Network effects and total economic impact in transport appraisal

It is claimed that transport infrastructure projects have network effects which are not taken into account in the appraisal of these projects. This paper reviews the concept of network effects, relates this to transport appraisal practice, and links to the concept of ‘total economic impact’. The limitations of transport modelling and appraisal in estimating total economic impact are reviewed. Good quality appraisals should be capable of picking up relevant network effects in the transport market, but the state of the art remains limited on the linkages between transport and the wider economy

Net:Geography Fieldwork Frequently Asked Questions

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TRAVEL ADJUSTMENTS AFTER ROAD CLOSURE: WORKINGTON

The closure of all roads links between south and north Workington following the floods of November 2009 produced an unusual travel situation. Provision of a frequent and free train service and the erection of a footbridge brought good access between both parts of the town by foot, cycle and train, but a heavily congested 18 mile detour by road. This paper describes the findings of a survey of over 400 Workington residents about how they adapted and how that has affected the way they travel now that road connections have been restored. Adaptations included changing mode, time of travel and changing destinations. Many respondents report personal hardships, including loss of job, health impacts, reduced family visits to relations and the stress caused by extra travelling time. The paper also describes adaptations by organisations and authorities such as providing feeder bus services, opening a temporary supermarket and offering different worksites or changed hours to help their employees. The paper considers how the severing of connections required services to be rethought. The discussion questions whether the findings are relevant to more predictable changes such as rising fuel prices and climate change mitigation measures

Qualitative and quantitative analysis of the sport tourism from the perspective of romanian young adults

Sport, as a passive or dynamic activity has an important role in our lives. It has become a social phenomenon. At the same time, the sporting industry represents an “economic phenomenon” generating billions of dollars every year through tickets, sponsorships and TV rights. Tourism is one of the fastest growing industries in the world. Sport tourism involves traveling and visiting a destination for sporting reasons, either active or passive. The aim of our study is to analyze the importance of sport tourism for young adults in Romania. With the help of questionnaires we will try to find out the importance and the shapes sport tourism can have in the lives of students from different faculties. Additionally, our study brings an overlook on the qualitative and quantitative aspects that characterize this new form of tourism, from the young Romanian adults’ perspectivetourism, sport, travel, Romania, young adults. empirical survey

Measuring the Relationships between Internet Geography and RTT

When designing distributed systems and Internet protocols, designers can benefit from statistical models of the Internet that can be used to estimate their performance. However, it is frequently impossible for these models to include every property of interest. In these cases, model builders have to select a reduced subset of network properties, and the rest will have to be estimated from those available. In this paper we present a technique for the analysis of Internet round trip times (RTT) and its relationship with other geographic and network properties. This technique is applied on a novel dataset comprising ∼19 million RTT measurements derived from ∼200 million RTT samples between ∼54 thousand DNS servers. Our main contribution is an information-theoretical analysis that allows us to determine the amount of information that a given subset of geographic or network variables (such as RTT or great circle distance between geolocated hosts) gives about other variables of interest. We then provide bounds on the error that can be expected when using statistical estimators for the variables of interest based on subsets of other variables

cISP: A Speed-of-Light Internet Service Provider

Low latency is a requirement for a variety of interactive network applications. The Internet, however, is not optimized for latency. We thus explore the design of cost-effective wide-area networks that move data over paths very close to great-circle paths, at speeds very close to the speed of light in vacuum. Our cISP design augments the Internet's fiber with free-space wireless connectivity. cISP addresses the fundamental challenge of simultaneously providing low latency and scalable bandwidth, while accounting for numerous practical factors ranging from transmission tower availability to packet queuing. We show that instantiations of cISP across the contiguous United States and Europe would achieve mean latencies within 5% of that achievable using great-circle paths at the speed of light, over medium and long distances. Further, we estimate that the economic value from such networks would substantially exceed their expense