Desenvolvimento de um sistema para compara??o de pre?os em supermercados na cidade de Te?filo Otoni

Diante do per?odo de crise econ?mica em que o pa?s se encontra o que se busca s?o pre?os baixos e ofertas promocionais. Ao se analisar os supermercados existentes na cidade de Te?filo Otoni - MG, p?de-se perceber que, apesar de divulgarem seus pre?os atrav?s de redes sociais como o Facebook, os principais meios pelos quais se faz essa divulga??o de pre?os de produtos e ofertas promocionais s?o an?ncios em r?dio e televis?o al?m de se utilizar banners e panfletos, os quais trazem consigo impedimentos no quesito facilidade de acesso ? informa??o. O objetivo desse estudo ? desenvolver um sistema para compara??o de pre?os em supermercados na cidade de Te?filo Otoni que, com base em uma lista de compras incrementada pelo pr?prio usu?rio, indique onde comprar cada item com o menor pre?o, bem como realizar uma compra ?nica com o melhor custo benef?cio, al?m de indicar promo??es em tempo real, tudo em prol da economia e facilidade ao realizar as compras. Levando em considera??o a dissemina??o da internet e a populariza??o dos smartphones, optou-se pelo desenvolvimento de um sistema web para compara??o de pre?os em supermercados. O banco de dados desse sistema possui informa??es de c?digos de barras de produtos comercializados no Brasil, com funcionalidades criadas para trazer economia e mitigar o tempo gasto em pesquisa de pre?os. Durante a fase inicial do projeto atentou-se para a parte visual do produto, investindo-se em interfaces intuitivas que por serem amig?veis e f?ceis de utilizar diminuem significativamente a curva de aprendizado, capazes de se adaptar a qualquer tipo de tela de dispositivos m?veis ou n?o. Foram aplicados algoritmos inteligentes capazes de otimizar o processo de busca e compara??o de pre?os, tornando a experi?ncia de uso bastante agrad?vel. ? v?lido lembrar que esse projeto contou com a experi?ncia de empres?rios donos de supermercados, os quais contribu?ram com informa??es relevantes agregando muito mais valor ? pesquisa. Ap?s a implementa??o do sistema e de v?rios testes realizados, observou-se que tal ferramenta ser? sim importante se inserida no contexto do objeto de estudo diante do per?odo de crise e recess?o que o pa?s enfrenta, trazendo vantagens financeiras tanto para o empres?rio que poder? dar mais visibilidade ao seu neg?cio quanto ao consumidor em agilidade, praticidade e economia no processo de compra. Durante os testes observou-se que o sistema de compara??o de pre?os em supermercados mostrou ser tamb?m uma ferramenta capaz de coletar informa??es de h?bitos alimentares dos usu?rios e varia??es de pre?os de alimentos, podendo essas informa??es serem ?teis para profissionais da ?rea da sa?de nutricional e ?rg?os estat?sticos como IBGE e DIEESE.Disserta??o (Mestrado Profissional) ? Programa de P?s-Gradua??o em Tecnologia, Sa?de e Sociedade, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2017.Faced with the period of economic crisis in which the country is located, centralization and variety of products is not enough, now we are looking for low prices and promotional offers. When analyzing the existing supermarkets in the city of Te?filo Otoni - MG, despite spreading their prices through social networks such as Facebook, it can be seen that the main means by which product prices and promotional offers are advertised are radio and television advertisements, besides the use of banners and pamphlets, which carry with them impediments in the modus operandi, especially in the question of ease of access to information. The goal of this study is to develop a price comparison system in supermarkets in the city of Te?filo Otoni, which, based on a user-supplied shopping list, indicates where to buy each item with the lowest price, where to make a single purchase with the better costeffectiveness besides indicating promotions in real time, all for the sake of economy and ease when making purchases. Taking into account the spread of the internet and the popularization of smartphones, we opted for the development of a web system to compare prices in supermarkets. The database of this system has information of barcodes of products commercialized in Brazil, with features designed to bring savings and mitigate time spent on price research. During the initial phase of the project we looked at the visual part of the product, investing in intuitive interfaces, able to adapt to any type of screen of mobile devices or not. Intelligent algorithms capable of optimizing the search process and price comparison were applied, making the use experience quite pleasant. It is worth remembering that this project relied on the experience of entrepreneurs who owned supermarkets, who contributed with relevant information adding much more value to the research. After the implementation of the system and several tests carried out, it was concluded that such a tool will be important if inserted in the context of the object of study in the period of crisis and recession that the country faces, bringing financial advantages to both the entrepreneur who can to give more visibility to your business regarding the consumer in agility, practicality and economy in the process of purchase. During the tests, it was observed that the system of comparison of prices in supermarkets was also a tool capable of collecting information on users eating habits and variations in food prices, and this information could be useful for professionals in the area of nutritional health and organs such as IBGE and DIEESE

