The purpose of this research project was to explore the structural variables of hierarchical reversals, cross generational coalitions, cohesion, and adaptability as they were manifested in families with an alcoholic member, families with a recovered member, and non-alcoholic families. One hundred and twenty-five families responded to written questionnaires including The Family Adaptability and Cohesion Evaluation Scales (FACES III), the Madanes Family Hierarchy Test (MFHT), and a Demographic Questionnaire. Adult participants also completed the Michigan Alcoholism Screening Test (MAST) to ensure that control families had no potentially alcoholic members, as well as ensuring that recovered families had no actively addicted members. Information was obtained on age, ethnicity, educational employment status, family income, and the sex of participating children, to ensure that the three groups were demographically comparable. The statistical analyses confirmed structural family therapy theory and the current research on alcoholic families. The results further expanded the understanding of the nature of coalitions and hierarchical reversals as they were manifested in these samples. / Ph. D. / incomplete_metadata

The objective of this research was to analyze the impact of wives’ employment status and occupation on household expenditures for clothing, when controlling for income and various sociodemographic variables. The sample consisted of 2,285 households selected from the public use tapes of the Quarterly Interview component of the 1980-81 Consumer Expenditure Survey conducted by the Bureau of Labor Statistics. A four-stage econometric analysis of the data included: (1) probit analysis to obtain predicted probabilities of wives’ labor force participation; (2) tobit analysis to predict wives’ wage rates; (3) tobit analyses of six separate clothing expenditure models that contained predicted values from (1) and (2); and (4) tobit analysis of a clothing expenditure model that contained predicted values from (2) in addition to dummy variables for wives’ occupations. The predicted probability of the wife’s employment status was not significant in explaining expenditures for household, women’s, boy’s, or infant’s clothing. Expenditures for men’s clothing were positively affected by an increase in the predicted probability of the wife’s employment, while expenditures for girl’s clothing were negatively impacted by an increase in the predicted probability. Households with women employed in Professional, Traditional, or Uniformed occupations exhibited higher expenditures for clothing than did households with women who were homemakers. / Ph. D. / incomplete_metadata

Dr. Schumacher can be emailed at paul.schumacher@us.af.mil / Presented herein are some analytical results available from regularization of the differential equations of satellite motion. True-anomaly regularization is developed as a special case of a more general Sundman-type transformation of the independent variable (time) in the equations of motion. Constants of the unperturbed motion are introduced as extra state variables, and regularization with several types of coordinates is considered. Because analytical results are sought, those regularizing transformations which produce rigorously linear governing equations are of main interest. When solutions of the linear regular equations in the true-anomaly domain are examined, it is found that the initial value and boundary value problems of unperturbed motion, typically requiring iterative solutions of the time equation, can be solved with only a single transcendental function evaluation per iteration cycle. Various means are described which can accelerate the evaluation of this function. The time equation developed in this study is a new universal relation between time of flight and true anomaly, and applies uniformly to all types of orbits, including rectilinear ones. It is a well-behaved function, the zero of which can be found reliably by Newton's method or other typical iteration methods. Once this time equation has been solved, the initial and final state vector on the transfer arc can be related to each other by rational algebraic formulae; no other transcendental function is needed. When the two problems are generalized by variation of parameters to the case of oblate-gravity perturbed motion, it is found that, to first order, the corrections of the unperturbed solution can be obtained by direct, noniterative formulae valid for all types of orbits. Moreover, it is possible to compute these corrections with only a single extra evaluation of the same transcendental function used in the unperturbed problem. Additional results are also presented, including exact solutions of the first-order averaged differential equations governing secular variations of the regular orbital elements in the true-anomaly domain. Complete universal expressions are given for the Keplerian state transition matrix in terms of the orbital transfer angle, and a simple midcourse guidance scheme is rederived in terms of universal variables valid for all non-rectilinear transfer orbits. / Ph. D. / incomplete_metadata

