cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Submillimeter imaging of the Galactic Center starburst Sgr B2. Warm molecular, atomic, and ionized gas far from massive star-forming cores
Creators: name: Santa-Maria, M. G.
name: Goicoechea, J. R.
name: Etxaluze, M.
name: Cernicharo, J.
name: Cuadrado, S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present 168 arcmin^2 spectral images of the Sgr B2 complex taken with Herschel/SPIRE-FTS. We detect ubiquitous emission from CO (up to J=12-11), H2O, [CI]492, 809 GHz, and [NII] 205 um lines. We also present maps of the SiO, N2H+, HCN, and HCO+ emission obtained with the IRAM30m telescope. The cloud environment dominates the emitted FIR (80%), H2O 752 GHz (60 %) mid-J CO (91%), and [CI] (93 %) luminosity. The region shows very extended [NII] emission (spatially correlated with the 24 and 70 um dust emission). The observed FIR luminosities imply G_0~10^3. The extended [CI] emission arises from a pervasive component of neutral gas with n_H~10^3 cm-3. The high ionization rates, produced by enhanced cosmic-ray (CR) fluxes, drive the gas heating to Tk~40-60 K. The mid-J CO emission arises from a similarly extended but more pressurized gas component (P_th~10^7 K cm-3). Specific regions of enhanced SiO emission and high CO-to-FIR intensity ratios (>10^-3) show mid-J CO emission compatible with shock models. A major difference compared to more quiescent star-forming clouds in the disk of our Galaxy is the extended nature of the SiO and N2H+ emission in Sgr B2. This can be explained by the presence of cloud-scale shocks, induced by cloud-cloud collisions and stellar feedback, and the much higher CR ionization rate (>10^-15 s-1) leading to overabundant H3+ and N2H+. Hence, Sgr B2 hosts a more extreme environment than star-forming regions in the disk of the Galaxy. As a usual template for extragalactic comparisons, Sgr B2 shows more similarities to ultra luminous infrared galaxies such as Arp 220, including a "deficit" in the [CI]/FIR and [NII]/FIR intensity ratios, than to pure starburst galaxies such as M82. However, it is the extended cloud environment, rather than the cores, that serves as a useful template when telescopes do not resolve such extended regions in galaxies.
description: Accepted for publication in A&A, 28 pages, 21 figures (abridged abstract)
Singular perturbation of quantum stochastic differential equations with coupling through an oscillator mode
Creators: name: Gough, John
name: van Handel, Ramon
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider a physical system which is coupled indirectly to a Markovian resevoir through an oscillator mode. This is the case, for example, in the usual model of an atomic sample in a leaky optical cavity which is ubiquitous in quantum optics. In the strong coupling limit the oscillator can be eliminated entirely from the model, leaving an effective direct coupling between the system and the resevoir. Here we provide a mathematically rigorous treatment of this limit as a weak limit of the time evolution and observables on a suitably chosen exponential domain in Fock space. The resulting effective model may contain emission and absorption as well as scattering interactions.
Investigations towards the synthesis of vinblastine and vinblastine analogs
Creators: name: Pedersen, Ove
Publisher: name: University of British Columbia
Year: 2009

description: This dissertation describes research towards a feasible synthesis of vinbiastine 1, by coupling of a suitable catharanthine analog with vindoline 4. In this connection a reinvestigation of the modified Polonovski reaction was undertaken in order to gain a better understanding of the factors affecting the yield of the reaction. The Diels-Alder reaction of the methyl α-chloroacrylate 31 with the dihydropyridine 30 afforded the isomeric Diels Alder adducts 32 and 33. The two adducts were separated and transformed into the indole-amides 40 and 51 as well as the corresponding thioamides. Photochemical cyclization of the amides and the thioamides gave lactam 55 and thiolactam 61. However, with a best overall yield of 7% of lactam 55 the investigated strategy did not lead to a practical synthesis of vinbiastine. The low yields obtained in the coupling of catharanthine derivatives with vindoline 4 necessitated a reinvestigation of the modified Polonovski reaction. In using fractional factorial design as experimental strategy and exocatharanthine 89 as a suitable catharanthine analog, a new intermediate was discovered and the yield of dimeric alkaloid was improved from 35% to 70%. The better understanding obtained of the factors influencing the yield of the modified Polonovski reaction
Efficient Exploration of Interesting Aggregates in RDF Graphs
Creators: name: Diao, Yanlei
name: Guzewicz, Paweł
name: Manolescu, Ioana
name: Mazuran, Mirjana
Publisher: name: arXiv
Year: 2021
Subjects: subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: As large Open Data are increasingly shared as RDF graphs today, there is a growing demand to help users discover the most interesting facets of a graph, which are often hard to grasp without automatic tools. We consider the problem of automatically identifying the k most interesting aggregate queries that can be evaluated on an RDF graph, given an integer k and a user-specified interestingness function. Our problem departs from analytics in relational data warehouses in that (i) in an RDF graph we are not given but we must identify the facts, dimensions, and measures of candidate aggregates; (ii) the classical approach to efficiently evaluating multiple aggregates breaks in the face of multi-valued dimensions in RDF data. In this work, we propose an extensible end-to-end framework that enables the identification and evaluation of interesting aggregates based on a new RDF-compatible one-pass algorithm for efficiently evaluating a lattice of aggregates and a novel early-stop technique (with probabilistic guarantees) that can prune uninteresting aggregates. Experiments using both real and synthetic graphs demonstrate the ability of our framework to find interesting aggregates in a large search space, the efficiency of our algorithms (with up to 2.9x speedup over a similar pipeline based on existing algorithms), and scalability as the data size and complexity grow.
