cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Anisotropic spin transport in GaAs quantum wells in the presence of competing Dresselhaus and Rashba spin-orbit-coupling strengths
Creators: name: Cheng, J. L.
name: Wu, M. W.
name: Lima, I. C. da Cunha
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Aiming at the optimization of the spin diffusion length in (001) GaAs quantum wells, we explore the effect of the anisotropy of the spin-orbit coupling on the competition between the Rashba and the Dresselhaus spin-orbit couplings by solving the kinetic spin Bloch equations with the electron-phonon and the electron-electron scattering explicitly included. For identical strengths of the Rashba and the Dresselhaus spin-orbit couplings, the spin diffusion length shows strong anisotropy not only for the spin polarization direction but also for the spin diffusion direction. Two special directions are used seeking for the large diffusion length: ($\bar{1}$10) and (110). Without the cubic term of the Dresselhaus spin-orbit coupling and with the identical Dresselhaus and Rashba strengths, infinite diffusion lengths can be obtained {\em either} for the spin diffusion/injection direction along $(\bar110)$, regardless of the direction of spin polarization, {\em or} for the spin polarization along $(110)$, regardless of the direction of the spin diffusion/injection. However, the cubic Dresselhaus term cannot be neglected, resulting into a finite spin diffusion length which decreases with the temperature and the electron density, and of which the anisotropy for the spin diffusion direction and spin polarization direction is maintained. For the spin diffusion/injection direction along ($\bar{1}$10), the spin diffusion length increases first with the increase of the Rashba strength (from 0) which can be tuned by the external gate voltage; when the Rashba strength is slightly smaller than (in stead of equal to) the Dresselhaus strength, the diffusion length reaches its maximum; and then it decreases with the Rashba strength.
description: 8 pages, 5 figures, to be published in PRB.
Benvenuti nell’Antropocene lunare
Creators: Chiara Badia
Publisher: name: Media Inaf
Year: 2023

Rottami di lander e satelliti, bandiere, libri e altri resti di missioni spaziali, condotte dal 1959 a oggi, stanno inquinando il suolo della Luna. Secondo un team di ricerca statunitense, l’impatto antropico sul nostro satellite naturale è tale da poter affermare che siamo in una nuova era geologica. Quella in cui l’umanità, con le proprie attività, ha iniziato a modificare anche il paesaggio lunare.
Atomistic Origin of Urbach Tails in Amorphous Silicon
Creators: name: Pan, Y.
name: Inam, F.
name: Zhang, M.
name: Drabold, D. A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Exponential band edges have been observed in a variety of materials, both crystalline and amorphous. In this paper, we infer the structural origins of these tails in amorphous and defective crystalline Si by direct calculation with current {\it ab initio} methods. We find that exponential tails appear in relaxed models of diamond with suitable point defects. In amorphous silicon (a-Si), we find that structural filaments of short bonds and long bonds exist in the network, and that the tail states near the extreme edges of both band tails are are also filamentary, with much localization on the structural filaments. We connect the existence of both filament systems to structural relaxation in the presence of defects and or topological disorder.
description: 4 pages, 4 figures, submitted to Phys. Rev. Lett
Analysis and representation of Igbo text document for a text-based system
Creators: name: J., Ifeanyi-Reuben Nkechi
name: Chidiebere, Ugwu
name: Tunde, Adegbola
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: The advancement in Information Technology (IT) has assisted in inculcating the three Nigeria major languages in text-based application such as text mining, information retrieval and natural language processing. The interest of this paper is the Igbo language, which uses compounding as a common type of word formation and as well has many vocabularies of compound words. The issues of collocation, word ordering and compounding play high role in Igbo language. The ambiguity in dealing with these compound words has made the representation of Igbo language text document very difficult because this cannot be addressed using the most common and standard approach of the Bag-Of-Words (BOW) model of text representation, which ignores the word order and relation. However, this cause for a concern and the need to develop an improved model to capture this situation. This paper presents the analysis of Igbo language text document, considering its compounding nature and describes its representation with the Word-based N-gram model to properly prepare it for any text-based application. The result shows that Bigram and Trigram n-gram text representation models provide more semantic information as well addresses the issues of compounding, word ordering and collocations which are the major language peculiarities in Igbo. They are likely to give better performance when used in any Igbo text-based system.
A system of mobile agents to model social networks
Creators: name: Gonzalez, M. C.
name: Lind, P. G.
name: Herrmann, H. J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We propose a model of mobile agents to construct social networks, based on a system of moving particles by keeping track of the collisions during their permanence in the system. We reproduce not only the degree distribution, clustering coefficient and shortest path length of a large data base of empirical friendship networks recently collected, but also some features related with their community structure. The model is completely characterized by the collision rate and above a critical collision rate we find the emergence of a giant cluster in the universality class of two-dimensional percolation. Moreover, we propose possible schemes to reproduce other networks of particular social contacts, namely sexual contacts.
description: Phys. Rev. Lett. (in press)
Production experiment, subject 66
Creators: name: Lau-Preechathammarach, Raksit Tyler
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2023
Subjects: subject: kdt

description: Target and distractor stimuli embedded in carrier sentences. Subject is a 61-year-old female. Carried out in a quiet room in the temple of Wat Nakharin in Ban Khi Nak.
Marte al calar del vento solare
Creators: Giuseppe Fiasconaro
Publisher: name: Media Inaf
Year: 2023

