cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.4231/3r21-h908
title: Analysis of Drone-based Last-mile Delivery Systems under Aerial Congestion: A Continuum Approximation Approach

description: &lt;p&gt;This dataset presents a systematic analysis and design framework for a spectrum of last-mile delivery systems that leverage unmanned aerial vehicles (UAVs). Four distinct modes are considered: (1) direct drone deliveries from a fixed depot; (2) drone deliveries from parked trucks that carry bulk parcels to customer neighborhoods; (3) drone deliveries from nonstopping trucks that tour customer neighborhoods; and (4) as a benchmark, traditional truck-based home deliveries. We present a new continuum-approximation approach that is used for analysis of both truck routing and aerial-UAV traffic. We compared the operational cost and efficiency of different delivery schemes to reveal how a certain scheme is the most efficient under various scenarios. We demonstrate the applicability of our model on expansive real-world roadway networks and further conduct analysis on grid networks, yielding key analytical insights. The drone-based delivery is demonstrated to be superior to conventional truck-only delivery, suggesting a significant potential for socioeconomic benefit. It is observed that when servicing a relatively low demand over a small area, dispatching drones directly from the distribution facility is the most efficient method. As the demand grows or spans a wider area, collaborative strategies are preferred, as they better cope with certain aspects, such as the long line-haul cost or the ramping aerial congestion, by striking a balance between efficiency and flexibility.&lt;/p&gt;
description: This study presents a systematic analysis and design framework for a spectrum of last-mile delivery systems that leverage unmanned aerial vehicles (UAVs).
DOI: 10.4231/f281-zz69
title: Enhancing Construction Work-Zone Safety by Passive Pavement-to-Vehicle Communication

description: &lt;p&gt;Construction work zones for roads pose significant safety challenges for drivers and workers, which can lead to accidents, injuries, fatalities, and property damage. Enhancing construction work-zone safety requires an understanding of the factors influencing accidents and fatalities and an evaluation of existing safety and traffic-management measures. The objective of this study was to improve work-zone safety for roadways, by connecting passive material sensing in the road with vehicle communication systems. A review of the main roadway work-zone safety literature found driver behavior, traffic congestion, and signage effectiveness to be the most significant factors. Vehicle speed, type of vehicles, type of collisions, and environmental conditions were found to have the most impact on the fatality rate in work zones. Past attempts to improve work-zone safety include adding rumble strips, more warning signs, and implementing smart-work-zone (SWZ) technologies. SWZ communication in-vehicle was found to reduce traffic speeds and promote faster and more consistent merging in the work-zone transition area. Pavement-assisted passive sensing, coupled with vehicle-to-infrastructure (V2I) communication, may offer enhanced in-vehicle speed and lane-merge warnings, which could improve driver awareness, reduce vehicle speeds, and improve work-zone safety. A laboratory-based experiment was developed to validate the theoretical configurations of smart work zones (SWZ) using passive pavement sensing, with the objective being to determine suitable spacings and inclination angles for the electromagnetic (EM) strips as speed and lane-merge warning systems, respectively. The experimental results revealed that these EM strips can estimate vehicle speed with sufficient accuracy, and the spacing of the EM-sensing strips influences the signal intensity. Additionally, the spacing and inclination angle of the EM strips influence the captured signals. This lab pilot study clearly demonstrated the potential of EM-based strips in enhancing speed and lane-merge warning systems using V2I technology for improved safety in roadway work zones.&lt;/p&gt;
description: A laboratory-based experiment was developed to validate the theoretical configurations of smart work zones (SWZ) using passive pavement sensing.
DOI: 10.4231/weyj-eg42
title: Pavement Distresses Due to Truck Platoons: A Holistic Analysis

