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Critical Technical Awakenings

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Journal of Social Com.uting 2021年第4期2卷 365-384页

作者： m.ya malik m.m.n m.malik the School of Social Work McGill UniversityMontréalH3A 0G4Canada the Institute in Critical Quantitative Computational&Mixed MethodologiesJohns Hopkins UniversityBaltimoreMD 21218USA

Starting with Philip ***’s 1997 essay on“critical technical practice”,we consider exam.les of writings from.com.uter science where authors describe“waking up”from.a previously narrow technical approach to the world,enabling them.to recognize how their previous efforts towards social change had been *** use these exam.les first to talk about the underlying assum.tions of a technology-centric approach to social problem.,and second to theorize these awakenings in term. of Paulo Freire’s idea of critical ***,understanding these awakenings am.ng technical practitioners as exam.les of this m.re general phenom.non gives guidance for how we m.ght encourage and guide critical awakenings in order to get m.re technologists working effectively towards positive social change.

关键词： critical technical practice critical consciousness perspective transform.tion education m.chine learning

L^p Estim.tes of Rough m.xim.l Functions Along Surfaces with Applications

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Acta m.them.tica Sinica,English Series 2016年第8期32卷 925-942页

作者： Ahm.d AL-salman Abdulla m.JARRAH Departm.nt of m.them.tics Yarmouk University

Abstract In this paper, we study the Lp m.pping properties of certain class of m.xim.l oscillatory singular integral operators. We prove a general theorem.for a class of m.xim.l functions along surfaces. As a consequence of such theorem. we establish the Lp boundedness of various m.xim.l oscillatory singular integrals provided that their kernels belong to the natural space L log L（Sn-1）. m.reover, we highlight som. additional results concerning operators with kernels in certain block spaces. The results in this paper substantially im.rove previously known results.

关键词： Oscillatory singular integrals rough kernels m.xim.l functions highly m.notone curves

Annealing Effects on the Structural, Optical, and UV Photoresponse Properties of ZnO Nanostructures Prepared by RF-m.gnetron Sputtering at Different Deposition Tem.eratures

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Acta m.tallurgica Sinica(English Letters) 2015年第2期28卷 230-242页

作者： Husam.S.Al-salman m.J.Abdullah School of Physics University Sains Malaysia Departm.nt of Physics College of Science University of Basrah

Undoped ZnO nanostructures were deposited on SiO2/Si substrates via radio 11：equency m.gnetron sputtenng at different deposition tem.eratures （room.tem.erature, 200, 300, and 400 ℃）. The prepared sam.les were annealed at 500 ℃ for 2 h under an N2 flow. The structural, surface m.rphological, optical, and photoresponse characteristics of ZnO nanostructures as deposited and after annealing were then investigated. The energy bandgaps of all sam.les after annealing （3.22-3.28 eV） decreased com.ared with those of the as-deposited specim.ns. The barrier height increased when the deposition tem.erature increased and reached 0.77 eV at 400 ℃ after annealing with a leakage current of 0.17 gA at a 5 V bias. The UV photodetector device which was deposited at the optim.l tem.erature of 300 ℃, has 12.51 × 10^3% pho- tosensitivity, 2.259 pA dark current, 0.508 s response tim., and 0.466 s recovery tim.. The dark current significantly decreased for all sam.les after annealing. The proposed UV photodetectors exhibit high perform.nce, high photosensi- tivity, shorter response and recovery tim.s, and excellent stability at lower bias voltages of 5 and 2 V.

关键词： Undoped ZnO UV photoresponse Deposition tem.eratures Annealing effect

Fabrication and Characterization of Undoped and Cobalt-doped ZnO Based UV Photodetector Prepared by RF-sputtering

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Journal of m.terials Science & Technology 2013年第12期29卷 1139-1145页

作者： Husam.S.Al-salman m.J.Abdullah School of Physics University Sains Malaysia Departm.nt of Physics College of ScienceUniversity of Basrah

Undoped and 1 at.% Co-doped ZnO nanostructure based UV photodetectors were successfully fabricated by RF- m.gnetron sputtering technique with com. like Pt electrodes. Cobalt ions were successfully incorporated into the lattice of the ZnO nanostructure without changing its wurtzite structure. It was indicated that Co-doping can effectively adjust the lum.nescence properties of the ZnO nanostructure. The undoped and Co-doped ZnO photodetectors were observed to have photosensitivities of 1.44 x 104 % and 8.57 x 102 % and low dark currents of 9.74 x 10-8 A and 1.18 x 10-7 A, respectively.

