• Proceedings of the KIEE Conference
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• 2005.07b
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• pp.1225-1227
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• 2005

A Bi-2223 tape has beer developed for power applications such as a fault current limiter, a power cable and a superconducting magnetic energy storage system. In such applications, the Bi-2223 tape carries time varying transport current and in addition experiences time varying external magnetic field. It is well known that the external magnetic field not only causes magnetization loss in the Bi-2223 tape, but also drastically increases transport loss due to a so-called "dynamic resistance". We developed an evaluation setup, which can measure transport loss in external at magnetic fields. Using this equipment, we measured the dynamic resistances for various amplitudes and frequencies of an external ac magnetic field perpendicular to the face in the tape. Simultaneously we investigated the effect of an external ac field on transport loss with different experimental conditions. This paper describes test results and discussions on correlation between the dynamic resistance and the transport loss for the Bi-2223 tape.

• Journal of Aerospace System Engineering
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• v.5 no.1
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• pp.30-35
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• 2011

Certification flight test is very risky and there are many hazards. Because the flight test is performed with the aircraft, that is safety and flight characteristics are not proven. And the test items and conditions are critical. If there is loss of aircraft during certification flight test, the certification program, development period can be delayed. Therefore, maintaining safety of the aircraft during flight test is very important. There are not much flight test experiences in Korea. However, developed nations has long history of flight test and experiences of flight test accidents. Based on these experiences, they has developed systematic management methods for the flight test safety. In this study, I would like to introduce safety management and risk assessment of the certification flight test.

• Women's Health Nursing
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• v.7 no.4
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• pp.596-609
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• 2001

This research is intended to study the dietary experiences by college women to promote women's health through the proper diet. The approach method was used grounded theory. The participants were selected 3 colleges in Seoul, Inchon, and Cheongju. The selected 15 women were college students who had a history of dietary experiences or who were on the way of diet at the time of the start of this research. The data were collected from August 2001 to October 2001. Data collecting method was a Focus Group Interview. The data were analysed by the Strauss and Corbin's method(1966). The results were showed that the 236 concepts in the dietary experiences were gathered into 48 sub-categories, eventually being integrated into 17 higher categories. 'Esthetic self-pursuit' is the core phenomenon of the dietary experiences. Such phenomenon is due to subjects physical problems, sense of comparison and desire of weight-loss. In the circumstantial context, the esthetic self-pursuit phenomenon is enhanced by social opinions, aesthetic senses, and the recognition of self-control. The interaction strategy of the esthetic self-pursuit can be intensified and sustained by will power, supporting systems, and accessibility. Through the dietary experiences, the body changes positive or negative figures. Following the sense of success or failure, the diet are sustained or abandoned accordingly. Therefore for the application of promoting health, an intervention strategy should be created a collect organized diet program in a social level not a private level.

• Journal of the Korean Institute of Electrical and Electronic Material Engineers
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• v.18 no.5
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• pp.473-477
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• 2005

A Bi-2223 tape has been developed for power applications such as a fault current limiter, a power cable and a superconducting magnetic energy storage system. In such applications, the Bi-2223 tape carries time varying transport current and in addition experiences time varying external magnetic field. It is well known that the external magnetic field not only causes magnetization loss in the Bi-2223 tape, but also drastically increases transport loss due to a so-called 'dynamic resistance' We developed an evaluation setup, which can measure transport loss in external at magnetic fields. Using this equipment, we measured the dynamic resistances for various amplitudes and frequencies of an external at magnetic field perpendicular to the face in the tape. Simultaneously we investigated the effect of an external ac field on transport loss with different experimental conditions. This paper describes test results ana discussions on correlation between the dynamic resistance and the transport loss for the Bi-2223 tape.

• Journal of Korean Academy of Nursing Administration
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• v.15 no.1
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• pp.81-90
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• 2009

Purpose: The purpose of this study was to identify nurses' perceptions on the older adult's dignity, and identify the risk factors that threaten older adult dignity and nurses' experiences of ethically difficult care in nursing homes. Method: Qualitative content analysis was done using an analysis scheme developed by the investigators. The data were collected from 51 nurses in 10 different nursing homes, who have agreed this study. Using a self-completion questionnaire was developed by the authors. The questionnaire which consisted of 3 items about dignity definitions, risk factors, and experiences on ethical dilemma. Results: The scheme consisted of 14 categories and 33 subcategories of the 261 significant statements. The categories of the dignity perception analyzed were respect, social right and equality. The categories of risk factors analyzed were loss of control, abuse, physical restraint, invasion of privacy, decision limitation and staff qualification. The categories of dignity experiences were abuse, physical restraint, invasion of privacy, staff qualification and decision limitation. Conclusions: This study may suggests interpretation for compromised older adult's dignity and provides data to use in the development of the useful guidelines and educational programs for the nurses in nursing homes.

