피치운동을 이용한 정밀 다위치 정렬기법 개발

이정신,Lee, Jung-Shin 한국군사과학기술학회 2010 한국군사과학기술학회지 Vol.13 No.4

In Strapdown Inertial Navigation System, alignment accuracy is the most important factor to determine the performance of navigation. However by an existing self-alignment method, it takes a long time to acquire the alignment accuracy that we want. So, to attain the desired alignment accuracy in as little as $\bigcirc$ minutes, we have developed the precise multi-position alignment method. In this paper, it is proposed a inertial measurement matching transfer alignment method among alignment methods to minimize the alignment error in a short time. It is based on a mixed velocity-DCM matching method be suitable to the operating environment of vertical launching system. The compensation methods to reduce misalign error, especially azimuth angle error incurred by measurement time-delay error and body flexure error are analyzed and evaluated with simulation. This simulation results are finally confirmed by experimentations using FMS(Flight Motion Simulator) in Lab and the integration test to follow the fire control mission.

江東6州와 尹瓘의 9城을 통해 본 고려의 대외정책

李貞信(Lee, Jung-Shin) 국방부 군사편찬연구소 2003 군사 Vol.- No.48

고려시대 금 은채굴과 금소 · 은소

이정신(Lee Jung-Shin) 호서사학회 2010 역사와 담론 Vol.0 No.57

Due to their unique color and brilliance, and easiness to work, gold and silver are a highly sought-after precious metal that throughout virtually all of recorded history has been used as money, ornaments, and decoration, which represent one's wealth and power. In the Goryeo era, a main method for gold was panning rather than mining. Therefore, many communities for gold were located along rivers where panning for gold was easy. The regions for gold and silver were located in various places of Chungcheongdo, Jeollado, Gyeongsangdo, and Gangwondo, and the government established communities for gold in order to maintain their stable production. While panning was usually used for gold, people had to toil and moil in order to produce silver because it was mainly produced by mining. It was a rule to offer the predetermined amount of mined silver to the government, and if failed to offer the amount of silver, the government dispatched local government officials in order to collect a regular tax and a poll tax, showing the most important task of the officials: collecting taxes. Gold and silver were not only used as valuables for the royal and noble families, but also main exports, so the government levied heavy regular and special taxes on communities for gold and silver. The tax burdens were so heavy that people in the communities began to leave their communities in the early Goryeo era, and many communities disintegrated during the Mongol war. Hence, the amount of gold and silver that the government could collect substantially decreased during the Won's intervention era. As Goryeo could not provide sufficiently Won with gold and silver, Won directly dispatched their engineers to Goryeo, and engineers produced gold and silver by using local people. This shows that Goryeo's communities for gold and silver were perfectly broken up. Hence, king ChoongRyul tried to exclude gold from trading items with Won, declaring that Goryeo did not produce any gold and silver any more. SamBongJip's mention that collectingsystems for gold and silver were all abolished means that supply and demand of mining materials became unstable. However, when Ming substituted for Won, Ming demanded more gold and silverto Goryeo than Won did. Hence, anxiety for unstable demand and supply of gold got to be more serious after Ming was established, and this became a main agenda of the Goryeo, and even of the Chosun era, which followed Goryeo.

