• 한국산림과학회지
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• 제84권2호
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• pp.121-130
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• 1995

미국 미시간주의 여행수요(旅行需要)를 예측(豫測)하기 위하여 사용되어진 여러 모델들의 예측정확성(豫測正確性)이 검토되었다. 8가지의 연년(連年)모델들은 2년까지 예측하는데 그리고 9가지의 분기(分期)모델들은 4분기(分期)까지 예측하는데 사용되어 졌다. 연년(連年)모델의 예측정확성(豫測正確性) 평가(評價)에서, 중회귀(重回歸)모델은 1년과 2년을 예측(豫測)하는데 있어 다른 방법들 보다 더 정확(正確)했다. 분기(分期)모델에 있어서는, Winters' exponential smoothing와 Box-Jenkins 방법이 1 분기예측(分期豫測)에 있어 naive 1 s 보다 더 정확(正確)했으나 2분기(分期), 3분기(分期), 4분기(分期)를 예측(豫測)하는데 이 방법(方法)들은 naive 1 s 보다 정확(正確)하지 않았다. 정교(精巧)한 모델들은 분기별(分期別) 예측(豫測)을 하는데 있어서 단순(單純)한 모델들보다 더 정확(正確)하지 않았다. 연년(連年)모델과 분기(分期)모델을 이용한 1년간(年間) 예측비교(豫測比較)에서, 중회귀모형(重回歸模型)은 연간자료(年間資料)보다 분기자료(分期資料)에 적용(適用)할 때 더 좋은 결과(結果)를 얻었으나 그 차이(差異)가 미약(微弱)하며 다른 모델들은 일관성(一貫性)있게 좋은 결과(結果)를 갖지 않으므로 연년(連年)모델보다 分期모델을 사용하도록 강력하게 권장할 수 없다. 연년(連年)모델은 기대(期待)하였던 것처럼 예측기간(豫測期間)이 길어짐으로서 예측정확성(豫測正確性)이 감소(減少)하였으나 분기(分期)모델은 이같은 결과(結果)를 나타내지 않았다.

• 여성건강간호학회지
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• 제4권2호
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• pp.145-161
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• 1998

This correlational study sought to find the relationship among women's health status and the level of importance & performance of postpartal care. One hundred thirty three women who live in Seoul and rural area including hospitalized in a general hospital and midwifery clinic were studied from 1st April, 1998 to 25th April, 1998 for 25 days. Data analysis consisted of frequency, percentage, Pearson Correlation Coefficiency, t-test, ANOVA and Sheffe test as a post hoc, using SPSS. The results of analysis were as follows ; mean age of respondents was 31.9 years and mean number of children was 1.8. The most of family type was nuclear family and lived int apartment. Mean frequency of pregnancy was 2.7 times and most women delivered at local clinic, general or University hospital. Mean period of after delivery was 53.7 month. The level of importance and performance of traditional postpartal care (Sanhujori) was more higher than hospital postpartal care. The level of importance, performance of postpartum care and health status had significant relationship. The higher level of importance was, & the higher level of performance was higher, and the higher degree of health status. The factors related to health status were postabortal sahujori period after abortion, nuclear family, the evaluation of sahujori, whether women and followed the caregiver's advice well or not and whether they have physical symptoms or not, at the level of $5{\sim}0.1%$ of significance statistically. The factors related to the level of importance of postpartal care were the number of child, present health status and health status of pre-post of delivery, deliver place and the opinion of effective postpartum care method at the level of $5{\sim}0.1%$ of significance statistically. The factors related to the level of performance of postpartal care were delivery place, the opinion of whether they can do at the hospital or not and whether they have physical symptom or not at the level of $1{\sim}0.1%$ of significance statistically. In conclusion, this finding reconfirmed the relationship among women's health status and the postpartal care. It provides a challenge to the health professional caregivers to research continually and repeatedly and confirm the conceptual model of Sanhujori, reestablish effective and integrative postpartal caring system which contains oriental and western paradigm for women's life long health toward the 21C.

