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HMM-Subnet Connected MLP Hybrid Classifier with GA for Continuous EMG signal Discrimination Purpose
Kwon, Jangwoo 동명정보대학교 1998 東明情報大學校論文集 Vol.1 No.-
본 연구에서는 동적 근전 신호의 효율적 인식을 위한 유전자 알고리즘을 갖는 다층 퍼셉트런과 히든 마르코브 모델의 합성 분류기를 제안한다. 다층 퍼셉트론을 히든 마르코브를 위한 확률 생산기로 사용하는 것 대신에 본연구에서는 유전자 알고리즘을 갖는 다층 퍼셉트론을 근전도 신호의 분류력 향상을 위한 2차 분류기로서의 사용을 제안한다. 유전자 알고리즘은 다층 퍼셉트론의 적절한 초기 가중치를 생성함으로서 학습시간을 단축시키기 위하여 사용되었다. 제안하는 알고리즘은 분류기의 분류력을 향상시키고 근전신호의 동적 특성을 고려하기 위하여 제안되었다. HMM-MLP, HMM-GA-MLP, CPN, HMM-GA-CPN의 네가지의 분류기가 제시되었고 각 분류기의 성능을 실험자의 6가지 움직임을 분류하는데 적용함으로써 비교 검토하였다. 실험 결과 제안된 분류기가 상대적으로 가장 높은 분류율을 보였다.
권장우(Jangwoo Kwon),양해봉(Haebong Yang),이중만(Jungmann Lee) 한국콘텐츠학회 2009 한국콘텐츠학회 종합학술대회 논문집 Vol.7 No.1
본 연구는 기업이 원하는 맞춤형 인재육성과 함께 질적 불일치 해소와 최근 대두되고 있는 무업자 증가 및 청년실업률 완화에 기여할 수를 있기 위해 단순 교육차원의 산학협력이 아닌 고용이라는 실질적 가치창출로 연계되는 한국형 IT인턴쉽 모델 개발과 활성화를 목적으로 하고 있다. IT인턴쉽 시범운영한 참여기업 및 인턴학생에 대해서 실태조사를 한 결과, 재학 중의 인턴쉽 경험이 취업에 도움을 주고 있음을 알 수 있었으며, 현장실습기간이 길수록 취업에 도움의 정도가 커진다고 생각하고 있다. 학력보다는 전공 및 직무위주의 인턴사원을 매칭하고 사전교육의 효과로 신입사원 수준의 업무를 부여하고 수행하여 인턴쉽 내용이 질적으로 상승하게 되었다. 지방학생 채용비율 56%로 지역특화 산업과 연관된 기술 분야의 지방학생에 대한 기업의 선호도가 있는 것으로 나타났으며, 연수기관의 87%가 재참여 희망하였으며, 이중 61% 연수생을 채용 희망의사를 표시하여 고용연계 가능성을 확인 하였다. 또한 연수생들의 68.3%가 인턴 후 중소기업에 대해 긍정적으로 이미지 전환되어 인턴사업이 중소기업에 대한 기존의 부정적 선입견 완화에 기여 하고 있음을 보여 주고 있다. The purpose of this study is to develop New-IT internship and to search for the way to reduce quality mismatch and unemployment ratio and to ultimately enhance its effectiveness of university-industry collaboration(UIC) in the field of information technology in Korea. To achieve the goal of this study, we tried to come up with more job creation than working on educational collaboration between university and industry. The survey based on the reaction of companies and interns participating in IT internship program promoted by MKE(Ministry of Knowledge and Economy) shows that intern experience helped them to get jobs and longer intern period gave them to find job more easily. Intern companies preferred to local college students majoring in special technology area related to regional innovation industry cluster. It also found that intern companies wanted to hire interns who had some project experiences and theoretical knowledges. IT Internship program affected students good images about small and medium enterprises(SME) after finishing internship.
