• The Journal of Korean Institute of Communications and Information Sciences
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• v.33 no.10C
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• pp.805-812
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• 2008

H.264 technology is considered as the heart of the next-generation video codec standard. Europe and other countries have actually specified H.264 technology as the video codec standard for HD broadcasting. However, due to the complexity of algorithm, it is still a difficult job to implement HD-level H.264 decoders in real-time software. In this paper, I have restricted a part of the decoding process, in order to implement an H.264 software video decoder which guarantees a real-time operation, and suggest an H.264 decoder that adaptively selects the algorithm to minimize image degradation. Performance of the suggested H.264 decoder was compared and verified through a PC simulation. As a consequence, when the suggested decoder was used in an environment where real-time decoding was difficult, it has achieved the minimal image degradation as well as real-time decoding in most cases.

• Safety and Health at Work
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• v.9 no.2
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• pp.224-231
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• 2018

Background: Organizations are pursing complex and diverse aims to generate higher profits. Many workers experience high work intensity such as workload and work pressure in this organizational environment. Especially, psychological burden is a commonly used term in workplace of Republic of Korea. This study focused on defining the psychological burden from the perspective of occupational safety and health and tried to develop a scale for psychological burden. Methods: The 48 preliminary questionnaire items for psychological burden were prepared by a focus group interview with 16 workers through the Copenhagen Psychosocial Questionnaire II and Mindful Awareness Attention Scale. The preliminary items were surveyed with 572 workers, and exploratory factor analysis, confirmatory factor analysis, and correlation analysis were conducted for a new scale. Results: As a result of the exploratory factor analysis, five factors were extracted: organizational activity, human error, safety and health workload, work attitude, and negative self-management. These factors had significant correlations and reliability, and the stability of the model for validity was confirmed using confirmatory factor analysis. Conclusion: The developed scale for psychological burden can measure workers' psychological burden in relation to safety and health. Despite some limitations, this study has applicability in the workplace, given the relatively small-sized questionnaire.

• Journal of the Korea Safety Management & Science
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• v.14 no.3
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• pp.245-257
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• 2012

Business environment, competition among firms in recent years, diverse and fragmented by the symbol of the consumer has become very complex and intense. Nevertheless, for the best performance of firms differentiated their company strives to have unique core competencies. In this study, reviewing the internal customer support activities and existing research on market orientation and then how it affects the future strategy for the internal customer support activities. Through the results of this study, first, to appear understanding of the effect of education and training to customers in enterprise-wide, strategic plan through competitor analysis, improved communication between departments, etc need to design to be effective in performance of company in a long term when in planning and training for employees such as job training, service training and training for improving service mind. Second, employment stability and internal communications to the employee's customer orientation showed no significant affect. This is considered for employees due to lack of fear or anxiety, so the employer could focus on his role in the current organization willing to participate actively for goals of the organization. Finally external customer orientation in the employee's customer orientation did not affect the analysis results which is appeared to in companies are constantly communicating with employees through the company's position and the difference between the employee's position is necessary to look for ways to narrow down.

• Journal of the Korea Society of Computer and Information
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• v.13 no.1
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• pp.1-10
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• 2008

In order to high-performance data Processing, effective resource selection is needed since grid resources are composed of heterogeneous networks and OS systems in the grid environment. In this paper. we classify grid resources with data properties and user requirements for resource selection using a decision tree method. Our resource selection method can provide suitable resource selection methodology using classification with a decision tree to grid users. This paper evaluates our grid system performance with throughput. utilization, job loss, and average of turn-around time and shows experiment results of our resource selection model in comparison with those of existing resource selection models such as Condor-G and Nimrod-G. These experiment results showed that our resource selection model provides a vision of efficient grid resource selection methodology.

• Journal of Korean Library and Information Science Society
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• v.51 no.3
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• pp.351-384
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• 2020

The research aims to develop the courses for librarians' continuing education to build up multicultural competencies in library services. In order to achieve the purpose, the study designed the research processes as followings: first, multicultural environment analyses with various materials such as statistics or national reports; second, librarians' and multicultural users' needs analyses of multicultural library services and library works; third, job competency analyses through reviewing related laws, rules, guidelines for library multicultural services, etc. On the basis of the results from the three-step analysis phases, the study deducted the candidate courses for librarians' multicultural education. After testing validity of the candidate courses by expert panels on library multicultural services, the research suggested the final 16 courses and follow-up research projects for designing and implementing the suggested courses in real class fields.

