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IEEE International Symposium on Geoscience and Remote Sensing (IGARSS)

作者： Jinling Zhao Linsheng Huang Hao Yang Dongyan Zhang Zhaoli Wu Junjie Guo Anhui Engineering Laboratory of Agro-Ecological Big Data Anhui University Hefei China Beijing Research Center for Information Technology in Agriculture Beijing Academy of Agriculture and Forestry Sciences Beijing China Ministry of Education Anhui University Hefei China

ISBN: (纸本)9781509033331

It is highly necessary to merge high spatial resolution panchromatic images with high spectral resolution multispectral images in image processing tasks and thematic applications. WorldView-3 (WV-3) imagery was investigated for generating pan-sharped multispectral imagery. Brovey and NNDiffuse pan sharpening algorithms were comparatively used to perform the image fusion and the quality was also assessed. The results show that, in comparison with Brovey, NNDiffuse pan sharpened image can generally maintain spectral and texture information. Specifically, the spectral consistency was evaluated using four typical land cover types with a performance of vegetation > waterbody > bare land > built-up area in ascending order. The relative errors were 5.13%, 5.26%, 5.99%, 28.28%, respectively. Entropy was used to evaluate the texture feature and NNDiffuse fused image had extremely similar values in Max, Mean and Stdev compared to original panchromatic image, while there were greater differences for Brovey fused image in Mean and Stdev and the relative errors were -16.04% and 64.88%. Additionally, WV-3 has more clear spatial stereo and edges compared to GF-1 with the same spatial resolution.

关键词： Spatial resolution Satellites Remote sensing Image fusion Earth Image edge detection

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Provable multiple replication data possession with full dynamics for secure cloud storage

Provable multiple replication data possession with full dyna...

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作者： Zhang, Yafang Ni, Jianbing Tao, Xiaoling Wang, Yong Yu, Yong Big Data Research Center School of Computer Science and Engineering University of Electronic Science and Technology of China Chengdu611731 China State Key Laboratory of Information Security Institute of Information Engineering Chinese Academy of Sciences Beijing100093 China Department of Electrical and Computer Engineering University of Waterloo WaterlooONN2L 3G1 Canada College of Information and Communication Guilin University of Electronic Technology Guilin541004 China Guangxi Cloud Security and Cloud Service Engineering Research Center Guilin University of Electronic Technology Guilin541004 China

Cloud storage has been gaining tremendous popularity among individuals and corporations because of its low maintenance cost and on-demand services for the clients. To improve the availability and the reliability of critical data, storing multiple replicas on multiple servers is a commonly used strategy. Currently, several provable data possession (PDP) protocols for multiple replicas of dynamic data have been proposed to ensure the integrity of outsourced multi-copy data, but the efficiency of these protocols on verifying multiple replicas one by one is not satisfactory. In this paper, we propose a provable multiple replication data possession protocol with full dynamics, named MR-DPDP. In MR-DPDP, we utilize a novel authenticated data structure called Merkle hash tree with rank to support both full dynamic data updates and efficient integrity verification. In addition, our construction with RSA signature can support both variable-sized file blocks and public verification. Through security proof and performance evaluation, we demonstrate that MR-DPDP not only is sound but also incurs less communication overhead when updating data blocks as well as verifying a proof of the integrity of multiple replicas. Copyright © 2015 John Wiley & Sons, Ltd.

关键词： Cloud storage

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Utilizing Cat Swarm Optimization in Allocating the Sink Node in the Wireless Sensor Network Environment 3

Utilizing Cat Swarm Optimization in Allocating the Sink Node...

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3rd International Conference on Computing Measurement Control and Sensor Network, CMCSN 2016

作者： Tsai, Pei-Wei Kong, Lingping Vaclav, Snasel Pan, Jeng-Shyang Istanda, Vaci Hu, Zhi-Yong College of Information Science and Engineering Fujian University of Technology Fuzhou China Fujian Provincial Key Laboratory of Big Data Mining and Applications Fujian University of Technology Fuzhou China Innovative Information Industry Research Center Harbin Institute of Technology Shenzhen Graduate School Shenzhen China Department of Computer Science VSB Technical University of Ostrava Ostrava Czech Republic Council of Indigenous Peoples Executive Yuan New Taipei City Taiwan

ISBN: (纸本)9781509010936

A general wireless sensor network (WSN) is a system composed of a large number of sensor nodes. In the WSN system, all sensor nodes are responsible for sensing the interested events and transmitting the related information back to the sink node. The sink node acts like the brain of the whole WSN system for processing the collected data and giving control commands. The position of the sink node directly affects the data transmission efficiency and the distance from the terminal sensor node to the sink node. Thus, choosing the correct place to place the sink node in the whole network is a delicate work. In this paper, we propose a sink node placement method by proposing a newly designed object function and utilizing Cat Swarm Optimization (CSO) to find out the near best location for placing the sink node. The simulation results indicate that our proposed method presents good performance compared with the conventional Particle Swarm Optimization (PSO) algorithm in reducing the overall energy consumption and prolongs the lifetime of network in an efficient way. © 2016 IEEE.