description: Accepted for publication in proceedings of the 2021 International Conference on Management of Data (SIGMOD '21), June 20--25, 2021, Virtual Event, China
Selection of acupuncture points (acupoints) for low back pain: systematic review and network analysis
Creators: name: Lee, In-Seon
Publisher: name: OSF Registries
Year: 2022
Subjects: subject: Alternative and Complementary Medicine
subject: Diseases
subject: Public Health
subject: Medicine and Health Sciences

description: This is a registration of a systematic review on the acupoints used to treat low back pain in clinical trials, which also includes a network analysis to reveal relationships between major and minor acupoints, and between acupoints and clinical effects of acupuncture treatment.
[Phrase, lexical, and sentence elicitation]
Creators: name: Cuevas Cortés, Margarita
name: Jiménez García, Otelia
name: Macaulay, Monica
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2020
Subjects: Chalcatongo de Hidalgo Mixtec language

description: Work with Margarita Cuevas begins midway through 003 (Tape 17, Side A). See pages 4-13 of associated field notes.
Additional file 1 of Effect of mobile learning on academic achievement and attitude of Sudanese dental students: a preliminary study
Creators: name: Mergany, Nissreen Nugud
name: Alam-Elhuda Dafalla
name: Elhadi Awooda
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Additional file 1. Mobile application used in the study.
Irradiation-induced Ag nanocluster nucleation in silicate glasses: analogy with photography
Creators: name: de Lamaestre, R. Espiau
name: Béa, H.
name: Bernas, H.
name: Belloni, J.
name: Marignier, J. L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The synthesis of Ag nanoclusters in sodalime silicate glasses and silica was studied by optical absorption (OA) and electron spin resonance (ESR) experiments under both low (gamma-ray) and high (MeV ion) deposited energy density irradiation conditions. Both types of irradiation create electrons and holes whose density and thermal evolution - notably via their interaction with defects - are shown to determine the clustering and growth rates of Ag nanocrystals. We thus establish the influence of redox interactions of defects and silver (poly)ions. The mechanisms are similar to the latent image formation in photography: irradiation-induced photoelectrons are trapped within the glass matrix, notably on dissolved noble metal ions and defects, which are thus neutralized (reverse oxidation reactions are also shown to exist). Annealing promotes metal atom diffusion, which in turn leads to cluster nuclei formation. The cluster density depends not only on the irradiation fluence, but also - and primarily - on the density of deposited energy and the redox properties of the glass. Ion irradiation (i.e., large deposited energy density) is far more effective in cluster formation, despite its lower neutralization efficiency (from Ag+ to Ag0) as compared to gamma photon irradiation.
description: 48 pages, 18 figures, revised version publ. in Phys. Rev. B, pdf file
A Joint Inversion-Segmentation approach to Assisted Seismic Interpretation
Creators: name: Ravasi, Matteo
name: Birnie, Claire Emma
Publisher: name: arXiv
Year: 2021
Subjects: subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: Structural seismic interpretation and quantitative characterization are historically intertwined processes. The latter provides estimates of properties of the subsurface which can be used to aid structural interpretation alongside the original seismic data and a number of other seismic attributes. In this work, we redefine this process as a inverse problem which tries to jointly estimate subsurface properties (i.e., acoustic impedance) and a piece-wise segmented representation of the subsurface based on user-defined macro-classes. By inverting for the quantities simultaneously, the inversion is primed with prior knowledge about the regions of interest, whilst at the same time it constrains this belief with the actual seismic measurements. As the proposed functional is separable in the two quantities, these are optimized in an alternating fashion, where each subproblem is solved using a Primal-Dual algorithm. Subsequently, each class is used as input to a workflow which aims to extract the perimeter of the detected shapes and to produce unique horizons. The effectiveness of the proposed method is illustrated through numerical examples on synthetic and field datasets.
Structured light engineering using a photonic nanojet
Creators: name: Yousefi, Maryam
name: Necesal, Daniel
name: Scharf, Toralf
name: Rossi, Markus
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: In this letter, we present the photonic nanojet as a phenomenon in a structured light generator system that is implemented to modify the source focal spot size and emission angle. The optical system comprises a microlens array that is illuminated by a focused Gaussian beam to generate a structured pattern in the far-field. By introducing a spheroid with different aspect ratios in the focus of the Gaussian beam, the source optical characteristics change and a photonic nanojet is generated which will engineer the far-field distribution. To probe the light fields we implement a high-resolution interferometry setup to extract both the phase and intensity at different planes. We both numerically and experimentally demonstrate that the pattern distribution in the far-field can be engineered by photonic nanojet. As an example, we examine prolate, sphere, and ablate geometries. An interesting finding is that depending on the spheroid geometry, a smaller transverse FWHM of a photonic nanojet with a higher diverges angle produces an increased pattern field of view at the same physical size of the optical system.
