cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Thermopower enhancement by encapsulating cerium in clathrate cages
Creators: name: Prokofiev, A.
name: Sidorenko, A.
name: Hradil, K.
name: Ikeda, M.
name: Svagera, R.
name: Waas, M.
name: Winkler, H.
name: Neumaier, K.
name: Paschen, S.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The increasing worldwide energy consumption calls for the design of more efficient energy systems. Thermoelectrics could be used to convert waste heat back to useful electric energy if only more efficient materials were available. The ideal thermoelectric material combines high electrical conductivity and thermopower with low thermal conductivity. In this regard, the intermetallic type-I clathrates show promise with their exceedingly low lattice thermal conductivities [1]. Here we report the successful incorporation of cerium as guest atom into the clathrate crystal structure. In many simpler intermetallic compounds, this rare earth element is known to lead, via the Kondo interaction, to strong correlation phenomena including the ocurrence of giant thermopowers at low temperatures [2]. Indeed, we observe a 50% enhancement of the thermopower compared to a rare earth-free reference material. Importantly, this enhancement occurs at high temperatures and we suggest that a `rattling' enhanced Kondo interaction [3] underlies this effect.
description: 6 pages, 4 figures
Teorie della narrazione a confronto.  Presentazione
Creators: name: Sinopoli, Franca
name: Sini, Stefania
Publisher: name: ENTHYMEMA
Year: 2018
Subjects: teoria della letteratura; letteratura comparata; narratologia; romanzo; autore; personaggio

description: Una sintetica contestualizzazione teorica degli interventi presentati al seminario “Teorie della narrazione a confronto” tenutosi all’Università Sapienza di Roma il 14 e 15 febbraio 2018.

In this presentation, the readers will find a short theoretical contextualization of the interventions read on the occasion of the seminar “Teorie della narrazione a confronto”, held at Sapienza University of Rome on 14th and 15th February 2018.
description: ENTHYMEMA, No 22 (2018)
La complessità della narrazione e della narratologia
Creators: name: Pianzola, Federico
Publisher: name: ENTHYMEMA
Year: 2018
Subjects: narrazione; sistema complesso; sequenza narrativa; narratologia cognitivista

description: Negli ultimi cinque anni vi è stata un’attenzione crescente per le teorie della complessità da parte di narratologi. La recente summadella narratologia mondialeEmerging vectors of Narratology(Hansen et al. 2017) contiene due saggi dedicati a questo tema e due volumi collettivi sono in pubblicazione. Questo articolo presenta le motivazioni di tale interesse per la complessità e traccia alcuni percorsi intorno a concezioni sistemiche della narrazione, dal Formalismo russo, ad una recente proposta di John Pier, fino a giungere alla narratologia cognitivista di seconda generazione.

In the last five years the attention of narratologists for complexity theory has been growing. The recent most comprehensive collection of narratology, Emerging vectors of Narratology(Hansen et al. 2017), includes two essays on the topic and two other collective books are forthcoming. This article explores the motivation of such interest in complexity and puts forth some reflections on systemic conceptions of narrative, from Russian Formalism, to a recent proposal by John Pier, ending with second generation cognitive narratology.
description: ENTHYMEMA, No 22 (2018)
Natalia, Elsa e gli spinaci. Il contributo di Lessico famigliare alla teoria letteraria
Creators: name: Barenghi, Mario
Publisher: name: ENTHYMEMA
Year: 2018
Subjects: Ginzburg, Natalia; Lessico famigliare; teoria letteraria; discorsi di ri-uso

description: Lessico famigliare (1963) non è solo la sanzione di una scoperta sociolinguistica (l’idioletto familiare): è anche un involontario, anticipatorio contributo all’idea di letteratura come «discorso di ri-uso» (Wiedergebrauchsrede), proposta nel decennio seguente da Franco Brioschi. Natalia Ginzburg illustra infatti con chiarezza come un enunciato, svincolandosi dal contesto di partenza, possa allentare il nesso con il proprio significato letterale e funzionare come dispositivo di riconoscimento reciproco all’interno di una data comunità di parlanti. Mezzo privilegiato di tale metamorfosi è la ripetizione, che rende ‘speciale’ un determinato discorso, predisponendolo a caricarsi di valori supplementari: come avviene, appunto, con il linguaggio poetico.

Natalia Ginzburg’s Family Sayings(1963) represents not only a sociolinguistic discovery (the broad notion of «lessico famigliare»), but also an unintentional anticipation of the idea of literature as «re-use discourse» (Wiedergebrauchsrede), which Franco Brioschi developed some years later. Ginzburg clearly shows how an utterance can become more and more independent from its original enunciation context and break free from its own literal meaning, also working as a device of mutual recognition within a speaking community. The primary medium to achieve this metamorphosis is repetition, which can make a certain discourse ‘special’ and apt to convey additional values – as it happens in the case of poetic language.
description: ENTHYMEMA, No 22 (2018)
Critica ed etica dei racconti autobiografici di malattia
Creators: name: Loddo, Mariarosa
Publisher: name: ENTHYMEMA
Year: 2018
Subjects: Autobiografia; etica; malattia

