• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2007년도 추계학술대회 논문집
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• pp.113-114
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• 2007

Hole mobility characteristics of single surface channel and dual channel Si/SiGe structure are compared, where the former one consists of a relaxed SiGe buffer layer and a tensile strained Si layer on top, and for dual channel structure a compressively strained SiGe layer is inserted between them. Due to the difference of hole mobility enhancement factors of layers between them, hole mobility characteristics with respect to the Si cap thickness shows the opposite tend. Hole mobility increases with thicker Si cap for single channel structure, whereas it decreases with thicker Si cap for dual channel structure.

• 한국전기전자재료학회논문지
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• 제21권1호
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• pp.44-48
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• 2008

Hole mobility characteristics of two representative biaxially strained SiGe/Si structures with high Ge contents are studied, They are single channel ($Si/Si_{1-x}Ge_x/Si$ substrate) and dual channel ($Si/Si_{1-y}Ge_y/Si_{1-x}Ge_x/Si$ substrate), where the former consists of a relaxed SiGe buffer layer with 60 % Ge content and a tensile-strained Si layer on top, and for the latter, a compressively strained SiGe layer is inserted between two layers, Owing to the hole mobility performance between a relaxed SiGe film and a compressive-strained SiGe film in the single channel and the dual channel, the hole mobility behaviors of two structures with respect to the Si cap layer thickness shows the opposite trend, Hole mobility increases with thicker Si cap layer for single channel structure, whereas it decreases with thicker Si cap layer for dual channel. This hole mobility characteristics could be easily explained by a simple capacitance model.

• Hip & pelvis
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• 제35권4호
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• pp.277-280
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• 2023

Dislocation after a total hip arthroplasty occurs in approximately 1% of patients; however, the frequency is much higher after revision surgery. To prevent dislocation, use of a larger femoral head is recommended, and a dual mobility femoral head has been introduced. However, reducing the dual mobility femoral head to the acetabular component is difficult in cases involving contracture in the soft tissue around the joint. A 72-year-old male patient who developed a periprosthetic joint infection underwent two-stage revision surgery using MUTARS^®. Two months after the revision, the hip joint became dislocated and manual reduction was attempted; however, dislocation occurred again. During another revision using a dual mobility bearing, the soft tissue around the hip joint was too tight to reduce. The problem was overcome by first repositioning the dual mobility head into the acetabular socket, followed by assembly of the diaphyseal portion of the implant.

• 대한기계학회논문집B
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• 제28권9호
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• pp.1110-1116
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• 2004

Experimental measurements of laser-induced ion mobility(LIIM) were performed for ethene/air premixed flames operated near the soot inception point. Soot was ionized using a pulsed laser operated at 532 nm. The ionization signal was collected with a tungsten electrode located in the post-flame region. ionization signals were collected using both a single electrode and dual electrode configuration. Prior LIIM studies have focused on the use of a single biased electrode to generate the electric field, with the burner head serving as the path to ground. In many practical combustion systems, a path to ground is not readily available. To apply the LIIM diagnostic to these geometries, a dual electrode geometry must be employed. The influence of electrode configuration, flame equivalence ratio, and flame height on ionization signal detection was determined. The efficacy of the LIIM diagnostic to detect soot inception in the post-flame region of a premixed flame using a dual electrode configuration was investigated. For the different dual electrode configurations tested, the dual parallel electrode geometry was observed to be most sensitive to detect the soot inception point in a premixed flame.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2009년도 추계학술대회 논문집
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• pp.135-135
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• 2009

In this work we compared the electrical characteristic of single gate and dual gate in MIC-TFT. We fabricated p-channel TFTs based on MIC structure. In mobility, dual gate ($61.35cm^2/Vsec$) got a higher value than single gate ($55.96cm^2/Vsec$). In $I_{on}/I_{off}$ dual gate ($6.94{\times}10^6$) got a higher value than single gate ($1.72{\times}10^6$) too. In $I_{off}$, dual gate got a lower value than single gate. Therefore, dual gate is good and less power consumption than single gate.

• 한국막학회:학술대회논문집
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• 한국막학회 1993년도 추계 총회 및 학술발표회
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• pp.13-20
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• 1993

The sorption equilibria and permeation rates for carbon dioxide in such glassy polymer membranes with high glass-transition temperature as polyimide, polyetherimide, polysulfone and polyethersulfone membranes, were measured. The sorption isotherms for these systems can be described well by the dual-mode sorption model, whereas the pressure dependences of the mean permeability coefficients are simulated better by a modified dual-mode mobility model than the conventional dual-mode mobility model in which the Henry's law and Langmuir populations execute four kinds of diffusive movement.