description: &lt;p&gt;Currently, AASHTOWare Pavement Mechanistic Empirical Design (PMED) does not contain a framework to compute distresses for loading scenarios like truck platoons. Truck platoons reduce fuel consumption and improve safety; however, they increase pavement damage because of a reduction in wander and rest period. The important parameters of truck platoons are wander, rest period, and penetration level. Unlike wander, the effect of reduced rest period on permanent deformation are not well documented. Rest period (i.e., truck spacing) is a critical parameter in platoons that could be controlled to reduce damage and to improve fuel savings. Shorter rest periods resulted in lower permanent deformation through conventional repeated load triaxial testing. However, the test does not entail a representative load stress pulse because of moving loads. This study used modified triaxial testing equipment to simulate different load pulses. Reduced triaxial compression was critical over the conventional load stress pulse. For all representative pulses, the effect of rest period was similar (i.e., increasing rest period increased permanent deformation). Consequently, a framework was developed to compute pavement distresses as a function of truck platoon parameters. Truck platoons distributed uniformly on sublanes resulted in the lowest damage, even lower than a conventional trucking operation. Truck spacing of 60 ft is optimal in terms of safety, as the difference in distresses were minimal compared to spacing at 18 ft.&lt;/p&gt;
description: The main goal of the study was to understand the effect of truck platoons qualitatively and quantitatively on pavement distresses.
DOI: 10.4231/tpkm-6075
title: Diversity of organic components in airborne waste discharged from sewer pipe repairs

description: &lt;p&gt;Air-discharged waste from commonly used trenchless technologies of sewer pipe repairs is an emerging and poorly characterized source of urban pollution. This study reports on the molecular-level characterization of the atmospherically discharged aqueous-phase waste condensate samples collected at four field sites of the sewer pipe repairs. The molecular composition of organic species in these samples was investigated using reversed-phase liquid chromatography coupled with a photodiode array detector and a high-resolution mass spectrometer equipped with interchangeable atmospheric pressure photoionization and electrospray ionization sources. The waste condensate components comprise a complex mixture of organic species that can partition between gas-, aqueous-, and solid-phases when water evaporates from the air-discharged waste. Identified organic species have broad variability in molecular weight, molecular structures, and carbon oxidation state, which also varied between the waste samples. All condensates contained complex mixtures of oxidized organics, N- and S-containing organics, condensed aromatics, and their functionalized derivatives that are directly released to the atmospheric environment during installations. Furthermore, semi-volatile, low volatility, and extremely low volatility organic compounds comprise 75&ndash;85% of the total compounds identified in the waste condensates. Estimates of the component-specific viscosities suggest that upon evaporation of water waste material would form the semi-solid and solid phases. The low volatilities and high viscosities of chemical components in these waste condensates will contribute to the formation of atmospheric secondary organic aerosols and atmospheric solid nanoplastic particles. Lastly, selected components expected in the condensates were quantified and found to be present at high concentrations (1&ndash;20 mg L&lt;sup&gt;&minus;1&lt;/sup&gt;) that may exceed regulatory limits.&lt;/p&gt;
description: Repair of sewer pipes in urban areas using trenchless cured-in-place-pipe technology emits a complex mixture of organic species partitioning between the gas-, aqueous-, and solid-phases that contribute to the production of environmental nanoplastics.
DOI: 10.4231/0btg-8d39
title: Data for &quot;Institutional hybridity and policy-motivated reasoning structure public evaluations of the Supreme Court&quot;

description: &lt;p&gt;How does the public assess the Supreme Court and its work? Using data from three surveys conducted over a span of ten years, we show that individuals&rsquo; policy preferences drive evaluations of the Court and its willingness to reform the Court. We find strong evidence that the Court&rsquo;s hybrid legal-political nature enables a unique form of policy-motivated reasoning: respondents who agree with Court outputs view the Court and its work as more &ldquo;legal&rdquo; in nature, while those who disagree view both as more &ldquo;political.&rdquo; Our findings stand in contrast to longstanding views in the literature that the public views the Court as a fundamentally different sort of institution that stands largely separate from politics. The fact that policy attitudes powerfully inform the public&rsquo;s assessment of the Court has crucial implications for the ongoing debates over Supreme Court power.&lt;br /&gt;
&lt;br /&gt;
This file contains replication materials for the paper &quot;Institutional hybridity and policy-motivated reasoning structure public evaluations of the Supreme Court&quot;. The *.dta files archived here contain all of the data used in this paper. Data from Study 1 come from the American National Election Survey (ANES). The ANES in 2012 interviewed 5,916 respondents using an address-based sample using a dual mode (face-to-face and Internet) study format. Data for Study 2 come from the UMass Poll. The UMass survey had 1000 respondents interviewed by YouGov who were drawn to be representative of respondents in the 2019 American Community Survey. Data for Study 3 are original; they were collected by the authors in 2018. This is a non-probability sample consisting of 1,000 Americans drawn from SSI&rsquo;s panel. The survey was fielded between May 9 and May 21, 2018. For further details, see the article (especially the &quot;Methods&quot; section), and the &quot;Read-me&quot; and codebook files here. &lt;/p&gt;
description: We find strong evidence that the Court’s hybrid legal-political nature enables a unique form of policy-motivated reasoning.
DOI: 10.4231/vrvp-k166
title: 2023 Diverse Corn Belt farmer survey data and metadata

