cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
RUSSIA IN THE CONTESTED NEIGHBOURHOOD: A NEOCLASSICAL REALIST APPROACH TO REGIONAL PRIMACY
Creators: name: Cuppuleri, Adriana
Publisher: name: Universit� degli studi di Trento
Year: 2021

description: Under what conditions has Russia adopted assertive foreign policies towards neighbouring states in order to pursue regional primacy? Scholars usually map Russia?s foreign policy according to theoretical approaches that are generated either from the individual, the state or the structural levels of analysis. However, each of them, taken individually, cannot account for Russia?s foreign policy across space and time. This study analyses the complex interplay between causal factors by developing a neoclassical realist model of Russia?s pursue of regional primacy in the contested neighbourhood with the EU. This study employs fuzzy-set Qualitative Comparative Analysis (fsQCA) at a cross-case level and Process Tracing at within-case level. fsQCA aims to test the explanatory value of systemic conditions such as external pressure in the regional neighbourhood by other regional powers and membership of target states in a military alliance (i.e. NATO); and of domestic conditions such as Russia?s status recognition by the West, and Russia?s state capacity. This analysis is based on 27 cases of Russia?s interaction with post-Soviet states between 1992 and 2015. Process Tracing is employed as a confirmatory method for within-case analysis.The results of the study suggest that Russia was inclined to adopt assertive foreign policy instruments, particularly military intervention, if external pressure from other great powers in a neighbouring country was combined with Russia?s high state capacity to mobilise resources. Due to NATO membership by neighbouring states, Russia resorted to coercive instruments rather than to direct use of force to maintain regional primacy. Finally, from the comparative process tracing, it emerged that, besides international security concerns and domestic constraints related to Russia?s status recognition, the two violent conflicts of Nagorno-Karabakh and South Ossetia/Abkhazia in the 1990s, which were of equal threat to Russia?s regional primacy in the South Caucasus, bore a different ?iconic significance? to Russia.
Jäger: Automated Telephone Call Traceback
Creators: name: Adei, David
name: Madathil, Varun
name: Prasad, Sathvik
name: Reaves, Bradley
name: Scafuro, Alessandra
Publisher: name: arXiv
Year: 2024
Subjects: subject: Cryptography and Security (cs.CR)
subject: Computers and Society (cs.CY)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Unsolicited telephone calls that facilitate fraud or unlawful telemarketing continue to overwhelm network users and the regulators who prosecute them. The first step in prosecuting phone abuse is traceback -- identifying the call originator. This fundamental investigative task currently requires hours of manual effort per call. In this paper, we introduce Jäger, a distributed secure call traceback system. Jäger can trace a call in a few seconds, even with partial deployment, while cryptographically preserving the privacy of call parties, carrier trade secrets like peers and call volume, and limiting the threat of bulk analysis. We establish definitions and requirements of secure traceback, then develop a suite of protocols that meet these requirements using witness encryption, oblivious pseudorandom functions, and group signatures. We prove these protocols secure in the universal composibility framework. We then demonstrate that Jäger has low compute and bandwidth costs per call, and these costs scale linearly with call volume. Jäger provides an efficient, secure, privacy-preserving system to revolutionize telephone abuse investigation with minimal costs to operators.
description: In Proceedings of the 2024 ACM SIGSAC Conference on Computer and Communications Security (CCS '24), October 14---18, 2024, Salt Lake City, UT, USA. ACM, New York, NY, USA, 24 pages
Quantum entanglement in analogue Hawking radiation, when is the final state non-separable ?
Creators: name: Busch, Xavier
name: Parentani, Renaud
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the quantum entanglement of the quasiparticle pairs emitted by analogue black holes. We use a phenomenological description of the spectra in dispersive media to study the domains in parameter space where the final state is non-separable. In stationary flows, three modes are involved in each sector of fixed frequency, and not two as in homogeneous situations. The third spectator mode acts as an environment for the pairs, and the strength of the coupling significantly reduces the quantum coherence. The non-separability of the pairs emitted by white holes are also considered, and compared with that of black holes.
description: 14 pages, 17 figures
Hydrodynamic Interactions Between Charged and Uncharged Brownian Colloids at a Fluid-Fluid Interface
Creators: name: Dani, Archit
name: Yeganeh, Mohsen
name: Maldarelli, Charles
Publisher: name: arXiv
Year: 2022
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Hypothesis: The collective dynamics and self-assembly of colloids floating at a fluid/fluid interface is a balance between deterministic lateral interaction forces, viscous resistance to colloid motion along the surface and thermal (Brownian) fluctuations. As the colloid size decreases, thermal forces become important and can affect the self assembly into ordered patterns and crystal structures that are the starting point for various materials applications. Numerics: Langevin dynamic simulations involving two particles straddling a liquid/liquid interface with a high viscosity contrast are presented to describe the lateral interfacial assembly of particles in Brownian and non-Brownian dominated regimes. These simulations incorporate capillary attraction, electrostatic repulsion, thermal fluctuations and HI between particles (including the effect of the particle immersion depth). Simulation results are presented for neutrally wetted particles which form a contact angle of 90 degrees at the interface. Findings: Clustering, fractal growth and particle ordering are observed at critically large values of the Pe numbers, while smaller Pe numbers exhibit higher probabilities of yielding states in which particles remain uncorrelated in space and more widely separated.
Differential equations for the closed geometric crystal chains
Creators: name: Takagi, Taichiro
Publisher: name: arXiv
Year: 2022
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We present two types of systems of differential equations that can be derived from a set of discrete integrable systems which we call the closed geometric crystal chains. One is a kind of extended Lotka-Volterra systems, and the other seems to be generally new but reduces to a previously known system in a special case. Both equations have Lax representations associated with what are known as the loop elementary symmetric functions, which were originally introduced to describe products of affine type A geometric crystals for symmetric tensor representations. Examples of the derivations of the continuous time Lax equations from a discrete time one are described in detail, where a novel method of taking a continuum limit by assuming asymptotic behaviors of the eigenvalues of the Lax matrix in Puiseux series expansions is used.
description: v2: 29 pages, many corrections
Open Science @ UNIBO: il servizio di supporto a rete per le comunità di ricerca
Creators: name: Frascari, Irene
name: Marafioti, Martina
name: Brugnoli, Claudia
name: Cavicchi, Claudia
name: Chinni, Tristana
name: Dessì, Davide
name: Di Tullio, Virginia
name: Filippucci, Gustavo
name: Fuschini, Elena
name: Gravina, Arianna
name: Iacono Isidoro, Carla
name: Liccati, Domenico
name: Lotti, Barbara
name: Miceli, Rosalia
name: Miconi, Serena
name: Panfalone, Serenella
name: Rivi, Claudia
name: Severi, Ambra
name: Vignocchi, Marialaura
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2023

