34 research outputs found
Idylls of socialism : the Sarajevo Documentary School and the problem of the Bosnian sub-proletariat
This historical overview of the Sarajevo Documentary School considers the films, in the light of their recent re-emergence, as indicative of both the legacy of socialist realism (even in the context of Yugoslav media) and attempted social engineering in the Bosnia of the 1960s and 1970s. The argument is made that the documentaries, despite their questionable aesthetic status (in respect of cinma-vrit and ethnography) and problematic ideological strategies and attempted interventions, document a history and offer insights that counter the prevailing revisionist trends in the presentation of Eastern and Central European history
A Direct Measurement of Hard Two-Photon Exchange with Electrons and Positrons at CLAS12
One of the most surprising discoveries made at Jefferson Lab has been the
discrepancy in the determinations of the proton's form factor ratio between unpolarized cross section measurements and the
polarization transfer technique. Over two decades later, the discrepancy not
only persists but has been confirmed at higher momentum transfers now
accessible in the 12-GeV era. The leading hypothesis for the cause of this
discrepancy, a non-negligible contribution from hard two-photon exchange, has
neither been conclusively proven or disproven. This state of uncertainty not
only clouds our knowledge of one-dimensional nucleon structure but also poses a
major concern for our field's efforts to map out the three-dimensional nuclear
structure. A better understanding of multi-photon exchange over a wide phase
space is needed. We propose making comprehensive measurements of two-photon
exchange over a wide range in momentum transfer and scattering angle using the
CLAS12 detector. Specifically, we will measure the ratio of positron-proton to
electron-proton elastic scattering cross sections, using the proposed positron
beam upgrade for CEBAF. The experiment will use 2.2, 4.4, and 6.6 GeV lepton
beams incident on the standard CLAS12 unpolarized hydrogen target. Data will be
collected by the CLAS12 detector in its standard configuration, except for a
modified trigger to allow the recording of events with beam leptons scattered
into the CLAS12 central detector. The sign of the beam charge, as well as the
polarity of the CLAS12 solenoid and toroid, will be reversed several times in
order to suppress systematics associated with local detector efficiency and
time-dependent detector performance. The proposed high-precision determination
of two-photon effects will be...Comment: Experimental Proposal E12+23-008 submitted to Jefferson Lab PAC 51,
34 pages, 18 figure
Search for axion-like particles through nuclear Primakoff production using the GlueX detector
We report on the results of the first search for the production of axion-like
particles (ALP) via Primakoff production on nuclear targets using the GlueX
detector. This search uses an integrated luminosity of 100
pbnucleon on a C target, and explores the mass region of 200
< < 450 MeV via the decay . This mass range is
between the and masses, which enables the use of the measured
production rate to obtain absolute bounds on the ALP production with
reduced sensitivity to experimental luminosity and detection efficiency. We
find no evidence for an ALP, consistent with previous searches in the quoted
mass range, and present limits on the coupling on the scale of (1 TeV). We
further find that the ALP production limit we obtain is hindered by the peaking
structure of the non-target-related dominant background in GlueX, which we
treat by using data on He to estimate and subtract these backgrounds. We
comment on how this search can be improved in a future higher-statistics
dedicated measurement
Measurement of the helicity asymmetry E for the γ→ p→ → pπ reaction in the resonance region: The CLAS Collaboration
The double-spin-polarization observable E for γ→ p→ → pπ has been measured with the CEBAF Large Acceptance Spectrometer (CLAS) at photon beam energies Eγ from 0.367 to 2.173GeV (corresponding to center-of-mass energies from 1.240 to 2.200GeV) for pion center-of-mass angles, cosθπ0c.m. , between - 0.86 and 0.82. These new CLAS measurements cover a broader energy range and have smaller uncertainties compared to previous CBELSA data and provide an important independent check on systematics. These measurements are compared to predictions as well as new global fits from The George Washington University, Mainz, and Bonn-Gatchina groups. Their inclusion in multipole analyses will allow us to refine our understanding of the single-pion production contribution to the Gerasimov-Drell-Hearn sum rule and improve the determination of resonance properties, which will be presented in a future publication
Investigations of rheological properties of rapeseed oil methyl esters and aviation turbine fuel Jet A-1 blends
Przedstawiono wyniki badań lepkości kinematycznej, temperatury mętnienia, temperatury zablokowania zimnego filtru, lepkości dynamicznej i naprężeń ścinających w funkcji składu mieszanin estrów metylowych oleju rzepakowego (RME) i paliwa lotniczego Jet A-1. Wykazano, że domieszka paliwa Jet A-1 w ilości do 20% objętości istotnie poprawia właściwości reologiczne RME. Podane równania empiryczne mogą służyć do prognozowania właściwości reologicznych mieszanin o różnej zawartości Jet A-1 i RME.The results of investigations of kinematic viscosity, cloud point, cold filter plugging point, dynamic viscosity and shear stress as function of blends composition of rapeseed oil methyl esters (RME) and aviation turbine fuel Jet A-1. It was showed that blending aviation fuel Jet A-1 at rate up to 20% volume significantly improves the rheological properties of RME. The obtained empirical equations can be used to predict the rheological properties of the blends RME and Jet A-1 at any composition
Analysis of diabetic patients hospitalizations in Poland by gender, age and place of residence
Background. There are few updated data on rates of hospital mortality of diabetic patients and length of their hospital
stay on a country level. To determine such rates we provided analysis using claims data from a Nationwide General
Hospital Morbidity Study carried out by the National Institute of Public Health – National Institute of Hygiene (NIPH-
NIH) in Warsaw from 2010 to 2018.
Objective. The aim of the study was to analyze the nine years changes of in-hospital morbidity and mortality in diabetic
patients and length of hospital stay using a comparative approach by gender, age and place of residence.
Material and methods. The data on all patients from general hospitals in Poland treated because of diabetes were taken
from a nationwide database, kept since 1979 by the Department for Monitoring and Analyses of Population Health of
NIPH-NIH. This database contains information gathered under the Statistical Research Program of Public Statistics.
Hospitalization rates were used to evaluate the ‘hospitalized’ incidence of diabetes (number of hospitalization cases due
to diabetes per year by the analyzed unit of population). In-hospital mortality was calculated as the percentage of deceased
patients out of all patients hospitalized due to diabetes.
Results. The number of cases and hospitalization rates of diabetic patients was rapidly declining by 18.8% for type 2
(E11) and 23.7% for type 1 (E10) diabetes. The downward tendency in the scope of hospitalization affected mainly older
women and rural residents. Hospital mortality due to diabetes rose up dangerously to 3.77% exceeding the rates recorded
eight years earlier.
Conclusions. The recent reduction in hospitalization rates of people with diabetes in Poland may be associated with an
unexpected increase in hospital mortality