• 정보학연구
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• 제6권1호
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• pp.1-10
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• 2003

본 논문에서는 컴퓨터 네트워크의 보안성을 위해서 다항식을 인수분해하는 데 어려움이 있는 공개키 다항식 지수 암호시스템 알고리즘을 제안하였다. 제안된 공개키 다항식 지수 암호 시스템에서는 암호문은 평문 다항식 W(x,y,z)을 구성하여 이것을 3승하여 그것에 2개의 공개키 다항식 f(x,y,z)와 g(x,y,z)를 각각 임의의 정수를 곱하여 더한 것을 암호문 C(x,y,z)로 하여 수신자에게 보내준다. 공개키 다항식 f(x,y,z)=g(x,y,x)=0 mod p 근을 구하는 어려움 때문에 해독이 힘들게 된다. 제안된 공개키 다항식 지수 암호 알고리즘은 소인수분해의 어려움에 기초를 둔 RSA 방법의 안전성에, 공개키 다항식을 동시에 만족하는 근을 구하는 어려움의 안전성을 더함으로써 보다 더 안전성 있는 공개키 지수 암호 알고리즘으로 된다. 제안된 공개키 다항식 지수 암호시스템의 타당성을 컴퓨터 시뮬레이션을 통하여 입증하였다.

• 한국해양학회지
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• 제27권3호
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• pp.197-209
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• 1992

황해 남서부인 군산외해역에 서식하는 저서 다모류군집의 분포특징과 그들의 섭식 조합을 조사하기 위하여 Veen grab 채집기를 사용하여 24개 장점에서 저서동물을 채집 하였다. 총출현 다모류는 30개과에 속하는 54종이었게, 조사해역의 평균서식밀도는 약 300개체/ m$^2$였다. 주요 우점종으로는 Sternaspis scutata (10%), Notomastus sp. (10%). Lumbrineris cruzensis (9.7%), Nephtys polybrqanchia (5.6%), Praxillella affinis (5.2%) 등이었다. 주요 우점종의 출현은 퇴적상에 따라 차이를 보였는데 사질 퇴적상에서는 N. Polybranchia Prionospio pinnata, Spiophanes bombyx 등이, 니질퇴 적상에서는 S. scutata L. cruzensis, Goniada maculata 등이 나머지는 혼합퇴적물상 에서 그들의 주 출현량을 보였다. 다모류의 섭식조합은 12가지 유형으로 나타났으며, 그 중에서 BMX(표층하퇴적물식정, 운동성, 균육질 주둥이)가 출현빈도(19개 장점)나 출현량(전체의 26%)에 있어서 가장 높았다. 각 섭식조합별로 퇴적상에 대한 선호도를 보였는데, 니질퇴적상에서는 표층하퇴적물식성, 운동성 및 비촉수성 다모류가 우세하 여 섭식조합 BMX와 BMJ 등이 많이 출현하였고, 반면 사질퇴적상에서는 여과식성, 고착 성 및 촉수를 가진 FDT와 SST 등의 섭식조합이 우점하였다.

• 한국식품조리과학회지
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• 제15권4호
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• pp.319-326
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• 1999

A survey on the traditional management of dietary life, seasonal diets, and frequency of using traditional fermented foods, was conducted from six hundred forty housewives living in rural areas of Yosu and Yocheon district, and the following results were obtained. 1. Majority of the subjects was in the range of 50-59 years old (43.1%), elementary schooling in education (38.1%), composition of family with parents and children (57.5%) with 3-4 family members (40.6%), and annual income of 5-8 million Won. 2. Korean style-house (36.7%), modernized kitchen (58.5%), and liquid fuel (69.7%) held the majority of the living environment. 3. Most of the households possessed refrigerator (98.9%), kitchenette range (98.4%) and electric rice pot (97.9%). 4. Access to traditional dishes was mostly prompted through elders or friends (84%). Preparing a meal was regarded to be a troublesome duty (41.5%). Husband's preference was the major factor for the meal preparation (53.7%) and about 30 min was spent for preparing dinner (53.7%). 5. Cooked rice was a main staple (99.5%) while three kinds of Kimchi (55.3%) were served as prime side dishes in the diets. Most Kimchi(94.7%) was prepared at home. To this basic menu, two or three side dishes were added at breakfast (77.2%), lunch (76.1%), and dinner (65.4%). MSG (mono-sodium glutamate) was consumed by 62.2% of the households. 6. Most rural households prepared traditional dishes on the traditional holidays in lunar calendar including New Year's Day (98.9%), First Full Moon of The Year (81.4%), and Autumn Full Moon (96.8%). 7 Traditional fermented foods prepared at home comprised Kimchi (87.2%), soybean paste (75.5%), red pepper soybean paste (73.9%), and soy sauce (70.7%).

