Techniques of analysing heat conditions in electron devices of spacecraft

On the bases of thermal macrolevel models of electron device and construction elements the technique of analysing heat conditions of unpressurized electron spacecraft equipment has been developed. The technique involves formation of electric loss sequence diagram for connected thermal and electric analysis, which makes possible to increase the accuracy and reliability of heat analysis for the device and its elements

Una tablilla de maldición de la necrópolis de Panticapeo (SEG LXIII 616) revisitada

The article is devoted to examining readings and establishing the text of one Bosporan magic tablet from Panticapaeum. The author proposes a new text of the inscription with a critical apparatus and discusses a new interpretation of this monument given recently by Eleni Chronopoulou against the broader background of ancient magical practice.El artículo está dedicado a verificar la lectura y establecer el texto de una tablilla mágica de Panticapeo. El autor propone un nuevo texto con aparato crítico de la inscripción y discute la nueva interpretación ofrecida recientemente por Eleni Chronopoulou desde el contexto más amplio de las prácticas mágicas en la Antigüedad

Asymptotics for the number of n-quasigroups of order 4

The asymptotic form of the number of n-quasigroups of order 4 is $3^{n+1} 2^{2^n +1} (1+o(1))$. Keywords: n-quasigroups, MDS codes, decomposability, reducibility.Comment: 15 p., 3 fi

Algorithms for solving inverse geophysical problems on parallel computing systems

For solving inverse gravimetry problems, efficient stable parallel algorithms based on iterative gradient methods are proposed. For solving systems of linear algebraic equations with block-tridiagonal matrices arising in geoelectrics problems, a parallel matrix sweep algorithm, a square root method, and a conjugate gradient method with preconditioner are proposed. The algorithms are implemented numerically on a parallel computing system of the Institute of Mathematics and Mechanics (PCS-IMM), NVIDIA graphics processors, and an Intel multi-core CPU with some new computing technologies. The parallel algorithms are incorporated into a system of remote computations entitled "Specialized Web-Portal for Solving Geophysical Problems on Multiprocessor Computers." Some problems with "quasi-model" and real data are solved. © 2013 Pleiades Publishing, Ltd

Legal and economic components of modern accounting transformation

Complex transformational process characteristics of modern accounting have significantly influenced its three components; the economic, mathematical and legal aspect of modern accounting. Currently the predominant role belongs to the first one, but in the conditions of the digital economy development it is the mathematical one. It should be noted that the importance of commercial secrets prevent the transition to the information flows transparency while significant decrease of the legal accounting aspect can lead to certain quality deterioration of the accounting information. The main idea of this article is not only to discover the negative aspects connected with the weakening of legal accounting aspects, but also to show possible options of modern legal issues and implementations into the accounting practice. One of the main theoretical and methodological problems in this area is the intensive expansion of the multivariate accounting, based on professional judgment, which decreases the accounting procedures’ regulatory role. The authors consider necessary to propose a harmonious and balanced system of informational enrichment of public institutions’ activity of all the ties between the taxation process and its accounting support. As a result of this research, the authors came to the conclusion to structure formal and informal institutions that could influence the organization of accounting at a particular economic level moving from the advisory options of the accounting policy to the elements of discrete financial and business law based on the development of internal standards of economic entities.peer-reviewe

Transformation of value and income indicators and their accounting and analytical support

Purpose: The objective of the article is to identify and evaluate transformational changes related to the degree of usefulness of effective financial indicators formed on the accounting basis. These indicators are extremely important for choosing the most effective investment and economic policy of the stakeholders. Structure/Methodology/Approach: To improve the quality and the value of accounting information, as well as to manage the profits and the value of business entities, the following has been revealed: first, the impact of static and dynamic concept of accounting; second, capabilities and limitations of integration of various accounting models and procedures; third, recommendations allowing adoption of accounting tools to the procedures of increasing standardization in financial statements. Findings: In order to reveal the impact of modern accounting procedures on the system of financial and economic performance indicators, a system of accounting procedures and indicators has been proposed. Practical Implications: The results of this study can be implemented into management practice to improve efficiency of property management for business units. Originality/Value: The core value of the study is to shift emphasis onto the aggregation of accounting and analytical tools for evaluation of property and inclusion of information reliability parameters into the system of financial and economic forecasting of business development.peer-reviewe

Immunologic features of opportunistic pneumonia in patients with HIV infection

The aim of this study is a comparative evaluation immunograms in HIV-infected patients with secondary pulmonary diseases infectious nature, in order to identify criteria for the etiological diagnosis and predictors of severe or complicated course.Целью исследования является сравнительная оценка иммунограмм у ВИЧ-инфицированных пациентов со вторичными заболеваниями легких инфекционной природы, с целью выявления критериев этиологической диагностики и предикторов осложненного или тяжелого течения

Contact ureterolithotripsy of a giant ureteral stone in a 3-year-old child

Giant ureteral stones in young children are extremely rare and their surgical treatment tactics are variable. The present case describes a case of effective and safe endoscopic treatment of giant ureteral stones in a young child. The patient is a 3-year-old male child. Examination findings of abdominal pain and fever verified a left distal ureteric stone up to 30 mm complicated by ureterohydronephrosis. The first treatment stage was ureteral stenting, in which the stone migrated to the middle ureteral third. The second treatment stage was contact ureterolithotripsy with a 9 Ch semi-rigid ureteroscope («Richard Wolf» GmbH, Knittlingen, Germany) and Swiss LithoClast® 2 pneumatic lithotripter («E.M.S. Electro Medical Systems» S.A., Nyon, Suisse), ureteral stenting (2-way PigTail, 4.5 Ch). The third treatment stage in the delayed period was extracorporeal shockwave lithotripsy of the steinstrasse using the Dornier Compact Sigma («Dornier MedTech» GmbH, Weßling, Germany) and stent removal. Residual stones were not revealed according to the follow-up examination. No treatment complications were registered. The multimodal staged treatment of a giant ureteral stone resulted in its complete elimination. Next-step ureteral endoscopy made it possible to identify concomitant pathology of the proximal ureter, which required its evaluation in the delayed period. Ureteral stenting contributed to the restoration of renal function. The result achieved reflects the maximum efficiency and high safety of the surgical technique applied