David Ndzi

Search results

• 2023

  Deep spatial interpolation of rain field for UK satellite networks

  Yang, G., Chen, Z., Ndzi, D., Yang, L., Al-Hassani, A-H., Paul, D., Duan, Z. & Chen, J., 1 Feb 2023, In: IEEE Transactions on Antennas and Propagation. 71, 2, p. 1793-1803 11 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File
  73 Downloads (Pure)
• 2022

  Adaptive machine learning based distributed denial-of-services attacks detection and mitigation system for SDN-enabled IoT^†

  Aslam, M., Ye, D., Tariq, A., Asad, M., Hanif, M., Ndzi, D., Chelloug, S. A., Elaziz, M. A., Al-Qaness, M. A. A. & Jilani, S. F., 31 Mar 2022, In: Sensors. 22, 7, 28 p., 2697.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File
  41 Downloads (Pure)

• Channel and channel subband selection for speaker diarization

  Ahmed, A. I., Chiverton, J. P., Ndzi, D. L. & Al-Faris, M. M., 1 Sept 2022, In: Computer Speech and Language. 75, 20 p., 101367.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • Channels 100%
  • signals 80%
  • Representation 60%
  • errors 60%
  • speech 60%
  43 Downloads (Pure)

• Inline 3D volumetric measurement of moisture content in rice using regression-based ML of RF tomographic imaging

  Almaleeh, A. A., Zakaria, A., Kamarudin, L. M., Rahiman, M. H. F., Ndzi, D. L. & Ismail, I., 5 Jan 2022, In: Sensors. 22, 1, 12 p., 405.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File
  53 Downloads (Pure)
• 2021

  Design and development of stingless beehive air pollutant monitoring system

  Ramli, M. F., Harun, A., Ismail, R. C., Ndzi, D. L., Turner, J. S. C., Farook, R. S. M., Isa, M. N. M. & Murad, S. A. Z., 1 Dec 2021, In: International Journal of Nanoelectronics and Materials. 14, Special Issue InCAPE, p. 265-278 14 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

• Modelling on impact of building obstruction for V2I communication link in micro cellular environment

  Turner, J. S. C., Shahriman, A. B., Harun, A., Murad, S. A. Z., Isa, M. N., Ismail, R. C., Ndzi, D. L., Hashim, M. S. M., Razlan, Z. M., Wan, W. K. & Ramli, M. F., 1 Mar 2021, In: Journal of Physics: Conference Series. 1755, 1, 13 p., 012031.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File
  38 Downloads (Pure)

• Relative localization method of wet spot of grain using array of passive RFID tags

  Azmi, N., Kamarudin, L. M., Mohamed, L., Zakaria, A., Rahiman, M. H. F., Zakaria, S. M. M. S. & Ndzi, D. L., 1 Dec 2021, In: Journal of Physics: Conference Series. 2107, 1, 8 p., 012004.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File
  34 Downloads (Pure)

• Rf-based moisture content determination in rice using machine learning techniques

  Azmi, N., Kamarudin, L. M., Zakaria, A., Ndzi, D. L., Rahiman, M. H. F., Zakaria, S. M. M. S. & Mohamed, L., 8 Mar 2021, In: Sensors. 21, 5, 20 p., 1875.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File
  32 Downloads (Pure)

• Signal propagation modelling for vehicle-to-infrastructure communication under the influence of metal obstruction

  Turner, J. S. C., Shahriman, A. B., Harun, A., Hashim, M. S. M., Razlan, Z. M., Ndzi, D. L., Ismail, R. C., Murad, S. A. Z., Isa, M. N. M., Mohyar, S. N., Ramli, M. F. & Zulkifli, M. K. N., 1 Dec 2021, In: International Journal of Nanoelectronics and Materials. 14, Special Issue InCAPE, p. 127-139 13 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

• Vision based dynamic thermal comfort control using fuzzy logic and deep learning

  Al-Faris, M., Chiverton, J., Ndzi, D. & Ahmed, A. I., 19 May 2021, In: Applied Sciences (Switzerland). 11, 10, 17 p., 4626.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • occupants 100%
  • thermal comfort 83%
  • Thermal Comfort 83%
  • control 50%
  • performance 33%
  103 Downloads (Pure)
• 2020

