John Polak
YOU?
Author Swipe
View article: Valuation of travel time savings in the presence of simultaneous activities
Valuation of travel time savings in the presence of simultaneous activities Open
Time sharing between activities remains an indispensable part of everyday activity pattern. However, the issue has not yet been fully acknowledged within the existing time allocation models, potentially resulting in inaccuracies in valuing…
View article: Optimal Pricing of Vehicle-to-Grid Services Using Disaggregate Demand Models
Optimal Pricing of Vehicle-to-Grid Services Using Disaggregate Demand Models Open
The recent revolution in electric mobility is both crucial and promising in the coordinated effort to reduce global emissions and tackle climate change. However, mass electrification brings up new technical problems that need to be solved.…
View article: Measuring social, environmental and health inequalities using deep learning and street imagery
Measuring social, environmental and health inequalities using deep learning and street imagery Open
Cities are home to an increasing majority of the world’s population. Currently, it is difficult to track social, economic, environmental and health outcomes in cities with high spatial and temporal resolution, needed to evaluate policies r…
View article: Valuing portfolios of interdependent real options under exogenous and endogenous uncertainties
Valuing portfolios of interdependent real options under exogenous and endogenous uncertainties Open
Although the value of portfolios of real options is often affected by both exogenous and endogenous sources of uncertainty, most existing valuation approaches consider only the former and neglect the latter. In this paper, we introduce an …
View article: Dimension Reduction for Origin-Destination Flow Estimation: Blind Estimation Made Possible
Dimension Reduction for Origin-Destination Flow Estimation: Blind Estimation Made Possible Open
This paper studies the problem of estimating origin-destination (OD) flows from link flows. As the number of link flows is typically much less than that of OD flows, the inverse problem is severely ill-posed and hence prior information is …
View article: Urban link travel time estimation using traffic states‐based data fusion
Urban link travel time estimation using traffic states‐based data fusion Open
Estimated travel time is a key input for many intelligent transport systems (ITS) applications and traffic management functions. There are numerous studies that show that fusing data from different sources such as global positioning system…
View article: Inverse discrete choice modelling: theoretical and practical considerations for imputing respondent attributes from the patterns of observed choices
Inverse discrete choice modelling: theoretical and practical considerations for imputing respondent attributes from the patterns of observed choices Open
The growing availability of geotagged big data has stimulated substantial discussion regarding their usability in detailed travel behaviour analysis. Whilst providing a large amount of spatio-temporal information about travel behaviour, th…
View article: Incorporating online shopping into travel demand modelling: challenges, progress, and opportunities
Incorporating online shopping into travel demand modelling: challenges, progress, and opportunities Open
There is a large body of literature, spanning multiple disciplines, concerned with the relationship between traditional (physical) shopping and associated travel behaviour. However, despite the recent rapid growth of digital retailing and …
View article: Response of electric vehicle drivers to dynamic pricing of parking and charging services: Risky choice in early reservations
Response of electric vehicle drivers to dynamic pricing of parking and charging services: Risky choice in early reservations Open
When clusters of electric vehicles charge simultaneously in urban areas, the capacity of the power network might not be adequate to accommodate the additional electricity demand. Recent studies suggest that real-time control strategies, li…
View article: Development of joint models for channel, store, and travel mode choice: Grocery shopping in London
Development of joint models for channel, store, and travel mode choice: Grocery shopping in London Open
The nature of shopping activity is changing in response to innovation in retailing and the growth in online channels. There is a growing interest from transport researchers, policy makers, marketing and retail businesses in understanding t…
View article: How Is Ict Use Linked To Household Transport Expenditure? A Cross-National Macro Analysis Of The Influence Of Home Broadband Access
How Is Ict Use Linked To Household Transport Expenditure? A Cross-National Macro Analysis Of The Influence Of Home Broadband Access Open
Dataset used for analysis in the paper. ABSTRACT: Understanding of the interactions between Information and Communication Technologies (ICT) and physical mobility is a major area of research with practical applications in a number of field…
View article: Modelling electric vehicles use: a survey on the methods
Modelling electric vehicles use: a survey on the methods Open
In the literature electric vehicle use is modelled using of a variety of approaches in power systems, energy and environmental analyses as well as in travel demand analysis. This paper provides a systematic review of these diverse approach…