• 대한한방종양학회지
• /
• 제9권1호
• /
• pp.99-108
• /
• 2003

Recently, the proportion of the population older has increased rapidly. As the aged population is increasing, the prevalence of malignancy rises with age, too. We believe that the potential benefits of approach to cancer care in the elderly are self-evident. In order to investigate the characteristics of cancer in the elderly, we reviewed literature related with the biology of the aged with cancer. The elderly undergo age-related changes in their physiology which may result in altered tolerance to disease and to the requirements of the management of illness. The possible reasons for the increased prevalence of cancer in the elderly are a longer potential duration of exposure to carcinogens, a reduced ability of repair DNA and reduced host defences against malignancy. In general, cancer patients in the elderly have a shorter survival. Because it is impossible to offer the active treatment of cancer in the elderly. Also, they have the problems that the psychosocial change and reduce of physiological function such as absorption, metabolism and excretion. We hope that other groups will further research cancer in the elderly in future.

• 한국의류학회지
• /
• 제14권4호
• /
• pp.252-261
• /
• 1990

This study intends to provide a beneficial foundation which can aid our understanding of how a clothing consumer group can be classified according to the clothing buying motives, and what differences are there about the importances of stroe image attribute among them and how consumer's preferences to the store image are shown differently among them and ultimately, some concrete data which can be useful in establishing efficient store image strategies for clothing stores. 413 subjects were gathered through convenience sampling method and, for data analysis, cronbach'$\alpha$, frequency, percentage, mean, $x^{2}-text$, 1-test, ANOVA, Duncan Multiple Range Test, Factor Analysis, Cluster Analysis were conducted. The results are as follows; 1. Three kind of factors in the clothing buying motives were determined for analysis of consumers group and by which it was revealed as to be significant for us to classify them four subdivisions; those of fashion pursuit group, self display group, financial utilitarian group, individual group. 2. Importance on store image attribute was revealed then the middle aged women regarded quality, price, service in order as more important factors than others. 3. Store image preferences show significantly when concerned with quality, price, fashion, impression and age of store personnel, convenience for exchanging and returning goods, credit, delivery and repair, mailing of catalogue and discount coupon, exit from, brightness of store among consumer groups. From these findings, concretely store image strategies are proposed.

• 한국콘텐츠학회논문지
• /
• 제10권10호
• /
• pp.294-303
• /
• 2010

일본의 맨션관리의 적정화 추진에 관한 법률은 맨션의 양호한 주거환경을 확보하여 국민생활의 안정을 향상시키고 나아가 국민경제의 건전한 발전을 꾀함을 목적으로 제정된 법률이다. 맨션의 증가와 맨션만이 가지는 거주형태의 특수성, 이에 관련한 법정비의 미비는 일본의 학계와 실무에서 꾸준히 제기된 문제이다. 또한 관리적 측면에서는 관리조합의 운영문제, 유지수선, 관리조합의 관리업자에 대한 관리위탁, 설계 준공도면의 정확한 인도 등의 문제도 지적을 받아왔다. 이러한 문제점을 해결하기 위해 적정화법이 입법되었으나, 결국 적정화법은 맨션 관리에 관한 합의형성 등의 문제에 대해 그 해결책을 제시하고 있는 것으로 평가할 수는 있겠으나 한편으로는 맨션에서의 관리조합 및 구분소유자, 그리고 노후화가 상당히 진행된 맨션에 대해 고민, 예를 들면 거주자의 다양성 등으로 인한, 하는 지자체 등에 대해 여러 형태로의 의무 등을 제안 또는 제시하고 있음으로 해서 적정화법의 원활한 시행에는 다수의 난관이 존재하고 있는 것이 사실이다.

• 한국의류산업학회지
• /
• 제15권5호
• /
• pp.834-840
• /
• 2013

This study aims to suggest practical considerations for designing protective clothing with increased visibility that will have higher user acceptance by law enforcement officers. Light-emitting diode(LED) patrol vests were visually and structurally assessed, and 125 police officers' responses from surveys about user acceptance of the vest were analyzed. The current LED patrol vest was designed for enhanced safety of police officers by increasing visibility in the dark. However, the user acceptance rate of the LED patrol vest indicates low use of and low satisfaction with the vest despite its enhanced safety features. In particular, differences in materials, design, functionality of the pockets and size of the vest depending on the hours worked, were statistically significant. The police officers' responses suggest areas of improvement in design, materials, ease of movement, size and functionality. Key issues include 'tactile discomfort'; 'impeded vision from the glare of the LED'; 'frequent malfunctions of the LED'; 'impossible repair of the broken LED units'; 'no user feedback'; 'inconvenient to replace batteries'; 'brittle materials' and 'unpleasing look'. To increase user acceptance, designer should incorporate context-awareness, a convenient user interface, a modular design approach, first responders' self-image as public servants in relation to their aesthetic perspectives of their uniforms, and scientific evaluation of the effectiveness of the intended functions of the clothing. Suggested implications for designing the LED patrol vest can be applied to designing other functional/protective clothing for intended end users with special needs.

