• Structural Engineering and Mechanics
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• v.48 no.6
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• pp.775-789
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• 2013

The current paper proposes a boundary element formulation, applicable to 2-D and 3-D elastostatics problems using a unified approach for transformations of the domain integrals into boundary integrals. The method is applicable to linear problems encompassing both finite and infinite multi-region domains allowing non-vanishing body forces. Numerical results agree quite well with the analytical solutions; while the present method offers easy formulation with less numerical efforts in comparison to FEM or some BEM which need interior points to treat arbitrary body forces. It is demonstrated that the method has the potential to have profound impact on engineering design, notably in dam-foundation interaction.

• 제어로봇시스템학회:학술대회논문집
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• 2004.08a
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• pp.413-416
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• 2004

The tracking antenna system must be always pointed to a satellite for data link among moving vehicles. Especially, for an antenna mounted on a moving vehicle, it needs the stabilized the antenna system. So, software and hardware, signal processing of motion detection sensors, real-time processing of vehicle dynamics, trajectory estimation of satellite, antenna servo mechanism, and tracking algorithm, are unified in the antenna system. The purpose of this paper is to design the embedded tracking antenna control system for satellite communication. The embedded OS(Operating System) based stabilization and tracking algorithm was implemented. The performance of the designed embedded control system was verified by the real satellite communication test.

• Journal of Institute of Control, Robotics and Systems
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• v.15 no.6
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• pp.626-633
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• 2009

A motion planning algorithm is presented in this paper for a commercialized quadruped walking of robot pet. Stable walking is the basic requirement for a commercial-purpose legged robot. In order to secure the walking stability, modified body sway to the centroid of support polygon is addressed. By representation of walking motion with respect to the world coordinate system rather than body coordinate, it is possible to design the several gaits in unified fashion. The initial gait posture is introduced to maximize the stride and to achieve fast walking. The proposed walking motion planning is verified through computer simulation and experiments.

• Computational Structural Engineering
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• v.1 no.1
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• pp.95-102
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• 1988

I-BUILDS is the building design expert system conceptually modeled for synthesizing the conventional CAD programs (BUILDS; an integrated BUILding Desing System) and the knowledge base into an unified system. As a part of the efforts to build this system, this paper presents the conceptual model by which the data items generated by inference are transformed into a formatted input file to be used for several BUILDS subsystems, each of which is assigned to have various computational capabilities and to perform specialized task.

• Journal of Urban Science
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• v.6 no.2
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• pp.11-16
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• 2017

Giuseppe Terragni was one of the founding member and a leading Italian Rationalist pursued a new and more rational synthesis between the nationalistic values of Italian Classicism and structural logic of the machine age. Casa Giuliani Frigerio, a four-story apartment housing in Como, is one of his last major work and is worth to investigate the composition of facades in terms of ambiguity. Unlike the Casa del Fascio, it is never possible to read an priori whole and to allow static and unified readings in a traditional alignment. Due to its misalignments found within the facades of Casa Giuliani Frigerio, it is evident to present unstable and disjunctive readings. These distinctive facades are read as layers applied onto some equally unstable underlying layer and form an ensemble of unexpected unity.

• Proceedings of the Korea Committee for Ocean Resources and Engineering Conference
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• 2003.10a
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• pp.76-80
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• 2003

A resource management system of for the paper-bag product company was made. The objective of the system is computering the hand writing management process to improve the performance of working process of the small company. For this, some programming and design strategies were made such as the simplification, ease to use, similarity with old system and object oriented concept. It is expected to reduce burdens and errors of hand writing and improve the efficiencies of small company.

