«Having lost his homeland, he gained recognition in a foreign land...». Life and fate of the russian military engineer Vladimir Apollonovich Antonov

Introduction. The article examines the trajectory of the life of a representative of the officer corps of the Russian Imperial Army, military engineer Vladimir Apollonovich Antonov. This choice is explained by the fact that recently the issues of studying the biographies of representatives of Russian emigration have become very relevant.Materials and methods. The authors of the article conducted a microhistoric study of the fate of one of these representatives, which demonstrated both typical and special episodes from his life. The basis of the work was the data of Address calendars and Commemorative books of the Vyatka and Tambov provinces, materials of the State Archive of the Tambov region and the Russian State Military Historical Archive.Results. As a result of studying various sources, it was possible to compile a description of our hero's youthful years during his studies in Tambov. Consider the nuances associated with obtaining a military education, starting service, acquiring the first combat experience and completing training at the military academy. Having studied the documents of the period of the First World War, the authors were able to trace the combat path of Vladimir Apollonovich, who was awarded several awards. During the "troubled" period of the Civil War, it was possible to find out the fact of his participation in the ranks of the white movement and emigration. The apotheosis of the research was the fate of V.A. Antonov abroad, where he was able to realize his vocation and enter the history of the city of Kumanovo. In addition, the result of the work was the clarification of some inaccuracies and errors made earlier in the works of some researchers.Conclusion. Conducting such studies allows us to give an objective assessment of the multifaceted fate of the Russian military emigration, which represented an impressive layer of our compatriots who found themselves in the Kingdom of Serbs, Croats and Slovenes

Natural Movement and Migration of the Population of the Central Black Earth Region of Russia in the Context of Urbanisation and Conservative Modernisation of the 20th–21st Centuries

Поступила в редакцию: 11.06.2020. Принята к печати: 23.06.2021.Submitted: 11.06.2020. Accepted: 23.06.2021.Целью статьи является комплексное изучение естественных и миграционных аспектов движения сельского населения России на протяжении XX — начала XXI в. под воздействием урбанизации и консервативной модернизации. Авторы исходили из необходимости учета не только убыли, но и перемещения сельского населения России. Статья основана на данных всеобщих переписей, материалах текущего учета населения областного, районного и поселенного уровней одного из успешных по российским меркам аграрных регионов — Центрального Черноземья. Данные источников обработаны количественными методами, включая моделирование демографических процессов прошлого, что позволяет верифицировать сведения официальных документов. В статье делается вывод об упрощенности тезиса о всеобщем «вымирании» русской деревни. Материалы истории Центрального Черноземья свидетельствуют о постоянно меняющейся демографической ситуации на уровне отдельных областей, районов и поселений. Откаты в процессе депопуляции, консервативная демографическая модернизация, особенно обратное перемещение горожан в сельскую местность, способствуют сохранению «островков устойчивости» в аграрном секторе. В черноземных областях остаются десятки районов и сотни населенных пунктов, где продолжается естественный прирост и миграционный приток жителей. Авторы утверждают, что избыточное с точки зрения потребностей современного сельского хозяйства население будет продолжать мигрировать. Вместе с тем на основании материалов последних десятилетий высказывается предположение о том, что в сельскую местность будет прибывать определенное число людей, предпочитающих сельский образ жизни или стремящихся пережить там кризисные времена. Наблюдаемая в критические периоды обратная миграция в сельскую местность позволяла и позволяет амортизировать непрерывную убыль сельского населения.This paper aims to present a comprehensive study of the natural and migration movement of the rural population of Russia over several periods of the twentieth and early twenty-first centuries. The authors proceed from the premise that it is necessary to consider not only the decline of Russia’s rural population but also its movement. The article refers to the data of general censuses and vital records of the population at the regional, district, and settlement levels in one of the most successful agrarian regions by Russian standards, i.e. the Central Black Earth Region. The authors process the information from the sources employing various quantitative methods, including modeling demographic processes of the past, which helps verify the information of official documents. It is concluded that the idea of the general “extinction” of the Russian countryside is oversimplified. Historical data of the Central Black Earth Region testify to the constantly changing, different directions of demographic processes at the level of individual regions, districts, and settlements. Backsliding due to the process of depopulation, conservative demographic modernisation, and especially the transfer of urban dwellers back to rural areas contribute to the preservation of “islands of stability”. There are still dozens of districts and hundreds of settlements in the Central Black Earth Region characterised by natural growth and migration influx. The authors argue that a population which is excessive in terms of the needs of modern agriculture will continue to migrate. At the same time, based on the data of last decades, it is suggested that a certain number of people will be staying in the countryside as well as relocating there — those preferring a rural lifestyle in general or seeking to survive there in times of crisis. The reverse migration to rural areas observed during critical periods made it possible and continues to amortise the continuous decline of the rural population.Статья подготовлена при финансовой поддержке Российского научного фонда, грант № 18-18-00187 «Стратегии демографического поведения сельского населения юга Центральной России в XX — начале XXI в.».The work is sponsored by the Russian Science Foundation, grant 18-18-00187 “Strategies of Demographic Behaviour of Rural Population of South-Central Russia in the 20th — Early 21st Centuries”

