• 산경연구논집
• /
• 제14권8호
• /
• pp.19-25
• /
• 2023

Using a procurement and construction stage emphasis on the capabilities of the Sub-Contractor (SC), the present research aims to discover the types of unfair activities between the Main Contractor (MC) and SC and their influence on project completion. This research also tries to figure out solutions which can reduce unfair activities between MC and SC. Research design, data and methodology: The qualitative textual analysis was selected for the current research and has been used by numerous previous researchers commonly to review relevant themes in the prior resources and suggested for researchers who conduct a reviewing procedure to analyze meta-analysis approach for figuring out better research findings from prior resources. Results: The result indicates the prevalence and consequences of bid shopping, emphasizing the need for transparency and fair bidding practices. Late payment issues were also found to be crucial for subcontractors' financial stability, urging the implementation of prompt payment legislation and agreements. Conclusions: In conclusion, the research revealed that subcontracting is common in construction projects, with general contractors relying on multiple subcontractors to carry out specific work items. The accomplishment of building projects hinges on the collaborative efforts between the main contractor (MC) and subcontractors (SCs), each focusing on different aspects of the project.

• 국제학술발표논문집
• /
• The 5th International Conference on Construction Engineering and Project Management
• /
• pp.444-450
• /
• 2013

Public private partnership (PPP) procurement was introduced into Singapore in 2003, and 10 PPP projects was successfully completed and have been in operation. The objective of this study is to identify the critical risk factors and risk allocation preferences for PPP projects in Singapore. To achieve this objective, a comprehensive literature review was carried out and 42 risks were identified and grouped into three meta levels, i.e. macro, meso and micro levels. The questionnaire survey produced 48 completed questionnaires from 48 different contractors. The survey results indicated that 23 risk factors had significantly high criticalities and that four macro-level risks, four meso-level risks and two micro-level risks were among the top 10 risk ranking. "Lack of support from government", "availability of finance" and "construction time delay" were perceived as the top three critical risks. Also, the result implied that micro-level risks had a higher criticality mean score than macro-level and meso-level risks. The findings of this study help both public and private sectors to better understand the risks and their allocation in PPP projects, providing valuable information for organizations that intend to participate in PPP projects in Singapore.

• Korean Circulation Journal
• /
• 제53권3호
• /
• pp.113-133
• /
• 2023

Owing to a large-jeopardized myocardium, left main coronary artery disease (LMCAD) represents the substantial high-risk anatomical subset of obstructive coronary artery disease. For several decades, coronary artery bypass grafting (CABG) has been the "gold standard" treatment for LMCAD. Along with advances in CABG, percutaneous coronary intervention (PCI) has also dramatically evolved over time in conjunction with advances in the stent or device technology, adjunct pharmacotherapy, accumulated experiences, and practice changes, establishing its position as a safe, reasonable treatment option for such a complex disease. Until recently, several randomized clinical trials, meta-analyses, and observational registries comparing PCI and CABG for LMCAD have shown comparable long-term survival with tradeoffs between early and late risk-benefit of each treatment. Despite this, there are still several unmet issues for revascularization strategy and management for LMCAD. This review article summarized updated knowledge on evolution and clinical evidence on the treatment of LMCAD, with a focus on the comparison of state-of-the-art PCI with CABG.

