초등학교 6학년의 분수와 소수의 크기에 대한 수직선 표상의 정확성 및 사용 전략 분석

허진영,임수현 한국수학교육학회 2024 수학교육 Vol.63 No.3

분수와 소수가 나타내는 크기에 대한 이해를 돕기 위해, 수의 크기를 공간상에 직관적으로 표시하는 수직선 모델이 널리 활용된다. 본 연구에서는 수직선 추정 과제를 활용하여 초등학교 6학년 학생들의 분수와 소수에 대한 이해도 및 문제 해결 전략을 살펴보고, 다양한 전략 사용의 유연성이 분수와 소수의 표상의 정확성, 연산 능력, 수학 학업성취도의 개인차와 연관성이 있는지를 분석하였다. 분석 결과, 학생들은 자연수에 비해 분수와 소수의 수직선 표상 정확성이 상대적으로 낮았으며, 특별히 분수의 경우 분모가 짝수인 분수보다 홀수인 분수에서, 소수의 경우 소수 세 자리 수 보다 소수 두 자리 수에서 수직선표상의 정확성이 더 낮게 나타났다. 전략 사용의 측면에서 학생들은 분수를 수직선에 표상할 때 기준점 참고 전략, 분할 전략, 어림 전략 순으로 많이 사용하였으며, 소수를 표상할 때에는 기준점 참고 전략, 반올림 전략, 자연수 변환 전략 순으로많이 사용하였다. 마지막으로 분수를 표상할 때 사용하는 전략이 다양할수록 분수의 표상 정확성과 수학 학업성취 점수가높게 나타났다. 이러한 결과를 토대로 분수의 다양한 개념과 자연수 대비 소수의 자릿값 및 0의 개념에 대한 세심한 지도의필요성을 제언하였다. 또한 분수와 소수에 대한 이해를 돕기 위한 방안으로, 수직선 모델 활용과 함께 표상 전략을 병행해서지도하는 방법에 대해 논의하였다. The number line model, which intuitively marks numerical magnitudes in space, is widely utilized to help in understanding the magnitudes that fractions and decimals represent. The study analyzed 6th graders’ understanding of fractions and decimals, their problem solving strategies, and whether individual differences in the flexibility of various strategy uses are associated with the accuracy of numerical representation, calculation fluency, and overall mathematical achievement. As a result of the study, students showed relatively lower accuracy in representing fractions and decimals on a number line compared to natural numbers, especially for fractions with odd denominators compared to even denominators, and for two-digit decimals compared to three-digit decimals. Regarding strategy use, students primarily used benchmark, segmentation, and approximation strategies for fractions, and benchmark, rounding, and transformation strategies for decimals sequentially. Lastly, as students used various representation strategies for fractions, their accuracy in representing fractions and their overall mathematical achievement scores showed significantly better outcomes. Taken together, we suggest the need for careful instruction on different interpretations of fractions, the place value of decimals, and the meaning of zero in decimal places. Moreover, we discuss instructional methods that integrate the number line model and its diverse representation strategies to enhance students’ understanding of fractions and decimals.

체육수업 분위기와 자기효능감이 학생들의 도움요청 행동에 미치는 영향

허진영(Jin Young Huh) 한국체육교육학회 2011 한국체육교육학회지 Vol.16 No.3

이 연구의 목적은 체육수업 분위기와 자기효능감, 도움요청 행동의 관계를 분석하는데 그 목적이 있다. 이러한 목적을 달성하기 위해 서울과 경기도에 재학하고 있는 학생을 모집단으로 설정하였으며, 편의표본 추출법으로 320명을 선정하였다. 자료처리는 SPSS 14.0을 이용하여 요인분석과 다중회귀분석을 실시하여, 다음과 같은 결과를 도출하였다. 첫째, 체육수업 분위기가 자기효능감에 미치는 영향을 분석한 결과, 체육수업 분위기의 하위요인 중 교사학습 지향행동 분위기와 학생들의 실패걱정 분위기는 자기효능감(자신감)에 통계적으로 유의한 영향을 미쳤다. 둘째, 자기효능감의 하위요인 중 자신감과 과제난이도 선호요인이 도움요청 행동에 유의한 영향을 미치는 것으로 나타났으나, 자기조절 효능감은 유의한 영향을 미치지 않았다. 셋째, 체육수업 분위기의 하위요인 중 학생 학습지향 행동, 노력 없는 결과지향, 학생들의 시패걱정, 경쟁 지향성 분위기가 도움요청 행동에 유의한 영향을 미치는 것으로 나타났다. The purpose of this study was to identify effects of P.E class atmosphere and self-efficacy on help-seeking behavior. To obtain the purpose, 303 high school students from Seoul and Gyeonggido`s area answered the questionnaire using convenient sampling method. Data which is obtained through self-administration was analyzed using by the factor analysis, multiple regression. Results are as follows: 1. teacher`s learning-oriented behavior and student`s fear failure of physical education atmosphere have significantly influenced on self-efficacy. 2. self-efficacy has significantly influenced on help-seeking behavior. Self-confidence and task difficulty preference have influenced on help-seeking factors except self-control asking factor. 3. physical education atmosphere has significantly influenced on help-seeing behavior, such as students learning oriented behavior, fear of failure, and outcome oriented behavior. Overall results indicated that preference behaviors and requests of students are needed to be identify for improving class quality through voluntary help-seeking behavior.

