• Journal of Korean Society of Industrial and Systems Engineering
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• v.44 no.3
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• pp.50-63
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• 2021

There has been a steady rate of accident in Coal Thermal Power Plants which have relatively higher chance of mortality. However, neither the systematic view of safety management nor the methodology such as safety factors or system requirements are yet to be studied in detail. Therefore, this study aims to propose a methodology to preemptively deal with safety issues and to secure fact focused responsibility in safety. It consists of two main parts. First, the Safety Measurement Index(SMI) with total 50 factors is proposed by analyzing the key factors that contribute to safety accidents based on failure mode and effect analysis (FMEA) and quality function deployment (QFD). To analyze the safety requirements, index presented by major countries and organizations are discussed. Second, main features of intelligent CCTV are studied to determine their relative importance for the framework of Smart Safety Management System (SSMS). Main features are discussed with four technological steps. Also, QFD was held to analyze to analyze how key technologies deal with Quality Measurement Index(QMI). The research results of this study reveal that scientific approaches could be utilized in integrating CCTV technologies into a smart safety management system in the era of Industry 4.0. Moreover, this reasearch provides an specific approach or methodology for dealing with safety management in Coal Thermal Power Plant.

• Journal of Software Assessment and Valuation
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• v.15 no.2
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• pp.9-16
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• 2019

More than 25% of software copyright evaluations commissioned to the Korea Copyright Commission are software completeness-defective evaluations. Most of the existing software completeness-defective evaluation cases were made to ensure that the requirements contained in the contract or customer's desired requirements were implemented and able to run, limited to the functionality of the software. This paper proposes a more systematic and reasonable maturity-correction technique to meet software completeness definitions. The ISO / IEC 9241.10 standard is a design standard for improving software quality. The ISO / IEC 9241.10 standard specifies seven items that must be complied with and requires functional integrity for work and operational integrity for work efficiency. The software completeness-defective methodology presented in this paper complements the existing function's implementation-functioning methodology with completeness evaluation on the quality of software.

• Journal of Advanced Navigation Technology
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• v.28 no.3
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• pp.309-314
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• 2024

Avionics Intercom performs communication between pilot, co-pilot and crews in aircraft. In the case of developing intercom in the aircraft modification development project, additional communication equipment or avionics equipment is configured to link the existing intercom with the headsets. Newly designed intercom needs a configuration that receives an aircraft headset microphone and transmits a microphone signal to the existing intercom, and these signals are required to perform signal quality above a certain level. To satisfy these requirements, microphone transmitter circuit has designed and tested, but quality factors of signal were not suitable. In order to avoid the issue, eliminate transmitter and apply signal bridge circuit considered with load effect, and it meets requirements. In this paper, the test results for the signal quality for each configuration are reviewed.

• Journal of Korean Society for Quality Management
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• v.31 no.1
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• pp.76-89
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• 2003

Recently, CMM have been recognized as a critical factor to validate the competitiveness of software organizations, even if the organizations have already achieved the ISO9001 certification. Furthermore, the new version of ISO9001:2000 is being required instead of ISO9001:1994. Both CMM and ISO9001 have a common point that they pursuit quality improvement for the organizations processes and products. Therefore, it is important to understand the similarities of specific requirements between the two models in software organizations which attempt to employ both of the models. From this background, this paper compares CMM and ISO9001 by considering the versions in 1994 and 2000 of ISO9001. The results of this research are likely to help software organizations ma]fe a decision for a strategy to adopt CMM and ISO9001.

• Journal of Korean Society for Quality Management
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• v.31 no.4
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• pp.127-149
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• 2003

With the rapid change in today's R＆D environment and the enlargement of the expected quality level for R＆D outcomes, it has become increasingly necessary to effectively define the R＆D standard processes tailored for our organization and projects. To meet this needs, we defined the R＆D standard processes based on the standards for systems and software engineering and our traditional work methods and applied them to our ongoing projects. We will improve our defined R＆D standard processes continuously by monitoring of the processes and the feedback of the application results. In this paper, we introduce the R＆D standard processes developed by E Research Institute and the requirements and approaches used for their development. We compare our defined R＆D standard processes with ISO/IEC 15288 which is the first international standard for systems engineering.

