• 한국전자거래학회지
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• 제2권1호
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• pp.21-37
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• 1997

As the complexity in design and manufacturing activities of distributed virtual enterprises rapidly increases, the issue of process management becomes more critical to shorten the time-to-market, reduce the manufacturing cost and improve the product quality. This paper proposes a unified framework to manage design and manufacturing processes in a distributed environment. We present a methodology which utilizes process flow graphs to depict the hierarchical structure of workflows and process grammars to represent various design processes and design tools. To implement the proposed concept, we develop a process management system which mainly consists of a cockpit and manager programs, and we finally address a preliminary implementation procedure based on the Object Modeling Technique. Since the proposed framework can be a formal approach to the process management by providing formalism, parallelism, reusability, and flexibility, it can be effectively applied to further application domains of distributed virtual enterprises.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2003년도 ICCAS
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• pp.2151-2154
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• 2003

Internet is deeply rooted in everyday life and many things are performed using internet in real-world, therefore internet users increased because of convenience. Also internet accident is on the increase rapidly. The security vendor developed security system to protect network and system from intruder. Many hackings can be prevented and detected by using these security solutions. However, the new hacking methods and tools that can detour or defeat these solutions have been emerging and even script kids using these methods and tools can easily hack the systems. In consequence, system has gone through various difficulties. So, Necessity of intruder trace-back technology is increased gradually. Trace-back technology is tracing back a malicious hacker to his real location. trace-back technology is largely divided into TCP connection trace-back and IP packet trace-back to trace spoofed IP of form denial-of-service attacks. TCP connection trace-back technology that autonomously traces back the real location of hacker who attacks system using stepping stone at real time. In this paper, We will describe watermark trace-back system using TCP hijacking technique to supplement difficult problem of connection maintenance happened at watermark insertion. Through proposed result, we may search attacker's real location which attempt attack through multiple connection by real time.

• 대한조선학회 특별논문집
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• 대한조선학회 2008년도 특별논문집
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• pp.106-111
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• 2008

A hull form is 181K DWT Bulk Carrier, of which new design and hull form have been developed using CFD tools and model tests. The basic concept design of hull form has been carried out with considering the factors, which are a lot of influence of the wave and viscosity resistance. The considered factors of particular are LCB, DLWL shape, tern and stem profile, Cp-curve shape, etc. Numerical calculations are carried out in the initial design stage and experimental model tests are also carried out in towing tank of MOERI. The variation of the significantly effective characteristics is carried out to achieve optimized hull form. The results from numerical calculations and model test as well as the design procedures to obtain an optimized hull form resent in this paper.

• 복식문화연구
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• 제12권2호
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• pp.300-311
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• 2004

The purpose of this study is to investigate design process and production in the Korean knitwear industry and to examine the possibility for our knitwear industry to develop into the developed countries' model. This purpose was empirically pursued through questionnaires, of which respondents were 110 designers, merchandiser(MD), and top managers of knitwear companies and jobbers in Seoul. The questionnaires were analyzed on the basis of such statistical tools as χ²-test, t-test, and one-way ANOVA. Findings of this study were as follows. Designers of knitwear companies evaluated that their design is more creative than that of designers of jobbers. But designers of knitwear companies and jobbers all responded that they obtained their design ideas from samples produced by leading foreign knitwear companies. The dominant form by which knitwear companies use jobbers was that knitwear companies do a major part of designing and order jobbers to elaborate it and produce knitwear samples. The most important reason of hiring jobbers was to obtain specialized technical skills and knowledge.

• 한국멀티미디어학회논문지
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• 제24권12호
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• pp.1693-1707
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• 2021

The purpose of this study was to improve the experience of visiting obstetrics and gynecology of single women. After analyzing previous studies on Korean single women's perception of visiting obstetrics and gynecology, Contextual Interviews and Cultural Probes were conducted on single women in their 20s who visited obstetrics and gynecology. Based on this, personas were constructed to solidify the direction of problem solving by identifying the behavioral patterns and characteristics of single women. In this study, factors that hinder unmarried women's visits to obstetrics and gynecology and improvement measures were derived based on the information obtained using service design tools such as User Journey Mapping and Stakeholders' Map. Afterwards, a preference survey was conducted to increase the persuasiveness of the proposed method. The follow-up research task is to produce and propose the derived solution as a prototype that can be used in the actual field, and then proceed with user evaluation.

• 한국정보과학회논문지:컴퓨팅의 실제 및 레터
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• 제12권1호
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• pp.1-8
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• 2006

