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김화정,이승미,최남경,김선하,송홍지,조용균,박병주,Kim, Hwa-Jung,Lee, Seung-Mi,Choi, Nam-Kyong,Kim, Seon-Ha,Song, Hong-Ji,Cho, Young-Kyun,Park, Byung-Joo 대한예방의학회 2006 예방의학회지 Vol.39 No.2
Objectives : The incidence of colorectal cancer increased greatly among the elderly in Korea, but the relationship between smoking and colon cancer remains controversial. Few studies have targeted Asian elderly people. We analyzed the smoking status, the amount smoked, and the smoking duration as risk factors of colorectal cancer to determine their association and causality. Methods: The cohort members (n=14, 103) consisted of 4,694 males and 9,409 females, and they were derived from the Korea Elderly Phamacepidemilogic Cohort (KEPEC), which was a population-based dynamic cohort. They were aged 65 years or more and they lived in Busan Metropolitan City between from 1993-1998; they were beneficiaries of the Korean Medical Insurance Corporation (KMIC). The baseline information was surveyed by a self-administered mailed questionnaire; after 8.7 person-years of mean follow up period, 100 cases of colorectal cancer occurred. The adjusted relative ratio (aRR) of smoking status, the smoking amount and the smoking duration were calculated from the Cox's proportional hazard model with the never-smokers as a reference group and the Cox model controlled for age, gender, precancerous lesions of CRC, medication history of NSAIDs & antibiotics, the alcohol drinking status and BMI. Results : Compared with the never smokers, the aRRs were 2.03 (95% CI=1.02-4.03) and 1.36 (95% CI=0.80-2.32) for the ex-smokers and current smokers, respectively. Statistical significant trends were not observed for the dose-relationship among the elderly, either for the mean daily amount smoked (p for trend=0.28) or for the total amount (p for trend=0.15). Still, the aRRs were 1.51 (95% CI=0.97-2.34) for the elderly who smoked less than 40 years and 2.35 (95% CI=1.16-4.74) for the elderly who had 40 years or more of smoking (p for trend=0.06). Smokers who started smoking before the age 20 had an increased aRR of 2.15 (95% CI=1.17-3.93) compared to the never smokers. Conclusions : After controlling for age, gender, precancerous lesion of CRC, medication history of NSAIDs & antibiotics, the alcohol drinking status and BMI, smoking increases the risk of colorectal cancer among elderly people. The age when starting smoking is also important.
의무기록의 다각적 활용을 통한 충실도 높은 병원 암등록 체계의 구축: 서울아산병원의 경험
김화정,조진희,유용만,이선혜,황경하,이무송,Kim, Hwa-Jung,Cho, Jin-Hee,Lyu, Yong-Man,Lee, Sun-Hye,Hwang, Kyeong-Ha,Lee, Moo-Song 대한예방의학회 2010 예방의학회지 Vol.43 No.3
Objectives: An accurate estimation of cancer patients is the basis of epidemiological studies and health services. However in Korea, cancer patients visiting out-patient clinics are usually ruled out of such studies and so these studies are suspected of underestimating the cancer patient population. The purpose of this study is to construct a more complete, hospital-based cancer patient registry using multiple sources of medical information. Methods: We constructed a cancer patient detection algorithm using records from various sources that were obtained from both the in-patients and out-patients seen at Asan Medical Center (AMC) for any reason. The medical data from the potentially incident cancer patients was reviewed four months after first being detected by the algorithm to determine whether these patients actually did or did not have cancer. Results: Besides the traditional practice of reviewing the charts of in-patients upon their discharge, five more sources of information were added for this algorithm, i.e., pathology reports, the national severe disease registry, the reason for treatment, prescriptions of chemotherapeutic agents and radiation therapy reports. The constructed algorithm was observed to have a PPV of 87.04%. Compared to the results of traditional practice, 36.8% of registry failures were avoided using the AMC algorithm. Conclusions: To minimize loss in the cancer registry, various data sources should be utilized, and the AMC algorithm can be a successful model for this. Further research will be required in order to apply novel and innovative technology to the electronic medical records system in order to generate new signals from data that has not been previously used.