description: I racconti autobiografici di malattia sono da una ventina d’anni oggetto di interesse interdisciplinare, in particolare all’interno delle medical humanities, ma anche, dopo una prima diffidenza, da parte degli studi letterari. Proprio la critica si è trovata inizialmente a non sapere come considerare questi testi che, per via del tema trattato, sembrano appellarsi unicamente a una risposta compassionevole da parte del lettore. L'intento di questo contributo è invece di concentrarsi sulla struttura di questi racconti, che offrono l'occasione di mettere in discussione alcune nozioni narratologiche e indagare come i significati etici legati al testo vengono costruiti nel processo di ricezione. In particolare, verrà messa in luce la dinamica interazionale in cui sono collocati diversi elementi associati alla narrazione, quali il genere di riferimento, la progressione della trama, la postura autoriale e le tracce paratestuali.

Illness memoirs have been scrutinized by various disciplines for about twenty years, especially within the medical humanities. Literary studies have been focusing on illness narratives too, although it took some time to overcome the skepticism that surrounded these problematic texts, which used to be considered as lacking in aesthetic quality. On the contrary, this essay seeks to show how illness memoirs can even question some narratological concepts and challenge the way ethical meanings are identified in the text. In order to highlight the genre expectations that play an important role in the reception and in the composition of illness memoirs, I will draw attention on some aspects such as plot progression, authorial posture and paratextual elements.
description: ENTHYMEMA, No 22 (2018)
Low-frequency anomalies in dynamic localization
Creators: name: Longhi, Stefano
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Quantum mechanical spreading of a particle hopping on tight binding lattices can be suppressed by the application of an external ac force, leading to periodic wave packet reconstruction. Such a phenomenon, referred to as dynamic localization (DL), occurs for certain magic values of the ratio $Γ=F_0/ ω$ between the amplitude $F_0$ and frequency $ω$ of the ac force. It is generally believed that in the low-frequency limit ($ω\rightarrow 0$) DL can be achieved for an infinitesimally small value of the force $F_0$, i.e. at finite values of $Γ$. Such a normal behavior is found in homogeneous lattices as well as in inhomogeneous lattices of Glauber-Fock type. Here we introduce a tight-binding lattice model with inhomogeneous hopping rates, referred to as pseudo Glauber-Fock lattice, which shows DL but fails to reproduce the normal low-frequency behavior of homogeneous and Glauber-Fock lattices. In pseudo Glauber-Fock lattices, DL can be exactly realized, however at the DL condition the force amplitude $F_0$ remains finite as $ω\rightarrow 0$. Such an anomalous behavior is explained in terms of a $\mathcal{PT}$ symmetry breaking transition of an associated two-level non-Hermitian Hamiltonian that effectively describes the dynamics of the Hermitian lattice model.
description: 11 pages, 2 figures. To appear in J. Phys.: Condens. Matter
Esiste la situazione narrativa camera eye?
Creators: name: Giovannetti, Paolo
Publisher: name: ENTHYMEMA
Year: 2018
Subjects: Focalizzazione esterna; situazioni narrative; camera eye

description: La tecnica narrativa camera eyeda sempre è considerata come l’esito di un tipo di focalizzazione: per la precisione, comela conseguenza di un uso sistematico della focalizzazione esterna. Si può invece pensare che sia la focalizzazione esterna sia le forme del camera eyesono determinate da una strategia rappresentativa di natura più generale. Infatti, è probabile che esista qualcosa come una situazione narrativa camera eye.

Camera-eye narrative technique has always been considered mainly as a fact of focalization, that is, the consequence of a methodical narrative use of external focalization. On the contrary, it may be stated that both external focalization and camera-eye forms depend upon a more general representational strategy. In fact, something like a camera-eye narrative situation probably exists.
description: ENTHYMEMA, No 22 (2018)
Stable feet before a night out: Bovine arthrodesis
Creators: name: Breuer, Ryan M.
Publisher: name: American Association of Bovine Practitioners  Conference Proceedings
Year: 2023
Subjects: bovine
lameness
arthrodesis
hoof
joint

