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A Study on the Establishment of Destination Image through Mass Media
Hwang,Kyu-sung,Baik,Yu-kyung,Moon,Hye-young 세계문화관광학회 2007 Conference Proceedings Vol.8 No.0
As the products of mass media, such as drama, movies, and commercial advertisements have grown and entertained us, they induced people to visit the locations where they were filmed. However, little has been known what effects in movies or television-induced locations on tourism. The purpose of this study is to investigate the effects of the products of mass media on tourism through locations induced by dramas, movies, and commercial advertisements. More specially, this study examined the relationships between the perceptions of movies or television-induced affective response, the perceptions of movies or television-induced attributes and movies or television-induced destination images on tourism. Findings suggest that if audiences enjoy delightful movies, they will feel destination images with fun and delightfulness when they visit the location scene. Also, the results suggest that if dramas and movies gain in public favor, the location where they are filmed will become a new and fantastic destination to people.
Hwang, Kyu-Youn,Kwon, Sung Hong,Jung, Sun-Ok,Lim, Hee-Kyun,Jung, Won-Jong,Park, Chin-Sung,Kim, Joon-Ho,Suh, Kahp-Yang,Huh, Nam Royal Society of Chemistry 2011 Lab on a chip Vol.11 No.21
<P>We have developed a miniaturized bead-beating device to automate nucleic acids extraction from Gram-positive bacteria for molecular diagnostics. The microfluidic device was fabricated by sandwiching a monolithic flexible polydimethylsiloxane (PDMS) membrane between two glass wafers (<I>i.e.</I>, glass–PDMS–glass), which acted as an actuator for bead collision <I>via</I> its pneumatic vibration without additional lysis equipment. The Gram-positive bacteria, <I>S. aureus</I> and methicillin-resistant <I>S. aureus</I>, were captured on surface-modified glass beads from 1 mL of initial sample solution and <I>in situ</I> lyzed by bead-beating operation. Then, 10 μL or 20 μL of bacterial DNA solution was eluted and amplified successfully by real-time PCR. It was found that liquid volume fraction played a crucial role in determining the cell lysis efficiency in a confined chamber by facilitating membrane deflection and bead motion. The miniaturized bead-beating operation disrupted most of <I>S. aureus</I> within 3 min, which turned out to be as efficient as the conventional benchtop vortexing machine or the enzyme-based lysis technique. The effective cell concentration was significantly enhanced with the reduction of initial sample volume by 50 or 100 times. Combination of such analyte enrichment and <I>in situ</I> bead-beating lysis provided an excellent PCR detection sensitivity amounting to <I>ca.</I> 46 CFU even for the Gram-positive bacteria. The proposed bead-beating microdevice is potentially useful as a nucleic acid extraction method toward a PCR-based sample-to-answer system.</P> <P>Graphic Abstract</P><P>We present a miniaturized bead-beating device to automate nucleic acids extraction from Gram-positive bacteria for molecular diagnostics. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c1lc20692c'> </P>
A Low-Noise and Small-Size DC Reference Circuit for High Speed CMOS A/D Converters
Hwang, Sang-Hoon,Song, Min-Kyu The Institute of Electronics and Information Engin 2007 Journal of semiconductor technology and science Vol.7 No.1
In a high-speed flash style or a pipelining style analog-to-digital converter (A/D converter), the DC reference fluctuation caused by external noises becomes serious, as the sampling frequency is increased. To reduce the fluctuations in conventional A/D converters, capacitors have been simply used, but the layout area was large. Instead of capacitors, a low-noise and small-size DC reference circuit based on transmission gate (TG) is proposed in this paper. In order to verify the proposed technique, we designed and manufactured a 6-bit 2GSPS CMOS A/D converter. The A/D converter is designed with a 0.18um 1-poly 6-metal n-well CMOS technology, and it consumes 145mW at 1.8V power supply. It occupies the chip area of 977um by 1040um. The measured result shows that SNDR is 36.25 dB and INL/DNL is within 0.5LSB, even though the DC reference fluctuation is serious.
