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Venkatasalam, Nachiyappan. "Crosswind assessment of trains on different ground configurations." Thesis, KTH, Järnvägsteknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-129712.
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Cross wind analysis is one of the important safety measures for rail vehicle certification. The objective of this study is to identify which vehicle certification ground setup, true flat ground (TFG) or single track ballast and rail (STBR) represents a more realistic ground setup with atmospheric boundary layer (ABL) wind inlet and also to represent an embankment scenario. A streamlined high speed train ICE3 and a conventional Regional train are taken for the analysis to represent both categories. CFD is used as a tool for calculations. The best practice recommended by the AeroTRAIN project is used for the CFD approach. The analysis is done for various configurations including STBR, TFG, embankments, ground roughness, moving ground, non-moving ground, block profile inlet, ABL inlet, model scale and full scale setups. The Regional train shows higher roll moment coefficient about lee rail (Cmx,lee) compared to the ICE3 train, whereas the ICE3 train has a higher lift force coefficient than the Regional train. STBR setup shows a higher force and moment coefficient compared to TFG. The STBR setup represents the more realistic setup of moving rough ground with ABL wind inlet and also the realistic embankment scenario.
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Barton, Thomas. "Music place and the creation of cultural memory: A study of Benjamin Brittten's War Requiem, John Adams' On the Transmigration of Souls and Steve Reich's Different Trains." Thesis, Royal Holloway, University of London, 2011. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.537504.
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Antunes, Adeline. "Le transport intraflagellaire : construction et déplacement des trains dans le flagelle du trypanosome." Electronic Thesis or Diss., Sorbonne université, 2020. http://www.theses.fr/2020SORUS080.
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Les cils et flagelles sont constitués d’un cylindre de neuf doublets de microtubules périphériques appelé axonème. Ils contiennent au moins 500 protéines et leur construction s’effectue essentiellement par addition de nouvelles sous-unités à l’extrémité distale. Les composants du flagelle y sont acheminés par le transport intraflagellaire (IFT), le déplacement de « trains » formés de deux complexes de protéines, entre la membrane flagellaire et les doublets de microtubules par des moteurs moléculaires de type kinésine et dynéine. Mon projet de thèse s’articule autour du rôle et du fonctionnement de l’IFT en utilisant comme modèle d’étude le protiste Trypanosoma brucei. Les objectifs de ma thèse étaient (i) de déterminer comment les trains IFT sont assemblés en établissant le lien entre leur composition moléculaire et leur structure et (ii) d’établir le trajet emprunté par les trains IFT au sein de l’organite. En combinant des approches de microscopie photonique et de microscopie électronique après ciblage par ARNi de gènes encodant des protéines constituants les trains IFT, nous avons mis en évidence leur contribution à la construction des trains IFT et la régulation de leur longueur. Nous proposons un nouveau modèle pour expliquer la formation des trains et leur entrée dans le compartiment flagellaire. Par microscopie électronique tridimensionnelle (FIB-SEM), nous avons démontré qu’après leur assemblage, les trains IFT sont localisés au niveau de seulement 4 doublets de microtubules sur les 9 disponibles. Ces résultats ont été obtenus à la fois in vitro et ex vivo sur des parasites se développant chez la mouche tsé-tsé. La comparaison des résultats avec la littérature met en exergue la flexibilité du transport en fonction de l’anatomie des cils et flagellesCilia and flagella are essential organelles composed of 9 doublet microtubules. They contain at least 500 proteins and their construction is mainly done by adding new subunits at the distal end. They are transported byIntraflagellar transport (IFT), the movement of trains composedof two protein complexes between the flagellar membrane and the microtubule doublets by driven by molecular kinesin and dynein motors. My thesis project is based on the role and functioning of IFT using the protistTrypanosoma brucei as a model organism. The goal of my thesis project was (i) to determine how IFT trains are assembled by establishing the link between their molecular composition and their structure and (ii) to establish the route taken by IFT trains within the flagella. By combining light microscopy and electron microscopy approaches after RNAi targeting of genes coding for IFT train components, we have demonstrated their contribution to the construction of IFT trains. We propose a new model to explain train formation and their entry in the flagellum. By three-dimensional electron microscopy (FIB-SEM), we have also shown where IFT trains are located. Trains are specifically found on 4 microtubule doublets out of the 9 available. These results have been obtained bothin vitro and ex vivousing parasites developing in the tsetse fly.Comparison of the results with the literature highlights the flexibility of transport depending on the anatomy of cilia and flagella
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Sundman, Ann-Sofie. "Personality in piglets : Is there a difference in personality traits between pigs from different teat order positions?" Thesis, Linköpings universitet, Institutionen för fysik, kemi och biologi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-69596.
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The objective of this study was to determine whether piglets from different positions in the teat order differ inpersonality. Teat order is established within the first days after birth and from that time, piglets basically suckle fromthe same teat pair until weaning. Three piglets from each of 21 litters (n = 63) were chosen for their place in teatorder; one from anterior teats (A), one from middle teats (B), and one from rear teats (C). The piglets were observedduring suckling, undisturbed behaviour, a novel object test and a straw test. A total of 13 behaviours were registered.A significant difference (P < 0.05) between A, B and C piglets was found in the frequency of disputes duringsuckling, where B piglets were most involved in disputes and C piglets least involved, and a tendency (P < 0.1) wasfound in frequency of undisturbed playing and exploration. A piglets played and explored most, and C piglets least.Four interesting components were found with principal component analysis, explaining 62.4 % of the total variation.These represent personality traits tentatively named exploration, playfulness, food interest and straw interest. Therewere no significant differences in personality type between A, B and C piglets although a tendency that A pigletswere most playful and C piglets were least playful was found. Hence, this study suggests that there might be acorrelation between teat order position and personality.
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Webb, Kimberly Renee. "Efficacy of different educational methods for a high school prenatal substance use prevention and nutrition program." [Johnson City, Tenn. : East Tennessee State University], 2004. http://etd-submit.etsu.edu/etd/theses/available/etd-0331104-090807/unrestricted/WebbK041504F.pdf.
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Thesis (M.S.)--East Tennessee State University, 2004.Title from electronic submission form. ETSU ETD database URN: etd-0331104-090807. Includes bibliographical references. Also available via Internet at the UMI web site.
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Baum, Oliver. "HSOH an elusive species with many different traits." Göttingen Cuvillier, 2008. http://d-nb.info/991202996/04.
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Alves, Fábio Rui Lima. "Traits of benthic assemblages subjected to different trawling pressure." Master's thesis, Universidade de Aveiro, 2014. http://hdl.handle.net/10773/12618.
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Mestrado em Biologia MarinhaOver time, fishing techniques improved as a response to the needs of Human populations. Alongside with the increase of fishing activities important changes in the marine ecosystems were also observed (e.g. overexploitation of stocks and habitat loss or degradation). Overfishing, bycatch, discards and ghost-fishing are some of the most discussed impacts of fishing activities, but the effect of bottom trawling should not be underestimated, since it has been proven to have a significant impact of benthic communities. Up to now the knowledge about fisheries impact on deep-sea benthic macrofaunal assemblages is scarce in Europe and, for all we know, even more in Portuguese fishery grounds. However, assessing fisheries impacts on marine ecosystems and ensuring fisheries sustainability is essential to achieve proper management of the sector and for the conservation of marine resources. In this context, the present study was carried out aiming to investigate the impact of continued trawling on benthic macrofaunal assemblages from deep muddy grounds of the burrowing crustacean Nephropsnorvegicus (Norway lobster) by comparing towed and untowed stations regarding their biodiversity, density, biomass, trophic structure, life style and body size spectra. Seven stations were studied along a transect of a highly Fished zone (Area 1, Stations 1 and 2), a Non-fished zone (Area 2, Stations 3, 4 and 5) and another Fished zone (Area 3, stations 6 and 7) during a cruise carried out in September 2012 onboard the RV Garcia del Cid (Consejo Superior de Investigaciones Cientificas) in the framework of the project IMPACT (Universidade do Algarve). In general Fished zones showed decreased heterogeneity and although the results of the multivariate analysis support a significant difference between Fished and Non-fished areas the comparisons of the biodiversity (number of families, H’, EF(n)), density and biomass in Fished and Non-fished zones are inconclusive, inconsistent or even contradict most of the literature predictions. When the trophic structure and life style spectra of the assemblages are compared the decreased heterogeneity of the Fished zones is confirmed but other patterns emerge such as the higher relative contribution of free living organisms, especially meiofaunal predators, grazers and browsers in Fished zones in contrast with the higher relative contribution of tubiculous animals in Non-fished zones, the dominance of deposit feeders over detritus feeders in Fished areas and the presence of large suspension feeders in Non-fished zones. The interpretation of the observed taxonomic and trophic structure of the assemblages is complex and must take into account sources of variability introduced by unwanted alterations of the sampling strategy and habitat heterogeneities in the study area. Overall this study constitutes a good asset for the knowledge of bottom trawling impact on macrofaunal assemblages from deep-sea habitats. It is at this point impossible to estimate the impact of 60 years of bottom trawling and regular monitoring studies are desirable. Some methodological issues arose which can be used as recommendations for future assessments of trawling impacts and monitoring of seafloor integrity: selection of adequate control area(s) must consider habitat heterogeneity, selection of the sampling gear must consider the possible selectivity of smaller samplers; the number of replicates per stations should be sufficiently large to ensure representativeness of biodiversity, abundance and biomass assessment and significance of the comparative tests; and finally, trophic structure, life style and body size spectra showed to be good indicators of change and therefore they should become a more common tool on the assessment of trawling impact.
