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Uncertainties of landslide susceptibility prediction: Influences of random errors in landslide conditioning factors and errors reduction by low pass filter method

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第1期16卷 213-230页

作者： Faming Huang Zuokui Teng Chi Yao Shui-Hua Jiang filippo Catani Wei Chen Jinsong Huang School of Infrastructure Engineering Nanchang UniversityNanchang330031China State Key Laboratory of Geohazard Prevention and Geoenvironment Protection Chengdu University of TechnologyChengdu610059China Department of Geosciences University of PadovaPadovaItaly College of Geology and Environment Xi’an University of Science and TechnologyXi’an710054China Discipline of Civil Surveying and Conditioning EngineeringPriority Research Centre for Geotechnical Science and EngineeringUniversity of NewcastleNewcastleNSWAustralia

In the existing landslide susceptibility prediction(LSP)models,the influences of random errors in landslide conditioning factors on LSP are not considered,instead the original conditioning factors are directly taken as the model inputs,which brings uncertainties to LSP *** study aims to reveal the influence rules of the different proportional random errors in conditioning factors on the LSP un-certainties,and further explore a method which can effectively reduce the random errors in conditioning *** original conditioning factors are firstly used to construct original factors-based LSP models,and then different random errors of 5%,10%,15% and 20%are added to these original factors for con-structing relevant errors-based LSP ***,low-pass filter-based LSP models are constructed by eliminating the random errors using low-pass filter ***,the Ruijin County of China with 370 landslides and 16 conditioning factors are used as study *** typical machine learning models,*** perceptron(MLP),support vector machine(SVM)and random forest(RF),are selected as LSP ***,the LSP uncertainties are discussed and results show that:(1)The low-pass filter can effectively reduce the random errors in conditioning factors to decrease the LSP uncertainties.(2)With the proportions of random errors increasing from 5%to 20%,the LSP uncertainty increases continuously.(3)The original factors-based models are feasible for LSP in the absence of more accurate conditioning factors.(4)The influence degrees of two uncertainty issues,machine learning models and different proportions of random errors,on the LSP modeling are large and basically the same.(5)The Shapley values effectively explain the internal mechanism of machine learning model predicting landslide *** conclusion,greater proportion of random errors in conditioning factors results in higher LSP uncertainty,and low-pass filter can effectively reduce these random e

关键词： Landslide susceptibility prediction Conditioning factor errors Low-pass filter method Machine learning models Interpretability analysis

Agricultural Land Use Effects on Climate over China as Simulated by a Regional Climate Model

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Acta meteorologica Sinica 2010年第2期24卷 215-224页

作者：张冬峰高学杰石英 GIORGI filippo 董文杰 National Climate Center The Abdus Salam International Centre for Theoretical Physics College of Global Change and Earth System Beijing Normal University

The Abdus Salam International Centre for Theoretical Physics（ICTP） Regional Climate Model version 3（RegCM3） is used to investigate the climate effects of land use change related to agriculture over *** model is driven by the European Center for Medium-range Weather Forecast 40-yr Re-Analysis（ERA40） *** sets of experiments for 15 yr（1987-2001） are conducted,one with the potential vegetation cover and the other the agricultural land use（AG）.The results show that the AG effects on temperature are weak over northern China while in southern China a significant cooling is found in both winter（DecemberJanuary-February） and summer（June-July-August）.The mean cooling in the sub-regions of South China（SC） in winter and the sub-regions of Southeast（SE） China in summer are found to be the greatest,up to 0.5°and 0.8 ℃ ,*** general,the change of AG leads to a decrease of annual mean temperature by 0.5-1 ℃ in southern *** change of precipitation in western China and a decrease of precipitation in eastern China are simulated in winter,with the maximum reduction reaching-7.5% over SE.A general decrease of precipitation over northern China and an increase over southern China are simulated in summer,in particular over SE where the increase of precipitation can be up to 7.3%.The AG effects on temperature and precipitation show strong interannual *** of the climate effects between AG and the present-day land use（LU） is also *** southern China,the ratio of temperature（precipitation） changes caused by AG and LU is greater than（closer to） the ratio of the number of grid cells with changed vegetation cover due to AG and LU variations.

关键词： agricultural land use regional climate model regional climate change

Duplication of the transverse colon in an adult:Case report and review

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World Journal of Gastroenterology 2013年第4期19卷 586-589页

作者： filippo Banchini Rocco Delfanti Evelina Begnini Maria Candida Tripodi Patrizio Capelli Department of General Surgery Ospedale Guglielmo da Saliceto29100 PiacenzaItaly UO Fibrosi Cistica Dipartimento Materno Infantile Azienda Ospedaliera Universitaria di Parma 43126 ParmaItaly

Tubular duplication of the colon is very rare especially in adulthood,because it is frequently symptomatic earlier in newborn life,so only few cases are reported in *** theories are proposed to explain the onset and the evolution of gut malformations as the aberrant lumen recanalization or the diverticular theory,the alteration of the lateral closure of the embryonal disk or finally the dorsal protrusion of the yolksac for herniation or adhesion to the ectoderm for an abnormality of the longitudinal line,but none clarifies the exact genesis of *** present a case of "Y-shaped" tubular duplication of the transverse colon in a 21-year-old adult,with a history of chronic pain and constipation,referred to our department for abdominal pain with retrosternal irradiation,treated with the resection of the aberrant bowel.