• 대한간호학회지
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• 제49권4호
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• pp.449-460
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• 2019

Purpose: This study aims to provide base data for designing education and counseling programs for child-raising by identifying the types, characteristics and predictors of parenting behaviors of married immigrant women. Methods: We used a self-report questionnaire to survey 126 immigrant mothers of young children, who agreed to participate, and who could speak Korean, Vietnamese, Chinese, Filipino, or English, at two children's hospitals and two multicultural support centers. Statistical analysis was conducted using descriptive analysis, K-means clustering, ${\chi}^2$ test, Fisher's exact test, one-way ANOVA, $Sch{\acute{e}}ffe^{\prime}s$ test, and multinominal logistic regression. Results: We identified three clusters of parenting behaviors: 'affectionate acceptance group' (38.9%), 'active engaging group' (26.2%), and 'passive parenting group' (34.9%). Passive parenting and affectionate acceptance groups were distinguished by the conversation time between couples (p=.028, OR=5.52), ideology of motherhood (p=.032, OR=4.33), and parenting stress between parent and child (p=.049, OR=0.22). Passive parenting was distinguished from active engaging group by support from spouses for participating in multicultural support centers or relevant programs (p=.011, OR=2.37), and ideology of motherhood (p=.001, OR=16.65). Ideology of motherhood was also the distinguishing factor between affectionate acceptance and active engaging groups (p=.041, OR=3.85). Conclusion: Since immigrant women's parenting type depends on their ideology of motherhood, parenting stress, and spousal relationships in terms of communication and support to help their child-raising and socio-cultural adaptation, it is necessary to provide them with systematic education and support, as well as interventions across personal, family, and community levels.

• 한국정보통신학회논문지
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• 제24권6호
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• pp.736-743
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• 2020

모듈러 곱셈은 타원곡선 암호 (elliptic curve cryptography; ECC), RSA 등의 공개키 암호에서 중요하게 사용되는 산술연산 중 하나이며, 모듈러 곱셈기의 성능은 공개키 암호 하드웨어의 성능에 큰 영향을 미치는 핵심 요소가 된다. 본 논문에서는 워드기반 몽고메리 모듈러 곱셈 알고리듬의 효율적인 하드웨어 구현에 대해 기술한다. 본 논문의 모듈러 곱셈기는 SEC2 ECC 표준에 정의된 소수체 GF(p)와 이진체 GF(2k) 상의 11가지 필드 크기를 지원하여 타원곡선 암호 프로세서의 경량 하드웨어 구현에 적합하도록 설계되었다. 제안된 곱셈기 구조는 부분곱 생성 및 가산 연산과 모듈러 축약 연산이 파이프라인 방식으로 처리하며, 곱셈 연산에 소요되는 클록 사이클 수를 약 50% 줄였다. 설계된 모듈러 곱셈기를 FPGA 디바이스에 구현하여 하드웨어 동작을 검증하였으며, 65-nm CMOS 표준셀로 합성한 결과 33,635개의 등가 게이트로 구현되었고, 최대 동작 클록 주파수는 147 MHz로 추정되었다.

• 지능정보연구
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• 제28권4호
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• pp.179-190
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• 2022

데이터 불균형은 한 분류의 데이터 수가 다른 분류에 비해 지나치게 크거나 작은 현상을 의미하며. 이로 인해 분류 알고리즘을 활용하는 기계학습에서 성능을 저하시키는 주요 요인으로 제기되고 있다. 데이터 불균형 문제 해결을 위해서 소수 분포 데이터를 증폭하는 다양한 오버 샘플링(Over Sampling) 방법들이 제안되고 있다. 이 가운데 SMOTE는 가장 대표적인 방법으로 소수 분포 데이터의 증폭 효과를 극대화하기 위해 데이터에 포함된 잡음을 제거(SMOTE-IPF)하거나, 경계선만을 강화(Borderline SMOTE) 시키는 다양한 방법들이 출현하였다. 이 논문은 소수분류 데이터를 증폭하는 전통적인 SMOTE 방법에서 이상데이터(Anomaly Data)에 대한 처리방법개선을 통해 궁극적으로 분류성능을 높이는 방법을 제안한다. 제안 방법은 실험을 통해 기존 방법에 비해 상대적으로 높은 분류성능을 일관성 있게 제시하였다.

