<?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>0035-001X</journal-id>
<journal-title><![CDATA[Revista mexicana de física]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. fis.]]></abbrev-journal-title>
<issn>0035-001X</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de Física]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0035-001X2013000300015</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[The diagonal Bernoulli differential estimation equation]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Medel]]></surname>
<given-names><![CDATA[J. J.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Palma]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Computer Research Centre  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<aff id="A02">
<institution><![CDATA[,Computing School  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2013</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2013</year>
</pub-date>
<volume>59</volume>
<numero>3</numero>
<fpage>282</fpage>
<lpage>286</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0035-001X2013000300015&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0035-001X2013000300015&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0035-001X2013000300015&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[The Bernoulli Differential Equation traditionally applies a linearization procedure instead of solving the direct form, and viewed in state space has unknown parametres, focusing all attention on it. This equation viewed in state space with unknown matrix parametres had a natural transformation and introduced a diagonal description. In this case, the problem is to know the matrix parametres. This procedure is a new technique for solving the state space Bernoulli Differential Equation without using linearization into diagonal filtering application. Diagonal filtering is a kind of quadratic estimation. This is a procedure which uses observed signals with noises and produces the best estimation for unknown matrix parametres. More formally, diagonal filtering operates recursively on streams of noisy input signals to produce an optimal estimation of the underlying state system. The recursive nature allows running in Real-time bounded temporally using the present input signal and the previously calculated state and no additional past information. From a theoretical standpoint, the diagonal filtering assumption considered that the black-box system model includes all error terms and signals having a Gaussian distribution, described as a recursive system in a Lebesgue sense. Diagonal filtering has numerous applications in science and pure solutions, but generally, the applications are in tracking and performing the stochastic system.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Al resolver la ecuación diferencial de Bernoulli tradicionalmente se aplica un proceso de linealización en lugar de un método directo considerando que tiene parámetros desconocidos. Este artículo considera una transformación natural al espacio de estados e introduce la descripción diagonal; en este caso, el problema es conocer la matriz de parámetros. El procedimiento es una nueva técnica para resolver la ecuación diferencial de Bernoulli sin usar la linealización aplicando el filtrado en forma diagonal. Con el cual se realiza la estimación con base en el segundo momento de probabilidad. Éste es un procedimiento que utiliza a las señales observables con ruido, produce la mejor estimación para los parámetros desconocidos. Formalmente, este opera recursivamente sobre la señal de entrada con ruido, produciendo una estimación (optima de los parámetros internos del sistema. Debido a la naturaleza recursiva del procedimiento, este puede implementarse en tiempo-real ya que su respuesta está acotada temporalmente, usando para ello tan solo a la señal de entrada presente y el estado calculado anteriormente, sin información previa adicional. Desde un punto de vista teórico, la hipótesis principal del filtrado en forma diagonal es que el sistema subyacente es un sistema dinámico y que todos los términos, tanto de error como de la señal de entrada, tienen una distribución de Gauss. El filtro diagonal es un sistema recursivo en el sentido de Lebesgue que estima parámetros. Tiene numerosas aplicaciones en ciencias aplicadas y desarrollos teóricos. Una aplicación común es el seguimiento de las trayectorias en los sistemas dinámicos.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Filtering]]></kwd>
<kwd lng="en"><![CDATA[matrix theory]]></kwd>
<kwd lng="en"><![CDATA[control theory]]></kwd>
<kwd lng="en"><![CDATA[stochastic processes]]></kwd>
<kwd lng="es"><![CDATA[Teoría matricial]]></kwd>
<kwd lng="es"><![CDATA[teoría de control]]></kwd>