The Suillus mycota of Nepal was studied. Nine species are recognized and described; five of the nine appear to be new species. Additional species were collected, but material was inadequate to describe them completely. Cultures of eight and synthesized ectomycorrhizae of six of the Suillus species are described. Synoptic keys to the basidiocarps and to the cultures are presented. Numerical taxonomic analyses of the cultures generated clusters which paralleled the species concepts developed using basidiocarps and ecology. Each species of Suillus from Nepal is host specific based on basidiocarp formation; all hosts are in the Pinaceae. Field associations are Suillus cf. granulatus, S. cf. placidus, S. sibiricus, and greening-foot Suillus with Pinus wallichiana; queen's Suillus with P. roxburghii; waxy Suillus with P. patula; and S. laricinus, himalayan Suillus, and orange-pored Suillus with Larix himalaica. Mycorrhizal syntheses confirmed that the six Suillus-Pinus relationships are ectomycorrhizal. The Suillus mycota of western Virginia has 12 known species. Three, of the five which are ectomycorrhizal with Pinus strobus, have closely related counterparts in Nepal. These counterparts are ectomycorrhizal with P. wallichiana, a five-needled pine closely related to P. strobus. The existence of these three pairs of similar fungi, associated with similar pines, suggests the possibility of cladogenic speciation in parallel by the pine lineage and by its ectomycorrhizal fungal associates. Boletinellus merulioides forms abundant sclerotia in nature throughout its range in eastern North America. Sclerotia collected in the forest germinated to form mycelial colonies that had the same appearance and microscopic characteristics as colonies derived from basidiocarps. Sclerotia which had overwintered in the forest were viable in the spring. The spatial pattern of B. merulioides sclerotia in a forest was compared with basidiocarp frequency recorded over four years. Both estimates of the spatial pattern coincided, but year-to-year basidiocarp frequency varied greatly. Individual B. merulioides dikaryons formed large perennial patches. Basidiocarp and sclerotial densities were centered around and declined outward from Fraxinus americana trees. Boletinellus merulioides and Fraxinus pennsylvanica did not form ectomycorrhizae when grown together in growth pouches. / Ph. D.

1,032,438 Jersey and 1,162,578 Holstein official Dairy Herd Improvement Association (DHIA) records from 20,380 and 34,000 herd-years, respectively, were used to compute herd-year means and within herd-year standard deviations for individual mature equivalent (ME) milk, fat, and fat percent. These herd-year means and within standard deviations were used to stratify records into five classes. Regressions for individual daughter's modified contemporary deviation (MCD) on sire's predicted difference (PD) were calculated for each class. The within herd-year standard deviations were also used in some of the six different MCD calculations used to compute six different cow indexes (CI) for each cow and trait. The six MCDs calculated were either the current deviation, log adjusted deviation, or the deviation standardized to a constant variance in combination with either the current correction for contemporaries merit or an adjusted correction. The six different CI for each trait were compared by how accurately they predicted the son's MCD trait and the daughter's MCD trait. / Master of Science

Trucking of forest products is a very important segment of the harvesting process and it is monitored relatively closely by external sources. Load weight is the focal point of the attention received by log hauling. The optimization of load weights is therefore very important to a logging operation's success and this can be achieved only through adequate gross vehicle weight control. Methods of load weight control are reviewed and possible applications discussed in this report. Studies were conducted to evaluate the adequacy of load weight control achieved utilizing two quite different methods. A reporting technique which provided loader operators with information about trends in the delivery weights of trucks which they loaded was used to heighten their awareness of problem areas in load weight distributions. This study was conducted at two southern paper mills with substantially different truck weight regulation environments. Two separate case studies were conducted on Virginia loggers utilizing on-board electronic truck scales. Results of the loading study indicated that the passive treatment had affected the behavior of some of the producers studied. The behavioral changes observed generally improved the economic optimization of load delivery weights. The on-board scale studies indicated that the scale systems did perform well in the applications observed. However, the economic benefits associated with use of the scales were negligible for the two producers studied due to a reduction in delivery weights after installation of the scales. / Master of Science

