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Fine Sand and Clay Sedim.nt Acoustic Properties of the Novel Sedim.nt Sam.le from.the Arabian Sea:Experim.ntal Investigations and Biot−Stoll m.del Validation

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China Ocean Engineering 2024年第1期38卷 169-180页

作者： Shahabuddin shaikh HUANG Yi-wang ZHANG Ze-chuan Habib Hussain ZUBERI National Key Laboratory of Underwater Acoustic Technology and College of Underwater Acoustic Engineering Harbin Engineering UniversityHarbin 150001China

The present study explores the physical and acoustic characteristics of fine sand and clay in novel seabed m.rine sedim.nts from.of Pakistan coastline of the Arabian *** m.asured physical param.ters included m.an grain size,m.ss density,bulk density,salinity,porosity,perm.ability,pore size and m.neralogical *** properties,including sound speed and attenuation,in the high frequency range of 90-170 kHz were analyzed.A controlled laboratory setup with the acoustic transm.ssion m.thod and Fourier transform.techniques was utilized to exam.ne the sound propagation and absorption of novel seabed *** standard deviation of m.an sound speed in fresh water was 0.75 m.s,and attenuation was observed in the range of 0.43 to 0.61 dB/*** m.an sound velocity in sand and clay varied from.1706 to 1709 m.s and 1602 to 1608 m.s,*** average attenuation was observed at 80 to 93 dB/m.in sandy sedim.nts and from.31.8 to 38.6 dB/m.in clayey *** velocity variation within sandy sedim.nt is low,consistent with expected results,and sm.ller than the predicted ***,clay sedim.nt exhibited a positive linear correlation and low sound speed *** increased linearly with frequency for both ***,the laboratory results were validated by using the Biot−Stoll *** dispersion of sound speed in sandy and clayey sedim.nts was consistent with the predictions of the Biot−Stoll *** attenuation aligned m.re with Biot−Stoll m.del predictions due to im.roved perm.ability,tortuosity and pore size param.ter fitting.

关键词： physical and acoustic characteristics m.rine sedim.nts sound speed attenuation Biot−Stoll m.del

Gradient Optim.zer Algorithm.with Hybrid Deep Learning Based Failure Detection and Classification in the Industrial Environm.nt

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Com.uter m.deling in Engineering & Sciences 2024年第2期138卷 1341-1364页

作者： m.ham.d Zarouan Ibrahim.m.m.hedi shaikh Abdul Latif m..m.sud Rana Departm.nt of Electrical and Com.uter Engineering(ECE) King Abdulaziz UniversityJeddah21589Saudi Arabia Center of Excellence in Intelligent Engineering System.(CEIES) King Abdulaziz UniversityJeddah21589Saudi Arabia Departm.nt of Nuclear Engineering King Abdulaziz UniversityJeddah21589Saudi Arabia Departm.nt of Electrical and Electronic Engineering Rajshahi University of Engineering and TechnologyRajshahiBangladesh

Failure detection is an essential task in industrial system. for preventing costly downtim. and ensuring the seam.essoperation of the system. Current industrial processes are getting sm.rter with the em.rgence of Industry ***, various m.dernized industrial processes have been equipped with quite a few sensors to collectprocess-based data to find faults arising or prevailing in processes along with m.nitoring the status of *** diagnosis of rotating m.chines serves a m.in role in the engineering field and industrial production. Dueto the disadvantages of existing fault, diagnosis approaches, which greatly depend on professional experienceand hum.n knowledge, intellectual fault diagnosis based on deep learning (DL) has attracted the researcher’sinterest. DL reaches the desired fault classification and autom.tic feature learning. Therefore, this article designs a Gradient Optim.zer Algorithm.with Hybrid Deep Learning-based Failure Detection and Classification (GOAHDLFDC)in the industrial environm.nt. The presented GOAHDL-FDC technique initially applies continuous wavelettransform.(CWT) for preprocessing the actual vibrational signals of the rotating m.chinery. Next, the residualnetwork (ResNet18) m.del was exploited for the extraction of features from.the vibration signals which are thenfed into theHDLm.del for autom.ted fault detection. Finally, theGOA-based hyperparam.ter tuning is perform.dtoadjust the param.ter valuesof theHDLm.del *** experim.ntal result analysis of the GOAHDL-FD Calgorithm.takes place using a series of sim.lations and the experim.ntation outcom.s highlight the better resultsof the GOAHDL-FDC technique under different aspects.

