중력을 고려한 저가형 2D DGPS/INS/Magnetometer 결합 차량 항법 측위 성능 향상에 관한 연구

학위논문 (석사)-- 서울대학교 대학원 : 기계항공공학부, 2017. 2. 기창돈.본 논문에서는 저가형 GPS(Global Positioning System) 수신기, MEMS IMU(Inertial Measurement Unit), Magnetometer를 이용한 차량의 항법 측위 성능 향상에 관한 알고리즘을 제안한다. Stand-alone GPS의 성능을 향상시키고자 사용자 주변에 있는 기준국의 보정정보를 이용하는DGPS(Differential GPS)를 이용하였다. 또한, 차량용 시스템을 개발하기 위해서 차량의 동적인 특성을 기반으로 시스템을 단순화하여 2D을 적용하였고, 단순화 과정으로 인해 발생하는 오차를 최소화하고자 실제 차량 주행 특성을 파악하여 IMU 센서 측정치 모델링을 개선하여 결과적으로는 시스템은 단순화하면서도 항법 해 성능은 유지할 수 있도록 하였다. 그리고 GPS/INS의 한계점인 차량이 정지하거나 저속으로 주행할 경우 Heading 정보가 발산하는 것을 Magnetometer를 추가함으로써 보완할 수 있도록 하여 최종적으로는 DGPS/INS/Magnetometer 결합 EKF(Extended Kalman Filter)를 구성하여 항법 해 성능 향상을 도모하였다. 구성한 차량용 DGPS/INS/Magnetometer 결합 EKF시스템을 검증하고자 simulation을 통해 이상 유무 판단 및 항법 해 성능 향상이 가능함을 검증하였고, 실제 차량에 시스템을 적용하여 후처리 분석을 통한 항법 해 성능 향상을 확인하였다.In this paper, we propose an algorithm for improving the navigation positioning performance of a land vehicle using a low cost Global Positioning System (GPS) receiver, a MEMS IMU (Inertial Measurement Unit) and a magnetometer. To improve the performance of stand-alone GPS, DGPS is applied using calibration information of the reference station around the user. In order to develop a land vehicle system, the system is simplified based on the dynamic characteristics of the land vehicle and 2D is applied. In order to minimize the error caused by the simplification process, the IMU sensor measurement modeling is improved by understanding the actual land vehicle driving characteristics, system is simplified and navigation performance is maintained. Furthermore, the addition of a magnetometer to compensate for heading information when the land vehicle stops or runs at low speed, which is the limit of GPS/INS, is supplemented. Finally, the DGPS/INS/Magnetometer combined Extended Kalman Filter (EKF) is constructed to improve navigation performance. To verify the EKF system combined with the DGPS/INS/Magnetometer for the land vehicle, it is verified that the simulation is able to determine the defect and improved the navigation performance, and the improvement of the navigation performance is confirmed by applying the system to the actual land vehicle.1. Introduction 1 1.1 Motivation and background 1 1.2 Research trends 3 1.3 Research content and method 4 1.4 Contribution of research results 5 2. GPS/INS/Magnetometer integrated navigation 6 2.1 GPS (Global Positioning System) 6 2.1.1 Types of GPS 7 2.1.2 GPS configuration 7 2.1.3 GPS error factor 9 2.1.4 GPS position determination method 10 2.1.5 DGPS (Differential GPS) 14 2.2 Inertial Navigation System (INS) 17 2.2.1 INS overview 17 2.2.2 Coordinate system definition 18 2.2.3 INS type 22 2.2.4 INS configuration and error factors 23 2.2.5 IMU sensor analysis 24 2.3 GPS/INS integration 27 2.3.1 GPS/INS integrated navigation overview 27 2.3.2 GPS/INS integrated navigation limit 28 2.4 Magnetometer 29 2.4.1 Magnetometer overview 29 2.4.2 Magnetometer error factor and correction method 29 2.5 GPS/INS/Magnetometer integration 31 2.5.1 GPS/INS/Magnetometer algorithm overview 31 2.5.2 2D Extended Kalman Filter for land vehicle 31 3. Simulation 39 3.1 Simulation data generation 39 3.2 2D Extended Kalman Filter algorithm for land vehicle verification 44 3.2.1 Simulation scenario 44 3.2.2 Simulation result 45 4. Actual experiment 50 4.1 System configuration 50 4.1.1 Considerations when processing actual data 50 4.1.2 Extended Kalman Filter reflecting actual data characteristics 55 4.1.3 Extended Kalman Filter Tuning 61 4.1.4 Heading alignment 63 4.2 Configure the experiment environment and scenario 64 4.3 Actual experiment result 67 4.3.1 Compare results before and after considering gravity 67 4.3.2 Analyzing the results of gravity considerations 69 5. Conclusion and future work 77 6. References 79 초 록 83Maste