Sclerotinia crown and stem rot (SCSR), caused by Sclerotinia trifoliorum Eriks., causes serious spring losses in some fall=sown, no-tillage alfalfa fields. In microplots artificially infested with sclerotia, greatest numbers of apothecia were found during November and December. Temperature and rainfall had significant impact on apothecium development. A proposed prediction method for apothecium appearance considers monitoring mean soil temperature. For apothecium initiation to occur, it was necessary for sclerotia to be subjected to an estimated 17 days of temperature at or below 15 C before apothecium production occurred. Soil temperatures were usually below 10 C at the time of apothecium appearance. Greatest numbers of apothecia occurred between 5-10 C. Rainfall influenced the number of apothecia, with significant increases occurring early in the 1984-85 production period. / Master of Science

A new economic model for the evaluation of integrated Design, Production, and Logistic Support Systems (DPLSSs) is designed and developed in this thesis. The DPLSS model was created after a survey of Life Cycle Costing (LCC) applications revealed that no models for assessing integrated design, production, and logistic support systems were available. The evaluation technique the model is based on is called Life Cycle Value Assessment (LCVA). LCVA differs from LCC in that it emphasizes consideration of life cycle revenues as well as costs. The system addressed by the DPLSS model has a life cycle which includes product design, production capability design and construction, production, product distribution, logistic system support and maintenance, and system disposal. The baseline production capability assumed when developing the DPLSS model involves batch processing, forming the base material into individual units, and performing detailed processing operations. It has also been assumed that items produced are non-repairable. The DPLSS model facilitates the evaluation of new DPLSSs by leading managers through the new LCVA methodology, A Cost Breakdown Structure (CBS) which is compatible with the DPLSS life cycle has been developed as a basis for the model. This CBS is used to address DPLSSs descriptively and non-natively during LCVA evaluations. A menu-driven computer program has also been developed to implement the DPLSS model on an IBM PC. This program leads users through the new LCVA-based methodology, performs economic and sensitivity analyses on their inputs, and then allows "what-if?-analyses on varying system configurations to be performed. / Master of Science

The subharmonic instability in two-dimensional boundary layer on a flat plate is analyzed using the parametric instability model and the resonant triad model. The problems arising from both models are solved numerically using the shooting technique and results are presented. It is found that in the presence of a strong interaction (e.g., large amplitude of the two-dimensional wave), results from the resonant triad model are inaccurate as compared with the experimental data and the t results from the parametric instability model. This is mainly because the resonant triad model is a weakly nonlinear model, and it does not account for the modification of the eigenfunctions of the interacting waves which really takes place as we find out from the experiments. The parametric instability model is a powerful model, despite all the assumptions included. The model, however, does not introduce a clear understanding of how the subharmonic mode originates from the three-dimensional Tollmien-Schlichting modes. For a weak interaction results from the resonant triad model and the parametric instability model get close to each other. / Master of Science

Le but de cette recherche consiste à saisir le sens que revêt l'expérience du chaos connue dans le vécu de la création artistique. Dans cette étude, l'expérience du chaos renvoie au moment de doute, de désordre et de remise en question qui survient au fil de la création et correspond, pour la personne qui y prend part, à l'expérience du non-formulé. Pour mener à terme notre recherche, nous avons travaillé en étroite collaboration avec trois artistes professionnels pendant plusieurs mois, et utilisé, en termes de méthodologie, une approche phénoménologique. Le procédé d'analyse que nous avons appliqué repose sur un mode d'explicitation de la structure de l'expérience qui se trouve implicitement dans les données descriptives recueillies. Les résultats de notre analyse dévoilent la structure typique de l'expérience du chaos qui, dans ce contexte, désigne la signification se dégageant de l'expérience du chaos de chacun des artistes co-chercheurs. Cette recherche nous a permis d'observer que le travail d'exploration de l'expérience du chaos a produit, chez les artistes co-chercheurs, un retentissement sur la conscience qu'ils ont de leur démarche créatrice et de l'ensemble de leur vécu. / Québec Université Laval, Bibliothèque 2015