• Proceedings of the Korea Information Processing Society Conference
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• 2003.11c
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• pp.1597-1600
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• 2003

컴퓨터시스템은 여러 가지 복잡하고 민감한 시스템을 제어하는데 광범위하게 쓰이고 있다. 최근에 와서는 운영시스템, 제어프로그램, 적용프로그램과 같은 여러 가지 소프트웨어 시스템이 더욱더 복잡화 및 대형화되고 있기 때문에 신뢰성이 높은 소프트웨어 시스템을 개발하는 일이 매우 중요하며, 소프트웨어 제품개발에 있어서 소프트웨어의 신뢰도가 핵심사항이다. 1970년대 이후 소프트웨어의 신뢰성을 향상시키기 위한 여러 가지 소프트웨어의 신뢰도 모델이 제시되고 검토되었으며, 특히, 소프트웨어 개발 후 테스트단계에 적용하는 신뢰도를 추정하고 예측하는 모델이 많이 개발되었다. 소프트웨어가 주어진 시간간격동안 고장이 발생하지 않을 확률 즉, 신뢰도는 소프트웨어의 테스트과정을 계속해서 반복 및 수정하면 더욱 더 증가된다. 그러한 결함검출현상을 설명해주는 소프트웨어 신뢰도 모델을 소프트웨어 신뢰도 성장 모델(SRGM)이라 한다.

• Proceedings of the KIEE Conference
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• 2006.07c
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• pp.1597-1598
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• 2006

광간섭계는 물체의 기하학적 구조 및 의료영상계측등 다양한 분야의 광계측에서 매우 일반적으로 사용된다. 이러한 광간섭계에서 광지연단은 측정대상의 기준을 위해 사용되고, 광간섭계의 계측속도는 광지연단에 의해 제한된다. 본 논문에서는 고속 광 지연단을 위해 기존의 기계적 방식을 배제하고, 광학적 방식의 광 간섭계를 구성하였다. 고속 광간섭계의 구성은 1304nm의 10GHz광원을 이용하였으며, 광지연단으로 광위상변조기와 광섬유를 이용하여 안정적이고 고속의 광 간섭계를 구성하였다. 구성된 광간섭계는 광위상변조기의 변조전압, 변조주파수에 의해 광지연시간을 가변할 수 있으며, 10MHz 반복율에 대해 11ps의 광지연시간을 얻을 수 있었다.

• Journal of Microbiology and Biotechnology
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• v.22 no.12
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• pp.1597-1604
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• 2012

Genus Bacillus is a spore-forming bacterium that has unique properties in cell differentiation, allowing the forming of spores in stress conditions and activated in the vegetative cell, with suitable environments occurring during the life cycle acting as a trigger. Their habitat is mainly in soil; thus, many species of Bacillus are associated with plants as well as rhizosphere bacteria and endophytic bacteria. Signal transduction is the principal mechanism of interactions, both within the cell community and with the external environment, which provides the subsequent functions or properties for the cell. The antimicrobial compounds of Bacillus sp. are potentially useful products, which have been used in agriculture for the inhibition of phytopathogens, for the stimulation of plant growth, and in the food industry as probiotics. There are two systems for the synthesis of these substances: nonribosomal synthesis of cyclic lipopeptides (NRPS) and polyketides (PKS). For each group, the structures, properties, and genes of the main products are described. The different compounds described and the way in which they co-exist exhibit the relationship of Bacillus substances to plants, humans, and animals.

• Proceedings of the KIEE Conference
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• 2007.07a
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• pp.1597-1598
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• 2007

전력산업에 IT 기술의 적용으로 인해 I&C 시스템의 첨단화 및 다양화되고 있으며, I&C 시스템은 전력설비의 중추적 역할을 담당하여 높은 신뢰성을 요구되고 있다. 전력설비에서의 I&C 시스템의 중요성 증대되고 I&C 시스템의 국산화 개발 증가 및 필요성이 증대하여 제어시스템 연구 및 시험설비의 인프라 구축이 매우 필요하여 그 구성 방안에 대하여 검토하였다.

