Tests of verbal intellegence (Concept Mastery Test) and nonverbal intelligence (Raven's Advanced Progressive Matrices) showed nonsignificant zero-order correlations and a nonsignificant multiple correlation with critical flicker frequency (CFF), in 100 university students. Age-partialled correlations were even lower, and corrections for attenuation and restriction of range yielded unimpressive ...

In this study I examine the relationship between syntactic working memory and intermediate gap positions in longdistance filler-gap dependencies. An “intermediate” gap position is a structural position, distinct from verbal argument positions, which is available to the filler at a clause edge between its surface dislocated position and its original canonical position. I will use anterior negati...

Although memory deficits have been clearly documented in patients with human immunodeficiency virus type-1 (HIV-1) infection, the physiological basis of this dysfunction is poorly understood. We focused on Tat, a viral protein released from HIV-1–infected cells and investigated its effect on spatial learning in adult mice. An intracerebroventricular injection of Tat leads to attenuation of spat...

How much information can be transferred over a wireless network and what is the optimal strategy for the operation of such network? This thesis tries to answer some of these questions from an information theoretic approach. A model of wireless network is formulated to capture the main features of the wireless medium as well as topology of the network. The performance metrics are throughput and ...

Estimation of the underwater attenuation of light is important to ecosystem modellers, who require information on Photosynthetically Available Radiation ( PAR ), and on the euphotic depth for calculation of primary production. Characterisation of these processes can be achieved by determining the diffuse attenuation coefficient of PAR , KPAR . A review of bio-optical models of the spectral diff...

Bone mineral density [BMD] generally correlates with bone strength. BMD testing is used to assess bone density and diagnose osteoporosis. The HU scale is a linear transformation of the original linear attenuation coefficient measurement in to one in which the radio-density of distilled water at standard pressure and temperature is defined as Zero Hounsfield Unit while the radio-density of air a...

Computed tomography (CT) using metrizamide is a valuable tool in the neuroradiologic evaluation of the spinal cord, but CT must be used with care when measuring object size because size may vary with different window center (level) settings. A simple method to determine appropriate window center (level) settings during CT object measurement is described. A polystyrene core with a Teflon outer c...