• Proceedings of the Safety Management and Science Conference
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• 2006.04a
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• pp.437-445
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• 2006

ISO 9000 is a management standard that provides customers with assurance thu their registered suppliers have a consistent quality system to which they adhere. this paper draws on four sources to show how ISO 9000 can lead to performance improvement. 1)theories of induces innovation and improvisation 2) the literature on ISO 9000 3) a case study of a telecom company. we find that the extent to which ISO 9000 is associated with performance improvement depends on the level of its assimilation, and the degree to which an organization goes beyond the minimal requirements of the standard.

• Asia pacific journal of information systems
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• v.20 no.4
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• pp.81-100
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• 2010

This study investigates the impact of website contents on Internet auction success. Based on the marketing concepts of stimuli, consumer behavior, and product involvement, the research model presents the theoretical relationships between the key factors of website contents and Internet auction performance. This study examines particularly four dimensions of website contents including transaction features, auction-specific features, seller's reputation, and information quality, which are deemed to have significant impact on the Internet auction performance, Each dimension of website contents is hypothesized to have a unique impact on a bidder's decision-making, which may vary depending on the bidder's level of involvement in the product. While transaction and auction-specific features serve as necessary components for successful auctions, a seller's reputation and information quality, as parts of satisfactory requirements, acutely affect bidders' decisions, especially those with high involvement to buy the product through a particular auction site. The outcomes of the analysis, in general, support the proposed model. The study results also provide meaningful Implications on ways in which auction websites can be improved for both sellers and auction service providers.

• Journal of Korea Multimedia Society
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• v.7 no.3
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• pp.399-407
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• 2004

As the number of IP-users are increasing, it is getting so important for service providers to check the state of the current Internet and their service quality by measuring the traffic quality. We describe a general concept of measurement architecture and internet QoS (Quality of Service) parameters, and we review measurement tools. To meet these requirements, we design and implement the Internet traffic management system.

• Proceedings of the KWS Conference
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• 2002.10a
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• pp.430-432
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• 2002

Some confusion in the terminology concerning the weld quality and its assurance seems caused by the different practises currently in use around the world. Qualified welding personnel are not automatically certified personnel. Education and training are the tools to obtain qualification. Flexibility in training and education seems logical and the most cost-effective way to obtain qualified personnel. A third party seems essential for issuing recognised Certificates. Manufacturers of welded products continue to face increased demands and concerns regarding weld quality. The following are the main conditions influencing weld quality: $\bigcirc$ Establishing reliable productions procedures and tests that meet the requirements of established codes and standards. $\bigcirc$ Finding qualified welding personnel capable of reliably carrying out established welding procedures. The issue of hiring and keeping skilled welding personnel has been a crucial consideration for manufacturers worldwide for the past few decades. It will continue to be a concern for decades to come.

• Journal of information and communication convergence engineering
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• v.8 no.3
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• pp.245-250
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• 2010

To support various bandwidth requirements for many kinds of devices such as PC, notebook, PDA, cellular phone, a transcoding proxy is usually necessary to provide not only adapting multimedia streams to the client by transcoding, but also caching them for later use. Due to huge size of streaming media, we proposed the 3 kinds of segmentation - PT-2, uniform, bitrate-based segmentation. And to reduce the CPU cost of transcoding video, we proposed the DQS service policy. In this paper, we simulate the combined our previous two researches that are bitrate-based segmentation and DQS(Degraded Quality Service) policy. Experimental results show that the combined policy outperforms companion schemes in terms of the byte-hit ratios and delay saving ratios.