• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• 제21권3호
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• pp.161-167
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• 2010

Objectives: In assessing behavioral/emotional problems in school-aged children, the importance of multi-informant reporting has been well documented. However, in clinical settings obtaining multiple informants' opinions has proven difficult. For that reason, we researched the agreement and predictive validity of the Child Problem-Behavior Screening Questionnaire (CPSQ) in order to reveal how accurate parents' assessments reflected teachers'opinions. Methods: We conducted the first screening for second- and third-grade children from 3 elementary schools in Seoul from 2003 to 2007 using the CPSQ. There were 1178 children included in the analysis. We then administered the Korean version of the Child Behavior Checklist (K-CBCL) as a second screening tool and subsequently, the ADHD Diagnostic System (ADS) and the Korean Educational Development Institute version of the Wechsler Intelligence Scale for Children (KEDI-WISC) was administered by a psychiatrist. We examined each item on the CPSQ and the subscale's agreement between parent and teacher as well as the predictive validity of the CPSQ in children diagnosed with emotional/behavioral problems. Results: The agreement rates between parents and teachers appeared high for questions 18 (0.433), 1 (0.385), and 2 (0.325). Among the subscales, a relatively high correlation was found for externalizing problems, attention deficit hyperactivity disorder, and cognitive problems. For all diagnosed children, their parents revealed a higher sensitivity and lower specificity than teachers. Conclusion: From these results, we confirmed that the CPSQ can be useful for sorting out externalizing and cognitive problems. There is a need for further study, however, with a larger sample size.

• 한국수학교육학회지시리즈E:수학교육논문집
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• 제31권1호
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• pp.17-48
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• 2017

본 연구는 수학불안으로 인해 자신의 충분한 수학적 역량을 발휘 하지 못해 고민하는 일반계 고등학교 2학년 남학생 1명의 수학 불안 치유 사례연구이다. 본 연구에서 수철이(가명)는 수학시험과 관련해서 불안이 높게 나타났다. 이를 치유하기 위해 인지적 처치와 행동적 처치를 실시하였다. 첫째, 인지적 처치로서 자신의 문제 이해하기, 사고 기록지 작성하기, 중간 믿음 바꾸기, 핵심 믿음 바꾸기를 실시하였고 처치과정 속에서 어떠한 인지적 정의적 반응과 변화가 일어나는지 분석하였다. 둘째, 행동적 처치로서 분할노트 작성하기와 동료학습을 실시하였다. 분할노트 작성하기는 노트를 이용하여 나만의 문제를 찾아서 스스로 해결하게 하는 것으로서 이 과정 속에서 어떠한 인지적 정의적 반응과 변화가 일어나는지 분석하였다. 또한 수철이를 힘들게 하는 지나친 경쟁심과 승부욕이 동료학습을 하면서 어떻게 인지적 정의적으로 반응하고 변화하는지 살펴보았다. 연구결과, 수철이의 수학시험불안은 많이 감소되었고 그 밖의 다른 요인들도 감소하였다. 또한 어렵게 느껴지는 수학문제에 도전하여 해결함으로써 자신감을 회복하였고 지나친 승부욕과 경쟁심도 협동심과 배려심으로 승화한 것으로 나타났다.

• 한국보건간호학회지
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• 제11권1호
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• pp.118-127
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• 1997

The physical function. congnitive performance and the depression of the elderly persons of over 60 years in Pusan Kyungnam Province are studied. For the survey, prepared is a questionnaire which includes 14 items for the physical function, 8 items for the cognitive performance and 12 items for the depression. totaling 34 items. The interactions of the items of each category are analyzed in terms of daily life performances. The results show that. the elders have the problems in cognitive performance rather than the physical function or depression, and there are great variances depending on the individual's background.

• 한국초등수학교육학회지
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• 제16권2호
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• pp.295-320
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• 2012

본 연구는 분수의 나눗셈 학습 전에 어떠한 인지구조를 가지고 있으며 학습 후, 분수의 나눗셈 문제를 해결할 때 사전 인지구조에서 개념을 어떻게 연결하는지 알아보기 위해 초등학교 6학년 3명을 대상으로 임상면담을 실시하였다. 면담자료를 개념도로 구조화시켜서 분수의 나눗셈 문제를 해결하는 과정에서 드러나는 학생들의 사고 기제를 분석하였으며 이를 통해 분수의 나눗셈 지도에 대한 시사점을 제안하였다.

