• Convergence Security Journal
• /
• v.3 no.2
• /
• pp.33-40
• /
• 2003

The biggest problem for the oblivious transfer protocol is the rapid increasement of network traffic and computational complexity if the protocol is used as a sub-protocol compare to the case that when it is used as a standalone protocol. To fix such problems, in this paper, we propose a verifiable Non-interactive OT protocol that reduces the network traffic and computational complexity by preprocessing the necessary computations when the network traffic is low. The proposed protocol uses third root mechanism instead of square root mechanism that is used for the Fiat-Shamir signature mechanism and also uses 1-out-of-2 oblivious transfer based on signature mechanism. We also analyze the proposed protocol by comparing to the Lein Harn, YNIOT protocols.

• Journal of Convergence for Information Technology
• /
• v.8 no.3
• /
• pp.9-15
• /
• 2018

The effect of restaurant cook on food quality was analyzed. Data collection was done by the self - filling questionnaire which was directly written by the restaurant cooks. 592 parts were collected and analyzed. The results of the study were as follows. First, job characteristics and organizational justice were found to have significant influence on ego-resilience. Second, job characteristics and organizational justice have a significant influence on factors affecting empowerment. Third, Job characteristics were found to have a significant influence on food quality. Fourth, organizational justice has a significant influence on food quality. Fifth, ego-resilience and empowerment were found to have a significant influence on food quality food quality.

• Korean Journal of Construction Engineering and Management
• /
• v.22 no.1
• /
• pp.106-115
• /
• 2021

Classifying work trades using images can serve an important role in a multitude of advanced applications in construction management and automated progress monitoring. However, images obtained from work sites may not always be clean. Defective images can damage an image classifier's accuracy which gives rise to a needs for a method to enhance a work trade image classifier's performance. We propose a method that uses work dependency information to aid image classifiers. We show that using work dependency can enhance the classifier's performance, especially when a base classifier is not so great in doing its job.

• Applied Chemistry for Engineering
• /
• v.33 no.6
• /
• pp.551-556
• /
• 2022

The desalinated water obtained by the water treatment process based on the membrane is attracting a lot of attention as a promising technology that can solve the global water shortage problem. Reverse osmosis membrane-based desalination, one of the most widely used desalination processes, is a technology that desalinates abundant seawater on Earth, thus having great potential in the desalination industry. To improve the performance of the desalination process, it is necessary to understand the reverse osmosis mechanism of the membrane at the atomic/molecular level. In this review, we introduce molecular simulation, which plays an important role in material research today, and the roles of computational simulation at the atomic/molecular level in the development of reverse osmosis membranes.

• Journal of Adhesion and Interface
• /
• v.25 no.1
• /
• pp.152-156
• /
• 2024

We conducted research on a two-component epoxy adhesive material based on acid graft polyolefin using maleic anhydride to address the lack of formability due to epoxy adhesives' hard segments. To understand the graft efficiency according to reaction conditions, we conducted studies based on polyolefin molecular weight, initiator half-life, and initiator concentration for each process. The maleic anhydride grafted polyolefin produced was used as an adhesive material for aluminum and CPP film lamination after mixing with epoxy hardener. The graft efficiency in the solution process was approximately 30% superior to that in the melt process, and an increase in graft ratio confirmed an increase in peel strength.

• Journal of the Korea Convergence Society
• /
• v.8 no.11
• /
• pp.15-20
• /
• 2017

Recently, with the development of the IT industry, interest in computer convergence technology is increasing in various fields. Especially, in the semiconductor field, a vision system that uses a camera and computer convergence is often used to inspect semiconductor device defects in the production process. Various systems have been studied to remove noise, which is a major cause of degradation in processing of data related to these image processing systems. In this paper, we try to detect defects in BGA (Ball Grid Array) package devices by recognizing defects in advance during mass production. We propose a measurement system using a Gaussian filter, a Median filter, and an Average filter, which are widely used for noise reduction of image data Applying the proposed system to the manufacturing process of the BGA package can be used to judge whether the defect is good or not, and it is expected that productivity will be improved.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
• /
• v.8 no.1
• /
• pp.137-147
• /
• 2013

The purpose of this study is to review the relationship between knowledge management and innovation, and the moderating effect of Convergence Federation in Small & Medium Business. In order to verify and achieve the purposes mentioned above, questionnaire data are gathered and analysed from 481 establishments located in Kangwon-do, Chungpuk-do, Kyunggi-do, Kyungpuk-do province and so on. Multiple regression and multiple hierarchical regression analysis are applied to test the proposed hypotheses: 1) the relationship between knowledge management and innovation, 2) the moderating effects of Convergence Federation's participation on the relationship between knowledge management and innovation. Empirical survey's findings are as follows; First, knowledge acquisition and application showed to be positively related with all innovation activities(organization innovation, human resource innovation, product innovation, and quality innovation). Second, Convergence Federation's participation strengthened the positive relationship between knowledge acquisition and product innovation, and it did also the positive relationship between knowledge application and product innovation.

• Journal of Korea Fair Competition Federation
• /
• no.125
• /
• pp.105-117
• /
• 2006

The policy of th United States...to preserve the vibrant and competitive free market that presently exists for the Internet and other interactive computer services, unfettered by Federal or State regulation

• The Proceedings of the Korean Institute of Illuminating and Electrical Installation Engineers
• /
• v.27 no.3
• /
• pp.22-27
• /
• 2013

• Journal of the Korea Convergence Society
• /
• v.8 no.12
• /
• pp.275-281
• /
• 2017

The automobile cowl cross bar which is a backbone frame part inside the cockpit module has been designed with more complex geometries recently due to demands of its enhanced functions and reduced weight of car. The traditional manufacturing process using welding between tubes with different diameters shows several problems such as poor mechanical characteristics and appearance, etc. Therefore, in this study, manufacturing processes which can eliminate the welding process were developed by applying one-piece metal forming processes such as tube drawing and radial swaging. As results, it was found that the one-piece manufacturing processes give better bending strength than the traditional welding process and the swaging process shows the lowest manufacturing cost.