• 지능정보연구
• /
• 제25권3호
• /
• pp.179-200
• /
• 2019

구전(Word-of-Mouth) 활동은 오래 전부터 기업의 마케팅 과정에서 중요성을 인식하고 특히 마케팅 분야에서 많은 주목을 받아왔다. 최근에는 인터넷의 발달에 따라 온라인 뉴스, 온라인 커뮤니티 등에서 사람들이 지식과 정보를 주고 받는 방식이 다양해지면서 구전은 후기, 평점, 좋아요 등으로 입소문의 양상이 다각화되고 있다. 이러한 현상에 따라 구전에 관한 다양한 연구들이 선행되어왔으나, 이들을 종합적으로 분석한 메타 분석 연구는 부재하다. 본 연구는 학술 빅데이터를 활용해 구전 관련 연구동향을 알아내기 위해서 텍스트 마이닝 기법을 적용하여 주요 연구들을 추출하고 시기별로 연구들의 주요 쟁점을 파악하는 기법을 제안하였다. 이를 위해서 1941년부터 2018년까지 인용 데이터베이스인 Scopus에서 'Word-of-Mouth'라는 키워드로 검색되는 총 4389건의 문헌을 수집하였고, 영어 형태소 분석과 불용어 제거 등 전처리 과정을 통해 데이터를 정제하였다. 본 연구는 학문 분야의 발전 궤적을 추적하는 데 활용되는 주경로 분석기법을 적용해 구전과 관련된 핵심 연구들을 추출하여 연구동향을 거시적 관점에서 제시하였고, 단어동시출현 정보를 추출하여 키워드 간 네트워크를 구축하여 시기별로 구전과 관련된 연관어들이 어떻게 변화되었는지 살펴봄으로써 연구동향을 미시적 관점에서 제시하였다. 수집된 문헌 데이터를 기반으로 인용 네트워크를 구축하고 SPC 가중치를 적용하여 키루트 주경로를 추출한 결과 30개의 문헌으로 구성된 주경로가 추출되었고, 연관어 네트워크 분석을 통해서는 시기별로 온라인 시대, 관광 산업 등 다양한 산업군 등 산업 변화가 반영돼 시대적 변화와 더불어 발전하고 있는 학술적 영역의 변화를 확인할 수 있었다.

• 한국융합학회논문지
• /
• 제12권3호
• /
• pp.325-339
• /
• 2021

연구의 목적은 문헌고찰을 통해 스포츠 관련 인지기능과 이를 효과적으로 측정할 수 있는 검사도구를 제안하고, 스포츠 지능 연구의 기초를 마련하는 것이다. 문헌고찰은 체계적 문헌고찰과 메타분석 지침인 PRISMA 연구법에 근거하여 수행되었다. 게재년도 2008-2020년으로 검색기준 설정 후, 키워드를 통해 검색된 총 429편 중 본 연구의 문헌선택 기준을 충족한 45편이 최종 분석되었다. 고찰된 논문 결과를 요약하면, 선수들은 비선수보다 특정 인지기능이 우수하고, 스포츠 전문성이 높을수록 해당 인지기능이 더 높았으며, 종목에 따라 인지기능에 차이가 있는 것으로 나타났다. 45편에 대한 종합적 분석결과, 스포츠 수행과 관련된 주요 인지기능은 실행기능(억제능력, 인지유연성), 정보처리속도, 공간능력, 주의력으로 요약된다. 각 인지기능 측정을 위한 검사도구로 억제능력은 정지신호과제, 인지유연성은 설계유연성검사, 정보처리는 단순반응검사와 선택반응검사, 공간능력은 심적회전검사, 주의력은 주의연합검사가 적절하다.

• 한방재활의학과학회지
• /
• 제32권3호
• /
• pp.13-27
• /
• 2022

Objectives This study investigated the trends in domestic and international clinical research in craniosacral therapy, classified as a type of Chuna manual therapy, and suggested further directions in Korean medicine. Methods This scoping review was performed using the Arksey and O'Malley methodological framework and preferred reporting items as per the preferred reporting items for systematic reviews and meta-analyses extension for scoping reviews checklist. Eight electronic databases (PubMed, EMBASE, Cochrane Library, Koreanstudies Information Service System [KISS], KMBASE, Oriental Medicine Advanced Searching Integrated System [OASIS], Research Information Sharing Service [RISS], ScienceON) were searched to identify articles with the search terms "craniosacral therapy" and "cranial osteopathy" until December 2021. Results Forty-five studies were eligible as per our inclusion criteria. Most research studies (n=44) were conducted in the field of medicine and pharmacy, especially in rehabilitation medicine (n=16). As a result of the study design, randomized controlled trials (n=20) were the most common, and chronic pain (n=9) was the most frequently targeted disease, followed by headache (n=7). Thirty-two studies suggested interventions and 20 studies used Upledger's 10-step protocol. The average duration of craniosacral therapy was 41 min per session, administered 1.4 times per week. Outcome measurements were analyzed and categorized with the examination procedure for the patient. Conclusions This is the first scoping review of craniosacral therapy in Korea, and we believe that our findings could support its utility as Chuna. In the future, more studies should be conducted to establish the evidence of clinical efficacy of craniosacral therapy and develop standard techniques in Korean medicine.

