항공기 부품국산화 진흥방안 - 항공기 엔진 국산화 방안

이대성,Lee, Dae-Seong 한국항공우주산업진흥협회 1995 航空宇宙 Vol.29 No.-

옥천지향사대(沃川地向斜帶)의 화성활동(火成活動)에 의한 광화작용(鑛化作用)의 유형(類型)에 관(關)한 연구(硏究)

이대성,지정만,이대운,Lee, Dai Sung,Chi, Jeong Mann,Lee, Dai Woon 대한자원환경지질학회 1980 자원환경지질 Vol.13 No.3

The granitic plutons associated with Ogcheon geosynclinal zone can be grouped into three different subzones; SE-Subzone for the migmatitic and schistose granites of the southeast margin, 101-181m.y. old; NW-Subzone for those of the northwest margin, 112-163m. y. old; and C-Subzone for those of central part of the zone, 63-183m.y. old. The intrusives in C-Subzone are further subdivided into the older, adamellite to granodiorite (148-183m.y. old) and the younger, perthitic granites (63-106m,y. old). The metallogenic distribution of South Korea suggests that, in the Ogcheon Zone, it is possible to delineate an elongated polymetallogenic province in the general orientation of the zone intimately related with the migmatite and plutonic zones mentioned. Moreover, the mineralization in the province was basically controlled by the patterns of local geology involving country rocks and related igneous bodies, that permit subdivision of the province into the following three parts: Northeast (NE) Province consists dominantly of thick Paleozoic calcareous sediments; Middle (M) Province is characterized by predominant argillaceous and partly calcareous sediments of Precambrian to Late Paleozoic age; and Southwest (SW) Province consisting mainly of volcanic and arenaceous sediments of Mesozoic age. The three different plutonic zones with three different country rock provinces above mentioned make a combination which consists of nine classes. Each class can be assumed to be characterized by specific mineralization type. In order to classify the mineralization types, the present study sampled twenty six ore deposits and mineralized areas in Ogcheon zone as shown figure 2; eight ore deposits from plutonic SE-Subzone, ten from the plutonic NE-Subzone and eight from the plutonic C-Subzone. The characteristics of the classes are as follows: NE-SE is predominant in Au-Ag vein and Sn-migmatite of katazonal occurrence; NE-C is most productive in Pb-Zn and remarkable in Fe contact deposit in mesozone and partly Pb-Zn-Cu skarn in limestone and subordinate in mesozone and partly Pb-Zn pipes; M-SE is considerable in Au-Ag vein and rare elements (Nb, Ta, etc.) of pegmatite; M-C is predominant in F-veins in epizone and Mo-W, Fe, Cu veins occur in replacement type; M-NW is productive in Fe metamorphic and skarn types, partly remarkable in Cu, Pb-Zn contact; SW-SE is barren in mineralization related to Jurassic igneous rocks; SW-C is predominant in alunite and pyrophyllite in tuffs; and SW-NW is scarece in Pb-Zn, Cu, As and Au-Ag veins.

Chemical Composition of Petrographic Assemblages of Igneous and Related Rocks in South Korea

이대성,Lee, Dai Sung The Korean Society of Economic and Environmental G 1977 자원환경지질 Vol.10 No.2

