217 research outputs found
An Exact Solution of BPS Domain Wall Junction
An exact solution of domain wall junction is obtained in a four-dimensional
N=1 supersymmetric U(1) X U(1)' gauge theory with three pairs of chiral
superfields which is motivated by the N=2 SU(2) gauge theory with one flavor
perturbed by an adjoint scalar mass. The solution allows us to evaluate various
quantities including a new central charge Y_k associated with the junction
besides Z_k which appears already in domain walls. We find that the new central
charge Y_k gives a negative contribution to the mass of the domain wall
junction whereas the central charge Z_k gives a dominant positive contribution.
One has to be cautious to identify the central charge Y_k alone as the mass of
the junction.Comment: LaTeX file, 13 page, 1 ps figur
An Eye-Contour Extraction Algorithm from Face Image usingDeformable Template Matching
A variety of studies on face components such as eyes, lips, noses, and teeth have been proceeding in medicine, psychology, biometrics authentication, and other areas. In this paper, we present an algorithm of extracting eye contours from a face image using the deformable template matching method. Our template for an eye contour is composed of three quadratic functions for the perimeter and one circle for the pupil. In our algorithm, a digital color face image is rst converted to a binary image of representing eyes, after the region around eyes is identied on the face image by using hues and values of the color
image. Then, parameters in the template are optimized by a local search method with a tabu period and a hill-climbing, so as to t the template to the eye contour in the binary
image. The accuracy of our algorithm is evaluated through sample face images of students.
In addition, the application of our proposal to eye shape indices is investigated in a face image database "HOIP", where recognizable dierence exists in index distributions between males and females
Walking Support and Power Assistance of a Wheelchair Typed Omnidirectional Mobile Robot with Admittance Control
Promising Effect of Visually-Assisted Motor Imagery Against Arthrogenic Muscle Inhibition - A Human Experimental Pain Study
Detection of altered pain facilitatory and inhibitory mechanisms in patients with knee osteoarthritis by using a simple bedside tool kit (QuantiPain)
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