cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Materiali polimerici per applicazioni fotovoltaiche: sviluppo di nuove tecnologie a basso costo
Creators: name: Fusco, Luigi
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2010

description: L’attività di ricerca ha riguardato lo studio e l’ottimizzazione di sottili layer da utilizzare per la realizzazione di celle solari a film sottile a base di silicio amorfo su substrati flessibili e di basso costo come quelli polimerici. La cella solare si compone della sovrapposizione di strati differenti, per caratteristiche chimiche,dilatazione termica,adesione.
Nella configurazione substrato il polimero rappresenta il substrato sul quale vengono depositati in successione l’elettrodo metallico, il silicio amorfo e l’elettrodo frontale trasparente.
Per l’ottimizzazione del matching meccanico tra il polimero e gli altri strati della cella solare e per migliorare l’adesione tra polimero ed elettrodo metallico, si è pensato all’interposizione di uno strato di adattamento, mediante la deposizione di un silica-like con specifiche funzionalità chimiche per promuovere l’adesione al polimero.
Le temperature relativamente basse richieste per la deposizione della cella su polimero implicano un incremento della gap ottica dello strato intrinseco del silicio con il risultato di un basso valore della corrente di corto circuito (Jsc). Allo scopo di compensare questo effetto, il back-reflector, realizzato in argento, deve avere proprietà di light-scattering.  Si è reso, quindi, necessario sviluppare processi di testurizzazione idonei ad ottenere substrati con superfici di appropriatà rugosità al fine di migliorare le proprietà di multiriflessione della luce nel dispositivo.
Infine è stato condotto uno studio  del semiconduttore trasparente utilizzato per il contatto posteriore e frontale in ITO (ossido di indio e stagno) mediante ottimizzazione dei parametri di deposizione per sputtering.
First joint search for gravitational-wave bursts in LIGO and GEO600 data
Creators: name: LIGO Scientific Collaboration
name: Abbott, B.
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present the results of the first joint search for gravitational-wave bursts by the LIGO and GEO600 detectors. We search for bursts with characteristic central frequencies in the band 768 to 2048 Hz in the data acquired between the 22nd of February and the 23rd of March, 2005 (fourth LSC Science Run - S4). We discuss the inclusion of the GEO600 data in the Waveburst-CorrPower pipeline that first searches for coincident excess power events without taking into account differences in the antenna responses or strain sensitivities of the various detectors. We compare the performance of this pipeline to that of the coherent Waveburst pipeline based on the maximum likelihood statistic. This likelihood statistic is derived from a coherent sum of the detector data streams that takes into account the antenna patterns and sensitivities of the different detectors in the network. We find that the coherentWaveburst pipeline is sensitive to signals of amplitude 30 - 50% smaller than the Waveburst-CorrPower pipeline. We perform a search for gravitational-wave bursts using both pipelines and find no detection candidates in the S4 data set when all four instruments were operating stably.
description: 30 pages, 8 figures
HYDROLOGICAL AND STABILITY MODELLING OF INITIAL LANDSLIDES TRIGGERING DEBRIS FLOWS IN ASH-FALL DEPOSITS COVERING HILLSLOPES SURROUNDING SOMMA-VESUVIUS (SOUTHERN ITALY).
Creators: name: Napolitano, Elisabetta
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2010

