• Title/Summary/Keyword: reliability factors

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Examining Success Factors of Online P2P Lending Service Using Kano Model and Fuzzy-AHP (Kano 모형과 Fuzzy-AHP를 이용한 온라인 P2P 금융 서비스 성공요인 도출)

  • An, Kyung Min;Lee, Young-Chan
    • Knowledge Management Research
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    • v.19 no.2
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    • pp.109-132
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    • 2018
  • Recently, new financial services related to FinTech has gained attention more and more. Online P2P financial services transactions such as FinTech require careful examination of the constituents of information systems as an investment is made based on the information presented on the online platform without direct face-to-face contact. The purpose of this study is to find out the success factors of online P2P Lending service among FinTech. To serve the purpose, we build IS (information system) success model, and then use Kano model and fuzzy analytic hierarchy process (Fuzzy-AHP) to find out factors for the success of online P2P Lending service. In particular, this study uses Kano model to classify information system satisfaction factors and to calculate the satisfaction coefficient. The Kano model, however, has a drawback of evaluating single criterion. Therefore, we use multi-criteria decision-making technique such as Fuzzy-AHP to derive the relative importance of the factors. The analysis results show different results depending on the analysis technique. In the Kano model, most of the information system factors are a one-dimensional quality attribute. The satisfaction coefficient is highest for personalized service, followed by the responsiveness of service, ease of using a system, understanding of information, usefulness of information' reliability. The service reliability is the highest in dissatisfaction coefficient, followed by system security, service responsiveness, system stability, and personalized service. The results of the Fuzzy-AHP analysis shows that the usefulness of information quality, the personalization of service quality, and the security of system quality are the significant factors and the stability of system quality was a secondary factor.

An Empirical Study on Web Site User-Interface Evaluation For Service Information Management (서비스정보관리자를 위한 웹사이트 인터페이스 평가요인에 관한 연구)

  • 김명옥
    • The Journal of Society for e-Business Studies
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    • v.7 no.1
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    • pp.19-34
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    • 2002
  • The main objective of this research is to find out whether there exist any user interface factors that influence service information management professionals(SIMP)'s business activities on the web. The result of this study shows that there exists a significant level of difference between two groups of office Professionals: SIMP and general office management professionals on user interface factors. We analyzed the past and current research results and focused on four major evaluation categories: (1) web design, (2) structure, (3) navigation, and (4) interaction and identified 26 evaluation items in those categories. The study has been initiated by an intuition that there might be a significant difference in sets of user interface factors that influence SIMP and general office professionals. From the list of Best 100 Web Sites the best 30 information-providing web sites and the best 30 service-providing web sites were carefully chosen by a panel of 10 members for each group. To evaluate 60 web sites, another panel was formed by 30 professionals from each group, and they conducted evaluation in their own work settings. Reliability analysis on user interface factors and T-test to find out any influencing factors on SIMP were performed. As a result of this study, we have recognized that clarity, formation, consciseness, economics, and robustness are the most influencing user interface factors for web designers to concern when they develop web sites for SIMP. The study result can be improved by enhancing reliability of choosing target web sites In investigate and panel members. Also, in the future study it is recommended to investigate influencing factors for office professionals in terms of. age, sex, experience, academic background, etc.

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A Comparison on the Factors Influencing Customer Values in Electronic Commerce between Korea and China (전자상거래 고객가치 요인의 한·중 비교)