Search for new phenomena in final states with an energetic jet and large missing transverse momentum in pp collisions at √ s = 8 TeV with the ATLAS detector

Results of a search for new phenomena in final states with an energetic jet and large missing transverse momentum are reported. The search uses 20.3 fb−1 of √ s = 8 TeV data collected in 2012 with the ATLAS detector at the LHC. Events are required to have at least one jet with pT > 120 GeV and no leptons. Nine signal regions are considered with increasing missing transverse momentum requirements between Emiss T > 150 GeV and Emiss T > 700 GeV. Good agreement is observed between the number of events in data and Standard Model expectations. The results are translated into exclusion limits on models with either large extra spatial dimensions, pair production of weakly interacting dark matter candidates, or production of very light gravitinos in a gauge-mediated supersymmetric model. In addition, limits on the production of an invisibly decaying Higgs-like boson leading to similar topologies in the final state are presente

Observation of associated near-side and away-side long-range correlations in √sNN=5.02 TeV proton-lead collisions with the ATLAS detector

Two-particle correlations in relative azimuthal angle (Δϕ) and pseudorapidity (Δη) are measured in √sNN=5.02  TeV p+Pb collisions using the ATLAS detector at the LHC. The measurements are performed using approximately 1  μb-1 of data as a function of transverse momentum (pT) and the transverse energy (ΣETPb) summed over 3.1<η<4.9 in the direction of the Pb beam. The correlation function, constructed from charged particles, exhibits a long-range (2<|Δη|<5) “near-side” (Δϕ∼0) correlation that grows rapidly with increasing ΣETPb. A long-range “away-side” (Δϕ∼π) correlation, obtained by subtracting the expected contributions from recoiling dijets and other sources estimated using events with small ΣETPb, is found to match the near-side correlation in magnitude, shape (in Δη and Δϕ) and ΣETPb dependence. The resultant Δϕ correlation is approximately symmetric about π/2, and is consistent with a dominant cos⁡2Δϕ modulation for all ΣETPb ranges and particle pT

Search for direct pair production of the top squark in all-hadronic final states in proton-proton collisions at s√=8 TeV with the ATLAS detector

The results of a search for direct pair production of the scalar partner to the top quark using an integrated luminosity of 20.1fb−1 of proton–proton collision data at √s = 8 TeV recorded with the ATLAS detector at the LHC are reported. The top squark is assumed to decay via t˜→tχ˜01 or t˜→ bχ˜±1 →bW(∗)χ˜01 , where χ˜01 (χ˜±1 ) denotes the lightest neutralino (chargino) in supersymmetric models. The search targets a fully-hadronic final state in events with four or more jets and large missing transverse momentum. No significant excess over the Standard Model background prediction is observed, and exclusion limits are reported in terms of the top squark and neutralino masses and as a function of the branching fraction of t˜ → tχ˜01 . For a branching fraction of 100%, top squark masses in the range 270–645 GeV are excluded for χ˜01 masses below 30 GeV. For a branching fraction of 50% to either t˜ → tχ˜01 or t˜ → bχ˜±1 , and assuming the χ˜±1 mass to be twice the χ˜01 mass, top squark masses in the range 250–550 GeV are excluded for χ˜01 masses below 60 GeV

Search for pair-produced long-lived neutral particles decaying to jets in the ATLAS hadronic calorimeter in ppcollisions at √s=8TeV

The ATLAS detector at the Large Hadron Collider at CERN is used to search for the decay of a scalar boson to a pair of long-lived particles, neutral under the Standard Model gauge group, in 20.3fb−1of data collected in proton–proton collisions at √s=8TeV. This search is sensitive to long-lived particles that decay to Standard Model particles producing jets at the outer edge of the ATLAS electromagnetic calorimeter or inside the hadronic calorimeter. No significant excess of events is observed. Limits are reported on the product of the scalar boson production cross section times branching ratio into long-lived neutral particles as a function of the proper lifetime of the particles. Limits are reported for boson masses from 100 GeVto 900 GeV, and a long-lived neutral particle mass from 10 GeVto 150 GeV

