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Analysis of the impact of rainfall assimilation during LBA atmospheric mesoscale missions in Southwest Amazon

Biazeto, Bruno; Silva Dias, Maria A. F.
Fonte: ELSEVIER SCIENCE INC; NEW YORK Publicador: ELSEVIER SCIENCE INC; NEW YORK
Tipo: Artigo de Revista Científica
ENG
Relevância na Pesquisa
36.83%
The assimilation of satellite estimated precipitation data can be used as an efficient tool to improve the analysis of rainfall generated by numerical models of weather forecast. The system of data assimilation used in this study is cumulus parameterization inversion based on the Kuo scheme. Reanalysis were performed using the field experiment data of the LBA Project (WETAMC and DRYtoWET-AMC), where it was possible to verify an improvement in the simulations results, since the data assimilation corrects the position and the intensity of rainfall in the numerical model. (C) 2012 Elsevier B.V. All rights reserved.; National Council for Scientific and Technological Development (CNPq); National Council for Scientific and Technological Development (CNPq); MASTER/IAG/USP; MASTER/IAG/USP

Nitrogen assimilation in Citrus based on CitEST data mining

Wickert, Ester; Marcondes, Jackson; Lemos, Manoel Victor; Lemos, Eliana G.M.
Fonte: Sociedade Brasileira de Genética Publicador: Sociedade Brasileira de Genética
Tipo: Artigo de Revista Científica Formato: 810-818
ENG
Relevância na Pesquisa
36.83%
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq); Assimilation of nitrate and ammonium are vital procedures for plant development and growth. From these primary paths of inorganic nitrogen assimilation, this metabolism integrates diverse paths for biosynthesis of macromolecules, such as amino acids and nucleotides, and the central intermediate metabolism, like carbon metabolism and photorespiration. This paper reports research performed in the CitEST (Citrus Expressed Sequence Tag) database for the main genes involved in nitrogen metabolism and those previously described in other organisms. The results show that a complete cluster of genes involved in the assimilation of nitrogen and the metabolisms of glutamine, glutamate, aspartate and asparagine can be found in the CitEST data. The main enzymes found were nitrate reductase (NR), nitrite reductase (NiR), glutamine synthetase (GS), glutamate synthetase (GOGAT), glutamate dehydrogenase (GDH), aspartate aminotransferase (AspAT) and asparagine synthetase (AS). The different enzymes involved in this metabolism have been shown to be highly conserved among the Citrus and Poncirus species. This work serves as a guide for future functional analysis of these enzymes in citrus.

Sobrevivência, morfo-anatomia, crescimento e assimilação de carbono de seis espécies arbóreas neotropicais submetidas à saturação hídrica do solo; Survival, morpho-anatomy, growth and carbon assimilation of six neotropical tree species submitted to flooding

Viviane Camila de Oliveira
Fonte: Biblioteca Digital da Unicamp Publicador: Biblioteca Digital da Unicamp
Tipo: Tese de Doutorado Formato: application/pdf
Publicado em 28/02/2011 PT
Relevância na Pesquisa
36.83%
Alchornea triplinervia, Nectandra oppositifolia, Eugenia umbelliflora, Gomidesia schaueriana, Guapira opposita e Guatteria gomeziana são espécies arbóreas típicas das áreas alagadas da Floresta de Restinga do sudeste do Brasil. A fim de determinar os efeitos do alagamento sazonal do solo sazonal na sobrevivência, morfo-anatomia, crescimento e taxa de assimilação de carbono nestas espécies, foram avaliadas as respostas de crescimento, os parâmetros fotossintéticos básicos, a concentração de pigmentos fotossintéticos, as características foliares e as alterações morfo-anatômicas de indivíduos jovens crescendo experimentalmente em condições não alagadas (controle) e alagadas. A. triplinervia, N. oppositifolia, E. umbelliflora e G. schaueriana foram capazes de sobreviver e crescer durante o período de alagamento do solo, embora este crescimento tenha sido reduzido em comparação às plantas não alagadas. Lenticelas hipertrofiadas foram observadas em A. triplinervia e N. oppositifolia e a formação de raízes adventícias somente em A. triplinervia. Nas plantas alagadas de G. opposita e G. gomeziana o crescimento cessou e a sobrevivência foi comprometida, tendo ocorrido a morte de alguns indivíduos a partir da segunda semana de alagamento do solo. A taxa de assimilação de carbono foi reduzida em todas as espécies quando submetidas ao alagamento do solo...

