Revista Jurídica Digital UANDES
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Text Mining Workflows for Indexing Archives with Automatically Extracted Semantic Metadata
No full textWith the vast amounts of textual data that many digital libraries hold, finding information relevant to users has become a challenge. The unstructured and ambiguous nature of natural language in which documents are written, poses a barrier to the accessibility and discovery of information. This can be alleviated by indexing documents with semantic metadata, e.g., by tagging them with terms that could indicate their “aboutness”. As manually indexing these documents is impracticable, automatic tools capable of generating semantic metadata and building search indexes have become attractive solutions. In this tutorial, we demonstrate how digital library developers and managers can use the Argo text mining platform to develop their own customised, modular workflows for automatic semantic metadata generation and search index construction. In this way, we are providing digital library practitioners with the necessary technical know-how on building semantic search indexes without any programming effort, owing to Argo’s graphical interface for workflow construction and execution. We believe that this in turn will allow various digital libraries to build search systems that will enable their users to find and discover information of interest more efficiently and accurately
The Role of Nonheme Transition Metal-Oxo, -Peroxo and -Superoxo Intermediates in Enzyme Catalysis and Reactions of Bio-Inspired Complexes.
No full textTransition metals are common co-factors in enzymes and enable catalysis to take place via reaction barriers that are accessible at room temperature. Oxygen activating metalloenzymes are versatile species in Nature involved in vital processes ranging from biodegradation to biosynthesis. Since oxygen activating intermediates are not readily amenable to experimental study, research has started to focus on biomimetic model systems that have the active site coordination sphere and structural features, but react in solution. In our research group, we have been involved in computational modeling of heme and nonheme iron dioxygenases as well as biomimetic models of these complexes. In this contribution an overview is given on recent results of the characterization and reactivity patterns of metal-oxo, metal-peroxo and metal-superoxo complexes. In particular, in recent studies attempts were made to trap and characterize the short-lived oxygen bound intermediate in the catalytic cycle of cysteine dioxygenase. Many suggested structures could be ruled out by theoretical considerations, yet these also provided suggestions of possible candidates for the experimentally observed spectra. In addition, we review recent studies on the nonheme iron(III)-hydroperoxo species and how its reactivity patterns with arenes are dramatically different from those found for heme iron(III)-hydroperoxo species. The final two projects show a series of computational studies on manganese(V)-oxo and side-on manganese(III)-peroxo moieties that identify a unique spin state reactivity pattern with a surprising product distribution.<br/
All About Image: Development of Visual Literacy through American Dating Apps
No full textKatz, R. (2017) “All About Image: Development of Visual Literacy through American Dating Apps.” In: Benedek, A. and Veszelszki, A. (eds.) Visual Learning Vol. 7. Frankfurt: Peter Lang. pp. 131-140
Moechtest du mit mir ins Schwimmbad gehen?:Erfassung kommunikativ-pragmatischer Kompetenzen bei kindlicher Aphasie mit dem Szenario
No full textKommunikativ-pragmatische Einschränkungen von Kindern, die an einer Aphasie leiden, sind mit derzeit verfügbaren Testinstrumenten kaum erfassbar. Dies birgt die Gefahr, Langzeitfolgen im Bereich kommunikativer Fähigkeiten und sozialer Teilhabe zu übersehen. Der 2015 entwickelte Szenario-Kids (Plum et al. 2015) bietet die Möglichkeit, Einschränkungen multimodaler Kommunikationsfähigkeiten von 8- bis 15-jährigen Schulkindern und Jugendlichen in Alltagssituationen zu erfassen, und ermöglicht erstmalig die Chance einer partizipationsorientierten Diagnostik. Eine erste Erprobung des Verfahrens mit 22 sprachgesunden Kindern und 4 Kindern mit Aphasie erbrachte zufriedenstellende vorläufige Gütekriterien. Vor allem für schwer betroffene Kinder scheint der Szenario-Kids ein geeignetes Testinstrument zur Erfassung von Einschränkungen kommunikativer Fähigkeiten, zur Erstellung eines kommunikativen Leistungsprofils sowie, darauf aufbauend, Grundlage der partizipations-orientierten Therapieplanung zu sein
Happiness for Project Managers: Framework and empirical analysis
No full textIn the past decade, organisations and governments have become increasingly interested in measuring how people feel, such as 'Happy Planet Index', 'the Well-Being index' and 'Gross National Happiness'. Indeed, practitioners and researchers have found that happiness, subjective well-being, is a strong predictor of various work outcomes including job performance, employee retention, workplace accidents, absenteeism, customer engagement, and profitability. To improve the levels of happiness, models were developed to examine antecedents of happiness; however, very few have focused on studying project managers (PMs), who play important roles in driving project success in the sector like construction. This study addresses this limitation by investigating the relationships among organisational factors, personal resources, and PM levels of happiness. Self-reported data was collected from 227 project management professionals, and was analysed using structural equation modelling. The results suggested a seven-factor PMs’ happiness model. In particular, the mediating role of personal growth, positive work relationships, and meaningful work in the relationship between work environment and happiness at work was supported. In addition, work environment and meaningful work were found to be strong predictors of PM's happiness
Planck data versus large scale structure:Methods to quantify discordance
No full textDiscordance in the Λ cold dark matter cosmological model can be seen by comparing parameters constrained by cosmic microwave background (CMB) measurements to those inferred by probes of large scale structure. Recent improvements in observations, including final data releases from both Planck and SDSS-III BOSS, as well as improved astrophysical uncertainty analysis of CFHTLenS, allows for an update in the quantification of any tension between large and small scales. This paper is intended, primarily, as a discussion on the quantifications of discordance when comparing the parameter constraints of a model when given two different data sets. We consider Kullback-Leibler divergence, comparison of Bayesian evidences and other statistics which are sensitive to the mean, variance and shape of the distributions. However, as a byproduct, we present an update to the similar analysis in [R. A. Battye, T. Charnock, and A. Moss, Phys. Rev. D 91, 103508 (2015)PRVDAQ1550-799810.1103/PhysRevD.91.103508], where we find that, considering new data and treatment of priors, the constraints from the CMB and from a combination of large scale structure (LSS) probes are in greater agreement and any tension only persists to a minor degree. In particular, we find the parameter constraints from the combination of LSS probes which are most discrepant with the Planck2015+Pol+BAO parameter distributions can be quantified at a ∼2.55σ tension using the method introduced in [R. A. Battye, T. Charnock, and A. Moss, Phys. Rev. D 91, 103508 (2015)PRVDAQ1550-799810.1103/PhysRevD.91.103508]. If instead we use the distributions constrained by the combination of LSS probes which are in greatest agreement with those from Planck2015+Pol+BAO this tension is only 0.76σ.</p
Local and global dynamics of multi-resolved polymer chains:Effects of the interactions atoms-beads on the dynamic of the chains
No full textWe present a thorough analysis of the dynamic behaviour of hybrid atomistic/coarse-grained models of polymer melts. While structural properties are well preserved in a dual-resolved model, we show how the dynamic of the chains can be influenced by the simultaneous presence of atoms and beads. We show that despite the polymer chains are long enough to exhibit reptation, the corresponding CG model is unable to capture the expected subdiffusive regimes and seems to still follow the Rouse dynamics. The introduction of atoms in the chain restores the correct dynamic regime, and the dynamics of hybrid systems becomes comparable to that of the atomistic dynamics as the atoms/beads ratio is increased
