• 여성건강간호학회지
• /
• 제6권4호
• /
• pp.477-492
• /
• 2000

The purposes of this study were 1) to identify incidence, severity and duration of morning sickness; 2) to explore the diet relieving nausea; and 3) the demographic factors related to morning sickness. The data were collected on 281 pregnant women by the questionnaire comprized of demographic variables, obstetric characteristics, and pattern of morning sickness from 6 weeks gestational period to 30 weeks, who visited prenatal clinic of three general hospitals and a public health center in Seoul. The data were analyzed with descriptive statistics and $x^2$ test, using the program of SPSS/WIN 8.0. The results were as follows; 1. Incidence of morning sickness comprised of 72.3% pregnant women. Occurrence of morning sickness was gestational mean of 5.93 weeks, and morning sickness ceased after gestational mean of 14.62 weeks. 2. Of those women who experienced morning sickness 27.9% had morning sickness in the morning and 19.7% in the afternoon, and 45.3% had morning sickness for 1 hour in duration and 19.2% throughout the entire day. 3. Of those pregnant women 51.2% had moderate discomfort and 33.5% had severe discomfort in morning sickness. The situations that triggered morning sickness were 'hunger' for 32.9%, 'smell' for 30.3%, and 'cooking' for 23.3%. 4. The affects of morning sickness to lifestyle were 'moderate change' for 39.9%, 'mild change' for 33.5%, and 'much change' for 23.6%. 5. To remedy morning sickness 34.6% of pregnant women tried to eat fruits, and 14.8% tried to drink carbonated beverage. The effective foods relieving morning sickness were fruits for 38.4%, carbonated beverage for 15.6% and dry carbohydrate for 12.0% of pregnant women. The ineffective foods relieving it were milk for 31.0% and dry carbohydrate for 23.7% of pregnant women. 6. The level of relieving of morning sickness by diet were 'mild' for 55.7%, 'no change' for 21.7%, and 'moderate' for 17.7% of pregnant women. 7. There was a significant association with morning sickness and age, but no significant associations with morning sickness and parity, educational level, occupation, type of marriage, and type of family.

• 대한인간공학회지
• /
• 제15권2호
• /
• pp.37-49
• /
• 1996

Morningness-Eveningness Questionnaire (MEQ) of Horne & Ostberg(1976) was translated into a Korean version, and MEQ and life habit inventory was administrated with approximately 900 university students. The distribution of MEQ score was normal. Arising time and bedtine for weekdays and holidays came in the order of morning type, intermediate and evening-type. And the deviation for the evening-type was greatest. Also, the deviation of sleep length for the evening-type was greater than the morning- type. There were tendencies that the bed time and arising time of the male were slightly later than those of the female, and the sleep length of the male was a little longer than that of the female. It also appeared that the arising time was later in the male who completed the military services than those who did not in the chronotype. And the sleep length of the non-served male was longer than that of the served one. Such tendencies noticeably appeared especially the evening-type. The evening-type was subject to heavy variability in bedtime. arising time, and sleep length. The sleep latency of the evening- type was longer and mood on arising was worse. And the ratio of nap or light sleep was higher in these subjects than in others. These results suggested that evening-type students had more irregular and/or flexible sleep-wake habits than the morning-type.

• 대한간호학회지
• /
• 제40권1호
• /
• pp.43-51
• /
• 2010

Purpose: The purpose of this study was to investigate sleep habits, sleep disturbance, and circadian types, and to identify factors influencing sleep disturbance in nursing students. Methods: Participants were 140 senior nursing students. The data were collected from May 19 to 27, 2008 using self-report questionnaires. Results: 1) Evening type delayed sleep-wake schedules were more frequent than for morning type, especially during weekend and evening shift duty. 2) In total sleep time, there were no significant statistical differences between morning type and evening type during weekdays, weekend, day or evening shift duty. 3) On weekdays and day shift duty, the mean score for sleep disturbance was significantly higher in the evening type compared to the morning type. 4) Sleep disturbance in weekday and day shift duty was influenced by circadian types, eating habits, and gender. Conclusion: The circadian types are a very important factor for determining the sleep quantity and quality in nursing students.