  Multi-view region-adaptive multi-temporal DMM and RGB action recognition

  Al-Faris, M. M. N., Chiverton, J., Yang, L. & Ndzi, D., 21 Apr 2020, (Early online) In: Pattern Analysis & Applications. 16 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • motion 100%
  • neural networks 75%
  • streams 75%
  • Action Recognition 75%
  • 3D Convolutional Neural Networks 75%
  153 Downloads (Pure)
• 2019

  Deep learning of fuzzy weighted multi-resolution depth motion maps with spatial feature fusion for action recognition

  Al-Faris, M. M. N., Chiverton, J., Yang, L. & Ndzi, D., 21 Oct 2019, In: Journal of Imaging. 5, 10, 25 p., 82.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • motion 100%
  • depth 66%
  • humans 50%
  • maps 50%
  • fuzzy logic 50%
  170 Downloads (Pure)

• Rainfall rate field space-time interpolation technique for North West Europe

  Yang, G., Ndzi, D., Paulson, K. S., Filip, M. & Al-Hassani, A-H., 29 Jul 2019, In: Progress In Electromagnetics Research M. 83, p. 93-107

  Research output: Contribution to journal › Article › peer-review

  Open Access

  • rain 100%
  • space 75%
  • data 50%
  • europe 37%
  • interpolation 25%

• Rain prediction using fuzzy rule based system in north-west Malaysia

  Mohd Safar, N. Z., Ramli, A. A., Mahdin, H., Ndzi, D. & Ku Khalif, K. M. N., 1 Jun 2019, In: Indonesian Journal of Electrical Engineering and Computer Science. 14, 3, p. 1564-1573 10 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File
  59 Downloads (Pure)

• Speaker recognition using PCA-based feature transformation

  Ahmed, A. I., Chiverton, J. P., Ndzi, D. L. & Becerra, V. M., Jul 2019, In: Speech Communication. 110, p. 33-46 14 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • Speaker Recognition 100%
  • pca 40%
  • speech 30%
  • Speech 30%
  • evaluation 20%
  255 Downloads (Pure)

• The impact of spatial-temporal averaging on the dynamic-statistical properties of rain fields

  Yang, G., Ndzi, D., Grimont, B., Paulson, K., Filip, M. & Al-Hassani, A-H., 1 Dec 2019, In: IEEE Transactions on Antennas and Propagation. 67, 12, p. 7505-7517 13 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • Rain 100%
  • rain 100%
  • Parameter 66%
  • Temporal Variation 33%
  • Rainfall 33%
  108 Downloads (Pure)
• 2018

  Ontology-based personalised course recommendation framework

  Ibrahim, M. E., Yang, Y., Ndzi, D., Yang, G. & Almaliki, M., 24 Dec 2018, (Early online) In: IEEE Access.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • Ontology 100%
  • recommendations 71%
  • Filtering 42%
  • mapping 42%
  • User 28%
  1449 Downloads (Pure)
• 2017

  Analysis of signal propagation in an experiment room with epoxy covered floor for wireless sensor network applications

  Harun, A., Murad, S. A. Z., Ramli, M. F., Kamarudin, L. M., Ndzi, D. L., Hambali, N. A. M. A., Mohyar, S. N. & Isa, M. N., 1 Feb 2017, In: MATEC Web of Conferences. 97, 01041.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • signals 100%
  • floors 62%
  • applications 50%
  • margins 50%
  • sensors 37%
  100 Downloads (Pure)
• 2016

  An adaptive people counting system with dynamic features selection and occlusion handling

  Al-Zaydi, Z., Ndzi, D. L., Yang, Y. & Kamarudin, M. L., Aug 2016, In: Journal of Visual Communication and Image Representation. 39, p. 218-225 8 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • errors 100%
  • datasets 100%
  • people 100%
  • levels 66%
  • comparative evaluations 66%
  547 Downloads (Pure)

• A robust multimedia surveillance system for people counting

  Al-Zaydi, Z., Ndzi, D., Kamarudin, L. M., Zakaria, A. & Shakaff, A. Y. M., Dec 2016, In: Multimedia Tools and Applications. 75, 23, p. 23777–23804 29 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • algorithms 100%
  • Algorithms 77%
  • datasets 44%
  • Scale-Invariant Feature Transform 44%
  • accuracy 33%
  460 Downloads (Pure)

• Sensitivity analysis of AODV protocol regarding forwarding probability

  Kanakaris, V., Ndzi, D. L. & Papakostas, G. A., Feb 2016, In: Optik - International Journal for Light and Electron Optics. 127, 3, p. 1016-1021

