In order to ensure(1) the security and reliability of cloudcomputing services, this paper uses the advantages of middleware in processing heterogeneous systems to establish a cloud middleware model. It realizes the o...
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ISBN:
(纸本)9781450365123
In order to ensure(1) the security and reliability of cloudcomputing services, this paper uses the advantages of middleware in processing heterogeneous systems to establish a cloud middleware model. It realizes the organic combination of software platform and infrastructure platform and proposes a load balancing mechanism based on middleware. It determines the weights of various parameters based on the middleware load conditions and proposes a load balancing algorithm in middleware. It achieves more granular load balancing and ensures the security of cloud services. Finally, a cloud computer distributed system simulation platform is established. The experimental simulation shows that the middleware load balancing mechanism has good performance in cloud load balancing.
This paper deals with the main principles and requirements of building a distributed fault-tolerant computing system for Microgrid needs. This includes hardware and software infrastructure for managing power generatio...
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ISBN:
(纸本)9781728163826
This paper deals with the main principles and requirements of building a distributed fault-tolerant computing system for Microgrid needs. This includes hardware and software infrastructure for managing power generation, transmission, consumption and accumulation processes. The system is built on the base of ARM64 SoC computers and microservice paradigm.
Voice over IP (VoIP) is a methodology for transmitting data, video, voice, chat services, and messages over the Internet. Session Initiation Protocol (SIP) is an application layer protocol that is used to initiate, es...
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Current cloudcomputing infrastructures and their management are highly centralized, and therefore they suffer from limitations in terms of network latency, energy consumption, and possible legal restrictions. Decentr...
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ISBN:
(纸本)9781538664889
Current cloudcomputing infrastructures and their management are highly centralized, and therefore they suffer from limitations in terms of network latency, energy consumption, and possible legal restrictions. Decentralizing the cloud has been recently proposed as an alternative. However, the efficient management of a geographically dispersed platform brings new challenges related to service localization, network utilization and locality-awareness. We here consider a cloud topology composed of many small datacenters geographically dispersed within the backbone network. In this paper, we present the design, development and experimental validation of Koala, a novel overlay network that specifically targets such a geographically distributedcloud platform. The three key characteristics of Koala are laziness, latency-awareness and topology-awareness. By using application traffic, Koala maintains the overlay lazily while it takes locality into account in each routing decision. Although Koala's performance depends on application traffic, through simulation experiments we show that for a uniformly distributed traffic, Koala delivers similar routing complexity and reduced latency compared to a traditional proactive protocol, such as Chord. Additionally, we show that despite its passive maintenance, Koala can appropriately deal with churn by keeping the number of routing failures low, without significantly degrading the routing performance. Finally, we show how such an overlay adapts to a decentralized cloud composed of multiple small datacenters.
cloudcomputing is ubiquitous and very recent trend in computer technology. Everyday inventions carried out in cloudcomputing. cloudcomputing is developed to overcome and solve the traditional computer system proble...
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distributedcomputing is a form of computing in which a group of independent systems are connected to a computer network. cloudcomputing is one of the emerging domain in the field of Computer Science. With the help o...
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An investigation into the variables that have a bearing on the acceptance of D-learning (Digital-learning) services such as Electronic-learning and Mobile-learning, in two universities of Jordan is presented along wit...
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The frequent subgraphs are the subgraphs which appear in a number, more than or equal to a user-defined threshold. Many algorithms assume that the apriori based approach yields an efficient result for finding frequent...
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Power flow control is vital in microgrids whether it is AC or DC microgrid. Many Droop control techniques are used to efficiently control the power injected by DGs (distributed generators) in a decentralized manner. R...
Power flow control is vital in microgrids whether it is AC or DC microgrid. Many Droop control techniques are used to efficiently control the power injected by DGs (distributed generators) in a decentralized manner. Residential low rating microgrids are eventually increasing which are hybrid in nature and need to control the power injected to a grid in grid-connected and to meet power balance in Islanded modes. A modified current based power point tracking is proposed in this paper to improve transient behavior of DC side parameters thus improves DC bus voltage regulation and Proportional resonant control is introduced which is responsible to control the active and reactive power flow simultaneously from inputs given by droop controller. The same reference is used to extend the droop control strategy in a grid-connected case also with necessary modifications.
The application of parallelization to fuzzing can effectively improve test efficiency. But with the expansion of node scale, synchronization mechanism will become the bottleneck. To solve this problem, this paper pres...
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ISBN:
(纸本)9781450364607
The application of parallelization to fuzzing can effectively improve test efficiency. But with the expansion of node scale, synchronization mechanism will become the bottleneck. To solve this problem, this paper presents a method which is suitable for large-scale parallelization to generate test cases. It simplifies the execution path of tree form into a one-dimensional array by preprocessing, which ensures validity and reduces processing time. This paper also designs and implements a parallel fuzzing system using this method. The system uses a polling mechanism to reduce repetitive tasks. A jump-oriented strategy is adopted to reduce redundancy when filtering crashes. At the end of this paper, the effectiveness of the system in improving the efficiency of fuzzing is further demonstrated through experiments.
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