UAV-Multispectral Sensed Data Band Co-Registration Framework

Precision farming has greatly benefited from new technologies over the years. The use of multispectral and hyperspectral sensors coupled to Unmanned Aerial Vehicles (UAV) has enabled farms to monitor crops, improve the use of resources and reduce costs. Despite being widely used, multispectral images present a natural misalignment among the various spectra due to the use of different sensors. The variation of the analyzed spectrum also leads to a loss of characteristics among the bands which hinders the feature detection process among the bands, which makes the alignment process complex. In this work, we propose a new framework for the band co-registration process based on two premises: i) the natural misalignment is an attribute of the camera, so it does not change during the acquisition process; ii) the speed of displacement of the UAV when compared to the speed between the acquisition of the first to the last band, is not sufficient to create significant distortions. We compared our results with the ground-truth generated by a specialist and with other methods present in the literature. The proposed framework had an average back-projection (BP) error of 0.425 pixels, this result being 335% better than the evaluated frameworks.CAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível SuperiorDissertação (Mestrado)A agricultura de precisão se beneficiou muito das novas tecnologias ao longo dos anos. O uso de sensores multiespectrais e hiperespectrais acoplados aos Veículos Aéreos Não Tripulados (VANT) permitiu que as fazendas monitorassem as lavouras, melhorassem o uso de recursos e reduzissem os custos. Apesar de amplamente utilizadas, as imagens multiespectrais apresentam um desalinhamento natural entre os vários espectros devido ao uso de diferentes sensores. A variação do espectro analisado também leva à perda de características entre as bandas, o que dificulta o processo de detecção de atributos entre as bandas, o que torna complexo o processo de alinhamento. Neste trabalho, propomos um novo framework para o processo de alinhamento entre as bandas com base em duas premissas: i) o desalinhamento natural é um atributo da câmera, e por esse motivo ele não é alterado durante o processo de aquisição; ii) a velocidade de deslocamento do VANT, quando comparada à velocidade entre a aquisição da primeira e a última banda, não é suficiente para criar distorções significativas. Os resultados obtidos foram comparados com o padrão ouro gerado por um especialista e com outros métodos presentes na literatura. O framework proposto teve um back-projection error (BP) de 0, 425 pixels, sendo este resultado 335% melhor aos frameworks avaliados

Data-flow-based evolutionary fault localization

Fault localization is the activity of precisely indicating the faulty commands in a buggy program. It is known to be a highly costly and tedious process. Automating this process has been the goal of many studies, showing it to be a challenging problem. The coveragespectrum based approaches commonly apply heuristics grounded on the execution of control-flow components to calculate the odds of each program element to be the defective one. The present study aims to investigate another source of fault information by assessing how data-flow analysis are useful to compute suspiciousness scores; and how the combination of scores from different sources impacts fault localization. We present an approach to calculate the suspiciousness score for each program command by using the execution of data-flow components. Then we use an evolutionary algorithm to search sets of weights to combine heuristics from distinct sources of fault data (both control-flow and data-flow as well as a hybrid strategy). The approach was applied in programs with seeded faults and real faults and evaluated by using absolute metrics to asses its efficacy to locate faults. Furthermore, we introduce a new metric to investigate the dependence of tie-break strategies in building the ranking of suspicious commands. Data-flow based methods demonstrate high effectiveness but increase the need for tie-breaks, unlike the evolutionary hybrid method that keeps competitive the effectiveness and depends less on tie-break strategies

Squamous cell carcinoma of mammary gland in domestic cat

Background: In the feline species, 80% to 93% of neoplasias in the mammary gland are malignant, being the majority carcinomas. Among them, there is the mammary squamous cell carcinoma, which amounts to a very rare neoplasm in the domestic cat, with considerable potential for malignancy. This study aimed to report a case of squamous cell mammary carcinoma in the feline species. Case: A female cat, mixed breed, ten years old, presented history of skin lesion. The cat had been spayed two years before, but with previous administration of contraceptives. At the physical examination, it was observed ulcer between the caudal abdominal mammary glands. The occurrence of skin or mammary neoplasia was conceived. The following complementary tests were requested: complete blood count, serum biochemical profi le (renal and hepatic), chest radiographs, abdominal ultrasound, and incisional biopsy of the ulcerated region periphery, followed by classic histopathology. The lesion histopathology was compatible with squamous cell carcinoma of the mammary gland. Due to such a diagnosis, bilateral mastectomy was recommended. The material obtained during the surgical procedure was sent for anatomopathological analysis. Microscopically, surgical margins infi ltration and a regional lymph node were verifi ed. The owner was advised of the need for complementary therapies and medical monitoring of the cat. However, there was no return. It is noteworthy that the animal’s physical and laboratory examinations showed no neoplasia in other regions, being the squamous cell carcinoma of the mammary gland considered primary.\ud Discussion: The malignant mammary neoplasia genesis in feline species, in general, seems to be related to steroid hormones. The ovariectomized females are less likely to develop the disease when compared to intact cats, but there is no protective effect of surgery on those spayed after two years of age regarding the appearance of the neoplasia. Thus, at the time the reported patient was ovariectomized, this effect no longer occurred. The synthetic progestins regularly used to prevent estrus increase by three times the risk of breast carcinomas onset. In humans, there is no clear defi nition of the etiology and pathogenesis of mammary squamous cell carcinoma. However, it has been suggested its association with extreme forms of squamous metaplasia present in pre-existing mammary adenocarcinoma, besides cysts, chronic infl ammations,\ud abscesses and mammary gland adenofi bromas. In a hypothetical way, this etiology could also be related to the feline mammary carcinoma, although, for the case at issue, the exogenous and endogenous hormonal infl uence should not be excluded. It has been reported that mammary squamous cell carcinomas in cats are classifi ed in grades II and III (ie, moderately and poorly differentiated, respectively). Thus, they are considered tumors with more unfavorable prognosis. However, the monitoring of the clinical course, in order to evaluate possible recurrence of the neoplasia and metastases to distant sites, was not possible as the animal under discussion did not return. The squamous cell carcinoma is the most common skin tumor in feline species, despite the primary location in the mammary gland. It is, therefore, important to differentiate squamous cell carcinoma originated in the breast from histological types derived from skin. The description of this special and rare feline mammary carcinoma is important due to its particular characteristics and potential for malignancy

