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孫鉉,金基完 경북대학교 공과대학 1976 工大硏究誌 Vol.5 No.-
In accordance with CCIR recommendation of the XIth plenary assembly which was held at Oslo in 1966, the levels of baseband loading were adopted to be -15+10 LogN [dBmO] for FDM-SSB communication system. The baseband loading which is equivalent to white noise levels on the composite multi-channels, has been increased due to the high input levels of special circuits of the latest military FDM-SSB communication system (ie. tone pulse, AUTODIN, AUTOVON, AUTOSEVOCOM etc.). It is for now evident that the CCIR recommended level is inadequate to met the needs of the military communication system. This paper will study the proposed equivalent white noise level on the military communication system, compared to the recommended value by CCIR.
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孫鉉,李大寧 경북대학교 공과대학 1983 工大硏究誌 Vol.12 No.-
Fabricated a Hood which was adhered polyurethan form impregnated carbon powder in and loaded on the parabolic antenna side. Found the Hood absorbed sidelobes of microwave radiation energy from 2 dB to 9 dB for E-plane pattern and from 4 dB to 15 dB for H-plane pattern at d=4/3λ
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달의 과학, 달의 젠더 ― 달에 관한 여성 신화의 낭만적 변용과 과학의 안락사
손현 전남대학교 인문학연구소 2020 용봉인문논총 Vol.- No.57
Science as a new bearer of empirical truth has played an important role in reshaping our understanding of the world since the modern era. Supposing that the notion of gender would also have been under the influence of modern science, this essay examines how science and gender is interrelated with a focus on symbolic representation of the moon. The moon is universally represented to be feminine, while Galileo, the father of modern science, discovered that the lunar surface is neither even nor polished, that is, by implication, the moon is not feminine. I read a Homeric hymn and a poem by Sappho in Ancient Greece and the Romantic poem, “Endymion,” by John Keats in modern period in a comparative perspective to see how the gender representation of the moon is altered after the scientific revolution. Defining the symbolic meaning of the moon goddess as “the Thing,” the impossible ultimate, borrowing the Lacanian interpretation of the story of Artemis and Actaeon, I reveal that the moon myth allows the man in a objectifying position of the moon to write epic hymns and the woman in isolation from the objectifying process to write lyrics. Noting that the advent of empirical science caused the separation of matter and spirit and so intensified internality in human consciousness, I argue that, as a result of such a change in consciousness, the Romantic literature is characteristic in letting internalized male poets write lyrics and highlighting feminine beauty rather than feminine divinity and fatality of the beauty in representation of the moon. Thus I reach two conclusions: first, gender difference as a position in the symbolic structure is unsubstantial but real in the sense that one ever speaks either as a man or a woman; second, the Romantic protean transformation of the lunar myth proves science to be powerless to deconstruction of gender and the male subjectivity to be so ticklish. 본고는 근대 이후 진리의 중요한 담지자로 부상한 과학이 인간의 젠더(gender) 개념에 영향을 미쳤을 것임을 전제하고 과학과 젠더의 관계를 달의 언어적 재현을 매개로 살펴본다. 달은 신화적 상상력에서 인류 보편적으로 여성화된 자연물이었다. 반면 17세기 초 근대과학자 갈릴레이는 달 표면이 울퉁불퉁하다는 사실을 밝혔는데 이는 달이 여성적이지 않다는 말과 동의어적이었다. 본고는 달에 관한 근대과학적 발견이 달의 젠더에 미친 영향을 신화의 반영물인 문학, 특히 근대과학 이전과 이후의 지점으로 고대그리스 문학과 근대 낭만주의 문학을 중심으로 살펴본다. 필자는 달의 신화에서 여성성이 상징하는 바를 라캉의 해석을 빌어 인간으로서는 결코 포착할 수 없는 궁극적 진리로서의 “그것”으로 정의하고 그런 신화가 고대그리스 문학에서 남성적인 서사시와 여성적인 서정시에 반영됨을 살핀다. 근대과학의 출현이후 의식은 자기의식화 하는 경향을 보이는데 이에 따라 달의 신화가 낭만주의 문학에서 변용한 양상으로, 첫째, 신화는 집단적인 서사시 형식에서는 사라진 대신 남성 주체의 개인적 자아를 표현하는 개인적 상징으로 서정시 형식에서 나타나며, 둘째, 달의 신성성 대신 여성성이 강조되며, 셋째, 달의 여성성이 치명성의 속성을 동반하는 특징이 있음을 밝힌다. 이런 논의를 통해 본고는 성차는 사회역사적인 결과물로서 비실체적이라면 상징질서 내에서 우리는 누구나 남자 아니면 여자로서 말할 수밖에 없다는 점에서 해체 불가능한 실재임을 주장한다. 다만 과학의 충격에도 달의 여성성이 사라지지 않고 변용을 통해 실재하는 것은 과학의 이성적 지배력이 안락사하는 것이면서 남성욕망의 변덕스러운 가벼움이 드러나는 현상이다.
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손현 한국생화학분자생물학회 2003 생화학분자생물학회 소식 Vol.23 No.1
Neural stem cells are present both in the developing nervous system and in the adult nervous system of all mammals, including humans. Little is known, however, about the extent to which stem cells in adults can give rise to new neurons. There is extensive evidence indicating that new neurons are generated in the dentate gyrus of the adult mammalian hippocampus, a region of the brain that is important for learning and memory. Several studies have now shown that enriched environment, voluntary movement enhance the survival of newly generated cells in the hippocampus. Exposure to stressful experiences, glucocorticoids decreases the numbers of new neurons in the dentate gyrus; this occurs not by altering the survival of new cells but by downregulating cell proliferation. Now that it has been established that new neurons are in fact added to the adult brain, the question becomes what are their functions. Adult neurogenesis has been offered as a possible key to understanding and even treating such phenomena as depression, Alzheimer's disease, and schizophrenia. It would be wonderful if further study of adult neurogenesis could shed light on any or all of these CNS conditions.
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손현,정광욱,박진택 경북대학교 전자기술연구소 1992 電子技術硏究誌 Vol.13 No.1
The theoretical analysis of microstrip slot antenna fed by a strip transmission line can be obtained applying transmission line theory with a discontinuity of the slot. The theoretical results are in close agreement with experimental observations.
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양면 유전체 슬랩 내부에 유한한 주기슬롯을 가지는 도체평판으로부터 표면파 산란
손현,김중표,배준석 경북대학교 전자기술연구소 2000 電子技術硏究誌 Vol.21 No.1
The surface wave scattering from the conducting plane with finite periodic slots in the double-sided dielectric slab is considered. A Fourier transform technique is used to express the scattered fields outside slot regions. The Fields within slot regions are expressed as a summation of the parallel plate waveguide TE modes. The boundary conditions are enforced on the interface of the each region to obtain simultaneous equations. The behaviors of the time-average powers of the each region are examined as the slot width, thickness of the dielectric, permittivity, period, and finite slot number vary. Using the power conservation law assures of computational accuracy.
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