• International Journal of Quality Innovation
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• v.5 no.1
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• pp.1-9
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• 2004

The nonhomogeneous poisson process (NHPP) is often used to model repairable systems that are subject to a minimal repair strategy, with negligible repair times. In this situation, the system can be characterized by its intensity function. There have been many NHPP models according to intensity functions. However, the intensity function of system in use can be changed because of repair or its aging. We consider the single change point model as the modification of the power law process. The shape parameter of its intensity function is changed before and after the change point. We detect the presence of the change point using Bayesian methodology. Some numerical results are also presented.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.7 no.4
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• pp.525-530
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• 2006

Recently companies which do not use the heavy metals such as lead, chrome, mercury to the electronic goods and alternate the materials environment-friendly are increasing. In advanced country, lead-free solder without lead is developed and soldering process almost disappeared. The lead-free solder is environment-friendly but is expensive and lack of tack and durability than lead, the improvement is necessary. To solve this problem, the welding process that uses TIG welding and the welding technology between different kind metals for lead-in wire of room lamp and base department was developed. To do this, previous room lamp manufacturing process was analysed and which process can be alternate was proposed. And the test for selection of optimal value of TIG welding parameter was done. Finally the lamp aging test and earthquake resistant test was done to check the reliability of welded room lamp.

• Journal of Adhesion and Interface
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• v.6 no.3
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• pp.10-18
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• 2005

The hard coatings on the polycarbonate plate were performed with the object of substitution the glass in the car to the polycarbonate plate. In this research, tetraethyl orthosilicate (TEOS), methyltriethoxysilane (MTES) were used to prepare the coatings by sol-gel process. The optimum conditions and formulation to get the excellent physical properties were determined. The pretreatment condition of polycarbonate plate, the mole ratio of TEOS and MTES, selection of the solvent, the aging time, the amount of acid catalyst, and the number of folds of coating were characterized. Pretreatment with poly(methyl methacrylate) was very effective to increase the adhesion strength. The smooth coating which got the 2 H class in pencil hardness was formed in this research by sol-gel process.

• Journal of muscle and joint health
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• v.18 no.2
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• pp.169-181
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• 2011

Purpose: This paper presents the development process and the final contents of the sellf- management education program integrated with exercise training (Healthy Aging Happy Aging, HAHA program) for community residing older adults with chronic diseases. Methods: The program evaluation methodology was applied which is an interactive program development process based on needs assessment, formative evaluation, process evaluation and outcome evaluation. The program was developed and revised while the program was implementing to 22 hypertension (HT) and 32 diabetic (DM) participants. Results: The final program has two sub-programs for HT and DM participants utilizing self-efficacy resources. They share four common components; 1) health screening of exercise risks, 2) weekly 1-hour group self-management education classes, 3) biweekly 1-hour group exercise training and 4) a mid-term individual counseling. Both sub-programs were 12-weeks long but have different education and exercise contents. Participants-rated mean satisfaction scores were 3.47/4 and 3.61/4 for HT and DM program respectively. Attendance rate were 83.1% ~ 92.3% for the classes. Conclusion: The HAHA program developed by multidisciplinary team which reflected participants needs was accepted well by participants evidenced by high attendance rate and perceived satisfaction level.

• Proceeding of Spring/Autumn Annual Conference of KHA
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• 2006.11a
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• pp.149-154
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• 2006

The purpose of this study is to introduce ubiquitous home services for the aged. In comparison with general ubiquitous homes, ubiquitous homes for the aged have two major characteristics. First, the service contents should be expanded and strengthened. Second, the services should be customized to each individuals. The primary objective of a ubiquitous home for the aged is health care. The three affordances for this objective are 1)prevention of sickness and reducing the speed of aging process, 2)technical assistance for disability, 3)recovering and enhancing the physical and cognitive function. For this purpose this paper analyses the characteristics of the aged and current ubiquitous technology and ubiquitous home service, thus providing an outline for ubiquitous services necessary for aged people.