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • probability 100%
  • Probability 80%
  • Evaluation 60%
  • evaluation 60%
  • Messages 40%
  248 Downloads (Pure)

• Simulation and analysis of LEACH for wireless sensor networks in agriculture

  Kamarudin, L. M., Ahmad, B., Ndzi, D. L., Zakaria, A., Kamarudin, K. & Ahmed, M. E. E. S., 31 May 2016, In: International Journal of Sensor Networks. 21, 1, p. 16-26 11 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • leaching 100%
  • sensors 75%
  • applications 50%
  • simulation 50%
  • environment 50%
  776 Downloads (Pure)
• 2015

  Stingless bee colony health sensing through integrated wireless system

  Harun, A., Zaaba, S. K., Kamarudin, L. M., Zakaria, A., Farook, R. S. M., Ndzi, D. L. & Shakaff, A. Y., Sept 2015, In: Jurnal Teknologi. 77, 28, p. 85-90

  Research output: Contribution to journal › Article › peer-review

  Open Access

  • bees 100%
  • Stingless Bee 90%
  • colonies 54%
  • data 36%
  • sensors 36%

• The study of vegetation effect on wireless streaming video for agricultural monitoring

  Ramli, M. F., Kamarudin, L. M., Ndzi, D. L., Harun, A., Turner, J. S. C., Hassan, N., Shakaff, A. Y. M., Jaafar, M. N. & Zakaria, A., Aug 2015, In: Jurnal Teknologi. 76, 12, p. 53-58

  Research output: Contribution to journal › Article › peer-review

  Open Access

  • Video Streaming 100%
  • Streaming Video 50%
  • Wireless Channel 50%
  • Throughput 25%
  • Wireless Network 25%
• 2014

  Classification of domestic burning smell using covariance k- nearest neighbour algorithm for early fire detection application

  Andrew, A. M., Kamarudin, K., Mamduh, S. M., Shakaff, A. Y. M., Zakaria, A., Adom, A. H., Ndzi, D. L. & Ragunathan, S., Jan 2014, In: Chemical Engineering Transactions. 40, p. 271-276

  Research output: Contribution to journal › Article › peer-review

  Open Access

  • fires 100%
  • Fires 72%
  • death 36%
  • smokes 36%
  • Smoke 36%

• Wireless sensor network coverage measurement and planning in mixed crop farming

  Ndzi, D. L., Harun, A., Ramli, F. M., Kamarudin, M. L., Zakaria, A., Shakaff, A. Y. M., Jaafar, M. N., Zhou, S. & Farook, R. S., 1 Jul 2014, In: Computers and Electronics in Agriculture. 105, p. 83-94 12 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • crops 100%
  • sensors 83%
  • Networks 83%
  • applications 33%
  • environment 33%
  450 Downloads (Pure)
• 2013

  Antenna positioning impact on wireless sensor networks deployment in agriculture

  Harun, A., Ramli, M., Ndzi, D., Kamarudin, L., Shakaff, A., Jaafar, M. & Zakaria, A., 2013, In: Australian Journal of Basic and Applied Sciences. 7, 5, p. 55-60 6 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • antennas 100%
  • Antennas 62%
  • Deployment 50%
  • sensors 37%
  • losses 37%
  133 Downloads (Pure)

• Distributed monitoring system based on weighted data fusing model

  Shbib, R., Zhou, S., Ndzi, D. L. & Alkadhimi, K. I. H., Mar 2013, In: American Journal of Social Issues and Humanities . 3, 2, p. 53-62

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • data 100%
  • people 100%
  • accuracy 66%
  • vision 66%
  • Accuracy 66%
  94 Downloads (Pure)
• 2012

  Analysis of successes and failures with a tele-operated mobile robot in various modes of operation

  Sanders, D., Stott, I., Robinson, D. & Ndzi, D., Oct 2012, In: Robotica. 30, 6, p. 973-988

  Research output: Contribution to journal › Article › peer-review

  • robots 100%
  • Robot 71%
  • failures 28%
  • environment 28%
  • Mobile Robot 28%

• A new RREQ message forwarding technique based on Bayesian probability theory

  Kanakaris, V., Ndzi, D., Ovaliadis, K. & Yang, L., 23 Oct 2012, In: Eurasip Journal on Wireless Communications and Networking. 2012, 318

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • routing 100%
  • distance 69%
  • vectors 69%
  • Distance Vector 69%
  • demand 61%
  199 Downloads (Pure)

• A proactive personalised mobile recommendation system using analytic hierarchy process and Bayesian network

  Yang, L., Yeung, K. & Ndzi, D., Sept 2012, In: Journal of Internet Services and Applications. 3, 2, p. 195-214 20 p.

