• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 136
  • 43
  • 40
  • 11
  • 9
  • 6
  • 4
  • 3
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 1
  • Tagged with
  • 280
  • 40
  • 34
  • 31
  • 29
  • 23
  • 22
  • 21
  • 20
  • 19
  • 19
  • 17
  • 17
  • 17
  • 16
  • 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.
101

Julmust, Must or Christmas Cola? : Translation Strategies for Words for Culture Specific Items in Two Translations of Liza Marklund’s 'Sprängaren

Mole, Richard January 2019 (has links)
Research within translation characterises cultural references as being problematic for translators, meaning they must choose between different translation strategies as to how to transfer these references into the translated text. These strategies are often described in general terms according to how closely oriented they are to the target-culture or source-culture, known as domestication or foreignisation. Translation of literature into English is minimal in world terms and there is seemingly a lack of statistically comparable data concerning the translation of cultural references. This study investigates and compares translation strategies of words denoting cultural references in two translations of the 1998 Swedish Nordic Noir novel Sprängaren by Liza Marklund. The methodology in the study is based on descriptive translation studies, and a categorisation model for types of cultural references is used, as well as an adapted taxonomy model for evaluating translation strategies. Issues addressed are: what types of strategies are used; whether strategies change between translations; how the second translation stands in relation to the retranslation hypothesis and whether any general translation norms are apparent. Results show that a wide variety of translation strategies are used for different types of cultural references, with subtle differences in strategies used in each translation. However, both translations appear to be more domestication-oriented with little overall movement towards to the source culture, as the retranslation hypothesis suggests.
102

The Evolution and Domestication Genetics of the Mango Genus, Mangifera (Anacardiaceae)

Warschefsky, Emily 27 April 2018 (has links)
Domesticated species are vital to global food security and have also been foundational to the formulation and advancement of evolutionary theory. My dissertation employs emerging molecular genomic tools to provide an evolutionary context for crop improvement. I begin by providing a contemporary perspective on two components of domestication biology that have long been used to improve crop production: wild relatives of crop species and grafted rootstocks. First, I propose a method to systematically introgress crop wild relative diversity into crop breeding programs. Then, I explore rootstocks, the lesser-known half of the perennial crop equation, documenting prevalence and diversity, cataloging rootstock traits under selection, and discussing recent advances in rootstock biology. Both crop wild relatives and rootstocks remain largely underutilized resources and hold great promise for agricultural innovation. While humans have domesticated thousands of plant species, research has largely focused on annual crops, to the exclusion of perennials. To improve our understanding of how tree species respond to domestication, I examine the evolution and domestication of one of the world’s most important perennial tropical fruit crops, the mango, Mangifera indica, and its wild and semi-domesticated relatives. I generated a dataset suitable for studying Mangifera across evolutionary time using double digest restriction site associated DNA sequencing (ddRADseq). I present a multilocus phylogeny that informs the classification of Mangifera and reveals, for the first time, the evolutionary relationships of wild, semi-domesticated, and domesticated species in the genus. Narrowing my focus to the intraspecific level, I examine how the introduction of M. indica into regions of the world impacted its genetic diversity. My results show M. indica maintained high levels of genetic diversity during its introduction into the Americas. However, the novel diversity I detect in Southeast Asian mango cultivars suggests that M. indica has a more complex domestication history than previously assumed. I also find evidence that M. indica hybridized with multiple congeners following its introduction into Southeast Asia, forming two hybrid lineages that may be maintained by clonal polyembryonic reproduction. Collectively, my research provides a comprehensive framework for understanding the evolution and domestication of a tropical tree crop of global economic importance.
103

