• 아동학회지
• /
• 제21권2호
• /
• pp.33-44
• /
• 2000

In this study, a random sample of 111 six-year-old children were assigned to one of 3 experimental conditions: categorization training using cognitive apprenticeship, categorization training using metacognitive procedures, and no categorization training. Level of intelligence was measured by Raven's(1986) Coloured Progressive Matrics(CPM). No difference was found between apprenticeship and metacognitive training in the high CPM children. In the middle and low CPM levels, cognitive apprenticeship training was more efficient than metacognitive training. This indicates that cognitive apprenticeship, which emphasizes the thinkaloud procedure of both the experts and the novice though modeling and coaching for self-implementation, is a more effective approach than the metacognitive approach for categorization in middle and low CPM children.

• 한국정보시스템학회지:정보시스템연구
• /
• 제30권4호
• /
• pp.153-171
• /
• 2021

Purpose This study is to phenomenologically discover key antecedents and outcomes of behavioral process of SNS users who have multiple SNS sub-accounts. Unlike previous studies that focused on user behavior in the context of a specific SNS platform, this study attempts to describe how and why individual manages their multiple sub-accounts across a variety of SNS platforms. Design/methodology/approach By applying the grounded theory methodology (GTM) to elucidate the unique behavior in SNS platforms, this study has conducted in-depth interview with 14 respondents who handle multiple accounts across the SNS platforms. As a results of analyzing the interview manuscripts, this study has extracted 47 concepts, 10 sub-categories and 6 main categories by conducting open coding, axis coding, and selective coding. Findings By analyzing interview data, this study has derived main categories such as account management, impression management, self-categorization, authority to determine the relationship, digital shadow work, and portfolio SNS accounts from qualitative interview data. This study has also conducted a process analysis that represents how main categories could be inter-related. Based on findings, this study provides a new phenomenological perspective to understand the behavioral process of SNS users' sub-account usage experience.

• 정보처리학회논문지B
• /
• 제12B권7호
• /
• pp.811-822
• /
• 2005

자동문서분류는 문서의 내용에 기반하여 미리 정의된 항목에 자동으로 할당하는 작업으로서 효율적인 정보관리 및 검색등에 필수적인 작업이다. 기존의 문서분류성능 향상을 위한 연구들은 대부분 분류모델 자체를 개선시키는 데 주력해왔으며 통계적인 방법으로 그 범위가 제한되어왔다. 본 연구에서는 자동문서분류의 성능향상을 위해 데이터마이닝 기법과 결함허용방법을 이용하는 개선된 학습알고리즘과 후처 리 방법에 의한 RTPost 시스템을 제안한다. RTPost 시스템은 학습문서 선택작업 이전에 분류항목 설정의 문제를 다루며, 분류함수의 성능보다는 지정방식의 문제점을 감안하여 학습과 분류 후처리 프로세스를 개선하려는 것이다. 이를 통해 분류결과에 중요한 영향을 미쳐왔던 학습문서의 수와 선택방법, 분류모델의 성능등에 의존하지 않는 안정적인 분류가 가능하였고, 이를 분류오류율이 높은 경계선 인접영역에 위치한 문서들에 적용한 결과 높은 정확율을 얻을 수 있었다. 뿐만 아니라, RTPost 프로세스를 진행하는 동안 능동학습방법의 장점을 수용하여 학습효과는 높이며 비용을 감소시킬 수 있는 자가학습방법(self learning)방법의 효과를 기대할 수 있다.

• 한국수학교육학회지시리즈A:수학교육
• /
• 제55권4호
• /
• pp.523-538
• /
• 2016

The purpose of this study is to explore the secondary mathematics teachers' technology integration self-efficacy with respect to geometry classes which they had experienced during last 1 year, 2015. For this study, we developed and validated the questionnaires based on TPACK framework in secondary geometry context. The questionnaires contained 28 items examining the secondary mathematics teachers' TPACK. We conducted the item analysis with 28 items and then the exploring factor analysis. As a result, 28 items was categorized into 5 constructs, TPCK, TCK, TK, PCK, PK, different from Mishra and Koehler's categorization. We analyzed the secondary mathematics teachers' technology integration self-efficacy with respect to geometry classes based on 5 TPACK constructs. The results indicated that there were no significant differences in technology integration self-efficacy according to gender. But technology integration self-efficacy according to the years of teaching experience differed significantly. The more years of teaching experiences teachers have, the lower level of TPCK and TK they have and the more years of teaching experiences teachers have, the higher level of PCK they have. The results also showed that there ware significant difference in TPCK according to the existence and non-existence of taking the technology courses during the time at university. Furthermore, we provide the implication for the professional preparation program for the mathematics teachers in middle schools.

