cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
FORAMINIFERAL CHARACTERISATION OF MID-UPPER JURASSIC SEQUENCES IN THE WESSEX BASIN (UNITED KINGDOM)
Creators: name: J. OXFORD, MELISSA
name: B. HART, MALCOLM
name: P. WATKINSON, MATTHEW
Publisher: name: Università degli Studi di Milano
Year: 2004

description: The use of foraminifera in the characterisation of sequences (systems tracts, maximum flooding surfaces, etc.) has developed over the last decade. Much of this work has been based in the Cenozoic successions of the Gulf of Mexico, although there is a growing application of such data in the Middle East and the North Sea Basin. The easiest surface to characterise has been the maximum flooding surface with its high diversity and high(er) abundance faunas; the characterisation of individual systems tracts has been less successful.
Using the well-known mid-Upper Jurassic successions of the Dorset coastal sections, we have investigated a number of high resolution (para)sequences for their foraminiferal content. Using data of foraminiferal diversity and standing crops from a range of modern substrates we have investigated the potential faunas available after deposition, taphonomy, compaction, groundwater dissolution and modern weathering. By understanding the processes involved we have identified the key foraminiferal features of typical mid-Upper Jurassic sequences and indicated how this work may help in the correlation of successions in North Dorset and Normandy.
description: Rivista italiana di Paleontologia e Stratigrafia, Vol 110, No 1
Soft singularity and the fundamental length
Creators: name: Dzhunushaliev, Vladimir
name: Myrzakulov, Ratbay
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: It is shown that some regular solutions in 5D Kaluza-Klein gravity may have interesting properties if one from the parameters is in the Planck region. In this case the Kretschman metric invariant runs up to a maximal reachable value in nature, i.e. practically the metric becomes singular. This observation allows us to suppose that in this situation the problems with such soft singularity will be much easier resolved in the future quantum gravity then by the situation with the ordinary hard singularity (Reissner-Nordström singularity, for example). It is supposed that the analogous consideration can be applied for the avoiding the hard singularities connected with the gauge charges.
description: 5 pages
Gaussian Operations and Privacy
Creators: name: Navascues, Miguel
name: Acin, Antonio
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider the possibilities offered by Gaussian states and operations for two honest parties, Alice and Bob, to obtain privacy against a third eavesdropping party, Eve. We first extend the security analysis of the protocol proposed in M. Navascues et al., Phys. Rev. Lett. 94, 010502 (2005). Then, we prove that a generalized version of this protocol does not allow to distill a secret key out of bound entangled Gaussian states.
Transcription of a story about an encounter with a shopkeeper
Creators: name: Parker, Verdena
name: Spence, Justin
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: hup

description: Audio files VP-190919-02 and VP-190919-03: Transcription of a story about an encounter with a laconic shopkeeper on a trip to Warm Springs, file VP-070216-04, from the beginning of the story at 10:44 to 13:33 (VP-190919-02) and from 13:25 to the end of the file (VP-190919-03). File VP-190919-03 has backround noise from auto body work next door.
Projective measurement in nuclear magnetic resonance
Creators: name: Lee, Jae-Seung
name: Khitrin, A. K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: It is demonstrated that nuclear magnetic resonance experiments using pseudopure spin states can give possible outcomes of projective quantum measurement and probabilities of such outcomes. The physical system is a cluster of six dipolar-coupled nuclear spins of benzene in a liquid-crystalline matrix. For this system with the maximum total spin S=3, the results of measuring $S_X$ are presented for the cases when the state of the system is one of the eigenstates of $S_Z$.
description: 9 pages incluing 3 figures
PDE-constrained control using FEMLAB - Control of the Navier-Stokes equations
Creators: name: Slawig, Thomas
Publisher: name: Technische Universität Berlin
Year: 2005
Subjects: subject: 510 Mathematik
subject: optimal control
subject: finite element method
subject: Navier-Stokes equations
subject: Comsol Multiphysics
subject: PDE-constrained control

description: We show how the software FEMLAB can be used to solve PDE-constrained optimal control problems. We give a general formulation for such kind of problems and derive the adjoint equation and optimality system. Then these preliminaries are specified for the stationary Navier-Stokes equations with distributed and boundary control. The main steps to define and solve a PDE with FEMLAB are described. We describe how the adjoint system can be implemented, and how the optimality system can be used by FEMLAB's built-in functions. Special crucial topics concerning efficiency are discussed. Examples with distributed and boundary control for different type of cost functionals in 2 and 3 space dimensions are presented.
Effect of Fluctuations on the Freezing of a Colloidal Suspension in an External Periodic Potential
Creators: name: Chakrabarti, J.
name: Sinha, Supurna
Publisher: name: arXiv
Year: 2005
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We incorporate the effects of fluctuations in a density functional analysis of the freezing of a colloidal liquid in the presence of an external potential generated by interfering laser beams. A mean field treatment, using a density functional theory, predicts that with the increase in the strength of the modulating potential, the freezing transition changes from a first order to a continuous one via a tricritical point for a suitable choice of the modulating wavevectors. We demonstrate here that the continuous nature of the freezing transition at large values of the external potential $V_{e}$ survives the presence of fluctuations. We also show that fluctuations tend to stabilize the liquid phase in the large $V_{e}$ regime.
description: published
On operator representations of locally definitizable functions
Creators: name: Jonas, Peter
Publisher: name: Technische Universität Berlin
Year: 2005
Subjects: subject: 510 Mathematik
subject: definitizable operator functions
subject: generalized Nevanlinna functions
subject: selfadjoint and unitary operators in Krein spaces
subject: locally definitizable operators
subject: spectral points of positive and negative type

