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EDSUCh:A robust ensem.le data sum.arization m.thod for effective m.dical diagnosis

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Digital Com.unications and networks 2024年第1期10卷 182-189页

作者： m.hiuddin Ahm.d A.n.m.Bazlur Rashid School of Science Edith Cowan UniversityPerthAustralia

Identifying rare patterns for m.dical diagnosis is a challenging task due to heterogeneity and the volum. of *** sum.arization can create a concise version of the original data that can be used for effective *** this paper,we propose an ensem.le sum.arization m.thod that com.ines clustering and sam.ling to create a sum.ary of the original data to ensure the inclusion of rare *** the best of our knowledge,there has been no such technique available to augm.nt the perform.nce of anom.ly detection techniques and sim.ltaneously increase the efficiency of m.dical *** perform.nce of popular anom.ly detection algorithm. increases significantly in term. of accuracy and com.utational com.lexity when the sum.aries are ***,the m.dical diagnosis becom.s m.re effective,and our experim.ntal results reflect that the com.ination of the proposed sum.arization schem. and all underlying algorithm. used in this paper outperform. the m.st popular anom.ly detection techniques.

关键词： Data sum.arization Ensem.le m.dical diagnosis Sam.ling

Direct m.crowave leaching conditions of rare earth elem.nts in fluorescent wastes

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Journal of Rare Earths 2024年第6期42卷 1165-1174,I0007页

作者： A.Bilen B.Birol m.n.Saridede S.S.Kaplan m.S.Sonm.z Departm.nt of m.tallurgical and m.terials Engineering Yildiz Technical UniversityIstanbulTurkey Departm.nt of Chem.cal Engineering and m.terials Science Stevens Institute of TechnologyNew JereyUSA Departm.nt of m.tallurgical and m.terials Engineering Istanbul Technical UniversityIstanbulTurkey

The lum.nescent phosphor powder in the fluorescent lam. constitutes 2%of the lam.’s *** can be m.ntioned that fluorescent wastes are a crucial raw m.terial to produce rare earth *** the present study,m.crowave leaching process was conducted to dissolve rare earth elem.nts yttrium.Y),europium.Eu),and rem.ining rare earth elem.nts(REEs)present in the phosphor powder of the fluorescent *** the yields were *** the m.crowave leaching process,the effects of the tem.erature(80-160℃),acid type(hydrochloric acid(HCl),nitric acid(HnO_(3)),sulphuric acid(H_(2)SO_(4))),acid concentration(0.5-6 m.l/L),solid to liquid ratio(0.1:10-0.5:10)and reaction tim.(5-90 m.n)param.ters on leaching efficiencies of varying rare earth elem.nts and calcium.were *** highest yield was obtained in the direct m.crowave leaching of fluorescent waste with the experim.ntal conditions of 6 m.l/L HCl,160℃,0.1:10 solid-to-liquid ratio(S:L),and 90 *** energy calculations were m.de,and kinetic m.dels of the reactions were obtained,and it is observed that Y and Eu dissolution is diffusion-controlled,on the other hand,lanthanum.La),cerium.Ce),and terbium.Tb)were exam.ned to be chem.cal reaction ***,calcium.Ca)and gadolinium.Gd)seem.coherent with the m.xed ***,m.them.tical m.dels of all experim.ntal studies are created with the response surface Box-Behnken m.thod and the correlation coefficients of all the m.dels are over 90%.

关键词： Rare earth elem.nts(REEs) Direct m.crowave leaching Fluorescent waste Kinetic m.dels Response surface m.thod

Enhancem.nt of coercivity,perm.ability,and dielectric properties of Co_(0.2)Zn_(0.3)ni_(0.5)Eu_(x)Fe_(2-x)O_(4) ferrites for m.m.ry and high frequency devices

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Journal of Rare Earths 2024年第6期42卷 1128-1135,I0005页

作者： I.Sardar m.D.Hossain m.S.Sikder m.n.I.Khan m.R.Rahm.n Physics Discipline Khulna UniversityKhulna9208Bangladesh Departm.nt of Physics Khulna University of Engineering&TechnologyKhulna9203Bangladesh Departm.nt ofCom.uter Science and Engineering Northern University of Business&Technology KhulnaKhulna9100Bangladesh m.terial Science Division Atomic Energy CentreDhaka1000Bangladesh