description: Le forti spinte globali a favore dell’Open Access (OA) e dell’Open Science (OS) hanno sollecitato i sistemi bibliotecari delle università a rivedere servizi e competenze in funzione dei nuovi bisogni delle loro comunità di riferimento. Il Sistema Bibliotecario dell’Università di Bologna ha risposto a questi stimoli definendo un modello a rete a supporto dell’Open Access avviato sperimentalmente nella seconda metà del 2018. L’obiettivo strategico condiviso e co-gestito dall’intera comunità accademica è la promozione di prassi che consentano il libero accesso e il riuso delle pubblicazioni e dei dati della ricerca scientifica. Il servizio si struttura come una rete decentrata di punti di supporto collocati nelle biblioteche con il coordinamento centrale a cura della Biblioteca Digitale di Ateneo, AlmaDL. AlmaDL si occupa della formazione dei bibliotecari del servizio di supporto, fornisce loro assistenza specialistica anche in materia di diritto d’autore, coordina, monitora e sostiene il servizio con personale dedicato, oltre a offrire assistenza per la gestione FAIR dei dati di ricerca nel data repository di Ateneo e a garantire il raccordo istituzionale partecipando al Gruppo di lavoro Open Science di Ateneo. I punti di servizio offrono alle loro comunità scientifiche consulenza e orientamento, validano le pubblicazioni scientifiche depositate nel repository istituzionale, organizzano campagne di sensibilizzazione e rispondono alle esigenze specifiche delle comunità scientifiche. Ad oggi i bibliotecari coinvolti nel servizio sono 61; quasi 24.000 le pubblicazioni in OA e oltre 200 i dataset depositati nei repository istituzionali; 4830 le consulenze e 178 ore di formazione a cui hanno partecipato 1307 utenti. Il modello adottato ha presentato numerosi vantaggi rivelandosi sostenibile e attento alle specificità dei diversi ambiti disciplinari. Inoltre il continuo scambio di informazioni tra i nodi della rete permette lo sviluppo delle competenze e delle conoscenze in una continua ridefinizione del modello organizzativo e dei contenuti del servizio.
Bridging Research and Practice Through Conversation: Reflecting on Our Experience
Creators: name: Russo, Mayra
name: Jorgensen, Mackenzie
name: Scott, Kristen M.
name: Xu, Wendy
name: Nguyen, Di H.
name: Finocchiaro, Jessie
name: Olckers, Matthew
Publisher: name: arXiv
Year: 2024
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: While some research fields have a long history of collaborating with domain experts outside academia, many quantitative researchers do not have natural avenues to meet experts in areas where the research is later deployed. We explain how conversations -- interviews without a specific research objective -- can bridge research and practice. Using collaborative autoethnography, we reflect on our experience of conducting conversations with practitioners from a range of different backgrounds, including refugee rights, conservation, addiction counseling, and municipal data science. Despite these varied backgrounds, common lessons emerged, including the importance of valuing the knowledge of experts, recognizing that academic research and practice have differing objectives and timelines, understanding the limits of quantification, and avoiding data extractivism. We consider the impact of these conversations on our work, the potential roles we can serve as researchers, and the challenges we anticipate as we move forward in these collaborations.
description: Accepted for publication at the fourth ACM Conference on Equity and Access in Algorithms, Mechanisms, and Optimization (EAAMO'24)
Comunicare, negoziare e mediare in rete: atti del convegno: Trento, 25 settembre 2020
Creators: name: Dalla Bont�, Silvana
Publisher: name: Universit� degli Studi di Trento, Facolt� di Giurisprudenza
Year: 2021

