171 research outputs found
“Un paĂs de ConstituciĂłn abierta”. Las “leyes fundamentales” y la modernizaciĂłn del franquismo
Las Leyes fundamentales del franquismo fueron consideradas durante mucho tiempo como la ConstituciĂłn polĂtica de la dictadura. Hoy hay un consenso general en negar a estas normas heterogĂ©neas el carácter de ConstituciĂłn: fueron textos aprobados en periodos muy diferentes (1938 la primera ley, 1967 la Ăşltima) sin seguir un diseño coherente y con fuentes de inspiraciĂłn diversas. Sin embargo, en los años 60 y 70 el legislador, la propaganda y los juristas del rĂ©gimen llevaron a cabo un proceso de resignificaciĂłn de los diferentes textos que desde 1938 hasta 1967 recibieron esta calificaciĂłn. Se tratĂł de un intento de racionalizaciĂłn y modernizaciĂłn del marco normativo de la dictadura que buscaba legitimarse en el exterior y en el interior como “paĂs de ConstituciĂłn abierta”, equiparándose a los paĂses democráticos y, al mismo tiempo, preparando el franquismo post-Franco. Nuestro artĂculo analiza las diferentes “Leyes fundamentales” y el proceso de resignificaciĂłn que sufrieron en el tardofranquismo
Supporting language diversity of European MOOCs with the EMMA platform
This paper introduces the cross-language support of the EMMA MOOC platform. Based on a discussion of language diversity in Europe we introduce the development and evaluation of automated translation of texts and subtitling of videos from Dutch into English. The development of an Automatic Speech Recognition (ASR) system and a Statistical Machine Translation (SMT) system is described. The resources employed and evaluation approach is introduced. Initial evaluation results are presented. Finally, we provide an outlook into future research and development.This work is partially funded by the EU under the Competitiveness and Innovation Framework Program 2007- 2017 (CIP) in the European Multiple MOOC Aggregator (EMMA) project. Grant Agreement no. 621030
Chiari malformation type I: a case-control association study of 58 developmental genes
Chiari malformation type I (CMI) is a disorder characterized by hindbrain overcrowding into an underdeveloped posterior cranial fossa (PCF), often causing progressive neurological symptoms. The etiology of CMI remains unclear and is most likely multifactorial. A putative genetic contribution to CMI is suggested by familial aggregation and twin studies. Experimental models and human morphometric studies have suggested an underlying paraxial mesoderm insufficiency. We performed a case-control association study of 303 tag single nucleotide polymorphisms (SNP) across 58 candidate genes involved in early paraxial mesoderm development in a sample of 415 CMI patients and 524 sex-matched controls. A subgroup of patients diagnosed with classical, small-PCF CMI by means of MRI-based PCF morphometry (n = 186), underwent additional analysis. The genes selected are involved in signalling gradients occurring during segmental patterning of the occipital somites (FGF8, Wnt, and retinoic acid pathways and from bone morphogenetic proteins or BMP, Notch, Cdx and Hox pathways) or in placental angiogenesis, sclerotome development or CMI-associated syndromes. Single-marker analysis identified nominal associations with 18 SNPs in 14 genes (CDX1, FLT1, RARG, NKD2, MSGN1, RBPJ1, FGFR1, RDH10, NOG, RARA, LFNG, KDR, ALDH1A2, BMPR1A) considering the whole CMI sample. None of these overcame corrections for multiple comparisons, in contrast with four SNPs in CDX1, FLT1 and ALDH1A2 in the classical CMI group. Multiple marker analysis identified a risk haplotype for classical CMI in ALDH1A2 and CDX1. Furthermore, we analyzed the possible contributions of the most significantly associated SNPs to different PCF morphometric traits. These findings suggest that common variants in genes involved in somitogenesis and fetal vascular development may confer susceptibility to CMI
Lestaurtinib Inhibition of the JAK/STAT Signaling Pathway in Hodgkin Lymphoma Inhibits Proliferation and Induces Apoptosis
