대상회전 기타 피질이 손상된 흰쥐들의 행동 변화

김정진,김종규,김명석,Kim, Chung-Chin,Kim, Jong-Kyu,Kim, Myung-Suk 대한생리학회 1968 대한생리학회지 Vol.2 No.2

A study was planned to evaluate the effects of removal of the cingulate cortex upon the occurrence of any behavior commonly displayed by the rat, and to compare the effects of cingulectomy with those of removal of the parietal, parieto-occipital, or occipital regions. The subjects were 54 male albino rats (Holtzman strain, body weight $200{\sim}330\;gm$) including 14 rats in which the cingulate gyri between splenium and genu of the corpus callosum were bilaterally ablated by suction (cingulate group), 9 animals which had their parietal cortices (chiefly area 7) partially removed (parietal group), 9 rats whose parietal and occipital regions (chiefly areae 7 & 17), 13 animals in which the occipital cortices (chiefly area 17) were removed bilaterally (occipital group), and 9 normal rats (normal control group). Eighteen observation cages, each of which housed a subject and was provided with food and water ad lib., were arranged in 6 rows on a rack and the behavior of each subject was scanned by an observer at a distance of 1.5 m from the rack. The observer scanned the first and second rows 6 times in 1 min, then proceeded to the 3rd and 4th rows, scanning for another 1 min, and finally to the 5th and 6th rows. The speed of scanning was such that behavioral observations of all of the 18 rats were completed in 3 min, each subject receiving 6 observations. The scanning was repeated every 3 min for 18 min, which constituted one observation session and was followed by a 72 minutes' recess. The whole procedure was repeated through 24 hours so that a total of 576 behavioral observations were made on each subject in 16 observation sessions. Behaviors checked were sleeping, lying, lying and sniffing, standing, standing and sniffing, exploring, eating, drinking, grooming (included were washing, licking, and scratching), and others. Results obtained were as follows: 1. The cingulate group ate significantly more often than the normal control, the parietal, and the parieto-occipital groups. 2. Exploration was significantly less frequent in the cingulate group than in the normal control, the parietal, and the occipital groups. There was, in the case of the cingulate group, a significant negative correlation between the occurrence of eating and the exploratory activity. 3. The general activity, as judged from the value obtained by adding the occurrence of exploration, eating, drinking, grooming, and standing and sniffing, was significantly increased in the cingulate group compared with those of any other groups including the normal control. 4. Though statistically insignificant, the cingulate group slept least often among all the animal groups tested. 5. The parieto-occipital group tended to groom less, and the parietal group to eat less often than the normal control group did, but the difference was not significant. There were no significant differences among all the groups except the cingulate group as regards other behaviors analyzed. Based on the above results, it was inferred that the cingulate cortex exerts an inhibitory influence upon the occurrence of eating and general activity, while it tends to facilitate the occurrence of sleep.

