20 results on '"Ismail, Shahrina"'
Search Results
2. Trimodality image registration of ultrasound, cardiac computed tomography, and magnetic resonance imaging for transcatheter aortic valve implantation and replacement image guidance
- Author
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Rahimi, Aisyah, Khalil, Azira, Ismail, Shahrina, Jamil, Aminatul Saadiah Abdul, Azizan, Muhammad Mokhzaini, Lai, Khin Wee, and Faisal, Amir
- Published
- 2023
- Full Text
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3. Estimating active cases of Covid-19 post-school reopening in Malaysia using S-I-R modelling.
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Mohd Yunus, Azrul Azim, Ismail, Shahrina, Mohd Yunus, Arif Asraf, Ibrahim, Muhammad Safwan, and Ismail, Shaharudin
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COVID-19 pandemic , *SARS-CoV-2 Omicron variant , *DEATH rate , *PANDEMICS , *VACCINATION - Abstract
As of March 2022, there have been 3,116,564 infections and 32,827 coronavirus-related deaths reported in the country since the pandemic began on 1st March 2022. This drastic increase in numbers has been alarming everyone. Malaysia has successfully handled the first and second waves of the COVID-19 cases. However, the recent wave of omicron variants in Malaysia sees a massive increase in COVID-19 infections. Therefore, forecasting plays a vital role in determining preparedness for the current pandemic. This study aims to understand the behaviour of the current infection trend and provide valuable information to the authority to prevent future spikes of active cases. In this paper, the SIR model (Susceptible - Infected Recovered) was used to estimate the active cases in Malaysia. This forecast is essential to prepare for the current wave outbreak. Besides that, the number of susceptible can be reduced via vaccinations to reduce future outbreaks. Therefore, with proper planning and execution, the inoculation rates in Malaysia proved to be successful, and the impact of mass vaccination would be seen in future. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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4. A Policy Examination of Covid-19 Impact on the Radiology Department Standard Operating Procedures (SOPs): The Malaysian Experience.
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Sunawari, Ahmad Luqmanulhakim, Rahimi, Aisyah, Abdul Jamil, Aminatul Saadiah, Ismail, Shahrina, and Khalil, Azira
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- 2024
- Full Text
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5. Gaussian Integer Solutions of the Diophantine Equation x4+y4=z³ for x≠y.
- Author
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Ismail, Shahrina, Mohd Atan, Kamel Ariffin, Sejas-Viscarra, Diego, and Kai Siong Yow
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GAUSSIAN integers ,DIOPHANTINE equations ,RINGS of integers ,QUARTIC equations - Abstract
Copyright of Baghdad Science Journal is the property of Republic of Iraq Ministry of Higher Education & Scientific Research (MOHESR) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2023
- Full Text
- View/download PDF
6. A review of detection and classification cervical cell images.
- Author
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Nahrawi, Nadzirah, Mustafa, Wan Azani, Idrus, Syed Zulkarnain Syed, Jamlos, Mohd Aminudin, Ismail, Shahrina, Alquran, Hiam, and Alqudah, Ali Mohammad
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CELL imaging ,CERVICAL cancer ,CELL nuclei ,DYSPLASIA ,PAP test ,TUMOR classification - Abstract
Cervical cancer is a very prevalent disease among women all over the world. Cervical cancer can form in the cervix cells found in the lower uterus. Women all over the world are at death risk as a result of this type of cancer. Cervical cancer has seven stages: normal intermediate, normal superficial, columnar, mild dysplasia, moderate dysplasia, severe dysplasia, and carcinoma in situ. Doctors in hospitals find it difficult to recognise cancer cells as it is challenging to view a nucleus through the naked eye. A normal cell's nucleus is smaller than an abnormal cell's nucleus. It is possible to calculate the size of the abnormal nucleus with the naked eye in order to assess the stages of cervical cancer. A tool for identifying and quantifying Pap smear cell images to detect cervical cancer has recently been suggested by several researchers. This method has the potential to increase detection and classification precision, resulting in improved results with balanced data and samples. A comprehensive study of nucleus detection cervical cancer classification techniques was conducted in this paper. As a result of the findings, the function database, detection and classification process, and device performance were all investigated for further evaluation. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