• 한국임상수의학회지
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• 제39권6호
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• pp.390-394
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• 2022

A 6-year-old, 36.5 kg castrated male Golden Retriever presented for revision surgery for left total hip replacement. The patient underwent removal of the cup and head implants due to unmanageable prosthetic hip dislocation, despite revision surgery. On physical examination, the dog showed persistent weight-bearing lameness after exercise of the left hindlimb with mild muscle atrophy. Radiographic examination revealed dorsolateral displacement of the femur with a remnant stem and bony proliferation around the cranial and caudal acetabulum rims. The surgical plan was to apply the dual mobility cup to increase the range of motion and jump distance to correct soft tissue elongation and laxity caused by a prolonged period of craniodorsal dislocation of the femur. The preparation of the acetabulum for cup fixation was performed with a 29-mm reamer, and the 29.5-mm outer shell was fixed with five 2.4-mm cortical screws. The head and medium neck of the dual-mobility system were placed on the cup, and the hip joint was reduced between the neck and stem. The dog exhibited slight weight bearing on a controlled leash walk the day after surgery. The patient was discharged 2 weeks postoperatively without any complications. Six months postoperatively, osseointegration and a well-positioned cup implant were observed, and the dog showed excellent limb function without hip dislocation until 18 months of phone call follow-up.

• 전기전자학회논문지
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• 제26권3호
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• pp.500-505
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• 2022

본 연구에서는 새로운 구조의 dual gate tri-layer split channel 박막트랜지스터를 제작하였다. 전류 구동 능력을 향상시키기 위해 액티브 층의 양쪽에 게이트를 형성하였고 전하이동도를 증가시키기 위하여 액티브 층에서 채널이 형성되는 구간인 첫번째 층과 세번째 층에 전도성이 높은 ITO 층을 배치하였다. 추가적으로 분할 채널을 이용하여 채널의 series 저항을 낮추면서 분할한 채널의 측면에서도 accumulation을 유도하여 전하이동도를 향상시켰다. 기존의 single gate a-ITGZO 박막트랜지스터가 15 cm²/Vs의 전하이동도를 가지는 반면 dual gate tri-layer split channel 박막트랜지스터는 134 cm²/Vs의 높은 전하이동도를 가졌다.

• 한국통신학회논문지
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• 제36권10B호
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• pp.1182-1191
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• 2011

본 논문에서는 망 기반의 IP 이동성 지원 기술인 AIMS 기술을 기반으로 IPv4와 IPv6가 혼재된 망 환경에서 이동 단말에 대한 끊김 없는 이동성을 지원하는 AIMS-DS 기술을 제안하였다. 제안된 AIMS-DS 기술은 IPv4와 IPv6 프로토콜을 모두 지원하는 듀얼스택 단말에 대하여 IPv4와 IPv6 홈 주소들에 대한 이동성 지원 방안을 제안함으로써, IPv4와 IPv6가 혼재되어 공존하는 과도기적인 망 환경에서 양단간 끊김 없는 이동성 서비스를 제공할 수 있다. 본 논문에서는 액세스 망과 코어 망의 IP 버전에 따른 4가지 경우에 대하여 양단간 패킷 전달 지연 시간과 핸드오버 지연시간에 대하여 AIMS-DS에 대한 성능 분석을 수행하였다.

• 대한전자공학회논문지TC
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• 제44권12호
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• pp.54-62
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• 2007

Mobile IPv6는 이동 단말의 이동성을 제공하기 위해 개발된 대표적인 핸드오버 프로토콜 표준이지만, 핸드오버를 수행함에 있어서 Mobile IPv6는 긴 핸드오버 지연 시간, 높은 패킷 손실률 등의 문제점을 갖는다. 이를 보완하기 위하여 지금까지 여러가지의 프로토콜이 제안되어 보다 고속의 핸드오버를 지원할 수 있지만, 여전히 핸드오버 구간에서 필연적인 패킷의 손실이 발생하는 문제가 있다. 본 논문에서는 계층2에서 단말 이동성을 제공하는 셀룰러 이더넷 시스템의 이동성 지원 기능을 향상시키기 위하여, 단말의 미시적 핸드오버 수행 시의 패킷 손실률을 최소화시킬 수 있도록 이중 링크를 가진 이동 단말의 핸드오버 절차를 제안하였다. 또한 모의실험을 통하여 제안된 시스템의 미시적 핸드오버 수행 시의 패킷 손실률 및 핸드오버 지연, 처리율을 IP 계층의 대표적인 미시적 핸드오버 프로토콜인 Hierarchical Mobile IPv6와 비교 분석하여 세안된 방식의 우수성을 도출하였다.