description: Lameness in cattle is one of the top causes of lost production in the United States. It affects milk production, feed and water intake, reproduction, daily gain, and animal wellbeing. While there is increasing information available in the literature de­scribing lameness in dairy cattle, comparatively very little is published on lameness in beef cattle. One of the most potential­ly debilitating causes of lameness is a septic distal interphalan­geal joint. When this occurs, an arthrodesis is a useful proce­dure to maintain the welfare and production of the bovine.
description: American Association of Bovine Practitioners Conference Proceedings, 2023 Recent Graduate Conference Proceedings
Power-Aware Hybrid Intrusion Detection System (PHIDS) using Cellular Automata in Wireless AdHoc Networks
Creators: name: Sree, Pokkuluri Kiran
name: Babu, Inampudi Ramesh
Publisher: name: arXiv
Year: 2013
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Adhoc wireless network with their changing topology and distributed nature are more prone to intruders. The network monitoring functionality should be in operation as long as the network exists with nil constraints. The efficiency of an Intrusion detection system in the case of an adhoc network is not only determined by its dynamicity in monitoring but also in its flexibility in utilizing the available power in each of its nodes. In this paper we propose a hybrid intrusion detection system, based on a power level metric for potential adhoc hosts, which is used to determine the duration for which a particular node can support a network monitoring node. Power aware hybrid intrusion detection system focuses on the available power level in each of the nodes and determines the network monitors. Power awareness in the network results in maintaining power for network monitoring, with monitors changing often, since it is an iterative power optimal solution to identify nodes for distributed agent based intrusion detection. The advantage that this approach entails is the inherent flexibility it provides, by means of considering only fewer nodes for reestablishing network monitors. The detection of intrusions in the network is done with the help of Cellular Automat CA. The CAs classify a packet routed through the network either as normal or an intrusion. The use of CAs enable in the identification of already occurred intrusions as well as new intrusions.
Modeling and Analysis of Multiple Electrostatic Actuators on the Response of Vibrotactile Haptic Device
Creators: name: Rajkumar, Santosh Mohan
name: Singh, Kumar Vikram
name: Koo, Jeong-Hoi
Publisher: name: arXiv
Year: 2023
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In this research, modeling and analysis of a beam-type touchscreen interface with multiple actuators is considered. As thin beams, a mechanical model of a touch screen system is developed with embedded electrostatic actuators at different spatial locations. This discrete finite element-based model is developed to compute the analytical and numerical vibrotactile response due to multiple actuators excited with varying frequency and amplitude. The model is tested with spring-damper boundary conditions incorporating sinusoidal excitations in the human haptic range. An analytical solution is proposed to obtain the vibrotactile response of the touch surface for different frequencies of excitations, the number of actuators, actuator stiffness, and actuator positions. The effect of the mechanical properties of the touch surface on vibrotactile feedback provided to the user feedback is explored. Investigation of optimal location and number of actuators for a desired localized response, such as the magnitude of acceleration and variation in acceleration response for a desired zone on the interface, is carried out. It has been shown that a wide variety of localizable vibrotactile feedback can be generated on the touch surface using different frequencies of excitations, different actuator stiffness, number of actuators, and actuator positions. Having a mechanical model will facilitate simulation studies capable of incorporating more testing scenarios that may not be feasible to physically test.
Distribution of population averaged observables in stochastic gene expression
Creators: name: Bhattacharyya, Bhaswati
name: Kalay, Ziya
Publisher: name: arXiv
Year: 2014
Subjects: subject: Molecular Networks (q-bio.MN)
subject: FOS: Biological sciences

description: Observation of phenotypic diversity in a population of genetically identical cells is often linked to the stochastic nature of chemical reactions involved in gene regulatory networks. We investigate the distribution of population averaged gene expression levels as a function of population, or sample, size for several stochastic gene expression models to find out to what extent population averaged quantities reflect the underlying mechanism of gene expression. We consider three basic gene regulation networks corresponding to transcription with and without gene state switching and translation. Using analytical expressions for the probability generating function of observables and Large Deviation Theory, we calculate the distribution and first two moments of the population averaged mRNA and protein levels as a function of model parameters, population size and number of measurements contained in a data set. We validate our results using stochastic simulations also report exact results on the asymptotic properties of population averages which show qualitative differences among different models.
description: 14 pages, 4 figures, Accepted for publication in Phys. Rev. E
Recensione a Casadei, Alberto. Biologia della letteratura. Corpo, stile, storia
Creators: name: Carnevale, Davide
Publisher: name: ENTHYMEMA
Year: 2018
Subjects: Cognitive poetics; stile; mente incorporata; web-cloud

description: Recensione di Casadei, Alberto. Biologia della letteratura. Corpo, stile, storia. il Saggiatore, 2018

Review of Casadei, Alberto. Biologia della letteratura. Corpo, stile, storia. il Saggiatore, 2018
description: ENTHYMEMA, No 22 (2018)
Deep optical observations of the gamma-ray pulsar J0357+3205
Creators: name: Kirichenko, Aida
name: Danilenko, Andrey
name: Shibanov, Yury
name: Shternin, Peter
name: Zharikov, Sergey
name: Zyuzin, Dmitry
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: A middle-aged radio-quiet pulsar J0357+3205 was discovered in gamma-rays with $Fermi$ and later in X-rays with $Chandra$ and $XMM$-$Newton$ observatories. It produces an unusual thermally-emitting pulsar wind nebula observed in X-rays. Deep optical observations were obtained to search for the pulsar optical counterpart and its nebula using the Gran Telescopio Canarias (GTC). The direct imaging mode in the Sloan $g'$ band was used. Archival X-ray data were reanalysed and compared with the optical data. No pulsar optical counterpart was detected down to $g'\geq~28_{\cdotp}^{\text{m}}1$. No pulsar nebula was either identified in the optical. We confirm early results that the X-ray spectrum of the pulsar consists of a nonthermal power-law component of the pulsar magnetospheric origin dominating at high energies and a soft thermal component from the neutron star surface. Using magnetised partially ionised hydrogen atmosphere models in X-ray spectral fits we found that the thermal component can come from entire surface of the cooling neutron star with a temperature of 36$^{+9}_{-6}$ eV, making it one of the coldest among cooling neutron stars known. The surface temperature agrees with the standard neutron star cooling scenario. The optical upper limit does not put any additional constraints on the thermal component, however it implies a strong spectral break for the nonthermal component between the optical and X-rays as is observed in other middle-aged pulsars. The thermal emission from the entire surface of the neutron star likely dominates over the nonthermal emission in the UV range. Observations of the PSR J0357+3205 in this range are promising to put more stringent constraints on its thermal properties.
description: 7 pages, 6 figures, 2 tables, accepted for publication in Astronomy and Astrophysics
Storie menti mondi, di Renata Gambino e Grazia Pulvirenti
Creators: name: Ballerio, Stefano
Publisher: name: ENTHYMEMA
Year: 2018
Subjects: Cognitive Poetics; ermeneutica; neuroermeneutica

