• Journal of Digital Contents Society
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• v.15 no.2
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• pp.197-207
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• 2014

Many people are now enjoying mobile games using various smartphone platforms. However, we have to develop games separately for each smart device platforms so far. Cocos2d-x, a game development framework is released to solve this problem. As a multiplatform version of the existing Cocos2d, Cocos2d-x can make one source code run on various platforms. It is an open software that is able to be used by everyone, and when using it, mobile games can be developed easily based on C++ and OpenGL. In this paper, we implemented a PC laboratory decorating game application, named ILove501, using Cocos2d-x. The 501 is a room number of our PC lab. ILove501 includes an educational feature of solving quizzes in order to highlight positive effects of game. For implementation of a multiplatform game, ILove501 was developed in Windows and iOS environment at the same time, and we verified the results of the execution by porting on a variety of devices such as Android, iPhone, iPad and Galaxy Tab.

• The Journal of the Korea Contents Association
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• v.12 no.2
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• pp.142-153
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• 2012

This study investigated a current situation of cable TV in order to seek and suggest cable TV's competitive superiority in the era of multiplatform media marketplace. This study suggested cable TV's direction from two aspects, short-term and mid and long-term strategies. As a result, it recommended that cable TV industry need to establish content circulation representatives, and reinforce multiformat contents suitable for various multiplatform uses, digital cable promotion, production of SO's originated programs, HD VOD, bundling services and diverse programs. As a long-term strategy, this study also suggested cable TV industry need to cooperate with smart TV industry in order to widen openness of its platform, and to provide not only diverse contents but also applications by offering two-way, mobile, and on-demand contents and services. Finally, this study proposed cable TV is needed to move towards a comprehensive media portal, which is a contents aggregator with the aforementioned business strategies.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2003.10a
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• pp.453-456
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• 2003

Spatial database systems achieve filtering steps with MBR(Minimum founding Rectangle) for efficient query processing, and then carry out refinement steps for candidate objects. While most operations require fast execution of filtering, it is necessary to increase the filtering rates and reduce the number of refinement steps in the low computing powered devices. The compact representation method is also needed in the mobile devices with low storage capacity. The paper proposes various approximation methods for efficient spatial operations in the multiplatform environments. This paper also designs a compression technique for MBR, which occupies almost 80% of index data in the two dimensional case. We also analyze the advantages and drawbacks of each method in terms of space utilization, filtering efficiency and speed.

• 제어로봇시스템학회:학술대회논문집
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• 2003.10a
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• pp.2159-2163
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• 2003

Hand carried computing machinery and tools have been developed into an embedded system which the small footprint operating system is contained internally. Windows CE which is one of imbedded operating system is a lightweight, multithreaded operating system with an optional graphical user interface. Its strength lies in its small size, its Win32 subset API, and its multiplatform support. Therefore we choose to port this OS on Arm based board that is provided high performance, low cost, and low power consumption. In this paper, we describe the architecture of ARM based board, the feature of Windows CE, techniques and steps involved in this porting process.

• Proceedings of the Korean Information Science Society Conference
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• 2004.10c
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• pp.73-75
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• 2004

본 논문에서는 멀티플랫폼 환경에서 헙력학습을 지원하는 e-Learning 시스템을 소개한다. 현재 IT 기술이 발전하면서 학습을 할 수 있는 단말의 종류는 과거에 비해 다양하다. 이러한 다양한 단말로 학습콘텐츠를 상호운용 시키기 위해서는 콘텐츠의 적응화가 필요하다. 본 연구에서는 적응화 방법을 소개하며 적응화를 위한 시스템의 architecture를 소개한다. 본 논문에서는 두 가지 적응화 방법을 고려한다. 학습콘텐츠 레이아웃 적응화와 학습자원의 적응화가 고려된다. 또한 학습효율을 향상하기 위해 협력학습을 지원하는 기술을 개발한다. 현재 ISO/IEC JTC1 SC36 WG2에서 헙력학습에 관한 기술표준을 추진 중이므로 본 논문에서는 SC36의 초안에 따라 기술을 개발하여 추후 국제표준을 선도할 것이다.

• Proceedings of the Korean Information Science Society Conference
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• 2003.10a
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• pp.889-891
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• 2003

운영체제 시스템 및 관련 응용 프로그램들은 프로그램 개발 과정의 특성상 보안 취약성을 가지고 있다. 이와 같은 보안 취약성을 악용하는 침해사례가 최근 증가하고 있으며, 그 피해의 파급효과가 더욱 커지고 있다. 침해사고 예방의 기본적인 방법은 보안 취약성을 제거하는 패치의 실시간적인 설치이다. 그러나, 대부분 관리자의 관리가 미숙하여 각 사이트에 가서 패치를 다운받아 설치하는데 어려움을 느끼고 있다. 본 논문에서는 중앙의 패치관리서버가 Windows, UNIX, LINUX 벤더들로부터 패치를 다운받아 패치를 필요로 하는 시스템들을 선별하여 안전하게 패치를 자동분배하고, 설치하는 시스템을 제안한다. 멀티플랫폼을 지원하는 패치 자동관리시스템을 이용하여 그때그때 필요한 패치가 신속하게 설치됨으로써 시스템의 보안성을 높일 수 있다.

