Matemática acessível: palestras que promovem a contextualização como ferramenta motivadora

 The importance of mathematics in the development of logical thinking and essential skills is undeniable. However, in Brazil, including in the State of São Paulo, indicators of the quality of mathematics learning, obtained in evaluations conducted at the state and national level, remain alarming. Resolving this situation is a key point in promoting the sustainable development of the country. In order to contribute to progress in this regard, at the local level, mathematics lecturers at the Chemistry Institute of UNESP in Araraquara developed an extension project called “Accessible Mathematics for Everyone”. The aim was to give talks in public schools in Araraquara and the wider region, focusing on the teaching of mathematics by means of contextualization, modeling, and problem solving. The intention was to motivate students to study and understand the subject, and to provide the teachers with new approaches to teaching the contents of the discipline, giving greater meaning to them. This article reports on the experience of this project and its first results, which have already been highly positive, especially in terms of encouraging the high school students to deepen their study of mathematics through scientific initiation projects supported by the PIBIC Jr - UNESP/CNPq  program. The partnership established between the lecturers involved in the project and the public schools has contributed to the development of these goals and has helped the high school students to pass the exams for entry to highly regarded public universities.La importancia de la matemática en el desarrollo del pensamiento lógico y las habilidades esenciales en la formación de un ciudadano es incuestionable, en Brasil, especialmente en Sao Paulo, los indicadores de competencia en la disciplina, obtenidos en las evaluaciones llevadas a cabo a nivel estatal, nacional y en todo el mundo, se mantiene en niveles alarmantes. Revertir esta situación es fundamental para promover el desarrollo sostenible del país y con el fin de dar una contribución a este respecto, aunque sólo sea a nivel local, los profesores de matemática del Instituto de Química de la UNESP, Araraquara, desarrollan un proyecto de extensión llamado "matemáticas accesible para todos", que tiene por objeto realizar conferencias en las escuelas públicas de Araraquara y la región, con la propuesta de enseñar matemáticas por medio de la contextualización, la modelación y resolución de problemas. Se espera motivar a los estudiantes para estudiar y comprender la disciplina, y también presentar a los profesores nuevas posibilidades para abordar el contenido, dando significado a los mismos. Este artículo cuenta la experiencia de este proyecto y sus primeros resultados, que ya han demonstrado ser muy positivos, sobre todo al despertar el interés delos estudiantes de secundaria en la promoción de sus estudios en matemáticas por medio de la investigación científica promovidas por el programa PIBIC Jr - UNESP / CNPq. La asociación establecida entre los profesores del proyecto y las escuelas públicas permitió la aplicación de estas directrices y el acceso de los estudiantes a las universidades públicas, por medio de pruebas.A importância da Matemática no desenvolvimento do raciocínio lógico e de habilidades essenciais na formação de um cidadão é inquestionável, porém no Brasil e, em particular no Estado de São Paulo, os indicadores de competência na matéria, obtidos nas avaliações realizadas no âmbito estadual, nacional e mundial, permanecem em níveis alarmantes. Reverter esta situação é fundamental para promover o desenvolvimento sustentável do país e, no intuito de dar alguma contribuição neste sentido, mesmo que somente em nível local, os docentes da área de Matemática do Instituto de Química da UNESP, Câmpus de Araraquara, desenvolvem um Projeto de Extensão denominado “Matemática acessível para todos” que tem por objetivo levar Palestras às escolas públicas de Araraquara e região, focadas na proposta de ensinar Matemática por meio da contextualização, modelagem e resolução de problemas. Espera-se com isso motivar os alunos a estudar e compreender a matéria, assim como apresentar aos docentes, novas possibilidades para abordar os conteúdos, dando significado aos mesmos. O presente artigo relata a experiência deste Projeto e seus primeiros resultados, que já vêm se mostrando bastante positivos, principalmente ao despertar nos alunos do Ensino Médio o interesse em aprofundar seus estudos em Matemática por meio da iniciação científica promovida pelo programa PIBIC Jr – UNESP/CNPq. A parceria estabelecida entre os docentes envolvidos no Projeto e as escolas públicas tem possibilitado a realização destas orientações e auxiliado no acesso destes alunos em excelentes universidades públicas, via vestibular

