• Knowledge Management Research
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• v.19 no.4
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• pp.1-17
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• 2018

Hotel consumers tend to rely on online reviews to reduce the risk to hotel products when they book hotel rooms because hotel products are high-risk products due to their intangibility. However, the development of ICT has caused information load, and it is an important issue to be perceived as useful information to consumer because a large amount of information complicates the decision making process of consumers. Drawn from Heuristic-Systematic Model(HSM), the present study explored the role of heuristic and systematic cues composing an online review influencing consumers' perception of hotel online reviews. More specifically, this study identified reviewers' identity, level of the reviewer, review star ratings, and attached hotel photo as heuristic cue, while review length, cognitive level of review and negativity in review as systematic cues. The binary logistic regression was adopted for analysis. This study found that only systematic cues of online review were found to affect the usefulness of it. Moreover, we preceded further study examining the moderating effect of seasonality in the relationships between systematic cues and usefulness.

• International Journal of Advanced Culture Technology
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• v.10 no.4
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• pp.67-76
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• 2022

This study aimed to guide the practice of group art therapy among Korean college students through a systematic review. Therefore, 164 studies relevant to group art therapy for Korean undergraduate students published in Korea from January 2001 to June 2021 were selected. This systematic review included 46 publications based on the PICO standards. The author systematically reviewed the included studies, summarized the characteristics and therapy effectiveness, and analyzed the overall research trends. The primary findings were as follows: First, the number of publications on group art therapy among Korean college students has significantly increased. According to a review of group art therapy characteristics, the majority of studies enrolled 6-10 participants (32 studies, 66.7%), applied 6-10 sessions (23 studies, 47.9%), and had an intervention time for each session of 90 minutes (25 studies, 53.2%). Second, research outcomes of group art therapy among Korean college students were grouped into self-related, society-related, emotion-related, and career-related outcomes. Regarding career-related outcomes, all studies found that group art therapy had a statistically significant impact on career-related outcomes, particularly on the levels of career decision-making and maturity. Most studies suggested that group art therapy had a positive effect on self-related, society-related, and emotion-related outcomes, with 6 studies finding no statistically significant effect of group art therapy on college students. Third, the most effective intervention for college students was the media-based group art therapy. In particular, college students had the most effective performance in career-related outcomes. This study is significant in that it uses a systematic review to integrate and summarize research results on group art therapy among college students over the last 20 years. This study revealed that group art therapy could positively and effectively affect Korean college students. Based on this systematic review, we expect to practice and develop group art therapy in Chinese college students with comprehensive guidance and convincing data.

• Women's Health Nursing
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• v.19 no.3
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• pp.129-141
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• 2013

Purpose: The purpose of this study was to determine the current state of nursing intervention for maternal adaptation and its' effectiveness in Korea by utilizing a systematic review. Methods: The PICO(Population-Intervention-Compar ator-Outcome) strategy was established, and 1,720 pieces of literature published during the last ten-year period from four electronic databases were reviewed. Eighteen references that met inclusion and exclusion criteria were finally selected for systematic review. The quality of references using critical appraisal checklist for experimental studies were evaluated, and then systematic review and meta-analysis were conducted. Results: All 18 references were quasi-experimental research design. Most interventions were provided at the hospital and postpartum care center. Maternal adaptation interventions appeared to be of many types, and particularly maternal role education programs were the most common. Confidence in maternal role was used as the most common variable for the maternal adaptati on. Various interventions for helping maternal adaptation in the postnatal period improved maternal confidence, moth er-infant attachment, maternal satisfaction and mother-infant interaction effectively. Conclusion: A diversity of nursin g interventions in postnatal period improved various aspects of maternal adaptation. Randomized controlled trials and longitudinal studies are needed in order to verify the effect of interventions for maternal adaptation more clearly.

• Journal of Korean society of Dental Hygiene
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• v.20 no.3
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• pp.257-268
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• 2020

Objectives: This purpose of this study was to examine the trends in interventional research and analyze the contents and results of intervention through a systematic literature review of the domestic research literature, suggesting the effect of an oral care program on elementary school students. Methods: A total of 262 articles were retrieved initially, and the duplicate articles were then removed, excluded after screening titles, abstracts, and full-text articles. Finally, a total of 16 papers were used in the review. Results: The study included 9 articles with the nonequivalent control group pretest-posttest design and 7 with the one-group pretest-posttest design. All articles were of non-randomized studies. The most common index of the interventional effect was dental plaque. Further, oral health behaviors and knowledge, perception, self-efficacy, and DMFT index were common indices. In the quality assessment, in the "blinding of outcome assessment" among six items of ROBANS, 12 studies showed a high risk of bias. Conclusions: In order to develop an interventional oral health care program for elementary school students and evaluate the effectiveness, a strict research design and qualitative improvement of research reports are required, and continuous research should be conducted to develop a systematic protocol.

