• Journal of the Korean Institute of Telematics and Electronics B
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• v.32B no.11
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• pp.1417-1423
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• 1995

In this paper, we propose a full-search block-matching algorithm with early retirement, which can be applied to a 1-D systolic array of processing elements (PE's) for fast motion estimation. In the proposed algorithm, a PE is retired when its current accumulated sum is equal to or larger than the current minimum MAD. If all PE's are retired, the MAD calculation is stopped for the current array position and is started for the next one in the search window. Simulation results show that the optimum motion vector is always found with less computation, the total computation cycles for motion estimation are decreased to about 60%, and the power dissipation in the PE's is reduced to about 40-60%.

• Proceeding of Spring/Autumn Annual Conference of KHA
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• 2005.11a
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• pp.375-378
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• 2005

The purpose of this study is to analyze the research trends and characteristics in the research subjects related to the housing for the elderly in Korea. The number of 199 studies was selected from the paper of Architectural Institute of Korea. The data of the present condition for welfare facilities are exploited from Korea National Statistical Office. The elderly welfare facilities are divided as 5 kinds of things ; housing facilities, medical facilities, leisure facilities, retired facilities and mixed facilities. And policy and statutes of welfare facilities are included in this study. The data were analysed with contents and chronological order and then the trends of research were studied by facilities. As the results of study, studying about housing facilities is well progressed but, the other parts of studying are little short. Especially, studying for retired facilities is seldom done so we need systematic survey and study.

• Archives of Plastic Surgery
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• v.42 no.5
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• pp.635.1-635.1
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• 2015

• Proceedings of the Korean Nuclear Society Conference
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• 2002.10a
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• pp.232.2-232
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• 2002

• Korean Security Journal
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• no.33
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• pp.137-161
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• 2012

There are some common and broad trends in National crisis management system around the world. This article considers that paradigm theoretically. 1) a shift from civil defense to civil protection, 2) 10 principles in sustainable National crisis management system, 3) the collaborative governance of crisis management. Some civil defense problems in National crisis management system are as follows; 1) obscurity of organizational identity through twofold function in civil defense, 2) ineffective organization in civil defense and disaster management system, 3) weakness of competencies in local government, 4) overlook of actual condition in communities and civil defense resources. This article suggests that to provide retired and active private security practitioners, retired law enforcement personnel, and retired military personnel to form a elite civil defense force and to find creative ways to address this pervasive threat which one reasonable and affordable solution would be for the government to take advantage of an existing resource.

• Korean Journal of Social Welfare
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• v.67 no.3
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• pp.281-303
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• 2015

This study examined the interdependent retirement decision between husbands and wives. Since most of retirees in Korea retired by involuntary reasons such as health problems, it purposes to test whether the involuntary retirement of husbands(wives) influences the retirement decision of wives(husbands). Using data from 4th Korean Longitudinal Study of Ageing Panel, it conducted probit and multivariate probit analysis on 1,038 dual-earner couples aged 51~76 to test interdependence of couples' retirement. The results showed that husbands who have retired wife were more likely to retire. It also proved that involuntary retirement of spouse is a significant predictor of early retirement decision, though the direction of the effect is reversed by gender. Wives were more likely to retire when husband were retired involuntarily, while husbands were more likely to stay in labor market. These findings helped to understand the retirement decision of aged couples in Korea and brought suggestion on labor market and care policies for aged couples.

• Safety and Health at Work
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• v.5 no.2
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• pp.91-96
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• 2014

