cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
GaMnAs grown on (311) GaAs substrates: modified Mn incorporation and new magnetic anisotropies
Creators: name: Wang, K. Y.
name: Edmonds, K. W.
name: Zhao, L. X.
name: Sawicki, M.
name: Campion, R. P.
name: Gallagher, B. L.
name: Foxon, C. T.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report the results of a detailed study of the structural, magnetic and magnetotransport properties of as-grown and annealed Ga0.91Mn0.09As thin films grown on (311)A and (311)B GaAs substrates. The high Curie temperature and hole density of the (311)B material are comparable to those of GaMnAs grown on (001) GaAs under the same growth conditions, while they are much lower for the (311)A material. We find evidence that Mn incorporation is more efficient for (311)B than for (001) and significantly less efficient for (311)A which is consistent with the bonding on these surfaces. This indicates that growth on (311)B may be a route to increased Curie temperatures in GaMnAs. A biaxial magnetic anisotropy is observed for the (311) material with easy axes along the [010] and [001] out-of-plane directions. An additional uniaxial in-plane anisotropy is also observed with the easy axis along for the (311)A material, and along for the (311)B material. This new observation may be of importance for the resolution of the outstanding problem of the origin of uniaxial anisotropy in (001) GaMnAs.
description: 16 pages, 6 figures and 1 table. accepted by Phys. Rev. B
PLIOCENE ALLUVIAL TO MARINE DEPOSITS OF THE VAL D’ORCIA BASIN (NORTHERN APENNINES, ITALY): SEQUENCE STRATIGRAPHY AND BASIN ANALYSIS
Creators: name: GHINASSI, MASSIMILIANO
Publisher: name: Università degli Studi di Milano
Year: 2007

description: Since the Middle-Late Miocene, the Apennine chain was characterised by the development of several basins. These basins have been alternatively explained as extensional post-orogenic basins or syn-orogenic compressional basins. In this framework, the Pliocene depositional history of the Val d'Orcia Basin (Southern Tuscany) is described, based on a sequence stratigraphic approach. Three depositional sequences (Vd3a-c) have been recognized. The Vd3a sequence records marine ingression and subsequent relative sea-level highstand in a narrow W-E trending depression. Subsequent relative sea-level fluctuations led to a progressive basin widening and deposition of Vd3b and Vd3c sequences. Basin scale sedimentation was mainly controlled by relative sea-level changes, although accumulation of bioclastic deposits of the Vd3c sequence could have been influenced by climatic factors. Based on its wide bowl-shaped geometry, the Pliocene Val d'Orcia Basin has been interpreted as an inherited depression. This depression is thought to be originated by erosion at the Late Miocene-Early Pliocene transition.
description: Rivista italiana di Paleontologia e Stratigrafia, Vol 113, No 3
PALAEOENVIRONMENTAL EVOLUTION OF THE PLIO-PLEISTOCENE MONTE MARIO SUCCESSION (ROME, ITALY) INFERRED FROM OSTRACOD ASSEMBLAGES
Creators: name: FARANDA, COSTANZA
name: GLIOZZI, ELSA
name: MAZZINI, ILARIA
Publisher: name: Università degli Studi di Milano
Year: 2007

description: The whole "classical" Monte Mario succession has been recovered through the excavation of the Giovanni XXIII tunnel inside the city of Rome (Italy). The succession has been sampled from the Zanclean Monte Vaticano Fm. to the Lower Pleistocene Monte Mario Fm. Well-preserved and diversified ostracod faunas have been recovered and the ostracod assemblages have been studied using community structure analyses and statistical multivariate analyses. The Monte Vaticano Fm. has been referred to a bathyal marine environment (300-350 m of depth), the most represented genera being Krithe, Parakrithe, Bairdoppilata and Cytherella. The Monte Mario Fm. provided ostracod assemblages referable to littoral environments with Cimbaurila, Aurila, Costa, Carinocythereis, Leptocythere and Loxoconcha as dominant taxa. Within the Monte Mario Fm., three marine shallowing-up sequences have been recognised, the last two recording marginal marine conditions with shallow depths and variable salinity (dominant Cyprideis torosa). Two cold-water episodes have been recognised within the basal Monte Mario Fm. characterised by the occurrence of Arctica islandica and, within the upper level, by the presence of the northern guests Cytheropteron depressum, Bythocythere zetlandica, Paradoxostoma ensiforme and Paradoxostoma abbreviatum.
description: Rivista italiana di Paleontologia e Stratigrafia, Vol 113, No 3
Using Multiscale Molecular Dynamics Simulations to Obtain Insights into Pore Forming Toxin Mechanisms
Creators: name: Desikan, Rajat
name: Behera, Amit
name: Maiti, Prabal K.
name: Ayappa, K. Ganapathy
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Pore forming toxins (PFTs) are virulent proteins released by several species, including many strains of bacteria, to attack and kill host cells. In this article, we focus on the utility of molecular dynamics (MD) simulations and the molecular insights gleaned from these techniques on the pore forming pathways of PFTs. In addition to all-atom simulations which are widely used, coarse grained MARTINI models and structure based models have also been used to study PFTs. Here, the emphasis is on methods and techniques involved while setting up, monitoring, and evaluating properties from MD simulations of PFTs in a membrane environment. We draw from several case studies to illustrate how MD simulations have provided molecular insights into protein-protein and protein-lipid interactions, lipid dynamics, conformational transitions and structures of both the oligomeric intermediates and assembled pore structures.
description: Methods-focused book chapter on MD simulations of pore forming toxins (membrane proteins, responsible for bacterial virulence). 7 figures, 147 references, 41 pages
Στάσεις των αλλόγλωσσων μαθητών απέναντι στην κυπριακή κοινωνία υποδοχής και επιδόσεις στο μάθημα της ελληνικής γλώσσας. Η περίπτωση των αλλόγλωσσων μαθητών των σχολείων Δευτεροβάθμιας Εκπαίδευσης της επαρχίας Πάφου
Creators: name: Ευθυμίου, Φωτεινή Χαραλάμπους
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Στάσεις
Αλλόγλωσσοι μαθητές
Κοινωνία υποδοχής
Επιδόσεις
Μάθημα ελληνικής γλώσσας
Attitudes
Foreign language speaking students
Acceptance society
Performance
Lesson of the greek language

