cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A HARPS-N mass for the elusive Kepler-37d: a case study in disentangling stellar activity and planetary signals
Creators: name: Rajpaul, V. M.
name: Buchhave, L. A.
name: Lacedelli, G.
name: Rice, K.
name: Mortier, A.
name: Malavolta, L.
name: Aigrain, S.
name: Borsato, L.
name: Mayo, A. W.
name: Charbonneau, D.
name: Damasso, M.
name: Dumusque, X.
name: Ghedina, A.
name: Latham, D. W.
name: López-Morales, M.
name: Magazzù, A.
name: Micela, G.
name: Molinari, E.
name: Pepe, F.
name: Piotto, G.
name: Poretti, E.
name: Rowther, S.
name: Sozzetti, A.
name: Udry, S.
name: Watson, C. A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: To date, only 18 exoplanets with radial velocity (RV) semi-amplitudes $<2$ m/s have had their masses directly constrained. The biggest obstacle to RV detection of such exoplanets is variability intrinsic to stars themselves, e.g. nuisance signals arising from surface magnetic activity such as rotating spots and plages, which can drown out or even mimic planetary RV signals. We use Kepler-37 - known to host three transiting planets, one of which, Kepler-37d, should be on the cusp of RV detectability with modern spectrographs - as a case study in disentangling planetary and stellar activity signals. We show how two different statistical techniques - one seeking to identify activity signals in stellar spectra, and another to model activity signals in extracted RVs and activity indicators - can enable detection of the hitherto elusive Kepler-37d. Moreover, we show that these two approaches can be complementary, and in combination, facilitate a definitive detection and precise characterisation of Kepler-37d. Its RV semi-amplitude of $1.22\pm0.31$ m/s (mass $5.4\pm1.4$ $M_\oplus$) is formally consistent with TOI-178b's $1.05^{+0.25}_{-0.30}$ m/s, the latter being the smallest detected RV signal of any transiting planet to date, though dynamical simulations suggest Kepler-37d's mass may be on the lower end of our $1σ$ credible interval. Its consequent density is consistent with either a water-world or that of a gaseous envelope ($\sim0.4\%$ by mass) surrounding a rocky core. Based on RV modelling and a re-analysis of Kepler-37 TTVs, we also argue that the putative (non-transiting) planet Kepler-37e should probably be stripped of its 'confirmed' status.
description: Accepted for publication in MNRAS. 22 pages, 10 figures, 13 tables
Sterile Neutrinos
Creators: name: Dasgupta, Basudeb
name: Kopp, Joachim
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Neutrinos, being the only fermions in the Standard Model of Particle Physics that do not possess electromagnetic or color charges, have the unique opportunity to communicate with fermions outside the Standard Model through mass mixing. Such Standard Model-singlet fermions are generally referred to as "sterile neutrinos''. In this review article, we discuss the theoretical and experimental motivation for sterile neutrinos, as well as their phenomenological consequences. With the benefit of hindsight in 2020, we point out potentially viable and interesting ideas. We focus in particular on sterile neutrinos that are light enough to participate in neutrino oscillations, but we also comment on the benefits of introducing heavier sterile states. We discuss the phenomenology of eV-scale sterile neutrinos in terrestrial experiments and in cosmology, we survey the global data, and we highlight various intriguing anomalies. We also expose the severe tension that exists between different data sets and prevents a consistent interpretation of the global data in at least the simplest sterile neutrino models. We discuss non-minimal scenarios that may alleviate some of this tension. We briefly review the status of keV-scale sterile neutrinos as dark matter and the possibility of explaining the matter-antimatter asymmetry of the Universe through leptogenesis driven by yet heavier sterile neutrinos.
description: Submitted as an invited review for Physics Reports
On the implementation of multigrid methods for the numerical solution of partial differential equations
Creators: name: Delaney, Allen Daniel
Publisher: name: University of British Columbia
Year: 2010

description: A number of experimental implementations of the multigrid algorithm for the solution of systems of partial differential equations have been produced. One program is applicable to simple nonlinear scalar equations, the others to linear equations, scalar and systems, which may be mildly stiff. All use nested grids and residual extrapolation techniques to compute solution and error estimates very economically. One version implements list based adaptive grids to further decrease both computation and storage needed for comparable problems. Each experiment was demonstrated using a set of problems with known solutions and the program performance or nonperformance discussed. Several techniques were examined to ensure that the system of difference equations representing a given problem would be convergent. The use of artificial viscosity was found to be practical in the general case, though for linear problems the use of one-sided differencing may be superior.
Secure Decision Forest Evaluation
Creators: name: Bettaieb, Slim
name: Bidoux, Loic
name: Blazy, Olivier
name: Cottier, Baptiste
name: Pointcheval, David
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Decision forests are classical models to efficiently make decision on complex inputs with multiple features. While the global structure of the trees or forests is public, sensitive information have to be protected during the evaluation of some client inputs with respect to some server model. Indeed, the comparison thresholds on the server side may have economical value while the client inputs might be critical personal data. In addition, soundness is also important for the receiver. In our case, we will consider the server to be interested in the outcome of the model evaluation so that the client should not be able to bias it. In this paper, we propose a new offline/online protocol between a client and a server with a constant number of rounds in the online phase, with both privacy and soundness against malicious clients. CCS Concepts: $\bullet$ Security and Privacy $\rightarrow$ Cryptography.
title: Hokkaido, Japan: Archäologie in der Region Hokkaido: Naturumwelt der holozänen Jäger und Sammler
Creators: name: Müller, Stefanie
name: Leipe, Christian
name: Tarasov, Pavel E.
name: Wagner, Mayke
Publisher: name: Deutsches Archäologisches Institut
Year: 2017