Domestication Norms in French and Swedish : A Comparative Study of Subtitles

Ericson, Nanna January 2010 (has links)
<p>France has long had its foreign audiovisual material dubbed. If this is due to an attempt to conserve the French language, there should also be similar concern with foreign cultural references. This essay uses qualitative analyses of extralinguistic references to discover if a so-called domesticating practice is notable also in French subtitling. Sweden, however, is a smaller country, and may be considered more Americanized culturally. Swedish subtitling is used as the more globalized counterpart.</p><p>This research cites instances in which extralinguistic references are made and how they are subsequently dealt with in the translated subtitles. The instances are singled out and then individually analyzed. Using four categories of translation methods for Extralinguistic Cultural References (ECRs), this study investigates whether translation norms differ between Swedish and French subtitles.</p><p>This study‘s most important finding is that there do seem to be different norms for Swedish and French subtitles and that the francophone target audience is not required to move so far from its domestic reference frame as is the Swedish target audience.</p><p>Another important finding is that while there are both quantitative and qualitative differences, there are also striking similarities on the statistical level, indicating that there are global norms that govern translation in general, and specifically subtitling.</p><p>The results are interesting for the discussion around which ECRs are domesticated, but also for further sociolinguistic analyses of French domestication.</p>
104

Foraging and exploratory behaviour in Red Junglefowl (<em>Gallus gallus</em>) selected for fear of humans

Walett, Emma January 2010 (has links)
<p>Domestication is a process in which animals become adapted to a life among humans by means of selection. A reduced fear of humans is probably one of the first aims of selection, intentionally or unintentionally. Animals that have undergone the process of domestication have a different appearance than animals in the wild (domestic phenotype) and behave in a different way towards humans. In this study I have looked at foraging and explorative behaviours in an unselected parental generation of red junglefowl and their offspring. The parental generation were bred in three lines, a high line, with birds displaying a strong fear of humans, an intermediate line, birds showing a modest fear, and one low line, with birds performing a more tame behaviour towards humans. I presented the birds with three different feeding alternatives, familiar chicken food, meal worms camouflaged with wood shavings and just wood shavings. I counted number of pecks in the different food options, number of changes between sites and how many sites a bird visited. The results show that females of both generations were more explorative than males, by pecking more in cups of meal worms hidden in wood shavings whereas the males pecked more in cups containing chicken food. Females also moved around more in the arena. Results from the first selected generation show significant differences between the selection lines among the females, with females from the high and low groups being the most explorative.</p>
105

Social behaviour responses in red junglefowl (<em>Gallus gallus</em>) selected for tameness

Ericsson, Maria January 2010 (has links)
<p>Historically during domestication of animals, tameness towards humans was likely the most desired trait and therefore bred on. The red junglefowl (Gallus gallus) is the wild progenitor of all domestic chicken breeds and earlier studies present clear morphological, physiological and behavioural differences between domesticated breeds and the non-domesticated red junglefowl. These changes may be the result of altered gene expression - pleiotropy or linked genes. The aim of this thesis was to evaluate (1) effects of tameness selection on social behaviour towards conspecifics and (2) social behaviour differences between the sexes. Two generations of red junglefowl, P0 and its offspring F1, were studied. Both generations were divided into three selection lines (tame, intermediate or fearful), depending on their results in a fear of humans test.  A novel type of social reinstatement test was set up, containing a non-social area without stimulus, and a social area containing a mirror serving as stimulus animals. The social and aggressive behaviours performed towards the mirror were recorded, so was the time spent in the social versus non-social part. An undisturbed behaviour test was performed, as well as a standardized social reinstatement test. The P0-females performed significantly more social behaviour (p=0.008) at 26 weeks than males in the mirror test, and females also displayed significantly more social (p=0.04) and agonistic behaviour (p<0.001) than males in the undisturbed behaviour test. The social reinstatement test displayed a significant effect between the selection lines with regards to sociality. This suggests that there are immediate selection responses in early domestication.</p>
106

