• Title/Summary/Keyword: Failure experience

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A Canine Model of Tracheal Stenosis Using Nd-YAG Laser (Nd-YAG laser를 이용한 기관협착 동물모델의 개발)

  • Kim, Jhin-Gook;Suh, Gee-Young;Chung, Man-Pyo;Kwon, O-Jung;Suh, Soo-Won;Kim, Ho-Joong
    • Tuberculosis and Respiratory Diseases
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    • v.52 no.1
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    • pp.54-61
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    • 2002
  • Background: Tracheal stenosis is an urgent but uncommon disease. Therefore, primary care clinicians have limited clinical experience. Animal models of a tracheal stenosis can be used conveniently for the learning, teaching, and developing new diagnostic and therapeutic modalities for tracheal stenosis. Recently, a canine model of a tracheal stenosis was developed using a Nd-YAG laser. To describe the methods and results of developed animal model, we performed this study. Methods : Six Mongrel dogs were generally anesthetized and the anterior 180 degree of tracheal cartilage of the animal was photo-coagulated using a Nd-YAG laser. The animals were bronchoscopically evaluated every week for 4 weeks and a pathologic evaluation was also made. Results : Two weeks after the laser coagulation, the trachea began to stenose and the stenosis progressed through 4 weeks. All animals suffered from shortness of breath, wheezing, and weight loss in the 3 weeks after the laser treatment, and two died of respiratory failure just before the fourth week. The gross pathologic findings showed the loss of cartilage and a dense fibrosis, which resulted in a fibrous stricture of the trachea. Microscopy also showed that the fibrous granulation tissue replaced destroyed cartilage. Conclusion : The canine model can assist in the understanding and development of new diagnostic and therapeutic modalities for tracheal stenosis.

Factors associated with the survival and marginal bone loss of dental implants: a 5-year retrospective study (임플란트의 생존과 변연골 소실에 영향을 미치는 인자들)

  • Song, Eul-Rak;Lee, Jae-Kwan;Um, Heung-Sik;Park, Se-Hwan;Chang, Beom-Seok
    • Journal of Dental Rehabilitation and Applied Science
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    • v.32 no.4
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    • pp.280-292
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    • 2016
  • Purpose: The purpose of this study was to compare the long-term survival rate and peri-implant marginal bone loss related to multiple risk factors including the clinician's experience. Materials and Methods: Four hundred twenty implants in 146 patients, who had involved a supportive periodontal therapy program every 3 to 6 months and had follow up data for at least 5 years, were selected as the study group. Peri-implant marginal bone loss, data of demographic, implant and surgical characteristics were collected from peri-apical radiographs and chart review. Implant survival was regarded as the remaining with radiographic marginal bone level in excess of 50% of the fixture length for any reason. Results: The cumulative survival rate after 5 years of loading was 94.9%. In binary logistic regression analysis, smoking status (P = 0.033) and presence of spontaneous cover screw exposure (P < 0.001) were significantly related to 5-year survival of implants. In stepwise multiple regression analysis, smoking status (P < 0.001), type of abutment connection (P < 0.001) and implant surface (P = 0.033) were significantly related to peri-implant marginal bone level. And the year of resident was not statistically related to 5-year implant survival in simple logistic regression analysis (P = 0.171). Conclusion: Smoking status, spontaneous cover screw exposure, type of abutment connection and implant surface might influence the implant success. There was no significant correlation between the year of resident and implant failure.

The Effects of a Simulation-Based High Flow Nasal Cannula Oxygen Therapy Training Program on the Knowledge, Clinical Performance and Educational Satisfaction of Clinical Nurses (시뮬레이션기반 고유량산소요법 교육 프로그램이 임상간호사의 지식, 임상수행능력 및 교육만족도에 미치는 효과)

