1,286 research outputs found
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Linguistic Priming and Learning Adjacent and Non-Adjacent Dependencies in Serial Reaction Time Tasks
Although syntactic priming is well studied and
commonly assumed to involve implicit learning, the
mechanisms behind this phenomenon are still under
debate. We tested whether implicit learning of adjacent
and non-adjacent sequences occurs in a non-linguistic,
finger sequence task (Serial Reaction Time task), and if
so, whether these implicitly-learned dependencies can
cause syntactic priming in the linguistic domain. We
followed the logic that exposure to statistical patterns in
the SRT task may influence language users’ relative
clause (RC) attachment biases, and trained participants
on SRT sequences with adjacent or non-adjacent
dependencies. Participants then wrote completions to
relative clause fragments in a situation where they
could opt for adjacent or non-adjacent linguistic
structures. Participants successfully learned the adjacent
and non-adjacent dependency implicitly during the SRT
task, but, strikingly, their RC continuations did not
exhibit priming effects. Implications for theories of
syntactic priming and its relations to implicit learning
are discussed
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Learning Non-Adjacent Dependencies in Continuous Presentation of an Artificial Language
Many grammatical dependencies in natural language
involve elements that are not adjacent, such as between
the subject and verb in the child always runs. To date,
most experiments showing evidence of learning non-
adjacent dependencies have used artificial languages in
which the to-be-learned dependencies are presented in
isolation by presenting the minimal sequences that
contain the dependent elements. However,
dependencies in natural language are not typically
isolated in this way. In this study we exposed learners
to non-adjacent dependencies in long sequences of
words. We accelerated the speed of presentation and
learners showed evidence for learning of non-adjacent
dependencies. The previous pause-based positional
mechanisms for learning of non-adjacent dependency
are challenged
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Grammatical Bracketing Determines Learning of Non-adjacent Dependencies
Grammatical dependencies often involve elements that
are not adjacent. However, most experiments in which
non-adjacent dependencies are learned bracketed the
dependent material with pauses, which is not how
dependencies appear in natural language. Here we
report successful learning of embedded NAD without
pause bracketing. Instead, we induce learners to
compute structure in an artificial language by entraining
them through processing English sentences. We also
found that learning becomes difficult when grammatical
entrainment causes learners to compute boundaries that
are misaligned with NAD structures. In sum, we
demonstrated that grammatical entrainment can induce
boundaries that can carry over to reveal structures in
novel language materials, and this effect can be used to
induce learning of non-adjacent dependencies
Impact of the Chlorination of Lithium Argyrodites on the Electrolyte/Cathode Interface in Solid‐State Batteries
Lithium argyrodite-type electrolytes are regarded as promising electrolytes due to their high ionic conductivity and good processability. Chemical modifications to increase ionic conductivity have already been demonstrated, but the influence of these modifications on interfacial stability remains so far unknown. In this work, we study Li6PS5Cl and Li5.5PS4.5Cl1.5 to investigate the influence of halogenation on the electrochemical decomposition of the solid electrolyte and the chemical degradation mechanism at the cathode interface in depth. Electrochemical measurements, gas analysis and time-of-flight secondary ion mass spectrometry indicate that the Li5.5PS4.5Cl1.5 shows pronounced electrochemical decomposition at lower potentials. The chemical reaction at higher voltages leads to more gaseous degradation products, but a lower fraction of solid oxygenated phosphorous and sulfur species. This in turn leads to a decreased interfacial resistance and thus a higher cell performance
DRAC: Diabetic Retinopathy Analysis Challenge with Ultra-Wide Optical Coherence Tomography Angiography Images
Computer-assisted automatic analysis of diabetic retinopathy (DR) is of great
importance in reducing the risks of vision loss and even blindness. Ultra-wide
optical coherence tomography angiography (UW-OCTA) is a non-invasive and safe
imaging modality in DR diagnosis system, but there is a lack of publicly
available benchmarks for model development and evaluation. To promote further
research and scientific benchmarking for diabetic retinopathy analysis using
UW-OCTA images, we organized a challenge named "DRAC - Diabetic Retinopathy
Analysis Challenge" in conjunction with the 25th International Conference on
Medical Image Computing and Computer Assisted Intervention (MICCAI 2022). The
challenge consists of three tasks: segmentation of DR lesions, image quality
assessment and DR grading. The scientific community responded positively to the
challenge, with 11, 12, and 13 teams from geographically diverse institutes
submitting different solutions in these three tasks, respectively. This paper
presents a summary and analysis of the top-performing solutions and results for
each task of the challenge. The obtained results from top algorithms indicate
the importance of data augmentation, model architecture and ensemble of
networks in improving the performance of deep learning models. These findings
have the potential to enable new developments in diabetic retinopathy analysis.
