• Korea Trade Review
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• v.46 no.3
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• pp.203-226
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• 2021

Sustainability is considered to be one of the most important social and environmental requirements of modern companies located in global supply chains, since the strong worldwide regulation on carbon emission due to global warming has been emphasized. Sustainable Supply Chain Management(SSCM) could be one of the great alternatives for global companies to maintain a pleasant business environment while fulfilling their social and environmental responsibilities. This paper aims to provide research trends and future directions on SSCM through a systematic literature review. From January of 2004 to May of 2021, 185 English-written and peer-reviewed articles published in eminent journals were selected for the review. The all reviewed papers have been published in SSCI, SCI and SCIE indexed journals and should have accredited by WOS and JCR. A descriptive analysis was followed by a content analysis with regard to research design and methods, and data analysis techniques. We found that the number of research in the field of SSCM have been recently increasing and researchers and their affiliation have been expanding to all over the world, especially to emerging countries. We also found that the rate of the empirical studies and relevant research methodologies applied to the selected papers were relatively high. In the future, it is desirable to be increased the number of the specific industry-oriented research and the quantitative research pursuing the optimality.

• Journal of Digital Convergence
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• v.18 no.11
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• pp.59-71
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• 2020

The paper reports on a systematic literature review results concerning the smart factory research in Korea. 144 papers were identified from the articles published in Korean journals listed in the Korean citation index by keyword search related to smart factory. Bibliometric analyses were conducted by way of co-occurrence and network analysis using the VOSViewer. Automation, intelligence, and bigdata were identifed as three critical clusters of research while, operating systems, international policy and cases, concept analysis as other three clusters of research. Internet of Things turned out to be a key technology of smart factory linking all of these areas. Servitization studies were small in numbers but seemed to have a lot of potential. Security researches seemed to be lacking connections with other areas of studies. Results of this study can be used as a milestone for identifying future research issues in smart factories.

• Journal of Industrial Convergence
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• v.22 no.2
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• pp.85-96
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• 2024

This study attempted to examine the research trends of single-person households with disabilities using a systematic literature review research method. To this end, 2,161 papers published by September 30, 2023 were searched in a total of four databases: KCI, RISS, KISS, and e-Articl, combining related search terms such as single-person households with disabilities, single-person households and disabled person living alone. In five stages, irrelevant literature to single-person households with disabilities was excluded, and the final 13 documents were selected and analyzed. As a result of the study, first, research topics were classified into research topics for single-person households, analysis of the actual conditions and related factors, issues and support measures related to single-person households, and three case studies related to single-person households. Second, women, age, income, interpersonal skills, health, unemployment, and family support are lower in single-person households with disabilities. Accordingly, based on the research results, suggestions for follow-up studies and practical and policy implications for social welfare were presented.

• Journal of Korean Academy of Nursing
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• v.46 no.4
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• pp.475-489
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• 2016

Purpose: This study was a systematic review and meta-analysis designed to investigate the effects of stimulation-oriented interventions for behavioral problems among people with dementia. Methods: Based on the guidelines of the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA), a literature search was conducted using seven electronic databases, gray literature, and other sources. Methodological quality was assessed using the Scottish Intercollegiate Guidelines Network (SIGN) for randomized controlled trials (RCTs). Data were analyzed using R with the 'meta' package and the Comprehensive Meta-Analysis (CMA 2.0) program. Results: Sixteen studies were included for meta-analysis to investigate the effect of stimulation-oriented interventions. The quality of individual studies was rated as '++' for eight studies and '+' for the rest. The effect sizes were analyzed according to three subgroups of interventions (light, music, and others); Hedges' g=0.04 (95% CI: -0.38~0.46), -0.23 (95% CI: -0.56~0.10), -0.34 (95% CI: -0.34~0.00), respectively. To explore the possible causes of heterogeneity ($I^2=62.8%$), meta-regression was conducted with covariates of sample size, number of sessions, and length of session (time). No moderating effects were found for sample size or number of sessions, but session time showed a significant effect (Z=1.96, 95% CI: 0.00~0.01). Finally, a funnel plot along with Egger's regression test was performed to check for publication bias, but no significant bias was detected. Conclusion: Based on these findings, stimulation-oriented interventions seem to have a small effect for behavioral problems among people with dementia. Further research is needed to identify optimum time of the interventions for behavioral problems among dementia pateints.

• The Journal of Internal Korean Medicine
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• v.40 no.3
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• pp.312-330
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• 2019

Objectives: The present study aimed to provide clinical evidence on the effect of herbal medicine on the treatment of hepatitis C using a systematic review and meta-analysis of randomized controlled trials (RCTs). Methods: This study included RCTs that verified the effects of herbal medicine for the treatment of hepatitis C. A literature search of English, Chinese, and Korean databases was performed, and the selected literature was assessed to investigate the risk of bias. Results: The analysis included 14 RCTs. The total effective rate was the most commonly used outcome measure. The meta-analysis revealed that the total effective rate and total bilirubin difference were higher and that the recurrent rate was lower in the herbal medicine group than in the western medicine group (RR: 1.20, 95% CI: 1.06-1.35, p=0.003, I2=52; MD: 0.52, 95% CI: -0.62 to 1.66, p=0.37, I2=0; RR: 0.35, 95% CI: 0.11-1.09, p=0.07, I2=0). The included RCTs had relatively poor quality and a small sample size. Conclusion: Treatment with herbal medicine was found to be partially effective in treating hepatitis C. The included RCTs had relatively poor quality and a small sample size. This study can serve as a foundation for further clinical studies on the development of treatment methods for hepatitis C based on herbal medicine.

