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| 1 | Anomaly Detection of User Behavior Based on Shell Commands and Homogeneous Markov Chains显示文摘 | TIAN Xinguang DUAN Miyi LI Wenfa SUN Chunlai | 2008 | Chinese Journal of Electronics2008，17，2： | 12 |
| 2 | Intrusion detection based on system calls and homogeneous Markov chains显示文摘A novel method for detecting anomalous program behavior is presented, which is applicable to host-based intrusion detection systems that monitor system call activities. The method constructs a homogeneous Markov chain model to characterize the normal behavior of a privileged program, and associates the states of the Markov chain with the unique system calls in the training data. At the detection stage, the probabilities that the Markov chain model supports the system call sequences generated by the program are computed. A low probability indicates an anomalous sequence that may result from intrusive activities. Then a decision rule based on the number of anomalous sequences in a locality frame is adopted to classify the program's behavior. The method gives attention to both computational effciency and detection accuracy, and is especially suitable for on-line detection. It has been applied to practical host-based intrusion detection systems. | Tian Xinguang Duan Miyi Sun Chunlai Li Wenfa | 2008 | Journal of Systems Engineering and Electronics2008，19，3： | 8 |
| 3 | IMPROVING THE FREQUENCY RESOLUTION OF DIGITALLY SYNTHESIZED PERIODIC SIGNALS BY A SEQUENTIAL ADDRESSING SCHEME显示文摘In the digital synthesis of wideband periodic signals using an Arbitrary Waveform Gen-erator(AWG),the frequency resolution and spectral complexity of the synthesized signals are com-monly limited by the memory capacity and clock frequency of the AWG.This paper proposes a novel sequential addressing scheme and then presents several sequences to improve the frequency resolution of the synthesized periodic signals without changing their spectral envelopes and basic time-domain characteristics under the condition of a fixed memory capacity and a fixed clock fre-quency.The main idea of the scheme is using the address generator in an AWG to program and produce addresses to read fixed waveform data in variable order,and thus to generate waveforms of various periods and profiles.The scheme is applied in simulating signal scenarios for military com-munication countermeasure experiments,and achieves high performance. | Tian Xinguang Duan Miyi Sun Chunlai Chen Hong | 2008 | Journal of Electronics(China)2008，25，5： | 2 |
| 4 | Detecting network intrusions by data mining and variable-length sequence pattern matching显示文摘Anomaly detection has been an active research topic in the field of network intrusion detection for many years. A novel method is presented for anomaly detection based on system calls into the kernels of Unix or Linux systems. The method uses the data mining technique to model the normal behavior of a privileged program and uses a variable-length pattern matching algorithm to perform the comparison of the current behavior and historic normal behavior, which is more suitable for this problem than the fixed-length pattern matching algorithm proposed by Forrest et al. At the detection stage, the particularity of the audit data is taken into account, and two alternative schemes could be used to distinguish between normalities and intrusions. The method gives attention to both computational efficiency and detection accuracy and is especially applicable for on-line detection. The performance of the method is evaluated using the typical testing data set, and the results show that it is significantly better than the anomaly detection method based on hidden Markov models proposed by Yan et al. and the method based on fixed-length patterns proposed by Forrest and Hofmeyr. The novel method has been applied to practical hosted-based intrusion detection systems and achieved high detection performance. | Tian Xinguang Duan Miyi Sun Chunlai Liu Xin | 2009 | Journal of Systems Engineering and Electronics2009，20，2： | 2 |
| 5 | Network intrusion detection based on system calls and data mining 显示文摘 | Tian Xinguang Cheng Xueqi Duan Miyi | 2010 | Frontiers of Computer Science in China2010，4，4： | 1 |
| 6 | Activity coefficients at infinite dilution of alkanes, alkenes, and alkyl benzenes in 1-butyl-3-methylimidazolium trifluoromethanesulfonate using gas-liquid chromatography 显示文摘 | Ge Minglan Wang Lisheng Li Miyi | 2007 | J Chem Eng Data2007，52，6： | 1 |
| 7 | A Rule-based Approach for the Conflation of Attributed Vector Data显示文摘 | Maria A. Cobb Miyi J. Chung Harold Foley III Frederick E. Petry Kevin B. Shaw H. Vincent Miller | 1998 | GeoInformatica1998，，1： | 1 |
| 8 | AN ITERATIVE ALGORITHM FOR OPTIMAL DESIGN OF NON-FREQUENCY-SELECTIVE FIR DIGITAL FILTERS显示文摘This paper proposes a novel iterative algorithm for optimal design of non-frequency-selective Finite Impulse Response(FIR) digital filters based on the windowing method.Different from the traditional optimization concept of adjusting the window or the filter order in the windowing design of an FIR digital filter,the key idea of the algorithm is minimizing the approximation error by succes-sively modifying the design result through an iterative procedure under the condition of a fixed window length.In the iterative procedure,the known deviation of the designed frequency response in each iteration from the ideal frequency response is used as a reference for the next iteration.Because the approximation error can be specified variably,the algorithm is applicable for the design of FIR digital filters with different technical requirements in the frequency domain.A design example is employed to illustrate the efficiency of the algorithm. | Tian Xinguang Duan Miyi Sun Chunlai Liu Xin | 2008 | Journal of Electronics(China)2008，25，5： | 1 |
