• 한국세라믹학회지
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• 제47권3호
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• pp.223-231
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• 2010

The serious issue of tall building is to ensure the fire-resistance of high strength concrete. The fire resistant finishing method is necessarily essential in order to satisfy the fire resistance time of 3 h required by the law. The fire resistant finishing method is installed by applying a fire resistant material as a method of shotcrete or a fire resistant board to high strength concrete surface. This method can reduce the temperature increase of the reinforcement embedded in high strength concrete at high temperature due to the installation thickness control. This study is interested in identifying the effectiveness of inorganic alumino-silicate compounds including the inorganic admixture such as fly ash and meta-kaolin as the fire resistant finishing materials through the analysis of fire resistance and components properties at high temperature. The study results show that the fire resistant finishing material composed of fly ash and meta-kaolin has the thermal stability of the slight decrease of compressive strength at high temperature. These thermal stability is caused by the ceramic binding capacity induced by alkali activation reaction by the reason of the thermal analysis result not showing the decomposition of calcium hydrate. Inorganic compounds composed of fly ash and meta-kaolin is evaluated to be very effective as the fire resistance material for finishing to protect the concrete substrate by the reason of those simplicity in both application and manufacture. The additional study about the adhesion in the interface with concrete substrate is necessary for the purpose of the practical application.

• 한국융합학회논문지
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• 제7권5호
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• pp.145-153
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• 2016

이 연구는 메타분석을 활용하여 현재 다양한 영역에서 실시되고 있는 수용전념치료 프로그램의 효과에 대해 종합적으로 평가하였다. 메타분석은 통계적인 방법을 활용하여 개입의 크기와 방향을 제시한다. 이를 통해 개입에 대한 종합적 분석이 가능하다. 논문의 선정기준을 통해 총 43편의 연구물을 분석 대상으로 선정하였다. 선정된 33편의 연구물에서 183개의 효과크기를 종합하여 전체효과크기, 하위집단별 효과크기, 메타회귀분석 결과를 제시하였다. 그 결과 수용전념치료 프로그램의 전체 효과크기는 0.704로 나타났다. 이는 중간 이상의 효과크기를 의미한다. 수용전념치료의 효과 영역에 따라 효과크기를 비교한 결과, 정의적 영역, 인지적 영역, 행동적 영역 순으로 효과크기를 나타냈다. 참가자의 특성에 따른 효과크기를 비교한 결과 첫째, 성별에 따른 분석결과, 혼성 집단, 여성 집단, 남성 집단 순으로 효과크기를 나타냈다. 둘째 연령에 따른 분석 결과 일반성인, 대학생(대학원생), 청소년 순이었다. 이러한 연구 결과를 바탕으로 후속연구와 향후 프로그램 운영에 대한 시사점을 논의하였다.

• 한국문헌정보학회지
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• 제43권4호
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• pp.117-137
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• 2009

본 연구는 도서관의 경제적 가치를 실증적으로 측정한 국내 외 42개의 선행연구들을 수집 정리하고, 상이하게 나타난 투자수익률이나 비용편익비율을 어떻게 해석해야 하는지를 메타분석을 통해서 통계적인 방법으로 파악하고자 한다. 메타분석법은 도서관의 경제적 가치측정 연구들이 제시한 수치를 통계적인 방법으로 분석하여 그 결과를 객관적으로 종합하기 위하여 적용되었다. 선행연구를 토대로 6개의 변인(조사시점, 도서관 유형, 연구방법, 혜택범위, 서비스범위, 1인당 GDP)을 도출하였고, 이들을 대상으로 6개의 가설을 설정하였다. 메타 회귀분석 결과, 혜택의 범위(직접효과, 간접효과) 및 국민 1인당 GDP의 수준에 따라 투자수익률의 일관성 있는 예측이 가능하다는 결과가 나타났다. 본 연구는 도서관의 경제적 가치 분야에서 수행된 국내 최초의 메타분석으로서, 이 분야의 연구에서 도출된 결과를 정책결정에 적용하는 데 도움이 될 것으로 기대된다.

• Physical Therapy Rehabilitation Science
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• 제10권1호
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• pp.22-31
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• 2021

Objective: This review aims to analyze the effects of electromechanically assisted walking in patients with cerebral palsy(CP). Design: A systematic review and meta-analysis. Methods: We reviewed systematically using the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) checklist guidelines. The inclusion criteria for this study were all CP patients. The intervention was electromechanically assisted walking. The outcome measures included gait parameters, function, spasticity. Studies excluded from this review were excluded from the review if they were non-English languages and if the study was not published as a full report, and if they were not randomized controlled trials (RCTs) designs. The RevMan 5.4 program was used to evaluate and explain the results. The risk of bias was evaluated independently by two reviewers. The quantitative meta-analysis, including mean differences (MD) and associated standard deviations (SD) from baseline and follow-up assessments, were recorded. Results: A total of 634 articles were searched. Two hundred eighty-nine duplicate articles were excluded, and 345 of 634 originals were left for selection. Of these 74 papers, 44 were out of topic, and 19 reported no mean or standard deviation values. And one was a non-experimental study. Finally, ten studies were included. All 10 RCTs of electromechanically assisted walking were analyzed. The meta-analysis showed a significant improvement in gait cycle (95% CI (confidence intervals), 0.09 to 0.19, I2=0%), Gross Motor Function Measure (GMFM) D (95% CI, 3.27 to 13.17, I2=0%) and GMFM E (95% CI, 0.22 to 6.41, I2=0%). Conclusions: Electromechanically assisted training helps in walking in patients with CP.

• 대한간호학회지
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• 제46권4호
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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.

