• Title, Summary, Keyword: sizing

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Automatic Measurement System for Sizing Test I (사이즈도 자동 측정 시스템 개발을 위한 기초연구 I)

  • Kim, Gyeong-Cheol;Kim, Cheol-Hwan;Lee, Ji-Yeong;Sheikh, Mominul Islam;Park, Hyeon-Jin;Kim, Seong-Ho;Sim, Seong-Ung;Jo, Hu-Seung
    • Proceedings of the Korea Technical Association of the Pulp and Paper Industry Conference
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    • pp.327-333
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    • 2011
  • This study investigated the prime difference between different methods for measuring a sizing degree. Based on the results coming from the study, a new type of the automatic measuring system of a sizing degree. The system includes synchronized devices for measuring contact angle and St$\ddot{o}$ckigt sizing degree at the same time.

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A study on Integrated Sizing model for Information System (정보시스템 통합 규모산정 모형설정에 관한 연구)

  • Ra, Jong-Hei;Choi, Kwang-Don;Choi, Young-Jin;Mun, Sung-Jun
    • Journal of Digital Convergence
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    • v.5 no.2
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    • pp.47-57
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    • 2007
  • In this days, information resources are very important in the organization. So, Many public institutions as well as private companies eager to IRM(information resource management). Especially, one of core elements in this IRM is sizing for information system. But, many cases of sizing is executed independently, even though hardware and software are very strongly connected, Many people say that it is not efficiency. In this paper, we have established the integrated sizing model for information system. The proposed model based on hardware sizing guidelines, announced by National Information Society Agency, and software price guidelines, announced by Korean software promotion agency.

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Characterization of Base Paper Properties on Coating Penetration

  • Kim, Bong-Yang;Douglas W. Bousfield
    • Journal of Korea Technical Association of The Pulp and Paper Industry
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    • v.35 no.5
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    • pp.17-25
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    • 2003
  • The influence of base paper properties and fiber type on coating penetration was studied in terms of characterization of coating holdout using two types of hand sheets as the base paper which were prepared from thermomechanical pulp (TMP) and hardwood bleached kraft pulp(KP) sized internally with alkyl ketene dimmer (AKD). Laboratory rod draw down coater was used for surface sizing and coating application. Characterization of coating penetration was done by measuring the roughness of the backside of coating layer. The backside of the coating was exposed by dissolving the fibers in a solution of cupriethylenedimine (CEO). Data show that internal sizing of base paper is effective and surface sizing is more effective to prevent coating penetration. Comparing between the two types of base papers, backside roughness of coating layer of TMP sheet is much larger and sizing is more effective to reduce coating penetration than those of KP sheet. From the result of water absorption and sizing degree after surface sizing, it seems that internal sizing slows down molecular diffusion much more than capillary penetration, but surface sizing reduces the capillary penetration. Furthermore, predominant mechanism of water into paper of TMP sheet seems to be capillary penetration, but it is molecular diffusion in the case of KP sheet.

Improvement of Coated Paper Properties by Surface Sizing with Cationic Polymers (양성고분자를 이용한 표면사이징을 통한 도공지의 물성 개선)

  • 전대구;이학래
    • Journal of Korea Technical Association of The Pulp and Paper Industry
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    • v.35 no.3
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    • pp.21-28
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    • 2003
  • It is essential to use base papers having proper surface characteristics in coating operation for improving coated paper quality and coater runnability. To fulfill these purposes surface sizing of coating base stock with anionic oxidized starch is commonly practiced. It is suggested that use of cationic starch for surface sizing rather than conventional oxidized starch will improve coated paper quality since cationic starch penetrates less into paper structure because of its strong electrostatic interaction with anionically charged paper surface. Strong interaction of cationic surface sizing starch with anionic coating color is expected to promote rapid immobilization of the coating color and improve coating holdout and optical property. The immediate objective of this study was to examine the influence of surface sizing starches on the properties of coated papers. Structural characteristics of the coatings formed on the substrate surface sized with cationic and anionic starches were examined. To enhance the efficiency of cationic surface sizing starch on coated paper properties, strongly charged cationic polymers were added to the surface sizing starch and its effect on coated paper properties was evaluated. Results showed that opacity and light scattering coefficient of coated paper were higher when base paper surface sized with cationic starch was used. Addition of less than 1% of cationic poly-DADMAC to the cationic surface sizing starch improved the opacity of coated paper significantly.

Determination and Application of Key Dimensions for a Sizing System of Glove by Analyzing the Relationshiops Between Hand Anthropometric Variables (손측정변수들 간의 연관성 분석을 통한 장갑설계의 중요변수 결정 및 치수체계 적용)

  • Gwon, O-Chae;Jeong, Gi-Hyo;Seon, Mi-Seon;Yu, Hui-Cheon;Kim, Hui-Eun
    • Journal of the Ergonomics Society of Korea
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    • v.23 no.3
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    • pp.25-38
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    • 2004
  • Selection of a key dimension (s) by considering the characteristics of hand dimensions is needed to design gloves and construct a sound sizing system for gloves The present study identified key dimensions of glove design by analyzing the relationships between hand dimensions and demonstrated the construction process of a glove sizing system. By conducting correlation and regression analyses on 70 hand dimensions including 3 key dimension candidates (hand length; hand circumference; hand breadth) with the 1988 US Army data, hand length and hand circumference were selected as key dimensions for glove design. Glove sizing systems were constructed for males and females by applying the selected key dimensions, 0.5 inch of sizing intervals, and 2% of presence rate criterion to the US Army data. This study suggests that glove sizing systems for males and females be very different from each other and a glove sizing system for males include more sizes than that for females.