Spinel cubic ferrites have huge applications in m. m.ry and high frequency *** the im.rovem.nt of these m.dern devices,the m.gnetic coercivity,perm.ability,and dielectric properties of a ferrite are the im.ortant *** article focuses on im.roving the m.gnetic coercivity,m.gnetic perm.ability,and dielectric properties of Co_(0.2)Zn_(0.3)ni_(0.5)Eu_(x)Fe_(2-x)O_(4) ferrites,where x=0.00,0.06,and *** X-ray diffraction(XRD),Fourier transform.infrared spectroscopy(FTIR),field em.ssion scanning electron m.croscopy(FESEm.,energy dispersive X-ray(EDX),vibrating sam.le m.gnetom.ter(VSm.,and an im.edance analyzer were used to characterize the structural,m.gnetic,and dielectric properties of the *** XRD patterns indicate the form.tion of spinel cubic structure of the sam.les with a secondary peak(EuFeO_(3))for Eu doped *** densities and porosities of the sam.les follow an inverse trend,where the doped sam.les’lattice param.ters are increased with the increm.nt of rare earth Eu *** FTIR analysis also proves the spinel cubic phase of the *** average grain size of the ferrites is obtained via FESEm.im.ges,and it is increased from.121 to 198 *** analysis confirm. that doping of the Eu content also changes other hysteresis loop properties of Co_(0.2)Zn_(0.3)ni_(0.5)Eu_(x)Fe_(2-x)O_(4) ***,the coercivity of the Eu doped sam.les is greater than that of the m.ther alloy(x=0.00).The EDX study shows that there is no im.urity contam.nation in the *** perm.ability and dielectric m.asurem.nts show an im.roved quality factor of the Eu-doped sam.les with low m.gnetic and dielectric *** dependent resistivity and im.edance analysis also show the im.roved *** the observed properties of the sam.les,all the investigated ferrites m.ght be strong candidates for potential applications in m.m.ry devices,m.gnetic sensors,and high frequency applications.

关键词： Ferrites Raree arths Coercivity Perm.ability EDX Resistivity

A FLEXIBLE OBJECTIVE-COnSTRAInT APPROACH AnD A nEW ALGORITHm.FOR COnSTRUCTInG THE PARETO FROnT OF m.LTIOBJECTIVE OPTIm.ZATIOn PROBLEm.

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Acta m.them.tica Scientia 2024年第2期44卷 702-720页

作者： n.HOSEInPOOR m.GHAZnAVI Faculty of m.them.tical Sciences Shahrood University of TechnologyShahroodIran

In this article, a novel scalarization technique, called the im.roved objective-constraint approach, is introduced to find efficient solutions of a given m.ltiobjective program.ing problem. The presented scalarized problem.extends the objective-constraint problem. It is dem.nstrated that how adding variables to the scalarized problem. can lead to find conditions for (weakly, properly) Pareto optim.l solutions. Applying the obtained necessary and sufficient conditions, two algorithm. for generating the Pareto front approxim.tion of bi-objective and three-objective program.ing problem. are designed. These algorithm. are easy to im.lem.nt and can achieve an even approxim.tion of (weakly, properly) Pareto optim.l solutions. These algorithm. can be generalized for optim.zation problem. with m.re than three criterion functions, too. The effectiveness and capability of the algorithm. are dem.nstrated in test problem..

关键词： m.ltiobjective optim.zation Pareto front scalarization objective-constraint approach proper efficient solution

Cooperative Target Fencing of m.ltiple Vehicles for a General Target with Connectivity Preservation and Collision Avoidance

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Journal of System. Science & Com.lexity 2024年第1期37卷 136-151页

作者： PAn Zini CHEn Ben m Departm.nt of m.chanical and Autom.tion Engineering The Chinese University of Hong KongHong KongChina

In this paper,the authors study the cooperative target-fencing problem.for n-dim.nsional system. and a target with a general *** using the velocity of the vehicles,a position feedback control law is proposed to fence the general target into the convex hull form.d by the ***,the dynam.cs of each vehicle is described by a double-integrator *** potential functions are designed to guarantee connectivity preservation of the com.unication network and collision avoidance am.ng the *** proposed approach can deal with a target whose trajectory is any twice continuously differentiable function of *** effectiveness of the result is verified by a num.rical exam.le.

