• Proceedings of the Korea Information Processing Society Conference
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• 2009.04a
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• pp.448-451
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• 2009

최근 모바일 디바이스의 성능향상으로 모바일 웹 애플리케이션 구동환경이 개선되고 있다. 이에 따라 모바일 웹 애플리케이션 개발 수요가 국내외적으로 증가하고 있다. 하지만 기존 PC환경과 달리 개발 환경 및 표준에 대한 고려가 적어 많은 개발비용이 소모되고 있다. 본 논문에서는 MWeb-프레임워크를 통해 최근 각광 받고 있는 웹 개발 프레임워크 기반의 개발방법론을 제안하며 이와 더불어 다양한 디바이스에서 동일한 사용이 가능하도록 모바일 웹 표준을 준수하는 개발방법론을 제안한다. Ruby on Rails기반의 모바일 웹 개발 아키텍처를 정의하고 이를 바탕으로 모바일 웹 표준을 준수하는 애자일 개발방법론을 적용한 프로세스 모델을 제안하고 기존 웹 개발 프레임워크와 개발방법론을 비교, 평가한다. 제안한 프레임워크를 통하여 신속한 개발을 수행할 수 있으며 모바일 웹 표준 환경을 준수하여 모바일 웹 애플리케이션의 품질과 신뢰성을 획득할 수 있다.

• The Journal of Korea Institute of Information, Electronics, and Communication Technology
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• v.16 no.5
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• pp.325-330
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• 2023

This paper proposes to apply machine learning to the process of predicting the slab thickness based on the structural analysis results or experience and subjectivity of engineers in the design of bridge data construction to enable digital-based decision-making. This study aims to build a reliable design environment by utilizing machine learning techniques to provide guide values to engineers in addition to structural analysis for slab thickness selection. Based on girder bridges, which account for the largest proportion of bridge data, a prediction model process for predicting slab thickness among superstructures was defined. Various machine learning models (Linear Regress, Decision Tree, Random Forest, and Muliti-layer Perceptron) were competed for each process to produce the prediction value for each process, and the optimal model was derived. Through this study, the applicability of machine learning techniques was confirmed in areas where slab thickness was predicted only through existing structural analysis, and an accuracy of 95.4% was also obtained. models can be utilized in a more reliable construction environment if the accuracy of the prediction model is improved by expanding the process

• The KIPS Transactions:PartD
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• v.8D no.6
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• pp.715-722
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• 2001

In recent years, we recognize a new paradigm in the development process：From object oriented development, to the development process which has focused on the use of standard components. In recent years a lot of research related to the component-based development has been done, especially in business domain. but still there are many open and unresolved problems in this area. such as established development process for a distributed environment, formal process, infrastructure for COTS, development and management tool considering maintenance to guarantee a proper treatment of components. It also required a service and an application integration for component. In this paper, we propose cooperative information systems (CIS) that supports component based development. It must address for component based systems to achieve their full potential. We identify a set of CIS organized 3-tier which is a presentation layer, business logic layer and data control layer. We also discuss the specific roles and activities for the layers. we also define the behavior and managed information for business logic layer as core level. As an illustration of the CIS, we present a successful considerations which is widely helpful to user when they make decision in component development and assemble. Also, we expect to component reusability and efficiency in business domain.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2006.05a
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• pp.1290-1298
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• 2006

오늘날 B2B 전자상거래의 폭발적인 성장과 더불어 SCM상에서 e-Procurement의 중요성이 부각되고 있다. 그 중에서 다수의 구매자와 공급자가 참여하여 다양한 형태의 상거래를 수행하는 3자 관리 모델은 점차 시장이 확대되어 e-Procurement의 핵심요소로 여겨지고 있다. 하지만 현재의 e-Procurement의 3자 관리 모델은 방대한 제품 정보 중에서 구매자가 원하는 제품을 정확히 검색할 수 있는 기능이 미비하고 구매 물량에 따른 할인 가격과 공급자의 배송 정책을 고려한 납기일을 실시간으로 구매자에게 제공해 줄 수 있는 기능이 미흡한 실정이다. 또한 구매 프로세스의 주요 기능인 공급자의 선택에 있어 공급자에 대한 신뢰성이 결여되어 구매자의 비즈니스 요구사항을 채워주지 못하고 있다. 본 연구에서는 이러한 e-Procurement의 3자 관리 모델의 문제점을 해결하고 발전시키기 위해 (1)구매자의 제품 검색 시 시맨틱 웹을 이용한 카테고리 기반 검색 기법과 (2)비즈니스 룰과 웹서비스 기반으로 공급자의 가격 정책, 배송 정책에 따른 납기일을 고려한 검색, (3)구매자와 공급자의 단일 거래에 대한 서비스 품질을 측정하여 구매자에게 공급자의 신뢰성을 보장하는 제품 추천 e-Procurement 시스템을 제안한다.

• Journal of the Society of Naval Architects of Korea
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• v.55 no.3
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• pp.222-235
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• 2018

The hydrocarbon gas leak in the offshore plant can cause large accidents and lead to significant damages to human, property and environment. For prevention of fire or explosion accidents from gas leak, a SIS(Safety Instrumented System) should be installed. In the early stage of the offshore design, required SIL(Safety Integrated Level) is determined and reliability analysis is performed to verify the design in reliability aspects. This study collected data, information related to reliability analysis and created knowledge model of safety design for the offshore system with MBSE(Model-Based Systems Engineering) concept. Knowledge model could support safety engineer's design tasks as the guidance of reliability analysis procedure of safety design and make good conversation with other engineers in yard, class, company, etc.

