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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

The Prehistory of an iron age site on Skutwater

Van Ewyk, Johannes Franciscus January 1987 (has links)
After excavations on Mapungubwe by the Department of Archaeology of the University of Pretoria. two definitive research reports emerged in 1979 and 1980. These reports placed the cultural historical framework for Mapungubwe on a firm foundation. superannuating earlier work that had been variously criticised as unsuitable for comparative purposes. The objectives of this research project were to excavate a related site in order to expand the avai I able comparative data and extend the spatial perspective of the Mapungubwe culture. To this end the site of Skutwater was selected. The material recovered from Skutwater was subjected to various analyses for defining the internal structure of Skutwater and generating comparative data. As far as possible quantitative data were used for comparisons. The relationship between Skutwater and Mapungubwe was interpreted within certain social. economic and political models and a definate relationship was found to exist. / Dissertation (MA)--University of Pretoria, 1987. / gm2014 / Anthropology and Archaeology / unrestricted
2

Arctic Offshore Hydrocarbon Resource Development : Past, Present and Vision of the Future

Morgunova, Maria January 2015 (has links)
Energy issues have always been on the global economics and geopolitics agenda, even though energy sources have been changing over time. In recent years, the awareness of Arctic offshore oil and natural gas development has escalated, yielding economic opportunities and incurring risks. The offshore Arctic is one of ‘edges’ of the global petroleum industry. The importance of these oil and natural gas resources extends beyond regional and national boarders and local economies, as these activities have become a key geopolitical, economic, and social concern. In an attempt to shed light on this growing issue, this thesis outlines the Arctic is a link in the global energy system and shows how it plays a special role. The aim of this research is to provide deeper insight into offshore hydrocarbon development activities in the Arctic. Historical approach is applied as a main conceptual framework to provide a critical link of past to the present in order to explore the origin and intensity of these activities in the Arctic. This licentiate thesis presents the results of an ongoing doctoral research project. The study provides several insights into Arctic offshore oil and natural gas resources development in the global context via an analysis of the relevant investments and technology from a country-by-country and historical perspective in the maximum period time frame between 1920 and 2025. The two papers included in this thesis explore the impact of investment and technology. This research project illustrates the importance of several factors influencing the Arctic offshore oil and natural gas production and highlights the most promising areas for cooperation at the industrial and global level. The implications of the study results can be useful for identifying and emphasizing the factors that influence offshore Arctic hydrocarbon resource development and investment trends, as well as making assumptions regarding future development. Topics for further research are discussed and refined relating to the ongoing study and the conceptual framework presented. / <p>QC 20150407</p>
3

Betrachtungen zur Getreideproduktion in Mecklenburg - Vorpommern zwischen 1900 und 2000

Backhaus, Till 11 October 2001 (has links)
Die Arbeit hat das Ziel, auf der Grundlage der natürlichen Standortfaktoren die Entwicklung der Getreideproduktion zwischen den Jahren 1900 und 2000 aufzuzeigen. Dabei sollen die Betrachtungszeiträume historischen Ereignissen, die Rahmenbedingungen für die Produktion bilden, angepasst werden. Für die recht unterschiedlichen Zeiträume werden für die einzelnen Getreidearten die Erträge ermittelt und der jeweils erzielte lineare Ertragsanstieg errechnet. Daran schließt sich dann eine Darstellung des spezifischen Produktionsverfahrens an, um die Ursachen für den erzielten Ertragsanstieg in der jeweiligen Periode aufzuzeigen. Die Verfahrensanalyse erstreckt sich auf die Einordnung in die Fruchtfolge, die Bodenbearbeitung und Bestellung, sowie auf die Düngung, Pflege und Ernte. Die Maßnahmen des Pflanzenschutzes werden nur sehr allgemein im Rahmen der Pflege des Getreides behandelt und die Züchtung begrenzt sich auf erforderliche Hinweise im Rahmen der Ertragsentwicklung. Es werden mehr die Einflüsse der klassischen acker- und pflanzenbaulichen Maßnahmen auf die Getreideproduktion im genannten Zeitraum innerhalb bestimmter Perioden, für die gleichen Rahmenbedingungen gelten, analysiert. Grundlage bilden die langjährigen Angaben über die Erträge der Getreidearten, die im Statistischen Landesamt vorliegen und Veröffentlichungen in Form von Lehrbüchern und Artikeln in Fachzeitschriften des zurückliegenden Jahrhunderts. Gewisse Probleme bereitet die Differenzierung zwischen Erkenntnisfortschritt und tatsächlicher Anwendung in der Praxis. Bestehende Disproportionen werden besonders bei dem Vergleich von Empfehlungen und statistischen Angaben zur Düngung offensichtlich, um ein charakteristisches Beispiel zu nennen. In der Arbeit wird an den betreffenden Stellen darauf hingewiesen. Neben diesen Quellen wurden für Zeiten mit eingeschränkten Publikationsnachweisen noch ältere Landwirte als Zeitzeugen befragt. Dadurch konnten wesentliche Lücken geschlossen werden. Im Ergebnis der analytischen Betrachtung sollen Lösungen für die Getreideproduktion der kommenden Jahre in Mecklenburg-Vorpommern aufgezeigt werden. Dabei wird dem Getreideanbau auf den Grenzstandorten besondere Beachtung zugemessen. / The objective of this work is to demonstrate the development of cereal production between 1900 and 2000 based on natural site-specific factors. In so doing, the periods under consideration are to be studied in correlation with the historical events that formed the framework conditions for production. For each of the various periods, the yields for individual cereal types shall be determined and the respective linear increases in yield shall be calculated. This will be followed by a representation of specific production procedures in order to demonstrate the reasons for the increases in yield for each period. The procedural analysis will cover the categories of crop rotation, soil preparation and treatment, fertilisation, care of crops and harvesting. Crop protection measures will only be touched on generally as is relevant to the care of cereals, and the consideration of cultivation will be limited to necessary indications pertaining to yield development. The work shall, instead, focus on the analysis of the influences of traditional agricultural and horticultural measures on cereal production in the aforementioned period within certain timeframes in which the same framework conditions are present. The basis for this study is formed by several years' worth of data on various cereal yields available from the national statistics office as well as textbook publications and articles in trade publications from the previous century. Certain problems arise when differentiating between the acquisition of knowledge and the actual widespread application thereof. To name a typical example, existing disproportions become particularly obvious when comparing recommendations and statistical details for fertilisation. References shall be made to such discrepancies where appropriate. In addition to theses sources, older generation farmers have been polled as witnesses of time periods for which limited data was available in the form of publications. This approach enabled significant gaps in information to be filled. The objective of these analytical results is to indicate solutions for future cereal production in Mecklenburg-Western Pomerania. Special consideration will be given to the cultivation of cereals in border locations.

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