그리드 환경의 적응형 오류 극복 관리 시스템 설계 및 구현

김은경,김지영,김윤희,Kim, Eun-Kyung,Kim, Jeu-Young,Kim, Yoon-Hee 한국정보처리학회 2008 정보처리학회논문지 A Vol.15 No.3

서비스 이동과 자원 상태 변화 등 실행 환경 변화가 빈번히 발생하는 그리드 컴퓨팅 환경은 다양한 응용 프로그램 작업 환경을 지원하고 사용자에게 끊임없는 작업 환경을 보장하기 위하여 고가용성을 지원하는 미들웨어가 필수적으로 필요하다. 기존의 분산 환경 미들웨어 역시 고가용성 지원 서비스가 일부 연구자에 의해 진행되고 있으나 공개표준은 아니며 다양한 그리드 서비스에 대한 고려가 없다. 본 논문에서는 환경에 따라 적응하는 서비스 미들웨어 런타임 서비스 관리 시스템을 통해 자율적으로 작업 환경을 재구성하도록 하여 미들웨어의 가용성을 증대시키고 안정적으로 서비스의 계속성과 데이터 및 자료의 일관성을 보장하는 방법을 제시하고 프로토타입 Wapee(Web-Service based Application Execution Environment)를 통해 실제 환경에서 적용 가능성을 확인한다. A middleware in grid computing environment is required to support seamless on-demand services over diverse resource situations in order to meet various user requirements [1]. Since grid computing applications need situation-aware middleware services in this environment. In this paper, we propose a semantic middleware architecture to support dynamic software component reconfiguration based fault and service ontology to provide fault-tolerance in a grid computing environment. Our middleware includes autonomic management to detect faults, analyze causes of them, and plan semantically meaningful strategies to recover from the failure using pre-defined fault and service ontology trees. We implemented a referenced prototype, Web-service based Application Execution Environment(Wapee), as a proof-of-concept, and showed the efficiency in runtime recovery.

알콕시 실란계 석재 강화제의 화강암 점착 특성 연구

김은경,손승환,원종옥,김정진,김사덕,Kim, Eun-Kyung,Son, Seung-Hwan,Won, Jong-Ok,Kim, Jeong-Jin,Kim, Sa-Dug 한국문화재보존과학회 2008 보존과학회지 Vol.23 No.-

Consolidants based on tetraethoxysilane (TEOS) such as alkoxysilanes have been widely used for the consolidation of decaying stone heritages. Low-viscosity alkoxysilanes penetrate inside the decaying stone and polymerize within the porous structure of the decaying stone, significantly increasing the cohesion of the material. However, TEOS-based consolidants suffer from practical drawbacks, such as crack formation of the gel during the drying phase due to the developed capillary force, which is typical for TEOS-based consolidants. We prepared new consolidants TEOS-based consolidants containing flexible (3-glycidoxypropyl)trimethoxysilane (GPTMS) and silica nanoparticles (or polyhedral oligomeric silsesquioxanes (POSS)) in order to reduce capillary force development during gel drying. Since the consolidants should have a good interaction with the component of the stone in order to connect the isolate grains of decaying stone, the adhesion interaction of the developed consolidants on the surface of the granite was macroscopically investigated by the ISO 2409 cross cutting test. The adhesion interaction decreased with the addition of silica nanoparticle and POSS while it increased with the addition of GPTMS in TEOS solution. 풍화된 석재 조직을 강화시키기 위해 사용되고 있는 점도가 낮은 tetraethoxysilane (TEOS)과 같은 알콕시실란(alkoxysilane)계 강화제는 석재 내부로 쉽게 침투하여, 솔-젤 반응을 통해 석재를 구성하고 있는 실리카와 같은 특성을 가진 망목상 구조인 젤을 형성하여 석재를 강화해 준다. 그러나 석재 내부에서 형성된 젤이 TEOS와 같이 딱딱하고 부서지기 쉬운 젤인 경우 건조 중에 균열이 일어나면서, 약한 석재 조직에서 2차 박리를 유도하는 문제점을 갖고 있다. 용매가 남아있는 젤을 건조시킬 때 발생하는 모세관 힘에 의해 생기는 균열을 방지하기 위한 방법으로 실리카 나노 입자나 polyhedral oligomeric silsesquioxanes (POSS)를 첨가해 망목상 구조에 의해 형성된 세공의 크기를 크게 하여 모세관 힘을 작게 하거나, 유연한 세그먼트를 갖고 있는 (3-glycidyloxypropyl)trimethoxysilane (GPTMS)를 도입하여, 젤 구조에 유연성을 도입하여 균열을 감소시킨 강화제가 개발되었다. 석재 강화제는 실제 석재를 구성하는 입자들의 표면에 잘 분산하여 솔-젤 반응 통해 입자들을 서로 연결해 주어야 하는 강화제들은 석재 성분들과 상호작용이 있어야 높은 강화효과를 기대할 있다. 본 연구에서는 석재를 구성하는 각 성분들과 강화제와의 상호작용을 거시적 ISO 2409 cross cutting test 방법을 이용한 점착력으로부터 유추하였다. 상업화된 TEOS계 석재 강화제와, 젤이 건조되는 동안 일어난 균열을 막기 위해 개발된 나노입자와 유기계 세그먼트가 첨가된 강화제를 화강암에 처리한 후 점착력을 비교 연구하였다. 나노미터 크기의 실리카나 POSS와 같은 나노입자가 첨가되면 석재와의 점착력이 감소하고, 유기계 세그먼트를 갖는 GPTMS를 첨가할수록 석재와의 점착력이 증가함을 확인하였다.