La qualità dell’accesso agli archivi tramite le risorse di rete come questione cruciale per la professione contemporanea.
Creators: name: Feliciati, Pierluigi
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2015
Subjects: M-STO/08 Archivistica, bibliografia e biblioteconomia

description: Se la descrizione archivistica è mediazione tra gli archivi e gli utenti finali, gli standard internazionali e nazionali sono focalizzati sulla predisposizione di strumenti di input, rispettando perlopiù le informazioni originali tratte dal contesto di produzione e richiedendo spesso una mediazione estesa fino alla decodifica per gli utenti degli stessi strumenti di accesso (extended mediation). In ambiente digitale, questo paradigma – unito ad altre problematiche tra cui la scarsa utilizzabilità degli archivi on-line per i web agents non specializzati e l'urgenza della comunicazione degli archivi in formazione - dimostra tutta la sua inadeguatezza. È necessario dunque definire, collaborando con altri professionisti tra cui prima di tutto i digital librarians, un modello aggiornato che supporti la progettazione di archivi in rete davvero efficaci per gli utenti, chiamandoli a partecipare al processo di mediazione (shared authority model).
Modeling Realistic Adversarial Attacks against Network Intrusion Detection Systems
Creators: name: Apruzzese, Giovanni
name: Andreolini, Mauro
name: Ferretti, Luca
name: Marchetti, Mirco
name: Colajanni, Michele
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: The incremental diffusion of machine learning algorithms in supporting cybersecurity is creating novel defensive opportunities but also new types of risks. Multiple researches have shown that machine learning methods are vulnerable to adversarial attacks that create tiny perturbations aimed at decreasing the effectiveness of detecting threats. We observe that existing literature assumes threat models that are inappropriate for realistic cybersecurity scenarios because they consider opponents with complete knowledge about the cyber detector or that can freely interact with the target systems. By focusing on Network Intrusion Detection Systems based on machine learning, we identify and model the real capabilities and circumstances required by attackers to carry out feasible and successful adversarial attacks. We then apply our model to several adversarial attacks proposed in literature and highlight the limits and merits that can result in actual adversarial attacks. The contributions of this paper can help hardening defensive systems by letting cyber defenders address the most critical and real issues, and can benefit researchers by allowing them to devise novel forms of adversarial attacks based on realistic threat models.
Trattamento della malattia paranale complessa di Crohn: rescue therapy dopo fallimento dei farmaci biologici
Treatment of complex perianal Crohn's disease: rescue therapy after failure of biological drugs
Creators: name: Gentilini, Lorenzo <1979>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2015
Subjects: MED/18 Chirurgia generale

description: La malattia paranale di Crohn rappresenta una condizione clinica complessa e invalidante. La chirurgia da sola è efficace nel migliorare i sintomi mediante il controllo della sepsi, ma è raramente associata alla guarigione definitiva. L'introduzione dei farmaci biologici ha aumentato le possibilità di chiusura definitiva delle fistole. Tuttavia molti pazienti non rispondono a questo trattamento bio-chirurgico combinato. Il ruolo del mucosal healing del retto ottenuto con i farmaci non è al momento ancora chiaro. L'obiettivo del presente studio è quello di identificare possibili terapia alternative per pazienti non responsivi ai biologici. Lo studio ha valutato efficacia e sicurezza della chirurgia riparativa, confezionamento di flap mucosi endorettali e posizionamento di protesi biologiche, nei pazienti non responsivi ai biologici ma che grazie ad essi abbiano ottenuto un mucosal healing del retto.
description: Perianal Crohn's disease is a complex and disabling clinical condition. 
surgical treatment alone is effective in relieving symptoms with sepsis control but it is associated with a low healing rates. The introduction of biological drugs increased the rate of healing of perianal fistulas. However many patients are still not responders to bio-surgical approach. The role of rectal mucosal healing obtained with biologics in these patients is still non well defined yet. The aim of the present study was to investigate possible rescue treatments for these patients. The study analyzed the efficacy and safety of surgical primary repair,such as endorectal advancement flap and biological plug placement,in patients  not responders to biologics but who obtained a rectal mucosal healing.