description: Il volume raccoglie gli Atti del Convegno tenutosi presso la Facolt� di Giurisprudenza dell?Universit� degli Studi di Trento, il 25 settembre 2020, sul tema ?Comunicare, negoziare e mediare in rete?, evento che ha tratto occasione dalla ?messa in rete? del sito dedicato al Progetto Conflict Managers of Tomorrow, Progetto di ricerca e didattica della Facolt� di Giurisprudenza di Trento, fondato dalla Professoressa Silvana Dalla Bont�. Gli scritti ospitati nella Collettanea restituiscono i contributi dei relatori a quel Convegno, quali membri del citato Progetto. Reso ancora pi� attuale dall?avvento della pandemia da Covid-19, l?oggetto del Convegno e i contributi raccolti in questi Atti si snodano in un esame ravvicinato della comunicazione in rete sino al negoziato e alla mediazione online: un?indagine che si muove dal generale al particolare. Dall?analisi del proprio stile relazionale nella comunicazione digitale all?esame della comunicazione cross-culturale mediante e mediati dalla tecnologia, il volume apre quindi alla dimensione europea degli strumenti alternativi al processo di soluzione in linea del conflitto consumeristico per passare ad indagare la nuova frontiera aperta dalle c.d. Online Dispute Resolution. Si giunge quindi alla restituzione di esperienze concrete di negoziato e mediazione in rete per individuare le molte questioni giuridiche sollevate dalla conclusione dell?accordo negoziale in rete alla luce della c.d. legislazione nazionale emergenziale. Il volume si conclude con un affresco sulle sfide che l?uso della tecnologia pone al futuro giurista, evidenziando l?urgenza di ripensare il percorso educativo e formativo universitario e post-universitario dei giuristi del domani.
Predictive Comparative QSAR Analysis Of As 5-Nitofuran-2-YL Derivatives Myco bacterium tuberculosis H37RV Inhibitors Bacterium Tuberculosis H37RV Inhibitors
Creators: name: Doreswamy
name: Vastrad, Chanabasayya . M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Computer and information sciences

description: Antitubercular activity of 5-nitrofuran-2-yl Derivatives series were subjected to Quantitative Structure Activity Relationship (QSAR) Analysis with an effort to derive and understand a correlation between the biological activity as response variable and different molecular descriptors as independent variables. QSAR models are built using 40 molecular descriptor dataset. Different statistical regression expressions were got using Partial Least Squares (PLS),Multiple Linear Regression (MLR) and Principal Component Regression (PCR) techniques. The among these technique, Partial Least Square Regression (PLS) technique has shown very promising result as compared to MLR technique A QSAR model was build by a training set of 30 molecules with correlation coefficient ($r^2$) of 0.8484, significant cross validated correlation coefficient ($q^2$) is 0.0939, F test is 48.5187, ($r^2$) for external test set (pred$_r^2$) is -0.5604, coefficient of correlation of predicted data set (pred$_r^2se$) is 0.7252 and degree of freedom is 26 by Partial Least Squares Regression technique.
Open-VICO: An Open-Source Gazebo Toolkit for Vision-based Skeleton Tracking in Human-Robot Collaboration
Creators: name: Fortini, Luca
name: Leonori, Mattia
name: Gandarias, Juan M.
name: De Momi, Elena
name: Ajoudani, Arash
Publisher: name: arXiv
Year: 2022
Subjects: subject: Robotics (cs.RO)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Simulation tools are essential for robotics research, especially for those domains in which safety is crucial, such as Human-Robot Collaboration (HRC). However, it is challenging to simulate human behaviors, and existing robotics simulators do not integrate functional human models. This work presents Open-VICO, an open-source toolkit to integrate virtual human models in Gazebo focusing on vision-based human tracking. In particular, Open-VICO allows to combine in the same simulation environment realistic human kinematic models, multi-camera vision setups, and human-tracking techniques along with numerous robot and sensor models thanks to Gazebo. The possibility to incorporate pre-recorded human skeleton motion with Motion Capture systems broadens the landscape of human performance behavioral analysis within Human-Robot Interaction (HRI) settings. To describe the functionalities and stress the potential of the toolkit four specific examples, chosen among relevant literature challenges in the field, are developed using our simulation utils: i) 3D multi-RGB-D camera calibration in simulation, ii) creation of a synthetic human skeleton tracking dataset based on OpenPose, iii) multi-camera scenario for human skeleton tracking in simulation, and iv) a human-robot interaction example. The key of this work is to create a straightforward pipeline which we hope will motivate research on new vision-based algorithms and methodologies for lightweight human-tracking and flexible human-robot applications.
description: 7 pages, 8 figures. The final version of this preprint has been published at IEEE International Conference on Robot & Human Interactive Communication. DOI: 10.1109/RO-MAN53752.2022.9900851. Code: https://gitlab.iit.it/hrii-public/open-vico
Translational modulation through CRISPR-Cas-mediated genome editing
Creators: name: Ambrosini, Chiara
Publisher: name: Universit� degli studi di Trento
Year: 2021