• Journal of Microbiology and Biotechnology
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• 제14권3호
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• pp.483-489
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• 2004

Pseudomonas sp. S-47 is a bacterium capable of degrading benzoate as well as 4-chlorobenzoate (4CBA). Benzoate and 4CBA are known to be degraded via a meta-cleavage pathway characterized by a series of enzymes encoded by xyl genes. The meta-cleavage pathway operon in Pseudomonas sp. S-47 encodes a set of enzymes which transform benzoate and 4CBA into TCA cycle intermediates via the meta-cleavage of (4-chloro )catechol to produce pyruvate and acetyl-CoA. In the current study, the meta-pathway gene cluster was cloned from the chromosomal DNA of S-47 strain to obtain pCS1, which included the degradation activities for 4CBA and catechol. The genetic organization of the operon was then examined by cloning the meta-pathway genes into a pBluescript SKII(+) vector. As such, the meta-pathway operon from Pseudomonas sp. S-47 was found to contain 13 genes in the order of xylXYZLTEGFlQKIH. The two regulatory genes, xylS and xylR, that control the expression of the meta-pathway operon, were located adjacently downstream of the meta-pathway operon. The xyl genes from strain S-47 exhibited a high nucleoside sequence homology to those from Pseudomonas putida mt-2, except for the xylJQK genes, which were more homologous to the corresponding three genes from P. stutzeri AN10. One open reading frame was found between the xylH and xylS genes, which may playa role of a transposase. Accordingly, the current results suggest that the xyl gene cluster in Pseudomonas sp. S-47 responsible for the complete degradation of benzoate was recombined with the corresponding genes from P. putida mt-2 and P. stutzeri AN10.

• 지역사회간호학회지
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• 제18권1호
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• pp.146-155
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• 2007

Purpose: This study was performed to examine the degree of meta cognition, critical thinking and self-efficacy and to identify correlations among the meta cognition, critical thinking, and self-efficacy of nursing students studying through PBL. Method: The subjects were 140 nursing students who had studied through PBL over three terms at C College. Data were collected from August to September, 2005 using a structured questionnaire and analyzed using SPSS 10.0. Results: The mean score of meta cognition was 40.14 (SD=6.02), critical thinking was 181.46 (SD=14.49), and self-efficacy was 942.93 (SD=167.05). There was a statistically significant positive correlation between meta cognition and self-efficacy and age. Also, meta cognition had a positive correlation with appropriateness to nursing and interest in nursing knowledge, and critical thinking had a positive correlation with appropriateness to nursing, interest in nursing knowledge, interest in lab on campus and interest in clinical practicum. There were statistically significant positive correlations among meta cognition, critical thinking and self-efficacy. Conclusion: Based on above results, further research should be done about many factors influencing nursing students' problem solving abilities for the development and application of many teaching methods for improving nursing students' meta cognition, critical thinking and self-efficacy.

• 한국지능시스템학회:학술대회논문집
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• 한국퍼지및지능시스템학회 2002년도 추계학술대회 및 정기총회
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• pp.375-378
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• 2002

In this paper we propose parallel GA to optimize mutation rate and crossover rate using server-client model. The performance of GA depend on the good choice of crossover and mutation rates. Although many researcher has been study about the good choice, it is still unsolved problem. proposed GA optimize crossover and mutation rates trough evolving subpopulation. In virtue of the server-client model, these parameters can be evolved rapidly with relatively low-grade

• Nutrition Research and Practice
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• 제11권5호
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• pp.419-429
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• 2017

BACKGROUND/OBJECTIVES: The relationship between folate and colorectal neoplasia remains controversial. We examined the association between serum folate concentrations and colorectal adenomas in a case-control study of Korean adults and conducted a meta-analysis. SUBJECTS/METHODS: Our case-control study included 113 pairs of case and control who underwent colonoscopy and provided blood samples. We used multivariable conditional logistic regression models to obtain the odds ratios and 95% confidence interval (CIs). For meta-analysis, we identified the relevant studies by searching the PubMed database up to February 2017, included our case-control study and combined the study-specific relative risks (RRs) using a random-effects model. RESULTS: In this case-control study, we included 58 men and 55 women with colorectal adenomas and sex and fasting status matched the controls. We did not find any significant association between the serum folate levels and colorectal adenomas in either men or women. For meta-analysis, a total of eleven studies were included in our analysis and classified into two groups; polyp clearance group (PC) for the studies that included participants who underwent endoscopies and had their polyps removed at baseline; and no polyp clearance group (NPC) for the studies that included participants whose histories of endoscopies were unknown or who underwent their first endoscopies. Four PC (1,311 cases and 1,672 non-cases) and eight NPC studies (3,501 cases and 11,347 non-cases) were included. The combined RRs (95% CIs) comparing the bottom with the top categories of circulating folate levels were 1.07 (0.97-1.18) for the NPC group but 1.45 (1.16-1.74) for the PC group. CONCLUSIONS: Low circulating folate levels were associated with new adenoma formation.

• Child Health Nursing Research
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• 제9권2호
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• pp.131-139
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• 2003

Purpose: This study was meta-analysis study that it was to analyze the effect of sensory stimulation on preterm infants. Method: The sample of this study is 18 researches of selected by criteria. The conclusion of study was that sensory stimulation of preterm infants is effective. Result: Most large effect size was Katz(1991)'s study(d=1.96), small effect size was Caine(1991), s(d=0.37). Especially multimodal sensory stimulation(d=1.2) was more effective than unimodal sensory stimulation(0.53). Also behavioral variable of preterm infans was most sensitivity indicator. Conclusion: According to the result, the study on sensory stimulation should be research according to the gestational age and birth weight of preterm infants. In addition, the feasible sensory intervention should be develop.