We demonstrate single transverse-mode operation of InAs quantum dot (QD) broad-area coupled waveguide lasers enabled by parity-time (PT) symmetric breaking. A novel electrically pumped PT laser operates on waveguide cavity with parallel gain and loss regions. Such counterintuitive waveguide design enables PT symmetric breaking, causing unique mode selection and ultimately enabling single mode operation. By tuning the loss in the loss region of the coupled waveguide cavity, several different PT-symmetric regimes are analyzed theoretically, and the corresponding PT symmetric phase transition is demonstrated experimentally in the coupled waveguide laser.
The article views approaches of the Russian and foreign scientists to development and realization of competitive strategy of enterprises. Necessity and importance of development of competitive strategy, oriented at formation of competitive advantages, methods, and means of competitive struggle, predetermined by increased competition and growth of consumers' requirements to product quality. This process plays a very important role in machine building. Machine building is one of the strategically important spheres which ensure development and security of the country. At the same time, Russian machine building lags behind most of developed countries as to the level of development. Main reasons for such lagging behind are: inaccessibility of credit means, low investment and innovational provision, low qualification of management, and old production and technical base. In order to overcome the existing gap, it is necessary to develop long-term competitive strategy of development of machine building enterprises which ensures conquering certain markets of specific products. Based on the analysis of definitions of scientists and specialists in the sphere of strategic management, the notion "competitive strategy of enterprise" is specified. Methodology of formation and realization of enterprise's strategy are viewed in detail. Specific examples of missions, strategic vision, and strategic goals of leading enterprises of machine building are given. Significance of development of competitive strategy for effective functioning and development of enterprise is shown. Features which distinguish the process of development and realization of competitive strategy from models of strategic planning that exist in scientific literature are determined. It is proved that development of competitive strategy requires paying special attention to analysis of competitive potential of enterprise and level of its competitive activityfor the purpose of creation of effective strategy which would fully express specifics of activities and individuality of enterprise.
Modern Slavic languages and academic Slavic Studies: processes, tendencies, communication and derivation (review)The article is a review of the volume Specyfika leksyki i słowotwórstwa języków słowiańskich na przełomie XX i XXI wieku (“Prace Slawistyczne – Slavica” series, vol. 136), ed. Zofia Rudnik-Karwatowa, Slawistyczny Ośrodek Wydawniczy, Warszawa 2012, 188 pp. Współczesne języki słowiańskie a akademicka slawistyka: procesy, tendencje, komunikacja i derywacja (recenzja)Artykuł stanowi recenzję pracy Specyfika leksyki i słowotwórstwa języków słowiańskich na przełomie XX i XXI wieku („Prace Slawistyczne – Slavica”, 136), red. Zofia Rudnik-Karwatowa, Slawistyczny Ośrodek Wydawniczy, Warszawa 2012, 188 ss.
Ethymology of the place name Вердеревъ The oiconym Вердеревъ is mentioned in a document from the end of the 14th century. The historical place name is connected with today's name of a village in Skopin region, Riazan district. Some scientists observe a connection between the name with a hydronym Вердa (V.P. Neroznak, M.H. Tyhomyrov, M.A. Yuyukin). This explanation was called into question by the author: he proves that the oiconym Вердерев needs to be connected with a toponym Верх Дерево and adduces numerous similar geographic names in Slavic lands. Ещё раз об этимoлогии ойконима ВердеревъНазвание Вердеревъ упоминается в списке наименований городов российских от XIV в. Историческое летописное название связано с названием поселения, находящегося в Скопинском районе Рязанской области. По мнению некоторых учёных (Нерознак, Tихoмиpoв, Ююкин) данное название надо связывать с гидронимом Верда. Автор статьи предлагает другое толкование, считая, что ойконим Вердеревъ следует рассматривать в связи с топонимом Верх Дерево. На подтвержление своего мнения автор приводит ряд подобных географических названий, зафиксированных на всей славянской территории.
The article analyzes dynamics of the volume and annual rate of loan delinquency of the country's population for intermediate quarter dates, compares default retail credit portfolios with similar portfolio of organizations, and determines the main reasons for appearance of population's debts before banks. It is concluded that it is necessary for banks to focus on development of their own tools and technologies of payment recovery, related to determination of early problematic debt for the purpose of taking preventive measures for preventing the appearance of past-due debts, which is possible under the condition of investing money assets into own analytical and technological tools. An approach to segmentation of debts and factors that could be used as indicators in the process of accompanying and servicing of credits are offered.
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