Photon correlations for colloidal nanocrystals and their clusters

Images of semiconductor `dot in rods' and their small clusters are studied by measuring the second-order correlation function with a spatially resolving ICCD camera. This measurement allows one to distinguish between a single dot and a cluster and, to a certain extent, to estimate the number of dots in a cluster. A more advanced measurement is proposed, based on higher-order correlations, enabling more accurate determination of the number of dots in a small cluster. Nonclassical features of the light emitted by such a cluster are analyzed.Comment: 4 pages, 4 figure

Photon correlations for colloidal nanocrystals and their clusters

Images of semiconductor “dot-in-rods” and their small clusters are studied by measuring the second-order correlation function with a spatially resolving intensified CCD camera. This measurement allows one to distinguish between a single dot and a cluster and, to a certain extent, to estimate the number of dots in a cluster. A more advanced measurement is proposed, based on higher-order correlations, enabling more accurate determination of the number of dots in a small cluster. Nonclassical features of the light emitted by such a cluster are analyzed

Pluripolarity of Graphs of Denjoy Quasianalytic Functions of Several Variables

In this paper we prove pluripolarity of graphs of Denjoy quasianalytic functions of several variables on the spanning se

Educational and cognitive independence of students in e-learning

Topicality of the topic is driven by the changed social and economic conditions in Russia, that led to the search for educational paradigms adequate to the new social and economic development of the country, and by the rapid growth of the role of information technologies as well as by the need to improve the professionalism of teachers in their use of computer technologies in education. The aim of the article is to draw the attention of the pedagogical community to the actual forms of e-learning in modern educational practice of Russian education. The leading approach to the study of this problem is the analysis of world and Russian experience of using e-learning in order to strengthen the independence of students. The recommendations on the implementation of e-learning in the context of Russian education were suggested as the result of the research. The material of the article can be useful for teachers seeking to apply modern methods and technologies of teaching. © Authors

Bulk Universality and Related Properties of Hermitian Matrix Models

We give a new proof of universality properties in the bulk of spectrum of the hermitian matrix models, assuming that the potential that determines the model is globally $C^{2}$ and locally $C^{3}$ function (see Theorem \ref{t:U.t1}). The proof as our previous proof in \cite{Pa-Sh:97} is based on the orthogonal polynomial techniques but does not use asymptotics of orthogonal polynomials. Rather, we obtain the $sin$-kernel as a unique solution of a certain non-linear integro-differential equation that follows from the determinant formulas for the correlation functions of the model. We also give a simplified and strengthened version of paper \cite{BPS:95} on the existence and properties of the limiting Normalized Counting Measure of eigenvalues. We use these results in the proof of universality and we believe that they are of independent interest

On universality of local edge regime for the deformed Gaussian Unitary Ensemble

We consider the deformed Gaussian ensemble $H_n=H_n^{(0)}+M_n$ in which $H_n^{(0)}$ is a hermitian matrix (possibly random) and $M_n$ is the Gaussian unitary random matrix (GUE) independent of $H_n^{(0)}$. Assuming that the Normalized Counting Measure of $H_n^{(0)}$ converges weakly (in probability if random) to a non-random measure $N^{(0)}$ with a bounded support and assuming some conditions on the convergence rate, we prove universality of the local eigenvalue statistics near the edge of the limiting spectrum of $H_n$.Comment: 25 pages, 2 figure

