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Modeling considerations in seismic assessment of RC bridges using state-of-practice structural analysis software tools

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Frontiers of Structural and Civil Engineering 2018年第1期12卷 109-124页

作者： Ricardo MONTEIRO Miguel ARAUJO Raimundo DELGADO mario o MARQUES School of Advanced Studies IUSS Pavia Italy Department of Civil Engineering Faculty of Engineering University of Porto Portugal

The increasing awareness of the general society toward the seismic safety of structures has led to more restrictive performance requirements hence, many times, to the need of using new and more accurate methods of analysis of structures. Among these, nonlinear static procedures are becoming, evermore, the preferred choice of the majority of design codes, as an alternative to complete nonlinear time-history analysis for seismic design and assessment of structures. The many available software tools should therefore be evaluated and well understood, in order to be easily and soundly employed by the practitioners. The study presented herein intends to contribute to this need by providing further insight with respect to the use of commonly employed structural analysis software tools in nonlinear analysis of bridge structures. A comparison between different nonlinear modeling assumptions is presented, together with the comparison with real experimental results. Furthermore, alternative adaptive pushover procedures are proposed and applied to a case study bridge, based on a generic plastic hinge model. The adopted structural analysis program proved to be accurate, yielding reliable estimates, both in terms of local plastic hinge behavior and global structural behavior.

关键词： nonlinear analysis pushover RC bridges structural modelling software

Numerical modelling of non-ideal detonation in ANFO explosives applying Wood-Kirkwood theory coupled with EXPLO5 thermochemical code

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Defence Technology（防务技术） 2021年第5期17卷 1740-1752页

作者： Barbara Stimac Vinko Skrlec mario Dobrilovic Muhamed Suceska Faculty of Mining Geology and Petroleum EngineeringUniversity of ZagrebPierottijeva 610000ZagrebCroatia

Ammonium nitrate and fuel oil(ANFO)based explosive is a classic example of non-ideal high *** detonation is characterized by a strong dependence of detonation parameters on explosive charge diameter,presence and characteristics of confinement,as well as incomplete consumption of explosive at the sonic *** this work we propose a detonation model based on the Wood-Kirkwood(WK)theory coupled with the thermochemical code EXPLO5 and supplemented with reaction rate *** objective is to analyze the validity of the model for highly non-ideal ANFO explosives,with emphasis on effect of reaction rate *** was found that both single-step and two-step pressure-based models can be calibrated to reproduce experimental detonation velocity-charge radius data of ANFO at radii significantly above the failure radius(*** D/D_(id)>~0.6).Single-step pressure-based model,with the pressure exponent equal to 1.4,proved to be the most accurate,even in the vicinity of the failure *** impact of the rate models is most evident on temporal(and spatial)distribution of flow parameters in detonation driving zone,especially when it comes to the conversion and width of detonation driving zone.

关键词： ANFO Non-ideal detonation Reaction rate model Numerical modelling EXPLO5

Understanding Farmers’ Preferences Towards Insurance Schemes that Promote Biosecurity Best Management Practices

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International Journal of Disaster Risk Science 2022年第5期13卷 705-715页

作者： Rosa Mato-Amboage Julia Touza mario Soliño Department of Environment and Geography University of YorkYork YO105NGUnited Kingdom York Environmental Sustainability Institute University of YorkYork YO105NGUnited Kingdom Instituto de Investigaciones Marinas CSIC36208 VigoSpain Complutense Institute for International Studies(ICEI) Campus de Somosaguas28223 Pozuelo de AlarcónSpain

Plant pest and disease outbreaks,which occur with increasing frequency and intensity,cause catastrophic losses and threaten food security in many areas around the *** impacts are expected to be exacerbated by climate *** this challenge requires mechanisms that ensure the financial security of farmers while incentivizing private biosecurity efforts to prevent future *** study explored crop producers’ preferences for a subsidized insurance scheme as an instrument to manage novel biotic *** ally,we developed a choice experiment to evaluate Spanish growers’ willingness to pay for a crop insurance product that promotes compliance with best biosecurity management *** results show that while growers are willing to pay more for high coverage products that increase the resilience of crops to potential catastrophic outbreaks,there is neither a strong demand nor widespread availability of such *** required reductions in premiums before undertaking risk prevention measures;they are more willing to pay for schemes that link their eligibility to access to ad hoc funds in the eventuality of a catastrophic outbreak than they are to purchase *** findings also suggest that Spanish growers prefer expanding the eligible risks covered by insurance and envisage a role for insurance in offering biosecurity protection.

