• 대한원격탐사학회지
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• 제37권3호
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• pp.367-378
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• 2021

야적퇴비는 대표적인 축산계 비점오염원으로 강우로 인해 수계로 유입될 경우 야적퇴비에 포함된 인과 질소 등의 영양염류가 하천 수질에 악영향을 미칠 수 있다. 이에 본 논문에서는 무인항공기 영상과 딥러닝 기반의 의미론적 분할 기법을 활용한 야적퇴비 탐지 방법을 제안한다. 연구지역에서 취득한 39개의 정사영상을 토대로 Data Augmentation을 통해 약 30,000개의 데이터를 확보하였다. 취득한 데이터를 U-net을 기반으로 개발된 의미론적 분할 알고리즘에 적용시킨 후 OpenCV의 필터링 기법을 적용하여 정확도를 평가하였다. 정확도 평가 결과 화소정확도는 99.97%, 정밀도는 83.80%, 재현율은 60.95%, F1- Score는 70.57%의 정확도를 보였다. 정밀도에 비해 재현율이 떨어지는 것은 정성적으로 보았을 때 전체 이미지에서 가장자리에 작은 비율로 야적퇴비 픽셀이 존재하는 경우 과소추정되었기 때문이다. 향후 추가적인 데이터셋과 RGB 밴드 이외의 추가 밴드를 조합한다면 모델 정확도를 향상시킬 수 있을 것으로 판단된다.

• Journal of the Korean Data and Information Science Society
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• 제9권1호
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• pp.57-62
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• 1998

The minimum number of samples for the measurement of plant characteristics of major crops were calculated from the data obtained from the field experiments on rice, barley, wheat, soybean and sweet potato conducted by Kyungpuk Rural Development Administration.

• 한국간호교육학회지
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• 제12권2호
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• pp.170-177
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• 2006

Purpose: This study was performed to identify the relationship between self-esteem and satisfaction in major of nursing students. Methods: Data were collected from the 10th to the 14th of April in 2006, from 281 nursing students in Jeollabuk-Do area. The collected data were analysed by using the SPSS WIN 11.0. Results: The results of this study were as followings: 1) The mean score for self-esteem was $2.89({\pm}.42)$, self-esteem was significantly different according to the general characteristics of grade(F=4.718, p=.010), satisfaction of pocket money(F=11.241, p=.000), satisfaction of present life(F=9.875, p=. 000) and hope for the employment field(F=2.583, p=.026). 2) The mean score for satisfaction in major was $3.79({\pm}.49)$, satisfaction in major was significantly different according to the general characteristics of satisfaction of pocket money(F=5.280, p=.006), motivation of entrance(F=7.384, p=.000), satisfaction of present life(F=27.000, p=.000), hope for the employment field(F=3.019, p=.011) and one of family (t=2.416, p=.017). 3) There was a significant correlation between self-esteem and satisfaction in major(r=.353, p=.000). 4) The most important variables affected satisfaction in major could explain a total 27.9%, were accounted for 22.7% in the satisfaction of present life and 5.2% in the self-esteem by the stepwise multiple regression analysis. Conclusion: As a result, self-esteem was correlated with satisfaction in major in nursing students. Therefore we need to develop various self-esteem program for nursing students.

• 한국문헌정보학회지
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• 제49권2호
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• pp.355-379
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• 2015

본 연구는 문헌정보학 전공 학생들의 현장실습에서 경험하고 학습하는 여러 구성요인 중 실습만족도에 영향을 미치는 요인들을 학제별로 분석하고 그 영향관계를 고찰하여, 문헌정보학 전공 현장실습의 바람직한 방향을 제시하고자 한다. 도서관 및 정보서비스 제공기관 현장실습을 경험한 전국 2년제 문헌정보과 2학년 90여 명 및 4년제 문헌정보학과 4학년 80여 명을 대상으로 설문조사를 실시한 결과, 2년제와 4년제 학제 전부 실습만족도 구성항목 중에서 실습지도자에 대한 만족도가 가장 높았고, 실습사전준비에 대한 만족도가 가장 낮은 것으로 나타났다. 다중회귀분석을 사용하여 학제별 현장실습 만족도에 영향을 미치는 요인을 조사한 결과, 2년제 학생의 현장실습만족도에 영향을 미치는 주요인은 '전공만족도'와 '대인관계' 요인이었으며, 4년제 학생은 '전공만족도', '개인실습 경험' 요인이 현장실습만족도에 유의한 영향을 끼치는 요인으로 분석되었다. 결론적으로 문헌정보학 대학생의 현장실습만족도를 높이기 위해서는 전공만족도, 대인관계, 개인실습 경험 등의 영향요인을 기초로 한 중재 프로그램 개발이 필요하다.

