• Title/Summary/Keyword: Meta study

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A New Analytical Method for Erythromycin in Fish by Liquid Chromatography/Tandem Mass Spectrometry

  • Park, Mi-Jung;Park, Mi-Seon;Lee, Tae-Seek;Shin, Il-Shik
    • Food Science and Biotechnology
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    • v.17 no.3
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    • pp.508-513
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    • 2008
  • Erythromycin has been used to treat Streptococosis, Edwardsiel1osis, Vibriosis, Bacterial enteritis in the cultured fish. In this study, a rapid and effective erythromycin analysis method with new sample treatment protocol and liquid chromatography/tandem mass spectrometry (LC/MS/MS) system for fish products was developed. For the erythromycin extraction from fish muscle, the solvent mixture composed of 0.2% meta-phosphoric acid and methanol (6:4) showed good recovery rate, and the optimum extraction solvent volume was 20 mL. Erythromycin detection using LC/MS/MS were carried out under electro spray ionization (ESI) positive condition and erythromycin mass value 576.2 and 157.9. And the detection limit of the established method was 0.005 mg/kg in fish products. The recovery rate of the developed method applied to the fish species were as following, olive flounder, $87.6{\pm}5.0%$; black rockfish, $87.2{\pm}6.4%$; eel, $85.2{\pm}4.8%$; and rainbow trout, $86.0{\pm}6.2%$. In the established method in this study, the correlation of coefficient values ($R^2$) of erythromycin calibration curve (n=11) was 0.9998.

Differences in Learning Strategies for High School Students by Cluster Type of Hope (고등학생의 희망 군집유형별 학습전략의 차이)

  • Kim, Jin-Cheol;Jang, Bong Seok
    • Journal of Industrial Convergence
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    • v.18 no.3
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    • pp.1-6
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    • 2020
  • The purpose of this study is to theoretically understand hope theory suggested by Snyder and confirm its utility in the school settings. We analyzed the survey data responded by general high school students to find clustering types of hope and mean difference of learning strategies by each type through ANOVA. Results are as follows. First, hope by cluster analysis resulted in four types. Second, hope and learning strategy showed statistically positive correlation. Especially two sub-variables of hope and meta-cognition had highest correlation. Researchers suggested the direction of a future study to investigate structural relation among hope profile, student achievement, adjustment, and etc.

Interaction of ct-DNA with 2,4-Dihydroxy Salophen

  • Azani, Mohammad-Reza;Hassanpour, Azin;Bordbar, Abdol-Khalegh;Mirkhani, Valiollah
    • Bulletin of the Korean Chemical Society
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    • v.30 no.9
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    • pp.1973-1977
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    • 2009
  • In the present study, at first, 2,4-Dihydroxy Salophen (2,4-DHS), has been synthesized by combination of 1, 2-diaminobenzene and 2,4-dihydroxybenzaldehyde in a solvent system. This ligand containing meta-quinone functional groups were characterized using UV-Vis and IR spectroscopies. Subsequently, the interaction between native calf thymus deoxyribonucleic acid (ct-DNA) and 2,4-DHS, was investigated in 10 mM Tris/HCl buffer solution, pH 7.2, using UV-visible absorption and fluorescence spectroscopies, thermal denaturation technique and viscosity measurements. From spectrophotometric titration experiments, the binding constant of 2,4-DHS with ct-DNA was found to be (1.1 ${\pm}\;0.2)\;{\times}\;10^4\;M^{-1}.$ The fluorescence study represents the quenching effect of 2,4-DHS on bound ethidium bromide to DNA. The quenching process obeys linear Stern-Volmer equation in extended range of 2,4-DHS concentration. Thermal denaturation experiments represent the increasing of melting temperature of DNA (about 3.5 ${^{\circ}C}$) due to binding of 2,4-DHS. These results are consistent with a binding mode dominated by interactions with the groove of ct-DNA.

