• Proceedings of the Korean Society of Machine Tool Engineers Conference
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• 2005.05a
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• pp.91-96
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• 2005

In this study, researchers developed the estimative algorithm for artificial defects in semiconductor packages and performed it by pattern recognition technology. For this purpose, the estimative algorithm was included that researchers made software with MATLAB. The software consists of some procedures including ultrasonic image acquisition, equalization filtering, Self-Organizing Map and Backpropagation Neural Network. Self-Organizing Map and Backpropagation Neural Network are belong to methods of Neural Networks. And the pattern recognition technology has applied to classify three kinds of detective patterns in semiconductor packages: Crack, Delamination and Normal. According to the results, we were confirmed that estimative algorithm was provided the recognition rates of $75.7\%$ (for Crack) and $83_4\%$ (for Delamination) and $87.2\%$ (for Normal).

• 제어로봇시스템학회:학술대회논문집
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• 1998.10a
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• pp.147-150
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• 1998

The report presents basic functions of Time-delay System Toolbox (for MATLAB) -the general-purpose software package for Computer Aided Design of control systems with delays. The Toolbox is a collection of algorithms, expressed mostly in m-files for simulating and analysis of MIMO linear and nonlinear systems with discrete and distributed (time-varying) delays.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.13 no.3
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• pp.445-450
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• 2009

One method to improve quality before releasing of S/W after development is to enhance the reliability, whose direct methodology is to detect and revise fault through testing. Once the S/W is released because it meets the target reliability, the operational reliability problem arises. It is obvious the operational reliability different from that of testing stage depending on the condition whether it is universal(package) S/W or dedicated S/W. I propose the methodology to calculate operational software reliability of universal and dedicated S/W in this paper.

• Proceedings of the Korea Information Processing Society Conference
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• 2001.10a
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• pp.375-378
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• 2001

패키지 소프트웨어의 품질시험을 통해 패키지 소프트웨어 구매자들의 요구에 부합되는 소프트웨어를 선택할 수 있도록 지원할 수 있다. 지금까지 일반적인 SI 소프트웨어에 대한 품질평가 방법론이나 평가 기법, 평가 도구 등이 개발된 사례가 있으나 패키지 소프트웨어의 경우에는 아직까지 국내에서 활용할 수 있는 구체적인 체계가 구축되어 있지 않은 실정이다. 패키지 소프트웨어는 하나의 소프트웨어 유형에 대해 다수의 제품이 개발되어 경쟁하게 되는 만큼 그 소프트웨어들 중에서 요구에 맞는 소프트웨어를 선택하기 어려우므로 이를 지원한 수 있는 방법의 개발이 중요한 의미를 가지고 있다. 본 연구에서는 패키지 소프트웨어 시험을 위한 표준인 ISO/IEC 12119를 기반으로 소프트웨어 패키지를 시험하여 결과를 산출한 수 있는 시험모듈과 품질검사표를 개발하여 패키지 소프트웨어 시험에 적용할 수 있도록 하였다.

• Asia pacific journal of information systems
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• v.11 no.4
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• pp.155-173
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• 2001

This study identified CSFs(Critical Success Factors) for successful ERP system implementation in small and medium firms, and empirically tested relationship between CSFs and user performance. Survey questionnaires were distributed via email & fax to 142 firms that have implemented ERP systems. Out of 52 responded questionnaires, 46 data sets were available for statistical analysis with SPSSWin8.0. CEO's participation, vendor support & service, securing human resources, effective use of software, and hardware capacity were identified as CSFs from factor analysis. Among those factors, vendor support & service and effective use of software were related to user performance, and the relationship was shown to be statistically significant. Study results also showed that user performance of ERP system was significantly different among those surveyed firms when ERP system package products were used as a simple proxy measure of independent variable.

