10,073 research outputs found
Influenza H1N1 antigenic and sequence data
No full textH1N1 is the earliest emerging subtype of influenza A viruses with available genomic sequences, has caused several pandemics and seasonal epidemics, resulting in millions of deaths and enormous economic losses. Timely determination of new antigenic variants is crucial for the vaccine selection and flu prevention. In this study, we chronologically divided the H1N1 strains into several periods in terms of the epidemics and pandemics. Computational models have been constructed to predict antigenic variants based on epidemic and pandemic periods. By sequence analysis, we demonstrated the diverse mutation patterns of HA1 protein on different periods and that an individual model built upon each period can not represent the variations of H1N1 virus. A stacking model was established for the prediction of antigenic variants, combining all the variation patterns across periods, which would help assess a new influenza strain’s antigenicity. Three different feature extraction methods, i.e. residue-based, regional band-based and epitope region-based, were applied on the stacking model to verify its feasibility and robustness. The results showed the capability of determining antigenic variants prediction with accuracy as high as 0.908 which performed better than any of the single models. The prediction performance using the stacking model indicates clear distinctions of mutation patterns and antigenicity between epidemic and pandemic strains. It would also facilitate rapid determination of antigenic variants and influenza surveillanc
Computational identification of physicochemical signatures for host tropism of influenza A virus
No full textAvian influenza viruses from migratory birds have managed to cross host species barriers and infected various hosts like human and swine. Epidemics and pandemics might occur when influenza viruses are adapted to humans, causing deaths and enormous economic loss. Receptor-binding specificity of the virus is one of the key factors for the transmission of influenza viruses across species. The determination of host tropism and understanding of molecular properties would help identify the mechanism why zoonotic influenza viruses can cross the species barrier and infect humans. In this study, we have constructed computational models for host tropism prediction on human-adapted subtypes of influenza HA proteins using random forest. The feature vectors of the prediction models were generated based on seven physicochemical properties of amino acids from influenza sequences of three major hosts. Feature aggregation and associative rules were further applied to select top 20 features and extract host-associated physicochemical signatures on the combined model of nonspecific subtypes. The prediction model achieved high performance (Accuracy=0.948, Precision=0.954, MCC=0.922). Support and confidence rates were calculated for the host class-association rules. The results indicated that secondary structure and normalized Van der Waals volume were identified as more important physicochemical signatures in determining the host tropism
VCC-LF dataset
No full textThis is readme for VCC-LF dataset.
This dataset provides light field mat files that capture by Lytro I.
The light field resolusion is [h,w,u,v,d].
If you use these data or our toolkit code, please cite our paper properly
@inproceedings{ lirsiggraphasia2019,
title={Hierarchical and View-invariant Light Field Segmentation by Maximizing Entropy Rate on 4D Ray Graphs},
author={Li, Rui and Heidrich, Wolfgang},
booktitle={ACM Transactions on Graphics (Proc. SIGGRAPH Asia)},
year={2019},
publisher={ACM}
The trombone as portrayed in Portuguese iconography during the sixteenth and early seventeenth centuries
No full textThis article studies eleven sixteenth and seventeenth century iconographical sources depicting slide brass instruments, by both Portuguese and foreign artists active in Portugal, as well as foreign artists depicting Portuguese scenes. This study addresses questions concerning aspects of trombone technique that have not previously been considered and may have implications in the way the trombone was understood elsewhere in Europe. It focuses on aspects of technique depicted that may be representative of the trombone’s contemporary design and performance and therefore the manner in which the instrument was held and indeed played. Finally, this article suggests a transitional technical period when the way of holding the single-slide trumpet may have been used to play the trombone.Publisher PD
Hierarchical and View-invariant Light Field Segmentation by Maximizing Entropy Rate on 4D Ray Graphs (Supplement)
No full textThe supplementary material for paper "Rui Li, Wolfgang Heidrich, Hierarchical and View-invariant Light Field Segmentation by Maximizing Entropy Rate on 4D Ray Graphs. In SIGGRAPH Asia, 2019
Literary Strategies in Rui Rocha
No full textInteressa a este artigo perquirir as estratégias, de hibridismo, alegoria e voz poética, usadas pelo autor, Rui Rocha, para compor alguns dos poemas de suas obras Taotologias e A oriente do silêncio, apontando o modo como as cenas imagéticas apresentam-se como arte final.
