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      • KCI등재

        SOME INTEGRAL INEQUALITIES IN THE FRAMEWORK OF GENERALIZED K-PROPORTIONAL FRACTIONAL INTEGRAL OPERATORS WITH GENERAL KERNEL

        ( Juan E. N´apoles Vald´es ) 호남수학회 2021 호남수학학술지 Vol.43 No.4

        In this article, using the concept proposed reciently by the author, of a Generalized k-Proportional Fractional Integral Operators with General Kernel, new integral inequalities are obtained for convex functions. It is shown that several known results are particular cases of the proposed inequalities and in the end new directions of work are provided.

      • 구조적 분석 / 설계 지원 도구에 관한 연구

        진은숙(ES.Jin),김태훈(TH Kim),홍의석(ES Hong),최순규(SK.Choi),김희천(HC.Kim),이종석(JS Lee),이형원(HW Lee),우치수(CS Wu) 한국정보과학회 1992 한국정보과학회 학술발표논문집 Vol.19 No.2

        CASE 시스템은 소프트웨어 개발의 전체 생명 주기를 지원하는 일관성있고 종합적인 개발 환경으로, 기존의 워크스테이션 환경의 한계와 문제점인 도구의 통합성 결여, 방법론의 적용 부족 등으로 인한 생산성 향상의 문제점들은 CASE 시스템의 이용을 통하여 극복될 수 있다. 그러나, 현재 자체 개발 기술의 부족으로 국내에서 사용되고 있는 상품화된 CASE 시스템은 거의 외국에서 수입하여 사용하고 있는 상태이므로 국내 현실에 맞는 CASE 시스템의 개발이 절실한 실정이다. 본 논문에서는 현재 개발 중인 통합 CASE 도구인 ADVISE 중, 생명 주기 전반부를 지원해 주는 ADVISE/SA와 ADVISE/SD에 대해 기술하였다. ADVISE/SA는 자료 흐름도 편집기, 자료 사전 지원 도구, 결정표 지원 도구, 객체 관계도 편집기, 명세서 분석기 등으로 이루어져 있으며 ADVISE/SD는 구조도 편집기, 모듈 명세서 지원 도구, 명세서 분석기로 이루어져 있다.

      • KCI등재후보

        Optimal Berry-Esséen bound for maximum likelihood estimation of the drift parameter in -Brownian bridge

        Es-Sebaiy Khalifa,Jabrane Moustaaid 한국통계학회 2021 Journal of the Korean Statistical Society Vol.50 No.2

        Let T > 0, > 1 2 . In the present paper we consider the -Brownian bridge defined as dX t = − Xt T−t dt + dW t, 0 ≤ t < T , where W is a standard Brownian motion. We investigate the optimal rate of convergence to normality of the maximum likelihood estimator (MLE) for the parameter based on the continuous observation {X s, 0 ≤ s ≤ t} as t ↑ T . We prove that an optimal rate of Kolmogorov distance for central limit theorem on the MLE is given by 1 √ |log(T−t)| , as t ↑ T . First we compute an upper bound and then find a lower bound with the same speed using Corollary 1 and Corollary 2 of Kim et al. (J Multivar Anal 155:284–304, 2017b) respectively.

      • Pathological Analysis of Dysplastic and Malignant Nodules in 21 Explant Livers

        Jung,ES,An,BM,Park,DH,Kim,BS,Choi,JY,Lee,CD,Park,YM,Han,NI,Byun,BH,Kim,BK,Bae,SH,Yoon,SK,Baek,JH,Byun,JY,Kim,DG,Kim,IC,Cha,SB 가톨릭중앙의료원 가톨릭암센터 1998 암심포지움 Vol.- No.2

        동족 간이식이 보편화됨에 따라서 전체간을 분석할 수 있게 됨으로서 간암 및 전암병변에 대한 방사선학적, 병리학적 연구가 활발하게 진행되고 있다. 간경변증은 간암의 가장 중요한 선행질환으로서 이에 대한 병리조직학적 연구는 간암발생의 단계적 발전과정과 관련된 기전을 밝히는데 중요한 단서를 제공할 것으로 시사된다.

