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박병욱,최윤수,안기원,강의성 한국공간정보학회 2002 한국공간정보학회지 Vol.10 No.3
현행 노선선정시 1:5,000 축척의 수치지도를 이용하여 계획, 검토하고 있으나, 수치 지도는 수정, 갱신주기가 원활치 못하여 급속한 개발에 따른 지형·지물의 변화 등이 반영되지 않아 실제와 상이한 부분들이 존재한다. 이에 대한 대안으로서, 본 연구에서는 기존 노선계획 방법에 의해 수치지도를 기본자료로 사용하여 노선선정을 한 후, 이를 IKONOS 위성영상과 중첩하여 지형·지물의 사실적 표현을 통한 문제점을 파악하고, 이에 따른 노선변경을 하였다. 이로써 기본설계의 질적 내실화와 지형에 맞는 합리적인 도로의 선형을 도출할 수 있었으며, 차후 실시설계 단계에서의 노선변경을 미리 예방함으로써 경제성을 도모할 수 있었다. 한편, IKONOS 영상의 기하학적 보정에 있어서 지상기준점 수가 충분할 경우에는 TPS(Thin Plate Spline)변환을 효과적으로 활용할 수 있음을 알 수 있었다. Nowadays, digital maps of 1:5,000 scale are used to plan and review far road alignment design. However, the updating and modifying period of digital maps is not so harmonious as topographical changes caused by rapid developments can be reflected in digital maps, the different areas between real surface and digital map can be found easily. This research is aimed to suggest that the use of high resolution satellite image is effective way to get latest topographical information for road alignment design about wide region. IKONOS satellite images were geometrically corrected, and the road alignment data previously designed by traditional procedure were overlapped on the satellite images. As a result, the satellite image maps clearly described wrong road alignment, and modification of road alignment could be accomplished adequately By these procedures, road alignment design was Improved in quality, and could be reasonable and economic design to prevent modification that would be happened in the next step of practical plan. For the geometric correction method of IKONOS images, Thin Plate Spline(TPS) transformation with large number of ground control points, as well as ortho rectification, was effective.
Filtered-X LMS 알고리즘의 오동작에 관한 고찰
박병욱,김학윤 청주대학교 산업과학연구소 2000 産業科學硏究 Vol.18 No.1
The Filtered-X LMS(FXLMS) algorithm in active noise contol(ANC) requires to estimate the transfer characteristic between the output and the error signal of the adaptive canceler. The modeling errors, which secondary-path transfer function is not corresponded with modeling secondary-path exactly, affect convergence speed and adaptive filter coefficients. The adaptation of the adaptive filter coefficient has behaviors when modeling errors are occurred. Therefore, we study about convergence characteristics of the Filtered-X LMS algorithm when modeling errors are occurred.
박병욱,김학윤 청주대학교 산업과학연구소 2001 産業科學硏究 Vol.19 No.1
A method of an adaptive prediction error filter has been proposed for improving secondary path modeling performance by Kuo et al, in the modeling method of the secondary path using on-line This method have some disadvantages that have to use a additive noise and a noise control performance is not good since it is focused on the estimation performance of the secondary path. In this paper, the modified Kuo model, using gain control parameters and delay, is for using a reference signal to additive noise to improve the problems of the existed Kuo model is proposed. Gain control parameters and delay for optimal performance of the proposed system were 003 and 92, respectively. Simulation results were that estimation performance of the secondary path was same to that of the Kuo model, and noise control performance was improved by 20dB compare to that of the Kuo model The proposed model is simplified since it did not need to use an additive noise generator.
半夏厚朴湯을 투여하여 흉막삼출액이 소실된 환자 : 1례 1 Case
박병욱,이은,고흥 世明대학교 한의학연구소 2002 韓醫學硏究所 論文集 Vol.4 No.-
We treated a 78 year-old male patient with loculated pleural effusion. The patient complained of cough, sputum and throat discomfort. We diagnosed him as Globus hystericus (梅核氣) and gave Banhahoobak-tang three times a day. After treatment, all the main symptoms were disappeared and pleural effusion was absorbed. Therefore, we suggested that Banhahoobak-tang had a effect on the pleural effusion.
GPS/INS를 활용한 항공 정사영상 제작에 관한 연구
박병욱,이창재,서상일 한경대학교 2008 論文集 Vol.40 No.-
In this study we took the aerial photos scaled 1:5,000 with aircraft equipped GPS/INS. DEM was generated by automatic image matching method using the exterior orientation parameters obtained by GPS/INS, and the ortho-images were produced by differential rectification based on that. As the result of measurement of RMSE based on digital map for ortho-images produced with GPS/INS data, the horizontal position error was 61cm that was good enough to satisfy the precision demand of 1:1,000 ortho-image map. There were no big differences in precision of ortho-images between GPS/INS and aerial triangulation process. It seems that the producing method of ortho-image using GPS/INS data can be speedier and more efficient method than traditional method using aerial triangulation
박병욱,성열문,추영배,곽동주 경성대학교 공학기술연구소 2008 공학기술연구지 Vol.15 No.-
Recently, much interest has been paid in using plastic materials for replacing glass substrates with increasing applications for large scale flexible flat panel display and flexible film-typed dye sensitized solar cell(DSCs) In particular, flexible film-typed dye sensitized solar cell(DSCs) has attracted much interest because it can be applied to a smart window, a wearable PC as a supplementary power supplier and a winter clothes In this paper ZnO:Al thin film, which serves as a transparent conducting layer, was deposited on the polyethylene terephthalate(PET) substrate by the capacitively coupled r. f. magnetron sputtering method The effect of r. f. discharge power on the morphological, electrical and optical properties of ZnO:Al thin film were studied The film deposited on the PET substrate at r. f. discharge power of above 200 W and gas pressure of 5mTorr showed the minimum resistivity of about 2×10-3 Ω-cm, a transmittance of about 87% and optical band gap of 3.56 eV.