Food ingestion and assimilation by Hyale media (Dana, 1853) (Crustacea - Amphipoda)

Tararam,Airton Santo; Mesquita,Hilda de Souza Lima; Wakabara,Yoko; Peres,Clóvis A
Fonte: Instituto Oceanográfico da Universidade de São Paulo Publicador: Instituto Oceanográfico da Universidade de São Paulo
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/01/1990 EN
Relevância na Pesquisa
36.94%
The feeding of Hyale media was analysed under laboratory conditions in winter and summer temperatures. The results showed that assimilation rates increased following food ingestion rates and decreased when egestion rates increased. In winter temperatures no significant differences were found in the assimilation rates among developmental stages and sexes. In summer temperatures assimilation rates for ovigerous and non-ovigerous females were higher than those found for adult and young males. Although not statistically analysed, mean assimilation efficiencies were highest among ovigerous females and adult males, in summer. The quantitative and qualitative variations found in the assimilation efficiency and rates were explained by the differential effect of temperature on the specific growth rate and in the physiological conditions of each growth stage concerned.

Nitrogen assimilation in Citrus based on CitEST data mining

Wickert,Ester; Marcondes,Jackson; Lemos,Manoel Victor; Lemos,Eliana G.M.
Fonte: Sociedade Brasileira de Genética Publicador: Sociedade Brasileira de Genética
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/01/2007 EN
Relevância na Pesquisa
36.83%
Assimilation of nitrate and ammonium are vital procedures for plant development and growth. From these primary paths of inorganic nitrogen assimilation, this metabolism integrates diverse paths for biosynthesis of macromolecules, such as amino acids and nucleotides, and the central intermediate metabolism, like carbon metabolism and photorespiration. This paper reports research performed in the CitEST (Citrus Expressed Sequence Tag) database for the main genes involved in nitrogen metabolism and those previously described in other organisms. The results show that a complete cluster of genes involved in the assimilation of nitrogen and the metabolisms of glutamine, glutamate, aspartate and asparagine can be found in the CitEST data. The main enzymes found were nitrate reductase (NR), nitrite reductase (NiR), glutamine synthetase (GS), glutamate synthetase (GOGAT), glutamate dehydrogenase (GDH), aspartate aminotransferase (AspAT) and asparagine synthetase (AS). The different enzymes involved in this metabolism have been shown to be highly conserved among the Citrus and Poncirus species. This work serves as a guide for future functional analysis of these enzymes in citrus.

Partitioning of nitrate reductase activity in Coffea arabica L. and its relation to carbon assimilation under different irradiance regimes

Carelli,Maria Luiza C.; Fahl,Joel I.
Fonte: Brazilian Journal of Plant Physiology Publicador: Brazilian Journal of Plant Physiology
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/09/2006 EN
Relevância na Pesquisa
36.94%
The distribution of in vivo nitrate reductase (EC 1.6.6.1) activity (NRA) between leaves and roots was studied in young coffee plants (Coffea arabica L.) grown in pots with watered sand in a glasshouse and irrigated with nutrient solution. The influence of irradiance regimes on the partitioning of NRA, and its relation with CO2 assimilation, was also evaluated in plants grown under approximately 20, 50 and 100% of full sunlight. Time-course of nitrate accumulation in nitrogen-starved plants showed a similar pattern in leaves and roots after supplying 15 mmol L-1 nitrate, indicating efficient ability of the roots to export nitrate to the shoot. At the same time, NRA was rapidly induced in both tissues. In shoots, NRA partitioning was synchronized among the various leaf pairs. The initial increase in NRA, as each leaf pair emerged, coincided with the optimum NRA values of the next older leaf pair. However, the average shoot NRA remained relatively constant for each sampling date. During the first 23 weeks of vegetative growth, the mean NRA was 32% higher in leaves than in roots. The irradiance regimes influenced the partitioning of NRA between leaves and roots. The NRA leaf /root ratio was 0.72, 1.21 and 1.05, respectively, for plants grown under 20%...

