83 results on '"Irfan Alam"'
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2. A Verifiable Multi-Secret Sharing Scheme for Hierarchical Access Structure
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Irfan Alam, Amal S. Alali, Shakir Ali, and Muhammad S. M. Asri
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access structure ,multi-secret ,hierarchy ,verification ,secret sharing ,polynomial ,Mathematics ,QA1-939 - Abstract
Sharing confidential information is a critical concern in today’s world. Secret sharing schemes facilitate the sharing of secrets in a way that ensures only authorized participants (shareholders) can access the secret using their allocated shares. Hierarchical secret sharing schemes (HSSSs) build upon Shamir’s scheme by organizing participants into different levels based on priority. Within HSSS, participants at each level can reconstruct the secret if a specified number, denoted as the threshold value (t), or more of them are present. Each level has a predetermined threshold value. If the number of participants falls below the threshold at any level, higher-level participants must be involved in reconstructing the secret at lower levels. Our paper proposes schemes that implement hierarchical access structures and enable the sharing of multiple secrets. Additionally, our proposed scheme includes share verification. We have analyzed potential attacks and demonstrated the scheme’s resistance against them. Through security analysis and comparison with existing schemes, we highlight the novelty and superiority of our proposed approach, contributing to advancements in secure information-sharing practices.
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- 2024
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3. SONG: A Multi-Objective Evolutionary Algorithm for Delay and Energy Aware Facility Location in Vehicular Fog Networks
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Md. Muzakkir Hussain, Ahmad Taher Azar, Rafeeq Ahmed, Syed Umar Amin, Basit Qureshi, V. Dinesh Reddy, Irfan Alam, and Zafar Iqbal Khan
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intelligent transportation systems ,vehicular fog computing ,Genetic Algorithm ,vehicular ad hoc network ,SDG7 ,SDG9 ,Chemical technology ,TP1-1185 - Abstract
With the emergence of delay- and energy-critical vehicular applications, forwarding sense-actuate data from vehicles to the cloud became practically infeasible. Therefore, a new computational model called Vehicular Fog Computing (VFC) was proposed. It offloads the computation workload from passenger devices (PDs) to transportation infrastructures such as roadside units (RSUs) and base stations (BSs), called static fog nodes. It can also exploit the underutilized computation resources of nearby vehicles that can act as vehicular fog nodes (VFNs) and provide delay- and energy-aware computing services. However, the capacity planning and dimensioning of VFC, which come under a class of facility location problems (FLPs), is a challenging issue. The complexity arises from the spatio-temporal dynamics of vehicular traffic, varying resource demand from PD applications, and the mobility of VFNs. This paper proposes a multi-objective optimization model to investigate the facility location in VFC networks. The solutions to this model generate optimal VFC topologies pertaining to an optimized trade-off (Pareto front) between the service delay and energy consumption. Thus, to solve this model, we propose a hybrid Evolutionary Multi-Objective (EMO) algorithm called Swarm Optimized Non-dominated sorting Genetic algorithm (SONG). It combines the convergence and search efficiency of two popular EMO algorithms: the Non-dominated Sorting Genetic Algorithm (NSGA-II) and Speed-constrained Particle Swarm Optimization (SMPSO). First, we solve an example problem using the SONG algorithm to illustrate the delay–energy solution frontiers and plotted the corresponding layout topology. Subsequently, we evaluate the evolutionary performance of the SONG algorithm on real-world vehicular traces against three quality indicators: Hyper-Volume (HV), Inverted Generational Distance (IGD) and CPU delay gap. The empirical results show that SONG exhibits improved solution quality over the NSGA-II and SMPSO algorithms and hence can be utilized as a potential tool by the service providers for the planning and design of VFC networks.
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- 2023
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4. One-dimensional numerical investigation on multi-cylinder gasoline engine fueled by micro-emulsions, CNG, and hydrogen in dual fuel mode
- Author
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QADIRI, Ufaith, SIVA KRISHNA REDDY, D., ALI PASHA, Amjad, and IRFAN ALAM, Mohammad
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- 2023
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5. Improved Sampling and Feature Selection to Support Extreme Gradient Boosting For PCOS Diagnosis.
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Muhammad Sakib Khan Inan, Rubaiath E. Ulfath, Fahim Irfan Alam, Fateha Khanam Bappee, and Rizwan Hasan
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- 2021
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6. A Hybrid Probabilistic Ensemble based Extreme Gradient Boosting Approach For Breast Cancer Diagnosis.
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Muhammad Sakib Khan Inan, Rizwan Hasan, and Fahim Irfan Alam
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- 2021
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7. Designing and Implementing Cloud Security Using Multi-layer DNA Cryptography in Python
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Irfan Alam, Md., Singh, Satya Narayan, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Hirche, Sandra, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Li, Yong, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Möller, Sebastian, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zhang, Junjie James, Series Editor, Chakraborty, Mithun, editor, Jha, Raman Kr., editor, Balas, Valentina Emilia, editor, Sur, Samarendra Nath, editor, and Kandar, Debdatta, editor
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- 2021
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8. Abundance-Guided Superpixels and Recurrent Neural Network for Hyperspectral Image Classification.
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Fahim Irfan Alam, Jun Zhou 0001, and Alan Wee-Chung Liew
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- 2019
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9. Triplet Constrained Deep Feature Extraction for Hyperspectral Image Classification.
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Fahim Irfan Alam, Jun Zhou 0001, Alan Wee-Chung Liew, Jun Jo, and Yongsheng Gao 0001
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- 2018
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10. One-dimensional numerical investigation on multi-cylinder gasoline engine fueled by micro-emulsions, CNG, and hydrogen in dual fuel mode
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Ufaith QADIRI, D. SIVA KRISHNA REDDY, Amjad ALI PASHA, and Mohammad IRFAN ALAM
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Mechanical Engineering ,Aerospace Engineering - Published
- 2023
11. Combining Unmixing and Deep Feature Learning for Hyperspectral Image Classification.
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Fahim Irfan Alam, Jun Zhou 0001, Lei Tong, Alan Wee-Chung Liew, and Yongsheng Gao 0001
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- 2017
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12. High Altitude Airship: A Review of Thermal Analyses and Design Approaches
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Mohammad Irfan Alam, Amjad Ali Pasha, Abdul Gani Abdul Jameel, and Usama Ahmed
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Applied Mathematics ,Computer Science Applications - Published
- 2022
13. CRF learning with CNN features for hyperspectral image segmentation.
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Fahim Irfan Alam, Jun Zhou 0001, Alan Wee-Chung Liew, and Xiuping Jia
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- 2016
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14. Analysis and Design of G+12 Storey Reinforced Concrete Building Using ETABS
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P. Vinoth, Irfan Alam, Abdul Rehman, Mohammad Raiyan, Gauhar Imam, and Mohd Ashar Zubair
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Extended Three Dimensional Analysis of Building Systems is abbreviated as ETABS. The significant objective of this program is to make multi-story structures in a purposeful way. The productive plan and development of quake safe designs is significant everywhere. ETABS was used to analyse and design a multi-story residential structure with the lateral loading effect of an earthquake. IS 1893-part2:2002 and IS 456:2000 were used to design this project. This analysis takes into account harsh earthquake zones, and reactions are evaluated using soil type-II conditions. Important phrases: Etabs programme , Seismic Analysis of G+12 storey RC frame structure.
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- 2022
15. A novel protocol for efficient authentication in cloud-based IoT devices
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Irfan Alam and Manoj Kumar
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Computer Networks and Communications ,Hardware and Architecture ,Media Technology ,Software - Published
- 2022
16. Limiting Spherical Integrals of Bounded Continuous Functions
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Irfan Alam
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Mathematics - Functional Analysis ,Statistics and Probability ,General Mathematics ,Probability (math.PR) ,FOS: Mathematics ,Mathematics - Logic ,Statistics, Probability and Uncertainty ,Logic (math.LO) ,Mathematics - Probability ,28E05 (Primary), 28C20, 03H05, 26E35, 46S20 (Secondary) ,Functional Analysis (math.FA) - Abstract
We use nonstandard analysis to study the problem of expressing a Gaussian integral in terms of the limiting behavior of a sequence of spherical integrals. Peterson and Sengupta proved that if a Gaussian measure $\mu$ has full support on a finite-dimensional Euclidean space, then the expected value of a bounded measurable function on that domain can be expressed as a limit of integrals over spheres $S^{n-1}(\sqrt{n})$ intersected with certain affine subspaces of $\mathbb{R}^n$. This allows one to realize the Gaussian Radon transform of such functions as a limit of spherical integrals. Using nonstandard analysis, we study such limits in terms of Loeb integrals over a single hyperfinite dimensional sphere. This nonstandard geometric approach generalizes the known limiting result for bounded continuous functions to the case when the Gaussian measure is not necessarily fully supported. We also present an asymptotic linear algebra result needed in the above proof., Comment: 26 pages, 3 figures, updated with submitted version (corrected minor mistakes and edited exposition slightly at a few places)
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- 2022
17. Prediction of Yield Sooting Index Utilizing Artificial Neural Networks and Adaptive-Network-Based Fuzzy Inference Systems
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Faisal D. Alboqami, Amjad A. Pasha, Mohammad Irfan Alam, Abdulazeez Abdulraheem, and Abdul Gani Abdul Jameel
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Multidisciplinary - Published
- 2022
18. A novel authentication scheme for group based communication for IoT oriented infrastructure in smart cities
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Irfan Alam and Manoj Kumar
- Abstract
As a result of the rapid developments in digital technologies, smart cities have been adorned with several digital gadgets based on the Internet of Things (IoT). The essential part of smart city operations is IoT communications. IoT devices generate, process, and exchange a large amount of security-critical and privacy-sensitive data regularly, resulting in attractive targets for threats and attacks. Group-oriented communication, such as data gathering and area monitoring, is critical in the IoT World. It enables users to manage various IoT devices simultaneously. Conventional one-to-one authentication techniques donot consider the resource constraints of IoT devices in grouped communication. They also do not solve the issue of massive machinecommunication (mMTC) scalability. Many to Many (M2M)authentication approach of group authentication makes grouporientedcommunication and mMTC very secure. The lower timecomplexity of Group-based authentication (GBA) makes theseprotocols very popular for efficient and secured communication.This paper uses a polynomial-based group authentication schemeand membership verification to ensure efficient and threat-freecommunication among IoT devices. Bi-variate polynomials havebeen used instead of single variable functions in the proposedscheme. The protected nature of the bi-variate polynomial makesthe proposed scheme very secure and reliable. Furthermore,establishing the session key makes the proposed scheme effectiveand efficient. Security analysis of the proposed work shows itsefficiency over existing schemes.