Ao longo do tempo, as artes de pesca têm vindo a evoluir como resposta às crescentes necessidades da população Humana. Ao mesmo tempo que a indústria pesqueira tem vindo a crescer têm-se vindo a observar importantes mudanças nos ecossistemas marinhos (ex. sobreexploração de recursos pesqueiros e perda ou degradação da biodiversidade). A sobre-pesca, pesca de espécies acessórias, rejeições e pesca fantasma são os impactos causados pelas pescas que geram maior preocupação, mas o efeito devastador de pesca de arrasto no fundo oceânico não deve ser subestimado, devido ao seu reconhecido impacto nas comunidades bentónicas. Até aos dias de hoje o conhecimento acerca do impacto em comunidades bentónicas de mar profundo é escasso na Europa e ainda menor em fundos oceânicos Portugueses. Contudo, a avaliação dos impactos da indústria pesqueira em fundos marinhos e nos seus ecossistemas é essencial para obter uma gestão apropriada do setor e para um uso mais sustentável dos recursos biológicos. Neste contexto, este estudo tem como objectivo avaliar o impacto da contínua pressão das pescas de arrasto em comunidades de macrofauna bentónica em fundos lamosos de mar profundo nos habitats do crustáceo Nephrops norvegicus (Lagostim), através da comparação de fundos impactados com fundos nãoimpactados, considerando a análise da biodiversidade, densidade, biomassa, estrutura trófica, espectro de tamanhos e modos de vida. Foram estudadas sete estações ao longo de um transeto, das quais, as primeiras duas estações (estações 1 e 2, área 1) correspondem a uma zona impactada, as seguintes três estações a uma zona não sujeita a pesca de arrasto (estações 3, 4 e 5, área 2,) e, por fim, duas estações (estações 6 e 7, área 3) novamente sujeitas a pressões de pesca de arrasto. A expedição oceanográfica foi realizada em Setembro de 2012 a bordo do navio RV Garcia del Cid (Consejo Superior de Investigaciones Cientificas) inserido no projecto IMPACT (Universidade do Algarve). De um modo geral, as zonas pescadas mostram uma menor heterogeneidade e embora os resultados da análise multivariada suportem uma diferença significante entre zonas pescadas e não-pescadas, as comparações de biodiversidade (número de familias, H’, EF(n)), densidade e biomassa) em zonas pescadas e não-pescadas são inconclusivas, inconsistentes e por vezes contraditórias quando comparadas com a literatura. Quando a estrutura trófica e o estilo de vida das comunidades são comparados, a pequena heterogeneidade nas zonas pescadas é confirmada, mas outros factores emergem, como a contribuição de animais de mobilidade livre, especialmente predadores de meiofauna e raspadores em zonas pescadas, em contraste com a alta contribuição de animais tubículos em zonas não-pescadas, a dominância de detritívoros que se alimentam de matéria orgânica associada ao sedimento sobre detritívoros que se alimentam de matéria orgânica particulada, em zonas pescadas e a presença de grandes suspensívoros em zonas não-pescadas. A interpretação dos resultados taxonómicos e da estrutura trófica é complexa e deve ter em conta variações introduzidas por alterações não esperadas na estratégia de amostragem e diferenças de habitat das zonas estudadas. No geral, este estudo contribui para o conhecimento do impacto de pescas de arrasto em comunidades de macrofauna bentónica de ambientes marinhos profundos. Nestas condições é dificil avaliar quais os efeitos de 60 anos de pressões de pesca de arrasto e futuros estudos são desejáveis. Surgiram alguns problemas metodológicos, o que pode servir como recomendações para futuros estudos de impactos de pesca de arrasto e monitorização da integridade dos fundos oceânicos: uma boa selecção de áreas controlo deve ser considerada; a seleção de tipos de amostradores deve ter em conta a selectividade de amostradores menores; o número de réplicas por estação deve ser suficiente para garantir representatividade da biodiversidade, abundância e biomassa, e a significância de testes comparativos; e por fim, estrutura trófica, espetro de tamanhos e modo de vida mostraram ser bons indicadores de diferenças entre as duas zonas, logo deveriam ser usados mais regularmente na avaliação de impactos de pesca de arrasto.
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Backe, Daniel, and Johan Dankvardt. "Can Psychopathic Traits Predict Different Roles in Bullying: Perpetration or Victimization." Thesis, Örebro universitet, Institutionen för juridik, psykologi och socialt arbete, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-65445.
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Bullying and being a victim of bullying have serious consequences for adolescents. Why do adolescents bully others and why do some become victims, could it be because of their personalities or maybe even problematic personality traits. In the current study, we will investigate if psychopathy or if any of the dimensions of psychopathy separately, can predict engagement in bullying or being a victim of bullying. The data that is used in this study is taken from a community sample from 7th through 8th grade. The results in this study show that psychopathy as an entirety and the interpersonal and behavioral dimension of psychopathy do in fact predict some levels of engagement in bullying, while the affective dimension did not. Psychopathy and the different dimensions did not significantly predict becoming a victim of bullying. In conclusion, traits like impulsivity and grandiosity can to some extent predict engagement in bullying, however psychopathy nor the dimension do not predict being a victim of bullying.Att mobba andra eller att falla offer för mobbning har allvarliga konsekvenser. Hur kommer det sig att vissa tonåringar mobbar andra och att andra blir offer; kan det möjligtvis vara på grund av personlighetsdrag eller mer problematiska personlighetsdrag. I denna studie kommer vi undersöka om psykopati i sin helhet eller någon av psykopatins dimensioner separat kan förutse att man mobbar andra eller att bli mobbad. De data som har använts i denna studie är från en stor datainsamling med ett urval bestående av ungdomar i sjunde och åttonde klass. Resultaten från denna studie visar att de två dimensionerna interpersonella och beteende till viss del kunde förutse att mobba andra. Psykopati eller någon av dess dimensioner kunde dock inte signifikant predicera att man blev mobbad. Sammanfattningsvis så visar studien att psykopatiska personlighetsdrag som att vara impulsiv och grandios till viss del kan predicera att mobba andra men inte predicera att man blir ett offer för mobbning.
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Burger, Niel. "Flammability traits of fynbos species with different post-fire regeneration strategies." Bachelor's thesis, University of Cape Town, 2010. http://hdl.handle.net/11427/24398.
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Wild fire is an important disturbance regime that shape global biome distributions and maintain the structure, function and biological diversity of plant communities in fire-prone environments. Physical, chemical and architectural properties are known to affect plant flammability, but few studies explore how these traits contribute to fire properties at the individual level and how flammability is influence by regeneration strategy. The flammability and traits that contribute to it is investigated in 15 co-occurring fynbos and forest species with burning experiments performed at Bain's Kloof Pass, Western Cape of South Africa. Eight species are characterised by fire-stimulated (mostly seeders) and seven by non-fire-stimulated recruitment (mostly resprouters). Results across all species are consistent with other studies which indicate that the proportion of dead and fine fuel is significant predictors of flammability. Significantly higher flame temperatures and values for % fuel burned were recorded for FSR's relative to NFSR's and these differences are attributed to significant differences in % fuel dead, fuel bed porosity and packing ratio. This is consistent with the hypothesis that flammability is most like to be selected for in fire-stimulated recruiters (first colonisers after fire) where a combination of increased flammability and recurrent success enhance their fitness in the fire-prone environment. This study indicates that cultivation of the highly flammable species E. rhinocerotis, Stoebe sp., M. muricata, Erica sp. and P. amplexicaulus on urban fringes should avoided to reduce fire-risk and thus increase human safety.
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Ahmad, Husain Abdulrahman. "Dynamic Braking Control for Accurate Train Braking Distance Estimation under Different Operating Conditions." Diss., Virginia Tech, 2013. http://hdl.handle.net/10919/19322.
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The application of Model Reference Adaptive Control (MRAC) for train dynamic braking is investigated in order to control dynamic braking forces while remaining within the allowable adhesion and coupler forces. This control method can accurately determine the train braking distance. One of the critical factors in Positive Train Control (PTC) is accurately estimating train braking distance under different operating conditions. Accurate estimation of the braking distance will allow trains to be spaced closer together, with reasonable confidence that they will stop without causing a collision. This study develops a dynamic model of a train consist based on a multibody formulation of railcars, trucks (bogies), and suspensions. The study includes the derivation of the mathematical model and the results of a numerical study in Matlab. A three-railcar model is used for performing a parametric study to evaluate how various elements will affect the train stopping distance from an initial speed. Parameters that can be varied in the model include initial train speed, railcar weight, wheel-rail interface condition, and dynamic braking force. Other parameters included in the model are aerodynamic drag forces and air brake forces. An MRAC system is developed to control the amount of current through traction motors under various wheel/rail adhesion conditions while braking. Minimizing the braking distance of a train requires the dynamic braking forces to be maximized within the available wheel/rail adhesion. Excessively large dynamic braking can cause wheel lockup that can damage the wheels and rail. Excessive braking forces can also cause large buff loads at the couplers. For DC traction motors, an MRAC system is used to control the current supplied to the traction motors. This motor current is directly proportional to the dynamic braking force. In addition, the MRAC system is also used to control the train speed by controlling the synchronous speed of the AC traction motors. The goal of both control systems for DC and AC traction motors is to apply maximum available dynamic braking while avoiding wheel lockup and high coupler forces. The results of the study indicate that the MRAC system significantly improves braking distance while maintaining better wheel/rail adhesion and coupler dynamics during braking. Furthermore, according to this study, the braking distance can be accurately estimated when MRAC is used. The robustness of the MRAC system with respect to different parameters is investigated, and the results show an acceptable robust response behavior.
Ph. D.
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Clevinger, Elizabeth. "Mapping Quantitative Trait Loci for Soybean Quality Traits from Two Different Sources." Thesis, Virginia Tech, 2006. http://hdl.handle.net/10919/33468.
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Soybeans are economically and agriculturally the most important legume in the world, providing protein and oil to the food and animal feed industries and base ingredients for hundreds of chemical products. Their value could be enhanced, however, if the oil and protein content remained high and the oligosaccharide and phytate contents were lowered to make soybeans more acceptable for human and animal consumption.
A soybean population of 55 families segregating for genes controlling quality traits was chosen for this study. Both parental lines have high sucrose and low stachyose. The former contains a high level of phytate while the latter is low phytate. The objective of this experiment was to determine whether or not both parents had the same gene(s) for low stachyose. An additional objective was to determine quantitative trait loci (QTL) controlling quality traits: sucrose, stachyose and phytate. An acetonitrile precipitation method and a modified colorimetric method were used to determine amounts of sugars and phytate, respectively. The phenotypic data for stachyose was analyzed and it was determined that two recessive genes control low stachyose content in this population. A map was constructed using 141 SSR markers and 15 molecular linkage groups (MLGs) were identified. After analyzing trait and marker data in QTL Cartographer, potential QTL were found on MLGs: B1, C2, D1b, F, M and N. Sucrose and stachyose QTL were identified on B1, C2, M and N. Phytate QTL were observed on B1, D1b, F and N. The markers identified for quality traits in this population may be useful in marker-assisted selection and the germplasm should be useful for the development of a cultivar.Master of Science
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Garcia, Neto Baltasar Fernandes. "Power of QTL mapping of different genome-wide association methods for traits under different genetic structures : a simulation study /." Universidade Estadual Paulista (UNESP), 2018. http://hdl.handle.net/11449/152982.
