• 한국수학교육학회지시리즈A:수학교육
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• 제56권3호
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• pp.281-300
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• 2017

This study analyzed the difficulties of middle school students in computer simulation of the law of large numbers through eye movement analysis. Some students did not attend to the simulation results and could not make meaningful inferences. It is observed that students keep the existing concept even though they observe the simulation results which are inconsistent with the misconceptions they have. Since probabilistic intuition influence student's thinking very strongly, it is necessary to design a task that allows students to clearly recognize the difference between their erroneous intuitions and simulation results. In addition, we could confirm through eye movements analysis that students could not make meaningful observations and inferences if too much reasoning was needed even though the simulation included a rich context. It is necessary to use visual representations such as graphs to provide immediate feedback to students, to encourage students to attend to the results in a certain intentional way to discover the underlying mathematical structure rather than simply presenting experimental data. Some students focused their attention on the visually salient feature of the experimental results and have made incorrect conclusion. The simulation should be designed so that the patterns of the experimental results that the student must discover are not visually distorted and allow the students to perform a sufficient number of simulations. Based on the results of this study, we suggested that cumulative relative frequency graph showing multiple results at the same time, and the term 'generally tends to get closer' should be used in learning of the law of large numbers. In addition, it was confirmed that eye-tracking method is a useful tool for analyzing interaction in technology-based probabilistic learning.

• 한국학교보건학회지
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• 제29권3호
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• pp.235-244
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• 2016

Purpose: The purpose of this study was to investigate factors effecting the psychological well-being of adolescents who attend a community child center. Methods: The survey was conducted on 143 children attending a community child center in P city with a structured self-report questionnaire from August 20 to September 20, 2016. Data were analyzed through descriptive statistics, t-test, ANOVA, $Scheff{\acute{e}}$ test, Pearson's correlation coefficient, and stepwise multiple regression, using SPSS/WIN version 18.0. Results: There were significant differences in psychological well-being according to grade, one of the general characteristics of the subjects. There was a significant positive correlation between ego-resilience, social support, subjective well-being, and psychological well-being. From the multiple regression analysis, the most significant factors affecting psychological well-being were subjective well-being (${\beta}=.56$) and grade division (${\beta}=.19$). These variables explained 38.0% of the total variance in psychological well-being. Conclusion: Considering the results of this study, it is desirable to develop measures to increase adolescents' subjective well-being and provide support according to grade in order to improve the psychological well-being of the adolescents attending community children centers.

• 대한물리치료과학회지
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• 제1권2호
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• pp.223-234
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• 1994

To investigate the affecting factors to the fatigue and subjective symptoms of adult women, the author analyzed the data from 300 women from 3 groups, manufacture workes, clerical workers and service workers, from august 31, 1993 to the September 30, 1993. Followings are the results there from. 1. For the physical symptoms of fatigue, more than 50 % of respondens comiained were "eye strain" with 73.7 %, "malaise" with 67.0 % "went lay down side" with 60.7 %, "yawing" with 60.3 % and "feel sleep" eith 50.3 % in that order. There was no statistically significant difference between labor woker group, but the fatiger rate was highest among office group. For the mental symptoms. There was no symptom over 50 % of responders complained. For the neurotic symptoms, more than 50 % of respondents complained were "backache" with 53.7 %, "headache" with 49.7 % "shoulder pain" with 54.0 % and "unconfortable" with 43.3 %, in that order, "backache" was higest in manufacture group, but the other symptoms were highest among office group. 2. For the most fatigue weekday, most women answered monday with 56.0 % thursday with 16.3 % and friday with 12.0 % in that order, but saturday was 2.0 %, and sunday was 2.05 labor worker group answered monday was the most fatigue day. 3. 37.7 % of respondents answered afternoon was the most fatigue hours, but 22.0 % was answered evening difference among groups. 4. Nothing to do with the general characteristics, such as age, residence, sleep hours, personality, health status, and exercise, and working conditons such as means to attend office, time to attend office, job satisfaction, work hours, and work years, the mean scores of subjective symptoms of fatigue was highest among office group.

• 한국정보과학회논문지:시스템및이론
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• 제28권11호
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• pp.549-560
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• 2001

클러스터 시스템을 계산능력과 메모리 크기에 있어서 바람직한 확장성을 제공한다. 또한 고속의 컴퓨터 네트워크 기술의 발달로 인해 클러스터 시스템은 값비싼 MPPs (Massively Parallel Processors)와 비교하여 경쟁력을 얻고 있다. 부적당한 작업 스케줄링은 시스템의 기능을 충분히 이용할수 없고, 병렬처리 프로그램에서 프로그램 실행 전에 각 태스크의 부하를 예측하기 어려우며, 태스크들은 다양한 형태로 서로 의존적이다. 동적 부하균등 알고리즘에서는 실행시간에 각 프로세서의 부하를 평가한 후, 각 태스크를 적절한 크기로 분할하고 그것들을 각 프로세서의 수행능력에 비례하여 클러스터 시스템에 할당한다. 그러나, 프로세싱 노드간의 통신비용이 높으면, 모든 노드들이 부하분산에 참여하는 것은 효율적이지 못하다. 본 논문에서는 부하분산에 참여하는 프로세서를 통신비용과 평균 부하로부터의 편차를 고려하여 제한하였다. 기존의 부하균등 방식과 제안된 동적 알고리즘을 비교하기 위하여, 통신비용, 노드 수, 그리고 부하의 범위와 같은 파라메터를 사용하여 다양한 모델의 클러스터 시스템에 관한 시뮬레이션을 수행하였다.