• Journal of Information Technology Services
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• v.8 no.3
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• pp.51-65
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• 2009

National qualification system for SW engineering is intended to be mechanisms to assure the competence of SW professionals. Qualification system for SW engineering can be categorized as national qualification, nationally certified private qualification, and private qualifications. In this paper, we present a summary report of needs analysis for new national qualification systems, based on the survey from human resource department managers of IT companies in IT service, package SW and embedded SW industry. The survey results show that SW qualification system is appropriate for evaluation and career management, but does not provide up-to-date information concerning the technology assessment and change. Based on the result form needs analysis, we suggest the SW specialist and embedded SW specialist as new licenses in national qualification system. In addition, we also propose SW quality management engineer, systems management engineer, IT Protect management engineer, network management engineer and SW architect engineer, as new nationally certified private qualifications.

• Proceedings of the Korea Information Processing Society Conference
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• 2000.04a
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• pp.962-966
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• 2000

오늘날 수많은 패키지 소프트웨어들이 제품화되어 출시되고 있다. 하나의 소프트웨어 유형에 대해 다수의 제품이 사용자의 선택을 기다리고 있다. 따라서, 개발 업체는 다수 사용자의 요구를 충족하는 소프트웨어를 개발하기 위해 사용자의 요구사항을 정확히 파악하여 제품에 반영할 수 있도록 해야 할 것이며 사용자는 다수의 제품 중에서 자신이 소프트웨어를 사용하려는 목적과 용도에 적합한 소프트웨어를 선택할 수 있어야 한다. 사용자가 이러한 선택을 할 때 적용할 수 있는 표준으로서 ISO/IEC 12119 정보기술 - 소프트웨어 패키지 - 품질 요구사항 및 시험이 있다. 본 연구에서는 ISO/IEC 12119를 적용하여 소프트웨어 패키지를 시험하고 최종적으로 결과를 판정할 수 있는 체계를 구축하였다.

• IEMEK Journal of Embedded Systems and Applications
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• v.18 no.5
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• pp.249-257
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• 2023

This paper discusses the increasing need for autonomous delivery robots due to the current growth in the delivery market, rising delivery fees, high costs of hiring delivery personnel, and the need for contactless services. Additionally, the cost of hardware and complex software systems required to build and operate autonomous delivery robots is high. To provide a low-cost alternative to this, this paper proposes a autonomous delivery robot platform using a low-cost sensor combination of 2D LIDAR, depth camera and tracking camera to replace the existing expensive 3D LIDAR. The proposed robot was developed using the RTAB-Map SLAM open source package for 2D mapping and overcomes the limitations of low-cost sensors by using the convex hull algorithm. The paper details the hardware and software configuration of the robot and presents the results of driving experiments. The proposed platform has significant potential for various industries, including the delivery and other industries.

• Journal of Engineering Education Research
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• v.2 no.1
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• pp.10-16
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• 1999

In this paper, we developed the internet-based educational software package (DVLab) for design and virtual experiment of the digital logic circuits. The DVLab consists of the LogicSim module for design and simulation of digital combinational/sequantial logic circuits, micro-controller application circuits and the BreadBoard module for virtual experiment and the Theory module for lecture and the Report/ReportChecker module and some other utility modules. All developed modules can be run as application programs as well as applets in the Internet. The LogicSim and the BreadBoard support real time clock function, output verification function on the designed circuits, trace function of logic values, copy-protection function of designed circuits and provide various devices including logic gates, TTLs, LED, buzzer, and micro-controller. The educational model of digital logic circuit design and experiment using the DVLab is also presented in this paper.

• Journal of Digital Convergence
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• v.13 no.12
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• pp.117-124
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• 2015

As the acceptance of statistical analysis has been increased because of Big Data, the needs for an advanced second generation of statistical analysis method like Structural Equation Model are also increasing. This study suggests how R-Program, as open software, can be utilized when Partial Least Square Model, one of the SEMs, is applied to statistical analysis. R is a free software as a part of GNU projects as well as a powerful and useful tool for statistical analysis including Big Data. The study utilized R and SmartPLS, a representative statistical package of PLS-SEM, and analyzed internal consistency reliability, convergent validity, and discriminant validity of the measurement model. The study also analyzed path coefficients and moderator effects of the structural model and compared the results, respectively. The results indicated that R showed the same results with SmartPLS on the measurement model and the structural model. Therefore, the study confirmed that R could be a powerful tool that is alternative to a commercial statistical package in the future.