An extension of the normalized mutual information similarity measurement was proposed to register cardiac PET/CT and SPECT images representing coronary artery disease in the heart. 23 PET/CT images obtained by a hybrid camera, and their corresponding SPECT were processed. The SPECT was registered to the PET/CT image pairs by a triple NMI based auto-registration. For validation and comparison an...

Designing a collaborative performance requires the use of paradigms and technologies which can deeply influence the whole piece experience. In this paper we define a set of six metrics, and use them to describe and evaluate a number of platforms for participatory performances. Based on this evaluation, the Augmented Stage is introduced. Such concept describes how Augmented Reality techniques ca...

Traditional ab initio electronic structure calculations of periodic systems yield delocalized eigenstates that should be understood as adiabatic states. For example, excitons are bands of extended states which superimpose localized excitations on every lattice site. However, in general, in order to study the effects of nuclear motion on exciton transport, it is standard to work with a localized...

Short-waves modulated by long-waves have been investigated in the glass wave channel at Scripps Institution of Oceanography. Two series of mechanically generated wave trains of different amplitudes and wavelengths were produced consecutively in such a way that they superimpose each other 7.55m from the wave maker. At this location, simultaneous records of wave slope images and the Lagrangian fl...

In this paper, a full-duplex joint communication and localization system with a unified signal structure recently proposed by the authors is investigated. The main idea is to superimpose several data streams used for communication or localization purposes according to the principle of multi-layer interleave-division multiple access (IDMA). At the receiver side, the different data streams are se...

closed kinematic chains and 1 2 ) as a force constrainad mechanical system working on the samo object simultaneously. based on a feedback linearization and simultaneous output docoupling technique. Applying a nonli ear faodback and a nonlinear coordinate transformation, the complicated model of the multiple robot arms in either formulation is converted into a linear and output decoupled system....

Automated detection of anomalies in network traffic is an important and challenging task. In this work we propose an automated system to detect volume-based anomalies in network traffic caused by Denial of Service (DoS) attacks. The system has a two-stage architecture that combines more traditional approaches (Adaptive Threshold and Cumulative Sum) with a novel one based on the Continuous Wavel...

Aspect-oriented languages provide means to superimpose aspectual behavior on a given set of join points. It is possible that not just a single, but several units of aspectual behavior need to be superimposed on the same join point. Aspects that specify the superimposition of these units are said to "share" the same join point. Such shared join points may give rise to issues such as determining ...

The unsupervised detection of hierarchical structures is a major topic in unsupervised learning and one of the key questions in data analysis and representation. We propose a novel algorithm for the problem of learning decision trees for data clustering and related problems. In contrast to many other methods based on successive tree growing and pruning, we propose an ,aL”G.,P 4Lnrt;nn C.-e hM ,...

While the quantification of cell movement within defined biochemical gradients is now possible with microfluidic approaches, translating this capability to biologically relevant three-dimensional microenvironments remains a challenge. We introduce an accessible platform, requiring only standard tools (e.g. pipettes), that provides robust soluble factor control within a three-dimensional biologi...