• 가정과삶의질연구
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• 제23권3호
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• pp.103-114
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• 2005

The number of grandparents who have responsibility for raising their grandchildren is growing. The present study examines the extent of this phenomenon and some of the issues these grandparents face in surrogate parenting. The sample consists of 69 grandparents(63 grandmothers and 6 grandfathers) of grandchildren who have lived with them at least 6 months without their parents. The grandparents raising grandchildren reported that caregiving bought negative changes in relations with their own children, economic situation and health condition. They concerned most about the issue of good mannered behavior of grandchildren and making good friends and needed social supports in terms of house cleaning and cooking and transportation for after school activities. Caregiver burden was related to the number of family members, the degrees of life changes, economic hardship due to caregiving, grandchildren's school performance and the relations with granparents' own children.

• 국제학술발표논문집
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• The 1th International Conference on Construction Engineering and Project Management
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• pp.748-753
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• 2005

In a super-highrise residence project, a project manager needs to form the long-term risk management plan which covers the problems from the beginning of project to the time of demolition. The cause and responsibility for a risk are clarified and quantitatively evaluated through the life cycle of a project. Development of the system which supports a risk strategy effectively is needed as a project becomes complex. In this paper, through the life cycle of a specific super-highrise residence project, a risk phenomenon is specified from a viewpoint of each participant, and the mathematical model is formulated choosing the combination of the optimal strategy against a risk quantitatively within a fixed risk strategy budget.

• 한국인구학
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• 제23권2호
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• pp.167-187
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• 2000

우리사회에서 노인 자살자의 수와 자살율이 지난 십 년간 지속적으로 증가하고 있다. 이는 한국 노인들이 당면하고 있는 문제들(경제적 불안정, 조기퇴직, 건강악화, 가족부양체계의 약화, 정서적 고립 등)의 심각성을 시사하고 있다. 하지만 노인자살에 관한 국내 연구는 거의 없는 실정이다. 노인자살현상에 대한 체계적인 연구를 통하여 자살의 배후에 있는 노인문제 혹은 생활조건을 확인하여 노인복지 차원에서 일차적 예방 대책을 강구하여야 할 것이다. 특히, 자살위험이 높은 특정 노인인구집단을 중심으로 자살예방 대책이 조속히 마련되어야 할 것이다. 따라서 이 연구는 우리 나라 노인문제의 구조적 상황과 노인자살과의 관련성을 사회학적 시각(교환이론과 사회통합이론)으로 조망해 본 후 이를 기초로 노인자살을 유도하는 노인생활의 조건을 개선할 수 있는 노인복지과제를 제시하여 한국노인의 자살율 증가를 예방하고자 하는데 그 주된 목적이 있다.

• Journal of Ginseng Research
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• 제26권2호
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• pp.89-95
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• 2002

인삼의 적변현상을 방제하기 위한 효율적인 방안을 마련하기 위한 본 연구의 결과를 요약하면 다음과 같다. 1. 천연자원으로부터 적변억제 효과가 우수한 방제물질 (Biotic preventers) ICPE-C$_{105}$과 ICPE-P$_{107}$을 선발하였다. 2 .적변방제 효과를 증진시키기 위해 선발한 보조제(AI) 중 "R"과 "W"가 우수하였다. 3. 방제물질과 보조제를 조합한 방제물질을 처리한 모든 처리구에서 인삼의 생장이 우수하였으며, 특히 ICPE-C$_{105}$R과 ICPE-P$_{107}$R의 처리구는 각각 67.3%, 52.7%의 생장 증가를 나타냈다. 4. 묘삼의 출아율은 ICPE-C$_{105}$P와 ICPE-P$_{107}$P 처리구에서 대조구보다 우수하였다. 5. 또한 방제물질 처리에 따른 적변발생율에서 대조구는 35%의 적변이 발생한 반면, ICPE-C$_{105}$R과 ICPE-P$_{107}$R이 5.3%의 적변발생율을 나타내어 적변에 효과가 있음을 확인하였다. 6. 인삼뿌리의 ginsenoside함량에 미치는 방제물질의 효과에서는 ICPE-C$_{105}$P와 ICPE-P$_{107}$R의 처리구가 각각 5.0%, 14.2%의 ginsenoside의 함량증가 효과가 있음을 확인하였다.

• Structural Engineering and Mechanics
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• 제38권4호
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• pp.443-457
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• 2011

The loss of strength in a structure as a result of cyclic loads over a period of life time is an important phenomenon for the life-cycle analysis. Service loads are accentuated at the areas of stress concentration, mainly at the connection of components. Structural components unavoidably are affected by defects such as surface scratches, surface roughness and weld defects of random sizes, which usually occur during the manufacturing and handling process. These defects are shown to have an important effect on the fatigue life of the structural components by promoting crack initiation sites. The value of equivalent initial flaw size (EIFS) is calculated by using the back extrapolation technique and the Paris law of fatigue crack growth from results of fatigue tests. We try to analyze the effect of EIFS distribution in a multiple site damage (MSD) specimen by using the extended finite element method (XFEM). For the analysis, fatigue tests were conducted on the centrally-cracked specimens and MSD specimens.