• 지역사회간호학회지
• /
• 제18권3호
• /
• pp.480-491
• /
• 2007

Purpose: This study was to investigate the needs of health & community services among the disabled at home in rural areas. Methods: The subjects were 146 persons with disabilities living in J-gun. The questionnaire was based on the needs of 8 categorical services. Data were analyzed using frequency, percentage, mean, standard deviation, minimum, maximum, t-test, one-way ANOVA and Scheffe test. Results: Among the respondents, 27.4% visited the public health center in community for rehabilitation therapy. The average score of need was $2.62{\pm}.79$: education services $(2.92{\pm}1.05)$; medical services $(2.81{\pm}.82)$ nursing care services $(2.75{\pm}1.08)$; connection services $(2.62{\pm}1.20)$;, housing services $(2.60{\pm}1.09)$; emotional services $(2.41{\pm}1.03)$; other services $(2.24{\pm}1.06)$; and support of self-sustenance service $(1.92{\pm}1.15)$. The items in highest need were medical checkup (70.7%), medication (62.1%), traditional oriental therapy (60.4%) and physical therapy (58.9%), and those of lowest need were device repair (8.7%) and guidance of facility admission (7.1%). Needs were significantly different according to age (F=4.751. p=.001), employment status (t=2.108, p=.037) and medical fee payer (F=5.061, p=.002). Conclusion: The needs of education & medical services were relatively high. Demographic factors were statistically significant in determining needs. For the disabled at home in rural areas, more various services or programs should be executed based upon the needs and characteristics of based upon the needs and characteristics of the subjects.

• 한국가스학회지
• /
• 제7권2호
• /
• pp.7-13
• /
• 2003

본 연구에서는 국내 휘발성 유기화합물질의 주요 취급시설에 대한 조사를 통하여 배출원별 배출메카니즘을 정립하고, 새로운 배출량산정모델을 제안하였다. 또한 각 배출원에 적용가능한 배출저감기술과 각 기술의 경제성 평가기법을 제안하였다. 여기에 배출원 DB, 화학물질물성치 DB, 기상정보 DB, 배출계수 DB 등의 정보를 연계하여 휘발성유기화합물질 배출량산정 및 관리 소프트웨어 VEER(VOCs Emission Estimation and Reduction)를 개발하였다. 결국 본 연구를 통해 개발된 VEER를 이용하여, 휘발성 유기화합물질 취급업체, 관리기관, 연구기관 등에서 쉽고 정확하게 배출원 인벤토리를 구축하고, 배출량을 산정하며, 계산된 결과를 바탕으로 각 배출원의 배출유량과 농도에 적합한 휘발성 유기화합물질 배출 저감기술을 선택하고, 여러 저감기술들에 대한 경제성을 평가함으로써, 저비용의 배출량 저감 및 배출원 관리기술을 선택하고, 설계할 수 있을 것으로 기대된다.

• Journal of Chest Surgery
• /
• 제25권5호
• /
• pp.511-517
• /
• 1992

From January 1988 to December 1990, 18 adult patients with aortic disease underwent surgical repair using hypothermia and total circulatory arrest. The age at operation ranged from 17 years to 64 years[mean 45.2$\pm$10.7 years]. We disease entities included aortic dissection in 12, aortoannuloectasia in 3 and thoracic aortic aneurysm in 3 cases. Partial cardiopulmonary bypass via femoral vessels along with surface cooling was used upon the induction of deep hypothermia[18~20oC]. Modified Bentall operation was performed in 7 cases, ascending aorta replacement in 6, graft interposition in descending thoracic aorta in 3 and others in 2 cases. The circulatory arrest was maintained for periods of 2 minutes to 86 mimutes[mean 34.7$\pm$5.0 minutes]. Overall hospital mortality was 27.8%[5/18]: brain damage was responsible for the death of 2 patients. 4 patients out of 13 survivors experienced postoperative neurologic dysfunction, which was proved to be self-limited except one case showing left hemiparesis. 12 patients were followed up postoperatively with the mean follow-up period 22.7$\pm$10.1 months. There was no death. No new neurologic problems were observed during follow-up period. All but one patient showing recurrent dissection and aortic regurgitation are in exellent clinical condition. These clinical data suggests that the principle of deep hypothermia and total circulatory arrest can be applied rather safely in adult patients, especially in the treatment of patients with aortic disease, it can be a valuable adjunct with better clinical results.

