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朴煥奎,金鍾一,金鎭興,李茂錫,朴吉文,鄭洛奎,李行男,李東起 조선대학교 동력자원연구소 1984 動力資源硏究所誌 Vol.6 No.2
Separation, pressure and velocity distributions were studied fully developed two dimensinonal, incompressible flow over a flat airfoil in subsonic wind tunnel. Velocity and turbulence were measured with a two channel constant temperature hot wire anemometer and pressure with a pitot tube and pressure tranducer system. The experimental results were obtained as follow: (1) Turbulent intensity of shear layer just outside the separation point is considered to affect the size of separation bubble. (2) Static pressure coefficient is separated into three regions according to its value change. (3) Separation point is varied with the change of attack angle. (4) Velocity distributions and boundary layers normal to airfoil surface are changed as variation of attack angle of airfoil.
박종락 한국의사결정학회 2002 경영과학연구 Vol.11 No.-
Nowadays, the complexity and dynamics of organizations, and the growth in networked information resources require automated negotiation to support flexible and fast online negotiation. Many researchers have studies automation, which mainly used to solve conflicts in distribution of tasks and resources between agents in multi-system. There are many methods to support automated negotiations. But, it's very complex and has many hypotheses which are not easy to satisfied in practice. So we may adopt adding argument method which has five type of attribute. Aim of the paper is to describe through a simple example a general methodology for adding arguments to explain flexible and fast online negotiation.
접합형식구분에 따른 고강도강 기둥-보 용접접합부의 인성에 관한 연구
박양희,김성배,김종락 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.1(구조계)
This paper aimed to evaluate the characteristic and behaviour of fracture on the beam to column welded connections of high strength steel structures subjected to cyclic loading. Specimens were designed as a unit frame of tall building's middle- stores. For the study, SM570 and HP steel were used for columns while SM490 was used for beam. Ten specimens in total were carried out to the test. The major test parameters are steel strength, panel stiffness and scallop type. The results are as follows: In comparison with steel strength between SM570 steel specimen and HP steel one : HP steel steel specimen was showed over 130% of strength improvement ratio(α) and draft angle(θ) to SM 570 type according to the panel stiffness and scallop shape. Drift Angle of HP specimens and SM570 ones showed 0.071~0.091 and 0.036~0.065 radians each which partially satisfied the FEMA 350 criteria (0.04 radians for SMF). In conclusion, using weak panel and non-scallop shape specimens were considered to be superior structural strength, ductility capacity.
파인블랭킹 공정 시 클리어런스 및 V링 형상의 영향에 관한 연구
김형락,박종연,김형종 江原大學校 産業技術硏究所 2004 産業技術硏究 Vol.24 No.A
Fine blanking can be considered as a manufacturing process capable of producing sheet metal parts with completely smooth edges that may be hardly obtained by conventional shear-cutting procedures. This fact, together with the considerable economic advantages offered by this process, has been responsible for the rapid acceptance of fine blanking throughout the manufacturing industry all over the world, and the discovery of many new applications. This study was performed to investigate the effect of clearance and V-ring shape on the quality of sheared surface in a fine blanking process. The critical value needed to apply the normalized Cockcroft-Latham fracture criterion to the simulation of fine blanking is obtained by correlating the result of finite element analysis and that of experiment for the uniaxial tensile test. From finite element analysis of an axisymmetric fine blanking process. It has been found that punch load, die-roll depth, burnish zone size and shape of sheared surface are considerably influenced by clearance and V-ring shape.
曺秉樂,李種達,朴永圭,李哲熙,李武康 嶺南大學校 環境問題硏究所 1981 環境硏究 Vol.1 No.1
In this study, a method of treating waste water from the Bisan Dyeing Industry complex has been developed. This process will be used as a model for treating waste water from the future large-scale dyeing industy complex. If the concentrated dyeing waste water may be seperated from the scouring waste water the C-2 process is the most economical to treat the concentrated dyeing waste water first by the coagulation precipitation process and the scouring waste water mixed with the effluent of coagulation precipitaion next by the activated sludge process. When it is impossible to seperate the concentrated dyeing waste water from scouring water for the Biasn Dyeing Industry complex, the B-2 process treating by the activated sludge process following coagulation precipitation with alum can be applied.
바코드 자동부착 시스템을 이용한 생산정보의 효율적인 관리
허성관,박종락,임승환,정종태 대한설비관리학회 2004 대한설비관리학회지 Vol.9 No.1
On this thesis, We studied on effective management of manufacturing information using auto bar code attachment system. Nowdays, Management Information System is essential factor to manage a company. This paper used bar code system to obtain data and dealing with data. And, In this paper, We proposed the method of development about auto bar code label attachment system for manufacturing process. we show the way of stepping motor control, bar code printer and
정원,박종락 대구대학교 산업기술연구소 2003 産業技術硏究 Vol.15 No.1
PC3 process requires highly automated processing. It's assembly line consist of many different kinds of systems. And barcode is used for monitoring the pcb assembly line. But it IS difficulty to attaching barcode label on the PCB. Barcode attachment error ratio is high. Because it's very small size and the processing cycle times are very short So. In this paper, We proposed the method of development about auto barcode label attachment sysem for PCB process. we show the way of stepping motor control, and barcode printer.
정원,박종락 한국정보전략학회 1999 추계공동학술대회 논문집 Vol.- No.01
줌렌즈 카메라 보정은 매우 중요하고 적어도 두 가지 면에서 어려운 문제이다. 첫 번째는 실시간의 변화에 따라 카메라 내부 파라미터의 보정이고 두번째는 단일 렌즈 시스템의 판홀모델은 줌렌즈시스템이 바로 적용하기가 어렵다. 그래서 이 논문에서는 이러한 문제의 일부분을 렌즈의 굴절현상, 초점 거리의 보정과 모델링, 확대에 관한 중요한 원리들뿐만 아니라 실제적으로 유용한 부분들을 기술하였다. 컴퓨터에 의해 제어되는 줌, 초점, 그리고 구경들의 실험결과가 제시되어 있다. Zoom lens camera calibration is an important and difficult problem for two reason at least. First, the intrinsic parameters of such a camera change over time, it is difficult to calibration them on-line. Secondly, the pin-hole model for single lens system can not be applied directly to a zoom lens system. In this paper, We address some aspects of this problem
이철제,박양희,김성배,김종락 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2(구조계)
This paper aimed to evaluate the toughness of the 600N grade high strength column to beam steel welded joint which subjected to cyclic loading. The specimens were designed as a unit frame of tall building's middle-stores, and cross type weld connection. SA440 were used for column and SM490 for beam. Six tests were carried out. EBS (Enlarged Beam System) specimens were considered to be superior structural strength, ductility capacity. Beam to column connection using EBS showed higher strength and toughness than the basic shape.
정원,신현명,박종락 한국경영과학회 1999 經營 科學 Vol.16 No.2
This paper presents an automated visual inspection/measuring system for the door inner panel manufacturing process The main objective of this research is to develop inspection applications with a machine vision system related to the determination or quantification of parameters such as dimension, shape, quality of surfaces, number of holes in a panel, and presence or absence of specific features For quality measurements, we showed a subpixel image processing technology that will improve the consistency of results and level of precision Also presented is a data analysis method to detect process shifts so that corrective action can be undertaken before more defective units are manufactured