A state-of-the-art survey on spherical fuzzy sets1

2021 ◽  
pp. 1-18
Author(s):  
Eren Ozceylan ◽  
Baris Ozkan ◽  
Mehmet Kabak ◽  
Metin Dagdeviren
Keyword(s):  
Fuzzy Sets ◽  
Fuzzy Set ◽  
State Of The Art ◽  
Descriptive Analysis ◽  
Past Research ◽  
Three Dimensions ◽  
Future Research ◽  
Systematic Review Methodology ◽  
Existing Structures ◽  
Scientific Papers

In addition to the well-known fuzzy sets, a novel type of fuzzy set called spherical fuzzy set (SFS) is recently introduced in the literature. SFS is the generalized structure over existing structures of fuzzy sets (intuitionistic fuzzy sets-IFS, Pythagorean fuzzy sets-PFS, and neutrosophic fuzzy sets-NFS) based on three dimensions (truth, falsehood, and indeterminacy) to provide a wider choice for decision-makers (DMs). Although the SFS has been introduced recently, the topic attracts the attention of academicians at a remarkable rate. This study is the expanded version of the authors’ earlier study by Ozceylan et al. [1]. A comprehensive literature review of recent and state-of-the-art papers is studied to draw a framework of the past and to shed light on future directions. Therefore, a systematic review methodology that contains bibliometric and descriptive analysis is followed in this study. 104 scientific papers including SFS in their titles, abstracts and keywords are reviewed. The papers are then analyzed and categorized based on titles, abstracts, and keywords to construct a useful foundation of past research. Finally, trends and gaps in the literature are identified to clarify and to suggest future research opportunities in the fuzzy logic area.

scholarly journals Lean implementation within SMEs: a literature review

2015 ◽  
Vol 26 (7) ◽  
pp. 980-1012 ◽  
Author(s):  
Qing Hu ◽  
Robert Mason ◽  
Sharon J. Williams ◽  
Pauline Found
Keyword(s):  
Operations Management ◽  
Success Factors ◽  
Descriptive Analysis ◽  
Academic Community ◽  
Future Research ◽  
Systematic Review Methodology ◽  
Lean Implementation ◽  
Content Type ◽  
Road Map ◽  
The Impact

Purpose – Lean business ideology has been one of the recent dominant research areas in operations management. However, there is a dearth of research focusing on Lean in small- and medium-sized enterprises (SMEs). The purpose of this paper is to fill this gap by systematically reviewing the literature in relation to the implementation of Lean in SMEs. Design/methodology/approach – Tranfield et al.’s (2003) systematic review methodology was employed covering three stages: planning, conducting and reporting/dissemination. Findings – A descriptive analysis of the papers reviewed is provided. From the thematic analysis of the literature four main themes are identified: the scope/type of Lean being adopted by SMEs, how Lean is used in SMEs, the impact of Lean implementation on SMEs and the critical success factors for Lean implementation in SMEs. Key inhibitors and enablers related to firm size when implementing Lean are also identified in the concluding discussion. Research limitations/implications – Nine recommendations for future research are developed associated with Lean implementation in SMEs. Practical implications – The authors suggest SMEs to integrate organisational factors such as employee empowerment and the development of a supportive strategy into their Lean implementation plans. A preliminary “Staircase Road Map” to guide SMEs in implementing Lean is also developed. Originality/value – This paper goes beyond previous literature reviews of Lean by systematically and critically evaluating key themes of Lean implementation within an SME environment. It not only provides a road map for SME owners/managers who intend to implement Lean, but also provides the academic community with an agenda for future research.

scholarly journals Six-Steps Process of Structural Assessment of Heritage Timber Structures: Definition Based on the State of the Art

Buildings ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 109 ◽  
Author(s):  
Elena Perria ◽  
Mike Sieder
Keyword(s):  
State Of The Art ◽  
Construction Material ◽  
Assessment Process ◽  
Future Research ◽  
Timber Structures ◽  
Assessment Approach ◽  
Scientific Papers ◽  
Residual Performance ◽  
Definition Of ◽  
Correct Design