description: Let $\Omega$ be some domain in $\overline{{\bf C}}$ symmetric with respect to the real axis and such that $\Omega \cap \overline{{\bf R}} \neq \emptyset$ and the intersections of $\Omega$ with the upper and lower open half-planes are simply connected. We study the class of piecewise meromorphic ${\bf R}$-symmetric operator functions $G$ in $\Omega \setminus \overline{{\bf R}}$ such that for any subdomain $\Omega'$ of $\Omega$ with $\overline{\Omega'} \subset \Omega$, $G$ restricted to $\Omega'$ can be written as a sum of a definitizable and a (in $\Omega'$) holomorphic operator function. As in the case of a definitizable operator function, for such a function $G$ we define intervals $\Delta \subset {\bf R} \cap \Omega$ of positive and negative type as well as some ``local'' inner products associated with intervals $\Delta \subset {\bf R} \cap \Omega$. Representations of $G$ with the help of linear operators and relations are studied, and it is proved that there is a representing locally definitizable selfadjoint relation $A$ in a Krein space which locally exactly reflects the sign properties of $G$: The ranks of positivity and negativity of the spectral subspaces of $A$ coincide with the numbers of positive and negative squares of the "local'' inner products corresponding to $G$.
FOSSILIZATION OF AMMONITES AND SEDIMENTARY EVENTS IN DEEP ENVIRONMENTS OF CARBONATE PLATFORM (HIGHEST MIDDLE TO LOWEST UPPER OXFORDIAN, IBERIAN RANGE, SPAIN)
Creators: name: R. FERNÁNDEZ-LÓPEZ, SIXTO
name: MELÉNDEZ, GUILLERMO
Publisher: name: Università degli Studi di Milano
Year: 2004

description: In the Ricla area (Zaragoza, Aragonese Branch of the Iberian Range), at the top of the Yátova Formation, grey-reddish wackestone limestones grade into yellow-green siliciclastic limestones of the Aldealpozo Formation. These changes of facies between the two successive formations are associated with syndepositional palaeoreliefs developed during the Late Oxfordian. The uppermost deposits of the Yátova Formation represent an Oxfordian condensed section, from the upper Bifurcatus Zone (Middle Oxfordian) and Hypselum Zone (Upper Oxfordian). These deposits are interpreted as developed in an open marine, moderately deep carbonate platform, showing uniform low-energy conditions with extremely reduced carbonate and terrigenous background sedimentation, and very low sedimentation rates. The low diversity of the benthic fauna, scarce development of sponge bioherms and ammonite populations inhabiting the platform are palaeobiological criteria which corroborate these palaeoenvironmental conditions. Ammonite assemblages are composed of Sub-Mediterranean taxa. Over 900 ammonite specimens have been collected from the upper Bifurcatus and Hypselum zones. Oppeliidae (45,2%) and Perisphinctidae (37,9 %) are dominant. Aspidoceratidae (14,3%) are common. Haploceratidae (2,2%) are scarce. Two phylloceratids and a lytoceratid have been found. Ammonoids are commonly preserved as concretionary calcareous internal moulds of reelaborated elements. Resedimented shells are scarce. The degree of packing of ammonite remains and the stratigraphical persistence display high values. Taphonomic features indicative of sedimentary starving in deep carbonate platform environments are: 1) high concentrations of reelaborated ammonites, 2) taphonic population of type two, 3) phragmocones completely filled with sediment, and 4) homogeneous concretionary internal moulds, bearing no signs of abrasion, bioerosion or dense encrusting by organisms (such as serpulids, bryozoans or oysters). In conclusion, the occurrence of these ammonite associations confirms the development of an advanced deepening phase, within a 3rd order deepening/shallowing cycle, in the Aragonese platform, during the late Bifurcatus to Hypselum zones.
description: Rivista italiana di Paleontologia e Stratigrafia, Vol 110, No 1
Surface segregation in multicomponent high entropy alloys: Atomistic simulations versus a multilayer analytical model
Creators: name: Chatain, Dominique
name: Wynblatt, Paul
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: This paper compares two approaches for investigating the near-surface composition profile that results from surface segregation in the so-called Cantor alloy, an equi-molar alloy of CoCrFeMnNi. One approach consists of atomistic computer simulations by a combination of Monte Carlo, molecular dynamics and molecular statics techniques, and the other is a nearest neighbor analytical calculation performed in the regular solution approximation with a multilayer model, developed here for the first time for a N-component system and tested for the 5-component Cantor alloy. This type of comparison is useful because a typical computer simulation requires the use of ~100 parallel processors for 2 to 3 hours, whereas a similar calculation by means of the analytical model can be performed in a few seconds on a laptop machine. The results obtained show qualitatively good agreement between the two approaches. Thus, while the results of the computer simulations are presumably more reliable, and provide an atomic scale picture, if massive computations are required, for example, in order to optimize the composition of a multicomponent alloy, then an initial screening of the composition space by the analytical model could provide a highly useful means of narrowing the regions of interest, in the same way that the CALPHAD method allows rapid investigation of phase diagrams in complex multinary systems.
BIO-SEDIMENTARY SIGNATURES OF HIGH-FREQUENCY SALINITY/SUBAERIAL EXPOSURE CHANGES: EXAMPLES FROM THE OXFORDIAN OF PORTUGAL (CABAÇOS FORMATION)
Creators: name: C. AZERÊDO, ANA
name: CABRAL, MARIA-CRISTINA
Publisher: name: Università degli Studi di Milano
Year: 2004

