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와이어 하네스 단선 단락 선별을 위한 디지털 고장 검출 시스템 개발
김선영,김아란,박재완,김하선,정재훈,김선영 사단법인 유공압건설기계학회 2023 드라이브·컨트롤 Vol.20 No.4
Wire harness is a component for efficient control when electronic parts are required such as construction machinery and electric vehicles. With emerging issues such as autonomous driving and automation in construction, a wire harness composed of multiple cables has become an essential part because more electronic parts are required. However, when a wire harness failure occurs, systems can be stopped, accidents can occur, and economic damage can be significant. Therefore, in this paper, we developed a digital fault screening system that could easily and quickly diagnose faults in the wire harness. The principle of the developed system was to sequentially send pulse signals to the wire harness and use returned signals to perform fault detection. As a result of diagnosing faults using the developed failure detection system, a detection accuracy of 99.9 % was confirmed through the experiments.
유아 수학교육 조작교구의 개발 및 활용발달에 관한 예비연구
김선영 명지대학교 자연과학연구소 1996 자연과학논문집 Vol.13 No.-
본 연구는 유아 수학교육을 위한 조작교구 활용의 활성화를 위한 기초연구로서, 유치원 교사의 수학조작교구활용에 대한 신념 및 실천, 활용되는 조작교구의 실태 등을 조사하는데 있다. 각기 다른 유치원에서 근무하는 평균 교육경력 5년인 76명의 교사들을 대상으로 설문조사를 실시하였다. 본 연구 결과, 교사들은 수학조작교구 활용에 대해 강한 긍정적인 신념을 지닌 것에 비해 활용실천은 다소 미약하며, 전반적인 조작교구가 광범위한 수학교육내용의 영역별로 구비ㆍ활용되기보다는 수개념 학습에만 편중된 것으로 나타났다. 또한 교사제작교구에 대한 높은 의존도를 나타낸 반면, 상품화된 전문적인 유아수학조작교규의 개발 및 보급이 시급한 것으로 드러났다. The present study was designed to contribute to knowledge about how to best utilize manipulatives in teaching mathematics to young children in Korea. In particular, a survey was done to investigate the kindergarten teacher's belief and instructional practice in using mainpulatives. Seventy-six teachers from the different kindergartens were surveyed. Results indicated that most teachers believed that manipulatives should be used for early childhood mathematics instruction, while they did not actually use manipulatives much. Most of the manipulative materials used by the teachers involved mainly to teach number concepts. Also, Most teachers were highly depending on the teacher-made manipulative materials. The study suggests that a variety of commercially produced manipulatives designed for teaching a broad range of content to young children should be developed in order to build sound early childhood mathematics instruction in Korea.
Computable Field 위에서 최소다항식의 계산
김선영,소순태 명지대학교 자연과학연구소 2000 자연과학논문집 Vol.19 No.-
이 논문에서 우리는 주어진 체의 유한 확장체에 있는 원소의 기약다항식을 어떻게 계산 할 수 있는지에 대하여 연구한다. 이를 위하여 우리는 Groeber 기저이론을 적용하며, 실제로 몇 가지 예에 있어 이들을 계산하기 위하여 컴퓨터 대수시스템인 REDUCE를 사용한다. In this paper, we study how to compute the irreducible polynomial of an element in a finite extension field over a given field. For this, we adapt the theory of Groebner basis to such problems, and we use the Computer Algebra System, REDUCE, in actually computing them as examlnes.
현대 건축에서의 공간 디자인 경향에 관한 연구 : 신공간(新空間)-초공간(超空間) 개념으로 본 공간 분석
김선영 영산대학교 2002 영산논총 Vol.10 No.-
Entering into the 21st century, digital culture and the innovation of media technology have drastically changed our understanding of the concept of space. Increased availability of information made possible by technological advancement has, directly or indirectly, contributed to the development of space design, which, in turn, offers a possibility for a new paradigm in space design. Given these fundamental changes, this study seeks to explore how to understand the expansion of the concept of space. In order to answer this question, this study first investigates new patterns in architectural-space design such as anti-materiality, post-structuralism, complexity, and simultaneity of space. Second, it examines the interaction-oriented nature of space among human, space, and time. Finally, based on concepts such as new space and hyper-space, which transcend the limitations of space and time, it explores new emerging trends in space design.
김선영,양기숙 숙명여자대학교 약학연구소 2003 약학논문집-숙명여자대학교 Vol.19 No.-
Cordyceps species has been used as antiinflammatory, antitoxics, diuretics in folk remedies. Recent research has been reported the effect of anticancer, antidiabetic, antimutagenic, antilipid peroxidation, intestinal immune system modulating activity. Cordyceps pruinosa, which belongs to subgenus Eucordyceps of the Genus Cordyceps, Cordycopidaceae was observed in brown rice and bulled rice supplemented with milk. The activities of MeOH extract and its fraction from cultivated Cordyceps pruinosa on antifatigue activity induced by the mice forced swimming test were evaluated. Acute toxicity was investigated. The result revealed that BuOH and H₂O fractions showed significant antifatigue effect against immobilized stress. LD_(50) of each fraction was below 6g/kg.
김선영,김재공 대한전자공학회 1983 전자공학회지 Vol.20 No.5
조합논리회로를 사용한 고속 RNS 곱셈기의 구성을 제안하였다. 연산시간과 하드웨어 절감을 결정하는 최적 moduti 선택조건에 대해서도 검토하였으며 RRNS에서는 magnitude index를 사용한 변형된 CRT로써 출력 변환하였다. 제안된 곱셈기의 추정시간은 파이프 라인없이 NRNS인 경우 31. 7ns, RRNS인 경우 47.95ns이었다. In this paper, an architecture for high-speed RNS multiplier were proposed by using com-binational logic circuit. The optimum conditions of moduli set which could be saved hardware and operation time were also considered. In the case of RRNS multiplier, output translation could be achieved effectively by means of the modified CRT with magnitude index. It is shown that the estimated multiplication time is about 31.7 ns in NRNS, whereas 47.95 ns in RRNS, respectively.