1,239 research outputs found

    Cooperation between university and industry in the research of the suitability of agile methodologies in software development

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    Choosing a proper approach to manage a software development project is critical to increasing the chances to succeed in the venture. One of the great dilemmas nowadays concerns the option for an Agile or a traditional approach. There are several characteristics of software projects and the business environment in which they are carried out that must be considered while choosing the most appropriate development process. Although Agile development methodologies have been increasingly expanding and consolidating worldwide as an effective way of building software in the last two decades, they are not a one-size-fits-all approach. Knowing when to use Agile and which methodology is most suitable are the great questions that we aimed to answer in this study. In this paper, through a comprehensive revision of the Agile literature and an exploratory study, with the realization of focus group sessions with Agile practitioners and an interview with an Agile expert actively engaged in the software industry, we explored the characteristics of software development projects and organisational environments, identifying those that favour the use of an Agile approach. We also studied the main aspects that lead Agile teams to opt for one of the common Agile frameworks: Scrum, Extreme Programming (XP), Kanban, or Lean Software Development (LSD). The major goal of our study, clarifying the main aspects to be considered in the choice of an Agile methodology, is to support the decision-maker in the process of selecting an appropriate development approach.info:eu-repo/semantics/acceptedVersio

    Análise multiespectral de medidas de complexidade utilizando o software CompPlexus aplicado a dados do sensor ASTER.

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    Neste trabalho, será avaliado a eficiência do software CompPlexus na análise multiespectral de complexidade de alvos distintos utilizando bandas do sensor ASTER ? Advanced Spaceborne Thermal Emission and Reflection Radiometer

    Associação de lodo de esgoto e Clonostachys rosea para a supressão de Botrytis cinerea em restos culturais de roseira.

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    A produção de rosas de corte no estado de São Paulo é uma atividade de importante expressão sócio-econômica. Porém, as perdas devido ao mofo cinzento (Botrytis cinerea Pers.:Fr.) são significativas e levam ao uso intensivo de fungicidas, o que tem causado, entre outros problemas, a contaminação do ambiente e dos aplicadores e a predominância de isolados resistentes do patógeno. O objetivo deste trabalho foi avaliar a supressão da esporulação de B. cinerea em restos culturais de roseira pela associação de Clonostachys rosea (Link: Fr.) Schroers, Samuels, Siefert and W. Gams (ex. Gliocladium roseum Bainier) e matéria orgânica (MO), como alternativa para o manejo da doença. Utilizaram-se lodo de esgoto e composto orgânico a base de lodo e bagaço de cana como fontes de MO. Apesar de não ter havido aumento significativo na taxa de degradação dos restos com a aplicação de MO, verificou-se redução na esporulação de B. cinerea com estes tratamentos. Esta redução foi, provavelmente, devido ao aumento da competição microbiana nos restos, especialmente pela ocorrência de Trichoderma sp. Nos tratamentos com C. rosea em condições controladas, recuperou-se o antagonista dos restos culturais por mais de 70 dias após a inoculação e verificou-se significativa redução da esporulação de B. cinerea. A cobertura dos restos com MO aumentou a sobrevivência de C. rosea e suprimiu a esporulação do patógeno em 70 a 100%, valor superior ao obtido com o antagonista ou as fontes de MO isoladamente (25 a 65%). Quando aplicado no campo, porém, o estabelecimento de C. rosea foi reduzido e proporcionou apenas ligeira redução na esporulação do patógeno. O desenvolvimento e produção de botões florais nas plantas adubadas com NPK, lodo e composto, ou naquelas onde foi aplicado C. rosea, não diferiram significativamente. Os resultados obtidos em condições controladas com o uso associado de C. rosea e MO na supressão de B. cinerea são promissores. Entretanto, é necessário identificar os fatores que afetam a performance do antagonista a campo, de forma a se estabelecer uma estratégia viável do seu uso em cultivos comerciais de roseira

    Assessment of complexity metrics applied to analysis of spectral patterns generated by aster sensor.

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    Landscape metrics are traditionally used in the analysis and search for spatial patterns in complex environmental systems through of establishing numeric relationships between different types of targets on Earth's surface. Under this perspective, remote sensing has had great importance as a tool for data generation, providing several levels of land use and occupancy information isonomically for large areas. For that purpose, remote sensing uses regular pixel matrices (Picture Element) with associated quantitative values (e.g. digital numbers, radiance, reflectance) which constitute a direct measurement of the variation of electromagnetic radiation (EMR) after interaction with the target. The variations in pixel values may be considered in terms of their textural patterns, regarding pixel neighborhood relationships, or spectral patterns, when EMR variations are considered along different wavelengths for a same pixel. Thus, the objective of this work was to assess the results of spectral measurements to different area extensions in images taken by the ASTER sensor, which operates with 9 bands within the visible to shortwave infrared region (0.556 to 2.400 µm) and has a spatial resolution of 15 m. For this purpose, cerrado phytophysiognomies in two hillsides at Jataí Ecological Station, in the city of Luiz Antônio, northeast portion of the state of São Paulo, Brazil, were considered reference targets, and encompassed to its greatest extent the cerradão domain and also "campo sujo" and "cerrado strictu sensu" physiognomies. The metrics used for spectral analyses are based on information entropy: measure (SDL), in which most complexity values are associated to more disorderly patterns; and measure, LMC, which is represent by a convex entropy of function that attributes greater complexity values to patterns located in an intermediate zone between order and disorder. These measures was applied to values extracted from spectral response curve generated by a wavelength X reflectance graphic which represented the target's behavior in different bands of the electromagnetic spectrum. In this work, was used two bands (8 and 9) that emphasize important components of cerrado phytophysiognomies, as lignin and water cell. For each hillside, was analysed three positions: base, medium and top, and each of these position, two spatial scales (150x150m and 75x75m). The results shows that, when taken alone, any measure presented a consistent behavior when compared of different spatial scales and bands used. However, both measures show identical behavior to attribute greater and lesser values of complexity to different positions and spatial scale at the same hillside. This results appoint that its can be used in combined as complementary measures, demonstrating in case LMC measure ? heterogeneity degrees of spectral patterns analysed and, from SDL measure, your respective location along of continuum that have in your extremes, one side, more ordered condition (therefore, more homogeneous) and, in the other extremity, more disordered conditions
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