In this paper,we consider the Chan–Vese(C-V)model for image segmentation and obtain its numerical solution accurately and efficiently.For this purpose,we present a local radial basis function method based on a Gaussi...In this paper,we consider the Chan–Vese(C-V)model for image segmentation and obtain its numerical solution accurately and efficiently.For this purpose,we present a local radial basis function method based on a Gaussian kernel(GA-LRBF)for spatial discretization.Compared to the standard radial basis functionmethod,this approach consumes less CPU time and maintains good stability because it uses only a small subset of points in the whole computational domain.Additionally,since the Gaussian function has the property of dimensional separation,the GA-LRBF method is suitable for dealing with isotropic images.Finally,a numerical scheme that couples GA-LRBF with the fourth-order Runge–Kutta method is applied to the C-V model,and a comparison of some numerical results demonstrates that this scheme achieves much more reliable image segmentation.展开更多
Regarding the Chan Buddhism lamp records from the Song Dynasty and starting from Jing De Zhuan Deng Lu,the category of“enlightened masters in Chan Buddhism”禪門達者was listed separately,meaning a separate category w...Regarding the Chan Buddhism lamp records from the Song Dynasty and starting from Jing De Zhuan Deng Lu,the category of“enlightened masters in Chan Buddhism”禪門達者was listed separately,meaning a separate category was established for eccentric monks who pretended to be crazy,had unknown inheritance and miraculous deeds,and were difficult to classify.The following lamp records named this category of eccentric monks as“sages”散聖,or“saints”應化聖賢,which constructed another historical genealogy for the special Chan Buddhism eccentric monks.Moreover,the early lamp records included mostly idiosyncratic mad monks from previous dynasties.Since the Southern Song Dynasty,Chan Buddhism historical materials included many sages from the current dynasty.Therefore,this study mainly examines how the genealogy of Chan Buddhism eccentric monks was constructed in Song Dynasty Chan Buddhism lamp records,including quotations,and organizes the images of eccentric monks in the Song Dynasty,as written in Chan Buddhism historical materials,in order that the meaning of existence of these enlightened masters,sages,saints,etc.,included in the genealogy of Song Dynasty eccentric monks in the history of Chan Buddhism can be reflected.展开更多
The culture of landscape constitutes one of the vital characteristics of Chinese culture,in which,Chan Buddhism is a typical kind of Buddhist culture expressed by the natural objects.Chinese Buddhism,represented by Ch...The culture of landscape constitutes one of the vital characteristics of Chinese culture,in which,Chan Buddhism is a typical kind of Buddhist culture expressed by the natural objects.Chinese Buddhism,represented by Chan School,is interpreted by the beautiful natural scenery,therefore it is closely related to the tourism from the ancient time.However,this link is to defend Buddhist tourism,which is inevitably criticized,since the secularization of sacred Buddhism,though Buddhist tourism is beneficial for life,society,economy,and Buddhism itself.But this sort of criticism is a misunderstanding of Chinese Buddhism since that Chinese Buddhism absorbs Zhuang Zi’s thought that“the ultimate truth(道)is in shit(屎尿)”1,so that it purports to the sacred dimension which is overlapped by the secular aspect.For example,the short poems composed by masters in Chan School“The Buddhist dharma is in this world,so that the enlightenment could not be realized outside of the human world”,“where there is bamboo and flower,there is dharma and prajna”,are the best way to express this kind of divine concept,moreover,Buddhist tourism is an effective practice to allocate this divine connotation.展开更多