• Tribology and Lubricants
• /
• 제37권2호
• /
• pp.48-53
• /
• 2021

Wind energy is considered as the most competitive energy source in terms of power generation cost and efficiency. The power train of the pitch drive for a wind turbine uses a 3-stage complex planetary gear system in being developed locally. A gear train of the pitch drive consists of an electric or hydraulic motor and a planetary decelerator, which optimizes the pitch angle of the blade for wind generators in response to the change in wind speed. However, it is prone to many problems, such as excessive repair costs in case of failure. Complex planetary gears are very important parts of a pitch drive system because of strength problem. When gears are designed for the power train of a pitch drive, it is necessary to analyze the fatigue strength of gears. While calculating the specifications of the complex planetary gears along with the bending and compressive stresses of the gears, it is necessary to analyze the fatigue strength of gears to obtain an optimal design of the complex planetary gears in terms of cost and reliability. In this study, the specifications of planetary gears are calculated using a self-developed gear design program. The actual gear bending and compressive stresses of the planetary gear system were analyzed using the Lewes and Hertz equation. Additionally, the calculated specifications of the complex planetary gears were verified by evaluating the results from the Stress - No. of cycles curves of gears.

• 한국방사선학회논문지
• /
• 제13권1호
• /
• pp.73-80
• /
• 2019

사이클로트론 가동 시 핵반응으로 인해 중성자가 발생되며, 발생된 중성자는 콘크리트벽에 흡수되어 방사화를 일으키게 된다. 이에 본 연구에서는 콘크리트 종류에 따른 방사화 분석과 방사화 핵종이 미치는 영향에 대해 알아보고자 하였다. 실험은 몬테카를로 시뮬레이션 및 RESRAD 모델을 사용하였다. 실험 결과 콘크리트의 Fe 함유량이 높을수록 차폐율이 증가하였으며, Fe은 $^{56}Fe(n,\;2np)^{54}Mn$ 반응으로 인하여 종사자에게 미치는 영향 또한 같이 증가하였다. 하지만, 방사화로 생성된 핵종의 방사능은 매우 낮게 나타나 종사자들에게 미치는 영향은 매우 낮은 것으로 나타났다. 방사화된 콘크리트 해체 처분 시 방사능이 자체처분 한도 미만으로 일반폐기물로써 처리되어야 하며, $^{14}C$의 영향을 최소화하기 위해 매립이 아닌 도로 보수와 같은 표층에 재활용 되어야 할 것이다.

• Journal of Animal Science and Technology
• /
• 제65권1호
• /
• pp.16-31
• /
• 2023

Cultured meat is a potential sustainable food generated by the in vitro myogenesis of muscle satellite (stem) cells (MSCs). The self-renewal and differentiation properties of MSCs are of primary interest for cultured meat production. MSC proliferation and differentiation are influenced by a variety of growth factors such as insulin-like growth factors (IGF-1 and IGF-2), transforming growth factor beta (TGF-β), fibroblast growth factors (FGF-2 and FGF-21), platelet-derived growth factor (PDGF) and hepatocyte growth factor (HGF) and by hormones like insulin, testosterone, glucocorticoids, and thyroid hormones. In this review, we investigated the roles of growth factors and hormones during cultured meat production because these factors provide signals for MSC growth and structural stability. The aim of this article is to provide the important idea about different growth factors such as FGF (enhance the cell proliferation and differentiation), IGF-1 (increase the number of myoblasts), PDGF (myoblast proliferation), TGF-β1 (muscle repair) and hormones such as insulin (cell survival and growth), testosterone (muscle fiber size), dexamethasone (myoblast proliferation and differentiation), and thyroid hormones (amount and diameter of muscle fibers and determine the usual pattern of fiber distributions) as media components during myogenesis for cultured meat production.