Influence of ? Irradiation on Concrete Strength

Aging of concrete due to gamma irradiation. Strength of concrete are in a good correspondency with already known results.

ТЕОРЕТИЧНІ АСПЕКТИ ОЦІНЮВАННЯ РЕЗУЛЬТАТИВНОСТІ УПРАВЛІННЯ КАПІТАЛОМ ПІДПРИЄМСТВА

The determining vector of the transformation of the company capital management system is the search and integration of the latest business management tools that are oriented at achieving the planned results, and have the potential for increased efficiency and effectiveness of management actions in relation to capital and the enterprise’s activity as a whole. In view of this, the research and improvement of the conceptual provisions for performance assessment of company capital management becomes relevant. The purpose of the article is to improve the theoretical basis of performance assessment of company capital management from the point of essence’s clarification of the main concepts, principles and technology of the process. On the basis of generalization and critical analysis of theoretical knowledge of company capital management and the effectiveness of this process, there is an author definition of following concepts of “company capital”, “company capital management system”, “process of company capital management”, “the effectiveness of company capital management” in the article. There are revealed the principles, the observance of which ensure the adequacy of the object, criteria, procedures and tools for performance assessment of the company capital management in certain requirements of the subjects of assessment. It is proposed the referent model of performance assessment of company the capital management for practical use and it was determined the prospects of further scientific researches.На основании обобщения и критического анализа вопросов теории управления капиталом предпринимательских структур и результативности этого процесса обоснованы концептуальные положения оценки результативности управления капиталом предприятия. Изложена авторская точка зрения относительно трактовки капитала предприятия, системы и процесса управления им, сути и содержания понятия «результативность управления капиталом предприятия», моделирования процесса оценки результативности управленческих действий. Определены принципы, соблюдение которых обеспечивает повышение объективности результатов оценки управления капиталом и их практическую значимость для своевременной корректировки управленческих действий.На підставі узагальнення і критичного аналізу теоретичних знань з управління капіталом підприємницьких структур і результативності цього процесу обґрунтовано концептуальні положення оцінювання результативності управління капіталом підприємства. Наведена авторська точка зору щодо трактування капіталу підприємства, системи і процесу управління ним, суті та змістовності поняття «результативність управління капіталом підприємства», моделювання процесу оцінювання результативності управлінських дій. Визначено принципи, що забезпечують підвищення об’єктивності результатів оцінювання та їхню практичну значущість для своєчасного коригування управлінських дій щодо капіталу підприємства

Changing Preferences for Survival After Hospitalization With Advanced Heart Failure

ObjectivesThis study was designed to analyze how patient preferences for survival versus quality-of-life change after hospitalization with advanced heart failure (HF).BackgroundAlthough patient-centered care is a priority, little is known about preferences to trade length of life for quality among hospitalized patients with advanced HF, and it is not known how those preferences change after hospitalization.MethodsThe time trade-off utility, symptom scores, and 6-min walk distance were measured in 287 patients in the ESCAPE (Evaluation Study of Congestive Heart Failure and Pulmonary Artery Catheter Effectiveness) trial at hospitalization and again during 6 months after therapy to relieve congestion.ResultsWillingness to trade was bimodal. At baseline, the median trade for better quality was 3 months' survival time, with a modest relation to symptom severity. Preference for survival time was stable for most patients, but increase after discharge occurred in 98 of 145 (68%) patients initially willing to trade survival time, and was more common with symptom improvement and after therapy guided by pulmonary artery catheters (p = 0.034). Adjusting days alive after hospital discharge for patients' survival preference reduced overall days by 24%, with the largest reduction among patients dying early after discharge (p = 0.0015).ConclusionsPreferences remain in favor of survival for many patients despite advanced HF symptoms, but increase further after hospitalization. The bimodal distribution and the stability of patient preference limit utility as a trial end point, but support its relevance in design of care for an individual patient

К ВОПРОСУ О ЩАДИМОСТИ В ХИРУРГИИ ОТОСКЛЕРОЗА

The article deals with optimization of the current technical methods in operations on the osteosclerotic stapes aimed at minimization of any trauma in the inner ear and at maximal possible safety for the sound-conducting structures - the factors that guarantee the functional results of the surgery.Статья посвящена оптимизации технических приемов современных способов операций на стремени при отосклерозе с целью как минимизации травматичности внутреннего уха, так и максимально возможной сохранности звукопроводящих структур среднего уха, что во многом и определят функциональный результат операции

Hunt for new phenomena using large jet multiplicities and missing transverse momentum with ATLAS in 4.7 fb−1 of s√=7TeV proton-proton collisions

