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Chest Radiographs Based Pneumothorax Detection Using Federated Learning

Computer Systems Science & Engineering 2023年第11期47卷 1775-1791页

作者： Ahmad Almadhor Arfat Ahmad Khan Chitapong Wechtaisong iqra yousaf Natalia Kryvinska Usman Tariq Haithem Ben Chikha Department of Computer Engineering and Networks College of Computer and Information SciencesJouf UniversitySakaka72388Saudi Arabia Department of Computer Science College of ComputingKhon Kaen UniversityKhon Kaen40002Thailand School of Telecommunication Engineering Suranaree University of TechnologyNakhon Ratchasima30000Thailand Department of Computer Science and Software Engineering International Islamic UniversityIslamabadPakistan Information Systems Department Faculty of ManagementComenius University in BratislavaOdbojárovBratislava440Slovakia Prince Sattam bin Abdulaziz University AlKharjSaudi Arabia

Pneumothorax is a thoracic condition that occurs when a person’s lungs collapse,causing air to enter the pleural cavity,the area close to the lungs and chest *** most persistent disease,as well as one that necessitates particular patient care and the privacy of their health *** radiologists find it challenging to diagnose pneumothorax due to the variations in *** learning-based techniques are commonly employed to solve image categorization and segmentation ***,it is challenging to employ it in the medical field due to privacy issues and a lack of *** address this issue,a federated learning framework based on an Xception neural network model is proposed in this *** pneumothorax medical image dataset is obtained from the Kaggle *** preprocessing is performed on the used dataset to convert unstructured data into structured information to improve the model’s ***-max normalization technique is used to normalize the data,and the features are extracted from chest Xray *** dataset converts into two windows to make two clients for local model *** neural network model is trained on the dataset individually and aggregates model updates from two clients on the server *** decrease the over-fitting effect,every client analyses the results three *** 1 performed better in round 2 with a 79.0%accuracy,and client 2 performed better in round 2 with a 77.0%*** experimental result shows the effectiveness of the federated learning-based technique on a deep neural network,reaching a 79.28%accuracy while also providing privacy to the patient’s data.

关键词： Privacy preserving pneumothorax disease federated learning chest x-ray images healthcare machine learning deep learning

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Thin-shell wormholes and modified Chaplygin gas with relativistic corrections

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Communications in Theoretical Physics 2023年第12期75卷 84-96页

作者： M Z Bhatti Z yousaf M yousaf Department of Mathematics University of the PunjabQuaid-i-Azam CampusLahore-54590Pakistan

In this paper,we analyze thin-shell wormholes from two identical copies of charged static cylindrically symmetric spacetimes using Visser’s‘cut and paste’approach under the influence of f(R,T)gravity Harko,Lobo,Nojiri,and Odintsov(2011,***.D 84,024020).In this scenario,the modified Chaplygin gas supports the exotic matter in the shell which allows,one to examine the dynamics of constructed *** utilize the junction condition to connect the interior and exterior geometries across the hypersurface and calculate different components of the Lanczos equation recently computed by Roza in Rosa(2021,***.D 103,104069).We analyze the stability of the thin-shell wormhole models under linear perturbations while keeping the cylindrical symmetry and also examine the influence of charge on their *** positive quantity of the second derivative of potential at the throat radius might be interpreted as the stability *** find both unstable and stable wormhole solutions for different parameters included in the equation of state and specific forms of considered gravity and illustrate them theoretically as well as *** examine the impact of electric charge on the stability region of a constructed wormhole,which suggests that a wormhole model with a charge may exhibit more stable behavior compared to an uncharged system.

关键词： wormholes gravitation mathematical and relativistic aspects of cosmology

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Mathematical Analysis for Peristaltic Flow of Two Phase Nanofluid in a Curved Channel

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Communications in Theoretical Physics 2015年第11期64卷 547-554页

作者： S.Nadeem iqra Shahzadi Department of Mathematics Quaid-i-Azam University

This paper describes the theoretical analysis for peristaltic motion of water base nanoBuid containing distinct types of the nanoparticles like Cu,TiO_2,and Al_2O_*** of nano Quid are modelled and simplified by constructing the suppositions of low Reynolds number as well as long wave *** reduced equations are solved *** are represented through *** for the velocity,temperature,pressure rise and stream lines are analyzed *** work presented here is based on the fictitious values,however some other values can be tested experimentally.

关键词： peristaltic flow nanofluid curved channel exact so

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Role of Inclined Magnetic Field and Copper Nanoparticles on Peristaltic Flow of Nanofluid through Inclined Annulus: Application of the Clot Model

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Communications in Theoretical Physics 2017年第6期67卷 704-716页

作者： iqra Shahzadi S.Nadeem Department of Mathematics Quaid-i-Azam University

A genuine neurotic condition is experienced when some blood constituents accumulate on the wall of the artery get withdrew from the wall, again join the circulatory system and coagulation occur. Role of copper nanoparticles and inclined magnetic field on the peristaltic flow of a nanofluid in an annular region of inclined annulus is *** represent the clot model by considering the small artery as an annulus whose outer tube has a wave of sinusoidal nature and inner tube has a clot on its walls. Lubrication approach is used to simplify the problem. Close form solutions are determined for temperature and velocity profile. Impact of related parameters on pressure rise, pressure gradient,velocity and streamlines are interpreted graphically. Comparison among the pure blood and copper blood is presented and analyzed. One main finding of the considered analysis is that the inclusion of copper nanoparticles enlarges the amplitude of the velocity. Therefore, the considered study plays a dominant role in biomedical applications.