On the occurrence of Mesophyllum expansum (Philippi) Cabioch et Mendoza (Melobesioideae, Corallinales, Rhodophyta) in the Mediterranean, the Canary Isles and the Azores.

Copyright © 2010 by Walter de Gruyter.We reviewed literature records, examined herbarium specimens and studied new collections referred to as Mesophyllum lichenoides from the Mediterranean and the North Atlantic, and report for the first time the presence of Mesophyllum expansum in the Canaries and the Azores. Both gametophytes and tetrasporophytes of M. expansum occur in the Canaries, while we found only tetrasporophytes (and sterile thalli) of the species in all other regions. We further consider the presence of M. lichenoides further south than Atlantic France in need of confirmation. A comparative study between these two species points to the number of rosette cells as the most reliable and easily diagnosed character, M. expansum most often having 911 and M. lichenoides 68 cells

Paulo Freire, mais do que nunca, incontornável e imprescindível

O que justificaria a escrita de uma biografia sobre Paulo Freire 22 anos após seu falecimento e 51 anos depois da publicação de seu mais importante livro, “Pedagogia do Oprimido”? Já temos estudos biográficos do eminente educador pernambucano, a exemplo dos trabalhos de Moacir Gadotti (1996), Maria José Vale (2005), de Carlos Rodrigues Brandão (2005), de Tom Wilson, Peter Park e Anaida Cólon-Muñiz (2010), além da profunda elegia histórica escrita por sua companheira de últimos anos, Ana Maria de Araújo Freire (2005). O que traz como novidade, o estudo de Walter Kohan (2019), “Paulo Freire, mais do que nunca: uma biografia filosófica”

Marketing de serviços: a servitização aplicada na indústria aeronáutica de asas rotativas

O presente estudo buscou analisar a possibilidade de aplicação de modelos de servitização na indústria brasileira de asas rotativas, bem como conhecer os possíveis ganhos obtidos a partir da implementação destes modelos pelas empresas estudadas. Para realização do trabalho foi efetuada análise dos programas de serviços ofertados pelas empresas selecionadas para composição do objeto de estudo. As informações foram obtidas nos sítios eletrônicos destas empresas. Após a análise dos programas de serviço foi percebido que ambas as empresas criaram uma oferta de um terceiro produto que aglutina fornecimento de bens e prestação de serviços. Este movimento se alinha com as definições de servitização estabelecidas pelos autores do tema, logo é possível a aplicação de modelos de servitização na indústria de asas rotativas. Também foram percebidos ganhos para as empresas após a aplicação destes modelos como Satisfação do cliente, adição de valor, previsibilidade de receitas e antecipação de receitas

Os acordos de leniência no processo administrativo brasileiro nas infrações licitatórias e de corrupção

O trabalho monográfico busca apresentar o instituto dos acordos de leniência e para isto tece alguns comentários sobre o conceito de corrupção e sobre o surgimento de uma norma de leniência à luz das influências internacionais. Trata ainda dos requisitos, pressupostos, autoridade competente e algumas outras colocações a respeito deste recente mecanismo. Traz visões distintas de autores que tratam do tema, apresenta críticas ao modelo escolhido pelo Brasil, inclusive com uma opinião do doutrinador Guilherme de Souza Nucci, da área criminal. Além de abordar os crimes licitatórios e as infrações de corrupção administrativa, esclarece como se dá a aplicação destes acordos numa perspectiva processual. Conclui-se que o acordo de leniência se utiliza da cooperação de pessoas jurídicas privadas envolvidas no ato ilegal para colher o máximo de provas possíveis, com o intuito de desvendar casos complexos de ilicitudes administrativas e punir o maior número de envolvidos possível. É importante ressaltar que todo este corpo teórico que surge com esta possibilidade de cooperação representa uma novidade no ordenamento jurídico brasileiro e uma quebra de paradigma no qual estas passam a ser responsabilizadas por atos ilícitos.https://repositorio.uniceub.br/jspui/retrieve/36548/21304255.pd