수열법에 의한 Li₄Ti₅O₁₂ Nanofibers 합성 및 전기화학적 특성에 관한 연구

김은경,최병현,지미정,권용진,서한,김영준,김광범,Kim, Eun-Kyung,Choi, Byung-Hyun,Jee, Mi-Jung,Kwon, Yong-Jin,Seo, Han,Kim, Young-Jun,Kim, Kwang-Bum 한국세라믹학회 2010 한국세라믹학회지 Vol.47 No.6

In this paper the effect of the structure, particle size, morphology of nanofibers and nanoparticles for the electrochemical characteristics of $Li_4Ti_5O_{12}$ was investigated. The $H_2Ti_2O_5{\cdot}H_2O$ synthesized in hydrothermal treatment from a NaOH treatment on $TiO_2$ by ion exchange processing with HCl solutions. After the $Li_4Ti_5O_{12}$ nanofibers synthesized in hydrothermal treatment of $H_2Ti_2O_5{\cdot}H_2O$ and $LiOH{\cdot}H_2O$. The hydrogen titanate precursor prepared by ion exchange processing with 0.1~0.3M HCl solutions and the final products calcined at $350^{\circ}C{\sim}400^{\circ}C$. The $Li_4Ti_5O_{12}$ nanofibers showed well reversibility during the insertion and extraction of Li, good cycle performance, high capacity and low electrochemical reaction resistance than nanoparticles. also c-rate exhibited a discharge capacity of 172 mAh/g at 0.2C and 115mAh/g at 5C, which is the 77%, 67% of that obtained in the process charged, discharged at 0.2C.

박경리 『토지』에 나타난 굴절(屈折)의 원리와 인물 정체성의 문제

김은경 ( Eun Kyung Kim ) 민족문학사학회·민족문학사연구소 2007 민족문학사연구 Vol.35 No.-

자궁경부 미소침윤성 편평세포암종의 세포학적 분석

김은경,김의정,박종숙,김희숙,Kim, Eun-Kyung,Kim, Yee-Jeong,Park, Jong-Sook,Kim, Hy-Sook 대한세포병리학회 1994 대한세포병리학회지 Vol.5 No.2

We studied cervical cytology of 175 cases of histologically confirmed microinvasive squamous cell carcinoma of the uterine cervix in Cheil General Hospital from 1991 to 1993. Excluding 32 cases of insufficient smear, 143 cases were reviewed in view of background, cellularity, smear pattern, nuclear chromatin and presence of nucleoli. The characteristic findings of microinvasive carcinoma were syncytia and/or individual tumor cells in the focally necrotic inflammatory background. Nuclear chromatin was clear or fine. Nucleoli were observed in 55%. The prediction rate of microinvasive carcinoma was 74%. There is no significant relationship between the cellular features and depth of invasion.