Functional Surface Coating on Magnesium to Improve Corrosion Resistance and Biocompatibility for Biodegradable Medical Applications

학위논문 (박사)-- 서울대학교 대학원 공과대학 재료공학부, 2017. 8. 김현이.Biodegradable implants were suggested as an ideal biomedical implant due to the elimination of a second surgery to remove the devices after the healing of the surrounding tissues. Magnesium (Mg) and its alloys have gained considerable attention as a promising biomaterial for biodegradable implants due to the outstanding mechanical properties and biocompatibility, especially in dental, orthopedic and vascular stent applications. However, despite the significant advantages of Mg, the excessively high corrosion rate of Mg and its alloys is one of the major drawbacks for clinical use of Mg-based implants. Therefore, in order to not only decrease the degradation rate but also enhance the biological responses to improve the function of the implant, various functional surface treatments have been performed. In the first study, PEI-Silica hybrid coated biomimetic Mg was fabricated for dental and orthopedic application. By mimicking the structure and component of the bone, biodegradable Mg implant with high strength and pore interconnectivity and good osteoconductivity can be acquired. Bone has structure with combined dense and porous structure resulting in high strength/density ratio. Furthermore, it is composed with hydroxyapatite (HA) which has excellent osteoconductivity. By spark plasma sintering and space holder process Mg scaffold with combined dense/porous structure can be fabricated. Due to the bone-mimicking structure, Mg implant can have high strength and stiffness with high pore interconnectivity. Moreover, by controlling the ratio of dense structure, mechanical strength and stiffness can be controlled. By aqueous precipitation coating method HA can be coated on the Mg implant. This HA layer can enhance both corrosion resistance and biocompatibility with osteoblast cells. However, cracks form on HA coating layer due to the brittle property of HA. These cracks could be critical in corrosion and biological behavior on porous Mg due to complex shape and large surface area. Consequently, PEI-Silica hybrid layers were dual coated on the bone-mimetic Mg. Due to the high corrosion resistance of PEI and excellent bioactivity of silica, corrosion rate of bone-mimetic Mg decreased remarkably and both biocompatibility and bioactivity with bone tissue were enhanced. Thus, PEI-Silica hybrid coated biomimetic Mg implant could be a promising biodegradable scaffold for dental and orthopedic applications. In the second study, selective PEI/PLGA dual layer was coated on Mg for the biodegradable drug eluting stent application. Corrosion rate of Mg stent is need to be slowed down to maintain the scaffolding ability until the revascularization has been finished. Moreover, anti-proliferative drug is needed to be released to prohibit restenosis. To achieve these needs, Mg stent was selectively coated with PEI/PLGA dual layer by spray coating process. PEI was fully coated on the surface of the Mg stent to decrease the fast corrosion rate and improve the biocompatibility with endothelial cells. Subsequently, sirolimus loaded PLGA was selectively coated on abluminal side of the Mg stent to control the