La scomparsa attorno a un pianeta delle particelle cariche portate dal vento solare è un evento raro, che si manifesta solo quando un vento solare più veloce del primo le spazza via. La sonda Maven della Nasa ha ora registrato un simile fenomeno attorno a Marte. Si tratta di un evento osservato l'ultima volta quasi un quarto di secolo fa attorno alla Terra
Reflection Modeling of the Black Hole Binary 4U~1630$-$47: the Disk Density and Returning Radiation
Creators: name: Connors, Riley
name: García, Javier
name: Tomsick, John
name: Hare, Jeremy
name: Dauser, Thomas
name: Grinberg, Victoria
name: Steiner, James
name: Mastroserio, Guglielmo
name: Sridhar, Navin
name: Fabian, Andrew
name: Jiang, Jiachen
name: Parker, Michael
name: Harrison, Fiona
name: Kallman, Timothy
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present the analysis of X-ray observations of the black hole binary 4U~1630$-$47 using relativistic reflection spectroscopy. We use archival data from the RXTE, Swift, and NuSTAR observatories, taken during different outbursts of the source between $1998$ and $2015$. Our modeling includes two relatively new advances in modern reflection codes: high-density disks, and returning thermal disk radiation. Accretion disks around stellar-mass black holes are expected to have densities well above the standard value assumed in traditional reflection models (i.e., $n_{\rm e}\sim10^{15}~{\rm cm^{-3}}$). New high-density reflection models have important implications in the determination of disk truncation (i.e., the disk inner radius). This is because one must retain self-consistency in the irradiating flux and corresponding disk ionization state, which is a function of disk density and system geometry. We find the disk density is $n_{\rm e}\ge10^{20}~{\rm cm^{-3}}$ across all spectral states. This density, combined with our constraints on the ionization state of the material, implies an irradiating flux impinging on the disk that is consistent with the expected theoretical estimates. Returning thermal disk radiation -- the fraction of disk photons which bend back to the disk producing additional reflection components -- is expected predominantly in the soft state. We show that returning radiation models indeed provide a better fit to the soft state data, reinforcing previous results which show that in the soft state the irradiating continuum may be blackbody emission from the disk itself.
description: 20 pages, 6 figures, 6 tables, Accepted by ApJ
Krein-Space Formulation of PT-Symmetry, CPT-Inner Products, and Pseudo-Hermiticity
Creators: name: Mostafazadeh, Ali
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Emphasizing the physical constraints on the formulation of a quantum theory based on the standard measurement axiom and the Schroedinger equation, we comment on some conceptual issues arising in the formulation of PT-symmetric quantum mechanics. In particular, we elaborate on the requirements of the boundedness of the metric operator and the diagonalizability of the Hamiltonian. We also provide an accessible account of a Krein-space derivation of the CPT-inner product that was widely known to mathematicians since 1950's. We show how this derivation is linked with the pseudo-Hermitian formulation of PT-symmetric quantum mechanics.
description: published version, 17 pages
Casimir stress on parallel plates in de Sitter space with signature change
Creators: name: Setare, M R
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The Casimir stress on two parallel plates in a de Sitter background corresponding to different metric signatures and cosmological constants is calculated for massless scalar fields satisfying Robin boundary conditions on the plates. Our calculation shows that for the parallel plates with false vacuum between and true vacuum outside, the total Casimir pressure leads to an attraction of the plates at very early universe.
description: 9 pages, no figures, accepted for publication in IJMPA
Quantum dynamics and relaxation in comb turbulent diffusion
Creators: name: Iomin, Alexander
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Continuous time quantum walks in the form of quantum counterparts of turbulent diffusion in comb geometry are considered. The interplay between the backbone inhomogeneous advection $δ(y)x\partial_x$ along the $x$ axis, which takes place only at the $y=0$, and normal diffusion inside fingers $\partial_y^2$ along the $y$ axis leads to turbulent diffusion. This geometrical constraint of transport coefficients due to comb geometry and properties of a dilatation operator lead to consideration of two possible scenarios of quantum mechanics. These two variants of continuous time quantum walks are described by non-Hermitian operators of the form $\hat{\cal H}=\hat{A}+i\hat{B}$. Operator $\hat{A}$ is responsible for the unitary transformation, while operator $i\hat{B}$ is responsible for quantum/classical relaxation. At the first quantum scenario, the initial wave packet can move against the classical streaming. This quantum swimming upstream is due to the dilatation operator, which is responsible for the quantum (not unitary) dynamics along the backbone, while the classical relaxation takes place in fingers. In the second scenario, the dilatation operator is responsible for the quantum relaxation in the form of an imaginary optical potential, while the quantum unitary dynamics takes place in fingers. Rigorous analytical analysis is performed for both wave and Green's functions.
Additional file 1 of Population-level interventions targeting risk factors of diabetes and hypertension in South Africa: a document review
Creators: name: Uwimana - Nicol, Jeannine
name: Hendricks, Lynn
name: Young, Taryn
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy

description: Additional file 1. Pubmed search strategy.
Con la Mond la tensione di Hubble scompare
Creators: Maura Sandri
Publisher: name: Media Inaf
Year: 2023

