• Journal of the Institute of Electronics Engineers of Korea SD
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• v.41 no.5
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• pp.99-105
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• 2004

A shared-capacitor charge-sharing ROM (SCCS-ROM) using dummy bit lines is proposed. The SCCS-ROM reduces the bit line swing voltage using the charge-sharing technique of the conventional charge-sharing ROM (CS-ROM). Although the CS-ROM needs three small capacitors per output bit, the proposed SCCS-ROM shares the capacitors so that it needs only three capacitors. The SCCS-ROM implements the capacitors using dummy bit lines. This not only increases noise immunity but also reduces power. A SCCS-ROM with 8K${\times}$15bits implemented in a 0.35${\mu}{\textrm}{m}$ CMOS process. The SCCS-ROM consumes 8.63㎽ at 100MHz with 3.3V The simulation results show that the SCCS-ROM reduces 8.4% power compared to the CS-ROM.

• Journal of the military operations research society of Korea
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• v.35 no.3
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• pp.139-156
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• 2009

This study reviewed influential factors on knowledge sharing and examined to verify how attitude and recognition serve toward security in knowledge-related activities. This two-part study will dedicate to diffusion of knowledge sharing in the ROK Army. The findings indicate that trust and computer self-efficacy are influential factors which cause increase in knowledge sharing intention. Friendly attitude of the members result in strengthening the knowledge sharing in National Defense Intranet. As a result, it could be inferred that organizational and systematic efforts are required to foster the knowledge sharing in the army and policy to induce members' friendly attitude toward security is in need as well.

• Journal of Korean Society for Quality Management
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• v.45 no.4
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• pp.867-888
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• 2017

Purpose: This study suggests a SCQM model for the national Defense field based on earlier studies on the Quality Management of supply chain and to identify critical activities factors of supply chain that makes effect on the business results. Also, this study analyzed moderating effects of performance sharing between businesses which is becoming the big issues with regard to the supply chain cooperation. Methods: A causality of qm activities factor of SCQM model affecting benefit sharing and business performance was analyzed by using structural equation model. A company used in analysis performed a survey by targeting 297 Defense SMEs(weapon-system/non-weapon system). Results: As a result of analyzing the influence relationship between key activity of SCQM on finance performance, it was identified that Management Infra(MI), Process Management(PM), Human Resource Management(HRM), Performance Sharing activity(PS) made significant effect on Financial Performance, and Human Resource Management(HRM) and Performance Sharing(PS) activity made effect on non-financial Performance. Conclusion: The four variables(MI, PM, HRM, PS) of Defense SCQM were significantly effecting Financial performance and two variables(HRM, PS) were significant effected non-Financial performance. We also proved the moderating effect of performance sharing.

• Journal of Korea Society of Digital Industry and Information Management
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• v.6 no.2
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• pp.55-69
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• 2010

This article proposed the authentication protocol for peer-to-peer resource sharing community. The proposed protocol does not require a priori information for generating and exchanging authentication key. Also this protocol can provide the delicate access control by allowing the user(authenticator) to assign the trust level to the authentication supplicant, which can be used to decide if the resource providing node will accept the resource sharing request from a resource requesting node. Trust Relationship Chaining provides the environment where trust levels (included in the trust table) of nodes in the resource sharing community are propagated among nodes when trust tables are exchanged between two nodes engaged in mutual authentication process and authentication refresh so that any two nodes which are not directly mutual-authenticated can assign the trust level each other for the access control for resource sharing. In the proposed protocol a node can implements the authentication refresh continuously to verify the effectiveness of authentication after mutual authentication so that the authentication of new node or authentication revocation(effectiveness cancellation) of the departed node can be propagated to the all the nodes in RSC and eventually safe resource sharing community is configured.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.13 no.3
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• pp.1385-1402
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• 2019

