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Entre os métodos de quantificar as relações entre as plantas e a temperatura do ar, estão os sistemas de unidades térmicas ou graus-dia. Sendo a região Norte Fluminense sem tradição no cultivo da cultura de mamão (Carica papaya L.) e... more
Entre os métodos de quantificar as relações entre as plantas e a temperatura do ar, estão os sistemas de unidades térmicas ou graus-dia. Sendo a região Norte Fluminense sem tradição no cultivo da cultura de mamão (Carica papaya L.) e devido a necessidade de irrigação, é importante que se conheça o comportamento de seu crescimento e desenvolvimento sob estas condições. O objetivo deste trabalho foi estudar o crescimento do mamoeiro em relação a graus-dia e seu efeito na produção, sob diferentes níveis de irrigação nesta região. Montou-se um experimento com a cultivar 'Improved Sunrise Solo 72/12', em um delineamento em blocos casualizados, com sete lâminas de irrigação e três repetições, procurando-se avaliar os parâmetros de crescimento e de produção. Houve interação significativa entre lâminas de irrigação e graus-dia. Modelos polinomiais de 2a e 3a ordem ajustaram significativamente a relação graus-dia X altura de plantas, diâmetro de caule, diâmetro de copa e número de folhas emitidas, para cada lâmina de irrigação. Os parâmetros de crescimento relacionados a graus-dia e aos tratamentos aplicados são indicativos de potencial de produção. A lâmina total de água que promoveu a maior produção de frutos foi de 2.937 mm.
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Simple strategies for producing silver and gold nanoparticles (AgNP and AuNP) along with the corresponding core shell nanoparticles (Au–Ag and Ag–Au) by reduction of the metal salts AgBF4 and HAuCl4 by NaBH4 in water will be presented.... more
Simple strategies for producing silver and gold nanoparticles (AgNP and AuNP) along with the corresponding core shell nanoparticles (Au–Ag and Ag–Au) by reduction of the metal salts AgBF4 and HAuCl4 by NaBH4 in water will be presented. The morphologies of the obtained nanoparticles are determined by the order of addition of reactants. The obtained NPs, with sizes in the range 3–40 nm, are characterized by transmission electronic microscopy (TEM) and UV–Vis absorption spectroscopy, so as to evaluate their qualities. Moreover, a direct electrochemical detection protocol based on a cyclic voltammetry in water solution that involves the use of glassy carbon electrode is also applied to characterize the prepared NPs. The developed NPs and the related electroanalytical method seem to be with interest for future sensing and biosensing applications including DNA sensors and immunosensors.
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Nowadays the European Universities are worried about how to adapt higher education to the new European Higher Education Area, as proposed in the Bologna Magna Charta Universitatum of 1998, and signed by 32 European Education Ministers.... more
Nowadays the European Universities are worried about how to adapt higher education to the new European Higher Education Area, as proposed in the Bologna Magna Charta Universitatum of 1998, and signed by 32 European Education Ministers. One of the key points in this higher education reform was the introduction of new Master’s level curricula. These Masters will look for the professional specialization and they will have to be adapted to the specific skills demanded by the society. This paper presents the results from a cooperation project – funded by the AECI (International Cooperation Spanish Agency) and developed between the University of Seville (Spain) and the Catholic University of Asuncion (Paraguay) – by about the planning of a new master’s level curriculum in digital signal processing (DSP) area, taking into account the Bologna principles and the conclusions obtained by the Career Space Consortium. A scientific method from social science, known as concept mapping techniques, was used to perform this planning. Basically, the idea of concept mapping consists of compiling the opinion from actors belonging to different environments (lecturers, researchers, workers, businessmen, etc.) related to DSP applications. The compiled data were statistically computed to cluster the opinions of the different agents. The result will be a master’s level curricula adapted to the environment requirements and the social settings.
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Nowadays the European Universities are worried about how to adapt higher education to the new European Higher Education Area, as proposed in the Bologna Magna Charta Universitatum of 1998, and signed by 32 European Education Ministers.... more
Nowadays the European Universities are worried about how to adapt higher education to the new European Higher Education Area, as proposed in the Bologna Magna Charta Universitatum of 1998, and signed by 32 European Education Ministers. One of the key points in this higher education reform was the introduction of new Master’s level curricula. These Masters will look for the professional specialization and they will have to be adapted to the specific skills demanded by the society. This paper presents the results from a cooperation project – funded by the AECI (International Cooperation Spanish Agency) and developed between the University of Seville (Spain) and the Catholic University of Asuncion (Paraguay) – by about the planning of a new master’s level curriculum in digital signal processing (DSP) area, taking into account the Bologna principles and the conclusions obtained by the Career Space Consortium. A scientific method from social science, known as concept mapping techniques, was used to perform this planning. Basically, the idea of concept mapping consists of compiling the opinion from actors belonging to different environments (lecturers, researchers, workers, businessmen, etc.) related to DSP applications. The compiled data were statistically computed to cluster the opinions of the different agents. The result will be a master’s level curricula adapted to the environment requirements and the social settings.
