• Title/Summary/Keyword: user modeling

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Evaluating Modified IKONOS RPC Using Pseudo GCP Data Set and Sequential Solution

  • Bang, Ki-In;Jeong, Soo;Kim, Kyung-Ok
    • Proceedings of the KSRS Conference
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    • 2002.10a
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    • pp.82-87
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    • 2002
  • RFM is the sensor model of IKONOS imagery for end-users. IKONOS imagery vendors provide RPC (Rational Polynomial Coefficients), Ration Function Model coefficients for IKONOS, for end-users with imagery. So it is possible that end-users obtain geospatial information in their IKONOS imagery without additional any effort. But there are requirements still fur rigorous 3D positions on RPC user. Provided RPC can not satisfy user and company to generate precision 3D terrain model. In IKONOS imagery, physical sensor modeling is difficult because IKONOS vendors do not provide satellite ephemeris data and abstract sensor modeling requires many GCP well distributed in the whole image as well as other satellite imagery. Therefore RPC modification is better choice. If a few GCP are available, RPC can be modified by method which is introduced in this paper. Study on evaluation modified RPC in IKONOS reports reasonable result. Pseudo GCP generated with vendor's RPC and additional GCP make it possible through sequential solution.

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PREDICTION OF MICROSTRUCTURE EVOLUTION AND HARDNESS DISTRIBUTION IN THE WELD REPAIR OF CARBON STEEL PIPELINE

  • Li, Victor;Kim, Dong
    • Proceedings of the KWS Conference
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    • 2002.10a
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    • pp.205-210
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    • 2002
  • This article presents an integrated modeling approach for coupled analysis of heat transfer and microstructure evolution in welding carbon steel. The modeling procedure utilizes commercial [mite element code ABAQUS/Standard as the platform for solving the equation of heat conduction. User subroutines that implement computational thermodynamics and kinetics models are integrated with the FEA code to compute the transient microstructure evolution. In this study, the integrated models are applied to simulate the hot-tap repair welding of carbon steel pipeline. Microstructural components are treated as user output variables. Based on the predicted microstructure and cooling rates, hardness distributions in the welds were also predicted. The predicted microstructure and hardness distribution were found in good agreement with metallographic examinations and hardness measurements. This study demonstrates the applicability of computational models for the development of welding procedure for in-service pipeline repair.

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Automatic Generation of Analysis Model Using Multi-resolution Modeling Algorithm (다중해상도 알고리즘을 이용한 자동 해석모델 생성)

  • Kim M.C.;Lee K.W.;Kim S.C.
    • Korean Journal of Computational Design and Engineering
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    • v.11 no.3
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    • pp.172-182
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    • 2006
  • This paper presents a method to convert 3D CAD model to an appropriate analysis model using wrap-around, smooth-out and thinning operators that have been originally developed to realize the multi-resolution modeling. Wrap-around and smooth-out operators are used to simplify 3D model, and thinning operator is to reduce the dimension of a target object with simultaneously decomposing the simplified 3D model to 1D or 2D shapes. By using the simplification and dimension-reduction operations in an appropriate way, the user can generate an analysis model that matches specific applications. The advantage of this method is that the user can create optimized analysis models of various simplification levels by selecting appropriate number of detailed features and removing them.

A Study of Structural Analysis for Space Frame on the World Wide Web (인터넷을 통한 스페이스 프레임 구조 해석에 관한 연구)

  • Suk, Chang-Mok;Nam, Sang-Kwan;Park, Sang-Hoon;Jung, Hwan-Mok;Kwon, Young-Hwan
    • Journal of Korean Association for Spatial Structures
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    • v.1 no.1 s.1
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    • pp.135-142
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    • 2001
  • This paper proposes structural analysis on the World Wide Web to form a part of the architectural design project. It purposes modeling space frames and a structural analysis program on the internet only by inputting basic data for forming a shape in the whole phase of space frame analysis. The analysis data is conducted by Oracle DBMS(DataBase Management System), GUI(Graphic User Internet) by Java Applet and connection with server and database by Java Servlet respectively. The result from modeling and analysis is provided as graphic and text file forms by web browsers. Programs can be executed irrespective of user's OS by using internet and highly-secured system is constructed taking advantage of Java. Of great efficiency is maintaining and recycling data as the whole is dealt by database from the beginning to the end of program.

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A Study on 3D Third Party Program for Quick Development of New Product (신속한 신제품 개발을 위한 3D Third Party Program 개발에 관한 연구)

  • 한찬희;이창호
    • Proceedings of the Safety Management and Science Conference
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    • 2003.11a
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    • pp.207-214
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    • 2003
  • 3D Modeling Solution can reduce projecting error and also make possible to design visually, so that it can minimize human resources. On the other hand, it has defects of operating difficulties caused by too much complex function, thus it consequently prevent user from prompt handling. According to this paper, the developed party S/W will help that user can construct the parts easily, can let everybody use 3D modeling solution readily, and make fast development of new product. This software will carry out prompt development of new product and derive satisfaction of customers from high quality. Also, saving time and expense naturally raise competitive power in consequence.

