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이성재,신충훈,최소영,이동형,유순미,송흥권,윤인하,Lee Sung Jae,Shin Chung Hun,Choi So Young,Lee Dong Hyeong,Yoo Soon Mi,Song Heung Gwon,Yoon In Ha 대한방사선치료학회 2022 대한방사선치료학회지 Vol.34 No.-
Purpose: The purpose of this study is to evaluate the effectiveness of reducing the absorbed dose to the ovaries and the quality of the CBCT image when using the Halcyon<sup>TM</sup> Fast kV CBCT of cervical cancer patients of child-bearing age who performed ovarian transposition Materials and Methods : Contouring of the cervix and ovaries required for measurement was performed on the computed tomography images of the human phantom (Alderson Rando Phantom, USA), and three Optically Stimulated Luminescence Dosimeter(OSLD) were attached to the selected organ cross-section, respectively. In order to measure the absorbed dose to the cervix and ovaries in the Truebeam<sup>TM</sup> pelvis mode (Hereinafter referred to as TP), The Halcyon<sup>TM</sup> Pelvis mode (Hereinafter referred to as HP) and The Halcyon<sup>TM</sup> Pelvis Fast mode (Hereinafter referred to as HPF), An image was taken with a scan range of 17.5 cm and also taken an image that reduced the Scan range to 12.5cm. A total of 10 cumulative doses were summed, It was replaced with a value of 23 Fx, the number of cervical cancer treatments, and compared In additon, uniformity, low contrast visibility, spatial resolution, and geometric distortion were compared and analyzed using Catphan 504 phantom to compare CBCT image quality between equipment. Each factor was repeatedly measured three times, and the average value was obtained by analysing with the Doselab (Mobius Medical Systems, LP. Versions: 6.8) program. Results: As a result of measuring absorbed dose by CBCT with OSLD, TP and HP did not obtain significant results under the same conditions. The mode showing the greatest reduction value was HPF versus TP. In HPF, the absorbed dose was reduced by 39.8% in the cervix and 19.8% in the ovary compared to the TP in the scan range of 17.5 cm. the scan range was reduced to 12.5 cm, absorbed dose was reduced by 34.2% in the cervix and 50.5% in the ovary. In addition, result of evaluating the quality of the image used in the above experiment, it complied with the equipment manufacturer's standards with Geometric Distortion within 1mm (SBRT standard), Uniformity HU, LCV within 2.0%, Spatial Resolution more than 3 lp/mm. Conclusion: According to the results of this experiment, Halcyon<sup>TM</sup> can select more various conditions than Truebeam<sup>TM</sup> in treatment of fertility woman who have undergone ovarian Transposition , because it is important to reduce the radiation dose by CBCT during radiation therapy. So finally we recommend Halcyon<sup>TM</sup> Fast kV CBCT which maintains image quality even at low mAs. However, it is consider that the additional exposure to low doses can be reduced by controlling the imaging range for patients who have undergone ovarian transposition in other treatment machines.
SVG를 이용한 유${\cdot}$무선 인터넷 환경에서의 캐릭터 서비스
이성재,유남현,양수영,김원중,Lee Sung-Jae,Yoo Nam-Hyun,Yang Soo-Yung,Kim Won-Jung 한국정보통신학회 2005 한국정보통신학회논문지 Vol.9 No.8
현재 유선 인터넷 환경에서는 이미지를 표현하기 위하여 대부분 GIF와 JPG를 이용하며, 무선 인터넷 환경에서는 SVG, wBMP, SIS, PNG, Flash Lite 등과 같은 다양한 이미지 파일들을 이용한다. 따라서 유${\cdot}$무선인터넷을 동시에 지원하기 위한 콘텐츠를 제작하는 경우 이중으로 제작비용이 소요되는 문제점이 있다. 이에 본 논문에서는 유무선 인터넷을 동시에 지원할 수 있는 서비스를 재발할 때, SVG를 효율적으로 적용하는 방법을 제안하였다. 유${\cdot}$무선 인터넷을 동시에 지원하는 서비스에 SVG를 이용함으로써 유${\cdot}$무선 인터넷 기반의 콘텐츠를 제작할 때 기업이 지출해야 하는 개발비용을 크게 줄일 수 있다. Currently, most wired Internet describes an image file using GIF and JPG and wireless Internet uses various image files such as SVG, wBMP, SIS, PNG, and Flash Lite. Accordingly, overlapping occurs in the investment of production cost for making contents. This thesis proposes a Character(Avatar) service that could simultaneously aid both wired and wireless Internet by utilizing SVG, a vector based image file format for describing two-dimensional graphics. We will reduce cost of developing contents, when develop contents that simultaneously supports wired and wireless Internet using SVG.
