블록체인 기반의 MPEG-IoMT 거래 프로세스

이경식,이경식 한국방송·미디어공학회 2018 방송과 미디어 Vol.23 No.3

최근 IoT 산업의 발달로 각 산업의 특색에 맞는 IoT 생태계를 구축하려는 옴직임이 활발하다. 이에 ITU-T, ISO, IEEE 등 여러 국제 표준화 기구에서는 완전 개방적인 사물 인터넷을 위해 공통된 표준의 필요성을 인지하고 활발히 논의 중이다. 특히, MPEG-IoMT(Internet of Media Things)에서는 탈중앙화된 미디어사물인터넷 시스템 구성을 위해 블록체인을 적용하려는 논의가 진행 중이다. 이에 본 투고에서는 블록체인과 MPEG에서 진행 중인 IoMT 프로젝트의 연관성에 대해 설명하고, 블록체인 기반의 미디어사물 간 거래 프로세스를 설명한다.

OECD 가입의 득과 실

이경식,Lee, Gyeong-Sik 대한석유협회 1996 석유와 에너지 Vol.1996 No.11

이 자료는 이경식 한국은행 총재가 8월 24일 현정부 출범 이후의 전직 장ㆍ차관 모임인 마포포럼 하계수련회에서 강연한 내용임. <편집자 주>

햄릿 왕의 혼령

이경식 서울대학교 2000 영학논집 Vol.24 No.-

흉부 전산화단층촬영에서 늑골을 세는 방법

이경식,김성진,전민희,이승영,배일헌 대한영상의학회 2007 대한영상의학회지 Vol.57 No.2

목적: 흉부 전산화단층촬영에서 늑골을 세는 각 방법의 정확도를 평가하고, 흉골늑연골관절을 이용하는 새로운 방법을 제시하고자 한다. 대상과 방법: 흉부 전산화단층촬영을 시행 받은 27명, 38개의 늑골 병변을 대상으로 하였다. (골절:25, 전이:11, 기타양성골질환:2). 각 병변은 3명의 영상의학과 의사가 독립적으로 흉쇄접근법(sternoclavicular approach), 흉골검접근법(xiphisternal approach), 수정된 흉골병접근법(modified sternomanubrial approach)의 3가지 방법을 이용하여 늑골을 세었다. 각 늑골 병변은 추가로 척추 위치에 따라 상부(제1 흉추~ 제4 흉추), 중부(제5~8 흉추), 하부(제9~12 흉추)로 분류한 후 특히 어느 부위의 늑골을 셀 때 오류를 범하게 되는지를 평가하였다. 결과: 수정된 흉골병접근법이 가장 정확도가 높은 방법이었으며(99.1%). 흉골검접근법과 흉쇄접근법의 정확도는 각각 95.6%, 88.6%였다. 수정된 흉골병접근법은 늑골의 위치에 따른 분류에서도 가장 높은 정확도를 보였다(각각 100%, 100%, and 97.9%). 결론: 본 논문에서 새로이 제시한 수정된 흉골병접근법은 늑골을 세는 방법들 중 가장 정확한 방법이었으며, 실제 임상에서도 더 쉽고, 빠르게 이용하는 방법이었다. Purpose: The purpose of this study was to evaluate the accuracy of each method of counting ribs on chest CT and to propose a new method: the anterior approach with using the sternocostal joints. Materials and Methods: CT scans of 38 rib lesions of 27 patients were analyzed (fracture: 25, metastasis: 11, benign bone disease: 2). Each lesion was independently counted by three radiologists with using three different methods for counting ribs: the sternoclavicular approach, the xiphisternal approach and the modified sternomanubrial approach. The rib lesions were divided into three parts for evaluation of each method according to the location of the lesion as follows: the upper part (between the first and fourth thoracic vertebra), the middle part (between the fifth and eighth) and the lower part (between the ninth and twelfth). Results: The most accurate method was a modified sternomanubrial approach (99.1%). The accuracies of a xiphisternal approach and a sternoclavicular approach were 95.6% and 88.6%, respectively. A modified sternomanubrial approach showed the highest accuracies in all three parts (100%, 100% and 97.9%, respectively). Conclusion: We propose a new method for counting ribs, the modified sternomanubrial approach, which was more accurate than the known methods in any parts of the bony thorax, and it may be an easier and quicker method than the others in clinical practice.

