<?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>0188-6266</journal-id>
<journal-title><![CDATA[Acta universitaria]]></journal-title>
<abbrev-journal-title><![CDATA[Acta univ]]></abbrev-journal-title>
<issn>0188-6266</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Guanajuato, Dirección de Investigación y Posgrado]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0188-62662017000100040</article-id>
<article-id pub-id-type="doi">10.15174/au.2017.1255</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[La regresión lineal en la evaluación de variables de ingeniería de riego agrícola y del cultivo de maíz forrajero]]></article-title>
<article-title xml:lang="en"><![CDATA[Linear regression in the evaluation of engineering variables of agricultural irrigation and field corn]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Montemayor Trejo]]></surname>
<given-names><![CDATA[José Alfredo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Munguía López]]></surname>
<given-names><![CDATA[Juan]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Segura Castruita]]></surname>
<given-names><![CDATA[Miguel Ángel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Yescas Coronado]]></surname>
<given-names><![CDATA[Pablo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Orozco Vidal]]></surname>
<given-names><![CDATA[Jorge Arnaldo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Woo Reza]]></surname>
<given-names><![CDATA[José Luis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Tecnológico de Torreón  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Centro de Investigación de Química Aplicada  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Autónoma de San Luis Potosí Facultad de Agronomía ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>02</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>02</month>
<year>2017</year>
</pub-date>
<volume>27</volume>
<numero>1</numero>
<fpage>40</fpage>
<lpage>44</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0188-62662017000100040&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0188-62662017000100040&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0188-62662017000100040&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN La herramienta matemática regresión lineal fue utilizada para evaluar dos estudios de caso en maíz forrajero; en el primero se estableció la relación de las variables lámina (de evaporación y agua aplicada) a cielo abierto y en función del tiempo; en el segundo se relacionó la producción de materia seca (MS) con el índice de área foliar (IAF) en maíz forrajero con y sin acolchado plástico a través del tiempo, con el fin de comprender el fenómeno que se presenta en ambos ensayos. Los trabajos se realizaron durante el lapso del 2006 al 2013, en la Comarca Lagunera de Coahuila y Durango, México, donde grupos de datos de las variables evaporación (EV), lámina de riego aplicada (LR), MS e IAF del cultivo de maíz forrajero fueron utilizados para proponer funciones matemáticas del tipo de regresión lineal. Los resultados muestran ecuaciones lineales de primer y segundo orden de tipo predictivo con R2 mayores que 0.8, las cuales permiten entender e interpretar los fenómenos de consumo de agua y acumulación de materia seca del maíz forrajero.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT The statistical tool linear regression was used to evaluate two case studies of field corn with the purpose of understanding the phenomena that both trials present. The first case study established the relationship between the water depth variables (evaporation and water applied) under open air conditions and as a function of time; in the second, the production of dry mass (MS) was correlated with the leaf area index (IAF) in field corn, with and without plastic mulch over time. The research was undertaken between 2006 and 2013 at the Comarca Lagunera of Coahuila and Durango, Mexico, where groups of data of the evaporation variables (EV), depth of irrigation water applied (LR), MS and IAF of the field corn were used to propose linear regression type mathematical functions. The results show first and second order linear regression. The results show predictive linear equations of first and second order with R2 values greater than 0.8, which allow for the understanding and interpretation of the phenomena of water consumption and the accumulation of field corn dry material.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Modelos de regresión]]></kwd>
<kwd lng="es"><![CDATA[evaporación]]></kwd>
<kwd lng="es"><![CDATA[índice de área foliar]]></kwd>
<kwd lng="en"><![CDATA[Regression models]]></kwd>
<kwd lng="en"><![CDATA[evaporation]]></kwd>
<kwd lng="en"><![CDATA[leaf area index]]></kwd>
</kwd-group>
</article-meta>
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