• Title/Summary/Keyword: Digital Architecture

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Construction of Scheduling Support System for Panel Lines by Digital Manufacturing Simulation (디지털 생산 시뮬레이션 기반의 판넬라인 일정계획지원 시스템 구축)

  • Lee, Kwang-Kook;Choi, Dong-Hwan;Han, Sang-Dong;Park, Ju-Young;Shin, Jong-Gye
    • Journal of the Society of Naval Architects of Korea
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    • v.43 no.2 s.146
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    • pp.228-235
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    • 2006
  • Nowadays, digital manufacturing has been known to be very effective method in manufacturing fields. It is aimed to estimate process time, to improve operation efficiency, and to prevent bottleneck processes in advance of real manufacturing. This paper addresses a scheduling support system for panel hues in a shipyard through digital manufacturing simulation. The proposed system supports operators to make better decisions on the shop-floor scheduling in panel lines. It ,would provide a complete schedule that is at least as good as any schedule currently obtained. Furthermore, it can evaluate the operator's schedule by simulating it with 3-dimensional models before the work orders and schedules are released.

A Study on the Parametric Design Process for Form Generation to Review Planning Factors of Irregular-Shaped High-rise Buildings (비정형 초고층건물의 계획요소 검토가 가능한 형태생성 파라메트릭 디자인 프로세스에 관한 연구)

  • Im, Ja-Eun;Park, Sang-Min
    • Journal of the Regional Association of Architectural Institute of Korea
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    • v.21 no.5
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    • pp.161-168
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    • 2019
  • The use of various digital tools makes freeform modeling possible. At the same time, with the development of structural and construction technologies, Free-Form Architecture are beginning to be implemented realized, as the desired data extraction such as the size and coordinate points of the members is possible. Currently, in many cities around the world, Irregular-Shaped High-rise Buildings, which express the dynamic symbolism, are recognized for their landmark values. In order to realize the Irregular-Shaped High-rise Buildings, it is necessary to understand various fields such as the characteristics of digital tools, digital technique logic, design process, and construction method. In particular, it is important to plan Irregular-Shaped High-rise Buildings so that the various types of efficiency can be reviewed together, while generating understanding and formations from the initial design stage. Therefore, this study uses conceptual and parametric design tools related to form generation in digital architecture to analyze the details, methods, and characteristics of the Irregular-Shaped High-rise Buildings form generation process. In this paper, the parametric design tool is applied to study the various types of design and the process characteristics that can be considered in the initial design stage of the unstructured skyscraper.

Hierarchical Constructions of Digital Virtual Factory and its Management (디지털 가상공장의 계층적 구축과 운영에 관한 연구)

  • Kim Yu-Seok;Noh Sang-Do;Hah Sang-Dong;Shin Jong-Gye
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2005.06a
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    • pp.960-964
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    • 2005
  • Digital Virtual Manufacturing is a technology to facilitate effective product developments and agile productions by digital models representing the physical and logical schema and the behavior of real manufacturing systems including products, process, manufacturing resources and plants. A digital virtual factory as a well-designed and integrated environment is essential for successful applications of this technology. In this research, we constructed a sophisticated digital virtual factory of the shipbuilding company's section steel shop by 3-D CAD and virtual manufacturing simulation. This digital virtual factory can be applied for diverse engineering activities in design, manufacturing and control of the real factory.

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A 145μW, 87dB SNR, Low Power 3rd order Sigma-Delta Modulator with Op-amp Sharing (연산증폭기 공유 기법을 이용한 145μW, 87dB SNR을 갖는 저전력 3차 Sigma-Delta 변조기)

  • Kim, Jae-Bung;Kim, Ha-Chul;Cho, Seong-Ik
    • Journal of IKEEE
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    • v.19 no.1
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    • pp.87-93
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    • 2015
  • In this paper, a $145{\mu}W$, 87dB SNR, Low power 3rd order Sigma-Delta Modulator with Op-amp sharing is proposed. Conventional architecture with analog path and digital path is improved by adding a delayed feed -forward path for disadvantages that coefficient value of the first integrator is small. Proposed architecture has a larger coefficient value of the first integrator to remove the digital path. Power consumption of proposed architecture using op-amp sharing is lower than conventional architecture. Simulation results for the proposed SDM designed in $0.18{\mu}m$ CMOS technology with power supply voltage 1.8V, signal bandwidth 20KHz and sampling frequency 2.8224MHz shows SNR(Signal to Noise Ratio) of 87dB, the power consumption of $145{\mu}W$.

