Mohd-Tajuddin Abdullah

Prof. Mohd-Tajuddin Abdullah


Research Focus & Metrics

Academic Career Length

7Years (2020-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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6 April 2021 in Animals
Verified
Journal Article
Open access
PDF file
DTDennis Choon Yung Ten
Dennis Choon Yung Ten
RJRohana Jani
Rohana Jani
NHNoor Hashida Hashim
Noor Hashida Hashim
SSSalman Saaban
Salman Saaban
AHAbdul Kadir Abu Hashim
Abdul Kadir Abu Hashim
MAMohd-Tajuddin Abdullah
Mohd-Tajuddin Abdullah
The critically endangered Malayan tiger (Panthera tigris jacksoni), with an estimated population of less than 200 individuals left in isolated rainforest habitats in Malaysia, is in an intermediate population crash leading to extinction in the next decade. The population has decreased significantly by illegal poaching, environmental perturbation, roadkill, and being captured during human–wildlife conflicts. Forty-five or more individuals were extracted from the wild (four animals captured due to conflict, one death due to canine distemper, one roadkilled, and 39 poached) in the 12 years between 2008–2019. The Malayan tigers are the first wildlife species to test positive for COVID-19 and are subject to the Canine Distemper Virus. These anthropogenic disturbances (poaching and human–tiger conflict) and environmental perturbation (decreasing habitat coverage and quality) have long been identified as impending extinction factors. Roadkill and infectious diseases have emerged recently as new confounding factors threatening Malayan tiger extinction in the near future. Peninsular Malaysia has an existing Malayan tiger conservation management plan; however, to enhance the protection and conservation of Malayan tigers from potential extinction, the authority should reassess the existing legislation, regulation, and management plan and realign them to prevent further population decline, and to better enable preparedness and readiness for the ongoing pandemic and future threats.

15 November 2023 in Bioengineering
Verified
Journal Article
Open access
PDF file
NNNoor Ilanie Nordin
Noor Ilanie Nordin
WAN AZANI MUSTAFAWAN AZANI MUSTAFA
WAN AZANI MUSTAFA
MLMuhamad Safiih Lola
Muhamad Safiih Lola
EMELISSA NADIA MADI
ELISSA NADIA MADI
AKAnton Abdulbasah Kamil
Anton Abdulbasah Kamil
MAMohd-Tajuddin Abdullah
Mohd-Tajuddin Abdullah
Support ector achine (SVM) is a newer machine learning algorithm for classification, while logistic regression (LR) is an older statistical classification method. Despite the numerous studies contrasting SVM and LR, new improvements such as bagging and ensemble have been applied to them since these comparisons were made. This study proposes a new hybrid model based on SVM and LR for predicting small events per variable (EPV). The performance of the hybrid, SVM, and LR models with different EPV values was evaluated using COVID-19 data from December 2019 to May 2020 provided by the WHO. The study found that the hybrid model had better classification performance than SVM and LR in terms of accuracy, mean squared error (MSE), and root mean squared error (RMSE) for different EPV values. This hybrid model is particularly important for medical authorities and practitioners working in the face of future pandemics.

10 December 2020 in Animals
Verified
Journal Article
Open access
PDF file
NTNur Aida Md Tamrin
Nur Aida Md Tamrin
ZZzramlah Zainuddin
zramlah Zainuddin
YEYuzine Esa
Yuzine Esa
HAHalimah Alias
Halimah Alias
MIMohd Noor Mat Isa
Mohd Noor Mat Isa
MAMohd-Tajuddin Abdullah
Mohd-Tajuddin Abdullah
Taste perception is an essential function that provides valuable dietary and sensory information, which is crucial for the survival of animals. Studies into the evolution of the sweet taste receptor gene (TAS1R2) are scarce, especially for Bornean endemic primates such as Nasalis larvatus (proboscis monkey), Pongo pygmaeus (Bornean orangutan), and Hylobates muelleri (Muller’s Bornean gibbon). Primates are the perfect taxa to study as they are diverse dietary feeders, comprising specialist folivores, frugivores, gummivores, herbivores, and omnivores. We constructed phylogenetic trees of the TAS1R2 gene for 20 species of anthropoid primates using four different methods (neighbor-joining, maximum parsimony, maximum-likelihood, and Bayesian) and also established the time divergence of the phylogeny. The phylogeny successfully separated the primates into their taxonomic groups as well as by their dietary preferences. Of note, the reviewed time of divergence estimation for the primate speciation pattern in this study was more recent than the previously published estimates. It is believed that this difference may be due to environmental changes, such as food scarcity and climate change, during the late Miocene epoch, which forced primates to change their dietary preferences. These findings provide a starting point for further investigation.
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