알루미늄 용탕에서 Al-TiO2-C의 연소합성반응에 의한 in-situ Al/TiC 복합재료의 제조에 미치는 공정변수의 영향
김화정 ( Hwa Jung Kim ),이정무 ( Jung Moo Lee ),조영희 ( Young Hee Cho ),김종진 ( Jong Jin Kim ),김수현 ( Su Hyeon Kim ),이재철 ( Jae Chul Lee ) 대한금속재료학회(구 대한금속학회) 2012 대한금속·재료학회지 Vol.50 No.9
A feasible way to fabricate in-situ Al/TiC composites was investigated. An elemental mixture of Al-TiO2-C pellet was directly added into an Al melt at 800-920℃ to form TiC by self-combustion reaction. The addition of CuO initiates the self-combustion reaction to form TiC in 1-2 ㎛at the melt temperature above 850℃. Besides the CuO addition, a diluent element of excess Al plays a significant role in the TiC formation by forming a precursor phase, Al3Ti. Processing parameters such as CuO content, the amount of excess Al and the melt temperature, have affected the combustion reaction and formation of TiC, and their influences on the microstructures of in-situ Al/TiC composites are examined.
한국에서(가칭) 긴꼬리도둑갈매기(Stercorarius longicaudus)와 검은슴새(Bulweria bulwerii)의 첫 기록
김화정(Hwa-Jung Kim),강창완(Chang-Wan Kang),강희만(Hee-Man Kang),지남준(Nam-Joon Ji),김은미(Eun-Mi Kim),김진한(Jin-Han Kim) 한국조류학회II 2011 한국조류학회지 Vol.18 No.1
2010년 6월 13일에 제주특별자치도 서귀포시 대정읍 마라도 인근 해상에서 긴꼬리도둑갈매기(Stercorarius longicaudus) 1개체와 2010년 7월 28일에 제주특별자치도 제주시 조천읍 함덕리에서 검은슴새(Bulweria bulwerii) 1개체가 확인되었다. 두 종 모두 한국에서의 첫 기록이다. A Long-tailed Skua (Stercorarius longicaudus) was observed in the sea near Marado Island, south of Jeju-do on 13 June 2010 and a Bulwer’s Petrel (Bulweria bulwerii) was found at Hamdeok-ri, Jocheon-eup, Jeju-do on 28 July 2010. Two species are the first record in Korea.
자동차 자동변속기 기어용 합금강의 열간 단조 성형에 따른 기계적 특성 변화에 관한 연구
김화정(Hwa-Jeong Kim),김용조(Yohng-Jo Kim),김현수(Hyun-Soo Kim) 한국기계가공학회 2016 한국기계가공학회지 Vol.15 No.3
This study investigated the effect of the changes in metal characteristics due to the hot forging on SCR420HB applied to ensure the optimal production of the hot-forging ratio on the mechanical properties of an automotive automatic transmission gear. The microstructural changes in the forging ratio were investigated by adjusting the forging range into multiple ranges from alloy steel. This was done in order to set the optimum forging range given the manufacturing process conditions during the hot forging of alloy steel parts with a carbon content of more than 0.8% wt. The effects of the content change in the microstructure on the mechanical properties due to the use of the part were examined.
김현동 ( Hyundong Kim ),강재훈 ( Jae Hoon Kang ),임주연 ( Ju Yeon Lim ),김소은 ( So Eun Kim ),정우성 ( Woo Sung Jung ),김화정 ( Hwa Jung Kim ),김형후 ( Hyung Hu Kim ),김진 ( Jin-kim ) 한국정보처리학회 2023 한국정보처리학회 학술대회논문집 Vol.30 No.2
본 연구의 목적은 최근 증가하고 있는 고령 인구를 위해 여러 가지 요인을 고려하여 노인만을 대상으로 하는 여가 만족도를 산출하는 것이다. 노인의 여가 만족도에 영향을 주는 요인으로 ‘여가시설’, ‘노인인구’, ‘노인 건강’, ‘노인 소득’을 산정하였다. 해당 요인들에 가중치를 분배하여 산정하기 위한 방법으로 PCA와 선형회귀를 사용하였다. 위 과정을 통해 제작된 노인 여가 만족도 지표에 인자값을 투입하여 자치구별로 노인 여가 만족도 점수를 산출하였고, 스코어 카드를 통해 현황을 살펴보았다. 본 연구는 산출된 각 자치구별 여가 만족도 점수와 인자에 해당하는 점수를 파악하여, 여가만족도가 낮은 지역들의 취약 분야를 파악하고 취약 분야를 중점으로 여가 만족도를 개선해나갈 것을 제안한다.