release of the drug to the wall of the blood vessel. This selective drug release can prohibit the proliferation of smooth muscle cells and prohibit the anti-proliferative effect to endothelial cell on luminal side of the Mg stent. Thus, selective PEI/PLGA dual coating on Mg stent offers a promising approach for the development of biodegradable drug eluting vascular stent application. In conclusion, these researches were about improving the functions of the Mg implant by enhancing the corrosion resistance and biocompatibility with stable surface coatings for various biomedical applications. The degradation tests and in-vitro cell tests showed the PEI-Silica hybrid coating and selective PEI/PLGA dual coating had effectively enhanced corrosion protection and cellular responses of Mg implant offering excellent function for dental/orthopedic application and vascular stent application respectively.Chapter 1. Introduction (Theoretical Review) 1 1.1. Potential of Mg for biodegradable implants 2 1.2. Limitation of Mg in physiological environment 3 1.3. Surface coating to control the corrosion of Mg 5 1.3.1. Surface coating 5 1.3.2. Bio-ceramic coating 6 1.3.3. Bio-polymer coating 8 Chapter 2. PEI-Silica Hybrid Coating on Biomimetic HA Coated Porous Mg for Dental and Orthopedic Applications 15 2.1. Introduction 16 2.2. Experimental procedure 21 2.2.1. Fabrication of porous Mg 21 2.2.2. Fabrication of biomimetic porous Mg 21 2.2.3. HA/PEI-Silica hybrid coating 22 2.2.4. Characterization of Mg scaffold 23 2.2.5. Mechanical behavior of Mg scaffold 24 2.2.6. Characterization of HA/PEI-Silica hybrid coating 25 2.2.7. In-vitro corrosion behavior evaluation 25 2.2.8. In-vitro biological behavior evaluation 26 2.2.9. In-vivo biodegradation and bone response evaluation 27 2.2.10. Statistical analysis 28 2.3. Results and discussion 29 2.3.1. Physical and chemical structure of porous Mg 29 2.3.2. Mechanical behaviors of porous Mg 31 2.3.3. Physical structure of biomimetic porous Mg 31 2.3.4. Mechanical behaviors of biomimetic porous Mg 33 2.3.5. Morphology and chemical structure of HA/PEI-Silica coating layers 33 2.3.6. Hydrophilicity of HA/PEI-Silica coating layers 36 2.3.7. In-vitro corrosion behavior of HA/PEI-Silica coated porous Mg 37 2.3.8. In-vitro biological behavior of HA/PEI-Silica coated porous Mg 39 2.3.9. In-vivo biodegradation and bone response 40 2.4. Conclusions 42 Chapter 3. Selective PEI/PLGA Dual Coating on Mg for Biodegradable Drug Eluting Stent Applications 68 3.1. Introduction 69 3.2. Experimental procedure 73 3.2.1. Sample preparation 73 3.2.2. Characterization of selective PEI/PLGA coating 75 3.2.3. In-vitro dynamic degradation test 75 3.2.4. Release behavior of sirolimus from PEI/PLGA coated Mg 76 3.2.5. In-vitro biocompatibility test 77 3.2.6. Statistical analysis 80 3.3. Results and discussion 81 3.3.1. Characterization of selective PEI/PLGA dual coated Mg stent 81 3.3.2. Corrosion behavior of selective PEI/PLGA coated Mg stent 83 3.3.3. Drug release behavior of PEI/PLGA coated Mg stent 84 3.3.4. In-vitro biocompatibility test 85 3.4. Conclusions 88 Chapter 4. Conclusions 106 4.1. Conclusions 107 Reference 110 초록 (Abstract) 120Docto

Eyelid Changes Related to Meibomian Gland Dysfunction in Early Middle-Aged Patients Using Topical Glaucoma Medications

