Applying the Fuzzy Inference Model in Maintenance Centered to Safety

2020 ◽  
pp. 142-165
Author(s):  
Predrag D. Jovančić ◽  
Miloš Tanasijević ◽  
Vladimir Milisavljević ◽  
Aleksandar Cvjetić ◽  
Dejan Ivezić ◽  
...  
Keyword(s):  
Working Conditions ◽  
Fuzzy Inference ◽  
Main Idea ◽  
Statistical Processing ◽  
Engineering System ◽  
Engineering Systems ◽  
Inference Model ◽  
Processing Level

The main idea of this chapter is to promote maintenance centered to safety, in accordance to adaptive fuzzy inference model, which has online adjustment to working conditions. Input data for this model are quality of service indicators of analyzed engineering system: reliability, maintainability, failure consequence, and severity and detectability. Indicators in final form are obtained with permanent monitoring of the engineering system and statistical processing. Level of safety is established by composition and ranking of indicators according to fuzzy inference engine. The problem of monitoring and processing of indicators comprising safety is solved by using the features that Industry4.0 provides. Maintenance centered to safety is important for complex, multi-hierarchy engineering systems. Sudden failures on such systems could have significant financial and environmental effect. Developed model will be tested in the final part of the chapter, in the case study of bucket wheel excavator.

scholarly journals Fair trade in building digital knowledge repositories: the knowledge economy as if researchers mattered

2020 ◽  
Vol 23 (4) ◽  
pp. 549-563 ◽  
Author(s):  
Giovanni De Grandis
Keyword(s):  
Quality Of Life ◽  
Working Conditions ◽  
Fair Trade ◽  
Knowledge Economy ◽  
High Profile ◽  
Knowledge Repositories ◽  
Academic Researchers ◽  
Digital Knowledge

Abstract Both a significant body of literature and the case study presented here show that digital knowledge repositories struggle to attract the needed level of data and knowledge contribution that they need to be successful. This happens also to high profile and prestigious initiatives. The paper argues that the reluctance of researchers to contribute can only be understood in light of the highly competitive context in which research careers need to be built nowadays and how this affects researchers’ quality of life. Competition and managerialism limit the discretion of researchers in sharing their results and in donating their working time. A growing corpus of research shows that academic researchers are increasingly overworked and highly stressed. This corroborates the point that the room for undertaking additional tasks with future and uncertain benefits is very limited. The paper thus recommends that promoters of digital knowledge repositories focus on the needs of the researchers who are expected to contribute their knowledge. In order to treat them fairly and to ensure the success of the repositories, knowledge sharing needs to be rewarded so as to improve the working conditions of contributors. In order to help implementing this researcher-centred approach, the paper proposes the idea of expediential trust: rewards for contributing should be such that rational, self-interested researchers would freely decide to contribute their knowledge and effort trusting that this would make them better off.

A Method of Object Oriented Information Management for Layout Design

1995 ◽  
Author(s):  
Paul Vallis ◽  
Jonathan S. Colton
Keyword(s):  
Information Management ◽  
Design Process ◽  
Object Oriented ◽  
Spatial Arrangement ◽  
Layout Design ◽  
Management Systems ◽  
Engineering System ◽  
Information Management Systems

Abstract During the layout design process, the spatial arrangement of components in an engineering system is developed in order to meet design goals and constraints. Proper organization of the information involved in this process enhances the quality of layout designs. The organization of information is accomplished through the use of the techniques and methods existing in the information management field. Using the object-oriented technique, a method was developed to guide the design of information management systems that support the layout design process. The method was developed in a case study involving the layout design of automobile engine bay components.

scholarly journals Spanning the complexity chasm: A research approach to move from simple to complex engineering systems

2014 ◽  
Vol 28 (4) ◽  
pp. 369-384 ◽  
Author(s):  
Vimal Viswanathan ◽  
Julie Linsey
Keyword(s):  
Design Thinking ◽  
Physical Models ◽  
Research Approach ◽  
Engineering System ◽  
Engineering Systems ◽  
Complex Engineering ◽  
Complex Engineering Systems ◽  
Complex System Design ◽  
Cost Effect

