cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Constructing Ethnic Minority Detectives in French and German Crime Television Series
Creators: name: , Gabriele
Publisher: name: Cinéma & Cie. Film and Media Studies Journal
Year: 2021

description: This article examines and compares the representation of ethnic minority lead investigators in the television crime series, Tatort Hamburg (ARD, 2008-2012 season), Cherif (France 2, 2013-2019), Last Panthers (Canal+, 2015), and Dogs of Berlin (Netflix, 2018). It suggests a typology of the figure of the ethnic minority detective based on representational patterns shared by the series and other literary and television narratives, which is discussed and contextualized within the ideological and commercial limitations of French and German television cultures. The last section assesses the series’ potential to depict ‘postmigrant societies’ founded on and influenced by social plurality and former and ongoing migration movements. In so doing, the study highlights role of typologies and narrative tropes in the portrayal of ethnic minorities in crime television and insists, despite the shortcomings of some series’ representational strategies, on the value of figures of identification for minority and majority audiences that attest to a shifting understanding of ‘us’ and ‘others’ in contemporary European societies.
description: Cinéma & Cie. Film and Media Studies Journal, V. 21 N. 36/37 (2021): Glocal Detectives. Cultural Diversity In European Tv Crime Dramas
Paths to Quality Television in Eastern Europe. Where Do Hungarian and Romanian HBO Series Come From?
Creators: name: , Gabriele
name: Keszeg, Anna
Publisher: name: Cinéma & Cie. Film and Media Studies Journal
Year: 2021

description: This article provides an overview of HBO television series in Hungary and Romania, highlighting their relation to film traditions in each country. While it might seem surprising that HBO helped create original series in countries without a long-standing tradition in quality television, the roots for this ‘wave’ of Eastern European shows can actually be traced in local film production tradition. For these shows, HBO has worked to make regional voices heard internationally. These two Eastern European neighbours belong to the same categories in terms of cinema and television production in that they represent small markets with potential for development under the support of Western media. Yet this article shows how cultural differences surface when comparing these two countries’ filmic traditions, authorial perspectives, international recognition of professionals, and domestic audiences. In Hungary, prestigious directors, as well as new television professionals and ‘outsiders' from other fields, play significant roles in HBO projects. Together, they develop a relatively wide range of genres that target a broad spectrum of audience demographics. In the case of Romania, there exists a certain continuity with New Romanian Cinema in the HBO series. The Romanian productions attempt to attract larger numbers among domestic viewers in addition to international audiences. The emergent quality television in both countries demonstrates a reliance on the small cinema tradition, while capitalizing on the success of certain academic directions and the success independent film enjoyed in Europe. Given the lack of cooperation in Eastern Europe across numerous cultural and creative industries following 1989, this article examines how HBO acts as a catalyst for Hungarian and Romanian creativity. By bringing together local resources and using its legitimacy as a major player in international television, HBO empowers local professionals to upgrade the quality of their televised content.
description: Cinéma & Cie. Film and Media Studies Journal, V. 21 N. 36/37 (2021): Glocal Detectives. Cultural Diversity In European Tv Crime Dramas
Turbulent pair separation due to multi scale stagnation point structure and its time asymmetry in two-dimensional turbulence
Creators: name: Faber, Tristan
name: Vassilicos, J. C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The pair separation model of Goto and Vassilicos (S Goto and J C Vassilicos, 2004, New J.Phys., 6, p.65) is revisited and placed on a sound mathematical foundation. A DNS of two dimensional homogeneous isotropic turbulence with an inverse energy cascade and a k^{-5/3} power law is used to investigate properties of pair separation in two dimensional turbulence. A special focus lies on the time asymmetry observed between forward and backward separation. Application of the present model to this data suffers from finite inertial range effects and thus, conditional averaging on scales rather than on time has been employed to obtain values for the Richardson constants and their ratio. The Richardson constants for the forward and backward case are found to be (1.066 +/- 0.020) and (0.999 +/- 0.007) respectively. The ratio of Richardson constants for the backwards and forwards case is therefore g_b/g_f = (0.92 +/- 0.03), and hence exhibits a qualitatively different behavior from pair separation in three dimensional turbulence, where g_b > g_f (J Berg et al., 2006, Phys.Rev.E, 74(1), p.016304). This indicates that previously proposed explanations for this time asymmetry based on the strain tensor eigenvalues are not sufficient to describe this phenomenon in two dimensional turbulence. We suggest an alternative qualitative explanation based on the time asymmetry related to the inverse versus forward energy cascade. In two dimensional turbulence, this asymmetry manifests itself in merging eddies due to the inverse cascade, leading to the observed ratio of Richardson constants.
description: 25 pages, 17 figures, added section 2.1.3 and minor rephrasing throughout; This version of the article has been accepted for publication by Physics of Fluids. After it is published, it will be found at http://pof.aip.org/
Away from London: Crime and Regional Film Commissions in the UK
Creators: name: , Gabriele
Publisher: name: Cinéma & Cie. Film and Media Studies Journal
Year: 2021

