• 제목/요약/키워드: sizing

검색결과 1,255건 처리시간 0.066초

Studies on the Development of Rosin Sizing Effect by means of ESCA - Difference in the Fixing of Soap Type Rosin Sizing and Emulsion Type Rosin Sizing -

  • Yasushi Ozaki;Atsushi Sawatari
    • 한국펄프종이공학회:학술대회논문집
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    • 한국펄프종이공학회 1999년도 Pre-symposium of the 10th ISWPC Recent Advances in Paper Science and Technology
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    • pp.338-342
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    • 1999
  • It has been proven in previous work that rosin sizing agents are distributed relatively homogeneously on the outer surface of paper. Therefore, rosin sizing agents on paper surfaces can be characterized by macro domain measurement techniques with very thin layer from the surface. In this work, the role of rosin sizing agents on paper surface was investigated by comparing wettability from contact angle measurement with the chemical state of the outermost surface by the ESCA. Furthermore, the role of rosin on the surface of paper was discussed by the quantity of hydroxyl groups obtained from chemical modification with the TFAA-ESCA technique. It was found from the ESCA data that the fixing mechanism with soap-type rosin sizing is different from that with emulsion-type rosin sizing.

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

  • 김경철;김철환;이지영;;박현진;김성호;심성웅;조후승
    • 한국펄프종이공학회:학술대회논문집
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    • 한국펄프종이공학회 2011년도 추계학술발표회 논문집
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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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정보시스템 통합 규모산정 모형설정에 관한 연구 (A study on Integrated Sizing model for Information System)

  • 나종회;최광돈;최영진;문성준
    • 디지털융복합연구
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    • 제5권2호
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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
    • 펄프종이기술
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    • 제35권5호
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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.

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

  • 전대구;이학래
    • 펄프종이기술
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    • 제35권3호
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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.

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

  • 이지연;천종숙
    • 한국의류학회지
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    • 제25권6호
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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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바이크 사용자용 지능형 Smart Sizing 및 Fitting 시스템 구현 (Implementation of Intellectual Smart Sizing and Fitting System for Bike User)

  • 연상호;윤달환
    • 한국콘텐츠학회논문지
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    • 제13권5호
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    • pp.451-458
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    • 2013
  • 본 논문에서는 전문가용 Bike를 위한 sizing 및 fitting 시스템을 구현한다. 수동으로 신체의 사이즈를 측정하여 그에 맞는 프레임을 선정하여 산악용 바이크를 제작함으로써 많은 시간이 걸린다. 이 비해 신체의 조건을 자동측정하고 자전거의 프레임과 여러 가지 부품을 세팅함으로써 시간절약은 물론 무리한 운동으로 오는 질병을 예방할 수 있다. 본 연구는 신체의 자동측정을 위하여 크로마키 기법을 이용한 피사체의 아바타 영상정보 추출을 통하여 사이징(sizing)과 피팅(fitting)을 실시하는 알고리즘을 제시한다. 이때 사용자는 정보를 손쉽게 취득할 수 있고, 필요에 따라 그 정보를 활용함으로써 사용자는 고객관리 뿐만 아니라 보다 신속하고 정확한 데이터 관리에 충실함으로써 시간절약은 물론 서비스를 원활히 할 수 있다.

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

  • 나종회;최광돈
    • 한국IT서비스학회지
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    • 제3권2호
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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.

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

  • 이봉주;김병수
    • 한국전산유체공학회:학술대회논문집
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    • 한국전산유체공학회 2007년도 추계 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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손측정변수들 간의 연관성 분석을 통한 장갑설계의 중요변수 결정 및 치수체계 적용 (Determination and Application of Key Dimensions for a Sizing System of Glove by Analyzing the Relationshiops Between Hand Anthropometric Variables)

  • 권오채;정기효;선미선;유희천;김희은
    • 대한인간공학회지
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    • 제23권3호
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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.