PURPOSE To assess the potential of magnetic resonance angiography (MRA) as an adjunct to spin-echo sequences in evaluating the cerebral vascular anomalies seen in Sturge-Weber syndrome. METHODS Four pediatric patients with Sturge-Weber syndrome were evaluated with conventional MR imaging and with arterial and venous MRA. Resultant images were evaluated for evidence of volume loss, cortical en...

Behavioral, neuropsychological, and brain imaging research points to a dedicated system for processing number that is shared across development and across species. This foundational Approximate Number System (ANS) operates over multiple modalities, forming representations of the number of objects, sounds, or events in a scene. This system is imprecise and hence differs from exact counting. Evid...

In our earlier paper ([AKT1]), by interpreting the formal transformation to the Airy equation near a simple turning point as the symbol of a microdifferential operator, we derived the Voros connection formula or, equivalently, the discontinuity function of a Borel transformed WKB solution at its movable singularities. In this paper we extend this approach to the two turning points problem; by c...

In response to constant criticism that methods for conceptual modeling in information systems lack theoretical foundations, several approaches have been proposed. Among these, ontological approaches have recently received considerable attention. Though MCCARTHY and HAYES already in 1969 had called for ‘‘metaphysically adequate modeling,’’ it was not before 1986 that WAND and WEBER commenced wor...

The recognition limit of luminance difference in the human visual system (HVS) has not been studied systematically. In this paper, surround adapted Weber-Fechner fraction is calculated based on the crispening effect. It is found that surround adapted fractions have reduced to 1/3 of the traditional Weber-Fechner fractions. As compared with Breitmeyer’s experiments, the presented result is a rea...

The aim of the present paper is to study several solution concepts for bicooperative games. For these games introduced by Bilbao [1], we define a one-point solution called the Shapley value, since this value can be interpreted in a similar way to the classical Shapley value for cooperative games. The firs result of the paper is an axiomatic characterization of this value. Next, we define the co...

greatly appreciate comments from Steven Weber.

This paper proposes a method of personal identification based on tongue image. Tongue image have many advantage for personal identification and verification. In this paper a texture tongue features are extracted based on steerable filters and WLD (Weber Law Descriptors) transform. These features can be used in forensic applications and with other robust biometrics features can combined multi mo...

The classical class invariants of Weber are introduced as quotients of Thetanullwerte, enabling the computation of these invariants more efficiently than as quotients of values of the Dedekind η-function. We show also how to compute the unit group of suitable ring class fields by means of proving the fact that most of the invariants introduced by Weber are actually units in the corresponding ri...

We report the case of a 65-year-old man who we thought was an atypical presentation or a variant of the Klippel-Trenaunay-Weber syndrome. Although it is primarily a disorder of infancy and childhood, it has been reported to present in adulthood also. Our case report highlights the need to consider the differential diagnosis of Klippel-Trenaunay-Weber syndrome in patients presenting with suggest...