Based on data of daily average temperature recorded by 29 meteorological observation stations in western Sichuan during 1961-2011,variation characteristics of temperature in western Sichuan in the past 50 years were a...Based on data of daily average temperature recorded by 29 meteorological observation stations in western Sichuan during 1961-2011,variation characteristics of temperature in western Sichuan in the past 50 years were analyzed. The results showed that average temperature in western Sichuan showed an increasing trend during 1961-2011,and the linear fitting growth rate of temperature was 0. 42 ℃/10 a. In the four seasons,average temperature also showed an increasing trend. Among the four seasons,temperature increased most significantly in summer and autumn,followed by winter,while temperature increase was weak in spring. During 1961-2011,average temperature in western Sichuan continued to grow from the 1960 s to the 21 stcentury.展开更多
Tourism impact research from a sustainable livelihood perspective is of great significance for improving peasant households’ livelihood, reducing the livelihood vulnerability of peasant households and promoting the s...Tourism impact research from a sustainable livelihood perspective is of great significance for improving peasant households’ livelihood, reducing the livelihood vulnerability of peasant households and promoting the sustainable development of rural tourist destinations. Jiaju Tibetan Village is a typical rural tourist destination relying on natural and humanistic tourism resources. Based on field investigation, this paper systematically analyzes the impact of tourism development on local peasant households’ livelihood. The research shows that:① after tourism development, the means of livelihood of peasant households there are more diversified, the structure of livelihoods changes, the number of peasant households engaged in tourism-related livelihood activities has increased significantly, and the number of peasant households engaged in traditional livelihood activities has been greatly reduced;② driven by the external development of rural tourism, peasant households choose reasonable means of livelihood based on their own attributes, and there are four types of peasant households with different combinations of livelihood activities and household characteristics, namely, labor-oriented peasant households, tourism-labor peasant households, tourism-specialized peasant households, and mixed peasant households. Under the influence of rural tourism development, peasant households’ livelihood has increased, and peasant’s livelihood vulnerability has decreased, especially the sustainability of the livelihood of rural tourism operators has increased.展开更多
穿墙目标检测在安防、智能家居和应急救援等方面具有重要的应用前景。目前,基于Wi-Fi的穿墙目标检测方法需在检测区域内安装额外设备,或需对硬件进行复杂改动。针对上述问题,提出一种新颖的基于Wi-Fi穿墙雷达的移动目标检测系统WiTWR,...穿墙目标检测在安防、智能家居和应急救援等方面具有重要的应用前景。目前,基于Wi-Fi的穿墙目标检测方法需在检测区域内安装额外设备,或需对硬件进行复杂改动。针对上述问题,提出一种新颖的基于Wi-Fi穿墙雷达的移动目标检测系统WiTWR,在检测区域内无附加设备并无需对硬件进行任何改动的情况下,实现墙后无源移动目标检测。对接收信道状态信息(channel state information,CSI)构建接收信号模型并对其相位进行修正;设计一种干扰抑制算法对墙面强反射信号进行抑制,并利用小波去噪对噪声干扰进行抑制;对子载波进行挑选并分别提取CSI在有无目标情况下的幅值和相位特征,在此基础上,利用支持向量机(support vector machine,SVM)构造目标有无检测分类器,从而实现穿墙目标检测。实验结果表明,提出的基于Wi-Fi穿墙雷达的目标检测方法准确率能达到85%以上。展开更多
Based on the statistical data of temperature and precipitation in Kangding City from 1960 to 2011, the variation characteristics of temperature and precipitation in nearly 50 years were studied. The results showed tha...Based on the statistical data of temperature and precipitation in Kangding City from 1960 to 2011, the variation characteristics of temperature and precipitation in nearly 50 years were studied. The results showed that in Kangding City, average temperature showed an increasing trend in nearly 50 years, which is consistent with global warming. Average temperature in Kangding City was stable from the 1960s to the 1990s but changed obviously in the 2000s. Precipitation in Kangding City tended to increase in nearly 50 years. Spring and summer precipitation increased synchronously, and autumn precipitation was five times more than winter precipitation.展开更多
Tourists are the subject of tourism activity,and it is conducive to promoting sustainable development of tourism destination by studying their behavior characteristics and tourism perception.Mugecuo Scenic Area in Kan...Tourists are the subject of tourism activity,and it is conducive to promoting sustainable development of tourism destination by studying their behavior characteristics and tourism perception.Mugecuo Scenic Area in Kangding City,Ganzi Tibetan Autonomous Prefecture,Sichuan Province is taken as research case,and visitors and managers in the scenic area are surveyed by using semi-structured interview method.Based on survey data,the research aims to put forward corresponding policy suggestions for sustainable development of Mugecuo Scenic Area by deeply analyzing tourists’ access to information of scenic area,tourists’ travel purpose,tourists’ satisfaction with services of scenic area and willingness to revisit.展开更多