현장일기 - 청력

김정진,Kim, Jeong-Jin 대한산업보건협회 1995 산업보건 Vol.91 No.-

밥상머리교육 모바일 애플리케이션 개발 연구

김정진,Kim, Jung-Jin 대한산업경영학회 2021 산업융합연구 Vol.19 No.4

This study was conducted with the aim of developing a mobile app so that parents and children can provide questions and conversation-based Home Humanity Education. App development was developed in four stages: analysis, design, development, and evaluation by modifying the ADDIE model. In the analysis stage, education goals were set and seven core competencies were extracted for the app. In the design stage, 15 menus, including character to implement seven core competencies, were selected for learning contents. In the development stage, questions were asked based on 1,000 photos, and parents and children naturally talked to strengthen their core competencies. In the evaluation stage, the user's evaluation interview was followed by a reflux process that produced and reflected improvements. Based on research results, it is going to suggest follow-up research on developing apps for home humanity education. First, it is necessary to verify the learning experiences and changes that occur when parents and children use apps for a long time through longitudinal research. Second, a follow-up study is needed on how to use the home humanity education app by age and how to improve it accordingly. Third, as the number of cases in which grandparents raise their grandchildren increases, it is necessary to study the process and learning effects of grandparents and grandchildren using the app. 이 연구는 부모와 자녀가 질문과 대화 기반의 밥상머리교육이 가능하도록 모바일 애플리케이션 개발을 목적으로 진행되었다. 밥상머리교육 모바일 애플리케이션 개발은 ADDIE모형을 변형하여 분석, 설계, 개발, 평가의 4단계로 개발하였다. 분석단계에서는 교육목표를 설정하고, 애플리케이션이 지향할 7개 핵심역량을 추출하였다. 설계단계에서는 핵심역량 7개를 구현할 인성 등 15개 메뉴를 학습내용으로 선정하였다. 개발단계에서는 1,000개의 사진을 기반으로 질문이 제시되어, 부모와 자녀가 자연스럽게 대화를 하면서 핵심역량을 강화하도록 구성하였다. 각 메뉴는 동일한 기능과 사용방법으로 제작되어 사용자 편의성과 효용성을 높였다. 평가단계에서는 사용자의 심층 인터뷰를 통해 개선점을 도출하고, 반영하는 환류과정을 거쳤다. 연구결과를 바탕으로 밥상머리교육용 애플리케이션 개발에 대한 후속연구를 제언한다. 첫째, 부모와 자녀가 장기간 애플리케이션을 사용하면서 일어나는 학습경험과 변화들을 종단연구를 통해 검증할 필요가 있다. 둘째, 밥상머리교육 애플리케이션의 연령별 활용방법과 그에 따른 개선방안에 대한 후속연구가 필요하다. 셋째, 조부모가 손자녀를 양육하는 사례가 늘어남에 따라서 조부모와 손자녀가 애플리케이션을 사용하면서 변화되는 과정과 학습효과를 연구할 필요가 있다.

탄소배출저감형 에코혼화재의 활용방안

김정진,황인성,이상현,Kim, Jeong-Jin,Hwang, Yin-Seong,Lee, Sang-Hyun 한국건설순환자원학회 2011 한국건설순환자원학회지 Vol.6 No.1

병원 사목에 있어서의 의사의 역할

김정진,Kim, Jeong-Jin 한국가톨릭의료협회 1972 한국가톨릭병원협회지 Vol.3 No.1

플라이애시 활용에 의한 콘크리트의 $CO_2$ 저감기술

김정진,Kim, Jeong-Jin 한국건설순환자원학회 2011 한국건설순환자원학회지 Vol.6 No.3

잔골재율의 변화가 유동성 섬유보강 콘크리트의 직접인장 및 휨인장 거동에 미치는 영향

김정진,김동주,조현우,강수태 한국구조물진단유지관리학회 2011 한국구조물진단학회 학술발표회논문집 Vol.2011 No.9

본 연구에서는 잔골재율(S/a)의 변화가 고강도 강섬유를 사용한 섬유보강 콘크리트의 직접인장 및 휨인장 거동에 미치는 영향을 평가하였다. 잔골재율은 0.444, 0.515, 0.615로 변화하였고, 세가지 종류의 고강도 강섬유(smooth, hooked, twisted Fiber)를 부피비로 1.0% 보강하였다. 잔골재율이 증가함에 따라 섬유보강 콘크리트의 유동성은 증가하였지만 직접인장 또는 휨인장 강도가 저하하는 경향을 보였다. 잔골재율이 증가할수록 콘크리트와 섬유 사이 계면에서의 공극이 증가하여 부착강도가 저하되었지 때문으로 판단된다.

Al의 열산화 방법을 이용한 AlGaN/GaN 구조의 표면 Al₂O₃ 패시베이션 효과

김정진,안호균,배성범,박영락,임종원,문재경,고상춘,심규환,양전욱,Kim, Jeong-Jin,Ahn, Ho-Kyun,Bae, Seong-Bum,Pak, Young-Rak,Lim, Jong-Won,Moon, Jae-Kyung,Ko, Sang-Chun,Shim, Kyu-Hwan,Yang, Jeon-Wook 한국전기전자재료학회 2012 전기전자재료학회논문지 Vol.25 No.11

Surface passivation of AlGaN/GaN heterojunction structure was examined through the thermal oxidation of evaporated Al. The Al-oxide passivation increased channel conductance of two dimensional electron gas (2DEG) on the AlGaN/GaN interface. The sheet resistance of 463 ohm/${\Box}$ for 2DEG channel before $Al_2O_3$ passivation was decreased to 417 ohm/${\Box}$ after passivation. The oxidation of Al induces tensile stress to the AlGaN/GaN structure and the stress seemed to enhance the sheet carrier density of the 2DEG channel. In addition, the $Al_2O_3$ films formed by thermal oxidation of Al suppressed thermal deterioration by the high temperature annealing.

