• Therapeutic Science for Rehabilitation
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• v.12 no.3
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• pp.61-77
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• 2023

Objective : This study analyzed the correlation between cognitive function and oral health-related quality of life (OHQoL). Methods : Demographic and clinical characteristics were extracted and utilized for subjects aged 45 years or older who participated in the 8th Korean Longitudinal Study on Aging in 2020. The dependent variable was the Geriatric Oral Health Assessment Index, and the independent variable was the level of cognitive function classified by the Mini-Mental State Examination scores. The analysis method used inverse probability of treatment weighting (IPTW). Then, the association between cognitive function and OHQoL was analyzed by multiple regression analysis. Results : Among the participants, 4,367 (71.40%) had normal cognition, 1,155 (18.89%) had moderate cognitive impairment, and 594 (9.71%) had severe cognitive impairment. As a result of analysis by applying IPTW, there was a negative correlation between the cognitive function group and OHQoL (normal vs. moderate: β = -2.534, p < .0001; normal vs. severe: β = -2.452, p < .0001). Conclusion : After propensity score matching, mild cognitive impairment showed a more negative association than severe cognitive impairment. Therefore, patients with cognitive impairment require oral health management education to improve OHQoL regardless of the level of cognitive impairment.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.43 no.4
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• pp.485-492
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• 2023

Among the methods to improve traffic congestion by providing real-time traffic information and solving problems like traffic congestion and traffic crashes, private enterprise is implementing policies to lower insurance premiums like compensation for drivers' driving safety scores. Despite the emergence of various incentive policies, a study on the level of incentive payment for safe/eco-friendly driving is insufficient. The research analyzed the satisfactory factors that affect the scale of incentives through questionnaires and the applicable scale of incentives that enable safe/eco-friendly driving using a binary logistic regression model. As a result of analyzing the incentive scale of the appropriate payment amount for each driving score increase, 0.4% of the toll fee was derived when the driving score increased by 20 points, and 0.5% of the toll fee was derived when the driving score increased by 30 points. This study on calculating the appropriate incentive payment scale for driver information sharing and driving score increase will help optimize incentives and prepare system implementation plans.

• Journal of Korea Entertainment Industry Association
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• v.13 no.7
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• pp.397-408
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• 2019

Purpose: The purpose of this study was to examine the effects of team-based learning(TBL) program on problem solving ability, self-directed learning and learning motivation of nursing students in a adult nursing course. Methods: This study was quasi-experimental study by using nonequivalent control group pretest-posttest design. Participants were 132 nursing students consisting of each experiment group 66 and control group 66. The experiment group was provided TBL program for 2 hours per session during 6 sessions and control group was provided lecture. Data were collected by questionnaires from April 20 to June 19, 2018. Data was analyzed by a chi-square test, t-test and ANCOVA using IBM SPSS 21.0 program. Results: The mean scores of problem solving ability(F=9.179, p=.003), self-directed learning(F=7.447, p=.007) and learning motivation(F=7.974, p=.006) were significantly higher in experiment group than those in control group. Conclusion: TBL program in a adult nursing course was effective in problem solving ability, self-directed learning and learning motivation of nursing students.

• The Korean Journal of Applied Statistics
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• v.36 no.5
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• pp.415-445
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• 2023

Oftentimes, the time dependent treatment covariate and the time dependent confounders exist in observation studies. It is an important problem to correctly adjust for the time dependent confounders in the propensity score analysis. Recently, In the survival data, Hade et al. (2020) used a propensity score matching method to correctly estimate the treatment delay effect when the time dependent confounder affects time to the treatment time, where the treatment delay effects is defined to the delay in treatment reception. In this paper, we proposed the Cox model based marginal structural model (Cox-MSM) framework to estimate the treatment delay effect and conducted extensive simulation studies to compare our proposed Cox-MSM with the propensity score matching method proposed by Hade et al. (2020). Our simulation results showed that the Cox-MSM leads to more exact estimate for the treatment delay effect compared with two sequential matching schemes based on propensity scores. Example from study in treatment discontinuation in conjunction with simulated data illustrates the practical advantages of the proposed Cox-MSM.

• Journal of The Korean Association For Science Education
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• v.26 no.2
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• pp.191-199
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• 2006

This study investigated the influence of time to draw students' mental models and students' field dependence-independence on learning the particulate nature of matter with multiple representations. Seventh graders (N=295) at two middle schools were assigned to control, after-drawing, and before-drawing groups. The students learned "Boyle's Law" and "Charles's Law" for two class periods. Results revealed that the scores of a test on conceptual understanding for the two drawing groups were significantly higher than those for the control group. However, there was no significant interaction between the instruction and students' field dependence-independence in the scores of the test on conceptual understanding. In 'novelty' on a situational interest test, field independent students in the two drawing groups scored significantly higher than those in the control group. The scores for field independent students in each group were similar, while field dependent students in the before-drawing group scored lower than those in the control and after-drawing groups in 'attention demand' on the situational interest test. It was found that most students positively perceived after-drawing or before-drawing, but field independent students in the before-drawing group were more apprehensive about the activities than those in the after-drawing group.

