• Journal of the Korea Society of Computer and Information
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• v.19 no.9
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• pp.103-115
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• 2014

In this paper, we propose UniBAS(Unified Bug Analysis System) to provide a unified repository model by integrating the extracted data from the heterogeneous bug tracking systems. The UniBAS reduces the cost and complexity of the MSR(Mining Software Repositories) research process and enables the researchers to focus on their logics rather than the tedious and repeated works such as extracting repositories, processing data and building analysis models. Additionally, the system not only extracts the data but also automatically generates database tables, views and stored procedures which are required for the researchers to perform query-based analysis easily. It can also generate various types of exported files for utilizing external analysis tools or managing research data. A case study of detecting duplicate bug reports from the Firfox project of the Mozilla site has been performed based on the UniBAS in order to evaluate the usefulness of the system. The results of the experiments with various algorithms of natural language processing and flexible querying to the automatically extracted data also showed the effectiveness of the proposed system.

• Magazine of the Korea Concrete Institute
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• v.20 no.2
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• pp.54-60
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• 2008

• Digital Contents
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• no.11 s.126
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• pp.144-151
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• 2003

문제점: 하위 수준 D3D 지원_ 버텍스 버퍼를 만들기 위해 코어 Direct3D(D3D)는 하위 수준의 메모리 관리만 지원한다. 버텍스 버퍼 데이터는 void* 포인터를 사용해 액세스 된다. 코어 D3D에서 하위 수준의 지원은 매우 적절하다. D3DX는 전체 메시 클래스로서 포함한 상위 수준도 지원한다. 이 상위 수준과 하위 수준 사이에는 아무 것도 없다. 하위 수준의 버텍스 버퍼(VB)를 사용하기 위해서는 먼저 버텍스데이터 구조를 만들고 크기에 맞는 VB를 만든 후 이를 데이터로 채우고(void* 포인터 배치) 마지막으로 필요한 버텍스 선언을 한다. 애플리케이션 코드는 D3D 없이도 스스로 일관성을 가져야 하며 몇몇 하위 수준 에러가 발생할 수도 있다. 기껏해야 에러는 실행하면서 D3D의 디버그 버전으로 잡아낼 수 있다. 최악의 경우, 애플리케이션 문제를 발생시킬 수 있는데 이럴 경우 종종 디버그가 어려울 수도 있다.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2022.06a
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• pp.186-189
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• 2022

스마트팜 피노믹스 시스템은 재배하는 식물의 성장조건에 맞게 생육 환경을 일정하게 유지하고 관리하는 장치이지만, 그럼에도 불구하고 식물의 질병은 여러 가지 이유로 발생할 수 있다. 본 논문에서는 스마트팜 피노믹스 시스템에서 Mean Shift Segmentation 을 통한 식물의 질병을 자동으로 검출하는 식물 질병 검출 알고리즘을 제안한다. 식물의 질병 정도가 임의의 임계값을 넘을 경우, 해당 식물을 질병의 정도가 심한 식물로 판별하고, 적절한 수확시기를 결정하여 더 나은 상품성을 가진 식물을 재배할 수 있는 방법을 제시한다. 또한 식물의 질병이 급격하게 심해지는 기간을 확인하여 인간의 개입 없이 완전히 자동화된 시스템으로 더욱 세심하고 효율적인 식물 재배를 가능하게 함을 제시한다. 본 논문에서는 아이스버그(양상추)에 대한 재배 환경을 구축하여 생장 기간에 아이스버그에 발생하는 질병인 팁번 현상을 검출하는 실험을 진행하였다. 본 논문에서 제안한 방법은 다른 종류의 다양한 식물에서도 질병 검출이 가능하며, 스마트팜 피노믹스 시스템에서 질병 검출의 자동화를 위한 한 가지 방법으로 활용될 수 있을 것으로 기대된다.

• Journal of the Korea Computer Industry Society
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• v.7 no.4
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• pp.321-328
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• 2006

This thesis is focused on the design and implement the remote control and monitoring system for the effective management of communication equipments on the distributed environment. As a result of this paper, RCMS can effective manage communication base stations by the monitoring and transmission.