• 기본간호학회지
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• 제23권1호
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• pp.21-31
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• 2016

Purpose: This study is a qualitative research to identify new nurses' adaptation experience to sleep changes. Method: Grounded theory methodology was utilized. Participants were 10 new nurses from one university hospital. The information was collected and analyzed using the grounded theory of Corbin and Strauss'(2008). Results: Through constant comparative analysis, central phenomenon was identified as 'Shaky daily life due to the sleep change'. A core category emerged as 'In the shaky daily life, go grab my position', Causal conditions were 'Heaviness in shift work', 'Not released after getting off work', and 'Body and mind are exhausted'. Context were 'An environment that does not tolerate mistakes' and 'Clogged breathing due to worries'. Intervening factors were 'Support of colleagues', 'Recovery volition in restoration of altered relationships due to sleep'. Action/Interaction Strategies were 'To strive for a good sleep', 'Require a reasonable duty schedule' and 'Find a breakthrough'. Consequences were 'Become the master of shaky daily life' and 'Accepting the life of a nurse'. Conclusion: New nurses experience sleep patterns changes from the hospital shift system. but throughout the process of adaptation, came to accept sleep disorder as part of the life of a nurse.

• The Journal of Asian Finance, Economics and Business
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• 제7권5호
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• pp.145-154
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• 2020

The purpose of this study is to analyze how the problems caused by overtourism affect the quality of life of Jeju residents and their perceptions of the overtourism phenomenon by exploring related factors for future policy implications. In the research model, each independent factor related to tourists affects the quality of life of residents, and the mediation variable (QoL) ultimately agrees with overtourism. This study uses Partial Least Squares-Structural Equation Modeling (PLS-SEM), which is less influenced by the sample size. The research is based on 360 questionnaires. The test results showed that cultural factors affected the QoL statistically at 1% significance level, and economic factors were significant at 5%. The quality of life variable affects the agreement of overtourism (p-value 1% significance level). An indirect effect analysis on whether each independent factor affects the overtourism factor through the parameter of the QoL of the residents showed that the cultural factor at 5% level statistically affected it, and economic factors were significant at 10%. In conclusion, we recommend implementing both economic and cultural factors to reduce the negative perception of overtourism for the policy planning. Further research in multiple aspects should be continued to overcome the vulnerability of the Island destination tourism.

• 한국식물학회:학술대회논문집
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• 한국식물학회 1996년도 제10회 식물생명공학심포지움 고등식물 발생생물학의 최근 진보
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• pp.19-25
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• 1996

Three key genetic loci required for proper progression of leaf senescence were identified in Arabidopsis thaliana. Mutations in these loci cause delay in all senescence symptoms examined, including both anabolic and catabolic activities, during natural senescence and upon artificial senescence induced by various senescence-inducing treatments. The result provides a decisive evidence that leaf senescence is a genetically programmed phenomenon controlled by several monogenic loci in Arabidopsis thaliana. The result further indicates that leaf senescence caused by various senescence signals occurs, at least in part, through common pathways in Arabidopsis and that the threed genetic loci function at the common steps.

• 기본간호학회지
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• 제9권2호
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• pp.268-278
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• 2002

Purpose: This study provides useful basic information about caring for elderly women. It also promotes understanding by confirming what can vitalize the women and improve quality of life in elderly women as they continue to become important in the society which is moving towards being an 'aged society'. Method: Grounded theory a qualitative research method, was use to develop new thesis regarding life's vitality in elderly women. Thirteen women participated in the research. They were women without any problems in perception or communication and who agreed to participate in the research. Result: The results, using analysis process of Strauss and Corbin (1990). showed that life's vitality in elderly women is to bring well-being through vitalization against weakness. Conclusion: Based on such these results, this study will be helpful to nursing mediation and policy development which will improve the quality of life of elderly women through better understanding and promotion of life's vitality.

• Steel and Composite Structures
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• 제18권3호
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• pp.673-691
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• 2015

In this paper we are particularly focusing on the dynamic crack fatigue life of a 25 m length wind turbine blade. The blade consists of composite materiel (glass/epoxy). This work consisted initially to make a theoretical study, the turbine blade is modeled as a Timoshenko rotating beam and the analytical formulation is obtained. After applying boundary condition and loads, we have studied the stress, strain and displacement in order to determine the critical zone, also show the six first modes shapes to the wind turbine blade. Secondly was addressed to study the crack initiation in critical zone which based to finite element to give the results, then follow the evolution of the displacement, strain, stress and first six naturals frequencies a function as crack growth. In the experimental part the laminate plate specimen with two layers is tested under cyclic load in fully reversible tensile at ratio test (R = 0), the fast fracture occur phenomenon and the fatigue life are presented, the fatigue testing exerted in INSTRON 8801 machine. Finally which allows the knowledge their effect on the fatigue life, this residual change of dynamic behavior parameters can be used to predicted a crack size and diagnostic of blade.