• Proceedings of the Korean Institute of Building Construction Conference
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• 2018.05a
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• pp.300-301
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• 2018

Construction industry is the biggest employer as a single sector, however, that needs better job quality and working conditions due to problems such as lack of job stability, aging worker, late disbursement of wages, and so on. In order to deal with fundamental issues of construction skilled worker's wages, this paper performs comparing the wage system of the construction industry in South Korea and the United States, and analyzes the characteristics about wage structure and determination. As a result of this study about U.S. case, it requires all stakeholder's exertions through technical competitiveness and management ability, not price war by reducing laborer's wages.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 1996.11a
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• pp.306-310
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• 1996

In this paper a series of developing process for an insulator which can be employed in overhead distribution lines, using polymeric composite materials, is introduced. In order to design an insulator for heavily polluted area, weathershed of alternating type was adopted, which could have longer leakage distance. Modified EVA was used as surface material which has good electrical and mechanical characteristics as well as superior chemical stability. FRP core was covered with above surface material through heat shrinking process. By standardization of each process, higher productivity and lower production cost could be ensured. The developed insulator has been put under various tests including long-term field test and artificial aging test and satisfactory results were obtained.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2008.06a
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• pp.41-42
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• 2008

p-type(100) Si 위에 BTMSM과 산소를 혼합한 전구체를 가지고 PECVD 방법을 사용 하여 저유전상수를 갖는 SiOCH막을 형성하였다. 알루미늄 전극을 구현한 MIS (Al/SiOCH/p-si(100)) 구조의 커패시터를 가지고 C-V 특성을 측정하여 유전상수를 계산하였다. 상온에서 증착된 SiOCH 박막의 유전상수는 $450^{\circ}C$에서 30분 동안 열처리 후 뚜렷하게 감소하는 경향을 나타냈으며, 상온 및 대기압에서 공기 중에 노출시켜 자연 산화과정을 겪은 후에 각각의 유전상수는 전체적으로 증가하였지만, 열처리한 박막이 상대적으로 경시효과(aging effects)에 대하여 안정화된 것을 확인하였다.

• Proceedings of the KSR Conference
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• 2006.11b
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• pp.98-103
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• 2006

The hunting is the natural characteristics of the railway wheelset which is originated from the contact between the conical type wheel profile and rail. The critical speed of rolling-stock is called when the hunting is occurred, and it is closely connected with vehicle stability. The parameters which influence the hunting motion are like wheel profile, primary spring property and wheelset dimension, etc. The studies for these parameters are reported diversely. In this study, we aim to analyze the influence of parameters on hunting with the change of wheel profile produced by wheel wear and material property produce by aging of primary spring. For this, we made a dynamic model for wheelset and vehicle. Using these models, we analyzed the critical speed with the variations of the parameters like as wheel profile and primary spring property and we show the results.

• Journal of Korea Foundry Society
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• v.19 no.5
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• pp.433-439
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• 1999

Rapidly solidified Mg-Al-Si base alloys containing Ca were obtained by melt spinning. The melt-spun ribbons were aged isochronally or isothermally to investigate age hardening phenomena and microstructural change according to the alloy composition. Age hardening occurred after aging at $200^{\circ}C$ for 1h mainly due to the precipitation of $Al_2Ca$ and $Mg_2Ca$, which have coherent interfaces with the matrix. With the increase of Ca content, the hardness values of the alloy ribbons were increased. Among the alloys, Mg-10Al-2 Si-3Ca alloy showed a good thermal stability at elevated temperature.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2009.05a
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• pp.623-626
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• 2009

New ship technology and trapping equipment must be implemented into ship sailing which is currently used nowadays. The day/night camera stability, user interface, track, and remote control system of Jim structure for all over the world should be competitive in the global market. The development equipment sales are losing its competitiveness edge of the existing sailing ship communications equipment due to supply to the aging of the entire system and integration of the development especially for foreign equipment competitor.

• Child Health Nursing Research
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• v.5 no.3
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• pp.292-304
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• 1999

