• Proceedings of the Korea Information Processing Society Conference
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• 2001.10a
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• pp.465-468
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• 2001

인터넷을 사용하는 인구가 증가함에 따라 그들을 공략하기 위한 여러 형태의 비즈니스 모델이 구현되어 웹 상에서 유무형의 상품 및 서비스에 대한 거래가 활성화 되었다. 또한 통신 기술의 발달로 웹 성능에 대한 신뢰도가 높아져 기존에는 클라이언트/서버 아키텍쳐로 구축하던 기업의 전산 업무 환경을 웹 기반의 분산 환경으로 구축하거나 전환하고 있는 것이 현 소프트웨어 산업계의 추세이다. 이에 따라 웹 어플리케이션의 기능 및 성능을 테스트하고 나아가 품질을 평가하기 위한 제반 기법이 요구되는 상황이다. 국외에서는 이미 산업계를 주축으로 웹 테스팅에 관한 연구가 활발히 진행되어 왔으나 국내에서는 그러한 노력들이 이제 막 착수단계에 있으며, 본 고에서는 웹 어플리케이션의 품질평가 기법 고안을 위해 기반 연구 활동으로서 선행된 웹-어플리케이션의 정의 및 분류체계를 제안하고 있다. 나아가 분류별로 보다 중시되는 품질 속성에 집중하는 방식으로 접근한 품질평가 지침을 제안하고 있다.

• Proceedings of the Korea Information Processing Society Conference
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• 2012.11a
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• pp.1482-1485
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• 2012

연구개발 수명주기의 첫 단계에서 도출되는 요구사항은 수명주기 전 단계 수행의 가이드라인 및 기준이 되는 매우 중요한 요소이다. 본 논문은 표준 및 지침을 분석, 정리하여 국방무기체계 개발을 위한 요구사항의 개발 및 관리 프로세스를 정립하고 이를 제대로 적용할 수 있도록 전산지원도구(DOORS)를 개선한 것을 사례를 들어 보여준다.

• Journal of Information Processing Systems
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• v.15 no.1
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• pp.116-126
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• 2019

In this paper, an improved one-against-one support vector machine algorithm is used to classify multiple power quality disturbances. To solve the problem of parameter selection, an improved particle swarm optimization algorithm is proposed to optimize the parameters of the support vector machine. By proposing a new inertia weight expression, the particle swarm optimization algorithm can effectively conduct a global search at the outset and effectively search locally later in a study, which improves the overall classification accuracy. The experimental results show that the improved particle swarm optimization method is more accurate than a grid search algorithm optimization and other improved particle swarm optimizations with regard to its classification of multiple power quality disturbances. Furthermore, the number of support vectors is reduced.

• Journal of Information Processing Systems
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• v.19 no.6
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• pp.817-829
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• 2023

Variable wireless channel is a big challenge for real-time video applications, and the rate adaptation of realtime video streaming becomes a hot topic. Intra-video coding is important for high-quality video communication and industrial video applications. In this paper, we proposed a novel adaptive scheme for real-time video transmission with intra-only coding over a wireless network. The key idea of this scheme is to estimate the instantaneous remaining capacity of the network to adjust the quality of the next several video frames, which not only can keep low queuing delay and ensure video quality, but also can respond to bandwidth changes quickly. We compare our scheme with three different schemes in the video transmission system. The experimental results show that our scheme has higher bandwidth utilization and faster bandwidth change response, while maintaining low queuing delay.

• Food Science and Preservation
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• v.6 no.4
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• pp.521-529
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• 1999

The high influx of imported fruits into Korea is threatening to price and quality competition of domestic fruits. This investigation was conducted to raise price and quality competition of domestic fruits and to develop new products. The scale of production and processing, amount of processing and new processing technology were discussed. The area of cultivation land as well as the rate of processing is decreasing annually, an item of processing is limited to several kinds. Accordingly in this study, the status of production and manufacturing of some fruits and the new processing technologies such as high voltage pulsed electric fields, high hydrostatic pressure, ohmic heating, membrane separation and microwave treatment have investigated to fruit processing. Consequently, the minimal processing technology has to take advantage of various agricultural products in the food industry.

• 한국정보디스플레이학회:학술대회논문집
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• 2004.08a
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• pp.30-33
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• 2004

Sharp has developed industry's largest high-definition LC TV, Aquos LC-45GDI. In this paper, we discuss its 10-bit signal processing as one important enabler of its excellent picture quality. Utilizing 10 bits signal processing, in combination with full-spec High-Definition panel and "Intelligent Environment Illumination Sensor", we have succeeded to realize a beautiful gigantic LC TV.

• Proceedings of the IEEK Conference
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• 2003.11a
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• pp.11-14
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• 2003

In block-based lossy video compression, severe quantization causes discontinuities along block boundaries so that annoying blocking artifacts are visible in decoded video imases. These blocking artifacts significantly decrease the subjective image quality. In order to reduce the blocking artifacts in decoded images, many algorithms have been proposed However studies on so called, corner outliers, have been very limited. Corner outliers make image edges look disconnected from those of neighboring blocks at cross block boundary. In order to solve this problem, we propose a corner outlier detection and compensation algorithm as post-processing in spatial domain The experiment results show that the proposed method provides much improved subjective image quality.

• Proceedings of the Korean Society of Machine Tool Engineers Conference
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• 2001.04a
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• pp.119-124
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• 2001

In this study, a vision system with image processing method have been introduced to find the edge radius of curvature. It was applied to inspect the edge quality of the deburring process product with brush grinding. Size of data was found to be critical in calculating the radius of curvature. Results using laser measurement system were compared.

• Proceedings of the Korean Society of Machine Tool Engineers Conference
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• 2000.04a
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• pp.507-512
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• 2000

Due to increasing demand toward improving product quality, various methodologies have been introduced. A brush type grinding tool is one of the most frequently used one to facilitate required process. In order to produce consistent burr shape, various machining conditions have been combined applied to disk grinding process. It has been observed that the burr dimension(shape and width) depends on the inclination angle between grinding disk and workpiece. Drastic increase of tool Wear has been also observed along the inclination angle variation. Various burr shapes have been captured and analyzed using image processing technique.

• Proceedings of the Korean Society of Machine Tool Engineers Conference
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• 2004.10a
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• pp.10-15
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• 2004

A machining processes for flange panel has been introduced. Contrary to the conventional methods like forming and welding, roll-seaming method has been utilized for better quality and less cost. Several measurement methods including digital image processing have been used to confirm the product quality assurance.