• The Journal of the Convergence on Culture Technology
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• v.9 no.3
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• pp.385-390
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• 2023

The purpose of this study is to identify the antecedents and consequences of perceived fairness of assessment in an online class, such as Google classroom. Based on an extensive literature review, a research model and research questions were designed. We found that the perceived interactivity of contents and social presence were found to be antecedents of perceived fairness of assessment. Further, perceived fairness of assessment was found to have a substantial influence on class satisfaction and achievement.

• Communications of Mathematical Education
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• v.19 no.1 s.21
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• pp.69-100
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• 2005

이 연구는 내신성적이 우수함에도 불구하고 수능성적이 저조한 학생들이 문제 해결과정에서 나타내는 특성과 수학불안 요인을 분석하는데 있다. 연구의 대상은 인천시 5고등학교 자연계열 2학년 학생 중 내신성적이 상위 10%안에 드나 수능성적(모의수능성적)은 그렇지 못한 학생 5명이고, 이들의 수학적 성향, 수학 성취도, 개인별 특성 등에 대한 사전 면담자료, 문제풀이과정에 대한 사후 심층면담자료, 현장노트, 수학불안검사를 바탕으로 그들의 특성과 수학불안 요인을 분석한 결과는 다음과 같다. (1) 내신성적은 좋으나 수능성적이 저조한 학생들의 수학 문제 해결 과정에서 나타나는 특성은 수학전 영역에서의 개념부족, 공식암기 부족 등으로 인하여 문제풀이계획을 세우지 못하거나 설사 문제를 푼다고 해도 계산 실수, 착각, 부주의 등으로 인해 정확한 답을 구하지 못하는 것으로 나타났다. (2) 내신성적은 좋으나 수능성적이 저조한 학생들은 어느 정도의 수학 불안은 가지고 있었다. 불안의 요인은 개념부족, 응용력 부족 등 개인적 인지능력에 의한 저조한 수학 성취수준과 수학 공부시간 부족, 풀이시간 부족 등의 환경적 요인에 때문인 것으로 밝혀졌다. 특히 수학개념이 부족한 학생일수록 수학불안 현상이 심하게 나타났다. 따라서 이들 학생들의 수학 문제풀이 과정 중에 나타나는 계산 실수, 부주의, 착각은 그들의 수학 자신감에 많은 악영향을 미치게 되므로, 교사가 이를 그냥 방관할 것이 아니라 적극적으로 확인하고 지도해줄 필요가 있다. 또 교실 수업에서도 수능시험에서 다루고 있는 수학 내적, 외적 문제해결문제, 추론문제, 응용문제, 통합문제에 대한 문제풀이 경험을 하게하여 수학불안을 해소해줄 필요가 있다.)값을 보였으나, 10,000Hz의 높은 측정주파수에서는 더 큰 $E_a$값을 나타냄으로서 반응온도변화에 민감함을 보여주었다.원으로부터 부유물을 증가로 사료되었으며, 이에 대한 대책마련이 시급한 것으로 사료되었다. 수질이 휴양용수로서 사용하는 데에 적합하도록 충분한 차집시설과 환경 기초시설의 설치 운영이 필요할 것으로 판단된다.TEX>$K_s$값이 높고 $V_m/K_s$비율은 낮아 수게에서 질소가 저농도 일 때에는 다른 미세조류와 비교하면 경쟁력이 떨어지고 질소에 대한 기질 친화력은 약한 것으로 나타났다. 낙동강 하류지역에서 M. aeruginosa가 대발생하는 시기에 수중 영양염의 농도 변동은 M. aeruginosa의 영양생리 kinetics 특성과 잘 부합하는 것으로 나타났다.부분을 보완하기 위한 연구가 이루어져야 할 것으로 보인다. 연마방법 간에 상호 연관성이 없었다. FE-SEM관찰에서 레진전색제를 적용한 후의 표면은 모든 군에서 대체적으로 평활한 표면을 나타내었다. 4. 동일한 복합레진과 연마방법으로 처리된 군에서 레진전색제 적용 전과 후의 표면조도 값은 M1B군이 M1군보다, S1B군이 S1군보다 통계학적으로 높게 나타났으며, M4B군과 M5B군은 각각 M4군과 M5군 보다. 그리고 S5B군은 S5군 보다 통계학적으로 낮게 나타났다 (p<0.05). 본 연구를 종합하여 보면, 복합레진의 종류에 따라 표면조도의 순서는 다르게 나타났고, polyester strip 하에서 복합레진이 중합된 경우 가장 낮은 표면조도 값과 평활한 표면을 제공하였으며 전반적으로 anishing bur는 가장 높은 Ra값과 거친 표면을 제공하였다.

