cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Itinerari nella Weltliteratur: Norma e letteratura
Creators: name: Lafuente, A Cura Di Silvia
Publisher: name: Firenze University Press
Year: 2014

description:  This section consists of seven contributions from the 2012 Giornate di Studio, which have been taking place at the University of Florence since 2009: Silvia Lafuente, "Forme d’oralità costruiscono la modernità letteraria argentina nelle prime decadi del ‘900"; Arianna Fiore, "La junta luz di Juan Gelman: un oratorio contro il silenzio"; Carolina Argenta, "Oltre la Generazione del Sessanta: la poesia di Susana Thénon"; Salomé Vuelta García, "I proverbi nella traduzione italiana di La Familia de Pascual Duarte di Camilo José Cela; Andrea Carmelo Spadola, "Bilinguismo / Translinguismo nell’opera poetica di César Moro"; Coral García Rodríguez, "La formazione di una identità europea  attraverso il linguaggio: l’apolide Jorge Semprún, oppure lo spagnolo delle tre patrie"; Michela Graziani, "Trasformismi jazz nella cultura portoghese del ‘900".During the IV Giornata di Studio, the concepts of «norm» and «deviation» in literary language were discussed from a variety of standpoints: linguistic, literary, cultural, historical and social. The various lines of research chosen by the authors of the seven contributions to LEA highlight the potential of literary language in linguistic and intellectual experiences within cultural contexts. In the light of this perspective, the seven contributions offer a number of itineraries for the interpretation of modern literature from Argentina, Peru, Portugal and Spain. This section was edited by Silvia Lafuente.
description: LEA - Lingue e Letterature d'Oriente e d'Occidente, Vol 3 (2014)
Graphite and graphene as perfect spin filters
Creators: name: Karpan, V. M.
name: Giovannetti, G.
name: Khomyakov, P. A.
name: Talanana, M.
name: Starikov, A. A.
name: Zwierzycki, M.
name: Brink, J. van den
name: Brocks, G.
name: Kelly, P. J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Based upon the observations (i) that their in-plane lattice constants match almost perfectly and (ii) that their electronic structures overlap in reciprocal space for one spin direction only, we predict perfect spin filtering for interfaces between graphite and (111) fcc or (0001) hcp Ni or Co. The spin filtering is quite insensitive to roughness and disorder. The formation of a chemical bond between graphite and the open $d$-shell transition metals that might complicate or even prevent spin injection into a single graphene sheet can be simply prevented by dusting Ni or Co with one or a few monolayers of Cu while still preserving the ideal spin injection property.
Restoration of random motion degraded sonar images
Creators: name: Tseng, David Tai Hee
Publisher: name: University of British Columbia
Year: 2010

description: The problem of sonar images degraded by wave-induced random ship motion and their restoration by filtering methods is investigated. The nature of the random motion is examined in detail, and a model is set up to describe its power spectrum in terms of the sea spectrum and the ship's receptance. A sonar measurement formula and its approximated form is derived. It is shown that the approximation represents a signal with additive coloured noise process. The signal is the measured seafloor profile and is approximated by a first-order Markov process. Several filters are proposed: Kalman Filter, Recursive Least Squares Interpolating (RLSI) Filter, and Adaptive ARMA Filter. In addition, Fast Estimation Algorithm and Adaptive Algorithm are introduced to determine unknown parameters in the Kalman Filter. Simulation results are generated using these filters. Performances are found to be strongly dependent on both signal and noise characteristics, with the exception of the RLSI Filter, which is relatively independent of wind speed, the main noise parameter. Computational complexities, estimation delay and convergence rates associated with the various filters are also examined. Finally, Extended Kalman Filter and Self-Tuning Filter are proposed as possible candidates for dealing with non-stationary, time-varying degradation problem.
Comment: Performance of Double-Robust Estimators When ``Inverse Probability'' Weights Are Highly Variable
Creators: name: Robins, James
name: Sued, Mariela
name: Lei-Gomez, Quanhong
name: Rotnitzky, Andrea
Publisher: name: arXiv
Year: 2008
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: Comment on ``Performance of Double-Robust Estimators When ``Inverse Probability'' Weights Are Highly Variable'' [arXiv:0804.2958]
description: Published in at http://dx.doi.org/10.1214/07-STS227D the Statistical Science (http://www.imstat.org/sts/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Semanotus litigiosus
Creators: name: Webster, Reginald
name: McCoqrquodale, David
name: Majka, Christopher
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Semanotus
Semanotus litigiosus

description: Semanotus litigiosus (Casey, 1891) Nova Scotia: Pictou Co., Caribou Road, 11.V.1996, M LeBlanc (1, NSNR). Cumberland Co., Amherst, 10.V.1988, J. Ogden (1, JOC). Annapolis Co., Annapolis Royal, March, 1916, AGD (1, NSAC). Clytini
description: Published as part of Webster, Reginald, McCoqrquodale, David & Majka, Christopher, 2009, New records of Cerambycidae (Coleoptera) for New Brunswick, Nova Scotia, and Prince Edward Island, Canada, pp. 285-308 in ZooKeys 22 (22) on page 297, DOI: 10.3897/zookeys.22.122, http://zenodo.org/record/576540
The Secret Higgstory of the Highest Temperature during Reheating
Creators: name: Passaglia, Samuel
name: Hu, Wayne
name: Long, Andrew J.
name: Zegeye, David
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the role of the Standard Model Higgs condensate, formed during cosmological inflation, in the epoch of reheating that follows. We focus on the scenario where the inflaton decays slowly and perturbatively, so that there is a long period between the end of inflation and the beginning of radiation domination. The Higgs condensate decays non-perturbatively during this period, and we show that it heats the primordial plasma to much higher temperatures than would result from the slowly-decaying inflaton alone. We discuss the effect of this hot plasma on the thermalization of the inflaton's decay products, and study its phenomenological implications for the formation of cosmological relics like dark matter, with associated isocurvature fluctuations, and the restoration of the electroweak and Peccei-Quinn symmetries.
description: 17 pages, 4 figures; matches published version
"The numbers of Molise mountain municipalities (Italy). New data, old problems, development opportunities" di Cristiano Pesaresi
Creators: name: Puttilli, Matteo
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2015

