BENEFÍCIOS COMPETITIVOS E CONFLITOS EM REDE HORIZONTAL DO SETOR SUPERMERCADISTA

The strategy of forming networks in the Brazilian supermarket sector has become an important alternative for Small and Medium Enterprises (SMEs) which are searching for better positions to face competition from large companies in the industry. In this sense, the purpose of the study is to analyze the competitive benefits and perceived conflicts of interest in the participation of the supermarket sector in horizontal networks in the southern region of Minas Gerais. Thus, a multicase, qualitative study was conducted, using secondary data (mainly by industry associations) and primary data collected through interviews with 8 participants of the horizontal network (Unissul). These network were chosen because of its strong presence in the southern region of Minas Gerais. The interviews were handled by Content Analysis, with the help of the software Sphinx lexica 5.0. The results proves that main competitive benefits can be appointed as a social capital and relationship learning among members, the joint work in promotional newspapers production, training programs and own brands. On the other hand, the conflicts arised owing to individuals incompatibilities, supplier's problem and decisions about promotional newspapers. This conflicts are seen as barriers to the complete use of these benefits, to the extent that the associativism undermine the culture of the satisfaction of partial goals, which sometimes evolve to opportunistic practices.A estratégia de formação de redes no setor supermercadista brasileiro tem se tornado uma importante alternativa para as pequenas e médias empresas PMEs que buscam melhores condições competitivas para enfrentar a concorrência das grandes empresas do setor. Nesse sentido, este estudo foi realizado com o objetivo de analisar os benefícios competitivos e os conflitos de interesses percebidos na participação de empresas do setor supermercadista em uma rede horizontal na região sul de Minas Gerais. Para isso, realizou-se um estudo multicasos qualitativo, com uso de dados secundários principalmente de associações de classe e dados primários coletados por meio de entrevistas realizadas com oito participantes da rede. As entrevistas foram tratadas por meio de análise de conteúdo, com auxílio do software Sphinx léxica 5.0. Os resultados evidenciam que os principais benefícios competitivos podem ser apontados como o capital social e o aprendizado nas relações pessoais entre os membros, o trabalho conjunto na confecção do jornal de ofertas, programas de treinamento e produtos de marca própria. Por outro lado, os conflitos emergem em virtude de incompatibilidades individuais, de problemas com fornecedores e de decisões sobre o jornal de ofertas. Tais conflitos são vistos como barreiras ao pleno aproveitamento destes benefícios, na medida em que minam a cultura do associativismo pela satisfação de objetivos parciais que, por vezes, evoluem para práticas oportunistas

Pervasive gaps in Amazonian ecological research

Biodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear un derstanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5–7 vast areas of the tropics remain understudied.8–11 In the American tropics, Amazonia stands out as the world’s most diverse rainforest and the primary source of Neotropical biodiversity,12 but it remains among the least known forests in America and is often underrepre sented in biodiversity databases.13–15 To worsen this situation, human-induced modifications16,17 may elim inate pieces of the Amazon’s biodiversity puzzle before we can use them to understand how ecological com munities are responding. To increase generalization and applicability of biodiversity knowledge,18,19 it is thus crucial to reduce biases in ecological research, particularly in regions projected to face the most pronounced environmental changes. We integrate ecological community metadata of 7,694 sampling sites for multiple or ganism groups in a machine learning model framework to map the research probability across the Brazilian Amazonia, while identifying the region’s vulnerability to environmental change. 15%–18% of the most ne glected areas in ecological research are expected to experience severe climate or land use changes by 2050. This means that unless we take immediate action, we will not be able to establish their current status, much less monitor how it is changing and what is being lostinfo:eu-repo/semantics/publishedVersio

Search for new physics with dijet angular distributions in proton-proton collisions at root S = 13 TeV

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Search for light bosons in decays of the 125 GeV Higgs boson in proton-proton collisions at root s=8 TeV

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Measurement of the top quark mass using single top quark events in proton-proton collisions at root s=8 TeV

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Search for supersymmetry in proton-proton collisions at 13 TeV using identified top quarks

A search for supersymmetry is presented based on proton-proton collision events containing identified hadronically decaying top quarks, no leptons, and an imbalance p(T)(miss) in transverse momentum. The data were collected with the CMS detector at the CERN LHC at a center-of-mass energy of 13 TeV, and correspond to an integrated luminosity of 35.9 fb(-1). Search regions are defined in terms of the multiplicity of bottom quark jet and top quark candidates, the p(T)(miss) , the scalar sum of jet transverse momenta, and themT2 mass variable. No statistically significant excess of events is observed relative to the expectation from the standard model. Lower limits on the masses of supersymmetric particles are determined at 95% confidence level in the context of simplified models with top quark production. For a model with direct top squark pair production followed by the decay of each top squark to a top quark and a neutralino, top squark masses up to 1020 GeVand neutralino masses up to 430 GeVare excluded. For amodel with pair production of gluinos followed by the decay of each gluino to a top quark-antiquark pair and a neutralino, gluino masses up to 2040 GeVand neutralino masses up to 1150 GeVare excluded. These limits extend previous results.Peer reviewe

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 single production of vector-like quarks decaying into a b quark and a W boson in proton-proton collisions at root s=13 TeV

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