• Journal of Korea Multimedia Society
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• v.7 no.6
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• pp.814-823
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• 2004

Current video games and game room games are played as a single player mode on the basis of various emulators. With the evolution of data communications and game technology, a new trend in the game industry has made the primary interests of game developers and companies in the game industry be moved toward a multiplayer mode from the traditional single player mode. In this paper, we represent how to implement a network game platform by allowing network modules to be run in conjunction with the current video emulator games. It also suggests a synchronization scheme for real-time game playout and practical mechanism that can support network games to be played with the Peer-to-Peer process using a lobby system.

• Genomics & Informatics
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• v.10 no.1
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• pp.1-8
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• 2012

Recently, the technologies of DNA sequence variation and gene expression profiling have been used widely as approaches in the expertise of genome biology and genetics. The application to genome study has been particularly developed with the introduction of the nextgeneration DNA sequencer (NGS) Roche/454 and Illumina/ Solexa systems, along with bioinformation analysis technologies of whole-genome $de$ $novo$ assembly, expression profiling, DNA variation discovery, and genotyping. Both massive whole-genome shotgun paired-end sequencing and mate paired-end sequencing data are important steps for constructing $de$ $novo$ assembly of novel genome sequencing data. It is necessary to have DNA sequence information from a multiplatform NGS with at least $2{\times}$ and $30{\times}$ depth sequence of genome coverage using Roche/454 and Illumina/Solexa, respectively, for effective an way of de novo assembly. Massive shortlength reading data from the Illumina/Solexa system is enough to discover DNA variation, resulting in reducing the cost of DNA sequencing. Whole-genome expression profile data are useful to approach genome system biology with quantification of expressed RNAs from a wholegenome transcriptome, depending on the tissue samples. The hybrid mRNA sequences from Rohce/454 and Illumina/Solexa are more powerful to find novel genes through $de$ $novo$ assembly in any whole-genome sequenced species. The $20{\times}$ and $50{\times}$ coverage of the estimated transcriptome sequences using Roche/454 and Illumina/Solexa, respectively, is effective to create novel expressed reference sequences. However, only an average $30{\times}$ coverage of a transcriptome with short read sequences of Illumina/Solexa is enough to check expression quantification, compared to the reference expressed sequence tag sequence.

• Structural Engineering and Mechanics
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• v.30 no.3
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• pp.331-350
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• 2008

A framework for multi-platform analytical and multi-component hybrid (testing-analysis) simulations is described in this paper and illustrated with several application examples. The framework allows the integration of various analytical platforms and geographically distributed experimental facilities into a comprehensive pseudo-dynamic hybrid simulation. The object-oriented architecture of the framework enables easy inclusion of new analysis platforms or experimental models, and the addition of a multitude of auxiliary components, such as data acquisition and camera control. Four application examples are given, namely; (i) multi-platform analysis of a bridge with soil and structural models, (ii) multiplatform, multi-resolution analysis of a high-rise building, (iii) three-site small scale frame hybrid simulation, and (iv) three-site large scale bridge hybrid simulation. These simulations serve as illustrative examples of collaborative research among geographically distributed researchers employing different analysis platforms and testing equipment. The versatility of the framework, ease of including additional modules and the wide application potential demonstrated in the paper provide a rich research environment for structural and geotechnical engineering.

• Proceedings of the Korea Information Processing Society Conference
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• 2001.04b
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• pp.1113-1116
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• 2001

최근 컴퓨터 및 컴퓨터 통신의 발달은 서로 다른 플랫폼에 접근할 수 있는 기회를 증가시키고 있으며, 이와 더불어 새로운 하드웨어 및 운영 체제의 지속적인 출현은 멀티플랫폼 소프트웨어에 대한 요구를 증가 시켜왔다. 따라서 프로그래머는 새로운 소프트웨어를 개발하거나 기존의 소프트웨어를 포팅할 때, 멀티플랫폼에서의 실행을 염두에 두어야 하는데 이를 위한 도구의 설계 및 프로토타입 구현[11]에 대해서 이미 소개한 바 있다. 본 논문에서는 기존의 GNU 시스템 도구들과 연계되어 개발된 이 포터블 프로그래밍 도구를 활용하여 멀티플랫폼 소프트웨어를 제작하는 단계를 서술하고 이 때 우리의 도구가 어떤 역할을 하는지에 대해서 논한다.