description: Semestrale di studi e ricerche di geografia, N. 2 (2015): PROLEGÒMENA GHEOGRAPHIKÀ CROSSING “SPATIAL TURN” edited by Gino De Vecchis, Riccardo Morri, Petros Petsimeris
Geometric Phase for Non-Hermitian Hamiltonians and Its Holonomy Interpretation
Creators: name: Mehri-Dehnavi, H.
name: Mostafazadeh, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: For an arbitrary possibly non-Hermitian matrix Hamiltonian H, that might involve exceptional points, we construct an appropriate parameter space M and the lines bundle L^n over M such that the adiabatic geometric phases associated with the eigenstates of the initial Hamiltonian coincide with the holonomies of L^n. We examine the case of 2 x 2 matrix Hamiltonians in detail and show that, contrary to claims made in some recent publications, geometric phases arising from encircling exceptional points are generally geometrical and not topological in nature.
description: 22 pages, 1 figure, published version
Il futuro della Geografia: speranze e timori
Creators: name: De Vecchis, Gino
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2009

description: L’impossibilità di partecipare al Forum dei Giovani Geografi del 9
settembre 2008 non mi ha consentito di respirare l’atmosfera dell’incontro.
Potrei dire che mi è mancata l’osservazione diretta dell’evento, che è metodologicamente essenziale nella ricerca e nell’insegnamento della geografia. L’atmosfera che si vive permette, infatti, di cogliere tante
sfumature, che purtroppo si perdono senza la partecipazione. Però,
ho a disposizione una fonte essenziale, costituita da un articolo compilato
che, sebbene non pretenda “di rappresentare tutta la comunità dei
Giovani Geografi”, tuttavia è emanazione di un “gruppo che ha voluto
sperimentare una innovativa modalità di stesura realmente collettiva e
democratica”.
Mi riferisco a questo scritto, quindi, almeno in prima battuta.
description: Semestrale di studi e ricerche di geografia, N. 2 (2009)
Wilf classes of non-symmetric operads
Creators: name: Cherkasov, Andrey T.
name: Piontkovski, Dmitri
Publisher: name: arXiv
Year: 2021
Subjects: subject: Combinatorics (math.CO)
subject: Formal Languages and Automata Theory (cs.FL)
subject: Symbolic Computation (cs.SC)
subject: Algebraic Topology (math.AT)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 18M65 (Primary) 68Q45, 05A15, 05C30 (Secondary)

description: Two operads are said to belong to the same Wilf class if they have the same generating series. We discuss possible Wilf classifications of non-symmetric operads with monomial relations. As a corollary, this would give the same classification for the operads with a finite Groebner basis. Generally, there is no algorithm to decide whether two finitely presented operads belong to the same Wilf class. Still, we show that if an operad has a finite Groebner basis, then the monomial basis of the operad forms an unambiguous context-free language. Moreover, we discuss the deterministic grammar which defines the language. The generating series of the operad can be obtained as a result of an algorithmic elimination of variables from the algebraic system of equations defined by the Chomsky--Schutzenberger enumeration theorem. We then focus on the case of binary operads with a single relation. The approach is based on the results by Rowland on pattern avoidance in binary trees. We improve and refine Rowland's calculations and empirically confirm his conjecture. Here we use both the algebraic elimination and the direct calculation of formal power series from algebraic systems of equations. Finally, we discuss the connection of Wilf classes with algorithms for the Quillen homology of operads calculation.
description: 8 pages
Finalmente i giovani!
Creators: name: Salvatori, Franco
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2009

description: In occasione di una delle ultime celebrazioni del Congresso Geografico
Italiano (Italiano non Nazionale: la differenza non è di poco conto),
mi permisi di segnalare la opportunità che l’istituzione congressuale
rispondesse meglio di quanto già non facesse alle funzioni che le sono
proprie in ambito scientifico, assumendo come struttura portante
dei lavori la formulazione di tesi, attorno alle quali sviluppare la discussione
al fine di elaborare linee di lavoro che avrebbero impegnato la
comunità dei Geografi negli anni successivi, vuoi con riferimento interno,
vuoi nella proiezione esterna.
description: Semestrale di studi e ricerche di geografia, N. 2 (2009)
High-resolution infrared action spectroscopy of the fundamental vibrational band of CN+
Creators: name: Domenech, Jose L.
name: Asvany, Oskar
name: Markus, Charles R.
name: Schlemmer, Stephan
name: Thorwirth, Sven
Publisher: name: arXiv
Year: 2021
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Rotational-vibrational transitions of the fundamental vibrational modes of the $^{12}$C$^{14}$N$^+$ and $^{12}$C$^{15}$N$^+$ cations have been observed for the first time using a cryogenic ion trap apparatus with an action spectroscopy scheme. The lines P(3) to R(3) of $^{12}$C$^{14}$N$^+$ and R(1) to R(3) of $^{12}$C$^{15}$N$^+$ have been measured, limited by the trap temperature of approximately 4 K and the restricted tuning range of the infrared laser. Spectroscopic parameters are presented for both isotopologues, with band origins at 2000.7587(1) and 1970.321(1) cm$^{-1}$, respectively, as well as an isotope independent fit combining the new and the literature data.
description: 15 pages, 3 Tables, 2 figures
Legge n. 94: per evitare effetti retroattivi va permessa l’emersione di chiunque abbia un lavoro onesto, anche se irregolare
Creators: name: Casucci, Giuseppe
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2009

