共查询到20条相似文献,搜索用时 31 毫秒
1.
Those who oppose tolls and other forms of road pricing argue that low-income, urban residents will suffer if they must pay
to use congested freeways. This contention, however, fails to consider (1) how much low-income residents already pay for transportation
in taxes and fees, or (2) how much residents would pay for highway infrastructure under an alternative revenue-generating
scheme, such as a sales tax. This paper compares the cost burden of a value-priced road, State Route 91 (SR91) in Orange County,
California with the cost burden under Orange County’s local option transportation sales tax, Measure M. We find that although
the sales tax spreads the costs of transportation facilities across a large number of people inside and outside Orange County,
it redistributes about $3 million (USD) in revenues from less affluent residents to those with higher incomes. The entire
Measure M program redistributes an estimated $26 million from low-income residents to the more affluent. Low-income drivers
as individuals save substantially if they do not have to pay tolls, but as a group low-income residents, on average, pay more
out-of-pocket with sales taxes.
Lisa Schweitzer is an assistant professor at the University of Southern California. Her work on environmental injustice in transportation has appeared in Urban Studies, Built Environment, and Transportation Research Parts A and D. Brian D. Taylor is the Director of the Institute of Transportation Studies and Professor of Urban Planning at the University of California, Los Angeles. His research centers on how society pays for transportation systems and how these systems in turn serve the needs of people who have low levels of mobility. 相似文献
Brian D. TaylorEmail: |
Lisa Schweitzer is an assistant professor at the University of Southern California. Her work on environmental injustice in transportation has appeared in Urban Studies, Built Environment, and Transportation Research Parts A and D. Brian D. Taylor is the Director of the Institute of Transportation Studies and Professor of Urban Planning at the University of California, Los Angeles. His research centers on how society pays for transportation systems and how these systems in turn serve the needs of people who have low levels of mobility. 相似文献
2.
Between 1990 and 2000, U.S. transit agencies added service and increased ridership, but the ridership increase failed to keep
pace with the service increase. The result was a decline in service effectiveness (or productivity). This marks the continuation
of a long-running and often-studied trend. The scholarly literature attributes this phenomenon, at least in part, to transit
agency decisions to decentralize their service rather than focus on serving the traditional CBD market. Many scholars argue
that a decentralized service orientation is both ineffective and inefficient because it attracts few riders and requires large
per-rider subsidies. This research tests whether a non-traditional, decentralized service orientation, called multidestination
service, results in reduced service productivity. Contrary to what the literature suggests, we find that MSAs whose transit
agencies pursued a multidestination service orientation did not experience lower productivity. These results indicate that
policies that have encouraged the growth of decentralized transit services have not necessarily been detrimental to the industry.
相似文献
Gregory L. ThompsonEmail: |
3.
The impact of high-speed technology on railway demand 总被引:1,自引:0,他引:1
This paper estimates a passenger railway demand function to analyse effects arising from the introduction and use of high-speed
technologies. The paper reports estimates of demand elasticities with respect to price, income, quality of service and a range
of exogenous characteristics. The results show that travel time savings from conventional high-speed technology have a larger
impact on passenger demand than tilting train technology. The introduction of conventional high-speed technology is associated
with an 8% increase in passenger railway demand. Increasing the use of either type of high-speed technology appears to induce
small positive effects on demand beyond those obtained from usual traffic density increases on non-high-speed existing technology.
Antonio Couto is an assistant professor in the Faculty of Engineering (FEUP) at the University of Porto. He received his PhD from FEUP in 2005 having completed a thesis in railway transport economics. His research focuses on issues related to transport economics and infrastructures. Daniel J. Graham is a Reader in the Centre for Transport Studies at Imperial College London. He specialises in the economics of transport, focusing in particular on modelling the implications of transport provision and accessibility for productivity and economic growth. 相似文献
Daniel J. Graham (Corresponding author)Email: |
Antonio Couto is an assistant professor in the Faculty of Engineering (FEUP) at the University of Porto. He received his PhD from FEUP in 2005 having completed a thesis in railway transport economics. His research focuses on issues related to transport economics and infrastructures. Daniel J. Graham is a Reader in the Centre for Transport Studies at Imperial College London. He specialises in the economics of transport, focusing in particular on modelling the implications of transport provision and accessibility for productivity and economic growth. 相似文献
4.
