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International Conference on Parallel and Distributed Systems (ICPADS)

作者： Jixin Zhang Zheng Qin Hui Yin Lu Ou Yupeng Hu College of Computer Science and Electronic Engineering Hunan University Hunan China Hunan Key Laboratory of Big Data Research and Application Hunan China

ISBN: (纸本)9781509053827

Malware detection becomes mission critical as its threats spread from personal computers to industrial control systems. Modern malware generally equips with sophisticated anti-detection mechanisms such as code-morphism, which allows the malware to evolve into many variants and bypass traditional code feature based detection systems. In this paper, we propose to disassemble binary executables into opcodes sequences, and then convert the opcodes into images. By using convolutional neural network to compare the opcode images generated from binary targets with the opcode images generated from known malware sample codes, we can detect if the target binary executables is malicious. Theoretical analysis and real-life experiments results show that malware detection using visualized analysis is comparable in terms of accuracy, our approach can significantly improve 15% of detection accuracy when the detection set contains a large quantity of binaries and the training set is much smaller.

关键词： Malware Image recognition Training Feature extraction Image reconstruction Histograms Neural networks

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Influences of excitation power and temperature on photoluminescence in phase-separated InGaN quantum wells

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Chinese Physics B 2015年第2期24卷 237-241页

作者：王强冀子武王帆牟奇郑雨军徐现刚吕元杰冯志红 School of Physics Shandong University School of Science Qilu University of Technology State Key Laboratory of Crystal Materials Shandong University National Key Laboratory of Application Specific Integrated Circuit(ASIC) Hebei Semiconductor Research Institute

The photoluminescence（PL） properties of a green and blue light-emitting InGaN/GaN multiple quantum well structure with a strong phase separated into quasi-quantum dots（QDs） and an InGaN matrix in the InGaN epilayer are *** excitation power dependences of QD-related green emissions（PD〉） and matrix-related blue emissions（PM） in the low excitation power range of the PL peak energy and line-width indicate that at 6 K both Pm and PD are dominated by the combined action of Coulomb screening and localized state filling ***,at 300 K,Pm is dominated by the non-radiative recombination of the carriers in the InGaN matrix,while PD is influenced by the carriers transferred from the shallower QDs to deeper QDs by *** is consistent with the excitation power dependence of the PL efficiency for the emission.

关键词： photoluminescence InGaN quantum wells phase separation

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Model of three-way decision based on the space of set pair information granule and its application

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Tongxin Xuebao/Journal on Communications 2016年 37卷 15-24页

作者： Zhang, Chun-Ying Wang, Li-Ya Li, Ming-Xia Liu, Bao-Xiang College of Science North China University of Science and Technology Tangshan063009 China Key Laboratory of Data Science and Application of Hebei Province Tangshan063009 China

Through the analysis of the existing theory and method of three-way decision, model of three-way decision based on the space of set pair information granule was proposed, which was to explain the intension and extension of three-way decision on the view of unity of opposites. Firstly the space structure of set pair information granule can be divided into positive granule, negative granule, different granule, which were similar and slightly different with three regions of generalized three-way decision. The three kinds of information granules in set pair information granule space were built based on certain positive degree, negative degree and different degree. Secondly, according to the given threshold, set pair information granule is divided into mutually disjointing positive region, negative region and different region. Based on these three regions, the computing method of decision loss function is put forward, and the process of decision-making algorithm is obtained use the three-way decision method of set pair information granule space to evaluate and make decision on risk investment, then good decision results have been achieved. © 2016, Editorial Board of Journal on Communications. All right reserved.

关键词： Decision making

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Effects of grafting on free fatty acid contents and related synthetic enzyme activities in peel and flesh tissues of oriental sweet melon during the different development period

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IOP Conference Series: Earth and Environmental science 2018年第1期185卷

作者： J H Hao Z Y Qi J R Li C J Liu L Wang W T Jin X Li H Y Qi Beijing Key Laboratory for Agricultural Application and New Technique College of Plant Science and Technology Beijing University of Agriculture No. 7 Beinong Road Changping District Beijing P. R. of China Administration Office for public service in Benxi city of Liaoning Province No. 101 Jiefang North Road Mingshan District Benxi P. R. of China Agricultural Bureau of Jing Country of Hebei Province No.36 Jinghua Road Jing Country Hebei P. R. of China Key Laboratory of Protected Horticulture of Education Ministry and Liaoning Province College of Horticulture Shenyang Agricultural University No. 120 Dong Lin Road Shenhe District Shenyang P. R. of China