• 과학교육연구지
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• 제42권1호
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• pp.66-79
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• 2018

본 연구의 목적은 TIMSS 2015 결과에서 상위 성취를 보인 5개국(대한민국, 싱가포르, 대만, 홍콩, 일본)에서 8학년 과학성취에 미치는 교육맥락변인의 영향을 비교 분석하고, 이를 통해 우리나라 과학교육 개선을 위한 시사점을 도출하는 것이다. 과학성취에 미치는 교육맥락변인의 영향력을 비교하기 위해 위계선형모형에 의한 분석을 실시하였다. 연구결과에 따르면 우리나라는 학생수준 변인에서 가정의 학습자원, 과학학습에 대한 흥미, 과학에 대한 가치 인식, 학생의 교육기대 수준이 8학년 학생들의 과학성취도에 유의하게 정적인 영향을 미치는 것으로 나타났다. 학교수준 변인에서는 재학생의 경제적 배경, 학교의 학업적 성공 강조가 과학성취도에 유의하게 정적 영향을 미치는 것으로 나타났다. 상위 5개국 결과를 비교하면 가정의 학습자원, 과학학습에 대한 흥미, 학생의 교육기대 수준이 모든 국가에서 과학성취도에 정적으로 유의한 영향을 미치는 것으로 나타났다. 학교변인에서 재학생의 경제적 배경은 일본을 제외한 모든 나라에서 정적으로 유의한 것으로 나타났으며, 학생 특성에 의한 수업 제한은 우리나라를 제외한 모든 나라에서 정적으로 유의한 것으로 나타났으며, 실험보조 인력은 일본과 대만에서 정적으로 유의한 것으로 나타났다. 연구결과를 토대로 우리나라 중학교 과학과 교수학습에 주는 시사점을 학생과 학교의 사회경제적 지위에 따른 교육격차를 완화, 역량교육을 위한 과학 수업혁신, 과학수업에서 탐구실험 활동 내실화 등의 측면에서 제안하였다.

• 한국사회복지학
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• 제67권4호
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• pp.279-299
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• 2015

본 연구의 목적은 노인장기요양서비스를 이용하는 부양가구원과 여성가구원의 노동공급효과를 확인하는데 있다. 노인장기요양보험제도의 공식적 돌봄 서비스가 부양가구원들의 비공식적 돌봄을 대체한다면, 이는 부양가구원들의 시간제약을 변화시켜 노동공급을 증가시킬 것이다. 따라서 이러한 노동공급효과는 각국의 공적 돌봄 서비스의 제도적 수준에 따라 달라질 수 있다. 지금까지 서구국가들에서는 이에 대한 연구가 활발히 전개되어 왔으나, 이러한 실증분석들은 혼재된 결과를 보인다. 선행연구들에서는 무엇보다 방법론상 내생성의 문제가 지속적으로 제기되어 왔다. 본 연구는 이러한 문제를 해결하고자 유사실험설계인 PSM(Propensity Score Matching)과 DD(Double Difference) 결합모형을 활용하여 선택편의를 최소화하였다. 한국복지패널 3차, 9차 데이터를 활용한 분석 결과, 한국의 노인장기요양보험제도의 노동공급효과는 나타나지 않았다. 단순이중차이분석에서는 노동시간과 근로소득이 유의미하게 증가한 것으로 나타났지만, 더 엄격하다고 볼 수 있는 이중차이 고정효과모형분석에서는 그 효과가 나타나지 않았다. 이를 서구의 경험적 연구결과에 비춰보면, 한국의 공적 돌봄서비스인 노인장기요양보험제도가 비공식적 돌봄을 대체하지 못하고 일부만을 보완하는 수준에 머물러 있는 것이라고 해석할 수 있다. 본 연구의 분석결과는 그동안 제기되어온 노인장기요양서비스의 급여불충분성에 대한 증거가 될 수 있으며, 노인장기요양서비스의 제도적 배열이 대상자 및 부양가족의 욕구에 맞도록 선택되어져야 한다는 함의를 가진다.