Search for the standard model Higgs boson in the H to ZZ to 2l 2nu channel in pp collisions at sqrt(s) = 7 TeV

A search for the standard model Higgs boson in the H to ZZ to 2l 2nu decay channel, where l = e or mu, in pp collisions at a center-of-mass energy of 7 TeV is presented. The data were collected at the LHC, with the CMS detector, and correspond to an integrated luminosity of 4.6 inverse femtobarns. No significant excess is observed above the background expectation, and upper limits are set on the Higgs boson production cross section. The presence of the standard model Higgs boson with a mass in the 270-440 GeV range is excluded at 95% confidence level.Comment: Submitted to JHE

Combined search for the quarks of a sequential fourth generation

Results are presented from a search for a fourth generation of quarks produced singly or in pairs in a data set corresponding to an integrated luminosity of 5 inverse femtobarns recorded by the CMS experiment at the LHC in 2011. A novel strategy has been developed for a combined search for quarks of the up and down type in decay channels with at least one isolated muon or electron. Limits on the mass of the fourth-generation quarks and the relevant Cabibbo-Kobayashi-Maskawa matrix elements are derived in the context of a simple extension of the standard model with a sequential fourth generation of fermions. The existence of mass-degenerate fourth-generation quarks with masses below 685 GeV is excluded at 95% confidence level for minimal off-diagonal mixing between the third- and the fourth-generation quarks. With a mass difference of 25 GeV between the quark masses, the obtained limit on the masses of the fourth-generation quarks shifts by about +/- 20 GeV. These results significantly reduce the allowed parameter space for a fourth generation of fermions.Comment: Replaced with published version. Added journal reference and DO

Measurement of the t t-bar production cross section in the dilepton channel in pp collisions at sqrt(s) = 7 TeV

The t t-bar production cross section (sigma[t t-bar]) is measured in proton-proton collisions at sqrt(s) = 7 TeV in data collected by the CMS experiment, corresponding to an integrated luminosity of 2.3 inverse femtobarns. The measurement is performed in events with two leptons (electrons or muons) in the final state, at least two jets identified as jets originating from b quarks, and the presence of an imbalance in transverse momentum. The measured value of sigma[t t-bar] for a top-quark mass of 172.5 GeV is 161.9 +/- 2.5 (stat.) +5.1/-5.0 (syst.) +/- 3.6(lumi.) pb, consistent with the prediction of the standard model.Comment: Replaced with published version. Included journal reference and DO

Search for anomalous t t-bar production in the highly-boosted all-hadronic final state

