标签树对微软提出的VIPS进行改进,提出一种改进算法CTVPS,最后通过实验证明了本文算法的正确性和性能优越性。| 高乐 张健 田贤忠 | 2009 | 计算机系统应用2009，18，4： | 11 | | 4 | Structural modal parameter identifi cation and damage diagnosis based on Hilbert-Huang transform显示文摘Traditional modal parameter identifi cation methods have many disadvantages,especially when used for processing nonlinear and non-stationary signals.In addition,they are usually not able to accurately identify the damping ratio and damage.In this study,methods based on the Hilbert-Huang transform(HHT) are investigated for structural modal parameter identifi cation and damage diagnosis.First,mirror extension and prediction via a radial basis function(RBF) neural network are used to restrain the troublesome end-effect issue in empirical mode decomposition(EMD),which is a crucial part of HHT.Then,the approaches based on HHT combined with other techniques,such as the random decrement technique(RDT),natural excitation technique(NExT) and stochastic subspace identifi cation(SSI),are proposed to identify modal parameters of structures.Furthermore,a damage diagnosis method based on the HHT is also proposed.Time-varying instantaneous frequency and instantaneous energy are used to identify the damage evolution of the structure.The relative amplitude of the Hilbert marginal spectrum is used to identify the damage location of the structure.Finally,acceleration records at gauge points from shaking table testing of a 12-story reinforced concrete frame model are taken to validate the proposed approaches.The results show that the proposed approaches based on HHT for modal parameter identifi cation and damage diagnosis are reliable and practical. | Han Jianping Zheng Peijuan Wang Hongtao | 2014 | Earthquake Engineering and Engineering Vibration2014，13，1： | 11 |
| 5 | Performance of sand and shredded rubber tire mixture as a natural base isolator for earthquake protection显示文摘The performance of a well-designed layer of sand, and composites like layer of sand mixed with shredded rubber tire(RSM) as low cost base isolators, is studied in shake table tests in the laboratory. The building foundation is modeled by a 200 mm by 200 mm and 40 mm thick rigid plexi-glass block. The block is placed in the middle of a 1m by 1m tank filled with sand. The selected base isolator is placed between the block and the sand foundation. Accelerometers are placed on top of the footing and foundation sand layer. The displacement of the footing is also measured by LVDT. The whole setup is mounted on a shake table and subjected to sinusoidal motions with varying amplitude and frequency. Sand is found to be effective only at very high amplitude(> 0.65 g) of motions. The performance of a composite consisting of sand and 50% shredded rubber tire placed under the footing is found to be most promising as a low-cost effective base isolator. | Srijit Bandyopadhyay Aniruddha Sengupta G.R.Reddy | 2015 | Earthquake Engineering and Engineering Vibration2015，14，4： | 10 |
| 6 | Seepage laws in aquifer near a partially penetrating river with an intensive extraction of ground water显示文摘The intensive extraction of ground water from aquifers near a river is an efficient way to exploit ground water resources. A lot of problems, however, have arisen because the mechanism of ground water flow in this way has not been clear. A sand-box model and a numerical model are respectively used to simulate the extraction of ground water near a partially penetrating river physically and theoretically. The results show that the ground water will lose saturated hydraulic connection with the river water as the pumping intensity increases. The broken point of hydraulic connection is located in the interior of aquifers rather than on the riverbed. After hydraulic disconnection occurs, two saturated zones, a suspended saturated zone linked with river and an unconfined aquifer, are formed. | 刘国东 李俊亭 | 1997 | Science China(Technological Sciences)1997，40，5： | 9 |
