Modelling transport energy demand : a socio-technical approach

Peer reviewedPostprin

The UK Transport Carbon Model : An integrated life cycle approach to explore low carbon futures

Peer reviewedPostprin

Public transport values of time

This paper reports research on the valuations of public transport time relative to car travel time and on the valuations of the walk time, wait time and service headway associated with public transport use. The results are derived from a meta-analysis of a very large data set of British empirical evidence and are set against a review of previous research. A large number of methodological and policy relevant results emerge, some of which challenge established conventions, and the implications for value of time recommendations, policy and further research are spelt out

NEW SP-VALUES OF TIME AND RELIABILITY FOR FREIGHT TRANSPORT IN THE NETHERLANDS

Abstract This paper discusses the methods used in a study on the values of time and reliability in freight transport in the Netherlands. SP surveys were carried out among more than 800 shippers and carriers. A novel feature is that both for the value of time and reliability two additive components are distinguished: a transport cost and a cargo component. Specific instructions were given to make sure that the carriers provide the former and shippers that contract out the latter component. The resulting values that will be used in CBA in The Netherlands are presented and compared against the international literature. Highlights Two components in the VOT and VOR are distinguished: the transport cost and the cargo component. Specific instructions are given to shippers that contract out and carriers in the SP so that their values of time and reliability will be the cargo and the transport cost component respectively and become additive. Presentation of reliability in the form of five equi-probable transport and arrival times. Estimation of a VOR in using the standard deviation of transport time in the utility function, which has been uncommon in freight transport, but can relatively easily be included in forecasting models. New SP context for sea and inland waterway transport. The data set used possibly is the largest SP survey carried out in freight transport (in terms of number of interviews). Presentation of new values for The Netherlands (which other countries can use for comparison, benchmarking or even value transfer) and comparison with the existing literature

SIRF: Synergistic Image Reconstruction Framework

The combination of positron emission tomography (PET) with magnetic resonance (MR) imaging opens the way to more accurate diagnosis and improved patient management. At present, the data acquired by PET-MR scanners are essentially processed separately, but the opportunity to improve accuracy of the tomographic reconstruction via synergy of the two imaging techniques is an active area of research. In this paper, we present Release 2.1.0 of the CCP-PETMR Synergistic Image Reconstruction Framework (SIRF) software suite, providing an open-source software platform for efficient implementation and validation of novel reconstruction algorithms. SIRF provides user-friendly Python and MATLAB interfaces built on top of C++ libraries. SIRF uses advanced PET and MR reconstruction software packages and tools. Currently, for PET this is Software for Tomographic Image Reconstruction (STIR); for MR, Gadgetron and ISMRMRD; and for image registration tools, NiftyReg. The software aims to be capable of reconstructing images from acquired scanner data, whilst being simple enough to be used for educational purposes. The most recent version of the software can be downloaded from http://www.ccppetmr.ac.uk/downloads and https://github.com/CCPPETMR/