• Korean Journal of Agricultural Science
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• v.4 no.2
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• pp.146-156
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• 1977

To obtain some results of the rate of abnormal keton body in urin of dairy animals by age calving rate, milk yield and some feeding and management condition, 104 cows and 107 dairy goats were investigated. And the results obtained were summerized as follows. 1. From about 23.1% of cows and 39.3% goats, abonormal condition of keton body in urine dectated. 2. The rate of abnormal keton bodies possession were lower at the age of 1~4 but higher at the age of 4~11. 3. From the calving animals, the highest rate of keton body were detected but the lowest from first and ninths calving animals. 4. The cows than 20kg milking per day and the goats 3~4kg milking were higher but the cows below 10kg milking and the goods 1~2kg milking were lower. 5. Under bad feeding and management condition, the amount keton bodies in urine of animals were increased much.

• Journal of the Korean Data and Information Science Society
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• v.22 no.2
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• pp.297-311
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• 2011

This study is about research into 'National Assessment of Educational Achievement (NAEA)' and 'College Scholastic Ability Test (CSAT)' in 5 metropolitan cities and analysis of the result. The objects of study are the materials of mathematics grade of NAEA from 2003 to 2009 and mathematics items of CSAT from 1994 to 2010. The contents of the study are followings. First, the trends of mathematics score of NAEA in elementary, middle and high school is analyzed according to gender, establishment type and the type of school. Second, the trends of CSAT is analyzed according to gender and line (cultural science line or natural science line). Also the trends of application number for cultural science line and natural science line. Third, the trends of the achievement test score of 6th grade in elementary school, third grade in middle school, first grade in high school and the CSAT score in third grade in high school for the same group is considered.

• Journal of the korean academy of Pediatric Dentistry
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• v.27 no.1
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• pp.24-31
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• 2000

The purpose of study was to compare the laser fluorescence detection by Diagnodent(KaVo, Germany), visual inspection using dental explorers, and conventional dental radiography as diagnostic tests for dental caries. One hundred and three human premolars and molars which had no caries or fissure caries were tested by the three methods. Diagnodent scores increased as the scores of the other two tests increased(P<0.01) There were significant relationships between visual inspection scores and Diagnodent scores(Pearson 0.676, Spearman 0.694) and between radiography scores and Diagnodent scores(Pearson 0.623, Spearman 0.658) (P<0.01, all). Diagnodent test proved to have high sensitivity and low specificity and more studies are necessary to present the diagnostic criteria for progressive caries stages.

• The Journal of the Korea Contents Association
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• v.14 no.3
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• pp.490-499
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• 2014

This research was conducted to verify the moderating effect of gender, which impacts learning strategy, negative emotions, and influence that university life adjustment of undergraduates has on academic achievement. Therefore, this survey was conducted on learning strategy and negative emotion in February, targeting 654 freshmen of a university in Seoul on their academic and social adaptation and grades which has been measured and analyzed three months later at the end of the term. The moderating effect according to genders was analyzed through hierarchical regression analyses, and diagram was presented after conducting the simple gradient verification as a post analysis on interactive effect. As a result of analysis, although learning strategy and academic adaptation was appeared to be significantly affecting grades regardless of gender, the impact of negative emotions on academic achievement were significant only to females, and the impact of social adaptation on academic achievement was significant only to males, which enabled the researchers to confirm the regulation effects on different genders. The implications and proposal for a follow-up study about learning strategy, emotion, and adaptation based on the research resulted in the discussion of academic achievement in university.

