Search results for "solu"
showing 10 items of 7577 documents
A Sub-Supersolution Approach for Robin Boundary Value Problems with Full Gradient Dependence
2020
The paper investigates a nonlinear elliptic problem with a Robin boundary condition, which exhibits a convection term with full dependence on the solution and its gradient. A sub- supersolution approach is developed for this type of problems. The main result establishes the existence of a solution enclosed in the ordered interval formed by a sub-supersolution. The result is applied to find positive solutions.
Regular solutions for nonlinear elliptic equations, with convective terms, in Orlicz spaces
2022
We establish some existence and regularity results to the Dirichlet problem, for a class of quasilinear elliptic equations involving a partial differential operator, depending on the gradient of the solution. Our results are formulated in the Orlicz-Sobolev spaces and under general growth conditions on the convection term. The sub- and supersolutions method is a key tool in the proof of the existence results.
On the Sub-Supersolution Approach for Dirichlet Problems driven by a (p(x), q(x))-Laplacian Operator with Convection Term
2021
The method of sub and super-solution is applied to obtain existence and location of solutions to a quasilinear elliptic problem with variable exponent and Dirichlet boundary conditions involving a nonlinear term f depending on solution and on its gradient. Under a suitable growth condition on the convection term f, the existence of at least one solution satisfying a priori estimate is obtained.
Reverse Catmull-Clark Subdivision
2006
Reverse subdivision consists in constructing a coarse mesh of a model from a finer mesh of this same model. In this paper, we give formulas for reverse Catmull-Clark subdivision. These formulas allow the constructing of a coarse mesh for almost all meshes. The condition for being able to apply these formulas is that the mesh to be reversed must be generated by the subdivision of a coarse mesh. Except for this condition, the mesh can be arbitrary. Vertices can be regular or extraordinary and the mesh itself can be arbitrary (triangular, quadrilateral…).
El trabajo del espíritu. Hegel y la Modernidad [Prefaci]
2001
Los ensayos que se reúnen en este libro abordan diferentes aspectos del idealismo de Hegel, con el propósito de presentar su proyecto filosófico como un cierre de algunos problemas metafísicos y epistemológicos recibidos de la tradición filosófica de la Modernidad, entre los cuales se incluyen: la constitución del saber experiencial como síntesis dialéctica de certeza y verdad, la superación de la oposición sujeto-objeto planteada por las filosofías de la conciencia, la conceptualización de la totalidad absoluta como sujeto, la unificación de razón y realidad más allá de los enfoques criticistas, y la síntesis de causalidad y teleología en la concepción especulativa de la naturaleza.
Location of solutions for quasi-linear elliptic equations with general gradient dependence
2017
Existence and location of solutions to a Dirichlet problem driven by $(p,q)$-Laplacian and containing a (convection) term fully depending on the solution and its gradient are established through the method of subsolution-supersolution. Here we substantially improve the growth condition used in preceding works. The abstract theorem is applied to get a new result for existence of positive solutions with a priori estimates.
Cosolutes affect structure and dynamics of myoglobin-trehalose amorphous systems: a FTIR and MD study
2013
Biologinen sukupuoli
2020
Biologinen sukupuoli on luonnostaan monitahoinen ilmiö. Epämääräinen kielenkäyttö tekee siitä kuitenkin tarpeettoman hämärän. Epämääräisyys voi sataa tiedevastaisten laariin ja syödä osaltaan tieteen arvostusta kansan keskuudessa. Sukupuoli on suvullisen lisääntymisen ja siten myös biologian perusyksikkö. Viime vuosina sukupuolen käsite on yhteiskunnallistunut keskusteluissa sukupuolivähemmistöjen oikeuksista. Keskustelu paljasti, että sukupuoli tarvitsee yleistajuista biologista jäsennystä. nonPeerReviewed
Structural Motifs of Alkali Metal Superbases in Non‐coordinating Solvents
2020
Abstract Lochmann–Schlosser superbases (LSB) are a standard reagent in synthetic chemistry to achieve an exchange of a proton on an organic framework with an alkali metal cation, which in turn can be replaced by a wide range of electrophilic groups. In standard examples, the deprotonating reagent consists of an equimolar mixture of n‐butyllithium and potassium t‐butoxide. However, the nature of the reactive species could not be pinned down either for this composition or for similar mixtures with comparable high reactivity. Despite the poor solubility and the fierce reactivity, some insights into this mixture were achieved by some indirect results, comparison with chemically related systems,…
Virtualization of work in global supply chains
2016
ABSTRACT. Background: The paper is devoted to the notion and benefits of implementing virtual work in global supply chains. Virtual work must be understood as an intentional activity of a human being, aimed at rendering services (tangible and intangible), by means of ITC tools, performed in a distance from the traditional place of work, in a mobile manner. The empirical research were conducted on the basis of 4 case studies of global leaders of supply chains, which in accordance with M. Fisher's classification, represent two types. The case studies confirmed the positive influence of virtual work both in effective and flexible supply chains. Favourable market and technological conditions an…