Belief propagation list(BPL) decoding for polar codes has attracted more attention due to its inherent parallel nature. However, a large gap still exists with CRC-aided SCL(CA-SCL) decoding.In this work, an improved s...Belief propagation list(BPL) decoding for polar codes has attracted more attention due to its inherent parallel nature. However, a large gap still exists with CRC-aided SCL(CA-SCL) decoding.In this work, an improved segmented belief propagation list decoding based on bit flipping(SBPL-BF) is proposed. On the one hand, the proposed algorithm makes use of the cooperative characteristic in BPL decoding such that the codeword is decoded in different BP decoders. Based on this characteristic, the unreliable bits for flipping could be split into multiple subblocks and could be flipped in different decoders simultaneously. On the other hand, a more flexible and effective processing strategy for the priori information of the unfrozen bits that do not need to be flipped is designed to improve the decoding convergence. In addition, this is the first proposal in BPL decoding which jointly optimizes the bit flipping of the information bits and the code bits. In particular, for bit flipping of the code bits, a H-matrix aided bit-flipping algorithm is designed to enhance the accuracy in identifying erroneous code bits. The simulation results show that the proposed algorithm significantly improves the errorcorrection performance of BPL decoding for medium and long codes. It is more than 0.25 d B better than the state-of-the-art BPL decoding at a block error rate(BLER) of 10^(-5), and outperforms CA-SCL decoding in the low signal-to-noise(SNR) region for(1024, 0.5)polar codes.展开更多
On Mar.29th,2024,Bawei Biotechnology was listed at Beijing Stock Exchange.So far,Bawei Biotechnology has smoothly become“the first cosmetics OEM listed at Beijing Stock Exchange”,as well as the first A-share cosmeti...On Mar.29th,2024,Bawei Biotechnology was listed at Beijing Stock Exchange.So far,Bawei Biotechnology has smoothly become“the first cosmetics OEM listed at Beijing Stock Exchange”,as well as the first A-share cosmetics enterprise listed in 2024.At the opening quotation,the stock price increase of Bawei Biotechnology exceeded 200%,and the total market value exceeded 1.4 billion yuan.Bawei Biotechnology mainly engages in the R&D,production,sales and detection of cosmetics,with the product category covering skin care product,facial mask,toiletry,and makeup.So far,it has served a total of 1,000 cosmetics brands,including Unilever,Renhe Ingenuity,HBN,SKINTIFIC,Marubi Biotechnology,PROF.展开更多
Data on discrete,isolated attributes of the marine economy are often used in traditional marine economic research.However,as the focus of urban research shifts from internal static attributes to external dynamic linka...Data on discrete,isolated attributes of the marine economy are often used in traditional marine economic research.However,as the focus of urban research shifts from internal static attributes to external dynamic linkages,the importance of marine economic net-work research is beginning to emerge.The construction of the marine economic network in China’s coastal areas is necessary to change the flow of land and sea resources and optimize regional marine economic development.Employing data from headquarters and branches of sea-related A-share listed enterprises to construct the marine economic network in China,we use social network analysis(SNA)to discuss the characteristics of its evolution as of 2010,2015,and 2020 and its governance.The following results were obtained.1)In terms of topological characteristics,the scale of the marine economic network in China’s coastal areas has accelerated and expan-ded,and the connections have become increasingly close;thus,this development has complex network characteristics.2)In terms of spatial structure,the intensity of the connection fluctuates and does not form stable development support;the group structure gradually becomes clear,but the overall pattern is fragmented;there are spatial differences in marine economic agglomeration radiation;the radi-ation effect of the eastern marine economic circle is obvious;and the polarization effect of northern and southern marine economic circles is significant.On this basis,we construct a framework for the governance of a marine economic network with the market,the government,and industry as the three governing bodies.By clarifying the driving factors and building objectives of marine economic network construction,this study aims to foster the high-quality development of China’s marine economy.展开更多
This paper reports an investigation on Chinese companies＇ perception on overseas public listing. The investigation is mainly based on a questionnaire survey. The result shows that Chinese companies overwhelmingly acc...This paper reports an investigation on Chinese companies＇ perception on overseas public listing. The investigation is mainly based on a questionnaire survey. The result shows that Chinese companies overwhelmingly accept overseas listing as a preferred option, which may shed some light on other Chinese companies in their evaluation on seeking overseas public listing as a strategic option to the overseas exchanges in their efforts of wooing the Chinese market.展开更多
Sea surface electric field observations off the coast from Goa (15°25'N, 73°47'E) to Madras (13°04'N, 80°15'E) around Sri Lanka, in a distance range 25-135 km from coast, during 9-2...Sea surface electric field observations off the coast from Goa (15°25'N, 73°47'E) to Madras (13°04'N, 80°15'E) around Sri Lanka, in a distance range 25-135 km from coast, during 9-20 May 1983 were taken. In this paper we have examined the diurnal variation of electric field in the Arabian Sea, Indian Ocean and Bay of Bengal regions covered during the cruise of the research ship ORV Gaveshani. An aspect of electric field dependence on coastal distance and Aitken Nuclei concentration has also been studied. An attempt to examine the latitude dependence of field was also made. Results obtained in the above studies are presented and compared with those obtained elsewhere.展开更多
