Find research datasets worth reusing

opencc-by-4.0Oct 2024View details →

Perspectives of Persons with Physical Impairments: Issues of Accessibility of Transportation Systems for Effective Inclusion in the English-Speaking Regions of Cameroon

The paper investigated the adaptation for accessibility of transportation systems for effective inclusion of persons with physical disabilities in the English- speaking regions of Cameroon. Specifically, the article seeks to find out the impact of priority seating arrangement, the impact of audio-visual tactile information service, the impact of accessible parking and the provision of emergency evacuation plans on effective inclusion of persons with physical disabilities in the English-Speaking   Regions of Cameroon. Literature was reviewed conceptually, theoretically and empirically. Using exploratory research design, the study sample 12 persons with physical disabilities, using an interview guide and observational check-list. Therefore, the study made use of qualitative data. The qualitative data was analyzed thematically, using themes and sample quotations. The findings showed that the current priority seating system in public transportation within the participants' community fails to provide an inclusive and accessible experience for individuals with physical, visual, and hearing impairments. Also, the findings from this research indicate that the lack of accessible and inclusive audio-visual tactile information in the public transportation systems of the English-Speaking Regions of Cameroon presents significant barriers to the full and equal participation of persons with physical disabilities. Moreover, the results of this study show that accessible parking impact effective inclusion of persons with physical disabilities in the English-Speaking Regions of Cameroon. Finally, the findings indicate a concerning lack of adequate emergency evacuation plans and procedures that consider the needs and safety of individuals with physical disabilities in the transportation infrastructure of the region. It was therefore, concluded that the adaptation for accessibility of transportation systems had a high effect on the inclusion of persons with physical disabilities in the English- speaking regions of Cameroon. Based on this, it is suggested thattransport providers should enhance the Priority Seating System; implement clear and visible markings for priority seating areas in public transportation vehicles, ensure that priority seating is designed with the specific needs of individuals with physical, visual, and hearing impairments in mind, such as providing adjustable and ergonomic seating options and develop and enforce policies that mandate the proper use of priority seating and promote a culture of respect and awareness among passengers.

opencc-by-4.0Oct 2024View details →

Physical features for small sample of data (1000 events per class)

These repository contains physical features extracted from four classes -  1) Earthquake, 2) Explosions, 3) Noise, 4) Surface events.  Each waveform is of 40s (P-10, P+30).  tapered 10% bandpass filtered (0.5 - 15 Hz) normalized by max.

opencc-by-4.0Jun 2021View details →

Generalizable cone beam CT esophagus segmentation using physics-based data augmentation

This upload contains open source AAPM thoracic auto-segmentation data (http://aapmchallenges.cloudapp.net/competitions/3) augmented with physics-based data augmentation technique introduced in this paper:https://iopscience.iop.org/article/10.1088/1361-6560/abe2eb . The original data contained thoracic planning CT along with organs-at-risk segmentation masks for Esophagus, heart, lungs and spinal cord. The physics-based augmentation pipeline was used to convert planning CT images to pseudoCBCT (psCBCT) images which are routinely used in weekly radiotherapy treatment sessions for cancer patients. Further geometric data augmentations are also applied to convert one planning CT/OAR dataset into 23 perfectly paired CT/psCBCT/OAR pairs. This dataset has been used to train deep learning models for organs-at-risk segmentation from psCBCT images and multitask simultaneous CBCT to CT translation and segmentation tasks.

opencc-by-4.0May 2020View details →

Regional Patterns and Physical Controls of Streamflow Generation across the Conterminous United States

This dataset contains information of 432 study catchments used in the WRR paper "Regional Patterns and Physical Controls of Streamflow Generation across the Conterminous United States", including shapefile, hydrological signatures, catchment descriptors, and catchment classification (the primary class of each catchment).