description: Rainfall-induced debris flows involving ash-fall pyroclastic deposits covering steep mountain slopes that surround the Somma-Vesuvius volcano, are natural events representing the main cause of risk for urban settlements located at footslopes. The presented research was based on the review of the wide scientific literature and was aimed to the improvement of some crucial aspects regarding the initiation of debris flows by means of field and laboratory experimental methods and modelling applied in representative sample areas of the Sarno Mountain Range, where deadly flow-like landslides initiated on May 5th - 6th 1998.
Detailed stratigraphic and topographic surveys carried out in three representative initiation areas led to recognise that, depending on the slope angle, ash-fall pyroclastic deposits are discontinuously distributed along slopes, showing a total thickness that varies from a maximum value recognisable in the slope angle range lower than 30° up to be negligible for slope angle values greater than 50°, thus being strongly related to bedrock morphology itself. This distribution influences stratigraphical setting of ash-fall pyroclastic mantle leading to a downward thinning up to pinch out of pyroclastic horizons. Three fundamental quantitative engineering geological models were identified, in which the most part of the initial landslides occurred in May 1998 can be classified: i) knickpoints, characterised by a downward progressive thinning of pyroclastic mantle; ii) rocky scarps, identified as causing an abrupt interruption of pyroclastic mantle; iii) road cuts in pyroclastic mantle, whereas they occur in a critical slope angle range.
Coupled geotechnical and saturated/unsaturated hydraulic characterisations of pyroclastic soils, led to the hydro-mechanical modelling of slope stability in the initiation areas. Results  demonstrated that initial instabilities of pyroclastic mantle can occur without a hydraulic contribution from the carbonate bedrock, therefore critical increase of pore pressure derives from the infiltration and throughflow processes. Finally, the hydro-mechanical modelling of slope stability permitted the deterministic definition of intensity/duration hydrological thresholds.
A Parameterized Post-Friedmann Framework for Modified Gravity
Creators: name: Hu, Wayne
name: Sawicki, Ignacy
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We develop a parameterized post-Friedmann (PPF) framework which describes three regimes of modified gravity models that accelerate the expansion without dark energy. On large scales, the evolution of scalar metric and density perturbations must be compatible with the expansion history defined by distance measures. On intermediate scales in the linear regime, they form a scalar-tensor theory with a modified Poisson equation. On small scales in dark matter halos such as our own galaxy, modifications must be suppressed in order to satisfy stringent local tests of general relativity. We describe these regimes with three free functions and two parameters: the relationship between the two metric fluctuations, the large and intermediate scale relationships to density fluctuations and the two scales of the transitions between the regimes. We also clarify the formal equivalence of modified gravity and generalized dark energy. The PPF description of linear fluctuation in f(R) modified action and the Dvali-Gabadadze-Porrati braneworld models show excellent agreement with explicit calculations. Lacking cosmological simulations of these models, our non-linear halo-model description remains an ansatz but one that enables well-motivated consistency tests of general relativity. The required suppression of modifications within dark matter halos suggests that the linear and weakly non-linear regimes are better suited for making complementary test of general relativity than the deeply non-linear regime.
description: 12 pages, 9 figures, additional references reflect PRD published version
Missing Mass in Collisional Debris from Galaxies
Creators: name: Bournaud, F.
name: Duc, P. -A.
name: Brinks, E.
name: Boquien, M.
name: Amram, P.
name: Lisenfeld, U.
name: Koribalski, B. S.
name: Walter, F.
name: Charmandaris, V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Recycled dwarf galaxies can form in the collisional debris of massive galaxies. Theoretical models predict that, contrary to classical galaxies, they should be free of non-baryonic Dark Matter. Analyzing the observed gas kinematics of such recycled galaxies with the help of a numerical model, we demonstrate that they do contain a massive dark component amounting to about twice the visible matter. Staying within the standard cosmological framework, this result most likely indicates the presence of large amounts of unseen, presumably cold, molecular gas. This additional mass should be present in the disks of their progenitor spiral galaxies, accounting for a significant part of the so-called missing baryons.
description: Published in Science. Complete manuscript with appendix available at http://www.uni-sw.gwdg.de/~paduc/articles/bournaud_tdg_dm.pdf . Published online in Science Express May 10 issue at http://www.sciencemag.org/sciencexpress/recent.dtl
Machine Learning Techniques for Automated Wafer Health Assessment using Wafer Test Data
Creators: name: Zernig, Anja
name: Schrunner, Stefan
name: Pleschberger, Martin
name: Jenul, Anna
name: Scheiber, Michael
name: Kaestner, Andre
Publisher: name: Zenodo
Year: 2019

