<Para ID="Par1">A strongly polynomial-time algorithm is proposed for the strict homogeneous linear-inequality feasibility problem in the positive orthant, that is, to obtain <InlineEquation ID="IEq1"> <EquationSource Format="TEX">$$x\in \mathbb {R}^n$$</EquationSource> <EquationSource Format="MATHML"> <math xmlns:xlink="http://www.w3.org/1999/xlink"> <mrow> <mi>x</mi> <mo>∈</mo> <msup> <mrow> <mi mathvariant="double-struck">R</mi> </mrow> <mi>n</mi> </msup> </mrow> </math> </EquationSource> </InlineEquation>, such that <InlineEquation ID="IEq2"> <EquationSource Format="TEX">$$Ax 0$$</EquationSource> <EquationSource Format="MATHML"> <math xmlns:xlink="http://www.w3.org/1999/xlink"> <mrow> <mi>A</mi> <mi>x</mi> <mo></mo> <mn>0</mn> </mrow> </math> </EquationSource> </InlineEquation>, <InlineEquation ID="IEq3"> <EquationSource Format="TEX">$$x 0$$</EquationSource> <EquationSource Format="MATHML"> <math xmlns:xlink="http://www.w3.org/1999/xlink"> <mrow> <mi>x</mi> <mo></mo> <mn>0</mn> </mrow> </math> </EquationSource> </InlineEquation>, for an <InlineEquation ID="IEq4"> <EquationSource Format="TEX">$$m\times n$$</EquationSource> <EquationSource Format="MATHML"> <math xmlns:xlink="http://www.w3.org/1999/xlink"> <mrow> <mi>m</mi> <mo>×</mo> <mi>n</mi> </mrow> </math> </EquationSource>...</equationsource></equationsource></inlineequation></equationsource></equationsource></inlineequation></equationsource></equationsource></inlineequation></equationsource></equationsource></inlineequation></para>

I use linear programming models to define standardised, aggregate environmental performance indicators for firms. The best practice frontier obtained corresponds to decision making units showing the best environmental behaviour. Results are obtained with data from U.S. fossil fuel-fired electric...

В статье рассматриваются вопросы применения различных инструментов городского землепользования с учетом экологического фактора. Анализируются модели...

This study was designed to test and identify the impact of improved seeds on small farmers' productivity, income and livelihood in Bara locality. Sixty households participants were randomly selected through a field survey during 2011 for 2008/2009, 2009/2010 and 2010/2011 cropping seasons. The...

В последнее время темпы роста рынка кредитования физических лиц опережают темпы роста рынка корпоративного кредитования. Это приводит к увеличению кредитных...

Обозначены основные этапы жизни и научной биографии лауреата Нобелевской премии в области экономики Л.В. Канторовича, оценивается его вклад в экономическую...

We review nonparametric estimation of efficiency and productivity, by which we mainly mean activity analysis, or data envelopment analysis (DEA). The review covers topics that we hope will be of special interest to those doing research in the realm of agriculture. We also include a brief...

Considered here is direct exchange of production allowances or input factors. Motivated by practical modeling and compution, we suppose every owner or user of such items has a linear technology. The issue is whether competitive market equilibrium can be reached merely via iterated bilateral...

This study develops and implements a theory and method for analyzing whether introducing new securities or relaxing investment constraints improves the investment opportunity set for risk averse investors. We develop a test procedure for ‘stochastic spanning’ for two nested polyhedral...

In this paper we analyze possible source of tax evasion in the multinational entity (hereinafter “MNE”). We show that the tax obligation of the whole MNE depends on the ownership structure of companies, which form MNE and that the structure could be described by matrix form. Therefore the...