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B3G 네트워크에서 SLA 기반 QoS 매핑을 위한 연구
문현주(Hyun-Joo Moon),이진관(Jin-Kwan Lee),정규철(Kyu-Chul Jung),이종찬(Jong-Chan Lee),박상준(Sang-Joon Park),신성윤(Seong-Yoon Shin) 한국컴퓨터정보학회 2011 韓國컴퓨터情報學會論文誌 Vol.16 No.3
B3G 네트워크에서 SLA 기반 QoS 관리방안은 서비스 이용자와 서비스 제공자 사이에서 이루어지는 협약으로 서비스 제공자는 협약된 사항을 근거로 사용자에게 통신 서비스를 제공하게 된다. 서비스 제공자는 협의된 서비스 레벨을 유지하기 위한 QoS 방안을 제공하며 이는 정책레벨에서 시스템 레벨까지의 세부방안을 포괄하여 다룬다. 협약된 서비스 정책에 의하여 서비스 제공자는 서비스 사용자와의 협약에 맞추어 정해진 QoS를 제공하며, 따라서 서비스 사용자는 신뢰적으로 서비스를 제공받을 수 있다. 따라서 본 논문에서는 B3G 네트워크에서 SLA 기반에서 이루어질 수 있는 서비스 협약을 통하여 사용자 서비스 제공을 위한 융합 망의 QoS 매핑에 대한 방안을 제안한다. The QoS management is an agreement of service user and service provider in B3G networks, and service provider must support proper the network service to service users by the agreement facts. The service provider must provide the QoS method to maintain the agreed service, which manages the detail method of system level from policy level. By the agreement of service policy, the service provider can give the QoS to the service customer with the service agreement. Hence, in this paper we propose a QoS mapping method of heterogeneous networks to provide the customer service through the service agreement based on the SLA of B3G networks.
어린이와 청소년의 비알콜성음료 섭취에 따른 다량무기질 섭취량 평가
김성단(Kim, Sung Dan),문현경(Moon, Hyun-Kyung),박주성(Park, Ju Sung),이용철(Lee, Yong Chul),신기영(Shin, Gi Young),조한빈(Jo, Han Bin),김복순(Kim, Bog Soon),김정헌(Kim, Jung Hun),채영주(Chae, Young Zoo) 한국영양학회 2013 Journal of Nutrition and Health Vol.46 No.1
The aims of this study were to estimate daily intake of macrominerals from beverages, liquid teas, and liquid coffees and to evaluate their potential health risks for Korean children and adolescents (1-to 19 years old). Assessment of dietary intake was conducted using the actual level of sodium, calcium, phosphorus, potassium, and magnesium in non-alcoholic beverages and (207 beverages, 19 liquid teas, and 24 liquid coffees) the food consumption amount drawn from “The Fourth Korea National Health and Nutrition Examination Survey (2007-2009)”. To estimate the dietary intake of nonalcoholic beverages, 6,082 children and adolescents (Scenario I) were compared with 1,704 non-alcoholic beverage consumption subjects among them (Scenario II). Calculation of the estimated daily intake of macrominerals was based on point estimates and probabilistic estimates. The values of probabilistic macromineral intake, which is a Monte-Carlo approach considering probabilistic density functions of variables, were presented using the probabilistic model. The level of safety for macrominerals was evaluated by comparison with population nutrient intake goal (Goal, 2.0 g/day) for sodium, tolerable upper intake level (UL) for calcium (2,500 mg/day) and phosphorus (3,000-3,500 mg/day) set by the Korean Nutrition Society (Dietary Reference Intakes for Koreans, KDRI). For total children and adolescents (Scenario I), mean daily intake of sodium, calcium, phosphorus, potassium, and magnesium estimated by probabilistic estimates using Monte Carlo simulation was, respectively, 7.93, 10.92, 6.73, 23.41, and 1.11, and 95th percentile daily intake of those was, respectively, 28.02, 44.86, 27.43, 98.14, and 3.87 mg/day. For consumers-only (Scenario II), mean daily intake of sodium, calcium, phosphorus, potassium, and magnesium estimated by probabilistic estimates using Monte Carlo simulation was, respectively, 19.10, 25.77, 15.83, 56.56, and 2.86 mg/day, and 95th percentile daily intake of those was, respectively, 62.67, 101.95, 62.09, 227.92, and 8.67 mg/day. For Scenarios I·II, sodium, calcium, and phosphorus did not have a mean an 95th percentile intake that met or exceeded the 5% of Goal and UL. (Korean J Nutr 2013; 46(1): 50 ~ 60)
