• ETRI Journal
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• v.28 no.4
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• pp.525-528
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• 2006

In this letter, we present a design of a single chip video decoder called advanced mobile video ASIC (A-MoVa) for mobile multimedia applications. This chip uses a mixed hardware/software architecture to improve both its performance and its flexibility. We designed the chip using a partition between the hardware and software blocks, and developed the architecture of an H.264 decoder based on the system-on-a-chip (SoC) platform. This chip contains 290,000 logic gates, 670,000 memory gates, and its size is $7.5\;mm{\times}7.5\;mm$ (using 0.25 micron 4-layers metal CMOS technology).

• Journal of the Korea Convergence Society
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• v.9 no.8
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• pp.199-209
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• 2018

This paper investigated the impact of consultant capability, CEO commitment, and firm size on consulting performance. And we analyzed whether the CEO commitment factor showed mediated effect in the causal relationship between consultant capability and consulting performance, and analyzed that firm size showed the moderation effect on the relationship of Consultant capability, CEO commitment, and Consulting performance. The results of the analysis showed that the consultant knowledge had a significant effect on the CEO commitment and the CEO commitment had a significant effect on the consulting performance. CEO commitment showed that mediated the influence of consultant capability on the consulting performance. And as a result of the moderation effect test, there were significant differences in the size of firms depending on the path according to the group of large companies and SMEs.

• Journal of the Korea Convergence Society
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• v.9 no.8
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• pp.343-353
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• 2018

The purpose of this study was to identify the effects of clinical nurses' emotional labor and professionalism, and verify the moderating effects of social support on nursing performance. A survey was conducted with 230 nurses working in general hospitals using self-reporting questionnaires in Seoul. It was found that the number of years in current department, professionalism, social support, and deep acting of emotional labor were affecting nursing performance. Social support perceived by clinical nurses moderates the deep acting of emotional labor and it positively influenced nursing performance. Results of this study indicate that nurse managers should focus on increasing nurses' professionalism and social support, and create working environments where nurses do more deep acting of emotional labor in order to increase nursing performance. This study contribute nurse managers to recognizing the impact of emotional labor, professionalism, and social support on nursing performance. Practical programs for increasing clinical nurses' professionalism, social support and decrease emotional labor is required to be developed in further research.

• Journal of Digital Convergence
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• v.16 no.6
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• pp.63-73
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• 2018

The purpose of this study is to investigate the influence of KMS(Knowledge Management System) on the performance of KMS by setting the factors affecting KMS 's management performance as knowledge information factor and management factor. And the moderating effect of evaluation and compensation on knowledge information factor, management factor and management performance. As a result of the analysis, it was analyzed that the knowledge information factor set by the knowledge adaptability, the reliability of knowledge information, and knowledge management process affects the definition of management performance. Among the management factors, organizationalization and cooperation factors influence definition Respectively. In the results of verifying whether assessment and compensation play a moderating role, it is found that knowledge compatibility of knowledge information factor, reliability of knowledge information, support of knowledge management process, knowledge sharing activity of management factor, cooperation has played a moderating role in business performance.

• Journal of Convergence for Information Technology
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• v.10 no.2
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• pp.9-14
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• 2020

This study studied on innovation and R&D performance measurement, and especially the dimensions of measuring performance. The Empirical study is based on the opinions of 169 experts from a R&D group with a career for SMBA's support. The results reveal that what the most optimal and appropriate measures of project-level success are will depend on the type of innovation involved and the development project type and the relatively low significance of financial measures for innovation projects in general. Additionally, measurability is not major significance factor for selecting measures, whereas the level of innovativeness were to be selected as important factor. The roles of the evaluators are affected. It is expected to help make government policy for R8D performance evaluation.

• Journal of Convergence for Information Technology
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• v.7 no.5
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• pp.169-175
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• 2017

Accounting information systems (AIS) capture and process accounting data and provide valuable information for decision makers. However, in a rapidly changing environment, continual management of the AIS is necessary for organizations to optimize performance outcomes. I suggest that building a dynamic AIS capability enables accounting process and organizational performance. Using the dynamic capabilities framework (Teece 2007). I propose that a dynamic AIS capability can bedeveloped through the synergy of three competencies: having (1) a flexible AIS, (2) a complementary business intelligence system, and (3) accounting professionals with IT technical competency. Using survey data, I find evidence of a positive association between a dynamic AIS capability, accounting process performance, and overall firm performance. The results suggest that developing a dynamic AIS resource can add value to an organization. This study provides guidance for organizations looking to leverage the performance outcomes of their environment.

