cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Efficient and high accuracy 3-D OCT angiography motion correction in pathology
Creators: name: Ploner, Stefan B.
name: Kraus, Martin F.
name: Moult, Eric M.
name: Husvogt, Lennart
name: Schottenhamml, Julia
name: Alibhai, A. Yasin
name: Waheed, Nadia K.
name: Duker, Jay S.
name: Fujimoto, James G.
name: Maier, Andreas K.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences
subject: I.4.3

description: We propose a novel method for non-rigid 3-D motion correction of orthogonally raster-scanned optical coherence tomography angiography volumes. This is the first approach that aligns predominantly axial structural features like retinal layers and transverse angiographic vascular features in a joint optimization. Combined with the use of orthogonal scans and favorization of kinematically more plausible displacements, the approach allows subpixel alignment and micrometer-scale distortion correction in all 3 dimensions. As no specific structures or layers are segmented, the approach is by design robust to pathologic changes. It is furthermore designed for highly parallel implementation and brief runtime, allowing its integration in clinical routine even for high density or wide-field scans. We evaluated the algorithm with metrics related to clinically relevant features in a large-scale quantitative evaluation based on 204 volumetric scans of 17 subjects including both a wide range of pathologies and healthy controls. Using this method, we achieve state-of-the-art axial performance and show significant advances in both transverse co-alignment and distortion correction, especially in the pathologic subgroup.
description: 22 pages, 11 figures, 4 tables
Creation of a brane world with a bulk scalar field
Creators: name: Aoyanagi, Koh-suke
name: Maeda, Kei-ichi
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate the creation of a brane world with a bulk scalar field. We consider an exponential potential of a bulk scalar field: $V(ϕ)\propto \exp(-2βϕ)$, where $β$ is the parameter of the theory. This model is based on a supersymmetric theory, and includes the Randall-Sundrum model ($β=0$) and the 5-dimensional effective model of the Hourva-Witten theory ($β=1$). We show that for this potential a brane instanton is constructed only when the curvature of a brane vanishes, that is, the brane is flat. We construct an instanton with two branes and a singular instanton with a single brane. The Euclidean action of the singular instanton solution is finite if $β^2 >2/3$. We also calculate perturbations of the action around a singular instanton solution in order to show that the singular instanton is well-defined.
Associated production of $J/ψ$ plus $Z(W)$ in the improved color evaporation model using the parton Reggeization approach
Creators: name: Chernyshev, Alexey
name: Saleev, Vladimir
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the article, we study the associated production of prompt $J/ψ$ mesons and $Z(W)$ bosons in the improved color evaporation model using the high-energy factorization as it is formulated in the parton Reggeization approach. The last one is based on the modified Kimber-Martin-Ryskin-Watt model for unintegrated parton distribution functions and the effective field theory of Reggezied gluons and quarks, suggested by L.N.~Lipatov. We predict cross section for associated $J/ψ$ and $Z ( W)$ hadroproduction via the single and double parton scattering mechanisms using the set of model parameters that have been obtained early for the description of single and double prompt $J/ψ$ production at the LHC energies. The numerical calculations are realized using the Monte-Carlo event generator KaTie. The calculation results are compared with the data at the energies $\sqrt{s} = 7 \mbox{ and } 8$ TeV and we make predictions for the energy $\sqrt{s} = 13$ TeV for $J/ψ$ plus $Z(W)$ and $Υ$ plus $Z/W$ at the $\sqrt{s} = 8 \mbox{ and } 13$ TeV associated productions.
description: 20 pages, 9 figures, 2 tables. arXiv admin note: text overlap with arXiv:2211.07989
Development of a Carbon Nanotubes Based Photodetetor
Creators: name: Cilmo, Marco
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2015