A Game Theoretic Framework for Decentralized Power Allocation in IDMA Systems
Creators: name: Perlaza, Samir Medina
name: Cottatellucci, Laura
name: Debbah, Merouane
Publisher: name: arXiv
Year: 2008
Subjects: subject: Information Theory (cs.IT)
subject: Computer Science and Game Theory (cs.GT)
subject: FOS: Computer and information sciences

description: In this contribution we present a decentralized power allocation algorithm for the uplink interleave division multiple access (IDMA) channel. Within the proposed optimal strategy for power allocation, each user aims at selfishly maximizing its own utility function. An iterative chip by chip (CBC) decoder at the receiver and a rational selfish behavior of all the users according to a classical game-theoretical framework are the underlying assumptions of this work. This approach leads to a power allocation based on a channel inversion policy where the optimal power level is set locally at each terminal based on the knowledge of its own channel realization, the noise level at the receiver and the number of active users in the network.
description: To appear in IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC 2008)
Studio della superficie degli impianti dentali in titanio: La nanotecnologia nella valutazione delle nuove superfici implantari in rapporto all'osteointegrazione dei mascellari
Study of dental implant titanium surface: Nanotechnology in new surfaces evaluation relating to jaws osseointegration.
Creators: name: Ricci, Emanuele <1981>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2015
Subjects: MED/29 Chirurgia maxillofacciale

description: Il presente lavoro parte dalla descrizione dei processi di rimodellamento osseo mascellare a seguito della perdita di elementi dentari e la successiva riabilitazione mediante impianto dentale osteointegrato. Approfondiremo proprio i complessi aspetti dell’osteointegrazione su superfici implantari in titanio sia a livello micro che macroscopico.
Nel campo dell’implantologia, infatti, il titanio risulta essere il materiale maggiormente impiegato in virtù della sua eccellente biocompatibilità e resistenza.
Successivamente prenderemo in analisi i trattamenti di superficie implantare ad oggi più diffusi, lavorati prevalentemente a livello microscopico e infine confronteremo una sistematica trattata tradizionalmente con una innovativa  trattata superficialmente a livello nanometrico. Il confronto avverrà in vivo, paragonando i risultati ottenuti clinicamente e radiograficamente tra le 2 sistematiche implantari, utilizzate per ripristinare la funzione masticatoria nei pazienti arruolati.
description: This paper starts from the description of the processes of the maxillary bone remodeling due to the loss of teeth and the subsequent rehabilitation by osseointegrated dental implants. We are deepening the complex features of osseointegration of titanium implant surfaces at both micro and macroscopic aspects.
In fact in implantology the titanium appears to be the material most widely used because of its excellent biocompatibility and resistance.
Subsequently we will analyze the implant surface treatments for today's most popular, worked mostly at the microscopic level and then will compare a treated traditionally system with an innovative surface treated at the nanometer level. The comparison will take place in vivo, by comparing the results obtained clinically and radiographically between the two implant systems, used to restore the masticatory function in patients enrolled.
Additional file 2 of Effect of mobile learning on academic achievement and attitude of Sudanese dental students: a preliminary study
Creators: name: Mergany, Nissreen Nugud
name: Alam-Elhuda Dafalla
name: Elhadi Awooda
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Additional file 2. Academic test.
Is Disgust a Signal Detection Problem? A Behavioral Test of the Smoke Detector Principle for the Behavioral Immune System
Creators: name: Lisa-Marie Segbert
name: Mokros, Andreas
Publisher: name: OSF Registries
Year: 2022
Subjects: subject: Personality and Social Contexts
subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology

description: The goal of this study is to examine a possible shift of the threshold to categorize faces as contagious based on personality and individual factors.
Specifically, this will be tested in a categorization task that uses face that have been manipulated to show actual cues of infection (i.e., red eyes, pale lips and face; Axelsson et al., 2018). Additionally, the influence of disgust sensitivity and propensity on the criterion c will be investigated.
Towards a mathematical framework to inform Neural Network modelling via Polynomial Regression
Creators: name: Morala, Pablo
name: Cifuentes, Jenny Alexandra
name: Lillo, Rosa E.
name: Ucar, Iñaki
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Even when neural networks are widely used in a large number of applications, they are still considered as black boxes and present some difficulties for dimensioning or evaluating their prediction error. This has led to an increasing interest in the overlapping area between neural networks and more traditional statistical methods, which can help overcome those problems. In this article, a mathematical framework relating neural networks and polynomial regression is explored by building an explicit expression for the coefficients of a polynomial regression from the weights of a given neural network, using a Taylor expansion approach. This is achieved for single hidden layer neural networks in regression problems. The validity of the proposed method depends on different factors like the distribution of the synaptic potentials or the chosen activation function. The performance of this method is empirically tested via simulation of synthetic data generated from polynomials to train neural networks with different structures and hyperparameters, showing that almost identical predictions can be obtained when certain conditions are met. Lastly, when learning from polynomial generated data, the proposed method produces polynomials that approximate correctly the data locally.
description: 39 pages, 15 figures
Limits on iron-dominated fallback disk in SN 1987A
Creators: name: Werner, K.
name: Nagel, T.