description: The purpose of this essay is to investigate the role played by regional film agencies in the new Millenium production of TV crime drama in the UK by looking in particular at the portfolio of Screen Yorkshire. The recent development of production hubs and the global competition for studio spaces, location, and facilities, led to increased importance of regional settings and support for the screen industries which is evident in the activities of national and regional agencies in the UK. After an overview of the location market in the UK and the production support available at the regional level, the essay will address the crime narratives set in local settings, and the role played by the film agencies, in particular Screen Yorkshire. Screen Yorkshire since its establishment in 2002 proved successful in developing the growth of screen industries in the area, thanks to its specialisation in commercial content investment and the introduction of the Yorkshire Content Fund (YCF). The essay will engage with the different supporting mechanisms available in the areas, through the analysis of the crime productions to reveal how matters of location and heritage play a role in the crime narratives.
description: Cinéma & Cie. Film and Media Studies Journal, V. 21 N. 36/37 (2021): Glocal Detectives. Cultural Diversity In European Tv Crime Dramas
Compactness of Hankel operators and analytic discs in the boundary of pseudoconvex domains
Creators: name: Cuckovic, Zeljko
name: Sahutoglu, Sonmez
Publisher: name: arXiv
Year: 2008
Subjects: subject: Complex Variables (math.CV)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 47B35, 32W05

description: Using several complex variables techniques, we investigate the interplay between the geometry of the boundary and compactness of Hankel operators. Let f be a function smooth up to the boundary on a smooth bounded pseudoconvex domain D in C^n. We show that, if D is convex or the Levi form of the boundary of D is of rank at least n-2, then compactness of the Hankel operator H_f implies that f is holomorphic "along" analytic discs in the boundary. Furthermore, when D is convex in C^2 we show that the condition on f is necessary and sufficient for compactness of H_f
description: Revised, to appear in J. Funct. Anal
Producing Peripheral Locations: Double Marginality in Italian and Danish Television Crime Narratives
Creators: name: , Gabriele
name: Re, Valentina
Publisher: name: Cinéma & Cie. Film and Media Studies Journal
Year: 2021

description: Alongside the enduring interest in capitals, location strategies in European crime series production have showcased an increased attention towards stories from and topographies of peripheral, distant and rural locations. We define and discuss this transcultural and transnational trend through the concepts of peripheral locations and double marginality, in the sense that these locations are usually distant from both production hubs and the symbolic centres of the nations, thus providing a fresh, sought-after visual identity to new crime series. Combining representational studies with a production studies perspective on Italian and Danish PSB crime dramas, including a media systemic exploration, we analyse the particular location strategies in a range of profiled series broadcasted by Rai in Italy and TV 2 in Denmark. In the end, we compare these strategies and reconfigure the notion of peripheral locations in the view of the analyses, while lifting the perspective to European level, thus showing how the tendency towards using peripheral locations in television dramas uncovers a new, European translocal sense of place and emphasize the role of TV series in forming a collective spatial imaginary of Europe.
description: Cinéma & Cie. Film and Media Studies Journal, V. 21 N. 36/37 (2021): Glocal Detectives. Cultural Diversity In European Tv Crime Dramas
Numerical models and optimisation techniques for a circular cross-flow filtration device
Creators: name: Parasyris, Antonis
Publisher: name: Loughborough University
Year: 2021
Subjects: subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: The main goal of this thesis is the hydrodynamical analysis of a membrane-based water purification system for potable use that exploits a circular cross-flow design. To that end, a description of the device is introduced and multiphysics problems involving both incompressible fluid flows and porous media flows are solved. The results from two modelling approaches are compared, one based on a coupled system formed by the Navier–Stokes equations and by Darcy’s law with ad-hoc coupling conditions, the other involving Brinkman’s equation. The computations are conducted using COMSOL, a commercial Finite Element solver, and the results are validated using experimental data. Computational modelling permits to identify and quantify flow instabilities (Dean vortices) close to the membrane’s surface, that may improve filtration performance as also evidenced by experimental work. The computation of Dean numbers indicate that the vortices become more pronounced for higher inlet pressure and enlarged aspect ratio of the free flow channel. Even if Brinkman’s model is easier to implement, the coupled Navier–Stokes–Darcy model permits to better represent the slip velocity on the interface. Both models require a large computational time so that they can become prohibitive to study several configurations of the device for optimisation purposes. For this reason, the Proper Generalized Decomposition (PGD) is introduced. It is able to obtain solutions of boundary value problems in closed form with explicit dependence on parameters that can be varied to achieve the optimal configuration of the system one wants to study. The focus shifts on the membrane domain only, where the use of the PGD to obtain a parametric solution depending both on material properties (the permeability of the membrane) and on operational ones (the inflow flux) is studied. The convergence speed of the PGD is found to deteriorate as the number of parameters increase. To overcome this, the linearity of the problem is exploited to define an improved algorithm. Finally, possible techniques to combine PGD and domain decomposition methods are explored in order to obtain a parametric solution of a multiphysics problem in a complex domain. More specifically, both the classical Multiplicative Schwarz method accelerated by PGD and the overlapping Arlequin method are considered. A variant of the latter is proposed that provides similar results to the original method but has the advantage of not requiring to compute quantities on the overlapping region. This could possibly result in a simpler implementation and reduced computational cost, especially in 3D cases. The methods presented and developed in this thesis can be used as the foundation towards the parametric optimisation of the filtration device.
Regular model of magnetized black hole with rational nonlinear electrodynamics
Creators: name: Kruglov, S. I.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: A modified Hayward metric of magnetically charged black hole space-time based on rational nonlinear electrodynamics with the Lagrangian ${\cal L} = -{\cal F}/(1+2β{\cal F})$ is considered. We introduce the fundamental length, characterizing quantum gravity effects. If the fundamental length vanishes the general relativity coupling to rational nonlinear electrodynamics is recovered. We obtain corrections to the Reissner--Nordström solution as the radius approaches infinity. The metric possesses a de Sitter core without singularities as $r\rightarrow 0$. The Hawking temperature and the heat capacity are calculated. It was shown that phase transitions occur and black holes are thermodynamically stable at some event horizon radii. We demonstrate that curvature invariants are bounded and the limiting curvature conjecture takes place.
description: 14 pages, 6 figures, accepted in IJMPA
Fast C-K-R Partitions of Sparse Graphs
Creators: name: Mendel, Manor
name: Schwob, Chaya
Publisher: name: arXiv
Year: 2008
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences
subject: F.2; E.1