• 복식
• /
• 제52권6호
• /
• pp.41-50
• /
• 2002

The purpose of this study is to classify korean clothing image using brainstorming method. Brainstorming theme is selected 'The Land of Morning Calm 'which famed to foreigner about Korea. Brainstorming members were 10 persons for 1st. 9 persons for End. The 119 words of association from 'morning calm'were to extracted at 1st brainstorming. The group of senses image were to classified at End brainstorming. The results of this study were as follows : 1. The clothing image type of tactual sense implied feeling of that downy bedding in a soft spring and grandmother's hands as warm. rough. 2. The clothing image type of smelling sense associated smells of pleasant. mild. and fresh. 3. The clothing image type of auditive sense consisted mainly sense of indirect. resonance. small, and clear sounds. 4. The clothing image type of visual sense associated pure, passive, gentle, and lasting life-force as weeds and wild flowers. Korean line is pointless and rounded curve. Korean form is soft silhouette as streamy, not exaggerate and wavy detail of slim and short. Korean color is not dyed, just natural color and pastel tone. Korean textile is a natural material as linen, ramie. and coarse silk.

• 대한인간공학회지
• /
• 제19권3호
• /
• pp.1-12
• /
• 2000

The Korean version of the morningness-eveningness questionnaire (MEQ) and sleep habits inventory were administered to 1,038 Korean male daytime workers and were analyzed according to age and chronotype to determine what these factors reveal about sleep habits in view of phase difference of circadian rhythm. The mean and distribution of scores on the MEQ moved significantly toward the morning type with aging. Bedtimes and waking times were progressively later from the morning, intermediate, to evening types, and were also earlier with aging. Preferred bedtimes and waking times showed more distinct differences than did the habitual times in each chronotype. The percentage of subjects who answered that sleep length was 'short', mood upon waking was 'bad', and variabilities of bedtime and sleep length were 'large' were greater in the young and evening types than in the elder and morning types, respectively. These findings suggested that subjects were shifted toward the morning type and the phase of circadian rhythm had moved forward with aging. Preferred bedtime and waking time were a better reflection of individual circadian rhythms than habitual bedtime and waking time.

• 한국안전학회지
• /
• 제20권3호
• /
• pp.188-196
• /
• 2005

Accident reports from 1991 to 2000 of a steel company were used to analyze which factors induce industrial accidents. The subjects were 8,311 blue-collar workers, who sustained 114 occupational injuries and work on a continuous full-day 3-team 3-shift system of backward rotation(mornings to afternoons to nights). With respect to marital status, the occupational injury rate(OIR) on the married workers was significantly higher compared to unmarried workers. With respect to no, the OIR of those in their early 20s was significantly higher when compared to other age groups. The OIR of highly educated workers showed a reduction when compared with lower educated workers. The OIR of shift workers were significantly higher compared with the daytime workers. The OIR of type of work decreased across the steel manufacturing process, rolling process, machine maintenance section forwarding products section to the field management section. With respect to the block of shift work(morning, afternoon, and night shifts) by the type of work, the OIR of the night shift was higher than those of the morning shift in the steel manufacturing process or forwarding products section. The OIR of the machine maintenance section was slightly higher in the morning shift than those of the night shift. The OIR of the time of day of the shift workers reached a peak between 09:00 and 11:00. The OIR of a slight injury to shift workers decreased across the night, afternoon, to morning shifts whereas the OIR of a serious injury tended to decrease across the night, morning, to afternoon shift. The body parts most commonly injured were the arm and the crus.

