Article
Chemistry, Physical
Rajas Poorna, Wei-Wen Chen, Peng Qiu, Marcus T. Cicerone
Summary: Raman spectroscopy has the ability to distinguish different cell phenotypes based on their metabolic profiles that change with transcriptomic activity. However, associating Raman spectral changes with specific signaling pathways can be challenging due to weak signals and individual variations. In this study, broadband coherent anti-Stokes Raman scattering (BCARS) microscopy is used to map the C. elegans hermaphrodite gonad at subcellular resolution. The results show that the BCARS spatio-spectral signatures correlate with gene expression profiles, indicating the potential of BCARS as a spatially resolved omics surrogate.
JOURNAL OF PHYSICAL CHEMISTRY B
(2023)
Article
Meteorology & Atmospheric Sciences
Jonathan D. Labriola, Louis J. Wicker
Summary: This study introduces a technique to generate physically coherent and spatially correlated initial-condition perturbations and demonstrates its utility in diverse environments through ensembles of simulations.
QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY
(2022)
Article
Engineering, Civil
Wenqi Du, Sen Long, Chao-Lie Ning
Summary: This paper presents an algorithm for selecting ground motions from a database for multiple sites under earthquake scenarios. The algorithm constructs the target distribution of spectral accelerations at multiple sites by considering the spatial correlation of ground motions. It then randomly simulates response spectra and selects recorded ground motions that match the simulated spectra. Validation examples demonstrate that the selected ground motions realistically capture the target distribution of response spectra. The computational expense of the algorithm is found to be generally acceptable. The algorithm can be used for selecting ground motions as inputs for dynamic analysis of spatially distributed buildings.
JOURNAL OF EARTHQUAKE ENGINEERING
(2022)
Article
Engineering, Geological
Roberto Gentile, Carmine Galasso
Summary: This paper investigates the trade-off between simplicity and accuracy in seismic fragility analysis of reinforced concrete frames. Different response analysis methods are compared, with results showing that simplified methods generally provide estimates within +/- 20% of those from more advanced methods, with slightly higher errors for uniformly-infilled frames.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2021)
Article
Engineering, Geological
Lucia Pratico, Marco Bovo, Nicola Buratti, Marco Savoia
Summary: This paper presents a new method for assessing the seismic performance of precast reinforced concrete structures at various limit states. Through a case study of 91 buildings in an industrial area in Modena, it is found that the method is reliable and can be used to predict seismic damage scenarios.
BULLETIN OF EARTHQUAKE ENGINEERING
(2022)
Article
Energy & Fuels
Gilson M. Silva Neto, Alessandra Davolio, Denis J. Schiozer
Summary: A methodology of applying a weak-constraint formulation to time-lapse seismic data assimilation is proposed to mitigate the influence of model errors. By considering an additive term for forward model error and updating it during the data assimilation workflow, significant improvements in data assimilation results can be achieved.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Engineering, Civil
Benwei Hou, Qianyi Xu, Zilan Zhong, Junyan Han, Huiquan Miao, Xiuli Du
Summary: This paper proposes a framework based on quasi-Monte Carlo simulation to evaluate the seismic reliability of pipeline networks under spatially correlated parameters. The study shows that spatial correlations have different influences on the seismic connectivity reliability of pipeline networks with different topological redundancy and connective paths.
STRUCTURE AND INFRASTRUCTURE ENGINEERING
(2022)
Article
Engineering, Civil
Haiyang Pan, Hong-Nan Li, Chao Li, Li Tian
Summary: This study numerically investigates the influence of underground spatially correlated earthquake motions (USCEMs) on the seismic behaviors of large-span buried pipelines. The results demonstrate that different spatial variability parameters can impact the seismic responses of the pipelines to varying degrees.
JOURNAL OF EARTHQUAKE ENGINEERING
(2022)
Article
Computer Science, Information Systems
Lisiane Pruinelli, Jiaqi Zhou, Bethany Stai, Jesse D. Schold, Timothy Pruett, Sisi Ma, Gyorgy Simon
Summary: A novel convolution-based change detection methodology was developed and successfully validated on different datasets, accurately estimating missing time stamps in electronic health record data. The method showed high estimation accuracy in events like liver transplantation and demonstrated good generalizability.
