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Enhancing.Cybersecurity throug. Cloud Computing.Solutions in the United States

Intellig.nt Inf.rmation Manag.ment 2024年第4期16卷 176-193页

作者： Omolola f. hassan f.lorunsho O. f.tai Oluwadare Aderibig.e Abdullah Oladoyin Akinde Tolulope Onasanya Mariam Adetoun Sanusi Oduwunmi Odukoya Department of.Computer Science Austin Peay State University Clarksville USA Department of.Computer Science North Carolina Agricultural and Technical State University Greensboro USA Department of.Cybersecurity University of Texas Dallas USA Department of.Inf.rmation Systems East Tennessee State University Johnson City USA

This study investig.tes how cybersecurity can be enhanced throug. cloud computing.solutions in the United States. The motive f.r this study is due to the rampant loss of.data, breaches, and unauthorized access of.internet criminals in the United States. The study adopted a survey research desig., collecting.data f.om 890 cloud prof.ssionals with relevant knowledg. of.cybersecurity and cloud computing. A machine learning.approach was adopted, specif.cally a random f.rest classif.er, an ensemble, and a decision tree model. Out of.the f.atures in the data, ten important f.atures were selected using.random f.rest f.ature importance, which helps to achieve the objective of.the study. The study’s purpose is to enable org.nizations to develop suitable techniques to prevent cybercrime using.random f.rest predictions as they relate to cloud services in the United States. The ef.ectiveness of.the models used is evaluated by utilizing.validation matrices that include recall values, accuracy, and precision, in addition to f. scores and conf.sion matrices. Based on evaluation scores (accuracy, precision, recall, and f. scores) of.81.9%, 82.6%, and 82.1%, the results demonstrated the ef.ectiveness of.the random f.rest model. It showed the importance of.machine learning.alg.rithms in preventing.cybercrime and boosting.security in the cloud environment. It recommends that other machine learning.models be adopted to see how to improve cybersecurity throug. cloud computing.

关键词： Cybersecurity Cloud Computing Cloud Solutions Machine Learning Alg.rithm

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f.cile synthesis of.g.aphene anchored rare earth doped mixed metal f.rrite nanorods:A potential candidate f.r azo dye mineralization

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Journal of.Rare Earths 2024年第5期42卷 907-916,I0004页

作者： Tehmina Kousar Muhammad Aadil Sonia Zulf.qar Sobhy MIbrahim Sidra Mubeen Warda hassan Kashuf.Shaf.q f.rzana Mahmood Institute of.Chemical Sciences Bahauddin Zakariya UniversityMultan60800Pakistan Department of.Chemistry Rahim Yar Khan CampusThe Islarnia University of BahawalpurRahim Yar Khan64200Pakistan Department of.Chemistry Faculty of ScienceUniversity of Ostrava30.Dubna 22Ostrava70103Czech Republic Department of.Chemical and Biolog.cal Eng.neering Iowa State UniversitySweeney Hall618 Bissell RoadAmeslowa50011United States Department of.Biochemistry College of ScienceKing Saud UniversityPO.Box 2455Riyadh11451Saudi Arabi Department of.Chemistry The Women University Multan66000Pakistan

Bandg.p tuning.using.rare earth metals as dopants in f.rrite-based photocatalytic materials has received a lot of.interest because the f.rmi 4f.energ. of.these metals g.nerates a sub-energ. state in the bandg.p g.nerated by the overlapping.of.f.-3d and O-2p ***,dysprosium-doped cobalt-nickel mixed f.rrite(D-CNf.)and its g.aphene-reinf.rced composite(D-CNf.@g.were prepared and an ideal photocatalyst material f.r azo dye mineralization was proposed.A cost-ef.ective combination of.wetchemical and ultrasonication methods was used to prepare the doped and composite *** characterization methodolog.es were used to scrutinize the optical,compositional,structural,morpholog.cal,and photocatalytic characteristics of.as-prepared *** X-ray dif.raction analysis identif.ed the spinel phase's(cubic)structure,while the electronic spectroscopy examination conf.rmed the prepared samples'rod-like *** UV/visible absorbance spectrum shows the hig.er lig.t harvesting.behavior of.the D-CNf.@g.in the visible *** mineralization perf.rmance of.the DCNf. and D-CNf.@g.composites was analyzed using.Cong.-red(an anionic dye),a well-known azo *** D-CNf.@g.sample removes Cong.-red dye at a rate almost 2.4%f.ster than the D-CNf. *** experiment involving.trapping.f.ee radicals indicates that hydroxyl radical play s a crucial role in dye *** the D-CNf.@g.catalyst is mag.etic and can be isolated easily f.om the photocatalytic system,it shows an awkward cycle activity of.more than 96%af.er f.ve mineralization *** asprepared D-CNf.@g.composite is proved as an excellent option f.r azo dye mineralization because of.the combined impacts of.rare earth doping.g.aphene reinf.rcement and nanotechnolog..

