• Title/Summary/Keyword: dom

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Evaluation of Haloacetic Acid Formation Potential in Drinking Water Treatment Process by Fraction Technique (정수처리 공정에서 용존 유기물질 분류에 의한 haloacetic acid 생성능 평가)

  • Son, Hee-Jong;Hwang, Young-Do;Ryu, Dong-Choon;Jung, Chul-Woo;Lee, Gun;Son, Hyeng-Sik
    • Journal of Environmental Science International
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    • v.23 no.9
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    • pp.1655-1662
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    • 2014
  • A comprehensive fractionation technique was applied to a set of water samples obtained along drinking water treatment process with ozonation and biological activated carbon (BAC) process to obtain detailed profiles of dissolved organic matter (DOM) and to evaluate the haloacetic acid (HAA) formation potentials of these DOM fractions. The results indicated that coagulation-sedimentation-sand filtration treatment showed limited ability to remove hydrophilic fraction (28%), while removal of hydrophobic and transphilic fraction were 57% and 40%, respectively. And ozonation and BAC treatment showed limited ability to remove hydrophobic fractions (6%), while removal of hydrophilic and transphilic fractions were 25% and 18%. The haloacetic acid formation potential (HAAFP)/dissolved organic carbon (DOC) of hydrophilic fraction was the highest along the treatment train and HAAFP/DOC of hydrophilic fraction was higher than hydrophobic and transphilic fraction as 23%~30%, because of better removal for hydrophobic fraction both in concentration and reactivity.

A Method of GeoWeb Services Using SVG (SVG 그래픽을 이용한 GeoWeb 서비스 방법)

  • Nah, Bang-Hyun;Kwon, Chang-Hee
    • Journal of Advanced Navigation Technology
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    • v.12 no.5
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    • pp.401-411
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    • 2008
  • GeoWeb services deliver various thematic information related to geographic positions over the internet GeoWeb services needs to provide efficient accessibilities to geographic contents by interaction with users through the map graphic elements. SVG, which is an application of XML, gives rich DOM I/F for interaction with graphic objects. In this study map servers and client viewers are implemented to serve SVG map available on the fixed mobile internet computing environments. Map servers are made compliant with OGC WMS and WFS specifications and SVG map viewers are developed for both Windows PC and WinCE PDA.

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Implementation of medicinal plant information system using Ajax and jQuery (Ajax과 jQuery 기반 약용식물 정보시스템 구현)

  • Kim, Hae-Ran;Kang, So-Young;Ceong, Hee-Taek;Han, Soon-Hee
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.14 no.7
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    • pp.1626-1633
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    • 2010
  • In this paper, we implemented medicinal plant information system based on user requirement using Ajax technique which can retrieve data from the server asynchronously in the background without refresh webpage and jQuery which is a lightweight cross-browser javascript library. Also, we presented the source code handling the server response data used in the system and compared the features by the type of response data. This system shows the improvement of user interaction and response rates because of a simple response data from the server, client-side data processing and change of web page by manipulating the DOM tree and provides ease of use and convenient data access.

A Meta-Model for the Storage of XML Schema using Model-Mapping Approach (모델 매핑 접근법을 이용한 XML 스키마 저장 메타모델에 대한 연구)

  • Lim, Hoon-Tae;Lim, Tae-Soo;Hong, Keun-Hee;Kang, Suk-Ho
    • IE interfaces
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    • v.17 no.3
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    • pp.330-337
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    • 2004
  • Since XML (eXtensible Markup Language) was highlighted as an information interchange format, there is an increasing demand for incorporating XML with databases. Most of the approaches are focused on RDB (Relational Databases) because of legacy systems. But these approaches depend on the database system. Countless researches are being focused on DTD (Document Type Definition). However XML Schema is more comprehensive and efficient in many perspectives. We propose a meta-model for XML Schema that is independent of the database. There are three processes to build our meta-model: DOM (Document Object Model) tree analysis, object modeling and storing object into a fixed DB schema using model mapping approach. We propose four mapping rules for object modeling, which conform to the ODMG (Object Data Management Group) 3.0 standard. We expect that the model will be especially useful in building XML-based e-business applications.