Matemática acessível: palestras que promovem a contextualização como ferramenta motivadora

A importância da Matemática no desenvolvimento do raciocínio lógico e de habilidades essenciais na formação de um cidadão é inquestionável, porém no Brasil e, em particular no Estado de São Paulo, os indicadores de competência na matéria, obtidos nas avaliações realizadas no âmbito estadual, nacional e mundial, permanecem em níveis alarmantes. Reverter esta situação é fundamental para promover o desenvolvimento sustentável do país e, no intuito de dar alguma contribuição neste sentido, mesmo que somente em nível local, os docentes da área de Matemática do Instituto de Química da UNESP, Câmpus de Araraquara, desenvolvem um Projeto de Extensão denominado “Matemática acessível para todos” que tem por objetivo levar Palestras às escolas públicas de Araraquara e região, focadas na proposta de ensinar Matemática por meio da contextualização, modelagem e resolução de problemas. Espera-se com isso motivar os alunos a estudar e compreender a matéria, assim como apresentar aos docentes, novas possibilidades para abordar os conteúdos, dando significado aos mesmos. O presente artigo relata a experiência deste Projeto e seus primeiros resultados, que já vêm se mostrando bastante positivos, principalmente ao despertar nos alunos do Ensino Médio o interesse em aprofundar seus estudos em Matemática por meio da iniciação científica promovida pelo programa PIBIC Jr – UNESP/CNPq. A parceria estabelecida entre os docentes envolvidos no Projeto e as escolas públicas tem possibilitado a realização destas orientações e auxiliado no acesso destes alunos em excelentes universidades públicas, via vestibular

Innovation of Textiles through Natural By-Products and Wastes

Nowadays, the competitiveness of the textile industry and the consumers’ interest have been increasing the demand for innovative and functional textiles. Allied to this, sustainable developments are playing an increasingly important role in the textile industry. Such concerns led to a new development strategy based on the valorization of bio-based wastes and by-products of different industries, inserting this in the circular economy paradigm. These bio-based wastes and by-products come from several industries, as the agri-food industry. These resources present an enormous potential for valorization in the textile finish due to their intrinsic properties (antimicrobial, prebiotic, antioxidant activity, among others). This chapter will review the latest innovation and textile product development through different by-products and wastes, their main properties and characteristics and the advantages that they offer to the textile industry

Optimasi Portofolio Resiko Menggunakan Model Markowitz MVO Dikaitkan dengan Keterbatasan Manusia dalam Memprediksi Masa Depan dalam Perspektif Al-Qur`an

Risk portfolio on modern finance has become increasingly technical, requiring the use of sophisticated mathematical tools in both research and practice. Since companies cannot insure themselves completely against risk, as human incompetence in predicting the future precisely that written in Al-Quran surah Luqman verse 34, they have to manage it to yield an optimal portfolio. The objective here is to minimize the variance among all portfolios, or alternatively, to maximize expected return among all portfolios that has at least a certain expected return. Furthermore, this study focuses on optimizing risk portfolio so called Markowitz MVO (Mean-Variance Optimization). Some theoretical frameworks for analysis are arithmetic mean, geometric mean, variance, covariance, linear programming, and quadratic programming. Moreover, finding a minimum variance portfolio produces a convex quadratic programming, that is minimizing the objective function ðð¥with constraintsð ð 𥠥 ðandð´ð¥ = ð. The outcome of this research is the solution of optimal risk portofolio in some investments that could be finished smoothly using MATLAB R2007b software together with its graphic analysis