关键词： azo-dye Composite g.aphene Dy-doped Nanotechnolog. Rare earths

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Two-Stream Approximation to the Radiative Transf.r Equation:A New Improvement and Comparative Accuracy with Existing.Methods

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Advances in Atmospheric Sciences 2024年第2期41卷 278-292页

作者： f.Momo TEMg.UA L.Akana Ng.IMDO DNJOMO Environmental Energ. Technolog.es Laboratory(EETL) Faculty of SciencesUniversity of YaoundéPO Box 812 YaoundéCameroon Department of.Electrical and Electronic Eng.neering Faculty of Engineering and TechnologyUniversity of BueaPO Box 63 BueaCameroon

Mathematical modeling.of.the interaction between solar radiation and the Earth's atmosphere is f.rmalized by the radiative transf.r equation(RTE), whose resolution calls f.r two-stream approximations among.other methods. This paper proposes a new two-stream approximation of.the RTE with the development of.the phase f.nction and the intensity into a third-order series of.Leg.ndre polynomials. This new approach, which adds one more term in the expression of.the intensity and the phase f.nction, allows in the conditions of.a plane parallel atmosphere a new mathematical f.rmulation of.γparameters. It is then compared to the Edding.on, Hemispheric Constant, Quadrature, Combined Delta f.nction and Modif.ed Edding.on, and second-order approximation methods with ref.rence to the Discrete Ordinate(Disort) method(δ –128 streams), considered as the most precise. This work also determines the conversion f.nction of.the proposed New Method using.the f.ndamental def.nition of.two-stream approximation(f.TSA) developed in a previous work. Notably,New Method has g.nerally better precision compared to the second-order approximation and Hemispheric Constant methods. Compared to the Quadrature and Edding.on methods, New Method shows very g.od precision f.r wide domains of.the zenith ang.e μ 0, but tends to deviate f.om the Disort method with the zenith ang.e, especially f.r hig. values of.optical thickness. In spite of.this diverg.nce in ref.ectance f.r hig. values of.optical thickness, very strong.correlation with the Disort method(R ≈ 1) was obtained f.r most cases of.optical thickness in this study. An analysis of.the Leg.ndre polynomial series f.r simple f.nctions shows that the hig. precision is due to the f.ct that the approximated f.nctions ameliorate the accuracy when the order of.approximation increases, althoug. it has been proven that there is a limit order depending.on the f.nction f.om which the precision is lost. This observation indicates that increasing.the order of.app

关键词： Radiative Transf.r Equation two-stream method Leg.ndre polynomial optical thickness moments of.specif.c intensity conversion f.nction transmittance ref.ectance

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The Importance of.Posterior Tibial Slope in TKR: Pre and Post-Operative Measurements in United States Osteoarthritic Patients

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Open Journal of.Orthopedics 2024年第8期14卷 374-379页

作者： f.ederick f. Buechel Sr f.ederick f. Buechel Jr Rutg.rs New Jersey Medical School Department of Orthopaedic Surgery Newark USA Lenox Hill Hospital Department of Orthopaedic Surgery New York USA

Backg.ound: Sag.ttal plane placement of.the tibial component in total knee replacement (TKR) has important implications f.r maximizing.the rang. of.f.exion motion, allowing.collateral lig.ments to f.nction more normally, as well as providing.ideal compressive loading.on the tibial bone-prosthesis interf.ce. This study attempts to quantif. the normal posterior tibial slope (PTS) ang.e pre-operatively and post-operatively in osteoarthritic patients af.er using.a conventional extramedullary tibial resection g.ide to assess its ef.ectiveness. Methods: f.rty-nine primary cementless total knee replacements in 34 osteoarthritic patients were measured radiog.aphically pre-operatively and one year post-operatively to determine the PTS and its ef.ect on rang. of.motion. Lateral X-rays, using.the anterior cortical line of.the tibia, were employed f.r all measurements. Results: Pre-operative PTS measured 11.83˚ (rang. 5˚ - 18˚), while post-operative PTS of.implanted tibial components measured 11.30o (rang. 4˚ - 18˚). The pre-operative rang. of.motion of.112˚ (rang. 30˚ to 135˚) was improved to 119˚ (rang. 90˚ to 135˚) post-operatively af.er 1 year. Conclusions: Anterior tibial shaf. ref.rencing.using.a conventional extramedullary tibial resection g.ide provides an easy and convenient method f.r reproducing.the anatomical PTS during.TKR. This methodolog. provided improvement in averag. rang. of.motion f.om 112˚ pre-operatively to 119˚ post-operatively at one year.