The lengthened average span of human life by virtue of recent developments in medicine has caused the Population of elders to increase. The development of modern industrial society has transformed family structure from the large family system to that of a nuclear family. Due to the shift in family structure, the problem of support for the aged has surfaced as a nursing problem as well as a social problem. With regard to this problem, this study aims to investigate the adolescent's understanding of elders and aging. By identifying their understanding and classifying their attitude patterns, this study will help the nursing assessment of the support of elders in the family. This study employed Q-methodology and the research was conducted from December 1998 to May 1999. One method of the research included deep interviews with elders, those who are in their 50's. 40's or 30's. and the adolescent. 183 Q-Populations taken from literary works such as poems or novels were also formed as another method. Finally. 36 Q-cards were made after consultation with Professors of the nursing department. The subjects of the P- sample were 30 high sohoolboys/girls - who were in first, second, and third years. The result showed that 3 factors provided an explanation for 59.14% of the whole variables: the first factor, 41.37%; the second factor. 11.49%, and the third factor. 6.28%. These three factors were analyzed and categorized as three types. Twenty subjects out of the 30 were included in Type 1: Respecting Elders. The statements which showed the most positive consent were as follows: 'The declining age is a perfect time to prosper completing a worthy life' ; 'Getting old. one needs financial stability' and 'Elders wish the best for their children' The statements showing the most negative response were as follows: 'It is better to die than to live as an older person' ; 'Elders are insignificant' ; and 'Getting old is the worst unhappiness that tortures human.' Four subjects were included in Type 2. Resenting Elders. The statements which showed the most positive consent were as follows: 'Aging is a process of dying that nobody can escape from'. 'Elders should be concerned about his health and try to maintain their health' ; and 'When you set older. you regret about the life in the Past.' The statements showing the most negative response were as follows: 'When You get older. You should stand aloof greed and worldly things' 'When You got older, You become generous and gentle' ; and 'When You set he gets old. You change to become a comfortable and warm person.' Six out of 30 subject were included in Type 3 Caring Elders. The statements which showed the most positive consent were as follows: 'Elders should be concerned about his health and try to maintain their health' ; 'Elders wish the best for their children' ; and 'Elders deserve to be treated with filial respects.' The statements showing the most negative response were as follows 'Elders are insignificant' ; 'Elders have freedom and plenty of free time.' and 'Elders are alienated form and drove out of the society.' The above-mentioned results show that most adolescents in Korea recognize aging as the time of fruition and development: it is a time of benefiting and giving back to society. Aging can also be seen as a time of generosity and magnanimity and the time of respect and favorable treatment from society. despite the change of modern society and the ostensible transformation of a family system. Their recognition seems deeply rooted in the traditional confucian values and the dual family system which is Peculiar especially to the Korea - one which maintains both the superficial form of nuclear family and the substantial mode of the enlarged family system. In sum, many Korean adolescents attribute the meaning of the elderly and aging to the type of the respect with the elderly and the type of the elderly's caretaking.

• Proceeding of Spring/Autumn Annual Conference of KHA
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• 2011.04a
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• pp.215-219
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• 2011

Along with the rapid increase of the elderly population, our country is facing the elderly problem as a social issue due to nuclear family, the increase of female social activities and recognition changes about the elderly support. In this connection, the welfare services to protect the overall elderly is requested urgently and the countries which have been experiencing aging earlier than our country are studying a lot a community daycare method which delays moving of the elderly into facilities as long as possible, reduces costs and efficiently provides services in order to curtail the big burden to the national economy. As one of these solutions, there is the elderly daycare center and this can be considered to be a compromising service type to correspond to our social changes, make individual and social supports without damage to the sense of value about support. Therefore, the space for the elderly can keep up with the falloff of mental and physical functions, dementia and geriatric diseases according to aging and careful consideration about the space considering stability and convenience is required. At this point, this study has the purpose to plan a daycare center which reflects the characteristics of the elderly to protect them within the community safely and comfortably. As for the research method, case study was conducted to understand the overall situation on the space plan of the daycare center for 5 daycare centers located in Seoul and found out problems. In addition, interview research was conducted for the heads of daycare centers or social workers, care workers and photographing and drawing collection were performed simultaneously. From the generalization of the above study, a space plan for a daycare center considering the characteristics of the elderly was provided.

• Journal of Sensor Science and Technology
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• v.8 no.1
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• pp.24-31
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• 1999

Ammonia gas sensors were fabricated with ZnO-based thin films grown by RF-magnetron sputtering method. The films which were doped with $MoO_3$ catalysts of various weight percents were grown in different sputtering gases to fabricate the sensors with a high sensitivity, low working temperature and rapid response time. To improve electrical stability, the films were aged in various conditions. The sensors doped with the catalysts and grown in oxygen sputtering gas showed the improvement of sensitivity. These exhibited the increase of surface carrier concentration and electron mobility. The sensor with 0.875wt.% $MoO_3$ catalysts showed the maximum sensitivity of 70 in ammonia gas concentration of 160 ppm at a working temperature of $300^{\circ}C$. The sensor which is aged at $330^{\circ}C$ for 72hrs in oxygen ambient exhibited tourer sensitivity of 57, but more stable properties, excellent linearity.

• The Journal of the Korea Contents Association
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• v.13 no.10
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• pp.302-312
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• 2013

This research was conducted to explore the influences and factors that are related to the preparation for successful aging life after retirement of Koreans living in Philippine. The subject of survey is the generation of baby-booming(born from 1955-1963) and it was done from June 1 to August 15 in 2011. 150 survey questionnaire sheets were distributed and 126 answered sheets returned. Among them 105 that are to be recognized were analyzed using SPSS 18.0 program. The purpose of this research and the survey is to provide basic sources and information for setting up policies and programs of aged life of the generation. The survey shows that the answers are in comparatively good financial level including average level of physical readiness and mental stability. Relative impacts are also strong in mental attitude and emotional preparation.