• 한국식생활문화학회지
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• 제21권2호
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• pp.171-178
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• 2006

Tarakjuk with different amylose content was made up using roasted rice flours that consisted of the highest enzyme-resistant starch (RS), while differential scanning calorimetry (DSC) was also utilized to measure the gelatinization temperature of these roasted rice flours in order to establish cooking temperature of tarakjuk. The following qualities of tarakjuk with different amylose content were studied: color, viscosity, spreadability, starch fractions involving total starch (TS), rapidly digestible starch (RDS), slowly digestible starch (SDS) and RS, in vitro starch digestibility (IVSD) and sensory properties. During experimentation, it was found that as the amylose content of the rice flour decreased, the L value of tarakjuk decreased, whereas a value increased significantly (p<0.05). Also, while viscosity showed to increase significantly (p<0.05), on the opposite end, the property of spreadability decreased. TS ranged from $15.95{\sim}17.31%$, RDS $9.36{\sim}10.16%$, SDS $5.46{\sim}6.91%$ and RS $0.33{\sim}1.07%$, on a dry basis. Although the amylose content of rice flours decreased, IVSD increased, however showing no significant difference. When testing the sensory properties of tarakjuk, color and viscosity increased, whereas clumpiness decreased. Ilpum tarakjuk showed the highest score for nutty taste and overall acceptance levels. In fact a high correlation was shown between nutty taste and overall acceptance level (p<0.01), which leads one to believe that nutty taste is a prime factor that greatly influences overall acceptance. Furthermore, viscosity was positively correlated with both a and b values, however negatively correlated with L value (p<0.05). Moreover, roasted nutty taste and overall acceptance were positively correlated with a value (p<0.05), respectively. In conclusion, the above results suggest that tarakjuk could be made by choosing the appropriate rice flour based on the nutritional or sensory purpose.

• Biomolecules & Therapeutics
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• 제32권3호
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• pp.390-398
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• 2024

FoxO1, a member of the Forkhead transcription factor family subgroup O (FoxO), is expressed in a range of cell types and is crucial for various pathophysiological processes, such as apoptosis and inflammation. While FoxO1's roles in multiple diseases have been recognized, the target has remained largely unexplored due to the absence of cost-effective and efficient inhibitors. Therefore, there is a need for natural FoxO1 inhibitors with minimal adverse effects. In this study, docking, MMGBSA, and ADMET analyses were performed to identify natural compounds that exhibit strong binding affinity to FoxO1. The top candidates were then subjected to molecular dynamics (MD) simulations. A natural product library was screened for interaction with FoxO1 (PDB ID-3CO6) using the Glide module of the Schrödinger suite. In silico ADMET profiling was conducted using SwissADME and pkCSM web servers. Binding free energies of the selected compounds were assessed with the Prime-MMGBSA module, while the dynamics of the top hits were analyzed using the Desmond module of the Schrödinger suite. Several natural products demonstrated high docking scores with FoxO1, indicating their potential as FoxO1 inhibitors. Specifically, the docking scores of neochlorogenic acid and fraxin were both below -6.0. These compounds also exhibit favorable drug-like properties, and a 25 ns MD study revealed a stable interaction between fraxin and FoxO1. Our findings highlight the potential of various natural products, particularly fraxin, as effective FoxO1 inhibitors with strong binding affinity, dynamic stability, and suitable ADMET profiles.

