• 한국융합학회논문지
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• 제13권1호
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• pp.63-70
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• 2022

패션은 개인 취향이 구매의 첫 번째 기준으로 작용하는 분야인 만큼 개인화된 추천 서비스가 일찍이 자리를 잡았다. 특히 모바일 패션 커머스에서 구매전환을 높이는 중요한 전략으로 꼽히며 더욱 정교화 되고있다. 이로 인해 개인화 추천서비스의 사용자 경험 관해 많은 연구들이 이루어졌지만, 세부적인 소비자의 구매여정에 따라 확인한 연구는 부족한 실정이다. 본 연구는 개인화 추천서비스의 사용자 평가가 구매여정별로 차이가 있는지 살펴보고, 구매의도와 만족도에는 어떠한 영향을 미치는지 밝히고자 하였다. 분석결과 다양성, 신뢰성, 편의성은 0.001%수준, 유용성은 0.05% 수준에서 구매여정 단계별로 유의한 차이를 보였다. 또한 만족도는 인지 및 흥미단계에서 새로움과 유용성이, 검색단계에서 신뢰성과 다양성이 높게 나타나는 등 각 단계별로 차이를 보였으며, 구매의도는 구매 후 단계를 제외하고 유용성과 신뢰성이 높은 결과를 보였다. 본 연구는 소비자의 개인화 추천 서비스에 대한 사용자 평가에 차이가 있음을 밝힘으로써 구매 여정에 따른 개인화 추천서비스 사용자 평가의 영향에 대한 이해를 높였다는 점에서 이론적 의의가 있으며, 모바일 패션커머스의 개인화 추천서비스 전략개선의 방향성을 제시했다는 실무적 의의를 지닌다. 추후 개선안의 효과성에 대한 연구가 진행된다면 더욱 고도화된 개인화 추천서비스 전략에 기여할 수 있을 것이다.

• 대한한방내과학회지
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• 제33권4호
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• pp.511-519
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• 2012

Objectives : This study investigated the effect of Sinseonbulchuidan (SBD-1) on hangover syndrome. We undertook this study to test whether SBD-1 is effective in preventing the signs and symptoms of alcohol-induced hangover. Methods : Fifteen healthy volunteers participated in this double-blind randomized crossover study. All participants received either SBD-1 or indistinguishable placebo capsules before alcohol consumption. The primary outcome measure was the difference in hangover severity scores between SBD-1 and placebo intervention. Secondary outcome measure was the difference in profile of mood states (POMS) between SBD-1 and placebo intervention. Results : After alcohol exposure, the overall symptom scores were significantly decreased in the SBD-1 group compared with those given a placebo. The mean scores for the hangover symptoms were high in the placebo group, and statistical significance was observed in 4 symptom scores (loss of appetite, stomachache, nausea, and total score). There were no differences in the POMS and cognitive performance test results between SBD-1 and placebo intervention. Conclusions : We conclude that the SBD-1 is effective in preventing the signs and symptoms of alcohol-induced hangover. Larger studies are required to confirm these findings.

• 한국치위생학회지
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• 제11권2호
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• pp.293-301
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• 2011

Objectives : The aim of the trial was to study the effect of plaque control(tooth brushing instruction) for oral health improvement on periodontitis patients. Methods : 30 patients(35~65 years) with advanced periodontal disease were subjected to a baseline examination including assessment of oral hygiene status(O'leary index), gingival condition(bleeding). the assessment were repeated after 2, 4, 6 weeks. cognitive, behavioral and clinical outcomes were assessed in the primary care setting by questionnaire and clinical oral examination. Results : The oral hygiene status expressed as the individual mean percentage of tooth surfaces with plaque 59.3% at baseline and 21.2% after 6 weeks(p<0.001). The gingival bleeding status expressed as the individual mean point of interdental papilla 3.8 at baseline and 1.9 after 6 weeks(p<0.001). Also, the patients self-assessment about correct tooth brushing behavior was 3.9(5-point likert scales), satisfaction of plan practices 4.1(5-point likert scales), efficacy of tooth brushing instruction 8.7(10-point likert scales). Patients wanted to continuous participation. Conclusions : A verification of effect after individualized oral health instruction and repeated dental plaque control represented to significance on plaque control score, oral care practice and oral health recognition. The important oral care step against periodontal disease is to establish good oral health habits. Also, oral health behavior recognition is more important for the practice of oral health. Therefore professional plaque control and tooth brushing instruction absolutely need in improving oral health.

