• 제목/요약/키워드: Test and evaluation

검색결과 14,930건 처리시간 0.039초

턱관절균형의학의 기본 진단검사법 (Diagnostic Evaluation Methods in TMJ Balancing Medicine)

  • 이영준;인창식
    • 턱관절균형의학회지
    • /
    • 제3권1호
    • /
    • pp.27-30
    • /
    • 2013
  • Diagnostic evaluation methods frequently adopted in Temporomandibular Balancing Medicine (TBM) are briefly reviewed as to their basic concepts and procedures. TBM diagnostic evaluation methods may be classified into direct and indirect ones. Indirect methods are to observe any change in the manifestations with regard to the (1) posture, (2) pain, (3) muscle strength, and (4) stretching. Direct methods are to evaluate through (1) cervical palpation test, (2) restricted cervical rotation test, and (3) lateral cervical tension test. These methods may provide clinicians valuable information on the current yinyang balance and potential therapeutic factors in relation with the temporomandibular joint, a meridian system, and the whole body.

  • PDF

한국형발사체 7톤급 액체로켓엔진 냉각 특성 (Cool Down Characteristics of 7 Tonf-class Liquid Rocket Engine for KSLV-II)

  • 임지혁;유병일;이광진;한영민
    • 한국추진공학회지
    • /
    • 제25권1호
    • /
    • pp.50-57
    • /
    • 2021
  • 한국형발사체에 사용되는 액체로켓엔진과 같이 극저온 추진제를 사용하는 엔진은 시험 전 시험설비 배관 및 엔진 냉각이 필수적으로 선행되어 엔진 입구 온도를 만족시켜야 한다. 본 논문에서는 한국형발사체 7톤급 액체로켓엔진의 시험 전 냉각 단계에서 소모되는 액체산소의 양을 확인하였고, 시험설비 배관 및 엔진 냉각특성을 평가하였다.

Re-ignition System using Vacuum Triggered Gap-switch for Synthetic Breaking Test

  • Park Seung-Jae;Suh Yoon-Taek;Kim Dae-Won;Kim Maeng-Hyun;Song Won-Pyo;Koh Hee-Seog
    • KIEE International Transactions on Electrophysics and Applications
    • /
    • 제5C권4호
    • /
    • pp.145-151
    • /
    • 2005
  • The synthetic breaking test method was developed to evaluate the breaking performance of ultra high-voltage circuit breaker and made up of two independent circuits; current source circuit and voltage source circuit. In application of this test method, it is necessary to extend the arc of the test breaker. So, the new re-ignition system using VTGS (Vacuum Triggered Gap-Switch) was constructed to improve the efficiency and reliability of this test. In this re-ignition system, VTGS operates in high vacuum state of $5{\time}10^{17}$torr and control system consists of the triggering device and the air M-G (Motor-Generator). This re-ignition system showed the operating characteristics, such as delay time ($t_d$) and jitter time ($t_j$ not exceeding 5us and 1us respectively, and had the operating voltage of $25\~150kVdc$ at the gap distance of 24mm.

DEVELOPMENT OF A SOUND QUALITY INDEX FOR THE EVALUATION OF BOOMING NOISE OF A PASSENGER CAR BASED ON REGRESSIVE CORRELATION

  • LEE J. K.;PARK Y. W.;CHAI J. B.;JANG H. K.
    • International Journal of Automotive Technology
    • /
    • 제6권4호
    • /
    • pp.367-374
    • /
    • 2005
  • This paper proposes a sound quality index to evaluate the vehicle interior noise. The index was developed using a correlation analysis of an objective measurement and a subjective evaluation data. First, the objective set of measurements was obtained at two specified driving conditions. One is from a wide-open test condition and the other is from a constant-speed test condition. At the same time, subjective evaluation was carried out using a score of ten scale where 17 test engineers participated in the experiment. The correlation analysis between the psycho-acoustic parameters derived from the objective measurement and the subjective evaluation was performed. The most critical factors at both test conditions were determined, and the corresponding equations for the sound quality were obtained from the multiple factor regression method. Finally, a comparative work between previous index and present index was performed to validate the effectiveness of the proposed index.

영-한 기계번역 성능 평가 연구 (Towards a Methodology for Evaluating English-to-Korean Machine Translation Systems)

  • 시정곤;김원경;고창수
    • 한국언어정보학회지:언어와정보
    • /
    • 제4권2호
    • /
    • pp.1-26
    • /
    • 2000
  • The purpose of this paper is to establish the standard method of evaluation English-to-Korean MT systems We focus on test suites, evaluation procedure and evaluation results. Four computer programs on the market are tested on a test suite consisting of 1,501 sentence, The quality of translation and the capacity of MT system are the key points for evaluation . The sentences in the suite are classified according to the grammatical properties they reveal. The classificatory scheme has the structure of a directory: each sentence belongs to a subclass, which belongs to a major class,. We place the sentences in the test suite on a scale of difficulty (hard ordinary easy) and each output sentence is graded on a scale of four accuracy levels. We also test the programs with respect to their speed.

