• KIEAE Journal
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• v.16 no.3
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• pp.113-119
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• 2016

Purpose: In this study, we evaluate the annual energy performance of the detached house which was designed with the aim of zero energy. Method: The experimental house which was constructed in Gonju Chungnam in 2013, is the single family detached house of light weight wood frame with $100m^2$ of heating area. Thermal transmittance of roof (by ISO 10211) and building external walls are designed as $0.10W/m^2K$ and $0.14W/m^2$ respectively and low-e coating vacuum window glazing with PVC frame was installed. Also grid connected PV system and natural-circulation solar water heater was applied and 6kWp capacity of photovoltaic module was installed in pitched roof and $5m^2$ of solar collector in vertical wall facing the south. We analyzed the 2014 annual data of the detached house in which residents were actually living, measured though web-based remote monitoring system. Result: First, as a result, total annual energy consumption and energy production (PV generation and solar hot water) are 7,919kWh and 7,689kWh respectively and the rate of energy independence is 97.1% which is almost close to the zero energy. Second, plug load and hot water of energy consumption by category showed the highest numbers each with 33% and 31%, with following space heating 24%, electric cooker 8%, lighting 3% in order. Hot water supply is relatively higher than space heating because high insulation makes it decreased.

• Journal of East-West Nursing Research
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• v.18 no.2
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• pp.111-119
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• 2012

Purpose: Recently, Neurofeedback training system that based on biofeedback of brain wave was introduced. This study was performed to identify the effects of the improvement of brain function by Neurofeedback training on elders(the 2nd or 3rd grade of long-term care insurance services). Methods: A quasi-experimental design using a nonequivalent control group, pre-post test was used. Total 11 elderly were enrolled in this study (experimental group 5, control group 6). The intervention was conducted 3 times a week for 30 minutes from January to June, 2012 (total 60 times). Chi-square test and Mann-Whitney U-test were used to analyze the data. Results: After the Neurofeedback intervention, attention quotient (AQ), anti-stress quotient (ASQ), emotion quotient (EQ) and brain quotient (BQ) of the experimental group were significantly better than those of the control group. Conclusion: The findings indicate that the Neurofeedback training program was effective in reducing fatigue by AQ, increasing the physical and mental stress resistance by ASQ, emotional balance by EQ and improving of total brain function by BQ. Therefore Neurofeedback training be used as an effective training intervention for the health of elderly in geriatric facility.

• The Bulletin of The Korean Astronomical Society
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• v.37 no.1
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• pp.36.2-36.2
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• 2012

The aim of this study was to explore the role of galaxy mergers on the formation and evolution of galaxies in galaxy clusters. For this purpose, u', g', r' deep optical imaging and multi-object spectroscopic observation were done for four rich Abell clusters at z ${\lesssim}$ 0.1 (A119, A2670, A3330, and A389) with a MOSAIC 2 CCD and Hydra spectrograph mounted on a Blanco 4-m telescope at CTIO. With the deep images, we found that about 25% of the bright red-sequence galaxies exhibited post-merger signatures in a cluster environment. This fraction was much higher than what was expected from the results of the field environment (-35%, van Dokkum 2005) and significantly low on-going merger fractions (about one-fifth of the field) appeared in the clusters currently. Taking advantage of the most up-to-date semi-analytic model, the results indicate that most of the post-merger galaxies may have carried over their merger features from their previous halo environment. All the brightest cluster galaxies in our cluster samples revealed faint structures in their halos as well as multiple nuclei in their centers seen in the deep optical images. We suggest that the mass of the BCGs increased mainly though major mergers at recent epochs based on their post-merger signatures and the large gaps in the total magnitudes between the BCGs and the second-rank BCGs. A UV bright tidal tail and tidal dwarf galaxy (TDG) candidates around the post-merger galaxy, NGC 4922, were discovered in the outskirts of the Coma cluster using the GALEX UV data. We did two-component stellar population modeling for the TDG candidates and the results indicate that they are an early form of dwarf galaxies frequently found around massive early-type galaxies in clusters. In conclusion, we suggest that the mergers of galaxies are an important driving force behind galaxy formation and evolution in cluster environments even until recent epochs.