description: Main focus of modern manufacturing companies like the semiconductor industry is put on the automation of repetitive tasks. This coincides with the actual academic trend of using Machine Learning (ML) techniques for automatically gaining knowledge out of available data sources, using e.g. self-learning decision rules based on the underlying training data. In this paper we tackle the industrial need for quality monitoring of produced wafers via investigating wafermaps, using Machine Learning methods, to automatically detect critical patterns, which can be linked to production variability. Due to the high number of wafermaps, this investigation needs to be performed in an automated manner. A suitable solution is to design a decision support system, which notifies the expert in cases, when the calculated health factor of a wafer reaches a critical limit. The health factor is based on the presence of critical process patterns, detected in the set of wafermaps available per wafer.
Chaotic Diffusion of Resonant Kuiper Belt Objects
Creators: name: Tiscareno, Matthew S.
name: Malhotra, Renu
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We carried out extensive numerical orbit integrations to probe the long-term chaotic dynamics of the two strongest mean motion resonances of Neptune in the Kuiper belt, the 3:2 (Plutinos) and 2:1 (Twotinos). Our primary results include a computation of the relative volumes of phase space characterized by large- and small-resonance libration amplitudes, and maps of resonance stability measured by mean chaotic diffusion rate. We find that Neptune's 2:1 resonance has weaker overall long-term stability than the 3:2 -- only ~15% of Twotinos are projected to survive for 4 Gyr, compared to ~27% of Plutinos, based on an extrapolation from our 1-Gyr integrations. We find that Pluto has only a modest effect, causing a ~4% decrease in the Plutino population that survives to 4 Gyr. Given current observational estimates, and assuming an initial distribution of particles proportional to the local phase space volume in the resonance, we conclude that the primordial populations of Plutinos and Twotinos formerly made up more than half the population of the classical and resonant Kuiper Belt. We also conclude that Twotinos were originally nearly as numerous as Plutinos; this is consistent with predictions from early models of smooth giant planet migration and resonance sweeping of the Kuiper Belt, and provides a useful constraint for more detailed models.
description: 26 pages, 8 figures; accepted to AJ
Explicit microstates at the Schwarzschild horizon
Creators: name: Giveon, Amit
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The claim that the microstates of Schwarzschild black holes in perturbative string theory amount to the modes of long folded strings in the vicinity of its horizon is supported by more evidence.
description: 7 pages; references and footnotes added
The Origination and Diagnostics of Uncaptured Beam in the Tevatron and Its Control by Electron Lenses
Creators: name: Zhang, Xiao-Long
name: Bishofberger, Kip
name: Kamerdzhiev, Vsevolod
name: Lebedev, Valery
name: Shiltsev, Vladimir
name: Thurman-Keup, Randy
name: Tollestrup, Alvin
Publisher: name: arXiv
Year: 2008
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: In the Collider Run II, the Tevatron operates with 36 high intensity bunches of 980 GeV protons and antiprotons. Particles not captured by the Tevatron RF system pose a threat to quench the superconducting magnet during acceleration or at beam abort. We describe the main mechanisms for the origination of this uncaptured beam, and present measurements of its main parameters by means of a newly developed diagnostics system. The Tevatron Electron Lens is effectively used in the Collider Run II operation to remove uncaptured beam and keep its intensity in the abort gaps at a safe level.
description: 36 pp, 15 Figs, submitted for publicati5on in Phys. Rev. Special Topics Accel. Beams
Personality correlates of key roles in informal advice networks
Creators: name: Battistoni, E.
name: Colladon, A. Fronzetti
Publisher: name: arXiv
Year: 2021
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Social and Information Networks (cs.SI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Prior research has emphasised the importance of informal advice networks for knowledge sharing and peer learning. We use Social Network Analysis to detect individuals who play a strategic role in advice networks. Even if roles have been extensively described, how to identify people within them is still an open issue. Furthermore, we investigate whether an association between key players and the big five personality traits exists, by means of nonparametric statistics. To achieve this, we present a case study which involves roughly 180 university students. We found 21 of them playing a key role. Results give evidence of significant associations between key positions and Conscientiousness, Neuroticism and Agreeableness; whereas no evidence is found for a relationship with Extraversion or Openness to Experience. Consistently, personality emerges as a relevant indicator for predicting people who are more likely to play a strategic role, even when connection patterns are unknown.
The role of spatial and size refuges in the interaction between juvenile barnacles and grazing limpets
Creators: name: Miller, Kristina Marie
Publisher: name: University of British Columbia
Year: 2010

description: The effect of grazing by limpets (Collisella digitalis) on the distribution and abundance of three species of juvenile barnacles (Balanus glandula, Balanus crenatus, and Semibalanus cariosus) was assessed using slate settling plates with different types of refuges, as well as the use of fenced areas on natural rock. The two possible effects of limpets on juvenile barnacles', namely ingestion and bulldozing, in relation to types of refuges utilized, were further studied in the laboratory. The field studies showed that while shallow depressions offered only minimal refuge against being grazed, proximity to adult barnacles was a more effective refuge. The minimal degree of protection offered by depressions is explained by the unexpected ability of the limpets to graze and ingest juvenile barnacles from most depressions. When Balanus glandula and Balanus crenatus reached a basal area of 5-6.7mm² , the barnacles had obtained a refuge in size from mortality caused by the activity of Collisella digitalis. Semibalanus cariosus reached a refuge-size at a smaller basal area and, thus, at a younger age, due to its overall stronger attachment to the substrate.
Nutritional approaches for prevention and control of gastrointestinal parasites in livestock
Creators: name: Dr. Rashmi Mishra1, Dr. Pashupathi M2
Publisher: name: The Science world a Monthly e magazine
Year: 2023

description: Gastrointestinal parasitism has been long considered as a major challenge for the health and the welfare of animals. Parasitism, especially by helminth parasites, impairs health by causing inappetence, diarrhoea, anaemia and, in severe cases, death. In addition to compromising health and welfare, parasitism impairs productivity and results in poor growth and reproductive performance. Livestock are constantly exposed to gastrointestinal parasites through grazing. They eventually acquire immunity to the parasites and successfully regulate them, although their immunity may break down during certain stages of their lives. For the times when animals are susceptible to gastrointestinal parasites, control of parasitism has traditionally depended on the use of anthelmintic drugs. However, occurrence of resistance to anthelmintics is now a worldwide problem. Anthelmintic resistance in gastrointestinal parasites of cattle is an increasing problem, but remains less prevalent than in small ruminants. In addition, there is increased awareness about drug residues that potentially enter the food chain and are detrimental for the environment. Thus, there is an urgent requirement to minimize the regular, preventive use of anthelmintics and combine it with non-chemical means to control the parasitic infection.
Symplectic gauge invariant reformulation of a free particle system on toric geometry
Creators: name: S, Anjali
name: Gupta, Saurabh
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We deduce the constraint structure and subsequently quantize a free particle system residing on a torus satisfying the geometric constraint $(r-a)=0$, within the framework of modified Faddeev-Jackiw formalism. Further, we reformulate the system as a gauge theory by the means of symplectic gauge invariant formalism. Finally, we establish the off-shell nilpotent and absolutely anti-commuting (anti-)BRST symmetries of the reformulated gauge invariant theory.
description: LaTeX file, 15 pages, no figures, accepted for publication in EPL
Aspetti della Riforma Agraria in America Latina: 1960-1964
Creators: name: Impagliazzo, Giovanni Battista
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2011

