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신현호,윤상옥,김신,황인준,Shin, Hyunho,Yoon, Sang-Ok,Kim, Shin,Hwang, Injoon 한국세라믹학회 2013 한국세라믹학회지 Vol.50 No.3
The effect of a $WO_3$ or $Ga_2O_3$ addition on the densification, phase evolution, optical reflectance, and elastic and dielectric properties of $Y_2O_3$-doped AlN ceramics sintered at $1800^{\circ}C$ for 3 h is investigated. The investigated compositions of the additives are 4.5 wt% $Y_2O_3$ (YA), 3.5 wt% $Y_2O_3$-1.0 wt% $Ga_2O_3$ (YGA), and 3.5 wt% $Y_2O_3$-1.0 wt% $WO_3$ (YWA). $YAlO_3$ and $Y_4Al_2O_9$ form as the secondary phases in all of the investigated compositions, whereas $W_2B$ appears additionally in the YWA. In the YGA, Ga is detected in the AlN grains, indicating that the dissolution of $Ga_2O_3$ into the AlN lattice occurs. The addition of $WO_3$ blackens the specimen more significantly than that of $Ga_2O_3$ does. In all of the investigated specimens, the linear shrinkage and the apparent density are above 20 percent and in the range of 3.34-3.37 $g/cm^3$, respectively. The elastic modulus, Poisson's ratio, the dielectric constant, and the dielectric loss are in the ranges of 335-368 GPa, 0.146-0.237, 8.60-8.63, $2.65-3.95{\times}10^{-3}$, respectively. The sinterability and the properties of $Y_2O_3$-doped AlN ceramics are not much altered by the addition of $WO_3$ or $Ga_2O_3$.
제주특별자치도 만감류 재배 온실의 구조 실태 및 희망 규격 조사
신현호 ( Hyunho Shin ),최만권 ( Mankwon Choi ),조명환 ( Myeongwhan Cho ),권기범 ( Kibum Kweon ) 한국농공학회 2023 한국농공학회 학술대회초록집 Vol.2023 No.0
2021년 국내 만감류 온실의 재배면적은 4,340ha이다. 이 중 내륙지역의 재배면적은 전라남도 142ha, 전라북도 31ha, 경상남도 28ha, 경상북도 23ha 및 충청남도 11ha 등으로 258ha이고, 제주특별자치도의 재배면적은 4,082ha이다. 제주특별자치도는 94.1%로 가장 많은 비율을 차지하고 있다. 따라서 본 연구에서는 가장 많은 비율을 차지하고 있는 제주특별자치도의 만감류 재배 농가를 대상으로 재배 온실 규격과 희망 규격을 조사하였다. 그 조사 결과를 바탕으로 만감류 시설재배 시 적합한 비닐온실 모델 개발에 필요한 적정 규격을 선정하기 위한 기초 연구를 수행하였다. 조사 방법은 만감류 재배 농가를 직접 방문하여 실측과 면접조사를 수행하였다. 농가 조사 자료를 분석한 결과, 온실의 설치년도는 가장 최근인 2013년에 설치된 한 온실을 제외하고 1993년부터 2003년까지 다양하였다. 규격 범위는 폭 5.5m, 측고 3.0-3.7m 및 동고 4.2-4.8m이었다. 방문조사를 한 농가는 모두 연동 온실에서 만감류를 재배하고 있었다. 제주특별자치도의 기존 감귤 재배용 내재해형 온실 규격(08-감귤-1형)인 폭 5.5m, 측고 3.3m 및 동고 4.5m와 비교하면 폭과 동 형식은 동일하였고, 측고와 동고는 조사한 온실에 따라 차이를 보였다. 이러한 이유는 조사한 대부분의 온실이 감귤 재배용 온실 규격 등록 이전에 설치되었고, 설치될 당시에 제주특별자치도의 경우 지면 평탄화 과정 없이 지형에 따라 온실을 시공하여 차이가 나타난 것으로 판단하였다. 조사한 농가에서는 대부분 동당 종 방향으로 2그루씩 재식하였고, 재식간격(횡방향)은 2.5-3.7m이었다. 재식 간격은 농가별 과수의 수령 및 재배 방식 차이에 따른 것으로 판단되었다. 과수의 수고는 중방 높이에 따라 1.8-2.8m로 분석되었으며, 재배관리 및 작업의 편의성을 위하여 대부분의 농가에서 중방 높이로 제한하였다. 제주특별자치도의 농가가 희망하는 구조 규격은 풍속, 여름철 환기, 방재(농약살포) 및 작업환경(통로확보)을 고려하여 측고 2.5~3.8m, 동고 3.0~4.5m 및 폭 4.0~6.5m이었다. 그리고 제주특별자치도뿐만 아니라 이상 기후 등으로 내륙지역에서 만감류 재배면적이 증가하고 있어 내륙지역의 만감류 재배 농가 온실에 대한 추가 분석을 통해 구조 설계를 위한 규격 도출이 필요할 것으로 사료되었다.
