Dissertations / Theses on the topic 'Mirbt'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 dissertations / theses for your research on the topic 'Mirbt.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.
Kim, Stella Yun. "Simple structure MIRT equating for multidimensional tests." Diss., University of Iowa, 2018. https://ir.uiowa.edu/etd/6158.
Full textLozado, Jersica Assis. "Adaptação e validação transcultural do Orpheus Business Personality Inventory para o contexto brasileiro." Faculdade de Filosofia e Ciências Humanas, 2017. http://repositorio.ufba.br/ri/handle/ri/23887.
Full textApproved for entry into archive by Hozana Azevedo (hazevedo@ufba.br) on 2017-08-08T13:45:53Z (GMT) No. of bitstreams: 1 Dissertation_final_version (com ficha).pdf: 1617520 bytes, checksum: 41749c8d72ffae94a71ee15d63b2239e (MD5)
Made available in DSpace on 2017-08-08T13:45:53Z (GMT). No. of bitstreams: 1 Dissertation_final_version (com ficha).pdf: 1617520 bytes, checksum: 41749c8d72ffae94a71ee15d63b2239e (MD5)
A literatura em Psicologia indica a carência de uma medida nacional que leve em consideração a personalidade do indivíduo no ambiente de trabalho. Considerando a qualidade psicométrica do teste dentro do contexto em que foi validado, o propósito deste estudo foi validar o Orpheus Business Personality Inventory (OBPI) para a população brasileira. Este teste foi desenvolvido especialmente para o ambiente organizacional e pode ser usado sob diversos propósitos, como seleção, promoção e desenvolvimento de colaboradores. O teste é composto por 190 itens, distribuídos em 16 escalas: cinco escalas maiores, sete escalas menores e quatro escalas de checagem. As escalas maiores, baseadas no modelo Big Five de personalidade, são Companheirismo, Autoridade, Conformidade, Emoção e Detalhe. As escalas menores, por sua vez, avaliam a integridade e foram baseadas nos traços do teste Giotto, são elas: Proficiência, Orientação para o trabalho, Paciência, Imparcialidade, Lealdade, Transparência e Iniciativa. Por fim, as escalas desenvolvidas para checagem de respostas contaminadas são: Dissimulação, Ambivalência, Desânimo e Falta de atenção. A coleta de dados foi realizada através da plataforma de testagem computadorizada Concerto, desenvolvida pela Universidade de Cambridge. Participaram deste estudo 938 indivíduos para a fase de testagem e 98 para a etapa de reteste. A validação de conteúdo contou com a participação de cinco juízes. Para a validade de construto, utilizou-se a Full Information Factor Analysis sob os pressupostos da Teoria de Resposta ao Item Multidimensional. O alfa de Cronbach e o coeficiente Omega foram calculados para medir a consistência interna de todas as escalas. Também foram avaliadas medidas de misfit de acordo com o modelo Rasch. Os resultados indicaram um conjunto de itens que apresentaram cargas fatoriais baixas, mas existem evidências de validade transcultural que podem ser 13 verificadas através dos resultados da validade de conteúdo e da fidedignidade do teste. A versão brasileira do OBPI não só suprirá uma lacuna na área de Avaliação Psicológica, como também auxiliará no desenvolvimento de um instrumento que seja multicultural em sua essência. Espera-se que em mão dos resultados aqui apresentados, estudos futuros possam encontrar evidências adicionais de validade de construto.
The literature in Psychology indicates the need for a national instrument that takes into consideration individual personality inside the workplace. Given the psychometric quality of this test within its validation context, the purpose of this study was to validate the Orpheus Business Personality Inventory to the Brazilian population. This test has been developed specially to the organizational environment and can be used under several purposes, such as selection, promotion and development of employees. The test is composed of 190 items divided through 16 scales: five major scales, seven minor scales and four audit scales. The major scales, based on the Big Five personality model, are Fellowship, Authority, Conformity, Emotion and Detail. The minor scale are a measure of integrity and were based on the traits stated on the Giotto test, they are: Proficiency, Work orientation, Patience, Fair-Mindedness, Loyalty, Disclosure and Initiative. Finally, the scales created to audit invalid responses are Dissimulation, Ambivalence, Despondency and Inattention. The data was collected through Concerto platform, developed by the University of Cambridge. In this study, participated 938 individuals for the testing phase and 98 for the retest phase. For the content validity study, five experts participated. For the construct valitidy study, a Full Information Factor Analysis was performed under the Multidimensional Item Response Theory underlying assumptions. Cronbach’s alpha and the Omega coefficient were calculated to evaluate the internal consistency for all scales. Misfit measurement were also investigated, according to the Rasch Model. The results indicated that a group of items presented low factor loadings, although cross-cultural validity can be inferred from the results for the content validity and reliability of the test. The Brazilian version of OBPI will not only fill a gap in the area of Psychological Evaluation, but will also assist the 15 development of an instrument that is multicultural in its essence. It is expected that further studies will support the results presented here with additional construct validity evidences.
Yon, Haniza. "Multidimensional item response theory (MIRT) approaches to vertical scaling." Diss., Connect to online resource - MSU authorized users, 2006.
Find full textTitle from PDF t.p. (viewed on Mar. 30, 2009) Includes bibliographical references (p. 113-119). Also issued in print.
Rieu, Ruben. "Sedimentology, stratigraphy and geochemistry of the glacially influenced Neoproterozoic Mirbat Group, Oman." Zürich : ETH, 2006. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=16752.