description: Σκοπός της διπλωματικής εργασίας είναι η ανίχνευση της σχέσης μεταξύ της στάσης των αλλόγλωσσων μαθητών απέναντι στην κοινωνία υποδοχής και της επίδοσής τους στο μάθημα που αφορά τη διδασκαλία της επίσημης γλώσσας της κοινωνίας υποδοχής. Τα αποτελέσματα της έρευνας έδειξαν ότι: Α) Οι αλλόγλωσσοι μαθητές που έχουν θετική στάση απέναντι στον εξωσχολικό κοινωνικό χώρο, πετυχαίνουν υψηλότερες επιδόσεις στο μάθημα της επίσημης γλώσσας της κοινωνίας υποδοχής, απ'ότι οι μαθητές των οποίων η στάση είναι αρνητική. Β) Οι αλλόγλωσσοι μαθητές που έχουν θετική στάση απέναντι στο σχολικό περιβάλλον, πετυχαίνουν υψηλότερες επιδόσεις στο μάθημα της επίσημης γλώσσας της κοινωνίας υποδοχής, απ'ότι οι μαθητές των οποίων η στάση είναι αρνητική.
description: The purpose of the dissertation is to identify the relation between the attitude of the foreign language speaking students toward the acceptance society and their performance in the lesson of the official language of the acceptance society. The results of the project revealud the following: A) The foreign language students who have a positive attitude toward the acceptance society; have better performance in the lesson of the official language of the acceptance society, than students who have a negative attitude. B) The foreign language students who have a positive attitude toward the school environment; have better performance in the lesson of the official language of the acceptance society, than students who have a negative attitude.
Recent Progress in Synthesis and Application of Nanosized and Hierarchical Mordenite—A Short Review
Creators: name: Kalvachev, Yuri
name: Todorova, Totka
name: Popov, Cyril
Publisher: name: Universität Kassel
Year: 2021
Subjects: subject: zeolite
subject: synthesis
subject: nanosized mordenite
subject: hierarchical material
subject: 540
subject: Zeolith
subject: Chemische Synthese
subject: Mordenit
subject: Material

description: Gefördert durch den Publikationsfonds der Universität Kassel
REINTERPRETATION OF THE LATE PLEISTOCENE INGARANO CAVE DEPOSIT BASED ON THE FOSSIL BIRD ASSOCIATION (APULIA, SOUTH-EASTERN ITALY)
Creators: name: BEDETTI, CLAUDIA
name: PAVIA, MARCO
Publisher: name: Università degli Studi di Milano
Year: 2007

