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        • KCI등재

          대학도서관의 근로운영방식에 따른 근로학생 구전(口傳)마케팅 효과의 실증적 연구

          최윤희,김기영,Choi, Yoonhee,Kim, Giyeong 한국문헌정보학회 2014 한국문헌정보학회지 Vol.48 No.3

          본 연구는 대학도서관 근로경험에 따른 도서관 마케팅효과에 대한 연구(최윤희 2012)의 후속 연구로서, 대학도서관의 근로학생 운영 특성을 조직구조와 조직커뮤니케이션의 특성으로 구분하였을 때, 각 집단에 속한 근로경험자의 충성도 차이를 확인하였다. 또한 근로학생의 행동적 충성도로 나타나는 구전마케팅 효과를 파악하기 위해 근로경험자 지인의 충성도를 통계적으로 분석하였다. 이를 토대로, 대학도서관의 근로학생 운영이 대학 내 학생집단 전체를 대상으로 한 마케팅 활동으로서 가지는 의의를 논의하였다. As a follow-up of the study on the marketing effect of undergraduates' work experience in university libraries(Choi 2012), this study aims to identify differences in the library loyalty of student employees by the managerial characteristics of student employees and analyzes the loyalty of the acquaintances of the student employees to identify the word-of-mouth marketing effect by behavioral loyalty of student employees. Based on the results from the analyses, we discuss the possibility of the management of student employees as a marketing activities in university libraries to the whole undergraduate student.

        • Abundances of HCN and HNC in the Red MSX Sources

          최윤희,이정은,김기태,Choi, Yun-Hee,Lee, Jeong-Eun,Kim, Kee-Tae 한국천문학회 2010 天文學會報 Vol.35 No.1

          We have studied the abundance ratio of HNC and HCN toward the Red MSX Sources (RMS) using HCN (J=1-0), HNC (J=1-0), $H^{13}CN$ (J=1-0), $HN^{13}C$ (J=1-0),and $N_2H^+$ (J=1-0) lines observed with the Mopra 22 m radio telescope. The RMS are massive young stellar objects identified by the MSX satellite data combined with the 2MASS data. HCN and HNC (a geometrical isomer of HCN) are among the most basic interstellar molecules. According to our analysis, the column density of HCN is found to be correlated with that of HNC. Additionally, the [HNC]/[HCN] abundance ratio is sensitive to the core temperature because HNC is depleted in high temperature regions. This result is consistent with the previous results seen in low mass starless or protostellar cores.

        • KCI등재

          이중대역(PCS/IMT-2000) 마이크로스트립 패치 안테나 설계 및 구조에 따른 SAR 분석

          최윤희,신호섭,김남,박주덕,Choi, Yun-Hi,Shim, Ho-Sub,Kim, Nam,Park, Ju-Derk 한국전자파학회 2004 한국전자파학회논문지 Vol.15 No.1

          본 논문에서는 PCS/IMT-2000 이동통신 전화기에 의해 인체 두부에 유기되는 SAR의 1 g 및 10 g 평균 첨두 값을 비교 분석하였다. 평면형 구조인 single-semi-disc MPA와 double-semi-disc MPA를 설계하고, 안테나 설계 파라미터에 따른 공진 특성을 분석하였다. 그 결과 중심주파수 2.0 ㎓에서 대역폭이 15.5 %, 31 %로 나타났다. 그리고 제안한 안테나와 동일한 공진 주파수를 갖는 모노폴 안테나를 설계하여 SAR 값을 비교ㆍ분석하였다. 폴더형 전화기에 부착된 double-semi-disc MPA에 의한 1 g 및 10 g 평균 첨두 SAR 값은 각각 0.811 W/kg과 0.507 W/kg으로 모노폴 안테나의 1.206 W/kg과 0.755 W/kg에 비해 약32.7 % 가량 낮은 것으로 나타났다. 평면형 구조의 안테나는 등방성 방사패턴을 나타내는 모노폴 안테나에 비해 인체 외부 방향으로 지향성 방사 패턴을 나타내어 인체 두부에 유기되는 SAR이 낮은 값으로 나타났다. In this paper, the detection of 1 g and 10 g averaged SAR on human head caused by PCS/IMT-2000 handhold phones is analyzed and discussed. Planar structured Single-Semi-disc MPA and double-Semi-disc MPA is designed and resonance characteristics with variety of design parameters are analyzed. As a result, 2.0 ㎓ center frequency, at the bandwidth of single-semi-disc MPA and double-semi-disc MPA are 15.5 % and 31 %, respectively. And monopole antenna with W4 length is designed and compared with double-semi-disc MPA in SARs. The SARs caused by double-semi-disc MPA on folder type handset are 0.811 W/kg and 0.507 W/kg and are about 32.7 % lower than monopole-1.206 W/kg and 0.7552 W/kg. While the radiation pattern of the monopole antenna is symmetrical, that of planar structured antenna is asymmetrical and SAR caused by double-semi-disc MPA is less than SAR by the monopole antenna.

