November 2011

A novel electrical model to an antenna array

  In this paper, an electrical model is developed to represent the input admittance of an antenna array with a finite number of elements. This model consists of an RLC bock component to represent the input admittance of each elementary antenna element and a capacity component to represent different degrees of antenna coupling effects. The equations based on cavity model are developed to represent physical...

Author(s): A. Ferchichi, N. Fadlallah and A. Gharssallah

November 2011

Electromyographic (EMG) signal to joint torque processing and effect of various factors on EMG to torque model

  This study present electromyographic (EMG) signal to torque model and investigates the effects of various factors on EMG signal and EMG to torque model. Pre-processing techniques are applied on EMG signal in order to remove the DC offset, 60 Hz noise and to estimate the EMG amplitude. The estimated EMG amplitude is then mapped to joint torque using a new non-linear equation. This equation uses some...

Author(s): Khalil Ullah, Asif Khan, Ihtesham-ul-Islam and Mohammad A. U. Khan

November 2011

Performance evaluation of bamboo with morter and concrete

  Bamboo has remarkable properties as a construction material, being both light weight and extremely strength and durable. Moreover it grows all over the Bangladesh; a South Asian lower-middle income country where rural people is the majority of the total population. Bamboo having considerable tensile and compressive strength as a construction material is used widely in Bangladesh. But the main problem that it...

Author(s): H. M. A. Mahzuz, Mushtaq Ahmed, Md. Ashrafuzzaman, Rejaul Karim and Raju Ahmed