대부분의 CAD 툴 회사들은 고가의 라이센스 정책을 유지하고 있기 때문에, 워킹 또는 연구 그룹에서는 제한된 수의 라이센스를 다른 설계자들과 공유하여 사용하고 있다. 설계자의 입장에서 볼 때, CAD 툴 라이센스 자원은 매우 귀중한 자원이므로, 이와 관련된 자원을 효율적으로 공유하고 사용하는 것이 중요하다. 디자인 워킹 그룹에서 설계자가 CAD 툴을 사용하기 위해서는 현재 속한 그룹에서 사용할 수 있는 CAD 툴 라이센스의 종류, 개수 및 설정 방법을 알아야 하며, 이 정보는 해당 그룹에 속한 관리자를 통해 얻는다. 기존의 CAD 툴 라이센스 공유 방법은 설계자가 CAD 툴 라이센스에 대한 정보를 획득하는 과정이 관리자와의 수작업을 통한 통신으로 이루어 졌으며, 해당 정보를 획득 한 후에는 설계자가 직접 환경 설정을 해야 한다. 이와 같은 환경에서는 새로운 설계자가 특정 그룹에 들어왔을 때, 정보를 얻기 위한 통신과 설정 과정으로 인해 불필요한 설계시간을 소모하게 되어 결국 생산성 및 CAD 툴의 이용률을 저하시킨다. 또한, 관리자의 입장에서도 모든 설계자들에게 CAD 툴 라이센스에 대한 정보를 제공하기 위해서는 많은 시간을 소비하게 된다. 본 논문에서는 CAD 툴 라이센스를 자동화된 방법으로 공유하기 위해 디렉토리 서비스에 기반을 둔 방법을 제안한다. 새롭게 제안된 방법은 사용자와 관리자의 사이의 통신부분과 사용자에 의해 수동으로 진행되던 라이센스 환경설정 부분을 자동화함으로써, 관리자 및 설계자의 노력 및 시간비용을 감소시키고, 설계의 생산성 및 CAD 툴 이용률을 높인다.

• ETRI Journal
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• 제38권5호
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• pp.818-828
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• 2016

This paper proposes a reusable design for the merging process used in three-dimensional High Efficiency Video Coding (3D-HEVC), which can significantly reduce the implementation complexity by eliminating duplicated module redundancies. The majority of inter-prediction coding tools used in 3D-HEVC are utilized through a merge mode, whose extended merging process is based on built-in integration to completely wrap around the HEVC merging process. Consequently, the implementation complexity is unavoidably very high. To facilitate easy market implementation, the design of a legacy codec should be reused in an extended codec if possible. The proposed 3D-HEVC merging process is divided into the base merging process of reusing HEVC modules and reprocessing process of refining the existing processes that have been newly introduced or modified for 3D-HEVC. To create a reusable design, the causal and mutual dependencies between the newly added modules for 3D-HEVC and the reused HEVC modules are eliminated, and the ineffective methods are simplified. In an application of the proposed reusable design, the duplicated reimplementation of HEVC modules, which account for 50.7% of the 3D-HEVC merging process, can be eliminated while maintaining the same coding efficiency. The proposed method has been adopted as a normative coding tool in the 3D-HEVC international standard.

• 한국멀티미디어학회논문지
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• 제12권12호
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• pp.1787-1795
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• 2009

This paper describes an automation of architectural design processes and the direction between this automation and robotic system in building construction using the concept of the object-oriented design in architecture. The research starts from the premise that many computer-aided design systems are mostly aimed at serving as drawing tools which are used only after a design formal solution has already been established by the architect. If the computer is well applied to the architectural design process, many positive things such as standardization of design detail, increasing productivity and collaboration, minimizing construction costs etc. can be done. To support an early design solution in the computer-based environment, the proposed automation was developed and tested in a real building project, using the object-oriented design concept such as product model. This design automation gives various design alternatives from the early design phase to the final stage of design details, according to musical harmony. This paper shows how architectural design process can be automated and how the data of the applied architectural design can be integrated into product model environment, in relation to robotic system in building construction.

• 교육시설 논문지
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• 제19권6호
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• pp.15-23
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• 2012

Two government affiliated research institutes, EDUMAC and AURI, are developing some tools for an user participating design process in public recently. The tools are originated from DQI/DQIfS, launched in 2002 by CIC(Construction Industry Council) in U.K.. At the beginning DQI/DQIfS was not a tool for making a decision but for a communication between layman and experts of architectural process. Because of this intent the most crucial thing is not DQI/DQIfS itself but how to use the tool: CIC is trying to develop various ways of facilitation. Domestic situation is no exception. Without a proper tool there were an independent user participating process in 2001 and it must have been the first participating process in architectural discourse. Through the seven workshops, the users of Namhansan elementary school drew not only the vision of the school but also concrete requirements which have been continuously adopted so far. The aims of this paper to analyse two facilitation processes: DQI/DQIfS in U.K. and the case of Namhansan process. Even not a proper tools for the process there was a spontaneous facilitation in Namhansan process. When we make a comparison between the Namhansan process and the DQI/DQIfS process there are considerable similarities in terms not only of the process itself but also the results. It shows that there are possibilities to make a Korean facilitation in a user participating process and this study must be the first step.

• 한국정밀공학회지
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• 제26권6호
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• pp.68-73
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• 2009

One of the traditional optical methods to monitor a tool is a CCD sensor-based vision system which captures an aspect of the tool in real time. In the case using the CCD sensor, specific lens-modules are necessary to monitor the tool with higher resolution than its pixel size, and a microprocessor is required to attain desired data from captured images. Thus theses additional devices make the entire measurement system complex. Another method is to use a pair of an optical source and a detector per measuring axis. Since the method is based on the intensity modulation, the structure of the measurement system is simper than the CCD sensor-based vision system. However, in the case measuring the three dimensional position of the tool, it is difficult to apply to micro machine-tools because there may not be space to integrate three pairs of an optical source and a detector. In this paper, in order to develop a tool-origin measurement system which is employed in micro machine-tools, the improved method to measure a tool origin in x, y and z axes is introduced. The method is based on the intensity modulation and employs one pair of an optical source radiating divergent beams and a quadrant photodiode to detect a three dimensional position of the tool. This paper presents the measurement models of the proposed tool-origin sensor. The models were verified experimentally The verification results show that the proposed method is possible and the induced models are available for design.