• Proceedings of the Korea Information Processing Society Conference
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• 2004.05a
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• pp.1597-1600
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• 2004

본 논문에서는 RMCP(Relayed Multicast Control Protocol)[1]를 이용하여 효율적으로 미디어 스트림을 전송할 수 있도록 구현하기 위한 구조를 소개한다. 일반적으로 IP 멀티캐스팅 서비스를 구현하기 위하여 멀티캐스팅 라우터를 이용하여 여러 수신자들에게 서비스를 제공하여 준다. 그러나 멀티캐스팅 라우터를 이용하여 멀티캐스팅 서비스를 구현할 때, 사업적, 기술적 측면에서 많은 문제점을 가지게 된다. 이러한 문제점을 보완하고자 응용 계층에서 중계 기능을 제공하며, 기존에 있는 네트웍 망을 그대로 이용하면서, 멀티 캐스트 서비스를 제공한다. 본 논문에서는 이러한 멀티캐스트 전송 방법을 이용한 멀티캐스트 응용 프로그램을 개발하기 위하여 고려해야 할 사항들을 설명한다. 차후 이 구조 기반으로 실제적으로 미디어 스트림을 전송하는 프로그램을 구현하고자 한다.

• 중국학논총
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• no.68
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• pp.235-251
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• 2020

This study collected and intensively analyzed the works and remains in Namwon(南原) province by Liu Ting(劉綎) of Ming Dynasty during the Imjin War (the Japanese invasion in 1592-1598; 壬辰倭亂). Liu Ting engraved characters on the rocks as passing by the Yeowon hill(女院峙) twice. A local official of Namwon built a memorial stone at the guest residence of Namwon district to appreciate the contribution of Liu Ting to care for the local people. During the second Japanese invasion in 1597-1598(丁酉再亂), Liu Ting often climbed up the Yongdu pavilion(龍頭亭) located at Mt. Yongtu(龍鬪山) and fell in love with the splendid scenery while enjoying fishing at Jogi(釣磯). Immediately after the war, Liu Ting renovated the Guanwang Shrine(關王廟) in Namwon and built the memorial stone claiming that he defeated the Japanese army with the divine power from Guanyu(關羽).

• Asia Marketing Journal
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• v.24 no.4
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• pp.169-177
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• 2023

In the current study, we explore how women decide whether to accept or reject a potential match offered by a dating app (Tinder). Specifically, we were trying to identify overlying factors that influence the decision and understand how women make a judgment based on limited cues provided by a Tinder profile. Women largely base their decision on the perceived attractiveness and character of the potential match. The findings suggest that attractiveness is highly subjective, with no universal rules that can be quantified; thus, it is hard to predict acceptance of the potential match. There are however factors that contribute significantly to profile rejection, such as a big age difference and the inability to clearly see the face of the person.

• Proceedings of the Korea Information Processing Society Conference
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• 2011.04a
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• pp.1595-1597
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• 2011

과거에는 고속도로 상에 일정간격으로 설치하여 운영 중인 VDS(Vehicle Detection System)에서 주기적으로 검지되는 지점자료나 실제로 도로를 주행하면서 교통상황을 측정하는 프로브 차량(Probe Vehicle)들을 이용하여 통행시간을 추정해 왔으나 단순한 현시점에서의 통행시간을 나타내는 점이나 설치구간이 조밀하지 못한 곳에서의 정확성 등 많은 문제점이 있어왔다. 이에 본 연구에서는 고속도로 통행료 수납자료(Toll Collection System)를 출발시각 기준으로 정렬하고, 이를 Fuzzy c-means 클러스터링 기법을 사용하여 고속도로 통행료 수납자료의 특성에 따라 분류한 후 하나의 대푯값으로 추출하여 Kalman Filter 기법에 적용하는 고속도로 통행시간 예측 모형을 설계한다.

