1,516 research outputs found
Groupoids in categories with partial covers
No full textMeyer and Zhu survey the general theory of groupoids, groupoid actions, groupoid principal bundles, and various kinds of morphisms between groupoids in the framework of categories with pretopology. We modify the categorical framework there to allow for "partial" notion. A category with partial covers is equipped with a notion of "partial cover", which allows to define partial sheaves, partial bibundle actors, partial Hilsum-Skandalis morphisms, partial Morita equivalence, partial groupoid fibration, partial groupoid covering, and so on. The categories of topological spaces, finite or infinite dimensional manifolds are examples of such categories. We study extra assumptions on stronger pretopologies that are needed for this theory. We check these extra assumptions in several categories with partial covers. We will see that the generalized groupoid action of H an G may be transformed along a Morita equivalence G∼K to an action of H on K. We proved that in a groupoid fibration G→L→H, if the groupoids G and H are basic then so is L
Production of jets in association with a vector boson in protonproton collisions at 7 TeV represent an important process to study QCD in a multiscale environment. The cross sections, differential in several kinematics variables, have been measured up to high jet multiplicities and compared to new higherorder QCD calculations. The results are compared to Monte Carlo simulations and to predictions computed at NLO perturbative QCD for different NLO sets of parton distribution functions
Lipoprotein(a) and apolipoprotein B as risk factors in coronary heart disease and acute myocardial infarction development
No full textAim. To investigate associations between coronary heart disease (CHD) and levels of lipoprotein(a), Lp(a), apolipoprotein B, apoB, as important risk factors (RF). Material and methods. The study included 661 participants: 575 patients with confirmed CHD (302 males; mean age 63.21±12.1 years; 273 females, mean age 69.57±10.85 years), and 86 individuals without cardiovascular disease (CVD) at baseline (60 males, mean age 37.41±12.26 years; 26 females, mean age 40.53±12.04 years). Lipid profile: total cholesterol (TCH), triglycerides (TG), Lp(a), apoB – was assessed. Results. Significant difference between two groups was observed in t-test: for apoB level p=0.0000; for Lp(a) p=0.0069. Lp(a) and apoB levels correlated with other standard parameters of lipid profile – TCH, TG. ApoB level (mg/dl) was significantly higher in CHD patients with arterial hypertension (AH) than in normotensive patients, as well as in participants with anterior acute myocardial infarction (MI). Conclusion. Lipid profile parameters Lp(a) and apoB are important RF of CHD. Positive correlation between Lp(a) and TCH levels was observed only in CHD patients, in comparison with CVD-free individuals. In CHD patients with normal TCH and TG levels, increased apoB concentration (>120 mg/dl) was an important RF of CHD development, especially in AH individuals. ApoB level increase significantly correlated with acute MI risk (anterior MI, in particular) in CHD patients
Measurements of underlying-event properties using neutral and charged particles in pp collisions at √s=900 GeV and √s=7TeV with the ATLAS detector at the LHC
No full textWe present first measurements of charged and neutral particle-flow correlations in pp collisions using the ATLAS calorimeters. Data were collected in 2009 and 2010 at centre-of-mass energies of 900 GeV and 7 TeV. Events were selected using a minimum-bias trigger which required a charged particle in scintillation counters on either side of the interaction point. Particle flows, sensitive to the underlying event, are measured using clusters of energy in the ATLAS calorimeters, taking advantage of their fine granularity. No Monte Carlo generator used in this analysis can accurately describe the measurements. The results are independent of those based on charged particles measured by the ATLAS tracking systems and can be used to constrain the parameters of Monte Carlo generators
Detector Control System of Tile Calorimeter
No full textThe subject of this presentation is to describe the Detector Control System (DCS) implementation for Tile Calorimeter sub-detector. It describes hardware layout and software components for main, infrastructure related and sub-detector calibration systems. It discusses implementation of the top level software Finite State Machine (FSM)and discusses state models of FSM objects. Presentation shows usage of Configuration and Conditions Data Bases, for Tile Calorimeter DCS
The issues of the History of the Church of Georgia in the book of Evgeny Shishkin „Caucasian priest-confessor metropolitan Anthony (Romanovsky): Biography“
No full textThe book of the priest Evgeny Shishkin „Caucasian priest-confessor metropolitan Anthony Romanovsky: Biography“ (Stavropol, 2006) is interesting for us, because the metropolitan Anthony was serving in Georgia as priestmonk and bishop from 1913 till 1926. In 1943 he also took part in the restoration of the Eucharistic relationship between of the Churches of Georgia and Russia.
