• Title/Summary/Keyword: Test Standards

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Reliability Test Assessment Technique for Pressure Compensation Type Hydraulic Pump (압력보상형 유압펌프 신뢰성 시험평가 기술)

  • Jung, Dong-Soo
    • Journal of Applied Reliability
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    • v.11 no.4
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    • pp.371-385
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    • 2011
  • Because consumer mostly utilizes company test standard, supplier spends burden of expenses on building test equipments and managing expert manpower to fulfill consumer's various tests. Therefore, it is urgent to standardize test assessment which has a bond of sympathy between consumer and supplier and evaluates reliability of their products. This study develops reliability assessment standard which is composed of 12 test items considering international and domestic test standards, company internal test standards of consumer companies and field conditions. Also this study introduces overall technical procedure on accelerated test with no failure which is used for the main technology of reliability assessment. To verify effectiveness of reliability assessment, the test results are herein analyzed through building the test equipments and performing the test items.

A Detailed Method for Establishing Organizational Software Test Policy and Strategy (조직의 소프트웨어 테스트 정책 및 전략 수립 구체화 방안)

  • Jung, Jae-Yong;Kim, Hyeon Soo
    • Journal of the Korea Institute of Military Science and Technology
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    • v.22 no.6
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    • pp.784-796
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    • 2019
  • As the size and complexity of software increases, it is important to ensure the quality of software through testing. Many organizations refer to international standards or test process models to improve the quality of software through establishing a systematic test process. However, these standards and process models provide general processes that do not reflect the characteristics of the domain or the organization's test policies and strategies. To establish a test process that reflects the characteristics of the organization, test policies and strategies based on the organization's quality objectives and the organizational and domain characteristics should be reflected. This study proposes specific methods for eliciting activities and information to establish organizational software test policies and strategies that are essential to establishing a test process that reflects the characteristics of the organization and the system.

Study of Performance Test Methods for RFID Devices Using Ontology Concept (온톨로지 기법을 이용한 RFID 장비성능 측정체계 및 방법)

  • Kwon, Hyun-Soo;Chang, Yoon-Seok
    • Journal of The Institute of Information and Telecommunication Facilities Engineering
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    • v.8 no.3
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    • pp.144-151
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    • 2009
  • In this paper, we consider various international and local standards and applied ontology concepts which are used in Semantic Web, to make more structured test methods/procedure. Based on the ontology concept, we classify test method as three categories (i.e., conformance test, interoperability test and performance test), and make test structures for each category. We believe that this research provides test methods which reflect various standards as well as the guidelines for users to construct RFID device software more structurally.

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Development of National Curriculum-Based Assessment Standards and Instruments for High School Common Science (국가 교육과정에 근거한 공통과학 평가 기준 및 평가 도구 개발 연구)

  • Lee, Yang-Rak;Lee, Sun-Kyung;Hong, Mi-Young;Hong, Jae-Sig
    • Journal of The Korean Association For Science Education
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    • v.19 no.1
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    • pp.159-172
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    • 1999
  • This is the second year study of ''The Development of Model of National Criterion- Referenced Assessment Standards" that had started in 1997. In the study, national assessment standards for high school common science were developed based on national curriculum. In the whole process of developing the standards, high school teachers, university professors and administrators of the Ministry of Education have participated as the "developing group" or "consulting group". Through various activities such as conference, workshop, intensive work, examination by science education experts, the standards and instruments were developed and modified. The research contents can be itemized as follows: - modifying the achievement standards developed in the first year research based on the opinions of various experts(science teachers, professors of science education, philosophers) - developing assessment standards based on the specially designed system. The standards divide students' achievements into three levels(upper/middle/low) and state each level so that it can guide evaluation of achievement. - developing various types of test instruments to probe students' achievement levels for each assessment standard.

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Audiometric Calibration of Aural Acoustic Immittance Instrument: A Review of Acoustic Immittance Instrument's Calibration

  • Kim, Jin-Dong
    • Biomedical Science Letters
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    • v.22 no.4
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    • pp.115-126
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    • 2016
  • Audiometric calibration is a prerequisite for securing the reliability of audiometric test results by checking the internal consistency of the relevant instrument. The purpose of this review is to help instrument operators understand the calibration procedure of aural acoustic immittance instrument which is frequently used for objective assessment. By referring to the latest international standards and the national standards relevant to the aural acoustic immittance instrument, the following parameters will be reviewed: 1) introduction of performance characteristics, 2) detailed procedure of the calibration method. According to the newest international and national standards [IEC 60645-5 (2004), ANSI S3.39-1987 (R2012)], the aural acoustic immittance instrument basically includes six components: 1) calibration cavity, 2) acoustic immittance analysis system, 3) probe assembly/unit and signal, 4) pneumatic air-pressure pump system, 5) acoustic reflex activator system and 6) tympanogram and acoustic reflex plotting system, each of these components should meet set standards. The result of behavioral hearing tests is influenced by various complex factors including the examinee's cooperation, background noise of the examination room, measurement method, skill level of the audiologist and calibration status, but the objective hearing tests is more influenced by the calibration status of the instrument than any other factors. The audiologist should take full responsibility for the reliability of the hearing test result, so he/she should carry out the calibration check and adjustments of aural acoustic immittance instrument periodically and maintain the instrument continuously by referring to the newest standards and the manufacturer's instruction manual.