• Journal of KIISE:Software and Applications
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• v.37 no.7
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• pp.536-547
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• 2010

Relative importance and complexity of recent software is getting increased because the software is needed to provide considerable amount of functions and high performance. Therefore, developing reliable software is importantly issued. In order to develop reliable software, it is necessary to manage software reliability at the early phases, but most reliability estimation models are used at system or operational test phases. In order to develop highly reliable software, it is necessary to manage software reliability at the early test phases based on characteristic of the phases that is developers and testers are not separated and developers perform test and debug activities together. Therefore, a new reliability estimation model considering test and debug time together is necessarily needed. In this paper, we propose a new reliability estimation model to manage reliability of individual units from the early test phases and in order to show how to fit the model to actual data and usefulness, we collected industrial data and used it for the experiment.

• Journal of the Korean housing association
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• v.12 no.2
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• pp.55-63
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• 2001

The purpose of this study was to develop the community programs of multihousing in Korea through evaluating and analyzing the actual conditions of community in multihousing in U.S.A. This study was conducted by using a field survey and questionaire at the 2 multihousing complexes located in the City of Blacksburg, Virginia, U.S.A. The major findings were as follows: 1) There was a variety of community programs and facilities, such as a monthly newsletter which allowed information to be exchanged among all residents. The programs also provided news on events for the children, teenagers, college students, adults and seniors. These events were held at the club house or pond area. 2) The average degree of satisfaction of these programs and facilities was high. 3) Korea need to follow the example of the U.S.A by i) providing a monthly newsletter periodically to exchange information ii) offering a variety of community programs iii) providing programs regarding district bureau of public administration, kindergarten service, telecommunications office and holding service for package, registered mail, drycleaning, etc.

• Proceedings of the Korean Society of Computer Information Conference
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• 2020.07a
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• pp.389-390
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• 2020

배포된 소프트웨어는 고객의 새로운 요구사항을 반영하면서 기능을 추가하거나 수정한다. 수정된 소프트웨어는 문제없이 동작하지만, 내부의 구조는 점점 더 복잡해지면서 유지보수가 어려워지고, 수정 시 버그 발생 확률이 높아지게 된다. 이에 따라 잘못된 코드 구조를 개선하고, 소프트웨어의 품질을 향상시켜야한다. 본 논문에서는 개발된 ERP 근태관리 시스템이 지속적인 요구사항을 반영하면서 발생한 잘못된 코드 구조인 코드 스멜을 탐지하고 분석하는 연구를 진행하였다.

• Journal of Convergence for Information Technology
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• v.9 no.12
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• pp.157-165
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• 2019

Charles Lindbergh has experienced the uncontrolled situation of the aircraft while he was asleep with open eyes during his Atlantic crossing flight around 20 hours after departure from the New York in 1927 because of the fatigue. According to the NTSB(National Transportation Safety Board) reports, about 40 incidents are related fatigue in each year. The sleep loss is the most wanted item for the NTSB and may cause the similar effect as the alcohol does. The fatigue may affect the management of the threats and errors especially during take-off and landing. In this study, threats and errors of major accidents that NTSB analysed fatigue as a causal factor will be identified in order to understand the seriousness of fatigue.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.37 no.5
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• pp.425-432
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• 2009

In this study, the ability of neural network in modeling and predicting of the unsteady aerodynamic force coefficients of 2D airfoil with the data obtained from Euler CFD code has been confirmed. Neural network models are constructed based on supervised training process using Levenberg-Marquardt algorithm, combining this into genetic algorithm, hybrid genetic algorithm and the efficiency of the two cases are analyzed and compared. It is shown that hybrid-genetic algorithm is more efficient for neural network of complex system and the predicted properties of the unsteady aerodynamic force coefficients of 2D airfoil by the neural network models are confirmed to be similar to that of the numerical results and verified as suitable representing reduced models.