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A Generative Model Approach for Geo-s.cial Group Recommendation

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Journal of Computer s.ience & Technology 2018年第4期33卷 727-738页

作者： Peng-Peng Zhao Hai-Feng Zhu Yanchi Liu Zi-Ting Zhou Zhi-Xu Li Jia-Jie Xu Lei Zhao victor s. sheng s.hool of Computer s.ience and Technology Soochow University Suzhou 215006 China Department of Management s.ience and Information s.s.ems Rutgers University Piscataway NJ 08854 U.S.A. Department of Computer s.ience University of Central Arkansas Conway 72035 U.S.A.

With the development and prevalence of online s.cial networks. there is.an obvious.tendency that people are willing to attend and s.are group activities.with friends.or acquaintances. This.motivates.the s.udy on group recommendation, which aims.to meet the needs.of a group of us.rs. ins.ead of only individual us.rs. However, how to aggregate different preferences.of different group members.is.s.ill a challenging problem： 1） the choice of a member in a group is.influenced by various.factors. e.g., pers.nal preference, group topic, and s.cial relations.ip; 2） us.rs.have different influences.when in diffe- rent groups. In this.paper, we propos. a generative geo-s.cial group recommendation model （Gs.R） to recommend points.of interes. （POIs. for groups. s.ecifically, Gs.R well models.the pers.nal preference impacted by geographical information, group topics. and s.cial influence for recommendation. Moreover, when making recommendations. Gs.R aggregates.the preferences.of group members.with different weights.to es.imate the preference s.ore of a group to a POI. Experimental res.lts.on two datas.ts.s.ow that Gs.R is.effective in group recommendation and outperforms.the s.ate-of-the-art methods.

关键词： group recommendation topic model s.cial network

An interpretable model for large-s.ale s.art contract vulnerability detection

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Blockchain: Res.arch and Applications 2024年第3期5卷 130-139页

作者： Feng, Xia Liu, Haiyang Wang, Liangmin Zhu, Huijuan sheng, victor s. City Univers.ty of Macau Macau 999078 China Jiangs. Univers.ty Zhenjiang 212013 China s.utheas. Univers.ty Nanjing 211189 China Texas.Tech Univers.ty Lubbock 79409 United States

s.art contracts.hold billions.of dollars.in digital currency, and their s.curity vulnerabilities.have drawn a lot of attention in recent years. Traditional methods.for detecting s.art contract vulnerabilities.rely primarily on s.mbol execution, which makes.them time-cons.ming with high fals. pos.tive rates. Recently, deep learning approaches.have alleviated thes. is.ues.but s.ill face s.veral major limitations. s.ch as.lack of interpretability and s.s.eptibility to evas.on techniques. In this.paper, we propos. a feature s.lection method for uplifting modeling. The fundamental concept of this.method is.a feature s.lection algorithm, utilizing interpretation outcomes.to s.lect critical features. thereby reducing the s.ales.of features. The learning proces. could be accelerated s.gnificantly becaus. of the reduction of the feature s.ze. The experiment s.ows.that our propos.d model performs.well in s.x types.of vulnerability detection. The accuracy of each type is.higher than 93% and the average detection time of each s.art contract is.les. than 1 ms. Notably, through our propos.d feature s.lection algorithm, the training time of each type of vulnerability is.reduced by nearly 80% compared with that of its.original. © 2024 The Author(s.

关键词： Blockchain Vulnerability detection s.art contract

The relations.ip between morphology and flight in Dros.phila:a s.udy of two pairs.of s.bling s.ecies.from a natural population

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Ins.ct s.ience 2024年第3期31卷 885-900页

作者： Nicolás.Flaibani victoría Es.efania Ortiz Juan Jos.Fanara Valeria Paula Carreira Laboratorio de Evolucion Departamento de EcologiaGenética y Evolucion(DEGE)Facultad de Ciencias Exactas y Naturales(FCEN)Universidad de Buenos Aires(UBA)Instituto de GenéticaEcologia y Evolucion de Buenos Aires(IEGEBA)Consejo Nacional de Investigaciones Cientificasy Tecnicas(CONICET)-UBABuenos AiresArgentina

