• Title/Summary/Keyword: 발견

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An Analysis on Problem-Finding Patterns of Well-Known Creative Scientists (잘 알려진 창의적 과학자들의 과학적 문제 발견 패턴 분석)

  • Kim, Youngmin;Seo, Hae-Ae;Park, Jongseok
    • Journal of The Korean Association For Science Education
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    • v.33 no.7
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    • pp.1285-1299
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    • 2013
  • Nurturing students' scientific creativity is considered an important element in science education in Korea. The study aims to explore patterns displayed by well-known scientists in their quest for problem finding. Each case of scientists' course of problem solving is described in terms of historical background, a process of problem finding, and a process of problem solving. There are five patterns from ten scientists which are as follows: Pattern 1 is that scientists find problems from insufficiencies and/or errors from explanation of theories at the time and the related cases are A. Lavoisier, G. Mendel, and J. Watson. Pattern 2 shows that scientists find a problem because of strange phenomena unexplained by theories at the time, and here important case studies are E. Rutherford and W. R$\ddot{o}$ntgen. Pattern 3 demonstrates that scientists find a problem from analogical reasoning between known theories and unknown science phenomena. The cases include S. Carnot and T. Young. Pattern 4 points to the fact that scientists find a problem while they utilize a newly invented experimental instrument. Here, G. Galilei is an important example. Pattern 5 establishes that scientists happen to find a problem while they conduct research projects. The works of M. Faraday and J. Kepler are prominent case studies related to this pattern.

비타민 (I)

  • 최진호
    • KOREAN POULTRY JOURNAL
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    • v.24 no.1
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    • pp.124-127
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    • 1992
  • 비타민(vitamin)이라는 말은 비타민을 처음 발견한 Casimir Funk에 의해서 명명되었는데 생명체에 없어서는 안될 긴요한(vital) 물질이면서 아미노기(-$NH{_2}$)를 함유하고 있는 아민(amine)이라는 뜻으로 vital amine을 줄여서 vitamine이라고 하였다. 그 뒤에 끝의 e가 없어져서 오늘날에는 vitamin이라고 쓰고 있다. Funk가 처음 발견한 비타민은 오늘날 비타민 $B{_1}$이라고도 불리는 티아민(thiamin)이었으며 모든 비타민을 일시에 발견한 것은 아니다. 티아민이 처음 발견된 후에 수십년에 걸쳐서 많은 사람들에 의해서 여러 가지의 다른 비타민이 발견되어서 오늘날에는 14가지 종류의 비타민이 알려지고 있다. 이중에서 처음으로 발견되었던 티아민이 아민이었기 때문에 비타민이라는 말이 명명되었는데 그 뒤에 다른 비타민들의 화학구조가 밝혀짐에 따라 모든 비타민이 다 아민은 아니라는 사실을 알게 되었다. 그럼에도 불구하고 아직까지 비타민이라는 용어는 그대로 사용하고 있는 것이다.

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한국 경북 고령지역에서 발견된 중생대 백악기 담수어류화석 Wakinoichthys sp.

  • Kim, Tae-Wan;Yang, Seung-Yeong
    • 한국지구과학회:학술대회논문집
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    • pp.126-134
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    • 2005
  • 최근 중생대 전기 백악기(약 1.2Ma) 지층이 분포하는 경북 고령의 지역에서 대량으로 발견된 골설목(骨舌目, Osteoglosomorpha) 어류화석을 기재하고 특징을 살펴본 후 현생골설목과의 관계를 조사하고, 아울러 다른 나라에서 발견된 것과의 비교연구를 통해 우리나라에서 발견된 어류화석의 고생물학적 의의를 살펴보았다. 경상층군에서 발견된 어류 화석군은 Semionotiformes, Amiiformes목, 골설목, 당멸치목(Elopiformes), 여을멸목(Albuliformes), Ichthyodectiformes목 등으로 구성되어 있으며, 그중 골설목(Osteoglossiformes)과 여을멸목(Albuliformes)이 가장 풍부하다. 경상어류화석군은 한국의 중생대 백악기 지층에서는 유일한 어류화석군이다. 또한 어류화석과 함께 발견된 여러 화석 및 지질학적 자료를 토대로 어류화석 서식 당시의 고환경을 유추하였다.

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How Many Korean Science High-school Students Find the Same Scientific Problem as Kepler Found in Optics and Physiology? (얼마나 많은 과학고등학교 학생들이 케플러가 광학과 생리학에서 발견한 과학적 문제를 발견하는가?)

  • Kim, Young-Min
    • Journal of Gifted/Talented Education
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    • v.21 no.2
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    • pp.575-589
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    • 2011
  • The aims of this study are to investigate how Kepler found a scientific problem for the retinal image theory and to investigate how the science high-school students respond when the same situation is applied to them. And their results was compared with general high-school students' results. Kepler found the scientific problem in the eye vision through the critical analysis of contemporary theories of vision, based on his relevant knowledge of optics. When we applied the same situation to the Korean science high school and general high-school students, only a few of science high-school students found the scientific problem as same as Kepler's finding. From the results, it is suggested that in development of creativity teaching material, the situations like Kepler's problem finding need to be included in the programs.

