• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2003년도 International Meeting on Information Display
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• pp.362-364
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• 2003

In this study, sintering behavior of closed-cell type barrier ribs formed via capillary molding route was examined. Sintering of the molded barrier ribs revealed asymmetric shrinkage, leading to distortion of the cells. The effects of the parameters such as solid loading in the paste, presintering temperature, and morphology of the barrier ribs on the sintering shrinkage of the barrier ribs were investigated.

• 대한수학회지
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• 제44권2호
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• pp.455-466
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• 2007

The zero-distribution of the Fourier integral $${\int}^{\infty}_{-{\infty}}\;Q(u)e^{p(u)+^{izu}du$$, where P is a polynomial with leading term $-u^{2m}(m\;{\geq}\;1)$ and Q an arbitrary polynomial, is described. To this end, an asymptotic formula for the integral is established by applying the saddle point method.

• 한국생활과학회지
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• 제16권4호
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• pp.837-848
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• 2007

The literature suggested that a small reduction in overall blood pressure can have a large effect on overall prevalence of hypertension, and therefore, the affect of taste preferences of the population on salt intake should be considered for long-term blood pressure intervention programs. The purpose of this study is to investigate the influence of salt taste preference and salt taste sensitivity on salt intake behavior as risk factors for high blood pressure. We collected information on blood pressure, diet and lifestyle behaviors, salt taste preference and salt taste sensitivity from 540 respondents from Suseo-dong, Seoul. Salt taste sensitivity was assessed by administering a 1% NaCl solution to the subject's tongue and measuring the perceived intensity on 10 level scale. Salt intake behavior was classified into 3 categories: frequency of high-sodium foods, practice of salt-reducing behavior and frequency of vegetable and fruit intake. Salt taste preference showed a significant relation to the subjects' blood pressure, i.e. subjects with a higher salt preference had higher blood pressure. Salt taste sensitivity did not show a significant relation to blood pressure. However, there was a positive correlation between salt taste preference and salt taste sensitivity. Among the 3 indicators used to measure salt intake behavior, the practice of salt-reducing behavior remained significantly correlated to blood pressure. Moreover, salt-reducing behavior and salt taste preference showed a significant correlation, i.e. people who do not like salty foods tend to practice more salt-reducing behavior, leading to reduced levels in blood pressure. In a population, a small reduction in overall blood pressure can have large effects in overall prevalence of hypertension, in contrast to clinical studies where achievement of an individual's normal blood pressure is emphasized. Therefore, taste preference of the population should be considered for long-term blood pressure intervention programs.

• Journal of Korean Biological Nursing Science
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• 제9권2호
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• pp.105-117
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• 2007

Purpose: The purpose of this study was two folds: first, to identify the level of self care behavior of the hemodialysis patients and second, to find the correlation between the self care behavior and the physiologic indices. Method: The subjects were 52 hemodialysis patients, male and female, who have regularly received hemodialysis dialysis at the Dialysis Room in a leading teaching hospital, Seoul. The patients responded to the self care behavior questionnaires including their socio-demographic characteristics. The respondents have regularly recorded the self care log book. The physiologic indices, clinical characteristics related to the disease and hemodialysis were collected by the chart review. Result: The mean score of the self care behavior was 3.46. The mean score of the self care behavior on categories demonstrated as follows: medication 4.29, fistula management 4.13, management of physical problem 3.71, diet 3.28, exercise and rest 3.22, blood pressure and body weight management 2.97 and social adjustment 2.05 in order. Thirty patients managed discomfort of their fistula. Eleven patients took exercise for 0.5-1 hr/week. Thirty patients measured their body weight daily and thirty two measured their blood pressure daily. The score of self care behavior was significantly correlated with the mean weight gains between the dialysis sessions(r=-.312, p=.05). The mean weight gains between dialysis sessions was found to be high as the level of serum phosphorus and potassium increased(r=-.316, p=.05, r=-.465, p=.01). Conclusion: The result suggests that nursing intervention to the hemodialysis patients to improve self care behavior should be encouraged and further developed.

• 한국유통학회지:유통연구
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• 제9권2호
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• pp.75-99
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• 2004

