• Title/Summary/Keyword: Cognitive science

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Researches on Cognitive Process and Their Applications to Organizational Change in Information Systems

  • Sim, Jae-Sung
    • 한국경영정보학회:학술대회논문집
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    • 2008.06a
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    • pp.338-343
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    • 2008
  • Government intervention, industry cooperation, new vendors, and foreign competition are all factors that exert a powerful influence on the information technology, marketplace, and on the individual IS organization. When these influences need to change an organization, it is likely the culture or identity of the organization will be targeted for change. Because an organization is also composed of cognitive frameworks, there is an implication that the existing cognitive structures are in jeopardy. Thus, the cognitive component is important in how all members of organizations react and respond to change. This paper defines cognitive process and its related research history, introduces organizational change matters, tries to solve conflicts in organizational changes, and applies this topic to the information systems field.

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Empirical Analysis of Decision Maker's Schema and Cognitive Fit on Decision Performance

  • Chung, Nam-Ho;Lee, Kun-Chang
    • Asia pacific journal of information systems
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    • v.21 no.2
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    • pp.19-42
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    • 2011
  • This paper proposes a new framework to predict decision performance by investigating the cognitive fit of decision makers. We assume that every decision maker has two kinds of schema: emotional and rational. Cognitive fit is believed to have a close relationship with the two schemata and decision performance. In the literature on decision performance there is few studies investigating the relationship between the two schemata and cognitive fit. Therefore, our research purposes are twofold: (1) to provide a theoretical basis for the proposed framework describing the causal relationships among the two schemata, cognitive fit. and decision performance, and (2) to empirically prove its validity in the application to an Internet shopping environment. Based on the questionnaires from 104 respondents, we used a second order, confirmatory factor analysis (CFA) model to extract valid constructs, and a structural equation model (SEM) to calculate path coefficients and prove the statistical validity of our proposed research model. The experimental results supported our research model.

Prevalence of Cognitive Impairment and Related Factors Among the Elderly in Rural Communities of Jeju Province

  • Ko, Keumja;Jung, Min;Hong, Sungchul
    • Journal of Korean Academy of Nursing
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    • v.33 no.4
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    • pp.503-509
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    • 2003
  • Purpose. The purpose of this study was to survey the prevalence rate of cognitive impairments and to identify the factors influencing cognitive impairment in the elderly in rural communities of Jeju Province. Methods. 590 elderly in 6 rural communities of Jeju Province were interviewed, using a questionnaire consisting of sociodemographic characteristics, health behavior, quality of life, and MMSE-K Results. Prevalence of cognitive impairment was 33.1 % (39.1 % of females, 16.76% of males). Prevalence of dementia was 12.4% (16.3% of females, 2.87% of males). Factors related to cognitive impairment were age, sex, education, standard of living, employment status, and subjective health state. Conclusions. In community health care for the elderly, factors relating to cognitive impairment have to be considered. When planning community health care, priority should be given to the elderly; who need care but live alone; who lack social support; who have a low standard of living; who experience discomfort in the activities of daily living; who believe they are not in a good state of health; or whose life satisfaction is low.

Molecular Simulation of Anagram Problem Solving with PLM (확률 라이브러리 모델(PLM)에 의한 애너그램 문제 해결)

  • Kang, Youn-Jung;Lee, Eun-Seok;Tae, Kang-Soo;Zhang, Byoung-Tak
    • Proceedings of the Korean Society for Cognitive Science Conference
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    • 2005.05a
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    • pp.130-134
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    • 2005
  • 본 연구는 애너그램(anagram) 문제해결 과제에서 발생하는 제약들(영어 철자연쇄 집합의 출현 확률과 단어 내 위치 확률)을 동시에 병렬적으로 만족시키는 확률 모델 학습과정을 보인다. 애너그램에 관한 많은 선행연구들은 이 문제해결 과정이 단순히 기호처리적인 층위뿐만 아니라 하위기호적(subsymbolic) 층위에서의 상향식 처리로 인해 일어남을 밝혀왔고, 주로 영어 철자의 연쇄체의 확률값을 이용해왔다. 본 연구는 확률 라이브러리 모델(Probabilistic Library Model)을 통해 애너그램 문제해결이 한 번씩 끝날 때마다 철자 연쇄체의 출현 및 위치 분포 확률이 어떻게 유연한 변화를 갖는지에 집중한다. 하나의 문제를 풀고 나면 본 모델은 그 전 문제를 풀었을 때의 상태 패턴으로부터 변화를 보인다. 이러한 분포 변화를 통해 하위기호적 활동의 영향이 문제해결에 있어서 학습구조의 유연한 변화에 중요한 영향을 끼친다는 점을 확인했다.