• Journal of Korean Neurosurgical Society
• /
• 제65권4호
• /
• pp.539-548
• /
• 2022

Objective : Although full-endoscopic lumbar interbody fusion (Endo-LIF) has been tried as the latest alternative technique to minimally invasive transforaminal lumbar interobody fusion (MIS-TLIF) since mid-2010, the evidence is still lacking. We compared the clinical outcome and safety of Endo-LIF to MIS-TLIF for lumbar degenerative disease. Methods : We systematically searched electronic databases, including PubMed, EMBASE, and Cochrane Library to find literature comparing Endo-LIF to MIS-TLIF. The results retrieved were last updated on December 11, 2020. The perioperative outcome included the operation time, blood loss, complication, and hospital stay. The clinical outcomes included Visual analog scale (VAS) of low back pain and leg pain and Oswestry disability index (ODI), and the radiological outcome included pseudoarthosis rate with 12-month minimum follow-up. Results : Four retrospective observational studies and one prospective observational study comprising 423 patients (183 Endo-LIF and 241 MIS-TLIF) were included, and the pooled data analysis revealed low heterogeneity between studies in our review. Baseline characteristics including age and sex were not different between the two groups. Operation time was significantly longer in Endo-LIF (mean difference [MD], 23.220 minutes; 95% confidence interval [CI], 10.669-35.771; p=0.001). However, Endo-LIF resulted in less perioperative blood loss (MD, -144.710 mL; 95% CI, 247.941-41.478; p=0.023). Although VAS back pain at final (MD, -0.120; p=0.586), leg pain within 2 weeks (MD, 0.005; p=0.293), VAS leg pain at final (MD, 0.099; p=0.099), ODI at final (MD, 0.141; p=0.093) were not different, VAS back pain within 2 weeks was more favorable in the Endo-LIF (MD, -1.538; 95% CI, -2.044 to -1.032; p<0.001). On the other hand, no statistically significant group difference in complication rate (relative risk [RR], 0.709; p=0.774), hospital stay (MD, -2.399; p=0.151), and pseudoarthrosis rate (RR, 1.284; p=0.736) were found. Conclusion : Relative to MIS-TLIF, immediate outcomes were favorable in Endo-LIF in terms of blood loss and immediate VAS back pain, although complication rate, mid-term clinical outcomes, and fusion rate were not different. However, the challenges for Endo-LIF include longer operation time which means a difficult learning curve and limited surgical indication which means patient selection bias. Larger-scale, well-designed study with long-term follow-up and randomized controlled trials are needed to confirm and update the results of this systematic review.

• 한방재활의학과학회지
• /
• 제32권4호
• /
• pp.19-32
• /
• 2022

Objectives This scoping review aimed to investigate the domestic clinical research trends of motion-style acupuncture treatment (MSAT), identify diseases and symptoms for which MSAT is used, summarize specific methods of MSAT, and suggest the direction of future studies. Methods The study was conducted in accordance with a previously specified methodology, using the preferred reporting items for systematic reviews and meta-analyses extension for scoping reviews (PRISMA-ScR) checklist. We searched nine electronic databases for studies on MSAT reported till March 21, 2022. The search terms were 'kinematic acupuncture,' 'MSAT,' 'motion style acupuncture,' and 'motion style treatment.' Results A total of 29 studies were included in our analyses; of them, 23 (79.3%) were before-after studies. Lumbosacral disease was the most common for which MSAT was applied (n=16). The frequency and duration of treatments differed depending on the researchers, and local acupoints (including ashi points) were used in 22 (75.9%) studies. In most cases, the method of mobilizing the joint or stretching the muscle in the disease area was used after inserting the acupuncture; however, in 7 studies, gait exercise was used. Most studies used MSAT in combination with other treatments. Conclusions This study supports the direction of future research by presenting the methodological applications of MSAT. To increase its clinical applicability, studies with a high level of evidence investigating the application to various body part, standardization and safety of MSAT are necessary.

