cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Hyperbolic three-string vertex
Creators: name: Fırat, Atakan Hilmi
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Differential Geometry (math.DG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We begin developing tools to compute off-shell string amplitudes with the recently proposed hyperbolic string vertices of Costello and Zwiebach. Exploiting the relation between a boundary value problem for Liouville's equation and a monodromy problem for a Fuchsian equation, we construct the local coordinates around the punctures for the generalized hyperbolic three-string vertex and investigate their various limits. This vertex corresponds to the general pants diagram with three boundary geodesics of unequal lengths. We derive the conservation laws associated with such vertex and perform sample computations. We note the relevance of our construction to the calculations of the higher-order string vertices using the pants decomposition of hyperbolic Riemann surfaces.
description: 37 pages, 6 figures, v2: minor typos corrected, version published in JHEP
Μέμψη άστοργης δωρεάς:
Creators: name: Γκουτζίκα, Αγγελική Βασιλείου
Publisher: name: Aristotle University of Thessaloniki
Year: 2013
Subjects: νόμιμη μοίρα
δωρεά
μέμψη
legal fate
donation
overturn

description: Στην παρούσα μελέτη, εξετάζεται ο θεσμός της μέμψης άστοργης δωρεάς, ο οποίος ρυθμίζεται στο κεφάλαιο Ε’ του πέμπτου βιβλίου του Αστικού Κώδικα και συγκεκριμένα στα άρθρα 1835 -1838. Στο πρώτο κεφάλαιο κρίνεται σκόπιμο, ως αναγκαίο προαπαιτούμενο για την κατανόηση των ρυθμίσεων του εν λόγω θεσμού, η ανάλυση της έννοιας της νόμιμης μοίρας, η παράθεση του τρόπου υπολογισμού, των τρόπων με τους οποίους αυτή μπορεί να προσβληθεί από τον κληρονομούμενο, καθώς και η διαφορετική προστασία που προβλέπει ο νόμος υπέρ του νόμιμου μεριδούχου ανάλογα με τον τρόπο προσβολής της νόμιμης μοίρας. Στο δεύτερο κεφάλαιο, εξετάζεται ο θεσμός της μέμψης άστοργης δωρεάς ως προς τις προϋποθέσεις που θέτει ο νόμος, προκειμένου να μπορέσει ο μεριδούχος να ενεργοποιήσει την προστασία που έχει ταχθεί από το νόμο υπέρ αυτού, η αγωγή μέμψεως της άστοργης δωρεάς ως προς τις προϋποθέσεις του παραδεκτού και του βασίμου αλλά και ως προς το αίτημα αυτής, οι δυνατότητες άμυνας του εναγομένου κατ’ αυτής και τέλος τα αποτελέσματα, δηλαδή οι έννομες συνέπειες που αυτή επιφέρει στις έννομες σχέσεις των διαδίκων.
description: In the present study is examined the institution of overturn of loveless donation, which is regulated in chapter E of' fifth book of Greek Civil Code and concretely in the articles 1835-1838 .In the first chapter are judged advisable, as necessary for the comprehension of regulations of institution in question, the analysis of significance of legal fate, the presentation of way of calculation, the ways with which this can be offended from hereditary, as well as the different protection that forecasts the law in favour legal ihheritor depending on the way of offence of legal fate. In the second chapter, is examined the institution of overturnloveless donation as for the conditions that place the law, so that it can inheritor activate the protection that has been set by the law in favour of him, the action of overturn loveless donation as for the conditions of admissible and well-founded but also as for the demand of this, the ways of defendants defense against this and finally the results, that is to say the legal consequences that this involve in the legal relations of suitors.
Search for psi(2S)--> eta_c pi^+ pi^- pi^0
Creators: name: Pedlar, T.
name: Collaboration, CLEO
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Using 5.63 pb^-1 of data accumulated at the psi(2S) resonance with the CLEO III and CLEO-c detectors corresponding to 3.08 million psi(2S) decays, a search is performed for the decay psi(2S) -> eta_c pi^+pi^-pi^0 to test a theoretical prediction based upon the assumption that the c \bar c pair in the psi(2S) does not annihilate directly into three gluons but rather survives before annihilating. No signal is observed, and a combined upper limit from six eta_c decay modes is determined to be B(psi(2S) -> eta_c pi^+pi^-pi^0) < 1.0 x 10^-3 at 90% C.L. This upper limit is about an order of magnitude below the theoretical expectation.