지상 고정형 작물 원격탐사 센서 자료와 표준 생육정보를 융합한 작물 모니터링 기법
김현기 ( Hyunki Kim ),문현동 ( Hyun-dong Moon ),류재현 ( Jae-hyun Ryu ),권동원 ( Dong-won Kwon ),백재경 ( Jae-kyeong Baek ),서명철 ( Myung-chul Seo ),조재일 ( Jaeil Cho ) 대한원격탐사학회 2021 大韓遠隔探査學會誌 Vol.37 No.5
원격탐사 기술을 이용하면 작물의 생육·생리 상태를 비파괴적이고 연속적으로 탐지할 수 있어 그 농업적 활용 가치가 크다. 원격탐사 기반 센서를 농장에 설치하여 스마트팜 시스템에 활용하면, 작물의 이상 여부를 실시간으로 연속해서 감시하여 농업정보(Agro-information)를 생산할 수 있다. 하지만, 작물은 동적으로 변하는 생물이므로, 관측 물리량이 작물의 이상 상태를 나타내는 것인지 생육단계에 따른 생육 변화를 나타내는 것인지 판단하기는 쉽지 않다. 따라서, 작물의 표준 생육정보(Standard growth information) 와 비교한 상대적인 생육을 파악해야 한다. 이상적인 재배관리에서 획득한 작물 생육관련 누적기온인 GDD (Growing Degree Days)와 식생지수의 관계를 표준 생육정보로 두고, 표준 재배관리 시행 논과 무비료처리한 논 각각에서 분광반사측정 센서로 관측된 식생지수(NDVI, Normalized Difference Vegetation Index; CCI, Chlorophyll/Carotenoid Index)와 비교해 작물 상태를 파악했다. 영양생장기 동안에는 생육 정도에 따라 NDVI의 차이가 나타났으며, 식물 스트레스에 따라 CCI가 반응했다. 벼가 익는 동안은 NDVI와 CCI 모두 감소하지만, 표준 생육에서 노화에 따른 그 감소 폭이 더 컸다. 향후 공학적 관측 기법과 농학적 해석 방법을 융합하여 유용한 농업정보를 생산하기 위해 다양한 기후조건과 품종을 대상으로 표준 생육정보 데이터베이스 구축이 필요하겠다. Accordingly, attention is also being paid to the agricultural use of remote sensing technique that non-destructively and continuously detects the growth and physiological status of crops. However, when remote sensing techniques are used for crop monitoring, it is possible to continuously monitor the abnormality of crops in real time. For this, standard growth information of crops is required and relative growth considering the cultivation environment must be identified. With the relationship between GDD (Growing Degree Days), which is the cumulative temperature related to crop growth obtained from ideal cultivation management, and the vegetation index as standard growth information, compared with the vegetation index observed with the spectral reflectance sensor (SRSNDVI& SRSPRI) in each rice paddy treated with standard cultivation management and non-fertilized, it was quantitatively identified as a time series. In the future, it is necessary to accumulate a database targeting various climatic conditions and varieties in the standard cultivation management area to establish a more reliable standard growth information.
김성단(Sung-Dan Kim),문현경(Hyun-Kyung Moon),박주성(Ju-Sung Park),양혜란(Hye-Ran Yang),이윤정(Yun-Jeong Yi),한은정(Eun-Jung Han),이용철(Young-Chul Lee),신기영(Gi-Young Shin),김정헌(Jung-Hun Kim),채영주(Young-Zoo Chae) 한국식품영양과학회 2012 한국식품영양과학회지 Vol.41 No.8
The aims of this study were to investigate some macrominerals (Na, Ca, P, K, Mg) in 207 beverages, 19 liquid teas, and 24 liquid coffees. The samples were digested by microwave and determinations of macrominerals were carried out by an Inductively Coupled Plasma Optical Emission Spectrometer (ICP-OES). The elements, listed in order of mean value of macromineral content, were potassium 208.4±298.2 mg/L (72.2±169.8 mg/container)> calcium 89.0±161.0 mg/L (26.0±57.7 mg/container)> sodium 71.2±75.0 mg/L (20.9±27.9 mg/container)> phosphorus 55.6±91.9 mg/L (17.9±33.8 mg/container)> magnesium 6.1±18.4 mg/L (2.4±10.1 mg/container). All 250 samples contained sodium and potassium, and the detection rate of calcium, phosphorus and magnesium was 88.4%, 93.2%, and 20.4%. The mean ratio of phosphorus to calcium in beverages, liquid teas, and liquid coffees was 4.2±16.0 (ND~164.4), and sports drinks showed the highest mean ratio (48.5±75.6) significantly (p<0.05). In case of sodium, detected content exceeding labeling regulations (less then 120%) was observed in 12 samples (5.5%).