  • Jang, Kyung Soon;Ryu, Kyeong Hee;Kang, Hyeon Mo;Kang, In Hwa;Kwon, Jeong Hui;Lee, Gyeong Mi;Nam, Yun Jung;Seo, Mi Hye;Kim, Ji Yeon;Jung, Ji Yun;Kim, Hyun Ji;Bae, Hye Min
    • Journal of Korean Clinical Nursing Research
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    • v.26 no.1
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    • pp.47-58
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    • 2020
  • Purpose: The aim of this study was to develop a simulation-based High Flow Nasal Cannula Oxygen Therapy training program based on NLN/ISF to identify the effect on knowledge, clinical performance, and educational satisfaction compared to a group who had traditional High Flow Nasal Cannula Oxygen Therapy training after applying it to clinical nurses. Methods: 31 experimental groups and 33 control groups were conducted from August 2019 to September 2019 for inexperienced nurses over 4 months to 5 years with no experience using high-flow oxygen therapy. Educational programs were developed in scenarios according to Airvo2 and Optiflow, such as facilitator, participant, educational condition, design, characteristics, and educational outcomes. The education application was conducted in advanced for knowledge and clinical performance ability after watching therapy video. Since then, a total of 90 minutes have been conducted for respiratory failure theory training, airvo2 and optiflow simulation training, and debriefing. After applying the education, the medical institution measured nurses' knowledge, clinical performance, and education satisfaction. Data were analyzed using descriptive statistics, with the SPSS/WIN 22.0 program. Results: Both knowledge and educational satisfaction were higher in the experimental group than in the control group (t=-14.09, p<.001), (t=-12.99, p<.001). The clinical performance for both use of Optiflow and Airvo2 were higher in the experimental group than in the control group (t=-11.39, p<.001), (t=-11.38, p<.001). Conclusion: Results showed that the simulation-based High Flow Nasal Cannula Oxygen Therapy training was effective with the experimental group having increased scores for every area of this study.

Italian Pension Reform Politics and Labor Unions since 1990's - Social Dialogue, or Mass Struggle? - (이탈리아 연금개혁의 정치와 노동조합의 역할 - 코포라티즘적 협의와 대중적 저항, 두 개의 경로를 중심으로 -)

  • Joo, Eun-sun;Jung, Hae-sik
    • Korean Journal of Social Welfare Studies
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    • no.39
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    • pp.365-393
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    • 2008
  • This research examnied the roles, the strategies and the influence of labor unions on the pension reform. In Italia labor unions were important actors in pension reform politics during 1990s, but in 2004 labor union was excluded from the pension reform. This difference is not only related with diffusion of the leftist party but also the experience of pension benefit retrenchment of the pension reform in 1995 in which labor unions had initiatives. Labor unions choose their strategies, social dialogue or mass struggle, depending on the attitudes of government. After change of government following the failure of the pension reform in 1994 Italian government tried social dialogue. In Dini reform in 1995, laborunions had initiative in making pension reform plan. Labor unions obtained member's approval using membership vote. It had repressed opposition from militant sectors effectively. However Labor unions concentrated on the issues of transition measures and protecting vested rights in seniority pension ignoring problems of contribution evasion of small-firm workers and benefit adequacy of young workers. Even when labor unions leaded social concertation processes and pursued union democracy, labor unions' influences on the pension reform had fundamental limitations.

A study on the current status and improvement suggestions of cultural heritage education in primary school Focused on curriculum analysis and teachers' cultural heritage education experiences (초등학교 문화유산 교육 현황과 방향 제언 - 교육 과정 분석 및 교사의 문화유산 교육 경험을 중심으로 -)

  • HAN, Geonsoo;KIM, Dawon
    • Korean Journal of Heritage: History & Science
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    • v.54 no.4
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    • pp.132-151
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    • 2021
  • The purpose of this study is to analyze the current status of and suggest future improvement practices for cultural heritage education in primary school. We analyzed a primary school textbook for each of five subjects (Korean, social studies, music, art, physical education), surveyed ten teachers with cultural heritage education experience, and analyzed the results. Based on the results, we made the following five suggestions: First, the goal of cultural heritage education should be expanded to foster citizenship. Second, in cultural heritage education, it is necessary to discuss what should be included in the educational content and to organize the content systematically in connection with the student environment, local community environment, and subject content. Third, cultural heritage education should be linked with sustainable development so that cultural heritage can be passed on from the present generation to future generations. Cultural heritage has characteristics, such as universal values of humanity, that transcend national boundaries, regional identities, dialogue and understanding between civilizations, and sources of creativity, and thus serves as the foundation for sustainable development. Fourth, for the effective implementation of cultural heritage education in schools, it is necessary to develop step-by-step teacher training programs. The success or failure of cultural heritage education in schools depends on teacher training. Fifth, the degree to which cultural heritage education is integrated into the curriculum should be strengthened, allowing learners to be educated so that they can cultivate knowledge and critical thinking about cultural heritage, enjoy and protect it, and connect with a sustainable society.