Full textKim, Young Yee. "Effects of test linking methods on proficiency classification UIRT versus MIRT linking /." Diss., Connect to online resource - MSU authorized users, 2008.
Find full textTitle from PDF t.p. (viewed on Mar. 30, 2009) Includes bibliographical references (p.193-199). Also issued in print.
Cunningham, Catherine A. "Bark Beetle Activity in Douglas-Fir, Pseudotsuga menziesii var. glauca Mirb. (Franco), Following the 1994 Beaver Mountain Fire." DigitalCommons@USU, 1997. https://digitalcommons.usu.edu/etd/7267.
Full textAkhter, Shaheen. "The provenance variation in natural durability of Douglas fir (Pseudotsuga menziesii (Mirb.) Franco)." Thesis, Bangor University, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367387.
Full textIllanes, García-Huidobro Fernando José. "Prospección de Productos de (Nothofagus obliqua (MIRB.)) y (Nothofagus alpina (POEPP. ET ENDL.))." Tesis, Universidad de Chile, 2008. http://www.repositorio.uchile.cl/handle/2250/105138.
Full textFontes, LuiÌs. "The performance, constraints and potential of Douglas-fir [Pseudotsuga menziesii (Mirb.) Franco] in Portugal." Thesis, University of Oxford, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.249393.
Full textChoi, Jiwon. "Comparison of MIRT observed score equating methods under the common-item nonequivalent groups design." Diss., University of Iowa, 2019. https://ir.uiowa.edu/etd/6716.
Full textChatthai, Malinee. "Molecular characterization and regulation of embryogenesis-associated genes in Douglas-fir (Pseudotsuga menziesiic (Mirb.) Franco)." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0015/NQ44790.pdf.
Full textKilmer, Elizabeth Davis. "Validation of an Outcome Tracking System for Use in Psychology Training Clinics." Thesis, University of North Texas, 2020. https://digital.library.unt.edu/ark:/67531/metadc1707394/.
Full textBégin, Jean. "Productivité du Douglas vert (<> (Mirb.) Franco <> Franco) en relation avec des caractéristiques stationnelles /." [S.l.] : [s.n.], 1991. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=9567.
Full textandere Ausgabe: Productivité du douglas vert (Pseudotsuga menziesii (Mirb.) Franco var. menziesii Franco) en relation avec des caractéristiques stationelles.
Ruiz, diaz britez Manuela. "Adaptation du douglas (Pseudotsuga menziesii (MIRB.) FRANCO) aux changements climatiques : étude rétrospective basée sur l’analyse des cernes." Thesis, Paris, Institut agronomique, vétérinaire et forestier de France, 2016. http://www.theses.fr/2016IAVF0011/document.
Full textForest response to the drought increase associated to the climatic warming relies on tree adaptive potential, i.e. the genetic variation and the heritability of adaptive traits involved in resistance to drought. In the first chapter, we identify easy-to-measure proxies of adaptive traits for resistance to drought. We compare the wood microdensity of dead and surviving trees after the 2003 heat wave in France. The most discriminating variables are the mean density of high and lowdensity segments, high-density proportion and coefficient of variation of the lowdensity segment. The wood of the surviving trees is always denser and more heterogeneous. If these adaptive traits are variable and heritable, then it is possible to select for improved resistance to drought in the breeding population as well as in natural regeneration. Our results also suggest that directional selection is going on in more or less water-stressed environments. The direction is variable according to the nature of the selection pressure in the different regions. In the Chapter II, we estimate the evolutionary potential to drought of the introduced Douglas-fir in France. This evolutionary potential relies on the magnitude of the genetic variation and of the heritability of the adaptive traits found in the first chapter. The heritability and the genetic variation are highly variable between provenances, sites and, to a much lower extent, between annual rings. Most variables have moderate to high heritability estimates for at least some provenances in some sites. Some traits tend to have generally higher heritability and genetic variation estimates. These are mostly variables of the density part of the annual ring. The variables having at the same time relatively high estimates of heritability and genetic variation are good candidates for becoming efficient selection traits for resistance to drought in tree breeding as well as in natural regeneration. The significant between-site variation suggests that the heritability estimates increase with site quality. The estimates are also significantly different between provenances with a strong provenance × site interaction. Conversely there is little significant between annual-ring variation. The chapter III takes advantage of the annual-ring variation to study the relationships between the genetic parameter estimates and climatic and soil variables. The heritability and genetic variation estimates of most variables significantly relates with most tested environmental variables. Very few variables never correlates with any environmental variable. The significant relationships are very variable between traits, provenances and sites. The most important predictors are temperature, evapotranspiration, and soil water reserve and water deficit. Rainfall marginally influences the genetic parameter estimates. Generally, the better the growing conditions, the higher the estimates. All components of the experimental trials affect the genetic parameters estimates. Thus, the choice of the plant material and of the experimental site strongly determines the genetic parameter estimates. The uncontrolled climatic variation may randomly affect the estimates
Fossati, Caroline. "Détection et caractérisation électrique de précipités dans le silicium par des techniques non destructrices (FTIR, MIRB, LBIC,. . . )." Aix-Marseille 3, 1996. http://www.theses.fr/1996AIX30088.
Full textDuponnois, Robin. "Les bactéries auxiliaires de la mycorhization du Douglas (Pseudotsuga menziesii (Mirb. ) Franco) par Laccaria laccata souche S238." Nancy 1, 1992. http://docnum.univ-lorraine.fr/public/SCD_T_1992_0023_DUPONNOIS.pdf.
