• Title/Summary/Keyword: CGM

Search Result 98, Processing Time 0.021 seconds

A Tone Correction Halftone Method Based on Response Characteristic of Digital Printer (디지털 프린터의 출려특성기반 톤 보정 망점화)

  • 신지현
    • Journal of the Korean Graphic Arts Communication Society
    • /
    • v.15 no.1
    • /
    • pp.71-83
    • /
    • 1997
  • In recent years, various kinds of organic photoreceptors have been used for copy machines based on electrophotography. Most of them are constructed into layered devices in which a photogeneration layer is separated from a charge transport layer. They are usually used with application of negative charges. Organic pigment have received considerable attention with phthalocyanine, squaraine, and azo compounds being used to construct zerograpgic photoreceptors with enhanced long wavelength sensitivity, residual potential and zerograpgic gain of squaraine photoconductor were measured from the photoinduced discharge curve. Most of synthesized squaraine derivative couldn`t use for CGM(charge generation material), but it knew that a part of one was able to use it within the possibility. A few appliance is used it know about dependence on CTM(charge transport material) of squaraine derivative. It could know that experiment`s result is 2.5-bis(4-N-N`-diethylaminophenyl)-1,3,4-oxadiazole(OXD) is the bestproduct.

  • PDF

An Analysis of Existence WebGIS and A study on WebGIS based on XML (기존의 WebGIS에 대한 분석과 XML 기반의 WebGIS에 대한 연구)

  • Cho, Sung-Yun;Kim, Byung-Guk
    • 한국공간정보시스템학회:학술대회논문집
    • /
    • 2002.03a
    • /
    • pp.15-21
    • /
    • 2002
  • 기존의 WebGIS는 구현방법에 따라서 서버중심과 클라이언트중심의 WebGIS모델로 구분할 수 있다. 서버중심의 WebGIS모델은 결과데이터가 이미지(JPG,GIF)로 클라이언트에 전송되므로 사용자는 기본적인 GIS 기능만을 처리할 수 있고, 데이터 확대 시 데이터가 손상되는 문제들이 있다. 클라이언트 중심의 WebGIS모델은 벡터데이터(Java-applet, ActiveCGM) 전송을 위해 고가의 특정 소프트웨어를 구입해야 하고, 플랫폼에 의존적이며, 표준화된 포맷이 아니므로 웹에서 데이터 상호 전송 및 호환의 문제가 있다. 본 논문에서는 기존의 WebGIS모델의 전반적인 분석을 통해서 각기 구축된 WebGIS의 구현방법과 문제점에 대해 고찰해 본다. 그리고 이런 문제점들이 대안인 XML(extensible Markup Language)으로 기술된 GML (Geographic Markup Language)과 SVG(Scalable Vector Graphics)를 이용한 WebGIS에 대한 연구와 향후 우리가 연구해야 할 방향에 대해 모색해 본다.

  • PDF

Multi-path Routing Policy for Content Distribution in Content Network

  • Yang, Lei;Tang, Chaowei;Wang, Heng;Tang, Hui
    • KSII Transactions on Internet and Information Systems (TIIS)
    • /
    • v.11 no.5
    • /
    • pp.2379-2397
    • /
    • 2017
  • Content distribution technology, which routes content to the cache servers, is considered as an effective method to reduce the response time of the user requests. However, due to the exponential increases of content traffic, traditional content routing methods suffer from high delay and consequent inefficient delivery. In this paper, a content selection policy is proposed, which combines the histories of cache hit and cache hit rate to collaboratively determine the content popularity. Specifically, the CGM policy promotes the probability of possible superior paths considering the storage cost and transmission cost of content network. Then, the content routing table is updated with the proportion of the distribution on the paths. Extensive simulation results show that our proposed scheme improves the content routing and outperforms existing routing schemes in terms of Internet traffic and access latency.