This paper reports the results of a stated-preference study aimed at investigating how transport decisions are made by receivers
or by transport operators about the potential use of an urban freight consolidation centre in the city of Fano, Italy. Because
there are no revealed preference data, a stated-choice methodology is used. The stated-choice experiments present two alternatives—one
using a private vehicle subject to various traffic regulations and one using the urban freight consolidation centre with varying
cost and efficiency levels. Conventional discrete choice data modelling shows that the potential demand is influenced mainly
by the distance of the parking bay from the shop, by access permit cost, by the service cost of the urban freight consolidation
centre, and by the delay in delivery time. Simulations are then performed to assess how the potential demand is affected by
various incentives and regulations affecting urban goods distribution.
Edoardo Marcucci is Associate Professor of Applied Economics at the Faculty of Political Sciences, University of Roma Tre, Italy, General Secretary of the Italian Society of Transportation Economists, and co-founder of the Kuhmo—Nectar Conference and Summer School Series on Pricing, Financing, Regulating Transport Infrastructures and Services. He has studied freight transportation concentrating on interactions along logistic supply chains. Romeo Danielis is Full Professor at the University of Trieste, Italy. He is managing editor of European Transport\Trasporti Europei. He has published articles on input-output modelling, regional environmental policy, social costing of transport externalities, EU enlargement and on several transport issues including road pricing, the Down-Thompson paradox, energy use and CO2 emissions, freight transport demand and stated preferences. 相似文献
Edoardo MarcucciEmail: |
Edoardo Marcucci is Associate Professor of Applied Economics at the Faculty of Political Sciences, University of Roma Tre, Italy, General Secretary of the Italian Society of Transportation Economists, and co-founder of the Kuhmo—Nectar Conference and Summer School Series on Pricing, Financing, Regulating Transport Infrastructures and Services. He has studied freight transportation concentrating on interactions along logistic supply chains. Romeo Danielis is Full Professor at the University of Trieste, Italy. He is managing editor of European Transport\Trasporti Europei. He has published articles on input-output modelling, regional environmental policy, social costing of transport externalities, EU enlargement and on several transport issues including road pricing, the Down-Thompson paradox, energy use and CO2 emissions, freight transport demand and stated preferences. 相似文献
5.
Paul Stangl 《Transportation》2008,35(6):759-775
Following the passage of ISTEA, increased attention to pedestrian planning has led to the development of pedestrian plans,
particularly at the metropolitan and municipal levels. This has raised the issue of how cities and metropolitan areas evaluate
the walkability of the pedestrian realm and identify improvement projects. Three approaches to evaluating the pedestrian realm
are examined: instrumental rationality, communicative rationality, and phenomenology. Case studies demonstrating the application
of these approaches to the development of pedestrian plans are examined in the Phoenix metropolitan area, Portland, Oregon,
and Cambridge, Massachusetts.
Paul Stangl obtained a Doctorate in Geography at the University of Texas, Austin, in 2001 and a Masters Degree in City and Regional Planning from Rutgers University, in 1992. He has worked as a transportation planner for the City of North Charleston, S.C. and currently teaches city and regional planning at Western Washington University. 相似文献
Paul StanglEmail: |
Paul Stangl obtained a Doctorate in Geography at the University of Texas, Austin, in 2001 and a Masters Degree in City and Regional Planning from Rutgers University, in 1992. He has worked as a transportation planner for the City of North Charleston, S.C. and currently teaches city and regional planning at Western Washington University. 相似文献
6.
Galit Cohen-Blankshtain 《Transportation》2008,35(3):411-424
Transportation analysis emphasizes the necessity to internalize the transport externalities of car usage through taxation.
