Search results for "PDF"
showing 10 items of 32 documents
Platelet-derived growth factor alpha mediates the proliferation of peripheral T-cell lymphoma cells via an autocrine regulatory pathway.
2014
Peripheral T-cell lymphomas not otherwise specified (PTCL/NOS) are very aggressive tumors characterized by consistent aberrant expression of platelet-derived growth factor receptor alpha (PDGFRA). In this study, we aimed to identify the determinants of PDGFRA activity in PTCL/NOS and to elucidate the biological consequences of its activation. We observed overexpression of the PDGFRA gene by gene expression profiling in most of the tested PTCLs and confirmed the expression of PDGFRA and phospho-PDGFRA using immunohistochemistry. The integrity of the PDFGRA locus was demonstrated using several different approaches, including massive parallel sequencing and Sanger sequencing. PDGF-AA was found…
Can we fit nuclear PDFs with the high-x CLAS data?
2020
AbstractNuclear parton distribution functions (nuclear PDFs) are non-perturbative objects that encode the partonic behaviour of bound nucleons. To avoid potential higher-twist contributions, the data probing the high-x end of nuclear PDFs are sometimes left out from the global extractions despite their potential to constrain the fit parameters. In the present work we focus on the kinematic corner covered by the new high-x data measured by the CLAS/JLab collaboration. By using the Hessian re-weighting technique, we are able to quantitatively test the compatibility of these data with globally analyzed nuclear PDFs and explore the expected impact on the valence-quark distributions at high x. W…
Interpreting Heterogeneous Geospatial Data Using Semantic Web Technologies
2016
International audience; The paper presents work on implementation of semantic technologies within a geospatial environment to provide a common base for further semantic interpretation. The work adds on the current works in similar areas where priorities are more on spatial data integration. We assert that having a common unified semantic view on heterogeneous datasets provides a dimension that allows us to extend beyond conventional concepts of searchability, reusability, composability and interoperability of digital geospatial data. It provides contextual understanding on geodata that will enhance effective interpretations through possible reasoning capabilities. We highlight this through …
First measurement of the Sivers asymmetry for gluons using SIDIS data
2017
The Sivers function describes the correlation between the transverse spin of a nucleon and the transverse motion of its partons. It was extracted from measurements of the azimuthal asymmetry of hadrons produced in semi-inclusive deep inelastic scattering of leptons off transversely polarised nucleon targets, and it turned out to be non-zero for quarks. In this letter the evaluation of the Sivers asymmetry for gluons in the same process is presented. The analysis method is based on a Monte Carlo simulation that includes three hard processes: photon-gluon fusion, QCD Compton scattering and leading-order virtual-photon absorption process. The Sivers asymmetries of the three processes are simul…
Hadroproduction of open heavy flavour for PDF analyses
2019
Due to the large masses of the charm and bottom quarks, their production cross sections are calculable within the perturbative QCD. This makes the heavy-quark mesons important observables in high-energy collisions of protons and nuclei. However, the available calculations for heavy-flavored-meson hadroproduction have been somewhat problematic in reliably describing the cross sections across the full kinematic range from zero to very high $p_{\rm T}$. This has put some question marks on the robustness of LHC heavy-flavored-meson measurements in studying the partonic structure of the colliding hadrons and nuclei. Here, we introduce SACOT-$m_{\rm T}$ - a novel scheme for open heavy-flavour had…
Elektronisko parakstu īstenošana PDF dokumentos
2015
Šis darbs apskata elektronisko parakstu īstenošanu PDF dokumentos. Tas pēta elektronisko parakstu struktūru un funkcionalitāti. Darba mērķis ir izpētīt elektronisko parakstu standartus PDF dokumentiem, struktūru, darbības principus un īstenošanas iespējas. Uzmanība tiek pievērsta pakarstu struktūrai, un ir apskatīti nepieciešamie dati elektronisko parakstu veidošanai. Tiek izpētīti papildus procesi un servisi, kurus ir nepieciešams nodrošināt elektronisko parakstu sniedzēju pusē. Papildus tiek apskatīti dažu elektronisko parakstu sniedzēju produkti. Darbā tiek aprakstīta tīmekļa lietotnes veidošana, kas nodarbojas ar parakstu pievienošanu un parakstu pārbaudi PDF dokumentos. Tiek parādīts, …
An update on nuclear PDFs at the LHeC
2017
The prospects for a measurement of nuclear parton distribution functions (PDFs) at the Large Hadron--Electron Collider are discussed in the light of recent progress made in the front of global analysis of nuclear PDFs.
Infopath tehnoloģijas iziešana no aprites - iespējamie aizvietotāji un to analīze
2016
Šajā darbā tiek runāts par veidlapu izmantošanu SharePoint vidē. Tika pētīta InfoPath Forms risinājuma funkcionalitāte un integrācija ar SharePoint vidi. Darba mērķis bija izpētīt alternatīvus risinājumus, kuri var aizstāt InfoPath Forms, par kuru tika izziņots, ka tas izies no aprites. Tika apskatīti produkti, kas ir piedāvāti InfoPath tematiskajās vietnēs. Tika analizētas risinājumu iespējas, vājās vietas un guvumi, salīdzinājumā ar InfoPath. Darbā tika aprakstīts katra rīka, parastas veidlapas izveides process un ir apkopoti secinājumi. Darbā tika izveidots viens no populārākiem InfoPath veidlapas darbplūsmas scenārijiem un tika pārbaudīts, kā katrs no piedāvātiem aizvietotājrīkiem pārva…
La circulation des termes dans le discours médiatique : peut-on informer sans déformer ?
2016
Media diversification and information superhighways that have become faster and faster have boosted the circulation of economic terms in the popular press, along with the interaction between editorial contents targeted at the general population, which are similar in nature. This twin phenomenon of circulation and interaction was highlighted in a contrastive study of the way the German and the French press managed the euro crisis between 2011 and 2013: articles devoted to the debt of countries that are going through hard economic times require expert knowledge, but also resort to popularization strategies that show multi-level interdiscursivity.
Probing the small- x nuclear gluon distributions with isolated photons at forward rapidities in p+Pb collisions at the LHC
2014
Inclusive direct photon production in p+Pb collisions at the LHC is studied within the NLO perturbative QCD. Our aim is to quantify the dominant $x$ regions probed at different rapidities and to identify the best conditions for testing the nuclear gluon parton distribution functions (nPDFs) at small $x$. A comparison to the inclusive pion production reveals that from these two processes the photons carry more sensitivity to the small-$x$ partons and that this sensitivity can be further increased by imposing an isolation cut for the photon events. The details of the isolation criteria, however, seem to make only a small difference to the studied $x$ sensitivity and have practically no effect…