State Social Policy: Essence, Models, Directions

The article aims at analyzing domestic and foreign experience in social policy provision (the essence of the concept, its basic models and directions), as it acts as a kind of lever to determine the principles, priorities, directions of the social sphere development. The article suggests a new definition of the "social policy" concept through analyzing the content of the category in question. The public administration approach to understanding the "social policy" concept is also outlined. The article identifies the priority directions of transformations in the EU member states’ social policy, which are taking place due to globalization challenges. Based on these areas, the main principles of European social policy are identified, namely: inclusiveness, gender equality, digitalization, support for youth policy development (employment, education), and financial education of citizens. Social policy in such countries as Canada, Germany, China, and Australia is analyzed, and peculiarities of its changes due to the COVID-19 pandemic are considered in the following areas: support for employment, social protection and the unemployed; social support for certain social groups; support for business development. The main means helping to implement the outlined areas are identified, namely: creation of funds to support certain social groups; formation of favorable conditions for lending to small, medium and large businesses; financing of various social programs (providing employment, training, and wage subsidies). The main directions of domestic social policy in the COVID-19 pandemic are also given. Relevant conclusions on domestic and foreign experience in the implementation of social policy are formed. Further research can be related to the issues of creating a mechanism for an effective social policy implementation

ТЕНДЕНЦІЇ ТА ПЕРСПЕКТИВИ РОЗВИТКУ ІНТЕРНЕТ–БАНКІНГУ В УКРАЇНІ

The article describes the Internet banking using of Ukrainian banks. Relevance and importance of online banking services as the dominant direction of banking innovation are formulated. Additionally, the main advantages and benefits of online banking increased use are characterized and systematized separately for banks and customers. The market research of Ukrainian Internet banking are made: the number of banks that use internet banking, services offered online, quality of performance of these services and the system in general, target consumer groups. Besides, each of these components are described in details. Moreover, the key issues of Ukrainian banks in Internet banking are elucidated, the ways to address them using foreign experience are offered. Finally the prospects and directions of online banking services further development in Ukraine are made.В статье раскрыты вопросы использования интернет–банкинга украинскими банками. Сформулировано актуальность и важность развития банковских онлайн услуг как доминирующего направления банковских инноваций. Систематизированы и охарактеризованы основные преимущества и выгоды активизации использования интернет–банкинга отдельно для банковских учреждений и для клиентов. Осуществлено исследование состояния украинского рынка интернет–банкинга: количество банковских учреждений, которые применяют интернет–банкинг, перечень услуг, предлагаемых онлайн, качественный уровень выполнения этих услуг и работы системы в целом, сегментация потребителей. Освещены ключевые проблемы работы украинских банков в сфере интернет–банкинга, предложены пути их устранения с использованием зарубежного опыта. Сделаны выводы о перспективах и направлениях дальнейшего развития банковских онлайн услуг в Украине.У статті розкрито питання використання інтернет–банкінгу українськими банками. Сформульовано актуальність і важливість розвитку банківських онлайн послуг як домінуючого напрямку банківських інновацій. Систематизовано та охарактеризовано основні переваги та вигоди активізації використання інтернет–банкінгу окремо для банківських установ та для клієнтів. Здійснено дослідження стану українського ринку інтернет–банкінгу: кількість банківських установ, які застосовують інтернет–банкінг, перелік послуг, які пропонуються онлайн, якісний рівень виконання цих послуг та роботи системи загалом, цільові групи споживачів. Висвітлено ключові проблеми роботи українських банків у сфері інтернет–банкінгу, запропоновано шляхи їх усунення з використанням закордонного досвіду. Зроблено висновки про перспективи та напрями подальшого розвитку банківських онлайн послуг в Україні

Development and validation of HERWIG 7 tunes from CMS underlying-event measurements

This paper presents new sets of parameters (“tunes”) for the underlying-event model of the HERWIG7 event generator. These parameters control the description of multiple-parton interactions (MPI) and colour reconnection in HERWIG7, and are obtained from a fit to minimum-bias data collected by the CMS experiment at s=0.9, 7, and 13Te. The tunes are based on the NNPDF 3.1 next-to-next-to-leading-order parton distribution function (PDF) set for the parton shower, and either a leading-order or next-to-next-to-leading-order PDF set for the simulation of MPI and the beam remnants. Predictions utilizing the tunes are produced for event shape observables in electron-positron collisions, and for minimum-bias, inclusive jet, top quark pair, and Z and W boson events in proton-proton collisions, and are compared with data. Each of the new tunes describes the data at a reasonable level, and the tunes using a leading-order PDF for the simulation of MPI provide the best description of the dat

Measurement of the top quark forward-backward production asymmetry and the anomalous chromoelectric and chromomagnetic moments in pp collisions at √s = 13 TeV

Abstract The parton-level top quark (t) forward-backward asymmetry and the anomalous chromoelectric (d̂ t) and chromomagnetic (μ̂ t) moments have been measured using LHC pp collisions at a center-of-mass energy of 13 TeV, collected in the CMS detector in a data sample corresponding to an integrated luminosity of 35.9 fb−1. The linearized variable AFB(1) is used to approximate the asymmetry. Candidate t t ¯ events decaying to a muon or electron and jets in final states with low and high Lorentz boosts are selected and reconstructed using a fit of the kinematic distributions of the decay products to those expected for t t ¯ final states. The values found for the parameters are AFB(1)=0.048−0.087+0.095(stat)−0.029+0.020(syst),μ̂t=−0.024−0.009+0.013(stat)−0.011+0.016(syst), and a limit is placed on the magnitude of | d̂ t| < 0.03 at 95% confidence level. [Figure not available: see fulltext.