Assimilation, multiculturalism, and colorblindness: Mediated and moderated relationships between social dominance orientation and prejudice

Levin, Shana; Matthews, Miriam; Guimond, Serge; Sidanius, James; Pratto, Felicia; Kteily, Nour; Pitpitan, Eileen V.; Dover, Tessa
Fonte: Elsevier BV Publicador: Elsevier BV
Tipo: Artigo de Revista Científica
EN_US
Relevância na Pesquisa
36.89%
Using correlational and experimental data, we examined the degree to which personal and perceived normative support for the acculturation ideologies of assimilation, multiculturalism, and colorblindness mediated and moderated the relationship between social dominance orientation (SDO) and prejudice among 299 White students at three American colleges. Correlational results indicated that personal support for the acculturation ideologies mediated the SDO–prejudice relationship. Personal support for assimilation (a hierarchy-enhancing ideology) positively related to SDO; multiculturalism and colorblindness (hierarchy-attenuating ideologies) negatively related to SDO. An experimental manipulation varied whether assimilation, multiculturalism, or colorblindness was considered normative in the United States. In addition to a control, a fifth condition primed the Obama presidency. SDO related most strongly to prejudice toward American immigrants and ethnic minorities when assimilation norms and the Obama presidency were primed. Efforts to reduce the associations between SDO and prejudice are discussed in terms of highlighting hierarchy-attenuating national norms of multiculturalism and colorblindness.; Psychology

Assimila????o 3DVAR no WRF e a Previs??o do Tempo no Sul do Brasil; 3DVAR Assimilation in WRF and the Weather Prediction in the South of Brazil

Beck, Vinicius Carvalho
Fonte: Universidade Federal de Pelotas; Meteorologia; Programa de P??s-gradua????o em Meteorologia; UFPel; BR Publicador: Universidade Federal de Pelotas; Meteorologia; Programa de P??s-gradua????o em Meteorologia; UFPel; BR
Tipo: Dissertação Formato: application/pdf
POR
Relevância na Pesquisa
37.06%
The procedure to combine mathematical models with noise data, in order to improve numerical weather forecasting by statistical methods, is an important and challenging meteorology research field, known as data assimilation. The 3DVAR approach, state of art in data assimilation technique, is applied in this study. The aim of present development is to evaluate the results of the data assimilation from INMET automatic stations and soundings in Southern Region of Brazil in the weather forecasts of the WRF model with data assimilation via 3DVAR method, analyzing in each processed case, if the forecasting reproduces the synoptic scenario observed, with better prediction then the WRF without data assimilation. The specific aim is to evaluate the assimilation procedure of two precipitation events occurred in the year 2012. This study is especially important, because the INMET automatic weather stations data are not transmitted by GTS. Therefore, these data were not assimilated by prediction systems generated by global models, such as GFS, which provides initial and boundary conditions for regional models, such as WRF. The results show that the WRF with data assimilation procedure, reproduces satisfactorily the true synoptic scenario observed in the two cases evaluated and produces better forecasts then WRF without data assimilation. The thermodynamic analysis showed that the WRF with data assimilation producing vertical profiles of air temperature and dew point temperature very close to the observed profiles...

Valida????o da assimila????o de dados na infer??ncia da refletividade de um radar com sistema MM5; Validation of data assimilation in the inference of reflectivity of a radar with MM5 system