• 태양에너지
• /
• 제5권2호
• /
• pp.60-69
• /
• 1985

A low cost batch type solar heaters (capacity 200 litres) comprising horizontal tanks, which performs the dual function of absorbing heat and storing the heated water, have been designed and fabricated for the purpose of side-by-side testing. Experimental results have indicated that the sufficient hot water can be obtained in the early morning if the glazing is aided by a reflector/insulation cover. The water heater with best thermal performance such as type B supplied water at a maximum mean temperature of $46-49^{\circ}C$ in the summer afternoon and the temperature of $36-39^{\circ}C$ can be obtained in the early morning if insulation cover is used during night time. The equation has been developed for the prediction of hourly variation of the water temperature in the tank.

• 인지과학
• /
• 제33권1호
• /
• pp.51-75
• /
• 2022

경두개 직류전기자극(transcranial Direct Current Stimulation; tDCS)은 지각, 인지, 운동 등의 뇌기능 향상 및 발달 효과가 입증되며, 다양한 분야에서 활용 및 응용되는 비침습적 뇌자극술이다. tDCS 효과는 뇌의 해부학적 구조, 뇌의 노화 정도 등의 뇌신경활성화 특징에 따라 다르게 나타난다는 연구결과들이 보고되고 있다. 일주기 리듬(circadian rhythm)은 대략 하루 주기의 수면과 각성의 생리적 변화패턴을 의미하며 뇌신경활성화 상태는 일주기 리듬에 따라 다르게 나타난다. 일주기 유형(chronotype)은 하루 중에 발현되는 각성도의 크기에 따라 아침의 각성도가 큰 유형은 아침형으로 저녁의 각성도가 큰 유형은 저녁형으로 나누어진다. 본 연구는 일주기 리듬에 의해 변하는 뇌기능 특징이 tDCS 효과에 미치는 영향을 알아보고자 한다. 총 20명의 건강한 성인 대상으로 실험을 진행하였고, 참가자들은 일주기 유형을 분류하기 위해 아침형-저녁형 설문지에 의해 주간형(아침형, 중간형)과 야간형(저녁형)으로 분류했다. 본 실험은 Zoom 프로그램을 이용하여 참가자와 실험자가 온라인으로 만나서 실험을 진행했다. 실험이 확정된 참가자는 실험자로부터 뇌파 기기, 뇌파 데이터를 획득하는 앱이 있는 핸드폰, 핸드폰 거치대, 뇌자극 기기의 사용방법에 대한 설명을 듣고 기기를 테스트해보고 기기를 전달받았다. 기기사용의 어려움을 가진 2명의 참가자는 대면 실험을 진행하여, 실험자가 기기작동을 하여 실험에 참여했다. 일주기 리듬의 상태에 따른 뇌자극 효과를 알아보기 위해 1주일 간격으로 아침과 저녁에 실험했으며, tDCS 자극 전과 후의 신경활성화 반응의 차이를 뇌파를 이용하여 측정하였다. 뇌자극에 의한 뇌기능 변화를 확인하기 위해 자극 전의 뇌파와 자극 후 뇌파가 다른 패턴을 보이며 분류가 잘되는 지를 예측 정확도로 분석했으며, 뇌기능 특징 변화가 일주기 리듬과 일주기 유형에 따라 다르게 나타나는지 확인하기 위해 각 조건의 분류조건(아침/저녁, 주간형/야간형)에서 추출된 주요 EEG 특성을 비교했다. 54개의 뇌파 특성값을 추출하여 SVM(Support Vector Machine) 기계학습 알고리즘으로 분류 모델을 구축하였고, 구축된 모델을 Leave-One-Out 교차검증(Leave-One-Out Cross-Validation)을 사용하여 자극 전과 후의 뇌파 반응을 예측하는지 평가하였고, 분류예측모델의 주요 예측 인자를 확인하는 주요 특성 분석을 진행하였다. 아침과 저녁의 tDCS에 따른 뇌파 특징을 분류하는 예측 정확도는 모두 98%로 나타났으며, 주간형의 아침 자극 조건과 저녁 자극 조건의 예측 정확도는 92%와 96%이며, 야간형의 아침자극 조건과 저녁 자극 조건의 예측 정확도는 모두 94%로 나타났다. 아침 자극 전과 후의 뇌파를 분류하는 상위 3개의 주요 EEG 특성결과는 주간형과 야간형에 따라 다르게 나타났다. 주간형은 좌측 측두 두정엽과 전전두엽의 뇌파 특성값이 나타났으며, 야간형은 측두 두정엽의 뇌파 특성값들만 나타났다. 저녁 자극전과 후의 뇌파를 분류하는 상위 3개의 주요 EEG 특성 결과 또한 주간형과 야간형에 따라 다르게 나타났다. 주간형은 우측 측두 두정엽과 좌측 전두엽의 뇌파 특성값이 나타났으며, 야간형은 측두 두정엽과 전두엽의 뇌파 특성값이 나타났다. 이와 같은 연구결과는 일주기 리듬과 유형에 따라 아침과 저녁의 뇌기능 특징이 다르게 나타나서 뇌자극 효과가 다르게 나타날 수 있음을 확인한 결과이다. 본 연구의 결과는 효과적인 뇌자극을 위해 개인의 뇌신경 활성화 상태 및 특징에 따라서 뇌자극 프로토콜을 조정할 필요성을 제시한다는 데에 의의를 찾을 수 있다.

