• Title/Summary/Keyword: systematic study

Search Result 10,170, Processing Time 0.035 seconds

A Study on the Mediating Effect of Interaction among Learners in a Web Based Collaboration Learning Environment (웹 기반 협력학습 환경에서 학습자간 상호작용의 매개효과 관한 연구)

  • Lee, Dong-Hoon;Lee, Sang-Kon
    • Journal of Information Technology Services
    • /
    • v.12 no.2
    • /
    • pp.195-214
    • /
    • 2013
  • The purpose of this study is to verify the mediating effect of interaction among learners in a Web Based Collaboration Learning (WBCL) environment. 254 Korean college students served as test subjects and during the 4 weeks of research period, they studied the Test of English for International Communication (TOEIC) in a web-based collaborative learning system. The interaction between learners was looked into by categorizing the concept into task oriented information sharing activities and relationship oriented communication activities and analyzing the causal relationship between the two activities. Learning performances were measured in individual level. The results are as follows. First, task oriented information sharing activities effect positively on relationship oriented information sharing activities. Second, the managerial characteristics of WBCL had a positive effect on interaction between learners but the systematic characteristics had partial influence on interaction between learners. Third, the interaction between learners completely interconnects the managerial characteristics of WBCL and learning performance but partially interconnects the systematic characteristic of WBCL and learning performance. In conclusion, this study implies that managerial and systematic characteristics of WBCL should be considered on the preferential basis for the WBCL to become successful and interactive activities such as information sharing and communication should be encouraged to be active from a small-size WBCL perspective.

Correlates of Cognitive Impairment of Rheumatic Disease: Systematic Review and Meta-analysis (류마티스질환 환자의 인지손상과 관련된 요인 규명: 체계적 문헌고찰 및 메타분석)

  • Mo, JinA;Park, JiSuk;Oh, HyunSoo
    • Journal of Korean Academy of Nursing
    • /
    • v.46 no.1
    • /
    • pp.1-18
    • /
    • 2016
  • Purpose: This study was conducted to synthesis the results of research on relationships of cognitive impairment with multi-dimensional correlates of rheumatic disease through a systematic literature review and meta-analysis. Methods: For the study purpose, 23 studies were selected through a systematic process of searching the literature. Results: The study results showed that among general characteristics, age and education were the variables having a significant relationship with cognitive impairment. Among health risk factors, obesity appeared to have a significant positive relationship with cognitive impairment. For past history, diabetes and hypertension were shown to have a significant positive relationship with cognitive impairment. It was noted also that aPL, one of the physiological factor, had significant association with cognitive impairment. None of the medication related factors had a significant relationship with cognitive impairment. Results showed that among disease related factors, disease activity had the highest relationship with cognitive impairment. Depression, among psychological factors, was the only variable having a significant relationship with cognitive impairment. Conclusion: The findings indicate that the variables strongly impacting on cognitive impairment in rheumatic disease are depression and disease activity.

Effects of hippotherapy on children with cerebral palsy: systematic review and meta-analysis

  • Kim, Kwon-Hoi;Lee, Suk-Min
    • Physical Therapy Rehabilitation Science
    • /
    • v.9 no.1
    • /
    • pp.55-65
    • /
    • 2020
  • Objective: The most important goal of hippotherapy is to improve function, gait, and balance. The purpose of this study was to investigate the effects of hippotherapy on function, gait, and balance of children with cerebral palsy (CP). Design: A systematic review and meta-analysis. Methods: We've searched the PubMed, EMBASE, and Cochrane Library CENTRAL databases for English experimental studies published up until September 2018. To analyze the effects of hippotherapy on the function, gait, and balance of children with cerebral palsy, the systematic review and meta-analysis were performed on Patient/Participants/Population Problem, Intervention, Comparison, Outcome with Timing, Setting Study Design. Papers retrieved from the database were removed from the literature management database. Methodological quality evaluation was evaluated using Cochrane's risk of bias. Data was analyzed using the Revman 5.3 program of the Cochrane library. Results: In this study, we found that the effect size of hippotherapy, denoted as d, was -3.82, and that hippotherapy had the most effect on gait, but no statistical significant difference was observed. We also found no significant difference in function and balance after hippotherapy. It was found from the funnel plot that there was no publication bias as the plot was symmetrically distributed around the dotted line. Conclusions: There are many unclear studies and a lack of randomized controlled trials (RCTs) in this research area. More RCTs on the effects of hippotherapy on children with CP should be conducted in the future.