<kwd lng="es"><![CDATA[procesos estocásticos]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[  	    <p align="justify"><font face="verdana" size="4">Research</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="center"><font face="verdana" size="4"><b>The diagonal Bernoulli differential estimation equation</b></font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="center"><font face="verdana" size="2"><b>J. J. Medel&ordf; and R. Palma<sup>b</sup></b></font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><sup><i>a</i></sup> <i>Computer Research Centre, Venus S/N, Col. Nueva Industrial Vallejo, C.P. 07738.</i></font></p>  	    <p align="justify"><font face="verdana" size="2"><i><sup>b</sup> Computing School Col. Nueva Industrial Vallejo, C.P. 07738, e&#45;mail:</i> <a href="mailto:jjmedelj@yahoo.com.mx">jjmedelj@yahoo.com.mx</a>.</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">Received 28 September 2012;    <br> 	Accepted 21 February 2013</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Abstract</b></font></p>  	    <p align="justify"><font face="verdana" size="2">The Bernoulli Differential Equation traditionally applies a linearization procedure instead of solving the direct form, and viewed in state space has unknown parametres, focusing all attention on it. This equation viewed in state space with unknown matrix parametres had a natural transformation and introduced a diagonal description. In this case, the problem is to know the matrix parametres. This procedure is a new technique for solving the state space Bernoulli Differential Equation without using linearization into diagonal filtering application. Diagonal filtering is a kind of quadratic estimation. This is a procedure which uses observed signals with noises and produces the best estimation for unknown matrix parametres. More formally, diagonal filtering operates recursively on streams of noisy input signals to produce an optimal estimation of the underlying state system. The recursive nature allows running in Real&#45;time bounded temporally using the present input signal and the previously calculated state and no additional past information. From a theoretical standpoint, the diagonal filtering assumption considered that the black&#45;box system model includes all error terms and signals having a Gaussian distribution, described as a recursive system in a Lebesgue sense. Diagonal filtering has numerous applications in science and pure solutions, but generally, the applications are in tracking and performing the stochastic system.</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Keywords:</b> Filtering; matrix theory; control theory; stochastic processes.</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Resumen</b></font></p>  	    <p align="justify"><font face="verdana" size="2">Al resolver la ecuaci&oacute;n diferencial de Bernoulli tradicionalmente se aplica un proceso de linealizaci&oacute;n en lugar de un m&eacute;todo directo considerando que tiene par&aacute;metros desconocidos. Este art&iacute;culo considera una transformaci&oacute;n natural al espacio de estados e introduce la descripci&oacute;n diagonal; en este caso, el problema es conocer la matriz de par&aacute;metros. El procedimiento es una nueva t&eacute;cnica para resolver la ecuaci&oacute;n diferencial de Bernoulli sin usar la linealizaci&oacute;n aplicando el filtrado en forma diagonal. Con el cual se realiza la estimaci&oacute;n con base en el segundo momento de probabilidad. &Eacute;ste es un procedimiento que utiliza a las se&ntilde;ales observables con ruido, produce la mejor estimaci&oacute;n para los par&aacute;metros desconocidos. Formalmente, este opera recursivamente sobre la se&ntilde;al de entrada con ruido, produciendo una estimaci&oacute;n (optima de los par&aacute;metros internos del sistema. Debido a la naturaleza recursiva del procedimiento, este puede implementarse en tiempo&#45;real ya que su respuesta est&aacute; acotada temporalmente, usando para ello tan solo a la se&ntilde;al de entrada presente y el estado calculado anteriormente, sin informaci&oacute;n previa adicional. Desde un punto de vista te&oacute;rico, la hip&oacute;tesis principal del filtrado en forma diagonal es que el sistema subyacente es un sistema din&aacute;mico y que todos los t&eacute;rminos, tanto de error como de la se&ntilde;al de entrada, tienen una distribuci&oacute;n de Gauss. El filtro diagonal es un sistema recursivo en el sentido de Lebesgue que estima par&aacute;metros. Tiene numerosas aplicaciones en ciencias aplicadas y desarrollos te&oacute;ricos. Una aplicaci&oacute;n com&uacute;n es el seguimiento de las trayectorias en los sistemas din&aacute;micos.</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Descriptores:</b> Teor&iacute;a matricial; teor&iacute;a de control; procesos estoc&aacute;sticos.</font></p>  	    ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2">PACS: 02.10.Ud; 02.10.Yn; 02.30.Yy; 02.50.Ey; 02.70.&#45;c</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><a href="/pdf/rmf/v59n3/v59n3a15.pdf" target="_blank">DESCARGAR ART&Iacute;CULO EN FORMATO PDF</a></font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>References</b></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2">1. U. Welner, <i>Models in Biology: The Basic Application of Mathematics and Statistics in Biological Sciences</i> (UMK Torun, 2004).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8386361&pid=S0035-001X201300030001500001&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2">2. V. Barger and M. Olson, <i>Classical Mechanics A Modern Pre&#45;spective</i> Second Edition, Chapter 11, (McGraw&#45;Hill, 1995).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8386363&pid=S0035-001X201300030001500002&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    ]]></body>