description: The detailed sedimentary and micropalaeontological analysis of a complex association of continental to marginal-marine deposits from the Oxfordian of Portugal (Cabaços Formation) has allowed the recognition of high-frequency, subtle changes in the environmental conditions. The main factors controlling the palaeobiological responses to such minor-scale fluctuations were also identified. Two factors have shown to be especially significant: subaerial exposure duration and frequency (estimated by assigning type of features to the exposure index) and salinity trends, as suggested by the sedimentary and fossil records. In the west of the basin, salinity fluctuations were much stronger and more frequent (fresh- brackish-restricted marine-hypersaline), and subaerial exposure more marked for longer periods, than in the east of the basin. The microfossil assemblages, as a whole, but in particular the ostracod faunas, show differences in abundance, diversity, dominant species, degree of intrageneric and intraspecific variations, both along the successions and between west and east. The western populations seem to have been much less stable, which suggests that high-frequency changes in salinity (more than its absolute values) and degree of exposure were the most important controls on the palaeobiota.
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description: Rivista italiana di Paleontologia e Stratigrafia, Vol 110, No 1
Spin-transfer mechanism of ferromagnetism in polymerized fullerenes: $Ab initio$ calculations
Creators: name: Kvyatkovskii, O. E.
name: Zakharova, I. B.
name: Shelankov, A. L.
name: Makarova, T. L.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A mechanism of the high temperature ferromagnetism in polymerized fullerenes is suggested. It is assumed that some of the C$_{60}$ molecules in the crystal become magnetically active due to spin and charge transfer from the paramagnetic impurities (atoms or groups), such as hydrogen, fluorine, hydroxyl group OH, amino group NH$_2$, or methyl group CH$_3$, dispersed in the fullerene matrix. The exchange interaction between the spins localized on the magnetically active fullerenes is evaluated using \textit{ab initio} calculations. The nearest neighbour and next nearest neighbour exchange interaction is found to be in the range $0.1÷0.3 $ eV, that is, high enough to account for the room temperature ferromagnetism.
description: typos corrected, 8 pages, 3 figures, LaTeX
TAPHONOMY OF AMMONITE ASSEMBLAGES FROM THE MIDDLE-UPPER OXFORDIAN (TRANSVERSARIUM? - BIFURCATUS ZONES) IN THE INTERNAL PREBETIC (BETIC CORDILLERA, SOUTHERN SPAIN): TAPHONIC POPULATIONS AND TAPHOFACIES TO SUPPORT ECOSTRATIGRAPHIC INTERPRETATIONS
Creators: name: OLORIZ, FEDERICO
name: REOLID, MATIAS
name: J. RODRIGUEZ-TOVAR, FRANCISCO
Publisher: name: Università degli Studi di Milano
Year: 2004

description: The taphonomic analysis conducted on ammonoid assemblages has proven useful for palaeobiological and palaeoenvironmental reconstructions in upper Middle-to-lower Upper Oxfordian epicontinental deposits of the Internal Prebetic (southern Spain). Taphonic populations close to type I indicate the proximity, even coincidence, of life areas for neritic ammonites (i.e. parautochthonous assemblages). The relationships among preservation mode, shell size, within-bed position, corrasion, fragmentation, and epibionts (encrustment included), with lumpy-oncolitic and condensed & bioclasts-rich lumpy-oncolitic limestones allows us to typify two taphofacies. Taphofacies I shows higher values of mean shell size, corrasion, epibionts and encrustments, as well as a high number of specimens in quasi-horizontal settlement. The opposite characteristics serve to identify Taphofacies II. Taphonomic features, taphofacies and lithofacies combine in coherence with progressing third-order transgressive-to-highstand system-tract conditions and the resulting ecostratigraphic trends, which are registered by fluctuations in ammonite assemblages.
description: Rivista italiana di Paleontologia e Stratigrafia, Vol 110, No 1
Review of Structures in the Energy Dependence of Hadronic Observables
Creators: name: Blume, C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The energy dependence of various hadronic observables is reviewed. The study of their evolution from AGS over SPS to the highest RHIC energy reveals interesting features, which might locate a possible onset of deconfinement. These observables include transverse spectra of different particle types and their total multiplicities, as well as elliptic flow. In this context especially the observation of a maximum of the strangeness to pion ratio is of particular interest, since on one hand it has been predicted as a signal for the onset of deconfinement but on the other hand also statistical model calculations exhibit qualitatively similar structures. The sharpness of these features is however not reproduced by hadronic scenarios. The significance of these structures will be discussed in this contribution. Other observables, such as radius parameters from Bose-Einstein correlations, on the other hand do not exhibit any structure in their energy dependence.
description: Talk at the International Workshop "The Critical Point and the Onset of Deconfinement", July 3-5 2006, Florence Italy
GMRES convergence and the polynomial numerical hull for a Jordan block
Creators: name: Tichy, Petr
name: Liesen, Jörg
Publisher: name: Technische Universität Berlin
Year: 2006
Subjects: subject: 510 Mathematik
subject: Krylov subspace methods
subject: GMRES convergence
subject: polynomial numerical hull
subject: Jordan block

