Search results for "Integra"
showing 10 items of 5314 documents
MANAGING INETEGRATED SYSTEMS OF INFORMATION STREAMS WITHIN AGRARIAN ENTERPRISES
2016
Managing integrated systems of information streams within agrarian enterprises / Kalinichenko А. etc. Zeszyty Naukowe Politechniki Czestochowskiej, Zarządzanie. 2016. Nr 21. P. 150–158
Latvijas krievvalodīgo un latviski runājošo jauniešu akulturācijas stratēģijas.
2015
Jebkura sabiedrība kurā dzīvo vairāk nekā vienas etniskās kultūras pārstāvji noris akulturācijas procesi. Arī Latvijas valsts ar savām divām lielajām lingvistiskajām grupām krievvalodīgajiem un latviešiem nav izņēmums. Autors ir dziļāk izpētījis Džona Berija (Berry, 1997)divvirzienu vairākdimensiju akulturācijas modeli. Autora darba mērķis bija noskaidrot latviešu un krievvalodīgo akulturācijas attieksmes, kā arī uztvertās ārgrupas attieksmes un pārbaudīt to savstarpējās attiecības. Darbā tika aptaujāti 113 jaunieši no kuriem 54 bija krievvalodīgie. Respondentiem bija jāizpilda no Brauna un Zagefkas (Zagefka & Brown, 2002) pētījuma tulkota un adaptēta aptauja, kas mērīja gan akulturācijas a…
THE CAUSAL ROOTS OF INTEGRATION AND THE UNITY OF CONSCIOUSNESS
2016
A fundamental feature of consciousness is unity. The problem is whether unity is compatible both with the physical underpinnings of conscious experience and with the fabric of the physical world in general.
On stability issues for IMEX schemes applied to 1D scalar hyperbolic equations with stiff reaction terms
2011
The application of a Method of Lines to a hyperbolic PDE with source terms gives rise to a system of ODEs containing terms that may have very different stiffness properties. In this case, Implicit-Explicit Runge-Kutta (IMEX-RK) schemes are particularly useful as high order time integrators because they allow an explicit handling of the convective terms, which can be discretized using the highly developed shock capturing technology, together with an implicit treatment of the source terms, necessary for stability reasons. Motivated by the structure of the source term in a model problem introduced by LeVeque and Yee in [J. Comput. Phys. 86 (1990)], in this paper we study the preservation of ce…
Rationalizability of square roots
2021
Abstract Feynman integral computations in theoretical high energy particle physics frequently involve square roots in the kinematic variables. Physicists often want to solve Feynman integrals in terms of multiple polylogarithms. One way to obtain a solution in terms of these functions is to rationalize all occurring square roots by a suitable variable change. In this paper, we give a rigorous definition of rationalizability for square roots of ratios of polynomials. We show that the problem of deciding whether a single square root is rationalizable can be reformulated in geometrical terms. Using this approach, we give easy criteria to decide rationalizability in most cases of square roots i…
Regularity of the solution to a class of weakly singular fredholm integral equations of the second kind
1979
Continuity and differentiability properties of the solution to a class of Fredholm integral equations of the second kind with weakly singular kernel are derived. The equations studied in this paper arise from e.g. potential problems or problems of radiative equilibrium. Under reasonable assumptions it is proved that the solution possesses continuous derivatives in the interior of the interval of integration but may have mild singularities at the end-points.
Multiplicity results for a class of asymmetric weakly coupled systems of second order ordinary differential equations
2005
We prove the existence and multiplicity of solutions to a two-point boundary value problem associated to a weakly coupled system of asymmetric second-order equations. Applying a classical change of variables, we transform the initial problem into an equivalent problem whose solutions can be characterized by their nodal properties. The proof is developed in the framework of the shooting methods and it is based on some estimates on the rotation numbers associated to each component of the solutions to the equivalent system.
A rigidity theorem for Lagrangian deformations
2005
We consider deformations of singular Lagrangian varieties in symplectic manifolds. We prove that a Lagrangian deformation of a Lagrangian complete intersection is analytically rigid provided that this is the case infinitesimally. This result is given as a consequence of the coherence of the direct image sheaves of relative infinitesimal Lagrangian deformations.
A Survey on Nature-Inspired Medical Image Analysis: A Step Further in Biomedical Data Integration
2019
Natural phenomena and mechanisms have always intrigued humans, inspiring the design of effective solutions for real-world problems. Indeed, fascinating processes occur in nature, giving rise to an ever-increasing scientific interest. In everyday life, the amount of heterogeneous biomedical data is increasing more and more thanks to the advances in image acquisition modalities and high-throughput technologies. The automated analysis of these large-scale datasets creates new compelling challenges for data-driven and model-based computational methods. The application of intelligent algorithms, which mimic natural phenomena, is emerging as an effective paradigm for tackling complex problems, by…
Indefinite integrals of special functions from integrating factors
2019
Some general integrals are presented which were obtained from two integrating factors f(x) and fˆ(x) for the first two and last two terms, respectively, of the second-order linear ordinary differen...