• 제목/요약/키워드: cognitive variables

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철도기관사의 사고, 우울감, 인지실패 간의 인과관계 검증 (The Verification of Causality among Accident, Depression, and Cognitive Failure of the Train Drivers)

  • 노춘호;신택현
    • 한국시뮬레이션학회논문지
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    • 제25권4호
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    • pp.109-115
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    • 2016
  • 본 연구는 철도기관사에 의해 유발되는 사고와 우울감 및 인지실패 간의 관계를 '우울감 ${\rightarrow}$ 인지실패 ${\rightarrow}$ 사고'의 인과관계로 접근하는 연구모형 1과 '사고 ${\rightarrow}$ 우울감 ${\rightarrow}$ 인지실패'의 인과관계로 접근하는 연구모형 2로 설정하고 어느 모형이 타당한지를 구조방정식 모형으로 검증하였다. 현직 철도기관사 416명의 설문응답 유효데이터를 토대로 검증한 결과 후자의 연구모형, 즉 '사고 ${\rightarrow}$ 우울감 ${\rightarrow}$ 인지실패'의 인과관계에서 사고가 우울감을 매개로 하여 사고에 영향을 미친다는 점에서 모형 2가 통계적으로 타당하다는 결론을 도출하였다. 이 같은 연구결과는 인적오류와 관련하여 사고와 우울감의 인과관계 측면에서 접근하고 제도적인 개선방안을 함께 모색할 때 궁극적으로 기관사의 실수와 인지실패를 저감시킴으로써 인지실패로 인한 사고와 인적 오류의 확률을 그만큼 저감할 수 있다는 것을 시사한다.

최종이용자탐색시스템의 이용과 이용자의 인지적 특성간의 관계 연구 (A Study of Users' Cognitive Characteristics Influencing upon the Usage of End-User Searching Systems)

  • 이상복
    • 한국문헌정보학회지
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    • 제27권
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    • pp.291-339
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    • 1994
  • The purpose of this study is to find personal characteristics that affect users' cognitive characteristics of system, and to verify correlations between this users' cognitive characteristics and selection of system usage in using end -user searching systems (EUSS), For corroborative analysis of this study, preliminary model was constructed referring to Davis' Technology Acceptance Model. The model consists of exogenous variables (personal characteristics) , parameter variables (perceived usefulness, perceived ease of use), and effect variables (selection of system usage), When exogenous variables affect parameter variables, exogenous variables are independent variables and parameter variables are dependent variables. In addition, in correlation of parameter variables, which have been affected by exogenous variables, with effect variables, parameter variables are independent variables and effect variables are dependent variables, As for the research methodology, this study regards the Academic Information System connected with the Internet as EUSS, So questionnaires have been sent to researchers in universities who were conducting direct searching for the system. 229 valid responses to questionnaires have been analyzed according to Pearson Correlation Analysis and Stepwise Selection of Multiple Regression in the statistical software packages, 'SPSS PC+'. The findings and conclusions made in this study are summarized as follows; 1. Among the personal characteristics (age, disciplinary, computer literacy level, perceived usefulness of use education and training, perceived satisfaction of end-user searching, perceived satisfaction of system characteristics), all characteristics but age affect perceived usefulness and perceived ease of use. Specifically, perceived satisfaction of end user searching and perceived satisfaction of system characteristics most affect perceived usefulness and perceived ease of use respectively. 2. Perceived usefulness and perceived ease of use have a direct effect on selection of system usage in using EUSS. 3, Perceived usefulness more affect selection of system usage than perceived ease of use in using EUSS.

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간호학생의 건강행위에 관한 연구 (A Study on Health Behavior of Nursing Students)

  • 최미경
    • 보건교육건강증진학회지
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    • 제15권2호
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    • pp.185-198
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    • 1998
  • This study was designed to investigate the content of health behavior and to examine factors determining health behavior of nursing students(n=159) in relation to sociodemographic and cognitive variables. Cognitive variables were categorized into saliency of health, susceptibility to illness, and health locus of control. Data analysis prodecure included factor analysis and stepwise multivariate regressions using health behavior as dependent variables. Analysis showed; 1. As a whole, nursing students showed a tendency of lack in positive health behavior, especially in diet-related health behavior. 2. Multiple regression analysis revealed that the factors such as grade, saliency of health, and birth place were to be independently and significantly associated with health behavior: Upper grade students, high level of saliency, urban-born students tend to take health behavior positively. 3. The most influential factor among them was grade, but cognitive inspite of stereotype, poorly impact on health behavior with the exception health. We can guess the effect of education indirectively from these findindgs, but longitudinal studies need to consider the direct effect of education. The results also indicate that the respondents should be encouraged to take health behavior positively. The studies including more other cognitive variables would be conducted for the nursing students in relation to health behavior.

