• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 24
  • 1
  • 1
  • Tagged with
  • 33
  • 33
  • 17
  • 15
  • 10
  • 6
  • 6
  • 6
  • 5
  • 5
  • 5
  • 4
  • 4
  • 3
  • 3
  • 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.
31

Analysis of conceptual relations found in corpora and dictionaries for terminological definition writing : an application to the field of sustainable fisheries

Montalvan Ayala, Luz de Maria 07 1900 (has links)
L’objet de notre recherche sont les relations conceptuelles exprimées dans les définitions des dictionnaires et celles exprimées dans un corpus spécialisé. Nous avons pour but d’analyser et comparer ces relations pour identifier les relations les plus communes d’un domaine spécialisé et déterminer où ces relations se trouvent plus fréquemment. Notre approche considère que ces relations se trouvent plus souvent dans les corpus et qu’on pourrait enrichir les définitions terminologiques en incorporant ces relations conceptuelles extraites des textes spécialisés. Le domaine choisi pour cette étude est celui de la pêche durable dont nous analysons la terminologie en anglais. Les termes analysés sont extraits d’un corpus de textes de ce domaine construit pour notre étude et qui comporte des articles scientifiques et des comptes rendus d’organismes spécialisés dans le domaine de la pêche. Pour l’analyse de définitions, trois dictionnaires spécialisés en pêche ont été sélectionnés dans l’étude. L’échantillon final de termes analysés inclut 20 noms (dont 12 termes dénotent des entités et 8 termes dénotent des activités). Ces termes sont les plus spécifiques extraits du corpus avec l’extracteur TermoStat (Drouin, 2003) et définis dans au moins deux des dictionnaires choisis. Les unités lexicales du corpus sont repérées de façon semi-automatique à l’aide de la fonctionnalité word sketch, « an automatic corpus-derived summary of a word’s grammatical and collocational behavior » (Kilgarriff et al., 2010, p. 372) dans la plateforme de gestion de corpus Sketch Engine (Kilgarriff et al., 2014). Nous travaillons avec deux types de word sketches: le word sketch conventionnel fourni par défaut par Sketch Engine et l’EcoLexicon Semantic Sketch Grammar (ESSG; León Araúz & San Martín, 2018). Seules les unités lexicales les plus fréquentes sont sélectionnées de tous les résultats de l’interrogation du corpus. L’analyse des définitions se penche sur toutes les unités lexicales reliées directement au terme analysé. Nous utilisons des paraphrases dans les analyses pour identifier et valider les relations entre le terme analysé et chaque unité reliée. À la suite de l’identification des relations, nous compilons une liste de relations et nous faisons une comparaison entre les résultats du corpus et des définitions. La comparaison des types de relations repérées dans chaque source montre qu’il y a plus de types de relations dans le corpus que dans les définitions pour 70 % de l’échantillon de termes. Lorsque la comparaison examine séparément des termes dénotant des entités et des activités, plus de types de relations se trouvent dans le corpus que dans les définitions pour 83 % des entités et pour 50 % des activités. Les résultats montrent également que 54 % des types de relations repérées sont identifiés pour plus de termes dans le corpus que dans les dictionnaires. Par ailleurs, seulement 16,7 % des relations repérées sont identifiées pour plus de termes dans les dictionnaires que dans le corpus. La recherche a également identifié quels types de relations se trouvent plus souvent dans le corpus, dans le dictionnaire ou dans les deux sources pour le même terme. Ce constat a permis de classifier les types de relations dans trois groupes: les relations qui se trouvent la plupart du temps dans les dictionnaires, celles plus souvent présentes dans le corpus ou celles présentes dans les deux sources. / The object of our study are the conceptual relations expressed in dictionary definitions and those expressed in a specialized corpus. Our goal is to analyze and compare these relations to identify the most common relations of a specialized subject field and determine where these relations are more frequently found. Our approach considers that these relations are more often found in the corpus and that we could enrich terminological definitions if we include the conceptual relations extracted from specialized texts. The subject field chosen for this study is sustainable fisheries from which we analyze the terminology in English. The terms analyzed were extracted from a corpus of texts belonging to this subject field and built for the study. The corpus includes scientific articles and reports issued by specialized organizations in the field of fisheries. For the analysis of definitions, three specialized dictionaries were selected for the study. The final sample of terms analyzed includes 20 nouns (12 terms designating entities and 8 terms designating activities). These terms are the most specific terms extracted from our corpus using the term extractor TermoStat (Drouin, 2003) and defined in at least two of the selected dictionaries. The lexical units from the corpus were extracted semiautomatically using the function word sketch, “an automatic corpus-derived summary of a word’s grammatical and collocational behavior” (Kilgarriff et al., 2010, p. 372) in the corpus management platform Sketch Engine (Kilgarriff et al., 2014). We worked with two types of word sketches: the conventional word sketch provided by default in Sketch Engine and the Ecolexicon Semantic Sketch Grammar (ESSG; León Araúz & San Martín, 2018). Only the most frequent lexical units were selected from all the results of the corpus interrogation. The analysis of definitions included all the related lexical units directly linked to the analyzed term. Paraphrases were used in the analysis to identify and validate the relation between the analyzed terms and the related lexical units. Once all the relations were identified, a list of relation types was compiled, and a comparison was made between results from the corpus and the dictionaries. The comparison of the relation types found in each source shows that there are more relation types in the corpus than in the definitions for 70% of the sample. When the comparison focuses separately on entity and activity terms, more relation types were found in the corpus than in the definitions for 83% of entity terms and 50% of activity terms. Results also show that 54% of the relation types are associated with more terms in the corpus and only 16.7% are associated with more terms in the dictionaries. Additionally, the study identified which relation types are more often found in the corpus, in the dictionaries or in both sources. These findings allowed us to classify the relation types in three scenarios: relation types mostly found in the dictionaries, those more often found in the corpus and the group of relation types which are mostly found in both sources for each term.
32

