• 전자공학회논문지 IE
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• 제47권1호
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• pp.1-5
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• 2010

본 논문은 SOI 저장음 종폭기에서 게이트구조가 핫캐리어에 의한 성능저하에 미치는 영향융 조사하였다. 회로 시뮬레이션은 H-게이트와 T-게이트를 가지는 SOI MOSFET에서 측정된 S-파라미터와 Agilent사의 ADS를 사용하여 스트레스 전후의 H-게이트와 T-게이트 저잡음 증폭기의 성능을 비교하였다. 또한 저잡음 증폭기의 장치 열화와 성능 열화 사이의 관계뿐만 아니라 임피던스 매칭(S11), 잡음 지수와 이득에 관한 저잡음 증폭기의 성능 지수 등을 논의하였다.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2003년도 International Meeting on Information Display
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• pp.288-291
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• 2003

The technology and performance of the world-largest 54-inch LCD TV using PVA mode have been introduced from two points of view: one is to manufacture large-size panels, the other is to improve electro-optical performance required for multimedia applications. Current ongoing research activities that have been explored include new stitching design, one drop filling with column spacer, response time less than one frame rate, color performance and light efficiency enhancement.

• Korean Chemical Engineering Research
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• 제47권6호
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• pp.710-714
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• 2009

본 연구에서는 석탄가스의 환원도와 석탄가스에 함유된 $H_2O/H_2S$ 농도변화에 따른 세 가지 종류의 아연계 탈황제의 반응성능을 회분식 유동층반응기에서 분석하였다. 가스화에서 생성되는 가스의 조성은 환원도가 각각 다른 KRW(Kellogg-Rust-Westinghouse) 공기이용 가스 조성, Shell 산소이용 가스 조성, 고등기술연구원의 가스 조성을 기준으로 모사가스를 이용하여 입구의 $H_2O$와 $H_2S$ 농도를 변화시켜 실험을 수행하였다. $H_2O$의 농도는 5부터 30%까지 $H_2S$의 농도는 0.5에서 2%로 변화시켜 탈황성능을 분석하였다. 실험 결과 $H_2O$의 농도가 증가할수록 탈황성능이 감소하고 입구의 $H_2S$ 농도가 증가할수록 탈황반응기 후단의 $H_2S$ 농도 역시 증가하였다. 모든 조건에서 환원도에 따른 탈황성능 변화는 없었으며 탈황성능은 최저 99.5%로 건식탈황제를 이용하여 99% 이상의 $H_2S$ 제거 성능을 보이는 것을 확인하였다.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2003년도 International Meeting on Information Display
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• pp.664-667
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• 2003

Super In Plane Switching (S-IPS) technology is applied for large TFT-LCD panels used in TV applications. It has a lot of advantages in comparison to the alternative, VA technology. S-IPS shows excellent viewing angle properties and fast response time between intermediate gray levels. If the performance parameters which describe the actual visual performance are considered, S-IPS is much more advantageous.$^{1)}$ However, it shows relatively low contrast ratio in diagonal direction compared to viewing angle characteristic in upper/down direction in S-IPS. In order to compensate the relatively low diagonal contrast ratio, a newly designed optical film was applied and the truly wide view angle of a S-IPS TW(True Wide)-IPS) was achieved. Our newly developed 30-inch TFT-LCD panel reveals TW-IPS that is optimized for TV application

• 유통과학연구
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• 제12권2호
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• pp.39-47
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• 2014

Purpose - The ultimate goal of a franchise system comes from its win-win strategy. Agency theory uses goal incongruity to examine complex contracting problems between buyers and suppliers. Goal incongruity within a contractual relationship can be defined as the agent's desire not to cooperate. It is the degree to which the contractual terms do not satisfy the agent's goals. The greater the goal incongruity between the agent and the contract, the more likely it is that the agent will meet the terms of the contract. Thus, goal incongruity between buyers and suppliers has close relationships with both behavioral and financial performance. This study tries to examine these relationships in the franchise context using a model including related variables, such as regulatory foci, financial performance, and opportunism, to explain the reasons that not all franchisees perform their best. In particular, the study examines the effects of goal incongruity on regulatory focus, and the effects of regulatory focus on performance and opportunism. In short, the objective is to determine goal incongruity's effect on regulatory foci, and the effect of regulatory focus on performance and opportunism. Research design, data, and methodology - This study used data collected from the franchisee managers of 104 franchisors in South Korea. The franchisors include more than 10 franchisees, the majority of whom have been in business for more than five years. The study also surveyed 104 franchisees, matched with their franchisors for the sake of a dyadic approach. The study used regression analysis to test the hypotheses. Results - H1 and H2 predicted that goal incongruity would decrease promotion focus and increase prevention focus. Supporting H1, the result indicates goal incongruity had a positive effect on promotion focus. However, H2 was not supported. Goal incongruity had no significant effect on prevention focus (β = -.375, t = -4.331 and β = -.145, t = -1.950, respectively). H3 and H4 predicted that promotion focus would increase financial performance and decrease opportunism. Supporting these hypotheses, the results indicate that promotion focus had a positive effect on financial performance and a negative effect on opportunism (β = .771, t = 7.899 and β = -.765, t = -6.778, respectively). H5 and H6 predicted that prevention focus would decrease financial performance and increase opportunism. However, the results do not support these hypotheses. The results indicate that prevention focus had no effects on opportunism or financial performance (β = -.130, t = -1.070 and β = .090, t = .641, respectively). Overall, the evidence generally supported the hypotheses. Conclusion - Goal incongruity between a franchisor and a franchisee increases the franchisee's financial performance and opportunism, and the relationship is mediated by promotion focus. Interestingly, however, prevention focus has no mediating effect between goal incongruity and performance. Even though no significant relation exists between goal incongruity and prevention focus, the results have two implications. First, decreasing goal incongruity can improve financial performance and suppress franchisee opportunism. Second, the relationship between goal incongruity and performance affects promotion-focused franchisees.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2003년도 신호처리소사이어티 추계학술대회 논문집
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• pp.99-102
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• 2003