• PNF and Movement
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• v.17 no.1
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• pp.157-166
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• 2019

Purpose: This study compares and examines the effects of proprioceptive neuromuscular facilitation (PNF) on patients with chronic low back pain through systematic literature review and meta-analysis. Methods: Domestic literature was searched with combinations of keywords including "proprioceptive neuromuscular facilitation," "PNF," "back pain," and "low back pain" using the Research Information Sharing Service (RISS), Korean Studies Information Service System (KISS), and Korean Medical Database (KMbase). Six studies (n=148) were finally included in the analysis through a selection and exclusion process. The quality of the studies was evaluated using the PEDro scale. Results: According to the meta-analysis results, the low back pains of the PNF group and the contrast group showed a standardized mean difference (SMD) of 2.21 (95% CI: -3.35, -1.07, p=0.01, $I^2=83%$) after intervention. Thus, the PNF group showed a statistically significant decrease in low back pain compared with the control group. In addition, the SMDs of the Oswestry Disability Index (ODI), lung function, and the Roland and Morris Disability Questionnaire (RMDQ) were -1.34 (95% CI: -1.88, -0.79, p<0.01, $I^2=35%$), 1.14 (95% CI: 0.49, 1.79, p=0.01, $I^2=0%$), and -1.59 (95% CI: -2.56, -0.62, p=0.01, $I^2=46%$), respectively. Thus, the PNF group showed statistically significant differences from the control group. Conclusion: At present, there is some limit to obtaining definite results about effect sizes because there are relatively few randomized controlled experiments that analyze the effects of PNF exercise in patients with chronic low back pain. Therefore, continuous efforts should be made to conduct randomized clinical trials and long-term efficacy studies in the future.

• Korean Parent-Child Health Journal
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• v.22 no.1
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• pp.10-21
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• 2019

Purpose: This study was carried out to evaluate the efficacy of exercise program on recovery of functional and quality of life in breast cancer patients through systematic literature review and meta-analysis. Methods: The following databases were used to search the literature: RISS, KISS, KMbase, and KoreaMed. Keywords included 'breast cancer', 'mastectomy' 'exercise', 'rehabilitation', 'intervention' and the evaluated articles were published from 2009 to 2018. The statistical was used R program, the effect size of shoulder functionality, grip strength, upper limb, pain and QOL were calculated by random-effects model. Results: 7 RCT studies were meta-analyzed and were evaluated for the risk of bias by the RoB of Cochrane Collaboration; the overall risk of bias was low. The effect sizes of exercise program was flexion (g=1.11), abduction (g=0.97) as indicated by a "large effect size". Conclusion: It is necessary to study the develop and apply a exercise programs to improve the function and quality of life in breast cancer patients.

• Journal of muscle and joint health
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• v.24 no.1
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• pp.24-36
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• 2017

Purpose: The purpose of the study was to comprehensively explore the factors influencing quality of life and its measurements in patients with hypertension. Methods: Based on the PRISMA statement and NECA systematic literature review guideline, a systematic literature review was conducted in this study. To search studies related to quality of life in patients with hypertension, multiple electronic databases were used using a combination of key words 'hypertension' and 'quality of life'. Throughout this process, a total of 983 studies were identified. Then, the second selection processes and quality assessment were conducted by four investigators independently. Finally, a total of 19 studies were included for the analysis. Results: Results showed that quality of life was focused on the health-related quality of life, and the SF-36 was one of the most frequently used measurements. The factors influencing quality of life were categorized into sociodemographic, health-related, health behavioral, and psychosocial variables. Conclusion: Researchers need to consider these multiple factors to promote quality of life in patients with hypertension.

• Journal of Information Science Theory and Practice
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• v.10 no.4
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• pp.87-109
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• 2022

Previous studies have found that the use or development of theory in library and information science (LIS) research is comparatively low and may be trending downward. LIS has also been criticized for relying on theories imported from other disciplines rather than applying or developing theories from within. The theory of information worlds, a social information behavior theory originally introduced in 2008, represents a newer LIS theory whose level of adoption is understudied. This study features a systematic literature review of peer-reviewed research articles which cited or used the theory of information worlds from 2008 to early 2022 to identify trends related to levels of theory use, publication venues, author affiliations, countries, and collaborations, as well as research methods, topics, and populations. Findings suggest that both awareness and use of the theory of information worlds are positively trending, though at slower rates for higher levels of theory use, such as full applications of the theory to guide the collection and analysis of empirical data. The theory has also been used by researchers from around the world and across disciplines, most often with mixed and qualitative methods. While the growth of a new LIS theory is promising, the authors echo calls for increased use and development of the theory of information worlds, and other LIS theories more broadly, and as more interdisciplinary collaboration.

• The Korean Journal of Emergency Medical Services
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• v.25 no.1
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• pp.193-203
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• 2021

Purpose: This study aimed to examine the degree of job satisfaction of emergency medical technicians and its influencing factors through systematic review of prior studies. Methods: Databases were searched including national assembly library, national digital science library, korea education research information service and korean studies information service system to conduct systematic literature review. Results: The included studies were published from 2004 to 2017. After applying the inclusion and exclusion criteria to the retrieved 92 studies, a total of 11 studies were included for the final analysis. The questionnaire developed by Slavitt, Stamps, Piedmont and Haase was the most common tool used from the included studies. In the study using 5 point Likert type scale, the average job satisfaction level of emergency medical technicians was 3.18. It was 2.86 based on 4 point scale. Conclusion: According to the study results, the satisfaction level of emergency medical technicians is around the medium level. Effective strategy should be developed to improve job satisfaction based on the findings of the influencing factors to emergency medical technicians' job satisfaction.