• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 606
  • 225
  • 199
  • 100
  • 76
  • 52
  • 51
  • 37
  • 25
  • 20
  • 16
  • 14
  • 13
  • 13
  • 13
  • Tagged with
  • 1945
  • 315
  • 291
  • 230
  • 228
  • 185
  • 180
  • 153
  • 128
  • 124
  • 109
  • 109
  • 103
  • 102
  • 101
  • 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.
201

The Study of Classical Poems of Tu-mu

Huang, Li-min 11 July 2007 (has links)
none
202

Sequence stratigraphic controls of hydrocarbon reservoir architecture - case study of Late Permian (Guadalupian) Queen Formation, Means Field, Andrews County, Texas.

Ryu, Changsu 30 September 2004 (has links)
The late Permian Queen Formation (115 m thick) is a succession of mixed clastics, carbonates and evaporites deposited in the northeastern margin of Central Basin Platform of the Permian Basin, west Texas, USA. Depositional facies, stacking patterns of cyclic facies associations and statistical correlation of rock property variations define geologic controls on reservoir rock properties. Textural, compositional, petrophysical and diagenetic variations within lithofacies exhibit systematic changes with stratigraphic position, which can be related to base level changes that were controlled by high-frequency, low-amplitude, sea level fluctuations during a greenhouse period. Ten lithofacies record variations in clastic input, shallow marine carbonate production, and evaporate precipitation in sabhkas and salinas. Four different types of lithofacies associations define: (1) transgressive deltaic deposits; (2) upward-shallowing evaporite and carbonate tidal-flat deposits; (3) transgressive beach ridge and sand flat deposits; and (4) upward-shallowing evaporite salina-sabhka deposits. Stacking patterns of lithofacies associations define sixteen depositional cycles that can be grouped into eight cycle sets. Cycle sets in turn are grouped to define two high-frequency sequences. Sequence 1 progresses from fluvial to carbonate tidal flat cycles. Sequence 2 consists of salina-dominated upward-shoaling cycles. Lateral continuity of cycles indicates restricted sedimentation on low-accommodation inner platform areas updip of prograding highstand platform-margin carbonate buildups, and a long-term trend of accommodation decrease. The Queen Formation contains two reservoir types; (1) siliciclastic reservoirs capped by evaporites and (2) layer-cake carbonate reservoirs. Of the four reservoir zones identified, R11 in lowstand fluvial-deltaic deposits has relatively little cement and the best reservoir characters.
203

Beiträge zur Geschichte der byzantinischen Finanzverwaltung besonders des 10. und 11. Jahrhunderts

Dölger, Franz, January 1960 (has links)
Habilitationsschrift--Munich. / Interpretation of a Byzantine treatise (Cod, marc. gr. 173, f.276vo-281ro) published for the first time by W. Ashburner, in the Journal of Hellenic studies v. 35, 1915, p. 76-84, with title A Byzantine treatise on taxation. The present treatise is mainly devoted to the explanation of the numerous technical terms--Cf. Vorwort. "Die 2. auflage ist ein unveränderter abdruck der 1. auflage, die als heft 9 des Byzantinischen archivs 1927 erschienen war. Die vom verfasser vorgenommenen berichtigungen und ergänzungen finden sich auf den seiten 161 ff." Includes bibliographical references (p. [1]-2).
204

Gender fluidity : an alternative image of women (and men), and a critique of the colonialist legacy / Alternative image of women (and men), and a critique of the colonialist legacy

Tang, Jin, master of music 27 February 2012 (has links)
Chinese feudal women have long been identified as victims of the Chinese Confucian patriarchy and discussed in terms of notions of backwardness, dependency, female passivity, biological inferiority, intellectual inability, and social absence. This image of the victimized women, however, is a product of China’s modernization and Westernization processes since late-nineteenth and early-twentieth century. Its formation is inseparable from the appropriation of the colonialist categories of sex binarism by the May Fourth male “new intellectuals.” This binary, linear gender ideology, together with the social context of Confucianism’s long-term status as the official, orthodox ideology in premodern China, easily led to the conceptualization of women in terms of absence, marginalization, and ultimately victimization. In this process, Chinese women became Woman, the other of Man, which constitutes a monolithic, ahistorical entity that masks specificities and variations in different historical periods and concrete cultural contexts, and obscures the dynamics of gender relationships. Kunqu (Kun opera) and the literati culture of late Ming (1573-1644) and early Qing Dynasty (1644~1722) surrounding it could be of particular use to demonstrate the problem of this binary and static conceptualization of gender in premodern China. In this study, I will be examining the case of two distinguished kunqu, Mudan ting (The Peony Pavilion) and Taohua shan (The Peach Blossom Fan), whose text, music, and performance raise interesting questions about femininity and masculinity in the specific social and cultural context of the time. Through this study, I want to help illuminate the inadequacy of the modernist, rigid sex binarism in understanding traditional Chinese gender ideology which cannot be reduced to the Western sexual physiology and biology, and to refute the ahistorical construction of the victimized Chinese Woman. / text
205