description: We present fast algorithms for constructing probabilistic embeddings and approximate distance oracles in sparse graphs. The main ingredient is a fast algorithm for sampling the probabilistic partitions of Calinescu, Karloff, and Rabani in sparse graphs.
description: 15 pages, title changed, a small error in the running time was fixed. Many errors in English were eliminated
The Cold-start Problem: Minimal Users' Activity Estimation
Creators: name: Visnovsky, Juraj
name: Kassak, Ondrej
name: Kompan, Michal
name: Bielikova, Maria
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Cold-start problem, which arises upon the new users arrival, is one of the fundamental problems in today's recommender approaches. Moreover, in some domains as TV or multime-dia-items take long time to experience by users, thus users usually do not provide rich preference information. In this paper we analyze the minimal amount of ratings needs to be done by a user over a set of items, in order to solve or reduce the cold-start problem. In our analysis we applied clustering data mining technique in order to identify minimal amount of item's ratings required from recommender system's users, in order to be assigned to a correct cluster. In this context, cluster quality is being monitored and in case of reaching certain cluster quality threshold, the rec-ommender system could start to generate recommendations for given user, as in this point cold-start problem is considered as resolved. Our proposed approach is applicable to any domain in which user preferences are received based on explicit items rating. Our experiments are performed within the movie and jokes recommendation domain using the MovieLens and Jester dataset.
description: 1st Workshop on Recommender Systems for Television and online Video (RecSysTV) in conjunction with 8th ACM Conference on Recommender Systems, 2014
Analytical predictions of non-Gaussian distribution parameters for stellar plasmas
Creators: name: Scarfone, A. M.
name: Quarati, P.
name: Mezzorani, G.
name: Lissia, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Stimulated by the recent debate on the physical relevance and on the predictivity of q-Gaussian formalism, we present specific analytical expressions for the parameters characterizing non-Gaussian distributions, such as the nonextensive parameter q, expressions that we have proposed for different physical systems, an important example being plasmas in the stellar cores.
description: 8 pages, no figures, two columns AAS Latex Macros, references updated. To be published in Astrophysics and Space Science
Prospects in Constraining the Dark Energy Potential
Creators: name: Fernandez-Martinez, Enrique
name: Verde, Licia
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We generalize to non-flat geometries the formalism of Simon et al. (2005) to reconstruct the dark energy potential. This formalism makes use of quantities similar to the Horizon-flow parameters in inflation, can, in principle, be made non-parametric and is general enough to be applied outside the simple, single scalar field quintessence. Since presently available and forthcoming data do not allow a non-parametric and exact reconstruction of the potential, we consider a general parametric description in term of Chebyshev polynomials. We then consider present and future measurements of H(z), Baryon Acoustic Oscillations surveys and Supernovae type 1A surveys, and investigate their constraints on the dark energy potential. We find that, relaxing the flatness assumption increases the errors on the reconstructed dark energy evolution but does not open up significant degeneracies, provided that a modest prior on geometry is imposed. Direct measurements of H(z), such as those provided by BAO surveys, are crucially important to constrain the evolution of the dark energy potential and the dark energy equation of state, especially for non-trivial deviations from the standard LambdaCDM model.
description: 22 pages, 7 figures. 2 references corrected
On the Circulation of European TV Crime Series: A Case Study of the French Television Landscape (1957–2018)
Creators: name: , Gabriele
Publisher: name: Cinéma & Cie. Film and Media Studies Journal
Year: 2021

