Semitractability of optimal stopping problems via a weighted stochastic mesh algorithm

In this paper, we propose a Weighted Stochastic Mesh (WSM) algorithm for approximating the value of discrete‐ and continuous‐time optimal stopping problems. In this context, we consider tractability of such problems via a useful notion of semitractability and the introduction of a tractability index for a particular numerical solution algorithm. It is shown that in the discrete‐time case the WSM algorithm leads to semitractability of the corresponding optimal stopping problem in the sense that its complexity is bounded in order by with being the dimension of the underlying Markov chain. Furthermore, we study the WSM approach in the context of continuous‐time optimal stopping problems and derive the corresponding complexity bounds. Although we cannot prove semitractability in this case, our bounds turn out to be the tightest ones among the complexity bounds known in the literature. We illustrate our theoretical findings by a numerical example.     

Challenges faced by world tourism cities – London’s perspective

World tourism cities perform multiple functions and exhibit various characteristics that influence tourism development within their boundaries. They are the main gateway for tourists visiting a country and their success has a direct impact on the visitor economy of that destination. London, the focus of this research, has been one of the world’s top tourism cities for many years, and a key gateway for domestic and international visitors. But despite the important role tourism plays in the economy of the city, there is limited research on the development of this activity in the capital. Using London as an exploratory case study, this paper contributes to better understanding the challenges faced by policy makers when planning and managing tourism in world cities. The adopted research method offers the advantage of gathering insightful information using multiple data collection techniques. Examining this new evidence contributes to expanding the knowledge on the particularities of tourism development in one of the top world cities, which could help policy makers in their efforts to better prepare for potential challenges faced by these complex but important destinations.     

A contrast analysis of online hotel web service purchasers and browsers

Ever since the introduction of Internet technology to general business, websites have played an important role in the business and promotional efforts of hotels. However, the existing tourism and hospitality literature contains only a limited number of articles that examine the perceived importance of the different attributes of a hotel website. This paper reports a study that analyzed the different perceptions of specific hotel website attributes between online purchasers and browsers and between Western and Asian users. The empirical findings reveal a set of attributes that are the most important in developing effective hotel websites. The findings also indicate the necessity of designing English- and Chinese-language hotel websites differently, based on the significant differences in the responses obtained from these two groups of online users.     

mLearning as a softer visitor management approach for sustainable tourism

With increased visitation to protected natural areas over the last four decades, there is a need for implementation of effective visitor management strategies at these sites to mitigate visitor impacts. This study explores the application of mobile learning (mLearning) in environmental interpretation and visitor education within the context of conservation and sustainable tourism. Specifically, it proposes a conceptual framework for mLearning as a visitor management tool for sustainable tourism. Current developments and innovations in mobile broadband networks, smartphone technology, and mobile software applications present opportunities for the utilization of such mobile-driven applications in interpretive programs to encourage free-choice learning and mindful visitor experiences. If effectively implemented, such interpretive programs and mLearning applications can affect visitor perceptions, attitudes, and future intentions toward conservation and environmental protection.     

Examining the efficacy of self-classification approach in segmenting special-interest tourists: food tourism case

Self-classification is used as an a priori approach to tourist typology and market segmentation. However, skepticism still surrounds its ability to incorporate the multidimensionality of tourist behavior. This study seeks to empirically verify the efficacy of a single-item self-classification approach. The robustness of this self-classification measure is examined by comparing it to a data-driven multidimensional psychographic approach in terms of its ability to predict the behaviors of tourists toward food-related destination consumption. Results suggest that the single-item self-classification approach performs equally well as the psychographic approach in segmenting food-related consumption behaviors. The implications and limitations of this study are also discussed.     

A fuzzy comprehensive evaluation algorithm for analyzing electronic word-of-mouth

This study evaluates tourism experiences shared through electronic word-of-mouth (eWOM) across four Chinese attractions. The objective is to develop a framework for evaluating eWOM by constructing an indicator system and implementing an analytic hierarchy process with the use of a fuzzy comprehensive evaluation algorithm. This framework is achieved by mapping more than 6000 websites related to Chinese tourism attractions and filtering over 200,000 useful reviews to measure service performance. Results indicate that ecological–biological attractions failed to make tourists feel “very satisfied” in various aspects, such as overall evaluation, infrastructure, traffic, natural environment, and social environment. Overall, the study contributes by presenting a framework that can be adopted by tourism researchers and industry practitioners to understand tourist preferences and evaluate service performance to improve service quality.     

