• Journal of Institute of Convergence Technology
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• v.6 no.1
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• pp.27-30
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• 2016

In recent years, manufacturing industry takes a lot of significant change - such as Industry4.0, SMART factory, and IoT(Internet of things). To satisfy their requirements, many cutting-edge machineries are provided to enhance manufacturing industry's productivity. Also, IT technologies are applied to many machinery part and improve their functions. In Korea, Chung-buk plays an important role in machinery part industry. In this paper, we survey, analyze and summarize the current machinery part industry focused on Chunk-buk Area.

• Journal of Institute of Convergence Technology
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• v.8 no.1
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• pp.15-20
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• 2018

Recently a GPU has acquired programmability to perform general purpose computation fast by running thousands of threads concurrently. This paper presents a parallel GPU computation algorithm for dense matrix-matrix addition and scalar multiplication using OpenGL compute shader. It can play a very important role as a fundamental building block for many high-performance computing applications. Experimental results on NVIDIA Quad 4000 show that the proposed algorithm runs 21 times faster than CPU algorithm and achieves performance of 16 GFLOPS in single precision for dense matrices with size 4,096. Such performance proves that our algorithm is practical for real applications.

• Journal of Institute of Convergence Technology
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• v.11 no.1
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• pp.39-42
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• 2021

2차원 유동장내 수직 진동하는 원통의 Von Karman 와열 유동 현상에 대한 진동 주파수 계산 문제는 진동하는 물체의 비정상 공력 해석 연구 검증에 많이 사용하는 고전적 방법이다. 본 연구에서는 오픈소스 OpenFoam 기반의 중첩격자 기법을 사용하여 층류 유동장내의 수직방향 진동하는 원통 주변의 비정상 유동 현상과 원통 벽면에서의 공력 특성 변화를 해석하기 위한 일련의 해석 단계들과 결과를 타 연구그룹과 비교하였다. 원통 형상과 진동에 의한 와열 유동의 주기적 유동 특성과 복잡성 해석의 건전성을 확보하기 위하여 격자와 시간제어에 대한 해의 정확도에 미치는 영향을 평가하였다. 본 연구에서 수행한 해석 방법은 일관성과 신뢰성 있는 해석 결과들 보여주었으며, 향후 보다 실제적인 진동하는 에어 포일의 비정상 공력 해석 연구에 적용 가능함을 확인하였다.

• Journal of Institute of Convergence Technology
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• v.11 no.1
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• pp.25-28
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• 2021

Recently, the fire safety of road tunnels has been important issues in South Korea. However, proper fire safety regulations has not made for road tunnels. Due to geographical challenges in South Korea, road tunnels should be constructed to secure stable traffic flows. In the Guidelines for Installing and Managing Disaster Prevention Facilities of Road Tunnels (NFSC 603), main target vehicles are passenger cars. This guidelines cannot support big fires from larger vehicles such as cargo, oil trucks. In this study, fire safety for a road tunnel in port area was analyzed with fire dynamics theory under cargo truck fire scenario. Sujunsan road tunnel in Busan city was chosen as a target tunnel, which links between Busan port and highways to increase cargo shipping. The results show the limitations of present guidelines (NFSC 603) for road tunnel from large fire situations.

• Proceedings of the Korean Society of Disaster Information Conference
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• 2022.10a
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• pp.391-392
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• 2022

탄소중립도시 실현을 위해 내연기관의 폐지를 주장하고 있지만, 현재 자동차세금 구조를 유지하면서 친환경자동차 목표량을 달성한다면 2020년 세수 16.7조원에서 2050년에는 1.4조원으로 약 15.3조원이 감소될 것으로 추정하고 있다. 따라서, 탄소배출 특성 및 자동차세 현황 등을 분석하여 비연소성 배출가스와 상관성이 높은 차량 중량과 차량가를 기반으로 자동차세 개선방안을 제시하였다.

• Information and Communications Magazine
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• v.24 no.12
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• pp.39-46
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• 2007

초기에 3세대 이동통신망의 IP 멀티미디어 서비스를 위해 개발된 IMS는 현재 All IP 기반의 차세대 통신 환경에서 새로운 서비스의 제공과 유 무선 망의 통합 제어 플랫폼으로 자리잡고 있다. 본고에서는 3GPP에서 이동통신망의 제어를 위해 개발되고, TISPAN의 NGN에 의해 유선망에 적용될 수 있도록 수정 보완 되었으며, ITU-T NGN 구조에도 반영되어 IP 기반의 유무선 통합망에서의 표준 플랫폼이 된IMS의 기술동향을 살펴보고, IMS 망을 이용하여 유 무선 통합 네트워크 환경에서의 통신 방송 융 복합 서비스를 제어하기 위한 통합제어 기술에 대해 기술한다.

• TTA Journal
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• s.104
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• pp.4-5
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• 2006

SW 산업은 빠르게 성장하는 대규모 산업일뿐만 아니라, 다른 산업을 고도화시키고 새로운 산업을 창출하는 기반산업이다. 이러한 SW 산업이 타산업에 미치는 영향은 최근 들어서 더욱 커지고 있는데, 이러한 현상은 정보기기와 서비스 유형이 더욱 다양해지고 융·복합화 됨에 따라서 이들 정보시스템간에 막힘없는(seamless) 통신의 필요성이 커지기 때문으로 이해된다.

• Journal of Digital Convergence
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• v.13 no.8
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• pp.289-294
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• 2015

This paper proposes an autonomous machine learning method applicable to the BCI(Brain-Computer Interface) is based on the self-organizing Kohonen method, one of the exemplary method of unsupervised learning. In addition we propose control method of learning region and self machine learning rule using an interactive function. The learning region control and machine learning was used to control the side effects caused by interaction function that is based on the self-organizing Kohonen method. After determining the winner neuron, we decided to adjust the connection weights based on the learning rules, and learning region is gradually decreased as the number of learning is increased by the learning. So we proposed the autonomous machine learning to reach to the network equilibrium state by reducing the flow toward the input to weights of output layer neurons.

• Journal of Digital Convergence
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• v.14 no.7
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• pp.93-102
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• 2016

The purpose of this study is to examine the effects of the Mobile Smart-Work IT resources on the work efficiency based on moderating effects of the perceived usefulness in the Resource Based View. The study has academic meanings and practical implications that studied widely based on moderating effects of the perceived usefulness through the Hierarchical regression furthermore on the existing study on hypothesis by standard multiple regression. The results showed that IT Infrastructure in the Mobile Smart-work IT resources by moderating effects of the perceived usefulness was found to bring positive effect on individual work efficiency and teamwork efficiency. On the other hand Business Application was found to bring positive effect on teamwork efficiency. Therefore, we expect that business firm and employees actively use the effects of the perceived usefulness with the trust that Mobile Smart-work IT resources bring positive effects on the work efficiency. It can improve this work efficiency and lead to strengthening the firm competitiveness.

• Journal of Digital Convergence
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• v.14 no.5
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• pp.149-156
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• 2016

In today's rapidly-changing business context with technology convergence among various fields, new technology development and technology commercialization capabilities are very important to the survival and growth of small and medium-sized enterprises (SMEs). This study develops the research model based on the open innovation perspective and empirically tests it by using 2,000 data from SMEs in South Korea. The empirical analysis result reveals that SMEs' external technology collaboration network and external information network diversities have positive effects on their technology commercialization capability, and these effects are fully mediated by their new technology development capability. Based on these results, the study provides meaningful implications especially in terms of SMEs' managers who pursue entrepreneurship.