description: We present a study of Late Pleistocene fossil bird remains from Ingarano (Apulia, SE Italy), based on the revision of previously published material and the study of unpublished fossils bones. New field observations make it possible to simplify the stratigraphy of the deposit compared to previous work. The systematic study of the fossil bird bones revealed the presence of 15 taxa, including two hypothetical ones: Circus aeruginosus, Buteo rufinus, Aquila chrysaëtos, Falco columbarius, Falco cherrug, Alectoris graeca, Perdix perdix, Columba livia, Otus scops, Nyctea scandiaca, Nyctea scandiaca vel Bubo bubo, Athene noctua, Pyrrhocorax graculus, Pyrrhocorax pyrrhocorax, Corvus corone, Corvus corone vel Corvus frugilegus, Corvus corax. Our detailed study also helps improve the taphonomical interpretation of the deposit: the remains from the lower layers were accumulated after mammalian predator activity and were transported over short distances, while the ones from the upper layers show sings of intense transport, such as fractures and surface abrasion. Two different bird assemblages were recognized, respectively from the lowermost and the upper layers of the clastic succession exposed in the Ingarano deposit; this difference is also confirmed by the fossil mammal remains. The systematic study makes it possible to make palaeoenvironmental and palaeoclimatic reconstructions: both assemblages indicate open environments, and the taxa of the lower layers indicate the presence of woods and wetlands with colder characteristics, while birds of the upper layers indicate drier and warmer conditions. This analysis, and the dating established through geochemical analyses and study of lithic artefacts, lead us to date the formation of the Ingarano deposit to the Late Pleistocene, in particular to the MIS 3. The presence of a layer dated to the MIS 2 at the base of the succession indicated in previous works cannot be confirmed.
description: Rivista italiana di Paleontologia e Stratigrafia, Vol 113, No 3
[Rezension von: Božić, Jure Z., Die Autokephalieerklärung der Makedonischen Orthodoxen Kirche]
Creators: name: Božić, Jure Z.
name: Müller, Andreas
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 45 Nr. 2 (1996): Ökumenische Rundschau, Band 45, Heft 2
Wide Field Spectral Imaging with Shifted Excitation Raman Difference Spectroscopy Using the Nod and Shuffle Technique
Creators: name: Korinth, Florian
name: Schmälzlin, Elmar
name: Stiebing, Clara
name: Urrutia, Tanya
name: Micheva, Genoveva
name: Sandin, Christer
name: Müller, André
name: Maiwald, Martin
name: Sumpf, Bernd
name: Krafft, Christoph
name: Tränkle, Günther
name: Roth, Martin M.
name: Popp, Jürgen
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Applied Physics (physics.app-ph)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Wide field Raman imaging using the integral field spectroscopy approach was used as a fast, one shot imaging method for the simultaneous collection of all spectra composing a Raman image. For the suppression of autofluorescence and background signals such as room light, shifted excitation Raman difference spectroscopy (SERDS) was applied to remove background artifacts in Raman spectra. To reduce acquisition times in wide field SERDS imaging, we adapted the nod and shuffle technique from astrophysics and implemented it into a wide field SERDS imaging setup. In our adapted version, the nod corresponds to the change in excitation wavelength, whereas the shuffle corresponds to the shifting of charges up and down on a Charge-Coupled Device (CCD) chip synchronous to the change in excitation wavelength. We coupled this improved wide field SERDS imaging setup to diode lasers with 784.4/785.5 and 457.7/458.9 nm excitation and applied it to samples such as paracetamol and aspirin tablets, polystyrene and polymethyl methacrylate beads, as well as pork meat using multiple accumulations with acquisition times in the range of 50 to 200 ms. The results tackle two main challenges of SERDS imaging: gradual photobleaching changes the autofluorescence background, and multiple readouts of CCD detector prolong the acquisition time.
description: Accepted and Published by "Sensors" Journal, 19 pages, 8 figures
THE TYRRHENIAN SECTION OF SAN GIOVANNI DI SINIS (SARDINIA):STRATIGRAPHIC RECORD OF AN IRREGULAR SINGLE HIGH STAND
Creators: name: LECCA, LUCIANO
name: CARBONI, SALVATORE
Publisher: name: Università degli Studi di Milano
Year: 2007

description: A new analysis of the most representative Upper Pleistocene (Tyrrhenian, MIS 5e) section of San Giovanni di Sinis (Oristano, Sardinia) has provided a more detailed genetic stratigraphy of a low wave energy beach and temperate lagoon up to emerged peri-lagoonal facies deposits. These peri-lagoonal facies contain remains of fossil vertebrates, which, though few and fragmentary, bear witness to an at least temporary freshwater palaeoenvironment and the presence of deers and terrapins. Besides, the stratigraphy of this outcrop shows shoreface-backshore sandstones overlaying an erosion surface cut on the vertebrate-bearing layers. Facies analysis and sequence stratigraphy of the succession have provided support to a new eustatic interpretation significance. In fact, there appears to be evidence of one irregular single eustatic highstand, rather than two eustatic peaks as previously believed. The facies evolution and the local stratigraphic disconformities are interpreted as being associated with a lateral shift of the depositional environment within the same system formed during the MIS 5e sea level variations. As sea water level continued to rise so an erosional unconformity, caused by wave ravinement, formed between the low wave energy beach-lagoon sequence and the successive wave dominated beach facies sequence. This interpretation is supported by comparison with other sections of the Tyrrhenian in western Sardinia. The maximum sea level attained during the Tyrrhenian stage is a clear indication of a warm-temperate climate which can be correlated to the well known orbital interglacial configuration when the eustatic signal of Greenland's ice sheet melting occurred.

SHORT NOTES
description: Rivista italiana di Paleontologia e Stratigrafia, Vol 113, No 3
Dark solitons in external potentials
Creators: name: Pelinovsky, Dmitry E.
name: Kevrekidis, Panayotis G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We consider the persistence and stability of dark solitons in the Gross-Pitaevskii (GP) equation with a small decaying potential. We show that families of black solitons with zero speed originate from extremal points of an appropriately defined effective potential and persist for sufficiently small strength of the potential. We prove that families at the maximum points are generally unstable with exactly one real positive eigenvalue, while families at the minimum points are generally unstable with exactly two complex-conjugated eigenvalues with positive real part. This mechanism of destabilization of the black soliton is confirmed in numerical approximations of eigenvalues of the linearized GP equation and full numerical simulations of the nonlinear GP equation with cubic nonlinearity. We illustrate the monotonic instability associated with the real eigenvalues and the oscillatory instability associated with the complex eigenvalues and compare the numerical results of evolution of a dark soliton with the predictions of Newton's particle law for its position.
description: 39 pages, 10 figures
Γάμος-Αγαμία. Η θεολογική ζεύξη των αντιθέτων στα ασκητικά συγγράμματα του Αγίου Γρηγορίου του Παλαμά
Creators: name: Αγγελοπούλου, Αγγελική Ηλία
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Γάμος
Αγαμία
Ησυχασμός
Κόσμος
Νέκρωση
Πένθος
Marriage
Virginity
Quetism
Monachism
Death
Life

