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Uses and Gratification on eWOM Tourism Information
Yang,Sung-Soo,Huh,Hyang-Jin,Suh,Yong-Kun 세계문화관광학회 2009 Conference Proceedings Vol.10 No.0
This study draw on the uses and gratifications perspective in tourism information research to examine the tourist experience associated with website. The goal of this study is to investigate the extent to eWOM(electronic Word-of-Mouth) using motivation and gratification. In methodological sense, the survey was employed in user of destination search for travel and performed application with AVOVA for analysis. Data collecting method was a convenience sampling with face-to-face interview. A total of 600 questionnaires were collected from the survey and 577 questionnaires were coded for a data for analysis on this study. Data for the study were drawn from the user who have been travel information on eWOM. The findings deriving from this study are followings; First, Perception of using motivation is consist of 5 dimensions such as Self-Development, Information Acquisition, Enjoyment, Community, and Travel Cost. Second, The findings deriving from this study is a statistically significant difference in the relationship between the using dimensions and user propensity of eWOM tourism information. Finally, using motivation was positively related with behavioral intentions of making process.
( Sul Lee ),( Hyung Joon Yoon ),( Eun Hye Jeon ),( Juseok Yang ),( Yong Jung Song ),( Hyun Jin Roh ),( Sang Hun Lee ),( Byung Su Kwon ),( Ki Hyung Kim ),( Dong Soo Suh ) 대한산부인과학회 2019 대한산부인과학회 학술대회 Vol.105 No.-
Objective: The aim of this study is to evaluate oncologic outcomes of total abdominal radical hysterectomy (TARH), total laparoscopic radical hysterectomy (TLRH) and laparoscopic-assisted radical vaginal hysterectomy (LARVH) in early cervical cancer patients (stage IB2-3, tumor size≥2cm), analyzing the risk factors that may affect the clinical results. Methods: A total of 756 patients underwent radical hysterectomy between 2000 and 2019 from three university hospitals (Pusan National University Hospital, Yang-san Pusan National University Hospital, Ulsan University Hospital) were enrolled. Among them, 172 patients with stage IB2-3 were analyzed retrospectively. Results: Seventy-seven patients were treated with TARH, and 95 were managed via minimally invasive surgery (MIS), consisting of 35 with TLRH and 60 with LARVH. TARH group had better disease five-year disease free survival (DFS) and overall survival (OS) compared with MIS group (86.4% vs. 73.4 for DFS and 91.7 vs. 82.2 for OS), but not statistically significant in both (p=0.058 for DFS and p=0.119 for OS). When TARH and the LARVH group were compared, both five-year DFS and OS were not significant different (86.4 vs 82.2%; p=0.288 for DFS and 91.7 vs 84.4%; p=0.206 for OS). However, when TARH and the TLRH group were compared, TLRH group had significantly worse five-year DFS than TARH (86.4 vs 54.5%; p=0.008), but five-year OS was not significant different (91.7 vs 77.5%; p=0.127). Multivariate analysis showed that LN metastasis and TLRH surgical approaches were an independent prognostic factor for DFS in IB2-3 cervical cancers. Conclusion: Our findings provided the evidence that TLRH surgical approach was associated with worse DFS in IB2-3 cervical cancers but that of LARVH was not. Such results may have important implications of colpotomy method for MIS in cervical cancer.
Directed self-assembly of cylinder-forming diblock copolymers on sparse chemical patterns
Yang, Yong-Biao,Choi, Young Joo,Kim, Sang Ouk,Kim, Jaeup U. The Royal Society of Chemistry 2015 SOFT MATTER Vol.11 No.22
<P>Using both theory and experiment, we investigate the possibility of creating perfectly ordered block copolymer nanostructures on sparsely patterned substrates. Our study focuses on scrutinizing the appropriate pattern conditions to avoid undesired morphologies or defects when depositing cylinder-forming AB diblock copolymer thin films on the substrates which are mostly neutral with periodic stripe regions preferring the minority domain. By systematically exploring the parameter space using self-consistent field theory (SCFT), the optimal conditions for target phases are determined, and the effects of the chemical pattern period and the block copolymer film thickness on the target phase stability are also studied. Furthermore, as a sample experimental system, almost perfectly aligned polystyrene-<I>block</I>-poly(methyl methacrylate) (PS-<I>b</I>-PMMA) diblock copolymers are demonstrated. After the pattern transfer process, highly ordered Al nanodot arrays following the initial vertically aligned cylinder pattern are created. This systematic study demonstrates the ability to control the structure and the position of nanopatterns on sparse chemical patterns.</P> <P>Graphic Abstract</P><P>Pattern multiplication and directed self-assembly of block copolymer films deposited on sparsely patterned substrates. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c5sm00474h'> </P>
Changes in Ginsenoside Composition of White Ginseng by Fermentation
Sung Kwon Ko,Ok Sun Cho,Hye Min Bae,Byung Wook Yang,Byung-Ok Im,Young Tae Hahm,Kyung Nam Kim,Soon Hyun Cho,Jae Young Kim,Sung Hyun Chung,Boo Yong Lee 한국식품과학회 2009 Food Science and Biotechnology Vol.18 No.1
The purpose of the study was to develop a new process to manufacture ginseng extract containing saponin aglycon of high concentration. The process to transform saponin glycosides to saponin aglycon was analyzed by high performance liquid chromatography (HPLC). GCK-1 (open cultured mixture for 1 day at 42℃) had the highest content of protopanaxadiol (0.662%). However, other mixtures (GCK-2, 3, 4, 5, and 6) had less than 0.152% in the content of protopanaxadiol. In case of fermentation by inoculation of Bacillus natto, BNG-5 (B. natto inoculated mixture for 5 days at 42℃) showed the highest content of protopanaxadiol (0.364%). Other mixtures (BNG-1, 2, 3, 4, and 6) also showed the high content of more than 0.2% in protopanaxadiol. B. natto inoculation or open culture fermentation with soybean transformed ginseng saponin glycosides into saponin aglycon.