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- 2022
19. Learning-Based Object Segmentation Using Regional Spatial Templates and Visual Features.
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Iker Gondra and Fahim Irfan Alam
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- 2012
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20. Incorporating shape into spatially-aware adaptive object segmentation algorithm.
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Fahim Irfan Alam and Iker Gondra
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- 2012
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21. A Bayesian network-based tunable image segmentation algorithm for object recognition.
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Fahim Irfan Alam and Iker Gondra
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- 2011
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22. An overview of Secure Communication in Smart Cities: Issues and Cryptographic Solution
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Irfan Alam and Manoj Kumar
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- 2022
23. Breast Cancer Classification by Using Multi-Headed Convolutional Neural Network Modeling
- Author
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Refat Khan Pathan, Fahim Irfan Alam, Suraiya Yasmin, Zuhal Y. Hamd, Hanan Aljuaid, Mayeen Uddin Khandaker, and Sian Lun Lau
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Health Information Management ,Leadership and Management ,Health Policy ,Health Informatics ,breast cancer classification ,multi-headed CNN ,ultrasound image processing ,medical image modeling - Abstract
Breast cancer is one of the most widely recognized diseases after skin cancer. Though it can occur in all kinds of people, it is undeniably more common in women. Several analytical techniques, such as Breast MRI, X-ray, Thermography, Mammograms, Ultrasound, etc., are utilized to identify it. In this study, artificial intelligence was used to rapidly detect breast cancer by analyzing ultrasound images from the Breast Ultrasound Images Dataset (BUSI), which consists of three categories: Benign, Malignant, and Normal. The relevant dataset comprises grayscale and masked ultrasound images of diagnosed patients. Validation tests were accomplished for quantitative outcomes utilizing the exhibition measures for each procedure. The proposed framework is discovered to be effective, substantiating outcomes with only raw image evaluation giving a 78.97% test accuracy and masked image evaluation giving 81.02% test precision, which could decrease human errors in the determination cycle. Additionally, our described framework accomplishes higher accuracy after using multi-headed CNN with two processed datasets based on masked and original images, where the accuracy hopped up to 92.31% (±2) with a Mean Squared Error (MSE) loss of 0.05. This work primarily contributes to identifying the usefulness of multi-headed CNN when working with two different types of data inputs. Finally, a web interface has been made to make this model usable for non-technical personals.
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- 2022
24. A novel authentication protocol to ensure confidentiality among the Internet of Medical Things in covid-19 and future pandemic scenario
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Irfan Alam and Manoj Kumar
- Subjects
Artificial Intelligence ,Hardware and Architecture ,Management of Technology and Innovation ,Computer Science (miscellaneous) ,Engineering (miscellaneous) ,Software ,Computer Science Applications ,Information Systems - Published
- 2023
25. An Investigation into Crime Forecast Using Auto ARIMA and Stacked LSTM
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Sadia Sharmin, Fahim Irfan Alam, Avisheak Das, and Rokan Uddin
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- 2022
26. Multi-Variate Regression Analysis for Stock Market price prediction using Stacked LSTM
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Rokan Uddin, Fahim Irfan Alam, Avisheak Das, and Sadia Sharmin
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- 2022
27. Boosting Guided Probabilistic Ensemble-based Approach For Phishing Website Detection
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Avisheak Das, Fahim Irfan Alam, Sadia Sharmin, and Rokan Uddin
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- 2022
28. Efficient Prediction of Cardiovascular Disease by Fusing Boosting Classifiers Combined with Explainable Approach
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Naimur Rahman, Farah Jahan, and Fahim Irfan Alam
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- 2022
29. A Novel Approach for Estimating and Analyzing the Environmental Parameters: A Case Study for Renewable Energy Prospective
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Mohammad Irfan Alam and Amjad Ali Pasha
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- 2022
30. Bangla Music Genre Classification Using Fast and Scalable Integrated Ensemble Boosting Framework
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Rizwan Hasan, Sohrab Hossain, Fahim Irfan Alam, and Mannpreet Barua
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- 2021
31. Effects of oral anticoagulation for atrial fibrillation after spontaneous intracranial haemorrhage: a randomised, open-label, assessor-blinded, pilot phase, non-inferiority trial
- Author
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Rustam Al-Shahi Salman, Catriona Keerie, Jacqueline Stephen, Steff Lewis, John Norrie, Martin S. Dennis, David E. Newby, Joanna M. Wardlaw, Gregory Y.H. Lip, Adrian Parry-Jones, Philip M. White, Colin Baigent, Dan Lasserson, Colin Oliver, Fiach O'Mahony, Shannon Amoils, John Bamford, Jane Armitage, Jonathan Emberson, Gabriël J.R. Rinkel, Gordon Lowe, Karen Innes, Kasia Adamczuk, Lynn Dinsmore, Jonathan Drever, Garry Milne, Allan Walker, Aidan Hutchison, Carol Williams, Ruth Fraser, Rosemary Anderson, Kate Covil, Kelly Stewart, Jessica Rees, Peter Hall, Alistair Bullen, Andrew Stoddart, Tom J. Moullaali, Jeb Palmer, Eleni Sakka, Joanne Perthen, Nicola Lyttle, Neshika Samarasekera, Allan MacRaild, Seona Burgess, Jessica Teasdale, Michelle Coakley, Pat Taylor, Gordon Blair, William Whiteley, Susan Shenkin, Una Clancy, Malcolm Macleod, Rachel Sutherland, Tom Moullaali, Amanda Barugh, Christine Lerpiniere, Fiona Moreton, Nicholas Fethers, Tal Anjum, Manju Krishnan, Peter Slade, Sharon Storton, Marie Williams, Caroline Davies, Lynda Connor, Glyn Gainard, Carl Murphy, Mark Barber, Derek Esson, James Choulerton, Louise Shaw, Suzanne Lucas, Sarah Hierons, Joanne Avis, Andrew Stone, Lukuman Gbadamoshi, Telma Costa, Lauren Pearce, Kirsty Harkness, Emma Richards, Jo Howe, Christine Kamara, Ralf Lindert, Ali Ali, Jahanzeb Rehan, Sarah Chapman, Maria Edwards, Raj Bathula, David Cohen, Joseph Devine, Mushiya Mpelembue, Priya Yesupatham, Swati Chhabra, Gbadebo Adewetan, Robert Ballantine, Daniel Brooks, Gemma Smith, Gill Rogers, Stuart Marsden, Sarah Clark, Ami Wilkinson, Ellen Brown, Lynsey Stephenson, Khin Nyo, Annie Abraham, Yogish Pai, Gek Shim, Vidya Baliga, Anand Nair, Matthew Robinson, Catherine Hawksworth, Jill Greig, Irfan Alam, Tonicha Nortcliffe, Ridha Ramiz, Ryan Shaw, Stephanie Lee, Tracy Marsden, Jane Perez, Emily Birleson, Rajendra Yadava, Mirriam Sangombe, Sam Stafford, Tom Hughes, Lucy Knibbs, Bethan Morse, Stefan Schwarz, Benjamin Jelley, Susan White, Bella Richard, Heidi Lawson, Sally Moseley, Michelle Tayler, Mandy Edwards, Claire Triscott, Rebecca Wallace, Angela Hall, Amanda Dell, Khalid Rashed, Sarah Board, Clare Buckley, Alfonso Tanate, Tressy Pitt-Kerby, Kate Beesley, Jess Perry, Christine Hellyer, Paul Guyler, Nisha Menon, Sharon Tysoe, Raji Prabakaran, Martin Cooper, Anoja Rajapakse, Inez Wynter, Susan Smith, Nic Weir, Cherish Boxall, Hannah Yates, Simon Smith, Pamela Crawford, James Marigold, Fiona Smith, Jake Harvey, Sue Evans, Laura Baldwin, Sarah Hammond, Paul Mudd, Angela Bowring, Samantha Keenan, Kevin Thorpe, Mohammad Haque, Joanne Taaffe, Natalie Temple, Tracey Peachey, Kim Wells, Fiona Haines, Nicola Butterworth-Cowin, Zoey Horne, Radim Licenik, Hayley Boughton, Timothy England, Amanda Hedstrom, Brian Menezes, Ruth Davies, Venetia Johnson, Simon