description: The purpose of this PhD thesis has been the development of a new solid-state photodetector based on carbon nanotubes grown on doped silicon substrates. Carbon nanotubes films can be easily grown on large area creating large photocathode with unique and precious characteristics: low cost, high quantum efficiency, high linearity, and stable at room temperature.
It has been demonstrated that the heterojunction created between a film of carbon nanotubes and silicon generates a light sensitive detector with good quantum efficiency in the visible range. In fact, the carbon nanotubes layer absorbs photons producing electron-hole pairs that can be separated by the carbon nanotubes film and the electrical field inside the depletion zone of the heterojunction. The charge produces a photocurrent drained out by the applied voltage.
It was found that dark current measurements are well explained by assuming that the charge transport is controlled by tunneling between carbon nanostructures and silicon. Starting from this observation, a first model has been proposed. In order to simulate the devices behavior, we started with an equivalent circuit: once the parameter values are fixed we are able to reproduce the current-voltage characteristics, both in dark conditions and under illumination for different light intensities.
After the characterization and the study of the first group of photodetectors, a series of silicon substrates have been made, some with internal junctions in the order to obtain an internal amplification. The surprising result of this research has been that substrates with internal junctions and covered with carbon nanotubes do not showed mechanisms of internal charge multiplication, but simple substrates and without internal junctions have shown mechanisms of charge multiplication. This phenomenon probably is due to the presence of the film of carbon nanotubes.
Relaxation and phase space singularities in time series of human magnetoencephalograms as indicator of photosensitive epilepsy
Creators: name: Yulmetyev, R. M.
name: Hänggi, P.
name: Yulmetyeva, D. G.
name: Shimojo, S.
name: Khusaenova, E. V.
name: Watanabe, K.
name: Bhattacharya, J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: To analyze the crucial role of fluctuation and relaxation effects for the function of the human brain we studied some statistical quantifiers that support the information characteristics of neuromagnetic brain responses (magnetoencephalogram, MEG). The signals to a flickering stimulus of different color combinations have been obtained from a group of control subjects which is then contrasted with those of a patient suffering photosensitive epilepsy (PSE). We found that the existence of the specific stratification of the phase clouds and the concomitant relaxation singularities of the corresponding nonequilibrium dynamics of the chaotic behavior of the signals in separate areas in a patient provide likely indicators for the zones which are responsible for the appearance of PSE.
description: 15 pages, 10 figures, Physica A, accepted
A pulse crop dataset of agronomic traits and multispectral images from multiple environments
Creators: name: Chongyuan Zhang
name: Umani, Kingsley
name: McGee, Rebecca J.
name: Vandemark, George J.
name: Sindhuja Sankaran
Publisher: name: Zenodo
Year: 2023
Subjects: Seed yield, chickpea, pea, orthomosaic images, drone

description: The pulse dataset contains agronomic data for named cultivars and breeding lines of dry pea and chickpea, and over 275 multispectral images from advanced and preliminary breeding trials. The breeding trials were located at three locations in the “Palouse” region of Eastern Washington and Northern Idaho of the United States across 2017, 2018 and 2019 cropping seasons. The multispectral images were captured using a UAV flight integrated with a 5-band camera at multiple time points from early vegetative growth through pod development stages during each cropping season. This dataset details seed yield information from trials of dry peas and chickpea that were obtained from each location, as well as additional agronomic and phenological data recorded at one location (mostly Pullman, WA) for each cropping season. The dataset also includes 20-78 megabytes (MB) Tagged Image Format (TIF) uncalibrated stitched orthomosaic images generated from the photogrammetric software.
description: {"references": ["C. Zhang, R. J. McGee, G. J. Vandemark, S. Sankaran, Crop performance evaluation of chickpea and dry pea breeding lines across seasons and locations using Phenomics data. Frontiers in Plant Science, 12, (2021). https://doi.org/10.3389/fpls.2021.640259", "A. Marzougui, R.J McGee, S. Van Vleet and S. Sankaran, Remote sensing for field pea yield estimation: A study of multi-scale data fusion approaches in phenomics. Frontiers in Plant Science, 14, (2023). https://doi.org/10.3389/fpls.2023.1111575"]}
PP-LinkNet: Improving Semantic Segmentation of High Resolution Satellite Imagery with Multi-stage Training
Creators: name: Tran, An
name: Zonoozi, Ali
name: Varadarajan, Jagannadan
name: Kruppa, Hannes
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Road network and building footprint extraction is essential for many applications such as updating maps, traffic regulations, city planning, ride-hailing, disaster response \textit{etc}. Mapping road networks is currently both expensive and labor-intensive. Recently, improvements in image segmentation through the application of deep neural networks has shown promising results in extracting road segments from large scale, high resolution satellite imagery. However, significant challenges remain due to lack of enough labeled training data needed to build models for industry grade applications. In this paper, we propose a two-stage transfer learning technique to improve robustness of semantic segmentation for satellite images that leverages noisy pseudo ground truth masks obtained automatically (without human labor) from crowd-sourced OpenStreetMap (OSM) data. We further propose Pyramid Pooling-LinkNet (PP-LinkNet), an improved deep neural network for segmentation that uses focal loss, poly learning rate, and context module. We demonstrate the strengths of our approach through evaluations done on three popular datasets over two tasks, namely, road extraction and building foot-print detection. Specifically, we obtain 78.19\% meanIoU on SpaceNet building footprint dataset, 67.03\% and 77.11\% on the road topology metric on SpaceNet and DeepGlobe road extraction dataset, respectively.
Moat flow in the vicinity of sunspots for various penumbral configurations
Creators: name: Dominguez, S. Vargas
name: van der Voort, L. Rouppe
name: Bonet, J. A.
name: Pillet, V. Martinez
name: Van Noort, M.
name: Katsukawa, Y.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: High-resolution time series of sunspots have been obtained with the Swedish 1m Solar Telescope between 2003 and 2006 at different locations on the solar disc. Proper motions in seven different active regions have been studied. The analysis has been done by applying local correlation tracking to every series of sunspots, each of them more than 40 minutes long. The sunspots' shapes include a different variety of penumbral configurations. We report on a systematic behaviour of the large-scale outflows surrounding the sunspots, commonly known as moat flows, that are essentially present only when preceded by a penumbra not tangential but perpendicular to the sunspot border. We present one case for which this rule appears not to be confirmed. We speculate that the magnetic neutral line, which is located in the vicinity of the anomalous region, might be responsible for blocking the outflow. These new results confirm the systematic and strong relation between the moat flows and the existence of penumbrae. A comparative statistical study between moats and standard granulation is also performed.
description: 11 pages, 10 figures, 3 tables (see http://www.iac.es/galeria/svargas/vargas2008.pdf for better quality figures
Potentiality realism: A realistic and indeterministic physics based on propensities
Creators: name: Del Santo, Flavio
name: Gisin, Nicolas
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: History and Philosophy of Physics (physics.hist-ph)
subject: FOS: Physical sciences

