Results 31 to 40 of about 1,908,555 (207)
IEEE Photonics Journal, 2017 In this paper, the performance of polar code in high-speed coherent optical orthogonal frequency division multiplexing (CO-OFDM) system with nonlinear and linear impairments is comprehensively investigated for the first time.
Ling Liu +5 more
doaj +1 more source
Polar bear predation on ringed seals in the fast-ice of Hornsund, Svalbard [PDF]
, 1986 Polar bear hunting success on ringed seals in subnivean lairs and basking on the fast ice, was studied in Hornsund, Svalbard. A few bears were observed while actually hunting, but in most cases bear tracks were followed by snowmobile to determine the ...
Gjertz, Ian, Lydersen, Christian
core +1 more source
Simplified polar code decoding algorithm
Dianzi Jishu Yingyong, 2018 Polar code is an error correction coding technique, which can prove from the mathematical point of view to reach Shannon′s limit. However, the traditional decoding algorithm, such as the successive cancellation(SC) and the successive cancellation list ...
Wang Dan +3 more
doaj +1 more source
Reading and thinking about International Polar Years: five recent books [PDF]
, 2013 Within the polar science community the Polar (and Geophysical) Years represent signal events. We often read, largely within geoscience literature, that those events represented positive and dramatic steps forward in international science.
Dave Carlson, Carlson, Dave
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Aerial strip surveys of polar bears in the Barents Sea [PDF]
, 1990 Aerial strip surveys of polar bears in the Barents Sea were performed by helicopter in winter 1987. The number of bears within 100 m on each side of the helicopter was counted. A total of 263.6 km2 was surveyed and 21 bears were counted.
Wiig, Øystein, Bakken, Vidar
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In memory of Torgny Vinje—a genuine polar scientist [PDF]
, 2016 No abstract available.(Published: 31 May 2016)Citation: Polar Research 2016, 35, 32211,http://dx.doi.org/10.3402/polar.v35 ...
Gerland, Sebastian +5 more
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Liver organoids: modelling complexity in homeostasis and disease
FEBS Letters, EarlyView.Studying liver in vitro has been challenging because simple 2D cell cultures fail to capture liver's cellular and architectural complexity. To bridge this gap, scientists increasingly use organoids, 3D liver models which better mimic liver composition and function. This review examines recent advances in liver organoid complexity and realism, discusses
Anna M. Dowbaj, Meritxell Huch
wiley +1 more source
Novel polar-coded space-time transmit diversity scheme over Rician fading MIMO channels
EURASIP Journal on Wireless Communications and Networking, 2018 In this paper, a polar-coded space-time transmit diversity (STTD) scheme is proposed in order to improve the performance of multiple-input multiple-output (MIMO) system.
Bowen Feng +4 more
doaj +1 more source
, 2010 The polar regions have captured the world’s attention, and children’s book authors and publishers are no exception. These dozen titles are just a sample of the bucketload of polar-themed children’s books that have been published during the last couple of
Goldman, Helle
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International code for ships operating in polar waters: challenges to polar shipping safety rules in China [PDF]
, 2016 With the sea-ice diminishing steadily in the polar regions, there has been growing interest in new transit routes through polar waters using cost-effective transportation. Among the international regulators over polar shipping, the International Maritime
Yan, Huang, Weifang, Li
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