• Journal of Pharmacopuncture
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• v.25 no.3
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• pp.186-198
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• 2022

Objectives: This overview summarizes the evidence for the effectiveness and safety of complementary therapies for insomnia through systematic reviews (SRs) and meta-analyses (MAs). Methods: A comprehensive literature search on SRs and MAs for complementary therapies for insomnia was conducted using six databases. Results: This overview included 30 SRs/MAs. The Pittsburgh Sleep Quality Index (PSQI) analysis of insomnia included 383 randomized controlled trials and 31,748 participants. Twenty-four SRs/MAs (80%) out of 30 SRs/MAs reported a positive result, and six SRs/MAs reported a partially positive result. The most frequently used form of acupuncture reported a positive effect in 89.5% (17/19) of SRs/MAs and a superior effect to western medicine, sham/placebo, and no treatment. The lack of protocol registration and the excluded studies list resulted in generally poor methodological and reporting quality in SRs/MAs with AMSTAR 2. Conclusion: This overview confirmed that complementary therapies positively affected the PSQI scores in patients with insomnia. However, better-designed primary studies are needed to strengthen the relevant evidence in the future. A more stringent assessment of multiple systematic reviews 2 must be followed when performing SR and MA.

• Restorative Dentistry and Endodontics
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• v.48 no.4
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• pp.34.1-34.12
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• 2023

This systematic review aimed to investigate whether minimally invasive root canal preparation ensures higher fracture resistance compared to conventional root canal preparation in endodontically treated teeth (ETT). A comprehensive search strategy was conducted on the "PubMed, Web of Science, and Scopus" databases, alongside reference and hand searches, with language restrictions applied. Two independent reviews selected pertinent laboratory studies that explored the effect of minimally invasive root canal preparation on fracture resistance, in comparison to larger preparation counterparts. The quality of the studies was assessed, and the risk of bias was categorized as low, moderate, or high. The electronic search yielded a total of 1,767 articles. After applying eligibility criteria, 8 studies were included. Given the low methodological quality of these studies and the large variability of fracture resistance values, the impact of reduced apical size and/or taper on the fracture resistance of the ETT can be considered uncertain. This systematic review could not reveal sufficient evidence regarding the effect of minimally invasive preparation on increasing fracture resistance of ETT, primarily due to the inherent limitations of the studies and the moderate risk of bias.

• Journal of Korean Medicine Rehabilitation
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• v.27 no.3
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• pp.47-60
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• 2017

Objectives The aim of this research is to assess the effects of bee venom acupuncture for knee osteoarthritis. Methods For a systematic review, we constructed a key question as the effect of bee venom acupuncture for knee osteoarthritis and selected RCTs and nRCTs. We searched the following 15 databases without a language restriction: Pubmed, EMBASE, Cochrane CENTRAL (CENTRAL), CINAHL, AMED, seven Korean medical databases (KoreaMed, Kmbase, KISS, NDSL, KISTI, Koreantk, OASIS) and three Chinese databases including CNKI, Wanfang and VIP database. Results A total of 300 potentially relevant studies were identified; only 13 studies were selected for systematic review. Almost studies showed that bee venom acupuncture has significant effect on knee osteoarthritis. 5 studies comparing bee venom acupuncture with acupuncture were included in the meta-analysis. The effect size of standardized mean difference (SMD) was analyzed as 'small effect' with 0.47 (95% CI: 0.10~0.83, Z=2.49, p=0.01). Conclusions The research showed that bee venom acupuncture can significantly reduce pain, stiffness and improve the quality of life of patients with knee osteoarthritis. However, most of the studies included in the analysis were evaluated as methodologically high risk of bias. This suggests that there is limitation applying this study. In the future, more Randomized Controlled trial should be actively conducted.

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

• Korean Institute of Interior Design Journal
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• no.26
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• pp.64-71
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• 2001

After Industrial Revolution, new thought system is needed to subdue multi-chanties and complexities of society. Nowadays under 'system theory', these efforts are theorized and organized in fields of science, philosophy and others. From Industrial revolution, before establishing the system theory, system has been needed by the expression methods. From that time, as it could be done, standardization, has been continued. Finally these conclusion reached at the systematic expression methods and when the system was build up, this theory was come true in Art such as De Stijl, Neo-Pasticism, Russian Suprematism and Constructism. For that reason, formal solution to achieve mass reductions was found in Art, so people connected Industry with Art at that time. Systematic expression methods in Art have characteristics of system and reflect mathematics and geometry theory which is based on the system theory. This study analyzes the systematic methods in contemporary interior space through the concept of systematic expression methods in Swiss Allianz's works which used the systematic expression methods and also inquires how the common meaning of system after recent times effect to contemporary design.

• Journal of Information Technology Applications and Management
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• v.26 no.6
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• pp.47-63
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• 2019

The volatility of major crypto currencies was examined and they are diagnosed whether they have a systematic risk or not, by estimating market beta representing systematic risk using GARCH( Generalized Auto Regressive Conditional Heteroskedastieity) model. First, the empirical results showed that their prices are very volatile over time because of the existence of ARCH and GARCH effects. Second, in terms of efficiency, asymmetric GJR model was estimated to be the most appropriate model because the standard error of a market beta was less than that of the OLS model and GARCH model. Third, the estimated market beta of Bitcoin using GJR model was less than 1 at 0.8791, showing that there is no systematic risk. However, unlike OLS model, the market beta of Ethereum and Ripple was estimated at 1.0581 and 1.1222, showing that there is systematic risk. This result shows that bitcoin is less dangerous than Ripple and Ethereum, and ripple is the most dangerous of all three crypto currencies. Finally, the major cryptocurrency found that the negative impact caused greater variability than the positive impact, causing bad news to fluctuate more than good news, and therefore good news and bad news had a different effect on the variability.