Predictive factors of acute kidney injury in patients undergoing rectal surgery
( Sung Yoon Lim ),( Joon Yong Lee ),( Ji Hyun Yang ),( Young Joo Na ),( Myung Gyu Kim ),( Sang Kyung Jo ),( Won Yong Cho ) 대한신장학회 2016 Kidney Research and Clinical Practice Vol.35 No.3
Background: Despite major advance in surgical techniques from open surgery to robot-assisted surgery, acute kidney injury (AKI) is still major postoperative complication in rectal surgery. The purpose of this study is to compare the incidence of postoperative AKI according to different surgical techniques and also the risk factors, outcomes of AKI in patients undergoing rectal cancer surgery. Methods: A retrospective medical chart review was done in a total of 288 patients who received proctectomy because of rectal cancer from 2011 to 2013. Results: The mean patient age was 62 ± 12 years, and male was 64.2%. Preoperative creatinine was 0.91 ± 0.18 mg/dL. Open surgery was performed in 9%, and laparoscopy assisted surgery or robot assisted surgery were performed in 54.8% or 36.1% of patients, respectively. AKI developed in 11 patients (3.82%), 2 (18%) of them received acute hemodialysis. Incidence of AKI was not different according to the surgical technique, however, the presence of diabetes, intraoperative shock, and postoperative ileus was associated with the development of AKI. In addition, AKI patients showed significantly longer hospital stay and higher mortality than non- AKI patients. Conclusion: Our study demonstrated that despite advances in surgical techniques, incidence of postoperative AKI remains unchanged and also that postoperative AKI is associated with poor outcome. We also found that presence of diabetes, intraoperative shock and postoperative ileus are strongly associated with the development of AKI. More careful attention should be paid on high risk patients for the development of postoperative AKI regardless of surgical techniques.
Ginsenoside Composition Changes in Ginseng Extracts by Different Ascorbic Acid Treatments
Sung Kwon Ko,Ok Sun Cho,Hye Min Bae,Uy Dong Sohn,Byung Ok Im,Soon Hyun Cho,Byung Wook Yang,Sung Hyun Chung,Wang Soo Shin,Boo Yong Lee 한국식품과학회 2008 Food Science and Biotechnology Vol.17 No.4
The purpose of this study was to develop a new preparation process for chemical transformation of ginseng saponin glycosides to prosapogenins. Ginseng and ginseng extracts were processed under several treatment conditions using ascorbic acid solution. Treating with ascorbic acid at pH 2-3 and above 80℃ increased the ginsenoside Rg<sub>3</sub> content of samples to over 3% as compared to other pH levels and temperatures. In addition, ginseng and ginseng extracts that were processed under a high ascorbic acid solution treatment condition (pH 2.0, 5 hr) contained more ginsenoside Rg3 (approximately 16 times) than those processed under a low ascorbic acid solution treatment condition (pH 3.0, 5 hr). The highest quantity of ginsenoside Rg<sub>3</sub> (3.434%) occurred when a sample of fine ginseng root extract (AG2-9) was processed with the ascorbic acid solution at pH 2.0 for 9 hr. However, there was no change in the amount of ginsenoside Rg<sub>3</sub> when fine ginseng root extracts were processed with ascorbic acid solution at pH 2.0 for over 9 hr. In conclusion, the results indicated that ascorbic acid treatment of ginseng extracts can produce a level of ginsenoside Rg<sub>3<sub> that is over 90-fold the amount found in commercial red ginseng.
Yang, Hyun Kyoung,Park, Sung Jun,Park, Jin Young,Je, Jae-Yong WISSENSCHAFTLICHE VERLAGSGESELLSCHAFT MBH 2017 Optik Vol. No.
<P><B>Abstract</B></P> <P>Gd<SUB>0.99-x</SUB>VO<SUB>4</SUB>:Tm<SUP>3+</SUP> <SUB>0.01</SUB>/Yb<SUP>3+</SUP> <SUB>x</SUB> phosphors with different Yb<SUP>3+</SUP> concentration (0.01–0.07mol) and sintering temperatures (450–600°C) were synthesized by the planetary ball milling method. The structural properties were analyzed using the X-ray diffraction patterns, which conform the poly phase with Na<SUB>3</SUB>Gd(VO<SUB>4</SUB>)<SUB>2</SUB> and GdVO<SUB>4</SUB>. Upconversion luminescence was investigated under the 975nm laser diode. The upconversion spectra of Gd<SUB>0.99-x</SUB>VO<SUB>4</SUB>:Tm<SUP>3+</SUP> <SUB>0.01</SUB>/Yb<SUP>3+</SUP> <SUB>x</SUB> show two emission peak in <SUP>1</SUP>G<SUB>4</SUB> → <SUP>3</SUP>H<SUB>6</SUB> (477nm, blue) and <SUP>3</SUP>H<SUB>4</SUB> → <SUP>3</SUP>H<SUB>6</SUB> (802nm, NIR) of the Tm<SUP>3+</SUP> transitions, together with the <SUP>2</SUP>F<SUB>5/2</SUB> → <SUP>2</SUP>F<SUB>7/2</SUB> transition of Yb<SUP>3+</SUP>. Gd<SUB>0.92</SUB>VO<SUB>4</SUB>:Tm<SUP>3+</SUP> <SUB>0.01</SUB>/Yb<SUP>3+</SUP> <SUB>0.07</SUB> phosphor sintered at 600°C is expected to find potential applications such as blue LED by the near infra-red (NIR) excitation.</P>