• Journal of Korea Artificial Intelligence Association
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• 제1권2호
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• pp.21-25
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• 2023

The purpose of this study was to compare the performance using multiple regression models to predict the energy consumption of steel industry. Specific independent variables were selected in consideration of correlation among various attributes such as CO2 concentration, NSM, Week Status, Day of week, and Load Type, and preprocessing was performed to solve the multicollinearity problem. In data preprocessing, we evaluated linear and nonlinear relationships between each attribute through correlation analysis. In particular, we decided to select variables with high correlation and include appropriate variables in the final model to prevent multicollinearity problems. Among the many regression models learned, Boosted Decision Tree Regression showed the best predictive performance. Ensemble learning in this model was able to effectively learn complex patterns while preventing overfitting by combining multiple decision trees. Consequently, these predictive models are expected to provide important information for improving energy efficiency and management decision-making at steel industry. In the future, we plan to improve the performance of the model by collecting more data and extending variables, and the application of the model considering interactions with external factors will also be considered.

• 영어어문교육
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• 제17권2호
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• pp.93-114
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• 2011

The aim of this study is twofold. First, this study aimed to explore how Korean university students' English learning motivation is related to their English listening proficiency and study time. Second, it attempted to interpret the English learning motivation linking the two different motivation theories: self-determination theory and L2 motivational self system. The constructs of the students' L2 learning motivation were investigated with the data obtained through the questionnaire from 122 sophomore students. A factor analysis was conducted to extract the major factors of motivation. As a result, 6 factors were extracted: Intrinsic Pleasure, Identified Value Regulation, Intrinsic Accomplishment, Introjected Regulation, External Regulation, and Identified Regulation. The Interrelatedness among the assessment results on the L2 listening proficiency (pre and post test), listening study time, and motivation factors was measured by correlation coefficients. The statistical results indicated that pre-test scores were significantly related to Identified Regulation and Identified Value Regulation toward English learning, and post-test results had significant correlation with Intrinsic Accomplishment and Identified Regulation. However, no motivation subtypes showed statistical association with the students' listening study time. The results were attempted to be interpreted both under L2 motivational self system and self-determination framework to better illuminate the motivation theory with more explanatory power.

• 영어어문교육
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• 제18권1호
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• pp.115-132
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• 2012

In order to confirm ecological validity of D$\ddot{o}$rnyei's second language motivational self, the present study investigated 495 South Korean secondary school students' L2 learning motivation and motivated behavior by using a questionnaire survey. The participants' ideal L2 self, ought-to L2 self, integrativeness, and instrumentality were examined and compared to identify which motivational factor had the most effect on their motivated L2 learning behavior. Among Korean secondary school students, the concept of integrativeness was replaced with the ideal L2 self as a more appropriate concept for understanding Korean secondary school students' L2 learning motivation. As for instrumentality, promotional aspects demonstrated a significant correlation with both the ideal and ought-to L2 selves, whereas preventional aspects showed a relatively high correlation with the ought-to L2 self. The ideal L2 self had the most impact on the motivated behavior, and the ideal L2 self and ought-to L2 self reflected the students' different motivational characteristics. It is suggested that D$\ddot{o}$rnyei's (2005, 2009) L2 motivational self system can be a better psychological model than Gardner's (1985) socio-educational model for understanding Korean secondary school students' L2 learning motivation.

• 기본간호학회지
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• 제17권1호
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• pp.82-89
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• 2010

Purpose: The purpose of this study was to compare nursing students before using problem-based learning and after the experience in: class satisfaction, tendency to critical thinking, learning attitude and motivation. Method: The data were collected on March 20 and June 5, 2008. The PBL study was given for 15 weeks from March through June involving 216 junior nursing students. To test effects of PBL, a one group pretest-posttest design was used. Statistical analysis was performed with SPSS 13.0. Paired t-test, $x^2$-test, and Pearson correlation coefficient were performed. Results: The results are summarized as follows: Following PBL, the students scored significantly higher on the class satisfaction (t=-3.321, p= .001), tendency to critical thinking (t=-2.218, p= .034), learning attitude (t=-2.910, p= .004) and motivation (t=-4.407, p<.001). The Pearson correlation coefficients among the three variables were significantly positive. Conclusion: This study contributes to our understanding of outcomes from the PBL approach. The students undertaking PBL showed that they developed a more positive attitude with their educational experience. Also, students' tendency to think critically improved through the use of the PBL approach.

• 한국간호교육학회지
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• 제10권2호
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• pp.271-277
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• 2004

Purpose: The purpose of this study was to identify the relationship of clinical competency and self-directed learning in nursing students. Method: This study was conducted at two nursing colleges with students in a 2 year undergraduate nursing program. Data were collected from 182 students by means of self reporting questionnaires from October 1 to October 8, 2004. The data were analyzed by SPSS 10.0 PC programs using descriptive statistics, one-way ANOVA, Pearson correlation coefficient. Result: The questionnaire of students' clinical competency consisted of nineteen items based on a five point summated rating scale and was categorized into six subscales by factor analysis. The six subscales are nursing process, major nursing intervention, education for clients, observation and physical examination, and fundamental nursing. The more adaptable to major, the higher clinical competency (F= 3.406, p= .035) and self-directed learning (F= 7.444, p= .001). There was a positive correlation between students' clinical competency and self-directed learning (r= .367, p= .001). Conclusion: we concluded that future research should explore strategies for the development of self-directed learning to improve clinical competency of nursing students.