Whittingham-Jones, David Werring, Sabaa Obarey, Caroline Watchurst, Amy Ashton, Shez Feerick, Nina Francia, Azra Banaras, Daniel Epstein, Marilena Marinescu, Annick Williams, Anna Robinson, Fiona Humphries, Ijaz Anwar, Arunkumar Annamalai, Susan Crawford, Vicky Collins, Lorna Shepherd, Elaine Siddle, Justin Penge, Sam Qureshi, Vinodh Krishnamurthy, Vasileios Papavasileiou, Dean Waugh, Emelda Veraque, Nathan Douglas, Numan Khan, Sankaranarayanan Ramachandran, Peter Sommerville, Anthony Rudd, Sagal Kullane, Ajay Bhalla, Jonathan Birns, Rowshanara Ahmed, Meegan Gibbons, Eva Klamerus, Benjie Cendreda, Keith Muir, Nicola Day, Angela Welch, Wilma Smith, Jennifer Elliot, Salwa Eltawil, Ammad Mahmood, Kim Hatherley, Shirley Mitchell, Harjit Bains, Lauren Quinn, Rachel Teal, Ivie Gbinigie, George Harston, Phil Mathieson, Gary Ford, Ursula Schulz, James Kennedy, Kirubananthan Nagaratnam, Kiran Bangalore, Neelima Bhupathiraju, Chris Wharton, Ken Fotherby, Ahmad Nasar, Angie Stevens, Angela Willberry, Rachel Evans, Baljinder Rai, Chloe Blake, Kamy Thavanesan, Gail Hann, Tanith Changuion, Sara Nix, Amanda Whiting, Michelle Dharmasiri, Louise Mallon, Marketa Keltos, Nigel Smyth, Charlotte Eglinton, John Duffy, Ela Tone, Lucy Sykes, Emily Porter, Carolyn Fitton, Nikolaos Kirkineziadis, Gillian Cluckie, Kate Kennedy, Sarah Trippier, Rebecca Williams, Elizabeth Hayter, James Rackie, Bhavini Patel, Ghatala Rita, Adrian Blight, Val Jones, Liqun Zhang, Lillian Choy, Anthony Pereira, Brian Clarke, Samer Al-Hussayni, Lynn Dixon, Andrew Young, Adrian Bergin, David Broughton, Senthil Raghunathan, Benjamin Jackson, Jason Appleton, Gwendoline Wilkes, Amanda Buck, Carla Richardson, Judith Clarke, Lucy Fleming, Gemma Squires, Zhe Law, Camille Hutchinson, Vera Cvoro, Mandy Couser, Amanda McGregor, Sean McAuley, Susan Pound, Patricia Cochrane, Clare Holmes, Peter Murphy, Nicola Devitt, Mairead Osborn, Amy Steele, Lucy Belle Guthrie, Elizabeth Smith, Jonathan Hewitt, Natalie Chaston, Min Myint, Andrew Smith, Louise Fairlie, Michelle Davis, Beth Atkinson, Stephen Woodward, Valerie Hogg, Michelle Fawcett, Louise Finlay, Anand Dixit, Eleanor Cameron, Breffni Keegan, Jim Kelly, Dónal Concannon, Dipankar Dutta, Deborah Ward, Jon Glass, Susan O'Connell, Joseph Ngeh, Alison O'Kelly, Emma Williams, Suzanne Ragab, Damian Jenkinson, Judith Dube, Laura Gleave, Jacqui Leggett, Nisha Kissoon, Louise Southern, Utpal Naghotra, Maria Bokhari, Beverley McClelland, Katja Adie, Abhijit Mate, Frances Harrington, Ali James, Elizabeth Swanson, Terri Chant, Miriam Naccache, Abbie Coutts, Gillian Courtauld, Sarah Whurr, Sue Webber, Emily Shead, Robert Luder, Maneesh Bhargava, Elodie Murali, Larissa Cuenoud, Kath Pasco, O Speirs, Lianne Chapman, Linda Inskip, Lisa Kavanagh, Meena Srinivasan, Nichola Motherwell, Indranil Mukherjee, Louise Tonks, Denise Donaldson, Heather Button, Rebecca Wilcox, Fran Hurford, Rachel Logan, Andy Taylor, Tracie Arden, Michael Carpenter, Prabal Datta, Tajammal Zahoor, Linda Jackson, Ann Needle, Andrew Stanners, Imran Ghouri, Donna Exley, Salman Akhtar, Hollie Brooke, Shannen Beadle, Eoin O'Brien, Jobbin Francis, Joanne McGee, Elaine Amis, Jennifer Mitchell, Sarah Finlay, Devesh Sinha, Csilla Manoczki, Sam King, James Tarka, Sumita Choudhary, Jegamalini Premaruban, Dorothy Sutton, Pradeep Kumar, Charlotte Culmsee, Caroline Winckley, Holly Davies, Hilary Thatcher, Evangelos Vasileiadis, Basaam Aweid, Melinda Holden, Cathy Mason, Thant Hlaing, Gladys Madzamba, Tanya Ingram, Michelle Linforth, Claire Cullen, Nibu Thomas, John France, Afaq Saulat, Biju Bhaskaran, Pauline Fitzell, Kathleen Horan, Catherine Manyoni, Josie Garfield-Smith, Hannah Griffin, Stacey Atkins, Joan Redome, Girish Muddegowda, Holly Maguire, Adrian Barry, Nenette Abano, Resti Varquez, Joanne Hiden, Susan Lyjko, Alda Remegoso, Kay Finney, Adrian Butler, Martin Strecker, Mary Joan MaCleod, Janice Irvine, Sandra Nelson, German Guzmangutierrez, Jacqueline Furnace, Vicky Taylor, Hawraman Ramadan, Kim Storton, Sohail Hassan, Eman Abdus Sami, Ruth Bellfield, Kelvin Stewart, Outi Quinn, Chris Patterson, Hedley Emsley, Bindu Gregary, Shakeel Ahmed, Shakeelah Patel, Sonia Raj, Sulaiman Sultan, Fiona Wright, Peter Langhorne, Ruth Graham, Terry Quinn, and Kate McArthur
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Adult ,medicine.medical_specialty ,Adolescent ,medicine.drug_class ,Population ,Minimisation (clinical trials) ,Intracranial haemorrhage ,subarachnoid haemorrhage ,antiplatelet therapy ,law.invention ,Randomized controlled trial ,law ,Internal medicine ,Atrial Fibrillation ,Medicine ,Humans ,atrial fibrillation ,Prospective Studies ,education ,Adverse effect ,Stroke ,oral anticoagulation ,education.field_of_study ,business.industry ,Hazard ratio ,intraventricular haemorrhage ,Anticoagulants ,Atrial fibrillation ,intracerebral haemorrhage ,Vitamin K antagonist ,medicine.disease ,United Kingdom ,subdural haemorrhage ,Neurology (clinical) ,business ,Intracranial Hemorrhages ,randomised controlled trial - Abstract
Summary Background Oral anticoagulation reduces the rate of systemic embolism for patients with atrial fibrillation by two-thirds, but its benefits for patients with previous intracranial haemorrhage are uncertain. In the Start or STop Anticoagulants Randomised Trial (SoSTART), we aimed to establish whether starting is non-inferior to avoiding oral anticoagulation for survivors of intracranial haemorrhage who have atrial fibrillation. Methods SoSTART was a prospective, randomised, open-label, assessor-masked, parallel-group, pilot phase trial done at 67 hospitals in the UK. We recruited adults (aged ≥18 years) who had survived at least 24 h after symptomatic spontaneous intracranial haemorrhage, had atrial fibrillation, and had a CHA2DS2-VASc score of at least 2. Web-based computerised randomisation incorporating a minimisation algorithm allocated participants (1:1) to start or avoid long-term (≥1 year) full treatment dose open-label oral anticoagulation. The participants assigned to start oral anticoagulation received either a direct oral anticoagulant or vitamin K antagonist, and the group assigned to avoid oral anticoagulation received standard clinical practice (antiplatelet agent or no antithrombotic agent). The primary outcome was recurrent symptomatic spontaneous intracranial haemorrhage, and was adjudicated by an individual masked to treatment allocation. All outcomes were ascertained for at least 1 year after randomisation and assessed in the intention-to-treat population of all randomly assigned participants, using Cox proportional hazards regression adjusted for minimisation covariates. We planned a sample size of 190 participants (one-sided p=0·025, power 90%, allowing for non-adherence) based on a non-inferiority margin of 12% (or adjusted hazard ratio [HR] of 3·2). This trial is registered with ClinicalTrials.gov (NCT03153150) and is complete. Findings Between March 29, 2018, and Feb 27, 2020, consent was obtained at 61 sites for 218 participants, of whom 203 were randomly assigned at a median of 115 days (IQR 49–265) after intracranial haemorrhage onset. 101 were assigned to start and 102 to avoid oral anticoagulation. Participants were followed up for median of 1·2 years (IQR 0·97–1·95; completeness 97·2%). Starting oral anticoagulation was not non-inferior to avoiding oral anticoagulation: eight (8%) of 101 in the start group versus four (4%) of 102 in the avoid group had intracranial haemorrhage recurrences (adjusted HR 2·42 [95% CI 0·72–8·09]; p=0·152). Serious adverse events occurred in 17 (17%) participants in the start group and 15 (15%) in the avoid group. 22 (22%) patients in the start group and 11 (11%) patients in the avoid group died during the study. Interpretation Whether starting oral anticoagulation was non-inferior to avoiding it for people with atrial fibrillation after intracranial haemorrhage was inconclusive, although rates of recurrent intracranial haemorrhage were lower than expected. In view of weak evidence from analyses of three composite secondary outcomes, the possibility that oral anticoagulation might be superior for preventing symptomatic major vascular events should be investigated in adequately powered randomised trials. Funding British Heart Foundation, Medical Research Council, Chest Heart & Stroke Scotland.
