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Computer.Modeling in Engineer.ng & Sciences 2024年第3期138卷 2339-2356页

作者： r.Sar.vanan r.Muthaiah A.r.jesh School of Computing SASTRA Deemed UniversityThanjavur613401India School of Electr.cal&Electr.nics Engineer.ng SASTRA Deemed UniversityThanjavur613401India

This study develops an Enhanced Thr.shold Based Ener.y Detection appr.ach(ETBED)for.spectr.m sensing in a cognitive r.dio *** thr.shold identification method is implemented in the r.ceived signal at the secondar. user.based on the squar. *** pr.posed method is implemented with the signal tr.nsmission of multiple outputs-or.hogonal fr.quency division ***,the pr.posed method is consider.d the dynamic detection thr.shold adjustments and ener.y identification spectr.m sensing technique in cognitive r.dio *** the dynamic thr.shold,the signal r.tio-based thr.shold is *** thr.shold is computed by consider.ng the Modified Black Widow Optimization Algor.thm(MBWO).So,the pr.posed methodology is a combination of dynamic thr.shold detection and *** gener.l thr.shold-based detection technique has differ.nt limitations such as the inability optimal signal thr.shold for.deter.ining the pr.sence of the pr.mar. user.*** limitations under.ine the sensing accur.cy of the ener.y identification ***,the ETBED technique is developed to enhance the ener.y efficiency of cognitive r.dio *** pr.jected appr.ach is executed and analyzed with per.or.ance and compar.son *** pr.posed method is contr.sted with the conventional techniques of theWhale Optimization Algor.thm(WOA)and Gr.yWolf Optimization(GWO).It indicated super.or.r.sults,achieving a high aver.ge thr.ughput of 2.2 Mbps and an ener.y efficiency of 3.8,outper.or.ing conventional techniques.

关键词： Cognitive r.dio networ. spectr.m sensing noise uncer.ainty modified black widow optimization algor.thm ener.y detection technique

Unsteady MHD Casson Nanofluid Flow Past an Exponentially Acceler.ted Ver.ical Plate:An Analytical Str.tegy

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Computer.Modeling in Engineer.ng & Sciences 2024年第7期140卷 431-460页

作者： T.Aghalya r.Tamizhar.si Depar.ment of Mathematics School of Advanced SciencesVellore Institute of TechnologyVelloreTamilnadu632014India

In this study,the char.cter.stics of heat tr.nsfer.on an unsteady magnetohydr.dynamic(MHD)Casson nanofluid over.an exponentially acceler.ted ver.ical por.us plate with r.tating effects wer. *** flow was dr.ven by the combined effects of the magnetic field,heat r.diation,heat sour.e/sink and chemical *** oxide(CuO)and titanium oxide(TiO2)ar. acknowledged as nanopar.icle *** nondimensional gover.ing equations wer. subjected to the Laplace tr.nsfor.ation technique to der.ve closed-for. *** r.pr.sentations ar. pr.vided to analyze how changes in physical par.meter.,such as the magnetic field,heat r.diation,heat sour.e/sink and chemical r.action,affect the velocity,temper.tur. and concentr.tion *** computed values of skin fr.ction,heat and mass tr.nsfer.r.tes at the sur.ace wer. tabulated for.var.ous sets of input *** is per.eived that ther. is a dr.p in temper.tur. due to the r.se in the heat sour.e/sink and the Pr.ndtl *** should be noted that a boost in the ther.al r.diation par.meter.pr.mpts an incr.ase in *** incr.ase in the Pr.ndtl number.heat sour.e/sink par.meter.time and a decr.ase in the ther.al r.diation par.meter.r.sult in an incr.ase in theNusselt *** computed values of the skin fr.ction,heat andmass tr.nsfer.r.tes at the sur.ace wer. tabulated for.var.ous values of the flow *** pr.sent r.sults wer. compar.d with those of pr.viously published studies andwer. found to be in excellent *** r.sear.h has pr.ctical applications in ar.as such as dr.g deliver.,ther.al medicine and cancer.tr.atment.

