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황태환(Hwang Tae Hwan),백재순(Baik Jae Soon),이준호(Lee Jun Ho),박건율(Park Kon Yul),최준원(Choi Jun Won) 한국통신학회 2021 한국통신학회 학술대회논문집 Vol.2021 No.6
본 논문은 노이즈 레이블이 섞인 데이터세트에 대해 오직 한개의 네트워크만 사용하여 강인한 학습을 하는 기법을 제안한다. 제안된 방법은 학습단계에서 알맞게 라벨링된 샘플을 알아내기 위해 두 종류의 샘플 선택 기준을 사용한다. 첫번째 기준은 이전 시간들의 모델 앙상블의 손실함수값이다. 시간적으로 분리된 모델 앙상블을 만들기 위해 주기적 학습률을 적용한다. 이전 시간적 앙상블에 대한 손실함수값은 깨끗한 샘플을 감지하는 기준을 제공한다. 두 번째 기준은, 데이터 변형을 적용하여 다시점으로 예측을 하게하여, 이 예측들의 일치가 학습과 샘플 선택을 하는데 둘다 사용되게 한다. 이러한 기준들을 같이 사용함으로 써 알맞게 라벨링된 샘플을 정확하게 감지할 수 있고, 여러 개의 네트워크를 사용한 방법보다 더 나은 성능을 도달할 수 있다. 본 연구는 CIFAR-10, CIFAR-100, MNIST 등 일반적으로 널리 사용되는 데이터세트를 이용하여 수행되었으며, 기존 방법들에 비해 높은 성능을 도출하는 것을 확인하였다.
증설(證說) : 포황(蒲黃)의 독성(毒性)과 부작용에 관한 문헌적 고찰
황태환 ( Tae Hwan Hwang ),김종대 ( Jong Dae Kim ),노성수 ( Seong Soo Roh ),서부일 ( Bu Il Seo ) 대구한의대학교 제한동의학술원 2011 東西醫學 Vol.36 No.3
Typhae Pollen is in use in eastern medicine. Eastern medical doctors use Typhae Pollen for removing heat from the blood to stop bleeding(凉血止血), activating blood flow and removing blood stasis(活血祛瘀), etc. We investigated toxicity, poisoning symptoms, side effect, poisoning treatment and prevention against poisoning of Typhae Pollen. The results were summarized as follows:1. Typhae Pollen mainly cause the decrease of appetite, inconvenience of stomach part for side effects, etc. And when the patients use the powder of Typhae Pollen for external use, the allergic reaction on the skin can be showed up. 2. If the patient has a slight poisoning reactions or side effects, the symptoms are disappeared automatically with the lapse of time. 3. In order to prevent against poisoning of Typhae Pollen, the patients should keep usage, dosage and notes.
정태환 ( Tae-hwan Jung ),황효정 ( Hyo-jeong Hwang ),윤숭섭 ( Sung-seob Yun ),이원재 ( Won-jae Lee ),김진욱 ( Jin-wook Kim ),신경옥 ( Kyung-ok Shin ),한경식 ( Kyoung-sik Han ) 한국유가공기술과학회 2016 Journal of Dairy Science and Biotechnology (JMSB) Vol.34 No.3
In many countries, goat milk is an excellent nutrient source and is less allergenic for children and the elderly. The casein composition of goat milk consists largely of β-casein and lower amounts of α<sub>s1</sub>-casein, which may interfere with digestion by forming solid curds in the human stomach. Goat milk contains small fat globules and large amounts of medium chain fatty acids for, better digestibility, as well as abundant minerals and vitamins with high absorption rates. Recently, the medical benefits of goat milk in different human disorders have been recognized, leading to an increased interest in developing functional foods with goat milk, particularly for individuals with malabsorption syndrome. However, the physiological and biochemical properties of goat milk are largely unknown. We review the importance of goat milk as a potential functional food by providing scientific evidence confirming its health benefits.
