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Search Results: 1 - 10 of 49231 matches for " Xia Lin "
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A Web Server Cluster Solution Based on Twitter Storm  [PDF]
Xiaoling Xia, Lin Tian
Journal of Data Analysis and Information Processing (JDAIP) , 2014, DOI: 10.4236/jdaip.2014.21002
Abstract:

Single Web server would become a bottleneck that influences the availability and stability of Web service. Ten years ago, what had been proposed is to add Web servers for resolving this problem—Web Server Cluster. In recent years, the concept of cloud computing has got rapid development, and is becoming the future development trend of the IT industry. One of the characteristics of cloud computing is putting lots of computing resources together to provide users with a unified service. In this paper, we have proposed a new Cloud-Based Web Server Cluster Solution, based on the existing cloud computing model—Twitter Storm. It involves a new way to handle the web request from client and some other new features compared to the traditional Web Server Cluster. Combining with cloud computing, it would be the new trend of Web Server Cluster, and its feasibility is described in the paper too.

The Inertial Manifold for Class Kirchhoff-Type Equations with Strongly Damped Terms and Source Terms  [PDF]
Guoguang Lin, Xiangshuang Xia
Applied Mathematics (AM) , 2018, DOI: 10.4236/am.2018.96050
Abstract:
In this paper, we study the inertial manifolds for a class of the Kirchhoff-type equations with strongly damped terms and source terms. The inertial manifold is a finite dimensional invariant smooth manifold that contains the global attractor, attracting the solution orbits by the exponential rate. Under appropriate assumptions, we firstly exert the Hadamard’s graph transformation method to structure a graph norm of a Lipschitz continuous function, and then we prove the existence of the inertial manifold by showing that the spectral gap condition is true.
The Exponential Attractor for a Class of Kirchhoff-Type Equations with Strongly Damped Terms and Source Terms  [PDF]
Guoguang Lin, Xiangshuang Xia
Journal of Applied Mathematics and Physics (JAMP) , 2018, DOI: 10.4236/jamp.2018.67125
Abstract: This paper studies the exponential attractor for a class of the Kirchhoff-type equations with strongly damped terms and source terms. The exponential attractor is also called the inertial fractal set, which is an intermediate step between global attractors and inertial manifolds. Obtaining a set that attracts all the trajectories of the dynamical system at an exponential rate by the methods of Eden A. Under appropriate assumptions, we firstly construct an invariantly compact set. Secondly, showing the solution semigroups of the Kirchhoff-type equations is squeezing and Lipschitz continuous. Finally, the finite fractal dimension of the exponential attractor is obtained.
The Global and Pullback Attractors for a Strongly Damped Wave Equation with Delays*  [PDF]
Guoguang Lin, Fangfang Xia, Guigui Xu
International Journal of Modern Nonlinear Theory and Application (IJMNTA) , 2013, DOI: 10.4236/ijmnta.2013.24029
Abstract:

In this paper, we study the global and pullback attractors for a strongly damped wave equation with delays when the force term belongs to different space. The results following from the solution generate a compact set.

A Multiscale Energetic Diagnosis of the Response of Mokpo Sea to Typhoon Bolaven  [PDF]
Xia Chai, Lin Wang
Journal of Geoscience and Environment Protection (GEP) , 2019, DOI: 10.4236/gep.2019.78019
Abstract:
The ocean response to typhoon is usually characterized by a cooling on the sea surface. In August 2012, however, a warming (instead of cooling) event occurs in the Yellow Sea outside Mokpo, South Korea, as the typhoon Bolaven (2012) passes. This study gives a brief introduction to this abnormal sea surface warming. It also provides a multiscale energetic diagnosis of the oceanic response to Typhoon Bolaven. We used a recently developed analysis tool named “multiscale window transform” (MWT). Based on the MWT, we also expanded a localized multiscale energy and vorticity analysis (MS-EVA). The fields are reconstructed onto three scale windows: large-scale, abnormal warming-scale, and high frequency tide-scale windows. The results show that the kinetic energy (KE) in the abnormal warming-scale window of the Mokpo area is obviously enhanced during the passage of Bolaven, which can be attributed to three processes: transfer, transport process of KE and wind stress work. At the same time, the large-scale window in the Mokpo area experiences barotropic instabilities with KE transfers from large-scale window to warming-scale window. Besides, the strong wind stress bought by the passage of Bolaven not only inputs a large amount of KE into warming-scale window, but also causes the increase of KE flux convergence.
Effects of Duration and Contents of Mindfulness Training on Depression  [PDF]
Qiong Wu, Lin Shi, Zhipeng Xia, Lida Lu
Psychology (PSYCH) , 2013, DOI: 10.4236/psych.2013.46A1002
Abstract:

