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김민건,서봉원 강원대학교 산업기술연구소 2000 産業技術硏究 Vol.20 No.B
In order to observe the pattern forming of copper plate and chemical corrosion reaction, a study on the effect of the process parameters on the formation of micro-pattern by a photochemical etching of copper plate was carried out. The results are as follows : 1) Etching rate increases as the concentration of etchant increases under the regular condition of the temperature by the increasing of diffusion rate to surface. 2) Etching rate increases as the temperature of etchant increases by the fast acting of the material delivery of diffusion to surface under the regular condition of concentration. 3) It was found that etching speed increases as the material delivery of convection rising increased when the aeration speed of etchant increases. This result was from the fact acted by the material delivery of convection rising rather than material delivery of diffusion to the surface.
Bong-Gun Seo,Sung Yong Oh,Dong Mee Lee,Hyun Seung Yoo,Suee Lee,Seong-Geun Kim,Sung-Hyun Kim,권혁찬,김효진 대한암학회 2007 Cancer Research and Treatment Vol.39 No.1
Purpose: To evaluate the therapeutic activity and safety of paclitaxel and cisplatin combination chemotherapy in patients with advanced or metastatic gastric cancers that are unresponsive to primary chemotherapy.Materials and Methods: Advanced or metastatic gastric cancer patients unresponsive to first line chemotherapy were entered into this trial. The treatment regimen consisted of paclitaxel, 175 mg/m2 by 3-hour infusion on day 1, and cisplatin, 60 mg/m2 by 1 hour infusion on day 1, with the treatment repeated every 3 weeks.Results: 37 patients were entered in this study, with 32 fully evaluable for response. 4 (13%), 13 (40%) and 15 (47%) patients achieved a partial response, stable disease and progressed, respectively. The median time to progression was 4.0 months (95% CI: 2.0~6.0 months), and the median overall survival was 12.6 months (95% CI: 5.5~19.7 months), with a 1-year survival rate of 54%. Of a total of 135 cycles of chemotherapy, grades 3 and 4 hematological toxicities were neutropenia (14%) and anemia (3%). Grade ≥2 neuropathy was observed in 6 patients (17%).Conclusion: The combination of paclitaxel and cisplatin is an effective and tolerable salvage treatment modality for advanced gastric cancer. (Cancer Res Treat. 2007; 39:6-9)
허봉구(Bong Koo Heo),이장건(Jang Gun Lee),서승철(Seung Cheol Seo) 한국경영학회 2015 經營學硏究 Vol.44 No.2
This study examines the relation between earnings management and earnings manipulation and the inconsistency between financial and nonfinancial measures. The PCAOB recognizes the potential for nonfinancial measures to be a powerful, independent benchmark for evaluating the validity of financial statements. And New Audit Standards require that nonfinancial measures may be valuable for performing analytical procedures and auditors have to consider the results when assessing fraud risk. Also, nonfinancial measures are easily verified and are not being manipulated by management(Bell et al.,1995). And Braze et al.(2009) and Dechow et al.(2011) suggest that employees are useful nonfinancial measures to verify financial performance. That is, differences between change in employees and change in total sales and total asset respectively provide information about red-flags. This study investigates the usefulness of inconsistency between financial and nonfinancial measures related variables in detecting earnings management. The sample consists of non-banking firms listed on the Korean Stock Exchange during the 2000-2011 period. The empirical tests are designed to confirm whether differences between change in employees and change in total sales or differences between change in employees and change in total assets has incremental explanatory power over discretionary accruals, earnings management through real activity in audit review firms, avoid losses, and earnings decline. We find that the difference between change in employees and change in total assets are distinguish to audit review firms. Also, We find that the difference between change in employees and change in total sales has incremental explanatory power over discretionary accruals and real based earnings management in detecting earnings management. This results mean that inconsistency between financial and nonfinancial measures are useful method of detecting earnings management. Overall, this results provide empirical evidence suggesting that the interested parties can effectively use nonfinancial measures for detecting earnings management and manipulation.
