Conversational systems have come a long way since their inception in the 1960 s.After decades of research and development,we have seen progress from Eliza and Parry in the 1960 s and 1970 s,to task-completion systems ...Conversational systems have come a long way since their inception in the 1960 s.After decades of research and development,we have seen progress from Eliza and Parry in the 1960 s and 1970 s,to task-completion systems as in the Defense Advanced Research Projects Agency(DARPA) communicator program in the 2000 s,to intelligent personal assistants such as Siri,in the 2010 s,to today's social chatbots like Xiao Ice.Social chatbots' appeal lies not only in their ability to respond to users' diverse requests,but also in being able to establish an emotional connection with users.The latter is done by satisfying users' need for communication,affection,as well as social belonging.To further the advancement and adoption of social chatbots,their design must focus on user engagement and take both intellectual quotient(IQ) and emotional quotient(EQ) into account.Users should want to engage with a social chatbot;as such,we define the success metric for social chatbots as conversation-turns per session(CPS).Using Xiao Ice as an illustrative example,we discuss key technologies in building social chatbots from core chat to visual awareness to skills.We also show how Xiao Ice can dynamically recognize emotion and engage the user throughout long conversations with appropriate interpersonal responses.As we become the first generation of humans ever living with artificial intelligenc(AI),we have a responsibility to design social chatbots to be both useful and empathetic,so they will become ubiquitous and help society as a whole.展开更多
Recently, the degradation of permafrost and marsh environments in the Da and Xiao Hinggan Mountains has become a great concern as more human activities and pronounced climate warming were observed during the past 30 y...Recently, the degradation of permafrost and marsh environments in the Da and Xiao Hinggan Mountains has become a great concern as more human activities and pronounced climate warming were observed during the past 30 years and projected for the near future. The distr/bution patterns and development mechanisms of the permafrost and marshes have been examined both in theories and in field observations, in order to better understand the symbiosis of permafrost and marshes. The permafrost and marshes in the Da and Xiao Hinggan Mountains display discernible zonations in latitude and elevation. The marsh vegetation canopy, litter and peat soil have good thermal insulation properties for the underlying permafrost, resulting in a thermal offset of 3 ℃ to 4℃ and subsequently suppressing soil temperature. In addition, the much higher thermal conductivity of frozen and ice-rich peat in the active layer is conducive to the development or in favor of the protection of permafrost due to the semi-conductor properties of the soils overlying the permafrost. On the other hand, because permafrost is almost impervious, the osmosis of water in marsh soils can be effectively reduced, timely providing water supplies for helophytes growth or germination in spring. In the Da and Xiao Hinggan Mountains, the permafrost degradation has been accelerating due to the marked climate warming, ever increasing human activities, and the resultant eco-environmental changes. Since the permafrost and marsh environments are symbiotic and interdependent, they need to be managed or protected in a well-coordinated and integrated way.展开更多
Through the field survey, previous researches and interpretation of aerial photos, a landslide information database of Xiaojiang Valley, Yunnan Province was set up based on the remote sensing (RS) and geographic infor...Through the field survey, previous researches and interpretation of aerial photos, a landslide information database of Xiaojiang Valley, Yunnan Province was set up based on the remote sensing (RS) and geographic information system (GIS) technologies. In the paper, a quantitative model for the landslide hazard assessment and zoning was presented, in which the potential energy could be obtained on basis of thorough analysis of the potential sliding volume, distance and direction of the landslide body. Taking landslide potential energy as the index of the hazard severity zonation, the study area was divided into severe, heavy, medium and light hazard zones.展开更多