description: La ricerca ha analizzato le modalità e i tempi attraverso cui i progetti di Riforma Agraria sono stati elaborati e hanno influenzato le politiche economiche in America Latina. L’analisi si è focalizzata temporalmente tra la rivoluzione castrista di Cuba del 1959, l’elezione di John Kennedy in qualità di 35° Presidente degli Stati Uniti nel 1961 e la proposta della “Alianza para el Progreso”
Exploring software developers' work practices: Task differences, participation, engagement, and speed of task resolution
Creators: name: Licorish, Sherlock A.
name: MacDonell, Stephen G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: In seeking to understand the processes enacted during software development, an increasing number of studies have mined software repositories. In particular, studies have endeavored to show how teams resolve software defects. Although much of this work has been useful, we contend that large-scale examinations across the range of activities that are commonly performed, beyond defect-related issues alone, would help us to more fully understand the reasons why defects occur as well as their consequences. More generally, these explorations would reveal how team processes occur during all software development efforts. We thus extend such studies by investigating how software practitioners work while undertaking the range of software tasks that are typically performed. Multiple forms of analyses of a longitudinal case study reveal that software practitioners were mostly involved in fixing defects, and that their engagement covaried depending on the nature of the work they were performing. Furthermore, multiple external factors affected speed of task resolution. Our outcomes suggest that behavioral and intrinsic issues may interact with extrinsic factors becoming significant predictors of the speed of software task resolution.
description: Journal paper, 21 pages, 3 figures, 6 tables
Do the QCD sum rules support four-quark states?
Creators: name: Matheus, R. D.
name: Navarra, F. S.
name: Nielsen, M.
name: da Silva, R. Rodrigues
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We test the validity of the QCD sum rules applied to the light scalar mesons, the charmed mesons $D_{s0}(2317)$ and $D_{s1} (2460)$, and the X(3872) axial meson, considered as tetraquark states. We find that, with the studied currents, it is possible to find an acceptable Borel window only for the X(3872) meson. In such a Borel window we have simultaneouly a good OPE convergence and a pole contribution which is bigger than the continuum contribution. We interpret these results as a strong argument against the assignment of a tetraquark structure for the light scalars and the $D_{s0}(2317)$ and $D_{s1} (2460)$ mesons.
description: Latex file 6 pages, 6 eps figures, minor changes, references added
Lysimeter measurements of salal understory evapotranspiration and forest soil evaporation after salal removal in a Douglas-fir plantation
Creators: name: Osberg, Peter Martin
Publisher: name: University of British Columbia
Year: 2010

description: Two weighing lysimeters were constructed in a 23-year-old Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) stand. The salal (Gaultheria shallon Pursh.) understory was mechanically removed from a 30 x 40 m plot and one lysimeter was located at the center of this plot to measure daily forest soil evaporation (E[sub s]). For 8 consecutive days, in August 1984, E[sub s] ranged between 0.08 and 0.34 mm d⁻¹ which was 15-18% of the daily total stand evapotranspiration. In July 1985, after removing salal from the second lysimeter, which was positioned under a less dense tree canopy, E[sub s] was 0.34 - 0.41 mm d⁻¹ which was 17-21% of the daily whole stand evapotranspiration. Forest floor diffusive resistances (r[sub co]), computed by rearranging the Penman-Monteith equation, were found to range between 900 and 3500 s m⁻¹. The measured daily evapotranspiration rate from the understory (E[sub t]) with salal present was 0.60 - 0.84 mm d⁻¹, which was equivalent to 30-42% of the daily stand evapotranspiration. The dependence on windspeed of the bulk aerodynamic resistance (s m⁻¹) to vapour transport (r[sub A]) between the salal canopy and measurement height (0.3 m above the top of the salal canopy) was found to be r[sub A] = 25.2 ū[sup – 0.554], where ū is the mean windspeed (m s⁻¹) at measurement height. Approximately 70-75% of r[sub A] was estimated to be attributable to the leaf boundary-layer resistance. The evaporation rate from wet foliage was found to be 5 times greater than the transpiration rate from dry foliage exposed to similar meteorological conditions. Analysis of the relative importance of net available energy flux density and advective processes in determining the latent heat flux density from the understory yielded a range of Q values between 0.15 and 0.22. The vapour pressure deficit below the tree canopy was found to be largely determined by the vapour pressure deficit above the tree canopy, with very little local adjustment.
Bridge Successive States
Creators: name: Yan, Shuang
name: Gu, Changgui
name: Yang, Huijie
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 490104
subject: Complex systems