description: Recensione di Gambino, Renata e Grazia Pulvirenti.Storie menti mondi. Approccio neuroermeneutico alla letteratura. Mimesis, 2018

Review of Gambino, Renata and Grazia Pulvirenti.Storie menti mondi. Approccio neuroermeneutico alla letteratura. Mimesis, 2018
description: ENTHYMEMA, No 22 (2018)
Factors Influencing Air Pollution Control of Beijing-Tianjin-Hebei Region in China
Creators: name: Yashuo Yang
Publisher: name: DR.KEN Institute of Academic Development and Promotion
Year: 2023
Subjects: Air Pollution
Beijing-Tianjin-Hebei Region
Influencing Factor

description: International Journal of Sociologies and Anthropologies Science Review, 3, 2, 15-28
10 pro techniques: Mastering the art of the bovine physical exam
Creators: name: Breuer, Ryan M.
Publisher: name: American Association of Bovine Practitioners  Conference Proceedings
Year: 2023
Subjects: bovine
physical
examination
techmiques

description: The bovine physical examination is viewed as a rudimentary skill utilized by the bovine practitioner, but this skill set, when performed with precision, detail and diligence, can provide information that will prompt further diagnostic testing as well as offer insight for making appropriate decisions on a diagnosis and prognosis for the animal being evaluated. Here, we’ll break down the physical exam to review the components and focus on techniques to gather more information for a systematic ap­proach to the physical exam.
description: American Association of Bovine Practitioners Conference Proceedings, 2023 Recent Graduate Conference Proceedings
Effect of surface roughness on jet impingement cooling of a superheated wall
Creators: name:  KAKERU MIZUKOSHI
name:   NORITAKA SAKO
name:   JUN HAYASHI
name:   YU DAIMON
name:   HIROSHI KAWANABE
Publisher: name: Proceedings of the Aerospace Europe Conference - EUCASS - CEAS - 2023
Year: 2023
Subjects: JET IMPINGEMENT COOLING
LIQUID FILM
SURFACE ROUGHNESS
HEAT TRANSFER

description: Jet impingement cooling of heated metal plates with different surface roughness was performed to investigate the effect of surface roughness on liquid film behavior and heat transfer characteristics. The cooling process was evaluated using the wall surface temperature and the maximum heat flux at the liquid film leading edge. The results showed that the wetting front progressed faster when the surface was smooth. It was also found that the roughness condition with the highest maximum heat flux value depends on the distance from the impinging point.
Recensione a Il fantasma dell’io: la massa e l’inconscio mimetico di Nidesh Lawtoo
Creators: name: Diazzi, Alessandra
Publisher: name: ENTHYMEMA
Year: 2018
Subjects: Teoria mimetica; inconscio; modernismo

description: Si recensisce Lawtoo, Nidesh. Il fantasma dell’io: la massa e l’inconscio mimetico. Mimesis, 2018.

This is the review of the Italian edition of Lawtoo, Nidesh. Il fantasma dell’io: la massa e l’inconscio mimetico. Mimesis, 2018.
description: ENTHYMEMA, No 22 (2018)
An Essay of Self-criticism of the Russian Intelligencija: Language, Literature, History
Creators: name: Maidanskaya, Irina
name: Maidansky, Maksim
Publisher: name: ENTHYMEMA
Year: 2018
Subjects: Intelligencija; Dostoevsky; Lev Tolstoy; Strachov; the Russian idea; philosophy of life

description: Review of the book: Klimova, S.M. Intelligencija v poiskach identichnosti: Dostoevsky – Tolstoy. SAleteja, 2018.
description: ENTHYMEMA, No 22 (2018)
Sergey Esenin: the Baku Period of Life and Creativity of the Great Russian Poet
Creators: name: Isaxanli, Isaxan
Publisher: name: ENTHYMEMA
Year: 2018
Subjects: Russian poetry; Sergey Esenin; Baku period; Azerbaijani-Russian literary and cultural ties; contemporaries’ memoirs.

