• Journal of Biosystems Engineering
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• 제22권2호
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• pp.137-150
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• 1997

To investigate the feasibility of a boom sprayer in the paddy field, an experimental boom sprayer for both broadcast and directed spraying to the lower part of rice plants was developed. The droplet deposition characteristics of the boom sprayers were experimentally compared to those of power sprayer. Water sensitive papers(WSP) and a machine vision system were used to evaluate the coverage rate and droplet density. It was shown that the broadcast application by the boom sprayer was the best coverage among the tested sprayers. Coverage tate and droplet density were affected by the distance between nozzles and the sprayer ground speed, The best result was obtained when the distance of 30cm and the speed of 1.7km/hr. The directed application showed inconsistency in overall droplet distribution. The inconsistency was judged to be caused by conflict between plants and boom extenders. The power sprayer showed a very wide range of droplet size distribution, relatively larger droplets and inconsistency in cove The power sprayer was judged to be inadequate for the low-volume precision application because of inconsistency in performance and difficulty in adjusting the spraying rate. Based on the droplet coverage characteristics, it was concluded that the self-propelled boom sprayer for the broadcast application was feasible for an alternative to the power sprayer in case of low volume, precision application in paddy condition.

• 대한공업교육학회지
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• 제30권1호
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• pp.56-67
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• 2005

The purpose of this study was to examine the effects of analytic rubrics on learners' self-directed learning ability in information technology unit assessment. The experiment and control groups were 4 classes of the 2nd grade in B middle school located in Daejeon. The pretest was performed to check the group homogeneity. For the experiment design, the nonequivalent control group design as a type of quasi-experimental design was used. The experiment was composed of 5 sessions. Statistical significance was p < .05 to verify the hypothesis, and SPSS 12.0 for Windows was used for statistical treatment. The results from this study were as follows: (1) The application of analytic rubrics in information technology unit assessment affected learners' self-directed learning ability in a positive way in 4 factor's(openness, self-concept, intrinsic motivation, self-evaluation) but does not affected in 3 factor's(autonomy, creativity, problem solving). (2) The difference in sex was not a statistically significant factor in the application of analytic rubrics in information technology unit assessment. Based on the results of the experiment, two suggestions were made to promote the application of rubrics in technology education assessment. (1) Research and development of many types of rubrics for technology education are needed. (2) Systematic training of rubrics for technology teachers is needed.

• 한국초등과학교육학회지:초등과학교육
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• 제40권1호
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• pp.55-65
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• 2021

The purpose of this study was to investigate the effects of application of maker education program in school maker space on the creative problem solving ability and self-directed learning ability of elementary students. For research, we secured 18 periods of creative experience activities with 5 categories appropriate for elementary students, and integrated these activities into an elementary maker education program in school maker space. Pre and post tests were done before and after application of this maker education program to assess the changing in participants' creative problem solving ability and self-directed learning ability. The results of this study can be summarized as follows: First, the maker education program meaningfully improved the creative problem-solving abilities of elementary school students. Second, the maker education program meaningfully improved the self-directed learning abilities of elementary school students. From interview with the students, we could know that this program made the students have self-confidence and gave them favorable impression.

• 아동학회지
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• 제33권6호
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• pp.71-84
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• 2012

The purpose of this study is to analyze the relationship between decision making abilities young children and their self-directed learning abilities. A survey was carried out using 160 young children in the J region. The collected data were analyzed by Pearson correlation and multiple regression techniques using the SPSS statistics program. The conclusions are as follows : First, decision making abilities in young children exhibited a positive correlation with their self-directed learning abilities. Second, decision making abilities in young children were an influential variable in terms of their self-directed learning abilities. As a result, decision making abilities in young children were an important variable in predicting their self-directed learning abilities.

• 대한통합의학회지
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• 제9권1호
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• pp.141-150
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• 2021

Purpose : The purpose of this study was to investigate the effect of case-based learning application in human growth development classes on nursing students' problem-solving ability, self-directed learning ability, and academic self-efficacy. Methods : The research method was a self-report questionnaire before and after case-based learning for second-year nursing students who took the human growth development course at U University in K city. The collected data were statistically processed using SPSS WIN 21.0. Results : The results of the study showed that after case-based learning, problem-solving ability, self-directed learning ability, and academic self-efficacy were all significantly improved. In addition, as a result of examining the correlation between each variable after case-based learning, problem solving ability score and self-directed learning ability score (r=.54, ｐ<.01), and problem solving ability scores and academic self-efficacy scores (r=.44, ｐ<.01), were significantly correlated with self-directed learning ability scores and the academic self-efficacy reduction scores (r=.76, ｐ<.01). Conclusion : The results of this study suggested the need for various learning programs such as case-based learning to improve nursing students' problem-solving abilities and self-directed learning abilities and their application. In addition, to improve the learning self-efficacy of nursing students, a continuous and systematic study is suggested to develop and apply customized educational programs according to the learners' preferences. Since the sample group in this study was limited to one university, there were few cases and no control group, so there are limitations in generalizing the test effect, However, significant differences a were verified in the case-based learning pre-tests and post-tests.