Operation of ULCS - real life

  • Prpic-Orsic, Jasna;Parunov, Josko;Sikic, Igor
    • International Journal of Naval Architecture and Ocean Engineering
    • /
    • v.6 no.4
    • /
    • pp.1014-1023
    • /
    • 2014
  • In this paper the real life operation of ULCS (Ultra Large Container Ships) is presented from the point of view of shipmasters. The paper provides interpretation of results of questionnaire filled by masters of large container ships during Tools for Ultra Large Container Ships (TULC) EUI FP7 project. This is done in a way that results of questionnaire are further reviewed and commented by experienced master of ULCS. Following phenomena are subject of questionnaire and further discussed in the paper: parametric rolling, slamming, whipping, springing, green water and rogue waves. Special attention is given to the definition of rough sea states as well as to measures that ship masters take to avoid them as well as to the manoeuvring in heavy seas. The role of the wave forecast and weather routing software is also discussed.

Numerical Solution of the Mild Slope Equation by Conjugate Gradient Method (CGM을 이용한 완경사방정식의 수치해석)

  • 윤종태
    • Journal of Korean Society of Coastal and Ocean Engineers
    • /
    • v.5 no.2
    • /
    • pp.84-90
    • /
    • 1993
  • Iterative solution procedure (Conjugate Gradient Method, Panchang et al., 1991) is implemented for solving the complete mild slope equation for the spherical shoal and the coast with detached breakwater. The numerical results agreed well with the experimental data. The disadvantage that mild slope eguation could be solved only for small domains is now overcome by using this solution procedure. Moreover it can be easily applied to the coastal regions with complex geometry and structures, and needs not so much computer time as the conventional models.

  • PDF

The Design of 3D Web Map Service Components (3차원 웹 맵 서비스 컴포넌트의 설계)

  • Choo, Dae-Soo;Choi, Hae-Ock;Lee, Jong-Hun
    • Proceedings of the Korea Information Processing Society Conference
    • /
    • 2001.10a
    • /
    • pp.7-10
    • /
    • 2001
  • 웹의 특징인 조작의 간편함, 뛰어난 접근성 등으로 인해 웹을 통한 지리정보의 검색, 접근을 위한 웹 맵 서비스의 요구가 증대되고 있다. 지리정보 분야의 대표적인 컨소시움인 OGC 를 통해서 웹 맵 서비스를 위한 표준 인터페이스가 정의됨에 따라 향후 웹을 통한 지리정보의 공유가 활발히 진행될 것으로 예상된다. 그런데, 현재 정의된 웹 맵 서비스에는 3 차원 맵 서비스를 고려하고 있지 않다. 왜냐하면, 3 차원 데이터 모델에 따라 구축된 공간 데이터가 거의 없으며, 맵 출력을 위한 출력 요소 정의 언어인 SVG 또는 WebCGM 등이 3 차원 기하를 표현할 수 없기 때문이다. 이 논문에서는 OCG 의 웹 맵 서비스를 위한 표준 인터페이스를 준수하면서, 최소한의 확장을 통해 3 차원 맵 서비스를 지원하기 위한 웹 맵 서비스 컴포넌트를 제안한다. 3 차원 맵은 2 차원 공간 데이터와 속성 정보를 이용하여 생성하므로, 3 차원 공간 데이터베이스 구축을 위한 추가의 비용이 발생하지 않는다.

  • PDF

Simulation of Particle Beds with Combustion and Reduction in Steel Making Rotary Kilns (제철용 로터리 킬른 내의 연소 및 환원을 포함한 입자 거동 예측모사 해석)

  • Han, Woojoo;Jang, Kwonwoo;Han, Karam;Huh, Kang Y.
    • 한국연소학회:학술대회논문집
    • /
    • 2015.12a
    • /
    • pp.173-175
    • /
    • 2015
  • We simulate the particle bed motions with combustion and reduction in steel making rotary kilns. The particle bed motions are simulated by a Lagrangian approach called Discrete Phase Model (DPM). To reduce the number of tracking particles, the Coarse Grain Model (CGM) was applied. The model for particle motions showed good agreements with experimental results. In addition to the particle motion, the combustion and reduction simulation was performed. The combustion and reduction simulation can consider heat, mass and momentum transfer between the gas phase and particle beds.