Jangwoo Lee,Giseok Kwon,Wookwang Cheon,Wonhyeon Lim J-INSTITUTE 2020 International Journal of Human & Disaster Vol.5 No.2
Purpose: Driven by the society’s demand arising from global climate change, privately owned forests in South Korea, which make up two thirds of the total forested area of the country, have been playing a pivotal role as sites of forest resource development and major carbon sink. Forest management plans serve as the basic plans for managing privately owned forests. Therefore, it is necessary to compare and check whether the forest manage-ment plans are well-prepared and whether the forestry projects based on the approved plans have been efficiently implemented and managed. This study was conducted to analyze forest owners’ views and demands through surveys, albeit at a regional level, with a view to providing basic data for establishing measures for improving future forestry policy. Such a policy framework for efficient private forest management should be based on efficient preparation of forest man-agement plans and their evaluation through correct methods. Method: Therefore, this study proposes measures for promoting private forest management by conducting survey-based analysis of private forest management plan preparation and the ratio of forestry project implemen-tation with respect to the approval status. Results: To enable a proper prediction of future forest changes and ensure sustainable forest management through the proposed measures, a reliable evaluation of the general issues related to forest project implementa-tion was performed from the perspective of forest owners. Conclusion: The significance of this study lies in proposing measures to promote private forest management, and it is expected to offer opportunities to private forest owners to manage their private forests more efficiently.
김장우(Jangwoo Kim),권민호(Min Ho Kwon),정도관(Do Kwan Chung),주종남(Chong Nam Chu) Korean Society for Precision Engineering 2012 한국정밀공학회지 Vol.29 No.10
Laser beam machining (LBM) using nanosecond pulsed laser is widely known to be rapid and non-wear process for micromachining. However, the quality itself cannot meet the precision standard due to the recast layer and heat affected zone. In this paper, a fabrication method for machining micro features in stainless steel using a hybrid process of LBM using nanosecond pulsed laser and electrochemical etching (ECE) is reported. ECE uses non-contacting method for precise surface machining and selectively removes the recast layer and heat affected zone produced by laser beam in an effective way. Compared to the single LBM process, the hybrid process of LBM and ECE enhanced the quality of the micro features.
Seo, Jangwoo,Kwon, Ji Sun,Choo, Hyunah,Choi, Jae-Wook,Jae, Jungho,Suh, Dong Jin,Kim, Shin,Ha, Jeong-Myeong Elsevier 2019 CHEMICAL ENGINEERING JOURNAL -LAUSANNE- Vol.377 No.-
<P><B>Abstract</B></P> <P>Two-step hydrodeoxygenation of furan trimers using supported Ni catalysts was successfully performed by substituting expensive noble metal catalysts for hydrodeoxygenation, which can contribute to the development of feasible hydrodeoxygenation processes with which to prepare high-carbon-number hydrocarbon fuels. Although more cracking of hydrocarbon products was observed for the Ni catalysts, the substitution of noble metal catalysts with Ni catalysts was successful, leading to good HDO activity. The combination of the first step of Ni/CeO<SUB>2</SUB> (hydrogenation) and the second step of Ni/tungstated zirconia (hydrodeoxygenation) led to complete deoxygenation, achieving 87.8% of the theoretical maximum yield of the oil phase product, which is slightly lower than the value of 91.1% for the combination of the first step of Pd/C (hydrogenation) and Ru/tungstated zirconia (hydrodeoxygenation). The roles of first-step hydrogenation were revealed as the hydrogenation of unsaturated furan rings and the hydrolysis of saturated furan rings.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Two-step hydrodeoxygenation of biomass-derivatives using Ni catalysts produces diesel-like fuels. </LI> <LI> Ni catalysts exhibit a good deoxygenation activity comparable to that of noble metals. </LI> <LI> Saturation and hydrolysis of furan rings occur during the first step hydrogenation. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Content Visualization for BVI Audience Using Image Captioning
Chanrith Poleak,Jangwoo Kwon 한국재활복지공학회 2018 한국재활복지공학회 학술대회논문집 Vol.2018 No.11
Visual contents such as images and videos on media and the Internet are the main source of entertainment for the general public. However, BVI audiences are still struggling to fully enjoy and appreciate those contents that those media provide. for this reason, we propose an Image Captioning model that could automatically provide the description to the content in a natural language form, which can later be used in pair with text-to-speech to assist the BVI audiences.
A System in Package for EPC compatible semi-active RFID sensor tag platform
Hyunju Lee,Jangwoo Kwon,Shiho Kim 대한전자공학회 2009 ITC-CSCC :International Technical Conference on Ci Vol.2009 No.7
A semi-active EPC compatible RFID sensor Tag platform is proposed and fabricated using system in package technology. The platform contains RF interface, MCU core with sensor and actuator interfaces, and thin film battery. It supports not only EPC C1G2 standard but also user defined control or communication protocols required for developing operating mode of semi-active sensor tags. User defined commands can be implemented by programming the MCU.