Attualmente esiste un’intrigante controversia sul valore della costante di Hubble, in quanto diversi metodi di misurazione forniscono valori contraddittori. Tuttavia, secondo un recente studio pubblicato su Mnras e basato su una teoria alternativa della gravità – la Mond, acronimo di Modified Newtonian Dynamics – tale discrepanza nei valori misurati della costante scompare
One-bit Distributed Sensing and Coding for Field Estimation in Sensor Networks
Creators: name: Wang, Ye
name: Ishwar, Prakash
name: Saligrama, Venkatesh
Publisher: name: arXiv
Year: 2007
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: This paper formulates and studies a general distributed field reconstruction problem using a dense network of noisy one-bit randomized scalar quantizers in the presence of additive observation noise of unknown distribution. A constructive quantization, coding, and field reconstruction scheme is developed and an upper-bound to the associated mean squared error (MSE) at any point and any snapshot is derived in terms of the local spatio-temporal smoothness properties of the underlying field. It is shown that when the noise, sensor placement pattern, and the sensor schedule satisfy certain weak technical requirements, it is possible to drive the MSE to zero with increasing sensor density at points of field continuity while ensuring that the per-sensor bitrate and sensing-related network overhead rate simultaneously go to zero. The proposed scheme achieves the order-optimal MSE versus sensor density scaling behavior for the class of spatially constant spatio-temporal fields.
description: Fixed typos, otherwise same as V2. 27 pages (in one column review format), 4 figures. Submitted to IEEE Transactions on Signal Processing. Current version is updated for journal submission: revised author list, modified formulation and framework. Previous version appeared in Proceedings of Allerton Conference On Communication, Control, and Computing 2006
Interaction of Fermionic Matter and ECSK Black Hole with Torsion
Creators: name: Dil, Emre
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: The interactions between the spin of fermionic matter and torsion in the Einstein-Cartan-Sciama-Kibble (ECSK) theory of gravity provides a repulsive gravitational potential at the very dense states of fermionic matter, which prevents the formation of black hole singularities inside the deeper horizon. While the fermionic matter in the black hole is attracted by the black hole at the beginning, after a critical point it is repelled to bounce at a critical high density and then expand into other side of the horizon as a newly created space, which may be considered as a nonsingular, closed universe. We constructed the action of these fermions in a black hole with torsion in the framework of ECSK theory of gravity from which the free Dirac action is inferred to obtain the interaction potential. The creation of a bouncing universe with the extremely repulsive potential may be related to the running vacuum and the modified Friedmann equations yield the consistent cosmological parameters with present FRW universe. Finally, this scenario naturally solves the flatness and horizon problems of cosmology without introducing finely tuned scalar fields, or more complicated functions of the Ricci Scalar R in the gravitational action.
description: 20 pages, 1 figure, Submitted to Adv. High Energy Phys
Potenziale nutraceutico della frazione polifenolica di Cynara Scolymus
Creators: name: Giannetti, Daniela
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2015

description: E' stato studiato il potere nutraceutico di Cynara Scolymus attraverso la valutazione del profilo qualitativo e quantitativo dei metaboliti secondari, studi di bioaccessibilità in vitro della componente polifenolica bioattiva e test cellulari in vitro per valutare effetti su parametri metabolici. Sono state considerate due parti della pianta: il capolino ed il gambo. Il confronto tra cinque diversi genotipi di carciofo ha mostrato un profilo metabolomico simile, ma ha evidenziato una ricchezza maggiore del gambo rispetto al capolino corrispondente di ogni genotipo, confermata poi dai test sull'attività antiossidante. Dagli studi di bioaccessibilità in vitro è emerso che il processo di cottura al microonde innalza il contenuto polifenolico della matrice vegetale di partenza (+175,5 %), e che i polifenoli risultano poco bioaccessibili (17% in media) a causa della sensibilità alle condizioni  di digestione gastrica. I test cellulari in vitro, su cellule HepG2 mostrano che il capolino cotto di carciofo è il più attivo nell'inibire l'up-take di glucosio cellulare (+17 volte la sua quota extracellulare rispetto al controllo). Inoltre, esso è in grado di agire sul metabolismo lipidico, riducendo l'assorbimento cellulare dei trigliceridi (+109 volte il contenuto extracellulare rispetto al controllo), mediante inibizione dell'attività della lipasi pancreatica (-60% rispetto al controllo); inibendo l'up-take del colesterolo (+53 volte la sua quota extracellulare rispetto al controllo); aumentando l'assorbimento cellulare delle LDL (-75% del contenuto extracellulare rispetto al controllo); aumentando l'espressione della ApoA1 (+1400% rispetto al controllo). Infine, l'estratto polifenolico del capolino cotto svolge un'azione protettiva sulle cellule, mediante aumento della loro proliferazione (+76% rispetto al controllo), riduzione delle specie reattive dell'azoto (TBARS) (-68% rispetto al controllo) e aumento dell'ossido nitrico (NO) extracellulare (+866.6% rispetto al controllo).  I nostri risultati vogliono essere d'aiuto alle industrie produttrici di integratori alimentari, suggerendo l'applicazione di stress termici alle matrici di partenza al fine di aumentarne il contenuto di molecole bioattive; suggeriscono la formulazione dell'estratto di Cynara Scolymus in compresse o capsule gastroresistenti per preservarne la quota polifenolica; propongono l'utilizzo del gambo come matrice di partenza, in quanto fonte ricca di metaboliti bioattivi; e incoraggiano l'utilizzo di formulazioni farmaceutiche a base di Cynara Scolymus per il trattamento di diverse patologie metaboliche. Ovviamente, ulteriori studi in vivo e clinici sono necessari per confermare tali proprietà salutistiche.
Sorvegliati Spaziali a teatro
Creators: Daria Guidetti
Publisher: name: Media Inaf
Year: 2023