description: &lt;p&gt;In 2023, a mail survey was conducted with Midwestern agricultural producers/landowners as part of the USDA-NIFA Sustainable Agriculture Systems funded Diverse Corn Belt project (https://diversecornbelt.org/). The purpose of the survey was to measure perceptions and attitudes of agricultural producers/landowners about barriers and opportunities of agricultural diversification in Illinois, Indiana, and Iowa.&lt;/p&gt;

&lt;p&gt;A stratified sample of agricultural producer/landowner addresses was purchased from DTN (https://www.dtn.com/) based on proportional representation by state, produced crop/livestock type, and farm size. Surveys were mailed to 3,300 producers/landowners in Illinois, Indiana, and Iowa. A total of 1053 responses were received with 725 agricultural producers/landowners completing the survey for a response rate of 23%.&lt;/p&gt;

&lt;p&gt;This publication includes one Excel file data file and PDF files containing the survey code book, the survey questionnaire used to collect the data, survey design and sampling strategy, and the Purdue University Natural Resources Social Science Lab&#39;s Standard Operating Procedure for survey development, distribution, and management. The Excel data file contains three data worksheets including: (1) 1058 lines of raw, cleaned, unidentifiable data collected from the 2023 survey respondents showing QUAL columns for data transparency, two surveys with no responses, and three surveys categorized as &quot;missing&quot; due to noted data entry error and re-entry of data; (2) a modified version of the respondent data for analysis (this includes 725 lines of data due to removal of surveys with no responses, missing surveys, and response categories of &quot;refusal&quot; and &quot;bad address&quot;); and (3) the metadata.&lt;/p&gt;

&lt;p&gt;Support for this research was provided by USDA National Institute of Food and Agriculture (NIFA), Sustainable Agriculture Systems Award Number 2021-68012-35896, project titled &quot;DiverseCornBelt: Enhancing rural resilience through landscape diversity in the Midwest&quot;.&lt;/p&gt;
description: The Diverse Corn Belt project's final dataset for a mail survey conducted with agricultural producers/landowners in Illinois, Indiana, and Iowa to identify pathways and barriers to diversifying the Midwestern agricultural landscape.
DOI: 10.4231/swe2-fx07
title: Context Pottery of the Boğsak Archaeological Survey: Processed Ceramics, 2015-2021. Data from all sites

