16 research outputs found

    Measurements of differential production cross sections for a Z boson in association with jets in pp collisions at root s=8 TeV

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    Managing Secure Virtual Infrastructures: From Networks To Clouds - A Report On Lanoms 2011

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    The 7th Latin American Network Operations and Management Symposium (LANOMS 2011) was held in Quito, Ecuador, on October 10 11, 2011. A panel on 'Trends in Managing Virtual Infrastructures: from Networks to Clouds', moderated by Prof. José Marcos Nogueira, from Federal University of Minas Gerais, Brazil, generated lively discussions on the current state of the technology in cloud computing, what are the main challenges in this field, and what can be expected to be solvable in the near future. Dr. Vladimir Tosic's keynote started by highlighting that currently many organizations are attracted to cloud computing as an information and communications technology sourcing model that can improve flexibility and total cost of systems. Prof. Otto C.M.B. Duarte's keynote was 'On the Design of the Future Internet'. He started highlighting that the very growth of the Internet is due to the TCP/IP protocol stack and its model of a simple core and complexity on the border.204601607Westphall, C., Kormann, L., Notare, M., Riso, B.G., Cruz, F., Report: Network management solutions and trends for the Latin and global markets (2000) J. Netw. Syst. Manag., 8 (2), pp. 299-304Nogueira, J.M., Loureiro, A.A.F., Network management as a strategy for evolution and development: A leport from LANOMS 2001 (2002) J. Netw. Syst. Manag., 10 (2), pp. 261-264Duarte Jr., E.P., Madeira, E., Future trends in network management: A report on LANOMS 2003 (2003) J. Netw. Syst. Manag., 11 (4), pp. 499-503Granville, L.Z., Gaspary, L.P., Schulze, B., De Souza, J.N., Spotlights on network operations and management research in Latin America: A report on LANOMS 2005 (2006) J. Netw. Syst. Manag., 14 (1), pp. 175-179De Souza, J.N., Schulze, B., Sauvé, J.P., Madeira, E., Ziviani, A., Bringing autonomic principles for managing next generation networks and services: A report on LANOMS 2007 (2008) J. Netw. Syst. Manag., 16 (1), pp. 120-128The 6th Latin American Network Operations and Management Symposium (LANOMS'2009), , http://www.lanoms.org/2009, accessed in April 2012

    Estudo da curva de crescimento de animais da raça Guzerá e seus cruzamentos alimentados a pasto, com e sem suplementação: 1. Análise e seleção das funções não-lineares Growth curve analysis of Guzera and their crossbreds fed under grazing with or without supplementation: 1. Analysis and selection of nonlinear functions

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    RESUMO - O objetivo deste trabalho foi analisar sete funções não-lineares para descrever o crescimento de machos e fêmeas da raça Guzerá e seus cruzamentos (3/4Guzerá-1/4Pardo Suíço, 1/2Nelore-1/4Pardo Suíço-1/4Guzerá, 1/2Pardo Suíço-1/2Guzerá, 1/2Chianina-1/4Pardo Suíço-1/4Guzerá, 1/2Caracú-1/2Guzerá, 1/2Caracu-1/4Pardo Suíço-1/4Guzerá) submetidos a três níveis de suplementação (sem, durante o período seco e o ano todo), a fim de analisar e selecionar uma função que apresentasse menores desvios de regressão, menor variação residual, maior coeficiente de determinação, menor variação entre os parâmetros dos animais, maior convergência e valor assintótico compatível com o peso adulto observado. A função que melhor se enquadrou nesses parâmetros de seleção foi a função de Gompertz, seguida da função de Von Bertalanffy. A função de Richards apresentou grande dificuldade computacional para o ajuste, resultando em baixa convergência. As funções de Brody apresentaram as maiores estimativas de peso adulto e a função de Gompertz modificada e Logística, as menores.<br>ABSTRACT - The objective of this work was to evaluate seven non linear functions to describe Guzera male and female growth curves, and their crossbreds (3/4Guzera-1/4Brown Swiss, 1/2Nellore-1/4Brown Swiss-1/4Guzera, 1/2Guzera-1/2Brown Swiss, 1/2Chianina- 1/4Brown Swiss-1/4Guzera, 1/2Caracu-1/2Guzera, 1/2Caracu-1/4Brown Swiss-1/4Guzera) submitted to three levels of supplementation (without, during the dry period and the whole year), to analize and to select one function which presented lower regression deviation, lower residual sum of squares, higher coefficient of determination, lower variation among animal parameters, higher convergence and assintotic compatible value with the observed mature weight. The function that best express these parameters of selection was the Gompertz, followed by the Von Bertalanffy function. The Richards function showed the high computational difficulty to the adjustment, resulting on lower convergence. Brody functions presented the largest and the modified Gompertz and Logistic functions showed the smallest mature weight