description: Η αγαμία προβάλλεται από τον Αγιο Γρηγόριο τον Παλαμά ως ο κατεξοχήν γάμος, ο όντως γάμος που συνάπτει ο χριστιανός με το Θεό εν Αγίω Πνεύματι. Από την άλλη πλευρά η αληθινή παρθενία δεν περιορίζεται μόνο στη σωματική άσκηση ή στην αποφυγή του σωματικού γάμου αλλά και στην αποφυγή της κατά κόσμου συναναστροφής. Ο άγιος Πατέρας δε μειώνει την αξία του γάμου. ΄Αν ο γάμος ήταν κακός τότε η παρθενία θα έπρεπε να είναι υποχρεωτική και να μην εκλαμβάνεται ως ιδαίτερη χαρισματική κατάσταση! Σημασία έχει ο εσχατολογικός χαρακτήρας της οποίας αγαπητικής ένωσης επιλέξει ο χριστιανός. Την αγιότητα δεν την εξασφαλίζει η κλήση αλλά η άσκηση και η μίμηση του Χριστού. Συνεπώς, ο παρθενικός και ο έγγαμος βίος, παρότι αντιτίθενται διαλεκτικά ωστόσο βρίσκονται και σε σύνθεση και ζέυξη θεολογική. Η να θεωρηθεί αντίθεση ή διαστολή. Πρόκειται κυρίως για μετάθεση επιπέδου.
description: Real marriage according to Saint Gregory Palamas, is the marriage with God with happens only with help from the Holy Spirit. This is quite difficult to happen even if a christian selects marriage or virginity as a way of living and fighting against his human passions. Humans, body and soul, can reach God, from now and become saints and this is a common target for both married and monarchs.
NEW DESCRIPTION OF THE ROTALIPORID SPECIES BROTZENI AND GLOBOTRUNCANOIDES SIGAL, 1948 BASED ON RE-EXAMINATION OF TYPE MATERIAL
Creators: name: CARON, MICHELE
name: PREMOLI SILVA, ISABELLA
Publisher: name: Università degli Studi di Milano
Year: 2007

description: This short notes deals with the re-description and re-illustration of the holotypes of Thalmanninella brotzeni Sigal, 1948 and Rotalipora globotruncanoides Sigal, 1948, from Sidi Aissa, Algeria, middle Cenomanian. Both species are attributed to the genus Thalmanninella.
description: Rivista italiana di Paleontologia e Stratigrafia, Vol 113, No 3
Compact Sum-Over-States Expression without Dipolar Terms for Calculating Nonlinear Susceptibilities
Creators: name: Kuzyk, Mark G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Optics (physics.optics)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Using sum rules, the dipolar terms can be eliminated from the commonly-used sum-over-states (SOS) expression for nonlinear susceptibilities. This new dipole-free expression is more compact, converges to the same results as the common SOS equation, and is more appropriate for analyzing certain systems such as octupolar molecules. The dipole-free theory can be used as a tool for analyzing the uncertainties in quantum calculations of susceptibilities, can be applied to a broader set of quantum systems in the three-level model where the standard SOS expression fails, and more naturally leads to fundamental limits of the nonlinear susceptibilities.
description: 6 pages and 4 figures Paper now in print
Ευθύνη κρατών από εξωεδαφικές παραβιάσεις ανθρωπίνων δικαιωμάτων
Creators: name: Αθανασιάδης, Βασίλειος Θεοχάρη
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Εξωεδαφικότητα
Κρατική ευθύνη
Ανθρώπινα δικαιώματα
Extraterritoriality
State responsibility
Human rights

description: Μετά από μια σύντομη παρουσίαση των βασικών νομικών βάσεων της εξωεδαφικής εφαρμογής του Συμβατικού Δικαίου Ανθρωπίνων Δικαιωμάτων η εργασία επικεντρώνεται στη σχετικών νομολογία των τεσσάρων βασικών Συμβάσεων Προστασίας Ανθρωπίνων Δικαιωμάτων και τα κύρια σημεία της όλης προβληματικής, δηλαδή την έννοια της δικαιοδοσίας σε αυτού του είδους τις συμβάσεις, τον περιφερειακό χαρακτήρα ορισμένων Συμβάσεων Προστασίας Ανθρωπίνων Δικαιωμάτων αλλά και τη σχέση του Δικαίου Ανθρωπίνων Δικαιωμάτων με το Διεθνές Ανθρωπιστικό Δίκαιο. Το ζήτημα της εξωεδαφικότητας των συμβατικών υποχρεώσεων προστασία των Δικαιωμάτων του Ανθρώπου δεν εξετάζεται απομονωμένα αλλά στο ευρύτερο πλαίσιο της Κρατικής Ευθύνης στο Δημόσιο Διεθνές Δίκαιο. Στόχος είναι να καταδειχθεί ότι αντίθετα με τη χωρική διάσταση που δίνουν στην έννοια της δικαιοδοσίας ορισμένα διεθνή δικαιοδοτικά όργανα, η ύπαρξη της δικαιοδοσίας θα πρέπει να εξετάζεται σε συνάρτηση με το πραγματικό γεγονός της παραβίασης.
description: After a brief presentation of the main legal basis of the extraterritorial application of Human Rights Treaty Law this paper focuses to the relevant jurisprudence of the four main Human Rights Conventions and the main points of the relevant discussion, that is the notion of jurisdiction in these conventions, the regional character of some human rights Conventions and the relationship of Human Rights Law with International Humanitarian Law. The issue of the extraterritoriality of human rights obligations under treaty law is not seen solely, but it is treated in the broader frame of State Responsibility in Public International Law. The effort is to show that contrary to the spatial dimension given to the notion of jurisdiction by some international judiciary organs, the existence of jurisdiction should be judged in relation to the actual facts of the violation.
Seedling ecology of Garry oaks in British Columbia and dispersal of Garry oak acorns by Steller’s jays
Creators: name: Fuchs, Marilyn Ann
Publisher: name: University of British Columbia
Year: 2009

