Ronnason Chinram

ORCID: 0000-0002-6113-3689
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Research Areas
  • Fuzzy and Soft Set Theory
  • Multi-Criteria Decision Making
  • Advanced Algebra and Logic
  • Fuzzy Logic and Control Systems
  • semigroups and automata theory
  • Optimization and Mathematical Programming
  • Rough Sets and Fuzzy Logic
  • Rings, Modules, and Algebras
  • Fuzzy Systems and Optimization
  • Nanofluid Flow and Heat Transfer
  • Advanced Topics in Algebra
  • Heat Transfer Mechanisms
  • Fluid Dynamics and Turbulent Flows
  • Analytic and geometric function theory
  • Soil and Land Suitability Analysis
  • Functional Equations Stability Results
  • Geometric and Algebraic Topology
  • Chemical Synthesis and Analysis
  • X-ray Diffraction in Crystallography
  • Polymer Synthesis and Characterization
  • Mathematical Dynamics and Fractals
  • Hydrological Forecasting Using AI
  • Chaos-based Image/Signal Encryption
  • Algebraic structures and combinatorial models
  • Educational Technology and Assessment

Prince of Songkla University
2015-2025

Buriram Rajabhat University
2023

Chiang Mai University
2023

Centre of Excellence in Mathematics
2017-2021

Abdul Wali Khan University Mardan
2021

Mardin Artuklu University
2021

Office of the Higher Education Commission
2018-2020

Chulalongkorn University
2018

This analysis reports an unsteady and incompressible flow of Williamson nanoliquid in presence variable thermal characteristics are persuaded by a permeable stretching cylinder. The field investigation is established with the effect mixed convection non-uniform heat source/sink on transfer. On cylinder surface, inspected utilization zero mass flux constraints. By using appropriate similarity variables, framed equations for energy, momentum converted into non-linear ODEs. numerical...

10.1016/j.aej.2021.04.089 article EN cc-by-nc-nd Alexandria Engineering Journal 2021-06-06

This article introduces the notion of bipolar complex fuzzy soft set as a generalization and set. Furthermore, this contains elementary operations for sets such complement, union, intersection, extended related properties. The OR AND are also initiated in study. Moreover, study decision-making algorithm real-life examples to display success usability sets. Finally, comparative notions with some prevailing ideas interpreted

10.3390/math10071048 article EN cc-by Mathematics 2022-03-24

The linear Diophantine fuzzy set (LDFS) has been proved to be an efficient tool in expressing decision maker (DM) evaluation values multicriteria decision-making (MCDM) procedure. To more effectively represent DMs’ information complicated MCDM process, this paper proposes a method based on proposed novel aggregation operators (AOs) under (LDFS). A <math xmlns="http://www.w3.org/1998/Math/MathML" id="M1"> <mi>q</mi> </math> -Rung orthopair ( id="M2"> -ROFS), Pythagorean (PFS), and...

10.1155/2021/5548033 article EN cc-by Journal of Mathematics 2021-07-17

The surprising features of carbon nanotubes such as featherweight, mechanical permanence, outstanding electrical and thermal conductivities, physicochemical aptness make them impeccable material for electrochemical contraptions. Having astounding physiognomies in mind our purpose this study is to a comparison the performance Yamada-Ota Xue models nanofluid flow amidst two rotating disks spongy medium. majority available literature considered constant conductivity viscosity. Nevertheless,...

10.1016/j.csite.2021.101039 article EN cc-by Case Studies in Thermal Engineering 2021-05-07

The primitive notions of rough sets and intuitionistic fuzzy set (IFS) are general mathematical tools having the ability to handle uncertain imprecise knowledge easily. EDAS (Evaluation based on distance from average solution) method has a significant role in decision making problems, especially when more conflicting criteria exist multicriteria group (MCGDM) problems. aim this manuscript is present roughEDAS (IFREDAS) IF averaging geometric aggregation operators. In addition, we put forward...

