scholarly journals Improvised Long Test Lengths via Stitching Scale Bar Method:

2020 ◽  
Vol 125 ◽  
Author(s):  
Vincent D. Lee ◽  
Daniel Sawyer ◽  
Muralikrishnan Bala
Keyword(s):  
International Standards ◽  
Minimum Length ◽  
Laser Tracker ◽  
Test Length ◽  
American Society ◽  
International Standards Organization ◽  
Interim Testing

Performance verifications of laser tracker systems (LTSs) often rely on calibrated length artifacts that are 2.3 m in length or more, as specified in International Standards Organization (ISO) and American Society of Mechanical Engineers (ASME) standards. The 2.3 m length is chosen as the minimum length that will sufficiently expose inaccuracy in LTSs. Embodiment of these artifacts often comes in the form of scale bars, fixed monuments, or a laser rail. In National Institute of Standards and Technology (NIST) Internal Report (IR) 8016, which was published in 2014 and discusses interim testing of LTSs, it was shown that a scale bar with three nests spaced 1.15 m apart was sufficient for exposing errors in LTSs. In that case, the LTS was placed symmetrically with respect to the scale bar so that both a 2.3 m symmetrical length and a 1.15 m asymmetrical length were presented to the LTS. This paper will evaluate whether a scale bar that is only 1.15 m in length can sufficiently expose errors within the LTS when it is stitched together to create a 2.3 m long test length.

Revising and Validating Spectral Irradiance Reference Standards for Photovoltaic Performance Evaluation

Solar Energy ◽  
2002 ◽  
Author(s):  
Daryl R. Myers ◽  
Keith Emery ◽  
C. Gueymard
Keyword(s):  
Photovoltaic Performance ◽  
International Standards ◽  
Spectral Irradiance ◽  
International Electrotechnical Commission ◽  
Spectral Radiation ◽  
Atmospheric Physics ◽  
Additional Information ◽  
American Society ◽  
Consensus Standard ◽  
International Standards Organization

In 1982, the American Society for Testing and Materials (ASTM) adopted consensus standard direct-normal and global-tilted solar terrestrial spectra (ASTM E891/E892). These standard spectra were intended to evaluate photovoltaic (PV) device performance and other solar-related applications. The International Standards Organization (ISO) and International Electrotechnical Commission (IEC) adopted these spectra as spectral standards ISO 9845-1 and IEC 60904-3. Additional information and more accurately representative spectra are needed by today’s PV community. Modern terrestrial spectral radiation models, knowledge of atmospheric physics, and measured radiometric quantities are applied to develop new reference spectra for consideration by ASTM.

An Update on Standards Activity for Txrf and the Challenges Ahead

1995 ◽  
Vol 39 ◽  
pp. 767-770
Author(s):  
R. S. Hockett
Keyword(s):  
Surface Analysis ◽  
Technical Committee ◽  
International Standards ◽  
International Scale ◽  
The Status ◽  
American Society ◽  
International Standards Organization

Standards organizations active in surface analysis using TXRF and VPD/TXRF include: (a) American Society for Testing and Materials (ASTM), (b) Semiconductor Equipment and Materials International (SEMI), (c) Ultra Clean Society of Japan (UCS), and (d) International Standards Organization Technical Committee 201 (ISO TC/201). The standards activities are presently dynamic, and they are on an international scale, This paper provides an update on the status of these activities, and presents the challenges ahead yet to be resolved.

Revising and Validating Spectral Irradiance Reference Standards for Photovoltaic Performance Evaluation

2004 ◽  
Vol 126 (1) ◽  
pp. 567-574 ◽  
Author(s):  
Daryl R. Myers ◽  
Keith Emery ◽  
C. Gueymard
Keyword(s):  
Photovoltaic Performance ◽  
International Standards ◽  
Spectral Irradiance ◽  
Device Performance ◽  
International Electrotechnical Commission ◽  
Spectral Radiation ◽  
Atmospheric Physics ◽  
Additional Information ◽  
American Society ◽  
International Standards Organization

In 1982, the American Society for Testing and Materials (ASTM) adopted consensus standards for direct-normal and hemispherical (“global”) tilted solar terrestrial spectra (ASTM E891/E892/G159). These standard spectra were intended to evaluate photovoltaic (PV) device performance and other solar-related applications. The International Standards Organization (ISO) and International Electrotechnical Commission (IEC) adopted these spectra as spectral standards ISO 9845-1 and IEC 60904-3. Additional information and more accurately representative spectra are needed by today’s PV community. Modern terrestrial spectral radiation models, knowledge of atmospheric physics, and measured radiometric quantities are applied to develop new reference spectra under consideration by ASTM.