ABSTRACT
This article investigates the hybridism strategies, allegory strategies and poetic voice strategies, who Rui Rocha author uses to compose some of his poems. He wrote Taotologias and A oriente do silêncio. And also, this article wants to demonstrate the way in which scenes helps to make the final art of those books.
Keywords: Hybridism, Allegory, Poetic voice.This article investigates the hybridism strategies, allegory strategies and poetic voice strategies, which writer Rui Rocha uses to compose some of his poems. He wrote Taotologias and A oriente do silêncio . Moreover, this article demonstrates the
way in which scenes help to make the final artwork of those books
Supplemental material for Oxygen therapy versus conservative therapy in suspected uncomplicated myocardial infarction without hypoxemia: A meta-analysis of randomized controlled studies
No full textSupplemental material, Supplemental_material for Oxygen therapy versus conservative therapy in suspected uncomplicated myocardial infarction without hypoxemia: A meta-analysis of randomized controlled studies by Rui Zhang, Youfeng Zhu, Min Zhang, Haiyan Yin and Jianrui Wei in Hong Kong Journal of Emergency Medicine</p
Rui Barbosa e J. J. Seabra: a Bahia na Primeira República
No full textBook review "The fox and the eagle. J. J. Seabra and Rui Barbosa in Bahian politics ofFirst Republic", by the author Silvia Noronha Sarmento.Book review "The fox and the eagle. J. J. Seabra and Rui Barbosa in Bahian politics ofFirst Republic", by the author Silvia Noronha Sarmento.Resenha do livro "A raposa e a águia. J. J. Seabra e Rui Barbosa na política baiana da Primeira República", da autora Sílvia Noronha Sarmento.
Space Charge in LLDPE Loaded with Nanoparticles
No full textFillers are widely used in insulation systems to achieve specific electrical, mechanical and thermal properties. Recently, polymer nanocomposites have attracted significant attention as a means of improving their performance and widening their utility. To better use the nanocomposites, a thorough understanding of interaction between nanoparticles and their matrix is important. The interaction can be studied by various methods. In the present study we focus our attention on space charge dynamics of linear low density polyethylene (LLDPE) loaded with nanometric size aluminium oxide (alumina) under dc electric fields. To obtain a good dispersion of nano fillers in LLDPE, a Brabender mixer has been utilised. Four types of LLDPE nanocomposite films were prepared with concentrations of alumina of 0, 1, 5 and 10 wt% for space charge measurements. They were electrically stressed at three electric field levels of 10, 50 and 100 kV/mm and space charge dynamics during stressing period and decay after the removal of the applied electric field were observed. The results show that space charge dynamics in nanocomposites are dependent on both content of filler and the applied electric field. Generally, the amount of space charge in the sample with 1% of alumina is less while there is a significant change in characteristics in the sample loaded with 5% alumina or more. In particular, the electrical performance in the sample with 10% alumina deteriorates, indicating there is an optimal load of alumina
sj-pdf-1-jis-10.1177_01655515221105038 – Supplemental material for Improved PageRank and New Indices for Academic Impact Evaluation Using AI Papers as Case Studies
No full textSupplemental material, sj-pdf-1-jis-10.1177_01655515221105038 for Improved PageRank and New Indices for Academic Impact Evaluation Using AI Papers as Case Studies by Rui Wang, Shijie Li, Qing Yin, Ji Zhang, Rujing Yao and Ou Wu in Journal of Information Science</p
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