Optimization for Spindle of Jade Carving Machine Based on Fuzzy Reliability Theory

2010 ◽  
Vol 37-38 ◽  
pp. 801-805
Author(s):  
Huai Rong Shi ◽  
Yan Nian Rui
Keyword(s):  
Reliability Theory ◽  
Fuzzy Reliability ◽  
Design Quality ◽  
Combined Model ◽  
Mechanical Process ◽  
Fuzzy Variables ◽  
Mechanical Products ◽  
Machine Spindle ◽  
Full Consideration

In machines working under the effect of alternating stresses, the fatigue bending deflection occured occasionally. On the basis of the Fuzzy Reliability Theory and with full consideration of the fuzzy factors during mechanical process, the paper studied the fuzzy reliability optimal design for the hollow spindle of multi-functional jade carving machine and improved the design quality of the jade carving machine spindle by probing into the combined model constructed by the random variables and fuzzy variables. The design was approved to be advanced, reliable and practical in service and provided a new way for the design of multifunctional jade carving machine spindle and other mechanical products.

The Method of Calculation of Building Structures by Reliability Level

2020 ◽  
Vol 786 (11) ◽  
pp. 54-59
Author(s):  
Yu.A. BELENTSOV ◽  
Keyword(s):  
Strength Class ◽  
Probability Of Failure ◽  
Reliability Theory ◽  
Building Structures ◽  
Design Quality ◽  
Method Of Calculation ◽  
Reliability Level ◽  
Modulus Of Deformation ◽  
Design Construction

The analysis of the problem of calculating the bearing capacity of structures, taking into account the guaranteed level of reliability and failure-free operation, was carried out. On the basis of the works of N. N. Streletsky, A. R. Rzhanits and others, bottlenecks are established that do not make it possible to design structures with a guaranteed level of reliability and failure-free operation, despite the introduction of the concept of strength class and the existing reliability theory. According to the failure-free operation indicator, a scheme for normalizing the reliability of designed building structures is proposed and is interrelated with the assessment of the quality of structures being built. Guaranteed design quality indicators with a set probability of failure-free operation that are not related to strength are introduced: geometric dimensions, modulus of deformation and elasticity, taking into account the variability of properties and technology. The corresponding reserve coefficients ensuring the required probability of failure-free operation are determined. The scheme for calculating the design of structures with the required level of reliability is developed in the process of design, construction and operation of structures, taking into account the completeness and reliability of information on the results of quality control, during operation, taking into account the reduction of physical, mechanical and other properties of structures.

The Selection Evaluation of Design Bidding

2014 ◽  
Vol 501-504 ◽  
pp. 2638-2641 ◽  
Author(s):  
Peng Cheng Pan ◽  
Yanan Shao ◽  
Huan Liu
Keyword(s):  
Index System ◽  
Evaluation Index System ◽  
Evaluation Index ◽  
Design Teams ◽  
Design Quality ◽  
Quality Cost ◽  
Quality Design

The quality of the project depends firstly on the design. Selected excellent design units can help the owner to realize the projects quality, cost and schedule target. The principles of the evaluation in design bidding were discussed in this paper. The design quality, design fees quotation, design teams service commitments, design teams ability, design institutions strength, and design institutions reputation were given as the six aspects of evaluation index system. last, the organization of evaluator was discusses.

Modal Analysis and Optimization of Spindle Box of Turn-Milling Center Based on Finite Element Method

2012 ◽  
Vol 226-228 ◽  
pp. 281-284
Author(s):  
Li Da Zhu ◽  
Xiao Bang Wang ◽  
Tiao Biao Yu ◽  
Wan Shan Wang
Keyword(s):  
Finite Element ◽  
Natural Frequencies ◽  
Element Model ◽  
Ansys Software ◽  
Design Requirement ◽  
Design Quality ◽  
Machining Center ◽  
Main Components ◽  
Turn Milling

The dynamic characteristics of machine tool may directly affect its machining capability, which is analyzed to improve the machining precision and efficiency. In this paper, the 3D finite element model of main components turn-milling center is established by using ANSYS software, and then spindle box of turn-milling center is analyzed and optimized; the natural frequencies and vibration models are obtained after analysis, which guarantee the design requirement of the machining center. Therefore it is significant to improve the design quality of machining center by using FEA software in the design process.

Multi-criteria Web Services Selection: Balancing the Quality of Design and Quality of Service

2022 ◽  
Vol 22 (1) ◽  
pp. 1-31
Author(s):  
Marwa Daaji ◽  
Ali Ouni ◽  
Mohamed Mohsen Gammoudi ◽  
Salah Bouktif ◽  
Mohamed Wiem Mkaouer
Keyword(s):  
Quality Of Service ◽  
Web Services ◽  
Web Service ◽  
State Of The Art ◽  
Service Selection ◽  
Service Design ◽  
Design Quality ◽  
Trade Off ◽  
Selection Approach

