• Title/Summary/Keyword: Preliminary Feasibility

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A Preliminary Study Protocol to Evaluate Patient Outcomes, Feasibility, Preliminary Effectiveness, Safety and Economic Evaluation of Korean Medicine Treatment for Periodontal Disease (치주질환에 대한 한의치료의 환자성과, 연구 가능성, 예비 효과, 안전성 및 경제성 평가를 위한 예비 연구 프로토콜)

  • Jiyun Lee;Kyungsun Han
    • The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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    • v.37 no.2
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    • pp.14-26
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    • 2024
  • Objectives : The purpose of this study is to assess the feasibility of conducting a study on traditional Korean medicine treatments for periodontal diseases, specifically gingivitis and mild periodontitis. Methods : This study will employ a randomized, controlled, parallel-group design. Subjects with gingivitis and mild periodontitis will be recruited in one university hospital. In total, 45 subjects will be randomized into three arms (Acupuncture therapy group, herbal mouthwash group and usual care group), and will be followed up for 4 weeks. We will assess clinical variables such as, pocket depth, bleeding on probing, gingival index, plaque index, visual analog scale, uroqol-5 dimensions-5 levels to analyze changes in microbial flora before and after the intervention. Results : The protocol for this study was approved by the Institutional Review Board (IRB) of Dongguk University Ilsan Oriental Medicine Hospital, and registered with the Korean Clinical Trial Registry on March 29, 2024. Conclusions : This study is the first clinical research on periodontal diseases conducted in a Korean traditional medicine institution. The research aims to broaden the scope of traditional Korean medicine and is expected to serve as crucial data for future large-scale studies.

Analysis of Influencing Item of Green Building Certification;Focused on Energy Part of Commercial Buildings (친환경 인증 사업타당성 영향요인 분석;업무용건축물의 에너지 평가부문을 중심으로)

  • Kook, Dong-Hoon;Kim, Ah-Yung;Han, Kap-Kyu;Kim, Sun-Kuk
    • Proceedings of the Korean Institute Of Construction Engineering and Management
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    • 2007.11a
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    • pp.431-435
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    • 2007
  • Green Building Certification Program, which was first introduced to residential buildings in Korea in 2002, has been put on track. This program is expected to bring about the effect in the economic viewpoint that was based on a life-cycle-cost analysis, not to mention the environmental viewpoint. However, given the fact that the existing model for feasibility analysis focusing on early investment cost can hardly be applicable to the green buildings because of lacking the life-cycle-cost reduction factor, it remains still difficult to conduct an objective evaluation. The study thus was intended to identify the factors that should be additionally considered in conducting the feasibility study to be implemented through the analysis of the certification items of green buildings as a preliminary study in structuring the evaluation model for feasibility analysis of green buildings.

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A Preliminary Evaluation of the Economic Feasibility for Building a Multi-purpose Large Oil Spill Response Vessel in South Korea (우리나라 다목적 대형방제선 건조의 경제적 타당성에 관한 예비평가)

  • Chang, Woojin;Pyo, Heedong
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.22 no.4
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    • pp.354-361
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    • 2016
  • While the amounts of oil spill caused by the VLCC Hebei Spirit indicated 2.5 times more than that of the VLCC Sea Prince, the economic, environmental, and social damages derived from the Hebei Spirit spill were estimated to be about 30 times greater than those from the Sea Prince incident. This study consolidates the appropriate justification for building a multi-purpose large oil spill response vessel to allow swift and efficient handling of catastrophic marine pollution events through an analysis of technical and economic feasibility of such a project. The result of the technical feasibility analysis illustrates that a hopper dredge and oil spill response vessel with a capacity of 4,000 tons should be more appropriate. The result of the economic feasibility analysis indicates that under the most conservative estimates the project appears to be slightly impractical, with a benefit/cost ratio of 0.82, in which self-help efforts, however, can facilitate the project. And medium to optimistic estimates present benefit/cost ratios are estimated to be 2.72 and 5.82 respectively, representing apparent economic feasibility.