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
A complexidade das características que podem apresentar diferentes estruturas de ação gênica como, por exemplo, poligênicas ou afetadas por genes de efeito maior, aliado a diferentes herdabilidades, entre outros fatores, tornam a detecção de QTLs desafiadora. Diversos métodos têm sido empregados com o intuito de realizar estudos de associação ampla do genoma (GWAS), objetivando o mapeamento de QTL. A metodologia weighted single-step GBLUP (wssGBLUP), por exemplo, é uma alternativa para a realização de GWAS, que permite o uso simultâneo de informações genotípicas, de pedigree e fenotípicas, mesmo de animais não genotipados. Métodos Bayesianos também são utilizados para a realização de GWAS, partindo da premissa básica de que a variância observada pode variar em cada locus em uma distribuição a priori específica. O objetivo do presente estudo foi avaliar, por meio de simulações, quais métodos, dentre os avaliados, mais auxiliaria na identificação de QTLs para características poligênicas e afetadas por genes de efeito maior, apresentando diferentes herdabilidades. Utilizamos os métodos: wssGBLUP, com a inclusão ou não de informação adicional fenotípica de animais não genotipados e dois distintos ponderadores para os marcadores, onde w1 representou a mesma ponderação (w1=1) e w2 a ponderação calculada de acordo com o processo de iteração anterior (w1) ; Bayes C, assumindo dois valores para π (π=0.99 and π=0.999), onde π é a proporção de SNPs não incluída no modelo, além do LASSO Bayesiano. Os resultados mostraram que para cenários poligênicos o poder de detecção é menor e o uso adicional de fenótipos de animais não genotipados pode ajudar na detecção, ainda que com pouca intensidade. Para cenários com característica sob efeito maior, houve maior poder na detecção de QTL pelos diferentes métodos em comparação aos cenários poligênicos com destaque para a leve vantagem do método Bayes C. A inclusão de informação fenotípica adicional, entretanto, causou viés nas estimativas e atrapalhou o desempenho do wssGBLUP na presença de QTL com efeito maior. O aumento da v herdabilidade para ambas as estruturas melhorou o desempenho dos métodos e o poder de mapeamento. O método mais adequado para a detecção de QTL depende da estrutura genética e da herdabilidade da característica, não existindo um método que seja superior para todos os cenários.
The complexity of the traits that can present different genetic structures, such as polygenic or affected by genes of major effect, in addition to different heritabilities, among other factors, make the detection of QTLs challenging. Several methods have been employed with the purpose of performing genome wide association studies (GWAS), aiming the mapping of QTL. The single-step weighted GBLUP (wssGBLUP) method, for example, is an alternative to GWAS, which allows the simultaneous use of genotypic, pedigree and phenotypic information, even from non-genotyped animals. Bayesian methods are also used to perform GWAS, starting from the basic premise that the observed variance can vary at each locus with a specific priori distribution. The objective of the present study was to evaluate, through simulation, which methods, among the evaluated ones, more assist in the identification of QTLs for polygenic and major gene affected traits, presenting different heritabilities. We used the following methods: wssGBLUP, with or without additional phenotypic information from non-genotyped animals and two different weights for markers, where w1 represented the same weight (w1=1) and w2 the weight calculated according to the previous iteration process (w1); Bayes C, assuming two values for π (π = 0.99 and π = 0.999), where π is the proportion of SNPs not included in the model, and Bayesian LASSO. The results showed that for polygenic scenarios the detection power is lower and the additional use of phenotypes from non-genotyped animals may help in the detection, yet with low intensity. For scenarios with major effect, there was greater power in the detection of QTL by all different methods with slighter superior performance for the Bayes C method. However, the inclusion of additional phenotypic information caused bias in the estimates and harmed the performance of the wssGBLUP in the presence of major QTL. The increase in heritability for both structures improved the performance of the methods and the power of mapping. The most suitable method for the iii detection of QTL is dependent on the genetic structure and the heritability of the trait, and there is not a superior method for all scenarios.
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Morrogh, Bernard Maria. "ECOPHYSIOLOGICAL ANALYSIS OF YIELD DETERMINATION IN SOYBEAN OF DIFFERENT RELATIVE MATURITIES." UKnowledge, 2018. https://uknowledge.uky.edu/pss_etds/108.
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Soybean yield differences are a combination of the genotype, environmental conditions, and management practices. Understanding how these factors interact through the analysis of the components involved in yield determination, provides a way to increase potential and actual yields in Kentucky.
Two irrigated experiments were conducted to quantify differences in the mechanisms of yield determination across soybean maturity groups (MG) 2 to 5 (Chapter 1), and to quantify management options (seeding rate and choice of MG cultivar) that increase yield potential of double crop soybean systems (Chapter 2).
Results showed that cultivars used different physiological strategies to achieve high yields, but these were not always consistent across the environments studied. High yields were often associated to a higher efficiency partitioning biomass to seeds that lead to a higher seed number in some cultivars, as well as associated to low seed growth rates (Chapter 1). The choice of MG cultivar had a greater impact on double-crop soybean yields than increasing seeding rates from 40 to 54 seed m-2. The higher seeding rate increased yields by 5% without an interaction with cultivar. Optimal MG choices for double-crop soybean in KY were dependent on the environment.
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Maniatis, Nikolaos. "Quantitative genetic analyses of growth traits in sheep under different models of inheritance." Thesis, Imperial College London, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.341920.
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Tlhoaele, Kebaabetswe. "Do differences in personality traits affect how drivers experience music at different intensities?" Thesis, Rhodes University, 2016. http://hdl.handle.net/10962/3695.
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Various researchers have investigated contributing factors towards the number of acute traffic incidences in and around Southern Africa. Some of these contributing factors include: the skills component of the driver predominately attributed to driving experience as well as the behavioural component influenced by the driver’s natural predisposition, individual differences and personality traits. In order to manage these factors drivers have developed varying coping mechanisms. One of these coping mechanisms is listening to music while driving, which is readily available in most cars and extensively used predominately during long duration driving. Listening to music neither increases one’s driving duration (as opposed to taking several breaks), nor does it interfere with the physical movements of driving (in the manner that eating and drinking may), but it might impact the concentration and attention of some drivers. This is based on the notion that music is assumed to impact arousal and cognitive ability. While there are several studies on the effect of music on driving performance and personality traits very few studies have looked at whether music has a positive or negative effect on driving performance based on differences in personality traits; and whether the extent of this effect might differ for different intensities of music? Consequently, this study aims to understand and determine the extent to which different personality traits predict the effect that listening to different music intensities has on driving performance. The impact of differing music conditions on the different personality traits used a repeated measures design and a between group design with respect to the personality traits with a sample size of (n=25)-16 females and 9 males-and their ages ranged between 19-35 years of age. The average age and standard deviation for this sample size was 22 years±2. A low-fidelity driving simulator task was utilised in order to provide a controllable, repeatable and a safe environment as compared to a real road situation. Personality was assessed using an online Big-Five Inventory scale (extraversion, agreeableness, conscientiousness, neuroticism, openness). All the different personality groups completed three conditions (45 minutes each) in a randomised order (without music, moderately loud music and loud music). Psychophysiological parameters i.e. heart rate frequency (HRF), heart rate variability (HRV) and eye movements (pupil diameter, eye speeds, fixation duration, blink frequency and blink duration) and driving performance were measured continuously. Subjective performance Multidimensional Driving Style Inventory was measured once-off prior to completion of the testing sessions, whilst the NASA-Task Load Index scale and Perceived control of participants were assessed after each condition. The expected outcomes revealed that music had an effect on objective driving performance (tracking deviation and reaction time) and psychophysiological measures only for participants of certain personality types while other personality types were unaffected by music. The subjective performance measures did not follow the same trend as objective performance measures. The conditions did not reveal an effect on driving performance, for most of the psychophysiological parameters and subjective measures. There was mainly a significant time on task effect and interactional effects on the psychophysiological measures (physiological and oculomotor) parameters at (p<0.05), but not on the subjective measures as anticipated. The study illustrated that the there are differences between personality traits. There was difficulty in the interpretation of the results based on the complexity of the findings for which each hypothesis was partially accepted. The research may establish practical implications for traffic safety campaigns in South Africa, as well as influence driving education for citizens. Assessing the personality trait would help to form an understanding as to which of the personality traits might be affected negatively from listening to music while driving and those that might benefit. Moreover, this study may assist motorists in understanding the implications of listening to music while driving as this may sometimes elicit risky driving behaviour and possibly cause an accident that may result in death.
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Khaowong, Samorn. "Comparing different methods of the Escalator Boxcar Train based on the Daphnia model." Thesis, Mälardalens högskola, Akademin för utbildning, kultur och kommunikation, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-26558.
Full textAbstract:
Escalator Boxcar Train (EBT) is a numerical analysis used to solve physiologically structured population models (PSPMs) and has been presented in two different variations. This report describes a study using simulation and information from preceding experiments, as well as observations from natural biological systems of Daphnia and humans, in order to attain empirical comparisons between the two EBT methods. The results of the study demonstrate that the algorithms from both methods are equivalent, and that application of EBT in PSPMs does not alter natural biological systems.
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Althaus, Jon. "Performance & Carcass Traits of Swine of Four Different Phenotypes & Three USDA Grades." TopSCHOLAR®, 1988. https://digitalcommons.wku.edu/theses/2108.
Full textAbstract:
The purpose of this study was to compare the performance and carcass characteristics of swine of four different phenotypes and three USDA grades.
Hogs were placed into phenotypic groups of 24 each and penned by group. These pens were ideal, cutability, light muscled, fat, VS US and US The hops were fed a 16% corn and soybean meal ration fortified with appropriate minerals and vitamins. They were housed in a total confinement curtain-sided Kentucky plan building with a partially slatted floor. The hogs were weighed at 6-week intervals throughout the project to monitor average daily gain and pen feed efficiency. Twelve hogs from each pen were slaughtered at approximately 2(0 pounds and the remaining twelve pigs at approximately 230 pounds to determine if differences in performance and carcass characteristics remained consistent or became greater at heavier weights. Carcass weight, backfat at the tenth rib and last rib, length and loin eye area were obtained on each carcass. Data were adjusted to the group means for the heavy and light groups using least squares analysis. The mean for the heavy group was 255 pounds and the mean for light group was 229 pounds.
Results of the study showed the ideal pen to have significantly higher (P<.01) average daily gain than all other pens at 229 pounds and significantly higher (P<.01) average daily gain than the cutability, US #2, and US #3 pens at 255 pounds. The two leanest and heaviest muscled pens were cutability and US #1. These two pens had significantly (P<.01) lower fat and larger loin eye area than the light muscled. US #3 and fat pens at 229 pounds. The fat pen had significantly (P.-01) greater backfat, smaller loin eye area, and lower percent muscle than all other pens in the heavy group. The cutability and US #1 pens had significantly higher (P<.01) percent muscle than the light muscled, US #3, and fat pens. The ideal, US #1, and cutability pens had significantly (P<.01) higher lean gain per day on test than all other pens with the exception of the light muscled pen taken to the heavier slaughter weight.
The ideal, cutabilitv, and US #1 hogs had the lowest average values for feed per unit of lean gain. The fat pen required 2.5 pounds more feed to produce a pound of loan gain than ideal. cutability or US #1 pens. The US #1 group required 1.50 fewer pounds of feed per pound of lean growth than US #2 and #3 groups.
These results indicate that the ideal pen was superior in terms of performance and lean growth. The cutabilitv and US #1 pen were the leanest and heaviest muscled. The fat group was extremely high in backfat, low in loin eye area and the most inefficient in converting feed into lean tissue.
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Chamberland, Alexander Alvina. ""You don't always like your sisters, but you always love them" : Trans feminine accounts of misogyny, sisterhood and difference in New York City." Thesis, Södertörns högskola, Institutionen för kultur och lärande, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-28093.
