• 제목/요약/키워드: global optimum

검색결과 504건 처리시간 0.026초

교육수요 분석을 통한 RI-Biomics 전문인력 양성 프로그램 개발 및 적용 (Development and Application of Training Program for RI-Biomics Manpower through Analysis of Educational Demands)

  • 신우호;박태진;염유선
    • 한국과학교육학회지
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    • 제35권1호
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    • pp.159-167
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    • 2015
  • RI-Biomics 기술 분야는 차세대 국가 신 성장 동력 핵심기술 중의 하나로써 전 세계적으로 비약적인 발전을 하고 있는 첨단방사선융합 분야이다. 이에 각 선진국들은 RI-Biomics 분야의 세계 경제시장에서 앞서 나가기 위하여 집중적인 지원과 부단한 노력을 기울이고 있다. 이러한 RI-Biomics 분야를 국내에서 주도하기 위해서는 세계수준에 맞는 고도의 기술력과 전문지식을 지닌 우수한 인력들의 확보가 필요하지만, 국내에서는 보유한 기술력에 비해 수행할 수 있는 전문인력들이 부족한 실정이다. 따라서 본 연구에서는 검증된 RI-Biomics 인력양성 모델을 활용하여 전문가 인터뷰와 전국 학생대상 설문조사를 반영한 최적화된 교육프로그램을 설계 및 개발함으로써 RI-Biomics 전문인력양성을 위한 기반을 구축하고자 하였다. 본 교육프로그램은 RI-Biomics 분야를 크게 4개의 분야로 구분하여 구성하였으며, 각 과정별 교육을 통하여 RI-Biomics 분야의 전반적인 과정을 이해하는데 주안점을 두고 개발되었다. 교육프로그램의 유용성 및 타당성을 검증하기 위하여 실제 유관학과 대학생 8명을 대상으로 시범운영을 실시하였으며, 한국방사선진흥협회(서울)와 한국원자력연구원 첨단방사선 연구소 RI-Biomics 센터(정읍)에서 총 3주간 진행 되었다. 세부 교육과정은 RI-Biomics 분야의 기본교육인 방사성동위원소 취급 및 안전교육 1주, 전문기술 교육인 RI-Biomics 응용기술 2주로 구성되었다. 3주간의 교육결과를 평가하기 위하여 실습일지와 개별보고서를 작성하였으며, 설문조사를 통하여 교육 만족도 및 건의사항을 수렴하였다. 본 교육프로그램 운영결과, 모든 학생들이 교육과정에 대한 높은 만족도와 지속적인 참여의사를 나타냈다. 또한 시범교육 운영 간 우수인력 발굴 및 지속적인 교육프로그램 운영을 위한 심화과정의 필요성이 제기되었다. 본 연구를 통해 제시된 교육프로그램과 운영방안은 향후 RI-Biomics 분야의 대학 교과과정 개발을 위한 기초자료로 활용될 것이며, RI-Biomics 기술 전문인력들의 양성과 국내 RI-Biomics 분야의 발전에 기여할 것이다.

답토양(畓土壤)의 Ca, Mg 포화비(飽和比)가 수도(水稻)의 Ca, Mg, K의 흡수(吸收)에 미치는 영향(影響) (Study on the Influence of Ca and Mg Saturation Ratios of Soil on the Uptake of Ca, Mg, and K by Rice Plant)

