• Journal of Korean Society of Transportation
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• v.26 no.3
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• pp.155-167
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• 2008

This paper studies a multiple user class variable demand user equilibrium and system optimal condition, and then establishes solution algorithms for them. The traffic network equilibrium is accomplished with basis on following assumptions. For considering heterogeneous road user, several user classes have discrete set of VOTs and the travel demand of each user classes varies according to generalized travel cost. this paper specifically investigates following question on multi-class variable demand: Are user equilibrium flows pattern dependent on the unit (time or money) perceived by road user classes? What is system optimal condition according to the unit used in measuring the travel cost or disutility? Finally, using this network equilibrium condition, The traffic assignment algorithm of each equilibrium condition are established.

• Journal of Digital Convergence
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• v.13 no.11
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• pp.493-507
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• 2015

This study conducted research on the actual condition of multicultural education in universities and multicultural competence among university students. The overall results are discussed by two sections as follows: The average score of multicultural competence is 3.49, above moderate. The students who rate their multicultural competence high are those who have been abroad, lived in aborad, had foreign friends, or had communicative ability in foreign languages. There were significant differences in multicultural competence among students based on gender and major. Based on the overall results of the study, the several suggestions were made by the researcher as follows: Universities should support students' overseas volunteer program and encourage students to participate in domestic volunteer program for multicultural background groups.

• Korean Journal of Childcare and Education
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• v.9 no.6
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• pp.151-170
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• 2013

This study analyzes the contents of multicultural education in teacher's manual for "Age 3 - 5 Nuri Curriculum." The criteria of identity, diversity, openness, democracy, and community were used to investigate 1,470 activities relevant to multicultural education in Nuri Curriculum, which was published in March, 2013. The findings were categorized into life theme, contents area and activity type. In the life theme, multicultural contents appeared most in 'my town' and 'my country,' while the least in 'spring, summer, fall, winter.' In the contents areas, diversity, identity and community appeared more than democracy and openness. And, these contents included social relationships. In the activity type, multicultural contents are analyzed the most frequently in 'math activity' and 'sharing a story.'

• Journal of Internet Computing and Services
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• v.16 no.3
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• pp.13-20
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• 2015

This paper proposes a Near Field Communication (NFC) communication system that exchanges information of digital business cards efficiently for many to many communication to solve inconvenience of one-to-one communication when people exchanges business cards each other in meetings such as conference, forum, seminar. The proposed system can provide people to exchange contact information one-to-one as well as multiple members at once using a digital business card system that consists a server and a database based on NFC communication. The system has been developed to collect business card information from a NFC reader and to transfer it directly to a smartphone application effectively. The system can manage business card information with the application effectively and provide security in order to prevent from leakage of private information when transferring contact data.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.27 no.1
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• pp.751-760
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• 2009

This research aims to develop the strategy and method to enhance the reliability of image matching results and improve the efficiency of the matching process by utilizing LIDAR data in the main image matching processes. In this work, we present the methods to utilize LIDAR data in the selection of matching entities, the search for the matched entities and the evaluation of the matching results. The proposed method has been applied to medium-resolution digital aerial images and LIDAR data acquired at the same time. The results have been analyzed in comparison with an existing method using a virtual horizontal surface rather than LIDAR DEM. This analysis indicates that the proposed method can show significantly more improved performance than the existing method. The results of this study can contribute to the improvement of the currently available commercial image matching software and the enhancement of the DEM derived from LIDAR data and matching results.

• The Journal of the Korea Contents Association
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• v.20 no.8
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• pp.418-428
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• 2020

This study aims to identify the impacts of parenting attitude, self-esteem and depression on school life adaptation in multicultural family adolescents focusing on the mediating effects of self-esteem and depression. To achieve this purpose, the seventh year of the 2016 Multicultural Youth Panel Survey(MAPS) data was used and among all respondents 1,236 multicultural adolescents under 16 years old whose mothers are foreign were collected. Our study findings are as follows: First, supervision and self-esteem had a positive effect, and neglect and depression had a negative effect on school life adaptation. Second, supervision and neglect had a partial influence on school life adaptation through the mediation of self-esteem and depression. Based on these findings, some practical implications was presented to enhance the adaptability of multicultural familiy adolescents to school life adaptation.

• Journal of Digital Convergence
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• v.12 no.2
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• pp.531-537
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• 2014

In this paper, we introduce a model of the teaching and learning method for multidisciplinary convergence capstone design at Kongju National University's Engineering Department. At Kongju national University, various capstone design works are designed and proceeded by multidisciplinary students at the summer session. The multidisciplinary approach described in this paper includes the involvement of five department's student who have not collaborated in capstone design experience. This study focuses on multidisciplinary capstone design education by using the micro controller board called Arduino Uno that consists of an assortment of sensors and actuators. The result of self-satisfaction survey was shown the meaningful teaching process for the engineering department students who could have more creative and industrial experiences. As a result, we are able to get the result of the possible directions for future technology education in the area of convergence multidisciplinary capstone design.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.36 no.4
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• pp.465-474
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• 2012

In this study, a dynamic simulation model that considers many spherical particles and multibody dynamics (MBD) entities is developed. Plenteous spherical particles are solved using the Discrete Element Method (DEM) technique and simulated on a GPU board in a PC. A fast algorithm is used to calculate the Hertzian contact forces between many spherical particles, and NVIDIA CUDA is used to increase the calculation speed. The explicit integration method is applied to solve the many spheres. MBD entities are simulated by recursive formulation. Constraints are reduced by recursive formulation, and the implicit generalized alpha method is applied to solve the dynamic model. A new algorithm is developed to simulate the DEM and MBD models simultaneously. As a numerical example, a truck car model and gear model are developed. The results show that the proposed algorithm using a general-purpose GPU in a PC has many advantages.

• Journal of KIISE:Computer Systems and Theory
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• v.32 no.10
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• pp.499-506
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• 2005

The growth of networks increase the importance of electronic commerces. Since the fair exchange protocol is an important part of electronic commerces, a number of researches have been done in relation to the fair exchange protocol. As the contract signing protocol is a part of fair exchange protocol, many protocols have been proposed, but most of them were focused on two-party protocol. Only a few were on the multi-party contract signing protocol. So far the optimistic multi-party contract signing protocol presented by Baum-Waidner has the least number of rounds in asynchronous network[4]. But, the lower bound on the number of rounds required by any optimistic multi-party contract signing protocol has been not known. In this paper, we present a tight lower bound on the number of rounds for optimistic multi-party contract signing protocol.

• School Mathematics
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• v.12 no.4
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• pp.639-665
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• 2010

The purpose of this research is to seek for principles and methods of multicultural mathematics teacher education. It began with an overview of theories of multicultural education and of multicultural teacher education in order to address the questions of what is the goal of multicultural education and what constitutes the competence of multicultural teachers. Then, cases of multicultural mathematics teacher education were reviewed. Based on that, this research identified three domains of teacher competence: domains of affect, of cognition, and of behavior. This paper also presented what constitutes each domains of competence and how to promote the development of each type of teachers' multicultural competence. This paper discussed implications to multicultural teacher education in Korean society.