关键词： Biosecurity protection Choice experiment Crop insurance Pest risk Spain Subsidized insurance

Local and generalized height-diameter models with random parameters for mixed,uneven-aged forests in Northwestern Durango,Mexico

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Forestry Studies in China 2014年第1期16卷 41-49页

作者： sacramento Corral-Rivas Juan Gabriel lvarez-González Felipe Crecente-Campo José Javier Corral-Rivas Instituto Tecnológico de EI Salto Mesa del Tecnologico s/n.Apdo.Postal No.2EI Salto P.N.34950DurangoMéxico Departamento de Ingenieria Agroforestal Universidad de Santiago de Compostela.Escuela Politécnica SuperiorCampus Universitario27002 LugoEspana lnstituto de Silvicultura e Industria de la Madera Universidad Jurez del Estado de DurangoBlvd.del Guadiana # 501.Cuidad Universitaria34160 DurangoMexico

Background:We used mixed models with random components to develop height-diameter(h-d) functions for mixed,uneven-aged stands in northwestern Durango(Mexico),considering the breast height diameter(d) and stand variables as ***:The data were obtained from 44 permanent plots used to monitor stand growth under forest management in the study ***:The generalized Bertalanffy-Richards model performed better than the other generalized models in predicting the total height of the species under *** the genera Pinus and Quercus,the models were successfully calibrated by measuring the height of a subsample of three randomly selected trees close to the mean d,whereas for species of the genera Cupressus,Arbutus and Alnus,three trees were also selected,but they are specifically the maximum,minimum and mean d ***:The presented equations represent a new tool for the evaluation and management of natural forest in the region.

关键词： Conifer and broadleaves forests h-d relationship Mixed models Calibration

Changing mountain farmscapes: vulnerability and migration drivers in the Paute River watershed,Southern Ecuador

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Journal of Mountain Science 2021年第7期18卷 1902-1919页

作者： mario E.DONOSO Fausto O.SARMIENTO Unit of Engineering Industry and ConstructionCatholic University of CuencaCuenca 010150Ecuador VLIR-IUC Program in Migration and Local Development University of Cuenca-Flemish UniversitiesCuenca 010150Ecuador Neotropical Montology Collaborator Department of GeographyUniversity of GeorgiaAthensGa.30602USA

Abrupt changes in land use/land cover have often characterized Andean rural *** is particularly notorious in the Paute River watershed in southern *** seek to show how,under tenets of the global economy,rural mountain landscapes suffer constant modifications due to the agricultural practices of dwellers and *** of arable slopes takes center stage in analyzing vulnerability due to the high erodibility factor found in this *** using remote sensing and GIS applications,we analyzed the potential erodibility with intersections of rural development constraining of ecosystem services,including the production of water,food,and cultural values in the Paute River *** found six sources of migratory flows and analyzed topographic and elevation effects in potential erodibility indexes of agroecological options to ameliorate the environmental *** identified factors associated with migration trends observed in the area and assessed vulnerability issues of resource management that could prevent deforestation,soil erosion,and acculturation amidst the pressures of development in the *** conclude that sustainable development options can be implemented with a watershed management approach oriented to diminish *** approach shall be integrative,inclusive,and respectful of the rich biocultural diversity heritage conservation of southern Ecuador.

关键词： Farmscapes Erodibility Migration Rurality Paute-Ecuador

Effects of the FIFA 11+program on performance,biomechanical measures,and physiological responses:A systematic review

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Journal of Sport and Health Science 2023年第2期12卷 226-235页

作者： Mojtaba Asgari Bahareh Nazari mario Bizzini Thomas Jaitner Institute for Sport and Sports Science TU Dortmund UniversityDortmund 44221Germany Faculty of Physical Education and Sports Science University of TehranKish Island branchKish Island 79416Iran Human Performance Lab Schulthess Clinic LengghaldeZürich 8008Switzerland

Background:The side effects of the FIFA 11+program on performance have not been generally *** objective of this study was to synthesize the literature on the effects of the 11+on players’***:Five online databases(PubMed,Scopus,ScienceDirect,Springer,and Google Scholar)were searched(from April 2006 to March 2022)using predefined keywords and *** potential references were primarily recorded through Endnote and imported to *** of the 123 references screened by 2 blinded researchers through the software,59 full texts were assessed for eligibility,33 of which were ultimately *** quality of the studies and the risk of bias were then *** ID,title,place,aim,design,start/end dates,population description,study criteria,statistical analysis,and outcomes were ***:Studies were conducted on male and female players aged 10-32 years *** quality of the studies was moderate to high,and except for unclear bias for blinding outcome assessment,the risk of bias for all domains was ***-term application of the 11+improved most biomechanical measures and physiological responses except for lower extremity stability,ankle evertors time latency,ankle dorsiflexion,and ***,the 11+showed acute negative effects on physical performance compared to dynamic warm-ups and non-significant effects on technical ***:Mid-to-long-term implementation of the 11+improved the maj ority of biomechanical and a couple of physical measure s but showed no effects on technical *** must be observed for using the 11+before competitions,as it could acutely decrease physical/technical *** the contradictory nature of the literature,further studies should evaluate the short-to-mid-term effects of the 11+.Further studies are required to address ankle responses to the 11+intervention.