남한(南韓)에 분포(分布)하는 화성암류(火成岩類)의 화학성분(化學成分)과 그 암석화학적성질(岩石化學的性質)을 개략적(槪略的)으로 알기 위해서 35개(個) 문헌(文獻)에서 359개(個) 화성암류(火成岩類) 및 화성기원(火成起源)으로 인정(認定)되는 암석류(岩石類)의 화학분석치(化學分析値)를 인용(引用)하였다. 분석치(分析値)들은 27개암석조합(個岩石組合)으로 구분(區分)하고 이들은 다음의 5개암석구(個岩石區)로 갈라서 처리(處理)하였다. (1) 경기지괴(京機地塊), (2) 영남지괴(嶺南地塊)(도표(圖表)에서는 이들을 합(合)쳐서 하나의 지괴(地塊)로 묶음). (3) 옥천대(沃川帶), (4) 경상분지(慶尙盆地), 및 (5) 알카리암구(岩區), 분석치(分析値)는 $SiO_2$대(對) $Na_2O+K_2O$ 및 CaO, D. I. 대(對)산화물류(酸化物類), AFM 삼각도(三角圖), AKF삼각도(三角圖), An-Ab-Or 노름삼각도(三角圖), 및 Q-Or-Ab 노름삼각도(三角圖)로 처리(處理)하였다. 이에 의(依)하면 (1) (2) (3) (4) 는 모두 칼식암계열(岩系列)에 (5)는 알카리암계열(岩系列)에 속(屬)한다. 또한 (1)-(2)와 (3)의 분화경로(分化經路)는 세계(世界)칼크알카리암계열(岩系列)에 (4) 는 Karoo dolerite에, (5)는 Mull 화산(火山) 및 알카리감람석현무암태지(橄攬石玄武岩台地)에서의 분화경(分化經)들과 유사(類似)하다. 지각내(地殼內) 점상질암(粘上質岩)과의 동화정도(同化程度)는 (1)-(2) 및 (3)에서는 매우 높고 (4)에서도 높으며 (5)에서는 낮다. $K_2O$ : $Na_2O$는 대체(大體)로 $K_2O$ < $Na_2O$이고 (3)에서만 $K_2O{\approx}Na_2O$를 보이고 있다. 노름치(値)에 의한 도표(圖表)에 의하면 지질시대(地質時代)의 차이(差異)는 있으나 남한(南韓)의 화성암류(火成岩類)는 일본(日本)의 화성암류(火成岩類)와 유근사(類近似)하다. Results of 359 chemical analyses of igneous and related rocks of the south Korea were collected from 35 papers to see preliminarily some trends of chemical properties of spatial igneous rock assemblages according to five geotectonic provinces: (1) Kyonggi land, (2) Ryongnam land (on diagram these are jointed together as a massif), (3) Ogcheon zone, (4) Kyongsang basin and (5) Alkali rock province. The data were plotted on the diagrams; $SiO_2$ vs. $Na_2O+K_2O$ and CaO, D. I. vs. oxides, AFM triangle, AKF triangle, and normative An-Ab-Or and Q-Or-Ab triangles for each rock assemblages of individual provinces.

충격 압축에 의한 제논 가스의 이온화 특성 연구

이대성,신재렬,최정열,최윤수,김형원,Lee, D.S.,Shin, J.R.,Choi, J.Y.,Choi, Y.S.,Kim, H.W. 한국군사과학기술학회 2010 한국군사과학기술학회지 Vol.13 No.3

In this paper, the ionization characteristics of noble gases are studied numerically behind strong shock waves. As a first step, the equilibrium ionization mechanism of noble gases is modeled in wide ranges of temperature and pressure. As a next step the equilibrium ionization model is coupled with fluid dynamic equations to analyze the local thermodynamic equilibrium(LTE) ionization process at high temperature and pressure conditions behind the strong imploding shock waves. The ionization characteristics of xenon gas is studied in a wide range of test conditions with thermal radiation effects. Hence, the results give optimal conditions of maximum ionization and radiation behind the imploding shock waves.

괴산부근(槐山附近)에 분포(分布)하는 옥천층군(沃川層群)의 지질구조(地質構造)에 관(關)하여

이대성,김용준,채인철,Lee, Dai Sung,Kim, Yong Jun,Chai, In Chul 대한자원환경지질학회 1977 자원환경지질 Vol.10 No.4

This study is focused on the geological structure of Igog-Jangam folded zone in the vicinity of Goesan town where Ogcheon group distributes. The geology is composed of Gyemyungsan formation, Daehyangsan quartzite, Munjuri formation and Hwanggangri formation of Ogcheon group unknown age in descending order, and porphyritic biotite granite and dyke rocks that intruded into the Ogcheon group. The study revealed that Igog-Jangam folded zone is a plunged synclinal fold based on the following evidences; 1) Some pebbles in Hwanggangri formation at Minaemi-gol (a name of village) consists of phyllite of Munjuri formation. 2) The pebble bearing phyllitic bed in this area, Hwanggangri formation was recognized as the uppermost member in Ogcheon group instead of the basal one of the group. 3) A crest of anticlinal fold has been appeared near the Goegang bridge as a structural counter-part of that of the present area. 4) The study of lineation of minor fold in Munjuri formation also suggests that Igog-Jangam folded zone manifests to be a synclinal structure.