Marriage, gender, and the politics of "unity" in Visigothic Spain

Dickenson, Elizabeth Gayle 23 April 2013 (has links)
This dissertation’s thesis is that the marital rhetoric and gendered imagery of late classical, Christian political discourse appear in narrative, conciliar, and legal texts produced in Visigothic Spain between 579 and 654 A.D. for the purpose of expressing conflict, rather than “unity.” This thesis opposes views of the Visigothic kingdom as a model of successful Christian unification by showing how the male-authored, Spanish sources - far from being silent on religio-political conflicts - use marriage, women, and wealth as metaphors in disputes over orthodoxy and status. These early medieval texts suggest a new paradigm of Christian “unity” in which Jews function as the “enemy,” and in so doing, establish a political model decidedly different from that of late antiquity. Examples of this political model appear in the Third and Fourth Councils of Toledo (589 and 633 A.D.), which are published here for the first time in Latin-English translation. Despite the historical significance of the Visigothic sources in the Spanish and broader contexts, little attention has been paid to late classical marital rhetoric and gendered imagery in them as evidence of conflicts. Understanding the purpose of these rhetorical strategies helps us to perceive how the paradigm of Christian “unity” masked deep conflicts over status, orthodoxy, and wealth - conflicts that persisted until a new invading force appeared to challenge Visigothic power in 711 A.D. / text
206

Late Quaternary seismic stratigraphy and structure of the western insular shelf margin of Puerto Rico

Hanzlík-Valentín, Martín 15 May 2015 (has links)
The modern insular shelf and slope of western Puerto Rico is characterized by reef carbonate and siliciclastic sedimentary environments controlled by the complex interplay of tectonic arching and faulting, vigorous erosion of the elevated island of Puerto Rico, fluvial incision and sedimentation pulses, reef growth, and rapid late Quaternary eustatic sea-level changes. For this study, I interpret 725 km of high-resolution, single-channel seismic lines that were collected over the western insular shelf and slope by the RV Isla Magueyes in 2000 to better understand tectonic, erosional, and eustatic controls on late Quaternary history. The seafloor geology of the western shelf and slope area of Puerto Rico has been well studied and mapped mainly from grab and short cores collected by geoscientists at the U.S. Geological Survey and at the University of Puerto Rico at Mayagü̈ez. Because of low tectonic uplift rates from the western coast of Puerto Rico, the onland late Quaternary sedimentary history is not recorded in Quaternary coastal outcrops. The results of my seismic interpretation and correlation with multi-channel seismic data collected in 1972, reveal four main units defined by characteristic stratal reflection terminations and seismic facies. These units include: Unit 1 (basement) - a gently folded and faulted basal section correlated to the Oligocene-early Pleistocene carbonate shelf of Puerto Rico; deeper penetration, industry multi-channel seismic lines show that these rocks are deformed in a broad east-west-trending arch; Unit 2 (lowstand systems tract, LST) - chaotic channel fill deposits filling deep (~ 30 meter) incisions formed during the Last Glacial Maximum about 20 ka; Unit 3 (transgressive system tract, TST) - poorly stratified deposits truncating the top of Unit 2 and deposited during early Holocene transgression of the shelf margin; Unit 4 (highstand system tract, HST) - late Holocene, highly stratified deposits related to aggradation as the Holocene transgression began to slow. The base of unit 4 is a downlap surface interpreted as a maximum flooding surface likely formed about 8 ka. East-northeast-striking faults are observed that offset the late Quaternary units in three separate zones off the west coast of Puerto Rico. Because of a lack of wells and long cores from the shelf and slope area, age estimates for the four units are based on correlations with sea-level curves derived from dated coral samples in the Caribbean and western Atlantic region. All four units are deformed by faulting that should be considered active and possibly hazardous for the rapidly developing west coast of Puerto Rico. In one area, a large, late Holocene-slump (~ 0.016 km³) is mapped using seismic, sidescan sonar and bathymetric data. Onland continuations of these faults are likely, but have not been identified due to cultural overprint of natural scarps on late Quaternary floodplains. / text
207

