일 종합병원 퇴원환자의 가정간호요구조사

최화영,이명하,Choi, Hwa-Young,Lee, Myung-Ha 한국가정간호학회 2002 가정간호학회지 Vol.9 No.2

The purpose of this study is to provide a basic data of home health care nursing centered in the hospital by analyzing home health care needs. Data were collected from June 15. 2000 to June 23. 2000 through questionnaires taken by 208 patients to be discharge in a general hospital. The Home Health Care Need instruments used for collecting data was developed by the researcher. The data obtained were analyzed using frequency. percentage. mean. standard deviation. Chi-square test. t-test. one-way ANOVA. Pearson's correlation coefficients. Cronbach's alpha coefficients and Factor Analysis. The results of the study were as follows: 1. The perception of home health care nursing were 65.4% of subjects had never heard about home health care service and 2.4% of subjects knew about the methods & contents in detail. About the demands of home health care, 58.2% of the subjects were willing to use home health care and 41.8% weren't. 2. Regarding the areas of home health care needs. basic nursing care area was the highest. Education/ counselling, exercise/ hygiene. therapeutic nursing care was orderly. Injection and medication management of basic nursing care area were the highest. 3. In relation to characteristic-related diseases and home health care needs. as for the discharge type, the existence of sores, paralysis showed significant differences with home health care needs in the area of exercise/ hygiene(p<,05). Home health care needs in the area of therapeutic nursing care and exercise/ hygiene showed significant differences with the existence of pain. Home health care needs in the area of therapeutic nursing and basic nursing areas were significantly different in the use of catheter/ assistant instrument(p<.05). Home health care needs in the area of therapeutic nursing. exercise/ hygiene and basic nursing care showed significant difference with diagnosis(p<,05). In conclusion, awareness about home health care nursing were very low, home health care needs in the area of basic nursing was the highest. Home health care needs showed significant difference with discharge type, sores, paralysis, existence of pain, use of catheter/ assistant instrument and diagnosis.

팀 디브리핑 기반 응급시뮬레이션 교육의 효과

최화영 ( Hwa Yeong Choi ),송영숙 ( Yeoungsuk Song ) 한국보건정보통계학회(구 한국보건통계학회) 2020 보건정보통계학회지 Vol.45 No.2

Objectives: This study was conducted to identify the effects of team debriefing-based emergency simulation education for the self-efficacy of group work, team efficacy, and interpersonal understanding. Methods: 120 fourth-year students of the nursing department of C university in A city and a team of five to six nursing professors developed the curriculum as a module. Six scenarios and two theoretical lectures, on emergency simulations, were conducted over 14 weeks and the data collection period was from April 29 to June 14, 2019. Data analysis was conducted using the SPSS 21.0 statistical program. The data analysis was done with descriptive statistics, paired t-test. Results: The self-efficacy of the group differed significantly from 3.78 points before team-based emergency simulation education and 4.0 points (t=4.08, p=0.000) after education; similarly the team efficacy also varied significantly different from 3.85 points before education and 4.01 points (t=2.10, p=0.038) after education, but there was no significant differences in interpersonal understanding before and after the education. Conclusions: Team debriefing-based emergency simulation education has proven to be an effective method of teaching, enhancing the ability of nursing students in terms of justice by improving their self-efficacy and team efficacy.

치과위생사의 방사선안전관리 실천행위분석

최화영(Hwa-Young Choi),박민경(Min-Kyoung Park) 한국구강보건과학회 2017 한국구강보건과학회지 Vol.5 No.2

The purpose of this study was to investigate the relationship between the practice of radiation safety management and the organization of the dental hygienist who conducts the main duties of the radiological examination at the oral medical institution. The average number of respondents working in dental clinics and clinics in Gwangju City who answered yes according to the presence of radiation safety management was 3.38, which was higher than the average of 3.05 who answered no . There was a significant difference between them. In the case of the radiation environment management environment, the average was 2.98, and the facility and equipment environment for radiation safety management was 3.16 on average. Radiation safety management activities showed a statistically significant positive correlation with organization in relation to radiation safety management, the organizational atmosphere, and both the facilities and the equipment environment. Based on the results of these studies, systematic management of radiation safety management should be conducted with interest from the organization directly involved in exposure.