关键词： inclined magnetic field copper nanoparticles inclined annulus clot model exact solution

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Energy optimization in the wake of China Pakistan Economic Corridor(CPEC)

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Journal of Control and Decision 2018年第2期5卷 129-147页

作者： yousaf Ali Zaeem Rasheed Noor Muhammad Salman yousaf Department of Management Science&Humanities Ghulam Ishaq Khan Institute of Engineering Sciences&TechnologyTopiPakistan Faculty of Mechanical Engineering Ghulam Ishaq Khan Institute of EngineeringSciences and TechnologyTopiPakistan

The energy crisis has become a significant bottleneck in the country’s economic *** to end this age old problem,we have to capitalize on the chance,China Pakistan Economic Corridor(CPEC)investment provides,to its full *** study aims to help Pakistani government in selecting the best set of CPEC energy priority projects to be completed in the first wave of *** second part of the research guides the small/medium scale industry and business owners to select the best available alternative for tackling the energy shortfall while CPEC projects are in the process of *** electricity shortfall decrease and its impact on various economic/industrial sectors(like services,industrial,textile and agriculture)is also performed to gauge the effect of CPEC on the economy using linear *** decision analysis,the MCDM techniques employed are(AHP)along with(TOPSIS).This research generated a new list of recommended CPEC energy priority projects which are more evenly distributed across the country,catering more,to interest of the country as a *** also concluded solar panels to be the best alternative for small scale businesses,as short term solution while CPEC projects are under construction.

关键词： Energy CPEC priority projects MCDA Short-term solution TOPSIS AHP Pugh method

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Structural Decomposition Analysis to Investigate the Changes in Energy Consumption in Pakistan

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Journal of Systems Science & Complexity 2020年第5期33卷 1497-1515页

作者： ALI yousaf SALEEM Sania Binte SABIR Muhammad Department of Management Science and Humanities Ghulam Ishaq Khan Institute of Engineering SciencesandTechnologyTopiSwabiKPKPakistan NUST Business School National University of Science andTechnologyIslamabadPakistan

The world energy demand is increasing due to rapid growth in the global economy,industrialization,and *** is also confronted with increasing energy demand on one hand and is confronted with the challenge of energy demand-supply gap on the other *** energy is the major driver for growth,it becomes important to investigate the trends of energy consumption in a country and the factors that are most affecting the changes in the use of *** particular study aims to investigate the use of energy by all the economic sectors of Pakistan during 2000–*** major contribution is the first time application of structural decomposition analysi for energy usage along with using Input-Output data for the period of 2002–*** results show the fluctuation of the energy intensity of the sectors throughout the study ***,the overall effect of energy intensity is negative on energy consumption and it shows a negative contribution value of-80.90%for the study ***,the focus on more energy-intensive products like cement,automobiles,iron,steel products and the increasing final demand of the economy contributes to the growth of energy consumption in Pakistan during 2000–2012.

关键词： Energy consumption energy intensity structural decomposition analysis

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EMMS mixture model with size distribution for two-fluid simulation of riser flows

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Particuology 2018年第3期16卷 165-173页

作者： Atta Ullah iqra Jamil Adnan Hamid Kun Hong Department of Chemical Engineering Pakistan Institute of Engineering and Applied Sciences Istamabad 45650 Pakistan Jiangsu Provincial Engineering Laboratory for Biomass Conversion and Process Integration Jiangsu Provincial Engineering Laboratory for Advanced Materials of Salt Chemical Industry Huaiyin Institute of Technology Huaian 223003 China

Further development of an energy-minimization multiscale modeling approach to simulating two-phase flow under turbulent conditions that considers the size distribution of mesoscale structures, i.e. bubbles and clusters, is presented. User-defined values of minimum and maximum cluster or bubble diame- ters were specified. A uniform size distribution was first considered as a test case, in which the drag force comprised contributions from each size group. The mathematical form of the objective function describing the energy for suspension and transport was not altered. The heterogeneity index of this new drag modification was then used to simulate pilot-scale circulating fluidized-bed risers involving Geldart group A particles. The results were validated against available experimental data. The model is capable of capturing both axial and radial profiles of flow-field variables.