description: Despite the advent of over-the-top platforms, linear television still remains the dominant medium in European markets. This article provides a case study of the circulation of non-French European crime series in the French televisual landscape. It is based on a diachronic analysis of the flow of TV crime shows produced in Europe and broadcasted in France from 1957 to 2018. The data was collected from the official French TV archives as well as from experts and professional sources such as TV programme guides, databases, newspaper articles or amateur sources. All national channels were taken into account, be they state television, mainstream commercial channels or cable channels, except for OTT platforms. The analysis, based on format studies, provides three main results. First, the circulation of European TV crime series in France is rooted in an industrial process. It entails a process of indigenization performed through human mediation in order to fit into the culture and industry of the broadcasting territory. The second result tempers the ideal of European cultural diversity. Indeed, a diachronic perspective highlights the limited cultural diversity in this field, as German, British and Nordic Noir productions dominate European TV crime series. Lastly, data indicate continued issues with gender and ethnic equality in media industries, as crime narratives are still construed by a white and male-dominated creative industry.
description: Cinéma & Cie. Film and Media Studies Journal, V. 21 N. 36/37 (2021): Glocal Detectives. Cultural Diversity In European Tv Crime Dramas
Disclinations in the geometric theory of defects
Creators: name: Katanaev, M. O.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In the geometric theory of defects, media with a spin structure, for example, ferromagnet, is considered as a manifold with given Riemann--Cartan geometry. We consider the case with the Euclidean metric corresponding to the absence of elastic deformations but with nontrivial ${\mathbb S}{\mathbb O}(3)$-connection which produces nontrivial curvature and torsion tensors. We show that the 't Hooft--Polyakov monopole has physical interpretation in solid state physics describing media with continuous distribution of dislocations and disclinations. The Chern--Simons action is used for the description of single disclinations. Two examples of point disclinations are considered: spherically symmetric point "hedgehog" disclination and the point disclination for which the $n$-field has a fixed value at infinity and essential singularity at the origin. The example of linear disclinations with the Franc vector divisible by $2π$ is considered.
description: 21 pages, 6 figures
Crystal growth and superconductivity of FeSe_x
Creators: name: Zhang, S. B.
name: Sun, Y. P.
name: Zhu, X. D.
name: Zhu, X. B.
name: Wang, B. S.
name: Li, G.
name: Lei, H. C.
name: Luo, X.
name: Yang, Z. R.
name: Song, W. H.
name: Dai, J. M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Single crystals FeSe_x have been grown in evacuated sealed quartz tube using a NaCl/KCl flux. The products include two crystal structures of tetragon and hexagon. The electronic transport and magnetic properties measurements of FeSe_x single crystal exhibits a superconducting transition at about 10K.
description: 9 pages, 4 Figures
BBC’s "Sherlock" and Europeanness: A Case Study on the Circulation of a European TV Crime Series in Italy
Creators: name: Antoniazzi, Luca
name: , Gabriele
Publisher: name: Cinéma & Cie. Film and Media Studies Journal
Year: 2021

description: This paper considers BBC’s Sherlock (2010-2017) to intervene in debates on European identity and the transnational circulation of popular culture. The series, one of the most recent and successful television adaptations of Arthur Conan Doyle’s novels, is set in contemporary rather than Victorian London. It represents an example of both ‘quality’ international television and ‘prestige’ British popular culture. As noted by other writers, among the characteristics that enabled the commercial success of the series is its capacity to merge nostalgic elements deriving from the widespread imagery of the ‘original’ Sherlock Holmes with new and innovative textual components (e.g. use of digital technology, social media). The paper considers how Sherlock negotiates between tradition and innovation by bringing together past and present. It argues that such negotiations could perhaps be considered a mark of Europeanness, understood as a process of negotiating national identities. The paper then looks at the reception and circulation of Sherlock in Italy through the lens of cultural encounter theory. The series can be considered a success in terms of ratings and audience share. To some extent Sherlock has triggered both reflections on British television and self-reflections on Italian culture. Nevertheless, from the data we have collected, we observe that such reflections, however significant, remain limited.
description: Cinéma & Cie. Film and Media Studies Journal, V. 21 N. 36/37 (2021): Glocal Detectives. Cultural Diversity In European Tv Crime Dramas
Researching European Crime Narratives and the Role of Television: An Introduction
Creators: name: , Gabriele
name: Jacquelin, Alice
name: Pagello, Federico
Publisher: name: Cinéma & Cie. Film and Media Studies Journal
Year: 2021