  Research output: Contribution to journal › Article › peer-review

  • recommendations 100%
  • information 75%
  • User 62%
  • Contexts 62%
  • Bayesian Networks 37%

• Detecting risk of failure in a powered wheelchair sensor system using artificial neural networks

  Sanders, D. & Ndzi, D., 2012, In: Journal of Intelligent Mobility. 15, 1, p. 272-273

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • Wheelchair 100%
  • data 66%
  • sensors 33%
  • risks 33%
  • neural networks 33%
  46 Downloads (Pure)

• Improving automatic robotic welding in shipbuilding through the introduction of a corner-finding algorithm to help recognise shipbuilding parts

  Sanders, D., Tewkesbury, G., Ndzi, D., Gegov, A., Gremont, B. & Little, A., Jun 2012, In: Journal of Marine Science and Technology . 17, 2, p. 231-238

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • information 100%
  • images 100%
  • shape 100%
  • welds 100%
  • Programs 100%
  372 Downloads (Pure)

• Signal propagation analysis for low data rate wireless sensor network applications in sport grounds and on roads

  Ndzi, D., Arif, M., Shakaff, A., Ahmad, M., Harun, A., Kamarudin, L., Zakaria, A., Ramli, M. & Razalli, M., 2012, In: Progress in Electromagnetics Research. 125, p. 1-19 19 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • roads 100%
  • Wireless Sensor Network 100%
  • range 66%
  • signals 66%
  • courts 66%
  120 Downloads (Pure)

• Signal propagation in aquaculture environment for wireless sensor network applications

  Harun, A., Ndzi, D., Ramli, M., Shakaff, A., Ahmad, M. & Yang, Y., Sept 2012, In: Progress in Electromagnetics Research. 131, p. 477-494 18 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • signals 100%
  • Wireless Sensor Network 100%
  • environment 66%
  • Environment 66%
  • sensors 50%
  239 Downloads (Pure)

• Vegetation attenuation measurements and modeling in plantations for wireless sensor network planning

  Ndzi, D., Kamarudin, L., Mohammad, E., Zakaria, A., Ahmad, R., Fareq, M., Shakaff, A. & Jafaar, M., 2012, In: Progress in Electromagnetics Research B. 36, 36, p. 283-301 19 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • Model 100%
  • Models 100%
  • Vegetation 55%
  • vegetation 55%
  • Attenuation 33%
  250 Downloads (Pure)
• 2011

  An FPGA-based adaptable 200 MHz bandwidth channel sounder for wireless communication channel characterisation

  Ndzi, D., Stuart, K., Toautachone, S., Yang, L. & Dunn, V., 2011, In: International Journal of Reconfigurable Computing. 2011, p. 14pp 14 p.

  Research output: Contribution to journal › Article › peer-review

  File

  • Sounding 100%
  • Field Programmable Gate Arrays 75%
  • Measurement 50%
  • Waveform 50%
  • Communication Channel 50%
  151 Downloads (Pure)

• Applications of MANET routing protocols in sensor network

  Kanakaris, V., Ndzi, D. & Ovaliadis, K., Dec 2011, In: International Journal of Research and Reviews in Ad Hoc Networks. 1, 4, p. 88-92 5 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • power 100%
  • sensors 100%
  • routing 100%
  • performance 75%
  • Power Consumption 75%
  212 Downloads (Pure)

• Wideband sounder for dynamic and static wireless channel characterisation: urban picocell channel model

  Ndzi, D., Stuart, K., Toautachone, S., Vuksanovic, B. & Sanders, D., 4 Feb 2011, In: Progress in Electromagnetics Research. 113, p. 285-312 28 p.

  Research output: Contribution to journal › Article › peer-review

  File

  • Picocells 100%
  • dynamics 100%
  • Channel Model 75%
  • signals 75%
  • Measurement 50%
  114 Downloads (Pure)

• Wideband sounder for dynamic and static wireless characterisation: urban picocell channel model

  Ndzi, D., Stuart, K., Toautachone, S., Vuksanovic, B. & Sanders, D., 4 Feb 2011, In: Progress in Electromagnetics Research. 113, p. 285-312 28 p.

