Top Quark Production Cross Section at the Tevatron

An overview of the preliminary results of the top quark pair production cross section measurements at a center-of-mass energy of 1.96 TeV carried out by the CDF and D0 collaborations is presented. The data samples used for the analyses are collected in the current Tevatron run and correspond to an integrated luminosity from 360 pb-1 up to 760 pb-1.Comment: 4 pages, 5 figures, Proceedings of 41th Rencontres De Moriond: QCD And Hadronic Interactions, 18-25 Mar 2006, La Thuile, Ital

\ttbar and single top cross sections at the Tevatron

We present a summary of the latest measurements of the top pair and single top cross sections performed by the CDF and D0 collaborations at the Fermilab Tevatron collider.Comment: Presented at the 2011 Hadron Collider Physics symposium (HCP-2011), Paris, France, November 14-18 2011, 4 pages, 8 figure

On the Centenary of Yekaterinburg Opera House and Music School n. a. Piotr Tchaikovsky: Archival Researches and Publications

Освещается история архивных изысканий и подготовки к изданию двух монографий: "Живая жизнь театра: вековая панорама, премьеры, мастера", посвященная 100-летию театра оперы и балета, и "Первое музыкальное училище Урала", посвященное 100-летию музыкального училища имени П. И. Чайковского.There is exposed the history of archival researches and sub-editing of two monographs — “The Vivid Life of Theatre: Panorama of the Century, First Nights, Masters” dedicated to the 100th anniversary of the Opera House and “The First Music School” dedicated to the 100th anniversary of the Music School n. a. Piotr Tchaikovsky

Educational Games for Learning Programming Languages

A concept of educational game for learning programming languages is presented. The idea of learning programming languages and improving programming skills through programming game characters’ behavior is described. The learning course description rules for using in games are suggested. The concept is implemented in a game for learning C# programming language. A common game architecture is modified for using in the educational game. The game engine is built on the base of the graphical engine Ogre3D and extended with game logic. The game has been developed as an industry level commercial product and is planned for sale to educational institutions

Personal archiv as the object of sociological research (on the base of Dostavalov”s personal archiv)

This article is about of the personal archive, and we consider it as "field" of sociological research. Sociological focus of the analysis of personal papers is allocated. We describe experience with personal archive, the text of personal papers can show us the structure of archive and value of the author of archive.В данной статье личный архив рассматривается как «поле» социологического исследования, выделяется социологический фокус анализа личных документов. Описывается опыт работы с личным архивом, где открывается возможность в разрозненных текстах личных документов увидеть структуру архива основанную на ценностной позиции его втора

Estimation of Hydrodynamical Model Parameters from the Invariant Spectrum and the Bose-Einstein Correlations of pi-mesons Produced in (pi+/K+)p Interactions at 250 GeV/c

The invariant spectra of pi- mesons produced in (pi+/K+)p interactions at 250 GeV/c are analysed in the framework of the hydrodynamical model of three-dimensionally expanding cylindrically symmetric finite systems. A satisfactory description of experimental data is achieved. The data favour the pattern according to which the hadron matter undergoes predominantly longitudinal expansion and non-relativistic transverse expansion with mean transverse velocity = 0.20(7), and is characterized by a large temperature inhomogeneity in the transverse direction: the extracted freeze-out temperature at the center of the tube and at the transverse rms radius are 140(3) MeV and 82(7) MeV, respectively. The width of the (longitudinal) space-time rapidity distribution of the pion source is found to be Delta eta = 1.36(2). Combining this estimate with results of the Bose-Einstein correlation analysis in the same experiment, one extracts a mean freeze-out time of the source of = 1.4(1) fm/c and its transverse geometrical rms radius, R_G (rms)=1.2(2) fm.Comment: latex, 14 pages, 5 figure