• 대한기계학회논문집A
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• 제20권6호
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• pp.1882-1892
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• 1996

This paper is concerned with the position control of the ond degree-of freedom manipulator using pneumatic artificial muscle actuator which is built to have a proper compliance. For t his pneumatic artificial muscle actuator though, it is difficult to make an effective control scheme due to the nonlinearity and uncertainties on the dynamics of the actuator. In this paper, a third-order equation of motion is derived for the actuator including the dynamics of the pneumatic servovalve. Later, various modeling uncertainties due to the nonlinearity and unmodeled dynamics of the servo vlave and the actuator are taken care of, as a trade-off between the closed-loop performance of the controlled system and its robustness to uncertainties. A controller using .mu. synthesis thchnique is designed, and robust performance against measurement noise, various modeling uncertainties due to the dynamics of the servo valve and actuator is achieved. The effectiveness of the proposed control methods is illustrated through simulations and experiments.

• 한국응용곤충학회지
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• 제50권2호
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• pp.141-149
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• 2011

애접시거미류 5종을 그림과 함께 기재하였다: 1 신종, Saitonia pilosus n. sp. (털애접시거미), 와 한국미기록종 4종, Ceratinella brevis (Wider, 1834) (껍질애접시거미), Erigone atra Blackwall, 1833 (긴톱날애접시거미), Maso sundevalli (Westring, 1851) (마소애접시거미), 그리고 Parasisis amurensis Eskov, 1984 (대륙애접시거미). 4 속, Ceratinella Emerton, 1882 (껍질애접시거미속), Maso Simon, 1884 (마소애접시거미속), Parasisis Eskov, 1984 (대륙애접시거미속), 그리고 Saitonia Eskov, 1992 (이마애접시거미속), 역시 한국미기록속이다.

• Journal of Electrical Engineering and Technology
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• 제9권6호
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• pp.1882-1890
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• 2014

This paper proposes an augmented Lagrange Hopfield network (ALHN) based method for solving multi-objective short term fixed head hydrothermal scheduling problem. The main objective of the problem is to minimize both total power generation cost and emissions of $NO_x$, $SO_2$, and $CO_2$ over a scheduling period of one day while satisfying power balance, hydraulic, and generator operating limits constraints. The ALHN method is a combination of augmented Lagrange relaxation and continuous Hopfield neural network where the augmented Lagrange function is directly used as the energy function of the network. For implementation of the ALHN based method for solving the problem, ALHN is implemented for obtaining non-dominated solutions and fuzzy set theory is applied for obtaining the best compromise solution. The proposed method has been tested on different systems with different analyses and the obtained results have been compared to those from other methods available in the literature. The result comparisons have indicated that the proposed method is very efficient for solving the problem with good optimal solution and fast computational time. Therefore, the proposed ALHN can be a very favorable method for solving the multi-objective short term fixed head hydrothermal scheduling problems.

• 수산해양교육연구
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• 제28권6호
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• pp.1882-1893
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• 2016

This study intended to look into the causal relations, in which a ski class conducted at a college is linked from college students' participation motivation to satisfaction and revisit. Among others, this study intended to boost the quality of the ski class conducted at a college with focus on the difference between the influences on satisfaction and revisit according to pre/post class participation. Further, the purpose of this study is to inquire into an ultimate basic plan required for winter sports development on the basis of the deduced results, through which this study drew the conclusion as follows: First, it was found that the influence relationship between class satisfaction before/after class was established in a joy seeking factor according to ski class participation motivation. Second, the daily routine deviation factor among the sub-factors of ski class participation motivation was found to have a positive effect on revisit before/after class while friendship promotion factor, health factor and physical strength factor were found to have an influence on revisit after class.

• 박물관보존과학
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• 제4권
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• pp.47-55
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• 2003

유창종 선생이 기증한 여러 유물 중 채색전돌(증3432), 귀면와(증1886), 그리고 귀면와범(증1882)에 대한 복제 및 보존처리를 실시하였다. 채색전돌은 물감층의 복원에 중점을 두었고, 귀면와는 기존의 어색하게 수리한 부분을 깨끗이 제거한 후 결실된 부위를 완전하게 보존처리를 하였다. 그리고 특별전을 위해 실제 귀면와범으로 귀면와를 복제하는 과정을 소개하고 한다.

