timizing the formula, the energy for every bit of the codeword is optimized to achieve the minimum BER at high SNR region. At last, an adjustable parameter is employed to compensate the degrada- tions of BER at low an...timizing the formula, the energy for every bit of the codeword is optimized to achieve the minimum BER at high SNR region. At last, an adjustable parameter is employed to compensate the degrada- tions of BER at low and moderate SNR regions. Case studies indicate that the improvements of BER for turbo codes with short frame size are significant at a wide range of SNR展开更多
Innovative ability is an important indicator for judging the effectiveness of the national agricultural science and technology park construction. Based on the statistical data of four national agricultural science and...Innovative ability is an important indicator for judging the effectiveness of the national agricultural science and technology park construction. Based on the statistical data of four national agricultural science and technology parks built in Jiangxi Province, this paper constructs an evaluation system consisting of three first-level indicators, eight second-level indicators and 24 three-level indicators. Based on the combined weighting method, the comprehensive scores of the innovation capabilities of the parks are obtained. It is found that the gap in innovation capability of each park is wide, and the radiation-driven function has not yet appeared. It is necessary to promote the improvement of innovation capabilities by promoting the synergy and innovation of agricultural science and technology in the park, encouraging the park to construct agricultural technology business incubators, and building and improving innovation platforms.展开更多
It is extremely time-consuming to restart a long-running simulation from the beginning when a failure occurs.Checkpointing is a viable solution that enables simulations to be resumed from the point of failure.We study...It is extremely time-consuming to restart a long-running simulation from the beginning when a failure occurs.Checkpointing is a viable solution that enables simulations to be resumed from the point of failure.We study three models to determine the optimal checkpoint interval between contiguous checkpoints so that the total execution time is minimized and we demonstrate that optimal checkpointing can facilitate self-optimizing.This study greatly advances our knowledge of and practice in optimizing long-running scientific simulations.展开更多
基金Supported by the National High Technology Research and Development Programme of China(No.2014AA01A705)the National Natural Science Foundation of China(U1204607)
文摘timizing the formula, the energy for every bit of the codeword is optimized to achieve the minimum BER at high SNR region. At last, an adjustable parameter is employed to compensate the degrada- tions of BER at low and moderate SNR regions. Case studies indicate that the improvements of BER for turbo codes with short frame size are significant at a wide range of SNR
文摘Innovative ability is an important indicator for judging the effectiveness of the national agricultural science and technology park construction. Based on the statistical data of four national agricultural science and technology parks built in Jiangxi Province, this paper constructs an evaluation system consisting of three first-level indicators, eight second-level indicators and 24 three-level indicators. Based on the combined weighting method, the comprehensive scores of the innovation capabilities of the parks are obtained. It is found that the gap in innovation capability of each park is wide, and the radiation-driven function has not yet appeared. It is necessary to promote the improvement of innovation capabilities by promoting the synergy and innovation of agricultural science and technology in the park, encouraging the park to construct agricultural technology business incubators, and building and improving innovation platforms.
基金Project supported by the National Science Foundation of USAthe Information Technology Research (ITR/AP-DEB) (No. 0112820)
文摘It is extremely time-consuming to restart a long-running simulation from the beginning when a failure occurs.Checkpointing is a viable solution that enables simulations to be resumed from the point of failure.We study three models to determine the optimal checkpoint interval between contiguous checkpoints so that the total execution time is minimized and we demonstrate that optimal checkpointing can facilitate self-optimizing.This study greatly advances our knowledge of and practice in optimizing long-running scientific simulations.
