人工智能开始走进生活方方面面,并已经开始应用于各行各业。随着深度卷积神经网络的快速发展,深度卷积网络结构的优化、完善,深度卷积神经网络在图像识别、检测领域发挥着重要的作用。目前,给定相机图像来识别手机品牌的相机模式识别在...人工智能开始走进生活方方面面,并已经开始应用于各行各业。随着深度卷积神经网络的快速发展,深度卷积网络结构的优化、完善,深度卷积神经网络在图像识别、检测领域发挥着重要的作用。目前,给定相机图像来识别手机品牌的相机模式识别在图像溯源领域引起了很大的关注。本文首先应用当前流行的深度卷积神经网络(Goog Le Net、Res Net、Dense Net)在多种手机相机模式上进行识别,同时针对三种深度卷积网络在网络结构上、识别效果上进行分析比较,我们的实验结果证明了深度卷积神经网络在相机模式识别上的高效性。展开更多
In this paper,we propose a new relational schema (R-schema) to XML schema translation algorithm, VQT, which analyzes the value cardinality and user query patterns and extracts the implicit referential integrities by u...In this paper,we propose a new relational schema (R-schema) to XML schema translation algorithm, VQT, which analyzes the value cardinality and user query patterns and extracts the implicit referential integrities by using the cardinality property of foreign key constraints between columns and the equi-join characteristic in user queries. The VQT algorithm can apply the extracted implied referential integrity relation information to the R-schema and create an XML schema as the final result. Therefore, the VQT algorithm prevents the R-schema from being incorrectly converted into the XML schema, and it richly and powerfully represents all the information in the R-schema by creating an XML schema as the translation result on behalf of the XML DTD.展开更多
The ice water content(IWC) distribution in a mixed-phase cloud system was investigated using Cloud-Sat data,aircraft measurements,and the Weather Research and Forecasting(WRF) model.Simulated precipitation and IWC wer...The ice water content(IWC) distribution in a mixed-phase cloud system was investigated using Cloud-Sat data,aircraft measurements,and the Weather Research and Forecasting(WRF) model.Simulated precipitation and IWC were in general agreement with rain gauge,sat-ellite,and aircraft observations.The cloud case was char-acterized by a predominant cold layer and high IWC throughout the cloud-development and precipitation stages.The CloudSat-retrieved products suggested that the IWC was distributed from 4.0 to 8.0 km,with the maximum values(up to 0.5 g m-3) at 5.0-6.0 km at the earlymature stage of cloud development.High IWC(up to 0.8 g m-3) was also detected by airborne probes at 4.2 and 3.6 km at the late-mature stage.The WRF model simulation re-vealed that the predominant riming facilitated rapid ac-cumulation of high IWC at 3.0-6.0 km.展开更多
For the purpose of having a better understanding of failure mechanisms of rock fracturing in mines, the equivalent point source models of tensile, shear and explosive seismic events were established, and the relations...For the purpose of having a better understanding of failure mechanisms of rock fracturing in mines, the equivalent point source models of tensile, shear and explosive seismic events were established, and the relationship between far-field seismic displacements of the waves and the corresponding equivalent forces were analyzed as well. Based on the results of a microseismic monitoring carried out in the mining progress of 9202 working face under the upper remnant coal pillar in Sanhejian Mine, the waveform features of the seismic events associated with different failure modes were further analyzed. The results show that the signals corresponding to different failure mechanisms have different radiation patterns of the seismic displacements, and different characteristics in waveform features, such as dominant frequency, energy released, the ratio of S- to P-wave energy, and so on. In addition, the rock burst happened in the high stress zone is mainly the result of the strong shear fracturing in the mining process. The results of this study have significantly improved the understanding of the characteristics of the failures associated with underground mining, and will greatly benefit the prevention and control of rock burst hazards in burst-prone mines.展开更多