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This thesis examines six trans feminine informants in New York City's experiences of oppression, trans-misogyny, femi-negativity, racism, and classism, as well as their experiences of community support, conflicts and resistance practices through the lens of the term sisterhood and the practice of sisterhooding. Focus has also been placed on the informant's views on allyship and coalition, and their relationship to other communities, such as the trans masculine community. The research has been conducted through in-depth, semi-structured, qualitative interviews with six trans feminine activists in New York City. The informant group was heterogenous in regards to age, race/ethnicity, as well as in regards to where in the city they resided and which parts of the movement they were engaged in. My findings follow Jenny Gunnarsson Payne's (2006) theory on sisterhood as an empty signifier, as my informants had different definition's of the term and concept of sisterhood, and while all of them expressed ambivalences towards the term and concept, they also all used the term to varying degrees. Several saw advantages in using the term to describe kinship and solidarity between trans feminine people. The participating informants in the study listed several different conflicts within trans feminine movements. Many of them were generally skeptical to conflicts, especially to those related to cattiness, competition, language and terminology – sentiment's which I agree with, albeit with the addition, which some of my informant's also stressed, that certain conflict's regarding differences in oppressions related to intersectional hierarchies, may be necessary. In the concluding chapter I argue for an understanding of trans-sisterhood based both on an understanding of similarities and difference's in experience and an understanding of solidarity that prioritizes the voices, perspectives and leadership of the most marginalized. My informant's described grave street harassment, employment discrimination and experiences of desexualization from gay/queer men and hypersexualization from so-called tranny chasers. Because of the lack of previous research on trans femininities from the perspective of an understanding of the specific oppressions of trans-misogyny and femi-negativity, this thesis has had a broad, rather then detailed, perspective and following in the foot steps of Julia Serano (2007) argues for an analysis on the position of trans women and other trans femininities beyond the gender neutral category of transgender. A majority of my informants sharp statements on the subordination of trans femininity to trans masculinity supports my argument for the need of more research in the field of trans femininity studies with perspectives from both transgender studies and critical femininity studies.Genom djupintervjuer undersöker uppsatsen sex olika transfeminina informanter i New Yorks erfarenheter av förtryck, trans-misogyni, femi-negativitet, rasism och klassism, såväl som deras erfarenheter av stöd, konflikter och motståndspraktiker, vilket sker genom ett undersökande av deras inställning till termen systerskap och den systerskapande praktiken. Fokus har också legat på informanternas syn på allierade, koalitioner och deras relation till andra grupper, som till exempel transmaskulina personer. För att fånga in en intersektionell bredd av erfarenheter var informantgruppen heterogen i förhållande till ålder, “ras”/etnicitet, samt i förhållande till var de bodde i staden och vilka delar av rörelsen de var engagerade i. Informanterna beskrev grova erfarenheter av trakasserier på gatorna och diskriminering på arbetsmarknaden, samt erfarenheter av hypersexualisering från så kallade tranny chaser's och avsexualisering från homosexuella och queera män. I linje med Jenny Gunnarsson Payne's (2006) teori om systerskap som tom signifikant, hade mina informanter många olika definitioner av begreppet systerskap, och medan många av dem uttryckte ambivalenser i förhållande till termen, använde sig alla av begreppet i varierande grad. Flera av dem såg stora fördelar i att använda termen för att beskriva samhörighet och solidaritet mellan transfeminina. Mina informanter listade flera olika konflikter inom de transfeminina rörelsen och var allmänt skeptiska till konflikter, framförallt till de som handlade om elaka attityder, tävlande, språk och terminologi – vilket jag håller med dem om, med tillägget, som en del informanter också tydliggjorde, att visa konflikter gällande intersektionella hierarkier kan vara nödvändiga. Jag argumenterar för en förståelse av trans-systerskap som baseras både i en förståelse av likheter och skillnader i erfarenheter sam i en förståelse av solidaritet som prioriterar perspektiven och ledarskapet av de mest marginaliserade rösterna. Uppsatsen har ett brett perspektiv eftersom det tidigare gjorts väldigt lite forskning om transfemininiter utifrån den specifika förståelsen av trans-misogyni och femi-negativitet. I likhet med Julia Serano (2007) argumenterar jag för ett analyserande av transkvinnors och andra transfemininas situation bortanför trans som könsneutral kategori och får stöd i majoriteten av mina informanters skarpa uttalanden om den hierarkiska underordningen av transfemininitet gentemot transmaskulinitet. Slutligen menar jag att det behövs mer forskning inom fältet transfemininitetsstudier med perspektiv både från kritiska femininitetsstudier och transstudier.
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Clingan, Sarah E. "Trading sex for drugs, trading sex for money| Is there a difference." Thesis, California State University, Long Beach, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=1595227.
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Women who trade sex for drugs or money, a practice known as sex trading, are at risk for Human Immunodeficiency Virus (HIV) infection. This holds true even when controlling for such behaviors as crack use, and history of sexually transmitted infections (STIs). The purpose of this study was to explain differences among women who sex trade for drugs, money, both or neither. Participants were recruited by programs operated by the Center for Behavioral Research and Services (CBRS). The Risk Behavior Assessment (RBA), Barratt Impulsivity Scale (BIS), Eysenck Impulsiveness Scale (EIS), Displaced Aggression Questionnaire (DAQ), and Compulsive Sexual Behavior Inventory (CSBI) were administered to participants. A Generalized Logit model was created and the model included crack use, amphetamine use, impulsivity, and race. Displaced aggression and compulsive sexual behavior were found to be associated with sex trading. This study may help prevention specialists address specific issues unique to those who sex trade.
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Meléndez, Díaz William J. 1979. "The different levels of intent specifications : analysis and guidelines on tracing." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/86689.
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Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2001.Includes bibliographical references (p. 173).
by William J. Meléndez Díaz.
M.Eng.
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Lodge, Martin C. E. "On different tracks : institutions and railway regulation in Britain and Germany." Thesis, London School of Economics and Political Science (University of London), 2000. http://etheses.lse.ac.uk/1607/.
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This study analyses how institutional factors impact on processes of isomorphism in the design of regulatory regimes. It does so through a comparative examination of regulatory reform in the railway domain in Britain and Germany in three time periods, the post-First World War and the post-Second World War periods as well as the 1990s. It is argued that pressures for isomorphism, defined as the increasing homogenisation of a unit with other units in its policy environment, are exerted by several policy environments. These pressures can be distinguished in their degree of domain- and paradigm-orientation. Domain-orientation consists of regulatory change which is based on sector-specific sources, whereas paradigm-orientation involves the application of supposedly universal 'policy recipes' across policy domains. The study questions whether three institutional factors - the insulation of the regulatory space from coercive pressures, the insulation of the political-administrative nexus in the regulatory space and the insulation of the regulatory space from societal forces - can explain why in some cases reforms are domain-oriented, but, in other cases, reforms are paradigm-oriented. The comparative analysis of reform in British and German railway regulation provides three conclusions. First, in all cases, pressures for isomorphism emerging from different policy environments provided competing 'templates' for regulatory design ideas. Second, among the institutional factors, the insulation of the political-administrative nexus in the regulatory space was identified as the most important factor for explaining the orientation of the selected regulatory instruments. Third, in the light of the study's historical and institutional perspective, this thesis critically evaluates arguments proclaiming the emergence of a 'regulatory state' in contemporary Europe.
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Banda, Liveness Jessica. "Prediction of cow fertility based on productivity traits in dairy cattle under different production systems." Thesis, University of Edinburgh, 2014. http://hdl.handle.net/1842/10065.
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A study to examine factors that influence dairy cattle fertility was conducted in the United Kingdom (UK) and Malawi. Productivity data from the UK comprising 56,014 records from 574 Holstein cows were retrieved from a database at Scotland’s Rural College Dairy Research Centre in Dumfries. The cows were of either high (select) or average (control) genetic merit and fed total mixed rations with high or low forage. These formed four production systems - high forage select (HFS), low forage select (LFS), high forage control (HFC) and low forage control (LFC). Data from Malawi were obtained through a baseline survey in 67 smallholder farms and monitoring of 28 and 62 dairy cows from smallholder farms and a commercial farm, respectively. The breeds were Holstein-Friesians and Holstein-Friesian x Malawi Zebu crosses predominantly fed forages supplemented with concentrates. Some cows were fitted with accelerometers to enable monitoring of cow activity which was then related to cow fertility and energy balance. The data were analysed using descriptive statistics, mixed models and logistic regression models using SAS 9.3. The UK data showed that production system significantly (p<0.05) influenced milk yield, body energy content (BEC) and fertility. BEC is a trait that indicates absolute level of energy in the body per day regardless of energy use and intake the previous day. Daily milk yield of LFS cows was 35±0.1 (mean±SEM) litres which was significantly (p<0.05) higher than that of LFC (30.4±0.1 litres), HFS (27.5±0.1 litres) and HFC (24.3±0.1 litres) cows. LFS cows also had the highest milk yield acceleration to peak milk yield (0.51 litres/day/day) than (LFC 0.47±0.02 litres/day/day), HFC (0.47±0.03 litres/day/day) and HFS (0.46±0.03 litres/day/day) cows. The interval from calving to nadir BEC was 68±5, 83±6, 88±5 and 106±6 days for LFC, LFS, HFC and HFS cows, respectively. Days to first high luteal activity (DFHLA) and days to successful service (DSS) were significantly different with production system and genetic merit, respectively. LFC cows had DFHLA of 27±2 days (mean±SEM) which were significantly lower (p<0.05) than those of HFC (30±3 days), HFS (30±2 days) and LFS (35±3 days) cows. Average genetic merit cows had significantly lower (p<0.05) DSS (119±5 days, mean±SEM) than high genetic merit cows (132±5 days). Results from data collected in Malawi showed variations that reflected differences in management and other environmental factors. Average daily milk yield per lactation in Malawi was 13.3±4.9 (mean±SD) litres. Fertility traits in the UK herd were better than those in Malawi herds. The average DFHLA in Malawi was 79±29 days while in the UK it was 31±18 days. Cow activity in both the UK and Malawi farms varied with the feeding system, genetic merit and BEC. Select cows on home grown feeding system were more active (motion index =6250±40), stood longer (13.4±0.04 hours/day) and spent more time eating (5.6±0.32 hours/day, mean±SEM) than select cows on by products feeding system that had motion index, standing and eating time of 5166±37, 11.9±0.04 hours/day and 4.6±0.16 hours/day, respectively. Genetic merit, lactation number, days to first observed oestrus, calving BEC, service BEC and service milk yield were significant predictors of pregnancy to first insemination (p<0.05) while genetic merit, milk yield, percentage BEC between calving and service, service milk yield and service BEC were significant predictors (p<0.05) of pregnancy to the first three inseminations. Validation of models derived showed C-statistics of the receiver operating characteristic (ROC) curve of 0.66 (95% confidence interval (CI): 0.57 to 0.75) and 0.65 (CI: 0.55-0.75), respectively. It is concluded that genetic merit, feeding system, parity, energy status and stage of lactation are the major factors that determine the likelihood of achieving pregnancy following insemination. Models developed have a potential to predict the probability of pregnancy to an insemination at an acceptable level of accuracy.