  • 정이근;홍종운;하호성
    • 한국토양비료학회지
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    • 제20권2호
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    • pp.115-121
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    • 1987
  • 토양중(土壤中) Ca 및 Mg의 포화비(飽和比)가 상이(相異)하고 가리(加里) 시용량(施用量)이 상이(相異)할 경우 Ca, Mg및 K가 수도수량(水稻收量)에 미치는 영향(影響)을 밝히기 위하여 Ca 및 Mg의 포화비(飽和比)를 81:19, 70:30, 52:48, 45:55 및 31:69로 각각(各各) 조절(調節)한후 가리(加里)를 반당(反當) 9 및 18kg을 시용(施用)하고 진흥(振興)을 공시품종(供試品種)으로 pot 시험(試驗)을 하였는바 그 결과(結果)를 요약(要約)하면 다음과 같다. 1. 토양(土壤)의 Ca 포화비(飽和比) 혹(或)은 Mg 포화비(飽和比)가 높으면 토양용액중(土壤溶液中)의 Ca 농도(濃度) 혹(或)은 Mg의 포화비(飽和比)가 높아 Ca우점토양(優點土壤)에서는 Ca 흡수(吸收)가 많고 Mg 우점토양(優點土壤)에서는 Mg의 흡수(吸收)가 많다. 2. Ca 포화도(飽和度)가 Mg 포화비(飽和比)가 비슷한 경우 토양용액중(土壤溶液中)의 Mg 농도(濃度)가 상대적(相對的)으로 높아 식물체중(植物體中)의 Mg 농도(濃度)가 Ca 농도(濃度)보다 상대적(相對的)으로 높아지는 경향(傾向)이었다. 3. 토양용액중(土壤溶液中) K 농도(濃度)는 Mg 포화비(飽和比)가 높은 토양(土壤)에서는 낮은 경향(頃向)이며 이로 인(因)하여 식물체(植物體) 가리함량(加理含量)도 Mg 포화도(飽和度)가 높은 토양(土壤)에서 적었다. 4. 가리증시(加里增施)는 식물체중(植物體中) K 함량(含量)을 늘리며 Ca+Mg+K에 대(對)한 K의 비(比)를 높이는 결과(結果)로 나타나서 식물체내(植物體內) Ca 혹(或)은 Mg 비(比)를 저하(低下)시켰다. 그러나 그 영향(影響)의 정도(程度)는 Mg가 Ca에 비(比)하여 민감(敏感)하였다. 5. 수도수량(水稻收量) 면(面)에서 볼때 토양중(土壤中) Ca:Mg 포화비(飽和比)는 7:3 정도(程度)가 가장 알맞은 것으로 나타났다. 6. 식물체(植物體)에 의(依)한 K의 흡수(吸收)는 $AK^+/{\sqrt{A(Ca^{{+}{+}}+Mg^{{+}{+}})$에 의(依)해서 영향(影響)은 받으나 $AK^+$ (가리활성도(加里活性度)) 자체(自體)는 Ca:Mg 비(比)에 영향(影響)을 받았다. 즉 $Mg^{{+}{+}}$ 농도(濃度)가 상대적(相對的)으로 높을수록 $AK^+$ 값은 낮아졌다.

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가정학교육 영역에서의 인구교육문제에 관한 조사연구 -선임가정학자들을 대상으로- (A Study of the Attitude of/and Problems Encountered by Senjor Home Economist Toward the Integration of Family Planning Education in the Korean Formal School System)