关键词： Sensor nodes

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Randomness evaluation for an optically injected chaotic semiconductor laser by attractor reconstruction

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Physical Review E 2016年第4期94卷 042214-042214页

作者： Xiao-Zhou Li Jun-Ping Zhuang Song-Sui Li Jian-Bo Gao Sze-Chun Chan Department of Electronic Engineering City University of Hong Kong Hong Kong China Institute of Complexity Science and Big Data Technology Guangxi University Nanning Guangxi China State Key Laboratory of Millimeter Waves City University of Hong Kong Hong Kong China

State-space reconstruction is investigated for evaluating the randomness generated by an optically injected semiconductor laser in chaos. The reconstruction of the attractor requires only the emission intensity time series, allowing both experimental and numerical evaluations with good qualitative agreement. The randomness generation is evaluated by the divergence of neighboring states, which is quantified by the time-dependent exponents (TDEs) as well as the associated entropies. Averaged over the entire attractor, the mean TDE is observed to be positive as it increases with the evolution time through chaotic mixing. At a constant laser noise strength, the mean TDE for chaos is observed to be greater than that for periodic dynamics, as attributed to the effect of noise amplification by chaos. After discretization, the Shannon entropies continually generated by the laser for the output bits are estimated in providing a fundamental basis for random bit generation, where a combined output bit rate reaching 200 Gb/s is illustrated using practical tests. Overall, based on the reconstructed states, the TDEs and entropies offer a direct experimental verification of the randomness generated in the chaotic laser.

关键词： Control & applications of chaos Chaotic systems Semiconductor lasers Chaos & nonlinear dynamics

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Promoting Business Analytics and Quantitative Management of technology: Preface for ITQM 2016

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Procedia Computer Science 2016年 91卷 1-8页

作者： Lee, Heeseok Shi, Yong Lee, Jongwon Cordova, Felisa Dzitac, Ioan Kou, Gang Li, Jaiping College of Business Korea Advanced Institute Science and Technology Dongdaemum-gu Seoul130-722 Korea Republic of Research Center on Fictitiotus Economy and Data Science Key Lab of Big Data Mining and Knowledge Management Chinese Academy of Sciences Beijing100190 China College of Information Science and Technology University of Nebraska at Omaha OmahaNE68182 United States School of Business Administration Hoseo University Asan-si Chungcheongnam-do336-795 Korea Republic of Faculty of Engineering and Business University Finis Terrae Pedro de Valdivia 1509. Providencia Santiago Chile Universitatea Agora Agora University Piata Tineretului 8 Oradea410526 Romania School of Business Administration Southwestern University of Finance and Economics Chengdu Sichuan61130 China Institute of Policy and Management Chinese Academy of Sciences Beijing100190 China

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Analysis of volatilities and correlations for chinese stock markets

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Journal of Information Hiding and Multimedia Signal Processing 2016年第5期7卷 1110-1125页

作者： Zhang, Ji Lin Lai, Yong Zeng Tsai, Pei-Wei School of Mathematics and Physics Fujian Provincial Key Laboratory of Big Data Mining and Applications Fujian University of Technology Fuzhou350108 China Department of Mathematics Wilfrid Laurier University 75 Universit Ave. E WaterlooONN2L 3C5 Canada College of Information Science and Engineering Fujian Provincial Key Laboratory of Big Data Mining and Applications Fujian University of Technology Fuzhou350108 China

In this paper, GARCH, EG ARCH and GJR models are used to fit the volatilities of stock returns for two markets in China, namely, the Shanghai Stock Exchange (SSE) and the Shenzhen Stock Exchange (SZSE) in both the developing and the developed stages. We also compare the performance of the volatilities and the leverage effects both across and within the two markets. Furthermore, we use VAR model to detect the correlation between the targeted markets based on impulse response and variance decomposition analyses. The experimental results indicate that the markets are less volatile and positively skewed in the developing phase while these are more volatile and negatively skewed in the developed phase. Another finding is that one standard-deviation innovation impulses die out after 7 days in the targeted markets and the impact of the SSE on the SZSE is stronger than that of the SZSE on the SSE. © 2016, Ubiquitous International. All Rights Reserved.