• Journal of Digital Convergence
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• v.2 no.2
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• pp.119-131
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• 2004

본 연구의 목적은 한국에서 시도된 국가지리정보체계(NGIS)구축의 1단계사업에 대한 정책적인 측면에서 해외의 NGIS와 비교하여 2, 3단계 사업의 성공화를 도출하는데 있다. 본 연구의 첫 장에서는 Masser(1999)에 의한 세계 NGIS 추진 10개국의 정책과 핵심분야를 한국의 NGIS와 비교 분석하여 장단점을 제시하였다. 2장에서는 한국의 NGIS정책에 대하여 구체적으로 분석하여 3장에서 한국 NGIS의 핵심5대 분야와 연계한 결과 및 평가의 구체성과 4장에서 한국의 미래 NGIS의 방향을 동시에 제시하였다. 세계적으로 90년대 후반에 시작된 국가지리정보체계의 구축사업 중에서 11개국에 대한 선행정책연구 분석에서 볼 때 한국이 포함된 7개 국가에서 정부주도형의 하향식(Top-down)형식으로 수행하였으며, 3개 국가는 기존 수행체계를 발전시킨 상향식(Bottom-up) 형식이었고 나머지 한 국가는 절충형의 후발주자에 속하여, 한국의 NGIS 1단계사업은 국가주도형의 정책이 주종을 이루는 하향식 정책의 국책사업으로 밝혀졌다. 한국의 1단계 NGIS사업의 정책과 분야는 1995년부터 정부주도 정책에 따라서 2억 $(중앙정부: 64%, 지방정부: 36%)의 예산으로 2000년까지 11개 중앙부처가 참여하고 5개 분과위원회(총괄분과, 지리정보분과, 토지정보분과, 기술개발분과, 표준화분과)에서 10개 사업(지형도전산화사업, 주제도 전산화사업, 지적도전산화사업, 지하시설물도전산화사업, 지하시설물 관리체계개발시범사업, 공공GIS활용체계개발사업, GIS기술개발, GIS전문인력육성, GIS표준화사업, 국가GIS지원연구사업)을 수행한 대규모 국책연구개발사업이었다. 따라서 한국의 미래 NGIS 정책방향은 국가공간정보기반조성을 통한 디지털국토구축으로 국가 Agenda인 'u코리아'를 실현시키고 선진형 대민서비스를 제공하는 것으로 정해질 것이다.

• Journal of Technologic Dentistry
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• v.30 no.2
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• pp.105-119
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• 2008

This study explored the status of free time activities among the dental technicians who are working at Seoul, Gyonggido, and Gangwondo. On the basis of this research, we aim to present needs and applicable solutions to improve the working conditions and enhance the quality of life through more effective time management in free time activities that lead to their self development and far more enriched life. 500 subjects were randomly chosen and the questionary sheets were provided. Among them, 305 sheets were returned to be analysed through SPSS Win 10.0 software and the results are as follows; First, mean in the satisfaction of leisure activities was 3.44(SD=.73). Mean in sub categories was as follows; psychological factor(M=3.65, SD=.71), social factor(M=3.54, SD=.75), rest factors(M=3.52, SD=.63), physical factor(M=3.43, SD=.88), other factors(M=3.40, SD=.66), circumstantial factor(M=3.33, SD=.63), educational factor(M=3.24, SD=.73). Second, the most relevant sub categories in the satisfaction of leisure activities were social, educational, physical, and other circumstantial factors by sequence. Factors that affect leisure activities satisfaction were career and status of health, which shows statistical significance(p<.001). That is to say, contention of this study is that the general characteristics are closely related with and affect the types and the level of satisfaction in leisure activities of the subjects. Considering these results, the dental businesses and the associations of dental technicians should recognize the needs to improve the time management through more efficient cooperations between dentists and back office dental team, systemized working time, and introduction of incentive system among others. On the basis of this appreciation, the dental business should provide more time and various opportunities with the dental technicians. Dental technicians also need to reconsider their appreciations of leisure activities, that is, leisure activities are not just spending time doing something but they refresh them and enable them to be more active and faithful to home and work.

• Journal of the Korean housing association
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• v.28 no.1
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• pp.63-72
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• 2017

The purpose of this study is to investigate the overall recognition on attitudes of well-dying and evaluation the importance of planning factors of well-dying space in college students. This will serve as a basis to accumulate materials on the recognition of well-dying and well-dying spaces of various generations of South Korea. This study conducted a survey from October 4th to 8th, 2016 with 119 college students from U University and K University. As the contents of the survey, were comprised of general socio-demographic elements, subjective recognition and attitudes toward well-dying, and the importance of the planning factors of the physical, emotional, social and spiritual environments of the well-dying space. The main results are as follows. (1) The interest of university students on death education is high, and there was a preference for 'home' where they could be comfortable and be with loved ones as the space for dying. Also, in case of events of bereaving them after death, formal grieving ceremonies were undesired. The funeral was desired to be simple, serene, and not too sad. (2) In evaluation of the importance of physical, emotional, and spiritual environmental planning factors, physical environmental factors were considered to be the most important overall, and the recognition of importance of the planning factors of spiritual environment was low.