This study aimed to find a simple and effective mindfulness training method for intervening depression. 95 university students with moderate or severe depression participated in the study and they were divided into three mindfulness training groups: 8-week complete group, 8-week informal group, and 4-week group. All subjects completed Beck Depression Inventory (BDI-) and Five Fact Mindfulness Questionnaire (FFMQ) before the intervention, after which, 55 subjects completed the assessments once more. Results showed the scores of specific dimensions representing mindfulness levels were different. For the 4-week group, scores of description, action aware and nonjudge significantly were improved, while the other two groups were improved significantly on all the five dimensions, especially the informal training group. In the discussion, it focused more on the effects of training time and training contents, and briefly discussed the relation of subjects dropout, subjects attendance, homework completion status and intervention effects. In conclusion, all the three intervention modes have magnificent intervention effects. Integrated many sided, 8-week informal training is of the best effects, which may be considered as a better mindfulness training mode henceforth, however, the comparison between the formal training and informal training still needs further study.

Research on Voltage Losses of AT Traction Power Supply System  [PDF]
Yujie Xia, Guosong Lin, Liya Guo, Qiang Li
Energy and Power Engineering (EPE) , 2013, DOI: 10.4236/epe.2013.54B150
Abstract:

Unilateral power supply system has been used because of the management status of the power grid system, while, bilateral power supply system is adopted in the Soviet Union and France. The feasibility that whether bilateral system can be put applied in China is discussed. Compared with unilateral power supply system, bilateral system has better reliability and better capability of supply power system, which gives bilateral system more advantages over unilateral system on both engineering investment and operating efficiency. In this paper, voltage losses under the two different systems are calculated and also compared, the advantages of bilateral system is explored and then conclusion is drawn by referring to the practical data of passenger transport lines.

Analysis and prediction of exon, intron, intergenic region and splice sites for A. thaliana and C. elegans genomes  [PDF]
Hao Lin, Qian-Zhong Li, Cui-Xia Chen
Journal of Biomedical Science and Engineering (JBiSE) , 2009, DOI: 10.4236/jbise.2009.26053
Abstract: Although a great deal of research has been undertaken in the area of the annotation of gene structure, predictive techniques are still not fully developed. In this paper, based on the characteristics of base composition of sequences and conservative of nucleotides at exon/intron splicing site, a least increment of diversity al-gorithm (LIDA) is developed for studying and predicting three kinds of coding exons, introns and intergenic regions. At first, by selecting the 64 trinucleotides composition and 120 position parameters of the four bases as informational parameters, coding exon, intron and intergenic sequence are predicted. The results show that overall predicted accuracies are 91.1% and 88.4%, respectively for A. thaliana and C. ele-gans genome. Subsequently, based on the po-sition frequencies of four kinds of bases in regions near intron/coding exon boundary, initia-tion and termination site of translation, 12 position parameters are selected as diversity source. And three kinds of the coding exons are predicted by use of the LIDA. The predicted successful rates are higher than 80%. These results can be used in sequence annotation.
Positive-Definite Sparse Precision Matrix Estimation  [PDF]
Lin Xia, Xudong Huang, Guanpeng Wang, Tao Wu
Advances in Pure Mathematics (APM) , 2017, DOI: 10.4236/apm.2017.71002
Abstract: The positive-definiteness and sparsity are the most important property of high-dimensional precision matrices. To better achieve those property, this paper uses a sparse lasso penalized D-trace loss under the positive-definiteness constraint to estimate high-dimensional precision matrices. This paper derives an efficient accelerated gradient method to solve the challenging optimization problem and establish its converges rate as \"\". The numerical simulations illustrated our method have competitive advantage than other methods.
The design and implementation of a very fast experimental pipelining computer
The Design and Implementation of a Very Fast Experimental Pipelining Computer

Qi Lin,Peisu Xia,
Lin Qi
,Xia Peisu

计算机科学技术学报 , 1988,
Abstract: The high speed potential of I.C. components can be exploited by shortening the pipeline clock period. Although there are some factors which dominate the shortening, the design of an experimental computer employs the principle of maximum time difference at the system level to determine the clock period and the integrated consideration of architecture, logic design and engineering layout to achieve a system clock period of 9.8 ns using conventional ECL chips of 2ns gate delay. The multiplier in this model, which is constructed with 0.7 ns gate delay chips, can work at a clock period of 5.5 ns. This project is partly supported by National Natural Science Foundation of China.
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