cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Supersymmetry Breaking from a Calabi-Yau Singularity
Creators: name: Berenstein, D.
name: Herzog, C. P.
name: Ouyang, P.
name: Pinansky, S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We conjecture a geometric criterion for determining whether supersymmetry is spontaneously broken in certain string backgrounds. These backgrounds contain wrapped branes at Calabi-Yau singularites with obstructions to deformation of the complex structure. We motivate our conjecture with a particular example: the $Y^{2,1}$ quiver gauge theory corresponding to a cone over the first del Pezzo surface, $dP_1$. This setup can be analyzed using ordinary supersymmetric field theory methods, where we find that gaugino condensation drives a deformation of the chiral ring which has no solutions. We expect this breaking to be a general feature of any theory of branes at a singularity with a smaller number of possible deformations than independent anomaly-free fractional branes.
description: 32 pages, 6 figures, latex, v2: minor changes, refs added
343_0376_0549_000367.pdf
Creators: name: Aghera, Ronak
Publisher: name: figshare
Year: 2021
Subjects: subject: 120202 Building Science and Techniques
subject: FOS: Civil engineering

description: Individual device loads and energy consumption feedback is one of the important approaches for pursuing users to save energy in residences. This can help in identifying faulty devices and wasted energy by devices when left On unused. The main challenge is to identity and estimate the energy consumption of individual devices without intrusive sensors on each device. Non-intrusive load monitoring (NILM) or energy disaggregation, is a blind source separation problem which requires a system to estimate the electricity usage of individual appliances from the aggregated household energy consumption. In this paper, we propose a novel deep neural network-based approach for performing load disaggregation on low frequency power data obtained from residential households. We combine a series of one-dimensional Convolutional Neural Networks and Long Short Term Memory (1D CNN-LSTM) to extract features that can identify active appliances and retrieve their power consumption given the aggregated household power value. We used CNNs to extract features from main readings in a given time frame and then used those features to classify if a given appliance is active at that time period or not. Following that, the extracted features are used to model a generation problem using LSTM. We train the LSTM to generate the disaggregated energy consumption of a particular appliance. Our neural network is capable of generating detailed feedback of demand- side, providing vital insights to the end-user about their electricity consumption. The algorithm was designed for low power offline devices such as ESP32. Empirical calculations show that our model outperforms the state-of-the-art on the Reference Energy Disaggregation Dataset (REDD).
Existence of a Phase with Finite Localization Length in the Double Scaling Limit of N-Orbital Models
Creators: name: Sacksteder, Vincent E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Among the models of disordered conduction and localization, models with $N$ orbitals per site are attractive both for their mathematical tractability and for their physical realization in coupled disordered grains. However Wegner proved that there is no Anderson transition and no localized phase in the $N \rightarrow \infty$ limit, if the hopping constant $K$ is kept fixed. Here we show that the localized phase is preserved in a different limit where $N$ is taken to infinity and the hopping $K$ is simultaneously adjusted to keep $N \, K$ constant. We support this conclusion with two arguments. The first is numerical computations of the localization length showing that in the $N \rightarrow \infty$ limit the site-diagonal-disorder model possesses a localized phase if $N\,K$ is kept constant, but does not possess that phase if $K$ is fixed. The second argument is a detailed analysis of the energy and length scales in a functional integral representation of the gauge invariant model. The analysis shows that in the $K$ fixed limit the functional integral's spins do not exhibit long distance fluctuations, i.e. such fluctuations are massive and therefore decay exponentially, which signals conduction. In contrast the $N\,K$ fixed limit preserves the massless character of certain spin fluctuations, allowing them to fluctuate over long distance scales and cause Anderson localization.
La Power Board per la Stringa Antares a Capo Passero
Creators: name: Cresta, Massimiliano
name: Piombo, Davide
name: Pratolongo, Fabio
Publisher: name: INFN Open Access Repository
Year: 2008

description: Il presente documento é il rapporto riguardante i test di funzionamento svolti sulla scheda in oggetto, tali test sono orientati alla verifica della corretta operatività e ad una stima di affidabilità della scheda. I risultati riportati sono ottenuti in condizione di sovraccarico, per un periodo continuativo di una settimana. La stabilità dimostrata dalla scheda durante tutto il periodo indica un ottimo margine di affidabilità nelle normali condizioni operative.
A Pair of Smarandachely Isotopic Quasigroups and Loops of the Same Variety
Creators: name: Jaiyeola, Temitope Gbolahan
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Mathematics (math.GM)
subject: FOS: Mathematics
subject: 20NO5; 08A05