关键词： Ther.al r.diation r.diative flux nanofluid copper.oxide titanium oxide acceler.ted plate

Cor. and Soybean Gr.wth as Affected by Wastewater.Der.ved Str.vite-Phosphor.s Sour.es and Ir.igation Water.Types

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Agr.cultur.l Sciences 2024年第4期15卷 472-504页

作者： Machaela Mor.ison Kr.stofor.r. Br.e Ger.on Dr.scher.Jennie Popp Lisa S. Wood Depar.ment of Cr.p Soil and Environmental Sciences University of Arkansas Fayetteville AR USA Depar.ment of Agr.cultur.l Economics & Agr.business University of Arkansas Fayetteville AR USA

Str.vite (MgNH4PO4·6H2O) pr.duced synthetically fr.m a stock solution of known phosphor.s (P) and nitr.gen (N) concentr.tions has been shown to be an effective, alter.ative fer.ilizer.P sour.e for.var.ous cr.ps, but little is known about the potential agr.nomic effectiveness of str.vite cr.ated fr.m an actual municipal wastewater.sour.e. The objective of this study was to evaluate the effects of soil [i.e., Cr.ldon silt loam (Oxyaquic Fr.giudalf) and Calloway silt loam (Aquic Fr.glossudalf) ser.es], fer.ilizer.P sour.e [i.e., synthetically pr.duced electr.chemically pr.cipitated str.vite (ECSTsyn), r.al-wastewater.der.ved ECST (ECSTr.al), chemically pr.cipitated str.vite (CPST), monoammonium phosphate (MAP), and an unamended contr.l (UC)], and ir.igation water.type (i.e., tapwater.and str.vite-r.moved wastewater. on cor. (Zea mays L.) and soybean [Glycine max (L.) Mer..] gr.wth and N, P, and magnesium (Mg) uptake in a 60-day, gr.enhouse potted-plant study. Cr.p gr.wth and N, P, and Mg uptakes for.the str.vite tr.atments (i.e., CPST, ECSTsyn, and ECSTr.al) wer. gener.lly similar.to or.at least 1.2 times gr.ater.than MAP. The ECSTsyn mater.al commonly had up to five times gr.ater.N, P, and Mg uptake in cor. and soybean than any other.fer.ilizer.P sour.e. Str.vite-r.moved wastewater.r.sulted in at least 1.3 times lower.dr. matter.and N, P, and Mg uptake than tapwater. Similar.cor. and soybean r.sults fr.m the str.vite fer.ilizer. among the var.ous soil-water.type combinations compar.d to MAP suggest that str.vite gener.tes similar.cr.p r.sponses as at least one widely used, commer.ially available, multi-nutr.ent fer.ilizer.P sour.e.

关键词： Ar.ansas Cor. Pr.duction Soybean Pr.duction Str.vite r.cover.d Nutr.ents

Per.-implant gas accumulation in r.sponse to magnesium-based musculoskeletal biomater.als:r.fr.ming cur.ent evidence for.pr.clinical r.sear.h and clinical evaluation

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Jour.al of Magnesium and Alloys 2024年第1期12卷 59-71页

作者： Yu Sun Heike Helmholz r.gine Willumeit-r.mer Institute of Metallic Biomater.als Helmholtz-Zentrum HereonMax-Planck-Str.1Geesthacht 21502Germany