Each construction material deals with specific mechanical properties, their distribution, damage mechanisms, and degradation processes. Therefore, each material requires a particular assessment approach in order to derive a reliable description of the residual performance of the structure, correctly remove the cause of damage, and proceed with the correct design of interventions. The aims of this paper are, first, the definition of a process of assessment and retrofitting of existing timber structures, both for engineered and heritage/traditional timber structures, and second, a comparison between the defined assessment process and its contents, and the content of existing guidelines, codes, and standards. In order to gain a definition of the process of assessment and retrofitting of existing timber structures, the content of scientific papers and articles was analyzed, and on this basis, an assessment process with six main steps and three milestones was developed. The content of the guidelines, codes and standards was afterwards analyzed basing on this six-steps assessment process. From a comparison among the current literature, guidelines, codes, and standards, interesting results emerged that gave us a picture of the European knowledge and interests on the assessment of existing timber structures. Not only agreement, but also discrepancies, variances, and incongruities were identified as possible topics for future research.

scholarly journals Individual Differences in Parental Support for Numeracy and Literacy in Early Childhood

2021 ◽  
Vol 11 (9) ◽  
pp. 541
Author(s):  
Leanne Elliott ◽  
Peter Zheng ◽  
Melissa Libertus
Keyword(s):  
Parental Support ◽  
Past Research ◽  
Parental Beliefs ◽  
Two Dimensions ◽  
Early Years ◽  
Home Literacy ◽  
Three Dimensions ◽  
Future Research ◽  
Socioeconomic Resources ◽  
Literacy Activities

Past research has examined parental support for children’s math and reading skills in the early years through parents’ reports of their activities with their children in somewhat inconsistent ways. In this study, we use data from a large sample of parents (n = 259; 103 males) collected through Amazon’s Mechanical Turk to examine dimensions of parental enrichment in both support for literacy and numeracy skills at home. Additionally, we examine how socioeconomic resources as well as parental beliefs relate to these dimensions of the home literacy and home numeracy environment. Factor analyses revealed two dimensions of literacy activities (i.e., passive and active literacy activities) and three dimensions of numeracy activities (i.e., numeracy applications, basic numeracy, and written numeracy activities). Income was positively associated with active literacy activities, whereas parents’ educational attainment was negatively associated with active literacy activities and written numeracy activities. Additionally, parental beliefs, including their beliefs about the importance of literacy and math skills as well as their perceived responsibility for teaching their children reading, math, and language skills, related to home literacy and numeracy activities in distinctive ways. These results suggest that future research should explore parental enrichment practices with greater nuance, particularly when examining associations with socioeconomic status.

Gamification-as-Innovation: A Review

2021 ◽  
pp. 2130002
Author(s):  
Fatemah M. AlSaad ◽  
Christopher M. Durugbo
Keyword(s):  
State Of The Art ◽  
Future Research ◽  
Learning Approaches ◽  
Systematic Review Methodology ◽  
Research Directions ◽  
Digital Platforms ◽  
Game Mechanics ◽  
Strategic Initiatives ◽  
Future Research Directions ◽  
Multi Level

Gamification is a paradigm and process innovation premised on applying game mechanics to non-game settings with benefits of creative games designs and disruptive effects challenging conventional learning approaches. The purpose of this study is to review the literature on gamification-as-innovation. Applying the systematic review methodology, this study examines 96 articles and identifies developments in gamification-as-innovation in literature. Insights from the review suggests three main perspectives on gamification-as innovation in processes that reveal problems (investigation), stimulate novel behavior (induction) or transform processes (intervention) for improved effectiveness and engagement. The review also captures the state-of-the-art in gamification research underscoring advances in multi-level models, strategic initiatives and digital platforms. The review concludes by highlighting future research directions that advance gamification scholarship and practice.

scholarly journals Motivational Mindsets and Reasons for Studying: Development and Validation of a Classification Tool