AbstractA multistudy approach is presented that allows design thinking of complex systems to be studied by triangulating causal controlled lab findings with coded data from more complex products. A case study illustration of this approach is provided. During the conceptual design of engineering systems, designers face many cognitive challenges, including design fixation, errors in their mental models, and the sunk cost effect. These factors need to be mitigated for the generation of effective ideas. Understanding the effects of these challenges in a realistic and complex engineering system is especially difficult due to a variety of factors influencing the results. Studying the design of such systems in a controlled environment is extremely challenging because of the scale and complexity of such systems and the time needed to design the systems. Considering these challenges, a mixed-method approach is presented for studying the design thinking of complex engineering systems. This approach includes a controlled experiment with a simple system and a qualitative cognitive-artifacts study on more complex engineering systems followed by the triangulation of results. The triangulated results provide more generalizable information for complex system design thinking. This method combines the advantages of quantitative and qualitative study methods, making them more powerful while studying complex engineering systems. The proposed method is illustrated further using an illustrative study on the cognitive effects of physical models during the design of engineering systems.

scholarly journals Questionnaire Survey Focused on the Quality of the Working Environment of Industrial Plants: Case Study

2020 ◽  
Vol 2 (6) ◽  
Author(s):  
Miriama Piňosová
Keyword(s):  
Working Conditions ◽  
Scientific Field ◽  
Working Environment ◽  
Industrial Plants ◽  
Scientific Methods ◽  
Workplace Factors ◽  
Questionnaire Surveys ◽  
The Individual

There are different views on questionnaire surveys among researchers. Some experts question their use in the scientific field because of great subjectivity. However, using the current scientific methods of creating questionnaires, respondent’s selection, surveying itself and, in particular, evaluating, we can achieve interesting results that can then be verified by other, more suitable methods. The basic idea behind creating a questionnaire was to find out in what working conditions the respondents work and what desired or undesired impacts they are exposed to during their work. We have processed this questionnaire so that it is suitable for all types of operations and for all types of workplace factors. When designing the individual questions of the questionnaire, we tried not to deviate from the relation between the questions and the studied issue. We tried to formulate the questions in a clear way so that they would not be interpreted as obscure or ambiguous. The questions were not suggestive, and rather served as guidelines without suggesting any specific answers. We also tried to ask questions that would not require certain knowledge or information that respondents did not have.

scholarly journals Problems of Editing in the Italian Translation of Noam Chomsky’s The New Military Humanism — Lessons from Kosovo: A Case Study

2004 ◽  
Vol 47 (4) ◽  
pp. 564-574
Author(s):  
Sabrina Fusari
Keyword(s):  
Working Conditions ◽  
Italian Translation ◽  
Publishing Houses ◽  
The Relationship

Abstract In this paper, I discuss a number of problems that arise in the relationship between free-lance translators and in-house editors in the publishing sector. In the first part, I discuss the general problems that may arise when a translation is revised by in-house editors. In the second part of my paper, I analyse the characteristics of translators’ mistakes. I then discuss a case study, i.e., problems in the editing of the Italian translation of Noam Chomsky’s The New Military Humanism. In the fourth and last part, I draw some general conclusions and propose ways to change the relationship between translators and publishing houses in order to improve the working conditions of translators as well as the quality of publications.

A Case Study: A Systems Approach for 20ksi Equipment Qualification

2019 ◽  
Author(s):  
James B. Raney ◽  
Gregg Walz ◽  
Dennis Kaminski
Keyword(s):  
Systems Engineering ◽  
Systems Approach ◽  
Engineering Systems ◽  
Functional Requirements ◽  
Industry Standards ◽  
Mode Of Operation ◽  
Operational Modes ◽  
Equipment Qualification

