• Journal of Intelligence and Information Systems
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• v.29 no.1
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• pp.41-63
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• 2023

As the online e-commerce market growing, the need for a recommender system that can provide suitable products or services to customer is emerging. Recently, many studies using the sentiment score of online review have been proposed to improve the limitations of study on recommender systems that utilize only quantitative information. However, this methodology has limitation in extracting specific preference information related to customer within online reviews, making it difficult to improve recommendation performance. To address the limitation of previous studies, this study proposes a novel recommendation methodology that applies deep learning technique and uses various linguistic factors within online reviews to elaborately learn customer preferences. First, the interaction was learned nonlinearly using deep learning technique for the purpose to extract complex interactions between customer and product. And to effectively utilize online review, cognitive contents, affective contents, and linguistic style matching that have an important influence on customer's purchasing decisions among linguistic factors were used. To verify the proposed methodology, an experiment was conducted using online review data in Amazon.com, and the experimental results confirmed the superiority of the proposed model. This study contributed to the theoretical and methodological aspects of recommender system study by proposing a methodology that effectively utilizes characteristics of customer's preferences in online reviews.

• Journal of Science Education
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• v.47 no.3
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• pp.251-262
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• 2023

In this study, we examine other factors that may contribute to the decline in students' academic performance and educational attainment. Many media reports, as well as previous studies, have suggested that virtual learning is the main reason for the decline in students' academic performance. However, the 2020 National Student Achievement Survey, which was conducted in conjunction with the COVID-19 Distance Learning Environment Student Survey, showed that students were highly satisfied with distance learning (70-80%), and the analysis of the National Assessment of Educational Achievement showed that students' academic performance had already been declining year by year since 2017, with a general downward curve. For further confirmation, we analyzed the performance of high school students on mock exams and found that their performance was not normally distributed, but rather a right-skewed U-shaped distribution with a shrinking number of medians and severe polarization. We found that this phenomenon is not simply because of the mode or quality of the virtual classroom, but to a variety of factors, including environmental influences such as care and management at home, changes in investment in private education, increased time spent on online devices while taking virtual classes at the bottom, and increased time spent watching online content, games, and videos that are not related to learning.

• Journal of Korea Society of Industrial Information Systems
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• v.22 no.2
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• pp.91-106
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• 2017

In This Study, we Analyze how the Market Orientation and Learning Orientation that can be Regarded as the Two core Factors of Small Business, Necessary for Companies to Grow Continuously Influence on Corporate Performance. This is an Empirical Study on the Influence of them. Small Companies have a Greater Impact on the Survival and Growth of Organization Commitment I Experienced that. In this Study, we Focused on the Mediating Effect of Organization Commitment when the Company's Market Orientation and Learning Orientation Influenced on the Corporate Performance as a Differentiated Element of Research. Research results have Revealed that Surprisingly, Small Companies Market Orientation and Influence on Corporate Performance. This is an Empirical Study on the Influence of them. Small Companies have a Greater Impact on the Survival and Growth of Organization Commitment I Experienced that. In this Study, we Focused on the Mediating effect of Organization Commitment when the Company's Market Orientation and Learning Orientation Influenced on the Corporate Performance as a Differentiated Element of Research. Research results have Revealed that Surprisingly, Small Companies Market Orientation and Learning Orientation had a Significant Influence on Corporate Performance. It was also Verified that Organization Commitment had Partially Mediated Effects. In Conclusion, as a Prerequisite for Small Enterprises to grow, we have to Create Market Oriented and Learning Oriented Organization and at the same time we should Strive to Ensure that all Organization Members have Attachment Relationships with their Organization. It is Understood that it must be. The Results of these Studies will be Helpful for not only Individuals who Prepare for Founding and Founded but also Start-up Related Officials.