The challenge remains open for post-challenge registrations and submissions for
benchmarking future methodology developments
Definitions of disease burden across the spectrum of metastatic castration-sensitive prostate cancer: comparison by disease outcomes and genomics
BACKGROUND: Several definitions have attempted to stratify metastatic castrate-sensitive prostate cancer (mCSPC) into low and high-volume states. However, at this time, comparison of these definitions is limited. Here we aim to compare definitions of metastatic volume in mCSPC with respect to clinical outcomes and mutational profiles. METHODS: We performed a retrospective review of patients with biochemically recurrent or mCSPC whose tumors underwent somatic targeted sequencing. 294 patients were included with median follow-up of 58.3 months. Patients were classified into low and high-volume disease per CHAARTED, STAMPEDE, and two numeric (≤3 and ≤5) definitions. Endpoints including radiographic progression-free survival (rPFS), time to development of castration resistance (tdCRPC), and overall survival (OS) were evaluated with Kaplan-Meier survival curves and log-rank test. The incidence of driver mutations between definitions were compared. RESULTS: Median OS and tdCRPC were shorter for high-volume than low-volume disease for all four definitions. In the majority of patients (84.7%) metastatic volume classification did not change across all four definitions. High volume disease was significantly associated with worse OS for all four definitions (CHAARTED: HR 2.89; p < 0.01, STAMPEDE: HR 3.82; p < 0.01, numeric ≤3: HR 4.67; p < 0.01, numeric ≤5: HR 3.76; p < 0.01) however, were similar for high (p = 0.95) and low volume (p = 0.79) disease across all four definitions. Those with discordant classification tended to have more aggressive clinical behavior and mutational profiles. Patients with low-volume disease and TP53 mutation experienced a more aggressive course with rPFS more closely mirroring high-volume disease. CONCLUSIONS: The spectrum of mCSPC was confirmed across four different metastatic definitions for clinical endpoints and genetics. All definitions were generally similar in classification of patients, outcomes, and genetic makeup. Given these findings, the simplicity of numerical definitions might be preferred, especially when integrating metastasis directed therapy. Incorporation of tumor genetics may allow further refinement of current metastatic definitions
Genome-Wide Association Mapping and Genomic Prediction Analyses Reveal the Genetic Architecture of Grain Yield and Flowering Time Under Drought and Heat Stress Conditions in Maize
Drought stress (DS) is a major constraint to maize yield production. Heat stress (HS) alone and in combination with DS are likely to become the increasing constraints. Association mapping and genomic prediction (GP) analyses were conducted in a collection of 300 tropical and subtropical maize inbred lines to reveal the genetic architecture of grain yield and flowering time under well-watered (WW), DS, HS, and combined DS and HS conditions. Out of the 381,165 genotyping-by-sequencing SNPs, 1549 SNPs were significantly associated with all the 12 trait-environment combinations, the average PVE (phenotypic variation explained) by these SNPs was 4.33%, and 541 of them had a PVE value greater than 5%. These significant associations were clustered into 446 genomic regions with a window size of 20 Mb per region, and 673 candidate genes containing the significantly associated SNPs were identified. In addition, 33 hotspots were identified for 12 trait-environment combinations and most were located on chromosomes 1 and 8. Compared with single SNP-based association mapping, the haplotype-based associated mapping detected fewer number of significant associations and candidate genes with higher PVE values. All the 688 candidate genes were enriched into 15 gene ontology terms, and 46 candidate genes showed significant differential expression under the WW and DS conditions. Association mapping results identified few overlapped significant markers and candidate genes for the same traits evaluated under different managements, indicating the genetic divergence between the individual stress tolerance and the combined drought and HS tolerance. The GP accuracies obtained from the marker-trait associated SNPs were relatively higher than those obtained from the genome-wide SNPs for most of the target traits. The genetic architecture information of the grain yield and flowering time revealed in this study, and the genomic regions identified for the different trait-environment combinations are useful in accelerating the efforts on rapid development of the stress-tolerant maize germplasm through marker-assisted selection and/or genomic selection
Parent-of-origin-specific allelic associations among 106 genomic loci for age at menarche.
Age at menarche is a marker of timing of puberty in females. It varies widely between individuals, is a heritable trait and is associated with risks for obesity, type 2 diabetes, cardiovascular disease, breast cancer and all-cause mortality. Studies of rare human disorders of puberty and animal models point to a complex hypothalamic-pituitary-hormonal regulation, but the mechanisms that determine pubertal timing and underlie its links to disease risk remain unclear. Here, using genome-wide and custom-genotyping arrays in up to 182,416 women of European descent from 57 studies, we found robust evidence (P < 5 × 10(-8)) for 123 signals at 106 genomic loci associated with age at menarche. Many loci were associated with other pubertal traits in both sexes, and there was substantial overlap with genes implicated in body mass index and various diseases, including rare disorders of puberty. Menarche signals were enriched in imprinted regions, with three loci (DLK1-WDR25, MKRN3-MAGEL2 and KCNK9) demonstrating parent-of-origin-specific associations concordant with known parental expression patterns. Pathway analyses implicated nuclear hormone receptors, particularly retinoic acid and γ-aminobutyric acid-B2 receptor signalling, among novel mechanisms that regulate pubertal timing in humans. Our findings suggest a genetic architecture involving at least hundreds of common variants in the coordinated timing of the pubertal transition
The 2nd Workshop on Maritime Computer Vision (MaCVi) 2024
The 2nd Workshop on Maritime Computer Vision (MaCVi) 2024 addresses maritime
computer vision for Unmanned Aerial Vehicles (UAV) and Unmanned Surface
Vehicles (USV). Three challenges categories are considered: (i) UAV-based
Maritime Object Tracking with Re-identification, (ii) USV-based Maritime
Obstacle Segmentation and Detection, (iii) USV-based Maritime Boat Tracking.
The USV-based Maritime Obstacle Segmentation and Detection features three
sub-challenges, including a new embedded challenge addressing efficicent
inference on real-world embedded devices. This report offers a comprehensive
overview of the findings from the challenges. We provide both statistical and
qualitative analyses, evaluating trends from over 195 submissions. All
datasets, evaluation code, and the leaderboard are available to the public at
https://macvi.org/workshop/macvi24.Comment: Part of 2nd Workshop on Maritime Computer Vision (MaCVi) 2024 IEEE
Xplore submission as part of WACV 202
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