• 수면정신생리
• /
• 제1권1호
• /
• pp.47-59
• /
• 1994

본 연구는 야간에 아침형과 저녁형사이에 졸리움의 정도, 수행능력, 체온변화의 차이를 객관적으로 검증하고자 하였다. Horne과 $\ddot{O}stberg's$의 아침형-저녁형 설문지(8)의 한국어 번안 설문지에 대 한 신뢰도와 타당도를 검증한 후, 극단적인 아침형과 저녁형 각 8 명을 선발하여 야간에 수면잠복 검사, 다양한 수행검사, 체온 측정을 일정 간격으로 실시하였다. 결과는 전야간에 걸쳐서 아침형군이 저녁형군보다 졸리움이 훨씬 심하였고, 수행검사의 성적도 더 낮았다. 체온은 새벽의 최저점에 이를 때까지 아침형군이 저녁형군보다 더 낮은 상태를 유지하였다. 이러한 결과는 야간에 졸리움, 수행, 체온 사이에 시간적인 관련성이 있음을 가리키며 저녁형이 야간근무에 더 적합할 수 있다는 가정을 지지한다.

• 한국콘텐츠학회논문지
• /
• 제20권8호
• /
• pp.327-337
• /
• 2020

본 연구에서는 논제의 해답을 얻기 위하여 주관성연구 분석방법을 활용하며, 이에 따른 연구문제는 첫째, 효과적인 건강 증진을 위한 식생활 습관에 관한 대학생들의 수용 유형은 어떠한가? 둘째, 이들 각 유형들 간의 동질적인 특성과 그 함의는 무엇인가? 등이다. 분석내용에서는, 대학생들의 '효과적인 건강 증진을 위한 식생활 습관'의 유형(주관적 성향)과 그에 따른 함의점을 알아보는데 주안점을 두었다. Q 방법론으로 분석한 결과, 총 3가지의 유형, 즉, 유형I[(n=9) : 아침밥 먹기 유형(eating type in morning)], 유형II[(n=11) : 야식 안먹기 유형(type of no having a midnight meal)], 유형III[(n=9) : 운동 후 밥먹기 유형(type of mealing after taking exercise)] 등으로 나누어 졌다. 최종적 차원에서, 추후 관련 주제에 관한 양적인 실증연구(R연구)와 해당 전문가들의 심층분석 등의 해결책이 보완되어진다면, 새로운 시대에 적합한 효과적인 건강 증진을 위한 식생활 습관의 개선과 활성화 정책에 도출될 것으로 보여진다.