S. K. Peer

Learn More
Compression of the cervical spinal cord during neck movements ("flexion myelopathy") was proposed to be the main pathomechanism of juvenile asymmetric spinal muscular atrophy (JASSMA). We present 3 patients with the clinical appearance of JASSMA and typical high-intensity signals in the anterior horn cell region of the lower cervical spinal cord(More)
travel decisions at the level of the individual traveler facilitates more precise predictions of travelers' responses to transport policies, and thus more accurate policy appraisals. This thesis investigates how commuters make their short-run departure time choices and long-run travel routine choices in the face of recurrent and non-recurrent congestion.(More)
BACKGROUND AND PURPOSE Injection therapies play a major role in the treatment of lower back pain and are to date performed mainly under CT- or fluoroscopic guidance. We conducted this study to evaluate the accuracy, time savings, radiation doses, and pain relief of US-guided pararadicular injections versus CT-controlled interventions in the lumbar spine in(More)
BACKGROUND AND PURPOSE Injection therapies play a major role in the treatment of lower back pain and are to date performed mainly under CT or fluoroscopic guidance. The benefits of US-guided instillation procedures have been shown in many studies. We conducted this study to simplify an US-guided approach to the lumbar spinal nerves and to assess the(More)
The goal of this paper is to develop an econometric model that can be used to predict travel time variability for cost-benefit-analysis (CBA). The model explains travel time variability by the size of (mean) delays, as well as by other time-variant and invariant road characteristics. The data set used for the analysis is based on travel time data of 146(More)
Duisenberg school of finance is a collaboration of the Dutch financial sector and universities, with the ambition to support innovative research and offer top quality academic education in core areas of finance. Abstract We consider equilibrium and optimum use of a Vickrey road bottleneck, distinguishing between long-run and short-run scheduling preferences(More)
Duisenberg school of finance is a collaboration of the Dutch financial sector and universities, with the ambition to support innovative research and offer top quality academic education in core areas of finance. Abstract A common way to determine values of travel time and schedule delay is by estimating departure time choice models using revealed preference(More)