이성재,김보라,최태규,이상혁,육기환,Lee, Sung-Jae,Kim, Borah,Choi, Tai Kiu,Lee, Sang-Hyuk,Yook, Ki-Hwan 대한생물정신의학회 2014 생물정신의학 Vol.21 No.4
Objectives This study aims to investigate possible associations between proneness toward smartphone addiction and certain psychopathological variables to evaluate the psychopathological meaning of smartphone addiction. Methods Questionnaires were assigned to 755 adults between September and November 2012. We used the Korean Smartphone Addiction Proneness Scale (SAPS), the Beck Depression Inventory (BDI), the Beck Anxiety Inventory (BAI), the Obsessive-Compulsive Inventory-Revised (OCI-R), and the Barratt Impulsivity Scale-11 (BIS-11). Subjects were classified into two groups according to the scores of the SAPS ; the addiction proneness group and the normal-user group. Results The addiction proneness group had significantly higher scores than the normal-user group in the BDI, BAI, OCI-R, and BIS-11. The scores of the SAPS were positively correlated with the scores of the BDI, BAI, OCI-R, and BIS-11. Using logistic regression analysis, smartphone addiction proneness showed a significant association with BIS-11. Conclusions The results of this study suggest that smartphone addiction proneness may be associated with depression, anxiety, obsessive-compulsive symptoms, and impulsivity. Furthermore, impulsivity could be a vulnerability marker for smartphone addiction proneness.
한국산(韓國産) 참나무과(科) 수종(樹種) 도관구조(道管構造)에 관(關)한 연구(硏究)(II) -도관벽(導管壁)의 수식구조(修飾構造)-
이성재,이원용,Lee, Sung Jae,Lee, Wan Yang 강원대학교 산림과학연구소 1992 Journal of Forest Science Vol.8 No.-
This study was carried out to investigate the micromorphology of vessel wall sculpture such as shape of perforation plate, perforation rim, steepness of perforation plate, occurrence of vestured pit, warty layer and ray-vessel pitting on 13 species of Fagaceae in Korea. The results were summarized as follows ; 1. In the species examined, all sample species except Fagus crenata var. multinervis have simple perforation plate. But Fagus crenata var. multinervis has simple and scalariform perforation plate (it was called to combination perforation plate) in a tree stem. 2. The shapes of perforation rim could be classified into five types; Type A without tail, Type B with small tail on both sides, Type C with long tail on both sides, Type D with tail only one side and Type E with the very short interval between perforations. Among five types, Type Band C have higer frequency of distribution than the others. 3. The steepness of perforation plate measured was about 20 degree on pore zone and 43 degree on outside parts of pore zone. 4. Species with vestured pit were Q. aliena, Q, dentata, Q. variabilis, Fagus crenata var. multinervis, Castanopsis cuspidata var sieboldii, Q. acuta, Q. stenophylla, and Q. glauca. But the extent of vesturing was very slight and vestured pits were observed mainly in ray-vessel pit of some vessel elements. 5. Species with warty layer on the inner surface wall of all vessel elements were Q. acuta, Q. stenophylla, Q. glauca, Fagus crenata var. multinervis and species with warty layer of some vessel elements were Q. aliena, Q, dentata, Q. variabilis, Castanopsis cuspidata var. sieboldii. 6. Species with palisade ray-vessel pit were Q. acuta, Q. stenophylla, Q. glauca, Castanea crenata, Castanea bungeana, Q. aliena, Q. serrata, Q. mongolica, and species with scalariform ray-vessel pit was Fagus crenata var. multinervis and species with oval ray-vessel pit were Q, dentata, Castanopsis cuspidata var sieboldii.
