1,721,005 research outputs found
Land use and coverage in the municipalities of Rio Claro-SP and Corumbataí-SP
No full textComo parte de importantes Unidades de Conservação, a Área de Preservação Ambiental (APA) Corumbataí-Botucatu-Tejupá e a Piracicaba / Juquerí-Mirim ÁREA-I, os municípios de Rio Claro-SP e Corumbataí-SP fazem parte dessa área de Proteção Ambiental Estadual. As características ambientais dessa região, formada por cuestas basálticas, morros testemunhos, biomas de mata atlântica e cerrado, além da presença do Aquífero Guarani são reconhecidas conforme o Decreto nº 20.960 de 1983 e a Lei nº 7.438 de 1991, que visam preservar áreas de Proteção de Mananciais com alta susceptibilidade ambiental e valor paisagístico e natural. Sendo o Uso e Cobertura da terra, os tipos de cobertura natural ou antrópico (do solo) refletidos e captados pelas imagens de sensoriamento remoto e que correspondem às relações da sociedade com o espaço e o tempo, o presente trabalho teve como objetivo realizar uma análise multitemporal de Uso e Cobertura da terra dos municípios de Rio Claro-SP e Corumbataí-SP, entre 1985 a 2022. Por meio da plataforma MapBiomas, que produz mapeamentos anuais de Uso e Cobertura da terra do Brasil, foi possível analisar por imagens de sensoriamento remoto (Landsat), a mudança de paisagens e como a ocupação urbana e o agronegócio avançaram sobre as áreas de vegetação. Os dados permitiram analisar que o agronegócio ocupa cerca de 80% (60.000 ha) das terras, divididas em Agricultura, Pastagens e Mosaico de Usos. A Cana-de-açúcar aumentou em quase 10.000 hectares e junto a ela outras classes de Uso como a Malha urbana, Mineração e novas culturas, como a Soja, Café e o Citrus. Observa-se que grande parte da região, mesmo fazendo parte da APA mencionada e ainda dentro dela o Horto Florestal em Rio Claro (SP), a mesma perde Florestas e outras áreas de formações naturais para o cultivo da Cana-de-açúcar e Pastagens. Constatou-se que os municípios de Rio Claro-SP e Corumbatai-SP em suas classificações de Uso e Cobertura da terra, encontram-se muito suscetíveis ao avanço do agronegócio.As part of important Protection Areas, the Environmental Preservation Area (APA) Corumbataí-Botucatu-Tejupá and Piracicaba / Juquerí-Mirim AREA-I, the municipalities of Rio Claro-SP and Corumbataí-SP are part of this important area State Environmental Protection. The environmental characteristics of this region, formed by basalt cuestas, testimonial hills, Atlantic forest and cerrado biomes, in addition to the presence of the Guarani Aquifer, are certified by in accordance with Decree nº. 20.960 of 1983 and Law nº. 7.438 of 1991, which aim to protect Watershed Protection areas, which aims to protect regions of high environmental susceptibility and scenic and natural value. Being the Use and Coverage of land, the types of natural or artificial cover (soil) reflected and captured by remote sensing images and which correspond to society's relations with space and time, the present work aimed to carry out an analysis multitemporal mapping of land use and coverage in the municipalities of Rio Claro-SP and Corumbataí-SP, from 1985 to 2022. Using the MapBiomas platform, which produces annual mappings of land use and coverage in Brazil, it was possible to analyze images of remote sensing (Landsat), changing landscapes and how urban occupation and agribusiness have advanced over vegetation areas. The data allowed us to analyze that agribusiness occupies 80% (60.000 ha) of the land, divided into Agriculture, Pastures and Mosaic of Uses. Sugarcane increased by almost 10.000 hectares and along with it other classes of Use such as the Urban Network, Mining and new crops, such as Soy, Coffee and Citrus. It is observed that a large part of the region, even though it is part of the aforementioned APA and also within it the Horto Florestal – Rio Claro (SP), loses forests and other areas of natural formations for the cultivation of sugar cane and pastures. . It was found that the municipalities of Rio Claro-SP and Corumbatai-SP, in their Land Use and Coverage classifications, are very susceptible to the advancement of agribusiness
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Variations on the Author
Get PDF“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
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Soil characterization and its interrelations with land use in the Ribeirão Jacutinga Watershed - SP
No full textEste estudo tem como objetivo caracterizar os solos da Bacia Hidrográfica do Ribeirão Jacutinga, em Rio Claro (SP), destacando suas propriedades físicas e a interação com os usos da terra. A metodologia foi dividida em três etapas: trabalho de campo, com coleta de amostras de solo em dois pontos específicos e validação de dados por mapeamento no ArcGIS Pro; análise laboratorial, seguindo protocolos do Instituto Agronômico de Campinas (IAC), com ênfase na análise granulométrica e morfológica e revisão bibliográfica, onde a fundamentação teórica deste trabalho analisou a interação entre fatores ambientais e antrópicos, como os usos da terra. Os resultados indicaram a presença de duas classes de solo — Solos Rasos a desenvolvidos (associação Argissolo Acinzentado) e Solos Rasos (associação Neossolo Regolítico) — com variações de textura sob diferentes usos da terra: pastagem e solo exposto. Observou-se que o uso intensivo para pastagens tem compactado os horizontes superficiais, reduzindo a infiltração de água, aumentando o escoamento superficial e favorecendo a erosão hídrica. No solo exposto não foram observados processos erosivos, pois no entorno do ponto tem-se cobertura vegetal diversificada, com o plantio de diversos alimentos. A pesquisa aponta a necessidade de estratégias de manejo adequadas para mitigar os impactos da agropecuária fornecendo subsídios para futuras ações de conservação e recuperação ambiental.This study aims to characterize the soils of the Ribeirão Jacutinga Watershed, located in Rio Claro (SP), highlighting their physical properties and interactions with land use. The methodology was divided into three stages: fieldwork, which involved collecting soil samples at two specific points and validating data through mapping in ArcGIS Pro; laboratory analysis, following