description: The isotopic invariance or universality of types and varieties of quasigroups and loops described by one or more equivalent identities has been of interest to researchers in loop theory in the recent past. A variety of quasigroups(loops) that are not universal have been found to be isotopic invariant relative to a special type of isotopism or the other. Presently, there are two outstanding open problems on universality of loops: semi automorphic inverse property loops(1999) and Osborn loops(2005). Smarandache isotopism(S-isotopism) was originally introduced by Vasantha Kandasamy in 2002. But in this work, the concept is re-restructured in order to make it more explorable. As a result of this, the theory of Smarandache isotopy inherits the open problems as highlighted above for isotopy. In this short note, the question 'Under what type of S-isotopism will a pair of S-quasigroups(S-loops) form any variety?' is answered by presenting a pair of specially S-isotopic S-quasigroups(loops) that both belong to the same variety of S-quasigroups(S-loops). This is important because pairs of specially S-isotopic S-quasigroups(e.g Smarandache cross inverse property quasigroups) that are of the same variety are useful for applications(e.g cryptography).
description: 10 pages
A Wide-field Hubble Space Telescope Survey of the Cluster Cl 0024+16 at z=0.4. III: Spectroscopic Signatures of Environmental Evolution in Early Type Galaxies
Creators: name: Moran, Sean M.
name: Ellis, Richard S.
name: Treu, Tommaso
name: Smail, Ian
name: Dressler, Alan
name: Coil, Alison L.
name: Smith, Graham P.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report results from a panoramic spectroscopic survey of 955 objects in the field of the rich cluster Cl 0024+1654 (z~0.4), complementing the HST imaging presented in the first paper in this series. Our new spectroscopic sample includes over 200 high quality spectra of cluster members, spread across an area 10 Mpc in diameter. We examine the properties of a large sample of 104 cluster early-types as a function of cluster radius and local density, using them as sensitive tracers of the various physical processes that may be responsible for galaxy evolution. By constructing the Fundamental Plane of Cl 0024, we infer an evolution in the mean mass to light ratio of early-types equal to Δ = -0.14 +- 0.02. In the cluster center, we detect a significantly increased scatter in the relationship compared to that seen in local clusters. Moreover, we observe a clear radial trend in the mass to light ratios of individual early types, with the oldest galaxies located in the cluster core. Galaxies are apparently younger at larger radius, with E+S0s in the periphery having M/L_V ratios that nearly match values seen in the field at a similar redshift. Independent spectral indicators used in combination reveal an abrupt interaction with the cluster environment which occurs near the virial radius of Cl 0024, revealed by small bursts of star formation in a population of dim early-types, as well as by enhanced Balmer absorption for a set of larger E+S0s closer to the cluster core. We construct a simple infall model used to compare the timescales and strengths of the observed interactions in this cluster. We examine the possibility that bursts of star formation are triggered when galaxies suffer shocks as they encounter the intra-cluster medium, or by the onset of galaxy harassment.
description: 27 pages, 14 figures, Accepted by ApJ
Seesaw Right Handed Neutrino as the Sterile Neutrino for LSND
Creators: name: Mohapatra, R. N.
name: Nasri, S.
name: Yu, Hai-Bo
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We show that a double seesaw framework for neutrino masses with $μ-τ$ exchange symmetry can lead to one of the righthanded seesaw partners of the light neutrinos being massless. This can play the role of a light sterile neutrino, giving a $3+1$ model that explains the LSND results. We get a very economical scheme, which makes it possible to predict the full $4\times 4$ neutrino mass matrix if CP is conserved. Once CP violation is included, effect of the LSND mass range sterile neutrino is to eliminate the lower bound on neutrinoless double beta decay rate which exists for the three neutrino case with inverted mass hierarchy. The same strategy can also be used to generate a natural $3+2$ model for LSND, which is also equally predictive for the CP conserving case in the limit of exact $μ-τ$ symmetry.
description: 13 pages and one figure; model extended to 3+2 case
BA.SE.: Idee per un Backup Semplificato
Creators: name: G. Barbagallo
name: M. Carboni
name: D. Cobai
name: R. Ferrari
name: F. Ferrera M. Gambetti
name: F. Prelz
name: I. Saccarola
name: C. Strizzolo
name: L. Strizzolo
Publisher: name: INFN Open Access Repository
Year: 2000

description: I prodotti commerciali di backup non forniscono una copertura completa delle esigenze di backup identificate all'interno dei servizi calcolo dell'INFN. L'integrazione di compo-nenti esistenti di pubblico dominio con una struttura di storage estremamente semplifi-cata (e resa possibile dal basso costo delle unità a disco in ambiente PC) sembra fornire un'alternativa pratica ed accessibile. Presentiamo le caratteristiche di un simile sistema.
Acqua Pesante (D2o) Irradiata: Dal Reattore Nucleare Alla Cellula
Creators: name: C. Catena
name: D. Pomponi
name: G.Trenta
name: F.Celani
name: P. Marini
name: G. De Rossi
name: E. Righi
Publisher: name: INFN Open Access Repository
Year: 2004