7. Cervical Cancer Detection Techniques: A Chronological Review.
- Author
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Mustafa, Wan Azani, Ismail, Shahrina, Mokhtar, Fahirah Syaliza, Alquran, Hiam, and Al-Issa, Yazan
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EARLY detection of cancer , *CERVICAL cancer , *COMPUTER-aided diagnosis , *CERVICAL cancer diagnosis , *PAP test - Abstract
Cervical cancer is known as a major health problem globally, with high mortality as well as incidence rates. Over the years, there have been significant advancements in cervical cancer detection techniques, leading to improved accuracy, sensitivity, and specificity. This article provides a chronological review of cervical cancer detection techniques, from the traditional Pap smear test to the latest computer-aided detection (CAD) systems. The traditional method for cervical cancer screening is the Pap smear test. It consists of examining cervical cells under a microscope for abnormalities. However, this method is subjective and may miss precancerous lesions, leading to false negatives and a delayed diagnosis. Therefore, a growing interest has been in shown developing CAD methods to enhance cervical cancer screening. However, the effectiveness and reliability of CAD systems are still being evaluated. A systematic review of the literature was performed using the Scopus database to identify relevant studies on cervical cancer detection techniques published between 1996 and 2022. The search terms used included "(cervix OR cervical) AND (cancer OR tumor) AND (detect* OR diagnosis)". Studies were included if they reported on the development or evaluation of cervical cancer detection techniques, including traditional methods and CAD systems. The results of the review showed that CAD technology for cervical cancer detection has come a long way since it was introduced in the 1990s. Early CAD systems utilized image processing and pattern recognition techniques to analyze digital images of cervical cells, with limited success due to low sensitivity and specificity. In the early 2000s, machine learning (ML) algorithms were introduced to the CAD field for cervical cancer detection, allowing for more accurate and automated analysis of digital images of cervical cells. ML-based CAD systems have shown promise in several studies, with improved sensitivity and specificity reported compared to traditional screening methods. In summary, this chronological review of cervical cancer detection techniques highlights the significant advancements made in this field over the past few decades. ML-based CAD systems have shown promise for improving the accuracy and sensitivity of cervical cancer detection. The Hybrid Intelligent System for Cervical Cancer Diagnosis (HISCCD) and the Automated Cervical Screening System (ACSS) are two of the most promising CAD systems. Still, deeper validation and research are required before being broadly accepted. Continued innovation and collaboration in this field may help enhance cervical cancer detection as well as ultimately reduce the disease's burden on women worldwide. [ABSTRACT FROM AUTHOR]
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- 2023
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8. Pap Smear Images Classification Using Machine Learning: A Literature Matrix.
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Alias, Nur Ain, Mustafa, Wan Azani, Jamlos, Mohd Aminudin, Alquran, Hiam, Hanafi, Hafizul Fahri, Ismail, Shahrina, and Rahman, Khairul Shakir Ab
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PAP test ,MACHINE learning ,MEDICAL imaging systems ,CERVICAL cancer ,ARTIFICIAL intelligence - Abstract
Cervical cancer is regularly diagnosed in women all over the world. This cancer is the seventh most frequent cancer globally and the fourth most prevalent cancer among women. Automated and higher accuracy of cervical cancer classification methods are needed for the early diagnosis of cancer. In addition, this study has proved that routine Pap smears could enhance clinical outcomes by facilitating the early diagnosis of cervical cancer. Liquid-based cytology (LBC)/Pap smears for advanced cervical screening is a highly effective precancerous cell detection technology based on cell image analysis, where cells are classed as normal or abnormal. Computer-aided systems in medical imaging have benefited greatly from extraordinary developments in artificial intelligence (AI) technology. However, resource and computational cost constraints prevent the widespread use of AI-based automation-assisted cervical cancer screening systems. Hence, this paper reviewed the related studies that have been done by previous researchers related to the automation of cervical cancer classification based on machine learning. The objective of this study is to systematically review and analyses the current research on the classification of the cervical using machine learning. The literature that has been reviewed is indexed by Scopus and Web of Science. As a result, for the published paper access until October 2022, this study assessed past approaches for cervical cell classification based on machine learning applications. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
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9. The winning percentage in congkak using a randomised strategy.