고려의 대외관계와 묘청의 난

이정신 ( Jung Shin Lee ) 고려대학교 역사연구소 1996 사총 Vol.45 No.-

원 간섭기 환관의 행적

이정신(Lee Jung-Shin) 고려사학회 2014 한국사학보 Vol.- No.57

환관은 일반 양인이나 천민출신이 대다수를 차지했던 만큼, 이들은 오직 윗사람에 대한 맹목적 충성으로 출세할 수 있었다. 고려 전기 환관은 그 수가 많지않아 세력이 미약했지만 의종 대에 환관 정함과 백선연 등이 왕의 총애를 받아 지후로 임명되면서 일시적으로 환관세력이 커졌다. 의종은 왕권 강화책의 일환으로 자신에 전폭적으로 복종하는 환관들을 관원으로 임용하고자 했던 것이다. 그러므로 의종대의 환관들의 발호는 관원들과의 힘겨루기 과정에서 국왕이 그들을 이용한 측면이 크다. 원 간섭기에 들어서면서 환관세력이 다시 발흥하게 되었다. 이 시기 환관세력의 발호는 고려 내부의 사정이라기 보다는 원 간섭기라는 특수성에서 기인한 바가 크다. 충렬왕은 원의 실정을 파악하고, 원 조정에서 자신을 대변할 수 있는 인물을 황제의 측근에 둘 필요성을 느끼게 되었다. 이에 그가 생각해낸 것이 환관의 파견이었다. 1300년(충렬왕 26) 충렬왕이 보낸 고려 환관들은 고려국왕이 원 조정에 청원할 일이 있을 때마다 중요한 역할을 담당하였다. 이에 따라 고려정부는 환관에게 封君ㆍ授官할 뿐 아니라 그들의 친인척에까지 관직을 남발하거나 출신 지역까지 우대하였다. 원 또한 그들을 對麗 외교에 이용하거나 비밀유지가 용이하다는 점에서 그들을 중용하였다. 원에 보내는 환관수가 늘어남에 따라, 고려는 민가에서 차출하여 보내게 되었다. 이에 따라 원에 간 환관에 대한 고려정부의 영향력은 점차 줄어들게 되었다. 고려 국왕은 고려의 이익을 극대화시키려고 이들을 이용하려 했으나 충선왕 이후 원에 간 환관들은 오직 출세하기 위해 노력하였다. 그들은 고려 국왕이 그들의 왕이라는 관념조차 없었으니 임백안독고사의 충선왕에 대한 태도나 고용보의 국왕을 질책하는 모습은 원을 위해 무엇이든 할 수 있음을 나타낸다. 이에 따라 환관은 원 간섭을 벗어나면서 부원배의 대표적인 인물로 비난받았는데, 공민왕 시해에 가담하게 되면서 그들에 대한 부정적인 인식은 더욱 확산되었다. As majority of Hwan-guan[宦官]s were commoners or of humble origin, they could make success only through blind loyalty to their masters. Hwan-guans became major force during the reign of King Uijong. King Uijong hired hwan-guans to reinforce his power as they are loyal to him. The rise of hwan-guans during King Uijong period was a result of King’s use of them for political leverage over the nobility. When the power of king was weakened by the Rebellions of the Generals, the power of hwan-guans also declined. Hwan-guans became powerful during the period of Yuan’s intervention. From this period, Yuan’s intervention rather than internal situation gave Hwan-guans rise to power. After Chungseon Wang took the kingship from his father, the abdicated King Chungyeol Wang saw a need to arrange people near the Emperor representing his interest and get information about the dynasty. He dispatched 3 hwan-guans for this purpose. Yuan dynasty continued to ask Goryo to send hwan-guan and many hwang-guan were sent to Yuan’s palace. Some Yuan’s favored Goryo hwan-guans such as Bang Sin-Woo and Yi Suk played important roles when Goryo made petitions to Yuan. Chungyeol Wang’s such attempt to make close relations with Yuan was successful. Goryo government gave offices to Hwan-guans and to their relatives, and promoted their humble villages to ordinary counties. Yuan also hired Goryo hwan-guans at important positions to use them in foreign relations with Goryo. Keeping secrecy was an advantage to Yuan as the hwan-guans were foreigners. As more hwan-guans were requested by Yuan, Goryo had to recruit hwan-guans from ordinary civilians. Goryo’s influence over the hwan-guans in Yuan diminished and the hwan-guans began to work for Yuan’s interest. They did more harm to Goryo, especially, after Chungseon Wang, there were more hwan-guans who were favored by Yuan emperors. As the hwan-guans were dispatched to Goryo as imperial envoys, they pressed Goryo government and sought their own interests. Yuan emperors approved tacitly such misbehavior as long as they carried out their orders. Chungyeol Wang tried to maximize Goryo’s interests by using Goryo hwan-guans in Yuan palace, while the hwan-guans after Chungseon Wang sought for their own interests. They had no consideration for Goryo kings as shown in case of Imbaekandokkosa’s attitude toward Chungseon Wang and Goyongbo’s scolding at the king. When Goryo pulled out of Yuan’s intervention during the reign of Gongmin Wang, the hwan-guans were criticized as pro-Yuan followers. Especially at the end of Gongmin Wang period, when some hwan-guans were involved in the assassination of the king, the criticism on the hwan-guans was disseminated widely.

다발성 골수종 환자에서 발생한 혈소판 기능 장애

이정신 ( Jung Shin Lee ),이대호 ( Dae Ho Lee ),지현숙 ( Hyun Sook Chi ),서철원 ( Cheol Won Suh ),최준석 ( Jun Seok Choi ),박진욱 ( Jin Wook Park ),나수영 ( Soo Young Na ) 대한내과학회 2012 대한내과학회지 Vol.83 No.6

Multiple myeloma is a monoclonal plasma cell proliferation disorder with various symptoms and signs caused by paraproteinemias. Among these signs, a bleeding tendency is one of the major fatal causes. However, significant severe bleeding is rare in most cases. In this study, we report a case of multiple myeloma in a patient who had a severe recurrent bleeding tendency due to platelet dysfunction caused by paraproteins. After being treated with therapeutic plasma exchange and chemotherapy, the patient`s monoclonal protein level decreased and the bleeding stopped. (Korean J Med 2012;83:823-827)

친-소수성의 혼합 및 국부적 조절을 통한 풀 비등의 임계 열속 개선

이정신(Jung Shin Lee),이준상(Joon Sang Lee) 한국생산제조학회 2015 한국생산제조시스템학회 학술발표대회 논문집 Vol.2015 No.10