description: More than 300 human conditions, ranging from cancer predisposition to developmental and neurological mendelian disorders, are caused by haploinsufficiency (HI), a genetic condition by which mutational inactivation of a single allele leads to reduced protein levels and is enough to produce the disease phenotype. Therefore, translational enhancement of the spare allele could exert a therapeutic effect. Here we propose a novel approach for the potential rescue of haploinsufficiency disease loci based on the insertion of specific single nucleotide changes in the Kozak sequence. Since this sequence controls translation by regulating start codon recognition, we aimed at identifying and introducing specific nucleotide variations to enhance translation and rescue haploinsufficiency. To do so, we used CRISPR-Cas base editors, able to generate single nucleotide changes in genomic DNA without the need of a donor DNA and without creating double-strand breaks. We performed a high-throughput screening to evaluate the strength of the Kozak sequences of 231 haploinsufficient genes. We compared the translational efficiency of each wild-type sequence to that of several variants using FACS-seq, which combines fluorescence-activated cell sorting and high-throughput DNA sequencing. We thus selected 5 candidate genes (PPARGC1B, FKBP6, GALR1, NRXN1, and NCF1) and several nucleotide variations able to up-regulate translation. Finally, we used CRISPR-Cas base editors to reproduce the most efficient variants of NCF1 in a cell model relevant for the associated haploinsufficient disease and verified the increase of protein levels. This study proposes a novel therapeutic strategy to rescue haploinsufficiency and sheds new insights into the regulatory mechanisms underlying the translational process. On a broader level, the possibility of modulating gene expression by acting exclusively on translation expands the CRISPR-Cas genome editing applications.
Application of GC�GC-MS in VOC analysis of fermented beverages
Creators: name: Zhang, Penghan
Publisher: name: Universit� degli studi di Trento
Year: 2021

description: GC�GC is an efficient tool for the analysis of volatile compound. However, improvements are still required on VOC extraction, GC�GC setup and data processing. Different sample preparation techniques and GC�GC setup were compared based on the literature study and experimental results. Each VOC extraction technology has its own drawbacks and needs new developments. There wasn?t an ideal sample preparation technique to recover all the VOCs from the beverage sample. Furthermore, the VOCs recovered by different techniques were very different. The discussion of the pros and cons of the different techniques in our study can serve as a guide for the further development and improvement of these techniques. Combining the results from different sample preparation techniques is necessary to achieve a higher coverage of global VOC profiling. For the known fermentative aromatic compounds, the best coverage can be reached by using SPME together with SPE for beer, and VALLME for wine and cider. A fine GC�GC method development involves modulator selection, column combination and parameter optimization. Thermal modulator provides high detection sensitivity and allow exceptional trace analysis. Since the analytes coverage is the most important factor of in beverage VOC profiling, thermal modulation is a better choice. In fermented beverages, there are more polar compounds than non-polar compounds. The most suitable column combination is polar-semipolar. Same column diameters shall be used to minimize the column overloading. GC�GC parameters must be optimized. These parameters interact with each other therefore statistical prediction model is required. Response surface model is capable of doing this job while using a small number of experimental tests. The nearest neighbor distance was a suitable measurement for peak dispersion. Column and detector saturations are unavoidable if the metabolic sample is measured at one dilution level, incorrect peak deconvolution and mass spectrum construction may happen. Data processing results can be improved by a two-stage data processing strategy that will incorporate a targeted data processing and cleaning approach upstream of the ?standard? untargeted analysis. Our experiments show a significant improvement in annotation and quantification results for targeted compounds causing instrumental saturation. After subtracting the saturate signal of targeted compounds, the MS construction was improved for co-eluted compounds. Incomplete signal subtraction may occur. It leads to the detection of false positive peaks or to interferences with the construction of mass spectra of co-diluted peaks. High-resolution MS libraries and more accurate peak area detection methods should be tested for further improvement.
Learning Personalized Human-Aware Robot Navigation Using Virtual Reality Demonstrations from a User Study
Creators: name: de Heuvel, Jorge
name: Corral, Nathan
name: Bruckschen, Lilli
name: Bennewitz, Maren
Publisher: name: arXiv
Year: 2022
Subjects: subject: Robotics (cs.RO)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: For the most comfortable, human-aware robot navigation, subjective user preferences need to be taken into account. This paper presents a novel reinforcement learning framework to train a personalized navigation controller along with an intuitive virtual reality demonstration interface. The conducted user study provides evidence that our personalized approach significantly outperforms classical approaches with more comfortable human-robot experiences. We achieve these results using only a few demonstration trajectories from non-expert users, who predominantly appreciate the intuitive demonstration setup. As we show in the experiments, the learned controller generalizes well to states not covered in the demonstration data, while still reflecting user preferences during navigation. Finally, we transfer the navigation controller without loss in performance to a real robot.
Spectroscopic orbits of ten nearby solar-type dwarfs
Creators: name: Gorynya, N. A.
name: Tokovinin, A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Several nearby solar-type dwarfs with variable radial velocity were monitored to find their spectroscopic orbits. Orbital elements of HIP 179, 1989, 2981, 5276, 6439, 11218, 21443, 96434 are determined, as well as tentative orbits for HIP 28678 and 41214. We discuss each of those objects. Three of the four double-lined binaries are twins with nearly equal components. All four orbits with periods shorter than 10 days are circular, the remaining orbits are eccentric.
description: Accepted by MNRAS; 6 pages, 2 figures
On the relation between metallicity and RGB color in HST/ACS data
Creators: name: Streich, David
name: de Jong, Roelof S.
name: Bailin, Jeremy
name: Goudfrooij, Paul
name: Radburn-Smith, David
name: Vlajic, Marija
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The determination of stellar metallicity and its gradient in external galaxies is a difficult task, but crucial for the understanding of galaxy formation and evolution. The color of the Red Giant Branch (RGB) can be used to determine metallicities of stellar populations that have only shallow photometry. We will quantify the relation between metallicity and color in the widely used HST ACS filters F606W and F814W. We use a sample of globular clusters from the ACS Globular Cluster Survey and measure their RGB color at given absolute magnitudes to derive the color-metallicity relation. We especially investigate the scatter and the uncertainties in this relation and show its limitations. There is a clear relation between metallicity and RGB color. A comparison with isochrones shows reasonably good agreement with BaSTI models, a small offset to Dartmouth models, and a larger offset to Padua models. Even for the best globular cluster data available, the metallicity of a simple stellar population can be determined from the RGB alone only with an accuracy of 0.3dex for [M/H]< -1, and 0.15dex for [M/H]> -1. For mixed populations, as they are observed in external galaxies, the uncertainties will be even larger due to uncertainties in extinction, age, etc. Therefore caution is necessary when interpreting photometric metallicities.
description: accepted for publication in A&A
Stochastic equations for a self-regulating gene
Creators: name: Jansen, Martin
Publisher: name: arXiv
Year: 2014
Subjects: subject: Molecular Networks (q-bio.MN)
subject: Probability (math.PR)
subject: FOS: Biological sciences
subject: FOS: Mathematics
subject: J.3; G.3; G.1.0
subject: 92C42, 60J28, 65C40

