• Title/Summary/Keyword: Design code

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Optical CDMA Network Codecs with Symmetric Balance Incomplete Block Design Code and Arrayed-Waveguide Grating (Symmetric Balance Incomplete Block Design Code와 Arrayed-Waveguide Grating을 이용한 Optical CDMA Network Codecs)

  • Jhee, Yoon-Kyoo
    • Journal of the Institute of Electronics Engineers of Korea SD
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    • v.49 no.5
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    • pp.22-29
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    • 2012
  • By using the cyclic properties of symmetric balance incomplete block design(BIBD) codes and arrayed-waveguide grating(AWG) routers, a compact optical CDMA network coder-decoder(codec) can be constructed. It can be observed that the various code families obtained by BIBD improve the BER performance compared to M-sequence code.

Two Messages out of One 2D Matrix Bar Code

  • Cvitic, Filip;Pavcevic, Mario Osvin;Pibernik, Jesenka
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.9 no.3
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    • pp.1105-1120
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    • 2015
  • With the proposed principle of two-dimensional matrix bar code design based on masks, the whole surface of a 2D bar code is used for creating graphic patterns. Masks are a method of overlaying certain information with complete preservation of encoded information. In order to ensure suitable mask performance, it is essential to create a set of masks (mask folder) which are similar to each other. This ultimately allows additional error correction on the whole code level which is proven mathematically through an academic example of a QR code with a matrix of size $9{\times}9$. In order to create a mask folder, this article will investigate parameters based on Weber's law. With the parameters founded in the research, this principle shows how QR codes, or any other 2D bar code, can be designed to display two different messages. This ultimately enables a better description of a 2D bar code, which will improve users' visual recognition of 2D bar code purpose, and therefore users' greater enjoyment and involvement.

International Code of Safety Regulation for High Speed Craft - as compared with Fire Safety Regulation- (고속선의 새로운 국제안전규칙 -화재안전규칙에 대하여-)

  • 박영규;신영식
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.3 no.1
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    • pp.111-123
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    • 1997
  • The application of all regulations during building phase, plus constant vigilance in operation is essential to reducing the risk of fire aboard. A Safety by design approach is increasingly important. Fire safety regulation can solve problems which are hard to be solved by HSC code(International Code of Safety for High Speed Craft). Recently HSC code is applied for ship design development or guidance to the designer and demonstrates many advantages. In this pages, ship fire Safety are realistically modeled as ship design and the shipboard fires & muster stations are analyzed using HSC Code.

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Generation of Seismic Environment and Design Code Compatible Representative Earthquake Motion (지진환경과 설계기준과 호환하는 대표 입력 지진파의 생성)

  • Jeong, Chang-Gyun;Park, Du-Hee
    • Proceedings of the Korean Geotechical Society Conference
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    • 2010.03a
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    • pp.771-776
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    • 2010
  • Since the importance of seismic design is greater, dynamic analysis is more widely using than past. The input motion is one of the most important factors of dynamic analysis. However, in Korea input motions are selected from U.S. and Japan those are captured from large magnitude earthquakes without considering seismic environment or generated in frequency domain. In this research, the methodology for generating input motions those are considered seismic environment and design code is proposed. The seismic environment compatibility is considered by performing deaggregation and the design code compatibility is considered by time-domain artificial time history accelration generation method. The results shows that seismic environment and design code compatible input motions are successfully generated.

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Evaluation of Design Program of Low-Noise Axial Fan (축류형 송풍기 저소음 설계 프로그램의 개발 및 평가)

  • 김기황;박준철;김진화;이승배
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2001.05a
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    • pp.967-972
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    • 2001
  • An axial fan design code, called iDesignFan$^{TM}$, was developed. In this code, three major loss models were used to predicted the aerodynamic performance of a fan. The overall sound pressure level, predicted from steady blade loading, is also used as an input parameter from the third loop of the designing process to acquire most silent fan for the given aerodynamic performance parameters. With this kind of inverse design concept used in this code, the period of designing a fan, which has given aerodynamic performance with minimal acoustic noise, is significantly shortened. The experimental results of a prototype fan, designed by this code, showed that aerodynamic and acoustic performance of an axial fan is reasonably well predicted. Thus, one can design/develop an axial fan in a short time by using the code.e.

