• Proceedings of the Korean Information Science Society Conference
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• 2006.10c
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• pp.210-213
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• 2006

데이터품질이 기업의 경쟁력에 영향을 주는 핵심요소임에도 불구하고, 현 정보시스템 현실에서는 데이터품질 저하라는 심각한 상황을 맞고 있다. 데이터품질을 개선시키기 위한 여러 가지 방안들이 논의되고 있지만, 대부분 현상 데이터에 대한 품질 평가 및 개선에 한정되거나, 개선방안의 구체성이 부족하여 실무적 적용에 한계를 갖는다. 본 연구에서는 데이터표준화 개념을 데이터베이스 설계와 병행하여 수행할 수 있도록 구체적인 구현방안과 사례를 제시하였다. 데이터표준화는 각 단위시스템의 데이터에 대한 명칭 및 도메인에 대한 표준원칙을 수립하여 표준데이터를 구축한 후 전체 시스템에 적용하는 방법이다. 본 연구의 구현방안은 표준데이터 구축이 선행되지 않은 경우에도 데이터의 구조적 품질수준이 보장된 데이터베이스 설계를 수행하고자 하는 실무에 기절할 수 있다.

• Proceedings of the Korean Society for Agricultural Machinery Conference
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• 2003.02a
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• pp.192-199
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• 2003

원예작물 중 수박은 연간생산액이 고추 다음으로 7000-8000억원에 달하는 중요한 소득 작목이다. 수박의 내부품질요인에는 숙도, 황대, 공동, 피수박 등이 있는데, 한 포장에서 20%이상 피수박이 발생되게 되면 포전매매의 경우 반값으로 전락하게 될 뿐만 아니라 출하하는데도 문제가 될 수 있다. 수박의 내부품질 판정은 오랜 경험이 있는 숙련자들에 의해 수행되고 있지만 주관적인 요소가 개입되어 객관적인 평가방법과는 큰 차이가 있을 수 있다. 이러한 현실을 고려해 볼 때, 경험과 전문기술 없이도 고품질의 수박을 수확ㆍ선별함으로써 소비자에 대한 상품의 신뢰성을 높이고 품질의 차별화로 생산자의 소득증대를 위해서는 비파괴적으로 내부품질을 판정할 수 있는 기술이 시급히 개발되어야 할 것이다. (중략)

• 한국신재생에너지학회:학술대회논문집
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• 2007.11a
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• pp.345-348
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• 2007

국내 업체인 유니슨에서는 750kW Gearless형 풍력발전기, U50을 개발하였다. 개발된 풍력발전기는 대관령 풍력실증연구단지에 설치되었다. 풍력시스템의 전력품질 측정 및 평가는 계통에 대한 영향을 조사하는데 있어서 중요한 요소이다. 이 논문에서는 전력품질에 대한 국제기준인 IEC61400-21을 적용하여 U50풍력발전기의 전력품질에 대한 데이터 수집 및 수집된 데이터를 통해 U50풍력발전기가 계통에 미치는 전력품질의 영향을 검토하였다.

• Korea Information Processing Society Review
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• v.10 no.2
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• pp.9-21
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• 2003

최근 들어 서비스 가용도(Availability) 만족에 대한 중요성이 인터넷 기반 서비스 및 응용들의 성패에 가장 결정적인 요소 중의 하나로서 인식되고 있다. 이에 따라, 본 기고에서는 서비스 품질(Quality of Service: QoS)을 기존의 성능 향상 관점에서보다는 가용도 증대의 관점에서 다뤄 보고자 한다. 먼저 가용성 품질(Quality of Availability: QoA)이라는 새로운 개념을 소개하고, 가용도를 QoS의 새로운 평가 척도로써 제어 및 관측 가능한 QoS 파라메터로 정의하는 한편, 인터넷 기반 광역 분산 시스템의 특성에 맞는 가용성 정의를 정립해 본다. 특히 Peer-to-Peer (P2P) 시스템 등과 같이 시스템과 사용자 접속의 동적 변화가 잦은 시스템을 대상으로, 복제(Replication) 기술을 이용한 서비스 가용성 품질 향상 문제를 집중적으로 다뤄본다. 이를 위하여 P2P시스템과 복제기반 분산 서비스를 Stochastic그래프로 모델링해보고, 시뮬레이션 공부를 통하여 여러 가지 복제정책(알고리즘)을 대상으로 서비스 가용성 품질 향상정도를 품질 만족과 보장이라는 차원에서 각각 조사해 본다.

• Journal of the Korean Society of Food Culture
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• v.2 no.1
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• pp.71-79
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• 1987

The sensory quality characteristics of 5 different types of traditional Korean cookies, i.e. Yackwa, Gangjung, Sanja, Dasik and Yutgangjung were investigated. A total of 77 questionnaires were collected and over 90 different terms describing the sensory characteristics of Hankwa were appeared, among which 58 terms were explained in Korean Dictionary. The important quality characteristic of Korean cookies were identified from the frequency of the appearance of sensory describing terms. The cookies were stored at room temperature for 10 days in various relative humidity of $0{\sim}68%$, and the changes in the quality characteristics were examined organolleptically by scalar scoring test. The changes in overall acceptance were evaluated by hedonic test. The results were shown by quantitative descriptive analysis(QDA) diagram The QDA diagram could visualize the effects of storage relative humidity on the sensory quality profile of the cookies.

