자원봉사활동의 지속성에 영향을 미치는 요인 탐색

차유미(Yu Mi Cha),이용남(Yong Nam Lee) 전남대학교 교육문제연구소 2013 교육연구 Vol.36 No.-

Mobile IPv6 환경에서 동적 분기 라우터를 이용한 효율적인 자원 예약 방법

차우석,김은미,배호영,이배호,조기환,Cha, Woo-Suk,Kim, Eun-Mi,Bae, Ho-Young,Lee, Bae-Ho,Cho, Gi-Hwan 한국정보처리학회 2007 정보처리학회논문지 C : 정보통신,정보보안 Vol.14 No.3

RSVP(Resource reSerVation Protocol)는 송신노드와 수신노드 사이에 네트워크 자원을 예약하여 QoS(Quality of Service) 요구사항을 지원하는 인터넷 표준 프로토콜이다. 무선 이동환경에 RSVP를 적용하기 위해 공유경로 식별 문제와 자원 선-예약 문제가 해결되어야 한다. 본 논문은 후보 라우터와 분기 라우터를 이용하여 공유경로 식별 문제와 자원 선-예약 문제를 해결하는 DBRA(Dynamic Branch Router Approach) 기법을 제안한다. DBRA는 송신노드와 분기 라우터 사이에는 일대일의 RSVP 자원예약 관계를 갖으며, 분기 라우터와 후보 라우터들 사이에는 일대다의 RSVP 자원예약 관계를 갖도록 하여 많은 네트워크 자원 소모를 줄인다. 제안하는 DBRA 기법의 효율성을 분석하기 위해서 시뮬레이션을 이용하여 평균 패킷 전송율과 대역폭 이용률, RSVP 자원 예약 실패율 관점에서 RSVP와 MRSVP(Mobile RSVP), HMRSVP (Hierarchical MRSVP)를 비교대상으로 비교 분석하였다. RSVP (Resource reSerVation Protocol) is the Internet standard protocol for supporting QoS (Quality of Service) requirements by reserving network resources between the sender and the receiver. Several problems, such as common path identification and resource pre-reservation, should be solved to apply RSVP in wireless mobile environments. To resolve these problems, this paper proposes DBRA (Dynamic Branch Router Approach) based on two designated entities, candidate access routers and a branch router. While several RSVP sessions between a branch router and candidate routers are managed, DBRA makes use of only one RSVP session between the sender and a branch router. Based on a network simulation, the proposed scheme has been compared with MRSVP (Mobile RSVP) and HMRSVP (Hierarchical MRSVP) in terms of the average packet transmission rate, bandwidth utilization and RSVP session failure rate.

통합 서비스 패킷 망을 위한 BDLR 라우팅 알고리즘

차미리(Cha Mi Lee),이광일(Lee Kwang Il),박남훈(Park Nam Hoon),김상하(Kim Sang Ha) 한국정보처리학회 1997 정보처리학회논문지 Vol.4 No.5

This paper proposes a new routing algorithm, the Bandwidth-Delay-Loss based Routing(BDLR) algorithm, which supports the selection of an efficient routing path by considering the characteristics and QoS requirements of integrated services over the Integrated Services Packet Network(ISPN), and also compares it with other routing algorithms by simulating their performances on the various combinations of the realtime and non-realtime traffic over the ISPN. The simulation shows that the BDLR algorithm takes great advantages on transmission delay, the satisfiability of QoS requirements, and the adaptation of traffic environment over the other routing algorithms proposed for ISPN until now.

델파이 기법을 이용한 대표적인 한국의 맛과 음식에 관한 연구

차성미,정라나,정서진,김광옥,한귀정,이새롬,Cha, Sung-Mi,Chung, La-Na,Chung, Seo-Jin,Kim, Kwang-Ok,Han, Gwi-Jung,Lee, Sae-Rom 한국식품조리과학회 2010 한국식품조리과학회지 Vol.30 No.2

The present study attempted to conceptualize Korean typical tastes, flavors and foods and to gather professionals' opinions about the globalization of Korean foods. A total of 23 experts participated in a three round survey using the Delphi technique, which was used to integrate and share the professional ideas of each expert. The survey was categorized into two parts: 1. Korean typical tastes and flavors, 2. Korean typical foods. According to the results, 'hot chili pepper', 'Kimchi', 'soy sauce', and 'garlic' were represented as Korean typical tastes and flavors. Also 'harmonized' was determined to be a type of food that should be introduced to foreigners and, 'sweet' and 'tart' were shown to also be liked by foreigners. In addition, 'neobiani', 'kalbi', 'bibimbap', 'kimchi', 'japchae', and 'neobiani' were categorized as typical Korean foods, foods that should be introduced to foreigners, and foods that would be liked by foreigners. These results showed that appropriate foods should be globalized and R&D should be expanded to determine the preferences of foreigners in terms of tastes and flavors.

