359,951 research outputs found
PETER PAN
No full textThe audio collection brings the Peter Pan story in seventeen chapters which follow the original text. To practice the trivial English students skills, such as listening, text comprehension and oral skills. The audio also helps to improve the students vocabulary and to increase the knowledge in literature
PETER PAN
No full textThe audio collection brings the Peter Pan story in seventeen chapters which follow the original text. To practice the trivial English students skills, such as listening, text comprehension and oral skills. The audio also helps to improve the students vocabulary and to increase the knowledge in literature
Overview of the Author Profiling Task at PAN 2013
Full text link[EN] This overview presents the framework and results for the Author Profiling
task at PAN 2013. We describe in detail the corpus and its characteristics,
and the evaluation framework we used to measure the participants performance to
solve the problem of identifying age and gender from anonymous texts. Finally,
the approaches of the 21 participants and their results are described.The author profiling task @PAN-2013 was an activity of the WIQ-EI IRSES project (Grant No. 269180) within the FP 7 Marie Curie People Framework of the European Commission. We want to thank the Forensic Lab of the Universitat Pompeu Fabra Barcelona for sponsoring the award for the winner team. The work of the first author was partially funded by Autoritas Consulting SA and by Ministerio de Economía y Competitividad de España under grant ECOPORTUNITY IPT-2012-1220-430000. The work of the second author was in the framework the DIANA-APPLICATIONS-Finding Hidden Knowledge in Texts: Applications (TIN2012-38603-C02-01) project, and the VLC/CAMPUS Microcluster on Multimodal Interaction in Intelligent Systems. The work of fifth author was funded in part by the Swiss National Science Foundation (SNF) project "Mining Conversational Content for Topic Modelling and Author Identification (ChatMiner)" under grant number 200021_130208.Rangel, F.; Rosso, P.; Koppel, M.; Stamatatos, E.; Inches, G. (2013). Overview of the Author Profiling Task at PAN 2013. CLEF Conference on Multilingual and Multimodal Information Access Evaluation. 352-365. https://riunet.upv.es/handle/10251/46636S35236
The Great Pan: rebirth of a god in English literature
No full textopenLa tesi si propone di illustrare le caratteristiche e le prerogative del dio Pan nell'antichità, per poi indagare il suo ruolo centrale nella novella 'The story of a Panic' di E. M. Forster e nel romanzo 'The Goat-Foot God' di Dion Fortune, nell'ambito della rinascita novecentesca della figura del dio e del suo culto
The marine biogeochemistry of dissolved organic carbon and dissolved organic nutrients in the Atlantic Ocean
No full textThe marine biogeochemistry of dissolved organic carbon (DOC) has come underincreased scrutiny because of its involvement in the global carbon cycle andconsequently climate change. Dissolved organic nitrogen (DON) and phosphorus(DOP), which have historically been ignored because of their suggested “biologicalunavailability”, have now received greater attention due to their importance in nutrientcycling, particularly in oligotrophic ecosystems. DOM, a byproduct of photosyntheticproduction, has important ecological significance as a substrate that supportsheterotrophic bacterial growth, thereby causing oxygen consumption and regeneratinginorganic nutrients. In the open ocean the net production of DOC is ultimately due tothe decoupling of biological production and consumption processes. Concentrations ofDOM in the surface oceans, therefore, are controlled by both physical and biologicalprocesses. This research investigates the biological factors that control the distributionsof DOC, DON and DOP in surface waters, the importance of DOC degradation tooxygen consumption, the importance of DON and DOP degradation to remineraliseddissolved inorganic nitrogen (DIN) and dissolved inorganic phosphorus (DIP), and theC:N:P stoichiometry of DOM pool in the Atlantic Ocean. Samples were collected on Atlantic Meridional Transects (AMT) cruise 16 and 17, which crossed the southerntemperate region, the southern subtropical gyre, the equatorial region, the northernsubtropical gyre, and the northern temperate