description: Cinéma & Cie. Film and Media Studies Journal, V. 21 N. 36/37 (2021): Glocal Detectives. Cultural Diversity In European Tv Crime Dramas
Iron deficiency in blackgram (Vigna mungo L.): redox status and antioxidant activity
Creators: name: Dey, Sangita
name: Bhaben Chowardhara
name: Preetom Regon
name: Saradia Kar
name: Bedabrata Saha
name: Sanjib Kumar Panda
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Plant Biology
subject: Computational Biology

description: Plants growing in alkaline soil are prone to iron (Fe) deficiency. Under the effect of Fe deficiency, plants produce high amounts of reactive oxygen species, which are toxic to plant tissues and cellular components. Antioxidant enzymes play a crucial role in protecting plants from the deleterious effect of Fe deficiency. Blackgram is extensively grown in India preferring loamy soils with pH 6.5–7.8 leading to Fe deficiency. In the present study, antioxidant responses of two contrasting blackgram cultivars, “Sonkush SB23-5” and “Manas SB32-13”, have been studied under Fe deficiency. A significant decrease in growth and biomass was observed in stressed plants as compared to control. “Sonkush” recorded higher hydrogen peroxide and malondialdehyde contents. Maximum decline in catalase, ascorbate peroxidase, guaiacol peroxidase and polyphenol peroxidase activities was recorded for “Sonkush” in leaves and roots. An increase in superoxide dismutase content was positively correlated with ferric chelate reductase and negatively with other antioxidative enzymes under Fe deficiency. The antioxidative responses as observed for both cultivars infer that a part of their tolerance against Fe deficiency is contributed by antioxidants. However, the work also holds the potential for further studies to explore the other tolerance mechanisms included against the stress.
On the Superconformal Index of Chern-Simons theories and their KK Spectrometry
Creators: name: Kim, Hyojoong
name: Kim, Nakwoo
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the large-$N$ limit of superconformal index for two strongly interacting Chern-Simons theories in three dimensions with $\mathcal{N}=2$ supersymmetry, and compare the result against the AdS/CFT dual, namely the data of full Kaluza-Klein reduction spectra obtained using the exceptional field theory technique. The two theories of interest are mABJM and GJV theories, which are obtained as IR fixed point of RG whose UV description is ABJM and maximally supersymmetric Yang-Mills theory respectively. We confirm agreement and the duality persists. For the case of mABJM it turns out that we need a refinement of the gravity index which reflects the fact that the UV description on the field theory side has enhanced global symmetry.
description: 19 pages
title: WCET 2008 Abstracts Collection -- 8th Intl. Workshop on Worst-Case Execution Time (WCET) Analysis
Creators: name: Kirner, Raimund
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2008
Subjects: subject: Worst-case execution time
subject: real-time systems
subject: timing analysis

description: The workshop on Worst-Case Execution Time Analysis is a satellite event to
the annual Euromicro Conference on Real-Time Systems. It brings together
people that are interested in all aspects of timing analysis for real-time
systems. In the 2008 edition, 13 papers were presented, organized into four
sessions: methods for WCET computation, low-level analysis, system-level
analysis and flow-analysis. The workshop was also the opportunity to report
from the 2007 WCET tool challenge.
description: OASIcs, Vol. 8, 8th International Workshop on Worst-Case Execution Time Analysis (WCET'08), pages i-x
Quantum Connectivity of Space-Time and Gravitationally Induced Decorrelation of Entanglement
Creators: name: Ralph, T. C.
name: Milburn, G. J.
name: Downes, T.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We discuss an alternative formulation of the problem of quantum optical fields in a curved space-time using localized operators. We contrast the new formulation with the standard approach and find observable differences for entangled states. We propose an experiment in which an entangled pair of optical pulses are propagated through non-uniform gravitational fields and find that the new formulation predicts de-correlation of the optical entanglement under experimentally realistic conditions.
Anisotropic thermodynamic and transport properties of single crystalline (Ba$_{1-x}$K$_x$)Fe$_2$As$_2$ (x = 0 and 0.45)
Creators: name: Ni, N.
name: Bud'ko, S. L.
name: Kreyssig, A.
name: Nandi, S.
name: Rustan, G. E.
name: Goldman, A. I.
name: Gupta, S.
name: Corbett, J. D.
name: Kracher, A.
name: Canfield, P. C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Single crystals of BaFe$_2$As$_2$ and (Ba$_{0.55}$K$_{0.45}$)Fe$_2$As$_2$ have been grown out of excess Sn with 1% or less incorporation of solvent. The crystals are exceptionally micaceous, are easily exfoliated and can have dimensions as large as 3 x 3 x 0.2 mm$^3$. The BaFe$_2$As$_2$ single crystals manifest a structural phase transition from a high temperature tetragonal phase to a low temperature orthorhombic phase near 85 K and do not show any sign of superconductivity down to 1.8 K. This transition can be detected in the electrical resistivity, Hall resistivity, specific heat and the anisotropic magnetic susceptibility. In the (Ba$_{0.55}$K$_{0.45}$)Fe$_2$As$_2$ single crystals this transition is suppressed and instead superconductivity occurs with a transition temperature near 30 K. Whereas the superconducting transition is easily detected in resistivity and magnetization measurements, the change in specific heat near $T_c$ is small, but resolvable, giving $ΔC_p/γT_c \approx 1$. The application of a 140 kOe magnetic field suppresses $T_c$ by only $\sim 4$ K when applied along the c-axis and by $\sim 2$ K when applied perpendicular to the c-axis. The ratio of the anisotropic upper critical fields, $γ= H_{c2}^{\perp c} / H_{c2}^{\| c}$, varies between 2.5 and 3.5 for temperatures down to $\sim 2$ K below $T_c$.
Investigations of planar n+-in-n ATLAS silicon sensors with modified pixel implantations
Creators: name: Wagner, Mareike
Publisher: name: Technische Universität Dortmund
Year: 2020
Subjects: subject: Pixelsensor
subject: Detektorphysik
subject: Teilchenphysik
subject: Siliziumsensor
subject: CERN
subject: ATLAS
subject: IBL
subject: LHC
subject: 530
subject: Siliciumsensor
subject: ATLAS
subject: Elementarteilchenphysik
subject: LHC