방사선취급 병원근무자들의 염색체이상 및 자매염색분체교환 빈도

차애리,김미선,황인경,이수일,조병만,김돈균,Cha, Ae-Ri,Kim, Mi-Sun,Hwang, In-Kyung,Lee, Su-Ill,Cho, Byung-Mann,Kim, Don-Kyoun 대한예방의학회 1998 예방의학회지 Vol.31 No.4

In order to evaluate the cytogenetic hazard among hospital workers potentially exposed to low dose of radiation, the analysis of chromosome aberrations(CA) and sister chromatid exchanges(SCE) in lymphocytes were performed in 79 hospital workers and 79 non-exposed workers. The mean frequency of chromosomal exchange and deletion(respectively, $0.20\times10^{-2}/cell\;and\;0.39\times10^{-2}/cell$) in the exposed group were significantly higher than those$(0.07\times10^{-2}/cell\;and\;0.23\times10^{-2}/cell)$ in control group. The frequency of sister chromatid exchanges was 5.04/cell in the control vs. 6.57/cell in the exposed group. There were also significant differences in the mean frequencies of CA and SCE adjusted for age, sex, smoking, drinking between two groups. There were no evidence of significant increase of CA and SCE according to the department or duration of employment. But the frequency of cells having chromosome aberration was significantly higher in the exposed group than in the control group related to duration of employment. There was no dose-effect relationship between the cumulative doses and the frequency of CA and SCE. But in the case of last 1 yr cumulative dose, there were evidence of significant dose-dependant increase of chromosome type CA and percentage of cells with aberration. The result suggest that there is cytogenetic hazard in risk group like hospital workers handling low dose radiation. And the analysis CA and SCE are useful biological indicators for the exposure of low dose level of radiation.

건축물을 모티브로 한 펌 디자인 연구

차우정 ( Woo-jeong Cha ),이옥현 ( Ok-huyn Lee ),진용미 ( Yong-mi Jin ) 한국미용예술경영학회 2011 미용예술경영연구 Vol.5 No.1

The natural human desire on Increase of awareness of beauty and improvement of quality of life is urging to develop design related fields. All things that human beings have created are related to a design and these designs are divided into various fields. Among them, hair design is the field to meet the needs regarding human personality and beauty and they have to be studied in many angles because a new hair style emerges every moment. There was leading research to bring a new hair design with the motive of natural organic and geometric forms in terms of Hair Design, but there was no leading research studied by perm design with the appearance of buildings. Thus, four works were produced with the characteristics of the exterior of buildings in this study and plan of these creative works is meaningful because it makes the study possible regarding perm pattern even with various kinds of materials and motifs when studying perm design related. The work made these results changes of thickness of the wave according to the change of Lot size in the same perm pattern and the change of location of volume according to change of perm pattern in the same Lot size and wave direction according to the winding direction. 1 want various perm patterns to be studied to fit the customer’s face shape practically. However, limitations of this study was that change of perm design could not be identified according to various cut types because work was made with only one cut form and 1 want perm design research should be performed according to various cut styles as a subsequent research.

국내 체류 외국인 및 내국인의 전통향토음식에 대한 기호도 비교 분석

차성미 ( Sung Mi Cha ),정라나 ( La Na Chung ),정서진 ( Seo Jin Chung ),김광옥 ( Kwang Ok Kim ),이새롬 ( Sae Rom Lee ),김행란 ( Haeng Ran Kim ),한귀정 ( Gwi Jung Han ),이진영 ( Jin Young Lee ) 한국식생활문화학회 2012 韓國食生活文化學會誌 Vol.27 No.3

This study was conducted to compare the preference and satisfaction for Korean traditional foods (Jeonju Bibimbap, Daetongbap, Jeonbokjuk, Jorangiddockguk, Hobakbumbuk, Darkgalbee, Eonyang Bulgogi, Moyackgwa, Insam Jeonggwa, Maejackgwa) in foreigners and Koreans. In this study, 27 foreign and 31 Korean university students were surveyed. Statistical analysis and Mann-Whitney U test were performed using the SPSS statistical package (17.0). The major findings were as follows: 1) Foreigners had higher experience of eating Darkgalbee (84.6%), Jeonju Bibimbap (80.8%), Daetongbap (53.8%), and Jeonbokjuk (53.8%) among Korean traditional foods, whereas their eating experience of Insam Jeonggwa (3.8%), Maejackgwa (11.5%), Moyackgwa (15.4%) and Jorangiddockguk (23.1%) was lower. 2) Foreigners and Koreans both liked sweet taste, but disliked sour taste, bitter taste, garlic flavor, sesame flavor, and soy sauce flavor among the sensory characteristics of Korean traditional foods. 3) Foreigners scored their overall satisfaction of Korean traditional foods in the order of Jeonju Bibimbap (7.70±0.95), Eonyang Bulgogi (7.62±2.10), Daetongbap (7.59±1.60), Darkgalbee (7.20±1.56), and Jeonbokjuk (6.67±1.64), whereas Koreans rated higher scores for Eonyang Bulgogi (8.28±1.19), Darkgalbee (8.20±1.00), Jeonju Bibimbap (7.73±1.08), Jeonbokjuk (7.69±1.44), and Moyackgwa (7.43±1.52).

