KJC Korea
Journal Central

This paper proposes a multi-agent system for personalization model on smart phone that is composed synchronization agent, intimity measure agent, stress measure agent, emotional states agent, index measure agent, communication agent, behavior agent and monitoring agent. It extracts and infers current user’s situation information from archive history data of smart phone that are call and messages, uses of application, schedule, phone directory etc. And it would provide various personalized services of current situation to smart phone user. Extension of this work are focused on developing additional personalized services, including experiments and simulations from various cases on smart phone.

This research is a study on the information diffusion on the blog. Author focused on examining the impact of network characteristics on information diffusion. For this purpose, 3,201 sample posts were used from SNAP(Stanford Network Analysis Project) data which was online blog data in USA and author examined the influence of blog's degree on information diffusion. Author find out that the higher the outside blog's degree and the outside site's degree, the more diffusion size increases. And lower average proportion of degree of outside site, the more diffusion size increase. This research will contribute to encourage online word-of-mouth for business.

Compared to IP multicast, overlay multicast is inefficient for the use of bandwidth, and the delay caused by disagreement between physical topology and overlay topology is unavoidable. Therefore, in the case of the situation in which subscription to and withdrawal from the group are dynamically realized, the effort of securing stability is required. For the sake of this, from this study, a middleware which manages communication service between client and server based on overlay multicast was presented. Proposed middleware constituted an effective transmission tree, and the weak point was improved by structuralizing server and client. As for the details of test, voice and image files were transmitted with identical condition on overlay multicast, and as for the test result, it could be confirmed that the performance of proposed middleware was improved around 20% compared to existing middleware. It could also be understood that securing stability of transmission tree, effective scheduling and connection, and so forth were also guaranteed.

Function is the basic and important part of modern mathematics. Recently there have been a number of interesting teaching methods for function concepts and graphs using computer or electronic calculator. Attention has been paid to the use of the computer in a description of the function. In fact, it is possible for students to research properties of function and plot their graphs using Excel or GSP in their classes provided with the multimedia system. In this paper, we present a teaching and learning method using GSP in the text book which follows the 7th educational curriculum. And we introduce basic properties of GSP. In the conclusion of this paper, we suggest an example of effective and active teaching methods for function using GSP.

This paper proposes the GPU (Graphics Processing Unit) based algorithm for estimating curvatures which is one of properties of the shape of 3D objects. In geometric modeling, curvatures are very useful metrics for mesh simplification, mesh segmentation, and so on. Nowadays the advanced techniques for computer graphics let many applications use huge amounts of graphic data, so that the computing time for estimating curvatures of such a huge graphic object becomes to increase. If an application which requires real-time estimation of curvatures will perform the computation in the CPU with the main memory where are all geometry information of a 3D object, it must make the system to slow down. In this paper, to decrease the computing time for estimating curvatures, some crucial computing parts for each vertex are implemented in the GPU using CUDA (Compute Unified Device Architecture). The results show that the proposed algorithm is definitely faster than previous methods.

This paper studies a fast object recognition application for a low-resource smartphone with a built-in camera. The aim is to recognize the input image captured by a smartphone camera by comparing it with the existing images from DB. HISTOGRAM is used for detecting simple outdoor cultural assets, while SIFT and SURF are used for more complex ones. To prove the feasibility of the lightweight algorithms such as HISTOGRAM, SIFT, and SURF, we implement a fast and effective object recognition system for a smartphone-based local experience of cultural assets such as the Kunjongjon or the Kyonghoeru in Kyongbokkung.