Computing environments of Embedded Systems are different from those of desktop computers so that they have resource constraints such as CPU processing, memory capacity, power, and etc.. Thus, when a desktop S/W is ported into embedded systems, optimization should be seriously considered. In this paper, we investigate several S/W optimization techniques to be considered for porting H.263 encoder into a high performance DSP, TMS320C6711. Through experiments, it is found that optimization techniques employed can make a big performance improvement.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2005년도 추계학술대회 논문집
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• pp.670-673
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• 2005

We designed the compound CVT (Continuously Variable Transmissions) by combining power circulation mode CVT and power split mode CVT, which have been proposed for connecting 2K-H II 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. We proved that the compound CVT had a better performance than either of the power circulation mode or power split mode.

• 청정기술
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• 제25권3호
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• pp.189-197
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• 2019

본 연구에서는 대표 악취물질로 분류되는 황화수소(hydrogen sulfide, $H_2S$)를 처리하기 위해 3원계의 금속이온 물질이 담지된 활성탄의 제조조건 최적화에 대한 연구를 수행하였다. $H_2S$ 흡착성능 증진을 위한 금속이온 물질로는 $H_2S$ 흡착성능 증진 물질인 KI를 기반으로 Li 및 Fe 또는 3원계(K, Li, Fe)로 조합 시 성능 증진을 확인하였으며, 이는 XRD 분석을 통해 각 활성 물질의 $H_2S$와의 반응 또한 결합에 의한 것으로 판단하였다. 흡착제의 열처리시 질소를 이용한 경우 공기에 비교하여 흡착 성능이 약 3배 이상 증가하였다. 최적 흡착제의 최대 흡착량 상수($q_m$)값은 97.07로써 기존 K 기반 첨착활성탄 대비 6배의 흡착성능이 나타났으며, 물질전달속도와 흡착속도 간 평형에 의해 객관적인 흡착량($0.3g\;g^{-1}$ 이상)이 확보됨을 확인하였다. 입자 크기에 따른 흡착제 성능 차이를 확인한 결과, 성능의 구배는 존재하나 시약급 활성탄 입자 크기를 가지는 활성탄의 개질 시에도 성능 증진이 뚜렷함을 확인하였다. 상대습도가 비교적 높은 60, 100%에서도 흡착성능이 존재함을 확인하였으며, 이를 통해 스크러버 후단과 같은 습도가 높은 실 공정에도 적용 가능할 것으로 판단된다.

• 전기전자학회논문지
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• 제14권2호
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• pp.76-81
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• 2010

모바일 CPU의 성능이 향상됨에 따라 전용 하드웨어의 필요성이 줄어 들고 있다. 그러나 아직까지 모바일 CPU의 성능은 한계가 있다. 이러한 제약 조건을 병렬처리와 실수 연산이 뛰어난 GP-GPU(General-Purpose computing on Graphics Processing Units)를 이용함으로써 다른 전용 하드웨어의 추가 없이 성능을 향상 시킬 수 있다. 본 논문에서는 모바일 환경에 적합하게 설계된 GP-GPU를 이용하여 H.264 디코더의 Inverse Quantization, Inverse DCT, Color Space Conversion 모듈을 구현하였다. G-PGPU를 이용한 전체 시스템 동작 시 40%의 성능 향상이 있었다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2003년도 추계학술대회 논문집 전기물성,응용부문
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• pp.252-254
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• 2003

Recently composite insulators are being used for outdoor high voltage applications. Composite insulators for transmission line have significant advantages over porcelain insulators, especially for ultra-high voltage. Their advantages are light weight, vandalism resistance, and hydrophobicity. We developed a 170kV high reliable vertical break disconnector with good long term electrical and mechanical performance which was achieved by the improvement of electrical performance and light weight. We discuss the outline of the development and the product.