• ETRI Journal
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• 제39권3호
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• pp.345-352
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• 2017

Traffic management is a highly beneficial mechanism for satisfying quality-of-service requirements and overcoming the resource scarcity problems in networks. This paper introduces an optimal connection admission control mechanism to decrease the packet loss ratio and end-to-end delay in cognitive radio sensor networks (CRSNs). This mechanism admits data flows based on the value of information sent by the sensor nodes, the network state, and the estimated required resources of the data flows. The number of required channels of each data flow is estimated using a proposed formula that is inspired by a graph coloring approach. The proposed admission control mechanism is formulated as a semi-Markov decision process and a linear programming problem is derived to obtain the optimal admission control policy for obtaining the maximum reward. Simulation results demonstrate that the proposed mechanism outperforms a recently proposed admission control mechanism in CRSNs.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2012년도 추계학술대회
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• pp.797-799
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• 2012

The cognitive radio (CR) network has been studied in the form of open source by vast number of communities, and the potential expectation is very high since the CR is based on reprogrammable platform. However, as the peer-to-peer software has been abused, so high is the chance that the CR network can be abused public wide. Consequently, the benefit from the study of next-generation wireless network can be at risk because law breakers could abuse the CR. In this contribution, we analyze the issues and the problems of the CR and discuss an efficient measure against security attacks.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제8권11호
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• pp.3837-3859
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• 2014

Vehicular Ad hoc Networks (VANET) becomes more popular in industry, academia and government. However, Typical VANET is challenged by high speed mobility and insufficient spectrum resources over congested scenarios. To address those serious problems, some articles have introduced Cognitive Radio (CR) technology into VANET and formed CR-VANET. In this article, we propose an overview of CR-VANET by exploring different architectures and features. Moreover, we provide taxonomy of state-of-the-art papers in this emerging field and the key articles are well analyzed respectively. In addition, we illustrate both research and application frameworks of CR-VANET based on our works, and propose some open research issues for inspiring future work.

• 아동학회지
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• 제15권1호
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• pp.55-69
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• 1994

The purpose of this study was to investigate methodological and theoretical problems in measuring the acquisition of national identity of in-country and over-seas Korean adolescents. The subjects consisted of 574 incountry and overseas (Chinese, Russia and Japan) Korean adolescents (total 509), 15 to 25 years of age. Data were collected with the use of a questionaire, the Scale of National Identity. The results were that (1) the concept of national identity was organized on two dimensions (cognitive vs. sociocultural). The former consisted of 6 cognitive characteristics (uniqueness, sameness, continuity, acceptability, respectability and royalty). The sociocultural dimension consisted of the cognition of 7 sociocultural characteristics (history, norm, fraternity, symbol, consanguinity, Korean language and nationality). Except for consanguinity, there was a close relationship within each and between the 6 cognitive characteristics. Also there was a close relationship within each and between the 7 sociocultural characteristics of national identity. (2) Some demographic variables, such as age of respondents, place of birth and level of understanding of Korean language contributed to acquisition of national identity. (3) Among several demographic variables, nationality was the most explainable.

• 한국수학교육학회지시리즈A:수학교육
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• 제54권4호
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• pp.365-383
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• 2015

Factorization asks the recognition of the structure of polynomials, compared to polynomial expansion with process characteristic. Therefore it makes students experience a lot of difficulties. This study aims to figure out causes of the difficulties by identifying students' cognitive characteristics in factorizing in the perspective of 'structure sense'. To do this, we gave six factorizing problems of three types to middle school students and selected six participants as interviewees based on the test results. They were classified into two categories, structure sense and non-structure sense. Through this interview, we figured out the interviewee's cognitive characteristics and the causes of difficulty in the perspective of structure sense. Furthermore, we suggested some didactical implications for encouraging structure sense in factorizing by identifying assistances and obstacles for recognition of structures.

• 아동학회지
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• 제25권3호
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• pp.41-57
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• 2004

The subjects in this study were 442 5th and 6th grade school children in Seoul. Data were analyzed by Pearson's correlation, Stepwise Multiple Regression, and MANOVA. The principal findings were that worry, depression, and trait anxiety were positively related to meta-cognitive knowledge, particularly, meta-worry, positive beliefs about worry, negative beliefs about worry, lower appraisal about cognitive competence, and cognitive self-consciousness. These traits were also positively related to such metacognitive regulation strategies as worry displacement, self punishment, reappraisal, and social control. Metacognition influenced worry, depression, and trait anxiety; groups having more problems worry, depression, and trait anxiety showed high scores in metacognitive knowledge and metacognitive regulation strategies.