Quickly picking up some valuable information from massive manufacturing event stream usually faces with the problem of long detection time, high memory consumption and low detection efficiency due to its stream characteristics of large volume, high velocity, many variety and small value. Aiming to solve the problem above for the current complex event processing methods because of not sharing detection during the detecting process for massive manufacturing event streams, an efficient complex event processing method based on multipattern sharing is presented in this paper. The achievement of this paper lies that a multipattern sharing technology is successfully used to realize the quick detection of complex event for massive manufacturing event streams. Specially, in our scheme, we firstly use pattern sharing technology to merge all the same prefix, suffix, or subpattern that existed in single pattern complex event detection models into a multiple pattern complex event detection model, then we use the new detection model to realize the quick detection for complex events from massive manufacturing event streams, as a result, our scheme can effectively solve the problems above by reducing lots of redundant building, storing, searching and calculating operations with pattern sharing technology. At the end of this paper, we use some simulation experiments to prove that our proposed multiple pattern processing scheme outperforms some general processing methods in current as a whole.

• Journal of Aerospace System Engineering
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• v.7 no.1
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• pp.32-38
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• 2013

This paper presents a survey results on the material properties sharing system database on composite in USA. The requirements on management and database for Korean composite product that meet KAS (Korean Airworthiness Standard) are suggested. The certification policy on composite material qualification of also introduced. The benefits to material supplier, aircraft manufacturer and certification authority, which get through the database have been considered. The database managing process, composite material manufacturing process, properties and design allowable meeting KAS have been suggested.

• Design & Manufacturing
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• v.9 no.2
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• pp.6-9
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• 2015

The objective of manufacturing knowledge sharing platform is to convert the production experience like a worker's know-how into quantitative values, to construct database of the process technologies and to share the technologies systematically via web portal service. In addition, the knowledge sharing platform contains the total production processes of automobile and mobile products such as information of experts, facilities, and cutting-edge R&D outputs. Automobile, telecommunication mobile, and semiconductors account for a large amount of Korea's export industry rate. These industries need production technology which is a result of converting worker's know-how and R&D. Manufacturing knowledge portal aims to enable transforming production experience such as worker's know-how into standardized form for constructing database and sharing technologies systematically. Manufacturing knowledge portal can contribute to small and mid-sized manufacturing companies with further improvements.

• Journal of Digital Convergence
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• v.11 no.12
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• pp.311-318
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• 2013

It is very important to design security policy and technical framework on sensitive private data in order to protect user privacy in smart grid environment. This paper introduces secret data sharing schemes proposed for privacy protection in smart grid, and presents technical problems of them. The proposed scheme in this paper, reduces the number of rounds in sharing process and also in restoration process, and can select how many databases would be used, so eventually it shows enhancements in terms of efficiency and security.

• Journal of the Korean Society of Manufacturing Process Engineers
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• v.15 no.5
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• pp.66-72
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• 2016

Gearboxes are mechanical components that transmit power by adjusting input and output speed and torque. Their design requirements include small size, light weight, and long lifespan. We have investigated the effects of carrier pinhole position error on the load sharing and load distribution characteristics of a planetary gear set with four planet gears. The simulation model for a simple planetary gear set was developed and verified by comparing analytical results with a putative model. Then, we derived the load sharing and load distribution characteristics under various pinhole position error conditions using the prototypical simulation model. The results showed that the mesh load factor and face load factor increased with the pinhole position error, which then influenced the safety factor for tooth bending strength and surface durability.

• Journal of the Korea Safety Management & Science
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• v.14 no.4
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• pp.247-258
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• 2012

It seems most important for a manufacturing company to be well aware of its relationship with suppliers. This is why it is essential to analyze and control the structural relationship among CEO's characteristics, relations between suppliers and manufacturers and new product development performances affected by such relations. The present study may be summed up as follows: First, from the analysis of characteristics of manufacturing company's CEO and relations between suppliers and manufacturers, it could be verified that CEO's characteristics exercised influence upon sharing of product development process and upon cooperation for technical manpower, but not upon sharing of core technologies, signifying the fact that nothing could be more important than the role of CEO who has strong will to improve his or her relations with suppliers; and Second, from the analysis of relations between suppliers and manufacturers as well as relations between management and new product development performances, it became evident that both management performance and product development performance were affected by sharing of product development process. It was also known that cooperation for technical development process had influence upon the product development performance but not upon the management performance. Furthermore, the analysis showed that both management performance as well as product development performance were affected by sharing of core technologies.