• International Journal of Highway Engineering
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• v.10 no.3
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• pp.119-128
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• 2008

On the many highways, severe traffic congestions happen chronically and make traffic problems like reduction of mobility because of rapid increase of vehicles though road construction has been last. In order to solve these traffic problems, it is needed to find the trend and the symptom of traffic congestion and to analyze the cause of congestion and the(spatial) range affected by congestion. To develop the traffic condition monitoring index prior to doing all those things is most important. With this reason, many countries including U.S. had been developed the congestion criteria and indices. In this paper, applicability and characteristics of existing traffic congestion indices were considered and the direction for development of a new traffic condition index was suggested to achieve an effective traffic management.

• Journal of Technology Innovation
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• v.21 no.3
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• pp.95-119
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• 2013

There are increasing policy and academic interests on technology commercialization of public research organizations. Prior researches have focused on institutional factors and organizational differences between academics and public research organizations. Using a new data on individual-level characteristics and commercialization, we examine the effects of prior experience and total number of research projects on commercialization performance. We find strong positive relationships between prior experience and commercialization performance. Also we find a inverted U-curved relationships between total number of research projects and commercialization. Based on these results, we suggest some policy implications to promote technology commercializations of public research organizations.

• Journal of Families and Better Life
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• v.22 no.6 s.72
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• pp.111-119
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• 2004

A rapid increase of the elderly population and changes in the social structure, family type and lifestyle bring us to the moment for considering the various aspects of supporting the elderly including the elderly housing facilities. Traditionally it is considered as a merit for a son to support parents in his own house. Hut recently the elderly increasingly want to live independently without support from their children. To satisfy these needs, new housing facilities for the elderly were developed by private non-profit foundations. A number of outstanding housing facilities for the elderly have been built in the last five years. These facilities show significant progress in housing for the elderly. Unfortunately, there u e no standard design checklists or guidelines for housing for the elderly available in Korea. The housing facilities were built based on foreign design guidelines or architect's experience. This research aims to develop an affordable design checklist that can meet the needs of the Korean elderly lifestyle. This study evaluated the senior residential facilities using Woo's checklist which consolidated the guidelines available here and abroad. As the result of this study, we presented the checklist subject in upper group $25\%, middle group, lower group $25\% distribution and 6, 5, 4, categories in order to importance. When designing the future senior residential facilities, a constraint can be made based on the scope and financial factors of the facility first and the determine how extensive the application of the checklist should be.

• Journal of Radiation Protection and Research
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• v.36 no.3
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• pp.119-126
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• 2011

Mitochondrial DNA (mtDNA) deletion is a well-known marker for oxidative stress and aging, and contributes to harmful effects in cultured cells and animal tissues. mtDNA biogenesis genes (NRF-1, TFAM) are essential for the maintenance of mtDNA, as well as the transcription and replication of mitochondrial genomes. Considering that oxidative stress is known to affect mitochondrial biogenesis, we hypothesized that ionizing radiation (IR)-induced reactive oxygen species (ROS) causes mtDNA deletion by modulating the mitochondrial biogenesis, thereby leading to cellular senescence. Therefore, we examined the effects of IR on ROS levels, cellular senescence, mitochondrial biogenesis, and mtDNA deletion in IMR-90 human lung fibroblast cells. Young IMR-90 cells at population doubling (PD) 39 were irradiated at 4 or 8 Gy. Old cells at PD55, and H2O2-treated young cells at PD 39, were compared as a positive control. The IR increased the intracellular ROS level, senescence-associated ${\beta}$-galactosidase (SA-${\beta}$-gal) activity, and mtDNA common deletion (4977 bp), and it decreased the mRNA expression of NRF-1 and TFAM in IMR-90 cells. Similar results were also observed in old cells (PD 55) and $H_2O_2$-treated young cells. To confirm that a increase in ROS level is essential for mtDNA deletion and changes of mitochondrial biogenesis in irradiated cells, the effects of N-acetylcysteine (NAC) were examined. In irradiated and $H_2O_2$-treated cells, 5 mM NAC significantly attenuated the increases of ROS, mtDNA deletion, and SA-${\beta}$-gal activity, and recovered from decreased expressions of NRF-1 and TFAM mRNA. These results suggest that ROS is a key cause of IR-induced mtDNA deletion, and the suppression of the mitochondrial biogenesis gene may mediate this process.