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      • KCI등재

        미분 게임이론 개요 및 최신 연구 동향

        문준 제어·로봇·시스템학회 2024 제어·로봇·시스템학회 논문지 Vol.30 No.4

        . The theory of differential games can be viewed as an extension of single-player optimal control theory to N interconnected decision-makers (or controls), which has been extensively studied over the past 50-60 years from both theoretical and practical perspectives in the control community. This paper provides a concise survey of differential games and presents several interesting future research problems.

      • KCI등재

        Risk-sensitive Control of Markov Jump Linear Systems: Caveats and Difficulties

        문준,Tamer Basar 제어·로봇·시스템학회 2017 International Journal of Control, Automation, and Vol.15 No.1

        In this technical note, we revisit the risk-sensitive optimal control problem for Markov jump linearsystems (MJLSs). We first demonstrate the inherent difficulty in solving the risk-sensitive optimal control problemeven if the system is linear and the cost function is quadratic. This is due to the nonlinear nature of the coupledset of Hamilton-Jacobi-Bellman (HJB) equations, stemming from the presence of the jump process. It thus followsthat the standard quadratic form of the value function with a set of coupled Riccati differential equations cannot bea candidate solution to the coupled HJB equations. We subsequently show that there is no equivalence relationshipbetween the problems of risk-sensitive control and H¥ control of MJLSs, which are shown to be equivalent in theabsence of any jumps. Finally, we show that there does not exist a large deviation limit as well as a risk-neutral limitof the risk-sensitive optimal control problem due to the presence of a nonlinear coupling term in the HJB equations.

      • KCI등재
      • KCI등재

        산부인과영역 난관질환에서 선택적 난관조영술의 임상적 응용

        문준,박용군 대한산부인과학회 1994 Obstetrics & Gynecology Science Vol.37 No.11

        1991년 3월부터 1994년 3월까지 약 3년간 본 고려대학교 산부인과학교실에서 선택적 난관조영술을 그 적응증이 되는 환자 294명을 대상으로 시행하여 다음과 같은 결론을 얻었다. 1. 선택적 난관조영술의 적응 환자군은 근위부 난관폐색의 치료 148예(50.3%), 원위부 난관폐색의 2차진단 138예(47.0%), 비파열성 난관임신 치료 6예(2.0%), GIFT적응군 2예(0.07%)로 분류되었다(Table 1). 2. 근위부 난관 폐쇄군에서 난관 개통율은 87.8%(130/148)였으며 개통후 임신율은 31.4%(38/121)이였다. 임신된 38예중 2예에서는 자궁외임신(난관임신)이였으며, 2예는 임신 제 1기에 유산이 되었다(Table 3). 3. 원위부 난관 폐색군에서 선택적 난관조영술을 이용하여 진단한 주위난관 유착정도를 간접적으로 진단할 수 있었으며, 기존의 난관폐색 부위 개통후 사전에 촬영한 자궁난관조영술로는 발견되지 않았던 난관채부 폐색도 28예에서 발견되었다(Table 4). 4. 선택적 난관조영술을 이용하여 PG F2a를 주임 치료한 비차열성 난관임신 6예중 4예에서는 성공하였다(66.7%). 실패한 2예중 1예는 시술 과정상 문제점이 있었으며 1예는 PG F2a를 주입했으나 기왕의 난관임신으로 절제된 난관의 잔존부위에 다시 임신된 상태였으므로, 병변내 난관 채부 유산을 유도할 수 없었다(Fig.4). 5. 선택적 난관조영술을 이용하여 시행한 CIFT 2예는 임신에 실패하였다. 이상과 같은 결론으로 미세 카테타를 이용한 선택적 난관조영술을 각종 난관질환의 진단과 치료에 매우 효율적으로 적용할 수 있는 간편한 방법으로 사료되며, 앞으로 이에 대한 연구가 더욱 진행되어야 할 것으로 사료된다. The selective salpingogram is a simple and non-invasive method for the diagnosis and treatment of various tubal diseases. Describing the procedure of selective salpingogram, cervical canula is initially inserted into the uterus and supported by ballooning. And then, a 6F catheter is inserter into the tubal ostium with the aid of a J-shaped guid wire and the guide wire is advanced into the tube under fluroscopy. In previous studies, they applied this method for the treatment of proximal tubal obstruction only, but we used this method for both treatment and diagnosis of the tubal obstruction, treatment of the unruptured tubal pregnancy by injection of PG F2a and GIFT. We recanalized the 130 cases(87.8%) among the proximal tubal obstruction group and pregnancy rate of recanalized patients was 31.4%. Using this method, we found the 28 cases of fimbrial obstruction, which could not be detected by conventional hysterosalpingogram. We used this method for the treatment of cases with unruptured tubal pregnances by local PGF2a injection. The successful rate of this treatment was 66.7%. In conlcusion, we suggest that we use the selective salpingogram as a safe and simple method for the treatment & diagnosis of various fallopian tubal diaseases.