Yet taxation decisions are often made with non-transport goals in mind. In such cases, transport policies are made ‘by the
way.’ This paper examines such a case: Israel’s taxation policy on company cars. It shows that current taxation policies result
in increasing numbers of company cars and growing numbers of transport users who are not sensitive to the marginal cost of
car use and make excessive use of the car. As a result, a significant portion of Travel Demand Management (TDM) measures cannot
affect this group. The Israeli case of company car tax reform demonstrates the problematic effect of a policy that does not
take its overall consequences on other policy fields into account and thereby impairs efforts to reduce the negative impacts
of the transport system. Also, it demonstrates the importance of institutional aspects of transport policymaking.
Cohen-Blankshtain is a lecturer at the department of Geography and School of Public Policy at the Hebrew University. Her research interests include urban policy, transport and ICT policy and participation process in public policy. 相似文献
Galit Cohen-BlankshtainEmail: |
Cohen-Blankshtain is a lecturer at the department of Geography and School of Public Policy at the Hebrew University. Her research interests include urban policy, transport and ICT policy and participation process in public policy. 相似文献
7.
Do changes in neighborhood characteristics lead to changes in travel behavior? A structural equations modeling approach 总被引:5,自引:2,他引:3
Suburban sprawl has been widely criticized for its contribution to auto dependence. Numerous studies have found that residents
in suburban neighborhoods drive more and walk less than their counterparts in traditional environments. However, most studies
confirm only an association between the built environment and travel behavior, and have yet to establish the predominant underlying
causal link: whether neighborhood design independently influences travel behavior or whether preferences for travel options
affect residential choice. That is, residential self-selection may be at work. A few studies have recently addressed the influence
of self-selection. However, our understanding of the causality issue is still immature. To address this issue, this study
took into account individuals’ self-selection by employing a quasi-longitudinal design and by controlling for residential
preferences and travel attitudes. In particular, using data collected from 547 movers currently living in four traditional
neighborhoods and four suburban neighborhoods in Northern California, we developed a structural equations model to investigate
the relationships among changes in the built environment, changes in auto ownership, and changes in travel behavior. The results
provide some encouragement that land-use policies designed to put residents closer to destinations and provide them with alternative
transportation options will actually lead to less driving and more walking.
Xinyu (Jason) Cao is a research fellow in the Upper Great Plains Transportation Institute at North Dakota State University. His research interests include the influences of land use on travel and physical activity, and transportation planning. Patricia L. Mokhtarian is a professor of Civil and Environmental Engineering, Chair of the interdisciplinary Transportation Technology and Policy graduate program, and Associate Director for Education of the Institute of Transportation Studies at the University of California, Davis. She specializes in the study of travel behavior. Susan L. Handy is a professor in the Department of Environmental Science and Policy and Director of the Sustainable Transportation Center at the University of California, Davis. Her research interests center around the relationships between transportation and land use, particularly the impact of neighborhood design on travel behavior. 相似文献
Susan L. HandyEmail: |
Xinyu (Jason) Cao is a research fellow in the Upper Great Plains Transportation Institute at North Dakota State University. His research interests include the influences of land use on travel and physical activity, and transportation planning. Patricia L. Mokhtarian is a professor of Civil and Environmental Engineering, Chair of the interdisciplinary Transportation Technology and Policy graduate program, and Associate Director for Education of the Institute of Transportation Studies at the University of California, Davis. She specializes in the study of travel behavior. Susan L. Handy is a professor in the Department of Environmental Science and Policy and Director of the Sustainable Transportation Center at the University of California, Davis. Her research interests center around the relationships between transportation and land use, particularly the impact of neighborhood design on travel behavior. 相似文献
8.
Transport models, philosophy and language 总被引:1,自引:0,他引:1
Paul Timms 《Transportation》2008,35(3):395-410
The aim of this paper is to encourage debate about the nature of transport modelling. It does so firstly by considering the
underlying philosophies of science (apparently) adopted by transport modellers, over a period of more than 50 years, from
the 1950s until the present day. The conclusion is that a new philosophy of science needs to be developed, which is more in
tune with how transport modelling is actually carried out (as opposed to how early transport modellers thought it ought to
be carried out). It is recommended that such a new philosophy perceives transport modelling as a linguistic activity within
the overall context of transport planning, which is in turn considered as a communication process. The paper outlines three
main approaches that could be taken in this respect, analysing transport models from metaphorical, narrative and aesthetic
perspectives. Conclusions are drawn upon the possible future research directions that might follow from the analysis provided
in the paper, emphasising the importance of bringing formal philosophical thinking into transport modelling research and practice.
