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Spectroscopic Multicomponent Analysis Using Multi-objective Optimization for Variable Selection

Computer Technology and Application 2013年第9期4卷 466-475页

作者： Anderson da Silva Soares Telma Woerle de Lima Daniel Vitor de LuPcena rogerio lopes salvini GustavoTeodoro Laureano Clarimar Jose Coelho Institute of lnformatics Federal University of Goifs Goidnia 74001970 Brazil Computer Science Department Pontifical University Catholic of Goicas Goiania 74605-010 Brazil

The multiple determination tasks of chemical properties are a classical problem in analytical chemistry. The major problem is concerned in to find the best subset of variables that better represents the compounds. These variables are obtained by a spectrophotometer device. This device measures hundreds of correlated variables related with physicocbemical properties and that can be used to estimate the component of interest. The problem is the selection of a subset of informative and uncorrelated variables that help the minimization of prediction error. Classical algorithms select a subset of variables for each compound considered. In this work we propose the use of the SPEA-II （strength Pareto evolutionary algorithm II）. We would like to show that the variable selection algorithm can selected just one subset used for multiple determinations using multiple linear regressions. For the case study is used wheat data obtained by NIR （near-infrared spectroscopy） spectrometry where the objective is the determination of a variable subgroup with information about E protein content （%）, test weight （Kg/HI）, WKT （wheat kernel texture）（%） and farinograph water absorption （%）. The results of traditional techniques of multivariate calibration as the SPA （successive projections algorithm）, PLS （partial least square） and mono-objective genetic algorithm are presents for comparisons. For NIR spectral analysis of protein concentration on wheat, the number of variables selected from 775 spectral variables was reduced for just 10 in the SPEA-II algorithm. The prediction error decreased from 0.2 in the classical methods to 0.09 in proposed approach, a reduction of 37%. The model using variables selected by SPEA-II had better prediction performance than classical algorithms and full-spectrum partial least-squares.

关键词： Multi-objective algorithms variable selection linear regression.

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Does intensity really matter regarding aerobic exercise reductions in wave reflection and central hemodynamics?Commentary on“The effect of acute aerobic exercise on central arterial stiffness,wave reflections,and hemodynamics in adults with diabetes:A randomized cross-over design”by Way et al.

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Journal of Sport and Health Science 2021年第4期10卷 507-509页

作者： Wendell Arthur lopes Joao Carlos Locatelli Caroline Ferraz Simoes rogerio Toshiro Passos Okawa Department of Physical Education Center of Health SciencesState University of MaringaMaringa 87020-900Brazil Postgraduate in Physical Education Program Center of Health SciencesState University of MaringaMaringa 87020-900Brazil Research Group on Systemic Arterial Hypertension Arterial Stiffness and Vascular Aging(GPHARV)Maringa 87020-900Brazil Department of Medicine Center of Health SciencesState University of MaringaMaringa 87020-900Brazil

We read with great interest the study by Way et al.1 published in this journal,which described and compared the acute changes in central arterial stiffness(AS),wave reflections,and central hemodynamics(CH)in response to a bout of high-intensity interval exercise(HIIE)and moderate-intensity continuous exercise(MICE)in adults with *** authors reported a significant reduction in augmentation index(AIx)corrected by a heart rate(HR)of 75 beats/min(AIx@75)and central systolic blood pressure after HIIE,without significant changes in the pulse wave velocity(PWV).In view of this important research topic and our recent contributions to it,we would like to raise some points of discussion that might help to better elucidate the findings observed in the current study,and also suggest pertinent directions to further studies.

关键词： stiffness intensity wave

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Influence of High Dilutions of Cina for the Control of Meloidogyne incognita in Tomato Plants

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American Journal of Plant Sciences 2014年第25期5卷 3695-3701页

作者： Rafael Augusto Swarowsky Jose Renato Stangarlin Odair Jose Kunh rogerio lopes Estevez Thaisa Muriel Mioranza Monica Anghinoni Muller Center of Agricultural Sciences Western Paraná State University—UNIOESTE Marechal Candido Rondon Brazil

Considering the importance of the tomato crop and the high costs for controlling Meloidogyne incognita with resistant cultivar or nematicides, it is necessary for the search of new alternatives to manage the root-knot disease. The homeopathy may be an alternative way of control, by inducing plant resistance. This study aimed to evaluate the influence of the homeopathic product Cina at dynamizations 12, 24, 50, 100, 200, and 400 CH (centesimal hahnemanian dilutions) on the number of root galls, eggs and second-stage juveniles (J2) present in the roots of tomato and soil, as well on the growth of tomato plants. The Cina demonstrated effectiveness in stimulating root development, once the results of root volume were higher in homeopathic treatments than those in the control. Cina 100 CH also favored the growth of the stalk diameter of the plants. However, the homeopathic product showed no nematostatic nor nematicide effects. The potentized Cina is capable to induce tomato growth besides the presence of M. incognita infecting the roots, with no nematotoxic effects.

关键词： Homeopathy High Dilution Root-Knot Nematode Resistance Induction

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Vertical Loads Effects Applied on the Pavement Considering the Variation on Tire Pressure

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Journal of Traffic and Transportation Engineering 2014年第2期2卷 107-115页

作者： Pablo Yugo Yoshiura Kubo Cassio Eduardo Lima de Paiva Adelino Jorge lopes Ferreira Arthur Eduardo de Freitas Larocca Glaucio rogerio Cararo Department of Civil Engineering University of Campinas Campinas 13083-852 Brazil Department of Civil Engineering University of Coimbra Coimbra 3030-788 Portugal Department of Mechanical Engineering Alpha Technical Services Curitiba 80520-590 Brazil Chassis and Vehicle Dynamic Engineering Volvo Group Latin America Curitiba 81290-000 Brazil

The main objective of this paper is to analyse the vertical loads effects applied on the pavement, considering the variation of tire pressure, from a truck＇s front suspension. For the measurements, a durability test track located in Brazil has been used. The tire pressure was increased by l0 psi from 90 psi to 130 psi with a constant load of 6 t on the front suspension, the maximum allowed load for front axle according to Brazilian legislation. By applying relative damage concept, it is possible to conclude that the variation on the tire pressure will not affect significantly the load applied on the pavement. However, it is recommended to repeat the same methodology in order to analyse the influence on the variation of the other quarter car model variants.

关键词： Vertical load pavement relative damage.

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