• 한국압력기기공학회 논문집
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• 제5권2호
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• pp.27-34
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• 2009

This paper proposes a simple numerical method to simulate ductile failure behaviors. The method is based on finite element analysis with a simple damage theory. To validate the proposed method, simulated results are compared with experimental data. Despite its simplicity, the proposed method well predicts experimental results systematic analyses are also performed to investigate the effect of the element size.

• 소성∙가공
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• 제13권7호
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• pp.600-607
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• 2004

This paper addresses a viscoplastic constitutive model that allows a consistent way of modeling positive and negative rate sensitivities of flow stress concerned with dynamic strain aging. Based on the concept of continuum mechanics, a phenomenological constitutive model includes the use of a yield surface within the framework of unified viscoplasticity theory. To model negative rate sensitivity, rate-dependent back stress is introduced and flow stress in fully developed inelastic deformation regime is thus decomposed into the plastic contribution of rate independency and the viscous one of rate dependency.

• Bulletin of the Korean Chemical Society
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• 제1권1호
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• pp.39-44
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• 1980

Activation energies for plastic deformation calculated from traditional phenomenological equations have been criticized frequently since the values are different by authors, and also by experimental conditions. The reasons of different activation enthalpies are clarified in this study. Our method for calculating activation enthalpies based on the authors' theory of plastic deformation was presented and discussed. The method was applied to various cases of alloys, the calculated activation enthalpies are listed and compared with the activation energies obtained by the traditional methods in order to show the reasonableness of our method. The physical meaning of the activation enthalpies which we found was clarified.

• 재활간호학회지
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• 제4권1호
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• pp.20-30
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• 2001

Stroke is known as a detrimental disease that leaves serious sequelae. The stroke patients suffer from limitations of physical and social activities. The patients try to adapt themselves to the limitations in order to achieve rehabilitation. This study was performed to clarify the lived experience of rehabilitation from the stroke patients. In collecting data for this study, in-depth personal interviews were made by a researcher from February to April in 2001 at rehabilitation clinics and physical therapy centers locate in Iksan city. The methodological approach was van Manen's hermeneutic phenomenological methodology in order to understand the meaning and nature of stroke patients' experiences in rehabilitating their physical limitations. Collected data were analyzed with phenomenological way of study that was develope by van Manen. The 8 patients who agreed to participate in this research were inter viewed by researcher under the private and comfortable environment. Personal interviews were done three or five times per each patients and each interview took 70 to 90 minutes. The statements were analyzed and finally revealed three essential themes : Theme 1 - Desperateness to achieve freedom again Theme 2 - Seizing hope of recovering Theme 3 - Seeking support from family members, relatives and friends Based on these themes, stroke patients' rehabilitation experience are described as following. The stroke patients have strong desire to achieve freedom again in order to escape from social isolation. The stroke patients want to go back to the state of their previous health state. The stroke patients strongly try to do anything for their recovering and also to have positive thinking. In the other hand, they feel pity for themselves through desperation, fear, sorrow, and self-pity. The stroke patients have dissatisfaction about neighbors' rumor and attitude toward themselves. The stroke patients have experiences to rely on neighbors' support seeking a warm word of consolation. This research showed us that van Manen's hermeneutic phenomenological methodology leads us to understand stroke patients' rehabilitation process more comprehensibly. Based on this research, it is suggested that further studies provide a foundation for the development of a rehabilitation theory for Korean stroke patients.

• 한국도서관정보학회지
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• 제44권1호
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• pp.177-199
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• 2013

본 연구는 질적 다방법을 적용하여 복합 현상인 사서의 직업 사회화 경험의 실체이론을 구성하였다. 일련의 3개 질적 선행연구의 총참여자는 이론적 표집에 의한 42명의 현직 사서(사서교사)들이다. 질적 다방법 접근의 최종 통합방법으로서 근거이론 방법을 적용하여 3개의 선행연구 결과 및 심층면담자료의 최종분석과 비교, 재검토, 통합을 하였다. 사서의 직업사회화 경험의 전체과정을 이끌고 통합하는 핵심범주는 사서가 대중들로 부터 신뢰와 존중, 사회적 영향력을 추구하는 과정인 '사회적 인정 추구하기'로 도출하였다. 사서의 직업사회화의 '사회적 인정추구하기'의 경험 유형은 '사서직과 자아 일치형'과 '자아 불일치형'으로 구분되며, 여기에는 '신념형', '성공지향형', '업무 책임감형', '열악함 매몰형', '개인자존감형', '회의형'으로 도출되었다. 각 유형별 직업사회화 특성과 지원방안을 제시하였다.

• 한국세라믹학회지
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• 제45권3호
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• pp.139-141
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• 2008

The piezoelectric properties of tetragonal 0.88Pb$(Zn_{1/3}Nb_{2/3)O_3-0.12PbTiO_3$ single crystals are characterized along the <111> direction, which composed the engineering domain configuration in the tetragonal phase. The <111>-oriented crystal possessed smaller $d_{33}$ values compared to the crystal along the <001> spontaneous polarization direction. Based on phenomenological theory, it is shown that the engineering domain configuration does not enhance the piezoelectric constant in tetragonal 0.88Pb$(Zn_{1/3}Nb_{2/3)O_3-0.12PbTiO_3$ single crystals. In addition, the electrostrictive coefficients of $Q_{12}=-0.03706m^4/C^2,\;Q_{11}=0.10765m^4/C^2,\;and\;Q_{44}=0.02020m^4/C^2$ of tetragonal 0.88PZN-0.12PT single crystals were calculated.