    Search for heavy neutrinos or third-generation leptoquarks in final states with two hadronically decaying tau leptons and two jets in proton-proton collisions at root s=13 TeV

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    Ciências Sociais e Saúde no Brasil: Três Décadas de Ensino e Pesquisa

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    Predictors for anastomotic leak, postoperative complications, and mortality after right colectomy for cancer: Results from an international snapshot audit

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    Background: A right hemicolectomy is among the most commonly performed operations for colon cancer, but modern high-quality, multination data addressing the morbidity and mortality rates are lacking. Objective: This study reports the morbidity and mortality rates for right-sided colon cancer and identifies predictors for unfavorable short-term outcome after right hemicolectomy. Design: This was a snapshot observational prospective study. Setting: The study was conducted as a multicenter international study. Patients: The 2015 European Society of Coloproctology snapshot study was a prospective multicenter international series that included all patients undergoing elective or emergency right hemicolectomy or ileocecal resection over a 2-month period in early 2015. This is a subanalysis of the colon cancer cohort of patients. Main Outcome Measures: Predictors for anastomotic leak and 30-day postoperative morbidity and mortality were assessed using multivariable mixed-effect logistic regression models after variables selection with the Lasso method. Results: Of the 2515 included patients, an anastomosis was performed in 97.2% (n = 2444), handsewn in 38.5% (n = 940) and stapled in 61.5% (n = 1504) cases. The overall anastomotic leak rate was 7.4% (180/2444), 30-day morbidity was 38.0% (n = 956), and mortality was 2.6% (n = 66). Patients with anastomotic leak had a significantly increased mortality rate (10.6% vs 1.6% no-leak patients; p 65 0.001). At multivariable analysis the following variables were associated with anastomotic leak: longer duration of surgery (OR = 1.007 per min; p = 0.0037), open approach (OR = 1.9; p = 0.0037), and stapled anastomosis (OR = 1.5; p = 0.041). Limitations: This is an observational study, and therefore selection bias could be present. For this reason, a multivariable logistic regression model was performed, trying to correct possible confounding factors. Conclusions: Anastomotic leak after oncologic right hemicolectomy is a frequent complication, and it is associated with increased mortality. The key contributing surgical factors for anastomotic leak were anastomotic technique, surgical approach, and duration of surgery

    Lasers

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    Search for dark matter produced in association with heavy-flavor quark pairs in proton-proton collisions at √s=13TeV

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    A search is presented for an excess of events with heavy-flavor quark pairs (tt¯ and bb¯) and a large imbalance in transverse momentum in data from proton–proton collisions at a center-of-mass energy of 13TeV. The data correspond to an integrated luminosity of 2.2fb-1 collected with the CMS detector at the CERN LHC. No deviations are observed with respect to standard model predictions. The results are used in the first interpretation of dark matter production in tt¯ and bb¯ final states in a simplified model. This analysis is also the first to perform a statistical combination of searches for dark matter produced with different heavy-flavor final states. The combination provides exclusions that are stronger than those achieved with individual heavy-flavor final states. © 2017, CERN for the benefit of the CMS collaboration
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