In this paper, we consider the novel concept of a Radio Frequency (RF) controllable microvalve for di erent medical applications. Wireless communication via a Surface Acoustic Wave Identi cation-mark (SAW ID-tag) is used to control, drive and locate the microvalve inside the human body. The energy required for these functions is provided by RF pulses, which are transmitted to the valve and back...

To recognize three-dimensional objects bounded by smooth curved surfaces from monocular image contours , viewpoint-dependent image features must be related to object geometry. Contour bitangents and in-ections along with associated parallel tangents points are the projection of surface points that lie on the oc-cluding contour for a ve-parameter family of scaled orthographic projection viewpoin...

This chapter offers a critical philosophical examination of recent work on pleasant (or affective) touch. After developing a distinction between two notions of perceptual affect, I argue that “emotional” and “affi liative” touch are best understood as causing affective reactions, and that affective touch is best understood as perceptually presenting us with affective qualities. In other words, ...

Repeated administration of apomorphine leads to a context-dependent pecking response sens iti zation . Previously sens itized pigeons (Co /llmba /ivia) challenged with saline in the same context show a conditioned response (CR) . The authors studied the effects of intra striatal inj ections of the dopamine (D, ) antagonist SCH-23390 on both the sensiti zed response and the C R. When coadministc...

Most theories of language processing and acquisition make the assumption that perception and comprehension are related to production, but few have anything say about how. This paper describes a performance-oriented connectionist model of the acquisition of morphology in which production builds on representations which develop during the learning of word recognition. Using arti cial language sti...

Coxeter groups are familiar objects in many branches of mathematics. The connections with semisimple Lie theory have been a major motivation for the study of Coxeter groups. (Crystallographic) Coxeter groups are involved in Kac-Moody Lie algebras, which generalize the entire theory of semisimple Lie algebras. Coxeter groups of nite order are known to be nite re ection groups, which appear in in...

The day before yesterday, June 20, we tried again. The IMPs and TIPs loaded and seemed to fly quite well, so we left the new systems up. But by yesterday, June 21, afternoon, with crashes happening in TIPs at the rate of about one per hour, we backed off again and put the old systems back up. (One TIP crash per hour in the network means there is about one crash every eight or ten hours debuggin...

Equations are established for the deformation of a viscoelastic porous solid containing a viscous fluid under the most general assumptions of anisotropy. The particular cases of transverse and complete isotropy are discussed. General solutions are also developed for the equations in the isotropic case. As an example the problem of the settlement of a loaded column is treated. The second-order e...