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1,176 results for “Acquisition”
Tomographic data acquired by a half-acquisition scanning technique
<p>Tomographic data acquired by a half-acquisition scan (360-degree scanning with offset center-of-rotation) was used to demonstrate data processing methods in the paper:</p> <p>"Data processing methods and data acquisition for samples larger than the field of view in parallel-beam tomography"<br> Nghia T. Vo, Robert C. Atwood, M. Drakopoulos, and Thomas Connolley, <a href="https://doi.org/10.1364/OE.418448">https://doi.org/10.1364/OE.418448</a></p> <p> </p> <p>To extract data, you firstly collect the files together and run "zip -F half_acquisition_scan_splitted.zip<br> --out data.zip" to recreate dataset. Then you can unzip by running "unzip data.zip"</p> <p> </p> <p> </p>
Data from: Nitrogen acquisition of Central European herbaceous plants that differ in their global naturalization success
<p>It is frequently assumed that species capable of fast nitrogen (N) acquisition under different N-availability conditions should have a higher establishment success after their introduction into new regions. However, few experimental studies have explicitly tested this. Our multispecies experiment tested whether global naturalization success of plant species native to Central Europe is related to a high N-acquisition ability.</p> <p>We selected 41 common herbaceous species native to Germany that have all become naturalized, and thus been introduced, elsewhere. Twenty-two of these species are widely naturalized and 19 are less widely naturalized. We grew the 41 grassland species, sampled in Germany, under low and high N conditions in a greenhouse experiment, and assessed their N-acquisition abilities.</p> <p>Although the widely naturalized species grew faster on average, they had a significantly lower N-uptake rate than the less widely naturalized ones. The widely naturalized species, however, had a marginally significantly higher root-mass fraction. Despite these differences, the total plant N-content did on average not differ between the two groups of species. However, N addition tended to increase the total plant N-content more for the widely naturalized species than for the less widely naturalized species. Nitrogen addition also increased biomass production and N-uptake rate, and decreased the root-mass fraction of plants, but these responses did not differ between widely and less widely naturalized species.</p> <p>We conclude that although fast-growing species tend to have a higher global naturalization success than slow-growing species, the naturalization success of plants is not necessarily related to a high N-acquisition ability.</p>
Hyperspectral imager acquisitions from SMART Soils Test Bed, 2022-04-18
<p>Hyperpsectral imager data retrieved over the Lawrence Berkeley National Lab SMART Soils Test Bed on 2022-04-18 at three times (11:20, 12:34, 13:44). Radiance data (mW cm−2 μm−1 sr−1) subset to bands of interest over the Headwall Hyperspec Imager's 680-800nm range (680-682, 757-652, 769-772, and 778-780 nm) to retrieve RED, NIR, NDVI and SIF while minimizing file size. Data associated with Ruehr et al. 2023, 'Quantifying seasonal and diurnal cycles of solar-induced fluorescence with a novel hyperspectral imager,' submitted to Geophysical Research Letters in November 2023. Code for processing these data and descriptions of the files are available at https://github.com/sruehr/SIFretrieval.</p>
Feral pig (Sus scrofa) disturbance facilitates establishment of resource-acquisitive species in Hawaiian forest understories
<p>In this study, we quantify the effects of leaf traits and dispersal attributes on species responses to pig soil disturbance at two spatial scales – 0.5 m<sup>2</sup> patches embedded along 20 m transects within sites – across a gradient of pig density in a Hawaiian montane wet forest using Bayesian mixed models. </p> <p>Native and non-native species demonstrated divergent responses, with increasing presence and abundance of non-native species in the understory as soil disturbance within patches and sites increased. Dominant patterns in measured traits tracked the leaf economic spectrum (LES), with non-native species tending toward resource-acquisitive traits. Species with resource-acquisitive traits, regardless of identity, were favored with disturbance and responded positively to light availability in disturbed sites. Models showed species primarily dispersed by wind were more prevalent in disturbed patches and sites than those dispersed by endozoochory, while seed mass had no effect.</p>
lga BGC Domain alignment files for "Repeated horizontal acquisition of lagriamide-producing symbionts in Lagriinae beetles"
<p>Domains from all lga BGCs recovered from beetle metagenomes were aligned to identified conserved regions and determine if domains were potentially inactivated via mutation of deletion of conserved regions or residues. </p>
Fig. 2 in The Acquisition of Plastids/Phototrophy in Heterotrophic Dinoflagellates