description: Sergey Esenin is one of the most read Russian poets and at the same time remains one of the least studied. Thus, this article is devoted to the Baku period of Esenin's life, as he lived in Azerbaijan in 1924-1925. We have studied this period on the basis of newspaper articles, contemporaries’ memoirs, as well as scientific works of 60 Azerbaijani researchers. These works are important not only for the popularization of Esenin's poetry and classical Russian poetry in general, but also for Azerbaijani-Russian literary and cultural ties.
description: ENTHYMEMA, No 22 (2018)
KOI-2700b - A Planet Candidate With Dusty Effluents on a 22-Hour Orbit
Creators: name: Rappaport, S.
name: Barclay, T.
name: DeVore, J.
name: Rowe., J.
name: Sanchis-Ojeda, R.
name: Still, M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Kepler planet candidate KOI-2700b (KIC 8639908b) with an orbital period of 21.84 hours exhibits a distinctly asymmetric transit profile, likely indicative of the emission of dusty effluents, and reminiscent of KIC 1255b. The host star has $T_{\rm eff}$ = 4435 K, M = 0.63 $M_\odot$, and R = 0.57 $R_\odot$, comparable to the parameters ascribed to KIC 12557548. The transit egress can be followed for ~25% of the orbital period, and, if interpreted as extinction from a dusty comet-like tail, indicates a long lifetime for the dust grains of more than a day. We present a semi-physical model for the dust tail attenuation, and fit for the physical parameters contained in that expression. The transit is not sufficiently deep to allow for a study of the transit-to-transit variations, as is the case for KIC 1255b; however, it is clear that the transit depth is slowly monotonically decreasing by a factor of ~2 over the duration of the Kepler mission. The existence of a second star hosting a planet with a dusty comet-like tail would help to show that such objects may be more common and less exotic than originally thought. According to current models, only quite small planets with Mp < 0.03 $M_\oplus$ are likely to release a detectable quantity of dust. Thus, any "normal-looking" transit that is inferred to arise from a rocky planet of radius greater than ~1/2 $R_\oplus$ should not exhibit any hint of a dusty tail. Conversely, if one detects an asymmetric transit, due to a dusty tail, then it will be very difficult to detect the hard body of the planet within the transit because, by necessity, the planet must be quite small (i.e., < 0.3 $R_\oplus$).
description: 15 pages, 12 figures, submitted to ApJ
Predicting IPv4 Services Across All Ports
Creators: name: Izhikevich, Liz
name: Teixeira, Renata
name: Durumeric, Zakir
Publisher: name: arXiv
Year: 2023
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Internet-wide scanning is commonly used to understand the topology and security of the Internet. However, IPv4 Internet scans have been limited to scanning only a subset of services -- exhaustively scanning all IPv4 services is too costly and no existing bandwidth-saving frameworks are designed to scan IPv4 addresses across all ports. In this work we introduce GPS, a system that efficiently discovers Internet services across all ports. GPS runs a predictive framework that learns from extremely small sample sizes and is highly parallelizable, allowing it to quickly find patterns between services across all 65K ports and a myriad of features. GPS computes service predictions in 13 minutes (four orders of magnitude faster than prior work) and finds 92.5% of services across all ports with 131x less bandwidth, and 204x more precision, compared to exhaustive scanning. GPS is the first work to show that, given at least two responsive IP addresses on a port to train from, predicting the majority of services across all ports is possible and practical.
Game time : how does adolescent video game play relate to time spent in other activities?
Creators: name: Cummings, Hope Maylene
Publisher: name: The University of Texas at Austin
Year: 2005
Subjects: Game play
Adolescent development

description: Particularly during adolescence when social interactions and academic success lay the groundwork for health in adulthood, many fear that videogames will distract from important school-related, social and physical activities that are needed to make a successful transition to adulthood. The current study examines the notion that playing videogames interferes with the time adolescents spend in more developmentally appropriate activities. Differences in time spent between game players and non-game players were assessed as well as the magnitude of the relationships among game time and activity time among adolescent game players. Survey data drawn from a nationally representative sample of children ages 10-19 in 2002 (N = 1491) were utilized. 24-h time use diaries were used to determine adolescents’ time spent playing videogames, with parents and friends, reading and doing homework, in sports and active leisure, and using other media. Results indicated that 36% of adolescents played videogames. On average, gamers played for an hour on a weekday, and an hour and half on a weekend day. In general, gamers and non-gamers did not differ in the amount of time they spent interacting with family and friends, but adolescent gamers spent 30% less time reading and 34% less time doing homework. Among gamers (of both genders), time spent playing video games without parents or friends were negatively related to time spent with parents and friends in other activities. Implications of these findings are considered
Preservation and management of research data at the Swedish National Data Service
Creators: name: Swedish National Data Service
Publisher: name: Zenodo
Year: 2021
Subjects: requirements
recommendations
searchabiltiy
Swedish National Data Service
SND
research data
repository
research infrastructure
data management
data
open access
open science
data sharing
dissemination
metadata
accessibility
e-infrastructure
Swedish universities
DAU
Data Access Unit
DAU-handbook

description: Preservation and management of research data at the Swedish National Data Service 

This document describes how research data are preserved and managed, at SND, with the aim of being usable now and in the future. The document gives a brief description of the measures taken to ensure data integrity and long-term preservation.

