• 대한안전경영과학회지
• /
• 제12권1호
• /
• pp.169-178
• /
• 2010

This study was motivated by the attempt to examine from versatile viewpoints the structural relationship between industrial environment, technology orientation and performances which are all factors related to technical innovation of small and medium-sized companies. In this regard, a survey was conducted to investigate the late industrial environment that could have direct and indirect impacts on the technology orientation of small and medium industry and, based on the survey, an analysis was carried out to determine the effects of its technology orientation on the performances in the technological innovation and management. The outcomes of the analysis could be summed up as follows: First, the factors of technology orientation turned out to have influence on those of industrial environment, which suggests the needs for the small and medium industry to consider the factors of industrial environment at multiple levels. Second, the technology orientation was found to influence the performances of technology innovation and management of small and medium industry in a structural manner, which signifies that the small and medium sized companies have to make strategic decision about the preference in the area of technology innovation and management performances.

• 한국자동차공학회논문집
• /
• 제5권4호
• /
• pp.21-28
• /
• 1997

The vehicle handling performances have a close relation with the driver's safety. And the CAT(Computer aided testing) system has been introduced as a powerful tool for improving the handling performances. In this study, a CAT system for effectively measuring and analysing the handling performances is developed based on the windows GUI(Graphic user interface) environment. Especially, in order to derive a lot of significant handling performance parameters from a series of proving ground tests, the CAT system has various functions related to real time measurement, time domain analysis, frequency domain analysis, steady state analysis and so on.

• 한국축산시설환경학회지
• /
• 제19권2호
• /
• pp.141-148
• /
• 2013

This study was conducted to evaluate the effect of different housing systems on the performances of sows and their piglets during gestation. A total of 90 sows (Landrace ${\times}$ Yorkshire) were employed into 3 experimental farms to give 3 treatments, stall housing, group housing in either slatted floor or litter floor. Individual sow was used as an experimental unit. Group housed sows were fed with electronic sow feeder during gestation. Performance measures were taken on sows and piglets. Back-fat thickness and body condition score of sows were not affected by housing systems for pregnant sows. There was no difference of estrus interval of pregnant sows between housing systems. The lower number of still-birth was observed in group housing type. The number of wounded sows in slatted floor was remarkably increased compared with sows in litter floor. This study showed that the housing systems could fairly impact sow and piglet performances.

• 한국콘텐츠학회논문지
• /
• 제22권8호
• /
• pp.307-317
• /
• 2022

본 연구는 사회적기업을 대상으로 사회적기업의 사회적가치 실현노력이 사회적기업의 성과에 미치는 영향 및 사회적 지원환경의 매개효과를 분석하였다. 분석을 위하여 사회적기업진흥원에서 사회적기업을 대상으로 실시한 '사회적경제 지역생태계 구축을 위한 지역자원 조사' 공개데이터 자료를 이용하여 통계 분석을 실시하였다. 분석결과 사회적기업의 사회적가치실현노력은 사회적기업의 사회적 성과와 경제적성과에 직접적인 영향을 미치는 것으로 나타났다. 특히 기업의 외부지원환경은 사회적가치실현 노력과 사회적 성과 간 각각 매개효과가 있는 것으로 나타났다. 그러나 Process for SPSS 4.0을 통한 매개효과의 통계적 유의성 검증결과, 외부지원환경은 사회적 가치실현노력과 사회적 성과 간 매개효과가 유의미했으나 경제적 성과에서는 매개효과가 비유의적이었다. 이로써 사회적 가치실현노력이라는 사회적자본이 사회적 성과에 미칠 수 있는 외부지원환경의 역할을 기대할 수 있을 것으로 보인다.

• KSII Transactions on Internet and Information Systems (TIIS)
• /
• 제15권3호
• /
• pp.911-931
• /
• 2021

Recently, most cloud services use Docker container environment to provide their services. However, there are no researches to evaluate the performance of communication libraries for multi-GPU based distributed deep learning in a Docker container environment. In this paper, we propose an efficient communication architecture for multi-GPU based deep learning in a Docker container environment by evaluating the performances of various communication libraries. We compare the performances of the parameter server architecture and the All-reduce architecture, which are typical distributed deep learning architectures. Further, we analyze the performances of two separate multi-GPU resource allocation policies - allocating a single GPU to each Docker container and allocating multiple GPUs to each Docker container. We also experiment with the scalability of collective communication by increasing the number of GPUs from one to four. Through experiments, we compare OpenMPI and MPICH, which are representative open source MPI libraries, and NCCL, which is NVIDIA's collective communication library for the multi-GPU setting. In the parameter server architecture, we show that using CUDA-aware OpenMPI with multi-GPU per Docker container environment reduces communication latency by up to 75%. Also, we show that using NCCL in All-reduce architecture reduces communication latency by up to 93% compared to other libraries.

