Investigations into the Andean orocline revealed a counterclockwise rotation of about 37° in the north and a clockwise rotation of about 29° in the south. This rotation would have started in the Eocene becau...Investigations into the Andean orocline revealed a counterclockwise rotation of about 37° in the north and a clockwise rotation of about 29° in the south. This rotation would have started in the Eocene because the Nazca and South American plates converged. The transition zone between the Puna and the Sierras Pampeanas has a clockwise rotation pattern. Our new data show that the NE convergence of the Nazca and South American plates caused the counterclockwise rotation around the NW end of the Sierras Pampeanas. The temperature rise during a magmatic activity at 13 Ma would have favored a counterclockwise rotation of the mountain blocks of about 20° on a detachment zone within 10 to 15 km of depth. These range rotations generated local stress tensors trending NE and NW, facilitating the development of valleys, basins, mineralized dikes, mineral deposits, and alluvial fans separated from their origin. The Atajo fault shows both ductile and brittle characteristics. A mylonitic belt from the Sierra de Aconquija was juxtaposed on the rocks of the Ovejería Block and the Farallón Negro Volcanic Complex by reverse vertical displacement, and a dextral horizontal component of displacement resulted in curvatures that gave rise to pull-apart basins and step over features. The Santa Maria Valley, Campo del Arenal, Hualfín Valley, and Pipanaco salt flat most likely constituted a vast early Miocene basin rarely interrupted by low feature relief.展开更多
A paleomagnetic study of about 95 samples from 16 sites sampled in the Early Cretaceous in Luanping basin in Hebei Province was reported. Stepwise thermal demagnetization was used to isolate magnetic components. Most ...A paleomagnetic study of about 95 samples from 16 sites sampled in the Early Cretaceous in Luanping basin in Hebei Province was reported. Stepwise thermal demagnetization was used to isolate magnetic components. Most samples have a characteristic direction with a high temperature component above 500℃. The tectonic\|corrected data are D =347 8°, I =50 4°, α 95 =7.1°, and the corresponding pole position is at 76.1°N, 346.3°E, with dp =6.4°, dm =3 8°,paleolatitude λ =31.1°N. This result indicates a counterclockwise post\|Cretaceous rotation of 30.7°±9.8° with respect to the stable Ordos basin in the west of North China Block, and a non\|significant northward motion. This rotation could be related to local fault action or structural detachment, or regional NNW\|NWWward motion and collision of Kula\|Pacific plate with eastern China since the Early Cretaceous.展开更多
Extensive paleomagnetic studies in the Yangtze Block of South China has been performed since the 1980s, and the Phanerozoic APW (apparent polar wander)path has been established based on a large amount of data obtained...Extensive paleomagnetic studies in the Yangtze Block of South China has been performed since the 1980s, and the Phanerozoic APW (apparent polar wander)path has been established based on a large amount of data obtained. However, the Huanan Block in southeastern region still remains unknown paleomagnetically. In order to further understand the plate tectonic patterns and evolutional history prio Mesozoic collision of the展开更多
This is the final article in our series dealing with the interplay of spin and gravity that leads to the generation, and continuation of celestial body motions in the universe. In our prior studies we focused on such ...This is the final article in our series dealing with the interplay of spin and gravity that leads to the generation, and continuation of celestial body motions in the universe. In our prior studies we focused on such interactions in the elementary particles, and in the celestial bodies in the solar system. Foremost among the findings was that, along with gravity, matter at all levels exhibits axial spin. We further noted that all freestanding bodies outside our solar system, including the largest such units, the stars and galaxies also spin on their axes. Also, the axial rotation speed of planets in our solar system has a linear positive relationship to their masses, thus hinting at its fundamental and autonomous nature. We have reported that this relationship between the size of the body and its axial rotation speed extends to the stars and even the galaxies. Next, all congregations of matter spin on their axes in the counterclockwise direction;all satellites orbit their mother bodies also in the counterclockwise direction, <i>i.e.