A note on the use of Markov chains to analyze the off‐peak season provision of guided tours to tourists

In this note, we provide answers to two hitherto unstudied questions in the tourism literature. Specifically, we first show how the theory of discrete‐time Markov Chains (DTMCs) can be used to effectively model and analyze the problem of providing guided tours to tourists during the off‐peak season. Next, we model the existence of a capacity constraint and then show how DTMC theory can be used to derive a metric of interest to an optimizing tour providing firm, namely, the long run fraction of tourists to whom the firm under study is unable to provide tours. Copyright © 2010 John Wiley & Sons, Ltd.     

A diagrammatic analysis of the market for cruising taxis

A diagrammatic approach is used to study the characteristics of the cruising taxi market. For cost modeling, both taxi operator and passenger are taken as service producers. The former provides his vehicle operation and the latter, his waiting and travel time. Market demand is defined as a function of generalized price. It is shown that under short and long run conditions a unique equilibrium exists for a deregulated industry and it corresponds to a monopolistic competition. The relations among the free market equilibrium, social optimum and second best solution are analyzed. Regulations are studied in order to find their social convenience.     

Optimizing the service area and trip selection of an electric automated taxi system used for the last mile of train trips

We propose two integer programming models for optimizing an automated taxi (AT) system for last mile of train trips. Model S1: trip reservations are accepted or rejected by the operator according to the profit maximization; model S2: any reservation on a selected zone by the model must be satisfied. Models were applied to a case-study. Results indicate that fleet size influences the profitability of the taxi system: a fleet of 40 ATs is optimal in S1 and 60 ATs in S2. Having electric ATs constrains the system for small fleets because ATs will not have time for charging.     

Temporal Granger Causality and the Dynamics Relationship Between Real Tourism Receipts,Real Income and Real Exchange Rates in Malaysia

This study applies the bounds testing approach, error‐correction modelling and persistence profile to analyse the dynamic relationship between real tourism receipts, real income and real exchange rates in Malaysia. The present study covers the annual sample period from 1974 to 2009. The results reveal that a long‐run relationship exists between the variables. In the short run, this study finds no Granger causality between real tourism receipts and real income, whereas there is bidirectional causality in the long‐run. Moreover, we also find unidirectional causality running from real exchange rates to real tourism receipts and real income in both short‐ and long‐run. Copyright © 2012 John Wiley & Sons, Ltd.     

Analysis of the effect of charging infrastructure design on electric taxi driving profiles: A case study approach on the example of Singapore

Replacing conventional vehicle taxis with electric vehicles would be an efficient measure to reduce greenhouse gas emissions. Due to the limited range and long charging times of current battery electric vehicles, it is of utmost importance to provide sufficient charging facilities. This article analyses the impact of the placement and charging power of charging stations on potential mileage and revenue of electric taxis on the example of Singapore. Therefore, we developed an agent-based electric taxi simulation model to investigate electric taxis’ driving profiles with respect to different vehicle types and charging infrastructure designs. This model is also capable of simulating conventional taxi driving profiles. The validation of these simulation results with real taxi data showed that the model is reproducing taxi driving profiles with high accuracy in great detail. We found out that electric taxis could reach the same mileage and revenue as conventional taxis if charging with a power of 160?kW is possible. Furthermore, we discovered that waiting times for available charging stations have a stronger effect on revenue than the length of detours to reach charging stations. Based on these findings, we concluded that it is more important to reduce waiting times by placing sufficient numbers of charging stations at each location before expanding the charging network by installing small numbers of charging stations at many locations.     

A model for taxi pooling with stochastic vehicle travel times

Taxi pooling means the sharing of a taxi by more than one passenger with at least a semi-common route. Currently, a trial-and-error process is adopted, taking into account expected travel times, for taxi pooling, a method which is neither effective nor efficient. This is because stochastic disturbances arising from variations in the taxi travel times that occur in actual traveling are neglected. In the worst case scenario, where vehicle travel times fluctuate wildly during operations, the planned schedule can be disturbed enough to lose its optimality. Therefore, in this study, a network flow technique is used to construct a stochastic taxi pooling model incorporating stochastic vehicle travel times. A solution algorithm is also proposed to efficiently solve the problem. The performance of the proposed models and the use of the solution method in practice are evaluated by executing numerical tests using real data with suitable assumptions. The test results show that the stochastic model and the solution method could be useful references for practice.     