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Chuei Yee Chen, Ismail, Shahrina, Fong Peng Lim, and Kai Siong Yow
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REPRESENTATIONS of graphs , *PERCENTILES - Abstract
Congkak is a traditional counting game played in Southeast Asia including Malaysia, Singapore, Brunei and Indonesia. To start a game, a board that has 16 holes together with 98 marbles are required. Each player controls a set of seven holes and own a store. The winner of the game is the player who captured more marbles into the store at the end of the game. Note that the firstmove advantage exists in chess; we investigate if the first-move advantage holds in congkak also. We model the route for each player in congkak using a directed graph and adopt these graph representations in our programs, to compute the winning percentage of each player. We focus on games between novices, hence a randomised strategy is used in our algorithm. We present the first experimental results for 100,000 games between novices in congkak. We also suggest some questions for future research in this area. [ABSTRACT FROM AUTHOR]
- Published
- 2022
10. On the integral solutions of the Diophantine equation x4 + y4 = 2kz3 where k > 1.
- Author
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Ismail, Shahrina, Atan, Kamel Ariffin Mohd, Yow, Kai Siong, Viscarra, Diego Sejas, Aloev, Rakhmatillo D., Shadimetov, Kholmat M., Hayotov, Abdullo R., and Khudoyberganov, Mirzoali U.
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DIOPHANTINE equations , *INTEGRALS , *INTEGERS - Abstract
This paper is concerned with the existence, types, and the cardinality of the integral solutions of the Diophantine equation x4 + y4 = 2kz3, for k > 1. The objective of this paper is to develop methods to be used in finding all integer solutions to this equation. Results of the study show the existence of infinitely many integral solutions to this type of Diophantine equation for both cases, x = y and x ≠ y. For the case when x=y, the form of the solutions is given by (a, b, c) = (2k−1n3, 2k-1n3, 2k−1n4) when 1 ≤ k < 5, and (a, b, c) = (2k−1−3tn3, 2k−1−3tn3, 2k−1−4tn4), for t ≤ k − 1 4 when k ≥ 5. Meanwhile, for the case when x ≠ y, the form of solutions is given by (a, b, c) = (2kun2, 2kvn2, 2kn3) or (a, b, c)= (2kdu, 2kdv, 2kdn), depending on the value of k. The main result obtained is a formulation of the generalized method to find all the solutions for this type of Diophantine equation. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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- View/download PDF
11. Numerical approach for nonlinear system of Fredholm-Volterra integral equations.
- Author
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Eshkuvatov, Zainidin, Mamatova, Husnida, Ismail, Shahrina, Abdullah, Ilyani, Aloev, Rakhmatillo, Aloev, Rakhmatillo D., Shadimetov, Kholmat M., Hayotov, Abdullo R., and Khudoyberganov, Mirzoali U.
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INTEGRAL equations ,NONLINEAR systems ,NONLINEAR equations ,KERNEL functions ,NONLINEAR functions - Abstract
In this note, the homotopy analysis method (HAM) is applied as a tool for solving the system of non-linear Fredholm-Volterra integral equations. The generalized chain rule is implemented for differentiation of the non-linear kernel functions with many variables, and the non-linear problem is reduced into a sequence of known non-linear integral equa- tions. The proposed method is compared with the homotopy perturbation method (HPM) given in Yusufogli [20] and Biazar and Ghazyini [21]. Numerical results reveal that the proposed method is very effective with high accuracy and dominated the HPM. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
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12. Numerical treatment of nonlinear mixed Volterra-Fredholm integro-differential equations of fractional order.
- Author
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Eshkuvatov, Zainidin, Laadjal, Zaid, Ismail, Shahrina, Aloev, Rakhmatillo D., Shadimetov, Kholmat M., Hayotov, Abdullo R., and Khudoyberganov, Mirzoali U.
