PurposeThe purpose of this study is to analyze Chinese tourists' perceptions toward the 2010 World Expo and the impact of a mega event on the host city and visitor satisfaction.Design/methodology/approachGuided by the conceptualization of hosting special events for destination branding, this study examines empirically tourists' perceptions and experiences of the 2010 Shanghai World Expo and the host city. Ten hypotheses were tested using SEM to identify and analyze the factors and relationships that influence mega events and host cities.FindingsData collected from 600 tourists who visited the 2010 Shanghai World Expo provide support for the proposed model. The empirical test provides support for eight of the ten hypotheses and it reveals that the hosting of the World Expo had significant positive impact on Shanghai but not vice versa, and the Chinese tourists exhibited loyalty to the host city.Research limitations/implicationsUsing a moving event such as Expo, the Shanghai brand is simplified. The sample includes only domestic tourists and future research should include an international sample for comparison.Practical implicationsThe results help in identifying and managing the factors that contribute positively to the host destination brand when hosting mega events.Originality/valueThis study is the first attempt to empirically test the conceptual framework of leveraging a mega event for enhancing the host destination brand by using the 2010 Shanghai Expo as a case study. It validates that the strategic fit between the event and host city, community support and event quality are essential in enhancing host destination brand and tourist loyalty.
National critical infrastructure is a typical complex system with the characteristics of self-organized criticality. In this paper, we firstly analyze the basic concepts of national critical infrastructure and the associated complex system characteristics, and then construct the model of national critical infrastructure based on complex system theory. This model abstracts the nodes of national critical infrastructure network and their connectivity relationships, and supports the measurements of national critical infrastructure's attributes, therefore reflects the dynamics of national critical infrastructure. The occurrence and propagation mechanism of national critical infrastructure's cascade failure behavior is analyzed based on this model, which preliminary validates effectiveness of the proposed model.
Several types of lithium halide-containing Li 4 SiO 4 sorbents were prepared via sacrificial carbon template technology to overcome the typical kinetic limitations under low CO 2 partial pressures. The synthesized samples were characterized by XRD (X-ray diffraction), SEM (scanning electron microscopy), N 2 adsorption, XPS (X-ray photoelectron spectroscopy), and thermogravimetric analysis. The results reveal that among three lithium halide-containing Li 4 SiO 4 sorbents, the highest uptakes were obtained by LiF addition. Different amounts of LiF addition also significantly affected the intrinsic properties and absorption characteristics of the Li 4 SiO 4 sorbents. When the addition amount was 10 mol %, Li and F were incorporated into the Li 4 SiO 4 structure to form a solid solution. Such features generated smaller crystallite sizes and particle sizes as well as a species of Li 2 O on Li 4 SiO 4 surface, which was responsible for the maximum uptake capacity of 36.2 wt % at 575 °C under 15 vol % CO 2 . This value is the largest uptake reported in the literature to date. Moreover, a high capacity was maintained over eight sorption/desorption cycles.
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