| 7 | Characteristics and dynamics analysis of Populus euphratica populations in the middle reaches of Tarim River显示文摘Populus euphratica Oliv. is widely distributed along the Tarim River. Maintaining stability of P. euphratica population is important to local development. This study explored the static life table, survivorship curves and four function curves (survival rate, cumulative mortality rate, mortality density, and hazard rate), and development index of P. euphratica population in the middle reaches of Tarim River. The results indicated that the age structure of P. euphratica population belonged to positive pyramidal type, which meant young age-class individuals occupied most populations. The number ofⅠ-Ⅱage classes accounted for 66.2% of whole population, and this indicated that there were abundant subsequent seedlings resources to support the growth of P. euphratica population in the middle reaches of Tarim River. The survivorship curve of P. euphratica belonged to the Deevey Ⅲ (concave-type) and the development index was 47.72%. Four function curves revealed that the individuals of P. euphratica sharply decreased at the initial stage and then leveled off at the late stage of survival curve. Time sequence prediction models predicted that the number of midlife individuals would increase in future 10, 20, 30 years, and P. euphratica population grew steadily as a result of rich saplings. | Wu, JunXia Zhang, XiMing Deng, ChaoZhou Liu, GuoJun Li, Hong | 2010 | Journal of Arid Land2010，2，4： | 9 |
| 8 | Experimental Study on Free Spanning Submarine Pipeline Under Dynamic Excitation显示文摘Seismic load has a significant effect on the response of a free spanning submarine pipeline when the pipeline is constructed in a seismically active region. The model experiment is performed on an underwater shaking table to simulate the response of submarine pipelines under dynamic input. In consideration of the effects of the terrestrial and submarine pipeline, water depth, support condition, distance from seabed, empty and full pipeline, and span on dynamic response, 120 groups of experiments are conducted. Affecting factors are analyzed and conclnsions are drawn for reference. For the control of dynamic response, the span of a submarine pipeline is by far more important than the other factors. Meanwhile, the rosponse difference between a submarine pipeline under sine excitation and that under random excitation exists in experiments. | 李昕 刘亚坤 周晶 马恒春 朱彤 | 2002 | China Ocean Engineering2002，17，4： | 9 |
| 9 | Dynamic response of a slope reinforced by double-row antisliding piles and pre-stressed anchor cables显示文摘Large-scale shaking table tests were conducted to study the dynamic response of a slope reinforced by double-row anti-sliding piles and prestressed anchor cables. The test results show that the reinforcement suppressed the acceleration amplification effectively. The axial force time histories are decomposed into a baseline part and a vibration part in this study. The baseline part of axial force well revealed the seismic slope stability, the peak vibration values of axial force of the anchor cables changed significantly in different area of the slope under seismic excitations. The peak lateral earth pressure acting on the back of the anti-sliding pile located at the slope toe was much larger than that acting on the back of the anti-sliding pile located at the slope waist. The test results indicate an obvious load sharing ratio difference between these two anti-slide piles, the load sharing ratio between the two anti-sliding piles located at the slope toe and the slope waist varied mainly in a range of 2-5. The anti-slide pile at the slope waist suppressed the horizontal displacement of the slope surface. | FAN Gang ZHANG Jian-jing QI Shun-chao WU Jin-biao | 2019 | Journal of Mountain Science2019，16，1： | 8 |
| 10 | 基于Matlab模糊控制器HDL代码的自动生成显示文摘以水箱液位控制为例,提出了一种基于Matlab的模糊控制器HDL代码自动生成方法,生成的代码可以移植到FPGA控制系统上。该方法分4个步骤:(1)利用Matlab的Fuzzy Logic工具箱设计模糊控制器。(2)将模糊控制器转换为Lookup Table的形式。(3)将制作好的控制器查找表用状态机实现。(4)用HDL Coder将状态机实现的模糊控制器翻译成HDL代码。 | 诸葛俊贵 | 2012 | 电子科技2012，25，1： | 8 |
