• Korean Journal of Soil Science and Fertilizer
• /
• v.36 no.3
• /
• pp.154-162
• /
• 2003

This study was conducted to investigate the effects of tile drain on Physicochemical properties and crop productivity of soils under plastic film house for three years (1999 - 2001). Tiles (${\Phi}100mm$ PVC pipe) were established at 50-60 cm depth with 1 m, 2 m, and 3 m intervals in Gangseo silt loam soil under 2W-type plastic film house. Cropping system was a pumpkin-pumpkin in the first year, a cucumber-spinach-crown daisy-spinach-young radish in the second year, and a green red pepper-tomato-spinach in last year, with conventional fertilization and drip or furrow irrigation by groundwater pumping. Bulk density and soil hardness of plot with tile drain were lower than those of control (plot without tile drain). Soil water content was also lower in tile drain plot than in control regardless of soil depth, and decreased at narrower interval and longer distance from tile in the same plot, thus suggesting that water flow and density of tile drain plot was higher than those of control. Rhizosphere of spinach, a final crop of third year, was expanded more than 2 cm due probably to improvement of soil physical properties caused by tiles establishment. Electrical conductivity (EC) of topsoil decreased from $1.22dS\;m^{-1}$ to $0.82dS\;m^{-1}$ by tile drain system, and the extent of EC decrease was different with season: higher in spring and lower in summer and autumn. The $NO_{3^-}-N$ concentration in topsoil decreased, from $200mg\;kg^{-1}$ to $39mg\;kg^{-1}$. The effect of tile drain on crop yield varied with crops. Average crop productivity obtained in tile drain plot than that of control crop: 18.2% in 2 m interval, 14.2% in 3 m interval, but lower 0.2% in 1 m interval.

• 대한공업교육학회지
• /
• v.43 no.1
• /
• pp.134-157
• /
• 2018

This study surveyed and analyzed satisfaction and issues about an intellectual property education system, and educational needs for intellectual property NCS (intellectual property management, intellectual property information survey analysis, intellectual property assessment trade), in order to introduce and operate NCS-based education system that trains practical manpower in the field. The results of this study are as follows. First, satisfaction for intellectual property education system showed education contents (M=3.86), followed by lecture (M=3.79), teaching method and environment (M=3.66) and education assessment (M=3.50). The issues to be improved are low application in the current occupation due to no reflection of demands of industrial fields, as well as insufficient education contents system, lectures who fall short of education capability and interactions with students tend to stress theoretical knowledge more than practical ability, teaching method lacks application of educational medium, insufficient interest and motivation, assessment methods that fall short of theoretical knowledge and practical ability achievement, and that is theory-centered. Second, educational needs for intellectual property NCS showed intellectual property assessment trade (4.33), followed by intellectual property management (3.68), and intellectual property information survey analysis (2.99), which should be reviewed to reform or newly develop NCS-based education course. Conclusively, intellectual property education showed satisfaction above the average, but a job-centered education is demanded to elevate application in the industrial field, which puts emphasis more on practical ability than theory. For this, it is necessary to introduce intellectual property NCS reflecting demands of industrial field, and to reform or newly develop into NCS-based education course. In addition, intellectual property education needs to be operated by changed education paradigm, such as user-centered teaching method, not provided-centered, and performance and course-centered assessment method, not theoretical knowledge-centered.

• Journal of the Korean Society of Food Science and Nutrition
• /
• v.41 no.9
• /
• pp.1226-1234
• /
• 2012

3,4,3',5'-Tetrahydroxy-trans-stilbene (piceatannol) is a derivative of resveratrol with a variety of biological activities, including anti-inflammatory, anti-proliferative, and anti-cancer activities. We assessed the mechanisms by which piceatannol inhibits inflammatory responses using lipopolysaccharide (LPS)-treated Raw264.7 murine macrophages. Piceatannol (0~10 ${\mu}mol/L$) decreased LPS-induced release of nitric oxide, tumor necrosis factor (TNF)-${\alpha}$, interleukin (IL)-6, IL-$1{\beta}$, and inhibited LPS-induced protein expression of inducible nitric oxide synthase (iNOS). Activation of nuclear factor-kappaB (NF-${\kappa}B$), activator protein (AP)-1, and signal transducer and activator of transcription 3 (STAT3) are crucial steps during an inflammatory response. Piceatannol prevented LPS-induced degradation of inhibitor of ${\kappa}B$ ($I{\kappa}B$), translocation of p65 to the nucleus, and phosphorylation of stress-activated protein kinase/c-Jun NH2-terminal kinase (SAPK/JNK). Additionally, piceatannol inhibited LPS-induced phosphorylation of STAT3 and IL-6-induced translocation of STAT3 to the nucleus. Furthermore, piceatannol increased the protein and mRNA levels of hemeoxygenase (HO)-1, the rate-limiting enzyme of heme catabolism that plays a critical role in mediating antioxidant and anti-inflammatory effects. Piceatannol further induced antioxidant response elements (ARE)-driven luciferase activity in Raw264.7 cells transfected with an ARE-luciferase reporter construct containing the enhancer 2 and minimal promoter region of HO-1. These results suggest that piceatannol exerts anti-inflammatory effects via the down-regulation of iNOS expression and up-regulation of HO-1 expression.

