Abdulqudos Y. Alnahari, Noor Azurati Ahmad, Yusnaidi Md Yusof. “Modified Weighted Centroid Algorithm for Indoor and Outdoor Positioning Using Wireless Sensors Network“. International Journal of Advanced and Applied Sciences, Vol. 5, No. 2, 2018. pp. 33-36. DOI: 10.21833/ijaas.2018.02.006.
This paper shows how to allocate a blind node in a wireless sensor network (WSN) using the proposed WCL approach and shows how the enhancement of the algorithm made better accuracy with mean square error, MSE, of 64.5cm for indoor positioning and 123.0cm for outdoor positioning. .


Nor’asnilawati Salleh, Salwani Mohd Daud, Sharizal Fadlie Sabri, Noor Azurati Ahmad, Sya Azmeela Shariff, Yusnaidi Md Yusof, Mohamad Zulkefli Adam. “Enhancing Temperature Control Method of Thermal Vacuum Chamber for Satellite Testing Using Optimization Algorithm: A Review“. Jurnal Teknologi, Vol. 78, No. 5-7, 2016. pp. 1-6. eISSN: 2180-3722.
This paper studies a comparison of optimization algorithms to enhance temperature control method of thermal vacuum chamber (TVC) for satellite testing. The gaseous nitrogen (GN2) is used in TVC to control the temperature requirement and proportional integral derivative (PID) controller is adopted in order to realize it. From the review that has been done, the genetic algorithm (GA) is believed to be the best method that can be implemented into the temperature control system of TVC.

Atabak Kheirkhah, Salwani Mohd Daud, Noor Azurati Ahmad, Suriani Mohd Sam, Hafiza Abas, Sya Azmeela Shariff, Yusnaidi Md Yusof. “Some Intriguing High-Throughput DNA Sequence Variants Prediction Over Protein Functionality“. Jurnal Teknologi, Vol. 78, No. 6-4, 2016. pp. 1-6. eISSN: 2180-3722.
This paper intends to review computational methods and high throughput automated tools for precisely prediction various functionalities of uncharacterized proteins based on their desired DNA sequence information alone. Then proposes a hybrid weighted network and Genetic Algorithm to improve prediction purpose. n this review, we are to discuss each of them, with a different focus on operational algorithms and how to increase the accuracy of DNA sequence variants prediction.

International Conferences


Abdulqudos Y. Alnahari, Noor Azurati Ahmad, Yusnaidi Md Yusof. “Wireless Sensor Networks Based Outdoor and Indoor Positioning System (WOIPS) Featured with IoT“, Proceedings of International Conference on Imaging, Signal Processing and Communication (ICISPC 2017), pp. 153-157, July 2017. pp: 153-157. DOI: 10.1145/3132300.3132332.
This paper shows a study on developing a WSN-based outdoor and indoor positioning system (WOIPS) with MSE of 64.5cm for indoor positioning and 123.0cm for outdoor positioning and enhanced with IoT feature and the used algorithm is based on Weighted Centroid Localization.


Yusnaidi Md Yusof, A.K.M. Muzahidul Islam, Sabariah Baharun, Mohd Ghazali Hamza, Kamarul Ariffin Abdul Basit, Noor Azurati Ahmad. “An Environmental Sensing Experiment Using IEEE 802.15.4 Radio Hop of the WSN TelosB Motes“, 1st International Conference on Advanced Information and Communication Technology (ICAICT 2016). CIU, Chittagong, Bangladesh, 16-17 May 2016.
This paper demonstrates the experience explored and the observation of temperature sensing using the IEEE 802.15.4 information hopping from a sensing mote to the base station. The environmental readings are furthered reprocessed and displayed on the base station screen for analysis. The study outcome and the experience gathered from the experiment are important to help the researchers to incorporate the information display, with the use of Wireless Embedded Internet’s IPv6 and 6LoWPAN standard, to be globally accessible anywhere and at anytime.

Yusnaidi Md Yusof, A.K.M. Muzahidul Islam, Sabariah Baharun.”A Route Discovery and Selection Using TinyOS Reactive Routng in Motes Simulation“, 1st International Conference on Advanced Technology and Applied Sciences (ICATAS 2016). UTM, Kuala Lumpur, Malaysia. 6-7 Sept. 2016.
In this paper, we present our current works on observing a reactive routing using the Tymo routing protocol in TinyOS. We further examine the basics route discovery and maintenance of the protocol on nodes simulation particularly of telosb motes which we have programmed as source, target, and intermediate nodes. Our main aim is to observe basic routing behavior along the routing process, for example, data queue/dequeue, and routing table construction in the context of route construction.