description: Garry oak (Quercus garryand) ecosystems are endangered in southern British Columbia and their management requires approaches that ensure adequate oak regeneration. Garry oak acorns are dispersed in B.C. primarily by Steller's Jays (Cyanocitta stelleri) and therefore regeneration must be considered within the context of where and how acorns are dispersed by jays. I planted acorns at different depths and in different habitats to examine factors influencing survival of acorns and seedlings. Depending on habitat type, predators removed 53-100 % of acorns that were planted on the surface but 10-92 % of acorns buried in ground cover or soil. Predation on buried acorns was extremely high in all habitats with sparse herb, dense shrub, and moderate to high tree cover. Of the acorns that were not predated, > 83 % of buried acorns produced seedlings, but, perhaps because of desiccation, only < 60% of acorns on the surface produced seedlings in most habitats. In most habitats, > 65 % of first-year seedlings survived to their second year. Some habitats that had high seedling emergence had relatively low seedling survival and vice versa. Many seedlings died from desiccation in habitats with thin soil on a south-facing slope. I observed caching of acorns by Steller's Jays to investigate the role of the jays in dispersal of Garry oaks. Steller's Jays cached acorns between a few centimetres to at least 600 m from harvesting locations, and probably transported some acorns more than 1 km. Almost all cached acorns were hidden within ground cover or soil. Steller's Jays preferred to cache acorns in habitats with extensive tree and shrub cover but sparse herb cover. Jays cached approximately one half of their acorns in these habitats, where seedling establishment is low because of high rates of acorn predation and sapling recruitment is likely poor because of shade from dense trees and shrubs. However, half of their acorns were cached in other habitats, some of which provide conditions favourable for oak regeneration. Conservation of Garry oak ecosystems in B.C. must include retention of ecological processes and management at both the stand and landscape levels.
Higher Spin Fields in Siegel Space, Currents and Theta Functions
Creators: name: Gelfond, O. A.
name: Vasiliev, M. A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Differential Geometry (math.DG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Dynamics of four-dimensional massless fields of all spins is formulated in the Siegel space of complex $4\times 4$ symmetric matrices. It is shown that the unfolded equations of free massless fields, that have a form of multidimensional Schrodinger equations, naturally distinguish between positive- and negative-frequency solutions of relativistic field equations, i.e. particles and antiparticles. Multidimensional Riemann theta functions are shown to solve massless field equations in the Siegel space. We establish the correspondence between conserved higher-spin currents in four-dimensional Minkowski space and those in the ten-dimensional matrix space. It is shown that global symmetry parameters of the current in the matrix space should be singular to reproduce a nonzero current in Minkowski space. The $\D$-function integral evolution formulae for 4d massless fields in the Fock-Siegel space are obtained. The generalization of the proposed scheme to higher dimensions and systems of higher ranks is considered.
description: LaTeX, 38 pages, v.3: clarifications, acknowledgements and references added, typos corrected, v.4: more comments and references added, typos corrected, the version to appear in JHEP
Re-transcription of unpublished Whilkut texts
Creators: name: Parker, Verdena
name: Lee-Wynant, Tyler
name: Spence, Justin
name: Parker, Otis
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: hup