  Research output: Contribution to journal › Article › peer-review

  File

  • Picocells 100%
  • dynamics 100%
  • Channel Model 75%
  • signals 75%
  • Measurement 50%
  54 Downloads (Pure)
• 2010

  Ad-hoc networks energy consumption: a review of the ad-hoc routing protocols

  Kanakaris, V., Ndzi, D. & Azzi, D., 2010, In: Journal of Engineering Science and Technology Review (JESTR). 3, 1, p. 162-167 6 p.

  Research output: Contribution to journal › Article › peer-review

  File

  • Networks 100%
  • Ad Hoc Network 75%
  • mobility 75%
  • Network Simulator 50%
  • Evaluation 50%
  323 Downloads (Pure)

• A robotic welding system using image processing techniques and a CAD model to provide information to a multi-intelligent decision module

  Sanders, D., Lambert, G., Graham-Jones, J., Tewkesbury, G., Onuh, S., Ndzi, D. & Ross, C., 2010, In: Assembly Automation. 30, 4, p. 323-332 10 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • information 100%
  • image processing 75%
  • Modules 75%
  • shape 50%
  • welds 50%
  285 Downloads (Pure)

• Spatial and temporal variation of wideband indoor channels

  Ndzi, D., Savage, N. & Gremont, B., 2010, In: International Journal of Antennas and Propagation. 2010, p. 1-11 11 p.

  Research output: Contribution to journal › Article

  Open Access

  File

  • variations 100%
  • Channels 100%
  • people 75%
  • indoors 75%
  • algorithms 50%
  156 Downloads (Pure)
• 2009

  Improving AODV performance using dynamic density driven route request forwarding

  Kanakaris, V., Ndzi, D. & Ovaliadis, K., Jul 2009, In: International Journal of Wireless & Mobile Networks (IJWMN). 3, 3, p. 407-415 9 p.

  Research output: Contribution to journal › Article › peer-review

  File

  • Networks 100%
  • Route Request Packet 50%
  • Forwarding 50%
  • density 50%
  • routing 50%
  98 Downloads (Pure)

• Using integrated IT systems to minitor decay in website performance following individual improvements

  Ramlall, S., Sanders, D., Tewkesbury, G., Powell, H. & Ndzi, D., 2009, In: Journal of Computing in Systems and Engineering. 10, p. 167-170

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • Websites 100%
  • User 100%
  • websites 100%
  • sales 100%
  • Tracking System 50%
  62 Downloads (Pure)
• 2008

  Improving customer generation by increasing website performance and integrating IT systems

  Ramlall, S., Sanders, D., Powell, H. & Ndzi, D., 2008, In: Journal of Computing in Systems and Engineering. 9, 5, p. 148-152

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • Websites 100%
  • websites 100%
  • Design 80%
  • design 80%
  • sales 80%
  88 Downloads (Pure)
• 2005

  Experimental analysis of microscale rain cells and their dynamic evolution

  Enjamio, C., Vilar, E., Redano, A., Perez-Fontan, F. & Ndzi, D., 2005, In: Radio Science. 40, 3, p. 19pp 19 p.

  Research output: Contribution to journal › Article › peer-review

  • rain 100%
  • Area 75%
  • Network 75%
  • Rainfall 50%
  • Microbalance 50%

• Short-scale diversity in a dynamic rain fade environment

  Enjamio, C., Vilar, E., Ndzi, D. & Perez-Fontan, F., 2005, In: International Journal of Satellite Communications and Networking. 23, 2, p. 143-152 10 p.

  Research output: Contribution to journal › Article › peer-review

  • Site 100%
  • rain 100%
  • Rain 80%
  • Attenuation 60%
  • attenuation 60%
• 2003

  Radio wave propagation through vegetation: factors influencing signal attenuation

  Savage, N., Ndzi, D., Seville, A., Vilar, E. & Austin, J., 2003, In: Radio Science. 38, 5, p. 14pp 14 p.

  Research output: Contribution to journal › Article › peer-review

  • Attenuation 100%
  • Vegetation 100%
  • vegetation 100%
  • attenuation 100%
  • Model 87%
• 2001

  Wideband transhorizon channel characterization

  Ndzi, D., Austin, J. & Vilar, E., 2001, In: Radio Science. 36, 5, p. 965-980 16 p.

  Research output: Contribution to journal › Article › peer-review

  • Characterization 100%
  • Broadband 100%
  • Signal Level 100%
  • Delay Spread 100%
  • data 100%