300 research outputs found

    Measles Technical Working Group: strategies for measles control and elimination : report of a meeting, Geneva, 11-12 May 2000

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    Title from PDF t.p. (viewed Aug. 31, 2004)."WHO/V&B/01.37.""Document produced by the Expanded Programme on Immunization of the Department of Vaccines and Biologicals."--PDF t.p. verso."In May 2000 WHO, UNICEF and the United States Centers for Disease Control and Prevention (CDC), cosponsored a meeting to bring together the representatives of international agencies, countries and academics with experience in measles control and elimination to review the strategies required to achieve measles mortality and morbidity reduction goals." - p. viiMode of access: Internet

    Program and Budget Review Process: Development of the New Procedure

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    Summary of discussions of the TAC Working Group on the Budget Process at ISNAR Headquarters in January 1986. The purpose of the discussions was to develop a list of essential candidate activities of CGIAR centers, and a set of evaluation and selection criteria with which to rate center activities. These criteria would be used in a proposed new program and budget review process. These discussions were followed by meetings between the TAC working group and a working group of Center Directors at which TAC's evaluation and selection criteria and list of activities were discussed. Annexes include a list of candidate activities, first draft of a systemwide glossary of activities, and two lists of tentative indicators and criteria by the two working groups. Agenda document, TAC 39th Meeting, March 1986

    The Ecoregional Approach to Research in the CGIAR

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    Report of a joint TAC/Center Directors working group on the implementation of the ecoregional approach by the CGIAR. The document also contains comments by the center directors and by TAC. It was discussed at TAC 60, at a technical consultation organized by SPAAR in April 1993 (report in the collection), and a work shop following the CGIAR meeting of May 1993 (not reported). These discussions were considered at TAC 61. The report describes the evolution of the ecoregional concept during TAC's review of CGIAR priorities and strategies. The approach was seen as a means of conducting applied and strategic research on sustainable production in regions defined by ecological type, drawing on global research for that purpose, and strengthening cooperation with NARS and internationally. Responses from centers are summarized. The paper explores a research model for this purpose, and discusses possible operational models. It also discusses IARC measures to incorporate the ecoregional approach into their medium term plans. The working group doubts that any single operational approach will suit all regions needs. Annexed to the report are a synthesis of TAC's views of the concept, an overview of current and proposed center activities, and the terms of reference of the working group

    Pair production of charged Higgs scalars from electroweak gauge boson fusion

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    We compute the contribution to charged Higgs boson pair production at the Large Hadron Collider (LHC) due to the scattering of two electroweak (EW) gauge bosons, these being in turn generated via bremsstrahlung off incoming quarks: q q --> q q V^*V^* --> q q H^+H^- (V=gamma,Z,W^{+/-}). We verify that the production cross section of this mode is tan beta independent and show that it is smaller than that of H^+H^- production via q q-initiated processes but generally larger than that of the loop-induced channel gg --> H^+H^-. Pair production of charged Higgs bosons is crucial in order to test EW symmetry breaking scenarios beyond the Standard Model (SM). We show that the detection of these kind of processes at the standard LHC is however problematic, because of their poor production rates and the large backgrounds.Comment: 22 pages, latex, 8 figures (largely revised version to appear in JPG

    Butler enables rapid cloud-based analysis of thousands of human genomes.

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    We present Butler, a computational tool that facilitates large-scale genomic analyses on public and academic clouds. Butler includes innovative anomaly detection and self-healing functions that improve the efficiency of data processing and analysis by 43% compared with current approaches. Butler enabled processing of a 725-terabyte cancer genome dataset from the Pan-Cancer Analysis of Whole Genomes (PCAWG) project in a time-efficient and uniform manner

    Accurate QCD predictions for heavy-quark jets at the Tevatron and LHC

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    Heavy-quark jets are important in many of today's collider studies and searches, yet predictions for them are subject to much larger uncertainties than for light jets. This is because of strong enhancements in higher orders from large logarithms, ln(p_t/m_Q). We propose a new definition of heavy-quark jets, which is free of final-state logarithms to all orders and such that all initial-state collinear logarithms can be resummed into the heavy-quark parton distributions. Heavy-jet spectra can then be calculated in the massless approximation, which is simpler than a massive calculation and reduces the theoretical uncertainties by a factor of three. This provides the first ever accurate predictions for inclusive b- and c-jets, and the latter have significant discriminatory power for the intrinsic charm content of the proton. The techniques introduced here could be used to obtain heavy-flavour jet results from existing massless next-to-leading order calculations for a wide range of processes. We also discuss the experimental applicability of our flavoured jet definition.Comment: 22 pages, 7 figure

    A comparative study of photogrammetric methods using panoramic photography in a forensic context.

