scholarly journals Quality Evaluation of Wind Turbine Roller Bearing Profile in the Ultra-long Flexible Blade

2021 ◽  
Vol 251 ◽  
pp. 03082
Author(s):  
Mingshu Li ◽  
Yuhong Sun ◽  
Ling Wang ◽  
Zhiteng Gao
Keyword(s):  
Wind Turbine ◽  
Quality Evaluation ◽  
Evaluation Model ◽  
Roller Bearing ◽  
Least Square Method ◽  
Absolute Error ◽  
Least Square ◽  
Roller Profile ◽  
Quality Evaluation Model

In order to accurately measure and evaluate the quality of the roller profile of the ultra-long flexible blade bearing, an error evaluation model is established for the arc segment and the straight segment of the roller based on the least square method, and then an overall quality evaluation model is proposed based on these two error models. Through the simulation of a standard wind turbine cylindrical roller bearing, it is found that the quality evaluation model established in this work can effectively measure and evaluate the contour line of the wind turbine bearing’s roller. The overall absolute error is 0.0319 mm, which is consistent with the set random error. The overall quality evaluation model is also valid for other types of bearings commonly used in the wind turbine, which include arc and straight segments, and can be used to evaluate the error quality of the roller profile of wind turbine bearings.

scholarly journals No-Reference Depth Map Quality Evaluation Model Based on Depth Map Edge Confidence Measurement in Immersive Video Applications

2019 ◽  
Vol 11 (10) ◽  
pp. 204 ◽  
Author(s):  
Dogan ◽  
Haddad ◽  
Ekmekcioglu ◽  
Kondoz
Keyword(s):  
Quality Evaluation ◽  
Evaluation Model ◽  
Depth Map ◽  
Depth Image ◽  
Depth Maps ◽  
Model Based ◽  
Objective Quality ◽  
Quality Evaluation Model ◽  
Confidence Measurement

When it comes to evaluating perceptual quality of digital media for overall quality of experience assessment in immersive video applications, typically two main approaches stand out: Subjective and objective quality evaluation. On one hand, subjective quality evaluation offers the best representation of perceived video quality assessed by the real viewers. On the other hand, it consumes a significant amount of time and effort, due to the involvement of real users with lengthy and laborious assessment procedures. Thus, it is essential that an objective quality evaluation model is developed. The speed-up advantage offered by an objective quality evaluation model, which can predict the quality of rendered virtual views based on the depth maps used in the rendering process, allows for faster quality assessments for immersive video applications. This is particularly important given the lack of a suitable reference or ground truth for comparing the available depth maps, especially when live content services are offered in those applications. This paper presents a no-reference depth map quality evaluation model based on a proposed depth map edge confidence measurement technique to assist with accurately estimating the quality of rendered (virtual) views in immersive multi-view video content. The model is applied for depth image-based rendering in multi-view video format, providing comparable evaluation results to those existing in the literature, and often exceeding their performance.

Quality Evaluation Model for Highway General Mechanical and Electrical Product

2013 ◽  
Vol 706-708 ◽  
pp. 2095-2098
Author(s):  
Cheng Zan Chu ◽  
Li Wei Zhu ◽  
Ran Na
Keyword(s):  
Product Quality ◽  
Quality Evaluation ◽  
Evaluation Method ◽  
Evaluation Model ◽  
Rapid Development ◽  
Mechanical Equipment ◽  
The Past ◽  
Generic Quality ◽  
Quality Evaluation Model

Highway general mechanical and electrical product quality is one of the important factors for guaranteeing highway efficient and safe operation. Over the past decade, with the rapid development of highway construction and mechanical equipment manufacturing technology, more and more mechanical and electrical products applied in highway. For the objective and scientific evaluation of quality of mechanical and electrical products, highway mechanical and electrical product quality index system and quality evaluation model were researched based on product generic quality evaluation method, and then verified by actual product case.

scholarly journals Research on express service based on improving customer satisfaction

2020 ◽  
Vol 325 ◽  
pp. 03003
Author(s):  
Jiangxue Di ◽  
Haolan Liang
Keyword(s):  
Customer Satisfaction ◽  
Service Quality ◽  
Quality Evaluation ◽  
Evaluation Model ◽  
Rapid Development ◽  
Richter Scale ◽  
Service Quality Evaluation ◽  
Quality Evaluation Model ◽  
Express Delivery

