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- 저자 : Siwei Luo (검색결과 2 건)
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A Scheduling Approach Considering Local Tasks in the Computational Grid
Zhan Gao,Siwei Luo,Ding Ding 보안공학연구지원센터 2007 International Journal of Multimedia and Ubiquitous Vol.2 No.3
Task scheduling under a grid environment is an important research area, on which much attention has been paid. However, either in the meta-task scheduling problems or DAG (Direct Acyclic Graph) scheduling problems, it is usually assumed that tasks are submitted to dedicated hosts and that these tasks are processed in FIFO (First In First Out) order. This is not practical in a grid, in which a host may be shared between grid users and its owner and local tasks, which belong to resource owners, may compete with grid tasks for the hosts. EBGSA (Estimation Based Grid Scheduling Approach) is proposed, which allows for the simultaneous processing of grid tasks and local tasks. In EBGSA we use history information about the execution of tasks to estimate the performance of non-dedicated hosts. Two heuristic scheduling algorithms, MCT (Minimum Completion Time) and Min-min, are selected to perform the simulation experiment. Both experiments obtain a smaller makespan, proving EBGSA feasible for grid task scheduling.
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Peng Jiang,Xiujuan Fu,Hong Niu,Siwei Chen,Feifei Liu,Yu Luo,Dan Zhang,Hui Lei 대한약학회 2023 Archives of Pharmacal Research Vol.46 No.6
Strains of the fungal genus Pestalotiopsis are reported as large promising sources of structurally varied biologically active metabolites. Many bioactive secondary metabolites with diverse structural features have been derived from Pestalotiopsis. Moreover, some of these compounds can potentially be developed into lead compounds. Herein, we have systematically reviewed the chemical constituents and bioactivities of the fungal genus Pestalotiopsis, covering a period ranging from January 2016 to December 2022. As many as 307 compounds, including terpenoids, coumarins, lactones, polyketides, and alkaloids, were isolated during this period. Furthermore, for the benefit of readers, the biosynthesis and potential medicinal value of these new compounds are also discussed in this review. Finally, the perspectives and directions for future research and the potential applications of the new compounds are summarized in various tables.
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