高麗時代 公州 鳴鶴所民의 蜂起에 대한 一硏究

李貞信(Lee Jung-Shin) 한국사연구회 1988 한국사연구 Vol.61·62 No.-

고려시대 임씨 세력의 연원과 분포

이정신(Lee, Jung-shin) 신라사학회 2015 新羅史學報 Vol.0 No.34

Jinwi-hyeon was a sub-hyeon(sub-county) of Suju and Pyeongtaek-hyeon was a sub-chyeon of Cheonan-bu in Goryo Era. Local families with surnames existed in the region but their power was not strong. When Taejo Wanggeon concilated the local family powers, he was interested in Chungju, Cheongju, and Jincheon as strategic areas. Taejo tried to incorporate the local power of Cheongju’s Yu family and Jincheon’s Im family from which Taejo’s 10th consort and Hyejong’s queen came. Cheongju area was also anti-cental government and Taejo Wanggeon tried to pacify the area by multiple visits and building walls, and he provided a preferential treatment to Chengju’s local power family. Pyeongtaek area had a significance as a center from which Im family power settled first and migrated throughout the country. Pyeongtaek area a combinded area of Jinwi-hyeon of Gyeonggi province and Pyeongtaek-hyeon of Chungcheong province. Located at the western sea coast area, it had a geographical advantage of having a trade with China, and it provided the reason to have a tale that Im family ancestor came from China. Pyeongtaek-hyeon had agricultural fields of 2,234 gyeols(15,447㎡) of which rice fields were three fifth, and Jinwi-hyeon had 2,841 gyeols of which rice fields was a half. According to Seo Geo Jeong, “offcials and people of Jinwi-hyeon sufferd from frequest visits by envoys and official visitors as it was located at the juction of three provinces.” Although Pyeongtaek was not a rich area this geographical factor contributed to the growth of Im family as one of nation’s big ten families. Im family of Pyeongtaek spreaded out to Joyang, Okgu, Yecheon, Buan, Sunchang, Seonsan, Eunjin, and Gilan. The offsprings of Im family settled in the new areas and promoted themselves to central officials. There were various reasons for them to migrate to new areas. Mostly they migrated as they moved to the areas where their in-law families lived, or fleed from political oppression and wars. They might fleed to avoid explotation of local officials or collection of debts, or they might seek the ways to live at the time of bad harvest, though evidences are rare. This also happened to other families in general in Goryo Era. 고려 초에 진위현은 수주 속현으로, 평택현은 천안부의 속현으로 있었다. 이들 지역에도 토성이 있었으나 지역세가 강하지 못하여 고려 초에 큰 세력을 떨친 것 같지는 않다. 태조 왕건이 후삼국을 통합하는 과정에서 호족세력들을 회유하였는데 당시 전략적 요충지로서 그의 관심대상은 충주, 청주 그리고 진천 등이었다. 따라서 태조가 그의 세력권 내로 편입시키려고 시도한 호족세력은 충주 유씨와 더불어 왕건의 10번째 비와 혜종의 비가 된 진천지방의 임씨세력이었다. 청주의 경우, 궁예에 의해 1,000여명이 사민될 정도로 반정부적이었다. 그러므로 고려를 건국한 왕건은 수차례의 순행과 축성, 그에게 협조적인 청주호족을 우대함으로서 민심을 회유하고자 하였다. 그러므로 고려시대의 평택지역은 임씨세력이 처음으로 거주하면서 각지로 분파된 중심지로서의 의미가 중요하다고 판단된다. 지금의 평택지방은 경기도 영역이던 진위현과 충청도 영역이던 평택현이 합쳐진 지역이다. 이곳의 지리상 이점은 서해안으로 바로 통할 수 있어 중국과의 교역이 쉽게 이루어질 수 있다는 점이다. 이것이 평택임씨 시조가 중국에서 건너왔다는 설화가 있게 된 이유라고 생각한다. 평택현은 《세종실록지리지》에 의하면 墾田이 2234결 중 논이 3/5 정도이며 진위현은 간전 2841결 중 논·밭이 반반이라고 한다. 특히 진위현의 경우, 서거정은 “3도의 요충지에 위치하여 사신과 빈객의 왕래로 백성과 아전이 번거로운 영접에 시달린다고 하였다. 평택이 크게 풍족한 지역은 아니었지만 이점이 오히려 각지로 뻗어나갈 토양을 조성해 오늘날 임씨는 10대 성씨 중 하나로 발전하지 않았나 생각된다. 평택 임씨는 조양, 옥구, 예천 부안, 순창, 선산, 은진, 길안 등 전국에 퍼져나가 각 지역에서 토착세력으로 자리잡아 중앙에 관원으로 등장하였다. 그들이 살던 지역에서 이주하게 된 원인은 다양하다. 그 중 가장 많은 이유는 처가나 외가를 따라 가거나, 혹은 정치적 탄압을 이유로, 국가로부터 사패를 받거나 전쟁을 피해서 이주한 것으로 판단된다. 혹은 속현에 대한 주군현의 수탈을 피해, 혹은 흉년이 들어 살기 힘들어서, 혹은 빚을 피해 도주하기도 했으리라 생각되지만 확실한 자료는 찾기 어렵다. 이는 평택 임씨에 한정된 것이 아니라 고려시대에 살았던 주민들의 일반적인 모습이라고 생각된다.

고려 무신집권기의 국왕 : 木偶를 거부한 군주

이정신(Lee Jung-shin) 한국인물사연구소 2004 한국인물사연구 Vol.2 No.-