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基于图像学理论进一步阐释了旅游目的地形象的内涵和形成过程,提出了旅游目的地形象清晰度概念,以及形象清晰度测评指标体系,并以老牌旅游城市西安为案例地,对不同群体旅游者心目中的西安旅游形象清晰度进行了测评.研究表明:(1)旅游目的地形象是旅游者通过视觉、听觉等感觉器官,主动或被动地接收旅游目的地各种旅游信息,并在大脑已有的认知水平下,对所获取的旅游信息进行组合、拼接以及评价形成的目的地心理认知"图像".(2)旅游者个体之间和群体之间均存在目的地形象清晰度差异.旅游者了解目的地的信息类型越多样、内容越丰富,目的地形象清晰度越高.反之,则清晰度越低.旅游目的地形象清晰度可划分为要素清晰度、维度清晰度和整体清晰度3种类型.(3)旅游目的地形象清晰度与O-D对距离有关.(4)旅游目的地形象清晰度可以用旅游目的地形象描述词汇的频率、多样性指数及词汇网络中心性指标等进行测评. 相似文献
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Tafeng Hu Xuxiang Li Jungang Dong Bo Rong Zhenxing Shen Junji Cao Shun-Cheng Lee Judith C. Chow John G. Watson 《中国颗粒学报》2006,4(6):346-351
Indoor dusffall samples were collected in Pit 1 and Pit 2 of Emperor Qin's Terra-cotta Warriors and Horses Museum in Xi'an, Shaanxi Province, China. The morphological and elemental analysis for long-term (〉10 years) and short-term (~0.5 year) dusffall particles and lacquer pieces on the faces of partly assembled warriors were performed with scanning electron microscopy with energy dispersive X-ray spectrometer (SEM/EDX). The results showed that the majority of dusffall samples appeared to be composed of mineral dust particles, fly ash, and biological particles with different elemental compositions. Most of the mineral particles had irregular shapes with smooth edges. Small floccules of calcium sulfate were more frequently observed in long-term dusffall samples than in short-term samples, implying a progressive chemical reaction between continuous dusffall particles and atmospheric sulfur dioxide. Crystals of calcium sulfate were also found near pits on both inner and outer surfaces of lacquer pieces, revealing an acid chemical reaction between sulfur dioxide and lacquer material as the cause of the formation of erosion pits and cracks on surface of lacquer pieces. 相似文献
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有关符号感知下的旅游体验真实性研究已引起广泛关注,然而基于编码者视角的符号研究并不能完全认识符号的多元属性,也无法完全理解体验真实性的意义。以西安回民街为例,结合旅游商业化、旅游符号和体验真实性的相关理论,从游客视角对民族文化旅游街区的商业化符号进行识别和解读,并对旅游商业化符号感知与体验真实性之间的关系进行定量分析。结果表明,可识别的回民街商业化符号包括旅游商业环境符号、旅游空间环境符号、社会经营管理符号、商业及商品经营符号、现代化感知符号和地方认知符号。其中,地方认知符号感知对体验真实性有显著正向作用,其余商业化符号对体验真实性无显著抑制作用。 相似文献
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哺乳动物细胞胞质分裂过程中伴随着一系列形态学改变,随着分裂沟不断收缩,形成连接两
个子细胞的细胞间桥. 间桥不断拉长、变细,直至断裂、生成两个子细胞. 采用细胞力学
和形态学测量及分析方法,通过施加肌球蛋白II抑制剂,定量研究了NRK细胞间桥变细动力
学; 采用细胞免疫荧光技术, 检测了早期胞质分裂肌动蛋白的分布,揭示肌球蛋白II缺失细
胞胞质分裂可能的机制. 结果表明:施加肌球蛋白II抑制剂的NRK细胞, 其整体形态学和细胞
间桥形态学曲线明显不同于0.3%DMSO组. 根据流体力学特性和所测量的力学参数对曲线
进行模拟发现,表面张力对肌球蛋白II抑制组细胞的间桥动力学曲线轨迹影响很大. 研究结
果提示由细胞力学特性决定的拉普拉斯压力和细胞运动共同参与了肌球蛋白II缺失细胞胞
质分裂的调节. 相似文献
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Huizheng Che Xiaoye Zhang Yang Li Zijiang Zhou Zhenlin Chen 《中国颗粒学报》2006,4(6):327-329
Based on daily visibility data obtained from 1980-2002 and air pollution index data from 2001-2004 in Xi'an, long-term variations and relationships for daily horizontal extinction coefficient and mass concentration of PM10 have been evaluated. A decreasing trend was found in horizontal extinction coefficient during the past 23 years, with higher values observed in 1980s relative to 1990s, and the highest and lowest values in winter and summer, respectively. Significant correlation and similar seasonal variations existed between horizontal extinction coefficient and PM10 concentration, suggesting the high influence of PM10 to the visibility drop at a site in the Guanzhong Plain of central China during the past two decades. 相似文献