• Proceedings of the IEEK Conference
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• 2003.07a
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• pp.322-325
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• 2003

In this paper, path loss characteristics in a curved subway tunnel are measured and analyzed. The measurement is carried out in the frequency bands of 2.45GHz and 5.8GHz. A directional antenna is employed for transmission and an omnidirectional antenna for reception. This measurement is performed in the subway tunnel in the vicinity of the Daejon station. The tunnel is curved and its cross section is arch-shaped. The path loss is measured with the location of the transmitter antenna fixed and the receiver antenna moving in the tunnel. The measured path loss ratio is about 0.1dBm/m. Also, the signal received from the antenna located on the outer side of curve in the tunnel experiences weaker path loss.

• The Korean Nurse
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• v.31 no.2
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• pp.70-85
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• 1992

Relaxation technique is an independent nursing intervention used in various stressful situations. The concept of relaxation must be explored for the meaning given by the people in their traditional thought and philosophy. Korean relaxation technique, wanting to become culturally acceptable and effective, is learning to recognize and develop Korean concepts, experiences, and musics of relaxation. This study was aimed at discovering Korean concepts, experiences and musics of relaxation and contributing the development of the relaxation technique for Korean people. The subjects were 59 mursing students, 39 hospitalized patients, 61 housewives, 21 rural residents and 16 researchers. Data were collected from September 4th to October 24th, 1991 by interviews or questionaires. The data analysis was done by qualitative research method, and validity assured by conformation of the concept and category by 2nursing scientists who had written a Master's thesis on the relaxation technique. The results of the study were summerized as follows; 1. The meaning of the relaxation concept; From 298 statements, 107 concepts were extracted and then 5 categories "Physical domain", "Psychological domain", "Complex domain", "Situation", and "environment" were organized. 'Don't have discomforts, 'don't have muscle tension', 'don't have energy(him in Korean)', 'don't have activities' subcategories were included in "Physical domain". 'Don't have anxiey', 'feel good', 'emotional stability', 'don't have wordly thoughts', 'feel one's brain muddled', 'loss of desire' subcategories were included in "physical domain" 'Comfort body and mind', 'don't have tension of body and mind', 'be sagged' 'liveliness of thoughts' subcategories were included in "Complex domain". 'Rest', 'sleep', 'others' subcategories were included in "Situation domain". And 'quite environment' & 'comfortable environment' subcategories were included in "Environmental domain". 2. The experiences of the relaxation; From 151 statements, 59 experiences were extracted. And then 9 categories-at rest after physical activities, after problem solving, fancy, bathing in the bed, situation, rest, particular time, others-were organized. 3. The musics of the relaxation; From 229 statements, 108 musics were extracted. and the 9 categories- Western classical music, semi classical music, Korean song, Korean popular classical music, song, western popular sonhg, hymn, characteristics of music, others - were organized. In conclusion, There are some differences between Korean concepts, experiences and musics of relasation and western concepts, experiences and musics of relaxation.

• 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.

• The Korean Journal of Community Living Science
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• v.22 no.4
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• pp.637-653
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• 2011

Over the last 20 years, women's development has been ambiguous. According to Freud, the mother-daughter relationship has been considered as an essential component of women's development. This study investigated how the mourning experience from daughters who were separated from their mothers by death offers any meaningful idea to women's life. For Hermeneutic phenomenology, researchers collected data from three women who have lost their mothers through in-depth interviews and drawing pictures with each of them. As a result, this study found that daughters started to fight with their mothers' death from the moment when they were informed. They also experienced a symbolic death until the moment of their mothers' death and even after the confirmation of their mothers' death. Daughters experienced symbolic death, both emotionally and physically as well as familiar experiences with their mothers through the repeated confirmation of death. However, these experiences encouraged daughters to adapt to the reality that was the absence of their mothers through the processes such as "Reflection," "Living in the Center of My life," and "Another Embrace." Through this new perspective, attempts, and relationships, daughters form a new identity and experience 'rebirth'. These daughters' changes were paradoxically strengthened through their resistances towards changes of reformation of themselves.

• Nuclear Engineering and Technology
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• v.52 no.12
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• pp.2812-2820
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• 2020

House load operation (HLO) occurs when the generator supplies power to the house load without triggering reactor trips during grid disturbances. In Korea, the HLO capability of optimized power reactor 1000 (OPR1000) plants has prevented several reactor trips. Operational experiences demonstrate the difference in the reactor trip incidence due to grid disturbances between OPR1000 plants and Westinghouse plants in Korea, attributable to the availability of the HLO capability. However, probabilistic safety assessments (PSAs) for OPR1000 plants have not considered their specific design features in the initiating event analyses. In an at-power PSA, the HLO capability can affect the initiating event frequencies of general transients (GTRN) and loss of offsite power (LOOP), resulting from transients within the grid system. The initiating event frequencies of GTRN and LOOP for an OPR1000 plant are reduced by 17.7% and 78.7%, respectively, compared to the Korean industry-average initiating event frequencies, and its core damage frequency from internal events is reduced by 15.2%. The explicit consideration of the HLO capability in initiating event analyses makes significant changes in the risk contributions of the initiating events. Consequently, for more realistic at-power PSAs in Korea, we recommend incorporating plant-specific HLO-related design features when estimating initiating event frequencies.