• Journal of the Korean Home Economics Association
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• v.25 no.2
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• pp.39-54
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• 1987

One's Clothing Satisfaction, has a great influence on his role behavior in a society. Especially, as for the teacher's and the professors whose role is teaching, it can not be too emphaszed. Above all, high school girls and college women are the most likely to be influenced by their teachers' clothing behavior, to whom they pay their respect in every way. From this point of view, this study was aimed at explaining, the correlation between the teachers/professors' clothing behaviors and the learning efficiency. On clothing behaviors assessed 30 items related with the learning efficiency, selected from the instruments of preceding studies, and modified by the factors dealing with modesty, color, and design. The questionnaires were composed of two major categories: those for students and for teachers/progessors. The subjects of this study were included students and teachers/professors of high school and universities in Seoul. The data were analyzed statically by mean, standard Deviation, and F-test. The results of this study were summerized as follows; 1. The clothing behaviors of the teachers/professors influenced on the learning efficiency. Namely teachers' clothing satisfaction is in direct proportion to them teaching efficiency and students' learning efficiency. 2. Among the clothing behavior variables, modesty had a great influence on the learning efficiency, especially as for that of teachers more than professors. 3. The influence of the teachers'/professors' clothing behaviors on the learning efficiency showed no significance between high school girls and college women, but some significance between the grades of collegians. 4. As for the teachers'/professors' clothing behavior, male teachers/professors gave priority to design and female teachers/professors to modesty, color showed no significance between them irrespective of age. 5. As for the clothing behavior variabels, both the teachers/professors and the students showed some significance. In class the teachers/professors highly responded to their own clothing behaviors than the students. 6. According to priority the most favorable clothing colors for male teachers/professors are navy blue, gray, indigo blue, and black, and the most disgusting ones red, mud yellow, violet, pink, and green. The most favorable clothing colors for female teachers/professors are beign, white, pale yellow, and black, and the most disgusting ones red, mud yellow, and yellow and yellow according to priority. It is that teachers/professors should wear modestly and in color harmony to invite the desirable students' will to study. Teachers'/professors' colorful appearance and heavy toilet bring about a drop in the students' will to study.

• The Journal of the Convergence on Culture Technology
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• v.4 no.4
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• pp.207-212
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• 2018

The objective of this study was to investigate the effect of undergraduates' self-directed learning on the school life satisfaction and interpersonal relation ability. For this purpose, 341 undergraduates were targeted and analyzed. The results of the study are as follows. First, significant positive correlation was found in self-directed learning, school life satisfaction, and interpersonal relation abilities. Second, as a result of analyzing school life satisfaction, a sub-factor of self-directed learning, all of gender, grade, and age affected. In addition, sub-factors such as study confidence, study passion, study responsibility seemed to affect positively significantly in order. Third, as a result of analyzing the effect on interpersonal relation skills of self-directed study, there was no significant relation in gender, grade, and age. However, there was significant positive effect in study responsibility, study passion, and study confidence in order. Based on the results of this study, it was confirmed that school life satisfaction and interpersonal relation abilities are closely related to self-directed learning. This is significant in that to revitalize institutions such as educational service, study support for students, self-directed learning programs development in education field at the university, etc. are required.

• (The) Korean Journal of Educational Psychology
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• v.32 no.1
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• pp.183-205
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• 2018

This study aims to demonstrate the longitudinal structural relationship between learner-centered instruction, learning motivation, growth beliefs, and academic stress. In particular, this study was carried out to focus on the structural effect of the related variables using data from the 3rd to 5th year of the Gyeonggi Education Panel Study. Results showed that while learner-centered instruction positively predicted both intrinsic and extrinsic motivation of learners, it predicted the former better. In addition, learner-centered instruction influenced academic stress through motivation, both intrinsic and extrinsic motivation were found to increase stress. Further, growth beliefs mediated motivation with learner-centered instruction; specifically, learner-centered instruction influenced learners' positive beliefs about growth, and learners who had growth beliefs had intrinsic motivation. At the same time, external motivation tended to be lower for learners who believed in the possibility of growth. Finally, the perceptions of learner-centered instruction affected academic stress through changes in growth beliefs. However, the other 3 factors (learner-centered instruction, learning motivation, and academic stress) were not statistically significant. In conclusion, learner-centered instruction was able to mitigate academic stress, demonstrating that this relationship is influenced by changes in growth beliefs rather than learning motivation, as previously studied. These results suggest that learners' perceptions and beliefs contribute to not only intrinsic motivation but also academic stress. Furthermore, it is suggested that learners need to change their learning environments in positive ways.