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예비유아교사의 인지전략과 자기결정성 동기와의 관계 (Relationship Between Cognitive Strategies and Motivation for Self-determination in Preservice Kindergarten Teachers)

  • 이혜주
    • 아동학회지
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    • 제27권2호
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    • pp.55-69
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    • 2006
  • This study investigated relationship between preservice kindergarten teachers' cognitive strategies and self-determination motivation types. Cognitive strategies were measured by 3 variables surface, deep, and metacognitive strategies; motivation for self-determination was measured by 7 variables; intrinsic motivation(IM) to know, IM to accomplish, IM to experience stimulation, external regulation, introjected regulation, identified regulation, and amotivation. The Motivated Strategies for Learning Questionnaire(Pintirch & DeGroot, 1990) and the Academic Motivation Scale(Vallerand et al., 1992, 1993) were administered to 82 subjects. Data were analyzed by Pearson's correlation, multiple regression analysis, and canonical correlation analysis. Finding were a positive correlation between IM to know and IM to accomplish. IM to accomplish positively predicted surface, deep, and metacognitive strategies, and identified regulation positively predicted deep cognitive strategy. Amotivation negatively predicted deep and metacognitive strategies.

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학령기 아동의 자기보호와 부모감독에 따른 또래관계 및 인지적 자기능력 지각 (The Effects of Self-care and Parental Monitoring on Peer Relations and Perceived Cognitive Self-Competence of School Age Children)

  • 천희영;옥경희;김미해
    • 대한가정학회지
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    • 제39권10호
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    • pp.153-168
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    • 2001
  • The objects of this study were to find out the effects of peer relations and perceived cognitive self-competence according to 1) grade, sex, and self-care, 2) parental social status and monitoring. 429 3rd- and 6th-graders (238 boys and 191 girls) were included as subjects. For measuring variables, RCP, Harter's Perceived Cognitive Self-Competence Rating Scale, and Parental Monitoring Questionnaire based on Crouter et al.(1990) were used. The data were analysed by MANOVA, t-test, and univariate ANOVA. The results were as follows.‘Social-Leadership’of peer relations was influenced by children's grade, grade $\times$ sex effects. 3-way interaction of children's variables and parental monitoring made significant differences in ‘Shy-Isolation’. Children's perceived cognitive self-competence was influenced by their grade and parent's social status. These results confirmed the significant roles of self-care and parental monitoring in children's development.

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Prediction of Cognitive Ability Utilizing a Machine Learning approach based on Digital Therapeutics Log Data

  • Yeojin Kim;Jiseon Yang;Dohyoung Rim;Uran Oh
    • International journal of advanced smart convergence
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    • 제12권2호
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    • pp.17-24
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    • 2023
  • Given the surge in the elderly population, and increasing in dementia cases, there is a growing interest in digital therapies that facilitate steady remote treatment. However, in the cognitive assessment of digital therapies through clinical trials, the absence of log data as an essential evaluation factor is a significant issue. To address this, we propose a solution of utilizing weighted derived variables based on high-importance variables' accuracy in log data utilization as an indirect cognitive assessment factor for digital therapies. We have validated the effectiveness of this approach using machine learning techniques such as XGBoost, LGBM, and CatBoost. Thus, we suggest the use of log data as a rapid and indirect cognitive evaluation factor for digital therapy users.

유아의 영재성과 또래유능성 및 자아지각과의 관계 (Analysis of the Relationships among Preschoolers' Self-Perception,Peer Competence, and Giftedness)

  • 손지향;이순복
    • 대한가정학회지
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    • 제47권5호
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    • pp.1-11
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    • 2009
  • The purpose of this study was to examine the relationship between preschoolers’ self-perception, peer competence and giftedness. The subjects in this study were 101 preschoolers between the ages of 4 and 5 who attended childcare centers and private kindergartens in Pohang city area. The major findings of this study were as follows: Firstly, there were significant negative correlation between cognitive ability variables of self-perception and aggressive and asocial variables of peer competence. Secondly, there were significant positive correlation between cognitive ability variables of self-perception and humor variables of giftedness. Furthermore there were significant positive correlation between mother acceptance variables of selfperception and logical thinking, task commitment and humor variables of giftedness. Finally, there were significant negative correlation between hyper-distractible variables of peer competence and independence variables of giftedness.