description: We propose an interpretation of physics named potentiality realism. This view, which can be applied to classical as well as to quantum physics, regards potentialities (i.e. intrinsic, objective propensities for individual events to obtain) as elements of reality, thereby complementing the actual properties taken by physical variables. This allows one to naturally reconcile realism and fundamental indeterminism in any theoretical framework. We discuss our specific interpretation of propensities, that require them to depart from being probabilities at the formal level, though allowing for statistics and the law of large numbers. This view helps reconcile classical and quantum physics by showing that most of the conceptual problems that are customarily taken to be unique issues of the latter -- such as the measurement problem -- are actually in common to all indeterministic physical theories.
description: 8 pages. Accepted in European Journal for Philosophy of Science
Gravitational waves physics using Fermi coordinates: a new teaching perspective
Creators: name: Ruggiero, Matteo Luca
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The detection of gravitational waves is possible thanks to a multidisciplinary approach, involving different disciplines such as astrophysics, physics, engineering and quantum optics. Consequently, it is important today for teachers to introduce the basic features of gravitational waves science in the undergraduate curriculum. The usual approach to gravitational wave physics is based on the use of traceless and transverse coordinates, which do not have a direct physical meaning and, in a teaching perspective, may cause misconceptions. In this paper, using Fermi coordinates, which are simply related to observable quantities, we show that it is possible to introduce a gravitoelectromagnetic analogy that describes the action of gravitational waves on test masses in terms of electric-like and magnetic-like forces. We suggest that this approach could be more suitable when introducing the basic principles of gravitational waves physics to students.
description: 20 pages, 5 figures, Accepted for publication in the American Journal of Physics
The 2005 July Superoutburst of the Dwarf Nova 2QZ J021927.9-304545: the SU UMa Nature Confirmed
Creators: name: Imada, Akira
name: Kato, Taichi
name: Monard, L. A. G.
name: Retter, Alon
name: Liu, Alex
name: Nogami, Daisaku
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report on time-resolved photometry of the 2005 July superoutburst of the dwarf nova, 2QZ J021927.9-304545. The resultant light curves showed conspicuous superhumps with a period of 0.081113(19) days, confirming the SU UMa nature of the object. Although we missed the maximum phase of the outburst, the amplitude of the superoutburst well exceeded 5 mag. This value is slightly larger than that of typical SU UMa-type dwarf novae. The superhump period decreased as time elapsed, as can be seen in most SU UMa-type dwarf novae. Based on the archive of ASAS-3, the recurrence time of a superoutburst of the variable turned out to be about 400 days. This value is typical of well known SU UMa stars. The distance to this system was roughly estimated as 370(+20, -60) pc using an empirical relation.
description: 6 pages, 7 figures, accepted for publication in PASJ
Analysis of hidden feedback loops in continuous machine learning systems
Creators: name: Khritankov, Anton
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: In this concept paper, we discuss intricacies of specifying and verifying the quality of continuous and lifelong learning artificial intelligence systems as they interact with and influence their environment causing a so-called concept drift. We signify a problem of implicit feedback loops, demonstrate how they intervene with user behavior on an exemplary housing prices prediction system. Based on a preliminary model, we highlight conditions when such feedback loops arise and discuss possible solution approaches.
description: 7 pages, 9 figures; added more experiments, minor stylistic fixes and typos
Ecology of the toxic dinoflagellate Ostreopsis cf. ovata along the coasts of the Campania region (Tyrrhenian Sea, Mediterranean Sea)
Creators: name: Di Cioccio, Davide
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2015

