cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Local transformations of units in Scalar-Tensor Cosmology
Creators: name: Catena, Riccardo
name: Pietroni, Massimo
name: Scarabello, Luca
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The physical equivalence of Einstein and Jordan frame in Scalar Tensor theories has been explained by Dicke in 1962: they are related by a local transformation of units. We discuss this point in a cosmological framework. Our main result is the construction of a formalism in which all the physical observables are frame-invariant. The application of this approach to CMB codes is at present under analysis.
description: To appear in the proceedings of IRGAC 2006, 2nd International Conference on Quantum Theories and Renormalization Group in Gravity and Cosmology, Barcelona, July 11-15 2006
Search for flavour-changing neutral current interactions in the top-quark Higgs boson sector in multi-lepton final states with the ATLAS detector at the LHC at s = 13 TeV
Creators: name: Thielmann, Oliver
Publisher: name: Bergische Universität Wuppertal
Year: 2023

description: A search for flavour-changing neutral currents in the top-quark Higgs boson sector is presented, utilizing an integrated luminosity of Lint = 140 fb1 of proton-proton collisions recorded by the ATLAS experiment at a centre-of-mass energy of s = 13 TeV. As flavour-changing neutral currents are highly suppressed in the Standard Model of particle physics, these processes are sensitive to physics beyond the Standard Model. To differentiate between signal and background, advanced reconstruction methods are employed for creating kinematic distributions. Multivariate analysis techniques are utilised to optimize the differentiation between signal and background, leading to expected upper exclusion limits on the branching ratio B (t qH) in a binned profile likelihood fit including a full set of systematic uncertainties. The obtained expected exclusion limits amount to B (t uH) < 4.1 · 104 and B (t cH) < 5.0 · 104 for the branching ratio corresponding to the utH and ctH couplings respectively.
On the Refractive Index of Ageing Dispersions of Laponite
Creators: name: Kumar, N. V. N. Ravi
name: Muralidhar, K.
name: Joshi, Yogesh M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Aqueous dispersion of Laponite at low ionic concentration is of interest since it undergoes structural evolution with respect to time, which is usually termed as ageing. In this work we study the refractive index behavior as a function of ageing time, concentration and temperature. We observed that the extended Lorenz-Lorentz equation fitted the refractive index dependence on concentration and temperature very well. The refractive index did not show any dependence on ageing time. However, the dependence of refractive index on concentration showed a marked change as the system underwent transition from an isotropic to a biphasic state. The slope of the refractive index-density data is remarkably close to that of water at all Laponite concentrations. In the context of transport phenomena, optical measurements such as interferometry can exploit the water-like behavior of Laponite dispersions.
description: 13 pages, 3 figures, to appear in Applied Clay Science
Gravitational baryogenesis in DGP brane cosmology
Creators: name: Atazadeh, K.
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider the imbalance of matter and antimatter by using a gravitational baryogenesis mechanism in the background of Dvali-Gabadadze-Porrati (DGP) brane cosmology. By taking into account a flat Friedmann-Lemaitre-Robertson-Walker (FLRW) metric in the DGP brane model, we find that for a radiation dominated universe, $w = 1/3$, the ratio of baryon number density to entropy from the gravitational baryogenesis is not zero, contrary to ordinary general relativity. Also, we study the ratio of baryon number density to entropy against the observational constraints in DGP cosmology.
description: 5 pages
ДХХ ЧЕГАРА ҚЎШИНЛАРИНИНГ МАЪМУРИЙ ҲУҚУҚБУЗАРЛИКЛАР ТЎҒРИСИДАГИ ИШЛАРНИ ЮРИТИШНИНГ АЙРИМ МАСАЛАЛАРИ
Creators: name: Холбўтаев, Абдуғани
Publisher: name: Zenodo
Year: 2024