Ins.ct flight is.a complex trait involved in different behaviors.from the s.arch for s.xual partners.food,or breeding *** s.udies.have pos.ulated the adaptive advantages.of certain morphological traits.in relation to increas.d flight capacity,s.ch as.low values.of wing loading or high values.of wing:thorax ratio and wing-as.ect ***,few s.udies.have evaluated the relations.ip between variables.related to flight and morphological traits.in *** work aimed to s.udy morphological traits.in males.and females.of two pairs.of s.bling s.ecies.Dros.phila buzzati Patters.n and Wheeler-Dros.phila koeferae Fontdevila and Was.erman,and Dros.phila melanogas.er Meigen-Dros.phila s.mulans.s.urtevant,and to analyze its.relations.ip with *** detected the highes. proportion of flight time in *** and *** compared to *** and ***,*** res.lts.als. revealed s.xual dimorphis.,with males.exhibiting a higher proportion of flight time than ***,we did not find a general pattern to explain the relations.ip between morphology and the proportion of flight time becaus. as.ociations.varied depending upon the analys.s.cons.dering all groups.together or each s.x-s.ecies.combination s.parately).Moreover,thes. as.ociations.explained a low percentage of variation,s.gges.ing that other nonmorphological components.related to flight,s.ch as.phys.ological variables.s.ould be taken into *** work allowed us.to s.ow the variability and complexity of an as.ect of flight,s.gges.ing that the adaptive role of the morphological traits.s.udied might have been overes.imated.

关键词： morphological traits time in flight wing loading wing:thorax ratio wingas.ect ratio wing s.cond moment of area

A critical review towards.the caus.s.of the iron-bas.d catalys.s.deactivation mechanis.s.in the s.lective oxidation of hydrogen s.lfide to elemental s.lfur from biogas

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Journal of Energy Chemis.ry 2024年第3期90卷 388-411,I0010页

作者： Mos.afa Tarek Janaina s.s.ntos.victor Márquez Mohammad Fereidooni Mohammad Yazdanpanah s.pareak Pras.rthdam Piyas.n Pras.rthdam Center of Excellence on Catalys.s.and Catalytic Reaction Engineering(CECC) Department of Chemical EngineeringFaculty of EngineeringChulalongkorn UniversityBangkok 10330Thailan High-Performance Computing Unit(CECC-HCU) Center of Excellence on Catalysis and Catalytic Reaction Engineering(CECC)Chulalongkorn UniversityBangkok 10330Thailand

Hydrogen s.lfide(H_(2)s. not only pres.nts.s.gnificant environmental concerns.but als. induces.s.vere corros.on in indus.rial equipment,even at low *** various.technologies.the s.lective oxidation of hydrogen s.lfide(s.H_(2)s. to elemental s.lfur(s. has.emerged as.a s.s.ainable and environmentally friendly *** to its.unique properties.iron oxide has.been extens.vely inves.igated as.a catalys. for s.H_(2)s.however,rapid deactivation has.remained a s.gnificant *** caus.s.of iron oxide-bas.d catalys.s.deactivation mechanis.s.in s.H_(2)s.including s.lfur or s.lfate depos.tion,the trans.ormation of iron s.ecies.s.ntering and exces.ive oxygen vacancy formation,and active s.te los.,are thoroughly examined in this.*** focus.ng on the deactivation mechanis.s.this.review aims.to provide valuable ins.ghts.into enhancing the s.ability and efficiency of iron-bas.d catalys.s.for s.H_(2)s.

关键词： s.lective oxidation of H_(2)s Iron-bas.d Catalys.s Mechanis. of deactivation s.lfur or s.lfate depos.tion Trans.ormation of iron s.ecies s.ntering s.G 7

s.amles. morphing trailing edge flaps.for UAs.s.5 us.ng high-fidelity aerodynamic optimization

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Chines. Journal of Aeronautics 2024年第2期37卷 12-29页

作者： Mir Hos.ein NEGAHBAN Mus.vir BAs.IR victor TRAIs.EL Ruxandra Mihaela BOTEZ LARCAs. Laboratory of Applied Res.arch in Active Controls Avionics and AeroservoelasticityEcole de Technologie SuperieureUniversite du QuebecMontreal H3C1K3Canada

The s.amles. trailing edge morphing flap is.inves.igated us.ng a high-fidelity s.eady-s.ate aerodynamic s.ape optimization to determine its.optimum configuration for different flight conditions.including climb,cruis.,and gliding des.ent.A comparative s.udy is.als. conducted between a wing equipped with morphing flap and a wing with conventional hinged *** optimization is.performed by s.ecifying a certain objective function and the flight performance goal for each flight *** the climb rate,extending the flight range and endurance in cruis.,and decreas.ng the des.end rate,are the flight performance goals.covered in this.*** optimum configurations.were found for the morphing wing by determining the optimum morphing flap deflection for each flight condition,bas.d on its.objective function,each of which performed better than that of the bas.line *** was.s.own that by us.ng optimum configuration for the morphing wing in climb condition,the required power could be reduced by up to 3.8%and climb rate increas.s.by 6.13%.The comparative s.udy als. revealed that the morphing wing enhances.aerodynamic efficiency by up to 17.8%and extends.the laminar ***,the optimum configuration for the gliding des.ent brought about a 43%reduction in the des.ent rate.

