Search results for " Function"
showing 5 items of 9395 documents
Zarządzanie funkcją środowiskową w rolnictwie - źródło nowych rent gospodarstw rolnych
2016
W Unii Europejskiej ekologizacja rolnictwa stanowi wstępny etap takiej jego transformacji, która umożliwi gospodarstwom rolnym, rozmieszczonym w różnych miejscach przestrzeni europejskiej, trwały udział w kreowaniu zielonego wzrostu. Praca jest próbą odpowiedzi na pytanie: Czy dzięki doskonaleniu zarządzania funkcją środowiskową towarowe gospodarstwa rolne regionu opolskiego mogą przygotować się do wyzwań związanych z gospodarką sieciową i zadań obecnego etapu ich modernizacji? W opracowaniu przedstawiono rolę polityki ekologicznej w definiowaniu obecnego etapu modernizacji gospodarstw rolnych, mechanizmy jej integracji z celami WPR do 2020 r. oraz strategią Europa 2020. Ustalenia te stanow…
Performances linguistiques des enseignants et qualité d'apprentissage des élèves au primaire
2011
In a broad sense Education for All (EFA) is a hazardous Issue for to the least developed countries, and yet it adds, almost always, for these countries to provide additional difficulty for initial learning periods when majority in pupils has to assume the route from the local language to the teaching one. Besides, adapting in this context the provision of education has often done under the financial constraint. The hiring for supplementary teachers, as to reach EFA goal, less paid in comparison to their older colleagues. So now the teacher staff is consequently represented by new teachers with fewer initial education and pedagogical training, but definitely closer to the communities. The re…
Conformational investigation of alpha,beta-dehydropeptides. IX. N-Acetyl-(E)-alpha,beta-methylamide: stereoelectronic properties from infrared and th…
1998
The Fourier transform infrared spectra of Ac-(E)-deltaAbu-NHMe were analyzed to determine the predominant solution conformation(s) of this (E)-alpha,beta-dehydropeptide-related compound and the electron density perturbation in its amide groups. The measurements were performed in dichloromethane and acetonitrile in the region of mode vs (N-H), amide I, amide II and vs (C(alpha)=Cbeta). The equilibrium geometrical parameters, calculated by a method based on the density functional theory with the B3LYP functional and the 6-31G* basis set, were used to support spectroscopic interpretation and gain some deeper insight into the molecule. The experimental and theoretical data were compared with th…
Uniform rectifiability and ε-approximability of harmonic functions in Lp
2020
Suppose that E⊂Rn+1 is a uniformly rectifiable set of codimension 1. We show that every harmonic function is ε-approximable in Lp(Ω) for every p∈(1,∞), where Ω:=Rn+1∖E. Together with results of many authors this shows that pointwise, L∞ and Lp type ε-approximability properties of harmonic functions are all equivalent and they characterize uniform rectifiability for codimension 1 Ahlfors–David regular sets. Our results and techniques are generalizations of recent works of T. Hytönen and A. Rosén and the first author, J. M. Martell and S. Mayboroda. peerReviewed
On the Amount of Nonconstructivity in Learning Recursive Functions
2011
Nonconstructive proofs are a powerful mechanism in mathematics. Furthermore, nonconstructive computations by various types of machines and automata have been considered by e.g., Karp and Lipton [17] and Freivalds [11]. They allow to regard more complicated algorithms from the viewpoint of much more primitive computational devices. The amount of nonconstructivity is a quantitative characterization of the distance between types of computational devices with respect to solving a specific problem. In the present paper, the amount of nonconstructivity in learning of recursive functions is studied. Different learning types are compared with respect to the amount of nonconstructivity needed to lea…