关键词： Impulse response

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Light trapping characteristics of glass substrate with hemisphere pit arrays in thin film Si solar cells

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Chinese Physics B 2015年第4期24卷 16-21页

作者：陈乐王庆康王阳培华黄堃沈向前 Key Laboratory for Thin Film and Micro-fabrication of the Ministry of Education Department of Microelectronics and NanoscienceShanghai Jiao Tong University College of Physical Science and Technology Engineering Guangxi Universities Key Laboratory of Complex System Optimization and Big Data Processing Yulin Normal University

In this paper, the light trapping characteristics of glass substrate with hemisphere pit （HP） arrays in thin film Si solar cells are theoretically studied via a numerical approach. It is found that the HP glass substrate has good antireflection properties. Its surface reflectance can be reduced by - 50% compared with planar glass. The HP arrays can make the unabsorbed light return to the absorbing layer of solar cells, and the ratio of second absorption approximately equals 30%. Thus, the glass substrate with the hemisphere pit arrays （HP glass） can effectively reduce the total reflectivity of a solar celt from 20% to 13%. The lip glass can also prolong the optical path length. The numerical results show that the total optical path length of the thin film Si solar cell covered with the HP glass increases from 2ω to 409. These results are basically consistent with the experimental results.

关键词： numerical approach light trapping hemispherical pit （HP） optical path length solar cells

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Assessment of winter wheat fresh biomass at seeding based on canopy image analysis

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International Agricultural engineering Journal 2016年第4期25卷 171-178页

作者： Zheng, Ling Zhu, Dazhou Wang, Cheng Xu, Chao Huang, Lingsheng Liang, Dong Ministry of Education Hefei230039 China Anhui Engineering Laboratory of Agro-Ecological Big Data Anhui University Hefei230601 China Institute of Food and Nutrition Development Ministry of Agriculture Beijing100081 China Beijing Research Center for Information Technology in Agriculture Beijing100097 China

The growth and development of winter wheat at seedling directly influence the nutritional quality and the crops yield. The surface biomass reflects the crop vigor at the seeding stage. In order to monitor the winter wheat growth efficiently, accurately and at low cost, this study researched the image features of the winter wheat canopy and the best monitor model. The Daheng IMAVISION's DH-HV3151UC-M industrial camera with 3 million pixels was used to capture the winter wheat canopy images of the 20 different cultivars during the seeding stage. Then the ground fresh weight of the winter wheat was detected by using weighing method. The characteristic parameters of the image were extracted to build the wheat coverage by image processing, and the relationship between the wheat coverage and the winter wheat biomass was studied. The results showed that the winter wheat biomass was different in the different period as the vegetation, and the wheat coverage changed in accord with the winter wheat biomass of different cultivars at the different planting densities. Regression Analysis was used to establish the correlative model of wheat coverage vs. the winter wheat biomass by using 80 sets of data, and it can be found that the exponential function was the best model (R2=0.834,RMSE=0.012). The rest 39 sets of data were taken to validate the model (R2=0.777, RMSE=0.016). The result of this study indicated that it was significant for monitoring the winter wheat biomass using the canopy image at seeding. © 2016, Asian Association for Agricultural engineering. All rights reserved.

关键词： Biomass

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Design of substation and distribution station monitoring system based on DELPHI and intelligent modules

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Journal of Information Hiding and Multimedia Signal Processing 2016年第4期7卷 818-825页

作者： Zheng, Rongjin Huang, Xiaosheng Deng, Huiqiong College of Information Science and Engineering Fujian Provincial Key Laboratory of Big Data Mining and Applications Fujian University of Technology No3 Xueyuan Road University Town Minhou Fuzhou CityFujian Province350118 China

It builds a kind of hierarchical distributed computer monitoring and control system through adding communication modules and intelligent acquisition modules without changing the primary equipment of 10 kV substation and distribution station. DELPHI is brought in the communication software which based on MODBUS-RTU protocol. And the problems of monitoring and control from distribution modules are solved. It also develops human-machine interface and realizes the monitoring of substation and distribution station. Therefore, the automation level of substation and distribution station is improved greatly. © 2016.

关键词： Monitoring

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A characteristic-preserving steganographic method based on revision identifiers

International Journal of Multimedia and Ubiquitous Engineeri...

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International Journal of Multimedia and Ubiquitous engineering 2016年第9期11卷 29-38页

作者： Xiang, Lingyun Sun, Caixia Liao, Niandong Wang, Weizheng Hunan Provincial Key Laboratory of Intelligent Processing of Big Data on Transportation Changsha University of Science and Technology ChangshaHunan Province410114 China School of Computer and Communication Engineering Changsha University of Science and Technology ChangshaHunan Province410114 China

Since the majority of the available steganographic schemes in OOXML format documents suffered the disadvantages of unsatisfactory anti-detection capability and security level, a characteristic-preserving steganographic method with high security is proposed in this paper. The proposed method embeds secret information by replacing the last three bytes of the values of the revision identifiers in the main document body of the OOXML format document, while preserving the normal characteristics of the document. Meanwhile, position marks are added to track the locations of the embedded information. In order to keep the internal data consistency of the document, the newly created values are added into other related parts. Experimental results show that the method not only possesses good imperceptibility and anti-detection capability, but also has high security and large embedding capacity. © 2016 SERSC.

关键词： Anti-detection Characteristic-preserving OOXML Revision identifier Steganography

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