• Journal of Chest Surgery
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• 제13권3호
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• pp.174-185
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• 1980

It was my great nohour that I can be exposed to such plenty materials of the coronary bypass surgery. Here, I am summarizing the xoronary bypass surgery, clinically. The material is serial 101 patients who underwent coronary bypass surgery between July 17, 1979 to November 30, 1979 in Shadyside Hospital, University of Pittsburgh. 1. Incidence of the Atherosclerosis is frequent in white, male, fiftieth who are living in industrialized country. It has been told the etiologic factor of the atherosclerosis is hereditary, hyperlipidemia, hypertension, smoking, drinking, diabetes, obesity, stress, etc. 2. The main and most frequent complication of the coronary atherosclerosis is angina pectoris. Angina pectoris is the chief cause of coronary bypass surgery and the other causes of coronary bypass surgery are obstruction of the left main coronary artery, unstable angina, papillary muscle disruption or malfunction and ventricular aneurysm complicated by coronary artery disease. 3. The preoperative clinical laboratory examination shows abnormal elevation of plasma lipid in 82 patint, plasma glucose in 40 patient, total CPK-MB in 24 patient stotal LDH in 22 patient out of 101 patient. 4. Abnormal ECG findings in preoperative examine were 29.1% myocardial infarction, 25.8% ischemia and injury, 14.6T conduction defect. 5. Also we had done Echocardiography, Tread Mill Test, Myocardial Scanning, Vectorcardiography and Lung function test to get adjunctive benefit in prediction of prognosis and accurate diagnosis. 6. The frequency of coronary atherosclerosis in main coronary arteries were LAD, RCA and Circumflex in that order. 7. The patients' main complaints which were became as etiologic factor undergoing coronary bypass surgery were angina, dyspnea, diaphoresis, dizziness, nausea and etc. 8. For the coronary bypass surgery, we used cardiopulmonary bypass machine, non-blood, diluting prime, cold cardioplegic solution and moderate cooling for the myocardial protection. 9. We got the grafted veins from Saphenous and Cephalic vein. Reversed and anastomosed between aorta and distal coronary A. using 5-0 and 7-0 prolene continuous suture. Occasionally we used internal mammary A. as an arterial blood source and anastomosed to the distal coronary A. and to side fashion. 10. The average cardiopulmonary bypass time for every graft was 43.9 min. and aortic clamp time was 23 minute. We could Rt. coronary A. bypass surgery only by stand by the cardiopulmonary machine and in the state of pumping heart. 11. Rates by the noumbers of graft were as follow : 21.8% single, 33.7% double, 26.7% triple, 13.9% quadruple, 3% quintuple and 1% was sixtuple graft. 12. combined procedures with coronary bypass surgery were 6% aneurysmectomy, 3% AVR, 1% MVR, 13% pacer implantation and 1% intraaortic ballon setting. 13. We could see the complete abolition of anginal pain after operation in 68% of patient, improvement 25.8%, no change in 3.1%, and there was unknown in 3%. 14. There were 4% immediate postoperative deaths, 13.5% some kinds of heart complication, 51.3% lung complications 33.3% pleural complications as prognosis.

• 한국컴퓨터정보학회논문지
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• 제17권5호
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• pp.59-70
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• 2012

RSA-CRT는 RSA의 속도를 개선하기 위한 가장 대표적인 기법이다. RSA-CRT는 RSA에 사용되는 두 비밀소수의 법에서 각각 연산을 수행하기 때문에 RSA에 비해 약 4배가량 빠른 속도로 연산할 수 있다. 하지만 RSA에서 법 생성 후 바로 파기할 수 있었던 비밀 소수를 연산에 직접 사용함으로서 오류 주입공격 시 이를 노출하게 되는 문제가 있다. 이를 해결하기 위한 가장 대표적인 기법이 오류 확산에 기반을 둔 기법이다. 이 기법은 주입된 오류가 암호문 전체에 영향을 미치기 때문에 공격자가 비밀 소수를 얻기 힘들지만 독립적으로 진행되었던 연산을 순차적으로 해야 하며, 여전히 오류주입 공격에 취약하다는 문제점이 있다. 본 논문에서는 오류주입 공격에 강건하며 병렬처리가 가능하도록 공통법을 이용한 RSA-CRT 기법과 메시지를 각각의 법에서 연산한 RSA-CRT기법을 제안한다. 제안하는 기법은 최대 병렬연산을 통해 2회의 지수연산 시간밖에 소요되지 않기 때문에 빠른 연산속도를 제공하면서 오류주입 공격으로부터 비밀 소수의 노출을 보호할 수 있다.