      • KCI등재SCOPUS

        모체혈액에서 중합효소 연쇄반응을 이용한 태아 Y-Specific Sequence 산전진단에 관한 연구

        정은숙(ES Jung),김종일(JI Kim),박혜영(HY Park),문혜성(HS Moon),안정자(JJ Ahn),우복희(BH Woo) 대한산부인과학회 1995 Obstetrics & Gynecology Science Vol.38 No.11

        The polymerase chain reaction was used to amplify a Y-specific sequence of fetal cells in peripheral blood from each ten primigravidas in early and late pregnancy, ten women having the history of the delivery about one years ago, eight women having no pregnancy experience and two men. Peripheral blood samples were obtained from outpatients at the hospital Ewha Womans University between January 1993 and February 1994. 1. There were Y-specific sequences at eight women without history of pregnancy. 2. There were Y-specific sequences at seven cases of ten primigravidas in late pregnancy spondent to the sex of fetuses determined by amniocentesis 3. There were Y-specific sequences at six cases of ten primigravidas in late pregnancy and there were not at other four cases. There results were correspondent to postnatal sex of babies. 4. There were Y-specific sequences at five cases of eight women over one year after male babies delivery and no Y-specific sequences at the remaining three cases and all two women over one year after female fetus delivery. In conclusion, polymerase chain reaction used in this study for prenatal detection of Y-specific sequences of fetal cells in maternal blood could usefully assist prenatal diagnosis of six-linked genetic disordors.

      • KCI등재

        철분공급이 임신부와 태아의 혈청 Ferritin헤모글로빈 , 혈청철 및 철결합능에 미치는 영향

        정은숙(ES Jung),송기창(KC Song),정운남(WN Jung),나덕진(DJ Rah),김대훈(DH Kim),나종구(JG Na) 대한산부인과학회 1989 Obstetrics & Gynecology Science Vol.32 No.7

        1987년 10월부터 1988년 2월까지 5개월간 가톨릭의과대학 부속병원에서 정상분만한 임신부 54명과 그에게서 출생한 정상신생아 54명에서 혈청 ferritin, 혈색소, 혈청 철, 총 철결합능을 측정하여 다음과 같은 결론은 얻었다. 1. 임신부의 혈청 ferritin치는 평균 23.7+-21.7 ug/l, 혈색소치는 평균 11.4+-1.8g/dl, 혈청 철은 평균 121.0+-80.0ug/dl이고 총 철결합능은 평균 446.9+-133.9ug/dl이엇다. 이들에서 출생한 태 아의 제대혈의 혈청 ferritin치는 평균 118.0+-62.1ug/dl이고, 총 철결합능은 평균 289.9+-86.3ug/dl이었다. 임신부와 제대혈의 검사치를 비교하면 혈청 ferritin, 혈색소, 혈청철은 모두 제대혈에서 5배, 1.3배, 1.6배로 높았다. 2. 임신부의 ferritin치에 따라 구분해보면, ferritin치가 12ug/l이상인 군은 31명(58%)이고 그미 만인 군은 23명(42%)으로 임신부의 혈청 ferritin치와 제대혈청 ferritin치사이에는 유의한 상관 관계가 있었다. 그러나 임신부의 혈청 ferritin치와 제대혈의 혈색소치, 혈청 철사이에는 상관 관계가 없었다. 3. 임신부의 혈색소치를 기준으로 혈색소치가 11g/dl이상인 군과 그 미만인군으로 나누어 비 교해 보면 임신부의 혈색소치와 제대혈의 혈색소치, 혈청과 혈청 ferritin사이에 유의한 상관 관계가 없었다. 4. 철분공급에 따른 차이를 보면 철분공급을 받은 경우에 임신부와 제대혈에서 모두 혈청 ferritin의 상승을 보였으나 제대혈의 혈색소치와 혈청철에는 유의한 차이가 없었다. 5. 임신부의 연령, 임신회수, 임신주수와 태아체중에 따른 철분대사 기준의 변화는 없었다. Measurements of serum ferritin and other hematologic laboratory indices about iron metabolic state were done in 54 paired maternal and cord blood, and 17 of these 54 women had taken iron supplement during pregnancy. These values were analyzed by parameter of maternal serum ferritin hemoglobin, iron supplement, and following results were obtaiend. 1. Average value of maternal serum ferritin was 23.7+-21.6 ug/l and that of hemoglobin was 11.4+-1.8 g/dl and those for serum iron and TIBC were 121.0+-80.0 ug/dl and 446.9+-133.9 ug/dl respectively 2. Values of cord serum ferritin hemoglobin serum iron were higher than maternal values especially cord serum ferritin was about 5 times higher than maternal serum ferritin 3. There was linear correlation between maternal serum ferritin and cord ferritin . But there was no correlation between maternal serum ferritin and cord ferritin hemoglobin serum iron and TIBC. 4. There was no correlation between maternal hemoglobin and cord hemoglobin serum iron and serum ferritin. 5. By iron supllement, the average values of maternal hemoglobin , maternal ferritin and cord serum ferritin were increased. 6. Iron hematologic indices were not changeable by maternal age, parity gestational week and fetal weight.

