• Journal of Powder Materials
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• v.28 no.5
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• pp.417-422
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• 2021

In the present work, Inconel 718 alloy is additively manufactured on the Ti-6Al-4V alloy, and a functionally graded material is built between Inconel 718 and Ti-6Al-4V alloys. The vanadium interlayer is applied to prevent the formation of detrimental intermetallic compounds between Ti-6Al-4V and Inconel 718 by direct joining. The additive manufacturing of Inconel 718 alloy is performed by changing the laser power and scan speed. The microstructures of the joint interface are characterized by scanning electron microscopy, energy-dispersive X-ray spectroscopy, and micro X-ray diffraction. Additive manufacturing is successfully performed by changing the energy input. The micro Vickers hardness of the additive manufactured Inconel 718 dramatically increased owing to the presence of the Cr-oxide phase, which is formed by the difference in energy input.

• Journal of muscle and joint health
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• v.27 no.3
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• pp.229-237
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• 2020

Purpose: This paper aims to clarify the concept of well-dying in the sociocultural context of Korea. Methods: Walker and Avant's method was chosen for the concept analysis. Through a literature review of 36 papers, the attributes and definition of well-dying were derived. Results: The literature revealed that in Korean society, well-dying is defined as the process of actively preparing for death throughout life. The attributes of the concept are a reflection on death, death acceptance, searching for meaning, transcendence, advance decision-making, and sharing values with family. The motivation for thinking about death, the hope of dying with dignity, and the Korean cultural view of death precede the concept, followed by dying with dignity, personal and family happiness, and improved quality of life and death. Conclusion: This study may lead to the unification of concept use based on mutual understanding, thus enabling effective communication in research, education, and clinical settings. This can be the rationale for the development of tools and educational programs as well as establishing policies related to well-dying in Korea.

• Journal of muscle and joint health
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• v.27 no.3
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• pp.268-277
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• 2020

Purpose: This study aimed to examine the effects of hemodialysis patients' uncertainty and resilience and the communication styles of nurses on the self-care of the patients and to improve their quality of life. Methods: The study was conducted from June 13 to July 12, 2019, with patients receiving hemodialysis more than three times a week at five medical institutions located in G metropolitan city. Data were analyzed using descriptive statistics, independent t-test, one-way analysis of variance, Pearson's correlation coefficients, and multiple regression using the SPSS/WIN 25.0 program. Results: The factors influencing self-care were resilience (β=.43, p<.001) and marital status (β=.27, p=.001), which explained 30.8% of the variance. Conclusion: The resilience of hemodialysis patients was confirmed to be the main variable influencing self-care. Therefore, to improve the self-care of hemodialysis patients, it is considered that the development of interventions and programs to improve resilience is necessary.

• Journal of muscle and joint health
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• v.29 no.1
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• pp.28-40
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• 2022

Purpose: The purpose of this study is to reduce loneliness through a systematic review by analyzing the effectiveness, composition and method of non-face-to-face services on the elderly living in the local community. Methods: From June 11 to 15, 2021, related papers were searched using six databases: Ovid-Medline, Ovid-Embase, Cochrane library, KISS, Koreamed, and RISS. Two authors independently assessed the quality of selected studies and data was synthesized. Results: Non-face-to-face services promoted loneliness and social isolation, social support and quality of life, other emotional responses, attitudes and usability, and diet and exercise. As the composition and method of services are being tried in various ways, it is necessary to develop a comprehensive service using ICT to provide systematic intervention to the elderly in the local community. Conclusion: Reflecting the difficulties in implementing face-to-face services due to COVID-19, it is expected to be used as basic data for developing comprehensive non-face-to-face services that meet the major needs of the elderly people and maintain the continuity of care.

• Journal of the Korean Society of Industry Convergence
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• v.25 no.5
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• pp.827-833
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• 2022

In this study, the prediction of the bending angle for the 350 A bellows-type expansion joints and the structural stability according to the load were determined. The stability of the 2km piping system was predicted by applying the allowable bending angle of the expansion pipe joint obtained from the analysis. The maximum bending angle was calculated through bending analysis of the bellows-type expansion joints, and the maximum bending angle by numerical calculation was about 1.8°, and the maximum bending angle of the bellows obtained by comparing the allowable strength of the material was about 0. 22°. This angle was very stable compared to the allowable bending angle (3°) of the expansion pipe joint regulation. By applying the maximum bending angle, the allowable maximum deflection of the 2 km pipe was about 3.8 m. When the seismic load was considered using regression analysis, the maximum deflection of the 2km pipe was about 142.3mm, and it was confirmed that the bellows-type expansion joints and the deflection were stable compared to the allowable maximum deflection of the pipe system. These research results are expected to present design and analysis guidelines for the construction of piping and the development of bellows systems, and to be used as basic data for systematic research.

