• The KIPS Transactions:PartA
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• v.10A no.5
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• pp.571-578
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• 2003

The appearnace of web technology has accelerated the development of the multimedia technology, the computer communication technology and the multimedia application contents. Researches on WBI(Web-based Instruction) system have combined the technology of the digital library and LOD,. REcently WBI(Web-based Instruction) model which is based on web has been proposed in the part of the new activity model of teaching-learning. As the demand of the customized coursewares from the lwarners is increased, the needs of the efficient and automated education agents in the web-based instruction are recognized. In this paper we propose a system monitors learner's behaviors constantly, evaluates them, and calculates his accomplishment. And the system offers suitable course to learner applying this accomplishment degree to agent's schedules. Therefore, the learner achieves an active and complete learning from the repeated and suitable course semantic-based retrieval.

• Convergence Security Journal
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• v.6 no.3
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• pp.49-58
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• 2006

Currently there are many standards of network management. They are : SNMP (Simple Network Management Protocol-for Internet management), CMIP (Common Management Information Protocol-standardized by ITU-T and ISO), RMON (Remote network MONitoring-for distributed management of the LAN segment), and so on. Especially RMON has created the many concerns in order to manage subnetworks of a large network, but it has negative aspects. For instance, routers or hubs with RMON capability are expensive to a network manager because of adding heavy management cost. Moreover it imposes a heavier burden on network manager, because it must use a network management tool which will be additionally needed with RMON device. This paper proposes a model of PC based RMON Agent system. The RMON Agent system monitors the traffic on LAN segment through the use of a Virtual Device Driver (VxD), based on PC. In term of cost this model will replace the expensive RMON device, and eventually enable a network manager to manage LAN segment more efficiently, due to reduced cost.

• Journal of the Korea Convergence Society
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• v.9 no.5
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• pp.7-14
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• 2018

The purpose of this study is to analyze the effect of commuter's departure time on transportation system in future traffic system operated autonomous vehicle using agent based model. Various scenarios have been set up, such as when all passenger choose a similar departure time, or if the passenger chooses a different departure time. Also, this study tried to analyze the effect of road capacity. It was found that although many of the scenarios had been completed in a stable manner, many commuters were significantly coordinated at the desired departure time. In particular, in the case of a reduction in road capacity or in certain scenarios, it has been shown that, despite excessive schedule adjustments, many passengers are unable to commute before 9 o'clock. As a result, it is suggested that traffic management and pricing policies are different from current ones in the era of autonomous car operation.

• The Journal of Korean Medicine
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• v.34 no.2
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• pp.10-19
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• 2013

Objectives: In the present study, we evaluate the anti-inflammatory effect of Lonicerae Flos on cigarette-induced lung inflammatory responses in animal model of chronic obstructive pulmonary diseases (COPD). Methods: To inspect the effects of Lonicerae Flos, we evaluated Lonicerae Flos functions in vivo including immune cell profiles in bronchoalveolar lavage (BAL) fluid, cytokine production and tissue morphological changes. Results: Lonicerae Flos significantly inhibited immune cell infiltrations into the BAL fluid (neutrophils, macrophages, lymphocytes). TNF-${\alpha}$, and interleukin-6 (IL-6) were substantially decreased in the BAL fluid of Lonicerae Flos-treated mice compared with cigarette-exposed control mice. In addition, the hypertrophy of goblet cells in the epithelial cells was reduced in both Lonicerae Flos- and roflumilast-treated mice. Conclusions: The results of this study provide evidence that treatment with Lonicerae Flos exerts strong therapeutic effects against cigarette-induced lung inflammation in vivo. Therefore, this herbal medicine may represent a novel therapeutic agent for lung inflammation in general, as well as a specific agent for the treatment of COPD.

• Composites Research
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• v.29 no.5
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• pp.236-242
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• 2016

In this work, tensile and in-plane shear tests for thermoplastic glass fiber/polypropylene composites were performed at a thermo-forming temperature and their properties were characterized and mathematically expressed by using the non-orthogonal constitutive model. As for the thermo-forming test, half-dome experiments were carried out by varying the usage of a releasing agent and the weight of holders. As results, the optimum final shape having well-aligned symmetry and no wrinkle formation was obtained when the releasing agent was used, and it was found that the careful control of a holding force is crucial to manufacture the healthy product. Furthermore, FEM simulations based on the non-orthogonal model showed similar final shapes and tendency of wrinkle formation with experimental results, and confirmed that wrinkles increase with less holding force and higher punch force is required under high frictional condition.