name: Rauch, T.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The non-detection of a point source in SN1987A imposes an upper limit for the optical luminosity of L=2L_sun. This limits the size of a possible fallback disk around the stellar remnant. Assuming a steady-state thin disk with blackbody emission requires a disk smaller than 100,000 km if the accretion rate is at 30% of the Eddington rate (Graves et al. 2005). We have performed detailed non-LTE radiation transfer calculations to model the disk spectrum more realistically. It turns out that the observational limit on the disk extension becomes even tighter, namely 70,000 km.
description: To appear in: Proceedings "Supernova 1987A: Twenty years after"
Solid state phase transformation kinetics in Zr-base alloys
Creators: name: Massih, A. R.
name: Jernkvist, L. O.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present a kinetic model for solid state phase transformation (alphabeta) of common zirconium alloys used as fuel cladding material in light water reactors. The model computes the relative amounts of beta or alpha phase fraction as a function of time or temperature in the alloys. The model accounts for the influence of excess oxygen (due to oxidation) and hydrogen concentration (due to hydrogen pickup) on phase transformation kinetics. Two variants of the model denoted by A and B are presented. Model A is suitable for simulation of laboratory experiments in which the heating/cooling rate is constant and is prescribed. Model B is more generic. We compare the results of our model computations, for both A and B variants, with accessible experimental data reported in the literature covering heating/cooling rates of up to 100 K/s. The results of our comparison are satisfactory, especially for model A. Our model B is intended for implementation in fuel rod behavior computer programs, applicable to a reactor accident situation, in which the Zr-based fuel cladding may go through alphabeta phase transformation.
description: 19 pages, 15 figures
Serum anti-interferon alpha antibodies in chronic hepatitis C patients treated with pegylated interferon alpha containing therapy
Creators: name: Vukotic, Ranka <1981>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2015
Subjects: MED/09 Medicina interna

description: The development of anti-IFNα antibodies is an occurrence described in chronic hepatitis C patients during treatment with Interferonα/PEG-Interferonα. However, its relevance, especially in difficult-to treat patients, has not been defined. Methods: We retrospectively measured the serum levels of anti-IFNα antibodies (baseline and week 12) and IFNα levels (week 12) by ELISA in 76 previous non-responders, and in 14 naive patients treated with Pegylated-IFNα and Ribavirin. A group of 57 healthy donors (HD) was also assessed as control. Positivity to anti-IFNα antibodies was established on the values of HD. Results: Baseline anti-IFNα antibodies were detected in 15.5% of patients and in 7% of HD, with significantly higher concentrations in patients than HD (181.5±389.9 vs 95.9±143.0 ng mL−1, p=0.0023). All positive patients were IFNα-experienced. At week 12, the prevalence of positivity increased to 22.3 and 28.5% in experienced and naïve patients, respectively, and the levels of anti-IFNα antibodies did not differ between the two groups (391±792.3 vs 384.7±662.6 ng mL−1, respectively). IFNα concentrations were significantly lower in antibody-positive patients than in antibody-negatives (988.2±1402 vs 3462±830.8 pg mL−1, p≤0.0001) and the levels of antibodies and IFNα were inversely correlated (r=-0.405, p=0.0001). The antibody-positive population clustered in null responders (67%) and 19/21 patients (90%) did not achieve SVR. Conclusions: The development of anti-IFNα antibodies is a non-negligible occurrence in patients treated with PEG-IFNα, is stable over time, and has a relevant clinical impact when associated with low levels of circulating PEG-IFNα. It should be considered in patients undergoing treatments including PEG-IFNα.
Area Optimisation of Two Stage Miller Compensated Op-Amp in 65 nm Using Hybrid PSO
Creators: name: Rashid, Ria
name: Nambath, Nandakumar
Publisher: name: arXiv
Year: 2021
Subjects: subject: Emerging Technologies (cs.ET)
subject: Systems and Control (eess.SY)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Analog circuit design can be formulated as a non-linear constrained optimisation problem that can be solved using any suitable optimisation algorithms. Different optimisation techniques have been reported to reduce the design time of analog circuits. A hybrid particle swarm optimisation algorithm with linearly decreasing inertia weight for the optimisation of analog circuit design is proposed in this study. The proposed method is used to design a two-stage operational amplifier circuit with Miller compensation. The results show that the proposed optimisation method can substantially reduce the design time needed for analog circuits.
Phase structure of the large-N reduced gauge theory and generalized Weingarten model
Creators: name: Hanada, Masanori
name: Kanai, Takashi
name: Kawai, Hikaru
name: Kubo, Fukuichiro
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We study a generalization of Weingarten model reduced to a point, which becomes the large-N reduced U(N) gauge theory in a special limit. We find that the U(1)^d symmetry is broken one by one, and restored simultaneously as U(1)^d -> U(1)^{d-1} -> ... -> U(1) -> 1 -> U(1)^d as we change the coupling constants. In this model we can develop an efficient algorithm and we can see the phase structure of large-N reduced model clearly, and therefore this model would be useful for the study of the unitary model.
description: LaTeX-2e, 11 pages with 11 figures; typos corrected
Θεσσαλική νεολιθική κεραμική: τεχνολογία και κατανομή στο χώρο
Creators: name: Ροντήρη, Βάσω Α.