Two Unrecorded Species of the Snapper (Perciformes: Lutjanidae) Collected from Jeju Island, Korea

  • Kim, Maeng Jin;Kim, Byung Yeob;Kim, Joon Sang;Song, Choon Bok
    • Fisheries and Aquatic Sciences
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    • v.15 no.4
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    • pp.313-316
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    • 2012
  • Two unrecorded species of the snapper, Lutjanus malabaricus (296.0 mm standard length [SL]) and L. stellatus (350.0 mm SL) belonging to the family Lutjanidae, were first collected from the western coastal waters of Jeju Island, Korea. L. malabaricus is characterized by having a dark marking on the upper half of the caudal peduncle, a band of vomerine teeth that does not protrude posteriorly at the middle, and nine anal soft rays. Compared to its Korean relative, L. malabaricus is distinguishable by having rows of scales that run obliquely in the dorsal-posterior direction above the lateral line (vs. parallel to the lateral line in L. argentimaculatus). L. stellatus can be identified by the absence of wavy blue lines on the head (vs. many blue lines in L. rivulatus) and presence of a white spot above the lateral line (vs. a black blotch on the lateral line in L. rivulatus). We propose new Korean names, "Jin-hong-tung-dom" and "Huin-jeom-tung-dom," for L. malabaricus and L. stellatus, respectively.

A Study on the DTD Digital Signature for Cryptographic XML/EDI in an Internet Shopping Mall (인터넷 쇼핑몰에서 암호화된 XML/EDI를 위한 DTD 전자서명에 관한 연구)

  • Hong, Seong-Pyo;Kim, Hyeong-Gyun;Lee, Joon
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.7 no.3
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    • pp.519-525
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    • 2003
  • Technology that develop existent EDI according to electronic commerce environment by XML's entrance on the stage is XML/EDI. The DTD is meta data that define meaning of expressed data on XML document. Therefore, in case DTD information is damaged this information to base security of XML document dangerous. Not that attach digital signature on XML document for XML/EDI that is encoded in internet shopping mall in this research, proposed method to attach digital signature to DTD. When sign digital, problem that create entirely other digest cost because do not examine about order that change at message digest process is happened. This solved by method to create DTD's digital signature using DOM that can embody tree structure for standard structure and document.

Three Dimensionally Ordered Microstructure of Polycrystalline TiO2 Ceramics with Micro/meso Porosity

  • Chang, Myung Chul
    • Journal of the Korean Ceramic Society
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    • v.53 no.2
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    • pp.227-233
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    • 2016
  • In order to make a highly ordered three-dimensional porous structure of titania ceramics, porogen beads of PS [Polystyrene] and PMMA [poly(methylmetacrylate)] were prepared by emulsion polymerization using styrene monomer and methyl methacrylate monomer, respectively. The uniform beads of PS or PMMA latex were closely packed by centrifugation as a porogen template for the infiltration of titanium butoxide solution. The mixed compound of PS or PMMA with titanium butoxide was dried and the dry compacts were calcined at $450^{\circ}C-750^{\circ}C$ according to the firing schedule to prepare micro- and meso- structures of polycrystalline titania with monodispersed porosity. Inorganic frameworks composed of $TiO_2$ were formed and showed a three Dimensionally Ordered Microstructure [3DOM] of $TiO_2$ ceramics. The pulverized particles of the $TiO_2$ ceramic skeleton were characterized using XRD analysis. A monodispersed crystalline micro-structure with micro/meso porosity was observed by FE-SEM with EDX analysis. The 3DOM $TiO_2$ skeleton showed opalescent color tuning according to the direction of light.