The genetic algorithms that mimic the mechanism of the natural evolution is very useful tool for exploring the solutionsof the NP-hard problems such as a variety of combinatorial optimization problems. This paper aims to apply the genetic algorithm to solve the shortest path problem, and especially, the network with few feasible paths is considered. The proposed algorithm identifies the relevant nodes at first, and represents a solution by specifying their adjacent nodes to visit next. Moreover, any additional repairing procedure is considered. This simple encoding can make the population to include infeasible paths or paths with cycles, however, such paths can be deal with by the properly designed fitness function. Consequently, it is expected that the proposed genetic algorithm will be useful to explore the effective feasible paths in the networks with cycles or dead-end nodes, especially. The result of the experiment with the missionaries and cannibals problem, a well-known river-crossing problem, reveals that a path between two nodes in a network of which entire structure is hard to be analyzed can be obtained effectively by the proposed genetic algorithm.

For the development of the anti-obesity compounds from natural sources, the tests was carried out with Korean Traditional Medicinal Plants (KTMP) by inhibitory activity of pancreatic lipase enzyme assay with porcine pancreatic lipase (type VI-S, porcine pancreas from Sigma). Among the 131 Korean traditional medicinal plants, 33 KTMP extracts exhibited a significant inhibitory activity against pancreatic lipase in in vitro study. The methanol extracts of four KTMP namely, Areca catechu, Rheum undulatum, Orostachys japonicus, and Cibotium barometz, exhibited strong in vitro anti-lipase activity above 60% at the 100㎍/ml concentration. Particularly, the methanol extract of Rheum undulatum showed highest pancreatic lipase inhibitory activity as 72.0% followed by Cibotium barometz (70.2%) which were higher than orlistat at the 0.495㎍/ml concentration as positive control. The other 6 kinds of KTMP (Curcuma zedoaria, Rubia akane, Sanguisorba officinalis, Curcuma longa Linn, Artemisia scoparia and Omphalia lapidescens) also showed the over 40% of pancreatic lipase inhibitory activity. To the best of our knowledge, many KTMP have been screened for their pancreatic lipase inhibitory activity in the previously report. However, it’s too small study compared to the entire KTMP. Therefore, our results provide the more valuable information for studied the anti-obesity compounds from Korean traditional medicinal plants.

Printing Industry generates a wide range of products from Newspapers, Magazines, Books to Business Order Forms. Indirectly, Packaging industry and Advertising Industry in many ways depend on the Printing Industry. But then, the more jobs are aligned to digital printing he easier it becomes to align those jobs to electronic distribution. Most of all, printing industry is that consolidation is ongoing because, like other industries, there are so many printers. Indeed, what printers have here is a failure to communicate. Daejeon city of the traditional printing industry demand are order basis. The reason is because of the lack of communication planning skills. Therefore, the introduction of IT and digital technology, specializes in information management and business communications should be proficient to change. printing companies are used to digital files and color, a system that can accommodate the needs of customers long distance, and distribution services, will be important. Particularly marketing campaigns, advertising, content management, and pre-media services, such as secure communications technology, it must be a measure of the development of the printing industry. The printing industry of Taejeon is Daedeok Science town, Taejeon administrative town, Sejong City area linked to the network, at the same time modeling of Taejeon-ChungNam Printing Complex and comprehensive marketing communications business.

This paper presents a novel incineration system to be placed in a toilet available in marine environments. Wastewater from the toilet is one of the biggest causes of marine pollution. In order to protect ocean resources, the sanification of the raw sewage is required. Therefore, a incineration system for sterilization of human waste is needed. The proposed system uses a new incinerator which is a combination of ascensional and rotary devices in order to maximize incineration efficiency. Also, the system uses a non-flammable iron bead in order to prevent the waste from coarsening and hardening. The bead can increase incineration efficiency. The experimental results show the effectiveness of the proposed system.

This study evaluated VanPatten’s Input Processing Theory, which underpins what is known as Processing Instruction. This review revealed that Processing Instruction is more effective than traditional and meaningful output-based instruction, and this effect results mainly from structured input activity. Input Processing Theory has a high level of empirical verifiability and internal explanatory validity. However, it has relatively weak external validity and its scope is limited to input processing. It is expected to continue playing a monumental role as a theoretical framework for empirical research. Implications are discussed in relation to EFL teaching in Korea and the advancement of instructed second language acquisition theory.