• Nuclear Engineering and Technology
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• v.49 no.2
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• pp.426-433
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• 2017

This paper describes the development process, the innovative techniques used and insights gained from the latest integrated, full scope, multistate Level 2 PSA analysis conducted at the Leibstadt Nuclear Power Plant (KKL), Switzerland. KKL is a modern single-unit General Electric Boiling Water Reactor (BWR/6) with Mark III Containment, and a power output of $3600MW_{th}/1200MW_e$, the highest among the five operating reactors in Switzerland. A Level 2 Probabilistic Safety Assessment (PSA) analyses accident phenomena in nuclear power plants, identifies ways in which radioactive releases from plants can occur and estimates release pathways, magnitude and frequency. This paper attempts to give an overview of the advanced modeling techniques that have been developed and implemented for the recent KKL Level 2 PSA update, with the aim of systematizing the analysis and modeling processes, as well as complying with the relatively prescriptive Swiss requirements for PSA. The analysis provides significant insights into the absolute and relative importances of risk contributors and accident prevention and mitigation measures. Thanks to several newly developed techniques and an integrated approach, the KKL Level 2 PSA report exhibits a high degree of reviewability and maintainability, and transparently highlights the most important risk contributors to Large Early Release Frequency (LERF) with respect to initiating events, components, operator actions or seismic component failure probabilities (fragilities).

• Journal of Educational Research in Mathematics
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• v.13 no.1
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• pp.25-55
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• 2003

In the school mathematics, the negative numbers have been instructed by means of intuitive models(concrete situation models, number line model, colour counter model), inductive-extrapolation approach, and the formal approach using the inverse operation relations. These instructions on the negative numbers have caused students to have the difficulty in understanding especially why the rules of signs hold. It is due to the fact that those models are complicated, inconsistent, and incomplete. So, students usually should memorize the sign rules. In this study we studied on the didactical phenomenology of the negative numbers as a foundational study for the improvement of teaching negative numbers. First, we analysed the formal nature of the negative numbers and the cognitive obstructions which have showed up in the historic-genetic process of them. Second, we investigated what the middle school students know about the negative numbers and their operations, which they have learned according to the current national curriculum. The results showed that the degree they understand the reasons why the sign rules hold was low Third, we instructed the middle school students about the negative number and its operations using the formal approach as Freudenthal suggest ed. And we investigated whether students understand the formal approach or not. And we analysed the validity of the new teaching method of the negative numbers. The results showed that students didn't understand the formal approach well. And finally we discussed the directions for improving the instruction of the negative numbers on the ground of these didactical phenomenological analysis.

• Journal of Physiology & Pathology in Korean Medicine
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• v.29 no.5
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• pp.353-360
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• 2015

In a essay that was published on 'Science' in December 2014 as a part of the supplement "The Art and Science of Traditional Medicine," the eastern and western medical theories are discussed with reference to the model-dependent realism suggested by Stephen Hawking and Leonard Mlodinow. This paper examines what the model-dependent realism is, and how it affects the future direction of researches in traditional Korean medical theories. The model-dependent realism holds a meaning in that it puts traditional medical theories in a perspective of models, and allows for application of recent studies in scientific philosophy for researches in traditional medical theories. Especially, the model studies by R. Giere et al. will help elaborate the traditional medical theories from a model perspective. From a model perspective, the 'visceral manifestation', 'meridian and collateral', 'qi-blood', 'eight principles' and 'constitution' theories of traditional medicine have the potentials to develop into valid models, and the traditional medical theory's phenomenological and holistic perspective distinguishes it from western medicine, giving it a competitive edge. In addition, the epistemological pluralism of model-dependent realism can serve as an alternative to relativism or rationalism perspective which put eastern and western medicine in opposition until now.

• Research in Community and Public Health Nursing
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• v.15 no.2
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• pp.323-331
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• 2004

Purpose: To examine nursing students' experiences in visiting care practice in community. Method: According to phenomenological method and Collaizzi's data analysis, all data were collected from March to June 2002 through written daily reports by 56 students in the visiting care unit of four public health centers. Four researchers had sought the daily reports for significant data. Result: In the research, 118 significant statements were selected and 33 subject groups were organized from the statements. From the 33 groups were identified 10 categories finally. which were as follows: stress, reflecting the nursing identity, considering the meaning of life, importance of family, necessity of social interest, compassion, worth of visiting care, the limits of visiting nursing care, identified characteristics of clients, both sides of the role model. Conclusion: Through visiting care practice, nursing students experienced stress, nursing identity, both sides of role model, and the worth and limits of visiting care, students felt the necessity of systems for lower classes and considering general characteristics of the clients. Above all, they came to have a wider perspective of the society through the practice.

• The Korean Journal of Emergency Medical Services
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• v.8 no.1
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• pp.19-32
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• 2004

This study was conducted to identify an initial fire station experience of EMT students, so to better understand their' practice experience in fire station. The subjects were 28 EMT students of C department of Emergency Medical technology in C city, who were demonstrating at the fire station in C city. This study was approached by phenomenological method, collected data were analyzed by Colaizzi's method, the results were as a follows. From the protocol, 201 significant statements were organized into 93 formulated meanings. From the formulated meanings, 30 themes were identified, organized into 16 theme clusters, and then 7 categories. EMT students got experienced 'tension' in resulting from new training situation and at the field practice, 'comport and gratitude', in feeling of identity and a bond sympathy with senior EMT, in training environment and heartfelt care, 'stress' from lack of knowledge and skill, difficulties in field practice for 24 hours, in dealing with making interpersonal relationship with patient and staffs and from the insufficiency of instruction, 'confidence feeling' from the participation of field treatment, in improving of learning, in self-esteem of EMT job, 'confusing feeling' of conflict of the path in work, 'disappointment and doubt' by the discrepancy between learning and actuality, and disappointment of actuality, 'feeling of lack' based on the passive attitude. The results of this study are to use as basic data for students attending fire station experience for the first time.