        • KCI등재

          안와섬유모세포의 지방세포 분화에 대한 혼합 갱글리오사이드의 영향

          최윤희,조은형,국경훈,Youn-Hee Choi,Eun Hyung Cho,Koung Hoon Kook 대한안과학회 2011 대한안과학회지 Vol.52 No.3

          '스콜라' 이용 시 소속기관이 구독 중이 아닌 경우, 오후 4시부터 익일 오전 7시까지 원문보기가 가능합니다.

          Purpose: To investigate the role of gangliosides in the differentiation of orbital fibroblasts into adipocytes, a component in the pathogenesis of Graves’ ophthalmopathy. Methods: Orbital tissues were obtained during orbital surgery for subjects without Graves’ ophthalmopathy or other inflammatory orbital disease, and orbital fibroblasts were primarily cultured from each obtained tissue. Morphological examination of orbital fibroblasts was performed after treatment with commercially available gangliosides mixture (Gmix) comprised of several subtypes. To determine the effect of Gmix on the differentiation of orbital fibroblasts into adipocytes and the differentiation-related genes, Oil Red-O staining and RT-PCR were performed. Results: The treatment with Gmix induced the morphological changes, which at least in part were explained with the differentiation of orbital fibroblasts into adipocytes in accordance with the increase of mRNA level of genes known to be related to adipogenesis, whereas dermal fibroblasts and preadipocytes were irresponsive to the same treatment. Conclusions: The results from the present study suggest gangliosides may have a role in pathologic mechanisms of Graves’ ophthalmopathy by the induction of differentiation of orbital fibroblasts into adipocytes. J Korean Ophthalmol Soc 2011;52(3):338-344

        • 소양인, 소음인 월경통 환자의 체표온도 비교

          최윤희,조정훈,장준복,이경섭,Choi, Yun-Hui,Cho, Jung-Hoon,Jang, Jun-Bock,Lee, Kyung-Sub 대한한방체열의학회 2006 대한한방체열의학회지 Vol.5 No.1

          Dysmenorrhea is one of the most common gynecologic disorders in menstruating women. Dysmenorrhea refers to the pain appearing in the lower abdomen and lower back before. after or during menstruation. In oriental medicine. the causes of dysmenorrhea have been recognized as something penetrated such as qi. blood. and pathologic factors. The purpose of this study was to observe the difference in the temperature between the Soyangin dysmenorrhea patients group and the Soeumin dysmenorrhea patients group by thermography. We observed the 55 dysmenorrhea patients that visited ** Oriental Medicine center from July 19 to August 27. 2004. We diagnosed the constitution by QSCCII and the body temperature was assessed by DITI. Thermographic measurements were performed on 3 areas(Chon-jung(CV17), Chung-wan (CV12), Kwan-won(CV4)). In this study we observed that the temperature of Chon-jung(CV17) is the highest and Chung-wan (CV12) is higher than Kwan-won(CV4). The temperature of Soeumin group is higher than that of Soyangin group in all areas and there is a significant difference in 3 area temperature between Soeumin group and Soyangin group.

