2,294 research outputs found
The story of Prosenjit Poddar
No full textThe concept of "Tarasoff duty" is familiar to mental health professionals. Entwined with the name of Tarasoff, is that of Prosenjit Poddar, the other important character in the story which led to the courts giving directions for mental health professionals with regard to their duty of warn. Prosenjit Poddar killed Tatiana Tarasoff when his advances toward her were rebuffed. However, the court ruled that the mental health professional who was treating Poddar and was in knowledge of his intentions to harm Tarasoff, did not take adequate measures to warn the potential victim. This led to courts laying statutes for warning the potential victims by mental health professionals when their clients disclose such threats. However, the ruling has been a matter of debate about when to take any threat seriously and how to tread cautiously given the therapist-client privilege. The case of Prosenjit Poddar throws light on complex issues related to balancing confidentiality and potential harm to others
Praon hyperomyzus Saha, Poddar, Das, Agarwala and Raychaudhuri
No full text103. Praon hyperomyzus Saha, Poddar, Das, Agarwala and Raychaudhuri Praon hyperomyzus Saha, Poddar, Das, Agarwala and Raychaudhuri, 1982: 1-12. Host. Hyperomyzus carduellinus on Emilia sonchifolia (Saha et al. 1982). Distribution. Himachal Pradesh (Saha et al. 1982).Published as part of Akhtar, Mir Samim, Dey, Debjani & Usmani, Mohd. Kamil, 2011, A catalogue of aphid parasitoids (Hymenoptera: Braconidae: Aphidiinae) from India, pp. 1-31 in Insecta Mundi 2011 (151) on page 19, DOI: 10.5281/zenodo.453156
#nowplaying-rs
No full text<p>The nowplaying-rs dataset features context- and content features of listening events. It contains 11.6 million music listening events of 139K users and 346K tracks collected from Twitter. The dataset comes with a rich set of item content features and user context features, as well as timestamps of the listening events. Moreover, some of the user context features imply the cultural origin of the users, and some others - like hashtags - give clues to the emotional state of a user underlying a listening event.</p>
<p>The dataset contains three files:</p>
<ul>
<li>user_track_hashtag_timestamp.csv contains basic information about each listening event. For each listening event, we provide an id, the user_id, track_id, hashtag, created_at </li>
<li>context_content_features.csv: contains all context and content features. For each listening event, we provide the id of the event, user_id, track_id, artist_id, content features regarding the track mentioned in the event (instrumentalness, liveness, speechiness, danceability, valence, loudness, tempo, acousticness, energy, mode, key) and context features regarding the listening event (coordinates (as geoJSON), place (as geoJSON), geo (as geoJSON), tweet_language, created_at, user_lang, time_zone, entities contained in the tweet).</li>
<li>sentiment_values.csv contains sentiment information for hashtags. It contains the hashtag itself and the sentiment values gathered via four different sentiment dictionaries: AFINN, Opinion Lexicon, Sentistrength Lexicon and vader. For each of these dictionaries we list the minimum, maximum, sum and average of all sentiments of the tokens of the hashtag (if available, else we list empty values). However, as most hashtags only consist of a single token, these values are equal in most cases. Please note that the lexica are rather diverse and therefore, are able to resolve very different terms against a score. Hence, the resulting csv is rather sparse. The file contains the following comma-separated values: <hashtag, vader_min, vader_max, vader_sum,vader_avg, afinn_min, afinn_max, afinn_sum, afinn_avg, ol_min, ol_max, ol_sum, ol_avg, ss_min, ss_max, ss_sum, ss_avg >, where we abbreviate all scores gathered over the Opinion Lexicon with the prefix 'ol'. Similarly, 'ss' stands for SentiStrength. </li>
</ul>
<p>Please note that user_track_hashtag_timestamp.csv and context_content_features.csv partly provide the same features. We deliberately chose to do so to be able to provide useable files that do not have to be matched and joined with each other to perform e.g., simple recommendation tasks.</p>
<p>Please also find the training and test-splits for the dataset in this repo. Also, Asmita provides prototypical implementations of a context-aware recommender system based on the dataset at https://github.com/asmitapoddar/nowplaying-RS-Music-Reco-FM.</p>
<p><br>