• Korean Journal of Construction Engineering and Management
• /
• v.14 no.1
• /
• pp.52-62
• /
• 2013

Owners' efforts to acquire Green building certification, which started in 2002, have been rapidly increasing since 2006. The causes of the increased owners' interests are due to various incentives, legal obligation, and purpose of advertising. As project owners generally are deficient in capabilities and knowledge on how to deal with administrative works on certification, they tend to fulfill the minimum requirements for certification. However, effective administration process need capabilities of identifying individual making decision point and review information. The implementation of green building certification system is expected to provide comfort to both occupants and potential users. Furthermore it contributes to reducing energy costs throughout the phase of O&M. In addition, technology innovation in green industry can be obtained. Therefore, this study is intended to support owners in order that they can clarify certification tasks and make a rational decision-making in time. For this purpose, first of all, the major decision points were selected as the gateways of green building certification process. And then management system based on IDEF3 modeling was developed for supporting owners' decision-making performance. This management system will improve owners' overall capacity in handling all the tasks regarding the certification of Green building.

• Journal of the Korea Society for Simulation
• /
• v.30 no.2
• /
• pp.49-64
• /
• 2021

M&S techniques are widely used as scientific means to systematically develop response plans to chemical and biological (CB) hazards. However, while the theoretical area of hazard dispersion modeling has achieved remarkable practical results, the operational analysis area to simulate CB hazard response plans is still in an early stage. This paper presents a model to simulate CB hazard response plans such as detection, protection, and decontamination. First, we present a possible way to display high-fidelity hazard dispersion in a combat simulation model, taking into account weather and terrain conditions. We then develop an improved vulnerability model of the combat simulation model, in order to simulate CB damage of combat simulation entities based on other casualty prediction techniques. In addition, we implement tactical behavior task models that simulate CB hazard response plans such as detection, reconnaissance, protection, and decontamination. Finally, we explore its feasibility by analyzing contamination detection effects by distributed CB detectors and decontamination effects according to the size of the {contaminated, decontamination} unit. We expect that the proposed model will be partially utilized in disaster prevention and simulation training area as well as analysis of combat effectiveness analysis of CB protection system and its operational concepts in the military area.

• Journal of the Korea Society for Simulation
• /
• v.25 no.2
• /
• pp.13-20
• /
• 2016

In times of current warfare, importance of civil military operations(CMO) is more on the rise because the military winning does not couple the political winning immediately. For this reason, CMO Model Development Program has been commenced by ROK JCS since FY 2014. As CMO is non-kinetic operations which is focused on civilians, it depends on the commander's decision that reflects the results of the evaluation of the CMO performance level. The evaluation of CMO performance level is a very important factor of this model. So, I decided my subject a study of simulation method for evaluation of CMO Performance level. It is affected in CMO performance level by the occurrence of some event, and the achievement results of CMO for the response action on such event is evaluated by the 5 factors(administration level, security level, infrastructure level, humanitarian support level, friendship level) on the evaluation of CMO performance level. Even more it is affected in achievement of new CMO and new event by evaluation results. In this study, I provided a methodology of how apply the evaluation results and how simulate the achievement results of CMO performance with the 5 factors on the evaluation of CMO Performance level. Also this study is expected that it will be highly contributed to training and exercise in CMO branch in ROK JCS, when CMO Model Development Program is done as a new model applied such evaluation factors matching military environment in the Korean Peninsular, and applied this simulation method for evaluation of CMO Performance level.

• 한국정보통신설비학회:학술대회논문집
• /
• 2002.08a
• /
• pp.135-136
• /
• 2002

테라비트급 WDM 광전송시스템은 채널당 10Gb/s의 전송속도를 갖는 채널을 파장분할다중하여 하나의 광섬유로 전송하는 시스템이다. 시스템의 주요 영역으로는 광을 송수신하는 광트랜스폰더, 다채널의 광신호를 다중/역다중 하는 광 다중화기/역다중화기, 광신호를 증폭하기 위한 광증폭기, 그리고 광분기 삽입기 등으로. 구성된다. 우리가 구성하는 테라비트급 WDM 광전송시스템은 구조 변경없이 TM 및 ADM 방식을 수용한다. 시스템의 신뢰성을 위해 종속망 절체 및 광학적 계층에서의 보호절체 방식으로 1+1 OCh 및 1+1 OMS 절체 기능을 선택적으로 수용할 수 있어 시스템 운영에 따라 효율적이고 경제적인 망 운영을 할 수 있다. 감시채널은 시스템 유지보수에 필요한 신호(PMI, FDI, BDI 등) 및 시스템 DCC용으로 되어 있으며, WDM 망에 적합한 감시 체계를 설계하였다.