Publisher: name: Aristotle University of Thessaloniki
Year: 2009
Subjects: Ενεργός δράση
Νεολιθική κεραμική
Κατανομή στο χώρο
Νεολιθικοί οικισμοί
Κατηγορίες κεραμικής
Ομάδες κεραμικής ύλης
Agency
Neolithic pottery
Spatial distribution
Neolithic sites
Fabric groups

description: Αντικείμενο της διατριβής είναι η νεολιθική κεραμική της Θεσσαλίας στο Αρχαιολογικό Μουσείο του Βόλου, η οποία προέρχεται από ανασκαφές και περισυλλογές. Στόχος της είναι η αναζήτηση του κοινωνικού ρόλου της κεραμικής μέσα από την ανάλυση των κατηγοριών της και η κατανομή τους στο θεσσαλικό χώρο. Βασίζεται στη μακροσκοπική εξέταση των οστράκων και την καταγραφή των χαρακτηριστικών τους σε βάση δεδομένων, στη δημιουργία ομάδων κεραμικής ύλης ανά κατηγορία και στην εξέταση της κατανομής τους και την εξαγωγή συμπερασμάτων. Η διατριβή περιλαμβάνει την εισαγωγή (Κεφ. 1) με θεωρητικά ζητήματα γύρω από τον κοινωνικό ρόλο της κεραμικής. Ακολουθούν: Μέρος α΄(Κεφ. 2,3,4): Το φυσικό περιβάλλον της Θεσσαλίας και το ιστορικό των τοπογραφικών ερευνών και της πορείας της έρευνας για τη νεολιθική κεραμική. Μέρος β΄(Κεφ. 5,6): Περιγραφή και δειγματοληψία του υλικού, τυπολογία και παρουσίαση ομάδων κεραμικής ύλης. Μέρος γ΄(Κεφ. 7,8,9,): Κατανομή των ομάδων ανά κατηγορία, ερμηνευτικές προτάσεις και μελλοντικές δυνατότητες διερεύνησης θεμάτων νεολιθικής κεραμικής τεχνολογίας.
description: The subject of this thesis is the neolithic pottery of Thessaly in the Archaeological Museum of Volos. Its goal is the investigation of the social role of pottery through analysis of ware-types and their spatial distribution in the Thessalian plain. It is based on the macroscopic examination of sherds and the recording of their characteristics on a data base, the creation of fabric groups, the examination of their spatial distribution and the extraction of conclusions. It includes an introduction (Chap. 1) with theoretical matters on the social role of pottery. Three parts follow: Part a (Chaps. 2,3,4): It desribes the natural environment of Thessaly, the history of research on topography and pottery. Part b (Chaps. 5,6): It deals with pottery sampling, typology and fabric groups. Part c (Chaps. 7,8,9): It concerns the distribution of groups and ware-types, the discussion of the results, the interpretations and the future research.
Additional file 3 of Effect of mobile learning on academic achievement and attitude of Sudanese dental students: a preliminary study
Creators: name: Mergany, Nissreen Nugud
name: Alam-Elhuda Dafalla
name: Elhadi Awooda
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Additional file 3. Attitude questionnaire.
Cluster Dynamical Mean Field Theory of the Mott Transition
Creators: name: Park, H.
name: Haule, K.
name: Kotliar, G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We address the nature of the Mott transition in the Hubbard model at half-filling using cluster Dynamical Mean Field Theory (DMFT). We compare cluster DMFT results with those of single site DMFT. We show that inclusion of the short range correlations on top of the on-site correlations, already treated exactly in single site DMFT, do not change the nature of the transition between the paramagnetic metal and the paramagnetic Mott insulator, which remains first order. However, the short range correlations reduce substantially the critical $U$ and modify the shape of transition lines. Moreover, they lead to very different physical properties of the metallic and insulating phases near the transition, in particular in the region of the phase diagram where the two solutions coexist. Approaching the transition from the metallic side, we find an anomalous metallic state with very low coherence scale at temperatures as low as $T=0.01t$. The insulating state is characterized by the relatively narrow Mott gap with pronounced peaks at the gap edge.