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A Design and Implementation of JiKU/XML Object-oriented Code Generator Using for Design Pattern (디자인 패턴을 이용한 JiKU/XML 객체지향코드 생성기 설계 및 구현)

  • Sun, Su-Kyun
    • The KIPS Transactions:PartD
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    • v.11D no.4
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    • pp.907-916
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    • 2004
  • The present code generation system, developing based on single system, Is not easy for developers or maintenance men to share pattern design information in distribution environment. So in this paper, we design and implement XML as basis of web environment, and JiKU/XML object-oriented code generator using pattern design. We use UML to change pattern design to XML code, and create code, suitable to PIML command, to generate design information designed by UML into XML code. This JiKU/XML Object-oriented Code Generator makes 10-step codes, and can be easily applied to web environment. It complements the disadvantage of present generator, F77/J++, and makes standardization of design because it uses UML and design pattern information. We compare it with present system by implement Eases, and as a result, generator suggested in this study gives more effective function.

A Study on the Building Code Application of Super-tall Building Design (초고층빌딩설계를 위한 건축법규 적용기준에 관한 연구)

  • Hong, Yoon Kee
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.14 no.5
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    • pp.2487-2496
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    • 2013
  • The main objective of this study is to develop the application system of building code in super-tall building design. In order to improve the design company's qualification in the specialized building project such as super-tall, developing the reasonable application of domestic building code system is one of essential factors. This study show the unique environment required in the super-tall design process and compare the regulation system in domestic building code and international building code, mostly US. By analyzing the building codes of Busan Lotte Tower, this study suggest the addition or modification of building code application for the similar super-tall building design projects.

VHDL Code Coverage Checker for IP Design and Verification (IP 설계 환경을 위한 VHDL Code Coverage Checker)

  • 김영수;류광기;배영환;조한진
    • Proceedings of the IEEK Conference
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    • 2001.06b
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    • pp.325-328
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    • 2001
  • This paper describes a VHDL code coverage checker for If design and verification. Applying the verification coverage to IP design is a methodology rapidly gaining popularity. This enables the designers to improve the IP design quality and reduces the time-to-market by providing the Quantitative measure of simulation completeness and test benches. To support this methodology, a VHDL code coverage model was defined and the measurement tool was developed.

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A Real Code Genetic Algorithm for Optimum Design (실수형 Genetic-Algorithm에 의한 최적 설계)

  • 양영순;김기화
    • Computational Structural Engineering
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    • v.8 no.2
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    • pp.123-132
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    • 1995
  • Genetic Algorithms(GA), which are based on the theory of natural evolution, have been evaluated highly for their robust performances. Traditional GA has mostly used binary code for representing design variable. The binary code GA has many difficulties to solve optimization problems with continuous design variables because of its large computer core memory size, inefficiency of its computing time, and its bad performance on local search. In this paper, a real code GA is proposed for dealing with the above problems. So, new crossover and mutation processes of GA are developed to use continuous design variables directly. The results of read code GA are compared with those of binary code GA for several single and multiple objective optimization problems. As a result of comparisons, it is found that the performance of the real code GA is better than that of the binary code GA, and concluded that the real code GA developed here can be used for the general optimization problem.

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Development of High-level Method for Representing Explicit Verb Phrases of Building Code Sentences for the Automated Building Permit System of Korea (서술부의 함수체계화를 통한 인허가관련 건축법규의 자동검토 응용방안)

  • Park, Seokyung;Lee, Jin-Kook;Kim, Inhan
    • Korean Journal of Computational Design and Engineering
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    • v.21 no.3
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    • pp.313-324
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    • 2016
  • As building information modeling (BIM) is expanding its influence in various fields of architecture, engineering, construction and facility management (AEC-FM) industry, BIM-based automated code compliance checking has become possible prospects. For the automated code compliance checking, requirements in building code need to be processed into explicit representation that enables automated reasoning. This paper aims to develop high-level methods that translate verb phrases into explicit representation. The high-level methods represent conditions, properties, and related actions of the building objects and clarify the core content of the constraints. The authors analyze building permit requirements in Korea Building Code and establish a standardized process of deriving the high-level methods. As a result, 60 kinds of the high-level methods were derived. In addition, method classification, analysis, and application are introduced. This study will contribute to the representation of explicit building code sentences and establishment of the automated building permit system of Korea.