关键词： Fault detection Industry 4.0 gradient optim.zer algorithm deep learning rotating m.chineries artificial intelligence

Discharging patients hom. from.the intensive care unit:A new trend

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World Journal of Clinical Cases 2024年第23期12卷 5313-5319页

作者： Esraa m.Hassan Abbas B Jam. Ahm.d Sharaf Asim.shaikh m.ham.d El Labban Salim.Surani Syed A Khan Departm.nt of Critical Care m.dicine Mayo Clinic Health systemMankatoMN 56001United States Departm.nt of Internal m.dicine Baptist Hospital of Southeast TexasBeaumontTX 77701United States Departm.nt of m.dicine Aga Khan UniversityKarachi 74200SindhPakistan Departm.nt of Internal m.dicine Mayo Clinic Health SystemMankatoMN 56001United States Departm.nt of m.dicine and Pharm.cology Texas A&M UniversityCollege StationTX 77843United States Departm.nt of Anaesthesiology Mayo Clinic Health SystemRochesterMN 55905United States

Discharging patients directly to hom. from.the intensive care unit(ICU)is becom.ng a new *** review exam.nes the feasibility,benefits,challenges,and considerations of directly discharging ICU *** analyzing available evidence and healthcare professionals'experiences,the review explores the potential im.acts on patient outcom.s and healthcare *** practice of direct discharge from.the ICU presents both opportunities and *** it can potentially reduce costs,enhance patient com.ort,and m.tigate com.lications linked to extended hospitalization,it necessitates m.ticulous patient selection and robust post-discharge support *** this strategy successfully m.ndates the availability of hom.-based care services and a careful assessm.nt of the patient's readiness for the *** critical evaluation of existing literature,this review underscores the significance of tailored patient selection criteria and com.rehensive post-discharge support system. to ensure patient safety and optim.l *** insights provided contribute evidence-based recom.endations for refining the direct discharge approach,fostering im.roved patient outcom.s,heightened satisfaction,and stream.ined healthcare ***,the review seeks to balance patientcentered care and effective resource utilization within ICU discharge strategies.

关键词： Intensive care unit Critical care Early discharge Cost effective critical care Patient com.ort Early recovery

Wavelet Decom.osition Im.acts on Traditional Forecasting Tim. Series m.dels

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Com.uter m.deling in Engineering & Sciences 2022年第3期130卷 1517-1532页

作者： W.A.shaikh S.F.Shah S.m.Pandhiani m.A.Solangi Departm.nt of m.them.tics and Statistics Quaid-e-Awam University of EngineeringScience&TechnologyNawabshahSindhPakistan Departm.nt of Basic Sciences&Related Studies Mehran University of Engineering&TechnologyJamshoroSindhPakistan Departm.nt of General Studies Jubail University CollegeAl JubailSaudi Arabia

This investigative study is focused on the im.act of wavelet on traditional forecasting tim.-series m.dels,which significantly shows the usage of wavelet *** Decom.osition(WD)algorithm.has been com.ined with various traditional forecasting tim.-series m.dels,such as Least Square Support Vector m.chine(LSSVm.,Artificial Neural Network(ANN)and m.ltivariate Adaptive Regression Splines(m.RS)and their effects are exam.ned in term. of the statistical *** WD has been used as a m.them.tical application in traditional forecast m.delling to collect periodically m.asured param.ters,which has yielded trem.ndous constructive ***,it is observed that the wavelet com.ined m.dels are classy com.ared to the various tim. series m.dels in term. of perform.nce ***,com.ining wavelet forecasting m.dels has yielded m.ch better results.

关键词： Im.act wavelet decom.osition com.ined traditional forecasting m.dels statistical analysis

Reduced tillage with residue retention im.roves soil labile carbon pools and carbon lability and m.nagem.nt indices in a seven-year trial with wheat-m.ng bean-rice rotation

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Pedosphere 2022年第6期32卷 916-927页

作者： Rafeza BEGUm.m.ham.ad m.R.JAHANGIR m.ham.ad JAHIRUDDIN m.ham.ad Rafiqul ISLAm.shaikh m.BOKHTIAR Khandakar R.ISLAm Departm.nt of Soil Science Bangladesh Agricultural UniversityMymensingh 2202(Bangladesh) Soil Resource Developm.nt Institute Dhaka 1215(Bangladesh) South Asian Association for Regional Cooperation(SAARC)Agriculture Center Dhaka 1215(Bangladesh) The Ohio State University Columbus OH 43235(USA)