description: Audio file VP-170120-04: Re-transcription and translation of Whilkut texts transcribed by P.E. Goddard, American Philosophical Society Na20j.1, notebook #1, pp. 62-68.
Spectral characterisation of 14 V-type candidate asteroids from the MOVIS catalogue
Creators: name: Matlovič, Pavol
name: de Leon, Julia
name: Medeiros, Hissa
name: Popescu, Marcel
name: Rizos, Juan Luis
name: Mansour, Jad-Alexandru
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Most of the currently known basaltic (V-type) asteroids are believed to be past or present members of the Vesta dynamical family. The rising discoveries of V-type asteroids that are not dynamically linked to the Vesta family suggest that a number of major basaltic bodies may have been present during the early stages of the solar system. In this work, we aim to provide a spectral analysis of 14 V-type candidates of various dynamical types, selected from the Moving Objects from VISTA Survey (MOVIS) catalogue. The computed visible and near-infrared (NIR) spectral parameters are used to investigate evidence of space-weathering or mineralogical differences from the expected basaltic composition. Based on the analysis of their visible spectra, we confirm 11 new V-type asteroids: six low-i asteroids - (3188) Jekabsons, (3331) Kvistaberg, (4693) Drummond, (7223) Dolgorukij, (9007) James Bond, and (29733) 1999 BA4; along with four inner-other asteroids - (5524) Lecacheux, (19983) 1990 DW, (51742) 2001 KE$_{55}$, and (90023) 2003 BD$_{13}$; as well as one fugitive - (2275) Cuitlahuac. Additionally, we analysed three peculiar outer main belt candidates based on their visible + NIR spectra. We confirm the diogenite-like composition of (2452) Lyot. The spectrum of asteroid (7302) is inconsistent with a basaltic composition and likely reflects an S-type body. The spectrum of (14390) 1990 QP$_{10}$ shows unique features that suggest a peculiar, unclassified composition. Overall, our results demonstrate the efficiency of the MOVIS catalogue in identifying V-type objects, with a success rate of over 85\%. The identification of V-types in the inner main-belt is more likely due to the presence of the Vesta family and other nearby asteroids that had escaped from the family. In the middle and outer main belt, where the amount of data is more limited, the proportion of false positives increases.
Dispersion measure variability for 36 millisecond pulsars at 150MHz with LOFAR
Creators: name: Donner, J. Y.
name: Verbiest, J. P. W.
name: Tiburzi, C.
name: Osłowski, S.
name: Künsemöller, J.
name: Nielsen, A. -S. Bak
name: Grießmeier, J. -M.
name: Serylak, M.
name: Kramer, M.
name: Anderson, J. M.
name: Wucknitz, O.
name: Keane, E.
name: Kondratiev, V.
name: Sobey, C.
name: McKee, J. W.
name: Bilous, A. V.
name: Breton, R. P.
name: Brüggen, M.
name: Ciardi, B.
name: Hoeft, M.
name: van Leeuwen, J.
name: Vocks, C.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Radio pulses from pulsars are affected by plasma dispersion, which results in a frequency-dependent propagation delay. Variations in the magnitude of this effect lead to an additional source of red noise in pulsar timing experiments, including pulsar timing arrays that aim to detect nanohertz gravitational waves. We aim to quantify the time-variable dispersion with much improved precision and characterise the spectrum of these variations. We use the pulsar timing technique to obtain highly precise dispersion measure (DM) time series. Our dataset consists of observations of 36 millisecond pulsars, which were observed for up to 7.1 years with the LOFAR telescope at a centre frequency of ~150 MHz. Seventeen of these sources were observed with a weekly cadence, while the rest were observed at monthly cadence. We achieve a median DM precision of the order of 10^-5 cm^-3 pc for a significant fraction of our sources. We detect significant variations of the DM in all pulsars with a median DM uncertainty of less than 2x10^-4 cm^-3 pc. The noise contribution to pulsar timing experiments at higher frequencies is calculated to be at a level of 0.1-10 us at 1.4 GHz over a timespan of a few years, which is in many cases larger than the typical timing precision of 1 us or better that PTAs aim for. We found no evidence for a dependence of DM on radio frequency for any of the sources in our sample. The DM time series we obtained using LOFAR could in principle be used to correct higher-frequency data for the variations of the dispersive delay. However, there is currently the practical restriction that pulsars tend to provide either highly precise times of arrival (ToAs) at 1.4 GHz or a high DM precision at low frequencies, but not both, due to spectral properties. Combining the higher-frequency ToAs with those from LOFAR to measure the infinite-frequency ToA and DM would improve the result.
description: 16 pages, 8 figures, 2 tables
Task 46 Erosion of Wind Turbine Blades
Creators: name: Prieto, Raul
name: Hasager, Charlotte
name: Pryor, Sara
name: Veraart, Marijn
name: Maniaci, David
name: Bech, Jakob Ilsted
name: Rahimi, Maral
name: López, Fernando Sánchez
name: Holst, Bodil
Publisher: name: Zenodo
Year: 2021
Subjects: wind
wind power
wind turbines

description: This presentation was part of the EERA JP Wind SP4 Aerodynamics Loads & Control – FALCON 30 50 Workshop (February 25, 2021).
Universal Conductance and Conductivity at Critical Points in Integer Quantum Hall Systems
Creators: name: Schweitzer, L.
name: Markoš, P.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The sample averaged longitudinal two-terminal conductance and the respective Kubo-conductivity are calculated at quantum critical points in the integer quantum Hall regime. In the limit of large system size, both transport quantities are found to be the same within numerical uncertainty in the lowest Landau band, $0.60\pm 0.02 e^2/h$ and $0.58\pm 0.03 e^2/h$, respectively. In the 2nd lowest Landau band, a critical conductance $0.61\pm 0.03 e^2/h$ is obtained which indeed supports the notion of universality. However, these numbers are significantly at variance with the hitherto commonly believed value $1/2 e^2/h$. We argue that this difference is due to the multifractal structure of critical wavefunctions, a property that should generically show up in the conductance at quantum critical points.
description: 4 pages, 3 figures
Chandra Observations of Gravitational Lenses B1600+434 and B1608+656
Creators: name: Dai, Xinyu
name: Kochanek, Christopher S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We observed B1600+434 and B1608+656 with CXO/ACIS, detecting both quasar images in B1600+434 and three of four images in B1608+656. We did not detect significant X-ray emission from nearby galaxy groups or clusters associated with each lens galaxy. The upper limits on the X-ray luminosity of any cluster within 4 arcmin of each lens and at each lens redshift are of ~2\times10^{42} and ~6\times10^{42} erg/s for B1600+434 and B1608+656, respectively. The radio-loud source quasars have power-law photon indices of Γ=1.9\pm0.2 and Γ=1.4\pm0.3 and X-ray luminosities of 1.4^{+0.2}_{-0.1}\times10^{45} and 2.9^{+0.7}_{-0.4}\times10^{44} erg/s for B1600+434 and B1608+656, respectively before correcting for the magnification. We detected a differential absorption column density of ΔN_H ~ 3\times10^{21} cm^{-2} between the two images of B1600+434, roughly consistent with expectations from differential extinction estimates of ΔE(B-V)=0.1 mag and a standard dust-to-gas ratio. The differential absorption observed in gravitational lenses may serve as an important probe to study the gas content in high redshift galaxies since it can separate the absorbing column originating from the lens galaxy and those intrinsic to quasars. We also detected 157 serendipitous X-ray sources in the two Chandra fields and identified the brighter optical counterparts using the SDSS and DPOSS surveys.
description: 24 pages, including 3 figures and 5 tables, accepted by ApJ
Products of polymatroids with the strong exchange property
Creators: name: Nicklasson, Lisa
Publisher: name: arXiv
Year: 2021
Subjects: subject: Commutative Algebra (math.AC)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 13F65, 13C70, 16S37