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The Differences In Knowledges Activated inLaboratory and Earth Environmental Contexts (실험실맥락과 지구환경맥락의 문제해결에서 활성화되는 지식의 차이)

  • Lee, Myeong-Je;Kim, Chan-Jong;Choe, Seung-Eon
    • Journal of The Korean Association For Science Education
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    • v.13 no.2
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    • pp.257-271
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    • 1993
  • Four science concepts were selected from high school earth science textbook to investigate the differences in students knowledges activated in laboratory and earth environmemtal contexts. Two items, one is for laboratory and the other for earth environmental contexts, were develped for each selected concept. Students' responses were analyzed in terms of 'Common Activated Knowledges' (CAK), 'Specific Activated Knowledges'(SAK) across students' cognitive frames, grades and sexes. As contextual differences of the problems increased, gender contributed more than other variables to the frequencies of activating CAK and SAK. Context effects were also reported across cognitive frames for CAK, but SAK became more avtivated when the contextual differences of the items become smaller. As a whole, students with laboratory cognitive frames showed more significant context effects than others. Students in 11th grade, with scientific frames and with earth science cognitive frames showed relatively small context effects. The results of the study showed that sciene concepts learned in a laboratory context are not usually transferred spontaneously to earth environmental contexts. Special instructional strategies should developed to overcome the context effects.

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Degree of Science Problem Solving by the Information Processing Types and Cognitive Styles of Elementary School Students (초등학교 학생의 정보 처리 유형과 인지 양식에 따른 과학 문제 해결)

  • Shin, Ae-Kyung;Choi, Byung-Soon
    • Journal of The Korean Association For Science Education
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    • v.20 no.1
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    • pp.155-165
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    • 2000
  • The purpose of this study was to find out the degree of science problem solving by the information processing types and cognitive styles of 235 6th grade students. The results of this study were as follows. First, as the students got higher scores in the two types of information processing, they could solve more science achievement items and creative problem solving items correctly. And as the students got higher scores in simultaneous information processing test, they could solve more scientific concept understanding items. Secondly, as the students were more field-independent, they could solve more science achievement items and creative problem solving items. And especially in solving scientific concept understanding items, much higher field-independence was required. Finally, there was a significant difference on the distributions of cognitive styles by the information processing types. As the students got higher scores in the two types of information processing, their cognitive style tended to be more field-independent.

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Comparing the Ethical Knowledge, Ethical Values and Class Satisfaction by Students' Cognitive Style to Develope the Convergent Nursing Ethic Class (융복합 간호윤리수업 개발을 위한 학생의 인지양식에 따른 윤리지식, 윤리적 가치관과 수업만족도 비교)

  • Jeong, Sun-Young;Kim, Chang-Hee
    • Journal of Digital Convergence
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    • v.13 no.11
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    • pp.205-216
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    • 2015
  • The purpose was to compare the ethical knowledge, values and class satisfaction by students' cognitive style to develop the convergent nursing ethic class considering cognitive style. Questionnaires were collected from 149 freshmen after 12 hours classes for four weeks from October 1st to 30th 2013. Group Embedded Figure Test was used as a cognitive style measurement tool. 62.4% of them were field-dependent. There was a significant difference in cognitive style and ethical knowledge according to high school division. The ethical value was different significantly according to the nursing science satisfaction. Class satisfaction was different significantly according to reason for applying to nursing and nursing science satisfaction. There were no significant differences in ethical knowledge and values by cognitive style. Class satisfaction was higher in field-dependent students. This conclusion will give baseline data to develop nursing education program based on cognitive style.