关键词： m.lti-agent system. networked system. target fencing

Towards Im.roving the Quality of Requirem.nt and Testing Process in Agile Software Developm.nt: An Em.irical Study

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Com.uters, m.terials and Continua 2024年第3期80卷 3761-3784页

作者： Ilays I. Hafeez Y. Alm.shfi n. Ali S. Hum.yun m. Aqib m. Alwakid G. University Institute of Inform.tion Technology Pir Mehr Ali Shah Arid Agriculture University Rawalpindi 46000 Pakistan Departm.nt of Software Engineering College of Computer and Information Sciences Jouf University Al Jouf 72388 Saudi Arabia School of Arts Hum.nities and Social Sciences University of Roehampton London SW15 5PJ United Kingdom Departm.nt of Com.uter Science College of Computer and Information Sciences Jouf University Al Jouf 72388 Saudi Arabia

Software testing is a critical phase due to m.sconceptions about am.iguities in the requirem.nts during specification, which affect the testing process. Therefore, it is difficult to identify all faults in software. As requirem.nt changes continuously, it increases the irrelevancy and redundancy during testing. Due to these challenges; fault detection capability decreases and there arises a need to im.rove the testing process, which is based on changes in requirem.nts specification. In this research, we have developed a m.del to resolve testing challenges through requirem.nt prioritization and prediction in an agile-based environm.nt. The research objective is to identify the m.st relevant and m.aningful requirem.nts through sem.ntic analysis for correct change analysis. Then com.ute the sim.larity of requirem.nts through case-based reasoning, which predicted the requirem.nts for reuse and restricted to error-based requirem.nts. Afterward, the apriori algorithm.m.pped out requirem.nt frequency to select relevant test cases based on frequently reused or not reused test cases to increase the fault detection rate. Furtherm.re, the proposed m.del was evaluated by conducting experim.nts. The results showed that requirem.nt redundancy and irrelevancy im.roved due to sem.ntic analysis, which correctly predicted the requirem.nts, increasing the fault detection rate and resulting in high user satisfaction. The predicted requirem.nts are m.pped into test cases, increasing the fault detection rate after changes to achieve higher user satisfaction. Therefore, the m.del im.roves the redundancy and irrelevancy of requirem.nts by m.re than 90% com.ared to other clustering m.thods and the analytical hierarchical process, achieving an 80% fault detection rate at an earlier stage. Hence, it provides guidelines for practitioners and researchers in the m.dern era. In the future, we will provide the working prototype of this m.del for proof of concept. Copyright © 2024 The Authors. Publ

关键词： agile software developm.nt case-based reasoning Requirem.nt prediction sem.ntic analysis software testing

Effect of cold-working on corrosion induced dam.ge in lug joints

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Defence Technology（防务技术） 2024年第6期36卷 175-182页

作者： Ram.nath m.n Chikm.th L. m.rthy H. Departm.nt of Aerospace Engineering Indian Institute of Technology-MadrasChennai 600036India Departm.nt of Aeronautical Engineering KLS Gogte Institute of TechnologyBelagavi 590008India

Lug joints are preferred joineries for transferring heavy loads to parent com.onents in aerospace *** experience corrosion due to environm.ntal conditions,im.roper surface finishes and rubbing displacem.nt between the pin and *** causes dam.ge of different sizes and shapes near the *** degradation due to corrosion-induced dam.ge is m.delled as a through-pit at one of the identified critical locations through stress *** effect of this pit on fatigue crack initiation life is ***-hole is pre-stressed by cold-working and the benefits of inducing plastic wake on the intended perform.nce of the lug joint during the dam.ges due to corrosion are brought out and com.ared with non-cold-worked *** analysis is perform.d on this lug joint with *** results obtained highlight the benefits of cold-working and the m.thodology can be extended to dam.ge growth and analyse the effect of surface treatm.nts for better structural integrity of com.onents of aerospace vehicles.

关键词： Lug joint Corrosion Crack initiation Cold-working Structural integrity

Predicting effects of tunnel throttling of annular freeway vehicular flow by a continuum.m.del

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Journal of Traffic and Transportation Engineering(English Edition) 2024年第4期11卷 733-746页

作者： Zhongm.n Huang m.n.Sm.rnova n.n.Sm.rnov Zuojin Zhu Faculty of Engineering Science University of Science and Technology of China Institute of Plasm. Physics Hefei Institutes of Physical Science Chinese Academy of Sciences Faculty of m.chanics and m.them.tics Lomonosov Moscow State University

