The most accurate classical dose optimization algorithms in HDR brachytherapy strongly depend on an appropriate selection of source dwell positions which fulfill user-defined geometrical boundary conditions which are relative to patient anatomy. Most anatomical situations, such as for prostate and head and neck tumors, are complex and can require geometries with 5-15 catheters with 48 possible ...

We propose a personalized re-ranking algorithm through mining user dwell times derived from a user’s previously online reading or browsing activities. We acquire document level user dwell times via a customized web browser, from which we then infer concept word level user dwell times in order to understand a user’s personal interest. According to the estimated concept word level user dwell time...

Session-based recommendation (SBR) is making item recommendations based on anonymous click behavior. SBR graph neural networks has shown great power in recent years. It can enhance the representation of items a session. The aggregation then used to generate session vector for recommendation. However, existing models rarely consider impact dwell-time data when performing aggregation. contains im...

This paper considers the robust exponential stability issues for a class of uncertain switched neutral system which delays switched according to the switching rule. The system under consideration includes both stable and unstable subsystems. The uncertainties considered in this paper are norm bounded, and possibly time varying. Based on multiple Lyapunov functional approach and dwell-time techn...

Single turnover measurements of a fluorogenic reaction at the surface of a nanoparticle provide a detailed view of reaction dynamics at a catalyst with multiple heterogeneous active sites. This picture must be extracted from a fluorescence trajectory of one particle, which records individual reaction and desorption events. We have previously proposed analyzing fluorescence trajectories with con...

The present study examined the factors that determine the dwell times in a visual search task, that is, the duration the gaze remains fixated on an object. It has been suggested that an item's similarity to the search target should be an important determiner of dwell times, because dwell times are taken to reflect the time needed to reject the item as a distractor, and such discriminations are ...