• Korean Journal of Food Science and Technology
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• v.51 no.5
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• pp.466-472
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• 2019

This study was conducted to investigate anti-photoaging effects of collagen hydrolysate containing collagen tripeptides (CTP) in both HaCaT cells and SKH-1 hairless mice. CTP treatment was nontoxic to HaCaT cells and improved expression of biomarkers associated with aging of skin, such as, collagen 1A, metalloproteinase (MMP)-1, and MMP-13 after subjecting mice to ultraviolet B (UVB) irradiation. In animal studies, the depth and width of wrinkles in the skin of mice were determined upon subjecting them to UVB irradiation. However, positive effects on wrinkles on the skin of mice were seen following CTP supplementation. Collagen content and density of mouse skin were restored following CTP supplementation for 14 weeks after UVB irradiation. These results were based on the effects of CTP on protein levels of collagen 1A, MMP-1, and MMP-13. Therefore, CTP might have positive effects on the number, depth, and width of wrinkles caused by UVB irradiation in SKH-1 hairless mice.

• Food Science and Industry
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• v.44 no.2
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• pp.2-8
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• 2011

• Proceedings of The Korean Society of Agricultural and Forest Meteorology Conference
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• 2017.11a
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• pp.29-30
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• 2017

• Proceedings of The Korean Society of Agricultural and Forest Meteorology Conference
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• 2017.11a
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• pp.63-64
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• 2017

• Journal of Marine Bioscience and Biotechnology
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• v.11 no.1
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• pp.23-28
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• 2019

For successful microalgal biodiesel production, the strain should be selected carefully. Fast growth rate and high fatty acid contents are desired traits for algal biodiesel production. In ocean cultivation of microalgae, seawater temperature slowly changes over seasons, and rotating algal strains in accordance with their optimal temperature could improve overall productivity. Additionally, use of indigenous strain is preferred to alleviate potential impacts on the environment. In this study, five strains of Tetraselmis sp. from nearshore of Youngheung Island, Incheon, Korea, were isolated during winter and characterized for their growth patterns and fatty acid compositions in the low temperatures ($5-15^{\circ}C$). The five strains showed various characteristics in optimal growth temperature, fatty acid contents, and compositions. Compared with a strain of Tetraselmis sp., isolated from Ganghwa island in a previous study, a rapid-growing strain with 237% higher biomass productivity and an oleaginous strain with twice higher fatty acid contents at $10^{\circ}C$ were isolated. The oleaginous Tetraselmis strain showed the highest fatty acid productivity among the strains, having 438% higher productivity than the previous strain. Using the new isolates in the seasons with low seawater temperature would improve microalgal fatty acid productivity in ocean cultivation.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.12
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• pp.5764-5769
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• 2012

Business relationships can be divided in vertical and horizontal relationships. Vertical relations, such as the relation to suppliers and contractors, are of great importance and often determine a firms success. In general, many scholars produced numerous models of business relationships covering with a wide array of variables. However, models with a focus on vertical relationship did not receive much attention. This paper deals with problems related to vertical relationships and a the business model paying special attention to vertical relationships is developed. Vertical relationships span over a wide range of industries, including industrial electronics and automotive firms. In Chapter 2, the theoretical approach needed to develop a process model to examine the vertical relationships is developed. Chapter 3 features core findings about business relationships. Chapter 4 deals with vertical relationships as developed between the core business process model. Finally, Chapter 5 of the study covers limitations and future research directions.

• Journal of Korea Technology Innovation Society
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• v.10 no.2
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• pp.255-283
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• 2007

As of April 2006, Korea had successfully invited twelve global IT R&D centers to help implement the u-IT839 strategy, but there have also been some worries about their research and collaboration performance in Korea. Although it is too early to judge the invitation outcome only after two years or less of their working, the Korean government is being advised to employ a more customized invitation strategy. In this paper, an analytic framework for the attraction of global R&D centers is developed based on the attractiveness-competitiveness matrix, and is applied empirically to the IT industry. Fourteen major IT technology categories and their sub-technological areas are classified into four strategic groups (priority group, wish group, consideration group, and hold group) along the framework via expert surveys and the Analytic Hierarchy Process (AHP) technique. This study is expected to help the government to implement the 'select and focus' strategy in inviting global R&D centers and creating synergy effects between them by providing basic data on global R&D partnership priorities. The implications and limitations of the research and future research directions are discussed at the final section.

• Proceedings of the Korea Information Processing Society Conference
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• 2019.10a
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• pp.153-155
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• 2019

국방무기체계 분야 중 단일 센터에 대규모 분산시스템을 구성하는 경우 신속한 데이터 처리를 위해 통신 미들웨어로 사용되는 DDS의 패킷을 튜닝하여 사용하고 있다. 하지만 향후 국방무기체계는 생존성 보장을 위해 분산시스템의 장소를 주/예비 센터로 이원화하면서 센터간에도 신속한 데이터 동기화 및 비상시 OO초 내 센터 임무전환까지 함께 요구하고 있다. 따라서 단일 센터에서 적용한 DDS 패킷 전송 방식을 WAN 환경에 적용 시 데이터 송수신간 패킷의 순서가 바뀌는 현상이 발생하여 데이터 공유가 제한될 수 있다. 본 연구에서는 이와같은 제한사항을 극복하기 위해 DDS를 적용한 LAN 구간의 기존 성능을 유지하면서 WAN 구간 데이터의 신뢰성 보장을 위한 TCP/IP 기반의 WAN Sync 설계를 제시하였다.

• KOREAN POULTRY JOURNAL
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• v.55 no.6
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• pp.146-150
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• 2023

• Proceedings of the Korean Society of Computer Information Conference
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• 2023.01a
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• pp.131-132
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• 2023

본 연구는 R&D 전주기 지원을 위해 과제 기획 및 수행과 연구성과 창출 시나리오를 통합 설계하고, 연구자 관점에서의 실효성과 유용성을 검증하기 위해 프로토타입으로 구현하는 것을 목표로 한다. 기존 연구가 R&D 전주기를 몇 가지 활동으로 세분화하고 모형화하였지만, 개념적 설계에만 초점을 맞추고 있다는 한계를 극복하고자, 본 연구에서는 산업계 및 학계 전문가와 협력하여 R&D 경험을 시나리오에 반영하고 이를 프로토타입으로 실증하였다.