Una serie di video-monologhi raccontati in prima persona per dare corpo e voce agli studi di scienziate e scienziati legati alla difesa planetaria e quindi al mondo di asteroidi e comete, meteore e meteoriti, meteorologia e rifiuti spaziali. Nei primi tre episodi, in uscita su MediaInaf Tv giovedì 7, 14 e 21 dicembre, incontreremo Giovanni Virginio Schiaparelli, Maria Clara Eimmart e Giuseppe Piazzi
Cosmological chirality and magnetic fields from parity violating particle decays
Creators: name: Vachaspati, Tanmay
name: Vilenkin, Alexander
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We estimate the chirality of the cosmological medium due to parity violating decays of standard model particles, focusing on the example of tau leptons. The non-trivial chirality is however too small to make a significant contribution to the cosmological magnetic field via the chiral-magnetic effect.
description: 4 pages
Pianeti in fasce tra i ghiacci siderali del Camaleonte
Creators: Redazione Media Inaf
Publisher: name: Media Inaf
Year: 2023

Prodotta la prima mappa 2D del ghiaccio presente in un disco di polvere e gas che circonda una giovane stella e nel quale si stanno formando pianeti. Guidati da Ardjan Sturm dell’Università di Leiden (Paesi Bassi), gli autori dello studio, pubblicato ieri su Astronomy & Astrophysics, si sono avvalsi del telescopio spaziale James Webb e – per l’interpretazione degli spettri – dei dati prodotti dal Laboratorio di astrofisica sperimentale dell’Inaf di Catania
Electrification of Transportation: A Hybrid Benders/SDDP Algorithm for Optimal Charging Station Trading
Creators: name: Sohrabi, Farnaz
name: Rohaninejad, Mohammad
name: Bemš, Július
name: Hanzálek, Zdeněk
Publisher: name: arXiv
Year: 2024
Subjects: subject: Optimization and Control (math.OC)
subject: Other Computer Science (cs.OH)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: This paper examines the electrification of transportation as a response to environmental challenges caused by fossil fuels, exploring the potential of battery electric vehicles and hydrogen fuel cell vehicles as alternative solutions. However, a significant barrier to their widespread adoption is the limited availability of charging infrastructure. Therefore, this study proposes the development of comprehensive charging stations capable of accommodating both battery and hydrogen vehicles to address this challenge. The energy is purchased from the day-ahead and intraday auction-based electricity markets, where the electricity price is subject to uncertainty. Therefore, a two-stage stochastic programming model is formulated while the price scenarios are generated utilizing a k-means clustering algorithm. Given the complexity of the proposed model, an efficient solution approach is developed through the hybridization of the Benders decomposition algorithm and stochastic dual dynamic programming. In the Benders master problem, day-ahead bidding variables are determined, whereas the Benders sub-problem addresses intraday bidding and charging station scheduling variables, employing stochastic dual dynamic programming to tackle its intractability. Additionally, we transform the mixed integer linear program model of the second stage problem into a linear program, confirming its validity through KKT conditions. Our model provides practical insights for making informed decisions in electricity markets based on sequential auctions. While the bidding curves submitted to the day-ahead market remain unaffected by scenarios, those submitted to the intra-day market show dependence on fluctuations in day-ahead market prices.
HST/NICMOS Imaging Polarimetry of Proto-Planetary Nebulae II: Macro-morphology of the Dust Shell Structure via Polarized Light
Creators: name: Ueta, Toshiya
name: Murakawa, Koji
name: Meixner, Margaret
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The structure of the dusty circumstellar envelopes (CSEs) of proto-planetary nebulae (PPNs) reveals the mass-loss history of these sources and how such histories may differ for elliptical (SOLE) and bipolar (DUPLEX) PPNs. To study the PPN structures via dust-scattered linearly polarized starlight, we have compiled the imaging-polarimetric data for all 18 evolved stars that have been obtained to date with NICMOS on-board the Hubble Space Telescope (HST). This alternative imaging technique provides a unique way to probe the distribution of dust grains that scatter light around evolved stars. The new perspective gained from the imaging-polarimetric data has revealed several new aspects to the structures of PPNs. Point-symmetry is a prevalent imaging-polarimetric characteristic resulting from the azimuthal density gradient in the CSEs. Among these point-symmetric nebulae, three detailed morphological types can be differentiated by their polarized intensity, I_pol, and polarization strength, P. While the azimuthal density gradient is reversed above and below the equatorial plane in optically thicker bipolar nebulae, there is no gradient reversal in optically thinner elliptical nebulae. The equatorial plane of the system defined by the integrated angle of polarization is not necessarily orthogonal to the axis of the apparent bipolar structure in the total intensity data.
description: 27 pages, 14 figures, 3 tables; to appear in the Astronomical Journal March 2007 issue
Danger and the saving power: the political thought of Martin Heidegger
Creators: name: Cameron, Mark
Publisher: name: University of British Columbia
Year: 2009

