From colonization to national territories in continental West Africa: the historical geography of a transport infrastructure network

This paper argues that in order to study the geohistory of a transport infrastructure network it is necessary to identify the link between networks and territorial scales during a given period. It focuses on the creation of road and rail networks in French West Africa during the colonial period and in the land-locked States during the national period, which involves post-independence development policies. The network is perceived in this paper as the manifestation of the political will to facilitate traffic within a delimited space. Within the colonial and then the national periods roads and railways were thus constructed as part of a process that can be interpreted as the outcome of a compromise between a territorial project and the capacity to implement it. This geohistorical study thus allows us to identify, with reference to the link between borders and networks, the successive geographical linkages (railway and port combinations with their subsequent branches, national roads, economic roads, external connections) which have been applied in the delimited spaces in question. This exercise has concentrated particularly on continental West Africa.     

Megaquarry versus decentralized mineral production: network analysis of cement production in the Great Lakes region,USA

The geography of mineral resources and human settlement influences the production–consumption cycle of cement and other mined construction materials, and affects the energy, cost and environmental burden associated with these materials. Although mines that supply most construction products have traditionally been located near major points of consumption, population pressures have raised the possibility that these small, widely scattered operations might be replaced by large, megaquarry operations. This study uses network analysis to compare transportation-related energy and cost for cement production from highly centralized facilities, or megaquarries, to that from smaller production facilities dispersed throughout the Great Lakes region of the United States. Results show that a transition to megaquarries can increase transport-related energy and associated environmental impacts by almost 50%. This suggests that decisions involving the location of mining operations for construction products are best made on a regional rather than local basis.     

Fleet deployment, network design and hub location of liner shipping companies

A mixed integer linear programming formulation is proposed for the simultaneous design of network and fleet deployment of a deep-sea liner service provider. The underlying network design problem is based on a 4-index (5-index by considering capacity type) formulation of the hub location problem which are known for their tightness. The demand is elastic in the sense that the service provider can accept any fraction of the origin–destination demand. We then propose a primal decomposition method to solve instances of the problem to optimality. Numerical results confirm superiority of our approach in comparison with a general-purpose mixed integer programming solver.     

Concurrent design of product family and supply chain network considering quality and price

We study the problem of concurrent design of a product family and its supply chain (SC) network. Inspired by a real-life case in computer industry, the impact of quality and price in SC demand is investigated. Two different models are proposed, the former maximizes the company’s profit with respect to customers’ priorities on quality and price; the latter is a bi-objective programming, which consider two extreme customer groups: for one group quality has the highest priority and for the other price; the intermediate groups falls between these two. The performance of the models is analyzed through a case problem.     

关于铁路枢纽联络线与疏解线的设计分析

铁路联络线和疏解线是铁路路网不可缺少的组成部分,线路不长但用途很大,在新线设计尤其是枢纽设计中经常遇到。联络线的标准一般应与相邻线的标准一致;疏解线的标准由于其特殊性．在设计规范中规定了最小曲线半径和最大纵坡。站场设计手册对枢纽的疏解方式做了一些归类与分析,但设计者只知道这些还远远不够。随着枢纽引入线路的增多,联络线与疏解线会越来越复杂,既涉及到如何节省工程投资,更涉及到运输安全、质量与效率。分析铁路枢纽联络线与疏解线的设计方法,以便更好地设计这类线路。     

From Storyville to Bourbon Street: Vice,Nostalgia and Tourism

This paper contrasts New Orleans' former red-light district, Storyville, and contemporary Bourbon Street, New Orleans' major tourist attraction, to illustrate how history has been revived into a tourist product to maintain the city's appeal as a destination. Nostalgic images are developed for tourism consumption of heritage destinations. The images are idealised versions of the past that alter the authenticity of the historic context from where they came. On Bourbon Street, the Storyville district is utilised as an image to elicit nostalgia of a period no longer actively incorporated into New Orleans's cultural fabric. Through a qualitative analysis of the tourism communication materials, Bourbon Street is analysed as a nostalgic representation of Storyville and its once acceptable vice activities. Activities such as public sexuality, music and dancing, and shopping are ways in which tourists can experience the once legal red-light district. It is argued that what is presented to tourists is a commercial image of the past and its reputation, rather than an accurate portrayal of New Orleans either yesterday or today.     

Strategic design and operational management optimization of a multi stage physical distribution system

Design and management of logistic networks is one of the most critical issues in supply chain management. However, the literature does not contain any effective models, methods, and applications that simultaneously support management decisions in the strategic design of the distribution system, in the operational planning and organization of vehicles, and in container trips organization adopting different modes of transportation. The aim of this paper is to illustrate an original framework for the design and optimization of a multi echelon and multi level production/distribution system that combines mixed-integer linear programming modeling with cluster analysis, heuristic algorithms, and optimal transportation rules. A significant case study is illustrated revealing the effectiveness of the approach and tools proposed.     

