Daniele Piazza

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A study of brainstem auditory evoked potentials (BAEPs) and pattern reversal visual evoked potentials (VEPs), recorded in intercritical phase, was carried out in 20 subjects (10 suffering from common migraine and 10 suffering from vertebrobasilar TIA) in order to obtain a comparative evaluation of cortical-subcortical functions. The data we obtained(More)
In this paper, we quantify the performance enhancements that can be provided by reconfigurable antennas in an ad hoc network where all nodes employ multiple input multiple output communication techniques. We present two types of reconfigurable antennas: a reconfigurable printed dipole array (RPDA), and a reconfigurable circular patch antenna (RCPA). The(More)
A descriptive study was conducted to determine if a relationship among the variables of hope, self-esteem and social support existed in persons with multiple sclerosis. A demographic data sheet and three instruments were used: Miller Hope Scale (MHS), Rosenberg Self-Esteem Scale and Part II of the Personal Resource Questionnaire (PRQ). Of 75 individuals(More)
A descriptive study was conducted to determine if a relationship among the variables of hope, social support and self-esteem existed in persons with spinal cord injuries. A demographic data sheet and three instruments were used: Miller Hope Scale (MHS), Personal Resource Questionnaire Part II (PRQ) and Rosenberg Self-Esteem Scale (RSES). Of the 83(More)
This paper presents a reconfigurable two-port circular patch antenna that improves the performance of a MIMO wireless communications system through pattern diversity. Different modes of the circular patch antenna can be excited by varying its radius with PIN diode switches. Based on this antenna architecture a practical algorithm that exploits the wireless(More)
This paper uses near field and far-field computational electromagnetic analysis to demonstrate a novel reconfigurable multi-port circular patch antenna that uses pattern diversity to improve the performance of a MIMO system. Different modes of the circular patch antenna can be excited by varying its radius. A 2x2 MIMO system employing such reconfigurable(More)