• 융합정보논문지
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• 제11권4호
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• pp.161-167
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• 2021

본 연구는 노인운전자의 운전능력을 선별하는 검사로서 이중과제가 활용될 수 있는지 확인하고자 노인운전자의 이중과제 수행과 운전 행동간의 상관관계를 알아보았다. 총 32명의 정상 노인운전자를 대상으로 일반적 정보 및 운전 관련 정보를 조사하고 이중과제 수행정도를 알아보기 위하여 Y-DuCog(Yonsei-Dual task Cognitive screening test)를 평가하였다. 운전행동 수준은 K-DBQ(Korean-Driving Behavior Questionnaire)설문을 사용하였다. 연구결과 페그꽂기 과제와 동물이름 말하기를 활용한 이중과제 수행이 K-DBQ의 위반영역의 점수와 유의미한 상관관계를 보였다. 본 연구로 운전능력 선별검사로서 이중과제의 가능성을 확인할 수 있었다.

• 한국한의학연구원논문집
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• 제13권1호통권19호
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• pp.85-92
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• 2007

To evaluate the suitability and effectiveness of the questionnaire concerning personal properties on 'pattern of speech and activity' according to the Sasang constitution that were used in Iksan Wonkwang Oriental Medicine, we analyzed the data of 1,335 patients obtained through the electronic chart in the aspect of 'relative discrimination ability' to Sasang constitutions and 'response ratio' using statistical Package SPSS. In categories of 'speech pattern', No.2 (speak mildly and softly) was effectively discriminating Soeum type. No.4 (talkative) and No.7 (speak fast) were effective factors for the discrimination of Soyang type, though No.4 (talkative) was needed to be improved in response ratio. The category of 'activity pattern' has shown high response ratio but low discriminating power. However, No.2 (keep staying home but avoid going out) in this category was effectively discriminating Soeum type. The discriminating power of 'pattern of speech and activity' for the age group less than 20 years old was too low, so it is necessary to develop the questionnaire for the elementary to high school students as well as for the preschoolers.

• 과학교육연구지
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• 제34권1호
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• pp.155-163
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• 2010

이 연구의 목적은 본 연구는 영재선발도구로서 지필 검사 문항의 적합성에 대한 검토를 위해 초등과학영재교육원의 학생 선발에 지난 3년간 사용된 지필 검사 문항들을 대상으로 문항 분석을 하여, 영재교육 대상자 선발 방법에 대한 새로운 전형방식에 주는 교훈을 얻기 위하여 실시하였다. 문항 분석 결과, 평균 문항 난이도와 변별도는 대체로 양호한 편이었으며, 교과 및 내용별로도 큰 차이가 없는 것으로 분석되었다. 서술형 문항이 객관형 문항에 비해 어렵게 출제되었으며, 변별력이 높았던 것으로 분석되었다. 특정 문항들과 총점과의 상관관계에서 객관형 문항의 경우는 물질 문항과, 자료변환 및 자료해석 문항에서 가장 높은 상관이 나타났으며, 서술형 문항의 창의성 문항이 총점과의 상관이 가장 높은 것으로 분석되었다. 선발 시험에 응시한 학생들의 성별의 따른 차이를 t 검증으로 분석한 결과, 자료변환 및 자료해석과 창의성에서 남학생의 평균이 유의미하게 높은 것으로 나타났다.

• 한국과학교육학회지
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• 제16권1호
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• pp.51-60
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• 1996

The purpose of this study is to develope and analyze a test for the assessment of physics inquiry experiment. To do this, three experiments about 'analysis of motion', 'the relation of force and acceleration', and 'free fall motion' in high school physics textbooks were chosen, and 5 scientific inquiry domains and 16 science process skills have been specified. For each experiments, test sheet of $29{\sim}44$ questions for assessing students' ability about physics inquiry experiment were developed on the basis of the scientific inquiry processes developed earlier. After instruction about 3 experiments mentioned above, a test was administered to the students who took experiment. After the adminstration of a test, the ratio of correct answers, discrimination index, and reliability were analyzed. Using the ratio of correct answers, we can determine item difficulty. Through the D.I(discrimination index), we can find which items can discriminate the students who took experiment well from those who took experiment badly, and we can also find the stability of a test result by the reliability analysis. The test developed in this study were also administered to the students who did not take experiments, and the results were compared with the those of the students who took experiments. With the comparison by chi-square method, we could find which items can discriminate the students who took experiments from those who did not take experiments.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제13권8호
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• pp.3962-3980
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• 2019

