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平面 骨組 構造의 彈塑性 解析에 관한 考察 : S.A.Saafan의 式을 中心으로
朴正南 조선대학교 국토개발연구소 1981 국토개발연구 Vol.3 No.1
This paper is a study on the elastic-plastic analysis of the plane frame structure. In this paper, in case an initial deformation is supposed as a sine wave of half wave on the basis of saasfan's formula, the basic formula of transformation rules related to elastic end member and yield end member is derived. And in case of considering yield interrelation between bending and axial force, the elastic-plastic interpretation through the direct method for upper and lower bound procedures is studied by using the non-linear relation ship between the end action increment and the plastic deformation increment for yield section. The results of this study are as follows: 1. In lower bound procedures, low load-carrying capacity is given, and it is all right to have a small amount of movement load in lower bound procedures and a small increment load in upper bound procedures. 2. The in fluence by initial deflection of members appears as the initial stage of the failure process. 3. In case bending moments or axial forces are overwhelming, whether the yield interrelation between bending and axial force are considered or not, there is just a little difference. 4. In the case of considering finite displacement, low load-carrying capacity appears lower compaced with the opposite case.
박정남,이종혁 경성대학교 공학기술연구소 2003 공학기술연구지 Vol.S2 No.1
With the development of modern communication and networking technology, more and more computing and communication facilities, automation equipments, home information appliances and difference type of networking terminals come into home all over the world. Household appliances and lots of machineries in house accordingly demand remote control for life convenience. In this paper, We suggested voice interface for home automation system. The voice interface consist of voice instruction management module and voice instruction insertion module. In the voice instruction insertion module, a user who use home automation system can edit any instruction directly. Using the voice instruction management module, the home automation system enables household appliances to control by voice instruction. Voice interface for home automation system facilitates not only to show TV, moving image, DVD, but also to replay music files. And what's more about the system is that it enables electrical appliances to control through TCP/IP or RS232C, being connected with the network.
박정남,박정훈,홍성훈,박상선,서강면,강문성 청주대학교 산업과학연구소 1997 産業科學硏究 Vol.15 No.2
This paper describes the implementation of a fuzzy temperature control system to control the water temperature in plant. This system consisted of mainly three parts; sensing part, control part that includes a control algorithm introduced the fuzzy theory, and actuating part. The control algorithms of control part are utilized a look-up table method and firmware technique using one-chip microprocessor(89C52). For evaluating the performance of a fuzzy control system, the experiment results of a fuzzy controller are compared with these of a conventional PID controller which provides an auto-tuning function. The experiment results show that the proposed controller has a good control performance and is robust to external disturbance.
공공기술의 산업계 파급을 위한 기술마케팅 시스템 연구 - 특허정보를 중심으로
박정남,금영섭,남택일,최강모 한국지식재산연구원 2012 지식재산연구 Vol.7 No.3
Since 2000, technology transfer and commercialization base was constructed by A Promotion Strategy of Technology Transfer and Commercialization plan of the Korean government. As the early stages of technology commercialization, the national R&D outcomes is being expended and appeared, however, in reality, R&D performance is not facilitated enough to meet the needs of company because This study suggest a methodology for public R&D outcome transfer to market, in particular, patent - industry information concordance is efficient system for industrial spill-over of the public R&D outcome. This study is on the co-concordance methodology that 1)International Patent Classification & Korea Standard Industry Classification 2) Key word of patent description and Products of company’s database. So, we could confidence intervals estimate 30~80% range of the co-concordance methodology and construct of mass or target marketing system. 2000년 이후 정부주도로 추진된 기술이전 및 사업화 촉진계획을 통해 국내기술이전·사업화 기반이 조성되었고, 공공부문을 중심으로 기술사업화의 초기단계로서 기술이전이 확대되는 등 점차 그 성과가 가시화되고 있다. 그러나 공공부문의 성과는 연구(research)적 관점에 치중되어 기업이 시장에서 필요로 하는 제품(product) 관점에서의 기술과는 개념적인 차이가 존재하므로 이를 극복하기 위한 노력이 필요한 시점이다. 본 연구는 기 창출된 공공부문의 성과에 대하여 기업의 수요에 연계하여 정부의 기술이전·사업화 정책에 실효성을 기할 수 있는 기술-산업 및 기술-제품 연계(concordance)에 관한 연구로서 지재권정보, 특히 특허정보를 활용하여 산업계 중심의 정보로 변환·가공·연계함으로써 기술마케팅 수행을 위한 환경을 구축하고, 최종적으로 연구개발 성과물의 산업계 확산을 위한 시스템 도출을 통해기술이전 및 사업화에 대한 생산성과 효율성을 제고함을 목적으로 두고 있다. 본 연구를 통하여 공공기관의 우수한 특허기술을 산업계로 효과적으로 전달되어 질 수 있는 기술마케팅 시스템, 특히 대중마케팅(mass marketing)에 관한방법론을 수립하고, 이에 대한 실증분석을 통해 데이터 신뢰도를 향상시켰다는 점에서 기존의 선행연구와의 차별성을 가지며, 실증분석결과 공공기관의 대표적 기술을 선정하여 분류체계 및 색인어 추출에 의한 두 가지 형태의 연계방법론을 통해 잠재수요기업을 도출한 결과 기존 선행연구 방법을 단독 활용했을 시 대비 평균 30%~80%의 신뢰구간을 확보할 수 있었고, 이에 대한 대중마케팅(mass marketing) 및 표적지향형 마케팅을 수행 할 수 있는 시스템 및 방법론을 구축할 수 있었다.
유동층 화학증착법을 이용하여 증착한 열분해 탄소의 특성에 미치는 증착조건의 영향
박정남,김원주,박종훈,조문성,이채현,박지연,Park, Jeong-Nam,Kim, Weon-Ju,Park, Jong-Hoon,Cho, Moon-Sung,Lee, Chae-Hyun,Park, Ji-Yeon 한국재료학회 2008 한국재료학회지 Vol.18 No.8
The properties of pyrolytic carbon (PyC) deposited from $C_2H_2$ and a mixture of $C_2H_2/C_3H_6$ on $ZrO_2$ particles in a fluidized bed reactor were studied by adjusting the deposition temperature, reactant concentration, and the total gas flow rate. The effect of the deposition parameters on the properties of PyC was investigated by analyzing the microstructure and density change. The density could be varied from $1.0\;g/cm^3$ to $2.2\;g/cm^3$ by controlling the deposition parameters. The density decreased and the deposition rate increased as the deposition temperature and reactant concentration increased. The PyC density was largely dependent on the deposition rate irrespective of the type of the reactant gas used.