A scheduling scheme is proposed to reduce execution time by means of both checkpoint sharing and task duplication under a peer-to-peer(P2P) architecture. In the scheme, the checkpoint executed by each peer(i.e., a res...A scheduling scheme is proposed to reduce execution time by means of both checkpoint sharing and task duplication under a peer-to-peer(P2P) architecture. In the scheme, the checkpoint executed by each peer(i.e., a resource) is used as an intermediate result and executed in other peers via its duplication and transmission. As the checkpoint is close to a final result, the reduction of execution time for each task becomes higher, leading to reducing turnaround time. To evaluate the performance of our scheduling scheme in terms of transmission cost and execution time, an analytical model with an embedded Markov chain is presented. We also conduct simulations with a failure rate of tasks and compare the performance of our scheduling scheme with that of the existing scheme based on client-server architecture. Performance results show that our scheduling scheme is superior to the existing scheme with respect to the reduction of execution time and turnaround time.展开更多
A novel high performance carrier stored trench bipolar transistor （CSTBT） with a field- modified P-base region is proposed. Due to the p-pillars inserted into the drift region extending the P-base region to the bott...A novel high performance carrier stored trench bipolar transistor （CSTBT） with a field- modified P-base region is proposed. Due to the p-pillars inserted into the drift region extending the P-base region to the bottom of the trench gate, the electric field around the trench gate is modified, preventing the CSTBT from breakdown in advance caused by a concentration of the electric field at the edge of the trench gate. The p-pillars under the p-well forming the novel P-base region also provide extra paths for hole transportation. Thus, the switching time is also reduced. Simulation results have shown that the blocking voltage （BV） of the novel CSTBT is almost 430 V higher exhibiting avalanche breakdown properties compared with the conventional CSTBT. Moreover, the turn-off time of the novel structure is 0.3μs （17%） shorter than the conventional CSTBT with the same gate length.展开更多
InP-based photonics integration is becoming a competi- tive candidate for realizing optical modules with enhanced functionality at a reduced cost, especially in optical com- munication systems, since the proposal of w...InP-based photonics integration is becoming a competi- tive candidate for realizing optical modules with enhanced functionality at a reduced cost, especially in optical com- munication systems, since the proposal of wavelength division multiplexing （WDM）. In recent years, network traffic has raised demands for high capacity, high speed transmission systems.展开更多
In this paper, we discuss some trellis properties for codes over a finite Abelian group, which are the generalization of the corresponding trellis properties for linear codes over a field. Also, we also investigate di...In this paper, we discuss some trellis properties for codes over a finite Abelian group, which are the generalization of the corresponding trellis properties for linear codes over a field. Also, we also investigate difficulties when we try to generalize a property of a tail-biting trellis for a linear code over a field to a group code.展开更多
基金supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (2012R1A1A4A0105777)supported by the MSIP (Ministry of Science, ICT and Future Planning), Korea, under the ITRC (Information Technology Research Center) support program (NIPA-2013-H030113-4007) supervised by the NIPA (National IT Industry Promotion Agency)
文摘A scheduling scheme is proposed to reduce execution time by means of both checkpoint sharing and task duplication under a peer-to-peer(P2P) architecture. In the scheme, the checkpoint executed by each peer(i.e., a resource) is used as an intermediate result and executed in other peers via its duplication and transmission. As the checkpoint is close to a final result, the reduction of execution time for each task becomes higher, leading to reducing turnaround time. To evaluate the performance of our scheduling scheme in terms of transmission cost and execution time, an analytical model with an embedded Markov chain is presented. We also conduct simulations with a failure rate of tasks and compare the performance of our scheduling scheme with that of the existing scheme based on client-server architecture. Performance results show that our scheduling scheme is superior to the existing scheme with respect to the reduction of execution time and turnaround time.
基金Project supported by the State Key Project of Science and Technology,China(No.2011ZX02706-003)
文摘A novel high performance carrier stored trench bipolar transistor （CSTBT） with a field- modified P-base region is proposed. Due to the p-pillars inserted into the drift region extending the P-base region to the bottom of the trench gate, the electric field around the trench gate is modified, preventing the CSTBT from breakdown in advance caused by a concentration of the electric field at the edge of the trench gate. The p-pillars under the p-well forming the novel P-base region also provide extra paths for hole transportation. Thus, the switching time is also reduced. Simulation results have shown that the blocking voltage （BV） of the novel CSTBT is almost 430 V higher exhibiting avalanche breakdown properties compared with the conventional CSTBT. Moreover, the turn-off time of the novel structure is 0.3μs （17%） shorter than the conventional CSTBT with the same gate length.
基金supported by the National High-Tech Research and Development Program of China(No.2015AA016902)the National Natural Science Foundation of China(Nos.61635010,61674136,and 61435002)
文摘InP-based photonics integration is becoming a competi- tive candidate for realizing optical modules with enhanced functionality at a reduced cost, especially in optical com- munication systems, since the proposal of wavelength division multiplexing （WDM）. In recent years, network traffic has raised demands for high capacity, high speed transmission systems.
基金Supported by the National Natural Science Foundation of China (No. 60772131)Shanghai Pujian Talent Program (No. 06PJ14009)Fox Ying Yung Education Foundation (No. 114401) and NCET'08.
文摘In this paper, we discuss some trellis properties for codes over a finite Abelian group, which are the generalization of the corresponding trellis properties for linear codes over a field. Also, we also investigate difficulties when we try to generalize a property of a tail-biting trellis for a linear code over a field to a group code.