• 한국수학교육학회지시리즈E:수학교육논문집
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• 제25권4호
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• pp.641-651
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• 2011

한말 국학자이며 애국계몽운동가인 안종화(安鍾和, 1860. 11. 9-1924. 11. 24, 본관은 경주(廣州)-경능(廣陵), 호(號)는 함재(涵齋), 자(字)는 사응(士應))는 조선의 마지막 과거인 1894년 식년 문과에서 이상설(李相卨, 1870-1917)과 같이 합격하였으며, 두 분 모두 수학책을 저술하였다. 대만의 수학사학자인 홍만생(洪萬生)은 규장각의 조선 산서를 비교 검토하던 중 안종화의 <수학정경절요괄집(數學正徑節要括集), 약칭(略稱) 수학절요(數學節要)>을 처음 발견하고, 이 책의 잠재적 가치에 대하여 크게 평가하였다. 본 연구에서는 안종화가 1882년에 저술한 현재까지 발굴된 조선의 마지막 전통수학책인 <수학절요>에 대하여 최초로 소개한다. <수학절요>의 목록을 살펴보면 이 책이 기본적으로 <구장산술(九章算術)>의 내용을 중심으로 다루고 있으며, <산학정의(算學正義)>와 <수리정온(數理精蘊)>의 영향을 많이 받았음을 알 수 있는데, 특히 승법은 포지금(鋪地錦)이라 불리는 방법으로 계산되어 있다.

• Animal cells and systems
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• 제5권1호
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• pp.25-29
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• 2001

Two new species belonging to genus Mycale are described from the waters around Geojedo Island and Gageodo Island, Korea. Mycale (M.) geojensis n. sp. seems close to M. (M.) adhaerens parvasigma Hoshino, 1981, but our new species has three categories of anisochelae. M. (Aegogropila) hentscheli n. sp. is closest to M. (A.) obscura (Carter, 1882) in shape and spicule, but has no large sigma.

• 환경생물
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• 제35권2호
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• pp.184-190
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• 2017

Four new species of the spider genera Trilacuna Tong and Li, 2007, Orchestina Simon, 1882 and Hahnia C. L. Koch, 1841 are described from Korea; Trilacuna hansanensis n. sp., Orchestina infirma n. sp., Hahnia montana n. sp. and Hahnia implexa n. sp. The genera Trilacuna and Orchestina are reported from Korea for the first time.

• 대한지리학회:학술대회논문집
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• 대한지리학회 2003년도 춘계학술대회
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• pp.9-13
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• 2003

지지학은 지역지리학(regional geography)으로 달리 표현되는데, 특정 지역을 지형, 기후, 생물 같은 자연적인 현상과 교통, 취락, 경제, 인구 등의 인문적인 요소를 분석하고 종합적인 판단을 내려 지역성을 규명하는 분야라고 하겠다. 지지는 땅을 기술한다는 의미를 담고있는 용어로서 지리학(geo-graphy)의 출발과 맥을 같이한다. 근대지리학의 발상지인 독일의 경우지지전물관(Museum fur Landeskunde, Leipzig, 1892)과 지지연구실(Institut f\ulcornerr Landeskunde, Zentralarchiv for Landeskunde von Deutschland, Bad Godesberg, 1882)을 운영하고 있고, 가까운 일본만 하더라도 풍토기라는 이름의 다양한 지지서가 오래 전부터 편찬되어 왔으며 공식적인 연구기관으로 일본지지연구소를 두고 있다. (중략)

• 한국패류학회지
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• 제24권2호
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• pp.89-92
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• 2008

A new species of the mytiloidean freshwater bivalve is described from Baengnyong Cave, Pyeongchang-gun, Gangweon-do. Limnoperna coreana n. sp. belongs to the genus Limnoperna Rochebrune, 1882 with the byssus. This species has a small shell with the glossy surface and rounded-triangular and differs morphologically from all of its congeners.