• 정보보호학회논문지
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• 제15권1호
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• pp.99-107
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• 2005

ARIA는 128비트 블록 암호 알고리즘으로 128, 192, 256 비트 암호키를 사용한다. 또한 SPN (Substitution and Permutation encryption Network) 구조와 Involution 이진 행렬을 사용하여 초경량 환경 및 하드웨어 구현에 최적으로 개발되었다. 본 논문에서는 실제 스마트카드에 부주의한 ARIA 구현이 차분 전력 분석 공격 (Differential Power Analysis)에 취약함을 널이고자 한다. ARIA에 적용된 공격시점은 S-box 출력에 대한 소비 전력이며 이는 매우 현실적이며 위협적이다. 또한 두 개의 라운드 키만을 이용하여 ARIA의 master key (MK)를 얻을 수 있다.

• 대한한방부인과학회지
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• 제36권4호
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• pp.121-139
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• 2023

Objectives: This study was performed to analyze randomized controlled trial, which studied the effect of Saenghwa-tang treatment on postpartum prolonged lochia and uterine subinvolution. Methods: Researchers searched for randomized controlled trial of based on postpartum prolonged lochia, uterine subinvolution and Saenghwa-tang. The paper search was conducted through 6 online databases on August 10, 2023. Results: 8 studies were included after selection and exclusion criteria. 5 studies compared Saenghwa-tang alone with western medicine. 3 studies compared combined treatment of Saenghwa-tang and western medicine, with western medicine alone. Comparing with control group, the treatment group showed statistically significant improvement on total effective rate, uterine involution, serum fibrinogen, D-dimer, viscosity of blood and plasma, Erythrocyte aggregation, and various symptoms. Conclusions: This study suggests that Saenghwa-tang has benefit for treating prolonged lochia and uterine subinvolution. For reliable evidence, further research is needed to establish safety of Saenghwa-tang, standardize diagnosis criteria and specify the treatment course.

• IMMUNE NETWORK
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• 제23권5호
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• pp.36.1-36.16
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• 2023

Thymic epithelial cells (TECs) play a critical role in thymic development and thymopoiesis. As individuals age, TECs undergo various changes that impact their functions, leading to a reduction in cell numbers and impaired thymic selection. These age-related alterations have been observed in both mice and humans. However, the precise mechanisms underlying age-related TEC dysfunction remain unclear. Furthermore, there is a lack of a comprehensive study that connects mouse and human biological processes in this area. To address this gap, we conducted an extensive transcriptome analysis of young and old TECs in mice, complemented by further analysis of publicly available human TEC single-cell RNA sequencing data. Our analysis revealed alterations in both known and unknown pathways that potentially contribute to age-related TEC dysfunction. Specifically, we observed downregulation of pathways related to cell proliferation, T cell development, metabolism, and cytokine signaling in old age TECs. Conversely, TGF-β, BMP, and Wnt signaling pathways were upregulated, which have been known to be associated with age-related TEC dysfunctions or newly discovered in this study. Importantly, we found that these age-related changes in mouse TECs were consistently present in human TECs as well. This cross-species validation further strengthens the significance of our findings. In conclusion, our comprehensive analysis provides valuable insight into the biological and immunological characteristics of aged TECs in both mice and humans. These findings contribute to a better understanding of thymic involution and age-induced immune dysfunction.

• 한국지반환경공학회 논문집
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• 제13권5호
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• pp.13-24
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• 2012

국토의 효율적 이용과 기간시설 수용을 위한 대단위 부지 확충 및 대규모 항만배후부지 개발이 계획 중에 있으며, 이에 따라 해안지역의 준설매립은 지속적으로 이루어지고 있다. 슬러리 상태의 초연약 상태인 준설매립 지반은 오랜 시간에 걸쳐 침강 및 자중압밀 과정을 거치게 되며 투기한 준설토를 압밀 촉진시켜 침하시킬 수 있다면 기존 처분지의 수명을 연장시킬 수 있으므로 경제적으로 유용하리라 판단된다. 재하중 없이 공기를 단축시키고 매립 물량을 증대시키기 위하여 small column test와 medium column을 보완, 개발한 medium column test를 실시하여 PBD와 침투압이 동시에 작용하였을 PBD의 효과 및 침투압의 침강 및 자중압밀 촉진 효과를 검토하였다. 연구 결과, 기존의 자중압밀 공법에 비하여 침투압과 PBD를 적용한 지반은 배수재의 배수거리 단축에 따른 투수 상승 효과와 침투압에 의한 침투 압밀의 효과가 활발히 이루어지는 것으로 나타났다. 이를 통해 매립 직후나 매립 도중에 연직드레인을 직접 타설하여 침강 및 자중압밀 과정을 단축시키면 전체 매립공사 공기를 단축시킬 수 있으며 압밀촉진에 따라 확보된 여유고 만큼 준설토 투기가 가능해져 투기 준설토량을 경제적으로 증대시킬 수 있을 것으로 기대된다.