Soluble Production of CMP-Neu5Ac Synthetase by Co-expression of Chaperone Proteins in Escherichia coli

최화영 ( Hwa Young Choi ),이령 ( Ling Li ),조승기 ( Seung Kee Cho ),이원흥 ( Won Heong Lee ),서진호 ( Jin Ho Seo ),한남수 ( Nam Soo Han ) 한국미생물생명공학회(구 한국산업미생물학회) 2014 한국미생물·생명공학회지 Vol.42 No.2

CMP-Neu5Ac synthetase는 sialyated 된 glycoconjugates의 전구체로 사용되는 CMP-Neu5Ac를 합성하는데 관여하는 주요 효소이다. Escherichia coli K1에서 유래한 CMP-Neu5Ac synthetase 유전자 (neuA)는 평소 E. coli BL21(DE3)에서 비수용성으로 생성되는데, 이를 수용성 단백질로 생산하고자 여러 가지 샤페론 단백질 동시 발현기술을 이용하였다. 이를 위해, GroEL-ES와 DnaK-DnaJ-GrpE를 암호화하는 pG-KJE8 plasmid와 neuA를 동시 형질전환 시켰고 0.01 mM IPTG와 0.005 mg/ml의 L-arabinose로 유도하여20oC에서 발현시켰다. 그 결과, E. coli에서의 수용성 CMP-Neu5Ac Synthetase 생산이 현저하게 증가하였다. CMP-Neu5Ac synthetase is a key enzyme for the synthesis of CMP-Neu5Ac, which is an essential precursor of sialylated glycoconjugates. For the soluble expression of the CMP-Neu5Ac synthetase gene (neuA) from Escherichia coli K1, various heat shock proteins were coexpressed in E. coli BL21 (DE3) Star. In order to do this, a pG-KJE8 plasmid encoding genes for GroEL-ES and DnaK-DnaJ-GrpE was co-transformed with neuA and was expressed at 20°C by addition of 0.01 mM IPTG and 0.005 mg/mL L-arabinose. The coexpression of various heat shock proteins resulted in remarkably improved production of soluble CMP-Neu5Ac synthetase in E. coli.

청년 근로자가 지각한 주관적 사회적 지위와 괜찮은 일자리 관계: 일의 의미, 일 자유의지, 진로적응성의 매개효과

최화영(Whayoung Choi),천영민(Youngmin Chun),정연순(Yonsoon Chung) 한국직업교육학회 2024 職業 敎育 硏究 Vol.43 No.1