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Dahlbäck, Simon, and Marcus Pettersson. "The Association Between Different Types of Psychopathic Traits and Peer Harassment: The Moderating Role of Gender." Thesis, Örebro universitet, Institutionen för juridik, psykologi och socialt arbete, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-72388.
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The purpose of the study was to examine whether gender moderated the association between psychopathic traits and peer harassment, as well as examining each psychopathic trait individually alongside the different harassment forms. Secondary data from the Seven School project was used which collected its data from seven middle-sized schools in Sweden. Besides descriptive and correlation analyses, a series of hierarchical regression models were used. The results show that boys in general scored higher than girls on both psychopathic traits and peer harassment. Also, impulsivity predicted peer harassment and so did gender in all outcome steps except for step 1 and 2 for personal harassment. However, gender didn’t moderate the effect between psychopathic traits and peer harassment except for sexual harassment and impulsivity. The conclusion of the study is that impulsivity is a major concern in peer harassment whilst grandiosity and callous-unemotional does not seem to be of major concern. Also, the moderating role of gender only had an effect on impulsivity and sexual harassment in males.Syftet med studien var att undersöka om kön modererade kopplingen mellan psykopatiska drag och trakasserier bland jämnåriga. Samt även att undersöka de olika psykopatiska dragen separat tillsammans med de olika trakasserierna. Sekundärdata från ”Sju skolor” projektet användes som hämtade in sin data från sju medelstora skolor i Sverige. Utöver descriptive- och korrelationsanalyser, utfördes även en serie av hierarkiska regressionsmodeller. Resultatet visar på att pojkar generellt får högre resultat på psykopatiska drag och trakasserier än flickor. Impulsivitet förutsäger trakasserier bland jämnåriga och det gjorde även kön i alla resultatsteg förutom steg 1 och 2 för personliga trakasserier. Däremot så modererar kön inte effekten mellan psykopatiska drag och trakasserier förutom sexuella trakasserier och impulsivitet. Slutsatsen av studien är den att impulsivitet är ett stort problem för trakasserier bland jämnåriga medan grandiositet och känslokallhet inte verkar vara ett större problem. Den modererande koppling mellan könen hade bara en effekt på impulsivitet och sexuella trakasserier bland män.
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Murat, Nermin Tulay. "Invisible diversity : exploring the experiences of trainee clinical psychologists from a mixed white ethnic background." Thesis, University of Hertfordshire, 2012. http://hdl.handle.net/2299/7623.
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There is limited research examining the identities and experiences of those from mixed ethnic backgrounds and the research literature is almost non-existent for those who are from a mixed white ethnic (MWE) background. The existent evidence base in regards to the experiences of clinical psychology training of those from minority ethnic groups is focused on Black and ethnic minority (BME) backgrounds. This study therefore aimed to gain insight into the experiences of trainee clinical psychologists from a mixed white ethnic background, raising awareness of these individuals and their needs in the clinical psychology training arena. This study adopted a qualitative approach where eight participants were recruited and in-depth semi-structured interviews conducted. Interviews were analysed using interpretative phenomenological analysis. Three main themes emerged from participants’ accounts: ‘the double edged sword of invisible difference’, ‘uncovering the undercurrents of difference’ and ‘that which is sought and gained’. These findings are discussed in relation to the existing literature and clinical implications are presented. Methodological considerations and areas for future research are also considered. This study makes contribution to a sparsely researched area and provides rich insight into the experiences of trainee clinical psychologists from a MWE backgrounds. It is hoped the material presented here will encourage further thought, debate and study of this area.
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Suescun, Pozas María del Carmen. "Lygia Clark and the European tradition, tracing the appearance of a different space." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape16/PQDD_0004/MQ29571.pdf.
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Suescun, Pozas María del Carmen. "Lygia Clark and the European tradition : tracing the appearance of a different space." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=26761.
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For almost 35 years the work carried out by the Brazilian artist Lygia Clark between the 1950s and until her death, in 1988, has attracted the attention of both Brazilian and European scholars and critics. Since special attention has only been given to her post-1969 work, the work carried out until 1969 has been overlooked. In particular, I would argue that through the incorporation of the human body Clark's 1959-1964 Bicho series is the first spatial performative strategy developed by Clark during the 1960s and against which all her subsequent production needs to be read.The present essay is thus an attempt to read as spatial performative strategies Clark's Bicho series with and against the Brazilian reception of Mondrian, reception which, as I would argue has been overlooked in the context of her work. Furthermore, I would argue that in order for us to better understand how the Bicho series unfold as spatial performative strategies the Brazilian reception of Mondrian must be approached through the Brazilian reception of Merleau-Ponty's phenomenology and political and cultural movements of the time. While the role played by Merleau-Ponty's incorporation of the human body in Clark's work has not been closely examined, Clark's engagement with the political and cultural movements of her time has been underestimated. I would argue that any attempt to give an account of Clark's practice needs to take into consideration the role these three aspects played in her engagement with the problem of representation.
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Zagadou, Franck. "Numerical analysis of acoustic scattering by a thin circular disk, with application to train-tunnel interaction noise." Thesis, Boston University, 2002. https://hdl.handle.net/2144/42324.
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The sound generated by high speed trains can be exacerbated by the presence of trackside
structures. Tunnels are the principal structures that have a strong influence on the
noise produced by trains. A train entering a tunnel causes air to flow in and out of the
tunnel portal, forming a monopole source of low frequency sound ["infrasound"] whose
wavelength is large compared to the tunnel diameter. For the compact case, when the
tunnel diameter is small, incompressible flow theory can be used to compute the Green's
function that determines the monopole sound. However, when the infrasound is "shielded"
from the far field by a large "flange" at the tunnel portal, the problem of calculating the
sound produced in the far field is more complex. In this case, the monopole contribution
can be calculated in a first approximation in terms of a modified Compact Green's function,
whose properties are determined by the value at the center of a. disk (modelling the flange)
of a diffracted potential produced by a thin circular disk. In this thesis this potential is
calculated numerically. The scattering of sound by a thin circular disk is investigated using
the Finite Difference Method applied to the three dimensional Helmholtz equation subject
to appropriate boundary conditions on the disk. The solution is also used to examine the
unsteady force acting on the disk.
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Galmés, Galmés Jeroni. "Ecophysiological traits and their responses to drought in species from the Balearic Islands with different growth forms." Doctoral thesis, Universitat de les Illes Balears, 2006. http://hdl.handle.net/10803/9369.
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Amb l'objectiu d'analitzar com la biodiversitat i l'adaptació al clima mediterrani es tradueixen en una diversitat de trets ecofisiològics i la seva resposta a la sequera, i d'estudiar si aquesta diversitat està relacionada amb formes de creixement i amb la història evolutiva de les espècies, es van seleccionar 24 espècies mediterrànies de les Illes Balears. Es va analitzar la capacitat germinativa, els efectes de la sequera en el creixement de plàntules, respostes ecofisiològiques a la sequera a nivell foliar i l'adaptació de l'especificitat de la Rubisco. Es va observar una elevada variabilitat entre espècies, la meitat de la qual associada a les diferents formes de creixement. No s'observà cap diferenciació entre les espècies endèmiques i les no endèmiques. Aquesta elevada diversitat en els trets ecofisiològics i la seva resposta a la sequera suposa un recurs potencial per identificar caràcters adaptatius i un banc genètic per millorar la productivitat de cultius.Con el objetivo de analizar como la biodiversidad y la adaptación al clima mediterráneo se traducen en una diversidad de caracteres ecofisiológicos y su respuesta a la sequía, y de estudiar si esta diversidad está relacionada con formas de crecimiento y con la historia evolutiva de las especies, se seleccionaron 24 especies mediterráneas de las Islas Baleares. Se analizaron la capacidad germinativa, los efectos de la sequía sobre el crecimiento de las plántulas, las respuestas ecofisiológicas a la sequía a nivel foliar y la adaptación de la especificidad de la Rubisco. Se observó una elevada variabilidad entre especies, la mitad de la cual asociada a las diferentes formas de crecimiento. No se encontraron diferencias entre las especies endémicas y las no endémicas. Esta elevada biodiversidad en respuesta a la sequía supone un recurso potencial para identificar caracteres adaptativos y un banco genético para la mejora de la productividad de cultivos.
The objectives of this work were to analyze how biodiversity and adaptation to Mediterranean climate is reflected in a diversity of ecophysiological traits and their responses to drought, and to study whether such diversity was related to growth forms and endemicity. The analysis covered the germination capacity, the effects of drought on seedling growth, the leaf ecophysiological responses to drought, and the adaptation of Rubisco specificity, in 24 Mediterranean species from the Balearic Islands. A wide range of variation has been observed among the species, with about half of this variability associated to different growth forms. However, no differentiation was found between endemic and non-endemic species of the Balearic Islands. The high diversity in the ecophysiological traits and their responses to drought found among Mediterranean species must be considered as a 'resource' to identify target adaptive traits for breeding plans, but also as a genetic bank to improve crop productivity.
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Li, Jia Jian. "Are Algos Ruining Everything for Us? The Predictive Relationship between Informed Trading and Security Returns under Different Market Conditions." Scholarship @ Claremont, 2019. https://scholarship.claremont.edu/cmc_theses/2257.
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High Frequency Trading (HFTs) have dramatically changed the way markets operate through supplanting traditional market makers. Numerous studies and pundits have postulated a link between HFTs and market sell-off severity. Developed by Easley and O’Hara, the Volume Synchronized Probability of Informed Trading (VPIN) is a metric that uses volume imbalances to determine the probability of informed trading. This study finds that a time-based variation of VPIN can be useful in predicting market sell-offs as it has a positive relationship with forward semivariance and a negative relationship with forward returns under different market conditions.
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Martinez, Marin Joao Carlos [Verfasser]. "Different polymorphisms of the oxytocinergic system explain the prevalence of autistic traits in different populations and the influence of oxytocin on the HPA / Joao Carlos Martinez Marin." Gießen : Universitätsbibliothek, 2018. http://d-nb.info/1154385698/34.
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Fitzgerald, Des. "Tracing autism : ambiguity and difference in a neuroscientific research practice." Thesis, London School of Economics and Political Science (University of London), 2012. http://etheses.lse.ac.uk/574/.