• Journal of Acupuncture Research
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• 제20권6호
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• pp.63-79
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• 2003

Objective: It makes a through study on the popularization and usefulness paln of Moxa Combustion, therefore popularizing practical use of that. Methods: It was based on the established treatises and books, in order to studying about the literature of Moxa Combustion Results & Conclusions: It makes a through study on the whole of Moxa Combustion, the results as follows. 1. We explained(illustrated) the origin, history, classification and mechanism(effect) of Moxa Combustion 2. The study of standardization plan of Moxa Combustion for popularization - The thermal stimulation of Moxa Combustion was decided the characteristic pattern of combustion temperature by moxa burning and that makes a measure to grasp the effective action of Moxa Combustion upon human body. Thereupon it is necessary to continue further studies by analysing the characteristic pattern of combustion temperature by moxa burning and there clinical effects in practice. 3. The usefulness of Moxa Combustion - The therapeutic effect of Moxa Combustion are hematopoiesis(increase the blood), analgesic function, increase the immunity, antioxidant activity, diuretic action, control of hormone(endocrine gland), supression of carcinogenesis, increase the self involution(natural healing), decrease of GOT/GPT, Glucose, Cholesterol level.

• 한국가축번식학회지
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• 제19권2호
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• pp.119-127
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• 1995

These studies were carried out to examine the estradiol-17$\beta$ levelsin plasma and ovarian tissues, as well as the contents of collagen and catecholamines in the uterus, and to determine the effects of GnRH administrations of uterine involution in postpartum Korean native goats. Plasma concentrations of estradiol-17$\beta$ were 63.81$\pm$8.00 pg/ml at day 1 of kidding, declined to 36.78$\pm$22.90 ng/ml at day 24 and decreased progressively to 27.81$\pm$17.06 and 12.46$\pm$8.13 pg/ml at days 30 and 36 postpartum, respectively. In ovarian tissues, the concentrations of estaiol-17$\beta$ were increased just before parturition and decreased immediately after parturition. The plasma estradiol-17$\beta$ levels were slightly higher on days 12 and then decreased gradually after parturition. The concentraitons of estradiol-17$\beta$ in the ovaries of postpartum goats were increased at day 36 after treatments with GnRH. The total hydroxyproline contents in the uterus was slightly higher prior to parturition and decreased gradually with the postpartum intervals after parturition. Hydroxyproline concentraitons in the uterus were decreased at days 24 and 36 postpartum after treatments with GnRH. The norepinephrine concentrations in myometrium from the pregnant and postpartum goats were correspondingly low both immediately before and after partuition. Norepinephrine concentrations in the pregnant horn of the uterus were increased from days 12 to 36 of postpartum and those levels of the non-pregnant horn were also increased from days 24 to 36 postpartum. Slightly higher concentrations were present in the non-pregnant horn in comparison to the pregnant horn but these differences were not significant. Postpartum, the uterine norepinephrine concentration was slightly increased at day 36 after treatments with GnRH. Dopamine concentrations were greater than those of norepinephrine. The concentrations of dopamine in the uterus of pregnant goats was not significantly different from that in the postpartum animals. Dopamine concentraitons of pregnant horn in postpartum goats were increased at day 24 after treatments with GnRH.