신현호(HyunHo Shin) 한국외국어대학교 영미연구소 2014 영미연구 Vol.30 No.-
George Herbert, one of the metaphysical poets in the seventeenth century in England, tries to express the real meaning of divine love and grace through the consideration of his religious conflicts. The Temple, the only volume of Herbert's devotional poems, presents his process of religious maturity. The Temple, recognized by many critics as Herbert's spiritual autobiography, is the record of his religious experience and personal relationship with God. Herbert deals with the spiritual conflicts between his soul and God, the record of redemption, the restoration of his spiritual relation with God, and obedience to God's calling in The Temple. Herbert describes the steps of his sanctification in The Temple. Though he believes in God, Herbert expresses the conflicts between worldly temptation and religious duty. His conflicts caused by afflictions changes him into obedient attitude to the Lord by his religious self-recognition, and then he can enter the road of God's love. Herbert is finally convinced that God's grace and love always abides with him after he perceives himself as a wretched being, and that Christ's death is a sacrifice for man and His Salvation is secured by only God's grace and love. Herbert accepts God's calling with a humble bow. Herbert's religious experiences in The Temple are not confined within his personal ones but represent those of all Christians and are valuable to those who have no beliefs in God. In his short life, the evaluation on his poetry is being elevated. The main reason is in his sincere and serious attitude in expressing his religious experience. He tries to express his experience to help those who had a difficulty in leading a life due to the inner conflicts.
신현호(Hyunho Shin),김종봉(Jong-Bng Kim) 한국소성가공학회 2009 한국소성가공학회 학술대회 논문집 Vol.2009 No.10
A recently reported simple phenomenological constitutive model (SK) demonstrated comparable or better data description capability to/than one of the rigorous and physics-based models, the PTW model. The simple SK model is believed to be an efficient for practical applications where an extensive computation is needed, and can serve as a rigorous comparison standard for the development of a physics-based model.
The Irish Fairies in W. B. Yeats's Early Poems
Shin, HyunHo(신현호) 한국외국어대학교 영미연구소 2015 영미연구 Vol.35 No.-
The purpose of this paper is to offer a viewpoint of the early poems of William Butler Yeats, focusing on the Irish fairies. W. B. Yeats was enthralled with Celtic mythology and the world of fairy. Much of Yeats’s early poetry and writing alludes to the Celtic otherworld, idealistic world and it adds a wonderful depth and richness to much of his work. Included are “The Stolen Child,” “A Faey Song,” “The Hosting of the Sidhe,” and “The Wanderings of Oisin.” Yeats tried to provide the individual ideals or visions for the Irish by incorporating the elements of Celtic mythology and Irish folklore in his poetry. Yeats’s early poems by fairies depict the conflict between the real and the ideal world. Yeats attempts to transcend the troubles of the real world by leaving for the ideal world that is represented by an eternal fairyland beyond time and space. But because of his ideal world, which is dreamy and eternally beautiful as it may be, and is so remote from the real world, he cannot attain the harmony between the real and ideal world. He does not blindly fly to the fantasy world in order to escape reality, but he wants a balance between the two.