Full textMarques, Renato. "Dynamique du fonctionnement mineral d'une plantation de douglas (pseudotsuga menziesii (mirb. ) franco) dans les monts du beaujolais (france)." Paris, ENGREF, 1996. http://www.theses.fr/1996ENGR0015.
Full textMorrow, Carl. "Cryopreservation of Podocarpus elongatus (Ait.) L'Herit. ex Pers. and Podocarpus falcatus (Thunb.) R. Br. ex Mirb. zygotic embryos." Thesis, University of Cape Town, 1994. http://hdl.handle.net/11427/25771.
Full textParladé, Izquierdo Xavier. "Técnicas de inoculación de abeto de Douglas (Pseudotsuga menziesii (Mirb.)Franco) con hongos ectomicorrícicos y su aplicación en reforestación." Doctoral thesis, Universitat Autònoma de Barcelona, 1992. http://hdl.handle.net/10803/32179.
Full textEl objetivo principal de este trabajo es la aplicación de técnicas de inoculación de platnas de abeto de Douglas (Pseudotsuga menziesii (Mirb.)Franco) con hongos ectomicorrícicos seleccionados para las condiciones españolas, con el objetivo de mejorar la calidad de planta de reforestación. Primeramente se ha realizado un proceso de selección de hongos por hábitat, especie asociada, capacidad de crecimiento en cultivo y formación de micorrizas in vitro. Sobre un total de 48 cepas probadas pertenecientes a 36 especies, se han seleccionado 32 cepas en 24 especies por su capacidad micorrícica en cultivo puro. Las técnicas de inoculación de plantas producidas en contenedor han incluïdo inóculo vegetativo, miceli incluído en gel de alginato e inóculo de esporas aplicados a distintas dosis. El inóculo vegetativo de Hebeloma crustuliniforme, Laccaria bicolor, L. laccata y Lyophyllum decastes ha resultado efectivo en la formación de ectomicorrizas, con dosis óptimas variables. La producción de micelio incluído en gel de alginato ha mostrado un grado variable de tolerancia de determinados hongos a las concentraciones elevadas de CaCI2 utilitadas para polimerizar el alginato y al almacenamiento en frío. La formación de micorrizas con este tipo de inóculo se obtuvo únicamente con L. bicolor que resultó efectivo a bajas dosis de aplicación. El inóculo de esporas se obtubo principalmente a partir de hongos hipogeos de fructificación regular en plantaciones adultas de abeto de Douglas. Los esporocarpos de Rhizopogon subareolatus y Melanogaster ambiguus proporcionaron un elevado número de esporas que fueron efectivas en la formación de ectomicorrizas a dosis relativamente bajas. Adicionalmente, se ha iniciado el desarrollo de técnicas de inoculaciones dobles con hongos ectomicorrícicos seleccionados. los resultados in vitro han permitido determinar la capacidad colonizadora relativa y la inducción de la formación de raíces cortas de distintas especias de hongos. Los resultados obtenidos en estas condiciones indican que L. Bicolor y R. subareolatus son hongos de elevada capacidad competitiva.Las inoculaciones mixtas en condiciones de contenedor han resultado en una proporción variable de plantas con dos hongos simbiontes coexistiendo en el mismo sistema radicular, dependiendo de la concentración inicial de cada hongo. Finalmente, se ha iniciado el desarrollo de bioensayos con el objetivo de determinar la infectividad natural de suelos de plantación y su receptividad a las distintas especies de hongos introducidas. Los resultados se discuten en relación a su aplicabilidad en el proceso de selección de hongos adaptados a las condiciones ecológicas de las zonas a repoblar.
Klumpp, Raphael Thomas [Verfasser], Hans Heinrich [Akademischer Betreuer] Hattemer, and Franz [Akademischer Betreuer] Gruber. "Untersuchungen zur Genökologie der Douglasie (Pseudotsuga menziesii [Mirb.] Franco) / Raphael Thomas Klumpp. Gutachter: Franz Gruber. Betreuer: Hans Heinrich Hattemer." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2002. http://d-nb.info/1043994068/34.
Full textGuzmán, Santibáñez Diego Ignacio. "Influencia del vaporizado sobre la resistencia a la pudrición de madera de renoval de roble (Nothofagus obliqua (Mirb.) Oerst)." Tesis, Universidad de Chile, 2017. http://repositorio.uchile.cl/handle/2250/151386.
Full textNothofagus obliqua (Mirb.) Oerst (roble o pellín), es una especie que se distribuye desde la Región de Valparaíso hasta la Región de Los Lagos; también habita en Argentina. Esta especie se caracteriza por la alta durabilidad natural que presenta su madera en individuos adultos. Sin embargo, para la madera proveniente de renovales, con diferentes características de color y densidad, no existen antecedentes sobre su comportamiento frente al ataque de hongos de pudrición u otros agentes de biodeterioro. Actualmente, la madera de renovales de roble es sometida a un tratamiento de “vaporizado”, el que tiene como objetivo igualar el color rosado a rojizo del duramen de la madera de renoval, con el rojo oscuro del duramen de roble pellín, mucho más apreciado en el mercado. Con el objetivo de proporcionar antecedentes sobre la durabilidad natural de la madera de renoval de roble y de la influencia del tratamiento de cambio de color (vaporizado), se evaluó la resistencia de estas maderas frente a la acción de hongos de pudrición mediante la pérdida de peso, solubilidad en soda y el % de lignina. Para realizar el estudio se utilizó madera de renoval de roble, empleándose 40 probetas de albura y 40 de duramen. Se aplicó el proceso de vaporizado a 20 probetas de cada grupo, de manera de compararlas con el comportamiento de la madera sin vaporizar frente al ataque del hongo de pudrición blanca Polystictus versicolor y de pudrición café Poria monticola, utilizando además, 20 probetas de roble adulto como testigo. La mitad de las probetas de cada conjunto fue evaluada a los 2 meses (T1) y el resto a los 4 meses (T2) desde el inicio del ataque fúngico. Los resultados indicaron que el vaporizado no tuvo influencia sobre la resistencia de la madera de renoval frente al ataque de P. versicolor, que generó el %PP más alto para todos los tipos de madera a los 2 meses de acción fúngica. Así mismo, el % de solubilidad en soda indicó que el hongo de pudricion blanca provocó el mayor biodeterioro en comparación con el hongo de pudricion café. Para el caso de P. monticola, se observó que el vaporizado tampoco tuvo efecto sobre la resistencia al ataque de pudrición, generándose el mayor biodeterioro a los 4 meses (T2) que a los 2 meses (T1). Esto señaló finalmente, que la madera de renoval de roble no es una madera durable, considerando su resistencia frente al ataque de hongos de pudrición.
