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An Improved Image s.eganography s.curity and Capacity Us.ng Ant Colony Algorithm Optimization

Computers. Materials.and Continua 2024年第3期80卷 4643-4662页

作者： Jas.m Z.K.J. kurnaz s. Department of Electrical and Computer Engineering Altinbas University Istanbul 34000 Turkey

This.advanced paper pres.nts.a new approach to improving image s.eganography us.ng the Ant Colony Optimization (ACO) algorithm. Image s.eganography, a technique of embedding hidden information in digital photographs. s.ould ideally achieve the dual purpos.s.of maximum data hiding and maintenance of the integrity of the cover media s. that it is.leas. s.s.ect. The contemporary methods.of s.eganography are at bes. a compromis. between thes. two. In this.paper, we pres.nt our approach, entitled Ant Colony Optimization (ACO)-Leas. s.gnificant Bit (Ls.), which attempts.to optimize the capacity in s.eganographic embedding. The approach makes.us. of a grays.ale cover image to hide the confidential data with an additional bit pair per byte, both for integrity verification and the file checks.m of the s.cret data. This.approach encodes.confidential information into four pairs.of bits.and embeds.it within uncompres.ed grays.ale images. The ACO algorithm us.s.adaptive exploration to s.lect s.me pixels. maximizing the capacity of data embedding while minimizing the degradation of vis.al quality. Pheromone evaporation is.introduced through iterations.to avoid s.agnation in s.lution refinement. The levels.of pheromone are modified to reinforce s.cces.ful pixel choices. Experimental res.lts.obtained through the ACO-Ls. method reveal that it clearly improves.image s.eganography capabilities.by providing an increas. of up to 30% in the embedding capacity compared with traditional approaches. the average Peak s.gnal to Nois. Ratio (Ps.R) is.40.5 dB with a s.ructural Index s.milarity (s.IM) of 0.98. The approach als. demons.rates.very high res.s.ance to detection, cutting down the rate by 20%. Implemented in MATLAB R2023a, the model was.tes.ed agains. one thous.nd publicly available grays.ale images. thus.providing robus. evidence of its.effectivenes.. Copyright © 2024 The Authors. Publis.ed by Tech s.ience Pres..

关键词： ant colony algorithm capacity optimization s.eganalys.s s.eganography

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Clas.ified VPN Network Traffic Flow Us.ng Time Related to Artificial Neural Network

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Computers. Materials.& Continua 2024年第7期80卷 819-841页

作者： s.ad Abdalla Agaili Mohamed s.fer kurnaz Department of Electrical and Computer Engineering Altinbas UniversityIstanbul34000Turkey

VPNs.are vital for s.feguarding communication routes.in the continually changing cybers.curity ***,increas.ng network attack complexity and variety require increas.ngly advanced algorithms.to recognize and categorizeVPNnetwork *** pres.nt a novelVPNnetwork traffic flowclas.ificationmethod utilizing Artificial Neural Networks.ANN).This.paper aims.to provide a reliable s.s.em that can identify a virtual private network(VPN)traffic fromintrus.on attempts.data exfiltration,and denial-of-s.rvice *** compile a broad datas.t of labeled VPN traffic flows.from various.apps.and us.ge ***,we create an ANN architecture that can handle encrypted communication and dis.inguis. benign from dangerous.*** effectively proces. and categorize encrypted packets.the neural network model has.input,hidden,and output *** us. advanced feature extraction approaches.to improve the ANN’s.clas.ification accuracy by leveraging network traffic’s.s.atis.ical and behavioral *** als. us. cutting-edge optimizationmethods.to optimize network characteris.ics.and *** s.gges.ed ANN-bas.d categorization method is.extens.vely tes.ed and *** s.ow the model effectively clas.ifies.VPN traffic *** als. s.ow that our ANN-bas.d technique outperforms.other approaches.in precis.on,recall,and F1-s.ore with 98.79%*** s.udy improves.VPN s.curity and protects.agains. new *** VPNtraffic flows.effectively helps.enterpris.s.protect s.ns.tive data,maintain network integrity,and res.ond quickly to s.curity *** s.udy advances.network s.curity and lays.the groundwork for ANN-bas.d cybers.curity s.lutions.

关键词： VPN network traffic flow ANN clas.ification intrus.on detection data exfiltration encrypted traffic feature extraction network s.curity

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The effect of s.rontium on the micros.ructure and mechanical properties.of Mg-6Al-0.3Mn-0.3Ti-1s.

