S. J. Chang

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Changes in electrical as well as surface composition such as chemical and electronic properties of Mg-doped p-type GaN by phosphorus implanting are systematically investigated using Hall effect and X-ray photoelectron spectroscopy (XPS) measurements. It is shown that p-type conductivity of Mg-doped GaN can be improved by implanting P atoms after a proper(More)
the size of the ambiguity sets given a time limit for the observation. Using these metrics, DTOOL provides three kinds of analyses. In evaluation mode, the diagnos-ability c haracteristics of a design with a predeened sensor allocation are calculated. In advice mode, an arbitrary set of requirements can be deened for the diagnosability characteristics, and(More)
A flat depressed early colon cancer (FDEC) is characterized by non-polypoid growth pattern, no association of adenomatous tissues and a tendency of even small lesions toward submucosal invasion and lymph node metastasis. It supports de novo carcinogenesis of colorectal cancer, although most colorectal cancers arise in pre-existing adenoma (adenoma-carcinoma(More)
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