Acrylonitrile 의 광중합 속도 (Ⅰ)

최경선,이동호,설수덕 ( Kyung sun Choi,Dong Hoo Lee,Soo Duk Seul ) 한국공업화학회 1997 응용화학 Vol.1 No.1

The water-solution photo-polymerization of acrylonitrile in inorganic salt such as NaSCN, KSCN, NH₄SCN, Ba(SCN)₂, ZnCl₂ which is being used as solvent for acrylic fiber production was studied. Under irradiation of high-pressure mercury lamp(365nm), acrylonitrile was polymerized to higher conversion and molecular weight without the addition of any additional initiator(sensitizer). Overall activation energy was 1.33 ㎉/㏖.

고정성 교정장치 장착환자의 치주질환관련 지식 및 구강건강관련 행태

최경선,문상은,김윤정,김선영,조혜은,강현주,Choi, Kyung-Sun,Moon, Sang-Eun,Kim, Yun-Jeong,Kim, Seon-Yeong,Cho, Hye-Eun,Kang, Hyun-Joo 한국치위생학회 2017 한국치위생학회지 Vol.17 No.5

Objectives: The purpose of study is to investigate periodontal disease-related recognition and oral health-related behavior in orthodontic patients with fixed appliance. Methods: A self-reported questionnaire was completed by 286 orthodontic patients with fixed appliance in Gwangju, Jeonnam from September 1 to September 27, 2016. The questionnaire consisted of general characteristics (3 items), orthodontic related characteristics (3 items), knowledge of periodontal disease (3 items), and oral health-related behavior (4 items). The data were analyzed by frequency analysis, percentage and chi-square analysis using SPSS 21.0 program. Results: 62.8% had experiences of dental treatment and 67.5% had intention of involvement on incremental care program in orthodontic treatment periods. Accuracy rate of cause about periodontal disease was high in female and case of acquiring information experiences on periodontal disease (p<0.05). 67.2% performed correct toothbrushing for the management of periodontal disease in the experiences of acquiring information on periodontal disease in orthodontic treatment periods (p<0.05). The proportions of using interdental toothbrush and mouth rinsing solutions were high among those over 20 years old and students in the subjects (p<0.05). Conclusions:The accuracy rate were high in the answers about cause and management of periodontal disease in case of acquiring information experiences on periodontal disease in orthodontic treatment periods. Therefore, there is a need to further development and implementation of dental hygiene intervention program for periodontal disease care with fixed orthodontic appliances in that regard.

6세기 「봉평리비」의 奴人村과 村使人

최경선(Choi, Kyung-Sun) 한국고대사학회 2019 韓國古代史硏究 Vol.0 No.93

「봉평리비」(524)의 노인에 대한 신라의 지배방식을 파악하기 위해 먼저 「봉평리비」에 보이는 여러 촌 중 노인촌과 일반 촌을 분별해 보았다. 처벌대상자의 범위와 別敎令의 내용 등을 고려하였을 때, 남미지촌만이 노인촌이었다고 판단된다. 즉, 524년 시점에 동해안 지역에는 도사가 파견된 중심촌 예하의 일부 촌이 노인촌으로 존재하였다고 볼 수 있다. 失火로 인한 사태로 주된 책임이 있는 남미지촌에는 별교령으로 처분이 내려지고, 아대혜촌과 갈시조촌의 사인이 남미지촌사인과 함께 처벌을 받았다. 이로 보아 당시 남미지촌 주민은 노인으로서 일반 촌의 주민과 함께 ‘[尓]耶界城’에 동원되어 있었음을 짐작할 수 있다. 또 일반 촌이든 노인촌이든 주민을 동원하는 데 있어서 ‘使人’이 주된 역할을 하였음이 주목된다. 그런데 촌사인을 매개로 노인촌을 지배하는 방식은 노인촌이 촌으로 편제된 이후에야 가능했을 것이다. 520년 율령 반포 때에 노인의 처지는 그대로 유지되었지만, 노인집단을 촌으로 편제하고 촌사인을 둠으로써 ‘도사-중심촌의 유력자-촌사인’으로 이어지는 행정체계 속에 편입시켰을 가능성을 고려해 볼 수 있다. 다만 노인은 ‘賤人’을 의미하지 않더라도 최소한 특정 주체와 상하관계를 맺고 예속된 처지를 뜻한다고 생각된다. 따라서 노인촌의 주민은 일반 촌의 주민과는 차별되었을 것이다. 국역의 내용이나 성격의 차이를 고려해 볼 수 있다. 이러한 측면에서 신라의 노인은 일반 민과 천인 사이의 존재로 판단할 수 있을 것이다. This article attempts to understand Silla’s ruling system over the Noin(奴人) written on Bongpyeongnibi(鳳坪里碑), which was erected in 524. As a groundwork, this article first distinguished Noinchon(奴人村) and general Chon(村) from various Chons shown in Bongpyeongnibi. Considering the list of punishment and Beolgyoryeong(別敎令, the additional decree), only Nammijichon(男弥只村) can be judged as Noinchon. In 524, some of Chons under the command of central Chon where Dosa(道使) was dispatched, existed as Noinchon in the East Sea region. Nammijichon, which was primarily responsible for the situation caused by fire, was given Beolgyoryeong, and Sa-in(使人) of Adaehyechon(阿大兮村) and Galsijochon(葛尸條村) were punished with Nammijichonsa-in(男弥只村使人). Based on this, it can be figured out that Nammijichon residents at that time were mobilized to “Iyagyeseong([尓]耶界城)” as a Noin with the residents of general Chon. It is also noteworthy that the “Sa-in” played a major role in mobilizing residents, whether they are from general Chon or Noinchon. The Chonsa-in(村使人)s of Bongpyeongnibi were a local people who did not have Waewi(外位, provincial rank), or had a low one. Therefore, they were supposed to carry out the orders of Dosa sent to the central Chon as an administrative practitioner. However, the way of ruling the Noinchon through the Chonsa-in would have been possible only after the Noin group became Chon. Noin’s position remained in 520 when the Yullyeong was promulgated(前時王大敎法), but there would have been a significant change. At this time, it is possible to consider the possibility of incorporating the Noin group into the administrative system that leads from Dosa to influential person of central village and Chonsa-in by organizing the group into Chon and having a Chonsa-in. Even if the Noin does not mean “Cheonin(賤人)”, at least it seems to mean that they established hierarchical relationship with a specific subject and were subordinated to them. Therefore, the residents of the Noinchon would be differentiated from those of the general Chon. In this sense, the Noin of Silla can be judged as being between common people and Cheonin.

