• Journal of Broadcast Engineering
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• v.8 no.2
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• pp.116-125
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• 2003

In this paper, we introduce a newly developed DSP module and Software which Is applicable to DTV-OCR and is designed to cancel the interference signal. In general, RF repeater has problems of system oscillation and signal Quality degradation due to feedback interference signal coming from transmit antenna. In this paper, we demonstrate newly developed DSP HW and SW module for cancelling the interference signal by investigating the field data measured through a RF repeater. Also, the structure and signal processing method for non-regenerative repeater system based on the newly developed DSP HW and SW module is illustrated as well.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2009.05a
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• pp.565-568
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• 2009

This paper is a derivation of test item and a method evaluation about induced printer toner Software in enterprise.

• Proceedings of the KIPE Conference
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• 2010.07a
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• pp.77-78
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• 2010

As the maximum power operating point(MPOP) of photovoltaic(PV) power systems alters with changing atmospheric conditions, the efficiency of maximum power point tracking(MPPT) is important in PV power systems. Moreover, grid-connected PV system occurs some problems such as voltage inequality and harmonics. Therefore, this paper presents the results of a grid-connected PV system modeling by PSIM simulator and investigates the influence on the grid-connected PV system from aspect of power quality, i.e. voltage drop. This paper includes four MPPT algorithms; Perturbation & Observation(P&O), Improved P&O, Increment Conductance(Incond), Hysterisis simulated with irradiation changing.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2014.10a
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• pp.457-460
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• 2014

As to the rapid development of mobile technology, the era of 1-person 1-smart phone has come. Also, the application of smart phone became the part of our life. Especially mobile RPG(Role Playing Game) has the biggest market and the largest number of users. There could be no precise quality assessment result, if quality evaluation model of PC RPG game were applied to the mobile RPG. Thus, it is time to focus on new quality evaluation model for mobile RPG with the great reflection of smart phone attributes. In this paper, based on ISO/IEC 9126, the international standard of software quality, quality evaluation elements for mobile RPG were deducted. Then metrics for validation of elements were redefined and new quality evaluation model was proposed.

• Proceedings of the Korea Information Processing Society Conference
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• 2011.04a
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• pp.1398-1400
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• 2011

2000년 초에 PC간 인터넷을 통한 음성통화를 시작으로 최근에는 스마트폰의 전용 애플리케이션까지 VoIP 기반의 음성통화 서비스가 발전해왔다. 이에 따라, VoIP를 통한 외부 공격 및 침입에 대한 사례가 발생되고 이를 해결하기 위한 보안 소프트웨어들이 나오기 시작하였다. 일반적으로 VoIP기반의 소프트웨어에 대한 품질 기준은 사용자의 통화품질이 최우선 이었다. 하지만, GS시험.인증 과정을 통해 VoIP 보안 소프트웨어가 통화품질에는 직접적인 영향을 미치지는 않지만 전체 운영 시스템에 미치는 영향을 확인하고, 시험 중 발생한 문제에 대한 해결 방안 제시를 통해 VoIP의 품질을 향상시킬 수 있었다.

• Proceedings of the Korea Information Processing Society Conference
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• 2008.11a
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• pp.496-499
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• 2008

공공부분 S/W사업은 분리발주가 원칙이고 일괄발주가 예외지만 현재 많은 공공부분 S/W사업은 일괄 발주 사업으로 진행되고 있다. 일괄발주는 SI업체가 S/W업체도 선택하여 입찰 및 개발하기 때문에 발주자가 원하는 품질 좋은 S/W를 선택할 수 없고, 발주자가 S/W를 업그레이드 및 확장할 때 SI업체에 의존하게 되는 단점이 있다. 이런 단점을 보완하고, S/W분리발주를 활성화시키기 위해 지식경제부(구 정보통신부)에서는 S/W분리발주 매뉴얼을 작성하여 보급 및 교육을 하고 있으며, 발주처에서는 품질이 우수한 S/W를 선택하기 위한 S/W분리발주 BMT를 공인된 시험기관인 한국정보통신기술협회(TTA) SW 시험인증센터에서 BMT를 실시하고 있다. 본 논문은 위협관리시스템(TMS) S/W분리발주 BMT를 공인된 국가 시험인증기관인 한국정보통신기술협회(TTA) SW시험인증센터에서 수행한 사례를 기술하였다