SILVA, Gustavo Leite da
Fonte: Universidade Federal de Pelotas; Meteorologia; Programa de P??s-gradua????o em Meteorologia; UFPel; BR Publicador: Universidade Federal de Pelotas; Meteorologia; Programa de P??s-gradua????o em Meteorologia; UFPel; BR
Tipo: Dissertação Formato: application/pdf
POR
Relevância na Pesquisa
36.83%
On certain occasions the State of Rio Grande do Sul is affected by atypical weather systems events which are among the category of mesoscale phenomena. The inability of large scale numerical models to appropriately simulate several localized effects, which occurs over the most varied regions, associated to the fast increase of computational resources, it is facilitating and increasingly inducing the use of mesoscale models to improve the knowledge on those anomalous and severe events and even for use as a necessary and indispensable operational tool. The skill of mesoescala model to proceed in providing precipitation forecasts, in space and time scale compatible with to those of a Doppler meteorological radar, it is implemented the whole system of mesoscale modeling that constitutes the MM5. The occurrence of the relatively severe precipitation event, in the area close to the city of Cangu??u / RS, on January 11, 2008 was arbitrarily selected to evaluate the model skill - in inferring the reflectivity of the meteorological radar, installed in Cangu??u / RS proceeding with conventional data assimilations, PCA (Processing With Assimilation) and PSA (Processing Without Assimilation), as well an approach to the analysis of the thermo-hydrodynamics and synoptic conditions.; Em certas ocasi??es o Estado do Rio Grande do Sul ?? assolado por sistemas meteorol??gico com manifesta????es atmosf??ricas at??picas e que se enquadram entre os fen??menos de mesoescala. A impossibilidade de modelos num??ricos de grande escala simularem adequadamente diversos efeitos localizados...

Assimilation of agile practices in use

Wang, Xiaofeng; Conboy, Kieran; Pikkarainen, Minna
Fonte: John Wiley & Sons Publicador: John Wiley & Sons
Tipo: info:eu-repo/semantics/article; all_ul_research; ul_published_reviewed
ENG
Relevância na Pesquisa
36.97%
peer-reviewed; Agile method use in information systems development (ISD) has grown dramatically in recent years. The emergence of these alternative approaches was very much industry-led at the outset, and while agile method research is growing, the vast majority of these studies are descriptive and often lack a strong theoretical and conceptual base. Insights from innovation adoption research can provide a new perspective on analyzing agile method use. This paper is based on an exploratory study of the application of the innovation assimilation stages to understand the use of agile practices, focusing in particular on the later stages of assimilation, namely acceptance, routinisation and infusion. Four case studies were conducted and based on the case study findings, the concepts of acceptance, routinisation and infusion were adapted and applied to agile software development. These adapted concepts were used to glean interesting insights into agile practice use. For example, it was shown that the period of use of agile practices does not have a proportional effect on their assimilation depths. We also reflected on the sequential assumption underlying the assimilation stages, showing that adopting teams do not always move through the assimilation stages in a linear manner.

Assimilation of European immigrants : a study in role assumption and fulfilment

Craig, Jean I.
Fonte: Universidade Nacional da Austrália Publicador: Universidade Nacional da Austrália
Tipo: Thesis (PhD); Doctor of Philosophy (PhD)
EN_AU
Relevância na Pesquisa
36.94%
Among the 850,000 immigrants who have come to Australia since the end of the war are included some 171,000 “Displaced persons”, war-time and post-war emigrants resettled in this country by arrangement with the International Refugee Organisation. These immigrants are now scattered in cities and country areas throughout Australia. The process of their incorporation into the Australian social structure is a matter of considerable practical importance, because their incorporation is still very far from complete, and because this experience should presumably provide a useful guide for official policy and the behaviour of individuals and private groups towards the new arrivals who continue to settle in this country under a variety of schemes. But this unprecedented influx of Europeans also allows the sociologies to pursue further the theoretical problem of the process of assimilation. The present study was designed as a contribution to the understanding of this problem. Because little sociological material was available, either on the general position of immigrants in this country, or on the Displaced Persons in particular, no attempt was made in advance to formulate rigid hypotheses. The study was, rather, an exploratory one, designed to analyse the relation between the immigrant’s social background. His social relations in this country both with other immigrants and with Australia (social assimilation)...

Australian immigration and migrant assimilation 1945 to 1960.

