In order to improve the anti-submarine warfare capability, an anti-submarine UUV swarm system based on distributed operation theory is proposed. This paper describes the basic concept of the distributed operation theo...
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ISBN:
(纸本)9781728197241
In order to improve the anti-submarine warfare capability, an anti-submarine UUV swarm system based on distributed operation theory is proposed. This paper describes the basic concept of the distributed operation theory and the anti-submarine operational mode of the UUV swarm, designs the system architecture, basic composition and control structure of the UUV swarm, and finally describes the operational workflow of the UUV swarm in detail. The proposed system integrates artificial intelligence technology, distributed operation concept and swarm tactics, which can effectively promote the diversification of the underwater battlefield awareness and the systematization of anti-submarine warfare so as to improve the naval cooperative anti-submarine warfare effectiveness and undersea control capability.
This paper introduces the distributed multimedia system and its characteristics, discusses the application of distributed multimedia system in the field of teaching, And distributed multimedia system management mode i...
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ISBN:
(纸本)9781467365932
This paper introduces the distributed multimedia system and its characteristics, discusses the application of distributed multimedia system in the field of teaching, And distributed multimedia system management mode in colleges and universities are discussed in this paper. The traditional multimedia equipment management in the real world problems is analyzed, and put forward some improvement measures on the basis of these problems, on this basis, the distributed multimedia equipment management in colleges and universities pattern carries on the preliminary exploration and research.
Twig query is considered the core query pattern in most XML query language. With the XML document size becoming larger, single site cannot deal with such volume data in storage capacity and compute ability. Partitioni...
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ISBN:
(纸本)9781479941698
Twig query is considered the core query pattern in most XML query language. With the XML document size becoming larger, single site cannot deal with such volume data in storage capacity and compute ability. Partitioning the large data and distributed parallel processing query is an efficient and effective way. This paper proposes TwigMRR algorithm for evaluating XML twig query over large XML data that is encoded by Dewey, partitioned horizontally and distributed storage in a cluster. TwigMRR is based on MapReduce and extended a new model Map-Reduce-Reduce to get the final results for twig query. The experimental results show that our approach is scalable and efficient on this problem.
Many applications spend a large proportion of the execution time to access files. To narrow the increasing gap between computing and I/O performance, several optimization techniques were adopted, such as data prefetch...
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ISBN:
(纸本)9781728128658
Many applications spend a large proportion of the execution time to access files. To narrow the increasing gap between computing and I/O performance, several optimization techniques were adopted, such as data prefetching and data layout optimization. However, the effectiveness of these optimization processes heavily depends on the understanding of the I/O behavior. Traditionally, spatial locality and temporal locality are mainly considered for data prefetching and scheduling policy. Whereas for most real-world workloads, the file access pattern is hard to capture. For the goal of deeply and intelligently understanding the I/O access pattern of modern applications, and efficiently optimizing the performance of current file systems, we propose a new mechanism to embed file names to vectors and train a gated recurrent neural network to provide policies for file prefetching and cache replacing.
Food safety is a major problem concerning people's livelihood. With the advent of the era of Internet, many people choose to order food online, while the regulation of online food safety is faced with enormous cha...
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ISBN:
(纸本)9781728197241
Food safety is a major problem concerning people's livelihood. With the advent of the era of Internet, many people choose to order food online, while the regulation of online food safety is faced with enormous challenges. Through the analysis of the comments data from third-party platform, a food safety evaluation dataset of violation and risk is constructed. In order to find the relationship between the comment data and risks level of online food, a novel parallelized distributed long and short term memory network model is proposed to predict the risk value of merchants, and an early warning system for network takeout merchants is established.
engineering Computational Service Grid Portal (ECSGP) is an engineering computational environment for integrating design resources effectively by using Grid portal technology. For ECSGP, the secure job process by inte...
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ISBN:
(纸本)9780769541105
engineering Computational Service Grid Portal (ECSGP) is an engineering computational environment for integrating design resources effectively by using Grid portal technology. For ECSGP, the secure job process by integrating proxy credential, authentication trust level, and secure BPEL(business Process Execution Language) engine is proposed, and the implementation technologies are analyzed in this paper. The research results in this paper provide the basis for constructing ECSGP.
This paper covers the fast solution of large acoustic problems on low-resources parallel platforms. A domain decomposition method is coupled with a dynamic load balancing scheme to efficiently accelerate a geometrical...
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ISBN:
(纸本)9781479941698
This paper covers the fast solution of large acoustic problems on low-resources parallel platforms. A domain decomposition method is coupled with a dynamic load balancing scheme to efficiently accelerate a geometrical acoustic method. The geometrical method studied implements a beam-tracing method where intersections are handled as in a ray-tracing method. Beyond the distribution of the global processing upon multiple sub-domains, a second parallelization level is operated by means of multi-threading and shared memory mechanisms. Numerical experiments show that this method allows to handle large scale open domains for parallel computing purposes on few machines. Urban acoustic pollution arrising from car traffic was simulated on a large model of the Shinjuku district of Tokyo, Japan. The good speed-up results illustrate the performance of this new domain decomposition method.
Based on system dynamics modeling method, the nonlinear model of the cloud computing virtual machines scheduling is built. With system dynamics methodology and the use of simulation tools, from a system perspective on...
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ISBN:
(纸本)9781479941698
Based on system dynamics modeling method, the nonlinear model of the cloud computing virtual machines scheduling is built. With system dynamics methodology and the use of simulation tools, from a system perspective on cloud computing service requirements and building scale, the key factors affecting the number of cloud computing machines are identified. Furthermore, mathematical statistical theory and methods are used to find out optimal estimation and implementation of the construction scale with regarding to the decisive factor. The regression equations are submitted and the credibility of the regression equations is verified.
With the development of cloud computing and mobile Internet, the issues related to big data have been concerned by both academe and industry. Based on the analysis of the existed work, the research progress of how to ...
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ISBN:
(纸本)9780769550602
With the development of cloud computing and mobile Internet, the issues related to big data have been concerned by both academe and industry. Based on the analysis of the existed work, the research progress of how to use distributed file system to meet the challenge in storing big data is expatiated, including four key techniques: storage of small files, load balancing, copy consistency, and de-duplication. We also indicate some key issues need to concern in the future work.
Evaluation and performance analysis of an online collaborative project are never easy tasks because the massive human involvement and other qualitative factors are hard to assess. To figure out the relationship betwee...
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ISBN:
(纸本)9781479941698
Evaluation and performance analysis of an online collaborative project are never easy tasks because the massive human involvement and other qualitative factors are hard to assess. To figure out the relationship between human related factors and quality of collaboration outcomes, we propose an effective formal approach to estimate the human involvement in collaboration process and testify our method on 100 articles extracted from Wikipedia and Scholarpedia, the qualities of whose historical contents have been evaluated manually by volunteers of specific background. Through comparison of the human involvement and the outcome quality in these two projects, we find that the quality of collaborative products is positively related with the number, dedication and experience of collaboration participants, among which experience decides the necessary amount of human resources for a high quality, and increasing number or dedication of participants can also make up to the lack of experiences.
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