Theses and Dissertations from UMD
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Item The Folklore and Life of My Native Country in Pictorial Terms(1967) Al-Harithi, Naziha Rashid; Maril, Herman; Art; Digital Repository at the University of Maryland; University of Maryland (College Park, MD)The content of this thesis exhibition is involved in exploration of the folklore and life of the people of my native country in terms of a more contemporary painting language. Color symbols and patterns play a great role in these concepts.Item Land Use in Charles County(1962) Langen, John S.; Van Royen, W.; Geography; Digital Repository at the University of Maryland; University of Maryland (College Park, MD)The land use of Charles County does not basically differ from that in the past. Land in forest and land in farms are the two categories of land utilization. The great demand for tobacco on the overseas markets in the early days of the county's history, led to the introduction of this crop. Because of the favorable climate and soils, tobacco became soon the mainstay of the county's economy, a situation which still exists today. The purpose of the thesis was to determine which geographical factors and others accounted for the use of the land. In addition to field work, use was made of detailed statistical data. It was found, that the county could be divided into three sections. In the western section, land in forest was the dominating land use form. In the central section, land in forest and land in farms were about equal in areal extent, whereas in the eastern section, land in farms dominated. The reason was that soils in the western part became exhausted, and a shift to the eastern section took place. Landforms contributed much to the distribution of land in crops, especially for tobacco. Recently, a change in the use of the land is taking place. The encroachment of the Washington Metropolitan area, and the building of a major highway, connecting the North with the South, have induced farmers to sell their lands, which are converted into residential areas.Item Juvenile Delinquency and the Negro in Charles County, Maryland(1966) Seaman, Thomas W.; Lejins, Peter P.; Sociology; Digital Repository at the University of Maryland; University of Maryland (College Park, MD)Are there differences between Negro and white juvenile delinquents? This was the question that constituted the basis for this exploratory study. The objectives of the project were to determine if Negro juveniles were proportionately overrepresented among juvenile delinquents and if there were differences in types of offenses committed by Negro and white delinquents. The differences found were analyzed in the light of socio-economic class differences between Negro and white delinquents. Previous research has tended to indicate that racial differences disappeared when socioeconomic class was held constant. The area selected for the project was Charles County, Maryland, because of the writer's access to court records and knowledge of the area. Delinquency rates were developed to determine if Negroes were proportionately overrepresented among delinquents and/or if lower class juveniles were overrepresented among delinquents. Delinquent offenses were divided into four types: offenses involving theft or attempted theft of property, offenses involving violence, offenses involving the destruction of property, and offenses injurious to the child himself. Delinquency rates were developed for Negro and white delinquents in each socio-economic class for each type of offense. A simple ecological investigation was conducted to determine if there were any significant patterns in the spatial distribution of the delinquents. The findings show that Negro juveniles were not significantly overrepresented among delinquents even though Negro delinquents were overrepresented among lower-lower class delinquents. White delinquents were found to be overrepresented among delinquents from the lower-middle and upper-lower classes. The analyses of types of offenses revealed that types of offenses could be identified with certain levels of the socio-economic structure regardless of race, but that differences existed between Negro and white delinquents within socio-economic classes. The ecological investigation indicated that there was no significant ecological pattern among county delinquents.Item A Comparative Study of Certain Personality Characteristics of College Women Participating in Basketball and Modern Dance(1965) Bird, Anne Marie; Johnson, Warren R.; Health Education; Digital Repository at the University of Maryland; University of Maryland (College Park, MD)Twenty-five college women attending the University of Maryland during the spring semester of 1963 were studied in an effort to determine whether or not there were any identifiable personality characteristics among those (14) who chose to participate in basketball, as compared to those (13) who chose to participate in modern dance. The subjects used in this study voluntarily chose the activity in which they participated. The California Psychological Inventory was used to evaluate the personality characteristics of the subjects. Analysis of the data showed that the basketball group scored significantly higher, at the 5 percent level of confidence, on the community scale. The modern dance group scored significantly higher, at the 5 percent level of confidence, on the scales measuring flexibility and femininity. A comparison of the group means for all other scales proved insignificant at the 5 percent level of confidence.Item Inter-Ethnic Relations on New England's Frontier: A Survey of the Formative Period(1969) Cole, Robert A.; Van Ness, James S.; History; Digital Repository at the University of Maryland; University of Maryland (College Park, MD)In many respects, the form and progression of the New England frontier reflects a collision, of sorts, between two disparate peoples and their two