한식당 지역별 김치 이용 실태에 관한 연구

차성미(Sung-Mi Cha),이새롬(Sae-Rom Lee),한귀정(Gwi-Jung Han) 한국지역사회생활과학회 2010 한국지역사회생활과학회 학술대회 자료집 Vol.2010 No.4

미용사의 여가활동 인지 유형에 따른 근무형태와 여가실태

차우정 ( Woo-jeong Cha ),오별 ( Byul Oh ),이옥현 ( Ok-huyn Lee ),진용미 ( Yong-mi Jin ) 한국미용예술경영학회 2012 미용예술경영연구 Vol.6 No.4

This study aims to present more efficient ways of leisure activities of hairdressers, to find out the type of work and leisure status according to the cognitive type of leisure activities of hairdressers. The survey was carried out for 235 questionnaires from hairdressers working in Seoul Province and analyzed using the SPSS 16.0 statistical program. Results are as follows: First, as the search result of demographic characteristics of research subjects, the most of them are unmarried women in their twenties with average monthly income of less than 1 million won (about $1,000) and academic background in or of junior college. Second, as the search result of research subjects' type of work, they were employees who work for hair salons more than a medium-sized with more than 6 staffs, working for 10 to 12 hours, the average day off holidays in a month were four the most. Third, as the search result of research subjects' level of cognitive of leisure activities, three factors have been identified for mentally stable, self-development and knowledge expansion. Fourth, as the search result of research subjects' cognitive type of leisure activities, they were classified into three groups: indifferents, self-development and emotional stability. Fifth, as the search result of research subjects' difference of type of work with the cognitive type of leisure activities, the results showed a significant difference in the average monthly income. Sixth, as the search result of research subjects' difference of leisure status with the cognitive type of leisure activities. According to the results of study, the cognitive type of leisure activities are as follows: First, induce the participation of indifferents to the leisure education program. Second, let the group of self-development have a chance to get some physical and mental rest with leisure. Third, let the group of emotional stability have a chance to utilize the opportunity of acquiring knowledge and education to promote the development of their own with leisure. Through this way, wishing all hairdressers enjoy a rewarding and efficient leisure for their better quality of life.

Bl6 Melanoma세포에서 Protein Kinase억제제들이 Cyclic AMP 경로를 통한 멜라닌 생성에 미치는 영향

차상복(Sang Bok Cha),조남영(Nam Young Cho),윤미연(Mi Yun Yoon),임혜원(Hye Won Lim),김경원(Kyoung Won Kim),박영미(Young Mi Park),이지윤(Ji Yun Lee),이진희(Jin Hee Lee),김창종(Chang Jong Kim),심상수(Sang Soo Sim) 대한약학회 2003 약학회지 Vol.47 No.1

To investigate the effect of protein klnase on melanin production via CAMP-dependent pathway, we measured the melanin amount and tyrosinase activity in Bl6 melanoma cells stimulated by alpha-melanocyte stimulating hormone (MSH), forskolin and 8-Br-Camp MSH, forskolin and 8-Br-Camp significantly increased both melanin production and tyrosinase activity in Bl6 cells. Melanin production and tyrosinase activity by MSH are significantly inhibited by cyclic AMP-dependent protein kinase inhibitor (KT5720) and protein kinase C down-regulation treated with PMA. Bisindolmaleimide (1μM), protein kinase C inhibitor, significantly inhibited melanin production and tyrosinase activity stimulated by MSH, for-skolin and 8-Br-Camp with the following order of potency: MSH>forskolin>8-Br-Camp. Tyrosine kinase inhibitor, genistein and DHC, significantly inhibited both, but the inhibitory effect was more potent in 8-Br-Camp-stimulated Bl6 cells than MSH-stimulated cells. NFkB inhibitor (parthenolide) significantly inhibited melanin production and tyrosinase activity. Neither melanin production nor tyrosinase activity induced by MSH, forskolin and 8-Br-Camp were affected by KN-62 (calm-odulin-dependent protein kinase II inhibitor), PD098059 (mitogen-activated protein kinase inhibitor, MAPKK) and worthmannin (phosphatidylinositol 3-kinase inhibitor). These results suggest that both protein klnase C and tyrosine kinase are involved in melanin production by cyclic AMP-dependent pathway and NFrB pathway may play an important role in cyclic AMP-dependent melanin production in Bl6 melanoma cells.