Utopian Tourists — Cruising is Not Just About Sailing

Arguably, all tourists are looking to fulfil dreams that involve some sense of a 'utopian' ideal, whether in the 'arms' of an ancient civilisation or relaxing on a beach, free of work-a-day worries. Similarly, the growth of ecotourism and adventure tourism represents touristic attempts to fulfil utopian dreams denied the urban resident. For most tourists, these utopian dreams are played out in the year's annual holiday. Other tourists move beyond the confines of this time capsule because they have no intention of going 'home' - their 'escape attempts' become a whole way of life. This paper brings together the sociology of tourism and of alter native lifestyles to understand the nature of a utopian subculture, long-term ocean yacht cruising. While by most definitions these people are tourists, in relation to other sociological concepts they are a utopian 'community' which espouses not only an explicit social critique but also utopian lifestyle goals. While our notions of 'utopian' thinking tend to a collective, not all those who seek utopian alternatives to mainstream society do so within the 'collective' community. A social critique and a vision of a better lifestyle can be expressed in more individuated action. This paper shows how a traveller subculture expresses these issues.     

Urban taxis and air pollution: a case study in Harbin, China

Taxis share a high proportion of urban traffic volume and contribute a large proportion to urban air pollution. This paper addressees this context by exploring urban taxi air pollution emissions and possible reduction countermeasures. Based on a survey of Harbin taxis, we have developed different urban taxi pollution emissions models and considered taxi passenger occupancy and taxi average vacant ratio. To reduce taxi air pollution emission, this paper sets a reduction goal and puts forward three kinds of transport management policies. These are taxi market regulation, introduction of electric and Liquefied Petroleum Gas powered vehicles, and the introduction of dial-a-ride services. The paper provides recommendations for managing urban taxi development using these strategies.     

Revealing intra-urban travel patterns and service ranges from taxi trajectories

As an important transport tool, taxi plays a significant role to meet travel demand in urban city. Understanding the travel patterns of taxis is important for addressing many urban sustainability challenges. Previous research has primarily focused on examining the statistical properties of taxi trips to characterize travel patterns, while it may be more appropriate to explore taxi service strategies on seasonal, weekly or daily time scale. Therefore, intra-urban taxi mobility is investigated by examining taxi trajectory data that were collected in Harbin, China, while 12-week corresponding to 12-month is chosen as the sampling period in our study. The multivariate spatial point pattern analysis is firstly adopted to characterize and model the spatial dependence, and infer significant positive spatial relationships between the picked up points (PUPs) and the dropped off points (DOPs). Secondly, the points of interest (POIs) are identified from DOPs using the emerging hot spot detection technique, then the taxi services and movement patterns surrounding POIs are further examined in details. Moreover, our study builds on and extends the existing work to examine the statistical regularities of trip distances, and we also validate and quantify the impacts posed by airport trips on the distance distributions. Finally, the movement-based kernel density estimation (MKDE) method is proposed to estimate taxis' service ranges within three isopleth levels (50, 75 and 95%) between summer/weekday and winter/weekend from taxi driver's perspective, and season as well as temperature factors are identified as the significant effect within certain service range levels. These results are expected to enhance current urban mobility research and suggest some interesting avenues for future research.     

Looking for the obvious: Motorcycle taxi services in Sub-Saharan African cities

Motorcycle taxis (MCT) have been present in many cities of Sub-Saharan Africa for several decades. This paper aims to answer two questions: How can we objectify the massive and lasting development of a “motorcycle taxi model” in the cities of SSA? How does this model function in practice? First, the spread of motorcycle taxis in Sub-Saharan Africa is examined by using an internet-based bibliometric analysis of academic output and local press articles. Second, the functioning of the industry and the informalization rationales at work in the deployment of the motorcycle taxi model are analyzed on the basis of a field study in Lomé, the capital of Togo.The bibliometric analysis of the academic output shows the presence of MCT in 14 countries over a 30 year period, and that of the local press almost doubles the number of countries. It also provides some temporal reference points and suggests some reasons for MCT deployment. Three main features of the functioning of the MCT industry in Lomé are identified: the equivocal attitude of the State, the heterogeneous characteristics of the players, and the strong and multifaceted linkages of MCT with formal activities. The results from this research provide evidence that the development of the motorcycle taxi model in SSA is closely associated with globalization and informalization processes.     