description: Consider a system of linear algebraic equations with a nonsingular $n$ by $n$ matrix~$A$. When solving this system with GMRES, the relative residual norm at the step $k$ is bounded from above by the so called ideal GMRES approximation. This bound is sharp (it is attainable by the relative GMRES residual norm) in case of a normal matrix $A$, but it need not characterize the worst-case GMRES behavior if $A$ is nonnormal. In this paper we consider an $n$ by $n$ Jordan block $J$, and study the relation between ideal and worst-case GMRES as well as the problem of estimating the ideal GMRES approximations. Under some assumptions, we show that ideal and worst-case GMRES are identical at steps $k$ and $n-k$ such that $k$ divides $n$, and we derive explicit expressions for the $(n-k)$th ideal GMRES approximation. Furthermore, we extend previous results in the literature by proving new results about the radii of the polynomial numerical hulls of Jordan blocks. Using these, we discuss the tightness of the lower bound on the ideal GMRES approximation that is derived from the radius of the polynomial numerical hull of $J$.
Entropic signatures of the skyrmion lattice phase in MnSi1-xAlx and Fe1-yCoySi
Creators: name: Dhital, C.
name: DiTusa, J. F.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The entropic signatures of magnetic phase transitions in the skyrmion lattice host compounds MnSi0.962Al0.038 and Fe0.7Co0.3Si were investigated through low field magnetization and ac susceptibility measurements. These data indicate that the conical to skyrmion transition that occurs with the application of magnetic field in MnSi0.962Al0.038 is characterized by clear discontinuity in the magnetic entropy as expected for first order topological phase transition. These same magnetoentropic features are negligibly small in isostructural Fe0.7Co0.3Si due to the level of chemical substitution related disorder and differences in the spin dynamics (range and timescales). Despite the obvious similarities in the magnetic structures of these two compounds, the transitions between these phases is substantially different indicating a surprising non-universality to the magnetic phase transitions in this class of materials.
description: 8 figures, To be published in PRB
Transferable Interactiveness Knowledge for Human-Object Interaction Detection
Creators: name: Li, Yong-Lu
name: Liu, Xinpeng
name: Wu, Xiaoqian
name: Huang, Xijie
name: Xu, Liang
name: Lu, Cewu
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Human-Object Interaction (HOI) detection is an important problem to understand how humans interact with objects. In this paper, we explore interactiveness knowledge which indicates whether a human and an object interact with each other or not. We found that interactiveness knowledge can be learned across HOI datasets and bridge the gap between diverse HOI category settings. Our core idea is to exploit an interactiveness network to learn the general interactiveness knowledge from multiple HOI datasets and perform Non-Interaction Suppression (NIS) before HOI classification in inference. On account of the generalization ability of interactiveness, interactiveness network is a transferable knowledge learner and can be cooperated with any HOI detection models to achieve desirable results. We utilize the human instance and body part features together to learn the interactiveness in hierarchical paradigm, i.e., instance-level and body part-level interactivenesses. Thereafter, a consistency task is proposed to guide the learning and extract deeper interactive visual clues. We extensively evaluate the proposed method on HICO-DET, V-COCO, and a newly constructed PaStaNet-HOI dataset. With the learned interactiveness, our method outperforms state-of-the-art HOI detection methods, verifying its efficacy and flexibility. Code is available at https://github.com/DirtyHarryLYL/Transferable-Interactiveness-Network.
description: TPAMI version of our CVPR2019 paper with a new benchmark PaStaNet-HOI. Code: https://github.com/DirtyHarryLYL/Transferable-Interactiveness-Network. arXiv admin note: substantial text overlap with arXiv:1811.08264
XMM-Newton Spectroscopy of the Starburst Dominated Ultra Luminous Infrared Galaxy NGC 6240
Creators: name: Netzer, Hagai
name: Lemze, Doron
name: Kaspi, Shai
name: George, I. M.
name: Turner, T. J.
name: Lutz, D.
name: Boller, T.
name: Chelouche, Doron
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present new XMM-Newton observation of the Ultra Luminous Infrared Galaxy (ULIRG) NGC 6240. We analyze the reflecting grating spectrometer (RGS) data, and data from the other instruments, and find a starburst dominated 0.5-3 keV spectrum with global properties resembling those observed in M82 but with a much higher luminosity. We show that the starburst region can be divided into an outer zone, beyond a radius of about 2.1 kpc, with a gas temperature of about 10^7 K and a central region with temperatures in the range (2-6) x 10^7 K. The gas in the outer region emits most of the observed Oviii Lyman-alpha line and the gas in the inner region the emission lines of higher ionization ions, including a strong Fexxv line. We also identify a small inner part, very close to the active nuclei, with typical Seyfert 2 properties including a large amount of photoionized gas producing a strong Fe K-alpha 6.4 keV line. The combined abundance, temperature and emission measure analysis indicates super solar Ne/O, Mg/O, Si/O, S/O and possibly also Fe/O. The analysis suggests densities in the range of (0.07-0.28) x epsilon^(-1/2) cm^(-3) and a total thermal gas mass of about 4 x 10^8 x epsilon^(1/2) solar masses, where epsilon is the volume filling factor. We used a simple model to argue that a massive starburst with an age of about 2 x 10^7 years can explain most of the observed properties of the source. NGC 6240 is perhaps the clearest case of an X-ray bright luminous AGN, in a merger, whose soft X-ray spectrum is dominated by a powerful starburst.
description: 10 pages, 6 diagrams, accepted by ApJ, added a few minor changes
Out of the ark: the San Francisco Community Center Project
Creators: name: Robertson, Sean Bryan
Publisher: name: University of British Columbia
Year: 2009