Beurteilung der Lungenfunktion später Frühgeborener im Vergleich zu reifen Neugeborenen im Alter von 6 Jahren

Schneider, Christin 19 November 2015 (has links) (PDF)
Kinder, welche nach 34 (+0) bis 36 (+6) Gestationswochen geboren werden, bezeichnet man als späte Frühgeborene. Genau wie Kinder eines jüngeren Gestationsalters sind diese von einer höheren postnatalen Morbidität und Mortalität betroffen als reif geborene Kinder. Diese Studie betrachtet die pulmonale Funktionsleistung dieser Kinder weit über die Neonatalperiode hinaus. Ehemals späte Frühgeborene wurden im Alter von 6 Jahren untersucht. Eine gleichaltrige Kontrollgruppe, bestehend aus ehemals reifen Neugeborenen, diente dem Vergleich. Vor allem Parameter der Spirometrie sowie Peak-Flow- und Atemwegswiderstandsmessungen ermöglichten dabei die Objektivierung der pulmonalen Funktion. Statistisch signifikante Unterschiede ließen sich in der mittleren FVC (forcierte Vitalkapazität) sowie dem FEV1 (forciertes exspiratorisches Volumen in einer Sekunde) feststellen, wobei Kinder der Indexgruppe jeweils im Mittel nur geringere Werte erreichten als Kinder der Kontrollgruppe. Der mittlere Atemwegswiderstand unterschied sich in Index-und Kontrollgruppe ebenso signifikant, wobei bei ehemals späten Frühgeborenen der Atemwegswiderstand im Mittel höher war als bei ehemals reifen Neugeborenen.
208

Transnational Immigration Politics in Mexico, 1850-1920

Herrera, Ricardo January 2013 (has links)
The current historiography on Mexican immigration from 1850 through 1920, has neglected to seriously study the forgotten migration of American citizens, not big capitalists as those have been well documented, seeking their American Dream in Mexico. Thus, my work seeks to understand how a very unstable international border dominated by constant Indian raids and filibuster attempts, led to transnational migration. A direct consequence of transnationalism is that it created a xenophobia mentality among the masses, and in some instances, a fetishism for anything foreign, especially among elites and the new breed of young politicians under President Diaz. I focus my analysis on the wave of American citizens, mostly former Civil War veterans, who in the 1860s decided to go to Mexico because President Benito Juarez offered them generous incentives such as tax exemptions and large land grants for colonization purposes, if they decided to join his military efforts to rid his country of the French invaders. Beyond just those white American immigrants, the dissertation also looks at the experience that black colonists encountered in a country that proudly boasted that it welcomed anyone, regardless of their skin color, so long as they adhered to the law. So I argue, that after analyzing the experience of several ethnic groups, such as the Italian immigrants in Cordoba, Veracruz, or the colonies of those immigrants seeking religious freedom such as the Mormons and Mennonites in northern Mexico, that indeed, Mexico was the Land of God and Liberty. This was the popular term used by runaway slaves from Texas in the 1850s and by many African Americans from Alabama who sold everything they had in 1895 to pay for their transportation cost to Mexico in search of a better life not found in the United States.
209

Late Quaternary Landscape Evolution, Environmental Change, and Paleoindian Geoarchaeology in Middle Park, Colorado

