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莫道桑榆晚:低龄银发消费的群像分类与发展审视
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作者 刘凯强 范和生 《甘肃社会科学》 CSSCI 北大核心 2024年第4期92-101,共10页
人口老龄化是人类社会发展的共同趋势,也是今后我国较长时期内的基本国情之一。在老龄化社会中推进银发消费,不仅是满足老年群体对晚年美好生活向往的现实需要,更是化身为经济社会高质量发展的新式动能。低龄老人既包含一般银发消费者... 人口老龄化是人类社会发展的共同趋势,也是今后我国较长时期内的基本国情之一。在老龄化社会中推进银发消费,不仅是满足老年群体对晚年美好生活向往的现实需要,更是化身为经济社会高质量发展的新式动能。低龄老人既包含一般银发消费者的共性,又因其初老特征集中呈现出关系型、保养型、比照型、认同型四类消费群像。客观审视低龄银发族在“物质-身体”支持下的观念切换、“家庭-社会”责任脱绑下的有闲允许、“同质群体”暗比下的社交炫示、“渠道-情境”共策下的自悦支出等驱动合力作用后的消费实践,有利于各方精准围绕低龄老人真实消费诉求和低龄银发市场潜存梗阻,有的放矢地深耕国内银发消费新蓝海,实现“养老”到“享老”的经济、社会、民生效益三维统一。 展开更多
关键词 低龄银发消费 群像分类 多维驱动 发展审视
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Color image segmentation using mean shift and improved ant clustering 被引量:3
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作者 刘玲星 谭冠政 M.Sami Soliman 《Journal of Central South University》 SCIE EI CAS 2012年第4期1040-1048,共9页
To improve the segmentation quality and efficiency of color image,a novel approach which combines the advantages of the mean shift(MS) segmentation and improved ant clustering method is proposed.The regions which can ... To improve the segmentation quality and efficiency of color image,a novel approach which combines the advantages of the mean shift(MS) segmentation and improved ant clustering method is proposed.The regions which can preserve the discontinuity characteristics of an image are segmented by MS algorithm,and then they are represented by a graph in which every region is represented by a node.In order to solve the graph partition problem,an improved ant clustering algorithm,called similarity carrying ant model(SCAM-ant),is proposed,in which a new similarity calculation method is given.Using SCAM-ant,the maximum number of items that each ant can carry will increase,the clustering time will be effectively reduced,and globally optimized clustering can also be realized.Because the graph is not based on the pixels of original image but on the segmentation result of MS algorithm,the computational complexity is greatly reduced.Experiments show that the proposed method can realize color image segmentation efficiently,and compared with the conventional methods based on the image pixels,it improves the image segmentation quality and the anti-interference ability. 展开更多
关键词 color image segmentation improved ant clustering graph partition mean shift
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