The prosperous development of the“Maritime Silk Road”in the 17th century not only brought convenience in sea transportation and promoted trade between countries,but also acted as a bridge connecting countries.This b...The prosperous development of the“Maritime Silk Road”in the 17th century not only brought convenience in sea transportation and promoted trade between countries,but also acted as a bridge connecting countries.This bridge has the function of cultural exchange between peoples,especially in introducing and promoting China’s cultural and ideological quintessence with neighboring countries.During this period,Linji and Caodong sects of Chinese Zen Buddhism were spread directly into Cochinchina of Dai Viet through Chinese senior monks who followed merchant ships to this place.Among them was the Most Venarable Shilian Dashan,a senior monk at Changshou Temple,Guangzhou,who accepted Lord Nguyen Phuc Chu’s invitation to teach the Soto Dharma in Cochinchina for nearly two years(1695-1696).Based on the study of relevant historical documents and autobiographical works on this trip byMost Ven.Dashan,the article presents his biography and activities.Moreover,this article analyzes the method of spreading Dharma,Chan ideology,as well as the significance of his Dharma propagation activities for Buddhism in Cochinchina at that time.展开更多
Toad venom, called as Chan Su in China, is a widely used traditional Chinese medicine(TCM) whose active components are mainly bufadienolides. Chan Su could exhibit cardiotonic, anti-microbial, anti-inflammatory and, m...Toad venom, called as Chan Su in China, is a widely used traditional Chinese medicine(TCM) whose active components are mainly bufadienolides. Chan Su could exhibit cardiotonic, anti-microbial, anti-inflammatory and, most importantly, anti-cancer effects. In the present review, reports about the in vitro, in vivo and clinical anti-cancer effects of Chan Su or its representative component, bufalin, were summarized.And, reported anti-cancer mechanisms of cardenolides, structure analogues of bufadienolides, were also introduced. Based on the results got from research of Chan Su/bufalin and the results from cardenolides, possible signal network related to the anti-cancer effects of Chan Su/bufalin was predicted. Furthermore, future potential use of Chan Su in anti-cancer therapy was discussed.展开更多
弹箭残骸舱段的准确定位和连续监测是实现弹箭残骸舱段回收的关键技术之一。根据弹箭残骸飞行轨迹的特点,基于多站到达时间差(time difference of arrival,TDOA)无源定位原理,设计了弹箭残骸舱段轨迹定位监测技术方案,根据多基站接收到...弹箭残骸舱段的准确定位和连续监测是实现弹箭残骸舱段回收的关键技术之一。根据弹箭残骸飞行轨迹的特点,基于多站到达时间差(time difference of arrival,TDOA)无源定位原理,设计了弹箭残骸舱段轨迹定位监测技术方案,根据多基站接收到弹箭残骸舱段主动辐射信号的时间差信息,采用Chan算法完成对弹箭残骸舱段位置信息的解算,实现对弹箭残骸轨迹的连续监测。采用火箭回收舱段飞行轨迹数据,对弹箭残骸轨迹监测技术方案的可行性进行了仿真验证,通过定位精度对比试验,分析了基站距离和基站构型对弹箭残骸舱段轨迹监测效果的影响,仿真计算结果表明:在正方形构型下,基站间距离越大,残骸舱段定位精度越高;在菱形、Y字型、正方形三种构型中,菱形构型定位精度最好。展开更多
基于到达时差(Time Difference of Arrival,TDOA)的多声源定位中,由于麦克风阵列对测量的TDOA值无法与目标声源进行关联,声源定位过程会产生关联模糊,从而影响多声源定位结果的精度。针对这一问题,提出基于阵列重构的多声源关联模糊消...基于到达时差(Time Difference of Arrival,TDOA)的多声源定位中,由于麦克风阵列对测量的TDOA值无法与目标声源进行关联,声源定位过程会产生关联模糊,从而影响多声源定位结果的精度。针对这一问题,提出基于阵列重构的多声源关联模糊消除方法。通过广义互相关(Generialized Cross⁃Correlation,GCC)算法估计麦克风阵列的TDOA值,再利用排序算法获得定位麦克风阵列所有可能的TDOAs序列,并基于Chan算法估计所有可能的声源。通过轮换定位麦克风阵列的参考麦克风,构造多组校验子阵列,利用真实声源与阵列麦克风的相对位置关系来滤除虚假声源。对于不同校验子阵列筛选出的所有声源位置,以出现频数最大化原则再次进行冗余校验,从而提升最终筛选真实声源的准确性。仿真及实验结果表明,该方法能够以最少数量常规麦克风有效消除多声源定位中的虚假声源。在同等麦克风数量的情况下,该方法的定位精度及定位鲁棒性高于对比方法。展开更多
TDOA(Time Difference of Arrival)测距方式是UWB(Ultra Wide Band)室内定位的常用方法,针对其不可避免的随机误差以及目标改变运动状态定位不准确的问题,文中提出了一种Chan-Taylor-IMMKF(Interacting Multiple Model Kalman Filter)...TDOA(Time Difference of Arrival)测距方式是UWB(Ultra Wide Band)室内定位的常用方法,针对其不可避免的随机误差以及目标改变运动状态定位不准确的问题,文中提出了一种Chan-Taylor-IMMKF(Interacting Multiple Model Kalman Filter)定位算法。该算法由Chan-Taylor加权算法与加入自适应算法IMM卡尔曼滤波算法组成,通过Chan-Taylor加权算法初次取得目标估计坐标,将该坐标值作为自适应算法IMM的卡尔曼滤波器的测量值,对目标坐标进行多次滤波处理,最终加权得到目标的最终估计坐标。实验将该算法与未滤波的Chan-Taylor加权算法、使用传统的卡尔曼滤波算法进行对比,结果显示该算法有效减小了系统的随机误差,并克服了传统卡尔曼滤波器在目标忽然改变运动状态时不能及时跟踪从而产生较大误差的问题,将误差标准差均值控制在15 cm之内。展开更多
基金sponsored by Guangdong Basic and Applied Basic Research Foundation under Grant No.2021A1515110680Guangzhou Basic and Applied Basic Research under Grant No.202102020340.
