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      • KCI등재

        이중대역용 DGS 대역통과 여파기 설계 및 제작

        김갑기(Gab-Ki Kim) 한국정보기술학회 2014 한국정보기술학회논문지 Vol.12 No.9

        In this paper, WLAN and LTE-A band, dual-band band-pass filter that can be used to design and implement. Proposed structure of the DGS is applied symmetrically to improve the bandwidth of the improved properties as Skirt and unnecessary harmonic components are removed. The filter was made to the size of 20mm×20mm by using a FR-4 substrate. CST Microwave studio 2012 simulation program is used in the simulation result was passband is 2.4 ~ 2.69GHz, return loss of -20dB or less satisfactory results. During the actual production passband is 2.37 ~ 2.72GHz, return loss of -15dB less than about 350MHz were obtained by a bandwidth. This is a numerical value that satisfies the bandwidth of LTE-Advanced and WLAN. Simulation results with little difference is the conductor loss and the connector is under the influence of the loss analysis possible.

      • KCI등재

        AIS를 이용한 선박 안전운항 경보 시스템 개발

        김갑기(Gab-Ki Kim) 한국정보기술학회 2013 한국정보기술학회논문지 Vol.11 No.4

        In this paper, we developed a system fusion with AIS(Automatic Identification System) equipment for sailing safety device, which can detect environmental changes, such as fog maritime climate, heavy rainfall and can tell to crew. A developed system was fabricated transceiver module using electromagnetic waves. It fused with transceiver module and the sensing part and by the use of only one receive sensitivity it has a low-power, and miniaturization. The basis of the experiment of the developed device is to check an audible alarm and warning announcement could be sent when an occurred artificial fogs within 500m to set arbitrarily obtained humidity above 75%, then if fog could encounter above set value. Designed device is incorporated into the AIS device, and checks ship in AIS device which can know correct identify of the sailing safety alarm system, and can take advantage of narrow space of the vessel, therefore it can respond quickly to accidents.

      • KCI등재

        시품격론(詩品格論)으로서의 정종(正宗)ㆍ대가론(大家論)

        김갑기 ( Kim Gab-ki ) 동국대학교 한국문학연구소 2008 한국문학연구 Vol.0 No.34

        본고는 시품격론이라 할 정종ㆍ대가론의 소원(溯源)과 수용 과정, 그리고 그 우열론이라는 다소 낯설고 난삽한 몇몇 과제를 재점검함으로써 17세기 중ㆍ후반의 다양한 우리 시학사 정리는 물론, 이후 성당 시학의 실천에 이어, 실학ㆍ평민문학으로의 발전 과정 및 천기론으로 무장하므로 자못 『시경』시에 비견한 진시(眞詩), 곧 여항문학으로 발전해 가는 시학사의 계경을 이해함에 일조하고자 한다. 먼저 정종ㆍ대가론의 시원이 고병의 『당시품휘』에서 비롯되었으며, 이는 남송을 대표하는 시론가 ‘엄우의 『창량시화』에서 유래되었다’ 하고, 『창랑시화』와 『당시품휘』를 통해 강서시파에 대한 의고문풍의 필요성과 수용과정을 논증했다. 특히 엄우의 ‘선으로 시를 논以禪喩詩論’하며 ‘묘오(妙悟)와 ‘입신론(入神論)’이 고병의 『당시품휘』에서 이백의 정종론으로, 한위(漢魏)의 법도와 육조(六朝)의 재주를 집대성한 두보의 대가론으로 정착되었음을 논증했다. 이어 정종ㆍ대가 우열론에서 「이ㆍ두우열론」은 엄우 및 왕정지가 불가라 했으나, 엄우는 암묵적으로 이백을 좌단(左袒)한 정황이 있음을 밝혔으나, 워낙 문풍과 기호에 따르는 바 제가의 각설을 주로 요약했다. 우리 한 시비평의 경우 정종ㆍ대가론의 전개 과정을 약술하고, 김득신의 「평호소지석시론」으로 총론하되, 관각삼걸의 몇 작품과 삼당의 몇 작품을 예시하여 그 ‘웅혼(雄渾)한 미감’과 철저한 용사성 및 위미 염려성(萎靡 艶麗性)이 석주 권필 시의 ‘전고ㆍ용사의 작흔(作痕)은 물론, 시어의 조탁도, 인위적 과장도 없는 진실한 사실적 비유가 현장성을 배가하므로 정종의 시격임’을 논증하고자 했다. 그러므로 석주야말로 관각삼걸의 강서시파적 특질은 물론, 삼당의 위미ㆍ염려로부터 17세기 조선사를 성당시풍에로 가장 근사하게 접근시킨 정종으로, 이후 18세기로부터 팽배하는 무실적 사실문학, 나아가 천기를 근간으로 한 중인문학의 계경(階徑)을 제시했다고 결론했다. This paper compares the two different grades of Chinese Poem, Jeong-jong(定宗) and Dae-ga(大家). This comparison is based on Uem-woo(嚴羽)'s Changrang's poetic argumnt(滄浪詩話). Uem-woo thought that poems in Song-Dynast(宋代) are not pure because they are too logical and full of misappropriating. He insisted to learn poems of Dang age, which are warmhearted and natural. And emphasizing the likeliness of the Zen and Poems, he pointed that the ultimate aim of both is spiritual awakening(妙悟). He appraised Li-bac & Tu-bo(李白ㆍ杜甫) as highest poets who succeeded in the world through the spiritual awakening In Mwung age(明) Ko-Beoung(高棅) categorized 620 poets' 5,769 poems in Dang age into 9 grades in his book, The Comment on a poems of Dang(唐詩品彙). Li-bac was the only best poet named as Jeong-jong(定宗) and Tu-bo was the second, and named as Dae-ga(大家). Kim Deuk-sin(金得臣) tried this kind of distinction among Korean traditional poets, and Jeung(鄭士龍) No(盧守愼) Hoang (黃廷彧) were named as Dae-ga(大家), Kyun(權韠) was Jeong-jong(正宗). The characteristic of Jeong-jong's(正宗) poem is the poetic inspiration with simple and unartificial dictions, and Dae-ga's(大家) poem shows a vigorous style using authentic precedents(典故).

