218 results match your criteria: "Leiden Institute of Advanced Computer Science[Affiliation]"
Eur J Sport Sci
April 2022
Leiden Institute of Advanced Computer Science (LIACS), Leiden University, Leiden, The Netherlands.
We implemented a machine learning approach to investigate individual indicators of training load and wellness that may predict the emergence or development of overuse injuries in professional volleyball. In this retrospective study, we collected data of 14 elite volleyball players (mean ± SD age: 27 ± 3 years, weight: 90.5 ± 6.
View Article and Find Full Text PDFElife
December 2020
Leiden Institute of Advanced Computer Science, Leiden University, Leiden, Netherlands.
Using multiple human annotators and ensembles of trained networks can improve the performance of deep-learning methods in research.
View Article and Find Full Text PDFRNA
February 2021
Department of Viroscience, Erasmus Medical Center, 3000 CA Rotterdam, the Netherlands.
The presence of multiple basic amino acids in the protease cleavage site of the hemagglutinin (HA) protein is the main molecular determinant of virulence of highly pathogenic avian influenza (HPAI) viruses. Recombination of HA RNA with other RNA molecules of host or virus origin is a dominant mechanism of multibasic cleavage site (MBCS) acquisition for H7 subtype HA. Using alignments of HA RNA sequences from documented cases of MBCS insertion due to recombination, we show that such recombination with host RNAs is most likely to occur at particular hotspots in ribosomal RNAs (rRNAs), transfer RNAs (tRNAs), and viral RNAs.
View Article and Find Full Text PDFRNA Biol
May 2021
Leiden Institute of Chemistry, Leiden University, Leiden, The Netherlands.
Subgenomic RNAs are produced by several RNA viruses through incomplete degradation of their genomic RNA by the exoribonuclease Xrn1, and have been shown to be essential for viral growth and pathogenicity. Within the flavivirus genus of the family, two distinct classes of Xrn1-resistant RNA motifs have been proposed; one for mosquito-borne and insect-specific flaviviruses, and one for tick-borne flaviviruses and no-known-vector flaviviruses. We investigated tick-borne and no-known-vector flavivirus Xrn1-resistant RNA motifs through systematic mutational analysis and showed that both classes actually possess very similar structural configurations, including a double pseudoknot and a base-triple at identical, conserved locations.
View Article and Find Full Text PDFBioinformatics
May 2021
Group Imaging & Bioinformatics, Leiden Institute of Advanced Computer Science (LIACS), Leiden University, 2300 RA Leiden, The Netherlands.
Motivation: The Flavivirus genus includes several important pathogens, such as Zika, dengue and yellow fever virus. Flavivirus RNA genomes contain a number of functionally important structures in their 3' untranslated regions (3'UTRs). Due to the diversity of sequences and topologies of these structures, their identification is often difficult.
View Article and Find Full Text PDFBr J Pharmacol
December 2020
Division of Systems Biomedicine and Pharmacology, Leiden Academic Centre for Drug Research, Leiden University, Leiden, The Netherlands.
Background And Purpose: There is a clear need for innovation in anti-tuberculosis drug development. The zebrafish larva is an attractive disease model in tuberculosis research. To translate pharmacological findings to higher vertebrates, including humans, the internal exposure of drugs needs to be quantified and linked to observed response.
View Article and Find Full Text PDFJ Appl Physiol (1985)
October 2020
Leiden Institute of Advanced Computer Science, Universiteit Leiden, Leiden, the Netherlands.
Worldwide scientific output is growing faster and faster. Academics should not only publish much and fast, but also publish research with impact. The aim of this study is to use machine learning to investigate characteristics of articles that were published in the between 2009 and 2018, and characterize high-impact articles.
View Article and Find Full Text PDFBrief Bioinform
May 2021
Leiden Institute of Advanced Computer Science, Leiden University.
Virulence factors (VFs) enable pathogens to infect their hosts. A wealth of individual, disease-focused studies has identified a wide variety of VFs, and the growing mass of bacterial genome sequence data provides an opportunity for computational methods aimed at predicting VFs. Despite their attractive advantages and performance improvements, the existing methods have some limitations and drawbacks.