To deal with single sample face recognition, this paper presents a patch based semi-supervised linear regression (PSLR) algorithm, which draws facial variation information from unlabeled samples. Each facial image is divided into overlapped patches, and a regression model with mapping matrix will be constructed on each patch. Then, we adjust these matrices by mapping unlabeled patches to $[1,1,{\cdots},1]^T$. The solutions of all the mapping matrices are integrated into an overall objective function, which uses ${\ell}_{2,1}$-norm minimization constraints to improve discrimination ability of mapping matrices and reduce the impact of noise. After mapping matrices are computed, we adopt majority-voting strategy to classify the probe samples. To further learn the discrimination information between probe samples and obtain more robust mapping matrices, we also propose a multistage PSLR (MPSLR) algorithm, which iteratively updates the training dataset by adding those reliably labeled probe samples into it. The effectiveness of our approaches is evaluated using three public facial databases. Experimental results prove that our approaches are robust to illumination, expression and occlusion.

• 한국생활과학회지
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• 제20권6호
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• pp.1093-1107
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• 2011

The purpose of this study was to examine the effect of stress types and coping styles on the relationship quality with mothers-in-law perceived by sons-in-law. The data was collected from 300 sons-in-law aged 20~49 by using a survey questionnaire. The main results of this study were as follows: first, factor analysis yielded 4 types of coping(cognitive understanding coping, avoidant coping, direct behavior coping, and indirect behavior coping) and 7 types of stress(despising poor ability and condition, interference in daily life, son-in-law discrimination, wife discrimination, uncomfortable interaction, differences in lifestyle, and excessive demand). Second, the total stress perceived by sons-in-law in the relationship with their mothers-in-law was affected by avoidant coping and cognitive understanding coping. Finally, the relationship quality between mothers-in-law and sons-in-law was influenced by avoidant coping, uncomfortable interaction stress, direct behavior coping, differences in lifestyle stress, son-in-law discrimination stress, interference in daily life stress, frequency of meeting, cognitive understanding coping, indirect behavior coping, and age. Consequently, it was confirmed that sons-in-law's coping styles with stress from their mothers-in-law was more influential than the amount of stress perceived by sons-in-law on the relationship quality with their mothers-in-law. Especially, 'avoidant coping' among 4 styles of coping and 'uncomfortable interaction stress' among 7 types of stress influenced the relationship quality between mothers-in-law and sons-in-law the most.

• 대한청각학회지
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• 제25권3호
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• pp.119-123
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• 2021

Background and Objectives: The influence of music training on different areas of the brain has been extensively researched, but the underlying neurobehavioral mechanisms remain unknown. In the present study, the effects of training for more than three years in Carnatic music (an Indian form of music) on the discrimination ability of different areas of the brain were tested using P300 analysis at three electrode placement sites. Subjects and Methods: A total of 27 individuals, including 13 singers aged 16-30 years (mean±standard deviation, 23±3.2 years) and 14 non-singers aged 16-30 years (mean age, 24±2.9 years), participated in this study. The singers had 3-5 years of formal training experience in Carnatic music. Cortical activities in areas corresponding to attention, discrimination, and memory were tested using P300 analysis, and the tests were performed using the Intelligent Hearing System. Results: The mean P300 amplitude of the singers at the Fz electrode placement site (5.64±1.81) was significantly higher than that of the non-singers (3.85±1.60; t(25)=3.3, p<0.05). The amplitude at the Cz electrode placement site in singers (5.90±2.18) was significantly higher than that in non-singers (3.46±1.40; t(25)=3.3, p<0.05). The amplitude at the Pz electrode placement site in singers (4.94±1.89) was significantly higher than that in non-singers (3.57±1.50; t(25)=3.3, p<0.05). Among singers, the mean P300 amplitude was significantly higher in the Cz site than the other placement sites, and among non-singers, the mean P300 amplitude was significantly higher in the Fz site than the other placement sites, i.e., music training facilitated enhancement of the P300 amplitude at the Cz site. Conclusions: The findings of this study suggest that more than three years of training in Carnatic singing can enhance neural coding to discriminate subtle differences, leading to enhanced discrimination abilities of the brain, mainly in the generation site corresponding to Cz electrode placement.