 Swedish version of the document: 10.5281/zenodo.6460200
description: Funded by the Swedish Research Council
Constraints from $v_2$ fluctuations for the initial state geometry of heavy-ion collisions
Creators: name: Renk, Thorsten
name: Niemi, Harri
Publisher: name: arXiv
Year: 2014
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The ability to accurately compute the series of coefficients $v_n$ characterizing the momentum space anisotropies of particle production in ultrarelativistic heavy ion collisions as a function of centrality is widely regarded as a triumph of fluid dynamics as description of the bulk matter evolution. A key ingredient to fluid dynamical modeling is however the initial spatial distribution of matter as created by a yet not completely understood equilibration process. A measurement directly sensitive to this initial state geometry is therefore of high value for constraining models of pre-equilibrium dynamics. Recently, it has been shown that such a measurement is indeed possible in terms of the event by event probability distribution of the normalized $v_n$ distribution as a function of centrality, which is to high accuracy independent on the details of the subsequent fluid dynamical evolution and hence directly reflects the primary distribution of spatial eccentricities. We present a study of this observable using a variety of Glauber-based models and argue that the experimental data place very tight constraints on the initial distribution of matter and rule out all simple Glauber-based models.
description: 6 pages, 4 figures
The Impact of Data Persistence Bias on Social Media Studies
Creators: name: Elmas, Tuğrulcan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Social and Information Networks (cs.SI)
subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: Social media studies often collect data retrospectively to analyze public opinion. Social media data may decay over time and such decay may prevent the collection of the complete dataset. As a result, the collected dataset may differ from the complete dataset and the study may suffer from data persistence bias. Past research suggests that the datasets collected retrospectively are largely representative of the original dataset in terms of textual content. However, no study analyzed the impact of data persistence bias on social media studies such as those focusing on controversial topics. In this study, we analyze the data persistence and the bias it introduces on the datasets of three types: controversial topics, trending topics, and framing of issues. We report which topics are more likely to suffer from data persistence among these datasets. We quantify the data persistence bias using the change in political orientation, the presence of potentially harmful content and topics as measures. We found that controversial datasets are more likely to suffer from data persistence and they lean towards the political left upon recollection. The turnout of the data that contain potentially harmful content is significantly lower on non-controversial datasets. Overall, we found that the topics promoted by right-aligned users are more likely to suffer from data persistence. Account suspensions are the primary factor contributing to data removals, if not the only one. Our results emphasize the importance of accounting for the data persistence bias by collecting the data in real time when the dataset employed is vulnerable to data persistence bias.
description: In Proceedings of ACM WebSci23
On minimal Legendrian submanifolds of Sasaki-Einstein manifolds
Creators: name: Calamai, Simone
name: Petrecca, David
Publisher: name: arXiv
Year: 2014
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C25 (primary), 53C42 (secondary)

description: For a given minimal Legendrian submanifold $L$ of a Sasaki-Einstein manifold we construct two families of eigenfunctions of the Laplacian of $L$ and we give a lower bound for the dimension of the corresponding eigenspace. Moreover, in the case the lower bound is attained, we prove that $L$ is totally geodesic and a rigidity result about the ambient manifold. This is a generalization of a result for the standard Sasakian sphere done by Lê and Wang.
description: 14 pages. Comments and remarks are welcome
Partition function of N composite bosons
Creators: name: Shiau, Shiue-Yuan
name: Combescot, Monique
name: Chang, Yia-Chung
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The partition function of composite bosons ("cobosons" for short) is calculated in the canonical ensemble, with the Pauli exclusion principle between their fermionic components included in an exact way through the finite temperature many-body formalism for composite quantum particles we recently developed. To physically understand the very compact result we obtain, we first present a diagrammatic approach to the partition function of $N$ elementary bosons. We then show how to extend this approach to cobosons with Pauli blocking and interaction between their fermions. These diagrams provide deep insights on the structure of a coboson condensate, paving the way toward the determination of the critical parameters for their quantum condensation.
description: 16 pages, 16 figures
LION v0.1: Learned Iterative Optimization Networks
Creators: name: Biguri, Ander
name: Valat, Emilien
name: Limbach, Michelle
name: Coughlan, Oliver
name: Schönlieb, Carola-Bibiane
Publisher: name: Zenodo
Year: 2023
Subjects: software
machine learning