• Journal of the Korean Solar Energy Society
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• v.34 no.4
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• pp.23-29
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• 2014

Recently, in power system studies, Multiple Energy Carriers (MECs) such as Energy Hub has been broadly utilized in power system planners and operators. Particularly, Energy Hub performs one of the most important role as the intermediate in implementing the MECs. However, it still needs to be put under examination in both modeling and operating concerns. For instance, a probabilistic optimization model is treated by a robust global optimization technique such as multi-agent genetic algorithm (MAGA) which can support the online economic dispatch of MECs. MAGA also reduces the inevitable uncertainty caused by the integration of selected input energy carriers. However, MAGA only considers current state of the integration of selected input energy carriers in conjunctive with the condition of smart grid environments for decision making in Energy Hub. Thus, in this paper, we propose an immune algorithm based Multiple Energy Carriers System which can adopt the learning process in order to make a self decision making in Energy Hub. In particular, the proposed immune algorithm considers the previous state, the current state, and the future state of the selected input energy carriers in order to predict the next decision making of Energy Hub based on the probabilistic optimization model. The below figure shows the proposed immune algorithm based Multiple Energy Carriers System. Finally, we will compare the online economic dispatch of MECs of two algorithms such as MAGA and immune algorithm based MECs by using Real Time Digital Simulator (RTDS).

• The Plant Pathology Journal
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• v.19 no.3
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• pp.129-132
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• 2003

Fusarium wilt of cucumber caused by Fusarium oxy-sporum f. sp. cucumerinum is a serious vascular disease worldwide. Biological control of Fusarium wilt in several crops has been accomplished by introducing non-pathogenic Fusarium sup. and other biocontrol agents in soil or in infection courts. In this study, quantitative models were used to determine the biocontrol efficacy of inundatively applied antagonist formulations and the length of their effectiveness in controlling Fusarium wilt of cucumber. Quantitative model of the form [Y=L (1${-exp}^{-kx}$)] best described the relationship between disease incidence (Y, %) and inoculum density (X) of isolates F51 and F55. Isolate F51 was selected as a more virulent isolate based on the extent of its effectiveness in causing the wilt disease. The degree of disease control (Xi/X) obtained with the density of the biocontrol agent (Z), was described by the model [Xi/X=A (1${-exp}^{-cz}$)]. The zeolite-based antagonist formulation amended with chitosan (ZAC) was better at lower rates of application and peaked at around 5 g/ kg of the potting medium, whereas the peat-based antagonist formulation (PA) peaked at around 10 g/kg of the potting medium. ZAC formulation provided significantly better suppression of Fusarium wilt as described by the curvilinear relationship of the type Y= a+bX+c$X^2$, where Y represents percent disease incidence and X represents sustaining effect of the biocontrol agent.

• Journal of KIISE:Computing Practices and Letters
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• v.7 no.1
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• pp.77-86
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• 2001

With the growth of the EC(Electronic Commerce), Buying and selling software through the internet are expanded. Among the ESD(Electronic Software Distribution) methods, Buy-first method and TrY-before-bu1 method can not solve the illegal copy problem. Recently developed EL(Electronic License) model solve the illegal copy problem by separating the software and license. But this method also can not support various ways for payment. In this paper we propose the software license management system that is a newly form like ESD model. This system proposes NL(New License) to support various payment methods and SC(Software Charge) to insure that a seller takes the software price. Agent of the proposed system offers scalability to other systems and illegal copy protection function bv managing NL and SC.

• Journal of Labour Economics
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• v.38 no.4
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• pp.83-107
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• 2015

Free Agent(FA) system allows a professional player to make a salary contract with the other clubs as well as the incumbent one after the player has played in one club for a fixed periods. Sometimes compared with the salary FA players performs very poorly, which leads to a debate about FA busts. We extend the model of Yang and Wang(2013) to the one with incomplete information about the productivity of the player to explain the possibility of FA busts. FA busts do not arise in the separating equilibrium where the private information is fully revealed. The FA busts do occur in the pooling equilibrium We show that the separating equilibrium does not exist. We also show that under some conditions, in particular with strong compensation rule, the unique pooling equilibrium exists.

• Fire Science and Engineering
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• v.21 no.1 s.65
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• pp.69-73
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• 2007

In this research, an environmental-friendly foam extinguisher was newly developed using a natural surfactant as its composition. Two criteria were applied to verify its extinguishing performance and environmental attraction. One is unit 2 model by "Standards of Model Approval and Inspection Technology for Portable Fire Extinguishers" presented in Korea Fire Equipment Inspection Corporation. The other is Terrestrial Plants, Growth Test and Fish, Acute Toxicity Test presented in Korea Institute of Toxicology(Korea Research Institute of Chemical Technology). Test results showed that the extinguishing performance was 5 unit of general fire Class A, the $LC_{50}$ by germination was 75(g/kg) and the $EC_{50}$ by growth was 62(g/kg) through Terrestrial Plants, Growth Test, and also the toxicity was 6658 ppm in Fish, Acute Toxicity Test. The numerical values were highly evaluated than other fire extinguishing agents being commercialized in domestic. The results also showed suitably in basic physical properties and anti-corrosion properties for making use of fire extinguishing agent.