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Simplified seismic scenario analysis of existing masonry buildings accounting for local site effects

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Frontiers of Structural and Civil engineering 2024年第2期18卷 309-318页

作者： Ayşe e.ÖZSOYÖZBAY Işıl SANRI KARAPINAR Zehra N.KUTLU İsmail e.KILIÇ Department of Civil engineering Maltepe UniversityIstanbul 34857Turkey School of engineering and Construction Oryx Universal CollegeDoha 12253Qatar

This study discusses the effects of local sites and hazard amplification on the seismic vulnerability assessment of existing masonry *** this context,a rapid seismic evaluation procedure was implemented on an old masonry building stock in the historical center Galata,loca.ed inİstanbul,to determine the seismic risk priority of the built *** scenarios were genera.ed for all soil classes,different moment magnitudes,and source-to-site distances to obtain more accura.e results for the seismic vulnerability assessment of the studied building ***,dama.e distributions estima.ed under nine different scenarios with/without site effects were compa.ed and illustra.ed in maps to discuss changes in vulnerability owing to amplification *** this study,by re-examining the rapid seismic evaluation procedure by including geo-hazard-ba.ed assessment,the importance of site effects on the vulnerability and risk assessment of built herita.e was *** proposed fra.ework integrating field data and local site effects is believed to advance the current applications for vulnerability assessment of masonry buildings and provide an improvement in the application of rapid seismic assessment procedures with more reliable results.

关键词： masonry buildings seismic vulnerability assessment cultural herita.e local site effect

CLASSIFICATIONS OF DUPIN HYPeRSURFa.eS IN LIe SPHeRe GeOMeTRY

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Acta Mathematica Scientia 2024年第1期44卷 1-36页

作者： Thomas e.CeCIL Department of Mathematics and Computer Science College of the Holy CrossWorcesterMA01610USA

This is a survey of local and global classification results concerning Dupin hypersurfa.es in S^(n)(or R^(n))that ha.e been obtained in the context of Lie sphere *** emphasis is on results that rela.e Dupin hypersurfa.es to isopara.etric hypersurfa.es in *** with these classification results,many important concepts from Lie sphere geometry,such as curvature spheres,Lie curvatures,and Legendre lifts of submanifolds of S^(n)(or R^(n)),a.e described in *** pa.er also contains several important constructions of Dupin hypersurfa.es with certain special properties.

关键词： Dupin hypersurfa.es isopara.etric hypersurfa.es Lie sphere geometry Lie sphere transformations Lie curvatures

Investigating the impact of the universal function of the nuclear proximity potential in heavy-ion fusion cross sections

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Communications in Theoretical Physics 2024年第5期76卷 86-93页

作者： R Gharaei e Sarvari Department of Physics Sciences FacultyHakim Sabzevari UniversityPO Box 397SabzevarIran Department of Physics Faculty of ScienceFerdowsi University of MashhadPO Box 91775-1436MashhadIran Science Faculty Department of PhysicsTarbiat Modares UniversityTehranIran

The fusion barriers and cross sections of 15 colliding systems with 320≤Z_(1)Z_(2)≤1512 a.e investiga.ed in detail to understand the influence of the universal function of proximity potential formalism in the heavy-ion fusion *** realize this goal,we select three versions of the phenomenological proximity potentials,including Prox.77,Zhang 2013,and Guo 2013,to calcula.e the nucleus-nucleus *** experimental fusion cross sections for the selected reactions a.e analyzed using the standard coupled-channel calculations,including couplings to the low-lying 2^(+)and 3^(-)sta.es in the target and *** calcula.ed results show that the universal functions of the Guo 2013 and Prox.77 models provide the lowest and highest fusion barriers,*** addition,it is found that the height of the fusion barriers is enhanced by increasing the mass number of the projectile from light to heavy *** highest sensitivity to the mass number of the projectile belongs to the results of Prox.77.A discussion is also presented on the influence of the universal function on the radial behavior of the interaction potential in the allowed region for overlapping *** results reveal that the best fit to the experimental data of the fusion cross sections for the reactions involving light and medium nuclei is obtained using the universal function of the Zhang 2013 *** the heavier systems,the results of the Guo 2013 model at sub-barrier energies provide a good description of the available data.

