• 간호행정학회지
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• 제10권1호
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• pp.1-9
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• 2004

Korean health insurance has adopted preliminary DRG payment system through 8 DRGs from 1997. But present DRG payment system gives economic incentives for hospitals to hire less nurse. This study was attempted to develope DRG adjust index to differentiate DRG price by nurse staffing level for nursing care quality. Method: We analyzed inpatient care cost by medical institute and developed DRG adjust index to differentiate DRG price by nurse staffing level. Results: Among same medical institute, inpatient care cost are very different according to hospital's nurse staffing level. In the case of casarean section, inpatient care cost of the 1st grade general hospital are more expensive 85,732won than the 6th grade hospital. The cost difference are 8.24% of total casarean section DRG price and 16.48% of DTG variable price. We developed DRG adjust index-a to apply DRG variable price and index-b to apply DRG total price for compensation cost difference of hospitals. Conclusions: DRG price adjust index will give economic incentive for hospitals to hire more nurse and improve nursing care quality.

• 한국인터넷방송통신학회논문지
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• 제21권4호
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• pp.177-182
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• 2021

다양한 원재료를 혼합하여 원하는 성분 함유량을 가진 제품을 최소의 비용으로 생산하는 혼합 최적화 문제에 대해 일반적으로 O(n⁴)의 수행 복잡도의 선형계획법을 적용하고 있다. 본 논문에서는 이 문제에 대해 O(n log n)복잡도로 해를 얻을 수 있는 휴리스틱 알고리즘을 제안한다. 제안된 알고리즘은 합금 강판에서 요구하는 성분들의 함유량 범위를 충족시키면서 최소의 원자재비용을 얻기 위해, 원재료 단가 오름차순으로 성분별 함유량을 충족시키도록 원재료 양을 결정하였다. 3가지 사례에 대해 적용한 결과 제안된 알고리즘은 O(n log n)복잡도로 단순한 결정기법을 적용하였음에도 불구하고, LP의 최적화 기법과 동일하거나 보다 좋은 해를 얻을 수 있었다.

• 자동차안전학회지
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• 제12권2호
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• pp.14-20
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• 2020

This paper presents a vehicle mass and road grade estimator for developing an automated bus. To consider the dynamic characteristics of a bus varying with the number of passengers, the longitudinal controller needs the estimation of the vehicle's mass and road grade in real-time and utilizes the information to adjust the control gains. Discrete Kalman filter is applied to estimate the time-varying road grade, and the recursive least squares algorithm is adopted to account for the constant mass estimation. After being implemented in MATLAB/Simulink, the estimators are evaluated with the dynamic model and experimental data of the target bus. The proposed estimators will be applied to complement the algorithm of the longitudinal controller and proceed with algorithm verification.

• 한국수학교육학회지시리즈A:수학교육
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• 제47권1호
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• pp.91-106
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• 2008

Interviews with 24 pupils in grade 1-2 were used to investigate awareness of the relation between situation and computation in simple quotitive and partitive division problems as informally experienced. Then it was suggested how to connect children's informal knowledge and formal knowledge of division. Most subjects counted cubes or made drawing, and related these methods to the situation described in the problems. In result, quotitive division was experienced as a dealing situation, where the number of items represented by the divisor was repeatedly taken from the whole number. And estimate-adjust was the most frequently displayed way of experiencing partitive division. Therefore, partitive division with its two measurement variables can be related to a measurement model. And children should be taught column algorithms for division with estimated-adjust which pupils used for partitive division problems.

• 한국학교보건학회지
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• 제26권1호
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• pp.34-44
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• 2013

Purpose: The purpose of this study is to identify the relationship between school adjustment and stress-coping styles among adolescents. Methods: This is a descriptive correlation survey using a convenience sample of 701 middle school students in Seoul, Gyeonggi, Incheon, Jeonbuk, and Gangwon province, Korea. The study's questionnaire included a scale of school adjustment and a scale of stress-coping style. The data analysis, using the SPSS 19.0 program, involved frequency, the mean and standard deviation, the t-test, ANOVA, the scheffe test, and the Pearson correlation coefficient. Results: Positive correlations were identified between positive stress-coping styles and the adjustment to school life of adolescents. The degree of school adjustment varied significantly according to the region, grade, attending private educational institutes after school or not, academic performance, daily study hours after school, and the hours students spend on gaming and Internet use a day. With regard to the behaviors to cope with stress, teenagers with a higher sense of life-satisfaction tended to show active coping behaviors, and female students were more likely to show positive or negative coping behaviors than mystic coping behaviors. Since adolescents' stress-coping styles showed connection with their adjustment to school, it is necessary to develop stress management programs to help middle school students adjust to school life. Conclusion: Based on the study's findings, it is important to develop programs which can help students adjust to school and learn how to cope with stress positively.

• 한국축산식품학회지
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• 제43권1호
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• pp.113-123
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• 2023

This study investigated the predictability of cooking loss of pork loin through relatively easy and quick measurable quality properties. The pH, color, moisture, protein content, and cooking loss of 100 pork loins were measured. The explanatory variables included in all linear regression models with an adjust-r² value of ≥0.5 were pH and the protein content. In the linear regression model predicting cooking loss, the highest adjust-r² value was 0.7, with pH, CIE L^*, CIE b^*, moisture, and protein content as the explanatory variables. In 30 pork loins, electrical conductivity was additionally measured, and as a result of linear regression analysis for predicting cooking loss, the highest adjust-r² value was 0.646 with electrical conductivity measured at 40 Hz, with pH and color as the explanatory variables. Ordinal logistic regression analysis was performed to predict the three grades (low, middle, and high) of loin cooking loss using pH, color, and 40 Hz electrical conductivity as the explanatory variables, and the percent concordance was 93.8%. In conclusion, the addition of electrical conductivity as an explanatory variable did not increase the prediction accuracy of the linear regression model for predicting cooking loss; however, it was demonstrated that it is possible to predict and classify the cooking loss grade of pork loin through quality properties that can be measured quickly and easily.

