• 대한의용생체공학회:의공학회지
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• 제43권4호
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• pp.185-192
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• 2022

Early detection of mild cognitive impairment can help prevent the progression of dementia. The purpose of this study was to design and validate a machine learning model that automatically differential diagnosed patients with mild cognitive impairment and identified cognitive decline characteristics compared to a control group with normal cognition using resting-state quantitative electroencephalogram (qEEG) with eyes closed. In the first step, a rectified signal was obtained through a preprocessing process that receives a quantitative EEG signal as an input and removes noise through a filter and independent component analysis (ICA). Frequency analysis and non-linear features were extracted from the rectified signal, and the 3067 extracted features were used as input of a linear support vector machine (SVM), a representative algorithm among machine learning algorithms, and classified into mild cognitive impairment patients and normal cognitive adults. As a result of classification analysis of 58 normal cognitive group and 80 patients in mild cognitive impairment, the accuracy of SVM was 86.2%. In patients with mild cognitive impairment, alpha band power was decreased in the frontal lobe, and high beta band power was increased in the frontal lobe compared to the normal cognitive group. Also, the gamma band power of the occipital-parietal lobe was decreased in mild cognitive impairment. These results represented that quantitative EEG can be used as a meaningful biomarker to discriminate cognitive decline.

• 대한건축학회논문집:계획계
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• 제34권11호
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• pp.67-74
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• 2018

With the rapid increase in the elderly population, numerous problems arise related to the decreased cognitive function such as the declines of reaction time and concentration which are both resulting from ageing. Recently, ICT-based smart home and other residential services are being developed as a means of complementing human cognitive functions, but the elderly, who are in most cases digital-illiterate, find it hard to utilize these tools actively and if so it usually takes longer time and endeavor for the elderly to be familiarized with ICT devices. In this context, this study suggests a configuration of the holographic system in houses that complement the cognitive function of the elderly with the consideration of the interaction with the vision which is a critical function in the cognitive process. The method of this study consists of a literature review on topics including the characteristics of the cognitive function among the elderly, holographic technology and residential services; a configuration of residential services for different space types, depending on the aspects of the cognitive function among the elderly; and finally a suggestion of a holographic system configuration and application depending on various scenarios.

• 디지털융복합연구
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• 제17권12호
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• pp.509-521
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• 2019

본 연구는 인지행동치료(Cognitve Behavioral Therapy: CBT)분야 학술지에서 나타난 키워드의 출현패턴을 조사하여 국내 CBT 연구의 지식구조를 규명하는 데에 목적이 있다. 국내·외에서 수행된 CBT 연구를 비교하고자 '인지행동치료'에서 출판된 논문 234편(2008-2019)과 'Cognitive Therapy and Research'에서 출판된 논문 2,316편(1977-2019)이 수집되었다. 자료는 NetMiner 4.3 프로그램으로 분석되었으며 동시출현단어 분석은 코사인 유사도 행렬을 산출하고, 네트워크를 시각화하는 절차로 수행되었다. 본 연구의 결과로 국내 CBT연구자들의 주요 관심사가 식별되었고, 국내 CBT 지식구조는 9개의 연구영역으로 범주화되었다: '척도 타당화', '완벽주의와 속박감', '조현병 환자의 인지, 정서, 관계적 특성', '경계선 성격장애와 우울/양극성 장애 환자의 인지적 특성과 치료', '적응과 심리적 건강', '사회불안장애 환자의 인지적 특성과 치료', '우울의 원인과 공존이환', '수용전념치료', '폭식 장애 환자의 이해와 치료'. 본 연구는 지난 11년 동안 국내 CBT 분야에서 축적된 지식을 점검하였다는 데에 의의가 있으며 국내 CBT 연구의 향후 발전과제로 임상적 실천 표준을 제고하기 위한 연구가 필요하다고 제안한다.