- Published
- 2021
32. Significance of non-Fourier heat flux on ferromagnetic Powell-Eyring fluid subject to cubic autocatalysis kind of chemical reaction
- Author
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M. Irfan, W.A. Khan, Amjad Ali Pasha, Mohammad Irfan Alam, Nazrul Islam, and M. Zubair
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General Chemical Engineering ,Condensed Matter Physics ,Atomic and Molecular Physics, and Optics - Published
- 2022
33. Statistical analysis of viscous hybridized nanofluid flowing via Galerkin finite element technique
- Author
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Amjad Ali Pasha, Nazrul Islam, Wasim Jamshed, Mohammad Irfan Alam, Abdul Gani Abdul Jameel, Khalid A. Juhany, and Radi Alsulami
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General Chemical Engineering ,Condensed Matter Physics ,Atomic and Molecular Physics, and Optics - Published
- 2022
34. Muhammadan Educational Conference And Achievement Of Mohshin Ul Mulk
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Abubakar Siddique and Irfan Alam
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Scope (project management) ,Political science ,Law ,Phenomenon ,media_common.quotation_subject ,Muslim community ,Foundation (evidence) ,Passion ,media_common - Abstract
Sir Syed’s vision to bring together fragmented Muslim efforts for education led to the foundation of Muhammadan Educational Conference. This vision was passionately taken forward by Mohsin-ul-Mulk. He was a man of pragmatic approach and took initiatives to keep the spirit of the conference alive during difficult times. Sir Syed and Mohsin-ul Mulk may have been in disagreement on certain issues, but most of the times they found a meeting ground in their common passion for the betterment of Muslim community. Mohsin-ul Mulk’s untiring efforts not only kept the conference active but also extended its scope to make it an all India phenomenon.
- Published
- 2019
35. Role of International Financial Integration on Financial Market Development of Euro Area Countries
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Irfan Alam
- Subjects
Financial market ,Financial integration ,Financial system ,Business - Abstract
The aim of this paper is to investigate the role of international financial integration into financial market development of Euro area countries. Annual dataset from 1998 to 2014 by using multiple regression method. The study focuses on financial integration on determining the impact on financial market development. Overall results confirming the significant positive and negative effect of international financial integration (Stock traded& share price and stock turnover ratio, respectively) while insignificant positive andnegative effect of financial integration (financial assets and liabilities and share price volatility, respectively) on financial market development. The finding provides strong evidence of achieving higher financial market development due to the drivers of financial integration.
- Published
- 2019
36. Conditional Random Field and Deep Feature Learning for Hyperspectral Image Classification
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Jun Zhou, Alan Wee-Chung Liew, Yongsheng Gao, Fahim Irfan Alam, Xiuping Jia, and Jocelyn Chanussot
- Subjects
Conditional random field ,Contextual image classification ,Computer science ,business.industry ,Deep learning ,Feature extraction ,0211 other engineering and technologies ,Hyperspectral imaging ,Pattern recognition ,02 engineering and technology ,Image segmentation ,Convolutional neural network ,Computer Science::Computer Vision and Pattern Recognition ,General Earth and Planetary Sciences ,Graphical model ,Artificial intelligence ,Electrical and Electronic Engineering ,business ,Feature learning ,021101 geological & geomatics engineering - Abstract
Image classification is considered to be one of the critical tasks in hyperspectral remote sensing image processing. Recently, a convolutional neural network (CNN) has established itself as a powerful model in classification by demonstrating excellent performances. The use of a graphical model such as a conditional random field (CRF) contributes further in capturing contextual information and thus improving the classification performance. In this paper, we propose a method to classify hyperspectral images by considering both spectral and spatial information via a combined framework consisting of CNN and CRF. We use multiple spectral band groups to learn deep features using CNN, and then formulate deep CRF with CNN-based unary and pairwise potential functions to effectively extract the semantic correlations between patches consisting of 3-D data cubes. Furthermore, we introduce a deep deconvolution network that improves the final classification performance. We also introduced a new data set and experimented our proposed method on it along with several widely adopted benchmark data sets to evaluate the effectiveness of our method. By comparing our results with those from several state-of-the-art models, we show the promising potential of our method.
- Published
- 2019
37. Improved Sampling and Feature Selection to Support Extreme Gradient Boosting For PCOS Diagnosis
- Author
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Rubaiath E Ulfath, Fahim Irfan Alam, Rizwan Hasan, Muhammad Sakib Khan Inan, and Fateha Khanam Bappee
- Subjects
Boosting (machine learning) ,Computer science ,business.industry ,Feature extraction ,Probabilistic logic ,030209 endocrinology & metabolism ,Feature selection ,030204 cardiovascular system & hematology ,Machine learning ,computer.software_genre ,Polycystic ovary ,03 medical and health sciences ,0302 clinical medicine ,Classifier (linguistics) ,Outlier ,Artificial intelligence ,Gradient boosting ,business ,computer - Abstract
PolyCystic Ovary Syndrome (PCOS) is one of the most common causes of female infertility, affecting a large number of women of reproductive age, even continuing far beyond the childbearing years. This hormonal disorder may further lead to the risk of other long-term complications. Considering the powerful recognition abilities of the probabilistic nature of ensemble-based gradient boosting algorithms, particularly in the field of the medical domain, we propose the use of Extreme Gradient Boosting, XGBoost, for early detection of PCOS. To strongly support an effective classification performance, we have resampled our data using a combination of SMOTE(Synthetic Minority Oversampling Techniques) & ENN (Edited Nearest Neighbour), to solve class imbalance and data outliers issues. Also, by exploiting popular statistical correlation methods, ANOVA Test Chi-Square Test, we have identified 23 most significant metabolic and clinical parameters that best classify PCOS conditions. Finally, we experimented with our model on a benchmark dataset collected from Kaggle to justify the effectiveness of our proposed findings where the Extreme Gradient Boosting classifier outperformed all other classifiers with a 10 Fold Cross-validation score of 96.03 % all over, along with a 98% Recall in the detection of patients not having PCOS, which outperforms all the existing recent methods where the numerical data-driven diagnosis of PCOS have been studied on this particular dataset.
- Published
- 2021
38. A Hybrid Probabilistic Ensemble based Extreme Gradient Boosting Approach For Breast Cancer Diagnosis
- Author
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Rizwan Hasan, Fahim Irfan Alam, and Muhammad Sakib Khan Inan
- Subjects
Boosting (machine learning) ,Computer science ,business.industry ,0206 medical engineering ,Feature extraction ,Probabilistic logic ,02 engineering and technology ,medicine.disease ,Machine learning ,computer.software_genre ,020601 biomedical engineering ,Cross-validation ,k-nearest neighbors algorithm ,Support vector machine ,Breast cancer ,0202 electrical engineering, electronic engineering, information engineering ,medicine ,020201 artificial intelligence & image processing ,Gradient boosting ,Artificial intelligence ,business ,computer - Abstract
Breast cancer has been identified as one of the most common invasive cancers and the second leading cause of cancer death among women. The survival rates have, however, improved dramatically in recent years, thanks to the advances in the screening and treatment process, hugely depending on how early the disease was detected. Along with the physicians, this had also initiated researchers all over the globe to dedicate themselves to extensive research to produce automated diagnosis strategies for breast cancer. Realizing the extraordinary potential of machine learning-based models in the biomedical domain, a large number of diagnosis methods have been proposed in this direction. In our study, we propose a hybrid unique machine learning framework that integrates individual prediction probabilities from 3 machine learning (Logistic Regression, Support Vector Machine, and K Nearest Neighbors) classifiers, then enhances the performance of these 3 classifiers through hybridization, stacking a gradient boosting algorithm over the combination of these classifiers which ultimately results in a 10 Fold Cross Validation Score of 98.4%, Recall of 100% and Precision of 97.3%. Besides, to handle the class imbalance problem we have incorporated SMOTE(Synthetic Minority Oversampling Technique) for minority classes and also Robust Scaling for normalization to deal with outliers in the dataset. In our proposed hybrid solution, we successfully adopted the breast cancer domain in every stage of our framework, starting from data pre-processing, feature extraction and finally classification. Our framework outperformed some recent state of the art studies in the breast cancer domain.
- Published
- 2021
39. Designing and Implementing Cloud Security Using Multi-layer DNA Cryptography in Python
- Author
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S.N. Singh and Md. Irfan Alam
- Subjects
Cloud computing security ,Computer science ,business.industry ,Data security ,Cryptography ,Cloud computing ,Python (programming language) ,Encryption ,law.invention ,DNA computing ,law ,Server ,business ,computer ,Computer network ,computer.programming_language - Abstract
Cloud computing is the latest technology. Provides various on-demand services and online for network services, platform services, data storage, etc. Many organizations are not thrilled with using cloud services due to data security concerns, as the data resides on the cloud service provider's servers. To address this problem, various researchers around the world have applied various approaches to strengthen the security of data stored in cloud computing. The latest development in the field of cryptography is DNA encryption. It arose after the disclosure of the computational ability of deoxyribonucleic acid (DNA). DNA encryption uses DNA as a computational tool along with various molecular techniques to manipulate it. Due to the large storage capacity of DNA, this field is becoming very promising. This paper used a layered DNA encryption method for the data encryption and decryption process. Using the four DNA bases (A, C, G, T), we generate dynamic DNA tables to replace the message characters with a dynamic DNA sequence. The implementation of the proposed approach is performed in Python and the experimental results are verified. The resulting encrypted text contains information that will provide greater security against intruder attacks.
