An efficient measurement methodology is proposed to construct the scattering parameters of a multi-port device using a four-port vector network analyzer (VNA) without the external un-terminated ports. By using the four-port VNA, the reflected waves from the un-terminated ports could be minimized. The proposed method significantly enhances the accuracy of the S-parameters with less number of mea...

This paper concerns the reconstruction of the absorption and scattering parameters in a time-dependent linear transport equation from full knowledge of the albedo operator at the boundary of a bounded domain of interest. We present optimal stability results on the reconstruction of the absorption and scattering parameters for a given error in the measured albedo operator.

The presence of abnormalities in the vocal system affects the quality of the voice and changes its characteristics. Digital analysis of pathological voices can be an effective and non-invasive tool for the detection of such alterations. This paper proposes a wavelet-based method to distinguish between normal and disordered voices. Wavelet filter banks are used in conjunction with support vector...

Gillette Gait Index (GGI) is a very useful tool to assess gait abnormalities. However, it seems that it has only been validated in children with cerebral palsy. Nevertheless, the parameters used to compute GGI are not specific to children population. Our aim is to demonstrate that GGI could also be used to evaluate adults gait abnormalities. 44 adults (25 healthy and 19 pathological) participat...

A concept recently developed by scholars in psychology and biology is “pathological altruism.” (Oakley 2013, Oakley et al. 2012). A pathological altruist is defined as “a person who sincerely engages in what he or she intends to be altruistic acts, but who harms the very person or group he or she is trying to help, often in unanticipated fashion; or harms others; or irrationally becomes a victi...

Purpose This study aimed to evaluate the difference of mass in dynamic contrast enhanced magnetic resonance imaging (DCE-MRI) characteristics between low-risk and non-low-risk breast cancers and to explore the possible pathological basis. Materials and Methods Approval from the institutional review board and informed consent were acquired for this study. The MR images of 104 patients with pat...

Introduction We investigate discovery in pharmacology by following and analyzing the progress of research on drugs for Parkinson’s disease at our local pharmacology department. In pharmacology research detailed knowledge of biological processes is used to provide a rationale for a desired biological activity of a drug. This desired activity should cause a decrease in disease symptoms and is cal...