description: 8 pages postscript,also available through http://www.lns.cornell.edu/public/CLNS/2006/
Πολυπυρηνικά μικτού σθένους σύμπλοκα του κοβαλτίου με τριαιθανολαμίνη
Creators: name: Μαραγκού, Ασπασία Στέργιου
Publisher: name: Aristotle University of Thessaloniki
Year: 2013
Subjects: Κοβάλτιο
Τριαιθανολαμίνη
Μονομοριακός μαγνήτης
Cobalt
Triethanolamine
Single-Molecule Magnet

description: Τέσσερα νέα πολυπυρηνικά μικτού σθένους σύμπλοκα [CoII2CoIII2(tea)2(NO3)4(py)2]2CH3CN(1), [CoIICoIII4(tea)2(Htea)2(py)4](NO3)4•10H2O(2), [CoII4CoIII3(Htea)4(tea)3](NO3)22CH3OH3.5H2O (3) και [CoII3CoIII4(tea)6]•8H2O (4) συντέθηκαν και χαρακτηρίστηκαν με στοιχειακή ανάλυση, φασματοσκοπία FT –IR, φασματοσκοπία Uv – Vis, μετρήσεις μοριακής αγωγιμότητας και μαγνητικής επιδεκτικότητας. Οι δομές των συμπλόκων προσδιορίστηκαν με παρίθλαση ακτίνων – Χ. Οι μαγνητικές ιδιότητες των συμπλόκων (1) και (3) μελετήθηκαν σε εύρος θερμοκρασιών 1.9 – 300Κ. Στο σύμπλοκο (1) παρατηρείται ισχυρή αντισιδηρομαγνητική αλληλεπίδραση ανταλλαγής μεταξύ των υψηλού – spin ιόντων κοβαλτίου (ΙΙ) που συνδέονται μέσω του διαμαγνητικού ιόντος κοβαλτίου (ΙΙΙ). Το σύμπλοκο (3) επιδεικνύει συμπεριφορά μονομοριακού μαγνήτη (SMM). . Επιπλέον για το σύμπλοκο (1), μελετήθηκε η αλληλεπίδρασή του με το DNA με φασματοσκοπία υπεριώδους – ορατού (Uv – Vis) και με φθορισμομετρία. Προσδιορίστηκαν τόσο η σταθερά σύνδεσης (Κb = 3•106 M-1) του συμπλόκου (1), όσο και η σταθερά Stern–Volmer (Ksv = 1,65•104 Μ-1). Ο συνδυασμός των αποτελεσμάτων από τις δύο τεχνικές που χρησιμοποιήσαμε συνηγορεί στο ότι πιθανόν το σύμπλοκο (1) να αλληλεπιδρά με το DNA μέσω παρεμβολής.
description: Four new polynuclear mixed valence cobalt complexes [CoII2CoIII2(tea)2(NO3)4(py)2]2CH3CN(1), [CoIICoIII4(tea)2(Htea)2(py)4](NO3)4•10H2O(2), [CoII4CoIII3(Htea)4(tea)3](NO3)22CH3OH3.5H2O (3) and [CoII3CoIII4(tea)6]•8H2O (4) have been synthesized and characterized by elemental analysis, FT – IR, Uv – Vis, susceptibility measurements and conductivity measurements. The structures of the complexes were determined by single crystal X – ray diffraction analysis. The value state of each cobalt ion was established by bond valence sum calculations. The magnetic properties of complexes (1) and (3) have been investigated in the temperature range 1.9 – 300K. A very strong antiferromagnetic exchange interaction between the high – spin cobalt (II) ions which are connected via diamagnetic cobalt (III) ion occurs in complex (1). The complex (3) was found to behave as a single – molecule magnet (SMM). Further, the interaction of complex (1) with calf – thymus DNA (CT-DNA) was investigated by UV – Vis absorption spectroscopy and fluorescence spectroscopy. The intrinsic binding constant (Κb = 3•106 M-1) was determined as well as the Stern–Volmer constant (Ksv = 1,65•104 Μ-1). The experimental results revealed that the complex (1) bound with DNA via an intercalation mode.
MODELING OF 3D ATMOSPHERES OF COOL STARS WITH THE MANCHA CODE
Creators: name: Perdomo, Andrea
name: Vitas, Nikola
name: Khomenko, Elena
name: Collados, Manuel
Publisher: name: Zenodo
Year: 2021
Subjects: convection, hydrodynamics, stellar atmospheres, cool stars, simulations

description: The first results of the application of the MANCHA code to the case of stars beyond the solar case are presented: hydrodynamical simulations of stars of spectral type K0V and M0V compared with the solar case.
Simple analog of the black-hole information paradox in quantum Hall interfaces
Creators: name: Ma, Ken K. W.
name: Yang, Kun
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The black hole information paradox has been hotly debated for the last few decades, without full resolution. This makes it desirable to find analogs of this paradox in simple and experimentally accessible systems, whose resolutions may shed light on this long-standing and fundamental problem. Here we identify and resolve an apparent "information paradox" in a quantum Hall interface between the Halperin-331 and Pfaffian states. Information carried by the pseudospin degree of freedom of the Abelian 331 quasiparticles gets scrambled when they cross the interface to enter non-Abelian Pfaffian state, and becomes inaccessible to local measurements; in this sense the Pfaffian region is an analog of black hole interior while the interface plays a role similar to its horizon. We demonstrate that the "lost" information gets recovered once the "black hole" evaporates and the quasiparticles return to the 331 region, albeit in a highly entangled form. Such recovery is quantified by the Page curve of the entropy carried by these quasiparticles, which are analogs of Hawking radiation.