description: This thesis considers the place of Martin Heidegger within contemporary political theory. Despite Heidegger's importance as a philosopher, Heidegger is considered highly problematic within political theory because of his association with Nazism. This thesis argues that Heidegger has been an important, if covert, influence on political thought, and that his work deserves more overt discussion. The first chapter outlines Heidegger's overall project of opposition to traditional Western metaphysics, and the role of Dasein as the locus of the experience of Being. It concludes that while Heidegger's primary goal was one of "fundamental ontology," not practical politics, that Heidegger's ontology has both ethical and political implications. The second chapter looks at Heidegger's idea of historicity, and argues that it is essential for understanding Heidegger's concept of "authenticity" which became so important for later existentialists. Heideggerian historicity is discussed in light of the Weimar "Conservative Revolution," and as a justification for his Nazism The third chapter examines the political implications two late Heideggerain concepts: technology and language. Heidegger's concept of technology as not only mere means, but as a totalizing, dehumanizing metaphysical destiny was indebted to the Conservative Revolutionary writer Ernst Junger. Heidegger's increasing conviction that political resistance to technology was futile helped cause his later turn towards poetry and mysticism. The rest of the chapter looks Heidegger's ideas of language and poetry, and notes that the nationalism in his idea that Greek and German were inherently closer to the primordial experience of Being were connected to his embrace of Nazism. The final chapter looks at the influence of these Heideggerian ideas on recent Anglo-American political theory. Through thinkers like Hannah Arendt and Charles Taylor, Heideggerian themes such as authenticity, the importance of the ancient Greek experience, and the critique of technology, have already had an influence on Anglo-American thought. The thesis concludes that Heidegger must be given greater consideration, not just in polemical debate over Heidegger's Nazism, but in theoretical discussion of the origins of many contemporary political ideas. Understanding the Heideggerian background of these ideas will raise awareness of both their positive and negative potential for future political thought and practice.
Production experiment, subject 65
Creators: name: Lau-Preechathammarach, Raksit Tyler
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2023
Subjects: subject: kdt

description: Target and distractor stimuli embedded in carrier sentences. Subject is a 61-year-old male. Carried out in a quiet room in the temple of Wat Nakharin in Ban Khi Nak.
Production experiment, subject 64
Creators: name: Lau-Preechathammarach, Raksit Tyler
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2023
Subjects: subject: kdt

description: Target and distractor stimuli embedded in carrier sentences. Subject is a 61-year-old male. Carried out in a quiet room in the temple of Wat Nakharin in Ban Khi Nak.
Another Brick in the Webb
Creators: Chiara Badia
Publisher: name: Media Inaf
Year: 2023

Un nuovo studio dell’Università della Florida, per la prima volta, ha indagato a fondo “The Brick”, la regione più opaca e misteriosa della Via Lattea. Grazie al telescopio spaziale James Webb ora sappiamo perché in quella zona nascano poche stelle: seppur ricca di monossido di carbonio ghiacciato, è comunque troppo calda rispetto alle altre nubi galattiche
A pragmatic adaptive enrichment design for selecting the right target population for cancer immunotherapies
Creators: name: Duc, Anh Nguyen
name: Heinzmann, Dominik
name: Berge, Claude
name: Wolbers, Marcel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: One of the challenges in the design of confirmatory trials is to deal with uncertainties regarding the optimal target population for a novel drug. Adaptive enrichment designs (AED) which allow for a data-driven selection of one or more pre-specified biomarker subpopulations at an interim analysis have been proposed in this setting but practical case studies of AEDs are still relatively rare. We present the design of an AED with a binary endpoint in the highly dynamic setting of cancer immunotherapy. The trial was initiated as a conventional trial in early triple-negative breast cancer but amended to an AED based on emerging data external to the trial suggesting that PD-L1 status could be a predictive biomarker. Operating characteristics are discussed including the concept of a minimal detectable difference, that is, the smallest observed treatment effect that would lead to a statistically significant result in at least one of the target populations at the interim or the final analysis, respectively, in the setting of AED.
description: 10 pages, 1 figures
METODOLOGIA PER LA RIGENERAZIONE URBANA "INTELLIGENTE, SOSTENIBILE E INCLUSIVA" ATTRAVERSO L'APPROCCIO  INTEGRATO: INDIVIDUAZIONE DEI PRINCIPI PER LA RIQUALIFICAZIONE SOSTENIBILE DEL TESSUTO URBANO DI RECENTE FORMAZIONE ATTRAVERSO LA RIGENERAZIONE DELLA CITTÀ PUBBLICA E DEL PAESAGGIO URBANO
Creators: name: Manca, Angela
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2015