과학적 사고력 발달에 영향을 미치는 변인의 회귀분석 결과 (An Regression Analysis for Variables on Effect of Development of Scientific Thinking)

  • 김영신;정완호
    • 한국과학교육학회지
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    • 제21권4호
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    • pp.710-724
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    • 2001
  • 본 연구는 과학적 사고력에 영향을 미치는 변인의 설명력을 분석하는데 그 기본 목적이 있다. 이를 위하여 5학년,8학년,11학년 학생 총 375명을 대상으로 과학적 사고력에 영향을 줄 것으로 가정한 변인을 조사하여 분석하였다. 본 연구의 결과, 과학적 사고력에 대한 학습자의 인지적 변인의 설명력은 약 60%, 심리적 변인 10%, 가정 변인 5%, 학습환경 변인 10%였다. 이들 변인이 과학적 사고력을 최대 85% 설명하였다. 학년에 따라서 과학적 사고력에 직접적인 영향을 주는 것은 학습자의 인지적 변인, 심리적 변인, 가정 변인, 학습환경 변인이었다. 가정 변인과 학습환경 변인은 과학적 사고력에 간접적인 영향을 주었다. 또한, 학교급에 따라서 그 설명력은 차이가 있었다. 따라서 학교급에 따라 과학적 사고력을 향상시키기 위한 전략에 차별화가 필요하다.

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비례 문제 해결에 영향을 주는 인지적 변인 분석 (Analysis on cognitive variables affecting proportion problem solving ability with different level of structuredness)

  • 성창근;이광호
    • 대한수학교육학회지:수학교육학연구
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    • 제22권3호
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    • pp.331-352
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    • 2012
  • 이 연구는 비례문제 해결에 영향을 주는 인지적 변인이 무엇인지 확인하는 것을 궁극적인 목적으로 한다. 이를 위해 비례 문제를 구조화 정도에 따라 잘-구조화된 문제, 구조화된 문제, 비-구조화된 문제로 분류하고, 이론적 고찰을 통해 비례문제 해결에 영향을 주는 인지적 변인으로 사실 알고리즘 지식, 개념적 지식, 문제유형 지식, 양의 변화 인식, 메타인지를 추출하였다. 중다회귀분석 방법을 사용해 구조화 정도가 다른 문제를 해결하는데 유의하게 영향을 주는 인지적 변인이 무엇인지를 분석하였다. 분석 결과 구조화 정도가 다른 문제를 해결하는데 서로 다른 인지적 변인이 영향을 주었다. 즉 잘-구조화된 문제 해결에는 사실 알고리즘 지식과 문제유형 지식, 그리고 구조화된 문제 해결에는 개념적 지식, 문제유형지식, 양의 변화 인식, 마지막으로 비-구조화된 문제해결에는 메타조절, 개념적 지식, 양의 변화 인식, 문제유형지식이 영향을 주었다. 이처럼 문제 유형에 따라 다른 인지적 변인이 영향을 미치기 때문에, 수학수업에서는 문제 유형에 따라 다른 교수학습 방법과 다른 평가 틀을 적용할 필요가 있으며, 더불어 학생들의 비례 문제 해결 능력을 계발하기 위해서는 수학 수업에서 구조화된 문제와 비-구조화된 문제를 적극 활용할 필요가 있다는 결론을 도출할 수 있었다.

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파킨슨병 환자의 인구학적.임상적 특성에 따른 우울, 일상생활 수행능력 및 인지기능 (Influence of Clinical and Demographical Variables on Depression, Instrumental Activities of Daily Living, and Cognitive Function in Patients with Parkinson's Disease)

  • 송경애;최동원;박혜자
    • 기본간호학회지
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    • 제13권2호
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    • pp.249-256
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    • 2006
  • Purpose: To investigate the influence of clinical and demographical variables on depression, instrumental activities of daily living (IADL), and cognitive function in patients with Parkinson's disease. Method: Using a structured questionnaire data were collected from 100 participants registered in the neurology department of C university hospital. Duration and stage of disease, fall history, vision impairment, duration and quality of sleep, orthostatic hypotension, ambulation impairment, and use of walking aid were included in clinical variables. Depression, IADL, and cognitive function were assessed using Kee's GDSSF-K, Cho's scale, and K-MMSE. Collected data were analyzed using the SAS program. Results: The depression score for the participants was 7.78, higher than cut-off score(5). Participants who were male, living with spouse, above high school education, high economic status, with no vision impairment, and no ambulation impairment revealed high cognitive scores. Average IADL score were significantly higher for participants who were male, who had high economic status, low stage of disease, and no ambulation impairment. Depression IADL & cognitive function scores were significantly different according to ambulation impairment. Scores for ADL and cognitive function were positively correlated. Conclusion: It is recommended that make programs for patients with Parkinson's disease, clinical and demographic variables should be considered according to their individual needs.

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