description: e-Forschungsberichte, Faszikel 3 (2016)
description: Rebun Island with Hamanaka and Funadomari among the 43 documented archaeological sites and the environmental archive stored in the Lake Kushu sediment proves to be one of the key areas to study the interplay between ecology, climate and human activities. A set of 57 radiocarbon dates of the RK12 core (Lake Kushu) demonstrates that it represents a continuous environmental archive covering the last c. 17,000 years. The RK12 pollen record reflects distinct vegetation changes. After c. 1100 cal. BP, arboreal pollen percentages decrease, possibly linked to intensified usage of wood during the Okhotsk and Ainu culture periods. Plant macrofossil analysis shows use of various wild plants and also domesticated barley during the Okhotsk and Ainu periods.
title: Rom, Italien: Der Bestand „Paul des Granges“ an der Fotothek des DAI Rom
Creators: name: Pasieka, Paul P.
Publisher: name: Deutsches Archäologisches Institut
Year: 2017

description: e-Forschungsberichte, Faszikel 3 (2016)
description: The collection Paul des Granges, consisting of approximately 200 negatives and spanning the years between 1865 and 1880, is one of the oldest photographical collections currently preserved at the photographical archive of the DAI Rome. The aim of the project is both a systematic exploration of the collection as well as a reconstruction and contextualisation of the life and work of Paul des Granges by the means of an accompanying archival and bibliographical research. Paul des Granges was not only a pioneer of photography at the beginning of the second half of the 19th century but he also had a vast personal, pan-European network at his disposal. Although emphatically praised by his contemporaries, he was almost forgotten at the end of the 19th century.
Improving Response Quality with Backward Reasoning in Open-domain Dialogue Systems
Creators: name: Li, Ziming
name: Kiseleva, Julia
name: de Rijke, Maarten
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: Being able to generate informative and coherent dialogue responses is crucial when designing human-like open-domain dialogue systems. Encoder-decoder-based dialogue models tend to produce generic and dull responses during the decoding step because the most predictable response is likely to be a non-informative response instead of the most suitable one. To alleviate this problem, we propose to train the generation model in a bidirectional manner by adding a backward reasoning step to the vanilla encoder-decoder training. The proposed backward reasoning step pushes the model to produce more informative and coherent content because the forward generation step's output is used to infer the dialogue context in the backward direction. The advantage of our method is that the forward generation and backward reasoning steps are trained simultaneously through the use of a latent variable to facilitate bidirectional optimization. Our method can improve response quality without introducing side information (e.g., a pre-trained topic model). The proposed bidirectional response generation method achieves state-of-the-art performance for response quality.
description: 5 pages, 2 figures, Sigir 2021 short
Gravitational instabilities in Kerr space-times
Creators: name: Dotti, Gustavo
name: Gleiser, Reinaldo J.
name: Ranea-Sandoval, Ignacio Francisco
name: Vucetich, Héctor
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper we consider the possible existence of unstable axisymmetric modes in Kerr space times, resulting from exponentially growing solutions of the Teukolsky equation. We describe a transformation that casts the radial equation that results upon separation of variables in the Teukolsky equation, in the form of a Schrödinger equation, and combine the properties of the solutions of this equations with some recent results on the asymptotic behaviour of spin weighted spheroidal harmonics to prove the existence of an infinite family of unstable modes. Thus we prove that the stationary region beyond a Kerr black hole inner horizon is unstable under gravitational linear perturbations. We also prove that Kerr space-time with angular momentum larger than its square mass, which has a naked singularity, is unstable.
description: 9 pages, 4 figures, comments, references and calculation details added, asymptotic expansion typos fixed
Controlling permeation in electrically-deforming liquid crystal network films: a dynamical Landau theory
Creators: name: Kusters, Guido L. A.
name: Tito, Nicholas B.
name: Storm, Cornelis
name: van der Schoot, Paul
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Liquid crystal networks exploit the coupling between the responsivity of liquid-crystalline mesogens, e.g., to electric fields, and the (visco)elastic properties of a polymer network. Because of this, these materials have been put forward for a wide array of applications, including responsive surfaces such as artificial skins and membranes. For such applications, the desired functional response must generally be realized under strict geometrical constraints, such as provided by supported thin films. To model such settings, we present a dynamical, spatially-heterogeneous Landau-type theory for electrically-actuated liquid crystal network films. We find that the response of the liquid crystal network permeates the film from top to bottom, and illustrate how this affects the time scale associated with macroscopic deformation. Finally, by linking our model parameters to experimental quantities, we suggest that the permeation rate can be controlled by varying the aspect ratio of the mesogens and their degree of orientational order when cross-linked into the polymer network, for which we predict a single optimum. Our results contribute specifically to the rational design of future applications involving transport or on-demand release of molecular cargo in liquid crystal network films.
title: Monte Turcisi, Italien: Ein griechischer Militärstützpunkt in Ostsizilien
Creators: name: Jonasch, Melanie
name: Winterstein, Claudia
Publisher: name: Deutsches Archäologisches Institut
Year: 2017

