• ETRI Journal
• /
• v.33 no.5
• /
• pp.720-730
• /
• 2011

Opinion mining involves the analysis of customer opinions using product reviews and provides meaningful information including the polarity of the opinions. In opinion mining, feature extraction is important since the customers do not normally express their product opinions holistically but separately according to its individual features. However, previous research on feature-based opinion mining has not had good results due to drawbacks, such as selecting a feature considering only syntactical grammar information or treating features with similar meanings as different. To solve these problems, this paper proposes an enhanced feature extraction and refinement method called FEROM that effectively extracts correct features from review data by exploiting both grammatical properties and semantic characteristics of feature words and refines the features by recognizing and merging similar ones. A series of experiments performed on actual online review data demonstrated that FEROM is highly effective at extracting and refining features for analyzing customer review data and eventually contributes to accurate and functional opinion mining.

• Journal of Korean Academy of Nursing Administration
• /
• v.14 no.3
• /
• pp.229-240
• /
• 2008

Purpose: To develop the patient classification system based on the resource utilization for reimbursement of long-term care hospitals in Korea. Method: Health Insurance Review & Assessment Service (HIRA) conducted a survey in July 2006 that included 2,899 patients from 35 long-term care hospitals. To calculate resource utilization, we measured care time of direct care staff (physicians, nursing personnel, physical and occupational therapists, social workers). The survey of patient characteristics included ADL, cognitive and behavioral status, diseases and treatments. Major category criteria was developed by modified delphi method from 9 experts. Each category was divided into 2-3 groups by ADL using tree regression. Relative resource use was expressed as a case mix index (CMI) calculated as a proportion of mean resource use. Result: This patient classification system composed of 6 major categories (ultra high medical care, high medical care, medium medical care, behavioral problem, impaired cognition and reduced physical function) and 11 subgroups by ADL score. The differences of CMI between groups were statistically significant (p<.0001). Homogeneity of groups was examined by total coefficient of variation (CV) of CMI. The range of CV was 29.68-40.77%. Conclusions: This patient classification system is feasible for reimbursement of long-term care hospitals.

• The Journal of the Korea Contents Association
• /
• v.22 no.10
• /
• pp.59-73
• /
• 2022

Open peer review intends to help review a manuscript in a transparent and accountable manner, opening up the identity of a reviewer and authors in a scholarly journal. Although some research about open peer review, for example, authors' understanding of open peer review, exists, research about editors' perspectives of a scholarly journal in Korean domestic science and technology fields has not been found. Editors' views may include whether an academic journal plans to adopt open peer review, when they might adopt it, or what the possible benefits, challenges, and issues in adopting open peer review would be. This paper presents a survey scheme, data, and analysis of Korean editors' perspectives on open peer review. Specifically, we designed the online survey questionnaire, collected the survey data from journal editors, and analyzed the survey results to explore editors' understanding of open peer review. We then compared our research with previous work, such as our Focused Group Interview and other similar domestic and foreign analysis. This study result is expected to help make an open peer review policy for public institutes to provide essential services for scholarly journals, including a scholarly peer review system. Academic society may also get some insights in adopting the open peer review method in the peer-review process.

• The Journal of KAIRB
• /
• v.2 no.1
• /
• pp.1-5
• /
• 2020

The U.S. Department of Health and Human Services and fifteen other Federal Departments and Agencies have issued final revisions to the Federal Policy for the Protection of Human Subjects (the Common Rule, 45 CFR 46, Subpart A). The Common Rule was initially promulgated in 1991 and amended in 2005. The Final Rule to update the current regulations was published in the Federal Register on 19 January 2017. The final compliance date of the revised Common Rule including the cooperative research requirement is effective on 20 January 2020 after twice to delay. The revised Common Rule aims to make more effective conduct of minimal risk research reflecting modern research activities and recognize evolving technologies, including mobile technologies, internet, and the growth in computing power. The revisions to the Common Rule were based on a variety of sources of public, stakeholder, and expert comments. The author summarized the key changes and the implications to Korean human research regulations.

• The Journal of Information Systems
• /
• v.32 no.4
• /
• pp.29-50
• /
• 2023

Purpose The impact of online reviews is widely acknowledged, with extensive research focused on text-based reviews. However, there's a lack of research regarding reviews in video format. To address this gap, this study aims to explore the connection between company-sponsored product review videos and the extent of directive speech within them. This article analyzed viewer sentiments expressed in video comments based on the level of directive speech used by the presenter. Design/methodology/approach This study involved analyzing speech acts in review videos based on sponsorship and examining consumer reactions through sentiment analysis of comments. We used Speech Act theory to perform the analysis. Findings YouTubers who receive company sponsorship for review videos tend to employ more directive speech. Furthermore, this increased use of directive speech is associated with a higher occurrence of negative consumer comments. This study's outcomes are valuable for the realm of user-generated content and natural language processing, offering practical insights for YouTube marketing strategies.

