Design Principles of 5G NR RoF-Based Fiber-Wireless Access Network

For today, much attention in the upcoming 5G New Radio (NR) mobile networks is paid to radically expanding the available spectral bands up to millimeter wavelengths (MMW). Following this tendency, currently, the local telecommunication commissions of various countries are proposing and harmonizing the plans of frequency allocation in MMW band, which will be reviewed this year at the World Radio Conference (WRC-2019). Another milestone of great importance is the development of access networks. Here, well-known radio-over-fiber (RoF) technology is considered as the most promising approach, which is implemented based on fiber-wireless (FiWi) architecture. Elaborating the direction, in this chapter we review the worldwide progress of RoF-architected 5G NR access networks and highlight our last simulation results on design and optimization of millimeter-photonic-based FiWi interface. All schemes are modeled using VPIphotonics Design Suite software tool. In the result of simulation experiments, optimal design principles of optical distribution network (ODN), fiber-wireless interface (FWI), and fiber-wireless fronthaul network (FWFN) as a whole have been proposed, described, and validated

Yoshiwara’s Courtesans Yuujo in Yuujo-Hyoubanki “Keisei Tsurezuregusa” (18th Century)

This report based on a written source of the 18th century “Keisei Tsurezuregusa” which belongs to the genre of hyoubanki describes courtesans yuujo in Yoshiwara, the only licensed pleasure quarter in Edo.В настоящем докладе на основе анализа письменного источника XVIII в. «Кэйсэй цурэдзурэгуса», относящегося к жанру хёбанки, описываются юдзё («девы веселья») в единственном легальном веселом квартале Эдо — Ёсивара

Деятельность Всероссийской патентно-технической библиотеки в условиях открытого доступа к патентной информации

The author examines specific characteristics of patent information use in patent research and the major vectors of All-Russian Patent and Technical Library work. The author points to changes in collection development technology, user services in remote access mode, designing information products intended to orient users in multiple information resources on the Internet. She emphasizes that the Library’s patent law collection is relevant, very important and the most complete specialized collection on intellectual property issues.Представлены особенности использования патентной информации при проведении патентных исследований и основные направления деятельности Всероссийской патентно-технической библиотеки в современных условиях. Освещены изменение технологии формирования Государственного патентного фонда, обслуживание пользователей в режиме удалённого доступа, подготовка информационных продуктов, которые помогают ориентироваться в многообразии информационных ресурсов, размещённых в интернете. Отмечено, что фонд патентно-правовой литературы ВПТБ не теряет своей значимости и актуальности, так как представляет собой наиболее полное собрание специальной литературы по вопросам охраны интеллектуальной собственности

Modeling and Simulation in Microwave-Photonics Applications

In this chapter, with the goal to recover an optimal mean for computer-aided modeling and simulating a newer class of microwave-photonics-based radio electronic apparatuses, a number of comparative simulation experiments for the basic microwave band electronic devices and systems using well-known software tools referred to photonic design automation or upgraded electronic design automation platforms are carried out. As a result, it is shown that exploiting the software of upgraded electronic design automation platform provides significantly better accuracy of calculations for the devices and systems of this class

Design of Reconfigurable Multiple-Beam Array Feed Network Based on Millimeter-Wave Photonics Beamformers

In this chapter, elaborating the direction of designing photonics-based beamforming networks (BFN) for millimeter-wave (mmWave) antenna arrays, we review the worldwide progress referred to designing multiple-beam photonics BFN and highlight our last simulation results on design and optimization of millimeter-photonics-based matrix beamformers. In particular, we review the specialties of mmWave photonics technique in 5G mobile networks of Radio-over-Fiber (RoF) technology based on fiber-wireless architecture. In addition, the theoretical background of array antenna multiple-beam steering using ideal models of matrix-based phase shifters and time delay lines is presented including a general analysis of radiation pattern sensitivity to compare updated photonics beamforming networks produced on phase shifter or true-time delay approach. The principles and ways to optimized photonics BFN design are discussed based on the study of photonics BFN scheme including integrated 8×8 optical Butler matrix (OBM). All schemes are modeled using VPIphotonics Design Suite and MATLAB software tools. In the result of simulation experiments, the outcome is obtained that both the integrated optical Butler matrix itself and the BFN based on it possess an acceptable quality of beams formation in a particular 5G pico-cell

The Daily Life of the Yu:jo in the Yoshiwara Quarter in the Edo Period

The article was submitted on 18.05.2022.В статье рассматриваются особенности повседневной жизни «дев веселья» ю:дзё веселого квартала Ёсивара в период Эдо (1603–1868), характеризуется анитарно-эпидемическая ситуация и методы лечения заболеваний, распространенных в квартале Ёсивара, гигиенические обычаи, вопросы деторождения и воспитания детей, рожденных ю:дзё, рацион питания, способы поддержания дисциплины.The paper considers the daily life of the “women for pleasure” yu:jo in the Yoshiwara Quarter in the Edo period (1603–1868), characterizes the sanitary and epidemic situation and methods of treating diseases common in the Yoshiwara Quarter, hygiene customs, issues of childbearing and raising children born by yu:jo, their basic diet, ways to maintain discipline

Tick-Borne Encephalitis with Hemorrhagic Syndrome, Novosibirsk Region, Russia, 1999

Eight fatal cases of tick-borne encephalitis with unusual hemorrhagic syndrome were identified in 1999 in the Novosibirsk Region, Russia. To study these strains, we sequenced cDNA fragments of protein E gene from six archival formalin-fixed brain samples. Phylogenetic analysis showed tick-borne encephalitis variants clustered with a Far Eastern subtype (homology 94.7%) but not with the Siberian subtype (82%)