description: Il ddl sicurezza è diventato legge 94 ed è operativo da oltre un mese,
con provvedimenti che incidono sullo status e sulle condizioni di vita
e lavoro di chi ha deciso di cercare nel nostro Paese la chance di un
futuro migliore, per sé e per la propria famiglia.
description: Semestrale di studi e ricerche di geografia, N. 2 (2009)
The Peculiar Horizontal Branch Morphology of the Galactic Globular Clusters NGC 6388 and NGC 6441: new insights from UV observations
Creators: name: Busso, G.
name: Cassisi, S.
name: Piotto, G.
name: Castellani, M.
name: Romaniello, M.
name: Catelan, M.
name: Djorgovski, S. G.
name: Blanco, A. Recio
name: Renzini, A.
name: Rich, M. R.
name: Sweigart, A. V.
name: Zoccali, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this paper we present multiband optical and UV Hubble Space Telescope photometry of the two Galactic globular clusters NGC 6388 and NGC 6441. We have obtained the first UV color-magnitude diagrams for NGC 6388 and NGC 6441. These diagrams confirm previous results, obtained in optical bands, about the presence of a sizeable stellar population of extremely hot horizontal branch stars. At least in NGC 6388, we find a clear indication that at the hot end of the horizontal branch the distribution of stars forms a hook-like feature, closely resembling those observed in NGC 2808 and Omega Centauri. We briefly review the theoretical scenarios that have been suggested for interpreting this observational feature. We also investigate the tilted horizontal branch morphology and provide further evidence that supports early suggestions that this feature cannot be interpreted as an effect of differential reddening. We show that a possible solution of the puzzle is to assume that a small fraction - ranging between 10-20% - of the stellar population in the two clusters is strongly helium enriched (Y=0.40 in NGC 6388 and Y=0.35 in NGC 6441). The occurrence of a spread in the He abundance between the canonical value (Y=0.26) and the quoted upper limits can significantly help in explaining the whole morphology of the horizontal branch and the pulsational properties of the variable stars in the target clusters.
description: 18 pages, 11 figures, accepted in A&A
Limiti e vizi del “pacchetto” sicurezza
Creators: name: Codini, Ennio
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2009

description: Il presupposto è che la presenza di immigrati irregolari sia un pericolo
per la sicurezza. Ed è vero: gli immigrati irregolari hanno tassi di criminalità nettamente superiori a quelli degli altri immigrati e degli italiani.
Il “pacchetto”3 prevede misure più dure contro gli irregolari che dovrebbero
costringerli o convincerli a lasciare il paese e dissuadere dall’immigrazione
in Italia quanti all’estero la progettano pur non potendo
ottenere i permessi richiesti.
description: Semestrale di studi e ricerche di geografia, N. 2 (2009)
Politiche per l’immigrazione e territorio: la legge n. 94/2009
Creators: name: Cristaldi, Flavia
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2009

description: Tempi duri per gli immigrati. Con questa espressione si potrebbe
sintetizzare il probabile futuro di migliaia di cittadini stranieri attualmente
presenti sul suolo italiano. Perché l’approvazione della legge n.94/2009 rende oggi più difficile la residenza, il lavoro, l’istruzione e il godimento di altri diritti fondamentali della persona nel caso di cittadini non italiani. Immaginata per risolvere i problemi della convivenza comune, specialmente nei confronti degli immigrati extracomunitari, la legge si configura, invece, quale strumento di discriminazione sociale e territoriale. Approvata l’8 agosto 2009, la direttiva ha sollevato numerose critiche e valutazioni negative all’interno della comunità scientifica e culturale del Paese (ne sono prova i contributi qui raccolti provenienti da esponenti di diversi ambiti disciplinari e professionali ai quali si rimanda per le rispettive competenze di settore), a causa delle forti ripercussioni che si avranno soprattutto sui gruppi sociali più deboli.
description: Semestrale di studi e ricerche di geografia, N. 2 (2009)
Irregolare uguale delinquente?
Creators: name: Forti, Oliviero
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2009