• 동의신경정신과학회지
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• 제19권2호
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• pp.195-207
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• 2008

Objective: The purpose of this study was to compare satisfaction of practice and clinical skill in different participation learning and observation learning, and to offer the basic data to promote quality of nursing education. Method: The study used a quasi-experimental, nonequivalent control group post-test design. The subjects were 62 nursing students of K college in Jeonbuk, and the period of data gathering was limited from 19 Nov. 2006 to 30 Nov. 2006. Experience group was taught by hand-on education and control group was taught by conventional education. The instrument tools included self-efficacy, satisfaction of practice and clinical skill. The collected data were analyzed by SPSS-PC programme. Result: The results of this study were as follows: There was statistically a significance difference between the two group about satisfaction of practice(t=2.011 p=.043), and clinical skill(t=11.997, p=.000). Self-efficacy showed a significantly positive correlation with satisfaction of practice(r=.476, p=.000) and clinical skill(r=.178, p=.014). Also, satisfaction of practice showed a significantly positive correlation with clinical skill(r=.l82, p=.000). Conclusion: In conclusion, this study suggests that hand-on education is an effective learning method to nursing students. By utilizing hand-on education, makes nursing students plan self-directed nursing performance and improve their clinical skills.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1993년도 하계학술대회 논문집 A
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• pp.254-257
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• 1993

This paper presents a new method to implement Hebbian learning method on artificial neural network. In hebbian learning algorithm, complexity in terms of multiplications is high. To save the chip area, we consider a new learning circuit. By calculating similarity, or correlation between $X_i$ and $O_i$, large portion of circuits commonly used in conventional neural networks is not necessary for this new hebbian learning circuit named COR. The output signals of COR is applied to weight storage capacitors for direct control the voltages of the capacitors. The weighted sum, ${\Sigma}W_{ij}O_j$, is realized by multipliers, whose output currents are summed up in one line which goes to learning circuit or output circuit. The drain current of the multiplier can produce positive or negative synaptic weights. The pass transistor selects eight learning mode or recall mode. The layout of an learnable six-neuron fully connected Hopfield neural network is designed, and is simulated using PSPICE. The network memorizes, and retrieves the patterns correctly under the existence of minor noises.

• 한국임상보건과학회지
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• 제10권1호
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• pp.1569-1577
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• 2022

Purpose: This study was conducted to investigate academic self-efficacy, metacognition and major satisfaction which influence learning flow in nursing students. Method: The subjects of this study were 239 nursing students in D college. Structured questionnaire was self-administered from May 3 to 30, 2021. The date was analyzed by t-test, ANOVA, Pearson'correlation coefficients, stepwise and multiple regression using SPSS/WIN 22.0. program. Results: In academic self-efficacy, there were significant differences in age. In metacognition, there were significant differences in age, school record. There was a statistically positive correlation between learning flow and academic self-efficacy(r=.211, p=.001), metacognition(r=.357, p<.001), major satisfaction(r=.281, p<.001). The factors influencing learning flow were metacognition(t=.682, p<.001), major satisfaction(t=2.147, p=.023)Multiple regression analysis description is 61.2%. Conclusion: To improve the learning outcomes for nursing students, it is necessary to develop teaching program and curriculum for increasing, metacognition and major satisfaction.

• 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.

• 한국조리학회지
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• 제16권3호
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• pp.130-146
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• 2010

본 연구는 전문대 호텔 외식조리 관련학과 학생들의 일반적 특성에 따른 학습동기와 자기조절학습능력의 차이를 알아보고, 학습동기와 자기조절학습능력의 상관관계를 알아보고자 하였다. 조사는 대구지역의 3개 전문대 호텔 외식조리 관련학과 학생 300명을 대상으로 실시하였으며, 267부를 최종분석에 사용하였다. 먼저 학습동기에 대해 설펴보면, '졸업 후 취업'이라는 동기가 강한 학생은 20~24세로 나타났고, '학습의 기쁨'에 대한 동기는 연령이 높을수록 강해지는 것으로 나타났다. 아울러 '졸업 후 취업', '대학생활의 즐거움'의 동기가 높은 학생이 낮은 학생보다 자격증을 더 많이 취득한 것으로 나타났다. 자기조절 학습능력은 대체로 여학생이 남학생보다 높고, 학년과 연령이 높을수록 더 높게 나타났으며, 현장 실습 경험이 있는 학생이 없는 학생보다 높은 것으로 나타났다. 아울러 '인지전략', '메타인지 전략', '성취가치'의 수준이 높은 학생이 낮은 학생보다 취득한 자격증이 더 많은 것으로 나타났다. 학습동기와 자기조절학습능력의 상관관계는 학습동기 중 '무동기'를 제외하고는 긍정적인 상관관계를 보였다. '무동기'는 자기조절학습능력의 모든 요인과 부정적인 상관관계가 나타났다.