Kokegei, Kristy Ann
Fonte: Universidade de Adelaide Publicador: Universidade de Adelaide
Tipo: Tese de Doutorado
Publicado em //2013
Relevância na Pesquisa
37.02%
In 1947 Australia embarked on a large scale immigration program that resulted in the settlement of over 1 million migrants over the next 15 years. The grandiose nature of this program and its ideological underpinnings of migrant assimilation dominate this period of Australian immigration history. The orthodox perception of this often referred to but surprisingly under-researched policy is that it was a dogmatic drive for migrant assimilation into the existing Australian culture. How, then, does the nation come to accept these immigrants and transform itself into a celebrated multicultural state in the space of the next 30 years? This thesis contends that Australia’s postwar policy of migrant assimilation is more nuanced than this perception allows. If we accept that the ostensibly uncompromising rhetoric of assimilation defined the migrant experience, this will lead to a skewed understanding of what was actually transpiring at this crucial transitional moment in Australia’s immigration history. This thesis argues that the implications of postwar migrant assimilation policy cannot be understood without examining government and grass roots initiatives towards migrant settlement. By examining both government and community responses to the policy of assimilation...

Integration as a Catalyst for Assimilation

Stark, Oded; Jakubek, Marcin
Fonte: Universidade de Tubinga Publicador: Universidade de Tubinga
Tipo: ResearchPaper
EN
Relevância na Pesquisa
36.83%
We draw a distinction between the social integration and economic assimilation of migrants, and study an interaction between the two. We define social integration as blending into the host country’s society, and economic assimilation as acquisition of human capital that is specific to the host country’s labor market. We show that a non-integrated migrant finds it optimal to acquire a relatively limited quantity of human capital; with fellow migrants constituting his only comparison group, a non-integrated migrant does not have a relative deprivation-based incentive to close the income gap with the natives. However, when a migrant is made to integrate, his social proximity to the natives exposes him to relative deprivation, which in turn prompts him to form more destination-specific human capital in order to increase his earnings and narrow the income gap with the natives. In this way, social integration becomes a catalyst for economic assimilation.

Wage assimilation : migrants versus natives and foreign migrants versus internal migrants

STRØM, Steinar; VENTURINI, Alessandra; VILLOSIO, Claudia
Fonte: Instituto Universitário Europeu Publicador: Instituto Universitário Europeu
Tipo: Trabalho em Andamento Formato: application/pdf; digital
EN
Relevância na Pesquisa
36.94%
The paper wants to understand the assimilation pattern of foreign migrants in Italy. Three novelties characterize this study. First, the research compares the wage assimilation of international migrants with both internal migrants and local natives in Italy, a country with substantial internal and international migration. This comparison, never exploited before, provides indirect evidence for the role played by language and knowledge of social capital in the assimilation of foreign migrants relative to both natives and internal migrants. Second, we inquired into the possible causes of under-assimilation by controlling for the date of entry and migrant sector concentration. Third, we model new corrections of the selection bias due to return migration. The correction for the selection bias is introduced in the wage equation through a duration extension of the traditional Heckman correction term and alternatively through a hazard rate correction. The empirical test uses the Italian administrative dataset on dependent employment (WHIP), to estimate a fixed effect model for the weekly wages of males aged 18-45 with controls for selection in return migration and unobserved heterogeneity. The three groups of workers start their careers at the same wage level. But...

Dreams and nightmares of a 'White Australia' : the discourse of assimilation in selected works of fiction from the 1950s and 1960s

Elder, Catriona
Fonte: Universidade Nacional da Austrália Publicador: Universidade Nacional da Austrália
Tipo: Thesis (PhD); Doctor of Philosophy (PhD)
EN
Relevância na Pesquisa
37.06%
This thesis is an analysis of the production of assimilation discourse, in terms of Aboriginal people’s and white people’s social relations, in a small selection of popular fiction texts from the 1950s and 1960s. I situate these novels in the broader context of assimilation by also undertaking a reading of three official texts from a slightly earlier period. These texts together produce the ambivalent white Australian story of assimilation. They illuminate some of the key sites of anxiety in assimilation discourses: inter-racial sexual relationships, the white family, and children and young adults of mixed heritage and land ownership. The crux of my argument is that in the 1950s and early 1960s the dominant cultural imagining of Australia was as a white nation. In white discourses of assimilation to fulfil the dream of whiteness, the Aboriginal people – the not-white – had to be included in or eliminated from this imagined white community. Fictional stories of assimilation were a key site for the representation of this process, that is, they produced discourses of ‘assimilation colonization’. The focus for this process were Aboriginal people of mixed ancestry, who came to be represented as ‘the half-caste’ in assimilation discourse. The novels I analyse work as ‘conduct books’. They aim to shape white reactions to the inclusion of Aboriginal people...