• KSBB Journal
• /
• v.10 no.2
• /
• pp.159-165
• /
• 1995

Methyl fructoside was continuously produced in suspended bed enzyme reactor using alginate-enclosed microspheres biocatalyst which was developed for enzymatic synthesis of methyl fructoside. And the continuous operating conditions were optimized with reactor simulation in order to demonstrate a feasibility of commercialization of the continuous enzymatic production process development. The yield and productivity of methyl fructoside were as high as 47.1%o and $2g/\ell$-hr, respectively. The optimum operating conditions were pH 4.8, 30%(v/v) of methanol content and $2U/m\ell$ of enzyme activity when the initial concentration of sucrose is $0.291mo1/\ell$ at the reaction temperature of $25^{\circ}C$.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2016.10a
• /
• pp.412-415
• /
• 2016

본 연구에서는 학술정보의 효율적 관리 및 서비스 체제를 수립하고 활용성을 강화하기 위해 논문 자동 수집 및 구축, 논문 투고 및 심사, 전자출판, XML 자동 구축에 이르기까지 전주기 기능 구현에 방안을 제시하고 이를 구현한 사례를 소개하고자 한다. 기존 Peer-Review 시스템은 데이터 수집 및 변환파트와 투고 및 심사, 전자출판 파트, XML 구축 파트 등으로 분리되거나 별도로 운영되어 왔다. 본 연구에서는 이러한 기능을 통합적으로 구현하기 위해 KISTI의 Peer-Review 시스템인 ACOMS와 XML 기반 학술정보서비스 시스템(KpubS) 기능 및 프로세스를 통합한 구현 방안을 제시하고 이를 시스템으로 구현하였다. 그러나 아직까지 원문 PDF를 XML로 완전 자동 변환할 수 있는 기술은 없는 상태로써 반자동 변환 기능을 탑재하였다. 본 연구 내용은 다양한 수집 채널을 통해 입수된 학술정보 및 XML 자료에 대한 입력체계를 제공하고, XML 본문으로부터 메타데이터를 자동 식별 및 추출하여 학술정보 DB를 구축 저장하며, 구축된 DB 및 XML 기반의 전자출판 기능 제공과 함께 웹서비스 단계까지의 전주기 공정에 대한 프로세스 모델 및 시스템에 관한 것이다. 이에 데이터베이스 구축을 위한 시간 및 비용을 절감할 수 있을뿐만 아니라, 시맨틱 태깅 및 수식, 표, 그림 정보 제공 등 이용자에게 다양한 형태의 서비스를 제공할 수 있게 되었다.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2015.10a
• /
• pp.983-986
• /
• 2015

물리적, 논리적 공간에서 다양한 오브젝트들이 상호작용할 수 있게 되고, 오브젝트에 탑재되는 소프트웨어가 고도화 됨에 따라 엔지니어가 관리 가능한 수준의 시스템 제어가 힘들어지고 있다. 이런 복잡한 시스템의 자율적인 관리를 위해 다양한 상황에 대응 가능한 자가적응성이 요구된다. 자가적응형 소프트웨어는 대상 시스템의 목표나 QoS를 만족할 수 있도록 런타임에 스스로를 변화 시킬 수 있는 능력을 가진 소프트웨어이다. 이러한 소프트웨어는 고도화된 시스템의 관리에 있어서 엔지니어의 부담을 경감시킬수 있다. 본 논문에서 제안하는 선행적 자가적응형 시스템은 도로망과 같은 주기적 특성을 가진 시스템에서 시스템이 직면하는 상황을 사전에 예측하여 미리 대응할 수 있는 시스템이다. 이는 기존에 반응적으로 대응했던 시스템들이 적용한 정책의 효과를 보기까지 낭비되는 시간을 고려하여 해당 지연시간동안에 시스템의 목표나 QoS가 하락하는 상황을 미연에 방지할 수 있다. 본 시스템의 적용분야로 지능형교통체계를 사용하였으며, 도로망 전체에서 정체 발생빈도와 평균 이동속도 그리고 단위길이당 운행시간을 평가항목으로 사용하고, 대상 도로망 전체적인 최적화를 목표로 한다.