cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.17603/ds2-c6ta-x942
title: Soil Characterization
title: in Physico-Mechanical Characterization of Homogeneity and Isotropy of Prototype Earth Block Material

description: Compressed and stabilized earth blocks (CSEBs) are typically manufactured through one-side compaction. The resulting soil matrix-hydrated cement microstructure is heterogeneous, posing the question of whether CSEB materials can be considered homogeneous and isotropic for the purpose of analysis of CSEB structures, similar to rammed earth. As earth masonry emerges as a sustainable material for affordable and high-quality dwellings, addressing this question becomes relevant to define constitutive models for analysis and design, and interpret material test data for quality assurance and control.
This paper reports on a study of a representative CSEB material made of a lean clay and 6% of ordinary Portland cement by weight of soil. Cube specimens were saw-cut from different locations of CSEBs (i.e., corners, middle third), which were manufactured using a hydraulic press. Scanning electron microscopy images were used to gain visual evidence of the microscale and mesoscale heterogeneity. Energy-dispersive X-ray spectroscopy data were used to gain quantitative information on the chemical composition and its spatial distribution. Eighty-four cube specimens were tested under uniaxial compressive loads, either parallel or perpendicular to the compaction direction. One-way analysis of variance was enlisted to characterize the statistical significance of the difference between the mean compressive strength for different specimen groups. These groups were intended to assess the influence of location of the saw-cut cube in the source block to investigate homogeneity, and load direction to investigate isotropy. It is concluded that the representative CSEB material can be regarded as homogeneous and isotropic in terms of mechanical properties.
description: The objective was to characterize soil used to manufacture a prototype compressed and stabilized earth block (CSEB) material. The CSEB material used in this investigation was manufactured with 13 batches of soil collected from a construction lot in Lexington (SC). Representative samples (i.e., models) from each batch were tested to characterize the particle size distribution, Atterberg limits, and optimum moisture content following ASTM D6913 and D7928, ASTM D4318, and ASTM D698, respectively. Each soil batch was classified in conformance with ASTM D2487 as either lean clay (CL), clayey sand (CS), or silt (ML). The soil sand content varied from 14% to 59%, and fines content ranged between 41% and 86%. Furthermore, the liquid limit (LL) and plastic limit (PL) ranges were 30%-49% and 10%-23%, respectively. The results verified that the soil properties were in good agreement with gradation (e.g., 20%-70% fines) and plasticity ranges (e.g., 16%-28% LL) that have been identified as suitable for earth construction materials.
DOI: 10.17603/ds2-knxp-p380
title: Research Experiences for Undergraduates (REU), NHERI 2022: Exploration of the Utility and Accuracy of Apple iPad LiDAR Technology

description: The objective of this research paper is to evaluate the feasibility of using scans collected from various iPad LiDAR applications to connect and register Terrestrial LiDAR Scanner (TLS) scans to one another in indoor and outdoor environments. Information from this paper can give researchers insight into best practices when using mobile LiDAR applications and a better understanding of mobile LiDAR's limitations. This project is unique in that it measured the accuracy of mobile LiDAR data when used to connect TLS scans. Researchers in the Natural Hazards Reconnaissance field as well as people seeking to use LiDAR to create quality 3D images can benefit from the information presented in this research.
DOI: 10.17603/ds2-macr-8b71
title: Part I: Conducting a Systematic Literature Review—CONVERGE Extreme Events Research Check Sheets Series

description: This publication provides recommendations for systematically reviewing the literature to help researchers prepare to conduct extreme events research. Specifically, it recommends certain strategies for choosing search terms, search operators, databases, and other criteria to ensure that literature reviews are conducted in a systematic fashion that is objective, thorough, and reproducible. About the CONVERGE Extreme Events Research Check Sheets Series: The National Science Foundation-supported CONVERGE facility at the Natural Hazards Center at the University of Colorado Boulder has developed a series of short, graphical check sheets that are meant to be used as researchers design their studies, prepare to enter the field, conduct field research, and exit the field. The series offers best practices for extreme events research and includes check sheets that are free to the research community. More information is available at: https://converge.colorado.edu/resources/check-sheets.
DOI: 10.17603/ds2-nse7-2k20
title: Strategies for Conducting Doorstep Interviews After a Disaster—CONVERGE Extreme Events Research Check Sheets Series

