• 한국지능시스템학회:학술대회논문집
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• 한국퍼지및지능시스템학회 1993년도 Fifth International Fuzzy Systems Association World Congress 93
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• pp.993-996
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• 1993

This paper addresses the structure and its associated learning algorithms of a feedforward multi-layered connectionist network, which has distributed learning abilities, for realizing the basic elements and functions of a traditional fuzzy logic controller. The proposed neural-network-based fuzzy logic control system (NN-FLCS) can be contrasted with the traditional fuzzy logic control system in their network structure and learning ability. An on-line supervised structure/parameter learning algorithm dynamic learning algorithm can find proper fuzzy logic rules, membership functions, and the size of output fuzzy partitions simultaneously. Next, a Reinforcement Neural-Network-Based Fuzzy Logic Control System (RNN-FLCS) is proposed which consists of two closely integrated Neural-Network-Based Fuzzy Logic Controllers (NN-FLCS) for solving various reinforcement learning problems in fuzzy logic systems. One NN-FLC functions as a fuzzy predictor and the other as a fuzzy controller. As ociated with the proposed RNN-FLCS is the reinforcement structure/parameter learning algorithm which dynamically determines the proper network size, connections, and parameters of the RNN-FLCS through an external reinforcement signal. Furthermore, learning can proceed even in the period without any external reinforcement feedback.

• International Journal of Quality Innovation
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• 제6권1호
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• pp.58-73
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• 2005

The objective of this study is to evaluate the equipment risk before and after SEMI S2-93A implementation, thus providing a guideline for safety improvement. Semiconductor Plant A located in Taiwan's Hsinchu Science Based Industrial Park with 147 manufacturing machines was used for risk assessment. This study was carried out in three steps. First, a preliminary hazard analysis was conducted. A detailed process safety evaluation was conducted (Hazard and Operability Study, HAZOP); and finally, the equipment risk comparison before and after Semiconductor Equipment Manufacturing Instruction (SEMI S2-93A) implementation. The preliminary hazard analysis results showed high risk in 21.77% of the manufacturing machines under risk assessment at Plant A. The largest percentage existed in the Diffusion Department. The machine types specified by the hazardous work site review and inspection according to Article 26 of Labor Inspection Regulation (the machines that use such chemicals as, $SiH_4$, HF, HCL, etc. and that are determined to be highly hazardous through preliminary hazard analysis) were added to the detailed process analysis and evaluation. In the third part of this evaluation, the machines at Plant A used for detailed process safety assessment were divided into two groups based on the manufacturing data before and after 1993. The severity, possibility, and actual accident analysis before and after SEMI S2-93A implementation were compared. The Semiconductor Equipment Manufacturing Instruction (SEMI S2-93A) implementation can reduce the severity and possibility of hazard occurrence.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2006년도 Proceedings of ISRS 2006 PORSEC Volume II
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• pp.756-759
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• 2006

The ocean tide loading (OTL) is an important factor for the GPS positioning, especially in the height direction. The shorter of the distance to the ocean, the larger of the error by the OTL. The influence will be changed when we measure in different place and the order of magnitude is from few centimeters to ten centimeters. In this study, more than ten kinds of the OTL models were collected and applied on the GPS static relative positioning in Taiwan. The GPS observations including five stations were obtained from Nov. 9, 2004 to Feb. 23, 2005 and we used the Bernese GPS software to execute the data processing. In this period, the average amplitudes of the 3-D coordinates are as follows: N is 0.4 cm, E is 0.7 cm, h is 1.8 cm at Kinmen station; N is 0.7 cm, E is 1.3 cm, h is 2.3 cm at Lanyu station; N is 0.5 cm, E is 0.7 cm, h is 2.0 cm at Matsu station; N is 0.6 cm, E is 0.6 cm, h is 2.0 cm at Penghu station and N is 0.5 cm, E is 1.2 cm, h is 1.7 cm at Hsinchu station. Moreover, we will analyze the advantage and disadvantage of every kind of the OTL models in different environments to offer some information to the GPS users and enhance the precision of the GPS positioning.

• 기술혁신학회지
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• 제11권4호
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• pp.565-591
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• 2008

산업혁신체제론과 공급체인분석을 분석방법론으로 하는 본 연구는 대만과의 비교 관점에서 국내 IT SoC산업의 혁신체제 발전방안을 분석했다. 대만 IT SoC산업은 정부의 국내기업 육성정책하에서 신죽과학산업단지의 조성 이후 급속한 성장을 했다. 대만 IT SoC산업의 공급체인 내에서 파운드리업체와 팹리스업체 간 장기적인 협력네트워트는 양자의 동반 성장을 이끌고 있다. 이를 토대로 해서 대만 IT SoC산업은 다양성 창조와 선택의 과정을 거쳐, 공진화의 가능성을 열어놓고 있다. 반면 국내 IT SoC산업은 공급체인 내에서 팹리스업체와 파운드리업체 간 협력네트워크가 구축되지 않은 가운데, 최근 팹리스업체와 시스템업체 간 협력네트워크도 붕괴되고 있기 때문에 공진화의 가능성은 제약되어 있다. 이를 시스템 실패의 관점에서 보면, 국내 IT SoC산업은 행위자들의 협력 부족으로 보완적 자산이 활용되지 않고 상호보완적 학습이 저지되는 상호작용 실패가 나타나고 있음을 의미한다. IT SoC산업에서는 공급체인의 효율화가 경쟁력의 핵심이기 때문에 상호작용 실패를 보정하는 것이 국내 IT SoC산업의 핵심과제로 제기되고 있다. 국내 현실을 고려해 볼 때, 파운드리업체들의 경쟁력이 워낙 취약하기 때문에 팹리스업체와 파운드리업체 간 협력 네트워크 구축은 상당기간 불가능할 것이다. 그러므로 상호작용 실패의 보정은 팹리스업체와 시스템업체 간 협력네트워크의 강화에 초점을 맞추어야 한다. 이를 위한 구체적인 방안으로서 공동개발의 확대, 가교 조직의 활성화, 지분참여의 세 가지가 제시될 수 있다.