• Transactions of Materials Processing
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• v.1 no.1
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• pp.42-51
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• 1992

The ring compression test has been widely employed as an experimental means to determine the friction factor. The calibration curves are obtained by the rigid-plastic finite element analysis for various work-hardening exponent and strain-rate hardening exponent. The effects of work-hardening exponent and strain-rate hardening exponent are thoroughly studied and discussed from the finite element computation. The change of friction factor during height reduction in ring compression is also discussed. Then, the method to estimate the change of friction factor during ring compression is proposed.

• Journal of Arbitration Studies
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• v.23 no.4
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• pp.169-189
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• 2013

Organizations have traditionally been established and managed by men. As more women enter organizations, a new kind of conflict occurs at work owing to differences between men and women. Conflict can generate positive outcomes if managed properly; thus, this study outlines the causes of creating conflicts between men and women and considers whether ADR is applicable and useful at work. As ADR offers a means of bringing workplace justice at lower cost and with speed, it can serve as an effective way of resolving conflicts between men and women at work. In order to use ADR as a method of resolving conflict between men and women, I suggest reinforcing the function of a grievance committee in a company and cultivating an ADR specialist.

• Proceedings of the CALSEC Conference
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• 1999.07a
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• pp.207-213
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• 1999

When function modeling with IDEF0 which is called as a standard methodology for CALS (FIPS 183), the initial work is to determine the purpose and viewpoint, and the next work is to generate a data list and an activity list. This work requires participant's discussion and agreements. The main problems for these working are a communication between participants and efficient discussion processing. Brainstorming is the most useful method for this work. The paper is for development for the modeling assistant tool to promote the business modeling. In this paper, we will introduce the tool which name is 'MindMapper' and 'Dyna-IDEF'. Mind-mapper is software for mind-map method that is used for creative thinking. Using this tool, we refine the result of the brainstorming about activity list and translate the result into the functional model of IDEF0 using Dyna-IDEF. The translated functional model is prototype model without ICOM arrows.

• Journal of the Korean Ceramic Society
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• v.24 no.1
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• pp.47-55
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• 1987

The purpose of this work is to establish the basic calibration data for the efficiency of grinding by investigating the Bond's Work Index employing Korean Kaolin as a reference mateial with the laboratory-scale ball mill. A small ordinary ball mill has a dimension of 133 inside diameter and 144mm long. The analysis of the experimental results in this work sets up a equivalent calibration method with the laboratory-scale ball mill to those with special mill. The theoretical expression, derived from the rate equation proposed by Miwa, is obtained to anticipitate the stable revolution number for the next grinding cycle. The proposed equation is more systematic and acurate than lshihara's empirical equation is more systematic and acurate than lshihara's empirical equation for the measurement of gindability of a ball mill.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.8 no.4
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• pp.708-712
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• 2007

Restriking is a shaping method added to the processed products to get higher precision and accuracy in the press die process. This method is frequently used in bending works and drawing works. The purpose of this research is to develop a design for rectangular drawing die punch and die block form which enables drawing formation and restriking in one set.

• Journal of the Korean Society of Industry Convergence
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• v.24 no.6_1
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• pp.645-658
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• 2021

In this paper, we propose a new approach to intelligent control based on fuzzy logic for work efficiency improvement of smart factory by the applicaion of ariticulated robot. The intelligent control that is applied to the working process by the joint of robotic manipulator is the main focus to improve a work efficiency for implimentation of smart factory in general manufacturing process. In this study, we propose a new method of a fuzzy model and then develop a nonlinear relationship between interaction forces and manipulator position using a fuzzy model. The reliability of the proposed control method is illustrated by simulation and experiments.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2021.05a
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• pp.155-156
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• 2021

Most of the construction works in domestic are not direct undertaking work, but by a contract method including subcontracting. Therefore, a general contractor for each project jointly carry out construction work with a specialty contractor for each engineering type. However, in terms of contract, this method is not a joint venture contract, but a subcontract. Accordingly, this system can cause various problems between the prime contractor and the subcontractor. Therefore, this study aims to extract and present the actual obstacle factors in terms of specialty contract company performing specialty construction work for construction project. The presented contents are expected to present the standard for the cooperation system that the prime contractor and the subcontractor can win-win.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2023.11a
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• pp.265-266
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• 2023

Recently, many disasters have occurred due to poor management of construction site. In addition, as legal regulations on safety management at construction sites are strengthened, its importance is being further emphasized. In relation to smart safety management technology, a study was introduced to build an analysis model through various safety-related data collected within construction companies. This model derives quantitative disaster risk about the site level through information related to past disasters and near misses. However, construction work is performed separately by work group of each partner company. There is a limitation in that individual workers cannot directly experience this analysis information. In this study, we propose a method to derive the safety disaster risk of individual work units from disaster risk of the site level. We expect that this study to be helpful for smart safety management technology of construction sites.

• Journal of the Korean Home Economics Association
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• v.41 no.5
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• pp.179-191
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• 2003

The study is to suggest easier making method of skirts and slacks as to compare production process between manufacturers and references of clothing construct in universities. Skirts and slacks have simple production process and they are basic subjects in clothing construct class. But most references have just contents which are to make basic styles of skirts and slacks made basic materials. Continuous development of new material and variety of style request more efficient and easer making method in the reference of clothing construct. So the making methods of references and manufacturers are compared and analyzed in this study In references, there are many hand work and sub-work because they are for a person who make own clothes. In contrast, manufacturers have to product many variety clothes of good quality for many people and think the production cost of clothes. They use more simple and efficient method that include their know-how to meet changing fashion situation. In making methods of skirts and slacks, differences between references and manufacturer are in sewing of waist band and zippers and location of interlining. Manufacturers use variedly sewing method of waist band according to material and their experience. Especially handling for wrong side inseam of waist band is distinct between references and manufacturers. References have basic and detail work and manufacturers know processing order having even grade work to keep continuous production. The making method of clothes have to change and improve according to the situation. The more useful making method get to include their merits and references need to add more practical method and knowledge.

• Journal of the Korea Institute of Building Construction
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• v.16 no.4
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• pp.331-339
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• 2016

According to high-rise, complexation, and enlargement of buildings, various construction methods are being developed, and the significance of construction method selection about main work types has emerged as a major interest. However, it has been pointed out that hand-on workers cannot consider project characteristics carefully, and they lack an objective standard or reference for main construction method selection. Hence, the selection is being made depending on hand-on workers' experience and intuition. To solve this problem, various studies have proceeded for construction method selection of main work types using Artificial Intelligence like Fuzzy, AHP and Case-based reasoning. It is difficult to apply many different kinds of construction method selection to every main work type with consideration for characteristics of work types and condition of a construction site when selecting construction method in the field. Accordingly, this study proposed the decision-making model which can apply to fields easily. Using matrix analysis and liner transformation, this study verified consistency of study models applied in the process of soil retaining selection with a case study.