• Journal of the Korean Recycled Construction Resources Institute
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• v.4 no.2
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• pp.203-208
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• 2016

In this study, to clarify the differences rebar corrosion beginning, through the actual corrosion accelerated test in corrosion time and laboratory test chamber of the structure of the marine environment results in both environments, it is an object of correlation coefficient derived. The accelerated corrosion test was carried out by two case, I.e., one is $20^{\circ}C$ of low temperaure codition(case 1), and the other is $65^{\circ}C$ of high temperaute codition(case 2). Whether corroions occurs, it was measures using half-cell potential method. The results indicated that case 2 is to acclerate the corrosion of rebar about 1.7~1.8 times as compared with case 1, thenthe corrosion of rebar embadded in concrete occurred according to the order of OPC60, FA, BS, OPC35. Correlation coefficient between acclerated corrosion test and long-term exposure test, case 1 is 2.45 to 2.94, and case 2 is 4.37~4.99.

• The Journal of Pediatrics of Korean Medicine
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• v.26 no.4
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• pp.32-37
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• 2012

Objectives: The purpose of this study was to obtain some understanding about Korean medicine treatment on language disorder in cerebral palsy for future practice and the research, from the clinical studies. Methods: The literature was searched using the database-China Academic Journals (CAJ). Clinical studies of Korean medicine treatment for language disorder in cerebral palsy, including Randomized controlled trial (RCT), case control study, case series, case report were analyzed. Results: Fifteen Clinical studies met our inclusion criteria; One case study and six case series, one non-randomized controlled trial and seven RCTs. Acupuncture treatment, especially Head acupuncture, was the major treatment for language disorder of cerebral palsy in clinical studies, as it was used in fourteen studies. Acupoint massage, tuina, and acupoint injection were employed as treatment methods in the studies. Acupuncture treatment was used for language disorder of cerebral palsy combined with language therapy and other rehabilitation treatment in many studies. The effectiveness in the treatment groups, regardless of treatment methods, was higher than that of control group in all RCT studies. Conclusions: The results of this study could be used in the practice and the future study about language disorder of cerebral palsy.

• Journal of the Korean housing association
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• v.16 no.3
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• pp.17-26
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• 2005

The purpose of this study is to provide the improvement plans and the future development guidelines to improve the apartment housing remodeling. To achieve this goal, case studies and personnel interviews were conducted. Case Studies were performed on 3 apartment houses which had a remodeling association and personnel interviews were performed on the union presidents of the apartment houses. As a result of this study on the practice of apartment housing remodeling, the problems are as follows; 1) a lack of establishing the specific standards and the operation procedures in terms of the laws and regulations 2) a lack of the residents' right awareness in terms of the maintenance & administration 3) a lack of the funds raising in the case of remodeling in the small. middle size in terms of the finance. According to above results, to improve the apartment housing remodeling, it is showed to be necessary to establish the specific standards and procedures in the laws, regulations and policies, which will be accomplished by real remodeling cases.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2011.11a
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• pp.137-138
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• 2011

Mainly in construction liens to four contractors do not receive your order is caused by construction. This construction does not receive construction compunction to protect the contractor, I guess. On the other hand, the medium and small construction companies and contractors that could threaten the order four can be a problem. In this study, small construction companies to the lien of the lien claim on the issue of case studies have looked for the study. Small construction companies, in your case through the litigation between the lien of the lien litigation perspective, the cause of four orders after the analysis step by step construction was listed in chronological order. Identifying problem was the result of a lien. This study to previous studies regarding the lien on the issue through case studies of one kind of lien was derived for the problem. A follow-up studies and more case studies and interviews are considered necessary in the study.

• The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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• v.33 no.3
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• pp.86-98
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• 2020

Objectives : The purpose of this study is to analyze the Korean medicine treatment on Tinnitus to identify the trend and the effectiveness. Methods : The domestic journal databases(OASIS, NDSL, KISS, KTKP) were used to search for case studies related to the herbal medicine treatment of tinnitus. There was no restriction on the time of publication. A total of 14 papers were selected. Results : Out of 127 articles searched, 14 papers were selected. All of those were case-study or case-series studies. Features of the papers, characteristics of patients studied, herbal medicines, acupuncture, other treatments, evaluation methods and the results were analyzed. Conclusions : This study shows that various medical treatment methods for tinnitus are effectively used in Korean medicine. We hope that this study would give helpful information for tinnitus treatment.

• Journal of Korean Society for Quality Management
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• v.42 no.1
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• pp.111-127
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• 2014

Purpose: Simple part or equipment is necessary TRA(Technology Readiness Assessment) or MRA(Manufacturing Readiness Assessment). But sole maturity like TRA, MRA has limit complex systems or SoS(System of System). Especially complex weapon system need from the System Maturity Point of view. This research shows necessity of SRA(System Readiness Assessment). Methods: In case of complex systems, it is essential to SRA(System Readiness Assessment). For the purpose of calculating SRL(System Readiness Level), TRL and IRL must be calculated. And then SRL can obtain know from equation of TRL and IRL. To prove SRA effectiveness, it is calculated SRL of JTDLS(Joint Tactical DataLink System) programs. Results: SRA procedure is proposed and case study shows as examples of JTDLS programs. Although result of TRA is TRL6, result of SRA is not 0.6. From this research, we can know necessity of SRA. Especially complex systems or SoS(System of System) is essential to SRA. Conclusion: SRA(System Readiness Assessment) is required to overcome limitation of sole maturity and to achieve a successful acquisition of high quality weapon system. This research intended to suggest SRA procedure and case study in complex defense system.