opencc-by-4.0May 2021View details →

Physical phenotype of blood cells is altered in COVID-19

Clinical syndrome coronavirus disease 2019 (COVID-19) induced by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is characterized by rapid spreading and high mortality worldwide. While the pathology is not yet fully understood, hyper-inflammatory response and coagulation disorders leading to congestions of microvessels are considered to be key drivers of the still increasing death toll. Until now, physical changes of blood cells have not been considered to play a role in COVID-19 related vascular occlusion and organ damage. Here we report an evaluation of multiple physical parameters including the mechanical features of five frequent blood cell types, namely erythrocytes, lymphocytes, monocytes, neutrophils, and eosinophils. More than 4 million blood cells of 17 COVID-19 patients at different levels of severity, 24 volunteers free from infectious or inflammatory diseases, and 14 recovered COVID-19 patients were analyzed. We found significant changes in lymphocyte stiffness, monocyte size, neutrophil size and deformability, and heterogeneity of erythrocyte deformation and size. While some of these changes recovered to normal values after hospitalization, others persisted for months after hospital discharge, evidencing the long-term imprint of COVID-19 on the body.

opencc-by-4.0Jul 2021View details →

Physical Insights from Frumkin Isotherm Applied to Electrolyte Gated Organic Transistor as Protein Biosensors

The uploaded data include the transfer curves at every IL-6 concentration and for control experiments (TNFalpha and IL-1beta). Electrical measurements were acquired in 50 mM PBS, pH 7.4, containing a constant concentration of 0.1 mg/mL BSA and 0.05% Tween 20 under static conditions. Anti-IL-6 antibodies were immobilized on the gate electrode through EDC/NHS coupling onto mixed mercaptoundecanoic acid:6-mercaptohexanol (1:3) SAM.

opencc-by-4.0Aug 2021View details →

Physical, psychological, academic, and sexual abuse of university students in five Latin American countries: characteristics and association with student satisfaction

Background: A high rate of student abuse has been reported in various studies. This study aimed to characterize the abuse of university students in five Latin American countries and its association with student satisfaction. Methods: An analytical transversal study was conducted, in which 2,141 undergraduate students from Paraguay, Ecuador, Colombia, Venezuela, and Panama were surveyed. A validated questionnaire was applied to evaluate four types of abuse (Cronbach's Alpha: 0.90): psychological, physical, academic, and sexual. In addition, students’ perception of satisfaction of four items in the university environment (Cronbach's Alpha: 0.85) was also analyzed. Results: It was found that the older students were, the more dissatisfied they were with “logistics” (aPR: 1.02; 95% CI: 1.00-1.04; p-value; 0.014) and the top-third segment of those who perceived “sexual abuse” were more dissatisfied with the teaching provided by their universities (aPR: 1.23; 95% CI: 1.00-1.52; p-value: 0.048). Moreover, those who were most dissatisfied with the agreements were part of the top-third segment of those who perceived sexual abuse (aPR: 1.16; 95% CI: 1.03-1.32; p-value: 0.016) and those in the country of Panama were less dissatisfied with “agreements” (RPa: 0.70; 95% CI: 0.66-0.073; p-value<0.001). The countries of Colombia (aPR: 0.08; IC95%: 0.01-0.59; p-value: 0.014) and Panama (aPR: 0.57; 95% CI: 0.52-0.64; p-value<0.001) were less dissatisfied with investigation programs. Conclusions: The perception of ‘sexual abuse’ was related with dissatisfaction with teaching and agreements.

opencc-by-4.0Aug 2021View details →

Dataset for Journal of Applied Physics 130, 124502 (2021) - Force microscopy cantilevers locally heated in a fluid: temperature fields and effects on the dynamics

"Fig7.fig": Matlab figures including all the measured and treated data used to plot figure 7 of the article. "Fig7_data.mat ": Matlab files containing the data to plot figure 7 of the article. "Fig7_plot.m ": Matlab scripts to plot the data of the Matlab files "Fig7_data.mat" "Fig10.fig": Matlab figures including all the measured and treated data used to plot figure 10 of the article. "Fig13.fig": Matlab figures including all the measured and treated data used to plot figure 13 (in the appendix) of the article.

