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This paper proposed an innovative education platform-VREX (Virtual Reality based Education eXpansion), with combination of online and offline, to improve the curriculum building and teaching experience. VREX is based on Virtual Reality (VR) and we believe VR can revolutionize the education ecosystem. With some trials, we found VR can be used to promote curriculum effectiveness in an immersive environment...
In the past two decades, due to Taiwans national insurance policy, a substantial amount of medical and patient records have been stored in a large database. From this database, much important medical knowledge has been discovered; however, with the rapid growth of database size, it takes an increasingly long time to process queries on the database, even rather simple queries. We, therefore, propose...
Motived by frequent failures in cloud computing systems, we aim to demystify the underlying rescheduling strategies performed by the scheduler to deal with task failure. In this paper, we comprehensively investigate and compare rescheduling strategies of two large-scale systems, Google cluster and CMU OpenCloud. Moreover, we quantitatively evaluate the performance of different rescheduling strategies...
Software bugs have been one of the dominantcauses of system failures, especially in cloud systems basedon open source platforms. One big challenge fortroubleshooting these cloud systems is to pinpoint thesoftware bug-induced failure in large and complex log fileswhich is a nightmare for administrators. So far, there hasbeen little study on how to identity bug-induced failuresbased on log analysis...
Availability is the most essential attribute of qualities of cloud services. Most popular public cloud services claim availability commitments with corresponding penalties in their SLAs. However, lack of clarity in availability commitment and penalty make it hard for consumers to understand the SLAs well and furthermore, to compare different cloud providers under different contexts, which would even...
Open source software is becoming increasingly important in cloud computing. However, many cloud computing systems suffer from software bugs that cause significant dependability issues. Bug assignment and fixing are crucial parts of software maintenance to improve dependability. In this paper, we conduct an empirical study of 42,880 bug reports from OpenStack bug repository. We study the characteristics...
This paper proposes a comparative study of cloud dependability between two methods -- bug analysis and fault injection for assessing the impact of component failure on cloud service availability. We focus on the IaaS cloud with open source platform Open Stack. The actual bug data are analyzed to show numerical examples of dependability assessment. A fault injection tool has also been developed to...
OpenFlow (OF) Network is a novel network architecture many famous cloud service providers have applied it to build their data center network. The difference between OF Network and traditional network architecture is the decoupling of controller planes and data planes for network management. Intrusion detection is very important in cloud computing to improve system security. Because OF network can...
After analyzing the problems in Chinese financial informatization, it indicates the inevitability for financial informatizition to choose cloud computing. It also discusses the benefits and risks, the operability, the radioactive of financial informatization adopting the cloud computing. At last, it has a summary and outlook for Chinese financial market being rapidly taking part in the international...
Cloud computing provides virtualized resources as a service over the Internet. Migrating workload to virtualized cloud environment will benefit their owners on low cost, as well as dynamic scalability and performance. In this paper, we address the solutions on the migration challenge. An extensible and automatic migration framework is presented and implemented by the tool UCM which has been proved...
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