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INTEGRO-differential equations ,FRACTIONAL differential equations ,LINEAR differential equations ,CAPUTO fractional derivatives ,NONLINEAR differential equations ,MATERIALS science - Abstract
In recent years, considerable interest in fractional differential equations has been stimulated due to their numerous applications in the areas of physics and engineering. Many essential phenomena in electromagnetics, acoustics, viscoelasticity, electrochemistry, and material science are well described by differential equations of fractional order (Podlubny [8]). In certain circumstances, many exact solutions for linear fractional differential equation had been found. However, in general, there exists no method that yields an exact solution for nonlinear fractional differential equations. In this note, we consider the following nonlinear mixed Volterra-Fredholm integro-differential equation (VFIDEs) of fractional order. c D 0 + α u (t) φ (t) + λ ∫ 0 t ∫ 0 T k (x , s) F (u (s)) d x d s , (1) u (i) (0) = b i , i = 0 , ... , n − 1 , n − 1 < α ≤ n , (2) where t ∈ Ω = [0; T], k : Ω × Ω → ℝ, ϕ : Ω → ℝ are known functions, F : C(Ω, ℝ) → ℝ is nonlinear function, and u(s) is unknown function to be determined, b
i (i = 0,..., n − 1) and λ are constants, c D 0 + α is the Caputo fractional derivative of order α. At first, Eq. (1)-(2) is written into operator form and applied standard homotopy analysis method (Liao, 1992) to reduce it into a sequence of known integral equation problems. Solving the latter equations step by step using the truncated Taylor series, an approximate solution is obtained. Description of the method and discretization of the problems together with the control convergence parameter are thoroughly studied. In addition, one example is illustrated to show the accuracy and validity of the proposed approach. Numerical results reveal that the proposed method is highly accurate and quickly approaches the exact solution when the number of iteration increases. [ABSTRACT FROM AUTHOR]- Published
- 2021
- Full Text
- View/download PDF
13. Malaysian Nurses' Knowledge of Radiation Protection: A Cross-Sectional Study.
- Author
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Rahimi, Aisyah Mohd, Nurdin, Intan, Ismail, Shahrina, and Khalil, Azira
- Abstract
Radiology is a vital diagnostic tool for multiple disorders that plays an essential role in the healthcare sector. Nurses are majorly involved in a healthcare setting by accompanying patients during the examination. Thus, nurses tend to be exposed during inward X-ray examination, requiring them to keep up with radiation use safety. However, nurses' competence in radiation is still a concept that has not been well studied in Malaysia. The study aimed to define the level of usage understanding and radiation protection among Malaysian nurses. In this research, a cross-sectional survey was conducted among 395 nurses working in hospitals, clinics, and other healthcare sectors in Malaysia. The survey is based on the developed Healthcare Professional Knowledge of Radiation Protection (HPKRP) scale, distributed via the online Google Forms. SPSS version 25.0 (IBM Corporation) was used to analyze the data in this study. Malaysian nurses reported the highest knowledge level in radiation protection with a mean of 6.03 ± 2.59. The second highest is safe ionizing radiation guidelines with 5.83 ± 2.77, but low knowledge levels in radiation physics and radiation usage principle (4.69 ± 2.49). Therefore, healthcare facilities should strengthen the training standards for all nurses working with or exposed to radiation. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
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14. Preparedness and Attributes of COVID-19 among Malaysian Public during the Movement Control Order.
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Syed Mohamad, Sharifah Najwa, Syed Mohamad, Sharifah Fairuz, Ismail, Shahrina, Syed Mohideen, Fathima Begum, Rosli, Fatin Ahza, and Abdul Rahman, Nur Faraheen
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- 2021
- Full Text
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15. The Impact of Covid-19 on Online Teaching and Learning (TnL) Towards Teachers in Malaysia.
- Author
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Ismail, Shahrina, Husaini Mohammad Nazeri, Mohammad Ilham, and Syed Mohamad, Sharifah Fairuz
