Abstracts of Presentations at the 2006 Spring Meeting of the Korean Society of Mycology at the Seoul National University, Seoul, Korea, May 12

Abstract

Jae-Beom Lee et al. 535With video compression standards such as MPEG-4, a transmission error happens in a video-packet basis, rather than in a macroblock basis. In this context, we propose a semantic error prioritization method that determines the size of a video packet based on the importance of its contents. A video packet length is made to be short for an important area such as a facial area in order to reduce the possibility of error accumulation. To facilitate the semantic error prioritization, an efficient hardware algorithm for face tracking is proposed. The increase of hardware complexity is minimal because a motion estimation engine is efficiently re-used for face tracking. Experimental results demonstrate that the facial area is well protected with the proposed scheme.

Matchmaker, Matchmaker, Make Me a Match: Migration of Populations via Marriages in the Past

“…19 in Appendix I). One possible explanation of the ubiquity of ergodic Korean names is the historical fact that many families from the lower social classes adopted (or even purchased) names of noble clans from the upper classes near the end of the Joseon dynasty (19th-20th centuries) [20, 60]. At the time, Korean society was very unstable, and this process might have, in essence, introduced a preferential growth of ergodic names.…”

“…This observation is necessarily speculative because the age of a clan is not easy to determine. The first entry in a jokbo (see Table I for our ten jokbo ) could have resulted from the invention of characters or printing devices rather than from the true birth of a clan [20].…”

“…Determining the centroid locations of clans from modern census data is more accurate than attempting to determine the locations where clans originated [49] for two reasons. First, for many clans, origin-place names have differed from geographical clan centers from the beginning of recorded Korean history—which, in particular, predates the period that spans our jokbo data sets [20, 50]. Second, the origin-place names for many clans have become outdated and cannot be located accurately via the names of modern administrative regions.…”

“…When two Koreans marry, the bride’s clan and her birth year are customarily recorded in the jokbo owned by the groom’s family. These jokbo are kept in the groom’s family and passed down through the generations; they serve primarily as a record of the names and birth years of all male descendants [19, 20]. In previous work, researchers used the marriage data contained in these books to estimate the population sizes and distributions of clans in Korea as far as 750 years in the past [21–23].…”

Chemopreventive effects of elm tree bark extract onHelicobacter pylori‐associated mouse gastric carcinogenesis

“…The bark of the stem and root of this plant have long been used in oriental medicine to treat inflammation, edema, and mastitis in oriental medicine for a long time. 25 Although elm tree has various medical effects, there are only a few studies on its biological activity. Plant glycoproteins have biologically active functions, including an anti-oxidative effect and enhancement of immune function.…”