Feeding Sesbania Leaves as a Sole Feed on Growth and Nutrient Utilization in Goats

  • Shahjalal, M.;Topps, J.H.
    • Asian-Australasian Journal of Animal Sciences
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    • v.13 no.4
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    • pp.487-489
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    • 2000
  • An experiment was conducted for 56 days using nine castrated male Black Bengal goats (initial live weight 9.0 kg) aged about 5 months to study the effects of feeding Sesbania leaves as a sole feed on growth performance and nutrient utilization. The animals were fed ad libitum on either road-side grass, Sesbania aculeata leaves or Sesbania rostrata leaves. Average dry matter (DM) intake was 179, 229 and 259 g/d for goats fed road-side grass, Sesbania aculeata and Sesbania rostrata, respectively. Corresponding mean values for average daily live weight change were -6.6, 9.5 and 38.1 g, respectively. These values were higher (p<0.05) for goats fed Sesbania leaves than those given road-side grass. The apparent digestibility of all the proximate components except CF and the concentrations of DCP, TDN, DOM and ME of Sesbania leaves were higher (p<0.05) than those of road-side grass. Sesbania rostrata was superior (p<0.05) to Sesbania aculeata for nutrient digestibilities (except for NFE) and also for DOM, DCP and ME concentrations. Therefore, it may be concluded that the production of Sesbania rostrata, a legume fodder, should be encouraged for feeding goats.

First Record of the Green Jobfish, Aprion virescens (Perciformes: Lutjanidae) from Korea (한국산 퉁돔과 어류 1미기록종, Aprion virescens)

  • Kim, Joon-Sang;Kim, Byung-Yeob;Song, Choon-Bok
    • Korean Journal of Ichthyology
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    • v.23 no.4
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    • pp.310-313
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    • 2011
  • This is the first report of Aprion virescens, belonging to the family Lutjanidae, collected in Korea. The specimen (151.4 mm in standard length) was caught by the gill net in the coastal waters of Jeju Island on 30 October, 2009. This species is characterized by having a deep vertical groove in front of eye, very short pectoral fin almost equal to snout length, and four black spots on dorsal fin. We propose a new Korean name, "Nok-saek-tung-dom-sok" and "Nok-saek-tung-dom" for the genus and species, respectively.

A Study on Proportion-Generating System Based on Dom Hans van der Laan′s Proportion Theory (돔 한스 반 데어 란의 비례론에 기초한 비례생성 시스템에 관한 연구)

  • Choo Seung Yeon
    • Journal of the Korean housing association
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    • v.15 no.5
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    • pp.69-76
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    • 2004
  • 비트루비우스(Vitruvius)에서 벤츄리(Venturi)에 이르기까지 많은 건축사가(建榮史家) 또는 건축가(建築家)들이 건축원리에 대한 각자의 규범적 태도를 글로써 밝혀왔다. 이러한 규범적 내용 중 비례이론은 서양건축에 있어 건축미(建築美) 비밀로 간주되어, 조화로운 건축물이 꼭 갖추어야 할 덕목중의 하나로 인식되었다. 현대건축에서 비교적 근대 비례시스템이라 불릴 수 있는 것으로 르 꼬르뷔지에의 모될로르와 반 데어 란의 플라스틱 넘버를 들 수 있다. 모될로르는 현재까지 아주 제한된 성공밖에 거두지 못했는데, 이는 피보나치 수열에 기초한 수치들이 커졌을 때 단위의 배수관계가 거의 형성되지 않는다는 사실에 기인한다. 반면에 플라스틱 넘버는 모될로르의 결점들을 보완할 수 있는 매력적인 수열을 가지고 있다. 이에 본 연구는 반 데어 란의 비례시스템 분석을 통하여 유도된 수열규칙이 건축디자인과 관련되어 직접적으로 적용되어 질 수 있는 CAAD시스템을 제안한다. 본 시스템의 초점은 반 데어 란의 비례이론이 어떻게 컴퓨터 언어로 변환 및 CAAD시스템에 적용되어, 실질적인 건축 실무행위에 있어 컴퓨터가 디자인 도우미로서 역할을 수행할 수 있겠는가하는 것이다. 연구의 결과, 사용자는 이러한 시스템을 사용함으로써 반 데어 란의 비례시스템을 자신의 디자인에 손쉽게 적용할 수 있으며, 이는 복잡한 치수관계로 구성된 비례시스템의 건축실무 활용으로 발전되어질 수 있을 것으로 사료된다.