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- 2021
- Full Text
- View/download PDF
16. Supersingular integral equations of the first kind and its approximate solutions.
- Author
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Eshkuvatov, Z. K., Kammuji, M., Ismail, Shahrina, Long, N. M. A. Nik, Ibrahim, Siti Nur Iqmal, Ibrahim, Noor Akma, Ismail, Fudziah, Lee, Lai Soon, Leong, Wah June, Midi, Habshah, and Wahi, Nadihah
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INTEGRAL equations ,CHEBYSHEV polynomials ,SINGULAR integrals ,POLYNOMIALS ,INTEGRALS - Abstract
In this note, we consider a supersingular integral equations (SuperSIEs) of the first kind on the interval [−1,1] with the assumption that kernel of the hypersingular integral is constant on the diagonal of the domain D = [−1,1]×[−1,1]. Projection method together with Chebyshev polynomials of the first, second, third and fourth kinds are used to find bounded, unbounded and semi-bounded solutions of SuperSIEs respectively. Exact calculations of singular integrals for Chebyshev polynomials allow us to obtain high accurate approximate solution. Gauss- Chebyshev quadrature formulas are used for high accurate computations of regular kernel integrals. Two examples are provided to verify the validity and accuracy of the proposed method. Comparisons with other methods are also given. Numerical examples reveal that approximate solutions are exact if solution of SuperSIEs is of the polynomial forms with corresponding weights. It is worth to note that proposed method works well for large value of node points and errors are drastically decreases. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
17. Future of Mathematical Modelling: A Review of COVID-19 Infected Cases Using S-I-R Model.
- Author
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Mohd Yunus, Azrul Azim, Mohd Yunus, Arif Asraf, Ibrahim, Muhammad Safwan, and Ismail, Shahrina
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COVID-19 ,VIRUS diseases ,MATHEMATICAL models ,VIRAL transmission - Abstract
Copyright of Baghdad Science Journal is the property of Republic of Iraq Ministry of Higher Education & Scientific Research (MOHESR) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2021
- Full Text
- View/download PDF
18. PERFECT TRIANGLES ON THE CURVE $C_{4}$.
- Author
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ISMAIL, SHAHRINA
- Subjects
- *
TRIANGLES , *ELLIPTIC curves , *CURVES , *NUMBER theory , *HERONS - Abstract
A Heron triangle is a triangle that has three rational sides $(a,b,c)$ and a rational area, whereas a perfect triangle is a Heron triangle that has three rational medians $(k,l,m)$. Finding a perfect triangle was stated as an open problem by Richard Guy [Unsolved Problems in Number Theory (Springer, New York, 1981)]. Heron triangles with two rational medians are parametrized by the eight curves $C_{1},\ldots ,C_{8}$ mentioned in Buchholz and Rathbun ['An infinite set of heron triangles with two rational medians', Amer. Math. Monthly 104(2) (1997), 106–115; 'Heron triangles and elliptic curves', Bull. Aust. Math.Soc. 58 (1998), 411–421] and Bácskái et al. [Symmetries of triangles with two rational medians, http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.65.6533, 2003]. In this paper, we reveal results on the curve $C_{4}$ which has the property of satisfying conditions such that six of seven parameters given by three sides, two medians and area are rational. Our aim is to perform an extensive search to prove the nonexistence of a perfect triangle arising from this curve. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
19. Factors Influencing the Purchase Decision of Affordable Housing Among Middle Income Earner: A Case Study of School teachers in Malaysia.
- Author
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Ismail, Shahrina, Mansor, Nur Shahirah, and Syed Mohamad, Sharifah Fairuz
- Published
- 2020
- Full Text
- View/download PDF
20. A Descent Four-Term of Liu and Storey Conjugate Gradient Method for Large Scale Unconstrained Optimization Problems.
- Author
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Alhawarat, Ahmad, Alolaiyan, Hanan, Masmali, Ibtisam A., Salleh, Zabidin, and Ismail, Shahrina
- Subjects
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DEEP learning , *CONJUGATE gradient methods , *MACHINE learning - Abstract
The conjugate gradient (CG) method is a useful tool for obtaining the optimum point for unconstrained optimization problems since it does not require a second derivative or its approximations. Moreover, the conjugate gradient method can be applied in many fields such as machine learning, deep learning, neural network, and many others. This paper constructs a fourterm conjugate gradient method that satisfies the descent property and convergence properties to obtain the stationary point. The new modification was constructed based on Liu and Storey’s conjugate gradient method, two-term conjugate gradient method, and three-term conjugate gradient method. To analyze the efficiency and robustness, we used more than 150 optimization functions from the CUTEst library with different dimensions and shapes. The numerical results show that the new modification outperforms the recent conjugate gradient methods such as CG-Descent, Dai and Liao, and others in terms of number of functions evaluations, number of gradient evaluations, number of iterations, and CPU time. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
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