region. This work described here wasperformed as a component of the AMT programme.Concentrations of DOC and TDN were determined using a high-temperature catalyticcombustion technique, and TDP concentrations were determined using a UV oxidationmethod. Concentrations of DON and DOP were estimated as the difference betweenthe independent measurements of TDN and TDP. The results showed that the highestDOM concentrations were found in surface (0-30 m) waters, ranging from 70-80 µMDOC, 4.8-6.5 µM DON and 0.2-0.3 µM DOP, and decreased with increasing waterdepth to 45-55 µM DOC, 2.6-4.0 µM DON and 0.04-0.05 µM DOP at 300 m. Thelowest DOM concentrations were observed in the deep (>1000 m) ocean, averaging 44µM DOC, 2.3 µM DON and 0.02 µM DOP. In the upper 300 m, the concentrations ofsemilabile (and labile) DOC decreased by 45-95% from the surface values. DON andDOP were the dominant components of the total dissolved nutrient pools in the upper50 m, accounting for up to 99% and 80% of the TDN and TDP pools, respectively. Inthe upper 300 m, semilabile (and labile) DON and DOP decreased by 50-65% and90-95% from the surface values, respectively.The decoupled correlations between DOC/DON/DOP and chlorophyll-a and rates ofcarbon fixation suggested that phytoplankton biomass and rates of primary productionwere not the important controls of the cumulative DOC, DON and DOP. Zooplanktongrazing was hypothesised to be an important factor in regulating the distributions ofDOC, DON and DOP in surface waters. Poor correlations between DOC/DON/DOPand DIN/DIP suggested that inorganic nutrients were not the significant controls inDOC, DON and DOP distributions. N and P were probably retained mainly in theorganic pool in the surface waters due to a hypothesised insufficient functioning of the microbial degradation. If the vertical migration of zooplankton was significant inbringing new nutrients into the surface waters, strong correlations between dissolvedorganic and inorganic nutrients should not be anticipated. Prochlorococcus spp.abundance was statistically linked with the concentrations of DOC, DON and DOP.The significant correlations may reflect the ability of Prochlorococcus to assimilate thelabile forms of dissolved organic nutrients (including DOC), which may bequantitatively significant in surface waters of the Atlantic Ocean.The C:N, N:P and C:P stoichiometry of the bulk DOM pool deviated from the Redfieldratio of 6:1, 16:1 and 106:1, ranging from 12-18, 20-100 and 300-1400, respectively, inthe upper 300 m, suggesting that the cumulative DOM was rich in C relative to N and P,and N relative to P compared to the Redfield trajectories. The offsets of the C:N:Pstoichiometry relatively to the Redfield ratio were due to nutrient limitations thatimposed on prokaryotic and eukaryotic microbial populations. The C:N:Pstoichiometry of the bulk DOM pool showed an increased trend, with C:N = 12-16,N:P = 20-25, and C:P = 300-350 in the upper 30 m, C:N = 12-18, N:P = 50-100, andC:P = 700-1400 at 300 m, and C:N = 17-24, N:P = 79-132; C:P = 1791-2442 at 1000 m.The differences in the C:N:P stoichiometry of the bulk DOM pool between the upperand deep waters suggested preferential remineralisation of P relative to C and N, and Nrelative to C. A greater remineralisation length scale for DOC relative to DON andDOP produced a long-term, steady flux of C from the surface to the deep ocean.Therefore, CO2 fixed in the upper ocean during planktonic photosynthesis wascontinuously “pumped” into the ocean interior, and stored in the deep ocean up tothousands of years. The C:N, N:P and C:P stoichiometry of the semilabile (and labile)DOM pool generally agreed with the Redfield ratio (C:N = 6; N:P = 16; C:P = 106) inthe upper 30 m. At 100 m C:N ratio was 5-12, C:P ratio was 20-30, and C:P ratio was100-150. At 300 m, C:N ratio was 5-12, N:P ratio was 25-100, and C:P ratio was150-500. The findings suggested that in the upper 300 m, there was no preferential remineralisation between the semilabile (and labile) DOC and DON, however, thesemilabile (and labile) DOP seemed to be preferentially remineralised relative to thesemilabile (and labile) DOC and DON.In the upper thermocline (i.e. above 300 m), DOC degradation was important withrespect to oxygen consumption, contributing to as much as 25% of the apparentoxygen