description: &lt;p&gt;Under the direction of Dr. G&uuml;nder Varinlioğlu of Mimar Sinan Fine Arts University in Istanbul Turkey, the Boğsak Archaeological Survey Project has been ongoing since 2010. The survey team was investigating a small, minimally inhabited islandscape on the south Anatolian coast (Silifke district / Mersin province). The significance of this region arises less from its immediate history than it does from its situation straddling crucial sea lanes to important nearby places. Approximately 18 km southwest of modern day Silifke (ancient Seleucia on the Calycadnus), the survey region incorporates several small, yet, significant archaeological sites, including İncekum (perhaps ancient &lt;i&gt;Ağa Limanı&lt;/i&gt;), Boğsak (ancient &lt;i&gt;Limen Nesoulion), &lt;/i&gt;Boğsak Island (&lt;i&gt;Asteria&lt;/i&gt; and &lt;i&gt;Akra Epinesia&lt;/i&gt;), Tahta Limanı (perhaps ancient &lt;i&gt;Palaia&lt;/i&gt;), Dana Island (ancient &lt;i&gt;Pityoussa&lt;/i&gt;), and Ovacık (ancient Aphrodisias). Despite the barrenness and isolation of this islandscape, it remains noteworthy for two recurring features: an array of fortified complexes that date to Pre-Roman eras and a cluster of dense-packed settlements of Late Antiquity. There is minimal evidence of settlement in between, suggesting that the pattern here conforms with the model of rollercoaster demographics (Bevan and Conolly 2013). Roller-coaster demographics has been used to explain the recurrent pattern of temporary settlement followed by relative abandonment at remote Mediterranean islands of limited carrying capacity. This comparatively discontinuous record of human activity furnishes a less complicated palimpsest than settlements characterized by sustained occupation, thus, affording potentially greater clarity for those eras when wider connections and commensurate geopolitical and economic linkages transpired.&lt;/p&gt;

&lt;p&gt;This collection of processed ceramics and artifactual remains results from systematic pedestrian surveys conducted at Boğsak Island (2015 and 2016/17), Dana Island (2016-2019), Aphrodisias (2017-2019), and Tahta Limani (2016-17). The pedestrian surveys were directed by Nicholas Rauh (Purdue U.) and Noah Kaye (Michigan State U.). The linked datasets display more than 3500 fragments of processed ceramics, glass, metal, and stone encountered at these sites. Each dataset includes identifications, descriptions, measurements, and images of the remains as well as location information including survey transect, unit, and georeferenced find locations. This dataset contains data that have been previously published in datasets that focused on individual sites and no images. The chronotypes and other classification categories were reviewed and remediated or corrected when necessary before publication.&lt;/p&gt;
description: The Boğsak Archaeological Survey Collection contains descriptions of more than 3500 pottery fragments collected between 2015 and 2021. The collection consists of five geographically distinct datasets.
DOI: 10.4231/5cmc-9w40
title: Volcanic-arc rock weathering in Puerto Rico

description: &lt;p&gt;This dataset concerns watershed-scale hydrology, erosion, and weathering in 30 tropical, montane watersheds in Puerto Rico that are underlain by volcanic-arc rocks (with a modal composition of basaltic andesite). The dataset comprises watershed locations and physical characteristics, wet and dry season water quality data, sediment geochemistry and derived weathering indices, estimated specific discharges and solute fluxes, cosmogenic &lt;sup&gt;36&lt;/sup&gt;Cl derived erosion rates, and soil order data. All data types are available in 27 of the 30 study watersheds. This dataset was collected between 2020 and 2022 (although includes a single sample from 2019) to study the factors that control volcanic-arc rock weathering rates in the humid tropics.&lt;/p&gt;

&lt;p&gt;In addition, a compilation of discharge data from USGS stream gauges in Puerto Rico and watershed-averaged precipitation rates in the gauged catchments are included. These data are used to generate rainfall-runoff relationships and estimate specific discharges in the study watersheds, which are mostly ungauged.&lt;/p&gt;

&lt;p&gt;The dataset is presented in 10 tables that are included in a single excel file (.xlsx). In addition, &lt;i&gt;GNU Octave&lt;/i&gt; code packages to determine watershed-averaged nucleonic scaling factors, calculate erosion rates from Cl isotope ratios, target chemistries, and watershed-averaged scaling factors, and to calculate York regressions between weathering and erosion data are included. This dataset was produced with support from NSF-EAR-2011358 and NSF-EAR-2011342. &lt;/p&gt;
description: Data on hydrology, weathering, and erosion in volcanic-arc rock watersheds in Puerto Rico collected 2020-2022.
DOI: 10.4231/zd3q-rv18
title: A Python tool converting geophone to DAS response

description: &lt;p&gt;This script delineates the development and validation of a specialized Python tool devised to enhance geophysical data analysis on Distributed Acoustic Sensing (DAS). The tool skillfully converts geophone measurement to DAS strain responses.&lt;/p&gt;

