• Transactions of Materials Processing
• /
• v.9 no.4
• /
• pp.413-420
• /
• 2000

In the die casting process, the flow of liquid metal has significant influence on the quality of casting products and die life. For the optimal process design of front housing part of aircon compressor, various analyses were performed in this study by using computer simulation code, MAGMAsoft. The simulation has been focused on the molten metal behaviors during the filling and solidification stages for the sound casting products. Two cases of casting design that have different types of gating system are considered in the analysis. The potential sites where the casting defects may occur is examined by computer simulation and an improved design process is proposed. Also the effect of partial squeeze on the quality of casting products is considered and the optimal time lag after filling process is determined. For the die-stability, the effect of operational parameters such as die temperature, heat cycle and spot cooling on the die life has also been analyzed.

• Proceedings of the Korean Society for Technology of Plasticity Conference
• /
• 1997.10a
• /
• pp.168-171
• /
• 1997

With the development of computers, CAD(Computer-Aided-Design)/CAM (Computer-Aided-Manufacturing) has been increasingly applied to manufacturing processes to increase productivity, and recently studies of expert systems, a field of Al(Artificial Intelligence), are being carried out to assist process designs. In this study, an expert system for the process design of ball stud was developed. The adequacy of the developed system was examined through comparisons with actual blueprints and verification by experts. The designed process data was saved in dxf file format for transfer to AutoCAD, from which prototype process blueprints were obtained.

• Transactions on Electrical and Electronic Materials
• /
• v.5 no.5
• /
• pp.180-184
• /
• 2004

This paper proposes a novel methodology of systematic global calibration and validates its accuracy and efficiency with application to memory and logic devices. With 175 SIMS profiles which cover the range of conditions of implant and diffusion processes in the fabrication lines, the dominant diffusion phenomenon in each process temperature region has been determined. Using the dual-pearson implant model and fully-coupled diffusion model, the calibration was performed systematically. We applied the globally calibrated process simulator parameters to memory and logic devices to predict the optimum process conditions for target device characteristics.

• Proceedings of the Korean Society of Computer Information Conference
• /
• 2008.06a
• /
• pp.243-249
• /
• 2008

Based on a comprehensive framework that reflects lifecycle requirements of KMs and BPMs, we propose an PKMS(Process based KMS) for integrating KMs and BPMs in order to combine the advantages of the two paradigms. This paper first defines the priority order of knowledge according to knowledge type and classifies it into three groups which consist of Basic KM, Practical KM and Reference KM. Then, it suggests PKMS knowledge map composed of much core-knowledge each of which has information about a unit of the related business process. Using the PKMS Knowledge map, we can directly provide related core-knowledge related for the business process while a person is working a unit of business process. This paper designed the PKMS applied to employment insurance business part. Long term goal of the concepts is to concern a change management organization of knowledge on PKMS.

• Transactions of Materials Processing
• /
• v.5 no.1
• /
• pp.61-71
• /
• 1996

A computer-aided process design system for axisymmetric deep drawing products has been developed. An approach to the system is based on the knowledge based system. Knowledges for the system are formulated from the plasticity theory handbooks experimental results and empirical knowhow of the field experts. the system is composed of four main modules such as geometrical design test & rectification and user modification. The input to the system is final sheet-metal object geometry and the output from the system is process sequence with intermedi-ate objects geometries and process parameters, such as drawing load blank holding force clearance cup-drawing coefficient.

• Journal of Multimedia Information System
• /
• v.8 no.4
• /
• pp.285-294
• /
• 2021

The development process of domestic CG (Computer Graphics) needs to be studied by classifying the technical part and the design part. This paper analyzes how early domestic broadcast equipment evolved and focused on what went through the development process. Domestic broadcasting companies have introduced and used overseas equipment and have begun to develop their own technology. The development process of the early domestic production technology of broadcasting stations was classified into Character Generator, On-line Real-Time Graphic and Sport Coder. It was found that the orientation of broadcasting technology was conclusively focused on visualization, with socio-cultural factors acting along with the evolution of hardware and software. This research is meaningful in reorganizing the history of the development process of domestic CG technology in the early days through previous research (primary verification), newspaper articles and news coverage (secondary verification). This paper looks at what is missing by regaining the past of CG, and argues that with the advent of new technologies today, we must develop through appropriate division of roles and collaboration between engineers and designers.

• Journal of The Korean Association of Information Education
• /
• v.9 no.1
• /
• pp.57-66
• /
• 2005

The grade-schooler could develope computer literacy education with the Peer tutoring system which is method of one higher level learner can teach and help another learner. This system can hold the result in common each other, also a progress to get the successful result. Moreover, they do the project in cooperation. After the application of the peer tutoring, the basic of computer ability increase in quality. We have side-effects which are increased the interest of computer function after real teach and learning process. And we get good atmosphere which is confidence each other and helping mood in studying another school work. If this study should process changed form, it will be developed more regular system than this study.

• International Journal of Computer Science & Network Security
• /
• v.22 no.3
• /
• pp.155-162
• /
• 2022

Over the last 10 years, there has been rapid growth in the use of Machine Learning (ML) techniques to automate the process of intrusion threat detection at a scale never imagined before. This has prompted researchers, software engineers, and network specialists to rethink the applications of machine ML techniques particularly in the area of cybersecurity. As a result there exists numerous research documentations on the use ML techniques to detect and block cyber-attacks. This article is a systematic review involving the identification of published scholarly articles as found on IEEE Explore and Scopus databases. The articles exclusively related to the use of machine learning in Intrusion Detection Systems (IDS). Methods, concepts, results, and conclusions as found in the texts are analyzed. A description on the process taken in the identification of the research articles included: First, an introduction to the topic which is followed by a methodology section. A table is used to list identified research articles in the form of title, authors, methodology, and key findings.

• 제어로봇시스템학회:학술대회논문집
• /
• 1987.10b
• /
• pp.667-669
• /
• 1987

This paper deals with the automation of the brewing process using digital computer. The work has been carried out to develop real-time control software for fermentation process. From the application of the system, quality improvement and effective process management are achieved.

• Honam Mathematical Journal
• /
• v.27 no.3
• /
• pp.505-513
• /
• 2005

The aim of this paper is to establish a functional central limit theorem for multivariate moving average process generated by negatively associated random vectors under the finite second moments.