The sustainability balanced scorecard : its theory and applications to companies operating within the South African fishing industry

Esterhuyse, Willem Petrus 03 1900 (has links)
Thesis (MBA (Business Management))--University of Stellenbosch, 2008. / AFRIKAANSE OPSOMMING: Verskeie korporatiewe fiaskos gedurende die afgelope dekade het wêreldwye opskudding veroorsaak met die gevolg dat daar vanaf ‘n nuwe oogpunt gekyk word na die wyses waarop korporasies bestuur word. Terselfdertyd is daar ‘n wêreldwye belangstelling gekweek in volhoubare ontwikkeling en korporasies se bydrae daartoe. Dit, tesame met korporatiewe bestuur, het tot die gevolg gehad dat die fokus vanaf die tradisionele finansiële verslaggewing geskuif het na rapportering op die sogenaamde “Tripple Bottom Line” en meer en meer maatskappye oor die wêreld genereer en publiseer deesdae op hul ekonomies-, maatskaplike-, omgewingsverantwoordelikhede en prestasies. Gou is daar egter besef dat rapportering en die opstel van beleide self nie genoeg is nie en een van die die grootste uitdagings aan korporatiewe bestuurders tans is om te verseker dat hul korporatiewe bestuurstelsels hul volhoubare strategieë ondersteun om te verseker dat die strategieë in hul maatskappystelsels en prosesse geintegreer is. Kaplan en Norton het in 1992 die Gebalanseerde Telkaart ontwikkel. Die telkaart is as instrument voorgestel om strategieë in aksie oor te skakel. Die telkaart erken dat die tradisionele finansiële maatstawwe nie voldoende is om die volhoudbare sukses van die maatskappy te verseker nie en skep ‘n balans tussen nie-tradisionele maatstawwe oor vier areas: finansieël, kliënte, interne prosesse en leer en groei. Alhoewel daar verskeie gevallestudies in literatuur voorkom waar Gebalanseerde Telkaart implementering gefaal het, het navorsing bewys dat in gevalle waar dit wel suksesvol geimplementeer is, die telkaart ‘n dramatiese verskil aan die maatskapy se prestasie gemaak het. Daar moet dus besef word dat die telkaart wel sy tekortkominge het en dat die implementering daarvan oordeelkundig moet geskied. Gedurende die 21st eeu het outeurs die potensiaal van die Gebalanseerde Telkaart om korporatiewe volhoudbaarheidsstrategië in aksie oor te skakel raakgesien om sodoende die gaping tussen volhoudbare korporatiewe bestuur en die integrasie van beleid en strategieë in die maatskappy prosesse en -stelsels te oorbrug met die integrasie van volhoudbare maatstawwe in die Gebalanseerde Telkaart. Wêreldwyd is die visvangbedryf gedurig onder die kollig vanweë sy impak op die omgewing en die Suid-Afrikaanse visvangbedryf word nie uitgesluit nie. Die visbedryf is ‘n bron afhanklike bedryf en maatskappye moet teen mekaar meeding vir toegang tot die ontgunning van die bron. Vanuit ‘n ekonomiese en ‘n omgewings oogpunt is dit dus van uiters belang dat maatskappye in die bedryf volhoudbare strategieë toepas om die hernubaarheid van die bron te verseker. Suid-Afrikaanse maatskappye bevind hulself egter in ‘n unieke situasie in terme van maatskaplike verantwoordelikheid vanweë die onregmatighede van die apartheidstelsel en maatskaplike verantwoordelikheid moet dus transformasie insluit. Daarvoor het die Departement van Handel en Industrie reeds Die Swart Ekonomiese Bemagtigings Telkaart ingestel om die vordering van maatskappye te meet. Hierdie telkaarte vorm dus ‘n uitstekende basis vir die volhoudbaarheids gebalanseerde integrasie, nie net om te voldoen aan die legislatiewe regulasies nie, maar ook om die geleenhede wat daaruit kan voortspruit ten volle te benut. Hierdie navorsingsverslag ondersoek dus die skakels tussen korporatiewe bestuur en korporatiewe volhoudbaarheid, die teorië rondom die Volhoudbaare Gebalanseerde Telkaart en die moontlike toepassing daarvan op die Suid-Afrikaanse visbedryf. / ENGLISH SUMMARY: Over the past decade outrageous corporate fiascos has resulted in a renewed interest in Corporate Governance and the way Corporates are managed. At the same time sustainable development and the Corporate contribution and Corporate sustainability has gathered worldwide interest in both institutional and corporate spheres. This has triggered new expectations for business transparency and has shifted the focus from traditional financial reporting to reporting on the organization’s impact and performance on the triple bottom line. More companies from across the globe are developing and reporting on their economic, social- and environmental responsibility and performance. It soon became clear that reporting on broad policy is simply not enough and one of the biggest challenges of corporate managers today are to ensure that their sustainable strategies and policies are integrated into their organizational governance structures and processes. Kapland and Norton have developed the Balanced Scorecard in 1992 to provide business managers with a management tool to translate their strategies into action. The scorecard recognizes that traditional financial measurements is not enough to ensure the continued success of organizations and creates a balance between non traditional measurements across four perspectives: financial, customers, internal processes and learning and growth. Although various case studies exist about Balanced Scorecard implementation, empirical research have indicated substantial performance improvement at organizations that have successfully implemented the Balanced Scorecard. Implementation thereof therefore has to be carried out with caution. During the 2000’s authors has recognized the potential of the Balanced Scorecard to translate Corporate sustainability strategies into action and bridge the gap between the way corporates are governed and sustainability by integrating sustainability measures into the Balanced Scorecard for the creation of the sustainability Balanced Scorecard. Fisheries, world wide are continually under the spotlight as a result of their impact on the environment and the South African fishing industry is certainly not excluded. Fisheries are a resource dependent industry and companies have to compete against each other for access to these resources. Apart from its environmental impact it is therefore of outmost importance that managers within the industry considers all the sustainability aspects in their organizational structures. This research report thus explores the link between Corporate Governance and Corporate Sustainability, the theory surrounding the sustainability Balanced Scorecard and the possible application thereof in order to ensure the long term sustainability of the industry.
33