  • PDF

치과용 시술기구(Micro Handpiece)재료의 특성평가 및 표면품질에 대한 연구 (Study on Evaluation of Material Property of Micro Handpiece for dentistry and Surface Quality)

  • 손재환;한창우;최상일;김용중;최창진
    • 한국산업융합학회 논문집
    • /
    • 제9권3호
    • /
    • pp.221-228
    • /
    • 2006
  • As Industrialization gets more and more advanced, human technological medical apparatus for dentistry has been developed. Such a medical apparatus have to let precision revolution and torque control facilitate. Consequently, Development of Micro hand-piece with strong durability should be required. Moreover, It's also very important to evaluate performance of such a Micro hand-piece, Evaluation of Mechanical property of Material and ANOVA have been known as useful methods in the field of Quality Evaluation. For Verification of Quality Evaluation, It has been evaluated by One-way layout ANOVA based on the data of Surface Roughness Test. Anyhow, This test has been respectively carried out by 3 kinds of Test and Superior performance has appeared in the Test result.

  • PDF

무기체계 정비성 향상을 위한 BIT 설계 및 검증 방안 (Improvements in Design and Evaluation of Built-In-Test System)

  • 허완욱;박은심;윤정환
    • 한국군사과학기술학회지
    • /
    • 제15권2호
    • /
    • pp.111-120
    • /
    • 2012
  • Built-In-Test is a design feature in more and more advanced weapon system. During development test and evaluation(DT&E) it is critical that the BIT system be evaluated. The BIT system is an integral part of the weapon system and subsystem. Built-In-Test assists in conducting on system and subsystem failure detection and isolation to the Line Replaceable Unit(LRU). This capability reduces the need for highly skilled personnel and special test equipment at organizational level, and reduces maintenance down-time of system by shortening Total Corrective Maintenance Time. During DT&E of weapon system the objective of BIT system evaluation is to determine BIT capabilities achieved and to identify deficiencies in the BIT system. As a result corrective actions are implemented while the system is still in development. Through the use of the reiterative BIT evaluation the BIT system design was corrected, improved, or updated, as the BIT system matured.

SAFETY EVALUATION OF SUNSCREENS (I) ; CORRELATION BETWEEN SUN PROTECTION FACTOR AND SKIN IRRITATION

  • Suh, Soo-Kyung;Kim, Jong-Won;Park, Ju-Young;Seo, Kyung-Won;Park, Chang-Won;Kim, Kyu-Bong;Kim, Kwang-Jin;Kim, Jong-Min;Lee, Sun-Hee
    • 한국독성학회:학술대회논문집
    • /
    • 한국독성학회 2002년도 Current Trends in Toxicological Sciences
    • /
    • pp.138-138
    • /
    • 2002
  • In recent years, the safety of sunscreens has been challenged based on the reports of its adverse effect on users; dermatitis, allergic contact dermatitis, photoallergic contact dermatitis. To investigate a correlation between sun protection factor (SPF) and the safety of sunscreens, we measured in vitro SPF index using homosalate as a standard and examined the toxicity tests on cosmetics; primary and cumulative skin irritation tests, ocular irritation test, and skin sensitization test.(omitted)

  • PDF

의복관련 맞음새 평가에 관한 연구동향 - 2000~2016년 국내학회지를 중심으로 - (Trend of Studies on the Evaluation of Clothing Fit - Focusing on Domestic Research Journals of 2000~2016year -)

  • 이진희;김윤희
    • 한국의상디자인학회지
    • /
    • 제18권4호
    • /
    • pp.159-170
    • /
    • 2016
  • This study is aimed to research the trend of studies on the evaluation of clothing fit using the domestic research journals. clothing fit has long been regarded as the most important element to customers in clothing appearance. Understanding fit from a consumer's perspective is complex. 85 articles were collected from domestic academic sites (KISS, DBpia, KiSTi). Many clothing fit articles published on the 2011-2016 year. In research target, young women were more than other age groups. On the evaluation of clothing fit, method of clothing fit classified survey using the questionnaire and wearing test. Many articles were used the survey using the questionnaire, 57.7%. The other articles were used wearing test with professional analyst and objective evaluation tool. Objective evaluation was used 3D virtual wearing systems (i-designer, DC suit, CLO et al). In the survey using the questionnaire and wearing test using the objective evaluation, jacket and pants were researched on the clothing items mainly. Many young women put on the jacket and pants to active energetically. In the future, researches related clothing fit need to develop the objective and accuracy evaluation tool of clothing fit.

  • PDF

대형 트럭 반능동형 캐빈 공기 현가시스템의 승차감 성능 평가 연구 (Ride Performance Evaluation of a Heavy Truck Semi-active Cabin Air Suspension System)

  • 이지선;최규재;이광헌
    • 한국자동차공학회논문집
    • /
    • 제16권5호
    • /
    • pp.77-83
    • /
    • 2008
  • Semi-active cabin air suspension system improves driver's comfort by controlling the damping characteristics in accordance with driving situation. For the driver's comfort evaluation, test procedure has the two methodologies which are filed test and lab test. A field test method has a drawback. It requires a lot of time and money on repetitive test, due to the sensitivity of field test. On the other hand, the test with six axes simulation table at laboratory can obtain the repeatability of test, better than the field test method. In this paper, the procedures of ride performance test and control logic tuning with the table are presented. Drive files of the table can be represented with the almost same input condition as field test data. According to the result from the comparative test using six axes simulation table between passive and semi-active system by making ECU logic tuning, the RMS acceleration of semi-active cabin air suspension system was reduced by 29.6% compared with passive system.