Iyad H Alshami, Noor Azurati Ahmad, Shamsul Sahibuddin, Yusnaidi Md Yusof. “The Effect of People Presence on WLAN RSS is Governed by Influence Distance“, 3rd International Conference on Computer & Information Sciences (ICCOINS 2016). Kuala Lumpur Convention Centre, Kuala Lumpur, 15-17 August 2016. pp: 197-202. DOI: 10.1109/ICCOINS.2016.7783214.
Recently, there is high demand for implementing Location Based Services (LBS) indoor. Many technologies and methods have been investigated for this issue since GPS could not prove accurate positioning indoor. Although WLAN-fingerprinting is considered as one of the most accurate IPS method, its accuracy vulnerable to WLAN RSS fluctuation. This fluctuation occurs due to the physical obstacles presence. Many research papers highlighted people’s presence near to mobile device (MD) between it and Access point (AP) as RSS attenuate factor, but it is hard to find a research paper investigated this attenuation factor as in the case of walls and ceilings. People presence effect was estimated in previous work as -5dBm on closed distance from MD but it still need a lot of investigation. This paper raises the existence of people presence influence distance as a new concept related to people presence effect.

Noriani Mohammed Noor, Kamilia Kamardin, Suriani Mohd Sam, Hafiza Abas, Nilam Nur Amir Sjarif, Yusnaidi Md Yusof, Azri Azmi. “A Study of Authentication Protocols for Security of Mobile RFID (M-RFID) System“, International Conference on Advances in Electrical, Electronic and Systems Engineering (ICAEES 2016). Putrajaya, Malaysia. 14-16 November 2016. pp: 339-343. DOI: 10.1109/ICAEES.2016.7888065.
M-RFID inherits all issues that exist in the traditional RFID system, for example, replay attack, denial of service, spoofing, traceability and impersonation. However the severity of these issues intensifies because M-RFID reader is used in the wireless environment with agility in movement and greater scanning zone. Therefore, many security protocols developed to support the security and privacy problems arise in M-RFID systems.

Nur Azua Rahim, Yazriwati Yahya, Siti Sophiayati Yuhaniz, Suriani Mohd Sam, Yusnaidi Yusof. “The Development of RUPiSM: A Hybrid Software Development Methodology Framework“, Proceedings of the 4th International Conference on Artificial Intelligence and Computer Science (AICS 2016). Langkawi, Malaysia, 28-29 November 2016. pp: 22-32. e-ISBN 978-967-0792-11-8.
This paper proposes a hybrid SDM framework named RUPiSM. It is established by two well-known practice approaches, Rational Unified Process (RUP) and Scrum methodology, in order to emphasise the definite strengths; documentation, team communication, customer involvement, and product quality and at the same time to complement each other. It is achieved by exercising agile workflows into the preserving RUP incremental Lifecycle Iteration Pattern, while Sprints are implemented in Construction phase and the ordinary flow is applied in the rest of the phases.

Mohd. Ghazali Hamza, Liza A. Latiff, Yusnaidi Md Yusof, Yusaini H. Mohamed, M. F. Camara. “Statistical Prediction Model of Rain and Dust Storm Worst Month in Microwave-Millimeter Wave Band“, 1st International Conference on Advanced Information and Communication Technology (ICAICT 2016). CIU, Chittagong, Bangladesh, 16-17 May 2016.
In this paper, a new method of calculation of worst month in the statistical model has been developed for use in the rain and dust storm to predict the probability of exceedance are presented. eover, formula for prediction of the worst- month long-term statistics for different weather induced propagation impairments was developed. The main contribution of this study is to assist in the design of both terrestrial and space radio links using frequencies above 10 GHz in the range of microwave and millimeter wave bands.


Yusnaidi Md Yusof, A.K.M. Muzahidul Islam, Sabariah Baharun. “An Experimental Study of WSN Transmission Power Optimisation Using MICAz Motes“, 3rd International Conference on Advances in Electrical Engineering (ICAEE 2015). IUB, Dhaka, Bangladesh, 17-19 December 2015. DOI: 10.1109/ICAEE.2015.7506826. 2nd Best Paper Award.
Adjusting nodes positioning to satisfy the needs of network connectivity and power conservation in wireless sensor networks (WSN) is not a trivial task. Too far node distance may result in unreachable transmission while too near node distance not necessarily guarantee nodes connection. By knowing an acceptable distance range to position nodes in the networks, it can greatly help researchers to better configure settings of WSN environment, while reducing precision of readings between real WSN testbed and the simulation counterpart. This paper demonstrates a real implementation of transmission power control to assist the decision-making on nodes positioning to be used in a sensor network communication. The implementation of the study is done using the MICAz motes with a nesC programming in TinyOS in an indoor environment. Our findings suggest that to assure network connectivity, motes must not be located more than 1.18 metres distance when they are placed on the floor building and not more than 2.37 metres distance when they are situated about one metre above the floor building. Our results also indicates that the maximum length the signals can travel using maximum power 0 dBm is merely about six metres long.

I’m glad you’re here. Let’s collaborate a research paper.

Drop me an email at:

Knowing worth sharing.

Yusnaidi, UTM

From The Blog

How to install TinyOS 2.1.2 in Mac OSX El Capitan

How to install TinyOS 2.1.2 in Mac OSX El Capitan

How to install TinyOS-2.1.2 on Mac OSX EI CapitanI got this works for me! There are many settings to get the TinyOS 2.1.2 up and running in the Mac machine. And the one I had here I had manage it done successfully on my Mac OSX El Capitan machine. Possibly, we can get...

