• Title, Summary, Keyword: Model test

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A Study on Comparison of Excellence Among of P-Model, E-Model, and GAP-Model

  • Cho, Yoon-Shik;Doh, Min-Sun
    • Journal of the Korean Data and Information Science Society
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    • v.19 no.3
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    • pp.893-901
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    • 2008
  • The disconfirmation paradigm is the earliest researched and the most deeply researched of all the paradigms in marketing. Disconfirmation paradigm deals with the influence of expectation, perceived product performance, and the discord between the two on consumer satisfaction. The GAP-Model is based on the disconfirmation paradigm that tries to understand the effect of the gap between before purchase expectations and after purchase perceptions of the product performance on dependent variables such as customer satisfaction. The purpose of this research is to test whether regression coefficients of a P-Model(performance only model), an E-Model(expectation only model) and GAP(P-E)-Model are equivalent in explaining service value and loyalty. The Chow's F-Test is used to test the excellence of the 3 models. As a result of comparison and analysis, P-Model showed more excellence of service value and loyalty than E-Model or GAP-Model.

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Validation of vehicle dynamic no del by using the optimization tool (최적화 툴을 이용한 동특성 해석 모델 검증)

  • Park, Kil-Bae;Seung, Jae-Ho;Woo, Kwan-Je
    • Proceedings of the KSR Conference
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    • pp.1557-1565
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    • 2009
  • According to the GM/RT2141, to assess the safety of vehicle, the validated the vehicle dynamic model should be applied. The validation of the vehicle model is against the static test, some kind of vehicle type test results have been used to determine the suspension characteristics and the vehicle dynamic characteristics. To validate the vehicle model and the test results, first the test results has been analysed as to specified the suspension characteristics and than the parameters to related with the test result has to be adjusted to show the same results of the test. In this process the parameters of vehicle model have been determined to show the coherence of the two results of the simulation and the test by trial & error. In this report, the optimization tool has been introduced in this model validation process and shows the efficient and well validated model.

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Comparision Analysis of Model Test for Prediction of Uplift Resistance in the Reclaimed Land Greenhouse Foundation (간척지 온실기초 나무말뚝의 인발저항력 예측을 위한 실내모형시험 결과 비교·분석)

  • Song, Chang Seob;Kim, Myeong Hwan;Jang, Ung Hee
    • Journal of The Korean Society of Agricultural Engineers
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    • v.58 no.2
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    • pp.45-52
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    • 2016
  • The object of this paper was to evaulate modified proposed design equation in model test result in order to estimate uplift-resistance of timber pile of reclaimed land greenhouse foundation. Uplift resistance result of model test was increased to according to increased of contact area. Uplift-resistance result of field test tend to lineary increased to according to increased of embedment depth and contact area. Results of field uplift-resistance was evaluate compare with modified proposed design equation results of model test and Effective stress method. As the Effective stress method tend to underestimate, modified proposed design equation results of model test tend to similar type. As the contact area increase, difference between field uplift-resistance results and modified proposed design equation results of model test was considered uplift-speed.

A Study on the Techniques for Sailing Yacht Model Tests with Sailing Condition (항주자세를 고러한 세일링 요트의 선형기법 시험연구)

  • Sim, Sang-Mog;Kim, Dong-Joon;Kang, Byung-Yoon
    • Journal of the Society of Naval Architects of Korea
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    • v.43 no.1
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    • pp.32-42
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    • 2006
  • This study aims at establishing a technique for sailing yachts model tests with sailing condition. It is very important to estimate a ship's potential speed performance before building a real ship. Several methods are used to estimate a ship's potential speed performance such as using parent ship data, standard vessel chart and model test. Model test is the most precise among these options. In korea. model testing is widely used with general vessels but not with sailing yachts. Because sailing yachts are propelled with heeling and leeway. using the wind. another method is needed to estimate their speed. The new model test. which is different from tests for upright general vessels, is in a great demand. In this paper. we describe a test method for the sailing yacht model test. based on Masuyama's equation of motion. And we describe choosing scale ratio. production process and materials of the model. Also. various ways of measuring instruments. attaching jigs and adjusting calibration are described so that they can be utilized as useful data for model testing.

Validation of Driver Steering Model with Vehicle Test (실차 실험을 통한 운전자 조향 모델의 검증)

  • Chung Taeyoung;Lee Gunbok;Yi Kyongsu
    • Transactions of the Korean Society of Automotive Engineers
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    • v.13 no.1
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    • pp.76-82
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    • 2005
  • In this paper, validation of Driver Steering Model has been conducted. The comparison between the simulation model and vehicle test results shows that the model is very feasible for describing combined human driver and actual vehicle dynamic behaviors. The 3D vehicle model is consisted of 6-DOF sprung mass and 4-quarter car model for vehicle body dynamics. Powertrain model including differential gear and Pacejka tire model are applied. The driver steering model is also validated with vehicle test result. The driver steering model is based on angle and displacement error from the desired path, recognized by driver.

