<div dir="ltr">Hola,<div><br></div><div>Re-envío el anuncio de una conferencia en la Facultad de Ingeniería, Paseo Colon 850, Buenos Aires.</div><div><br></div><div>Saludos</div><div>Luciana<br><div class="gmail_quote"><div>
<br></div><div><br></div><div><div style="color:rgb(102,97,84);font-size:13px;font-family:Arial,Verdana,sans-serif"><font color="#000000" size="3"><b>Lunes 29 de abril de 2013, 14 hs. (aula 507)</b></font></div>
<div style="color:rgb(102,97,84);font-size:13px;font-family:Arial,Verdana,sans-serif"><b><font color="#000000">Facultad de Ingeniería UBA, sede Paseo Colón.</font></b></div><div style="color:rgb(102,97,84);font-size:13px;font-family:Arial,Verdana,sans-serif">
<b><font color="#000000"><br></font></b></div><div style="color:rgb(102,97,84);font-size:13px;font-family:Arial,Verdana,sans-serif"><b><font color="#000000">Lou Kondic, NJIT</font></b></div>
<div style="color:rgb(102,97,84);font-size:13px;font-family:Arial,Verdana,sans-serif">(<a href="http://m.njit.edu/~kondic/" rel="nofollow" style="color:rgb(141,161,173)" target="_blank">http://m.njit.edu/~kondic/</a>)</div>
<div style="color:rgb(102,97,84);font-size:13px;font-family:Arial,Verdana,sans-serif"><br></div><div style="color:rgb(102,97,84);font-size:13px;font-family:Arial,Verdana,sans-serif">
<b>Persistence of Force Networks in Compressed Granular Media</b></div><div style="color:rgb(102,97,84);font-size:13px;font-family:Arial,Verdana,sans-serif"><br></div><div style="color:rgb(102,97,84);font-size:13px;font-family:Arial,Verdana,sans-serif">
We discuss properties of force landscapes for isotropically</div><div style="color:rgb(102,97,84);font-size:13px;font-family:Arial,Verdana,sans-serif">compressed particulate systems characterized by a wide range of packing</div>
<div style="color:rgb(102,97,84);font-size:13px;font-family:Arial,Verdana,sans-serif">fractions. The computational methods used are based on persistence diagrams</div><div style="color:rgb(102,97,84);font-size:13px;font-family:Arial,Verdana,sans-serif">
which allow for clear identification of mathematical properties of force</div><div style="color:rgb(102,97,84);font-size:13px;font-family:Arial,Verdana,sans-serif">landscapes and help their physical interpretation. We find that</div>
<div style="color:rgb(102,97,84);font-size:13px;font-family:Arial,Verdana,sans-serif">using this technique which previously has not been applied to particulate</div><div style="color:rgb(102,97,84);font-size:13px;font-family:Arial,Verdana,sans-serif">
matter, a significant new information can be extracted, going much beyond</div><div style="color:rgb(102,97,84);font-size:13px;font-family:Arial,Verdana,sans-serif">separation into `strong' and `weak' force networks. The proposed approach</div>
<div style="color:rgb(102,97,84);font-size:13px;font-family:Arial,Verdana,sans-serif">describes these networks in a precise and tractable manner, allowing to</div><div style="color:rgb(102,97,84);font-size:13px;font-family:Arial,Verdana,sans-serif">
identify novel features which could be difficult to describe using other</div><div style="color:rgb(102,97,84);font-size:13px;font-family:Arial,Verdana,sans-serif">approaches. We find significant differences between the systems characterized</div>
<div style="color:rgb(102,97,84);font-size:13px;font-family:Arial,Verdana,sans-serif">by varied polydispersity and frictional properties, indicating that the</div><div style="color:rgb(102,97,84);font-size:13px;font-family:Arial,Verdana,sans-serif">
mechanical response of these systems may differ considerably as well.</div><div><br></div>
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</div><br><br clear="all"><div><br></div>-- <br>Dra. Luciana Bruno<br>Departamento de Física e IFIBA-CONICET<br>Facultad de Ciencias Exactas y Naturales<br>Universidad de Buenos Aires.<br>(1428) Ciudad Universitaria,<br>
Ciudad de Buenos Aires, Argentina.<br>TE +54 11 4576 3390 ext 819<br>Fax +54 11 4576 3357<br>email: <a href="mailto:lbruno@df.uba.ar" target="_blank">lbruno@df.uba.ar</a><br><a href="http://www.df.uba.ar/users/lbruno/wordpress/" target="_blank">http://www.gdti.df.uba.ar/</a><div style="display:inline">
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