Sustainable alternatives to fish meal and fish oil in fish nutrition : effects on growth, tissue fatty acid composition and lipid metabolism

Karalazos, Vasileios January 2007 (has links)
Traditionally, fish meal (FM) and fish oil (FO) have been used extensively in aquafeeds, mainly due to their excellent nutritional properties. However, various reasons dictate the use of sustainable alternatives and the reduction of the dependence on these commodities in fish feeds. Hence, the aim of the present thesis was to investigate the effects of the replacement of FM and FO with two vegetable oils (VO) and an oilseed meal on the growth performance, feed utilization, nutrient and fatty acids (FA) digestibility and tissue FA composition and metabolism in three commercially important European fish species. Specifically, in Experiment I crude palm oil (PO) was used to replace FO in diets for rainbow trout. In Experiments II and III FO was replaced with rapeseed oil (RO) in diets for Atlantic salmon at various dietary protein/lipid levels aiming also at further reductions of FM by using low protein (high lipid) diet formulations. In Experiments II and III the fish were reared at low and high water temperatures, respectively, in order to elucidate, also, the potential effects of temperature. Lastly, the effects of the replacement of FM with full fat soya meal (FFS) in Atlantic cod were investigated in Experiment IV. The results of the present thesis showed no negative effects on growth performance and feed utilization in rainbow trout when FO was replaced with PO. The dietary inclusion of RO improved the growth of Atlantic salmon, possibly, due to changes in the nutrient and FA digestibilities and FA catabolism while, the growth and feed utilization were unaffected by the dietary protein/lipid level. However, the growth of Atlantic cod was affected negatively by the replacement of FM with FFS. The proximate composition of the fish whole body was in most cases unaffected by dietary treatments. The changes in dietary formulations affected the dietary FA compositions and resulted in significant changes in the fish tissue FA compositions. It was clearly shown that the fish tissue total lipid FA composition reflects the FA composition of the diet, although specific FA were selectively utilized or retained in the tissues by the fish. These may have serious implications not only for fish metabolism and growth but also for the quality of the final product, especially in terms of possible reductions of n-3 HUFA.

Page generated in 0.0947 seconds