1,354,928 research outputs found
GARCON - Genetic Algorithm for Rectangular Cuts OptimizatioN.
No full textWe will present Genetic Algorithm for Rectangular Cuts OptimizatioN (GARCON) program and demonstrate its functionality on a simple HEP analysis example. The program automatically performs rectangular cuts optimization and verification for stability in a multi-dimensional cuts phase space. The program has been successfully used by a number of different analyses presented in the Compact Muon Solenoid (CMS collaboration) Physics Technical Design Report (Large Hadron Collider (LHC), CERN, Geneva, Switzerland), corresponding results are also published in a number of papers in 2006
GARCON: Genetic Algorithm for Rectangular Cuts OptimizatioN. User's manual for version 2.0
No full textThis paper presents GARCON program, illustrating its functionality on a simple HEP analysis example. The program automatically performs rectangular cuts optimization and verification for stability in a multi-dimensional phase space. The program has been successfully used by a number of very different analyses presented in the CMS Physics Technical Design Report. The current version GARCON 2.0 incorporates the feedback the authors have received. User's Manual is included as a part of the note.This paper presents GARCON program, illustrating its functionality on a simple HEP analysis example. The program automatically performs rectangular cuts optimization and verification for stability in a multi-dimensional phase space. The program has been successfully used by a number of very different analyses presented in the CMS Physics Technical Design Report. The current version GARCON 2.0 incorporates the feedback the authors have received. User's Manual is included as a part of the note.This paper presents GARCON program, illustrating its functionality on a simple HEP analysis example. The program automatically performs rectangular cuts optimization and verification for stability in a multi-dimensional phase space. The program has been successfully used by a number of very different analyses presented in the CMS Physics Technical Design Report. The current version GARCON 2.0 incorporates the feedback the authors have received. User's Manual is included as a part of the note.This paper presents GARCON program, illustrating its functionality on a simple HEP analysis example. The program automatically performs rectangular cuts optimization and verification for stability in a multi-dimensional phase space. The program has been successfully used by a number of very different analyses presented in the CMS Physics Technical Design Report. The current version GARCON 2.0 incorporates the feedback the authors have received. User's Manual is included as a part of the note
Trabalhando com dados espaciais no QGIS 2.18.4.
No full textO QGIS é um programa computacional que, além de ser um SIG, também permite gerar bancos de dados e fazer tratamentos e análises de dados espaciais. Isso ocorre porque todo SIG permite dispor, em camadas ou planos de informação (PI), vários dados georreferenciados, os quais podem pertencer a diferentes classes (vetoriais, matriciais, alfanuméricos, etc.)
Aplicação do algoritmo SAFER para monitoramento da evapotranspiração nos Biomas brasileiros.
No full textO algoritmo SAFER (Simple Algorithm for Evapotranspiration Retrieving) foi usado para análises da evapotranspiração atual (ET) em larga escala, nas diferentes regiões e biomas no Brasil, através da união de sensoriamento remoto e uma rede de estações meteorológicas, para o ano de 2016. Variações nos valores da ET entre as regiões e biomas foram fortemente detectadas, com taxas médias diárias trimestrais acima 3,0 mm dia-1 na região Sul, com os limites superiores no bioma Pampa, e abaixo de 1,5 mm dia-1 na região Nordeste, com limites inferiores no bioma Caatinga. A modelagem com uso do produto reflectância do satélite MODIS em conjunto com dados climáticos interpolados apresentou aplicabilidade para monitoramento dos fluxos hídricos na escala espacial de 250 m sob distintas condições termo hídricas ao longo do ano.Publicado também em: TEIXEIRA, A. H. DE C.; LEIVAS, J. F.; TAKEMURA, C. M.; GARCON, E. A. M. Aplicação do algoritmo SAFER para monitoramento da evapotranspiração nos Biomas brasileiros. In: ENCONTRO DE RECURSOS HÍDRICOS EM SERGIPE, 23., 2021, Aracaju. Anais... Aracaju: ABRHidro, 2021. Disponível em: https://files.abrhidro.org.br/Eventos/Trabalhos/125/XIII-ENREHSE0068-1-20200306-091437.pdf
The role of mesoscale variability on plankton dynamics in the North Atlantic
No full textThe intensive field observational phase of JGOFS in the North Atlantic Ocean has shown the importance of oceanic mesoscale variability on biogeochemical cycles and on the strength of the ocean biological pump. Mesoscale physical dynamics govern the major time/space scales of bulk biological variability (biomass, production and export). Mesoscale eddies seem to have a strong impact on the ecosystem structure and functioning, but observational evidence is rather limited.