description: This check sheet outlines strategies for conducting doorstep, or door-to-door, interviews in a post-disaster setting. Considerations outlined include researcher safety, cultural competence, remaining sensitive to the participant’s needs and emotions, and other strategies to support scientifically rigorous doorstep interviews. About the CONVERGE Extreme Events Research Check Sheets Series: The National Science Foundation-supported CONVERGE facility at the Natural Hazards Center at the University of Colorado Boulder has developed a series of short, graphical check sheets that are meant to be used as researchers design their studies, prepare to enter the field, conduct field research, and exit the field. The series offers best practices for extreme events research and includes check sheets that are free to the research community. More information is available at: https://converge.colorado.edu/resources/check-sheets.
DOI: 10.17603/ds2-wraz-4k52
title: ISROC Dataset for: Comparison of Modern and Pleistocene (MIS 5e) Coastal Boulder Deposits from Santa Maria Island (Azores Archipelago, NE Atlantic Ocean)
title: in Inundation Signatures on Rocky Coastlines (ISROC) Global Coastal Boulder Deposits Datasets Version 1

description: This document contains standardized data as an Excel and NC file and explanatory notes for "Comparison of Modern and Pleistocene (MIS 5e) Coastal Boulder Deposits from Santa Maria Island (Azores Archipelago, NE Atlantic Ocean)." This project includes 175 coastal boulder deposits of modern and Pleistocene origin on Santa Maria Island. Both types of boulders were used to test the change in storminess in this area, but there were no concrete results for varying storminess due to contrasting results.
description: This project is a collection of datasets on studies about coastal boulder deposits worldwide. Each document is a unique dataset that contains data from a published study. The document's name reflects the name of the associated paper, and all authors of papers are given credit in the respective document. Each dataset's data is standardized into an ISROC-formatted Excel and NC File. Also, every dataset has explanatory notes, which contain a data dictionary explaining data parameters and appropriate units, Some datasets have the raw data given to ISROC by the paper's authors. By creating a database in the public domain, ISROC hopes to promote academic collaboration in the field. ISROC, an NSF-funded research network, funds this project.
DOI: 10.17603/ds2-xa1b-ac84
title: Quasi-static cyclic loading tests on steel gravity framing with concrete slab
title: in System-level cyclic loading responses of composite steel gravity framing

description: This research investigated experimentally the seismic performance of steel gravity framing with a concrete slab at the system level. Two half-story, two-by-three bay steel gravity frame specimens were tested under cyclic loading. Bolted-bolted double-angle connections were used for a beam-to-column gravity connection. Primary design variables and construction details include the orientation of the metal deck to the loading direction, the presence or absence of metal deck seams on secondary beams, and the contribution of additional reinforcement bars in the concrete slab. Concrete blocks were positioned at the midpoint of each bay to simulate gravity loads, and a quasi-static displacement-controlled cyclic loading protocol was applied to the specimen using three hydraulic actuators. These investigations confirmed general observations from previous subassembly testing programs that the composite steel gravity framing system can provide substantial flexural stiffness, strength, and ductility under cyclic loading. Further, the test findings showed that the primary design variables and construction details significantly affected the cyclic behavior of composite gravity connections. Comparing the test results from a multi-bay setup and a subassembly testing setup, the cyclic behavior showed remarkable differences, especially for cases with weak axis decking or strong axis decking with a seam. These large differences are attributed to a significant separation of the girder from the column in the subassembly testing setup, which may not be present in a real building. Virtually all previous cyclic loading tests on gravity connections have been conducted in subassembly test setups. These subassembly tests are therefore the basis for the models that are currently used to include gravity frame connections in the seismic performance assessment of buildings, and these models may be quite inaccurate in some cases. The data generated in this system-level testing program is intended to support efforts to develop improved models of gravity connections subject to seismic loading.
DOI: 10.17603/ds2-2gab-dw61
title: Surface Wind Speed Measurements over Reduced-scale Topographic Models of Select Regions in Puerto Rico in a Large BLWT
title: in Modeling of Wind Speed Up for Microzoning of Design Wind Speeds in Puerto Rico