Purpose:To investigate the relationship between topical glaucoma medications and meibomian gland dysfunction (MGD) in early middle-aged patients with glaucoma.Methods:In this cross-sectional study, 50 patients with glaucoma younger than 50 years who had used topical glaucoma medications for more than 6 months and 40 normal controls of similar age were included. Patients in each group were graded for MGD (0-4) using slit-lamp microscopy. Tear film breakup time (BUT), ocular surface staining, and Marx line scores were also evaluated. Differences between both groups were analyzed statistically.Results:The prevalence of MGD was 82% in the group using topical glaucoma medications and 52.5% in the control group. The average period of topical glaucoma medication use was 27.4 months. There were significant differences in the breakup time and Marx line score according to the presence of MGD. Although the duration of topical glaucoma medication use and the severity of MGD did not show a significant correlation, the degree of MGD and the Marx line score were significantly correlated.Conclusions:Glaucoma eye drops may be one factor affecting the eyelid changes associated with MGD. The Marx line score may be used as an index to evaluate MGD in patients with glaucoma

두보 배율 연구

학위논문(박사) --서울대학교 대학원 :중어중문학과, 2007.Docto

王昌齡 七言絶句 硏究

학위논문(석사)--서울대학교 대학원 :중어중문학과 문학전공,1998.Maste

The Present State and Suggestions on General Classical Chinese Education in Seoul National University

한국 대학의 한문 교육은 크게 전공 영역과 교양 영역으로 나눌 수 있다. 전공으로 한문을 집중적으로 가르치는 한문학과와 한문교육학과가 설치된 대학도 있으며, 전국 대부분의 대학에 있는 국문과·중문과·사학과·철학과 등 국학이나 동양학과 관련된 다수 학과에서 적지 않게 한문을 교육하고 있다. 전공으로서의 한문 교육은 학문 후속 세대나 한문 교사 등을 양성하는 것이 주된 목적이기에 학생들의 학습 욕구도 비교적 강하고, 전공 필수 등으로 의무적으로 수강을 해야 하는 상황이기에 학생들의 상황이나 교수법 등에 대한 고민이 상대적으로 적다. 또한 교재도 사서(四書) 등의 경전이나 역사서, 문학작품 등을 그대로 사용해도 무방하기에 교재에 대해서도 특별히 신경 쓸 필요가 적다. 그래서 대학 한문 교육에서 전공영역에 대한 연구는 한문교육학과와 관련된 논의를 제외하고는 그다지 많지 않은 편이다.Classical Chinese education at Seoul National University (SNU) is also experiencing the decrease of student enrollments and the number of classes. Among various possible reasons, the discrepancy between program curricula and student needs has worsened the problem. SNU, therefore, reorganized its curriculum offering 'Elementary Classical Chinese 1' and 'Elementary Classical Chinese 2' in place of 'Classical Chinese 1.' This change helped students to select the right level of classes and instructors to differentiate the course contents. Also, the transition to 'Intermediate Classical Chinese' has become smoother. Another change is editing and improving current textbooks, as textbooks play a major role in classes. The previous textbook contained too much text from many different genres, and hence much of it was not covered in class and it placed heavy burden on students. The 2002 edition of Elementary Classical Chinese reduced its content, provided detailed explanations, and organized its contents based on the themes which allowed students to enhance their content knowledge and have meaningful discussions. The new textbook is currently being rewritten to maximize existing merits while meeting the needs of the new curriculum. In terms of teaching methods, Classical Chinese education should not adopt reading and translation-based instruction. Lastly, for effective teaching and learning, the maximum number of students in Classical Chinese classes should be reasonable as in other foreign language classes in general education

Compressive optic neuropathy secondary to Ewing sarcoma in the paranasal sinus A case report

Rationale: Ewing sarcoma localized in the paranasal sinuses, compressing the optic nerve, is very rare, with no prior case reportsPatient concerns: A 68-year-old woman presented with decreased visual acuity in her left eye and paresthesia of the left face. Brain magnetic resonance imaging showed heterogeneously enhancing mass in the left paranasal sinuses with adjacent bone destruction, extending to the extraocular muscles and optic nerve of the left orbit. A biopsy of the nasal cavity confirmed Ewing sarcoma.Diagnosis: Compressive optic neuropathy secondary to Ewing sarcoma in the paranasal sinuses.Intervention: Neoadjuvant chemotherapy and radiotherapy were performed.Outcomes: Resolution of the tumor and increased visual acuity and field of the left eye.Lessons: Primary head and neck Ewing sarcoma can lead to compressive optic neuropathy, but the tumor responded well to the chemotherapy. Early diagnosis and immediate treatment by close cooperation between the ophthalmologist and oncologist can prevent from permanent visual loss.This work was supported by the research fund of Hanyang University (HY-201800000000614)