Nothofagus obliqua (Mirb.) Oerst (roble o pellín), is a specie allocated from Valparaiso Region to Los Lagos Region, Chile, also it can be found in Argentina. This kind is characterised by its high natural durability of its wood in adults members. Nevertheless, there are not history, for wood from secondary forests, with different characteristics of color and density, about its behaviour against the fungal attack or other biodeterioration agents. Nowadays, the roble wood from secondary forests is subjected to a “steaming” treatment, which aims to equalize pink to reddish heartwood color of the wood from secondary forests, with the dark red of the roble pellin heartwood, much more appreciated in the market. In order to provide history about the natural durability of the roble secondary forest wood, and of the influence of the color change treatment (steaming), the resistance of these woods against the action of fungal through weightloss, soda solubility and the lignin percentage was evaluated. Roble wood (renoval) was used to carry out the research, using 40 test tubes for sapwood and 40 test tubes for heartwood. Steaming process was tested in 20 test tubes of each group to do the comparison with those samples that were not under the process but under the white rot fungi attack Polystictus versicolor and the brown fungi Poria monticola. Also 20 test tubes of old roble were used as reference sample. Half of the samples of each group was checked at two months (T1) and the remaining samples at four months (T2) since the attacks of fungi started. The results shown that the steaming did not affect the wood resistance against the attack of P. versicolor produced the highest %PP for all the samples at 2 months of the test. Moreover, the %S indicated that the white fungi produced a bigger biodeterioration than the brown one. In the case of P. Monticola, it was observed that the steaming had no effect neither about the resistance of fungal attack, generating the greatest deterioration at 4 months (T2) than 2 months (T1). This finally pointed that the roble secondary forest wood is not a durable one, considering its resistance against the fungal attack
Pilate, Gilles. "Etude du rôle des phytohormones dans le développement végétatif et floral chez Pseudotsuga Menziesii (Mirb.) Franco, par des méthodes immunoenzymatiques." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb376088831.
Full textKaundun, Shiv Shankhar. "Contribution biochimique à la connaissance systématique et génétique du pin d'Alep (Pinus halepensis Mill. ) et du Douglas (Pseudotsuga menziesii Mirb. )." Lyon 1, 1995. http://www.theses.fr/1995LYO10067.
Full textPilate, Gilles. "Etude du role des phytohormones dans le developpement vegetatif et floral chez pseudotsuge menziesii (mirb. ) franco, par des methodes immunoenzymatiques." Paris 6, 1987. http://www.theses.fr/1987PA066580.
Full textUgarte, Hidalgo Mauricio Douglas Francisco. "Caracterización del crecimiento en renovales de roble (Nothofagus obliqua (Mirb). Oerst) en la Comuna de Curacautín, Región de la Araucanía." Tesis, Universidad de Chile, 2014. http://repositorio.uchile.cl/handle/2250/151601.
Full textEn Chile existen aproximadamente 1,4 millones de hectáreas de renovales de Roble (Nothofagus obliqua), Raulí (N. alpina) y Coigüe (N. dombeyi) o combinaciones de estas especies. La mayoría de estos renovales se encuentran con algún grado de degradación o con cierto nivel de intervención, producto de la actividad agrícola, ganadera y leñera. Esta es una de las razones para establecer criterios de manejo sustentable. El presente estudio tiene como objetivo general “Determinar la tasa de crecimiento de los últimos 10 años, en diferentes renovales dominados por Nothofagus obliqua, orientados a uso productivo en la Comuna de Curacautín, Región de la Araucanía”. El estudio consistió en identificar nueve rodales correspondientes al Tipo Forestal Roble-Raulí-Coigüe, Subtipo renoval y bosque secundario puro, con potencial productivo en la Comuna de Curacautín. En cada uno de los rodales se instalaron tres parcelas de muestreo para su caracterización, cada una de 1.000 m2. En cada parcela se extrajeron tarugos a la altura del DAP (diámetro a la altura del pecho) con el fin de estimar las tasas de crecimiento en DAP, área basal y volumen de cada rodal, entre los años 2001 y 2010. Para comparar y analizar los resultados se aplicó una prueba t de Student de muestras pareadas, con el objetivo de determinar para cada rodal si existen diferencias significativas en las tasas de crecimiento entre los años.
Hofreiter, Anton. "Die infragenerische Gliederung der Gattung Bomarea Mirb. und die Revision der Untergattungen Sphaerine (Herb.) Baker und Wichuraea (M. Roemer) Baker (Alstroemeriaceae)." Diss., lmu, 2003. http://nbn-resolving.de/urn:nbn:de:bvb:19-17074.
