• 설비공학논문집
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• 제12권9호
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• pp.853-859
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• 2000

In this study, low temperature waste heat recovery heat exchanger was developed using a principle of self-excited oscillating heat pipe. The heat exchanger of serpentine type was composed of extruded flat aluminum tube with 6 channels (3 nm$\times$ 2.75nm) and louvered fin. The heat transfer area density of heat exchanger was $331.9 m^2/m^3$. Working fluid is R141b and charge ratio was 40% by volume. Heat transfer rate and the effectiveness of heat exchanger was primary concern of this study. As a result, the effectiveness of heat exchanger was about 0.4-0.67, and recovered waste heat rate was about 4.5 kW per one unit of heat exchanger.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2003년도 ICCAS
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• pp.752-757
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• 2003

Recently, 3D structure recovery through self-calibration of camera has been actively researched. Traditional calibration algorithm requires known 3D coordinates of the control points while self-calibration only requires the corresponding points of images, thus it has more flexibility in real application. In general, self-calibration algorithm results in the nonlinear optimization problem using constraints from the intrinsic parameters of the camera. Thus, it requires initial value for the nonlinear minimization. Traditional approaches get the initial values assuming they have the same intrinsic parameters while they are dealing with the situation where the intrinsic parameters of the camera may change. In this paper, we propose new initialization method using the minimum 2 images. Proposed method is based on the assumption that the least violation of the camera’s intrinsic parameter gives more stable initial value. Synthetic and real experiment shows this result.

• 가정∙방문간호학회지
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• 제27권3호
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• pp.344-355
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• 2020

Purpose: Recovery has a growing influence on policy for individuals with mental illness and their families. This study was designed to examine the meaning of recovery from the perspectives of community-dwelling patients with mental illness and their families. Methods: Using a descriptive qualitative approach, in-depth, face-to-face interviews were conducted on 24 adults (14 patients with mental illness and 10 family members). All interviews were audiotaped, transcribed and analyzed using thematic analysis. Results: The findings showed that recovery for the patients with mental illness suggested gradual changes by individual will and self-awareness, the relationship with both their family and self-help group, and the support of a therapeutic environment. Seven primary themes emerged from the analysis: improving insight on illness, strong will toward hope, discovering changed myself, helping each other together, gradual influence of positivity, being oriented to a therapeutic setting, and recognizing of home as a calm place. Conclusion: The findings of this study revealed that based on the conceptual elements of recovery of the patients with mental illness and their families, we expect to improve the systematic, comprehensive, and quality mental health services.

• 대한간호학회지
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• 제35권6호
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• pp.1025-1035
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• 2005

Purpose: The purpose of this study was to explore the experiences of recovery from disease in the patients doing a kind of Buddhist meditation, and to develop a grounded theory about meditation. Method: Data was collected by an in-depth interview using tape-recordings from sixteen participants doing meditation. The data was analyzed using the grounded theory method proposed by Strauss and Corbin(1998). Result: The core category was discovering the true self. The participants began to do meditation because of their disease. They experienced obstacles due to incomplete religious acceptance. However, their faith grew gradually based on religious experiences that were indescribable. Finally, they entirely trusted the inner healer, which is emphasized in meditation. The strategies that they used were self reflection and seeking help for accepting deep meditation. They were stabilized in physical, psychological and social daily living. The processes of discovering the true self were identified as entering religious discipline, embodying religious discipline, self-accomplishing religious faith, and recovering mind-body health. Conclusion: This study provided the understanding of mind-body integration. Empirical research may be needed to prove scientifically the effects of meditation.

• 한국도서관정보학회지
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• 제42권3호
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• pp.251-270
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• 2011

본 연구의 목적은 SST(Self-Service Technology)기반 서비스 이용자 관련 연구를 개관하고 귀인이론을 통해 이용자에 의해 발생되는 서비스실패와 이에 대한 회복전략을 이해하는데 있다. 연구목적을 달성하기 위해 사적영역에서 논의되고 있는 SST기반 서비스의 특성 및 이용자연구를 문헌조사를 통해 살펴본 결과 도서관 SST기반 서비스도 일반적인 SST기반 서비스와 크게 다르지 않음을 발견하였다. 일반적인 서비스와 다른 특성을 지니는 SST기반 서비스의 경우 이용자에 의한 서비스 실패가 발생했을 경우 적합한 회복 전략은 무엇인지를 귀인이론을 기초로 하여 제시하였다. 연구결과 도서관 SST기반 서비스를 비롯한 SST기반 서비스의 이용자에 의한 실패를 회복하기위한 전략은 서비스자체의 기술적 품질을 향상시키는 것이 중요한 것으로 나타났다

• International Journal of Computer Science & Network Security
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• 제24권3호
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• pp.38-42
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• 2024

In this paper, we analyze the security of a self-recovery fragile watermarking scheme proposed by C. Wang et al. An attack against C. Wang et al.'s scheme is demonstrated. The theoretical and experimental results show that the proposed scheme is not secure against attacks.

