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Ground movement patterns and shallow foundation performance in Iskenderun coastline during the 2023 Kahramanmaras earthquake sequence

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Earthquake engineering and engineering Vibration 2023年第4期22卷 867-881页

作者： Tugce Baser Kamran Nawaz Albert Chung Seikh Faysal Ozgun Alp Numanoglu Department of Civil and Environmental engineering University of Illinois Urbana-ChampaignUrbanaIllinois 61801USA schnabel engineering 16300 Christensen Rd Suite 350TukwilaWA 98188USA

This study focuses on the field reconnaissance efforts for investigating ground deformation behavior and building foundation performance in *** structures experienced significant damage or collapsed due to strong ground shaking in the coastal Iskenderun district of Hatay during the 2023 Kahramanmaras earthquake *** buildings were also impacted by ground failure due to liquefaction of deposits in the *** information regarding the general subsurface profile and post-earthquake data collected during the reconnaissance was used to perform simplified liquefaction and lateral spreading *** empirical methods provide first order estimations of settlements and lateral spreading but are not sufficient when the nature of the structure-soil-structure interaction and earthquake sequence is *** of vertical displacements and building tilt,liquefaction manifestations,and structural and foundation parameters potentially affecting foundation settlements including foundation geometry,building contact pressure,and building elastic period were used to evaluate seismic response of the ground and the structures through empirical *** of the buildings exhibited poor to mediocre foundation performance due to liquefaction-prone subsurface profiles,especially on the *** field and numerical research will reveal the cause of significant ground failure in the area as well as refined estimates for the seismic deformations.

关键词： Turkiye earthquake Iskenderun settlement geo-structures liquefaction lateral spreading foundation performance building settlements seismic settlements

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Assessment of novel nature-inspired fuzzy models for predicting long contraction scouring and related uncertainties

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Frontiers of Structural and Civil engineering 2021年第3期15卷 665-681页

作者： Ahmad SHARAFATI Masoud HAGHBIN Mohammadamin TORABI Zaher Mundher YASEEN Department of Civil engineering Science and Research BranchIslamic Azad UniversityTehranIran Department of Structural Mechanics&Hydraulics engineering University of GranadaGranada18001Spain EIT.schnabel engineering Chadds FordPA19317USA New Era and Development in Civil engineering Research Group Scientific Research CenterAl-Ayen UniversityThi-Qar64001Iraq

The scouring phenomenon is one of the major problems experienced in hydraulic *** this study,an adaptive neuro-fuzzy inference system is hybridized with several evolutionary approaches,including the ant colony optimization,genetic algorithm,teaching-learning-based optimization,biogeographical-based optimization,and invasive weed optimization for estimating the long contraction scour *** proposed hybrid models are built using non-dimensional information collected from previous *** proposed hybrid intelligent models are evaluated using several statistical performance metrics and graphical ***,the uncertainty of models,variables,and data are *** on the achieved modeling results,adaptive neuro-fuzzy inference system-biogeographic based optimization(ANFIS-BBO)provides superior prediction accuracy compared to others,with a maximum correlation coefficient(R_(test)=0.923)and minimum root mean square error value(RMSE_(test)=0.0193).Thus,the proposed ANFIS-BBO is a capable cost-effective method for predicting long contraction scouring,thus,contributing to the base knowledge of hydraulic structure sustainability.

