Rivers and groundwater are the main water sources for cities.The mutual transformation between river water and groundwater makes it difficult to accurately evaluate and rationally utilize water resources.Scientificall...Rivers and groundwater are the main water sources for cities.The mutual transformation between river water and groundwater makes it difficult to accurately evaluate and rationally utilize water resources.Scientifically quantifying the interaction of surface water and groundwater remains challenging.Taking Chan River Basin as an example,this study aimed to determine the interconversion processes of groundwater and surface water by hydrogeochemical genesis mechanism analysis,isotope tracing,and end-member mixing analysis(EMMA).28 surface water samples and 23 groundwater samples were collected and analyzed during December 2023 and January 2024.Results showed thewater bodies in the study area were dominated by the HCO_(3)-Ca,HCO_(3)-Ca·Mg·Na,and HCO_(3)·SO_(4)-Ca·Na types,with hydrogeochemical processes controlled by the weathering and dissolution of both carbonate and silicate rock minerals.The river water in the upper reaches of the study area is mainly recharged by groundwater,with the average recharge ratio of 54.10%.Similarly,river water is still recharged by groundwater in the middle reaches,the average recharge ratio changes to 28.61%.In the downstream area,where Xi’an City located,due to the heavy exploitation of groundwater,the river water recharges to groundwater with an average recharge ratio of 85.23%,although in the immediate middle reaches,groundwater still replenishes surface waterwith a recharge rate of 75.00%.The results laid the bases for the reasonable utilization of water resources in the Chan River Basin and also served as a reference in other regions of the world.展开更多
本文设计了一种基于无线信号时域特征值抽取的无源TDOA(Time Difference of Arrival,到达时间差)实时定位系统,采用多台无线信号接收装备(数量≥3),在可靠通讯链路和高精度时钟同步机制的保障下,可按需设定时间间隔及采样率对无线信号...本文设计了一种基于无线信号时域特征值抽取的无源TDOA(Time Difference of Arrival,到达时间差)实时定位系统,采用多台无线信号接收装备(数量≥3),在可靠通讯链路和高精度时钟同步机制的保障下,可按需设定时间间隔及采样率对无线信号进行时域采样、特征值抽取。基于目标信号质量最佳的原则,本文选取3台无线信号接收装备的采样数据进行滤波降采处理、特征值互相关计算,得到目标信号到达任意两台设备间的时差,并对时差进行误差判定以提升计算效率。最后,建立通用TDOA数学模型并基于Chan算法计算目标信号位置信息,实现每秒多次位置实时更新。展开更多
The inability to access brain tissue has greatly hindered our ability to study and care for individuals suffering from psychiatric and neurological conditions.Critics have questioned efforts to develop peripheral bloo...The inability to access brain tissue has greatly hindered our ability to study and care for individuals suffering from psychiatric and neurological conditions.Critics have questioned efforts to develop peripheral blood biomarkers in neurological and psychiatric disorders based on the assertion that disease pathology is limited to the brain.The discovery that all tissues,including the brain,release extracellular vesicles(Raposo and Stoorvogel,2013)and cell free DNAs(Chan et al.,2013)into various body fluids has provided a potential way to measure activity from inaccessible tissues like the central nervous system(CNS)and has given rise to the term“liquid biopsy.”The development of liquid biopsies that can diagnose and predict the course of psychiatric and neurological disorders would be transformative.The ability to predict episodic events such as mania,depression,and risk for suicide would be particularly useful for psychiatric care as it would enable the development of interventions that prevent mortality and improve outcomes.Additionally,biomarkers that are informative about drug response and aid in treatment decisions would be a significant advance in psychiatric care as it would prevent patients from having to endure multiple courses of ineffective treatments and side effects.展开更多
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
基金supported by the National Natural Science Foundation of China(Nos.42341102 and 42102288)the Forestry Science and Technology Innovation Project of Shaanxi Province(No.SXLK2023–02–1)+1 种基金the Fundamental Research Funds for the Central Universities,China(No.300102263401)the Fundamental Research Funds for the Central Universities,China(No.300102294905).
文摘Rivers and groundwater are the main water sources for cities.The mutual transformation between river water and groundwater makes it difficult to accurately evaluate and rationally utilize water resources.Scientifically quantifying the interaction of surface water and groundwater remains challenging.Taking Chan River Basin as an example,this study aimed to determine the interconversion processes of groundwater and surface water by hydrogeochemical genesis mechanism analysis,isotope tracing,and end-member mixing analysis(EMMA).28 surface water samples and 23 groundwater samples were collected and analyzed during December 2023 and January 2024.Results showed thewater bodies in the study area were dominated by the HCO_(3)-Ca,HCO_(3)-Ca·Mg·Na,and HCO_(3)·SO_(4)-Ca·Na types,with hydrogeochemical processes controlled by the weathering and dissolution of both carbonate and silicate rock minerals.The river water in the upper reaches of the study area is mainly recharged by groundwater,with the average recharge ratio of 54.10%.Similarly,river water is still recharged by groundwater in the middle reaches,the average recharge ratio changes to 28.61%.In the downstream area,where Xi’an City located,due to the heavy exploitation of groundwater,the river water recharges to groundwater with an average recharge ratio of 85.23%,although in the immediate middle reaches,groundwater still replenishes surface waterwith a recharge rate of 75.00%.The results laid the bases for the reasonable utilization of water resources in the Chan River Basin and also served as a reference in other regions of the world.
文摘本文设计了一种基于无线信号时域特征值抽取的无源TDOA(Time Difference of Arrival,到达时间差)实时定位系统,采用多台无线信号接收装备(数量≥3),在可靠通讯链路和高精度时钟同步机制的保障下,可按需设定时间间隔及采样率对无线信号进行时域采样、特征值抽取。基于目标信号质量最佳的原则,本文选取3台无线信号接收装备的采样数据进行滤波降采处理、特征值互相关计算,得到目标信号到达任意两台设备间的时差,并对时差进行误差判定以提升计算效率。最后,建立通用TDOA数学模型并基于Chan算法计算目标信号位置信息,实现每秒多次位置实时更新。
基金supported by Department of Defense grant HT9425-24-1-0030 a grant from the Stanley Medical Research Institute(to SS).
文摘The inability to access brain tissue has greatly hindered our ability to study and care for individuals suffering from psychiatric and neurological conditions.Critics have questioned efforts to develop peripheral blood biomarkers in neurological and psychiatric disorders based on the assertion that disease pathology is limited to the brain.The discovery that all tissues,including the brain,release extracellular vesicles(Raposo and Stoorvogel,2013)and cell free DNAs(Chan et al.,2013)into various body fluids has provided a potential way to measure activity from inaccessible tissues like the central nervous system(CNS)and has given rise to the term“liquid biopsy.”The development of liquid biopsies that can diagnose and predict the course of psychiatric and neurological disorders would be transformative.The ability to predict episodic events such as mania,depression,and risk for suicide would be particularly useful for psychiatric care as it would enable the development of interventions that prevent mortality and improve outcomes.Additionally,biomarkers that are informative about drug response and aid in treatment decisions would be a significant advance in psychiatric care as it would prevent patients from having to endure multiple courses of ineffective treatments and side effects.
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.
