• 한국과학교육학회지
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• 제29권8호
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• pp.886-897
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• 2009

학생들의 물리 오개념을 과학적으로 변화시키기 위한 학습전략 중 하나는 학생들에게 인지갈등을 유발시키는 것이다. 인지갈등전략의 핵심적 방법은 학생에게 불일치 상황을 제시하는 것이다. 그런데 학생들이 불일치 현상을 대면하기 전에 자신의 개념을 탐색하고 진술하는 단계에서도 인지갈등을 경험한다는 사례가 보고된 바가 있었다. 이 연구에서는 불일치 현상을 대면하기 전에 유발되는 인지갈등정도를 조사하고 그 인지갈등이 불일치 현상 대면 후에 유발되는 인지갈등과 개념변화에 어떠한 영향을 미치는지 알아보고자 하였다. 이 연구는 광원과 무중력 개념을 소재로 한 교실 수업으로 진행하였다. 연구대상은 부산 소재 중학교 2개교의 학생들이었다. 수업과정에서 사전개념, 대면 전과 후 갈등정도 및 사후개념을 조사하였다. 수업 3주후에는 지연사후개념을 검사하였다. 그 결과 불일치 현상 대면 전의 인지갈등 평균은 대면 후의 인지갈등 평균과 차이가 없었으며 두 인지갈등 사이에는 정적상관이 있었다. 불일치 현상 대면 전과 후의 인지갈등정도가 모두 개념변화정도와 정적상관이 있었는데, 두 인지갈등 중 개념변화를 주도적으로 설명하는 것은 불일치 현상 대면 전의 인지갈등정도였다.

• 한국의류학회지
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• 제32권10호
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• pp.1535-1547
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• 2008

The purpose of this research Is to inquire into the aspects of consumers' perception of age and their lifestyle and to reveal the effect of variability in spending behaviors themselves. A survey was carried out regarding the consumers of the new elderly generation aged 55 and above. 561 respondents were surveyed. residing in Seoul and Metropolitan areas. Factor analysis from the exploratory reconnaissance, Cronbach's $\alpha$, K-average community and multivariate analysis, multi-recurrence and crossing analysis($\chi^2$ verified), were used for statistics analysis. In conclusion, the cognitive age only shared a marginal relationship with lifestyle, most people in their forties stood out in this part of the research. The change of the cognitive age and lifestyle of the new elderly generation is expected to be a variable in the clothing purchasing behavior in the future. As the population of the new elderly generation increases, there is a need for changing views towards the new elderly generation and there is no doubt that it is a main target within marketing trends in the elderly generation industry.

• Journal of Korean Neurosurgical Society
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• 제57권6호
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• pp.440-444
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• 2015

Quality of life is the current trend and issue for the most of human diseases. In moyamoya disease (MMD), surgical revascularization has been recognized as the possible assistance to reduce the neurological insult. However, the progressive nature of the disease has been invincible so far. To improve the quality of life of MMD patients not only the protection from the neurological insult but also the maintenance or improvement of cognitive function is inevitable. For pediatric MMD patients, younger age or longer duration of disease is the key factor among the prognostic factors for bad neurological outcomes. Hence, 'the earlier, the better' is the most precious rule for treatment. Protection from neurological insult is very critical and foremost important to improve cognitive outcome. Clinicians need to know the neuropsychological profile of MMD patients for the care of whole person and make an effort to protect the patients from neurological insults to maintain or improve it.

• 복식문화연구
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• 제16권4호
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• pp.762-774
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• 2008

Recently, silver consumers were became new consumption market. The purpose of this study were to find out the relationships among cognitive age and variables related to hairdressing purchases in hairdressing shop. Data were obtained from 853 women in the 50's and 60's who living in Busan. Data were analyzed by frequency analysis, descriptive analysis, factor analysis, Cronbach's alpha and, $X^2$-test, t-test using SPSS WIN 12.0. The results of the study were as follows: First, Service quality of hairdressing shop were consisted of Personal Service, Facilities Service, Skill Service, and Policy Service. Second, Silver consumers' cognitive age influenced purchase behavior of hairdressing services. Most of respondents were perceived themselves to be younger than their chronological ages. Repurchasing intention of silvers who were active and self-fidelity or perceived themselves cognitively younger were more likely to be influenced by store service quality and consumer satisfaction. This study provides an insight into silver fashion marketers and retailers for developing market strategies for silver fashion market. Implications are drawn for the information useful to consumer behavior researchers and retailers of the silver fashion market.