description: Summary: Researches curried out to justify the strong pH variability of D2O utilized to overloading deuterium in palladium and to investigate the reason for the disappearance of mercury dispersed in the electrolytic solution to patch the microslit of palladium wires, leaded us to a discovery of a new bacterial species, we named: Ralstonia detusculanense e Stenotrophomonas detusculanens; they turned out to be responsible of the noticed anomalies. Therefore, to remove these inconveniences, we sterilized the D2O using high doses of gamma radiation. Hall this was a solid justification to start an experimental study to compare the biological effects of D2O not irradiated and irradiated at high doses. This research clearly demonstrated a greater increase of the biological effects due to irradiated with respect to the non irradiated heavy water. This greater effectiveness was evaluated by means of the cell survival reduction and of the apoptosis increase. At the same time the experiment indicates that normal irradiated water loss in time hits efficacy in a greater extent with respect to the heavy irradiated water. Looking at the experimental results the question comes out on what mechanisms could be responsible of the cellular lethal damages at low concentrations of heavy irradiated water. We are pointing out our attention on deuterated free radicals and on the possibility of their implications in some biological structures or processes. A further aspect that came out was the persistence in the long run of the high cytotoxic efficacy of irradiated D2O. This 'radiomimetic' behaviour of irradiated D2O is justifying the experimental extension to the molecular compounds produced by irradiation (ROS or/and other molecules); we intend reach this aim through chemical-physical methodologies and, at the same time, we hope also to obtain useful indications on cellular interaction mechanisms involved in the specific field of  cancer cell lethality.
Tavis-Cummings model and collective multi-qubit entanglement in trapped ions
Creators: name: Retzker, A.
name: Solano, E.
name: Reznik, B.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a method of generating collective multi-qubit entanglement via global addressing of an ion chain following the guidelines of the Tavis-Cummings model, where several qubits are coupled to a collective motional mode. We show that a wide family of Dicke states and irradiant states can be generated by single global laser pulses, unitarily or helped with suitable postselection techniques.
description: 6 pages, 3 figures. Accepted for publication in Physical Review A
Trapping cold Atoms by Quantum Reflection
Creators: name: Jurisch, Alexander
name: Rost, Jan-Michael
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We examine the properties of a quantum reflection trap when particle-interaction is included. We explore the influence of the particle-interaction on the trapping for different regimes: repulsive particle-interaction and attractive particle-interaction in its stable and unstable limit. With variational techniques, we calculate the phase-diagram of the quatum reflection trap and determine the stable and unstable regimes of the system.
description: 10 pages, 7 figures
Cosmic Acceleration in an Extended Brans-Dicke-Higgs Theory
Creators: name: Chakrabarti, Soumya
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider an extended scalar-tensor theory of gravity where the action has two interacting scalar fields, a Brans-Dicke field which makes the effective Newtonian constant a function of coordinates and a Higgs field which has derivative and non-derivative interaction with the lagrangian. There is a non-trivial interaction between the two scalar fields which dictates the dominance of different scalar fields in different era. We investigate if this setup can describe a late-time cosmic acceleration preceded by a smooth transition from deceleration in recent past. From a cosmological reconstruction technique we find the scalar profiles as a function of redshift. We find the constraints on the model parameters from a Markov Chain Monte Carlo analysis using observational data. Evolution of an effective equation of state, matter density contrast and thermodynamic equilibrium of the universe are studied and their significance in comparison with a LCDM cosmology is discussed.
description: 15 Pages, 12 Figures, To Appear in MNRAS
Cloud Radar : Radar Airborne per Misure in Nube. Note di Calcolo sul Sistema di Puntamento
Creators: name: V. Carassiti
name: F. Evangelisti
name: V. Carassiti
name: F. Evangelisti
name: M. Furini
name: L. Landi
name: M. Melchiorri
name: S. Squerzanti
name: R. Malaguti
name: S. Mantovani
name: C. Pennini
Publisher: name: INFN Open Access Repository
Year: 2004

description: E' stato realizzato un sistema di movimentazione per il puntamento del cloud radar, uno strumento che utilizza l'effetto doppler per analizzare ostacoli metereologici. Una parabola trasmittente ed una ricevente analizzano una porzione di spazio nella direzione dell'ostacolo da analizzare. La movimentazione della struttura di alloggiamento delle parabole è ottenuta con due assi controllati. Il cloud radar è di proprietà dell'Agenzia Spaziale Italiana (ASI) che ne ha finanziato il progetto. La seguente nota descrive il calcolo del sistema di puntamento.
Splittings of generalized Baumslag-Solitar groups
Creators: name: Forester, Max
Publisher: name: arXiv
Year: 2005
Subjects: subject: Group Theory (math.GR)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 20E08 (primary) 20F10, 20E34, 57M07 (secondary)

description: We study the structure of generalized Baumslag-Solitar groups from the point of view of their (usually non-unique) splittings as fundamental groups of graphs of infinite cyclic groups. We find and characterize certain decompositions of smallest complexity (`fully reduced' decompositions) and give a simplified proof of the existence of deformations. We also prove a finiteness theorem and solve the isomorphism problem for generalized Baumslag-Solitar groups with no non-trivial integral moduli.
description: 20 pages; hyperlinked latex. Version 2: minor changes
Higher order semiparametric frequentist inference with the profile sampler
Creators: name: Cheng, Guang
name: Kosorok, Michael R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 62G20, 62F25 (Primary) 62F15, 62F12 (Secondary)