  • 김지화
    • 대한가정학회지
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    • 제19권3호
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    • pp.83-101
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    • 1981
  • Under the full consideration of the growing need and importance of population education in the field of home economics in Korea, the study was carried out to verify and assess the following facts on the current issues of population education of home economists who are presently engaging in teaching professions as the teachers of middle and high school and professors of college and universities by setting its primary objectives of the study as followings; 1) to assess the degree of general knowledge and attitudes of home economists toward population education in the field of home economics, 2) to verify the problems encountered in implementing population education by home economists in its field, 3) to find an existing status of previous trainings received and other activities of population education of home economists aimed at utilizing these findings as a part of reference materials when the population education is conducted in the field of home economics. In order to attain these objectives described above, the questionnaire was carefully designed to house a total of 40 questions with good combination of multiple-choice and the simple answer questions. The mail questionnaire survey was conducted by establishing teachers of home economics at middle/high schools and college/universities as Senior Home Economists(SHE) who are from public, private liberal arts and vocational schools. The rate of response observed during the survey was 45.6 percent and the findings of the survey research are as follows: 1) Examining the status of the respondents by residence and religion, it was found that 45 percent of middle & high school teachers ar.d 59. 1 percent of college professors are residing in Seoul city area and that the largest percent of them are christian in their religion. Analyzing respondents by their ages, 56 percent of middle/high school teachers are in their 30s, 45 percent of college professors are in their 40s, and 37 percent of college teachers are in their 30s. In addition, 13 percent of the total respondents are found to be unmarried. The study also revealed that 71 percent of the college professors finished Master Degree course and 82 percent of middle/high school teachers are graduated from college level lasting 4 years. Looking over the status cf major fields of respondents, 68.4 percent of middle/high school teachers are specialized in home economic education and the college professors, on the other hand, show relatively even prortion by specializing in the order of food & nutrition science, clothes & textile science and home managerial science. As far as the length of teaching experience is concerned, a relatively longer period of teaching experience is observed in the college professors in comparison with that of middle/high school teachers. In other words, 33.3 percent of middle/high school teachers are experienced in teaching from 6 to 10 years on average while 43.9 percent of college professors show more than 16 years of experience. 2) Examining the status of existing number of children cf the respondents, one boy and one daughter pattern is predominant, showing 28.5 percent in middle/high school teachers and 21.1 percent in college professors. As for the desired number of children of unmarried respondents, it is observed that 43.8 percent of middle/high school teachers desire to have one boy and one girl, and 31.3 percent of college professors want to have one child regardless of the sex. By assessing the degree of awareness of the population education through their students, it is observed that 53 percent of middle/high school teachers and 50 percent of college professors are aware of population education in some extent and that a majority of respondents took the positive attitudes toward an inclusion of family planning components into the formal school education. Another noteworthy to observe is that a total of 84.8 percent out of middle/high school teachers pointed that the population education currently conducted at schools as a part of home economics are less sufficient than it should be. 3) Analyzing the tendency as to whether the respondents were experienced in receiving population education during the time when they were students, 75 percent of college professors and 59 percent of middle/high school teachers responded negative answers in the survey. In the mean time, a total of 50 percent of the respondents replied that they began to acknowledge the importance of population education mainly through the participation of some sort of population-education orientend seminars, experienced by 40 percent of college professors and 80 percent of middle/high school teachers. 4) What it calls attention in this study was to find that 96.5 percent of middle/high school teachers and 72 percent of college professors conduct population education to some extent during their lecture hours and that more than 80 percent of them are never experienced in teaching population and family planning contents in their regular classes. It is, on the other hand, found that no more than once was the response of those who believe themselves that they are experienced in teaching these relevant components to their students. Analyzing the contents of the subjects being taught in the class, a large percent of them are found to be consisted of population and family planning contents. According to this study, the current population education through the formal school is quite inactive. Analyzing the facts, 44.9 percent of the college professors responded that the population and family planning components are quite apart from their specialization which eventually generates lack of interest in the field. 5) It is also noticed through the study that the degree of frequency of commenting on population and family planning contents during the classes was depending significantly on their specializations which means that the degree of frequency varies from a major to another. Those who majored in home managerial science was the first one, as compared to others who majored in different specializations. Glancing over the status of correlations between ages of the respondents and numbers of seminar paticipation, it is quite clear that the aged group participated more than the younger group did, and that the most highest number of participations made by college professors were those who are in 50s. In addition, it is also found that those who are aged 20s and 60s of the respondents were the group who comments least on the contents of population and family planning at their classes. The suggestions and recommendation made through this survey research are as follows. 1) No one denies that the rapid increase of population, as compared to the limited size of land and resources, will certainly affect adversly to an enhancement of individual life quality which will, eventually, bring forth the poverty of the nation. This is the reasson why we are insisting that the world population be controlled up to an optimum level with a matter of global concerns. It is our understading that the primary aim for reducing number of population is believed to be attained only by conducting the systematic and comprehensive population education through the formal schools. Therefore, the role of home economists in the field of population/family planning education is considered very importment due to the fact that an ultimate goal of population education is placed in elevating the quality of family life by having optimum number of children through family planning program. 2) It is quite clear that home economists as teachers of formal school in all level are invited to pay their attention on redefining the ultimate goal of education and that of population education. We also understant that the primary objective of population education is to change the norm and value of the clients by replenishing the students with pertinent knowledge and attitudes on population and its related problems through a sort of education in order to attain the ultimate goal for enhancing the quality of life. There is no exception in the theory of home economics. An altimate goal of home economics is to elevate the general quality of life through an establishment of value existed in daily life. Considering the relations between population education and home economics, it is quite indespensable to bandle population components as an integral part in the field of home economics. We believe, therefore, that the senior home economists positive participation in the effort population control is more needed than it has been. 3) It is also strongly urged that population education should be a part of instructor training course for home economics. In other words, the teacher of home economics should be well aware of population and its problems by teaching interrelationship between population education and home economics, needs, contents and methods of population education during the instructor training courese for home economics. In addition, the senior home economists should be encouraged through positive participation on the short term training by types of domestic and international seminar, workshop, etc. 4) We certainly believe that the population education can not sustain itself without any backing-up of information and findings' of various and comprehensive researches of natural and social sciences. Accordingly, every senior home economist is invited to exert their maximum effort to conduct systematic study with an aim to utilize these findings and information at best in population education in the field of home economics. Therefore, we consider that the development of training material is imminent in order to provide effective and efficient population education through the for training of home economies. It should be noted that these training materials must be carefully designed, tailored and developed to meet the different classes of trainees under the considerations as to whether it is easily adaptable and infusable into the curricula of every field of home economics, and it is acceptable in the degree of difficulty and quality in its contents. 5) It is true that there are many domestic and international research rapers, reports and findings in the field of population education and family planning. However, there is a tendency that the most of research papers are heavily relying on the authors intension and preferences in its expression and publication. Under these circumstances, it is urged that the home economists should aware of the growing need of the technical training in order to keep these available information and research findings reprocessed and redesigned to insure the practical application into the population education in the field of home economics in Korea.

