• 한국건설순환자원학회논문집
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• 제4권4호
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• pp.463-469
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• 2016

본 연구에서는 팽창재-팽윤재-결정성장 촉진제로 구성된 자기치유 재료(SH-PO-0)와 칼슘이온 용출을 촉진하는 인산염계 혼화재(PO)를 첨가한 자기치유 재료(SH-PO-5, 15, 30)를 사용한 모르타르의 압축강도 및 투수성능을 평가하였다. SH-PO-0는 OPC 대비 28일 압축강도는 9% 감소하였지만, 투수량 감소비는 OPC 대비 현저히 낮아, 자기치유 재료의 유효성을 확인하였다. PO의 첨가량이 증가함에 따라 압축강도는 감소하고, 초기재령에서 투수성능은 개선되는 경향을 나타내었고, 적정 PO 치환율은 15% 수준이었다. SH-PO-15는 SH-PO-0 대비 28일 압축강도는 8% 이내에서 감소하였고, 초기 재령에서 투수성능이 더욱 개선되었으나, 장기재령까지 이어지지는 않았다. SEM-EDS분석에 의해 SH-PO-15의 칼슘 이온량이 더 많이 고정화되어 있음을 확인하였다.

• KIEAE Journal
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• 제15권2호
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• pp.27-35
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• 2015

Purpose: Healthcare is on the whole a personal and critical service that consumer's use, whereas hospitalization is as a rule painful, because nature nurtures and Sun Light Luminosity for healthcare settings is considered healing. The performance and design of climate responsive buildings such as AKU requires a detailed study of attributes of climate both at micro as well as macro level. The therapeutic value of contact with nature through window view, greenery and landscape is calculated there. Method: A two prong strategy is been devised for this article, at micro level three typical morphologies are analysed by creating same environment of neighboring building on sun shading chart, radiation and temperature range. Since the analysis of local climate helps to determine the design strategies for hospital Healing Environment which is suitable for Karachi climate; in order to track the macro climatic behaviour, a considerable analysis of psychometrics chart for AKU Karachi are designed on Climate Consultant (CC) and analysed by Machine Learning. Climate Consultant proposes different design strategies suitable for Karachi. And on the other hand time wise illumination sources for clinical area which are then measured on psychrometric chart- according to singular space: multi patient admission, secondly: acute ambulatory ward, and tertiary: multi windowed space according to the mushrabiyah and sky light pattern. Result: Our findings support the hypothesis that windowed wall is 75-80% more healing wall; an accelerated evidence was found for healing at macro level if the form of the hospital is designed according to the climatologically preferences, whereas at micro level: the light resource becomes the staff attentiveness determinant. In Conclusion evidence was provided that the actual form of luminosity results consequently in satisfaction while light entering from several set of windows and other sources might be valued if design according to the healing environment. The data added on the sun shading chart to calculate rays entraining into space in patient room equal to 124416.21 Watts/ meter $m^2$ is calculated as precise healing rate-and is confirmed by questionnaire from patients belonging from each clinical stage having different illnesses.

• 한국건설순환자원학회논문집
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• 제10권4호
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• pp.514-522
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• 2022

본 연구에서는 시멘트 복합체에 시멘트계 재료로 구성된 자기치유 캡슐을 적용하여 콘크리트 구조물의 자기치유 성능을 향상시키기 위한 연구의 일환으로 PCC(Powder Compacted Capsule) 크기 및 혼입율에 따른 모르타르의 공학적 특성을 비교ㆍ분석하였다. 이를 위해 PCC 크기 및 혼입율에 따른 모르타르의 유동성, 압축강도, 하중재부하 시험, 탄산화, 초음파속도, 투수 특성 등을 측정하였다. 측정 결과, PCC의 혼입율이 증가할수록 유동성과 압축강도가 증가하였으며, 치유특성 검토를 위해 진행한 하중재부하 시험의 경우 03PC 배합에서 PCC 혼입율이 증가할수록 치유율이 증가하였다. 정수위투수 시험의 경우 PCC를 사용할 경우 유출수량 감소율이 Plain 배합에 비해 최대 35 % 높은것으로 나타났으며, 크기 0.3~0.6 mm의 PCC를 15 % 혼입할 시 모르타르의 균열 치유율 향상에 효과적인 것으로 나타났다.

• 한국건설순환자원학회논문집
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• 제8권4호
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• pp.404-412
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• 2020

본 연구는 무기질 재료인 Calcium sulfoaluminate(CSA), Crystalline admixture(CA) 그리고 Magnesium oxide(MgO)가 포함된 시멘트 모르타르의 물성 및 자기치유성능을 조사하였다. 자기치유성능을 분석하기 위해 모르타르 강도시험, 물투과성 실험을 실시하였으며, 다양한 균열폭 변화는 디지털 광학현미경을 사용하여 측정하였다. 자기치유를 통해 생성된 수화물에 대해서는 X-ray powder diffraction, Thermogravimetry를 통한 성분분석을 실시하였다. 분석결과 CA치환량이 증가 할수록 압축 및 휨 강도는 증가하였다. 하지만 MgO치환 시에는 오히려 CA치환량이 증가 할수록 압축 및 휨 강도는 감소하였다. 회복된 균열부에 생성된 치유물질은 Ca(OH)2, MgCO3, CaCO3으로 확인되었다. CaCO3은 균열부에 생성된 주요 치유 성분으로 나타났으며, Ca(OH)2, MgCO3보다 높은비율을 차지하고 있는 것으로 확인 되었다. 또한, 물 투과성과 균열폭 결과를 통한 최적의 배합은 CSA 8% + CA 1% + MgO 2.5%으로 나타났다.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2018년도 추계 학술논문 발표대회
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• pp.175-176
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• 2018

In this study, the performance of acrylate was evaluated by using acrylate composite waterproof sheet. Through this experiment, the waterproof sheet plays a primary role of waterproofing. When the water leakage occurs, the acrylate reacts with water and expands, and the performance of the self repairing of the damaged part is confirmed by temperature.