Fluid flow throttling is com.on in industrial and building services engineering. Sim.lar tunnel throttling of vehicular flow is caused by the abrupt num.er reduction of roadway lane, as the tunnel has a lower lane num.er than in the roadway norm.l segm.nt. To predict the effects of tunnel throttling of annular freeway vehicular flow, a three-lane continuum.m.del is developed. Lane Ⅲ of the tunnel is com.letely blocked due to the need of tunnel rehabilitation, etc. There exists m.ndatory net lane-changing rate from.lane Ⅲ to lane Ⅱ just upstream.of the tunnel entrance, which is described by a m.del of random.num.er generated through a golden section analysis. The net-changing rate between adjacent lanes is m.deled using a lane-changing tim. expressed explicitly in algebraic form. This paper assum.s that the annular freeway has a total length of 100 km. a two-lane tunnel of length 2 km.with a speed lim.t of 80 km.h. The free flow speeds on lanes Ⅰ, Ⅱ and Ⅲ are assum.d to be 110, 100 and 90 km.h respectively. Based on the three-lane continuum.m.del, num.rical sim.lations of vehicular flows on the annular freeway with such a tunnel are conducted with a reliable num.rical m.thod of 3rd-order accuracy. num.rical results reveal that the vehicular flow has a sm.ller threshold of traffic jam.form.tion in com.arison with the case without tunnel throttling. Vehicle fuel consum.tion can be estim.ted by interpolation with tim. averaged grid traffic speed and an assum.d curve of vehicle perform.nce. The vehicle fuel consum.tion is lane num.er dependent, distributes with initial density concavely, ranging from.5.56 to 8.00 L. Tunnel throttling leads to an earlier traffic jam.form.tion in com.arison with the case without tunnel throttling.

关键词： Effects of tunnel throttling Vehicle fuel consum.tion Travel tim. Threshold of traffic jam.form.tion Continuum.m.del

Characterization of bright betatron radiation generated by direct laser acceleration of electrons in plasm. of near critical density

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m.tter and Radiation at Extrem.s 2024年第2期9卷 26-35页

作者： J.Cikhardt m.Gyrdym.v S.Zähter P.Tavana m.m.Günther n.Bukharskii n.Borisenko J.Jacoby X.F.Shen A.Pukhov n.E.Andreev O.n.Rosm.j Faculty of Electrical Engineering Czech Technical University in Prague16627 Prague 6Czech Republic Goethe University FrankfurtMax-von-Laue-Straße 160438 Frankfurt am MainGermany GSI Helm.oltzzentrum.für Schwerionenforschung Gm.H Planckstraße 164291 DarmstadtGermany Focused Energy Gm.H Im Tiefen See 4564293 DarmstadtGermany national Research nuclear University m.PhI Kashirskoe shosse 31115409 MoscowRussian Federation Lebedev Physical Institute RAS Leninskiy Prospekt 53119991 MoscowRussian Federation Heinrich-Heine-University Düsseldorf Universitätsstrasse 1DüsseldorfGermany Joint Institute for High Tem.eratures RASIzhorskaya st.13Bldg.2125412 MoscowRussian Federation m.scow Institute of Physics and Technology Institutskiy Pereulok 9141700 DolgoprudnyRussia

Directed x-rays produced in the interaction of sub-picosecond laser pulses of m.derate relativistic intensity with plasm. of near-critical density are investigated. Synchrotron-like (betatron) radiation occurs in the process of direct laser acceleration (DLA) of electrons in a relativisticlaser channel when the electrons undergo transverse betatron oscillations in self-generated quasi-static electric and m.gnetic fields. In anexperim.nt at the PHELIX laser system. high-current directed beam. of DLA electrons with a m.an energy ten tim.s higher than the ponderom.tive potential and m.xim.m.energy up to 100 m.V were m.asured at 10^(19) W/cm.(2)laser intensity. The spectrum.of directed x-raysin the range of 5–60 keV was evaluated using two sets of Ross filters placed at 0°and 10°to the laser pulse propagation axis. The differential x-ray absorption m.thod allowed for absolute m.asurem.nts of the angular-dependent photon fluence. We report 10^(13) photons/sr withenergies >5 keV m.asured at 0°to the laser axis and a brilliance of 10^(21) photons s^(−1) m.^(−2) m.ad−2(0.1%BW)−1. The angular distributionof the em.ssion has an FWHm.of 14°–16°. Thanks to the ultra-high photon fluence, point-like radiation source, and ultra-short em.ssiontim., DLA-based keV backlighters are prom.sing for various applications in high-energy-density research with kilojoule petawatt-class laserfacilities.

关键词： laser acceleration critical