사랑서사와 박경리 문학

김은경 ( Eun Kyung Kim ) 서울대학교 인문학연구원 2012 人文論叢 Vol.67 No.-

In this essay, I discuss the fact that ``love between a man and woman`` is of great importance in the novels of Park Kyung-ri. The fact that the narrative of ``love`` includes extra-marital affairs and marriage relationships shows the viewpoint of the author which is based in reality. The various relations of love and marriage (family), poses problems on love itself, the family system, and marriage. I discover four kinds of extra-marital affairs in the novels of Park Kyung-ri which illustrate the intricate relationships between men and women: 1) extra-marital affairs derived from marriage disorders, 2) extra marital affairs between close relatives (elder brother`s wife and brother- in-law), 3) extra-marital affairs based on mutual feelings of love between the subjects of adultery, and 4) extra-marital affairs that pursue benefit and lust. Type 1) shows that ``the exclusiveness of romantic love``, meaning that only love can lead to marriage, can not be true within the boundaries of the institution. In type 2), the elder brothers` wives lead the adultery with their brothers-in-law. The elder brothers` wives who are widows or do not love their husbands (i.e. do not receive their husband`s love) recover the damaged relationship of ``love`` and ``marriage (family)`` in the family system. Types 1) and 2) result from the undifferentiated rela- tionship between ``love`` and ``marriage (family)``. Types 3) and 4) show how loveless marriages bring about adultery. In type 3), the husbands who married as a means of social success fall in love with the adultery subject. In type 4), the wives form the adultery relationship as a means of enjoying material, emotional and sexual pleasure, and exercising power. Through these narratives of adultery, the author shows the limitations of ``romantic love`` and criticizes loveless marriage. And she also shows the position of the female character that remains within the family system. These issues are discussed in Chapter 2. In Chapter 3, I discuss the issue of ``selective marriage``. The four types of extra-marital affairs do not derive from an intersection between love and the system of family. With selective marriage comes a true harmonization of love and the system of family, by differentiating the two values of ``love`` and ``marriage (family)``. The aspects facilitating ``selective marriage`` are as follows: 1) the female character has the position of a social being that does not stay within the system, 2) the characters accept the plural loves that are growing loves (or possibly growing loves), which I call the ``love of companion``, and 3) characters who experience the unnatural death of family put ``marriage (family)`` above ``love``. Through these discussions, I can reveal that ``the narratives of love`` represent the problem of ``love`` and ``marriage (family)`` in keeping with the realistic view. Park focuses on the continuation of the system of family through the narrative on extra-marital affairs. The novels of Park do not contain an overthrowing of the nature of the affairs or a beautification of love. They contain, rather, her insights on the limitations of female characters in the family system. This essay suggests that ``selective marriage`` is a feministic alternative to this.

생쥐 치아의 화학적 조성, 미세구조 및 Hydroxyapatite 구조 분석

김은경,전태훈,김창연,남승원,송경,이상길,김윤중,Kim, Eun-Kyung,Jeon, Tae-Hoon,Kim, Chang-Yeon,Nam, Seung-Won,Song, Kyung,Lee, Sang-Gil,Kim, Youn-Joong 한국현미경학회 2010 Applied microscopy Vol.40 No.3

본 연구에서는 광학 및 전자현미경 관찰과 전자현미분석을 수행하여 쥐 치아의 미세구조, 화학 조성 및 hydroxyapatite의 결정구조를 파악하였다. 치아의 겉 표면을 둘러싸고 있는 법랑질은 막대들이 일정하게 배열된 구조이며 결정도가 높고 Ca이 많이 침착되어 있다. 그에 비해 상아질은 상아세관이 통과하는 원형의 구멍이 고루 분포되어 있는 스펀지 구조이며 유기질의 존재로 인해 Mg의 분포가 법랑질에 비해 상대적으로 높게 나타났다. Hydroxyapatite 결정들은 법랑질에서는 크기가 큰 막대 형태로 나타났으나 상아질에서는 크기가 작은 침상 형태로 나타났으며, 각 조직의 결정도와 유기질의 유무에 따라 전자회절패턴의 차이를 보였다. The aim of this study is to determine microstructure, chemical composition and crystal structure of hydroxyapatite for mouth teeth using optical microscopy and electron microscopy as well as electron probe micro-analysis (EPMA). Enamel, a protective cover to the teeth, consisted of rods oriented in regular and had relatively higher crystallinity and Ca component. In contrast, dentin showed a sponge-like microstructure with circular holes which were passages of dentinal tubules, and had higher Mg component than the enamel region due to its higher organic content. Hydroxyapatite crystals appeared as large rods in enamel, but as small needles in dentin. Their electron diffraction patterns were different by their crystallinity as well as by the organic content of the matrix.