description: e-Forschungsberichte, Faszikel 3 (2016)
description: On Monte Turcisi in the province of Catania lie the remains of a Greek fortress and a hermitage of the 17th century. In September 2016 a noninvasive campaign for the documentation of the architectural remains was organized as part of a broader project on the military infrastructure of the Greek colonies in Sicily. Neither the well-preserved fortification nor the hermitage was yet subject to detailed investigations. The surveying, geo-referencing and drawing of the visible remains was carried out in September within the framework of an international summer school through collaboration between the DAI, the Soprintendenza di Catania, the Technical University of Berlin and the University of Catania. Further investigations and stratigraphic excavations are planned for the clarification of contexts and chronology.
Mass measurements in the vicinity of the rp-process and the nu p-process paths with JYFLTRAP and SHIPTRAP
Creators: name: Weber, C.
name: Elomaa, V. -V.
name: Ferrer, R.
name: Fröhlich, C.
name: Ackermann, D.
name: Äystö, J.
name: Audi, G.
name: Batist, L.
name: Blaum, K.
name: Block, M.
name: Chaudhuri, A.
name: Dworschak, M.
name: Eliseev, S.
name: Eronen, T.
name: Hager, U.
name: Hakala, J.
name: Herfurth, F.
name: Heßberger, F. P.
name: Hofmann, S.
name: Jokinen, A.
name: Kankainen, A.
name: Kluge, H. -J.
name: Langanke, K.
name: Martín, A.
name: Martínez-Pinedo, G.
name: Mazzocco, M.
name: Moore, I. D.
name: Neumayr, J. B.
name: Novikov, Yu. N.
name: Penttilä, H.
name: Plaß, W. R.
name: Popov, A. V.
name: Rahaman, S.
name: Rauscher, T.
name: Rauth, C.
name: Rissanen, J.
name: Rodríguez, D.
name: Saastamoinen, A.
name: Scheidenberger, C.
name: Schweikhard, L.
name: Seliverstov, D. M.
name: Sonoda, T.
name: Thielemann, F. -K.
name: Thirolf, P. G.
name: Vorobjev, G. K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The masses of very neutron-deficient nuclides close to the astrophysical rp- and nu p-process paths have been determined with the Penning trap facilities JYFLTRAP at JYFL/Jyväskylä and SHIPTRAP at GSI/Darmstadt. Isotopes from yttrium (Z = 39) to palladium (Z = 46) have been produced in heavy-ion fusion-evaporation reactions. In total 21 nuclides were studied and almost half of the mass values were experimentally determined for the first time: 88Tc, 90-92Ru, 92-94Rh, and 94,95Pd. For the 95Pdm, (21/2^+) high-spin state, a first direct mass determination was performed. Relative mass uncertainties of typically $δm / m = 5 \times 10^{-8}$ were obtained. The impact of the new mass values has been studied in nu p-process nucleosynthesis calculations. The resulting reaction flow and the final abundances are compared to those obtained with the data of the Atomic Mass Evaluation 2003.
description: 21 pages, 12 figures, 2 tables, submitted to Phys. Rev. C
title: Jerusalem, Israel/Palästina: Die Grabung auf dem Zionshügel im Südwesten der Altstadt Jerusalems (im Bereich des historischen Anglikanisch-Preußischen Friedhofs)
Creators: name: Vieweger, Dieter
Publisher: name: Deutsches Archäologisches Institut
Year: 2017