description: Expression of cellular genes is regulated by binding of transcription factors to their promoter, either activating or inhibiting transcription of a gene. Particularly interesting is the case when the expressed protein regulates its own transcription. In this paper the features of this self-regulating process are investigated. In the here presented model the gene can be in two states. Either a protein is bound to its promoter or not. The steady state distributions of protein during and at the end of both states are analyzed. Moreover a powerful numerical method based on the corresponding master equation to compute the protein distribution in the steady state is presented and compared to an already existing method. Additionally the special case of self-regulation, in which protein can only be produced, if one of these proteins is bound to the promoter region, is analyzed. Furthermore a self-regulating gene is compared to a similar gene, which also has two states and produces the same amount of proteins but is not regulated by its protein-product.
Higher-order correlation based real-time beamforming in photoacoustic imaging
Creators: name: Mulani, Sufayan
name: Paul, Souradip
name: Singh, Mayanglambam Suheshkumar
Publisher: name: arXiv
Year: 2022
Subjects: subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: Linear-array based photoacoustic images are reconstructed using the conventional delay-and-sum (DAS) beamforming method. Although the DAS beamformer is well suited for PA image formation, reconstructed images are often afflicted by noises, sidelobes, and other intense artifacts due to inaccurate assumptions of PA signal correlation. The work aims to develop an inversion method that reduces the occurrence of sidelobes and artifacts and improves image quality performance. We present a novel beamformer based on higher-order signal correlation, where more number of delayed PA signals are combined and summed up than the conventional delay-multiply-and-sum (DMAS). The proposed technique provides efficient improvements in resolution, contrast, and SNR compared to the traditional beamformers. Computational complexity in this method is shrunk to the same order of DAS $O(N)$. Therefore, this beamformer can be implemented in real-time PA image reconstruction. A GPU based study was performed on computation time. Proposed method almost executes in the same time frame of DAS and real-time DMAS. A validation study of the algorithm was accomplished both numerically and experimentally. Higher-order DMAS beamformers demonstrate superior reconstruction in all cases. The quantitative evaluation of the ex-vivo phantom shows that the proposed method leads to 51% and 6% improvement in FWHM, 81% and 39% improvement in SNR compared to DAS and DMAS, respectively. Conclusively, the proposed algorithm is very much potential and promising in real-time photoacoustic imaging and its applications.
Faraday waves in collisionally inhomogeneous Bose-Einstein condensates
Creators: name: Balaz, Antun
name: Paun, Remus
name: Nicolin, Alexandru I.
name: Balasubramanian, Sudharsan
name: Ramaswamy, Radha
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Pattern Formation and Solitons (nlin.PS)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We study the emergence of Faraday waves in cigar-shaped collisionally inhomogeneous Bose-Einstein condensates subject to periodic modulation of the radial confinement. Considering a Gaussian-shaped radially inhomogeneous scattering length, we show through extensive numerical simulations and detailed variational treatment that the spatial period of the emerging Faraday waves increases as the inhomogeneity of the scattering length gets weaker, and that it saturates once the width of the radial inhomogeneity reaches the radial width of the condensate. In the regime of strongly inhomogeneous scattering lengths, the radial profile of the condensate is akin to that of a hollow cylinder, while in the weakly inhomogeneous case the condensate is cigar-shaped and has a Thomas-Fermi radial density profile. Finally, we show that when the frequency of the modulation is close to the radial frequency of the trap, the condensate exhibits resonant waves which are accompanied by a clear excitation of collective modes, while for frequencies close to twice that of the radial frequency of the trap, the observed Faraday waves set in forcefully and quickly destabilize condensates with weakly inhomogeneous two-body interactions.
description: 11 pages, 5 figures, references updated
Digitale Revolution in Planung- und Bauprozessen
Creators: name: Schmidiger, Markus (Autor/in)
Publisher: name: Zenodo
Year: 2017
Subjects: Digitalisierung
Planen
Bauen