이 연구는 청년 근로자를 대상으로 일의 심리학 이론(Psychology of Working Theory; PWT)을 적용하여 진행되었다. 청년 근로자가 지각한 주관적 사회적 지위가 괜찮은 일 획득에 유의한 영향을 주는 지, 또한 이 경로에서 일의 의미와 일 자유의지, 진로적응성의 매개효과가 나타나는지 구조방정식 모형을 활용하여 검증하였다. 이를 위해 청년 근로자 500명을 대상으로 설문조사를 실시하였으며, 연구 결과는 다음과 같다. 첫째, 청년 근로자가 인식한 주관적 사회적 지위는 괜찮은 일에 정적이고 직접적인 영향을 미치며, 일의 의미, 일 자유의지, 진로 적응성은 두 변수의 영향 관계에 부분 매개효과를 주는 것으로 나타났다. 또한 주관적 사회적 지위는 일의 의미와 일 자유의지를 높은 수준으로 예측하는 것으로 나타났다. 둘째, 일 자유의지와 진로적응성은 괜찮은 일자리에 직접적으로 유의한 영향을 미치지 않았다. 셋째, 청년 근로자의 일의 의미는 괜찮은 일자리 획득에 매개효과를 주고 있을 뿐만 아니라 직접적으로도 유의미한 영향관계가 있었다. 이러한 결과를 토대로 본 연구의 의의 및 후속 연구에 대한 제언을 제시하였다. This study was conducted by applying the Psychology of Working Theory (PWT) to young workers. Whether the subjective social status perceived by young workers had a significant effect on obtaining decent work, and whether the mediating effect of work meaning, work volition, and career adaptability appeared in this pathway was verified using a structural equation model. The survey was conducted on 500 young workers, and the results of the study are as follows. First, the subjective social status recognized by young workers had a positive and direct effect on decent work, and the work meaning, work volition, and career adaptability had a partial mediating effect on the relationship between the two variables. In addition, it was found that subjective social status predicts the work meaning and work volition. Second, work volition and career adaptability did not directly significantly affect decent work. Third, the work meaning of young workers not only had a mediating effect on obtaining decent work, but also had a significant direct influence. Based on these results, the significance of this study and suggestions for subsequent studies were presented.

치과진료와 방사선촬영 중에 치과위생사의 감염관리행위에 대한 실태조사

최화영 ( Hwa Young Choi ),최용석 ( Yong Suk Choi ) 한국치위생학회(구 한국치위생교육학회) 2011 한국치위생학회지 Vol.11 No.2

Objectives : This study was conducted to investigate the actual state of dental hygienist`s behavior for infection control during dental practice and radiologic examination and to evaluate the dental hygienist`s awareness of the importance of infection control in dental office. Methods : A survey on 218 dental hygienists was carried out. The respondents to complete a questionnaire were the dental hygienists who were in dental office on Gwang-ju area or attended complementary training conducted by the Seoul Branch of Korean Dental Hygienists Association in April 2010. The data were collected and analyzed with x²test, t-test, ANOVA using SPSS program. Results : The ratios of educational experience for infection control in dental practice and radiologic examination room accounted for 87.6% and 30.3% respectively. Behavior degree of mask-wearing in the dental practice and radiologic examination room were 4.60±0.70 and 3.77±1.09 respectively. Behavior degree of glove-wearing in the dental practice and radiologic examination room were 4.40±0.91 and 3.68±1.17 respectively. In case of the relation between educational experience and behavior degree in mask-wearing or glove-wearing, there was no significant difference in the performance of mask or glove wearing during dental practice, and mask- earing during radiologic examination. However, there was a significant difference (p<0.05) in the performance of glovewearing during radiologic examination, which revealed that behavior degree between the respondents having educational experience and the others no having it were 3.92±1.19 and 3.58±1.14 respectively. The surface disinfection control for radiation and protective equipments used in radiologic examination room was done by occasional needs without premeditated schedules. Conclusions : The result of this study shows lower behavior degree during radiologic examination compared with one during dental practice. We suggest that there are needs to raise the awareness of infection control and to improve infection control behavior, and through this study, the importance of education was verified.

