We present a hybrid method to speed up the Monte Carlo simulation of diffuse reflectance from a multi-layered tissue model with finite-size tumor-like heterogeneities. The proposed method consists of two steps. In the first step, a set of photon trajectory information generated from a baseline Monte Carlo simulation is utilized to scale the exit weight and exit distance of survival photons for ...

This paper presents a new method for characterizing brain responses in both PET and fMRI data. The aim is to capture the correlations between the scans of an experiment and a set of external predictor variables that are thought to affect the scans, such as type, intensity, or shape of stimulus response. Its main feature is a Canonical Variates Analysis (CVA) of the estimated effects of the pred...

This paper presents a new method for characterizing brain responses in both PET and fMRI data. The aim is to capture the correlations between the scans of an experiment and a set of external predictor variables that are thought to affect the scans, such as type, intensity, or shape of stimulus response. Its main feature is a Canonical Variates Analysis (CVA) of the estimated effects of the pred...

This paper presents a new method for characterizing brain responses in both PET and fMRI data. The aim is to capture the correlations between the scans of an experiment and a set of external predictor variables that are thought to aaect the scans, such as type, intensity, or shape of stimulus response. Its main feature is a Canonical Variates Analysis (CVA) of the estimated eeects of the predic...

A formal specification of a multi-level marketing (MLM) business is presented. Specifying a MLM business boils down to specifying properties of and operations on mathematical forests and trees. The usefulness of the model-based specification language, Z, is investigated as a vehicle for a formal specification of these recursive structures. The specification is presented following a prescribed f...

Forest height is an essential parameter used to derive important information about forest ecosystems, such as above-ground biomass. In this article, a estimation approach combining P-band and X-band interferometric synthetic aperture radar (InSAR) was introduced. The estimated using the difference in penetration of long- short-wavelength radars forest. That is, InSAR data were extract digital t...

We refine an active-database application taxonomy, proposed by Stonebraker, to include monotonic log monitoring applications (MLM). MLMs are a subclass of hard rule systems where triggering events are restricted to monotonic relations. We develop a formal semantic model for the MLM class. We then prove the correctness of concurrency schemes for applications within the model. Our results demonst...

The extraction of social groups from social networks existing among employees in the company, its customers or users of various computer systems became one of the research areas of growing importance. Once we have discovered the groups, we can utilise them, in different kinds of recommender systems or in the analysis of the team structure and communication within a given population. The shortco...

Animating in real-time complex and realistic virtual garments on top of an animated character is a long-standing challenge in the computer graphics field. Animated garments are subject to large dynamic deformations, exhibiting complex wrinkling patterns related to their length preserving behavior and multiple, long-lasting contacts with the underlying body. One of the most complex cloth animati...

In communications theory, Nakagami distribution (NKD) is used to model scattered signals that reach a receiver from different paths. In order to use NKD to model a given set of data, we will have to estimate its parameters from the given data. Method of L-Moments (MLM) is being compared with Method of Moments (MOM) for estimating the parameters of NKD. In this study, we have derived its first t...