Developments over the past several years have led to renewed study of theoretical methods for treating scattering of ultrasound by defects in elastic solids. Characteristically, many theories of scattering, until a few years ago, dealt with scalar waves and simple obstacles. Within that context two distinct regimes were apparent -the long wave length, and the short wave or imaging regime. The t...

Objective. Fetal hemoglobin (HbF) levels in the hemolysates obtained from infants who died from sudden infant death syndrome (SIDS) are reported to be markedly increased compared with controls. This finding could have been explained by increased HbF synthesis caused by episodes of hypoxemia in the SIDS infants. A prospective study in a group of infants being monitored at home after an apparent ...

We have been able to trace 40 cases of classical Friedreich's disease from 14 previously unrelated French Canadian kindreds to one common ancestral couple arriving in New France in 1634: Jean Guyon and Mathurine Robin. One member of this couple presumably introduced one gene for Friedreich's disease into the French Canadian population. This gene has now been traced over 12 generations to both p...

Fifty-one patients with uncomplicated transposition of the great arteries (TGA) and normal pulmonary pressure who were 10 to 20 years old and 69 normal subjects matched for age were studied by M mode echocardiography. Left ventricular internal dimensions and posterior wall thickness showed positive correlation with the body surface area in the TGA as well as in the control groups. Values for th...

P o s i t i v e and n e g a t i v e i ns tances of a concept are assumed to be desc r i bed by a c o n j u n c t i o n o f l i t e r a l s i n the p r e d i c a t e c a l c u l u s , w i t h terms l i m i t e d t o cons tan ts and u n i v e r s a l l y q u a n t i f i e d v a r i a b l e s . A graph r e p r e s e n t a t i o n of a con junc t i o n o f l i t e r a l s , c a l l e d a "p roduc t...

This paper presents and discusses examples of mechanical i n fe rence problems which must be so lved in order to cons t ruc t e f f e c t i v e mechanical speech understanding systems. The examples are taken from incrementa l s imu la t i ons of a p ro to t ype speech understanding system which w i l l use s y n t a c t i c , semant ic , and pragmat ic i n f o r m a t i o n as w e l l as a c o ...

Since an tiquity, man has dreamed of building a de vice that would "learn from examples" 1 "form generalizations", and "discover t he rules" behind patt ern s in t he data. Recent work has shown that a high ly connected , layered networ k of simple an alog processing element s can be astonishingly successful at this, in some cases . In ord er to be precise about what has been observed, we give ...

DuringWorld War I male French citizens in Cochinchina whom the colonial government had drafted to fight in Europe left their families behind in the colony.Through a complicated subsidies process, the government offered financial assistance to families impoverished by the draftee’s departure and the concomitant loss of income. Far from being a monolithic category, the colony’s poor white applica...

Few specific treatments for children with chronic cholestasis are available. Most therapy strategies relieve bile component retention or palliate some of the consequences of chronic cholestasis. Ursodeoxycholic acid is the most frequently used pharmacological agent in children with chronic cholestasis. This bile acid is administered at dosages between 10 and 30 mg/kg/day to patients with cystic...

The generation of neutron optical effects, which a r e sensitive to non-forward spin scattering in dynamical diffraction conditions, i s studied. Cases of spin-orbit and of supposed P and T violating interactions a r e considered. In the study of low-energy neutron spin interactions, the most sensitive experiments a r e based on neutron optical effects. We consider, for example, the Pviolation ...