1,476 research outputs found
Charm, Beauty and Top at HERA
Results on open charm and beauty production and on the search for top
production in high-energy electron-proton collisions at HERA are reviewed. This
includes a discussion of relevant theoretical aspects, a summary of the
available measurements and measurement techniques, and their impact on improved
understanding of QCD and its parameters, such as parton density functions and
charm- and beauty-quark masses. The impact of these results on measurements at
the LHC and elsewhere is also addressed.Comment: 103 pages, 60 figures, to be published in Prog. Part. Nucl. Phy
УНІВЕРСИТЕТСЬКІ КЛІНІКИ В РОЗВИТКУ ВИЩОЇ МЕДИЧНОЇ ОСВІТИ
The course of modern Ukrainetowards European integration and higher medical education conformance to international standards determines the relevance of the role of the university clinic in the development of higher medical education. The results of attempts to define the role of the University clinic in the development of national higher medical education, directions of development and optimal model of the University Clinic in current conditions by analyzing existing European and national models of university clinics, and experience of scientific medical complex “University Clinic” of Kharkiv National Medical University work are set forth. The model of the University Clinic, which will facilitate the feasibility of potential of medical university, with numerous clinical departments as coordinator of educational, scientific and treatment activity and international cooperation is proposed.Сучасний курс України на євроінтеграцію та відповідність вищої медичної освіти міжнародним стандартам визначає актуальність питання про роль університетської клініки в розвитку вищої медичної освіти. У статті викладені результати спроби визначити роль університетської клініки в розвитку вітчизняної вищої медичної освіти, напрямки розвитку та оптимальну модель університетської клініки в сучасних вітчизняних умовах на основі аналізу існуючих європейських та вітчизняних моделей університетських клінік та досвіду роботи Навчально-наукового медичного комплексу «Університетська клініка» Харківського національного медичного університету. Пропонується модель університетської клініки, яка сприятиме можливості реалізації потенціалу медичного університету, з численними клінічними кафедрами, як координатора навчально-науково-лікувального процесу та міжнародного співробітництва
РОЛЬ СУЧАСНИХ ІНФОРМАЦІЙНИХ ТЕХНОЛОГІЙ У ЗАБЕЗПЕЧЕННІ ЯКОСТІ МЕДИЧНОЇ ОСВІТИ
The aim of the work – to improve the quality of medical education through the use of modern information technologies.
The main body. The article presents the role of modern information technologies in ensuring the quality of medical education. The reform of the health care system requires consistent changes in the training of a modern specialist with an appropriate level of competence, knowledge of the theoretical knowledge and practical skills prepared for market relations in the field of medical services provision. One of the most important prerequisites for ensuring the quality of higher medical education is the introduction of a new level of e-learning or “open learning” in the educational process, which is especially important for the training of a modern specialist.
Conclusion. In order to improve the quality of medical education, it is necessary to take into account certain peculiarities of medical e-education, in particular its practical content, standardization of decision-making in the medical and diagnostic direction (protocols of medical aid provision), strengthening of the requirements for acquiring skills of the manager of the medical industry, readiness for work in the labor market and medical services.Мета роботи – з’ясувати вплив інформаційних технологій у трансформації післядипломної медичної освіти.
Основна частина. У статті наведено роль сучасних інформаційних технологій у забезпеченні якості медичної освіти. Реформа системи охорони здоров’я потребує послідовних змін у підготовці сучасного фахівця з належним рівнем компетентностей, володіння теоретичними знаннями та практичними навичками, підготовленого до ринкових відносин у питаннях надання медичних послуг. Однією з важливих передумов забезпечення якості вищої медичної освіти є впровадження в навчальний процес електронної освіти (e-learning) нового рівня або «відкритого навчання», що є особливо важливим для підготовки сучасного фахівця.