description: e-Forschungsberichte, Faszikel 3 (2016)
description: In the past, two archaeological campaigns of research work have been done on the Mt. of Zion. In 1894 the British Archaeologists F. Bliss and A. Dickie searched for the Byzantine City Wall and found a gate. From 1977 to 1988 the monk Bargil Pixner damaged the area massively by digging there to prove his ideas about the area: His theories have relied on the interpretation of the Gate as ‘Essene Gate’ and the presence of several Miqwaot in the wider area which in his opinion showed the habits of the Essene Community. Aside from his articles no comprehensive digging report exists. Not even the archives – neither in the archive of the IAA nor in the archive of the Dormition Abbey where Bargil Pixner lived – document a lot of additional archaeological evidence. The preliminary season of archaeological work of the GPIA in 2015 was necessary to set the site into a state that allows proper archaeological documentation and further academic treatment and research. Since the area includes multiple city walls from different periods and several gate-contexts, a proper documentation of the site provides important information for the further research on the history of the City of Jerusalem.
SANDD: A directional antineutrino detector with segmented 6Li-doped pulse-shape-sensitive plastic scintillator
Creators: name: Sutanto, F.
name: Classen, T. M.
name: Dazeley, S. A.
name: Duvall, M. J.
name: Jovanovic, I.
name: Li, V. A.
name: Mabe, A. N.
name: Reedy, E. T. E.
name: Wu, T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present a characterization of a small (9-liter) and mobile 0.1% 6Li-doped pulse-shape-sensitive plastic scintillator antineutrino detector called SANDD (Segmented AntiNeutrino Directional Detector), constructed for the purpose of near-field reactor monitoring with sensitivity to antineutrino direction. SANDD comprises three different types of module. A detailed Monte Carlo simulation code was developed to match and validate the performance of each of the three modules. The combined model was then used to produce a prediction of the performance of the entire detector. Analysis cuts were established to isolate antineutrino inverse beta decay events while rejecting large fraction of backgrounds. The neutron and positron detection efficiencies are estimated to be 34.8% and 80.2%, respectively, while the coincidence detection efficiency is estimated to be 71.7%, resulting in inverse beta decay detection efficiency of 20.05 +/- 0.2%(stat.) +/- 2.1%(syst.). The predicted directional sensitivity of SANDD produces an uncertainty of 20 degree in the azimuthal direction per 100 detected antineutrino events.
Complex bodies with memory: linearized setting
Creators: name: Mariano, Paolo Maria
name: Paoletti, Paolo
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 74A30, 74A20, 74A60

description: The mechanics of complex bodies with memory effects is discussed in linearized setting. The attention is focused on the characterization of free energies in terms of minimum work and maximum recoverable work in the bulk and along a discontinuity surface endowed with its own surface energy, a surface internal to the body. To this aim, use is made of techniques proposed by Del Piero. Consequences of the Clausius-Duhem inequality are investigated for complex bodies with instantaneous linear elastic response.
description: 23 pages, accepted for publication in Mathematical Models in Applied Sciences
Tidal evolution of the eccentric moon around dwarf planet (225088) Gonggong
Creators: name: Arakawa, Sota
name: Hyodo, Ryuki
name: Shoji, Daigo
name: Genda, Hidenori
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: Recent astronomical observations revealed that (225088) Gonggong, a 1000-km-sized trans-Neptunian dwarf planet, hosts an eccentric satellite, Xiangliu, with an eccentricity of approximately 0.3. As the majority of known satellite systems around trans-Neptunian dwarf planets have circular orbits, the observed eccentricity of Gonggong--Xiangliu system may reflect the singular properties of the system. In this study, we assumed that Gonggong--Xiangliu system formed via a giant impact and investigated the following secular tidal evolution of Gonggong--Xiangliu system under the simplifying assumption of homogeneous bodies and of zero orbital inclination. We conducted coupled thermal--orbital evolution simulations using the Andrade viscoelastic model and included higher-order eccentricity functions. The distribution of the final eccentricity from a large number of simulations with different initial conditions revealed that the radius of Xiangliu is not larger than 100 km. We also derived the analytical solution of the semilatus rectum evolution, a function of the radius of Xiangliu. From the point of view of the final semilatus rectum, the radius of Xiangliu was estimated to be close to 100 km. Together with the results of the Hubble Space Telescope observations, our findings suggest Gonggong and Xiangliu have similar albedos.
description: 36 pages, 22 figures. Accepted for publication in AJ
Full Slonczewski-Weiss-McClure parametrization of few-layer twistronic graphene
Creators: name: Garcia-Ruiz, Aitor
name: Deng, Haiyao
name: Enaldiev, Vladimir V.
name: Fal'ko, Vladimir I.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We use a hybrid k dot p theory - tight binding (HkpTB) model to describe interlayer coupling simultaneously in both Bernal and twisted graphene structures. For Bernal-aligned interfaces, HkpTB is parametrized using the full Slonczewski-Weiss-McClure (SWMcC) Hamiltonian of graphite, which is then used to refine the commonly used minimal model for twisted interfaces, by deriving additional terms that reflect all details of the full SWMcC model of graphite. We find that these terms introduce some electron-hole asymmetry in the band structure of twisted bilayers, but in twistronic multilayer graphene, they produce only a subtle change of moire miniband spectra, confirming the broad applicability of the minimal model for implementing the twisted interface coupling in such systems.
Total correctness of an ISO transport protocol subset
Creators: name: Jürgensen, Wolfgang
Publisher: name: University of British Columbia
Year: 2010

