• 방송공학회논문지
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• 제10권2호
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• pp.139-148
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• 2005

This paper presents recent works of the development of MPEG-21 DIA utility software as one of MPEG-21 activities. The main purpose of this work is to make integrated utility software for DIA C/C++ modules in a Java framework. To do this, JNI plays a role of the interface of a main module with C/C++ DIA adaptation modules. Furthermore, DIA and DID parsers are integrated to the utility software. Our software is designed such that all DIA modules are easily integrated. A variety of adaptation modules have been adopted in MPEG-21 standard. Among them, stereoscopic video conversion that is one of DIA adaptation modules is chosen and we show that our utility software is correctly implemented based on experiments.

• 한국조리학회지
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• 제13권1호
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• pp.204-211
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• 2007

In order to develop a pot lid that would not overflow, three parts were created, each different in size. One cover (A") had a small hole (dia. 10 cm) for the vapor to escape (dia. about 2.5 mm). Another, cover A' had a medium-sized hole (dia. about 5 cm) for the vapor to escape. Cover A (dia. 300 mm, $120\;mm^H$) had a large hole (dia. 100 mm) for the vapor to escape. Because the new cover was partially open while soy paste solution cooking, it showed that it could not only prevent overflow, but also extend the burning approaching and salinity increase time, reducing both cooking time and the amount of energy necessary to cook.

• 한국지반공학회논문집
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• 제24권3호
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• pp.53-63
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• 2008

본 연구에서는 불포화토의 포화도를 구하기 위해 디지털 이미지기법(DIA)을 적용하였다. 실험을 위한 시료는 주문진 표준사를 사용하였다. 1차원 모래기둥 시험을 실시하여 일정수위상태에서의 디지털 이미지의 colour number($C_n$)와 포화도(S)와의 상관식을 구하였다. 함수특성곡선(SWCC)을 구하기 위해 Buchner funnel이 부착된 hanging water column test를 실시하였으며, $C_n\;-\;S$ 관계식을 이용하여 각 suction head 단계에 따른 average colour number로부터 포화도를 산정하였다. Hanging water column test와 DIA기법으로부터 산정된 포화도를 비교해 본 결과, DIA기법을 이용하여 SWCC을 효과적으로 예측할 수 있음을 보였다.

• 건축사
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• 통권485호
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• pp.52-54
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• 2009

• Geomechanics and Engineering
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• 제18권2호
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• pp.153-159
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• 2019

This paper examines the results from three-dimensional dynamic finite element analysis undertaken to develop a new dynamically installed anchor (DIA). Several candidate shapes of new DIAs were selected after an investigation into previous researches of existing DIA designs. The performances of selected DIAs during the installation and loading in non-homogeneous clay were investigated through large deformation finite element (LDFE) analyses. Findings were compared to the current anchors in operation (i.e., Torpedo and Omni-Max DIA) to assess the viability of the new designs in the field. Overall, the anchor embedment depths of the novel DIAs lied under the results of OMNI-Max DIA. And also, the tracked anchor trajectory confirmed that, the novel DIAs dove deeper with stiffer travelling angle, compared to the OMNI-Max DIA. These elements are more critical and beneficial especially in a field where the achieved embedment depths are generally low.

• 한국도로학회논문집
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• 제18권4호
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• pp.47-53
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• 2016

PURPOSES : The objective of this study was to evaluate the results of the dynamic immersion test (DIT) through digital image analysis (DIA). METHODS : The asphalt binder retained post DIT was inspected visually by more than three investigators. However, because visual observations can be subjective, depending on the inspector's skills and knowledge, DIA was also performed. The threshold value for the DIA was determined by a mesh analysis, in which the digital image to be analyzed is divided into very small meshes. In addition, the bitumen bond strength (BBS) test was also performed to the compare the visual results with the mechanical values. RESULTS AND CONCLUSIONS : Depending on the materials used, various methods can be used to predict the behavior of retained asphalt. However, the increasing ratio in the trend of retained asphalt shows different behaviors among the evaluation methods. In this study, the results of the visual observations were significantly different from those of the DIA, the mesh analysis, and the BBS tests. Thus, DIA is an appropriate method for evaluating the results of the DIT. However, in order to use this technique in the field, it is necessary to determine a more reasonable threshold value by performing DIA on various materials.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2003년도 추계종합학술대회
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• pp.292-295
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• 2003

