A Probabilistic Approach to Classifying Supernovae Using Photometric Information

This paper presents a novel method for determining the probability that a supernova candidate belongs to a known supernova type (such as Ia, Ibc, IIL, \emph{etc.}), using its photometric information alone. It is validated with Monte Carlo, and both space- and ground- based data. We examine the application of the method to well-sampled as well as poorly sampled supernova light curves and investigate to what extent the best currently available supernova models can be used for typing supernova candidates. Central to the method is the assumption that a supernova candidate belongs to a group of objects that can be modeled; we therefore discuss possible ways of removing anomalous or less well understood events from the sample. This method is particularly advantageous for analyses where the purity of the supernova sample is of the essence, or for those where it is important to know the number of the supernova candidates of a certain type (\emph{e.g.}, in supernova rate studies).Comment: Version accepted for publication in Astrophysical Journa

Improving regional regulatory platform tools for the development of small and medium businesses

Introduction. Taking into account the priorities of the state policy in the field of economic and innovative development of the Perm region, assessment of the regional potential of the digital economy, the strategic importance of economic activities implemented by SMEs for the economy of the region and the country as a whole, the actual impact of the norms on the instruments of development of small and medium-sized enterprises in the Perm region is assessed. The purpose of this study is to improve the regional regulatory platform of tools for the development of small and medium-sized businesses in the Perm region in order to gain the status of an investment-attractive region in the digital economy of the Russian Federation, taking into account the Strategy of the information society in the Russian Federation, which will ultimately contribute to the development of e-business in the Perm region, rehabilitation and competitiveness of the economy of the Perm region in the global market. Methodology. The General methodological basis of the study was the dialectical- materialistic method of cognition of legal reality, which allowed to study the tools of development of small and medium-sized businesses in the Perm region in their development, to consider the problems of tools for the integrated development of small and medium-sized businesses in the Perm region, taking into account the changed socio-economic conditions in inseparable unity with other related tools relevant to the needs of digitalization of society. Such universal scientific methods as analysis and synthesis of doctrinal and normative materials were used in the work. In addition, special legal methods were used: the method of legal modeling, which allows to design possible legal situations using digital tools for the development of small and medium- sized businesses in the Perm region; the method of systematic interpretation used in assessing the actual impact of regional norms on the tools of development of small and medium-sized businesses in the Perm region. Results. The article proposes a new tool for the development of SMEs as a regional electronic platform for the promotion of goods, works and services of SMEs in the Perm region. Attention is paid to the level of digital literacy of SMEs and consumers of their goods, works and services: the conclusion about the lack of digital competence. Conclusion. It is necessary to improve the regional regulatory platform taking into account economic trends: it is important to introduce digital competencies everywhere, including at the professional level in relation to SMEs in the Perm region, in order to increase the business activity of young people and other representatives of the working population. As for the actual introduction of new tools for the development of small and medium-sized businesses in the Perm region, we propose that the regional legislator develop a new electronic information platform at the expense of the regional budget to promote goods, works and services sold by SMEs in the Perm region. We believe that the measures proposed by us to enhance the economic activity of SMEs can be perceived by other regions

Applicability of point dipoles approximation to all-dielectric metamaterials

All-dielectric metamaterials consisting of high-dielectric inclusions in a low-dielectric matrix are considered as a low-loss alternative to resonant metal-based metamaterials. In this contribution we investigate the applicability of the point electric and magnetic dipoles approximation to dielectric meta-atoms on the example of a dielectric ring metamaterial. Despite the large electrical size of high-dielectric meta-atoms, the dipole approximation allows for accurate prediction of the metamaterials properties for the rings with diameters up to ~0.8 of the lattice constant. The results provide important guidelines for design and optimization of all-dielectric metamaterials.Comment: 10 pages, 5 fugures, submitted to Physical Review

The Klein-Gordon Equation and Differential Substitutions of the Form v=φ(u,ux,uy)v=\varphi(u,u_x,u_y)

We present the complete classification of equations of the form $u_{xy}=f(u,u_x,u_y)$ and the Klein-Gordon equations $v_{xy}=F(v)$ connected with one another by differential substitutions $v=\varphi(u,u_x,u_y)$ such that $\varphi_{u_x}\varphi_{u_y}\neq 0$ over the ring of complex-valued variables

Dialectics of Efficient Change Management in the Regional Social Systems

The research has placed emphasis on the role of the social infrastructure sectors, providing social services, which facilitate human potential development in a modern state. Theoretical positions of the scientist considering the nature of social benefits and necessity of the government support for the social sphere has been summarized in the article. The state of the Russian social infrastructure sectors has been considered and the analysis of their performance compared to these of the social infrastructure sectors in other countries has been conducted in the research work. Taking into consideration the performance ratings of the effectiveness of the national education systems, the countries around the world concerning the effectiveness of the health system, the countries around the world concerning the social development level in 2014, the authors have proposed the conceptual approach that makes it possible to consider the correlation and interrelation of the level of the government financing of the social sphere and the dynamics of the contribution of social infrastructure sectors in the development of the human capital, ensuring the gross domestic product increase. The necessity of making innovative changes in the socio-economic systems of the social infrastructure sectors, to improve their performance, taking into account the results obtained, in the first place, in health care, has been wellgrounded and theoretical approaches to the changes management in the socio-economic systems has been studied in the article. The theoretical approaches to the changes management in the socio-economic systems have been studied by the authors. Based on the conducted studies and the formed theoretical basis for improving the level of changes management in open socio-economic systems, for the purpose of development of the theoretical and methodological approaches to changes management as applied to health care sphere, optimization model of management of health care organizations by way of ranking of manageable and unmanageable changes has been proposed. The possibility of using management optimization by way of ranking of manageable and unmanageable changes in the health care management at different levels has been confirmed with high-performance indicators at the micro-, meso- and macro levels in the sector, by the example of implementation of the national project “Health” and innovative organizational changes facilitating the return to work of patients of the working age, which are involved in the gross domestic product formation in the city of Yekaterinburg.The article has been prepared with the support of the Russian Science Foundation grant No. 14-18-00456 “Support of geoecosocioeconomic approach to development of strategic nature resources capacity of the low-studied northern territories within the investment project “Arctic — Central Asia”

Статичні змішувачі в циркуляційних системах промивальної рідини бурових установок

The work of three static mixer designs in flushing fluid circulation systems of drilling rigs was studied taking into account the basic parameters of drilling mud. Modelling was carried out, and parametric slurry fields were obtained in the pipe work area, that is in a static mixer installation site and in the area of pipeline behind it. The following models were obtained: velocity fields, vorticity fields, turbulence intensity fields, scale turbulence fields along the travel path. Graphs of the parameters changes regarding the tube axis were plotted. The comparative analysis of patterns and curves was carried out. The rational design of static mixer for obtaining of optimum mud mixing technology features is grounded.Досліджено роботу трьох конструкцій статичного змішувача в циркуляційній системі промивальної рідини бурових установок, ураховуючи основні параметри бурового розчину. Виконано моделювання та отримано параметричні поля гідросуміші у робочій зоні труби, а саме в місці установки статичного змішувача і в зоні трубопроводу за ним. Отримано моделі: поля швидкостей, поля завихреності, поля інтенсивності турбулентності, поля масштабу турбулентностей по довжині шляху перемішування. Побудовано графіки зміни досліджуваних параметрів відносно осі труби. Виконано порівняльний аналіз моделей та кривих. Обґрунтовано раціональну конструкцію статичного змішувача для отримання оптимальних технологічних характеристик перемішування бурового розчину