• 대한치과기공학회지
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• 제25권1호
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• pp.173-185
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• 2003

This study mainly intends to determine the factors for which dental technicians are satisfied with their jobs and how much the resulting job transfer rate is and thus to identify the correlation between them. For these purpose, 200 subjects were sampled out of dental technicians in Seoul and Incheon, and the survey was performed from July 19, 2002 to August 15 (for 25 days) with self-administered questionnaire. Out of all collected questionnaires, 131 pieces(65.5%) were addressed for this study. As for the tools for this study, the structured questionnaire was used with its proven reliability and feasibility, and the contents of questionnaire consisted of 32 questions on the basis of related references. The contents of questionnaire were categorized into 3 sections: General attribute of subjects; Factors for which dental technicians are satisfied with their jobs; and their intention of job transfer. The questionnaire consisted of total 32 questions which included general attribute of subjects(10 questions), factors of their satisfaction with jobs(17 questions) and intention of job transfer(5 questions). The data analysis was processed by computerized system with SPSS(Statistical Package for Social Sciences). Statistical analysis techniques included frequency, percentage, T-test, F-test analysis and regression analysis. As a result of those analyses, the conclusion can be summarized as follows: 1. As a result of analyzing the factors for which the subjects were satisfied with their jobs, it was found that there were significant differences in career and job title out of question items(P<0.001). It was also shown that the factors of subjects' satisfaction averaged 3.43, which was considerably higher value than I expected. It was found that job and management factors were major job satisfaction factors. 2. As a result of analyzing the intention of subjects to decide their job transfer, it was found that there were significant differences in job title and marital status out of question items(P<0.001). It was shown that the total average of the intention of their job transfer amounted to 3.06. It was shown that dental technicians have relatively higher intention of job transfer from their current work place. 3. It was found that there was inverse correlation between the factors of subjects' satisfaction with their jobs and their intention of job transfer(r=-0.490, P<0.05). Likewise, it was also found that there was inverse correlation mostly between the evaluation value for each independent variable region in term of each factor of job satisfaction and the value for the intention of job transfer. In view of these correlations, it was concluded that higher job satisfaction likely led to lower job transfer. 4. As a result of regression analysis so as to determine the influences of job satisfaction factors on the intention of job transfer, it was found that the highest influential factor was management factor. And it was shown that the test values of model were statistically significant and its explanatory power amounted to 54.6%.

• 전자공학회논문지
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• 제52권12호
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• pp.124-133
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• 2015

전기체간스캔법(EIS, electro interstitial scan)은 미세 직류전류를 인체의 사지말단 또는 국소적 인가를 통해 인체의 전류 반응을 기준으로 인체의 질병 유무를 판별할 수 있는 비침습적인 질병 스크리닝 방법으로 가능성을 보이고 있다. 프랑스에서 개발된 DDFAO는 다채널 EIS로 다양한 질병, 특히 당뇨와 같은 내분비 기관의 진단에 효과적이라고 주장한다. 본 연구에서는 RC 팬텀 모델을 이용하여 DDFAO의 측정의 반복성과 민감도를 확인하고, 정상군과 당뇨 질환군을 대상으로 임상적 유용성을 검정하였다. 그 결과, 팬텀을 이용할 경우, 반복 측정시 값의 변화가 없고 팬텀 특성이 변화될 때 DDFAO의 측정 결과도 변화되었다. 그러나 임상 측정에 있어서 6개의 표면 전극을 이용하여 비침습적 방법으로 정상인과 당뇨병 환자의 구별은 어려울 뿐만 아니라 반복성과 정확성도 우수하지 않았다. 그러나, 이러한 문제점에도 불구하고 측정 방법의 편리성과 간편성으로 인해 국소적인 영역보다 인체 전반적인 특성을 파악하는 스크린 장비로써의 개발 가능성은 여전히 보이고 있기에 EIS에 대한 다양한 기반 연구가 필요하다.