전 척추 전.후 방향 검사 시 AEC Mode와 Fix Mode에서 PC-Based Monte Carlo Program을 이용한 장기선량 및 유효선량 평가

김정진,장성원,박장흠,이관섭,하동윤,Kim, Jeong Jin,Jang, Seong Won,Park, Jang Heum,Lee, Kwan Seob,Ha, Dong Yoon 대한디지털의료영상학회 2012 대한디지털의료영상학회논문지 Vol.14 No.2

There are AEC mode and fix mode to exposure when the whole spine antero-posterior radiography is done by using DR equipment. This study compared the utility of fix mode to AEC mode, by evaluating organ dose and effective dose and by examining the quality of radiographic image. GE DEFINIUM 8000 and ART-200X Rando Phantom manufactured by Flukebiometical were used for this study. The Rando phantom was set in front of wall detector of X-rays equipment. AEC mode was set at 80kVp and Fix mode was set at 80kVp, 25mAs, 32mAs, 40mAs, and 50mAs. Whole spine AP image were aquired by combining C, T-L and L-S spine images obtained through 3 exposures. When obtaining C, T-L and L-S spine images, were checked for Air kerma (mGy) value calculated by UNFORS Xi meter attached at the phantom surface of center of radiation field. The effective and organ doses were compared by PCXMC program (PC-Based Monte Carlo Program). The quality of obtained radiographic image was evaluated visually by 3 radiologists using resolution chart. When the effective doses was calculated based on tissue weighting factor of ICRP-103, 1.278mSv was measured by AEC mode, and Fix mode measured 0.405mSv at 25mAs, 0.518mSv at 32mAs, 0.649mSv at 40mAs, and 0.810mSv at 50mAS. In addition, the organ dose measured with esposure at 25mAs by Fix mode was almost equivalent to the organ dose by AEC mode, at the esophagus, thyroid, oral mucosa, salivaly glands located at the cervical spine part, while the organ dose by Fix mode was in general lower than the organ dose by AEC mode at the other organs. When Fix mode at 32mAs, 40mAs, and 50mAs was compared to AEC mode for organ dose in 26 organs, AEC mode had higher measurement in 21 organs but not for than brain, trachea, thyroid, oral mucosa, and salivaly glands which are located at the cervical spine part. The image quality evaluated by resolution test chart was much higher with AEC mode than the quality with Fix mode at all exposure conditions. However, while the image quality of cervical spine exposured at 50mAs by Fix mode was lower than the quality of AEC mode, thoraco-lumbar spine and lumbo-sacral spine were calculated and the quality was similar to AEC mode. Scoliosis occurs mainly at thoraco-lumbar and lumbo-sacral spine, not at cervical spine. Compared to AEC mode, Using the appropriate protocol (80kVp, 50mAs) of fix mode for whole spine AP radiography was thought to be useful because the image quality of the thoraco-lumar and lumbo-sacral spine was similar on AEC mode, Also organ and effective doses can be decreased with Fix mode. Therefore, It is considered that fix mode can be used properly with AEC mode for whole spine AP radiography when considering patient's body posture.

불안장애의 분자유전학적 이해

김정진,Kim, Jung-Jin 대한불안의학회 2007 대한불안의학회지 Vol.3 No.1

Anxiety disorder is likely caused by an interaction of multiple loci in brain, rather than a single locus. Hyperactive neurotransmitter circuits between the cortex, thalamus, amygdala, and hypothalamus are responsible for production of anxiety symptoms. Familial studies performed on anxiety disorder suggested that anxiety disorder should be caused by genetic etiology. Numerous linkage and association studies showed different genetic loci of anxiety disorder. Candidate genes have been focused on important neurotransmitters, neuropeptide, or genes affecting neuronal growth, development, protection or apoptosis. Anxiety disorder has various symptoms and comorbid diseases in family or proband. Therefore, further studies focused on symptomatic dimension of anxiety disorder or responses to drugs are required.