      • KCI등재

        LTE/Wibro를 이용한 해상통신 안테나 설계

        이광복(Gwang-Bok Lee),김갑기(Gab-Ki Kim) 한국정보기술학회 2016 한국정보기술학회논문지 Vol.14 No.12

        In this paper, we designed and fabricated a monopole microstrip antenna for LTE/Wibro for maritime communication. FR of the substrate is 4 and the size is 50mm×100mm, By using simple structure with monopole antenna, it is designed to be used in two bandwidth of LTE/Wibro, 2.1GHz and 2.3GHz. To obtain the optimized parameters, we simulated the antenna design program CST 2010 and designed the antenna using the obtained numerical values. The simulated results of the designed antenna showed resonance in dual band of 2.1GHz and 2.3GHz and the return loss to input was able to communicate in resonant frequency band below -10dB. VSWR is 1.2 at 2.1GHz and 1.1 at 2.3GHz respectively. However, it is confirmed that the return loss of the antenna between 2.1GHz and 2.3GHz resonates below -10dB, but the frequency is obviously dropped in a specific frequency band. If the filter is added later, the problem will be resolved. They may be applied into many areas such as mobile antennas and marine antennas.

      • KCI등재
      • 紫霞 申緯의 詠物詩攷 : 달을 읊은 시[詠月詩]를 중심으로

        金甲起 청주대학교 학술연구소 2004 淸大學術論集 Vol.2 No.-

        The purpose of this essay is to study the "moon" of Ja-Ha's poetry in the some works of poetry of nature-beings, which is a fragmentary essay by means of the material in moon. 1. It is composed of the material of moon in the poetry-literature. Generally, in Ja-Ha's poetry the differences between the types of the motif and the characteristics are discussed. 2. In fact, the traditional image of moon is a subject matter- the motif of poetry is that a loyalist is to adore for the master. Therefore, it is a common that a villainous retainer should be compared to a drifting cloud. 3. But the moon in Ja-Ha's poetry is not dealt with nature itself, that is the objective correlative The true character of bright nature-beings is not related to the strain in traditional custom. This is divided into three viewpoints: ① Pride as the descendant from Sin, Sung geum(877-927), the symbol of loyalists. ② Cordial favor of successive loyalists ③ It consists in the positive protection of the prime minister, Kim, Jo Sun but the direct reason is to escape from the restriction. They are based upon the optimistic nature and the positive life philosophy.. 4. A rhetorical distinctive of Ja-Ha's poetry are divided into three; ① The use of authentic precedent can be seen some variety in Ja-Ha's poetry. ② To deny, confirm, and a cross-question can be seen in a lot of Ja-Ha's poetry. ③ The sensibility is not sentiment but phanoporia in Ja-Ha's poetry. In conclusion, According to the poetry, calligraphy and oriental painting, the sensuous tend of Ja-Ha's poetry can be attained the highest perfection of language.

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