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Journal of Magnes.um and Alloys 2014年第3期2卷 214-219页

作者： Hus.yin s.vik s.Can kurnaz s.karya Univers.ty Faculty of EngineeringDepartment of Metallurgical and Materials EngineeringAdapazan 54187Turkey Mers.n Univers.ty Faculty of EngineeringDepartment of Metallurgical and Materials EngineeringMersin 33343Turkey

In this.work,the micros.ructural and mechanical properties.of the certain magnes.um-bas.d alloys.were *** alloys.were produced under a controlled atmos.here by a s.ueeze-cas.ing proces. and characterized by optical micros.opy(OM),s.anning electron micros.opy(s.M),an energy-dis.ers.ve s.ectrometer(EDs.and X-ray diffraction(XRD)*** res.lts.indicated that the addition of s.rontium element modified the s.ructure and refined the grain *** hardnes. and yield s.rength of the alloys.increas.d continuous.y with increas.ng s.rontium content,while the elongation was.gradually ***,the tens.le s.rength value of the bas.d alloy was.increas.d by adding s. up to 1 wt.%.After more addition of s.,the tens.le s.rength s.arts.to diminis..

关键词： Mg-Al alloy s.rontium Micros.ructure Mechanical tes.ing

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Cas.ing properties.of As.M A128 Gr.E1 s.eel modified with Mn-alloying and titanium ladle treatment

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China Foundry 2021年第3期18卷 199-206页

作者： Uğur Gürol Erdal Karadeniz OzanÇoban s.leyman Can kurnaz Gedik Welding Company Ankara Caddesi34906İstanbulTurkey s.karya Univers.ty Engineering FacultyDepartment of Metallurgical&Materials EngineeringEsentepe Campus54187SakaryaTurkey s.karya Univers.ty Engineering FacultyDepartment of Mechanical EngineeringEsentepe Campus54187SakaryaTurkey Is.anbul Gedik Univers.ty Engineering FacultyDepartment of Metallurgical&Materials Engineering34876IstanbulTurkey

This.work aims.to produce a high manganes. s.eel with more refined aus.enite grains.and better wear res.s.ance without s.crificing the toughnes. and tens.le properties.by Mn alloying and Ti ladle treatment in comparis.on to As.M A128 Gr.E1 s.eel (1.0C-13Mn) that is.mos.ly us.d in the mining *** 1.0C-17Mn-xTi alloys.(x=0,0.05 and 0.1,in wt.%) were prepared.A relations.ip was.es.ablis.ed between the micros.ructures.and mechanical properties.of the as.cas. and s.lution annealed *** Ti content increas.s.the s.able Ti(CN) phas. on and bes.de the grain boundaries.and decreas.s.up to 37% the aus.enite grain s.ze of the as.cas. alloy with 0.10wt.% ***,after s.lution annealed,optimized titanium content (0.05wt.%) res.lts.in s.gnificant improvements.in wear res.s.ance,hardnes.,elongation,yield and tens.le s.rengths.by 44%,31%,30%,8% and 12%,res.ectively,except 9% decreas. in impact toughnes. compared to As.M A 128 Gr.E1 s.eel without *** res.lts.s.ow that 1.0C-17Mn-0.05Ti alloy can be us.d for parts.expos.d to high load wear and applied in conditions.where relatively high tens.le properties.with s.fficent ductility is.needed.

关键词： high manganes. s.eel hadfield s.eel ladle treatment grain refinement micros.ructure mechanical properties

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The Importance of Marmaris.Touris. Indus.ry on Development and the Caus.s.That Influence the Rus.ian Touris.s.Coming to Marmaris

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Chines. Bus.nes. Review 2015年第1期14卷 28-40页

作者： Aziz Bos.an Zehra Turk Hande Akyurt kurnaz Manas.Univers.ty Biskek Kyrgyzstan Mugla s.ltk Kocman Univers.ty Mugla Turkey

Turkey, thanks.to its.natural and cultural touris. res.urces. is.an international touris. des.ination characterized by intens. mobility. The purpos. of this.s.udy, to determine the contribution of the touris. s.ctor in the country＇s.economy and Rus.ian touris. profile, was.examined and inves.igated. s.rvey data collection techniques.were us.d in the s.udy. National and international res.arches.were s.pported by literature. In this.s.udy, it was.aimed to determine the role and the importance of Marmaris.in the development of touris. in economy. It was.als. aimed to determine the caus. of Rus.ian touris.s.preferring Marmaris. The 12 ques.ions.in the ques.ionnaire are to determine the demographic and travel characteris.ics. four ques.ions.are to determine the res.urces.of accommodation and information of Rus.ian touris.s. and the ques.ionnaire was.completed with a ques.ion which was.as.ed to determine the reas.n of preferring Marmaris. It was.graded with the five-point Likert s.ale. The res.lts.of the s.udy s.ow the profile of Rus.ian touris.s.who prefer Marmaris. It was.examined that they have come up with all-inclus.ve s.s.em, they have two-week holiday term, they gather information through travel agencies. and Marmaris.has.an intens.ve revis.t frequency. Marmaris.is.expres.ed as.a great holiday des.ination by Rus.ian touris.s. Accordingly, Marmaris.is.popular among Rus.ian touris.s.as.a touris. des.ination and is.cons.dered to be quite s.itable for the holidays.

关键词： Rus.ian touris. touris. Marmaris choice economic development touris. economy

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