description: Accepted version by PRB
The Moduli Space and M(atrix) Theory of 9d N=1 Backgrounds of M/String Theory
Creators: name: Aharony, Ofer
name: Komargodski, Zohar
name: Patir, Assaf
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss the moduli space of nine dimensional N=1 supersymmetric compactifications of M theory / string theory with reduced rank (rank 10 or rank 2), exhibiting how all the different theories (including M theory compactified on a Klein bottle and on a Mobius strip, the Dabholkar-Park background, CHL strings and asymmetric orbifolds of type II strings on a circle) fit together, and what are the weakly coupled descriptions in different regions of the moduli space. We argue that there are two disconnected components in the moduli space of theories with rank 2. We analyze in detail the limits of the M theory compactifications on a Klein bottle and on a Mobius strip which naively give type IIA string theory with an uncharged orientifold 8-plane carrying discrete RR flux. In order to consistently describe these limits we conjecture that this orientifold non-perturbatively splits into a D8-brane and an orientifold plane of charge (-1) which sits at infinite coupling. We construct the M(atrix) theory for M theory on a Klein bottle (and the theories related to it), which is given by a 2+1 dimensional gauge theory with a varying gauge coupling compactified on a cylinder with specific boundary conditions. We also clarify the construction of the M(atrix) theory for backgrounds of rank 18, including the heterotic string on a circle.
description: 43 pages, 7 figures, JHEP format. v3: typos corrected
Probing the magnetospheric accretion region of the young system DoAr 44 using VLTI/GRAVITY
Creators: name: Bouvier Jerome
name: Perraut Karine
name: Alecian Evelyne
Publisher: name: Zenodo
Year: 2021
Subjects: Young stars

description: Young stars accrete material from their circumstellar disk through magnetically-controlled funnel flows. This so-called magnetospheric accretion process is central to the properties of young systems and not yet fully deciphered. We report here on an attempt to directly probe the star-disk interaction region a scale of less than 0.1 au in the young system DoAr 44, using with VLTI/GRAVITY in the K-band. We computed interferometric visibilities and phases in the continuum and in the Br$\gamma$ line in order to constrain the extent and geometry of the emitting regions. We resolve the continuum emission of the inner dusty disk and measure a half-flux radius of 0.14 au. We show that Br$\gamma$ emission arises from an even more compact region than the inner disk, with an upper limit of 0.047 au (∼5 R$_\star$). Differential phase measurements between the Br$\gamma$ line and the continuum allow us to measure the astrometric displacement of the Br$\gamma$ line-emitting region relative to the continuum on a scale of a few tens of microarcsec, corresponding to a fraction of the stellar radius. Our results can be accounted for by a simple geometric model where the Br$\gamma$ line emission arises from a compact region interior to the inner disk edge, on a scale of a few stellar radii, fully consistent with the concept of magnetospheric accretion process in low-mass young stellar systems.
Forward scattering amplitudes and the thermal operator representation
Creators: name: Brandt, Fernando T.
name: Das, Ashok
name: Frenkel, Josif
name: Perez, Silvana
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We develop systematically to all orders the forward scattering description for retarded amplitudes in field theories at zero temperature. Subsequently, through the application of the thermal operator, we establish the forward scattering description at finite temperature. We argue that, beyond providing a graphical relation between the zero temperature and the finite temperature amplitudes, this method is calculationally quite useful. As an example, we derive the important features of the one loop retarded gluon self-energy in the hard thermal loop approximation from the corresponding properties of the zero temperature amplitude.
description: 16 pages, 6 figures
Language learning in school-age children
Creators: name: O’Hara, Margaret
Publisher: name: University of British Columbia
Year: 2009

description: This research investigated syntactic bootstrapping -- a process presumed to facilitate the acquisition of language knowledge -- in children with specific language impairment (SLI). This process involves the use of syntactic information to learn new verbs. Six SLI children (mean CA 7;9) were matched on grammatical comprehension abilities to six younger children with normal language (NL) development (mean CA 6;2). Sentences containing novel verbs were presented orally by the examiner to the children. The children demonstrated interpretation of the sentences in an object manipulation procedure. The experiment was designed to determine if the level of syntactic knowledge, as measured by grammatical comprehension, accounted for syntactic bootstrapping performance. A grammatical judgment task also tested the connection between syntactic bootstrapping and metalinguistic awareness. The results indicate that young school-age SLI children cannot predict new verb meanings from syntactic frameworks. Although data support previous findings (van der Lely, 1994), methodological adjustments made in the present study clearly justify claims made about the nature of syntactic bootstrapping. Data are interpreted as evidence that a group difference in syntactic bootstrapping is not the result of a deficit in syntactic knowledge, but rather due to other processes. Evidence was found that supports a relationship between syntactic bootstrapping and metalinguistic awareness. Interpretations were made considering an underlying process related to syntactic analysis that may explain the syntactic bootstrapping and metalinguistic connection, and perhaps ultimately the slower language learning overall of SLI children.