description: È  stato  ampiamente  riconosciuto  che   il   modello  di  sviluppo  attuale è caratterizzato da un inaccettabile grado di insostenibilità. La sfida della sostenibilità urbana è risolvere sia i problemi sperimentati nella città che i problemi causati da esse. L'idea  di  sostenibilità  nei  modelli  urbani  comporta  l'interrelazione  degli interventi  territoriali  per  la  configurazione  della  città  con  fattori  ambientali, paesaggistici, della gestione ottimale delle risorse naturali, della promozione, coesione sociale e partecipazione cittadina.  In  situazioni  di  degrado urbano occorre quindi  indagare  sulle  potenzialità che   risiedono   nelle   aree   "negate"   della   vita   in   pubblico   ai   fini   della riconversione sostenibile della città.
 Lo studio indaga  sulle  potenzialità  della  città  pubblica, intesa  come  un sistema complesso costituito da spazi pubblici o ad uso pubblico, standard, mobilità  e  infrastrutture  tecnologiche, su cui intervenire attraverso l'approccio  integrato, ai  fini  della  individuazione  dei principi,  degli  obiettivi  e  delle  azioni  alla  base  della  RIGENERAZIONE URBANA    «intelligente,  sostenibile  e  inclusiva» (cfr. Comunicazione  della  Commissione  «Europa  2020:  Una  strategia  per  una  crescita  intelligente, sostenibile e inclusiva»,2010).
Una volta inquadrato il tema dello sviluppo  sostenibile e le caratteristiche dell'oggetto di studio – la città pubblica e il paesaggio urbano con particolare riferimento alle "periferie", ovvero al tessuto di recente formazione) – l'analisi delle politiche internazionali (politiche comunitarie e summit mondiali)  per perseguire la sostenibilità in ambiente urbano, dei contributi teorici afferenti dai vari settori disciplinari e degli esempi di "best practice" ha condotto all'individuazione e alla messa a sistema dei principi, obiettivi, e azioni sottesi alla rigenerazione urbana sostenibile perseguita mediante interventi a scala locale.
Il sistema di principi individuato da questo studio –"personalizzato"  per  ogni  contesto,  in  base  alle  peculiarità  morfologiche, paesaggistiche, climatiche, funzionali, sociali, economiche, legislative etc.  - potrebbe aiutare a fornire quel quadro urbano coerente di cui le periferie necessitano per garantire organismi urbani sostenibili.
A Bright Ultraviolet Excess in the Transitional 02es-like Type Ia Supernova 2019yvq
Creators: name: Burke, J.
name: Howell, D. A.
name: Sarbadhicary, S. K.
name: Sand, D. J.
name: Amaro, R. C.
name: Hiramatsu, D.
name: McCully, C.
name: Pellegrino, C.
name: Andrews, J. E.
name: Brown, P. J.
name: Itagaki, Koichi
name: Shahbandeh, M.
name: Bostroem, K. A.
name: Chomiuk, L.
name: Hsiao, E. Y.
name: Smith, Nathan
name: Valenti, S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present photometric and spectroscopic observations of the nearby Type Ia SN 2019yvq, from its discovery $\sim$1 day after explosion to $\sim$100 days after its peak brightness. This SN exhibits several unusual features, most notably an extremely bright UV excess seen within $\sim$5 days of its explosion. As seen in Swift UV data, this early excess outshines its "peak" brightness, making this object more extreme than other SNe with early UV/blue excesses (e.g. iPTF14atg and SN 2017cbv). In addition, it was underluminous ($M_B=-18.4$), relatively quickly declining ($Δm_{15}(B)=1.35$), and shows red colors past its early blue bump. Unusual (although not unprecedented) spectral features include extremely broad-lined and high-velocity Si absorption. Despite obvious differences in peak spectra, we classify SN 2019yvq as a transitional member of the 02es-like subclass due to its similarities in several respects (e.g. color, peak luminosity, peak Ti, nebular [Ca II]). We model this dataset with a variety of published models, including SN ejecta - companion shock interaction and sub-Chandrasekhar mass WD double detonation models. Radio constraints from the VLA place an upper limit of $(4.5 - 20) \times 10^{-8}$ M$_{\odot}$/yr on the mass-loss rate from a symbiotic progenitor, which does not exclude a red giant or main sequence companion. Ultimately we find that no one model can accurately replicate all aspects of the dataset, and further we find that the ubiquity of early excesses in 02es-like SNe Ia requires a progenitor system that is capable of producing isotropic UV flux, ruling out some models for this class of objects.
BOSHLANG'ICH SINF O'QUVCHILARIDA IJTIMOIY  USTANOVKALARNI RIVOJLANTIRISH TEXNOLOGIYASI
Creators: name: Umarova Dilafruz Anvarovna Annotatsiya:, Shahrisabz davlat pedagogika  instituti Boshlang'ich ta'lim  kafedrasi o'qituvchisi
Publisher: name: Zenodo
Year: 2024

description: Hozirgi  kunda  boshlang’ich  sinf  o’quvchilarida  ijtimoiy  ustanovkalarni rivojlantirish  davr  talabi  hisoblanadi.  Shu  o’rinda  xalqaro  tadqiqotlarga tayyorgarlik,  o’quvchilarida ijtimoiy ustanovkalarni rivojlantirishni yo’lga qo’yish muhim hisoblanadi.  Ushbu maqola boshlang’ich ta’lim tizimida Boshlang’ich sinf o’quvchilarida  ijtimoiy  ustanovkalarni  rivojlantirishning ahamiyatiga bag’ishlangan.
È l’ora della teoria postquantistica della gravità
Creators: Marco Malaspina
Publisher: name: Media Inaf
Year: 2023

