수면량과 집중력의 상관관계

김병우,류지근,박우진,박계원,김미정,임지은,백대현,최재덕,최윤호,이가현,이관,김덕수 東國大學校醫學硏究所 2002 東國醫學 Vol.9 No.1

수면, 기억 그리고 학습의 연관성은 실제 매우 복잡하다. 많은 연구에도 불구하고 명확한 연구결과는 아직 없다. 우리는 이 연구에서 평소와는 달리 시험 전날 수면 변화 양상이 집중력에 어느 정도 영향력을 미치는지 알아보고자 하였고, 이를 이용해 효율적인 수면 관리를 할 수 있는 기초자료로 삼고자 하였다. 동국대 의대 본과 1학년생 중 지원자 30명과 본과 2학년생 10명을 대상으로 평상시 상태와 시험 직후 수면이 부족한 상태에서 각각 K-PES TEST를 실시하여 총 8항목에 걸쳐 암기력, 판단력, 단순반응의 변화정도를 검사하였다. 또 설문조사를 병행하여 결과에 영향을 미칠 수 있는 다른 인자들도 파악하였다. 수면량에 대한 부호 숫자 짝짓기(순간 판단력)을 검사한 결과, 인간의 최대 생리학적 기능은 꼭 수면부족에 의해 좌우되는 것은 아니다. 그러나, 수면감소는 피로를 증가시키고, 동기부여를 감소시키나 단, 새로운 사실을 학습하는 데에는 큰 영향을 끼치지 않는다. 즉, 수면부족으로 장시간 깨어있는 것은 정확성과 반응성을 떨어뜨린다. 흡연에 대한 부호 숫자 짝짓기(순간 판단력)을 검사한 결과, 니코틴의 수면에 대한 상호관계는 알려지지 않았고, 인간의 감정이나 의식, 인식에 영향을 주는 것으로 알고있지만, 장기적은 측면에서 흡연이나 알코올은 인식능력과 무관한 것 같다. 카페인에 대한 숫자 외우기(암기력)검사 결과, 카페인은 spacial selective attention에는 특별한 영향을 주지 않지만 지각과정이나 주의 집중에 큰 효과를 주며, 인간의 의식 수행에 긍정적인 효과를 준다. 즉 카페인은 활력, 혼란, 피로상태를 변화시키고 visual analog scales에서 휴식상태에 가까운 양상을 나타낸다. 또 48시간 동안 수면을 취하지 않은 사람에게 카페인은 집중력과 장시간의 좋은 기분을 유지하게 하였다. 그러나 규칙적, 비규칙적으로 먹는 사람간에는 인지수행력의 차이를 보이지 않으며 상용자에서는 상당한 내성이 보인다. 수면패턴에 대한 숫자 더하기(순간 판단력)검사 결과, 집중력은 수면패턴에 의해서도 영향을 받고, 수면패턴이 바뀌게 되면 순간판단력을 저하시킨다. This study was performed to evaluate relationship of sleep and attention, and to control sleep effectively. We conducted a K-PES test of 40 medical students. K-PES contains eight elements, for example, simple response, selective response, color pairing, OddEven discrimination, number addition, number-symbol matching, memory, right-tapping, left tapping. Through these, we tested changes of memory, judgement, simple response. And we conducted a questionnaire survey to exclude bias. Results are as follows. As a results of number-symbol matching test, we know that sleeplessness is not complete responsible for physiologic function for humans. But, decreased sleep increases fatigue and decreases motivation, but no influence on learning new materials. So, long term sleeplessness decreases precision and responsibility. As a results of number-symbol matching test on smoking, a relationship of nicotine and sleep is not certain. A point of view in long term period, smoking and drinking is not related cognition, even if we know that those influence mood, consciousness and cognition. As a results of memory work test on caffeine, caffeine does not influence spacial selective attention, but mainly does perception, attention and consiousness process. Namely caffeine changes energetic activities, chaos, fatigue states and shows resting state in visual analog scales In sleeplessness for 48 hours, caffeine produced attention and good mood for a long time. But, in case of cognitive process no significance shows in regular or irregular diet. Regular diet shows high resistance. As a results of number addition test on sleep patterns, seep patterns influence attention, changes of sleep patterns decrease a moment judgement.