| 11 | Shaking table experimental study of recycled concrete frame-shear wall structures显示文摘In this study, four 1/5 scaled shaking table tests were conducted to investigate the seismic performance of recycled concrete frame-shear wall structures with different recycled aggregates replacement rates and concealed bracing detail. The four tested structures included one normal concrete model, one recycled coarse aggregate concrete model, and two recycled coarse and fi ne aggregate concrete models with or without concealed bracings inside the shear walls. The dynamic characteristics, dynamic response and failure mode of each model were compared and analyzed. Finite element models were also developed and nonlinear time-history response analysis was conducted. The test and analysis results show that the seismic performance of the recycled coarse aggregate concrete frame-shear wall structure is slightly worse than the normal concrete structure. The seismic resistance capacity of the recycled concrete frame-shear wall structure can be greatly improved by setting up concealed bracings inside the walls. With appropriate design, the recycled coarse aggregate concrete frame-shear wall structure and recycled concrete structure with concealed bracings inside the walls can be applied in buildings. | Zhang Jianwei Cao Wanlin Meng Shaobin Yu Cheng Dong Hongying | 2014 | Earthquake Engineering and Engineering Vibration2014，13，2： | 8 |
| 12 | Temporal and spatial dynamical simulation of groundwater characteristics in Minqin Oasis显示文摘Application scope of geostatistics has been gradually extended from original geologic field to soil science and ecological field, etc. and its successful application results have been widely demonstrated. But little information is reported as to the direct use of geostatistical method to work out the distribu- tion map of groundwater characteristics. In this paper the semivariogram of geostatistics, in combina- tion with GIS, was used to quantitatively study the spatial variation characteristics of groundwater table depth and mineralization degree and their relation to the landuse changes. F test of the used spherical model reached a very significant level, and the theoretical model can well reflect the spatial structural characteristics of groundwater table depth and mineralization degree and achieve an ideal result. This shows that the application of the method in the dynamical simulation of groundwater is feasible. And this paper also provides useful reference for the application of geostatistics in the study of the dy- namical variations of groundwater resources in the oasis. | XIAO DuNing LI XiaoYu SONG DongMei YANG GuoJing | 2007 | Science China Earth Sciences2007，50，2： | 7 |
| 13 | 基于台达运动控制型PLC电子凸轮功能的高速绕线机显示文摘介绍台达DVP-20PM00D运动控制器电子凸轮(CAM)功能,阐述高速绕线机工作原理、工艺要求及相关控制程序概要。 | 赵越锦 | 2008 | 伺服控制2008，0，10： | 6 |
| 14 | 云南地方香稻与非香稻遗传多样性比较(英文)显示文摘1材料与方法
1.1材料 供试水稻种子全部来自于云南省农业科学院种质资源保存库,是否为香稻品种均依据保存目录的性状记载、并采用咀嚼法对其进行再次验证。其中香稻10份,非香稻45份(表见第57页Table 1:品种及其来源)。供试所有香稻和非香稻品种均具有不同的云南省种质资源保存库编号。特别是10份香稻品种,来自于云南的5个相距较远的地方,在云南栽培香稻中具有一定代表性。 | 白现广 程在全 蔺忠龙 吕广磊 黄兴奇 | 2009 | Agricultural Science & Technology2009，10，1： | 6 |
| 15 | 基于云计算的数据管理技术研究显示文摘从云计算和互联网发展关系的角度出发,借鉴传统数据管理技术的理念和优势,以实现研究、设计和开发新的基于云计算的数据管理技术的目的。通过对云计算的服务器虚拟技术、数据分布存储技术、海量数据管理技术和分布式并行编程模型4个关键技术的剖析,结合云计算对数据管理的特殊需求,详细阐述了GFS、Map Reduce和Big Table3种数据管理技术的功能、特点和管理数据的过程。证明云计算数据管理技术基础理论建设与完善是传统数据管理技术向云计算管理方式的改造与迁移。 | 盖玉莲 | 2015 | 电子设计工程2015，23，6： | 6 |
| 16 | Shaking table test and numerical simulation of an isolated cylindrical latticed shell under multiple-support excitations显示文摘In order to study the infl uence of the ground motion spatial eff ect on the seismic response of large span spatial structures with isolation bearings, a single-layer cylindrical latticed shell scale model with a similarity ratio of 1/10 was constructed. An earthquake simulation shaking table test on the response under multiple-support excitations was performed with the high-position seismic isolation method using high damping rubber (HDR) bearings. Small-amplitude sinusoidal waves and seismic wave records with various spectral characteristics were applied to the model. The dynamic characteristics of the model and the seismic isolation eff ect on it were analyzed at varying apparent wave velocities, namely infi nitely great, 1000 m/s, 500 m/s and 250 m/s. Besides, numerical simulations were carried out by Matlab software. According to the comparison results, the numerical results agreed well with the experimental data. Moreover, the results showed that the latticed shell roof exhibited a translational motion as a rigid body after the installation of the HDR bearings with a much lower natural frequency, higher damping ratio and only 1/2~1/8 of the acceleration response peak values. Meanwhile, the structural responses and the bearing deformations at the output end of the seismic waves were greatly increased under multiple-support excitations. | Xue Suduo Shan Mingyue Li Xiongyan Liang Shuanzhu Huang Fuyun Liu Yi | 2019 | Earthquake Engineering and Engineering Vibration2019，18，3： | 5 |