description: A concept called temporal network of evolutionary matrices is proposed to identify the evolutionary laws for complex systems. The key idea is to separate the trajectory into overlapping segments. The time step between each pair of successive states is assumed to be so short that they can be bridged by a matrix. And the time duration covered by the segment is assumed to be so short that the matrices bridging the pairs of successive states are identical, called evolutionary matrix. The trajectory is them mapped to a temporal network of evolutionary matrices (”bridges”), describing the evolutionary law. Investigations on the series generated with the fractional Brownian motion, and the records for stock markets distributed over the world show that, there exist in all the evolutionary angle series long?range correlations. For the fBm increment series, the series generated with the Heston model, and stock index series, the influences of variables on themselves and the influences between adjacent variables form the backbone of the temporal networks. Non-adjacent impacts can fluctuate simultaneously. The markets in Japan as the center affects Mainland China and is unilaterally affected by the America and Mainland China. After financial crisis, there appear some abrupt and large fluctuations of the evolutionary matrices for the components of the Dow Jones stock market.
Community Structure in Congressional Cosponsorship Networks
Creators: name: Zhang, Yan
name: Friend, A. J.
name: Traud, Amanda L.
name: Porter, Mason A.
name: Fowler, James H.
name: Mucha, Peter J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: We study the United States Congress by constructing networks between Members of Congress based on the legislation that they cosponsor. Using the concept of modularity, we identify the community structure of Congressmen, as connected via sponsorship/cosponsorship of the same legislation, to investigate the collaborative communities of legislators in both chambers of Congress. This analysis yields an explicit and conceptually clear measure of political polarization, demonstrating a sharp increase in partisan polarization which preceded and then culminated in the 104th Congress (1995-1996), when Republicans took control of both chambers. Although polarization has since waned in the U.S. Senate, it remains at historically high levels in the House of Representatives.
description: 8 pages, 4 figures (some with multiple parts), to appear in Physica A; additional background info and explanations added from last version
Experimental approaches to the difference in the Casimir force through the varying optical properties of boundary surface
Creators: name: Castillo-Garza, R.
name: Chang, C. -C.
name: Jimenez, D.
name: Klimchitskaya, G. L.
name: Mostepanenko, V. M.
name: Mohideen, U.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose two novel experiments on the measurement of the Casimir force acting between a gold coated sphere and semiconductor plates with markedly different charge carrier densities. In the first of these experiments a patterned Si plate is used which consists of two sections of different dopant densities and oscillates in the horizontal direction below a sphere. The measurement scheme in this experiment is differential, i.e., allows the direct high-precision measurement of the difference of the Casimir forces between the sphere and sections of the patterned plate or the difference of the equivalent pressures between Au and patterned parallel plates with static and dynamic techniques, respectively. The second experiment proposes to measure the Casimir force between the same sphere and a VO${}_2$ film which undergoes the insulator-metal phase transition with the increase of temperature. We report the present status of the interferometer based variable temperature apparatus developed to perform both experiments and present the first results on the calibration and sensitivity. The magnitudes of the Casimir forces and pressures in the experimental configurations are calculated using different theoretical approaches to the description of optical and conductivity properties of semiconductors at low frequencies proposed in the literature. It is shown that the suggested experiments will aid in the resolution of theoretical problems arising in the application of the Lifshitz theory at nonzero temperature to real materials. They will also open new opportunities in nanotechnology.
description: 23 pages of the text, 2 tables, and captions of 12 figures (to appear in Phys. Rev. A)
Angular dependences in inclusive two-hadron production at BELLE
Creators: name: Boer, Daniel
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A collection of results is presented relevant for the analysis of azimuthal asymmetries in inclusive two-hadron production at BELLE. The aim of this overview is to provide theoretical ingredients necessary to extract the Collins effect fragmentation function. The latter arises within the Collins-Soper factorization formalism, which describes both the transverse momentum and Q^2 dependence of the cross section and its angular dependences at low and moderate transverse momentum. Since the Collins effect is not the only source of angular dependences, a discussion of various other effects is included. This concerns higher twist contributions, photon-Z-boson interference effects, radiative corrections, beam polarization and weak decays. Furthermore, different frames, transverse momentum weighting and ratios of asymmetries are discussed. These issues are all of relevance for the unambiguous measurement of the Collins effect.
description: 37 pages, 7 eps figures; mostly modifications in sections IX and XI, minor changes also in sections III,VI,XV
NANOVETTORI A BASE LIPIDICA PER LA VEICOLAZIONE DI FARMACI
Creators: name: Scognamiglio, Immacolata
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2011