건강식품 바이탈 및 비지놀의 抗疲勞 效果에 관한 연구

정경수,김혜경,김희수,김계양,곽영숙,김학범 충남대학교 약학대학 의약품개발연구소 1993 藥學論文集 Vol.9 No.-

As a result of extensive research efforts on the oriental medicinal herbs, some of their interesting biological activities have been elucidated. In the present study, antifatigue effects of two natural food supplements consisting of oriental herbs, Vital and Vigilor, were investigated using the ICR mice. The mice were fed with antibiotic-free normal mouse feed containing Vital or Vigilor for 14,28, or 31 days and then subjected to forced swim tests. In a test carried out in melting-ice water, Vital and Vigilor significantly increased the exhaustion times of the 28 day-fed mice by 26.9 % (p < 0.01) and 16.2% (p < 0.05), respectively. However, in the other test performed at 15±0.5℃ using 31 day-fed mice, Vigilor failed to increase the exhaustion time significantly (at p< 0.05), while Vital showed antifatigue effect by increasing the swimming time by 29.9% (p<0.01). Neither of Vital nor Vigilor exerted antifatigue effects in a swim test carried out on day 14 after the initiation of feeding. These results suggest that Vital and Vigilor exhert antifatigue effets when administered for a sufficient period of time by enhancing the health of the host animals.

교근과 이하선 및 하악골에 발생한 횡문근 육종의 치험례

정수일,박재범,이계영,김도균,안재진 大韓顎顔面成形再建外科學會 1998 Maxillofacial Plastic Reconstructive Surgery Vol.20 No.1

피부관리 및 메이크업 교육 프로그램의 운영 실태 및 활성화 방안에 관한 연구 : 부천·인천 소재에서 운영되고 있는 피부미용 프로그램을 중심으로

김정희,김혜수 가톨릭대학교 생활과학연구소 2002 생활과학연구논집 Vol.22 No.1

This study is to suggest ways for the improvement and managemental vitalization of the skin care education program through interview and paper question the women and instructors who participate in skin care and make-up program opened in Bucheon and Incheon area. The result of this research are as follows: By questioning women participantsm found that through newspaper and information tablet they get most of informations that needed to participate in make-up program. And the purpose of their participation is for their spare time by 57.7% and it depends on their incomes. The complaints they made after the program are insufficient installments and place, and money for the materials. Also they want variety of materials and systemic time management and divided the degree of difficulty and reduced number of person in class. The needed things for the vitaliation of program management and improvement of the program are first, differentiation of the difficulty of the program, second, systemic programs for management & installments improvement, third, developments of variety of programs, fourth, personal education for the program improvement, sixth, establishment of professional institution for the special instructors, and fractionized systems for the certificate of qualification.

저밀도 폴리에틸렌에서 도데실 알콜의 혼합량에 따른 트리이 현상 변화에 관한 연구

金正洙,李昌熙,李桂安,金相準 弘益大學校 1990 弘大論叢 Vol.22 No.2

For the purpose of deriving a method of inhibiting tree growth, dodecyl alchol( ?? ) is mixed with low density polyethylene(LDPE) by four different concentration, i.e., 2, 5, 8, 10%. Then under the environment of keeping to apply a.c., 15[kv], the time on which the first tree phenonenum will be reached, is observed. It is resulted that, on the condition of being within 8%, the more the mixing quantity be, the longer the tree inception time is, on the other hand, through to 10%, the time get increased quite slowly. Thus, we take samples mixed with 10% dodecyl alcohol in LDPE. After the initial tree is generated to the point of 300[㎛] under the bias, the bias would abruptly be dropped to 7.5[kv]. After that time, without changing the applying voltage, it is also investigated that the extinguishing time interval gets shorter on the following sequence of the solid state, the freezing, point, and the liquid state, in trun.

조선족 근로자의 사회적 지지, 스트레스, 외로움과의 관계

김옥수,백성희,김계하 성인간호학회 2003 성인간호학회지 Vol.15 No.4

Purpose: The purpose of the study was to examine the relationships among social support (network, composition, and satisfaction), stress, and loneliness in migrant Yanbian Korean workers. Method: Data were collected by using Social Support Questionnaire 6, Visual Analogue Scale, and the Revised UCLA Loneliness Scale. Result: Results indicate that means for social support were 1.52 for network size and 4.83 for satisfaction. The proportion percentage of network for kin members was 67.37. Subjects felt the moderate level of stress and loneliness. The level of loneliness was negatively related to the level of social support. Conclusion: This study showed that there is necessity to reduce stress and loneliness among migrant Yanbian Korean workers. Adequate social support satisfaction is crucial t o reduce the level of loneliness in migrant Yanbian Korean workers.