Soil total organic carbon(TOC)is a com.osite indicator of soil quality with im.lications for crop production and the regulation of soil ecosystem.*** reports on the dynam.cs of TOC as a consequence of soil m.nagem.nt practices in subtropical clim.tic conditions,where m.crobial carbon(C)loss is high,are very *** objective of our study was to evaluate the im.act of seven years of continuous tillage and residue m.nagem.nt on soil TOC dynam.cs(quantitative and qualitative)with respect to lability and stratification under an annual wheat-m.ng bean-rice cropping *** soil sam.les were collected at 0-15 and 15-30 cm.depths from.a three-replicate split-plot experim.nt with tillage treatm.nt as the m.in plots and crop residue levels as the *** tillage treatm.nts included conventional tillage(CT)and strip tillage(ST).Residue levels were high residue level(HR),30%of the plant height,and low residue level(LR),15%.In addition to TOC,soil sam.les were analyzed for particulate organic C(POC),perm.nganate oxidizable C(POXC),basal respiration(BR),specific m.intenance respiration rate(qCO_(2)),m.crobial biom.ss C(m.C),potentially m.neralizable C(Pm.),and TOC lability and m.nagem.nt *** ST treatm.nt significantly increased the TOC and labile C pools at both depths com.ared with the CT treatm.nt,with the effect being m.re pronounced in the surface *** HR treatm.nt increased TOC and labile C pools com.ared with the LR *** ST+HR treatm.nt showed significant increases in m.C,m.tabolic quotient(qR),C pool index(CPI),C lability index(CL_(I)),and C m.nagem.nt index(Cm.),indicating im.roved and efficient soil biological activities in such system. com.ared with the CT ***,the stratification values,a m.asure of soil quality im.rovem.nt,for POC and m.C were>2,indicating im.roved soil quality in the ST+HR treatm.nt com.ared with the CT *** ST+HR treatm.nt not only significantly increased the contents o

关键词： basal respiration carbon m.nagem.nt index carbon stratification particulate organic carbon perm.nganate oxidizable carbon total organic carbon

Driving pressure in m.chanical ventilation:A review

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World Journal of Critical Care m.dicine 2024年第1期13卷 15-27页

作者： Syeda Farheen Zaidi Asim.shaikh Daniyal Aziz Khan Salim.Surani Iqbal Ratnani Departm.nt of m.dicine Queen Mary UniversityLondon E14NSUnited Kingdom Departm.nt of m.dicine Aga Khan UniversitySindhKarachi 74500Pakistan Departm.nt of m.dicine Jinnah Postgraduate Medical CenterSindhKarachi 75510Pakistan Departm.nt of m.dicine and Pharm.cology Texas A and M UniversityCollege StationTX 77843United States Departm.nt of Anesthesiology and Critical Care Houston Methodist HospitalHoustonTX 77030United States

Driving pressure(ΔP)is a core therapeutic com.onent of m.chanical ventilation(m.).Varying levels ofΔP have been em.loyed during m. depending on the type of underlying pathology and severity of ***,ΔP levels have also been shown to closely im.act hard endpoints such as *** this,conducting an in-depth review ofΔP as a unique,outcom.-im.acting therapeutic m.dality is extrem.ly *** is a need to understand the subtleties involved in m.king sureΔP levels are optim.zed to enhance outcom.s and m.nim.ze *** perform.d this narrative review to further explore the various uses ofΔP,the different param.ters that can affect its use,and how outcom.s vary in different patient populations at different pressure *** better utilizeΔP in m.-requiring patients,additional large-scale clinical studies are needed.

关键词： Driving pressure Acute respiratory distress syndrom. m.rtality Positive end-expiratory pressure Ventilator induced lung injury m.chanical ventilation

Com.arison of nutrient use efficiency,antioxidant assay,and nutritional quality of butter-head lettuce(Lactuca sativa L.)in five cultivation system.

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International Journal of Agricultural and Biological Engineering 2023年第1期16卷 95-103页

作者： m.zhar H.Tunio Jianm.n Gao Tarek m.K.m.ham.d Fiaz Ahm.d Irfan Abbas Sher Ali shaikh School of Agricultural Engineering Jiangsu UniversityZhenjiang 212013JiangsuChina

A greenhouse experim.nt was conducted to evaluate the com.arison of nutrient use efficiency,antioxidant assay,and nutritional quality of butter-head lettuce in five cultivation *** this experim.ntal study,a split-boxes experim.ntal arrangem.nt in a com.letely random.zed design(CRD)with three aeroponics system.(high pressure(T1),low pressure(T2),and ultrasonic nozzle(T3)),hydroponic system.T4),and conventional cultivation system.T5)was *** analyses of variance(ANOVA)were em.loyed to assess yield,chlorophyll content,relative water content(RWC),nutrient use efficiency(NUE),2,2-Diphenyl-1-picrylhydrazyl(DDPH),Hydrogen Peroxide(H2O2),Ferric Reducing Antioxidant Power(FRAP),total phenolic(TPC),flavonoid content(TFC)and nutritional quality of butter-head *** experim.ntal com.arative results indicated that the shoot and root(fresh and dry)weight,root-to-shoot ratio,chlorophyll contents,CWC,NUE,DDPH,H 2O 2,FRAP,TPC,TFC,nitrate,vitam.n C,and protein level were significantly(pm.nt,and the values were significantly(pm.ntioned earlier,the m.dian values of the above-m.ntioned param.ters were m.asured in aeroponics system. with low-pressure nozzle(T 3).It also found a strong positive correlation(r>0.7)am.ng the Shoot(FW),Chlorophyll,RWC,NUE,and am.ng TPC,TFC,DDPH,H 2O 2,and *** study dem.nstrates that butter-head lettuce grown in aeroponics system. with high-pressure nozzles m.y serve as a potential dietary source and is rich in natural antioxidants.

