scholarly journals A structural quality evaluation model for three-dimensional simulations

Open Physics ◽  
2019 ◽  
Vol 17 (1) ◽  
pp. 329-333
Author(s):  
Michał Kowalczyk ◽  
Piotr Napieralski
Keyword(s):  
Feature Detection ◽  
Quality Evaluation ◽  
Evaluation Model ◽  
Three Dimensional ◽  
Cost Effective ◽  
Image Feature ◽  
Structural Quality ◽  
Versatile Tool ◽  
Three Dimensional Simulations

Abstract Purpose In recent years, computer simulations have become an innovative approach which enables research in the field of highly complicated physical phenomena and the study of the laws which govern the universe. The proper interpretation of the results of a visual simulation requires the highest quality of the generated image, as every distortion or mistake may have a significant influence on the readability, accuracy and even credibility of the presentation of the results. The aim of this presentation is to determine a model that enables precise quality evaluation of the three-dimensional visual simulations in the field of structural correctness. Design/methodology/approach The developed model is a solution that makes it possible to estimate the quality of stereoscopic image in the context of major three-dimensional structural dysfunctions, namely, vertical parallax, rotation mismatch and scale mismatch. Implementing the wrought theoretical model with the use of cost-effective mechanisms of image feature detection creates a robust method which enables the scalar grade of structural correctness of the studied three-dimensional simulation to be computed. Findings On the basis of the conducted research, in particular, taking into account three-dimensional simulations, it was stated that the formulated model with the developed method provides an efficient, structural quality estimation tool applicable for a wide variety of three-dimensional images. The obtained results indicate that the wrought method has huge potential in the application of high-resolution simulations by enabling a screening test of the structural quality of the stereoscopic view in quasi-real time. Practical implications The developed method may be used both in order to verify the quality of ready-to-use three-dimensional image and also at the stage of the calibration of input parameters of the simulation. Originality/value The paper takes into account the selection of the most significant distortions which occur in visual, three-dimensional simulations providing a cost-effective and versatile tool which allows for the detection and elimination of serious mistakes and dysfunctions as early as at the calibration stage.

scholarly journals Fuzzy Evaluation Model of Process Improvement Capability with Costs Consideration

2021 ◽  
Vol 11 (10) ◽  
pp. 4344
Author(s):  
Kuen-Suan Chen ◽  
Shui-Chuan Chen ◽  
Ting-Hsin Hsu ◽  
Min-Yi Lin ◽  
Chih-Feng Wu
Keyword(s):  
Process Improvement ◽  
Quality Evaluation ◽  
Evaluation Model ◽  
Fuzzy Evaluation ◽  
Sampling Errors ◽  
Capability Index ◽  
Testing Method ◽  
Improvement Potential ◽  
Testing Accuracy

The Taguchi capability index, which reflects the expected loss and the yield of a process, is a useful index for evaluating the quality of a process. Several scholars have proposed a process improvement capability index based on the expected value of the Taguchi loss function as well as the corresponding cost of process improvement. There have been a number of studies using the Taguchi capability index to develop suppliers’ process quality evaluation models, whereas models for evaluating suppliers’ process improvement potential have been relatively lacking. Thus, this study applies the process improvement capability index to develop an evaluation model of the supplier’s process improvement capability, which can be provided to the industry for application. Besides, owing to the current need to respond quickly, coupled with cost considerations and the limits of technical capabilities, the sample size for sampling testing is usually not large. Consequently, the evaluation model of the process improvement capability developed in this study adopts a fuzzy testing method based on the confidence interval. This method reduces the risk of misjudgment due to sampling errors and improves the testing accuracy because it can incorporate experts and their accumulated experiences.

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.

scholarly journals Evaluation of Teaching Quality of College Physical Education Based on Analytic Hierarchy Process

2020 ◽  
Vol 15 (10) ◽  
pp. 86
Author(s):  
Ke Han
Keyword(s):  
Quality Evaluation ◽  
Evaluation Model ◽  
Teaching Quality ◽  
Grey System ◽  
Analytic Hierarchy ◽  
Evaluation Systems ◽  
Evaluation Of Teaching ◽  
Set Up ◽  
Hierarchy Process

There are many difficulties in the evaluation of the teaching quality of phys-ical education (PE) in colleges: the evaluation factors are complicated, the evaluation systems are incomplete, and the evaluation methods are not com-prehensive enough. To overcome these difficulties, this paper introduces an-alytic hierarchy process (AHP) to the evaluation of PE teaching quality in colleges. Firstly, the authors identified the influencing factors of PE teaching in colleges today. Next, an index system was established for the evaluation, and an evaluation model was set up based on the AHP and grey system theo-ry (GST). Finally, our method was proved feasible through example analysis. The research results provide new insights on the application of state-of-the-art theories in quality evaluation of higher education.

Qualitative Assessment of Four Types of Three-Dimensional Printed Anatomical Tibial Bone Models Compared to Commercially Available Models

2020 ◽  
Vol 33 (04) ◽  
pp. 267-273
Author(s):  
Sarah Malek ◽  
Cassandra D. Foster ◽  
Davin H. Huston
Keyword(s):  
Model Development ◽  
Three Dimensional ◽  
Acrylonitrile Butadiene Styrene ◽  
Cost Effective ◽  
Qualitative Assessment ◽  
Tibial Bone ◽  
Cost Effective Alternative ◽  
Polylactide Acid ◽  
Physical Features