  • Lee, Hyun-Kyu;Han, Jae-Ho
    • The Journal of Information Systems
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    • v.21 no.4
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    • pp.155-183
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    • 2012
  • Means-Ends Network model was used to identify factors of means objective(means supplied by vendor) and fundamental objectives(purchasing motivations) for purchasing decision-making structure and dimensions of customer values on purchasers of internet shopping mall in Korea and China. In Means-Ends Network 6 factors(shopping travel, shipping assurance, vendor trust, online payment, product choice, and recommender systems) were found as a means objectives and 3 factors(shopping convenience, internet environment, customer support) as a fundamental objectives of shopping. However the results of hypotheses test for Means-Ends Network show some important differences between two countries. Something important to notice here is that Chinese customers shopping in China recognize shipping assurance factor and vendor trust factor as important factors satisfying all fundamental objectives unlike as in the case of our country. As these two factors are attribution factors responsible to the sellers, it is identified that customers do not trust the sellers and sellers have not met the expectations of customers. Therefore, these results show that the seller efforts assuring the reliability of the seller themselves, such as conducting its own compensation scheme are more important rather than the establishment of the guarantee institution to guarantee reliability and delivery assurance of sellers and implementation of legal and institutional apparatus such as the settlement of e-commerce licence system. Though this study presents such an important marketing implications, it can be pointed out that the limits are this research was done on the general Internet shopping malls without considering the Internet shopping mall types of diversity, the survey was designed around the student samples for convenience of the investigation because it was an international survey and the collected data has been limited to the western coast cities, such as China's Beijing, Shanghai, and Dalian.

Structural reliability index versus behavior factor in RC frames with equal lateral resistance

  • Mohammadi, R.;Massumi, A.;Meshkat-Dini, A.
    • Earthquakes and Structures
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    • v.8 no.5
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    • pp.995-1016
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    • 2015
  • The reliability or the safety index is a measure of how far a structure is from the state of collapse. Also it defined as the probability that a structure will not fail in its lifetime. Having any increase in the reliability index is typically interpreted as increasing in the safety of structures. On the other hand most of researchers acknowledged that one of the most effective means of increasing both the reliability and the safety of structures is to increase the structural redundancy. They also acknowledged that increasing the number of vertical seismic framing will make structural system more reliable and safer against stochastic events such as earthquakes. In this paper the reliability index and the behavior factor of a numbers of three dimensional RC moment resisting frames with the same story area, equal lateral resistant as well as different redundancy has been evaluated numerically using both deterministic and probabilistic approaches. Study on the reliability index and the behavior factor in the case study models of this research illustrated that the changes of these two factors do not have always the same manner due to the increasing of the structural redundancy. In some cases, structures with larger reliability index have smaller behavior factor. Also assuming the same ultimate lateral resistance of structures which causes an increase to a certain level of redundancy can enhance behavior factor of structures. However any further increase in the redundancy of that certain level might decrease the behavior factor. Furthermore, the results of this study illustrate that concerning any increase in the structural redundancy will make the reliability index of structure to be larger.

Application of Load and Resistance Factor Design Format to Designing Flexible Pavements (LRFD 기법을 활용한 연성포장 설계방안에 관한 연구)

  • Kim, Hyung-Bae
    • International Journal of Highway Engineering
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    • v.5 no.1 s.15
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    • pp.1-10
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    • 2003
  • The objective of pavement design, just as with the design of other structures, is to obtain the most economical designs at specified levels of reliability. Methods that yield designs with different levels of reliability are undesirable, and over the course of time design approaches in the U.S. and Europe have converged toward the Load and Resistance Factor Design (LRFD) format in order to assure uniform reliability. At present the LRFD format has been implemented in concrete, steel, wood and bridge design specifications. In this paper, reliability theories are used to illustrate the development of an LRFD format for Mechanistic-Empirical (M-E) design of flexible pavements as an alternative of its reliability module. It is shown in this paper that ten candidate pavement sections designed with a reliability level using the AASHTO design guide (1986) do not have uniform structural reliability in terms of pavement mechanistic distress such as fatigue cracking and the uniform reliability can be achieved by using the LRFD format.

