• The monthly packaging world
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• s.280
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• pp.44-57
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• 2016

(사)한국포장재재활용사업공제조합은 자원의 재활용 촉진 및 환경친화적이며 효율적인 재활용 촉진을 위하여 그와 관련한 연구 및 기술개발을 수행 또는 지원을 바탕으로, 재활용 산업을 육성 발전시킴으로써 환경보전과 국민의 삶의 질 향상에 기여하며 "자원의 절약과 재활용 촉진에 관한 법률 제16조 제1항"의 규정에 의한 제품 포장재의 제조 수입 판매업자의 재활용 의무를 대행함을 목적으로 설립된 단체이다. 조합 연구소는 지난 4월 2015 포장재 자원순환 연차보고서를 발표했다. 본 고에서는 EPR대상 포장재 재활용 의무량 및 실력과 함께 연도별 포장재 재질 구조 등급별 시장조사, 재활용 현황에 대해 살펴본다.

• Proceedings of the Korea Multimedia Society Conference
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• 2004.05a
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• pp.798-801
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• 2004

본 연구는 휴대전화기의 문자메시지 전송UI가 사용자 만족도에 미치는 영향에 관한 것이다. 휴대전화기의 문자메시지 전송UI은 한글, 영문, 숫자, 특수문자, 기능키의 조합으로 이루어지고, 연구결과 사용자 만족도에 가장 많은 영향을 미치는 것은 한글 모음 입력임이 입증되었다. 가장 만족도가 높은 모음 입력방식은 점과 선을 이용하여 모음을 조합하는 방식이며, 짧은 동선과 그로 인한 입력시간 단축이 주요인이었다. 조사방법은 사용자 대상 설문조사를 사용하였고, 연구 방식은 문장을 입력할 때의 각 휴대전화 문자입력 UI의 동선과 버튼을 누르는 횟수를 비교 분석하여 결과를 도출하였다.

• Journal of Convergence Korean Medicine
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• v.1 no.1
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• pp.25-33
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• 2021

경혈과 경락학설은 침의 치료 효과를 설명하고 최선의 침 치료 전략을 세우기 위해 이용되어 왔다. 이번 연구를 통해 요통 환자를 대상으로 한 무작위 대조군 임상 연구에서 요통을 치료하기 위해 사용된 경혈의 빈도를 알아보았다. PUMBED 데이터베이스를 통해 요통 환자를 대상으로 manual acupuncture나 electro-acupuncture를 사용한 논문을 분석했다. 총 664편의 논문이 검색되었으며, 그 중 62편의 논문을 분석 결과에 따르면 신수, 위중, 대장수, 곤륜, 환도, 아시혈, 관원수, 양릉천, 기해수, 요양관이었으며, 태계혈이 함께 조합되어 사용되었다. 이를 통해 요통에 대한 침 치료 효과를 밝히기 위한 이전의 연구들에서 족태양방광경의 경혈들이 주로 사용된 것, 그리고 근위와 원위의 경혈이 사용된 것을 알 수 있다. 추후 연구를 통해 경혈과 치료 효과 간의 상관 관계를 밝히고 경혈을 선정하고 조합하는 원리에 대한 가이드라인을 제시하기 위해서는 치료 효과에 대한 정량적인 분석 방법과 이용한 경혈에 대한 자세한 보고가 필수적이다.

• Journal of the Korean Society for information Management
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• v.25 no.1
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• pp.211-233
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• 2008

This study examines various weighting methods for improving the performance of automatic classification based on Rocchio algorithm on two collections(LISA, Reuters-21578). First, three factors for weighting are identified as document factor, document factor, category factor for each weighting schemes, the performance of each was investigated. Second, the performance of combined weighting methods between the single schemes were examined. As a result, for the single schemes based on each factor, category-factor-based schemes showed the best performance, document set-factor-based schemes the second, and document-factor-based schemes the worst. For the combined weighting schemes, the schemes(idf*cat) which combine document set factor with category factor show better performance than the combined schemes(tf*cat or ltf*cat) which combine document factor with category factor as well as the common schemes (tfidf or ltfidf) that combining document factor with document set factor. However, according to the results of comparing the single weighting schemes with combined weighting schemes in the view of the collections, while category-factor-based schemes(cat only) perform best on LISA, the combined schemes(idf*cat) which combine document set factor with category factor showed best performance on the Reuters-21578. Therefore for the practical application of the weighting methods, it needs careful consideration of the categories in a collection for automatic classification.