• 대한통합의학회지
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• 제2권3호
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• pp.23-30
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• 2014

Purpose : The purpose of this study was to grasp the general status and trend of the driving rehabilitation research focusing on interested topics, study subjects, therapeutic approaches, study designs, etc. Methods : It targeted 18 papers published in the RISS (Research Information Service System) from 2000 to 2014, and performed a descriptive statistical analysis by classifying these papers to topics, study subjects, study forms, study designs, study fields, and researchers. Results : As a result of the analysis, for the study form in the driving rehabilitation field, the rate of experimental papers was 61.1%, the highest. Major study subjects turned out to be occupational therapists, the disabled, and the aged, in order. For the study quality and design, the rate of survey and non randomized-single experimental study, which correspond to stage IV, was the highest, and the general study quality was found to be low. For the study field, the rates of the roles and recognition of occupational therapists, evaluation on driving ability of the disabled, and institutional improvement and future measures were the highest, each of which being 16.7%. Conclusion : Through this study, major study subjects and study quality in the driving rehabilitation field could be grasped, and it could be found that for development of the driving rehabilitation field, higher quality researches on more various study subjects would be needed in the future.

• 한국철도학회논문집
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• 제9권6호
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• pp.746-752
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• 2006

The major objective of this study is to investigate the dynamic behavior evaluation of split PC sleepers for railway turnout by the field test. In railway engineering, a turnout is necessary to allow a vehicle to move from one track to another. So, turnout is required very complex railway technologies such as lolling stock, track. In reference to conventional line speed-up and improvement railway, accurate assembly of turnout affects travel ins qualify of turnout area and running safety. Because of heavy weight and a large volume of the long sleeper used to turnout and car limit, transport and the prerequisite for trouble-free transport of the factory pre-assembled major turnout components is achieved through division of long sleepers. The one of the advantages for using a split sleeper is to reduce the dynamic vibration according to the information of developed nations. Therefore, we investigate the characteristic of dynamic behaviors of split sleepers which are adopted for the first time to improve performance of turnout From the field test results of the split sleeper, it is evaluated that the modification of weight, material and stiffness compared with wood sleeper is very effective for the ballast safety. However, the decrease in vibration of split sleeper was not found out.

• 대한금속재료학회지
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• 제48권2호
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• pp.180-186
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• 2010

For the application of field emission display (FED), it is essential to develop a carbon nanotube (CNT) cathode with high emission current density. In this study, we developed and demonstrated a post-heat treatment (PHT) process to improve field emission properties of CNT cathodes. Since the PHT is intended to burn out organic materials covering the CNTs, the PHT was carried out by heating samples at a high temperature in an atmosphere. The PHT process is applied for samples processed by surface treatment with an adhesive tape. Compared to samples prior to the PHT, samples after the PHT at $360^{\circ}C$ showed about 17% improvement in emission current density. The major reason for the increased current density is mainly the increased aspect ratio of the CNTs because of the removal of the adhesive organic residues covering the CNTs, which were attached on the CNT surfaces during the surface treatment using the adhesive taping method.

• 한국융합학회논문지
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• 제9권7호
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• pp.205-211
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• 2018

본 연구의 목적은 융합적 인재를 필요로 하는 4차 산업혁명시대를 대비하여 다방면 전공 분야의 핵심적인 내용을 실무 융합적으로 교육시킬 수 있는 대학교육 전략을 제안하는 것이다. 먼저, 교육 과정에 기존의 전공영역과 교양영역 이외에 융합영역을 새롭게 신설하고, 둘째, 기업실무와 연계하여 타 전공학생들만을 위한 전공교과목인 융합교과목을 개설하고, 셋째, 융합교과목을 4개씩 묶어서 융합모듈의 형태로 하여 하나의 독립된 교육과정으로 개설한다. 지방사립대학인 D대학에서는 2016년도부터 이러한 융합모듈 교육을 실시하였으며 평균 수강생 수, 수강률 및 강의만족도 등에서 만족스러운 결과를 얻었다. 이러한 융합모듈들을 다양하게 조합하면 지역 기업이 요구하는 기업설계맞춤전공을 저비용으로 수월하게 창출할 수 있다.

• 한국환경교육학회지:환경교육
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• 제8권1호
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• pp.122-137
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• 1995

The Environmental Education(E.E.) is very important field in Elementary and Secondary School. And the first important problem of E.E. in school is no special teacher. This thesis is a study on the system of E.E. major in the graduate school of education. 1. The aims of E.E. major are training of E.E. teacher and developing research of E.E. 2. The curriculum of E.E. major is consisted of E.E. theory and E.E. content. 3. The student of E.E. major is admited a university graduate of social science and natural science department. 4. The professor of E.E. major is organized a specialist of E.E.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 1997년도 정보화시공.지반굴착위원회 공동학술발표회 논문집
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• pp.59-92
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• 1997