Research Article
Multi-criteria Decision Making Using KEMIRA-Sort Method for Assessing the Suitability of Wild Animals to Promote Sustainable Management of a Wildlife Farm
Issue:
Volume 13, Issue 1, February 2025
Pages:
1-12
Received:
17 December 2024
Accepted:
31 December 2024
Published:
14 January 2025
DOI:
10.11648/j.ajam.20251301.11
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Abstract: In Burkina Faso, most of the wildlife farms hosting touristic visits, which started out with great enthusiasm, are now closed, highlighting the need for sustainable wildlife farm management. Although also of interest for wildlife farming, most of the study dealing with sustainable animal farm management are focus on livestock farming. This study was motivated by the need to provide an answer to the question of sustainable management of wildlife farming in Burkina Faso. To this end, our aim is to assess the suitability of wild animals to promote sustainable management of an ex-situ wildlife farm, hosting touristic visits. The implementation of a Multi-Criteria Decision Making (MCDM) process enabled us, among other things, to identify the wild animals and the criteria against which their suitability to promote sustainable management has been assessed. Our concern, on the one hand, to enable the stakeholders to easily express their preferences and thus fully adhere to the decision-making process, and on the other hand, to respect the heterogeneous dimensions implied by sustainability led us to choose the KEmeny Median Indicator Ranks Accordance-Sort (KEMIRA-Sort) multi-criteria sorting method. The evaluation phase was guided by the consideration of decision-maker’s preferences for ranking criteria and empirical examples of assigning wild animals to ordered categories of suitability to sustainable management. The complete implementation of the decision-making process enabled us to identify the categories of wild animals according to their suitability to promote sustainable management in the case study of the Wédbila wildlife farm (WWF) in Burkina Faso. More specifically, we showed that the group of wild animals most likely to promote WWF sustainable management was made up of pork-spicy, aulacodes, and red-necked ostrich. These results obtained was in line with empirically estimation of the principle stakeholder playing the role of Decision maker. These relevant results obtained thus validate the effectiveness of the KEMIRA-Sort multi-criteria sorting method. In addition, the flexibility of the proposed approach predisposes it, subject to adaptation, to be used in other sustainable management wildlife farm contexts.
Abstract: In Burkina Faso, most of the wildlife farms hosting touristic visits, which started out with great enthusiasm, are now closed, highlighting the need for sustainable wildlife farm management. Although also of interest for wildlife farming, most of the study dealing with sustainable animal farm management are focus on livestock farming. This study wa...
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Research Article
The Symmetry of Solutions for a Class of KIRCHHOFF Equations on the Unit Ball and in the Entire Space
Yubo Ni*
Issue:
Volume 13, Issue 1, February 2025
Pages:
13-29
Received:
18 December 2024
Accepted:
30 December 2024
Published:
14 January 2025
DOI:
10.11648/j.ajam.20251301.12
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Abstract: This paper is mainly concerned with the symmetry and monotonicity of solutions to a fractional parabolic Kirchhoff equation. We first establishes the asymptotic narrow region principle, the asymptotic maximum principle near infinity, the asymptotic strong maximum principle and the Hopf principle for antisymmetric functions in bounded and unbounded domains. By the method of moving plane, it then derives the symmetry of positive solutions on the unit sphere and in the entire space. Next, we point out how to apply these tools and methods to obtain asymptotic radial symmetry and monotonicity of positive solutions in a unit ball and on the whole space. By some researches, we find that no matter how we set the initial value, it will not affect the property of the solution approaching a radially symmetric function as t approaches infinity. Throughout the paper, establishing the maximum principle plays a central role in exploring and studying the fractional parabolic Kirchhoff equation. After establishing different maximum principles, one can study the properties of a solution to the parabolic equation under different conditions. Finally, the novelty of this article is that it is the first time to apply method of moving plane to fractional parabolic Kirchhoff problems and the ideas and methods presented in this article are applicable to studying different non local parabolic problems, various operators and the symmetry of solutions in different regions.
Abstract: This paper is mainly concerned with the symmetry and monotonicity of solutions to a fractional parabolic Kirchhoff equation. We first establishes the asymptotic narrow region principle, the asymptotic maximum principle near infinity, the asymptotic strong maximum principle and the Hopf principle for antisymmetric functions in bounded and unbounded ...
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Research Article
Hydromagnetic Casson Nanofluid Flow Past a Wedge in a Porous Medium in the Presence of Induced Magnetic Field
Nyaga Danson*,
Ochwach Jimrise,
Kirimi Jacob,
Okongo Mark
Issue:
Volume 13, Issue 1, February 2025
Pages:
30-56
Received:
19 September 2024
Accepted:
8 October 2024
Published:
20 January 2025
DOI:
10.11648/j.ajam.20251301.13
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Abstract: Casson fluid is a shear thinning liquid assumed to have an infinite viscosity at zero rate of shear and a zero viscosity at an infinite rate of shear. Casson fluids at times flow past wedge-shaped objects, as is the case in crude oil extraction and geothermal systems. Nanoparticles tend to improve thermal conductivity of base fluids. The impact of Magnetohydromagnetics (MHD) and induced magnetic field on heat and mass transfer flow finds application in engineering and industries. It plays an important role in design of transpiration cooling and aerodynamics extrusion of plastic sheets. Several authors have studied effects of induced magnetic field on different types of fluid flow. However, little has been studied on the impact of induced magnetic field on Casson Nanofluid flow past a wedge. In this study, the equations governing the nanofluid flow were reduced to a system of highly nonlinear ordinary differential equations by using boundary layer theory. The resulting boundary value problem is then numerically solved in MATLAB by using the Boundary Value Problem 4th-order collocation (BVP4C). The local skin friction, mass transfer rate, and heat transfer rate are displayed in a table while graphs illustrate the influences of pertinent physical entities on the temperature, nanofluid velocity, concentration of nanoparticles and magnetic induction. The study’s findings will improve the body of knowledge on Casson Nanofluid flow past a wedge, which is important for plasma, fossil fuels, blood flow in the circulatory system, glass fibre manufacture, petroleum production, and magma dynamics. Due to their low thermal conductivity, electrically conducting Casson fluids have rather poor heat transfer; however, thermal conductivity is improved when nanoparticles are introduced and induced magnetic fields are considered significant. As a result, manufacturers can create solutions using the findings of this study. The issues surrounding induced magnetic fields are significant in several industrial applications, including geothermal systems, liquid metals, fibre or granular insulation, electrolytes, and ionised gases.
Abstract: Casson fluid is a shear thinning liquid assumed to have an infinite viscosity at zero rate of shear and a zero viscosity at an infinite rate of shear. Casson fluids at times flow past wedge-shaped objects, as is the case in crude oil extraction and geothermal systems. Nanoparticles tend to improve thermal conductivity of base fluids. The impact of ...
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