Standard cytotoxic chemotherapy for Hodgkin Lymphoma (HL) has changed little in 30 years; the treatment for patients with relapsed or refractory disease remains challenging and novel agents are under development. JAK/STAT constitutive activation plays an important role in the pathogenesis of HL. Lestaurtinib is an orally bioavailable multikinase inhibitor that has recently been shown to inhibit JAK2 in myeloproliferative disorders. The potential role of Lestaurtinib in HL therapy is unknown. We have analyzed the effect of Lestaurtinib treatment in five HL cell lines from refractory patients, L-428, L-1236, L-540, HDML-2 and HD-MY-Z. At 48 h, a dose-dependent cell growth inhibition (23%–66% at 300 nM) and apoptotic increment (10%–64% at 300 nM) were observed. Moreover, Lestaurtinib inhibited JAK2, STAT5 and STAT3 phosphorylation and reduced the mRNA expression of its downstream antiapoptotic target Bcl-xL. In addition, we have analyzed the effect of Lestaurtinib treatment in lymph nodes from four classic HL patients. We observed a decrease in cell viability at 24 hours of treatment in three patients (mean decrease of 27% at 300 nM). Our findings provide, for the first time, a molecular rationale for testing JAK2 inhibitors, specifically Lestaurtinib, in HL patients
Bicellar systems to modify the phase behaviour of skin stratum corneum lipids
Bicellar systems are a fascinating category of versatile lipid assemblies that comprise bilayered disk-shaped nanoaggregates formed in water by long and short alkyl chain phospholipids. Bicelles bridge the gap between micelles and lipid vesicles by combining the attractive properties of both systems. These structures have recently been proposed in dermatological, cosmetic and pharmaceutical applications. Two new binary bicellar systems composed of cholesterol sulphate (SCHOL) and long-chain phospholipids (dimyristoyl- phosphatidylcholine, DMPC, or dipalmitoyl-phosphatidylcholine, DPPC) are characterised herein by differential scanning calorimetry, fluorescence spectroscopy, X-ray scattering and microscopy. Additionally, a comparative study on skin treated with the new SCHOL systems (DMPC/SCHOL and DPPC/SCHOL) and classic DHPC systems (DMPC/DHPC and DPPC/DHPC) was performed. These studies were conducted to determinate how deeply bicelles penetrate into the skin and the extension of their effect on the phase behaviour of stratum corneum (SC) lipids using attenuated total reflectance-Fourier transform infrared spectroscopy and two-photon excitation fluorescence microscopy. Our results show that SCHOL modified the typical discoidal morphology and the phase behaviour of the systems, inducing coexistence of two phases, liquid-ordered and ripple phases. The effect of the systems on SC lipids depends on their composition and is related to the fluidity of the SC lipid alkyl chains. Thus, systems with DMPC induced more disorder in SC lipids than systems with DPPC, and SCHOL did not modify the lipid arrangement. Perdeuterated systems in the infrared spectroscopy technique supported a different distribution in the tissue for every system. DMPC systems were primarily at the first layers of the SC, whereas DPPC systems were more widely distributed. Systems with SCHOL had enhanced distribution and penetration of bicellar systems throughout the SC. This journal is © 2012 the Owner Societies
Study of Regulatory T-Cells in Patients with Gastric Malt Lymphoma: Influence on Treatment Response and Outcome
Purpose
FOXP3+ regulatory T cells (Treg) play an essential role in modulating host responses to tumors and infections. The role of these cells in the pathogenesis of MALT lymphomas remains unknown. The aims of the study were to quantify the number of infiltrating FOXP3+ and CD3+ cells in patients with gastric MALT lymphoma at diagnosis and to study kinetics of these cells and CD20+ tumor cells after treatment and during long-term follow-up.
Methods
FOXP3+, CD3+ and CD20+ cells were analyzed by immunohistochemistry and the number of cells was quantified using a micrometric ocular. Samples of 35 patients with gastric MALT lymphoma at diagnosis and after treatment were included. Diagnostic samples were compared to 19 cases of chronic gastritis and diffuse large B-cell lymphoma (DLBCL) of the stomach.
Results
The median number of FOXP3+ infiltrating cells was higher (27 cells/cm2) in gastric MALT patients than in DLBCL (10 cells; p = 0.162) but similar to chronic gastritis (20 cells; p = 0.605). No characteristic or specific distribution pattern of infiltrating FOXP3+ cells was found. Gastric MALT lymphoma patients responding to bacterial eradication therapy had higher number of FOXP3+ cells at study entry. Kinetics of both infiltrating FOXP3+ cells and tumor CD20+ cells were strongly dependent on the treatment administered.