文摘In this paper,we consider the Chan–Vese(C-V)model for image segmentation and obtain its numerical solution accurately and efficiently.For this purpose,we present a local radial basis function method based on a Gaussian kernel(GA-LRBF)for spatial discretization.Compared to the standard radial basis functionmethod,this approach consumes less CPU time and maintains good stability because it uses only a small subset of points in the whole computational domain.Additionally,since the Gaussian function has the property of dimensional separation,the GA-LRBF method is suitable for dealing with isotropic images.Finally,a numerical scheme that couples GA-LRBF with the fourth-order Runge–Kutta method is applied to the C-V model,and a comparison of some numerical results demonstrates that this scheme achieves much more reliable image segmentation.
文摘Regarding the Chan Buddhism lamp records from the Song Dynasty and starting from Jing De Zhuan Deng Lu,the category of“enlightened masters in Chan Buddhism”禪門達者was listed separately,meaning a separate category was established for eccentric monks who pretended to be crazy,had unknown inheritance and miraculous deeds,and were difficult to classify.The following lamp records named this category of eccentric monks as“sages”散聖,or“saints”應化聖賢,which constructed another historical genealogy for the special Chan Buddhism eccentric monks.Moreover,the early lamp records included mostly idiosyncratic mad monks from previous dynasties.Since the Southern Song Dynasty,Chan Buddhism historical materials included many sages from the current dynasty.Therefore,this study mainly examines how the genealogy of Chan Buddhism eccentric monks was constructed in Song Dynasty Chan Buddhism lamp records,including quotations,and organizes the images of eccentric monks in the Song Dynasty,as written in Chan Buddhism historical materials,in order that the meaning of existence of these enlightened masters,sages,saints,etc.,included in the genealogy of Song Dynasty eccentric monks in the history of Chan Buddhism can be reflected.
基金supported by the funding of program name“The Research of East Asian and Chinese Religion”(东亚与中国宗教研究).Project No.22JJD730002.
文摘The culture of landscape constitutes one of the vital characteristics of Chinese culture,in which,Chan Buddhism is a typical kind of Buddhist culture expressed by the natural objects.Chinese Buddhism,represented by Chan School,is interpreted by the beautiful natural scenery,therefore it is closely related to the tourism from the ancient time.However,this link is to defend Buddhist tourism,which is inevitably criticized,since the secularization of sacred Buddhism,though Buddhist tourism is beneficial for life,society,economy,and Buddhism itself.But this sort of criticism is a misunderstanding of Chinese Buddhism since that Chinese Buddhism absorbs Zhuang Zi’s thought that“the ultimate truth(道)is in shit(屎尿)”1,so that it purports to the sacred dimension which is overlapped by the secular aspect.For example,the short poems composed by masters in Chan School“The Buddhist dharma is in this world,so that the enlightenment could not be realized outside of the human world”,“where there is bamboo and flower,there is dharma and prajna”,are the best way to express this kind of divine concept,moreover,Buddhist tourism is an effective practice to allocate this divine connotation.