A Study on the Student Surveys for CAAD(Computer Aided Architectural Design) (건축 CAD 과목에 대한 학생 설문평가에 관한 연구)

  • Nam, Yun-Cheol
    • Journal of The Korean Digital Architecture Interior Association
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    • v.12 no.4
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    • pp.117-124
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    • 2012
  • The importance of the digital architecture is increasing more ever. Currently, CAD and 3D programs are used as design fields, but the BIM (building information modeling) is gradually interested. BIM is mandatory on the project more than 50 billion won ordered by the government since 2012, it will be expanded to a total of government orders by 2016. University needs to evaluate teaching methods and computer-aided design environments such as CAD and BIM. In this paper, we surveyed computer-aided design environments and teaching methods for 73 students at the J University of Department of architectural engineering. Main results are as follows: 1. Hardlock is uncomfortable but necessary program for the computer management. 2. The desk placement considering the behavior of the design students results in higher satisfaction. 3. Because a CAD subject was a difficult course content and progress is fast, students thought it is difficult to follow. Especially, first-year students answered it is difficult to learn program and understand the structure of the building at the same time. 4. First-year students want to learn CAD more. Second-, third-, fourth-year students want to learn Photoshop more. Supplement for these classes is required. 5. Students answered that a teaching method of a CAD subject would be good to their own practice after the professor demonstrates for students. The senior's assistance is also a high effective way in the class. 6. During class, students' activities such surfing the web and Kakao Talk on a smartphone disrupt the class, there is a need to regulate by a rule such as disconnect computers from a network and against using smartphone. Although the Internet with the popularization of smartphones confers a benefit on modern life, it causes damage to us. This is a hard part for a salaried workers as well as students studying equally. The self management is required and a professor needs to control and restraint in a university classroom. The professor's continuing interest to students can increase the effectiveness of learning.

A Study of Semantic Web Based Open Digital Library Model (시멘틱 웹 기반 개방형 전자도서관 모델에 관한 연구)

  • 황상규
    • Journal of the Korean Society for information Management
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    • v.21 no.1
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    • pp.187-207
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    • 2004
  • Recently there has been a growing interest in the investigation and development of the next generation web - the Semantic Web. From the perspective of a information science, the next generation web - Semantic Web is a metadata initiative. It is reason that one of important stage of Semantic Web Construction is adding formal metadata that describes a Web resource's content and so people can find easy material using metadata. In this paper, 1 designed new application profile metadata architecture as a way to serve as interoperability between various open digital libraries using different information architecture in Semantic Web environment. Based on new application profile metadata architecture, 1 developed union metadata automatic generation and union search algorithm to integrate heterogeneous huge-scale metadata in the open digital library.

Study of Document Distribution System Architecture for Digital Secret Document Leakage Prevention (전자기밀문서 유출봉쇄 유통시스템 구조 연구)

  • Choi, Cheong-Hyeon
    • Journal of Internet Computing and Services
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    • v.11 no.4
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    • pp.143-158
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    • 2010
  • The illegal leakage of enterprise digital confidential information will threaten the enterprise with bankruptcy. Today since most small-and-medium companies have no capability to fight against illegally compromising their critically confidential documents in spite of knowing the leakage of them, strongly safe distribution system of the digital confidential documents should be designed so in secure as to prevent any malicious intent of embezzlement from accessing the critical information. Current DRM-based protection system is not always perfect to protect the digital secrets, even seems to leave the secrets open. Therefore our study has analyzed the illegal leakage paths that hackers attack against and the vulnerability of the current protection systems. As result, we study the group communication based system architecture satisfying the security conditions to make even legitimate working employee keep out of the confidential documents, without performance degradation. The main idea of this architecture is to stay every secrets in encrypted form; to isolate the encrypted documents from the crypto-key; to associate every entity with one activity and to authenticate every entity with DSA-based public key system; multiple authentication method make hackers too busy to get a privilege to access the secrets with too many puzzle pieces. This paper deal with the basic architectural structure for the above issues.

The Web based Digital Archive for CT (CT를 위한 웹기반 디지털 아카이브)

  • Lee, Seung-Joo;Hwang, Ki-Hwan
    • The Journal of Information Technology
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    • v.12 no.1
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    • pp.29-34
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    • 2009
  • Culture contents are in our life with various parts. There are much try and research managing and keeping the culture contents with growing of information technique. Digital archive was proposed the technique that is able to distribute and manage the contents. This paper proposed the web based digital archive for culture contents. Each of archive were sorted art, architecture, science technology and etc, and made the structure that can total manage.

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Design and Implementation of Variable-Rate QPSK Demodulator from Data Flow Representation

  • Lee, Seung-Jun
    • Journal of Electrical Engineering and information Science
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    • v.3 no.2
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    • pp.139-144
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    • 1998
  • This paper describes the design of a variable rate QPSK demodulator for digital satellite TV system. This true variable-rate demodulator employs a unique architecture to realize an all digital synchronization and detection algorithm. Data-flow based design approach enabled a seamless transition from high level design optimization to physical layout. The demodulator has been integrated with Viterbi decoder, de-interleaver, and Ree-Solomon decoder to make a single chip Digital Video Broadcast (DVB) receiver. The receiver IC has been fabricated with a 0.5mm CMOS TLM process and proved fully functional in a real-world set-up.

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