- Published
- 2021
40. Initial Sizing and Sensitivity Analysis of a Personal Air Vehicle
- Author
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Mohammad Irfan Alam
- Subjects
Takeoff and landing ,business.product_category ,Computer science ,Payload ,Multidisciplinary design optimization ,Range (aeronautics) ,Mode (statistics) ,Sensitivity (control systems) ,business ,Sizing ,Automotive engineering ,Airplane - Abstract
Megacities of the world are going through the unprecedented challenge of increasing congestion and frequent traffic jams. There is an immediate demand for a fast, safe, and efficient mode of mass mobility, especially in the densely populated cities of the world. Personal air vehicles could play a vital role in solving the above problems by blending the speed and efficiency of an airplane with the cost and convenience of a car. This paper discusses the initial sizing approach of a personal air vehicle. The objective is to size an electric vertical takeoff and landing (eVTOL) aircraft for the range of 200 km and payload of 200 kg. A dataset of various ongoing eVTOLs under development is used for the initial estimate of weight sizing. A sensitivity analysis is also carried out to study the effect of some design parameters which influence the selection of the final configuration. This study is based on the preliminary investigation and meant to serve as initial steps in the process of problem formulation for multidisciplinary design optimization of the system of transport.
- Published
- 2021
41. A Nonstandard Proof of De Finetti’s Theorem for Bernoulli Random Variables
- Author
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Irfan Alam
- Subjects
Discrete mathematics ,Bernoulli's principle ,Random variable ,Mathematics ,de Finetti's theorem - Published
- 2020
42. Deep integrated pipeline of segmentation guided classification of breast cancer from ultrasound images
- Author
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Muhammad Sakib Khan Inan, Fahim Irfan Alam, and Rizwan Hasan
- Subjects
FOS: Computer and information sciences ,Computer Science - Machine Learning ,Computer Vision and Pattern Recognition (cs.CV) ,Image and Video Processing (eess.IV) ,Signal Processing ,Computer Science - Computer Vision and Pattern Recognition ,FOS: Electrical engineering, electronic engineering, information engineering ,Biomedical Engineering ,Health Informatics ,Electrical Engineering and Systems Science - Image and Video Processing ,Machine Learning (cs.LG) - Abstract
Breast cancer has become a symbol of tremendous concern in the modern world, as it is one of the major causes of cancer mortality worldwide. In this regard, breast ultrasonography images are frequently utilized by doctors to diagnose breast cancer at an early stage. However, the complex artifacts and heavily noised breast ultrasonography images make diagnosis a great challenge. Furthermore, the ever-increasing number of patients being screened for breast cancer necessitates the use of automated end-to-end technology for highly accurate diagnosis at a low cost and in a short time. In this concern, to develop an end-to-end integrated pipeline for breast ultrasonography image classification, we conducted an exhaustive analysis of image preprocessing methods such as K Means++ and SLIC, as well as four transfer learning models such as VGG16, VGG19, DenseNet121, and ResNet50. With a Dice-coefficient score of 63.4 in the segmentation stage and accuracy and an F1-Score (Benign) of 73.72 percent and 78.92 percent in the classification stage, the combination of SLIC, UNET, and VGG16 outperformed all other integrated combinations. Finally, we have proposed an end to end integrated automated pipelining framework which includes preprocessing with SLIC to capture super-pixel features from the complex artifact of ultrasonography images, complementing semantic segmentation with modified U-Net, leading to breast tumor classification using a transfer learning approach with a pre-trained VGG16 and a densely connected neural network. The proposed automated pipeline can be effectively implemented to assist medical practitioners in making more accurate and timely diagnoses of breast cancer., Comment: Accepted for publication as a Research Paper (Journal Article) in Biomedical Signal Processing and Control, Elsevier
- Published
- 2022
43. Integrity verification for an optimized cloud architecture
- Author
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Iqbal Ahmed and Fahim Irfan Alam
- Subjects
Third party auditor ,Advanced encryption standard ,Integrity verification ,Secret sharing scheme ,Cloud architecture - Abstract
Cloud computing has significantly benefited today’s environment of IT industry through its mobility, sustainability, security, cost savings and several other important features. The risk of data loss on cloud in case of dealing with hardware and software is relatively small. However, the issue of data security becomes imminent when we are storing personal data on the cloud which is not transparent to users. In this paper, we introduce a new entity in terms of a virtual machine that provides services and assurance beyond service level agreement (SLA). In the proposed model, a role of data handling and security is assured with association of third party auditor (TPA) by the virtual machine. We further demonstrate the applied technique for encryption, decryption and integrity verification modules. We also upgrade the entropy of the advanced encryption standard (AES) with a variant of secret sharing scheme in the environment of cloud simulator.
- Published
- 2020
44. Abundance-Guided Superpixels and Recurrent Neural Network for Hyperspectral Image Classification
- Author
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Alan Wee-Chung Liew, Fahim Irfan Alam, and Jun Zhou
- Subjects
Endmember ,Spectral signature ,Contextual image classification ,Pixel ,Computer science ,business.industry ,0211 other engineering and technologies ,Hyperspectral imaging ,Pattern recognition ,02 engineering and technology ,010501 environmental sciences ,01 natural sciences ,Convolutional neural network ,Recurrent neural network ,Computer Science::Computer Vision and Pattern Recognition ,Artificial intelligence ,business ,Feature learning ,021101 geological & geomatics engineering ,0105 earth and related environmental sciences - Abstract
Mixed spectral responses from different ground materials often create confusions in complex remote sensing scenes and restrict classification performance. In this regard, unmixing approaches are being successfully carried out to decompose mixed pixels into a collection of spectral signatures. In this paper, we propose a method to integrate unmixing into a deep feature learning model in order to classify hyperspectral data. We propose to generate superpixels from the abundance estimations of the underlying materials of the image obtained from an unsupervised endmember extraction algorithm called vertex component analysis (VCA). The mean abundances of the superpixels are then used as features for a deep classifier. Our proposed deep model, formulated as a joint convolutional neural network and recurrent neural network, receives significant spectral-spatial information in the data to produce better and powerful features and achieve improved classification performance than several alternative methods.
- Published
- 2019
45. Multi-objective multidisciplinary design analyses and optimization of high altitude airships
- Author
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Rajkumar S. Pant and Mohammad Irfan Alam
- Subjects
Optimal design ,020301 aerospace & aeronautics ,0209 industrial biotechnology ,Payload ,Computer science ,Photovoltaic system ,Aerospace Engineering ,02 engineering and technology ,Aerodynamics ,020901 industrial engineering & automation ,0203 mechanical engineering ,Software deployment ,Multidisciplinary approach ,Genetic algorithm ,Systems engineering ,Envelope (motion) - Abstract
High Altitude Airships (HAAs) offer tremendous potential as long-endurance relocatable aerial platforms for several strategic and commercial applications. Design, analyses, and optimization of HAAs involves a complex interplay of various disciplines, and hence a multidisciplinary approach is essential. This paper describes a methodology to obtain the optimal design of an HAA meeting the requirements of onboard payload and power. The methodology couples six mutually interacting disciplines, viz., Environment, Geometry, Energy, Structure, Aerodynamics, and Thermal. The design problem is posed in a multidisciplinary optimization framework involving eleven design variables drawn from these six disciplines, and optimal solutions are obtained using Genetic Algorithm. The methodology obtains the optimal envelope shape, layout of the solar array, and altitude of operation, and determines the most critical day of operation. To demonstrate the efficacy of methodology, the optimal solutions are obtained for five different geographical locations of deployment, and compared with those for a standard envelope shape. A comparative study of these solutions is carried out to highlight the importance of thermal considerations in design optimization. Since the problem involves mutually conflicting disciplines; a multi-objective optimization involving Aerodynamics and Structures are also carried out. It is noticed that operating parameters and thermal behavior have a significant effect on design.
- Published
- 2018
46. Multidisciplinary approach for solar area optimization of high altitude airships
- Author
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Mohammad Irfan Alam and Rajkumar S. Pant
- Subjects
020301 aerospace & aeronautics ,Drag coefficient ,Meteorology ,Renewable Energy, Sustainability and the Environment ,020209 energy ,Photovoltaic system ,Energy Engineering and Power Technology ,02 engineering and technology ,Aerodynamics ,Effects of high altitude on humans ,Fuel Technology ,Altitude ,0203 mechanical engineering ,Nuclear Energy and Engineering ,Software deployment ,0202 electrical engineering, electronic engineering, information engineering ,Environmental science ,Solstice ,Envelope (motion) - Abstract
This paper describes a methodology for determining the optimal envelope shape that minimizes the solar array area of a high altitude airship to be deployed at a specified geographical location. It identifies the critical day of the year and the optimal altitude of deployment on that day, and determines the smallest area of solar array that is just sufficient to meet all the operating requirements. This ensures that the airship can be deployed round the clock throughout the year at that specific geographical location, without any power shortfall. The methodology involves eleven design variables whose values are affected by parameters stemming from four disciplines, viz., Environment, Geometry, Aerodynamics, and Energy. Candidate envelope profiles are generated using a standard shape generation algorithm, and their volumetric drag coefficient is estimated using a surrogate based aerodynamic model. Envelope shapes corresponding to minimum solar area obtained by coupling the methodology to an optimizer based on Genetic Algorithms. To study the effect of the season of deployment, optimal envelope shapes were obtained for deployment on three specific days of the year (viz., Winter solstice, Summer solstice and Equinox) for an assumed altitude of deployment. It was seen that area of solar arrays needed for the airship were 4–9% lower than that for the baseline airship envelope. However, when the altitude of deployment and day of operation were allowed to vary, the optimal envelope shapes obtained had 35% lower solar area.