삼나무 (杉) 내한성 (耐寒性) 품종 선발에 관한 연구
홍성각,조태환,황증 ( Sung Gak Hong,Tae Hwan Cho,Jeung Hwang ) 한국산림과학회 1981 한국산림과학회지 Vol.51 No.1
This study was designed to know difference in degree of dehardening and rehardening respectively by artificial high and low temperature treatments among different clonal seedlings and seedlings from different seed sources of Cryptomeria japonica which have been grown under the cold areas in Japan and Korea. High temperature treatment was done with 15 to 20℃ under 100% relative humidity for one to nine days and low temperature treatment was carried with -7℃ for one to three days. Occasionaly, high temperature treatment was combined and followed by low temperature treatment. The ability of stem section to delay dehardening by high temperature treatment and/or to hasten rehardening by low temperature treatment was used as an indicator of adaptability under extreme temperature fluctuation in nature. Clones and seedlings from different seed sources which showed greater freezing resistance than others after artificial high and/or low temperature treatments were selected over two to three time periods: early winter, mid winter and early spring in 1977 to 1980. These were Seoul #7, and #9, Namboo #3, and #4, Sung-Kang #11, Chung-Sam #8 and Huek-Suk #9. These selected seedlings might have survival advantage to withstand early and late frost damage, especially the critical frost damage of the basal stem, since it was known to be induced by lowering freezing resistance of the basal part when exposed to the high temperature near the ground during the day. Large variation in freezing resistance and degree of dehardening and rehardening was found among clonal or seed sources and among individuals within a seed source, but was not related to the difference in climatic conditions where the parent trees was selected. These indicated the possibility of future breeding work for more cold resistant family of Cryptomeria japonica.
버찌, 아로니아, 마키베리의 성분 및 항산화 활성 비교 연구
이기원,제해종,정태환,이유림,최재환,황효정,신경옥,Lee, Ki-Won,Je, Haejong,Jung, Tae-Hwan,Lee, Yu lim,Choi, Jae-Hwan,Hwang, Hyo-Jeong,Shin, Kyung-Ok 한국식품영양학회 2018 韓國食品營養學會誌 Vol.31 No.5
This study was performed to facilitate development of new food materials by comparing general components, functional components and antioxidant activity of cherry, aronia, and maquiberry. Cherry revealed higher content of water (6.71%), crude protein (4.61%) and crude protein (5.33%) than aronia and maquiberry. Crude fat content of cherry fruits was the lowest at 1.46%. Content of iron per 100 g was 0.96 mg in cherry, significantly higher than other berries. Total phenolic content of cherry, aronia and maquiberry was 31.32~95.05 GAE mg/g. Total flavonoid content in water extract was 2.07 QE mg/g in cherry, compared with aronia and maquiberry. FRAP reduction power of cherry, aronia and maquiberry was $86.94{\sim}331.83TEAC\;{\mu}mol/g$. FRAP reduction power ($156.50TEAC\;{\mu}mol/g$) of cherry was higher than that of aronia ($121.72TEAC\;{\mu}mol/g$) at $95^{\circ}C$ deionized water extract. In the case of water extract, $117.00TEAC\;{\mu}mol/g$, and cherry was higher in ABTS radical scavenging ability than aronia ($86.55{\mu}mol/g$). DPPH radical scavenging activity of cherry, aronia and maquiberry was $26.34{\sim}493.53TEAC\;{\mu}mol/g$. DPPH radical scavenging activity was lowest in cherry. In conclusion, in place of foreign expensive aronia and maquiberry, the price of cherry is low and use of cherry widely distributed has increased and is used as a material of functional food.
저온 캡슐화에 의한 Weissella cibaria CMU의 생존율 증진 효과
이다언 ( Da-eon Lee ),황효정 ( Hyo-jeong Hwang ),조유나 ( Yu-na Jo ),정태환 ( Tae-hwan Jung ),한경식 ( Kyoung-sik Han ) 한국유가공기술과학회 2018 Journal of Dairy Science and Biotechnology (JMSB) Vol.36 No.3
In this study, we aimed to investigate the effects of low-temperature encapsulation on the viability of Weissella cibaria CMU under harsh conditions and in freeze-dried foods during storage. The capsules were prepared by gelation of sodium caseinate at different concentrations (5%, 6%, 7%, and 8%) with a combination of 0.5% gellan gum and 2% glucono-δ-lactone. The size distribution of the capsules was determined using a Mastersizer 3000 laser diffraction particle size analyzer. Scanning and transmission electron microscopy revealed that the capsule with 6% sodium caseinate had a smooth and rounded external surface, with reproducibility. The acid, bile, and heat tolerances of the encapsulated cells were significantly higher than those of the control under prolonged acid (5 h), bile (12 and 24 h), and heat (2 h) exposure, respectively. During storage for up to 6 months at 4℃ or 25℃, the viability of encapsulated Weissella cibaria CMU in beef and vegetable rice porridge was effectively improved.