关键词： Colonic diseases Colorectal duplication Neogenesis Colonic duplication Transverse duplication

Music therapy and pediatric palliative care:songwriting with children in the end-of-life

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World Journal of Pediatrics 2022年第10期18卷 695-699页

作者： filippo Giordano Chiara Rutigliano Mariagrazia Baroni Massimo Grassi Paola Muggeo Nicola Santoro Department of Emergency and Organ Transplants University of Bari Aldo MoroPiazza G.Cesare 1170124BariItaly Section of Pediatric Hematology-Oncology University Hospital of BariBariItaly Hospice Madonna Dell’Uliveto AlbineaREItaly

Children's needs in pediatric palliative care(PPC)are complex and are determined by age,the course of the disease,family structure,and cultural background[1].The child's family system also has multiple needs which mus... 详细信息

关键词： pediatric assessed palliative

From landslide characterization to nature reserve management:The“Scialimata Grande di Torre Alfina”landslide Geosite(Central Apennines,Italy)

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Journal of Mountain Science 2023年第3期20卷 585-606页

作者： Gianluca TRONTI Francesca VERGARI Irene Maria BOLLATI filippo BELISARIO Maurizio DELMONTE Manuela PELFINI Paola FREDI Earth Sciences Department"Ardito Desio" University La StataleMilan 20133(MI)Italy Monte Rufeno Nature Reserve Acquapendente 01021(VT)Italy Earth Sciences Department University La SapienzaRome 00185(RM)Italy

Italy is characterized by widespread geomorphological instability,among which landslides leave impressive marks on the ***,landslide bodies may represent key sites for thematic and educational itineraries,especially in protected areas,where their management becomes an important *** study focuses on the"Monte Rufeno Nature Reserve"(Central Apennines,Italy),where iconic landslides are ***,the"Scialimata Grande di Torre Alfina"landslide(SGTA)is listed in the regional Geosite *** work aims to propose a multiscale procedure for landslide analysis,in terms of both hazard sources but also educational and geoheritage enhancement opportunities in natural *** performing a Landslide Susceptibility conditional Analysis(LSA)for the reserve territory,attention was focused on the SGTA,to define properly its features and morphodynamics.A multi-disciplinary approach was adopted,by applying both remote sensing(UAV structure from motion,Photointerpretation)and field survey(geomorphological and GPS monitoring).From the LSA,based on drainage density,curvature,and slope triggering factors,the road and trail susceptibility maps were derived,as base tools for future risk assessments and trail paths management within the *** the SGTA scale,the monitoring showed a displacement of up to 23 m during the time interval between 2015 and *** landslide dynamics seem to be driven by alternating dry and extremely wet periods;moreover,leaks from the aqueduct in the detachment area and piping effects through clays may have also decreased the substrate *** SGTA complex influence on the Paglia River valley geometry was also hypothesized,underlining the action of landslide through different spatial scales(on-site and off-site)and on different environment features(sediment connectivity,hydrology).Finally,the SGTA appears highly representative of the geomorphic dynamics within the Nature Reserve(i.e.,scientific value)and it could be

关键词： Landslides Geoheritage Geosites Nature reserves management UAV structure from motion Landslides conditional analyses

Effects of climate changes on dust aerosol over East Asia from RegCM3

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Advances in Climate Change Research 2016年第3期7卷 145-153页

作者： ZHANG Dong-Feng GAO Xue-Jie Ashraf ZAKEY filippo GIORGI Shanxi Climate Center Taiyuan 030006China Climate Change Research Center Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China Egyptian Meteorological Authority Cairo 11784Egypt The Abdus Salam International Centre for Theoretical Physics Trieste 34100Italy

In order to understand impacts of global warming on dust aerosol over East Asia, a regional climate model(RegCM3) coupled with a dust model is employed to simulate the present(1991-2000, following the observed concentration of the greenhouse gases) and future(2091-2100,following the A1B scenario) dust aerosol. Three experiments are performed over East Asia at a horizontal resolution of 50 km, driven by the outputs from a global model of the Model for Interdisciplinary Research on Climate(MIROC3.2_hires), two without(Exp.1 for the present and Exp.2 for the future) and one with(Exp.3 for the future) the radiative effects of dust aerosols. Effects of climate changes on dust aerosols and the feedback of radiative effects in the future are investigated by comparing differences of Exp.2 and Exp.1, Exp.3 and Exp.2, respectively. Results show that global warming will lead to the increases of dust emissions and column burden by 2% and 14% over East Asia, characterized by the increase in December-January-February-March(DJFM) and the decrease in Aprile May(AM). Similar variations are also seen in the projected frequencies of high dust emission events, showing an advanced active season of dust in the future. The net top-of-atmosphere(TOA)radiative forcing is positive over the desert source regions and negative over downwind regions, while the surface radiative forcing is negative over the domain, which will lead to a reduction of dust emissions and column burden.