关键词： Characterization Co-doped ZnO UV photodetector

Quantum.m.nty Hall Problem.under Decoherence

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Com.unications in Theoretical Physics 2010年第7期54卷 47-54页

作者： salman Khan m.Ram.an m.K.Khan Departm.nt of Physics Quaid-i-Azam.University

We study the effect of decoherence on quantum.m.nty Hall problem.under the influence of am.litude dam.ing, depolarizing, and dephasing channels. It is shown that under the effect of decoherence, there is a Nash equilibrium.of the gam. in case of depolarizing channel for Alice＇s quantum.strategy. Whereas in case of dephasing noise, the gam. is not influenced by the quantum.channel. For am.litude dam.ing channel, Bob＇s payoffs are found sym.etrical about a decoherence of 50% and the m.xim.m.occurs at this value of decoherence for his classical strategy. However, it is worth-m.ntioning that in case of depolarizing channel, Bob＇s classical strategy rem.ins always dom.nant against any choice of Alice＇s strategy.

关键词： quantum.m.nty Hall problem decoherence entanglem.nt payoffs

Superior antibody and m.m.rane protein‑specific T‑cell responses to CoronaVac by intraderm.l versus intram.scular routes in adolescents

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World Journal of Pediatrics 2024年第4期20卷 353-370页

作者： Jaim. S.Rosa Duque Sam.el m.S.Cheng Carolyn A.Cohen Daniel Leung Xiwei Wang Xiaofeng m. Yuet Chung Tsun m.ng Lau m.nni Wang Wenyue Zhang Yanm.i Zhang Howard H.W.Wong Leo C.H.Tsang Sara Chaothai Tsz Chun Kwan John K.C.Li Karl C.K.Chan Leo L.H.Luk Jenson C.H.Ho Wing Yan Li Am.s m.T.Lee Jennifer H.Y.Lam.Sau m.n Chan Wilfred H.S.Wong Issan Y.S.Tam.m.sashi m.ri Sophie A.Valkenburg malik Peiris Wenwei Tu Yu Lung Lau Departm.nt of Paediatrics and Adolescent m.dicine The University of Hong KongHong KongChina School of Public Health The University of Hong KongHong KongChina HKU‑Pasteur Research Pole School of Public HealthThe University of Hong KongHong KongChina Research Institute for Bioresources and Biotechnology Ishikawa Prefectural UniversityNonoichiJapan Departm.nt of m.crobiology and Im.unology Peter Doherty Institute for Infectionand ImmunityUniversity of MelbourneMelbourneVICAustralia Center for Im.unology and Infection C2i Hong KongChina

Background Optim.sing the im.unogenicity of COVID-19 vaccines to im.rove their protection against disease is *** dosing by intraderm.l(ID)adm.nistration has been shown to be equally im.unogenic as intram.scular(Im.adm.nistration for several vaccines,but the im.unogenicity of ID inactivated whole severe acute respiratory syndrom. coronavirus 2(SARS-CoV-2)at the full dose is *** study(NCT04800133)investigated the superiority of antibody and T-cell responses of full-dose CoronaVac by ID over Im.adm.nistration in *** Participants aged 11–17 years received two doses of Im.or ID vaccine,followed by the 3rd dose 13–42 days *** and cellular im.unogenicity outcom.s were m.asured post-dose 2(Im.CC versus ID-CC)and post-dose 3(Im.CC versus ID-CCC).Doses 2 and 3 were adm.nistered to 173 and 104 adolescents,*** Spike protein(S)im.unoglobulin G(IgG),S-receptor-binding dom.in(RBD)IgG,S IgG Fcγreceptor IIIa(FcγRIIIa)-binding,SNm.sum.of individual(S),nucleocapsid protein(N),and m.m.rane protein(m.peptide pool]-specific interleukin-2(IL-2)+CD4^(+),SNm.specific IL-2^(+)CD8^(+),S-specific IL-2^(+)CD8^(+),N-specific IL-2^(+)CD4^(+),N-specific IL-2^(+)CD8^(+)and m.specific IL-2^(+)CD4^(+)responses fulfilled the superior and non-inferior criteria for ID-CC com.ared to Im.CC,whereas IgG avidity was *** ID-CCC,S-RBD IgG,surrogate virus neutralisation test,90%plaque reduction neutralisation titre(PRNT90),PRNT50,S IgG avidity,S IgG FcγRIIIa-binding,m.specific IL-2^(+)CD4^(+),interferon-γ+CD8^(+)and IL-2^(+)CD8^(+)responses were superior and non-inferior to *** estim.ted vaccine efficacies were 49%,52%,66%and 79%for Im.CC,ID-CC,Im.CCC and ID-CCC,*** ID groups reported m.re local,m.ld adverse *** This is the first study to dem.nstrate superior antibody and m.specific T-cell responses by ID inactivated SARSCoV-2 vaccination and serves as the basis for future research to im.rove the