Based on the statistical data of daily precipitation in 14 meteorological stations of Ganzi Prefecture from 1960 to 2011, the temporal variation characteristics of precipitation in Ganzi Prefecture in nearly 50 years ...Based on the statistical data of daily precipitation in 14 meteorological stations of Ganzi Prefecture from 1960 to 2011, the temporal variation characteristics of precipitation in Ganzi Prefecture in nearly 50 years were studied. The results showed that in Ganzi Prefecture, annual precipitation showed an increasing trend, and averaged 659 mm in nearly 50 years, mainly varying from 550 to 750 mm. In a year, precipitation was mainly distributed in summer and autumn, and the precipitation in summer and autumn accounted for 83% of annual precipitation. Seen from the interdecadal variation of annual precipitation, annual precipitation in Ganzi Prefecture showed an increasing trend in different decades in nearly 50 years. It continued to increase from the 1960s to the 1990s. It increased most greatly from the 1970s to the 1980s but decreased slightly from the 1990s to the 2000s.展开更多
Through exploring current outdoor tourism development of Ganzi Prefecture and its tourism development prospects, this study planned the pertinent outdoor tourism product system according to its background advantages. ...Through exploring current outdoor tourism development of Ganzi Prefecture and its tourism development prospects, this study planned the pertinent outdoor tourism product system according to its background advantages. Outdoor tourism development of Ganzi Prefecture helps to promote the development of its all-for-one tourism, enrich categories of local tourism products, enhance rural transformation and poverty-alleviation tourism development, and promote the sustainability of local tourism industry.展开更多
基金Supported by the Project of Sichuan Minzu College(XYZB14003)Project of Education Department of Sichuan Province,China(16ZB0365)
文摘Based on data of daily average temperature recorded by 29 meteorological observation stations in western Sichuan during 1961-2011,variation characteristics of temperature in western Sichuan in the past 50 years were analyzed. The results showed that average temperature in western Sichuan showed an increasing trend during 1961-2011,and the linear fitting growth rate of temperature was 0. 42 ℃/10 a. In the four seasons,average temperature also showed an increasing trend. Among the four seasons,temperature increased most significantly in summer and autumn,followed by winter,while temperature increase was weak in spring. During 1961-2011,average temperature in western Sichuan continued to grow from the 1960 s to the 21 stcentury.
基金Sponsored by School-level Project of Sichuan Minzu College(YZB18041SB)Project of Education Department of Sichuan Province,China(16ZB0365)
文摘Tourism impact research from a sustainable livelihood perspective is of great significance for improving peasant households’ livelihood, reducing the livelihood vulnerability of peasant households and promoting the sustainable development of rural tourist destinations. Jiaju Tibetan Village is a typical rural tourist destination relying on natural and humanistic tourism resources. Based on field investigation, this paper systematically analyzes the impact of tourism development on local peasant households’ livelihood. The research shows that:① after tourism development, the means of livelihood of peasant households there are more diversified, the structure of livelihoods changes, the number of peasant households engaged in tourism-related livelihood activities has increased significantly, and the number of peasant households engaged in traditional livelihood activities has been greatly reduced;② driven by the external development of rural tourism, peasant households choose reasonable means of livelihood based on their own attributes, and there are four types of peasant households with different combinations of livelihood activities and household characteristics, namely, labor-oriented peasant households, tourism-labor peasant households, tourism-specialized peasant households, and mixed peasant households. Under the influence of rural tourism development, peasant households’ livelihood has increased, and peasant’s livelihood vulnerability has decreased, especially the sustainability of the livelihood of rural tourism operators has increased.