2020 ◽  
Vol 11 ◽  
Author(s):  
Job Hudig ◽  
Ad W. A. Scheepers ◽  
Michaéla C. Schippers ◽  
Guus Smeets
Keyword(s):  
University Students ◽  
Social Impact ◽  
Past Research ◽  
Three Dimensions ◽  
Future Research ◽  
First Year ◽  
Study Success ◽  
Student Sample ◽  
Classification Tool ◽  
First Year University

First-year university students have multiple motives for studying and these motives may interact. Yet, past research has primarily focused on a variable-centered, dimensional approach missing out on the possibility to study the joint effect of multiple motives that students may have. Examining the interplay between motives is key to (a) better explain student differences in study success and wellbeing, and (b) to understand different effects that interventions can have in terms of wellbeing and study success. We therefore applied a student-centered, multidimensional approach in which we explored motivational profiles of first-year university students by combining three dimensions of motives for studying (self-transcendent, self-oriented, and extrinsic) which have been shown to be differently related to academic functioning. Using cluster analysis in two independent, consecutive university student cohorts (n = 763 and n = 815), we identified four meaningful profiles and coined them motivational mindsets. We validated the four mindset profiles not only within each student sample but also found almost identical profiles between the student samples. The motivational mindset profiles were labeled: high-impact mindset, low-impact mindset, social-impact mindset, and self-impact mindset. In addition to validating the paradigm, we developed a mindset classification tool to further use these mindsets in practice and in future research.

scholarly journals Novel Dombi Aggregation Operators in Spherical Cubic Fuzzy Information with Applications in Multiple Attribute Decision-Making

2021 ◽  
Vol 2021 ◽  
pp. 1-25
Author(s):  
Tehreem ◽  
Amjad Hussain ◽  
Ahmed Alsanad
Keyword(s):  
Decision Making ◽  
Fuzzy Sets ◽  
Fuzzy Set ◽  
Score Function ◽  
Multiple Attribute Decision Making ◽  
Weighted Averaging ◽  
Fuzzy Information ◽  
Existing Structures ◽  
Multiple Attribute ◽  
Decision Making Processes

The notion of spherical fuzzy sets (SFSs) is one of the most effective ways to model the fuzzy information in decision-making processes. The sum of squares of membership, neutral, and nonmembership degrees in SFSs lies in the interval [0, 1] and accommodates more uncertainties. Henceforth, in this article, the idea of spherical cubic fuzzy sets (SCFSs) is introduced, which is the generalization of SFSs. Spherical cubic fuzzy set is the combination of spherical fuzzy sets and interval-valued spherical fuzzy sets. The membership, neutral, and nonmembership degrees in an SCFS are cubic fuzzy numbers (CFNs). Consequently, this set outperforms the pre-existing structures of fuzzy set theory. Moreover, some fundamental operations for the comparison of two spherical CFNs are defined such as score function and accuracy function. Further, several new operations through Dombi t-norm and Dombi t-conorms are characterized to get the best results during the decision criteria. Furthermore, spherical cubic fuzzy Dombi weighted averaging (SCFDWA), SCFD ordered weighted averaging (SCFDOWA), SCFD hybrid weighted averaging (SCFDHWA), SCFD weighted geometric (SCFDWG), SCFD ordered weighted geometric (SCFDOWG), and the SCFD hybrid weighted geometric (SCFDHWG) aggregated operators are discussed, and their characteristics are examined. In addition, some of the operational laws of these operators are defined. Also, a decision-making approach based on these operators is proposed. Since the proposed methods and operators are the generalizations of the existing methods and operators, therefore, these techniques produce more general, accurate, and precise results as compared with existing ones. Finally, a descriptive example is given in order to describe the validity, practicality, and effectiveness of the proposed methods.

scholarly journals The Role of University Identification on Students' Perceptions and University Branding Activities

2021 ◽  
pp. 1-6
Author(s):  
Nguyen Thu Huong ◽  
Nguyen Thi Thu Huong
Keyword(s):  
Social Exchange ◽  
Social Identity Theory ◽  
Social Exchange Theory ◽  
Descriptive Analysis ◽  
Future Research ◽  
Systematic Review Methodology ◽  
University Branding ◽  
The University ◽  
University Brand

