위성/이동 통신 시스템에서의 가상화 기술 동향

이승규,이준환,이문식,S.Q. Lee,J.H. Lee,M.S. Lee 한국전자통신연구원 2024 전자통신동향분석 Vol.39 No.1

Virtualization technology supports the execution of software unrelated to the hardware environment through the decoupling of software and hardware. Additionally, it enables network slicing, allowing one physical device to be divided and used by a function or service by supporting sharing with isolation. Virtualization enables flexible platform use, allowing a variety of services to be launched without changes or additions to the hardware platform. We describe virtualization technology trends in satellite/mobile communication systems. Basic concepts and technical definitions are included, and the current status of research and development by domestic and foreign organizations, including the Electronics and Telecommunications Research Institute, is analyzed. Finally, future prospects and implications are discussed.

측정방법에 따른 국내산 산양유의 체세포수 비교

이승규,김민경,이연정,정석근,오미화,김동훈,박광욱,이완규,함준상,Lee, Seung-Gyu,Kim, Min-Kyung,Lee, Yeon-Jeong,Jeong, Seok-Geun,Oh, Mi-Hwa,Kim, Dong-Hun,Park, Kwang-Wook,Lee, Wan-Kyu,Ham, Jun-Sang 한국축산식품학회 2010 한국축산식품학회지 Vol.30 No.1

산양유의 체세포수는 측정방법에 따라 많은 차이가 보고되고 있으나 국제적인 표준방법으로 pyronin Y-methyl green stain에 의한 직접현미경법이 사용되고 있다. 8개 목장 총 48개 시료를 pyronin Y-methyl green stain에 의한 직접검경법, 국립축산과학원에서 보유중인 ADAM-SCC, 충청북도 축산위생연구소에서 보유중인 Somacount 500으로 측정하여 결과를 비교하였다. Pyronin Y-methyl green stain 측정시 전체 평균은 $7.3{\times}10^5$ cells/mL인 반면 ADAMSCC와 Somacaount 500은 각각 $4.9{\times}10^5$과 $11.6{\times}10^5$ cells/mL로 나타나 과소 또는 과대평가되는 결과를 보였다. 직접현미경법과 ADAM-SCC또는 Somacaount 500과의 상관계수는 각각 0.0332 또는 0.2285로 매우 낮으며 장비간의 상관계수도 0.1552로 매우 낮게 나타났다. 산양유의 체세 포수 저감을 위해서는 측정장비의 개발이 필요하며 장비를 표준화하기 위한 표준측정법으로 pyronin Y-methyl green stain의 채택이 필요하다.