      • SCIESCOPUSKCI등재

        자궁경부암 조기진단에 있어서 세포진 검사, 질확대경 소견 및 질확대경 조준하 생검의 비교분석에 관한 연구

        문준,서호석 대한부인종양 콜포스코피학회 1994 Journal of Gynecologic Oncology Vol.5 No.1

        A total of 369 patients with abnormal cervical cytology and suspicious lesions of the cervix were colposcoped end 356 patients of whom were, taken directed biopsy to assess the lesions precisely and compare the accuracy of the each methods. The results of cervical cytology were also compared with the colposcopic impression and colposcopically directed biopsies. 252 patients with abnormal celposeopic findings were performed conization, simple hysterectomy or radical hysterectomy depending on their current disease status. The rate of one grade less or more advanced correlation between the cervical cytology and directed biopsy was 72.4% and that of two grade less was 80.3% and as for the correlation between the colposcopic impressions and the colposcopically directed biopsies, the rate of compatibility was 91.5%. Bases on the histopathologic findings of the surgical specimen, the compatibility rates of eervical cytology, colposcopic impressions and colposcopically directed hiopsies were 70.2%, 90.6% and 98.0% respectively. With these results, we can reach a conclusion that the colposcopic impression itself is almost as accurate as the colposcopically directed biopsy and the directed biopsy can take the place of conization so far as the diagnostic accuracy is concerned.

      • KCI등재

        파티클 필터 알고리즘을 이용한 다기능레이더 표적 추적 필터 설계

        문준,Moon, Jun 한국군사과학기술학회 2011 한국군사과학기술학회지 Vol.14 No.3

        The estimation filter in radar systems must track targets' position within low tracking error. In the Multi-Function Radar(MFR), ${\alpha}-{\beta}$ filter and Kalman filter are widely used to track single or multiple targets. However, due to target maneuvering, these filters may not reduce tracking error, therefore, may lost target tracks. In this paper, a target tracking filter based on particle filtering algorithm is proposed for the MFR. The advantage of this method is that it can track targets within low tracking error while targets maneuver and reduce impoverishment of particles by the proposed resampling method. From the simulation results, the improved tracking performance is obtained by the proposed filtering algorithm.

      • KCI등재

        답토양유형중(畓土壤類型中) 보통답(普通畓)의 특성연구(特性硏究)

        문준,엄기태,이경수,Moon, Joon,Um, Ki-Tae,Lee, Gyeong-Su 한국토양비료학회 1987 한국토양비료학회지 Vol.20 No.1

        답토양(畓土壤) 6개유형중(個類型中) 가장 넓은 분포면적(分布面積)을 가진 보통답(普通畓)의 특성(特性)과 토지이용(土地利用) 및 토양생성(土壤生成)에 대(對)하여 조사연구(調査硏究)한 결과(結果)는 다음과 같다. 1. 보통답(普通畓)의 분포면적(分布面積)은 전체답면적(全體畓面積)의 33%에 해당(該當)되며 그중(中) 곡간(谷間) 및 선상지(扇狀地)에 54% 그 외(外)는 하해혼성평탄지(河海混成平坦地)와 하성평단지(河成平坦地)에 분포(分布)한다. 2. 보통답(普通畓)의 토양배수(土壤排水)는 대부분(大部分) 약간(若干) 불량(不良)으로 글라이화(化)된 식질(埴質) 및 식양질계(埴壤質系)로 물리성(物理性)이 양호(良好)한 편이고 토심(土深) 및 지하수위(地下水位)가 깊우며 토양(土壤)의 잠재생산능력은 높은 편이다. 3. 전체보통답(全體普通畓)의 이화학적특성(理化學的特性)을 보면 점토함량(粘土含量)은 표토(表土)와 심토(心土)가 많은 편(便)이며 토양반응(土壤反應)은 약(弱)한 산성(酸性)이었다. 유기물함량(有機物含量)은 표토(表土)는 있는 편(便)이나 심토(心土)는 적었다. 염기치환용량(鹽基置換容量)은 높고 치환성염기(置換性鹽基)는 표토(表土) 6.62, 심토(心土) 7.74 me/100 g 정도(程度)였다. 염기포화도(鹽基飽和度)는 높았으며 유효인산(有效燐酸)은 우리나라 답토양평균치(畓土壤平均値)인 60 ppm 보다는 다소(多少) 하회(下廻)하였다. 4. 생성원인(生成原因)은 제사기신층(第四期新層)에 속(屬)하지만 현세충적층인 것으로 보여지며 미농무성(美農務省)의 구분류체계(舊分類體系)에 의(依)하면 대부분(大部分) Low humic gley soils에 해당(該當)되고 F. A. O분류안(分類案)에 의(依)하면 Gleysols에 속(屬)하며 일본(日本)의 시비개선사업(施肥改善事業)에서는 토양군(土壤群)은 회색토양(灰色土壤), 토양아군(土壤亞群)은 회갈색토양(灰褐色土壤)이다. US soil taxonomy(Subgroup)에 의(依)하면 Typic 및 Fluventic Haplaquepts에 속(屬)한다. This study was designed to evaluate the characteristics, land use and genesis of well adapted paddy soils. They were mostly classified as the Haplaquepts in the U.S.D.A soil taxonomy and as the Grey soils in the Japanese soil classification system. The proportion of these soils in the total acreage of paddy lands was thirty three percents. The fifty four percents in average of these soils were distributed on the local valley and fans on gentle slopes developed from granite, granite gneiss and shale parent materials. The rests were on the fluvio-marine deposits and alluvial deposits. The soils were characterized with prominant development of gleized horizons and clayey or fine loamy textured category. The available soil depth and the ground water level were relatively deep. The base saturation percent were high with weak acidic pH. The potential productivity of these soils was high.

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