Immediate Effects of Low-Dye Taping on the Ankle Motion and Ground Reaction Forces in the Pronated Rear-Foot During Gait

  • Kim, Sung-shin;Chung, Jae-yeop
    • Physical Therapy Korea
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    • v.23 no.1
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    • pp.72-79
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    • 2016
  • Background: Increased foot pronation causes biomedchanical changes at the lower limbs, which may result in musculoskeletal injuries at the proximal joints. Pronation rear-foot leads to plantar fasciitis, Achilles tendonitis, and posterior tibial tendonitis pathologically. According to the recent meta-analysis, They showed that therapeutic adhesive taping is more effective than foot orthoses and motion control footwear, low-Dye (LD) taping has become the most popular method used by physiotherapists. Objects: The purpose of this study was to determine the immediate effects of LD taping results in different ankle motion and ground reaction force (GRF) as before and after applied LD taping on pronated rear-foot during gait. Methods: Twenty-four participants were recruited for this study. The gait data were recorded using an 8-camera motion capture system and two force platforms. At first, the experiments were carried out that participants walked barefoot without LD taping. And then they walked both feet was applied LD taping. Results: The ankle inversion minimum was significantly greater after LD taping than before LD taping (p=.04); however, in the GRF, there were no significant differences in the inversion maximum or total motion of the stance phase (p=.33, p=.07), or in the vertical (p=.33), posterior (p=.22), and lateral (p=.14) peak forces. Conclusion: The application of taping to pronation rear-foot assists in increased ankle inversion.

Study on Enhancement of Data Processing Algorithm in SaaS Cloud Infrastructure to Monitor Wind Turbine Condition (풍력발전기 상태 감시를 위한 SaaS 클라우드 인프라 내 데이터 처리 알고리즘 개선 연구)

  • Lee, Gwang-Se;Choi, Jungchul;Kang, Minsang;Park, Sail;Lee, JinJae
    • New & Renewable Energy
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    • v.16 no.1
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    • pp.25-30
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    • 2020
  • In this study, an SW for the analysis of the wind-turbine vibration characteristics was developed as an application of SaaS cloud infrastructure. A measurement system for power-performance, mechanical load, and gearbox vibration as type-test class was installed at a target MW-class wind turbine, and structural meta and raw data were then acquired into the cloud. Data processing algorithms were developed to provide cloud data to the SW. To operate the SW continuously, raw data was downloaded consistently based on the algorithms. During the SW test, an intermittent long time-delay occurred due to the communication load associated with frequent access to the cloud. To solve this, a compression service for the target raw data was developed in the cloud and more stable data processing was confirmed. Using the compression service, stable big data processing of wind turbines, including gearbox vibration analysis, is expected.

A Study on Metamorphic analysis and the expressive system in Contempory Architecture (현대 건축의 메타모포시스적 해석과 표현에 관한 연구)

  • Byun, Dae-Joong
    • Korean Institute of Interior Design Journal
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    • v.20 no.1
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    • pp.14-23
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    • 2011
  • The purpose of this study is to analyse the inclinations and expressions in contemporary architecture. Specially, we call this tendency and architectural movements as architectural metamorphosis. Metamorphosis in architecture present the core of the change of Forms and spirits in a change of outward shape and terrestrial identity. As in Ovid's extended dramatic poem of change and transformation, Metamorphoses, all Souls are deathless, and migrates from one form to another. Like these stories in Metamorphoses, Ovid tells the soul never dies, but leaps one form to anther, and can take any shape. So the architectural form, transformation and deformation in contemporary architecture means architectural sensations and cognitions can even approach the soul of form and shape under the transformation. The expressions and design strategies of metamorphosis in comtemporary architecture reveal continuous and sequential formations of space, linear structure with force and vector, rhythmical wavement and folding surface, lively wiggly flows of volumns and objects, and so on. Such qualities came from the periodical needs; separation of structure and surface, poly-surfacial movement, poly-sensual expression and experience, dematerialization and the dematerialized space, formless of non-formal architecture, digital architecture. Architecture of Metamorphosis is the ways and the needs of our period to overcome the static limits prohibits the liberal thoughts, to find the ways toward the opportunities and diversities and to unlock the imaginaire of the contemporary architecture.