Fig. 2. Variation in degree of reduction of the retained endosymbiont or organelles in dinoflagellates with acquired phototrophy. Black thick lines: plasma membrane; Blue circles: a single membrane of unknown origin that separates the cryptophyte cytoplasm from the dinoflagellate cytoplasm; Red circles: digestive vacuole (= food vacuole). A – green Noctiluca scintillans harboring an intact cell of the prasinophyte Pedinomonas noctilucae; B–D – the three cases where the mechanism for acquisition of organelles by dinoflagellates is known; B – Amphidinium poecilochroum. The ingested cryptophyte organelles are encircled by a single membrane of unknown origin, and then are actively transferred to and digested in a digestive vacuole in the order of the numbers indicated; C – Gymnodinium acidotum (= G. aeruginosum). In the dinoflagellate, the cryptophyte's Golgi body (indicated in grey color) was degenerated. The cryptophyte nucleus and nucleomorph (indicated by dotted lines) were present in some cells, but not in other cells. In the dinoflagellate, a peduncle has been identified (Wilcox and Wedemayer 1984, Farmer and Roberts 1990), but it is not clear whether the peduncle feeding is actually involved in the ingestion process (Fields and Rhodes 1991). As in A. poecilochroum, the ingested cryptophyte organelles are encircled by a single membrane; D – Dinophysis spp. The arrow means that the plastids escape from the food vacuole and move to the cytoplasm of the dinoflagellate; E–G – cases where the mechanism for acquisition of cryptophyte organelles remains unknown. The plastids and other organelles may originate from a series of events leading to acquisition and subsequent degeneration of a whole-cell endosymbiont (i.e., an intact cryptophyte symbiont – E, F or G), or may be acquired as organelles via predation (i.e., kleptoplastidy; an ingested cryptophyte partially digested to give states shown in E, F or G); E – Amphidinium latum and Gymnodinium myriopyrenoides; F – Amylax triacantha. According to Koike and Takishita (2008), a single Amylax cell had 14 cryptophyte vestiges, of which only one was found to contain a cryptophyte nucleus (indicated by dotted line). The presence of a Golgi body and exectosome was not confirmed (indicated by question marks); G – Amphidinium wigrense retaining only plastids of cryptophyte origin.
Fig. 1 in The Acquisition of Plastids/Phototrophy in Heterotrophic Dinoflagellates
Fig. 1. Light micrographs of some dinoflagellates with acquired phototrophy. A – Amphisolenia bidentata (micrograph provided by Niels Daugbjerg); B – green Noctiluca scintillans (micrograph provided by Ken Furuya); C – Amphidinium poecilochroum; D – Gymnodinium eucyaneum (micrograph provided by Guoxiang Liu); E – Cryptoperidiniopsis sp.; F – Gymnodinium myriopyrenoides; G – undescribed Antarctic dinoflagellate (micrograph provided by C. Grier Sellers); H – Dinophysis caudata; I – Amylax triacantha; J – Dinophysis acuminata; K – Dinophysis fortii.
Code to generate figures 3 and 4 of: "A comprehensive LFQ benchmark dataset to validate data analysis pipelines on modern day acquisition strategies in proteomics."
<p>Code to generate figures 3 and 4 of the manuscript titled "A comprehensive LFQ benchmark dataset to validate data analysis pipelines on modern day acquisition strategies in proteomics."</p> <p> </p>
A corpus-based study of the acquisition of the English progressive by L1 Chinese learners: From prototypical activities to marked statives
<p>This article investigates how EFL learners’ progressive markings are influenced by the lexical aspect of verbs, modality (spoken vs. written), and proficiency levels, focusing on the controversial issue of stative verbs in progressives in L2 acquisition. Spoken (SECCL) and written (WECCL) corpus data from two proficiency levels of Chinese EFL learners and comparison data from native English speakers (COCA) were analyzed. The results suggest that in both learner and native data the progressive -<em>ing</em> is strongly associated with activity verbs, stative verbs being least likely to be inflected with the progressive<em>,</em> as predicted by the Aspect Hypothesis (Andersen and Shirai 1994, 1996). However, inconsistently with the Aspect Hypothesis, this association strengthens with higher proficiency levels. Learners’ use of stative verbs in the progressive and the overextended use of stative progressives was also found to be related to spoken vs. written mode of production and proficiency levels, with learners retreating from overextension as their proficiency increases. A usage-based account of the findings is proposed.</p>
Source data to publication "Benchmarking of Analysis Strategies for Data-Independent Acquisition Proteomics Using a Large-Scale Dataset Comprising Inter-Patient Heterogeneity"
<p>Source data to publication "Benchmarking of Analysis Strategies for Data-Independent Acquisition Proteomics Using a Large-Scale Dataset Comprising Inter-Patient Heterogeneity".</p> <p>Data and further information at GitHub repository https://github.com/kreutz-lab/dia-benchmarking (DOI: 10.5281/zenodo.6371925)</p>
Using a Hybrid Kano-Importance Questionnaire in the Acquisition of Data Related to Students' Expectations from Online Educational Platforms
