Many low dimensional spin systems with a dimerized or ladder-like antiferromagnetic exchange coupling have a gapped excitation spectrum with magnetic bound states within the spin gap. For spin ladders with an even number of legs the existence of spin gaps and within the t-J model a tendency toward superconductivity with d-wave symmetry is predicted. In the following we will characterize the spi...

An alternative pseudo CT generation method for magnetic resonance image (MRI)-based radiotherapy planning was investigated in the work. A pseudo CT was initially generated using the rigid image registration between the planning MRI and previously acquired diagnostic CT scan. The pseudo CT generated was then refined to have the same morphology with that of the referenced planning image scan by a...

This paper proposes an effective method to extract salient sentences using contextual information and statistical approaches for Text Summarization. The proposed method combines two consecutive sentences into a bi-gram pseudo sentence so that contextual information is applied to statistical sentence-extraction techniques. Salient bigram pseudo sentences are first selected by the statistical sen...

The capability to assess and monitor the state of health (SOH) lithium-based cells is a highly demanded feature for advanced battery management systems. Due existing relation between SOH internal impedance, electrochemical impedance spectroscopy (EIS) methods are adopted diagnosis. Nevertheless, accurate EIS tests demand expensive facilities, long time test procedures, algorithms with high-comp...

Speech is produced by exciting the vocal tract system by an excitation source. The excitation is significant at the instants of glottal closure. These instants of significant excitation are called Epochs. Epochs play a significant role in speech processing and is used are used in many applications. There are different methods for extraction of epochs from speech signal. In this paper we have di...

We present the pseudo-particle multipole method (PM), a new method to handle multipole expansion in fast multipole method and treecode. This method uses a small number of pseudo-particles to express multipole expansion. With this method, the implementation of FMM and treecode with high-order multipole terms is greatly simplified. We applied PM to treecode and combined it with special-purpose co...