• 한국콘텐츠학회논문지
• /
• 제21권10호
• /
• pp.149-162
• /
• 2021

본 연구는 발레공연의 서비스 품질(작품, 가격, 물리적 환경)이 만족, 신뢰, 재 관람의도에 어떠한 영향을 미치는지를 실증적으로 분석하고자 했다. 또한, 만족 및 신뢰가 재 관람의도에 미치는 영향관계도 함께 검정하고자 했다. 본 연구의 대상은 최근 2년(2019년 ~ 2020년) 간 발레공연을 공연장에서 실제로 관람한 경험이 있는 일반 성인남녀(미국인)다. 따라서 본 연구는 2020년 8월 중, 1곳의 글로벌 리서치 전문기관을 통해서 온라인 설문조사를 실시했고, 유효한 240명을 수집 완료했다. 수집된 유효 표본으로, SmartPLS 통계 프로그램을 이용하여 구조방정식 모형분석을 실시했고, 분석결과는 다음과 같다. (1)발레공연의 서비스 품질 중 작품은 만족에 통계적으로 유의한 정(+)의 영향을 미치는 것으로 나타났다. 그러나 가격, 물리적 환경은 만족에 통계적으로 유의한 영향을 미치지 못했다. (2)작품은 신뢰에 통계적으로 유의한 정(+)의 영향을 미치는 것으로 나타났다. 그러나 가격, 물리적 환경은 신뢰에 통계적으로 유의한 영향을 미치지 못했다. (3)만족은 신뢰에 통계적으로 유의한 정(+)의 영향을 미치는 것으로 나타났다. (4)작품, 가격, 물리적 환경은 재 관람의도에 통계적으로 유의한 영향을 미치지 못했다. (5)만족은 재 관람의도에 통계적으로 유의한 정(+)의 영향을 미치는 것으로 나타났다. (6)신뢰가 재 관람의도에 통계적으로 유의한 정(+)의 영향을 미치는 것으로 나타났다.

• 대한전기학회논문지:시스템및제어부문D
• /
• 제52권2호
• /
• pp.85-92
• /
• 2003

In this paper, we propose a method to evaluate performances of mobile personal robots. A set of performance measures is proposed and the corresponding evaluation methods are developed. Different from industrial manipulators, personal robots need to be evaluated with its mobility, navigation, task and intelligent performance in environments where human beings exist. The proposed performance measures are composed of measures for mobility including vibration, repeatability, path accuracy and so on, as well as measures for navigation performance including wall following, overcoming doorsill, obstacle avoidance and localization. But task and intelligent behavior performances such as cleaning capability and high-level decision-making are not considered in this paper. To measure the proposed performances through a series of tests, we designed a test environment and developed measurement systems including a 3D Laser tracking system, a vision monitoring system and a vibration measurement system. We measured the proposed performances with a mobile robot to show the result as an example. The developed systems, which are installed at Korea Agency for Technology and Standards, are going to be used for many robot companies in Korea.

• 에너지공학
• /
• 제28권4호
• /
• pp.61-75
• /
• 2019

본 논문은 한국의 환경기업 중 R&D를 수행하고 있는 기업들의 자원투입이 경영성과에 미치는 직접적인 영향을 살펴보고, 이어 제품·공정·조직·마케팅 등에서의 혁신이 자원투입과 경영성과의 관계를 매개하고 있는지 간접적인 경로와 영향을 분석하였다. 이를 위해 한국 환경기업을 대상으로 설문조사를 실시하였으며, R&D 조직을 보유한 137개 기업의 응답 자료를 대상으로 SPSS와 Process Macro를 이용하여 매개분석을 실시하였다. 분석의 결과, 첫째, 한국 R&D수행 환경기업의 자원투입은 경영성과에 직접적으로 긍정적인 영향을 미치고 있다. 둘째, 자원투입은 혁신을 매개로 하는 간접적인 경로로 경영성과에 긍정적인 영향을 미치고 있다. 셋째, 혁신 유형 중에서는 유일하게 조직혁신의 매개역할이 검증된 반면, 제품혁신, 공정혁신, 마케팅혁신의 매개효과는 나타나지 않았다. 이에 따른 정책적 시사점으로는 첫째, 한국 R&D수행 환경기업들에서 혁신이 자원투입과 경영성과를 연결하는 중요한 매개체로 분석됨에 따라, 기업이 혁신을 통해 경영성과를 제고할 수 있도록 관련 정책을 강화할 필요가 있다. 둘째, 특히 기업들이 조직혁신을 매개로 경영성과를 높이고 있는 점을 반영하면서, 제품·공정·마케팅 등에 걸친 혁신이 경영성과로 이어질 수 있도록 지원정책을 세심하게 시행할 필요가 있다. 본 연구는 기업의 실질 통계 확보가 어려워 설문을 통해 분석한 점에서 한계가 있으며, 향후 환경산업혁신체제에 대한 추가적인 연구가 필요하다.

• 한국축산시설환경학회지
• /
• 제5권2호
• /
• pp.87-92
• /
• 1999

Three types of commercial broiler farms were surveyed to evaluate the effects of housing and production systems on environment and performances in broiler production. Environment condition of broiler house was better in windowless type than vinyl house. Ammonia, carbon dioxide and dust in vinyl house was 28ppm, 2,000ppm, 50.5CPM, respectively. Mortality was higher in vinyl house than that of widowless broiler house. Body weights at the age of 39 days were 1,551g, 1,607g and 1,620g of vinly house, open-sided broiler house and windowless broiler house, respectively. The incidence of abnormal carcass from the vinyl house was higher than those of the others.

• 전기전자학회논문지
• /
• 제18권4호
• /
• pp.502-508
• /
• 2014

This paper has reviewed the performances of various AGCs which can be adopted in IEEE802.11p modems. IEEE802.11p, a high speed mobile communication standard for vehicles, requires high performance signal detector since the channel impulse responses are varied rapidly in time. In order to select the optimal signal detector, we simulated the performances of three detection methods. One is using RSSI signal, the other is using RSSI signal and I/Q signal, and the third is using I/Q signal through the Monte Carlo simulation. We evaluated the performances of the algorithms using our own system based on MAX 2829 transceiver(MAXIM $Integrated^{TM}$) in a real vehicular environment. As a result, the experiment using Fully I/Q signal derives the most excellent performance with the lowest minimum receiver sensitivity, packet error rate (PER) and false alarm rate (FAR).