utilization (AOU). The remaining of 75% was attributable to POCdecomposition. However, the AOU contributable to DOC showed a function of latitude,with 15-55% found in the central subtropical Atlantic gyres and 15-25% in theequatorial region. The most likely explanation for the variation of DOC relative toPOC degradation with respect to AOU was the regional variability in the export ofPOC, which was suggested to be highest in the high nutrient regions of the equator andat the poleward margins of the subtropical gyres. As a result, DOC formed animportant contribution to AOU in oligotrophic regions, while POC was the dominantcontrol of AOU in upwelling regions. Some freshly-produced fractions of DON and DOP with turnover times of months toyears were capable of escaping rapid microbial degradation in surface waters andbecame entrained into deep waters via diffusive mixing. Subsequent microbialdegradation of these DON and DOP took place in the thermocline, regeneratinginorganic nutrients. Statistically significant correlations were observed between theDON-to-DIN and DOP-to-DIP relationships. Calculations of the fluxes of dissolvedorganic nutrients relative to inorganic nutrients suggested that in the upper thermocline(i.e. above 300 m), the downward fluxes of DON and DOP contributed to a total of 4%and 5% of the upward fluxes of DIN and DIP, respectively, into the euphotic zone. Theremaining of 95% of the upward dissolved inorganic nutrients fell out of the euphoticzone as particles in order to prevent nutrient accumulation and to maintain nutrientintegrity of the pelagic ecosystem
Overview of the author identification task at PAN 2014
Full text linkThe author identification task at PAN-2014 focuses on author verification. Similar to PAN-2013 we are given a set of documents by the same author along with exactly one document of questioned authorship, and the task is to determine whether the known and the questioned documents are by the same author or not. In comparison to PAN-2013, a significantly larger corpus was built comprising hundreds of documents in four natural languages (Dutch, English, Greek, and Spanish) and four genres (essays, reviews, novels, opinion articles). In addition, more suitable performance measures are used focusing on the accuracy and the confidence of the predictions as well as the ability of the submitted methods to leave some problems unanswered in case there is great uncertainty. To this end, we adopt the c@1 measure, originally proposed for the question answering task. We received 13 software submissions that were evaluated in the TIRA framework. Analytical evaluation results are presented where one language-independent approach serves as a challenging baseline. Moreover, we continue the successful practice of the PAN labs to examine meta-models based on the combination of all submitted systems. Last but not least, we provide statistical significance tests to demonstrate the important differences between the submitted approaches
Natural transformations between T²₁T*M and T*T²₁M
No full textWe determine all natural transformations T²₁T*→ T*T²₁ where . We also give a geometric characterization of the canonical isomorphism ψ₂ defined by Cantrijn et al
PAN-00113319 - iron T-nail
No full textThis find is registered at Portable Antiquities of the Netherlands with number PAN-0011331
PAN-00140361 - iron T-nail
No full textThis find is registered at Portable Antiquities of the Netherlands with number PAN-0014036
Roary : rapid large-scale prokaryote pan genome analysis
No full textThis work was supported by the Wellcome Trust (grant WT 098051).A typical prokaryote population sequencing study can now consist of hundreds or thousands of isolates. Interrogating these datasets can provide detailed insights into the genetic structure of prokaryotic genomes. We introduce Roary, a tool that rapidly builds large-scale pan genomes, identifying the core and accessory genes. Roary makes construction of the pan genome of thousands of prokaryote samples possible on a standard desktop without compromising on the accuracy of results. Using a single CPU Roary can produce a pan genome consisting of 1000 isolates in 4.5 hours using 13 GB of RAM, with further speedups possible using multiple processors.Peer reviewe
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