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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Field and Microstructural Constraints on Deformation Conditions and Shear Zone Kinematics in the Burlington Mylonite Zone, Massachusetts:

Parsons, Martha Mary January 2017 (has links)
Thesis advisor: Seth C. Kruckenberg / The Burlington Mylonite Zone (BMZ) is a northeast-trending, greenschist- to amphibolite-facies shear zone located entirely within the Boston Avalon terrane in Eastern Massachusetts along the tectonic boundary with the Nashoba terrane (the trailing marginal terrane of Ganderia). The juxtaposition of these terranes, and the development of the BMZ, is hypothesized to represent the amalgamation of Avalon and Laurentia during the late Silurian-early Devonian Acadian orogeny, but the timing of its formation and its structural evolution remain largely unconstrained. Field observations and microstructural analysis using electron backscatter diffraction (EBSD) of 24 samples from 16 field sites throughout the BMZ provide new constraints on the kinematics and conditions of deformation that facilitated the development of this large-scale crustal shear zone. The BMZ samples comprise a heterogeneous mix of quartzofeldspathic +/- hornblende-bearing gneisses and quartzites with varying microstructures. Nearly all samples contain abundant mixed, but predominantly sinistral, kinematic indicators (e.g., asymmetric porphyroclasts, tiled feldspars) and a strong crystallographic preferred orientation (CPO). Quartz – the dominant mineral by mode in all of the samples analyzed – is known from experimental deformation studies to develop distinct patterns of CPO which vary as a function of deformation kinematics, temperature, and strain geometry. Patterns of CPO in quartz are used to determine the dominant intracrystalline deformation mechanisms that accommodated the formation of the BMZ. Quartz CPO patterns in the BMZ samples are characterized by variably developed c- and a-axis distributions, broadly consistent with patterns expected for mixed<a> to prism<a> slip at intermediate temperatures of deformation. Corresponding intragranular misorientation axis plots are more diagnostic and indicate dominant prism<a> slip in all of the shear zone samples analyzed, consistent with microstructures observed in thin section (e.g., undulose extinction, subgrain development, grain boundary migration, dynamic recrystallization) and metamorphic conditions inferred from shear zone mineral parageneses. Application of the quartz recrystallized grain size piezometer places additional constraints on deformation conditions, indicating that the BMZ rocks record differential stresses ranging from ~44 to 92 MPa. Field and microstructural observations of shear sense indicators are combined with two analytical methods for determining aspects of kinematic vorticity and deformation geometry in the BMZ. This study applies a new analytical method - crystallographic vorticity axis (CVA) analysis - that leverages rotational statistics on crystallographic orientations within the interiors of grains to constrain the dominant axis of material rotation in deformed samples. This dominant axis provides a uniquely objective proxy for the vorticity normal reference frame required for further quantitative kinematic vorticity analyses. The rotational axis of kinematic vorticity, and its relationship to structural fabrics (i.e. foliation and lineation), provides an important constraint on the geometry of the deforming zone (e.g., monoclinic versus triclinic shear zones). The results of the CVA analysis are invariable across the entire length of the BMZ; the kinematic vorticity axis lies within the plane of mylonitic foliation perpendicular to lineation – the pattern expected for monoclinic deformation geometries. The mean kinematic vorticity number (Wm: a measure of the relative contribution of pure and simple shear) is calculated using Rigid Grain Net (RGN) analysis for the BMZ mylonites and ranges from 0.4-0.5, indicating general shear. Combined field, microstructural, and vorticity analyses are interpreted to suggest that crustal strain localization along the Avalon-Nashoba boundary, as recorded in the BMZ mylonites, involved the combined effects of pure and simple shear in a predominantly sinistral, monoclinic transpressional shear zone. Rock microstructures, patterns of crystallographic preferred orientation, and paleostress estimates suggest that mylonitization occurred at or near the brittle-ductile transition under relatively high stress conditions. This study demonstrates the power of new microstructural methods, such as CVA analysis of electron backscatter diffraction data, to augment traditional field-based methods of kinematics and deformation analysis in enigmatic, large-scale crustal shear zones.
2

Suburban Affiliation to Urban Centres as Measured By Newspaper Circulation and Other Indicators (Case Study: Burlington, Ontario)

Graham, Ian Andrew Randolph 04 1900 (has links)
<p> This research paper addresses the question of the urban affiliation of a suburban population. Social survey data on spatial interaction are used to determine the affiliation of Burlington residents with the Hamilton-Wentworth region and Metropolitan Toronto. A secondary objective is to study the role of urban newspaper circulation in the suburban community in relation to the other variables for measuring urban affiliation. Specific attention is given to spatial variations in urban affiliation for different sub-areas within Burlington.</p> <p> The results show Burlington residents to be more affiliated with Hamilton-Wentworth than Metropolitan Toronto. However, within Burlington, sectoral differences in affiliation emerge. The older areas of Burlington have a strong affiliation to Hamilton-Wentworth; the later developed areas have equal levels of affilation with both urban centres. Newspaper circulation, emerges as a significant indicator of urban affiliation, but is a weaker measure than several other indicators (e.g. number of trips to urban centres and number of telephone calls to urban centres). Reasons for this are postulated in the analysis and in the conclusions.</p> / Thesis / Candidate in Philosophy
3

