실험계획법을 이용한 STS301L 이음재의 GMA 용접 자동화에 관한 연구

백승엽,손일선,Baek, Seung-Yeb,Sohn, Il-Seon 대한용접접합학회 2010 대한용접·접합학회지 Vol.28 No.4

Stainless steel sheets are widely used as the structural material for the railroad cars and the commercial vehicles. These kinds structures used stainless steel sheets are commonly fabricated by using the GMAW (gas metal arc welding). For fatigue design of GMA welded joints such as fillet and plug, ring type joint, it is important to obtain optimum design factor information on GMA welded joints. in this paper, analysis approach for fatigue test using design of experiment are evaluated optimum factor in GMA welded joint type and geometrical parameters of materials. Using these results, that factors applied to fundamental information for fatigue design.

Highly Porous Oxime-functionalized Lyocell-based Cellulose Droplets and Their Filter Applications

백승엽,박수영 한국고분자학회 2020 한국고분자학회 학술대회 연구논문 초록집 Vol.45 No.2

이른바 ‘민식이 법’ 의 위헌성 여부 및 입법권자의 책임에 관한 연구 - 「특정범죄 가중처벌 등에 관한 법률」개정 법률을 중심으로 -

백승엽 한국경찰연구학회 2021 한국경찰연구 Vol.20 No.2

어린이 보호구역에서만이라도 어린이 교통사고 피해를 최대한 감소시키겠다는 취지하에 입법권자인 국회가 「특정범죄 가중처벌 등에 관한 법률」제5조의 13을 신설 하였다.「헌법」제40조에 의거 입법권은 국회의 고유 권한이고, 원칙적으로 ‘입법 형성 의 자유’가 있다. 그러나「헌법」제10조 및 제11조에 의거 그러한 ‘입법형성의 자유’는 무제한 허용되지 않는다. 만일 국회가 ‘정의와 형평’에 위반하는 내용의 입법을 한다면 그것은 국민의 본질적 기본권을 침해하여 ‘위헌적’이기 때문이다. 이 경우 국회는 자신의 ‘법률 개선 의무’를 스스로 이행해야 할 책임이 있다. 이른바 ‘민식이 법’ 중 하나인「특정범죄 가중처벌 등에 관한 법률」제5조의 13은 2019년 9월 11일 민식 군의 교통사고 사망사건 이후 나타난 사회적 분위기에 휩쓸려 입법권자인 국회가 충분한 심의와 토론 없이 만들어낸 ‘졸속·과잉 입법’이라는 비판이 많다. 또한 「헌법」상 ‘책임원칙’, ‘비례원칙’, ‘평등원칙’ 및 ‘체계 정당성 원리’와 ‘과잉금지 원칙’ 에 위반되어 결과적으로 ‘위헌’의 가능성이 높은 것으로 보인다. 따라서 국회는 향후 선의의 피해자가 발생하지 않도록 조속한 시일 내 ‘교통사고’의 본질적인 특성과「헌법」의 근본 취지에 맞게 동법을 개정할 것을 제안한다. Article 5-13 of the Act on the Aggravated Punishment, etc of Specific Crimes was established by the National Assembly, which is a legislative authority, with the aim of reducing the damage of traffic accidents in child protection zones as much as possible. Under Article 40 of the Constitution, legislative power is the unique authority of the National Assembly and in principle, there is the ‘Freedom of Formation of Legislation’. However, Articles 10 and 11 of the Constitution do not permit an unlimited access to such 'freedom of legislation'. If the National Assembly legislates in violation of ‘justice and equity’, it is ‘unconstitutional’ in violation of the fundamental rights of the people. In this case, the National Assembly is responsible for fulfilling its ‘duty to revamp laws’ on its own. Article 5-13 of the Act on the Aggravated Punishment, etc of Specific Crimes, one of the so-called ‘Minsik’s Law’, is criticized as a ‘rough-and-ready and excessive legislation’ without sufficient deliberations and debates since the National Assembly was swept away by the social atmosphere that appeared after the death of Minsik on September 11, 2019. In addition, it seems to be unconstitutional as a result of violating the ‘principle of responsibility’, ‘principle of proportionality’, ‘principle of equality’, ‘principle of justification of system’ and ‘principle of prohibition of excessiveness’. Therefore, it is proposed that the National Assembly revise the Act to suit the general characteristics of traffic accidents and the fundamental purpose of the Constitution as soon as possible so that there will be no innocent victims in the future.