关键词： long contraction scour prediction uncertainty ANFIS model meta-heuristic algorithm

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Cell-based allometry:an approach for evaluation of complexity in morphogenesis

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Quantitative Biology 2023年第2期11卷 183-203页

作者： Ali Tarihi Mojtaba Tarihi Taki Tiraihi Department of Computer engineering Faculty of Computer Science and EngineeringShahid Behshti UniversityTehran 19839-69411Iran Department of Computer engineering Sharif University of TechnologyTehran 11365-11155Iran Department of Anatomical Sciences School of Medical SciencesTarbiat Modares UniversityTehran 14117-13116Iran

Background:Morphogenesis is a complex process in a developing animal at the organ,cellular and molecular *** this investigation,allometry at the cellular level was ***:Geometric information,including the time-lapse Cartesian coordinates of each cell's center,was used for calculating the allometric coefficients.A zero-centroaxial skew-symmetrical matrix(CSSM),was generated and used for constructing another square matrix(basic square matrix:BSM),then the determinant of BSM was calculated(d).The logarithms of absolute d(Lad)of cell group at different stages of development were plotted for all of the cells in a range of development stages;the slope of the regression line was estimated then used as the allometric ***,the lineage growth rate(LGR)was also calculated by plotting the Lad against the logarithm of the *** complexity index at each stage was *** method was tested on a developing Caenorhabditis elegans ***:We explored two out of the four first generated blastomeres in *** *** ABp and EMS lineages show that the allometric coefficient of ABp was higher than that of EMS,which was consistent with the complexityindexas well ***:The conclusion of this study is that the complexity of the differentiating cells in a developing embryo can be evaluated by allometric scaling based on the data derived from the Cartesian coordinates of the cells at different stages of development.

关键词： embryogenesis allometry complexity C.elegans bioinformatics skew matrix morphogenesis

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Analysis of a Simple Probe for <i>In-Situ</i>Resistivity Measurements

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Journal of Water Resource and Protection 2017年第1期9卷 1-10页

作者： Jens Munk Todd Petersen Matt Cullin William schnabel Department of Electrical engineering University of Alaska Anchorage Anchorage AK USA Department of Mechanical engineering University of Alaska Anchorage Anchorage AK USA University of Alaska Fairbanks Fairbanks AK USA

We present a probe factor for a simple measurement device, which can be used to determine in-situ electrical resistivity in soils or other penetrable bodies. The probe is primarily sensitive to the material immediately surrounding it and therefore is ideal for determining localized conductivities. The geometry of the probe can be scaled to effectively adjust the region of interest. The calibration, or “probe factor” is a function of the geometry, as well as the electrode configuration. Results are presented assuming a Wenner array configuration, however they can easily be extended to other geometries, such as the Schlumberger or dipole-dipole array.

关键词： Electrical Resistivity Measurements Soil Moisture Electrical Conductivity Geophysical Measurement

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Unveiling the mysteries of the Kermadec Trench

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The Innovation 2023年第1期4卷 22-23页

作者： Xiaotong Peng Weijia Zhang Kareen schnabel Daniel Leduc Hengchao Xu Hanyu Zhang Haibin Zhang Ashley Rowden Institute of Deep-sea Science and engineering Chinese Academy of SciencesSanya 572000China National Institute of Water&Atmospheric Research Private Bag 14-901Wellington 6140New Zealand Victoria University of Wellington PO Box 600Wellington 6140New Zealand

On October 29^(th),2022,scientists from China and New Zealand left Auckland on board the R/V Tansuoyihao to use,for the first time,the full-ocean-depth human-occupied vehicle(HOV)Fendouzhe to systematically explore the Kermadec *** first 1-month-long leg of the voyage was successfully completed on November 25th,*** HOV Fendouzhe conducted 16 dives between 5747 and 10010 m in depth,with five dives exceeding 9000 m and two dives to the Scholl Deep,the deepest point of the Kermadec *** November 4th,a first dive to the Scholl Deep was conducted by a scientist(*** schnabel)from New Zealand National Institute of Water&Atmospheric Research and two pilots(*** Deng and *** Yuan)from the Institute of Deep-sea Science and engineering,who spent 6 h exploring the Scholl Deep and the adjacent western slope of the *** was the first time a female scientist reached the deepest point of this *** a short return to Auckland for re-supply and staff changeover,the second leg of the voyage will be completed before the end of December with another 15 dives planned.

关键词： return exceeding trench

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