The article analyzes the production and sale of grain in agricultural enterprises Kursk region. Changes size structure crops are revealed, dynamics sales main types for 2011-2019 analyzed both physical weight value terms. It was found that during study period, region have a generally positive trend. valuation products demonstrates steady growth due to rise prices products. presents trend models...

this article is devoted to the study of existence and multiplicity of positive solutions to aclass of nonlinear fractional order multi-point boundary value problems of the type−dq0+u(t) = f(t, u(t)), 1 < q ≤ 2, 0 < t < 1,u(0) = 0, u(1) =m−2∑ i=1δiu(ηi),where dq0+ represents standard riemann-liouville fractional derivative, δi, ηi ∈ (0, 1) withm−2∑i=1δiηi q−1 < 1, and f : [0, 1] × [0, ∞) → [0, ∞...

Based on the work of Hahn, Baer, Ostrowski, Krull, Kaplansky and the Artin-Schreier theory, and stimulated by the paper [L] of S. Lang in 1953, the theory of real places and convex valuations has witnessed a remarkable development and has become a basic tool in the theory of ordered fields and real algebraic geometry. Surveys on this development can be found in [LAM] and [PC]. In this paper, we...

There is increasing research interest in the application of ecosystem services (ES) concept environmental risk assessment chemicals to support formulating and operationalising regulatory protection goals making more policy- value-relevant. This requires connecting structure processes function henceforth provision goods their economic valuation. Ecological production functions (EPFs) may help qu...

This article proposes a new formula for the valuation of American options by using a weak variational form for the corresponding free boundary value problem derived by Merton. It is shown that the weak form has a unique solution, and the classical solution of the original free boundary value problem satisses the weak form. Therefore, solutions to both weak and strong forms are unique. The weak ...

A Note on Ending Inventory Valuation in Multiperiod Production Scheduling Wilco van den Heuvel • Albert P.M. Wagelmans Econometric Institute Report EI 2002-25 Econometric Institute, Erasmus University Rotterdam, PO Box 1738, 3000 DR Rotterdam, The Netherlands [email protected] • [email protected] June 2002 In a recent paper, Fisher et al. (2001) present a method to mitigate end-effect...

Past field validity tests of contingent valuation have relied on voluntary contribution mechanisms to elicit actual willingness to pay, and may overestimate hypothetical bias because of free riding in the actual contributions. This paper argues that provision point mechanisms are a preferred alternative for field validity tests of contingent valuation because they increase the proportion of dem...

The classical theory of Gröbner bases, as developed by Bruno Buchberger, can be expanded to utilize objects more general than term orders. Each term order on the polynomial ring k[x] produces a filtration of k[x] and a valuation ring of the rational function field k(x). The algorithms developed by Buchberger can be performed by using directly the induced valuation or filtration in place of the ...

This paper provides a characterization of Bayes-Nash incentive compatible mechanisms in settings where agents have one-dimensional or multi-dimensional types, quasi-linear utility functions and interdependent valuations. The characterization is derived in terms of conditions for the underlying allocation function. We do this by making a link to network theory and building complete directed grap...

This is the story of a recent U.S. Supreme Court case on the use of cost-benefit analysis at the U.S. Environmental Protection Agency (EPA) for a regulation issued under the Clean Water Act (CWA). The case is Entergy Corp. v. Riverkeeper, Inc., et al. The case was not about the quality of the cost-benefit analysis, nor the fact that EPA conducted one, but whether EPA had CWA authority to base r...