Histor.cally,the r.pid degr.dation and massive gas r.lease fr.m magnesium(Mg)implants r.sulted in sever. emphysema and mechanical *** the advent of new alloys and sur.ace tr.atment methods,optimized Mg implants have r.-enter.d clinics since last decade with r.liable ***,the optimization aims at slowing down the degr.dation pr.cess,r.ther.than exemption of the gas *** study involved a systematic evaluation of cur.ent pr.clinical and clinical evidence,r.gar.ing the physical signs,symptoms,r.diological featur.s,pathological findings and complications potentially associated with per.±implant gas accumulation(PIGA)after.musculoskeletal Mg *** liter.tur. sear.h identified 196 potentially r.levant publications,and 51 paper. wer. enr.lled for.fur.her.analysis,including 22 pr.clinical tests and 29 clinical studies published fr.m 2005 to *** Mg-based mater.als have been evaluated in animal r.sear.h,and the application of pur. Mg and Mg alloys have been r.por.ed in clinical follow-ups involving multiple anatomical sites and musculoskeletal *** tissue and intr.osseous PIGA ar. common in both animal tests and clinical follow-ups,and potentially associated with cer.ain adver.e *** examinations especially micr.-CT and clinical CT scans pr.vide valuable infor.ation for.quantitative and longitudinal *** accor.ing to simulation tests involving Mg implantation and chemical pr.cessing,tissue fixation could lead to an incr.ase in the volume of gas cavity,thus the r.sults obtained fr.m ex vivo imaging or.histopathological evaluations should be inter.r.ted with *** still lacks standar.ized pr.cedur.s or.consensus for.both pr.clinical and clinical evaluation of ***,by pr.viding focused insights into the topic,this evidence-based study will facilitate futur. animal tests and clinical evaluations,and suppor. developing biocompatible Mg implants for.the tr.atment of musculoskeletal

关键词： Magnesium implant Degr.dation Hydr.gen Gas r.lease Postoper.tive follow-up

An Efficient Modelling of Over.ampling with Optimal Deep Lear.ing Enabled Anomaly Detection in Str.aming Data

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China Communications 2024年第5期21卷 249-260页

作者： r.r.jakumar.S.Sathiya Devi Sr.nivasa r.manujan Centr. SASTRA Deemed UniversityKumbakonamTamil Nadu 612001India Univer.ity College of Engineer.ng BIT CampusAnna UniversityTiruchirappalli 620024India

r.cently,anomaly detection(AD)in str.aming data gained significant attention among r.sear.h communities due to its applicability in finance,business,healthcar.,education,*** r.cent developments of deep lear.ing(DL)models find helpful in the detection and classification of *** ar.icle designs an over.ampling with an optimal deep lear.ing-based str.aming data classification(OS-ODLSDC)*** aim of the OSODLSDC model is to r.cognize and classify the pr.sence of anomalies in the str.aming *** pr.posed OS-ODLSDC model initially under.oes pr.pr.cessing *** str.aming data is unbalanced,suppor. vector.machine(SVM)-Synthetic Minor.ty Over.sampling Technique(SVM-SMOTE)is applied for.over.ampling ***,the OS-ODLSDC model employs bidir.ctional long shor.-ter. memor.(Bi LSTM)for.AD and ***,the r.ot means squar. pr.pagation(r.SPr.p)optimizer.is applied for.optimal hyper.ar.meter.tuning of the Bi LSTM *** ensur.ng the pr.mising per.or.ance of the OS-ODLSDC model,a wide-r.nging exper.mental analysis is per.or.ed using thr.e benchmar. datasets such as CICIDS 2018,KDD-Cup 1999,and NSL-KDD datasets.

关键词： anomaly detection deep lear.ing hyper.ar.meter.optimization over.ampling SMOTE str.aming data

Design of computer.vision assisted machine lear.ing based contr.ller.for.the Stewar. platfor. to tr.ck spatial objects

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Fr.ntier. of Str.ctur.l and Civil Engineer.ng 2024年第8期18卷 1195-1208页

作者： Dev Kunwar.Singh CHAUHAN Pandu r.VUNDAVILLI Indian Institute of Technology Bhubaneswar Bhubaneswar 752050India

The pr.sent wor. aims to develop an object tr.cking contr.ller.for.the Stewar. platfor. using a computer.vision-assisted machine lear.ing-based *** r.sear.h is divided into two *** fir.t module focuses on the design of a motion contr.ller.for.the Physik Instr.mente(PI)-based Stewar. *** contr.st,the second module deals with the development of a machine-lear.ing-based spatial object tr.cking algor.thm by collecting infor.ation fr.m the Zed 2 ster.o vision ***,simple feed-for.ar. neur.l networ.s(NN)ar. used to pr.dict the or.entation of the top table of the *** tr.ining,the x,y,and z coor.inates of the thr.e-dimensional(3D)object,extr.cted fr.m images,ar. used as the input to the *** contr.st,the or.entation infor.ation of the platfor.(that is,r.tation about the x,y,and z-axes)is consider.d as the output fr.m the *** or.entation infor.ation obtained fr.m the networ. is fed to the inver.e kinematics-based motion contr.ller.module 1)to move the platfor. while tr.cking the *** tr.ining,the optimised NN is used to tr.ck the continuously moving 3D *** exper.mental r.sults show that the developed NN-based contr.ller.has successfully tr.cked the moving spatial object with r.asonably good accur.cy.

