• 한국원자력학회:학술대회논문집
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• 한국원자력학회 2005년도 춘계학술발표회
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• pp.415-416
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• 2005

• 한국생물물리학회:학술대회논문집
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• 한국생물물리학회 1999년도 학술발표회 진행표 및 논문초록
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• pp.66-66
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• 1999

The negative chronotropic effect of ACh on heart fades in the continuous presence of ACh, which is known as a phenomenon called "vagal escape". The underlying mechanism of vagal escape is not entirely clear, but desensitization of acetylcholine-activated $K^{＋}$ currents ($K_{ACh}$) was suggested, at least in part, to be responsible.(omitted)d)

• 대한전기학회:학술대회논문집
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• 대한전기학회 2003년도 하계학술대회 논문집 D
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• pp.2775-2777
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• 2003

In this paper we studied the fittest method of effective production line for multifunction welder. So, that can be good productivity. Because this method is simpler than present method and it don't need to change on production line for new product.

• 한국원자력학회:학술대회논문집
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• 한국원자력학회 2005년도 추계학술발표회
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• pp.340-341
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• 2005

• 한국생물물리학회:학술대회논문집
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• 한국생물물리학회 1997년도 학술발표회
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• pp.39-39
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• 1997

Native strain of inhibitory SERPINS (Serine protease inhibitors) is thought to be used in the facile conformational switch to play biological regulation. Many heat stable variants of $\alpha$$_1$-antitrypsin, a prototype of inhibitory serpins, increased their stability by reducing the native strain.(omitted)

• 대한수학회지
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• 제56권5호
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• pp.1247-1263
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• 2019

In ordered trees, two randomly chosen vertices are said to be dependent if one lies under the other. If not, we say that they are independent. We consider several classes of ordered trees with uniform updegree requirements and find the generating functions for the trees with two marked dependent/independent vertices. As a result, we compute the probability for two vertices being dependent/independent. We also count such trees by the distance between two independent vertices.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제10권1호
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• pp.96-116
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• 2016

Sensing coverage is a fundamental issue for Wireless Sensor Networks (WSNs). Several coverage configuration protocols have been developed; most of them presume the availability of precise knowledge about each node location via GPS receivers. However, equipping each sensor node with a GPS is very expensive in terms of both energy and cost. On the other hand, several GPS-less localization algorithms that aim at obtaining nodes locations with a low cost have been proposed. Although their deep correlation, sensing coverage and localization have long been treated separately. In this paper, we analyze, design and evaluate a novel integrated framework providing both localization and coverage guarantees for WSNs. We integrate the well-known Coverage Configuration Protocol CCP with an improved version of the localization algorithm AT-Dist. We enhanced the original specification of AT-Dist in order to guarantee the necessary localization accuracy required by CCP. In our proposed framework, a few number of nodes are assumed to know their exact positions and dynamically vary their transmission ranges. The remaining sensors positions are derived, as accurately as possible, using this little initial location information. All nodes positions (exact and derived) are then used as an input for the coverage module. Extensive simulation results show that, even with a very low anchor density, our proposal reaches the same performance and efficiency as the ideal CCP based on complete and precise knowledge of sensors coordinates.

• 대한한의학회지
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• 제27권1호
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• pp.1-10
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• 2006

Objectives : The combined treatment (CT) with oriental herbal medicine and western biomedical medicine is prevalent in the world including Korea. But the clinical information on frequency, efficacy and safety of CT at lout cerebrovascular attack hat not known thoroughly yet. This study aimed to identify the status and adverse effects of CT for the treatment of stroke patients. Methods : A self-completed questionnaire survey and medical record survey by oriental medical doctors were performed in 20 Korean Oriental medical hospitals. Of the initial 1,000 in-patients through 2-stage sampling method, 883 were participated in this surrey, resulting in a response rate of 88.3%. Results : Among stroke patients, the proportion of CT was 94.1%. 156 respondents (18.8%): were experienced several adverse effects including headache, dizziness (fatigue), diarrhea, constipation, chest discomfort, etc. The severity of these adverse effects was generally mild to moderate. Although they quitted the CT, 9.8% of patients were not relieved from adverse effects. Conclusions : This study suggests that most patients in Korean Oriental medical hospitals used the combined treatment with oriental herbal medicine and western biomedical medicine for management of stroke. Therefore, the medical professionals should provide comprehensive and up-to-date clinical information about potential benefits and risks of CT to the stroke patients.

• 공업화학
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• 제29권2호
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• pp.248-251
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• 2018

고정층 반응기와 파이롤라이저-가스크로마토그래피/질량분석기를 이용하여 커피 잔류물이 함유된 폐종이컵의 열분해 및 촉매 열분해를 진행하였다. 커피 잔류물이 함유된 종이컵의 무촉매 열분해에서는 많은 양의 오일이 가스 및 촤와 함께 형성되었다. HZSM-5와 HY 촉매의 사용에 따른 추가적인 분해 반응에 의해 오일의 양은 줄고 가스의 양은 증가하였다. HZSM-5와 HY의 산촉매 특성 때문에 커피 잔류물이 함유된 종이컵의 촉매 파이롤라이저-가스크로마토그래피/질량분석기 분석은 생성오일 중 방향족 화합물의 선택도를 증가시켰다. HY보다 강한 산세기와 중간 기공을 가진 HZSM-5의 특성으로 인해, HZSM-5상에서 커피 잔류물이 함유된 종이컵을 촉매 열분해한 경우 HY를 사용한 경우보다 휠씬 더 많은 양의 방향족 화합물이 생성되었다.

• 센서학회지
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• 제24권4호
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• pp.228-231
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• 2015

Ultrasonic motors provide high torques and quick responses compared to their magnetic counterparts; therefore, they are widely used in small-scale applications such as mobile phones, microrobots, and auto-focusing modules in digital cameras. To determine the feasibility of lead-free piezoceramics for ultrasonic motor applications, we fabricated a ring-type piezoceramic with a KNN-based lead-free piezoceramic (referred to as CZ5), intended for use in an auto-focusing module of a digital camera. The vibration of the lead-free stator was observed at 45.1 kHz. It is noteworthy that the fully assembled lead-free ultrasonic motor exhibited a revolution speed of 5-7 rpm, even though impedance matching with neighboring components was not considered. This result suggests that the tested KNN-based piezoceramic has great potential for use in ultrasonic motor applications, requiring minimal modifications to existing lead-based systems.