description: In questi mesi l’acceso dibattito sul tema dell’immigrazione e più in
particolare sul cosiddetto pacchetto sicurezza ha indotto vari organismi,
tra cui la Caritas Italiana, ad esprimere una sostanziale preoccupazione
per il quadro normativo predisposto, in quanto fortemente pregiudizievole
per l’immigrato irregolare, oggetto, ormai da diversi mesi, di una sorta di “demonizzazione”.
L’idea di restituire sicurezza al paese, evidentemente fiaccato da una
crisi economica e sociale ormai consolidata, ha indotto le forze politiche
di maggioranza ad una scelta connotata più dall’urgenza di dare risposte
al proprio elettorato che non dalla reale consapevolezza che il fenomeno
dell’immigrazione ha una sua intrinseca complessità che non può certo essere ridotta alla semplice equazione irregolare uguale delinquente.
Se così fosse l’Italia diventerebbe in un batter d’occhio il paese con il più alto tasso di criminalità al mondo, non foss’altro che centinaia di migliaia di cittadini stranieri dediti alla collaborazione domestica e ai lavori di cura sono irregolarmente presenti sul territorio nazionale e per questo soggetti al reato di immigrazione clandestina. Senza considerare poi che i datori di lavoro che hanno alle dipendenze un immigrato senza il permesso di soggiorno sono a loro volta esposti a procedimento penale. E non è la previsione di una regolarizzazione messa su in fretta e furia che risolverà il problema, al limite ne attenuerà gli effetti.
description: Semestrale di studi e ricerche di geografia, N. 2 (2009)
Sull’ignoranza della dialettica globale - locale
Creators: name: Sobrero, Alberto
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2009

description: Che contributo, come antropologo, posso portare in poche righe al
dibattito sul cosiddetto pacchetto sicurezza? Lascio ad altri con diverse
competenze specifiche criticarne sia l’aspetto teorico giuridico, sia la
praticabilità e gli effetti prevedibilmente devastanti. Per quanto riguarda
l’intento politico penso non vi siano dubbi: dare l’immagine di un governo forte, capace di difendere gli interessi e la sicurezza degli italiani.
Un’analisi del contenuto dei giornali filo-governativi potrebbe riassumere gli articoli sulle tragedie del Mediterraneo in una sola ricorrente “unità concettuale”: “È colpa loro. Perché sono partiti?”.
Un antropologo per mestiere deve smontare i concetti e le parole di
senso comune, mostrarne la debolezza o per lo meno il sottinteso  deologico.
Per non farlo, però, nei consueti termini astratti mi richiamerò alla contorta storia legislativa sull’immigrazione. Già il fatto che in poco più di vent’anni si possano contare cinque interventi leggi e una quantità imprecisata di norme e regolamenti dà l’idea di un fallimento complessivo.
description: Semestrale di studi e ricerche di geografia, N. 2 (2009)
Glycobius speciosus
Creators: name: Webster, Reginald
name: McCoqrquodale, David
name: Majka, Christopher
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Glycobius
Glycobius speciosus

description: Glycobius speciosus (Say, 1828) New Brunswick: Kings Co., Browns Flat, 15.VIII.1974, S. Cochrane 91, NBM). Kent Co., Rexton, 5.VIII.1997, B. Julien (1, UMNB). Northumberland Co., Portage River, 16.VII.1942, FIS, Picea glauca, 42-L333 (1, AFC). York Co., Fredericton, 45.94308°N, 66.62191°W, 19.VII.2002, D.L. Sabine, silver maple floodplain forest, on Acer saccharinum L. (silver maple) log (1, NBM).
description: Published as part of Webster, Reginald, McCoqrquodale, David & Majka, Christopher, 2009, New records of Cerambycidae (Coleoptera) for New Brunswick, Nova Scotia, and Prince Edward Island, Canada, pp. 285-308 in ZooKeys 22 (22) on pages 297-298, DOI: 10.3897/zookeys.22.122, http://zenodo.org/record/576540
Le riviste scientifiche di geografia (Roma, 8 luglio 2009)
Creators: name: Forino, Giuseppe
name: Salvati, Luca
name: Sesto, Claudio
name: Belluso, Rossella
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2009

description: L’8 luglio 2009 si è tenuto a Roma il seminario “Le riviste scientifiche di
geografia. Strategie di pubblicazione, sistemi di valutazione e confronti
internazionali”, organizzato da Antonella Rondinone, Filippo Celata e Silvia
Aru con la collaborazione del Dipartimento di Studi Geoeconomici de
“La Sapienza” e della Società di Studi Geografici1. Numerosa è stata la partecipazione, non solo della comunità scientifica dei geografi italiani, ma
anche dei dottorandi di Geografia provenienti da varie sedi universitarie.
La grande partecipazione ad un appuntamento del genere riflette, a nostro
avviso, l’interesse dei giovani ricercatori al rinnovato dibattito accademico
sulle problematiche legate alla disciplina e, in particolare, ad un tema
cruciale quale le modalità di pubblicazione sulle riviste scientifiche.
description: Semestrale di studi e ricerche di geografia, N. 2 (2009)
Additional file 1 of Decoding the multicellular ecosystem of vena caval tumor thrombus in clear cell renal cell carcinoma by single-cell RNA sequencing
Creators: name: Shi, Yue
name: Zhang, Qi
name: Bi, Hai
name: Lu, Min
name: Tan, Yezhen
name: Zou, Daojia
name: Ge, Liyuan
name: Chen, Zhigang
name: Liu, Cheng
name: Ci, Weimin
name: Ma, Lulin
Publisher: name: figshare
Year: 2022
Subjects: subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer

description: Additional file 1. Supplementary Figures S1-S6 and corresponding legends.
Enforcing Policy Feasibility Constraints through Differentiable Projection for Energy Optimization
Creators: name: Chen, Bingqing
name: Donti, Priya
name: Baker, Kyri
name: Kolter, J. Zico
name: Berges, Mario
Publisher: name: arXiv
Year: 2021
Subjects: subject: Systems and Control (eess.SY)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: While reinforcement learning (RL) is gaining popularity in energy systems control, its real-world applications are limited due to the fact that the actions from learned policies may not satisfy functional requirements or be feasible for the underlying physical system. In this work, we propose PROjected Feasibility (PROF), a method to enforce convex operational constraints within neural policies. Specifically, we incorporate a differentiable projection layer within a neural network-based policy to enforce that all learned actions are feasible. We then update the policy end-to-end by propagating gradients through this differentiable projection layer, making the policy cognizant of the operational constraints. We demonstrate our method on two applications: energy-efficient building operation and inverter control. In the building operation setting, we show that PROF maintains thermal comfort requirements while improving energy efficiency by 4% over state-of-the-art methods. In the inverter control setting, PROF perfectly satisfies voltage constraints on the IEEE 37-bus feeder system, as it learns to curtail as little renewable energy as possible within its safety set.
description: Accepted at Twelfth ACM International Conference on Future Energy Systems (ACM e-Energy)
Lorentz Violation for Photons and Ultra-High Energy Cosmic Rays
Creators: name: Galaverni, Matteo
name: Sigl, Guenter
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Lorentz symmetry breaking at very high energies may lead to photon dispersion relations of the form omega^2=k^2+xi_n k^2(k/M_Pl)^n with new terms suppressed by a power n of the Planck mass M_Pl. We show that first and second order terms of size xi_1 > 10^(-14) and xi_2 < -10^(-6), respectively, would lead to a photon component in cosmic rays above 10^(19) eV that should already have been detected, if corresponding terms for electrons and positrons are significantly smaller. This suggests that Lorentz invariance breakings suppressed up to second order in the Planck scale are unlikely to be phenomenologically viable for photons.
description: 4 revtex pages, 3 postscript figures included, version published in PRL
A generalization of Cobham's Theorem
Creators: name: Durand, Fabien
Publisher: name: arXiv
Year: 2008
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 11B85

description: If a non-periodic sequence $X$ is the image by a morphism of a fixed point of both a primitive substitution $σ$ and a primitive substitution $τ$, then the dominant eigenvalues of the matrices of $σ$ and of $τ$ are multiplicatively dependent. This is the way we propose to generalize Cobham's Theorem.
Real-time 10,000 km Straight-line Transmission using a Software-defined GPU-Based Receiver
Creators: name: van der Heide, Sjoerd
name: Luis, Ruben S.
name: Puttnam, Benjamin J.
name: Rademacher, Georg
name: Koonen, Ton
name: Shinada, Satoshi
name: Awaji, Yohinari
name: Furukawa, Hideaki
name: Okonkwo, Chigo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Real-time 10,000 km transmission over a straight-line link is achieved using a software-defined multi-modulation format receiver implemented on a commercial off-the-shelf general-purpose graphics processing unit (GPU). Minimum phase 1 GBaud 4-ary quadrature amplitude modulation (QAM) signals are transmitted over 10,000 km and successfully received after detection with a Kramers-Kronig (KK) coherent receiver. 8-, 16-, 32-, and 64-QAM are successfully transmitted over 7600, 5600, 3600, and 1600 km, respectively.
description: Accepted for publication at Photonics Technology Letters
La geografia delle riviste su carta Una carta per le riviste di geografia (Roma, 23-24 settembre 2009)
Creators: name: Maggioli, Marco
name: Morri, Riccardo
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2009

description: Nel corso del 2007, in occasione dei trenta anni di pubblicazione
della rivista geografia (www.rivista-geografia.it), il Direttore responsabile
del periodico, Cosimo Palagiano, con la collaborazione di uno dei
due autori di questa nota (Riccardo Morri, nella veste di segretario di
geografia), pensarono di celebrare questo traguardo significativo, chiedendo un contributo ai Direttori in carica delle più prestigiose (per storia, tradizione e/o diffusione) riviste scientifiche di geografia.
La proposta esulava del tutto dalla richiesta di redigere un panegirico
della testata, ma mirava esplicitamente ad accogliere riflessioni, ad
ampio raggio, sul ruolo, la funzione e il significato tanto del “mestiere”
(o forse sarebbe meglio dire della “missione”) di direttore di questo genere di periodici quanto su quelli delle riviste geografiche.
I contributi furono oltremodo stimolanti, così come fu significativa
l’adesione di tutti i Direttori coinvolti1 che, nonostante i numerosi impegni,
risposero con piacere e nel merito alla sollecitazione offerta.
Questo fu solamente il primo di una serie di eventi e incontri che
segnalano un notevole fermento intorno a questo argomento. Certamente
ciò che ha contribuito a riportare in prima linea la questione delle riviste (gli ultimi interventi “organici” sugli argomenti si segnalano tra gli anni Ottanta e Novanta) è la centralità che sembrano destinati ad assumere
i criteri di valutazione della ricerca in diversi settori della vita accademica.
description: Semestrale di studi e ricerche di geografia, N. 2 (2009)
Different effects of suprathermal electrons and ions on drift instabilities in non-uniform plasmas
Creators: name: Guo, Ran
Publisher: name: arXiv
Year: 2023
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: The paper studies the drift instability in Kappa-distributed inhomogeneous plasmas. Weak inhomogeneity and local approximation are assumed. The linear dispersion relation is expressed in a novel integral representation that involves the standard plasma dispersion functions defined in Maxwellian plasmas rather than the generalized plasma dispersion function modified by the Kappa distribution. The analytical solutions of wave frequency and growth rate are derived when the wave speed is larger than the ion thermal speed but smaller than the electron thermal speed. The unstable drift mode is found to have a lower limit of wavenumber due to the suprathermal electrons, which does not exist in Maxwellian plasmas. The population of suprathermal ions affects the critical wavenumber for instability but does not determine its emergence. Moreover, the wave frequency, growth rate, and critical wavenumber are numerically solved from the dispersion relation. The results suggest that the critical wavenumber cannot be neglected with the typical parameters of space plasmas.
description: 22 pages, 4 figures. Accepted by Physics of Plasmas
Identità territoriali (Roma, 26 febbraio 2009)
Creators: name: Morri, Riccardo
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2009