ASSIMILATION THROUGH INCARCERATION: THE GEOGRAPHIC IMPOSITION OF CANADIAN LAW OVER INDIGENOUS PEOPLES

Jacobs, Madelaine Christine
Fonte: Quens University Publicador: Quens University
Tipo: Tese de Doutorado
EN; EN
Relevância na Pesquisa
36.89%
The disproportionate incarceration of indigenous peoples in Canada is far more than a socio-economic legacy of colonialism. The Department of Indian Affairs (DIA) espoused incarceration as a strategic instrument of assimilation. Colonial consciousness could not reconcile evolving indigenous identities with projects of state formation founded on the epistemological invention of populating idle land with productive European settlements. The 1876 Indian Act instilled a stubborn, albeit false, categorization deep within the structures of the Canadian state: “Indian,” ward of the state. From “Indian” classification conferred at birth, the legal guardianship of the state was so far-reaching as to make it akin to the control of incarcerated inmates. As early iterations of the DIA sought to enforce the legal dominion of the state, “Indians” were quarantined on reserves until they could be purged of indigenous identities that challenged colonial hegemony. Reserve churches, council houses, and schools were symbolic markers as well as practical conveyors of state programs. Advocates of Christianity professed salvation and taught a particular idealized morality as prerequisites to acceptable membership in Canadian society. Agricultural instructors promoted farming as a transformative act in the individual ownership of land. Alongside racializing religious edicts and principles of stewardship...

A NULL CONTROLLABILITY DATA ASSIMILATION METHODOLOGY APPLIED TO A LARGE SCALE OCEAN CIRCULATION MODEL

Osses, Axel; Puel, Jean Pierre; García, Galina C.
Fonte: CAMBRIDGE UNIV PRESS Publicador: CAMBRIDGE UNIV PRESS
Tipo: Artículo de revista
EN
Relevância na Pesquisa
36.83%
Artículo de publicación ISI; Data assimilation refers to any methodology that uses partial observational data and the dynamics of a system for estimating the model state or its parameters. We consider here a non classical approach to data assimilation based in null controllability introduced in [Puel, C. R. Math. Acad. Sci. Paris 335 (2002) 161-166] and [Puel, SIAM J. Control Optim. 48 (2009) 1089-1111] and we apply it to oceanography. More precisely, we are interested in developing this methodology to recover the unknown final state value (state value at the end of the measurement period) in a quasi-geostrophic ocean model from satellite altimeter data, which allows in fact to make better predictions of the ocean circulation. The main idea of the method is to solve several null controllability problems for the adjoint system in order to obtain projections of the final state on a reduced basis. Theoretically, we have to prove the well posedness of the involved systems associated to the method and we also need an observability property to show the existence of null controls for the adjoint system. To this aim, we use a global Carleman inequality for the associated velocity-pressure formulation of the problem which was previously proved in [Fernandez-Cara et al....

Food ingestion and assimilation by Hyaie media (Dana, 1853) (Crustacea - Amphipoda)

Tararam, Airton Santo; Mesquita, Hilda de Souza Lima; Wakabara, Yoko; Peres, Clóvis A.
Fonte: Universidade de São Paulo. Instituto Oceanográfico Publicador: Universidade de São Paulo. Instituto Oceanográfico
Tipo: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion; ; Formato: application/pdf
Publicado em 01/06/1990 ENG
Relevância na Pesquisa
36.94%
No presente estudo foram analisados em laboratório, sob temperaturas de inverno e verão, aspectos quantitativos da alimentação de Hyale media (Crustacea-Amphipoda), utilizando-se o método gravimetría), aliado ao conteúdo de carbono dos itens alimentares oferecidos. Nos experimentos com temperatura de inverno não foi encontrado diferença significativa nas taxas de assimilação entre os diferentes estádios de desenvolvimento e sexo. Naqueles com temperatura de verão as taxas de assimilação para fêmeas ovígera e não ovígera foram maiores que aquelas encontradas para machos adulto e jovem. As variações encontradas nas taxa e eficiência de assimilação foram explicadas pelo efeito diferencial da temperatura sobre a taxa de crescimento específico e condições fisiológicas de cada estádio de desenvolvimento.; The feeding of Hyale media was analysed under laboratory conditions in winter and summer temperatures. The results showed that assimilation rates increased following food ingestion rates and decreased when egestion rates increased. In winter temperatures no significant differences were found in the assimilation rates among developmental stages and sexes. In summer temperatures assimilation rates for ovigerous and non-ovigerous females were higher than those found for adult and young males. Although not statistically analysed...