| 17 | Groundwater regime and calculation of yield response in North China Plain: a case study of Luancheng County in Hebei Province显示文摘The groundwater table has been declining at a rate of 0.65 m/yr in Luancheng County since large scale groundwater extraction carried out in the 1960s. The drop of precipitation, substantial increase in agricultural output, variations of crop planting structure and construction of water conservancy projects in the headwater area all tie up with the decline of the groundwater table. On the basis of analyzing the hydrogeological conditions and the water resources utilization of Luancheng County, a three-dimensional groundwater flow model was developed to simulate the county抯 groundwater flow through finite-difference method using Visual Modflow software. We divide the research field into four parts after analyzing the hydrogeological condition. Based on parameter calibration and adjustment using measured data, the hydraulic conductivity and specific yield were simulated. Using the calibrated model, we analyze the agricultural water saving potentiality and its influence on the groundwater. The results are as follows: (1) if we decrease the amount of water extracted by 0.14×108 m3, the average groundwater table of the five observation wells in December will rise by 0.33 m; (2) if we decrease the water by 0.29×108 m3, the average groundwater table of the five observation wells in December will rise by 0.64 m; and (3) if we increase the water by 0.29×108 m3, the average groundwater table of the five observation wells in December will decline by 0.45 m. So we can draw a conclusion that controlling the agricultural water use is an important way to prevent the decline of groundwater table. | Jia Jin-sheng Yu Jing-jie Liu Chang-ming | 2002 | Journal of Geographical Sciences2002，12，2： | 5 |
| 18 | 广东日用陶瓷产业现状分析显示文摘本文通过对广东日用陶瓷产业现状调研和存在问题进行分析,提出促进日用陶瓷产业发展的对策和建议。 | 邱伟志 | 2010 | 佛山陶瓷2010，20，7： | 5 |
| 19 | TMS320C6000系列DSPs外接FLASH引导方式的实现显示文摘通过FLASH来引导DSP系统是实际应用中常用的一种方式 ,但不同系列DSPs的引导方式又不尽相同。本文介绍了TI公司C6 0 0 0系列DSPs通过外接FLASH进行引导的原理和两种实现方法 ,并对这两种方法的特点进行了分析和比较。 | 李鹏 郑喜凤 丁铁夫 | 2004 | 长春理工大学学报(自然科学版)2004，27，4： | 5 |
| 20 | Vertical profile of aerosol extinction based on the measurement of O4 of multi-elevation angles with MAX-DOAS显示文摘A method for aerosol extinction profile retrieval using ground-based multi-axis differential optical absorption spectroscopy(MAX-DOAS)is studied,which is based on a look-up table algorithm.The algorithm uses parametric method to represent aerosol extinction profiles and simulate different atmospheric aerosol states through atmospheric radiation transfer model.Based on the method,aerosol extinction profile was obtained during six cloud-free days.The O4 differential air mass factor(dAMF)measured by MAX-DOAS is compared with the corresponding model results under different atmospheric conditions(R^2=0.78).The aerosol optical thickness,aerosol weight factor in boundary layer,and the height of the boundary layer are obtained after the process of minimization and look-up table method.The retrieved aerosol extinction in boundary layer is compared with PM2.5 data measured by ground point instrument.The diurnal variation trends of the two methods are in good agreement.The correlation coefficients of the two methods are 0.71 when the aerosol optical thickness is smaller than 0.5.The results show that the look-up table method can obtain the aerosol state of the troposphere and provide validation for other instrument data. | 牟福生 雒静 李素文 单巍 胡丽莎 | 2019 | Chinese Physics B2019，28，8： | 4 |
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