101,266 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
monitoring and analysis of suspended sediment transport in the Drava River
No full textUčinkovito upravljanje premeščanja lebdečih plavin v vodotokih je ključno za oblikovanje trajnostnih strategij razvoja vodnih virov in ima osrednjo vlogo pri obvladovanju poplavne ogroženosti, optimizaciji hidroenergetske rabe in ohranjanju rečne morfologije. V študiji je podana analiza dinamike lebdečih plavin v slovenskem delu reke Drave, ki temelji na obsežnem naboru empiričnih podatkov, pridobljenih z večletnimi meritvami na več merilnih mestih. Transport lebdečih plavin je dinamičen proces, ki je odvisen od hidravličnih značilnosti toka, sezonskih sprememb virov plavin ter antropogenih vplivov na rečno strugo. Akumulacija plavin v zadrževalnikih in strugi vpliva na hidrološko ravnovesje, saj zmanjšuje infiltracijo vode v podzemne vodonosnike in spreminja režim sedimentacije. Analiza visokovodnega dogodka iz leta 2018, izvedena z vidika odvisnosti koncentracije lebdečih plavin od pretoka, omogoča poglobljen vpogled v izvor in transport plavin na merjenem odseku reke Drave. V Sloveniji se lebdeče plavine v reki Dravi upravljajo pretežno s konvencionalnimi metodami, kot sta sedimentacija in ponovna vključitev v rečne ter vodne ekosisteme. V prispevku so predlagane dodatne dolgoročne strategije celostnega upravljanja plavin, ki bi prispevale k učinkovitejšemu gospodarjenju z vodnimi viri, optimizaciji hidroenergetskih sistemov ter zmanjšanju negativnih ekoloških posledic.The transport of suspended sediments is a dynamic process that is influenced by the hydraulic properties of the river, the seasonal fluctuations of sediment sources and anthropogenic influences on the riverbed. The accumulation of sediments in reservoirs and riverbeds affects the water balance by reducing water infiltration into aquifers and changing the sedimentation regime. The analysis of the 2018 flood event, which was carried out from the point of view of the dependence of suspended sediment concentration on discharge, provides a detailed insight into the origin and transport of sediments in the monitored section of the Drava River. In Slovenia, suspended sediment management in the Drava River is primarily based on conventional methods such as sedimentation and reintegration into the river and aquatic ecosystems. This study proposes additional long-term strategies for integrated sediment management that could increase the efficiency of water resource management, optimize hydropower systems and mitigate adverse ecological impacts
monitoring and analysis of suspended sediment transport in the Drava River
No full textUčinkovito upravljanje premeščanja lebdečih plavin v vodotokih je ključno za oblikovanje trajnostnih strategij razvoja vodnih virov in ima osrednjo vlogo pri obvladovanju poplavne ogroženosti, optimizaciji hidroenergetske rabe in ohranjanju rečne morfologije. V študiji je podana analiza dinamike lebdečih plavin v slovenskem delu reke Drave, ki temelji na obsežnem naboru empiričnih podatkov, pridobljenih z večletnimi meritvami na več merilnih mestih. Transport lebdečih plavin je dinamičen proces, ki je odvisen od hidravličnih značilnosti toka, sezonskih sprememb virov plavin ter antropogenih vplivov na rečno strugo. Akumulacija plavin v zadrževalnikih in strugi vpliva na hidrološko ravnovesje, saj zmanjšuje infiltracijo vode v podzemne vodonosnike in spreminja režim sedimentacije. Analiza visokovodnega dogodka iz leta 2018, izvedena z vidika odvisnosti koncentracije lebdečih plavin od pretoka, omogoča poglobljen vpogled v izvor in transport plavin na merjenem odseku reke Drave. V Sloveniji se lebdeče plavine v reki Dravi upravljajo pretežno s konvencionalnimi metodami, kot sta sedimentacija in ponovna vključitev v rečne ter vodne ekosisteme. V prispevku so predlagane dodatne dolgoročne strategije celostnega upravljanja plavin, ki bi prispevale k učinkovitejšemu gospodarjenju z vodnimi viri, optimizaciji hidroenergetskih sistemov ter zmanjšanju negativnih ekoloških posledic.The transport of suspended sediments is a dynamic process that is influenced by the hydraulic properties of the river, the seasonal fluctuations of sediment sources and anthropogenic influences on the riverbed. The accumulation of sediments in reservoirs and riverbeds affects the water balance by reducing water infiltration into aquifers and changing the sedimentation regime. The analysis of the 2018 flood event, which was carried out from the point of view of the dependence of suspended sediment concentration on discharge, provides a detailed insight into the origin and transport of sediments in the monitored section of the Drava River. In Slovenia, suspended sediment management in the Drava River is primarily based on conventional methods such as sedimentation and reintegration into the river and aquatic ecosystems. This study proposes additional long-term strategies for integrated sediment management that could increase the efficiency of water resource management, optimize hydropower systems and mitigate adverse ecological impacts
Variations on the Author
No full text“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Search for an association between neutrinos and radio-selected blazars with ANTARES
No full textRecently, evidence for an association between high energy neutrinos detected by IceCube and radio-selected blazars has been found by Plavin et al.(2020, 2021). This result was achieved using an all sky complete sample of 3411 blazars selected on their parsec-scale flux density at 8 GHz higher than 150 mJy. We perform a positional correlation analysis using the same sample of radio-selected blazars, with the latest point source sample of neutrinos extracted from the data collected by the ANTARES detector between January 29, 2007 and February 28, 2020. Preliminary results are presented and discussed