Full textJansen, Kirstin. "Stable Isotopes and Metabolite Profiles as Physiological Markers for the Drought Stress Sensitivity in Douglas-Fir Provenances (Pseudotsuga menziesii (MIRB.) FRANCO)." Doctoral thesis, Humboldt-Universität zu Berlin, 2018. http://dx.doi.org/10.18452/19617.
Full textIn Central Europe, more frequent periods of dry and hot weather are expected in the future with economic losses in the forestry sector. Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) is discussed as a timber species alternative to the economically important but drought-sensitive spruce (Picea abies (L.) H. Karst.). Two subspecies, the coastal (FDC) and the interior Douglas-fir (FDI), are native to an extensive natural range in North America, offering a great potential for the selection of productive and drought tolerant provenances. Our goal was to investigate the drought response of different Douglas-fir provenances on the morphological and physiological level, as well as the mechanisms underlying drought resistance or susceptibility. A provenance trial in southwestern Germany established in 1958 allowed the study of 50-year-old Douglas-fir trees of diverse provenances along a height gradient. Under controlled conditions, we simulated the effects of a heat wave on young trees of two provenances. We analyzed carbon and oxygen stable isotopic composition, leaf gas exchange, changes in metabolism and tree growth. FDC from humid regions responded to drought with strong growth decline and a medium to strong stomatal closure, supported by enhanced instantaneous photoprotection. FDC from regions with very dry summer conditions showed a small growth decline and anisohydric regulation of stomatal conductance under drought, supported by high levels of osmotic adjustment. High monoterpene emissions might contribute to the drought resistance. FDI from an arid region showed high assimilation rates, low growth potential and a high antioxidant, photoprotective, drought and heat protective potential. The provenances differ greatly in their dry reaction and their protective mechanisms. The cultivation of drought resistant crops will be beneficial at sites predicted to accumulate arid summer periods.
Kantarl, Mustafa. "Intraspecific variation in the IUFRO 16 year old Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) : Provenance-progeny trial in Haney, British Columbia." Thesis, University of British Columbia, 1989. http://hdl.handle.net/2429/27495.
Full textForestry, Faculty of
Graduate
Bornot, Yoran. "Peut-on changer les trajectoires de croissance du chêne sessile et du sapin de Douglas suite à une sécheresse en modulant la fertilité du sol ?" Thesis, Université de Lorraine, 2017. http://www.theses.fr/2017LORR0356/document.
Full textFertilization and liming are usual practices in agronomy but uncommon in forestry. Experimental liming or fertilization in forest were tested in the 1970’s. The initial aim of these experimentations was to determine if the addition of nutrients on poor or acidic forest soil could increase tree growth or even restore crown condition in case of decline. Physiological studies have established the implication of water availability in soil nutrients uptake and their transport in the sap and also via combined effects in various processes such as cell growth or stomatal control. Recently, extreme drought events responsible of many forest species diebacks have aroused the concern of forest managers. In addition, climate models predict an increase in the frequency and intensity of drought hazards in the future and forest management must be adapted to face them. In this context, and thanks to the current knowledge on the interactions between mineral and water alimentation, we investigate whether nutrient supply could mitigate the negative effects of water deficits by increasing the capacity 1/ to withstand droughts and 2/ to recover optimum growth after the drought induced crisis, i.e. to improve the resilience of trees. Conversely, would the vulnerability of trees to water deficits be increased? To answer this question, we investigated fertilization experiments located in three forests in France and applied on two species, sessile oak and Douglas fir. On each of these sites, selected trees were cored to the pith to determine the annual variations of radial growth from measurements of the tree-rings widths. These growth variations were used as a basis to the calculation of resistance, recovery and resilience indices to drought events, which were quantified using a soil water deficit index computed by the water balance model BILJOU©. On the site of Bercé, the water-use efficiency was estimated from the δ13C of the latewood. Retrospective analyses shown that the radial growth of oak trees in Bercé and Tronçais was significantly increased after the fertilization. Radial growth was then modelled from climate and soil water deficit. Douglas fir radial growth was slightly impacted by the nutrient supply in the Potées site. This analysis highlights the time-limited effect of this nutrient supply on the growth stimulation: no effect subsists more than 10 years after nutrient supply in Bercé and more than 20 years in Tronçais. Despite this transient effect on oak growth, no differences between treatments on the capacity of trees to resist and to recover after drought events was observed. The main factors influencing resistance and recovery of growth were the soil water deficit intensity and duration. These results corroborate δ13C analyzes in oak rings, which, again, were only significantly correlated with climate and were independent of treatment. The lack of modification of the resilience between the treatments, whatever the site and the species studied, is discussed. More broadly, the concept of resilience and its use in dendroecology are questioned
Koshy, Mathew P. "Genetic effects on wood shrinkage, relative density, grain angle, tracheid length, and fibril angle in Douglas-fir (Pseudotsuga menziessi var. menziesii (mirb.) franco)." Thesis, University of British Columbia, 1993. http://hdl.handle.net/2429/41465.
Full textForestry, Faculty of
Graduate
González, Díaz Álvaro. "Evaluación económica de los tratamientos silviculturales aplicados en rodales mixtos de Sequoia sempervirens ((D.Don) Endl.) y Pseudotsuga menziesii ((Mirb.) Franco), Villarrica, IX Región." Tesis, Universidad de Chile, 2005. http://www.repositorio.uchile.cl/handle/2250/105073.