È da quasi un secolo che i fisici tentano in tutti i modi di unificare le due grandi teorie del Novecento, meccanica quantistica e relatività generale, cercando di adattare – quantizzandola – quest’ultima alla prima. Ora un team guidato da Jonathan Oppenheim dello University College di Londra propone il contrario: che sia la teoria quantistica a dover subire un aggiornamento, mentre la gravità – e con essa lo spaziotempo di Einstein – può restare quella “classica”
Approccio integrato allo studio dei composti bioattivi di origine vegetale: dall'epidemiologia nutrizionale allo sviluppo di prototipi di alimenti funzionali per la prevenzione e il trattamento delle patologie cardio-metaboliche
Creators: name: Vitale, Marilena
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2015

description: Negli ultimi anni, l'interesse per i composti bioattivi di origine vegetale è aumentato in modo esponenziale perché si è compreso come essi possono influenzare in modo benefico la salute umana. I risultati di diversi studi epidemiologici e di intervento indicano che il consumo di alimenti o bevande ricchi in composti bioattivi di origine vegetale, quali cereali integrali, legumi, frutta, vegetali, noci, caffè e tè, è strettamente associato con una riduzione del rischio di sviluppo di diabete, malattie cardiovascolari e alcuni tipi di neoplasie. È anche noto che la combinazione di questi alimenti in un modello dietetico come la "Dieta Mediterranea" è ancora più efficace nella prevenzione di tali patologie rispetto al consumo dei singoli alimenti. Infatti, la sinergia tra gli alimenti che caratterizzano la Dieta Mediterranea massimizza l'effetto di tutti i meccanismi coinvolti nella prevenzione delle malattie metaboliche, come la riduzione del peso corporeo, il miglioramento della sensibilità insulinica, la riduzione dello stress ossidativo e l'infiammazione subclinica. I risultati delle diverse tematiche affrontate nella mia linea di ricerca confermano le sempre più numerose evidenze sugli effetti benefici del consumo di composti bioattivi di origine vegetale per la riduzione del rischio di sviluppo di malattie cronico-degenerative. Pertanto, risulta importante aumentare il consumo di composti bioattivi di origine vegetale tramite la nostra alimentazione. La realizzazione di prototipi di alimenti e bevande funzionali arricchiti in polifenoli rappresenta la strada migliore per ottenere un aumento del consumo di tali composti.
Fischio d’inizio per i Campionati di astronomia
Creators: Daria Guidetti
Publisher: name: Media Inaf
Year: 2023

Si è disputata oggi in tutt’Italia la fase di preselezione dei Campionati italiani di astronomia. Questa 22esima edizione registra il record assoluto di scuole iscritte, 394, per un totale, anch’esso record, di 12432 studenti. La Calabria si riafferma come la regione con più iscrizioni: 4160. Da segnalare la crescita della Campania e dell’Abruzzo
Multifluid Models for Cyclic Cosmology
Creators: name: Aref'eva, Irina
name: Frampton, Paul H.
name: Matsuzaki, Shinya
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Inspired by the Landau two-fluid model of superfluidity, we consider a similar multifluid description for cosmology where two normal fluids occur for matter and radiation respectively. For cyclic cosmology, two dark energy superfluid components turn out to be insufficient but three superfluids can lead to a sensible five-fluid model which in a certain limit becomes indistinguishable from the brane-world cyclic model proposed earlier (Baum and Frampton). Distinguishing more general five-fluid models from brane-world models for cyclic cosmology could be feasible with more accurate observational data.
description: 6 pages latex. Additional reference
Modified Hagedorn formula including temperature fluctuation - Estimation of temperatures at RHIC experiments -
Creators: name: Biyajima, M.
name: Mizoguchi, T.
name: Nakajima, N.
name: Suzuki, N.
name: Wilk, G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We have systematically estimated the possible temperatures obtained from an analysis of recent data on $p_t$ distributions observed at RHIC experiments. Using the fact that observed $p_t$ distributions cannot be described by the original Hagedorn formula in the whole range of transverse momenta (in particular above 6 GeV/c), we propose a modified Hagedorn formula including temperature fluctuation. We show that by using it we can fit $p_t$ distributions in the whole range and can estimate consistently the relevant temperatures, including their fluctuations.
description: Some misprints corrected, references updated. To be published in Eur. Phys. J. C (2006)
Spazio e struttura: il disegno delle tensioni. L'architettura di Kazuyo Sejima e Ryue Nishizawa
Creators: name: Frajese D'Amato, Carmela
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2015