• 한국가정과교육학회지
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• 제4권1호
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• pp.87-95
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• 1992

The purpose of this study is to suggest how we can get over the difficulties of practical drill under experimentation concerning the units of making clothes in the curriculum of home economics. The import of this study was based on the results of the preceding studies the field of the making Korean clothes, from the standpoint of the teaching tools and teaching materials by the use of VTR, is one of the most insufficient. On the one hand, the teaching procedure here a VTR, running 34 minutes or so, was made up with the process of making Korean men’s slacks, and was led by the researcher’s own. The contents of the lesson are as follows： the shape of Korean clothes, the name of each part, the process of drawing, cutting and sewing, and the items of evaluation and arrangement. On the other hand, the two comparative groups were made to compare one with the other： One group was taught by help of VTR media, and the other by the model performance and explanation of the instructor’s own. All of the statistical data were analyzed in terms of SPSS/PC, and t-verification was made, to make difference between the two, after standard deviation was calculated according to the classified domains. The consequences of the test research are shown as below： 1. The difference of understanding was obviously made in considering that the group made a better score than the comparative one in understanding to process of making Korean clothes. 2. The difference of skill was highly made in considering that the group made a better score than the comparative one in the practical drill of making Korean clothes. 3. The difference of interests was evidentally made in considering that the group made a better score than the comparative one in the stage of making Koran clothes. Such means that the motivation and attitude of the learners was made stimulate by the Audio-Visual material than by the traditional cramming method. 4. The difference of frequency was fairly made in considering that the experimeatal group made a better score than the comparative one in the frequency of individual teaching. 5. The difference of the efficiency of time-consumption was clearly made in considering that the experimental group made a better score than the comparative one. As the results of the research above, the medium of VTR proved to more effective to the achievement of schoolwork and the strategies of teaching. Therefore, more use of VTR media will help the instructors with the difficulties of practical drill in the whole process of making Korean clothes； Widely use of VTR media in teaching will be surely more fruitfull to the unit of making Korean clothes than teaching by explanation.

• Asian-Australasian Journal of Animal Sciences
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• 제33권11호
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• pp.1741-1754
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• 2020

Objective: This study was conducted to estimate genetic parameters for milk yield traits using daily milk yield records from parlour data generated in an intensively managed commercial dairy farm with Jersey and Jersey-Friesian cows in Sri Lanka. Methods: Genetic parameters were estimated for first and second lactation predicted and realized 305-day milk yield using univariate animal models. Genetic parameters were also estimated for total milk yield for each 30-day intervals of the first lactation using univariate animal models and for daily milk yield using random regression models fitting second-order Legendre polynomials and assuming heterogeneous residual variances. Breeding values for predicted 305-day milk yield were estimated using an animal model. Results: For the first lactation, the heritability of predicted 305-day milk yield in Jersey cows (0.08±0.03) was higher than that of Jersey-Friesian cows (0.02±0.01). The second lactation heritability estimates were similar to that of first lactation. The repeatability of the daily milk records was 0.28±0.01 and the heritability ranged from 0.002±0.05 to 0.19±0.02 depending on day of milk. Pearson product-moment correlations between the bull estimated breeding values (EBVs) in Australia and bull EBVs in Sri Lanka for 305-day milk yield were 0.39 in Jersey cows and -0.35 in Jersey-Friesian cows. Conclusion: The heritabilities estimated for milk yield in Jersey and Jersey-Friesian cows in Sri Lanka were low, and were associated with low additive genetic variances for the traits. Sire differences in Australia were not expressed in the tropical low-country of Sri Lanka. Therefore, genetic progress achieved by importing genetic material from Australia can be expected to be slow. This emphasizes the need for a within-country evaluation of bulls to produce locally adapted dairy cows.