Analysis of a Trend of Instrument Usage to Assess Cognitive Function of Breast Cancer Patients Undergoing Chemotherapy (항암화학요법으로 인한 유방암 환자의 인지기능 측정도구 사용 실태 분석)

  • Kim, Gyung-Duck;Chung, Bok-Yae;Kim, Kyung-Hae;Byun, Hye-Sun;Choi, Eun-Hee
    • Asian Oncology Nursing
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    • v.11 no.3
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    • pp.179-185
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    • 2011
  • Purpose: This study analyzed recent trends of instrument usage assessing cognitive function of breast cancer patients undergoing chemotherapy. Methods: The researcher collected 64 studies outside the country that were published between January 1996 and August 2010. Results: There was no study on the instrument assessing all domains of cognitive function in breast cancer patients undergoing chemotherapy. Most instruments assessing cognitive function of breast cancer patients have been used for patients with dementia, depression, and/or organic brain damage. Also the objective neuropsychological tests such as the grooved pegboard for the psychomotor area, RCFT copy in visuospatial skill area and the WAIS-III block design have low sensitivity for measuring cognitive function in breast cancer patients, thus they are not good for applying to breast cancer patients. Conclusion: There is a need to develop an instrument which has good sensitivity and specificity for measuring the cognitive function of the breast cancer patients who experienced cognitive impairment after chemotherapy treatment. In addition, the developed instrument needs to be accessible and feasible in any nursing clinical setting for the purpose of accurate assessment and evaluation of the cognitive function among breast cancer patients.

The grading of cognitive state comparisons with different distances across three conditions in stroke survivors

  • Kim, Yumi;Park, Yuhyung
    • Physical Therapy Rehabilitation Science
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    • v.3 no.2
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    • pp.134-141
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    • 2014
  • Objective: The purpose of this study was to compare with different distance across three conditions in stroke survivors with the grading of cognitive state. Design: Cross-sectional study. Methods: Twelve stroke patients who agreed to active participation were included. Participants were allotted to normal cognitive (CN) group (n=7) and cognitive impairment (CI) group (n=5) and then walked on a self-paced walkway at three conditions on the Time Up and Go (TUG) test and the 6 minute walk test (6MWT): 1) walking with your comfortable speed, 2) walking while carrying a tray with glasses, 3) walking with a verbal cognitive task. The TUG test was repeated three successful times on each condition. For the 6MWT, participants were tested one time. Results: The CI group walked slower than the CN group at the three conditions on the TUG test. However, there was no significant difference between two groups to each condition. A significant effect of dual tasking was found only in error of verbal cognitive task condition for the TUG test (p<0.05). On the 6MWT, the participants in the CI group walked short distance rather than the CN group (p<0.05). There were significant differences between two groups not only at all conditions but also at error of verbal cognitive task condition as well (p<0.05). Conclusions: To consider the results of different distances such as the TUG test and the 6MWT, we think that exercises in long distance would be more effective to patients with CI. Those would be improved patient's endurance in cognitive problem.

The Effect of Depression, Nutritional Status and Cognitive Function on Life Satisfaction of the Elderly (노인의 우울, 영양상태 및 인지기능이 삶의 만족도에 미치는 영향)

  • Oh, Yeong-Kyong
    • Journal of the Korean Applied Science and Technology
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    • v.36 no.2
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    • pp.623-634
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    • 2019
  • Our study aims to assess life satisfaction and evaluate its relationship with depression, nutritional status and cognitive function among the elderly. This study is a pathway analysis study using 9089 elderly people and was conducted as a supplemental analysis using the data from the 2017 Korean Elderly Examination Survey. As a result, depression, nutritional status, cognitive function and life satisfaction showed significant correlation. Nutritional status(.46, p=.007), and cognitive function(-.27, p=.014) were directly affected by depression. Both nutritional status(.08, p=.009) and cognitive function(-.03, p=.010) had effect on life satisfaction but life satisfaction was mediated by nutritional status and cognitive function in affecting to life satisfaction. It suggests that nursing intervention is needed for nutritional status and cognitive function for life satisfaction of the elderly.