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항공기용 다기능 능동위상배열 레이더 임무 스케줄링 기법 비교 분석
조두현,장대성,최한림 한국항공우주학회 2013 한국항공우주학회 학술발표회 논문집 Vol.2013 No.4
본 논문에서는 항공기용 다기능 레이더 임무 스케줄링에서 임무들의 지연시간 감소를 위해 휴리스틱 알고리즘과 유전 알고리즘, 그리고 분기 한정법을 이용한 알고리즘을 제안하였다. 알고리즘은 임무들에 할당된 특성값 중 한 가지 혹은 여러 가지를 이용하여 임무 처리 순서를 결정한다. 탐색과 표적 추적 임무에 대한 시뮬레이션을 수행하였고, 이를 통해 각 알고리즘을 비교하고 분석하였다. In this paper, Heuristic algorithms, Genetic algorithm, and Branch-and-Bound algorithm are suggested to reduce the tardiness of tasks for airborne multifunction radar task scheduling. Each algorithms use one or several assigned values in the tasks to decide the sequence of tasks. Simulations for searching and tracking the targets were performed. From the simulations, each algorithms were compared and analysed.
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Nanometer-scale etching of CoFeB thin films using pulse-modulated high density plasma
조두현,이재용,최재상,정지원 한국물리학회 2018 Current Applied Physics Vol.18 No.9
Pulse-modulated inductively coupled plasma reactive ion etching of nanometer-scale patterned CoFeB thin films was performed in CH4/O2/Ar gas mixture. As the pulse on-off duty ratio decreased, the etch selectivity of CoFeB/ TiN slightly increased and the etch profiles were improved. Moreover, the etch selectivity of the CoFeB films and the etch profiles were improved with the increase in the pulse frequency of the plasma. X-ray photoelectron spectroscopy revealed that during the pulse-modulated etching in the CH4/O2/Ar gas mixture, some polymeric layers were formed on the CoFeB films, which helped prevent the lateral etching and increased the etch selectivity. Consequently, nanometer-scale etching of CoFeB thin films patterned with TiN hard masks could be achieved using pulsed-modulated plasma in CH4/O2/Ar gas mixture.
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韓國女流漢詩選 考察 : 海東詩選을 中心으로 Centering on the Hae-dong Selected Poems
曺斗鉉 圓光大學校 1988 論文集 Vol.22 No.1
This thesis examined, appresciated, and criticized the content of poems according to the writers' status centering on the women's Chinese poems in Hae-dong Selected Poems editted by Cho Jang Seob, who is a scholar in the time of King Sunjo, the late Lee Dynasty. On the basis on it, this thesis arranged the general trends of women's poems in the social classes according to the periodical circumstances. Hae-dong Selected Poems is a vast garland, which colledts and records about 2,300 pieces of Chines poems of all levels of society from Shinla, Koryu to King Sunjo(the 23rd). Among them, 171 pieces are written by such ladies of dignitary as Shin-saim-dang, Heo-nanseolhun, Kisaengs as Hwang-jini, Lee-maechang, concubines, common country women, nuns, and maidservants and so on. The time when the women's Chinese poems are created is after the middle period of Lee Dynasty in 16th century. The periodical circumstances and the women's status are as follows. The society was furbulent and the people's lives are poor because of the political changes and war. But on the contrary, in the aspect of culture, Hangeul culture was developed greatly after the creation of Hunminjeongeum, and Chinese classics were developed by way of the continuance of classical examination system and the participation of the common people who awoke the self-consciousness through Hangeul. In those days women were neglected in the social role as a human being and stick at the household labor and waining on men because not only of the dominant social common idea of the predominance of men over women but the lack of education. After the consonderation on the Chinese poems which is left by women poets in their own positions and the phases of those times, the result are as follows. 1. The works of the ladies of dignitary speak for the women's difficulties of that time through the ethical and human sorrows and sufferings such as filial duty, ancestor worship, solitude in their husbands absences and appreciation of nature. 2. The works of kisaeng express the joys and sorrows of their lives, emotions of love and separation well depending on the nature. 3. The works of concubines are similar to those of kisaengs' in general, and are strongly express the desire to have entire possessio of her lover. 4. The Chinese poems of egneral country women are similar to those of ordinary life impressions such as instructive content as well as love, anxiety and appreciation of nature. 5. As a result of considering the nuns' and maidservants' Chinese poems, the number of poems are a few but worthy of being representative of their classes. The nuns wrote the self-sacrificial prayers of poems to save all creatures, but maidservants expressed the conflicts between classes of the times that they couldn't love their own ways because of their status. The facts that were found as a result of considering women's Chinese poems on the basis of their classes are the merits of Korean women: they maintained the beauty, human sincerity and social capacity as women in the worst case of self-contempt and unconditional submission. These are the greatest pride and would be an initial manure to women and our culture today. We expect the rediscovery of their exellent life values through the profound study of our women's Chinese poems in future.
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