Conservation Genetics of Wolves and their Relationship with Dogs

Sundqvist, Anna-Karin January 2008 (has links)
<p>Management of wolves is a complex issue, and molecular genetics is an important tool in this work. Molecular genetics can provide important information at the species, population and individual level, which can be essential for the development of management programs aiming at the long term survival of wolf populations.</p><p>In this thesis I developed new genetic markers on the canine Y chromosome to estimate the number of founders of the Scandinavian wolf population. This knowledge is important to reconstruct the history of the population and to design the most appropriate conservation strategies. Next, genetic markers with different pattern of inheritance have been used to identify hybrids between wolves and dogs. This allowed us to determine the direction of hybridization and to evaluate its possible impact on the gene pool of a wolf population. Furthermore, I also developed a method for a more reliable identification of the predator responsible of an attack by using saliva remains left on the prey. Since predation on livestock is perhaps the main reason for the negative opinions about the predator, the correct identification of the responsible for an attack (wolf, dog or hybrid) is essential. </p><p>Finally, this thesis has also been focusing on the domestication of dogs. By using Y chromosome markers (paternally inherited), it has been possible to complement previous studies based on mtDNA sequences (maternally inherited) and autosomal markers (inherited from both parents). In this way I have obtained a more complete picture of the domestication process and of the origin of breeds. This has shown that there has been a bias in the contribution of the two sexes in the origin of dog breeds (fewer males then females contributing to each breed) and that the origin of dogs was not marked by extensive backcrosses with male wolves over the entire species range.</p>
107

Drought response of <i>Populus</i> transformed with stress response transcription factors

Campbell, Alina S 01 August 2010 (has links)
The economic feasibility of producing biomass-based fuels requires high-yielding feedstocks to supply biomass to biorefineries. Populus trees are a potential biomass feedstock due to their high yield, but their high water requirement limits productivity under drought conditions. The number of genes controlling drought tolerance, and the long generation time for perennial species, slows cultivar development. Accelerated domestication proposes using the sequenced Populus genome to quickly incorporate target traits into productive clones by transgenesis. Six putative drought tolerance transcription factors: DREB2A, DREB2B, AtMYB, AREB1/ABF2, MYB, and NAC, had been previously identified and manipulated in eastern cottonwood (Populus deltoides). Three constructs of each gene were transformed into a P. deltoides background clone, including constitutive overexpression (OE), drought inducible OE, and knockdown. This greenhouse study examines the effect of these previously transformed constructs on drought tolerance by characterizing leaf abscission, leaf water potential, and growth under drought and well-watered conditions. AREB1/ABF2 constitutive OE lost significantly fewer leaves under drought than the Vector control, and had one of the lowest rates of leaf loss overall. Both DREB2A inducible OE and AREB1/ABF2 constitutive OE plants were more productive than the Vector control under drought conditions. MYB inducible OE was a productive construct and initially appeared to be drought tolerant. It is possible that this construct experienced xylem cavitation early on due to the severity of drought experienced by the large trees containing this construct. DREB2A inducible OE, AREB1/ABF2 constitutive OE, and MYB inducible OE were the most productive constructs as well as being likely to confer drought tolerance. Field trials would be the next step, providing a clearer picture of how these constructs would perform under natural conditions.
108

Conservation Genetics of Wolves and their Relationship with Dogs

Sundqvist, Anna-Karin January 2008 (has links)
Management of wolves is a complex issue, and molecular genetics is an important tool in this work. Molecular genetics can provide important information at the species, population and individual level, which can be essential for the development of management programs aiming at the long term survival of wolf populations. In this thesis I developed new genetic markers on the canine Y chromosome to estimate the number of founders of the Scandinavian wolf population. This knowledge is important to reconstruct the history of the population and to design the most appropriate conservation strategies. Next, genetic markers with different pattern of inheritance have been used to identify hybrids between wolves and dogs. This allowed us to determine the direction of hybridization and to evaluate its possible impact on the gene pool of a wolf population. Furthermore, I also developed a method for a more reliable identification of the predator responsible of an attack by using saliva remains left on the prey. Since predation on livestock is perhaps the main reason for the negative opinions about the predator, the correct identification of the responsible for an attack (wolf, dog or hybrid) is essential. Finally, this thesis has also been focusing on the domestication of dogs. By using Y chromosome markers (paternally inherited), it has been possible to complement previous studies based on mtDNA sequences (maternally inherited) and autosomal markers (inherited from both parents). In this way I have obtained a more complete picture of the domestication process and of the origin of breeds. This has shown that there has been a bias in the contribution of the two sexes in the origin of dog breeds (fewer males then females contributing to each breed) and that the origin of dogs was not marked by extensive backcrosses with male wolves over the entire species range.
109

