منابع مشابه
Special Articles on 5 G Technologies toward 2020 Deployment
NTT DOCOMO is researching and developing the fifth-generation mobile communications system (5G) toward the provision of super-high-speed, super-high-capacity wireless communications services. In 5G, the aim is to widen the bandwidth of transmission signals by using frequency bands higher than those of existing frequency bands. However, as radio propagation loss increases in high frequency bands...
متن کاملSpecial Essay Systematics Agenda 2020: The Mission Evolves
© The Author(s) 2012. Published by Oxford University Press on behalf of Society of Systematic Biologists. This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is pr...
متن کاملSpecial Needs at Different Educational Levels: A Forecast of 2020
This paper reports on the results of the eAccessibility 2020 study which was funded by the European Commission to explore and analyse the relationships between the emerging Information and Communications Technologies (ICT) landscape in the societal and economic context, and the development and provision of assistive technologies and eAccessibility within a perspective of the next 10 years. The ...
متن کاملSpecial Articles on 5 G Technologies toward 2020 Deployment
NTT DOCOMO is currently studying a fifth-generation mobile communications system (5G) intensely. This system is expected to use high frequency bands, so clarification of the propagation characteristics in these high frequency bands is the most important issue in radio propagation research for 5G. This article gives an overview of the issues and current state of study in radio propagation, and d...
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Sixtynine cases of portal systemic encephalopathy (PSE) (45 cirrhosis, 24 hepatitis) were seen during 15 months. Coma due to acute viral hepatitis occurred in a younger age group as compared to cirrhosis. Upper gastrointestinal bleeding and hepatic necrosis were the main precipitating factors. Most of the patients were in grade Ill (37.6%) and IV (34.7%) coma when first seen. Blood ammonia nitr...
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ژورنال
عنوان ژورنال: Vakuum in Forschung und Praxis
سال: 2020
ISSN: 0947-076X,1522-2454
DOI: 10.1002/vipr.202070401