Online Package for the manuscript "Continuous Integration and Delivery for Cyber-Physical systems: A Grounded-Theory"

This package contains the material of the (grounded theory) study related to the paper "Continuous Integration and Delivery for Cyber-Physical systems: A Grounded-Theory" The content of the various files and directories is detailed in the following. InterviewStructure.pdf: complete interview structure (the paper reports an overview in Table 1) open_coding/: this directory contains details from the open coding procedure. In particular:  - AllCodesUsedWhileCodingAndMapping.csv contains the list of all codes generated during the open coding, with a symbol near each one (first column) then used to compute the inter-rater agreement  - first_round.csv, second_round.csv, third_round.csv, fourth_round.csv: files used to compute the inter_rater agreement CodesContributingToMindMap.csv: final set of codes, that contributed to the taxonomy (see below) FinalCodingTraceability.csv: this file describes how the final set of codes is traced onto the ten interviews. Note that, at this stage, the transcripts have been redacted for confidentiality purposes. MindMap_Complete.pdf: complete taxonomy of codes, in the form of a mind map. The one reported in the paper (Figure 2) cuts leaves, unless (as for benefits, for example) they are necessary to properly describe and understand the category. Also, note that the complete mind map separates the benefits into "actual" and "expected" (based on what was collected from the interviews) whereas the summary mindmap shown in the paper (Figure 2) does not make this distinction. 6C_Diagrams/ : This directory contains the detailed 6C diagrams (i.e., each box related to a "C" contains the list of codes pertaining to it) for the three dimensions investigated in the paper and addressed in RQ1, RQ2, and RQ3.

opencc-by-4.0Jun 2021View details →

(re)Use Indications of High Energy Physics related Research Data and Software in Zenodo

This dataset contains High Energy Physics related research data and software (re)use indications (formal citations, informal mentions) in scholarly works. All research data and software resources were identified and extracted from Zenodo. The (re)use indications were identified by a mix of approaches: use of citation discovery services and multiple search approaches in Google Scholar. All identified research data and software (re)use indications were classified according to their purpose, location, and elements. The data was collected in 2018 for a PhD thesis on research data and software (re)use indications in scholarly works.

Geography of Soviet and Post-Soviet Physics - Supplementary Table

This is a dataset containing detailed information on paper counts in JETP and JETP Letters Physics Journals in regard to geography of reprint authors on the country and city level for 1975-2015.

Dataset: Recruitment of pioneer trees with physically dormant seeds under climate change conditions: the case of Vachellia pennatula (Fabaceae) in semiarid environments of Mexico

This repository contains the files associated with the following article: Sandoval-Martínez J, JA Flores-Cano and EI Badano. Recruitment of pioneer trees with physically dormant seeds under climate change conditions: the case of Vachellia pennatula (Fabaceae) in semiarid environments of Mexico. Journal of Plant Research, 135, pp. 453-463. <a href="https://doi.org/10.1007/s10265-022-01383-y">https://doi.org/10.1007/s10265-022-01383-y</a> The first Microsoft Excel file contains six sheets with the microclimatic data (photosynthetic photon flux density, air temperature, relative humidity, soil temperature, rainfall and soil moisture) measured at controls under the current climate and climate change simulation plots located at each experimental site (Rio Bagres and Cañada Grande). The second Microsoft Excel file contains a single sheet with the data used to estimate the seedling emergence and survival rates from scarified and unscarified seeds of Vachellia pennatula in controls and climate change simulation plots at each experimental site (Rio Bagres and Cañada Grande).

opencc-zeroSep 2021View details →

An interpolated biogeographic framework for tropical Africa using plant species distributions and the physical environment

Aim: Existing phytogeographic frameworks for tropical Africa lack either spatial completeness, unit definitions smaller than the regional scale, or a quantitative approach. We investigate whether physical environmental variables can be used to interpolate floristically defined vegetation units, presenting an interpolated, hierarchical, quantitative phytogeographic framework for tropical Africa, which is compared to previously defined regions. Location: Tropical mainland Africa 24°N to 24°S. Taxon: 31,046 vascular plant species and infraspecific taxa. Methods: We calculate a betasim dissimilarity matrix from a comprehensive whole-flora database of plant species distributions. We investigate environmental correlates of floristic turnover with local non-metric multidimensional scaling. We derive a hierarchical biogeographic framework by clustering the dissimilarity matrix. The framework is modelled using a classification decision tree method and 12 physical environmental variables to interpolate and downscale the framework across the study region. Results: Floristic turnover is related strongly to water availability and temperature, with smaller contributions from land cover, topographic ruggedness and lithology. Region can be predicted with 90% accuracy by the model. We define 19 regions and 99 districts. We find a novel arrangement of the arid regions. Regional subdivision within the savanna biome is supported with minor variation to borders. Within the forests of west and central Africa, our whole-flora gridded regionalisation supports the divisions identified by a previous analysis of trees only. Main conclusions: Physical environmental variables can be used to predict floristically defined vegetation units with very high accuracy, and the approach could be pursued for other inc ompletely sampled taxa and areas outside of tropical Africa. Geographic coherence is higher than in previous quantitative phytoregional definitions. For most tropical African vascular plant species, we provide predictions of which species will occur within each mapped district and region of tropical Africa. The framework should be useful for future studies in ecology, evolution and conservation.