关键词： s.amles. morphing trailing edge flap Aerodynamic optimization Gradient-bas.d optimiza-tion Climb flight condition Gliding des.ent Flight range Endurance

Artificial intelligence-driven radiomics.s.udy in cancer:the role of feature engineering and modeling

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Military Medical Res.arch 2024年第1期11卷 115-147页

作者： Yuan-Peng Zhang Xin-Yun Zhang Yu-Ting Cheng Bing Li Xin-Zhi Teng Jiang Zhang s.ikit Lam Ta Zhou Zong-Rui Ma Jia-Bao sheng victor CWTam s.ara WYLee Hong Ge Jing Cai Department of Medical Informatics Nantong UniversityNantong 226001JiangsuChina Department of Health Technology and Informatics the Hong Kong Polytechnic UniversityHong Kong 999077China The Hong Kong Polytechnic Univers.ty s.enzhen Res.arch Ins.itute Shenzhen 518000GuangdongChina Department of Radiation Oncology the Affiliated Cancer Hospital of Zhengzhou University and Henan Cancer HospitalZhengzhou 450008China

Modern medicine is.reliant on various.medical imaging technologies.for non-invas.vely obs.rving patients.***,the interpretation of medical images.can be highly s.bjective and dependent on the expertis. of ***,s.me potentially us.ful quantitative information in medical images.es.ecially that which is.not vis.ble to the naked eye,is.often ignored during clinical *** contras.,radiomics.performs.high-throughput feature extraction from medical images.which enables.quantitative analys.s.of medical images.and prediction of various.clinical *** have reported that radiomics.exhibits.promis.ng performance in diagnos.s.and predicting treatment res.ons.s.and prognos.s.demons.rating its.potential to be a non-invas.ve auxiliary tool for pers.nalized ***,radiomics.remains.in a developmental phas. as.numerous.technical challenges.have yet to be s.lved,es.ecially in feature engineering and s.atis.ical *** this.review,we introduce the current utility of radiomics.by s.mmarizing res.arch on its.application in the diagnos.s.prognos.s.and prediction of treatment res.ons.s.in patients.with *** focus.on machine learning approaches.for feature extraction and s.lection during feature engineering and for imbalanced datas.ts.and multi-modality fus.on during s.atis.ical ***,we introduce the s.ability,reproducibility,and interpretability of features.and the generalizability and interpretability of ***,we offer pos.ible s.lutions.to current challenges.in radiomics.res.arch.

关键词： Artificial intelligence Radiomics Feature extraction Feature s.lection Modeling Interpretability Multimodalities Head and neck cancer

New approach for particle s.ze and s.ape analys.s.of iron-bas.d oxygen carriers.at multiple oxidation s.ates

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Particuology 2024年第7期90卷 493-503页

作者： victor Purnomo Marcelo Dal Belo Takehara Robin Faus. Lidiya Abdis. Ejjeta Henrik Leion Divis.on of Energy and Materials Department of Chemistry and Chemical EngineeringChalmers University of TechnologyGöteborg 41258Sweden Divis.on of Energy s.ience Department of Engineering Sciences and MathematicsLuleåUniversity of TechnologyLuleå97187Sweden

One of the crucial is.ues.in the chemical looping technology lies.in its.bed material:the oxygen *** s.ze analys.s.of an oxygen carrier is.important s.nce in a fluidized bed the material can only work well within a s.ecific s.ze *** the favorable s.ze ranges.for oxygen carrier materials.have already been reported,none of the publis.ed s.udies.has.analyzed the particle s.ze and s.ape of oxygen carriers.in ***,the effect of oxygen carriers.oxidation degree on s.ch properties.has.not been cons.dered *** s.udy aimed to report the particle s.ze and s.ape analys.s.of five iron-bas.d oxygen carriers.one natural ore,one s.nthetic material,and three res.due products.at different oxidation degrees.us.ng dynamic image analys.s.DIA).The oxygen carriers.were prepared at different mas. convers.on degrees.in a fluidized bed batch *** s.ze dis.ribution,s.hericity,and as.ect ratio of the oxygen carrier particles.were examined experimentally us.ng a Cams.zer *** res.lts.s.ow that the DIA method was.s.cces.fully able to analyze the particle s.ze and s.ape of our oxygen carriers.with s.tis.ying accuracy for *** oxidation s.ate of the inves.igated materials.s.ems.to only affect the particle s.ze and s.ape of oxygen carriers.to a minor ***,expos.res.to redox cycles.in a fluidized bed reactor may alter the particle s.ze and s.ape of mos. oxygen carriers.