머신러닝을 이용한 성인흡연자의 금연행동 예측모델 구축 및 평가

최화영 ( Hwa-young Choi ),이광수 ( Kwang-soo Lee ) 대한보건협회 2021 대한보건연구 Vol.47 No.4

연구목적 : 본 연구의 목적은 머신러닝 알고리즘을 통해 흡연자의 금연행동을 예측하는 모델을 구축하고, 금연행동에 미치는 요인의 영향을 평가하는 것이다. 연구방법 : 연구는 2019년 지역사회건강조사 전국 데이터를 사용하였고, 대상자는 흡연경험이 있는 만 19세 이상 성인으로 하였다. 종속변수는 금연시도와 금연성공을 사용하였다. 금연시도의 연구대상자는 무응답을 제외한 후 84,126명이었고, 금연성공의 대상자 수는 금연시도 경험이 있는 61,784명이었다. 연구대상자의 남녀 비율은 9:1이었고 과적합을 방지하기 위해 남녀를 구분하여 예측모델을 구축하였다. 자료 분석은 SAS 9.4를 이용하여 데이터 전처리, 일반적 특성 파악을 진행하였고, SAS Enterprise-Miner 15.2를 이용하여 모델링 및 비교, 스코어 시각화를 진행하였다. 결과 : 연구의 주요 결과는 다음과 같다. 첫째, 랜덤포레스트 알고리즘을 이용하여 구축한 예측모델은 금연시도와 금연성공을 예측할 때 AUC 값이 0.7~0.8이상으로 안정적이었다. 둘째, 남성은 흡연기간이 길수록 금연시도를 할 확률이 줄어들지만 금연을 하게 될 경우 유지할 확률이 높았다. 셋째, 여성은 흡연기간이 길수록 금연시도 확률이 남성에 비해 큰 폭으로 감소하고, 흡연기간이 길수록 금연성공 할 확률도 감소하였다. 결론 : 연구를 통해 머신러닝 알고리즘을 금연연구에 적용할 수 있는 가능성을 확인하였으며, 성별과 흡연기간이 금연지원 시 주요 고려 변수임을 시사하였다. Objectives : The purpose of this study was to formulate a prediction model for smoking cessation behaviors of adult smokers using machine learning algorithms and to evaluate the effects of factors on the smoking behaviors. Methods : Community health survey in 2019 was utilized, and the study subjects were persons over 19 years of age who smoke or have smoked. Dependent variables were smoking cessation behaviors such as smoking cessation attempts and successful smoking cessation. 84,126 persons had experiences of smoking cessation attempts, and 61,784 persons had experiences of successful smoking cessation. Prediction models were formulated by gender to prevent over-fitting. SAS 9.4 was utilized for the descriptive analysis, and SAS Enterprise-Miner 15.2 was utilized for the prediction model building and to visualize the scores. Results : Study results showed that first, the prediction model using a random forest algorithm had an AUC(Area Under the Curve) of 0.7-0.8 in predicting smoking cessation attempts and successful smoking cessation, which indicates a stable result. Second, men who smoked for a longer period were less likely to attempt smoking cessation but were more likely to maintain their smoking cessation once they succeeded. Third, the likelihood for female smokers to quit smoking dropped quicker than their male counterparts as they smoked for a longer period. Female smokers who smoked longer were also less likely to succeed in smoking cessation. Conclusion : This study suggested the possibility for machine learning algorithms to be adapted to smoking cessation program and suggested that sex and length of smoking periods will be major factors for supporting smoking cessation.