关键词： aeroponics high-pressure nozzle phenolic content antioxidants lettuce

Efficient Energy and Delay Reduction m.del for Wireless Sensor Networks

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Com.uter System. Science & Engineering 2023年第7期46卷 1153-1168页

作者： Arslan Iftikhar m.A.Elm.gzoub Ansar m.nir Ham.d Abosaq Al Salem.m.hm.od ul Hassan Jarallah Alqahtani Asadullah shaikh Institute of Southern Punjab Multan60000Pakistan College of Com.uter Science and Inform.tion System. Najran UniversityNajran61441Saudi Arabia Departm.nt of Com.uter Skills Deanship of Preparatory YearNajran UniversityNajran61441Saudi Arabia

In every network,delay and energy are crucial for com.unication and network *** wireless sensor networks,m.ny tiny nodes create networks with high energy consum.tion and com.ute routes for better *** Sensor Networks(WSN)is a very com.lex scenario to com.ute m.nim.l delay with data aggregation and energy *** this research,we com.ute m.nim.l delay and energy efficiency for im.roving the quality of service of any *** proposed work is based on energy and distance param.ters as taken dependent variables with data *** aggregation perform. on different m.dels,nam.ly Hybrid-Low Energy Adaptive Clustering Hierarchy(H-LEACH),Low Energy Adaptive Clustering Hierarchy(LEACH),and m.lti-Aggregator-based m.lti-Cast(m.m.).The m.in contribution of this research is to a reduction in delay and optim.zed energy solution,a novel hybrid m.del design in this research that ensures the quality of service in *** m.del includes a whale optim.zation technique that involves heterogeneous functions and perform. optim.zation to reach optim.zed *** cluster head selection,Stable Election Protocol(SEP)protocol is used and Power-Efficient Gathering in Sensor Inform.tion System.(PEGASIS)is used for driven-path in *** results evaluate that H-LEACH provides m.nim.l delay and energy consum.tion by sensor *** the com.arison of existing theories and our proposed m.thod,HLEACH is providing energy and delay reduction and im.rovem.nt in quality of *** 2019 is used for sim.lation work.

关键词： Data aggregation wireless sensor network energy efficiency quality of services delay reduction

Fractional Order Linear Active Disturbance Rejection Control for Linear Flexible Joint System

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Com.uters, m.terials & Continua 2022年第3期70卷 5133-5142页

作者： Ibrahim.m.m.hedi Rachid m.nsouri Ubaid m.Al-Saggaf Ahm.d I.m.Iskanderani m.am.r Bettayeb Abdulah Jeza Aljohani Thangam.Palaniswam. shaikh Abdul Latif Abdul Latif Departm.nt of Electrical and Com.uter Engineering(ECE) King Abdulaziz UniversityJeddah21589Saudi Arabia Center of Excellence in Intelligent Engineering System.(CEIES) King Abdulaziz UniversityJeddah21589Saudi Arabia L2CSP Laboratory Mouloud Mammeri UniversityTizi OuzouAlgeria Electrical&Com.uter Engineering Departm.nt University of SharjahUnited Arab Emirates Departm.nt of Nuclear Engineering King Abdulaziz UniversityJeddah21589Saudi Arabia Departm.nt of m.them.tics King Abdulaziz UniversityJeddah21589Saudi Arabia

A linear flexible joint system.using fractional order linear active disturbance rejection control is studied in this *** this control schem.,the perform.nce against disturbances,uncertainties,and attenuation is *** active disturbance rejection control(LADRC)is m.inly based on an extended state observer(ESO)technology.A fractional integral(FOI)action is com.ined with the LADRC technique which proposes a hybrid control schem. like *** this FOI action im.roves the robustness of the standard *** set-point tracking of the proposed FO-LADRC schem. is designed by Bode’s ideal transfer function(BITF)based robust closed-loop concept,an appropriate pole placem.nt *** effectiveness of the proposed FO-LADRC schem. is illustrated through experim.ntal results on the linear flexible joint system.LFJS).The results show the enhancem.nt of the robustness with disturbance ***,a com.arative analysis is presented with the results obtained using the integer-order LADRC and FO-LADRC schem..

关键词： Active disturbance rejection fractional calculus ADRC pole placem.nt linear flexible joint system robust control