• 한국환경생태학회지
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• 제25권1호
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• pp.31-36
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• 2011

본 연구는 사면안정해석에 필요한 기초자료를 제공하고자 잣나무, 낙엽송, 소나무, 신갈나무, 오리나무를 대상으로 교목류 뿌리의 인장력 및 인장강도를 측정 분석하였다. 그 결과 인장력은 대부분 뿌리 직경의 거듭제곱의 형태로 증가하는 것으로 나타났다. 또한 뿌리의 평균 인장강도는 잣나무 $165.38kgf/cm^2$, 낙엽송 $172.78kgf/cm^2$, 소나무 $176.25kgf/cm^2$, 오리나무 $214.29kgf/cm^2$, 신갈나무 $224.19kgf/cm^2$로 나타났으며, 뿌리의 직경이 커질수록 인장강도가 감소하는 경향을 나타냈다. 측정 분석된 인장강도를 기초자료로 토양의 전단강도 증가값을 산출한 결과 잣나무 $0.099kgf/cm^2$, 낙엽송 $0.104kgf/cm^2$, 소나무 $0.106kgf/cm^2$, 오리나무 $0.129kgf/cm^2$, 신갈나무 $0.135kgf/cm^2$인 것으로 나타났다.

• 한국정보통신학회논문지
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• 제15권4호
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• pp.860-868
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• 2011

블록 암호는 Feistel 구조와 SPN 구조로 나눌 수 있다. Feistel 구조는 암호 및 복호 알고리즘이 같은 구조이고, SPN 구조는 암호 및 복호 알고리즘이 다르다. 본 논문에서는 암호와 복호 과정이 동일한 SPN 구조 블록 암호 알고리즘인 가칭 SSB를 제안한다. SSB는 짝수 N 라운드로 구성하고, 각 라운드는 라운드 키 덧셈, 치환 계층, 바이트 교환 및 확산 계층으로 구성한다. 치환 계층은 홀수 라운드와 짝수 라운드가 서로 역의 관계를 이룬다. 확산 계층은 MDS 대합 행렬로 구성한다. SSB의 차분 및 선형 공격 확률은 $2^{-306}$로 AES와 동일하다. 본 논문에서 제안한 암호와 복호가 동일한 SPN 블럭 암호는 하드웨어 구성이 간단한 장점을 가지므로 제한적 하드웨어 및 소프트웨어 환경인 스마트카드와 전자 칩이 내장된 태그와 같은 RFID 환경에서 안전하고 효율적인 암호 시스템을 구성할 수 있다.

• 한국수산과학회지
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• 제48권5호
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• pp.696-703
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• 2015

We investigated the characteristics of embryonic and abnormal organ development in haploid olive flounder, Paralichthys olivaceus, by comparing egg development and histological sections in haploid and diploid individuals. After the mid-blastula transition, abnormal development was observed in haploid fish, including delayed epiboly and malformation of the germ ring and embryonic body. In haploid flounder, Kupffer’s vesicles are irregularly shaped and of variable size compared to diploids. The embryonic body of haploids was shorter and broader than that of diploids and the tail length and size were variable. Most haploid embryos failed to hatch and the few larvae that did, did not survive for more than 6 h. The histological analysis of haploid larvae revealed deformed development in diverse organs, including the eye, otic vesicles, notochord, and neural tube. These results may be related to an abnormality in the axial system of haploid larvae. This study confirmed that the abnormalities of haploid olive flounder were similar to the reported characteristics of haploid syndrome. The abnormalities are caused by delayed epiboly and involution and deformity of Kupffer’s vesicle during egg development.

• 구강회복응용과학지
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• 제26권1호
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• pp.33-38
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• 2010

상악의 악성 종양에 대한 치료로서 상악골 절제술이 시행되며 필연적으로 이것은 환자 구개부에 결손부를 생성한다. 이로 인해 안모의 변형, 연하, 저작, 발음 등 다양한 문제가 발생할 수 있다. 상악골 절제술 후 이런 문제들을 극복하기 위해 외과적 재건 또는 보철적 치료가 치료 방법으로 선택될 수 있으나 대부분의 상악골 절제술 환자에서 구강악안면 재건의 방법으로 구개폐쇄장치가 더 선호된다. 본 증례는 Aramany 분류 II급에 해당하는 상악골 부분 절제술을 시행한 환자에게 구개폐쇄장치의 유지와 안정을 얻고 모든 기존의 금관수복물을 유지할 수 있는 swing-lock attachment를 사용하여 수복한 임상과정 및 결과에 관하여 보고하고자 한다.