description: In this thesis, a new Petri net based model called CSP nets is proposed to specify the control state aspects of a communication protocol. This model is combined with a CSP programming language specification to produce a formal model of a significant subset of the ISO transport protocol. The two compatible models are validated. The CSP programming language specification is checked for partial correctness and system safety and liveness using assertion proofs and temporal logic. A satisfaction proof is provided, too. The CSP net specification, checked by an automatic validation tool called "cspnet" contains no deadlock and is cyclic. The combined validation results show our ISO transport protocol specification to be totally correct. This thesis argues that a communication protocol should be specified using a combined programming language and state transition model to produce a rigorous and complete proof of its correctness.
The Ground State Energy of Dilute Bose Gas in Potentials with Positive Scattering Length
Creators: name: Yin, Jun
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The leading term of the ground state energy/particle of a dilute gas of bosons with mass $m$ in the thermodynamic limit is $2π\hbar^2 a ρ/m$ when the density of the gas is $ρ$, the interaction potential is non-negative and the scattering length $a$ is positive. In this paper, we generalize the upper bound part of this result to any interaction potential with positive scattering length, i.e, $a>0$ and the lower bound part to some interaction potentials with shallow and/or narrow negative parts.
description: Latex 28 pages
Probing the kinematics and chemistry of the hot core Mon R 2 IRS 3 using ALMA observations
Creators: name: Fuente, A.
name: Treviño-Morales, S. P.
name: Alonso-Albi, T.
name: Sánchez-Monge, A.
name: Rivière-Marichalar, P.
name: Navarro-Almaida, D.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present high angular resolution 1.1mm continuum and spectroscopic ALMA observations of the well-known massive proto-cluster Mon R 2 IRS 3.The continuum image at 1.1mm shows two components, IRS 3 A and IRS 3 B, that are separated by $\sim$0.65$"$. We estimate that IRS 3 A is responsible of $\sim$80 % of the continuum flux, being the most massive component. We explore the chemistry of IRS 3 A based on the spectroscopic observations. In particular, we have detected intense lines of S-bearing species such as SO, SO$_2$, H$_2$CS and OCS, and of the Complex Organic Molecules (COMs) methyl formate (CH$_3$OCHO) and dimethyl ether (CH$_3$OCH$_3$). The integrated intensity maps of most species show a compact clump centered on IRS 3 A, except the emission of the COMs that is more intense towards the near-IR nebula located to the south of IRS 3 A, and HC$_3$N whose emission peak is located $\sim$0.5$"$ NE from IRS 3 A. The kinematical study suggests that the molecular emission is mainly coming from a rotating ring and/or an unresolved disk. Additional components are traced by the ro-vibrational HCN $ν_2$=1 3$\rightarrow$2 line which is probing the inner disk/jet region, and the weak lines of CH$_3$OCHO, more likely arising from the walls of the cavity excavated by the molecular outflow. Based on SO$_2$ we derive a gas kinetic temperature of T$_k$$\sim$ 170 K towards the IRS 3 A. The most abundant S-bearing species is SO$_2$ with an abundance of $\sim$ 1.3$\times$10$^{-7}$, and $χ$(SO/SO$_2$) $\sim$ 0.29. Assuming the solar abundance, SO$_2$ accounts for $\sim$1 % of the sulphur budget.
description: 12 pages, 8 figures, accepted for publication in MNRAS
title: Jerusalem, Israel/Palästina: Das Projekt „Geophysikalische Erkundung der Lage und des Verlaufs der herodianischen Stadtmauer unter dem heutigen christlichen Viertel der Jerusalemer Altstadt“
Creators: name: zu Löwenstein, Sophie
Publisher: name: Deutsches Archäologisches Institut
Year: 2017

description: e-Forschungsberichte, Faszikel 3 (2016)
description: The project aims to find traces of the Herodian city wall (‘Second Wall’) in Jerusalem. As Flavius Josephus mentioned (Bell. V 4,2 § 146), the wall started at the „Gennat Gate“ and ran to the fortress “Antonia”. After the Jewish rebellion it has been destroyed by Titus in 70 AD. The ‘Second Wall’ could not be found yet. But the course of this Herodian city wall has some importance for the location of Golgotha and has therefore been discussed for more than 150 years. Since there is no possibility to undertake new excavations within the Old City the project uses geophysical methods. Within two seasons (2015 and 2016) the 7 m deep sondage underneath the Church of the Redeemer as well as several places in the Muristan, the Suqs and of the ‘Via Dolorosa’ will be measured. The first season took place in September 2015 and was a pilot study in order to proof the geographical and local measurement conditions and to solve the technical challenges given by the deep and narrow sondage underneath the Church of the Redeemer. Until October 2016 a high sensitive device has to be developed for measurements.
Shifting gears, shifting paradigms: Entrepreneurial considerations for construction robotic firms
Creators: name: Walzer, Alexander N.
name: Hall, Daniel
Publisher: name: ETH Zurich
Year: 2024
Subjects: Entrepreneurship
Innovation
Socio-economics
AEC
VC
Robotics