10.1109/access.2021.3049605 article EN cc-by IEEE Access 2021-01-01

Binary relations are most important in various fields of pure and applied sciences. The concept linear Diophantine fuzzy sets (LDFSs) proposed by Riaz Hashmi is a novel mathematical approach to model vagueness uncertainty decision-making problems. In LDFS theory, the use reference or control parameters corresponding membership non-membership grades makes it accommodating towards modeling uncertainties real-life main purpose this paper establish robust fusion binary LDFSs, introduce relation...

10.3390/sym13060945 article EN Symmetry 2021-05-26

When dealing with the haziness that is intrinsic in decision analysis-driven making procedures, interval-valued intuitionistic fuzzy sets (IVIFSs) can be quite effective. Our approach to solving multiple attribute (MADM) difficulties, where all of evidence provided by decision-makers demonstrated as (IVIF) matrices, which components are distinguished an IVIF number (IVIFN), based on Aczel–Alsina operational processes. We begin introducing novel IVIFN operations including sum, product, scalar...

10.3390/axioms11060258 article EN cc-by Axioms 2022-05-29

The Pythagorean probabilistic hesitant fuzzy set (PyPHFS) is an effective, generalized and powerful tool for expressing information. It can cover more complex evaluation Therefore, based on the advantages of PyPHFSs, this paper presents a new extended TOPSIS method dealing with uncertainty in form PyPHFS real life problems. divided into three main parts. Firstly, novel entropy measure established using distance under information to find out unknown weights attributes. second part consists...

10.3390/e22030318 article EN cc-by Entropy 2020-03-11

In a conventional interpretation of decision-making based on ambiguity, decision-maker must prefer the best possible opportunity including various feasible possibilities. However, dilemma picking alternative has continued to be substantial task resolve. this manuscript, we improve existing complex intuitionistic fuzzy soft set (CIFSS), which includes grade truth and falsity with rule that sum real imaginary parts both grades is confined [0, 1]. CIFS valuable procedure determine authenticity...

10.3390/math9161922 article EN cc-by Mathematics 2021-08-12

Intuitionistic hesitant fuzzy set (IHFS) is a mixture of two separated notions called intuitionistic (IFS) and (HFS), as an important technique to cope with uncertain awkward information in realistic decision issues. IHFS contains the grades truth falsity form subset unit interval. The notion was defined by many scholars different conditions, which contain several weaknesses. Here, keeping view problems already IHFSs, we will define another way so that it becomes compatible other existing...

10.32604/cmes.2021.014393 article EN Computer Modeling in Engineering & Sciences 2021-01-01

This paper aims to introduce the novel concept of bipolar picture fuzzy set (BPFS) as a hybrid structure (BFS) and (PFS). BPFS is new kind sets deal with bipolarity (both positive negative aspects) each membership degree (belonging-ness), neutral (not decided), non-membership (refusal). In this article, some basic properties (BPFSs) their fundamental operations are introduced. The score function, accuracy function certainty suggested discuss comparability numbers (BPFNs). Additionally,...

10.32604/cmes.2021.014174 article EN Computer Modeling in Engineering & Sciences 2021-01-01

Abstract Studies accentuating nanomaterials suspensions and flow traits in the view of their applications are focus present study. Especially, usage such materials biomedical rheological models has achieved great importance. The nanofluids’ role is essential cooling small electronic gizmos like microchips akin devices. Having exciting practical nanofluids our goal to scrutinize Maxwell MHD nanofluid over an extended cylinder with nonlinear thermal radiation amalgamated chemical reaction a...

10.1038/s41598-021-88947-5 article EN cc-by Scientific Reports 2021-04-30

The idea of bipolar complex fuzzy (BCF) sets, as a genuine modification both sets and gives massive valuable framework for representing evaluating ambiguous information. In intelligence decision making based on BCF it is critical dilemma to compare or rank positive negative membership grades. this framework, we deliberated various techniques aggregating the collection information into singleton set, called weighted arithmetic averaging (BCFWAA), ordered (BCFOWAA), geometric (BCFWGA),...

10.3390/math10101726 article EN cc-by Mathematics 2022-05-18

To handle complex, risk-illustrating, and asymmetric information, the theory discussed in this analysis is much more suitable for evaluating above dilemmas. manage ambiguity inconsistency real-life problems, principle of Aczel–Alsina (AA) t-norm t-conorm was initiated 1980. These norms are massively modified different from prevailing due to parameter p, where 0&lt;p&lt;+∞. The major contribution analyze AA operational laws (addition, multiplication, score value, accuracy value) under complex...

