Results 1 to 10 of about 2,639,560 (316)
Revista economica do Nordeste, 2016 Apresenta a evolução do crescimento da produção dos principais grãos brasileiros, que são arroz, feijão, milho, soja, sorgo e trigo, entre os estados brasileiros, por meio do shift-share.
Gláucia de Almeida Padrão +2 more
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Frontiers in Plant Science, 2023 The rapid increase in population growth under changing climatic conditions causes drought stress, threatening world food security. The identification of physiological and biochemical traits acting as yield-limiting factors in diverse germplasm is pre ...
Abdul Ghaffar +14 more
doaj +2 more sources
Identifying Editions of the Ptolemy of Rome Maps (1478/90–1507/08) by Copper Plates Changes [PDF]
ISPRS International Journal of Geo-InformationTraditionally, it has been considered that the Ptolemaic or classical maps from the four editions of Ptolemy’s Geography published in Rome (1478, 1490, 1507, and 1508) are apparently indistinguishable at first glance because they have been printed from ...
Marcos F. Pavo-López +1 more
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Single pulse polarization study of pulsars B0950+08 and B1642-03: micropulse properties and mixing of orthogonal modes [PDF]
Monthly notices of the Royal Astronomical Society, 2023 We present the results of a high-time resolution polarization study of single pulses from pulsars B0950+08 and B1642-03. Single pulses from pulsar B0950+08 sometimes show isolated micropulses without any significant associated subpulse emission ...
Shubham Singh +2 more
semanticscholar +1 more source
Parameter analysis and Reliability Evaluation of Road Traffic Noise Prediction Model for Highway Traffic Noise Evaluation [PDF]
대한환경공학회지, 2022 The purpose of this study is to evaluate the reliability of prediction models(KHTN, RLS-90, CRTN, NMPB-08) that are widely used in road traffic noise analysis.
Jewon Yoon +4 more
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EURO Journal on Computational Optimization, 2020 We developed a gradient-based method to optimize the regularization hyper-parameter, C, for support vector machines in a bilevel optimization framework. On the upper level, we optimized the hyper-parameter C to minimize the prediction loss on validation ...
W.e.i. Jiang, Sauleh Siddiqui
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A Survey on Mixed-Integer Programming Techniques in Bilevel Optimization
EURO Journal on Computational Optimization, 2021 Bilevel optimization is a field of mathematical programming in which some variables are constrained to be the solution of another optimization problem. As a consequence, bilevel optimization is able to model hierarchical decision processes.
Thomas Kleinert +3 more
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Diurnal variation in atmospheric pressure in Siedlce in 2001-2022 [PDF]
Acta Scientiarum Polonorum. Formatio Circumiectus, 2023 Aim of the study: Rising and falling atmospheric pressure usually heralds changes in weather conditions such as temperature, air humidity, cloud cover, precipitation, and wind speed.
Elżbieta Radzka +3 more
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Presolving linear bilevel optimization problems
EURO Journal on Computational Optimization, 2021 Linear bilevel optimization problems are known to be strongly NP-hard and the computational techniques to solve these problems are often motivated by techniques from single-level mixed-integer optimization.
Thomas Kleinert +3 more
doaj +1 more source