Corporate governance represents institutional structures and incentive mechanisms that are implemented in order to mitigate the principal-agent problem and to thus promote the long-term competitiveness of the firm. Th...Corporate governance represents institutional structures and incentive mechanisms that are implemented in order to mitigate the principal-agent problem and to thus promote the long-term competitiveness of the firm. The purpose of this paper is to examine the nature of corporate governance best practice and the new listing rules in Sri Lanka. The paper discusses the evolution of the corporate governance best practice giving special reference to the new listing rules in Sri Lanka, Sri Lankan stock market overview and the importance of best practice governance for the developing economy of Sri Lanka. Corporate governance practices in Sri Lanka has made a progress towards best practice, but, this paper argues, that substantial reforms need to be implemented to effectively promote and sustain the accountability and transparency.展开更多
Based on the time series data and the actual situation of 1995 ~ 2017, this paper makes an empirical analysis of the external factors of the company’s listed psychology in China. The model which affects the psycholog...Based on the time series data and the actual situation of 1995 ~ 2017, this paper makes an empirical analysis of the external factors of the company’s listed psychology in China. The model which affects the psychological change factors of listed enterprises is obtained, and the test and adjustment are carried out, and some suggestions are put forward for the problems existing in the listing environment of our country.展开更多
Belief propagation(BP)decoding outputs soft information and can be naturally used in iterative receivers.BP list(BPL)decoding provides comparable error-correction performance to the successive cancellation list(SCL)de...Belief propagation(BP)decoding outputs soft information and can be naturally used in iterative receivers.BP list(BPL)decoding provides comparable error-correction performance to the successive cancellation list(SCL)decoding.In this paper,we firstly introduce an enhanced code construction scheme for BPL decoding to improve its errorcorrection capability.Then,a GPU-based BPL decoder with adoption of the new code construction is presented.Finally,the proposed BPL decoder is tested on NVIDIA RTX3070 and GTX1060.Experimental results show that the presented BPL decoder with early termination criterion achieves above 1 Gbps throughput on RTX3070 for the code(1024,512)with 32 lists under good channel conditions.展开更多
China Longyuan Power was listed on the main board of Hong Kong Stock Exchange in 2009.The successful listing proved the correctness and timeliness of China Guodian's strategy of "leading enterprises to transf...China Longyuan Power was listed on the main board of Hong Kong Stock Exchange in 2009.The successful listing proved the correctness and timeliness of China Guodian's strategy of "leading enterprises to transformation by exploring new energy resources energetically."展开更多
For polar codes,the performance of successive cancellation list(SCL)decoding is capable of approaching that of maximum likelihood decoding.However,the existing hardware architectures for the SCL decoding suffer from h...For polar codes,the performance of successive cancellation list(SCL)decoding is capable of approaching that of maximum likelihood decoding.However,the existing hardware architectures for the SCL decoding suffer from high hardware complexity due to calculating L decoding paths simultaneously,which are unfriendly to the devices with limited logical resources,such as field programmable gate arrays(FPGAs).In this paper,we propose a list-serial pipelined hardware architecture with low complexity for the SCL decoding,where the serial calculation and the pipelined operation are elegantly combined to strike a balance between the complexity and the latency.Moreover,we employ only one successive cancellation(SC)decoder core without L×L crossbars,and reduce the number of inputs of the metric sorter from 2L to L+2.Finally,the FPGA implementations show that the hardware resource consumption is significantly reduced with negligible decoding performance loss.展开更多
On April 10th,2023,Dencare(stock code:001328),parent company of Lesening,was listed in Shenzhen Stock Exchange.There were 43,043,500 new shares issued this time,with the issue price as 20.68 yuan and raised fund as 89...On April 10th,2023,Dencare(stock code:001328),parent company of Lesening,was listed in Shenzhen Stock Exchange.There were 43,043,500 new shares issued this time,with the issue price as 20.68 yuan and raised fund as 890 million yuan,accounting for 25%of the total capital stock after issuing.It thus became the“first share of anti-sensitivity toothpaste”in A share.Such fundraising will mainly be used to invest in intelligent manufacturing upgrading and construction projects.The opening price on that day was 41 yuan,rising 98.3%comparing with the issue price;the closing price was 56.64 yuan,increasing by 174%comparing with the issue price.It is also one of the first IPOs approved since the full registration system was officially implemented.展开更多
China’s Ministry of Commerce(MOFCOM)on 7 November announced revisions to a list of bulk commodities whose imports and exports should be reported for keeping statistical record.Fourteen commodities including Soybeans,...China’s Ministry of Commerce(MOFCOM)on 7 November announced revisions to a list of bulk commodities whose imports and exports should be reported for keeping statistical record.Fourteen commodities including Soybeans,rapeseed,soybean oil,palm oil and so on will continue to be regulated by current import reporting system.Five new items are included.Crude oil,iron ore.展开更多
基金funded by the Key Project of NSFC-Guangdong Province Joint Program(Grant No.U2001204)the National Natural Science Foundation of China(Grant Nos.61873290 and 61972431)+1 种基金the Science and Technology Program of Guangzhou,China(Grant No.202002030470)the Funding Project of Featured Major of Guangzhou Xinhua University(2021TZ002).