<body><![CDATA[<!-- ref --><p align="justify"><font face="verdana" size="2">3. D. Hongbo, P. Zhongxiao, and Seeber, <i>Study on Stochastic Resonance for the process ofActive&#45;passive Transition ofIron in SulfuricAcid</i> (ICSE, I, 1999).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8386365&pid=S0035-001X201300030001500003&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2">4. L. Morales and Mollina, <i>Soliton rachets inhomogeneous nonlinear Klein Gordon</i> (2005). arXiv:Cond&#45;mat/0510704v2.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8386367&pid=S0035-001X201300030001500004&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2">5. J. A. Gonz&aacute;lez, A. Marcano, B.A. Mello and L. Trujillo, <i>Controlled transport ofsolitons and bubbles using external perturbations</i> (2005). arXiv:Cond&#45;mat/0510187v1.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8386369&pid=S0035-001X201300030001500005&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2">6. S. R. Friberg, S. Machida, M.J. Werner, A. Levanon and T. Mukai, <i>PhysRevLet</i> <b>77</b> 1996.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8386371&pid=S0035-001X201300030001500006&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2">7. M. L. Boas, <i>Mathematical Methods In The Physical Sciences</i> Second Edition, Chapter 8, (John Wiley &amp; Sons, Inc, 1983).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8386373&pid=S0035-001X201300030001500007&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    ]]></body>
<body><![CDATA[<!-- ref --><p align="justify"><font face="verdana" size="2">8. C. Harper, <i>Introduction to Mathematical Physics</i> Chapter 5, (Prentice&#45;Hall, India, 1978).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8386375&pid=S0035-001X201300030001500008&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2">9. A. Y. Rohedi, <i>J. Phys. Appl.</i> <b>3</b> 2007.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8386377&pid=S0035-001X201300030001500009&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2">10. A. Katok and B. Hasselblatt, <i>Introduction to the modern theory ofdynamical systems</i> (Cambridge, 1996).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8386379&pid=S0035-001X201300030001500010&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2">11 . J. Palis and W. de Melo, <i>Geometric theory ofdynamical systems: An introduction</i> (Springer&#45;Verlag, 1982).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8386381&pid=S0035-001X201300030001500011&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2">12. R.H. Abraham and C.D. Shaw, <i>Dynamics: The geometry of behavior</i> 2nd ed., (Addison&#45;Wesley, 1992).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8386383&pid=S0035-001X201300030001500012&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    ]]></body>
<body><![CDATA[<!-- ref --><p align="justify"><font face="verdana" size="2">13. O. Galor, <i>Discrete Dynamical Systems</i> (Springer, 2011).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8386385&pid=S0035-001X201300030001500013&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2">14. A. H. Jazwinski, <i>Stochastic Processes and Filtering Theory</i> (New York: Academic Press, 1970).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8386387&pid=S0035-001X201300030001500014&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2">15. B. K. Oksendal, <i>Stochastic Differential Equations: An Introduction with Applications,</i> 6th ed., (Berlin: Springer, 2003).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8386389&pid=S0035-001X201300030001500015&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2">16. D. Gilbarg and N. Trudinger, <i>Elliptic partial differential equations ofsecond order</i> (Springer, 2001).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8386391&pid=S0035-001X201300030001500016&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2">17. N. S. Nise, <i>Control Systems Engineering</i> 4th ed., (John Wiley &amp; Sons, Inc., 2004).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8386393&pid=S0035-001X201300030001500017&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    ]]></body>
<body><![CDATA[<!-- ref --><p align="justify"><font face="verdana" size="2">18. E. D. Sontag, <i>Mathematical Control Theory: Deterministic Finite Dimensional Systems,</i> 2nd ed., (Springer, 1999).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8386395&pid=S0035-001X201300030001500018&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2">19. B. Friedland, <i>Control System Design: An Introduction to State Space Methods</i> (Dover, 2005).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8386397&pid=S0035-001X201300030001500019&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2">20. L. A. Zadeh and C.A. Desoer, <i>Linear System Theory,</i> (Krieger PubCo., 1979).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8386399&pid=S0035-001X201300030001500020&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2">21. R. Palma, J. J. Medel, and G. Garrido, <i>Rev. Mex. Fis.</i> <b>58</b> (2012) 0069.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8386401&pid=S0035-001X201300030001500021&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2">22. J. J. Medel, R. Urbieta, and R. Palma, <i>Rev. Mex. Fis.</i> <b>57</b> (2011), 0204.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8386403&pid=S0035-001X201300030001500022&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    ]]></body>