关键词： Football Futsal Injury prevention Systematic review

Research funding and citations in papers of Nobel Laureates in Physics, Chemistry and Medicine, 2019-2020

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Journal of Data and Information Science 2024年第2期9卷 56-80页

作者： mario Coccia Saeed Roshani CNR-National Research Council of Italy IRCRES-CNRTurin Research Area of the CNRStrada delle Cacce73-10135-TurinItaly Arizona State University School of Complex Adaptive Systems1031 S.Palm WalkTempeAZ 85281-2701USA Allameh Tabataba’i University Department of Technology and Entrepreneurship ManagementDehkadeh-ye-OTehran***Iran

Purpose:The goal of this study is a comparative analysis of the relation between funding(a main driver for scientific research)and citations in papers of Nobel Laureates in physics,chemistry and medicine over 2019-2020 and the same relation in these research fields as a ***/methodology/approach:This study utilizes a power law model to explore the relationship between research funding and citations of related *** study here analyzes 3,539 recorded documents by Nobel Laureates in physics,chemistry and medicine and a broader dataset of 183,016 documents related to the fields of physics,medicine,and chemistry recorded in the Web of Science ***:Results reveal that in chemistry and medicine,funded researches published in papers of Nobel Laureates have higher citations than unfunded studies published in articles;vice versa high citations of Nobel Laureates in physics are for unfunded studies published in ***,when overall data of publications and citations in physics,chemistry and medicine are analyzed,all papers based on funded researches show higher citations than unfunded ***/value:Results clarify the driving role of research funding for science diffusion that are systematized in general properties:a)articles concerning funded researches receive more citations than(un)funded studies published in papers of physics,chemistry and medicine sciences,generating a high Matthew effect(a higher growth of citations with the increase in the number of papers);b)research funding increases the citations of articles in fields oriented to applied research(e.g.,chemistry and medicine)more than fields oriented towards basic research(e.g.,physics).Practical implications:The results here explain some characteristics of scientific development and diffusion,highlighting the critical role of research funding in fostering citations and the expansion of scientific *** finding can support decision-making of policymakers and R&D mana

关键词： Research funding Citations Science diffusion Scientific change Science of Science Power-law distribution Basic research Applied research Matthew effect Nobel Laureates Nobel Prizes

Modeling of flow and debris ejection in blasting erosion arc machining in end milling mode

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Advances in Manufacturing 2020年第4期8卷 508-518页

作者： Ji-Peng Chen Lin Gu Wan-Sheng Zhao mario Guagliano School of Mechanical and Electronic Engineering Nanjing Forestry UniversityNanjing 210037People's Republic of China Department of Mechanical Engineering Polytechnic University of MilanPiazza Leonardo da Vinci32MilanItaly State Key Laboratory of Mechanical System and Vibration School of Mechanical EngineeringShanghai Jiao Tong UniversityShanghai 200240People's Republic of China

Blasting erosion arc machining(BEAM)is a typical arc discharge machining technology that was developed around 2012 to improve the machinability of difficult-to-cut *** milling BEAM has been successfully developed and preliminarily applied in ***,owing to the high complexity of the flow field and the difficulty of observing debris in the discharge gap,studies of the flow and debris in end milling BEAM are *** this study,fluid dynamics simulations and particle tracking are used to investigate the flow characteristics and debris ejection processes in end milling ***,the end milling BEAM m o d e is *** the numerical modeling parameters,geometric models,and simulation methods are presented in ***,the flow distribution and debris ejection are described,analyzed,and *** velocity and pressure distributions of the axial feed and radial feed are observed;the rotation speed and milling depth are found to have almost no effect on the flow velocity ***,debris is ejected more rapidly in the radial feed than in the axial *** particle kinetic energy tends to increase with increasing milling depth,and smaller particles are more easily expelled from the flushing *** study attempts to reveal the flow field properties and debris ejection mechanism of end milling BEAM,which will be helpful in gaining a better understanding of BEAM.

关键词： Modeling Flow Debris ejection Blasting erosion arc machining(BEAM) End milling

The need for a complete dental autopsy of unidentified edentulous human remains

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Forensic Sciences Research 2022年第2期7卷 319-322页

作者： Emilio Nuzzolese mario Torreggianti Department of Public Health Sciences and Pediatrics University of TurinTurinItaly Private Dental Clinic TeramoItaly

In December 2017,a decomposed unidentified body was found near the river Tronto in Teramo,*** corpse was found without any identifying documents or specific personal belongings,except for a packet of *** medical examiner determined a gastric perforation from the intake of hydrochloric acid to be the cause of death.A jar of muriatic acid found near the body led to suicide being considered the manner of *** Penal Court in Teramo appointed two forensic odontologists to complete the postmortem assessment and collect dental data for personal *** corpse was found wearing a complete set of upper and lower *** dental autopsy and 42 periapical X-ray images helped generate a biological profile of a man totally edentulous with upper and lower dentures,as well as an osteosynthesis with two plates and screws in the left ascending ramus of the *** March 2018,the sister of a missing person reported the disappearance of her brother,and a presumptive identification was performed through visual recognition of the decomposed *** sister confirmed the presence of two dentures and the location of the maxillo-facial surgery for the treatment of the fractured mandible.A complete dental autopsy was able to establish his identity without any DNA comparison *** case highlights the importance of performing a complete dental autopsy inclusive of dental radiographs,and its value in the identification of all unknown human remains even when totally edentulous.A complete dental autopsy should be performed in all cases of human identification.

关键词： Forensic sciences forensic odontology identification dental autopsy edentulous missing person