With the rapid development of e-commerce in China, the scale of express delivery industry is also expanding rapidly, while the quality of express delivery service has not been effectively improved, with a high value of number lying in the complaint rate of express delivery industry, which leads to low customer satisfaction. Based on the service quality evaluation model, this paper designs the questionnaire with the help of the Richter scale, also constructs the evaluation index of express service quality based on customer satisfaction, with the analysis of the factors through the use of SPSS 23, this essay finds out the main factors that affect the customer’s satisfaction with express service quality,and put forwards corresponding suggestion for improvement.

scholarly journals A model of madrasa ibtidaiya quality evaluation

2017 ◽  
Vol 3 (1) ◽  
pp. 28
Author(s):  
Dwi Istiyani ◽  
Zamroni Zamroni ◽  
Suharsimi Arikunto
Keyword(s):  
Quality Evaluation ◽  
Evaluation Model ◽  
Short Term ◽  
Term Outcome ◽  
Product Selection ◽  
Long Term Outcome ◽  
Result Analysis ◽  
Quality Evaluation Model

The study was to develop a madrasa ibtidaiya quality evaluation model (MIQEM) for measuring the quality of madrasa ibtidaiya (MI), including the input, the process, the short-term outcome, and the long-term outcome. The method implemented in this research was research and development (R & D). The subjects of the study were the principals and teachers of state madrasa ibtidaiya. The study concluded that: (1) the a MIQEM was developed through the product selection, review and result analysis, and model draft; (2) the implementation of the developed MIQEM was done by the principals and the teachers by operating the MIQEM instrument; (3) the results of the developed MIQEM implementation showed that it could improve madrasa ibtidaiya quality; (4) the results of the model fitness test indicated that the model was fit into the data.

scholarly journals Virtualiosios mokymosi aplinkos techninės kokybės tobulinimas

2010 ◽  
Vol 54 ◽  
pp. 63-72
Author(s):  
Eugenijus Kurilovas ◽  
Irina Vinogradova
Keyword(s):  
Quality Improvement ◽  
University Students ◽  
Learning Process ◽  
Quality Evaluation ◽  
Evaluation Model ◽  
Virtual Learning ◽  
Virtual Learning Environment ◽  
Technical Quality ◽  
Quality Evaluation Model

Šio darbo tikslas – išanalizuoti, kurios virtualiosios mokymosi aplinkos (VMA) priemonės yra svarbiausios mokymosi procese ir, atsižvelgiant į visapusišką VMA techninės kokybės modelį, pasiūlyti VMA tobulinimo kryptis. Šiam tikslui buvo organizuota Lietuvos universitetų studentų apklausa. Tyrimo rezultatai rodo, kad, studentų nuomone, mokymosi procese VMA personalizavimo kokybės kriterijai yra svarbesni už VMA adaptavimo kriterijus. Straipsnyje analizuojamos kelios VMA adaptyvumo ir apskritai adaptavimo kokybės tobulinimo kryptys.Improvement of Technical Quality of Virtual Learning EnvironmentsEugenijus Kurilovas, Irina Vinogradova SummaryThe paper is aimed to analyze which Virtual Learning Environment (VLE) tools are most useful for students in the learning process, and to propose the trends for VLE quality improvement considering the existing comprehensive VLE technical quality evaluation model. Lithuanian university students survey was organised for this purpose. The results show that the VLE personalization quality evaluation criterion is most useful for students in the learning process, while the adaptivity criterion was ranked lower. Several trends are proposed to improve VLE adaptivity and overall adaptation quality.

scholarly journals RESEARCH ON EVALUATION METHOD OF REAL ESTATE REGISTRATION DATA QUALITY

2021 ◽  
Vol XLIII-B3-2021 ◽  
pp. 749-754
Author(s):  
C. X. Chen ◽  
H. Zhang ◽  
K. Jiang ◽  
H. T. Zhao ◽  
W. Xie ◽  
...  
Keyword(s):  
Quality Control ◽  
Real Estate ◽  
Data Quality ◽  
Quality Evaluation ◽  
Evaluation Method ◽  
Evaluation Model ◽  
Data Quality Control ◽  
Registration Data ◽  
Quality Evaluation Model