• 디지털산업정보학회논문지
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• 제5권1호
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• pp.23-32
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• 2009

Although the web is becoming a widely accepted medium, it provides relatively poor performance and low availability. A cluster consists of a collection of interconnected stand-alone computers working together and provides a high-availability solution in application area such as web services or information systems. Web server clusters require a high-availability service with a proactive and practical fault management. However, as the system complexity grows, it is not easy to meet the requirement. Therefore, web server clusters must have self-fault management capability for meeting high-availability requirement. In this paper, we propose high availability web server clusters using self-healing technique with a minimal human intervention. Our experimental results show that a proposed method can be used to improve the availability of web server clusters.

• 성인간호학회지
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• 제13권4호
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• pp.539-550
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• 2001

Purpose: This ethnography was conducted to describe the meaning of illness of the elderly in traditional folk healing performance. Method: This study was guided by Klienman's explanatory model of health care systems. The fieldwork was conducted in an agricultural clan of Namwon City from January of 1990 to Feburary of 2001. Research data were collected by Ehnographic interview and participant observation. Participants of this study were 10 elders aged 74 years old to 96 years old; two of them were male. The data were analysed with the techniques of taxanomy, flow and decision, and proxemics. Result: The meaning of illness was categorized with four compononts, that is, ritual for life, defeat and failure in power game, humiliating punishment for guilt, and Tal. Conculsion: These meanings were constructed on physical and socio-cultural environment of this clan. The healing strategies were determined based on the meanings of illness. These results can be used to understand the health behavior of the elderly and thus ensure the quality of nursing for the elderly.

• 인간식물환경학회지
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• 제22권5호
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• pp.425-434
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• 2019

This study was conducted to investigate psychological and physiological changes of elderly affected by agro-healing activities. To meet the purpose, we conducted an agro-healing program with 20 elderly participants (average age 77.6±5.84 men and women) and once a week in total seven sessions. The Korean version of the Brief Encounter Psychosocial Instrument (BEPSI-K), Korean version of the Short Form of Geriatric Depression Scale (SGDS-K), participants' satisfaction with the program, Salivettes system method, and blood pressure were measured to find out the effects of agro-healing activities. BEPSI-K decreased by 5% in the high stress group although it was not statistically significant. The result of program satisfaction showed that 75% of the participants are satisfied with these activities. We investigated how many and what kind of chronic diseases the participants have had before they joined the program. As a result, hypertension was most common(35.6%), followed by hyperlipidemia, diabetes, arthritis, lumbago, osteoporosis, and heart disease. Systolic blood pressure after the activities decreased significantly from 144.75mmHg (stage 1 hypertension), to 132.90mmHg(prehypertension stage). As a result of analyzing the correlations between general matters such as age, education level, average income of the participants, psychological scale and number of diseases, it was found that participants' satisfaction had a negative correlation with depression. In conclusion, agro-healing is very useful in relieving stress or lowering blood pressure for the elderly whose most common disease is hypertension. Agro-healing activities are proved to have positive uses in reducing the problems of the modern society with severe issues of the aging population.

• 한국구조물진단유지관리공학회 논문집
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• 제28권4호
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• pp.62-67
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• 2024

이 논문에서는 콘크리트 내 미생물을 보호하는 최적의 미생물 담체로서 세포 친화적이며 높은 수분 흡수율과 미생물의 생체광물형성 조건을 효과적으로 부여하면서 균일한 제작 및 보관이 가능한 키토산 기반 고분자 미생물 비드 담체를 개발·최적화하고 이를 적용한 모르타르의 자기치유성능을 분석하였다. 원형 모양의 미생물 내생포자를 혼입하기 위하여 키토산과 알지네이트 고분자를 조합한 원형 형태의 미생물 비드 담체를 개발하였으며, 담체 내 조성물질의 조절로 탄산칼슘 생성량을 능동적으로 조절할 수 있었다. 키토산을 포함한 하이드로젤 비드담체에서 생체광물 형성량과 결정의 크기가 최대로 나타났으며, 이를 적용한 모르타르 균열의 경우, 균열 발생 후 96시간 이내에 최대균열폭 0.3mm의 균열이 자기치유가 완료됨을 확인하였다.

• 한국정보통신학회논문지
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• 제18권7호
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• pp.1540-1546
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• 2014

인도어 기지국(Indoor BS) 결함으로 인해 발생하는 커버리지홀 문제를 해결하기 위하여, 새로운 프레임 구조와 최적화 기법 기반의 실제적인 알고리즘을 제안한다. 우리의 핵심 공헌은 다음과 같다: 1) 갑작스런 IBS 결함 문제 해결을 위한 힐링(healing) 채널을 가지는 새로운 프레임 구조를 제안하고 2) 최적화 문제의 복잡도 감소를 위한 고정적 IBS 선택에 기반한 효과적인 휴리스틱 자원할당 알고리즘을 제안한다. 시뮬레이션을 통하여 평균 셀 용량과 사용자 공평성 관점에서 기존 알고리즘에 비해 제안 방안이 우수함을 증명한다.