Abstract Objective The aim of this study was to compare technical and physical features of four three-dimensional printed bone models used for teaching purposes to commercial models. Study Design A canine tibia was imaged using computed tomography and used for model development. Tibial models were printed using Resin, polylactide acid (PLA), acrylonitrile butadiene styrene (ABS) and high-impact polystyrene (HIPS). They were compared with two commercial models (SAWBONES 2117 and 2108). Models were drilled in three locations and then cut transversely. Subjective quality of models, time and cost of production were compared. Results Print time was approximately 3 hours for Resin and 4 hours for each of the PLA, ABS and HIPS models. Unlike the Resin and SAWBONES, the PLA, HIPS and ABS had higher heat generation during both drilling and cutting with mild construct deformation at cut surfaces in ABS and PLA models. Characteristics of real bone during drilling and cutting were best simulated in decreasing order by Resin, PLA, ABS and HIPS followed by SAWBONES 2117 and 2108 models. Material costs were $14.6 (Resin), $0.48 (PLA/ABS), $1.52 (HIPS), $23.50 and $17.50 for SAWBONES 2117 and 2108 per model, respectively. Resin performed best and had the closest subjective tactile properties to real bone. Conclusion The three-dimensional printed tibial bone models provide a cost-effective alternative to commercially available bone models in veterinary medicine as teaching models.

An Evaluation Model of Polytechnic Teaching Quality Based on ID3 Decision Making Tree

2014 ◽  
Vol 651-653 ◽  
pp. 2437-2440 ◽  
Author(s):  
Wu Xue Jiang ◽  
Yin Zhen Zhong ◽  
Huan Liang
Keyword(s):  
Decision Tree ◽  
Quality Evaluation ◽  
Teaching Practice ◽  
Evaluation Model ◽  
Teaching Quality ◽  
Practical Significance ◽  
Research Progress ◽  
Apriori Algorithm ◽  
High Credibility

For improving the quality of vocational education evaluation validity, this paper introduces the research progress of teaching evaluation, use data mining technology to put forward a feasible model of higher vocational teaching quality evaluation, construct a decision tree has practical significance. By the method used, the traditional Apriori algorithm is improved decision tree to improve the teaching contents to the location of the second master node, reflecting the characteristics of vocational teaching practice. Case analysis indicated, the decision tree has a good operability and high credibility.

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.

Evaluation Model Using the AHP of Ecological Environmental Quality of Jiuyuangou Watershed in the Loess Plateau

2011 ◽  
Vol 356-360 ◽  
pp. 2571-2574 ◽  
Author(s):  
Feng Gang Dai ◽  
Xiao Gang Fu ◽  
Huan Jie Cai
Keyword(s):  
Loess Plateau ◽  
Water Conservation ◽  
Quality Evaluation ◽  
Comprehensive Evaluation ◽  
Evaluation Model ◽  
Fuzzy Comprehensive Evaluation ◽  
Ecological Environment ◽  
The Loess Plateau ◽  
Environment Quality

In this paper, based on the healthy development of ecological environment in the Loess Plateau area , proposed 18 indices of ecological environment quality evaluation, established index system of ecological environment quality evaluation and fuzzy comprehensive evaluation model. Taking Jiuyuangou basin as example, made a conclusion that Jiuyuangou ecological quality of the environment is under Ⅱ, fragile ecological environment quality for the general area, it is because of measures implementation of the Soil and Water Conservation Demonstration Area to increase the vegetation cover, soil erosion control, and promote the improvement of ecological environment.

Adaptive Image Generalized Fuzzy Enhancement and Quality Evaluation

2014 ◽  
Vol 590 ◽  
pp. 736-740
Author(s):  
Fa Yi Cui ◽  
Lei Lei Ma
Keyword(s):  
Feature Detection ◽  
Quality Evaluation ◽  
Quality Standard ◽  
Image Feature ◽  
Evaluation Standard ◽  
Fuzzy Enhancement ◽  
Fuzzy Space ◽  
Optimal Values ◽  
Membership Grade ◽  
Optimal Quality

Before image feature detection and recognition, image enhancement can highlight the main people or things and their details from foreground, and also can suppress the useless information from background effectively. An algorithm model of adaptive image generalized fuzzy enhancement is established. For all aspects of the algorithm model, a variety of computing forms are put forward, and the evaluation standard of image quality is defined. The principle of algorithm is to achieve space transform between image gray space and generalized fuzzy space using generalized membership transform and its adverse transform. In the process of space transform, the contrast among successive region for space of generalized fuzzy membership grade is enhanced by generalized fuzzy enhancement function. Enhanced images are evaluated by quality standard, and the optimal values of adjustable parameters of membership grade transformation function and the fuzzy enhancement function are selected adaptively based on the optimal quality. Then, the enhanced image with best quality can be obtained. Experiments show that the extracted contour of enhanced image is structured, weak-edge-highlighting, and rich-detail.

An artificial intelligence based model for evaluation of college students’ ability and characteristics through teaching evaluation

2020 ◽  
pp. 1-11
Author(s):  
Bin Li ◽  
Yanying Fei ◽  
Hui Liu
Keyword(s):  
Evaluation System ◽  
Quality Evaluation ◽  
Evaluation Model ◽  
Teaching Quality ◽  
Colleges And Universities ◽  
Developmental Potential ◽  
The Core ◽  
Academic Level ◽  
Quality Evaluation System

The teaching quality is the core of sustainable development in colleges and universities. The constructing scientific and reasonable teaching quality evaluation system is the key of teaching quality evaluation. This paper takes the quality of graduates as the core content, establishes a results-oriented teaching quality evaluation system in colleges and universities, and finds that the academic level of graduates and the level of competition in career selection are two quantitative dimensions reflecting the quality of graduates. Based on this, this paper establishes the evaluation model of the developmental potential index and gives the reference of the norm of teaching effect evaluation for self-evaluation. Finally, this paper discusses the components of graduate quality and the way to construct the evaluation system.

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