Paul Timms is a Senior Research Fellow at the Institute for Transport Studies, University of Leeds. He has been involved for 20 years in research covering a wide range of transport modelling (from traffic signals to world futures), applied to various locations in Europe, Asia and Latin America. 相似文献
Paul TimmsEmail: |
Paul Timms is a Senior Research Fellow at the Institute for Transport Studies, University of Leeds. He has been involved for 20 years in research covering a wide range of transport modelling (from traffic signals to world futures), applied to various locations in Europe, Asia and Latin America. 相似文献
9.
This study introduces the concept of loss aversion to consumer behavioral intention at the personal psychological level to
develop an integrative structural equation model for analyzing traveler psychological decision making. In this model, the
relationship between behavioral intention and service quality is a non-smooth function based on the theory of loss aversion.
The expectation service quality in the SERVQUAL model proposed by Parasuraman, Zeithaml, and Berry (PZB) serves as a reference
point. This model can be applied to analyze the effect of non-smooth response of behavioral intention to service quality in
a traveler psychological decision-making process model. Intercity travel among cities in Taiwan is used as an empirical example.
Data were gathered in cities in Taiwan via a questionnaire survey, and the model was tested using path analysis performed
by LISREL. The empirical result shows that all causal relationships are statistically significant. Service quality loss influences
repurchase intention more than does Service quality gain. Finally, this study concludes by discussing managerial implications
and suggesting directions for future research.
相似文献
Jiun-Hung LinEmail: |
10.
Transportation and land-use preferences and residents’ neighborhood choices: the sufficiency of compact development in the Atlanta region 总被引:1,自引:0,他引:1
This paper analyzes the transportation and land-use preference and actual neighborhood choices of a sample of 1,455 residents
of metro Atlanta. We develop a stated-preference scale on which desires for neighborhood type are gauged, from preferences
for low-density, auto-oriented environments to desires for compact, walkable, and transit-oriented neighborhoods. This scale
is then related to desires for change in one’s own neighborhood characteristics after a hypothetical move. If all neighborhood
preferences were equally likely to be satisfied, then neighborhood preferences would not be correlated with a desire for change.
By contrast, in the current study, stronger preferences for a more walkable environment are associated with greater desire
for change in one’s neighborhood characteristics. This suggests an undersupply of compact, walkable, and transit-friendly
neighborhood types relative to current demand.
相似文献
Lawrence D. Frank (Corresponding author)Email: |
11.
In this paper, we used the 10-wave Puget Sound Panel Dataset to investigate the response lag of a significant change in discretionary
time use. In particular, we want to quantify the relative magnitude of the following factors: the built environment, family
and social obligations, temporal constraints, or a psychological delay factor (people delay a behavioral change until the
next life shock). To answer this question, we developed a survival model to treat (1) left-censoring, (2) partial observation,
and (3) multi-type exits. The results suggest that family and social obligations, as well as temporal constraints, appear
to play a more important role than the built environment. Support for the psychological delay factor is not evident. We also
found that the probability of having a significant change in discretionary time use is negatively related to time progression,
supporting the human adaptivity hypothesis.
Cynthia Chen is an assistant professor of Civil Engineering at the City College of New York. Her recent research interests have been in travel behavior dynamics and residential search and location process. Jason Chen is a Ph.D. candidate in the department of civil engineering at the City University of New York. His research interests include travel behavior analysis, travel demand modeling, and residential location analysis. 相似文献
Jason ChenEmail: |
Cynthia Chen is an assistant professor of Civil Engineering at the City College of New York. Her recent research interests have been in travel behavior dynamics and residential search and location process. Jason Chen is a Ph.D. candidate in the department of civil engineering at the City University of New York. His research interests include travel behavior analysis, travel demand modeling, and residential location analysis. 相似文献
12.
