教学课程资源库 更多>>

关键词： computer   Computer   discipline  

摘要： To explore the nature of computer science and promote the development of the computer science discipline,Tsinghua University organized a global forum during the 60th anniversary of the Department of Computer Science and Technology at *** forum aimed to bring together leaders of the top computer science departments in the world to discuss the fundamentals of computer science,improve the quality of talent cultivation,and promote the development of the global computer science discipline.

关键词： Logic gates   Bandwidth   Service level agreements   Packet loss   Computer science   Cloud computing   Wide area networks   Network function virtualization   network load detection   flow bandwidth prediction   stateful scaling   service level agreements  

摘要： Network function virtualization (NFV) enables elastic scaling to middlebox deployment and management. Therefore, efficient stateful scaling is an important task because operators often need to shift traffic and the associated flow states across VNF instances to deal with time-varying loads. Existing NFV scaling methods, however, typically focus on one aspect of the scaling pipeline and does not offer an end-to-end scaling framework. This article presents ScaleFlux, a complete stateful scaling system that efficiently reduces flow-level latency and achieves near-optimal resource usage. ScaleFlux (1) monitors traffic load for each VNF instance and adopts a queue-based mechanism to detect load burstiness timely, (2) deploys a flow bandwidth predictor to predict flow bandwidth time-series with the ABCNN-LSTM model, and (3) schedules the necessary flow and state migration using the simulated annealing algorithm to achieve both flow-level latency guarantee and resource usage minimization. Testbed evaluation with a five-machine cluster shows that ScaleFlux reduces flow completion time by at least 8.7x for all the workloads and achieves near-optimal CPU usage during scaling.

关键词： 地方性高校   研究生培养   培养模式  

摘要： 当前我国经济与科技的快速增长,加大了对应用型人才的需求,同时,也对高等院校的研究生培养提出了更高要求。以计算机科学与技术专业为例,系统分析了地方性高校中研究生的培养现状及存在问题,提出了提高生源质量、提高教师水平和加强研究生培养的三种针对性措施,并结合实际案例在加强研究生培养的针对性方面进行探索,以地方性为出发点、以学生为主体、以人工智能课程体系为框架、以校地—校企—校校合作为实施途径、以应用型人才为目标,从培养模式、课程体系、课堂教学、实施途径方面进行系统分析,探索和研究地方性院校研究生培养的“四位一体”新模式。

关键词： 地域文化   艺术色彩   民间艺术   郝青青“喜盒子   黑色”色彩  

摘要： 地域文化中的地理环境和人文环境是艺术色彩形成的基础,艺术色彩受地理环境因素的影响和制约,也受人文环境的感染和驱使。同时地域文化的环境特征与人的审美心理有着不可分割的联系,艺术审美心理在特定地域因素影响下形成特定的艺术色彩风格。民间艺术是人文精神、人文观念和人文情感之下的产物,人文环境的构成因素与所处的自然地理环境有着多层次、多方面的关系。这赋予了民间艺术具有很直观的地域代表性和象征性,及民俗文化性和社会特征性。本文主要以研究艺术色彩与地域文化关系为主,分析了地域文化的影响及艺术色彩的形成因素,论述了地域文化在艺术色彩中的表现。采用资料收集法和实地考察法相结合研究出郝青青喜盒子中“黑色”色彩的应用原因,分析郝青青喜盒子中独特的“黑色”色彩与“地域文化”之间的关系。深入挖掘红岛地域文化,从而分析出郝青青喜盒子如何受地域文化的影响形成独特审美观念。

关键词： Computer Science   College Education   University Social Responsibility  

摘要： Broad multidisciplinary computing is transforming our modern life in many aspects,and computer science itself is also *** response to these trends,the Massachusetts Institute of Technology(MIT)recently built a new college,the Schwarzman College of *** missions of the College are to support rapid growth of computing fields,facilitate computing collaborations across departments and disciplines,and to focus on social,ethical,and policy issues in *** paper begins by introducing the history and design of the Schwarzman ***,it discusses the new opportunities that the College of computing has created at MIT,specifically the common ground for computing education and the social and ethical responsibilities of computing programs.

关键词： Resource management   Noise measurement   Heuristic algorithms   Network function virtualization   Software   Computer science   Mathematical models   Network function virtualization   performance bottleneck   rate coordination   service chain   traffic scheduling  

摘要： Network service provisioning becomes flexible and programmable with the help of Network Function Virfitualization (NFV), since NFV abstracts various service functions into software components called Virtual Network Function (VNF) and VNFs can be flexibly and quickly composed to form new services. It is commonly known that sharing the same VNF among different services can improve the resource utilization. However, we should be aware that such sharing also leads to serious resource preemption. In addition, VNF sharing aggravates the generation of the performance bottleneck, which then causes the rate mismatch problem between the upstream and downstream VNFs belonging to the same service chain. In this article, we propose a dynamic and flexible algorithm to jointly address the VNF sharing resource allocation and the rate coordination between the upstream and downstream VNFs. Specifically, 1) the VNFs are shared among different service chains with a fairness factor considered for the purpose of reducing the resource preemption probability and improving the resource utilization;2) the backpressure indicator of each VNF is defined to judge its pressure condition, based on which we can dynamically adjust the processing rates between it and its downstream or upstream VNFs by maximizing the idle resource utilization. The experimental results indicate that the proposed algorithm outperforms the other methods in terms of the average delay, the flow completion time, the throughput and the backlog, etc. Meanwhile, the proposed algorithm achieves more stable performance than the other methods.

关键词： 信息技术教师   人工智能教学效能感   教师专业发展   TPACK  

摘要： 当前中小学人工智能课程建设已纳入国家战略发展规划,然而师资匮乏成为课程建设的瓶颈,亟须大力开展有效的教师专业发展活动。其中,教学效能感的培养会直接影响教师的教学投入、教学实践以及学生的学习效果。因此,文章基于TPACK理论设计专业发展知识体系,结合教学自我效能感提升途径和有效教师专业发展要素构建了线上线下融合的专业发展活动框架,并以40位信息技术教师为研究对象开展了为期25天的实验干预。问卷和访谈的数据分析结果显示,这种专业发展活动显著提升了信息技术教师的人工智能教学效能感,且具有不同先验知识的教师之间不存在显著性差异。这些发现揭示了文章所构建的专业发展知识体系和活动框架在提升中小学信息技术教师人工智能教学效能感方面的有效性,并会对信息技术教师的人工智能教学实践和学生学习结果产生积极的影响。

关键词： Computer Science   College Education   University Social Responsibility  

摘要： Alongside the development of computer science,many fields like engineering,finance and the natural sciences increasingly leverage computer science techniques to facilitate their own *** a result,students now need to have a good grasp of computer science skills in order to keep pace with the new forms of working in these other ***,higher education need to change to support this *** Science 2.0 refers to this new way of educating that facilitates these interdisciplinary *** creates exciting opportunities for students and staff to interact across disciplines in teaching,research,and transfer to create the so-called University 2.0.