• 한국컴퓨터정보학회논문지
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• 제19권9호
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• pp.117-124
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• 2014

이 연구에서는 다문화가족지원센터 종사자들의 다문화의 수용성의 인식수준에 대한 분석과 다문화 태도와의 관계에 대한 분석을 이 연구의 목적으로 하였다. 연구목적을 위하여, 다문화가족지원센터 종사자들의 사회통계학적 특성에 따른 다문화 수용성과 다문화 태도의 차이가 어떠한지를 분석한 결과 변수들 간의 차이가 나타났다. 그리고 다문화가족지원센터 종사자들의 다문화 수용성의 다문화관계 형성능력, 다문화적 인식, 다문화적 공감의 요인들이 다문화 태도의 개방성과 수용성, 그리고 융통성에 미치는 영향을 분석한 결과, 변수들 간에 유의한 관계가 나타났다. 이를 통하여 다문화가족지원센터 종사자들의 다문화 태도의 수준을 제고시킬 수 있는 정책적 대안을 제시하였다는데 연구의 의의가 있는 것이다.

• 생물정신의학
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• 제22권2호
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• pp.87-94
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• 2015

Objectives The power spectral analysis of electroencephalogram has been widely used to reveal the pathophysiology of the alcoholic brain. However, the results were not consistent and the three dimensional study can be hardly found. The purpose of this study was to investigate characteristics of the three dimensional electroencephalographic (EEG) activity of alcohol dependent patients using standardized low resolution electromagnetic tomography (sLORETA). Methods The participants consisted of 30 alcohol dependent patients and 30 normal healthy controls. All the participants were males who had refrained from alcohol at least one month and were not taking any medications. Thirty two channel EEG data was collected in the resting state with eyes-closed condition during 30 seconds. The three dimensional data was compared between two groups using sLORETA for delta, theta, alpha, beta1, beta2, and beta3 frequency bands. Results sLORETA revealed significantly increased brain cortical activity in alpha, beta1, beta2, and beta3 bands each in alcohol dependent patients compared to normal controls. The voxels showing the maximum significance were in the left transverse temporal gyrus, left superior temporal gyrus, left anterior cingulate, and left fusiform gyrus in alpha, beta1, beta2, and beta3 bands respectively. Conclusions These results suggest that chronic alcohol intake may cause neurophysiological changes in cerebral activity. Therefore, the measuring of EEG can be helpful in understanding the pathophysiology of cognitive impairements in alcohol dependence.

• 대한의용생체공학회:의공학회지
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• 제33권1호
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• pp.15-24
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• 2012

Classification of human thought is an emerging research field that may allow us to understand human brain functions and further develop advanced brain-computer interface (BCI) systems. In the present study, we introduce a new approach to classify various mental states from noninvasive electrophysiological recordings of human brain activity. We utilized the full spatial and spectral information contained in the electroencephalography (EEG) signals recorded while a subject is performing a specific mental task. For this, the EEG data were converted into a 2D spatiospectral pattern map, of which each element was filled with 1, 0, and -1 reflecting the degrees of event-related synchronization (ERS) and event-related desynchronization (ERD). We evaluated the similarity between a current (input) 2D pattern map and the template pattern maps (database), by taking the inner-product of pattern matrices. Then, the current 2D pattern map was assigned to a class that demonstrated the highest similarity value. For the verification of our approach, eight participants took part in the present study; their EEG data were recorded while they performed four different cognitive imagery tasks. Consistent ERS/ERD patterns were observed more frequently between trials in the same class than those in different classes, indicating that these spatiospectral pattern maps could be used to classify different mental states. The classification accuracy was evaluated for each participant from both the proposed approach and a conventional mental state classification method based on the inter-hemispheric spectral power asymmetry, using the leave-one-out cross-validation (LOOCV). An average accuracy of 68.13% (${\pm}9.64%$) was attained for the proposed method; whereas an average accuracy of 57% (${\pm}5.68%$) was attained for the conventional method (significance was assessed by the one-tail paired $t$-test, $p$ < 0.01), showing that the proposed simple classification approach might be one of the promising methods in discriminating various mental states.

• 정보교육학회논문지
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• 제15권1호
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• pp.93-100
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• 2011

교육용 프로그래밍 언어에 대한 선행 연구에 따르면 프로그래밍 교육은 학습자의 인지기술, 논리적 사고력, 반성적 사고력향상에 도움이 되는 것으로 나타났다. 본 연구에서는 이러한 프로그래밍 교육이 자기주도적 학습능력에 미치는 효과에 대해 알아보기 위하여 스크래치 프로그래밍 교육을 초등학교 6학년 학생들에게 실시하였다. 연구 결과 실험집단이 비교집단에 비해 자기주도적 학습 능력의 하위요소인 개방성, 내재적 동기, 자율성 영역의 신장에 유의한 차이를 보였다. 이러한 효과는 특히 ICT 활용능력이 우수한 학생들에게 더욱 크게 나타났으며, 그 향상 정도는 기존 연구에서 보고한 전자교과서, UCC, 사이버가정학습 활동 후의 자기주도적 학습 능력 향상 결과보다 큰 것으로 나타났다.

