<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>2306-9155</journal-id>
<journal-title><![CDATA[Retos de la Dirección]]></journal-title>
<abbrev-journal-title><![CDATA[Rev retos]]></abbrev-journal-title>
<issn>2306-9155</issn>
<publisher>
<publisher-name><![CDATA[Centro de Estudios de Dirección Empresarial Territorial de la Universidad de Camagüey Ignacio Agramonte Loynaz]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2306-91552023000300005</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Optimización de costos de material directo en la producción de aceros]]></article-title>
<article-title xml:lang="en"><![CDATA[Model for the optimization of direct costs in steel production]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez Molina]]></surname>
<given-names><![CDATA[Leonardo Rafael]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Velázquez Labrada]]></surname>
<given-names><![CDATA[Yadira]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Álvarez Álvarez]]></surname>
<given-names><![CDATA[Néstor Miguel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Centro Universitario de Educación Superior de Amazonas  ]]></institution>
<addr-line><![CDATA[ Manaos]]></addr-line>
<country>Brasil</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Empresa de Aceros Inoxidables de Las Tunas  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad de Camagüey &#8220;Ignacio Agramonte Loynaz&#8221;  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2023</year>
</pub-date>
<volume>17</volume>
<numero>3</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S2306-91552023000300005&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S2306-91552023000300005&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S2306-91552023000300005&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Objetivo:  Diseñar un modelo de optimización de los costos de material directo en la elaboración de aceros al carbono, que permita sustentar matemáticamente la toma de decisiones respecto a la composición de las coladas y el requerimiento de materiales.  Métodos y técnicas: Métodos estadísticos, programación lineal y computacionales.  Principales resultados: La identificación de los conceptos de costos directos que impactan significativamente en los procesos productivos de la industria siderúrgica cubana y la correcta estimación estadística de sus parámetros, permitieron el diseño de un modelo de programación lineal adecuado para el tratamiento matemático de la optimización del costo de material directo para la producción de aceros.  Conclusiones: El modelo de programación lineal diseñado, aporta una estructura adecuada para el tratamiento matemático de las variables, parámetros y elementos restrictivos asociados a la optimización de los costos de material directo en la producción de aceros. Las pruebas comparativas realizadas, permitieron verificar la pertinencia de la implementación del modelo propuesto, para la optimización de los costos productivos en la industria siderúrgica cubana.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Objective:  To design a model for optimizing direct material costs in the production of carbon steels, which allows mathematically supporting decision-making regarding the composition of the castings and the requirement of materials.  Methods and techniques:  Statistical methods, linear and computational programming.  Main results:  The identification of the concepts of direct costs that significantly impact the production processes of the Cuban steel industry and the correct statistical estimation of their parameters, allowed the design of a linear programming model suitable for the mathematical treatment of material cost optimization direct for the production of steel.  Conclusions:  The linear programming model designed provides an adequate structure for the mathematical treatment of the variables, parameters and restrictive elements associated with the optimization of direct material costs in steel production. The comparative tests carried out allowed us to verify the relevance of the implementation of the proposed model for the optimization of production costs in the Cuban steel industry.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[producción de acero]]></kwd>
<kwd lng="es"><![CDATA[costos de material directo]]></kwd>
<kwd lng="es"><![CDATA[optimización y programación lineal]]></kwd>
<kwd lng="en"><![CDATA[steel production]]></kwd>
<kwd lng="en"><![CDATA[direct material costs]]></kwd>
<kwd lng="en"><![CDATA[optimization and linear programming]]></kwd>
</kwd-group>
</article-meta>
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<given-names><![CDATA[F]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Optimizing Iron Ore Proportion Aimed for Low Cost by Linear Programming Method]]></article-title>
<source><![CDATA[Metallurgical and Materials Transactions B]]></source>
<year>2022</year>
<volume>53</volume>
<numero>6</numero>
<issue>6</issue>
<page-range>4075-86</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
