• Journal of electromagnetic engineering and science
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• v.2 no.2
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• pp.75-80
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• 2002

Signal integrity problems and their possible solutions are addressed in this paper for split power plane of high-speed digital systems. Stitching and decoupling capacitors are proved to be very effective for reducing signal noise, ground bounce as well as electromagnetic radiation from the split power plane. Simulations based on 3D-Finite Difference Time Domain (FDTD) method are utilized for the analysis of practical high frequency multi-layered PC main board.

• Proceedings of the KIEE Conference
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• 1999.07e
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• pp.2453-2455
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• 1999

We propose that we use a porous-Si for a new spatial walk-off polarizing material with a large split angle. The beam-split an91e f is determined by the filling factor g(or porosity p) of the columnar dielectric substance and the slant angle $\theta$. Theoretically, by the assuming that $n_2$=3.5, and $n_1$=1 one can predict that a large split angle, up to $27^{\circ}$, is possible if one can construct such films with $Si.^{[3]}$ To accomplish this, we use porous-Si. As a result of theoretical simulation, the best structural parameters for attaining the maximum split angle $\phi$=$27.5^{\circ}$ are $\theta$=$58.7^{\circ}$ and p=57.6%.

• Journal of KIISE:Software and Applications
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• v.32 no.6
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• pp.502-511
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• 2005

In this paper, we propose a hybrid analysis method(HAM) based on gray-intensity information from natural scene images. The HAM is composed of GIA(Gray-intensity Information Analysis) and SMA(Split/Merge Analysis). Our experimental results show that the proposed approach is superior to conventional methods both in simple and complex images.

• Journal of the Korean Institute of Telematics and Electronics D
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• v.35D no.3
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• pp.28-38
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• 1998

In our paper is reported a new 3D(dimensional) trajectory split approach with greatly improved efficiency for the Monte Carlo simulation of the 3D profiles of implanted ionand point defect concentrations in single-crystal silicon. This approach has been successfully implemented in our TRICSI Monte Carlo code. Combined with the previously developed model for damage accumalation in our TRICSI code, this model allows phasically based dynamic simulation of 3D profiles over an subsequent process simulation such as diffusion modeling and simulation. A typical time saving of over 10 timeshas been achieved for 3D simulation. Our method ensures much better region aground the implanted area. For 1-D simulation, the optimized condition for trajectory split has set to 3,000 pseudoparticles with 2 split branches.

• Proceedings of the KIPE Conference
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• 2018.07a
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• pp.9-11
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• 2018

본 논문은 넓은 영전압 스위칭 범위와 고효율을 가지는 Split-Capacitor Dual-Active-Bridge 컨버터를 제안한다. 제안한 컨버터는 기존의 Dual-Active-Bridge의 풀-브릿지 구조를 Split-Capacitor 구조로 변경하여 회로를 개선하였다. 비록 제안한 컨버터는 변압기 전류가 기존의 회로보다 2배만큼 높아지지만 6개 스위치의 정격 전압이 절반으로 줄어들며, 넓은 영전압 스위칭 범위를 가진다. 또한 변압기 전류의 증가로 인해, 기존의 컨버터에 비해 1/4만큼 작은 누설 인덕턴스로 같은 전력을 넘길 수 있다. 추가된 커패시터는 변압기 DC 성분에 의한 포화 문제를 막아주며 두 개의 출력을 가질 수 있도록 한다. 제안한 컨버터의 성능을 검증하기 위해 3-kW의 시제품을 제작하여 실험을 통해 증명하였다.

• Transactions of the Korean Society of Machine Tool Engineers
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• v.14 no.4
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• pp.96-103
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• 2005

We designed the compound CVT(Continuously Variable Transmissions) by combining power circulation mode and power split mode, which have been proposed for connecting 2K-H I differential gear to the V- belt type CVU(Continuously Variable Unit), as an input coupled type. With the designed compound CVT, we carried out theoretical analysis and performance experiments for efficiency, speed ratio, power flow, and power transmission ratio. We proved that the compound CVT had a better performance than either of the power circulation mode or power split mode.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• v.41 no.4
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• pp.203-207
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• 2015

Osteomyelitis is classified into three groups according to its origin: osteomyelitis that originates from the blood supply, osteomyelitis related to bone disease or vascular disease, and osteomyelitis related to a local infection of dental or non-dental origin. The present case involved osteomyelitis related to a local infection of dental origin and was located in the rear area of the lingula of the mandible. We decided to use sagittal split ramus osteotomy to access the osteomyelitis area. Under general anesthesia, we successfully performed surgical sequestrectomy and curettage via sagittal split ramus osteotomy.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.32 no.4
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• pp.223-227
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• 2009

The study presents two measurement split-plot models with a restricted randomization to save cost and time. Split-plot models are used to handle HTCM (Hard To Control Measurement) factors such as high temperature and long-time catalyst control. The models developed are represented by the processes for estimating the measurement precisions, that is, gauge R&R. The study also introduces three-step procedures to indentify resolution, improve R&R reduction, and evaluate the precision effect.

• Advances in concrete construction
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• v.1 no.3
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• pp.215-225
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• 2013

The results of experimental testing of the effect of confined concrete on compressive strength and ductility of concrete beam subjected to pure bending are presented. The effect of different stirrups forms and spacing, as well as different concrete strengths, on beam carrying capacity and ductility were analyzed. Ultimate strength capacity and deflection of concrete beam increase with the decrease in stirrups spacing. Stirrup form has a great effect on the ultimate carrying capacity and ductility of concrete beam. Stirrups which confined the region of concrete in the compression more contribute to greater compression strength of concrete than common stirrups at the perimeter of the entire cross-section of the beam.

• Journal of Software Engineering Society
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• v.25 no.3
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• pp.59-62
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• 2012

We propose a novel metric for quantitatively comparing different clustered results generated from software clustering algorithms. A quantitative evaluation of software clustering helps understanding of architectural changes of software. The concept of split, which has been used for analysis of genetic characters in bio-informatics, is applied in the analysis of software architecture.