文摘Belief propagation list(BPL) decoding for polar codes has attracted more attention due to its inherent parallel nature. However, a large gap still exists with CRC-aided SCL(CA-SCL) decoding.In this work, an improved segmented belief propagation list decoding based on bit flipping(SBPL-BF) is proposed. On the one hand, the proposed algorithm makes use of the cooperative characteristic in BPL decoding such that the codeword is decoded in different BP decoders. Based on this characteristic, the unreliable bits for flipping could be split into multiple subblocks and could be flipped in different decoders simultaneously. On the other hand, a more flexible and effective processing strategy for the priori information of the unfrozen bits that do not need to be flipped is designed to improve the decoding convergence. In addition, this is the first proposal in BPL decoding which jointly optimizes the bit flipping of the information bits and the code bits. In particular, for bit flipping of the code bits, a H-matrix aided bit-flipping algorithm is designed to enhance the accuracy in identifying erroneous code bits. The simulation results show that the proposed algorithm significantly improves the errorcorrection performance of BPL decoding for medium and long codes. It is more than 0.25 d B better than the state-of-the-art BPL decoding at a block error rate(BLER) of 10^(-5), and outperforms CA-SCL decoding in the low signal-to-noise(SNR) region for(1024, 0.5)polar codes.
文摘On Mar.29th,2024,Bawei Biotechnology was listed at Beijing Stock Exchange.So far,Bawei Biotechnology has smoothly become“the first cosmetics OEM listed at Beijing Stock Exchange”,as well as the first A-share cosmetics enterprise listed in 2024.At the opening quotation,the stock price increase of Bawei Biotechnology exceeded 200%,and the total market value exceeded 1.4 billion yuan.Bawei Biotechnology mainly engages in the R&D,production,sales and detection of cosmetics,with the product category covering skin care product,facial mask,toiletry,and makeup.So far,it has served a total of 1,000 cosmetics brands,including Unilever,Renhe Ingenuity,HBN,SKINTIFIC,Marubi Biotechnology,PROF.
基金Under the auspices of the Key Research Base of Humanities and Social Sciences of the Ministry of Education of China(No.22JJD790029)。
文摘Data on discrete,isolated attributes of the marine economy are often used in traditional marine economic research.However,as the focus of urban research shifts from internal static attributes to external dynamic linkages,the importance of marine economic net-work research is beginning to emerge.The construction of the marine economic network in China’s coastal areas is necessary to change the flow of land and sea resources and optimize regional marine economic development.Employing data from headquarters and branches of sea-related A-share listed enterprises to construct the marine economic network in China,we use social network analysis(SNA)to discuss the characteristics of its evolution as of 2010,2015,and 2020 and its governance.The following results were obtained.1)In terms of topological characteristics,the scale of the marine economic network in China’s coastal areas has accelerated and expan-ded,and the connections have become increasingly close;thus,this development has complex network characteristics.2)In terms of spatial structure,the intensity of the connection fluctuates and does not form stable development support;the group structure gradually becomes clear,but the overall pattern is fragmented;there are spatial differences in marine economic agglomeration radiation;the radi-ation effect of the eastern marine economic circle is obvious;and the polarization effect of northern and southern marine economic circles is significant.On this basis,we construct a framework for the governance of a marine economic network with the market,the government,and industry as the three governing bodies.By clarifying the driving factors and building objectives of marine economic network construction,this study aims to foster the high-quality development of China’s marine economy.