&lt;p&gt;The input of the script contains continuous 3-component point displacement measurements from geophone, their corresponding Cartesian coordinate locations and a designated gauge length (depends on instrument). Through integration along the fiber within the established gauge length, the script output the equivalent numbers of DAS strain response. Featuring a sub-function convert velocity to displacement, this tool can also convert displacement/velocity to DAS strain/strain rate response. The time complexity is limited by the spacing of geophone and gauge length, but acceptable for practical scenario where the number of continuous geophone measurements is less than 1000.&lt;/p&gt;

&lt;p&gt;The tool has been validated through rigorous numerical experiments, wherein pseudo plane waves were generated and the result is compared with established plane wave analytical solutions. This contribution serves as a step towards refining data processing methodologies in geophysical studies, fostering a seamless and efficient transition to modern DAS technologies.&lt;/p&gt;
description: This Python tool converts geophone data to DAS strain responses by integrating the displacement component along the fiber within the gauge length. The accuracy is validated through numerical experiments and comparison with plane wave analytical solution.
DOI: 10.4231/053g-dr41
title: Analytic Modeling of Distributed Acoustic Sensing Signals: Matlab Codes for DAS Wavelets and Attenuation

description: &lt;p&gt;The site archives a number of codes written in Matlab to calculate the DAS strain and strain rate responses accounting for a straight, perfectly coupled fiber.  The codes consider separately P and SV wave responses as functions of the material velocity, the DAS gage length, the input wavelet and the plane wave angle of incidence.  The effects of material attenuation on the DAS response over a single gage is included only for the case of a P-wave propagating parallel to the fiber.   The complete set of codes as well as associated convenient scripts to run them is contained in the zipped file DAS_Matlab.zip.  The document READ ME.docx contains a detailed listing of the included programs as well as information on operating them.&lt;/p&gt;

&lt;p&gt;These programs are associated with the manuscript &#39;Tutorial: Distributed Acoustic Sensing (DAS) Wavelets: Effects of Phase, Attenuation, and Geometry&#39; submitted to Geophysics,  September 2023.&lt;/p&gt;

&lt;p&gt;Additional numerical codes associated with this paper may be found in the related repository PURR repository &#39;geophone to DAS converter&#39; ( &lt;strong&gt;Zhang, O.; Schmitt, &lt;/strong&gt;D. R. (2023). &lt;em&gt;A Python tool converting geophone to DAS response &lt;/em&gt;[software]. Purdue University Research Repository. doi:10.4231/ZD3Q-RV18, 2023)&lt;/p&gt;
description: Archive contains Matlab based codes to calculate DAS responses to propagating plane elastic waves.
DOI: 10.4231/esd1-kw13
title: Data for: Simulations and theory of power spectral density functions for time dependent and anharmonic Langevin oscillators

description: &lt;p&gt;This data is for a paper where simulations and theory are presented for the power spectral density functions (PSDs) of particles in time dependent and anharmonic potentials including the effects of a thermal environment leading to damping and fluctuating forces. We investigate three one dimensional perturbations to the harmonic oscillator of which two are time dependent changes in the natural frequency of the oscillator, while the other is a time independent extension of the quadratic potential to include a quartic term. We investigate the effect of these perturbations on two PSDs of the motion that are used in experiments on trapped nano-oscillators. We also derive and numerically test the PSDs for the motion of a spherical nanoparticle in a Paul trap. We found that the simple harmonic Langevin oscillator&rsquo;s PSDs are good approximations for the x-and y-coordinates&rsquo; PSDs for small values of the parameter q of the Mathieu equation, but the difference can be more than a factor of two as &rsquo;q&rsquo; increases. We also numerically showed that the presence of a permanent electric dipole on the nanosphere can significantly affect the PSDs in the x-and y-coordinates.&lt;/p&gt;
description: Data used in the figures of a paper to be published in Phys. Rev. E 108, 3 (2023) with short information in FILE_INFO.txt. Also contains .eps files and gnuplot routines.