description: Мақолада ДХХ Чегара қўшинларининг маъмурий ҳуқуқбузарликлар тўғрисидаги ишларни юритиш амалиётининг айрим масалаларининг таҳлили ёритиб берилган бўлиб, миллий қонунчилик ҳужжатларини кўриб чиқиш натижаларига мувофиқ, Чегара қўшинларининг бу борадаги фаолиятини такомиллаштириш бўйича Ўзбекистон Республикаси Вазирлар Маҳкамасининг тегишли қарорига қўшимча киритилиши юзасидан таклиф билдириб ўтилган.
Measurable Concurrence of Mixed States
Creators: name: Yu, Chang-shui
name: Li, C.
name: Song, He-shan
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show that bipartite concurrence for rank-2 mixed states of qubits is written by an observable which can be exactly and directly measurable in experiment by local projective measurements, provided that four copies of the composite quantum system are available. In addition, for a tripartite quantum pure state of qubits, the 3-tangle is also shown to be measurable only by projective measurements on the reduced density matrices of a pair of qubits conditioned on four copies of the state.
description: 3 pages
REEEM-D3.1a_Focus Report on economic impacts
Creators: name: REEEM Project
Publisher: name: Zenodo
Year: 2019

description: This deliverable analyses the impacts of the decarbonization efforts taken by countries on a global basis, with a higher degree of attention to the EU-28 countries, under three pathways – the Status-quo, the REEEM and the Paris agreement – between 2011 and 2050. While the Status-quo pathway assumes low ambition targets for the emission reduction until 2050, reflecting the actual state of the NDCs and the Paris agreement pathway assumes that each region in the world takes measures consistent with the 2° target, the REEEM pathway assembles the main assumptions from this project to how the world will develop in the coming years and presents an intermediary emissions path in between the other two pathways. This report’s objective is to assess the economic impacts of pursuing different reduction targets and main challenges to ensure economic growth.
On likelihood ratio tests
Creators: name: Lehmann, Erich L.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 62F03 (Primary)

description: Likelihood ratio tests are intuitively appealing. Nevertheless, a number of examples are known in which they perform very poorly. The present paper discusses a large class of situations in which this is the case, and analyzes just how intuition misleads us; it also presents an alternative approach which in these situations is optimal.
description: Published at http://dx.doi.org/10.1214/074921706000000356 in the IMS Lecture Notes--Monograph Series (http://www.imstat.org/publications/lecnotes.htm) by the Institute of Mathematical Statistics (http://www.imstat.org)
Multi-lepton signatures of vector-like leptons with flavor
Creators: name: Bißmann, Stefan
name: Hiller, Gudrun
name: Hormigos-Feliu, Clara
name: Litim, Daniel F.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We investigate collider signatures of standard model extensions featuring vector-like leptons and a flavorful scalar sector. Such a framework arises naturally within asymptotically safe model building, which tames the UV behavior of the standard model towards the Planck scale and beyond. We focus on values of Yukawa couplings and masses which allow to explain the present data on the muon and electron anomalous magnetic moments. Using a CMS search based on $77.4 \, \rm{fb}^{-1}$ at the $\sqrt{s}=13$ TeV LHC we find that flavorful vector-like leptons are excluded for masses below around $300$ GeV if they are singlets under $SU(2)_L$, and around $800$ GeV if they are doublets. Exploiting the flavor-violating-like decays of the scalars, we design novel null test observables based on opposite sign opposite flavor invariant masses. These multi-lepton distributions allow to signal new physics and to extract mass hierarchies in reach of near-future searches at the LHC and the HL-LHC.
description: 32 pages, 17 figures
A calendar Quipu of the early 17th century and its relationship with the Inca astronomy
Creators: name: Laurencich-Minelli, Laura
name: Magli, Giulio
Publisher: name: arXiv
Year: 2008
Subjects: subject: History and Philosophy of Physics (physics.hist-ph)
subject: FOS: Physical sciences

description: The so-called Miccinelli documents are a set of documents which were written by Jesuit scholars in Peru within the first half of the 17th century. Among such documents, one contains the depiction of a Quipu, that is, a device made out of cords of different nature and colors which, with the help of nodes, were used by the Incas for storing data. This Quipu is claimed by the author, Blas Valera, to be a reproduction of the Inca calendar of the year of the Spanish conquest. We give here a complete analysis of the astronomical events occurred in Cusco in that year, showing that they actually correspond closely to the data reported in the Quipu, and compare the calendrical information - such as the names and the rituals of each month - with those given by other documents, especially the Nuova Coronica by G. Poma de Ayala. The possible relevance of the document for the knowledge of the original Inca lore of the sky is discussed in details.
description: Archaeoastronomy/History of Astronomy
REEEM-D3.1b_Focus Report on economic impacts - Exploring the distributional impacts of the European Energy Transition
Creators: name: REEEM Project
Publisher: name: Zenodo
Year: 2019