A Study on the Disclosure Method of Major Topics in Response to the ESG Management Disclosure Transition-Focused on the Oil and Gas Industry (ESG경영 공시전환에 대응하는 중대토픽 공시방법 연구-석유와 가스산업 중심으로)

  • Park, TaeYang
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.45 no.1
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    • pp.53-70
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    • 2022
  • Recently, due to the change to SASB(Sustainability Accounting Standards Board) and GRI(Global Reporting Initiative) Standards 2021, the paradigm for non-financial information disclosure is changing significantly, with the number of ESG topics and indicators that must be disclosed by industry from an autonomous material topic selection method. This study revealed that the number of compulsory topics in the oil and gas industry by GRI standards 2021 is up to 2.4 times higher than the average number of material topics disclosed when domestic companies publish sustainability reports using GRI Standards 2020. In the oil and gas industry, I analyzed the similarities and differences between the GRI standards 2021 and the ESG topics covered by SASB by environmental, social, economic, and governance areas. In addition, the materiality test process, which is different in GRI standards 2021, is introduced, and the issues included in the following 10 representative ESG-related initiatives are summarized into 62 and suggested improvement plans for materiality test used in the topic pool.

A Study on Floor Slip Resistance Standard and Test Method for BF Certification (BF인증을 위한 바닥 마감재 미끄럼 성능기준 및 측정방법에 대한 연구)

  • Shin, Dong-Hong;Seong, Ki-Chang;Park, Kwang-Jae
    • Journal of The Korea Institute of Healthcare Architecture
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    • v.25 no.3
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    • pp.75-83
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    • 2019
  • Purpose: There are no clear criteria for slip performance in the BF certification process, so the evaluator relies on subjective judgments depending on the field situation. Physical criteria for determining the slip performance of various floor finishes are not clear. C.S.R., the only criterion currently being used to check slip performance, may raise questions about its coverage, feasibility and reliability. Method: For an analysis of domestic standards and status, KS L 1001, KS M 3510, and KS F 2375. External standards are analyzed for ADA Standard, ANSI Standard, and BS EN Standard. Analyze the test methods and evaluation criteria of O-Y-PSM, BPT, and the dynamic slip resistance test used in these criteria. It also presents an improvement plan for the rational presentation of standards. Results: To date, various kinds of test methods and measuring devices of the slip resistance coefficient have been developed, but there are not many ways to trust useful results related to user safety. Reliability and thoroughly verified test methods and criteria should be used to assess the slip performance of the floor. In order to improve the standard for the evaluation of slip performance in Korea, the existing standard should first be raised to the same level as the overseas standard, and the application of the discriminatory standard should be applied considering the characteristics and usage patterns of each space. Implication: Currently, Korean standards propose various test methods, but the proper use of test methods, scope and assessment criteria are not established, so improvement of the comprehensive standard is necessary.

Environmental Testing for Precision Parts and Instruments (정밀부품 및 기기에 대한 환경시험기술)

  • Choi, Man-Yong;Park, Jeong-Hak;Yun, Kyu-Tek
    • Journal of the Korean Society for Nondestructive Testing
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    • v.21 no.6
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    • pp.642-649
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    • 2001
  • Precision parts and instruments are tested to evaluate performance in development-process and product-step to prement a potential defect due to a failure design. In this paper, Environmental test technology, which is the basis of reliability analysis, is introduced with examples of test criterion, test method for products, encoder and traffic signal controller, and measuring instruments. Recently, as the importance of the environmental test technology is recognised. It is proposed that tranining of test technician and technology of jig design and failure analysis are very essential.

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Long-Term Reliable Test of Photovoltaic Modules (태양광모듈의 장기적 신뢰성 실험)

  • Kim, Kyung-Soo;Kwon, Oh-Eun;Kang, Gi-Hwan;Yu, Gwon-Jong;Yoon, Soon-Gil
    • Proceedings of the KIEE Conference
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    • 2011.07a
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    • pp.1405-1405
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    • 2011
  • Sudden earthquake is changing national energy stratagem for future energy resource. In case Germany, current nuke power station will be shut down with several decades. Newly constructed build in Japan must have photovoltaic system as a obligations.. As a long-term sustainable energy one, PV should give confidence to customers up to more than 20 years. Today, IEC 61215 and IEC 61646 standards are representative one for ensuring performance and safety of PV module. But it is still needed to develop more realistic test method. For example, if we think about extreme condition like desert and North Pole, the temperature condition describe in test standards can have little effect on life time expectation of PV module. Installation speed of PV system is very high, but establishing test standards are very complex and not easy. So in this paper, I tried to open the long-term test method for PV module to ensure 25 year's old life time. It is just starting point of PV related long-term test methods. The specific and technical explanation will be shown in the following paper in detail.

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