• Journal of information and communication convergence engineering
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• 제15권2호
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• pp.79-84
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• 2017

In a cognitive radio network (CRN), cognitive radio users (CUs) should be powered by a small battery for their operations. The operations of the CU often include spectrum sensing and data transmission. The spectrum sensing process may help the CU avoid a collision with the primary user (PU) and may save the energy that is wasted in transmitting data when the PU is present. However, in a time-slotted manner, the sensing process consumes energy and reduces the time for transmitting data, which degrades the achieved throughput of the CRN. Subsequently, the sensing process does not always offer an advantage in regards to throughput to the CRN. In this paper, we propose a scheme to find an optimal policy (i.e., perform spectrum sensing before transmitting data or transmit data without the sensing process) for maximizing the achieved throughput of the CRN. In the proposed scheme, the data collection period is considered as the main factor effecting on the optimal policy. Simulation results show the advantages of the optimal policy.

• Child Health Nursing Research
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• 제23권1호
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• pp.10-18
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• 2017

Purpose: The purpose of this study was to identify personal, contextual, and cognitive factors influencing the career preparation behavior of Korean nursing students. In this study, an examination was done of the fitness of a path model for the relationship among these factors based on the social cognitive career theory. Methods: The participants were 413 nursing students in South Korea. Data were collected using self-report questionnaires that included self-esteem, social support, self-efficacy, outcome expectation, career decision level, and career preparation behavior. Data were analyzed using descriptive statistics, Pearson correlation analysis, and path analysis. Results: The factors influencing career preparation behavior were self-efficacy, career decision level, self-esteem, outcome expectation, and social support. The factors influencing career decision level were self-efficacy, outcome expectation, self-esteem, and social support. Conclusion: The findings indicate that self-efficacy is an important factor influencing the career behavior of Korean nursing students. Nurse educators should consider personal, contextual, and cognitive factors of nursing students and develop systemic career guidance programs to help nursing students' career preparation behavior.

• International Journal of Internet, Broadcasting and Communication
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• 제8권3호
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• pp.69-77
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• 2016

Maximum utilization of unused license spectrum is one of key factor in cognitive radio network which can handle the large number of systems and devices connected on smart grid AMI network. The central intelligence control system has responsibility to accept new technologies and users for automation. To ensure a reliable communication in smart grid system through cognitive network, a minimum mean square error (MSE) signal using unused licensed spectrum (or frequency) is necessary to be detected with small decision error. In this paper, we introduce a user control wireless smart grid system with minimum MSE using LMS algorithm.

• 한국의류산업학회지
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• 제11권1호
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• pp.57-65
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• 2009

The purpose of this study was to investigate the effects of cognitive age, service quality, and consumer satisfaction on repurchase intention according to silvers' lifestyle types in the hairdressing shop. Data were obtained from 853 women in the 50's and 60's who living in Busan. Data were analyzed by factor analysis, Cronbach's alpha, cluster analysis and path analysis using SPSS WIN 12.0 and LISREL 8.53. The results of the study were as follows: First. silver consumers were classified by the lifestyle into the Active self-fidelitist, Economy family-oriented, and Passive-stagnant. Service quality of hairdressing shop were consisted of Personal Service, Facilities Service, Skill Service, and Policy Service. Second, according to silvers' lifestyle types, repurchasing intention was differently influenced by cognitive age, perceived store service quality, and consumer satisfaction when hairdressing services. Hairdressers were the most important variable for silver consumers' satisfaction, which influenced the repurchase intention of hairdressing services.

• 한국보건간호학회지
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• 제24권2호
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• pp.173-181
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• 2010

Purpose: The aim of this study was to gauge the social willingness to pay for cognitive enhancement program for elders. Methods: The subjects of this study were 77 subjects >65-years-of-age. The data were collected by direct interviews. The measures of willingness to pay were open-ended question and referendum format. The data were analyzed using descriptive statistics, t-test, $x^2$-test, and multiple regression. Results: Respondents were willing to pay 18,573 won for one use of a cognitive enhancement program for elders. The Monthly income was the only factor that statistically significantly affected willingness to pay. Conclusion: The findings will contribute to policy formulation regarding community based nursing program for elders.

• 교육시설
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• 제12권6호
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• pp.18-25
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• 2005

The purpose of this study is to investigate cognitive gap between users and architectural experts for architectural planning of elementary schools to support effective decision-makings. For this study, each architectural factor was selected from the journals published by Korean Institute of Education Facilities(KIEF) from 2000 to 2004. Among these factors, the priority planning factors were decided through Analytic Hierarchy Process(AHP). The results of this study showed users' emphasis on the amenities of physical environment such as orientation, ventilation, noise, view, but experts' preference on spatial composition of space and function such as orientation, circulation, zoning, parking lot, courtyard. This difference shows clear cognitive gaps between two groups and also suggests factors required to be considered to develop effective decision-making in elementary school planning.