description: Blooms of the toxic dinoflagellate Ostreopsis genus are a recurrent phenomenon in tropical and temperate regions worldwide. The most widely distributed species in the Mediterranean Sea, Ostreopsis cf. ovata, produces blooms with increasing intensity, frequency and distribution. These blooms have been associated with respiratory problems and skin irritations in humans, causing health problems along Italian coasts. In addition, palytoxin-like substances produced by this species can be accumulated by various organisms and make the seafood toxic, with further risks to human health.
This thesis is based on the analysis of a multiannual dataset gathered at different coastal sites along the Campania region: 1) the area of Posillipo, in the Gulf of Naples, where the most intense blooms of O. cf. ovata for the Campania Region are regularly recorded; 2) the Ischia Island coasts, which are subjected to natural acidification due to the presence of volcanic vents; 3) the sandy littoral  of the Gulf of Salerno littoral, where O. cf. ovata has not been found previously, and where structures for the defence from coastal erosion will be built.
Results showed that: i) Ostreopsis cf. ovata blooms are a stable phenomenon, occurring at regular frequency over the years in summer months along Posillipo and Ischia Island coasts; ii) the blooms show a marked seasonality, with peaks in the summer months, thus representing a risk for people during the bathing season, either through direct contact and aerosol or following the consumption of contaminated seafood; iii) based on the results from the Ischia island, a lower pH does not affect Ostreopsis blooms, meaning no risk decrease in future scenarios of ocean acidification; iv) Ostreopsis does occur in the Gulf of Salerno, although at low concentrations, probably due to the absence of a suitable substrate; by providing a hard substrate for macroalgae hosting Ostreopsis blooms, artificial structures against coastal erosion might  determine an increase of the species in an area where it has not represented a risk so far.
The present study highlights the relevance of appropriate strategies for monitoring Ostreopsis blooms. Knowledge and data obtained can be used for a better assessment and interpretation of these phenomena, thus supporting informed management actions to protect the environment, seafood resources and human health.
Enhanced low field magnetoresistance of Fe3O4 nano-sphere compact
Creators: name: Song, P. Y.
name: Wang, J. F.
name: Chen, C. P.
name: Deng, H.
name: Li, Y. D.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Unusually large low field magetoresistance (LFMR), ~ 10 %, at 300 K has been observed with the sample of mono-dispersed Fe3O4 magnetite nanospheres, ~ 200 nm, compactly cold-pressed and sintered at 800 C. A detailed analysis on the transport and magnetic measurements indicates that the electron conduction is dominated by the spin-dependent scattering or tunneling at the grain boundaries. At low temperature, 140 K and 100 K near the Verwey transition, ~ 115 K, the LFMR (below 2 kOe) does not show any sign of dependence on the transition, and does not follow the variation of magnetization to reach the saturation region either. On the other hand, at 300 K, the MR saturates fast with the magnetization below 2 kOe. This temperature dependent property in LFMR is very likely attributed to the scattering or tunneling of the conduction electron passing through the grain boundary layer with spin disordered state.
description: 15 pages with 6 figures included, To J. Appl. Phys
SM13 regola l'interazione MDM2 – P53: effetti sul cancro e sul danno vascolare
Creators: name: Del Giudice, Carmine
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2015

