Temporal variation of noise correlation function （NCF） in Beijing and surroundings： Its relation with climate events and implications

Noise correlation function(NCF) was calculated using the data of the Beijing Capital-Area Telemetered Digital Seismograph Network from June 12 to September 12,2005.Signal-to-noise ratio(SNR) is used to characterize the quality of NCF at each station pair.The SNR(in dB) is shown to be dependent on the separation distance R of the station pair via SNR = A -BlogR.'Normalized average SNR' for all the station pairs can then be calculated,as represented by the value of SNR taking R = 250 km in the empirical SNR-R...     

基于纹理谱的遥感影像纹理分析方法

重点论述了如何运用纹理谱的方法对遥感图像进行纹理分析。通过对不同地物图像进行试验,借助计算机语言实现了各类地物图像的纹理谱特征图的计算显示,并对其进行分析比对,最终达到区分识别各类地物的目的。     

Micro-earthquakes “Just-underneath” Seismic Stations as Ground Truth Events——Application to the 2008 Wenchuan Aftershock Sequence

Analyzing the aftershock sequence of the 2008 Wenchuan earthquake, we considered 26 microearthquakes ＂just underneath＂ seismic stations. Making use of such special station-event configurations to determine the depth of these micro-earthquakes provided accurate relocation of aftershocks with a reference set of ＂ground truth （GT） events＂.     

Intensity Retrieved from Public Monitoring Video——Cases from the May 12,2008,Wenchuan Earthquake

Macroseismic investigation is presented with a new potential means of investigation in the ＂digital age＂. In this paper we studied several cases in the May 12, 2008, Wenchuan Ms8.0 earthquake with a view to exploring the feasibility of retrieving intensity, or even strong ground motion parameters, from public monitoring video which was originally deployed for security purposes. We used public monitoring video records from 44 sites across the meizoseismal region and its surroundings to estimate the intensity. By using the video from a bank in Dujiangyan, Sichuan Province and making the simple assumption that ground vibration is in the form of a propagating harmonic wave, we estimated that the local ground motion acceleration was 0.14g.     

Intensity Retrieved from Public Monitoring Video——Cases from the May 12,2008,Wenchuan Earthquake

Macroseismic investigation is presented with a new potential means of investigation in the "digital age". In this paper we studied several cases in the May 12, 2008, Wenchuan Ms8.0 earthquake with a view to exploring the feasibility of retrieving intensity, or even strong ground motion parameters, from public monitoring video which was originally deployed for security purposes. We used public monitoring video records from 44 sites across the meizoseismal region and its surroundings to estimate the intensity. By using the video from a bank in Dujiangyan, Sichnan Province and making the simple assumption that ground vibration is in the form of a propagating harmonic wave, we estimated that the local ground motion acceleration was 0.14g.     

中国数字地震台网的建设与发展

ldquo;十五rdquo;（2001——2005年）期间,中国地震观测系统得到了迅速的发展,中国地震局完成了ldquo;中国数字地震观测网络rdquo;项目建设,将所有模拟地震观测系统全部进行了数字化改造,并新建了一些数字化地震台站,标志着中国的地震观测已进入数字时代. 本文介绍了新一代国家数字地震台网、区域数字地震台网、火山数字地震台网和流动数字地震台网的规模、布局原则和主要功能.      

山东省周边海域波浪能资源评估

采用第三代海浪模式SWAN对2001-2010年期间山东省周边海域的波浪状况进行了数值模拟。波浪能数值模拟值与台站观测值的比对结果表明模拟值可靠、实用。分析发现山东省周边海域平均波能流密度以2 000W/m以下为主,低于中国南部海域及欧美沿岸波能流密度。选取12个典型代表点,从波能流密度大小、变化特征、稳定性等角度分析了不同代表点的波浪能情况,发现山东周边波能流密度受气候变化影响近10年来呈上升趋势。综合不同区域波浪能大小及需求情况,建议选取山东半岛东部海域、蓬莱外围岛屿近渤海中部海域和渤海中部海域作为波浪能开发利用的首选区域。其中成山头东部海域波能流密度在冬季高达5 000 W/m,在该季节大部分区域可归为一类资源丰富区。基于此,建议开发利用中小规模的波浪能供电设备或供电设施。     

基于数据挖掘分析王旭高治疗痰饮用药规律与诊疗特色

目的：通过数据挖掘分析《王旭高临证医案》“痰饮篇”的处方用药,探寻王旭高治疗痰饮的用药规律。方法：运用SPSS 25.0、SPSS Modeler 18进行频数、性味归经、中药种类、聚类、因子和关联规则分析。结果：通过整理得到处方55首,共使用药物104味,总使用频次597次,高频药物（频次≥11次）共14味,频率从高到低依次为茯苓、半夏、陈皮、白术、甘草、干姜、桂枝、熟地黄、附子、杏仁、五味子、人参、款冬花、泽泻;104味药物按功效分类法收录并分类的共96味,涉及药物种类17种,使用频率最高的药物为补益药与化痰止咳平喘药;性味归经统计结果显示,药味以苦、甘、辛为主,药性多温;归经以肺、脾、肾、胃经为主;关联分析得出常用药对35组;对高频药物进行聚类分析与因子分析,得到3个类方,5个公因子。结论：王旭高辨治痰饮以温化为总则,重视肾脏对痰饮尤其是虚痰的影响,不畏滋腻,助肾纳气,兼以临证化裁,对当今临床仍具参考价值。     

驱动山区农业产业遥感监测的GMG协同系统建设与应用

由于喀斯特山区地貌的支离破碎、地形的高低起伏及气候的多云与雾,难以通过常规遥感手段实现大范围农作物的快速监测,针对该情况,本文研发了内外业一体化的GMG协同系统。该系统利用GPS的精准定位、多媒体的丰富语义及GIS的数据处理优势,多向驱动贵州山区农业产业遥感监测。实践表明,该系统快速实现了省域监测中解译样本的多样性,有效弥补了局部区域内遥感监测的局限性,同时检验了解译数据的准确性。     

城市排水管网连通追踪分析算法研究与功能实现

在对城市排水管网进行形态特征分析的基础上,研究了数据结构中图的遍历算法在管网连通与追踪分析中的应用,并提出了一种反向追踪加标识字段的方案,其有效地解决了复杂网络中连通路径的显示问题,为其他网络追踪路径显示提供了参考。