description: Il 26 febbraio 2009 si sono svolti a Roma, presso la Sezione di Geografia
del Dipartimento delle Scienze dei Segni, degli Spazi e delle Culture
(AGEMUS) della Sapienza, i lavori della Giornata di Studio Interdisciplinare
sul tema “Identità territoriali”. L’incontro, rivolto a studenti e studiosi specialisti del settore, è stato organizzato da Tiziana Banini, docente di geografia culturale e geografia ambientale, in qualità di coordinatrice del Gruppo di ricerca A.Ge.I. “Identità territoriali”.
description: Semestrale di studi e ricerche di geografia, N. 2 (2009)
Il racconto dei nomi geografici Roma, 15 aprile 2009
Creators: name: Leonardi, Sandra
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2009

description: Nonostante la toponomastica venga considerata un argomento di
nicchia, l’aula “Giuseppe Dalla Vedova” di Palazzetto Mattei in Villa Celimontana, il 15 aprile 2009, era affollata. L’adesione da parte di studiosi
e non alla giornata di studi dedicata a “Il racconto dei nomi geografici”
stimola diverse riflessioni. Prima fra tutte quella legata alla necessità
che viene sempre più percepita di riappropriarsi di un’identità, intesa
sia come appartenenza territoriale che culturale. Una seconda considerazione
è collegata all’importanza insita nel conoscere il significato dei
toponimi, nel cercare di capire le relazioni che intercorrono tra il nome
e la Geografia dei luoghi. Dal dibattito è emerso, fin dai primi momenti,
che tali ragionamenti dovrebbero trasformarsi in azioni da coltivare e
diffondere tra le giovani generazioni ormai orfane di radici culturali e
partendo da questo principio la giornata si è articolata in due momenti.
description: Semestrale di studi e ricerche di geografia, N. 2 (2009)
Le Alpi che cambiano tra rischi e opportunità Il V Convegno Internazionale “Rete Montagna” (Chiavenna, 29-30 maggio 2009)
Creators: name: Morri, Riccardo
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2009

description: Nella splendida cornice di Chiavenna (29 maggio) e di Castasegna
(30 maggio) si sono svolti i lavori del Convegno Le Alpi che cambiano
tra rischi e opportunità, sapientemente organizzati e guidati da Guglielmo
Scaramellini (Università di Milano) e da Ester Cason Angelini (Fondazione Angelini di Belluno). I numerosi studiosi intervenuti hanno offerto una disamina particolarmente interessante del complesso mosaico dello scenario alpino da molteplici punti di vista disciplinare.
description: Semestrale di studi e ricerche di geografia, N. 2 (2009)
Recensioni a:
Creators: name: VV., AA.
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2009

description: • Ester Cason Angelini (a cura di), Paul Guichonet e lo studio delle Alpi (G. De Vecchis)
• Marina Fuschi, Gerardo Massimi (a cura di), Toponomastica italiana. L’eredità storica e le nuove tendenze (M. G. Arcamone)
• Guido Luisi, Elementi di cartografia. Con applicazioni pratiche per l’analisi del territorio (S. Leonardi)
• Maria Tinacci Mossello, Politica dell’ambiente (R. Morri)
• Paola Presciuttini, Toponimi costieri italiani nella cartografia dell’Istituto Idrografico della Marina (G. Calafiore)
• Franco Salvatori (a cura di), Il Mediterraneo delle città. Scambi, confronti, culture, rappresentazioni (M. Maggioli)
description: Semestrale di studi e ricerche di geografia, N. 2 (2009)
Theoretical Prediction of the Effective Dynamic Dielectric Constant of Disordered Hyperuniform Anisotropic Composites Beyond the Long-Wavelength Regime
Creators: name: Kim, Jaeuk
name: Torquato, Salvatore
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optics (physics.optics)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Torquato and Kim [Phys. Rev. X 11, 296 021002 (2021)] derived exact nonlocal strong-contrast expansions of the effective dynamic dielectric constant tensor that treat general three-dimensional (3D) two-phase composites, which are valid well beyond the long-wavelength regime. Here, we demonstrate that truncating this general rapidly converging series at the two- and three-point levels is a powerful theoretical tool for extracting accurate approximations suited for various microstructural symmetries. We derive such closed-form formulas applicable to transverse polarization in layered media and transverse magnetic polarization in transversely isotropic media, respectively. We use these formulas to estimate effective dielectric constant for models of 3D disordered hyperuniform layered and transversely isotropic media: nonstealthy hyperuniform and stealthy hyperuniform (SHU) media. In particular, we show that SHU media are perfectly transparent (trivially implying no Anderson localization, in principle) within finite wave number intervals through the third-order terms. For these two models, we validate that the second-order formulas, which depend on the spectral density, are already very accurate well beyond the long-wavelength regime by showing very good agreement with the finite-difference time-domain simulations. The high predictive power of the second-order formulas implies that higher-order contributions are negligibly small, and thus, it very accurately approximates multiple scattering effects. Therefore, there can be no Anderson localization in practice within the predicted perfect transparency interval in SHU media because the localization length should be very large compared to any practically large sample size. Our predictive theory provides a foundation for the inverse design of novel effective wave characteristics of disordered and statistically anisotropic structures.
description: 16 pages, 7 figures
Travunijana gloeri Grego 2020, sp. nov.
Creators: name: Grego, Jozef
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Littorinimorpha
Hydrobiidae
Travunijana
Travunijana gloeri