김수영 시의 역설 의식 연구

이승규Lee, Seung-Gyu) 한국문학회 2016 韓國文學論叢 Vol.73 No.-

김수영의 시에서 역설은 단순히 기법으로만 사용되는 것이 아니라 세계와 현상에 대한 관점이자 인식의 방법으로 작동한다. 사물의 본질이 단일하고 평면적인 모습으로 지각되기보다는 애매하고 복잡한 형태로 현시되기 때문에 시인의 체험을 종합하면서 시적 통일성을 이루는 데 역설이 긴요하게 기능할 수 있다. 김수영은 역설을 통해 자아와 현실의 갈등을 응시하고 시인으로서의 양심을 점검하면서 자신을 둘러싼 현실의 문제를 고발하였다. <도적>에서 집안에 든 도적과 시적 자아의 죄를 견주면서 손상된 양심에 대한 깨달음과 비판을 역설적으로 드러냈다. <거짓말의 여운 속에서>에서는 자신의 거짓말에 자신이 엮여 들게 된 아이러니를, 자유를 보장하지 않는 사회의 비판으로 확장하며 역설적 구도를 완성하였다. <이 韓國文學史>에서도 세속적이고 폭력적인 현실을 자각하고 그것을 뚫고 나아가기 위해 분투하는 시적 자아의 목소리를 역설적으로 구조화하였다. 그에 비해 <그 방을 생각하며>와 <現代式橋梁>에서는 역설을 통해 역사의 통찰을 수행하였다. <그 방을 생각하며>에서 혁명의 실패를 도리어 커다란 성취로 삼는 태도, 즉 잃음으로써 얻는 역설적 태도를 통해 역사에 대한 긍정적 신념을 표출하였다. 그 신념은 <現代式 橋梁>에서 상반된 가치를 결합하면서 혼란과 갈등을 끌어안고 나아가는 사랑’으로 이어지는데, <사랑의 變奏曲>에서 그 ‘사랑’이 커다란 역사적 역경과 희생으로 이룩된 것이라는 깨달음을 작고 하찮은 사물을 이용하여 역설적으로 제시하였다. 김수영은 세계의 현상을 보이는 대로 인식하지 않고 그 본질을 근원적인 시각으로 파악하려 하였다. 따라서 상대적인 관점으로 볼 때 대립되거나 차등되는 관계가, 절대적인 관점에서 동등하거나 역전되는 것으로 파악하기도 하였다. 이러한 역설적 인식과 태도를 통해, 양심을 자각하고 사회의 문제를 고발하였으며 현실을 통찰하고 역사적 신념을 바탕으로 한 전망을 시도하였다. The paradox in the poems of Kim Soo-yeong was not used merely as technique but served as a perspective towards the worlds and phenomenon and futhermore worked as a methodology for perception. As the essence of objects are perceived as ambiguous and complicated forms, rather than being perceived as single and two-dimensional forms, the paradox may take on useful functions in integrating the experiences of the poet and achieving poetic uniformity. Kim Soo-yeong looked into the conflicts between his ego and reality and examined the conscientiousness as a poet while revealing problems of reality surrounding him through the medium of paradox. In a poem titled <Thief>, he revealed his realization and criticism towards impaired conscience paradoxically by comparing the thief breaking into the house and sins of poetic ego. In the <Lingering Imagery>, he presented an extension of his criticism towards the society that did not guarantee freedom, thereby completing paradoxical structures in his poem, in respect of the irony that trapped him with his own lies. In the <History of Korean Literary History>, he presented paradoxical structuralization of the voice from his poetic ego that realized the secular and violent reality and strived to break through. By contract, his poems titled <Thinking of the Room> and <Modern Bridge>, he showed a historic insight through paradox. In the <Thinking of the Room>, he expressed a positive belief in history through paradoxical attitude of winning by losing, an attitude that takes failure in revolution as a significant achievement. Such belief developed into a ‘love’ embracing both confusion and conflict through combination of contradictory values in <Modern Bridge>. In the <Variation of Love>, he made a paradoxical presentation of his realization that the ‘love’ was achieved by great historic adversities and sacrifices through the prism of small and trivial objects. Kim Soo-yeong attempted to keep track of the essence in the phenomenon of the world from fundamental standpoint, rather than perceiving it as it is seen. Thus, he sometimes figured out that conflicting and differential characteristics seen from relative standpoint became equivalent or reversed when they were observed from absolute perspective. Moreover, that could be a methodology for perception based on premise of absolute belief in righteousness and truth.

축류(軸流) 콤바인의 개발(開發)에 관(關)한 기초(基礎) 연구(硏究)(II) - 탈립과정(?粒過程)의 수학적(數學的) 모형(模型) 개발(開發) -

이승규,우종구,김성태,Lee, S.K.,Woo, J.K,Kim, S.T. 한국농업기계학회 1991 바이오시스템공학 Vol.16 No.1

This study was carried out getting basic data for developing a new combine which is suitable for the cultivating situation in Korea or Southeast Asia. The relation of the amount of unthreshed grains and the axial displacement of crop in threshing process was attempted to formulate mathematically in a threshing chamber of axial-flow threshing unit. It was found that unthreshed grain is an exponetially-decaying functon of axial displacement of grains based on available data. Threshing experiments were performed to validate the mathematical model by changing various levels of pertinent variables for malting barley. Good correlation were obtained between the theoretical calculation and observed data for various test conditions, such as inclination, vane pitch, concave length, drum speed, feeding velocity, stream weight, moisture content. Therefore the model can be used for general purpose to find the amount of unthreshed grain if the mean rate of occurence of threshing of kernels(${\lambda}_{\tau}$) is properly calibrated considering some other operating conditions and crop conditions which are not involved in this analysis.