• International Journal of Advanced Culture Technology
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• 제9권3호
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• pp.16-22
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• 2021

This study was phenomenological analysis of maternal nursing of online practice experience. The study participants were students in between the ages of 20 to 25 who participated in the online practice of maternal nursing and conducted to a total of three interviews until the meaning were no longer derived. The data collection period was from May 26 to June 5, 2021, and analysis was conducted simultaneously with the datas have collected. The collected data were analyzed using the Giorgi's Phenomenological Analysis Method, and the study resulted in five categories (Opportunity to repeat, Systematic Scenarios, Immediate nursing intervention feedback, Beneficial hands-on experience, Different case experiences), 11 subcomponents, and 21 Semantic units. Based on the results of this study, the following conclusions were obtained. In maternal nursing, nursing students could experience more systematic and diverse case online than experiences throughout clinical practice, and achievement was also increased in theory learning for online practice. In other words, the online practice of maternal nursing was suitable for various content compositions that could not be experienced in clinical practice, but it is deemed urgent to have a program in Korean suitable for Korean culture. In future studies, this researcher hope to produce a maternal nursing practice program in Korean.

• Child Health Nursing Research
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• 제27권1호
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• pp.3-12
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• 2021

Purpose: While clinical practice is crucial for nursing students to acquire the skills needed to provide professional, high-quality nursing care, further studies on improving undergraduate nursing programs are needed to provide a supportive clinical learning environment for student nurses. This study aimed to understand nursing students' clinical experiences in newborn nurseries and neonatal intensive care units and to provide basic data for the establishment of strategies to promote effective clinical education. Methods: Interviews were held with 15 nursing students at J University who had clinical practice experience in the newborn nursery and neonatal intensive care unit. The collected data were analyzed using the phenomenological analysis method developed by Colaizzi (1978). Results: The nursing students' experiences were grouped into four categories: "expectations for and anxiety about clinical practice", "acquisition of a wide range of knowledge regarding neonatal nursing", "challenges faced in clinical practice", and "experiencing interpersonal changes". Conclusion: The current neonatal practice nursing education system provides students with positive learning experiences. However, the lack of practice opportunities, insufficient instruction, and the theory-practice gap were identified as major issues hindering students' learning needs. These study results are expected to provide basic data for curriculum development to improve undergraduate nursing education.

• 철학연구
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• 제146권
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• pp.49-77
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• 2018

본 소론이 논의한 것은, 후설 현상학에서의 자아 문제가 어떻게 제기되고 또 그 자아는 어떤 과정을 겪으면서 변화해 가는지, 그 추이를 추적하는 것이다. 이 소론에서 논의된 내용들은 다음과 같이 4부분으로 나누어진다. 첫째 부분은 후설 현상학에서 자아 문제로서 최초로 제기된 순수자아에 대해서이다. 이 순수자아는 2개의 소주제를 통해서 논의되었다. 그 첫 번째 소주제는, 이 순수자아에 대해서 후설 스스로가 취했던 상반된 2개의 입장에 대해서이다. 그 두 번째 소주제는, 후설이 순수자아를 '현상학적 주제'로서 수용한 이후 "이념들 I"을 중심으로 탐구했던 순수자아의 내용에 대해서이다. 둘째 부분은 "이념들 II"에서 등장하는 "3개의 자아(론)"에 대해서인데, 이 자아론은 구체적인 인간에게서 성립되는 자아(들)로서 다음과 같은 두 가지 소주제를 통해서 논의되었다. 그 하나는 "3개의 자아론"을 가능케 하는 방법론에 대한 논증이고 다른 하나는 그 3개의 자아들 - 신체적 자아, 인격적 자아 그리고 모나드적 자아 - 의 내용에 대해서이다. 세 번째 부분은 '모나드적 자아'에 대해서인데, 그 내용에 있어서 가장 원숙한 자아이론으로서 두 가지 소주제를 통해서 논의되었다. 그 첫 소주제는 모나드적 자아'가 성립되기 위한 이론적 근거에 대해서이다. 둘째 소주제는 이 모나드적 자아의 내용에 관해서 인데, 이 자아는 한마디로 말해서 현실적 자아와 초월론적 자아가 종합된 형태라고 할 수 있다. 이 자아의 특징은 다원론적인 모나드적 자아라고 규정할 수 있는데, 그 장점은 데카르트적 유아론적인 타자관의 극복이라고 하겠다. 넷째 부분에서는 앞에서 논의된 3개의 자아론이 총괄적으로 정리되었다.

• 한국간호교육학회지
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• 제6권1호
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• pp.23-35
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• 2000

This qualitative nursing research used a hermeneutic phenomenological approach to discovery of meaning of the nursing students' clinical experience in junior colleges. Data collecting was utilized by in- depth face-to-face interviews of 10 sophomores who were participating in their first clinical experience. The following themes of the experience emerged. 1) The first step of fear (fear, being embarrassed) 2) Rhythmical patterning of theory and practice(disappointment of nurses, recognition of the gap between the theory and practice, the conflict between medical doctors and nurses, trouble with the students from other colleges, confusion from nurses' educational and noneducational attitudes, burden of responsibility for nurses' jobs, and the tiresome nature of repeated practice) 3) Discovery of changing self, awareness of self-expansion (awareness of professional nurses' roles, formation of self-confidence, changing of one's state of mind) From this study essential theme of clinical experience of nursing student's was identified, and continuous efforts to establish better adaptation of nursing students to clinical practice are required.