• 제목/요약/키워드: Recent Research

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Oscillating Water Column (OWC) Wave Energy Converter Part 1: Fixed OWC

  • Yang, Hyunjai;Jung, Hyen-Cheol;Koo, WeonCheol
    • 한국해양공학회지
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    • 제36권4호
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    • pp.280-294
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    • 2022
  • This study reviews the recent development and research results of a fixed oscillating water column (OWC) wave energy converter (WEC). The OWC WEC can be divided into fixed and floating types based on the installation location and movement of the structure. In this article, the study on a stationary OWC WEC, which is close to commercialization through the accumulation of long-term research achievements, is divided into five research categories with a focus on primary energy conversion research. These research categories include potential-flow-based numerical analysis, wave tank experiments, computational fluid dynamics analyses toward investigation of fluid viscous effects, U-shaped OWC studies that can amplify water surface displacement in the OWC chamber, and studies on OWC prototypes that have been installed and operated in real sea environments. This review will provide an overview of recent research on the stationary OWC WEC and basic information for further detailed studies on the OWC.

최근 2년간 Journal of Korean Academy of Nursing 게재논문 분석-연구 동향, 실험중재, 연구의 근거등급을 중심으로 (Analysis of Research Papers Published in the Journal of the Korean Academy of Nursing-Focused on Research Trends, Intervention Studies, and Level of Evidence in the Research)

  • 신현숙;현명선;구미옥;조명옥;김숙영;정재심;정금희;서문경애;손연정
    • 대한간호학회지
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    • 제40권1호
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    • pp.139-149
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    • 2010
  • This study aimed was done to analyze recent trends in nursing research published in the Journal of Korean Academy of Nursing by focusing on the content of nursing interventions and their level of evidence. Methods: A total of 209 studies published between 2007 and 2008 were reviewed using analysis criteria developed by the researchers. Results: The number of quantitative studies was greater than that of qualitative studies. There was a slight increase in the number of qualitative studies and studies including elderly populations, which reflects the recent population trend in Korea. More randomized controlled trials with a low risk of bias were needed to support more evidence-based nursing practice. Concerning the low rate of ethical consideration, stricter application of research ethics needs to be encouraged. Conclusion: The findings of this study suggest the recent trends in nursing research and the direction of nursing research and review in the Journal.

중국의 최근 비만치료 방법 및 치료율 분석 (Analysis of Recent Chinese Obesity Treatment Method and Curative Rate)

  • 박민주;고영균;임재은
    • 한방비만학회지
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    • 제6권1호
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    • pp.27-43
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    • 2006
  • Objectives : Recently the number of obesity population has grown, the idea recognizing obesity as an obvious disease which needs medical treatments has increased too. Obesity has become a rising and serious issue of public health in many developed countries. In this study, analyzing 15 recent Chinese research papers written about obesity treatment, we tried to understand the recent trend in obesity treatment in China; and examine the special features and curative rates of their treatment. Methods : We searched recent research papers which was related to obesity. Search pool includes 9198 papers on 5 Chinese journal, 2302 papers on zhongyizazhi(中醫雜誌), 1826 papers on zhongsiyijehezazhi(中西醫結合雜紙), 2389 papers on xinzhongyi(新中醫), 1069 papers on shanghaizhongyiyazazhi(上海中醫藥雜紙), 1612 papers on zhejiangzhongyizazhi(淅江中醫藥雜). First, we searched with the term '肥'. Among the search results, we selected the papers containing the term '肥滿' or ', and excluded the other papers which had no direct relation to obesity.(e.g., ' '肥厚性' etc.) In this way, 21 papers were selected, 18 papers satisfied our study object. Among them we adopted 15 clinical papers for our study, excluding 3 experimental papers. Results : Acupuncture therapy; the rate of excellent curative effect ranges from 9.4% to 77.8%, that of curative effect from 68.7% to 94.3%. Herbal therapy; the rate of excellent curative effect ranges from 6.5% to 52.3%, that of curative effect from 72% to 93.8%. Combined method; the rate of excellent curative effect is 44.8%, that of curative effect 83.5%. Conclusions : These results provides evidence that acupuncture therapy is the most effective among acupuncture therapy, herbal therapy and combined method in treatment of obesity. In addition, acupuncture therapy that uses a small number of acupoints and strong stimulation is more effective than any other therapies.