description: Background: p53 è un noto soppressore tumorale che agisce regolando l'apoptosi in risposta al danno cellulare, regolando diversi meccanismi all'interno della cellula, come l'arresto del ciclo cellulare e l'apoptosi mitocondriale indipendentemente dalla sua attività trascrizionale. Recentemente sono stati sintetizzati due nuovi composti (ISA27 e SM13), che bloccano l'interazione MDM2-p53 e sono in grado di indurre apoptosi in cellule tumorali p53 wild-type (wt). Inoltre è noto che p53 è attivo nelle lesioni iperplastiche vascolari, nelle quali induce l'apoptosi delle cellule muscolari lisce (VSMC). Lo scopo di questo studio è stato quello di verificare l'efficacia di questi composti in tumori generati da una forma mutata del gene p53 senza attività trascrizionale (p53mt), e se p53 possa essere un target terapeutico per il trattamento di malattie vascolari, alla base delle quali vi è una iperproliferazione delle cellule vascolari
lisce.
Metodi: in vitro è stata valutata l'efficacia dei peptidi in linee cellulari tumorali con il gene p53wt, p53 mutato (p53mt) e p53 knock out (p53ko), e nella linea cellulare
VSMC. Lo studio in vivo è stato eseguito in topi nudi Balb/c.
Risultati: Sia ISA27 che SM13 riducono la proliferazione cellulare ed inducono apoptosi in vitro in cellule p53wt e p53mt, suggerendo che il meccanismo d'azione è p53 dipendente, non avendo alcun effetto nella linea tumorale p53ko, ma è indipendente dall'attività trascrizionale di p53. In vivo, ISA27 e SM13 inducono morte cellulare in
maniera dose dipendente attraverso l'attivazione della via apoptotica mitocondriale. In partiolare SM13 è più efficace di ISA27 nel ridurre la crescita del tumore. Nelle VSMC, il trattamento con SM13 è risultato efficace nel ridurre l'interazione p53/MDM2 ed aumentare i livelli di p53. Inoltre, in queste cellule SM13 inibisce la proliferazione cellulare e la sintesi del DNA ed è in grado in vitro, di indurre apoptosi p53 – dipendente.
Conclusione: Il nostro studio propone SM13 come composto anti-tumorale da utilizzare per il trattamento di tumori p53 dipendenti, anche in assenza di attività trascrizionale p53, e dimostra l'efficacia di SM13 nel ridurre la proliferazione delle VSMC, attraverso l'attivazione di un pathway apoptotico p53-dipendente, suggerendo il suo impiego in malattie vascolari iperproliferative, quali aterosclerosi e restenosi.
A New Algorithm For Difference Image Analysis
Creators: name: Bramich, D. M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In the context of difference image analysis (DIA), we present a new method for determining the convolution kernel matching a pair of images of the same field. Unlike the standard DIA technique which involves modelling the kernel as a linear combination of basis functions, we consider the kernel as a discrete pixel array and solve for the kernel pixel values directly using linear least-squares. The removal of basis functions from the kernel model is advantageous for a number of compelling reasons. Firstly, it removes the need for the user to specify such functions, which makes for a much simpler user application and avoids the risk of an inappropriate choice. Secondly, basis functions are constructed around the origin of the kernel coordinate system, which requires that the two images are perfectly aligned for an optimal result. The pixel kernel model is sufficiently flexible to correct for image misalignments, and in the case of a simple translation between images, image resampling becomes unnecessary. Our new algorithm can be extended to spatially varying kernels by solving for individual pixel kernels in a grid of image sub-regions and interpolating the solutions to obtain the kernel at any one pixel.
description: MNRAS Letters Accepted
Explaining electron and muon $g-2$ anomalies in an Aligned 2-Higgs Doublet Model with Right-Handed Neutrinos
Creators: name: Rose, Luigi Delle
name: Khalil, Shaaban
name: Moretti, Stefano
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We explain anomalies currently present in various data samples used for the measurement of the anomalous magnetic moment of electron ($a_e$) and muon ($a_μ$) in terms of an Aligned 2-Higgs Doublet Model with right-handed neutrinos. The explanation is driven by one and two-loop topologies wherein a very light CP-odd neutral Higgs state ($A$) contributes significantly to $a_μ$ but negligibly to $a_e$, so as to revert the sign of the new physics corrections in the former case with respect to the latter, wherein the dominant contribution is due to a charged Higgs boson ($H^\pm$) and heavy neutrinos with mass at the electroweak scale. For the region of parameter space of our new physics model which explains the aforementioned anomalies we also predict an almost background-free smoking-gun signature of it, consisting of $H^\pm A$ production followed by Higgs boson decays yielding multi-$τ$ final states, which can be pursued at the Large Hadron Collider.
description: 9 pages, 4 figures
Images of Gaussian and other stochastic processes under closed, densely-defined, unbounded linear operators
Creators: name: Matsumoto, Tadashi
name: Sullivan, T. J.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Probability (math.PR)
subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 60G12, 60G15, 46G10, 47B01

description: Gaussian processes (GPs) are widely-used tools in spatial statistics and machine learning and the formulae for the mean function and covariance kernel of a GP $T u$ that is the image of another GP $u$ under a linear transformation $T$ acting on the sample paths of $u$ are well known, almost to the point of being folklore. However, these formulae are often used without rigorous attention to technical details, particularly when $T$ is an unbounded operator such as a differential operator, which is common in many modern applications. This note provides a self-contained proof of the claimed formulae for the case of a closed, densely-defined operator $T$ acting on the sample paths of a square-integrable (not necessarily Gaussian) stochastic process. Our proof technique relies upon Hille's theorem for the Bochner integral of a Banach-valued random variable.
description: 13 pages
THINK TANKS AND POLICY ADVICE IN THE UNITED STATES: GENRES, DISCOURSES, STRATEGIES
Creators: name: Narciso, Floriana
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2015