If you make use of this dataset, please cite the following paper where we describe and experiment with the dataset:</p>
<p>@inproceedings{smc18,<br>
title = {#nowplaying-RS: A New Benchmark Dataset for Building Context-Aware Music Recommender Systems},<br>
author = {Asmita Poddar and Eva Zangerle and Yi-Hsuan Yang},<br>
url = {http://mac.citi.sinica.edu.tw/~yang/pub/poddar18smc.pdf},<br>
year = {2018},<br>
date = {2018-07-04},<br>
booktitle = {Proceedings of the 15th Sound & Music Computing Conference},<br>
address = {Limassol, Cyprus},<br>
note = {code at https://github.com/asmitapoddar/nowplaying-RS-Music-Reco-FM},<br>
tppubtype = {inproceedings}<br>
}</p>
ENDOGENOUS TIMING IN A MIXED DUOPOLY AND PRIVATE DUOPOLY -'CAPACITY-THEN-QUANTITY' GAME: THE LINEAR DEMAND CASE *
No full textWe consider a game of endogenous timing of sequential choice of capacity and quantity with observable delay in a mixed duopoly and a private duopoly. In mixed duopoly, we find that a simultaneous play at the capacity stage or at the quantity stage can never be supported as subgame perfect Nash equilibrium (SPNE); whereas a simultaneous play at each stage turns out to be the unique SPNE in a private duopoly. In mixed duopoly there is multiplicity of equilibria and all SPNEs require sequentiality at the capacity as well as quantity stage. Copyright 2009 The Authors. Journal compilation 2009 Blackwell Publishing Ltd/University of Adelaide and Flinders University.
Electrorheology of a dilute emulsion of surfactant-covered drops
No full textWe investigate the effects of surfactant coating on a deformable viscous drop under the combined action of shear flow and a uniform electric field. Employing a comprehensive three-dimensional approach, we analyse the non-Newtonian shearing response of the bulk emulsion in the dilute suspension regime. Our results reveal that the location of the peak surfactant accumulation on the drop surface may get shifted from the plane of shear to a plane orthogonal to it, depending on the tilt angle of the applied electric field and strength of the electrical stresses relative to their hydrodynamic counterparts. The surfactant non-uniformity creates significant alterations in the flow perturbation around the drop, triggering modulations in the bulk shear viscosity. Overall, the shear-thinning or shear-thickening behaviour of the emulsion appears to be greatly influenced by the interplay of surface charge convection and Marangoni stresses. We show that the balance between electrical and hydrodynamic stresses renders a vanishing surface tension gradient on the drop surface for some specific shear rates, rendering negligible alterations in the bulk viscosity. This critical condition largely depends on the electrical permittivity and conductivity ratios of the two fluids and orientation of the applied electric field. Also, the physical mechanisms of charge convection and surface deformation play their roles in determining this critical shear rate. As a consequence, we obtain new discriminating factors, involving electrical property ratios and the electric field configuration, which govern the same. Consequently, the surfactant-induced enhancement or attenuation of the bulk emulsion viscosity depends on the electrical conductivity and permittivity ratios. The concerned description of the drop-level flow physics and its connection to the bulk rheology of a dilute emulsion may provide a fundamental understanding of a more complex emulsion system encountered in industrial practice
viaWidgets - Application Examples
No full textThis repository includes supplemental materials for the IEEE VIS 2025 - Input Visualization Workshop submitted paper "Toward a Categorization of viaWidgets: Inline Widgets Leveraging Visualization for Interaction Augmentation" (Madhav Poddar, Fabian Beck
En jämförande studie om uppbackningar i finlandssvenska och sverigesvenska poddar
No full textI avhandlingen jämför jag uppbackningar i sverigesvenska och finlandssvenska poddar. Svenska uppbackningar har studerats bland annat av Maria Green-Vänttinen (1993, 2001), Susanna Holmström (2019), Liisa Hakanen (2001) och forskarna i det stora forskningsprojektet Interaktion och variation i pluricentriska språk – Kommunikativa mönster i sverigesvenska och finlandssvenska (IVIP 2013–2020). Före IVIP har man inte studerat svenska uppbackningar ur ett pluricentriskt perspektiv. Eftersom uppbackningar studeras i handledningssamtal inom IVIP vill jag bidra med ny kunskap och undersöka ämnet ur ett annat perspektiv. Därför är infallsvinkeln i poddar. Genom det pluricentriska perspektivet bidrar denna studie till variationspragmatiken.