Basic economic principles of road pricing: From theory to applications

This paper presents, a non-technical introduction to the economic principles relevant for transport pricing design and analysis. We provide the basic rationale behind pricing of externalities, discuss why simple Pigouvian tax rules that equate charges to marginal external costs are not optimal in ‘second-best’ settings, and discuss the conceptual link between congestion pricing and road capacity. The final part of the paper is devoted to implementation paths for transport pricing policies. A simple numerical model demonstrates how different time patterns of constraints on pricing and capacity policy instruments may lead to different time patterns of efficiency along those implementation paths.     

Exploring the network structure and nodal centrality of China’s air transport network: A complex network approach

This paper uses a complex network approach to examine the network structure and nodal centrality of individual cities in the air transport network of China (ATNC). Measures for overall network structure include degree distribution, average path length and clustering coefficient. Centrality metrics for individual cities are degree, closeness and betweenness, representing a node’s location advantage as being directly connected to others, being accessible to others, and being the intermediary between others, respectively. Results indicate that the ATNC has a cumulative degree distribution captured by an exponential function, and displays some small-world (SW) network properties with an average path length of 2.23 and a clustering coefficient of 0.69. All three centrality indices are highly correlated with socio-economic indicators of cities such as air passenger volume, population, and gross regional domestic product (GRDP). This confirms that centrality captures a crucial aspect of location advantage in the ATNC and has important implications in shaping the spatial pattern of economic activities. Most small and low-degree airports are directly connected to the largest cities with the best centrality and bypass their regional centers, and therefore sub-networks in the ATNC are less developed except for Kunming in the southwest and Urumchi in the northwest because of their strategic locations for geographic and political reasons. The ANTC is relatively young, and not as efficient and well-developed as that of the US.     

UK road freight energy use by product: trends and analysis from 1985 to 1995

Since the early 1980s, energy use in road freight has been rising much faster than overall energy use in the UK. To better understand the factors driving this rapid growth, we carried out an analysis of road freight energy use trends across 14 product sectors from 1985 to 1995. Growth in length and complexity of supply chains, rather than growth of output, is shown to be the main driver of increasing freight energy consumption, with high value products having the highest energy use per tonne lifted. Policy options and a proposal for improved estimation of energy consumption are also discussed.     

From vehicle suppliers to value co-creators: the evolving role of Italian motorhome manufacturers

Recreational vehicle (RV) manufacturers have traditionally been viewed as having no direct effect on caravanning experiences beyond their role as the suppliers of the vehicles. Drawing on the theoretical approach known as service-dominant logic, this paper suggests that RV manufacturers play an active role in the co-creation of tourism experiences. This study adopted the framework developed by Storbacka, K., Brodie, R. J., P., Böhmann, T., Maglio P. P., & Nenonen, S. [(2016). Actor engagement as a microfoundation for value co-creation. Journal of Business Research, 69(1), 3008–3017] that considers engagement as a microfoundation of value co-creation to investigate value co-creation in this context. A template analysis of the data collected from in-depth interviews with all Italian motorhome manufacturers revealed themes relating to five issues: engaging actors, engaging platforms, actors’ dispositions, engagement properties and resource integration patterns. The theoretical and managerial implications of these findings are discussed.     

Walking to transit: An unexpected source of physical activity

Using data from a regional survey carried out in Montreal, this paper shows empirical evidence that modal shift from car to transit contributes to the volume of daily physical activity. First, the paper presents a method to calculate the walking distance related to transit trips, and a totally disaggregate trip assignment model. The walking distance involved in every transit trip is then associated to the individuals' characteristics to estimate the number of steps made by the population in the whole transit system.Results show that, in average, a transit trip involves 1250 steps, required to access and egress the network as well as to transfer between routes or modes. Thus, a round trip represents 2500 steps, which account for 25% of the recommended volume of physical activity per day. Hence, analysis shows that the volume of walking varies according to attributes of the traveler (general decrease with age, higher for men) and of the trip (study and work trip involve more steps, the use of train generates more steps). A regression model confirms that these variables significantly affect the number of steps involved in transit trips. Such positive outcome, for the traveler himself, is an innovative argument to promote the use of transit that is also aligned with current sustainable transportation goals.     

日照-哈尔滨直通旅客列车开行效果及必要性

由于２０００年春节期间开行日照－哈尔滨临客取得良好效果,进而根据鲁东南地区客流特点,论述了开行日照－哈尔滨直通旅客列车的必要性及营销对策。     

The costs of peak-load demand: An application to Gran Canaria airport

Many airports suffer from peak-load demand problems. To meet unconstrained demand at peak periods, they often invest in extra capacity that may be under used at other times. We use data from the airport in Gran Canaria to illustrate that costs associated with the peak-load problem are not only those related to the new investment. This paper provides a methodology for analyzing the costs arisen due to the peak-load demand, to explore alternative airport policies and to illustrate the problem of congestion at airport terminals. The results suggest that a situation in which airports differentiate charges by peak and off-peak days would be much desirable.     