description: Poster for v0.1 of LION, a toolbox of machine learning methods for tomographic image reconstruction.
Parameter Sharing with Network Pruning for Scalable Multi-Agent Deep Reinforcement Learning
Creators: name: Kim, Woojun
name: Sung, Youngchul
Publisher: name: arXiv
Year: 2023
Subjects: subject: Multiagent Systems (cs.MA)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Handling the problem of scalability is one of the essential issues for multi-agent reinforcement learning (MARL) algorithms to be applied to real-world problems typically involving massively many agents. For this, parameter sharing across multiple agents has widely been used since it reduces the training time by decreasing the number of parameters and increasing the sample efficiency. However, using the same parameters across agents limits the representational capacity of the joint policy and consequently, the performance can be degraded in multi-agent tasks that require different behaviors for different agents. In this paper, we propose a simple method that adopts structured pruning for a deep neural network to increase the representational capacity of the joint policy without introducing additional parameters. We evaluate the proposed method on several benchmark tasks, and numerical results show that the proposed method significantly outperforms other parameter-sharing methods.
A novel radioguided surgery technique exploiting $β^{-}$ decays
Creators: name: Camillocci, E. Solfaroli
name: Baroni, G.
name: Bellini, F.
name: Bocci, V.
name: Collamati, F.
name: Cremonesi, M.
name: De Lucia, E.
name: Ferroli, P.
name: Fiore, S.
name: Grana, C. M.
name: Marafini, M.
name: Mattei, I.
name: Morganti, S.
name: Paganelli, G.
name: Patera, V.
name: Piersanti, L.
name: Recchia, L.
name: Russomando, A.
name: Schiariti, M.
name: Sarti, A.
name: Sciubba, A.
name: Voena, C.
name: Faccini, R.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Medical Physics (physics.med-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The background induced by the high penetration power of the gamma radiation is the main limiting factor of the current Radio-guided surgery (RGS). To partially mitigate it, a RGS with beta+ emitting radio-tracers has been suggested in literature. Here we propose the use of beta- emitting radio-tracers and beta- probes and discuss the advantage of this method with respect to the previously explored ones: the electron low penetration power allows for simple and versatile probes and could extend RGS to tumours for which background originating from nearby healthy tissue makes gamma probes less effective. We developed a beta- probe prototype and studied its performances on phantoms. By means of a detailed simulation we have also extrapolated the results to estimate the performances in a realistic case of meningioma, pathology which is going to be our first in-vivo test case. A good sensitivity to residuals down to 0.1ml can be reached within 1s with an administered activity smaller than those for PET-scans thus making the radiation exposure to medical personnel negligible.
description: 14 pages, 7 figures
The Arecibo Galaxy Environment Survey VIII : Discovery of an Isolated Dwarf Galaxy in the Local Volume
Creators: name: Taylor, R.
name: Minchin, R. F.
name: Herbst, H.
name: Smith, R.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The Arecibo Galaxy Environment Survey (AGES) has detected a nearby HI source at a heliocentric velocity of +363 km/s . The object was detected through its neutral hydrogen emission and has an obvious possible optical counterpart in Sloan Digital Sky Survey (SDSS) data (though it does not have an optical redshift measurement). We discuss three possible scenarios for the object : 1) It is within the Local Group, in which case its HI properties are comparable with recently discovered ultra-compact high velocity clouds; 2) It is just behind the Local Group, in which case its optical characteristics are similar to the newly discovered Leo P galaxy; 3) It is a blue compact dwarf galaxy within the local volume but not associated with the Local Group. We find the third possibility to be the most likely, based on distance estimates from the Tully-Fisher relation and its velocity relative to the Local Group.
description: 5 pages, 6 figures, accepted for publication in MNRAS. Minor correction to institution and address
title: Phytophthora on Abies spp. (true firs)
Creators: name: Talgø, Venche
name: Chastagner, Gary
Publisher: name: Julius Kühn-Institut, Bundesforschungsinstitut für Kulturpflanzen, Quedlinburg
Year: 2012

description: JKI Data Sheets Plant Pests and Diagnosis; 2012/3
Pumps and Turbopumps Test by Similitude
Creators: name:  DAN IFRIM
name:   SIMONA DANESCU
name:   THEODORA ANDREESCU
name:   ALEXANDRU CANCESCU
Publisher: name: Proceedings of the Aerospace Europe Conference - EUCASS - CEAS - 2023
Year: 2023
Subjects: TURBO
TESTING

description: Development and operating launchers are of high interest for space industry. The paper is focused on presenting the pumps and turbo pumps similitude test concept and the facility developed by COMOTI. There are presented the similarity conditions considered and test bench architecture and capabilities to obtain pumps performance curves and behaviour on cavitation. Test bench commission proceedings are explained too. Further more, the paper provides solutions for testing the turbopump turbines when high mass flow and high pressure of Nitrogen are necessary and information regarding the command control and data acquisition system (SCADA). A sustainable approach of proceedings is considered in respect of tests and Nitrogen supply costs.
Logarithmic Expansions and the Stability of Periodic Patterns of Localized Spots for Reaction-Diffusion Systems in $\R^2
Creators: name: Iron, David
name: Rumsey, John
name: Ward, Michael J.
name: Wei, Juncheng
Publisher: name: arXiv
Year: 2013
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Analysis of PDEs (math.AP)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The linear stability of steady-state periodic patterns of localized spots in $\R^2$ for the two-component Gierer-Meinhardt (GM) and Schnakenburg reaction-diffusion models is analyzed in the semi-strong interaction limit corresponding to an asymptotically small diffusion coefficient $\eps^2$ of the activator concentration. In the limit $\eps\to 0$, localized spots in the activator are centered at the lattice points of a Bravais lattice with constant area $|Ω|$. To leading order in $ν={-1/\log\eps}$, the linearization of the steady-state periodic spot pattern has a zero eigenvalue when the inhibitor diffusivity satisfies $D={D_0/ν}$, for some $D_0$ independent of the lattice and the Bloch wavevector $\kb$. From a combination of the method of matched asymptotic expansions, Floquet-Bloch theory, and the rigorous study of certain nonlocal eigenvalue problems, an explicit analytical formula for the continuous band of spectrum that lies within an ${\mathcal O}(ν)$ neighborhood of the origin in the spectral plane is derived when $D={D_0/ν} + D_1$, where $D_1={\mathcal O}(1)$ is a de-tuning parameter. The periodic pattern is linearly stable when $D_1$ is chosen small enough so that this continuous band is in the stable left-half plane $\mbox{Re}(λ)<0$ for all $\kb$. Moreover, for both the Schnakenburg and GM models, our analysis identifies a model-dependent objective function, involving the regular part of the Bloch Green's function, that must be maximized in order to determine the specific periodic arrangement of localized spots that constitutes a linearly stable steady-state pattern for the largest value of $D$. From a numerical computation, it is shown within the class of oblique Bravais lattices that a regular hexagonal lattice arrangement of spots is optimal for maximizing the stability threshold in $D$.
description: 41 pages, submitted to SIAM J. Appl. Dyn. Systems
Non-Cooperative Target Pose Estimation Based on Dynamic Region-Aware Convolution Neural Network
Creators: name:  ZHAOXIANG ZHANG
name:   YUELEI XU
name:   LINHUA MA
Publisher: name: Proceedings of the Aerospace Europe Conference - EUCASS - CEAS - 2023
Year: 2023
Subjects: POSE ESTIMATION
NON-COOPERATIVE TARGET
DEEP LEARNING