Variable stellar outflows as a probe to magnetic fields and other physical characteristics of hot, massive stars

It is now clear that the radiatively driven outflows from hot, massive stars are far more complex than the simple homogeneous and spherically symmetric flows originally envisioned. With the advent of high resolution, high cadence observations of various types in the past decades, a myriad of phenomena have been uncovered that can help us reach a better understanding of the parameters and characteristics of the stars from which these winds originate. This in turn has important ramifications on the various phases of evolution of the star and on the way it will ultimately end its life. In this talk, I will review the many observational signatures of variable stellar outflows of massive stars and describe how they relate to physical characteristics of the underlying star, with a particular emphasis on magnetic fields.

opencc-by-4.0Oct 2021View details →

Physical Interaction Detection

This folder contains data collected from a robot physically interacting with a human or the environment. The data has been used for the development, training, and validation of methods for detecting discrete changes in either human intent or environmental contact.   Each folder contains a description of the test conditions under which the data was collected, and an explanation of the data format.

opencc-zeroNov 2022View details →

The giant clam photosymbiosis is a physically optimized photoconversion system for the most intense sunlight on Earth

Giant clams are photosymbiotic with unicellular algae ("zooxanthellae") organized in the clam's mantle tissue. This tissue has an especially low albedo for a photosynthetic system, generally less than 10\% at all visible wavelengths. This efficient absorbance of light occurs in the ecological context of the high solar irradiances in intertidal habitats near the equator. At these light levels, photosynthetic systems typically adapt to absorb less light in order to prevent radiative damage to chloroplasts. Giant clams are therefore unusual. If the giant clam photosymbiosis proves to be simultaneously efficient at absorption and at phototransduction at these irradiances, they are potentially remarkably productive and an important source of bioinspiration. We showed previously that the clams organize algae into vertical pillars in the mantle tissue. The clams' iridocytes, or optically structured skin cells on the surface of the tissue, then function to evenly distribute incoming solar irradiance along the vertical faces of the pillars. The result is that zooxanthellae in the system absorb solar power at lower rates than that of incoming solar flux. The overall energetic performance of this phtooconversion scheme has, however, been difficult to characterize given the complex three-dimensional structure and the fact that it is coupled to a much more voluminous, respiring animal. Here we use a combination of photochemical characterization and new quantitative modeling of data from the literature to estimate the photochemical efficiency as a function of incoming irradiance of the initial electron-transfer events. Our approach is to consider the clam mantle tissue in isolation as a meta-material for photoconversion. To do this, we developed a method to directly measure the system's photochemical efficiency with spatial resolution of 10's of microns using optical microprobes threaded through the tissue. These experimental efficiency data then serve as ground-truthing for a subsequent reanalysis of photosynthesis-irradiance curves of clams taken from the literature. For this quantitative re-analysis, we incorporated the clam system's quantum efficiency as a function of irradiance per cell into a Monte Carlo model of radiative transfer among cells to find the tissue's area-specific oxygen evolution apart from any sinks. We found that cells located within the dense clam system had fluorescence transients (i.e., Kautsky curves), a direct measure of the efficiency of PS II) that were very slow and of low intensity, particularly for a dense system, consistent with photochemical efficiencies generally greater than 50\% and often greater than 90\%. When incorporated into a larger computational model, we found that mature Tridacnid clams can efficiently perform photoconversion of light energy into chemical energy at light intensities many times more intense than the maximum time-averaged environmental radiance, or even the solar constant. The intensities to which the clam is adapted, however, can be found in strong wave-lensed pulses of irradiance that are characteristic of the clams' habitats. This surprising result makes sense if the system has evolved to both avoid damage from and utilize the power in the intense pulses of light that result from wave-lensing. Our model predicts that by evolving to compensate for the intense pulses of solar energy produced by wave-lensing, the clam system can perform photochemical conversion of radiation at intensities many times greater than the solar constant at around 90\% quantum efficiency. This result in turn suggests a strategy for organic, engineered materials performing photoconversion under solar concentration.