The Limitations of Holocaust Narratives and the Possibility of Healing Narratives Suggested by Smith's Fires in the Mirror ('홀로코스트' 서사의 한계와 스미스의 『거울 속에 반영된 분노』에 제시된 치유 서사의 가능성)

  • Jung, Sun-kug
    • Cross-Cultural Studies
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    • v.43
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    • pp.377-404
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    • 2016
  • In this paper, I intend to focus on the 1991 racial tension and violence portrayed in Anna Devear Smith's book Fires in the Mirror, which was published in book form in 1993. I make use of a series of interviews with many of those involved in the conflicts, which were based on the Jewish Holocaust and the history of African American enslavement. In Crown Heights, the black community and the Jewish community have each suffered terrible losses, but individuals and communities become rhetorically attached to foundational historical traumas that lie at the center of each group's cultural identity rather than try to understand each other's pain. Smith lets this rhetoric dominate Fires in the Mirror by putting contradictory monologues side by side in order to show how discourses on 'slavery' and 'the Holocaust' still have control over specific ethnic communities. My intention is not to delve into the conflict between the Jewish and black communities exclusively. Rather, I attempt to form an understanding of the problems of the critical/theoretical tenets proposed by 'the rhetoric of holocaust,' including the Jewish Holocaust and the black experience of enslavement. Such an understanding will help us see the failure in the theories, illuminating the ways that such rhetoric should have recognized its own violence and helped to forge a new relationship between racism and anti-Semitism. Fires in the Mirror mirrors back to us the ways that 'the Holocaust' betrays the possibility of error to indicate its own susceptibility to blindness. The cracks brought forth by conflicting narratives enable readers to observe wounds being healed and the possibility of new narrative looming up.

Irony in The Locked Room: A Biographer Searching for His Own Identity (『잠긴 방』의 아이러니: 자신의 정체성을 탐구하는 전기 작가)

  • Son, Dongchul
    • English & American cultural studies
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    • v.14 no.1
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    • pp.95-116
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    • 2014
  • Paul Auster's The Locked Room, the third novel of The New York Trilogy, has been examined by many critics in terms of anti-detective fiction or postmodernism. However, this paper focuses upon how the author adopts and utilizes some key elements of the traditional detective novel and its literary tradition. Mystery storytelling is one of Auster's literary strategies and the theme of the double is another. For his novel Auster explores the theme of the double as in Poe's "William Wilson." In The Locked Room, the narrator "I" is described as a shadow of his childhood friend Fanshawe. After Fanshawe's disappearance "I" becomes a literary agent for his friend, and becomes a husband of his friend's wife and a father of his friend's child. Searching for information to write a biography of his friend, he realizes that his friend has always been living inside his skull condemned to a mystical solitude. When Fanshawe appears in the narrator's mind as an image of the door of a locked room, the locked room is also a metaphor for the closed consciousness of the narrator. In his strategy of mystery storytelling, Auster employs the quest of detective fiction as well as the irony of Oedipus the King, where the criminal pursued by the king turns out to be himself. The Locked Room starts with the mystery of Fanshawe's disappearance, and as the novel develops, the narrator pursues numerous clues about his biographical subject like a private eye. Ironically, however, he finds that the ghost of Fanshawe has always been with him and that this is inevitable. As the narrator resolves to quit his life as a double, he contrives to name a strange man Fanshawe as if he tries to turn his biographical subject into a fictional character in the same way Fanshawe has controlled the narrator like a character in Fanshawe's novel. Beaten by the fictional Fanshawe and recovering from a near-death experience, the narrator prepares for his final showdown with Fanshawe. The transcendence of his existence as a double is epitomized by his act to tear off the red notebook handed to him by Fanshawe, which confusingly delivers a message that a life is doomed to be a failure. The narrator's act to cut off Fanshawe's influence bespeaks his breaking out of his locked consciousness and a new start for his life with his own identity.

Operation Case of Mechanical Engineering Subject Applying Systematic Engineering Design Approach: Design of Golf Ball Dispenser (체계적 공학설계 방법론을 적용한 기계공학 교과목 운영 사례: 골프공디스펜서 설계)

  • Ryu, Sun-Joong
    • Journal of Practical Engineering Education
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    • v.14 no.2
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    • pp.235-244
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    • 2022
  • In this study, a class operation case of an engineering design project targeting a golf ball dispenser, a commercial product, was presented. The project was carried out according to the systematic engineering design approach suggested by Kim Jong-won and W. Beitz. This method broadly divides engineering design into four stages: 'product planning → conceptual design → basic design → detailed design'. In particular, the conceptual design stage is divided into 'functional structure diagram → detailed working principle exploration → various design alternatives creation → optimal design selection'. In the conceptual design, the input/output of the golf ball dispenser was defined and a functional structure diagram was prepared for it. Through this process, it was possible to subdivide the functions of the product and to easily explore the working principle for each. The searched working principles are devised as various design alternatives by various combinations, and for each proposal, the advantages and disadvantages were compared with each other to derive the optimal design alternative. In the basic design, the prototype layout was completed through failure mode analysis and the actual prototype was manufactured using it. Through the entire process, students participating in the class will be able to design commercial products in a systematic way and experience manufacturing prototypes within the department of mechanical engineering curriculum.