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Tracing Autism is about neuroscientists’ on-going search for a brain-based biomarker for autism. While much recent sociological work has looked at the ‘cerebralization’ of such diverse diagnostic categories as depression, bipolar disorder, psychopathy, addiction, and even autism itself, surprisingly little light has yet been shed on the mundane ways that researchers in the new brain sciences actually think about, reason through, and hold together neurological accounts of complex and emerging diagnostic entities. Situating itself within a series of interviews with neuroscientists who work on the autism spectrum, one of the most enigmatic, recalcitrant and unresolved categories of contemporary neuroscience, Tracing Autism is an attempt to fill this gap. The key argument is that while this work might be seen as a process of gradual ‘neurobiologization’ or neuromedicalization,’ talking to autism neuroscientists reveals a practice much more complex, much more ambiguous, much less monolithic, and also much less certain, than the sociological literature yet fully realizes. The thesis shows how autism neuroscience works by tracing its way across some very different and ambiguous commitments – carefully negotiating the space between the biological and diagnostic definitions of autism, the hope and disappointment of neuroimaging technology, as well as the intellectual and visceral commitments of laboratory research. Locating itself within a recent turn to theorising the entanglement of cultural and biological phenomena within scientific spaces (Barad, 2007), and joining with a growing literature that wants to take neuroscience seriously (Wilson, 2004), Tracing Autism shows how the complex work of autism neuroscience picks its way across social deficits, neurobiological substrates, psychological theories, disappointing machines, and loving scientists. Tracing Autism is the story of an intellectual and affective complexity that has come to define autism neuroscience; but it is also the story of the care, seriousness and novelty with which neuroscientists talk about their work.
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Bowers, Lindsay Jeanine. "Cooked yields, cooked color, tenderness, and sensory traits of beef roasts differing in connective tissue content cooked in an oven with steam generation versus a commercial convection oven to different endpoint temperatures." Thesis, Kansas State University, 2011. http://hdl.handle.net/2097/9211.
Full textAbstract:
Master of ScienceDepartment of Animal Sciences and Industry
Michael E. Dikeman
The CVap steam generation oven was compared to a Blodgett forced-air, convection oven to examine effects of cooking method on yields, cooked color, tenderness, and sensory traits of beef Longissimus lumborum (LL), Deep pectoralis (DP), and Biceps femoris (BF) muscles cooked to three endpoint temperatures (65.6, 71.1, and 76.7°C). For each cooking treatment, four roasts were cooked in the CVap oven for a pre-determined, average amount of time, and two roasts were cooked in the Blodgett oven until they reached desired internal endpoint temperature. Cooking yields were higher (P ≤ 0.05) for BF and LL roasts cooked in the CVap. Slice shear force (SSF) for BF roasts cooked in the CVap were lower (P ≤ 0.05), whereas, SSF values for DP roasts cooked in the Blodgett were lower (P ≤ 0.05). No oven difference (P > 0.05) was found for LL roasts. Sensory tenderness scores for BF roasts cooked in the CVap were slightly higher (P ≤ 0.05) than roasts cooked in the Blodgett. Sensory scores for LL roasts cooked in the CVap were slightly higher but were also drier (both P ≤ 0.05). The CVap oven offers tenderization and cooking yield advantages for certain muscles.
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Ghebrehiwet, Mikael. "Contracts for Difference : A measure of risk management and strategic awareness." Thesis, Stockholms universitet, Företagsekonomiska institutionen, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-63560.
Full textAbstract:
The introduction of contracts for difference, CFDs, in the Nordic market has meant a tremendous freedom for both large investors and small investors. CFDs, like many other financial derivatives, allow speculation on price movements in virtually all global markets with easy access to leverage, which is the same as borrowed capital. CFDs carry high risk and hence should only be used by qualified traders. Swedish CFD providers have been criticized for mass marketing their services with lack of regard for the industry's sustainability. The legal requirements placed on CFD providers for customer's creditworthiness and knowledge are also said to be weak, given the products complexity and high risk. Thus, the purpose with this research is to respond to the criticism by examining the level of risk management, and the level of strategic awareness among CFD traders. The epistemological orientation of this research conforms to the philosophy of positivism, and the research approach is consistent with the deductive approach. The research is based on a quantitative data collection method were a survey was carried out with CMC Markets’ customers with 233 respondents.After examining the usage of risk management tools, position sizing and monitoring; the results suggest that the level of risk management among CFD traders is moderately high. For a trading strategy to function, and hence be successful, it is important that traders are consistent with the various components that a trading strategy consists of. After examining to what extent the CFD traders positions are based on rules and signals as well as loyalty to them, to what extent they optimize their trading strategy, and lastly to what extent they use available strategy methods I came to the conclusion that there is a relatively low level of strategic awareness.Keywords: CMC Markets, Finance, CFDs, Investment, Derivative, Securities Trading, CFD Trading, Stocks, Risk management, Strategic awareness, Trading strategy, Technical analysis, Fundamental analysis
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Hsieh, Pei-San, and 謝佩珊. "The Action Research in How Soccer Coach Trains Different Goal-oriented players." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/25184104486252119797.
Full textAbstract:
碩士國立東華大學
體育與運動科學系
100
The purpose of this research is to understand how soccer coach trains different goal-oriented sportsmen. The way I carried my research out is action research with reflective journal of researcher, feedbacks from players, interviews, critical feedbacks and researchers themselves as my research tools. When seeing the problems or the difficulties soccer coach run into while training and leading the players in the field, researchers can modify the original leading strategy the coach planed right away after hearing the critical feedback and suggestions from players. While carrying on the action strategy, we will invite the critical friends to the field, observe and record the interaction between researcher and players during the practice and finally give their feedbacks and evaluations to researchers. The findings of this study are as following: 1.By different leadership strategies and training contents, players are able to sense the efforts coach has put into. They will modify themselves to adopt coach’s leadership style and improve themselves. 2.While doing the study, the researchers are on the scene, use a magnifying glass to look at many things and find many details we never paid attention before. So, we enable to analyze the problem from every angle and come out a better solution to solve it now. 3.Analyzing the individual differences, environmental factors and personal growth background of players to find out which dimensions they are in two dimensions of goal orientations. Then, offer them training strategies based on the goal orientation they belong. Work-oriented players tend to be more social comparison. When encountered the failure, they will chicken out. On the contrary, self-oriented players tend to be more self-comparison. When encountered the failure, they will try their best to improve themselves.
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Pan, Sin-you, and 潘信佑. "Pairs Trading: Profitability of Different Strategies." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/vzk9n9.
Full textAbstract:
碩士國立中山大學
財務管理學系研究所
102
The original research was conducted by Gatev, Goetzmann, and Rouwenhorst (1999) in which they used a very simple pairs trading rule to make a profit. After 15 years I test this strategy and extend this model in the Taiwan market. In this study I perform a “pairs trading” strategy based on a comparative mean reversion of asset prices with daily data over the period January 2002 to December 2013 in the Taiwan Stock Exchange (TWSE). Our strategy depends on Gatev, Goetzmann, and Rouwenhorst (2006) and extends to several different strategies. There are two major parts in my research; first I set different thresholds in the trading periods and I observe that stop loss conditions can efficiently increase probability of earning a profit. Second, I focus more effort on how to select better pairs in the formation period, and subsequently examine a two-step method to select pairs. Finally, the results indicate that pairs produced a p.a. rate of return of 2.39% and standard deviation of 0.1770 for the period from January 2010 to December 2013.
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Lee, Chun-Ta, and 李俊達. "Different Investors'' Trading under Different Market Conditions and Moneyness." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/79740596374751048943.
Full textAbstract:
碩士淡江大學
財務金融學系碩士班
100
This thesis examines investors of options across exercise prices under different market conditions and moneyness, and documents regularities related to trading patterns of domestic institution investors, foreign institution investors, individual invsetors and market maker. Our sampling period covers from March 24, 2008 through March 31, 2009, and consists a period of political tension; a bear market and a bull market. This thesis uses a 15-min trading interval stock returns and call-put options trading value ratio to measure the information flow between Taiwan stock index returns and TXO options trading activities based on VAR model. This empirical result reports that traders are likely to trade OTM option because of liquidity and leverage effect in TXO options. When without considering investors, market conditions and moneyness, the empirical results find that the stock leads the options markets. However, as considering investors, market conditions and moneyness, the results find that options market lead stock as domestic institution investors trade in OTM of entire period, OTM of bear market, OTM of bull market and foreign institution investors trade in bear markets. Therefore, institution investors are likely to obtain informative information under different market conditions and moneyness.
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Chen, Chuan-Yi, and 鄭全益. "Trading Behavior Analysis for Different Types Traders." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/57211766660729961132.
Full textAbstract:
碩士國立高雄應用科技大學
金融資訊研究所
96
In the stock market there are different types of natural traders, who can be differentiated by gender, age and transaction type, etc. This article aims at researching the transaction characteristics of different type investors by statistical analyzing of the transaction accounts. Based on the viewpoint of behavioral finance, the natural traders are easy to make non-rational investment deicsion such as disposition effect and familiarity effect, etc. This article also research whether the assumption of behavioral finance exists in natural traders by statistical analyzing of the transaction accounts. The research result shows that when the investors are classified by traditional transaction type and electronic transaction type, the distribution of gender and age are certain to be different. Both male and female of traditional transaction type and male of electronic transaction type more cocksure than female of electronic transaction type. In most cases the investors’ investment characteristics do not have relationship with their constellation. Regarding the age, the vigorous young people are not always the group with highest turnover rate. The group that average loss and profit distributed is also differentiated by different classification. Regarding the classification, in whatever situation, tradition transaction investors with the credit letter open is assertive than those without the credit letter open. Electronic transaction investors could not be assertive than those tradition transaction investors.
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Scott, STEPHANIE. "Characterizing the leaf size / number trade-off at different scales." Thesis, 2009. http://hdl.handle.net/1974/5298.
Full textAbstract:
A novel interpretation of leaf mass variation in plants has been recently proposed based on its relationship with variation in leafing intensity – number of leaves produced per unit remaining above-ground dry mass. It is now widely established that between species
variation in these two traits is strongly, negatively (and isometrically) correlated
for woody and herbaceous species. Possible fitness advantages of higher leafing intensity (requiring smaller leaf size) can be interpreted in terms of the greater concentration of axillary meristems (larger ‘bud bank’), which may provide greater potential deployment flexibility for growth or reproduction. However, no research to date has addressed how these two traits are related at different scales, specifically at the between-individual (within-species) level, or between sexes in dioecious species. For the majority of 24 herbaceous angiosperms studied here, between-individual (within species) co-variation in leaf size and leafing intensity displayed as an isometric trade-off. For the few species with allometric trade-offs, plants with smaller body size produced disproportionately
more leaves, indicating a possible mechanism for promoting reproductive economy when
plant size is suppressed (e.g. by competition). For two out of three woody dioecious species, and two out of three herbaceous dioecious species, males tended to produce more, smaller leaves than females, possibly promoting pollen dispersal through a more broadly-spaced floral display (developing from more numerous axillary meristems). In contrast, the larger (but fewer) leaves in females may serve to maximize local photosynthetic resources available for axillary fruit and seed maturation. Males and females did not differ in branching rates associated with differences in leafing intensities, but in one herbaceous species, higher leafing intensity in males was associated with higher flower production than in females. In the larger 24-species data set, there was no
evidence that species with higher leafing intensity (providing more axillary meristems)
was associated with either a greater magnitude or a greater flexibility in branching or flowering intensity. Additional studies are required to explore the possibility that large ‘bud banks’ of axillary meristems (conferred by high leafing intensity) may promote effective mechanisms for tolerating environmental variability, responding to damage (e.g. from herbivory), and/or maximizing reproductive economy.Thesis (Master, Biology) -- Queen's University, 2009-10-27 21:20:03.509
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殷秀菁. "A Study on Perception and Behavior of Tourists at Different Trails." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/91218279287678900493.