• English Language & Literature Teaching
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• v.18 no.1
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• pp.91-114
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• 2012

The purpose of this study is to investigate teachers' perspectives on content-based instruction (CBI) in English at a higher education in Korea. Based on the assumption that content-based instruction programs could be successful if teachers were actively involved not only in transmitting the content knowledge but also in students' development in the second or foreign language competence, the study explores teachers' treatments of language in relation to the students' language development in CBI classes. Research questions were related to five areas such as (1) the goals of CBI programs, (2) difficulties in CBI classes, (3) the use of native language, (4) teaching strategies and techniques, and (5) factors that affect the success of the CBI programs. Data gathered from 24 college instructors from a large university located in the metropolitan city of Korea. Results of the study indicated that college instructors of CBI programs had keen interest in developing students' language competence, experienced difficulties in designing course syllabus for mixed leveled group of students, rarely used Korean in class and used successful teaching strategies. Also factors needed to improve the CBI programs were recommended at the end of the study. Results of the study implied that teachers needed to be more aware of the students' learning process of English and to be more communicative with students in English in class. Further studies were needed in relation to the CBI courses for students of different age levels.

• KIPS Transactions on Software and Data Engineering
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• v.2 no.4
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• pp.219-226
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• 2013

Feature selection is the one of important issues in the field of machine learning and pattern recognition. It is the technique to find a subset from the source data and can give the best classification performance. Ie, it is the technique to extract the subset closely related to the purpose of the classification. In this paper, we experimented to select the best feature subset for improving classification accuracy when classify success and failure factors in software reuse. And we compared with existing studies. As a result, we found that a feature subset was selected in this study showed the better classification accuracy.

• The Journal of Asian Finance, Economics and Business
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• v.8 no.4
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• pp.529-538
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• 2021

This article aims to describe the institutional structuring strategy of independent smallholders in accelerating sustainable economic development, by taking the example of the cow-coconut integration system (SISKA) problem in Sialang Palas Village, Riau. The method used identified stakeholders related to SISKA; the stakeholder's goals and interests, farmers' social and institutional bases, and self-help farmer socio-economic networks. First, identification of various factors through strengths, weaknesses, opportunities, and threats (SWOT) analysis techniques. Second, through the Modern Political Economy analysis technique. Third, imparting knowledge and skills to the farmers and village officials through a collective learning process in utilizing natural resource waste and social resources. The results showed that the farmer management strategy in the reform era started by clustering the interests of farmers. The dynamics of structuring group relations between the chairman and members with farmers outside the group are the basis for strengthening the local ideology of independence in the future. This institutional structuring strategy that focuses on access to farm power in the village decision-making process encourages a more integrated work of farmer organizations. The analysis above shows that the independent smallholder institutional engineering through regulation, organization, and resources are determined by the farmer household economic factors and the application of the value of local wisdom.

• ETRI Journal
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• v.44 no.4
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• pp.654-671
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• 2022

Accidental falls frequently occur during activities of daily living. Although many studies have proposed various accident detection methods, no high-performance accident detection system is available. In this study, we propose a method for integrating data and accident detection algorithms presented in existing studies, collect new data (from two stunt performers and 15 people over age 60) using a developed wearable device, demonstrate new features and related accident detection algorithms, and analyze the performance of the proposed method against existing methods. Comparative analysis results show that the newly defined features extracted reflect more important risk factors than those used in existing studies. Further, although the traditional algorithms applied to integrated data achieved an accuracy (AC) of 79.5% and a false positive rate (FPR) of 19.4%, the proposed accident detection algorithms achieved 97.8% AC and 2.9% FPR. The high AC and low FPR for accidental falls indicate that the proposed method exhibits a considerable advancement toward developing a commercial accident detection system.