Web service composition allows developers to create applications via reusing available services that are interoperable to each other. The process of selecting relevant Web services for a composite service satisfying the developer requirements is commonly acknowledged to be hard and challenging, especially with the exponentially increasing number of available Web services on the Internet. The majority of existing approaches on Web Services Selection are merely based on the Quality of Service (QoS) as a basic criterion to guide the selection process. However, existing approaches tend to ignore the service design quality, which plays a crucial role in discovering, understanding, and reusing service functionalities. Indeed, poorly designed Web service interfaces result in service anti-patterns, which are symptoms of bad design and implementation practices. The existence of anti-pattern instances in Web service interfaces typically complicates their reuse in real-world service-based systems and may lead to several maintenance and evolution problems. To address this issue, we introduce a new approach based on the Multi-Objective and Optimization on the basis of Ratio Analysis method (MOORA) as a multi-criteria decision making (MCDM) method to select Web services based on a combination of their (1) QoS attributes and (2) QoS design. The proposed approach aims to help developers to maintain the soundness and quality of their service composite development processes. We conduct a quantitative and qualitative empirical study to evaluate our approach on a Quality of Web Service dataset. We compare our MOORA-based approach against four commonly used MCDM methods as well as a recent state-of-the-art Web service selection approach. The obtained results show that our approach outperforms state-of-the-art approaches by significantly improving the service selection quality of top- k selected services while providing the best trade-off between both service design quality and desired QoS values. Furthermore, we conducted a qualitative evaluation with developers. The obtained results provide evidence that our approach generates a good trade-off for what developers need regarding both QoS and quality of design. Our selection approach was evaluated as “relevant” from developers point of view, in improving the service selection task with an average score of 3.93, compared to an average of 2.62 for the traditional QoS-based approach.

scholarly journals The Nature and Role of User Beliefs Regarding a Website's Design Quality

2020 ◽  
Vol 32 (1) ◽  
pp. 75-96 ◽  
Author(s):  
Camille Grange ◽  
Henri Barki
Keyword(s):  
Information Quality ◽  
Past Research ◽  
Design Guidelines ◽  
Ease Of Use ◽  
Research Model ◽  
System Quality ◽  
Design Quality ◽  
It Acceptance

Researchers and practitioners have long been interested in identifying the criteria that users consider important in assessing whether a system is worth using. However, past research in this domain has not taken into account the characteristics of a system's design and their quality in a systematic and comprehensive manner, which is likely to have limited the development of actionable design guidelines. The article addresses this issue by suggesting a research model that links user beliefs—which have traditionally been used in IT acceptance and success research (i.e., information quality, system quality, usefulness, and ease of use)—to their beliefs regarding the quality of three categories of a system's design (i.e., visual quality, page layout quality, and navigation quality) and testing it in the context of organizational intranets. The analysis of data collected from 159 intranet website users in three organizations supported the model, suggesting that the three categories of design quality beliefs significantly influenced users' assessment of their system's information quality and system quality.

scholarly journals PREDICTION OF DESIGN ASPECTS OF WEB PAGE BY HTML PARSER

2020 ◽  
Vol 5 (2) ◽  
pp. 143-158
Author(s):  
Satinder Kaur ◽  
Sunil Gupta
Keyword(s):  
User Interaction ◽  
Web Pages ◽  
Evaluation Tool ◽  
Web Page ◽  
Design Quality ◽  
Automated Evaluation ◽  
The World ◽  
Before And After ◽  
The Web

Inform plays a very important role in life and nowadays, the world largely depends on the World Wide Web to obtain any information. Web comprises of a lot of websites of every discipline, whereas websites consists of web pages which are interlinked with each other with the help of hyperlinks. The success of a website largely depends on the design aspects of the web pages. Researchers have done a lot of work to appraise the web pages quantitatively. Keeping in mind the importance of the design aspects of a web page, this paper aims at the design of an automated evaluation tool which evaluate the aspects for any web page. The tool takes the HTML code of the web page as input, and then it extracts and checks the HTML tags for the uniformity. The tool comprises of normalized modules which quantify the measures of design aspects. For realization, the tool has been applied on four web pages of distinct sites and design aspects have been reported for comparison. The tool will have various advantages for web developers who can predict the design quality of web pages and enhance it before and after implementation of website without user interaction.

scholarly journals Next Generation Architect

2021 ◽  
Author(s):  
◽  
Terian Le Compte
Keyword(s):  
Affordable Housing ◽  
Living Conditions ◽  
Next Generation ◽  
Design Quality ◽  
Building Information Modelling ◽  
Building Information ◽  
Cost Implications ◽  
The Cost

<p>The stereotype of an architect is expensive, with minimal consideration and awareness towards cost and budget. This is damaging the reputation of the profession. This thesis will look at the Next Generation Architect who combines both design and construction to understand the cost implications from the start to the completion of the project. A Next Generation Architect works with an innovative approach that is more affordable to how they currently practice. They design houses that are both economical and retain a strong design quality, through the value of the aesthetics, materials, and living conditions. An effective architect should be able to design, mindful of costs, along with the implications involved and actively manage the costs, based on design decisions made.  This research will commence by exploring tactics of affordability, housing economics, and costing and design tactics, to portray exemplars of affordable housing. Elements will be costed with data from QV costbuilder implemented through the use of Building information modelling (BIM) through Revit. The architectural value will explore the use of materials, living conditions, economics, and lifecycle to optimise the design. A series of precedents will be analysed to gain an understanding of the techniques of affordable methods used within New Zealand’s construction industry.  This thesis aims to provide architecturally designed and preliminarily costed affordable architectural products. Through a series of architecturally designed standalone houses that explore affordability, and tested through the use of architecture as a product across four sites, displaying different site conditions of the Wellington region.  This thesis will portray efficient, economic building and design techniques and cost monitoring while retaining a strong architectural quality.  The aim is to convey the contemporary role of a Next Generation Architect who works accurately with value. Who is mindful of costs and designs economically, without compromising the quality of an architecturally designed product.</p>

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