description: In January 1997, with the support of the Office of the Mayor, an invited design competition was held to select the architect of a Community Center for San Francisco's Lesbian, Gay.Bisexual, and Transgendered communities. This thesis adopted this problem as its point of departure from a Directed Study on the history of sexuality, lesbian and gay visual cultures, and queer spaces. The intriguing aspect of this approach was developing an understandingof the identity of the Client as a way into the design; understanding that the Community is diverse and continuously both resists and accepts multiple identities. The work investigated the Client's relation to space and visual culture for vestiges of identity. The socio-spatial history of the Client is marked by a particular relation to public space of the metropolis: it was the ground for the contestation of contemporary social strictures. Public space is taken as precedent for the design; the project attempts to "institutionalize" public space or to be an exacerbation of "publicness." This is explored in two ways. Firstly, the plan is organized along a central spine that potentially extends into the adjacent property to the west (a future acquisition for the Center) and into the library and, theoretically, into the city to the east. The section of the project is legible on the elevation at the cafe, the rooftop patio staircase, the smaller bar "building" first level (at Market Street's street wall), and the ceremonial room. This strategy implies a continuation of the project beyond itself — the sections of building and city (street wall, overpass) seem to overlap and imply new interiors. Secondly, the project allows for public occupation at numerous positions from the basement to third floor, proffering opportunities for public activity beyond the street level. The visual history of mannerism in architecture has resonance with the world-view commentators associate with queers. Instead of limiting the intentions of a design to structural, economic and programmatic requirements, such architecture pursues complexity and contradiction: an exercise in excess and, arguably, an ineffectual endeavor. Queer culture embraces similar edicts. The attempt at gesture in building, as described above, is one such example in the project. Other moments articulate different formal problems. The canopy is too big for the door, but almost right for the scale of the city...the public elements of the small bar building have their own identity, yet form one whole under the same canopy...the Waller Street fenestration schedule is juxtaposed by the ceremonial room's double-height requirement.
A New Bound on the Length of Minimum Cycle Bases
Creators: name: Liebchen, Christian
name: Rizzi, Romeo
Publisher: name: Technische Universität Berlin
Year: 2006
Subjects: subject: 510 Mathematik
subject: combinatorial optimization
subject: minimum cycle basis problem
subject: weakly fundamental cycle bases
subject: tree metrics

description: For any weighted graph we construct a cycle basis of length O(W*log(n)*log(log(n))), where W denotes the sum of the weights of the edges. This improves the upper bound that was obtained only recently by Elkin et al. (2005) by a logarithmic factor. From below, our result has to be compared with Ω(W*log(n)), being the length of the minimum cycle bases (MCB) of a class of graphs with large girth.
A tree expansion formula of a homology intersection numbers on the configuration space $\mathcal{M}_{0,n}$
Creators: name: Matsubara-Heo, Saiei-Jaeyeong
Publisher: name: arXiv
Year: 2020
Subjects: subject: Combinatorics (math.CO)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: In \cite{M}, Sebastian Mizera discovered a tree expansion formula of a homology intersection number on the configuration space $\mathcal{M}_{0,n}$. The formula originates in a study of Kawai-Lewellen-Tye relation in string theory. In this paper, we give an elementary proof of the formula. The basic ingredients are the combinatorics of the real moduli space $\overline{\mathcal{M}}_{0,n}(\R)$ and a combinatorial identity related to the face number of the associahedron.
description: 17 pages, 6 figures. Comments are welcome
title: Ética digital, moralidad y Derecho en la era de las nuevas tecnologías
title: Programa de estudios en Ética Digital del Máster en Digitalisation and Human Rights de la Euro-Mediterranean University (EMUNI)
titleType: Subtitle
Creators: name: Banchio, Pablo
Publisher: name: Zenodo
Year: 2025
Subjects: Ética digital, derechos humanos, inteligencia artificial, marco regulatorio, derechos fundamentales, gobernanza ética
Digital ethics, human rights, artificial intelligence, regulatory framework, fundamental rights, ethical governance.