• Asian-Australasian Journal of Animal Sciences
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• v.19 no.11
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• pp.1597-1602
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• 2006

The effects of different mineral supplementations on the milk yield of free-ranging Somali camels were investigated in two phases in a semi-arid region of northern Kenya during the dry and wet seasons in 2002 and 2003. In phase 1, twelve (12) lactating camels were selected at random to form four (4) groups each consisting of three camels. The first group served as the control and as a result received no mineral supplementation. In addition to the control diet the other groups received oral doses of minerals as follows over a 60-day period: T1 (P), T2 (High Cu low Co) and T3 (Low Cu high Co). The daily milk yield and blood mineral profiles were measured during the wet and dry seasons. The mean daily milk yield increased from 3.4 L/d to $4.3{\pm}0.3L/d$ and 5.2 L/d in the dry and wet seasons, respectively. Fifteen (15) lactating camels were selected at random to form five groups each consisting of three replicates. The control group did not receive any mineral supplement. The other four groups in addition to the control diet, received the following treatments: T4 (Common Salt), T5 (High Co), T6 (High Co+P) and T7 (Low Co+P). Mineral supplement T6 produced significantly higher milk yield ($5.4{\pm}0.5$ and $6.5{\pm}0.7L/d$) during the dry and wet seasons. Both T6 and T7 had significantly higher milk yield than T4 and T5. During both phases, the blood Ca and P level significantly increased in camels receiving T1, 6 and 7. Animals that received only the trace mineral supplements had lower blood P compared to the ones receiving supplementary P and also the control. Supplementation of lactating camels with Co and P significantly (p<0.05) increased milk yield). Effect of common salt, commonly given by farmers, on milk yield was insignificant. It was concluded that mineral supplementation to lactating camels was beneficial, and that mineral supplements should include P and Co. Further research is required to establish P and Co requirements of lactating camels.

• Journal of the Korean Professional Engineers Association
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• v.12 no.1
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• pp.12-20
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• 1979

The early history of gun powder (black powder) and explosives was closely connected with the discovery of methods of preparing and purifing salpetre (potassium nitrate KNO$_3$). The Chineses apparently became acquainted with salpetre firstly on about 11th century, and they were possibly the original discoverers of salpetre for raw material of gun powder. The Egyptians called it “Chinese snow”, and it is significant that Chingis-Khan, the Mongol conqueror, took the Chinese eenginees with him in 1218 to use it for attacking the fortifications of the Persian cities. The black powder was invented by chance by Chinese alchemists during the Song dynasty (11th century) in the process of manufacturing medicine, and the powder was introduced to Europe by Mongol army. The manufacturing method of salpetre and gun powder was introduced to Korea from China in 1374, and the powder alld gunnery manufacturing project was developed by Mu Sun Choe(崔茂宣), the first Korean engineer late in Koryo dynasty. Coming in to Yi dynasty the explosive technic, extractive method of salpetre, and gunnery manufacturing process were developed greatly by Mu Sun Choe and Hai Sin Choe (崔海臣). However, confronting with the Japanes invasion at Imjin War (1597) with more powerful western style rifles which had been introduced from the Portuguese, on the contrary Korean army with the traditional guns couldn't compete with them. The Chochong(烏銃, the western rifle introduced in Japane) were much superior to the Chinese style traditional guns in the shooting power and striking efficiency. On the other hand, the Japanese battle ships armed only with the Chochong, when confronted with the Korean turtle shaped ships under the commanding of Admiral Yi Sun-Sin(李舞臣), were defeated by the Korean canons on the ships. The technical development of the modern powder industry in Korea. with the construction of four big explosive plants from 1930 to 1945, has resulted the mass-production of explosives. This study was purposed to investigate to the process with regard to the details of introduction to the explosive technology in Korea, and intended to give a help to the engineers who are engaged in study of the explosive technics by means of giving a spot light data on the early process of the designs, and making suggestion to the researchers for further study and invent a new and modern explosive.