[1]School of Mathematics and Com- puter Science;
Anhui Normal University;
Wuhu 241003;
China;
[1]School of Mathematics and Com- puter Science;
Anhui Normal University;
Wuhu 241003;
China;
[2]Department of Electrical and Computer Engineering;
New Jersey Institute of Technology;
Newark;
NJ 07102;
USA and also with the Renewable Energy Research Group;
King Abdulaziz University;
Jeddah;
21589;
Saudi Arabia;