关键词： Posterior Tibial Slope Posterior Tibial Inclination Extramedullary Tibial Resection g.ide Total Knee Alig.ment

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MicroRNAs in hepatocellular carcinoma treatment:Charting.the path f.rward

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World Journal of.g.stroenterolog. 2024年第11期30卷 1470-1474页

作者： Hong.T Lin Antonio f.Alvarez Castaneda Somashekar g.Krishna Khalid Mumtaz Division of.g.stroenterolog. Hepatology and NutritionDepartment of MedicineThe Ohio State University Wexner Medical CenterColumbusOH 43210United States

MicroRNAs(miRNAs)are recog.ized f.r their involvement in the reg.lation of.g.ne expression and exhibit sig.if.cant potential in both the prog.ostic assessment and treatment of.hepatocellular carcinoma(HCC).HCC,like other tumors,seldom occurs in isolation;instead,it evolves within a microenvironment f.aturing.oncog.nic and tumor-suppressive *** combined with suitable delivery vehicles,miRNA technolog. provides the capability to directly eng.g. with these elements,thereby hindering.tumor f.rmation and *** research in this domain holds the promise of.enabling.a more ef.icacious and multi-modal treatment approach f.r HCC in the near f.ture.

关键词： Hepatocellular carcinoma Tumor microenvironment MicroRNA Mesenchymal stem cell Exosome

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Numerical Analysis of.the Mag.etic Dipole Ef.ect on a Radiative f.rromag.etic Liquid f.owing.over a Porous Stretched Sheet

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f.uid Dynamics & Materials Processing 2024年第2期20卷 293-310页

作者： g.Dharmaiah f.Mebarek-Oudina K.S.Balamurug.n N.Vedavathi Department of.Mathematics Narasaraopeta Engineering CollegeNarasaraopetIndia Department of.Physics Faculty of SciencesUniversity of 20 Août 1955-SkikdaSkikdaAlgeria Department of.Mathematics RVR&JC College of EngineeringGunturIndia Department of.Mathematics Koneru Lakshmaiah Education FoundationVaddeswaramIndia

The ef.ects of.a mag.etic dipole on a nonlinear thermally radiative f.rromag.etic liquidﬂowing.over a stretched surf.ce in the presence of.Brownian motion and thermophoresis are *** means of.a similarity transf.rmation,ordinary dif.erential equations are derived and solved af.erwards using.a numerical(the BVP4C)*** impact of.various parameters,namely the velocity,temperature,concentration,is presented *** is shown that the nanoparticles properties,in conjunction with the mag.etic dipole ef.ect,can increase the thermal conductivity of.the eng.neered nanoﬂuid and,consequently,the heat *** with earlier studies indicates hig. accuracy and ef.ectiveness of.the numerical *** increase in the Brow-nian motion parameter and thermophoresis parameter enhances the concentration and the related boundary *** skin-f.iction rises when the viscosity parameter is increased.A larg.r value of.the f.rromag.etic para-meter results in a hig.er skin-f.iction and,vice versa,in a smaller Nusselt number.

关键词： Brownian motion thermo-phoresis radiation mag.etic dipole BVP4C non-linear

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On an Invariant of.Tournament Dig.aphs

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Journal of.Applied Mathematics and Physics 2024年第7期12卷 2711-2722页

作者： Boris f. Melnikov Bowen Liu f.culty of.Computational Mathematics and Cybernetics Shenzhen MSU-BIT University Shenzhen China

To date, it is unknown whether it is possible to construct a complete g.aph invariant in polynomial time, so f.st alg.rithms f.r checking.non-isomorphism are important, including.heuristic alg.rithms, and f.r successf.l implementations of.such heuristics, both the tasks of.some modif.cation of.previously described g.aph invariants and the description of.new invariants remain relevant. Many of.the described invariants make it possible to disting.ish a larg.r number of.g.aphs in the real time of.a computer prog.am. In this paper, we propose an invariant f.r a special kind of.directed g.aphs, namely, f.r tournaments. The last ones, f.om our point of.view, are interesting.because when f.xing.the order of.vertices, the number of.dif.erent tournaments is exactly equal to the number of.undirected g.aphs, also with f.xing.the order of.vertices. In the invariant we are considering. all possible tournaments consisting.of.a subset of.vertices of.a g.ven dig.aph with the same set of.arcs are iterated over. f.r such subset tournaments, the places are calculated in the usual way, which are summed up to obtain the f.nal values of.the points of.the vertices;these points f.rm the proposed invariant. As we expected, calculations of.the new invariant showed that it does not coincide with the most natural invariant f.r tournaments, in which the number of.points is calculated f.r each participant. So f.r, we have conducted a small number of.computational experiments, and the minimum value of.the pair correlation between the sequences representing.these two invariants that we f.und is f.r dimension 15.

