• KSII Transactions on Internet and Information Systems (TIIS)
• /
• 제17권11호
• /
• pp.2945-2965
• /
• 2023

The laser inertial measurement unit is a precision device widely used in rocket navigation system and other equipment, and its quality is directly related to navigation accuracy. In the quality evaluation of laser inertial measurement unit, there is inevitably uncertainty in the index input information. First, the input numerical information is in interval form. Second, the index input grade and the quality evaluation result grade are given according to different national standards. So, it is a key step to transform the interval information input by the index into the data form consistent with the evaluation result grade. In the case of uncertain input, this paper puts forward a method based on probability distribution to solve the problem of asymmetry between the reference grade given by the index and the evaluation result grade when evaluating the quality of laser inertial measurement unit. By mapping the numerical relationship between the designated reference level and the evaluation reference level of the index information under different distributions, the index evidence symmetrical with the evaluation reference level is given. After the uncertain input information is transformed into evidence of interval degree distribution by this method, the information fusion of interval degree distribution evidence is carried out by interval evidential reasoning algorithm, and the evaluation result is obtained by projection covariance matrix adaptive evolution strategy optimization. Taking a five-meter redundant laser inertial measurement unit as an example, the applicability and effectiveness of this method are verified.

• 품질경영학회지
• /
• 제34권1호
• /
• pp.1-12
• /
• 2006

This paper presents a six sigma project for improving gate painting quality in a medium-sized automotive part company. The project follows a disciplined process of five macro phases: Define, Measure, Analyze, Improve, and Control. A CTQ(critical to quality) is determined based on COPQ(cost of poor quality) analysis, and a process map is utilized for identifying process input variables. Three KPIV s(key process input variable) are selected; Painting Temperature, Painting Quantity, and Painting Viscosity, and DOE(design of experiments) is utilized for finding the optimal process conditions for three KPIVs. MINITAB software is used for data analyses and DOE. The sigma level of defects rate has improved from 2.93 to 3.66.

• Journal of Information Technology Applications and Management
• /
• 제16권4호
• /
• pp.185-203
• /
• 2009

The literature reveals that service quality is critical determinants affecting customer satisfaction in the retail industry. Recent online B2C studies also show that service quality significantly influences online customer satisfaction. However, research on analyzing antecedents to determine the service quality level of online shopping has not been sufficiently reported. Moreover, the offline synergy effect on the Internet shopping mall has been presented mostly at a conceptual level. The purpose of this study is to investigate key managerial variables exploiting offline synergy, including pure online attributes, that impact on service quality of the click and mortar Internet shopping mall. A survey was conducted for empirical validation of the hypotheses. The results indicate that core offline synergy factors significantly enhance the perceived service quality level of the Internet shopping mall. Implications, limitations, and future research directions are also discussed.

• The Journal of Asian Finance, Economics and Business
• /
• 제9권5호
• /
• pp.135-145
• /
• 2022

To improve audit quality, certain Chinese auditing firms have added a third-level review by an additional signing auditor to the general evaluation by a signing auditor team consisting of an engagement auditor and a partner. Nonetheless, our research-based on 36,033 firm-year observations from 2004 to 2019 reveals that compared to the general review system, auditor teams under the three-level review system are less likely to issue modified audit opinions when abnormal financial conditions arise. This finding suggests that, while larger auditor teams' knowledge, experience, and information advantages can theoretically sharpen their judgment, their performance is more susceptible to interference from divergent opinions, the diffusion of responsibility, and lower energy invested by individual auditors, ultimately impairing their judgment regarding the audited enterprises' abnormal financial conditions. That is, the three-level review system, which aims to improve audit quality, actually worsens audit quality. This conclusion remains valid after the problems of heteroscedasticity and endogeneity are addressed by using firm-level cluster robust standard errors and two-stage regression. We hope that our research will draw the attention of auditing firms, prompting them to reconsider the rationality of the three-level review system.

• 품질경영학회지
• /
• 제41권3호
• /
• pp.395-404
• /
• 2013

Purpose: Technology readiness assessment(TRA) used as a standard readiness assessment tool in the acquisition program of weapon system has some limitations in the comprehensive understanding of the complex system. Therefore, this research is intended to suggest a holistic maturity assessment method for the acquisition of high quality weapon system. Methods: Technology readiness level(TRL), manufacturing readiness level(MRL), integration readiness level(IRL) and system readiness level(SRL) developed to assess system maturities in the various aspects are compared and analyzed to draw an improvement avenue for the current readiness assessment method. Results: TRL, MRL, IRL and SRL have large differences in their maturity targets during the acquisition life cycle: technological performance, manufacturing capability, interface between components and total system, respectively. They complement one another's shortcomings Conclusion: To achieve a successful acquisition of high quality weapon system, multi-dimensional readiness assessment is required. Therefore, comprehensive readiness assessment using TRL, MRL, IRL and SRL will contribute to the acquisition of high quality weapon system through the accurate maturity information of overall system.