• Korean Journal of Mathematics
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• 제9권1호
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• pp.53-60
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• 2001

We study the properties of positivity of matrices and construct useful positive matrices. As an application, we consider a directed graph with matrices such that all the associated matrices related to the positive linear functional are positive.

• 과학교육연구지
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• 제35권2호
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• pp.295-306
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• 2011

자기주도적 학습 능력의 중요성은 날로 증가하고 있다. 전통적 교수자 주도의 강의, 세미나, 토론 수업 모두 학습자의 자기주도적 학습 능력 향상에 일정한 한계를 드러내고 있다. 이러한 문제의 해결을 위해 역동적 복합 수업 모형(dynamic complex instruction model, DCIM)이 오순애(2010)에 의해 개발되었다. 본 연구에서는 DCIM을 대학원 생물 교과에 적용하였을 때, 대학원생의 자기주도적 학습 능력 향상 여부를 살펴보고자 하였다. 자기주도적 학습 능력 측정 검사 도구로는 유귀옥(1997)이 번안한 West & Bentley(1990)의 자기주도적 학습 준비도 척도를, 자기주도적 학습 능력의 하위 요인인 학습 동기 척도 측정에는 오순애(2001)가 번안한 Hayamizu (1997)의 척도를 사용하였다. 대구광역시 소재 K 대학교 2010년 1학기 2개 대학원생 생물 수업을 대상으로 DCIM이 적용되었으며, 수업 전 후에 척도를 이용한 검사가 이루어졌다. 연구 결과, 교수자 주도의 일방적 강의 수업을 실시한 통제 집단에 비해 DCIM 적용 수업이 자기주도적 학습 능력이 유의미하게 향상되었음을 확인할 수 있었다. 반면 학습 동기는 통제 집단과 실험 집단 사이에 유의미한 차이를 나타내지는 않았다. 본 연구는 대학원 수업에 DCIM의 적용이 대학원생들의 자기주도적 학습 능력 향상에 효과가 있음을 보여주는 의미 있는 결과라고 판단된다.

• 대한방사선기술학회지:방사선기술과학
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• 제45권6호
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• pp.515-522
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• 2022

The aim of the study was analyzed effect of the interaction with contents (IC), learning satisfaction (LS) and learning achievement (LA) through evaluation of the self-directed learning ability (SDLA) and immersion in learning (IL) for online learning application in the radiation therapy. A total of fifty university students who completed the radiation therapy course were be surveyed. There was significant positive correlation with the IC and the intention to continue using (ICU) in SDLA, and IC, LS, LA, and ICU in LC. The online learning application could be increase the satisfaction and achievement of radiation therapy learning.

• East Asian mathematical journal
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• 제36권2호
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• pp.273-289
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• 2020

This study introduces the process and results of developing an adaptive math learning program for self-directed learning. It presented the process and results of developing an adaptive math learning program that takes into account the level of learners using artificial intelligence. We wanted to get some suggestions on developing programs for artificial intelligence-based mathematics. The program was developed as Math4U, an application based on smart devices in the "character and expression" area for 7th grade. The Application Math4U may be used differently depending on its purpose. It is also expected to be a useful tool for providing self-directed learning to students as the basis for educational research using smart devices in a changing educational environment.

• 한국콘텐츠학회논문지
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• 제16권6호
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• pp.1-8
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• 2016

우리나라는 영재교육에서의 자기주도적 학습 능력의 신장을 매우 중요한 목표로 내세운다. 최근에는 다양한 프로그래밍을 활용한 영재 학습 프로그램이 개발되었고 이를 통해 학습자들의 자기주도적 학습 능력이 향상되기도 한다. 하지만 프로그래밍 활용 영재 학습 프로그램은 정보 영재를 대상으로 개발된 것이 대부분이다. 이에 본 연구에서는 자기주도적 학습능력의 향상을 위한 앱인벤터를 활용한 수학영재프로그램의 개발과 적용에 관해 탐구하였다. 4, 5학년으로 이루어진 초등 수학 영재 1개 학급을 대상으로 모둠별로 앱인벤터를 활용해 수학 퀴즈를 만드는 활동을 하였다. 실험 적용 후 실험집단의 내재적 동기, 자율성, 개방성 등 자기 주도적 학습 능력의 하위 요소의 사후 검사 값이 유의도 .002이하로 매우 유의하였다. 따라서 앱인벤터의 활용을 통한 수학영재프로그램의 개발과 적용은 수학 영재 학습자의 자기주도적 학습 능력의 전 영역에서 효과적이었음을 확인할 수 있었다.