• Structural Engineering and Mechanics
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• v.75 no.6
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• pp.701-711
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• 2020

This papers studies nonlinear stability and post-buckling behaviors of geometrically imperfect metal foam doubly-curved shells with eccentrically stiffeners resting on elastic foundation. Metal foam is considered as porous material with uniform and non-uniform models. The doubly-curved porous shell is subjected to in-plane compressive loads as well as a transverse pressure leading to post-critical stability in nonlinear regime. The nonlinear governing equations are analytically solved with the help of Airy stress function to obtain the post-buckling load-deflection curves of the geometrically imperfect metal foam doubly-curved shell. Obtained results indicate the significance of porosity distribution, geometrical imperfection, foundation factors, stiffeners and geometrical parameters on post-buckling characteristics of porous doubly-curved shells.

• Proceedings of the Safety Management and Science Conference
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• 2004.11a
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• pp.47-51
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• 2004

Facility layout for enterprise's competitive power strengthening and construction of offensive manufacture line and direction presentation for design of production management system that is new by operation improvement according to S company. In enterprise in JIT(Just in Time) system of leading persons affecting in productions among a lot of habitat factor analyze. It is that through equipment Layout among those factors enterprise my problem improve and serves enterprise's absolute ability cultivation. Even if it is JIT production main point that affect to apply the modular production to productive system among at equipment Layout, lot size, bottleneck session etc. worker's multi-function anger, change of demand factor and productive capacity add. 'S' Through enterprise's example, I wish to establish Korean medium and small enterprises' manufacturing industry style equipment Layout model by taken place effect interpretation.

• Journal of the Korea Safety Management & Science
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• v.12 no.2
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• pp.25-33
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• 2010

Nowadays worldwide leading companies try to establish more efficient and comprehensive management system for getting high quality, reliability and safety. In this paper, we investigate standards for quality management, dependability management and risk management. We also suggest an integrated and comprehensive system of quality(ISO/TS16949), dependability (IEC60300)and risk(JIS Q2001). The evaluation method on the performance of dependability management systems are developed and applied for the semiconductor equipment company.

• Proceedings of the Korean Institute of Interior Design Conference
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• 2005.05a
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• pp.159-163
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• 2005

The purpose of this study was to analyze the relationship between the product characteristics and spatial configuration in a retail store. This study utilized the analytical method of Space Syntax, and the software package used for the analysis was New-wave and Pesh. The qualitative study focused on the showroom of 'H INTERIOR', a leading furniture company in Korea, and examined the accessibility of the space. The result showed that the main accessible route was well established in the retail store, and more trendy and fashionable products were likely to be displayed in more accessible places. Also, the products in the selected showroom were arranged according to the pricing information, so that products with lower price were displayed in more accessible places. This study suggested that it be important to adequately and appropriately display the products in relation to the characteristics of products, and implied that the method of Space Syntax was useful to strategically evaluate the display in retail spaces.

• IE interfaces
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• v.6 no.2
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• pp.103-115
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• 1993

In dies manufacturing industry, quality, cost, and production leadtime are very important. In this study, we describe the current status and characteristics of dies industry in Korea. AS a case study, we introduce a CIM system implemented in a leading dies manufacturer and describe its components and functions. Subsequently, we analyze the effectiveness of the CIM system by using the real data between 1987 and 1992 from the company. It is indicated that the most significant impact of CIM is the reduced cost, followed by increased sales, reduced leadtime, and improved quality of dies. All these four variables show positive correlations with one another. However, the data indicate that the number of employees are not directly related with other variables : probably because additional personnel are required for operating new technology such as CAD/CAM and information network.