description: We consider higher order frequentist inference for the parametric component of a semiparametric model based on sampling from the posterior profile distribution. The first order validity of this procedure established by Lee, Kosorok and Fine in [J. American Statist. Assoc. 100 (2005) 960--969] is extended to second-order validity in the setting where the infinite-dimensional nuisance parameter achieves the parametric rate. Specifically, we obtain higher order estimates of the maximum profile likelihood estimator and of the efficient Fisher information. Moreover, we prove that an exact frequentist confidence interval for the parametric component at level $α$ can be estimated by the $α$-level credible set from the profile sampler with an error of order $O_P(n^{-1})$. Simulation studies are used to assess second-order asymptotic validity of the profile sampler. As far as we are aware, these are the first higher order accuracy results for semiparametric frequentist inference.
description: Published in at http://dx.doi.org/10.1214/07-AOS523 the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
High speed escape from a circular orbit
Creators: name: Blanco, Philip
name: Mungan, Carl
Publisher: name: arXiv
Year: 2020
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: You have a rocket in a high circular orbit around a massive central body (a planet, or the Sun) and wish to escape with the fastest possible speed at infinity for a given amount of fuel.
description: 8 pages, 3 figures, accepted for publication (may differ slightly from final published form)
Manuale di Installazione di un Servizio di Posta Elettronica Completo di Filtri Anti-Virus e Anti-Spam
Creators: name: Bar, Giorgio
name: D'Ambrosio, Alberto
name: Giovanni, Franca De
Publisher: name: INFN Open Access Repository
Year: 2005

description: Con il completamento della ristrutturazione dei servizi di calcolo centrali della Sez. INFN di Torino e dei Dipartimenti di Fisica dell'Università (Rif. INFN/TC-02/23 del 16/09/2002, più successivo lavoro di aggiornamento), si è colta l'occasione per redigere un manuale dettagliato di installazione del più complesso di questi servizi, quello di Posta Elettronica. Le istruzioni qui contenute, pur facendo riferimento alla piattaforma Unix da noi utilizzata (Tru64-UNIX 5.1A for Alpha) ed alla configurazione locale, hanno comunque validità generale per qualunque altra piattaforma Unix, e sono state redatte avvalendosi della collaborazione del Gruppo di Lavoro SEC-MAIL del GARR.
Operation of Multiple Accelerating Structures in an X-Band High-Gradient Test Stand
Creators: name: Millar, Lee
Publisher: name: Lancaster University
Year: 2021

description: This thesis describes the operation of two high-gradient accelerating structures in a high-power klystron based X-band test stand simultaneously and the phenomena observed in such an arrangement. The LLRF (Low Level Radio Frequency), interlock, and control systems of the test stand are modified to accommodate a dual structure arrangement and the designs are presented. Following this, numerical methods and CST Microwave Studio’s PIC solver are used to model the interactions which may manifest in a multi-structure high-gradient arrangement, namely the signal propagation during breakdown and the behaviour of field emitted current in high-gradient structures. Several implications for modern high-gradient facilities are then provided. In the upgraded test stand the high-gradient accelerating structures were conditioned simultaneously to gradients of approximately 90MV/m and 45MV/m respectively and the aforementioned simulations were validated experimentally. Finally, the development of a Monte Carlo model of high-gradient conditioning and operation is presented and compared with existing test stand data. The model is then used to investigate the effects of modifying the conditioning algorithm currently in use in CERN’s X-band test stands.
Finding $B_c(3S)$ States via Their Strong Decays
Creators: name: Ding, Rui
name: Wan, Bing-Dong
name: Chen, Zi-Qiang
name: Wang, Guo-Li
name: Qiao, Cong-Feng
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The experimentally known $B_c$ states are all below open bottom-charm threshold, which experience three main decay modes, and all induced by weak interaction. In this work, we investigate the mass spectrum and strong decays of the $B_c(3S)$ states, which just above the threshold, in the Bethe-Salpeter formalism and $^3P_0$ model. The numerical estimation gives $M(B_c(3^1S_0))=7273\ {\rm MeV}$, $M(B_c^*(3^3S_1))=7304\ {\rm MeV}$, $Γ\left(B_c(3^1S_0)\to B^*D\right)=26.02^{+2.33}_{-2.21}\ {\rm MeV}$, $Γ\left(B_c^*(3^3S_1)\to BD\right)=3.39^{+0.27}_{-0.26}\ {\rm MeV}$, $Γ\left(B_c^*(3^3S_1)\to B^*D\right)=14.77^{+1.40}_{-1.33}\ {\rm MeV}$ and $Γ\left(B_c^*(3^3S_1)\to BD^*\right)=6.14^{+0.58}_{-0.54}\ {\rm MeV}$. Compared with previous studies in non-relativistic approximation, our results indicate that the relativistic effects are notable in $B_c(3S)$ exclusive strong decays. According to the results, we suggest to find the $B_c(3S)$ states in their hadronic decays to $B$ and $D$ mesons in experiment, like the LHCb.
description: 10 pages, 1 figure, to appear in PLB
Einheit - Versöhnung - Solidarität: eine orthodoxe Reaktion auf die Probleme der Zeit
Creators: name: Kallis, Anastasios
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 41 Nr. 3 (1992): Ökumenische Rundschau, Band 41, Heft 3
Ion beam shaping and downsizing of nanostructures
Creators: name: Zgirski, M.
name: Riikonen, K. P.
name: Tuboltsev, V.
name: Jalkanen, P.
name: Hongisto, T. T.
name: Arutyunov, K. Yu
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report a new approach for progressive and well-controlled downsizing of nanostructures below the 10 nm scale. Low energetic ion beam (Ar+) is used for gentle surface erosion, progressively shrinking the dimensions with ~ 1 nm accuracy. The method enables shaping of nanostructure geometry and polishing the surface. The process is clean room / high vacuum compatible being suitable for various applications. Apart from technological advantages, the method enables study of various size phenomena on the same sample between sessions of ion beam treatment.
description: 14 pages, 6 figures
Piano Concerto
Creators: name: Howard, Christopher Eugene
Publisher: name: University of British Columbia
Year: 2009