• Journal of Home Health Care Nursing
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• v.19 no.2
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• pp.162-172
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• 2012

Purpose: The purpose of this study is to explore the subjective experiences of relapse and treatment among the alcoholics. Methods: Phenomenological methodology was used for the study. Participants were seven people with inpatient alcoholics at the alcohol treatment center at K hospital in K province. Data were collected via in-depth interviews from March to September, 2012 and analyzed using Colazzi's framework. Results: Six themes and seventeen meanings were formulated for the relapse and treatment experiences of participants with alcoholism. Six themes were 'Lack of true insight', 'Lack of strength to live a life', 'Unable to overcome an urge to drink', 'Being drawn away from others', 'Falling into the powerlessness and despair', and 'Being foothold of self-growth'. Conclusion: The results from this study revealed the relapse experiences among alcoholic patients. Therefore, the findings can provide the framework and direction for developing the relapse prevention program for alcoholic patients. In addition, practitioners in the treatment center or hospital need to consider their relapse and treatment experience.

• Korean Institute of Interior Design Journal
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• v.24 no.2
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• pp.117-124
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• 2015

With the modern society approaching, a lot of new paradigms have been created which can be explained by the existing space notions while suspicions on the true essence and existence of space have been raised. Ontology regards as the beginning the cause for a 'Field' which will be faced for the research of the essence of a space where 'being-in-the-world' exists. This study has analyzed the existing method of space construction in the spatial thinking and works of Peter Zumthor who mentioning ontological viewpoint as the physiological background of his works so that the ontological spatial concept may be clarified. The following is the study results. First, in order to construct the structures of his own designing into a 'Field' for experiencing the existential meaning, Zumthor chose a reductive pattern with the entire additional elements removed. The materials leading the subjects to call attention to memory and experience and the methods dealing with it enables the realization of various spatial essences. Second, the ontological event-system is required for the formation of relationship among beings. He tried to create a spatial meaning by introducing external environment into the inside and using the materials reflecting regional features and phenomenological empiricism through the multisensory experience. Third, he applied assimilation/insert/adjustment/formative change as the way of constructing the relationship between site and structure.

• Journal of the Korean Home Economics Association
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• v.49 no.8
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• pp.73-83
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• 2011

This study examined changes in family relationship focusing on the experience of husbands after the birth of their first child. The research questions were as follows: (1) what social and economic changes are experienced by Korean husbands (2) how to reform the dynamic from a dyad to a triad relationship (3) how the relationship changes with the experience of parenthoods. The participants in this research included six men and the data was gathered through half-structured interviews and analyzed using Van Manen's analysis guideline. The results were as: First, there was a distinct financial change to stabilize the role of the couple. Second, the husbands' voluntary participation in house work was influenced by the couples' intimacy. Third, the enriching dialogue between couples was related to becoming parents. Lastly, after child birth, husbands felt less attraction toward their wives as women and the sexual relationship was almost completely controlled by their wives.

• Korean Journal of Adult Nursing
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• v.23 no.5
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• pp.446-459
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• 2011

Purpose: The purpose of this study was to understand the reported experiences of sexuality among Korean women who are breast cancer survivors. Methods: Participants of this study were 12 women who had breast cancer surgery. Data were collected October, 2010 to January, 2011 through in-depth interviews by using tape-recordings. Data were analyzed with Colaizzi's (1978) phenomenological methodology. Results: From significant statements, four categories, ten theme clusters and 32 themes were extracted from the essential meaning of the sexuality experience as reported by the women participants. Within the four categories were 'Negatively changed in sexuality', 'Feeling of great loss as a woman', 'Changed martial relations with husband', and 'Turning to the happy life'. 'Overcoming sexuality caused by distress and feeling of loss' was united from four categories. Conclusion: The results of this study could help contribute to provide educational program on sexuality to improve sexual well-being and quality of life of women with breast cancer survivors and their spouses.

• Korean Journal of Adult Nursing
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• v.26 no.3
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• pp.275-286
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• 2014

Purpose: The purpose of this study was to explore the meaning and essence of good nursing from the perspective of patients undergoing hemodialysis. Methods: The data were collected through in-depth interviews of five hemodialysis patients who have been dialyzed for one year or longer. The data analysis was conducted using the Giorgi's phenomenological method. Results: The findings included six constituents and 13 sub-constituents. The six constituents were 'prompt and skillful response to mitigate distress', 'careful attention to provide relief', 'individualized education to promote self-management', 'an intimate relationship to regain isolated ego', 'warmhearted support to encourage strength to live in a exhausting life', and 'providing of comfortable environment to maintain stability'. Conclusion: From the perspective of the hemodialysis patients, the concept of good nursing should stem from the integration of nurses' scientific knowledge, expert skills, and moral sensitivity. The finding suggests that strategies to develop nursing interventions for hemodialysis patients will be required on the basis of understanding of their sociocultural contexts and familism.