opencc-zeroNov 2022View details →

Data from: Low species turnover of upland Amazonian birds in the absence of physical barriers

Aim: One of the oldest and most powerful ways for ecologists to explain distinct biological communities is to invoke underlying environmental differences. But in hyper-diverse systems, which often display high species richness and low species abundance, these sorts of community comparisons are especially challenging. The classic view for Amazonian birds posits that riverine barriers and habitat specialization determine local and regional community composition. We test the tacit, complementary assumption that similar bird communities should therefore permeate uniform habitat between major rivers, regardless of distance. Location: Upland (terra firme) rainforests of central Amazonia. Results: In all, we detected 244 forest-dependent birds, with an average of 190 species (78%) per plot. Species turnover was negligible, no unique indicator species were found among plot pairs, and all documented species were already known from a complete inventory at one of the three sites. Main conclusions: Our study corroborates the classic biogeographical pattern and suggests that turnover contributes little to regional avian diversity within upland forests. Using a grain size of 100 ha, this implies that upland birds perceive the environment as uniform, at least over distances of ~60 km. Therefore, to maximize both local species richness and population persistence, our findings support the conservation of very large tracts of upland rainforest. Our analyses also revealed that the avifauna at Reserva Ducke, encroached by urban sprawl from the city of Manaus, shows the hallmarks of a disturbed community, with fewer vulnerable insectivores. This defaunation signals that even an enormous preserve (10 × 10 km) in lowland Amazonia is not insulated from anthropogenic degradation within the surrounding landscape.

opencc-by-4.0Apr 2021View details →

Data presented in "An ultracold molecular beam for testing fundamental physics"

Data presented in "An ultracold molecular beam for testing fundamental physics". The original paper can be found at https://doi.org/10.1088/2058-9565/ac107e. This is the data underlying the simulations and the experimental results.

opencc-zeroNov 2022View details →

Long-term spatially-replicated data show no physical cost to a benefactor species in a facilitative plant-plant interaction

Facilitation is an interaction where one species (the benefactor) positively impacts another (the beneficiary). However, the reciprocal effects of beneficiaries on their benefactors are typically only documented using short-term datasets. We use Azorella selago, a cushion plant species and benefactor, and a co-occurring grass species, Agrostis magellanica, on sub-Antarctic Marion Island, comparing cushion plants and the grasses growing on them over a 13-year period using a correlative approach. We additionally compare the feedback effect of A. magellanica on A. selago identified using our long-term dataset with data collected from a single time period. We hypothesized that A. selago size and vitality would be negatively affected by A. magellanica cover and that the effect of A. magellanica on A. selago would become more negative with increasing beneficiary cover and abiotic-severity, due to, e.g., more intense competition for resources. We additionally hypothesized that A. magellanica cover would increase more on cushion plants with greater dead stem cover, since dead stems do not inhibit grass colonization or growth. The relationship between A. magellanica cover and A. selago size and vitality was not significant in the long-term dataset, and the feedback effect of A. magellanica on A. selago did not vary significantly with altitude or aspect; however, data from a single time period did not consistently identify this same lack of correlation. Moreover, A. selago dead stem cover was not significantly related to an increase in A. magellanica cover over the long term; however, we observed contrasting results from short-term datasets. Long-term datasets may, therefore, be more robust (and practical) for assessing beneficiary feedback effects than conventional approaches, particularly when benefactors are slow-growing. For the first time using a long-term dataset, we show a lack of physical cost to a benefactor species in a facilitative interaction, in contrast to the majority of short-term studies.