关键词： Mesoscale Bubble Cluster EMMS CFD Riser

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Rising incidence of acute hepatitis A among adults and clinical characteristics in a tertiary care center of Pakistan

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World Journal of Virology 2025年第1期14卷 73-82页

作者： Yumna Shahid Amna Subhan Butt iqra Jamali Faisal Wasim Ismail Division of Gastroenterology Department of MedicineAga Khan University HospitalKarachi 74800Pakistan Department of Medicine Aga Khan University HospitalKarachi 74800Pakistan

BACKGROUND For decades,hepatitis A virus(HAV)has been a leading cause of acute hepatitis among children and was less prevalent among ***,recently a paradigm shift has been observed in the epidemiology of HAV,as evident by cases of acute hepatitis due to HAV among *** To estimate frequency of HAV in acute viral hepatitis and compare characteristics in HAV and hepatitis E virus(HEV)*** This was a trend analysis conducted at Aga Khan University Hospital Karachi(Sindh,Pakistan)from February 2024 to May *** aged 18 years and older diagnosed with acute viral hepatitis attributed to hepatotropic viruses in 2024 were *** compare the trend patients admitted with acute hepatitis during 2019-2023 were also *** regarding clinical and laboratory parameters were *** yearly trend of acute hepatitis due to HAV and HEV was analyzed,and comparative analysis was done between HAV and HEV cases among *** A total of 396 patients were found to have acute hepatitis during our study *** was diagnosed in 234 patients(59%)while 157 patients(39.6%)were found to have acute HEV ***,acute hepatitis B virus infection was identified in 3 patients(0.7%),whereas acute hepatitis C virus infection was found in 2(0.5%)cases of acute *** trends showed increasing occurrence of HAV infection among adults over last 5 *** patients with acute HAV were younger than patients with HEV(28 years±8 years vs 30 years±8 years;P<0.01).Higher levels of total bilirubin were seen in HEV infection,while higher levels of alanine transaminase were seen in HAV ***,a higher proportion of acute liver failure(ALF),coagulopathy,and mortality were observed in *** An increase in acute hepatitis A cases among adults shows less severity than hepatitis E,highlighting the need for better sanitation,hygiene,and adult hepatitis A vaccination programs.

关键词： Acute hepatitis Hepatitis A virus Hepatitis E virus Acute liver failure Hepatotropic virus Vaccination

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Shearfree Spherically Symmetric Fluid Models

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Chinese Physics Letters 2012年第5期29卷 41-44页

作者： M.Sharif Z.yousaf Department of Mathematics University of the PunjabQuaid-e-Azam CampusLahore-54590Pakistan

We attempt to discover some exact analytical models of the spherically symmetric spacetime of collapsing fluid under shearfree *** types of solution are considered:one is to impose a condition on the mass function,while the other is to restrict the *** obtain five exact models in total,and some of them satisfy the Darmoie conditions.

关键词： conditions. exact satisfy

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Effect of rare earth Nd^(3+)doping contents on physical,structural,and magnetic properties of Co-Ni spinel ferrite nanoparticles

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Journal of Rare Earths 2023年第11期41卷 1746-1753,I0004页

作者： Junjiao Li Muhammad yousaf Qaisar Hayat Muhammad Akbar Asma Noor MAK yousaf Shah Fenghua Qi Yuzheng Lu Department of Electronic and Engineering Nanjing Vocational Institute of Mechatronic TechnologyNanjing211306China Energy Storage Joint Research Centre School of Energy and EnvironmentSoutheast UniversityNanjing210096China Shenzhen Key Laboratory of Laser Engineering Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics EngineeringCollege of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen518060China Hubei Collaborative Innovation Centre for Advanced Organic Chemical Materials Faculty of Physics and Electronic ScienceHubei UniversityWuhan430062China College of Electronic and Engineering Nanjing Xiaozhuang UniversityNanjing211171China

Rare earth(RE)low doping has a significant influence on the structural,morphological,and magnetic properties of spinel ferrite ***,rare earth neodymium(Nd)oxide was fully doped into spinel ferrite with a composition of Co_(0.80)Ni_(0.20)Nd_xFe_(2-x)O_4(x=0.0,0.05,0.10,and 0.15)using the sol-gel auto combustion *** analysis of the synthesized samples with low doping of Nd using X-ray diffraction(XRD)and Rietveld refinements reveals a pure single-phase cubic structure,while the second phase appears with increasing content of Nd^(3+)at x=0.10 and *** electron microscopy(SEM)and high-resolution transmission electron microscopy(HR-TEM)show well-shaped spherical grains within the nanometer range of the pure Co_(0.80)Ni_(0.20)Fe_(2)O_(4) sample,while larger grains with the presence of agglomeration are observed with doping of Nd^(3+)into the spinel ferrite *** magnetic parameters,i.e.,saturation magnetization M_s,remanence and magnetic moments exhibit decreasing trend with Nd^(3+)doping and M_s values are in 65.69 to 53.34 emu/g *** coercivity of the Nd-doped Co-Ni spinel ferrite sample was calculated to be 1037.76 to~827.24 *** work demonstrates remarkable improvements in the structural and magnetic characteristics of Nddoped Co-Ni spinel ferrite nanoparticles for multiple versatile applications.

关键词： Co-Ni spinel ferrites Rare earth Nd^(3+)doping Structural analysis Magnetic evaluations

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