description: La tesi ha come obiettivo la riflessione sul ruolo politico di agenda making dei think tank statunitensi attraverso le relative strategie comunicative e discorsive. L'orientamento ideologico-politico, spesso dichiaratamente a sostegno di un determinato partito, induce i think tank a operare in diverso modo: i think tank di destra, esemplificati da  Heritage Foundation, più portati ad interagire direttamente con il potere legislativo del Congresso; i think tank di sinistra, esemplificati dalla Brookings Foundation, più inclini a influenzare l'opinione pubblica attraverso l'occupazione degli spazi di distribuzione e propagazione delle news. Risultano diversi, pertanto, strumenti e generi della comunicazione: diversificati e target-oriented quelli dei think tank di destra, più generali e 'di opinione' quelli di sinistra.
High temperature phase of QCD
Creators: name: Blaizot, Jean-Paul
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: I give a brief overview of our present understanding of the high temperature phase of QCD, trying to clarify some of the theoretical issues involved in the current discussions that emphasize the strongly coupled character of the quark-gluon plasma produced at RHIC.
description: To appear in the proceedings of the International Conference on Strong & Electroweak Matter, BNL, May 10-13 (2006), to be published in Nucl. Phys. A 9 pages, 3 figures - late submission to the Archive
Giant suppression of the Drude conductivity due to quantum interference in disordered two-dimensional systems
Creators: name: Minkov, G. M.
name: Germanenko, A. V.
name: Rut, O. E.
name: Sherstobitov, A. A.
name: Zvonkov, B. N.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Temperature and magnetic field dependences of the conductivity in heavily doped, strongly disordered two-dimensional quantum well structures GaAs/In$_x$Ga$_{1-x}$As/GaAs are investigated within wide conductivity and temperature ranges. Role of the interference in the electron transport is studied in the regimes when the phase breaking length $L_ϕ$ crosses over the localization length $ξ\sim l\exp{(πk_Fl/2)}$ with lowering temperature, where $k_F$ and $l$ are the Fermi quasimomentum and mean free path, respectively. It has been shown that all the experimental data can be understood within framework of simple model of the conductivity over delocalized states. This model differs from the conventional model of the weak localization developed for $k_Fl\gg 1$ and $L_ϕ\llξ$ by one point: the value of the quantum interference contribution to the conductivity is restricted not only by the phase breaking length $L_ϕ$ but by the localization length $ξ$ as well. We show that just the quantity $(τ_ϕ^\ast)^{-1}=τ_ϕ^{-1}+τ_ξ^{-1}$ rather than $τ_ϕ^{-1}$, where $τ_ϕ\propto T^{-1}$ is the dephasing time and $τ_ξ\simτ\exp(πk_F l)$, is responsible for the temperature and magnetic field dependences of the conductivity over the wide range of temperature and disorder strength down to the conductivity of order $10^{-2} e^2/h$.
description: 11 pages, 15 figures
The manufacture of Minoan metal vessels: theory and practice
Creators: name: Clarke, Christina
Publisher: name: The Australian National University
Year: 2018
Subjects: subject: DF221.C8 C54 2012
subject: Minoans
subject: Implements, utensils, etc. Greece Crete
subject: Metal-work Greece Crete
subject: Bronze age Greece Crete
subject: Crete (Greece) Antiquities

description: This study aims to establish the equipment and methods used to make hammered metal vessels in Crete during the Bronze Age. It combines archaeological research with metalsmithing practice. The most substantial studies to date have been largely typological. Some have examined the equipment and processes used, but usually without fully taking into account the metalsmithing techniques involved in vessel manufacture. An understanding of the equipment required and the manner in which it is used provides a new perspective on the Minoan craft and its practitioners. The initial stages of the study involved investigating Minoan vessel types and characteristics, and studying excavation reports on Bronze Age metallurgical sites in Crete as well as publications on the metallurgy of Minoan Crete and other Bronze Age cultures. The second stage was the detailed examination of a number of Minoan vessels in collections in Crete and the UK. The final stage was to replicate tools and equipment found at Minoan metallurgical sites and to test their viability for making Minoan metal-vessel forms. The processes involved annealing, the application of different hammering methods, riveting and polishing techniques. These reconstructed processes led to the creation of two small bowls, a hydria made from separate sections and a one-handled basin. The results of this research and the replication of equipment and techniques made it possible to reconstruct the processes used to make these vessels. Several other discoveries were made which have broader implications. Firstly, the reconstructive process revealed some of the physical aspects of the craft which would have affected the working practices of Minoan smiths and the roles of individuals within a workshop. Secondly, the study showed that simple tools found at many Minoan metallurgical sites are very effective for creating these vessels. Furthermore, the results suggest that metalsmithing may have occurred at more locations than are currently recognised as metallurgical sites. Lastly, it was discovered that both the forms and the often large sizes of Minoan vessels and, by extension, many Mycenaean vessels were determined by the types of tools that the smiths used. This has implications for how we might interpret these vessels within the broader context of the metal-vessel traditions of other contemporary cultures. -- provided by Candidate.
description: v. 1. Text -- v. 2. Figures
A twofold classification of household shopping activities. Theoretical basis and empirical results from an activity-travel behavior perspective
Creators: name: Xyntarakis, Michail
Publisher: name: The University of Texas at Austin
Year: 2004
Subjects: Activity-travel perspective
Shopping episode duration
Maslow’s theory of motivation

description: This study investigates the behavioral basis of classifying shopping activities into maintenance and non-maintenance originally proposed by Bhat et al (2003) from an activity-travel perspective. Differences between the two types of shopping related to motivation and willingness to participate in comparison shopping have been examined along with alternative classifications previously employed in the transportation literature. Descriptive analysis results based on the 2000 Bay Area Travel Survey indicate significant differences between maintenance and non-maintenance shopping in the duration of participation, mode choice of participants, and distance traveled to shop. An ordered response decision model of the daily shopping participation of households in weekdays and a hazard based duration model for shopping episode duration revealed differences in underlying patterns of participation level and duration behavior between maintenance and non-maintenance shopping
Applications of non-intrusive experimental techniques
to roughness-induced transition in hypersonic flows
Creators: name: Avallone, Francesco
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2015

