• Title/Summary/Keyword: Material Standards

Search Result 1,064, Processing Time 0.033 seconds

Research on features of eco-friendly fashion products for the development of typology of eco-friendly fashion products (친환경 패션제품 유형분류체계 개발을 위한 친환경 패션제품 특성 연구)

  • Eunah Yoh
    • The Research Journal of the Costume Culture
    • /
    • v.32 no.1
    • /
    • pp.86-107
    • /
    • 2024
  • Although interest in eco-friendly fashion products is increasing among scholars and industry leaders, the concept of eco-friendly products remains unclear, preventing consistent assessment of which fashion products are eco-friendly. This study conducted a content analysis of eco-friendly product information from 87 domestic and 102 foreign brands to reveal key standards for categorizing eco-friendly fashion products. Product characteristic information was coded according to the four material-based standards (i.e., organic material, regenerative material, alternative material, and sustainably produced/upcycled material). Consistency between coders was confirmed by Cohen's kappa. In results, eco-friendly fashion products are categorized by four material-based standards and two certification standards (i.e., certified, not certified). Among the four material-based categories, the greatest number of domestic and foreign companies produced eco-friendly products that were classified as the regenerative material group. In addition, companies acquired eco-friendly certifications related to the use of organic, regenerative, and alternative materials. The greatest number of eco-friendly material brands used for eco-friendly fashion products belonged to the regenerative material group. Based on the study results, a typology of eco-friendly products was suggested. This typology can benefit practitioners and academics by highlighting a need for classification system for the eco-friendly fashion products, as well as by providing insight into the categorization of eco-friendly fashion products.

Development of a Nutritional Supplement Certified Reference Material for Elemental Analysis

  • Lee, Jong Wha;Heo, Sung Woo;Kim, Hwijin;Lim, Youngran;Lee, Kyoung-Seok;Yim, Yong-Hyeon
    • Mass Spectrometry Letters
    • /
    • v.9 no.4
    • /
    • pp.105-109
    • /
    • 2018
  • A certified reference material (CRM) for the analysis of inorganic nutrients in nutritional supplements has been developed. Accurate mass fractions of chromium (Cr), iron (Fe), copper (Cu), and zinc (Zn) were determined by isotope dilution inductively coupled plasma mass spectrometry (ID ICP/MS). The measurement results were used to assign certified values for the CRM, which were metrologically traceable to the definitions of the measurement units in the International System of Units (SI). Production of a candidate reference material (RM) and the certification processes are summarized. Each nutrient in the CRM showed good homogeneity, which was estimated using relative standard deviations of the measurement results of twelve bottles in a batch. This CRM is expected to be an important reference to improve reliability and comparability of nutrient analyses in nutritional supplements and related samples in analytical laboratories.

An improvement method of weapon system software standards material quality using virtualization technology (가상화 기술을 활용한 무기체계 소프트웨어 규격자료 품질향상 방안 연구)

  • Choi, Minkwan;Kook, Seunghak;Lee, Taeho
    • Journal of Software Engineering Society
    • /
    • v.29 no.1
    • /
    • pp.1-6
    • /
    • 2020
  • Recently, software has taken up an increasing share of the weapons system. The software development environment is also becoming very diverse. In the field of weapons software, software technical documents, source codes, and execution files are standardized as defense standards material. Through defense standards, the software file lists and development environments for creating software execution files are required to be documented. However, additional efforts to rebuild the software development environment are needed to recreate the software execution file based on defense standards material after the end of R&D. Therefore, in this study, we propose an improvement method for the quality of software standards material using virtualization technology. This is expected to reduce efforts to rebuild the software development environment and solve problems caused by discontinuation of the development environment.

Development and Its Properties of Resistance Standards for Using Alternative Current (교류저항 표준기 제작과 그 특성)

  • Kim, Han-Jun;Lee, Sang-Hwa;Kang, Jeon-Hong;Yu, Kwang-Min;Han, Sang-Ok
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
    • /
    • 2009.06a
    • /
    • pp.267-268
    • /
    • 2009
  • Resistance standards from 1 ${\Omega}$ to 100 $k{\Omega}$, with calculable frequency dependencies of up to 1 MHz, have been developed for the calibration of commercial inductance-capacitance-resistance (LCR) meters and impedance analyzers. The resistors are designed on the basis of single bifilar loops. The typical resistance change from dc to 1 MHz is from 200 to $800\;{\mu}{\Omega}/{\Omega}$. According to the measurement results, the frequency dependencies of the resistors are severaltimes lower than the measurement uncertainty of commercial LCR meters.