• The Journal of Information Technology and Database
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• v.7 no.2
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• pp.33-45
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• 2000

Uniview system is a client-server system that runs on heterogeneous distributed systems and supports the debugging of various kinds of programs. Its client system provides a unified debugging concept and interface on various debuggers of heterogeneous hosts. Its server system provides debugging services and features openness and scalability by interoperating with one or more debugger processes existing on the same host. Based on FSF(Free Software Foundation)'s gdb and Sun Microsystems's dbx. Uniview system supports C/C++ programming language in various UNIX environments as well as Windows environments. The proposed system was designed and implemented to support the JAVA language, which is prevalently used in recent heterogeneous distributed systems and was partly extended to make a clear analysis of JAVA class file structure. Sun Microsystems's Jdb supplied as a JAVA debugger has very limited functions compared to other programming language debugger. In this paper, Uniview as a JAVA debugging system was implemented to provide debugging technologies which are necessary to debug Java applications but missing in current JAVA language as well as to provide its users with various information.

• Journal of Sensor Science and Technology
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• v.16 no.2
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• pp.110-114
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• 2007

In this paper we present 3-D Navigation View, a three-dimensional visualization of indoor environment which serves as an intuitive and unified user interface for our developed indoor location tracking system via Virtual Reality Modeling Language (VRML) in web environment. The extracted user's spatial information from indoor location tracking system was further processed to facilitate the location indication in virtual 3-D indoor environment based on his location in physical world. External Authoring Interface (EAI) provided by VRML enables the integration of interactive 3-D graphics into web and direct communication with the encapsulated Java applet to update position and viewpoint of user periodically in 3-D indoor environment. As any web browser with VRML viewer plug-in is able to run the platform independent 3-D Navigation View, specialized and expensive hardware or software can be disregarded.

• Knowledge Management Research
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• v.14 no.1
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• pp.121-132
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• 2013

In education, innovative ways of teaching and learning are always under development and keep being proposed with advanced concepts since the ancient times. Student-centered learning, problem-based learning and cooperative learning have been three major trends under development in secondary education research and practice more than a decade or so. Combined with advanced information and communication technologies, these trends will greatly transform the way we teach and learn in classroom environment and may change the classroom environment itself, into a more interactive and self-centered coaching type environment. In this study, a smart environment that utilizes advanced information technology devices and network is conceptualized, accommodating requirements contained and proposed in the recent trendy pedagogies. Pedagogical cases discussed in these trends are analyzed in detail, producing requirements for such a learning and coaching environment. These requirements are modeled using unified modeling language, leading to a proposal of a basic architecture for an information system supporting this environment.

• Proceedings of the Korean Information Science Society Conference
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• 1998.10b
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• pp.475-477
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• 1998

객체 지향 기법의 확산으로 인하여 많은 객체 지향 표기법과 객체 지향 CASE(Computer Aided Software Engineering) 도구가 발표되고 있다. 특히 1995년 이후로 Booch, Rumbaugh 그리고 Jacobson에 의하여 정의되어 계속적인 정제 과정을 거치고 있는 UML(Unified Modeling Language)은 OMG(Object Management Group)에 의하여 객체 지향 표기법의 표준안으로 채택될 가능성이 높은 가장 우수한 표기법으로 지목되고 있다. 본 논문에서는 기존에 가지고 있었던 OMT(Object Modeling Technique) 지원 도구인 OODesigner의 개발 경험을 이용하여 새로히 설계 구현한 UML 지원 CASE 도구인 AOModeler의 개발 결과를 제시한다. 기존에 존재하는 대부분의 CASE 도구들은 플랫폼에 의존적인 구현 언어로 작성되어 있기 때문에 이식성이 매우 부족하였다. 따라서 도구 개발자는 PC용 도구와 Unix용 도구를 따로 개발할 수밖에 없었다. 이식성과 관련한 문제점을 해결하기 위해서 본 논문에서는 Java 언어로 AOModeler를 구현하였다. 더욱이 C++로 기존에 구현한 OODesiner의 설계 문서와 원시 코드를 재사용하는 방식으로 본 도구를 구현하였기 때문에 생산성 있는 도구 개발을 이룰 수 있었다.