• Journal of Korean Society of Archives and Records Management
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• v.16 no.3
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• pp.131-156
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• 2016

The purpose of this study is to prepare a plan for the improvement of the tasks of record managers in offices of education by understanding the details of their work; analyzing the importance, difficulty, and performance frequency of their tasks; and investigating their working environment and the problems of record management in offices of education. For this purpose, through a literature review and an analysis of related conditions, this study drew out 5 task domains and 24 detailed record management tasks in offices of education. To investigate the level of importance, difficulty, and performance frequency of the drawn-out task domains and task factors, this study conducted a questionnaire survey on record managers working in offices of education and analyzed the survey results using the IPA technique by crossing the level of importance, difficulty, and performance frequency. Based on the survey results, to improve the tasks of record managers in offices of education, and strengthen their task competency, a plan for improvement was suggested.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.15 no.6
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• pp.181-186
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• 2015

With the rapid growth of semiconductor technologies, small-sized devices with powerful computing abilities are becoming a reality. As this environment has a limit on power supply, NVM storage that has a high density and low power consumption is preferred to HDD or SSD. However, legacy software layers optimized for HDDs should be revisited. Specifically, as storage performance approaches DRAM performance, existing I/O mechanisms and software configurations should be reassessed. This paper explores the challenges and implications of using NVM storage with a broad range of experiments. We measure the performance of a system with NVM storage emulated by DRAM with proper timing parameters and compare it with that of HDD storage environments under various configurations. Our experimental results show that even with storage as fast as DRAM, the performance gain is not large for read operations as current I/O mechanisms do a good job hiding the slow performance of HDD. To assess the potential benefit of fast storage media, we change various I/O configurations and perform experiments to quantify the effects of existing I/O mechanisms such as buffer caching, read-ahead, synchronous I/O, direct I/O, block I/O, and byte-addressable I/O on systems with NVM storage.

• Journal of Digital Convergence
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• v.14 no.9
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• pp.399-406
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• 2016

This study aimed to identify the level of knowledge, attitude toward the elderly, competence of carers, and the correlation between these variables. Research design employed a cross sectional descriptive study using structured questionnaires. Data were collected from 145 carers who have worked in long term care facilities from June 2014 to September 2014. Descriptive statistics, ANOVA, independent t-test, and Pearson correlation coefficient were performed to identify the relationship among variables. The competence of carers was related to a positive attitude and a higher knowledge of caring for the elderly. Therefore, educational content that considers improvement among carers who have a low level of educational status should be developed. It should require carers to have a positive attitude toward the elderly through improving the job environment in order to increase the quality of long term care.

• Journal of the Korean Crystal Growth and Crystal Technology
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• v.22 no.2
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• pp.105-113
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• 2012

Maintenance training is generally provided to teach employees new knowledge and techniques in order to increase their qualities. It means that the purpose of maintenance training is to increase an employee's knowledge or technique level and to maintain or increase their performance level through continuous training in their field, and the methods, contents and the level of training vary depending on the type of job they perform. Maintenance training is more important for jobs that require continuous technical increases or research, or for professional jobs that continuously require new knowledge and techniques. The purpose of this study is to provide quality service to consumers by responding to the rapidly changing jewelry distribution environment and to quickly and accurately acquire new and advanced jewelry inspection and appraisal techniques, and to contribute to the healthy consumption culture through a general quality increase in the jewelry industry.

• The Research Journal of the Costume Culture
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• v.23 no.2
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• pp.213-227
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• 2015

This study understood what effect was produced on the purchasing decision making of outdoor wear by a shopping orientation, fashion involvement and demographic characteristics offered practical suggestions as to what effect was produced on the store selection criteria, product selection criteria for purchasing decision making in purchasing outdoor wear. This research was conducted through a questionnaire survey, and 397 males in were collected for analysis. The results were as follows. First, shopping orientation group was classified into hedonic shopping orientation group and utilitarian shopping orientation group. And it was classified into high fashion involvement group and low fashion involvement group according to fashion involvement. Product selection criteria were classified into 2 factors such as intrinsic attributes and extrinsic attributes. And store selection criteria were classified into 4 factors such as store atmosphere, store environment, promotion and salesmen. Second, there was partly significant difference in product selection criteria, and store selection criteria between utilitarian shopping group and hedonic shopping group. Third, there was significant difference in product selection criteria and store selection criteria between high fashion involvement group and low fashion involvement group. Finally, there was significant difference in the and according to age, job, and income among demographic characteristics.