Tourism flows between India and Singapore

The tourism industry has become increasingly important as a source of revenue and employment for countries in Southeast Asia. Within the Southeast Asian region, intraregional travel has also seen an upsurge since the Asian Financial Crisis of 1997. More attention is also being paid to attract other Asian tourists from China, India, Japan and South Korea to the region. Competition to be tourism hubs in the region has seen countries such as Singapore developing an array of incentives to entice inbound foreign tourists to its shores. The aim of this paper is to examine the growing importance of India as a source of inbound tourists for countries in Southeast Asia and in particular Singapore. India is an apt case study because of its long historical and cultural links with the region. Another main motivation for examining inbound tourists from India is India's engagement with the Southeast Asian region through its ‘Look East’ policy. Following from its economic reforms and liberalisation of 1991, India has sought to strengthen economic links with ASEAN member states through a range of economic sectors including tourism. The 1991 Indian economic liberalisation has also created an upsurge of Indian business travellers who are exploring investment and business opportunities in the Southeast Asian region. With India's economic liberalisation of 1991, an expanding middle class has come to view foreign travel as a necessity. In turn, ASEAN member states, such as Singapore in particular, which is heavily dependent on its services sector, including tourism, for revenue, have chosen to regionalise its tourism operations by collaborating and investing in projects in India to woo more Indian tourists. Competition in the tourism sector among ASEAN countries has increased the urgency for Singapore to reinvent itself to attract foreign tourists and implement a number of initiatives to maintain its share of the tourism market. Copyright © 2003 John Wiley & Sons, Ltd.     

Dual sourced supply chains: the discount supplier option

In this paper, we examine the dynamics of a supply chain that has the option of using two suppliers – one reliable, and the other unreliable. We characterize the unreliable supplier with long lead-time mean and variance. Although the use of the unreliable supplier might potentially warrant higher inventory and transportation costs, it is attractive because of the willingness of the supplier to provide a discount on the purchase price. We analyze the cost economics of two suppliers in a broader inventory-logistics framework, one that includes in-transit inventories and transportation costs. In this broader perspective, we provide a simple heuristic and sample exchange curves to determine: (i) if the order should be split between the suppliers; and (ii) if the order is split, the amount of discount and the fraction ordered to the secondary supplier to make order-splitting a worth-while policy. ©     

On the Sale of Package Tours to Infinitely Many Possible Types of Tourists

Alao and Batabyal (2013) have recently used contract theory to study the sale of package tours to tourists when the tourists can be of two possible types. In this note, we first generalize their analysis by studying the case in which the tourists can be of infinitely many types. Next, we compare our results with those obtained by Alao and Batabyal. Finally, we conclude and then discuss extensions of this note's research. Copyright © 2013 John Wiley & Sons, Ltd.     

The art of development: economic and cultural development through art in San Juan la Laguna,Guatemala

This paper examines how artisans experience economic and cultural changes through art sales to tourists in San Juan la Laguna, Guatemala; the aim is to analyse experiences from hosts and producers in art tourism. Using a life course approach, the artists in this area expressed how they do not copy the art of their ancestors, but draw on their past to create new art that reflects their experiences, and sell it to tourists at a price they set. Painting on canvas and murals is a way to overcome historical discrimination based on their cultural identity while they explore and communicate their new identities to themselves and outsiders. Therefore the encounter at the art market strengthens both their economic identities and cultural identities. This is contradiction because the two goals are not necessarily complementary. I argue that the painters in San Juan illustrate the art of development because the painters artfully use their new economic and cultural identities to craft a space to negotiate the terms of the encounter with globalization to struggle for a better life.     