통합학급 교사의 자질과 역할 기대에 대한 특수교사와 일반교사의 인식 비교
김화정 ( Hwa Jung Kim ),장종수 ( Jong Soo Jang ),최용재 ( Yong Jae Choi ) 한국초등특수교육학회 2012 초등특수교육연구 Vol.14 No.1
본 연구는 특수교사와 일반교사의 통합학급 교사 자질과 역할 기대에 대한 인식을 알아보고, 특수교사와 일반교사가 인식하는 통합학급 교사의 자질과 역할 기대는 어떤 관계가 있는지를 구체적으로 알아보기 위한 것이다. 이를 위해 시 도의 특수학급이 설치되어 있는 유 초 중 고등학교에 설문지를 배부 회수하여 조사해서 결론은 다음과 같다. 첫째, 특수교사와 일반교사는 통합학급 교사가 갖추어야 할 자질요인에 대해 일반 교사 중 교직경력이 11년 이상인 교사가 인성적 특성을 가장 높게 인식하고 있으며 대학원 졸업인 특수교사의 자질영역 중요도 인식 수준이 대학졸업 및 일반교사들 보다 높다. 자질요인의 4개 하위 영역에 대한 특수교사와 일반교사의 인식에서는 특수교육에 관한 지식과 교양 및 교직에 대한 태도에서 일반교사가 특수교사보다 높다. 둘째, 특수교사와 일반교사의 성별, 학교급, 교직경력, 통합교육 직무연수 경험에 따른 통합학급 교사의 역할 기대 수준은 비슷하지만 대학원 졸업인 특수교사가 특수교사의 경우 물리 사회적 환경 조성과 통합교육 기술, 교수 내용 및 방법, 평가 방법의 수정에 대한 기대 수준이 높다. 셋째, 특수교사와 일반교사가 인식하고 있는 통합학급 교사가 갖추어야 할 자질 하위요소(인성적 특성, 특수교육에 관한 지식, 통합교육에 관한 지식 및 특성, 교양 및 교직에 대한 태도)들은 역할기대의 하위 영역(물리 사회적 환경조성, 통합교육 기술, 교수내용 및 방법, 평가방법의 수정, 교사간 협력)들과 많은 영역에서 의미 있는 영향을 끼친다. This study aims to comprehend the perception of the special education teachers and general education teachers about the quality and role expectations which the inclusive classroom teacher should prepare in order to support the role as a member of the society where the disabled should live together with non-disabled and in order to prepare the qualitative life for the disabled through the various supports depending on the special educational needs of the disabled children, and the study also aims to contribute to improve the special education ultimately by developing their performing role in the education system of the schools for the realization of the responsible and efficient inclusive education realization. The results of this study are as follows. First, about the special education teachers and the general education teachers, the teachers with more than 11 years of teaching experience perceived highest personality traits about the quality factors which the inclusive classroom teacher should prepare among the regular teachers, and the importance perception level of quality domain of the special education teachers graduated from graduate school was higher than the teachers graduated from the University and the general education teachers. Second, the inclusive classroom teacher`s role expectations level by the gender, school level, teaching experience, inclusive education job training experience of the special education teachers and the general education teachers were similar but in the case of the special education teachers graduated from graduate school, the expectations level about the physical and social environmental composition, inclusive education skill, teaching information and method, revision of evaluation methods was high. Third, the quality sub- elements(personality traits, knowledge about special education, knowledge about inclusive education and attributes, attitude to refinement & teaching profession) which the inclusive classroom teacher should prepare perceived by the special education teachers and the general education teachers had significant effects on the sub-domain(physical and social environmental composition, inclusive education skill, teaching information and method, revision of evaluation methods, cooperation between the teachers) of the role expectation and many domains.