description: 5 pages, 4 figures
Allestimento di modello sperimentale su animali di tessuto osseo ingegnerizzato
Preparation of experimental animal model for tissue engineered bone
Creators: name: Ragazzini, Sara <1979>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2015
Subjects: MED/29 Chirurgia maxillofacciale

description: Questo studio ha valutato l'efficacia di un approccio rigenerativo utilizzando cellule staminali mesenchimali (MSC) e uno scaffold di idrossiapatite pura e porosa (HA) progettata con tecnologia CAD-CAM per sostituire il condilo dell'articolazione temporomandibolare (ATM). Metodi.Uno scaffolds di HA con porosità totale del 70% è stato prototipato per sostituire i due condili temporomandibolari (sinistro e destro) dello stesso animale. MSC sono state ottenute dalla cresta iliaca ed espanse in coltura. Guide chirurgiche su misura sono state create e utilizzate per esportare la pianificazione virtuale delle linee di taglio dell'osso nell'ambiente chirurgico. Sei pecore sono state sacrificate a 4 mesi
dopo l'intervento.Gli scaffold sono stati espiantati, campioni istologici sono stati preparati, ed è stata eseguota l'analisi istomorfometrica. Risultati.L'analisi della riduzione di porosità per apposizione di osso neoformato mostrata una differenza statisticamente significativa tra la formazione ossea nei condili carichi di MSC rispetto ai condili senza (
description: This study evaluated the efficacy of a regenerative approach using mesenchymal stem cells (MSCs) and CAD-CAM
customized pure and porous hydroxyapatite (HA) scaffolds to replace the temporomandibular joint (TMJ) condyle. Methods. Pure
HAscaffolds with a 70%total porosity volumewere prototyped usingCAD-CAMtechnology to replace the two temporomandibular
condyles (left and right) of the same animal. MSCs were derived from the aspirated iliac crest bone marrow, and platelets were
obtained from the venous blood of the sheep. Custom-made surgical guides were created by direct metal laser sintering and
were used to export the virtual planning of the bone cut lines into the surgical environment. Sheep were sacrificed 4 months
postoperatively. The HA scaffolds were explanted, histological specimens were prepared, and histomorphometric analysis was
performed. Results. Analysis of the porosity reduction for apposition of newly formed bone showed a statistically significant
difference in bone formation between condyles loaded with MSC and condyles without (
Radio-frequency evaporation in an optical dipole trap
Creators: name: Lopes, Raphael
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We present an evaporative cooling technique for atoms trapped in an optical dipole trap that benefits from narrow optical transitions. For an appropriate choice of wavelength and polarization, a single laser beam leads to opposite light-shifts in two internal states of the lowest energy manifold. Radio-frequency coupling between these two states results in evaporative cooling at a constant trap stiffness. The evaporation protocol is well adapted to several atomic species, in particular to the case of Lanthanides such as Er, Dy, and fermionic Yb, but also to alkali-earth metals such as fermionic Sr. We derive the dimensionless expressions that allow us to estimate the evaporation efficiency. As a concrete example, we consider the case of $^{162}$Dy and present a numerical analysis of the evaporation in a dipole trap near the $J'=J$ optical transition at 832 nm. We show that this technique can lead to runaway evaporation in a minimalist experimental setup.
Design and Characterization of Luminescent Silica Nanoparticles
Creators: name: Petrizza, Luca <1983>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2015
Subjects: CHIM/03 Chimica generale e inorganica

description: The aim of this thesis was to design, synthesize and characterize dye-doped silica nanoparticles (DDSNPs) to be used as chemosensors or labels in bioanalytical applications. DDSNPs represent one of the most versatile and useful components in nanomedicine displaying important features such as high colloid stability in water, low toxicity, one-pot inexpensive synthesis and tunable fluorescence emission. Starting from the one-pot and highly reproducible synthesis of “silica-core/PEG shell” DDSNPs based on the use of micelles of Pluronic F127, in which take place both hydrolysis and condensation of the silica precursor and of the dyes functionalized with a triethoxysilane group, we developed DDSNPs suitable for optical and optoacustic imaging, drug loading and chemical sensing obtaining very interesting results for the further development of nanomedicine.
New Application of Piezoelectric Ultrasounds in Maxillo-facial bone surgery
Nuove applicazioni della chirurgia piezoelettrica in chirurgia maxillo-facciale
Creators: name: Piersanti, Luigi <1973>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2015
Subjects: MED/29 Chirurgia maxillofacciale

description: Background:
Piezoelectric instrumentation seems to offer 3 important advantages for cutting bone structures.
Be more precise because it is produced by micro-vibrations from the cutting insert.
Be safer because the ultrasonic frequency used does not affect soft tissue.
Thirdly, the less invasive cutting action produces minor tissue damage and consequently probably a better healing
Aim of the Study:
The aim of this study is to evaluate the effectiveness of piezoelectric device capability in maxillo-facial surgery, in order to take advantage of these favourable capacity. 
Material and Methods:
Considering the several potential application of the piezoelectric technology in Orthognathic, Oncologic and Extractive surgery, we would like to design  protocols in order to verify how this new device can modify the surgical technique, the surgical time, the patients healing and its quality of life.
Results:
Due to the precise Piezosurgery cut, we can manage the Cad-Cam-Custom Made plates protocol in Oncologic Surgery and in Orthognatic Surgery increasing our percentage of comparison between the 3D preoperative plan and the surgical execution.
We also found a better quality of life impaction in Patient who underwent and extractive surgery
Conclusion:
Piezosurgery device seems to be a strong surgical aid were safe and precise cut are needed and its capability to reduce the discomfort Patients need to be study in deep also in major surgery like Orthognatic and Oncologic surgery.