Improved Perturbation Method and its Application to the IIB Matrix Model
Creators: name: Aoyama, T.
name: Shibusa, Y.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present a new scheme for extracting approximate values in ``the improved perturbation method'', which is a sort of resummation technique capable of evaluating a series outside the radius of convergence. We employ the distribution profile of the series that is weighted by nth-order derivatives with respect to the artificially introduced parameters. By those weightings the distribution becomes more sensitive to the ``plateau'' structure in which the consistency condition of the method is satisfied. The scheme works effectively even in such cases that the system involves many parameters. We also propose that this scheme has to be applied to each observables separately and be analyzed comprehensively. We apply this scheme to the analysis of the IIB matrix model by the improved perturbation method obtained up to eighth order of perturbation in the former works. We consider here the possibility of spontaneous breakdown of Lorentz symmetry, and evaluate the free energy and the anisotropy of space-time extent. In the present analysis, we find an SO(10)-symmetric vacuum besides the SO(4)- and SO(7)-symmetric vacua that have been observed. It is also found that there are two distinct SO(4)-symmetric vacua that have almost the same value of free energy but the extent of space-time is different. From the approximate values of free energy, we conclude that the SO(4)-symmetric vacua are most preferred among those three types of vacua.
description: 52 pages, published version
Hyperspectral Denoising Using Unsupervised Disentangled Spatio-Spectral Deep Priors
Creators: name: Miao, Yu-Chun
name: Zhao, Xi-Le
name: Fu, Xiao
name: Wang, Jian-Li
name: Zheng, Yu-Bang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Image denoising is often empowered by accurate prior information. In recent years, data-driven neural network priors have shown promising performance for RGB natural image denoising. Compared to classic handcrafted priors (e.g., sparsity and total variation), the "deep priors" are learned using a large number of training samples -- which can accurately model the complex image generating process. However, data-driven priors are hard to acquire for hyperspectral images (HSIs) due to the lack of training data. A remedy is to use the so-called unsupervised deep image prior (DIP). Under the unsupervised DIP framework, it is hypothesized and empirically demonstrated that proper neural network structures are reasonable priors of certain types of images, and the network weights can be learned without training data. Nonetheless, the most effective unsupervised DIP structures were proposed for natural images instead of HSIs. The performance of unsupervised DIP-based HSI denoising is limited by a couple of serious challenges, namely, network structure design and network complexity. This work puts forth an unsupervised DIP framework that is based on the classic spatio-spectral decomposition of HSIs. Utilizing the so-called linear mixture model of HSIs, two types of unsupervised DIPs, i.e., U-Net-like network and fully-connected networks, are employed to model the abundance maps and endmembers contained in the HSIs, respectively. This way, empirically validated unsupervised DIP structures for natural images can be easily incorporated for HSI denoising. Besides, the decomposition also substantially reduces network complexity. An efficient alternating optimization algorithm is proposed to handle the formulated denoising problem. Semi-real and real data experiments are employed to showcase the effectiveness of the proposed approach.
description: This paper may be accepted by IEEE Transactions on Geoscience and Remote Sensing
Modeling sequence-space exploration and emergence of epistatic signals in protein evolution
Creators: name: Bisardi, Matteo
name: Rodriguez-Rivas, Juan
name: Zamponi, Francesco
name: Weigt, Martin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Biomolecules (q-bio.BM)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Populations and Evolution (q-bio.PE)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: During their evolution, proteins explore sequence space via an interplay between random mutations and phenotypic selection. Here we build upon recent progress in reconstructing data-driven fitness landscapes for families of homologous proteins, to propose stochastic models of experimental protein evolution. These models predict quantitatively important features of experimentally evolved sequence libraries, like fitness distributions and position-specific mutational spectra. They also allow us to efficiently simulate sequence libraries for a vast array of combinations of experimental parameters like sequence divergence, selection strength and library size. We showcase the potential of the approach in re-analyzing two recent experiments to determine protein structure from signals of epistasis emerging in experimental sequence libraries. To be detectable, these signals require sufficiently large and sufficiently diverged libraries. Our modeling framework offers a quantitative explanation for the variable success of recently published experiments. Furthermore, we can forecast the outcome of time- and resource-intensive evolution experiments, opening thereby a way to computationally optimize experimental protocols.
description: 16 pages, 14 figures
Youth assessment in near infrared spectra of brown dwarfs and very low mass stars: a case study in NGC2244
Creators: name: Almendros-Abad, Víctor
name: Muzic, Kora
name: Moitinho, André
name: Krone-Martins, Alberto
name: Kubiak, Karolina
Publisher: name: Zenodo
Year: 2021
Subjects: Spectroscopy
Machine Learning
Young stellar clusters

description: Studies of young brown dwarf populations are crucial to understand their formation mechanisms, but also to grasp all the channels through which star and planet formation processes may go. When searching for young brown dwarfs in star forming regions, the main obstacle is the determination of cluster membership, which cannot be established by photometry alone. Spectroscopic follow-up is an indispensable step to obtain robust samples of low-gravity, young members. I will present a new method for the analysis of very-low mass object spectra with spectral types between M0 and L2, using near-infrared J-, H- and K-bands (1.1-2.4 $\mu$m). We define a new gravity-sensitive spectral index, which performs consistently well over the spectral range of interest, unlike any of the previously defined indices. We also evaluate the performance of machine learning methods for youth assessment using the entire object spectrum. Finally, we apply our methods to 140 KMOS/VLT spectra of very-low mass candidates in the 2 Myr old cluster NGC 2244, part of a bigger project that aims at testing the effects of the environment in substellar formation. We report the discovery of the first spectroscopically confirmed brown dwarfs located at kpc distances.