6세기 신라의 軍主와 광역 州의 관계

최경선(Choi, Kyung-sun) 충북대학교 중원문화연구소 2018 중원문화연구 Vol.26 No.-

치과 병·의원 내 치과위생사 간 의사소통에 대한 질적 연구

최경선 ( Kyung-sun Choi ),문상은 ( Sang-eun Moon ),김윤정 ( Yun-jeong Kim ),김선영 ( Seon-yeong Kim ),조혜은 ( Hye-eun Cho ),강현주 ( Hyun-joo Kang ) 한국치위생학회 2021 한국치위생학회지 Vol.21 No.5

Objectives: This study aimed to offer basic resources needed to solve conflicts and problems of communication among dental hygienists working in dental clinics by comprehending and analyzing their in-depth communication experiences. Methods: Individual depth interviews were conducted with 10 dental hygienists who had over one year of clinical experience and worked in dental clinics in Gwangju, from September 16 to October 15, 2020. Colaizzi’s phenomenological analysis was performed. Results: The results of the interviews were grouped into four central categories: lack of communication due to differences in position, relationships they want to avoid, return to joint work, beginning of new communication. The participants of this study experienced difficulties in communicating with dental hygienists in the clinical field, but they overcame the conflicts by trying to understand others by putting themselves in others’ shoes. Conclusions: This study is expected to contribute to providing good quality medical services to patients by promoting effective communication among dental hygienists.

6세기 신라 軍主의 군단과 그 역할

최경선(Choi, Kyung-sun) 충북대학교 중원문화연구소 2019 중원문화연구 Vol.27 No.-

「영원사수철화상비」의 판독과 찬자(撰者)·서자(書者)에 대한 검토

최경선(Choi, Kyung-sun) 한국역사연구회 2016 역사와 현실 Vol.- No.101

「Yeong’weon-sa Suchel Hwasang-bi」 is a stone monument erected at the Yeong’weon-sa monastery in order to honor a Buddhist priest named Sucheol who was the 2nd ancestral figure of the Shilsang Sanmun sect during the ending days of Shilla. It documents his life and his Zen Buddhist philosophy, but the monument is not in a good shape and it is hard to read the letters on it. Making matters worse, it is believed that while being renovated during the Joseon period the order of the original contents were disrupted. In this article, however, it is assumed that the current status is displaying the original order. Estimation of how many letters are missing from the lower section is attempted. Thanks to a field trip investigation, several letters’ identity was newly determined, and a different approach to reconstructing his own life is now possible. Also, the governmental titles of the figures who either drafted or written the contents of this monument are analyzed upon the aforementioned assumption that the contents’ original order is intact. The author is determined to have been an official who was dispatched to Dang to congratulate Dang emperor Sojong’s arrival in the Eastern Capital(Nakyang), between Lunar April of 904 and October 905, when the monument was erected. It is also possible that the figure who authored similar biographies for other monuments could have authored the one for Sucheol too, but it is hard to ascertain. The person who ‘wrote(transcribed)’ the contents is determined to have been a military general and also held an eunuch status(This seems as a Shilla official title). It seems like a method to solidify the king’s own leadership by strengthening the practical power of the eunuch, or bringing titular prestige to him. Because Silla government was in a state of disorder, that would have had a limited effect.

