International Journal Of Scientific Engineering And Technology

 Journal

 Development Of A Microcontroller Based Count Down Time Reminder With Visual And Aural Indicators

 Ponnle A. A., Adedeji K.B. And Udekwe C.N.

 2014

Time management is a very important factor which partly determines the success or failure of students during any written examination.

 

 International Journal Of Science And Research (IJSR)

 Journal

 Development Of A GUI For Hybrid (DES-RSA) Data Encryption And Decryption For Transmission Of Biomedical Data

 Adedeji Kazeem Bolade, Ponnle Akinlolu Adediran

 2014

Most biomedical data are strictly confidential, hence the need to protect them from an unauthorized party. We had earlier developed and implemented a hybrid cryptography technique that uses a combination of Data Encryption Standard (DES) and Rivest Shamir Adleman (RSA) Algorithms. The DES algorithm was used to encrypt the data while the RSA algorithm was used to transfer DES secret key securely. This paper presents the development of a graphical user interface (GUI) for the developed hybrid technique. The interface was implemented in C#. The developed hybrid technique provides higher throughput, better encryption speed, and CPU power consumption usage. 

 Elsevier

 Journal

 Suppression Of Grating Lobe Artifacts In Ultrasound Images Formed From Diverging Transmit Beams By Modulation Of Receiving Beams

 Ponnle A., Hasegawa H., And Kanai H.

 2013

In linear array transducers, owing to regular spacing of the array elements, grating lobes exist in transmission and reception. In ultrasonic imaging involving the use of diverging (unfocused) transmitting beams and steered receiving beams by linear transducer arrays, aperture apodization and spatial combination of steered receiving beams from multiple transmissions are not sufficient to suppress receive-grating lobe artifacts. To further suppress receive-grating lobe artifacts in reconstructed B-mode images, we propose a technique of modulating the receiving beams by a factor that is governed by the envelope of a corresponding signal, which is formed by filtering the receiving beam with a zero-phase low-pass filter with a cut-off frequency that is determined by the receiving beam steering angle. This technique suppressed receive-grating lobe artifacts without significant loss in spatial resolution in offline reconstructed B-mode images from simulation, phantom and in vivo imaging of the carotid artery. In a simulation of point scatterers, a relative reduction in grating lobe artifacts of 40 dB was realized in images from diverging beam scanning. 

 Unpublished

 Disertations

 Imaging Of Transverse Cross Section Of Carotid Artery Using Diverging Transmit Beams From A Linear Array Ultrasonic Transducer With Multiple Steered Receive Beamforming

 Ponnle A.A.

 2011

Ultrasonic transverse cross-sectional imaging of carotid artery using conventional linear imaging method is very difficult. 

 ASSUMPTION UNIVERSITY, THAILAND

 Journal

 Reliability Worth Assessment Of Electric Power Utility In Nigeria: Residential Customer Survey Results

 Popoola J.J., Ponnle, A.A., And Ale, T.O.

 2011

This paper presents the results of a customer survey conducted in some selected service areas of the Power Holding Company of Nigeria (PHCN) - the power utility provider in Nigeria. The aim of the study was to quantify the reliability worth of electricity supply in Nigeria. The study was carried out in two phases. In the first phase, primary data were garnered using a well-structured questionnaire about quality of power supply, its failure rate and inconveniences experienced by customers as most impacts of power interruptions to residential users are related to inconveniences. In the second phase, data related to condition of the distribution equipment as well as the distribution network design and planning were obtained by direct inspection of some of the studied areas by the authors. Descriptive statistics such as percentages, means, frequencies and bar chat were used in the analysis of data obtained from the questionnaire. The study showed that the quality of electric power supply in the country is below 10% and that the power supply is generally unreliable. Also from the responses from the customers’ survey, it was found that the power supply in Nigeria is seasonal dependent with better power availability in wet season than dry season. In addition, the study also revealed the need for both re-planning and re-designing of the nation’s distribution network as the present design gives no room for expansion. The paper was concluded with suggestions on how to improve both the quality and reliability of electricity supply in the country. 

 NIL

 Journal

 Multi Element Diverging Beam From A Linear Array Transducer For Transverse Cross Sectional Imaging Of Carotid Artery: Simulations And Phantom Vessel Validation

 Ponnle A., Hasegawa H., And Kanai H.

 2011

Transverse cross sectional imaging of the intima–media complex of the carotid arterial wall is difficult to obtain by conventional linear scanning. The angular widths of imaged regions of the anterior and posterior walls are limited. In this study, multi element diverging beam from a linear array transducer was investigated by simulations and experiments. B-mode image was reconstructed, using combinations of multi angle receiving beams from multiple transmissions per frame. The images obtained by the proposed method from simulations and silicone-rubber tube phantom showed an increase in the angular width over that in the case of conventional linear scanning. Also, images were investigated for sub aperture sizes of 36, 56, and 96 elements with different beam-spread angles. On the basis of the results of the present study, the sub aperture size of 36 elements and beam-spread angle of 90 degrees are recommended for achieving the optimum results for this application in in-vivo imaging 

 NIL

 Conferenceproceeding

 Carotid Artery Imaging In Transverse Plane By Multiple Steered Receiving Beams From Diverging Transmit Beam

 Ponnle A., Hasegawa H., And Kanai H.

 2011

NIL

 

 NIL

 Conferenceproceeding

 Modulation Of Receiving Beams For Suppression Of Grating Lobe Artifacts In Ultrasound Images

 Ponnle A., Hasegawa H., And Kanai H.

 2011

NILL 

 NIL

 Conference

 Optimization Of Parameters Of Multi Element Diverging Beam For Transverse Cross Sectional Imaging Of Carotid Artery

 Ponnle A., Hasegawa H., And Kanai H.

 2011

Ultrasound imaging of the intima-media complex of the carotid arterial wall in the transverse cross-sectional plane is very difficult using conventional linear scanning as the extent of the arterial wall that are clearly imaged is very limited. We proposed the use of multi-element diverging beam from a linear array transducer with scanning in a linear sequential fashion. A B-mode image was reconstructed from combinations of many steered receiving beams from multiple transmissions per frame. Using this method, both in simulations and silicone-rubber tube phantom experiments, the extent of the clearly imaged region is wider than that of conventional linear scanning. Considering the carotid arterial region in adults, optimum transmit-parameters for the diverging beam was determined by investigating image resulting from simulations and phantom experiments for beams of different parameters. Transmit/receive sub-aperture size of 36/96 elements and beam-spread angle of 90 degrees are recommended for in vivo experiments. 

 NIL

 Conference

 Suppression Of Receive Grating Lobe Artifacts In Images Formed From Wide Diverging Transmit Beams By Modulation Of Steered Receiving Beams

 Ponnle A., Hasegawa H., And Kanai H.

 2011

NIL