A Study on the Alternative Evaluation of the High-rise Building Structural System (고층건물 구조시스템의 대안평가 방안 연구)

  • Kim, Yeong-Min;Kim, Chee-Kyeon
    • Journal of the Computational Structural Engineering Institute of Korea
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    • v.23 no.4
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    • pp.425-434
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    • 2010
  • This study presents the alternative evaluation technique for the high-rise building structural system. The alternative evaluation of the structural system is performed in three steps, that is, preliminary evaluation, main evaluation and detailed evaluation. The evaluation categories are composed of structural performance, economic feasibility and term of work. Each categories are composed of detailed items to evaluate of its own. In preliminary evaluation, qualitative evaluation based on experimental knowledge is performed. In main and detailed evaluations, quantitative evaluations based on numeric data are performed. The weighted-sum method is applied to integrate the evaluated results of each items and its importance. The applicability of the proposed method was verified by applying it to the practical buildings and simulate the procedures.

Development of a Railway Accident Scenario Analysis Technique using a Preliminary Hazard Analysis(PHA) and a Quality Function Deployment(QFD) (예비위험분석기술(PHA)과 품질기능전개(QFD) 기법을 이용한 철도사고 시나리오 분석기술 개발)

  • Park Chan-Woo;Kwak Sang-Log;Wang Jong-Bae;Hong Seong-Ho;Park Joo-Nam
    • Proceedings of the KSR Conference
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    • 2005.05a
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    • pp.151-156
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    • 2005
  • The objective of this study is to devise an accident scenario analysis method adept at creating accident scenarios at the Preliminary Hazard Analysis(PHA) step of a hazard analysis for railway system. This approach was inspired by the Quality Function Deployment(QFD) method, which is conventionally used in quality management and was used at the systematic accident scenario analysis(SASA) for the design of safer products. In this study, the QFD provides a formal and systematic schema to devise accident scenarios while maintaining objective. The accident scenario analysis method first identifies the hazard factors that cause railway accidents and explains the situation characteristics surrounding the accident. This method includes a feasibility test, a clustering process and a pattering process for a clearer understanding of the accident situation. Since this method enables an accident scenario analysis method to be performed systematically as well as objectively, this method is useful in building better accident prevention strategies. Therefore, this study can serve to reduce railway accident and be an effective tool for a hazard analysis.

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Computational Flow Analysis and Preliminary Measurement for the CANDU-6 Moderator Tank Model (CANDU-6 감속재 탱크 모형의 유동장 전산해석 및 예비측정)

  • Cha, Jae Eun;Choi, Hwa Lim;Rhee, Bo Wook;Kim, Hyoung Tae
    • Journal of the Korean Society of Visualization
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    • v.10 no.3
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    • pp.30-36
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    • 2012
  • We are planning to construct a scaled-down moderator facility to simulate the CANDU-6 moderator circulation phenomena during steady state operating and accident conditions. In the present work a preliminary experiment using a 1/40 scaled-down moderator tank has been performed to investigate the anticipated problems of the flow visualization and measurement in the planning scaled-down moderator facility. We shortly describe CFD analysis result for the 1/40 scaled-down test model and the flow measurement techniques used for this test facility under isothermal flow conditions. The Particle Image Velocimetry (PIV) method is used to visualize and measure the velocity field of water in a transparent Plexiglas tank. Planar Laser Induced Fluorescence (PLIF) technique is used to evaluate the feasibility of temperature field measurement in the range of $20-40^{\circ}C$ of water temperature using an one-color method.

Feasibility study of an earth-retaining structure using in-situ soil with dual sheet piles

  • An, Joon-Sang;Yoon, Yeo-Won;Song, Ki-Il
    • Geomechanics and Engineering
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    • v.16 no.3
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    • pp.321-329
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    • 2018
  • Classic braced walls use struts and wales to minimize ground movements induced by deep excavation. However, the installation of struts and wales is a time-consuming process and confines the work space. To secure a work space around the retaining structure, an anchoring system works in conjunction with a braced wall. However, anchoring cannot perform well when the shear strength of soil is low. In such a case, innovative retaining systems are required in excavation. This study proposes an innovative earth-retaining wall that uses in situ soil confined in dual sheet piles as a structural component. A numerical study was conducted to evaluate the stability of the proposed structure in cohesionless dry soil and establish a design chart. The displacement and factor of safety of the structural member were monitored and evaluated. According to the results, an increase in the clearance distance increases the depth of safe excavation. For a conservative design to secure the stability of the earth-retaining structure in cohesionless dry soil, the clearance distance should exceed 2 m, and the embedded depth should exceed 40% of the wall height. The results suggest that the proposed method can be used for 14 m of excavation without any internal support structure. The design chart can be used for the preliminary design of an earth-retaining structure using in situ soil with dual steel sheet piles in cohesionless dry soil.