Objective:To explore the characteristics of Xiao Chai Hu(XCH)decoction in randomized controlled trials(RCTs)using a bibliometric method.Methods:Seven databases including PubMed,Web of Science,Embase,Cochrane library,C...Objective:To explore the characteristics of Xiao Chai Hu(XCH)decoction in randomized controlled trials(RCTs)using a bibliometric method.Methods:Seven databases including PubMed,Web of Science,Embase,Cochrane library,China National Knowledge Infrastructure(CNKI),Chinese Scientific Journal Database(VIP)and Wanfang database were retrieved from inception to May 27,2022.In the study,XCH decoction(or modified)used alone or combined with conventional Western medicine as an intervention measure was included.The basic characteristics,funding support,relevant diseases,intervention methods,and adverse events(AEs)were analyzed.Data analysis was performed using SPSS 26.0 software.Results:A total of 813 RCTs were included,published from 1989 to 2022.There was only one Englishlanguage literature with the recent impact factor of 5.374.There were 147 studies were from Chineselanguage core journals,with the highest impact factor of 2.414.Only 6.15%of the literatures mentioned funding support.96.31%of the included literature reported the statistical significance of using XCH decoction.The diseases treated mainly included chronic hepatitis B(9.35%),cough variant asthma(5.66%),dizziness(5.54%),bile reflux gastritis(4.43%),and fever(4.18%).However,the overall research design of the included literature was poor,and large sample size,multicenter RCTs are needed.The incidence of AEs of XCH decoction alone was 8.86%,which was significantly lower than that of conventional Western medicine treatment.The combination of XCH decoction and conventional Western medicine treatment could reduce the incidence of AEs,and no serious adverse event was reported.Conclusion:Although the included studies show that XCH decoction is widely used,and has good efficacy and few AEs.Due to the low quality of the included RCTs,there may be some bias,and its rational use based on the specific conditions is recommended in clinical practice.展开更多
Increasing cases of lake eutrophication globally have raised concerns among stakeholders,and particularly in China.Evaluating the causes of eutrophication in waterways is essential for effective pollution prevention a...Increasing cases of lake eutrophication globally have raised concerns among stakeholders,and particularly in China.Evaluating the causes of eutrophication in waterways is essential for effective pollution prevention and control.Xiao Xingkai Lake is part of and connected to Xingkai(Khanka)Lake,a boundary lake between China and Russia.In this study,we investigated the spatio-temporal variabilities in water quality(i.e.,dissolved oxygen(DO),total nitrogen(TN),total phosphorus(TP),chemical oxygen demand(CODMn)and ammonium-nitrogen(NH4+-N))in Xiao Xingkai Lake,from 2012 to 2014,after which a Trophic Level Index was used to evaluate trophic status,in addition to the factors influencing water quality variation in the lake.The DO,TN,TP,CODMn and NH4+-N concentrations were 0.44-15.57,0.16-5.11,0.01-0.45,0.16-48.31,and 0.19-0.78 mg/L,respectively.Compared to the Environmental Quality Standards for surface water(GB 3838-2002)in China,the lake transitioned to an oligotrophic status in 2013 and 2014 from a mesotrophic status in 2012,TN and TP concentrations were the key factors influencing water quality of Xiao Xingkai Lake.Non-para-metric test results showed that sampling time and sites had significant effects on water quality.Water quality was worse in summer and in tourism and aquaculture areas,followed by agricultural drainage areas.Furthermore,lake water trophic status fluctuated between medium eutrophic and light eutrophic status from September 2012 to September 2014,and was negatively correlated with water level.Water quality in tourism and aquaculture sites were medium eutrophic,while in agricultural areas were light eutrophic.According to the results,high water-level fluctuations and anthropogenic activities were the key factor driving variability in physicochemical parameters associated with water quality in Xiao Xingkai Lake.展开更多
In the past few years,the medical knowledge transfer in a West-East direction has attracted increased scholarly attention from European and American historians,whereas studies on such“knowledge travels”conducted in ...In the past few years,the medical knowledge transfer in a West-East direction has attracted increased scholarly attention from European and American historians,whereas studies on such“knowledge travels”conducted in the East Asian context focus mainly on political and socio-cultural concepts.To provide an alternative perspective on the travel of Western medicine to Chinese soil,a case study on“diabetes”is conducted,under the theoretical framework of“transcultural conceptual history.”This article systematically analyzes the standardization,popularization,politicization,and derivatization of“diabetes,”calling for further attention to transcultural histories of medical concepts in modern China.展开更多