장규만(Kyu Man Jang),하기수(Ki Soo Ha),문현창(Hyun Chang Moon),이문철(Moon Chul Lee),유병희(Byung Hee Yu),이홍순(Hong Soon Lee),문성수(Seong Soo Moon) 대한내과학회 1988 대한내과학회지 Vol.35 No.6
N/A Plasma atrial natriuretic peptide (ANP) has been known to be a kind of peptide hormone and to have actions of natriuresis, diuresis and vasodilatation. It has been suggested that plasma ANP may be secreted from the cardiac atrium in response to extracellular fluid volume expansion to maintain blood volume homeostasis, and its level may be raised in volume overloaded conditions, such as congestive heart failure, chronic renal failure and the syndrome of inappropriate antidiuretic hormone secretion. We investigated the effect of fluid removal by sequential ultrafiltration and hemodialysis on circulating plasma ANP in 14 volume overloaded patients with chronic renal failure. The results were as follows: 1) The mean dry weight of patients was 58.3±0.4 kg and the predialytic weight gain was 3.4±0.9 kg. The amount of fluid removal by sequential ultrafilt-ration was 1176±31.7 ml (about 2% of predialytic body weight) and postdialytic weight loss was 3.1±0.3 kg. Systolic and diastolic blood pressures were not significantly changed during sequential ultrafiltration and hemodialysis, Plasma osmolality, BUN and K+ levels were not significantly changed after ultrafiltration but were significantly decreased after hemodialysis. 2) Plasma ANP levels were raised in all patients (mean±SE 205.3±30.7pg/ml, n=l4) compared with healthy contro1s (40.9±4.4 pg/ml, n=16), but showed considerable interpatient variability. 3) Plasma ANP levels fell with fluid removal during ultrafiltration (123.4±4.2 pg/ml, p<0.025) and again as fluid was removed during hemodialysis (88.7±3.1 pg/ml, p<0.05). 4) There was no significant correlation between predialytic weight gain and plasma ANP levels, and between postdialytic weight loss and plasma ANP levels. In conclusion, this study showed that the plasma ANP level was raised as body fluid volume increased in patients with chronic renal failure and fell with fluid removal after dialysis. These findings suggest that changes in body fluid volume play an important role in the regulation of ANP secretion.
65세 이상의 한국 성인에서 노인성 난청의 위험 인자 분석:
김동욱(Dong Wook Kim),이태영(Tae Young Lee),최다혜(Da Hye Choi),김택영(Taek Yeong Kim),문현철(Hyun Chul Moon) 대한임상노인의학회 2016 대한임상노인의학회지 Vol.17 No.2
Background: Age-induced hearing loss (AIHL) is sensorineural hearing deterioration in association with aging. Although AIHL shows high incidence worldwide, the risk factors for AIHL have not been evaluated deeply in Korea. The purpose of this study was to evaluate the risk factors for AIHL in Korean adults, specifically including the cohorts who had experiences participating wars. Methods: We analyzed data from medical checkup in Daejeon Veteran Hospital. Total enrolled patients were 509 (male: 346, female: 163). The patients’ age was 71.1±5.0 (mean±standard deviation). We analyzed the correlation between hearing impairment and possible risk factors for the incidence including sex, age, hypertension, diabetes mellitus, renal failure, hypercholesterolemia, smoking history, alcohol intake, and participation of war. We performed logistic regression to find the best model to explain the risk factors for AIHL. Results: When we evaluated the risk factors for AIHL in men and women, separately, it was found that age was strongly associated with AIHL incidence in both men and women. While there was no significant factor that increased the incidence of AIHL in men, hypertension history was a significant risk factor for AIHL in women. Notably, the experience of war did not affect the incidence of AIHL, indicating that war experience does not increase the risk of AIHL. Conclusion: Hearing impairment in Korean adults is strongly associated with aging and specifically, hypertension history is the risk factor for AIHL in Korean female adults.