Full textBlohm, Jan-Henning [Verfasser], and Jörg B. [Akademischer Betreuer] Ressel. "Holzqualität und Eigenschaften des juvenilen und adulten Holzes der Douglasie (Pseudotsuga menziesii (Mirb.) Franco) aus süddeutschen Anbaugebieten / Jan-Henning Blohm. Betreuer: Jörg B. Ressel." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2015. http://d-nb.info/1075858607/34.
Full textImbault, Nadine. "Analyse des cytokinines dans les pousses en cours de differenciation florale et dans les bourgeons sexues du sapin de douglas (pseudotsuga menziesii (mirb) franco." Orléans, 1989. http://www.theses.fr/1989ORLE2012.
Full textMalmqvist, Cecilia. "Planting and survivability of Douglas fir (Pseudotsuga menziesii (Mirb.) Franco) in Sweden : Questions of seedling storability, site preparation, bud burst timing and freezing tolerance." Doctoral thesis, Linnéuniversitetet, Institutionen för skog och träteknik (SOT), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-59933.
Full textVelasco, Pizarro Jorge Andrés. "Comportamiento de la madera de renoval de coihue (Nothofagus dombeyi (Mirb.) Oerst.) sometidas a programas de secado convencional modificados por la técnica de drying effort." Tesis, Universidad de Chile, 2009. http://repositorio.uchile.cl/handle/2250/151546.
Full textEste estudio analizó el comportamiento de la madera de renoval de Coihue (Nothofagus dombeyi (Mirb) Oerst), sometida a proceso de secado convencional, cuya finalidad fue obtener madera seca a un 8% de contenido de humedad. La variable a analizar en este trabajo fue el comportamiento de distintos programas de secado sobre la madera de Coihue. Estos programas de secado corresponden a dos programas tentativos creados en base a la experiencia en secado de la madera y dos programas modificados de los dos tentativos, mediante la técnica de esfuerzos de secado (Drying effort) propuesto por Bramahall (1975). Basado en la disminución del tiempo de secado de cada etapa progresiva del programa de secado, y a la vez, aumentando la diferencia psicrométrica, manteniendo los esfuerzo de secado constante. Este trabajo fue financiado por el Proyecto INNOVA CORFO, Innovación Empresarial IE-2, Código 205-4414; adjudicado a la empresa Simple S.A “Desarrollo en Chile de una tecnología de elaboración de muebles plegables usando madera de poco valor comercial de bosque nativo, bajo estándares de certificación ambiental internacional y destinados a la exportación”
Goßner, Martin. "Diversität und Struktur arborikoler Arthropodenzönosen fremdländischer und einheimischer Baumarten : ein Beitrag zur Bewertung des Anbaus von Douglasie (Pseudotsuga menziesii (Mirb.) Franco) und Roteiche (Quercus rubra L.) /." Berlin : Inst. für Ökologie, 2004. http://www.gbv.de/dms/bs/toc/472603280.pdf.
Full textDA, ROS NADIA. "Biologie et impact des insectes specialises dans l'exploitation des cones de meleze, larix decidua mill. , et du sapin de douglas, pseudotsuga menziesii (mirb. ) franco, en italie." Orléans, 1997. http://www.theses.fr/1997ORLE2006.
Full textEspinosa, Barrueto Carolina. "Cambio de color en madera de renovables de raulí (Nothofagus alpina (POEPP. ET END L.) Krasser) y robke (Nothofagus oblicua (MIRB) Oerst) mediante procesos de vaporización." Tesis, Universidad de Chile, 2004. http://www.repositorio.uchile.cl/handle/2250/105036.
Full textAmara, Holm. "Influence de l'aluminium et des sols acides sur la croissance du sapin de Douglas (Pseudotsuga menziesii, Mirb.) : rôle de la paroi dans les réponses au stress aluminique." Thesis, Limoges, 2020. http://aurore.unilim.fr/theses/nxfile/default/a59ed152-5cd0-4283-8056-5b8950a5f8d5/blobholder:0/2020LIMO0054.pdf.
Full textIn Europe, softwood forests are very abundant and are characterized by an acidic soil profile. In these conditions, when the soil pH drops below 5.5, aluminum is present in soils in a soluble and bioavailable form Al3+. This work was carried out on Douglas fir (Pseudotsuga menziesii), a coniferous tree, widely distributed in France and particularly in the Limousin region. In this study we used different cultivation methods (in vitro cultures with controlled conditions, and semi-controlled conditions in greenhouse on naturally acidic forest soils rich in Al). Plants were analyzed at different stages of development (seedling stage and young tree stage) and for different exposure periods (2 and 11 months). The results have shown that the growth of Douglas fir and its mineral nutrition were disturbed when exposed to high Al concentrations (500 μM AlCl3 in vitro, and about 1 mg Al.g-1 at pH 5 on forest soils). We showed that the roots exhibited severe symptoms of toxicity and accumulated the majority of the Al within the cell wall. It has been shown that, to cope with aluminum toxicity, Douglas fir developed different strategies. On one hand, the chemical characterization of the cell wall revealed quantitative and qualitative modifications in the polysaccharidic composition of the wall, in particular pectins (harboring a higher galacturonic acid content with less ramification) following regulation of pectin methylesterase activity, and hemicelluloses (richer in glucomannans), suggesting a trapping process of Al in the cell wall structures. On the other hand, at the intracellular level, the results showed a stimulation of a key enzyme activity involved in the reduction of oxidative stress induced under aluminum stress, as well as an accumulation of proline, potentially capable of chelating Al inside the cell. Therefore, Douglas fir plantlets showed a relative high tolerance level to Al equivalent to other coniferous species which can be explained at the cellular level by an exclusion process involving retention by the cell wall but also a complexation process in the intracellular compartment
Allan, Wendy Lynne. "Variation in the stable carbon isotope composition of needle and annual rings in Pseudotsuga menziesii (Mirb.) Franco and its relation to water use needle nitrogen content and productivity." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1996. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/mq21902.pdf.