옥천대(沃川帶)의 지질(地質) 및 광물자원(鑛物資源)에 관(關)한 연구(硏究) -평창(平昌)~제천간(堤川間)에 분포(分布)하는 옥천대하부(沃川帶下部)와 기반(基盤)의 암상(岩相) 및 화성(火成) 관입체(貫入體)의 암질(岩質)에 대(對)한 연구(硏究)-

이대성,나기창,김용준,Lee, Dai Sung,Na, Ki Chang,Kim, Yong Joon 대한자원환경지질학회 1985 자원환경지질 Vol.18 No.4

A petrological study has been done in the pyeongchang-Jaecheon area which is a northwestern part of the basement of Ogcheon zone for the purpose of comparison of the area to the Nogjeon-Yeongchun area which is the antipodal basement of the zone in the petrological and geotectonical view points. The major units of the area are Precambrian granitic gneissic complex, banded gneiss, linea ted leucocratic gneiss and pegmatitic leucogranitic gneiss in the west, elongated exposure of quartz schist (or partly quartzite) and phyllite, named as Jungdaegal-bong Group correlated to the lower sequence of Joseon Group, in the middle, and limestone and calcic dolomite, Iptanri Formation, correlated to the middle of Joseon Group in the east. Igneous plutons are distributed in the areas of gneissic complex and limestone formation as well as in the Eosangcheon and Daedaeri areas in the southeastern out of the area. Present study reveals that the gneissic complex are the products of granitization to metamorphism of amphibolite facies in the order of above mentioned from the metasediments of schists and calcareous rocks. A notable characteristics of the phyllite of Jungdaegal-bong Group is the presence of syntectonically segregated quartz rods in the forms of lens, swirl or boudinage in evenly distributed in the phyllitic to chloritic matrix. Igneous rocks range in composition from gabbro through diorite, granodiorite, to schistosed and porphyritic granites in stock and dike. The orogenic movement of the Ogcheon zone initiated in the middle Proterozoic time, pre-sedimentation of Ogcheon Group and superposed the granitization in Permian, Jurassic Daebo orogeny with granitic batholiths and stocks, and Cretaceous plutonic intrusion.

이종 분산 클라우드 서비스 브로커리지 환경에서의 사용자 통합 인증 시스템 설계

이대성,Lee, Daesung 한국정보통신학회 2016 한국정보통신학회논문지 Vol.20 No.11

현재 클라우드 시스템은 사업자가 각자의 방식으로 클라우드 환경을 구축함에 따라 클라우드 시스템 간 상호운용성이 떨어져 호환이 되지 않는다. 예를 들어 Google 클라우드를 사용하는 사용자는 별도의 추가적인 로그인하는 과정을 거치지 않으면 MS(마이크로소프트) 클라우드 시스템을 사용할 수 없다. Google 클라우드 사용자가 MS 클라우드 서비스를 이용하기 위해 Google 클라우드 시스템 로그아웃 이후 다시 MS 클라우드에 로그인 하는 과정을 거쳐야 한다. 이러한 문제를 해결하기 위해 CSB(Cloud Service Broker) 기술이 등장하여 클라우드 시스템간의 상호 호환 문제를 해결하고 있으나, 아직도 많은 연구와 개발이 필요한 실정이다. 본 연구에서는 이종 분산 클라우드 환경의 서비스 중재 기술로 등장하고 있는 CSB(Cloud Service Broker) 기술 중에서 클라우드 사용자의 상호운용성의 근본적인 해결 과제인 사용자 통합 인증 시스템을 설계한다. Currently, cloud systems are not interoperable due to low interoperability between cloud systems as operators build up cloud environments with their own way. For example, users of the Google cloud system can not use the Microsoft (Microsoft) cloud system unless they go through an additional log-in process. In order for Google cloud system's users to use MS cloud system services, they must log in to the MS cloud system again after logging out of Google cloud system. In order to solve these problems, Cloud Service Broker(CSB) technology has emerged to resolve the interoperability problem between cloud systems, but many researches and developments are still needed. In this paper, we design an integrated user authentication system, which is a fundamental problem of cloud user interoperability among CSB (Cloud Service Broker) technologies, which is emerging as a service intervention technology of heterogeneous distributed cloud environment.