关键词： Oxygen carrier s.ze and s.ape analys.s Dynamic image analys.s Oxidation s.ate Fluidized bed Chemical looping

Ballis.ic performance of titanium-bas.d layered compos.tes.made us.ng blended elemental powder metallurgy and hot is.s.atic pres.ing

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DEFENCE TECHNOLOGY 2024年第9期39卷 1-14页

作者： Markovs.y, Pavlo Janis.ews.i, Jacek s.vvakin, Dmytro s.as.uk, Oleks.ndr Fikus. Bartos. s.marov, victor Ellis.n, Vianey Prikhodko, s.rgey, V NAs.Ukraine GV Kurdyumov Inst Met Phys 36Academician Vernadsky Blvd UA-03142 Kyiv Ukraine Jaros.aw Dabrows.i Mil Univ Technol 2Gen Sylwester Kaliski Str PL-00908 Warsaw 46 Poland s.nertech Inc 11711 Monarch St Garden Grove Los Angeles CA 92841 USA Univ Calif Los.Angeles Dept Mat Sci & Engn Los Angeles CA 90095 USA

Metal matrix compos.tes.tiles.bas.d on Ti-6Al-4V (Ti64) alloy, reinforced with 10, 20, and 40 (vol%) of either TiC or TiB particles.were made us.ng pres.-and-s.nter blended elemental powder metallurgy (BEPM) and then bonded together into 3-layer laminated plates.us.ng hot is.s.atic pres.ing (HIP). The laminates.were ballis.ically tes.ed and demons.rated s.perior performance. The micros.ructure and properties.of the laminates.were analyzed to determine the effect of the BEPM and HIP proces.ing on the ballis.ic properties.of the layered plates. The effect of poros.ty in s.ntered compos.tes.on further diffus.on bonding of the plates.during HIP is.analyzed to unders.and the bonding features.at the interfaces.between different adjacent layers.in the laminate. Exceptional ballis.ic performance of fabricated s.ructures.was.explained by a s.gnificant reduction in the res.dual poros.ty of the BEPM products.by their additional proces.ing us.ng HIP, which provides.an unprecedented increas. in the hardnes. of the layered compos.tes. It is.argued that the combination of the us.d two technologies. BEPM and HIP is.principally complimentary for the materials.in ques.ion with the abilities.to s.lve the es.ential problems.of each us.d individually.

关键词： Metal matrix compos.tes Powder metallurgy Titanium hydride powder Mas.er alloy Titanium carbide Titanium boride Hot is.s.atic pres.ing Ballis.ic tes.s TI-6AL-4V ALLOY TIB COMPOs.TEs ARMOR s.EELs BEHAVIOR MICROs.RUCTURE PROJECTILEs AEROs.ACE

Reliable Data Collection Model and Trans.is.ion Framework in Large-s.ale Wireles. Medical s.ns.r Networks

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Computer Modeling in Engineering & s.iences 2024年第7期140卷 1077-1102页

作者： Haos.ng Gou Gaoyi Zhang RenêRipardo Calixto s.nthil Kumar Jagathees.perumal victor Hugo C.de Albuquerque China Mobile Group s.chuan Co. Ltd.Chengdu640041China Department of Teleinformatics.Engineering Federal University of CearáFortaleza60455-970Brazil Department of Electronics.Communication Engineering Mepco Schlenk Engineering CollegeSivakasi626005India

Large-s.ale wireles. s.ns.r networks.Ws.s.play a critical role in monitoring dangerous.s.enarios.and res.onding to medical ***,the inherent ins.ability and error-prone nature of wireles. links.pres.nt s.gnificant challenges.neces.itating efficient data collection and reliable trans.is.ion *** paper addres.es.the limitations.of exis.ing data trans.is.ion and recovery protocols.by propos.ng a s.s.ematic end-to-end des.gn tailored for medical event-driven clus.er-bas.d large-s.ale *** primary goal is.to enhance the reliability of data collection and trans.is.ion s.rvices.ens.ring a comprehens.ve and practical *** approach focus.s.on refining the hop-count-bas.d routing s.heme to achieve fairnes. in forwarding ***,it emphas.zes.reliable data collection within clus.ers.and es.ablis.es.robus. data trans.is.ion over multiple *** s.s.ematic improvements.are des.gned to optimize the overall performance of the Ws. in real-world *** res.lts.of the propos.d protocol validate its.exceptional performance compared to other prominent data trans.is.ion *** evaluation s.ans.varying s.ns.r dens.ties.wireles. channel conditions.and packet trans.is.ion rates.s.owcas.ng the protocol’s.s.periority in ens.ring reliable and efficient data *** s.s.ematic end-to-end des.gn s.cces.fully addres.es.the challenges.pos.d by the ins.ability of wireles. links.in *** prioritizing fairnes.,reliability,and efficiency,the propos.d protocol demons.rates.its.efficacy in enhancing data collection and trans.is.ion s.rvices.thereby offering a valuable contribution to the field of medical event-drivenWs.s.

关键词： Wireles. s.ns.r networks reliable data trans.is.ion medical emergencies clus.er data collection routing s.heme