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만성전립선염(慢性前立腺炎)의 연구동향(硏究動向)에 대한 분석(分析) (The Trend of Recent Medical Treatment on Chronic Prostatitis)

  • 정기훈;김철중;조충식
    • 혜화의학회지
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    • 제14권2호
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    • pp.153-158
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    • 2005
  • Objective : We performed this study to understand the trend of recent medical treatment on chronic prostatitis. Methods : We analyzed 20 manuscripts contributed to the Chinese medical journals from 1998 to 2004 that presenting report of recent medical treatment on chronic prostatitis. Results : The results are summarized as follows 1. In clinical cases, we investigate the cause of chronic prostitis was 'ha cho sup yol' 'ki wool' and 'hyul er'. also it combined complex causes. 2. Deep stimulation acu-therapy near prostate was more effective than other acu therapy. 3. External medical treatment was very efficient than other therapy that was rectal injection therapy, fumigation therapy etc. Conclusion : We conclusion that Rectal Injection therapy was clinical effect on chronic prostatitis.

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Behavior, Design, and Modeling of Structural Walls and Coupling Beams - Lessons from Recent Laboratory Tests and Earthquakes

  • Wallace, John W.
    • International Journal of Concrete Structures and Materials
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    • 제6권1호
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    • pp.3-18
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    • 2012
  • Observed wall damage in recent earthquakes in Chile and New Zealand, where modern building codes exist, exceeded expectations. In these earthquakes, structural wall damage included boundary crushing, reinforcement fracture, and global wall buckling. Recent laboratory tests also have demonstrated inadequate performance in some cases, indicating a need to review code provisions, identify shortcomings and make necessary revisions. Current modeling approaches used for slender structural walls adequately capture nonlinear flexural behavior; however, strength loss due to buckling of reinforcement and nonlinear and shear-flexure interaction are not adequately captured. Additional research is needed to address these issues. Recent tests of reinforced concrete coupling beams indicate that diagonally-reinforced beams detailed according to ACI 318-$11^1$ can sustain plastic rotations of about 6% prior to significant strength loss and that relatively simple modeling approaches in commercially available computer programs are capable of capturing the observed responses. Tests of conventionally-reinforced beams indicate less energy dissipation capacity and strength loss at approximately 4% rotation.

Warming Trend of Coastal Waters of Korea during Recent 60 Years (1936-1995)

  • Kang Yong Q.
    • Fisheries and Aquatic Sciences
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    • 제3권3_4호
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    • pp.173-179
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    • 2000
  • Recent changes in the coastal sea surface temperatures (SST) in Korea are studied by time series analysis of daily SST data during the last 60 years (1936-1995) at 18 coastal observation stations of the National Fisheries Research and Development Institute. The climate of coastal SST in Korea are rapidly changing in recent years. General trends of coast SST changes in Korea are as follows. The annual averages of SST are increasing. The annual ranges of SST variation are decreasing. The winter SST are increasing while the summer SST have a decreasing tendency. Climatic changes in coastal SST in recent 30 years (1965-1995) are more pronounced than those in the last 60 years (1936-1995). The observed trend of coast SST implies that the climate in Korea shows a tendency to shift from temperate zone to subtropical zone.

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침 요법을 통한 국내 비만치료의 최근 경향 (Acupuncture Therapy of the Obesity - Current Status in Korea and Recent Developments)

  • 염승철
    • 동의생리병리학회지
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    • 제23권3호
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    • pp.548-553
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    • 2009
  • In this study, after we analyzed 44 recent research paper written about obesity treatement, we tried to understand the acupuncture on the obesity treatment of the recent trend. We searched the recent papers with the key word of obesity, obese, and Acupuncture and are limited since 2004 in the search site KISS, KSI. Recently, acupuncture application for obesity treatment were 6 type. Traditional Acupuncture, Auricular Acupuncture, Electro Acupuncture, Herbal Acupuncture, Chi Acupuncture, and Acupoint Catgut Embedding Therapy. Although acupuncture application were effective method to decrease weight and localized fat, they were critical to evaluate to their effectiveness through strict and scientific clinical trials.