<p>This dataset contains the data collected for the assessment of the quality attributes of a new online educational platform. The questionnaire used for data collection the Kano methodology and was designed as a hybrid Kano-importance questionnaire. The purpose of this data collection consists of the analysis of the students’ expectations regarding the features proposed for a new online educational platform. This analysis facilitates the identification of student needs during times of COVID-19 pandemic and post-pandemic times, while a transition to an online educational system was used throughout the world. </p>
Neonate personality affects early-life resource acquisition in a large social mammal
<p>This file contains the raw data files and R-scripts used for producing the final data sets analyzed in the paper: "Neonate personality affects early-life resource acquisition in a large social mammal". A full and detailed description of the methods can be found in the manuscript, or at request from the author (BA).</p> <p> The R-scripts can be used to follow all the steps taken in producing the final data sets. The findings in the paper can be then reproduced by using the code provided in the supplementary materials (of the paper). </p> <p>The file contains data taken from >150 newborn fallow deer fawns (<em>Dama dama</em>), in two different cohorts. Data were taken at capture and recapture of these fawns, during their first weeks of life. During this period, fallow deer fawns adopt a hiding-strategy where they hide in the vegatation from potential predators. Furthermore, it contains time budget data taken at summer, when fawns were 1-2 months old, and at autumn, when fawns were 3-6 months old. The final file is a datafile that contains data on the days that fawns were spotted in a group of deer for the first time, after their hider-phase.</p> <p>We have provided a README.docx file, which contains additional descriptions of the raw data set and the variables it includes.</p>
Raw data for "Fluorescence crosstalk reduction by modulated excitation-synchronous acquisition for multispectral analysis in high-throughput droplet microfluidics."
<p>Raw data to quantify the crosstalk reduction and signal resolution improvement by MESA used in Figure 3 and 4.</p> <p><br> </p>
Figure 2. Screen capture of the current application-INTELLIGENT AGENT FOR ACQUISITION OF THE MOTHER TONGUE VOCABULARY
<p>From this screen capture (figure 2), you can observe that, for example, the noun car (masina)<br> is in a great correspondence with the correct word car(masina), and in the same correspondence<br> with the incorrect word small (mic). But this is due to the fact that the system worked only with few<br> examples. After a training with much more examples, the system will increase the correspondence<br> between the concept/object car and the word car, and the correspondence between the object car and<br> the word little will remain smallest.</p>
Figure 1. Associations between objects and words-Intelligent Agent for Acquisition of the Mother Tongue Vocabulary
<p>So, the learning process is very complex, and it is a probabilistic one. Thus, a second<br> example is required, and even more than that. Normally, the mother speaks naturally to her child,<br> she speaks with love and affection, she doesn’t “judge” or “program” what to say to her child.<br> Therefore, another day she will tell her child, for example, “My darling son, let’s drink the milk<br> from the cup.”</p>
Dataset: Atlantic Coastal Acquisition Corp. II (ACABW) Stock Performance
This dataset provides historical stock market performance data for specific companies. It enables users to analyze and understand the past trends and fluctuations in stock prices over time. This information can be utilized for various purposes such as investment analysis, financial research, and market trend forecasting.
Dataset: Armada Acquisition Corp. I (AACIW) Stock Performance
This dataset provides historical stock market performance data for specific companies. It enables users to analyze and understand the past trends and fluctuations in stock prices over time. This information can be utilized for various purposes such as investment analysis, financial research, and market trend forecasting.
Dataset: Armada Acquisition Corp. I (AACIU) Stock Performance
This dataset provides historical stock market performance data for specific companies. It enables users to analyze and understand the past trends and fluctuations in stock prices over time. This information can be utilized for various purposes such as investment analysis, financial research, and market trend forecasting.
Dataset: Acri Capital Acquisition Corporation (ACACW) Stock Performance
This dataset provides historical stock market performance data for specific companies. It enables users to analyze and understand the past trends and fluctuations in stock prices over time. This information can be utilized for various purposes such as investment analysis, financial research, and market trend forecasting.
Dataset: Armada Acquisition Corp. I (AACI) Stock Performance
This dataset provides historical stock market performance data for specific companies. It enables users to analyze and understand the past trends and fluctuations in stock prices over time. This information can be utilized for various purposes such as investment analysis, financial research, and market trend forecasting.
ScienceDex guides
Understand access before you commit
These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.