Research on intelligent tutoring systems has not leveraged general models of collaborative discourse, even though tutoring is inherently collaborative. Similarly, research on collaborative discourse theory has rarely addressed tutorial issues, even though teaching and learning are important components of collaboration. We help bridge the gap between these two related research threads by present...

Cerebral Microangiography After Hypocarbia and Hypercarbia • Ischemic infarction was obtained in the basal ganglia and internal capsule of the Rhesus monkey by clipping the middle cerebral artery at its origin through a transorbital approach. The postmortem microvasculature was demonstrated using microtized barium (Micropaque) and soft x-ray technology. The effects on this microvasculature indu...

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This paper studies a dynamic stochastic general equilibrium model with rational inattention. Decisionmakers have limited attention and choose the optimal allocation of their attention. We study the implications of rational inattention for business cycle dynamics. For example, we study how rational inattention affects impulse responses of prices and quantities to monetary policy shocks, aggregat...

Abstract Background Bat-borne viruses are relatively host specific. We hypothesize that this specificity is due to coevolution of the with their hosts. To test hypothesis, we investigated coronavirus and paramyxovirus bat Published nucleotide sequences RNA-dependent RNA polymerase (RdRp) gene 60 strains identified from 37 species, large (L) 36 29 cytochrome B ( cytB ) 35 species were analyzed f...

INTRODUCTION Obesity is associated with 2 closely related respiratory diseases: obesity hypoventilation syndrome (OHS) and obstructive sleep apnea-hypopnea syndrome (OSAHS). It has been shown that noninvasive ventilation during sleep produces clinical and functional improvement in these patients. The long-term survival rate with this treatment, and the difference in clinical progress in OHS pat...

Cerebral autoregulation has been studied by linear filter systems, with arterial blood pressure (ABP) as the input and cerebral blood flow velocity (CBFV-from transcranial Doppler Ultrasound) as the output. The current work extends this by using adaptive filters to investigate the dynamics of time-varying cerebral autoregulation during step-wise changes in arterial PaCO(2). Cerebral autoregulat...

FES (fat embolism syndrome) is a clinical problem, and, although ARDS (acute respiratory distress syndrome) has been considered as a serious complication of FES, the pathogenesis of ARDS associated with FES remains unclear. In the present study, we investigated the clinical manifestations, and biochemical and pathophysiological changes, in subjects associated with FES and ARDS, to elucidate the...