• Journal of Internet Computing and Services
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• v.21 no.1
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• pp.57-70
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• 2020

This study examines the subjective perception of software developers on happiness at work through the Q-sort methodology. Analysis of 63 respondents revealed four types happiness at work with highly differentiated characteristics: 'stability of work oriented', 'defiant self-driven, technology-oriented', 'realistic professionalism oriented', and 'genuinely technology and task-immersion oriented'. The 'defiant self-driven, technology-oriented' and 'genuinely technology and task-immersion oriented' types are interested in latest ICT and consider recognition of one's professionalism as well as self-realization result in happiness at work. On the other hand, the 'stability of work oriented' and 'realistic professionalism oriented' types did not pay much attention to one's growth of technical career but emphasized salary, welfare benefits and job promotion as the most important factors in happiness at work. Today, extraordinary SW developers are a key factor to acquire industrial competitiveness. Nations and corporations should prepare realistic ways to promote overall happiness at work by accurately understanding the varying characteristics and predisposition of domestic ICT personnel. In Korea, it is found that there is a shortage of 'genuinely technology and task-immersion oriented' SW developers. In order to secure national and industrial competitiveness in the era of the Fourth Industrial Revolution, creation of work ecosystem to promote high levels of happiness at work is required to secure quality software production and pride as an ICT professional.

• Journal of Dairy Science and Biotechnology
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• v.30 no.1
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• pp.23-30
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• 2012

This study was carried out to investigate the quality characteristics of yoghurt with varying contents of Sanmeoru (Vitis amurensis Ruprecht) wine (SW). Yoghurts were fermented with 2 kinds of lactic acid bacteria (Streptococcus thermophilus and Lactobacillus bulgaricus; Yo-$MIX^{TM5}505$, Danisco, Denmark). The changes in quality characteristics were investigated during fermentation and storage, and anthocyanin composition was analyzed after fermentation. The pH decreased in all treatments, while titratable acidity and viscosity gradually increased during fermentation. The viscosity of the yoghurt with 5.0% cultured SW added was higher than in other groups. The viable counts of lactic acid bacteria gradually increased during fermentation. The sample of the 5.0% cultured SW-yoghurt was higher than that of the other groups. The pH slowly decreased during the storage period; this was lower in the control yoghurt than in the yoghurts containing SW, and the changes of titratable acidity in the samples containing 5.0% and 30.0% cultured SW were lower than that in the yoghurt containing 1.0% cultured SW and in the control. The change in viscosity and number of viable cells during storage was higher in the yoghurts containing SW than in the control group. The levels of anthocyanin increased with the SW content in the yoghurt. Sensory scores for taste of the yoghurt with 1.0% added SW was significantly higher than for the other groups. Yoghurt with added SW kept at $4^{\circ}C$ for 12 days retained its quality characteristics fairly well.

• Proceedings of the KAIS Fall Conference
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• 2009.12a
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• pp.798-801
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• 2009

인구의 고령화와 정보통신 기술의 발전이 맞물리면서 의료비 지출에 대한 절감의 필요성과 편리한 의료 서비스를 이용하고자 하는 소비자의 욕구, 병원에 구축된 IT인프라의 효과를 극대화 시키고자하는 공급자의 욕구 등이 부합되면서 그 기반이 조성된 것으로 볼 수 있다. 본 연구에서는 u-health 소프트웨어의 분야의 기반 기술을 조사하고 u-health 소프트웨어 시장과 표준화 동향을 조사하며 u-health 소프트웨어 신뢰성의 품질평가 메트릭을 개발하였다.

• Proceedings of the Korea Information Processing Society Conference
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• 2012.04a
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• pp.1163-1166
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• 2012

프로젝트의 성공을 위해서는 프로젝트 품질을 관리해야 한다. 본 논문에서는 중소기업의 프로젝트 품질관리 개선을 위해 품질관리 국제모델과 감리프레임워크를 참고하여 개발한 프로젝트 품질관리 프레임워크를 통해 품질관리 개선사례를 제시한다. 제시된 품질관리 프레임워크를 23개 중소기업에 적용한 사례를 살펴보고 품질관리를 통해 프로젝트 목표달성에 기여했음을 보인다.