• Journal of muscle and joint health
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• v.28 no.2
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• pp.111-120
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• 2021

Purpose: This study was a descriptive research to identify the relationships among burden from behavioral psychological symptoms of dementia, dementia attitude, emotional labor and nurse's caring behavior as well as to clarify factors that affect caring behavior of nurses in long-term care hospital. Methods: For the research, this study collected data from July 8 to July 20, in 2019 with 214 nurses who worked at 10 long-term care hospitals in Chungbuk. The data were analyzed using descriptive statistics, t-tests, Mann-Whitney U test, ANOVA, Pearson's correlation coefficient, stepwise multiple regression with the SPSS 23.0 program. Results: Factors influencing caring behavior of nurses in long-term care hospital were dementia attitudes (β=.549, p<.001), burden from behavioral psychological symptoms of dementia (β=.242, p<.001) and marital status (β=.134, p=.017). These factors explained 33.9% of caring behavior (F=37.35, p<.001). Conclusion: Dementia attitudes were confirmed to be the main variable influencing nurse's caring behavior. Therefore, to improve the caring behavior of dementia patient, it is considered that the development of programs to improve dementia attitudes and in-depth understanding regarding the behavioral and psychological symptoms of dementia is necessary.

• Journal of muscle and joint health
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• v.30 no.1
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• pp.48-57
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• 2023

Purpose: The purpose of this study was to examine nurses' critical thinking disposition and knowledge sharing activity and professional work environment on clinical decision-making ability. Methods: The data collection period for this study was from May 24 to May 31, 2021. The data were collected from 167 nurses who consented to participate in this study and have worked for more than one year at general hospital in Seoul. The data were analyzed using the SPSS/WIN 25.0 program. Results: A significant positive correlation was found between clinical decision-making ability and critical thinking disposition, knowledge sharing activity, and a professional work environment. Critical thinking disposition (β=.32, p<.001), knowledge sharing activitiy (β=.24, p=.002) and professional work environment (β=.20, p=.006) had a significant effect on clinical decision-making ability. These factors explained 35.5% of clinical decision-making ability (F=24.22, p<.001). Conclusion: Therefore, in order to develop the critical thinking disposition of nurses, development of systematic educational programs and strategies for practical application are needed. Through this, nurses can improve the professional decision-making ability and clinical performance ability.

• International conference on construction engineering and project management
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• 2005.10a
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• pp.814-819
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• 2005

There is growing consciousness of the environmental performance of buildings in Hong Kong. The Buildings Department, the Lands Department and the Planning Department of the Hong Kong Government issued the first of a series of joint practice notes [1] to promote the construction of green and innovative buildings. Green features are architectural features used to mitigate migration of noise and various air-borne pollutants and to moderate the transport of heat, air and transmission of daylight from outside to indoor environment in an advantageous way. This joint practice note sets out the incentives to encourage the industry in Hong Kong to incorporate the use of green features in building development. The use of green features in building design not only improves the environmental quality, but also reduces the consumption of non-renewable energy used in active control of indoor environment. Larger window openings in the walls of a building may provide better natural ventilation. However, it also increases the penetration of direct solar radiation into indoor environment. The use of wing wall, one of the green features, is an alternative to create effective natural ventilation. This paper therefore presents a preliminary numerical study of its ventilation performance using Computational Fluid Dynamics (CFD). The numerical results will be compared with the results of the wind tunnel experiments of Givoni.

• Journal of muscle and joint health
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• v.16 no.2
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• pp.135-144
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• 2009

Purpose: The purpose of this study was to develop an exercise program to prevent osteoporosis in working women and to examine its effects on bone mineral density (BMD). Method: The subjects of the study were 55 working women. The experimental group participated three times per week for twelve weeks in this exercise program. T-test and ANOVA, Pearson's correlation coefficients were used to analyze the data. Results: The BMD of the experimental group prior to participating in the exercise program was 0.9301 $(\pm08620)g/cm^2$. However, after the exercise program, the BMD increased to 0.9415 $(\pm1117)g/cm^2$ (t=-2.338, p=.026). Moreover, in relations to BMD and physiological variables, there were significant correlations between BMD and physical activity (r=.294, p=.030), as well as between BMI and physical activity (r=.267, p=.049). Conclusion: In this study, BMD in the experimental group had significantly increased after their participation, while the control group had decreased. Thus, this study showed that the exercise program developed for working women is effective in maintaining BMD and consequently preventing osteoporosis.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.17 no.3
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• pp.794-815
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• 2023

The rapid development of mobile communication not only has made the industry gradually diversified, but also has enhanced the service quality requirements of users. In this regard, it is imperative to consider jointly network slicing and mobile edge computing. The former mainly ensures the requirements of varied vertical services preferably, and the latter solves the conflict between the user's own energy and harsh latency. At present, the integration of the two faces many challenges and need to carry out at different levels. The main target of the paper is to minimize the energy consumption of the system, and introduce a multi-slice joint task offloading and resource allocation scheme for massive multiple input multiple output enabled heterogeneous networks. The problem is formulated by collaborative optimizing offloading ratios, user association, transmission power and resource slicing, while being limited by the dissimilar latency and rate of multi-slice. To solve it, assign the optimal problem to two sub-problems of offloading decision and resource allocation, then solve them separately by exploiting the alternative optimization technique and Karush-Kuhn-Tucker conditions. Finally, a novel slices task offloading and resource allocation algorithm is proposed to get the offloading and resource allocation strategies. Numerous simulation results manifest that the proposed scheme has certain feasibility and effectiveness, and its performance is better than the other baseline scheme.