• Journal of The Korean Association For Science Education
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• v.27 no.1
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• pp.28-36
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• 2007

This study investigated the influences of small group discussion and students' visual learning style in learning chemical concepts with drawing and writing as methods to assist students in connecting and integrating multiple external representations. Seventh graders (N=449) at a coed middle school were assigned to individual drawing (ID), pair drawing (PD), individual writing (IW), and pair writing (PW) groups. All students learned "Boyle's Law" and "Charles's Law" for two class periods. Analyses of the results revealed that the students in the PD group, regardless of students' visual learning style, scored significantly higher than those in the ID group in a conception test. The scores of the students with strong visual learning preference in the PW group were significantly higher than those in the IW group in the conception test, while the scores of the students with weak visual learning preference were not significantly different between the two groups. Although the conception test scores of the PD group were higher than those of the PW group, the difference was relatively small. It was found that most students in both PD and PW groups perceived pair drawing and pair writing positively upon cognitive and motivational aspects.

• Journal of Nutrition and Health
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• v.57 no.4
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• pp.435-450
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• 2024

Purpose: This study developed the evaluation components and criteria for the Korean Healthy Diet (KHD) and assessed the current compliance of Koreans. Methods: The study reviewed domestic and international dietary guidelines and literature and conducted an online survey of 514 Korean adults to understand their nutritional perceptions, specifically the perceived importance of health and incorporation into usual diet. Data from the Korea National Health and Nutrition Examination Survey (KNHANES) were used to investigate food and nutrient intake patterns and examine the relationship between intake and metabolic syndrome (MetS). Based on these data, the components and criteria for a KHD were established by sex and age, and adherence was assessed. Results: The KHD evaluation included 13 dietary components: carbohydrates, sugar, fiber, protein, total fat, saturated fat, sodium, calcium, mixed grains, meat·fish·eggs·beans, vegetables, fruits, and dairy products. Applying the selected components and criteria to data from the KNHANES (2019-2021), the average KHD adherence score for Korean adults was 5.465 ± 0.023 out of a maximum score of 13. The score significantly increased with age (4.766 ± 0.044 for 19-29 years; 5.276±0.032 for 30-49 years; 6.109 ± 0.033 for 50-64 years), and women (5.642 ± 0.028) had higher scores than men (5.284 ± 0.030) (p < 0.05). Furthermore, the total score significantly differed between those with MetS (5.518 ± 0.045) and those without (5.568 ± 0.026) after adjusted for sex and age (p < 0.05). When scoring the dietary components, sugar (0.852 ± 0.004) and proteins (0.881 ± 0.004) scored relatively higher in the association with MetS, whereas calcium (0.148 ± 0.004) and mixed grains (0.225 ± 0.005) scored relatively lower. Conclusions: The KHD evaluation criteria could be used as a tool for screening and monitoring the overall diet quality of Koreans.

• Proceedings of the Korean Information Science Society Conference
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• 2004.10b
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• pp.292-294
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• 2004

단백질 상호작용 검출 방법의 발달로 많은 양의 데이터가 산출되고 있고, 이러한 상호작용 데이터의 방대한 양으로 인해 통계적 방법을 이용하여 데이터를 처리함으로서 유용한 지식을 얻을 수 있다 예측한 상호작용 데이터는 첫째, 대량의 데이터를 생산해내므로, 많은 false-positive를 내포하고 있고, 둘째, 예측한 상호작용을 검증시 실험을 하는 방법 외에는 신뢰도를 측정하기가 어렵다는 문제점이 있다. 본 연구에서는 점수 할당시스템을 사용함으로서 예측한 인간 단백질 상호작용 데이터의 false-positive를 줄이고, 각각 상호작용에 점수를 부설함으로서 상호작용 데이터의 신뢰도를 검증하는 방법을 제안하고 있다.

• KAPE Magazine
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• s.146
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• pp.6-7
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• 2008

2005년 이전 OIE 위생규약상 BSE 예찰기준은 성우(24개월령 이상) 사육규모별로 BSE 유사 임상증상을 보이는 임상의심축을 일정 두수 검사하도록 권고하였으며, 우리나라는 당시 사육규모 당 99두의 임상의 심축만을 검사하면 동 기준을 충족했다. 그러나 OIE의 BSE 예찰기준은 2004년 EU 전염성해면상 뇌증(TSE) 연합 표준 실험실(Community Reference Laboratory, CRL)인 영국 수의연구청에 의해 개발된 BSurvE model과 동모델에 대한 회원국의 의견에 기초하여 2005년 이전의 두수제에서 점수제로 개정됐다. 우리나라는 점수제를 2007년부터 적용했다.

• Defense and Technology
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• no.8 s.282
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• pp.46-55
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• 2002

지난 7월호에서는 COCOMO 모델, 기능점수모델, PRICE-S모델, 일반 COSDES 모델 등의 무기체계 S/W 개발비용 산정모델들을 조사 및 분석하여 제시하였다. 이번 8월호에서는 무기체계 소프트웨어 개발비용산저에 영향을 미치는 요소를 기존의 '한소협' 모델, PRICE-S 모델, 기능점수 모델, COCOMO 모델 등 여러 소프트웨어 개발비용 산정모델을 참고 후 무기체계의 특성을 고려하여 식별하였다. 또한 식별된 요소들을 '한소협' 모델의 절차와 방법에 따라 무기체계 소프트웨어의 스텝 수 산정 영향요소, 환경요인 보정계수 영향요소, 제경비 및 기술료 산정 영향요소들을 식별하여 제시하였다.