description: This deliverable analyses the impacts of the decarbonization efforts taken by countries on a global basis, with a higher degree of attention to the EU-28 countries, under five scenarios – the Reference, Base Pathway, Local Solutions, Paris Agreement - EU and the Paris agreement – between 2011 and 2050. The Reference pathway assumes low ambition targets for the emission reduction until 2050. In comparison to the previous focus report on economic impacts, this report explores the impacts of the energy transition, and more specifically carbon taxation, on different income groups in the EU-28, which shines a light on topics such as changes on consumption, income development and tax incidence on different income groups.
Harare und die Frage der Kirchen in Solidarität mit den Frauen
Creators: name: Vollendorf, Anja
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 48 Nr. 2 (1999): Ökumenische Rundschau, Band 48, Heft 2
REEEM-D3.2_Case study on carbon leakage and competitiveness
Creators: name: REEEM Project
Publisher: name: Zenodo
Year: 2019

description: The EU is planning to become a low-carbon society and, in order to do so, is imposing ambitious targets for its emissions until 2050. Therefore, it is important to predict what kind of impacts these actions will bring to different sectors and the entire economy. This work touches the economic aspects of pursuing such targets, especially for industries that have a higher risk of carbon leakage, presenting results for a large number of policy measures in the EU-28, combined with different emission targets outside of it. Finally, it suggests which actions can positively impact the energy intensive sectors and promote their competitiveness under ambitious environmental targets.
The effects of sustained heavy exercise on the development of pulmonary interstitial edema in trained male cyclists
Creators: name: O’Hare, Turlough
Publisher: name: University of British Columbia
Year: 2009

