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Machine learning algorithm partially reconfigured on FPGA for an image edge detection system

Journal of Electronic Science and Technology 2024年第2期22卷 48-68页

作者： Gracieth Cavalcanti Batista Johnny Oberg Osamu Saotome Haroldo F.de Campos Velho elcio hideiti shiguemori Ingemar Soderquist Division of Electronic and Embedded Systems KTH Royal Institute of TechnologyStockholm 16440Sweden Electronic Engineering Division Aeronautics Institute of TechnologySao Josédos Campos SP 12228-900Brazil Laboratory of Applied Computing and Mathematics National Institute for Space ResearchSao Josédos Campos SP 12227-900Brazil Department of C4ISR Institute of Advanced StudiesSao Josédos Campos SP 12228-001Brazil Saab AB Linkoping 58188Sweden

Unmanned aerial vehicles(UAVs)have been widely used in military,medical,wireless communications,aerial surveillance,*** key topic involving UAVs is pose estimation in autonomous navigation.A standard procedure for this process is to combine inertial navigation system sensor information with the global navigation satellite system(GNSS)***,some factors can interfere with the GNSS signal,such as ionospheric scintillation,jamming,or *** alternative method to avoid using the GNSS signal is to apply an image processing approach by matching UAV images with georeferenced *** a high effort is required for image edge *** a support vector regression(SVR)model is proposed to reduce this computational load and processing *** dynamic partial reconfiguration(DPR)of part of the SVR datapath is implemented to accelerate the process,reduce the area,and analyze its granularity by increasing the grain size of the reconfigurable *** show that the implementation in hardware is 68 times faster than that in *** architecture with DPR also facilitates the low power consumption of 4 mW,leading to a reduction of 57%than that without *** is also the lowest power consumption in current machine learning hardware ***,the circuitry area is 41 times *** with Gaussian kernel shows a success rate of 99.18%and minimum square error of 0.0146 for testing with the planning *** system is useful for adaptive applications where the user/designer can modify/reconfigure the hardware layout during its application,thus contributing to lower power consumption,smaller hardware area,and shorter execution time.

关键词： Dynamic partial reconfiguration(DPR) Field programmable gate array(FPGA)implementation Image edge detection Support vector regression(SVR) Unmanned aerial vehicle(UAV) pose estimation

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Hawking radiation received at infinity in higher dimensional Reissner-Nordstrom black hole spacetimes

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Chinese Physics C 2021年第8期45卷 182-189页

作者： Kai Lin Wei-Liang Qian Xilong Fan Bin Wang elcio Abdalla Hubei Subsurface Multi-scale Imaging Key Laboratory Institute of Geophysics and GeomaticsChina University of GeosciencesWuhan 430074China Escola de Engenharia de Lorena Universidade de Sao Paulo12602-810LorenaSPBrazil Center for Gravitation and Cosmology College of Physical Science and TechnologyYangzhou UniversityYangzhou 225009China Faculadade de Engenharia de Guaratingueta Universidade Estadual PaulistaGuaratinguetaSPBrazil School of Physics and Technology Wuhan UniversityWuhan 430072China Instituto de Fisica Universidade de Sao PauloSao PauloBrazil

In this study,we investigate the Hawking radiation in higher dimensional Reissner-Nordstrom black holes as received by an observer located at *** frequency-dependent transmission rates,which deform the thermal radiation emitted in the vicinity of the black hole horizon,are evaluated *** addition to those in four-dimensional spacetime,the calculations are extended to higher dimensional Reissner-Nordstrom metrics,and the results are observed to be sensitive to the spacetime dimension to an ***,we observe that the transmission coefficient practically vanishes when the frequency of the emitted particle approaches *** increases with frequency and eventually saturates to a certain *** four-dimensional spacetime,the above result is demonstrated to be mostly independent of the metric's parameter and the orbital quantum number of the particle,when the location of the event horizon,rh,and the product of the charges of the black hole and the particle qQ are ***,for higher-dimensional scenarios,the convergence becomes more ***,the difference between states with different orbital quantum numbers is observed to be more *** the magnitude of the product of charges qQ becomes more significant,the transmission coefficient exceeds *** other words,the resultant spectral flux is amplified,which results in an accelerated process of black hole *** relationship of the calculated outgoing transmission coefficient with existing results on the greybody factor is discussed.

关键词： Hawking radiation Reissner-Nordstrom black hole superradiation

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The AdS_(5)×S^(5) Fermionic Model

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Journal of Modern Physics 2014年第6期5卷 483-487页

作者： elcio Abdalla Antonio Lima-Santos Instituto de Fisica Universidade de Sao PauloSao PauloBrazil Departamento de Fisica Universidade Federal de Sao CarlosSao CarlsoBrazil

We consider the AdS5 × S5 integrable model. As it turns out, relying on well known arguments, we claim that the conformally invariant fermionic model is solvable, the resulting solution given in terms of two current ... 详细信息

关键词： Component Formatting Style Styling Insert

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Study of Succinic Acid Production by Actinobacillus Succinogenes

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Journal of Life Sciences 2010年第5期4卷 1-8页

作者： elcio Ribeiro Borges Ludmylla Bastos Rocha de Souza Nei Pereira Junior Center of Technology School of Chemistry Federal University of Rio de Janeiro Rio de Janeiro 21949-900 Brazil

Succinic acid has recently emerged as an important chemical （commodity） because it can be used for the manufacturing of synthetic resins and biodegradable polymers and as an intermediate for chemical synthesis. Till date, succinic acid is mainly produced by chemical processes, however, due to the environmental concerns and the concepts of sustainability, researches are directed towards the production of succinic acid by microbial fermentation. The fact that carbon dioxide （CO2） is needed by the microorganisms for succinic acid production is another interesting feature. The fermentation was carried out with Actinobacillus succinogenes using a two-level fractional factorial design 2sl. The variables analyzed and their levels were： concentration of glucose, yeast extract, temperature, pH and agitation. The results show that the variables that more influenced on succinic acid production were pH, temperature and yeast extract.

关键词： Organic acids Actinobacillus succinogenes fermentation carbon dioxide

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培育应对21世纪气候变化的“聪明”作物

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湖南农业科学 2013年第8期 36-38页

作者： Chikelu Mba elcio P Guimaraes Kakoli Ghosh 卢红玲朱亚辉刘青山 Plant Genetic Resources and Seeds Team Plant Production and Protection DivisionFood and Agriculture Organization of the United NationsRomeItaly International Centre for Tropical Agriculture CaliColombia 湖南省农业信息与工程研究所长沙师范学校

据联合国粮农组织估计,到2050年,全球粮食需增产超过70%才能满足地球上90亿人口的刚性需求。但是,实现这一增长目标受到了诸多限制:一方面,为解决人口增长带来的食物需求问题,粮食产量年增幅需达到37%以上,而这一问题在贫穷的发展中国... 详细信息

据联合国粮农组织估计,到2050年,全球粮食需增产超过70%才能满足地球上90亿人口的刚性需求。但是,实现这一增长目标受到了诸多限制:一方面,为解决人口增长带来的食物需求问题,粮食产量年增幅需达到37%以上,而这一问题在贫穷的发展中国家尤为突出。另一方面,强降水、热浪、海平面升高等现象在世界多地发生,产生了洪水、干旱、盐碱化等严重后果,这些极端天气频发严重制约了粮食的持续增产,继而威胁到全

关键词：作物作物品种亲缘种气候变化气候变动

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