Results 1 to 10 of about 734,348 (361)

Upper and Lower Bounds for Capital and Wages

open access: yesEconomía Teoría y Práctica, 2012
El artículo estudia la división de un sistema de producción en los departamentos I y II e introduce una división posterior del departamento II en un sector homotético y otro complementario.
Alberto Benítez Sánchez   +1 more
doaj   +5 more sources

Some Refinements and Generalizations of I. Schur Type Inequalities

open access: yesThe Scientific World Journal, 2014
Recently, extensive researches on estimating the value of e have been studied. In this paper, the structural characteristics of I. Schur type inequalities are exploited to generalize the corresponding inequalities by variable parameter techniques.
Xian-Ming Gu   +5 more
doaj   +1 more source

Bounds of non-monotone complexity for the multi-valued logic functions

open access: yesУчёные записки Казанского университета: Серия Физико-математические науки, 2020
The non-monotone complexity of realization of k-valued logic functions by circuits in a special basis was investigated. The basis consists of elements of two types: the first type comprises all monotone functions (with respect to the order 0 < 1 < 2
V.V. Kochergin, A.V. Mikhailovich
doaj   +1 more source

Qualitative analysis on the electrohydrodynamic flow equation

open access: yesAIMS Mathematics
In this paper, we present a comprehensive analysis of the lower and upper bounds of solutions for a nonlinear second-order ordinary differential equation governing the electrohydrodynamic flow of a conducting fluid in cylindrical conduits.
Lazhar Bougoffa   +2 more
doaj   +1 more source

NEW UPPER AND LOWER BOUNDS LINE OF SIGHT PATH LOSS MODELS FOR MOBILE PROPAGATION IN BUILDINGS

open access: yesASEAN Journal on Science and Technology for Development, 2017
This paper proposes a method to predict line-of-sight (LOS) path loss in buildings. We performed measurements in two different type of buildings at a frequency of 1.8 GHz and propose new upper and lower bounds path loss models which depend on max and min
Supachai Phaiboon   +2 more
doaj   +1 more source

On the Achievable Stabilization Delay Margin for Linear Plants with Time-Varying Delays

open access: yesMathematics, 2017
The paper contributes to stabilization problems of linear systems subject to time-varying delays. Drawing upon small gain criteria and robust analysis techniques, upper and lower bounds on the largest allowable time-varying delay are developed by using ...
Jing Zhu
doaj   +1 more source

A new sequence related to the Euler–Mascheroni constant

open access: yesJournal of Inequalities and Applications, 2018
In this paper, we provide a new quicker sequence convergent to the Euler–Mascheroni constant using an approximation of Padé type. Our sequence has a relatively simple form and higher speed of convergence.
Shanhe Wu, Gabriel Bercu
doaj   +1 more source

Tight bounds for the median of a gamma distribution.

open access: yesPLoS ONE, 2023
The median of a standard gamma distribution, as a function of its shape parameter k, has no known representation in terms of elementary functions. In this work we prove the tightest upper and lower bounds of the form 2-1/k(A + k): an upper bound with A =
Richard F Lyon
doaj   +1 more source

Optimal consumption and portfolio selection with lower and upper bounds on consumption

open access: yesAdvances in Difference Equations, 2020
We investigate the optimal consumption and investment problem with lower and upper bounds on consumption constraints. We derive closed-form solutions by means of the dynamic programming approach.
Kum-Hwan Roh, Yong Hyun Shin
doaj   +1 more source

Numerical radius inequalities and its applications in estimation of zeros of polynomials

open access: yes, 2019
We present some upper and lower bounds for the numerical radius of a bounded linear operator defined on complex Hilbert space, which improves on the existing upper and lower bounds. We also present an upper bound for the spectral radius of sum of product
Abu-Omar   +19 more
core   +1 more source

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