description: La acelerada digitalización y el despliegue de tecnologías emergentes, como la inteligencia artificial, el big data y el blockchain, han transformado radicalmente la sociedad moderna. No obstante, el progreso tecnológico también ha generado nuevos dilemas éticos, jurídicos y sociales, que han puesto en jaque los marcos legales tradicionales de protección de los derechos humanos. Este trabajo examina las tensiones entre la innovación tecnológica y los derechos fundamentales, proponiendo un enfoque integrado que articule la ética digital, la moralidad social y el derecho. Propone el análisis comparativo de diversos marcos teoricos y éticos, evaluando su eficacia y proyectando un modelo de gobernanza integral que combine leyes, estándares industriales y principios éticos para salvaguardar la dignidad humana en la era digital. La investigación concluye con recomendaciones normativas y éticas para abordar los desafíos actuales de la tecnología digital.

Palabras clave: Ética digital, derechos humanos, inteligencia artificial, marco regulatorio, derechos fundamentales, gobernanza ética.
description: DIGITAL ETHICS, MORALITY AND LAW IN THE AGE OF EMERGING TECHNOLOGIES

Abstract: The accelerated digitalisation and deployment of emerging technologies, such as artificial intelligence, big data and blockchain, have radically transformed modern society. Nonetheless, technological progress has also given rise to new ethical, legal and social dilemmas, which have challenged traditional legal frameworks for the protection of human rights. This paper examines the tensions between technological innovation and fundamental rights, proposing an integrated approach that articulates digital ethics, social morality and the law. It proposes the comparative analysis of various theoretical and ethical frameworks, assessing their effectiveness and projecting a comprehensive governance model that combines laws, industry standards, and ethical principles to safeguard human dignity in the digital age. The research concludes with normative and ethical recommendations to address the current challenges of digital technology.

Keywords: Digital ethics, human rights, artificial intelligence, regulatory framework, fundamental rights, ethical governance.
On the Hardness of Allocating Frequencies for Hybrid Networks
Creators: name: Malesińska, Ewa
name: Panconesi, Alessandro
Publisher: name: Technische Universität Berlin
Year: 1996
Subjects: subject: 510 Mathematik
subject: frequencies
subject: hybrid networks
subject: channel stability
subject: cellular networks

description: This paper studies the channel stability number, a combinatorial function that has been introduced for evaluating frequency allocation plans for hybrid cellular networks. We present several results concerning the approximability of this function in the case of complete graphs and analyze how different constraints influence its computational complexity.
Multi-scale Information Assembly for Image Matting
Creators: name: Qiao, Yu
name: Liu, Yuhao
name: Zhu, Qiang
name: Yang, Xin
name: Wang, Yuxin
name: Zhang, Qiang
name: Wei, Xiaopeng
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Image matting is a long-standing problem in computer graphics and vision, mostly identified as the accurate estimation of the foreground in input images. We argue that the foreground objects can be represented by different-level information, including the central bodies, large-grained boundaries, refined details, etc. Based on this observation, in this paper, we propose a multi-scale information assembly framework (MSIA-matte) to pull out high-quality alpha mattes from single RGB images. Technically speaking, given an input image, we extract advanced semantics as our subject content and retain initial CNN features to encode different-level foreground expression, then combine them by our well-designed information assembly strategy. Extensive experiments can prove the effectiveness of the proposed MSIA-matte, and we can achieve state-of-the-art performance compared to most existing matting networks.
description: Pacific Graphics 2020
Search for Neutral Higgs Bosons Decaying to Tau Pairs in p-pbar Collisions at sqrt(s) = 1.96 TeV
Creators: name: D0 Collaboration
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A search for the production of neutral Higgs bosons Phi decaying into tau^+tau^- final states in p-pbar collisions at a center-of-mass energy of 1.96 TeV is presented. The data, corresponding to an integrated luminosity of up to 348 pb^-1, were collected by the D0 experiment at the Fermilab Tevatron Collider. Since no excess compared to the expectation from standard model processes is found, limits on the production cross section times branching ratio are set. The results are combined with those obtained from the D0 search for Phi b(b) to b-bbar-b(bbar) and are interpreted in the minimal supersymmetric standard model.
description: Version accpeted by Phys. Rev. Lett. (minor changes)
Delay Resistant Timetabling
Creators: name: Liebchen, Christian
name: Stiller, Sebastian
Publisher: name: Technische Universität Berlin
Year: 2006
Subjects: subject: 510 Mathematik
subject: timetabling
subject: robust optimization
subject: stochastic programming
subject: public transport