description: Con il termine di nanotecnologie si indicano quell’insieme di conoscenze necessarie per la progettazione, caratterizzazione, produzione ed applicazione di strutture, dispositivi e sistemi di dimensioni nanometriche. In campo biomedico l’impiego di nanotecnologie offre notevoli vantaggi, quali la possibilità di direzionare il farmaco in un determinato distretto cellulare o in un organo specifico, favorire il passaggio di farmaci attraverso le barriere biologiche, consentire la somministrazione di farmaci poco solubili o instabili nei fluidi biologici (es. molecole di natura biotecnologia).
Tra i diversi nonosistemi sviluppati a scopo terapeutico, quelli basati su materiali lipidici hanno riscosso fino ad ora i maggiori successi, con diversi prodotti attualmente in commercio e numerosi in sperimentazione clinica. Il successo di tali vettori è dovuto sicuramente alla biocompatibilità e biodegradabilità della maggior parte dei materiali utilizzati, alla facilità di preparazione, ai costi contenuti e soprattutto alla versatilità d’impiego che ne consente l’utilizzo per svariati scopi e per diverse classi di farmaci. I capostipiti di nanovettori di natura lipidica sono sicuramente i liposomi, vescicole in cui una o più membrane lipidiche racchiudono una soluzione acquosa. Nel corso degli anni, i liposomi hanno subito una continua evoluzione mirata a soddisfare diverse esigenze terapeutiche e diagnostiche. Sono così stati sviluppati liposomi a lunga circolazione, destinati alla somministrazione per via endovenosa, che hanno dimostrato grandi potenzialità nella terapia antitumorale, con possibilità di funzionalizzare il carrier per un rilascio sempre più sito specifico; altre vie di somministrazione, quale quella topica, hanno visto lo sviluppo di nuovi carrier definiti liposomi ultraflessibili (o transferosomi) ed etosomi.
L’attività di ricerca nell’ambito del Corso di Dottorato è stata incentrata sullo sviluppo di nuovi nanosistemi lipidici per la veicolazione di farmaci. La ricerca è stata articolata su due direttrici principali, nelle quali sono state affrontate le diverse problematiche connesse alla progettazione ed allo sviluppo di nanosistemi per la veicolazione di farmaci destinati alla somministrazione per via sistemica e per via topica.
Variations on a theme of Heisenberg, Pauli and Weyl
Creators: name: Kibler, M. R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The parentage between Weyl pairs, generalized Pauli group and unitary group is investigated in detail. We start from an abstract definition of the Heisenberg-Weyl group on the field R and then switch to the discrete Heisenberg-Weyl group or generalized Pauli group on a finite ring Z_d. The main characteristics of the latter group, an abstract group of order d**3 noted P_d, are given (conjugacy classes and irreducible representation classes or equivalently Lie algebra of dimension d**3 associated with P_d). Leaving the abstract sector, a set of Weyl pairs in dimension d is derived from a polar decomposition of SU(2) closely connected to angular momentum theory. Then, a realization of the generalized Pauli group P_d and the construction of generalized Pauli matrices in dimension d are revisited in terms of Weyl pairs. Finally, the Lie algebra of the unitary group U(d) is obtained as a subalgebra of the Lie algebra associated with P_d. This leads to a development of the Lie algebra of U(d) in a basis consisting of d**2 generalized Pauli matrices. In the case where d is a power of a prime integer, the Lie algebra of SU(d) can be decomposed into d-1 Cartan subalgebras.
description: Dedicated to the memory of Mosh\'e Flato on the occasion of the tenth anniversary of his death
Universality of Abelian and non-Abelian Wannier functions in one dimension
Creators: name: Piasotski, Kiryl
name: Pletyukhov, Mikhail
name: Weber, Clara S.
name: Klinovaja, Jelena
name: Kennes, Dante M.
name: Schoeller, Herbert
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Within a Dirac model in $1+1$ dimensions, a prototypical model to describe low-energy physics for a wide class of lattice models, we propose a field-theoretical version for the representation of Wannier functions, the Zak-Berry connection, and the geometric tensor. In two natural Abelian gauges we present universal scaling of the Dirac Wannier functions in terms of four fundamental scaling functions that depend only on the phase $γ$ of the gap parameter and the charge correlation length $ξ$ in an insulator. The two gauges allow for a universal low-energy formulation of the surface charge and surface fluctuation theorem, relating the boundary charge and its fluctuations to bulk properties. Our analysis describes the universal aspects of Wannier functions for the wide class of one-dimensional generalized Aubry-André-Harper lattice models. In the low-energy regime of small gaps we demonstrate universal scaling of all lattice Wannier functions and their moments in the corresponding Abelian gauges. We also discuss non-Abelian lattice gauges and find that lattice Wannier functions of maximal localization show universal scaling and are uniquely related to the Dirac Wannier function of the lower band. Our results present evidence that universal aspects of Wannier functions and of the boundary charge are uniquely related and can be elegantly described within universal low-energy theories.
description: 45 pages, 14 figures
Программа дисциплины «Этногеография и география религий»
Creators: name: А.Н., Ямсков
Publisher: name: Zenodo
Year: 2008
Subjects: этногеография
этническая география
культурная география
географическое образование
этнологическое образование