MPEG-21 멀티미디어 프레임워크 환경에서의 툴 서버의 구조와 기능을 제안한다. MPEG-21의 목적은 멀티미디어 콘텐츠의 전자적 생성, 배포, 거래를 투명하게 이용할 수 있도록 상호 운용 가능한 멀티미디어 프레임워크를 제공하는 데에 그 목적이 있다. MPEG-21을 구성하는 주 요소로서 DIP(Digital Item processing)와 DIA(Digital Item Adaptation)가 있다. DIP의 역할은 디지털 리소스에 메타 데이터 정보를 구조화하여 표현할 수 있는 DI(Digital Item)를 생성하고 소비하는 기능을 가진다. DIA는 사용자가 터미널 또는 네트워크 특성에 맞게 고유의 DI를 적응시켜서 보내주는 기능을 한다. 툴 서버(Tool server)는 DIP 또는 DIA로부터 필요로 하는 구동 툴을 검색하여 적합한 툴을 제공해 주는 기능을 한다. DIA가 DI 자체를 사용자 요구에 맞게 적응시켜 소비시켜 주는 일을 한다면 툴 서버는 사용자 터미널 환경에 맞추어 DI를 생성 또는 소비하는데 적합한 소프트웨어 툴을 찾아서 다운로딩하고 생성 또는 소비할 수 있게 해 주는 기능을 한다. 전체 논문의 구성은 다음과 같다. 1장에서 MPEG-21 멀티미디어 프레임워크에서 툴 서버의 필요성과 역할을 알아본다. 툴 서버가 가져야 할 요구 사항은 2장에서 논한다. 3장에서는 툴 서버의 기본 구조와 각 모듈별 기능을 살펴본다. 그리고 3장에서는 툴 서버를 DIP 또는 DIA와 연동했을 때 상호간에 이루어지는 시나리오를 설명한다. 또한 시나리오를 토대로 간단히 테스트용 툴 서버를 구현한다. 마지막 4장에서 결론을 맺는다.

• 분석과학
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• 제33권4호
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• pp.197-207
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• 2020

The current comparison methods with scoring systems that are used to compare visualized latent fingerprints (LF) have disadvantages. Evaluators using these methods are prone to make errors and fail to discriminate LFs correctly to notice the differences among those LFs. Therefore, a comparative and quantitative evaluation method that is capable of obtaining more objective and quantitative results is needed. Densitometric image analysis (DIA) is used in other fields as a reliable semi-quantitative comparison method. To apply DIA to LFs, the potential variables that can occur during the DIA process were tested. The visualized ridges of LFs can be compared using the concentration of dots against the background to make it possible to analyze the ridges with DIA. The variables that can be present during the DIA process include the thickness of the analysis line, the number of ridges to be taken, the number of divided zones within each of the fingerprints, and the angles of the analysis line against the ridge lines that were selected. From the analysis of the inked fingerprints and circular lines that are similar to fingerprints, the angle of the analysis lines with the ridge line was the most significant variable. The preliminary test result was applied to the comparison of LFs that were developed with the powder method and then compared with the AFIS analysis. A similar trend was found, and a more detailed and semi-quantitative comparison of the visualized LFs was possible. In the future, it is necessary to check the evaluative ability of the DIA method by analyzing the visualized LFs with other various development methods. However, DIA is currently an option that can be used as an objective comparative evaluation method during fingerprint studies with supplementary role.

• Restorative Dentistry and Endodontics
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• 제41권3호
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• pp.189-195
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• 2016

Objectives: A variety of root canal sealers were recently launched to the market. This study evaluated physicochemical properties, biocompatibility, and sealing ability of a newly launched resin-based sealer (Dia-Proseal, Diadent) compared to the existing root canal sealers (AHplus, Dentsply DeTrey and ADseal, Metabiomed). Materials and Methods: The physicochemical properties of the tested sealers including pH, solubility, dimensional change, and radiopacity were evaluated. Biocompatibility was measured using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. For microleakage test, single-rooted teeth were instrumented, and obturated with gutta-percha and one of the sealers (n = 10). After immersion in 1% methylene blue solution for 2 weeks, the specimens were split longitudinally. Then, the maximum length of staining was measured. Statistical analysis was performed by one-way analysis of variance followed by Tukey test (p = 0.05). Results: Dia-Proseal showed the highest pH value among the tested sealers (p < 0.05). ADseal showed higher dimensional change compared to AHplus and Dia-Proseal (p < 0.05). The solubility values of AHplus and Dia-Proseal were similar, whereas ADseal had the lowest solubility value (p < 0.05). The flow values of sealer in increasing order were AHplus, DiaProseal, and ADseal (p < 0.05). The radiopacity of AHplus was higher than those of ADseal and Dia-Proseal (p < 0.05). The cell viability of the tested materials was statistically similar throughout the experimental period. There were no significant differences in microleakage values among the tested samples. Conclusions: The present study indicates that Dia-Proseal has acceptable physicochemical properties, biocompatibility, and sealing ability.

• 전기전자학회논문지
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• 제20권2호
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• pp.123-127
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• 2016

본 연구에서는 $3mm{\times}3mm{\times}2mm$, $3mm(Dia){\times}15mm$, $3mm(Dia){\times}20mm$, $10mm(Dia){\times}20mm$. YSO 섬광체와 광전자증배관을 결합하여 검출기를 제작하였다. 또한 10mm의 지름을 가진 섬광체는 LightTools를 이용하여 최적화한 광가이드와 결합하였다. 광가이드의 두께는 2mm이며 입사부는 섬광체 크기와 같은 10mm이고 출사부는 다른 섬광체와 같은 3mm이다. 제작된 검출기는 표준 감마선원인 $^{137}Cs$를 이용하여 분광 특성을 분석하였다. 그 결과 662keV에서 각각의 에너지 분해능이 14.46%, 21.10%, 10.71%, 나왔으며 10mm의 지름과 20mm의 길이를 가진 섬광체에 광가이를 결합한 섬광체가 7.48%로 분해능이 가장 좋게 나왔다.