The Issue of Food Security in Cuba by José Alvarez

“… Since the establishment of the food rationing system in 1962, the issue of food security has been an important one in Cuban life. …”
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The Kronecker Summation Method for Robust Stabilization Applied to a Chemical Reactor by Radek Matušů, Jana Závacká, Roman Prokop, Monika Bakošová

“…The paper focuses on robust stabilization where the suitable parameters of a simple continuous-time PI controller are determined through a combination of the Kronecker summation method, sixteen plant theorem, and an algebraic approach to control design in the ring of proper and stable rational functions. The initial theoretical background is followed by an illustrative experiment which includes computation of the controller and verification of control results for a continuous stirred tank reactor with exothermic reaction modelled as a fourth-order interval system.…”
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Dynamics and Solutions of a Fifth-Order Nonlinear Difference Equation by M. M. El-Dessoky, E. M. Elabbasy, Asim Asiri

“…The main objective of this paper is to study the behavior of the rational difference equation of the fifth-order yn+1=αyn+βynyn-3/(Ayn-4+Byn-3), n=0,1,…, where α,β,A, and B are real numbers and the initial conditions y-4,y-3,y-2,y-1 and y0 are positive real numbers such that Ay-4+By-3≠0. …”
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The Issue of Food Security in Cuba by José Alvarez

“… Since the establishment of the food rationing system in 1962, the issue of food security has been an important one in Cuban life. …”
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Photographie de maquette et collage chez Louis-Auguste Boileau : une préfiguration du photomontage architectural dans la seconde moitié du XIXe siècle ? by Laurent Koetz

“…Studying the images produced for the diffusion of Louis-Auguste Boileau's designs sheds light on new methods of image production, both from the point of view of reality perception and process rationalization.…”
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On the Global Asymptotic Stability and 4-Period Oscillation of the Third-Order Difference Equation by M. E. Erdogan

“…The main objective of this paper is to study the global behavior and oscillation of the following third-order rational difference equation xn+1=αxnxn−1xn−2/βxn−12+γxn−22, where the initial conditions x−2,x−1,x0 are nonzero real numbers and α,β,γ are positive constants such that α≤β+γ. …”
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ECOLOGICAL DOMINANT IN POSTMODEMIST CULTURE by Česlovas Kalenda

“… Modernism is characterised by theory and practise of a man's technocratic domination over nature based on the principles of scientific rationalism and utilitarianism. One of essential features of postmodernistic culture is formation of a new relationship with natural reality. …”
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María Zambrano, la révélation de la naissance by Jean Marc Sourdillon

“…It appears often as a vision, it doesn’t accept rationalization, and it can only be translated only into a poetic language. …”
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On Pexider Differences in Topological Vector Spaces by Abbas Najati, M. R. Abdollahpour, Gwang Hui Kim

“…Let 𝑋 be a normed space and 𝑌 a sequentially complete Hausdorff topological vector space over the field ℚ of rational numbers. Let 𝐷1={(𝑥,𝑦)∈𝑋×𝑋∶‖𝑥‖+‖𝑦‖≥𝑑}, and 𝐷2={(𝑥,𝑦)∈𝑋×𝑋∶‖𝑥‖+‖𝑦‖<𝑑} where 𝑑>0. …”
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ECOLOGICALLY ORIENTED MATHEMATICAL MODELS OF RISK MANAGEMENT AND SAFETY by I. Gvozdkova

“…Recommendations on the implementation and development of eco-friendly models in the interests of rational nature management, resource saving, human security and natural-anthropogenic complexes are formulated.…”
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Multistep High-Order Methods for Nonlinear Equations Using Padé-Like Approximants by Alicia Cordero, José L. Hueso, Eulalia Martínez, Juan R. Torregrosa

“…We compose optimal methods of order 4 with Newton’s step and substitute the derivative by using an appropriate rational approximant, getting optimal methods of order 8. …”
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On linear algebraic semigroups III by Mohan S. Putcha

“…It is also shown that the lattice (E(T),≤) is isomorphic to the lattice of faces of a rational polytope in some ℝn. Using these results, it is shown that if S is any connected semigroup with lattice of regular J-classes U(S), then all maximal chains in U(S) have the same length.…”
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Integral Equations Approach in Complex-Valued Generalized b-Metric Spaces by Shahid Mehmood, Saif Ur Rehman, Ihsan Ullah, Rashad A. R. Bantan, Mohammed Elgarhy

“…In this paper, we study a rational type common fixed-point theorem (CFP theorem) in complex-valued generalized b-metric spaces (Gb-metric spaces) by using three self-mappings under the generalized contraction conditions. …”
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THE MATHEMATIZATION OF COGNITIVE CONTENT AND THE IDEA OF UNIVERSAL LANGUAGE by Nijolė Aukštuolytė

“…Descartes the idea of universal mathematics which deals with the common form of rational cognition, the latter being generalized into the idea of universal scientific language. …”
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Wisdom of the Established Pattern by Joel Janhonen

“…Most of our choices we do not base on precise rational modeling but on a far more ancient response mechanism. …”
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Bicyclic peptide-enhanced covalent inhibitor of SARS-CoV-2 3CL protease by Qian Wang, Yanhui Wang, Jian Li, Hong Liu, Shiyu Chen

“…Enhance the potency of the discovered bicyclic peptides for potential development into anti-SARS-CoV-2 drugs. Methods: Rational design was employed to discover the initial bicyclic peptide—warhead conjugates. …”
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To a critique of space in architectural discourse by Петр Капустин

“…The roots of these questions are in new European rational thinking, but today we are reaping the fruits. …”
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Exact Solutions of the Time Fractional BBM-Burger Equation by Novel (G′/G)-Expansion Method by Muhammad Shakeel, Qazi Mahmood Ul-Hassan, Jamshad Ahmad, Tauseef Naqvi

“…This equation can be converted into an ordinary differential equation by using a persistent fractional complex transform and, as a result, hyperbolic function solutions, trigonometric function solutions, and rational solutions are attained. The performance of the method is reliable, useful, and gives newer general exact solutions with more free parameters than the existing methods. …”
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Special Kähler geometry and holomorphic Lagrangian fibrations by Li, Yang, Tosatti, Valentino

“…Given a holomorphic Lagrangian fibration of a compact hyperkähler manifold, we use the differential geometry of the special Kähler metric that exists on the base away from the discriminant locus, and show that the pullback of the tangent bundle of the base to the total space of a family of minimal rational curves admits a parallel splitting. The splitting is nontrivial when the base is not half-dimensional projective space. …”
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The Neural-Fuzzy Approach as a Way of Preventing a Maritime Vessel Accident in a Heavy Traffic Zone by Nelly A. Sedova, Viktor A. Sedov, Ruslan I. Bazhenov

“…The authors prove that it is rational to use a neural-fuzzy system, where generation is carried out by the lattice method without clustering. …”
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