      • KCI등재SCOPUS

        습관성유산 환자에서 조직적합성항원 측정의 의의

        김의숙(ES Kim),최범채(BC Choi),황정혜(JH Hwang),오정미(JM Oh),이재훈(JH Lee),전종영(JY Jun),박소연(SY Park),최수경(SK Choi) 대한산부인과학회 1995 Obstetrics & Gynecology Science Vol.38 No.7

        Histocompatibility between husband and wife at the HLA locus has been suggested as a determination of recurrent habitual abortion. This major histocompatibility complex homozygosity was generally associated with decreased mixed lymphocyte reactivity in recurrent habitual abortion couples. We measured the incidence of HLA antigens loci and sharing within 46 couples with histories of unexplained recurrent habitual abortion and in a fertile control population of 18 couples. One way mixed lymphocyte culture(MLC) was performed on 45 recurrent abortion couples and calculated blocking effect index(BEI). There were no significant differences in the incidence of HLA alleles and shared HLA antigens between recurrent habitual abortion couples and fertile control couples. and no significant correlations between incidence of antigen sharing and BEI in recurrent habitual abrotion couples. These results challenge the concept that the major histocompatibility complex have a major role in recurrent habitual abortion. Therefore, testing of couples for HLA sharing no longer is recommended routinely in the evaluation of recurrent habitual abortion.

      • KCI등재

        임신중 매독

        장은실(ES Chang),김석애(SA Kim),유한기(HK Yoo),강신명(SM Kang) 대한산부인과학회 1975 Obstetrics & Gynecology Science Vol.18 No.11

        The incidence of syphilis had been markedly decreased after the introduction of penicillin in the treatment of syphilis in 1943. Since 1958, however there has been an unmistakable upward trend in many parts of the world. As syphilis in pregnancy is injurious to mother nad fetus it is very important to prevent or treat syphilis in pregnancy. To detect syphilis in the early stage of pregnancy, antenatal care including the serological test for syphilis in pregnant women is necessary. During a period of 3 years and 8 months from May 1969 to December 1972, 7435 women were delivered at Ewha Womans University Hospital. Among them 6742 pregnant women were examined, of whom 81 (1.20%) had positive V.D.R.L and R.P.C.F. test. Only 4 (4.94%) among the 81 syphilitic patients took antenatal care, and remaining almost all the syphilitic patients found to be syphilis just before orat delivery. Whenever and wherever antenatal serological tests for syphils are carried out routinely, the incidence of congenital syphilis and obsteric complication such as abortion prematurity and stillbirth fall and remain low. Of the 81 syphilitic patients 17 and 16 patients delivered premature babies and stillbirths respectively and 6 perinatal deaths were developed.

      • KCI등재

        Optimization by Numerical Simulation of the Active Layer's Thickness for Organic Thin Film Transistor

        Abdeljabbar Es-saghiri,Abdenabi Brahmi,Aumeur El Amrani 한국물리학회 2020 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.76 No.6

        This paper reports the performance of a pentacene-based organic thin film transistor (OTFT) that was investigated using numerical simulations for different pentacene thicknesses. The studied OTFTs showed a peak mobility in the saturation region of 5 × 10^{-2}cm^2V^{-1}s^{-1} for a pentacene thickness of 50 nm. Furthermore, an optimum Ion/Ioff current ratio of 3.5 × 10^5 was observed for a similar pentacene thickness of about 50 nm. Moreover, the threshold voltage and the sub-threshold slope were significantly affected and decreased with increasing pentacene thickness. In addition, based on our proposed approach and the simulation results, we noticed that a penatcene thickness of 50 nm remained the optimum value for the active layer channel in order to obtain optimal performance from the OTFT devices.

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