Editorial: Statistics and "The lost tomb of Jesus"
Creators: name: Fienberg, Stephen E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: What makes a problem suitable for statistical analysis? Are historical and religious questions addressable using statistical calculations? Such issues have long been debated in the statistical community and statisticians and others have used historical information and texts to analyze such questions as the economics of slavery, the authorship of the Federalist Papers and the question of the existence of God. But what about historical and religious attributions associated with information gathered from archeological finds? In 1980, a construction crew working in the Jerusalem neighborhood of East Talpiot stumbled upon a crypt. Archaeologists from the Israel Antiquities Authority came to the scene and found 10 limestone burial boxes, known as ossuaries, in the crypt. Six of these had inscriptions. The remains found in the ossuaries were reburied, as required by Jewish religious tradition, and the ossuaries were catalogued and stored in a warehouse. The inscriptions on the ossuaries were catalogued and published by Rahmani (1994) and by Kloner (1996) but there reports did not receive widespread public attention. Fast forward to March 2007, when a television ``docudrama'' aired on The Discovery Channel entitled ``The Lost Tomb of Jesus'' touched off a public and religious controversy--one only need think about the title to see why there might be a controversy! The program, and a simultaneously published book [Jacobovici and Pellegrino (2007)], described the ``rediscovery'' of the East Talpiot archeological find and they presented interpretations of the ossuary inscriptions from a number of perspectives. Among these was a statistical calculation attributed to the statistician Andrey Feuerverger: ``that the odds that all six names would appear together in one tomb are 1 in 600, calculated conservatively--or possibly even as much as one in one million.''
description: Published in at http://dx.doi.org/10.1214/08-AOAS162 the Annals of Applied Statistics (http://www.imstat.org/aoas/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Chandra Detection of Fe XVII in Absorption: Iron Abundance in the Hot Gaseous Interstellar Medium
Creators: name: Yao, Yangsen
name: Schulz, Norbert
name: Wang, Q. Daniel
name: Nowak, Michael
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The iron depletion level and the gas-phase iron abundance in the hot ~10^6 K interstellar medium (ISM) is critical to the understanding of its energy balance as well as the thermal sputtering, cooling, and heating processes of dust grains. Here we report on the first detection of the Fe XVII absorption line at 15.02 A from the hot ISM in the spectrum of the low mass X-ray binary 4U~1820-303 observed with Chandra X-Ray Observatory. By jointly analyzing this absorption line with those from OVII, OVIII, and NeIX ions in the same spectrum, we obtain an abundance ratio as Fe/Ne=0.8(0.4, 2.1) in units of the Anders & Grevesse solar value (90% confidence intervals). We find that the result is robust with respect to different assumed gas temperature distributions. The obtained Fe/Ne abundance ratio, albeit with large uncertainties, is consistent with the solar value, indicating that there is very little or no iron depleted into dust grains, i.e., most of or all of the dust grains have been destroyed in the hot ISM.
description: Minor changes, to match the published version in ApJ Letter, 2006, 653
Exploring the Landscape for Soft Theorems of Nonlinear Sigma Models
Creators: name: Rodina, Laurentiu
name: Yin, Zhewei
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We generalize soft theorems of the nonlinear sigma model beyond the $\mathcal{O} (p^2)$ amplitudes and the coset of $\text{SU} (N) \times \text{SU} (N) / \text{SU} (N) $. We first discuss the universal flavor ordering of the amplitudes for the Nambu-Goldstone bosons, so that we can reinterpret the known $\mathcal{O} (p^2)$ single soft theorem for $\text{SU} (N) \times \text{SU} (N) / \text{SU} (N) $ in the context of a general symmetry group representation. We then investigate the special case of the fundamental representation of $\text{SO} (N)$, where a special flavor ordering of the "pair basis" is available. We provide novel amplitude relations and a Cachazo-He-Yuan formula for such a basis, and derive the corresponding single soft theorem. Next, we extend the single soft theorem for a general group representation to $\mathcal{O} (p^4)$, where for at least two specific choices of the $\mathcal{O} (p^4)$ operators, the leading non-vanishing pieces can be interpreted as new extended theory amplitudes involving bi-adjoint scalars, and the corresponding soft factors are the same as at $\mathcal{O} (p^2)$. Finally, we compute the general formula for the double soft theorem, valid to all derivative orders, where the leading part in the soft momenta is fixed by the $\mathcal{O}(p^2)$ Lagrangian, while any possible corrections to the subleading part are determined by the $\mathcal{O}(p^4)$ Lagrangian alone. Higher order terms in the derivative expansion do not contribute any new corrections to the double soft theorem.
description: 46 pages + appendices, 15 figures; matched to the published version in v2
Determination of fragmentation functions and their uncertainties
Creators: name: Hirai, M.
name: Kumano, S.
name: Nagai, T. -H.