Shen Congwen and Thomas Hardy are both known for their regional novels,Hardy for his "Wessex" novels,and Shen Congwen for his "World of Xiangxi" .Both writers display a sense of transcendence and w...Shen Congwen and Thomas Hardy are both known for their regional novels,Hardy for his "Wessex" novels,and Shen Congwen for his "World of Xiangxi" .Both writers display a sense of transcendence and wandering in their female characters.Both Xiao Xiao in Shen Congwen' s Xiao Xiao and Eustacia in Hardy' s The Return of the Native transcend the traditions and customs of their times,and experience a consequent wandering.But the ways of the two writers in presenting their heroines is quite different.While Xiao Xiao was mentally active but did nothing except follow the traditional system,Eustacia' s thought was followed by her own words and actions.展开更多
文摘Conversational systems have come a long way since their inception in the 1960 s.After decades of research and development,we have seen progress from Eliza and Parry in the 1960 s and 1970 s,to task-completion systems as in the Defense Advanced Research Projects Agency(DARPA) communicator program in the 2000 s,to intelligent personal assistants such as Siri,in the 2010 s,to today's social chatbots like Xiao Ice.Social chatbots' appeal lies not only in their ability to respond to users' diverse requests,but also in being able to establish an emotional connection with users.The latter is done by satisfying users' need for communication,affection,as well as social belonging.To further the advancement and adoption of social chatbots,their design must focus on user engagement and take both intellectual quotient(IQ) and emotional quotient(EQ) into account.Users should want to engage with a social chatbot;as such,we define the success metric for social chatbots as conversation-turns per session(CPS).Using Xiao Ice as an illustrative example,we discuss key technologies in building social chatbots from core chat to visual awareness to skills.We also show how Xiao Ice can dynamically recognize emotion and engage the user throughout long conversations with appropriate interpersonal responses.As we become the first generation of humans ever living with artificial intelligenc(AI),we have a responsibility to design social chatbots to be both useful and empathetic,so they will become ubiquitous and help society as a whole.
基金Under the auspices of National Natural Science Foundation of China (No. 40701031,40225001,J0630966)3rd-term Knowledge Innovation Program of Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences (No. O650445)
文摘Recently, the degradation of permafrost and marsh environments in the Da and Xiao Hinggan Mountains has become a great concern as more human activities and pronounced climate warming were observed during the past 30 years and projected for the near future. The distr/bution patterns and development mechanisms of the permafrost and marshes have been examined both in theories and in field observations, in order to better understand the symbiosis of permafrost and marshes. The permafrost and marshes in the Da and Xiao Hinggan Mountains display discernible zonations in latitude and elevation. The marsh vegetation canopy, litter and peat soil have good thermal insulation properties for the underlying permafrost, resulting in a thermal offset of 3 ℃ to 4℃ and subsequently suppressing soil temperature. In addition, the much higher thermal conductivity of frozen and ice-rich peat in the active layer is conducive to the development or in favor of the protection of permafrost due to the semi-conductor properties of the soils overlying the permafrost. On the other hand, because permafrost is almost impervious, the osmosis of water in marsh soils can be effectively reduced, timely providing water supplies for helophytes growth or germination in spring. In the Da and Xiao Hinggan Mountains, the permafrost degradation has been accelerating due to the marked climate warming, ever increasing human activities, and the resultant eco-environmental changes. Since the permafrost and marsh environments are symbiotic and interdependent, they need to be managed or protected in a well-coordinated and integrated way.
基金Supported by the Special Project of Chinese Academy of sciences for Mountain Hazards: Debris Flow and Landslide and Oriented Project of Knowledge Innovation of Chinese Academy of sciences(KZCX2-SW-319)
文摘Through the field survey, previous researches and interpretation of aerial photos, a landslide information database of Xiaojiang Valley, Yunnan Province was set up based on the remote sensing (RS) and geographic information system (GIS) technologies. In the paper, a quantitative model for the landslide hazard assessment and zoning was presented, in which the potential energy could be obtained on basis of thorough analysis of the potential sliding volume, distance and direction of the landslide body. Taking landslide potential energy as the index of the hazard severity zonation, the study area was divided into severe, heavy, medium and light hazard zones.
基金supported by a Project of National Administration of Traditional Chinese Medicine(TB2021011)“Excellence Program”of the Beijing University of Chinese Medicine.