description: In hoch energetischen Physikexperimenten werden kontinuierlich verbesserte Sensoren und Module benötigt, um neuen Anforderungen gerecht zu werden. Die REINER-Pixelmodule weisen verschiedene Pixelvariationen auf, um die Sensoreigenschaften, vor allem nach Bestrahlung, zu untersuchen. In dieser Arbeit werden die Labor- und Teststrahlergebnisse von mehreren REINER- Pixelmodulen präsentiert. Insgesamt wurden dazu neun Module mit Protonen und Neutronen in Bestrahlungseinrichtungen bestrahlt, um die Strahlenhärte und die beabsichtigte Ladungsverstärkung zu untersuchen. Vor der Bestrahlung zeigten alle Pixelvariationen ähnliche Effizienzen in der Ladungssammlung und des Teilchennachweises, was sich jedoch nach der Bestrahlung änderte. Für fast alle Module wurden nach der Bestrahlung die höchsten Teilchennachweiseffizienzen bei niedrigen Spannungen für das Standardpixeldesign gemessen. Nur bei einem mit Neutronen hoch bestrahlten Modul (5x1015neq/cm²) erreicht die Pixelvariation V5 deutlich höhere Nachweiseffizienzen bei niedrigen Spannungen. Die anschließenden Studien, bei denen ein anderes Modul erhitzt wurde, haben gezeigt, dass die höhere Anzahl an Ladungsträgern und die erhöhte Teilchennachweiseffizienz von Pixelvariation V5 ein Aufheizeffekt sind: Für dieses mit Neutronen hoch bestrahlte Modul wurden nach langen Aufheizzeiten eine erhöhte Ladungssammlung und eine höhere Teilchennachweis-effizienz gemessen. Zusätzlich wurde im Zuge dieser Arbeit ein Aufbau in Betrieb genommen, mit dem die laserinduzierte Ladungssammlungseffizienz eines Sensors mit einer Auflösung im Subpixelbereich im Labor untersucht werden kann. Erste vielversprechende Ergebnisse dieses Aufbaus sind konsistent zu Pixeleffizienzen aus Teststrahlmessungen: Die erhöhte Ladungssammlung- und Teilchennachweiseffizienz von Pixelvariation V5 nach Bestrahlung und Aufheizen ist vermutlich auf elektrische Feldstärkenmaxima zurückzuführen, die an den Ecken und Kanten der n⁺-Implantation auftreten. Dieses stärkere elektrische Feld verbreitert die Verarmungszone und ein Ladungsvervielfältigungseffekt tritt auf.
The Partition Function of a Wilson Loop in a Strongly Coupled $\mathcal N=4$ Supersymmetric Yang-Mills Plasma with Fluctuations
Creators: name: Hou, De-fu
name: Liu, James T.
name: Ren, Hai-cang
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We examine the one-loop partition function describing the fluctuations of the superstring in a Schwarzschild-AdS$_5\times S^5$ background. On the bosonic side, we demonstrate the one-loop equivalence of the Nambu-Goto action and the Polyakov action for a general worldsheet, while on the fermionic side, we consider the reduction of the ten-dimensional Green-Schwarz fermion action to a two-dimensional worldsheet action. We derive the partition functions of the worldsheets corresponding to both straight and parallel Wilson lines. We show that the UV divergences of the functional determinants in the thermal AdS background are canceled.
description: Typos fixed, in Revtex 32 pages, version to appear in Phys. Rev. D
Fluctuation relations in simple examples of non-equilibrium steady states
Creators: name: Chetrite, Raphael
name: Falkovich, Gregory
name: Gawedzki, Krzysztof
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We discuss fluctuation relations in simple cases of non-equilibrium Langevin dynamics. In particular, we show that close to non-equilibrium steady states with non-vanishing probability currents some of these relations reduce to a modified version of the fluctuation-dissipation theorem. The latter may be interpreted as the equilibrium-like relation in the reference frame moving with the mean local velocity determined by the probability current.
description: 18 pages
Recent Advances in Conservation-Dissipation Formalism for Irreversible Processes
Creators: name: Peng, Liangrong
name: Hong, Liu
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The main purpose of this review is to summarize the recent advances of the Conservation-Dissipation Formalism (CDF), a new way for constructing both thermodynamically compatible and mathematically stable and well-posed models for irreversible processes. The contents include but are not restricted to the CDF's physical motivations, mathematical foundations, formulations of several classical models in mathematical physics from master equations and Fokker-Planck equations to Boltzmann equations and quasi-linear Maxwell equations, as well as novel applications in the fields of non-Fourier heat conduction, non-Newtonian viscoelastic fluids, wave propagation/transportation in geophysics and neural science, soft matter physics, \textit{etc.} Connections with other popular theories in the field of non-equilibrium thermodynamics are examined too.
description: 38 pages, 2 figures
Field-Direction Sensitive Skyrmion Crystals in Cubic Chiral Systems: Implication to $4f$-Electron Compound EuPtSi
Creators: name: Hayami, Satoru
name: Yambe, Ryota
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We theoretically study the stability of magnetic skyrmion crystals (SkXs) in chiral cubic antiferromagnets with the EuPtSi hosting unconventional nanometric SkXs in mind. By performing numerical simulations for a minimal effective spin model with the long-range Dzyaloshinskii-Moriya interaction and the multiple-spin interaction arising from itinerant nature of electrons, we clarify two key ingredients for the emergence of the SkXs in EuPtSi: One is the low-symmetric ordering vectors that lead to the field-direction sensitive SkXs in an external magnetic field, while the other is the synergy between spin-charge and spin-orbit couplings in itinerant magnets that results in the nanometric SkXs. The present study will not only provide the microscopic mechanism of the SkXs in EuPtSi but also guide for a search of further materials hosting short-period SkXs.
description: 5 pages, 5 figures
Appendix: Mesoproterozoic 40Ar–39Ar ages of some lamproites from the Cuddapah Basin and Eastern Dharwar Craton, southern India: implications for diamond provenance of the Banganapalle Conglomerates, age of the Kurnool Group and Columbia tectonics
Creators: name: Kumar, Alok
name: Debojit Talukdar
name: N.V. Chalapathi Rao
name: R. Burgess
name: B. Lehmann
Publisher: name: Geological Society of London
Year: 2021
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences

description: Appendix
Model of Ramp Compression of Diamond from Ab Initio Simulations
Creators: name: González-Cataldo, F.
name: Godwal, B. K.
name: Driver, Kevin
name: Jeanloz, Raymond
name: Militzer, Burkhard
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Ramp compression experiments characterize high-pressure states of matter at temperatures well below those present in shock compression. However, because temperature is typically not directly measured during ramp compression, it is uncertain how much heating occurs under these shock-free conditions. Here, we performed a series of ab initio simulations on carbon in order to match the density-stress measurements of Smith et al. [Smith, et al., Nature 511, 330 (2014)]. We considered isotropically as well as uniaxially compressed solid carbon in the diamond and BC8 phases, with and without defects, as well as liquid carbon. Our idealized model ascribes heating during ramp compression to an initially uniaxially compressed cell transforming isochorically into an isotropically (hydrostatic equivalent) compressed state having lower internal energy, hence higher temperature so as to conserve energy. Multiple such heating events can occur during a single ramp experiment, leading to higher temperatures than with isentropic compression. Comparison with experiments shows that heating alone does not explain the equation of state measurements on diamond, instead implying that a significant uniaxial stress component remains present at high compression. The temperature predictions of our ramp compression model remain to be verified with future laboratory measurements.
description: 13 pages, 13 figures, https://link.aps.org/doi/10.1103/PhysRevB.104.134104
Faraday Rotation Limits on a Primordial Magnetic Field from WMAP Five-Year Data
Creators: name: Kahniashvili, Tina
name: Maravin, Yurii
name: Kosowsky, Arthur
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A primordial magnetic field in the early universe will cause Faraday rotation of the linear polarization of the cosmic microwave background generated via Compton scattering at the surface of last scattering. This rotation induces a non-zero parity-odd (B-mode) polarization component. The Wilkinson Microwave Anisotropy Probe (WMAP) 5-year data puts an upper limit on the magnitude of the B-polarization power spectrum; assuming that the B-polarization signal is totally due to the Faraday rotation effect, the upper limits on the comoving amplitude of a primordial stochastic magnetic field range from $6 \times 10^{-8}$ to $2 \times 10^{-6}$ G on a comoving length scale of 1 Mpc, depending on the power spectrum of the magnetic field.
description: 5 pages, 3 figures; matches PRD version
Emergent Collective Modes and Kinks in Electronic Dispersions
Creators: name: Raas, Carsten
name: Grete, Patrick
name: Uhrig, Götz S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Recently, it was shown that strongly correlated metallic fermionic systems [Nature Phys. 3, 168 (2007)] generically display kinks in the dispersion of single fermions without the coupling to collective modes. Here we provide compelling evidence that the physical origin of these kinks are emerging internal collective modes of the fermionic systems. In the Hubbard model under study these modes are identified to be spin fluctuations which are the precursors of the spin excitations in the insulating phase. In spite of their damping the emergent modes give rise to signatures very similar to features of models including coupling to external modes.
description: 4 pages, 4 figures
ID4DEVELOPMENT IN THE DIGITAL AGE
Creators: name: Mahadallah, Hassan Omar
Publisher: name: SORER
Year: 2021
Subjects: ID4Development
Digital
Age
Somalia
SomNOG5
SomNOG

