• 한국통신학회논문지
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• 제28권6A호
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• pp.371-378
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• 2003

CDMA 시스템에서 셀의 용량은 그 셀에서 사용 가능한 채널의 수로 정의되고, 이는 셀이 받는 간섭의 양에 의해 제한된다. 새로운 이동국이 홈 셀 에서 호가 수락되었을 경우, 이는 홈 또는 인접 셀 에 간섭을 준다 따라서, 본 논문에서는 홈 셀은 새로운 호를 수락할 만큼 용량이 충분하고, 새로운 이동국이 홈 셀에 수락되었을 때 이동국의 송신 전력을 예측 계산한 후, 이를 이용하여 인접 셀들이 받을 간섭의 양을 예측하여 인접 셀 들에서 QoS(Quality of Service)가 보장될 경우 호를 수락하는 이동국의 송신 전력 예측에 기반을 둔 호 수락 방식을 제안한다. 모의 실험 결과 제안한 방식은 인접 셀 에서 기존 호의 회손 확률(outage probability)이 현저히 감소함을 보여 준다.

• International Journal of Industrial Entomology and Biomaterials
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• 제19권1호
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• pp.193-197
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• 2009

We report an evaluation of the immunostimulatory effect of propolis volatiles from a stingless honeybee. We studied 34 elderly residents at a special nursing home. Twenty-one subjects were treated with propolis, 8 with $Binch\hat{o}$ charcoal and 5 subjects acted as controls. Subjects treated with either propolis or Bincho charcoal were housed in rooms separated from the other non-study residents in the nursing home. The effects of each treatment on natural killer (NK) cell activity and lymphocyte levels were examined after 2 months and then for a longer period. The results indicated that NK cell activity was significantly improved to that within the normal range only after propolis treatment.

• 기술사
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• 제44권3호
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• pp.25-29
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• 2011

The fuel cell, a renewable energy facility, hasn t come into wide use to the public. However, the usefulness of it is so high through Supply Business called Green Home, general auxiliary Supply Business, obligation to supply renewable energy for public organizations, Building Certification System and compulsory quota of using renewable energy to power generating businesses, etc. Intial installation was supported by government and a local autonomous entities in case of home fuel cell. Cost-benefits of installing it in home are approximately from $1,000 to $2,500. As Korea applies a progressive tax scheme in home electricity, energy costs are associated with electricity consumption. We should contemplate ways to make effective use of additional waste heat because technology of fuel cell is kind of a cogeneration.

• 대한간호학회지
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• 제42권1호
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• pp.95-104
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• 2012

Purpose: The purpose of this study was to identify the effects of a home based exercise program for patients with stomach cancer who were undergoing oral chemotherapy. Methods: The home-based exercise program was developed from the study findings of Winningham (1990) and data from the Korea Athletic Promotion Association (2007). The home-based exercise program consisted of 8 weeks of individual exercise education and exercise adherence strategy. Participants were 24 patients with stomach cancer who were undergoing oral chemotherapy following surgery in 2007 or 2008 at a university hospital in Seoul. Patients were randomly assigned to either the experimental group (11) or control group (13). The effects of the homebased exercise program were measured by level of cancer related fatigue, NK cell ratio, anxiety, and quality of life. Data were analyzed using SPSS/WIN 13.0 version. Results: The degree of cancer related fatigue and anxiety in the experimental group decreased compared to the control group. The NK cell ratio and the degree of quality of life of experimental group increased while that of the control group decreased. Conclusion: This study result indicate the importance of exercise and provide empirical evidence for continuation of safe exercise for patients with cancer during their chemotherapy.

• Journal of Korean Biological Nursing Science
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• 제3권1호
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• pp.11-28
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• 2001

This study was to identify the levels of perceived stress, immunity cells, physical health and depression, and their relationships among those variables in the elderly who institutionalized comparing home residents. The result of this study can be used as basic data when applying nursing interventions to increase quality of life in the elderly. The questionnaires to estimate stress, health status and depression were collected through direct interview from July to August in 1999 and immunity cells were measured by venous blood specimen collected from 9 to 10 A.M. during the same period. The collected data were analysed using SAS program. The results were as follows. The score of perceived stress of all subjects was 38.49 and perceived stress score of institutionalized elderly(42.62) was significantly higher than that in home resident elderly(34.52). All immune cells tested in this study such as total T cell, helper T cell, suppressor T cell, T4/T8 ration, total B cell, and NK cell, were all under the standard criteria of cells distributions. Most elderly who institutionalized and reside home replied that their health status was not good. However their physical health activity was mostly good even though institutionalized elderly had more disability than home residents. The highest rate was 67.3% as disability due to arthritis. The score of depression in all subjects was 8.2 that indicated having depressive symptom. There was no difference in the depression level between institutionalized elderly and home resided elderly. There was a significant correlationship between physical health and depression, however, the rest of varibles did not show any significant relationships. In summary, the immune cells in the elderly who replied perceiving low level stress, was under normal range. Their health status was perceived as 'not good' but physical health activity was perceived as 'good'. The relationships of stress, immunity, physical health and depression were partially significant but not had evidence as enough as theoretically the suggested relationship. We suggest that further studies using large sample size and more diverse variables should be performed.

• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2011년도 춘계학술대회 초록집
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• pp.89.1-89.1
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• 2011

According to green growth's policy, green-home dissemination's projects are promoting. Among them, stationary fuel cell systems are receiving attention due to high efficiency and clear energy. But it need absolutely to develop cost down technologies and improve system durability for commercialization of the fuel cell system. To achieve this objectives, in 2009, the Korean Government and "Korea Institute of Energy Technology Evaluation and Planning(KETEP)" launched into the strategic development project of BOP technology for practical applications and commercializations of stationary fuel cell systems, named "Technology Development on Cost Reduction of BOP Components for 1kW Stationary Fuel Cell Systems to Promote Green-Home Dissemination Project". This paper introduces a summary of improved BOP performances that has been achieved through the 2nd year development precesses(2010.06~2011.05) base on 1st year development precesses(2009.06~2010.05). The major elements for fuel cell systems are cathode air blowers, burner air blowers, preferential oxidation air blowers, fuel blowers, cooling water pumps, reformer water pumps, heat recovery pumps, mass flow meters, electrical valves, safety valves and a low-voltage inverter. Key targets of those elements are the reduction of cost, power consumption and noise. Invert's key targets are development the low -voltage technologies in order to reduce the number of unit cell in fuel cell system's stack.

• 대한가정학회지
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• 제34권4호
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• pp.403-414
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• 1996

The softening of the femented vegetables and the fruits was resulted from the degradation of pectin substances, cellulose, hemicellulose by polygalacturonase(PG), pectinesterase(PE), Cx-cellulase, $\beta$-galctosidase. The conversion of insoluble pectin to soluble pectin in cell wall-middle lamella was a major factor in the changes of firmness. Ca2+ was substantially increased firmness. However, Ca2+ could be removed from cell wall by chelating agents such as oxalic acid and citric acid. And Ca2+ was replaced with Na+ by ion exchange reaction. Ca2+ deficient tissue was vulnerable to attack by PG. Preheating treatment and Ca2+ addition is most effective in inhibiting the vegetable food softening and in increasing middle lamella-cell wall regidity, which PE activation by preheating treatment and Ca2+ addition could created more anionic carboxyl groups for cationic materials binding such as Ca2+ and chitosan and for polypectategel formation. Excessive demethylation by PE was associated with loosening of middle lamella cell wall components and softening.

• 정보보호학회논문지
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• 제23권1호
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• pp.19-32
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• 2013

사이버 주식거래가 증가함에 따라 홈트레이딩 시스템을 이용한 주식거래가 활발해지고 있다. 홈트레이딩 시스템은 개인투자자 대다수가 이용하는 방법으로 코스닥에서는 75%도 가장 큰 비중을 차지하고 있으며, 코스피에서도 40%의 점유율을 기록하고 있다. 하지만 홈트레이딩 시스템은 사용자의 속도와 사용자 편의성에 초점을 맞추고 있어 보안기능이 다소 미흡함을 발견하였다. 본 논문에서는 홈트레이딩 시스템 사용시 메모리에 인증정보가 평문으로 남는 취약점을 기반으로 메모리 덤프 툴을 이용하여 주식부정거래 가능성을 분석하고 휴대전화 SMS를 이용한 투채널 인증으로 주식부정거래에 대응할 수 있는 인증기법을 제시한다.

• 대한지역사회영양학회:학술대회논문집
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• 대한지역사회영양학회 2005년도 10th Anniversary International Symposium
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• pp.61-61
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• 2005

• 한국식품영양과학회지
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• 제14권2호
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• pp.108-116
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• 1985

This study was designed to investigate the nutritional anemic state and hematological findings of children, aged 11 and 12 years, living in Haenam Koon (living at home) and in Mokpo City (living in an orphan asylum) located in Chonnam. The mean red blood cell number of male was higher than female in both groups of living in the rural area and in the city orphan asylum (p<0.01), but the white blood cell count was not significantly different. The levels of average hemoglobin, hematocrit and mean corpuscular hemoglobin concentration of the children in both groups were similar, and 19.8% of children living at home in the rural area and 32.1% of children living in the city orphan asylum were anemic. The mean levels of serum total protein, albumin and A/G ratio in children of both group were not statistically different, and 18.4% of children living at home in the rural area and 13.2% of children living in the city orphan asylum were insufficient in the serum total protein value. The average serum cholesterol level of children living at home in the rural area was higher than that of children living in the city orphan asylum(p<0.01), and that of female living at home was higher than that of male (p<0.05). The mean levels of serum iron, total iron binding capacity and transferrin saturation of children living at home in the rural area were significantly higher than those of children living in the city orphan asylum (p<0.01).