Residential location,vehicle ownership and travel in Asia: a comparative analysis of Kei-Han-Shin and Kuala Lumpur metropolitan areas 总被引:1,自引:1,他引:0
The study examines the relationships between residential location, vehicle ownership and mobility in two metropolitan areas
of Asia, Kei-Han-Shin area of Japan and Kuala Lumpur area of Malaysia. It shows that, behind apparent similarities of household
auto ownership and travel time expenditure per household member, there are many causal relationships that are distinct between
the areas. The similarities and differences between the two areas point to the conjecture that the evolution of a metropolitan
area may be unique and path dependent, being heavily influenced by the history and culture of the locale, spatial and geographical
constraints, and historical progression in infrastructure development.
Metin Senbil is an Associate Professor in City and Regional Planning Department at Gazi University in Ankara, Turkey. He obtained the degree of Doctor of Engineering from Kyoto University, Japan. His research interests cover different aspects of urban travel demand and its interactions with telecommunications, land use, and policies directed at controlling as well as managing travel demand. Ryuichi Kitamura is Professor of Civil Engineering Systems at Kyoto University, Japan. His past research effort spans in the area of travel behavior analysis and demand forecasting, in particular in activity-based analysis, and panel surveys and dynamic analysis of travel behavior. He is associate editor of Transportation. Dr Jamilah Mohamad is Professor and Head of the Department of Geography, University of Malaya, Kuala Lumpur. Her main fields of research interest are travel behavior, the relationship between transport and spatial development and urban growth management. 相似文献
Jamilah MohamadEmail: |
Metin Senbil is an Associate Professor in City and Regional Planning Department at Gazi University in Ankara, Turkey. He obtained the degree of Doctor of Engineering from Kyoto University, Japan. His research interests cover different aspects of urban travel demand and its interactions with telecommunications, land use, and policies directed at controlling as well as managing travel demand. Ryuichi Kitamura is Professor of Civil Engineering Systems at Kyoto University, Japan. His past research effort spans in the area of travel behavior analysis and demand forecasting, in particular in activity-based analysis, and panel surveys and dynamic analysis of travel behavior. He is associate editor of Transportation. Dr Jamilah Mohamad is Professor and Head of the Department of Geography, University of Malaya, Kuala Lumpur. Her main fields of research interest are travel behavior, the relationship between transport and spatial development and urban growth management. 相似文献
13.
Gerard de Jong Andrew Daly Marits Pieters Stephen Miller Ronald Plasmeijer Frank Hofman 《Transportation》2007,34(4):375-395
This paper provides a review of transport model applications that not only provide a central traffic forecast (or forecasts
for a few scenarios), but also quantify the uncertainty in the traffic forecasts in the form of a confidence interval or related
measures. Both uncertainty that results from using uncertain inputs (e.g. on income) and uncertainty in the model itself are
treated. The paper goes on to describe the methods used and the results obtained for a case study in quantifying uncertainty
in traffic forecasts in The Netherlands.
相似文献
Gerard de JongEmail: |
14.
Annual electric bike (e-bike) sales in China grew from 40,000 in 1998 to 10 million in 2005. This rapid transition from human-powered
bicycles, buses and gasoline-powered scooters to an all-electric vehicle/fuel technology system is special in the evolution
of transportation technology and, thus far, unique to China. We examine how and why e-bikes developed so quickly in China
with particular focus on the key technical, economic, and political factors involved. This case study provides important insights
to policy makers in China and abroad on how timely regulatory policy can change the purchase choice of millions and create
a new mode of transportation. These lessons are especially important to China as it embarks on a large-scale transition to
personal vehicles, but also to other countries seeking more sustainable forms of transportation.
相似文献
Christopher CherryEmail: |
15.
Katrin Dziekan 《Transportation》2008,35(4):519-538
This paper studies the memory representations of residents regarding the public transport system in their city. Telephone
interviews were conducted with a representative sample of 204 inhabitants in a selected residential inner-city area in Stockholm.
Route knowledge questions, recognition tasks, free-recall tasks and estimations of service frequency were used to explore
memory representations. The results showed that, in general, residents in metropolitan areas have good knowledge of the public
transport options along well-known transport corridors. The memory representation of lesser-known transport corridors tends
to be of a poorer quality. In the results presented here, the variables gender, age, employment status, level of education
and car availability had no correlation with the quality of the memory representation, but experience increased knowledge.