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    Taking measurements of a scene is an integral aspect of the crime scene documentation process, and accepted limits of accuracy for taking measurements at a crime scene vary throughout the world. In the UK, there is no published accepted limit of accuracy, whereas the United States has an accepted limit of accuracy of 0.25 inch. As part of the International organisation for Standardisation 17020 accreditation competency testing is required for all work conducted at the crime scene. As part of this, all measuring devices need to be calibrated within known tolerances in order to meet the required standard, and measurements will be required to have a clearly defined limit of accuracy. This investigation sought to compare measurement capabilities of two different methods for measuring crime scenes; using a tape measure, and a 360° camera with complimentary photogrammetry software application. Participants measured ten fixed and non-fixed items using both methods and these were compared to control measurements taken using a laser distance measure. Statistical analysis using a Wilcoxon Signed Rank test demonstrated statistically significant differences between the tape, software and control measurements. The majority of the differences were negligible, amounting to millimetre differences. The tape measure was found to be more accurate than the software application, which offered greater precision. Measurement errors were attributed to human error in understanding the operation of the software, suggesting that training be given before using the software to take measurements. Transcription errors were present with the tape measure approach. Measurements taken using the photogrammetry software were more reproducible than the tape measure approach, and offered flexibility with regards to the time and location of the documentation process, unlike manual tape measuring

    Overcoming blame culture: key strategies to catalyse maternal and perinatal death surveillance and response.

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    Maternal and perinatal death surveillance and response (MPDSR) is a health systems process entailing the continuous cycle of identification, notification, and review of maternal and perinatal deaths (Surveillance), followed by actions to improve service delivery and quality of care and Response. Prior to the COVID-19 pandemic, there were an estimated 4.6 million maternal and newborn deaths and stillbirths each year. During the pandemic, maternal and perinatal health outcomes have worsened, especially in low- and middle-income countries, highlighting the urgent need to galvanize MPDSR to end preventable mortality and strengthen health systems

    Prospects for heavy supersymmetric charged Higgs boson searches at hadron colliders

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    We investigate the production of a heavy charged Higgs boson at hadron colliders within the context of the MSSM. A detailed study is performed for all important production modes and basic background processes for the t\bar{t}b\bar{b} signature. In our analysis we include effects of initial and final state showering, hadronization, and principal detector effects. For the signal production rate we include the leading SUSY quantum effects at high \tan\beta>~ mt/mb. Based on the obtained efficiencies for the signal and background we estimate the discovery and exclusion mass limits of the charged Higgs boson at high values of \tan\beta. At the upgraded Tevatron the discovery of a heavy charged Higgs boson (MH^+ >~ 200 GeV) is impossible for the tree-level cross-section values. However, if QCD and SUSY effects happen to reinforce mutually, there are indeed regions of the MSSM parameter space which could provide 3\sigma evidence and, at best, 5\sigma charged Higgs boson discovery at the Tevatron for masses M_H^+<~ 300 GeV and M_H^+<~ 250 GeV, respectively, even assuming squark and gluino masses in the (500-1000) GeV range. On the other hand, at the LHC one can discover a H^+ as heavy as 1 TeV at the canonical confidence level of 5\sigma; or else exclude its existence at 95% C.L. up to masses ~ 1.5 TeV. Again the presence of SUSY quantum effects can be very important here as they may shift the LHC limits by a few hundred GeV.Comment: Latex2e, 44 pages, 15 figures, 6 tables, uses JHEP3.sty, axodraw.sty. Comments added. Discussion on QCD factors clarified. Added discussion on uncertainties. Change of presentation of Tables 4 and 5 and Fig.6. Results and conclusions unchanged. Version accepted in JHE
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