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윤기호 호남대학교 산업기술연구소 2000 산업기술연구논문집 Vol.8 No.-
본 연구에서는 교통 정보를 무선을 이용하여 송수신할 수 있도록 경제적이고 크기가 작은 ITS용 5.8GHz RF Ttransceiver 모듈을 연구하였다. 먼저 송수신 Link를 최적 설계하였고 이를 토대로 H/W를 구현하였다. 구현된 모듈은 차량용 장치(OBU)는 23dBm의 출력을, 로변용 장치(RSU)는 10dBm의 송신 출력을 갖는다. 데이터 속도는 2.048Mbps로 각종 교통정보를 충분히 전송할 수 있다. 특히 국부 발진신호는 PCS 이동통신 시스템에서 많이 사용되는 PLL 모듈을 활용하여 전기적인 특성의 신뢰성을 향상시키는 한편 전체 국부발진회로의 크기를 줄이고 가격을 절감시키는 효과를 얻었다. 개발된 제품은 한국통신에서 ITS의 시범서비스에 사용될 예정이다. In this paper, 5.8GHz RF transceiver module for Intelligent transportation system(ITS) is described. This module is to target cost reduction as well as realizing economic system. Hardware has been implemented through link budgetary for transmitting path and receiving path. The implemented module has 23 dbm output power for Road side unit(RSU) and 10dBm for On board unit(OBU), respectively. Data speed of 2.048Mbps enable a vehicle to communicate traffic data fully. Especially, local oscillator has been implemented by the PLL module which had been used in PCS mobile handphone. This scheme has made the overall circuit size smaller and cost to be competitive.
ITS RF 송수신기용 주파수합성기의 설계에 관한 연구
윤기호 호남대학교 정보통신연구소 2000 정보통신연구 Vol.10 No.-
In this paper, frequency synthesizer module of 5.8GHz RF transceiver for intelligent transportation system(ITS) is described. This module is to target cost reduction as well as realizing economic system. 5.8GHz local signal is obtained from tripler followed by band pass filter, using existing dual PLL module of PCS phone. The implemented module has -95dBc minimum at 10KHz offset and -120dBc minimum at 2.0MHz for 380MHz Oscillator, -97dBc minimum at 10KHz offset and -120dBc minimum at 2.0MHz for 1,796MHz Oscillator, respectively. These phase noise enable overall transceivers communicate with data speed of 2.048Mbps.
윤기호 호남대학교 1997 호남대학교 학술논문집 Vol.18 No.4
In this paper, the implementation of Power Amplifier combined with the dielectric transmitting filter moved from exiting Duplexer for PCS phone is described. The dielectric band rejection filter is located between two GaSa RETs to attenuate spurious and noises in the receiveing frequency band. In addition, The low pass filter in the output stage of Power FET is enforced to reject harmonic components of transmitting signals. To reduce module size, 1005 chip components are mounted on 4-layer board. As a result, the module size is as small as 0.7CC(16×14.5×3mm³). The power amplifier module has achived ACPR performace with 2 to 3dB margin from IS-95 requirement at the output power level, 21dBm. Owing to dielectric band rejection filter and harmonic rejection filter, attenuation is 47dB at receiving frequency band(1840~1870MHz) and 2nd and 3rd harmonics are rejected to be 62dBc and 65dBc, respectively. By the way, comparing with conventional power amplifier, about 50mA of total current is saved because maximum transmitting power is decreased, which means that battery life is going to be extended.
業說의 始原과 變遷에 관한 小考 : Its Origin & Interpretation in Jainism
尹起鳳 대진대학교 1993 大眞論叢 Vol.1 No.-
The main purpose of this study is in the examination of the Karma theory. The theory of Karma has played a very important role in philosophical, religious discourses and in the lives of Hindu, for over 4000 years. Karma is an extension of the vedic conception of rta and istapurta (ChⅡ). Rta in the thought of the Rg-Veda is the principle of Cosmic order which controls, unifies all phenomena. The origin of Karma is also traced to the ritualistic tradion of the Vedic Indians to ista purta. Dosa is the Rg-Veda (ChⅡ-2) is understood as the violation of the moral law and as ritualistic pollution. Karma is the apprehension and expression of the moral order of the universe and dosa is an expression of man's need for purity and the supreme good. The Jain theory of Karma (Chⅲ) is the most comprehensive of all in providing us with details of Karmic processes of its operation. Like Buddhism, Jainism also does not believe in the existence of a monotheistic God. What distinguishes Jaina conception of Karma from ancient India is its conception of Karma from ancient India is its conception of Karma as material As I descrived in outline above, Karma is in the center of all the conception in the Jaina, and Buddhism.
