Tourists’ Perceptions of London,United Kingdom (UK), as a Safe Host City During the 2012 Olympic Games

The Olympic Games 2012 provided the host city London with the opportunity to showcase its cultural diversity and world-class tourist attractions. However, the build-up to the world’s largest sporting event attracted considerable negative publicity primarily related to security at the Games, namely terrorism and its potential to disrupt the spectacle. Intercept interviews were carried out with 354 spectators during the Games at public viewing sites and key tourist attractions to elicit the perceptions of London as a safe host city. The findings demonstrate that visitors to the Olympics perceived London to be safe, in terms of both crime and terrorism, with positive consequences for their future plans to revisit London. Ultimately, a better understanding of spectators’ perceptions of safety and security of the Games can help improve communication messages to combat misperceptions in an effort to increase tourist arrivals to host cities during the staging of mega-events and after such events.     

Future airport terminals: New technologies promise capacity gains

The changing dynamics of passenger processes in future airport terminals resulting from pressures from both the demand and supply side are analyzed in this paper. Short and long term (beyond 2020) developments are studied following technology advances and business plans of airlines and airports. Key technologies affecting the central passenger processing functions include identity management and biometrics, Near Field Communications, Big Data analytics and smartphone applications. A simulation model is developed and used to assess the impact of forthcoming changes on the airport's departure hall. Lisbon Portela airport is used as case study. It is shown that passenger process times at the check-in and security checkpoints are significantly reduced, due to the introduction of passenger facilitation processes, under a range of behavioral, technological and policy uncertainties. The most salient implication of these reductions is the quantified capacity gains in the building which question the need for terminal expansion.     

吉林油田水平井重复压裂技术研究与现场应用

水平井重复压裂技术是低渗透油田增加单井产量、确保油田稳产、提高经济效益的关键手段。水平井重复压裂技术经过现场试验后,取得了较好的应用效果。截至08年底水平井重复压裂技术在FY油田现场施工12井次,措施成功率100%,取得了很好的增油效果。现场实践表明,水平井重复压裂技术为低渗透油田开发的增产稳产提供了重要的技术措施。     

Towards Understanding User Perceptions of a Tourist-based Environmental Monitoring System: An Exploratory Case Study

This paper examines user perceptions of a tourist-based environmental monitoring system which supports park visitor engagement with the environmental monitoring of specific sites within two National and one Regional Park in Victoria, Australia. The system allows park visitors (tourists) to actively participate in the care and management of the park by voluntarily contributing to web-based photographic records. The primary objective of this exploratory case study research is to identify who the tourist users are, their perceptions of the system, their motivation for using it, and the benefits that they perceive are derived from using the system. The study found that respondents indicated a strong concern for the environment and appreciated the simplicity of the system and the on-going connection it provides to the park-management process. Importantly, respondents found the system to be a valuable source of engagement with the environmental monitoring and management process.     

INVESTIGATING DIFFERENCES IN ANTECEDENTS TO VALUE BETWEEN FIRST‐TIME AND REPEAT FESTIVAL‐GOERS

This study aimed to capture the underlying quality dimensions (value antecedents) that distinguish between first‐timers and repeaters and that cultivate festival loyalty. Structural relationships were analyzed across the quality dimensions, value, and loyalty for first‐time and repeat visitors. Structural equation modeling revealed that program and convenient facilities alone were antecedents to value for repeaters, whereas food and souvenir, as well as program and convenient facilities, were value antecedents for first‐timers. Specifically, repeat visitors showed stronger relationships on program value and convenient facility value than did first‐time visitors. On the other hand, first‐time visitors associated more strongly with relationships on food value and souvenir value than did repeat visitors. This distinction resulted in a stronger value‐loyalty relationship for repeat visitors than for first‐time visitors. These findings contribute to the understanding of festival‐attendee behavior and thus, provide researchers and practitioners with insights into how to design a festival in such a way that promotes repeat visitors.     

Rethinking authenticity and tourist identity: expressions of territoriality and belonging among repeat tourists on the Greek island of Symi

This paper approaches the subject of tourist identity from an anthropological perspective, arguing for a culturally contextualized analysis that focuses on the interactive and processual nature of these constructions. Specifically, it explores the processes by which repeat tourists on the Greek island of Symi construct their identities as tourists in relation to the place of their vacation experience, local residents and other tourists. It highlights the competitive and often antagonistic way in which these tourists – drawing on ideas about authenticity and demonstrating sympathy with local concerns – seek to incorporate the island as an aspect of their own personal identities and, similarly, create a form of ‘local’ identity in Symi. The picture of tourists that emerges in this case study contrasts sharply with standard analytical formulations that portray tourists as transient and liminal figures, defined almost exclusively by their vacation preferences and experiences, and constituting a category of people that is clearly distinguishable (practically and ideologically) from local residents. As a consequence, it argues for an approach to tourist identity that seeks out linkages between tourists and locals, and which looks more broadly at the views and experiences of tourists beyond the time and space of the vacation.     

浅谈低压配电系统的选择

我国低压配电系统常见的有IT、TT、TN-C、TN-S、TN-C-S几类系统。当电气设备因绝缘损坏而发生漏电或击穿时,平时不带电的金属外壳及与之相连接的其他金属部分便带有电压。人体触及这些意外的带电部分时,就可能发生触电事故。减少或避免这类触电事故的技术措施有保护接地、保护接零、装设漏电保护器等。     

一种基于迭代计算的短波有效压制功率估计新方法

短波压制式干扰设计中,基于链路损耗估算的有效压制功率估计误差大。针对此问题, 提出了一种利用短波通信的自适应调制机制和自动重传请求机制,通过迭代干扰实现有效压 制功率精确计算的方法。首先推导了有效压制功率和有效压制系数之间的线性关系,然 后给出了针对自适应调整和自动重传请求的迭代干扰的算法原理,最后给出了半功率迭代计 算的详细算法流程及计算机仿真结果。仿真结果表明,新算法靠有限次迭代干扰实现了有效 压制功率的精确计算,相比传统的链路估算方法,能够快速地为干扰系统提供准确的发射功 率值,将大大提高干扰效率和安全性。     

基于创新扩散的快速消费品品牌生命周期研究

品牌生命周期研究主要集中于模型构建、参数估计、阶段划分及相应营销策略研究等方向。本文基于创新扩散理论,在考虑品牌重复购买因素并结合品牌形成机理的基础上,提出快速消费品品牌生命周期模型;并应用非线性最小二乘法进行参数估计,且通过实例对模型进行检验;根据首次购买和重复购买的变化趋势,提出了较为科学合理的阶段划分方法,从而为企业做出营销决策提供理论依据。     

Singular value decomposition in cointegration analysis: a note regarding the difference stationary series

Many methods and techniques have been developed gradually to compute cointegration vectors. We present here a comparatively simple method for computing the matrix of cointegrating vectors, by applying singular value decomposition. With this method, one can easily accommodate in the cointegrating vectors any deterministic factors, such as a dummy, apart from the constant term and the trend. Besides the errors corresponding to the finally selected cointegrating vector have the property of minimum variance. It is noted that this procedure is not mentioned in the relevant literature. Additionally, a sequential technique is introduced, for determining the order of integration for a given series. With this procedure one can directly detect whether the differencing process produces a stationary series or not, since it seems to be a common belief that differencing a variable (one or more times) we will always get a stationary series [Harris, R.: Using Cointegration Analysis in Econometric Modelling. Prentice Hall, London (1995)]. It will be seen that this is not necessarily the case.