description: The application of non-intrusive experimental techniques is a break-through in the comprehension of the physical mechanisms governing roughness-induced transition in hypersonic flows.
In this thesis, IR Thermography, Planar and Tomographic Particle Image Velocimetry are applied. They show a great potentiality in quantifying the most relevant flow features upstream and downstream of three-dimensional roughness elements. Particularly,  non-intrusive measurements of the two-dimensional and three-dimensional velocity flow fields are reported and discussed.
The implications of cabbage looper (Trichoplusia ni) : nuclear polyhedrosis virus coevolution for biological control
Creators: name: Milks, Maynard Lionel
Publisher: name: University of British Columbia
Year: 2009

description: Many features make nuclear polyhedrosis viruses (NPVs) an attractive alternative to chemicals as insecticides. However, perhaps the single most appealing feature of NPVs is the possibility that one application of virus could lead to long-term control of the pest. This is because following an initial inoculation, viral particles will be released in the environment at each insect generation, assuring a continuous supply of inoculum. Sustained exposure to NPVs is likely to select for resistance. However, in contrast to chemicals, this might not pose such a problem as NPVs can also evolve and become more virulent. Assessing the coevolutionary trajectory of insect-NPV association is thus critical in determining the potential of these viruses as long-term control agents. In my thesis, I examined the coevolution of cabbage loopers (Trichoplusia ni Hubner) and its associated singly-embedded nuclear polyhedrosis virus (TnSNPV). I chose T. ni because it is a generalist herbivore of great economic importance and because it has a short generation time thus making it a good candidate for studies of evolution.
Lexical elicitation: Mann 1-118
Creators: name: Hardkadee, Kraisorn
name: Ninjanbut, Thongsawat
name: Lau-Preechathammarach, Raksit Tyler
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2023
Subjects: subject: sss

description: Words from Mann's MSEA Swadesh list 1-118. Consultant is a 58-year-old male.
Improved Screen Content Coding in VVC Using Soft Context Formation
Creators: name: Och, Hannah
name: Uddehal, Shabhrish Reddy
name: Strutz, Tilo
name: Kaup, André
Publisher: name: arXiv
Year: 2023
Subjects: subject: Image and Video Processing (eess.IV)
subject: Multimedia (cs.MM)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Screen content images typically contain a mix of natural and synthetic image parts. Synthetic sections usually are comprised of uniformly colored areas and repeating colors and patterns. In the VVC standard, these properties are exploited using Intra Block Copy and Palette Mode. In this paper, we show that pixel-wise lossless coding can outperform lossy VVC coding in such areas. We propose an enhanced VVC coding approach for screen content images using the principle of soft context formation. First, the image is separated into two layers in a block-wise manner using a learning-based method with four block features. Synthetic image parts are coded losslessly using soft context formation, the rest with VVC.We modify the available soft context formation coder to incorporate information gained by the decoded VVC layer for improved coding efficiency. Using this approach, we achieve Bjontegaard-Delta-rate gains of 4.98% on the evaluated data sets compared to VVC.
description: 5 pages, 5 figures, 2 tables
The legal construction of the child in the United Nations Convention on the Rights of the Child
Creators: name: Barnes, Ashleigh Dell
Publisher: name: The Australian National University
Year: 2014

description: While the United Nations Convention on the Rights of the Child (CRC) has been extensively analysed since its inception and the category 'child' has been critiqued for even longer, it seems the critiques made about the category 'child' continue to have limited purchase regarding the CRC's construction of the category 'child'. This project was inspired by the seemingly dominant perception that there exists something fundamental to the category 'child', a view held even by those who dismiss the same perspective regarding the category 'woman' for example. Put another way, the legs upon which the CRC's category 'child' stands have been dismantled for all other human categories (capacity as a precursor for rights; the existence of 'essential' and 'natural' characteristics shared by all persons who make up an identity category). This thesis aims to understand how these 'legs' nonetheless continue to prop up the category 'child'. This thesis critiques the CRC's articulation of the category 'child', the taken for granted/self-evident assumption that children are fundamentally different from adults, and that this 'difference' justifies their differential and submissive positioning in relation to adults under the banner of children's rights. It seeks to examine the vision of the 'child' articulated in the CRC by employing a postmodern deconstructionist analysis, which draws heavily on Michel Foucault and Judith Butler. This thesis argues that the CRC's vision of the child as 'developing' and thus in need of 'care' enables the regulation and effective control of childhood. As such, the CRC does not describe or provide for the 'true' childhood. Rather, the CRC prescribes vulnerability and dependency as the markers of childhood.
On the glacial-interglacial variability of upwelling, carbon burial and denitrification on the Northwestern Mexican continental margin
Creators: name: Ganeshram, Raja S.
Publisher: name: University of British Columbia
Year: 2009