Although frequent users of public transport had a more detailed representation of the system, the less frequent users also
had a considerable- and good-memory representation. An explorative hierarchy for representation of public transport lines
in the memory is proposed. It is hypothesised that memory representations of a transport line can be affected by the following
three factors: the extent to which a line is visible in the urban area, the straightness of the routes and whether or not
stops are labelled, for example, by destination area. Simply put, these factors determine how well a person knows a line.
It was found that people first remember a commuter train and a trunk bus line, followed by metro lines and suburban buses
and finally normal inner-city buses with the poorest anchorage in memory.
相似文献
Katrin DziekanEmail: |
16.
Market segmentation studies in travel behavior research are ordinarily based on socioeconomic characteristics and personality
traits. This study explores the usefulness of a different approach, where the actual overall mobility levels across different
ground transportation modes, along with desired changes in the use of cars and transit, are used as clustering variables.
Using a given mode can in fact influence the personal representation of that mode, which in turn has been proven to be a key
element in transport behaviours. We form such multimodality-based clusters from two field studies, one involving employees
of the French transportation research institute INRETS and the other a representative sample of residents of the US San Francisco
Bay Area. We find that strong users of a given mode would like to bring more balance to their “modal consumptions” by decreasing
the use of this mode more than the average, and increasing the use of the alternative mode. However, concerning ground transport
travel budgets, the desire to travel more (or less) overall seems less strongly related to the composition of the modal balance. The US dataset shows also a greater latent demand for
travel than the French one. Socioeconomic characteristics of the clusters could not explain the patterns that were found,
confirming the importance of taking into account multimodality issues in travel behavior research. Some policy implications
from these findings are finally reported.
相似文献
Patricia L. MokhtarianEmail: |
17.
Analysis of household activity scheduling has to date been limited to one-day periods. This paper extends the study of household
task allocation to a one-week period. Using a one-week time use survey held under couples in The Netherlands in 2003, the
paper proposes indicators for measuring task allocation on a daily and weekly scale and investigates to what extent role expectations,
work status and indicators of time pressure influence task allocation patterns. The outcomes suggest that egalitarian role
expectations and higher female work status lead to a more balanced allocation of work and households tasks between spouses.
More traditional role views and increased time pressure lead to more specialisation and inequality between spouses. Interestingly,
households under time pressure apply day-to-day specialisation to arrive at balanced weekly allocation totals.
相似文献
Tanja van der LippeEmail: |
18.
Railway reforms: do they influence operating efficiency? 总被引:1,自引:0,他引:1
This paper considers railway operations in 23 European countries during 1995–2001, where a series of reform initiatives were
launched by the European Commission, and analyses whether these reform initiatives improved the efficiency of the railway
systems. Efficiency is measured using Multi-directional Efficiency Analysis, which enables investigation of how railway reforms
affect the inefficiencies of specific cost drivers. The main findings are that the reform initiatives generally improve technical
efficiency but potentially differently for different cost drivers. Specifically, the paper provides empirical evidence that
accounting separation is important for improving the efficiency in the use of both material and staff costs, whereas other
reforms only influenced one of these factors.