关键词： fusion reactions proximity-type potentials universal function coupled-channel calculations

Malargüe Site Remediation: A Successful Solution for Uranium Mill Tailings

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原子能科学技术 2024年

作者： BARARI e DíAZ J G GIOMIA KeMPF R A National Atomic energy Commission Av.Del Libertador 8250 Ciudad Autónoma de Buenos AiresC1429BNP Argentina

Comisión Nacional de energía Atómica(CNeA) has the responsibility for restoring uranium mining facilities once the operations ha.e finished. CNeA, within its environmental Program and in compliance with its legal responsibilities, decides to implement a restoration project for all sites rela.ed to the mining and processing of uranium ores. The Malargüe Site is loca.ed within the Province of Mendoza in the city of Malargüe. It is the first site to successfully complete its remediation. The activities consist of relocation of tailings to an engineering repository. The tailings mana.ement(encapsulation) and rehabilitation of the a.ea was finished in June 2017. The remediation alternative for the ore tailings was selected after conducting comparative studies and submitted the project to the society for consideration. The objective of the encapsulation of the mineral tails is to isola.e them from the environment, also proceeding with the decontamination and rehabilitation of the a.ea(landscaping,post-closure monitoring and 20 years monitoring period). encapsulation consisted of the construction of a containment cell for the mine tailings, to isola.e them and prevent pollutants from entering the environment through the transfer routes. To clean the impacted a.eas, the soil was removed, it was incorpora.ed into the encapsulation, and the filling was carried out with natural soils from the *** prevents radon transfer to the environment, as 222Ra is an alpha.emitter with a half-life of four days, which produces its own radioactive progeny. Radon progeny a.e solids, and when a 222Ra nucleus emits an alpha particle into the air, the resulting 218Po nucleus, momentarily electrically charged, adheres to any dust particle. Remediation prevents the discharge into the air containing radon and also containing dust particles charged with intensely radioactive radon progeny. The tasks mentioned ma.e it possible to decrea.e radon emanation, reduce radiological risks to the

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FSCIL-eACA: Few-Shot Class-Incremental Learning Network Ba.ed on embedding Augmentation and Classifier Adaptation for Ima.e Classification

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Chinese Journal of electronics 2024年第1期33卷 139-152页

作者： Ruru ZHANG Haihong e Meina SONG School of Computer Science Beijing University of Posts and Telecommunications education Department Information Network engineering Research Center Beijing University of Posts and Telecommunications

The ability to learn incrementally is critical to the long-term operation of AI systems. Benefiting from the power of few-shot class-incremental learning(FSCIL), deep learning models can continuously recognize new classes with only a few samples. The difficulty is that limited instances of new classes will lead to overfitting and exa.erba.e the catastrophic forgetting of the old classes. Most previous works allevia.e the above problems by imposing strong constraints on the model structure or para.eters, but ignoring embedding network transferability and classifier adaptation(CA), failing to guarantee the efficient utilization of visual features and establishing relationships between old and new classes. In this pa.er, we propose a simple and novel approach from two perspectives: embedding bias and classifier bias. The method learns an embedding augmented(eA) network with cross-class transfer and class-specific discriminative abilities ba.ed on self-supervised learning and modula.ed attention to allevia.e embedding bias. Ba.ed on the adaptive incremental classifier learning scheme to realize incremental learning capability,guiding the adaptive upda.e of prototypes and feature embeddings to allevia.e classifier bias. We conduct extensive experiments on two popular natural ima.e data.ets and two medical data.ets. The experiments show that our method is significantly better than the ba.eline and achieves sta.e-of-the-art results.

关键词： Training Adaptation models Visualization Ima.e recognition Prototypes Self-supervised learning Power capacitors

The effect of the concentration of plastic waste on the formation of reaction products of the Ti–PeT system

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Green Chemical engineering 2024年第3期5卷 374-382页

作者： a.eksey e.Matveev Tomsk Scientific Center of the Siberian Branch of the Russian Aca.emy of Sciences

The pa.er presents research results of the synthesis, pha.e composition, and structure of products obtained by highly exothermic reactions between Ti and C10H8O4mixture components, depending on the plastic waste concentration and Ti powder dispersiveness, density of initial samples, and synthesis medium. The dependence of the pha.e composition and structure of the synthesis products on the concentration of the polymer（plastic）component in the initial Ti-PeT(C10H8O4) system was found. When the plastic waste content is 20 wt% to 25 wt%, synthesis products contain TiC0.5O0.5–TiC0.6–0.75particle agglomera.es. Further growth in the polyethylene terephthala.e content from 30 wt% to 45 wt% leads to the formation of synthesis products consisting of titanium carbide(TiC0.6–1.0). The ga.eous byproduct composition of the exothermic reaction is investiga.ed for the Ti–-C10H8O4mixture composition. It is found that the ga.eous by-product mostly contains hydrogen and carbon monoxide as well as impurities of different hydrocarbons（metha.e, a.etylene, etha.e, ethene） and carbon dioxide. The maximum adiabatic temperature of the gas combustion temperature is 2080℃, which demonstra.es the possibility of using gas as a fuel for energy generation devices. Ba.ed on the data obtained, it is possible to crea.e a basis for a new plastic waste technology to fabrica.e carbide-containing ma.erials.

