<?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>1870-3925</journal-id>
<journal-title><![CDATA[Región y sociedad]]></journal-title>
<abbrev-journal-title><![CDATA[Región y sociedad]]></abbrev-journal-title>
<issn>1870-3925</issn>
<publisher>
<publisher-name><![CDATA[El Colegio de Sonora]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1870-39252017000100153</article-id>
<article-id pub-id-type="doi">10.22198/rys.2017.68.a872</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Morfología y estructura urbana en las ciudades medias mexicanas]]></article-title>
<article-title xml:lang="en"><![CDATA[Morphology and urban structure in Mexican medium-sized cities]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Álvarez de la Torre]]></surname>
<given-names><![CDATA[Guillermo Benjamín]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma de Baja California Instituto de Investigaciones Sociales ]]></institution>
<addr-line><![CDATA[Mexicali Baja California]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2017</year>
</pub-date>
<volume>29</volume>
<numero>68</numero>
<fpage>153</fpage>
<lpage>191</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1870-39252017000100153&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1870-39252017000100153&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1870-39252017000100153&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: En este trabajo se investigaron modelos espaciales y su evolución en 32 ciudades medias mexicanas, según su morfología de crecimiento; esto, a partir del análisis espacial del gradiente de densidad, la estructura de edad de la población y la tenencia de la vivienda, con información de los censos generales de población y vivienda de los años 1990 y 2000. Según los resultados estadísticos, se puede afirmar que existe un cambio intraurbano en el comportamiento espacial de las variables que, independientemente de su morfología, la estructura interna en las ciudades medias ya no es de tipo central, dado que la varianza en los indicadores estudiados no está determinada por la distancia al centro, además, se plantea la hipótesis de que la estructura espacial de las ciudades medias está más relacionada con la temporalidad del espacio urbano que con la distancia al centro. Es indispensable estudiar estas dinámicas intraurbanas para identificar la evolución de las ciudades, y también las estrategias de planeación más adecuadas para mejorar su funcionamiento y el bienestar de sus habitantes.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: This is a study of spatial models and their evolution in 32 Mexican medium-sized cities, according to their growth morphology, from the spatial analysis of the density gradient, population&#8217;s age structure and housing tenure, with information of the general population and housing censuses of 1990 y 2000. According to the statistical results, it can be said that there is an intra-urban change in the spatial performance of variables, which, independently of their morphology, the internal structure in medium-sized cities is no longer central, since variance in the indicators studied is not determined by the distance to the center. Furthermore, it is hypothesized that the spatial structure of medium-sized cities is more connected with urban space&#8217;s temporality than with the distance to the center. It is essential to study these intra-urban dynamics to identify cities&#8217; evolution, as well as more appropriate planning strategies in order to improve their performance and their inhabitants&#8217; well-being.]]></p></abstract>
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<kwd lng="es"><![CDATA[estructura urbana]]></kwd>
<kwd lng="es"><![CDATA[ciudades medias]]></kwd>
<kwd lng="es"><![CDATA[morfología urbana]]></kwd>
<kwd lng="es"><![CDATA[evolución urbana]]></kwd>
<kwd lng="en"><![CDATA[urban structure]]></kwd>
<kwd lng="en"><![CDATA[medium-sized cities]]></kwd>
<kwd lng="en"><![CDATA[urban morphology]]></kwd>
<kwd lng="en"><![CDATA[urban evolution]]></kwd>
</kwd-group>
</article-meta>
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