<body><![CDATA[<!-- ref --><p align="justify"><font face="verdana" size="2">23. J. J. Medel, J. C. Garcia, and R. Urbieta, <i>Rev. Mex. Fis.</i> <b>57</b> (2011)0413.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8386405&pid=S0035-001X201300030001500023&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2">24. J. J. Medel and M. T. Zagaceta, <i>Rev. Mex. Fis.</i> <b>56</b> (2010) 0001.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8386407&pid=S0035-001X201300030001500024&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2">25. J. J. Medel and C. V. Garcia, <i>Rev. Mex. Fis.</i> <b>56</b> (2010) 0054.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8386409&pid=S0035-001X201300030001500025&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>      ]]></body><back>
<ref-list>
<ref id="B1">
<label>1</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Welner]]></surname>
<given-names><![CDATA[U.]]></given-names>
</name>
</person-group>
<source><![CDATA[Models in Biology: The Basic Application of Mathematics and Statistics in Biological Sciences]]></source>
<year>2004</year>
<publisher-loc><![CDATA[Torun ]]></publisher-loc>
<publisher-name><![CDATA[UMK]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B2">
<label>2</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Barger]]></surname>
<given-names><![CDATA[V.]]></given-names>
</name>
<name>
<surname><![CDATA[Olson]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<source><![CDATA[Classical Mechanics A Modern Pre-spective]]></source>
<year>1995</year>
<edition>Second</edition>
<publisher-name><![CDATA[McGraw-Hill]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B3">
<label>3</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hongbo]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Zhongxiao]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Seeber]]></surname>
</name>
</person-group>
<source><![CDATA[Study on Stochastic Resonance for the process ofActive-passive Transition ofIron in SulfuricAcid]]></source>
<year>1999</year>
<publisher-name><![CDATA[ICSE]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B4">
<label>4</label><nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Morales]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Mollina]]></surname>
</name>
</person-group>
<source><![CDATA[Soliton rachets inhomogeneous nonlinear Klein Gordon]]></source>
<year>2005</year>
</nlm-citation>
</ref>
<ref id="B5">
<label>5</label><nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[González]]></surname>
<given-names><![CDATA[J. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Marcano]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Mello]]></surname>
<given-names><![CDATA[B.A.]]></given-names>
</name>
<name>
<surname><![CDATA[Trujillo]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
</person-group>
<source><![CDATA[Controlled transport ofsolitons and bubbles using external perturbations]]></source>
<year>2005</year>
</nlm-citation>
</ref>
<ref id="B6">
<label>6</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Friberg]]></surname>
<given-names><![CDATA[S. R.]]></given-names>
</name>
<name>
<surname><![CDATA[Machida]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Werner]]></surname>
<given-names><![CDATA[M.J.]]></given-names>
</name>
<name>
<surname><![CDATA[Levanon]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Mukai]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
</person-group>
<source><![CDATA[PhysRevLet]]></source>
<year>1996</year>
<volume>77</volume>
</nlm-citation>
</ref>
<ref id="B7">
<label>7</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Boas]]></surname>
<given-names><![CDATA[M. L.]]></given-names>
</name>
</person-group>
<source><![CDATA[Mathematical Methods In The Physical Sciences]]></source>
<year>1983</year>
<edition>Second</edition>
<publisher-name><![CDATA[John Wiley & Sons, Inc]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B8">
<label>8</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Harper]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
</person-group>
<source><![CDATA[Introduction to Mathematical Physics]]></source>
<year>1978</year>
<publisher-name><![CDATA[Prentice-Hall]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B9">
<label>9</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rohedi]]></surname>
<given-names><![CDATA[A. Y.]]></given-names>
</name>
</person-group>
<source><![CDATA[J. Phys. Appl]]></source>
<year>2007</year>
<volume>3</volume>
</nlm-citation>
</ref>
<ref id="B10">
<label>10</label><nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Katok]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Hasselblatt]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
</person-group>
<source><![CDATA[Introduction to the modern theory ofdynamical systems]]></source>
<year>1996</year>
<publisher-loc><![CDATA[Cambridge ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B11">
<label>11</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Palis]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[de Melo]]></surname>
<given-names><![CDATA[W.]]></given-names>
</name>
</person-group>
<source><![CDATA[Geometric theory ofdynamical systems: An introduction]]></source>
<year>1982</year>
<publisher-name><![CDATA[Springer-Verlag]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B12">
<label>12</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Abraham]]></surname>
<given-names><![CDATA[R.H.]]></given-names>
</name>
<name>
<surname><![CDATA[Shaw]]></surname>
<given-names><![CDATA[C.D.]]></given-names>