변요소에의한 유한요소법의 도파관내 불연속특성에 관한 연구
윤기호 호남대학교 정보통신연구소 1997 정보통신연구 Vol.6 No.-
공동 공진기의 공진주파수를 계산하고 도파관에서 불연속 특성을 분석하기위해 변요소(edge element)에 기초한 유한요소법이 제시된다. 이러한 유한 요소법은 기행해(spurious solutions)를 발생하지 않고 임의 형태의 전송선로에서 불연속을 이루는 어떠한 형태의 비균질 매질도 해석될 수 있다. 이를 위해 임의형태의 공동 공진기가 도입되어 기존 방식에 의한 논문들과 비교하여 정확성을 입증하며, 도파관내에 위치하는 임의의 형태를 갖는 비균질 유전체가 그 크기와 유전율에 따라 여파기의 한 요소로서의 역할을 가지고 있음을 보여준다. 이때 요소의 분할에 이용되는 사면체 변요소와 육면체 변요소가 수치해석의 정확도를 높이기위해 적절히 혼합되어 사용된다. An edge-based finite element method for computing the resonance frequency of cavity resonator and analyzing the propagation characteristics of a waveguide discontinuities is presented. it is seen that a arbitrarily shaped inhomogeneous dielectric materials located in waveguide can work as an filter element according to their size and permittivity. Both tetrahedral edge elements and hexahedral edge elements are properly mixed at the discontinuity section to improve the accuracy of the numerical method.
윤애화,이지영,임순희,김현정,안장순 全南大學校 農業科學技術硏究所 1998 農業科學技術硏究 Vol.33 No.-
토란의 기지 shoot를 암배양하여 절간이 신장한 황하경을 얻고 이황하경의 절편을 계대배양하여 기내증식을 시도하였다. 황하경은 NAA 0.2mg/ℓ가 첨가된 배지에서 가장 길게 신장하였다. 황하경은 자구형성형이 모구배대형보다 길게 신장하였다. 호르몬이 첨가된 거의 모든 배지에서 protocorm이 형성되었으나 0.2mg/ℓ NAA + 0.2mg/ℓ BA를 첨가한 배지에서 특히 많이 형성되었고 이 protocorm을 MS기본 배지에 옮겼을 때 8.5%의 재분화율을 보였다. Etiolated stems with elongated internodes were obtained from the in vitro culture of shoots of Colocasia esculenta schout under dark condition and plant differntiation was achived by subculturing the ethiolated stem segments. The etiolated stems elongates better on the media containing 0.2mg/ℓNAA than of those lacking it. Subculture of the etiolated stem segments produced protocorm-like structures in all the media examined. The medium containing 0.2mg/ℓNAA and 0.2mg/ℓBA produced the higest number of protocorm-like structure, which regenerated into plantets at 85% when transferred to phytohormone-free MS medium.
尹起鳳 대진대학교 1993 大眞論叢 Vol.1 No.-
Theisticand atheistic philosophies in India have often been mixed up with theological discussions which throw some light on the existence and nature of God. The idea of God is almost universal and instinctive also in India. India have a variety of pictures of God. This variety is easily intelligible when we realise that each religious genius spells out the mystery of God. In Rg-Veda these descriptions of God often conflict with one another But these descriptions depends on the concept of lower self and the concept of the Supreme Self in B.G. which may be outlined as below. 1) The lower self and the Supreme Self are both eternal. 2) The Supreme Self is an Infinite Unit. 3) The Supreme Self in the universe is omnipresent 4) Within a limited range, the lower self is allowed to function. 5) The Supreme Self is perfect in all respects. In this structure, Conclusion is that The formula 『Sat』alone could not have distingushed 'Him' from the two other entities that 『Cit』. Sat-Cit would confuse him with the souls, as they both 'are and know' Sat-Cit-anand brings out both his similarities with and points of difference from souls and matter.
윤기봉,유승종 대진대학교 1995 大眞論叢 Vol.3 No.-
The main purpose of this study is in the examination of concept of Hu-Chun-Gae-Byuk. The problem of dukkha and diease has alway played an important part in the attitude of Dae Soon and Buddhism. One of the Cardinal and noble truths of Buddhism was that everything was sorrow. And all regrets was of moral origin and the culmination of morality is in theory of Hae-Won. Man is asked to proceed on the course of moral struggles for the removal of diease and sorrow. And so the object of actions and feelings, Charity are the stimulation of moral progress. Conclusionally the concept of Hu-Chun-Gae-Byuk define in terms of its highest ideals and perfection of its moral culture. in Dae Soon thoughts.