사용자의 라이프 사이클에 따른 가변적 주거계획 연구 - 신혼가구를 중심으로

백승엽,정재희 국제차세대융합기술학회 2019 차세대융합기술학회논문지 Vol.3 No.3

본 연구는 신혼가구를 중심으로 라이프 사이클에 따른 가변적 주거공간을 제안하는 것을 목적으로 한다. 최근 신혼가구의 주거문제가 대두되고 있으며, 가족 구성원의 변화에 따라 주거 이동을 하고 있는 신혼가구의 수가 많아 지고 있다. 하지만 신혼가구의 니즈를 반영하여 라이프 사이클에 따른 주거계획에 대한 연구는 미흡한 실정이다. 이러한 신혼가구의 주거만족도를높이기 위해, 신혼가구의 라이프 사이클에따른가변적주거계획 연구가 필요하다. 이에 본 연구는 문헌조사와 선행연구 분석을 통해 신혼가구의 라이프 사이클을 고려한 주거계획 요소와 가변적 주거계획 요소를 도출한다. 그리고 설문조사를 통해 신혼가구 주거계획요소에 대한 선호도를 분석한 후 신혼가구의 라이프 사이클에 따른 가변적 주거공간을 제안함으로써 지속가능한 신혼가구의 주거환경 계 획을 위한 연구의 기초자료로 활용하는데 그 목적을 두고 있다. This study aims to propose flexible residential plans according to the life cycle of newlywed households. Recently, the problems with the residential of newlywed households' have emerged, and the numbers of newlywed households who are moving their houses according to the change of family members are increasing. However, researches on the residential planning according to the life cycle are insufficient, reflecting the needs of newlywed households. In order to increase the satisfaction of newlywed households, it is necessary to study the flexible residential their life cycle. Therefore, this study, through theoretical research and literature review, derives the residential planning factors considering the life cycle of newlywed households and the flexibility. Then a user survey is conducted regarding newlywed households' preference. In conclusion, this study proposes prototypes for the flexible residential planning according to the life cycle of newlyweds households. Through this research, it is expected that this study will be used as a basic data for sustainable living environment for newlywed households.

프레스 금형을 이용한 석재판 고정장치 개발

백승엽,김선용,Baek, Seung-Yub,Kim, Sun-Young 한국금형공학회 2008 한국금형공학회지 Vol.2 No.4

The productive products are required diversification of product development and advanced for competitiveness. A lot of methods to fix architecture wrapping panels and stone materials are developed in domestic area very much. In this paper, it is very important that a fixing device of slate and molds were developed to reduce the production cost and improve safety. Therefore new model was suggested to reduce manufacturing cost and structure design and FEM analysis were performed to manufacture die press dies for mass production.

랜드스케이프의 개념에 기초한 대학생의 여가 문화 복합시설 계획안

백승엽,이정원,이정수 대한건축학회지회연합회 2013 대한건축학회지회연합회 학술발표대회논문집 Vol.2013 No.1

용탕단조시 Al - Si 합금의 거시편석과 미세조직에 대한 제조변수의 영향

백승엽,조인성,홍준표 대한금속재료학회 1996 대한금속재료학회 학술대회 개요집 Vol.1996 No.0

한국인 치주 감염 환자에서의 Prevotella intermedia와 Prevotella nigrescens의 발현빈도

백승엽,구영,류인철,함병도,한수부,최상묵,정종평,Peck, Seung-Yup,Ku, Young,Rhyu, In-Cheol,Hahm, Byung-Do,Han, Soo-Boo,Choi, Sang-Mook,Chung, Chong-Pyoung 대한치주과학회 2000 Journal of Periodontal & Implant Science Vol.30 No.2

