Ecotourism requires the harmony of all factors involved in tourism system for a multilateral benefit. Based on such cognition, a concept of deep ecotourism development is put forward which includes two connotations: o...Ecotourism requires the harmony of all factors involved in tourism system for a multilateral benefit. Based on such cognition, a concept of deep ecotourism development is put forward which includes two connotations: on the one hand, it should give prominence to the display of the eco-culture of the tourist destination and tourists' eco-experience, in which way the development behavior on the tourist destination and the tourists' behavior will be regulated; on the other hand, it implies the deep harmony among tourist entrepreneurs and tourists, the local governments and the local residents, as well as tourist activities and the ecological environment in the tourism development for the multilateral benefit of every element involved and sustainable tourism development. The common sense is that the degrees in a certain tourism destination will differ and that consequently four levels of ecotourism are divided - very shallow ecotourism, shallow ecotourism, deep ecotourism and very deep ecotourism. To move shallow ecotourism toward deep one, two models of "four subjects and two wings" and "connecting the two wings" of deep ecotourism development system are introduced to make ecotourism industry favorable to the display of eco-culture and the sustainable development of the destination community. With the two models, a case study of ecotourism development in Louguantai National Forest Park was made as a demonstration. The ultimate purpose is to build an ideal new Shangri-La.展开更多
In recent years,Henan sticks to the points of General Secretary Xi Jinping,makes full use of its rich resources and relations,makes efforts to deepen friendship with people around the world,promotes relations with for...In recent years,Henan sticks to the points of General Secretary Xi Jinping,makes full use of its rich resources and relations,makes efforts to deepen friendship with people around the world,promotes relations with foreign countries,pushes展开更多
目的开发一种深度学习系统用于成人发育性髋关节发育不良(Developmental dysplasia of the hip,DDH)患者的Crowe分型辅助诊断,并且分析该系统对于帮助临床医学生掌握DDH分型的可行性。方法纳入149例X线片训练集、42例测试集以及21例验证...目的开发一种深度学习系统用于成人发育性髋关节发育不良(Developmental dysplasia of the hip,DDH)患者的Crowe分型辅助诊断,并且分析该系统对于帮助临床医学生掌握DDH分型的可行性。方法纳入149例X线片训练集、42例测试集以及21例验证集,分割盆骨、提取DDH局部图像块,将金标准结果与医学生、AI辅助医学生评估结果进行比较。结果测试集共纳入42例,其中女性30例,男性12例,年龄(69±12)岁,涉及发育不良髋关节67侧(左30侧,右37侧)。AI、医学生、AI辅助医学生评估结果与金标准的相关性为0.906[95%CI(0.850,0.941)]、0.823[95%CI(0.726,0.887)]、0.886[95%CI(0.821,0.929)];准确率分别为0.87、0.78、0.88;精确度分别为0.88、0.83、0.89;召回率分别为0.87、0.78、0.88;F1值分别为0.87、0.80、0.88。混淆矩阵和条件概率结果显示,预测准确率Ⅰ型DDH三组分别为0.98、0.88、0.96,Ⅱ型DDH三组分别为0.40、0.20、0.40,Ⅲ型DDH三组分别为0.56、0.67、0.78;Ⅳ型DDH三组分别为0.88、0.75、0.88。结论深度学习辅助诊断系统可以有效提高医学生对于DDH分型的评估能力,可作为医学生学习掌握DDH影像诊断的培训工具。展开更多
文摘Ecotourism requires the harmony of all factors involved in tourism system for a multilateral benefit. Based on such cognition, a concept of deep ecotourism development is put forward which includes two connotations: on the one hand, it should give prominence to the display of the eco-culture of the tourist destination and tourists' eco-experience, in which way the development behavior on the tourist destination and the tourists' behavior will be regulated; on the other hand, it implies the deep harmony among tourist entrepreneurs and tourists, the local governments and the local residents, as well as tourist activities and the ecological environment in the tourism development for the multilateral benefit of every element involved and sustainable tourism development. The common sense is that the degrees in a certain tourism destination will differ and that consequently four levels of ecotourism are divided - very shallow ecotourism, shallow ecotourism, deep ecotourism and very deep ecotourism. To move shallow ecotourism toward deep one, two models of "four subjects and two wings" and "connecting the two wings" of deep ecotourism development system are introduced to make ecotourism industry favorable to the display of eco-culture and the sustainable development of the destination community. With the two models, a case study of ecotourism development in Louguantai National Forest Park was made as a demonstration. The ultimate purpose is to build an ideal new Shangri-La.
文摘In recent years,Henan sticks to the points of General Secretary Xi Jinping,makes full use of its rich resources and relations,makes efforts to deepen friendship with people around the world,promotes relations with foreign countries,pushes
文摘目的开发一种深度学习系统用于成人发育性髋关节发育不良(Developmental dysplasia of the hip,DDH)患者的Crowe分型辅助诊断,并且分析该系统对于帮助临床医学生掌握DDH分型的可行性。方法纳入149例X线片训练集、42例测试集以及21例验证集,分割盆骨、提取DDH局部图像块,将金标准结果与医学生、AI辅助医学生评估结果进行比较。结果测试集共纳入42例,其中女性30例,男性12例,年龄(69±12)岁,涉及发育不良髋关节67侧(左30侧,右37侧)。AI、医学生、AI辅助医学生评估结果与金标准的相关性为0.906[95%CI(0.850,0.941)]、0.823[95%CI(0.726,0.887)]、0.886[95%CI(0.821,0.929)];准确率分别为0.87、0.78、0.88;精确度分别为0.88、0.83、0.89;召回率分别为0.87、0.78、0.88;F1值分别为0.87、0.80、0.88。混淆矩阵和条件概率结果显示,预测准确率Ⅰ型DDH三组分别为0.98、0.88、0.96,Ⅱ型DDH三组分别为0.40、0.20、0.40,Ⅲ型DDH三组分别为0.56、0.67、0.78;Ⅳ型DDH三组分别为0.88、0.75、0.88。结论深度学习辅助诊断系统可以有效提高医学生对于DDH分型的评估能力,可作为医学生学习掌握DDH影像诊断的培训工具。