</name>
</person-group>
<source><![CDATA[Dynamics: The geometry of behavior]]></source>
<year>1992</year>
<edition>2nd</edition>
<publisher-name><![CDATA[Addison-Wesley]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B13">
<label>13</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Galor]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
</person-group>
<source><![CDATA[Discrete Dynamical Systems]]></source>
<year>2011</year>
<publisher-name><![CDATA[Springer]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B14">
<label>14</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Jazwinski]]></surname>
<given-names><![CDATA[A. H.]]></given-names>
</name>
</person-group>
<source><![CDATA[Stochastic Processes and Filtering Theory]]></source>
<year>1970</year>
<publisher-loc><![CDATA[New York ]]></publisher-loc>
<publisher-name><![CDATA[Academic Press]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B15">
<label>15</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Oksendal]]></surname>
<given-names><![CDATA[B. K.]]></given-names>
</name>
</person-group>
<source><![CDATA[Stochastic Differential Equations: An Introduction with Applications]]></source>
<year>2003</year>
<edition>6th</edition>
<publisher-loc><![CDATA[Berlin ]]></publisher-loc>
<publisher-name><![CDATA[Springer]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B16">
<label>16</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gilbarg]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Trudinger]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
</person-group>
<source><![CDATA[Elliptic partial differential equations ofsecond order]]></source>
<year>2001</year>
<publisher-name><![CDATA[Springer]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B17">
<label>17</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Nise]]></surname>
<given-names><![CDATA[N. S.]]></given-names>
</name>
</person-group>
<source><![CDATA[Control Systems Engineering]]></source>
<year>2004</year>
<edition>4th</edition>
<publisher-name><![CDATA[John Wiley & Sons, Inc.]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B18">
<label>18</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sontag]]></surname>
<given-names><![CDATA[E. D.]]></given-names>
</name>
</person-group>
<source><![CDATA[Mathematical Control Theory: Deterministic Finite Dimensional Systems]]></source>
<year>1999</year>
<edition>2nd</edition>
<publisher-name><![CDATA[Springer]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B19">
<label>19</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Friedland]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
</person-group>
<source><![CDATA[Control System Design: An Introduction to State Space Methods]]></source>
<year>2005</year>
<publisher-name><![CDATA[Dover]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B20">
<label>20</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Zadeh]]></surname>
<given-names><![CDATA[L. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Desoer]]></surname>
<given-names><![CDATA[C.A.]]></given-names>
</name>
</person-group>
<source><![CDATA[Linear System Theory]]></source>
<year>1979</year>
<publisher-name><![CDATA[Krieger PubCo]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B21">
<label>21</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Palma]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Medel]]></surname>
<given-names><![CDATA[J. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Garrido]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
</person-group>
<source><![CDATA[Rev. Mex. Fis]]></source>
<year>2012</year>
<volume>58</volume>
<page-range>0069</page-range></nlm-citation>
</ref>
<ref id="B22">
<label>22</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mede]]></surname>
<given-names><![CDATA[J. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Urbieta]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Palma]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
</person-group>
<source><![CDATA[Rev. Mex. Fis]]></source>
<year>2011</year>
<volume>57</volume>
<page-range>0204</page-range></nlm-citation>
</ref>
<ref id="B23">
<label>23</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Medel]]></surname>
<given-names><![CDATA[J. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Garcia]]></surname>
<given-names><![CDATA[J. C.]]></given-names>
</name>
<name>
<surname><![CDATA[Urbieta]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
</person-group>
<source><![CDATA[Rev. Mex. Fis]]></source>
<year>2011</year>
<volume>57</volume>
<page-range>0413</page-range></nlm-citation>
</ref>
<ref id="B24">
<label>24</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Medel]]></surname>
<given-names><![CDATA[J. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Zagaceta]]></surname>
<given-names><![CDATA[M. T.]]></given-names>
</name>
</person-group>
<source><![CDATA[Rev. Mex. Fis]]></source>
<year>2010</year>
<volume>56</volume>
<page-range>0001</page-range></nlm-citation>
</ref>
<ref id="B25">
<label>25</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Medel]]></surname>
<given-names><![CDATA[J. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Garcia]]></surname>
<given-names><![CDATA[C. V.]]></given-names>
</name>
</person-group>
<source><![CDATA[Rev. Mex. Fis]]></source>
<year>2010</year>
<volume>56</volume>
<page-range>0054</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