description: It was conjectured by White in 1980 that the toric ring associated to a matroid is defined by symmetric exchange relations. This conjecture was extended to discrete polymatroids by Herzog and Hibi, and they prove that the conjecture holds for polymatroids with the so called strong exchange property. In this paper we generalize their result to polymatroids that are products of polymatroids with the strong exchange property. This also extends a result by Conca on transversal polymatroids.
description: Errors in previous version were corrected
Topological insulators based on HgTe
Creators: name: Kvon, Z. D.
name: Kozlov, D. A.
name: Olshanetsky, E. B.
name: Gusev, G. M.
name: Mikhailov, N. N.
name: Dvoretsky, S. A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The most interesting experimental results obtained in studies of 2D and 3D topological insulators (TIs) based on HgTe quantum wells and films are reviewed. In the case of 2D TIs, these include the observation of nonlocal ballistic and diffusion transport, the magnetic breakdown of 2D TIs, and an anomalous temperature dependence of edge-channel resistance. In 3D TIs, a record-setting high mobility of surface two-dimensional Dirac fermions (DFs) has been attained. This enabled determining all the main TI parameters (the bulk gap and the density of DFs on both of its surfaces) and provided information on the phase of the Shubnikov - de Haas oscillations of DFs, which indicates the rigid topological coupling between the fermion spin and momentum. Prospects for further research are discussed in the conclusion.
description: 18 pages, 24 figures
Fragmentation and Evolution of Molecular Clouds. I: Algorithm and First Results
Creators: name: Martel, Hugo
name: Evans, Neal J.
name: Shapiro, Paul R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a series of simulations of the fragmentation of a molecular cloud, leading to the formation of a cluster of protostellar cores. The purpose of these simulations is to address a specific numerical problem called artificial fragmentation, that plagues SPH simulations of cloud fragmentation. We argue that this is a serious problem that needs to be addressed, and that the only reasonable and practical way to address it is to use a relatively new technique called particle splitting. Our largest simulation has an effective resolution of 256^3 particles (much higher than most previous SPH simulations of cloud fragmentation) and results in the formation of a dense cluster containing ~3000 protostellar cores. It is the first simulation of this kind to properly resolve the Jeans mass throughout the entire system, at all times, thus preventing artificial fragmentation.
description: 47 pages, 15 figures (2 grayscale, one color), ApJ Suppl, in press
Cooking up the ’Calaloo’ nation: gender, race and national cuisine in the imagining of Trinidad and Tobago
Creators: name: Naidu, Surya
Publisher: name: University of British Columbia
Year: 2009

description: This thesis discusses the formation of a national cuisine in post-colonial Trinidad and Tobago. Tracing national identity through cultural and political manipulations of food by elites and ordinary citizens, I have attempted to build a context for understanding the nature of nationbuilding, as well as the specific impact of race relations on conceptions of 'nation'. I conclude that the 'nation' is imagined by elites in accordance with international standards of nationhood, while its everyday construction is derived from a less formal pattern. In fact, the average citizen's idea about nationhood is produced out of a sense of community and divisions between communities set in the colonial period. While the government, major industries, and commercial interests attempt to refashion the previously colonized space of the twin islands into a productive and internationally acceptable terrain, local interest groups defend practices that have grown up in indigenous historical contexts. The 'Black Power' movement clearly articulates this entrenchment of the 'local' culture and economy in its critique of the 'progress' driven elite. Furthermore, women and the Indian minority population resist official representations of the nation of Trinidad and Tobago, denying the validity of the 'calaloo' nation. Not wishing to be a part of a mixed stew that in effect negated their historical struggles, both women and Indians erect boundaries and demarcate the limits of the nation. The Indian woman sits uncomfortably on the threshold of nationhood, acting as a border marker for both her community and for the outer limits of the nation. As an antiquated figure, the Indian woman is cherished by both Black and Indian men as a remnant of the colonial past. Once 'creolized' or assimilated into the mainstream culture, the Indian woman poses a threat to the purity of the Indian community, as well as the black or Creole community. The enforced purity of the Indian woman's cuisine opposes the 'calaloo' nation cooked up by the elite of Trinidad and Tobago, and surfaces 'race' and 'gender' tensions that stir within the 'calaloo' pot.
A catastrophic charge density wave in BaFe$_2$Al$_9$
Creators: name: Meier, William R.
name: Chakoumakos, Bryan C.
name: Okamoto, Satoshi
name: McGuire, Michael A.
name: Hermann, Raphaël P.
name: Samolyuk, German D.
name: Gao, Shang
name: Zhang, Qiang
name: Stone, Matthew B.
name: Christianson, Andrew D.
name: Sales, Brian C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Charge density waves (CDW) are modulations of the electron density and the atomic lattice that develop in some crystalline materials at low temperature. We report an unusual example of a CDW in BaFe$_2$Al$_9$ below 100 K. In contrast to the canonical CDW phase transition, temperature dependent physical properties of single crystals reveal a first-order phase transition. This is accompanied by a discontinuous change in the size of the crystal lattice. In fact, this large strain has catastrophic consequences for the crystals causing them to physically shatter. Single crystal x-ray diffraction reveals super-lattice peaks in the low-temperature phase signaling the development of a CDW lattice modulation. No similar low-temperature transitions are observed in BaCo$_2$Al$_9$. Electronic structure calculations provide one hint to the different behavior of these two compounds; the d-orbital states in the Fe compound are not completely filled. Iron compounds are renowned for their magnetism and partly filled d-states play a key role. It is therefore surprising that BaFe$_2$Al$_9$ develops a structural modulation instead at low temperature instead of magnetic order.
description: 34 pages, 8 figures Edits to text as well as figures 2 and 5. Added neutron diffraction (Fig. 6)
Summary of the "Diffraction & Vector Mesons" working group at DIS05
Creators: name: Janssen, X.
name: Ruspa, M.
name: Khoze, V. A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We survey the contributions presented in the working group "Diffraction & Vector Mesons" at the XIII International Workshop on Deep Inelastic Scattering (http://www.hep.wisc.edu/dis05)
description: 21 pages, 27 figures, DIS05 conference proceedings
The Southern Wide-Field Gamma-ray Observatory (SWGO)
Creators: name: de Almeida, Ulisses Barres
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The scientific potential of a wide field-of-view, and very-high duty cycle, ground-based gamma-ray detector has been demonstrated by the current generation of instruments, such as HAWC and ARGO, and will be further extended in the Northern Hemisphere by LHAASO. Nevertheless, no such instrument exists in the Southern Hemisphere yet, where a great potential lies uncovered for the mapping of Galactic large scale emission as well as providing access to the full sky for transient and variable multi-wavelength and multi-messenger phenomena. Access to the Galactic Centre and complementarity with the CTA-South are other key motivations for such a gamma-ray observatory in the South. There is also significant potential for cosmic ray studies, including investigation of cosmic-ray anisotropy. In this contribution I will present the motivations and the concept of the future Southern Wide-Field Gamma-ray Observatory (SWGO), now formally established as an international Collaboration and currently in R\&D phase. I will also outline its scientific objectives.
description: 6 pages, 4 figures, 1 table; Proceedings of the IWARA 2020 Virtual Conference, September 2020; To be published in Astronomisch Nachrichten
Rehabilitation of Kileleshwa Roads
Creators: name: Kimathi, Brenda Kajuju
Publisher: name: Zenodo
Year: 2022
Subjects: Kileleshwa