• Journal of the Korean Data and Information Science Society
• /
• 제14권4호
• /
• pp.915-927
• /
• 2003

This paper is the generalization of the modified two-level skip-lot sampling plan(MTSkSP1) to n-level. The general formulas of the operating characteristic(OC) function, average sample number(ASN) and average outgoing quality(AOQ) for the plan are derived using Markov chain properties. The operating characteristic curves, average sample numbers and average outgoing qualities of a reference plan, modified two-level, three-level and five-level skip-lot sampling plans are compared.

• 정보관리학회지
• /
• 제19권3호
• /
• pp.161-188
• /
• 2002

1990년대에 들어서면서 보편화되기 시작한 정보화의 물결은 도서관의 서비스 형태에도 많은 변화를 가져왔다. 그러나 도서관 이용자의 입장에서는 어떤 형태의 서비스가 제공되더라도 기본적으로 이용자가 제공받는 서비스일 뿐, 도서관 이용에 대한 느낌이나 감정 등을 포함하는 서비스의 만족도는 제공받은 서비스의 품질에 의해서 좌우될 수밖에 없다는 특성을 갖는다. 본 연구는 도서관의 서비스 제공이 갖는 이러한 기본적인 특성에 착안하여 이용자들의 관점에서 서비스의 품질 수준을 평가하고, 이에 영향을 미치는 주된 요인들을 파악하여, 향후 더욱 높은 수준의 서비스를 제공할 수 있는 기틀을 마련하고자 하였다. 연구의 모형으로는 서비스 품질을 측정할 때 이용되는 서브퀄(SERVQUAL) 모형을 채택하여, 전문도서관에서 이용자들이 느끼는 서비스 품질에 대한 기대와 지각을 측정하였다.

• 정보기술과데이타베이스저널
• /
• 제3권2호
• /
• pp.97-118
• /
• 1996

Information systems quality engineering is one of the most problematic areas in practice and research, and needs cooperative efforts between practice and theory [Glass, 1996]. A model for evaluating the quality of system development process and ensuing success is proposed based on information processing theory of project unit design. A nomological net among a set of quality variables is identified from prior research in the areas of organization science, software engineering, and management information systems. More specifically, system development success was modelled as a function of project complexity, system development modelling environment, user participation, project unit structure, resource availability, and the level of iterative nature of development methodology. Based on the model developed from the information processing theory of project unit design in organization science. appropriate quality metrics for each variable in the proposed model are matched. In this way, a framework of relevant systems development and success quality metrics for controlling systems development processes and ensuing success is proposed. The causal relationships among the constructs in the proposed model are proposed as future empirical research for academicians and as managerial tools for quality managers. The framework and propositions help quality manager to select more parsimonious quality metrics for controlling information systems development processes and project success in an integrated way. Also this model can be utilized for evaluating software quality assurance programmes, which are developed and marketed by many vendors.

• 한국컴퓨터정보학회논문지
• /
• 제23권11호
• /
• pp.137-142
• /
• 2018

The purpose of this study is to contribute to the improvement of indoor air quality management in dental clinic by investigating the level of indoor air quality recognition among dental clinic workers. The questionnaire survey was conducted for about 4 weeks from May 20 to June 20, 2018 in dental clinics located in Jeollanamdo area and 143 were used as the analysis data. The method of indoor air quality management in dental clinic was preferred to "natural ventilation" method and the number of natural ventilation was 1 to 2 times per day and the results of survey on indoor environment satisfaction showed that satisfaction level was lowest in noise and smell items. The types of subjective symptoms experienced by workers working at dental clinics are "cough", "eye burn", and "headache" and a survey on the degree of the relationship between subjective symptoms and indoor air quality showed that 94.4% (135) of respondents answered "very relevant" and "slightly related". As a result of multiple regression analysis, the variables affecting the indoor air quality satisfaction of the dental clinic staff were analyzed as the items such as lighting, noise, main work, number of patients, comparing indoor and outdoor air quality and among them, "comparing indoor and outdoor air quality" was analyzed as having a great influence. To improve the indoor air quality satisfaction of dental clinic worker adequate ventilation, designate the person responsible for the indoor air quality management and periodic measurement efforts will be necessary.

• 산학경영연구
• /
• 제19권1호
• /
• pp.175-191
• /
• 2006

이 연구의 의도는 호텔정보시스템활용이 서비스품질에 미치는 효과를 규명하는 것으로 호텔의 정보 시스템활용의 중요성을 우리나라의 서울시와 중국의 상해시 일본의 동경 그리고 대만의 타이페이시에 소재한 특급호텔을 중심으로 실증조사를 통하여 접근하였다. 2003년 2월부터 8월까지 4개국에서 체집된 유효표본 574부가 분석에 이용되었으며 요인분석과 회귀분석으로 접근하였다. 연구결과에 따르면, 호텔경영정보시스템활용수준은 서비스품질과 상호간 밀접한 관련이 존재하는 것으로 밝혀졌으며, 호텔서비스품질의 효율성 제고를 위해서는 호텔경영정보시스템과 관련된 프론트부서운영시스템 지원부서운영시스템 영업장운영시스템 및 인터페이스운영시스템의 상호균형이 매우 중요한 요소가 된다는 사실을 확인할 수 있었다.