Properties of Conductive Polymer Composite Films Fabricated under High Intensity Electric Fields : Effect of CF Sizing Treatment (고전기장을 이용한 전도성 고분자 복합필름의 제조 및 특성 연구 : 탄소섬유 Sizing처리가 탄소섬유/폴리에틸렌 필름의 특성에 미치는 영향)

  • 고현협;김중현;임순호;김준경;최철림
    • Polymer(Korea)
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    • v.25 no.2
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    • pp.293-301
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    • 2001
  • Electrically conductive carbon fiber/high density polyethylene (CF/HDPE) composite films were fabricated by new method, so called electron-ion technology (EIT) and the effects of CF epoxy sizing on the volumetric resistivity. tensile strength and interphase properties of the films were investigated. While epoxy sizing increased conductivity of composite films resulting from enhanced tunneling effect it reduced interphase adhesion between CF and HDPE because polar epoxy sizing and nonpolar HDPE are incompatible. Consequently epoxy sized CF(CF(S)) caused significant reduction in the volumetric resisitivity and tensile strength of composite films when compared with unsized CF(CF(U)). Epoxy sizing reduced nucleating efficiency of CF(S), therefore CF(S)/HDPE composite films showed nonuniform transcrystalline layer when compared with CF(U)/HDPE composite films.

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A Study on Garment Sizing Systems for Infants and Children (유아복과 아동복의 치수 규격에 관한 연구)

  • 이지연;천종숙
    • Journal of the Korean Society of Clothing and Textiles
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    • v.25 no.6
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    • pp.1046-1056
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    • 2001
  • For the purpose of standardizing sizing systems for infants and children's clothing, the researchers surveyed 20 different apparel manufacturers in Korea. The apparel production sizing systems used in the industry were analysed. The researchers also compared standard apparel sizing systems developed for infants and children's clothing in Korea. ISO, Japan, and U.S.A. The followings are the results of this study. 1. As survey findings of companies's views about sizing systems, boys or girls sizing system needed to be developed for 3 years old and over. The plus sizes are needed to be developed and children 9 years old and over need the plus size. 2. The body size specification in most sizing systems collected shows that chest circumference was increased 2cm for every infants sizes, and 3cm for boys and girls'sizes, from size 100 to size 130. However, the chest and waist circumference measurements were increased 4 to 8cm for large sizes, from size 130 to size 170. 3. There are similarity and dissimilarity among the standard sizing systems of ISO, Japan(JIS), U.S.A(ASTM), and Korea(KS). The ASTM developed infants'garment sizes for the babies who are 24months old and under. The most national standards, however, developed infant apparel sizing system for the babies under 105cm tall or 4 years old. 4. The range of body measurements covered by boys/girls sizing system were different by the nation. The U.S. system (ASTM) is for boys and girls who are taller than 120cm. The Japanese system(JIS) is for the children who are taller than 90cm.

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An Exploratory Study on Capacity Sizing Method for Information System: Focus on H/W Sizing in Pubic Sector (정보시스템 용량산정방식에 관한 탐색적 연구: 공공부문 H/W 규모산정을 중심으로)

  • Ra, Jong-Hei;Choi, Kwang-Don
    • Journal of Information Technology Services
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    • v.3 no.2
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    • pp.9-23
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    • 2004
  • Interest about Information infrastructure construction is enlarged socially according to arrival of information age, and various information systems are constructed for efficient business processing, customer service in public sector. According to subjective method for performance improvement for information system of public sector and engine that propel information system construction because it is no definite hardware sizing guidelines for information system caterer, is calculating resource volume of information system. It is situation that problem of excess of scale or reduce sizing is happening and is causing various kind of problems that is waste of information budget and service decline thereby. In this research, we proposed hardware sizing framework for information system that is applied to pubic sector.

Implementation of Intellectual Smart Sizing and Fitting System for Bike User (바이크 사용자용 지능형 Smart Sizing 및 Fitting 시스템 구현)

  • Yeon, Sang-Ho;Yoon, Dal-Hwan
    • The Journal of the Korea Contents Association
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    • v.13 no.5
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    • pp.451-458
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    • 2013
  • In this paper, we have developed an intellectual sizing and fitting system for bike user. In order to prevent the disease, we should adjust the bike's frame and select several components in the body size. Then it propose an extractions algorithm of avatar imagination with the cromakey method and realize the sizing and fitting.

A NEW CELL SIZING METHOD FOR AUTOMATIC UNSTRUCTURED GRID GENERATION USING CAD SURFACE DATA (CAD 형상 데이터를 이용한 비정렬 격자 자동 생성을 위한 격자셀 크기 지정 기법)

  • Lee, B.J.;Kim, B.S.
    • 한국전산유체공학회:학술대회논문집
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    • pp.120-125
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    • 2007
  • In this paper a new cell sizing method is proposed. The new method calculates cell size at a point using given size control elements directly without the aid of background grid as other cell sizing algorithms do. The calculation method and related definitions are described in detail, and typical cell sizing results are given.

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