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To better understand what inhibits people from participating in collaborative consumption, this paper aims to develop research models of users and non-users to examine the relationship between perceived risks and intentions to use peer-to-peer (P2P) accommodation. Moreover, differences of risk perceptions and behavioral intentions between P2P accommodation users and non-users were identified.

The method of convenience sampling was used to collect data. Excluding the invalid questionnaires, 520 were kept for further analysis. In this paper, SPSS and partial least squares (PLS) were used to analyze the data.

The findings highlighted the important role of perceived risks in determining tourists’ intentions to use P2P accommodation. The results showed that non-users have higher perceived risks in regards to all four risk dimensions (psychological risk, physical risk, performance risk and social risk), and they also have significantly lower behavioral intentions to use P2P accommodation than the users. For users, only the psychological risk has significant negative effects on behavioral intentions, while for non-users, both psychological and physical risks are important inhibitors.

This paper contributes to a better understanding of the antecedents that influence consumers’ participation in collaborative consumption in the P2P accommodation domain. Second, it extends the literature on perceived risk by discussing users and non-users in this market. Finally, this research provides insights into the P2P accommodation market in China, which enables online travel platforms to develop targeted marketing strategies.

为更好了解协同消费的顾客参与，本论文构建了使用者和非使用者模型来检验其感知风险和使用P2P住宿行为意向的关系。此外，本论文也试图探讨使用者和非使用者在感知风险和行为意向方面的差异。

研究样本采取方便抽样方式，共回收520份有效问卷。本论文采用SPSS和偏最小二乘法（PLS）分析数据。

研究结果凸显了感知风险对影响游客使用P2P住宿的重要作用。P2P 住宿非使用者不仅有更高的感知风险（表现在四个风险维度上：心理风险，身体风险，性能风险和社会风险），而且比使用者有更低的使用意向。对于使用者来说，只有心理风险对行为意向有显著地影响作用；对于非使用者，心理风险和身体风险都是影响行为意向的因素。

本论文对于阻碍P2P住宿的参与因素进行了深入探讨。其次，本论文通过讨论使用者和非使用者的差异拓展了感知风险相关研究。最后，本论文研究了P2P住宿业在中国的市场情况，为在线旅行平台开发目标市场策略提供了启示。

P2P 住宿，Airbnb, 感知风险，使用者和非使用者，行为意向

Ci‐après, nous publions — le programme du 21e Congrès de l'AIEST — Association internationale d'experts scientifiques du tourisme,

The concept and practice of e-services has become essential in business transactions. Yet there are still many organizations that have not developed e-services optimally. This is especially relevant in the context of Indonesian Airline companies. Therefore, many airline customers in Indonesia are still in doubt about it, or even do not use it. To fill this gap, this study attempts to develop a model for e-services adoption and empirically examines the factors influencing the airlines customers in Indonesia in using e-services offered by the Indonesian airline companies. Taking six Indonesian airline companies as a case example, the study investigated the antecedents of e-services usage of Indonesian airlines. This study further examined the impacts of motivation on customers in using e-services in the Indonesian context. Another important aim of this study was to investigate how ages, experiences and geographical areas moderate effects of e-services usage.

The study adopts a positivist research paradigm with a two-phase sequential mixed method design involving qualitative and quantitative approaches. An initial research model was first developed based on an extensive literature review, by combining acceptance and use of information technology theories, expectancy theory and the inter-organizational system motivation models. A qualitative field study via semi-structured interviews was then conducted to explore the present state among 15 respondents. The results of the interviews were analysed using content analysis yielding the final model of e-services usage. Eighteen antecedent factors hypotheses and three moderating factors hypotheses and 52-item questionnaire were developed. A focus group discussion of five respondents and a pilot study of 59 respondents resulted in final version of the questionnaire.

In the second phase, the main survey was conducted nationally to collect the research data among Indonesian airline customers who had already used Indonesian airline e-services. A total of 819 valid questionnaires were obtained. The data was then analysed using a partial least square (PLS) based structural equation modelling (SEM) technique to produce the contributions of links in the e-services model (22% of all the variances in e-services usage, 37.8% in intention to use, 46.6% in motivation, 39.2% in outcome expectancy, and 37.7% in effort expectancy). Meanwhile, path coefficients and t-values demonstrated various different influences of antecedent factors towards e-services usage. Additionally, a multi-group analysis based on PLS is employed with mixed results. In the final findings, 14 hypotheses were supported and 7 hypotheses were not supported.

The major findings of this study have confirmed that motivation has the strongest contribution in e-services usage. In addition, motivation affects e-services usage both directly and indirectly through intention-to-use. This study provides contributions to the existing knowledge of e-services models, and practical applications of IT usage. Most importantly, an understanding of antecedents of e-services adoption will provide guidelines for stakeholders in developing better e-services and strategies in order to promote and encourage more customers to use e-services. Finally, the accomplishment of this study can be expanded through possible adaptations in other industries and other geographical contexts.