광 버스트 스위칭 망에서 데이터 버스트를 생성하기 위한 콘트롤 패킷 구조와 방법

A control packet of an OBS network comprises a label which is switched for fast transmitting each packet from a source host to a corresponding destination host, a wavelength ID for distinction of channel and switching, a CoS field providing different type of CoS, an offset time indicating the difference between an arrival time of the control packet and an arrival time of the data burst, a data burst size and a CRC for error detecting. A data burst generation algorithm uses hysterisis characteristics in the queueing model for an ingress edge node in an optical burst switching network. This algorithm adaptively changes the data burst size according to the offered load and offers high average data burst utilization with a lower timer operation

Tuberculosis diagnosis using gold nano-particles

의생명과학전공/석사결핵 검사를 위해 사용되는 표준 검사법은 오랜 시간이 소요되고 민감도와 특이도에 한계가 있어 최근 새로운 검사법들이 연구, 개발되고 있다. 본 연구에서는 금 나노 입자를 이용한 결핵균 검사법 개발을 위한 금 나노 입자 합성의 최적화된 방법을 연구하였다. 결핵 검사를 위한 금 나노 입자를 합성하고 입자의 크기와 균일도 및 흡광도를 비교한 결과, 15 ㎚의 금 나노 입자를 합성할 때 금 나노 입자의 크기가 균질하였다. 한편, 금 나노 입자와 결핵균 특이 프로브의 결합은 pH 7.0의 washing buffer와 pH 8.3의 re-suspend buffer를 사용하였을 때 결핵균군 특이 프로브와 표적물질인 Mycobacterium bovis BCG 16S rRNA와의 결합이 최적화되는 것으로 나타났다. 또한, 0.2 M의 MgCl2를 사용했을 때 240 분이 소요되던 응집반응이 40분으로 단축되어 신속한 진단에 유용한 조건을 확립하였다. M. bovis BCG 균을 파쇄하여 얻은 상층액에 존재하는 16S rRNA를 표적물질로 사용하여 결핵균군 특이 프로브가 부착된 금 나노 입자의 M. bovis BCG 균 검출 민감도를 확인한 결과 105 CFU/㎖였으며 M. smegmatis 와 Escherichia coli를 이용하여 특이도를 확인하였다. 본 연구의 결과는 향후 금 나노 입자를 이용한 다양한 진단법 개발에 도움이 될것으로 사료된다ope