Measurement of t(t)over-bar normalised multi-differential cross sections in pp collisions at root s=13 TeV, and simultaneous determination of the strong coupling strength, top quark pole mass, and parton distribution functions

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An embedding technique to determine ττ backgrounds in proton-proton collision data

An embedding technique is presented to estimate standard model tau tau backgrounds from data with minimal simulation input. In the data, the muons are removed from reconstructed mu mu events and replaced with simulated tau leptons with the same kinematic properties. In this way, a set of hybrid events is obtained that does not rely on simulation except for the decay of the tau leptons. The challenges in describing the underlying event or the production of associated jets in the simulation are avoided. The technique described in this paper was developed for CMS. Its validation and the inherent uncertainties are also discussed. The demonstration of the performance of the technique is based on a sample of proton-proton collisions collected by CMS in 2017 at root s = 13 TeV corresponding to an integrated luminosity of 41.5 fb(-1).Peer reviewe

Search for Physics beyond the Standard Model in Events with Overlapping Photons and Jets

Results are reported from a search for new particles that decay into a photon and two gluons, in events with jets. Novel jet substructure techniques are developed that allow photons to be identified in an environment densely populated with hadrons. The analyzed proton-proton collision data were collected by the CMS experiment at the LHC, in 2016 at root s = 13 TeV, and correspond to an integrated luminosity of 35.9 fb(-1). The spectra of total transverse hadronic energy of candidate events are examined for deviations from the standard model predictions. No statistically significant excess is observed over the expected background. The first cross section limits on new physics processes resulting in such events are set. The results are interpreted as upper limits on the rate of gluino pair production, utilizing a simplified stealth supersymmetry model. The excluded gluino masses extend up to 1.7 TeV, for a neutralino mass of 200 GeV and exceed previous mass constraints set by analyses targeting events with isolated photons.Peer reviewe

Measurement of the Splitting Function in &ITpp &ITand Pb-Pb Collisions at root&ITsNN&IT=5.02 TeV

Data from heavy ion collisions suggest that the evolution of a parton shower is modified by interactions with the color charges in the dense partonic medium created in these collisions, but it is not known where in the shower evolution the modifications occur. The momentum ratio of the two leading partons, resolved as subjets, provides information about the parton shower evolution. This substructure observable, known as the splitting function, reflects the process of a parton splitting into two other partons and has been measured for jets with transverse momentum between 140 and 500 GeV, in pp and PbPb collisions at a center-of-mass energy of 5.02 TeV per nucleon pair. In central PbPb collisions, the splitting function indicates a more unbalanced momentum ratio, compared to peripheral PbPb and pp collisions.. The measurements are compared to various predictions from event generators and analytical calculations.Peer reviewe

Measurement of prompt open-charm production cross sections in proton-proton collisions at root s=13 TeV

The production cross sections for prompt open-charm mesons in proton-proton collisions at a center-of-mass energy of 13TeV are reported. The measurement is performed using a data sample collected by the CMS experiment corresponding to an integrated luminosity of 29 nb(-1). The differential production cross sections of the D*(+/-), D-+/-, and D-0 ((D) over bar (0)) mesons are presented in ranges of transverse momentum and pseudorapidity 4 < p(T) < 100 GeV and vertical bar eta vertical bar < 2.1, respectively. The results are compared to several theoretical calculations and to previous measurements.Peer reviewe

Measurement of nuclear modification factors of gamma(1S)), gamma(2S), and gamma(3S) mesons in PbPb collisions at root s(NN)=5.02 TeV

The cross sections for ϒ(1S), ϒ(2S), and ϒ(3S) production in lead-lead (PbPb) and proton-proton (pp) collisions at √sNN = 5.02 TeV have been measured using the CMS detector at the LHC. The nuclear modification factors, RAA, derived from the PbPb-to-pp ratio of yields for each state, are studied as functions of meson rapidity and transverse momentum, as well as PbPb collision centrality. The yields of all three states are found to be significantly suppressed, and compatible with a sequential ordering of the suppression, RAA(ϒ(1S)) > RAA(ϒ(2S)) > RAA(ϒ(3S)). The suppression of ϒ(1S) is larger than that seen at √sNN = 2.76 TeV, although the two are compatible within uncertainties. The upper limit on the RAA of ϒ(3S) integrated over pT, rapidity and centrality is 0.096 at 95% confidence level, which is the strongest suppression observed for a quarkonium state in heavy ion collisions to date. © 2019 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3.Peer reviewe