View Article and Find Full Text PDFTransfusion
August 2020
Donor Medicine Research, Sanquin Research, Amsterdam, The Netherlands.
Background: Whole blood donors are at risk of becoming iron deficient. To monitor iron stores, Sanquin implemented a new deferral policy based on ferritin levels, in addition to the traditional hemoglobin measurements.
Methods: Ferritin levels are determined in every fifth donation, as well as in all first-time donors.
J Integr Bioinform
May 2020
Leiden Institute of Advanced Computer Science (LIACS), Leiden University, Leiden, The Netherlands.
Fungi have crucial roles in ecosystems, and are important associates for many organisms. They are adapted to a wide variety of habitats, however their global distribution and diversity remains poorly documented. The exponential growth of DNA barcode information retrieved from the environment is assisting considerably the traditional ways for unraveling fungal diversity and detection.
View Article and Find Full Text PDFFront Psychol
May 2020
Department of Experimental Psychology, University of Oxford, Oxford, United Kingdom.
Personality affects dyadic relations and teamwork, yet its role among groups of friends has been little explored. We examine for the first time whether similarity in personality enhances the effectiveness of real-life friendship groups. Using data from a longitudinal study of a European fraternity (10 male and 15 female groups), we investigate how individual Big Five personality traits were associated with group formation and whether personality homophily related to how successful the groups were over 1 year ( = 147-196).
View Article and Find Full Text PDFBMC Bioinformatics
May 2020
Dept of Applied Stem Cell Technologies, MIRA Institute, University of Twente, Drienerlolaan 5, Enschede, 7522 NB, The Netherlands.
Background: Cardiotoxicity, characterized by severe cardiac dysfunction, is a major problem in patients treated with different classes of anticancer drugs. Development of predictable human-based models and assays for drug screening are crucial for preventing potential drug-induced adverse effects. Current animal in vivo models and cell lines are not always adequate to represent human biology.
View Article and Find Full Text PDFJ Chem Inf Model
September 2020
Division of Drug Discovery & Safety, Leiden Academic Centre for Drug Research, Leiden University, Einsteinweg 55, 2333 CC, Leiden, The Netherlands.
Kinases are frequently studied in the context of anticancer drugs. Their involvement in cell responses, such as proliferation, differentiation, and apoptosis, makes them interesting subjects in multitarget drug design. In this study, a workflow is presented that models the bioactivity spectra for two panels of kinases: (1) inhibition of RET, BRAF, SRC, and S6K, while avoiding inhibition of MKNK1, TTK, ERK8, PDK1, and PAK3, and (2) inhibition of AURKA, PAK1, FGFR1, and LKB1, while avoiding inhibition of PAK3, TAK1, and PIK3CA.
View Article and Find Full Text PDFJ Imaging
April 2020
Centrum Wiskunde & Informatica, Science Park 123, 1098 XG Amsterdam, The Netherlands.
Genomics Proteomics Bioinformatics
February 2020
School of Automation Science and Engineering, Faculty of Electronic and Information Engineering, Xi'an Jiaotong University, Xi'an 710049, China; MOE Key Laboratory for Intelligent Networks & Networks Security, Faculty of Electronic and Information Engineering, Xi'an Jiaotong University, Xi'an 710049, China; School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China; Genome Institute, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China. Electronic address:
Microsatellite instability (MSI) is a key biomarker for cancer therapy and prognosis. Traditional experimental assays are laborious and time-consuming, and next-generation sequencing-based computational methods do not work on leukemia samples, paraffin-embedded samples, or patient-derived xenografts/organoids, due to the requirement of matched normal samples. Herein, we developed MSIsensor-pro, an open-source single sample MSI scoring method for research and clinical applications.
View Article and Find Full Text PDFPLoS Comput Biol
February 2020
Science Communication and Society, Institute of Biology, Leiden University, Leiden, The Netherlands.
Front Physiol
October 2019
Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Amsterdam Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam, Netherlands.