가스터빈 엔진의 연소기 성능 시험

이대성,Lee, Dae-Seong 재료연구소 1995 機械와 材料 Vol.7 No.3

중국의 반(反)테러리즘법 제정을 위한 검토: 미국.영국.독일과 비교하여

이대성,안영규,Lee, Dae Sung,Ahn, Young Kyu 한국융합보안학회 2014 융합보안 논문지 Vol.14 No.6

중국은 광대한 영토와 다양한 민족, 종교, 그리고 문화 등이 공존하고 있다. 이러한 중국은 민족, 종교, 자원 등의 갈등으로 인하여 테러리즘 위협에 직면해 있다. 중국은 2011년 10월 29일 제11대 전국인민대표대회 상무위원회에서 반(反)테러리즘 업무강화와 관련한 결정(決定)을 하였다. 이 연구는 중국의 반(反)테러리즘 관련 결정과 미국, 영국, 독일의 대(對)테러리즘 관련법을 분석 및 평가하였다. 미국, 영국, 독일의 대(對)테러리즘 관련법은 크게 사전예방(事前豫防)과 사후진압(事後鎭壓) 측면, 대인적(對人的)과 대물적(對物的) 측면으로 구분하여 제정하였고, 대(對)테러리즘 관련 국가기관의 권한(權限)과 역할(役割)도 재조정(再調整)하였으며, 대(對)테러리즘 관련법 내용도 명시적이고 구체적이며 체계적이라고 할 수 있다. 그러나 중국의 반(反)테러리즘 관련 결정은 사전예방(事前豫防) 진압(鎭壓), 대인(對人) 대물적(對物的), 국가기관(國家機關)의 권한과 역할 등에 대한 한계가 있다. 이 연구에서는 중국이 향후에 반(反)테러리즘 관련법을 제정함에 있어, 외국의 대(對)테러리즘 관련법에 대한 시사점을 검토하였고, 개정된 중국 형법의 테러리즘 관련 범죄에 관한 규정을 반(反)테러리즘 관련 결정과 어떻게 접목할 것인가를 논의하였다. China has vast land, variety of people, religions and cultures. China has faced terrorism threat from the struggles of people, religions and resources. The 11thStanding Committee of the National People's Congress of China decided to strengthen the anti-terrorism action on October 29, 2011. This study compared, analyzed and estimated the counter-terrorism laws of the USA, Britain and Germany thinking about the China's anti-terrorism decision. The counter-terrorism laws of the USA, Britain and Germany are largely composed of previous prevention of terror and oppression of it later. They enacted the laws both for people and property. They also rearranged the power and role of governmental institutes on counter-terrorism. The contents of the counter-terrorism laws are specific, detailed and systematic. But the anti-terrorism law of China has restriction on the power and roles for previous prevention and oppression of terrorism, handling of people and property. This study reviewed the foreign countries' counter-terrorism laws and the way to connect the regulations on terrorism crimes of the revised Chinese criminal law and the anti-terrorism decision, when they enact the anti-terrorism laws in China in the future.

보은화강섬록암(報恩花崗閃綠岩) 서남부(西南部) 접촉대(接觸帶)에 관(關)한 암석학적(岩石學的) 연구(硏究)

이대성,박종심,Lee, Dai Sung,Park, Jong Sim 대한자원환경지질학회 1981 자원환경지질 Vol.14 No.2

Southwestern contact zone of the Boeun granodiorite occurs near the thrust fault between the Ogcheon Group and Majeonri Limestone Formation. Ogcheon Group, metasediments composed of the Munjuri Formation, Changri Formation, and unconformably overlying Hwanggangri Formation, belongs to greenschist facies of regional metamorphism accompanied with deformation of two fold axes, $N10^{\circ}E$ and $N45-65^{\circ}E$ directions. Basic metamorphic rocks occurring in the Changri and Limestone Formations are the meta-basalts and meta-diabases of tholeiitic basalt series. The meta-basalts intruded in the Changri Formation as sills, whereas the meta-diabases in the Changri and Limestone Formations as stocks in appearance. They are considered to have emplaced before the formation of two fold axes and related with the thrust fault, based on the geologic setting of the area. The metamorphic facies are identified to be greenschist facies to epidote-amphibolite facies for the meta-basalt, and epidote-amphibolite facies for the meta-diabases. It is interpreted that such a variety of facies was related from the combination of earlier deuteric alteration and later regional metamorphism. The metasediments in southwestern contact zont of the Boeun granodiorite which is a product of later syntectonic intrusion of middle Jurassic in age, show pyroxene-hornfels facies near the contact and amphibole-horenfels facies away from the contact to the mineral zoning in the contact metamorphic aureole of the Limestone Formation, based on the paragenetic analysis of mineral assemblages. The Limestone in the area appears to be considerably $SiO_2-CaO-MgO-CO_2-H_2O$ can be adopted to evaluate equilibrium conditions of the mineral assemblages in each mineral zone. It is revealed that a temperature gradient was existed accross the contact aureole ranging from the higher igneous side to lower sedimentary side, whereas no clear trend of $XCO_2$ variation appears but high mole fraction. The tremolite diopside-quartz-calcite assemblages occurs in common through the most mineral zones of contact aureole that is in good agreement with the equivalent reaction curve which extends over a wide range of $T-XCO_2$ conditions.