Abstract. In recent years, China has promulgated the "Civil Code of the People's Republic of China", "Implementation Rules of the Provisional Regulations on Real Estate Registration" and other laws and regulations, which have protected citizens' rights and obligations in real estate from the legal system. It shows that the quality of real estate registration data is very important. At present, there is no set of standards for evaluating the quality of real estate registration data. This article sorts out the production process of real estate registration data and focuses on the four stages of production: digitization results, field surveys and surveying and mapping results, group building results, integration and association. As a result, the main points of real estate registration data quality control were put forward, and a quality evaluation model was developed. Taking Beijing's real estate registration historical archives integrated data quality inspection as an application case, it shows that the quality evaluation model has been successfully applied to actual projects, ensuring the quality of Beijing real estate registration data. It also provides a reference for the next step in China's quality control of the unified registration of natural resources confirmation.

scholarly journals A HYBRID BANKING WEBSITES QUALITY EVALUATION MODEL USING AHP AND COPRAS-G: A TURKEY CASE

2014 ◽  
Vol 20 (4) ◽  
pp. 757-782 ◽  
Author(s):  
Fatih Ecer
Keyword(s):  
Quality Evaluation ◽  
Systematic Approach ◽  
Evaluation Model ◽  
Evaluation Criteria ◽  
Full Potential ◽  
Effective Evaluation ◽  
Overall Performance ◽  
Quality Evaluation Model

The quality of websites can directly influence bank's effectiveness. Therefore, the effective evaluation of the quality of bank websites is a point of concern for customers, owners, and researchers. The primary goal of the study is to propose a hybrid model of AHP and COPRAS-G methods for evaluating the website quality of banks. Furthermore, this study sheds light on understanding weights of evaluation criteria related to quality of bank websites. In this study, the weights of the evaluation criteria are computed by AHP method. Next, COPRAS-G is used to assess the quality levels of the websites and to rank them. A case study of evaluating the quality of bank websites of seventeen banks in Turkey is used to demonstrate the applicability and the effectiveness of this model. Empirical findings show that banks in Turkey utilize the Internet to its full potential to improve their websites. Furthermore, Garanti Bankasi has the best overall performance, followed by TEB, and Ziraat Bankasi. Additionally, the top-five evaluation criteria in order of importance are relevance, richness, understandability, navigability, and response time. Overall, the results show that this model provides a comprehensive and systematic approach that quantitatively measures a website's quality.

scholarly journals A Teaching Quality Evaluation Model Based on a Wavelet Neural Network Improved by Particle Swarm Optimization

2014 ◽  
Vol 14 (3) ◽  
pp. 110-120 ◽  
Author(s):  
Hui Li
Keyword(s):  
Higher Education ◽  
Index System ◽  
Quality Evaluation ◽  
Evaluation Model ◽  
Teaching Quality ◽  
Evaluation Index System ◽  
Evaluation Index ◽  
Quality Of Higher Education ◽  
Quality Evaluation Model

Abstract In order to improve the teaching quality of higher education, the paper constructed a teaching quality evaluation index system with five first level indicators and twenty two second level indicators according to the teaching level evaluation index system of ordinary higher education. For the complex nonlinear relationships between the evaluation indices, a mathematical model for evaluating the teaching quality based on WNN, whose parameters were optimized by PSO, was presented in the paper. The experimental results showed that the method proposed could better improve the accuracy of the teaching quality evaluation target by making the mean square error of the actual output value and the desired output value smaller. Simultaneously, the method has been widely used in teaching quality evaluation of our college.

scholarly journals Algorithm of Classroom Teaching Quality Evaluation Based on Markov Chain

Complexity ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Tongqing Yuan
Keyword(s):  
Mathematical Model ◽  
Markov Chain ◽  
Quality Evaluation ◽  
Evaluation Model ◽  
Teaching Quality ◽  
Classroom Teaching ◽  
Teaching Process ◽  
Hybrid Teaching ◽  
Quality Evaluation Model

The Markov chain model teaching evaluation method is a quantitative analysis method based on probability theory and stochastic process theory, which establishes a stochastic mathematical model to analyse the quantitative relationship in the change and development process of real activities. Applying it to achieve a more comprehensive, reasonable, and effective evaluation of the classroom teaching quality of college teachers is of positive significance for promoting the continuous improvement of the teaching level of teachers and the teaching quality of schools. Therefore, after an in-depth study of Markov chain algorithm theory, this research proposes an improved Markov chain hybrid teaching quality evaluation model and designs comparative experiments and applies it to the hybrid teaching quality evaluation system of universities, designs a corresponding hybrid teaching quality evaluation model, and finally verifies its effectiveness through experiments. The mathematical model of mixed classroom teaching quality evaluation given in this research focuses on the development and change of the teaching process. For the teaching process that is closely related to the causality of teaching quality, the model established in this paper is more objective and reasonable for evaluating the quality of teaching.

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