Do athletes specialize toward sports disciplines that are well aligned with their anthropometry? Novel machine-learning algorithms now enable scientists to cluster athletes based on their individual anthropometry while integrating multiple anthropometric dimensions, which may provide new perspectives on anthropometry-dependent sports specialization. We aimed to identify clusters of competitive cyclists based on their individual anthropometry using multiple anthropometric measures, and to evaluate whether athletes with a similar anthropometry also competed in the same cycling discipline. Additionally, we assessed differences in sprint and endurance performance between the anthropometric clusters.
View Article and Find Full Text PDFVirus Evol
July 2019
Department of Viroscience, Erasmus Medical Center, Dr. Molewaterplein 40, 3015 GD Rotterdam, The Netherlands.
The acquisition of a multibasic cleavage site (MBCS) in the hemagglutinin (HA) glycoprotein is the main determinant of the conversion of low pathogenic avian influenza viruses into highly pathogenic strains, facilitating HA cleavage and virus replication in a broader range of host cells. In nature, substitutions or insertions in HA RNA genomic segments that code for multiple basic amino acids have been observed only in the HA genes of two out of sixteen subtypes circulating in birds, H5 and H7. Given the compatibility of MBCS motifs with HA proteins of numerous subtypes, this selectivity was hypothesized to be determined by the existence of specific motifs in HA RNA, in particular structured domains.
View Article and Find Full Text PDFPLoS One
March 2020
Leiden Institute of Advanced Computer Science (LIACS), Leiden University, Leiden, the Netherlands.
Commercially motivated junk news-i.e. money-driven, highly shareable clickbait with low journalistic production standards-constitutes a vast and largely unexplored news media ecosystem.
View Article and Find Full Text PDFJ Biomed Inform
July 2019
Department of Psychiatry, Radboud University Nijmegen Medical Center, the Netherlands. Electronic address:
Unsupervised learning is often used to obtain insight into the underlying structure of medical data, but it is not always clear how to use such structure in an effective way. In this paper, we propose a probabilistic framework for predicting disease dynamics guided by latent states. The framework is based on hidden Markov models and aims to facilitate the selection of hypotheses that might yield insight into the dynamics.
View Article and Find Full Text PDFJMIR Cancer
April 2019
Department of Health Services Research and Health Economics, National Institute of Public Health and the Environment, Bilthoven, Netherlands.
Background: Peer-to-peer online support groups and the discussion forums in these groups can help patients by providing opportunities for increasing their empowerment. Most previous research on online empowerment and online social support uses qualitative methods or questionnaires to gain insight into the dynamics of online empowerment processes.
Objective: The overall goal of this study was to analyze the presence of the empowerment processes in the online peer-to-peer communication of people affected by cancer, using text mining techniques.
RNA Biol
June 2019
a Leiden Institute of Chemistry , Leiden University, Leiden , The Netherlands.
Xrn1 is a major 5'-3' exoribonuclease involved in the RNA metabolism of many eukaryotic species. RNA viruses have evolved ways to thwart Xrn1 in order to produce subgenomic non-coding RNA that affects the hosts RNA metabolism. The 3' untranslated region of several beny- and cucumovirus RNAs harbors a so-called 'coremin' motif that is required for Xrn1 stalling.
View Article and Find Full Text PDFSci Data
March 2019
Leiden University Medical Center, Leiden and Dutch TechCenter for Life Sciences, Utrecht, 2333 ZA, The Netherlands.
Forensic Sci Res
September 2018
Leiden University, Leiden Institute of Advanced Computer Science (LIACS), Leiden, The Netherlands.
Law enforcement agencies have a restricted area in which their powers apply, which is called their jurisdiction. These restrictions also apply to the Internet. However, on the Internet, the physical borders of the jurisdiction, typically country borders, are hard to discover.
View Article and Find Full Text PDFEvol Comput
July 2019
Information Systems and Statistics, University of Münster, 48149 Münster, Germany
It has long been observed that for practically any computational problem that has been intensely studied, different instances are best solved using different algorithms. This is particularly pronounced for computationally hard problems, where in most cases, no single algorithm defines the state of the art; instead, there is a set of algorithms with complementary strengths. This performance complementarity can be exploited in various ways, one of which is based on the idea of selecting, from a set of given algorithms, for each problem instance to be solved the one expected to perform best.
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