Development and Application of Nursing Service Quality Indicators in Nursing Homes (노인요양시설의 간호서비스 질 평가 지표 개발 및 적용)

  • Chung, Ja-Ne
    • Journal of Korean Academy of Nursing
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    • v.37 no.3
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    • pp.401-413
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    • 2007
  • Purpose: This study was designed to develop Nursing Service Quality Indicators(NSQIs) in nursing homes that would lead to an appropriate evaluation and improvement of nursing service quality. Methods: The preliminary NSQIs were developed through literature reviews and analysis of existing quality indicators. A content validity testing was done twice by using a panel of experts who were from academia and the clinical areas. The final NSQIs were confirmed and applied in three nursing homes to test feasibility. Results: The preliminary NSQIs had 4 domains and 31 indicators. Two content validity testings were performed. The indicators scoring over.80 CVI for each testing were selected and modified by experts' opinions. The final NSQIs consisted of 7 domains and 33 indicators. They were applied in three nursing homes and it was revealed that all the indicators were applicable. Conclusion: In this study, it is shown that this new 'Nursing Service Quality Indicators in Nursing Homes' is suitable for a holistic evaluation of nursing service quality of elderly patients in nursing homes. This NSQIs will be able to provide a basis for establishing nursing care standards and improving the nursing care quality in nursing homes.

A Study on the Essential Elements for Improvement of the Ability of Vocational Training Teachers (공공부문 기술교원의 직업능력 개발을 위한 필요요소 도출에 관한 연구)

  • Cho, Byung-Kwan;Ryu, Gil Ha
    • The Journal of Korean Institute for Practical Engineering Education
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    • v.2 no.2
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    • pp.113-119
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    • 2010
  • The objective of this study is to perform the systematic research and to develop programs for improving the teaching abilities of vocational teachers, so that they can cope with the variant educational condition in accordance with the change of paradigm. Especially vocational teachers who engage in technical education can acquire new knowledge and techniques as well as grasp the trend of the new technologies required in industrial fields. In this study preliminary research for the capabilities of vocational teachers was held and the feasibility was investigated. Upon these investigations the essential elements for the improvement of vocational teachers' capabilities were derived. These will be used as preliminary data for operating curricula.

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Development and demonstration of an erosion-corrosion damage simulation apparatus (배관 침부식 손상 연속모사 장비 개발 및 실증)

  • Nam, Won Chang;Ryu, Kyung Ha;Kim, Jae Hyoung
    • Corrosion Science and Technology
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    • v.12 no.4
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    • pp.179-184
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    • 2013
  • Pipe wall thinning caused by erosion and corrosion can adversely affect the operation of aged nuclear power plants. Some injured workers owing to pipe rupture has been reported and power reduction caused by unexpected pipe damage has been occurred consistently. Therefore, it is important to develop erosion-corrosion damage prediction model and investigate its mechanisms. Especially, liquid droplet impingement erosion(LDIE) is regarded as the main issue of pipe wall thinning management. To investigate LDIE mechanism with corrosion environment, we developed erosion-corrosion damage simulation apparatus and its capability has been verified through the preliminary damage experiment of 6061-Al alloy. The apparatus design has been based on ASTM standard test method, G73-10, that use high-speed rotator and enable to simulate water hammering and droplet impingement. The preliminary test results showed mass loss of 3.2% in conditions of peripheral speed of 110m/s, droplet size of 1mm-diameter, and accumulated time of 3 hours. In this study, the apparatus design revealed feasibility of LDIE damage simulation and provided possibility of accelerated erosion-corrosion damage test by controlling water chemistry.