• Industrial Engineering and Management Systems
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• v.2 no.1
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• pp.45-54
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• 2003

Enterprise Resource Planning(ERP) systems offer pervasive business functionality the applications encompass virtually all aspects of the business. Understanding and managing this pervasiveness will result in a successful and productive business application platform. Because of this pervasiveness, implementations have ranged from great successes to complete failures. This article has two distinctive parts. The first proposes and discusses a systematic process based on consulting experiences of LG CNS (leading information system company in Korea) for ERP selection. Also, the second provides the key factors that are critical to the successful implementation of ERP. The second part reports the results of a study carried out to assess a number of different ERP implementations in different organizations. A case study method of investigation was used, and the experiences of five Korean manufacturing companies were documented. The critical factors in the adoption of ERP are identified as: learning from the experiences of others, appointment of a process innovator, establishment of committees and project teams, training and technical support for the users, and appropriate changes to the organizational structure and managerial responsibilities.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.25 no.9B
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• pp.1579-1587
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• 2000

This paper presents the properties of the RF part in the receiving system based in IMT-2000 terminal technology. It mainly discuss the RF parameter performance of the receiving system for mobile telecommunication comparable to IS-98A and J-STD-018 specifications of commercially available CDMA and PCS, and is to anticipate the processing gain of the IMT-2000 receiving system, processing gain according to data processing rate, and terminal noise figure according to processing gain, relationship between noise figures according to Eb/Nt, Ioc. It is performed by such analysis method as CDMA and PCS receiving systems. Transmission bandwidth is n$\times$1.25 MHz(n=1, 3, 6, 9, 12) which is recommended by Qualcomm and NTT, the leading company in cdma 2000. Data transmission rate of IMT-2000 is classified into three cases as in moving vehicle environment of 144Kbps, outdoor pedestrian environment of 384Kbps, and indoor office environment of 2Mbps

• Proceedings of the Korea Water Resources Association Conference
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• 2016.05a
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• pp.75-75
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• 2016

2002년 아르헨티나발 글로벌 경제위기로 Suez Environnement의 수익성은 크게 악화되어 그 손실 규모가 약 21억 5천만 유로에 이르게 됩니다. 이에 Suez Environnement는 수익성 중심의 실리 경영을 위하여 실행계획을 수립 추진하였고, 그 성과는 성공적 이었습니다. 2002년 7.6%이었던 자본수익률(ROCE: Return on Capital Employeed)이 2006년 13.0%까지 상승한 것입니다. 그리고 2015년에는 서비스 인구 기준 글로벌 제1의 물기업으로 성장하였습니다. 다음 그림은 Suez Environnement의 실지 중심형 실행계획을 보여주고 있습니다. 이에 본 논고에서는 2015년 글로벌 물기업 순위 1위를 차지한 Suez Environnement의 성장 과정을 살펴봄으로써 그 시사점을 고찰하였습니다.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.23 no.54
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• pp.111-117
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• 2000

In this study we analyzed the relationship between sensibility image and the needs to purchase, by studying the relations between the brand name of the beer which consumers recognize and the needs to purchase, and by extracting the sensibility image from the consumers about how they feel about the advertisement. For the survey we first chose 30 sensibility related adjectives from the preliminary survey and chose the 6 most selected sensibility related adjectives by showing beer advertisements from the 3 leading companies. In the main survey we used 7 point scale measurement to evaluate the sensibility scale in each advertisement using the 6 sensibility related adjectives we chose from the preliminary survey, such as cleanness, coolness, pleasantness, softness, easiness, and studied why they feel that way about the advertisement. We hope to contribute on establishing the advertising strategy of the company, based on sensibility image which the consumers are in favor of.

• East Asian Economic Review
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• v.24 no.4
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• pp.349-388
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• 2020

The US-China trade war forced a reluctant semiconductor industry into someone else's fight, a very different position from its leading role in the 1980s trade conflict with Japan. This paper describes how the political economy of the global semiconductor industry has evolved since the 1980s. That includes both a shift in the business model behind how semiconductors go from conception to a finished product as well as the geographic reorientation toward Asia of demand and manufactured supply. It uses that lens to explain how, during the modern conflict with China, US policymakers turned to a legally complex set of export restrictions targeting the semiconductor supply chain in the attempt to safeguard critical infrastructure in the telecommunications sector. The potentially far-reaching tactics included weaponization of exports by relatively small but highly specialized American software service and equipment providers in order to constrain Huawei, a Fortune Global 500 company. It describes potential costs of such policies, some of their unintended consequences, and whether policymakers might push them further in the attempt to constrain other Chinese firms.