description: The Piano Concerto represents an experiment in form in which a set of five continuous variations are partitioned into three movements, corresponding to the listener's expectations of a traditional tripartite concerto. Through the analysis of phrase structure, pitch and motivic variation, links amongst the variations are uncovered and developmental strategies discussed in an attempt to clarify the processes of musical creation. By proceeding in analysis from the highest levels of organization downwards, structural trends emerge which lend consistency to the work— low level patterns often reflect larger structural forces. In addition, a variety of symmetrical constructs are extant in the form of consistently used pitch collections (e.g., [0 1 4 9], a triad with both M3 and m3, subset of [0 1 4 5 8]), phrase organization (as in the second variation and the second movement) and the grouping of the variations themselves. Seeded initially as a recorded improvisation by the composer (which became the Aria), the Concerto displays formal tension as areas of rigid organization (Variations 1, 3, and 5) alternate with more freely organized regions (Variations 2 and 4), a dichotomy which springs from the Theme itself. The listener is taken on a linear journey through the telescoping development of material which maintains more or less explicit connections to the Theme throughout In general, the further into the work the listener progresses, the less literal the Thematic references become until a brief recapitulation appears at the end. The aesthetic which drives this work is based on a fundamental adherence to traditional procedures, tempered with unique approaches to form. This aesthetic and certain cohabiting non-traditional aspects of the Concerto will be discussed in the analysis that follows.
L'Amplificatore di Carica del Chip SER_09
Creators: name: E. Energico
name: P. Parascandolo
Publisher: name: INFN Open Access Repository
Year: 2008

description: Il numero dei canali di lettura negli esperimenti di fisica sia di alta energia che di bassa energia che impiegano rivelatori al silicio sta incrementando continuamente, e pertanto c'è un grande sviluppo  di dispositivi custom che integrano sullo stesso ASIC un numero grande di canali sia allo scopo di abbattere i costi sia allo scopo di compattare un elevato numero di canali su di una piccola superficie. Per l'esperimento EXPADES, il Servizio Elettronico e Rivelatori della Sezione INFN di Napoli, ha sviluppato il chip SER_09 in tecnologia CMOS da 0.35 micron della AMS (Austrian Microsystem).L'ASIC  legge 16 strip e, per ciascun canale nella sezione d'ingresso, è stato incorporato, oltre all'amplificatore di carica, anche una uscita veloce per il timing. L'uscita dell'amplificatore di  carica è connessa dapprima ad uno shaper ed è poi seguita da un banco di 16 peak and hold e da un multiplexer analogico a 16 canali.
A new comparison between solid-state thermionics and thermoelectrics
Creators: name: Humphrey, T. E.
name: O'Dwyer, M. F.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: It is shown that equations for electrical current in solid-state thermionic and thermoelectric devices converge for devices with a width equal to the mean free path of electrons, yielding a common expression for intensive electronic efficiency in the two types of devices. This result is used to demonstrate that the materials parameters for thermionic and thermoelectric devices are equal, rather than differing by a multiplicative factor as previously thought.
More on holographic correlators: Twisted and dimensionally reduced structures
Creators: name: Behan, Connor
name: Ferrero, Pietro
name: Zhou, Xinan
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Recently four-point holographic correlators with arbitrary external BPS operators were constructively derived in [1,2] at tree-level for maximally superconformal theories. In this paper, we capitalize on these theoretical data, and perform a detailed study of their analytic properties. We point out that these maximally supersymmetric holographic correlators exhibit a hidden dimensional reduction structure à la Parisi and Sourlas. This emergent structure allows the correlators to be compactly expressed in terms of only scalar exchange diagrams in a dimensionally reduced spacetime, where formally both the AdS and the sphere factors have four dimensions less. We also demonstrate the superconformal properties of holographic correlators under the chiral algebra and topological twistings. For $AdS_5\times S^5$ and $AdS_7\times S^4$, we obtain closed form expressions for the meromorphic twisted correlators from the maximally R-symmetry violating limit of the holographic correlators. The results are compared with independent field theory computations in 4d $\mathcal{N}=4$ SYM and the 6d $(2,0)$ theory, finding perfect agreement. For $AdS_4\times S^7$, we focus on an infinite family of near-extremal four-point correlators, and extract various protected OPE coefficients from supergravity. These OPE coefficients provide new holographic predictions to be matched by future supersymmetric localization calculations. In deriving these results, we also develop many technical tools which should have broader applicability beyond studying holographic correlators.
description: Minor changes, matches published version
Flussi Misurati di Protoni ed Elio e l'Origine del Ginocchio nello Spettro della Radiazione Cosmica
Creators: name: Codino, Antonio
Publisher: name: INFN Open Access Repository
Year: 2009