Quench dynamics of quasi-periodic systems exhibiting Rabi oscillations of two-level integrals of motion
Creators: name: Benini, Leonardo
name: Naldesi, Piero
name: Römer, Rudolf A.
name: Roscilde, Tommaso
Publisher: name: arXiv
Year: 2021
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: The elusive nature of localized integrals of motion (or l-bits) in disordered quantum systems lies at the core of some of their most prominent features, i.e. emergent integrability and lack of thermalization. Here, we study the quench dynamics of a one-dimensional model of spinless interacting fermions in a quasi-periodic potential with a localization-delocalization transition. Starting from an unentangled initial state, we show that in the strong disorder regime an important subset of the $l$-bits can be explicitly identified with strongly localized two-level systems, associated with particles confined on two lattice sites. The existence of such subsystems forming an ensemble of nearly free l-bits is found to dominate the short-time dynamics of experimentally relevant quantities, such as the Loschmidt echo and the particle imbalance. We investigate the importance of the choice of the initial state by developing a second quench protocol, starting from the ground-state of the model at different initial disorder strengths and monitoring the quench dynamics close to the delicate ETH-MBL transition regime.
description: 15 pages, 5 Figures. Submitted to the 2020 Localization Special Issue of Annals of Physics
[Phrase and sentence elicitation]
Creators: name: Jiménez García, Otelia
name: Macaulay, Monica
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2020
Subjects: Chalcatongo de Hidalgo Mixtec language

description: Work on June 16 begins midway through 001. See pages 117-119 and 1-4 of associated field notes.
Exploring the pulsational properties of two ZZ Ceti stars
Creators: name: Bognár, Zs.
name: Kalup, Cs.
name: Sódor, Á.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Context. We continued our ground-based observing project with the season-long observations of ZZ Ceti stars at Konkoly Observatory. Our present targets are the newly discovered PM J22299+3024, and the already known LP 119-10 variables. LP 119-10 was also observed by the TESS (Transiting Exoplanet Survey Satellite) space telescope in 120-second cadence mode. Methods. We performed standard Fourier analysis of the daily, weekly, and the whole data sets, together with test data of different combinations of weekly observations. We then performed asteroseismic fits utilising the observed and the calculated pulsation periods. For the calculations of model grids necessary for the fits, we applied the 2018 version of the White Dwarf Evolution Code. Results. We derived six possible pulsation modes for PM J22299+3024, and five plus two TESS pulsation frequencies for LP 119-10. Note that further pulsation frequencies may be present in the data sets, but we found their detection ambiguous, so we omitted them from the final frequency list. Our asteroseismic fits of PM J22299+3024 give 11 400 K and 0.46 Msun for the effective temperature and the stellar mass. The temperature is ~800 K higher, while the mass of the model star is exactly the same as it was earlier derived by spectroscopy. Our model fits of LP~119-10 put the effective temperature in the range of 11 800 - 11 900 K, which is again higher than the spectroscopic 11 290 K value, while our best model solutions give M* = 0.70 Msun mass for this target, near to the spectroscopic value of 0.65 Msun, likewise in the case of PM J22299+3024. The seismic distances of our best-fitting model stars agree with the Gaia astrometric distances of PM J22299+3024 and LP 119-10 within the errors, validating our model results.
description: 12 pages, 15 figures, accepted for publication in Astronomy & Astrophysics
Nearby early-type galaxies with ionized gas. III. Analysis of line-strength indices with new stellar population models
Creators: name: Annibali, F.
name: Bressan, A.
name: Rampazzo, R.
name: Zeilinger, W. W.
name: Danese, L.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this paper we study the underlying stellar population of a sample of 65 nearby early-type galaxies predominantly located in low density environments. Ages, metallicities and [alpha/Fe] ratios have been derived through the comparison of Lick indices measured at different galacto-centric distances with new SSP models which account for the presence of alpha/Fe enhancement. The SSPs cover a wide range of ages, metallicities and [alpha/Fe] ratios. To derive the stellar population parameters we have devised an algorithm based on the probability density function. We derive a large spread in age ((1-15) Gyrs). Age does not show any significant trend with central velocity dispersion sigma_c but E galaxies appear on average older than S0. On the contrary, an increasing trend of metallicity and [alpha/Fe] with sigma_c is observed, testifying that the chemical enrichment was more efficient and the duration of the star formation shorter in more massive galaxies. We have also sought for possible correlations with the local galaxy density but neither metallicity nor alpha-enhancement show clear trends. However we find that while low density environments (LDE) contain very young objects (from 1 to 4 Gyr), none of the galaxies in the higher density environments (HDE) is younger than 5 Gyrs. Considering the lack of environmental effect on the [alpha/Fe] ratio and the high value of [alpha/Fe] in some young massive objects, we argue that young galaxies in LDE are more likely due to recent rejuvenation episodes. By comparing the number of rejuvenated objects with the total number of galaxies in our sample, and by means of simple two-SSP component models, we estimate that, on average, the rejuvenation episodes do not involve more than 25 % of the total galaxy mass.
description: Final version as it will appear in A&A. Typos in the Abstract and Conclusions have been corrected