In this experiment, white seed pumpkin 'Shengzhen No. 1' was used as rootstock for the oriental sweet melon (Cucumis melo L.) 'Yumeiren'. The fruits of own-rooted melons were used as control. The objective of this experiment was to study the effects of grafting on the following parameters: content of free fatty acids and activities of synthetic enzymes (LOX, ADH, and AAT). These parameters were measured in the peel and flesh tissues of oriental sweet melon at different time-points. Due to grafting, the content of oleic acid and linolenic acid decreased in peel tissues of melons at early stages of maturity. Therefore, total contents of free fatty acids were lower than those of control. However, there was no significant difference in the content of three free fatty acids in flesh tissue; this content was lower than that in peel tissue. Due to grafting, enzymatic activities of ADH and AAT decreased in peel tissue of melons; however, these enzymes showed different activities in flesh tissues of melons subjected to grafting. Nevertheless, there was no significant difference in enzymatic activities of flesh tissues; however, these activities were lower than that of peel tissue. These results indicate that free fatty acid content and related synthetic enzyme activities decreased when grafting was included in the cultivation of oriental sweet melons. Consequently, the aroma of these melons decreased due to grafting.

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The research of warning model of hidden failure based on data mining

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key Engineering Materials 2016年 693卷 1844-1848页

作者： Liu, Jing Zhu, Qingxiang Yu, Xin Wang, Jingxin Huang, Yige School of Computer Science and Engineering Hebei University of Technology Tianjin300401 China Hebei Key Laboratory of Dig Data Calculation Hebei University of Technology Tianjin300401 China School of Economics and Management Hebei University of Technology Tianjin300401 China School of Economics and Management YanShan University Qinhuangdao066004 China

Complex equipment is mainly used in important areas of national defense, health care, banking, etc. Consequences of failure are relatively severe, while the hidden failures are contained in the most complex devices as the process is running. Hidden failures in the normal operation of the device is difficult to find, and only under certain conditions will be triggered, while other faults may be led. The stability of the running system will be undermined. In order to monitor the occurrence and development of hidden failure of complex equipment, a hidden failure warning model based on data mining has been put forward, and the theory of the model has been analyzed, the selection gist of the model parameters has been given. The result shows that the accuracy of hidden failure impact value forecast by the model is 93.33%, the impact degree of the hidden failure effect on the dominant failure can be effectively monitored, and the model makes a good preventative effect against the sudden failure caused by the hidden failure. © 2016 Trans Tech Publications, Switzerland.

关键词： data mining

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An efficient parallel association rules mining algorithm for fault diagnosis

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key Engineering Materials 2016年 693卷 1326-1330页

作者： Ji, Haipeng Wang, Taiyong Liu, Jing Fan, Shiyan Wang, Zhipeng Zhang, Kairan Mechanical Engineering College Tianjin University Tianjin China Mechanical Engineering College Yanshan University Qinhuangdao Hebei China School of Computer Science and Engineering Hebei University of Technology Tianjin China Hebei Key Laboratory of Dig Data Calculation Hebei University of Technology Tianjin China School of Economics and Management Hebei University of Technology Tianjin China

With the development of Internet industry, equipment data is increasing. The traditional method is not suitable for processing large data. Aiming at inefficient problem of Apriori algorithm when mining very large database, an efficient parallel association rules mining algorithm (Advanced Pruning Parallel Apriori Algorithm) based on a cluster is presented. APPAA algorithm can enhance the mining efficiency, as well as the system's extension. Experimental results show that APPAA algorithm cuts down 85% mining time of Apriori, and it has good characteristics of parallel and *** it is suitable for mining very large size database of fault diagnosis. © 2016 Trans Tech Publications, Switzerland.

