• East Asian mathematical journal
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• 제26권3호
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• pp.429-440
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• 2010

In this paper, we study a new one-step iterative scheme with error for approximating common fixed points of non-self asymptotically nonexpansive in the intermediate sense mappings in uniformly convex Banach spaces. Also we have proved weak and strong convergence theorems for above said scheme. The results obtained in this paper extend and improve the recent ones, announced by Zhou et al. [27] and many others.

• 한국추진공학회:학술대회논문집
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• 한국추진공학회 2001년도 제17회 학술발표회 논문초록집
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• pp.50-53
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• 2001

Flame propagation during the initial stages of ignition in a non-premixed swirl, having some of characteristics of the primary zone of an aero gas turbine combustor, has been investigated. Nd:YAG laser was adopted as the principal ignition source to allow arbitrary placing of the ignition site i subsequent flame development was monitored using a natural light high speed filming technique for many ignition site at two different swirl ratios and an overall equivalence ratio of 0.9. For ignition offset from the burner centreline, buoyancy force associated with radial pressure gradient produced a strong inward movement of the flame kernel. At the burner exit. flame kernels invariably developed into cylindrical form and a 'radial confinement /axia expansion' (RCAE) process was observed.

• 천문학회보
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• 제38권1호
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• pp.47.2-47.2
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• 2013

We have performed a set of high-resolution simulations of nuclear star-forming ring that results in an inward gas migration from the galactic disk. Our simulations consider gas heating/cooling, star formation, and supernova feedback. The galactic potential was obtained from a snapshot of a 6.3 million particle simulation of a galactic disk at 1 Gyr, which manifests spiral arms and pseudo-bulge. The potential was modeled with a combination of 3-dimensional spherical (for the pseudo-bulge) and 2-dimensional cylindrical (for the disk) multipole expansion technique. With such a potential model, one can easily set up various realistic 3-dimensional potential models by slightly changing the expansion coefficients. We have performed a set of simulations with a few million gas particles covering the central ~6 kpc of the disk for different pseudo-bulge sizes and non-axisymmetry, and we report the dependence of the gas inflow rate, size of the star-forming ring, and star-formation rate in the ring on the size and strength of the non-axisymmetry in the bulge.

• 한국생물물리학회:학술대회논문집
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• 한국생물물리학회 1997년도 학술발표회
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• pp.31-31
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• 1997

Rapidly activating delayed K current (IKr) in cardiac muscles plays an important in repolarization. Expression of HERG cloned by the study on inherited LQT revealed that it encodes a potassium channel with biophysical properties similar to those of IKr in cardiac myocytes： outward currents activating on depolarization with large tail currents on repolarization, implying the inward rectifying property.(omitted)

• 국제지역연구
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• 제15권3호
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• pp.29-53
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• 2011

본 논문은 거시경제와 산업별 차원에서 수입과 해외직접투자가 EU 신규회원국의 기술이전에 미치는 영향을 분석하였다. 본 논문에서는 해외직접투자 유치국의 해외기술을 받아들일 수 있는 능력과 활용할 수 있는 능력을 측정하기 위해 "효과적인 흡입지수"(Effective Absorption Index)라는 새로운 지수를 만들어 해외직접투자 유치국의 해외기술 활용도를 추정하였다. 1998년-2009년 기간 동안 12개국의 해외투자국과 10개국의 해외투자 유치국의 자료를 이용한 거시경제적 차원의 연구결과를 보면, 국내 연구개발로 인한 EU 신규회원국의 총요소생산성 증가보다는 외국 연구개발(R&D)의 기술전파효과(technical spillovers)가 더 컸던 것으로 분석되었다. 해외직접투자보다 수입이 기술전파효과에 더 중요한 역할을 하는 것으로 드러났다. 쌍무적 기술전파효과의 경우, 독일이 EU의 신흥국에 대한 기술이전에 가장 중요한 역할을 한 것으로 드러났다. 국내 R&D보다 해외 R&D의 기술이전효과가 총요소생산성 증가에 더 많은 기여를 한 것으로 분석되었다. 산업별 차원의 연구를 위해 1998년-2009년 기간에 10개국의 해외투자국과 6개국 해외투자 유치국의 17개 산업별 자료를 이용한 연구결과를 보면, 기술이전의 유형이 국가별로 다르지만 고기술산업에서 기술전파효과가 총요소생산성 증가에 크게 기여하는 것으로 나타났다.