Full textDibán, Karmy María José. "Patrones biogeográficos de los ensambles de hongos Agaricales s.l. en bosques dominados por Nothofagus obliqua (Mirb) Oerst. y Nothofagus macrocarpa (A.Dc.) Vasq. & Rodr. en un gradiente latitudinal." Tesis, Universidad de Chile, 2019. http://repositorio.uchile.cl/handle/2250/169934.
Full textA nivel global se ha documentado patrones de riqueza de hongos asociado a las condiciones edáficas y al clima actual, la cual varía según el grupo trófico. De los 18 Órdenes pertenecientes a la Clase Agaricomycetes; Agaricales, Russulales y Boletales se agrupan en Agaricales sensu lato, el cual presenta un gradiente de riqueza de especies con un leve aumento hacia el ecuador, relacionado con valores intermedios a altos de precipitaciones. Los bosques del sur de Sudamérica se encuentran dominados por el género Nothofagus. En Chile, éste se encuentra ampliamente distribuido, con 10 especies. Entre éstas, N. macrocarpa y N. obliqua abarcan la distribución más al norte. Poco se sabe sobre los factores que estarían incidiendo sobre los patrones de riqueza y composición de Agaricales s.l., donde carecen estudios de este tipo para N. macrocarpa, mientras que para N. obliqua se ha descrito que la riqueza y abundancia de especies micorrízicas disminuye a mayores concentraciones de nitratos. Este estudio pretende responder si existe un gradiente de riqueza y composición de especies fúngicas del grupo de Agaricales s.l. en función al conjunto de variables bióticas y abióticas en el gradiente latitudinal en los bosques dominados por dichas especies de Nothofagus, y de ser así, cuáles son los factores que más influyen sobre el patrón. Se realizó un muestreo a 5 localidades entre los -32,9 y -39,1 grados de latitud sur durante dos años, una vez al mes y unos días posterior a las lluvias. Se recolectó cuerpos fructíferos, muestras de suelo para la estimación de variables edáficas, y se midió la riqueza y composición de la vegetación. Las variables climáticas se descargaron a partir de WorldClim. En este estudio se reportan 30 Familias, 76 géneros y 265 especies. Los resultados muestran que existe un patrón creciente de riqueza de especies de hongos Agaricales s.l. de norte a sur, asociado al aumento en los montos de precipitación anual, en la riqueza de plantas, Na, N total, disminución del pH y de la estacionalidad en las precipitaciones. El aumento en la riqueza de especies hacia el sur se mantiene al evaluarlo por cada grupo trófico por separado, sin embargo, el grupo de las principales variables explicativas cambian entre ellos. En cada localidad estudiada hay un alto porcentaje de exclusividad de especies, así como también un alto recambio de especies dentro y entre localidades, donde a mayor distancia geográfica hay menor similitud en la composición de las especies presentes.
Global scale richness patterns of fungi are associated to edaphic variables and current climate, but each trophic group respond differentially. Agaricomycetes Class have 18 Orders, where Agaricales, Russulales and Boletales are agrupated in Agaricales sensu lato group, which have a global richness patterns with a high diversity on the tropics, asociated to medium to high levels of precipitation. Southern forest on south of South America are dominated by Nothofagus genus, which have a wide distribution in Chile with 10 species, where N. macrocarpa and N. obliqua are the northernmost species. Studies about which factors are influencing on richness and composition patterns of Agaricales s.l. are scarce, especially for N. macrocarpa. Studies on N. obliqua forest show that mycorrhiza richness and abundance decay on high nitrate concentration. The aim of this study is analyzing if exist a latitudinal richness and composition Agaricales s.l. patterns associated to a group of biotic and abiotic ambiental variables on N. macrocarpa and N. obliqua dominated forests, and to understand which ambiental variable is the most influence over the patterns. Five localities between -32,9 and -39,1 southern latitude were sampled over two years, once a month after rains. Fruiting bodies and soil were collected, to taxonomic determination and edaphic estimation respectively. Richness and composition of vegetation were sampled. Climatic variables were obtained from WorldClim database. In this study we report 30 Families, 76 genera and 265 species. Our results show an increasing richness patterns of Agaricales s.l. fungi from north to south, associated to the increment of precipitation, plant richness, Na, total N, decrease of pH and seasonality of precipitation. Trophic groups follow the same increasing pattern of richness from north to south, but explanatories variables change between them. There are a high percentage of species exclusivity and replacement within and between the localities, where at greater geographical distance there is less similarity in the composition of species between sites and localities.
Junio del 2020.
Jure, Wilkens Sebastián Eduardo. "Evaluación del crecimiento de un renoval intervenido de raulí (Nothofagus alpina (Poepp. et Endl.) Oerst.) y coigüe (Nothofagus dombeyi (Mirb.) Oerst.) en la Reserva Nacional Malleco, IX Región." Tesis, Universidad de Chile, 2007. http://www.repositorio.uchile.cl/handle/2250/105133.
Full textDavis, Elizabeth C. "Development of an Outcome Measure for Use in Psychology Training Clinics." Thesis, University of North Texas, 2017. https://digital.library.unt.edu/ark:/67531/metadc984154/.