Estimating the Time to Fix Bugs Using Bug Reports (버그 리포트를 이용한 버그 정정 시간 추정)

  • Kwon, Kimun;Jin, Kwanghue;Lee, Byungjeong
    • Journal of KIISE
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    • v.42 no.6
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    • pp.755-763
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    • 2015
  • As fixing bugs is a large part of software development and maintenance, estimating the time to fix bugs -bug fixing time- is extremely useful when planning software projects. Therefore, in this study, we propose a way to estimate bug fixing time using bug reports. First, we classify previous bug reports with meta fields by applying a k-NN method. Next, we compute the similarity of the new bug and previous bugs by using data from bug reports. Finally, we estimate how long it will take to fix the new bug using the time it took to repair similar bugs. In this study, we perform experiments with open source software. The results of these experiments show that our approach effectively estimates the bug fixing time.

The analysis of Trends and Contents of Nursing Intervention Research for Cancer Patients in Korea (국내 암환자를 대상으로 한 간호중재 연구현황 및 분석)

  • Hong, Myung Sun;Yom, Young Hee;Kim, Geun Myun
    • Asian Oncology Nursing
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    • v.12 no.4
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    • pp.247-256
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    • 2012
  • Purpose: In this study, the articles which developed and applied nursing interventions for patients with cancer were reviewed and analyzed. Methods: The analysis was performed in light of 171 pieces of literature on nursing interventions for patients with cancer published between 1991 and 2010. Results: Approximately half of the studies have been published between 2006 and 2010. The quasi-experimental designs using nonequivalent control group and no-synchronized design were the most common form of research design among the 71 papers constituting 41.52% of the total. The most commonly used nursing intervention was education (25.2%), followed by massage (20.4%) and exercise (11.5%). The most common outcome variable was anxiety (11.8%), followed by pain (8.0%) and nausea and vomiting (7.3%). Conclusion: The results of this study can provide useful information for the development of nursing interventions in specialized areas. Systematic literature review or meta-analysis is needed in this area.

Topology, shape, and size optimization of truss structures using modified teaching-learning based optimization

  • Tejani, Ghanshyam G.;Savsani, Vimal J.;Patel, Vivek K.;Bureerat, Sujin
    • Advances in Computational Design
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    • v.2 no.4
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    • pp.313-331
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    • 2017
  • In this study, teaching-learning based optimization (TLBO) is improved by incorporating model of multiple teachers, adaptive teaching factor, self-motivated learning, and learning through tutorial. Modified TLBO (MTLBO) is applied for simultaneous topology, shape, and size optimization of space and planar trusses to study its effectiveness. All the benchmark problems are subjected to stress, displacement, and kinematic stability constraints while design variables are discrete and continuous. Analyses of unacceptable and singular topologies are prohibited by seeing element connectivity through Grubler's criterion and the positive definiteness. Performance of MTLBO is compared to TLBO and state-of-the-art algorithms available in literature, such as a genetic algorithm (GA), improved GA, force method and GA, ant colony optimization, adaptive multi-population differential evolution, a firefly algorithm, group search optimization (GSO), improved GSO, and intelligent garbage can decision-making model evolution algorithm. It is observed that MTLBO has performed better or found nearly the same optimum solutions.

A Study on Applying Library 2.0 Using Service-Oriented Architecture and Web Services (SOA 기반 웹서비스의 Library 2.0 적용방안에 관한 연구)

  • Gu, Jung-Eok;Lee, Eung-Bong
    • Journal of Korean Library and Information Science Society
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    • v.38 no.3
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    • pp.297-320
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    • 2007
  • This study examined the main concepts of SOA and Web Services, and conducted technical analysis of major Web Services protocols such as SOAP, REST, SRW/U, and OAI-PMH that realize SOA, and suggested examples of SOAP and REST based Web Services establishments in foreign and domestic libraries respectively. In addition, it introduced application examples of Library 2.0 using Web 2.0 technology in foreign and domestic libraries and suggested how to apply SOA based Web Services protocol in Library 2.0. Finally, it proposed how to put Library 2.0 into practice applying meta-searching system integrating library OPAC, online bookstores, web portal sites and library union catalogs using REST based Open API.

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