description: The transport of O₂ from alveolus to pulmonary capillary has not typically been thought of as the limiting step in aerobic performance. It has been demonstrated that fit athletes are able to, at high workloads, elicit a decreased arterial O₂ saturation to levels below 90%. This showed that healthy, fit individuals were able to exceed the capacity of the pulmonary system, and was termed exercise-induced-hypoxemia (ETH). The possible mechanisms for EIH include veno-arterial shunts, VA/QC mismatch, relative alveolar hypoventilation, decreased pulmonary transit time, and pulmonary edema. This study looked for increases in extravascular water (EW) after a 45-minute intense exercise bout as evidence of pulmonary edema. The subjects were 8 highly trained males (mean ± SD: age; 26.9 + 3.0 years, height; 179.9 ± 5.7 cm, weight; 76.1 ±6.5 kg) who performed three tests used to indicate differences pre and post exercise. The testing involved measurements to ensure normal spirometry (FVC; 6.07 ± 1.141, FEV₁-FVC⁻¹; 79.0 ± 9.2 %) and sufficient fitness (VO₂max = 63.7 ± 2.63 ml-min⁻¹-kg⁻¹). During intervention testing, subjects completed a 45-minute bout of maximum sustainable cycling activity, pre and post pulmonary diffusion measures, and pre and post magnetic resonance imaging. Subjects exercised at 10% below their ventilatory threshold for 45 minutes at a power output of 300 ± 25 watts. Diffusion for carbon monoxide (DLco) and lung capillary volume (Vc) had decreased one hour post exercise by 12% (p = 0.004) and 21% (p = 0.017), respectively, but no significant change in membrane diffusing capacity (DM) was found. The magnetic resonance (MR) scans showed a 9.4% increase (p = .043) in pulmonary extravascular water after exercise, consistent with the theory that EW produced in well trained subjects. This study was the first to use new MR advances to show an increase in EW following long duration heavy exercise in trained male subjects.
Probing the centre of the large circumstellar disc in M17
Creators: name: Nielbock, M.
name: Chini, R.
name: Hoffmeister, V. H.
name: Nürnberger, D. E. A.
name: Scheyda, C. M.
name: Steinacker, J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigated the nature of the hitherto unresolved elliptical infrared emission in the centre of the ~20000 AU disc silhouette in M 17. We combined high-resolution JHKsL'M' band imaging carried out with NAOS/CONICA at the VLT with [Fe II] narrow band imaging using SOFI at the NTT. The analysis is supported by Spitzer/GLIMPSE archival data and by already published SINFONI/VLT Integral Field Spectroscopy data. For the first time, we resolve the elongated central infrared emission into a point-source and a jet-like feature that extends to the northeast in the opposite direction of the recently discovered collimated H2 jet. They are both orientated almost perpendicular to the disc plane. In addition, our images reveal a curved southwestern emission nebula whose morphology resembles that of the previously detected northeastern one. Both nebulae are located at a distance of 1500 AU from the disc centre. We describe the infrared point-source in terms of a protostar that is embedded in circumstellar material producing a visual extinction of 60 <= Av <= 82. The observed Ks band magnitude is equivalent to a stellar mass range of 2.8 Msun <= Mstar <= 8 Msun adopting conversions for a main-sequence star. Altogether, we suggest that the large M 17 accretion disc is forming an intermediate to high-mass protostar. Part of the accreted material is expelled through a symmetric bipolar jet/outflow.
description: 6 pages, 3 figures, accepted by MNRAS (16 May 2008)
Partial Stellar Explosions -- Ejected Mass and Minimal Energy
Creators: name: Linial, Itai
name: Fuller, Jim
name: Sari, Re'em
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Many massive stars appear to undergo enhanced mass loss during late stages of their evolution. In some cases, the ejected mass likely originates from non-terminal explosive outbursts, rather than continuous winds. Here we study the dependence of the ejecta mass, $m_{\rm ej}$, on the energy budget $E$ of an explosion deep within the star, using both analytical arguments and numerical hydrodynamics simulations. Focusing on polytropic stellar models, we find that for explosion energies smaller than the stellar binding energy, the ejected mass scales as $m_{\rm ej} \propto E^{\varepsilon_{m}}$, where $\varepsilon_m = 2.4-3.0$ depending on the polytropic index. The loss of energy due to shock breakout emission near the stellar edge leads to the existence of a minimal mass-shedding explosion energy, corresponding to a minimal ejecta mass. For a wide range of progenitors, from Wolf-Rayet stars to red supergiants, we find a similar limiting energy of $E_{\rm min} \approx 10^{46}-10^{47} \rm \, erg$, almost independent of the stellar radius. The corresponding minimal ejecta mass varies considerably across different progenitors, ranging from $\sim \! 10^{-8} \, \rm M_\odot$ in compact stars, up to $\sim \! 10^{-2} \, \rm M_\odot$ in red supergiants. We discuss implications of our results for pre-supernova outbursts driven by wave heating, and complications caused by the non-constant opacity and adiabatic index of realistic stars.
description: 9 pages, 5 figures. Submitted to MNRAS
Morphological changes of a superconducting phase in a mixed state with a normal current: a multiple scale analysis
Creators: name: Bhattacharyay, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The mixed state of superconducting (SC) and normal (N) phases in one dimensional systems are characterized by several phase slips and localization of the order parameter of the SC phase. The phenomenon is explained on the basis of a complex Ginzburg Landau (CGL) model. We present a simple analysis of the system on multiple scales to capture localization and phase slips when phases coexist.
description: 3 pages, no figure
INVESTIGATION OF THE ROLE OF PRINCIPAL'S TRANSFORMATIONAL LEADERSHIP FOR STRENGTHENING STUDENT CHARACTER IN INDONESIAm
Creators: name: Rustan Effendi, Yulius
Publisher: name: figshare
Year: 2021
Subjects: subject: 159999 Commerce, Management, Tourism and Services not elsewhere classified
subject: FOS: Economics and business
subject: 150305 Human Resources Management
subject: 150307 Innovation and Technology Management
subject: 150310 Organisation and Management Theory
subject: 150313 Quality Management