• Journal of radiological science and technology
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• v.44 no.3
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• pp.261-267
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• 2021

As the number of Coronavirus Disease-19 (COVID-19) patients increases in a global pandemic situation, the usefulness of mobile computed tomography (CT) is gaining attention. Currently, mobile CT follows the basic safety and essential performance evaluation criteria of whole-body or limited-view X-ray CT in order to obtain device approval and evaluation in the Republic of Korea. Unlike stationary CT, mobile CT is not operated in shielded areas but rather areas such as intensive care units, operating rooms, or isolation rooms. Therefore, it requires a different basic safety and essential performance evaluation standard than stationary CT. In this study, four derived basic safety evaluation criteria related to electrical, mechanical, and radiation safety were included (dose indication test, protection against stray radiation, safety measures against excessive X-rays, half-value layer measurement); and seven essential performance evaluation criteria were included (tube voltage accuracy, mAs accuracy, radiation dose reproducibility, CT number of water, noise, uniformity, and spatial resolution); total eleven basic safety and essential performance evaluation criteria were selected. This study aims to establish appropriate basic safety and essential performance evaluation criteria for simultaneously obtaining images with diagnostic value and reducing the exposure of nearby patients, medical staff, and radiologic technologists during the use of mobile CT.

• Journal of the Korea Convergence Society
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• v.12 no.11
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• pp.155-160
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• 2021

This study analyzed the awareness and performance of physical therapists' infection control using IPA. The four areas were divided into handwashing, personal management, Treatment room environment management, and infection control education, and a survey was conducted on awareness and practice. General characteristics were analyzed for frequency, and recognition and performance were analyzed through paired t-test and Pearson's correlation. Handwashing was both high and infection, control education had high performance, but low awareness. The performance of Treatment room environment was high, but the awareness was low, and personal management was both low. Therefore, based on this study, there is a need for a strategy to improve the awareness of infection control education, a strategy to improve performance in the treatment room environment, and a strategy to improve both performance and awareness in Personal management.

• Journal of the Korea Convergence Society
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• v.12 no.5
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• pp.337-344
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• 2021

To determine the impact of long-term social distancing and isolation from COVID-19 on the area of adult occupational performance, targeting adults in their 20s to 60s distributed nationwide for 2 months from November 2020 to December 2020. A questionnaire based on the occupational therapy execution system was constructed and investigated. A total of 270 people responded to the questionnaire, and the survey method was an online questionnaire. As a result of the analysis, there were significant differences in both occupational performance and satisfaction before and after COVID-19 in 33 (75%) of 45 items in 9 areas of the occupational performance area. There were significant changes in performance and satisfaction by age group in all age groups in health management, social participation, leisure, and work. In particular, those in their twenties showed the greatest change in performance and satisfaction in the leisure domain, while those in their 30s and 60s showed the greatest change in both the performance and satisfaction in the leisure domain. Along with these changes, the survey subjects recognized that their occupational performance and satisfaction were lower than before COVID-19 was a problem and confirmed that they are willing to improve. As COVID-19 is still a pandemic, it is necessary to involve experts in each area and follow-up studies to improve the differences by occupational performance area and age, which have changed due to long-term social distancing and isolation.

• International journal of advanced smart convergence
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• v.9 no.2
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• pp.68-75
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• 2020

Non-orthogonal multiple access (NOMA) has gained the significant attention in the fifth generation (5G) mobile communication, which enables the advanced smart convergence of the artificial intelligence (AI), the internet of things (IoT), and many of the state-of-the-art technologies. Recently, correlated superposition coding (SC) has been proposed in NOMA, to achieve the near-perfect successive interference cancellation (SIC) bit-error rate (BER) performance for the stronger channel users, and to mitigate the severe BER performance degradation for the weaker channel users. In the correlated SC NOMA scheme, the stronger channel user BER performance is even better than the perfect SIC BER performance, for some range of the power allocation factor. However, such excessively good BER performance is not good for the user-fairness, i.e., the more power to the weaker channel user and the less power to the stronger channel user, because the excessively good BER performance of the stronger channel user results in the worse BER performance of the weaker channel user. Therefore, in this paper, we propose the power splitting to establish the user-fairness between both users. First, we derive a closed-form expression for the power splitting factor. Then it is shown that in terms of BER performance, the user-fairness is established between the two users. In result, the power splitting scheme could be considered in correlated SC NOMA for the user-fairness.