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회사채 신용등급 예측을 위한 SVM 앙상블학습 (Ensemble Learning with Support Vector Machines for Bond Rating)

  • 김명종
    • 지능정보연구
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    • 제18권2호
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    • pp.29-45
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    • 2012
  • 회사채 신용등급은 투자자의 입장에서는 수익률 결정의 중요한 요소이며 기업의 입장에서는 자본비용 및 기업 가치와 관련된 중요한 재무의사결정사항으로 정교한 신용등급 예측 모형의 개발은 재무 및 회계 분야에서 오랫동안 전통적인 연구 주제가 되어왔다. 그러나, 회사채 신용등급 예측 모형의 성과와 관련된 가장 중요한 문제는 등급별 데이터의 불균형 문제이다. 예측 문제에 있어서 데이터 불균형(Data imbalance) 은 사용되는 표본이 특정 범주에 편중되었을 때 나타난다. 데이터 불균형이 심화됨에 따라 범주 사이의 분류경계영역이 왜곡되므로 분류자의 학습성과가 저하되게 된다. 본 연구에서는 데이터 불균형 문제가 존재하는 다분류 문제를 효과적으로 해결하기 위한 다분류 기하평균 부스팅 기법 (Multiclass Geometric Mean-based Boosting MGM-Boost)을 제안하고자 한다. MGM-Boost 알고리즘은 부스팅 알고리즘에 기하평균 개념을 도입한 것으로 오분류된 표본에 대한 학습을 강화할 수 있으며 불균형 분포를 보이는 각 범주의 예측정확도를 동시에 고려한 학습이 가능하다는 장점이 있다. 회사채 신용등급 예측문제를 활용하여 MGM-Boost의 성과를 검증한 결과 SVM 및 AdaBoost 기법과 비교하여 통계적으로 유의적인 성과개선 효과를 보여주었으며 데이터 불균형 하에서도 벤치마킹 모형과 비교하여 견고한 학습성과를 나타냈다.