공급 사슬을 구성하는 개별기업들의 관계를 하나의 확장된 기업(extended enterprise)의 내부관계로 인식하려는 최근의 추세에 비추어 볼 때, 이들 구성기업간의 협력과 자발적인 행동을 이끌어 내는 것은 궁극적으로 거래 전체의 효율성과 효과성을 높이는데 중요한 역할을 한다. 본 연구는 이론적 흐름을 토대로 하여 지금까지 연구되어온 조직시민행동을 기업간 교환관계에 적용하여 관계적 시민행동(relational citizenship behavior)이라 정의 내리고 공급업체에 대한 신뢰, 공급업체의 영업사원에 대한 신뢰, 구매업체의 관계몰입, 관계적 시민행동간의 관계를 규명하고자 하였다. 본 연구의 모형검증을 위해 수도권에 소재하고 있는 138개 유통업체의 구매담당자를 대상으로 자료가 수집 및 분석되었다. 분석 결과, 공급업체에 대한 신뢰와 공급업체의 영업사원에 대한 신뢰는 구매업체의 관계몰입에 유의한 영향을 미치는 것으로 나타났으며, 관계몰입은 관계적 시민행동(협력적 행동, 비불평성, 공익성)에 긍정적인 미치는 것을 실증하였다. 그러나 공급업체의 영업사원에 대한 신뢰는 관계적 시민행동에 직접적인 영향을 미치는 반면, 공급업체에 대한 신뢰는 구매업체의 관계적 시민행동에 직접적인 영향을 미치지 못하는 것으로 나타나 관계몰입을 통한 간접효과만이 유의한 것으로 나타났다. 끝으로 이러한 결과의 이론적 및 실무적 시사점이 논의되고, 연구의 한계점과 미래의 연구방향이 제시되었다.

• 한국산학기술학회논문지
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• 제14권9호
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• pp.4303-4312
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• 2013

본 연구는 비영리 사회복지조직 구성원의 사회적기업가정신이 협조적행동에 미치는 영향력을 살펴보았으며 이들의 관계에서 가치일치의 매개효과를 검증하였다. 전국 사회복지기관에 종사하는 구성원을 대상으로 검증한 결과, 첫째, 사회적기업가정신의 구성요소 중 혁신성, 위험감수성, 사회적가치지향성이 유효하며 둘째, 사회적기업가정신의 혁신추구성향과 사회적가치지향성이 영향을 주며 위험감수과정에서는 협조적행동에 영향을 주지 않았다. 셋째, 구성원의 가치일치가 협조적행동에 긍정적인 영향을 미쳤으며 넷째, 사회적기업가정신과 협조적행동 간에 가치일치가 부분매개하는 것으로 나타났다. 이는 사회적기업가정신이 높을수록 가치일치가 높아지고 이를 통해 협조적행동이 높아진다고 할 수 있다. 또한 조직구성원들의 협조적행동을 강화시키기 위해서 가치일치가 중요하며 사회적기업가정신을 갖춘 직원을 채용하거나 직원교육을 강화하는 노력이 필요하다는 것을 알게 되었다는 점에서 의의를 갖는다.

• Nuclear Engineering and Technology
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• 제41권2호
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• pp.143-148
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• 2009

The increasing power and other demands on PWR fuel is leading to a demand for cladding that has low corrosion but that should also be robust with regard to mechanical behavior, impact of the irradiation environment and the coolant chemistry. The Optimized $ZIRLO^{TM}$ cladding is an evolutionary development of $ZIRLO^{TM}$ taking advantage of the long experience of the ZIRLO cladding but has significantly improved corrosion behavior. Recently, operation of Optimized ZIRLO to above 73 kWd/kgU has shown a reduction of the corrosion of almost 50%.

• 대한수학회보
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• 제48권2호
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• pp.397-412
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• 2011

In this paper, the equation of the transient Stokes flow of an incompressible viscous fluid is studied. Growth and decay estimates are established associating some appropriate cross sectional line and area integral measures. The method of the proof is based on a first-order differential inequality leading to an alternative of Phragm$\'{e}$n-Lindell$\"{o} $f type in terms of an area measure of the amplitude in question. In the case of decay, we also indicate how to bound the total energy.

• 한국안전학회지
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• 제13권4호
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• pp.131-136
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• 1998

The creep behavior and failure mechanism of the 30 vol% hot-pressed $SiC_t/Si_3N_4$ ceramic composite was experimentally investigated at $1200^{\circ}C$ and at various stress levels in air. The creep threshold stress for zero creep rate after 100 hr was found to be approximately 60 MPa. The stress exponent was estimated to be n~1, which suggests that fiber-reinforcement reduced the stress sensitivity of the HPSN matrix with the stress exponent of 2. The tertiary stage leading to creep rupture was found at 250 MPa but was very short. The microstructure of the crept specimen showed random fiber fracture and no matrix cracking. Interfacial debonding was absent.

• Ocean Systems Engineering
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• 제2권1호
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• pp.17-31
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• 2012

This study investigated the behavior of a non-isothermal $CO_2$ bubble formed through a leak process from a high-pressure source in a deep sea. Isenthalpic interpretation was employed to predict the state of the bubble just after the leak. Three modes of mass loss from the rising bubble were demonstrated: dissolution induced by mass transfer, condensation by heat transfer and phase separation by pressure decrease. A graphical interpretation of the last mode was provided in the pressure-enthalpy diagram. A threshold pressure (17.12 bar) was identified below which the last mode was no longer present. The second mode was as effective as the first for a bubble formed in deep water, leading to faster mass loss. To the contrary, only the first mode was active for a bubble formed in a shallow region. The third mode was insignificant for all cases.