A cultural change at Burlington High School a search for a new improvement plan /

Miller, Casey Angus. January 2005 (has links) (PDF)
Thesis, PlanB (M.S.)--University of Wisconsin--Stout, 2005. / Includes bibliographical references.
4

Towards a ministry model for promoting a Christian lifestyle at Harvest Hills Church in Burlington, North Carolina, USA

Morris, Russell Alexander. January 2008 (has links)
Thesis (Masters)--South African Theological Seminary, 2008. / Includes bibliographical references.
5

The effects of reading on dropouts in the Burlington High School, Burlington, Massachusetts

McVea, Marie Tyler January 1964 (has links)
Thesis (Ed.M.)--Boston University / PLEASE NOTE: Boston University Libraries did not receive an Authorization To Manage form for this thesis or dissertation. It is therefore not openly accessible, though it may be available by request. If you are the author or principal advisor of this work and would like to request open access for it, please contact us at open-help@bu.edu. Thank you. / 2031-01-01
6

Incident Detection on the Burlington Skyway

Purchase, Emily 04 1900 (has links)
<p> The McMaster Incident Detection Algorithm <MacAlg> automatically detects incidents en the Burlington Skyway for the Burlington Freeway Traffic Managment System <FTXS>. This paper describes the calibration, testing and evaluation of functions of northbound stations 1 through 6. The testing and evaluation of the two weekly data sets is illustrated and discussed. Some of the resulting functions are recommended to the Burlingtion FTNS to evaluate how well the MacAlg detects incidents. This research compliments the work: of Persaud, Hall and Hall (1989), who are developing and testing the logic of the MacAlg. The results of this paper contribute information to the further development and testing of the MacAlg's logic. </p> / Thesis / Bachelor of Arts (BA)
7

Two urban corners : a design exploration for the Holloway block / 2 urban corners : a design exploration for the Holloway block

Cabot, Thomas Dudley January 1982 (has links)
Thesis (M. Arch.)--Massachusetts Institute of Technology, Dept. of Architecture, 1982. / MICROFICHE COPY AVAILABLE IN ARCHIVES AND ROTCH. / Includes bibliographical references. / This thesis explores built possibilities for two public street corners at the Holloway Block in Burlington, Vermont The site is at the historic commercial center of the town, and consisted until recently of abandoned buildings. The author and a partner recently purchased the site and renovated the existing structures for retail and office uses. The two corners, bookends for the block, were vacant at the time of purchase. One is in reality occupied by a building designed by architect Turner Brooks. The other will be built upon in the near future, and the author anticipates the opportunity to make the design. The programs for both buildings are based on amateur analysis of marketing and growth studies made by others. The block is largely within a National Historic District, which imposes design constraints. The designs grow from a brief discussion of the geological, climatic and historical context, and from a brief attitudinal discussion of public urban streets. / by Thomas Dudley Cabot III. / M.Arch.
8

Re-connecting lives to the land : nurturing a deep dialogue in civic agriculture / Reconnecting lives to the land nurturing a deep dialogue in civic agriculture

Hayes-Conroy, Allison, 1981 January 2005 (has links)
Thesis (M.A.)--University of Hawaii at Manoa, 2005. / Includes bibliographical references (leaves 250-257). / vi, 257 leaves, bound 29 cm
9

A Healthy Community in Burlington Neighborhood

Budipradigdo, Maudy Indriani 01 August 2011 (has links)
Studies have shown that the rising rate of adverse physical, social and mental conditions are tightly related to a lack of physical activity, poor eating habits, and the lack of social interaction. Unlike health problems centuries ago which were often caused by lethal diseases, the contemporary health problems in the United States relate to peoples' lifestyles and built environments. Vehicle-oriented community design has caused limited physical activity and unhealthful eating habits that increase obesity and other related health problems. Modern built environments often unintentionally discourage social interactions and present unintended obstacles to physical activities which causes social and mental health problems. This thesis is an attempt to address some of the issues related to improving community design for better community health outcomes via a better design on the built environment. Specifically, this thesis is a case study in the Burlington neighborhood, a low income urban area in Knoxville, Tennessee. I test how design may the issues mentioned above. Following the WHO's definition of health, which is ``a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity.'' This thesis therefore addresses the issue of human health by focusing upon two things. The first thing is to improve the physical health. This includes providing access for pedestrians and bicyclists, access to healthy food and places to exercise. The second focus is to improve social and mental health by providing recreation areas for socialization and refreshing mental health. Unlike the traditional public health approach that relies upon medical interventions, this thesis posits the preventive efforts by utilizing spaces close to people's dwelling places.
10

Developing a community mind on the role and meaning of the Lord's Supper at St. Mark's Church, Burlington, NC

Flint, Stephen R. January 1900 (has links)
Thesis (D.W.S.)--Institute for Worship Studies, 2002. / Abstract. Includes bibliographical references (leaves 185-191).

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