divergent cultures. As the European confronted the native American in the wilderness setting, it soon became apparent that the demise of the Indian culture was inevitable, the only salient question being as to the nature of its decline. A close examination of early Seventeenth Century relations shows the English as ambitious and militant expansionists who not only rejected the idea of cultural coexistence, but, in regarding the Indian solely from a European frame of reference, failed to make any substantial progress toward a theory of toleration. The English were highly organized, strongly motivated, and eminently successful in their pursuit of the long range goals of settlement; and it is the very cohesiveness of the Puritan frontier which best illuminates the fateful dilemma of the indigenous population. While fragmented by tribal particularism and internecine warfare, the native New Englanders were beset on all sides by enemies, European and Indian. Though willing, at first, to contest a permanent European colonial effort, their cultural resiliency was undermined by disease, and a multiplicity of negative factors which developed as their relationships with the English settlements moved toward interdependency. As the confrontation moved into the climactic period following the Pequot War, the weight of the English presence had already brought about irreversible trends in the Indian way of life. With his lands diminishing under the pressure of two converging lines of frontier settlement, he was finally left, with two impractical options, acculturation or resistance. Both charted a course to futility.Item The Influence of Jacob Bryant on William Blake(1969) Svatik, Stephen Jr.; Howard, John; English; Digital Repository at the University of Maryland; University of Maryland (College Park, MD)To understand William Blake's complex mythology, one must understand the sources of his theories. A primary source of mythic material in the eighteenth century was the research and writings of the antiquarians, principally of Jacob Bryant. Blake shared with the antiquarians a desire to understand the origins of man and of the development of man's political and religious institutions. But while the mythographers concentrated on giving simply a temporal account of the development of man and society, Blake expanded on their accounts of history by analyzing the importance of inner man in the development of his social institutions. In A New System, Jacob Bryant discusses three points of mutual interest for Blake. First, he dismisses Greek mythology for having corrupted the truth concerning man's past. Second, he attributes the degeneration of religion to man's error of materialism. And third, he discusses the fragmentation of society and man's subsequent fall from an earlier period of unity, freedom, and peace. Blake's writings contain concepts similar to those of Bryant, but Blake modified and refined them to fit into his unique mythological structure. Blake's most significant departure from Bryant is his paralleling of man's social and political conflicts with man's failure to maintain an equilibrium of his inner essences in his establishing a ratio between the inner man and the outer world. Blake's mythopoeic imagination surpasses those of Bryant and the antiquarians in meaning and significance when he goes on to forsee man's return to unity, to a Golden Age of freedom and peace.Item Slaveholding and Indentured Servitude in Seventeenth Century Maryland, 1674-1699(1968) Payne, Philip Marshall; Land, Aubrey C.This thesis is concerned with the characteristics of slaveholding and indentured servitude in seventeenth century Maryland, so far as these can be delineated from quantitative data. on the basis of a quantitative analysis of personal estates in the Inventories and Accounts of the Probate Court, several conclusions are apparent . These can best be stated in summary form in six propositions . First, estates with bond labor (slaves and/or servants) decreased from 36 per cent of the total number of estates during the period 1674 to 1679 to 24 per cent in 1695 to 1699. Second, the percentage of estates with slaves (slaves only or slaves and servants) increased from 24 per cent of those estates with bond labor in the period 1674 to 1679 to 72 per cent in 1695 to 1699. Third, the average number of slaves per estate (of those estates holding slaves) increased from 2.89 in the period 1674 to 1679 to 5.50 in 1695 to 1699. The average number of servants per estate (of those holding servants) decreased from 2.88 in the period 1674 to 1679 to 2.15 in 1695 to 1699. Fourth, those who invested 0 to 20 per cent of their total income in bond labor decreased, while those who invested 21 to 40 per cent of their total income in bond labor remained fairly constant. Those who invested 41 to 70 per cent of their total income in slaves and/or servants increased during the twenty-six year period. Fifth, there appeared to be a concentration of slaves in the hands of the wealthy. over the twenty-six year period, 17.6 per cent of the estates with bond labor held 52.2 per cent of the total number of slaves. Sixth, the average value of male slaves during the period was between L21 and L25; the average value of a female slave was Ll6 to L20 for the first several decades and L21 to L25 for the last decade. The average value for servants ranged from Ll to LlO, with the value increasing as the time of service increased.Item The Genera Hemiberlesia and Abgrallaspis in North America with Emphasis on Host Relationships in the H. Howard (Cockerell) Complex (Homoptera: Coccoidea: Diaspididae)(1960) Davidson, John Angus Sr.; Bickley, William E.; Entomology; Digital Repository at the University of Maryland; University of Maryland (College Park, MD)The work reported consists of revisionary studies of Hemiberlesia Cockerell 1897 and Abgrallaspis Balachowsky 1948 in North America. The interpretation of North America is that of Ferris (1937), "all the mainland from the Arctic regions to and including the Panama Canal Zone." According to Ferris (1942), Hemiberlesia contained 15 species. As a result of this study, only eight of these species are here referred to Hemiberlesia. They are: rapax (Comstock), lataniae (Signoret), popularum (Marlatt), ignobilis Ferris, cupressi (Cockerell), diffinis (Newstead), candidula (Cockerell), and palmae (Cockerell). The species H. coniferarum (Cockerell) is newly assigned having previously been placed in Diaspidiotus Berlese and Leonardi, by Ferris. A tenth species, H. pseudorapax McKenzie, was assigned to this genus by its author. Seven of the 15 species have been assigned to Abgrallaspis. Both these genera appear to be North American in origin. Abgrallaspis was originally created for six species. Three of these occur in North America and were transferred from Hemiberlesia by Balachowsky. They are: palmae (Cockerell), degeneratus (Leonardi), and cyanophylli (Signoret). The last named species was designated as the genotype. Balachowsky (1953) later reassigned palmae to Hemiberlesia and transferred four more North American Hemiberlesia species to Abgrallaspis, namely, howardi (Cockerell), comstocki (Johnson), coloratus (Cockerell), and fraxini (McKenzie). A study of these species in the National Coccoid Collection revealed a complex centering about A. howardi as conceived by Ferris (1938). Usual morphological comparisons of slide mounted adult females failed to yield results, therefore, host transfer experiments were undertaken. A population of "howardi" of Ferris was secured on pachysandra. A total of 2,700 individual crawler transfers were then made to 20 different host plants. These hosts had been chosen because a preliminary study indicated unusual character variation in specimens collected from them. Fourteen of the test hosts (largely ornamentals) were later found to be infested with 14 to 54 per cent of the transferred crawlers. These crawlers were allowed to mature. Adult females were then collected and mounted for study. Six host plant species were completely unacceptable to infestation by the transferred crawlers. Five of these were plum, pear, peach, apple, and pine. A. howardi was described from plum in Colorado, and later recorded from such hosts as pear, peach, and apple. A study of the species Ferris synonymized with A. howardi revealed the test population to be A. townsendi (Cockerell), which was described from an unknown host in Mexico, and later recorded from a long list of ornamentals primarily in the southern and eastern United States. This species is redescribed and the name revalidated. A table is presented showing the variations found in salient taxonomic characters of A. townsendi collected from 14 different experimental host plants. Important variations in the size of the second lobes of A. townsendi were recorded. Second lobe reduction from three-fourths the length of the median lobes to mere hyaline points was observed. Specimens in the last category strongly resemble Diaspidiotus ancylus (Putnam). Aside from these second lobe variations, A. townsendi is a relatively stable species from the standpoint of host determined morphological variables. Avocado was the sixth test host on which transferred crawlers would not develop. Long series of scales from this host are present in the National Collection. They were collected from avocado fruit in quarantine at Texas, from Mexico. This species, A. perseus Davidson, is described as new herein. As here understood for North America, Abgrallaspis contains 13 species. Six were placed in this genus by Balachowsky, and seven by the writer. The last are: flabellata (Ferris) from Hemiberlesia; quercicola (Ferris) from Hemiberlesia; mendax (McKenzie) from Hemiberlesia; oxycoccus (Woglum) from Aspidaspis Ferris; ithacae (Ferris) from Aspidaspis; perseus Davidson as a new species; and townsendi (Cockerell) as a revalidated name. A brief presentation of materials and methods utilized in the host transfer experiments is followed by a discussion of the structural characters used in this work. Descriptions of Hemiberlesia and Abgrallaspis are accompanied by keys and descriptions to all the species in North America. Figures of adult female pygidial characters and scale coverings are provided for all species considered in these two genera.Item A Study of International Farm Youth Exchange Delegates Who Visited Latin America(1960) Blum, Lee Ann Leet; Wiggin, Gladys A.; Education; Digital Repository at the University of Maryland; University of Maryland (College Park, MD)A. Statement of Problem The problem of this thesis is to study the nature and prediction of adjustment to foreign culture of 24 American International Farm Youth Exchange delegates. Specifically, this thesis is designed to answer the following questions: 1. What was the nature of adjustment or the 24 subjects as determined through: a. An analysis of a questionnaire administered on return from the foreign visit. b. An analysis of correspondence during the foreign visit. 2. Could the nature or the adjustment have been predicted prior to the foreign visit by materials available in: a. Application form for foreign visits. b. Supplementary biographical data. A secondary purpose of this thesis is to review the literature relating to technical and/or student exchange programs of: 1. Foreign nationals in the United States. 2. Americans in other countries. B. Procedures 1. Selection of the Group from which Population Was Drawn A group of 1010 IFYE delegates who have visited a total of 59 different countries and Puerto Rico was the population from which the sample was drawn. Due to the variety of country cultures represented and the world coverage, it was decided to simplify and centralize the population. The 133 delegates who visited the 18 Latin American countries were selected to represent the group. Latin American countries were selected because of their similar cultural and religious background. Since information on file was to be used in the study, it was essential to select only those del egates with comparable data. Comparable data were available for delegate participants during the years 1955-57. As so limited, the group numbered 64. 