For the signature of the mesoscale features to exist in the ecosystem, the comparison of temporal scales of formation and evolution of mesoscale features and reaction of the ecosystem is a key factor. Biological patterns are driven by active changes in biological source and sink terms rather than simply by passive turbulent mixing. A first modelling assessment of the regional balances between horizontal and vertical eddy-induced nutrient supplies in the euphotic zone shows that the horizontal transport predominates over the vertical route in the subtropical gyre, whereas the reverse holds true for the other biogeochemical provinces of the North Atlantic. Presently, despite some difference in numbers, the net impact of modelled eddies yields an enhancement of the biological productivity in most provinces of the North Atlantic Ocean.
Key issues remaining include variation on the mesoscale of subsurface particle and dissolved organic matter remineralization, improved knowledge of the ecological response to patterns of variability, synopticity in mesoscale surveys along with refining measures of biogeochemical time/space variability.
Eventual success of assimilation of in situ and satellite data, still in its infancy in coupled physical/biogeochemical models, will be crucial to achieve JGOFS synthesis in answering which data are most informative, standing stocks or rates, and which ones are relevant. Depending on which end of the spectrum quantification of the effect of mesoscale features on production and community structure is required, complementary strategies are offered. Either one may choose to increase resolution of models up to the very fine mesoscale features scale (a few kms) for the high end, or to include a parametric representation of eddies for the low end
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
An eddy-permitting coupled physical-biological model of the North Atlantic. Part II: Ecosystem dynamics and comparison with satellite and JGOFS local studies data
No full textA model of biological production in the euphotic zone of the North Atlantic has been developed by coupling a Nitrate, Phytoplankton, Zooplankton, Detritus (NPZD) nitrogen-based ecosystem model with an eddy-permitting circulation model. The upper ocean physical and biological results are presented for an experiment with monthly climatological forcing. A comparison with satellite ocean color data shows that the model is capable of a realistic description of the main seasonal and regional patterns of surface chlorophyll. Agreement is also good for primary production except in the subtropical gyre where the model produces values more than an order of magnitude smaller than derived from satellite observations. In situ data available at Joint Global Ocean Flux Study (JGOFS) time series and local study sites (Bermuda Atlantic Time-series Study (BATS), 32°N, 65°W; North Atlantic Bloom Experiment (NABE), 47°N, 2O°W; EUMELI oligotrophic, 21°N, 31°W) are used for a more detailed analysis of the model's capability to simultaneously reproduce seasonal ecosystem dynamics in different biological provinces of the North Atlantic Ocean. The seasonal cycle of phytoplankton biomass and nitrate is simulated quite realistically at all sites. Main discrepancies between model and observations are a large zooplankton peak, required by the model to end the phytoplankton spring bloom at the 47°N, 20°W site, and the underestimation of primary production at EUMELI and under oligotrophic summer conditions at BATS. The former model deficiency can be related to the neglect of phytoplankton aggregation; the latter is caused by too inefficient recycling of nutrients within the euphotic zone. Model improvements are suggested for further steps toward a realistic basin-wide multiprovinces simulation with a single ecosystem model
Parental gender indifference or persistent sex preferences for children at the turn to the 21st century? A reflection on Pollard and Morgan (2002) with reference to the Swedish case
No full textIn their recent ASR article on the sex composition of previous offspring and third births in the US, Pollard and Morgan (2002) argue that changes in the societal gender system - namely increasing opportunities for women - have lead to a decreasing effect of children´s gender on parents´ fertility decisions. If the authors were right in their conclusions, one should expect to find no sex preferences for children in countries with a high level of gender equality. In this reflection, we exploit population register data for the years 1961 to 1999 to examine the Swedish example. Our results show that even in the fairly gender equal Swedish society, a clear preference for one child of each sex has continued to exist until today.
Variations on the Author
No full text“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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