description: Dr. Hassan Omar Mahadallah, Rector of Somali National University delivered this keynote presentation at the 5th Annual event of the Somali Network Operators' Group (SomNOG).
Self-consistent state and measurement tomography with fewer measurements
Creators: name: Stephens, A.
name: Cutshall, J. M.
name: McPhee, T.
name: Beck, M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We describe a technique for self consistently characterizing both the quantum state of a single qubit system, and the positive-operator-valued measure (POVM) that describes measurements on the system. The method works with only ten measurements. We assume that a series of unitary transformations performed on the quantum state are fully known, while making minimal assumptions about both the density operator of the state and the POVM. The technique returns maximum-likely estimates of both the density operator and the POVM. To experimentally demonstrate the method, we perform reconstructions of over 300 state-measurement pairs and compare them to their expected density operators and POVMs. We find that 95% of the reconstructed POVMs have fidelities of 0.98 or greater, and 92% of the density operators have fidelities that are 0.98 or greater.
description: 14 pages, 9 figures
Mock Jacobi forms in basic hypergeometric series
Creators: name: Kang, Soon-Yi
Publisher: name: arXiv
Year: 2008
Subjects: subject: Number Theory (math.NT)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 11F37; 11F50; 05A17; 33D15

description: We show that some $q$-series such as universal mock theta functions are linear sums of theta quotients and mock Jacobi forms of weight 1/2, which become holomorphic parts of real analytic modular forms when they are restricted to torsion points and multiplied by suitable powers of $q$. And we prove that certain linear sums of $q$-series are weakly holomorphic modular forms of weight 1/2 due to annihilation of mock Jacobi forms or completion by mock Jacobi forms. As an application, we obtain a relation between the rank and crank of a partition.
description: 13 pages
Security Smells Pervade Mobile App Servers
Creators: name: Gadient, Pascal
name: Tarnutzer, Marc-Andrea
name: Nierstrasz, Oscar
name: Ghafari, Mohammad
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: [Background] Web communication is universal in cyberspace, and security risks in this domain are devastating. [Aims] We analyzed the prevalence of six security smells in mobile app servers, and we investigated the consequence of these smells from a security perspective. [Method] We used an existing dataset that includes 9714 distinct URLs used in 3376 Android mobile apps. We exercised these URLs twice within 14 months and investigated the HTTP headers and bodies. [Results] We found that more than 69% of tested apps suffer from three kinds of security smells, and that unprotected communication and misconfigurations are very common in servers. Moreover, source-code and version leaks, or the lack of update policies expose app servers to security risks. [Conclusions] Poor app server maintenance greatly hampers security.
description: ACM / IEEE International Symposium on Empirical Software Engineering and Measurement (ESEM 2021)
On the dynamics of maximum extractable entanglement for open systems
Creators: name: Isasi, E.
name: Mundarain, D.
name: Stephany, J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this work we study the dynamics of the maximum extractable entanglement for a system composed of two qubits interacting either with two independent thermal baths, a common thermal bath or a common squeezed bath. The states with maximum entanglement are found applying filtering operations which transform each state to a state in Bell diagonal form. We observe a revival of the maximum extractable entanglement for common baths. It is also shown that for some particular states in two independent baths at zero temperature, one can partially recover the initial entanglement at any time.
description: 16 pages, 7 figures
Equality of multiplicity free skew characters
Creators: name: Gutschwager, Christian
Publisher: name: arXiv
Year: 2008
Subjects: subject: Combinatorics (math.CO)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 05E05,05E10,14M15,20C30

description: In this paper we show that two skew diagrams lambda/mu and alpha/beta can represent the same multiplicity free skew character [lambda/mu]=[alpha/beta] only in the the trivial cases when lambda/mu and alpha/beta are the same up to translation or rotation or if lambda=alpha is a staircase partition lambda=(l,l-1,...,2,1) and lambda/mu and alpha/beta are conjugate of each other.
description: 16 pages, changes from v1 to v2: corrected the proof of Theorem 3.5 and some typos, changes from v2 to v3: minor layout change, enumeration changed, to appear in J. Algebraic Combin