Multi-agent-based approach for service discovery in smart meeting spaces (지능형 협업환경에서 서비스 발견을 위한 다중 에이전트 시스템 적용 방법)

  • Bae, Chang-Hyeok;Han, Sang-Woo;Kim, Jong-Won
    • 한국HCI학회:학술대회논문집
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    • pp.669-673
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    • 2008
  • The service discovery method is an important technology finding and offering users' desirable services in smart meeting spaces. Extensive researches of the service discovery methods are achieved: SSDP(simple service discovery protocol) of UPnP(universal plug & play) and so on. However, there are several limitations to satisfy the requirements of service discovery in smart meeting spaces. In this paper, the requirements of service discovery in smart meeting spaces are investigated and the service discovery method based on multi-agent system is proposed in the practical aspect. Additionally, we explore the possibilities of the proposed approach by implementing a couple of services belonging to the smart meeting spaces.

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Design and implementation of simulator for fault coverage analysis of commuication protocol test case (통신 프로토콜 시험항목의 오류 발견 능력 분석을 위한 시뮬레이터의 설계 및 구현)

  • 김광현;허기택;이동호
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.22 no.8
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    • pp.1823-1832
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    • 1997
  • In this ppaer, fault coverage analysis of a conformance test case for communication protocols, specified as a deterministic finite state machine(DFSM) is presented. The fault coverage analysis of a test case is defined by measuring the extent of the faults detected using a generated test case. The method that evaluates fault coverage analysis for a test case, has been researched by arithmetic analysis and simulation. In this paper, we designed and implemented a simulator for fault coverage analysis of a communication protocol teat case. With this result for Inres protocol, output fault and state merge and split fault have a high fault coverage of 100%. This simulator can be widely used with new fault coverage analysis tools by applying it to various protocols.

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Service Discovery Mechanism based on Trustable DHT in MANET (MANET에서 신뢰성 있는 DHT기반의 서비스 발견 기법)

  • Han, In-Sung;Ryou, Hwang-Bin
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.13 no.9
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    • pp.1947-1954
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    • 2009
  • Service discovery mechanism is a core technique for getting a desired service in MANET(Mobile Ad-Hoc NETwork) environment. However, As feature of MANET, existing mechanisms have some problem that service requester search for trustable service. also it can not support scalability. in this paper, how to reliably support applications such as service discovery on top of MANET. we are firstly finding a trustable service provider and configure DHT(Distributed Hash Table). P2P's DHT can be adopted to service discovery mechanism because P2P and MANET share certain similarities, primarily the fact that both are instances of self-organizing decentralized systems. Especially, Proposed DHT systems used for P2P overlay network can be effective in reducing the communication overhead in service discovery. So proposed mechanism can support for reliably searching required service and scalability. Simulation results show that our mechanism is scalable and outperforms existing service discovery mechanism.

Analysing the Processes of Discovery and Proof of the Mathematically Gifted Students (수학 영재 학생들의 발견과 증명에 대한 연구)

  • Na, Gwi-Soo
    • Journal of Educational Research in Mathematics
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    • v.21 no.2
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    • pp.105-120
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    • 2011
  • This research intends to analyse how mathematically gifted 8th graders (age 14) discover and proof the properties on the sum of face angles of polyhedron. In this research, the problems on the sum of face angles of polyhedrons were given to 36 gifted students, and their discovery and proof processes were analysed on the basis of their the activity sheets and the researcher's observation. The discovery and proof processes the gifted students made were categorized, and levels revealed in their processes were analysed.

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Discovery of Proximate Devices with Partial Information for Device-to-Device Communication Systems (디바이스 간 직접통신 시스템을 위한 부분 정보를 이용한 근거리 디바이스 발견)

  • Yeo, Gyu-Hak;Chae, Seung-Yeob;Rim, Min-Joong;Kang, Chung G.;Yeh, Choong-Il;Ahn, Jae-Young
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.38B no.5
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    • pp.328-336
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    • 2013
  • One of the important processes in device-to-device communication is the discovery of proximate devices. In order to perform precise discovery of devices, the distance information among all the device pairs should be gathered by each device sending a discovery signal in turn and the other devices receiving the signal. However, periodic discovery signal transmission by every device might require too long discovery period or too large resource for discovery. Above all, some discovery information might be lost due to several practical reasons and it may take substantial amount of time to obtain all the necessary information. In this paper, we propose a proximate-device-discovery method using partial discovery information in order to reduce the resource for discovery and support the cases in which some discovery information can be lost. We also discuss discovery probabilities with partial discovery information.