The row-by-row frontal method may be used to solve general large sparse linear systems of equations. By partitioning the matrix into (nearly) independent blocks and applying the frontal method to each block, a coarse-grained parallel frontal algorithm is obtained. The success of this approach depends on preordering the matrix. This can be done in two stages, (1) order the matrix to bordered blo...

Computerized arrhythmia monitors recognize only a few of the significant arrhythmias and generally fail to detect arrhythmias of supraventricular origin. This is because conventional surface leads, which are sufficient for QRS recognition, are highly inadequate for automated P-wave detection. A new two-lead system, which includes a swallowable capsule-electrode for esophageal monitoring of atri...

DESCRIPTION An 87-year-old woman from a nursing homewith a history of ventricular rate responsive demand (VVIR)Microny II SR (St. JudeMedical AB, Järfälla, Sweden) pacemaker insertion for syncope with complete heart block in 2003 was admitted following an episode of loss of consciousness. This occurred as she was being helped to the toilet by two carers each supporting her under one arm. On adm...

We present a dictionary learning algorithm which is tailored to the block-based image prediction problem. More precisely, we learn two related sub-dictionaries Ac and At , the first one (Ac) for approximating known samples in a causal neighborhood of the block to be predicted and the other one (At) to approximate the block to be predicted. These two dictionaries are learned so that representati...

Numerical quantum transport calculations are commonly based on a tight-binding formulation. A wide class of quantum transport algorithms requires the tight-binding Hamiltonian to be in the form of a block-tridiagonal matrix. Here, we develop a matrix reordering algorithm based on graph partitioning techniques that yields the optimal block-tridiagonal form for quantum transport. The reordered Ha...

We study a class of time–domain decomposition based methods for the solution of distributed linear quadratic optimal control problems. Our methods are based on a multiple shooting reformulation of the distributed linear quadratic optimal control problem as a discrete–time optimal control (DTOC) problem in Hilbert space. The optimality conditions for this DTOC problem lead to a linear system wit...

We adapt tools from information theory to analyze how an observer comes to synchronize with the hidden states of a finitary, stationary stochastic process. We show that synchronization is determined by both the process's internal organization and by an observer's model of it. We analyze these components using the convergence of state-block and block-state entropies, comparing them to the previo...

We describe the case of an adult 19 year old male with a fractured right radius. The patient underwent a revision open reduction and internal fixation due to mal-alignment under combined general anaesthesia and supraclavicular brachial plexus block. Postoperatively the patient developed disproportionately intense pain despite an otherwise fully functioning sensory and motor block. The limb was ...