• 대한의용생체공학회:의공학회지
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• 제43권1호
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• pp.19-26
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• 2022

The Comprehensive in vitro Proarrhythmic Assay(CiPA) project was launched for solving the hERG assay problem of being classified as high-risk groups even though they are low-risk drugs due to their high sensitivity. CiPA presented a protocol to predict drug toxicity using physiological data calculated based on the in-silico model. in this study, features calculated through the in-silico model are analyzed for correlation of changing action potential in the near future, and features are verified through predictive performance according to drug datasets. Using the O'Hara Rudy model modified by Dutta et al., Pearson correlation analysis was performed between 13 features(dVm/dtmax, APpeak, APresting, APD90, APD50, APDtri, Ca_peak, Ca_resting, CaD90, CaD50, CaDtri, qNet, qInward) calculated at 100 pacing, and between dVm/d_{tmax_repol} calculated at 1,000 pacing, and linear regression analysis was performed on each of the 12 training drugs, 16 verification drugs, and 28 drugs. Indicators showing high coefficient of determination(R²) in the training drug dataset were qNet 0.93, AP resting 0.83, APDtri 0.78, Ca resting 0.76, dVm/dt_max 0.63, and APD90 0.61. The indicators showing high determinants in the validated drug dataset were APDtri 0.94, APD90 0.92, APD50 0.85, CaD50 0.84, qNet 0.76, and CaD90 0.64. Indicators with high coefficients of determination for all 28 drugs are qNet 0.78, APD90 0.74, and qInward 0.59. The indicators vary in predictive performance depending on the drug dataset, and qNet showed the same high performance of 0.7 or more on the training drug dataset, the verified drug dataset, and the entire drug dataset.

• 기술혁신연구
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• 제9권1호
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• pp.121-147
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• 2001

This paper analyzed the R&D activities of foreign companies in Korea. A survey was conducted using questionnaires along with the field interviews. The survey results show that some foreign companies in Korea actively carry out R&D indicating that Korea is becoming a R&D location for the multinational companies. It also shows the wide differences by industries, corporate size, foreign equity ratio, and home country of mother companies. It is suggested that Korean government should utilize the inward foreign direct investment to strengthen the national innovation system of Korea. Various policy measures were recommended to encourage foreign companies to have easier access to domestic R&D resources, carry out R&D activities, and interact with domestic R&D actors. It is also argued that it is necessary to eliminate negative environmental barriers perceived by foreign companies.

• 한국건축시공학회지
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• 제18권2호
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• pp.185-193
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• 2018

In this study, using Granulated Blast Furnace Slag (GBFS), an industrial byproduct, and Phosphogypsum (PG), and Waste Lime (WL) as activator, non-sintering binder (NSB) which does not require a sintering process was produced, and the chemical penetration resistance was evaluated through a seawater resistance experiment. The result of the experiment showed that the inside of NSB mortar saw almost no influence from the ions in seawater due to its dense structure. Also, as it appears that only the surface reacts with ions in seawater while spreading inward is suppressed, the high seawater resistance of NSB could be confirmed.

• 한국공작기계학회:학술대회논문집
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• 한국공작기계학회 2002년도 춘계학술대회 논문집
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• pp.179-183
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• 2002

This paper presents a new approach to the calibration of a SCARA robot orientation with a camera modeling that accounts for major sources of camera distortion, namely, radial, decentering, and thin prism distortion. radial distortion causes an inward or outward displacement of a given Image point from its ideal location. Actual optical systems are subject to various degrees of decentering, that is, the optical centers of lens elements are not strictly collinear. Thin prism distortion arises from imperfection in lens design and manufacturing as well as camera assembly It is our purpose to develop the vision system for the pattern recognition and the automatic test of parts and to apply the line of manufacturing.

• 한국공작기계학회:학술대회논문집
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• 한국공작기계학회 1997년도 추계학술대회 논문집
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• pp.225-229
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• 1997

This paper describes the camera calibration based-neural network with a camera modeling that accounts for major sources of camera distortion, namely, radial, decentering, and thin prism distortion. Radial distortion causes and inward or outward displacement of a given image point from its ideal location. Actual optical systems are subject to various degrees of decentering, that is, the optical centers of lens elements are not strictly collinear. Thin prism distortion arises from imperfection in lens design and manufacturing as well as camera assembly. It is our purpose to develop the vision system for the pattern recognition and the automatic test of parts and to apply the line of manufacturing. The performance of proposed camera calibration is illustrated by simulation and experiment.