From the book of priest Evgeny we focused on only the issues related to the Church of Georgia for discussing in the article. In particular, the author's attitude towards the restoration of the authocephaly of the Church of Georgia on March 12 (25), 1917 and the nationalization of the ecclesiastical property and educational institutions. In the article there is also criticised the fact, that in 1926 one of the reasons for the arrest of the Archbishop Anthony was declared his disagreement with the Catholicos-Patriarch of All Georgia Ambrosi (1921-1927).
Let's assume, that the author of the book discusses the issues in the same way as the majority of the officials of the Russian Church have discussed in 1917 „angry about the selfwill“ of Georgians. He does not fully represent the illegal actions by Russian secular and religious authorities towards of the Church of Georgia. This misapprehension is not due to the lack of material available to the priest Evgeny
Detector Control System of the ATLAS Tile Calorimeter
No full textThe main task of the ATLAS Tile calorimeter Detector Control System (DCS) is to enable the coherent and safe operation of the calorimeter. All actions initiated by the operator, as well as all errors, warnings and alarms concerning the hardware of the detector are handled by DCS. The Tile calorimeter DCS controls and monitors mainly the low voltage and high voltage power supply systems, but it is also interfaced with the infrastructure (cooling system and racks), the calibration systems, the data acquisition system, configuration and conditions databases and the detector safety system. The system has been operational since the beginning of LHC operation and has been extensively used in the operation of the detector. In the last months effort was directed to the implementation of automatic recovery of power supplies after trips. Current status, results and latest developments will be presented
Kidney function in the very elderly with hypertension: data from the hypertension in the very elderly (HYVET) trial.
No full textBACKGROUND: numerous reports have linked impaired kidney function to a higher risk of cardiovascular events and mortality. There are relatively few data relating to kidney function in the very elderly. METHODS: the Hypertension in the Very Elderly Trial (HYVET) was a randomised placebo-controlled trial of indapamide slow release 1.5mg ± perindopril 2-4 mg in those aged ≥80 years with sitting systolic blood pressures of ≥160 mmHg and diastolic pressures of <110 mmHg. Kidney function was a secondary outcome. RESULTS: HYVET recruited 3,845 participants. The mean baseline estimated glomerular filtration rate (eGFR) was 61.7 ml/min/1.73 m(2). When categories of the eGFR were examined, there was a possible U-shaped relationship between eGFR, total mortality, cardiovascular mortality and events. The nadir of the U was the eGFR category ≥60 and <75 ml/min/1.73 m(2). Using this as a comparator, the U shape was clearest for cardiovascular mortality with the eGFR <45 ml/min/1.73 m(2) and ≥75 ml/min/1.73 m(2) showing hazard ratios of 1.88 (95% CI: 1.2-2.96) and 1.36 (0.94-1.98) by comparison. Proteinuria at baseline was also associated with an increased risk of later heart failure events and mortality. CONCLUSIONS: although these results should be interpreted with caution, it may be that in very elderly individuals with hypertension both low and high eGFR indicate increased risk
Інтегральні функціонали функції регресії Гассера-Мюллера
No full textFor integral functionals of the Gasser–Muller regression function and its derivatives, we consider the plug-in estimator. The consistency and asymptotic normality of the estimator are shown.Для інтегральних функцiоналiв Функції регресії Гассера-Мюллера та їх похідних розглядається оцінка, що підключається. Встановлено обґрунтованість та асимптотичну нормальність цієї оцінки.The work is supported by the Shota Rustaveli National Scientific Foundation, Project No. FR/308/5-104/12
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