• Journal of Korean Port Research
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• v.14 no.1
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• pp.77-86
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• 2000

The planning process of complex projects in oceanic architectural engineering is characterized by the cooperation of many involved specialists and by a high degree of information exchange. In order to improve the quality of the structural design of oceanic buildings, information of different involved partners in the planning process has to be integrated. This paper aims to introduce a concept of the integrated structural design for the floating-type oceanic building using STEP(Standard for the Exchange of Product Model Data). STEP(ISO 10303) is an international standard for the computer-interpretable representation and exchange of product data and it provides a consistent data exchange format and application interfaces between different application systems. In this paper, the structural design process and information of oceanic buildings is analyzed and product models are preposed fir the exchange of the structural design information between superstructure and floating structure. The entities for calculating wind loads, metacenter and restoring forces are represented by Express. As a case study a floating hotel is applicated to describe the STEP physical file.

• Proceedings of the Computational Structural Engineering Institute Conference
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• 1998.10a
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• pp.352-361
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• 1998

The post-processing modules are parts of an integrated system for reinforced concrete structures. This modules are composed of two modules: member design module and calculation report module. The purpose of this paper is to develope modules that increase efficiency and usefulness of an integrated system used reinforced concrete structures design. The development of post-processing modules is necessary for user to design reinforced concrete structures conveniently and quickly. This modules are connected with central database for the benefit of storing amount of input/output data and being used system with little effort. Post-processing modules used Object-Oriented concepts and techniques include identity, classification, polymorphism, and inheritance. Member design module automatically converts no good members into satisfied members by changing section size or reinforcement bar arrangement. This module can be operated both independent member design modules with user input and a part of integrated system with database input. If user operates member design module, calculation report module is created automatically.

• Proceedings of the IEEK Conference
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• 2006.06a
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• pp.521-522
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• 2006

This paper presents behavioral models using SIMULINK and Verilog-a for a PLL based fractional-N frequency synthesizer. The SIMULINK modeling was built in the frequency-time mixed domain whereas the Verilog-a modeling was built purely in the time domain. The simulated results of the two models were verified to show the same performance within the error tolerance. This top-down design method can provide the readiness for the transistor-level design.

• Proceedings of the IEEK Conference
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• 2006.06a
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• pp.523-524
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• 2006

Successive approximation A/D converters have an advantage of small chip area and simple algorithm. We propose an improved non-redundant successive approximation register (SAR) which can be incorporated in successive approximation A/D converters. The proposed SAR validates the preset state as the $1^{st}$ reference voltage to the comparator. Two redundant clock cycles in the typical design could be eliminated in the proposed A/D converter.

• Proceedings of the IEEK Conference
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• 2006.06a
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• pp.625-626
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• 2006

An Ultra low power super-regenerative oscillator was implemented with on-chip inductor and quench signal generator. The super-regenerative oscillator detects the signal level as low as -70dBm while consuming only 0.48mA at 1.5V supply voltage. These results indicate that the super-regenerative oscillator can be outstanding candidate the simple, ultra low power receiver design.

• IE interfaces
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• v.20 no.4
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• pp.438-447
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• 2007

This paper presents an aspect-oriented approach to simulation design and analysis in system design phase for integrated logistics system simulation. The integrated logistics system composed of AS/RS (Automated Storages and Retrieval System), AGVs (Automated Guided Vehicle System), STVs (Sorting Transfer Vehicle System) and Conveyor System is designed by using the aspect-oriented approach and UML (Unified Modeling Language). The multi-factorial design of experiments and regression analysis are used for design parameters of the system and Evolution Strategies is used to verify each parameter. Aspect-oriented approach for the integrated logistics system simulation shows the advantages of code reusability, extendible, modulation, easy improvement and a better design technique.

• Journal of Science Education
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• v.45 no.3
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• pp.364-378
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• 2021

This study explores the perception of Engineering Design of teachers who have long experience in the Integrated STEAM education. The teachers participating in this study were 12 elementary and secondary teachers with more than five years of experience in the Integrated STEAM Education. The study conducted semi-structured interviews. Interview questions focused on experiences of Integrated STEAM Education and recognition of Engineering Design, whether or not to reflect the curriculum of Engineering Design, and actual cases of Integrated STEAM Education with Engineering Design. As a result of this study, the teachers who participated in this study recognized that 'identification and coexistence of concepts for science, technology, and engineering' about Engineering Design, 'Creative design is possible when creativity is added to Engineering Design', 'Engineering Design is to analyze the economic feasibility and utility of the output created through the creative design process', 'Engineering Design is only for students who choose a career in science and engineering'. Based on this research, We need to establish and present correct concepts for science, technology, and engineering, and make an effort to include Engineering Design for solving scientific problems in the curriculum. In addition, we will have to develop and spread the Integrated STEAM Education program including Engineering Design and apply it in the field. Through this, we will have to find concrete action plans to improve the perception of science and engineering Integrated STEAM programs and Engineering Design among novice teachers and preservice teachers.

• Journal of the Korean Solar Energy Society
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• v.30 no.4
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• pp.63-70
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• 2010

This study introduce a architectural design process by the changes of sustainable design guidelines in public project. First of all, this study examines existing integrated design process studies performed by Rhee & U.B.C. Also, this study examines sustainable guidelines which demanded by public building projects. Then, this study introduces sustainable design process using existing sustainable design process, and shows that how to operate and proceed integrated design to satisfy the sustainable guidelines in practice. The results of this study are as follows. (1) Since 2007, sustainable design guidelines of bidding projects have been highlighted. (2) In public buildings, energy saving is very important issue. Especially energy certification demands 1st degree(under $300kWh/m^2{\cdot}yr$). (3) Inp ractice, integrated design team performed sustainable design using the sustainable design process to improve sustainable in public buildings.

• Proceedings of the Computational Structural Engineering Institute Conference
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• 1992.04a
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• pp.79-84
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• 1992

An integrated design system has as its aim the incoporation of all the design processes, such as, planning, preliminary design, analysis, detailed design (mamber design), evaluation, and drafting into an unified software system. Successful implementation such a system could lead to major improvements in efficiency by eliminating duplication of data and efforts. reducing errors, saving design time, providing management support, and so on. This study presents a methodology for an computer-integrated design system for building structures, synthesizing algorithmic procedures and knowledge based expert systems on the network database. Network database, which was designed to store all information systematically during the design processes, provides centeral communication area between algorithms and expert systems. The conventional procedural codes automate the routine design phases such as structural analysis, whereas knowledge-based expert systems support designer's decisions at the creative design phases such as preliminary design etc. The user interface with interactive and batch modes controls the design phases and manages design information and activates the algorithms and the expert systems. The concept presented in this paper will contribute to the formulation of automated design systems for building structures.

• Proceedings of the Korea Society of Design Studies Conference
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• 1995.11a
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• pp.70-73
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• 1995