- Published
- 2018
47. Estimation of Volumetric Drag Coefficient of Two-Dimensional Body of Revolution
- Author
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Mohammad Irfan Alam and Rajkumar S. Pant
- Subjects
Drag coefficient ,Cfd simulation ,Spalart–Allmaras turbulence model ,Angle of attack ,Turbulence ,Aerospace Engineering ,Environmental science ,Shape optimization ,Mechanics ,Body of revolution - Published
- 2019
48. Inspiring Thoughts
- Author
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Irfan Alam and Irfan Alam
- Abstract
About the book:It was the Autumn I buried the seeds of sorrow in my garden and the Spring came they grew into beautiful flowers. Now, people ask me to give us the seeds of the flowers. These deep renderings, great emotions and intuitional thoughts in the form of a book is an attempt to portray life in its many shades and colours. We see this life is a beautiful lie and we have to accept and live by it. So, the book provides us the great lessons about life and its meaning and brings us very close to God taking us away from the darkness into divine light.About the author:Irfan Alam hails from the valley of Jammu and Kashmir, India. He completed his Post Graduation in English Literature, poetry fascinated him right from the very childhood and manifested the dynamic side of his life. The flavours of poetry influenced him in a fantastic way and uses it as a tool of great meaningful expression of ideas and thoughts. This book entitled'Inspiring Thoughts'is an attempt by the author to throw some light on different aspects and shades of life and make us reflect and think about it.
- Published
- 2022
49. An Extended Protected Secret Sharing Scheme
- Author
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Abdul Basit and Irfan Alam
- Subjects
TheoryofComputation_MISCELLANEOUS ,Scheme (programming language) ,Security analysis ,Computer science ,Information security ,Computer security ,computer.software_genre ,Secret sharing ,Set (abstract data type) ,Information sensitivity ,Key (cryptography) ,Protocol (object-oriented programming) ,computer ,computer.programming_language - Abstract
Designing a protocol for the protection of sensitive information from possible thefts, losses, and damages is an important area of research in information security. Secret sharing scheme (SSS) allows a secret to be recovered from a specific set of information. The idea of secret sharing, is to divide the secret into several pieces (or shares) so that secret can be recovered from distributed shares. When shares are released to the network, there is chance to get shares by the adversaries. One of the solution of this problem is protected secret sharing (PSS). In the PSS, shares are used to reconstruct the secret and to establish a secure key between every pair of shareholders. In this paper, we have studied and analyzed the protected secret sharing scheme, and we have proposed an extension of the PSS scheme by using the bivariate polynomial. Where, each shareholder has a pair of shares - one is to reconstruct the secret, and another is for the verification of adversaries.
- Published
- 2019
50. Effects of antiplatelet therapy on stroke risk by brain imaging features of intracerebral haemorrhage and cerebral small vessel diseases: subgroup analyses of the RESTART randomised, open-label trial
- Author
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Rustam Al-Shahi Salman, David P Minks, Dipayan Mitra, Mark A Rodrigues, Priya Bhatnagar, Johann C du Plessis, Yogish Joshi, Martin S Dennis, Gordon D Murray, David E Newby, Peter A G Sandercock, Nikola Sprigg, Jacqueline Stephen, Cathie L M Sudlow, David J Werring, William N Whiteley, Joanna M Wardlaw, Philip M White, Colin Baigent, Daniel Lasserson, Frank Sullivan, Johanna Carrie, Javier Rojas, Shannon Amoils, John Bamford, Jane Armitage, Gabriel Rinkel, Gordon Lowe, Jonathan Emberson, Karen Innes, Lynn Dinsmore, Jonathan Drever, Carol Williams, David Perry, Connor McGill, David Buchanan, Allan Walker, Aidan Hutchison, Christopher Matthews, Ruth Fraser, Aileen McGrath, Ann Deary, Rosemary Anderson, Pauli Walker, Christian Hansen, Richard Parker, Aryelly Rodriguez, Malcolm Macleod, Thomas Gattringer, Jeb Palmer, Eleni Sakka, Jennifer Adil-Smith, David Minks, Johannes du Plessis, Christine Lerpiniere, Richard O'Brien, Seona Burgess, Gillian Mead, Ruth Paulton, Fergus Doubal, Katrina McCormick, Neil Hunter, Pat Taylor, Ruwan Parakramawansha, Jack Perry, Gordon Blair, Allan MacRaild, Adrian Parry-Jones, Mary Johnes, Stephanie Lee, Kelly Marie Shaw, Ilse Burger, Martin Punter, Andrea Ingham, Jane Perez, Zin Naing, Jordi Morell, Tracy Marsden, Andrea Hall, Sally Marshall, Louise Harrison, Rowilson Jarapa, Edith Wood, Victoria O'Loughlin, David Cohen, Silvie Davies, Kelechi Njoku, Mushiya Mpelembue, Laura Burgess, Radim Licenik, Mmua Ngwako, Nabeela Nisar, Rangah Niranchanan, Tatjana Roganova, Rajaram Bathula, Joseph Devine, Anette David, Anne Oshodi, Fenglin Guo, Emmanuelle Owoyele, Varthi Sukdeo, Robert Ballantine, Mudhar Abbdul-saheb, Angela Chamberlain, Aberami Chandrakumar, Philip Poku, Kirsty Harkness, Catrin Blank, Emma Richards, Ali Ali, Faith Kibutu, Olesia Balitska, Kathryn Birchall, Pauline Bayliss, Clare Doyle, Kathy Stocks, Arshad Majis, Jo Howe, Christine Kamara, Luke Barron, Ahmad Maatouk, Ralf Lindert, Katy Dakin, Jessica Redgrave, Biju Bhaskaran, Isam Salih, Debs Kelly, Susan Szabo, Dawn Tomlin, Helen Bearne, Jean Buxton, Pauline Fitzell, Georgina Ayres, Afaq Saulat, Kathleen Horan, Joanne Garfield-Smith, Harbens Bhakri, Paul Guyler, Devesh Sinha, Thayalini Loganathan, Amber Siddiqui, Anwer Siddiqui, Lucy Coward, Swapna Kunhunny, Sharon Tysoe, Rajalakshmi Orath Prabakaran, Shyam Kelavkar, Sindhu Rashmi, David Ngo, Kheng Xiong Ng, Nisha Menon, Sweni Shah, Mark Barber, Derek Esson, Fiona Brodie, Talat Anjum, Mushtaq Wani, Manju Krishnan, Leanne Quinn, Jayne Spencer, Terry Jones, Helen Thompson-Jones, Lynne Dacey, Srikanth Chenna, Sharon Storton, Sarah Thomas, Teresa Beaty, Shelley Treadwell, Caroline Davies, Susan Tucker, Lynda Connor, Peter Slade, Glyn Gainard, Girish Muddegowda, Ranjan Sanyal, Alda Remegoso, Nenette Abano, Chelsea Causley, Racquel Carpio, Stephanie Stevens, Adrian Butler, Resti Varquez, Hayley Denic, Francis Alipio, Andrew Moores, Adrian Barry, Holly Maguire, Jeanette Grocott, Kay Finney, Sue Lyjko, Christine Roffe, Joanne Hiden, Phillip Ferdinand, Vera Cvoro, Khalil Ullah, Nicola Chapman, Mandy Couser, Susan Pound, Sean Mcauley, Senthil Raghunathan, Faye Shelton, Amanda Hedstrom, Margi Godfrey, Diane Havard, Amanda Buck, Kailash Krishnan, Nicola Gilzeane, Jack Roffe, Judith Clarke, Katherine Whittamore, Saima Sheikh, Rekha Keshvara, Carla Jordan, Benjamin Jackson, Gwendoline Wilkes, Jason Appleton, Zhe Law, Oliver Matias, Evangelos Vasileiadis, Cathy Mason, Anthea Parry, Geraldine Landers, Melinda Holden, Basaam Aweid, Khalid Rashed, Linda Balian, Carinna Vickers, Elizabeth Keeling, Sarah Board, Joanna Allison, Clare Buckley, Barbara Williams-Yesson, Joanne Board, Tressy Pitt-Kerby, Alfonso Tanate, Diane Wood, Manohar Kini, Dinesh Chadha, Deborah Walstow, Rosanna Fong, Robert Luder, Tolu Adesina, Jill Gallagher, Hayley Bridger, Elodie Murali, Maneesh Bhargava, Chloe van Someren, Frances Harrington, Abhijit Mate, Ali James, Gillian Courtauld, Christine Schofield, Katja Adie, Linda Lucas, Kirsty Bond, Bev Maund, Sam Ellis, Paul Mudd, Martin James, Samantha Keenan, Angela