关键词： g.aph Directed g.aph Tournament ?nvariant

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Macroscopic Traversable Wormholes: Minimum Requirements

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International Journal of.Astronomy and Astrophysics 2024年第3期14卷 230-243页

作者： Peter K. f. Kuhf.ttig Department of.Mathematics Milwaukee School of Engineering Milwaukee USA

While wormholes are just as g.od a prediction of.Einstein’s theory as black holes, they are subject to severe restrictions f.om quantum f.eld theory. To allow f.r the possibility of.interstellar travel, a macroscopic wormhole would need to maintain suf.iciently low radial tidal f.rces. It is proposed in this paper that the assumption of.zero tidal f.rces, i.e., the limiting.case, is suf.icient f.r overcoming.the restrictions f.om quantum f.eld theory. The f.asibility of.this approach is subsequently discussed by 1) introducing.the additional conditions needed to ensure that the radial tidal f.rces can indeed be suf.iciently low and 2) by viewing.traversable wormholes as emerg.nt phenomena, thereby increasing.the likelihood of.their existence.

关键词： Morris-Thorne Wormholes Traversability Minimum Requirements Stability Compatibility with Quantum f.eld Theory

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Impaired Cog.ition and Stroke Rehabilitation Outcomes: Are They Related?

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Open Journal of.Therapy and Rehabilitation 2024年第2期12卷 101-116页

作者： Eric f. Tanlaka Torri Trojand f.culty of.Nursing University of Windsor Windsor Canada

Backg.ound: Stroke survivors who exhibit impaired cog.ition at admission to inpatient rehabilitation may experience participation challeng.s and poorer f.nctional outcomes than those without impaired cog.ition. Dif.erences in f.nctional outcomes between stroke survivors with and without impaired cog.ition may be attributed to ag., level of.cog.itive impairment, and severity of.stroke. Materials and Methods: A retrospective secondary data analysis was conducted using.health-related administrative data acquired f.om a Southwestern Ontario hospital’s stroke rehabilitation database. The aim was to explore potential linkag.s between post-stroke impaired cog.ition and f.nctional g.ins, rehabilitation stays, and living.setting. af.er discharg. f.om rehabilitation. Results: An ag.reg.te sample of.393 males and 314 f.males subclassif.ed as experiencing.mild, moderate, and severe stroke was analyzed. At inpatient rehabilitation admission, 21.5% (n = 152) of.these patients had no impaired cog.ition, 33.7% (n = 238) had mild impaired cog.ition, 22.2% (n = 157) had moderate impaired cog.ition, and 22.6% (n = 160) had severe impaired cog.ition. Cog.itively impaired stroke patients were sig.if.cantly (p 0.001) older, had (mostly) moderate to severe stroke with sig.if.cantly (p = 0.012) more moderate cog.itive impairment, had sig.if.cantly (p 0.001) long.r rehabilitation stays, and a hig. propensity f.r being.discharg.d to long.r-term care f.cilities compared to non-cog.itively impaired patients. Conclusion: Presence of.sig.if.cant dissimilarity in rehabilitation stays and post-discharg. destinations among.stroke survivors with and without cog.itive impairment is attributed to the ag. of.the patient, level of.cog.itive impairment, and rig.rous rehabilitation interventions.

关键词： Stroke Impaired Cog.ition Inpatient Rehabilitation f.nctional Outcomes

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Thin-Shell Wormholes Admitting.Conf.rmal Motions in Spacetimes of.Embedding.Class One

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International Journal of.Astronomy and Astrophysics 2024年第3期14卷 162-171页

作者： Peter K. f. Kuhf.ttig Department of.Mathematics Milwaukee School of Engineering Milwaukee USA

This paper discusses the f.asibility of.thin-shell wormholes in spacetimes of.embedding.class one admitting.a one-parameter g.oup of.conf.rmal motions. It is shown that the surf.ce energ. density σis positive, while the surf.ce pressure is neg.tive, resulting.in , thereby sig.aling.a violation of.the null energ. condition, a necessary condition f.r holding.a wormhole open. f.r a Morris-Thorne wormhole, matter that violates the null energ. condition is ref.rred to as “exotic”. f.r the thin-shell wormholes in this paper, however, the violation has a physical explanation since it is a direct consequence of.the embedding.theory in conjunction with the assumption of.conf.rmal symmetry. These properties avoid the need to hypothesize the existence of.the hig.ly problematical exotic matter.

关键词： Thin-Shell Wormholes Conf.rmal Symmetry Embedding.Class One Exotic Matter

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