ZigBee-PSTN 기반의 독거노인 활동량 및 생체신호 모니터링 시스템 개발

최경선(Kyung-Sun Choi),전중창(Joong-Chang Chun) 한국정보전자통신기술학회 2016 한국정보전자통신기술학회논문지 Vol.9 No.1

최근에 이르러 평균수명의 증가로 인한 독거 노인층이 점점 증가하고 있으며, 독거노인은 외부의 침입이나 갑작스런 건강상의 문제로 위험에 처해질 가능성이 매우 높다. 따라서 독거노인의 의료 복지에 대한 관심이 날로 증가하고 있다. 본 연구에서는 인터넷 기반시설이 취약한 환경에서도 독거노인의 의료 복지에 용이하게 적용할 수 있는 활동량 및 생체신호 모니터링 시스템을 개발하였다. 이 시스템은 저 전력으로 동작하는 ZigBee 무선센서 네트워크와 PSTN(Public Switched Telephone Network) 전화망의 결합 시스템으로 구성되었으며, 일상생활 속에서 무구속적인 U-헬스케어 개념으로 활동량과 혈압 등의 생존 정보를 병원 및 보호자에게 전송할 수 있다. 또한 본 연구 결과는 미래의 독거노인 원격진료 시스템으로 확장하여 적용 될 수 있다. Recently the number of the elderly who live alone are increasing more and more as the average life span is prolonged. The elderly are probably in danger at home without being helped due to external aggressions or sudden health problems. Accordingly, more and more interests are taken in medical welfare for the healthy life of the seniors. In this paper, we have developed a mobility and vitality signal monitoring system based on ZigBee-PSTN gateway for the elderly. This combination of ZigBee wireless sensor network and PSTN can be easily established even in the poor internet infrastructure as is usually common for the elderly, with the advantage of providing non-constrained monitoring feature. The research result can be extended to the future tele-medicine system.

데이터분석기반 전기화재 예측시스템이 탑재된 단말장치 설계 연구

최경선(Kyung-Sun Choi),김영찬(Yeong-Chan Kim) 한국조명·전기설비학회 2023 한국조명·전기설비학회 학술대회논문집 Vol.2023 No.5

신라의 (성,촌)城,村 설치와 주군제(州郡制)의 시행 -하마다 고사쿠(浜田耕策) 「新羅の城,村設置と州郡制の施行」『조선학보(朝鮮學報)』 84, 1977-

최경선 ( Kyung-sun Choi ),( Kosaku Hamada ) 경희대학교 인문학연구원 2016 인문학연구 Vol.0 No.30

신라의 州郡制가 6세기 중엽에 이르러 분명히 시행되었다는 사실은 두세 개의 비문사료로 알 수 있다. 그런데 이에 이르는 과정과 州郡制 하의 지방사회의 구조에 대해서는 논한 바가 적다. 본고는 『三國史記』의 축성기사를 검토하여 축성사업의 시대적 역할을 우선 고찰하였다. 다음으로 6세기의 두세 개 비문을 통하여 지방사회의 구조를 추정하였다. 특히 변경지역은 산성과 촌으로 구성되어 있었다. 土壘나 石壘로 둘러싸인 산성과 성내의 촌, 그리고 산성 아래 촌이 이에 부속한 구조를 이루고 있었던 것이다. 이 산성과 촌의 보완관계 위에 성립된 기구로서 주군제가 시행되었다.본 논문은 국가에 의해서 지방사회의 구조와 질서가 처음 이루어진 측면을 중시하였다. 이 때문에 재지세력이나 기존의 사회구조에서 국가제도를 논하는 관점과는 다른 신라의 사회상을 제시한 것 같다. Ju-Gun System(州郡制) of the Silla was enforced in the middle of the 6th century. This can actually be known by two or three inscriptions. This research reviewed the records about founding mountain fortresses in Samguksagi(三國史記), and inferred structure of the local communities from two or three inscriptions. In particular, frontier zone was consisted of mountain fortresses and villages(城·村). Ju-Gun System(州郡制), organization based on complementary relations between mountain fortresses and villages(城 ·村) was implemented by state power.