Measurement of the cross-section of high transverse momentum vector bosons reconstructed as single jets and studies of jet substructure in pp collisions at √s = 7 TeV with the ATLAS detector

This paper presents a measurement of the cross-section for high transverse momentum W and Z bosons produced in pp collisions and decaying to all-hadronic final states. The data used in the analysis were recorded by the ATLAS detector at the CERN Large Hadron Collider at a centre-of-mass energy of √s = 7 TeV;{\rm Te}{\rm V}$and correspond to an integrated luminosity of$4.6\;{\rm f}{{{\rm b}}^{-1}}$. The measurement is performed by reconstructing the boosted W or Z bosons in single jets. The reconstructed jet mass is used to identify the W and Z bosons, and a jet substructure method based on energy cluster information in the jet centre-of-mass frame is used to suppress the large multi-jet background. The cross-section for events with a hadronically decaying W or Z boson, with transverse momentum${{p}_{{\rm T}}}\gt 320\;{\rm Ge}{\rm V}$and pseudorapidity$|\eta |\lt 1.9$, is measured to be${{\sigma }_{W+Z}}=8.5\pm 1.7$ pb and is compared to next-to-leading-order calculations. The selected events are further used to study jet grooming techniques

Search for the neutral Higgs bosons of the minimal supersymmetric standard model in pp collisions at root s=7 TeV with the ATLAS detector

A search for neutral Higgs bosons of the Minimal Supersymmetric Standard Model (MSSM) is reported. The analysis is based on a sample of proton-proton collisions at a centre-of-mass energy of 7TeV recorded with the ATLAS detector at the Large Hadron Collider. The data were recorded in 2011 and correspond to an integrated luminosity of 4.7 fb-1 to 4.8 fb-1. Higgs boson decays into oppositely-charged muon or τ lepton pairs are considered for final states requiring either the presence or absence of b-jets. No statistically significant excess over the expected background is observed and exclusion limits at the 95% confidence level are derived. The exclusion limits are for the production cross-section of a generic neutral Higgs boson, φ, as a function of the Higgs boson mass and for h/A/H production in the MSSM as a function of the parameters mA and tan β in the mhmax scenario for mA in the range of 90GeV to 500 GeV. Copyright CERN

Search for R-parity-violating supersymmetry in events with four or more leptons in sqrt(s) =7 TeV pp collisions with the ATLAS detector

A search for new phenomena in final states with four or more leptons (electrons or muons) is presented. The analysis is based on 4.7 fb−1 of $\sqrt{s}=7\;\mathrm{TeV}$ proton-proton collisions delivered by the Large Hadron Collider and recorded with the ATLAS detector. Observations are consistent with Standard Model expectations in two signal regions: one that requires moderate values of missing transverse momentum and another that requires large effective mass. The results are interpreted in a simplified model of R-parity-violating supersymmetry in which a 95% CL exclusion region is set for charged wino masses up to 540 GeV. In an R-parity-violating MSUGRA/CMSSM model, values of m 1/2 up to 820 GeV are excluded for 10 < tan β < 40

Search for high-mass resonances decaying to dilepton final states in pp collisions at s√=7 TeV with the ATLAS detector

The ATLAS detector at the Large Hadron Collider is used to search for high-mass resonances decaying to an electron-positron pair or a muon-antimuon pair. The search is sensitive to heavy neutral Z′ gauge bosons, Randall-Sundrum gravitons, Z * bosons, techni-mesons, Kaluza-Klein Z/γ bosons, and bosons predicted by Torsion models. Results are presented based on an analysis of pp collisions at a center-of-mass energy of 7 TeV corresponding to an integrated luminosity of 4.9 fb−1 in the e + e − channel and 5.0 fb−1 in the μ + μ −channel. A Z ′ boson with Standard Model-like couplings is excluded at 95 % confidence level for masses below 2.22 TeV. A Randall-Sundrum graviton with coupling k/MPl=0.1 is excluded at 95 % confidence level for masses below 2.16 TeV. Limits on the other models are also presented, including Technicolor and Minimal Z′ Models