• Journal of the Korea Institute of Information and Communication Engineering
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• v.14 no.11
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• pp.2586-2592
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• 2010

Currently social network games with an emphasis on the relationship between the friends, especially women users and the elderly users of over forties, have contributed to the expansion of game market attracting large audiences. Though recent interest in social network games and the explosive propagation of social network game into game industry, scholarly research for social network game is insufficient. The objective of the study is to explore the success factors for successful social network games through the depth interview with game experts. We suggest the guidelines for development of social network game. Commercial success of social network games and the number of users with the best game, farmville, were investigated for understanding key success factors in social network game field. As a result, social interaction, simple interface, asynchronous method, instrumental rationality factors have been identified. This result of the study will expect the guideline in order to develop a successful social network games.

• The Transactions of the Korea Information Processing Society
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• v.7 no.9
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• pp.2876-2884
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• 2000

Clausal segmentation is the method that parses Korean sentences by segmenting one long sentence into several phrases according to the predicates. So far most of researches could be useful for literary sentences, but long sentences increase complexities of the syntax analysis. Thus this paper proposed Two-Level Clausal Segmentation using sense information which was designed and implemented to solve this problem. Analysis of clausal segmentation and understanding of word senses can reduce syntactic and semantic ambiguity. Clausal segmentation using Sense Information is necessary because there are structural ambiguity of sentences and a frequent abbreviation of auxiliary word in common sentences. Two-Level Clausal Segmentation System(TLCSS) consists of Complement Selection Process(CSP) and Noncomplement Expansion Process(NEP). CSP matches sentence elements to subcategorization dictionary and noun thesaurus. As a result of this step, we can find the complement and subcategorization pattern. Secondly, NEP is the method that uses syntactic property and the others methods for noncomplement increase of growth. As a result of this step, we acquire segmented sentences. We present a technique to estimate the precision of Two-Level Clausal Segmentation System, and shows a result of Clausal Segmentation with 25,000 manually sense tagged corpus constructed by ETRl-KONAN group. An Two-Level Clausal Segmentation System shows clausal segmentation precision of 91.8%.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.1
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• pp.837-844
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• 2015

The purpose of this paper is to suggest the method of creation and management of urban green field based on carbon emission reduction. For a case study, Daejeon Metropolitan City in Korea was chosen. For the study, the relevant concepts of green field and carbon emission plans are reviewed as a theoretical research, and current problems of the urban green field are surveyed focused on metropolitan cities in Korea. Implementation plans of park and green in Daejeon Metropolitan City were analysed in the aspect to carbon emission reduction, climate change responding and urban green field expansion. Finally, as a result of the study, the method of creation and management of urban green field based on carbon emission reduction in the perspectives of urban structure change, green field network, conservation of green field and relevant institutions are suggested.

• International Journal of Highway Engineering
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• v.18 no.3
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• pp.75-86
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• 2016

PURPOSES : The purpose of this study is to investigate characteristics of crack spacing and crack width and their relationship in continuously reinforced concrete pavement (CRCP) based on the data obtained from long-term field observations. METHODS : The crack spacings and crack widths are measured periodically over 10 years at two different CRCP sections: one with asphalt bond breaker beneath concrete slab, and the other with bonded lean concrete base beneath concrete slab. The effects of steel ratio, type of underlying layer, terminal treatment method, and seasonal temperature change on the crack characteristics are evaluated by analyzing the measured data. RESULTS : The CRCP with lean concrete base shows smaller crack spacings than those of the CRCP with asphalt bond breaker. As the steel ratio increases, both the crack spacing and crack width tend to decrease. The crack width becomes larger as the crack age increases, but once the crack age is over a certain value the crack width tends to converge. When the terminal anchor lug system is not used and the expansion joints are employed at the terminals, the crack spacings and crack widths increase near the terminal sections. The crack spacing and crack width seem to be proportional each other, but not necessarily linearly, and their relationship is more distinguished in the summer when the crack widths become smaller. CONCLUSIONS : The steel ratio, underlying layer type, terminal treatment method, and seasonal temperature change affect the characteristics of cracks and the crack spacing and crack width are related to each other.

• Composites Research
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• v.14 no.5
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• pp.1-11
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• 2001

The particulates reinforced metal matrix composites(PMMC) have a number of interesting mechanical properties. including high strength and good resistance to wear at high temperature and low thermal expansion. The equipment structure to obtain the homogeneous distribution in composites are proposed for the continuous pouring of reinforcement at the desired temperature. The particulates reinforced metal matrix composites(A357/SiCp) were fabricated by the process of the combined stirring method with the various fabrication process. The combined stirring method to niform distribution of particle is consisted of two stirring force both electro-magnetic stirring generated from induction heating and mechanical stirring with graphite stirrer. PMMC billets were fabricated with the volume fractions ranged from 0% to 20% and particle sizes ranged from 14${\mu}{\textrm}{m}$ to 25${\mu}{\textrm}{m}$. It is important to cont the size of primary $\alpha$-Al solid particles because it could become the cause of the particle pushing or capture phenomena from the fact that secondary dendrite arm spacing size depends on the cooling rate during the solidification in hypoeutectic Al-Si alloy. Therefore, the effect of primary $\alpha$-Al on the reinforcement distribution in matrix alloys has been investigated. The microstructure of PMMC fabracated with various volume fractions(0%, 10%, and 20%) and particle size were observed.

