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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.

Biotic interactions in salt marsh zonation with particular reference to abuscular mycorrhizas

Yallop, Adrian Roy January 1998 (has links)
Salt marshes occupy a narrow intertidal zone where conditions change from marine to terrestrial. As a consequence they exhibit severe clines in salinity and soil saturation. The characteristic zonation of the vascular plant communities occupying these habitats is believed to develop as a result of differential tolerance and competitive abilities of the plants that comprise them. There are however few data on the structure of salt marsh communities relative to either elevation or tidal inundation. The consequences of soil saturation and salinity may also affect the distributions of soil microflora, including the occurrence and development of arbuscular mycorrhizal fungi. As AM development can result in enhanced plant performance, and may alter competitive interactions, any edaphic limitation in their development could influence plant community development. Detailed surveying, and the use of two objective methods of defining zonation, has allowed a full description of the plant community structure, relative to elevation, to be made. This identifies three distinct species groupings within the zonation, and has enabled the identification of competitive dominants within the zonational sequence. The occurrence of AM development within the salt marsh community has also been accurately determined for the first time. This represents the first survey of AM fungi in UK salt marshes since 1928, and identifies a distinct cline in the occurrence of these fungi relative to inundation. The effects of mycorrhizal development by AMF isolated from salt marsh sediments on the growth of 5 halophytes is ascertained. The results suggest salt marshes are environments where the usual benefits of AM development do not apply. This may explain the low levels of mycotrophy observed amongst halophytes.

Vers une notion internationale de la concurrence déloyale?

Geille, Patrice January 1995 (has links)
This comparative law thesis defines a concept of unfair competition susceptible of universal recognition in the field of civil responsibility, with a view to contributing to the harmonization of unfair competition laws throughout the world. It is argued here that morality provides the theoretical basis for the law of unfair competition while fostering aims of economic efficiency. The relationship of unfair competition law to antitrust law or intellectual property law is given full attention. The author gives an overview of the development of unfair competition law and proposes ways to reassess and clarify its scope.

Essays on merger policy

Avalos Bracho, Marcos Santiago January 2002 (has links)
No description available.

The international telecommunications sector : a financial investigation of post privatisation performance

Al-Shafi, Nasser Mubarak Shafi January 2003 (has links)
The focus of this thesis is an investigation of the post-privatisation performance of the international telecoms sector. Firstly, the general hypothesis (1) of this thesis has been pursued, which states that the privatised telecoms companies perform differently from their non-privatised (private) counterparts. Several tests were applied; namely, ANOVA, and multiple regression analysis. The principal finding was that there was no significant difference in performance. Secondly, the next hypothesis (2) states that the financial performance of each company is positively related to that of the other two selected companies. For this purpose, multiple regression tests were performed to investigate any inter-relationships between BT, AT&T and NTT. It was found that the performance of each was affected by the other companies. Thirdly, the next hypothesis (3) states that, in a global market, company performance is related more closely to the sector than to each respective stock market. It was found that performance was affected more significantly by their respective stock markets than by competitor global players. Fourthly, the next hypothesis (4) states that, in terms of competitive advantage, NTT exhibits through time a superior position compared with BT and AT&T on account of its monopoly position. It was found that monopoly was not an issue. Fifthly, the next hypothesis (5) states that, of the three global players, AT&T is more adversely affected in its competitive advantage on account of its having a weaker monopoly position. It was found that AT&T had a competitive advantage from 1990 to 1993. BT took the lead until 2000, then NTT forged ahead after the Japanese market started to become more liberalised in terms of competition. Original tests were performed regarding the changing degree of competitive advantage of these three companies. This required an evaluation of the relationship between competitive advantage and priceearnings inverses, capital asset pricing model derived rates of return and dividend-based rates of return. A random walk with drift model was also applied, in order to evaluate forecasted trends. Finally, BT's short-term debt-financing problems were examined. To overcome these difficulties, BT raised funds via a rights issue, selling off Yell and other profitable assets and de-merged their mobile company. It was found that the strategic risk probability of a failed rights issue was quite small.

The response of established firms to disruptive strategic innovation : empirical evidence from Europe and North America

Charitou, Constantinos D. January 2001 (has links)
No description available.

Assessing Thailand's international competitiveness a generalised double-diamond approach : a dissertation [thesis] submitted to Auckland University of Technology in partial fulfilment of the degree of Master of Business, 2005.

Wongsawat, Natjarate. January 2005 (has links) (PDF)
Thesis (MBus) -- Auckland University of Technology, 2005. / Also held in print (117 leaves, 30 cm.) in Wellesley Theses Collection. (T 338.60480953 WON)

Redescribing competition in education /

Meuter, Linda Cathleen. January 1997 (has links)
Thesis (Ph.D.)--University of Washington, 1997. / Vita. Includes bibliographical references (leaves 287-295).

Die Konkurrenzklausel /

Carstens, Wilhelm. January 1911 (has links)
Thesis (doctoral)--Friedrich-Alexander-Universität zu Erlangen.

Gesetzesverletzung als unlauterer Wettbewerb /

Almenräder, Werner. January 1958 (has links)
Thesis (doctoral)--Universität Köln.

Die allgemeine Bedeutung des neuen Wettbewerbsgesetzes als Beitrag zur Auslegungslehre /

Creutzberger, Justus. January 1916 (has links)
Thesis (doctoral)--Universität Jena.

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