• Journal of Audiology & Otology
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• 제25권3호
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• pp.119-123
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• 2021

Background and Objectives: The influence of music training on different areas of the brain has been extensively researched, but the underlying neurobehavioral mechanisms remain unknown. In the present study, the effects of training for more than three years in Carnatic music (an Indian form of music) on the discrimination ability of different areas of the brain were tested using P300 analysis at three electrode placement sites. Subjects and Methods: A total of 27 individuals, including 13 singers aged 16-30 years (mean±standard deviation, 23±3.2 years) and 14 non-singers aged 16-30 years (mean age, 24±2.9 years), participated in this study. The singers had 3-5 years of formal training experience in Carnatic music. Cortical activities in areas corresponding to attention, discrimination, and memory were tested using P300 analysis, and the tests were performed using the Intelligent Hearing System. Results: The mean P300 amplitude of the singers at the Fz electrode placement site (5.64±1.81) was significantly higher than that of the non-singers (3.85±1.60; t(25)=3.3, p<0.05). The amplitude at the Cz electrode placement site in singers (5.90±2.18) was significantly higher than that in non-singers (3.46±1.40; t(25)=3.3, p<0.05). The amplitude at the Pz electrode placement site in singers (4.94±1.89) was significantly higher than that in non-singers (3.57±1.50; t(25)=3.3, p<0.05). Among singers, the mean P300 amplitude was significantly higher in the Cz site than the other placement sites, and among non-singers, the mean P300 amplitude was significantly higher in the Fz site than the other placement sites, i.e., music training facilitated enhancement of the P300 amplitude at the Cz site. Conclusions: The findings of this study suggest that more than three years of training in Carnatic singing can enhance neural coding to discriminate subtle differences, leading to enhanced discrimination abilities of the brain, mainly in the generation site corresponding to Cz electrode placement.

• 한국환경복원기술학회지
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• 제27권3호
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• pp.29-43
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• 2024

Legally protected species are one of the crucial considerations in the field of natural ecology when conducting environmental impact assessments (EIAs). The occurrence of legally protected species, especially 'Endangered Wildlife' designated by Ministry of Environment, significantly influences the progression of projects subject to EIA, necessitating clear investigations and presentations of their habitats. In perspective of statistics, a minimum of 30 occurrence coordinates is required for population prediction, but most of endangered wildlife has insufficient coordinates and it posing challenges for distribution prediction through modeling. Consequently, this study aims to propose modeling methodologies applicable when coordinate data are limited, focusing on Rodgersia podophylla, representing characteristics of endangered wildlife and northern plant species. For this methodology, 30 random sampling coordinates were used as input data, assuming little survey data, and modeling was performed using individual models included in BIOMOD2. After that, the modeling results were evaluated by using discrimination capacity and the reality reflection ability. An optimal modeling technique was proposed by ensemble the remaining models except for the MaxEnt model, which was found to be less reliable in the modeling results. Alongside discussions on discrimination capacity metrics(e.g. TSS and AUC) presented in modeling results, this study provides insights and suggestions for improvement, but it has limitations that it is difficult to use universally because it is not a study conducted on various species. By supporting survey site selection in EIA processes, this research is anticipated to contribute to minimizing situations where protected species are overlooked in survey results.

• 한국산림과학회지
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• 제105권4호
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• pp.422-428
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• 2016

은행나무는 이식성이 좋고 열악한 환경에서도 잘 자라기 때문에 도심 가로수나 조경수로 매우 적합한 수종이다. 은행나무는 암수딴그루 식물로 수나무와 암나무의 생식기관(수꽃과 암꽃)의 비교를 통하여 성을 식별할 수 있으나, 꽃이 달리기까지 약 20년 이상이 필요하다. 가로수용 은행나무는 주로 꽃이 생성되기 이전에 식재되기 때문에 암나무와 수나무 구분 없이 가로수로 식재되어왔다. 가로수로 식재된 암나무에서 열리는 은행나무 열매는 악취를 발산하고 거리 오염을 야기하고 있다. 따라서 본 연구에서는 유시에 수나무를 선별하기 위하여 기존에 보고된 수나무 특이 RAPD 변이체의 염기서열을 기반으로 수나무에서만 675 bp의 PCR 산물을 증폭하는 SCAR 마커(SCAR-GBM)를 개발하였다. SCAR-GBM 마커의 우성 마커 특성에 기인한 위음성(false-negative)문제를 해결하고 식별 효율을 향상시키기 위하여 SCAR-GBM 마커와 mtDNA의 atp1 영역을 증폭하는 범용 프라이머를 동시에 적용하는 multiplex PCR을 이용하였다. 그 결과 암나무와 수나무에서 공히 atp1 영역에 해당하는 1,039 bp의 PCR 산물이 증폭되었으며, 수나무에서만 특이적으로 SCAR-GBM 마커가 증폭되었다. 전국 8개 지역에서 채취된 암나무와 수나무 각 80개체에 대한 분석을 통하여 SCAR-GBM 마커와 multiplex PCR 방법의 재현성이 확인되었다.