description: The goal of this work is to support a management decision on how much prolongation of travel time one is willing to pay for delay resistance, and to ensure, that for a certain budget of buffer time the maximum resistance against delays is achieved.
Fermi arcs and surface criticality in dirty Dirac materials
Creators: name: Brillaux, Eric
name: Fedorenko, Andrei A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We study the effects of disorder on semi-infinite Weyl and Dirac semimetals where the presence of a boundary leads to the formation of either Fermi arcs/rays or Dirac surface states. Using a local version of the self-consistent Born approximation, we calculate the profile of the local density of states and the surface group velocity. This allows us to explore the full phase diagram as a function of boundary conditions and disorder strength. While in all cases we recover the sharp criticality in the bulk, we unveil a critical behavior at the surface of Dirac semimetals, which is smoothed out by Fermi arcs in Weyl semimetals.
description: 5 pages, 5 figures, supplemental material
Topological Transformations in Hyperuniform Pentagonal 2D Materials Induced by Stone-Wales Defects
Creators: name: Zheng, Yu
name: Chen, Duyu
name: liu, Lei
name: Zhuang, Houlong
name: Jiao, Yang
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We discover two distinct topological pathways through which the pentagonal Cairo tiling (P5), a structural model for single-layer $AB_2$ pyrite materials, respectively transforms into a crystalline rhombus-hexagon (C46) tiling and random rhombus-pentagon-hexagon (R456) tilings, by continuously introducing the Stone-Wales (SW) topological defects. We find these topological transformations are controlled by the orientation correlations among neighboring $B$-$B$ bonds, and exhibit a phenomenological analogy of the (anti)ferromagnetic to paramagnetic transition in two-state Ising systems. Unlike the SW defects in hexagonal 2D materials such as graphene, which cause distortions, the defects in pentagonal 2D materials preserve the shape and symmetry of the fundamental cell of P5 tiling and are associated with a minimal energy cost, making the intermediate R456 tilings realizable metastable states at room temperature. Moreover, the intermediate structures along the two pathways are neither crystals nor quasicrystals, and yet these random tilings preserve hyperuniformity of the P5 or C46 crystal (i.e., the infinite-wavelength normalized density fluctuations are completely suppressed), and can be viewed as 2D analogs of disordered Barlow packings in three dimensions. The resulting 2D materials possess metal-like electronic properties, making them promising candidates for forming Schottky barriers with the semiconducting P5 material.
Rational Decompositions of p-adic meromorphic functions
Creators: name: Mayerhofer, Eberhard
Publisher: name: arXiv
Year: 2005
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 30D05; 30D35; 11D88;11E95

description: Let K be a non archimedean algebraically closed field of characteristic pi complete for its ultrametric absolute value. In a recent paper by Escassut and Yang, polynomial decompositions P(f)=Q(g) for meromorphic functions f, g on K (resp. in a disk) have been considered, and for a class of polynomials P, Q, estimates for the Nevanlinna function T(r,f) have been derived. In the present paper we consider as a generalization rational decompositions of meromorphic functions. In the case, where f, g are analytic functions, the Second Nevanlinna Theorem yields an analogue result as in the mentioned paper. However, if they are meromorphic, non trivial estimates for T(r,f) are more sophisticated.
description: 13 pages
Visibility Interpolation in Solar Hard X-ray Imaging: Application to RHESSI and STIX
Creators: name: Perracchione, Emma
name: Massa, Paolo
name: Massone, Anna Maria
name: Piana, Michele
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Artificial Intelligence (cs.AI)
subject: Numerical Analysis (math.NA)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: 94A08, 65D05, 41A27, 65R32

description: Space telescopes for solar hard X-ray imaging provide observations made of sampled Fourier components of the incoming photon flux. The aim of this study is to design an image reconstruction method relying on enhanced visibility interpolation in the Fourier domain. % methods heading (mandatory) The interpolation-based method is applied on synthetic visibilities generated by means of the simulation software implemented within the framework of the Spectrometer/Telescope for Imaging X-rays (STIX) mission on board Solar Orbiter. An application to experimental visibilities observed by the Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI) is also considered. In order to interpolate these visibility data we have utilized an approach based on Variably Scaled Kernels (VSKs), which are able to realize feature augmentation by exploiting prior information on the flaring source and which are used here, for the first time, for image reconstruction purposes.} % results heading (mandatory) When compared to an interpolation-based reconstruction algorithm previously introduced for RHESSI, VSKs offer significantly better performances, particularly in the case of STIX imaging, which is characterized by a notably sparse sampling of the Fourier domain. In the case of RHESSI data, this novel approach is particularly reliable when either the flaring sources are characterized by narrow, ribbon-like shapes or high-resolution detectors are utilized for observations. % conclusions heading (optional), leave it empty if necessary The use of VSKs for interpolating hard X-ray visibilities allows a notable image reconstruction accuracy when the information on the flaring source is encoded by a small set of scattered Fourier data and when the visibility surface is affected by significant oscillations in the frequency domain.
When is the adjoint of a matrix a low degree rational function in the matrix?
Creators: name: Liesen, Jörg
Publisher: name: Technische Universität Berlin
Year: 2006
Subjects: subject: 510 Mathematik
subject: normal matrices
subject: representation of matrix adjoints
subject: rational interpolation
subject: Krylov subspace methods
subject: short recurrences