the protocols of the Agronomic Institute of Campinas (IAC), focusing on particle size and morphological analysis; and a literature review, which provided the theoretical foundation for this work by analyzing the interaction between environmental and anthropogenic factors, such as land use.The results revealed the presence of two soil classes — Shallow to Developed Soils (Argissolo Acinzentado association) and Shallow Soils (Neossolo Regolítico association) — with texture variations under different land uses: pasture and exposed soil. Intensive pasture use was found to compact the surface horizons, reducing water infiltration, increasing surface runoff, and promoting water erosion. In the exposed soil area, no erosive processes were observed, likely due to the surrounding vegetation cover, which included diverse crop cultivation. The study underscores the necessity of implementing proper land management strategies to mitigate the impacts of agricultural activities, providing a basis for future conservation and environmental restoration efforts
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Vulnerabilidade ambiental aos processos erosivos lineares de parte dos municípios de Marabá Paulista-SP e Presidente Epitácio-SP
No full textNo atual momento histórico, diante das transformações aceleradas das paisagens, em que as dinâmicas da sociedade se interpenetram e, muitas vezes, se sobressaem às dinâmicas da natureza, a questão ambiental assume importância em vários campos do conhecimento, sobretudo, na Geografia. Em meio aos diversos trabalhos desenvolvidos no âmbito geográfico e ambiental, tem-se a erosão como um dos assuntos mais enfatizados. Neste contexto, o objetivo geral da tese foi analisar os principais elementos que influenciam na vulnerabilidade ambiental aos processos erosivos lineares (sulcos, ravinas e voçorocas) de parte dos municípios de Marabá Paulista-SP e Presidente Epitácio-SP. Sob a perspectiva teórico-metodológica do pensamento da complexidade, foram caracterizados os aspectos do relevo, declividade, solos, substrato rochoso, cobertura vegetal, curvatura da superfície e uso da terra, além da elaboração de documentos cartográficos em ambiente de Sistemas de Informação Geográfica, em especial, o mapa de vulnerabilidade ambiental aos processos erosivos lineares. Em virtude das possibilidades de integração dos dados e atribuição de pesos, o referido mapa foi realizado a partir da lógica fuzzy, especificamente, da Técnica do Processo Analítico Hierárquico (AHP), a qual proporcionou o mapeamento de maneira classificada: baixa (0.32%), média (65.15%), alta (34.45%) e muito alta vulnerabilidade (0.08%). A baixa vulnerabilidade está elencada às matas ciliares remanescentes. A média vulnerabilidade se localiza nos topos das colinas com declividades inferiores a 5%. O uso da terra predominante é a pastagem e os solos são, em sua maioria, desenvolvidos e arenosos. A alta vulnerabilidade está, principalmente, nas vertentes convexas e retilíneas, em que as inclinações podem alcançar 15%. A pastagem prevalece, todavia, verificou-se a expansão do cultivo de cana de açúcar e do solo exposto para seu consecutivo plantio. A muito alta vulnerabilidade apresenta-se nas vertentes côncavas, cuja curvatura favorece a convergência das águas pluviais e, portanto, o fluxo linear. Tal evento se intensifica perante às declividades acentuadas – superiores a 20% para a região. Combinado a estes atributos, sobre solos rasos tem-se o pastoreio intensivo do gado, o qual acelera a compactação do solo e acarreta a erosão, sendo uma das formas de degradação mais recorrente no Extremo Oeste Paulista. Assim, o presente estudo pode contribuir no sentido de orientar a implantação de medidas preventivas e corretivas de controle à erosão por intermédio do planejamento ambiental.In the current historical moment, given the accelerated changes in landscapes, in which the dynamics of society interpenetrate and, often, exceed the dynamics of nature, the environmental issue assumes importance in several fields of knowledge, especially, Geography. Among the diverse assignments developed in geographical and environmental contexts, erosion is one of the most commonly emphasized subjects. Therefore, this thesis aimed to analyze the main elements that influence environmental vulnerability to linear erosive processes (rills, ravines and gullies) in parts of Marabá Paulista-SP and Presidente Epitácio-SP. From the theoretical-methodological perspective of thought complexity, the relief, slope plans, soils, bedrocks, vegetation, surface curvature and land use aspects were characterized, in addition to the elaboration of cartographic documents using the Geographic Information System, in particular, the map of environmental vulnerability to linear erosive processes. Due to the possibilities of integrating data and assigning weights, the map was performed based on fuzzy sets, specifically, the Analytical Hierarchy Process (AHP), which provided classified mapping: low (0.32%), medium (65.15%), high (34.45%) and very high vulnerability (0.08%). The low vulnerability is identified in the reminiscent cilliary forests. The medium vulnerability is located on the hilltops with slopes of less than 5%. The land use is predominantly for pasture and soils are for the most part developed and sandy. The high vulnerability is primarily the convex and rectilinear aspects, where the slopes can reach 15%. On the prevailing pasture, however, the expansion of the sugar cane crop was found and soil exposed to its successive planting. The very high vulnerability is present in the concave slopes, whose curvature favors the convergence of rainwater and thus, linear flow. This event is intensified towards the steep slopes – more than 20% of the region. Combined with these attributes, on shallow soils there is intensive grazing of livestock, which accelerates soil compaction and leads to erosion, one of the most recurrent means of degradation in the Far West of São Paulo. Thus, the present study may contribute to guiding the management of preventive and corrective measures to control erosion through environmental planning.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES
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