Improving the Yield of Semiconductor Manufacturing Processes using Clustering Analysis and Response Surface Method (군집분석 및 반응표면분석법을 활용한 반도체 공정 수율향상에 관한 연구)

  • Koh, Kwan Ju;Kim, Na Yeon;Kim, Yong Soo
    • Journal of Korean Society for Quality Management
    • /
    • v.47 no.2
    • /
    • pp.381-395
    • /
    • 2019
  • Purpose: This study aims to conduct a systematic literature review to suitably identify wide and specific issues and topics on service quality in supply chain. Methods: This study is to investigate service quality in supply chain research using a systematic literature review methodology. In order to extract influential journals and papers, we used the SJR impact factor provided by the SCOPUS database. The collected 169 papers were analyzed using bibliometric analysis, citation analysis as well as keywords network. Results: We conducted a bibliometric analysis to identify top authors contributing to service quality in supply chain and their issues, and further examined important keywords and new emerging keywords. In addition, we extracted five influential papers by PageRank to clarify critical issues and divided into five clusters to identify topics of service quality in supply chain by using network-based approach. In order to examine comprehensive issues and topics of service quality in supply chain, we constructed a keyword network to observe difference in the classification of important keywords across network centrality measures. Conclusion: Our study reviewed literature on service quality in supply chain and explored the future directions and trends of service quality in supply chain.

Job satisfaction of emergency medical technicians and influencing factor: a literature review (응급구조사의 직무만족도와 영향요인에 대한 문헌고찰)

  • Shin, Yo-Han;Kook, Jong-Won;Kim, Bo-Kyun
    • The Korean Journal of Emergency Medical Services
    • /
    • v.25 no.1
    • /
    • pp.193-203
    • /
    • 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.

Associations between obstructive sleep apnea and painful temporomandibular disorder: a systematic review

  • Kang, Jeong-Hyun;Lee, Jeong Keun
    • Journal of the Korean Association of Oral and Maxillofacial Surgeons
    • /
    • v.48 no.5
    • /
    • pp.259-266
    • /
    • 2022
  • The relationship between obstructive sleep apnea (OSA) and diverse types of pain conditions have been proposed. However, no consensus on the relationship between OSA and painful temporomandibular disorders (TMDs) has been established. Therefore, this systematic review has been conducted to review the existing literatures and provide comprehensive synthesis of such literatures about OSA and painful TMDs using the evidence-based methodology. A literature search was conducted using two electronic databases, Scopus, and PubMed. Risk of bias was assessed using the risk-of-bias assessment tool for non-randomized study version 2.0. A total of 158 articles were screened from the initial search and eventually, 5 articles were included in this systematic review. One study adopted both the longitudinal prospective cohort and case-control designs and other 4 articles adopted the cross-sectional design. Two studies employed polysomnography (PSG) for the diagnosis of OSA and mentioned the results from the PSG. All cross-sectional studies demonstrated higher OSA prevalence among patients with TMD, and one cohort study suggested OSA as a risk factor for TMD. OSA appears to have potential influences on the development of TMD; however, the role of TMD in the development of OSA remains to be unknown owing to the lack of high-quality evidences.

A Systematic Mapping Study on Artificial Intelligence Tools Used in Video Editing

  • Bieda, Igor;Panchenko, Taras
    • International Journal of Computer Science & Network Security
    • /
    • v.22 no.3
    • /
    • pp.312-318
    • /
    • 2022
  • From the past two eras, artificial intelligence has gained the attention of researchers of all research areas. Video editing is a task in the list that starts leveraging the blessing of Artificial Intelligence (AI). Since AI promises to make technology better use of human life although video editing technology is not new yet it is adopting new technologies like AI to become more powerful and sophisticated for video editors as well as users. Like other technologies, video editing will also be facilitated by the majestic power of AI in near future. There has been a lot of research that uses AI in video editing, yet there is no comprehensive literature review that systematically finds all of this work on one page so that new researchers can find research gaps in that area. In this research we conducted a statically approach called, systematic mapping study, to find answers to pre-proposed research questions. The aim and objective of this research are to find research gaps in our topic under discussion.