Mayer, James H. January 2009 (has links)
Stratigraphic records in Middle Park in north-central Colorado provide evidence for the late Quaternary geomorphic and environmental history of a non-glaciated Southern Rocky Mountain basin. Episodes of geomorphic instability apparent in the stratigraphic record coincide with changes in paleoenvironmental records from above 2750 m in north-central Colorado, suggesting that the western Middle Park landscape was sensitive to environmental changes affecting the region over the last ~14,000 years. Tributaries were incised prior to 14.0 ka, but deposits older than 12.0 ka are rare. Upland erosion and incision followed by rapid aggradation in alluvial settings between 12.0 and 11.0 ka coincide with evidence for regional temperatures at or above present, and is interpreted to signal the onset of Holocene summer-wet precipitation. A widespread soil-stratigraphic marker represents a long period of landscape stability between <11.0 and 6.0 ka in upland and alluvial settings. Pedologic evidence from upland settings indicates the expansion of grass and forest cover to lower elevations that today are characterized by sagebrush steppe, probably during a period of increased summer precipitation relative to present. During the late Holocene, episodes of aggradation in alluvial valleys at 6.0-1.0 ka and 0.6-0.2 ka and soil formation in uplands at 5.0-3.5 ka and 2.5-1.0 ka overlap with evidence for cooling at higher elevations. Incision of valley floors documented at 1.0-0.6 ka and during the last few centuries and episodes of erosion in uplands at 3.5-2.5 ka, after 1.0 ka, and within the last few centuries, are roughly synchronous with evidence for warming. Upland and alluvial stratigraphic records are interpreted to indicate that during cool intervals summer precipitation was diminished, resulting in relative hillslope stability and gradual valley bottom aggradation, while pulses in summer precipitation accompanying warmer episodes caused basin-wide geomorphic instability. The recent increasing frequency of geomorphic instability appears to correspond with an increase in sagebrush steppe at the expense of forest and grass cover, interpreted to represent progressive drying during the late Holocene. It stands to reason that future warming, if accompanied by similar patterns in precipitation, will result in continued erosion on a landscape already at a threshold of geomorphic instability.
210

LATE QUATERNARY GLACIATION AND PALEOCLIMATE OF TURKEY INFERRED FROM COSMOGENIC 36Cl DATING OF MORAINES AND GLACIER MODELING

Sarikaya, Mehmet Akif January 2009 (has links)
The main objective of this dissertation is to improve the knowledge of glacial chronology and paleoclimate of Turkey during the Late Quaternary. The 36Cl cosmogenic exposure ages of moraines show that Last Glacial Maximum (LGM) glaciers were the most extensive ones in Turkey in the last 22 ka (ka=thousands years), and they were closely correlated with the global LGM chron (between 19&plusmn;23 ka). LGM glaciers started retreating 21.3&plusmn;0.9 ka (1&sigma;) ago on Mount Erciyes, central Turkey, and 20.4&plusmn;1.3 ka ago on Mount Sandiras, southwest Turkey. Glaciers readvanced and retreated by 14.6&plusmn;1.2 ka ago (Late Glacial) on Mount Erciyes and 16.2&plusmn;0.5 ka ago on Mount Sandiras. Large Early Holocene glaciers were active in Aladaglar, south-central Turkey, where they culminated at 10.2&plusmn;0.2 ka and retreated by 8.6&plusmn;0.3 ka, and on Mount Erciyes, where they retreated by 9.3&plusmn;0.5 ka. The latest glacial advance took place 3.8&plusmn;0.4 ka ago on Mount Erciyes. Using glacier modeling together with paleoclimate proxy data from the region, I reconstructed the paleoclimate at these four discrete times. The results show that LGM climate was 8-11oC colder than today (obtained from paleotemperature proxies) and wetter (up to 2 times) on the southwestern mountains, drier (by ~60%) on the northeastern ones and approximately the same as today in the interior regions. The intense LGM precipitation over the mountains along the northern Mediterranean coast was produced by unstable atmospheric conditions due to the anomalously steep vertical temperature gradients on the Eastern Mediterranean Sea. In contrast, drier conditions along the southern Black Sea coast were produced by the partially ceased moisture take-up from the cold or frozen Black Sea and prevailing periglacial conditions due to the cold air carried from northern hemisphere's ice sheets. Relatively warmer and moister air from the south and overlying cold and dry air pooled over the northern and interior uplands created a boundary between the wet and dry LGM climates somewhere on the Anatolian Plateau. The analysis of Late Glacial advances suggests that the climate was colder by 4.5-6.4oC based on up to 1.5 times wetter conditions. The Early Holocene was 2.1oC to 4.9oC colder on Mount Erciyes and up to 9oC colder on Aladaglar, based on twice as wet as today's conditions. The Late Holocene was 2.4-3oC colder than today and the precipitation amounts approached the modern levels. Glaciers present on Turkish mountains today are retreating at accelerating rates and historical observations of the retreat are consistent with the behavior of other glaciers around the world.

Page generated in 0.0385 seconds