description: Die Baubranche hat im Vergleich mit anderen Branchen ein Produktivitätsproblem. Die zunehmenden digitalen Einflussfaktoren haben das Potential, verschiedenste Teilbereiche zu revolutionieren. Die dadurch zu erwartenden Produktivitätsfortschritte werden dazu führen, dass sie sich schnell durchsetzen werden. BIM ist an sich nichts Revolutionäres: primär werden die bestehenden Methoden und Prozesse mit digitalen Instrumenten abgebildet. In einem nächsten Schritt sind wesentlich weitergehende Neuerungen zu erwarten.
description: + ID der Publikation: hslu_57398 + Art des Beitrages: Buchkapitel/Beitrag in Sammelband + Herausgeberschaft: Schmidiger, Markus; Kovacic, Iva; Petzold, Frank; Vom, Jürgen M. + Seiten: 17 - 29 + Reihe: Schriften aus dem Institut für Finanzdienstleistungen Zug IFZ, No 39 + Sprache: Deutsch + Letzte Aktualisierung: 2018-12-28 13:14:07
Stores, impacts and dispersal of sediments contaminated by mining legacy in rivers and estuaries induced by climate change effects
Creators: name: Bergmann Filho, Tullus Ullus
Publisher: name: Universit� degli studi di Trento
Year: 2021

description: The history of mining exploration has left a significant stock of legacy contamination in the UK?s river sediments. Flood events have contributed to the erosion of upstream sediment deposits and widespread the contamination throughout river basins, carrying mining legacy sediments to lowland rivers and estuaries. This thesis investigates how the increase of climate change effects could disturb the mining legacy deposits and the consequences for the river health. The physical characteristics and the proximity to the Tamar Estuary makes the mining legacy sediments in the Cotehele a good site to understand the dispersal and impacts of such sediment to rivers and estuaries. The metals Cu and Pb were the most explored metals in upstream mines. In terms of magnitude, the sediment deposits presented concentrations ranging between 38 to 140 times higher than background values for Cu and 2 to 16 times above background values for Pb. A bioaccumulation experiment exposing snails to re-suspended sediments in waters with different salinities was performed. The aim was to understand how different salinities can influence the uptake of metals. The bioaccumulation experiment demonstrated that the disturbance of sediments released metals at a concentration that may cause deleterious ecotoxicological effects. Modelling simulations demonstrated that the worst-case scenario would spread Cu concentrations above EQS (Environmental Quality Standards) in areas with high potential for bioaccumulation for a prolonged time. After agriculture, pollution from abandoned mines is the second main reason for the deterioration of the Lower Tamar. The results demonstrated that the impacts of climate change could bring further challenges to the improvement of the Lower Tamar water quality.
Fast Comparative Analysis of Merge Trees Using Locality Sensitive Hashing
Creators: name: Lyu, Weiran
name: Sridharamurthy, Raghavendra
name: Phillips, Jeff M.
name: Wang, Bei
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computational Geometry (cs.CG)
subject: FOS: Computer and information sciences

description: Scalar field comparison is a fundamental task in scientific visualization. In topological data analysis, we compare topological descriptors of scalar fields -- such as persistence diagrams and merge trees -- because they provide succinct and robust abstract representations. Several similarity measures for topological descriptors seem to be both asymptotically and practically efficient with polynomial time algorithms, but they do not scale well when handling large-scale, time-varying scientific data and ensembles. In this paper, we propose a new framework to facilitate the comparative analysis of merge trees, inspired by tools from locality sensitive hashing (LSH). LSH hashes similar objects into the same hash buckets with high probability. We propose two new similarity measures for merge trees that can be computed via LSH, using new extensions to Recursive MinHash and subpath signature, respectively. Our similarity measures are extremely efficient to compute and closely resemble the results of existing measures such as merge tree edit distance or geometric interleaving distance. Our experiments demonstrate the utility of our LSH framework in applications such as shape matching, clustering, key event detection, and ensemble summarization.
description: IEEE VIS 2024
Shear flow over a surface containing a groove covered by an incompressible surfactant phase
Creators: name: Baier, Tobias
name: Hardt, Steffen
Publisher: name: arXiv
Year: 2022
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We study shear-driven liquid flow over a planar surface with an embedded gas-filled groove, with the gas-liquid interface protruding slightly above or below the planar surface. The flow direction is along the groove, taken to be much longer than wide, and the gas-liquid interface is assumed to be covered by an incompressible surface fluid, representing a surfactant phase. Using the incompressiblity condition for the surface fluid, the equations of motion and corresponding boundary conditions for the liquid phase are obtained by minimizing the dissipation rate. Assuming a moderate deformation of the interface, a domain perturbation technique with the maximal deformation as the small parameter is employed. The Stokes equation in the liquid phase under corresponding boundary conditions is solved to second order in the deformation using the Keldysh-Sedov formalism. The obtained analytical results are compared with numerical calculations of the same problem, allowing an assessment of the limits of validity of the expansion. While on a planar gas-liquid interface no flow is induced, a recirculating flow is observed on an interface protruding slightly above or below the planar surface. The study sheds light onto the mobility of curved gas-liquid interfaces in the presence of surfactants acting as an incompressible surface fluid.
description: revised version; 16 pages, 4 figures
Handreichung für ein FAIRes Management kulturwissenschaftlicher Forschungsdaten
Creators: name: Kailus, Angela
Publisher: name: Zenodo
Year: 2023
Subjects: subject: Research Data
subject: FAIR Data Principles
subject: Cultural Heritage
subject: Digital Humanities
subject: https://d-nb.info/gnd/1098579690
subject: https://d-nb.info/gnd/1215856822
subject: https://d-nb.info/gnd/4033560-4
subject: https://d-nb.info/gnd/4033597-5
subject: https://d-nb.info/gnd/1038714850

