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Generalized Supersymmetric Perturbation Theory

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Chinese Physics Letters 2004年第12期21卷 2330-2333页

作者： b.Goenül DepartmentofEngineeringPhysics UniversityofGaziantep27310GaziantepTurkey

Using the basic ingredient of supersymmetry, a simple alternative approach is developed to perturbation theory in one-dimensional non-relativistic quantum mechanics. The formulae for the energy shifts and wavefunctions do not involve tedious calculations which appear in the available perturbation theories. The model applicable in the same form to both the ground state and excited bound states, unlike the recently introduced supersymmetric perturbation technique which, together with other approaches based on logarithmic perturbation theory, are involved within the more general framework of the present formalism.

关键词： Quantum information and quantum mechanics

Forced motion of an elastic filament through a narrow tube

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Acta Mechanica Sinica 2015年第6期31卷 789-790页

作者： L.b.Freund Department of Materials Science and Engineering University of Illinois at Urbana Champaign

A polymer filament consisting of many similar molecules linked in a one-dimensional array is very flexible. As a result, shapes with a relatively large curvature can be accommodated elastically. When loosely confined in a thermal environment, such a flexible strand may become tangled owing to its flexibility. When confined within a narrow ＂tube＂ over its full length, a flexible molecule may behave quite differently. Here, we consider the qualitative nature of deformation of an individual filament when confined within a tube. Commonly the tube is formed within the cluster by a large number of surrounding filaments of the same type.

关键词： Statistical mechanics. biofilament. Reptation Partition function

Experimental study on the partition behaviour of Ta, Nb and W between different phases in the processes of crystallization differentiation of albite granitic magma

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Chinese Science bulletin 1997年第16期42卷 1372-1377页

作者： Zhao, JS Zhao, b Rao, b Chinese Acad Sci Guangzhou Inst Geochem Guangzhou 510640 Peoples R China Nanjing Univ Dept Earth Sci Nanjing 210008 Peoples R China

To counter the lack of consensus of opinion on mineralizations of Ta, Nb and W which have genetic relationship to fluorine-rich albite granite and the want of experimental evidence at present, some experiments reported in this study were carried out. The purpose of this study is to explain the genetic connection of Ta, Nb and W ore deposits and possible mechanism of their mineralization with the aid of the experimental results.

关键词： partition behaviour of Ta Nb and W process of crystallization differentiation of magma.

Improvement of True Green Porosity, Sinterability and Microstructure in Alumina Ceramics by Filter Pressing

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Journal of Materials Science & Technology 2005年第1期21卷 105-108页

作者： RenjieZENG b.Rand Dept.ofMaterialsScience&Engineering XiamenUniversityXiamen361005China Dept.ofProcess Environment&MaterialsEngineeringLeedsUniversityLeedsLS29JTUK

Comparison between filter pressing and isostatic pressing for submicrometer alumina powder has been systematically made. Obvious improvements in true porosity, sintering behaviour, and microstructure of green compacts... 详细信息

关键词： Porosimetry Agglomerate Sintering dilatometry pH PEG

Conditioned duality between supercontinental’assembly’and’breakup’LIPs

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Geoscience Frontiers 2020年第5期11卷 1635-1649页

作者： Martin b.Klausen Department of Earth Sciences Stellenbosch UniversityPrivate Bag X1MatielandSouth Africa

A compilation of 178 more precise ages on 10 potential Large Igneous Provinces(LIPs)across southern Africa,is compared to Earth’s supercontinental cycles,where 5 more prominent LIP-events all formed during the assembly of supercontinents,rather than during *** temporal bias is confirmed by a focused review of field relationships,where these syn-assembly LIPs formed behind active continental arcs;whereas,the remaining postassembly-and likely breakup-related-LIPs never share such *** the possibility of two radically different LIP-types,only the two younger breakup events(the Karoo LIP and Gannakouriep Suite)produced basalts with more enriched asthenospheric OIb-signatures;whereas,all assembly LIPs produced basalts with stronger lithospheric,as well as more or less primitive asthenospheric,signatures.A counterintuitive observation of Precambrian breakup LIPs outcropping as smaller fragments that are more peripherally located along craton margins,compared to assembly LIPs as well as the Phanerozoic Karoo breakup LIP,is explained by different preservation potentials during subsequent supercontinental ***,further accentuating radical differences between(1)breakup LIPs,preferentially intruding along what evolves to become volcanic rifted margins that are more susceptible to deformation within subsequent orogens,and(2)assembly LIPs,typically emplaced along backarc rifts within more protected cratonic interiors.A conditioned duality is proposed,where assembly LIPs are primarily sustained by thermal blanketing(as well as local arc hydration and rifting)below assembling supercontinents and breakup LIPs more typically form above impinging mantle *** a duality is further related to an overall dynamic Earth model whereby predominantly supercontinent-orientated ocean lithospheric subduction establishes/revitalizes large low shear velocity provinces(LLSVPs)during assembly LIP-activity,and heating of such LLSVPs by the Earth’s core subsequ

