Results 21 to 30 of about 1,908,555 (207)
Polar bears killed in Svalbard 1987–1992 [PDF]
, 1993 A total of 26 polar bears have been killed in Svalbard since January 1987. Fifteen of these cases were self defense, four precautionary measures, six acts of mercy and one unknown.
Gjertz, Ian +2 more
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Guest editorial—the ballyhoo over polar bears [PDF]
, 2009 Critics have said that there’s little or no justification for the focus that polar bears (Ursus maritimus) have received as a threatened species. Recent studies project dramatic reductions in polar bear numbers in just a few decades, in concert with the ...
Vongraven, Dag
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Polar Codes With Repeating Bits and the Construction by Cluster Pairwise Error Probability
IEEE Access, 2019 A polar code with repeating bits (RB polar code), where a part of frozen bits only repeat their preceding information bits, is proposed. In the code construction, we propose cluster pairwise error probability (CPEP) to measure the competitiveness of the ...
Tao Wang, Daiming Qu, Tao Jiang
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Multi-CRC Polar Codes and M-SCFlip-Based Decoding
IEEE Access, 2019 A multi-cyclic redundancy check (Multi-CRC) polar code construction algorithm is proposed in this paper to solve the error propagation problem of successive cancellation decoding for polar codes.
Rui Guo, Kangni Chen, Huaping Liu
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Low Power, Area Efficient Architecture for Successive Cancellation Decoder
Emitter: International Journal of Engineering Technology, 2022 Polar codes have recently emerged as an error-correcting code and have become popular owing to their capacity-achieving nature. Polar code based communication system primarily consists of two parts, including Polar Encoder and Decoder.
Sujanth Roy J, G Lakshminarayanan
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Review of Climate change in the polar regions, by John Turner & Gareth J. Marshall [PDF]
, 2012 In this ambitious, cross-disciplinary volume, British Antarctic Survey scientists John Turner and Gareth Marshall synthesize what is known about climate change in the Arctic and Antarctic and compare the changes that have occurred in the two polar ...
Orheim, Olav
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IEEE Access, 2021 We propose generalized partially information coupled (PIC) polar codes and their construction method. In the proposed codes, each code block (CB) shares systematic information bits partially with J adjacent CBs on each side, where J is referred to as the
Hyoungbae Ahn +2 more
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Evaluation of the Polar Code in different environments and for different maritime activities in the two polar regions [PDF]
, 2020 Because of the decrease in sea ice coverage, maritime activities in the polar regions have increased steadily over the years and several issues related to maritime activities have arisen.
Ozsoy, Burcu, Karahalil, Meric
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A method for shorting of the system Polar code based on bit-reverse permutation
Dianxin kexue, 2019 Polar code,as a channel coding scheme in 3GPP standard,has good error correction performance.In order to further improve performance of the BER of the punctured Polar code,the shortening algorithm based on bit-reverse permuation was applied to the system
Shunlan LIU, Haibo BIAN, Aiming HU
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Design of concatenated Hash-Polar code based on segmented CRC code
Dianxin kexue, 2022 As a linear block code, the polarization code has a lower coding complexity and a definite structure, but when it has a short or medium code length, the performance will be reduced.A design method of concatenated HashPolar codes based on segmented cyclic
Zhengjie LI, Shunlan LIU, Xu ZHANG
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