• Journal of Koreanology Reviews
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• v.2 no.1
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• pp.27-31
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• 2023

The purpose of this paper is to study the relationship between Art management and Cultural activities in China from the K-wave case. Research design, data, and methodology: This study used the method of the cases study survey, with the K-wave case in as the survey objects, 3 valid survey sample case were collected in this paper. Results: The two dimensions of art management and cultural activities differently influences from the K-wave, and the influence of availability on customer satisfaction is not significant. Conclusion: The results of this study will provide useful reference for the Art management and Cultural activities in China from the K-wave case. And improve the development of art management and cultural activities in China by improving the K-wave of service quality. Art management can shape urban commercial space in a beneficial way, create a good consumption atmosphere, and enhance the attractiveness and competitiveness of the city. The introduction of art elements into urban commercial space can create a strong cultural atmosphere, so that the city presents a smart look. Art management has a positive impact on K-Wave production and operation activities, which can promote the shaping of art commercial space, the promotion of urban cultural atmosphere.

• KIEAE Journal
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• v.17 no.1
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• pp.63-68
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• 2017

Purpose: Various studies to solve the problem of increased energy consumption in the buildings are being carried out recently. Especially, the economic feasibility and insulation performance of the air-cap have been verified so that various studies regarding the reduction of building energy consumption have been carried out. However, previous studies regarding the air-cap were only carried out based on the verification of its insulation performance according to the size and attachment position of the air-cap. Therefore, the purpose of this study is to suggest a detachable air-cap module for improving the performance of the windows, evaluate the performance based on cooling, heating and light environments and verify its effectiveness through a real-scale testbed. Method: In this study, the energy saving performance in the circumstance where there is no attachment of an air-cap (Case 1), the circumstance where there is the attachment of air-cap on the glass surface of window (Case 2) and the circumstance where there is the attachment of an air-cap on the window frame (Case 3) were compared in order to verify the performance of the detachable air-cap module (Case 4), and the electricity consumption of cooling, heating and lighting equipment to maintain the appropriate indoor temperature and Illuminance for each case was calculated and utilized as indicators for the performance evaluation. Result: The result of this study is as follows. 1) In this study, the detachable air-cap module which was easily detachable through the principle of the magnet was suggested. 2) When Case 4 is applied, the electricity consumption of cooling and heating equipment can be reduced by 27.5%, 13.2% and 3.4% in comparison with Case 1, Case 2 and Case 3 respectively. 3) When the air-cap is applied to the window, the lighting energy consumption increases by 4 % in comparison to the non application of the air-cap, and this factor or aspect should be considered when applying the air-cap. 4) According to the performance evaluation result in consideration of cooling, heating and light environments, Case 4 demonstrates an energy saving ratio of 22.6%, 10.6% and 2.7% in comparison to Case 1, Case 2 and Case 3 respectively, indicating that it is effective for improving the performance of windows.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.8
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• pp.8-13
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• 2018

Nitrogen oxides (NOx) have recently been very influential in the generation of ultrafine dust, which is of great social interest in terms of improving the atmospheric environment. Nitrogen oxides are generated mainly by the reaction of nitrogen and oxygen in air in a combustion gas atmosphere of high temperature in a combustion apparatus such as thermal power generation. Recently, research has been conducted on the combustion that recirculates the exhaust gas to the cylindrical burner by using a piping using a Coanda nozzle. In this study, three types of burners were carried out through computational fluid analysis. Case 1 burner with the outlet of the combustion gas to the right, Case 2 burner with both sides as gas exit, Case 3 burner with left side gas exit. The pressure, flow, temperature, combustion reaction rate and distribution characteristics of nitrogen oxides were compared and analyzed. The combustion reaction occurred in Case 1 and Case 2 burner in the right direction with combustion gas recirculation inlet and Case 3 burner in the vicinity of mixed gas inlet. The temperature at the outlet was about $100^{\circ}C$ lower than that of the other burners as the Case 2 burner was exhausted to both sides. The NOx concentration of Case 1 burner at the exit was about 20 times larger than that of the other burners. From the present study, it could be seen that it is effective for the NOx reduction to exhaust the exhaust gas to both side gas exits or to exhaust the exhaust gas to the opposite direction of inlet of recirculation gas.

• The Journal of Information Technology and Database
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• v.8 no.2
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• pp.137-159
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• 2001

This study provides a thorough methodology for IT Investment evaluation. A software tool to support the evaluation process was introduced along with a case study. The software supports the methodology that consists of 7 phases : Target analysis, ldentifying IT measures, Measuring IT impact, Assessing business value, Analyzing the decree of realization, Cost-benefit analysis, and Reporting. The case study showed that the software (CAFA) was a very useful tool supporting both decision-making and post-implementation reviews of IT investment.