OLTP 워크로드에서 쓰기-웜 페이지에 대한 고찰

이경식,안미진,이상원 한국정보과학회 2023 정보과학회논문지 Vol.50 No.11

One of the most important purposes of buffer management policies is to cache frequently accessed data in the buffer pool to minimize disk I/O. However, even if frequently referenced pages are effectively stored, a small number of pages can still result in excessive disk I.O. This is because of write-warm pages, which are repeatedly fetched and evicted from the buffer pool. In this paper, we introduce a “(Write-)Warm Page Thrashing” problem and confirm the existence of write-warm pages. Specifically, we found that 10% of flushed pages accounted for 41% of writes. This could degrade the performance, particularly for flash memory devices with slow write speeds. Therefore, a new buffer management policy is required to detect and prevent such thrashing problem.

T.S.ELIOT의 Four Quartets에 나타난 時間槪念

李景植 漢城大學校 1977 論文集 Vol.1 No.1

In the course of Poetic life, T.S. Eliot seeked for Time and Timeless. He also experienced the time consciousness in the inner life of his. He started his poetic life as Symbolist, Metaphysicist and Imagist background, and in the background of his thoughts there are also several analogies: Pascal, T.E. Hulme, and Bergson. And so the writer discussed his works, especially Four Quartets on the ground that he had lived and wrote poems as religious poet. In order to understand Eliot's poetry it is necessary to define his idea of tradition because it is his main idea in his poetical works and his critical works. Eliot asserted that it involves historical sense which contains a perception, not only of the pastness of the past, but of its presence. Historical sense also involves a sense of the timeless as well as of the temporal, and involves a sense of the timeless and the temporal together. This historical sense makes a writer traditional. And it is at the same time what makes a writer most acutely conscious of his place in time, of his contemporaneity. But Eliot altered his opinion for the idea of tradition in his critical work 'After Stange God'. in this essay he expressed his opinion for the tradition especially as a literal point of view. And also he discussed in this essay more broad cultural and moral problems. In short, Eliot carried out his theory of tradition in all the works of his literary writings. In this treatise the writer attempted to prove the characteristics of his poems, 'The Waste Land' and 'Four Quartets' from the view point of Time and Timeless. He searched Time by way of form and meaning. In his early poem, especially 'Prufrock' and 'The Waste Land', His time consciousness is derived from Bergsonian time consciousness. It is nothing to say that his background of literary, critical, religious standpoint is the analogy of Humme's and Arnold's. In brief, he set his religious attitude on the consciousness of crisis which also was derived from Valery's and Pascal's. In 'The Waste Land' he diagnosed various diseases of modern society and modern man. So that he conformed his idea and his attitude to his poetical technique and form. From the early poems to the last, there runs a leitmotif of time and timeless. By analizing the time consciousness, he contrasted to past and past to present so that he performed real sense of order by means of historical sense. His last successful poetical work 'Four Quartets' appeared in 1943. He adopted musical form of Beethoven's in this poem. As he attempted to complete the unification of form and meaning and the contrast of the time past and the time present. Eliot confessed his religious creed in this poem. And so we can say this poem is the expression of his religious experience and religious agony in the long course of his poetical life. And also each Quartets stress Eliot's main preoccupation: the sense of time and timeless. Structurally 'Four Quartets' is intricate with closely interwoven themes and variations. It reveals design within design. Some of the patterns are considerably obvious in treating of four part harmoniously; the mixed symbols of four seasons and the four elements which are wind, earth, water and fire; the contrast of images; the dexterous alteration of slow unrhymed monolonges and rapidly rhymed lyrics. Above all, the refrain of time present and timeless is accompanied by a set of meditations on the difficulty of communications. Conclusively, this poem was Eliot's synthesis of his personality and his poems. He not only harmonized Greek thoughts and his christian thoughts but harmonized time and poetic form in 'Four Quartets'. He succeeded uniquely in developing the consciousness of time and timeless into his poetical form.

Preparation of Nursing and Midwifery Personnel for Family Planning Work: Progress, Problems, and Prospects

李璟湜 서울大學校 保健大學院 1968 公衆保健雜誌 Vol.5 No.2

Through a brief of recent hterature, the emerging role of nurse-midwives and their prep-aration for family planning work in terms of progress, problems and prospects are mentioned. The problem of vague or undefined lole of nurse-midwives in family planning field attributes to slow lecognition of importance of organized piepa-ration for the new and expanding roles in the field attributes to slow recognition of importance of organized plepa-ration for the new and expanding roles in the field

제 23 차 학술대회 : 117. 한국인 여성유암의 임상적 고찰

이경식,김병로,신극선,유민철,황규철 대한외과학회 1971 대한외과학회 학술대회자료집 Vol.- No.-

How to Write and Publish a Medical Paper

이경식 대한외과학회 1988 대한외과학회 학술대회자료집 Vol.- No.-

1982년 추계 전공의 연수강좌 : 갑상선암의 외과적 치료

이경식 () 대한외과학회 1982 대한외과학회 학술대회자료집 Vol.- No.-