description: In the rapidly evolving organisational fields of construction robotics and digital fabrication (DFAB), the pace of technological advancement contrasts with the slow rate of adoption within the industry. This discrepancy raises critical questions regarding the factors influencing the integration of these innovations into construction practices. In response, entering its concluding phase, this doctoral study reexamines the seminal frameworks that Kangari and Halpin (1990) and Brown and Katz (2009) established. This project aims to uncover the complex dynamics that govern the adoption of construction robotics and DFAB technologies by embracing multiple research paradigms. This approach acknowledges the multifaceted nature of technological integration, suggesting that barriers to adoption extend beyond technical considerations to encompass a broader range of socioeconomic, organisational, and cultural dynamics.
description: Digitalisation of the Built Environment: 3rd 4TU-14UAS Research Day - extended abstracs
description: ISBN:978-94-6366-912-2
Transverse Observables and Mass Determination at Hadron Colliders
Creators: name: Gripaios, Ben
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: I consider the two-body decay of a particle at a hadron collider into a visible and an invisible particle, generalizing $W \to e ν$, where the masses of the decaying particle and the invisible decay particle are, {\em a priori}, unknown. I prove that the transverse mass, when maximized over possible kinematic configurations, can be used to determine both of the unknown masses. I argue that the proof can be generalized to cover cases such as decays of pair-produced superpartners to the lightest, stable superpartner at the Large Hadron Collider.
description: 4 pages; version published in JHEP
Novità nel campo della tutela del paesaggio
Creators: name: Manfredi Selvaggi, Francesco
Publisher: name: Territorio della Ricerca su Insediamenti e Ambiente. Rivista internazionale di cultura urbanistica
Year: 2009

description: Territorio della Ricerca su Insediamenti e Ambiente. Rivista internazionale di cultura urbanistica, No 3 (2009): The landscape in history, art, culture and urban planning;
A wavelength-tunable fiber-coupled source of narrowband entangled photons
Creators: name: Fedrizzi, Alessandro
name: Herbst, Thomas
name: Poppe, Andreas
name: Jennewein, Thomas
name: Zeilinger, Anton
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We demonstrate a wavelength-tunable, fiber-coupled source of polarization-entangled photons with extremely high spectral brightness and quality of entanglement. Using a 25 mm PPKTP crystal inside a polarization Sagnac interferometer we detect a spectral brightness of 273000 pairs/(s mW nm), a factor of 28 better than comparable previous sources while state tomography showed the two-photon state to have a tangle of T=0.987. This improvement was achieved by use of a long crystal, careful selection of focusing parameters and single-mode fiber coupling. We demonstrate that, due to the particular geometry of the setup, the signal and idler wavelengths can be tuned over a wide range without loss of entanglement.
description: 10 pages, 5 figures. Article rewritten, added Fig.(1a-1b). Published in Optics Express, comments welcome
title: Jerusalem, Israel/Palästina: Bi-nationale Tagung „Quo vadis ‚Biblical Archaeology‘? Past, Present and Future of Archaeology in the Southern Levant“
Creators: name: Soennecken, Katja
name: Serr, Marcel
Publisher: name: Deutsches Archäologisches Institut
Year: 2017

description: e-Forschungsberichte, Faszikel 3 (2016)
description: The 50th anniversary of German-Israeli diplomatic relations provided an unique opportunity to reflect the history, the current state and the future of German and German-Israeli archaeology in Israel, in the context of the bilateral relations. The GPIA hosted an interdisciplinary German-Israeli workshop dedicated to graduate students working on various subjects in several disciplines that are connected to the Ancient Near East. The aim was not only an interdisciplinary exchange of scientific knowledge between different fields, but also to increase and encourage contact and discussion between young German and Israeli researchers working on different aspects of the Ancient Near East. The conference was held in Jerusalem at the Hebrew University and the German Protestant Institute (“Kaisersaal” adjacent to Church of Ascension and courtyard adjacent to Church of the Redeemer) and lasted for three days. 17 presentations were given in four sessions (German-Israeli Joint Ventures in the Past, Present and Future; With Bible and Trowel? Biblical Archaeology today and future perspectives; Sites after excavation – Restoration, Conservation and Presentation; Archaeology and its Methods in Dialogue with other Sciences).
Magneto-optical and micromagnetic simulation study the current driven domain wall motion in ferromagnetic (Ga,Mn)As
Creators: name: Wang, K. Y.
name: Irvine, A. C.
name: Campion, R. P.
name: Foxon, C. T.
name: Wunderlich, J.
name: Williams, D. A.
name: Gallagher, B. L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We have studied current-driven domain wall motion in modified Ga_0.95Mn_0.05As Hall bar structures with perpendicular anisotropy by using spatially resolved Polar Magneto-Optical Kerr Effect Microscopy and micromagnetic simulation. Regardless of the initial magnetic configuration, the domain wall propagates in the opposite direction to the current with critical current of 1~2x10^5A/cm^2. Considering the spin transfer torque term as well as various effective magnetic field terms, the micromagnetic simulation results are consistent with the experimental results. Our simulated and experimental results suggest that the spin-torque rather than Oersted field is the reason for current driven domain wall motion in this material.
description: 10 pages, 3 figures, to be published in J. Magn. Magn. Mater
title: Tara, Irland: Landschaftsarchäologische Forschungen am Königssitz von Tara
Creators: name: Beusing, Ruth
name: Rassmann, Knut
Publisher: name: Deutsches Archäologisches Institut
Year: 2017