• Asian-Australasian Journal of Animal Sciences
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• 제30권11호
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• pp.1550-1556
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• 2017

Objective: This study estimated the genetic parameters for productive and reproductive traits. Methods: The data included production and reproduction records of animals that have calved between 1979 and 2013. The genetic parameters were estimated using multivariate mixed models (DMU) package, fitting univariate and multivariate mixed models with average information restricted maximum likelihood algorithm. Results: The estimates of heritability for milk production traits from the first three lactation records were $0.03{\pm}0.03$ for lactation length (LL), $0.17{\pm}0.04$ for lactation milk yield (LMY), and $0.15{\pm}0.04$ for 305 days milk yield (305-d MY). For reproductive traits the heritability estimates were, $0.09{\pm}0.03$ for days open (DO), $0.11{\pm}0.04$ for calving interval (CI), and $0.47{\pm}0.06$ for age at first calving (AFC). The repeatability estimates for production traits were $0.12{\pm}0.02$, for LL, $0.39{\pm}0.02$ for LMY, and $0.25{\pm}0.02$ for 305-d MY. For reproductive traits the estimates of repeatability were $0.19{\pm}0.02$ for DO, and to $0.23{\pm}0.02$ for CI. The phenotypic correlations between production and reproduction traits ranged from $0.08{\pm}0.04$ for LL and AFC to $0.42{\pm}0.02$ for LL and DO. The genetic correlation among production traits were generally high (>0.7) and between reproductive traits the estimates ranged from $0.06{\pm}0.13$ for AFC and DO to $0.99{\pm}0.01$ between CI and DO. Genetic correlations of productive traits with reproductive traits were ranged from -0.02 to 0.99. Conclusion: The high heritability estimates observed for AFC indicated that reasonable genetic improvement for this trait might be possible through selection. The $h^2$ and r estimates for reproductive traits were slightly different from single versus multi-trait analyses of reproductive traits with production traits. As single-trait method is biased due to selection on milk yield, a multi-trait evaluation of fertility with milk yield is recommended.

• 디지털융복합연구
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• 제15권3호
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• pp.221-228
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• 2017

최근 IoT 기술이 발달함에 따라 헬스케어 서비스를 제공하는 많은 의료기관에서는 IoT 기술을 이용한 의료 서비스가 점점 증가하고 있는 추세이다. 그러나, 사용자 신체에 부착된 IoT 센서의 갯수가 증가하면서 서버에 전달되는 헬스케어 정보는 점점 복잡해져서 서버에서 사용자의 헬스케어 정보를 분석하는 시간이 증가하는 문제점이 발생하고 있다. 본 논문에서는 사용자에 부착된 IoT 장치를 통해 전달되는 다량의 헬스케어 정보를 서버에서 의료 목적에 맞게 헬스케어 정보를 수집 및 처리하기 위한 딥 러닝 기반의 헬스케어 정보 관리 기법을 제안한다. 제안 기법은 서버에 전달된 헬스케어 정보에 속성값을 부여하여 속성값에 따른 서브넷을 구축한 후 서브넷간 연계 정보를 시드로 추출하여 계층적 구조로 그룹화 한다. 제안 기법은 서버에서 그룹화된 헬스케어 정보를 딥 러닝에 적용하여 사용자의 치료 및 처방에 대한 관찰 속도 및 정확도를 향상시킬 수 있어 최적화된 정보를 추출할 수 있는 특징이 있다. 성능평가 결과, 제안기법은 헬스케어 서비스 모델에서 동작되는 의료 서비스의 처리속도가 기존기법에 비해 평균 14.1% 향상되었고, 서버의 오버헤드는 기존 기법보다 평균 6.7% 낮았다. 헬스케어 정보 추출에 대한 정확도는 기존 기법보다 평균 10.1% 높은 결과를 얻었다.