• 한국통신학회논문지
• /
• 제19권10호
• /
• pp.2028-2042
• /
• 1994

ART(Adaptive Resonance Theory) 신경회로망과 같은 자기조직망에서 신호와 잡음을 적절히 정의한다는 것은 어려운 문제이다. 즉, 한 입력 패턴의 일부분이 어떤 패턴에서는 입력 패턴의 신호로 다루어지나 다른 패턴에서는 잡음으로 취급되어야 할 대도 있다. ART 신경회로망 모델은 신호와 잡음의 정의를 문맥과 학습에 따라 적절하게 규정하기 위하여 계산 단위를 자동적으로 자기척도(Self-Scaling 할 수 있는 기능을 가지고 있다. ART 모델에서의 이러한 자기 척도 기능은 입력 패턴들이 유사한 성질을 가진 경우에는 유효하게 잘 동작한다. 그러나 ART 모델은 기본적으로 하나의 경계 인수에 의해 패턴을 분류하기 때문에 여러가지 성질이 복합된 입력 패턴을 효율적으로 분류하기가 어렵다. 예를 들어 패턴들을 자세하게 분류하기 위하여 경계 인수의 값을 크게 하면 잡음으로 취급되어야 할 부분이 신호로 취급되어 불필요한 인식 부류가 발생한다. 또한 경계 인수를 작게 하면 패턴을 구별하기 위한 중요한 정보가 잡음으로 취급되는 경우가 발생하여 비효율적인 분류를 한다. 본 논문에서는 ART 모델의 이러한 문제점을 해결하기 위하여 복합 특징을 분리 처리할 수 잇는 모듈화된 Coupled-ART 신경회로망 모델을 제안하였다. Coupled-ART 신경회로망 모델은 신경회로망의 구조를 기능별로 모듈화하고 이러한 모듈들을 서로 밀착된 구조로 결합하여 확장된 기능을 수행하는 형태로 구성하였다. 이러한 모듈화된 신경회로망을 통해 패턴 인식 과정에서 다양한 크기나 성질을 가진 특징들에 대한 분류를 비슷한 크기나 성질을 가진 특징들끼리 분리하여 분류를 하였다. 그리고 본 논문에서 제안한 상위층에서 각 모듈의 처리 결과를 종합하여 최종적인 분류를 함으로써 기존의 ART 모델보다 더 효율적으로 패턴을 분류할 수 있다.28.8%$)에서 높고 60 및 40%수분구(水分區)($23.6{\sim}24.1%$)에서 낮은 편이었다. 그러나 옥수수의 조섬유함량(粗纖維含量)에 따라 큰 차이(差異)가 없었다. 건엽(乾葉)의 조단백질함량(粗蛋白質含量)에 따라 큰 차이(差異)가 없었다. 건엽(乾葉)의 조단백질함량(粗蛋白質含量)은 60%수분구(水分區)($14.2{\sim}21.6%$) 및 40%수분구(水分區)($13.8{\sim}16.0%$)가 다른 고토양수분구(高土壤水分區)($7.3{\sim}13.9%$)보다 높은 편이었다. 5. 건경중(乾莖中)의 조섬유함량(粗纖維含量)은 $24.6{\sim}36.7%$로서 건엽중(乾葉中)의 함량(含量)보다 월등히 높았고 조단백질함량(粗蛋白質含量)은 $2.0{\sim}5.3%$로서 건엽중(乾葉中)의 함량(含量)보다 현저히 낮았다. 특(特)히 P.931의 건경중(乾莖中)의 조섬유함량(粗纖維含量)은 다른 작물(作物)에 비해 현저(顯著)히 높은 편이었다.적차이(量的差異)를 나타냈다.間)에는 부(負)(-)의 상관(相關)이 있다.($P{\leq}0.01%$). 5. NEL 및 starch value 환경온도(環境溫度)가 상승(上昇)됨에 따라 감소(減少)된다. 4 엽기(葉期) sorghum식물(植物)의 환경온도(環境溫度)를 달리 하였을 때 NEL가치(價値)는 각각(各各) 4.87MJ($30/25^{\circ}C$), 5.46MJ($25/20^{\circ}C$) 및 5.81MJ/kg($18/8^{\circ}C$)로 변(變)하여 고온(高溫)에서 net energy lactation 축적(蓄積)이 크게 감소(減少)되었다.다.

• 수산해양교육연구
• /
• 제25권2호
• /
• pp.510-525
• /
• 2013

The purpose of this study is to investigate adult learners' experience by studying Humanities & General Education and get to know types and characteristics by classifying their learning experiences. This study uses grounded theory method which is suitable to investigate subjective experiences. In this study, data is collected from 13 adult learners by using Focus Group Interview(FGI) who participate in learning experience of Humanities & General Education of D university in Busan region. The data is categorized by open coding, axial coding and selective coding based on data analysis method of grounded theory and analysis processes. This study provides several outcomes as follows: 113 concepts, 38 subcategories and 16 upper categories are derived through the process of abbreviation and categorization of learning experience of Humanities & General Education. In a process of learning experience, this study shows interrelationship in a frame of paradigm and derives results of a process of abbreviation and categorization casual condition, contextual condition, phenomenon and interaction(help/obstruction factor). Tree types of learning experiences and characteristics are drawn as follows: 1) "Self-realization" is the type who participate in Humanities & General Education with desire of learning and they want to find identity and plan detailed future. 2) "The pursuit of happiness" has less desire on learning than "self-realization" and they are types who participate in Humanities & General Education because of someone else's help and suggestion. 3) "Local community" is the type who participate in Humanities & General Education because they feel necessity of social role and they expect local development based on their interest in local community. Several conclusions and suggestions are provided for further studies.