• 디지털융복합연구
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• 제12권2호
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• pp.587-594
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• 2014

본 연구는 지역사회 노인의 인지기능 수준을 파악하고 인기기능저하에 영향하는 요인을 규명함으로써 인기기능을 유지 증진시키기 위한 프로그램을 개발하는데 도움이 될 기초자료를 제공하고자 실시되었다. J시의 65세 이상 노인 481명을 대상으로 2011년 9월 1일부터 9월 7일까지 구조화된 설문지를 이용하여 인구사회학적 특성, 건강관련 특성 및 우울에 대하여 조사하였다. 수집된 자료는 IBM SPSS Statistics V. 20을 사용하여 기술통계, Chi-square test, logistic regression analysis로 분석하였다. 본 연구 결과 대상자의 40.1%가 인지기능저하를 보였으며 인지기능저하와 관련된 요인은 교육수준(p<.001), 연령(p=.000), 우울 및 운동(p<.05)으로 나타났다. 그러므로 운동이나 우울에 대한 중재 프로그램을 집중적으로 시행할 필요가 있으며 특히 교육수준과 연령에 따른 개인차를 고려한 다양한 프로그램이나 교육이 마련되어야 할 것이다.

• 지역사회간호학회지
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• 제7권2호
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• pp.216-228
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• 1996

The purposes of this study were to investigate levels of physical, cognitive, and social functioning in institutionalized elderly. The subjects were 78 residents of a nursing home for the elderly in Pusan. The data were collected from June 24th to July 8th, 1996 using interview and observational method. The structured questionnaires developed by Kim, by Kwon & Park, and by researcher were adopted to measure physical, cognitive, and social function, respectively. The data were analyzed using percentages, means, t test, ANOVA, Pearson correlation coefficient, Cronbach's alpha with the SPSS PC programs. The results were summarized as follows: 1. 34.2% of the subjects had a paralysis, strokes 26.3%, hearing impairment 15.9%, vision impairment 11.8%, mental disturbance 11.8%, cognitive disturbance 10.5%. 2. The mean score on the physical function for the subjects was 73.14, and the items with low functioning levels were 'ascending the stairs', 'bathing' in that order. There was no significant difference in physical function according to the following demographic characteristics: sex, age, and education level. 3. 50.0% of subjects was categorized 'definite dementia', 'questionable dementia' 11.5%, 'definite non-dementia' 38.5%. There was a significant difference in cognitive function according to sex, but were no significant differences according to following demographic characteristics: age and education level. 4. The mean score on the social function for the subjects was 17.60. The items with comparatively high score were in simple activities such as 'enjoying talking with his friends', 'watching TV or listening to the radio', and the items with low score were in complex activities such as 'enjoying a hobby',. 'enjoying a game', 'reading the newspaper or book'. There were no significant differences in social function according to sex and age, but was a significant difference according to education level. 5. Social function was positively correlated with both physical function and cognitive function.

• 한국과학교육학회지
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• 제24권3호
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• pp.596-611
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• 2004

과학학습에서 인지갈등은 개념변화의 중요한 필요조건으로 인식되고 있다. 그러나 아직까지 인지갈등 유형 중 어떤 갈등 유형이 과학학습과정에서 건설적인 갈등유형인가를 제안한 연구는 찾아보기 힘들다. 따라서 이 연구의 목적은 16명의 고등학생을 대상으로 작용 반작용의 법칙과 관련된 불일치 현상(선풍기-수레 문제)을 제시 한 후, 인지갈등의 불안요인 반응에 초점을 맞추어 인지갈등의 불안유형을 구분하고, 불안유형에 따라 학생이 제안하는 설명가설의 특징을 알아보고자 하였다. 연구결과 인지갈등의 불안 요인 반응에 대한 높 낮이에 따라 각각 네 가지 유형의 불안 유형을 확인하였으며, 각 불안유형에 따른 설명가설의 특징과 과학수업에서 인지갈등 수업전략을 적용할 때 중요하게 고려해야할 불안유형의 특성을 논의하였다.