description: This project investigates topographic wind effects (i.e. speed up) for the main island of Puerto Rico and
the municipal Islands of Vieques and Culebra with the goal of advancing our understanding of how
geomorphic complexity (topography) enhances the surface wind field at structural height and ultimately
exacerbates damage to civil infrastructure and lifelines.
description: A selected set of six regions of Puerto Rico and the municipal islands of Vieques and Culebra were modelled at reduced geometric scale. Surface wind speed measurements were collected using TFI Cobra Probes mounted to an automated instrument traverse.
DOI: 10.17603/ds2-6jy8-1n72
title: NEESR E-Defense Base Isolation 2013: 2 calibrated linear FEM

description: After participation in testing of a base-isolated structure at E-Defense in 2013, and a system identification of the structure model performed, a finite element model of the structure was developed and calibrated to match the modal properties of the system identification.
DOI: 10.17603/ds2-ad14-vf88
title: Modeling Structural Dynamics with 3D Printed Parts
title: in 3D-Printing Dynamics Design (3D3) Competition – Fall 2024

description: The concepts of structural dynamics are incorporated into the following 4 challenges. Each chapter includes one challenge, showcasing a different concept exemplified with 3D printed designs. In the first chapter the goal was to design a 3D printed wheel that had the lowest possible acceleration when 4 nuts were press fit into it. The design had restraints requiring creative solutions to solve problems. Challenge 2 was all about designing a reciprocating motion mechanism to drive a table. The target for this was originally to archive 15g but due to constraints of materials this was modified. In Challenge 3 the task was to design 4 columns for a provided 3D printed structure. The goal was to create structure with a natural frequency of 4.5 Hz. The last challenge was all about seeing how the structure created in Challenge 3 reacted when a driving frequency was applied to it by the table created in Challenge 2.
description: The 3D-printing Dynamics Design (3D3) Competition intends to train School of Civil Engineering & Environmental Science (CEES) undergraduates at the University of Oklahoma in fundamental concepts related to vibrations, structural dynamics, and earthquake engineering through a semester-long, hands-on competition run in parallel with Introduction to Dynamics for Architectural and Civil Engineers (CEES 3263). Competition participants, or 3D3 Scholars, design, build, and test a bench-scale shake table using 3D-printed components. The designs of these shake tables are published here, along with all the STL files needed for teachers or students elsewhere to fabricate the tables. Also, the data collected during the challenges is published.
DOI: 10.17603/ds2-p51m-cb37
title: State of Technology Transfer in the Natural Hazards Research Infrastructure (NHERI) Research: 2021 Annual Report

description: Formed in 2019, the NHERI Technology Transfer Committee (TTC) with support of the NHERI Network Coordination Office educates researchers —especially young researchers—about typical ways that research is implemented.  The TTC also will assist NHERI researchers with implementation issues specific to a particular award. TTC members have evaluated a sample of active projects through analysis of the research plan and development, and interviews to researchers to determine the state if implementation planning within the NHERI community of researchers. Overall, the TTC found that implementation potential is strongly related to research planning as well as the level of interest and efforts by the researchers to disseminate the applicability of the results. In addition, Appendix A, Mechanisms for Implementation of NHERI Research Results includes strategies for technology transfer. TTC members are volunteers with ample experience in standards design, code development and applied technology as well as knowledge of all the organizations and institutions around such activities. This report is focused on research awards that appear to have high implementation potential.  A second study is underway focusing on awards that, based on the project summaries, do not have high potential for immediate implementation.
DOI: 10.17603/ds2-vjes-9h92
title: Trip 1 - Haines Alaska Landslide
title: in RAPID: Haines Alaska Landslide