  • PDF

The Suitability Assessment of Performance Standards on Landscaping Rocks of GRS(Glass Fiber Reinforced Slag) Panels (유리섬유강화슬래그(Glass-fiber Reinforced Slag)의 경관석 성능 적합성 평가)

  • Yoon, Bok-Mo;Lee, Yong-Bok;Koo, Bonhak
    • Journal of the Korean Society of Environmental Restoration Technology
    • /
    • v.16 no.2
    • /
    • pp.127-135
    • /
    • 2013
  • This study was carried out to verify the suitability of GRS(Glass-fiber Reinforced Slag) as natural type landscape stone according to the material property and structural safety performance standards. The structural safety performance of the GRS panel showed 12.4MPa and 16.2MPa each in flexural strength at 2 and 3% content of glass fiber while the flexural strength at 4 and 5% of glass fiber content showed 26.9MPa, and 30.2MPa, respectively, all satisfying the standards. In addition, air-dried gravity was found to be 1.82~1.89 in measuring range at 2~5% level of glass fiber content, satisfy the existing standards 1.8~2.3. In structural safety performance, the range of flexural strength consequent on glass fiber content was surveyed to be 12.8~30.2MPa, all satisfying the performance standards, while 10MPa and more while the compressive strength range was found to be 41.5~53.3MPa, all satisfying the performance standards, 40~60MPa. This study judged the suitability of only the items for a property of matter of landscape stone GRS by applying the natural-form landscape stone GFRC material standard, but in case an installation constructed with GRS material comes into existence later, there should be comprehensive performance guidelines through the research on durability, landscape performance and environmental and ecological performance.

A Study on Improvement of Safety Standards for Commercial Gas Burning Appliances (업무용대형연소기 안전기준 개선방안 연구)

  • Choi, Suel-Ki;Ahn, Hyun-Soo;Lee, Chang-Eon;Kim, Young-Gu
    • 한국연소학회:학술대회논문집
    • /
    • 2014.11a
    • /
    • pp.309-310
    • /
    • 2014
  • Commercial gas burning appliances are classified by KGS AB338. Even though there are many types of gas appliances with different purposes and uses, common standards are applied to the appliances. Manifold of commercial gas range could often be corroded by salt water. Gas leaks and accidents could be occurred by the corrosion. According to suggestion of detailed material standards for manifold of commercial gas range, it could help to use safely and prevent gas accidents.

  • PDF

The Educational Idea Presenting In the SLMP's Standards (미국학교도서관기준에 나타난 SLMP의 교육적 이념)

  • Kim Hyo-Jung
    • Journal of the Korean Society for Library and Information Science
    • /
    • v.12
    • /
    • pp.121-147
    • /
    • 1985
  • In the modern communicative age, the standards of the school libraries are the qualitative guarantee on the services of school libraries or school library media programs, as the guidline, the active guide, the policy documentation and criteria for the professional excellence. The standards of SLMP were revised the sixth time by the school library profession(ALA) with the members or agency of NEA in the U.S. There are the first standard was a quantitative; 'the Certain Report'(by A.L.A., 1920) appearing that the school library is the heart of the school, 2nd 1925; turning up the teaching material source and personel, 'School Libraries for today and tomorrow' (by AASL, 1945) incluseing the instructional materials and the 7th educational ideas in the quantitative feature, 'Standards for School Library Programs' (by AASL, 1960) expressing the instructional material center, communicative environment, learning and teaching laboratory, 'Standards for school media programs' (by DAVI & AASL, 1969) implicating the instructional resource, learning and teaching laboratory, the condition precedent of qualitative education for excellence, 'Standards for media programs; District/school (by AASL & AECT, 1975) containing the improving user's educational experience and personal freedom on the use of SLMP's services. Through changing the standards of SLMP in the US, We have known that the main educational idea in the standards are; (1) SLMP is the instructional force and resource for qualitative, excellence education by learning and teaching laboratory, instructional resource, communicative environment (2) SLMP is the actualizing force and resource for user's self-realization by intellectual and personal excellence, individualizing, humanizing and personalizing education.

  • PDF