Results are presented of a search for new particles decaying to large numbers of jets in association with missing transverse momentum, using 4.7 fb−1 of pp collision data at s√=7TeV collected by the ATLAS experiment at the Large Hadron Collider in 2011. The event selection requires missing transverse momentum, no isolated electrons or muons, and from ≥6 to ≥9 jets. No evidence is found for physics beyond the Standard Model. The results are interpreted in the context of a MSUGRA/CMSSM supersymmetric model, where, for large universal scalar mass m 0, gluino masses smaller than 840 GeV are excluded at the 95% confidence level, extending previously published limits. Within a simplified model containing only a gluino octet and a neutralino, gluino masses smaller than 870 GeV are similarly excluded for neutralino masses below 100 GeV

Inclusive search for same-sign dilepton signatures in pp collisions at root s=7 TeV with the ATLAS detector

An inclusive search is presented for new physics in events with two isolated leptons (e or mu) having the same electric charge. The data are selected from events collected from p p collisions at root s = 7 TeV by the ATLAS detector and correspond to an integrated luminosity of 34 pb(-1). The spectra in dilepton invariant mass, missing transverse momentum and jet multiplicity are presented and compared to Standard Model predictions. In this event sample, no evidence is found for contributions beyond those of the Standard Model. Limits are set on the cross-section in a fiducial region for new sources of same-sign high-mass dilepton events in the ee, e mu and mu mu channels. Four models predicting same-sign dilepton signals are constrained: two descriptions of Majorana neutrinos, a cascade topology similar to supersymmetry or universal extra dimensions, and fourth generation d-type quarks. Assuming a new physics scale of 1 TeV, Majorana neutrinos produced by an effective operator V with masses below 460 GeV are excluded at 95% confidence level. A lower limit of 290 GeV is set at 95% confidence level on the mass of fourth generation d-type quarks

Measurement of the top quark-pair production cross section with ATLAS in pp collisions at \sqrt{s}=7\TeV

A measurement of the production cross-section for top quark pairs(\ttbar) in $pp$ collisions at \sqrt{s}=7 \TeV is presented using data recorded with the ATLAS detector at the Large Hadron Collider. Events are selected in two different topologies: single lepton (electron $e$ or muon $\mu$) with large missing transverse energy and at least four jets, and dilepton ($ee$, $\mu\mu$ or $e\mu$) with large missing transverse energy and at least two jets. In a data sample of 2.9 pb-1, 37 candidate events are observed in the single-lepton topology and 9 events in the dilepton topology. The corresponding expected backgrounds from non-\ttbar Standard Model processes are estimated using data-driven methods and determined to be $12.2 \pm 3.9$ events and $2.5 \pm 0.6$ events, respectively. The kinematic properties of the selected events are consistent with SM \ttbar production. The inclusive top quark pair production cross-section is measured to be \sigmattbar=145 \pm 31 ^{+42}_{-27} pb where the first uncertainty is statistical and the second systematic. The measurement agrees with perturbative QCD calculations.Comment: 30 pages plus author list (50 pages total), 9 figures, 11 tables, CERN-PH number and final journal adde

Single hadron response measurement and calorimeter jet energy scale uncertainty with the ATLAS detector at the LHC

The uncertainty on the calorimeter energy response to jets of particles is derived for the ATLAS experiment at the Large Hadron Collider (LHC). First, the calorimeter response to single isolated charged hadrons is measured and compared to the Monte Carlo simulation using proton-proton collisions at centre-of-mass energies of sqrt(s) = 900 GeV and 7 TeV collected during 2009 and 2010. Then, using the decay of K_s and Lambda particles, the calorimeter response to specific types of particles (positively and negatively charged pions, protons, and anti-protons) is measured and compared to the Monte Carlo predictions. Finally, the jet energy scale uncertainty is determined by propagating the response uncertainty for single charged and neutral particles to jets. The response uncertainty is 2-5% for central isolated hadrons and 1-3% for the final calorimeter jet energy scale.Comment: 24 pages plus author list (36 pages total), 23 figures, 1 table, submitted to European Physical Journal

Measurement of the production of a W boson in association with a charm quark in pp collisions at √s = 7 TeV with the ATLAS detector

The production of a W boson in association with a single charm quark is studied using 4.6 fb−1 of pp collision data at s√ = 7 TeV collected with the ATLAS detector at the Large Hadron Collider. In events in which a W boson decays to an electron or muon, the charm quark is tagged either by its semileptonic decay to a muon or by the presence of a charmed meson. The integrated and differential cross sections as a function of the pseudorapidity of the lepton from the W-boson decay are measured. Results are compared to the predictions of next-to-leading-order QCD calculations obtained from various parton distribution function parameterisations. The ratio of the strange-to-down sea-quark distributions is determined to be 0.96+0.26−0.30 at Q 2 = 1.9 GeV2, which supports the hypothesis of an SU(3)-symmetric composition of the light-quark sea. Additionally, the cross-section ratio σ(W + +c¯¯)/σ(W − + c) is compared to the predictions obtained using parton distribution function parameterisations with different assumptions about the s−s¯¯¯ quark asymmetry