Language and group identity : the case of gamers community

http://www.ester.ee/record=b4608544*es

Detailed study of the quadrupole mass analyzer operating within the first, second, and third (intermediate) stability regions. I. Analytical approach

The theoretical aspects of ion separation in imperfect fields of the quadrupole mass analyzer operating within the first, second, and third stability regions are discussed by analysis of the beam dynamics in phase-space. The analytical approach uses an approximate solution of the Hill equation with a small heterogeneous part. These calculations indicate that the trap mechanism of ion separation is conditioned by the properties of characteristic solutions. These solutions are reduced to an approximate solution in the form of a general solution of a homogeneous Mathieu equation with combined factors taking into account a small heterogeneous part that defines the region of beam capture (acceptance) in phase-space. The infringement of independence principle of ion oscillations about each of the positional axes caused by distortions increases the cross-sectional area of the beam. The beam is cut out by the mass analyzer aperture. This causes transmission losses that depend on phase. Therefore, the ion current at the mass analyzer exit is amplitude modulated by the frequency of the radiofrequency (rf) component of the field. The maximum current is at zero phase. The modulation depth is proportional to the relative value of the distortions

Constructing Temporal Networks of OSS Programming Language Ecosystems

One of the primary factors that encourage developers to contribute to open source software (OSS) projects is the collaborative nature of OSS development. However, the collaborative structure of these communities largely remains unclear, partly due to the enormous scale of data to be gathered, processed, and analyzed. In this work, we utilize the World Of Code dataset, which contains commit activity data for millions of OSS projects, to build collaboration networks for ten popular programming language ecosystems, containing in total over 290M commits across over 18M projects. We build a collaboration graph representation for each language ecosystem, having authors and projects as nodes, which enables various forms of social network analysis on the scale of language ecosystems. Moreover, we capture the information on the ecosystems' evolution by slicing each network into 30 historical snapshots. Additionally, we calculate multiple collaboration metrics that characterize the ecosystems' states. We make the resulting dataset publicly available, including the constructed graphs and the pipeline enabling the analysis of more ecosystems.Comment: Accepted to SANER 202

Nitric Oxide (NO) and Arginine as Factors for Increasing Poultry Meat Productivity

Nitric oxide (NO) is intensively synthesized in the embryo of birds. There is evidence that NO mediates myogenesis at the embryonic stage. In this regard, it might be possible to control muscle development and meat productivity by modulating NO synthesis. Using high-precision and a highly sensitive enzymatic sensor, the authors found that it is not the rate of synthesis that correlates with meat productivity, but the rate of NO oxidation to nitrate, which occurs in the tissues of the embryo. In broilers, it is several orders of magnitude higher than in layers. This indicator is solely due to the characteristics of embryonic tissues and is allelically determined. In-ovo arginine supplementation, a source of NO, did not lead to a significant increase in its synthesis and oxidation, but occasionally increased live weight gain, which was likely associated with a deficiency of free arginine and was not directly related to the effect of nitric oxide. Exogenous NO donors were oxidized with the same intensity as endogenous donors. These compounds did not have a significant effect on growth rate. Also, a reduction of 50% in the rate of NO synthesis under the action of a NO synthase inhibitor did not affect this parameter. Thus, regulation of poultry meat productivity is possible by modulating gene expression related to embryonic NO oxidation and ensuring an optimal amino acid and energy equilibrium, rather than by promoting embryonic NO synthesis. Keywords: Nitric oxide (NO), NO donor compounds, nitrate, arginine, live weigh

Устаревшие положения норм Российской Федерации,регламентирующих строительство в сейсмических районах

Описаны достижения мультидисциплинарной области научной и практической деятельности сейсмической инженерии (ЕЕ). Констатируется, что задание исходной информации в нормах Российской Федерации отличается от способов и методов, представленных в работах ЕЕ. Обосновывается необходимость совершенствования норм РФ, которая будет заключаться в разработке новых норм с учётом признанных достижений в области сейсмической инженерии, отказе от сейсмического районирования в баллах и представления карт сейсмического районирования в изосейсмах спектров реакций. Считаем необходимым на первом этапе разработать научно-техническое пособие «Спектры максимальных реакций для районов Российской Федерации»

R&D Proposal Development of Micro-Pattern Gas Detector Technologies

Development of advanced gas-avalanche detector technologies and associated electronic-readout systems for applications in basic and applied researc