Fig. 1 Let ABCD be a circumscribed quadrilateral, that is, a quadrilateral which has an incircle. Let this incircle have the centerO and the radius ρ and touch its sides AB, BC, CD, DA at the points X, Y, Z, W, respectively. Then, for some very obvious reasons, OX ⊥ AB, OY ⊥ BC, OZ ⊥ CD, OW ⊥ DA and OX = OY = OZ = OW = ρ. Moreover, AW = AX, BX = BY, CY = CZ, DZ = DW, since the two tangents from...

BACKGROUND AND PURPOSE Early recurrent strokes lead to extended hospitalization and high number of complications. We investigated three stroke scores, the Essen Stroke Risk Score (ESRS), the ABCD(2) and the Recurrence Risk Estimator at 90 days (RRE-90) for their prognostic value to predict early recurrent stroke, death and progressive stroke. METHODS Clinical and radiological data from 1727 c...

In this paper, we address the issue of how the perception of disorderness in selected types of speech disorders may be correlated with the abnormal articulatory structure and with the related acoustic properties. As a first step towards this end we have developed an articulatory synthesizer based on frequency-domain simulation of vocal-tract wave propagation. The synthesizer has been implemente...

In this paper, defected microstrip structure (DMS) is applied to design a compact microstrip rat-race hybrid coupler. The proposed structure introduces both harmonic signal suppression and a significant reduction of size because half of the ring is embedded in upper section. By embedding the DMS, it is observed that the third harmonic signal is suppressed to −25 dB with respect to a conventiona...

A high-aspect-ratio line focus is required on a plane target in x-ray laser experiments for obtaining a high gain-length product. Inherent wave-front aberrations in line-focusing optics, which consist of a cylindrical lens and a spherical lens, are discussed with respect to beam diameter. The nonuniformity of the linewidth that is due to the aberrations is also calculated by the ABCD matrix met...

To find the optimum location of an active device i.e., Gunn diode in the Active tapered Slot-Ring Antenna (ASRA) equivalent {ABCD} matrix parameters has been used, so that the best performance in antenna characteristics is realized in terms of power radiated and power received. Microstrip tapered slotring antenna was fabricated by using a 0.787mm thick Takonic TLY-5-0310-CH/CH substrate with r...

Dental practice is the integral component of the oral health. Though the dental practice is in close relation with that of the medical practice, it has its own distinctiveness in relation to safe practice. The safe dental practice should not only assure good oral and general health but also improve social interaction by enhancing physical appearance, esthetics, etc. For the safe dental practice...

Ensembles of isotropic random matrices are defined by the invariance of the probability measure under the left (and right) multiplication by an arbitrary unitary matrix. We show that the multiplication of large isotropic random matrices is spectrally commutative and self-averaging in the limit of infinite matrix size N→∞. The notion of spectral commutativity means that the eigenvalue density of...

The American Association of Clinical Endocrinologists (AACE) and American College of Endocrinology (ACE) have created a chronic care model, advanced diagnostic framework, clinical practice guidelines, and clinical practice algorithm for the comprehensive management of obesity. This coordinated effort is not solely based on body mass index as in previous models, but emphasizes a complications-ce...

The Rindler spacetime describing a series of accelerating observers is Ricci flat, but it still has novel optical effects. In the case WKB approximation, we derive light geodesics in frame based on covariant wave equation and geodesic equations. Then, use ABCD matrix optics method to explore propagation characteristics frame, thus link three different transformation scenes (geometry, gravity va...