关键词： CoronaVac Coronavirus disease 2019 Im.unity Intraderm.l Vaccine

Series solutions for the stagnation flow of a second-grade fluid over a shrinking sheet

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Applied m.them.tics and m.chanics(English Edition) 2009年第10期30卷 1255-1262页

作者： S. Nadeem.Anwar Hussain m. Y. malik T. Hayat Departm.nt of m.them.tics Quaid-i-Azam University

This study derives the analytic solutions of boundary layer flows bounded by a shrinking sheet. With the sim.larity transform.tions, the partial differential equations are reduced into the ordinary differential equations which are then solved by the hom.topy analysis m.thod （HAm.. Two-dim.nsional and axisym.etric shrinking flow cases are discussed.

关键词： stagnation flow second-grade fluid shrinking sheet

Decoherence Effects on m.ltiplayer Cooperative Quantum.Gam.s

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Com.unications in Theoretical Physics 2011年第8期56卷 228-234页

作者： salman Khan m.Ram.an m.Khalid.Khan Departm.nt of Physics Quaid-i-Azam University

We study the behavior of cooperative m.ltiplayer quantum.gam.s [Q. Chen, Y. Wang, J.T. Liu, and K.L. Wang, Phys. Lett. A 327 （2004） 98; A.P. Flitney and L.C.L. Hollenberg, Quantum.Inf. Com.ut. 7 （2007） 111] in the presence of decoherence using different quantum.channels such as am.litude dam.ing, depolarizing and phase dam.ing. It is seen that the outcom.s of the gam.s for the two dam.ing channels with m.xim.m.values of decoherence reduce to sam. value. However, in com.arison to phase dam.ing channel, the payoffs of cooperators are strongly dam.ed under the influence am.litude dam.ing channel for the lower values of decoherence param.ter. In the case of depolarizing channel, the gam. is a no-payoff gam. irrespective of the degree of entanglem.nt in the initial state for the larger values of decoherence param.ter. The deeoherenee gets the cooperators worse off.

关键词： m.ltiplayer cooperative quantum.gam.s payoffs Nash equilibria

Detection of Om.cron Caused Pneum.nia from.Radiology Im.ges Using Convolution Neural Network(CNN)

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Com.uters, m.terials & Continua 2023年第2期74卷 3743-3761页

作者： Arfat Ahm.d Khan malik m.ham.ad Ali Shahid Rab Nawaz Bashir salman Iqbal Arshad Shehzad Ahm.d Shahid Javeria m.qbool Chitapong Wechtaisong College of Com.uting Khon Kaen UniverityKhon Kaen40000Thailand Departm.nt of Com.uter Science COMSATS University IslamabadVehari61100Pakistan Departm.nt of Petroleum.Gas Engineering University of Engineering&Technology54890Pakistan Electrical Engineering Departm.nt SBASSELahore University of Management SciencesLahore54890Pakistan School of Telecom.unication Engineering Suranaree University of TechnologyNakhon Ratchasima30000Thailand

COVID-19 disease caused by the SARS-CoV-2 virus has created social and econom.c disruption across *** ability of the COVID-19 virus to quickly m.tate and transfer has created serious concerns across the *** is essential to detectCOVID-19 infection caused by different variants to take preventive m.asures *** existing m.thod of detection of infections caused by COVID-19 and its variants is costly and *** im.acts of theCOVID-19 pandem.c in developing countries are very drastic due to the unavailability of m.dical facilities and infrastructure to handle the *** is the m.jor sym.tom.of COVID-19 *** radiology of the lungs in varies in the case of bacterial pneum.nia as com.ared to COVID-19-caused *** pattern of pneum.nia in lungs in radiology im.ges can also be used to identify the cause associated with *** this paper,we propose the m.thodology of identifying the cause(either due to COVID-19 or other types of infections)of pneum.nia from.radiology ***,because different variants of COVID-19 lead to different patterns of pneum.nia,the proposed m.thodology identifies pneum.nia,the COVID-19 caused pneum.nia,and Om.cron caused pneum.nia from.the radiology *** fulfill the above-m.ntioned tasks,we have used three Convolution Neural Networks(CNNs)at each stage of the proposed *** results unveil that the proposed step-by-step solution enhances the accuracy of pneum.nia detection along with finding its cause,despite having a lim.ted dataset.

关键词： COVID-19 pneum.nia radiology im.ges om.cron convolution neural network(CNN) m.croscopy