• Title/Summary/Keyword: Storing Method

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Storing Method of Learning Resources based on Cluster for e-Learning (이러닝을 위한 클러스터 기반 학습 자원의 저장 기법)

  • Yun, Hong-Won
    • The Journal of the Korea Contents Association
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    • v.7 no.1
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    • pp.155-160
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    • 2007
  • A learning resource is a SCO or a collection of on or more assets in the SCORM. A storage policy is required to search rapidly and reuse assets in e-learning environment. However there are not research results about it. In this paper, We propose a storing method for assets based on cluster and define the mathematical formulation of it. Also, we present criteria for assets evaluation and describe procedure to evaluate each asset. We show that the search based on proposed cluster storing method increase performance than the categorization search through performance evaluation.

Effect of Storing Method and Film Layers on the quality of Round Baled Fresh Rice Straw Silage (저장방법 및 비닐겹수가 생볏짚 원형베일 사일리지 품질에 미치는 영향)

  • Kim, J.G.;Chung, E.S.;Seo, S.;Park, G.J.;Yoon, S.H.
    • Journal of The Korean Society of Grassland and Forage Science
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    • v.21 no.2
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    • pp.75-80
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    • 2001
  • This experiment was carried out to determine the effect of storing method and wrapping frequency on the quality of round baled rice straw silage at experimental field of Grassland and Forage Crops Division, National Livestock Research Institute, RDA, Suwon fro 1999 to 2000. Storing methods consisted of erect and lay type, and wrapping frequencies were composed to 2, 4, 6, 8 and 10 film layers. there were no significant difference in feed value between storing methods, but acidity of lay type was significantly higher than that of erect type. According to the wrapping frequency, crude protein(CP) content of 2 film layers treatment was lowest during 6 month storing periods, and that of 4 film layers treatment was lowest during 10 month storing periods. The two film layers treatment which was stored for 10 month was impossible for ruminant to feed it, because it was rotten severely. Storing for 6 month, 2 film layers treatment represented highest pH value by 8.23 and storing for 10 month, 4 film layers treatment showed highest pH value by 7.17. Most of silage ranked grade 3 in quality grade. According to this experiment, it was recommended that application of round bale silage system to fresh rice straw should wrap above 4 film layers for 6 month, and above 6 film layers for 10 month storing periods.

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A Study on the Effect of Storing Temperature and Humidity upon the Self Life of Propellant KM30Al (추진제 KM30Al의 저장 온도/습도와 저장수명과 관계 고찰)

  • Cho, Ki-Hong
    • Journal of the Korea Institute of Military Science and Technology
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    • v.9 no.1 s.24
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    • pp.13-23
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    • 2006
  • A propellant mainly consisting of nitric ester including nitrocellulose and nitroglycerine is characteristic of being decomposed naturally. And this phenomenon is known as being affected mostly by its storing temperature and humidity. In this research, the effect of storing temperature and humidity on self life has been studied by measuring the contained quantity of residual stabilizer of propellant KM30Al, which are parts of 155MM propelling charge K676 and K677; the method for the measurement is acceleration aging test, and decomposition reaction equation, Eyring Equation and Berthlot Equation were used for the calculation. As result of this study, it was found that the storing temperature influenced seven times as large as the storing humidity upon the self life of the propellant KM30Al, Furthermore, especially in the high temperature region, the storing temperature had a dominant effect on the self life.

Segmentation and Appearance Features Index for Digital Video Data

  • Yun, Hong-Won
    • Journal of information and communication convergence engineering
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    • v.8 no.6
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    • pp.697-701
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    • 2010
  • The numbers of digital video cameras are fast increased. Accordingly, digital video data management is becoming more important. Efficient storing method and fast browsing method still remains to be one of significant issue. In this paper, an optimized data storing process without losing information and an organized appearance features indexing method are proposed. Also, the data removing policy could be used to reduce large amount of space and it facilitates fast sequential search. The appearance features index constructs key information of moving objects to answer queries about what people are doing, particularly when, where and who they move. The evaluation results showed better performance in the transfer time and the saving in storage space.

A Hybrid Method of Storing XML Data Using RDBMS (RDBMS를 이용한 XML 데이터의 혼합형 저장 기법)

  • Jeon, Chan-Hoon;Kang, Hyun-Chul
    • The Journal of Society for e-Business Studies
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    • v.14 no.1
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    • pp.57-79
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    • 2009
  • As the Web-based e-Business prevails, the volume of XML data on the Web is getting larger than ever. Although much research has been done on decomposing and storing XML data in RDB, which is now the most popular storage for XML, and on processing XML queries through their SQL counterparts, little attention was paid to how to alleviate the burden of storing massive volume of XML data. In this paper, we propose a hybrid method of storing XML data in RDB, whereby the unit of storage could be an XML subtree as well as an XML node. The part of XML data whose nodes were separately stored could be reformed into an XML subtree for storing when it gets rarely queried or less valuable for reference as time goes by. With this method, we designed and implemented a hybrid XML storage and query processing system, comparing it with the conventional system where an XML node is the only unit of storage. Through experiments, we compared storage efficiency and query processing performance, validating the effectiveness of our proposed system.