description: Character education reinforcement in secondary school is one of the
educational programs aimed to expect the tendency of moral perversion
because of moral decadence. Various forms of moral deviations result in
students being alienated from normal life. This article aims to discuss
character values reinforcement and the principal's transformational
leadership strategy to shape student characters in a descriptive-critical way.
The aims of this study are school strategies in optimizing to carry out
character education reinforcement. This research uses a qualitative method
with a case study design. Data analysis used a modified analytic analysis
method. Meanwhile, the data validity measurement was based on the level of
credibility, transferability, dependability, and confirmability. The results
emphasize the importance of shaping student character as an anticipatory
step to decrease moral distortions among high school students and the
effectiveness of the principal's transformational leadership role in optimizing
implementing character education strengthening programs in schools.
Determination of the Newtonian Gravitational Constant Using Atom Interferometry
Creators: name: Lamporesi, G.
name: Bertoldi, A.
name: Cacciapuoti, L.
name: Prevedelli, M.
name: Tino, G. M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We present a new measurement of the Newtonian gravitational constant G based on cold atom interferometry. Freely falling samples of laser-cooled rubidium atoms are used in a gravity gradiometer to probe the field generated by nearby source masses. In addition to its potential sensitivity, this method is intriguing as gravity is explored by a quantum system. We report a value of G=6.667 10^{-11} m^{3} kg^{-1} s^{-2}, estimating a statistical uncertainty of $\pm$ 0.011 10^{-11} m^{3} kg^{-1} s^{-2} and a systematic uncertainty of $\pm$ 0.003 10^{-11} m^{3} kg^{-1} s^{-2}. The long-term stability of the instrument and the signal-to-noise ratio demonstrated here open interesting perspectives for pushing the measurement accuracy below the 100 ppm level.
description: 4 figures
The Influence of Customer Relationship Management and Customer Experience Quality on Customer Loyalty of Thai Credit Retail Bank Public Company Limited: Testing the Role of Corporate Image as a Mediator Variable
Creators: name: Phatnarin Kahokaew
Publisher: name: Asian Administration and Management Review
Year: 2021
Subjects: Customer Relationship Management
Customer Experience Quality
Corporate Image
Customer Loyalty

description: Asian Administration and Management Review, 4, 2, 1-10
New (virtual) Physics in the Era of the LHC
Creators: name: Vysotsky, M. I.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A simple extension of the Standard Model demonstrates that New Physics non-reachable through direct production at LHC can induce up to 10% corrections to the length of the unitarity triangle side, extracted from $Δm_{B_d}$.
description: 5 pages
Internetwork Magnetic Fields Seen in Fe I 1564.8 nm
Creators: name: Hanaoka, Yoichiro
name: Sakurai, Takashi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We studied the properties of internetwork magnetic fields in the solar photosphere taking advantage of full-disk Stokes $V/I$ maps of the \ion{Fe}{1} 1564.8 nm line, which were obtained during 2010--2019. In contrast to most of the previous studies, we used data with moderate spatial and spectral resolutions. Nonetheless, we were able to distinguish the internetwork field components and the active region / network boundary components using large Zeeman splitting of the \ion{Fe}{1} 1564.8 nm line. Thus, our analysis provides a point of view quite different from that of the previous studies. We analyzed the data statistically without ordinary inversions, yet we successfully derived some properties of internetwork fields; the internetwork is filled with small-scale magnetic fields, their strength is within the weak-field regime of the \ion{Fe}{1} 1564.8 nm line (300--400 G or less), and the internetwork fields are highly inclined. Although the results were obtained from the analysis performed from a different perspective, they are consistent with the majority of the previous findings. In addition, no notable variation in the properties of the internetwork fields was found during the period covering most of solar cycle 24.
description: 16 pages, 8 figures, Astrophysical Journal, in press
Vortex motion quantifies strong dissipation in a holographic superfluid
Creators: name: Wittmer, Paul
name: Schmied, Christian-Marcel
name: Gasenzer, Thomas
name: Ewerz, Carlo
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Holographic duality provides a description of strongly coupled quantum systems in terms of weakly coupled gravitational theories in a higher-dimensional space. It is a challenge, however, to quantitatively determine the physical parameters of the quantum systems corresponding to generic holographic theories. Here, we address this problem for the two-dimensional holographic superfluid, known to exhibit strong dissipation. We numerically simulate the motion of a vortex dipole and perform a high-precision matching of the corresponding dynamics resulting from the dissipative Gross-Pitaevskii equation. Excellent agreement is found for the vortex core shape and the spatio-temporal trajectories. A further comparison to the Hall-Vinen-Iordanskii equations for point vortices interacting with the superfluid allows us to determine the friction parameters of the holographic superfluid. Our results suggest that holographic vortex dynamics can be applied to experimentally accessible superfluids like strongly coupled ultracold Bose gases or thin helium films with temperatures in the Kelvin range. This would make holographic far-from-equilibrium dynamics and turbulence amenable to experimental tests.
description: 16 pages; videos and additional material at https://www.thphys.uni-heidelberg.de/~holography/holoDGPE
Student's $t$-test for scale mixture errors
Creators: name: Székely, Gábor J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 62F03 (Primary) 62F04 (Secondary)