文摘This paper reports an investigation on Chinese companies＇ perception on overseas public listing. The investigation is mainly based on a questionnaire survey. The result shows that Chinese companies overwhelmingly accept overseas listing as a preferred option, which may shed some light on other Chinese companies in their evaluation on seeking overseas public listing as a strategic option to the overseas exchanges in their efforts of wooing the Chinese market.
文摘Sea surface electric field observations off the coast from Goa (15°25'N, 73°47'E) to Madras (13°04'N, 80°15'E) around Sri Lanka, in a distance range 25-135 km from coast, during 9-20 May 1983 were taken. In this paper we have examined the diurnal variation of electric field in the Arabian Sea, Indian Ocean and Bay of Bengal regions covered during the cruise of the research ship ORV Gaveshani. An aspect of electric field dependence on coastal distance and Aitken Nuclei concentration has also been studied. An attempt to examine the latitude dependence of field was also made. Results obtained in the above studies are presented and compared with those obtained elsewhere.
文摘Corporate governance represents institutional structures and incentive mechanisms that are implemented in order to mitigate the principal-agent problem and to thus promote the long-term competitiveness of the firm. The purpose of this paper is to examine the nature of corporate governance best practice and the new listing rules in Sri Lanka. The paper discusses the evolution of the corporate governance best practice giving special reference to the new listing rules in Sri Lanka, Sri Lankan stock market overview and the importance of best practice governance for the developing economy of Sri Lanka. Corporate governance practices in Sri Lanka has made a progress towards best practice, but, this paper argues, that substantial reforms need to be implemented to effectively promote and sustain the accountability and transparency.
文摘Based on the time series data and the actual situation of 1995 ~ 2017, this paper makes an empirical analysis of the external factors of the company’s listed psychology in China. The model which affects the psychological change factors of listed enterprises is obtained, and the test and adjustment are carried out, and some suggestions are put forward for the problems existing in the listing environment of our country.
基金supported by the Fundamental Research Funds for the Central Universities (FRF-TP20-062A1)Guangdong Basic and Applied Basic Research Foundation (2021A1515110070)
文摘Belief propagation(BP)decoding outputs soft information and can be naturally used in iterative receivers.BP list(BPL)decoding provides comparable error-correction performance to the successive cancellation list(SCL)decoding.In this paper,we firstly introduce an enhanced code construction scheme for BPL decoding to improve its errorcorrection capability.Then,a GPU-based BPL decoder with adoption of the new code construction is presented.Finally,the proposed BPL decoder is tested on NVIDIA RTX3070 and GTX1060.Experimental results show that the presented BPL decoder with early termination criterion achieves above 1 Gbps throughput on RTX3070 for the code(1024,512)with 32 lists under good channel conditions.
文摘China Longyuan Power was listed on the main board of Hong Kong Stock Exchange in 2009.The successful listing proved the correctness and timeliness of China Guodian's strategy of "leading enterprises to transformation by exploring new energy resources energetically."
基金supported in part by the National Key R&D Program of China(No.2019YFB1803400)。
文摘For polar codes,the performance of successive cancellation list(SCL)decoding is capable of approaching that of maximum likelihood decoding.However,the existing hardware architectures for the SCL decoding suffer from high hardware complexity due to calculating L decoding paths simultaneously,which are unfriendly to the devices with limited logical resources,such as field programmable gate arrays(FPGAs).In this paper,we propose a list-serial pipelined hardware architecture with low complexity for the SCL decoding,where the serial calculation and the pipelined operation are elegantly combined to strike a balance between the complexity and the latency.Moreover,we employ only one successive cancellation(SC)decoder core without L×L crossbars,and reduce the number of inputs of the metric sorter from 2L to L+2.Finally,the FPGA implementations show that the hardware resource consumption is significantly reduced with negligible decoding performance loss.
文摘On April 10th,2023,Dencare(stock code:001328),parent company of Lesening,was listed in Shenzhen Stock Exchange.There were 43,043,500 new shares issued this time,with the issue price as 20.68 yuan and raised fund as 890 million yuan,accounting for 25%of the total capital stock after issuing.It thus became the“first share of anti-sensitivity toothpaste”in A share.Such fundraising will mainly be used to invest in intelligent manufacturing upgrading and construction projects.The opening price on that day was 41 yuan,rising 98.3%comparing with the issue price;the closing price was 56.64 yuan,increasing by 174%comparing with the issue price.It is also one of the first IPOs approved since the full registration system was officially implemented.
文摘China’s Ministry of Commerce(MOFCOM)on 7 November announced revisions to a list of bulk commodities whose imports and exports should be reported for keeping statistical record.Fourteen commodities including Soybeans,rapeseed,soybean oil,palm oil and so on will continue to be regulated by current import reporting system.Five new items are included.Crude oil,iron ore.