• 한국학교ㆍ지역보건교육학회지
• /
• 제24권4호
• /
• pp.39-50
• /
• 2023

Objectives: This study aimed to provide a scoping review of the impact of COVID-19 on people with disabilities. Methods: PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) Group's key questions (PICO) for systematic reviews, a literature search was conducted from January 1, 2020 to June 30, 2023 using the "AND" search formula. The databases used were Korea DB: RISS, SCIENCEON, and KoreaMed, and International DB: PubMed, CINAHL, and Embase. Results: Among a total of 22 selected articles, 4 studies were published in korea journals: 3 were survey studies (75.0%), 1 was an analysis study (25.0%), and 18 studies were published in international journals. Through a literature review, we confirmed the differences in difficulties between PwD (People with Disability) and PwoD (People without Disability) in the COVID-19 situation, differences by disability type, and post-COVID-19 impact. In order to examine this systematically and objectively, the results were examined by dividing them, which are components based on the International Classification of Functioning, Disability and Health (ICF). Conclusion: In order to respond well to crises and establish effective health policies in similar pandemic situations in the future, understanding and exploration of more diverse types and areas of disability are necessary. In addition, the development and application of appropriate health education and health promotion programs for disability type and ICF component area are required. In addition, it is necessary to develop and apply appropriate health education and health promotion programs tailored to the type of disability and ICF component area.

• 한국식품위생안전성학회지
• /
• 제29권4호
• /
• pp.305-311
• /
• 2014

본 연구는 정량적 미생물 위해평가(Quantitative microbial risk assessment: QMRA)에 절대적으로 필요한 9종의 식중독 세균, 2종의 바이러스, 1종의 원생동물에 대한 최소 감염량(minimum infective dose)을 선정한 연구이다. 주요 식중독 미생물들의 최소 감염량을 선정하기 위하여, 1980년부터 2012년까지 PubMed, ScienceDirect database 등에서 주요 식중독 미생물들의 최소 감염량 및 위해평가 자료 82종을 수집하였다. 수집된 자료는 메타분석(mata-analysis)에서 사용되고 있는 relative frequency(fi, 상대빈도 값)를 계산하여 가장 적정한 최소 감염량을 추정 및 선정하였다. 주요 식중독 미생물들의 최소 감염량은, B. cereus $10^5cells/g$ (fi = 0.32), C. jejuni 500 cells/g (fi = 0.57), Cl. perfringens $10^7cells/g$ (fi = 0.56), Pathogenic E. coli 중 EHEC 10 cells/g (fi = 0.47), ETEC $10^8cells/g$ (fi = 0.71), EPEC $10^6cells/g$ (fi = 0.70), EIEC $10^6cells/g$ (fi = 0.60), L. monocytogenes $10^2{\sim}10^3cells/g$ (fi = 0.23), Salmonella spp. 10 cells/g (fi = 0.30), Shigella spp. 100 cells/g (fi = 0.32), S. aureus $10^5cells/g$ (fi = 0.45), V. parahaemolyticus $10^6cells/g$ (fi = 0.64), Hepatitis A virus $10{\sim}10^2particles/g$ (fi = 0.33), Noro virus 10 particles/g (fi = 0.71), C. pavum $10{\sim}10^2oocyst/g$ (fi = 0.33)으로 나타났다. 본 연구결과는 향후 국내 QMRA를 통한 위해수준 추정결과의 정확성을 향상시키는데 기여할 수 있을 것으로 기대된다.