• Journal of electromagnetic engineering and science
• /
• v.8 no.2
• /
• pp.47-51
• /
• 2008

In this paper, we present a cost effective parallel-branch spiral inductor with the enhanced quality factor and the resonance frequency. This structure is designed to improve the quality factor, but different from other fully stacked spiral inductors. The parallel-branch effect is increased by overlapping the first metal below the second metal with same direction. Measurement result shows an increased quality factor of 12 % improvement. Also, we show an octagonal parallel-branch inductor which reduces the parasitic capacitances for higher frequency applications.

• Journal of Korean Society of Industrial and Systems Engineering
• /
• v.33 no.4
• /
• pp.1-9
• /
• 2010

In this paper, we consider a two-machine re-entrant permutation flowshop scheduling problem with the objective of minimizing total flowtime, and suggest branch and bound algorithms for the scheduling problem. In this scheduling problem, each job must be processed twice on each machine, that is, each job should be processed on the two machines in the order of machine 1, machine 2 and then machine 1 and machine 2. In this research, based on the results of existing researches for re-entrant permutation flowshop scheduling problems, various dominance properties, lower bound and heuristic algorithm are suggested for the problem, and those are used to develop branch and bound algorithms. In the computational experiments for evaluation of the performance of the algorithms, the suggested branch and bound algorithms are tested on randomly generated test problems and results are reported.

• Korean Journal of Veterinary Service
• /
• v.31 no.4
• /
• pp.465-469
• /
• 2008

Unusual yellowish-green intramuscular granulomatous lesions were found in a carcass of Hanwoo(slaughtered, 30 month old). Those were 1-3 mm in diameter, oval shaped, and paralleled with muscle fibers. Histologically, severe inflammation, eosinophilic granulomas and necrosis were observed in the muscle tissue. We also observed sarcocysts in the muscle cells. In a polymerase chain reaction, we identified 900bp length, sarcocystis specific fragment. It would be diagnosed as sarcocystosis in Hanwoo.

• The Transactions of The Korean Institute of Electrical Engineers
• /
• v.58 no.7
• /
• pp.1443-1449
• /
• 2009

This paper presents a profiling model of a wide-window superscalar microprocessor using multiple branch prediction. The key idea is to apply statistical profiling technique to the superscalar microprocessor with a wide instruction window and a multiple branch predictor. The statistical profiling data are used to obtain a synthetical instruction trace, and the consecutive multiple branch prediction rates are utilized for running trace-driven simulation on the synthesized instruction trace. We describe our design and evaluate it with the SPEC 2000 integer benchmarks. Our performance model can achieve accuracy of 8.5 % on the average.

• 대한예방의학회:학술대회논문집
• /
• 2002.10a
• /
• pp.406-408
• /
• 2002

• Korean Journal of Mathematics
• /
• v.20 no.1
• /
• pp.33-46
• /
• 2012

Using the direct method, we prove the Hyers-Ulam stability of the orthogonally additive-quartic functional equation (0.1) $f(2x+y)+f(2x-y)=4f(x+y)+4f(x-y)+10f(x)+14f(-x)-3f(y)-3f(-y)$ for all $x$, $y$ with $x{\perp}y$, in non-Archimedean Banach spaces. Here ${\perp}$ is the orthogonality in the sense of R$\ddot{a}$tz.

• Membrane and Water Treatment
• /
• v.7 no.2
• /
• pp.87-100
• /
• 2016

A numerical simulation of membrane evaporation process was carried out in this work. The aim of simulation is to describe transport of water through porous membranes applicable to the concentration of aqueous solutions. A three-dimensional mathematical model was developed which considers transport phenomena including mass, heat, and momentum transfer in membrane evaporation process. The equations of model were then solved numerically using finite element method. The results of simulation in terms of evaporation flux were compared with experimental data, and confirmed the accuracy of model. Moreover, profile of pressure, concentration, and heat flux were obtained and analyzed. The results revealed that developed 3D model is capable of predicting performance of membrane evaporators in concentration of aqueous solutions.

• The Korean Nurse
• /
• v.20 no.3 s.111
• /
• pp.49-57
• /
• 1981

Current population trends, marked by an increasing accumulation of old members, must be followed by major adjustment in socioeconomic planning since our traditional family structure has been changing as a result of scientific and sociologic advances. Welf

• Proceedings of the KIEE Conference
• /
• 2006.07a
• /
• pp.157-158
• /
• 2006

This paper describes the overvoltage of branch line in underground distribution systems when the direct lightning surge strikes on conductor of overhead line. Distribution systems are very complex because that includes so many branch lines, transformers, switches and so on. Therefor model systems consist of overhead distribution lines, underground cable include branch lines, lightning source and switches. Those are established by EMTP/ATPDraw. Simulation analyzes surge behavior on branch lines considering various conditions in underground distribution systems. Simulation results shoe overvoltage with location in various cases.

• Proceedings of the KIEE Conference
• /
• 2006.11a
• /
• pp.123-125
• /
• 2006

본 논문은 해남-제주간 직류송전설비(HVDC)의운영 중 변환설비 제어에 사용되는 PT전원 상실에 의한 설비 불시 정지의 해결 방안으로 한국전력공사에서 연구 개발 및 운영 중인 고속도 PT자동절체기에 관한 사항이다. 특히, PT전원 상실시 HVDC가 설비 정지되는 것을 예방하기 위해 반도체소자(TRIAC)를 이용한 고속도 PT 자동절체기를 개발하여 설비 신뢰성을 확보한 내용에 대하여 고찰하였다.