목표-지향적 조준 과제시 연령증가에 따른 동작계획의 뇌반구 지배 효과

허진영(Huh Jin-Young) 한국체육과학회 2006 한국체육과학회지 Vol.15 No.3

The purpose of the present research was to investigate the effects of contrlateral hemisphere dominace for movement planning in goal-directed aiming task with age. A total of 20 individuals(10.5years and 20years+) were randomly assigned to experiment. Following 5) practice trials with maximal velocity for RT screening, subjects were performed 3 different goal-directed aiming tasks(ipsilateral, center, and contralateral) with biomechanical constraint. Results are as follows. First, young children showed slower RT and MT with more performance errors compared to adults. Second, generally ipsilateral movments and left hand advantages are interpreted using the classical model of interhemispheric transformation for simple visuo motor integration. Results suggested that biomechanical constrains could not effect for movement execution but for movement coding.

적정 요약 수행지식 제공이 정신지체인의 골프퍼팅 학습에 미치는 영향

허진영 한국특수체육학회 2003 한국특수체육학회지 Vol.11 No.1

The purpose of this study was to identify effects of summary KP in person with MR on golf putting learning. Total thirty subjects who were in special class at high school participated in the study. The number of summary KP was divided into three types; 3,6,9 times. In experiment 1 subject had an acquisition session for 6 blocks of 9 trials; total 54 trials. Subjects who were in experiment 2 had 3 days acquisition session for 6 blocks of 9 trials (total 162 trials). Results were as followes: First, there were significantly difference in putting task according to types of summary KP. Second, results indicated that many summary KP was more effective in golf putting retention test of person with MR. Third, many summary KP was more effective in golf putting transfer test of person with MR.

Ceftizoxime 투약 후 면역용혈빈혈 및 다발장기부전

허진영 ( Jin-young Huh ),안아리 ( Ari Ahn ),김형석 ( Hyungsuk Kim ),권석운 ( Seog-woon Kwon ),안수종 ( Sujong An ),이재용 ( Jae Yong Lee ),권병수 ( Byoung Soo Kwon ),오은혜 ( Eun Hye Oh ),박도현 ( Do Hyun Park ),허진원 ( Jin Won H 영남대학교 의과대학 2017 Yeungnam University Journal of Medicine Vol.34 No.1

Drug-induced immune hemolytic anemia (DIIHA) is a rare side effect of drugs. DIIHA may cause a systemic inflammatory response that results in acute multi-organ failure and death. Ceftizoxime belongs to the class of third generation cephalosporins, which are the most common drugs associated with DIIHA. Herein, we present a case of a 66-year-old man who developed fatal DIIHA after receiving a second dose of ceftizoxime. He was admitted to receive photodynamic therapy. He had a history of a single parenteral dose of ceftizoxime 3 months prior to admission. On the day of the procedure ― shortly after the infusion of ceftizoxime ― the patient`s mental status was altered. The blood test results revealed hemolysis. Oliguric acute kidney injury developed, and continuous renal replacement therapy had to be applied. On the suspicion of DIIHA, the patient underwent plasmapheresis. Diagnosis was confirmed by a detection of drug-dependent antibody with immune complex formation. Although his hemolysis improved, his liver failure did not improve. He was eventually discharged to palliative care, and subsequently died.

Incidence and risk factors associated with progression to severe pneumonia among adults with non-severe Legionella pneumonia

허진영,Choi Sang-Ho,조경욱,허진원,홍상범,심태선,임채만,고윤석 대한중환자의학회 2022 Acute and Critical Care Vol.37 No.4

Background: Legionella species are important causative organisms of severe pneumonia. However, data are limited on predictors of progression to severe Legionella pneumonia (LP). Therefore, the risk factors for LP progression from non-severe to the severe form were investigated in the present study.Methods: This was a retrospective cohort study that included adult LP patients admitted to a 2,700-bed referral center between January 2005 and December 2019. Results: A total of 155 patients were identified during the study period; 58 patients (37.4%) initially presented with severe pneumonia and 97 (62.6%) patients with non-severe pneumonia. Among the 97 patients, 28 (28.9%) developed severe pneumonia during hospitalization and 69 patients (71.1%) recovered without progression to severe pneumonia. Multivariate logistic regression analysis showed platelet count ≤150,000/mm3 (odds ratio [OR], 2.92; 95% confidence interval [CI], 1.10–8.11; P=0.034) and delayed antibiotic treatment >1 day (OR, 3.09; 95% CI, 1.17–8.73; P=0.026) were significant independent factors associated with progression to severe pneumonia. Conclusions: A low platelet count and delayed antibiotic treatment were significantly associated with the progression of non-severe LP to severe LP.