description: Si esaminano concisamente le osservazioni  dei ginocchi degli spettri in energia  di protoni ed elio nell'intervallo 10^{15}-10^{17} eV effettuati dagli esperimenti Eas-top e Kascade nonchè  la coerenza generale dei risultati ottenuti. Benchè sussistano differenze nei flussi dei singoli ioni e nella forma degli spettri osservati causate dalle varie procedure adottate nell'analisi dati,  alcune caratteristiche basilari degli spettri misurati permettono di discriminare  le teorie esistenti sull'origine e la natura del ginocchio e dei ginocchi dei singoli ioni nello spettro della radiazione cosmica primaria. Si prova che le proprietà misurate degli spettri dei protoni oltre 10^{16} eV sono in disaccordo con il meccanismo di accelerazione diffusivo con onde d'urto nei resti di supernova che prevede un crollo di efficienza accelerativa degli ioni cosmici con l'energia oltre 10$^{15}$ eV. Il disaccordo è quantificato in una differenza di 3 ordini di grandezza a 10$^{17}$ eV tra flussi osservati di protoni e flussi previsti.Le caratteristiche osservate degli spettri di protoni oltre 10^{15} eV costituiscono un risultato conclusivo per la spiegazione dell'origine e la natura del ginocchio dello spettro della radiazione cosmica  secondo la recente Teoria degli Indici Spettrali Costanti} dove i ginocchi e il ginocchio, essendo estranei a qualsivoglia meccanismo accelerativo,  sono effetti della propagazione dei raggi cosmici galattici,legati alle dimensioni finite del disco, alla forma e intensità del campo magnetico, alla posizione del sistema solare nella Via Lattea e alla quantità di gas nel mezzo interstellare.
Drift-Aware Multi-Memory Model for Imbalanced Data Streams
Creators: name: Abolfazli, Amir
name: Ntoutsi, Eirini
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Online class imbalance learning deals with data streams that are affected by both concept drift and class imbalance. Online learning tries to find a trade-off between exploiting previously learned information and incorporating new information into the model. This requires both the incremental update of the model and the ability to unlearn outdated information. The improper use of unlearning, however, can lead to the retroactive interference problem, a phenomenon that occurs when newly learned information interferes with the old information and impedes the recall of previously learned information. The problem becomes more severe when the classes are not equally represented, resulting in the removal of minority information from the model. In this work, we propose the Drift-Aware Multi-Memory Model (DAM3), which addresses the class imbalance problem in online learning for memory-based models. DAM3 mitigates class imbalance by incorporating an imbalance-sensitive drift detector, preserving a balanced representation of classes in the model, and resolving retroactive interference using a working memory that prevents the forgetting of old information. We show through experiments on real-world and synthetic datasets that the proposed method mitigates class imbalance and outperforms the state-of-the-art methods.
APECS - The Atacama Pathfinder Experiment Control System
Creators: name: Muders, D.
name: Hafok, H.
name: Wyrowski, F.
name: Polehampton, E.
name: Belloche, A.
name: Koenig, C.
name: Schaaf, R.
name: Schuller, F.
name: Hatchell, J.
name: Tak, F. v. d.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: APECS is the distributed control system of the new Atacama Pathfinder EXperiment (APEX) telescope located on the Llano de Chajnantor at an altitude of 5107 m in the Atacama desert in northern Chile. APECS is based on Atacama Large Millimeter Array (ALMA) software and employs a modern, object-oriented design using the Common Object Request Broker Architecture (CORBA) as the middleware. New generic device interfaces simplify adding instruments to the control system. The Python based observer command scripting language allows using many existing software libraries and facilitates creating more complex observing modes. A new self-descriptive raw data format (Multi-Beam FITS or MBFITS) has been defined to store the multi-beam, multi-frequency data. APECS provides an online pipeline for initial calibration, observer feedback and a quick-look display. APECS is being used for regular science observations in local and remote mode since August 2005.
description: 4 pages, A&A, accepted
Criteri di Progettazione degli Impianti Elettrici per l'Alimentazione dei Centri di Calcolo TIER2
Creators: name: Ricci, Ruggero
Publisher: name: INFN Open Access Repository
Year: 2009

description: Il presente elaborato riporta le linee guida per la progettazione degli impianti elettrici dei centri di calcolo di TIER2 dell'INFN. Vengono esaminati alcuni provvedimenti impiantistici per il miglioramento della continuità del servizio delle apparecchiature elettroniche di calcolo in relazione alle esigenze di funzionamento dei TIER2.
Investigation of Air/Water interface in Mixed Aqueous Solutions of KCl, NaCl, and DAH
Creators: name: GUNGOREN, Can
Publisher: name: Faculty of Geoengineering, Mining and Geology, Wrocław University of Technology, Wrocław
Year: 2019
Subjects: surface tension, Bubble coalescence, NaCl, KCl, DAH