Background: Chronic obstructive pulmonary disease (COPD) is an important cause of occupational mortality in miners exposed to coal mine dust. Although the inflammatory mediators involved in COPD have not been defined, many studies have shown that inflammatory mediators such as reactive oxygen and nitrogen species are involved in orchestrating the complex inflammatory process in COPD. Methods: To investigate the relevance of exhaled biomarkers of oxidative and nitrosative stress in participants with COPD, we determined the levels of hydrogen peroxide, malondialdehyde (MDA), and 3-nitrotyrosine (3-NT) in exhaled breath condensate (EBC) in 90 retired elderly coal miners (53 non-COPD and 37 COPD participants). Results: Mean levels of MDA (4.64 nMvs. 6.46 nM, p = 0.005) and 3-NT (3.51 nMvs. 5.50 nM, p = 0.039) in EBC were significantly higher in participants with COPD. The median level of MDA did show statistical difference among the COPD severities (p = 0.017), and the area under the receiver operating characteristic curve forMDA (0.67) for the diagnostic discrimination of COPD indicated the biomarker. The optimal cutoff values were 5.34 nM (64.9% sensitivity and 64.2% specificity) and 5.58 nM (62.2% sensitivity and 62.3% specificity) forMDA and 3-NT, respectively. The results suggest that high levels ofMDA and 3-NT in EBC are associated with COPD in retired elderly miners. Conclusion: These results showed that the elevated levels of EBC MDA and EBC 3-NT in individuals with COPD are biomarkers of oxidative or nitrosative stress.

• Journal of Korean Society of Occupational and Environmental Hygiene
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• v.29 no.3
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• pp.404-413
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• 2019

Objectives: Chronic obstructive pulmonary disease(COPD) is an important cause of mortality in workers exposed to hazardous dust, such as crystalline silica or coal, and COPD is related to inflammation and oxidative stress in the lung. The aim of this study was to evaluate the association of oxidative stress and inflammation to COPD in retired workers exposed to mineral dust. Methods: The levels of malondialdehyde(MDA) in EBC as biomarkers for oxidative stress and C-reactive protein(CRP) and lactate dehydrogenase(LD) as biomarkers for inflammation were measured in 107 male subjects(63 pneumoconiosis and 42 COPD subjects). Results: Mean levels of EBC MDA(2.03 nmol/L vs. 4.65 nmol/L, p=0.010) and serum LD(170.3 U/L vs. 185.9 U/L, p=0.022) were significantly higher in subjects with COPD, but mean levels of serum CRP(p=0.469) did not show a statistical difference between the study groups. Level of EBC MDA was negatively correlated with ${%}FEV_1$ predicted(r=-0.279, p=0.004) and ${%}FEV_1/FVC$ ratio(r=-0.397, p<0.001). Conclusions: These results suggest that EBC is a useful biological matrix for investigation of respiratory oxidative stress. High levels of EBC MDA and serum LD are related to COPD in retired workers exposed to mineral dust.

• Journal of the Korean Society for information Management
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• v.36 no.1
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• pp.215-246
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• 2019

The purpose of this study is to comprehend the retired elderly person's experience of library using the narrative inquiry method proposed by Clandinin and Cornelly. I intended to grasp the details of the several changes that library use brings to the lives. It was also to examine the meanings of the experiences for their lives. For this purpose, three elderly retirees using public libraries in Seoul were selected as research participants. I interviewed their experiences and constructed field text from interview. Based on the field text, the story of the participants was reconstructed into research text which is form of novels, essays, and letters. Their experience in using libraries was interpreted as a source of regular life, fun and vitality, a treasure house for dreaming new life, a source of consolation to endure old age. And I found some common points within their narrative that they seek for a healthy life through reading books. The results of this study are expected to be useful for expanding the understanding of the public library's elderly users and to be used as basic data for service improvement.

• 한국노년학
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• v.36 no.4
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• pp.959-979
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• 2016

This study was performed to explore the life experience as a teacher was dissolved in life aimed at elementary school female teachers. The selection of the four-year teaching career more than 35 years, from January to November 2015 and retired teacher retirement not more than three years to 2015, five people in the study participants were conducting research. Research method was approached narrative interview method of qualitative research, Sch?tze of biographical research methods utilized in exploring how narratives. Results from this study showed the biographical curve through the 'biographical statement', 'experience the life of a female teacher','difficulties experienced in the reality of female teachers', 'reward as a teacher', divided into the categories' 'post-retirement life adaptation types'. These findings are in accordance with the retirement teacher pointed out the lack of social adaptation programs, such as training or preparation for life after retirement, With the increasing need for pre-retirement training is to prepare for life after retirement were suggestions that the government offers programs and information about the life after retirement is necessary.