• Journal of Digital Contents Society
• /
• v.18 no.5
• /
• pp.1001-1008
• /
• 2017

Because cyber attacks on industrial control systems can lead to massive financial loss or loss of lives, the standardization and the research on cyber security of industrial control systems are actively under way. As a related system, the industrial control system of social infrastructures must be equipped with the verified cryptographic module according to the e-government law and appropriate security control should be implemented in accordance with the security requirements of the industrial control system. However, the industrial control system consisting of the operation layer, the control layer, and the field device layer may cause a problem in performing the main function in each layer due to the security control implementation. In this paper, we propose things to check when performing security control in accordance with the security control requirements for each layer of the industrial control system and proper application.

• Molecular & Cellular Toxicology
• /
• v.1 no.3
• /
• pp.143-148
• /
• 2005

This review aims to show that industrial sustainable chemistry, minimizing or reducing the ecological impacts by the chemicals, is not an emerging trend, but is already a reality through the application of 'White Biotechnology' such as 'green' chemistry and engineering expertise. A large number of current industrial case studies are presented, as well as new developments from the chemical industry. The case studies cover new chemistry, new process design and new equipment. By articulating the requirements for industrial application of sustainable chemistry, this review also seeks to bridge any existing gap between academia and industry regarding the R & D and engineering challenges needed to ensure green chemistry research enables a more sustainable future chemical industry considering eco-toxicological impacts.

• Industrial Engineering and Management Systems
• /
• v.13 no.1
• /
• pp.43-51
• /
• 2014

This study presents an application of adaptive particle swarm optimization (APSO) to solving the bi-level job-shop scheduling problem (JSP). The test problem presented here is $10{\times}10$ JSP (ten jobs and ten machines) with tribottleneck machines formulated as a bi-level formulation. APSO is used to solve the test problem and the result is compared with the result solved by basic PSO. The results of the test problem show that the results from APSO are significantly different when compared with the result from basic PSO in terms of the upper level objective value and the iteration number in which the best solution is first identified, but there is no significant difference in the lower objective value. These results confirmed that the quality of solutions from APSO is better than the basic PSO. Moreover, APSO can be used directly on a new problem instance without the exercise to select parameters.

• IE interfaces
• /
• v.20 no.3
• /
• pp.245-256
• /
• 2007

Toyota Production System (TPS) has been known a new production paradigm applicable to every type of manufacturing industry, not restricted to automobile assembly system. The basic framework of TPS has been studied and presented actively; many enterprises from all over the world including some of large domestic companies, have adopted and applied. This study analyzed the cases for TPS introduction and application process of LG Electronics and SAMSUNG Electronics, Semiconductor Division. On a different areas of business items, different strategic approaches are developed and implemented on a two comparable domestic companies. Key success factors for two companies are analysed, and some issues are also discussed.

• Journal of Korean Institute of Industrial Engineers
• /
• v.41 no.2
• /
• pp.162-172
• /
• 2015

This paper proposes a Product Data Management (PDM) system architecture that supports end-user computing for small and medium businesses (SMBs) in Korea to build and maintain efficient and sustainable information systems for their product development. Its open database with relational tables enables existing common application programs such as Microsoft office suites to access product data in PDM systems. In addition, the interactive query processor provided by database management systems helps design engineers to build ad hoc queries in standard SQL database language to response different data requirements during their product development. The PDM architecture with the open database allows design engineers or technical staffs in SMBs to build and maintain their application programs for product development by themselves. To show the feasibility of the proposed architecture, this study implemented a prototype PDM system based on the architecture and database, and represents real-world product data with the implemented PDM system.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
• /
• v.14 no.3
• /
• pp.22-28
• /
• 2000

In this paper PTW(Power Tools for Windows) application method for analysis the industrial distribution system is proposed. T&D(Transmission and Distribution) and BICC methods is applied for the cable impedance and the X/R of transformer data is estimated by IEEE standard. The effectiveness of this method was improved by the electrical characteristics analysis of the real industrial distribution system.

• Journal of Korean Society of Industrial and Systems Engineering
• /
• v.35 no.4
• /
• pp.235-243
• /
• 2012

The Voronoi diagram of spheres and power diagram have been known as powerful tools to analyze spatial characteristics of weighted points, and these structures have variety range of applications including molecular spatial structure analysis, location based optimization, architectural design, etc. Due to the fact that both diagrams are based on different distance metrics, one has better usability than another depending on application problems. In this paper, we compare these diagrams in various situations from the user's viewpoint, and show the Voronoi diagram of spheres is more effective in the problems based on the Euclidean distance metric such as nearest neighbor search, path bottleneck locating, and internal void finding.

• Journal of Korean Society of Industrial and Systems Engineering
• /
• v.31 no.4
• /
• pp.10-20
• /
• 2008

This paper deals with the application of Supply Chain Operations Reference (SCOR) model to make a Service Supply Chain(sSC) of a hospital treatment service. At first, we compare the service supply chain with the traditional supply chain. At second, we apply the SCOR model to a service supply chain of a hospital treatment service and make new process of the hospital service supply chain if we need it. Finally, we explain the applied results and propose the improvement points. The used level of SCOR model is from level 1 to level 3.

• Proceedings of the KOSOMBE Conference
• /
• v.1996 no.11
• /
• pp.281-285
• /
• 1996

Pulsatile swelling behaviors and their application to drug delivery system were studied by using interpenetrating polymer networks(IPN) hydrogels constructed with poly(vinyl alcohol) and poly(acrylic acid). The PVA/PAAc IPNs hydrogels were symthesized by UV irradiation tallowed by repetitive freezing and thawing method. These hydrogels showed pH and temperature sensitive swelling behaviors. From the release experiment, the release amount of model drug incorporated into these hydrogels showed pulsatile patterns. Permeability coefficients obtained by various solutes differed in response to changes of permeation conditions.

• Journal of Korean Society of Industrial and Systems Engineering
• /
• v.27 no.4
• /
• pp.125-132
• /
• 2004

Computer simulation is widely known as a very powerful and practical tool to understand behaviors of considered systems and evaluate design alternatives. However, to use simulation technologies, one should acquire simulation languages, statistics, etc. Also, lots of resources such as time and money are necessary to develop models and analyze statistical data. These obstacles prevent one from adopting simulation tools easily. This paper presents practical guidelines for successful application of simulation. Firstly, we propose how to acquire simulation tools to help one who is going to use simulation techniques. Next guidelines are for introducing simulation software set including simulation and support softwares. Lastly, guidelines for simulation project management are presented.