Globozoospermia를 가진 불임환자에서 미세정자주입술을 이용한 체외수정시술 후 임신과 분만 1례 보고

김은경,김은하,김은아,권황,홍재엽,최동희,Kim, Eun-Kyung,Kim, Eun-Ha,Kim, Eun-Ah,Kwon, Hwang,Hong, Jae-Yup,Choi, Dong-Hee 대한생식의학회 2010 Clinical and Experimental Reproductive Medicine Vol.37 No.1

목 적: Globozoospermia는 남성불임환자의 0.1%에서 발병되는 극히 드문 정자의 형태학적 이상 증상으로 본원에서 이 증례를 경험하여 문헌고찰과 함께 보고하는 바이다. 연구방법: 2회 반복적 임신에 실패한 불임기간은 6년인 32세의 부인, 36세의 남편 부부가 본원에 내원하였으며, 정액 특수염색결과 희소정자증을 동반한 globozoospermia로 판별이 되어 미세정자주입시술을 실시하였다. 결 과: 14개의 난자가 회수되었으며 이 중 총 12개를 미세정자주입시술을 이용 수정시도를 하였고, 이 중 5개가 수정이 되어 3일 배양 후 이식하였다. 이식 결과 임신이 되었으며, 임신 39주에 건강한 남아를 출산하였다. 결 론: Globozoospermia의 경우 ICSI(미세정자주입시술)방법을 실시하더라도 수정율이 낮다. 이에 수정율 및 임신율을 높일 수 있는 방법의 개발이 필요한 것으로 사료된다. Objective: Globozoospermia is observed in <0.1% of male infertile patients. The aim of this study is to report the successful clinical outcome in man with globozoospermia. Design: A case report. Method: A 36-year-old man and 32-year-old partner visited our fertility center with 6 years infertility duration. The semen analysis revealed globozoospermia combined with oligozoospermia which was stained with Diff-Quick method. ICSI (Intracytoplasmic sperm injection) was performed on 12 matured oocytes. Result: 5 injected oocytes were fertilized normally. 5 embryos were transferred on day 3 after oocyte retrieval. The patient became pregnant and delivered a healthy boy at 39 weeks of gestation. Conclusion: In case of globozoospermia, it has a low fertilization rate even though ICSI method is used. The favorable technique is still needed to increase the fertilization rate.

적외선 체열검사(DITI)로 복부냉증의 진단과 치료 경과를 평가한 단일 임상례

김은경,황덕상,이창훈,이경섭,Kim, Eun-Gyung,Hwang, Deok-Sang,Lee, Chang-Hoon,Lee, Kyung-Sub 대한한방체열의학회 2009 대한한방체열의학회지 Vol.7 No.1

Purpose: This study was performed to evaluate DITI (Digital Infrared Thermographic Imaging)'s potential for diagnosis and indicator of abdominal cold hypersensitivity treatment from the clinical case study. Methods: The patient was a 35-year-old woman who was suffered by general coldness, sweating and general pain. The patient was treated by Herb medicine, Acupuncture treatment, Moxa treatment and Physical Treatment. The progress of symptoms was evaluated by checking the change of VAS, and inspecting the DITI. We studied the statistical significance from the difference of DITI results before and after treatment by paired T-test using SPSS windows (version 12.0). Results: The general coldness, sweating and general pain of this patient have declined, especially the abdominal coldness improvement showing. As a results, the temperature of four abdominal sites(GV4,6,12,17) after treatment were statistically higher than those before treatment. With comparison of Indang, DITI difference of abdominal sites before and after treatment were statistically significant from paired T-tests. Conclusion: The results suggest that DITI can be used for the diagnosis and assessment of abdominal cold hypersensitivity treatment.

법랑질저형성증과 함께 나타난 치근부 상아질이형성증 -문헌고찰 및 증례보고-

김은경,Kim Eun-Kyung 대한영상치의학회 1989 Imaging Science in Dentistry Vol.19 No.1

The author observed a rare case of radicular dentin dysplasia associated with enamel hypoplasia in a 11-year-old boy with a complaint of gum boil formation. 1. Clinically. yellowish-brown colored teeth with severe attrition and several gum boils were observed. 2. Radiographically, obliteration of pulp chamber and root canal, multiple periapical radiolucencies without obvious cause and blunt roots were observed. 3. Systemically, scalp hair and eyebrows were loose and short. And saddle nose could be also seen.