CLASSIFICATION OF RISKS IN INVESTMENT AND CONSTRUCTION ACTIVITIES

In thе article investigates the classification of risks, which is one of the most effective ways of risk management of construction companies. The aim of this publication is a compilation and systematization of some existing approaches to risk classification of investment and construction companies

CLASSIFICATION OF RISKS IN INVESTMENT AND CONSTRUCTION ACTIVITIES

In thе article investigates the classification of risks, which is one of the most effective ways of risk management of construction companies. The aim of this publication is a compilation and systematization of some existing approaches to risk classification of investment and construction companies

Induced polarization of Lambda(1116) in kaon electroproduction

We have measured. the induced polarization of the Lambda(1116) in the reaction ep - \u3e e\u27 K+ Lambda, detecting the scattered e\u27 and K+ in the final state along with the proton from the decay Lambda - \u3e p pi(-). The present study used the CEBAF Large Acceptance Spectrometer (CLAS), which allowed for a large kinematic acceptance in invariant energy W (1.6 \u3c = W \u3c = 2.7 GeV) and covered the full range of the kaon production angle at an average momentum transfer Q(2) = 1.90 GeV2. In this experiment a 5.50-GeV electron beam was incident upon an unpolarized liquid-hydrogen target. We have mapped out the W and kaon production angle dependencies of the induced polarization and found striking differences from photoproduction data over most of the kinematic range studied. However, we also found that the induced polarization is essentially Q(2) independent in our kinematic domain, suggesting that somewhere below the Q(2) covered here there must be a strong Q(2) dependence. Along with previously published photo-and electroproduction cross sections and polarization observables, these data are needed for the development of models, such as effective field theories, and as input to coupled-channel analyses that can provide evidence of previously unobserved s-channel resonances

Energy Calibration of the JLab Bremsstrahlung Tagging System

In this report, we present the energy calibration of the Hall B bremsstrahlung tagging system at the Thomas Jefferson National Accelerator Facility. The calibration was performed using a magnetic pair spectrometer. The tagged photon energy spectrum was measured in coincidence with $e^+e^-$ pairs as a function of the pair spectrometer magnetic field. Taking advantage of the internal linearity of the pair spectrometer, the energy of the tagging system was calibrated at the level of $\pm 0.1$. The absolute energy scale was determined using the $e^+e^-$ rate measurements close to the end-point of the photon spectrum. The energy variations across the full tagging range were found to be $<3$ MeV.Comment: 15 pages, 12 figure

ФАКТОРЫ РИСКА И НОЗОКОМИАЛЬНЫЕ ИНФЕКЦИИ, ВЫЗЫВАЕМЫЕ ЭНТЕРОКОККАМИ

Aim: to analyze nosocomial infections and risk factors caused by enterococci. Review of the foreign and domestic literature on biology and virulence factors of enterococci being the leading causative agents of nosocomial infections is done. Information on risk factors and postoperative infectious complications, pathogens of which are enterococci, in surgical hospitals and hospitals for organ transplantations is provided. The growth of antibiotic resistance in enterococci and the relationship between mortality rate and prevalence rate of antibiotic resistant strains are emphasizedЦель: анализ нозокомиальных инфекций и факторов риска, вызываемых энтерококками. Представлен обзор данных зарубежной и отечественной литературы по биологии, факторам вирулентности энтерококков – ведущих возбудителей нозокомиальных инфекций. Приводятся сведения о факторах риска и послеоперационных инфекционных осложнениях, возбудителями которых являются энтерококки, в хирургических клиниках и клиниках по трансплантации органов. Подчеркивается нарастание антибиотикорезистентности энтерококков и связь между показателями летальности и частотой распространения антибиотикорезистентных штаммов

A New Measurement of the π0\pi^0 Radiative Decay Width

High precision measurements of the differential cross sections for $\pi^0$ photoproduction at forward angles for two nuclei, $^{12}$C and $^{208}$Pb, have been performed for incident photon energies of 4.9 - 5.5 GeV to extract the ${\pi^0 \to \gamma\gamma}$ decay width. The experiment was done at Jefferson Lab using the Hall B photon tagger and a high-resolution multichannel calorimeter. The ${\pi^0 \to \gamma\gamma}$ decay width was extracted by fitting the measured cross sections using recently updated theoretical models for the process. The resulting value for the decay width is $\Gamma{(\pi^0 \to \gamma\gamma)} = 7.82 \pm 0.14 ~({\rm stat.}) \pm 0.17 ~({\rm syst.}) ~{\rm eV}$. With the 2.8% total uncertainty, this result is a factor of 2.5 more precise than the current PDG average of this fundamental quantity and it is consistent with current theoretical predictions.Comment: 4 pages, 5 figure

Comment on the narrow structure reported by Amaryan et al

The CLAS Collaboration provides a comment on the physics interpretation of the results presented in a paper published by M. Amaryan et al. regarding the possible observation of a narrow structure in the mass spectrum of a photoproduction experiment.Comment: to be published in Physical Review