• 한국동물위생학회지
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• 제47권1호
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• pp.41-48
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• 2024

Feline bocavirus (FBoV) is considered an emerging pathogen recently identified in domestic cats worldwide. To date, three species of FBoVs (FBoV-1, FBoV-2, and FBoV-3) have been reported, but there are no reports identifying FBoVs in Korea. In this study, we detected novel FBoVs for the first time in Korea in captive wild felids (four European lynx and a lion) kept at Seoul Zoo. In FBoV-positive fecal samples, not only singular infections but also dual or triple infections with three different species of FBoVs were confirmed, suggesting that three species of FBoVs are already introduced and co-circulated in susceptible host animals in Korea. These results will help expand our understanding of the geographical distribution and host susceptibility of novel FBoVs. Further studies are necessary to determine the infection status of FBoVs in domestic cats and the genetic characteristics of the viruses circulating in Korea.

• 한국항공운항학회지
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• 제25권3호
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• pp.143-152
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• 2017

The primary purpose of this thesis is to define and discuss the integration of fixed-base operators(FBO) and general aviation terminals(GAT) in Korean aviation practices in order to develop effective management and operational processes needed for Korea's expanding role in the northeast Asian region. The foundation of this research rests on four interconnected strategic points: the Korean government establishing regulations that define general and business aviation, increasing awareness of FBO and GAT, developing standards for effective operations, and optimizing the budget to build necessary infrastructure. There must be an initiative in establishing a guideline of future demand in order for these aforementioned points to take hold and for aviation activities to flourish. Korea will play a more integral role in an emerging market of general and business aviation by adhering to these strategic efforts.

• Asian-Australasian Journal of Animal Sciences
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• 제26권3호
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• pp.334-342
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• 2013

Proteases and protease inhibitors play key roles in most physiological processes, including cell migration, cell signaling, and cell surface and tissue remodeling. Among these, the matrix metalloproteinase (MMPs) pathway is one of the most efficient biosynthetic pathways for controlling the activation of enzymes responsible for protein degradation. This also indicates the association of MMPs with the maturation of spermatozoa. In an attempt to investigate the effect of MMP activation and inhibitors in cultures with various hormones during sperm capacitation, we examined and monitored the localization and expression of MMPs (MMP-2 and MMP-9), tissue inhibitors of metalloproteinases (TIMP-2 and TIMP-3), as well as their expression profiles. Matured spermatozoa were collected from cultures with follicle-stimulating hormone (FSH), luteinizing hormone (LH), and Lutalyse at 1 h, 6 h, 18 h, and 24 h. ELISA detected the expression of MMP-2, MMP-9, TIMP-2, and TIMP-3 in all culture media, regardless of medium type (FSH-supplemented fertilization Brackett-Oliphant medium (FFBO), LH-supplemented FBO (LFBO), or Lutalyse-supplemented FBO (LuFBO)). TIMP-2 and TIMP-3 expression patterns decreased in LFBO and LuFBO. MMP-2 and MMP-9 activity in FBO and FFBO progressively increased from 1 h to 24 h but was not detected in LFBO and LuFBO. The localization and expression of TIMP-2 and TIMP-3 in sperm heads was also measured by immunofluorescence analysis. However, MMPs were not detected in the sperm heads. MMP and TIMP expression patterns differed according to the effect of various hormones. These findings suggest that MMPs have a role in sperm viability during capacitation. In conjunction with hormones, MMPs play a role in maintaining capacitation and fertilization by controlling extracellular matrix inhibitors of sperm.

• 인터넷정보학회논문지
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• 제7권4호
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• pp.57-66
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• 2006

본 연구에서는 연속음성에서 무성자음을 포함한 천이구간을 탐색, 추출하고 주파수대역에서 근사합성하는 새로운 멀티펄스 음성부호화 방식 (FBD-MPC)를 제안하였다. 실험결과, 여자 음성의 경우 TSIUVC 추출율은 84.8%(파열음), 94.9%(마찰음), 92.3%(파찰음), 남자 음성의 경우는 88%(파열음), 94.9%(마찰음), 92.3%(파찰음)의 결과를 얻었다. 아울러, 0.547kHz 이하 2.813kHz 이상의 주파수 정보를 사용하여 TSIUVC 음성파형을 양호하게 근사합성할 수 있었으며, 유성음/무성음 선택정보를 이용한 MPC와 유성음/무음/TSIUVC를 이용한 FBO-MPC를 평가한 결과, FBO-MPC의 음질이 MPC의 음질에 비하여 개선되었음을 알 수 있었다.

• 대순사상논총
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• 제45집
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• pp.103-151
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• 2023

