<p class="MsoNormal" style="text-align:justify;line-height:150%"><span style="font-family:&quot;Times New Roman&quot;,serif">Legesse Lemecha Obsu(Ph.D.) is a
full-time lecturer, associate professor of mathematics&nbsp; at College of Applied Natural Science,
Department of Applied Mathematics.</span><o:p></o:p></p>                      
                    