description: e-Forschungsberichte, Faszikel 3 (2016)
description: The Hill of Tara (Co. Meath, Ireland) holds a fascination as one of the preeminent icons of Irish culture and identity. Its 5,000 years of history seem to be preserved eternally within the burials, embankments and enclosures visible in the landscape, well known to every Irishman from myths and history. But underneath its topsoil more monuments are currently being discovered by modern nondestructive survey methods in a joint programme of the Romano- Germanic Commission, the Discovery Programme Dublin and the National University of Ireland Galway. More than 50 ha of the Tara area have been surveyed geomagnetically and hundreds of new archaeological structures have been detected in the area. The analysis of the data will bring new insights into the vivid history of the site, and comparison with further sites in the surrounding landscape will highlight the tight network of the sacred site.
Iniziative accademiche
Creators: name: Vari, Autori
Publisher: name: Territorio della Ricerca su Insediamenti e Ambiente. Rivista internazionale di cultura urbanistica
Year: 2009

description: Territorio della Ricerca su Insediamenti e Ambiente. Rivista internazionale di cultura urbanistica, No 3 (2009): The landscape in history, art, culture and urban planning;
Dibattiti e convegni
Creators: name: Vari, Autori
Publisher: name: Territorio della Ricerca su Insediamenti e Ambiente. Rivista internazionale di cultura urbanistica
Year: 2009

description: Territorio della Ricerca su Insediamenti e Ambiente. Rivista internazionale di cultura urbanistica, No 3 (2009): The landscape in history, art, culture and urban planning;
Studi e Piani
Creators: name: Vari, Autori
Publisher: name: Territorio della Ricerca su Insediamenti e Ambiente. Rivista internazionale di cultura urbanistica
Year: 2009

description: Territorio della Ricerca su Insediamenti e Ambiente. Rivista internazionale di cultura urbanistica, No 3 (2009): The landscape in history, art, culture and urban planning;
title: Tappeh Rivi, Iran: Die iranisch-deutschen Arbeiten des Jahres 2016
Creators: name: Thomalsky, Judith
Publisher: name: Deutsches Archäologisches Institut
Year: 2017

description: e-Forschungsberichte, Faszikel 3 (2016)
description: Tappeh Rivi is located in the Samangan plain (10 km south of the Atrak valley) in the Iranian province North-Khorasan. The ancient site consists of at least four settlement mounds A, B, C and D and covers more than 110 ha. The central area is intensively damaged by soil-gathering activities of tile factories since the later 1970s. According to satellite data several ancient settlement hills and features like rectangular structures and hollow ways vanished during the last 40 years. Analyses of topographical data and satellite images give significant perspectives for future archaeological work, but also reflect the contrasting evidence of destruction by modern activities. Five major occupation periods can be described, dating from Early Iron Age to the Early Islamic period. A first 14C data series dates the occupation of mound A in the southern area into the time around 500 BC, while the data from mound B further north point to the first centuries AD. This matches the survey observations which show differing horizontal material complexes (Iron Age/Achaemenid occupation in the Southern area versus Parthian/Early Sasanian occupation in the North).
On the solutions of generalized discrete Poisson equation
Creators: name: Werpachowski, Roman
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 39A12, 74G30

description: The set of common numerical and analytical problems is introduced in the form of the generalized multidimensional discrete Poisson equation. It is shown that its solutions with square-summable discrete derivatives are unique up to a constant. The proof uses the Fourier transform as the main tool. The necessary condition for the existence of the solution is provided.
description: 8 pages, LaTeX
Recensioni
Creators: name: Vari, Autori
Publisher: name: Territorio della Ricerca su Insediamenti e Ambiente. Rivista internazionale di cultura urbanistica
Year: 2009

description: Territorio della Ricerca su Insediamenti e Ambiente. Rivista internazionale di cultura urbanistica, No 3 (2009): The landscape in history, art, culture and urban planning;
Inductive Power Transfer Through Saltwater
Creators: name: Wandinger, J. N.
name: Roberts, D. M.
name: Bobowski, J. S.
name: Johnson, T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: We investigated inductive power transfer (IPT) through a rectangular slab of saltwater. Our inductively-coupled transmitters and receivers were made from loop-gap resonators (LGRs) having resonant frequencies near 100 MHz. Electric fields are confined within the narrow gaps of the LGRs making it possible to strongly suppress the power dissipation associated with electric fields in a conductive medium. Therefore, the power transfer efficiency in our system was limited by magnetic field dissipation in the conducting medium. We measured the power transfer efficiency as a function of both the conductivity of the water and the resonant frequency of the LGRs. We also present an equivalent circuit model that can be used to model IPT through a conductive medium. Finally, we show that using dividers to partition the saltwater volume provides another means of enhancing power transfer efficiency.
description: 5 pages, 5 figures
Artificial Intelligence Anxiety, Self-Efficacy, and Self-Competence among Students: Implications to Higher Education Institutions
Creators: name: Asio, John Mark R.
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 390201
subject: Education policy
classificationCode: 390303
subject: Higher education
classificationCode: 460206
subject: Knowledge representation and reasoning
classificationCode: 460209
subject: Planning and decision making