• 가정∙방문간호학회지
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• 제19권1호
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• pp.46-54
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• 2012

Purpose: The purpose of this study is to analyze the concept of recovery in relation to those living with mental illness and provide a better understanding to the definition, perspectives, and paradigm of recovery in phenomenon, as a conceptual knowledge. Methods: A literature review was conducted to define the concept of recovery from a mental illness by using key words, "recovery", "mental health and illness", "concept analysis" and "recovery-oriented nursing", and searching the Cumulative Index to Nursing and Allied Health Literature, PubMed, Cochrane library and RISS4U database. Concept analysis of recovery was done, by using the Walker and Avant's framework of concept analysis. Results: Attributes of recovery for those living with mental illness included regain, life reconstruction, hope, adjustment, and health. Antecedents of recovery from mental illness included instilling hope, recovery vision, belief, peer support, recovery-oriented services, empowerment, personal accountability, education, human rights and culture. The consequences, as meanings of recovery included self-esteem, hopeful life, positive adjustment, and healthy life. Conclusion: Concept of recovery is important for a nurse to understand when caring for a person living with mental illness. This concept of recovery from mental illness may apply to future studies to develop a recovery-oriented nursing intervention.

• 재활간호학회지
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• 제17권2호
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• pp.64-71
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• 2014

Purpose: The purpose of this study was to identify the quality of recovery and influential factors on the quality of recovery after cardiac surgery. Methods: 198 patients undergone cardiac surgery were asked to fill in a self-reported questionnaire about the quality of recovery, anxiety, depression including social support at discharge. The collected data were analyzed with mean, standard deviation, correlation and stepwised multiple regression. Results: The mean scores of quality of recovery at discharge after cardiac surgery was 2.04 on a 3 point scale. Influential factors on the quality of recovery after cardiac surgery were depression(p=.001) and anxiety(p=.027), which disclosed 44.2% of explanation. Depression was the most influential factor. Conclusion: The influential factors on the quality of recovery at discharge after cardiac surgery were depression and anxiety. More studies will be required to reduce depression and anxiety in patients undergone cardiac surgery.

• 한국콘텐츠학회논문지
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• 제21권5호
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• pp.981-995
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• 2021

본 연구는 단주를 유지하고 있는 알코올 사용장애자의 단주기간에 따른 인구사회학적 특성과 알코올의존 회복, 삶의 질, 임파워먼트, 자아존중감의 차이를 확인하고 그 관계를 비교 연구하였다. 연구대상자는 전국 7개 지역을 중심으로 알코올 사용장애로 진단받은 후 단주 중인 알코올 사용장애자 207명이었다. 선행연구 결과를 바탕으로 207명을 단주 1년 미만, 1년-5년 미만, 5년 이상으로 구분하여 분석한 결과, 집단 간 차이에 영향을 주는 인구사회학적 특성은, 성별, 나이, 결혼 여부, 경제활동 여부였고, 1년 미만의 단주자들보다 1년 이상 단주를 유지하는 단주자들의 알코올의존 회복, 삶의 질, 임파워먼트, 자아존중감 모든 요인에서 높은 점수가 확인되었다. 그리고 단주기간을 불문하고 모든 단주자들에게서 알코올의존 회복, 삶의 질, 임파워먼트, 자아존중감이 서로 유의미한 양의 상관관계를 보였다. 따라서 본 연구 결과를 통해 장기적인 단주에 영향을 주는 요인들과 단주의 효과를 알 수 있었고 이런 요인들을 고려한 알코올의존 회복 프로그램이나 치료적 중재의 필요성을 제안하였다.

• 한국콘텐츠학회논문지
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• 제21권1호
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• pp.698-709
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• 2021

본 연구의 목적은 알코올중독자의 A.A.몰입이 회복에 어떻게 영향을 미치며 단주자기효능감의 매개효과에 대해 검증하는 것이다. 이를 위해 전국의 A.A.에 참여하고 있는 알코올중독자 554명을 대상으로 구조방정식 모형을 활용하여 분석을 실시하였다. 그 결과 첫째, A.A.에 참석하는 사람들의 A.A.몰입도가 높아질수록 그들의 회복 정도도 큰 것으로 나타나 A.A.몰입이 회복에 미치는 직접 효과가 존재하였다. 둘째, A.A.몰입도는 회복에 영향을 미치는데 있어 단주자기효능감의 부분매개효과가 존재하였다. 셋째. A.A.몰입도가 단주자기효능감을 매개로 회복에 이르는 경로에서 성별 및 연령에 따른 차이가 있는지를 살펴보았을 때, 남녀 집단의 차이는 나타나지 않았으며 연령에 따른 차이가 존재하였다. 본 연구는 알코올중독자의 A.A.참여를 통해 회복을 도울 수 있는 다양한 사회복지적 방안들에 대해 제시하고 특히, 성별과 연령에 따라 차별화된 개입전략을 논하였다는데 의의가 있다.