description: Программа нормативной дисциплины на 40 аудиторных часов (5-й год обучения), читавшейся автором на Географическом факультете Московского Городского Педагогического Университета в конце 2000-х – начале 2010-х гг.
Puncture Evolution of Schwarzschild Black Holes
Creators: name: Brown, J. David
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The moving puncture method is analyzed for a single, non-spinning black hole. It is shown that the puncture region is not resolved by current numerical codes. As a result, the geometry near the puncture appears to evolve to an infinitely long cylinder of finite areal radius. The puncture itself actually remains at spacelike infinity throughout the evolution. In the limit of infinite resolution the data never become stationary. However, at any reasonable finite resolution the grid points closest to the puncture are rapidly drawn into the black hole interior by the Gamma-driver shift condition. The data can then evolve to a stationary state. These results suggest that the moving puncture technique should be viewed as a type of "natural excision".
description: This is the final version to be published in PRD. One important change: the phrase "excision by under resolution" is replaced by the more appropriate phrase "natural excision"
Probabilistic computing with p-bits
Creators: name: Kaiser, Jan
name: Datta, Supriyo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Emerging Technologies (cs.ET)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Quantum Physics (quant-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Digital computers store information in the form of bits that can take on one of two values 0 and 1, while quantum computers are based on qubits that are described by a complex wavefunction, whose squared magnitude gives the probability of measuring either 0 or 1. Here, we make the case for a probabilistic computer based on p-bits, which take on values 0 and 1 with controlled probabilities and can be implemented with specialized compact energy-efficient hardware. We propose a generic architecture for such p-computers and emulate systems with thousands of p-bits to show that they can significantly accelerate randomized algorithms used in a wide variety of applications including but not limited to Bayesian networks, optimization, Ising models, and quantum Monte Carlo.
YASSAVIY VA XUDOYDOD HIKMATLARINING MAVZU VA OBRAZ XUSUSIYATLARI
Creators: name: Musayeva, Moxiraxon
Publisher: name: Zenodo
Year: 2024

description: Maqolada Ahmad Yassaviy va Xudoydod hikmatlarining mavzu va obraz xususiyatlari tahlil qilingan.
High-Quality Automated Program Repair
Creators: name: Motwani, Manish
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Automatic program repair (APR) has recently gained attention because it proposes to fix software defects with no human intervention. To automatically fix defects, most APR tools use the developer-written tests to (a) localize the defect, and (b) generate and validate the automatically produced candidate patches based on the constraints imposed by the tests. While APR tools can produce patches that appear to fix the defect for 11-19% of the defects in real-world software, most of the patches produced are not correct or acceptable to developers because they overfit to the tests used during the repair process. This problem is known as the patch overfitting problem. To address this problem, I propose to equip APR tools with additional constraints derived from natural-language software artifacts such as bug reports and requirements specifications that describe the bug and intended software behavior but are not typically used by the APR tools. I hypothesize that patches produced by APR tools while using such additional constraints would be of higher quality. To test this hypothesis, I propose an automated and objective approach to evaluate the quality of patches and propose two novel methods to improve the fault localization and developer-written test suites using natural-language software artifacts. Finally, I propose to use my patch evaluation methodology to analyze the effect of the improved fault localization and test suites on the quality of patches produced by APR tools for real-world defects.
description: 4 pages, ICSE Doctoral Symposium track
Studying the association of online brand importance with museum visitors: An application of the semantic brand score
Creators: name: Colladon, A. Fronzetti
name: Grippa, F.
name: Innarella, R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: Social and Information Networks (cs.SI)
subject: General Economics (econ.GN)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Economics and business
subject: FOS: Physical sciences
subject: I.2.7; J.4; H.4.0

description: This paper explores the association between brand importance and growth in museum visitors. We analyzed 10 years of online forum discussions and applied the Semantic Brand Score (SBS) to assess the brand importance of five European Museums. Our Naive Bayes and regression models indicate that variations in the combined dimensions of the SBS (prevalence, diversity and connectivity) are aligned with changes in museum visitors. Results suggest that, in order to attract more visitors, museum brand managers should focus on increasing the volume of online posting and the richness of information generated by users around the brand, rather than controlling for the posts' overall positivity or negativity.
A BME és MAVIR kutatás-fejlesztés tevékenységei a FARCROSS projektben
Creators: name: Németh, Bálint
name: Hartmann, Bálint
name: Gergő Holló
Publisher: name: Zenodo
Year: 2020
Subjects: dynamic line rating
DLR
overhead lines
transmission system operator
research and development