name: Sudoh, K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Fragmentation functions and their uncertainties are determined for pion, kaon, and proton by a global $χ^2$ analysis of charged-hadron production data in electron-positron annihilation and by the Hessian method for error estimation. It is especially important that the uncertainties of the fragmentation functions are estimated in this analysis. The results indicate that the fragmentation functions, especially gluon and light-quark fragmentation functions, have large uncertainties at small $Q^2$. There are large differences between widely-used functions by KKP (Kniehl, Kramer, and Pötter) and Kretzer; however, they are compatible with each other and also with our functions if the uncertainties are taken into account. We find that determination of the fragmentation functions is improved in next-to-leading-order (NLO) analyses for the pion and kaon in comparison with leading-order ones. Such a NLO improvement is not obvious in the proton. Since the uncertainties are large at small $Q^2$, the uncertainty estimation is very important for analyzing hadron-production data at small $Q^2$ or $p_T$ ($Q^2, p_T^2 << M_Z^2$) in lepton scattering and hadron-hadron collisions. A code is available for general users for calculating obtained fragmentation functions.
description: 16 pages, 15 figures, revtex. to be published in Phys. Rev. D
Interrogational torture criminal proceedings: reflections on legal history I
Creators: name: Krey, Volker
name: Roggenfelder, Thomas
Publisher: name: Trier University
Year: 2014
Subjects: subject: Strafverfahren
subject: Vernehmung
subject: Folter
subject: lawsuit
subject: interrogation
subject: torture

description: Subject of this publication is torture as an interrogational instrument in criminal proceedings from a legal history point of view. Thereby, the author makes a distinction between torturing the accused on the one hand and, on the other hand, torture as an instrument to force a witness' incriminating testimony against third parties (in German: Zeugenfolter), torture as a means to avert dangers (lifesaving torture), torture as an additional cruelty to the accused's punishment (in German: Straffolter), and corporal punlishment for lying in a court. Only the first manifestation, namely torturing the accused intending to extort his confession, is the real subject of this paper.
Η προσβολή της προσωπικότητας στο διαδίκτυο
Creators: name: Μυλωνάκη, Σοφία Μίνωος-Σπυρίδωνος
Publisher: name: Aristotle University of Thessaloniki
Year: 2013
Subjects: Προσωπικότητα
Διαδίκτυο
Internet
Personality
Cyberspace

description: Η παρούσα διπλωματική εργασία εξετάζει τις προσβολές της προσωπικότητας που λαμβάνουν χώρα στο διαδίκτυο και ερευνά τα μέσα προστασίας του προσβαλλόμενου. Το πρώτο μέρος πραγματεύεται την έννοια της προσωπικότητας, τις εκφάνσεις της προσωπικότητας που προστατεύονται από τις διατάξεις του Αστικού Κώδικα (άρθρα 57 έως 59 ΑΚ) και τις προϋποθέσεις υπό τις οποίες εφαρμόζονται οι διατάξεις αυτές. Το δεύτερο μέρος περιγράφει τις δυσκολίες που ανακύπτουν από την ιδιαιτερότητα του ίντερνετ και εστιάζει στην ευθύνη των φορέων παροχής υπηρεσιών και την ανωνυμία του προσβάλλοντος. Επιπρόσθετα, επιχειρείται η κατηγοριοποίηση των διαδικτυακών προσβολών με βάση την εκάστοτε προσβαλλόμενη έκφανση της προσωπικότητας. Τέλος, στο τελευταίο κεφάλαιο του δεύτερου μέρους αναλύονται οι προσβολές και τα μέσα προστασίας του προσβαλλόμενου, όταν η βλαπτική συμπεριφορά τελείται μέσω των διαδικτυακών ΜΜΕ, των ιστολογίων, των ομάδων συζητήσεων και των τακτικών ανεπιθύμητης αλληλογραφίας.
description: This paper examines the infringements of personality that take place in cyberspace and investigates the remedies of the injured part. The first part deals with the meaning of personality, the aspects of personality that are being protected by the provisions of the Greek Civil Code (articles 57 to 59 CC) and the circumstances under which the above provisions can be applied. The second part describes the difficulties arising from the peculiarity of the internet and focuses on the responsibility of the internet service providers and the problems caused by the anonymity of the offender. Furthermore, there is an attempt to categorize the cyber infringements of the right of personality according to the aspect of personality that is being violated. Finally, the last chapter of the second part analyzes the violations and the remedies of the injured part when a harmful behavior occurs through internet mass media, blogs, newsgroups – forums and via spamming tactics.
A method of measurement of extragalactic magnetic fields by TeV gamma ray telescopes
Creators: name: Neronov, A.
name: Semikoz, D. V.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We propose a method of measurement of extragalactic magnetic fields in observations of TeV gamma-rays from distant blazars. Multi-TeV gamma-rays are emitted by these sources in narrow jet with opening angle of few degrees. These primary gamma-rays interact with the infrared photon background producing secondary electrons and positrons, which can be just slightly deflected by extragalactic magnetic fields before they emit secondary gamma-rays via inverse Compton scattering of cosmic microwave background photons. Secondary gamma-rays emitted toward an observer on the Earth can be detected as extended emission around initially point source. Energy dependent angular size of extended emission is related to the value of extragalactic magnetic field along the line of sight. Small magnetic fields B < 10^{-12} G in the voids of the large scale structure can be measured in this way.