10.3390/sym14112255 article EN Symmetry 2022-10-27

The assessment of the Darcy–Forchheimer flow magnetohydrodynamic Williamson nanofluid with entropy optimization is main purpose this article. This study was carried out to analyze impacts on fluid via a stratified plate. viscous dissipation, chemical reaction, and Joule heating are examined in existence nonlinear thermal radiation. framework partial differential expressions transformed into ordinary equations by utilizing suitable set similarity transformations. obtained analytically tackled...

10.1177/09544089211027989 article EN Proceedings of the Institution of Mechanical Engineers Part E Journal of Process Mechanical Engineering 2021-06-25

The pioneer paradigm of soft set (SfiS) was investigated by Molodtsov in 1999 affixing parameterization tools ordinary sets. SfiS theory is free from inherit complexity and a nice mathematical tool for handle uncertainties vagueness. aim this paper to initiate the combine study q-rung orthopair fuzzy (q-ROFS) get new notion called (qROFSfiS). q-ROFSfiS those complexities which suffering contemporary theories because most significant character q-ROFSfiS. In manuscript our main contribution...

10.1109/access.2021.3059683 article EN cc-by IEEE Access 2021-01-01

The current research explores an unsteady three-dimensional Maxwell nanofluid flow with variable viscosity and thermal conductivity through a stretching surface. influence of Joule heating, heat generation/absorption, chemical reaction are also incorporated in investigation. By the utilization suitable transformation, model is transformed into coupled ordinary differential equations. numerical solution ODEs adopted by usage Bvp4c built-in code MATLAB software. graphical findings manipulated...

10.1016/j.csite.2021.101169 article EN cc-by Case Studies in Thermal Engineering 2021-06-18

Managing ambiguous and asymmetric types of information is a very challenging task under the consideration classical data. Furthermore, Aczel-Alsina aggregation operators are new developments in fuzzy sets theory. However, when decision-makers need to use these structures rough structures, fail deal with such values, as lower upper approximation spaces. Thus, an encasement intuitionistic set has chance data loss, whereas can resolve problem loss. Motivated by notion i.e., operators, this...

10.3390/sym14122537 article EN Symmetry 2022-11-30

In this article, we extend the concept of covered (m, n)-ideals by defining ordered semigroups, where m, n are nonnegative integers. The results obtained generalize those one-sided ideals and bi-ideals. We additionally investigate conditions under which, in an n)-regular semigroup S, every n)-ideal I S is also a S.

10.56947/gjom.v19i1.2537 article EN other-oa Gulf Journal of Mathematics 2025-01-15

In this paper, we apply neutrosophic N-structures in ternary semirings. We consider N-subsemirings of investigate the conditions for to be N-subsemirings. addition, show relation between subsemirins and N-subsemirins. Finally, showed that homomorphic preimage is a onto image N-subsemiring also

10.54216/ijns.260209 article EN International Journal of Neutrosophic Science 2025-01-01

<abstract> Spherical fuzzy soft sets $\left(SF{{S}_{ft}}Ss \right)$ have its importance in a situation where human opinion is not only restricted to yes or no but some kind of abstinence refusal aspects are also involved. Moreover, the notion $SF{{S}_{ft}}S$ free from all that complexities which suffers contemporary theories because parameterization toll more important character $SF{{S}_{ft}}S$. Also, note aggregation operators very effective apparatus convert overall information into single...

10.3934/math.2021454 article EN cc-by AIMS Mathematics 2021-01-01

This continuation presents the applications of on-uniform heat source/sink and viscous dissipation in megnetohydrodynaimcs (MHD) flow Casson nanoparticles toward a porous stretchable sheet. The model is presented terms governing expressions for which non-dimensional transmuted set retained by utilizing relevant similarities modification. These equations are numerically resolved famous shooting technique. influence numerous parameters such as parameter, elastic porosity Prandtl number,...

10.1016/j.asej.2021.05.010 article EN cc-by Ain Shams Engineering Journal 2021-05-28
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