</i>: in our solar system, with only rare exceptions, the satellite bodies follow the mother bodies’ axial rotation. This relationship exists also in the case of the rings of planets, the asteroids and the Kuiper belt bodies, as well as the stars and their galaxies. We also noted the intricate involvements between spin and gravity in the exquisite phenomena of synchronous and negative rotations of planets and some satellites;we have explained in detail how these two phenomena occur. The closest large moons of the gas and ice giants and the earth’s moon exhibit synchronous rotation. In this paper we present evidence that these synchronously rotating satellite bodies’ <b>axial rotation speed</b> is closely related to the size and the axial rotation speeds of their respective mother bodies. In the satellites that follow a non-synchronous rotation (most of the planets and their satellites) the satellites’ own rotation speed usually dominates. In all these rotational/orbital motions展开更多
在步态识别中,最关键的是获取步态特征之后如何选择最佳投影方向,且计算复杂度较小.因此,根据对现有算法的分析,提出一种基于轮廓特征的的广义步态识别算法.在传统的线性判别分析方法基础上,通过重新定义样本类间离散矩阵寻找最佳投影方...在步态识别中,最关键的是获取步态特征之后如何选择最佳投影方向,且计算复杂度较小.因此,根据对现有算法的分析,提出一种基于轮廓特征的的广义步态识别算法.在传统的线性判别分析方法基础上,通过重新定义样本类间离散矩阵寻找最佳投影方向,使不同的目标映射到同一低维空间中,在保留同类结构信息的同时最大化不同类的间距.首先对每个序列进行运动轮廓提取,根据轮廓解卷绕方法将二维轮廓形状转换为一维距离信号,并通过广义线性判别分析方法(Generalized Linear Discriminative Analysis,GLDA)得到最佳投影空间,最终利用支持向量机(Support Vector M achine,SVM)完成分类识别.实验结果表明,该算法简单有效,具有更高的识别率,并且计算代价及处理速度明显优于其他现有算法.展开更多
The projection process along a simple closed smooth curve of a nonexplosive diffusion process on a cornplete Riemannian manifold is defined in probabilistic way. The winding numbers of the pmjection process are clockw...The projection process along a simple closed smooth curve of a nonexplosive diffusion process on a cornplete Riemannian manifold is defined in probabilistic way. The winding numbers of the pmjection process are clockwise and counterclockwise given. The symmetry of the diffusion process is shown to be equivalent to that for any closed smooth curve. the long time average winding numbers of the projection process in two different directions are equal.展开更多
文摘Investigations into the Andean orocline revealed a counterclockwise rotation of about 37° in the north and a clockwise rotation of about 29° in the south. This rotation would have started in the Eocene because the Nazca and South American plates converged. The transition zone between the Puna and the Sierras Pampeanas has a clockwise rotation pattern. Our new data show that the NE convergence of the Nazca and South American plates caused the counterclockwise rotation around the NW end of the Sierras Pampeanas. The temperature rise during a magmatic activity at 13 Ma would have favored a counterclockwise rotation of the mountain blocks of about 20° on a detachment zone within 10 to 15 km of depth. These range rotations generated local stress tensors trending NE and NW, facilitating the development of valleys, basins, mineralized dikes, mineral deposits, and alluvial fans separated from their origin. The Atajo fault shows both ductile and brittle characteristics. A mylonitic belt from the Sierra de Aconquija was juxtaposed on the rocks of the Ovejería Block and the Farallón Negro Volcanic Complex by reverse vertical displacement, and a dextral horizontal component of displacement resulted in curvatures that gave rise to pull-apart basins and step over features. The Santa Maria Valley, Campo del Arenal, Hualfín Valley, and Pipanaco salt flat most likely constituted a vast early Miocene basin rarely interrupted by low feature relief.