Prevotella intermedia has been implicated as a potent pathogen in many kinds of periodontal, pulpal and periapical diseases. However, it has been isolated from periodontally healthy adults and from edentulous children as well. The intraspecies heterogeneity of Prevotella intermedia has been demonstrated in early studies and finally Shah & Gharbia confirmed the existence of 2 DNA homology groups and proposed dividing Prevotella intermedia into 2 species, Prevotella intermedia and Prevotella nigrescens. This study was designed to examine the frequency of Prevotella intermedia and Prevotella nigrescens in diseased periodontal pockets and healthy gingival sulcus of Korean people by PCR based on 16s ribosomal DNA sequence. One hundred adults who had adult periodontitis but not taken any periodontal treatment or antibiotics during previous 6 months and 50 adults who had healthy periodontal tissue were selected for this study. The sulcular fluid was collected into VMGA by sterilized paper point and diluted to 1,000 times in anaerobic chamber. $100{\mu}{\ell}$ of sample was cultured in $37^{\circ}C$ for 10 days. Among the bacterial colonies, BPB were selected and cultured in BHI broth and then Prevotella intermedia was identified through Gram staining and biochemical test. Identified Prevotella intermedia was cultured again and centrifuged. DNA was extracted from the pellet using several reagents. PCR was performed by previously designed primer. The results were followed. 1. BPB were isolated from 39 of 100 samples of diseased periodontal pockets(39%). 2. Prevotella intermedia was identified from 24 of 39 BPB samples. 3. Among 24 Prevotella intermedia, 21 were confirmed as Prevotella inter - media(87.5) and 2 were confirmed as Prevotella nigrescens(8.33%). 4. BPB were isolated from 9 of 50 samples of periodontally healthy patients. Among them only two were identified as Prevotella intermedia, that is, one was confirmed as Prevotella intermedia and the other was Prevotella nigrescens.

e-Learning의 학습사례를 통한 Blended-Learning 학습적용 도구에 관한 디자인개념 제안 연구

백승엽,정주현 한국기초조형학회 2007 기초조형학연구 Vol.8 No.1

Modern society is a knowledge and information society where knowledge workers and knowledge technologists are educated for the next society and the education of these workers plays a very important role in modern education. The purpose of computerized education is to develop creative and autonomic human resources. With the development of Information Communication Technology(ICT), the time, place, and method of education have been revolutionized. In recent years, the need for the adoption of Blended-Learning(B-L), which can maximize the value of congregated education while supplementing community activity that is lacked in the traditional face to face classroom education, has emerged in the e-Learning field. And this study focuses on application of B-L as a learning tool. Firstly, this study examines the trend of educational theories, the software like system, by reviewing the concept of B-L, constructivist learning as a new educational paradigm, and andragogy. Secondly, the possibility of using B-L models as learning application tools is examined by analyzing the concept of computing, the hardware like system, and B-L model cases through the analysis of the learning tools according to educational system and B-L model in the ubiquitous environment. Thirdly, the scope of this study is to extract the base of design scenario, a step prior to visualization by adopting Scenario-Based-Design for the design approach and development. This study is meaningful because it provides the base for the integration of the suggestions that have been made intermittently. 현대 사회는 다음사회의 핵심인력이 되는 지식근로자층 또는 지식기술자를 양성하는 교육정보화의 사회이며 그 역할은 현대 교육의 중요한 역할을 차지하고 있다. 창의적인 사고를 가지고 자율적인 능력을 지닌 인적 자원을 개발하는 것에 그 목적이 있는 교육정보화는 ICT(Information Communication Technology)발달로 인해 교육의 시간, 장소, 방법 등에 일대 혁신을 가져오고 있다. 이러한 교육방법에 있어 최근 e-Learning 분야에서는 전통적인 면대면 교실에서 부족한 커뮤니티 활동을 보완해 주면서, 동시에 그것이 가지고 있는 집합식 교육의 유용성을 함께 활용함으로써 학습의 효과를 극대화 할 수 있는 Blended-Learning(이하 B-L로 사용함) 전략 도입의 필요성이 강하게 대두됨에 따라, 그에 따른 학습적용도구에 관한 연구를 다음과 같이 진행하였다.첫째, B-L에 대한 개념과 새로운 교육 페러다임으로서의 구성주의 학습과 자기 주도적 학습 그리고 엔드라고지론을 살펴봄으로 소프트웨어적 체계인 교육이론의 흐름을 고찰하였다.둘째, 유비쿼터스 환경에서의 교육시스템 및 B-L 학습모형에 따른 학습도구를 분석함으로써 하드웨어적 체계인 컴퓨팅의 개념과 국내외 B-L 학습모형 사례를 분석하여 앞으로 제안하게 될 학습적용도구에 관한 가능성에 대하여 접근하였다.셋째, 디자인 접근방향과 전개를 위해 시나리오 기반 디자인(Scenario-Based-Design) 방법을 채택하여 디자인의 시각화의 전 단계인 디자인 시나리오 기반 도출을 제안하는 것 까지 이번 연구의 범위로 본 연구는 그동안 산발적으로 제안되어 왔던 다음과 같은 연구를 통합할 수 있는 근거를 마련하는데 본 연구의 의의를 둔다.

실험계획법을 이용한 가스용접 이음재 피로설계를 위한 최적파라메타 연구

백승엽,오선 한국기계기술학회 2010 한국기계기술학회지 Vol.12 No.1