A search is presented for a massive particle, generically referred to as a Z', decaying into a t t-bar pair. The search focuses on Z' resonances that are sufficiently massive to produce highly Lorentz-boosted top quarks, which yield collimated decay products that are partially or fully merged into single jets. The analysis uses new methods to analyze jet substructure, providing suppression of the non-top multijet backgrounds. The analysis is based on a data sample of proton-proton collisions at a center-of-mass energy of 7 TeV, corresponding to an integrated luminosity of 5 inverse femtobarns. Upper limits in the range of 1 pb are set on the product of the production cross section and branching fraction for a topcolor Z' modeled for several widths, as well as for a Randall--Sundrum Kaluza--Klein gluon. In addition, the results constrain any enhancement in t t-bar production beyond expectations of the standard model for t t-bar invariant masses larger than 1 TeV.Comment: Submitted to the Journal of High Energy Physics; this version includes a minor typo correction that will be submitted as an erratu

Search for new physics with same-sign isolated dilepton events with jets and missing transverse energy

A search for new physics is performed in events with two same-sign isolated leptons, hadronic jets, and missing transverse energy in the final state. The analysis is based on a data sample corresponding to an integrated luminosity of 4.98 inverse femtobarns produced in pp collisions at a center-of-mass energy of 7 TeV collected by the CMS experiment at the LHC. This constitutes a factor of 140 increase in integrated luminosity over previously published results. The observed yields agree with the standard model predictions and thus no evidence for new physics is found. The observations are used to set upper limits on possible new physics contributions and to constrain supersymmetric models. To facilitate the interpretation of the data in a broader range of new physics scenarios, information on the event selection, detector response, and efficiencies is provided.Comment: Published in Physical Review Letter

Search for a W' boson decaying to a bottom quark and a top quark in pp collisions at sqrt(s) = 7 TeV

Results are presented from a search for a W' boson using a dataset corresponding to 5.0 inverse femtobarns of integrated luminosity collected during 2011 by the CMS experiment at the LHC in pp collisions at sqrt(s)=7 TeV. The W' boson is modeled as a heavy W boson, but different scenarios for the couplings to fermions are considered, involving both left-handed and right-handed chiral projections of the fermions, as well as an arbitrary mixture of the two. The search is performed in the decay channel W' to t b, leading to a final state signature with a single lepton (e, mu), missing transverse energy, and jets, at least one of which is tagged as a b-jet. A W' boson that couples to fermions with the same coupling constant as the W, but to the right-handed rather than left-handed chiral projections, is excluded for masses below 1.85 TeV at the 95% confidence level. For the first time using LHC data, constraints on the W' gauge coupling for a set of left- and right-handed coupling combinations have been placed. These results represent a significant improvement over previously published limits.Comment: Submitted to Physics Letters B. Replaced with version publishe

Azimuthal anisotropy of charged particles at high transverse momenta in PbPb collisions at sqrt(s[NN]) = 2.76 TeV

The azimuthal anisotropy of charged particles in PbPb collisions at nucleon-nucleon center-of-mass energy of 2.76 TeV is measured with the CMS detector at the LHC over an extended transverse momentum (pt) range up to approximately 60 GeV. The data cover both the low-pt region associated with hydrodynamic flow phenomena and the high-pt region where the anisotropies may reflect the path-length dependence of parton energy loss in the created medium. The anisotropy parameter (v2) of the particles is extracted by correlating charged tracks with respect to the event-plane reconstructed by using the energy deposited in forward-angle calorimeters. For the six bins of collision centrality studied, spanning the range of 0-60% most-central events, the observed v2 values are found to first increase with pt, reaching a maximum around pt = 3 GeV, and then to gradually decrease to almost zero, with the decline persisting up to at least pt = 40 GeV over the full centrality range measured.Comment: Replaced with published version. Added journal reference and DO

Compressed representation of a partially defined integer function over multiple arguments

In OLAP (OnLine Analitical Processing) data are analysed in an n-dimensional cube. The cube may be represented as a partially defined function over n arguments. Considering that often the function is not defined everywhere, we ask: is there a known way of representing the function or the points in which it is defined, in a more compact manner than the trivial one