Mette Asmild is Associate Professor in Operational Research at Warwick Business School (UK). Her main research interests are theoretical developments and practical applications of efficiency and productivity analysis techniques, particularly Data Envelopment Analysis. Torben Holvad is Economic Adviser at the European Railway Agency (France), senior research associate at the Transport Studies Unit (University of Oxford) and external associate professor at the Department of Transport (Danish Technical University). He obtained Economics degrees from Copenhagen University (MSc) and the European University Institute in Florence (PhD). Jens Leth Hougaard is Professor in Applied Microeconomics at Department of Food and Resource Economics, University of Copenhagen. His main research interests are related to applied microeconomics and include Efficiency Analysis and Benchmarking. Currently, he is working with cost sharing methods and allocation in networks. Dorte Kronborg is MSc in mathematical statistics from the University of Aarhus and Associate Professor at Center for Statistics, Department of Finance, Copenhagen Business School. Her primary research interests are applications and development of mathematical statistical methods within business economics. 相似文献
Dorte KronborgEmail: |
Mette Asmild is Associate Professor in Operational Research at Warwick Business School (UK). Her main research interests are theoretical developments and practical applications of efficiency and productivity analysis techniques, particularly Data Envelopment Analysis. Torben Holvad is Economic Adviser at the European Railway Agency (France), senior research associate at the Transport Studies Unit (University of Oxford) and external associate professor at the Department of Transport (Danish Technical University). He obtained Economics degrees from Copenhagen University (MSc) and the European University Institute in Florence (PhD). Jens Leth Hougaard is Professor in Applied Microeconomics at Department of Food and Resource Economics, University of Copenhagen. His main research interests are related to applied microeconomics and include Efficiency Analysis and Benchmarking. Currently, he is working with cost sharing methods and allocation in networks. Dorte Kronborg is MSc in mathematical statistics from the University of Aarhus and Associate Professor at Center for Statistics, Department of Finance, Copenhagen Business School. Her primary research interests are applications and development of mathematical statistical methods within business economics. 相似文献
19.
This paper suggests using a proportional hazard model to predict personal income, for the purpose of imputing missing income
data in household travel surveys. The model has a hazard function that comprises two multiplicative components: (1) a non-parametric
baseline hazard function that is dependent only on the income level and (2) a function that is dependent only on the other
personal attributes of the survey respondents (excluding income). To estimate and validate the model, data is drawn from a
travel characteristics survey conducted in Hong Kong in year 2001. The model is found to have a much higher accuracy when
compared with a conventional ordered probit model based on the assumption that the logarithm of income is normally distributed.
C.·O. Tong is an Associate Professor at the Department of Civil Engineering, The University of Hong Kong. He received his B.Sc. (Eng.) degree from the University of Hong Kong, M.Sc. (Transportation Engineering) degree from Leeds University and Ph.D. degree from Monash University. His research interests are in transport demand modeling and dynamic network modeling. Jackie K. L. Lee worked as a Research Assistant at the Department of Civil Engineering, The University of Hong Kong during the period from March 2004 to April 2005. She received her B.Eng. and M.Eng. degrees in Civil Engineering from the Hong Kong Polytechnic University. She is a Chartered Engineer and is also Corporate Members of the Hong Kong Institution of Engineers and the Institution of Structural Engineers. 相似文献
C. O. TongEmail: |
C.·O. Tong is an Associate Professor at the Department of Civil Engineering, The University of Hong Kong. He received his B.Sc. (Eng.) degree from the University of Hong Kong, M.Sc. (Transportation Engineering) degree from Leeds University and Ph.D. degree from Monash University. His research interests are in transport demand modeling and dynamic network modeling. Jackie K. L. Lee worked as a Research Assistant at the Department of Civil Engineering, The University of Hong Kong during the period from March 2004 to April 2005. She received her B.Eng. and M.Eng. degrees in Civil Engineering from the Hong Kong Polytechnic University. She is a Chartered Engineer and is also Corporate Members of the Hong Kong Institution of Engineers and the Institution of Structural Engineers. 相似文献
20.
Nature or nurture: why do railroads carry greater freight share in the United States than in Europe? 总被引:1,自引:0,他引:1
During the 1950s, the share of freight carried by railroads was similar and declining in both the United States and Europe.
By 2000, the railroads’ share of freight (measured in ton–kilometers) had reached 38% in the United States while falling to
8% in Europe. This paper examines the reasons for the difference in rail’s share of freight in Europe and the United States.
We find that almost 83% of the gap in 2000 is probably due to natural or inherent differences, principally geography, shipment
distance, and commodity mix. However, 17% of the gap cannot be explained by these inherent differences and is presumably due
to public policies including priority of passenger service, lack of interoperability at borders, service quality and rates,
and incentives of the rail operators. We estimate that if that policy gap were closed, railroads’ share of freight in Europe
would increase from 8% to 13%.
相似文献
Mark FaganEmail: |