description: We show that the adjoint of a matrix with respect to a given inner product is a rational function in the matrix, if and only if the matrix is normal with respect to the inner product. We consider such matrices and analyze the McMillan degrees of the rational functions such that the matrix adjoint is a rational function in the matrix. We introduce the McMillan degree of the matrix as the smallest among these degrees, characterize this degree in terms of the number and distribution of the matrix eigenvalues, and compare the McMillan degree with the normal degree of the matrix, which is defined as the smallest degree of a polynomial for which the matrix adjoint is a polynomial in the matrix. We show that unless the matrix eigenvalues lie on a single circle in the complex plane, the ratio of McMillan degree and normal degree of the matrix is bounded by a small constant that depends neither on the number nor on the distribution of the matrix eigenvalues. Our analysis is motivated by applications in the area of short recurrence Krylov subspace methods.
Formation, Composition, and History of the Pluto System: A Post-New-Horizons Synthesis
Creators: name: McKinnon, William B.
name: Glein, Christopher R.
name: Bertrand, Tanguy
name: Rhoden, Alyssa R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The Pluto-Charon system provides a broad variety of constraints on planetary formation, composition, chemistry, and evolution. Pluto was the first body to be discovered in what is now known as the Kuiper belt, its orbit ultimately becoming a major clue that the giant planets underwent substantial orbital migration early in Solar System history. This migration has been linked to an early instability in the orbits of the giant planets and the formation of the Kuiper belt itself, from an ancestral trans-Neptunian planetesimal disk that included Pluto. Pluto-Charon is emblematic of what are now recognized as small or dwarf planets. Far from being a cold, dead, battered icy relic, Pluto displays evidence of a complex geological history, with ongoing processes including tectonism, cryovolcanism, solid-state convection, glacial flow, atmospheric circulation, surface-atmosphere volatile exchange, aeolian processes, and atmospheric photochemistry, microphysics, and haze formation. Despite Pluto's relatively modest scale, the combination of original accretional heat, long-term internal radiogenic heat release, and external solar forcing, when combined with sufficiently volatile (and thus mobile) materials, yields an active world. Pluto may have inherited a large organic mass fraction during accretion, which may responsible, in part, for its surface and atmospheric volatiles. Charon, Pluto's major moon, displays evidence of extensive early tectonism and cryovolcanism. Dwarf planets are thus truly planetary in terms of satellite systems and geological and atmospheric complexity (if not ongoing activity). What they may lack in mass is made up in number, and the majority of the Solar System's dwarf planets remain undiscovered.
description: 94 pages, 13 figures; will appear as a chapter/conference proceedings in the Space Science Series volume "The Pluto System After New Horizons," S.A. Stern et al., University of Arizona Press, Tucson, AZ
An additive theorem and restricted sumsets
Creators: name: Sun, Zhi-Wei
Publisher: name: arXiv
Year: 2006
Subjects: subject: Combinatorics (math.CO)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11B75; 05A05; 05B15; 05E99; 11C08; 11P99; 15A15; 20D60

description: Let G be any additive abelian group with cyclic torsion subgroup, and let A, B and C be finite subsets of G with cardinality n>0. We show that there is a numbering {a_i}_{i=1}^n of the elements of A, a numbering {b_i}_{i=1}^n of the elements of B and a numbering {c_i}_{i=1}^n of the elements of C, such that all the sums a_i+b_i+c_i (i=1,...,n) are distinct. Consequently, each subcube of the Latin cube formed by the Cayley addition table of Z/NZ contains a Latin transversal. This additive theorem can be further extended via restricted sumsets in a field.
New constraints on MOND from galaxy clusters
Creators: name: Pointecouteau, Etienne
name: Silk, Joseph
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We revisit the application of Modified Newtonian Dynamics (MOND) to galaxy clusters. We confront the high quality X-ray data for eight clusters of galaxies observed by the \xmm satellite with the predictions of MOND. We obtain a ratio of the MOND dynamical mass to the baryonic mass of $M_m/M_b=4.94\pm 0.50$ in the outer parts (i.e $r\sim 0.5$ ~ R$_{vir}$), in the concordance cosmological model where the predicted asymptotic ratio, if any baryons are present, is $7.7^{+1.4}_{-1.1}$ (at $r\geq 0.3$ ~ R$_{vir}$). We confirm that the MOND paradigm lowers the discrepancy between the binding mass and the baryonic mass in clusters by a factor of $\sim 1.6$ at about half the virial radius. However, at this radius about 80% of the mass is still missing, and as pointed out by \citet{sanders03}, this necessitates a component of dark baryons or neutrinos in the cluster core. Concerning the neutrino hypothesis, application of the new data requires a minimum neutrino mass of $m_ν>1.74\pm 0.34$ eV to fill this gap. The corresponding 2$σ$ lower limit of $m_ν>1.06$ eV is marginally inconsistent with the current constraints from the cluster number counts, and from the CMB and large scale structure data. MOND must invoke neutrinos to represent the main component that account for the missing mass problem in clusters.
description: 5 pages, 1 figure, accepted for publication in MNRAS. A section on the neutrino mass in the MOND framework was added to the discussion