A blueprint for designing and developing the listening and the reading test of National English Ability Test (NEAT): Item-types decision-making model (국가영어능력평가시험(NEAT)의 검사지 구성의 원칙과 절차: 문항 유형 확정 모델)

  • Kim, Yong-Myeong
    • English Language & Literature Teaching
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    • v.16 no.4
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    • pp.153-184
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    • 2010
  • On the bases of the 5 principles and the 4 criteria for designing and developing of the listening and the reading test of National English Ability Test (NEAT), this study presents Item-Types Decision-Making Model as a blueprint for designing and constructing the two tests. It sets up the criteria for validating item types, designs a modular type of test specifications, constructs an item-types bank, and specifies a complementary type of test specifications of the two tests. To gather all these threads up, it constructs Item-Types Decision-Making Model which consists of such components as the item-type pool, the validity criteria and the procedures of testing item types, the item-types bank, the modular and the complementary type test specification. Thus, it shows how the Model works in developing and constructing the two level-differentiated listening and reading tests (the 2nd and the 3rd rank) of NEAT. Finally, it discusses some implications and applications of the Model to the two level-differentiated tests (the A and the B type) of 2014 CSAT (College Scholastic Ability Test) systems, National Assessment of Educational Achievement (NAEA), and classroom testing. In conclusion, Item-Types Decision-Making Model functions as a testing template in an item development system and as a matrix in an item-types bank system.

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The high altitude test method of Scramjet engine combustor model (스크램제트 연소기 모델의 고공시험 연구)

  • Woo Kwan Je;Kim Young Soo;Skivin V. A
    • Proceedings of the KSME Conference
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    • pp.271-274
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    • 2002
  • This paper is investigated construction of the Scramjet test facility and test method of Scramjet engine combustor model. Scramiet engine combustor model test was performed at Lab C-16BK CIAM (Central Institute of Aviation Motors) at Tyraevo in Moscow. The velocity of flow in the combustion chamber equal to Mach number 2.49 with single hole fuel spray nozzle injector and test duration equal to 7 seconds. Therefore In this paper is showed high altitude test method of Scramjet combustor model and the proper structure of combustor with single hole fuel spray nozzle.

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A study of evaluation reliability growth for Korea-Automated Guideway Transit system (한국형경량전철시스템(K-AGT) 신뢰성 성장 평가에 관한 연구)

  • Han Seok-Youn;Lee Ahn-Ho;Ha Chen-Soo;Lee Ho-Yong
    • Journal of the Korean Society for Railway
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    • v.8 no.6
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    • pp.597-601
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    • 2005
  • Korea Railroad Research Institute(KRRI) developed the Driverless Rubber Tired Korea-AGT(Model: K-AGT) from 1999 to 2004. We have finished the safety and performance tests of K-AGT. Data obtained from this testing can be used to evaluate the growth of reliability. The most widely used traditional growth tracking model is included as IEC International standard. With the tracking model all corrective actions are incorporated during test, called test-fix-test. In the test-fix-test strategy problem modes are found during testing and corrective actions for these problems are incorporated during testing. In this paper, we demonstrated reliability analysis using growth model of driverless rubber tired K-AGT system to prove reliability of development system. Therefore, we introduce the well-known NHPP model and analyze a reliability growth using ReliaSoft's RGA software.

Captive Model Test of Submerged Body Using CPMC (몰수체의 CPMC 구속모형시험)

  • Kim, Yeon-Gyu;Yun, Kun-Hang;Kim, Sun-Young;Kim, Dong-Jin
    • Journal of the Society of Naval Architects of Korea
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    • v.49 no.4
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    • pp.296-303
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    • 2012
  • The captive model test of submerged body using CPMC(Computerized Planar Motion Carriage) was carried out at the Ocean Basin of KORDI/MOERI. The target model is a submarine with general hullform. The forces and moments acting on the submerged body were measured by 6-axis waterproof gage. The oblique motion test and turning test were carried out in horizontal and vertical planes of the model. Maneuvering coefficients and derivatives were obtained from the test results. The stability indices in horizontal and vertical planes were obtained by using maneuvering derivatives. In this paper the introduction of test equipment and test results are presented.

Bootstrap Method for Row and Column Effects Model

  • Jeong, Hyeong-Chul
    • Communications for Statistical Applications and Methods
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    • v.12 no.2
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    • pp.521-529
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    • 2005
  • In this paper, we consider a bootstrap method to the 'row and column effects model' (RC model) to analyze a contingency table with ordered variables. We propose a bootstrap procedure for testing of independence, equality of intervals, and goodness of fit in the RC model. A real data example is included.