시론과 불 이미지를 중심으로

학위논문(석사)--서울대학교 대학원 :인문대학 국어국문학과,2020. 2. 신범순.본고는 정지용 문학이 지닌 근본 주제를 내면공간의 시학이란 관점에서 분석하여, 정지용의 수필 및 시편을 일관적으로 해석할 수 있는 틀을 마련 하고자 한다. 내면공간이란 릴케의 개념으로, 정신이나 영혼의 영역을 외부 현실 세계보다 광활한 공간으로 인식되는 데에서 나아가 세계와 사물들의 본질이 밝혀짐으로써 시가 산출되는 무한한 시(詩)-공간으로서 의미화된 다. 내면공간의 시학은 가시적인 것의 비가시화를 중시한다. 가시적인 사물들의 세계가 변용 및 전환을 통해 시공간이 해체된 후, 새로운 시 (詩)-공간으로 재편되는 것이다. 그동안 정지용 문학은 주로 비가시적인 영역을 가시화하는 방법론을 취하는 것으로 여겨져 왔다. 시는 언어와 Incarnation적 일치다(「시와 언어」)나 안으로 열(熱)하고 겉으로 서늘옵기(「시의 위의」)와 같은 시론 에서의 언급은 이러한 관례를 뒷받침하는 것으로 보인다. 그러나 다른 시론 「시와 발표」는 박용철의 「시적 변용에 대해서」를 능동적으로 계승하고 있는데, 「시적 변용에 대해서」가 릴케의 시학을 인용하고 수용했다는 점을 주목할 만하다. 「시와 발표」의 이러한 특징을 고려하면 정지용이 다른 시론에서도 공간화된 내면에서 가시적인 것이 비가시화되는 메커니즘을 은연중에 강조하였음을 알 수 있다. 요컨대 정지용은 후기 시론에서 박용철 그리고 릴케와의 삼각 구도를 형성하며 내면공간의 시학을 통해 시의 본질을 희구했다. 다만 내면공간의 시학이 후기에 이르러서야 적용되었던 것은 아니다. 정지용은 릴케와의 접점을 기대하기 힘든 초·중기 시편에서도 모종의 내적 공간에 대한 애착을 드러냈다. 이러한 공간에는 항상 불의 이미지가 결합 되어 있는데, 즉 정지용의 불 이미지는 내재성(內在性)을 띤다는 특징이 있다. 초·중·후기 시편에 이르기까지 정지용의 불 이미지는 공간 안에 거하는 기호로 계속 자리매김한다. 본고에서는 이러한 불 이미지를 「시적 변용에 대해서」에서 시 쓰기의 필연성을 가리켰던 무명화(無名火) 개념에 상응하는 것으로 보고자 하며, 그렇다면 정지용 시는 일종의 메타시 (Metapoetry)로서의 의미도 지니게 된다. 초기 시편부터 시학적 주제를 기호를 통하여 형상화해왔기에 후기에 릴케의 내면공간의 시학을 수용할 수있었던 것이다. 2장에서는 먼저 1930년대에 박용철·임화·김기림 세 논자를 중심으로 전개 되었던 기교주의 논쟁을 살피고자 한다. 이 논쟁의 가장 큰 쟁점이었던 기교(技巧)/기술(技術)의 구분 문제가 박용철에게 시의 본질을 사유하게끔 하는 계기가 되었으며, 이로써 「시적 변용에 대해서」가 쓰일 수 있었기 때문이다. 「시적 변용에 대해서」는 기교주의 논쟁이 닿을 수 없었던 시의 창작 원리를 기술(奇術)이란 새로운 개념어로 보완하였다. 변용과 체험 등 내면공간의 시학과 결부된 릴케의 개념들이 활용되었으나 박용철의 요절로 시론은 더 발전하지 못했고, 이 작업은 1939년 『문장』에 발표된 일련의 시론들에서 정지용에 의해 명맥을 이을 수 있었다. 정지용은 시론 곳곳 에서 박용철과 릴케의 시론을 적절하게 배합하여, 내면의 중요성을 강조하는 시학적 입장을 성공적으로 정립했다. 3장에서는 2장에서 정지용의 시론이 산출될 수 있었던 배경으로서 정지용 시편을 초기·중기·후기로 나누어 분석한다. 정지용의 시 세계에 드러난 내 면공간의 변모 양상과 그러한 변모를 추동해내는 불 이미지의 변천을 살피 고자 한다. 초기 시편은 주로 교토 유학 시절부터 『시문학』 창간 이전까지 창작된 시편들을 포괄하여 이른다. 일본어 산문 「시·개·동인」을 비롯한 글들은 「카페 프란스」의 주요 공간인 카페 프란스를 이국 정조와 방랑의 공간이 아니라, 예술가 공동체가 형성되고 문학적 야심이 싹트는 공간이 었음을 암시한다. 이때 정지용에게 안온한 공간으로서의 방 안이 자주 등장하며, 방의 기호는 교토 체험이 깃든 근대 도시 거리에 파묻힌 방과 아픈 어린아이를 돌보는 방으로 양분된다. 후자에서 주로 숯불이나 석탄불 등의 소박한 불 이미지가 등장하고, 이것은 어린아이의 내열(內熱)과 엮이 면서 불이 내재성을 확보한다. 중기 시편은 흔히 가톨릭 시편으로 분류하는 것이 관례였다. 그러나 한편 으로 이 시기는 박용철과의 교류가 시작된 시기이기도 하다. 가톨릭 시편이라는 선입견에 가려졌던 중기의 불 이미지는 영혼 안에 거하는 것으로 나타나면서 초기보다 고고한 색채를 띠게 된다. 불에 초월적이고 신성한 이미 지를 더한 것은 비단 가톨릭뿐만 아니라 박용철과의 교류에서 비롯되었을 것이다. 이 시기 정지용은 이미 박용철과 교류를 통해 릴케를 알게 되고 자신의 시론을 정립할 필요성을 느꼈을 것이다. 이들의 후기 시론의 단초는 「무제」를 비롯한 중기 시편에서 발견된다. 후기는 박용철의 죽음 이후 시론이 창작되면서, 동시에 『문장』이 창간 되고 『백록담』이 발간된 시기다. 친한 벗의 죽음은 정지용에게 내면공간 의 총체적 의미를 다시 사유하게 하는 계기가 되며, 이로 인해 불의 내재성도 양상을 달리하게 된다. 후기 시편은 주로 물과 산 이미지 위주로 분석되어 왔으나, 「온정」, 「삽사리」, 「인동차」 그리고 「도굴」 등 의외로 많은 작품에서 불 이미지가 변주됨을 주목해야 한다. 블랑쇼가 릴케를 분석 하면서 언급했던 열린 내밀성이란 이율배반이 후기 시편에서 실현된다. 