关键词： Large igneous provinces Extrovert plate tectonics LLSVP Mantle dynamics Geochemical discrimination

On the pressure and stress singularities induced by steady flows of a pair of nonmiscible,incompressible,viscous fluids in contact with a wall

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Acta Mechanica Sinica 2010年第5期26卷 669-673页

作者： G.b.Sinclair Department of Mechanical Engineering Louisiana State University

Design for structural integrity requires an appreciation of where stress singularities can occur in structural configurations. While there is a rich literature devoted to the identification of such singular behavior in solid mechanics, only of late has there been much in the way of corresponding identifications of flow-induced stress singularities in fluid mechanics. These recent asymptotic identifications are for a single incompressible viscous fluid： Here the asymptotic approach is extended to apply to a configuration entailing two such fluids, For this configuration, various specifications leading to power or log singularities are determined. These results demonstrate that flow-induced stress singularities can occur in a structural container at a location where no singularities are identified within solid mechanics alone.

关键词： Incompressible viscous fluids - Navier-Stokes equations Fluid-structure interactions Stress singularities

A Search on the Klein-Gordon Equation

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Chinese Physics Letters 2006年第10期23卷 2640-2643页

作者： b.Gonül Department of Engineering Physics University of Gaziantep Gaziantep 27310 Turkey

The s-wave Klein-Gordon equation for the bound states is separated in two parts to see clearly the relativistic contributions to the solution in the non-relativistic limit. The reliability of the model is discussed wi... 详细信息

关键词： ARbITRARY DIMENSIONS POTENTIALS COULOMb SCALAR VECTOR DIRAC

An efficient botnet detection approach based on feature learning and classification

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Journal of Control and Decision 2023年第1期10卷 40-53页

作者： b.Padmavathi b.Muthukumar Department of Computer Science and Engineering Sathyabama Institute of Science and TechnologyChennaiIndia Computer Science and Engineering Easwari Engineering CollegeChennaiIndia DMI College of Engineering ChennaiIndia

bot detection is considered a crucial security issue that is extensively analysed in various existingapproaches. Machine Learning is an efficient way of botnet attack detection. bot detectionis the major issue faced by the existing system. This research concentrates on adopting a graphbasedfeature learning process to reduce feature dimensionality. The incoming samples arecorrectly classified and optimised using an Adaboost classifier with an improved grey wolfoptimiser (g-AGWO). The proposed IGWO optimisation approach is adopted to fulfil the multiconstraintissues related to bot detection and provide better local and global solutions (to satisfyexploration and exploitation). The extensive results show that the proposed g-AGWO model outperformsexisting approaches to reduce feature dimensionality, under-fitting/over-fitting andexecution time. The error rate prediction shows the feasibility of the given model to work over thechallenging environment. This model also works efficiently towards the unseen data to achievebetter generalization.

关键词： botnet machine learning Adaboost grey wolf optimisation exploration exploitation

Audio-frequency heating of particulate magnetic systems

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China Particuology 2007年第1期5卷 84-92页

作者： b.E. Kashevsky I.V. Prokhorov S.b. Kashevsky A.V. Luikov Heat and Mass Transfer Institute Belarus Academy of Sciences P. Brovka str. 15 Minsk 220072 Belarus

This paper presents theoretical and experimental studies on the magnetodynamics and energy dissipation in suspensions of small ferromagnetic particles with magnetic hysteresis and mechanical mobility in an AC magnetic field. Energy absorption by particles suspended in a solid, liquid or gas environment and subjected to high frequency magnetic fields is of great interest for cancer treatment by hyperthermia, chemical technology, biotechnology and smart materials science. Sub-micron needle-like γ-Fe2O3 particles dispersed in liquid were subjected in this study to a 430 Hz magnetic field with an intensity of up to 10^5 A/m. Dynamic magnetization loops were measured in parallel to the energy dissipated in the samples. Combined magnetomechanical dynamics of particle dispersions was simulated by using a chain-of-spheres model allowing for incoherent magnetic field reversal. In liquid dispersions, within the kilohertz frequency range, the mechanical mobility of particles does not interfere with their hysteretic magnetic reversal that makes heat release comparable to that observed with solids; for instance, in the present study using γ-Fe2O3 particles in liquid subjected to 10^4 Hz field exhibited heat release rates from 250 up to 600W oer 1 cm^3 of the dry oarticle content.

关键词： AC magnetic field Particulate materials Audio-frequency heating