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A Study on the 3-D Geometric Modeler for Safety Assessment of Damaged Ships (손상선박의 안전성평가를 위한 3차원 형상 모델러에 관한 연구)

  • 이동곤;이순섭;박범진
    • Journal of the Society of Naval Architects of Korea
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    • v.40 no.6
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    • pp.30-36
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    • 2003
  • To improve survivability of damaged ship, assessment of stability and structural safety, and behavior analysis in wave is required. Prediction of sinking time, damage stability and structural strength considering progressive flooding and dynamic force in wave is very important. To do it, a geometric model which can be express damaged ship is prepared. This paper described the geometric modeler for survivability assessment of damaged ship. The modeler is developed based on 3-D geometric modeling kernel, ACIS. The hull form and compartment definition is available fundamentally. And requirement for modeler contains data generation and interface for hydrostatic calculation, behavior analysis, and longitudinal strength analysis and so on. To easy access modeling system by conventional user such as crew, user interface is developing.

Human Interface Modeling of Consumer Electronic Products by Using the Object-Oriented Technique (전자제품 휴먼인터페이스의 객체지향적 모델링)

  • Hong, Sang-U;Han, Seong-Ho;Gwak, Ji-Yeong
    • Journal of the Ergonomics Society of Korea
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    • v.17 no.2
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    • pp.83-96
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    • 1998
  • This paper suggests a data modeling scheme of human interface elements and their properties for consumer electronic products. The human interface elements were classified into three categories: individual, interaction and integration interface. The representative properties of each interface element were identified, and modeled by using the object-oriented technique. The results of this study are expected to be used for expressing the user interface of consumer electronic products. They are also expected to help understand the relationship between the usability and the user interface elements of a product.

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An Intelligent Search Modeling using Avatar Agent

  • Kim, Dae Su
    • International Journal of Fuzzy Logic and Intelligent Systems
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    • v.4 no.3
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    • pp.288-291
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    • 2004
  • This paper proposes an intelligent search modeling using avatar agent. This system consists of some modules such as agent interface, agent management, preprocessor, interface machine. Core-Symbol Database and Spell Checker are related to the preprocessor module and Interface Machine is connected with Best Aggregate Designer. Our avatar agent system does the indexing work that converts user's natural language type sentence to the proper words that is suitable for the specific branch information retrieval. Indexing is one of the preprocessing steps that make it possible to guarantee the specialty of user's input and increases the reliability of the result. It references a database that consists of synonym and specific branch dictionary. The resulting symbol after indexing is used for draft search by the internet search engine. The retrieval page position and link information are stored in the database. We experimented our system with the stock market keyword SAMSUNG_SDI, IBM, and SONY and compared the result with that of Altavista and Google search engine. It showed quite excellent results.

Operating Simulation of RPS using DEVS W/S in Web Service Environment

  • Cho, Kyu-Cheol
    • Journal of the Korea Society of Computer and Information
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    • v.21 no.12
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    • pp.107-114
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    • 2016
  • Web system helps high-performance processing for big-data analysis and practical use to make various information using IT resources. The government have started the RPS system in 2012. The system invigorates the electricity production as using renewable energy equipment. The government operates system gathered big-data with various related information system data and the system users are distributed geographically. The companies have to fulfill the system, are available to purchase the REC to other electricity generation company sellers to procure REC for their duty volumes. The REC market operates single auction methods with users a competitive price. But the price have the large variation with various user trading strategy and sellers situations. This papler proposed RPS system modeling and simulation in web environment that is modeled in geographically distributed computing environment for web user with DEVS W/S. Web simulation system base on web service helps to analysis correlation and variables that act on trading price and volume within RPS big-data and the analysis can be forecast REC price.

Visualization of Ocean Environments through VRML (VRML을 이용한 해역환경 가시화 연구)

  • Kim, Jong-Kyu;Park, Sang-Woo;Kim, Jong-Hwa
    • Journal of Fisheries and Marine Sciences Education
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    • v.17 no.3
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    • pp.427-433
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    • 2005
  • The study of Web GUI(Graphic User Information) system for Virtual Reality System is mainly performed on effective methodology which transform real world data to computing world data. MGIS(Marine Geographic Information System) has its own target on reliable data service by acquisition of geometric information using accurate measurement and graphical visualization. This type of raw data visualization can be built without software tools, yet is incredibly useful for interpreting and communicating data. Even simple visualizations can aid in the interpretation of complex 3D relationships that are frequently encountered in the geosciences. The Virtual Reality Modeling Language provides an easy way for geoscientists to construct complex visualizations that can be viewed with free software. This study propose a three dimensional Web GUI system using MGIS-based three dimensional data models and virtual imaging system. Finally, we design a Web GUI system integrating above data models.