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谈初中数学教学中“错误资源”的合理利用
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作者 黄国云 《活力》 2019年第12期110-110,共1页
在学生知识形成的过程中,难免出现错误。教师应有效地利用学生在课堂上、作业中出现的错误资源。通过分析错误、改正错误,来发展学生的数学思维,提高数学解题能力。
关键词 “错误”资源利用 翻阅错题
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A New Multi-Resource Allocation Mechanism: A Tradeoff between Fairness and Efficiency in Cloud Computing 被引量:2
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作者 Lihua Zhao Minghui Du Lin Chen 《China Communications》 SCIE CSCD 2018年第3期57-77,共21页
This paper addresses multi-resource fair allocation: a fundamental research topic in cloud computing. To improve resource utilization under well-studied fairness constraints, we propose a new allocation mechanism call... This paper addresses multi-resource fair allocation: a fundamental research topic in cloud computing. To improve resource utilization under well-studied fairness constraints, we propose a new allocation mechanism called Dominant Resource with Bottlenecked Fairness(DRBF), which generalizes Bottleneck-aware Allocation(BAA) to the settings of Dominant Resource Fairness(DRF). We classify users into different queues by their dominant resources. The goals are to ensure that users in the same queue receive allocations in proportion to their fair shares while users in different queues receive allocations that maximize resource utilization subject to well-studied fairness properties such as those in DRF. Under DRBF, no user 1) is worse off sharing resources than dividing resources equally among all users; 2) prefers the allocation of another user; 3) can improve their own allocation without reducing other users' allocations; and(4) can benefit by misreporting their resource demands. Experiments demonstrate that the proposed allocation policy performs better in terms of high resource utilization than does DRF. 展开更多
关键词 multi-resource fairness allocation cloud computing resource utilization
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