文摘A paleomagnetic study of about 95 samples from 16 sites sampled in the Early Cretaceous in Luanping basin in Hebei Province was reported. Stepwise thermal demagnetization was used to isolate magnetic components. Most samples have a characteristic direction with a high temperature component above 500℃. The tectonic\|corrected data are D =347 8°, I =50 4°, α 95 =7.1°, and the corresponding pole position is at 76.1°N, 346.3°E, with dp =6.4°, dm =3 8°,paleolatitude λ =31.1°N. This result indicates a counterclockwise post\|Cretaceous rotation of 30.7°±9.8° with respect to the stable Ordos basin in the west of North China Block, and a non\|significant northward motion. This rotation could be related to local fault action or structural detachment, or regional NNW\|NWWward motion and collision of Kula\|Pacific plate with eastern China since the Early Cretaceous.
基金Project supported dually by the National Natural Science Foundation of China and Swiss Federal Institute of Technology ,Zurich
文摘Extensive paleomagnetic studies in the Yangtze Block of South China has been performed since the 1980s, and the Phanerozoic APW (apparent polar wander)path has been established based on a large amount of data obtained. However, the Huanan Block in southeastern region still remains unknown paleomagnetically. In order to further understand the plate tectonic patterns and evolutional history prio Mesozoic collision of the
文摘This is the final article in our series dealing with the interplay of spin and gravity that leads to the generation, and continuation of celestial body motions in the universe. In our prior studies we focused on such interactions in the elementary particles, and in the celestial bodies in the solar system. Foremost among the findings was that, along with gravity, matter at all levels exhibits axial spin. We further noted that all freestanding bodies outside our solar system, including the largest such units, the stars and galaxies also spin on their axes. Also, the axial rotation speed of planets in our solar system has a linear positive relationship to their masses, thus hinting at its fundamental and autonomous nature. We have reported that this relationship between the size of the body and its axial rotation speed extends to the stars and even the galaxies. Next, all congregations of matter spin on their axes in the counterclockwise direction;all satellites orbit their mother bodies also in the counterclockwise direction, <i>i.e.</i>: in our solar system, with only rare exceptions, the satellite bodies follow the mother bodies’ axial rotation. This relationship exists also in the case of the rings of planets, the asteroids and the Kuiper belt bodies, as well as the stars and their galaxies. We also noted the intricate involvements between spin and gravity in the exquisite phenomena of synchronous and negative rotations of planets and some satellites;we have explained in detail how these two phenomena occur. The closest large moons of the gas and ice giants and the earth’s moon exhibit synchronous rotation. In this paper we present evidence that these synchronously rotating satellite bodies’ <b>axial rotation speed</b> is closely related to the size and the axial rotation speeds of their respective mother bodies. In the satellites that follow a non-synchronous rotation (most of the planets and their satellites) the satellites’ own rotation speed usually dominates. In all these rotational/orbital motions
文摘在步态识别中,最关键的是获取步态特征之后如何选择最佳投影方向,且计算复杂度较小.因此,根据对现有算法的分析,提出一种基于轮廓特征的的广义步态识别算法.在传统的线性判别分析方法基础上,通过重新定义样本类间离散矩阵寻找最佳投影方向,使不同的目标映射到同一低维空间中,在保留同类结构信息的同时最大化不同类的间距.首先对每个序列进行运动轮廓提取,根据轮廓解卷绕方法将二维轮廓形状转换为一维距离信号,并通过广义线性判别分析方法(Generalized Linear Discriminative Analysis,GLDA)得到最佳投影空间,最终利用支持向量机(Support Vector M achine,SVM)完成分类识别.实验结果表明,该算法简单有效,具有更高的识别率,并且计算代价及处理速度明显优于其他现有算法.
文摘The projection process along a simple closed smooth curve of a nonexplosive diffusion process on a cornplete Riemannian manifold is defined in probabilistic way. The winding numbers of the pmjection process are clockwise and counterclockwise given. The symmetry of the diffusion process is shown to be equivalent to that for any closed smooth curve. the long time average winding numbers of the projection process in two different directions are equal.