description: The paper proposes an end-to-end pose estimation algorithm for uncooperative space targets based on the EfficientPose model. It utilizes visible light images and incorporates data augmentation techniques to enhance model generalization. A precise model of the targets is constructed using Blender software, and a Linemod dataset is generated for training and testing. The algorithm employs dilated convolution layers to improve accuracy and robustness. Experimental evaluation using an autonomous uncooperative space target dataset shows promising performance in pose estimation. The proposed algorithm addresses the challenges posed by complex and unpredictable uncooperative space targets.
General approach to the understanding the electronic structure of graphene on metals
Creators: name: Voloshina, E. N.
name: Dedkov, Yu. S.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: This manuscript presents the general approach to the understanding of the connection between bonding mechanism and electronic structure of graphene on metals. To demonstrate its validity, two limiting cases of the "weakly" and "strongly" bonded graphene on Al(111) and Ni(111) are considered, where the Dirac cone is preserved or fully destroyed, respectively. Furthermore, the electronic structure, i. e. doping level, hybridization effects, as well as a gap formation at the Dirac point of the intermediate system, graphene/Cu(111), is fully understood in the framework of the proposed approach. This work summarises the long-term debates regarding connection of the bonding strength and the valence band modification in the graphene/metal systems and paves a way for the effective control of the electronic states of graphene in the vicinity of the Fermi level.
description: manuscript and supplementary material
Legendrian cycles and curvatures
Creators: name: Rataj, Jan
name: Zähle, Martina
Publisher: name: arXiv
Year: 2014
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C65, 28A75, 53A07

description: Properties of general Legendrian cycles $T$ acting in ${\mathbb R}^d\times S^{d-1}$ are studied. In particular, we give short proofs for certain uniqueness theorems with respect to the projections on the first and second component of such currents: In general, $T$ is determined by its restriction to the Gauss curvature form - this result goes back to J. Fu - and in the full-dimensional case also by the restriction to the surface area form. As a tool a version of the Constancy theorem for Lipschitz submanifolds is shown.
A new photometric and spectroscopic study of the eclipsing binaries CC Her and CM Lac: Physical parameters and evolutionary status
Creators: name: Liakos, Alexios
name: Niarchos, Panagiotis
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: New complete light and radial velocities curves were obtained for the eclipsing binaries CC Her and CM Lac. The data are analysed with modern techniques in order to derive the physical parameters of the systems and study their present evolutionary status. We found that CC Her is a classical Algol type binary, while CM Lac is a detached system with two Main Sequence stars in asynchronous orbit.
description: 10 pages, 13 figures
Poster: Development Of Mobile Learning Laboratorium Tafsir Sains (Labtafsin) As Tafsir Ilmy Learning Media
Creators: name: Niken Sylvia Puspitasari
name: Rochmad
name: Aqdi Rofiq Asnawi
name: Fajar Bakti Nugroho
name: Hanifah Amini
Publisher: name: Zenodo
Year: 2020

description: This material presented in 2nd ICESE 2020
Analysis of performance dispersion in pyrotechnic igniters employing BKNO3 pellets
Creators: name:  BARBARA BETTI
name:   GIULLIA PELLA
name:   FEDERICO NEGRO
name:   MATTEO MILANO
name:   OTTAVIO SCALI
name:   DANIELE BIANCHI
Publisher: name: Proceedings of the Aerospace Europe Conference - EUCASS - CEAS - 2023
Year: 2023
Subjects: PYROTECHNIC IGNITER
SOLID ROCKET MOTOR
BKNO3 PELLETS

description: In highly loaded pyrotechnic igniters for solid rocket motors, the peak pressure has been found to have a very large dispersion around the nominal value. In the present work, particular attention is focused on the performance response of BKNO3 pellets in a cup-like pyrotechnic igniter, to better understand intra-lot and inter-lot dispersion observed experimentally. Relying on a wide range of experimental data, chemical composition, ballistic properties and mechanical properties are evaluated. A simplified numerical model is presented in order to reduce the difference between prediction and experimental data considering the specific acceptance properties of each pellets lot available before test.