• 산업공학
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• 제16권spc호
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• pp.138-143
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• 2003

In this paper, an automated design system for ball-joint parts based on 3-D solid modeler is developed. Parametric modeling and API provided by 3-D solid modeler is engaged to develope the system which consists of four main modules such as : 3-D part modeling, parts assembling, 2-D drafting, and database interfacing modules. The automated design system is implemented on a computer, and shows us that it shorten the design processing time which have taken over 5 hours to only few minutes.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2008년도 정기학술발표대회 논문집
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• pp.744-747
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• 2008

설계도면을 중심으로 산출되는 물량정보는 건설 프로젝트 생애주기 동안에 프로젝트 참여주체들에게 비용과 관련한 의사결정에 결정적인 역할을 하는 매우 중요한 정보이다. 이러한 정보를 생성하는 물량산출 업무가 수작업에 많이 의존하다보니 작업자의 실수에 의한 오류가 빈번하게 발생하고, 견적담당자의 노하우에 따라 물량의 차이가 존재하기도 한다. 또한, 설계변경에 의해서 물량산출을 위한 재작업에 들어가게 될 경우 모든 물량산출 프로세스를 다시 거쳐야 하는 문제가 있다. 이러한 제반 문제는 견적자동화를 통해 물량산출의 정확성 확보 및 설계변경 시 요구되는 물량산출의 대응력에 대한 요구를 증대시키고 있으며, 최근 3D CAD Modeler에서 생성된 3D CAD 모델을 기반으로 견적업무프로세스를 자동화하려는 연구가 다양한 관점에서 시도되고 있다. 그러나 기존 연구에서는 특정 3D CAD Modeler를 중심으로 한 견적자동화에 대한 연구로 다양한 3D CAD Modeler에서 생성된 3D CAD 모델로부터 물량정보를 취득하기 위한 공통체계 구축하고 이를 기반으로 BIM기반 견적자동화를 이루는 데 한계를 가지고 있다. 따라서 본 연구에서는 이러한 BIM기반 견적자동화 체계구축을 위한 기반 연구로 다양한 3D CAD Modeler로부터 물량산출을 자동화하기 위해 Modeler가 내부적으로 가지고 있는 Quantity Data Type을 추출하고, 이를 분석 및 검증할 수 있는 체계를 개발하였다.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 1997년도 추계학술대회 논문집
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• pp.141-144
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• 1997

This paper presents design automation system using API and parametric modeling of solid modeler, which is applied on axial fans for cooling towers. The design data including chord length and twist angle according to the fan length are given by design program, and API functions are applied to automate the modeling and assembly process of fan blade. The boss to connect fan and motor is designed with parametric design function provided by UG so as to be flexibly changed by the value of design parameters. The process of generating 2-D drafting for parts and an assembly is also automated. With developed system, the modeling time is reduced to 5 minutes even with unskilled operators.

• 한국공작기계학회:학술대회논문집
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• 한국공작기계학회 2002년도 춘계학술대회 논문집
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• pp.352-356
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• 2002

In this paper, an automated design system of suspension and steering parts is developed. The system automates the processes of 3-D modeling and 2-D drafting of the parts. In addition, the BOM and dimension data of the designed part is also automatically transferred to the database of ERP system. The system is developed by using the functions of parametric design and API(application Programming Interface) of the a commercial solid modeler.

• International Journal of Control, Automation, and Systems
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• 제4권1호
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• pp.63-69
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• 2006

Problems like poor security, transfer delay or packet loss occur while building network systems that are applied with TCP/TP integrate with data network systems. To solve this problem, this paper proposes the Separated Ethernet, which can give priority to the system, and by using the OPNET Modeler simulator, we will verify its performances.