Towards the Conceptualization of Occupations and Professions’ Explosion

Received: 20.09.2020. Accepted: 19.10.2020.Рукопись поступила в редакцию: 20.09.2020. Принята к публикации: 19.10.2020.The paper proposes the mainstreaming of the conceptual potential of Yu. M. Lotman (1922–1993) and M. K. Petrov (1923–1987) scientifi c and philosophical heritage relating to the theory of explosive complexity, increasing diversity and instability, which our society has recently been observing in occupational, vocational and professional spheres and the related social institutions (professional associations, professional education, professional guidance, etc.). Heterogeneous and heteronomic being-in-common (Fr. partage) in light of the works of J.-L. Nancy (b. 1940) is the most important heuristic intuition of the proposed updating. It allows one to think through a single, but flexible, multi-directionally transformable and polysemantic framework for the future theory of rapidly updated professional diversity, its explanation, forecast of likely development scenarios and strategies for self-determination within it and management strategies in relation to it. The authors present the conceptual unfolding of the intuition of being-in-common (partage) to be compatible with both the theoretical provisions of the semiotics of culture of Yu. М. Lotman and the socio-cultural dynamics of M. K. Petrov. Professionology is still searching for a methodological platform that would complement its retrospective generalizations and interdisciplinary discontinuity. The actualization of the potential of the concept of compatibility allows it to consolidate multidisciplinary research and its results and to guide them along the path of careful and, at the same time, bold theoretical construction in accordance with what social processes declare themselves to be. The authors observe the readiness of today’s multidisciplinary discourse to unite on such a methodological platform that allows for not to being lost in it under the influence of priorities and presumptions that are inevitable for the methodology, but, at the same time, focusing the collective efforts of occupational researchers on the most promising and practice-oriented aspects of the subject of their research.Предлагается актуализация концептуального потенциала научно-философского наследия Ю. М. Лотмана (1922–1993) и М. К. Петрова (1923–1987) в направлении теории взрывного усложнения, роста многообразия и нестабильности, наблюдаемых в последнее время в сфере занятий человека, профессий и связанных с ними институций (профессиональных сообществ, профессионального образования, профориентологии и др.). Гетерогенная и гетерономная совместность (фр. partage) в свете работ Ж.-Л. Нанси (р. 1940) — важнейшая эвристическая интуиция предлагаемой актуализации. Она позволяет продумать единую, но подвижную, разнонаправленно трансформируемую и полисемантическую рамку будущей теории ускоренно обновляемого профессионального многообразия, его объяснения, прогноза вероятных сценариев развития и стратегий самоопределения в нем и управленческих стратегий в его отношении. Концептуальная развертка интуиции совместности представлена совместимой и с теоретическими положениями семиотики культуры Ю. М. Лотмана и социокультурной динамики М. К. Петрова. Профессиология до настоящего времени находится в поиске методологической платформы, которая позволила бы дополнить ее ретроспективные обобщения и междисциплинарную разорванность. Актуализация потенциала концепта совместности позволяет ей консолидировать мультидисциплинарные исследования и их результаты и направить по пути бережного в отношении сделанного и одновременно смелого в сообразовании с заявляющими о себе социальными процессами теоретического конструирования. Авторы наблюдают готовность современного мультидисциплинарного дискурса к объединению на такой методологической платформе, позволяющей не раствориться в ней под воздействием неизбежных для методологии приоритетов и презумпций и в то же время сфокусировать коллективные усилия сообщества исследователей мира занятий и профессий на наиболее перспективных и практико-ориентированных аспектах предмета своего исследования

VALVULAR BRONCHIAL CLOSURE IN THE TREATMENT OF BRONCHOPLEURAL FISTULAS

Aim of the study: the use of the valvular bronchial blocking technique in the treatment of bronchopleural fistulas in patients with thoracic pathology. Material and methods. During the period from 2012 to 2017, the valvular bronchial blocking technique was used in the treatment of 76 patients with bronchopleural fistulae (men 68, women 8). The age of patients is 16 to 82 years. In 24 patients, the indication for bronchial blocking was complications of thoracoscopic operations with bullous pulmonary emphysema. In a smaller number of cases (21), pneumothorax occurred in patients with COPD. Purulent diseases of the lungs and pleura caused a blockage in 24 patients. Results. Medlung blockers were used to treat patients. The blocker was placed in the "targeted" bronchus under local anesthesia while performing fibroblochoscopy. In all cases, the blocker was established. Reduction or cessation of air leakage through drainage from the pleural cavity occurred within a period of 5 hours to 1.5 days. In patients with poorly positive dynamics, correction of the blocker standing and additional blocking were performed, which resulted in good outcomes in 4 patients. A positive result was obtained in more than 85 % of patients. In 10 cases, no effect was obtained, which required surgical intervention. The duration of the blocker in the bronchus was from 4 days to 4 months. When removing the blocker, there were no complications. Conclusion. The technique of valvular bronchial blocking allowed to improve the results of treatment of patients with thoracic profile with various diseases complicated by the appearance of bronchopleural fistula, including complications of the postoperative period

EVALUATION OF THE LEVEL OF QUALITY OF LIFE IN PATIENTS WITH BULLOUS EMPHYSEMA OF THE LUNGS AFTER SURGICAL TREATMENT

The purpose of the study was to assess the level of quality of life in the postoperative period in patients with bullous emphysema of the lungs operated on by «open» access and using minimally invasive technologies using the SF-36 questionnaire. Material and methods. The results of a survey of 50 patients with bullous emphysema were analyzed. The patients were separated into 2 groups depending on the method of access. The first group (main) consisted of the patients underwent video-assisted thoracoscopy, resection of a bulla-modified lung tissue, subtotal parietal pleurectomy. The second group (comparison) consisted of the patients underwent thoracotomy, resection of a bulla-modified lung tissue, subtotal parietal pleurectomy. The survey was conducted using the SF-36 quality of life questionnaire for 1, 3, 6 and 12 months. Results and discussion. The main indicators of the quality of life of respondents in terms of 1, 3 and 6 months after the intervention were statistically significantly higher in the group of patients who underwent thoracoscopy. Only a year after the operation, the main indicators of the questionnaire were not statistically significantly different between groups of patients, but the indicators of vital activity, social functioning, mental health and psychological component of health remained significantly higher in patients of group 1. The results indicate the need for long-term postoperative rehabilitation of patients with bullous emphysema lungs, operated in an «open» way. Follow-up survey with the specific questionnaires is required for more detailed assessment of the level of quality of life in patients with thoracic organs pathology