• Journal of Digital Convergence
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• v.15 no.2
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• pp.199-206
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• 2017

Embedded control system is widely spreaded and used in various fields including military defence, aviation, medical, etc. due to extended use of smart phones, connected car, IoT. Increasing examples are introduced where embedded control system that perform their unique role such as smart phone and network system organically configure to create new system. According to this trend, organic interface and reliability of each embedded control system are becoming important evaluation factors. The purpose of this paper is to develop quality evaluation criteria method for automobile embedded system, among the fields that use embedded control systems. In order to satisfy high quality level requirements of automobile embedded control system, we surveyed latest trend of automobile embedded control system, analyzed structure and application technology of embedded control system, to establish quality evaluation criteria and method for automobile embedded control system by referring international standard for software (ISO/IEC 9126), and international standard for electric & electronic products (ISO 26262).

• Journal of KIISE:Software and Applications
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• v.35 no.10
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• pp.608-615
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• 2008

In Knowledge Q&A services where information is created by unspecified users, document quality is an important factor of user satisfaction with search results. Previous work on quality prediction of Knowledge Q&A documents evaluate the quality of documents by using non-textual information, such as click counts and recommendation counts, and focus on enhancing retrieval performance by incorporating the quality measure into retrieval model. Although the non-textual information used in previous work was proven to be useful by experiments, data sparseness problem may occur when predicting the quality of newly created documents with such information. To solve data sparseness problem of non-textual features, this paper proposes new features for document quality prediction, namely text-confidence features, which indicate how trustworthy the content of a document is. The proposed features, extracted directly from the document content, are stable against data sparseness problem, compared to non-textual features that indirectly require participation of service users in order to be collected. Experiments conducted on real world Knowledge Q&A documents suggests that text-confidence features show performance comparable to the non-textual features. We believe the proposed features can be utilized as effective features for document quality prediction and improve the performance of Knowledge Q&A services in the future.

• Journal of KIISE:Software and Applications
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• v.30 no.1_2
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• pp.117-128
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• 2003

Software usability is a characteristic of the software that is decided based on learnability, effectiveness, and satisfaction when it is evaluated. The usability is a main factor of the software quality. A software has to be continuously improved by taking guidelines that comes from the usability evaluation. Usability factors may vary among the different software products and even for the same factor, the users may have different opinions according to their experience and knowledge. Therefore, a usability evaluation process must be developed with the consideration of many factors like various applications and users. Existing systems such as satisfaction evaluation and performance evaluation only evaluate the result and do not perform cause analysis. And also unified evaluation items and contents do not reflect the characteristics of the products. To address these problems, this paper presents a evaluation model that is based on the mental model of user and the problems, this paper presents a evaluation model that is based on the mental model of user and the emotion of users. This model uses evaluation factors of the user task which are extracted by analyzing usage of the target product. In the mental model approach, the conceptual model of designer and the mental model of the user are compared and the differences are taken as a gap also reported as a part to be improved in the future. In the emotional factor approach, the emotional factors are extracted for the target products and evaluated in terms of the emotional factors. With this proposed method, we can evaluate the software products with customized attributes of the products and deduce the guidelines for the future improvements. We also takes the GUI framework as a sample case and extracts the directions for improvement. As this model analyzes tasks of users and uses evaluation factors for each task, it is capable of not only reflecting the characteristics of the product, but exactly identifying the items that should be modified and improved.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.25 no.11
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• pp.1531-1537
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• 2021

The quality of the game can be evaluated by its fun and functional stability. Among them, the quality area for fun is the essence of the game, so it is a very important factor to be considered from the point of view of a game designer. Usually, fun games with high originality and immersion are designed in the early stages of development, such as idea generation and concept setting. At this time, making it possible to verify the fun factor of the game has an important influence on the success of the game. In this study, the case of using PIT technique when teaching fun element design to students who are starting to study game design was introduced and the effect was analyzed. It is expected that the PIT technique will be used more actively in the game design education field for high-quality and fun game design.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.33 no.4B
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• pp.232-241
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• 2008

In this paper, for analysing the major factors giving the effect to the quality of video on the multicasting service of IPTV, we construct the lab test network environment similar to the real IPTV service network environment. We measure the quality of video on the multicasting of IPTV generating and increasing the broadcasting traffic on the situation that apply the QoS technique to the test lab network and not apply the QoS technique and then find out the threshold value of factors giving the effect to the quality of video on the multicasting service of IPTV. This paper can be used in basic date for guaranteeing the constant video quality on the multicasting service of IPTV.