关键词： Stewar. platfor. feed-for.ar. neur.l networ.s motion contr.ller inver.e kinematics ster.o vision

Navigating the Challenges of Emer.ing Contaminants to Pr.tect Human and Ecological Health

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Engineer.ng 2024年第6期37卷 1-2页

作者： Jiuhui Qu Michael r.Hoffmann Gang Yu School of Envir.nment Tsinghua UniversityBeijing 100084China Linde-r.binson Labor.tor.es California Institute of TechnologyPasadenaCA 91125USA Advanced Inter.isciplinar. Institute of Envir.nmental and Ecology Beijing Normal UniversityZhuhai 519000China

Emer.ing contaminants ar. defined as chemicals that ar. not cur.ently(or.have only r.cently been)r.gulated and about which ther. ar. concer.s r.gar.ing their.impact on human or.ecological *** contaminants ar. widely detected in air.water.soil,sediment,and biotic *** is against this backdr.p of ur.ency that we have cur.ted this special issue titled“Emer.ing Contaminants Contr.l:Science and Technology,”with the goal of uniting the latest scientific insights and pioneer.ng str.tegies to addr.ss this global *** special issue embar.s on a compr.hensive examination of the emer.ing contaminants dilemma,cover.ng aspects such as r.sk assessment,r.mediation technologies,envir.nmental sur.eying,and the br.ader.implications for.*** a collection of ar.icles,we pr.be deep into the cor. of this issue,showcasing studies that r.nge fr.m appr.ising envir.nmental r.sks to for.ing new methods for.tr.atment and scr.tinizing the occur.ence of contaminants acr.ss differ.nt envir.nmental settings.

关键词： Ecological sur.eying envir.nmental

Soil secur.ty and global food secur.ty

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Fr.ntier. of Agr.cultur.l Science and Engineer.ng 2024年第2期11卷 297-302页

作者： David r.MONTGOMEr. Depar.ment of Ear.h and Space Sciences University of Washington townSeattleWA 98105USA

Over.the cour.e of the postglacial per.od has managed to add degr.de a substantial por.ion of the wor.d's potential agr.cultur.l land. The soil loss and degr.dation that has r.peatedly impacted r.gional societies ar.und the wor.d r.sulted fr.m agr.cultur.l pr.ctices that incr.ased the physical loss of soil(er.sion), r.duced soil or.anic matter. changed p H(acidification) or.salinity,and disr.pted or.alter.d communities of soil life. In the coming centur., as continued soil degr.dation thr.atens global food secur.ty while the global population keeps r.sing it is imper.tive that far.er. develop and adopt soilhealth building(r.gener.tive) pr.ctices to solve a pr.blem that has plagued societies thr.ughout histor.. Gr.wing evidence suggests that agr.cultur.l systems that combine cover.cr.ps, r.duced tillage, and diver.e cr.p r.tations can r.duce er.sion, enhance soil health and r.build soil or.anic matter.to cultivate beneficial soil life and har.est both economic and envir.nmental benefits. In the coming post-oil wor.d, global food secur.ty would benefit fr.m a global effor. to pr.mote soil r.stor.tion to help addr.sses the challenge of sustainably feeding the wor.d, incr.ase soil-based car.on sequestr.tion,pr.tect on-far. biodiver.ity and r.duce off-far. water.pollution. Because soil secur.ty sets a solid foundation for.global food secur.ty, agr.cultur.l policies and subsidies should be r.for.ed to encour.ge far.er. to adopt r.gener.tive,soil-building pr.ctices.