description: A Budapesti Műszaki és Gazdaságtudományi Egyetem Nagyfeszültségű Laboratóriuma a dinamikus távvezeték terhelhetőség (DLR) alapú komplex távvezetékmenedzsment rendszer fejlesztésén keresztül kapcsolódik be a FARCROSS (FAcilitating Regional CROSS-border Electricity Transmission through Innovation) projektbe. A H2020-as projekt keretében több európai rendszerirányítóval (APG, HOPS, IPTO, NoSBIH, MAVIR) együttműködve kerül kifejlesztésre és implementálásra nyolc átviteli hálózati távvezetékre a DLR-alapú távvezetékmenedzsment rendszer. A fejlesztés során az elsődleges cél egy olyan üzembiztos rendszer létrehozása, amellyel a hálózat nagyobb hatásfokú kihasználása érhető el, továbbá a szélsőséges időjárási körülmények okozta kockázatok csökkenthetők. Ebből adódóan a távvezetékek környezeti paraméterektől függő áramterhelhetőségének meghatározása mellett monitorozásra kerül a sodronyok termikus viselkedése is. Ezt felhasználva egy belógás modellező algoritmus számítja valós időben a feszítőközök belógását és szabadmagasságát a jogi korlátok betartásának, valamint a teljes termikus korlát kihasználása érdekében. További alrendszer keretében pedig az időjárás előrejelzést felhasználva a sodronyokra rakódó természetes pótteher predikciója történik, amely alapján a várható jégképződés típusa, az általa okozott fajlagos pótteher és jégvastagság kerül előrejelzésre.
Bridge Successive States for a Complex System with Evolutionary Matrix
Creators: name: Yan, Shuang
name: Gu, Changgui
name: Yang, Huijie
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 490104
subject: Complex systems

description: A concept called temporal network of evolutionary matrices is proposed to identify the evolutionary laws for complex systems. The key idea is to separate the trajectory into overlapping segments. The time step between each pair of successive states is assumed to be so short that they can be bridged by a matrix. And the time duration covered by the segment is assumed to be so short that the matrices bridging the pairs of successive states are identical, called evolutionary matrix. The trajectory is them mapped to a temporal network of evolutionary matrices (”bridges”), describing the evolutionary law. Investigations on the series generated with the fractional Brownian motion, and the records for stock markets distributed over the world show that, there exist in all the evolutionary angle series long?range correlations. For the fBm increment series, the series generated with the Heston model, and stock index series, the influences of variables on themselves and the influences between adjacent variables form the backbone of the temporal networks. Non-adjacent impacts can fluctuate simultaneously. The markets in Japan as the center affects Mainland China and is unilaterally affected by the America and Mainland China. After financial crisis, there appear some abrupt and large fluctuations of the evolutionary matrices for the components of the Dow Jones stock market.
Minimal obstructions to $(\infty, k)$-polarity in cographs
Creators: name: Contreras-Mendoza, F. Esteban
name: Hernández-Cruz, César
Publisher: name: arXiv
Year: 2021
Subjects: subject: Combinatorics (math.CO)
subject: Discrete Mathematics (cs.DM)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 05C69, 05C70, 05C75, 68R10

description: A graph is a cograph if it does not contain a 4-vertex path as an induced subgraph. An $(s, k)$-polar partition of a graph $G$ is a partition $(A, B)$ of its vertex set such that $A$ induces a complete multipartite graph with at most $s$ parts, and $B$ induces the disjoint union of at most $k$ cliques with no other edges. A graph $G$ is said to be $(s, k)$-polar if it admits an $(s, k)$-polar partition. The concepts of $(s, \infty)$-, $(\infty, k)$-, and $(\infty, \infty)$-polar graphs can be analogously defined. Ekim, Mahadev and de Werra pioneered in the research on polar cographs, obtaining forbidden induced subgraph characterizations for $(\infty, \infty)$-polar cographs, as well as for the union of $(\infty, 1)$- and $(1, \infty)$-polar cographs. Recently, a recursive procedure for generating the list of cograph minimal $(s,1)$-polar obstructions for any fixed integer $s$ was found, as well as the complete list of $(\infty, 1)$-polar obstructions. In addition to these results, complete lists of minimal $(s, k)$-polar cograph obstructions are known only for the pair $(2, 2)$. In this work we are concerned with the problem of characterizing $(\infty, k)$-polar cographs for a fixed $k$ through a finite family of forbidden induced subgraphs. As our main result, we provide complete lists of forbidden induced subgraphs for the cases $k=2$ and $k=3$. Additionally, we provide a partial recursive construction for the general case. By considering graph complements, these results extend to $(s, \infty)$-polar cographs.
Diversity of Trichoptera Fauna and its Correlation with Water Quality Parameters at Pasak Jolasit reservoir, Central Thailand
Creators: name: Taeng-On Prommi, Isara Thani
Publisher: name: คณะสิ่งแวดล้อมและทรัพยากรศาสตร์
Year: 2014
Subjects: water quality, inflow,outflow, Dam, Trichoptera,Pasak Cholasit dam

description: 2, 12, Environment and Natural Resources Journal
K-field kinks in two-dimensional dilaton gravity
Creators: name: Zhong, Yuan
name: Li, Fei-Yu
name: Liu, Xu-Dong
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this work, kinks with non-canonical kinetic energy terms are studied in a type of two-dimensional dilaton gravity model. The linear stability issue is generally discussed for arbitrary static solutions, and the stability criteria are obtained. As an explicit example, a model with cuscuton term is studied. After rewriting the equations of motion into simpler first-order formalism and choosing a polynomial superpotential, an exact self-gravitating kink solution is obtained. The impacts of the cuscuton term are discussed.
description: 8 pages, 1 figure, accepted for publication by Phys. Letts. B