• Annals of Clinical Microbiology
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• 제21권4호
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• pp.69-74
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• 2018

진단검사의학은 신속하고 정확한 체외검사 결과를 제공함으로써 임상의사가 환자를 진료하는 데 도움을 주는 전문 분야이다. 정확한 검사 결과를 제공하기 위해서는 검사에 관련된 모든 요소의 표준화가 필요하다. Clinical and Laboratory Standards Institute (CLSI)는 1968년에 표준화를 하는 데에 모두가 동의할 수 있는 공식적인 절차를 마련하기 위해 만들어졌고, 현재까지 임상검사실, 연구용 검사실을 포함한 많은 종류의 검사실 전 분야에 대해서 표준과 지침을 출판하여, 전 세계의 많은 검사실들이 표준화를 위해 이를 이용하고 있다. CLSI의 항생제 감수성 검사 소위원회(AST SC)는 6개의 상설 부서와 필요에 따라 만들어지는 많은 특설 부서로 구성되어 있다. AST SC의 구성원들은 소위원회에 제안된 내용을 검토하여 연 2차례 열리는 회의에서 제안 내용을 반영할지 여부를 결정함으로써 문서의 개정이 이루어진다. 이 회의는 등록한 사람은 누구나 참여할 수 있으므로, 우리 학회원들도 회의에 참여하여 표준 혹은 지침 문서의 생산에 능동적인 역할을 하기를 기대한다.

• 한국수학교육학회지시리즈E:수학교육논문집
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• 제35권3호
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• pp.257-275
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• 2021

본 연구는 예비교사가 변수와 관련된 학생의 사고를 어떻게 파악하고 대응하는지를 조사하는 것을 목적으로 하였다. 변수와 관련된 학생들의 사고를 추론하여 그에 따른 지도방안을 제시해 보게 하는 문항에서 예비교사의 주목하기와 해석하기의 특징을 동시에 살펴보았으며 주목하기와 해석하기에 따라 예비교사의 대응하기가 어떻게 제안되었는지 그 특징을 조사하였다. 예비교사 26명의 응답을 분석한 결과, 예비교사들이 학생들의 응답에서 나타나는 변수에 대한 오개념에 주목하기가 쉽지 않음을 보여주었으며, 주목은 하였으나 적절한 해석을 해내지 못한 경우를 확인할 수 있었다. 주목하지 못하고 해석하지 못한 대부분 예비교사는 변수에 대한 전반적인 이해의 부족으로 인해 적절한 대응을 제시하지 못한 것으로 나타났으며, 주목하기와 해석하기가 성공적으로 이루어졌다 하더라도 경험적 지식의 부족으로 인해 적절한 대응을 제시하지 못하였다. 연구 결과를 바탕으로, 예비교사 교육에 주는 시사점을 논의하였다.

• 가정과삶의질연구
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• 제16권3호
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• pp.53-66
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• 1998

This study presents the Family FIRO model for stepfamily development. The Family FIRO model conceptualizes interactional patterns in stepfamily for dealing with developmental tasks and suggests a method for organizing assessment and for prioritizing treatment strategies. Boundary ambiguity role confusion intergenerational coalition and loyalty conflict lack of relationship commitment and resource management issues of stepfamily constitute the inclusion interaction dimension in The Family FIRO model. While power role negotiation conflict decision making and discipline issues represent the control interaction dimension lack of emotional exchange and open self-disclosure issues are intimacy interaction dimension in the stepfamily. The family FIRO model suggests that stepfamily should attend to the developmental tasks related to inclusion before placing a major emphasis on control issues which in turn should come before emphasis on stepfamily intimacy.

• 디지털산업정보학회논문지
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• 제11권2호
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• pp.23-35
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• 2015

When people stands near someone's mobile device, it can easily be seen by others. To rephrase this, attackers use human psychology to earn personal information or credit information or other. People are exposed by social engineering attacks. It is certain that we need more than just recommendation for the security to avoid social engineering attacks. This is why I proposed this paper. In this paper, I proposed an authentication technique using NFC and Hash function to stand against social engineering attack. Proposed technique result is showing that it could prevent shoulder surfing, touch event information, spyware attack using screen capture and smudge attack which relies on detecting the oily smudges left behind by user's fingers. Besides smart phone, IPad, Galaxy tab, Galaxy note and more mobile devices has released and releasing. And also, these mobile devices usage rate is increasing widely. We need to attend these matters and study in depth.

• 한국간호교육학회지
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• 제23권2호
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• pp.156-164
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• 2017

Purpose: This study was conducted to identify the factors influencing health promotion behaviors. Methods: The subjects were 200 students sampled from the population that attend four universities in G and J city. Data were collected with a questionnaire and were analyzed by t-test, ANOVA, correlation, and stepwise multiple regression. Results: The mean age of subjects was 21. Family function and self-efficacy were identified as determinants of health promotion behaviors, which explained 53% of the total variances of health promotion behavior. Conclusion: The findings provide evidence to help health assessment and activity related to the health promotion behavior of university students.

• 아동학회지
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• 제30권6호
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• pp.237-248
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• 2009

The reasons to attend Alternative Schools are : to compensate for the discontent over what is locally taught in state schools and to improve the students' satisfaction and social emotional development. In 2006, it was estimated that about a thousand Home Schools were set up. With the studies of Alternative Education and Home Schooling, the issues are : 1) the depth study of curriculum of Alternative Education with a wide range of subjects, 2) the institutionalization of Home Schooling, 3) educational methods for Home Schooling, 4) a research on Home Schooling's effectiveness. Their practical and political issues are : 1) to give the licence to the rest of schools and to formulate Education Law on Home Schooling, 2) to obtain government's financial support to the both sections, 3) to support a system of instructional contents and methods of Home Schooling, and 4) to select, share and popularize the best practices of Home Schooling.