Clinical Outcomes and Contributors in Contemporary Kidney Transplantation: Single Center Experience (근래의 신장이식 임상성적과 관련인자들: 단일기관 연구)

  • Ahn, Jae-Sung;Park, Kyung Sun;Park, Jongha;Chung, Hyun Chul;Park, Hojong;Park, Sang Jun;Cho, Hong Rae;Lee, Jong Soo
    • Korean Journal of Transplantation
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    • v.31 no.4
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    • pp.182-192
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    • 2017
  • Background: In recent years, introduction of novel immunosuppressive agents and its proper implementation for clinical practice have contributed to improving clinical outcomes of kidney transplantation (KT). Here, we report clinical outcomes of KTs and related risk factors. Methods: From July 1998 to June 2016, 354 KTs (182 from living and 172 from deceased donors) have been performed at Ulsan University Hospital. We retrospectively reviewed the clinical characteristics and outcomes of KT recipients, then estimated graft and patient survival rate were estimated and analyzed risk factors using Cox-regression. Results: The median follow-up period was 53 months (range; 3 to 220 months). The mean ages of recipients and donors were 45.0 years (SD, 12.5) and 44.7 years (SD, 13.6) years, respectively. During follow-up, 18 grafts were lost and 5- and 10-year death-censored graft survival was 96.7% and 91.5%, respectively. Biopsy-proven acute rejection (BPAR) occurred in 71 patients (55 cases of acute cellular rejection and 16 of antibody-mediated rejection). Cox-regression analysis showed that BPAR was a risk factor related to graft loss (hazard ratio [HR], 14.38; 95% confidence interval [CI], 3.79 to 54.53; P<0.001). In addition, 15 patients died, and the 5- and 10-year patient survival was 97.2% and 91.9%, respectively. Age ≥60 years (HR, 6.03; 95% CI, 1.12 to 32.61; P=0.037) and diabetes (HR, 6.18; 95% CI, 1.35 to 28.22; P=0.019) were significantly related to patient survival. Conclusions: We experienced excellent clinical outcomes of KT in terms of graft failure and patient survival despite the relatively high proportion of deceased donors. Long-term and short-term clinical outcomes have improved in the last two decades.

The Study on Success Clues of the Firm Affected by Korean-Japanese 3rd Generation Diaspora CEO's Identity and Values - The Case of "Masayoshi Sohn" in "Softbank" (재일 디아스포라 3세 경영자의 정체성과 가치관이 기업의 성공에 미치는 영향 - 손 마사요시(孫正義)의 "소프트뱅크" 사례)

  • Seo, Bo-Yeong;Park, Hyun-Chae
    • Asia-pacific Journal of Multimedia Services Convergent with Art, Humanities, and Sociology
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    • v.8 no.8
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    • pp.301-312
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    • 2018
  • This The main objective of the study is to examine success clues of the firm influenced by top manager(Masayoshi Sohn) who belongs to Korean-Japanese third generation diaspora. A company's management style depends greatly on the value of its top manager, who also affects success and failure of the firm. SOFTBANK's management style could be influenced by the identity and values of Masayoshi Sohn. The results of the study are as follows ; firstly, his firm remains born-global firm owing to his global value rooted from his de-ethnification and studying in America. Secondly, the firm has challenge spirit owing to his experience of overcoming discrimination and repression during childhood time. and his role model 'Ryoma". Thirdly, there is a roly poly spirit in his firm because he has overcome complex coming from Korean-Japanese third generation diaspora. Finally, his company has human-oriented management philosophy because he has influenced a lot form his grand mother, Won-Cho Lee who emphasized much on human-beings. His identity and values have infiltrated Softbank's management style, which has led to the success of the company. This study will provide you with different viewpoints on the study for Korean-Japanese third generation diaspora. Especially, this study can be meaningful in which it is a study on the third generation of Korean-Japanese diaspora and the global corporations he is running since there are few such studies up to now.