description: Glacial-interglacial variability in upwelling on the NW Mexican margin is assessed by reconstructing the history of organic carbon and biogenic opal deposition and measuring the Ba/Al ratio in three piston cores that span the upper to the lower continental slope. Rates of accumulation of organic carbon, opal and to some degree biogenic barite are higher in interglacial intervals, indicating that upwelling-induced productivity was higher during the warm periods over the last 140,000 years. Despite cyclic changes in organic carbon accumulation, matrix-corrected HI values in the mid- and lower- slope cores are invariant and are similar to values in the laminated intervals from the oxygen-minimum site. This suggests that changes in organic carbon content are controlled by productivity variations and are not due to differential preservation induced by variations in bottom water oxygen concentrations. The lowest HI values in Mexican Margin sediments occur concurrently with large increases in grain size. Thus, increased degradation resulting from winnowing is offered as the leading explanation for the hydrocarbon impoverishments in the bioturbated upper slope deposits. Late Quaternary records of denitrification in the oxygen-deficient subsurface water masses of the Eastern Tropical North Pacific (ETNP) are constructed using ¹⁵N/¹⁴N ratios measured on bulk sediments. The profiles show a synchronous decrease in denitrification during the glacial periods over the last 140 kyrs. It is suggested that, because nitrate is a limiting nutrient in the modern ocean, a consequent increase in the oceanic nitrate inventory could have contributed to the observed decrease in glacial atmospheric pCO₂ by enhancing the fertility of the ocean. The glacial decreases in denitrification in the ETNP are attributed to large reductions in upwelling-induced fluxes of organic detritus on the margin in response to glacial shifts in the wind field off NW Mexico associated with the growth of Laurentide ice on northern North America, the establishment of a resident high pressure cell over the ice sheet, and the bifurcation of the Jet Stream.
Intestinal Parasites Classification Using Deep Belief Networks
Creators: name: Roder, Mateus
name: Passos, Leandro A.
name: Ribeiro, Luiz Carlos Felix
name: Benato, Barbara Caroline
name: Falcão, Alexandre Xavier
name: Papa, João Paulo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Currently, approximately $4$ billion people are infected by intestinal parasites worldwide. Diseases caused by such infections constitute a public health problem in most tropical countries, leading to physical and mental disorders, and even death to children and immunodeficient individuals. Although subjected to high error rates, human visual inspection is still in charge of the vast majority of clinical diagnoses. In the past years, some works addressed intelligent computer-aided intestinal parasites classification, but they usually suffer from misclassification due to similarities between parasites and fecal impurities. In this paper, we introduce Deep Belief Networks to the context of automatic intestinal parasites classification. Experiments conducted over three datasets composed of eggs, larvae, and protozoa provided promising results, even considering unbalanced classes and also fecal impurities.
Spin exchange-enabled quantum simulator for large-scale non-Abelian gauge theories
Creators: name: Halimeh, Jad C.
name: Homeier, Lukas
name: Bohrdt, Annabelle
name: Grusdt, Fabian
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Lattice (hep-lat)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A central requirement for the faithful implementation of large-scale lattice gauge theories (LGTs) on quantum simulators is the protection of the underlying gauge symmetry. Recent advancements in the experimental realizations of large-scale LGTs have been impressive, albeit mostly restricted to Abelian gauge groups. Guided by this requirement for gauge protection, we propose an experimentally feasible approach to implement large-scale non-Abelian $\mathrm{SU}(N)$ and $\mathrm{U}(N)$ LGTs with dynamical matter in $d+1$D, enabled by two-body spin-exchange interactions realizing local emergent gauge-symmetry stabilizer terms. We present two concrete proposals for $2+1$D $\mathrm{SU}(2)$ and $\mathrm{U}(2)$ LGTs, including dynamical bosonic matter and induced plaquette terms, that can be readily implemented in current ultracold-molecule and next-generation ultracold-atom platforms. We provide numerical benchmarks showcasing experimentally accessible dynamics, and demonstrate the stability of the underlying non-Abelian gauge invariance. We develop a method to obtain the effective gauge-invariant model featuring the relevant magnetic plaquette and minimal gauge-matter coupling terms. Our approach paves the way towards near-term realizations of large-scale non-Abelian quantum link models in analog quantum simulators.
description: $15$ pages, $12$ figures
On the relation of closed forms and Trotter's product formula
Creators: name: Matolcsi, Mate
Publisher: name: arXiv
Year: 2006
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 47D06, 47A07

description: The aim of this paper is to give a characterization in Hilbert spaces of the generators of $C_0$-semigroups associated with closed, sectorial forms in terms of the convergence of a generalized Trotter's product formula. In the course of the proof of the main result we also present a similarity result which can be of independent interest: for any unbounded generator $A$ of a $C_0$-semigroup $e^{tA}$ it is possible to introduce an equivalent scalar product on the space, such that $e^{tA}$ becomes non-quasi-contractive with respect to the new scalar product.
description: 12 pages