Discussion
Gastric MALT lymphomas have a number of Treg cells more similar to chronic gastritis than to DLBCL. Patients with higher number of tumor infiltrating FOXP3+ cells at study entry seem to have better response to antibiotics. Kinetics of Treg and tumor cells are influenced by type of treatmen
Efficiency and usability study of innovative computer-aided transcription strategies for video lecture repositories
[EN] Video lectures are widely used in education to support and complement face-to-face lectures. However, the utility of these audiovisual
assets could be further improved by adding subtitles that can be exploited to incorporate added-value functionalities such as searchability,
accessibility, translatability, note-taking, and discovery of content-related videos, among others. Today, automatic subtitles are
prone to error, and need to be reviewed and post-edited in order to ensure that what students see on-screen are of an acceptable quality.
This work investigates different user interface design strategies for this post-editing task to discover the best way to incorporate automatic
transcription technologies into large educational video repositories. Our three-phase study involved lecturers from the Universitat
Polite`cnica de Vale`ncia (UPV) with videos available on the poliMedia video lecture repository, which is currently over 10,000 video
objects. Simply by conventional post-editing automatic transcriptions users almost reduced to half the time that would require to generate
the transcription from scratch. As expected, this study revealed that the time spent by lecturers reviewing automatic transcriptions
correlated directly with the accuracy of said transcriptions. However, it is also shown that the average time required to perform each
individual editing operation could be precisely derived and could be applied in the definition of a user model. In addition, the second
phase of this study presents a transcription review strategy based on confidence measures (CM) and compares it to the conventional
post-editing strategy. Finally, a third strategy resulting from the combination of that based on CM with massive adaptation techniques
for automatic speech recognition (ASR), achieved to improve the transcription review efficiency in comparison with the two aforementioned
strategies.
2015 Elsevier B.V. All rights reserved.The research leading to these results has received funding from the European Union Seventh Framework Programme (FP7/2007-2013) under Grant agreement no. 287755 (transLectures) and ICT Policy Support Programme (ICT PSP/2007-2013) as part of the Competitiveness and Innovation Framework Programme (CIP) under Grant agreement no. 621030 (EMMA), and the Spanish MINECO Active2Trans (TIN2012-31723) research project.Valor MirĂł, JD.; Silvestre CerdĂ , JA.; Civera Saiz, J.; TurrĂł Ribalta, C.; Juan CĂscar, A. (2015). Efficiency and usability study of innovative computer-aided transcription strategies for video lecture repositories. Speech Communication. 74:65-75. https://doi.org/10.1016/j.specom.2015.09.006S65757
Interactive handwriting recognition with limited user effort
The final publication is available at Springer via http://dx.doi.org/10.1007/s10032-013-0204-5[EN] Transcription of handwritten text in (old) documents is an important, time-consuming task for digital libraries. Although post-editing automatic recognition of handwritten text is feasible, it is not clearly better than simply ignoring it and transcribing the document from scratch. A more effective approach is to follow an interactive approach in which both the system is guided by the user, and the user is assisted by the system to complete the transcription task as efficiently as possible. Nevertheless, in some applications,
the user effort available to transcribe documents is limited and fully supervision of the system output is not realistic. To circumvent these problems, we propose a novel interactive approach which efficiently employs user effort to transcribe a document by improving three different aspects. Firstly, the system employs a limited amount of effort to solely supervise recognised words that are likely to be incorrect. Thus, user effort is efficiently focused on the supervision of words for which the system is not confident enough. Secondly, it refines the initial transcription provided to the user by recomputing it constrained to user supervisions. In this way, incorrect words in unsupervised parts can be automatically amended without user supervision. Finally, it improves the underlying system models by retraining the system from partially supervised transcriptions. In order to prove these statements, empirical results are presented on two real databases showing that the proposed approach can notably reduce user effort in the transcription of handwritten text in (old) documents.The research leading to these results has received funding from the European Union Seventh Framework Programme (FP7/2007-2013) under Grant Agreement No 287755 (transLectures). Also supported by the Spanish Government (MICINN, MITyC, "Plan E", under Grants MIPRCV "Consolider Ingenio 2010", MITTRAL (TIN2009-14633-C03-01), erudito.com (TSI-020110-2009-439), iTrans2 (TIN2009-14511), and FPU (AP2007-02867), and the Generalitat Valenciana (Grants Prometeo/2009/014 and GV/2010/067).Serrano Martinez Santos, N.; GimĂ©nez Pastor, A.; Civera Saiz, J.; Sanchis Navarro, JA.; Juan CĂscar, A. (2014). Interactive handwriting recognition with limited user effort. 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AFA-steels for Lead alloy cooled nuclear reactors – an overview of the European activities in the GEMMA project
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