Understanding the Coupled Surface-Groundwater System from Event to Decadal Scale using an Un-calibrated Hydrologic Model and Data Assimilation

Tao, Jing
Fonte: Universidade Duke Publicador: Universidade Duke
Tipo: Dissertação
Publicado em //2015
Relevância na Pesquisa
37.02%

In this dissertation, a Hydrologic Data Assimilation System (HDAS) relying on the Duke Coupled surface-groundwater Hydrology Model (DCHM) and various data assimilation techniques including EnKF (Ensemble Kalman Filter), the fixed-lag EnKS (Ensemble Kalman Smoother) and the Asynchronous EnKF (AEnKF) was developed to 1) investigate the hydrological predictability of precipitation-induced natural hazards (i.e. floods and landslides) in the Southern Appalachians in North Carolina, USA, and 2) to characterize the seasonal (wet/dry) and inter-annual variability of surface-groundwater interactions with implications for water resource management in the Upper Zambezi River Basin (UZRB) in southern Africa. The overarching research objective is to improve hydrologic predictability of precipitation-induced natural hazards and water resources in regions of complex terrain. The underlying research hypothesis is that hydrologic response in mountainous regions is governed by surface-subsurface interaction mechanisms, specifically interflow in soil-mantled slopes, surface-groundwater interactions in recharge areas, and wetland dynamics in alluvial floodplains at low elevations. The research approach is to investigate the modes of uncertainty propagation from atmospheric forcing and hydrologic states on processes at multiple scales using a parsimonious uncalibrated hydrologic model (i.e. the DCHM)...

Characterization of assimilation process in Brazilian Portuguese; Caracterización de los procesos de asimilación en portugués brasileño; Caracterização dos processos assimilatórios no português brasileiro

Magalhães, José; UFU - Uberlândia, Brasil
Fonte: Programa de Pós-Graduação em Linguística - UFSC Publicador: Programa de Pós-Graduação em Linguística - UFSC
Tipo: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion; ; ; ; ; avaliado por pares; Formato: application/pdf
Publicado em 07/06/2014 POR
Relevância na Pesquisa
37%
The main purpose of this paper is to describe and map the existing assimilation phenomena in Brazilian Portuguese, showing data that support this mapping in order to certify that in this language, assimilation processes occur both from right to left (regressive assimilation) and from left to right (progressive assimilation). We aim to show also that progressive assimilation involving voicing/devoicing often requires that the target is a consonant [+voiced]. Finally, we also treat cases of assimilation involving vowels, which seem to occur bidirectionally.; El propósito principal de este artículo es describir y caracterizar los fenómenos de asimilación presentes en el portugués brasileño, dando a luz datos que apoyan este mapeo con el fin de certificar que los procesos de asimilación ocurren tanto de derecha a izquierda (asimilación regresiva) cuanto de izquierda a derecha (asimilación progresiva). Trataremos de mostrar también que la asimilación de sonoridad progresiva que abarca vozeamento/desvozeamento con frecuencia exige que el objetivo sea una consonante [+sonora]. Por último, también trataremos de los casos de asimilación que abarcan vocales que parecen ocurrir de manera bidireccional.; http://dx.doi.org/10.5007/1984-8412.2014v11n1p97O objetivo principal deste artigo é descrever e mapear os fenômenos assimilatórios presentes no português brasileiro...