| 9 | Magnetic retrieval of ionic liquids: Fast dispersive liquid–liquid microextraction for the determination of benzoylurea insecticides in environmental water samples显示文摘 | Jiaheng Zhang Min Li Miyi Yang Bing Peng Yubo Li Wenfeng Zhou Haixiang Gao Runhua Lu | 2012 | Journal of Chromatography A2012，，： | 1 |
| 10 | Is benign prostatic hyperplasia (BPH) an immune inflammatory disease? 显示文摘 | KRAMER G MIYI'EREGGER D MARBERGER M | 2007 | European Urology2007，51，5： | 1 |
| 11 | Generalized LIQUAC model for the single- and mixed-solvent strong electrolyte systems 显示文摘 | Li Miyi Wang Lisheng Jiang Bo Gmehling J | 2011 | AIChE Journal2011，57，9： | 1 |
| 12 | Thermodynamics of phase equilibria in aqueous strong electrolyte systems 显示文摘 | Li Miyi Wang Lisheng Gmehling J | 2011 | Industrial & Engineering Chemistry Research2011，50，6： | 1 |
| 13 | Amine-functionalized hierarchically porous carbon supported Pd nanocatalysts for highly efficient H2 generation from formic acid with fast-diffusion channels显示文摘Formic acid(FA)has come to be considered a potential candidate for hydrogen storage,and the development of efficient catalysts for H2releasing is crucial for realizing the sustainable process from FA.Herein,we have developed the ultrafine Pd nanoparticle(NPs)with amine-functionalized carbon as a support,which was found to show an excellent catalytic activity in H_(2)generation from FA dehydrogenation.The synergetic mechanism between amine-group and Pd active site was demonstrated to facilitate H2generation byβ-hydride elimination.Moreover,the texture of support for Pd NPs also plays an important role in determining the reactivity of FA,since the diffusion of gaseous products makes the kinetics of diffusion as a challenge in this high performance Pd catalysts.As a result,the as-prepared Pd/NH_(2)-TPC catalyst with the small sized Pd nanoparticles and the hierarchically porous structures shows a turnover of frequency(TOF)value of 4312 h^(-1)for the additive-free FA dehydrogenation at room temperature,which is comparable to the most promising heterogeneous catalysts.Our results demonstrated that the intrinsic catalytic activities of active site as well as the porous structure of support are both important factors in determining catalytic performances in H2generation from FA dehydrogenation,which is also helpful to develop high-activity catalysts for other advanced gas-liquid-solid reactions systems. | Xianzhao Shao Xinyi Miao Fengwu Tian Miaomiao Bai Xiaosha Guo Wei Wang Zuoping Zhao Xiaohui Ji Miyi Li Fangan Deng | 2023 | Journal of Energy Chemistry2023，，1： | 0 |
| 14 | 四川省米易县立体农业综合实验基地研究报告显示文摘报告对米易立体农业综合实验基地六年来的研究过程和成果进行了全面的记述。提出了立体农业研究、试验、示范的主要背景依据、理论基础、组织形式与试验方法。为全省农业如何实现集约经营、综合开发、商品生产、持续发展探索了一条有效的途径。 | ( Sichuan Leading Group of Vertical Agricultural Experiment, The Committee of C.C.P.and Govcrment in Miyi County) | 1990 | 西南农业学报1990，3，1： | 0 |
| 15 | A graph theory model using human nature structure显示文摘A graph theory model of the human nature structure( GMH) for machine vision and image/graphics processing is described in this paper. Independent from the motion and deformation of contours,the human nature structure( HNS) embodies the most basic movement characteristics of the body. The human body can be divided into basic units like head,torso,and limbs. Using these basic units,a graph theory model for the HNS can be constructed. GMH provides a basic model for human posture processing,and the outline in the perspective projection plane is the body contour of an image. In addition,the GMH can be applied to articulated motion and deformable objects,e. g.,in the design and analysis of body posture,by modifying mapping parameters of the GMH. | 刘佳 Hu Haimiao Duan Miyi Li Wenfa Yuan Jiazheng | 2017 | High Technology Letters2017，23，4： | 0 |
| 16 | DDFS spurious signals due to amplitude quantization in absence of phase-accumulator truncation显示文摘Spurious signals in direct digital frequency synthesizers(DDFSs)are partly caused by amplitude quantization and phase truncation,which affect their application to many wireless telecommunication systems. These signals are deterministic and periodic in the time domain,so they appear as line spectra in the frequency domain.Two types of spurious signals due to amplitude quantization are exactly formulated and compared in the time and frequency domains respectively.Then the frequency spectra and power levels of the spurious signals due to amplitude quantization in the absence of phase-accumulator truncation are emphatically analyzed,and the effects of the DDFS parameter variations on the spurious signals are thoroughly studied by computer simulation.And several important conclusions are derived which can provide theoretical support for parameter choice and spurious performance evaluation in the application of DDFSs. | Tian Xinguang Liu Xin Chen Hong Duan Miyi | 2009 | Journal of Systems Engineering and Electronics2009，20，3： | 0 |
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