Domestication effects on foraging behaviour : consequences for adaptability in chickens

Lindqvist, Christina January 2008 (has links)
The main aim of this thesis was to study domestication effects on foraging behaviour in chickens and to investigate whether and how domestication and selection for high production have influenced adaptability in chickens. Two domestic strains of chickens (egg layers and meat type chickens) and their wild ancestor, the red jungle fowl (RJF) were compared in different test situations with respect to foraging behaviour and adaptability. The domestic strains showed a modified foraging strategy, where they were less inclined to explore and feed from a hidden food source, i.e. they showed less contrafreeloading (CFL, the behaviour of working for food even though identical food can be easily obtained) than RJF. The difference in CFL between RJF and the layers were not altered by food deprivation, which suggests that the lower CFL in the layers represents a genetically based difference in feeding strategy. In addition, CFL decreased with age in RJF and layers and social isolation decreased CFL in RJF. Furthermore, when foraging, RJF acquired information about the quality of different food sources, which was utilised after a change in environmental conditions. Contrary to this, layers gained less information during foraging and showed an impaired spatial learning ability compared to RJF, and in this respect, layers showed a lower degree of adaptability. Chronic stress impaired the learning capacity of both breeds but RJF seemed to be overall faster to learn to locate food in a spatial learning task. Furthermore, stressed RJF started to eat faster in the spatial learning test than non-stressed RJF, and contrary to this, stressed layers showed a more passive response by prolonging the time to start feeding compared to non-stressed layers. This indicates a more active response to stress in RJF than in layers. Similarly, when RJF and layers were exposed to food deprivation, RJF showed an active response by increasing their time spent on foraging behaviour. The general results in this thesis most likely reflect different adaptive strategies, where RJF appear to be better adapted to a stochastic environment, and the domestic strains to grow and produce egg in a more predictable environment. The findings are in accordance with the resource allocation theory, which suggests that animals selected for high production are expected to reallocate a high proportion of resources into production traits and hence fewer resources might be left to other biological processes, e.g. exploratory behaviour. Selection for high production seems to influence the ability of chickens to cope with a changing environment, which may have implications for the welfare of chickens in a production environment.
110

Characterisation Of Dna From Archaeological Wheat (triticum L.) Seeds From Anatolia

Somel, Mehmet 01 January 2003 (has links) (PDF)
Ancient DNA analysis of archaeological wheat remains may serve to clarify unknown or controversial points in the history of wheat. In the first part of this study, extraction and amplification of DNA from Anatolian charred ancient wheat seeds obtained from different locations and ages was attempted. None of the our extraction samples yielded any PCR amplification. The possible reasons for this result were investigated by constructing an artificial charring experiment. The results suggest that the chances of obtaining DNA from the charred archaeological samples used in this study by the methods used are very low. Moreover, strong PCR inhibition by these charred seed extracts was observed. The second part of the study aimed to develop new DNA based markers for ancient wheat DNA analysis. Markers linked to the brittle rachis character exhibiting domestication status were sought, but no result was obtained. Primers targeting plasmon sequences were developed and tested. A primer pair amplifying a 400 bp portion of the chloroplast TrnLTrnF intergenic region was focused upon. A short piece of this region was amplified using ancient wheat DNA extracted in another study. This short piece appeared non-polymorphicupon sequencing. The sequence spanning a wider portion of this region contained a number of length polymorphisms. Phylogenetic reconstruction using maximum parsimony showed that these polymorphisms were able to distinguish wheat taxa at the maternal ancestor level.

Page generated in 0.1388 seconds