Bowring, Julie Cageao, Hayley Kingwell, Caroline Roughan, Anthony Hemsley, Jane Sword, David Strain, Keniesha Miller, Anita Goff, Karin Gupwell, Kevin Thorpe, Hedley Emsley, Shuja Punekar, Alison McLoughlin, Sulaiman Sultan, Bindu Gregory, Sonia Raj, Donna Doyle, Keith Muir, Wilma Smith, Angela Welch, Fiona Moreton, Bharath Kumar Cheripelli, Salwa El Tawil, Dheeraj Kalladka, Xuya Huang, Nicola Day, Sankaranarayanan Ramachandran, Caroline Crosbie, Jennifer Elliot, Tony Rudd, Katherine Marks, Ajay Bhalla, Jonathan Birns, Sagal Kullane, Nic Weir, Christopher Allen, Vanessa Pressly, Pam Crawford, Emma Battersby-Wood, Alex Blades, Shuna Egerton, Ashleigh Walters, Sue Evans, James Richard Marigold, Fiona Smith, Gabriella Howard, Imogen Gartrell, Simon Smith, Robyn Creeden, Chloe Cox, Cherish Boxall, Jonathan Hewitt, Claire Nott, Procter Sarah, Jessica Whiteman, Steve Buckle, Rebecca Wallace, Rina Mardania, Jane Gray, Claire Triscott, Anand Nair, Jill Greig, Pratap Rana, Matthew Robinson, Mohammad Irfan Alam, David Werring, Duncan Wilson, Caroline Watchurst, Maria Brezitski, Luci Crook, Ifan Jones, Azra Banaras, Krishna Patel, Renuka Erande, Caroline Hogan, Isabel Hostettler, Amy Ashton, Shez Feerick, Nina Francia, Nnebuife Oji, Emma Elliott, Talal Al-Mayhani, Martin Dennis, Cathie Sudlow, William Whiteley, Dipankar Dutta, Pauline Brown, Deborah Ward, Fiona Davis, Jennifer Turfrey, Chloe Hughes, Kayleigh Collins, Rehana Bakawala, Susan O'Connell, Jon Glass, David Broughton, Dinesh Tryambake, Lynn Dixon, Kath Chapman, Andrew Young, Adrian Bergin, Andrew Sigsworth, Aravind Manoj, Glyn Fletcher, Paula Lopez, Penelope Cox, Mark Wilkinson, Paul Fitzsimmons, Nikhil Sharma, James Choulerton, Denise Button, Lindsey Dow, Lukuman Gbadamoshi, Joanne Avis, Barbara Madigan, Stephanie McCann, Louise Shaw, Deborah Howcroft, Suzanne Lucas, Andrew Stone, Gillian Cluckie, Caroline Lovelock, Brian Clarke, Neha Chopra, Natasha Clarke, Bhavini Patel, Kate Kennedy, Rebecca Williams, Adrian Blight, Joanna O'Reilly, Chukwuka Orefo, Nilofer Dayal, Rita Ghatala, Temi Adedoyin, Fran Watson, Sarah Trippier, Lillian Choy, Barry Moynihan, Usman Khan, Val Jones, Naomi Jeyaraj, Lourda Kerin, Kamy Thavanesan, Divya Tiwari, Chantel Cox, Anja Ljubez, Laura Tucker, Arshi Iqbal, Caroline Bagnall, Marketa Keltos, Josh Roberts, Becky Jupp, Catherine Ovington, Emily Rogers, Owen David, Jo Bell, Barbara Longland, Gail Hann, Martin Cooper, Mohammad Nasar, Anoja Rajapakse, Inez Wynter, Ijaz Anwar, Helen Skinner, Tarn Nozedar, Damian McArdle, Balakrishna Kumar, Susan Crawford, Arunkumar Annamalai, Alex Ramshaw, Clare Holmes, Sarah Caine, Mairead Osborn, Emily Dodd, Peter Murphy, Nicola Devitt, Pauline Baker, Amy Steele, Lucy Belle Guthrie, Samantha Clarke, Ahamad Hassan, Dean Waugh, Emelda Veraque, Linetty Makawa, Mary Kambafwile, Marc Randall, Vasileios Papavasileiou, Claire Cullen, Jenny Peters, Hlaing Thant, Tanya Ingram, Mellor Zoe, Ramesh Durairaj, Melanie Harrison, Sarah Stevenson, Daniela Shackcloth, Jordan Ewing, Victoria Sutton, Mark McCarron, Jacqueline McKee, Mandy Doherty, Ferghal McVerry, Caroline Blair, Mary MacLeod, Janice Irvine, Heather Gow, Jacqueline Furnace, Anu Joyson, Baljit Jagpal, Sarah Ross, Katrina Klaasen, Sandra Nelson, Rebecca Clarke, Nichola Crouch, Beverly MacLennan, Vicky Taylor, Daniel Epstein, Avani Shukla, Vinodh Krishnamurthy, Paul Nicholas, Sammie Qureshi, Adam Webber, Justin Penge, Hawraman Ramadan, Stuart Maguire, Chris Patterson, Ruth Bellfield, Brigid Hairsine, Kelvin Stewart, Michaela Hooley, Outi Quinn, Bella Richard, Sally Moseley, Mandy Edwards, Heidi Lawson, Michelle Tayler, Yogish Pai, Mahesh Dhakal, Bernard Esisi, Sofia Dima, Gemma Marie Smith, Mark Garside, Muhammad Naeem, Vidya Baliga, Gill Rogers, Ellen Brown, David Bruce, Rachel Hayman, Susan Clayton, Ed Gamble, Rebecca Grue, Bethan Charles, Adam Hague, Sujata Blane, Caroline Lambert, Afnan Chaudhry, Thomas Harrison, Kari Saastamoinen, Dionne Hove, Laura Howaniec, Gemma Grimwood, Ozlem Redjep, Fiona Humphries, Lucia Argandona, Larissa Cuenoud, Esther Erumere, Sageet Amlani, Grace Auld, Afraim Salek-Haddadi, Ursula Schulz, James Kennedy, Gary Ford, Philip Mathieson, Ian Reckless, Rachel Teal, Giulia Lenti, George Harston, Eoin O'Brien, Joanne Mcgee, Jennifer Mitchell, Elaine Amis, Dominic Handley, Siobhan Kelly, George Zachariah, Jobbin Francis, Sarah Crisp, Juliana Sesay, Sarah Finlay, Helen Hayhoe, Niamh Hannon, Tom Hughes, Bethan Morse, Henry De Berker, Emma Tallantyre, Ahmed Osman, Susan White, Stefan Schwarz, Benjamin Jelley, Rajendra Yadava, Khalid Azhar, Julie Reddan, Mirriam Sangombe, Samantha Stafford, Ken Fotherby, Debbie Morgan, Farrukh Baig, Karla Jennings-Preece, Donna Butler, Nasar Ahmad, Angela Willberry, Angela Stevens, Baljinder Rai, Prasad Siddegowda, Peter Howard, Lisa Hyatt, Tracey Dobson, David Jarrett, Suheil Ponnambath, Jane Tandy, Yasmin Harrington-Davies, Rebecca Butler, Claire James, Stacey Valentine, Anne Suttling, Peter Langhorne, Gillian Kerr, Fiona Wright, Ruth Graham, Christine McAlpine, Mohammad Shahzad Iqbal, Louise Humphreys, Kath Pasco, Olga Balazikova, Ashraf Nasim, Cassilda Peixoto, Louise Gallagher, Shahrzad Shahmehri, Sandip Ghosh, Elizabeth Barrie, Danielle Gilmour, Margo Henry, Tom Webb, Linda Cowie, Hannah Rudenko, Shanni McDonald, Natasha Schumacher, Susannah Walker, Tracey Cosier, Anna Verrion, Eva Beranova, Audrey Thomson, Marius Venter, Arindam Kar, Sheila Mashate, Kirsten Harvey, Léjeune Gardener, Vinh Nguyen, Omid Halse, Olivia Geraghty, Beth Hazel, Peter Wilding, Victoria Tilley, Tim Cassidy, Beverley McClelland, Maria Bokhari, Timothy England, Mohana Maddula, Richard Donnelly, Paul Findlay, Ashish Macaden, Ian Shread, Charlotte Barr, Azlisham Mohd Nor, Claire Brown, Nicola Persad, Charlotte Eglinton, Marie Weinling, Benjamin Hyams, Alex Shah, John Baker, Anthony Byrne, Caroline McGhee, Amanda Smart, Claire Copeland, Michael Carpenter, Marion Walker, Richard Davey, Ann Needle, Razik Fathima, Gavin Bateman, Prabal Datta, Andrew Stanners, Linda Jackson, Julie Ball, Michelle Davis, Natalie Atkinson, Michelle Fawcett, Teresa Thompson, Helen Guy, Valerie Hogg, Carole Hays, Stephen Woodward, Mohammad Haque, Eluzai Hakim, Stuart Symonds, Mehran Maanoosi, Jane Herman, Toby Black, Skelton Miriam, Caroline Clarke, Alpha Anthony, Michele Tribbeck, Julie Cronin, Denise Mead, Ruth Fennelly, James McIlmoyle, Christina Dickinson, Carol Jeffs, Sajjad Anwar, Joanne Howard, Kirsty Jones, Saikat Dhar, Caroline Clay, Muhammad Siddiq, Simone Ivatts, Yolanda Baird, Moore Sally, Isobel Amey, Sophie Newton, Lisa Clayton-Evans, Indra Chadbourn, Rayessa Rayessa, Charde Naylor, Alicia Rodgers, Lisa Wilson, Sarah Wilson, Emma Clarkson, Ruth Davies, Paula Owings, Graeme Sangster, Valerie Gott, Victoria Little, Pauline Weir, Suja Cherian, Deepa Jose, Helen Moroney, Susan Downham, Angela Dodd, Venetia Vettimootal Johnson, Laura Codd, Naomi Robinson, Ashraf Ahmed, Mo Albazzaz, Sharon Johnson, Carol Denniss, Mishell Cunningham, Tajammal Zahoor, Timothy Webster, Sandra Leason, Syed Haider, Kausic Chatterjee, Arumugam Nallasivan, Charlotte Perkins, Samantha Seagrave, Colin Jenkins, Fiona Price, Claire Hughes, Lily Mercer, Malik Hussain, Sarah Brown, Miriam Harvey, Jane Homan, Mohammad Khan, Robert Whiting, Leanne Foote, Nicholas Hunt, Helen Durman, Lucy Brotherton, Jayne Foot, Corinne Pawley, Eliza Foster, Alison Whitcher, Kneale Metcalf, Jenny Jagger, Susan McDonald, Kelly