description: Artificial intelligence (AI) has become a trending topic of study, especially in education. However, due to its unknown potential, students are adamant about it. The objective of this study is to investigate college students’ perceptions of artificial intelligence (AI) anxiety, AI self-efficacy, and AI self-competence in a tertiary education institution. The study used a correlational research design with the help of an online survey to determine the variances and relationships among 1,030 purposively chosen students. This study adopted and modified measures that underwent reliability testing to gather data. The collected data were subjected to descriptive and inferential analysis using SPSS 23 for data computation. Results show that students have a moderate level of AI anxiety and AI self-efficacy; however, in terms of AI self-competency, they have a high level of it. Inferential analysis also revealed significant differences when the three variables were grouped according to demographic characteristics. At the same time, the study also found significant associations between AI anxiety, AI self-efficacy, and AI self-competence. The regression analysis confirmed that learning, job replacement, sociotechnical blindness, and AI configuration significantly influenced AI self-efficacy. On the other hand, job replacement, sociotechnical blindness, and AI configuration also predict AI self-competence. The study concludes that variances and relationships exist among AI anxiety, self-efficacy, and self-competence among college students.
title: Uruk, Irak: Feldforschungen und Aufarbeitung von Grundlagendaten Konservierungsarbeiten in der Uruk-Warka- Sammlung des DAI an der Universität Heidelberg
Creators: name: van Ess, Margarete
Publisher: name: Deutsches Archäologisches Institut
Year: 2017

description: e-Forschungsberichte, Faszikel 3 (2016)
description: In 2015 fieldwork was resumed at Uruk (Province al-Muthanna in Southern Iraq), and this for the first time since 2002. Fortunately, the site – which has been a focus of German scholars for more than a century – was well-protected by efforts of its devoted guard and the local Police for Antiquities. Be this as it may, the long absence of specialists from the site means that several structures are currently in need of intensive conservation measures. Additionally, a proposal put forward by the Iraqi government for the application of World Heritage status has seen preparations made for the compilation of an essential site management plan. First fieldwork at Uruk by the Orient Department has been devoted to a survey in the suburbs of the ancient town as well as to preparations for conservation measures.
Protocol specification techniques and specification of the ISO session layer protocol
Creators: name: Lee, Roselyn Kam Yiu
Publisher: name: University of British Columbia
Year: 2010

description: Communication between computers on a network is coordinated by sets of rules known as communication protocols. It is the formalization of the definitions of such protocols which is the focus of this thesis. Formal specifications play a key role in the design, implementation and verification of protocols. As we shall see, informal descriptions are inadequate due to the complexity of most protocols. The emergence of standard protocols to be implemented by a wide community of users further emphasize the importance of clear and concise specifications. There have been extensive research in the area of formal definition of protocols. The techniques introduced generally fall into categories of transition models, program models and hybrid (transition and program combined) models. In this thesis, we review various methods in these classes and illustrate them with specifications of the alternating bit protocol. To demonstrate the applicability of these specification techniques, we also specify the ISO session layer protocol using one of the (hybrid) methods described.
title: Erbil, Irak: Survey im Stadtgebiet von Erbil
Creators: name: Hausleiter, Arnulf
name: van Ess, Margarete
Publisher: name: Deutsches Archäologisches Institut
Year: 2017

description: e-Forschungsberichte, Faszikel 3 (2016)
description: A first season of surface survey in the city of Erbil identified altogether 178 survey squares within the 60 m-Ring Road. Archaeological sampling concentrated on the area within the 30 m-Road providing predominantly ceramics from the Middle Islamic period. Iron Age pottery is clearly less represented, and material from preceding periods has not yet been recorded. A number of topographical features was identified, some of them probably ancient settlement mounds. The Pleiades satellite image, which serves as cartographic foundation for the project, has been rectified by geodetic methods aimed at developing a Digital Terrain Model.
A proof of the uniform boundedness of solutions to the wave equation on slowly rotating Kerr backgrounds
Creators: name: Dafermos, Mihalis
name: Rodnianski, Igor
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Analysis of PDEs (math.AP)
subject: Differential Geometry (math.DG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We consider Kerr spacetimes with parameters a and M such that |a|<< M, Kerr-Newman spacetimes with parameters |Q|<< M, |a|<< M, and more generally, stationary axisymmetric black hole exterior spacetimes which are sufficiently close to a Schwarzschild metric with parameter M>0, with appropriate geometric assumptions on the plane spanned by the Killing fields. We show uniform boundedness on the exterior for sufficiently regular solutions to the scalar homogeneous wave equation. In particular, the bound holds up to and including the event horizon. No unphysical restrictions are imposed on the behaviour of the solution near the bifurcation surface of the event horizon. The pointwise estimate derives in fact from the uniform boundedness of a positive definite energy flux. Note that in view of the very general assumptions, the separability properties of the wave equation on the Kerr background are not used.
description: 71 pages, 3 figures
Rational Design of Peptide Microbicides
Creators: name: Saadatmand, Zahra
Publisher: name: La Trobe
Year: 2024
Subjects: classificationCode: 310110
subject: Receptors and membrane biology
classificationCode: 310105
subject: Cellular interactions (incl. adhesion, matrix, cell wall)
classificationCode: 310701
subject: Bacteriology

description: Submitted in total fulfilment of the requirements for the degree of Doctor of Philosophy to the School of Agriculture, Biomedicine and Environment, La Trobe University, Victoria, Australia.