• Journal of The Korea Institute of Healthcare Architecture
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• v.21 no.3
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• pp.69-77
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• 2015

Purpose: Under a trend of hospitals that repeated expansion in line with fast increasing factors of medical demands in the past, medical buildings where clinic businesses have regularly gathered in one building have exponentially increased since separation of prescribing and dispensing in 2000. Thus, this study aims at analyzing characteristics of architectural plan of the current medical buildings, identifying strengths and weaknesses through Post Occupancy Evaluation and suggesting an architectural planning method of medical buildings to be planned in the future. Methods: Scope of study has been limited to 23 medical buildings that are registered in the building register as medical buildings out of the Class 1 neighborhood facilities build as 5 floors or more in Cheongju region since 2000 and being actually used for the usage. Study method is to define concepts of the medical buildings through literature review and advanced researches, analyze characteristics of architectural plan through drawing analysis and site survey. Results: General characteristics of architectural plans for the medical buildings in Cheongju have been analyzed. There are the most frequencies in general commercial area and semi-residential area, most of them are reinforced concrete structure and the Class 1 neighborhood facilities. Average land area is $482.68m^2$, gross floor area $3720.8m^2$, the number of underground floors level 1.16, the number of floors level 7.76, total number of floors 8.92, the building-to-land ratio 67.28%, floor area ratio 452.6%, height 31.44m, and the number of parked vehicles 24.16. Implications: This research will contribute to the establishment of the planning methods which increase the quality of Medical Buildings in Cheongju.

• The Journal of Korea Institute of Information, Electronics, and Communication Technology
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• v.11 no.3
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• pp.246-252
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• 2018

Recent studies have been received much attention on underwater laser communication, which is capable of high data rate. However, in underwater laser communication, distortions caused by absorption and scattering induced performance degradation. A typical way to improve performance is to apply channel coding technique. In the beginning of studies, simple methods such as RS and BCH coding techniques were applied. However, due to distance expansion and performance improvement, channel coding methods with low error probability such as LDPC coded method were applied. In this paper, we analyzed the performance according to the size of the code word N, the distance between the transceivers and the size of the M of the M-ary PPM modulation scheme. Simulation results show that parameter M of M-ary PPM is most effect on performance.

• Journal of the Korean Society for Heat Treatment
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• v.28 no.6
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• pp.300-309
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• 2015

The aim of the present study was to predict the variations in microstructure and deformation occurring during gas carburizing and quenching processes of a SCM420H planetary gear in a real production environment using the finite element method (FEM). The motivation for the present study came from the fact that previous FEM simulations have a limitation of the application to the real heat treatment process because they were performed with material properties provided by commercial programs and heat transfer coefficients (HTC) measured from laboratory conditions. Therefore, for the present simulation, many experimentally measured material properties were employed; phase transformation kinetics, thermal expansion coefficients, heat capacity, heat conductivity and HTC. Particularly, the HTCs were obtained by converting the cooling curves measured with a STS304 gear without phase transformations using an oil bath with an agitator in a real heat treatment factory. The FEM simulation was successfully conducted using the aforementioned material properties and HTC, and then the predicted results were well verified with experimental data, such as the cooling rate, microstructure, hardness profile and distortion.

• The Journal of the Korea Contents Association
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• v.12 no.4
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• pp.263-272
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• 2012

In an attempt to analyze the policy priority on civil servant's education training policy as human resource management in this study, a positive analysis with the experts using AHP method was conducted. Summarizing the outcome of the study; First, in terms of relative priority of the evaluation elements by sector, the education training operation system, among education training program, education training evaluation, and education infrastructure, was analyzed as the most important element. Second, as a result of analyzing the priority of detail sectors of civil servant's education training, Action learning education program was proved to be the top priority project education training program aspect and education training operation system was also evaluated as the top priority project in education training agency budget expansion aspect, education training and personnel administration link was evaluated as the top priority project education training evaluation, and trainer secure was proved to be the top priority education infrastructure. Such outcome of the project is expected to make commitment for evaluating the civil servant's education training policy.

• The Journal of the Korea Contents Association
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• v.20 no.10
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• pp.369-384
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• 2020

This study explored and described how seniors cope with adversities, how they perceive the counseling and what they expect from it, including the difficulties and barriers when using psychological counseling, through direct reports of the seniors. Data was collected from 56 elderly people living in Gyeonggido through interviews. The collected data was analyzed using the CQR-M method. The result yielded 6 domains, which are the ways to deal with adversities, feelings or thoughts about counseling, motivations for counseling, why peoples mind getting counseling, expectations for counselor, expectations for counseling effect. Based on the results, the ways to increase the level of participation and consideration for counseling by the elderly are suggested including case management, the expansion of counseling areas, the formation of sincere relationships, the consideration of counseling methods with activities and the enhancement of expertise.