University brand is becoming a topic of interest to most universities worldwide. This paper used the systematic review methodology to examine peer-reviewed journal articles. Practically, the study used a descriptive analysis and material evaluation to assess the different aspects of the university identification, students' perceptions and university branding activities. Base on the social identity theory and social exchange theory, the paper focuses on the role of university identification from students' perceptions in university branding activities. ​This may shed light upon clearer strategic university brand positioning in this highly competitive environment. Finally, apart from focusing the role of university identification, the study not only stimulates future research but provides a reference point for those being lecturers and students who are interested in the topics of university brand.

A Systematic Literature Review of the EFQM Excellence Model from 1991 to 2019

1970 ◽  
Vol 2 (2) ◽  
pp. 11-15
Author(s):  
Muhammad Yousaf ◽  
Petr Bris
Keyword(s):  
Quality Management ◽  
Data Collection ◽  
Literature Review ◽  
Systematic Literature Review ◽  
Quantitative Research ◽  
Web Of Science ◽  
State Of The Art ◽  
Future Research ◽  
European Foundation ◽  
The Subject

A systematic literature review (SLR) from 1991 to 2019 is carried out about EFQM (European Foundation for Quality Management) excellence model in this paper. The aim of the paper is to present state of the art in quantitative research on the EFQM excellence model that will guide future research lines in this field. The articles were searched with the help of six strings and these six strings were executed in three popular databases i.e. Scopus, Web of Science, and Science Direct. Around 584 peer-reviewed articles examined, which are directly linked with the subject of quantitative research on the EFQM excellence model. About 108 papers were chosen finally, then the purpose, data collection, conclusion, contributions, and type of quantitative of the selected papers are discussed and analyzed briefly in this study. Thus, this study identifies the focus areas of the researchers and knowledge gaps in empirical quantitative literature on the EFQM excellence model. This article also presents the lines of future research.

A Review of Minimum Quantity Lubrication (MQL) based on Bibliometry

2020 ◽  
Vol 13 ◽  
Author(s):  
Gaurav Gaurav ◽  
Abhay Sharma ◽  
G S Dangayach ◽  
M L Meena
Keyword(s):  
Descriptive Analysis ◽  
Minimum Quantity Lubrication ◽  
Citation Network ◽  
Machining Process ◽  
Cutting Fluid ◽  
Future Research ◽  
Research Directions ◽  
Minimum Quantity ◽  
Research Areas ◽  
Future Research Directions

Background: Minimum quantity lubrication (MQL) is one of the most promising machining techniques that can yield a reduction in consumption of cutting fluid more than 90 % while ensuring the surface quality and tool life. The significance of the MQL in machining makes it imperative to consolidate and analyse the current direction and status of research in MQL. Objective: This study aims to assess global research publication trends and hot topics in the field of MQL among machining process. The bibliometric and descriptive analysis are the tools that the investigation aims to use for the data analysis of related literature collected from Scopus databases. Methods: Various performance parameters are extracted, such as document types and languages of publication, annual scientific production, total documents, total citations, and citations per article. The top 20 of the most relevant and productive sources, authors, affiliations, countries, word cloud, and word dynamics are assessed. The graphical visualisation of the bibliometric data is presented in terms of bibliographic coupling, citation, and co-citation network. Results: The investigation reveals that the International Journal of Machine Tools and Manufacture (2611 citations, 31 hindex) is the most productive journal that publishes on MQL. The most productive institution is the University of Michigan (32 publications), the most cited country is Germany (1879 citations), and the most productive country in MQL is China (124 publications). The study shows that ‘Cryogenic Machining’, ‘Sustainable Machining’, ‘Sustainability’, ‘Nanofluid’ and ‘Titanium alloy’ are the most recent keywords and indications of the hot topics and future research directions in the MQL field. Conclusion: The analysis finds that MQL is progressing in publications and the emerging with issues that are strongly associated with the research. This study is expected to help the researchers to find the most current research areas through the author’s keywords and future research directions in MQL and thereby expand their research interests.

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