description: Travunijana gloeri sp. nov.
urn:lsid:zoobank.org:act: 2A411831-BA56-490B-8754-80A0A0EE048F
Figs 9 K–L,15D
Type material
Holotype
BOSNIA AND HERCEGOVINA • 1 shell; Republika Srpska, Bileća Municipality, Berkovići, Vrelo “Vrijeka” in Dabarsko Polje NW of Bjeljani (Fig. 3A); 43°04′28.9″ N, 18°14′20.6″ E; 498 m a.s.l.; 22 Apr. 2019; J. Grego, G. Jakab, M. Olšavský and M. Kováčiková leg.; HNHM-MOLL-104418/1.
Paratypes
BOSNIA AND HERCEGOVINA • 10 shells; same data; HNHM-MOLL-104419/1, SBMNH 632722/1, coll. Grego /8, coll. Glöer /1 • 2 shells; same locality as for holotype; D. Angyal, J. Grego, G. Jakab and M. Olšavský leg.; coll. Grego /2.
Other material
BOSNIA AND HERCEGOVINA • 6 shells; Republika Srpska, Bileća Municipality, Orahovice, Estavela “Obod” in Fatničko Polje; leg. 22 Apr. 2019; J. Grego, G. Jakab, M. Olšavský and M. Kováčiková; 43.018543° N, 18.348643° E; coll. Grego /9.
Dimensions
Holotype: H 3.38 mm; W 1.96 mm; BH 2.23 mm; BW 1.56 mm; AH 1.51 mm; AW 1.29 mm.
Paratype: H 3.38 mm; W 1,87 mm; BH 2.31 mm; BW 1.60 mm; AH 1.42 mm; AW 1.24 mm.
Etymology
Named after my friend and renowned malacologist Peter Glöer from Hetlingen, Germany, who largely contributed to the freshwater gastropod fauna of the Balkans.
Description
Inflated conical 3.38 mm-high shell with dominant convex body whorl. Light yellowish corneous shell with smooth shiny surface, weak close-set axial ribs and 4.5 convex whorls separated by a weak suture. Protoconch surface smooth, weakly and distantly pitted with larger weak malleation over the pitting. Apex blunt and flat. Umbilicus closed. Elongate asymmetric-oval aperture attached to the body whorl by a weak sulcus. Peristome callous and blunt, not reflexed. Outer lip almost flat at and weakly sinuated at columellar profile. Aperture profile aligned with the body whorl and with the evenly tapering whorls at basal view.
Differentiating features
The shells of T. gloeri sp. nov. differ from T. ovalis (Fig. 7 I–K) from spring of Bunica River near Hodbina (but not found in Vrelo “Buna” as declared by Kuščer (1933) as its type locality) by its more slender shell shape, closed umbilicus and more flat protoconch. From the type species T. vruljakensis it differs by adapically more protruded and differently shaped aperture, by more coarsely ribbed teleoconch surface and by more smooth protoconch surface. Shell morphometry comparison with the related Travunijana species is presented in the Table 4.
Habitat
See habitat of P. reischuetzorum sp. nov.
Distribution
The new species is known only from the type locality.
description: Published as part of Grego, Jozef, 2020, Revision of the stygobiont gastropod genera Plagigeyeria Tomlin, 1930 and Travunijana Grego & Glöer, 2019 (Mollusca; Gastropoda; Moitessieriidae and Hydrobiidae) in Hercegovina and adjacent regions, pp. 1-56 in European Journal of Taxonomy 691 on pages 46-52, DOI: 10.5852/ejt.2020.691, http://zenodo.org/record/3961840
La geografia culturale di Francesco Algarotti
Creators: name: Finodi, Armando
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2017

description: The Venetian man of letters Francesco Algarotti (1712-1764) had an
academic and cosmopolitan education, refined in Paris and in London,
as well as at the courts of Friedrich II of Prussia and August III of
Poland. What emerges from Algarotti’s works is a suggestive cultural
geography: the Andin America, which according to him indirectly reflected
European politics; China, which he admired yet never mythicizes;
Africa, yet to be exploited for its geographic position and resources; and the Southern countries. And then Europe: England, the “true emporium and core of the world”; Italy, the “country of antiques” which he hoped would thrive in a deep cultural renovation; France, a “great united nation” in comparison to which Italians were “servants and divided”; Prussia, split between militarism and reformation; the economically flourishing Holland; Sweden, devoted to manufacturing and sea trade thanks to its constitutional government; Poland, incapable of self-governing and therefore land of invasions; all the way to Russia and its indisputable role in Europe. In fact, Algarotti visited the court of St. Petersburg in 1739 after a diplomatic mission to England, gathering his impressions in the volume Giornale del Viaggio da Londra a Petersbourg, a journal revised twenty years later in Viaggi di Russia, his most appreciated work.