文摘人工智能开始走进生活方方面面,并已经开始应用于各行各业。随着深度卷积神经网络的快速发展,深度卷积网络结构的优化、完善,深度卷积神经网络在图像识别、检测领域发挥着重要的作用。目前,给定相机图像来识别手机品牌的相机模式识别在图像溯源领域引起了很大的关注。本文首先应用当前流行的深度卷积神经网络(Goog Le Net、Res Net、Dense Net)在多种手机相机模式上进行识别,同时针对三种深度卷积网络在网络结构上、识别效果上进行分析比较,我们的实验结果证明了深度卷积神经网络在相机模式识别上的高效性。
基金supported by the Chinese National Natural Science Foundation(Nos.10878022,10903022,10903030)the Knowledge Innovation Project of CAS(KJCX2-yW-T13)+1 种基金the State Agency on Science,Innovation and Information of the Ministry for Education and Science of Ukrainethe Russian Foundation of Basic Research~~
基金Project supported by the 2nd Brain Korea Project
文摘In this paper,we propose a new relational schema (R-schema) to XML schema translation algorithm, VQT, which analyzes the value cardinality and user query patterns and extracts the implicit referential integrities by using the cardinality property of foreign key constraints between columns and the equi-join characteristic in user queries. The VQT algorithm can apply the extracted implied referential integrity relation information to the R-schema and create an XML schema as the final result. Therefore, the VQT algorithm prevents the R-schema from being incorrectly converted into the XML schema, and it richly and powerfully represents all the information in the R-schema by creating an XML schema as the translation result on behalf of the XML DTD.
基金supported by the National Basic Research Program of China (973 Program,Grant No.2013CB430105)the Knowledge Innovation Program of the Chinese Academy of Sciences (Grant No.KZCX2-EW-203)the National Natural Science Foundation of China (Grant No.41105095)
文摘The ice water content(IWC) distribution in a mixed-phase cloud system was investigated using Cloud-Sat data,aircraft measurements,and the Weather Research and Forecasting(WRF) model.Simulated precipitation and IWC were in general agreement with rain gauge,sat-ellite,and aircraft observations.The cloud case was char-acterized by a predominant cold layer and high IWC throughout the cloud-development and precipitation stages.The CloudSat-retrieved products suggested that the IWC was distributed from 4.0 to 8.0 km,with the maximum values(up to 0.5 g m-3) at 5.0-6.0 km at the earlymature stage of cloud development.High IWC(up to 0.8 g m-3) was also detected by airborne probes at 4.2 and 3.6 km at the late-mature stage.The WRF model simulation re-vealed that the predominant riming facilitated rapid ac-cumulation of high IWC at 3.0-6.0 km.
基金Projects 50474068 supported by the National Natural Science Foundation of China2005CB221504 by the National Basic Research Program of China+2 种基金2006BAK04B02 and 2006BAK04B06 by the National Eleventh Five-Year Key Science & Technology Project[2007]3020 by the State Scholarship Fund of China Scholarship Councilprovided by the National Basic Research Program of China (2005CB221501)
文摘For the purpose of having a better understanding of failure mechanisms of rock fracturing in mines, the equivalent point source models of tensile, shear and explosive seismic events were established, and the relationship between far-field seismic displacements of the waves and the corresponding equivalent forces were analyzed as well. Based on the results of a microseismic monitoring carried out in the mining progress of 9202 working face under the upper remnant coal pillar in Sanhejian Mine, the waveform features of the seismic events associated with different failure modes were further analyzed. The results show that the signals corresponding to different failure mechanisms have different radiation patterns of the seismic displacements, and different characteristics in waveform features, such as dominant frequency, energy released, the ratio of S- to P-wave energy, and so on. In addition, the rock burst happened in the high stress zone is mainly the result of the strong shear fracturing in the mining process. The results of this study have significantly improved the understanding of the characteristics of the failures associated with underground mining, and will greatly benefit the prevention and control of rock burst hazards in burst-prone mines.