서붕교(Seo, Boong-Kyo),송봉건(Song, Bong-Gun) 한국교육시설학회 2014 敎育施設 Vol.21 No.6
After the introduction of the 7th education program, educational facilities have been requested to change to face new curriculums and have been planned. The purpose of this study is to fill up a gap between the study of education facilities, building planning and real educational spot and also find difference of plan composition by analyzing latest middle school floor plans. In this regard, floor plans of 8 middle schools proposed in LH design competition is compared and analyzed in this study. To sum up this analysis, the guide lines suggested from Korean educational development institute(KEDI) has not been followed in many building planning. For subject classrooms, guide lines from KEDI were ignored and support facilities did not planned as necessary space calculated through scale estimation program. To select a planned proposal in the future, demand of scale estimation, various studies, real educational spot and etc. should be reflected.
서환(Hwan Seo),이한욱(Han-wook Lee),김성후(Seong-hoo Kim),정원근(Won-geun Jeong),장두봉(Du-bong Jang),이주원(Ju-won Lee),이건기(Gun-ki Lee) 제어로봇시스템학회 2009 제어로봇시스템학회 합동학술대회 논문집 Vol.2009 No.12
지금까지 PPG 신호의 취득을 위해 광학적인 방법을 주로 사용해 왔다. 하지만, 기존의 광학적인 방법을 휴대형 혹은 의복형 맥파 측정 장치에 적용하기에는 많은 문제점이 있다. 먼저 LED 드라이빙을 위한 전력 소모와 실외 생활 중 취득 시 광원의 영향을 많이 받는다는 단점 때문이다. 따라서 맥파 측정을 위한 새로운 센서의 필요성이 절실해지고 있다. 이에 본 논문에서는 Piezo Film Sensor(PFS)를 이용하여 맥파에 의한 신호를 취득하고, 기존의 광학적인 방법과 비교를 통해 광원의 변화에 대한 신호의 안정성을 확인하였으며, 움직임에 대한 동잡음을 제거하여 보다 정확한 맥파신호를 추출하였다.
교과교실제 중학교의 평면구성 분석연구 - 2013년 LH 현상설계안과 실시설계의 비교 -
서붕교,송봉건,Seo, Boong-Kyo,Song, Bong-Gun 한국교육시설학회 2014 敎育施設 Vol.21 No.6
After the introduction of the 7th education program, educational facilities have been requested to change to face new curriculums and have been planned. The purpose of this study is to fill up a gap between the study of education facilities, building planning and real educational spot and also find difference of plan composition by analyzing latest middle school floor plans. In this regard, floor plans of 8 middle schools proposed in LH design competition is compared and analyzed in this study. To sum up this analysis, the guide lines suggested from Korean educational development institute(KEDI) has not been followed in many building planning. For subject classrooms, guide lines from KEDI were ignored and support facilities did not planned as necessary space calculated through scale estimation program. To select a planned proposal in the future, demand of scale estimation, various studies, real educational spot and etc. should be reflected.
박건형 ( Park Gun Hyeong ),기봉조 ( Ki Bong Jo ),서정연 ( Seo Jungyeon ),이화민 ( Hwamin Lee ) 한국정보처리학회 2016 한국정보처리학회 학술대회논문집 Vol.23 No.2
최근 미아 발생 건수는 줄어드는 추세이지만 미아 미 발견 건수는 증가 하고 있는 추세이다. 이러한 문제가 생기는 원인으로 보호자와 아동의 부주의가 원인이 되어 지고 있어 실질적인 예방책이 필요한 시점이다. 따라서 미아 발생을 예방하기 위한 디바이스 개발이 시급하다. 이에 따라 아두이노와 연동되는 어플리케이션을 개발하여 활용한다면 미아 발생을 사전에 예방할 수 있을 것이다. 본 논문에서는 아두이노를 기반으로 디바이스에 블루투스 센서, GPS 센서, 등 다양한 센서들을 장착하여 미아발생을 예방하고, 미아가 발생하더라도 발견에 도움을 줄 것이다.