A level set based detail extraction method from images is presented in this paper. The method uses level set to encode the large-scale variation in the image and extracts detail from this variation. This method can compute the detail from images quite fast. The separated detail can be used for compensating the detail loss in High Dynamic Range (HDR) image compression using global tone mapping a...

Dynamic manipulation of geometrical constructions enabled by a specially designed computational tool, called variation tool, is studied during the implementation of proportional geometric tasks in the classroom. The analysis combined the use of two theoretical frameworks: instrumental genesis and situated abstraction. The Dynamic Manipulation Schemes (DMS) developed by 13-year-old students base...

We describe a scheme by which the nonlinear eld contents of a storage ring can be estimated from the measured acceptance variation near low-order resonances. The method is applied to the KEKKATF damping ring in an attempt to understand its small dynamic aperture. Abstract We describe a scheme by which the nonlinear field contents of a storage ring can be estimated from the measured acceptance v...

A smart meter is resource-constrained device, therefore lightweight cryptographic methods are required. Physical unclonable function(PUF) is promising hardware based lightweight security solution, which makes use of the inherent process variation in semiconductor fabrication process to generate unique ID. This paper presents an PUF based smart meter security with frequency synthesizer(Sx) chain...

In this note, we study Nesterov’s accelerated gradient descent method in an online setting and establish both variational static and dynamic regret bounds using the functional variation, which “match” previous regret bounds in terms of gradient variation. To the best of our knowledge, this is the first work to study Nesterov’s accelerated gradient method in an online setting and our regret boun...

We provide a formal treatment of both static and dynamic portfolio choice using the Disappointment Aversion preferences of Gul (1991), which imply asymmetric aversion to gains versus losses. Our dynamic formulation nests the standard CRRA asset allocation problem as a special case. Using realistic data generating processes, we find reasonable equity portfolio allocations for disappointment aver...

The rescue operations for emergency events usually require multiple emergency departments to cooperate with each other to provide effective and efficient resource allocation plans within a short time limit and dynamically adjust the plans as necessary. In the paper, an agent-based resource allocation approach is proposed to automatically allocate rescue resources to concurrent emergency events ...

We present a parallel approach to analyzing sequence similarity in a set of genomes that employs dynamic load balancing to address the variation in execution time for genes of different lengths and complexity, the variation in processor power in different nodes of the computer cluster, and the variation in other load on the nodes. Our approach executes using MPI on a cluster of computers. We pr...

Human immunodeficiency virus (HIV) transmission models that include variability in sexual behavior over time have shown increased incidence, prevalence, and acute-state transmission rates for a given population risk profile. This raises the question of whether dynamic variation in individual sexual behavior is a real phenomenon that can be observed and measured. To study this dynamic variation,...

Human immunodeficiency virus (HIV) transmission models that include variability in sexual behavior over time have shown increased incidence, prevalence, and acute-state transmission rates for a given population risk profile. This raises the question of whether dynamic variation in individual sexual behavior is a real phenomenon that can be observed and measured. To study this dynamic variation,...