이성재,송재원,신상영,Lee, Seong-Jae,Song, Jae-Won,Sin, Sang-Yeong 대한전자공학회 1984 전자공학회지 Vol.21 No.3
Submicron gratings are fabricated holographically on thin film single mode and multimode waveguides. Thin film waveguides are made by spin-coating polyurethane solution on the substrates of microscope slide glass and Corning 7059 glass. In order to characterize thin film waveguides, the refract사e index and the thickness of thin films are measured by using the m-line spectroscopy. The fabricated gratings are tested as a grating coupler, a mode converter, and a beam splitter. Also chirped gratings are fabricated to observe beam expansion phenomena and thus the possibility of the wavelength demultiplexing.
정지궤도 위성통신 환경모의를 위한 100 MHz 대역폭의 위성링크 시뮬레이터 개발
이성재,김용선,한태균,Lee, Sung-Jae,Kim, Yong-Sun,Han, Tae-Kyun 한국군사과학기술학회 2011 한국군사과학기술학회지 Vol.14 No.5
The transponder simulator designed to simulate the transponder of military satellite communication systems in the geostationary orbit is required to have time delay function, because of 250 ms delay time, when a radio wave transmits the distance of 36,000 km in free space. But, it is very difficult to develop 250 ms time delay device in the transponder simulator of 100 MHz bandwidth, due to unstable operation of FPGA, loss of memory data for the high speed rate signal processing. Up to date, bandwidth of the time delay device is limited to 45 MHz bandwidth. To solve this problem, we propose the new time delay techniques up to 100 MHz bandwidth without data loss. Proposed techniques are the low speed down scaling and high speed up scaling methods to read and write the external memory, and the matrix structure design of FPGA memory to treat data as high speed rate. We developed the satellite link simulator in 100 MHz bandwidth using the proposed new time delay techniques, implemented to the transponder simulator and verified the function of 265 ms time delay device in 100 MHz bandwidth.
일본 만화 『이노상』에 나타난 프랑스의 사형집행인 - ‘여성-괴물’ 개념을 중심으로 -
이성재(Sung-jae LEE),오길영(Gil-young OH) 한국프랑스사학회 2020 프랑스사연구 Vol.- No.43
일본 만화계는 압도적 시장 규모만큼이나 다양한 장르의 작품들이 생산되는 것으로 유명하다. 특히 베스트셀러 가운데 프랑스 혁명기의 역사를 배경으로 하는 작품들이 적지 않다는 점은 매우 흥미롭다. 가장 유명한 작품으로는 1970년대의 이케다 리요코의『베르사유의 장미』와 최근에 발표되어 큰 인기를 누리고 있는 사카모토 신이치의 『이노상』, 『이노상 루즈』를 들 수 있다. 동일한 시대를 다루지만 『베르사유의 장미』는 프랑스 궁정의 삶에, 『이노상』은 사형집행인이었던 상송 가문의 역사에 관심을 기울이고 있다. 그 결과 『베르사유의 장미』에서 낭만적으로만 묘사되었던 프랑스가 『이노상』에서는 신체를 대상으로 하는 사형제도가 존재하는 잔혹한 사회로 그려진다. 또한 『이노상』에서 여성은 과거와 같이 대의와 진정한 사랑을 추구하는 캐릭터가 아니라 계산적이고 생존을 위해 모든 것을 할 수 있는 잔혹한 괴물이 된다. 『이노상』의 여자 주인공인 마리조제프 상송은 바로 그러한 인물상을 형상화한 것으로서, 이는 남성과 동등해지고자 하는 일본 여성들의 적극적인 의지를 반영한다고 할 수 있다. The Japanese manga world is widely acknowledged for its producing power of various genres as well as the overwhelming market size. It is interesting that some of the best-selling works are based on the history of the French Revolution. The most famous works are Ryoko Ikeda"s Rose of Versailles in the 1970s, and Shinichi Sakamoto"s recently published Innocent and Innocent Rouge. Although dealing with the same era, the Rose of Versailles paid attention to the lives of French Royal Court, while Innocent deals with the history of the Sanson family, the executioners of that period. Therefore, we know that France, which was only romantically depicted in the Rose of Versailles, is now portrayed as a society where a brutal death penalty is practiced. In Innocent, female characters do not search for social justice or romantic love but they are depicted as monstrous feminines that are computational and can do everything to survive. Marie-Josèphe Sanson, main female character of Innocent, embodies such a figure, which can be said to reflect the active desire of Japanese women to become equal to men.