description: Um optimal nachnutzbar zu sein, sollen Forschungsdaten gemäß den FAIR-Prinzipien aufbereitet werden. Dazu müssen sie auffindbar (Findable), zugänglich (Accessible), interoperabel (Interoperable) und wiederverwendbar (Reusable) sein. Die FAIR-Prinzipien sind in den letzten Jahren zur bestimmenden Leitformel für nachhaltiges Forschungsdatenmanagement geworden. Diese NFDI4Culture-Handreichung erklärt, was die Leitlinien bedeuten und wie sie in den Kulturwissenschaften und in Kulturerbe-Sammlungen umgesetzt werden können, um Forschungsdaten sowohl für Menschen wie auch Maschinen in bestmöglicher Weise verständlich und so offen wie möglich zugänglich zu machen. Die Handreichung ist außerdem online unter https://nfdi4culture.de/go/E3625 verfügbar. Die zugehörige Datenpublikation (Ausgangsdateien, Abbildungen, Materialien zur Nachnutzung) ist unter https://doi.org/10.5281/zenodo.7689172 zugänglich.
description: Funding: Deutsche Forschungsgemeinschaft (DFG), Projektnummer 441958017 (NFDI4Culture)
Niparaya Zamora-Silva & Malaquias, 2018, GEN. NOV.
Creators: name: Zamora-Silva, Andrea
name: Malaquias, Manuel António E.
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Cephalaspidea
Aglajidae
Niparaya

description: GENUS NIPARAYA GEN. NOV.
(FIGS 3J, 5D; TABLES 1 AND 2)
Type species: Aglaja regiscorona Bertsch, 1972. By subsequent designation.
Diagnosis: Live animals up to 5 mm in length. Cephalic shield acuminated, with translucent velum along the front side (autapomorphy) and a posterior, small, three-pointed elevated crown-like projection (autapomorphy); reduced sensory bristles, not visible to the naked eye; posterior shield with bulbous pustules (autapomorphy); symmetrical caudal lobes, rounded, flat; parapodia reduced (Fig. 3J). Shell calcified, concave, constricted, with closed nuclear whorl, with ridges separated by a slight indentation (Fig. 5D). Small ampulla, slightly coiled; mucous gland faintly curved; receptaculum seminis entering the hermaphroditic duct at the middle of its length. Penial papilla with a rounded distal bulb (autapomorphy); prostatic region with two sections varying in shape and texture (autapomorphy) (Bertsch, 1972; Gosliner, 1980).
Type locality: Bahía de las Cruces, Baja California, México.
Etymology: The word ‘niparaya’ means ‘creator of everything’ in Pericú, the language of the aboriginal inhabitants of the southern part of the Baja California Peninsula (México), the type locality of N. regiscorona and is also the name of the main deity and king of the Pericú mythology. Thus, the genus name Niparaya is a metaphor for the ‘crowned slug’ N. regiscorona (‘ regiscorona ’ means king’s crown in Latin).
description: Published as part of Zamora-Silva, Andrea & Malaquias, Manuel António E., 2018, Molecular phylogeny of the Aglajidae head-shield sea slugs (Heterobranchia: Cephalaspidea): new evolutionary lineages revealed and proposal of a new classification, pp. 1-51 in Zoological Journal of the Linnean Society 183 on page 40
S&P 500 index mutual funds
Creators: name: Haslem, John
name: Baker, H
name: Smith, David
Publisher: name: American University
Year: 2023

description: The commodity-like nature of index mutual fund portfolios suggests that price competition should be more evident than with actively managed funds. After all, fund managers operate index funds not to beat their benchmarks or actively managed funds, but to mimic benchmark portfolios and performance, less expenses. Therefore, fund expenses should be singularly important in explaining and predicting differences in index fund performance. Haslem (2003) addresses the broader issues of fund expenses.
Baroque TOC: Publishing from Collections Using Computational Publishing and Linked Open Data
Creators: name: Worthington, Simon
Publisher: name: Zenodo
Year: 2023
Subjects: computational publishing
ada
nfdi4c
compim