Mean flow generation by Görtler Vortices in a rotating annulus with librating side walls
No full textLongitudinal libration of the cylinder side walls of a rotating annulus in the supercritical regime induces a centrifugally unstable Stokes boundary layer which generates Görtler vortices only in a portion of a libration cycle. We show for the first time that these vortices propagate into the fluid bulk and generate an azimuthal mean flow which is retrograde (prograde) over the outer (inner) cylinder side wall. Direct numerical simulations (DNS) are carried out and Reynolds-averaged equations and kinetic energy budget of mean and fluctuating flow are used as diagnostic equations to discuss the generation mechanism and scaling behavior of the azimuthal mean flow in the fluid bulk
Multivariate Polarimetric Bistatic Clutter Statistical Analysis
No full textThis paper deals with the analysis of simultaneously collected co- and cross-polarized bistatic sea-clutter returns with special emphasis on their representation as a Spherically Invari-ant Random Process (SIRP). The study is conducted by using appropriate testing procedures involving the complex envelope of the measured data that provide both first- and higher-order compatibility conditions. The results highlight that the SIRP model is a good candidate for the representation of bistatic coherent clutter, and usually the coherence time of the SIRP texture is longer than that in the monostatic case.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Microwave Sensing, Signals & System
A Guiding Vector-Field algorithm for path-following control of nonholonomic mobile robots
No full textIn this paper, we propose an algorithm for path-following control of the nonholonomic mobile robot based on the idea of the guiding vector field (GVF). The desired path may be an arbitrary smooth curve in its implicit form, that is, a level set of a predefined smooth function. Using this function and the robot's kinematic model, we design a GVF, whose integral curves converge to the trajectory. A nonlinear motion controller is then proposed, which steers the robot along such an integral curve, bringing it to the desired path. We establish global convergence conditions for our algorithm and demonstrate its applicability and performance by experiments with wheeled robots.Accepted Author ManuscriptTeam Tamas Keviczk
Actor as a co-author
No full textDiplomová práce se zabývá tématem herce jako spoluautora, možností autorského vkladu herce v inscenaci a hranicemi tohoto autorství. Celá problematika diplomové práce se vztahuje k autorskému magisterskému projektu Proměním se v zajíce se zármutkem a obrovskou opatrností. Obsahem první části diplomové práce je schopnost kolektivní spolupráce skupiny Gob Squad. V popisu jejich práce reflektuji své tvůrčí zkušenosti. Ve druhé části se zaměřuji na postup Anny Klimešové a kolektivu u zkoušení inscenace Proměním se v zajíce se zármutkem a obrovskou opatrností. Třetí část řeší téma herce jako spoluautora v souvislosti s výukou na katedře alternativního a loutkového divadla a jejího vlivu na mě, jako na herce a tvůrce.This master thesis focuses on the actor as a co-author, the possibilities of actor’s involvement as an author in the play and boundaries of the authorship. The research problem of the master thesis is tied to the master project I shall go into a hare with sorrow and such mickle care. The first part of the master thesis is focused on the collective ability of cooperation of the God Squad group. In their work I reflect my creative experiences. In the second part I focus on the progress of Anna Klimesova and the group while rehearsing the play I shall go into a hare with sorrow and such mickle care. The topic of the third part is the actor as a co-author in connection to learning on the department of alternative and puppet theatre and its influence on me as an actor and a creator
Microbial enrichment culture responsible for the complete oxidative biodegradation of 3‑Amino-1,2,4-triazol-5-one (ATO), the reduced daughter product of the insensitive munitions compound 3‑Nitro-1,2,4-triazol-5-one (NTO)
No full text3-Nitro-1,2,4-triazol-5-one (NTO) is one of the main ingredients of many insensitive munitions, which are being used as replacements for conventional explosives. As its use becomes widespread, more research is needed to assess its environmental fate. Previous studies have shown that NTO is biologically reduced to 3-amino-1,2,4-triazol-5-one (ATO). However, the final degradation products of ATO are still unknown. We have studied the aerobic degradation of ATO by enrichment cultures derived from the soil. After multiple transfers, ATO degradation was monitored in closed bottles through measurements of inorganic carbon and nitrogen species. The results indicate that the members of the enrichment culture utilize ATO as the sole source of carbon and nitrogen. As ATO was mineralized to CO₂, N₂, and NH₄⁺, microbial growth was observed in the culture. Co-substrates addition did not increase the ATO degradation rate. Quantitative polymerase chain reaction analysis revealed that the organisms that enriched using ATO as carbon and nitrogen source were Terrimonas spp., Ramlibacter-related spp., Mesorhizobium spp., Hydrogenophaga spp., Ralstonia spp., Pseudomonas spp., Ectothiorhodospiraceae, and Sphingopyxis. This is the first study to report the complete mineralization of ATO by soil microorganisms, expanding our understanding of natural attenuation and bioremediation of the explosive NTO.Journal ArticleFinal article publishe
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