• 한국환경교육학회지:환경교육
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• 제22권1호
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• pp.68-82
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• 2009

Global climate change is associated with all of the human activity, and its sudden change can be taken an issue of the serious environmental problem in our human society. The purpose of this study is to develope the goal and the content system for the climate change education. As a result, first, according to the questionnaires on climate change, students from Grade 3 to Grade 10 seem to interpret it as fragmentary perspectives. In addition, in terms of students' own actions as the corresponding strategy to climate change, the higher their grades were, the lower their actions were. Second, the development goal on climate change and its educational directions were set by reflecting students' perception. The education goal on climate change is to perceive the changing environment by understanding phenomena of climate change, to propose plans that can mitigate and adjust climate change through a variety of research, and to keep practicing the proposed plans as a member of a community for the global environment. Third, fields and items of educational contents to climate change were created and drawn out. The content system is composed of 'basic science of climate change', 'relationship with climate change', and 'coping with climate change'. Furthermore, concrete contents for the climate change education in elementary school were suggested so that its goal and content system can be used in the existing curriculum.

• 한국초등수학교육학회지
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• 제19권3호
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• pp.289-304
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• 2015

본 연구는 2009 개정 교육과정에 따른 현재의 초등 수학 교과서가 개발 당시에 기대했던 점들과 지금까지 수학 교과서에 제기되었던 주요 문제점들이 수업을 진행한 교사들의 입장에서, 얼마나 개선되었는지에 대하여 스토리텔링, 흥미도와 자신감, 수학적 과정, 학습 내용의 양과 적절성, 평가, 수학의 유용성과 외형의 7개 부문의 20개 문항으로 나누어 설문 조사를 하였다. 그 결과, 교사들의 전체적인 경향은 긍정적이었다. 구체적으로 외형, 스토리텔링, 수학 유용성은 상당히 긍정적이었고, 수학적 과정, 학습내용의 양과 적절성 부문은 긍정적이었다. 그러나 흥미도와 자신감 그리고 스스로 학습하기 부문은 큰 변화가 없어 그 원인 파악이 필요해 보였다. 이러한 연구 결과가 앞으로 새로운 수학과 교육과정에 따라 교과서 개발과정에서 개발방향이나 활용에 대한 효과의 제고를 위해 의미 있는 자료로 활용되기를 기대한다.

• 한국초등수학교육학회지
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• 제19권2호
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• pp.179-203
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• 2015

본 연구는 유치원 교육과정과 초등학교 수학과 교육과정의 개발에서 두 교육과정을 연계시키는데 도움을 줄 수 있는 시사점을 찾고자, 5세 누리과정과 이에 따른 교사용 지도서의 수학 지도 내용, 그리고 현행 초등학교 1학년 수학과 교육과정 및 그에 따른 교과서의 지도 내용 사이의 연계성을 분석한 것이다. 그 결과 다음의 여섯 가지 시사점을 얻을 수 있었다. 첫째, 도형 영역의'공간적 관계'나 확률과 통계 영역의 '자료 수집'과 같이, 5세 누리과정에서 완성되고 있는 내용을 1학년 교육과정과 연계시킬 필요가 있다. 둘째, 5세 누리과정과 1학년 교육과정이 연계되지는 않지만, 2~6학년 교육과정이 연계되는 경우, 어느 한 교육과정을 기준으로 위계를 재조정할 필요가 있다. 셋째, $\ll$K-지도서$\gg$가 5세 누리과정을 준수하고 있는 지 검토할 필요가 있다. 넷째, $\ll$K-지도서$\gg$의 각 [활동]에서 5세 누리과정 관련 요소와 초등학교 교육과정 관련을 재검토할 필요가 있다. 다섯째, $\ll$K-지도서$\gg$의 각 [활동]에서 수학 지도 내용을 명시적이고 체계적으로 취급할 필요가 있다. 여섯째, 교육과정 개발에서 유아수학교육 전문가와 초등수학교육 전문가 사이의 협업 체제가 마련될 필요가 있다.

• Journal of Preventive Medicine and Public Health
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• 제45권4호
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• pp.211-218
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• 2012

Objectives: The objective of this study was to identify the differences in obesity rates among people with and without disabilities, and evaluate the relationship between obesity rates and the existence of disabilities or characteristics of disabilities. Methods: Mass screening data from 2008 from the National Disability Registry and National Health Insurance (NHI) are used. For analysis, we classified physical disability into three subtypes: upper limb disability, lower limb disability, and spinal cord injury. For a control group, we extracted people without disabilities by each subtype. To adjust for the participation rate in the NHI mass screening, we calculated and adopted the weight stratified by sex, age, and grade of disability. Differences in obesity rates between people with and without disabilities were examined by a chi-squared test. In addition, the effect of the existence of disabilities and grade of disabilities on obesity was examined by multiple logistic regression analysis. Results: People with disabilities were found to have a higher obesity rate than those without disabilities. The obesity rates were 35.2% and 35.0% (people with disabilities vs. without disabilities) in the upper limb disability, 44.5% and 34.8% in the lower limb disability, 43.4% and 34.6% in the spinal cord injury. The odds for existence of physical disability and grade of disability are higher than the nondisabilities. Conclusions: These results show that people with physical disability have a higher vulnerability to obesity.