• Journal of the Korea Safety Management & Science
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• v.12 no.1
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• pp.169-178
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• 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.

• Transactions of the Korean Society of Automotive Engineers
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• v.5 no.4
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• pp.21-28
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• 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.

• Journal of Animal Environmental Science
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• v.19 no.2
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• pp.141-148
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• 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.

• The Journal of the Korea Contents Association
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• v.22 no.8
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• pp.307-317
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• 2022

This study aims to analyze relationship between effect on social value realization efforts and company performances, focusing on the mediating effect of external-support environment. Data for the analysis is collected from open data source from Social Enterprise Promotion Agency. The results of the analysis are, first the social value realization efforts has positive effect on both social and economic outcome of the social enterprises. External-support environment has influence on both social performance and social value realization efforts. Additional analysis to test mediation effect of external-support environment were carried out by statistical software package, Process for SPSS4.0. Mediation effect could be found between social realization efforts and social performances, however, no evidence could be found on economic performance. The result indicates that social value realization efforts as a social capital has influence on social performance mediated by external-support environment.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.15 no.3
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• pp.911-931
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• 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.

• The Journal of the Korea Contents Association
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• v.21 no.10
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• pp.149-162
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• 2021

This study aims to conduct an empirical analysis on the impact of service quality (performance work, price, physical environment) on customer satisfaction, trust and intention to re-attend ballet performances. Another focus of the research is to examine the structural effect of satisfaction and trust on customer's intention to re-attend. This study surveyed 240 adults (Americans) who have physically attended ballet performances from 2019 to 2020. Applying the structural equation modeling analysis using the software SmartPLS, this study investigates 240 valid responses obtained from a global research institute in a mid-August 2020 survey. The findings of the analysis are as follows. (1) Performance work is positively correlated with customer satisfaction, while price and physical environment do not affect customer satisfaction. (2) Performance work is positively correlated with customer trust. However, price and physical environment haven't been observed to affect customer trust. (3) Customer satisfaction is positively correlated with customer trust. (4) Performance work, price and physical environment do not affect customer's intention to re-attend ballet performances. (5) Customer satisfaction is positively correlated with customer intention to re-attend performances. (6) Customer trust is positively correlated with the intention to re-attend performances.

• The Transactions of the Korean Institute of Electrical Engineers D
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• v.52 no.2
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• pp.85-92
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• 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.

• Journal of Energy Engineering
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• v.28 no.4
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• pp.61-75
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• 2019

This article analyzed the direct impact of resource inputs on business performances of Korean environmental companies conducting R&D, and the mediation effects of product-, process-, organization-, marketing-innovations between resource inputs and business performances. We conducted the mediation analysis using SPSS and Process Macro, based on a survey data from the Korean environmental companies. The article found that ① resource inputs have directly had a positive impact on business performances, and ② innovations have mediated them. ③ But among 4 types of innovations, the only mediation effect of organization-innovation has been verified, and the others have not appeared. Considering the above results, the following policy implications can be suggested. ① It is necessary to reinforce related policies so that companies can improve business performances through innovation. ② The government needs to carry out the prudent supporting policies so that innovations in product, process, and marketing can lead to business performances. This article has the limitation of using the survey data, and needs further researches on the sectoral system of innovation for Korean environmental industry.

• Journal of Animal Environmental Science
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• v.5 no.2
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• pp.87-92
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• 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.

• Journal of IKEEE
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• v.18 no.4
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• pp.502-508
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• 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).