Identifying changes and trends in Hong Kong outbound tourism

Despite the numerous research endeavors aimed at investigating tourists’ preferences and motivations, it remains very difficult for practitioners to utilize the results of traditional association rule mining methods in tourism management. This research presents a new approach that extends the capability of the association rules technique to contrast targeted association rules with the aim of capturing the changes and trends in outbound tourism. Using datasets collected from five large-scale domestic tourism surveys of Hong Kong residents on outbound pleasure travel, both positive and negative contrasts are identified, thus enabling practitioners and policymakers to make appropriate decisions and develop more appropriate tourism products.     

Seasonal variability,land values and willingness–to–pay for a forward wheat contract with protein premiums and discounts

This article investigates the impact of a protein premiums and discounts system on the income stream from growing wheat. Based on a biological relationship between protein and yield in uncertain seasonal conditions, it shows that such a system reduces the expected level and variability of wheat income. It is subsequently argued, using a numerical analysis, that protein payments affect both the attraction to wheat growers of forward contracts and the value of land used for wheat. The nature of both of these impacts is related to the level of seasonal variability affecting the land. Consequently, wheat growers in the more unreliable regions of the wheatbelt may have been particularly disadvantaged by the system.     

An Initial Investigation of Integrating Innovation Diffusion Models for Drawing First‐time Visitors

Prior studies in the existing tourism literature have frequently emphasized the relatively expensive costs for drawing first‐time visitors. These studies, however, have largely failed to explain how to draw first‐time visitors to a destination. In other words, little was known regarding what destinations should do to attract first‐time visitors in an effective way. To provide more insights, this research investigated the impact of three diffusion models on attracting first‐time visitors. These models included an external influence model for impact of mass media, an internal influence model for impact of interpersonal communications, and a mixed model for impacts of both mass media and interpersonal communications. Assessing the model impact in a macroapproach for first‐time visitors to Hong Kong, empirical findings indicated that the mixed influence model provided the highest explanatory quality, with word‐of‐mouth being a dominant factor.     

Book Reviews

M. Arsjad Anwar, Thee Kian Wie, Iwan Jaya Azis, Pemikiran, Pdaksanaan, dan Perintisan Pembangunan Ekonomi[Concepts, Implementation, and Pioneering in Economic Development], Fakultas Ekonomi Universitas Indonesia and PT Gramedia Pustaka Utama, Jakarta, 1992, pp. xx + 700.

Adam Schwarz, A Nation in Waiting: Indonesia in the 1990s, Allen and Unwin, Sydney, and Westview, Boulder, 1994, pp. 370. Paper: A$24.95.

East Asia Analytical Unit, Expanding Horizons: Australia and Indonesia into the 22st Century,Department of Foreign Affairs and Trade, Canberra, 1994, pp. xviii + 346. A$34.95.

Sjahrir, Pikiran Politik[Political Ideas], LP3ES, Jakarta, 1994, pp. xiv + 191.

Sjahrir, Persoalan Ekonomi Indonesia: Moneter, Perkreditan dan Nenca Pembayaran[Problems of the Indonesian Economy: Money, Credit and the Balance of Payments], Pustaka Sinar Harapan, Jakarta, 1995, pp. xv + 205.

Sjahrir, Analisis Bursa Efek[Analysis of the Stock Exchange], PT Gramedia Pustaka Utama, Jakarta, 1995, pp. xiv + 169.

Sjahrir, Ekonomi Indonesia dalam Perspektif Bisnis[The Indonesian Economy in a Business Perspective], PT Jurnalindo Aksara Grafika, Jakarta, 1994, pp. xvi + 239.

Sjahrir, Kebijakan Negara Mengantisipasi Masa Depan[National Policy: Anticipating the Future], Yayasan Obor Indonesia, Jakarta, 1994, pp. xv + 251.

Sjahrir, Formasi Mikro-Makro Ekonomi Indonesia[Indonesia's Macro and Micro Economy], Penerbit Universitas Indonesia, Jakarta, 1995, pp. xii + 313

F.B.A. Bouman and Otto Hospes, Financial Landscapes Reconstructed: The Fine Art of Mapping Development,Westview, Boulder, 1994, pp. xi + 416. US$45.00

Robert Cribb (ed.), The Late Colonial State in Indonesia: Political and Economic foundations of the Netherlands Indies 1880–1942,Verhandelmgen van het Koninklijk Instituut voor Taal-, Land- en Volkenkunde 163, KITLV Press, Leiden, 1994, pp. xiii + 295.

Shinya Sugiyama and Milagros C. Guerrero (eds), International Commercial Rivalry in Southeast Asia in the Inierwar Period,Yale Southeast Asia Studies Monograph 39, Yale Center for International and Area Studies, New Haven, 1994, pp. ix + 222.

W.L. Korthals Altes, Changing Economy in Indonesia. Volume 15: Prices (Non-Rice) 1814–1940,Royal Tropical Institute, Amsterdam, 1994, pp. 175. Paper: Dfl. 48.00.