인터넷 개인방송 플랫폼의 경쟁우위에 관한 적소 분석 연구: 이용자 충족요인을 중심으로

최화영(Hwa Young Choi),하승태(Sungtae Ha) 부산울산경남언론학회 2021 지역과 커뮤니케이션 Vol.25 No.1

인터넷 개인방송 플랫폼의 공급과 수요가 증가함에 따라 기존 인터넷 개인방송 플랫폼과 새롭게 시장에 진입한 플랫폼 서비스 간 치열한 경쟁이 벌어지고 있다. 본 연구는 인터넷 개인방송의 이용자 충족요인(적소요인)을 밝히고 적소이론을 적용함으로써, 아프리카TV, 카카오TV, 유튜브 개인방송, 트위치TV 간의 경쟁우위를 분석하고자 했다. 개인방송 플랫폼의 이용 경험이 있는 대학생 196명에 대한 설문 조사를 바탕으로, 기술적 편리성, 광고 회피 가능성, 이용자 유대감, 콘텐츠 유용성, 서비스 신뢰도, 정보전달 속도라는 여섯 가지 유의미한 이용자 충족요인이 도출되었다. 경쟁우위 분석에서는 트위치TV가 가장 많은 충족요인에서 상대적으로 높은 충족점수를 얻었으며 경쟁우위에 있었다. 기술적 편리성 요인에서는 유튜브 개인방송이 가장 높은 경쟁우위를 보였다. 카카오TV는 가장 많은 충족요인에서 경쟁열위에 있었으며, 아프리카TV는 서비스 신뢰도 요인에서 가장 경쟁열위인 것으로 나타났다. 결국, 기술, 콘텐츠, 이용자 네트워크 등에서 주요한 충족기회를 제공하는 것이 플랫폼의 경쟁우위를 점하는 주요 요인으로 판단된다. 본 연구결과는 인터넷 개인방송 이용자들 간의 미디어 선택과 이동에 대한 논리적인 설명을 제공할 수 있을 것이다. As the supply and demand of the Internet personal broadcasting platform increase, the competition between pre-existing Internet personal broadcasting platforms and new challengers is becoming more intense. In this study, we tried to investigate the competition superiority among Africa TV, Kakao TV, YouTube personal broadcasting, and Twitch TV by clarifying the niche factors of user satisfaction about the internet personal broadcasting platforms. We found six significant factors of user satisfaction: technical convenience, ad avoidance possibility, user fellowship, content usability, service reliability, and information transfer speed. In general, Twitch TV appeared to have the highest satisfaction scores on those factors and thus, the highest competitive superiority. Concerning the technical convenience factors, YouTube personal broadcasting showed an overwhelmingly high competitive superiority. Kakao TV and Africa TV were inferior on most of those factors, and Africa TV get lowest score on the service reliability. It can be seen that providing a certain satisfaction opportunity has a great impact on the platform"s competitive superiority. These findings will provide some reasonable expectations about the media selection and migrations among the users of the Internet personal broadcasting platfroms.

초고속 카메라와 삼차원 표면 측정기를 이용한 삭마 재료의 정량적 표면 침식 분석

최화영(Hwa Yeong Choi),노경욱(Kyung Uk Roh),천재희(Jae Hee Cheon),신의섭(Eui Sup Shin) 한국항공우주학회 2018 韓國航空宇宙學會誌 Vol.46 No.9

본 논문에서는 초고속 카메라와 삼차원 표면 측정기를 이용하여 삭마 재료의 표면 침식량을 정량적으로 분석하였다. 대기권 재진입 환경을 모사하기 위해 0.4 MW 아크 가열 풍동을 이용하여 흑연과 탄소/페놀릭 복합재료의 삭마 실험을 수행하였다. 초고속 카메라를 이용하여 실시간 삭마 실험 영상을 획득하고, 이를 분석하여 침식량과 침식률을 산출하였다. 또한, 삼차원 표면 측정기를 이용하여 삭마 전후 시편의 표면 형상을 측정하였으며, 시편의 높이 차이로부터 침식량 분포를 정밀하게 산출하였다. 이를 통해 표면 침식 현상을 종합 분석하는데 있어서 두 측정 결과를 상호 보완하는 것이 유효함을 확인하였다. In this paper, the surface recession of ablative materials was quantitatively analyzed using a high-speed camera and a three-dimensional profilometer. The ablation tests of the graphite and carbon/phenolic composite samples were performed using a 0.4 MW arc-heated wind tunnel for simulating the atmospheric re-entry environment. The real-time images during the ablation test were captured by the high-speed camera, and analyzed to calculate the surface recession and recession rate. Also, the surface data of samples were obtained using a three-dimensional profilometer, and the surface recession was precisely calculated from the difference of height between the surface data before and after the test. It is effective to complement the two measurement results in the comprehensive analysis of surface recession phenomena.

삼차원 표면 측정기와 초고속 카메라를 이용한 삭마 재료의 표면 침식 가시화

최화영(Hwa Yeong Choi),노경욱(Kyung Uk Roh) 한국항공우주학회 2018 한국항공우주학회 학술발표회 논문집 Vol.2018 No.4