文摘穿墙目标检测在安防、智能家居和应急救援等方面具有重要的应用前景。目前,基于Wi-Fi的穿墙目标检测方法需在检测区域内安装额外设备,或需对硬件进行复杂改动。针对上述问题,提出一种新颖的基于Wi-Fi穿墙雷达的移动目标检测系统WiTWR,在检测区域内无附加设备并无需对硬件进行任何改动的情况下,实现墙后无源移动目标检测。对接收信道状态信息(channel state information,CSI)构建接收信号模型并对其相位进行修正;设计一种干扰抑制算法对墙面强反射信号进行抑制,并利用小波去噪对噪声干扰进行抑制;对子载波进行挑选并分别提取CSI在有无目标情况下的幅值和相位特征,在此基础上,利用支持向量机(support vector machine,SVM)构造目标有无检测分类器,从而实现穿墙目标检测。实验结果表明,提出的基于Wi-Fi穿墙雷达的目标检测方法准确率能达到85%以上。
基金Supported by the Project of Education Department of Sichuan Province,China(16ZB0365)Project of Sichuan Minzu College(XYZB18041SB)
文摘Based on the statistical data of temperature and precipitation in Kangding City from 1960 to 2011, the variation characteristics of temperature and precipitation in nearly 50 years were studied. The results showed that in Kangding City, average temperature showed an increasing trend in nearly 50 years, which is consistent with global warming. Average temperature in Kangding City was stable from the 1960s to the 1990s but changed obviously in the 2000s. Precipitation in Kangding City tended to increase in nearly 50 years. Spring and summer precipitation increased synchronously, and autumn precipitation was five times more than winter precipitation.
基金Sponsored by School-level Project of Sichuan Minzu College(XYZB18041SB)Project pf Sichuan Provincial Education Department(16ZB0365)
文摘Tourists are the subject of tourism activity,and it is conducive to promoting sustainable development of tourism destination by studying their behavior characteristics and tourism perception.Mugecuo Scenic Area in Kangding City,Ganzi Tibetan Autonomous Prefecture,Sichuan Province is taken as research case,and visitors and managers in the scenic area are surveyed by using semi-structured interview method.Based on survey data,the research aims to put forward corresponding policy suggestions for sustainable development of Mugecuo Scenic Area by deeply analyzing tourists’ access to information of scenic area,tourists’ travel purpose,tourists’ satisfaction with services of scenic area and willingness to revisit.
基金Supported by the Project of Education Department of Sichuan Province,China(16ZB0365)Project of Sichuan Minzu College(XYZB18041SB)
文摘Based on the statistical data of daily precipitation in 14 meteorological stations of Ganzi Prefecture from 1960 to 2011, the temporal variation characteristics of precipitation in Ganzi Prefecture in nearly 50 years were studied. The results showed that in Ganzi Prefecture, annual precipitation showed an increasing trend, and averaged 659 mm in nearly 50 years, mainly varying from 550 to 750 mm. In a year, precipitation was mainly distributed in summer and autumn, and the precipitation in summer and autumn accounted for 83% of annual precipitation. Seen from the interdecadal variation of annual precipitation, annual precipitation in Ganzi Prefecture showed an increasing trend in different decades in nearly 50 years. It continued to increase from the 1960s to the 1990s. It increased most greatly from the 1970s to the 1980s but decreased slightly from the 1990s to the 2000s.
基金Sponsored by Project of Sichuan Minzu College(YZB18041SB)。
文摘Through exploring current outdoor tourism development of Ganzi Prefecture and its tourism development prospects, this study planned the pertinent outdoor tourism product system according to its background advantages. Outdoor tourism development of Ganzi Prefecture helps to promote the development of its all-for-one tourism, enrich categories of local tourism products, enhance rural transformation and poverty-alleviation tourism development, and promote the sustainability of local tourism industry.