Full textAbstract:
碩士國立彰化師範大學
地理學系
97
A Study on Perception and Behavior of Tourists at Different Trails Abstract Trails not only are paths, but also lead tourists to go far away civilization or come back. The Forestry Bureau designs the“national and regional”trail systems. The purpose of this study is to research tourist perception and spacial behavior at different trails in order to provide suggestions for the future development. The study areas are Yuanzai and Chingshuiyen trails . The number of valid questionnaires is 441. The study is summarized as follows : The Chingshuiyen trail tourists are mostly over forty-five and spend less than thirty minutes in traffic time. Many tourists come with their family to enjoy hiking for about one or two hours. Most of the Yuanzai trail tourists are male, or unmaried and their age are between twenty-five and fifty-four. Many tourists come with their family and friends, and their numbers are usually over five people. At different trails, most of the tourists come for purposes to exercise and relax. Most of them come by car. Many tourists are satisfied with hiking, because that will improve the relationship of their family and friends. However, it`s inconvenient for tourists for the lack of toilets. The ANOVA analysis shows that the tourist identification and behavior will obviously influence their satisfaction with trails. For example, the tourists who are elder and married will be more sensitive. People who read more natural magazines and have more experiences at trails will be more satisfied with physical setting. Those who have higher educational backgroud will be less satisfied with managerial setting. In behavior, younger and larger groups should improve their ecological knowledge. Keywords：trail、perception、spatial behavior、leave no trace
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Dupasquier, Chantal Marie Christine. "The effects of consuming fatty acids from different sources on atherosclerotic development." 2009. http://hdl.handle.net/1993/3185.
Full textAbstract:
It is becoming increasingly evident that the development of atherosclerotic coronary heart disease (CHD) can largely be regulated by lifestyle and dietary choices. The type of fatty acids regularly consumed may promote or prevent atherogenesis. Flaxseed, the richest plant source of the omega-3 fatty acid alpha-linolenic acid (ALA) is thought to protect against atherosclerotic disease. However, the mechanism(s) by which flaxseed exerts these anti-atherogenic effects requires further investigation. Alternatively, there are dietary fatty acids that are thought to induce significant deleterious effects upon our cardiovascular health. Epidemiological evidence associates dietary trans fatty acids (TFAs) with atherosclerotic CHD. This evidence has largely focused on the main source of TFAs in the North American diet, industrially hydrogenated vegetable shortening (iTFAs). It is assumed that TFAs stimulate atherosclerosis but the only studies to date have shown no effect of TFAs on atherosclerosis. Even less is known of the impact of naturally occurring TFAs from dairy and meat products of ruminant animals (rTFAs) on atherosclerotic disease.
We investigated the effects of flaxseed supplementation on atherosclerosis and vascular function in two animal models, the hypercholesterolemic rabbit and the cholesterol fed, low density lipoprotein receptor (LDLr-/-) deficient mouse. New Zealand White rabbits and LDLr-/- mice were fed a diet containing flaxseed in the absence or presence of dietary cholesterol for a period of 6 to 24 weeks. We found that dietary flaxseed inhibits the atherogenic effects of a high cholesterol diet in both animal models. The anti-atherogenic effect was achieved in the mouse model through a capacity to lower circulating cholesterol levels and at a cellular level by inhibiting cell proliferation and inflammation. This reduction is also associated with an improved vascular relaxation response as demonstrated in the rabbit model.
We also investigated the effects of consuming TFAs from two sources, industrially hydrogenated iTFAs rich in elaidic TFA (C18:1t-9) or naturally-occurring ruminant rTFAs rich in vaccenic TFA (C18:1t-11), on atherosclerotic development in the LDLr-/- mouse in the presence or absence of elevated dietary cholesterol. Our results demonstrate that consuming iTFAs dose dependently initiates atherosclerotic development but not beyond the effects of dietary cholesterol alone. However, consuming rTFAs rich in vaccenic acid protects against hyperlipidemia and atherosclerosis in the presence or absence of dietary cholesterol.
The effects of combining dietary flaxseed and iTFAs in the diet were also examined in this model. Adding whole ground flaxseed or flaxseed oil (ALA) to diets containing low and high doses of iTFAs completely prevented atherosclerotic development in the absence of dietary cholesterol. Flaxseed was also able to partially prevent atherosclerosis caused by iTFAs and cholesterol. Our results suggest that the omega-3 ALA fatty acid rich content of flaxseed is mainly responsible for the anti-atherogenic effects of flaxseed. Our results highlight potential mechanisms for the beneficial effects of dietary flaxseed and the mixed effects of TFAs on cardiovascular health and underscore the need for further basic and clinical investigations.
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Yi-ChiehLu and 呂宜潔. "Study on Kuroshio Current Affected by Different Typhoon Tracks." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/59009220089033811431.
Full textAbstract:
碩士國立成功大學
水利及海洋工程學系
102
TOROS (Taiwan Ocean Radar Observing System) High Frequency Radar (HRF) system data sets measured by the Taiwan Ocean Research Institute (TORI) and model simulations calculated by POM (Princeton Ocean Model) both are implemented to analyse Kuroshio current variation affected by different typhoon tracks. Three typhoon tracks, i.e. SOULIK, USAGI and KONG-RET, were investigated. Changed of current field during typhoon events were discussed. To accurately capture key features of Kuroshio current, we first adjust the first- order setting for effectively grasp surface currents which are resolved from radar echo signals during typhoon events. The moving average method is also used to remove ionospheric disturbance of TOROS raw data and obtain reasonable results in terms of changes of flow field during typhoon attack to Taiwan Island. The results of the analysis are summarized as follows. When typhoons come from southeast and northeast of the onset of study area (the margin of east continental self), which could cause southern wind field resulting in decrease of the Kuroshio current speed. On the contrary, when typhoons locate in the southeast and northeast of the study area, which could produce northern wind field leading to increase of the Kuroshio current speed. It is concluded that the Kuroshio current field depends on the typhoon wind field on the onset at the study area. It could enhance the Kuroshio current speed in the following direction, but reduce the speed in the opposite direction. Numerical results obtained by POM show the same trend of changes for different typhoon tracks. The current of typhoons at different weaker depth was also studies. No significant change of Kuroshio current field at 100m water depth is found during SOULIK typhoon attack.
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Syue, Ming-Jheng, and 薛明政. "Using Music Interventions to Assess Relaxation Training in People with Different Emotional Traits." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/rpav2b.
Full textAbstract:
碩士元智大學
資訊管理學系
104
The purpose of this research is to investigate shot-term impact of mood meditation in music therapy. This research was targeted at the college students. The total sample number of this research is thirteen. Students fill in Fence’s Stress scale before listening music. The emotional state greater or equal to5 point is group A, less 5 point is group B. Using single-channel EEG recorder of NeuroSky to measure meditation whose value is between 0 and 100. Poincare plot was adopted to analyze two sets of attention and meditation, the short-term variety (SD1)、long-term variety(SD2) and mean(M). With Independent-Sample T Test, the SD1 showed significant differences between A group and B group. The results of this research provide quantitative evidence to support the man who is psychological traits of high emotional states is more suitable for music therapy to improve stress.
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Lee, Chao-Yi, and 李昭毅. "An analysis of advertising effect on different type of advertisements by personality traits." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/03133411363441334682.
Full textAbstract:
碩士中華大學
資訊管理學系(所)
97
Companies like send messages to consumers via mobile device. However, few consumers need to receive that. And thus, how to define the objective consumers should be an important issue. The purpose of this study is to explore the different personality traits the users receive the mobile advertisement and impact the advertisement effect on the ad formats. This experiment’s Participants have using cell-phone. The experimental contain a variety of mobile ads presentation. There are including text messaging, text messaging with different transparency of watermark, text messaging with different types of music and the text messaging combine with music and watermark. In the experimental result, the effective of questionnaires rate is 90.8%. The participants age between 21 to 24 have 70.0%. And the users receive the ad message 1 to 3 in a day have 80.6%. The researcher analyzes the data by ANOVA. The result shows that the different personal traits groups have significant difference to the different type of mobile advertisements.
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Sousa, Paulo Miguel Pinheiro de. "Genetic diversity and structure of wild bee species with different life-history traits." Master's thesis, 2021. http://hdl.handle.net/10451/49341.
Full textAbstract:
Tese mestrado, Biologia Evolutiva e do Desenvolvimento, Universidade de Lisboa, Faculdade de Ciências, 2021Historical demography and life-history traits are known to both influence the genetic structure and genetic diversity of species. In the Iberian Peninsula, genetic structure and diversity are known to be influenced by the last glaciations and by the peninsula’s spatial heterogeneity. Wild bees (Hymenoptera:Apoidea: Anthophila) present several different life-history traits which are known to influence the geneticdiversity and genetic structure of their species, such as body size, reproductive strategy, and dietspan. Wild bees act as pollinators of both wild plants and crops, and recent studies have shown their cur -rent decline. Here, we use RAD sequencing in three wild bee species Andrena flavipes, A. agilissima,and Lasioglossum malachurum to access their genetic structure and their genetic diversity. Also, we analyzethe genomic variation across the landscape for A. flavipes, using two recent approaches (GradientForest e Generalised Dissimilarity Modelling). We found that all three species present genetic structure,however A. flavipes has a very high differentiation level between its populations. One population (with53 samples) is present in the large majority of the peninsula. Genetic diversity is higher for A. agilissima and lower for A. flavipes. The inbreeding coefficient for the two Andrena species is higher than for the L. malachurum. Both methods used for the landscape genomic analysis revealed the importance of precipitation seasonality and the percentage of forest area as important variables to explain the allele turnover across the landscape. The results here obtained can be explained by both life-history traits and historical demography. However, genetic structure patterns for all species appear to be influenced with multiple putative glacial refugia in the Iberian Peninsula during the last glaciations. The landscape genomic results suggest the susceptibility of ectothermic animals to climate seasonality and the protection conferred by forests to such variations.
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Chen, Chu-Mei, and 陳祝美. "Research on Detecting Model for Fictitious Company of Different Trades." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/21684147289114721839.
Full textAbstract:
碩士元智大學
資訊管理學系
99
This research used data mining technique among a huge tax database. The SPSS Clementine 12.0 software was used on training, testing and model-building the data mining process that was looking into 15 different occupations. Yet, I built virtual companies and set up a taxation pre-warning systems for each of them. As the simulation ran, I could find out the best pre-warning systems and their rules. According to the simulation results, computer could analytically tell me which model worked the best on efficient taxation enhancement. At the end, this research showed C5.0 model gave the best result for every occupation taxation performance. On the other end, the discriminant method gave the worst prediction result. However, among the rest of the models I tested, it carried out different accuracies respectively. And yet, if the key factors remained fixed, different models also resulted different accuracies as well. To sum up, modeling simulations on different occupations can be used for reference in real-life practices of case selection.