ISO Human-Computer Interaction Standards: Finding Them and What They Contain

2020 ◽  
Vol 64 (1) ◽  
pp. 400-404
Author(s):  
Paul Green
Keyword(s):  
Human Computer Interaction ◽  
Systems Engineering ◽  
User Interfaces ◽  
Task Force ◽  
Technical Committee ◽  
International Standards ◽  
Human System ◽  
International Standards Organization ◽  
Browsing Tool ◽  
Computer Interaction

An HFES Task Force is considering if, when, and which, HFES research publications should require the citation of relevant standards, policies, and practices to help translate research into practice. To support the Task Force activities, papers and reports are being written about how to find relevant standards produced by various organizations (e.g., the International Standards Organization, ISO) and the content of those standards. This paper describes the human-computer interaction standards being produced by ISO/IEC Joint Technical Committee 1 (Information Technology). Subcommittees 7 (Software and Systems Engineering) and 35 (User Interfaces), and Technical Committee 159, Subcommittee 4 (Ergonomics of Human-System Interaction), in particular, the contents of the ISO 9241 series and the ISO 2506x series. Also included are instructions on how to find standards using the ISO Browsing Tool and Technical Committee listings, and references to other materials on finding standards and standards-related teaching materials.

scholarly journals Development of ASTM Standards in Support of Advanced Ceramics — Continuing Efforts

1998 ◽  
Author(s):  
Charles R. Brinkman
Keyword(s):  
International Standards ◽  
Material Behavior ◽  
Composite Ceramics ◽  
Advanced Ceramics ◽  
Component Reliability ◽  
Nondestructive Examination ◽  
Analysis And Design ◽  
Optimum Material ◽  
American Society ◽  
Statistical Analysis And Design

An update is presented of the activities of the American Society for Testing and Materials (ASTM) Committee C-28 on Advanced Ceramics. Since its inception in 1986, this committee, which has five standard producing subcommittees, has written and published over 32 consensus standards. These standards are concerned with mechanical testing of monolithic and composite ceramics, nondestructive examination, statistical analysis and design, powder characterization, quantitative microscopy, fractography, and terminology. These standards ensure optimum material behavior with physical and mechanical property reproducibility, component reliability, and well-defined methods of data treatment and material analysis for both monolithic and composite materials. Committee C-28 continues to sponsor technical symposia and to cooperate in the development of international standards. An update of recent and current activities as well as possible new areas of standardization work will be presented.

scholarly journals The Noise Level Measurements of Children’s Sound Books

2021 ◽  
Vol 17 (4) ◽  
pp. 371-379
Author(s):  
Seok-Hee Joo ◽  
Eun-Yeong Shin
Keyword(s):  
Hearing Loss ◽  
External Auditory Canal ◽  
Noise Level ◽  
Sound Intensity ◽  
International Standards ◽  
Children's Books ◽  
Children’S Books ◽  
Hearing Rehabilitation ◽  
Children's Book ◽  
International Standards Organization

Purpose: It was intended to measure the sound intensity of children's sound books and to compare them with the standards of Korea and the International Standards Organization (ISO).Methods: The loudness of 15 children’s sound books was measured at a distance of 25 cm (child’s arm length), and 2.5 cm length of external auditory canal. Measurements taken three times with each book were performed, and the overall sound intensity of the sound books and the sound intensity of each button were measured and compared.Results: Compared with the Korean standard, all the buttons of all books exceeded the standard for the sound volume of the children’s book measured at a distance of 2.5 cm. When comparing the maximum sound intensity measured at a distance of 25 cm with 85 LAmax, a total of 168 buttons of these, 25 (14.88%) were recorded as exceeding the maximum loudness. According to the standards of the ISO, all buttons in all books were below the standard 85 LAeq.Conclusion: Several children’s books are loud enough to cause noise-induced hearing loss, especially when they are placed close to the ear. Strict standards for sound children’s books are required, and it is important to put a warning on the cover of the book. It is expected that the sound intensity of the children’s sound book presented in this study can be referenced when referring to the loudness during hearing rehabilitation in children.

E-Government Services in India

2015 ◽  
pp. 117-126
Author(s):  
Santhosh Menon ◽  
Jaspreet Singh Sethi
Keyword(s):  
Open Source ◽  
Open Source Software ◽  
Critical Analysis ◽  
International Standards ◽  
Government Services ◽  
Free Open Source Software ◽  
The Government ◽  
International Standards Organization ◽  
Free Open Source

The study will focus on technological components of the Indian Aadhaar program which tries to give every resident of the country a digital ID. The paper provides the architectural and implementation features of the program. Aadhaar program is only 40% implemented to date as mandated by the Government of India. Aadhaar is mostly based on Free Open Source Software (FOSS) and its processes are International Standards Organization (ISO) compliant. The paper would do a critical analysis of the architectures of the ID programs.

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