Jun Hyuk Yang

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  • A Hauptmann, R V Baron, M.-Y Chen, M Christel, P Duygulu, C Huang +11 others
  • 2003
We submitted a number of semantic classifiers, most of which were merely trained on keyframes. We also experimented with runs of classifiers were trained exclusively on text data and relative time within the video, while a few were trained using all available multiple modalities. This year, we submitted two runs using different versions of the Informedia(More)
In recent years, the multimedia retrieval community is gradually shifting its emphasis from analyzing one media source at a time to exploring the opportunities of combining diverse knowledge sources from correlated media types and context. In order to combine multimedia knowledge sources, two basic issues must be addressed: what to combine and how to(More)
  • A G Hauptmann, M.-Y Chen, M Christel, D Das, W.-H Lin, R Yan +3 others
  • 2007
In this notebook paper we describe the technical details of the submissions to TRECVID 2006 from CMU Informedia team. We participated in the high-level feature extraction and the search (automatic and interactive) tasks. Our emphasis is on various techniques used for the search task, where our interactive runs won the first place in the interactive track(More)
Surveillance video recording is becoming ubiquitous in daily life for public areas such as supermarkets, banks, and airports. The rate at which surveillance video is being generated has accelerated demand for machine understanding to enable better content-based search capabilities. Analyzing human activity is one of the key tasks to understand and search(More)
Kinetic analysis and isotopic tracer studies were used to identify elementary steps and their reversibility in the oxidative dehydro-genation of propane on VO x /ZrO 2 catalysts with VO x surface densities between 1.6 and 6 VO x /nm 2. Competitive reactions of C 3 H 6 and CH 3 13 CH 2 CH 3 showed that CO forms via secondary combustion of propene(More)
The structure of vanadia species supported on zirconia depends on VO x surface density and on the temperature of catalyst oxidation pretreatments. X-ray diffraction and Raman and UV-visible spectroscopies show that supported VO x species form polyvanadate domains of increasing size and ultimately monolayers and clusters as vanadium surface density(More)
The replacement of oxide semiconducting TiO 2 nano particles with one dimensional TiO 2 nanotubes (TNTs) has been used for improving the electron transport in the dye-sensitized solar cells (DSSCs). Although use of one dimensional structure provides the enhanced photoelectrical performance, it tends to reduce the adsorption of dye on the TiO 2 surface due(More)
TiO2 nanotube arrays are very attractive for dye-sensitized solar cells (DSSCs) owing to their superior charge percolation and slower charge recombination. Highly ordered, vertically aligned TiO2 nanotube arrays have been fabricated by a three-step anodization process. Although the use of a one-dimensional structure provides an enhanced photoelectrical(More)
BACKGROUND AND OBJECTIVES Commonly used local anesthetics (eg, lidocaine) are nonselective in blocking sodium channel subtypes, potentially resulting in adverse events, such as prolonged muscle paralysis and unstable hemodynamics. Subtype-selective sodium channel block might avoid these unwanted adverse effects while preserving desirable anesthetic effects.(More)