description: 4 pages, 2 figures
Development of a simplified model to quantify thermal propagation in direct integration concepts for prismatic cells
Creators: name: Plöpst, Jan-Darius
name: Hinkers, Michael
name: Wessel, Saskia
name: Lux, Simon
name: :Unav
Publisher: name: Fraunhofer-Gesellschaft
Year: 2025

description: In view of the limited availability of raw materials in Europe, especially in Germany, the complete electri fication of the transport sector requires innovative technologies that are both efficient and save resources. In addition to ongoing research on alternative battery technologies, optimizing the integration of lithium ion battery cells (LIB) in battery systems plays a key role. Original equipment manufacturers (OEMs) are exploring novel concepts to maximize the energy density of battery systems. A significant example of this is the transition to a "cell-to-pack" architecture, which in theory allows for a 15-20% increase in energy density by removing modular structures and their supporting elements. However, these concepts have primarily been implemented with the safer lithium iron phosphate (LFP) cell chemistry, which, on the other hand, has a lower capacity and thus compensates for the intended increase in energy density. A promising approach would be to integrate high-energy cathode cell chemistry, such as nickel-manganese-cobalt oxide (NMC) 811, into a direct integration concept, which could potentially lead to a further increase in energy density and thus to higher ranges for battery electric vehicles. In addition, a reduction in the number of battery cells per vehicle would be conceivable, which would significantly reduce weight, costs and resource consumption. However, one crucial challenge in this packaging architecture is the elimination of protective modules, which increases the safety requirements for the cells in the event of an accident. To support the development of such direct integration concepts, advanced simulation models are beneficial as they help to reduce costs and development time. However, current models are limited for industrial applications for the design of propagation protection due to their high complexity and limited adaptability. These limitations are particularly apparent when cell chemistry or other relevant parameters change. The present work therefore deals with the development of a simplified quantification model for thermal propa gation, which should help to accelerate the development of direct integration concepts. The poster presents initial approaches and results of the model.
Towards baryogenesis via absorption from Primordial Black Holes
Creators: name: Ambrosone, Antonio
name: Calabrese, Roberta
name: Fiorillo, Damiano F. G.
name: Miele, Gennaro
name: Morisi, Stefano
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Recently Dolgov and Pozdnyakov proposed a new baryogenesis mechanism in which baryon asymmetry is produced without violating baryon number at the Lagrangian level. In this scenario, baryon asymmetry is generated by absorption of a new particle X carrying baryon number onto Primordial Black Holes (PBHs). Assuming CP-violation, the particle X is absorbed at a different rate than the antiparticle $\bar{X}$, producing an asymmetry in the baryonic number. We independently test this scenario, finding that it suffers from two fundamental issues.\\ At the phenomenological level, strong absorption by PBHs initially increases the baryon asymmetry. However, at later times such asymmetry is completely absorbed by PBHs. In order to overcome this issue, we account for PBH evaporation, which provides a natural way of halting the absorption while keeping a finite baryon asymmetry. We provide a systematic study of the parameter space, identifying the regions leading to the production of the baryon asymmetry without violating the known constraints on PBHs concentration. At the theoretical level, a model realizing the CP-violation postulated in this scenario is difficult to realize. We show, by implementing a minimal model, that the framework proposed in the original work in order to produce CP-violation, even if qualitatively correct, is quantitatively in disagreement with the observed baryon asymmetry, namely this mechanism produces only a fraction of the total baryon asymmetry.
description: 8 pages, 3 figures
FOIM: From foam to foil and back again
Creators: name: Poser, Anna-Lisa
name: Pretsch, Thorsten
name: :Unav
Publisher: name: Fraunhofer-Gesellschaft
Year: 2025

description: Shape memory polymers (SMPs) are smart materials that perform a shape change in response to an external stimulus, usually a temperature change, after being thermomechanically treated. This thermomechanical process is referred to as “programming” and involves heating the SMP above the phase transition temperature of the switching segments (glass or melting transition temperature), loading, cooling below the phase transition temperature (glass or crystallization transition temperature) and unloading. The SMP retains the programmed shape until it is heated above the transition temperature again, which triggers the one-way shape memory effect and the material returns to its original shape. The current study presents the semi-finished product FOIM (cf. Figure 1), a polyester urea urethane foam with a hard/soft segment ratio of 1.06 and an open pore content of 78 %. As determined by differential scanning calorimetry, the foam exhibited a melting peak at around 45 °C and a crystallization peak at 14 °C. When subjected to significant compressive deformation at 60 °C and afterwards cooling to room temperature, upon programming, the foam transformed into a translucent foil that remained stable at room temperature. When reheated to 60 °C, the foil turned back into foam recovering 99.5% of its original height. Notably, the structure remained largely unaffected by the deformation, as evidenced by buoyancy and heat transmission measurements. The ease of manufacture and functionality of this technology make it attractive for applications that require both a smaller transport volume and significant shape changes. References: [1] T. Pretsch in Smart Materials (Ed.: H. Böse), Vogel Communications Group, Würzburg, 2023, pp. 227–259. [2] L. Santo, Progress in Aerospace Sciences 2016, 81, 60-65. [3] A.-L. Poser, T. Pretsch; “FOIM: Thermal Foaming of Shape Memory Polyurethane Foil”, manuscript submitted for publication.