이성재 ( Sung Jae Lee ) 동국사학회 2011 동국사학 Vol.50 No.-
빈곤과 기아로 표상화된 아프리카의 이미지는 아프리카에 대한 무지이며 세계사적인 시각의 부재를 의미한다. 세계적 차원에서의 다양성이 강조되는 작금에 아프리카의 역사와 문화에 대한 이해는 다시금 그 가치를 인정받고 있다. 하지만 놀랍게도 아프리카에 대한 구체적인 역사적 사실과 문화의 내용을 접하기는 쉽지 않다. 대부분의 아프리카에 대한 연구가 주로 오리엔탈리즘이나 혹은 다양성의 관점에서 전개되고 있는 것도 이와 무관하지 않을 것이다. 이제 중요한 것은 그들의 역사가 실제로 무엇인지 그리고 그들이 이를 어떻게 받아들이고 있는지를 구체적으로 아는 것이다. 이러한 문제의식에서 본 논문은 우선 무문자 사회를 문자가 없는 미개한 사회가 아니라 "문자를 필요로 하지 않는 사회"라는 관점에서 살펴보았다. 문자에 대한 지나친 강조는 종종 구술사에 대한 폄훼로 이어지기 쉽지만 역설적으로 구술사 연구야말로 역사를 문자의 감옥으로부터 해방시킨다고 할 수 있다. 아프리카의 역사의 두 번째 특징은 문자의 세계가 아닌 신화의 세계를 현실로 끌어들여 사람들의 활동을 정당화시키며, 더 나아가 의례를 통해 신화의 세계를 현실에 뿌리내리게 한다는 데 있다. 식민주의자들은 아프리카로부터 이러한 무문자 사회의 역사성을 빼앗고, 이에 대한 무시와 경멸을 주입했다. 아프리카 역사의 세 번째 특징으로 본 논문은 자이레 강 유역의 부족 사람들과 벤다족의 사례를 살펴보았다. 이를 통해 역사를 실용적으로 바라본다는 것이 무엇인지, 그리고 진화와 전통에 대해 우리가 가지고 있는 편견이 무엇인지를 확인할 수 있었다. 현대 사회에서도 신화적 세계와 자의적인 역사 선택의 모습은 물리적인 시간의 흐름을 뛰어 넘어 여전히 우리의 마음에 살아 있다. 하지만 현재의 역사 연구는 이러한 역사에 대한 근본적인 갈망을 외면한 채 지나치게 객관과 논리에 빠져들고 있는지도 모른다. 실용적이지 않은 학문이라는 냉대를 받고 있는 우리의 역사 교육 현실에서 아프리카인들의 역사를 바라보는 태도는 단순한 신선함을 넘어 새로운 패러다임의 전환을 우리에게 요구하고 있다고 할 수 있다. General image of Africa would be poor and miserable continent, which means the ignorance about Africa and the absence of world historical perspective. By the way, with intensifying globalization, the knowledge of African history and culture is being highly appreciated. However, it`s still difficult to get an access to concrete history or cultural contents of Africa. This situation would be linked to the fact that most of studies on Africa are based on the ``Orientalism`` or the pursuit of ``diversity`` without considering the specificity of Africa. To know concretely what is their history and how Africans accept their history are really important. With this problematic, this study analyzed African society without letters not as a primitive and underdeveloped society but as "a society which doesn`t need the letters." Excessive emphasis on the letters often lead to the neglect of oral history but ironically the study of oral history can emancipate history from prison of letters. Another feature of African history is that it brings the mythological world into the real life and it justifies people`s activity using that world. In addition, African history makes mythological world rooted deeply into the real life through ceremonies. The colonialists deprived the historicity of the oral history from Africa. The third feature of African history is that Africans deal with the historical facts from the very practical point of view and from their social context. We explained these using the examples of tribes living along the Zaire river and Venda. History which seems to disappear, history which doesn`t make sense at all or ad-hoc selection of historical facts doesn`t generally appeal to us. However, it doesn`t allow us to neglect their unique attitude towards history. Rather than that, we should think seriously "what is living history" from studying African`s attitude towards the history. We would like to emphasize that the mythological world and ad-hoc selection of history are still alive in our hearts in present-day society over the physically long period.