2. Criterion for Selecting Population The next step was to determine whe ther the 64 subjects could be categorized at the outset into most and least adjusted to the foreign culture visited, on the basis of material available after return. The answer to question number 19 on the Individual Report Form was selected as the item to be used for categorizing. For categorizing question 19, eight individuals were asked to serve as raters. Four raters had only a slight knowledge of the IFYE program and four raters were past participants in the IFYE program. Each rater was given the group of 64 Individual Report Forms and asked to categorize question 19 in one of three categories. These categories were: (1) Least Adjusted, (2) Medially Adjusted, and (3) Most Adjusted. No criteria were given the rater to influence his placement. The categorizing was used as an attempt to see if a significant pattern could be recognized. For the purpose of this study, it was decided that the following method be used in classifying subjects: a. Each subject must appear in the least adjusted or in the most adjusted category a minimum of four times (which means that at least half of the raters thought that the subject was either least adjusted or most adjusted). b. The subject was not to appear in the least adjusted category if classified in the most adjusted category, and vice versa. c. The subject might appear in the medially adjusted category and still be used for the most or the least adjusted category if qualifications for step (a) listed here were fulfilled. After all raters had completed their categorizing, tabulations were made and it was found that 11 subjects in the least adjusted category and 13 subjects in the most adjusted category could be used in this study. Complete categorizing of the 64 subjects can be found in Appendix A. 3. Procedures for Analysis of Data a. Nature of Adjustment Question number 19 of the Individual Report Form was used to categorize the subjects into groups of most adjusted and least adjusted. The question reads as follows: "Of all things that were new and different to you, which were difficult or disagreeable to adjust to?" The Individual Report Form appears in Appendix B. The 24 subjects' responses to the question appear in Appendix G. Answers were available to all other questions on the report and an analysis will be made in this study of all questions relating to the nature of adjustment. Correspondence received from the delegates while visiting in the foreign country was available in individual files. An analysis of the correspondence indicated that delegates report a variety of news. The nature of news reported is available for study in relationship to the delegates' adjustment in the foreign culture. b. Prediction of Adjustment Adjustment while in the host country is of special interest to the officials of the IFYE program. To be able to predict adjustment of a delegate to his host country before actually participating in the program would be of great value to IFYE. This study is designed to investigate available pre-participation background information on each subject. The available information on file relates to: (1) Delegate Application Form (to be found in Appendix c) and (2) Delegate Biographical Form (to be found in Appendix D). The purposes of this study are to investigate the background information listed above and to test for significant relationship of nature of adjustment in the foreign country.Item The Determination of Preferred Orientation in Rolled Electrical Steels Using Single Diffraction of Neutrons(1963) Eugenio, Manuel; Duffey, Dick; Nuclear Engineering; Digital Repository at the University of Maryland; University of Maryland (College Park, MD)Preferred orientation in rolled electrical steels has been determined using single diffraction of neutrons from the University of Maryland pool-type nuclear reactor (DMR) operating at 10 KW thermal . X-rays are used extensively to determine preferred orientations in metallic wires and rolled sheets, but X-rays suffer the disadvantage of high absorption and cannot be used effectively on thick samples without chemical or mechanical treatment which ultimately results in the destruction of the samples. The use of reactor neutrons for this purpose is believed to offer particular advantages such as the use of thicker samples and wider beams. To this end, neutrons from the UMR were scattered directly from metallic sheet samples to obtain diffraction patterns from which preferred orientations of the crystallographic axes could be deduced. The neutron diffraction data were obtained in the form of : 1) Maxwellian curves; and 2) rocking curves. To obtain the first type of curve, the sample and neutron detector were rotated at a 1-to-2 angular ratio, respectively, and the diffraction pattern was essentially the Maxwellian neutron energy distribution. From the maximum of the Maxwellian curve, the crystallographic plane mainly responsible for the reflection was calculated; from this, the main orientation was deduced. For the second type of curve, the sample was rocked back and forth, with the neutron detector fixed, and the resulting pattern was used to infer the variation of a given crystallographic direction about its main orientation. The results of this study, particularly on grain-oriented and cube-textured silicon-iron (Si-Fe) alloy sheets demonstrate that single diffraction techniques can be used to determine preferred orientation in highly oriented materials. The results on Si-Fe sheets described as non-oriented indicate the possibility that these techniques may be applicable to ordinary rolled metallic sheets, which are not highly oriented.