Search results for " Library"
showing 10 items of 734 documents
Characterization of two new cuticular genes specifically expressed during the post-ecdysial molting period in Tenebrio molitor
1998
Abstract In a previous study, we have isolated a cDNA, TM-ACP17 , coding for a post-ecdysial adult protein of Tenebrio molitor . After screening of a genomic library with TM-ACP17 , we report isolation and sequencing of TM-ACP17 gene and a new gene, TM-LPCP29 , coding for a larval–pupal protein. These two genes exhibit a common sequence of 15 nucleotides and a characteristic of most cuticular protein genes so far described: an intron interrupting the signal peptide. The deduced aa sequence of TM-LPCP29 exhibits a high percentage of Ala (26.5%) and Val (17.5%) and is highly hydrophobic. In the N-terminal part, the motif VAAPV is repeated ten times. Numerous histidine residues are present in …
Design of Multiresolution Operators Using Statistical Learning Tools: Application to Compression of Signals
2012
Using multiresolution based on Harten's framework [J. Appl. Numer. Math., 12 (1993), pp. 153---192.] we introduce an alternative to construct a prediction operator using Learning statistical theory. This integrates two ideas: generalized wavelets and learning methods, and opens several possibilities in the compressed signal context. We obtain theoretical results which prove that this type of schemes (LMR schemes) are equal to or better than the classical schemes. Finally, we compare traditional methods with the algorithm that we present in this paper.
Los archivos de distrito en Portugal: memoria administrativa, histórica y social
2018
Se presenta un análisis de la evolución histórico-jurídi ca de los Archivos de Distrito (AD) portugueses, como instituciones que asumen la salvaguarda del patrimo nio público-administrativo del país. Para ello se revisa la bibliografía más relevante sobre el tema, así como la documentación histórica, legal y política, describien do su historia desde sus orígenes y los nuevos caminos que se van trazando, en relación con el aumento de la accesibilidad a la documentación que gestionan y a las nuevas estrategias de difusión de la información entre la ciudadanía. Todo ello en el marco de las distintas ini ciativas de modernización administrativa y las nuevas tecnologías disponibles.
proTRAC - a software for probabilistic piRNA cluster detection, visualization and analysis
2012
Abstract Background Throughout the metazoan lineage, typically gonadal expressed Piwi proteins and their guiding piRNAs (~26-32nt in length) form a protective mechanism of RNA interference directed against the propagation of transposable elements (TEs). Most piRNAs are generated from genomic piRNA clusters. Annotation of experimentally obtained piRNAs from small RNA/cDNA-libraries and detection of genomic piRNA clusters are crucial for a thorough understanding of the still enigmatic piRNA pathway, especially in an evolutionary context. Currently, detection of piRNA clusters relies on bioinformatics rather than detection and sequencing of primary piRNA cluster transcripts and the stringency …
Utilisation du numérique par les enseignants à l’université : description et analyse des facteurs explicatifs
2019
Dans cet article, nous nous intéressons à la nature des technologies de l’information et de la communication (TIC) mobilisées par les enseignants universitaires pour enseigner et aux facteurs explicatifs de cette utilisation. Nous procédons d’abord à un éclairage théorique notamment concernant les concepts de « TIC » et d’« utilisation ». Puis, à l’appui des données recueillies en mai 2016 auprès de 248 enseignants d’une université française, nous montrons que les TIC mobilisées par les enseignants à l’intérieur, mais aussi en dehors des heures de cours, sont plutôt d’ordre générique en opposition aux technologies plus sophistiquées. Les enseignants utilisent par ailleurs davantage les TIC …
The public sector's roles in the sharing economy and the implications for public values
2019
Abstract Motivated by the growing significance of the sharing economy, we discuss the roles the public sector may play within the sharing economy and the corresponding implications for public values. The sharing economy represents a transformative agent for the public sector within the current landscape of digital transformation. While the public sector has so far acted mainly as a regulatory body in the sharing economy, we here discuss implications for other roles the public sector may take on, including the roles of customer, service provider, and platform provider. Framed within the context of the public value ideals (professional, efficiency, service, and engagement), we examine the opp…
Digital transparency and Web 2.0 in Spanish city councils
2016
Abstract The purpose of this study is to provide a Web 2.0 Disclosure Index to measure the Web 2.0 presence of Spanish city councils and the information disclosed by them on these media, and to test whether the use of Web 2.0 tools and social media by local governments improve their Web 1.0 digital transparency. We have structured the Web 2.0 Index as the sum of three partial indexes, referred to presence, the content and the interactivity of the Web, and we have estimated these indexes by a content analysis of the city council's websites. We find that the use of Web 2.0 tools has an essentially ornamental focus, and thus it is necessary to increase the content disclosed, especially at the …
Suffix array and Lyndon factorization of a text
2014
Abstract The main goal of this paper is to highlight the relationship between the suffix array of a text and its Lyndon factorization. It is proved in [15] that one can obtain the Lyndon factorization of a text from its suffix array. Conversely, here we show a new method for constructing the suffix array of a text that takes advantage of its Lyndon factorization. The surprising consequence of our results is that, in order to construct the suffix array, the local suffixes inside each Lyndon factor can be separately processed, allowing different implementative scenarios, such as online, external and internal memory, or parallel implementations. Based on our results, the algorithm that we prop…
Los trabajos sobre negociación colectiva publicados en revistas españolas antes de 1995 e incluidos en la base de datos ISOC. Acercamiento biliométri…
1997
Legal literature is one of the areas most neglected by bibliometric studies, both in Spa in and abroad. Within this context, the general aim of this note is to check the utility of national databases in the retrieval and overview of the legal literature published in Spanish journals. 447 papers on collective bargaining and allied subjects published before 1995 and included in ISOC database have been retrieved. Using a computer file of these papers, the distributions by years, number of authors per paper, institutions of origin, journals and specific subjects was analysed from a bibliometric approach. As a case study, distributions of the publications which have been used in a research paper…
The silicatein propeptide acts as inhibitor/modulator of self-organization during spicule axial filament formation.
2013
Silicateins are crucial enzymes that are involved in formation of the inorganic biosilica scaffold of the spicular skeleton of siliceous sponges. We show that silicatein acquires its structure-guiding and enzymatically active state by processing of silicatein from pro-silicatein to the mature enzyme. A recombinant propeptide (PROP) of silicatein from the siliceous demosponge Suberites domuncula was prepared, and antibodies were raised against the peptide. In sponge tissue, these antibodies reacted with both surface structures and the central region of the spicules. Using phage display expression, spicule-binding 12-mer peptides were identified that are rich in histidine residues. In the pre…