선천성 일측성 폐정맥 폐쇄증 1 예

김철호,이계영,심영수,김건열,한용철,한성구,정희순,임정기,박재형 대한내과학회 1988 대한내과학회지 Vol.35 No.3

Unilateral pulmonary vein atresia is a rare congenital disease and is frequently associated with intracardiac anomalies. It is usually diagnosed in childhood and is very rarely diagnosed in adulthood. A case of unilateral pulmonary vein atresia in a 20-year old female is de- scribed. The relevant findings were symptoms of exertional dyspnea, roentgenographic evidence of decreased lung volume, increased interstitial infiltration with septal lines in the involved side (right), and aoscence of blood flow in a radionuclide perfusion scan. Pulmonary angiography showed an extremely small right pulmonary artery and thining of the peripheral branches, and nonvisualization of the draining pulmonary veins. Bronchial arteriography showed rommunication between the bronchial artery and the right pulmonary artery and it was drained to the left pulmonary artery. Cardiac catheterization showed no intracardiac anomaly. The right bronchography was normal; pulmonary function studies showed a pure restrictive pattern and markedly in creased physiologic dead space. MRI showed no visible right pulmonary vein.

퍼지 데이터를 이용한 불량률(Ρ) 관리도의 설계

김계완,서현수,윤덕균 한국품질경영학회 2004 품질경영학회지 Vol.32 No.2

Using the p chart is not adequate in case that there are lots of data and it is difficult to divide into products conforming or nonconforming because of obscurity of binary classification. So we need to design a new control chart which represents obscure situation efficiently. This study deals with the method to performing arithmetic operation representing fuzzy data into fuzzy set by applying fuzzy set theory and designs a new control chart taking account of a concept of classification on the term set and membership function associated with term set.

여대생과 직장여성들의 사회적지지, 우울, 음주, 흡연에 대한 비교 연구

김옥수,김계하 성인간호학회 2001 성인간호학회지 Vol.13 No.3

The purpose of the study was to investigate social support, depression, drinking and smoking in college and working females. The convenience sample consisted of 169 college females and 133 working females. Data were collected from March to May 2000. Social support was measured by the 6-item Social Support Questionnaire which assesses the size of the emotional social support network and satisfaction with social support. The Center for Epidemiologic Studies Depression scale was utilized to measure the level of depression symptoms. The average number of drinks and cigarettes smoked per week during the previous month was assessed. Results indicated that college students had more social support than working females. However there were no significant differences in satisfaction with their support. depression. drinking and smoking between two groups. College females who smoked cigarettes were more depressed and had less social support than those who did not smoke. Also college females who drank alcohol were more depressed than those who did not drink during the previous month. However, the level of social support and depression were not associated with drinking and smoking among working females. Based on the results, it is suggested the application of various interventions to deal with drinking and smoking behavior among college and working females.

자외선 조사에 의한 인체 각질형성세포 세포고사 방어인자에 관한 연구

박수홍,박준홍,이종석,황규왕,김계정 순천향의학연구소 1998 Journal of Soonchunhyang Medical Science Vol.4 No.2

Back ground: Human skin is continuously exposed to UV irradiation. Ultraviolet irradiation of human skin cause sunburn cell which is relevant to the apoptosis of keratinocytes. In the epidermis, apoptosis inducing factors and anti-apoptotic factors probably exist to maintain the integrity of keratinocytes. Objective: The purpose of this study was to investigate the exsistence of apoptosis inducing factors and anti-apoptotic defence factors by evaluation of UV induced apoptosis in cultured human keratinocyte and other keratinocyte cell lines(A-431 cells, KB cells) and its susceptibility of UV induced apoptosis in various conditions. Method: In this study, the percentages of apoptosis, necrosis and cell viability of irradiated human keratinocytes and othe keratinocyte cell lines by MMT assay and AO/EO stain. The percentages of those were measured before UVB irradiation and 8, 24, 48 hours after UVB irradiation. Also, the same evaluations were performed with irradiated human keratinocytes cultured without growth factor and with enough growth factors, both results were compared with each other. And the effect of cycloheximide, a protein synthesis inhibitor was evaluated. Also that of aurintricarboxylic acid(ATA), an inhibitor of endonucleases which play an important role in inducing apoptosis of human keratinocytes was evaluated. Result: Human keratinocytes and other keratinocyte cell lines(A-431 cells, KB cells) were cultured in vitro developed maximal apoptosis 48 hours after irradiation, keratinocytes were more resistant to UV induced apoptosis than the others. The withdrawal of growth factors from keratinocyte and addition of cycloheximide decreased the cell survival rate following UV irradiation and increased the induction of apoptosis. And ATA inhibited UV induced apoptosis. Conclusion: These results indicate that human keratinocytes have both anti-apoptotic factors and apoptosis inducing factors to maintain the homeostasis. And survival signals mediated through growth factors or cellular proteins are responsible for the resistance to apoptosis observed in keratinocytes in vitro.