How to install TinyOS 2.1.1 on Ubuntu 14.0.4 32 bit

How to install TinyOS 2.1.1 on Ubuntu 14.0.4 32 bit

How to install TinyOS-2.1.1 on Ubuntu 14.0.4 LTS 32-bitEven TinyOS has been updated to version 3 but in terms of simulation, I found few limitations hindered one to simulate particularly on micaz platform. I have been searching all over the web and other references...

How to Install TinyOS-2.1.1 on VM Ubuntu

How to Install TinyOS-2.1.1 on VM Ubuntu

How to install TinyOS-2.1.1 on Ubuntu 14.04.5 LTS 32-bit VirtualBox VMThe recent TinyOS 3 version has limitation on supporting simulation. Therefore, to leverage the use of TOSSIM, the built-in TinyOS simulator, researchers has to rely on the backdated version of the...

Install TinyOS-2.1.1: The Easiest Way

Install TinyOS-2.1.1: The Easiest Way

Install TinyOS-2.1.1: The Easiest WayEither you are using Windows, or Mac, you can install and straight away start to use Tinyos-2.1.1 on Ubuntu 14.04.5 LTS-32-bit, the EASIEST way! Simply download the ova file below and import it in your VirtualBox VM:...

Experienced Share: Installing CTP-Castalia on OMNeT++

Experienced Share: Installing CTP-Castalia on OMNeT++

Experienced Share: Install CTP-Castalia on OMNeT++I have recently researched on tree routing protocol in WSN. I had analysed the CTP routing protocol under TinyOS's nesC programming, however, due to some limitations the built-in TOSSIM simulator has to offer on energy...

In the Name of God for Mankind. Kerana Tuhan Untuk Manusia.

Universiti Teknologi Malaysia

Never underestimate yourself.

Yusnaidi Md Yusof

Speak good or remain silent.

Prophet Muhammad ﷺ

No two things have been than knowledge and patience.

Prophet Muhammad ﷺ

Fall seven times, stand up eight.

Japanese Proverb

You can't learn in school what the world is going to do next year.

Henry Ford

Stay hungry, stay foolish.

Steve Jobs

You don't have to see the whole staircase, just take the first step.

Martin Luther King

Design is not just what it looks like and feels like. Design is how it works.

Steve Jobs

I want to put ding in the universe.

Steve Jobs

Rule No. 1: Never lose money. Rule No. 2: Never forget rule No. 1.

Warren Buffett

You only have to do a very few things right in your life so long as you don't do too many things wrong.

Warren Buffett

Someone is sitting in the shade today because someone planted a tree a long time ago.

Warren Buffett

We enjoy the process far more than the proceeds.

Warren Buffett

I don't look to jump over 7-foot bars: I look around for 1-foot bars that I can step over.

Warren Buffett

Price is what you pay. Value is what you get.

Warren Buffett

The key is not to prioritize what's on your schedule, but to schedule your prioritizes.

Stephen Covey

Live out your imagination, not your history.

Stephen Covey

The main thing is to keep the main thing the main thing.

Stephen Covey

Happiness is not something you postpone for the future; it is something you design for the present.

Jim Rohn

Mens et manus. Mind and Hand.

Massachusetts Institute of Technology

Veritas. Truth.

Harvard University

Hinc lucem et pocula sacra. From this place, we gain enlightenment and precious knowledge.

Cambridge University

Dominus Illuminatio Mea. The Lord is my Light.

Oxford University

Die Luft der Freiheit weht. The Wind of Freedom Blows.

Stanford University

Fiat lux. Let There be Light.

University of California, Los Angeles

Zukunft denken. Thinking the Future.

RWTH Aachen University

mens agitat molem. Coat of Arms.

Newcastle University

Dei Sub Numine Viget. Under the Protection of God She Flourishes.

Princeton University

ज्ञानम् परमम् ध्येयम्. Knowledge is the Supreme Goal.

Indian Institute of Technology, Bombay

自强不息、厚德载物. Self-Discipline and Social Commitment.

Tsinghua University

Takuetsu-sei o hakken suru. Discover Excellence.

The University of Tokyo

Dare to Reach the Highest.

National University of Singapore

اقْرَأْ بِاسْمِ رَبِّكَ الَّذِي خَلَقَ Read! In the name of your Lord Who created.

King Abdulaziz University

Наука есть ясное познание истины, просвещение разума, Science is clear understanding of truth, enlightenment of the mind.

Moscow State University

Naturam Primum Cognoscere Rerum, First to learn the nature of things.

Australian National University

Discipline is the bridge between goals and accomplishment.

Jim Rohn

You don't get paid by the hour. You get paid for the value you bring to the hour.

Jim Rohn

My number one piece of adive is: You should learn how to program.

Mark Zuckerberg

If you get tired, learn to rest, not to quit.


Let's Start Something new

"Two are Better Than One". I believe Bigger Mind Sparks Bigger Idea. Let's be a Team, because we are already a Family. Let's talk research. Let's share research. I would loved to learn new things, explore new possibilities, collaborate new research, improve knowledge skills, and learn from YOU!

Let's Be a Team

1 + 7 =