description: Physicochemical Problems of Mineral Processing; ISSN 2084-4735
Quality-Driven Dynamic VVC Frame Partitioning for Efficient Parallel Processing
Creators: name: Amestoy, Thomas
name: Hamidouche, Wassim
name: Bergeron, Cyril
name: Menard, Daniel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: VVC is the next generation video coding standard, offering coding capability beyond HEVC standard. The high computational complexity of the latest video coding standards requires high-level parallelism techniques, in order to achieve real-time and low latency encoding and decoding. HEVC and VVC include tile grid partitioning that allows to process simultaneously rectangular regions of a frame with independent threads. The tile grid may be further partitioned into a horizontal sub-grid of Rectangular Slices (RSs), increasing the partitioning flexibility. The dynamic Tile and Rectangular Slice (TRS) partitioning solution proposed in this paper benefits from this flexibility. The TRS partitioning is carried-out at the frame level, taking into account both spatial texture of the content and encoding times of previously encoded frames. The proposed solution searches the best partitioning configuration that minimizes the trade-off between multi-thread encoding time and encoding quality loss. Experiments prove that the proposed solution, compared to uniform TRS partitioning, significantly decreases multi-thread encoding time, with slightly better encoding quality.
Riflessioni sulla Virtualizzazione
Creators: name: Ciampa, Alberto
Publisher: name: INFN Open Access Repository
Year: 2009

description: Proposta di un semplice contesto metodologico per la valutazione degli ambiti applicativi nei quali introdurre la virtualizzazione. Vengono presentati e brevemente analizzati quattro scenari: worker nodes on demand, virtualizzazione per high availability, farm on demand e virtualizzazione per interattivo. Si conclude con la presentazione della proposta per il coinvolgimento della Sezione di Pisa nel Gruppo di Virtualizzazione.
The environmental dependence of the X_CO conversion factor
Creators: name: Gong, Munan
name: Ostriker, Eve C.
name: Kim, Chang-Goo
name: Kim, Jeong-Gyu
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: CO is the most widely used observational tracer of molecular gas. The observable CO luminosity is translated to H_2 mass via a conversion factor, X_CO, which is a source of uncertainty and bias. Despite variations in X_CO, the empirically-determined solar neighborhood value is often applied across different galactic environments. To improve understanding of X_CO, we employ 3D magnetohydrodynamics simulations of the interstellar medium (ISM) in galactic disks with a large range of gas surface densities, allowing for varying metallicity, far-ultraviolet (FUV) radiation, and cosmic ray ionization rate (CRIR). With the TIGRESS simulation framework we model the three-phase ISM with self-consistent star formation and feedback, and post-process outputs with chemistry and radiation transfer to generate synthetic CO(1--0) and (2--1) maps. Our models reproduce the observed CO excitation temperatures, line-widths, and line ratios in nearby disk galaxies. X_CO decreases with increasing metallicity, with a power-law slope of -0.8 for the (1--0) line and -0.5 for the (2--1) line. X_CO also decreases at higher CRIR, and is insensitive to the FUV radiation. As density increases, X_CO first decreases due to increasing excitation temperature, and then increases when the emission is fully saturated. We provide fits between X_CO and observable quantities such as the line ratio, peak antenna temperature, and line brightness, which probe local gas conditions. These fits, which allow for varying beam size, may be used in observations to calibrate out systematic biases. We also provide estimates of the CO-dark H_2 fraction at different gas surface densities, observational sensitivities, and beam sizes.
description: Accepted by ApJ
Snowshoe hare demography and behaviour during a cyclic population low phase
Creators: name: Hodges, Karen Elizabeth
Publisher: name: University of British Columbia
Year: 2009

description: Snowshoe hares, Lepus americanus, undergo a ten-year population cycle. I examined whether hares respond behaviourally to predators, and whether hare behaviour influenced population dynamics. If behaviour reduces hares' condition and fecundity, that could explain why the low phase lasts two to four years. I used a factorial manipulation of food addition and predator reduction in southwestern Yukon to test their effects on hare behaviour and demography. Two areas had food added, one area was fenced to exclude mammalian predators, and one area combined both manipulations. Hares densities were low from 1993 to 1995, and increased after summer 1995. Adult survival was similar throughout. Most deaths were due to predation, despite low densities of predators. Although all treatments had higher hare densities, the manipulations started in the previous increase phase, and densities are probably due to earlier dynamics. Populations increased simultaneously on all sites. Hares on control sites ate more protein and less fibre than did hares elsewhere. These differences resulted from the species and twig sizes they ate. Hares on food addition sites had better overall diets, indicated by lower faecal fibre. On all treatments, hares preferred habitats with little open ground and dense clusters of willow. Hares used the thickest cover when resting, and used more exposed sites while foraging. In summer, they preferred deadfall for immediate cover, but in winter they preferred spruce. Male hares, but not females, had larger home ranges when predators were present. Summer movement rates were also higher on sites with predators. Hares did not respond behaviourally to manipulations of food or predators. Food availability was high and predation risk low: hares may employ many different behavioural strategies with similar demographic impacts. There is no support for a behaviourally-mediated explanation for the demography or duration of the low phase. Adult survival and fecundity did not change, which implies that changes in juvenile survival are crucial to population dynamics. Although behaviour does not appear to affect demography during the low phase, it may do so during the increase and especially the decline phases, when food is more limiting and predation more severe.
Formation of Resonant Atomic Lines during Thermonuclear Flashes on Neutron Stars
Creators: name: Chang, P.
name: Bildsten, L.
name: Wasserman, I.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Motivated by the measurement of redshifted Fe H$α$ lines during type I X-ray bursts on EXO 0748-676 (Cottam, Paerels & Mendez), we study the formation of atomic Fe lines above the photosphere of a bursting neutron star ($k_BT_{\rm eff} \approx 1-2 {\rm keV}$). We discuss the effects of Stark broadening, resonant scattering and NLTE (level population) on the formation of hydrogenic Fe H$α$, Ly$α$ and P$α$ lines. From the observed equivalent width of the Fe H$α$ line, we find an implied Fe column of $1-3 \times 10^{20} {\rm cm}^{-2}$, which is 3-10 times larger than the Fe column calculated from the accretion/spallation model of Bildsten, Chang & Paerels. We also estimate that the implied Fe column is about a factor of 2-3 larger than a uniform solar metallicity atmosphere. We discuss the effects of rotational broadening and find that the rotation rate of \EXO must be slow, as confirmed by the recent measurement of a 45 Hz burst oscillation by Villarreal & Strohmayer. We also show that the Fe Ly$α$ EW $\approx$ 15-20 eV (redshifted 11-15 eV) and the P$α$ EW $\approx$ 4-7 eV (redshifted 3-5 eV) when the H$α$ EW is 10 eV (redshifted 8 eV). The Ly$α$ line is rotationally broadened to a depth of $\approx 10%$, making it difficult to observe with {\it Chandra}. We also show that radiative levitation can likely support the Fe column needed to explain the line.
description: 10 pages, 8 figures, to be published in ApJ
PROCESSOS FORMATIVOS EM EDUCAÇÃO E SAÚDE NAS PRÁTICAS DE CUIDADO DECOLONIAIS
Creators: name: Larayne, G. F. Oliveira
Publisher: name: Zenodo
Year: 2024

