we report the case of a three-year-old girl who complained from dysphagia and post-prandial vomiting since she was 6months old. several diagnostic work-ups were performed for her problem. upper gi endoscopy was normal but barium swallow revealed an external pressure effect over upper part of the esophagus (figure 1) and the ct angiography of thoracic aorta showed that this external pressure eff...

Current optical remote sensing instrument technology allows the acquisition and digitization of all of the reflected energy (light) across the full spectral range of interest. The current method for acquiring, transmitting, and processing this data is still based on the "multi-band" approach that has been used for the past thirty years. This approach was required due to limitations imposed by e...

We present, to the best of our knowledge, the first demonstration of coherent solid-state light detection and ranging (LIDAR) using optical phased arrays in a silicon photonics platform. An integrated transmitting and receiving frequency-modulated continuous-wave circuit was initially developed and tested to confirm on-chip ranging. Simultaneous distance and velocity measurements were performed...

In this paper we consider the problem of transmitting packets over a point to point wireless link where the objective is to minimize the average transmitted power subject to a constraint on the average packet delay and drop rate. We propose an online algorithm based on a novel post-decision state based framework and two timescale stochastic approximation technique. We argue that the algorithm i...

First and foremost, seeking knowledge is a surefire way to feel less ignorant ? so kudos to you for asking for more information. Your concerns are understandable, especially when you're unsure about risks to your children. The good news is that casual contact (which includes activities such as swimming in the same pool or using the same bathroom [2]) is not a recognized method of transmitting H...

This paper summarizes the gains expected for vector entomology from the acquisition of the genome sequence of disease-transmitting arthropods. The results of this kind of high-throughput science, especially the direct consequences that could be summarily described as post-genomic activities, may lead to a better understanding of the biology of the vectors, including population studies, interact...

The fundamental physical limits of optical communications are discussed in the light of the recent developments in quantum information theory. The limits on channel capacities and bit error rates are described. Classical information theory is reviewed, and its relationship with the quantum information theory is examined. Recent developments in quantum information theory have opened new possibil...