• Journal of Science Education
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• v.33 no.1
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• pp.69-76
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• 2009

Probabilistic reasoning and combinational reasoning are essential to build a logical thinking and a process of thinking dealing with everyday life as well as scientific knowledge. This research aims at finding the optimal period to teach reasoning to the students who haven't developed probabilistic reasoning and combinational reasoning. The treatment program was performed for 20 students from each grade who couldn't develop two parts of reasoning. The treatment program using baduk stones and cards was performed repeatedly, focusing on the specific activities. After four weeks of treatment program, the test to check the development of probabilistic reasoning and combinational reasoning was performed again and the changes of reasoning development were identified. After giving treatment program for reasoning development, 15.0%, 25.0% and 40.0% of improvement in the 4th, the 5th, the 6th graders respectively were shown. With regard to the combinational reasoning, the results showed the improvement of 20.0% in the 4th grades, 25.0% in the 5th graders and 63.2% in the 6th graders. As a result of research in the above, students, who were not formed probabilistic reasoning and combinational reasoning, could be known to be enhanced through learning, but to fail to be formed the qualitative change like the cognitive development. It is expected that this research can contribute to the improvement of students' cognitive level and there would be more active researches in different fields to improve the cognitive level of the 6th graders who are in their optimal periods to learn two parts of reasoning.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.1
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• pp.526-537
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• 2016

Objective: This study examined the changes in the clustering of metabolic syndrome, and examined the distribution of a combination of clustering. Methods: The study was performed with the data from the same 1,900 people who had a medical checkup at a health clinic twice from 2009 to 2013. The subjects were divided into two groups of metabolic syndrome and non-metabolic syndrome (normal group) and examined according to the periodic changes. The related factors were examined with a cohort study. Results: The order affecting the prevalence of metabolic syndrome by the combination of metabolic syndrome constituent factors was two combinations (TG+HDL), three combinations (WC+TG+HDL), and four combination (WC+TG+HDL+BP). Conclusions: To manage these factors, public health programs will be needed and the methods to prevent metabolic syndrome should be promoted. In addition, more study on the risk factors of metabolic syndrome will be needed.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.37 no.3
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• pp.250-256
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• 1992

This study was carried out to obtain basic genetic informations in pea(Pisum sativum L.). A series of field experiments were carried out with seven pea cultivars and F$_1$ hybrids for three years. Based on the information collected from a set of diallel crosses, the behaviours of inheritance of seed yield and ten major agronomical characters were observed by the estimation of heterosis and combining ability. Heterosis for seed yield per plant was 79% and those for yield components such as number of seeds per plant, number of pods per plant, stem length, stem diameter, number of branches per plant, also showed relatively high values. General combining ability(GCA) and specific combining ability(SCA) were significantly different among major agronomic characters, and the variances of GCA were higher than those of SCA latter. Among the tested cultivars, Alderman was found to be the most promising parent based upon the GCA effects on the seed yield and yield components. The crosses of Sugar Ann$\times$Alderman, Wando$\times$Alderman and JI 1198$\times$Chinju ＃6, showed the highest SCA effects on seed yield and yield components.

• Corrugated packaging logistics
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• s.88
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• pp.114-116
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• 2009

공장자동화 물품에 관한 관세감면 규칙은 "관세법" 제95조 제1항 4호에 따라 관세가 감면되는 공장자동화 기계 기구 설비 및 핵심부분품을 정함을 목적으로 하며 공장자동화 물품에 관한 관세감면 규칙을 다음과 같이 공포한다.

• Korean Journal of Poultry Science
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• v.50 no.4
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• pp.203-212
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• 2023

This study conducted a diallel-crossbreeding test using four Korean native chicken parent stock lines (YC, YD, CK, and CF) to develop a native commercial layer with high egg-laying performance. A total of 312 chickens in six combinations were examined for various traits, including livability, body weight, age at first egg-laying, hen-day, and hen-housed egg production, egg weight, and egg quality, from hatching to 60 weeks of age. The results showed that the average survival rate was 77.1±18.8% with the YDYC combination having the highest survival rate along with excellent specific combining ability. The YDYC combination exhibited significantly higher body weight compared to the other combinations (P<0.01). The average age at first egg-laying was 121.3±2.5 days, with no significant difference between the combinations. The average hen-day egg production was 74.0±6.4%, and the hen-housed egg production was 181.4±33.8 eggs with the YDCF and YCCK combinations demonstrating the highest laying performance, while the YDYC and CKCF combinations had the lowest (P<0.05). Laying performance was more influenced by specific combining ability than general combining ability. The eggs from the YDYC combination were significantly lighter and had the darkest shell color (P<0.01), whereas the YDCF combination exhibited the thickest eggshells. There was no difference in internal egg quality among combinations, except the YDCF combination had the darkest yolk color. Overall, we concluded that the YCCK combination, characterized by high laying performance and livability, and the YDCF combination with high laying performance and good egg quality are the most desirable combinations for Korean native commercial layers.