From a hub port city to a global supply chain management center: a case study of Hong Kong

This paper explores the critical challenges encountered in the transformation process of Hong Kong from a freight transport hub city to a knowledge-based global supply chain management center (GSCMC). The exploration involves an examination of the structural issues of the logistics industry in Hong Kong within the framework of global value chains (GVC). A questionnaire survey and a series of interviews were conducted to reveal the essential problems that the key parties of the Hong Kong logistics industry face if the transition of Hong Kong into a GSCMC is to be successful in all segments of the industry. Through a categorical analysis of logistics segments, the hurdles to the GSCMC as well as the institutional measures are also discussed in this paper.     

Network structure and travel patterns: explaining the geographical disparities of road network vulnerability

Inevitably, links in the road network are sometimes disrupted because of adverse weather, technical failures or major accidents. Link closures may have different economic and societal consequences depending on in which regions they occur (regional importance), and users may be affected differently depending on where they travel (regional exposure). In this paper we investigate in what way these geographical disparities depend on the road network structure and travel patterns. We propose aggregate supply-side (link redundancy, network scale, road density, population density) and demand-side (user travel time, traffic load) indicators and combine them in statistical regression models. Using the Swedish road network as a case study, we find that regional importance is largely determined by the network structure and the average traffic load in the region, whereas regional exposure is largely determined by the network structure and the average user travel time. Our findings show that the long-term vulnerability disparities stem from fundamental properties of the transport system and the population densities. Quantitatively, they show how vulnerability depends on different variables, which is of interest for robust network design.     

Institutional design and governance of airport regulators: The case of Latin America

This paper offers a cross-country assessment of the governance of airport regulators in Latin America. The analysis links the institutional design of airport regulators, whether in the form of independent regulatory agencies or government departments, to their overall governance. It examines four dimensions of regulatory governance: autonomy, transparency, accountability, and bureaucratic quality. Independent regulatory agencies in the Latin American airport sector seem to provide a better framework for transparency and bureaucratic quality than government departments. It is not conclusively found, however, that independent regulatory agencies contribute to a more autonomous decision-making or to an enhanced accountability of regulators to other branches of government and airport users. Overall, governance indicators of airport regulators in Latin America are well below the threshold that defines good governance.     

Comparative North American and European gateway logistics: the regionalism of freight distribution

The global freight distribution system has been impacted by convergence in terms of technology, infrastructure, modes and terminals. Still, in spite of strong converging forces, it can be argued that logistical practices are far from being uniform. This paper analyses the regionalism in freight transport systems by providing a comparative analysis of gateway logistics practices in North America and Europe. It is demonstrated that Europe and North America are not walking the same paths when it comes to the configuration of transport and logistics networks, via operational decisions and the setting of a regulatory framework. The attributes of gateways, corridors, hinterlands, regulation, governance, value chains and labor provide an analytical framework to understand the regionalism of freight distribution in the North American and European contexts, as well as anywhere else.     

The Poetics of Tourist Experience: An Autoethnography of a Family Trip to Eilat1

This paper is an autoethnographic exploration of a tourist’s experience. Through interpreting qualitative material, in the form of a poem I wrote in 1994 about a short familial excursion to an Israeli seaside resort city (Eilat), the research seeks to sensitively describe the intricacies of travel experience. The research explores the advantages of the autoethnographic method of inquiry, and discusses tourism-related emotions and memories in the context of performance and representation. The paper joins recent efforts in attempting to challenge and loosen the grip of positivist epistemologies and discourses on mainstream tourism studies, by illustrating the emotional complexities and contradictions in the travel experience of tourists. In line with traditions of critical research in sociology, the exploration sheds light on the materiality of texts and on the role language plays in tourism, viewing the poem read in this paper (‘Quiet Eilat’) simultaneously as a representation, performance and material object of discourse.     

Concentration and decentralization: The new geography of freight distribution in US metropolitan areas

This paper examines the suburbanization of warehousing and trucking activity within US metropolitan areas between the 1980s and the present using Gini indices as a measure of concentration. While historical work exists on the relocation of transportation and warehousing activity to suburban locations, there has been little to document the most recent shifts in warehousing and logistics. This research does so via spatial analysis of Economic Census data, finding that while most US metropolitan areas have experienced decentralization in the spatial distribution of freight-related activity, there is also some growth in core counties, indicating that a more complex process is going on than simple suburbanization.