본 연구는 대순진리회의 국제개발협력 활동을 살펴보고 향후 방향을 논의하는 것을 목적으로 한다. 또한, 대순사상적 관점에서 국제개발협력과 관련한 활동을 어떻게 이해할 수 있는지를 논의한다. 국제사회에서는 정부와 공공기관, 그리고 다자기구 등 전통적인 공여자뿐만 아니라 다양한 공여자의 적극적인 참여가 촉구되고 있다. 이에, 시민사회의 NGO 뿐만 아니라, 종교계의 FBO의 역할이 중요하게 인식되고 있다. 대순진리회는 2013년 대진국제자원봉사단이 공식적으로 발족함으로써, 종단의 3대 중요사업의 수행을 위한 해외 봉사 등을 더 확대하여, 국제개발협력 활동을 체계화해왔다. 이러한 활동과 더불어 2022년에는 한국국제협력단의 시민사회협력 프로그램에도 선정됨으로써 종단의 활동을 더욱 확대해 나가고 있다. 대순진리회는 신종교로써 여타 전통종교의 FBO에 비해 그 지원 규모와 범위가 넓지 않지만, 종단의 전문성과 역량(교육, 의료 등)을 활용해 전략적인 국제개발협력의 수행이 가능하다. 실제로, 이들 FBO와 대순진리회가 수행하는 사업의 본질과 내용에서는 유사했으며, 아직 지원 활동이 초기임을 감안할 때 괄목할만한 성과를 보였다. 무엇보다 대순진리회는 선교와 같은 종교적 목표 또는 수단을 배제하고, 그 재원이 도인들의 후원과 성금으로 이루어지기 때문에 더 의미 있다고 볼 수 있다. 향후 국제개발협력의 수행에 있어, 종단의 3대 중요사업(구호자선사업·사회복지사업·교육사업)의 전략적 연계를 기반으로 국제개발협력 활동의 전문성을 도모할 필요가 있을 것이다. 또한, 상생에 기반한 평화와 공존의 국제개발협력이 될 수 있도록 그 가치와 정신을 중요하게 인식할 필요가 있을 것이다.

• Animal Bioscience
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• 제35권5호
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• pp.752-762
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• 2022

Objective: Microencapsulation is a technique to improve stability, bioavailability, and controlled release of active ingredients at a target site. This experiment aimed to investigate the effects of microencapsulated basil oil (MBO) on growth performance, apparent ileal digestibility (AID), jejunal histomorphology, bacterial population as well as antioxidant capacity of broiler chickens in a tropical climate. Methods: A total of 288 one-day-old female broilers (Ross 308) were randomly allocated into 4 groups (6 replicates of 12 birds), based on a completely randomized design. Dietary treatments were as follows: i) basal diet (NC), ii) basal diet with avilamycin at 10 ppm (PC), iii) basal diet with free basil oil (FBO) at 500 ppm, and iv) basal diet with MBO at 500 ppm, respectively. Results: Dietary supplementation of MBO improved average daily gain, and feed conversion ratio of broilers throughout the 42-d trial period (p<0.05), whereas MBO did not affect average daily feed intake compared with NC group. The broilers fed MBO diet exhibited a greater AID of crude protein and gross energy compared with those in other groups (p<0.05). Lactobacillus spp. and Escherichia coli populations were not affected by feeding dietary treatments. Both FBO and MBO had positive effects on jejunal villus height (VH), villus height to crypt depth ratio (VH:CD) and villus surface area of broilers compared to NC and PC groups (p<0.05). Superoxide dismutase level in the duodenal mucosa of MBO group was significantly increased (p<0.01), whereas malondialdehyde level was significantly decreased (p<0.01). Conclusion: Microencapsulation could be considered as a promising driver of the basil oil efficiency, consequently MBO at 500 ppm could be potentially used as a feed additive for improvement of intestinal integrity and nutrient utilization, leading to better performance of broiler chickens.

• 한국HCI학회:학술대회논문집
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• 한국HCI학회 2006년도 학술대회 1부
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• pp.812-817
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• 2006

This paper presents an image-space algorithm to real-time collision detection, which is run completely by GPU. For a single object or for multiple objects with no collision, the front and back faces appear alternately along the view direction. However, such alternation is violated when objects collide. Based on these observations, the algorithm has been devised, and the implementation utilizes the state-of-the-art functionalities of GPU such as framebuffer objects(FBO), vertex buffer object(VBO) and occlusion query. The experimental results show the feasibility of GPU-intensive collision detection and its performance gain in real-time applications such as 3D games.

• 한국정보과학회:학술대회논문집
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• 한국정보과학회 2005년도 한국컴퓨터종합학술대회 논문집 Vol.32 No.1 (B)
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• pp.427-429
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• 2005

원자력 발전소의 제어 시스템은 safety-critical 소프트웨어로서 안정성이 중요시되는 시스템이다. 최근 기존의 시스템이 PLC 기반의 디지털 제어장치로 대체되면서 이에 사용되는 소프트웨어의 안정성과 품질을 보장하기 위한 정형검증 기법이 요구되고 있다. 특히 PLC 프로그램의 설계에 사용되는 FBD의 모델체킹을 통한 정형검증에 대한 연구는 미비한 수준이다. VIS 검증기는 위의 요구에 부합하는 도구로서 이를 사용하면 여러 종류의 정형 검증이 가능하다. 본 논문에서는 VIS를 이용한 FBD의 검증을 위해서 FBD를 Verilog로 변환 하는 기법을 제안한다. 제안하는 방법의 효율성을 검증하기 위해서 현재 KNICS 사업단에서 개발중인 APR-1400용 원자로 보호 시스템의 운전정지회로를 예로 사용하였다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제11권8호
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• pp.3918-3934
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• 2017

This paper presents a viewport resolution scaling technique to reduce power consumption in mobile graphic processing units (GPUs). This technique controls the rendering resolution of applications in proportion to the resolution factor. In the mobile environment, it is essential to find an effective resolution factor to achieve low power consumption because both the resolution and power consumption of a GPU are in mutual trade-off. This paper presents a resolution factor that can minimize image quality degradation and gain power reduction. For this purpose, software and hardware viewport resolution scaling techniques are applied in the Android environment. Then, the correlation between image quality and power consumption is analyzed according to the resolution factor by conducting a benchmark analysis in the real commercial environment. Experimental results show that the power consumption decreased by 36.96% on average by the hardware viewport resolution scaling technique.