Genetic determinants of periosteum-mediated craniofacial bone regeneration: a systematic review

  • Eyituoyo Okoturo
    • Archives of Craniofacial Surgery
    • /
    • v.24 no.6
    • /
    • pp.251-259
    • /
    • 2023
  • Background: Periosteum-mediated bone regeneration (PMBR) is a recognized method for mandibular reconstruction. Despite its unpredictable nature and the limited degree to which it is understood, it does not share the concerns of developmental changes to donor and recipient tissues that other treatment options do. The definitive role of the periosteum in bone regeneration in any mammal remains largely unexplored. The purpose of this study was to identify the genetic determinants of PMBR in mammals through a systematic review. Methods: Our search methodology was designed in accordance with the PRISMA (Preferred Reporting Items for Systematic Review and Meta-Analysis) guidelines. We conducted a quality assessment of each publication, and evaluated the differences in gene expression between days 7 and 15. Results: A total of four studies satisfied the inclusion criteria. The subjects and tissues examined in these studies were Wistar rat calvaria in two studies, mini-pigs in one study, and calves and mice in one study. Three out of the four studies achieved the necessary quality score of ≥ 3. Gene expression analysis showed increased activity of genes responsible for angiogenesis, cytokine activities, and immune-inflammatory responses on day 7. Additionally, genes related to skeletal development and signaling pathways were upregulated on day 15. Conclusions: The results suggest that skeletal morphogenesis is regulated by genes associated with skeletal development, and the gene expression patterns of PMBR may be characterized by specific pathways.

A Creative Apparel Up-cycling Design Development Using Creative Thinking Methodology

  • Minji Kim
    • Journal of Fashion Business
    • /
    • v.27 no.6
    • /
    • pp.147-159
    • /
    • 2023
  • Fashion is the second most polluting industry. We must strive to transition to a form of industry that does not cause environmental pollution. These efforts drive may fashion brands to produce and sell products with redesigned methods that delight the inventory flow. Accordingly, it is necessary to develop creative apparel up-cycling design using the creative thinking method. This study aims to produce clothing redesign works by introducing design idea types for systematic redesign creation. In this research, we conducted a literature review on the concept of up-cycling design and employed heterotopa spacial concept reflected fashion design creation methodology types. The RE;CODE, a leading domestic up-cycling design brand, was used in case analysis. According to the command of shape transformation, it is spreading, stacking, dropping, inverting and crossing, from the creative thinking method reflecting heterotopia spacial concepts, showing designers a concrete way to transform form into new apparel. Seven works of apparel up-cycling design were developed by conducting process of RE;CODE. Also, to establish an apparel up-cycling design creation process for creating works. In this study, we proposed a systematic method for apparel up-cycling design, including a method for reorganizing two or more different materials to create something new and ultimately reversing the structure. The value and significance of this study is that it proposes a systematic method for apparel up-cycling design to make it new.

The Impact of Food Delivery Apps on Urban Hotels after the Pandemic and its Implications

  • Eungoo KANG
    • The Journal of Industrial Distribution & Business
    • /
    • v.15 no.4
    • /
    • pp.11-18
    • /
    • 2024
  • Purpose: The primary purpose of this research is to investigate the multidisciplinary effect of food delivery apps (FDAs) in urban hotels in the wake of the lockdown due to Covid-19 pandemic. Specifically, the study aims: To explore and scrutinize the primary shifts in customer behavior and preferences in modern urban hotels, and to explore and scrutinize the primary shifts in customer behavior and preferences in modern urban hotels. Research design, data and methodology: This study conducted a systematic literature review to gather evidence of the FDA's effect on customer behavior and the hospitality industry during the Covid-19 pandemic. Complying with the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) principles guarantees a structured and transparent method to search the literature and its analysis. Results: The result based on the systematic review has indicated that the booming business of food delivery at home companies and changing consumer tastes prove the FDA's growing circuit in the hotel industry, thus demonstrating their ability and power to adapt to changing trends. Conclusions: Therefore, this study concludes that using FDA's platform, future hospitality managers have to focus on agility in operations, innovation, and technology integration to keep up with changing consumer trends and market conditions.