Search for heavy resonances decaying to two Higgs bosons in final states containing four b quarks

A search is presented for narrow heavy resonances X decaying into pairs of Higgs bosons (H) in proton-proton collisions collected by the CMS experiment at the LHC at root s = 8 TeV. The data correspond to an integrated luminosity of 19.7 fb(-1). The search considers HH resonances with masses between 1 and 3 TeV, having final states of two b quark pairs. Each Higgs boson is produced with large momentum, and the hadronization products of the pair of b quarks can usually be reconstructed as single large jets. The background from multijet and t (t) over bar events is significantly reduced by applying requirements related to the flavor of the jet, its mass, and its substructure. The signal would be identified as a peak on top of the dijet invariant mass spectrum of the remaining background events. No evidence is observed for such a signal. Upper limits obtained at 95 confidence level for the product of the production cross section and branching fraction sigma(gg -> X) B(X -> HH -> b (b) over barb (b) over bar) range from 10 to 1.5 fb for the mass of X from 1.15 to 2.0 TeV, significantly extending previous searches. For a warped extra dimension theory with amass scale Lambda(R) = 1 TeV, the data exclude radion scalar masses between 1.15 and 1.55 TeV

Search for supersymmetry in events with one lepton and multiple jets in proton-proton collisions at root s=13 TeV

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Search for anomalous couplings in boosted WW/WZ -> l nu q(q)over-bar production in proton-proton collisions at root s=8TeV

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Measurement of nuclear modification factors of gamma(1S)), gamma(2S), and gamma(3S) mesons in PbPb collisions at root s(NN)=5.02 TeV

The cross sections for ϒ(1S), ϒ(2S), and ϒ(3S) production in lead-lead (PbPb) and proton-proton (pp) collisions at √sNN = 5.02 TeV have been measured using the CMS detector at the LHC. The nuclear modification factors, RAA, derived from the PbPb-to-pp ratio of yields for each state, are studied as functions of meson rapidity and transverse momentum, as well as PbPb collision centrality. The yields of all three states are found to be significantly suppressed, and compatible with a sequential ordering of the suppression, RAA(ϒ(1S)) > RAA(ϒ(2S)) > RAA(ϒ(3S)). The suppression of ϒ(1S) is larger than that seen at √sNN = 2.76 TeV, although the two are compatible within uncertainties. The upper limit on the RAA of ϒ(3S) integrated over pT, rapidity and centrality is 0.096 at 95% confidence level, which is the strongest suppression observed for a quarkonium state in heavy ion collisions to date. © 2019 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3.Peer reviewe

Electroweak production of two jets in association with a Z boson in proton-proton collisions root s =13 TeV

A measurement of the electroweak (EW) production of two jets in association with a Z boson in proton-proton collisions at root s = 13 TeV is presented, based on data recorded in 2016 by the CMS experiment at the LHC corresponding to an integrated luminosity of 35.9 fb(-1). The measurement is performed in the lljj final state with l including electrons and muons, and the jets j corresponding to the quarks produced in the hard interaction. The measured cross section in a kinematic region defined by invariant masses m(ll) > 50 GeV, m(jj) > 120 GeV, and transverse momenta P-Tj > 25 GeV is sigma(EW) (lljj) = 534 +/- 20 (stat) fb (syst) fb, in agreement with leading-order standard model predictions. The final state is also used to perform a search for anomalous trilinear gauge couplings. No evidence is found and limits on anomalous trilinear gauge couplings associated with dimension-six operators are given in the framework of an effective field theory. The corresponding 95% confidence level intervals are -2.6 <cwww/Lambda(2) <2.6 TeV-2 and -8.4 <cw/Lambda(2) <10.1 TeV-2. The additional jet activity of events in a signal-enriched region is also studied, and the measurements are in agreement with predictions.Peer reviewe

Measurement of the top quark mass using charged particles in pp collisions at root s=8 TeV

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