description: Il seguente lavoro di ricerca vuole rispondere, pur nella assunta consapevolezza dei limiti cognitivi che le questioni poste necessariamente impongono, ad alcuni interrogativi che riguardano il rapporto spazio - struttura in architettura: "cosa vuol dire individuare ed occupare uno spazio", "in che modo lo spazio può essere occupato da una struttura".
Sulla base di tali premesse è stato sviluppato un percorso di indagine che si è avvalso di apporti multidisciplinari, riferimenti architettonici del passato e del presente accuratamente scelti all'interno del panorama occidentale prima ed orientale poi, concentrando l'attenzione sulle opere di due architetti giapponesi, Kazuyo Sejima e Ryue Nishizawa, ed in particolare sull'edificio del Rolex Learning Center a Losanna, in Svizzera.
Ciò che viene definito Disegno delle Tensioni costituisce una chiave di lettura critico - interpretativa delle implicazioni interne ed esterne che
un'architettura, con le sue specifiche connotazioni strutturali e spaziali, è in grado di generare.
La rappresentazione, momento di riflessione e conquista continue, diventa al contempo strumento di indagine, controllo e conoscenza della realtà.
Angelo Antonelli fra gli Italian Knowledge Leaders
Creators: Elisa Nichelli
Publisher: name: Media Inaf
Year: 2023

Direttore dell'Osservatorio Astronomico di Roma, sede dell'Inaf a Monte Porzio Catone, Angelo Antonelli è tra i trenta "leader intellettuali" premiati oggi a Roma, in Campidoglio, per aver promosso il nostro Paese come polo di eccellenza e di conoscenza, e per gli effetti tangibili che avrà il loro impegno nello sviluppo del settore accademico e scientifico italiano
È atteso per il 2024 il picco dell’attività solare
Creators: Maura Sandri
Publisher: name: Media Inaf
Year: 2023

Scoperta una nuova relazione tra il campo magnetico del Sole e il ciclo delle macchie solari che può aiutare a prevedere quando si verificherà il picco dell’attività solare. Secondo i ricercatori coinvolti nello studio, l’intensità massima del ciclo solare attuale è imminente: inizio 2024, con una barra di errore di circa sei mesi. Lo studio è pubblicato su Monthly Notice of the Royal Astronomical Society Letters
Eigenvalue Estimates on Bakry-Emery Manifolds
Creators: name: Charalambous, Nelia
name: Lu, Zhiqin
name: Rowlett, Julie
Publisher: name: arXiv
Year: 2020
Subjects: subject: Spectral Theory (math.SP)
subject: Analysis of PDEs (math.AP)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: We demonstrate lower bounds for the eigenvalues of compact Bakry-Emery manifolds with and without boundary. The lower bounds for the first eigenvalue rely on a generalised maximum principle which allows gradient estimates in the Riemannian setting to be directly applied to the Bakry-Emery setting. Lower bounds for all eigenvalues are demonstrated using heat kernel estimates and a suitable Sobolev inequality.
description: This is a preliminary version of the article by the same name that was subsequently revised and published in the Springer Proceedings in Mathematics & Statistics book series (PROMS, volume 119)
Dono di un pendolo “Galileo” all’Inaf di Arcetri
Creators: Antonella Gasperini e Simone Bianchi
Publisher: name: Media Inaf
Year: 2023

Mercoledì 6 dicembre viene presentato ad Arcetri un pendolo astronomico prodotto nel 1896 dall'Officina Galileo di Firenze. Lo ha donato l'ingegner Giacomo Franceschini, discendente di uno dei primi proprietari dell'azienda fiorentina. L'orologio, collocato nella cupola del telescopio Amici, ricorderà ai visitatori dell’Osservatorio l'importanza che un’accurata determinazione del tempo riveste per le osservazioni astronomiche e per tutti gli usi civili
Buchi neri supermassicci, a tavola son tutti uguali
Creators: Marco Malaspina
Publisher: name: Media Inaf
Year: 2023

Analizzando un campione di buchi neri attivi al centro di 136 galassie, un team guidato da Ilaria Ruffa della Cardiff University ha scoperto che, indipendentemente dal loro “appetito” per la materia galattica circostante, mostrano una luminosità sorprendente simile, sia a microonde che a raggi X. Una conclusione che porta anche a un metodo indiretto per stimare la massa dei buchi neri
A caccia di oggetti fantasma con Webb
Creators: Laura Leonardi
Publisher: name: Media Inaf
Year: 2023

Era stata rilevata per la prima volta come una massa luminosa dai telescopi terrestri per poi scomparire completamente nelle immagini del telescopio spaziale Hubble. Ora, l’oggetto fantasma riappare in una delle ultime immagini del James Webb Space Telescope. I risultati della scoperta sono stati pubblicati su The Astrophysical Journal
Alla ricerca dei quark oscuri al Cern
Creators: Maura Sandri
Publisher: name: Media Inaf
Year: 2023

La collaborazione Atlas ha esplorato un nuovo modo per la ricerca della materia oscura, cercando uno sbilanciamento nel momento trasverso, o energia mancante. In particolare, gli autori dello studio sono andati a caccia di getti semi-visibili, che si dovrebbero originare quando quark oscuri si legano in adroni oscuri, senza trovarli. Il risultato pone i primi limiti a questo specifico scenario di produzione di tali getti. I dettagli su Physics Letters B