Le lettré vénitien Francesco Algarotti (1712-64) eut une formation
académique et cosmopolite affinée à Paris et à Londres et au service
des cours de Frédéric II de Prusse et d’Auguste III de Pologne. Des
oeuvres d’Algarotti ressort une géographie culturelle évocatrice: L’Amérique
andine où il voit indirectement des aspects de la politique européenne,
la Chine admirée mais sans mythifications, l’Afrique à exploiter
pour sa position géographique et ses ressources, les Terres Australes.
Et puis l’Europe: l’Angleterre, “véritable marché et centre du monde”,
l’Italie “pays des antiquités” pour laquelle il souhaitait un profond renouvellement culturel, la France “nation grande et unie” face a laquelle
les Italiens sont “soumis et divisés”, la Prusse partagée entre militarisme
et réformes, la prospérité économique de la Hollande, la Suède vouée
aux manufactures et au commerce maritime grâce à son gouvernement
constitutionnel, la Pologne incapable de se gouverner d’elle même et
donc terre de conquête, pour terminer avec la Russie et son controversé
nouveau rôle en Europe. Algarotti put en effet visiter la cours de
Saint-Pétersbourg en 1739, à la suite d’une mission de représentants anglais: le vénitien recueillit ses impressions dans le Giornale del Viaggio
da Londra a Petersbourg, un journal de voyage remanié vingts ans
après dans les Viaggi di Russia, son livre le plus apprécié.
description: Semestrale di studi e ricerche di geografia, N. 1 (2009)
Tre secoli raccontati nelle piante storiche di Roma
Creators: name: Palagiano, Cosimo
name: Leonardi, Sandra
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2017

description: The present work stems from the study of historical Roman maps,
maps of Rome that are artistic masterpieces but also useful documents
in retracing the urban, architectonic, social and economic growth in
the eternal city. This is just an example of the spatial analysis that can
be made with historical maps, which are rich in information and full of
important details that can be studied one by one. In this article we
have examined the urban changes and the water distribution inside
the ancient wall of Rome, using the maps of the XVIth, XVIIth and
XVIIIth centuries. Not confining ourselves to the most famous maps
such as the work of E. Du Perac, A. Tempesta, G. Maggi and G.B. Falda,
we also analyzed those less well-known, but yet useful for achieving
our purpose.

Ce travail est le fruit d’une observation des cartes historiques de Rome,
de véritables chefs d’oeuvre artistiques mais aussi de témoignages
utiles pour connaitre l’évolution urbaine, architectonique, sociale, et
économique de la ville éternelle. Ce que l’on désire suggérer ici, est
seulement un exemple d’analyse de l’espace conduit, en employant
des cartes riches d’informations et de détails qui pourraient être étudiées
une par une.
A propos de cet article, nous avons examiné les changements urbains
et la distribution de l’eau au sein des murs Auréliens à travers l’observation des plans du XVI, XVII siècles. Ceci, sans nous limiter uniquement aux plus célèbres comme celles réalisées par E. Du Perac, A.
Tempesta, G. Maggi, et G.B. Falda, mais en nous intéressant également
à celles moins connues, et néanmoins utiles, afin d’atteindre notre objectif.
description: Semestrale di studi e ricerche di geografia, N. 1 (2009)
Scintillation timescale measurement of the highly active FRB20201124A
Creators: name: Main, R. A.
name: Hilmarsson, G. H.
name: Marthi, V. R.
name: Spitler, L. G.
name: Wharton, R. S.
name: Bethapudi, S.
name: Li, D. Z.
name: Lin, H. -H.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Scintillation of compact radio sources results from the interference between images caused by multipath propagation, and probes the intervening scattering plasma and the velocities of the emitting source and scattering screen. In FRB20201124A, a repeating fast radio burst (FRB) which entered a period of extreme activity, we obtained many burst detections in observations at the upgraded Giant Metrewave Radio Telescope (uGMRT) and the Effelsberg 100\,m Radio Telescope. Bursts nearby in time show similar scintillation patterns, and we measure a scintillation timescale of $14.3\pm1.2$\,min and $7\pm2$\,min at Effelsberg (1370\,MHz) and uGMRT (650\,MHz), respectively, by correlating burst pair spectra. The scintillation bandwidth scaled to 1\,GHz is $0.5\pm0.1$\,MHz, and the inferred scintillation velocity at Effelsberg is $V_{\mathrm{ISS}}\approx (59\pm7) \sqrt{d_{l}/2\,\rm{kpc}}~{\rm km~s}^{-1}$, higher than Earth's velocity for any screen beyond a lens distance of $d_{l} \gtrsim 400\,$pc. From the measured scintillation bandwidth, FRB20201124A has comparatively lower scattering than nearby pulsars, and is underscattered by a factor of $\sim 30$ or $\sim 1200$ compared to the NE2001 and YMW16 model predictions respectively. This underscattering, together with the measured scintillation velocity are consistent with a scattering screen more nearby the Earth at $d_{l} \sim 400\,$pc, rather than at the 2\,kpc spiral arm which NE2001 predicts to be the dominant source of scattering. With future measurements, the distance, geometry, and velocity of the scattering screen could be obtained through modelling of the annual variation in $V_{\rm ISS}$, or through inter-station time delays or interferometric observations. Scintillation/scattering measurements of FRBs could help improve Galactic electron density models, particularly in the Galactic halo or at high Galactic latitudes.
description: 9 pages, 9 figures, Accepted for publication in MNRAS