A traffic engineering model for air taxi services

We propose a single-provider model for on-demand air taxi services. Data from a discrete-event model support a “flow model,” which describes the aggregate flow of passengers and aircraft for an air taxi service provider without specifying event-level operation. Using a set of hypothetical scenarios for air taxi network operation, we evaluate the accuracy of the flow model against the outputs of the discrete-event model. Finally, we illustrate how the flow model can be applied towards the optimal pricing of passenger fares for a single air taxi service provider.     

Examining the spatial-temporal relationship between urban built environment and taxi ridership: Results of a semi-parametric GWPR model

With the advance of intelligent transportation systems (ITSs) and data acquisition systems (DASs), it becomes possible in recent to explore the determinants of urban taxi ridership using multi-source heterogeneous data. This paper aims to use floating car data, points-of-interests (POIs) data and housing-price data to assess the influence of the built environment on taxi ridership. Within a scale of 0.5 km grid, critical indicators related to the economic aspect, intermodal connection, and land use factors were obtained using the multi-source data in Shanghai. To capture the spatial and temporal heterogeneity, Semi-parametric Geographically Weighted Poisson Regression (SGWPR) models are built over different time dimensions. It is found that SGWPR models result in higher goodness-of-fit than the generalized linear models. More importantly, the results show the impacts of built environment factors on taxi demand are highly heterogeneous, positive or negative in different city areas, reflected in the significant temporal variations of the effects. Overall, these findings suggest that the built environment factors have significant impacts on urban taxi demand, and the spatial context should not be ignored. Findings in this paper are expected to help better understand the relationship between urban taxi demand and built environment factors, improving the service level of the urban taxi system, and offering valuable insights into future urban and transportation planning.     

Pricing strategies for a taxi-hailing platform

Taxi hailing apps that facilitate taxi-customer matching quickly become popular in recent years. By combining the theories of two-sided market and taxi market, this paper models the taxi market in the presence of a single taxi hailing app through an aggregate and static approach. Based on the equilibrium model, the existence and stability of equilibria are examined, and a partial-derivative-based sensitivity analysis is conducted to quantitatively evaluate the impacts of the platform’s pricing strategies to the taxi market performance. The features of desirable price perturbations that improve social welfare and/or the platform’s profitability are also characterized.     

Tour Guides and the mediation of difficult memories: the case of Dublin Castle,Ireland

This research seeks to furthering understandings of how Tour Guides interpret memories at heritage sites when the memories at issue are difficult yet subtle and not always apparent to tourists. Specifically, it explores how Dublin Castle, formerly the seat of British rule in Ireland, is captured in narratives presented to tourists that often include Britons. Representing the site is made challenging because some visitors have little knowledge of the site's history, while others are well informed and hold strong political views. The findings show that Guides select largely depoliticized narratives, strongly influenced by their personal interests and experiences. Some hint at underlying tensions that only tourists alert to the complexities of the site might capture. Dominant narratives can be challenged by tourists with an interest in, or allegiance to, particular historical or political beliefs, leading to emotional engagements. Some tourists, unaware of the complexities of the site, can encounter a more multi-layered and complex experience than perhaps envisaged. The study affirms the co-production evident in Tour Guiding narratives and points to the need for further research into how the variously empowered agencies of both the Guide and the tourist produce a constant shifting and re-working of memory.     

Linking accommodation choice,information overload and choice overload

ABSTRACT

The present study examines the temporal sequence of vacation decision-making, in particular, choice of accommodation and whether tourists experience information overload and choice overload when booking accommodation for an exotic distant destination. The data were gathered through semi-structured interviews among 17 tourists who had visited Rovaniemi, Finland representing 12 different nationalities. Nine out of the 17 participants had made their choice and booked their accommodation just one month before travelling to Rovaniemi. In addition, besides one study participant from Kuwait, none had experienced information overload and choice overload. The findings suggest that because of the growth and use of digital technology, today tourists are adaptive, continuously assessing the value of their planned itinerary, and are more receptive to the acquisition of new information.