• 가정과삶의질연구
• /
• 제25권1호
• /
• pp.101-112
• /
• 2007

In this paper, 274 traditional fairy tales of South and North Korea were selected for research. The research was performed using a content analysis chart, and found differences in the number of characters, how ideology and social setting affect categorization of the characters, and what values are represented in the fairy tails of each country. Analysis of the general characteristics of traditional fairy tales of South and North Korea shows that South Korean traditional fairy tales have more cases where $1{\sim}4$ characters appear. In North Korean fairy tales, 5 or more characters generally appear. Analysis of the categories of characters in traditional fairy tales of South and North Korea found that characters fall into categories of family, friend and tutor, village, and the native country more often in South Korean fairy tales than in North Korean fairy tales. Character categorizations of county and foreign countries are found more often in North Korean fairy tales. In particular, the difference in character categorization of family, friend and tutor, and county shows that different ideology and social setting affected categories of characters. Research on traditional fairy tales of South and North Korea shows that traditional fairy tales of South Korea have chosen self-respect, self-restraint, fidelity(responsibility), understanding others, manners and honesty as themes more often than those of North Korea and subjects such as frugality, sharing, order and rules, cooperation and patriotism(ecosystem protection) we found more often in those of North Korea.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 2011년도 제42회 하계학술대회
• /
• pp.368-369
• /
• 2011

This article suggests an online-based remote fault current mode discrimination method in order to identify the causes of the power line faults with various causes. For that, it refers to existing cause identification methods and categorizes modes by fault causes based on statistical techniques beforehand and performs the pretreatment process of fault currents by each cause acquired from the fault recorder into a topological plane in order to extract the characteristics of fault currents by each cause. After that, for the fault mode categorization, it discriminates modes by each cause using data by each cause as leaning data through utilizing RBF network based on FCM allowing self-organization in deciding the middle layer. And then it tests the validity of the suggested method as applying it to the data of the actual fault currents acquired from the fault recorder in the electric power transmission center.

• 한국콘텐츠학회논문지
• /
• 제16권1호
• /
• pp.642-654
• /
• 2016

이 연구는 초등학생의 자기관리의 특성을 분석하고 신체활동 자기관리의 검사지를 개발하는데 목적이 있다. 이를 위해 일반학생에서부터 체육영재로 선발되어 훈련받고 있는 학생, 그리고 현재 각급 학교에서 운동선수로 활동하고 있는 어린이들까지 망라하여 총 1005명의 다양한 학생들이 참여하였다. 단계별로 전문가 회의, 귀납적 범주화, 문항분석, 탐색적 요인분석, 확인적 요인분석을 실시하고, 변별타당도 검증을 위해 집단 간 차이검증을 실시하였다. 그 결과, 신뢰도와 타당도 검증을 거쳐 초등학생의 신체활동 자기관리 요인은 운동관리, 생활관리, 재미, 자신감, 부모의 지지, 대인관계 6요인 총 24문항으로 확정되었다. 또한, 변별 타당도를 검증하기 위해 일반 어린이와 체육 영재 어린이의 집단 간 신체활동 자기관리를 검증한 결과 운동관리, 대인관리, 재미, 자신감, 부모의 지지, 대인관계의 모든 변인에서 유의한 차이가 나타났으며, 체육영재 어린이가 일반 어린이 집단에서 보다 신체활동 자기관리의 모든 하위요인에서 더 높게 나타났다. 결과적으로, 초등학교 현장에서 신체활동 자기관리를 진단하는 검사지로서의 타당성을 확보하였다.

• 아동학회지
• /
• 제35권2호
• /
• pp.1-23
• /
• 2014

The purpose of this research was to investigate the most critical variables in the school adjustment of youth. In addition, this research assessed the impact of variables according to the categorization of individual, family, and school domains. To acquire the effect sizes, published studies between 1990 and 2012 were reviewed systematically and synthesized by meta-analysis. The major findings were as follows. First, this study identified a total of 34 variables which can have an influence on the school adjustment of youth and confirmed that 24 of those variables are significant. The most crucial variable that can influence school adjustment is that of a teacher's support. The next most important variables are self-resilience, relationships with friends, and self-efficiency. Focusing on the categorized elements, self-resilience is the most critical variable in the individual domain, the parent-child relation is the most crucial variable in the family domain, and a teacher's support is the most powerful variable in the school domain. Based on these results, this study suggested a number of the indispensable components in interventions to improve the youth's adjustment in school.