운동참여 및 내외통제성에 따른 노인의 스트레스 지각정도

허진영(Huh Jin-Young),임현묵(Lim Hyun-Mook) 한국체육과학회 2007 한국체육과학회지 Vol.16 No.3

The purpose of this study was to identify the level of perceived stress according to exercise participation and internal-external locus of control in elderly people. In order to obtain the purpose, first, perceived stress level based on demographical characteristics, second, perceived stress level according to exercise participation and internal-external locus of control, and third, the relationship between stress, exercise participation, and internalexternal locus of control were tested. Subjects of this study were recruited from welfare center for the aged in Seoul area. Total 300 elderly people who are over 65 years old were surveyed using the related questionnaire. Data was analysed using frequency analysis, one-way ANOVA, and two-way ANOVA with SPSS win ver. 12.0. Results are as follows. First, there are significant differences in perceived stress level according to economic level, residence type, spouse existence, and living type. Second, there are significant differences in perceived stress level according to exercise participation and internal-external locus of control. Third, the elderly people who are internal locus of control with exercise participation are tend to have more stress for forfeiture factor. The elderly people who are internal locus of control with no exercise participation are tend to have more stress for economic factor.

수영참여자의 지각가치와 참여 동기가 운동지속에 미치는 영향

허진영(Huh Jin-Young),최헌혁(Choi Hun-Hyuk) 한국체육과학회 2008 한국체육과학회지 Vol.17 No.1

The purpose of this study was to investigate to effects of perceived value and participant motivation on swimming adherence. Total of 285 subjects who are from the metropolitan area are participanted in the study. Age of subjects was ranged from 20 to 65 years old. Questionnaire for perceived value, participant motivation and exercise adherence was collected. Data analysis was performed using by frequency analysis, factor analysis, one-way ANOVA, and multiple regression analysis. Results obtained from the study are as follows. First, there was a significant difference in the perceived value for swimming year and income. No difference was found in job for the perceived value. There was a significant difference in income and job for participant motivation and participation adherence. No difference was found swimming yer for participation motivation and adherence. Second, excellence and convenience factor for the perceived value have significantly influenced on participation adherence. Third, participation motivation have significantly influenced on swimming participation adherence.

계획행동 이론을 적용한 모험스포츠 참여의도와 지속행동과의 관계

허진영(Huh Jin-Young),최헌혁(Choi Hun-Hyuk) 한국체육과학회 2008 한국체육과학회지 Vol.17 No.2

The purpose of this study was to explore the relationship between extreme sport participation intention and exercise adherence using the theory of planned behavior. The sample of the study was customers from ski resort in Kangwondo area. Subjects(N=247) were selected from snowboard riders by using the convenience sampling technique. The data were recorded and analyzed using the SPSS 14.0 and AMOS 5.0 statistical computer package to do a exploratory factor analysis. The results from Confirmatory Factor Analysis and Structural Equation Model are follows. First, only subjective criterion and controlled behavior out of psychological factors have influenced on participation intention. Second, participation intention of extreme sport have influenced on the exercise adherence. Third, controlled behavior out of psychological factors have directly influenced on both tendency and reinforcement factors of the exercise adherence.

골프선수의 능력지각수준이 경쟁상태불안과 경기력에 미치는 영향

허진영(Huh Jin-Young),정승우(Chung Seung-Woo) 한국체육과학회 2006 한국체육과학회지 Vol.15 No.4

The purpose of this study was to identify the effect of level of perceived competence on competitive state anxiety and performance in golf player. Survey were performed from 237 student players who are participated in the 5th national junior golf championship that is held in Jeju island Questionnaire for demographical characteristics, level of perceived competence and competitive state anxiety was obtained. Frequency analysis, one-way ANOVA, and multiple regression analysis for data analysis were performed. Results are as follows. First, there was significant difference level of perceived competence, competitive state anxiety, and golf performance according to individual characteristics. Second, the perceived competence of golfer has effect on competitive state anxiety. Third, the level of perceived golf performance of golfer has effect on golf performance. Fourth, the competitive state anxiety of golfer has effect on golf performance. Fifth, there was a casual relationship between level of perceived competence, competitive state anxiety, and golf performance. Results were discussed based on the above.