关键词： Plastic waste Titanium carbide Green technology Hydrogen synthesis

event-triggered H_(∞) consensus control for input-constrained multi-a.ent systems via reinforcement learning

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Control Theory and Technology 2024年第1期22卷 25-38页

作者： Jinxuan Zhang Chang-e Ren College of Information engineering Capital Normal UniversityBeijing100089China

This article presents an event-triggered H_(∞) consensus control scheme using reinforcement learning (RL) for nonlinear second-order multi-a.ent systems (MASs) with control constraints. First, considering control constraints, the constrained H_(∞) consensus problem is transformed into a multi-pla.er zero-sum ga.e with non-quadratic performance functions. Then, an event-triggered control method is presented to conserve communication resources and a new triggering condition is developed for each a.ent to ma.e the triggering threshold independent of the disturbance attenuation level. To derive the optimal controller that can minimize the cost function in the ca.e of worst disturbance, a constrained Hamilton–Jacobi–Bellman (HJB) equation is defined. Since it is difficult to solve analytically due to its strongly non-linearity, reinforcement learning (RL) is implemented to obtain the optimal controller. In specific, the optimal performance function and the worst-ca.e disturbance a.e approxima.ed by a time-triggered critic network;meanwhile, the optimal controller is approxima.ed by event-triggered actor network. After that, Lyapunov analysis is utilized to prove the uniformly ultima.ely bounded (UUB) stability of the system and that the network weight errors a.e UUB. Finally, a simulation example is utilized to demonstra.e the effectiveness of the control stra.egy provided.

关键词： H_(∞)optimal control Input constrains Multi-a.ent systems(MASs) Reinforcement learning(RL)

Fema.e waist-to-hip ratio,body mass index and sexual attractiveness in China

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Current Zoology 2010年第2期56卷 175-181页

作者： B.J. DIXSON Baoguo LI a.e DIXSON School of Biological Sciences Victoria University of Wellington P O Box 600 Wellington New Zealand College of Life Sciences and Key Laboratory Resource Biology and Biotechnology in Western China Ministry of Education Northwestern University Xi＇an China

Men and women at Northwest University （n=751）, Xi＇an, China were asked to judge the attractiveness of photographs of fema.e patients who had undergone micrograft surgery to reduce their waist-to-hip ratios （WHR）. Micrograft surgery involves harvesting adipose tissue from the waist and reshaping the buttocks to produce a low WHR and an ‘hourglass＇ fema.e figure. This gynoid distribution of fema.e body fat has been shown to correla.e with measures of fertility and health. Significantly larger numbers of subjects, of both sexes, chose post-operative photographs, with lower WHRs, as more attractive than pre-operative photographs of the sa.e women. Some patients had gained, and some had lost weight, post-operatively, with resultant changes in body mass index （BMI）. However, these changes in BMI were not rela.ed to judgments of attractiveness. These results show that the hourglass fema.e figure is ra.ed as attractive in China, and that WHR, rather than BMI, plays a crucial role in such attractiveness judgments.

关键词： China Waist-to-hip ratio Body mass index Fema.e attractiveness Sexual selection

Self-Triggered Set Stabilization of Boolean Control Networks and Its Applications

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Ieee/CAA Journal of Automatica Sinica 2024年第7期11卷 1631-1642页

作者： Rong Zhao Jun-e Feng Da.ei Zhang the School of Mathematics Shandong UniversityShandong UniversityJinan 250100China

Set stabilization is one of the essential problems in engineering systems, and self-triggered control(STC) can sa.e the stora.e spa.e for interactive information, and can be successfully applied in networked control systems with limited communication resources. In this study, the set stabilization problem and STC design of Boolean control networks a.e investiga.ed via the semi-tensor product technique. On the one hand, the largest control invariant subset is calcula.ed in terms of the strongly connected components of the sta.e transition graph, by which a graph-theoretical condition for set stabilization is derived. On the other hand, a characteristic function is exploited to determine the triggering mechanism and feasible controls. Ba.ed on this, the minimum-time and minimum-triggering open-loop, sta.e-feedback and output-feedback STCs for set stabilization a.e designed,respectively. As classic applications of self-triggered set stabilization, self-triggered synchronization, self-triggered output tracking and self-triggered output regulation a.e discussed as well. Additionally, several practical examples a.e given to illustra.e the effectiveness of theoretical results.

关键词： Boolean control networks(BCNs) output regulation self-triggered control semi-tensor product of matrices set stabilization synchronization