description: ResumoObjetivo: Apresentar discussões frente aos processos formativos em educação e saúde nas práticas de cuidado decoloniais. Método: A metodologia adotada para conduzir este ensaio foi baseada em pesquisas bibliográficas que se apoiam na literatura existente sobre o assunto, bem como nos diálogos do Mestrado Profissional em Ensino e Relações Étnico-raciais. Resultados: Os profissionais de saúde e educação devem ser treinados para compreender e respeitar as crenças e práticas culturais. Devem buscar ativamente a equidade na prestação de serviços de saúde, reconhecendo os determinantes sociais da saúde e adotar a inclusão de saberes tradicionais frente ao cuidado. Considerações Finais: Para atingir esse fim, é imperativo identificar e superar as incongruências presentes nos processos formativos, fomentar práticas que resistam ao colonialismo, reconhecendo a importância das formas de conhecimento não convencionais, e abraçar uma ética que se oponha ao racismo.Palavras-chave: Educação em Saúde; Populações Minoritárias; Vulneráveis e Desiguais em Saúde; Atenção Primária à Saúde.
Information theory of open fragmenting systems
Creators: name: Gulminelli, F.
name: Chomaz, Ph.
name: Juillet, O.
name: Ison, M. J.
name: Dorso, C. O.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: An information theory description of finite systems explicitly evolving in time is presented. We impose a MaxEnt variational principle on the Shannon entropy at a given time while the constraints are set at a former time. The resulting density matrix contains explicit time odd components in the form of collective flows. As a specific application we consider the dynamics of the expansion in connection with heavy ion experiments. Lattice gas and classical molecular dynamics simulations are shown.
description: 5 pages, 2 figures, Proceedings for VI Latin American Symposium on Nuclear Physics and Applications, Iguazu, Argentina (2005). To be published in Acta Phys. Hung. A
PHYTOCHEMICAL COMPOSITION OF PINUS NIGRA ARN. UNRIPE SEEDS FROM BULGARIA
Creators: name: Fidan, Hafize
name: Stankov, Stanko
name: Stoyanova, Magdalena
name: Petkova, Zhana
name: Petkova, Nadezhda
name: Stoyanova, Albena
Publisher: name: Zenodo
Year: 2021

description: Black pine (Pinus nigra Arn.) is found in Central and Southern Europe, Southwest Asia, the Balkan Peninsula, including Bulgaria's territory. The present paper aimed to investigate the phytochemical composition of unripe black pine seeds obtained from Bulgaria. Lipid fraction, was evaluated in unripe seeds, and cellulose, total carbohydrates, glucose, fructose, and sucrose were evaluated in seedcakes. The major fatty acid identified in the P. nigra seed oil was the unsaturated linoleic acid (44.2%), followed by the saturated palmitic acid (31.2%). The amount of unsaturated pinolenic (10.5%) and oleic acids (8.8%) was also rather high. The amino acid composition of the protein fraction of seedcakes was also determined. The amino acid composition was represented mainly by arginine (8.74 mg/g), phenylalanine (7.84 mg/g), lysine (7.50%), tryptophan (6.42 mg/g), valine (6.13 mg/g), isoleucine (6.00 mg/g), leucine (1.18 mg/g), and methionine (1.13 mg/g). The mineral content (N, P, K, Mg, Na, and Cu) of seedcakes was evaluated, as the amount of K (8048.00 mg/kg) and Mg (172.99 mg/kg) were the highest in the samples. These findings emphasized the potential use of the unripe black pine seeds as an alternative source of bioactive components in different areas due to their phytochemical importance and values.