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HSUEH, AI-JUNG, and 薛愛蓉. "Comparison of profitability of paired trading under different distance measures." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/fb77nt.
Full textAbstract:
碩士國立臺北大學
統計學系
107
Paired trading is a market-neutral investment strategy seeking highly correlated stocks that can be profited when the price difference (spreads) of the paired stocks deviates from the historical average. Gatev et al. (2006) define the distance method used in paired transactions. The basic concept of the distance method is to calculate the MSD values between two stocks, then order the MSD values from least to greatest, and select the first five pairs as our targets. This paper considers forty-three stocks in FTSE TWSE Taiwan 50 Index dated from January 1, 2013 to December 31, 2016 excluding some stocks with too much missing data as our sample. Different way to normalize stock prices and different distance measures are applied to select the best paired stocks as the investment portfolio. One-to-one paired trading strategy is conducted to the selected pairs form various methods and the corresponding returns are compared.
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Wu, Chun-Yun, and 巫淳筠. "Effects of different dietary methionine to lysine ratio on growth performance, blood parameters, digestive traits and carcass traits of goat kids." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/2zwa2b.
Full textAbstract:
碩士國立嘉義大學
動物科學系研究所
106
Feeding high-protein diets with unbalance amino acids in animals can lead to a decrease of nitrogen utilization efficiency, and then promote the environmental pollution. Lowering the dietary protein level and modifying amino acids (AAs) balance can reduce the emission of nitrogen, which is largely responsible for the environmental issues. Meanwhile, a number of studies have shown that several dysfunctions such as intestinal dysfunction in weaning mammals can be induced by high protein diets. Nevertheless, lowering the dietary protein level might lead to the deficiency of some crucial EAAs that cannot be synthesized in vivo. Recently, more reports have demonstrated that lowering protein level in diets supplemented with specific amino acids can address these problems. Replacing a portion of the dietary crude protein content by supplementing synthetic AA is an useful approach to improve feed efficiency, reduce feed cost and also to obtain environmental benefits. For growing goats fed a corn grain and soybean meal diet, methionine (Met) was likely the first limiting amino acid, followed by lysine (Lys). So we use Met to Lys ratio as an indicator of AA balance. However, there were few studies related to AA balance in goat kids starter. Therefore, the aim of this study was to estimate the effect of Met to Lys ratio under low protein level (17%) starter on goat kids growth, blood, digestive and carcass traits. Treatment assigned 30 four-week-old (L block) and 15 six-week-old (H block) goat kids into three different Met to Lys ratio starter groups, as A (0.29), B (0.31), and C (0.33). In two-month trial, treatment collected growth performance and blood parameters every two weeks, and collected 5 goat kids’ digestive traits per group in L block in the 0-14 days of the treatment. Then slaughtered 3 goat kids per group from H block and measured their carcass traits after the treatment finished. The results showed that in L block goat kids, there were no significant differences among different Met to Lys ratios, each blood parameter was in normal range without existing significant differences, only the concentration of albumin in the 6th and 8th week were lower in B group (P<0.05), with a quadratic effect (P<0.05). Otherwise, in H block goat kids, C group had a tendency of final weight, higher body weight gain and feed intake (P<0.1), but there was no significant difference in feed conversion ratio among three groups; in addition, all blood parameters were in normal ranges and didn’t have significant differences, only the concentration of γ-GT was lowest in B group. There were no significant difference between three groups’ dry matter and crude protein intake and their apparent digestibility. Then mentioned to carcass traits, C group had significantly highest carcass weight and heart weight (P<0.05), with a quadratic effect (P<0.05), while its hair weight and lung weight also tend to be heavier (P<0.1). There were no significant differences in the remaining carcass traits among the groups. In conclusion, goat kids relied on the nutrition of milk replacer rather than starter before weaning, however, providing Met to Lys ratio 0.33 starter could increase growth and carcass performance in H block goat kids, but had no significant differences on blood parameters. Hence, adjusting amino acid ratio from 0.29 to 0.33 under 17% CP starter had no significant effect on growth, blood, digestive and carcass traits, and it could not only decrease feed cost, have benefits to environment, but also increase feeding efficiency.
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CHEN, LU-HUAN, and 陳律圜. "The effect of personal psychological traits on schadenfreude and attribution in different tragedy events." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/7h83j4.
Full textAbstract:
碩士國立中正大學
犯罪防治研究所
104
This paper aimed to explore the effect of personal psychological traits (social comparison orientation, religious retribution, internal-external locus of control) on schadenfreude and attributions when observing other people were responsible for different tragedy events in various degrees. There were two parts of research in this paper.Research 1 investigated the demographic variables which affected personal psychological traits. Through observing different tragedies, research 2 discussed the effect of demographic variables and personal psychological traits on schadenfreude and attributions. The research tool was a modified questionnaire which composed of five sub-scales , including ”Personal profile”, ”Social comparison orientation scale”, ”Religious retribution scale”, ”Internal-external locus of control scale” and ”Reaction of emotion & Patterns of attribution scale”. A total of 453 valid questionnaires were recovered. After exploratory and confirmatory factor analysis, the construct validity of each factor extracted from the sub-scales was confirmed. Through statistical analysis, the study results put social comparison theory, Levinson’s development theory （Seasons of life）, attribution theory and the belief of just world into discussion. It was pointed out that demographic variables had significant influences in personal psychological traits. Similarly, variations in demographic variables and personal psychological traits affected degree of schadenfreude and patterns of attribution in different events. Finally, based on the theories, the paper proposed recommendations for follow-up studies and practice.
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Liao, Su-Ya, and 廖思雅. "Leaf traits and growth of the Taiwan palm Phoenix hanceana Naudin in different habitats." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/34970307295297137877.
Full textAbstract:
碩士國立中興大學
生命科學系所
102
Taiwan date palm, Phoenix hanceana Naudin (Arecaceae) is a native palm widely distributed in lowland Taiwan. Compared to most palm trees growing in tropical regions, P. hanceana found in subtropical habitats is a chilling tolerant indicator plant of its family. This species can serve as a valuable indicator to study the effects of global warming and changing environments and to provide a better understanding of how these changes affect the future populations of species in Arecacae and their growth strategies. In this study, P. hanceana from seven selected study sites in Taiwan (including western and eastern coastal areas and an outlying island), and cultivated individuals with different treatments, were used to monitor. The aim was to explore the association between growth strategy and leaf functional traits of P. hanceana and compare sapling growth responses. In addition, the tree age modeling and age estimation of local populations of P. hanceana were first reported. Results showed that the plants growing in eastern Taiwan (Nantian, Guanshan and Baxiandong) had slower leaf growth rates. Among these sites, the plants growing in Baxiandong with relative shaded environments and those in the 21st- 25th plots of Guanshan had higher values of mature leaf length, leaf petiole length, leaf life span, leaf area and specific leaf area (SLA), but smaller leaflet frequency. The plants growing at Tongxiao, Dadu, Ludao (island) and Dulan had higher leaf growth rates. The two western sites (Dadu and Tongxiao) had experienced long term disturbance from human activity and fire, and gave the highest leaf dry matter content and low specific leaf area. Stepwise regression predicted that annual mean temperature, cumulative days of temperature < 12℃ per year, annual max temperature and min temperature were the main factors significantly related to leaf traits. A similar result was found from Canonical Correspondence Analysis (CCA). The seven study sites can be classified as coming from three geographic regions: eastern coastal, Guanshan, and western coastal regions. Among the classified ranks of the plant trunk height, there were no significant differences between leaf traits and trunk heights in western coastal and in Guanshan regions, but the leaf growth rate and leaf area increased with trunk height of the plants growing in eastern coastal region and the 14-16th plots of Guanshan. No matter leaf growth rate or green leaf number of any nursery saplings increase as trunk height increases. Those plants cultivated in eastern Taiwan treated with [sunny + moist] had a higher growth rate and green leaf number; while the plants treated with [sunny + water logging] had the shorter leaf life span than the others. The seasonal growth surveys during 2011 to 2013 showed that the highest leaf growth rate appeared in the summer of 2012, while the slowest one was in the winter of 2012. In summer and in fall of 2012, leaf growth rate was faster than those of the previous year. This study revealed that P. hanceana has different growth strategies in response to different environments and seasonal changes, and these responses may affect the trunk height. Moreover, temperature is the most important factor for palm growth. Light shapes the leaf. Precipitation promotes leaf growth, and the rainy days affect the leaf growth strategies: to increase the leaf number or to elongate leaf length. However, if precipitation is excessive, and the trunk bases are soaked, gas exchange rates are reduced, thus reducing leaf longevity. Based on the growth modeling of P. hanceana constructed in this study, the young tree will not form a significant trunk until the growth of the 79th leaf. It is estimated that the ages of the existing populations of P. hanceana in Taiwan are at least 94- 273 years. Estimation of the oldest trunk age allows inference of the minimum local population survival time. In summary, these results of growth strategies and plant age composition of this species provide valuable insights for a better understanding of plant adaptive plasticity and for future conservation.
50
KUO, WAN-JU, and 郭宛如. "A Study of Pupils’ Gameplay Attitudes and Behaviors under Different Time Pressures in Game-Based Learning for Children with Different Personality Traits." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/ve3sgd.
Full textAbstract:
碩士中華大學
資訊管理學系
107
In recent years, digital game-based learning has been widely used,which has promoted learning motivation, learning interest and learning effectiveness due to the prevalent informatization in campus. However, the time limit of the gameplay increases the challenges, which may affect learners’ gameplay wills or behaviors. Previous studies revealed that the personality traits of learners are the factors that impact their learning behaviors during gameplay. As a result, this research aims to discuss the differences of gameplay attitudes and behaviors for children with diverse personality traits under different time pressures in game-based learning. Quasi-experimental research is adopted in this study, and fifth-grade students of an elementary school in New Taipei City are divided into two groups: the control group and the experimental group. Scaffolding English Vocabulary Monopoly Game is conducted as an experimental game. During this gameplay, there is no time limit for the control group to answer the questions, whereas there is a time limit for the experimental group to do this. The research tools are as follows: Scaffolding English Vocabulary Monopoly Game, Personality Self -Rating Scale, Gameplay Attitude Questionnaire, and Game Record Files. After children join this experimental gameplay, collecting questionnaires and information of gameplay behaviors will be processed for conducting both analysis of variance and independent-sample t test. The research results show as below: There are significant differences in cognitive load, in perceived ease of use and in the percentage of giving Chinese hints among children with different personality traits. There are significant differences in gameplay attitudes among children with extraversion,with agreeableness,with conscientiousness and with openness under different time pressures. There are significant differences in gameplay behaviors among children with extraversion,with neuroticism,with agreeableness,with openness and with conscientiousness under different time pressures. Personality traits interplay with time pressures from the aspect of perceived ease of use. In the future, gameplay designers and instructors can take learners’ personality traits and time pressures into consideration while they are designing or using game-based learning.