文摘Objective:To explore the characteristics of Xiao Chai Hu(XCH)decoction in randomized controlled trials(RCTs)using a bibliometric method.Methods:Seven databases including PubMed,Web of Science,Embase,Cochrane library,China National Knowledge Infrastructure(CNKI),Chinese Scientific Journal Database(VIP)and Wanfang database were retrieved from inception to May 27,2022.In the study,XCH decoction(or modified)used alone or combined with conventional Western medicine as an intervention measure was included.The basic characteristics,funding support,relevant diseases,intervention methods,and adverse events(AEs)were analyzed.Data analysis was performed using SPSS 26.0 software.Results:A total of 813 RCTs were included,published from 1989 to 2022.There was only one Englishlanguage literature with the recent impact factor of 5.374.There were 147 studies were from Chineselanguage core journals,with the highest impact factor of 2.414.Only 6.15%of the literatures mentioned funding support.96.31%of the included literature reported the statistical significance of using XCH decoction.The diseases treated mainly included chronic hepatitis B(9.35%),cough variant asthma(5.66%),dizziness(5.54%),bile reflux gastritis(4.43%),and fever(4.18%).However,the overall research design of the included literature was poor,and large sample size,multicenter RCTs are needed.The incidence of AEs of XCH decoction alone was 8.86%,which was significantly lower than that of conventional Western medicine treatment.The combination of XCH decoction and conventional Western medicine treatment could reduce the incidence of AEs,and no serious adverse event was reported.Conclusion:Although the included studies show that XCH decoction is widely used,and has good efficacy and few AEs.Due to the low quality of the included RCTs,there may be some bias,and its rational use based on the specific conditions is recommended in clinical practice.
基金Under the auspices of the National Natural Science Foundation of China(No.41771120,41771550)the National Basic Research Program of China(No.2012CB956100)。
文摘Increasing cases of lake eutrophication globally have raised concerns among stakeholders,and particularly in China.Evaluating the causes of eutrophication in waterways is essential for effective pollution prevention and control.Xiao Xingkai Lake is part of and connected to Xingkai(Khanka)Lake,a boundary lake between China and Russia.In this study,we investigated the spatio-temporal variabilities in water quality(i.e.,dissolved oxygen(DO),total nitrogen(TN),total phosphorus(TP),chemical oxygen demand(CODMn)and ammonium-nitrogen(NH4+-N))in Xiao Xingkai Lake,from 2012 to 2014,after which a Trophic Level Index was used to evaluate trophic status,in addition to the factors influencing water quality variation in the lake.The DO,TN,TP,CODMn and NH4+-N concentrations were 0.44-15.57,0.16-5.11,0.01-0.45,0.16-48.31,and 0.19-0.78 mg/L,respectively.Compared to the Environmental Quality Standards for surface water(GB 3838-2002)in China,the lake transitioned to an oligotrophic status in 2013 and 2014 from a mesotrophic status in 2012,TN and TP concentrations were the key factors influencing water quality of Xiao Xingkai Lake.Non-para-metric test results showed that sampling time and sites had significant effects on water quality.Water quality was worse in summer and in tourism and aquaculture areas,followed by agricultural drainage areas.Furthermore,lake water trophic status fluctuated between medium eutrophic and light eutrophic status from September 2012 to September 2014,and was negatively correlated with water level.Water quality in tourism and aquaculture sites were medium eutrophic,while in agricultural areas were light eutrophic.According to the results,high water-level fluctuations and anthropogenic activities were the key factor driving variability in physicochemical parameters associated with water quality in Xiao Xingkai Lake.
基金This study was financed by Shanghai Philosophy and Social Sciences Planning Project(No.2022EYY008).
文摘In the past few years,the medical knowledge transfer in a West-East direction has attracted increased scholarly attention from European and American historians,whereas studies on such“knowledge travels”conducted in the East Asian context focus mainly on political and socio-cultural concepts.To provide an alternative perspective on the travel of Western medicine to Chinese soil,a case study on“diabetes”is conducted,under the theoretical framework of“transcultural conceptual history.”This article systematically analyzes the standardization,popularization,politicization,and derivatization of“diabetes,”calling for further attention to transcultural histories of medical concepts in modern China.
文摘Shen Congwen and Thomas Hardy are both known for their regional novels,Hardy for his "Wessex" novels,and Shen Congwen for his "World of Xiangxi" .Both writers display a sense of transcendence and wandering in their female characters.Both Xiao Xiao in Shen Congwen' s Xiao Xiao and Eustacia in Hardy' s The Return of the Native transcend the traditions and customs of their times,and experience a consequent wandering.But the ways of the two writers in presenting their heroines is quite different.While Xiao Xiao was mentally active but did nothing except follow the traditional system,Eustacia' s thought was followed by her own words and actions.