Waterfield, Patrick Sutton, Naval Shinh, Ajmal Anversha, Garth Ravenhill, Richard Greenwood, Janak Saada, Alison Wiltshire, Rebekah Perfitt, Sreeman Andole, Naveen Gadapa, Karen Dunne, Magdalini Krommyda, Evelyne Burssens, Sam King, Catherine Plewa, Nigel Smyth, Jenny Wilson, Elio Giallombardo, Lucy Sykes, Pradeep Kumar, James Barker, Isabel Huggett, Linda Dunn, Charlotte Culmsee, Philip Thomas, Min Myint, Helen Brew, Nikhil Majmudar, Janice OConnell, George Bunea, Charlotte Fox, Diane Gulliver, Andrew Smith, Betty Mokoena, Naweed Sattar, Ramesh Krishnamurthy, Emily Osborne, David Wilson, Belinda Wroath, Kevin Dynan, Michael Power, Susan Thompson, Victoria Adell, Enoch Orugun, Una Poultney, Rachel Glover, Hannah Crowther, Sarah Thornthwaite, Ivan Wiggam, Aine Wallace, Enda Kerr, Ailsa Fulton, Annemarie Hunter, Suzanne Tauro, Sarah Cuddy, David Mangion, Anne Hardwick, Skarlet Markova, Tara Lawrence, Carmen Constantin, Jo Fletcher, Isobel Thomas, Kerry Pettitt, Lakshmanan Sekaran, Margaret Tate, Kiranjit Bharaj, Rohan Simon, Frances Justin, Sakthivel Sethuraman, Duke Phiri, Niaz Mohammed, Meena Chauhan, Khaled Elfandi, Uzma Khan, David Eveson, Amit Mistri, Lisa Manning, Shagufta Khan, Champa Patel, Mohammed Moqsith, Saira Sattar, Man Yee Lam, Kashif Musarrat, Claire Stephens, Latheef Kalathil, Richard Miller, Maqsud Salehin, Nikki Gautam, Duncan Bailey, Kelly Amor, Julie Meir, Anne Nicolson, Javed Imam, Lisa Wood, Julie White, Mahmud Sajid, George Ghaly, Margaret Ball, Rachel Gascoyne, Harald Proeschel, Simon Sharpe, Sarah Horton, Emily Beaves, Stephanie Jones, Brigitte Yip, Murdina Bell, Linda MacLiver, Brian MacInnes, Don Sims, Jennifer Hurley, Mark Willmot, Claire Sutton, Edward Littleton, Susan Maiden, Rachael Jones, James Cunningham, Carole Green, Michelle Bates, Raj Shekhar, Ellie Gilham, Iman Ahmed, Rachel Crown, Tracy Fuller, Neetish Goorah, Angela Bell, Christine Kelly, Arun Singh, Jamie Walford, Benjamin Tomlinson, Farzana Patel, Stephen Duberley, Ingrid Kane, Chakravarthi Rajkumar, Jane Gaylard, Joanna Breeds, Nicola Gainsborough, Alexandra Pitt-Ford, Emma Barbon, Laura Latter, Philip Thompson, Simon Hervey, Shrivakumar Krishnamoorthy, Joseph Vassallo, Deborah Walter, Helen Cochrane, Meena Srinivasan, Robert Campbell, Denise Donaldson, Nichola Motherwell, Frances Hurford, Indranil Mukherjee, Antony Kenton, Sheila Nyabadza, Irene Martin, Benjamin Hunt, Hardi Hassan, Sarah O'Toole, Bander Dallol, Janet Putterill, Ratneshwari Jha, Rachel Gallifent, Puneet Kakar, Aparna Pusalkar, kelly Chan, Puneet Dangri, Hannah Beadle, Angela Cook, Karen Crabtree, Santhosh Subramonian, Peter Owusu-Agyei, Natalie Temple, Nicola Butterworth-Cowin, Suzanne Ragab, Kerstin Knops, Emma Jinks, Christine Dickson, Laura Gleave, Judith Dube, Jacqui Leggett, Tatiana Garcia, Sissy Ispoglou, Rachel Evans, Sandeep Ankolekar, Anne Hayes, Hlaing Ni, Bithi Rahman, Josette Milligan, Carol Graham, Josin Jose, Breffni Keegan, Jim Kelly, Richard Dewar, James White, Kelly Thomas, Rajkumar, C, University of St Andrews. School of Medicine, University of St Andrews. Sir James Mackenzie Institute for Early Diagnosis, University of St Andrews. Population and Behavioural Science Division, University of St Andrews. Pure Mathematics, University of St Andrews. School of Psychology and Neuroscience, and University of St Andrews. School of Biology
- Subjects
Male ,MICROBLEEDS ,030204 cardiovascular system & hematology ,AMYLOID ANGIOPATHY ,Brain Ischemia ,law.invention ,0302 clinical medicine ,Randomized controlled trial ,law ,Secondary Prevention ,ACUTE ISCHEMIC-STROKE ,Aged, 80 and over ,Aspirin ,Manchester Cancer Research Centre ,medicine.diagnostic_test ,Hazard ratio ,Brain ,Magnetic Resonance Imaging ,Superficial siderosis ,Cerebral Small Vessel Diseases ,Stroke ,Treatment Outcome ,Female ,medicine.drug ,CT ,medicine.medical_specialty ,ANTITHROMBOTIC THERAPY ,Clinical Neurology ,Neuroimaging ,Subgroup analysis ,03 medical and health sciences ,Internal medicine ,medicine ,Journal Article ,Humans ,Aged ,Cerebral Hemorrhage ,business.industry ,ResearchInstitutes_Networks_Beacons/mcrc ,DAS ,Magnetic resonance imaging ,medicine.disease ,SIGNS ,ASPIRIN ,Neurology (clinical) ,Tomography, X-Ray Computed ,business ,SUPERFICIAL SIDEROSIS ,Platelet Aggregation Inhibitors ,030217 neurology & neurosurgery - Abstract
Background: Findings from the RESTART trial suggest that starting antiplatelet therapy might reduce the risk of recurrent symptomatic intracerebral haemorrhage compared with avoiding antiplatelet therapy. Brain imaging features of intracerebral haemorrhage and cerebral small vessel diseases (such as cerebral microbleeds) are associated with greater risks of recurrent intracerebral haemorrhage. We did subgroup analyses of the RESTART trial to explore whether these brain imaging features modify the effects of antiplatelet therapy.Methods: RESTART was a prospective, randomised, open-label, blinded-endpoint, parallel-group trial at 122 hospitals in the UK that assessed whether starting antiplatelet therapy might reduce the risk of recurrent symptomatic intracerebral haemorrhage compared with avoiding antiplatelet therapy. For this prespecified subgroup analysis, consultant neuroradiologists masked to treatment allocation reviewed brain CT or MRI scans performed before randomisation to confirm participant eligibility and rate features of the intracerebral haemorrhage and surrounding brain. We followed participants for primary (recurrent symptomatic intracerebral haemorrhage) and secondary (ischaemic stroke) outcomes for up to 5 years (reported elsewhere). For this report, we analysed eligible participants with intracerebral haemorrhage according to their treatment allocation in primary subgroup analyses of cerebral microbleeds on MRI and in exploratory subgroup analyses of other features on CT or MRI. The trial is registered with the ISRCTN registry, number ISRCTN71907627.Findings: Between May 22, 2013, and May 31, 2018, 537 participants were enrolled, of whom 525 (98%) had intracerebral haemorrhage: 507 (97%) were diagnosed on CT (252 assigned to start antiplatelet therapy and 255 assigned to avoid antiplatelet therapy, of whom one withdrew and was not analysed) and 254 (48%) underwent the required brain MRI protocol (122 in the start antiplatelet therapy group and 132 in the avoid antiplatelet therapy group). There were no clinically or statistically significant hazards of antiplatelet therapy on recurrent intracerebral haemorrhage in primary subgroup analyses of cerebral microbleed presence (2 or more) versus absence (0 or 1) (adjusted hazard ratio [HR] 0·30 [95% CI 0·08–1·13] vs 0·77 [0·13–4·61]; pinteraction=0·41), cerebral microbleed number 0–1 versus 2–4 versus 5 or more (HR 0·77 [0·13–4·62] vs 0·32 [0·03–3·66] vs 0·33 [0·07–1·60]; pinteraction=0·75), or cerebral microbleed strictly lobar versus other location (HR 0·52 [0·004–6·79] vs 0·37 [0·09–1·28]; pinteraction=0·85). There was no evidence of heterogeneity in the effects of antiplatelet therapy in any exploratory subgroup analyses (all pinteraction>0·05).Interpretation: Our findings exclude all but a very modest harmful effect of antiplatelet therapy on recurrent intracerebral haemorrhage in the presence of cerebral microbleeds. Further randomised trials are needed to replicate these findings and investigate them with greater precision.Funding: British Heart Foundation.
- Published
- 2019
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