical Dissertations and Theses

This dissertation describes the measurement of the forward-backward charge asymmetry, A$\sb{\rm b}$, for e$\sp{+}$e$\sp{-} \to$ bb at TRISTAN by the AMY detector. A measurement of the ratio, R$\sb{\rm b}$, of the cross section for e$\sp{+}$e$\sp{-} \to$ bb to the theoretical QED cross section for e$\sp{+}$e$\sp{-}\ \to\ \mu\sp{+}\mu\sp{-}$ is also obtained. A$\sb{\rm b}$ is an effect of the weak-electromagnetic interference. The measurement of A$\sb{\rm b}$ is therefore a direct test of the standard model electroweak theory. TRISTAN is the only e$\sp{+}$e$\sp{-}$ collider in the world to explore the center-of-mass energy region of 50 GeV to 62 GeV, where the effects of …

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Parametric Motion Transducer For Gravitational Wave Detectors., Odylio Denys De Aguiar Jan 1990

Parametric Motion Transducer For Gravitational Wave Detectors., Odylio Denys De Aguiar

LSU Historical Dissertations and Theses

We designed, constructed, and tested (using two different low phase noise electrical pump generators) a cryogenic double-resonant parabridge motion transducer made out of niobium, whose electrical output was amplified by a two stage MESFET cryogenic amplifier. Most of the experimental results agreed well with the theoretical models, and we successfully measured the mechanical Brownian motion of this transducer. We were able to adjust the two electrical bridge resonant frequencies on top of each other at the pump frequency, allowing us to obtain an electromechanical coupling as high as 0.054. This high coupling, corresponding to an rms electric field strength of …

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A Study Of Nursing Orientation In Two Urban Hospitals. (Volumes I And Ii)., Myrna Harris Cassimere Jan 1990

A Study Of Nursing Orientation In Two Urban Hospitals. (Volumes I And Ii)., Myrna Harris Cassimere

LSU Historical Dissertations and Theses

This case study described the perceptions of participants during an orientation program in two urban hospitals. The conceptual framework of the study is based on the social systems theory of administration by Getzels and Guba (1957). Four propositions were used to guide interviews and observations for data collection. Data analysis was accomplished by the pattern matching technique described by Yin (1984). The study propositions were supported by the data. The participants of the study included new graduates and experienced nurses. The institutions involved and their orientation programs were perceived in a positive manner by the participants. Orientation instructors were perceived …

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