• Journal of Nutrition and Health
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• 제38권3호
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• pp.226-231
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• 2005

This study was carried out to evaluate the effects of supplementary diet in infants. Influence of appropriate dietary habits on infants was also examined by being applicable to diets fortified chewiness as a means of intervention. The iron supplementary diet was supported to the healthy infants twice a day for three months. Measures of hemoglobin, hematocrit, RBC count, serum iron, TIBC, ferritin, development examination, and dietary intake patterns of experimental group (n = 25) and control group (n = 20) were performed before and after the intervention. The amount of iron intake from the supplementary diet in the experimental group was $1.77{\pm}0.80 {\cal}mg/day$. After the intervention period, the experimental group not only had increased intakes of grains also decreased intakes of milk. Outcomes observed in infants receiving iron intervention showed that the improved trend of excessive milk intakes and the possibility as a regular diet by serving the iron supplementary diet which can apply to main dish. All measures in blood did not provide significant differences except TIBC between the experimental and the control group before the intervention. But, after the intervention, the experimental group improved most levels of measures, especially significance in hemoglobin, but serum iron. Development of two groups did not differ significantly and both groups were in the range of normal infants' development. However, the levels of MDI and PDI evaluated by BSID-II in the experimental group were slightly higher than the control. Furthermore, the development of cognitive and languistic function was associated with infant growth in the experimental group. In conclusion, this research demonstrated that the iron supplementary diet could affect the iron status and the development of infants despite low-dose supplementation of iron.

• 대한간호학회지
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• 제26권2호
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• pp.320-336
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• 1996

Health promoting behaviors of an individual are affected by various variables. Recently, there has been a growing concern over important health problems of the middle aged women. Physiological changes in the middle aged women and their responsibility for family care can result in physical and psychological burden experienced by middle aged women. This study was designed to test Pender's model and thus purpose a model that explains health promoting behaviors among middle-aged women in Korea. The hypothetical model was developed based on the Pender's health promoting model and the findings from past studies on women's health. Data were collected by self-reported questionnaires from 863 women living in Seoul, between 20th, April and 15th, July 1995. Data were analyzed using descriptive statistics and correlation analysis. The Linear Structural Relationship(LISREL) modeling process was used to find the best fit model which assumes causal relationships among variables. The results are as follows : 1. The Overall fit of the hypothetical model to the data was good expect chi-square value（GFI＝.96, AGFI＝.91, RMR＝.04）. 2. Paths of the model were modified by considering both its theoretical implication and statistical significance of the parameter estimates. Compared to the hypothetical model, the revised model has become parsimonious and had a better fit to the data expect chi-square value（GFI＝.95, AFGI＝ .92. RMR＝.04）. 3. Some of modifying factors, especially age, occupation, educational levels and body mass index (BMI) are revealed significant effects on health promoting behaviors. 4. Some of cognitive-perceptual factors, especially internal health locus of control, self-efficacy and perceptive health status are revealed significant effects on health promoting behaviors. 5. All predictive variables of health promoting behaviors, especially age, occupation, educational levels, body mass index(BMI), internal health locus of control, self-efficacy ＆ perceptive health status are explained 20.0％ of the total variance in the model.

• 보건교육건강증진학회지
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• 제22권2호
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• pp.125-139
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• 2005

Objectives: More than half of youth smokers start to use cigarettes in their middle-school ages. Thus, middle school students should be the primary target population for smoking prevention education although the technical smoking rate is higher in high school students than in middle school students. Based on this significance, this study examined personal and social factors reinforcing non-smoking middle school students to acquire positive attitudes on smoking cigarettes. Methods: A total of 1,081 students of the 3 middle schools in Seoul participated in the self-administered survey. The designated schools were conveniently selected and all the 2nd-grade students of the schools participated in the survey. The questionnaire asked reinforcing social factors of smoking such as, family and parental history of drug use, close-people's smoking and drug use, personal experience of drug use, perceived smoking and drug use knowledge and attitudes, perceived smoking intention in future, and other delinquent behaviors. Results: Personal experience of drug and delinquent behaviors, perceived smoking intention in future, perceived knowledge of smoking, educational experience, and close-people's smoking and drug use were significantly related to students' attitudes on smoking. The significant factors affecting the positive attitudes of smoking were living with broken family and few education experience of smoking in school as social factors and strong smoking intention in future, high score of delinquent behavior, and low score of drug use knowledge as personal factors. Conclusions: Adolescents' strong smoking intention and little smoking education experience would primary personal and social factors reinforcing positive attitudes on smoking. Thus, school-based educational programs preventing smoking intention need to be developed and to be delivered to middle school students to minimize the future smoking population in a long-term perspective.