• 대한조선학회논문집
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• 제30권3호
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• pp.90-99
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• 1993

선체 구조해석에서 유한요소의 활용에 따라 3차원적인 모델이 필요하게 되었으나 선체구조는 매우 복잡하고 주문생산에 따른 선체규격의 상이함에 의해 유한요소 모델링에 어려움이 많다고 할 수 있다. 유한요소 소프트웨어에서 제공하는 pre-processor나 geometric modeler를 활용하여 모델링을 짧은 시간내 편리하게 하기 위해서는 DB에 저장된 설계 데이타로 부터 요소형성에 긴요한 데이타들을 추출하여 사용할 필요가 있게 된다. 본문에는 engineering database의 부분적인 구현 예로서, 설계-해석 자동화의 한 분야인 유한요소 모델링에 필요한 내용들이 설계 데이터로 부터 추출되어 관계형 데이타 테이블로 정형화되는 과정이 개념적으로 나타나 있다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2015년도 제46회 하계학술대회
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• pp.47-48
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• 2015

As the power system develops rapidly into a smarter and more flexible state, so must the communication technologies that support it. Machine to machine (M2M) communication in Smart Grid environment has been discussed in European Telecommunications Standards Institute (ETSI). The power system is not easily replaceable, due to system replacement cost. The M2M gateway is required in other to improve interoperability in M2M environment. The Distributed Network Protocol 3.0 (DNP3.0) is the most important standard in the SCADA systems for the power. It has been used for device data collection/control in Substation Systems, Distribution Automation System. If the DNP3.0 data model is combined with a set of contemporary web protocols, it can result in a major shift. We selected Constrained Application Protocol (CoAP) based on RESTful as M2M protocol. It is a specialized web transfer protocol for use with constrained nodes and constrained networks. We have used the OPNET Modeler 17.1 in order to verity the SOAP versus CoAP. In this paper, we propose the CoAP-based M2M Gateway to Distribution Automation system using DNP3.0 in Smart Grid Environment.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2005년도 춘계학술대회 논문집
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• pp.718-723
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• 2005

In this paper, we propose the collaborative design system with which we can simultaneously modify the actual 3D CAD model by the remote control and have interaction on it. It enables instantaneous decision making among the multiple disciplines in distributed locations using the function of simultaneous access and video conference. It also provides the method of managing the consistency between design entities. This system consists of Collaborative Management Server, File Server, Solid Modeler Client, Remote Control Module and Client Module.

• Journal of Information Technology Applications and Management
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• 제16권4호
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• pp.263-283
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• 2009

Although some CASE tools supported conceptual data design, they required for users too much preliminary knowledge to learn how to use and handle them. In addition, in a number of studies on conceptual data design with natural language, they claimed passive participation for users with conforming to messages predefined by CASE tools. As an alternative to these traditional CASE tools, we proposed an ERD formulator for automated data design tool, called ERDF, so that even ordinary users, not necessarily data modeler, are capable of formulating ERD on business requirements by use of ERDF. We, first of all, introduced NSM as the standard methodology. We also designed the structure of ERDF including main controller, input controller, operation controller, regulation controller, schema controller, and output controller. We then defined conceptual domains and basic operations to lay down schema operations as well as sentence rules to handle input sentence in natural language. To get an ERD that is faithful to business requirements, we laid out supplementary design for dialogue and confirmation of soundness and completion.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제1권1호
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• pp.33-51
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• 2007

There are two newly emerging research issues in the enterprise information systems literature. One is the scalability issue for rapidly increasing choreographic volumes between interrelated organizations. The other is the business intelligence issue for traceable and monitorable business processes and services interchanging e-Business data and applications across organizations. Based upon these emerging issues, through a functional extension of the ebXML technology we have developed a process-driven e- Business service integration (BSI) system, which is named ‘e-Lollapalooza’. It consists of three major components ? the Choreography Modeler coping with the processdriven collaboration issue, the Runtime & Monitoring Client for coping with the business intelligence issue and the EJB-based BSI Engine coping with the scalability issue. This paper particularly focuses on the e-Lollapalooza’s development aspects for supporting the ebXML-based choreography and orchestration among the engaged organizations in a process-driven multiparty collaboration for e-Logistics and e- Commerce services. Here, it is fully deployed in an EJB-based middleware computing environment for e-Logistics process automation and B2B choreography.