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Search Results: 1 - 10 of 106096 matches for " Zhi-qiang Liu "
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Research and Application of Code Automatic Generation Algorithm Based on Structured Flowchart  [PDF]
Xiang-Hu Wu, Ming-Cheng Qu, Zhi-Qiang Liu, Jian-Zhong Li
Journal of Software Engineering and Applications (JSEA) , 2011, DOI: 10.4236/jsea.2011.49062
Abstract: It is of great significance to automatically generate code from structured flowchart. There are some deficiencies in existing researches, and their key algorithms and technologies are not elaborated, also there are very few full-featured integrated development platforms that can generate code automatically based on structured flowchart. By analyzing the characteristics of structured flowchart, a structure identification algorithm for structured flowchart is put forward. The correctness of algorithm is verified by enumeration iteration. Then taking the identified flowchart as input, an automatic code generation algorithm is proposed. Also the correctness is verified by enumeration iteration. Finally an integrated development platform is developed using those algorithms, including flowchart modeling, code automatic generation, CDT\GCC\GDB etc. The correctness and effectiveness of algorithms proposed are verified through practical operations.
Causation,Bayesian Networks,and Cognitive Maps

LIU Zhi-Qiang,

自动化学报 , 2001,
Abstract: Causation plays a critical role in many predictive and inference tasks. Bayesian networks (BNs) have been used to construct inference systems for diagnostics and decision making. More recently, fuzzy cognitive maps (FCMs) have gained consid- erable attention and offer an alternative framework for representing structured human knowledge and causal inference. In this paper I briefly introduce Bayesian networks and cognitive networks and their causal inference processes in intelligent systems.
Role of localised surface plasmon polaritons coupling in optical transmission through double-layer metal apertures

Gong Zhi-Qiang,Liu Jian-Qiang,

中国物理 B , 2010,
Abstract: In this paper, we investigate the optical properties of the double-layer metal films perforated with single apertures by analysing the coupling of localized surface plasmon polaritons (LSPPs). It is found that the amplitude and the wavelength of transmission peak in such a structure can be adjusted by changing the longitudinal interval $D$ between two films and the lateral displacements $d_{x}$ and $d_{y}$ which are parallel and perpendicular to the polarization direction of incident light, respectively. The variation of longitudinal interval $D$ results in the redshift of transmission peak due to the change of coupling strength of LSPPs near the single apertures. The amplitude of transmission peak decreases with the increase of $d_{y}$ and is less than that in the case of $d_{x}$, which originates from the difference in coupling manner between LSPPs and the localized natures of LSPPs.
Experimental Investigation of Thermocapillary Convection in a Liquid Layer with Evaporating Interface

ZHU Zhi-Qiang,LIU Qiu-Sheng,

中国物理快报 , 2008,
Abstract: Thermocapillary convection coupling with the evaporation effect of evaporating liquids is studied experimentally. This study focused on an evaporation liquid layer in a rectangular cavity subjected to a horizontal temperature gradient when the top evaporating surface is open to air, while most previous works only studied pure thermocapillary convection without evaporation. Two liquids with different evaporating rates are used to study the coupling of evaporation and thermocapillary convection, and the interfacial temperature profiles for different temperature gradients are measured. The experimental results indicate evidently the influence of evaporation effect on the thermocapillary convection and interfacial temperature profiles. The steady multicellular flow and the oscillatory multicellular flow in the evaporation liquid layer are observed by using the particle-image-velocimetry method.
Non-Markovian and Non-Perturbative Entanglement Dynamics of Biomolecular Excitons

LIU Zhi-Qiang,LIANG Xian-Ting,

中国物理快报 , 2011,
Monocular vision-based vehicle collision warning system

LIU Zhi-qiang,WEN Hua,

计算机应用 , 2007,
Abstract: 基于单目视觉的车辆碰撞预警系统能够发现道路前方的车辆并估算出与前方车辆之间的距离,利用预警机制及时提醒驾驶员危险状况.车道检测和车辆识别是该系统需要解决的两个主要难题,提出了利用边缘分布函数EDF 检测车道标线,利用车辆底部纹理和对称性特征识别车辆,并根据图像坐标系和世界坐标系之间的几何映射关系测距.实验结果表明,提出的方法能够有效检测出车道标线,并能很好地测定与前车的距离.
Analysis on Shielding Performance of Metallic Rectangular Cascaded Enclosure with Apertures
Gang Wu;Xingang Zhang;Zhi-Qiang Song;Bo Liu
PIER Letters , 2011, DOI: 10.2528/PIERL11010902
Abstract: A full-wave approach is proposed to evaluate the shielding performance of metallic rectangular double-stage cascaded enclosures with apertures. The analysis has been carried out by means of the mode-matching technique and the mixed potential integral equation solved with the Method of Moments. The effects of the dimension of enclosures, the orientation of apertures, the polarization direction of the incident wave, the aperture thickness and the high-order modes propagating in enclosures are taken into account. The accuracy of the proposed approach is validated by comparing with other methods and numerical simulation results can derive some conclusions: the shielding performance of cascaded enclosures is better than that of single-stage enclosures, the shielding effectiveness can be improved with increasing the distance between stages in the range, and the shielding performance of the double-stage enclosure with parallel-pattern apertures in horizontal polarization case is better than that in vertical polarization case.
1,3-Dimethyl 5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzene-1,3-dicarboxylate
Long-tao Yi,Zhi-qiang Liu
Acta Crystallographica Section E , 2012, DOI: 10.1107/s1600536811054559
Abstract: The title compound, C16H21BO6, has has approximate C2 symmetry, but no crystallographically imposed molecular symmetry. In the crystal, molecules are packed into parallel columns along the a axis. Short intermolecular C—H...O contacts stabilize the crystal packing.
2,4-Dichloro-6-nitrobenzoic acid
Hai-Lian Liu,Zhi-Qiang Du
Acta Crystallographica Section E , 2008, DOI: 10.1107/s1600536808002560
Abstract: The title compound, C7H3Cl2NO4, was prepared by the reaction of 2,4-dichloro-6-nitrotoluene with 20% HNO3 solution at 430 K. The carboxyl and nitro groups are twisted by 82.82 (12) and 11.9 (2)°, respectively, with respect to the benzene ring. The crystal structure is stabilized by O—H...O hydrogen bonding between carboxyl groups and weak C—H...O hydrogen bonding between the nitro group and the benzene ring of an adjacent molecule.
A Novel Face Recognition Approach Based on Two-Step Test Sample Representation
Zun-xiong Liu,Zhi-qiang Huang,Heng Zhang
Mathematical Problems in Engineering , 2013, DOI: 10.1155/2013/895051
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