基金funded by 2022-2024 China Overseas Chinese Federation Project:“Study on the spread and development of Chinese Zen Buddhism in Vietnam from 17th to 19th Century”(Project No.22BZQK232)2022 Guangxi Philosophy and Social Science Planning Research Project:“Study on the History of Buddhist Exchange between China and Vietnam”(Project No.22BZJ001).
文摘The prosperous development of the“Maritime Silk Road”in the 17th century not only brought convenience in sea transportation and promoted trade between countries,but also acted as a bridge connecting countries.This bridge has the function of cultural exchange between peoples,especially in introducing and promoting China’s cultural and ideological quintessence with neighboring countries.During this period,Linji and Caodong sects of Chinese Zen Buddhism were spread directly into Cochinchina of Dai Viet through Chinese senior monks who followed merchant ships to this place.Among them was the Most Venarable Shilian Dashan,a senior monk at Changshou Temple,Guangzhou,who accepted Lord Nguyen Phuc Chu’s invitation to teach the Soto Dharma in Cochinchina for nearly two years(1695-1696).Based on the study of relevant historical documents and autobiographical works on this trip byMost Ven.Dashan,the article presents his biography and activities.Moreover,this article analyzes the method of spreading Dharma,Chan ideology,as well as the significance of his Dharma propagation activities for Buddhism in Cochinchina at that time.
基金Partly supported by the National Science&technology Major Project of China(2014ZX09301-306-03)Shanghai Science&Technology Support Program(13431900401)the National Nature Science Foundation of China(81373964)
文摘Toad venom, called as Chan Su in China, is a widely used traditional Chinese medicine(TCM) whose active components are mainly bufadienolides. Chan Su could exhibit cardiotonic, anti-microbial, anti-inflammatory and, most importantly, anti-cancer effects. In the present review, reports about the in vitro, in vivo and clinical anti-cancer effects of Chan Su or its representative component, bufalin, were summarized.And, reported anti-cancer mechanisms of cardenolides, structure analogues of bufadienolides, were also introduced. Based on the results got from research of Chan Su/bufalin and the results from cardenolides, possible signal network related to the anti-cancer effects of Chan Su/bufalin was predicted. Furthermore, future potential use of Chan Su in anti-cancer therapy was discussed.
文摘弹箭残骸舱段的准确定位和连续监测是实现弹箭残骸舱段回收的关键技术之一。根据弹箭残骸飞行轨迹的特点,基于多站到达时间差(time difference of arrival,TDOA)无源定位原理,设计了弹箭残骸舱段轨迹定位监测技术方案,根据多基站接收到弹箭残骸舱段主动辐射信号的时间差信息,采用Chan算法完成对弹箭残骸舱段位置信息的解算,实现对弹箭残骸轨迹的连续监测。采用火箭回收舱段飞行轨迹数据,对弹箭残骸轨迹监测技术方案的可行性进行了仿真验证,通过定位精度对比试验,分析了基站距离和基站构型对弹箭残骸舱段轨迹监测效果的影响,仿真计算结果表明:在正方形构型下,基站间距离越大,残骸舱段定位精度越高;在菱形、Y字型、正方形三种构型中,菱形构型定位精度最好。
文摘基于到达时差(Time Difference of Arrival,TDOA)的多声源定位中,由于麦克风阵列对测量的TDOA值无法与目标声源进行关联,声源定位过程会产生关联模糊,从而影响多声源定位结果的精度。针对这一问题,提出基于阵列重构的多声源关联模糊消除方法。通过广义互相关(Generialized Cross⁃Correlation,GCC)算法估计麦克风阵列的TDOA值,再利用排序算法获得定位麦克风阵列所有可能的TDOAs序列,并基于Chan算法估计所有可能的声源。通过轮换定位麦克风阵列的参考麦克风,构造多组校验子阵列,利用真实声源与阵列麦克风的相对位置关系来滤除虚假声源。对于不同校验子阵列筛选出的所有声源位置,以出现频数最大化原则再次进行冗余校验,从而提升最终筛选真实声源的准确性。仿真及实验结果表明,该方法能够以最少数量常规麦克风有效消除多声源定位中的虚假声源。在同等麦克风数量的情况下,该方法的定位精度及定位鲁棒性高于对比方法。