삶과 죽음, 물과 불 등 대립적인 것들을 통합하여 내면공간을 확장하려는 사유가 후기 시편, 나아가 정지용 문학 전체의 정수(精髓)로 거듭난 것이다.This study analyzes the fundamental themes of Jeong Ji-yong literature in terms of the poetics of 'inner space' to prepare a framework for the consistent interpretation of essays and poetry. Inner space is the concept of Rilke, meaning that the realm of the mind and soul is a wider space than the outer real world, and that the meaning of the world and objects is revealed as an infinite 'poetry' -space in which poetry is produced. The poetics of inner space emphasize 'invisibility of the visible'. The world of visible objects is reorganized into a new 'poetry'-space after the space-time is dismantled through 'transformation' and 'transition'. In the meantime, Jeong Ji-yong literature has been regarded as taking a methodology that mainly visualizes invisible areas. "Poetry is consistent with language as Incarnation." or "Warm inside and cool outside" is to support these conventions. However, an essay named 「Poetry and Publication」 inherits Park Yong-cheol's 「About Poetic Transformatio n」, and it is noteworthy that 「About Poetic Transformation」 cited and accepted Rilke's poetics. Considering these features of 「Poetry and Publication」, it can be seen that Jeong Ji-yong emphasized the mechanism by which the visible within the spatialized 'inside' is being also invisible. In short, Jeong Ji-yong formed a triangular composition with Park Yong-cheol and Rilke in the late-term essays and sought the essence of poetry through the poetics of 'inner space'. However, the poetics of 'inner space' were not applied until late-term. Jeong Ji-yong showed some attachment to the 'inner space' even in the early and mid-term poetry, where it was difficult to expect a contact with Rilke. This space has always been combined with the image of the "fire", thus fire image of Jeong Ji-yong is characterized by immanence. From the early, mid, and late-term, the image of fire continues to be a symbol inherent in space. This study would like to see this image of fire as equivalent to the concept of Unnamed fire, which refers to the 'necessity' of poetry writing in 「About Poetic Transformation」, and if so, Jeong Ji-yong poetry also has a meaning as a kind of metapoetry. From the early poetry, the poetic theme has been shaped through signs, so that Rilke's poetics of 'inner space' could be accommodated in the late-term . In Chapter 2, this study will first examine the 'Artistry debate' which was developed around three scholars, Park Yong-cheol, Im Hwa, and Kim Ki-rim. The problem of distinguishing between 'Artistry'(技巧) and 'Technique'(技術), the biggest issue of this debate, gave Park Yong-Cheol to think about the essence of poetry, so that 「About Poetic Transformation」 was able to be written. 「About Poetic Transformation」 supplements the creative principle of poetry, which the artist debate could not reach, with the new concept of Trick(奇術). Although Rilke's concepts associated with the poetry of the inner space, such as Transformation and Experience, were used but the poetics did not improve because of an early death of Park Yong-cheol, this work was able to be linked by Jung Ji-yong in a series of essays published in 1939 『Munjang』. Jung Ji-yong successfully formulated the poetic positions that emphasized