description: Trip 1 - The main objective of this project was to collect perishable data following the December 2020 weather event that caused multiple landslides in the area around Haines, Alaska.
description: The main objective of this project was to collect perishable data following the December 2020 weather event that caused multiple landslides in the area around Haines, Alaska.  The data can be used for change detection of the landslide areas.  This project captured data on landslides following a rain-on-snow event in Southeast Alaska, which makes it unusual.  The audience consists of those with an interest in geomorphic change, geotechnical engineering, or landslide analysis.
DOI: 10.5281/zenodo.15577014
title: Table 1 in Description of Atherinella brasiliensis (Quoy & Gaimard, 1825) (Atheriniformes: Atherinopsidae) larvae from the Jaguaribe River estuary, Itamaracá island, Northeastern Brazil

description: Table 1. Morphometrics of preflexion, flexion, postflexion stages and juveniles of Atherinella brasiliensis (expressed as percent of SL, except for ED, expressed as percent of HL). Mean ± SD is given when sample size n>1. Dashed lines differentiate preflexion (1), flexion (2), postflexion (3) stages and juveniles (4). Abbreviations: HL = head length; ED= eye diameter; BD = body depth; PAL = preanal length; PDL = predorsal length, nv = not visible; nd = not defined.
Stage/periodSL (mm)nHLEDBDPALPDL12.3 – 3.01618.52 ± 1.8953.02 ± 4.8416.09 ± 0.82 (n=5)nvnv3.2 – 3.51618.15 ± 1.6049.49 ± 3.7715.42 ± 0.92nvnv3.6 – 3.91319.87 ± 2.4242.23 ± 5.2515.71 ± 2.16nvnv4.0 – 4.71718.25 ± 2.3947.87 ± 5.5814.20 ± 2.12nvnv24.4 – 4.6220.01 ± 0.6350.00 ± 7.86ndnd58.89 ± 0.285.1 – 5.7522.92 ± 2.2936.27 ± 1.9514.18 ± 4.1354.81 ± 1.5469.40 ± 2.336.0 – 6.5620.68 ± 0.6034.92 ± 4.8015.12 ± 1.6754.75 ± 3.6369.94 ± 2.356.8122.7938.719.8255.8858.8237.4 – 8424.47 ± 2.6639.58 ± 3.589.64 ± 3.10ndnd8.2 – 9525.30 ± 3.0840.30 ± 7.0711.22 ± 1.0460.34 ± 0.8672.22 ± 1.209.4123.4036.3611.7057.4569.1511.212535.7116.0657.1471.4311.8125.4233.3315.2558.4771.19411.6124.1435.7117.2455.1768.9712323.8933.1213.3355.2869.7213123.0830.0011.5453.8566.9214.20123.9441.1812.6856.3453.5234 – 39224.59 ± 1.4930.63 ± 0.8816.13 ± 0.7657.30 ± 4.9173.54 ± 3.3441 – 48224.82 ± 0.2631.49 ± 4.4716.87 ± 0.2958.71 ± 3.0076.54 ± 2.6755124.3629.1018.0060.9176.7365123.5429.4118.6261.8576.6272123.8927.3318.7565.8376.8177121.6927.5416.4961.0477.53
description: Published as part of França, Elton J., Severi, William, Castro, Maviael F., Medeiros, Tatiane N. & El-Deir, Ana Carla A., 2007, Description of Atherinella brasiliensis (Quoy & Gaimard, 1825) (Atheriniformes: Atherinopsidae) larvae from the Jaguaribe River estuary, Itamaracá island, Northeastern Brazil, pp. 372 in Neotropical Ichthyology 5 (3) on page 372, DOI: 10.1590/s1679-62252007000300016, http://zenodo.org/record/15576958
DOI: 10.17603/ds2-3e79-4e07
title: Data Files for Community Seismic Network (CSN) Ground Motion Study

