Alan I. Chao

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It has been demonstrated that pituitary adenylate cyclase activating polypeptide (PACAP) promotes the survival of neurons in culture and can inhibit neuronal cell death after experimental injury. Furthermore, peripheral axotomy results in increased PACAP gene expression in sensory and sympathetic neurons, suggesting that PACAP might be a mediator in the(More)
Pituitary adenylate cyclase-activating polypeptide (PACAP) has been found to modulate neuroendocrine functions in the frog brain and pituitary, but the nucleotide sequence and brain distribution of messenger RNA (mRNA) for the selective type I receptor for PACAP (PAC1) in the frog are still unknown. Here, we report the isolation and characterization of a(More)
We present a fully automatic method for the alignment SAR images, which is capable of precise and robust alignment. A multiresolution SAR image matching metric is first used to automatically determine tie-points, which are then used to perform coarse-to-fine resolution image alignment. A formalism is developed for the automatic determination of tie-point(More)
The AFRL-sponsored Adaptive Sensor Fusion (ASF) program produced a software framework, the eXtensible Distributed Architecture (XDA), which facilitates the construction of scalable, flexible distributed systems. XDA is based on a simple ontology mechanism that enables the definition and maintenance of high-level object models to capture the shared semantics(More)
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