• Journal of the Institute of Convergence Signal Processing
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• v.25 no.1
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• pp.15-20
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• 2024

In the field of ship inspection in South Korea, due to outdated workflow processes, there is a possibility of tampering with inspection results. Accordingly, research is being conducted to prevent tampering with inspection results by introducing blockchain technology and cloud-based systems that allow real-time tracking and sharing of data, and to establish a transparent and efficient communication system. In this study, unit and integrated processes for overall data management and inspection execution related to ship inspection were implemented to automatically collect, manage, and track various inspection results occurring during the ship inspection process. Through this, it aimed to increase the efficiency of the ship inspection process overall, inducing growth in the ship inspection industry as a whole. The implemented web portal reached a level where trend analysis and comparative analysis with other ships based on inspection results are possible, and subsequent research aims to demonstrate the excellence of the system.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.4
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• pp.479-488
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• 2019

The flight test operational procedure artifact includes mission planning, execution methods, and safety measures for each step of test progress. As the development of guided missiles has become more advanced and strategic, flight test has become increasingly complex and broadened. Therefore, increased reliability of the flight test operation procedures was required to ensure test safety. Particularly, the design of the flight test operational procedures required verification through M&S to predict and prepare for the uncertainty in a new test. The relevant studies have published the optimal framework development for flight tests and the model-based improvements of flight test processes, but they lacked the specificity to be applied directly to the flight test operational procedures. In addition, the flight test operational procedures, which consist of document bases, have caused problems such as limitations of analysis capabilities, insensitive expressions, and lack of scalability for the behavior and performance analysis of test resources. To improve these problems, this paper proposes how to design operational procedure of guided missile flight test system by applying MBSE(Model-based Systems Engineering). This research has improved reliability by increasing the ability to analyze the behavior and performance of test resources, and increased efficiency with the scalability applicable to multiple flight tests. That can be also used continuously for the guided missile flight tests that will be developed in the future.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.7
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• pp.319-325
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• 2016

A variety of services for mobile payments by the activation of FinTech have been developed. Various payment methods were developed, and an authentication method was developed to improve the reliability of the payment. On the other hand, when mobile easy payment services are used, they have weak security because the authentication by phone number. Therefore, this paper proposes a technique for increasing the reliability of the authentication process using the unique device ID of the mobile device to improve the authentication process based on the telephone number. The core research contents are the architecture and process for the authentication of mobile payments based on the mobile device ID. The mobile payment architecture consists of a mobile device, authentication service, and mobile payment application. The mobile device consists of mobile device ID and phone number, and the authentication server consists of authentication module and encryption module. The mobile payment service consists of a pre-authentication module and decryption module. The process of mobile payment service is processed by the encrypted authentication information (device ID, phone number, and authentication number) among mobile devices, authentication server, and mobile payment application. The mobile device sends the telephone number and the device ID to the authentication server and the authentication server authenticates the user through an authentication process and encryption process. The mobile payment application performs the pre-authentication process by decrypting the received authentication number. This paper reports a difference that can prevent the risk of leakage of the authentication number in existing payment services through the authentication process of the authentication server and the pre-authentication process of the mobile payment service of this paper.

• Journal of the Korean Geotechnical Society
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• v.23 no.3
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• pp.111-121
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• 2007

The paper presents a reliability-based method that can capture the impact of uncertainty of seismic loadings. The proposed method incorporates probabilistic concepts into the classical limit equilibrium and the Newmark-type deformation techniques. The risk of damage is then computed by Monte Carlo simulation. Random process and RMS hazard method are introduced to produce seismic motions and also to use them in the seismic slope analyses. The geotechnical variability and sampling errors are also considered. The results of reliability analyses indicate that in a highly seismically active region, characterization of earthquake hazard is the more critical factor, and characterization of soil properties has a relatively small effect on the computed risk of slope failure and excessive slope deformations. The results can be applicable to both circular and non-circular slip surface failure modes.

• Proceedings of the Korea Multimedia Society Conference
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• 2001.11a
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• pp.210-214
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• 2001

PCB관련 제품의 최종 제작단계에서 defect 검사 과정은 제품의 질을 유지하기 위해 필수적인 단계이다. PCB 자동화 검사 시스템은 사람에 의해 이루어지는 품질검사에서 발견되는 비용을 절감하고, 신뢰성있는 제작 프로세스를 유지하기 위해 적극적으로 개발되고 있다. 이 논문에서는 PCB 필름의 defect를 검사하기 위하여 적응적 템플렛 기반 검사 방법을 제시하고자 한다. 고정된 템플릿은 구현하기 편리하고 속도면에서 이점을 발휘할 수 있으나, 강력한 센서의 선택에 제약이 있을 환경 하에서 100%에 근접하는 오류검출률 defect detection rate이 요구되는 고정된 템플릿을 제작하는 것에 문제가 있을 수 있다. 여기서는 템플릿 모델에 유연성을 부여하기 위하여 템플릿의 이미지를 목표 이미지들의 상태에 따라 템플릿을 적응적으로 구축하여 검사과정에 동적으로 적용하는 기법을 개발하고자 한다.