  • PDF

Glucose Diffusion Limiting Membrane Based on Polyethyleneimine (PEI) Hydrogel for the Stabilization of Glucose Sensor

  • Kim, Suk-Joon;Shin, Woonsup
    • Journal of Electrochemical Science and Technology
    • /
    • v.12 no.2
    • /
    • pp.225-229
    • /
    • 2021
  • Commercially available continuous glucose sensors require the operation stability for more than two weeks. Typically, the sensor comprises a sensing layer and an over-coating layer for the stable operation inside the body. In the sensing layer, enzymes and mediators are cross-linked together for the effective sensing of the glucose. The over-coating layer limits the flux of glucose and works as a biocompatible layer to the body fluids. Here, we report the simple preparation of the flux-limiting layer by the condensation of polyethyleneimine (PEI), tri-epoxide linker, and trimethylolpropane triglycidyl ether (PTGE). The sensor is constructed by a layer-by-layer drop-coating of the sensing layer containing glucose dehydrogenase and the PEI-derived blocking layer. It is stable for more than 14 days, which is enough for the sensor in the continuous monitor glucose monitoring (CGM) system.

Development of blood glucose prediction model using transformer model (트랜스포머 모델을 이용한 미래 혈당 예측 모델 개발)

  • Seohee Kim;DaeYeon Kim;JiYoung Woo
    • Proceedings of the Korean Society of Computer Information Conference
    • /
    • 2024.01a
    • /
    • pp.37-38
    • /
    • 2024
  • 본 연구에서는 순천향대학교 천안병원에서 제2형 당뇨병 입원 환자를 대상으로 연속 혈당 측정기(CGM)를 통해 일주일 동안 수집된 101명의 혈당치 데이터를 사용하였다. 혈당치의 120분 동안 수집된 데이터를 기반으로 30분 후의 혈당치를 예측하는 트랜스포머 모델을 제안한다. 이는 트랜스포머의 인코더 모델만을 사용한 거보다 성능이 평균 제곱근 오차 (RMSE) 기준 약 4배 정도 향상하였으며, 이는 트랜스포머의 디코더 모델이 성능 향상에 효과적임을 보인다.

  • PDF

Comparative Effects of Dietary Isolated Soy Protein and Casein on Plasma Cholesterol Levels in Young Chicks (대두단백질 및 카제인 섭취가 병아리의 혈액 Cholesterol 함량에 미치는 영향 비교)

  • Chee, Kew-Mahn;Kim, Young-Mee;Juhn, Jee-Young;Choi, In-Sook;Oh, Mi-Hyang
    • Korean Journal of Poultry Science
    • /
    • v.37 no.1
    • /
    • pp.69-80
    • /
    • 2010
  • Hypocholesterolemic effect of soy protein was examined in comparison with casein and three other dietary protein sources in chicks. In two feeding trials, 40 (Expt.1) or 50 (Expt. 2), three-day-old, male chicks were forced-fed each of five semi-purified-type diets containing isolated soy protein (ISP, cp 82%), casein (cp 92%), rice protein (RP, cp 70%), corn gluten meal (CGM, cp 65%) or fish meal (FM, cp 70%) for two weeks. The diets for Expt. 2 were supplemented with 0.3% cholesterol by replacing glucose. Each protein source was the only source of protein of each diet. Essential amino acids were added to the diets to satisfy their requirements according to NRC. The diets were forced-fed to equalize the intake of all nutrients except the amino acids which were inherently variable in the diets. Chicks fed casein showed lower body weight gain than those fed the other proteins in both experiments. Birds fed ISP and FM gained better body weight than the others. Chicks fed casein showed significantly higher levels of plasma total cholesterol, non-HDL cholesterol and triacylglycerol (TG) than those fed ISP and the other protein sources. Meanwhile, the chicks fed ISP, RP, CGM and FM showed comparable levels of plasma total cholesterol, non-HDL cholesterol and TG. In Expt. 2, the birds fed casein and FM showed markedly elevated plasma total cholesterol and non-HDL cholesterol levels. Liver weight and levels of total lipids and cholesterol of chicks fed casein appeared significantly higher than those of the other protein diets, whereas those of the chicks fed ISP, RP, CGM and FM appeared comparable except cholesterol in FM group. In conclusion, only the chicks fed casein diets in both experiments always showed significantly higher levels of plasma cholesterol and TG compared to those fed ISP and the other protein sources. These results support the views that casein, which has unique lysine-arginine ratio, is inherently hyper-cholesterolemic, and ISP is hypocholesterolemic only when compared to casein.