the importance of 'inside' by combining Park Yong-cheol and Rilke's theories in various places. Chapter 3 analyzes the poems for stops in the early, middle, and late periods as the background for the theory in Chapter 2. It would like to examine the transformation of 'inner space' revealed in the world of Jeonng Ji-yong's poetry and the image of fire that drives such transformation. The early poetry mainly included the poems created from studying in Kyoto until the publication of 『Simunhak』. Writings including Japanese prose 「Poetry, Dog, and Group」 suggest that 'Café France', the main space of 「Café France」, was not a space of exoticism and wandering but a space where artists' communities were formed and their literary ambitions sprouted. At this time, the 'room' as a relaxing space in Jeong Ji-yongs poetry often appears, and the symbol of the room is divided into a room buried in a modern city street and a room for caring for a sick child. In the latter, a simple image of fire such as 'charcoal fire' or 'coal fire' emerges, which is intertwined with the child's heat, and the fire secures intrinsic resistance. Mid-term poetry were often categorized as Catholic poetry. On the other hand, this is also the time when exchanges with Park Yong-cheol began. The medium-sized fire image, hidden by the preconceived notion of the Catholic Psalm, appears to be dwelling in the 'soul' and has a higher color than the early days. The addition of a transcendent and sacred image to fire may have originated not only from Catholics but also from Park Yong-chul. During this period, Jeong Ji-yong would have already come to know Rilke through exchanges with Park Yong-chul and felt the need to establish his own theories. Their early poems are found in mid-term psalms, including 「Untitled」. The latter period is the time when the poem was created after Park Yong-chul's death, and at the same time, 『Munjang』 was published and 『Baekrokdam』 was published. The close friend's death causes Jung Ji-yong to rethink the overall meaning of 'inner space', which causes the inherent nature of fire to change. Later poetry have been analyzed mainly on water and mountain images, but it should be noted that the fire image is variably transformed in many works, such as 「Warm well」, 「Sabsari」, 「Honeysuckle tea」, and 「Tomb theft」. The 'open secrecy' mentioned by Blanche in his analysis of Rilke is realized in later poetry. The thought of expanding 'inner space' by integrating oppositional things such as life and death, water and fire was reborn as the essence of the late poetry and even the core of the entire Jeong Ji-yong literature.1. 서론 1 1.1. 문제제기 및 선행연구 검토 1 1.2. 연구의 시각 10 2. 박용철릴케와의 공명을 통한 내면공간의 시학 정립 23 2.1. 기교주의 논쟁과 기술(技術)에 대한 제안 23 2.2. 내적 필연성으로서의 무명화(無名火)와 기술(奇術)로 서의 변용 38 2.3. 안으로는 열(熱)한 것과 내면의 조각법 모색 50 3. 내면공간 시학을 구성하는 불 이미지의 변모 과정 64 3.1. 초기 시편의 아이 모티프와 내적 에너지의 발견 64 3.2. 중기 시편에 나타난 영혼과 고고(孤高)의 문제 86 3.3. 내면의 확장적 인식을 통한 후기 시편의 전개 104 4. 결론 116Maste