Abstract Beginning in August 2013, Anadarko Petroleum formed the “20A Project Initiative” for qualifying 20 ksi equipment for a Deepwater Gulf of Mexico (GoM) development. This paper will cover the systems approach used for the qualification (verification, validation and quality) of a system of components, including sub-assemblies and assemblies that are required for a 20 ksi development. The systems approach begins with the framework and management of this framework inside the overall development process. The systems approach categorizes each component by mode of operation (many pieces of equipment are used in multiple operational modes). These modes of operation are Drilling, Completions, Production and Intervention, and are the engineering systems used to manage the qualification of over 200 components to industry standards and U.S. government requirements. The functional requirements for each component are defined and vendors selected. Each component is then stewarded through a project-management process for design, verification, validation and quality. This process culminates with the integration of these components back into a system that can be qualified for use in an HPHT environment. This paper addresses the submittal to regulatory authority for approval to use the newly developed and qualified 20 ksi equipment for a deepwater GoM development. This project ends in 2019. This six-year development journey presented challenges and achieved breakthrough technologies for the industry. This journey, its organizational approach using systems engineering techniques and integration processes are presented.

scholarly journals Fuzzy Inference Model for Decision Support in Sustainable Production Planning Processes—A Case Study

2021 ◽  
Vol 13 (3) ◽  
pp. 1355
Author(s):  
Maximilian Zarte ◽  
Agnes Pechmann ◽  
Isabel L. Nunes
Keyword(s):  
Production Planning ◽  
Fuzzy Inference ◽  
Production Systems ◽  
Single Case ◽  
Inference Model ◽  
Health Crisis ◽  
Customer Expectations ◽  
Planning Processes ◽  
Climate Crisis

Due to crises (e.g., climate crisis, extinction of species, shortage of natural resources, human health crisis), customer requirements for conventionally produced products shift to more sustainably produced products, reducing and avoiding negative environmental and social impacts. Circular thinking in production systems offers new opportunities to meet these new customer expectations. However, it enlarges new challenges for production planning too. Research gaps exist in production planning approaches, considering all three sustainability aspects (economic, environmental, and social) simultaneously. This paper presents a concept of a fuzzy inference model (FIM) to assess the sustainability of production programs. The FIM concept is demonstrated and tested using a single case study considering lab production schedules. The model’s outcome indicates the most significant opportunities to improve production programs’ sustainability using experts’ knowledge.

scholarly journals The Measurement Model of Tourism Destination Images Using Fuzzy Inference System

2018 ◽  
Vol 1 (2) ◽  
pp. 106-112
Author(s):  
I Nyoman Sutapa ◽  
Magdalena Wullur
Keyword(s):  
Fuzzy Inference System ◽  
Fuzzy Inference ◽  
Measurement Model ◽  
Tourism Destination ◽  
Inference Model ◽  
Inference System ◽  
Five Dimensions ◽  
Tourism Destinations ◽  
Quantitative Assessments

The article discusses the measurement model of tourism destination images perceived by travellers based on five dimensions of the service quality, i.e. tangibles, reliability, responsiveness, empathy, and assurance. Measurement problems occur when a traveller assesses the quality of a tourism destination service subjectively with vague boundaries and perceives the image of a tourism destination to vary. To address these issues, we designed an inference model using Mamdani's fuzzy inference system. The results of this study are quantitative assessments of the image of tourism destinations by various travellers based on qualitative perceptions of the quality of service experienced by the traveller.    

scholarly journals DEVELOP A FUZZY INFERENCE MODEL TO MEASURE THE QUALITY OF PROJECT MANAGEMENT PROCESSES IN A THIRD SECTOR INSTITUTION

2021 ◽  
Vol 9 (10) ◽  
pp. 246-283
Author(s):  
Juliana Câmara de Souza ◽  
Manoel Henrique Reis Nascimento
Keyword(s):  
Project Management ◽  
Fuzzy Inference ◽  
Fuzzy Model ◽  
Third Sector ◽  
Business Environment ◽  
Inference Model ◽  
Output Variable ◽  
Management Processes ◽  
Fuzzy Logic Method

The contemporary business environment seeks continuous improvement to remain competitive in the market, as customers increasingly demand quality products or services. In this perspective, this paper presents a methodology aimed at evaluating the quality of processes in the project management sector in a Third Sector Organization, based on the Fuzzy mathematical model. For this, linguistic variables (input) were developed according to information obtained from company Y, which enabled the application of the Fuzzy Logic method, in order to determine the output variable, which in this case is quality. After determining the rules, it was possible to obtain results that show that the developed fuzzy model has the potential to help improve the quality of processes.

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