JOURNAL OF THE AMERICAN MEDICAL INFORMATICS ASSOCIATION
(2021)
Article
Construction & Building Technology
Nacim Yousfi, Mahmoud Bensaibi, Nabila Guessoum, Mehdi Boukri
Summary: The study investigated the seismic vulnerability of strengthened masonry buildings, revealing their nonlinear dynamic behavior and susceptibility to earthquakes. Analyses were conducted using vulnerability index and average damage rate, with comparisons made between three vulnerability classes.
STRUCTURAL ENGINEERING INTERNATIONAL
(2022)
Article
Engineering, Civil
Xiao Lai, Zheng He, Yan Wu
Summary: A modified flexural shear model (FSM-MS) is developed to address the non-uniform distributions of story mass and stiffness in super high-rise buildings and provide an efficient estimate of their maximum inter-story drift (ISD) demands. Statistical relations and building data are used to validate the efficiency of the model in estimating the ISD demands accurately.
ENGINEERING STRUCTURES
(2021)
Article
Engineering, Civil
Supasit Srivaranun, Mitsuyoshi Akiyama, Taiki Yamada, Dan M. Frangopol, Jiyu Xin
Summary: Chloride-induced corrosion of tensile rebars in reinforced concrete structures causes cracking in the concrete surface along corroded rebars. The width of these cracks could provide valuable information for estimating the amount of steel weight loss inside concrete beams. However, the distribution of cracks in beams with multiple rebars is affected by both the corrosion expansion of the corresponding rebar and that of adjacent rebars, resulting in a complex nonlinear relationship between crack width and amount of steel corrosion. A combined experimental-machine learning approach using generative adversarial networks (GANs) is developed in this study to estimate steel corrosion distributions in RC beams. A pix2pix network is trained using a dataset of steel weight loss generated based on random field theory and the distributions of corrosion crack widths constructed using finite element analysis. Monte Carlo-based FE analysis is then used to obtain the probability density function (PDF) of the flexural capacity for corroded RC beams. A case study is presented to investigate the effect of observed crack width distributions on the PDF of the flexural capacity for aging RC beams with spatially correlated rebar corrosion in transverse and longitudinal directions.
ENGINEERING STRUCTURES
(2023)
Article
Construction & Building Technology
Carlos Gonzalez, Mauro Nino, Gustavo Ayala
Summary: Concerns about prolonged downtime and functionality losses after recent seismic events indicate a shift towards a resilience-based approach in seismic design. This study presents a probabilistic approach to estimate recovery times and functionality loss in buildings, allowing for the quantification of seismic resilience through consideration of delay times and non-structural elements. Implementation of this approach in a public school building database in Puebla City revealed the weak elements in the Mexican educational infrastructure and highlighted the importance of including delay times and non-structural elements in resilience quantification to avoid overestimation.
Article
Geochemistry & Geophysics
Tormod Kvaerna, Steven J. Gibbons, Sven Peter Nasholm
Summary: The International Monitoring System relies on three primary seismic arrays for detecting and locating small seismic events around the Sea of Japan. The use of empirical matched field processing (EMFP) helps reduce bias and improve source localization by comparing narrowband phase shifts between sensors. MJAR array, with complex geology, benefits from spectrogram beamforming for high-frequency signals detection, while 3-component sensors show potential for improved detection and estimation of S-phases.
JOURNAL OF SEISMOLOGY
(2021)
Article
Engineering, Civil
Mehrdad Aftabiazar, Kazem Shakeri, Afsaneh Salehian
Summary: Performance coefficients play an important role in seismic design, but current codes do not differentiate between near-fault and far-fault earthquake records. This study evaluated special concentrically braced frame structures in a high seismic hazard region and calculated performance coefficients under the influence of near- and far-fault records. The results showed that the behavior factor for near-fault records was 35% lower than that for far-fault records.
PERIODICA POLYTECHNICA-CIVIL ENGINEERING
(2022)
