• 월간양계
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• 통권132호
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• pp.45-48
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• 1980

산란계는 육계와는 달리 자본회전이 6개월이상 되므로 그동안 투자기간이 길기 때문에 자금계획을 철저히 세워 두어야 한다. 또한 사양기록표를 필히 준비하여 매일 작성하여 그 계군의 상황을 바로 알 수 있도록 철저한 기록을 하여야 한다. 그러므로서 사양관리의 지표가 되며 충분한 참고자료가 된다. 그리고 한 계군이 도태(경제적 수명) 될 때까지는 18개월 이상의 기간이 소요되므로 연중 방역계획을 수립하여 수시로 점검하는 자세가 필요하며 생산물인 계란을 연중 쉽게 판매할 수 있도록 시장유통 관계를 체계화하여 안정된 채란업을 할 수 있도록 하여야 한다.

• 월간양계
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• 제12권6호통권128호
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• pp.95-98
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• 1980

최근 양계기술이 발전함에 따라 경영규모도 대단위 전업 양계업을 경영하는 수가 점차 증가추세에 있으나 실제적으로는 아직도 양계의 기초부문을 망각하고 사양관리 및 운영을 하는 경우가 종종 있음을 볼 수 있다. 양계업을 경영하는 사람이라면 누구나 알아야 하고 알 수 있는 상식적인 기초 마저도 응용하지 못하여 양계산물을 판매할 때 막대한 경제적 손실을 보면서도 모르고 지나가는 합리적인 경영이 못되는 모순을 안고 있다. 또한 전혀 양계분야를 모르는 사람이 양계에 뜻이 있어 시작하려고 할 때 무엇부터 하여야 할지 모르는 상황에 당황하여 사고를 유발시키고 소기의 목적도 달성치 못하고 도중에 중단하는 예가 많아지고 있다. 이와같은 경우에 조금이라도 도움이 되었으면 하는 마음으로 사양기술의 전문적인 것을 떠나 일반적이고 기초적인 부분을 서술하도록 하겠다.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1996년도 한국자동제어학술회의논문집(국내학술편); 포항공과대학교, 포항; 24-26 Oct. 1996
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• pp.260-263
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• 1996

THe Purpose of this paper is to match the feature point of man-made structure and to obtain the DEM which are occluded in a image plane. We use the trinocular matching with epipolar lines and planes. If an occlusion appears at one of the trinocular images, the DEM mapping is used to estimate the height of feature points in it.

• 건축사
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• 제3권10호통권10호
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• pp.49-53
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• 1968

The heating system, ondol is indispensable for the Korean traditional houses. In the field of architecture today has been made rapid progress in Korea, but it is fact that under-floor heating system in traditional houses in korea has not improved up to now. As a matter of fact, to improve the traditional ondol under present housing structure is very difficult problem. So long as we live in such houses, we architects will have to fulfil our responsibility to improve the ondol system. This article offering data as a basic experiment will be helpful in studing under-floor heating system ondol.

• 한국방재학회:학술대회논문집
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• 한국방재학회 2007년도 정기총회 및 학술발표대회
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• pp.579-582
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• 2007

In this paper, the inundation simulations were carried out by using GIS tools for the analysis of detention efficiency based on the results of runoff analysis according to location and scale of regional detention facilities. The inundation maps could be drawn by the inundation simulations, and the locations and magnitude of inundation areas could be estimated through the inundation maps. The inundation simulations with GIS tools are approved to be the one of the useful method in designing optimized location and scale of regional detention facilities.

• 한국동물위생학회지
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• 제19권3호
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• pp.221-226
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• 1996

IBD's antibody level and morphological change of immune organ was examined in chicken. The results were as follows ; 1. Seventy percent at 42 day and 40% at 45 day of age chickens were reacted positively by the agar gel immunodiffusion test and 42 day and 45 day of age chickens indicated 1859, 1425 by the ELISA test, respectively. 2. In 2 and 5 day young broiler chickens, the level of maternal antibody was not proper. B/B ratio showed low level, but S/B ratio and BS were normal. 3. In layer, 100% of 8 and 86 day of age chicken and 70% at 40 day of age chicken had antibody aganist IBDV. The level of antibody was high as 2293 and 3336 in 8 and 86 day of age chicken, while was low as 1186 in 40 day of age chicken. B/B ratio showed low level and S/B ratio high level, but BS was normal.

• 생명과학회지
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• 제10권5호
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• pp.533-541
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• 2000

Compared to mammal including human, many bioreactive genes that regulate various biological events has not been cloned and characterized yet in fishes, especially shark, Scyliorhinus torazame. In orther to isolate genes that regulate physiological processes in cartilaginors fishes, we performed reverse transcription-polymerase chain reaction (RT-PCR) using the RNA of cartilage tissues of Scyliofhinus torazame. The cloned partial genes were 86%, 80%, 73%, 84%, 75%, 79% identical to $\alpha$- actin, 90-kDa heat-shock protein, methyle-neterahydrofolate dehydrogenase-methenyltertrahydrofolate cyclohudrolase-formyltetrahydrofolate synthetase, ubiquitin, glutamine synthetase and connective tissue growth factor genes of human, respectively. They also have similar nucleotide sequence homologues with those of another species. These partial bioreactive genes elucidated in this study may support to studies of phylogenetic analysis based on evolutionary relationships between shark and other species.

• 한국정밀공학회지
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• 제17권10호
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• pp.141-146
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• 2000

We introduce the algorithms of 3-D position estimation using a laser sensor for automatic die remodeling. First, a vision sensor based on the optical triangulation was used to collect the range data of die surface. Second, line vector equations were constructed by the measured range data, and an analytic algorithm was proposed for recognizing the die location with these vector equations. This algorithm could make the transformation matrix without any specific corresponding points. To ascertain this algorithm, folded SUS plate was measured by the laser vision sensor attached to a 3-axis cartesian manipulator and the transformation matrix was calculated.

• 소성∙가공
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• 제21권3호
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• pp.186-194
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• 2012

Hot stamping is a forming method that offers various advantages such as superior mechanical properties, good formability, and very small springback. However, relatively large-sized parts, such as front pillars, exhibit poor formability when hot stamped due to the limited material flow and thickness reduction imparted by the process. This reduction in thickness can also lead to cracks. One of the reasons is the relatively high friction between the sheet and the die. In this study, in order to obtain the optimal conditions for hot stamping of front pillars, various process parameters were studied and analyzed using the sheet forming software, J-STAMP. The effects of various parameters such as the die structure, blank shape, blank holding force, punch speed, clearance(upper and lower dies) and distance block were analyzed and compared.

• 전력전자학회:학술대회논문집
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• 전력전자학회 2009년도 정기총회 및 추계학술대회 논문집
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• pp.143-145
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• 2009

The method for the current equalization of the rectifier diodes in LLC resonant converter is proposed. The method decreases the current difference between the rectifier diodes using the auxiliary winding of the transformer and asymmetrical pulse width modulation (APWM). The analytical reason of the current unbalance is investigated and the operation principle of the proposed method and APWM control loop are explained. The performance of the proposed method was verified on a 480-W, 400-V/24-V dc/dc converter.