Although ray tracing based propagation prediction models are popular for indoor radio wave propagation characterization, most of them do not provide an integrated approach for achieving the goal of optimum coverage, which is a key part in designing wireless network. In this paper, an accelerated technique of three-dimensional ray tracing is presented, where rough surface scattering is included ...

Contact tracing is an important control strategy for containing Ebola epidemics. From a modeling perspective, explicitly incorporating contact tracing with disease dynamics presents challenges, and population level effects of contact tracing are difficult to determine. In this work, we formulate and analyze a mechanistic SEIR type outbreak model which considers the key features of contact traci...

In the context of secure content distribution, the content is encrypted and then broadcasted in a public channel, each legitimate user is provided a decoder and a secret key for decrypting the received signals. One of the main threat for such a system is that the decoder can be cloned and then sold out with the pirate secret keys. Traitor tracing allows the authority to identify the malicious u...

BACKGROUND Loss to follow-up is a major challenge of antiretroviral treatment (ART) programs in sub-Saharan Africa. Our objective was to a) determine true outcomes of patients lost to follow-up (LTFU) and b) identify risk factors associated with successful tracing and deaths of patients LTFU from ART in a large public sector clinic in Lilongwe, Malawi. METHODS Patients who were more than 2 we...

This dissertation presents an approach for interactive, physically exact simulation of specular reflections and specular refractions in virtual environments. The introduced approach is called Vertex Tracing and allows a hybrid rendering to add global illumination effects in traditional hardware rendering systems. The core of the Vertex Tracing is an adaptive progressive ray tracing. In contrast...

Human sensory inputs and motor outputs mutually affect one another. We pursue the idea that a tactile interface can influence human motor outputs by intervening in sensory-motor relationships. This study focuses on the shear deformation of a finger pad while a person traces a line or circle. During these tracing movements, the finger pads were deformed using a tactile interface. The tracing dis...

In this paper, we present an e cient particle tracing method for interactive walk-through in a large environment. The e ciency is derived using the concept of importance similar to that used in importance driven radiosity. We propose the importance driven particle tracing as an add-on module to the standard particle tracing process, which is activated on demand as the user walks-through from on...

This chapter surveys the issues of collecting monitoring data for performance debugging of parallel programs executed in cluster environments. The main categories of monitoring tools are either clock driven or event driven, the latter including timing, counting or tracing. The paper focuses on software tracing, deemed the most general and portable event driven monitoring technique. The lack of ...

In this present era , a fair transmission pricing scheme is an important issue due to incresed deregulation and restructuring of power sector. In this view, issue of tracing the flow of electricity has been gain importance as its solution helps in evaluating a fair and transparent tariff.An electricity tracing method would make it possible to charge the generators and/or consumers on the basis ...

A novel framework for robust 3D tracing in electron micrographs is presented. The proposed framework is built using ideas from hypergraph diffusion, and achieves two main objectives. Firstly, the approach scales to trace hundreds of targets without noticeable increase in runtime complexity. Secondly, the framework yields flexibility to fuse top down (global cues as hyperedges) and bottom up (lo...