조경수의 병해충 -향나무 녹병-

이승규,Lee, Seung-Gyu 한국조경수협회 1999 造景樹 Vol.50 No.5

대추나무빗자루병

이승규,Lee, Seung-Gyu 한국조경수협회 2000 造景樹 Vol.56 No.5

급동형태(扱胴形態)와 작물(作物)의 수분함량(水分含量)이 맥주보리의 탈곡성능(??性能)에 미치는 영향(影響)

이승규,김성태,민영봉,Lee, Seung Kyu,Kim, Sung Tae,Min, Young Bong 한국농업기계학회 1983 바이오시스템공학 Vol.7 No.2

The purpose of this experiment was to evaluate the effect of the drum structures and crop moisture contents on the performance of newly developed throw-in type axial thersher. Sachun No.2 malting barley with four different crop moisture levels was used as the testing material. Four different types of threshing drum; the cylindrical drum-equipped with teeth or rubber bars and the conical drum-equipped with teeth or rubber bars were tested. The results are summarized as follows; 1. The threshing efficiency of cylindrical drum was higher than that of the conical one, and the drum with teeth was more effective in threshing than the one with bars. However, the higher the threshing efficiency over the whole range of moisture levels and drum speeds given, the more the rapid and unexpectable variations in threshing efficiencies 2. The separation efficiency of the conical drum was decreased as drum speed was increased and was not so much influenced as crop moisture content. But in case of the cylindrical drum, the result was shown in opposite way to that of the conical one. The separation efficiency of the drum with teeth was higher than that of the drum with bars and no significant decrease in separating efficiency was found at wet crop condition. 3. Foreign matters other than grain passing through the concave sieve was decreased as crop moisture content was increased, and the purity was increased at middle range of drum speed regardless of drum types. 4. Minimum grain loss was found at 700 rpm to 800 rpm of drum speed for all types of drums. The effect of crop moisture content on total grain loss was varied with drum types. As far as the grain loss is concerned, the conical drum having teeth was not so greatly influenced by various crop moisture contents and drum speeds as compared with the other types of drum. 5. Generally, the crop moisture content has more relevant effect on the germination than the drum speed regardless of drum types. The germination percentage of grain threshed by the conical drum and the bar attached drum were higher than those of cylindrical one and teeth attached one, respectively.

원추형(圓錐型) 탈곡기(??機)에 관(關)한 연구(硏究)

이승규,Lee, Seung Kyu 한국농업기계학회 1981 바이오시스템공학 Vol.6 No.1

The major limiting factor on the determination of combine capacity is the frequent occurence of clogging over the some parts of machine when the crop is wet in the case of Japanese self-feeding type combine. And in the case of American conventional combine having big separating parts, the great grain loss and damage occur when the machine is used for rice harvesting. This experiment was carried out to develop the new type threshing and separating equipment. Proto-type thresher which consist of a conical threshing drum and a conical separating sieve rotating around the threshing cone was constructed and tested. In the case of 800 rpm of threshing cone speed, average threshing loss was below 1 percent, separating loss was about 1 percent, grain damage was about 0.4 percent, and average total power required was about 2.6 PS. This design has some problems such as higher power required or wrapping problems under the conditions of feeding long damp straw. But, compared with the conventional combine or thresher, this machine certainly has some potentials for this approach to combine development. The crop feed rate must be increased through improvement of the feeding portion of the threshing cone. And it is required to investigate further about some parameters causing wrapping phenomena.

Lissodema plagiatum Lewis (Coleoptera: Salpingidae) New to Korea, with a Key to Korean Species of the Family Salpingidae Leach

이승규,김윤호,Lee, Seung-Gyu,Kim, Yoon-Ho Korean Society of Applied Entomology 2020 한국응용곤충학회지 Vol.59 No.2

한국산 미기록 종인 네무늬구멍썩덩벌레붙이(Lissodema plagiatum Lewis) (신칭)를 한반도에서 처음으로 보고하고, Lissodema laevipennis Marseul의 한국 기록을 삭제한다. 한국산 썩덩벌레붙이과에 대한 종 검색표와 미기록 종에 대한 사진과 분류학적 의견을 제시한다. Lissodema plagiatum Lewis is newly recorded and L. laevipennis Marseul is removed from the Korean fauna. A habitus photograph and taxonomic note of the newly recorded species are provided, with a key to Korea species of the family Salpingidae Leach.

축류 (軸流) 콤바인의 개발에 관한 기초 연구 (Ⅱ) - 탈립과정의 수학적 모형 개발 -

이승규,우종구,김성태 ( S . K . Lee,J . K . Woo,S . T . Kim ) 한국농업기계학회 1991 바이오시스템공학 Vol.16 No.1