• Journal of Embryo Transfer
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• v.9 no.1
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• pp.53-63
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• 1994

소 체외수정란의 체외 발육에 $CO_2$와 $O_2$의 농도가 미치는 영향에 대하여 두가지 배양액과 서로 다른 Co-culture 체계를 이용하여 검토하였다. 체외 수정후 40~44시간에 회수간 2~8 세포기 수정란을 여러가지 gas조건하의 다른 배양조건에서 무작위로 옮겨 실험을 수행하였다. 5% $CO_2$와 $O_2$,10% $O_2$및 20% $O_2$조건에서 배양을 실시한 결과, 상실배가 이상 발육된 체외 발육성적은 각각 22.1% 15.0% 및 21.1%였다.(p<0.05). 한편 배양액에 따른 헤외 배양성적은 KOSM배양액(19.1%)의 경우가 Menezo's B2 배양액(13.7%)에서 배양한 경우보다 더 높은 성적을 얻었다.(p>0.05,Table 1). 2~8세포기 수정란을 5% $CO_2$또는 10% $CO_2$와 5%, 10% 및 20%의 $O_2$조건 하에서 체외 배양을 실시한 경우 각각 15% 와 8%의 체외 발육 성적을 얻었고(P>0.05), $O_2$조건의 경우 10% $O_2$(17%)와 20% $O_2$(20%)의 배양조건을 이 5% $O_2$(26%)보다 낮은 성적을 나타냈다. (P<0.05), (Table2). 체외 수정 후 얻은 2~8세포기 수정란을 단순 배양액 과 두개의 다른 공동 배양체계를 이용하여 5% $CO_2$와 5% 및 20% $O_2$의 배양 조건하에서 체외 배양을 실시한 결과 상실배와 배반포기 까지 발육된 체외 발육 성적은 배양액과 공동배양 체계에 따른 차이는 인정되지 않았다(p>0.05). 그러나 $O_2$의 농도는 소 체외 수정란의 체외 발육성적에 영향을 미치는 것으로 나타났다.(Table 3). 본실험은 $CO_2$와 $O_2$의 농도가 소 체외수정란의 체외 배양할때 배양체계에 따라 다른 영향을 미치는 것으로 나타났다.

• Health Policy and Management
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• v.34 no.2
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• pp.129-140
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• 2024

Background: The mental health issues caused by trauma can manifest differently depending on the characteristics of the traumatic event. Particularly, individuals who have experienced sexual trauma are known to have more negative mental health outcomes compared to those who have experienced non-sexual trauma. The mental health issues of individuals who have experienced sexual trauma are severe, and new forms of threats, such as digital sexual crimes, are emerging. This study aimed to investigate whether the type of traumatic event, particularly focusing on sexual trauma events, contributes to differences in mental health outcomes and to identify factors influencing suicidal ideation and potential post-traumatic stress disorder (PTSD) risk. Methods: Based on an online survey conducted nationwide among adults aged 20 to 50, participants were categorized based on the type of trauma they experienced (sexual trauma events and non-sexual trauma events). The study conducted propensity score matching (PSM) using demographic factors (sex, age group, subjective economic status, and marital status) and resilience protective factors (cognition of recoverability, social support, and protection experiences in childhood) as control variables, excluding the experience of sexual trauma events, to investigate their potential impact on mental health (suicidal ideation and potential PTSD risk). Subsequently, binary logistic regression analysis was conducted to identify factors influencing mental health. Results: Even after PSM, individuals who experienced sexual trauma exhibited more negative outcomes in terms of suicidal ideation and potential PTSD risk compared to those who experienced non-sexual trauma. The results of binary logistic regression analysis showed that sexual trauma survivors were 1.9 times more likely to have suicidal thoughts (odds ratio [OR], 1.911) and 2.5 times more likely to have a potential PTSD risk (OR, 2.472). Furthermore, as resilience protective factors became more negative, the likelihood of suicidal ideation and potential PTSD risk increased. Conclusion: This study emphasizes the importance of understanding and supporting individuals who have experienced sexual trauma, highlighting the necessity for strategies aimed at mitigating suicidal ideation and potential PTSD risk among sexual trauma survivors, while also facilitating recovery through the promotion of resilience protective factors.

• Proceedings of the Korea Society of Design Studies Conference
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• 1998.04a
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• pp.42-43
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• 1998

• Proceedings of the Korea Society of Design Studies Conference
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• 2003.11a
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• pp.144-145
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• 2003