독일의 개정 임대차법에 관한 연구 : 주택임대차에 관한 규정을 중심으로 Zum Wohnraummietrecht
윤기택,김종현 청주대학교 학술연구소 2004 淸大學術論集 Vol.4 No.-
Die deutsche Mietrechtsreform fu¨hrt durch die Zusammenfassung des bisher in verschiedenen Gesetzen geregelten mietrechtlichen Vorschriften im Bu¨rgerlichen Gesetzbuch (BGB) und ihre jetzt u¨bersichtliche Gliederung insbesondere im Bereich der Wohnraummiete zu einer erheblichen Vereinfachung fu¨r die Betroffenen. Daneben entha¨lt das im BGB zusammengefaβte Wohnraummietrecht aber auch wichtige inhaltliche A¨nderungen. Wa¨hrend der Mieterschutz an einigen Stellen ausgebaut wird, wird die Vertragsfreiheit gesta¨rkt. Das im deutschen BGB zusammengefaβte private Mietrecht finden sich jetzt in den §§ 535 ff. BGB. Eingeleitet werden sie durch allgemeine Vorschriften fu¨r Mietverha¨ltnisse, also Vorschriften, die unabha¨ngig von der Art der gemieteten Sache fu¨r alle Arten von Mietverha¨ltnissen gelten. Daran anschliβend gliedern sich die Vorschriften u¨ber Wohnraummiete, und schlieβlich u¨ber andere Sache (z.B. Gescha¨ftsraummiete). Das deutsche Wohnraummietrecht ist die Vorschriften u¨ber die Miete und Betriebskosten ausfu¨hrlich geregelt. Fu¨r frei finanzierte Wohnungen werden die Mieten bei Abschluβ des Mietvertrages und bei spa¨teren Mieterho¨hungen grundsa¨tzlich frei vereinbart. Falls Vermieter und Mieter Wohnungen sich aber nicht auf eine frei vereinbarte Mieterho¨hung einigen, kann der Vermieter eine gerechtfertigte Mieterho¨hung nach dem Vergleichsmietensystem durchsetzen. Betriebskosten bleiben insoweit auβer Betracht. Bei der Mieterho¨hung wegen gestiegener Vergleichsmiete darf er die Miete aber innerhalb von 3 Jahren nur maximal 20% erho¨hen. Hat der Mieter das Mieterho¨hungsverlangen erhalten, kann er das Mietverha¨ltnis schriftlich ku¨ndigen. Nach einer vorgesehenen Modernizierung dart der Vermieter die Miete auch erho¨hen. Der Mieter hat dabei ebenfalls ein spezielles Ku¨ndigungsrecht. Bei der Abrechnung der Betriebskosten bringt die Mietrechtsreform durch die neue Regelung mehr Klarheit. Nach dem deutschen Wohnraummietrecht endet ein Mietverha¨ltnis auf bestimmte Zeit mit Ablauf der vertraglich vereinbarten Mietzeit, und ein Mietverha¨ltnis auf unbestimmte Zeit durch eine wirksame Ku¨ndigung nach Abaluf der Ku¨ndigungsfrist. Hier gibt es verschiedene Ku¨nigungsarten. Das Gesetz unterscheidet zwischen ordentlicher und auβerordentlicher Ku¨ndigung (also die fristlose Ku¨ndigung). Bei der ordentlichen Ku¨ndigung kann der Vermieter nur dann ku¨ndigen, wenn er ein berechtigtes Interesse an der Beendigung des Mietverha¨ltnisses hat. Diese Ku¨ndigung des Vermieter muβ der Mieter nicht in jedem Fall hinnehmen. Vielmehr kann er unter bestimmten Umsta¨nde widersprechen und die Fortsetzung des Mietverha¨ltnisse verlangen. Auβerdem kann der Vermieter oder der Mieter das Mietverha¨ltnis fristlos ku¨ndigen, wenn sich ein Vertragspartner so schwerwiegende Vertragsverletzungen zuschulden kommen la¨sst, daβ dem underen Teil die Fortsetzung des Mietverha¨ltnisses nicht zugemutet werden kann. Zwischen deutschem und koreanischem Wohnraummietrecht bestehen die rechtsvergleichend bemerkenswerten Unterschiede im Hinblick auf das Mieterho¨hungsverlangen und das Eintrittsrechtbei Tod des Mieters. Wa¨hrend nach deutschem Wohnraummietrecht fu¨r die Mieterho¨hung sog. die ortsu¨bliche Vergleichsmiete (und auch sog. die Kappungsgrenze) in Betracht kommt, wird im koreanischen Wohnraummietrecht nur prozentuale Obergrenze beru¨cksichigt. Zudem hat im deutschen Mietrecht der Vermieter einen Anspruch auf Zustimmung zur Mieterho¨hung bis zur ortsu¨blichen Vergleichsmiete. Dagegen wird in Korea dieser einfach als Gestaltungsrecht angesehen. Fu¨hrt in Deutschlund der Mieter mit seinem Lebenspartner einen gemeinsamen Haushalt, so tritt mit dem Tod des Mieters der Lebenspartner in das Mietverha¨ltnis ein. Wenn er nicht eintreten will, so wird es mit den Erben des Mieters fortgefu¨hrt. Aber nach dem koreanischen Wohnraummietrecht treten in diesem Fall der Lebenspartner und den Erben des Mieters gemeinsam ein.