description: Nairobi has been rapidly urbanizing ever since the independence years. The increase in the urban population has brought about numerous challenges such as overcrowding, pollution, densification of existing developments, urban sprawl and congested infrastructure. These challenges have put enormous pressure on the government to create working systems that can accommodate the ever-growing urban developmental needs. Major efforts have been directed towards rehabilitation of existing buildings, roads and public spaces in order to mitigate these problems.Kileleshwa is one of the areas experiencing intense densification as it transformed from a low density high-income area, to a high-density middle-income area. This has made the existing infrastructural services to be heavily strained as they have not been expanded to match the increasing density standards. Also, the property values in Kileleshwa have skyrocketed putting intense pressure on the government and local authorities to enhance existing infrastructure standards so that investors can recoup their investments. Therefore, the main objective of this project is rehabilitation and upgradation of existing Kileleshwa roads, in order to accommodate additional traffic loading brought about by the expanded vertical and horizontal housing densification.
THE HORN-CORE OF HEMIBOS GALERIANUS FROM PONTE MILVIO, ROME (ITALY)
Creators: name: MARTINEZ-NAVARRO, BIENVENIDO
name: RITA PALOMBO, MARIA
Publisher: name: Università degli Studi di Milano
Year: 2007

description: Anatomical reinterpretation of a horn-core from the Ponte Milvio site, previously ascribed to Bubalus murrensis, suggests that it belongs to the species Hemibos galerianus, originally described from the type locality of the Galerian Land Mammal Age (LMA). This is the second record in the Italian Pleistocene of this rare Bovini species, derived from the genus Hemibos of Indian origin.
description: Rivista italiana di Paleontologia e Stratigrafia, Vol 113, No 3
A Preliminary VLBA Distance to the Core of Ophiuchus, with an Accuracy of 4%
Creators: name: Loinard, Laurent
name: Torres, Rosa M.
name: Mioduszewski, Amy
name: Rodriguez, Luis F.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The non-thermal 3.6 cm radio continuum emission from the young stars S1 and DoAr21 in the core of Ophiuchus, has been observed with the Very Long Baseline Array (VLBA) at 6 and 7 epochs, respectively, between June 2005 and August 2006. The typical separation between successive observations was 2 to 3 months. Thanks to the remarkably accurate astrometry delivered by the VLBA, the trajectory described by both stars on the plane of the sky could be traced very precisely, and modeled as the superposition of their trigonometric parallax and a uniform proper motion. The best fits yield distances to S1 and DoAr21 of 116.9$^{+7.2}_{-6.4}$ pc and 121.9$^{+5.8}_{-5.3}$ pc, respectively. Combining these results, we estimate the mean distance to the Ophiuchus core to be 120.0$^{+4.5}_{-4.2}$ pc, a value consistent with several recent indirect determinations, but with a significantly improved accuracy of 4%. Both S1 and DoAr21 happen to be members of tight binary systems, but our observations are not frequent enough to properly derive the corresponding orbital parameters. This could be done with additional data, however, and would result in a significantly improved accuracy on the distance determination.
description: Changes to title to comply with ApJL style. Paper no published as ApJ 675, L29, 2008