Digital representation of continuous observables in Quantum Mechanics

To simulate the quantum systems at classical or quantum computers, it is necessary to reduce continuous observables (e.g. coordinate and momentum or energy and time) to discrete ones. In this work we consider the continuous observables represented in the positional systems as a series of powers of the radix mulitplied over the summands (``digits``), which turn out to be Hermitean operators with discrete spectrum. We investigate the obtained quantum mechanical operators of digits, the commutation relations between them and the effects of choice of numeral system on the lattices and representations. Furthermore, during the construction of the digital representation renormalizations of diverging sums naturally occur.Comment: 25 pages, 10 figures. arXiv admin note: substantial text overlap with arXiv:2009.1361

Argon assisted chemical vapor deposition of CrO2_2: an efficient process leading to high quality epitaxial films

A comparative study of the structural, microstructural and magnetic properties of CrO$_2$ thin films grown onto (110) and (100) TiO$_2$ rutile single crystal substrates by chemical vapor deposition (CVD), using CrO$_3$ as chromium precursor and either oxygen or argon as carrier gas is presented. Our results show that growth under argon carrier gas leads to high quality CrO$_2$ epilayers with structural and magnetic properties similar to those obtained using the more standard oxygen carrier gas. Furthermore, we interpret the larger magnetic coercivity observed for the (110) oriented films in terms of their microstructure, in particular of the highest strain and edge roughness of the building structures of the CrO$_2$ epilayers, which are settled by the substrate crystallographic orientation.Comment: 27 pages, 2 tables, 8 figure

Government control of agrarian field of economics in the conditions of global challenge and threats

Political, economic and social importance of agrarian problems in the Russian Federation has received extremely sharp sound associated with ensuring food security, import substitution of food which requires reasonable macroeconomic and financial government management, including the adaptation of modern measures of government regulation of rural development to the new economic conditions. In this regard, the economic science once again faces with the task of understanding and studying of the theoretical positions and methodological approaches to the development of a new agricultural policy, to the search of optimal forms and methods of government influence on the agricultural market, building a system of cooperation between government, business and the peasantry on the basis of maximal coordination of mechanisms of government regulation of the agrarian sector with the motivational structure of the rural population in terms of adaptation to modern agricultural methods and tools of influence. This article contains the argumentation of the provisions on the development of the system of government regulation of the agrarian sector of the Russian economy in the new economic conditions that will ensure import substitution, increase in the competitiveness of Russia in the global food market.peer-reviewe

Modern state and prospects of dermatoglyphics research in practice of medical-psychological examination of students and youth

The modern state and prospects of the medico-psychological examination of students and young people are analysed by a dermatoglyphics that allows drawing up the psychological portrait of a person. On the basis of typology of digital dermatoglyphics the development of the criteria system for prognostic estimation of physical capabilities of a human being is possible. According to the ratio of norm and pathology areas of the skin markings the hereditary diseases for future posterity, developmental abnormalities, different gene mutations, congenital development defects (limbs development defects as the special case), gender anomalies (sex determination), possible lethal cases, chromosome diseases and other cases can be forecasted with 99 % confidence

Dynamics of nonequilibrium quasiparticles in a double superconducting tunnel junction detector

We study a class of superconductive radiation detectors in which the absorption of energy occurs in a long superconductive strip while the redout stage is provided by superconductive tunnel junctions positioned at the two ends of the strip. Such a device is capable both of imaging and energy resolution. In the established current scheme, well studied from the theoretical and experimental point of view, a fundamental ingredient is considered the presence of traps, or regions adjacent to the junctions made of a superconducting material of lower gap. We reconsider the problem by investigating the dynamics of the radiation induced excess quasiparticles in a simpler device, i.e. one without traps. The nonequilibrium excess quasiparticles can be seen to obey a diffusion equation whose coefficients are discontinuous functions of the position. Based on the analytical solution to this equation, we follow the dynamics of the quasiparticles in the device, predict the signal formation of the detector and discuss the potentiality offered by this configuration.Comment: 16 pages, 5 figures Submitted to Superconducting Science and Technolog

Modern problems of tuberculosis in Ukraine

Проведено аналіз захворюваності на туберкульоз у підлітків. Вивчено ранні та явні його прояви. Проаналізовано ефективність сучасної флюорографії та технології введення БЦЖ. Виявлено що позитивна реакція Манту спостерігається у 16 % випадків і переважно у людей з недиференційованим типом мікобактерій. Установлено, що метод масового флюорографічного дослідження населення, який широко застосовується в Україні, визначає не ранні, а застарілі ущільнені (кальциновані) або деструктивні, у вигляді розпаду, форми туберкульозу.Проведен анализ заболеваемости туберкулезом у подростков. Изучены ранние и явные его проявления. Проанализирована эффективность современной флюорографии и технологии введения БЦЖ. Выявлено что положительная реакция Манту наблюдается в 16% случаев и преимущественно у людей с недифференцированным типом микобактерий. Установлено, что метод массового флюорографического исследования населения, широко применяется в Украине, определяет не ранние, а устаревшие уплотнены (кальцинированные) или деструктивные, в виде распада, формы туберкулеза.Analysis of tuberculosis for the teenagers was conducted and the early and manifestative developments of tuberculosis were studied. The effectiveness of modern fluorography and techniques of BCG (Bacillus Calmette-Guerin) immunisation is analysed. It was found that the positive Mantoux test is observed in 16 % cases and mainly among people with the undifferentiated type of mycobacterium. We suppose that the mass fluorography of people which is obligatory used in Ukraine doesn’t determine early forms but only old indurated (calcinated) or destructive (disintegrated) forms of tuberculosis