description: Computational publishing allows executable code, visualisations, and advanced media objects to coexist alongside conventional text in a document. The focus of the project is to access a variety of distributed linked open data sources and media using Jupyter Notebooks stored on a Git repository, and then to render the publication as multi-format, as: web, PDF, eBook, Paged Media CSS, as executables, and as interoperable sources.  The remote LOD and media sources are: Wikidata, Wikibase, Fidus Writer, Nextcloud, Semantic Kompakkt,  TIB AV Portal, Thoth, and ORCiD. Made with free and open source software. Prototype publications:  An exhibition catalogue:  nfdi4culture.github.io/experimental-books-workshop/  A publishers catalogue:  simonxix.github.io/scholarled_catalogue/ Workshop programme:  nfdi4culture.github.io/workshop-publishing-from-collections/ 
Spiral arms in the disk of HD 142527 from CO emission lines with ALMA
Creators: name: Christiaens, Valentin
name: Casassus, Simon
name: Perez, Sebastian
name: van der Plas, Gerrit
name: Ménard, François
Publisher: name: arXiv
Year: 2014
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: In view of both the size of its gap and the previously reported asymmetries and near-infrared spiral arms, the transition disk of the Herbig Fe star HD 142527 constitutes a remarkable case study. This paper focuses on the morphology of the outer disk through ALMA observations of $^{12}$CO J=2-1, $^{12}$CO J=3-2 and $^{13}$CO J=2-1. Both $^{12}$CO J=2-1 and $^{12}$CO J=3-2 show spiral features of different sizes. The innermost spiral arm (S1) is a radio counterpart of the first near-infrared spiral observed by Fukagawa et al. (2006), but it is shifted radially outward. However, the most conspicuous CO spiral arm (S2) lies at the outskirts of the disk and had not been detected before. It corresponds to a cold density structure, with both brightness and excitation temperatures of order 13$\pm$2 K and conspicuous in the $^{12}$CO J=2-1 peak-intensity map, but faint in $^{12}$CO J=3-2. There is also a faint counterarm (S3), point-symmetrical of S2 with respect to the star. These three spirals are modelled separately with two different formulae that approximate the loci of density maxima in acoustic waves due to embedded planets. S1 could be fit relatively well with these formulae, compared to S2 and S3. Alternative scenarios such as gravitational instability or external tidal interaction are discussed. The impact of channelization on spectrally and spatially resolved peak intensity maps is also briefly addressed.
description: 6 pages, 3 figures, 1 table. Accepted for publication in ApJ Letters. Acknowledgments to ALMA added
Speed limits of the trace distance for open quantum system
Creators: name: Nakajima, Satoshi
name: Utsumi, Yasuhiro
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the speed limit of the state transformation in open quantum systems described by the Lindblad type quantum master equation. We obtain universal bounds of the total entropy production described by the trace distance between the initial and final states in the interaction picture. Our bounds can be tighter than the bound of Vu and Hasegawa [Phys. Rev. Lett. 126, 010601 (2021)] which measures the distance by the eigenvalues of the initial and final states: This distance is less than or equal to the trace distance. For this reason, our results can significantly improve Vu-Hasegawa's bound. The trace distance in the Schrödinger picture is bounded by a sum of the trace distance in the interaction picture and the trace distance for unitary dynamics described by only the Hamiltonian in the quantum master equation.
description: 19 pages, 2 figures
L' Endymion di Rilke, un tentativo di traduzione
Creators: name: Sparavigna, Amelia Carolina
Publisher: name: Zenodo
Year: 2018

description: L' Endymion è un componimento poetico di Rainer Maria Rilke. Rilke (Praga, 4 dicembre 1875 – Les Planches, 29 dicembre 1926), è stato uno scrittore, poeta e drammaturgo. È considerato uno dei più importanti poeti di lingua tedesca del XX secolo. Autore di opere in prosa e poesia, è famoso soprattutto per le Elegie duinesi, iniziate durante un soggiorno a Duino, i Sonetti a Orfeo e I quaderni di Malte Laurids Brigge. Ecco il testo in Tedesco dell’Endymion ed un mio tentativo di traduzione in Italiano.
Ambiguit� umoristica e mostruosit� morale in "Cuore di cane" di Michail Bulgakov
Creators: name: Mingati, Adalgisa
Publisher: name: Universit� degli Studi di Trento - Dipartimento di Lettere e Filosofia
Year: 2013

description: "HUMOROUS AMBIGUITY AND MORAL MONSTROSITY IN ?THE HEART OF A DOG? BY MICHAIL BULGAKOV Drawing inspiration from the romantic theme of the artificial man, the story of the stray dog ?arik, transformed into a human being thanks to a transplant of organs, provides Bulgakov with the opportunity to draw a satirical picture of the Soviet period of NEP. It becomes immediately clear in the story that the metamorphosis of the dog has given incomplete hybrid results: by constantly calling into discussion the human hypostasis of the dog that has recently received a transplant, a mechanism is triggered that fuels the humorous aspects of the story and alludes to the monstrosity, not only physical but particularly moral, of the new creature. In this paper attention is drawn to some linguistic-expressive peculiarities of Bulgakov?s masterpiece, also in order to find possible solutions to translation queries that the tale poses (see the translation into Italian of the incipit to Chapter VI which comes immediately before the paper).