Full textJansen, Kirstin [Verfasser], Arthur [Gutachter] Gessler, Ralf [Gutachter] Kätzel, and Andreas [Gutachter] Rigling. "Stable Isotopes and Metabolite Profiles as Physiological Markers for the Drought Stress Sensitivity in Douglas-Fir Provenances (Pseudotsuga menziesii (MIRB.) FRANCO) / Kirstin Jansen ; Gutachter: Arthur Gessler, Ralf Kätzel, Andreas Rigling." Berlin : Humboldt-Universität zu Berlin, 2018. http://d-nb.info/1184576890/34.
Full textDAOUDI, EL-HASSANIA. "Analyse des polyamines et des acides amines dans les pousses au cours de la periode d'induction florale et dans les bourgeons chez le sapin de douglas (pseudotsuga menziesii (mirb. ) franco)." Paris 6, 1994. http://www.theses.fr/1994PA066540.
Full textJara, Sánchez Carla Esther. "Evaluación del crecimiento y del daño por herbivoría en una plantación inicial de Nothofagus antarctica (G. Forst.) Oerst. y Nothofagus betuloides (Mirb.) Oerst en la Provincia de Palena, X Región." Tesis, Universidad de Chile, 2013. http://repositorio.uchile.cl/handle/2250/151597.
Full textDurante la colonización del territorio chileno, alrededor de tres millones de hectáreas de bosque nativo norpatagónico fueron incendiadas por el hombre, para la habilitación de terrenos para la agricultura y la ganadería. Las experiencias de reforestación con especies arbóreas nativas en la zona son escasas. El objetivo de este trabajo fue evaluar el crecimiento y el daño por herbivoría durante los dos primeros años de establecida una plantación con Nothofagus antarctica y Nothofagus betuloides. El estudio se realizó en una plantación de 56 ha ubicada en el Valle California (43º44’ LS, 71º48’LO), Provincia de Palena, Chile, realizada durante el año 2010 por la Sociedad Agrícola y Forestal SNP Patagonia Sur. En el año 2011 se establecieron 10 de parcelas de 400 m2 (20 x 20 m), para monitoreo permanente. En los veranos de los años 2011 y 2012 se midió la longitud y el diámetro a la altura del cuello (DAC) de todas las plantas vivas, y se determinó además el agente de daño (liebre o ratón). El nivel de daño por herbivoría se evaluó a través de una adaptación del Browse Rating Index (BRI) que adquiere valores desde 0 a 4, según el nivel de daño visualizado, con 0 = sin daño, 1 = daño leve (<20% de la planta afectada); 2 = daño moderado (20-45%); 3 = daño grave (>45%) y 4 = muerto. La densidad de plantación inicial fue de 1.300 plantas/ha. La supervivencia al segundo año de monitoreo de N. antarctica y N. betuloides fue del 95,3% y 37,7% de las plantas, respectivamente. El incremento corriente anual (ICA) en longitud fue de 12,8 cm y 7,4 cm, para cada una de las especies, respectivamente. El ICA en DAC fue de 1,86 mm y 1,68 mm, respectivamente.
Castellano, Paula Lucia. "Análisis dendrocronológico de los patrones de crecimiento de lenga [Nothofagus pumilio (Poepp. & Endl.) Krasser] y guindo [N. betuloides (Mirb.) Oerst.] y sus relaciones con el clima en el Lago del Desierto, Patagonia, Argentina." Bachelor's thesis, Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias, 2017. http://bdigital.uncu.edu.ar/9578.
Full textFil: Castellano, Paula Lucia. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias.
Gossner, Martin. "Diversität und Struktur arborikoler Arthropodenzönosen fremdländischer und einheimischer Baumarten Untersuchung ausgewählter Arthropodengruppen für eine faunistisch-ökologische Bewertung des Anbaus von Douglasie (Pseudotsuga menziesii (Mirb.) Franco) und Amerikanischer Roteiche (Quercus rubra L.) ; (Coleoptera, Heteroptera, Neuropterida, Araneae) /." [S.l. : s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=97204258X.
Full textKorte, Barbara. "Texte für das Theaterspiel von Kindern und Jugendlichen im ‚Dritten Reich‘." Doctoral thesis, 2017. http://hdl.handle.net/11858/00-1735-0000-0023-3E37-6.
Full textDing, Jing-Wei, and 丁境蔚. "Developing a computerized adaptive testing based on MIRT." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/84093721249314104662.
Full text國立臺中教育大學
教育測驗統計研究所
97
The present age in the multidimensional computerized adaptive (MCAT) testing research, most of researches which discuss the effect on the different parts of the tests are simulate. Less of researches are developed the MCAT system. The present age in the domestic research, National Taiwan Normal University Center for Educational Research and Evaluation is developed the only system which is related to MCAT, but the exposure control doesn’t combine item with this system. So this research developed the system which is provided not only user interface for MACT but also item. Based on the reason, the purposes are as follows: 1. To develop MCAT system which includes the exposure control, let examinee can examine and management can manage thing about the test. 2. Using the real data to simulate the CAT procedure, let estimate the result about this system This research established the user interface for MACT, let examinee can examine and surf the result, and management can manage. In the item response theory, it added the multidimensional random coefficients multinomial logit model to this system. In the exposure control, it added the SHC and the SHC is base on ability on line procedure with freeze to this system. In the whole simulation, it discovered that the expected a posteriori with the high relation is better than maximum likelihood estimation on the multidimensional mathematical item bank.