Висновок. З метою поліпшення якості медичної освіти необхідне урахування певних особливостей медичної електронної освіти, зокрема її практично-орієнтованого змісту, стандартизації прийняття рішень лікувально-діагностичного спрямування (протоколи надання медичної допомоги), посилення вимог до набуття навичок менеджера медичної галузі, готовності до роботи на ринку праці та медичних послуг
Prompt atmospheric neutrino fluxes: perturbative QCD models and nuclear effects
We evaluate the prompt atmospheric neutrino flux at high energies using three
different frameworks for calculating the heavy quark production cross section
in QCD: NLO perturbative QCD, factorization including low-
resummation, and the dipole model including parton saturation. We use QCD
parameters, the value for the charm quark mass and the range for the
factorization and renormalization scales that provide the best description of
the total charm cross section measured at fixed target experiments, at RHIC and
at LHC. Using these parameters we calculate differential cross sections for
charm and bottom production and compare with the latest data on forward charm
meson production from LHCb at TeV and at TeV, finding good agreement
with the data. In addition, we investigate the role of nuclear shadowing by
including nuclear parton distribution functions (PDF) for the target air
nucleus using two different nuclear PDF schemes. Depending on the scheme used,
we find the reduction of the flux due to nuclear effects varies from to
at the highest energies. Finally, we compare our results with the
IceCube limit on the prompt neutrino flux, which is already providing valuable
information about some of the QCD models.Comment: 61 pages, 25 figures, 11 table
Combined QCD and electroweak analysis of HERA data
A simultaneous fit of parton distribution functions (PDFs) and electroweak
parameters to HERA data on deep inelastic scattering is presented. The input
data are the neutral current and charged current inclusive cross sections which
were previously used in the QCD analysis leading to the HERAPDF2.0 PDFs. In
addition, the polarisation of the electron beam was taken into account for the
ZEUS data recorded between 2004 and 2007. Results on the vector and
axial-vector couplings of the Z boson to u- and d-type quarks, on the value of
the electroweak mixing angle and the mass of the W boson are presented. The
values obtained for the electroweak parameters are in agreement with Standard
Model predictions.Comment: 32 pages, 10 figures, accepted by Phys. Rev. D. Small corrections
from proofing process and small change to Fig. 12 and Table
Limits on the effective quark radius from inclusive scattering at HERA
The high-precision HERA data allows searches up to TeV scales for Beyond the
Standard Model contributions to electron-quark scattering. Combined
measurements of the inclusive deep inelastic cross sections in neutral and
charged current scattering corresponding to a luminosity of around 1
fb have been used in this analysis. A new approach to the beyond the
Standard Model analysis of the inclusive data is presented; simultaneous
fits of parton distribution functions together with contributions of "new
physics" processes were performed. Results are presented considering a finite
radius of quarks within the quark form-factor model. The resulting 95% C.L.
upper limit on the effective quark radius is cm.Comment: 10 pages, 4 figures, accepted by Phys. Lett.
Search for a narrow baryonic state decaying to and in deep inelastic scattering at HERA
A search for a narrow baryonic state in the and
system has been performed in collisions at HERA with the ZEUS detector
using an integrated luminosity of 358 pb taken in 2003-2007. The search
was performed with deep inelastic scattering events at an centre-of-mass
energy of 318 GeV for exchanged photon virtuality, , between 20 and 100
. Contrary to evidence presented for such a state around 1.52
GeV in a previous ZEUS analysis using a sample of 121 pb taken in
1996-2000, no resonance peak was found in the invariant-mass
distribution in the range 1.45-1.7 GeV. Upper limits on the production cross
section are set.Comment: 16 pages, 4 figures, accepted by Phys. Lett. B. Minor changes from
journal reviewing process, including a small correction to figure
Measurement of the cross-section ratio sigma_{psi(2S)}/sigma_{J/psi(1S)} in deep inelastic exclusive ep scattering at HERA
The exclusive deep inelastic electroproduction of and
at an centre-of-mass energy of 317 GeV has been studied with the ZEUS
detector at HERA in the kinematic range GeV,
GeV and GeV, where is the photon virtuality, is the
photon-proton centre-of-mass energy and is the squared four-momentum
transfer at the proton vertex. The data for GeV were taken in
the HERA I running period and correspond to an integrated luminosity of 114
pb. The data for GeV are from both HERA I and HERA II
periods and correspond to an integrated luminosity of 468 pb. The decay
modes analysed were and for the
and for the . The cross-section ratio
has been measured as a function of
and . The results are compared to predictions of QCD-inspired
models of exclusive vector-meson production.Comment: 24 pages, 8 figure
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