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A Distributed Architecture Based SMTP Server for Large Email Service (대용량 이메일 서비스를 위한 분산 구조 기반의 SMTP 서버)

  • Kim, Young-Jong;Kwak, Hu-Keun;Chung, Kyu-Sik
    • The KIPS Transactions:PartC
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    • v.16C no.5
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    • pp.597-604
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    • 2009
  • An SMTP(Simple Mail Transfer Protocol) server was designed for delivering and storing user's email across a network. An SMTP server can be distributed as multiple servers for large service, huge users or massive emails. An SMTP server can be constructed by multiple servers with separating file system as email storing space, and each SMTP server can usually share each file system by using the NFS(Network File system). However the NFS is originally designed for sharing each file system across a network, and contains all attributes and features of regular file system. Using this NFS for email storing space of SMTP servers, it makes overhead due to unnecessary work of regular file system. In this paper, we propose a method to do directly operation with socket for reducing work overhead caused by the NFS. For doing directly operation with socket, this paper defines information based storing space structure and a protocol for storing emails. We performed experiments using Mailstone made by Netscape. The experimental results show the performance improvement of the proposed method compared to the existing method.

Energy Storage Characteristics In Fixed Beds (Charging, Storing, Discharging)

  • Hassanein, Soubhi A.;Choi, Sang-Min
    • 한국연소학회:학술대회논문집
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    • 2004.11a
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    • pp.17-23
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    • 2004
  • In the present work, the numerical model was refined to predict the thermal analysis of energy storage in a fixed beds during (charging ,storing, discharging) mode. The governing energy equations of both fluid and the solid particles along with their initial and boundary conditions are derived using a two-phase, one dimensional model. The refined model is carried out by taking into account change of (air density , air specific heat) with air temperature and also by taking into considerations heat losses from bed to surrounding. Finite difference method was used to obtain solution of two governing energy equations of both fluid and solid particles through a computer program especially constructed for this purpose. The temperature field for the air and the solid are obtained, also efficiency of energy stored inside the bed is computed. Finally using refined model the effect of air flow rate per unit area Ga (0.2, 0.3, and 0.4 kg/$m^2$-s), and inlet air temperature (200, 250, 300 $^{\circ}C$) on energy storage characteristics was studied in three mode ( charging ,storing, discharging). The rock particles of diameter 1 em is used as bed material in this research.

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Silk Reelability of the Cocoon Stored in a Pelyethylene Bag (Polyethylene대 저견이 조사에 미치는 영향)

  • 최병희;송기언
    • Journal of Sericultural and Entomological Science
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    • v.6
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    • pp.31-33
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    • 1966
  • This work has been carried out for many months to check whether polyethylene bag cocoon storging method bring better reeling result against the normal cotton bag storing method. The obtained results were as followings. 1. The pupa killed cocoons could be stored on the ground in case of packing in polyethylene-bag until the secondary dry process. 2. The raw silk percentage of cocoon stored in polyethylene bag, increased 0.5% than the cotton bag storing method, not because of its reelability, but because of the better yield of cocoon bave. 3. Musty cocoon was not shown during the polyethylene hag storage, but the cocoons were attacked by rats as usually. 4. Polyethylene bag storing method invited more insects attack than the normal method, but the attack was able to cease by enclosing two naphthalene tablets in each bag.

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A Study on Storing and Removing Method of Broadcasting Content for Personalized Consumption (개인화된 소비를 위한 방송 콘텐츠 저장 및 이동 방법에 관한 연구)

  • Jang, Jae-Seok;Jin, Sung-Ho;Kim, Hui-Yong;Ro, Yong-Man
    • Journal of Korea Multimedia Society
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    • v.10 no.7
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    • pp.869-881
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    • 2007
  • In this paper, storing and removing method of broadcasting content is proposed for personalized consumption. The main objective of this paper is to keep personalized information, such as additional contents, user creation data, usage history, with broadcasting content, and user can consume broadcasting content to accommodate individual preference. Consequently, proposed file format in this paper is based on MPEG-4 and MPEG-21 file format because they can access and extract data within file format easily and can keep spatiotemporal relation between data. In addition, TV-Anytime metadata is used for program description metadata. Finally, proposed method is verified with file format player and useful application scenarios.

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Computation of Reusable Points in Incremental LL(1) Parsing (점진적 LL(1) 구문분석에서의 재사용 시점의 계산)

  • Lee, Gyung-Ok
    • Journal of KIISE:Software and Applications
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    • v.37 no.11
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    • pp.845-850
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    • 2010
  • Incremental parsing has been developed to reuse the parse result of the original string during the parsing of a new string. The previous incremental LL(1) parsing methods precomputed the reusable point information before parsing and used it during parsing. This paper proposes an efficient reusable point computation by factoring the common part of the computation. The common symbol storing method and the distance storing method were previously suggested to find the reusable point, and by combining the methods, this paper gives the storing method of the distance to common symbols. Based on it, an efficient incremental LL(1) parser is constructed.