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Research Interests: Road safety, Intelligent Transport System, Traffic control, Intelligent Agents, Control Systems, and 14 moreControl system, Literature Review, Intelligent Agent, Artificial Vision, New Technology, Control Application, Design Methodology, Management System, Web Service, Technology Acceptance Model, Road Traffic, Embedded System, Internet, and Information System
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Research Interests: Road safety, Intelligent Transport System, Traffic control, Intelligent Agents, Control Systems, and 14 moreControl system, Literature Review, Intelligent Agent, Artificial Vision, New Technology, Control Application, Design Methodology, Management System, Web Service, Technology Acceptance Model, Road Traffic, Embedded System, Internet, and Information System
This paper proposes to identify strategic groups among franchisors from a big set of franchisor variables. Genetic evolutionary computation was used to reduce a set of variables efficiently, and factor analysis was used to make up the... more
This paper proposes to identify strategic groups among franchisors from a big set of franchisor variables. Genetic evolutionary computation was used to reduce a set of variables efficiently, and factor analysis was used to make up the strategic groups. Franchise 500 was used as database. The results suggest both that the general map of franchisor has changed since Carney and
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Research Interests: Learning Technology, Access Control, Digital Signal Processing, Teaching Methodology, Information and Communication technology, and 14 moreLiterature Review, Computer Based Learning, Laboratory experiment, Learning Management System, Design Methodology, System Development, Web Service, Remote Control, Technology Acceptance Model, Digital Signal Processor, Internet, Web Based Teaching, Information System, and remote laboratory
This paper proposes to identify strategic groups among franchisors from a big set of franchisor variables. Genetic evolutionary computation was used to reduce a set of variables efficiently, and factor analysis was used to make up the... more
This paper proposes to identify strategic groups among franchisors from a big set of franchisor variables. Genetic evolutionary computation was used to reduce a set of variables efficiently, and factor analysis was used to make up the strategic groups. Franchise 500 was used as database. The results suggest both that the general map of franchisor has changed since Carney and
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Research Interests: Learning Technology, Access Control, Digital Signal Processing, Teaching Methodology, Information and Communication technology, and 14 moreLiterature Review, Computer Based Learning, Laboratory experiment, Learning Management System, Design Methodology, System Development, Web Service, Remote Control, Technology Acceptance Model, Digital Signal Processor, Internet, Web Based Teaching, Information System, and remote laboratory
Research Interests: Open Source Software, Virtual Community, Mathematical Modelling, Open Source, Case Study, and 12 moreBusiness Model, Research Excellence Framework, Design Methodology, Online Community, Structural Equation Model, Empirical Study, Community Organization, Social Network Analysis, Typical Development, Internet, Social Network, and Driving force
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A cross-analysis of EU masters' programs and professional profiles in information and communication technology reveals deficiencies in many areas. Reform initiatives are already addressing some of these deficiencies, but work remains.
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Research Interests: Open Source Software, Virtual Community, Mathematical Modelling, Open Source, Case Study, and 12 moreBusiness Model, Research Excellence Framework, Design Methodology, Online Community, Structural Equation Model, Empirical Study, Community Organization, Social Network Analysis, Typical Development, Internet, Social Network, and Driving force
This paper presents a license plate extraction method for gray-scale images, based on a combination of edge statistics and a two-step seeded region growing algorithm. The proposed region growing algorithm uses a dual criterion based on... more
This paper presents a license plate extraction method for gray-scale images, based on a combination of edge statistics and a two-step seeded region growing algorithm. The proposed region growing algorithm uses a dual criterion based on edge density and gray-scale intensity affinity. The proposed method aims at achieving license plate segmentation that fits to the real plate boundaries better than existing methods. The robustness of the method has been tested with experimental results, including examples of low quality or poor-preserved plates and commercial or freight transport vehicles.
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A cross-analysis of EU masters' programs and professional profiles in information and communication technology reveals deficiencies in many areas. Reform initiatives are already addressing some of these deficiencies, but work remains.
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This paper presents a license plate extraction method for gray-scale images, based on a combination of edge statistics and a two-step seeded region growing algorithm. The proposed region growing algorithm uses a dual criterion based on... more
This paper presents a license plate extraction method for gray-scale images, based on a combination of edge statistics and a two-step seeded region growing algorithm. The proposed region growing algorithm uses a dual criterion based on edge density and gray-scale intensity affinity. The proposed method aims at achieving license plate segmentation that fits to the real plate boundaries better than existing methods. The robustness of the method has been tested with experimental results, including examples of low quality or poor-preserved plates and commercial or freight transport vehicles.