Matrix norms and rapid mixing for spin systems
Creators: name: Dyer, Martin
name: Goldberg, Leslie Ann
name: Jerrum, Mark
Publisher: name: arXiv
Year: 2007
Subjects: subject: Probability (math.PR)
subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 15A60, 60J10, 68W20, 68W40, 82B20 (Primary)

description: We give a systematic development of the application of matrix norms to rapid mixing in spin systems. We show that rapid mixing of both random update Glauber dynamics and systematic scan Glauber dynamics occurs if any matrix norm of the associated dependency matrix is less than 1. We give improved analysis for the case in which the diagonal of the dependency matrix is $\mathbf{0}$ (as in heat bath dynamics). We apply the matrix norm methods to random update and systematic scan Glauber dynamics for coloring various classes of graphs. We give a general method for estimating a norm of a symmetric nonregular matrix. This leads to improved mixing times for any class of graphs which is hereditary and sufficiently sparse including several classes of degree-bounded graphs such as nonregular graphs, trees, planar graphs and graphs with given tree-width and genus.
description: Published in at http://dx.doi.org/10.1214/08-AAP532 the Annals of Applied Probability (http://www.imstat.org/aap/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Cycling center: a multi-use center to support and promote cycling
Creators: name: Palmer, Thomas Allan
Publisher: name: University of British Columbia
Year: 2009

description: The Cycling Center is a proposal for an architecture dedicated to cyclists and the bicycle. Although cycling has been around for over 100 years, there have been few examples of architectural buildings designed for cyclists and their bicycles. In contrast, gasoline vehicles have had many structures fashioned especially for them and continue to place considerable constraints on most new building designs. The Cycling Center, to be located on a portion of the Burrard Street Bridge Civic Marina parking lot (adjacent to Vanier Park), is meant to function as a multi-purpose center for the promotion and support of cycling in Vancouver and British Columbia I. Furthermore, it serves as an attitude of global responsibility, urban renewal and community spirit which many cyclists hold. In order to change the view and actions of both the government and the public, a comprehensive effort to promote global awareness and responsibility is essential. The Cycling Center conthbutes to this effort by providing the following components: hotel/hostel design for use by primarily, but not exclusively, cyclists; administration center for cycling organizations; community bicycle repair/recycling center; educational facility (to promote cycling, cycling safety and cycling responsibility); retail/rental outlet (including bicycle storage and support facilities) and live/work business (for resident manager of the Cycling Center).
Orbital approach to microstate free entropy
Creators: name: Hiai, Fumio
name: Miyamoto, Takuho
name: Ueda, Yoshimichi
Publisher: name: arXiv
Year: 2007
Subjects: subject: Operator Algebras (math.OA)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: Primary: 46L54, secondary: 52C17, 28A78, 94A17

description: Motivated by Voiculescu's liberation theory, we introduce the orbital free entropy $χ_orb$ for non-commutative self-adjoint random variables (also for "hyperfinite random multi-variables"). Besides its basic properties the relation of $χ_orb$ with the usual free entropy $χ$ is shown. Moreover, the dimension counterpart $δ_{0,orb}$ of $χ_orb$ is discussed, and we obtain the relation of $δ_{0,orb}$ with the original free entropy dimension $δ_0$ with applications to $δ_0$ itself.
description: 38 pages; Section 5 was largely improved and Section 6 was added
The ethical implications of a subjective model of risk asssessment in product safety cases
Creators: name: MacDonald, Christopher John
Publisher: name: University of British Columbia
Year: 2009

description: A number of authors from diverse fields have criticized, in recent years, the epistemic assumption that risk can be objectively determined. The impossibility of objectively identifying and quantifying risks poses obvious difficulties for those seeking to make reasonable decisions regarding risk. More interestingly from the point of view of moral philosophy, however, it becomes difficult to determine whether our activities subject others to unreasonable levels of risk. Product safety provides an interesting context within which to examine the implications of a subjective theory of risk assessment. It is a field which involves multiple stakeholder groups with a wide variety of interests and obligations. In this thesis, I first discuss criticisms which authors from several fields have levelled against the claim that risk assessment can be done objectively. I then examine the implications which a subjective model of risk assessment might have for interactions among stakeholders in product safety cases. I suggest that accepting such a model has a wide variety of implications, including among others discrediting models of hypothetical consent, limiting the value of certain criteria suggested by economists for decision making under uncertainty, and suggesting new standards for honesty in product labelling.
Ground state energy of the low density Hubbard model. An upper bound
Creators: name: Giuliani, Alessandro
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We derive an upper bound on the ground state energy of the three-dimensional (3D) repulsive Hubbard model on the cubic lattice agreeing in the low density limit with the known asymptotic expression of the ground state energy of the dilute Fermi gas in the continuum. As a corollary, we prove an old conjecture on the low density behavior of the 3D Hubbard model, i.e., that the total spin of the ground state vanishes as the density goes to zero.
description: 13 pages; Version accepted for publication on the Journal of Mathematical Physics; minor changes