Materialet i den här studien består av tiominuters avsnitt från sex olika poddar, tre från Sverige och tre från Finland. Poddarna har liknande teman och åldersfördelningen mellan deltagarna är jämn. Det finns både yngre och medelålders talare från båda länderna. Könsfördelningen är inte helt jämn, eftersom två tredjedelar av deltagarna är kvinnor och bara en tredjedel män. Poddarna är ljudinspelningar och de är transkriberade. Transkriptionerna är gjorda med tanke på innehållet men också bland annat överlappande tal och pauser har markerats.
Den allra vanligaste uppbackningen i båda länderna är mm. Därefter kommer olika former av ja, t.ex. ja, jå och a. Jå förekommer endast i Finland medan a bara förekommer i materialet från Sverige. Standardformen ja är mer populär i finlandssvenskan där denna form uppgår till 75 % av alla belägg på olika ja-former. I Sverige är situationen den motsatta. Standarformen ja används endast i 24 % av fallen medan det sverigespecifika a dominerar och används i 76 % av fallen. Kvinnor uppbackar mest och speciellt när båda samtalsdeltagare är av samma kön. När samtalsdeltagarna är av olika kön förekommer det minst uppbackningar i samtalet
Pulsar Kick: Status and Perspective
No full textThe high speeds seen in rapidly rotating pulsars after supernova explosions present a longstanding puzzle in astrophysics. Numerous theories have been suggested over the years to explain this sudden “kick” imparted to the neutron star, yet each comes with its own set of challenges and limitations. Key explanations for pulsar kicks include hydrodynamic instabilities in supernovae, anisotropic neutrino emission, asymmetries in the magnetic field, binary system disruption, and physics beyond the Standard Model. Unraveling the origins of pulsar kicks not only enhances our understanding of supernova mechanisms but also opens up possibilities for exploring new physics. In this brief review, we will introduce pulsar kicks, examine the leading hypotheses, and explore future directions for this intriguing phenomenon
Genomics of Acinetobacter baumannii iron uptake
No full textIron is essential for growth in most bacteria due to its redox activity and its role in essential metabolic reactions; it is a cofactor for many bacterial enzymes. The bacterium Acinetobacter baumannii is a multidrug-resistant nosocomial pathogen. A. baumannii responds to low iron availability imposed by the host through the exploitation of multiple iron-acquisition strategies, which are likely to deliver iron to the cell under a variety of environmental conditions, including human and animal infection. To date, six different gene clusters for active iron uptake have been described in A. baumannii , encoding protein systems involved in (i) ferrous iron uptake (feo); (ii) haem uptake (hemT and hemO); and (iii) synthesis and transport of the baumannoferrin(s) (bfn), acinetobactin (bas/bau) and fimsbactin(s) (fbs) siderophores. Here we describe the structure, distribution and phylogeny of iron-uptake gene clusters among >1000 genotypically diverse A. baumannii isolates, showing that feo, hemT, bfn and bas/bau clusters are very prevalent across the dataset, whereas the additional haem-uptake system hemO is only present in a portion of the dataset and the fbs gene cluster is very rare. Since the expression of multiple iron-uptake clusters can be linked to virulence, the presence of the additional haem-uptake system hemO may have contributed to the success of some A. baumannii clones
A Low SWaP-C Radar Altimeter Transceiver Design for Small Satellites
No full textThis paper discusses the design details of a high resolution, low "Size, Weight, Power and Cost" (SWaP-C) radar altimeter (RA) system. Operating frequency of the radar is chosen within the Ka-band to achieve the desired size and weight requirements, that are highly demanded for the small satellite missions in a cost-efficient way. We propose a system design such that, an intended radar altimeter can be built by using the Commercial off the Shelf (COTS) components. The simulation results show that the proposed RA has high potentiality for realization.Accepted author manuscriptMicrowave Sensing, Signals & SystemsAtmospheric Remote SensingMathematical Geodesy and Positionin
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