description: The Community Seismic Network (CSN) is a low-cost strong-motion network deployed at much higher density than traditional seismic networks. We performed semi-automated, component-specific data processing with the aim of optimizing usable bandwidth following procedures consistent with Next Generation Attenuation (NGA) project protocols for 29 earthquakes in Southern California for all CSN and non-CSN stations that recorded each event. The present dataset includes computed intensity metrics including peak velocity (PGV) and acceleration (PGA), 5% damped spectral accelerations (PSA), effective amplitude spectra (EAS) (Kottke et al. 2021), cumulative absolute velocity (CAV), thresholded cumulative absolute velocity (CAV5), Arias intensity (IA), and times to achieve every 5th percentile of the maximum Arias intensity (used to compute significant durations); metadata related to source, path, and site conditions; intensity metrics are computed for the as-recorded components (H1, H2, and V) and for the minimum, median, and maximum combined horizontal components as defined by Boore (2010) (RotD0, RotD50, and RotD100, respectively). Note that the unprocessed time-series in their original raw format can be obtained from the CSN webpage (http://csn.caltech.edu/data) for the CSN data and the Incorporated Research Institutions for Seismology (IRIS; Trabant et al. 2012) for the non-CSN data. The processed time-series data can be obtained at https://gmdatabase.org. These data were utilized by Stewart et al. (2023) to examine the usability of ground motions recorded by the CSN.
DOI: 10.17603/ds2-3q26-td86
title: Texas Winter Storm (2021) Social Survey

description: As part of a National Science Foundation collaborative research project investigators at the University of Utah (Drs. Timothy Collins and Sara Grineski) and the University of Texas at El Paso (Dr. Jayajit Chakraborty) examined the 2021 Texas Winter Storm (i.e., Winter Storm Uri). The investigators applied a social vulnerability to disasters perspective to the 2021 Texas Winter Storm (as well as interacting power/water outages and the COVID-19 pandemic) to advance knowledge of the socially uneven impacts of cascading disasters, and disaster vulnerabilities experienced by subsidized rental housing residents. The project relied on collecting social survey data regarding households' experiences and analyzing data from this survey and other secondary sources. The survey was conducted by cellular phone in English and Spanish with 897 randomly selected households residing in counties that comprise eight Texas metropolitan areas: Dallas-Fort Worth, Houston, San Antonio, Austin, McAllen, El Paso, Beaumont-Port Arthur, and Lubbock. This included 147 households living in US Department of Housing and Urban Development (HUD)-assisted rental housing developments and 750 households residing in private (not HUD-assisted) homes. The survey questionnaire (English and Spanish versions), IRB approval, csv-formatted codebook and dataset (without identifiable information from the survey or secondary sources), and publications based on analyses of the survey dataset are presented in this repository. The data for this project may be reused but attribution is required (see terms of Open Data Commons Attribution license).
DOI: 10.17603/ds2-9cc1-8139
title: 2018 Camp Fire Data Collection

description: This data set includes:
- Drone data at Pine Ridge Elementary School 
- LiDAR and drone data at Achieve Charter High School (metal building structure)
- Drone data at the Safeway in Paradise, CA
- LiDAR and drone data of Ponderosa Pine Elementary School
DOI: 10.17603/ds2-fs8y-z482
title: Electronic Files of Shear Wave Velocity and Cone Penetration Test Measurements from the Greater Charleston Area, South Carolina

description: Electronic files of shear wave velocity (Vs) and Cone Penetration Test (CPT) measurements from 226 investigation sites in the greater Charleston area are presented in this report. Of the 226 investigation sites where shear wave velocity tests were conducted, 135 are sites where electronic files of CPT measurements are also available. Summary information of latitude and longitude coordinates, surficial geology, maximum test depth, groundwater table depth, type of test, and source of test data for each site is also presented. Most of the test locations lie within the artificial fill and Qws surficial deposits mapped by Weems, Lemon and others. Fewer test sites lie within surficial deposits designated as phosphate spoil, Qal, Qht, Qhs, Qhec, Qhes, Qwc, Qwls, Qtc, Qts, Qlc, and Qpc deposits.