关键词： Dust aerosol Climate changes RegCM3 Numerical simulations

Design and Analysis of Energy Absorbent Bioinspired Lattice Structures

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Journal of Bionic Engineering 2023年第4期20卷 1670-1686页

作者： Lucrezia Greco Federica Buccino Zhuo Xu Laura Vergani filippo Berto Mario Guagliano Seyyed Moahmmad Javad Razavi Sara Bagherifard Department of Mechanical Engineering Politecnico di MilanoMilanItaly Department of Mechanical and Industrial Engineering Norwegian University of Science and TechnologyTrondheimNorway Chemical Engineering and Materials Environment Department Sapienza University of RomeRomeItaly

The increasing demand for energy absorbent structures,paired with the need for more efficient use of materials in a wide range of engineering fields,has led to an extensive range of designs in the porous forms of sandwiches,honeycomb,and *** achieve an even better performance,an ingenious solution is to learn how biological structures adjust their configurations to absorb energy without catastrophic *** this study,we have attempted to blend the shape freedom,offered by additive manufacturing techniques,with the biomimetic approach,to propose new lattice structures for energy absorbent *** this aim we have combined multiple bio-inspirational sources for the design of optimized configurations under compressive *** lattice structures are fabricated based on the designed unit cell geometries and studied using experimental and computational *** individual effect of each bio-inspired feature has been evaluated on the energy absorbance performance of the designed *** on the design parameters of the lattices,a tuning between the strength and energy absorption could be obtained,paving the way for transition within a wide range of real-life applicative scenarios.

关键词： Energy absorbance Lattice structures Bio-inspiration Fused deposition modeling Lightweight design

On the evaluation of ALD TiO_(2),ZrO_(2) and HfO_(2) coatings on corrosion and cytotoxicity performances

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Journal of Magnesium and Alloys 2021年第5期9卷 1828-1841页

作者： Mirco Peron Susanna Cogo Maria Bjelland Abdulla Bin Afif Anup Dadlani Elisa Greggio filippo Berto Jan Torgersen Department of Industrial and Mechanical Engineering Norwegian University of Science and TechnologyRichard Birkelands vei 2b7034 TrondheimNorway Department of Biology University of PadovaVia Ugo Bassi 58/b35131PadovaItaly

Magnesium alloys have been widely studied as materials for temporary implants,but their use has been limited by their corrosion ***,coatings have been proven to provide an effective *** only little explored in the field,Atomic Layer Deposition(ALD)stands out as a coating technology due to the outstanding film conformality and density ***,we provide first insights into the corrosion behavior and the induced biological response of 100 nm thick ALD TiO_(2),HfO_(2)and ZrO_(2)coatings on AZ31 alloy by means of potentiodynamic polarization curves,electrochemical impedance spectroscopy(EIS),hydrogen evolution and MTS colorimetric assay with L929 *** three coatings improve the corrosion behavior and cytotoxicity of the ***,HfO_(2)coatings were characterized by the highest corrosion resistance and cell viability,slightly higher than those of ZrO_(2)***_(2)was characterized by the lowest corrosion improvements and,though generally considered a biocompatible coating,was found to not meet the demands for cellular applications(it was characterized by grade 3 cytotoxicity after 5 days of culture).These results reveal a strong link between biocompatibility and corrosion resistance and entail the need of taking the latter into consideration in the choice of a biocompatible coating to protect degradable Mg-based alloys.

关键词： Atomic layer deposition(ALD) Coatings Corrosion resistance Cytocompatibility Magnesium

Large-area nanopatterned graphene for ultrasensitive gas sensing

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Nano Research 2014年第5期7卷 743-754页

作者： Alberto Cagliani David Micheal Angus Mackenzie Lisa Katharina Tschammer filippo Pizzocchero Kristoffer Almdal Peter Boggild DTU Nanotech-Center for Nanostructured Graphene (CNG) and Department of Micro- and Nanotechnology Technical University ofDenmark Building 345 ~rsteds Plads 2800 Kgs. Lyngby Denmark

Chemical vapor deposited （CVD） graphene is nanopatterned using a spherical block copolymer etch mask. The use of spherical rather than cylindrical block copolymers allows homogeneous patterning of cm-scale areas without any substrate surface treatment. Raman spectroscopy was used to study the con- trolled generation of point defects in the graphene lattice with increasing etching time, confirming that alongside the nanomesh patterning, the nanopatterned CVD graphene presents a high defect density between the mesh holes. The nanopatterned samples showed sensitivities for NO2 of more than one order of magnitude higher than for non-patterned graphene. NO2 concentrations as low as 300 ppt were detected with an ultimate detection limit of tens of ppt. This is the smallest value reported so far for non-UV illuminated graphene chemiresistive NO2 gas sensors. The dramatic improvement in the gas sensitivity is believed to be due to the high adsorption site density, thanks to the combination of edge sites and point defect sites. This work opens the possibility of large area fabrication of nanopatterned graphene with extremely high densities of adsorption sites for sensing applications.

关键词： graphene gas sensor nitrogen dioxide nanopatteming defects