Sung-Sil Park,진성호,Kyu-Jae Lee,Sung-Ho Jin,Sun Hoo Park,방호윤,Hwang-Jong Yu,Jong-Inn Lee 대한위암학회 2012 Journal of gastric cancer Vol.12 No.3
Purpose: Although serosal invasion is a critical predisposing factor for peritoneal dissemination in advanced gastric cancer, the accuracy of preoperative assessment using routine imaging studies is unsatisfactory. This study was conducted to identify high-risk group for serosal invasion using preoperative factors in patients with advanced gastric cancer. Materials and Methods: We retrospectively analyzed clinicopathological features of 3,529 advanced gastric cancer patients with Borrmann type I/II/III who underwent gastrectomy at Korea Cancer Center Hospital between 1991 and 2005. We stratified patients into low- (≤40%), intermediate- (40~70%), and high-risk (>70%) groups, according to the probability of serosal invasion. Results: Borrmann type, size, longitudinal and circumferential location, and histology of tumors were independent risk factors for serosal invasion. Most tumors of whole stomach location or encircling type had serosal invasion, so they belonged to high-risk group. Patients were subdivided into 12 subgroups in combination of Borrmann type, size, and histology. A subgroup with Borrmann type II, large size (≥7 cm), and undifferentiated histology and 2 subgroups with Borrmann type III, large size, and regardless of histology belonged to high-risk group and corresponded to 25% of eligible patients. Conclusions: This study have documented high-risk group for serosal invasion using preoperative predictors. And risk stratification for serosal invasion through the combination with imaging studies may collaboratively improve the accuracy of preoperative assessment, reduce the number
Hwang, In Koo,Yi, Sun Shin,Yoo, Ki-Yeon,Park, Ok Kyu,Yan, Bingchun,Song, Wook,Won, Moo-Ho,Yoon, Yeo Sung,Seong, Je Kyung Kluwer Academic/Plenum Publishers 2011 Neurochem Res Vol.36 No.8
<P>In the present study, we investigated the effects of treadmill exercise in early and chronic diabetic stages on parvalbumin (PV) immunoreactivity in the subgranular zone of the dentate gyrus of Zucker diabetic fatty (ZDF) and its lean control rats (ZLC). To investigate the effects, ZLC and ZDF rats at 6 or 23?weeks of age were put on a treadmill with or without running for 1?h/day/5 consecutive days at 16-22?m/min for 5?weeks or 12-16?m/min for 7?weeks, respectively. Physical exercise in pre-diabetic rats prevented onset of diabetes, while exercise in rats at chronic diabetic stage significantly reduced blood glucose levels. In addition, physical exercise in the pre-diabetic rats significantly increased PV immunoreactive fibers in the strata oriens and radiatum of the CA1-3 region and in the polymorphic and molecular layers of the dentate gyrus compared to that in sedentary controls. However, in rats at chronic stages, PV immunoreactivity was slightly increased in the CA1-3 region as well as in the dentate gyrus compared to that in the sedentary controls. These results suggest that physical exercise has differential effects on blood glucose levels and PV immunoreactivity according to diabetic stages. Early exercise improves diabetic phenotype and PV immunoreactive fibers in the rat hippocampus.</P>
A Black Metal-dielectric Thin Film for High-contrast Displays
Sang-Hwan Cho,Min-Kyo Seo,강주형,Jin-Kyu Yang,Sung-Yong Kang,KyuHwan Hwang,ByoungDuk Lee,Joon-Gu Lee,Young-Woo Song,JongHyuk Lee,이용희 한국물리학회 2009 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.55 No.2
We demonstrate a thin metal-dielectric structure that delivers low reflection and high absorption over the entire visible spectrum. The thin black film consists of SiO2/Cr/SiO2/Al layers deposited on a glass substrate. The measured reflectance and absorptance of the black film are 0.7% and 99.3%, respectively, when averaged over the range 380 – 780 nm. The total thickness of the black film is only about 220 nm, and it can be used as a thin absorbing layer for displays that require both broadband antireflection and high-contrast characteristics.