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System Reliability Analysis Considering Correlation of Performances (성능의 상관관계를 고려한 시스템 신뢰성 해석)

  • Kim, Saekyeol;Lim, Woochul;Lee, Tae Hee
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.41 no.4
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    • pp.291-297
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    • 2017
  • Reliability analysis of a mechanical system has been developed in order to consider the uncertainties in the product design that may occur from the tolerance of design variables, uncertainties of noise, environmental factors, and material properties. In most of the previous studies, the reliability was calculated independently for each performance of the system. However, the conventional methods cannot consider the correlation between the performances of the system that may lead to a difference between the reliability of the entire system and the reliability of the individual performance. In this paper, the joint probability density function (PDF) of the performances is modeled using a copula which takes into account the correlation between performances of the system. The system reliability is proposed as the integral of joint PDF of performances and is compared with the individual reliability of each performance by mathematical examples and two-bar truss example.

Reliability Analysis with Space Radiation of Low-Cost COTS Small Satellite (우주방사능 효과를 고려한 저가 COTS 소형위성의 신뢰성 분석)

  • Jeong, Ji-Wan;Jang, Yeong-Geun;Mun, Byeong-Yeong
    • Journal of the Korean Society for Aeronautical & Space Sciences
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    • v.34 no.2
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    • pp.56-67
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    • 2006
  • The reliability and failure mode effect analysis are effective means to achieve efficient and cost-reduction design for satellite development. The failure rate of COTS (Commercial-Off-The-Shelf) parts required for reliability analysis is not usually provided from the manufacturer. Space environment factors based on empirical data obtained from MIL-HDBK-217F can be applicable to the reliability calculation. As a radiation environment factor, the occurrence rate of SEL (Single Event Latch-up) is additionally incorporated for the failure rate prediction. In this paper, the statistical reliability analysis method for low-cost small satellite using COTS parts is suggested. This statistical reliability analysis was applied to HAUSAT-2 small satellite whose electronic boxes are consisted of many COTS parts to calculate the system reliability at the end of design mission life.

A Study of Family Adaptability and Cohesion Evaluation Scale(FACES) (가족의 응집 및 적응 평가 척도에 관한연구)

  • 김수연
    • Journal of the Korean Home Economics Association
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    • v.35 no.1
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    • pp.59-74
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    • 1997
  • FACES II & III do not capture the high extremes of the dimension and are linear rather than curvilinear measure. FACES IV is the latest revision of FACES series and can capture two extreme dimension of Circumplex Model. The purpose of this study is to examine reliability and validity of reconstructed FACES using by FACES II, III, IV. Factor analysis showed that Cohesion and Adaptability consisted 3 factors (disengaged, connected, emmeshed/rigid, flexble, chaotic) Extremes on each dimension conceptually were opposite and they were uncorrelated with each other. FACES effectively predicted family function. Reliability coefficients of subscales ranged from 61~85 Reconstructed FACES had good internal consistency and construct and criterion related validity.

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A Study of Family Adaptability and Cohesion Evaluation Scale II (가족의 응집 및 적응 척도에 관한 연구 II)

  • 김수연
    • Journal of the Korean Home Economics Association
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    • v.35 no.6
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    • pp.205-219
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    • 1997
  • FACES II & III did not capture high extremes of Cohesion and Adaptability dimension, and were linear rather than curvilinear measure. The purpose of this study was to examine reliability and validity of revised FACES using by FACES II,III,IV. Factor analysis showed that Cohesion and Adaptability dimension consisted each 3 factors(disengaged, connected, enmeshed / rigid, flexible, chaotic). Extremes on each dimension conceptually were opposite and they were uncorrelated with each other. Revised FACES effectively predicted family function. Reliability coefficients of subscales ranged form .68~.82. Revised FACES had good internal consistency, and construct and criterion related validity.

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Accelerated Life Test Design for Vacuum Cleaner Motors (청소기모터의 가속수명시험설계)

  • Lee, Kie-Hwa;Yun, Won-Young
    • Journal of Applied Reliability
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    • v.9 no.1
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    • pp.47-58
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    • 2009
  • In this paper, an accelerated life test procedure for a vacuum cleaner motor is proposed. We investigate the failure mechanism of the motor and select some accelerating factors and determine the orifice size as a key accelerating factor. Three stress levels of orifice size are tested and the failure data with censored data are analyzed. The modified accelerating test will reduce the test time in design phase by using the accelerating factor.

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