• 대한통합의학회지
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• 제5권2호
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• pp.33-42
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• 2017

Purpose: This study examined the effects of the fumanet exercise program on the cognitive function and fall down-related physical fitness factor in elderly people. Method: The study period was May 2-June 24, 2016. The participants included 20 elderly persons (control group 10, experimental group 10) who registered at the day-care Center in G. City. Descriptive statistics were used for the analysis of the control and experimental groups' general characteristics. The chi-square and Mann-Whitney U tests were conducted to identify the two groups' general characteristics' and dependent variables' homogeneity. The Wilcoxon signed-rank test was used to compare the pre-and post-intervention cognitive function and fall down-related physical fitness factor, and a Mann-Whitney U test was used to analyze the rate of cognitive function and fall down-related physical fitness factor changes between the groups after the intervention. Result: The participants' fall down-related physical fitness factors (balance, gait, leg strength) increased and memory in the cognitive function sub-area improved in the participants who participated in the fumanet exercise program. The amount of change in gait was significantly different between the control and experimental groups. Conclusion: The fumanet exercise program included gait training using the learn, remember and repeat phased steps. Therefore, this study proposes using the fumanet exercise program to improve the elderly's cognitive function and physical fitness factor.

• 한국실내디자인학회논문집
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• 제14권3호
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• pp.181-190
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• 2005

In accordance with the rapid growth of digital media in 1990s, the state of indetermination that is found in digital process has been emphasized in the field of natural science and philosophy. Digitalized space design has been dramatically developed and it raised heated debate and comment on 'folded space' The purpose of this thesis is to explore how the cognitive-ecological factors constitute fold structures in space design of the late 20th century. Syntax of space structure and geometric composition were analyzed to define what types of cognitive-ecological factors are contrived in the process of visual information. In particular, I put higher theoretical emphasis on what characteristics are ensued in the process of structuring spaces than any other subjects. Through theses analyses and discussions, I raised questions on what principles are operating to create new space design that counts on non-linear structure and its formational process. And I also observed what influences these structural principles of design could fundamentally bring to human beings. First, I proposed that we could overcome reductionist space design through cognitive-ecological approach. Some key concepts such as affordance, parallel processing, and redundancy were adopted as defining elements of non-linear structures. As a result of analyses, I found that the cognitive-ecological approach could substitute the reductionist space design of the past. What is also found is that the three variables are the ultimate ecological elements. In addition, as a methodological concept of fold structures, the form of 'topology' was highlighted because it could be a supporting idea to the cognitive-ecological factors. Second, I claimed that non-linear design is more experiential than rational linear design, and it is more efficiently correspondent to human being than any other forms. What is intended and implied in non-linear structure is also indicated.

• 한국안전학회지
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• 제31권3호
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• pp.102-108
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• 2016

As a range of accidents happen frequently in our society due to safety insensitivity, researches on individual psychological characteristics related to safety behavior and on safety education are increasing. However, safety behavior research that targets university students as potential employees remains rare. Therefore, this research investigates individual characteristics and psychological factors that affect safety behaviors of university students. Research participants were 131 university students (80 males, 51 females) from the Gyeonggi-do and Chungnam areas. Psychological characteristics (self-regulation, cognitive failure, conscientiousness, and emotional stability) were included as variables that may predict university students' safety behaviors (habits, compliance, mistakes, and violations). The major findings of the study are as follows. Stepwise regression analysis showed conscientiousness was a major predictor explaining safety habits and safety compliance; Cognitive failure and emotional stability were main predictors explaining safety mistakes, and self-regulation was a major predictor explaining safety violations. These findings suggest that development of proper education programs focusing on individual characteristics would allow systematic improvement of safety behaviors of university students.

• 한국주거학회논문집
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• 제23권5호
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• pp.19-29
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• 2012

It is very necessary to know about child recognition of residential environment to plan and design an environment proper for children's growth and development. The research method using Cognitive Map, which may be defined as "an overall mental image of representation of the space and layout of a setting" can be a good tool for studying child recognition of residential environment. This study analyzed the child recognition of the size of home range, the number of residential environment elements, the types of Cognitive Map and the levels of Cognitive Map to understand the contents of child recognition about their residential environment. Subjects were 206 children in age6, 8 and 10 in Gwanju and Jeonnam area. As the result of the study, we found that 70% of child recognized 100~500 M as the size of home range, and that the number of the elements of residential environment was 7, average. And we also found that sequential map was more popular than spatial map in child's Cognitive Map type and that almost 60% of child respondents drew the Cognitive Map of level 1 complexity type. As the result of this study, we could know that the research method using Cognitive Map was very useful for understanding the child recognition of residential environment.