Thesis (Ph. D.)--John Hopkins University, 1921. / Vita. Published also as Johns Hopkins University studies in historical and political science, series XLI, no. 4. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references. Bibliography: p. 148.

Thesis (Ph. D.)--John Hopkins University, 1921. / Vita. Published also as Johns Hopkins University studies in historical and political science, series XLI, no. 4. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references. Bibliography: p. 148.

No description available.

The Charleston earthquake of 1886 was one of the largest shocks to occur on the eastern coast of North America. The geological cause has long been a controversial issue and a variety of source models have been proposed. Previous potential field modeling and reinterpretation of seismic reflection and well data collected in the early 1980s indicate that the crust between approximately 1 and 4.5 km depth is comprised primarily of Mesozoic mafic rocks, with extensive faulting that is spatially coincident with modern seismicity in the epicentral area (Chapman and Beale, 2010). This thesis proposes a new and testable hypothesis concerning the fault source of the 1886 shock that is very different from all previous interpretations. It is based on data collected during 2011-2012 from a local seismic network deployment in the immediate epicentral area. The 8-station temporary network was designed to better constrain earthquake hypocenter locations and focal mechanisms. Hypocenter locations of 134 earthquakes indicate a south-striking, west-dipping seismogenic zone in the upper 12 km of the crust. Over 40% of the 66 well-constrained focal mechanisms show reverse faulting on approximately north-south trending nodal planes, consistent with the orientation of the tabular hypocenter distribution. I offer the following hypothesis: The 1886 shock occurred by compressional reactivation of a major, south-striking, west-dipping early Mesozoic extensional fault. The modern seismicity can be regarded as a long-term aftershock sequence that is outlining the 1886 damage zone. Variability of shallow focal mechanisms is due to the complex early Mesozoic fault structure in the upper 4-5 km. / Master of Science

No description available.

Thesis (M.A.)--Clemson University, 2007. / Includes bibliographical references (p. [105-111]).

Thesis (Ph. D.)--Columbia University, 1928. / Published also as Studies in history, economics and public law, edited by the Faculty of political science of Columbia university, no. 305. Bibliography: p. 343-353.

No description available.

Wet site timber harvesting often results in rutted and/or compacted soils. These impacts damage inherent site and soil properties and can reduce subsequent pine seedling survival and growth. Site preparation treatments such as bedding, disking, and fertilization are often employed on harvested sites to mitigate these impacts; however, their effectiveness has not been fully documented. Moreover, a distinction between rutting and compaction has not been made in previous research. This study’s objectives were to quantify the effects of rutting and compaction on site and soil properties and pine seedling growth and survival, and to quantify the effectiveness of bedding, disking, and fertilization in mitigating these impacts. Six wet pine flats were salvage logged following Hurricane Hugo in the fall of 1989. High soil moisture conditions during the salvage operations resulted in compaction and rutting damage. Two studies were established to quantify the effects of trafficking on the functions and productivity of wetland sites. One study addressed soil compaction while the other addressed soil rutting. Each study consisted of three sites, each containing four trafficked and four untrafficked plots. Four site preparation treatments, one on each disturbance plot, were installed in the fall of 1991. The four treatments were 1) no treatment, 2) bedding, 3) disking, .and 4) disking and bedding. The treatment plots were further split with half of each plot receiving 227 kilograms per hectare of 10-10-10 fertilizer. Genetically improved seedlings were hand-planted on the treatment plots in February, 1992. The site preparation treatments did not completely ameliorate compaction or rutting effects on pine seedling growth and survival. Rutting reduced pine seedling second-year height growth, total volume, and survival by 43, 90, and 9 percent, respectively. Compaction reduced second-year height growth by 31 percent and seedling survival by 14.5 percent. Bedding resulted in 35 and 106 percent greater second-year height growths and 117 and 421 percent greater seedling volumes than disking on the rutted and compacted sites, respectively. Phosphorous fertilization had an additive effect to the site preparation treatments and increased pine seedling height growth by 54 and 65 percent and seedling volume by 125 and 155 percent on the rutted and compacted sites, respectively. The factors that affected pine seedling growth and survival were water supply and movement and phosphorous supply. Management implications for wetland sites suggested by this study are as follows: 1) avoid rutting and compaction when possible, 2) schedule wet-site harvesting during the driest periods of the year, 3) use specialized wet-site harvesting equipment when needed, and 4) use bedding and fertilization for site preparation. / Master of Science

This study investigated perceptions held by public school personnel of the South Carolina 4-H program with respect to 4-H curriculum, state 4-H Program objectives, utilization of teachers as volunteers, the Extension Agent's role, school personnel involvement in planning 4-H programs, use of communications media, and certain aspects of utilizing volunteers from outside the school, and whether the perceptions varied in relation to the respondent's school type, school setting, and the person's own prior 4-H experience. The research design was a survey research design with a mail questionnaire. The target populations were superintendents, principals and teachers of the South Carolina public schools. The statistical analysis included the Chi-Square test of independence. The data showed that the elements of the 4-H program are frequently observed by public school personnel. School personnel perceived five of the elements of the 4-H program occurring "sometime" to "most often" (41-100 percent of the time). They observed teachers being only "rarely" utilized as volunteers (0-40 percent of the time). Basically school personnel felt that volunteers from outside the school should be utilized with the in-school program. Some demographic variables were found to be related to the response variable. School type and school setting did not affect the respondent's perception of the 4-H objectives or the Extension Agent's role. School type did not affect the respondents perception of their involvement in planning. Several conclusions were drawn: The 4-H curriculum is suitable for in-school use, relevant for urban and rural audiences, and little attention has been given to extension school liaison committees. Public school teachers are not successfully utilized as volunteers. The Extension Agents assume the majority of the leadership for the in-school 4-H program. School personnel perceptions are influenced by their position and whether or not they have experienced 4-H. The following recommendations were offered: 1) 4-H should continue its relationship with the schools. 2) School personnel should be involved in planning and evaluating the program. 3) Teachers and adults from outside the school be permitted to conduct 4-H clubs in the school. 4) Extension School Liaison Committees should be established. / Ed. D.