• Journal of Acupuncture Research
• /
• v.19 no.3
• /
• pp.138-155
• /
• 2002

Objective : The purpose of this study is to work on the problems and on the direction of the study regarding the evidence-based study of Acupuncture. Methods : We reviewed the PubMed electronic database. Eight articles of systematic review without meta-analysis and six articles without meta-analysis were selected. Results : In the study of eight articles of systematic review without meta-analysis, there were two articles on effectiveness of acupuncture and one on non-effectiveness of acupuncture. Four articles were about the changes according to the quality of randomized controlled trials. Also, one article was about the side-effect of acupuncture. In the study of six articles of systematic review with meta-analysis, there were two articles on Odds Ratio, two on Relative Risk, one on number-needed-to-treat, and two on 18 predefined methodological criteria. Conclusion : As the quality of RCTs was high, positive response decreased and as the quality of RCTs was low, positive response increased. For the study of evidence-based acupuncture, it is necessary that we conduct research on well-planned placebo acupuncture, large sample size, statistical method, method of searching and assessing literature and method of meta-analysis.

• The Journal of Korean Society for School & Community Health Education
• /
• v.10 no.1
• /
• pp.123-140
• /
• 2009

Objectives: This literature review was conducted to understand overall research trend and change in school health education during the past 20 years and to identify major outcomes and future directions of research. Methods: Descriptive literature review was conducted for school health education in Korea. A total of 117 peer-reviewed journal articles and thesis published between 1900 and 2008 (for 19 years) conducted in school were finally included in this review process. The research setting should be elementary, middle, or high schools and the major topic of the research should health education for students. Results: Research in elementary school was 38.0% which was greater than research in middle or high school setting. Surveyor intervention research was slightly increased in 2000s. General health and other review were the most frequently employed topics in 1990s' research and general health, smoking, and safety were in 2000's research, which implied that recently research specified its topics more than 1990s' research. Recently research was developed in intervention model comparing with 1990s' research. Research using experimental or quasi -experimental design seems having less intervention effects than the research using nonexperimental design. Conclusions: It is necessary that health education research in school focuses more in students' interest, participation, and factors related to intervention effects from now on.

• Journal of The Korean Association For Science Education
• /
• v.25 no.1
• /
• pp.57-77
• /
• 2005

This review is aimed at the understanding of learning in field-trips relating to education in outdoor activities. The review specifically concerns what studies have been undertaken by seeking evidence from research published between 1950 and 2004. The review indicates three common arguments on learning during field-trips. First, the learning in an informal learning environment based on first-hand experiences is most significant when it has meaning for the learner from field-trips. Second, learning aims and strategies in field-trips have evolved along with world-wide concerns towards the environment. Third, the experiences from field-trips can impact significantly on students' cognitive and affective learning. However, the research of field-trip experiences from outdoor activities has focused on learning outcomes far more than on the learning characteristics which facilitate students' learning. Therefore, further study is required, which can provide clear evidence on how such learning characteristics through field-trips can help studentsto successfully attain educational goals.

• Journal of Distribution Science
• /
• v.22 no.3
• /
• pp.113-124
• /
• 2024

Purpose: This study is a quantitative study and analyzes the effect of evaluating the extreme and usefulness of product reviews on sales performance by using text mining techniques based on product review big data. We investigate whether the perceived helpfulness of product reviews serves as a mediating factor in the impact of product review extremity on sales performance. Research design, data and methodology: The analysis emphasizes customer interaction factors associated with both product review helpfulness and sales performance. Out of the 8.26 million Amazon product reviews in the book category collected by He & McAuley (2016), text mining using natural language processing methodology was performed on 300,000 product reviews, and the hypothesis was verified through hierarchical regression analysis. Results: The extremity of product reviews exhibited a negative impact on the evaluation of helpfulness. And the helpfulness played a mediating role between the extremity of product reviews and sales performance. Conclusion: Increased inclusion of extreme content in the product review's text correlates with a diminished evaluation of helpfulness. The evaluation of helpfulness exerts a negative mediating effect on sales performance. This study offers empirical insights for digital market distributors and sellers, contributing to the research field related to product reviews based on review ratings.

• Journal of Preventive Medicine and Public Health
• /
• v.56 no.1
• /
• pp.12-20
• /
• 2023

Quantitative and qualitative research explore various social phenomena using different methods. However, there has been a tendency to treat quantitative studies using complicated statistical techniques as more scientific and superior, whereas relatively few qualitative studies have been conducted in the medical and healthcare fields. This review aimed to provide a proper understanding of qualitative research. This review examined the characteristics of quantitative and qualitative research to help researchers select the appropriate qualitative research methodology. Qualitative research is applicable in following cases: (1) when an exploratory approach is required on a topic that is not well known, (2) when something cannot be explained fully with quantitative research, (3) when it is necessary to newly present a specific view on a research topic that is difficult to explain with existing views, (4) when it is inappropriate to present the rationale or theoretical proposition for designing hypotheses, as in quantitative research, and (5) when conducting research that requires detailed descriptive writing with literary expressions. Qualitative research is conducted in the following order: (1) selection of a research topic and question, (2) selection of a theoretical framework and methods, (3) literature analysis, (4) selection of the research participants and data collection methods, (5) data analysis and description of findings, and (6) research validation. This review can contribute to the more active use of qualitative research in healthcare, and the findings are expected to instill a proper understanding of qualitative research in researchers who review qualitative research reports and papers.