关键词： data mining

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Attribute reduction in property oriented concept lattices of formal contexts and formal decision contexts

International Journal of Database Theory and Application

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International Journal of database Theory and application 2016年第9期9卷 37-48页

作者： Li, Junyu Qiang, Zeng Wang, Xia School of Mathematics Physics and Information Science Zhejiang Ocean University China Key Laboratory of Oceanographic Big Data Mining and Application of Zhejiang Province Zhoushan Zhejiang316022 China

This paper studies notions and approaches to attribute reduction in property oriented concept lattices of formal contexts and formal decision contexts based on congruence relations. Firstly, dependence space based on the property oriented concept lattice is researched to obtain the relationship among property oriented concept lattices and the corresponding congruence relations. Then notions of attribute reduction is defined for formal contexts and decision contexts to find minimal attribute subsets which can preserve all congruence classes determined by the original attribute set, and also keep all property oriented extents and their original hierarchy in the property oriented concept lattice. Finally, approaches of discernibility matrix are presented to calculate all attribute reducts. © 2016 SERSC.

关键词： Rough set theory

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Cooperative co-evolution with graph-based differential grouping for large scale global optimization

Cooperative co-evolution with graph-based differential group...

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International Conference on Fuzzy Systems and Knowledge Discovery (FSKD)

作者： Yingbiao Ling Haijian Li Bin Cao School of Data and Computer Science Sun Yat-sen University Guangzhou P.R. China School of Computer Science and Engineering Hebei Province Key Laboratory of Big Data Calculation Tianjin P.R. China

ISBN: (纸本)9781509040940

Cooperative co-evolution framework has been developed for solving large scale global optimization problems. This approach applies the divide-and-conquer strategy that decomposes the problem into subcomponents which can be optimized separately. Nevertheless, the decomposition strategy has important influence on solution quality. In theory, the interdependency between subcomponents should be kept minimum as the subcomponents coadaptation is needed to solve large scale optimization problems. Some state of the art decomposition strategies like differential grouping gain high grouping accuracy on a suite of benchmark functions. In this paper, we use graph theory to model the decomposition problem and propose graph-based differential grouping decomposition strategy to improve the decomposition accuracy of differential grouping. Empirical studies show that our decomposition method get perfect performance on all benchmark functions. Significantly, the solution quality on large scale problems are better than several outstanding decomposition strategies when the graph-based differential grouping is embedded with cooperative co-evolution framework.

关键词： Optimization Benchmark testing Linear programming Perturbation methods Computer science Sun Context

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A 330–500GHz 4th-harmonic mixer using schottiky diode

A 330–500GHz 4th-harmonic mixer using schottiky diode

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IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz applications (IMWS-AMP)

作者： Quanlong Li Bo Zhang Lisen Zhang Dong Xing Junlong Wang Yong Fan School of Electronic Engineering University of Electronic Science and Technology of China Chengdu Sichuan China National Key Laboratory of Application Specific Integrated Circuits Hebei Semiconductor Research Institute Shijiazhuang China

ISBN: (纸本)9781509020188

The letter presents a fourth-harmonic mixer based on planar schottky diode working at 330-500GHz. The result of simulation predicts that conversion loses well below 14dB from 369GHz to 477GHz with 6 dBm of local oscillator power. Therefore, the good performance of mixers in wide bandwidth and low conversion loss provides designers with a better choice.

关键词： Mixers Schottky diodes Bandwidth Frequency measurement Gallium arsenide Resonant frequency

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Design of a 420GHz Sub-Harmonic Mixer based on planar Schottky diode

Design of a 420GHz Sub-Harmonic Mixer based on planar Schott...

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IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz applications (IMWS-AMP)

作者： Ge Liu Bo Zhang Lisen Zhang Dong Xing Junlong Wang Yong Fan School of Electronic Engineering University of Electronic Science and Technology of China Chengdu Sichuan China National Key Laboratory of Application Specific Integrated Circuits Hebei Semiconductor Research Institute Shijiazhuang China

ISBN: (纸本)9781509020188

In this paper, a 420GHz Sub-Harmonic Mixer based on planar schottky diode is presented. The mixer circuit was fabricated on the 50um thick quartz substrate with a pair of anti-parallel flip-chipped schottky diodes. The planar schottky diode is fabricated in China Electronics Technology Group Corporation-13(CETC-13). Simulated results for the 420 GHz mixer achieved DSB conversion loss of 6.2dB@404GHz. The LO pumped power was 6dBm at 210GHz. The conversion loss was less than 8dB from 390GHz to 450GHz.

关键词： Mixers Indexes Spectroscopy Receivers

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