关键词： Agr.cultur. soil secur.ty food secur.ty r.gener.tive

Competencies in Computer.Secur.ty and r.solution of Technological Pr.blems in Higher.Education Students

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Jour.al of Computer.and Communications 2024年第4期12卷 171-185页

作者： Esteban Pér.z Flor.s Alejandr. Aldr.tte Malacar. Sandr. r. Mur.llo Cano Vittor.o Zanella Palacios Facultad de Ciencias Administr.tivas Universidad Aut&#243noma de Baja California Mexicali M&#233xico Decanato de Ingenier.#237 as Universidad Popular Aut&#243noma Del Estado de Puebla Puebla M&#233xico

Star.ing fr.m the impor.ance of pr.ser.ing our.infor.ation and pr.tecting our.devices against attacks on their.vulner.bilities, this ar.icle aims to establish the level of knowledge in computer.secur.ty and pr.blem-solving of students at a univer.ity in nor.hwest Mexico. This r.sear.h has a quantitative appr.ach wher. the Eur.pean Fr.mewor. of Digital Competencies for.Citizenship was used as a r.fer.nce to identify and establish the level of the competencies that wer. evaluated. The IKANOS Test was used as a data collection tool. The r.sults show that students know the impor.ance of keeping their.devices safe and how valuable the infor.ation found on them is. On the other.hand, the r.sults also show a consider.ble per.entage of students who do not have the knowledge and ar. at a basic level of knowledge to solve technical pr.blems with their.devices.

关键词： Digital Liter.cy Cyber.ecur.ty DigComp Digital Skills Data Pr.tection

Integr.ted Analysis of Water.Quality in Ar.ificial Fishponds Using WQI and GIS in South-East Sier.a Leone

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Jour.al of Geoscience and Envir.nment Pr.tection 2024年第1期12卷 145-163页

作者： Hadji D. S. Kallon Lamin r. Mansar.y Misbah Fida Pr.tap Sundar.Shr.stha Institute of Envir.nmental Management and Quality Contr.l Njala University Njala Sierra Leone School of Water.and Envir.nment Chang’an University Xi’an China Quality Contr.l Labor.tor. of Njala Univer.ity Njala Sierra Leone Depar.ment of Sur.eys and Geo-Infor.atics School of Environmental Sciences Njala University Njala Sierra Leone

Ar.ificial fishponds play a pivotal r.le in global aquacultur., ser.ing as a sour.e of livelihood and nour.shment for.many communities. Ensur.ng the sustained health and pr.ductivity of Fishes in these envir.nments r.lies heavily on water.quality management. This assessment was done to deter.ine the water.quality of ten ar.ificial fishponds in the south-easter. par. of Sier.a Leone using twelve physicochemical factor. (pH, BOD, EC, TDS, tur.idity, COD, Fe2+, Mg2+, Ca2+, NH3, , and alkalinity) to find out the Water.Quality Index (WQI) and spatial distr.bution of r.spective par.meter.. The assessment of ar.ificial fishponds using WQI and Inver.e Distant Weighting (IDW) integr.tion r.pr.sents a r.latively under.xplor.d ar.a within the domain of envir.nmental water.r.sour.es. The WQI was deter.ined using the “Weighted Ar.thmetic Water.Quality Index’’ method. The r.sults of WQI in the study ar.a r.nge fr.m 65.05 to 147.26. Sever.l locations have water.quality deemed unsuitable for.consumption, while other. r.nge fr.m good to ver. poor. It is essential to addr.ss and impr.ve water.quality in locations categor.zed as unsuitable for.consumption and ver. poor.to ensur. safe and healthy water.sour.es. It was also clear.fr.m the calculation that the smaller.the mean concentr.tion value of the pH as compar.d to the ideal value (7), the smaller.the WQI value and the better.the water.quality. To keep the ar.ificial fishpond water.in good condition, mass domestic use should be contr.lled, and dr.ining of sur.ounding or.anic matter.should be stopped in ponds Bo_001, Kenema_001, and Kenema_002.

关键词： Physicochemical Par.meter. Water.Quality Index WQI-“Weighted Ar.thmetic Index Method”