        • Purification and Characterization of a Cationic Isoperoxidase from Korean-Radish Root

          최윤희,박종훈,김승수,Choi, Yun-Hi,Park, Jong-Hoon,Kim, Soung-Soo 생화학분자생물학회 1989 한국생화학회지 Vol.22 No.1

          한국산 무우로부터 cationic isoperoxidase $C_3$를 80% $(NH_4)_2SO_4$ 침전, CM-cellulose chromatography, Sephadex G-100 gel filtration 방법 등을 이용하여 전기이동상에서 하나의 띠로 정제하였다. 정제된 효소는 glycoprotein 이었으며 분자량은 SDS-PAGE와 Sephadex G-150 gel filtration에 의하여 약 44,000으로 나타났다. 정제된 isoperoxidase $C_3$는 guaiacol을 기질로 사용한 경우에 최적 pH가 6.0이었으며, guaiacol과 $H_2O_2$에 대한 Km값은 각각 5.6 mM와 0.77 mM이었다. 여러가지 phenolic compound들에 대한 기질 선호도를 조사한 결과 isoperoxidase $C_3$는 scopoletin, esculetin 그리고 ferulic acid에 대해 높은 Km값을 가지며 anionic isoperoxidase $A_2$와 비교해 볼 때 scopoletin과 ferulic acid에 대하여 기질 친화도가 크게 달랐다. A cationic isoperoxidase, designated $C_3$, was isolated from Korean-radish (Raphanus savatis L.) root. Purification of the enzyme was accomplished by CM-cellulose chromatography and Sephadex G-100 gel filtration. The enzyme was a glycoprotein and its molecular weight was approximately 44,000 as determined by SDS-PAGE and Sephadex G-150 gel filtration. The optimal pH of the purified enzyme was 6.0 for guaiacol and 5.0 for $H_2O_2$. The Km values for guaiacol and $H_2O_2$ were 5.6 mM and 0.77 mM, respectively. The Km values against several naturally occurring phenolic compounds were also determined. In comparison with the anionic isoperoxidase $A_2$ which was previously purified from the same source, $C_3$ had very high Km values for scopoletin and ferulic acid.

        • 영어 뉴스와 자연발화에 나타나는 고성조 피치액센트의 차이점

          최윤희,이주경,Choi, Yun-Hui,Lee, Joo-Kyeong 한국음성학회 2005 음성과학 Vol.12 No.2

          This paper argues that news speech entails a distinct intonational pattern from natural speech, effectively reflecting that it primarily focuses on providing new information. We conducted a phonetic experiment to compare the tonal contours between news speech and natural speech, examining the distributions of pitch accents and the overall pitch ranges. We utilized 70 American Press (AP) radio news utterances and 70 natural utterances extracted from TV dramas. Results show that news speech involves 3.38 H*'s (including L+H* and !H*) within an intonational phrase (IP) or intermediate phrase (ip) whereas natural speech, 1.8 in average. The number of IP/ip's per sentence is 3 in news speech, which is shown in the highest rate of 32.07% of the news speech, but it is merely 1, taking up the highest 41.42% in natural speech. Next, declination tends to be prevented in news speech, and the pitch range is much greater in news speech than in natural speech. Finally, a secondary stress syllable is comparatively frequently given a pitch accent in news speech, explicitly distinct from natural speech. These results can be interpreted as stating that news has the particular purpose of providing new information; every content word tends to be given a H* or its related pitch accent like L+H* or !H* because news speech assumes that every word conveys new information. This definitely brings about more IP/ip's per sentence due to a human physiological constraint; that is, more H*'s will cause more respiratory breaks. Also, greater pitch ranges and pitch accents imposed on secondary stress may be attributed to exaggerating new information.

        • KCI등재

          만성 본드 흡입 환자에게 발생한 호흡부전 1례

          최윤희,이동훈,어은경,Choi, Yoon-Hee,Lee, Dong-Hoon,Eo, Eun-Kyung 대한임상독성학회 2005 대한임상독성학회지 Vol.3 No.1

          Toluene is an aromatic hydrocarbon found in glues, cements, and solvents. It is known to be toxic to the nervous system, hematopoietic system, and causes acid-base and electrolyte disorders. Acute respiratory failure with hypokalemia and rhabdomyolysis with acute renal failure should be considered as potential events in protracted glue sniffing. We reported the case of 26-year-old woman was admitted to the emergency department with the development of respiratory failure and altered mentality due to hypokalemia after chronic glue sniffing. She was weaned from the ventilator 3 days later after potassium and sodium bicarbonate replacement and was discharged without respiratory symptoms and other complications.

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