• Journal of Power System Engineering
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• v.7 no.4
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• pp.44-48
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• 2003

Alumium alloys casting are gaining increased acceptance in the automotive and electronic industeries and squeeze casting is the most efficient method of manufacturing such mass produced parts. This study has been investigated the microstructures and mechanical properties of Al-7.0Si-0.4Mg(AC4C)alloy fabricated by squeeze casting process for development of Engine Mountain Bracket. The microstructure of squeeze casted specimen were composed of eutectic structure Alumimim solid solution and $Mg_2Si$ precipitates. The tensile strength of as-solid solution treatment Al-7.0Si-0.4Mg alloy revealed 2985MPa. It was found that Al-7.0Si-0.4Mg alloy have good aging hardening effect results are presented to show the validity of the control method.

• The Journal of Korean Obstetrics and Gynecology
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• v.20 no.4
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• pp.217-224
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• 2007

Purpose: The purpose of this study is to report the effect of oriental treatments for the postpartum disease caused by abortion in an elderly gravida. Methods: The patient in this case, 40 years-old female was admitted at You-Min oriental medicine hospital for 26days($3rd/Jan/2007{\sim}29th/Jan/2007$) due to postpartum disease caused by abortion. Her chief complains were chilling, vertigo, nausea, whole body pain, and sweating. This patient was treated with oriental treatment such as herb medication, acupuncture and moxibustion therapy. Results: After the oriental medical treatment, the patient was improved in the clinical symptom of postpartum disease caused by abortion and the aging process. Conclusion: This case study shows that the postpartum disease caused by abortion in an elderly gravida would be treated more carefully in oriental medicine considering women#s aging.

• Proceedings of the Korea Concrete Institute Conference
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• 2001.11a
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• pp.105-108
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• 2001

In this paper, we evaluated the suitability of steel slag(is divided with electric arc furnace slag and converter slag) as concrete aggregate by measuring physical and chemical characteristics of it. The steel slag mainly contains SiO$_2$ and CaO as the chemical composition. The reaction with water and a little of free CaO in the slag causes slag's volume to expand. Therefore, we used several aging methods in order to decrease the characteristics of slag volume expansion. The physical properties of steel slag aggregate are researched and then the strength of concrete with the steel slag aggregate is measured.

• BMB Reports
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• v.53 no.9
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• pp.458-465
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• 2020

Metastasis is the main culprit of the great majority of cancerrelated deaths. However, the complicated process of the invasion-metastasis cascade remains the least understood aspect of cancer biology. Telomerase plays a pivotal role in bypassing cellular senescence and sustaining the cancer progression by maintaining telomere homeostasis and genomic integrity. Telomerase reverse transcriptase (TERT) exerts a series of fundamental functions that are independent of its enzymatic cellular activity, including proliferation, inflammation, epithelia-mesenchymal transition (EMT), angiogenesis, DNA repair, and gene expression. Accumulating evidence indicates that TERT may facilitate most steps of the invasion-metastasis cascade. In this review, we summarize important advances that have revealed some of the mechanisms by which TERT facilitates tumor metastasis, providing an update on the non-canonical functions of telomerase beyond telomere maintaining.

• Journal of Korea Technical Association of The Pulp and Paper Industry
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• v.32 no.2
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• pp.45-50
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• 2000

This study was to get the optimum conditions on bleaching by mixing of various colored ledgers with white ledger by 50：50 ratio. This bleaching was carried out by two steps, reductive-oxidative process was shown a better brightness compared to oxidative-reductive one. Especially, in reductive bleaching using sodium hydrosulfite, the aging temperature should keep above 6$0^{\circ}C$ irrespective of aging time, alkaline condition was more effective than acid one. Final brightness after bleaching and feinting was obtained over 78% to be used by the raw pulp of tissue.