Aux experts axés trop exclusivement sur l'économie, le Professeur Hunziker rappelait opportunément que «l'homme lui‐même est le vrai centre du tourisme» et que la fonction économique du tourisme n'est que «subsidiaire», alors que «sa mission humanitaire» est «éminente».

Le tourisme a été considéré de préférence sous le double aspect professionnel et publicitaire. Cette manière de voir pouvait se justifier aussi longtemps que les échanges touristiques étaient basés sur le régime de la libre circulation, du «laisser‐passer». En pratiquant la politique de la porte ouverte, les pays européens assuraient au tourisme un développement normal qui s'est traduit par un accroissement constant de leur revenu national.

La Revue de Tourisme a déjà consacré tout un numéro à ce sujet (n° 3/1950). Si nous y revenons, c'est surtout pour les motifs suivants: D'abord, le sujet en soi est à peu près inépuisable. Ensuite, il s'agit d'en donner maintenant une vue d'ensemble et d'en examiner d'autres aspects. Enfin, l'occasion nous en est directement fournie par la publication récente de l'ouvrage cité ci‐après de M. J. G. Ramaker (Tourisme et transports) et par l'exposé que, sous le même titre, l'auteur de ces lignes a fait le 11 février 1955 dans un cours d'instruction organisé par la Swissair à Zurich pour son personnel, avec le concours de l'Ecole suisse des hautes études économiques et administratives de Saint‐Gall.

This chapter provides information on the development of Vietnamese education under the influence of global forces based on the analysis of relevant education research and policies using Wolhuter’s frameworks. In the process of coming up with ways to develop education in the face of different influences of globalization, besides having reactions with patterns commonly found in countries around the world, Vietnam also has responses that reflect its own political, sociocultural and economic characteristics. The state still plays a controlling role in education at all levels and many culture-related features that have existed throughout the country’s history have hardly changed, namely aspects related to teachers, learners and teaching and learning methods. To sustain its education in the globalized era, Vietnam must make more efforts in various aspects such as the link between education and employment, the logic of education objectives, the feasibility and appropriateness of curricula, quality of education, especially of higher education and equality in education for underprivileged groups.

Pour bon nombre de pays d'économie attardée, mais favorisés par des conditions climatiques attrayantes, le tourisme apparaît de plus en plus comme une des chances décisives et un des principaux facteurs de la croissance nécessaire. Quelques réussites récentes, au moins sur le plan statistique, sont fort spectaculaires et la floraison simultanée, en de nombreux points du globe, d'ambitieux programmes touristiques ne manque pas d'impressionner. Pourtant, le jugement porté sur les effets économiques d'un tel choix demeure à la fois plus prudent et plus nuancé. La question essentielle peut ainsi être posée: les économies en voie de développement sont‐elles capables de retenir et d'utiliser sur place les revenus, parfois considérables, distribués par les touristes étrangers? Et ces revenus sont‐ils susceptibles de jouer un rôle décisif dans le «décollage» économique, en soutenant les objectifs nationaux essentiels, en ne détournant pas le pays des priorités et des contraintes de la croissance?

The purpose of this study is to solve the problems of poor stability and high energy consumption of the dynamic window algorithm (DWA) for the mobile robots, a novel enhanced dynamic window algorithm is proposed in this paper.

The novel algorithm takes the distance function as the weight of the target-oriented coefficient, and a new evaluation function is presented to optimize the azimuth angle.

The jitter of the mobile robot caused by the drastic change of angular velocity is reduced when the robot is closer to the target point. The simulation results show that the proposed algorithm effectively optimizes the stability of the mobile robot during operation with lower angular velocity dispersion and less energy consumption, but with a slightly higher running time than DWA.

A novel enhanced dynamic window algorithm is proposed and verified. According to the experimental result, the proposed algorithm can reduce the energy consumption of the robot and improves the efficiency of the robot.

The purpose of this study is to assess the spatiotemporal patterns of future meteorological drought in the Yellow River Basin under different representative concentration pathway (RCP) scenarios.

Delta method is used to process the future climate data of the global climate models, then analyzed the spatiotemporal variation trend of drought in the Yellow River Basin based on standardized precipitation evaporation index (SPEI) under four RCP scenarios.

This research was funded by the National Natural Science Foundation of China (41901239), Soft Science Research Project of Henan Province (212400410077, 192400410085), the National Key Research and Development Program of China (2016YFA0602703), China Postdoctoral Science Foundation (2018M640670) and the special fund of top talents in Henan Agricultural University (30501031).

This study can provide support for future meteorological drought management and prevention in the Yellow River Basin and provide a theoretical basis for water resources management.