Exploration of dilatant nanofluid effects conveying microorganism utilizing scaling group analysis: FDM Blottner

2020 ◽  
Vol 549 ◽  
pp. 124040 ◽  
Author(s):  
Kohilavani Naganthran ◽  
Md Faisal Md Basir ◽  
Mohd Shareduwan Mohd Kasihmuddin ◽  
Sameh E. Ahmed ◽  
Falodun Bidemi Olumide ◽  
...  
Keyword(s):  
Group Analysis ◽  
Scaling Group

Scaling group analysis of bioconvective micropolar fluid flow and heat transfer in a porous medium

2020 ◽  
Author(s):  
Kohilavani Naganthran ◽  
Md Faisal Md Basir ◽  
Thirupathi Thumma ◽  
Ebenezer Olubunmi Ige ◽  
Roslinda Nazar ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Porous Medium ◽  
Fluid Flow ◽  
Micropolar Fluid ◽  
Group Analysis ◽  
Flow And Heat Transfer ◽  
Micropolar Fluid Flow ◽  
Scaling Group

scholarly journals Radiative MHD Sutterby Nanofluid Flow Past a Moving Sheet: Scaling Group Analysis

Mathematics ◽  
2020 ◽  
Vol 8 (9) ◽  
pp. 1430
Author(s):  
Mohammed M. Fayyadh ◽  
Kohilavani Naganthran ◽  
Md Faisal Md Basir ◽  
Ishak Hashim ◽  
Rozaini Roslan
Keyword(s):  
Heat Transfer ◽  
Thermal Radiation ◽  
Numerical Solutions ◽  
Transfer Problem ◽  
Group Analysis ◽  
Shrinking Sheet ◽  
Nanofluid Flow ◽  
Stagnation Region ◽  
Flow And Heat Transfer ◽  
Scaling Group

The present theoretical work endeavors to solve the Sutterby nanofluid flow and heat transfer problem over a permeable moving sheet, together with the presence of thermal radiation and magnetohydrodynamics (MHD). The fluid flow and heat transfer features near the stagnation region are considered. A new form of similarity transformations is introduced through scaling group analysis to simplify the governing boundary layer equations, which then eases the computational process in the MATLAB bvp4c function. The variation in the values of the governing parameters yields two different numerical solutions. One of the solutions is stable and physically reliable, while the other solution is unstable and is associated with flow separation. An increased effect of the thermal radiation improves the rate of convective heat transfer past the permeable shrinking sheet.

scholarly journals Scaling Group Analysis of Mixed Bioconvective Flow in Nanofluid with Presence of Slips, MHD and Chemical Reactions

2018 ◽  
Author(s):  
Mohd Faisal Mohd Basir ◽  
M. Jashim Uddin ◽  
Ahmad Izani Md. Ismail
Keyword(s):  
Differential Equations ◽  
Group Analysis ◽  
Mhd Flow ◽  
First Order ◽  
Order Chemical Reaction ◽  
Potential Applications ◽  
First Order Chemical Reaction ◽  
Source Sink ◽  
Bioconvective Flow ◽  
Scaling Group

Bioconvective flows have attracted attention in recent years due to actual and potential applications. In this paper, we consider a steady and laminar convective MHD flow of a nanofluid with heat, mass and microorganism transfer with a heat source/sink present. In addition, we assume there exists a first order chemical reaction. The governing partial differential equations (PDEs) are reduced to ordinary differential equations (ODEs) using the scaling group transformation and the associated boundary value problem is then solved. The influences of selected governing parameters on the dimensionless velocity, temperature, nanoparticle concentration, density of motile microorganisms, skin friction, heat transfer, mass transfer, and motile microorganism density rates are computed and discussed

Validating the Resource-Management Inventory (ReMI)

2020 ◽  
Vol 36 (5) ◽  
pp. 777-786 ◽  
Author(s):  
Julia Waldeyer ◽  
Jens Fleischer ◽  
Joachim Wirth ◽  
Detlev Leutner
Keyword(s):  
Higher Education ◽  
Academic Achievement ◽  
Resource Management ◽  
Measurement Invariance ◽  
Factor Structure ◽  
Management Strategies ◽  
Group Analysis ◽  
Management Skills ◽  
First Year Students ◽  
Management Competency

Abstract. There is substantial evidence that students in higher education who have sophisticated resource-management skills are more successful in their studies. Nevertheless, research shows that students are often not adequately prepared to use resource-management strategies effectively. It is thus crucial to screen and identify students who are at risk of poor resource management (and consequently, reduced academic achievement) to provide them with appropriate support. For this purpose, we extend the validation of a situational-judgment-based instrument called Resource-Management Inventory (ReMI), which assesses resource-management competency (including knowledge of resource-management strategies and the self-reported ability to use this knowledge in learning situations). We evaluated the ReMI regarding factor structure, measurement invariance, and its impact on academic achievement in different study domains in a sample of German first-year students ( N = 380). The results confirm the five-factor structure that has been found in a previous study and indicate strong measurement invariance. Furthermore, taking cognitive covariates into account, the results confirm that the ReMI can predict students’ grades incrementally. Finally, a multi-group analysis shows that the findings can be generalized across different study domains. Overall, we provide evidence for a valid and efficient instrument for the assessment of resource-management competency in higher education.

Multi-Level and Multi-Group Analysis to Evaluate Effectiveness of CPGI

2012 ◽  
Vol 31 (1) ◽  
pp. 217-251
Author(s):  
Soonmook Lee ◽  
Sun Jung Kwon ◽  
Sung Chil Yeo ◽  
이경희 ◽  
이현정 ◽  
...  
Keyword(s):  
Group Analysis ◽  
Multi Level
Sign in / Sign up

Export Citation Format

Share Document