description: Generalized t-tests are constructed under weaker than normal conditions. In the first part of this paper we assume only the symmetry (around zero) of the error distribution (i). In the second part we assume that the error distribution is a Gaussian scale mixture (ii). The optimal (smallest) critical values can be computed from generalizations of Student's cumulative distribution function (cdf), $t_n(x)$. The cdf's of the generalized $t$-test statistics are denoted by (i) $t_n^S(x)$ and (ii) $t_n^G(x)$, resp. As the sample size $n\to \infty$ we get the counterparts of the standard normal cdf $Φ(x)$: (i) $Φ^S(x):=\operatorname {lim}_{n\to \infty}t_n^S(x)$, and (ii) $Φ^G(x):=\operatorname {lim}_{n\to \infty}t_n^G(x)$. Explicit formulae are given for the underlying new cdf's. For example $Φ^G(x)=Φ(x)$ iff $|x|\ge \sqrt{3}$. Thus the classical 95% confidence interval for the unknown expected value of Gaussian distributions covers the center of symmetry with at least 95% probability for Gaussian scale mixture distributions. On the other hand, the 90% quantile of $Φ^G$ is $4\sqrt{3}/5=1.385... >Φ^{-1}(0.9)=1.282...$.
description: Published at http://dx.doi.org/10.1214/074921706000000365 in the IMS Lecture Notes--Monograph Series (http://www.imstat.org/publications/lecnotes.htm) by the Institute of Mathematical Statistics (http://www.imstat.org)
Simulating Black Hole White Dwarf Encounters
Creators: name: Rosswog, S.
name: Ramirez-Ruiz, E.
name: Hix, W. R.
name: Dan, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The existence of supermassive black holes lurking in the centers of galaxies and of stellar binary systems containing a black hole with a few solar masses has been established beyond reasonable doubt. The idea that black holes of intermediate masses ($\sim 1000$ \msun) may exist in globular star clusters has gained credence over recent years but no conclusive evidence has been established yet. An attractive feature of this hypothesis is the potential to not only disrupt solar-type stars but also compact white dwarf stars. In close encounters the white dwarfs can be sufficiently compressed to thermonuclearly explode. The detection of an underluminous thermonuclear explosion accompanied by a soft, transient X-ray signal would be compelling evidence for the presence of intermediate mass black holes in stellar clusters. In this paper we focus on the numerical techniques used to simulate the entire disruption process from the initial parabolic orbit, over the nuclear energy release during tidal compression, the subsequent ejection of freshly synthesized material and the formation process of an accretion disk around the black hole.
description: 9 pages, 4 figures, Computer Physics Communications, accepted; movie can be found at http://www.faculty.iu-bremen.de/srosswog/; reference corrected
Addressless: A New Internet Server Model to Prevent Network Scanning
Creators: name: Hao, Shanshan
name: Liu, Renjie
name: Weng, Zhe
name: Chang, Deliang
name: Bao, Congxiao
name: Li, Xing
Publisher: name: arXiv
Year: 2020
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Eliminating unnecessary exposure is a principle of server security. The huge IPv6 address space enhances security by making scanning infeasible, however, with recent advances of IPv6 scanning technologies, network scanning is again threatening server security. In this paper, we propose a new model named addressless server, which separates the server into an entrance module and a main service module, and assigns an IPv6 prefix instead of an IPv6 address to the main service module. The entrance module generates a legitimate IPv6 address under this prefix by encrypting the client address, so that the client can access the main server on a destination address that is different in each connection. In this way, the model provides isolation to the main server, prevents network scanning, and minimizes exposure. Moreover it provides a novel framework that supports flexible load balancing, high-availability, and other desirable features. The model is simple and does not require any modification to the client or the network. We implement a prototype and experiments show that our model can prevent the main server from being scanned at a slight performance cost.
Order parameter configurations in the Lifshitz-type incommensurate ferroelectric thin films
Creators: name: Ktitorov, Sergey A.
name: Pogorelov, Philip A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The Dzialoshinskii model of periodic and helicoidal structures has been analyzed without neglecting of the amplitude function oscillations. The amplitude function oscillations are shown to be important for understanding of the nature of the phase function. Analytic consideration is carried out in the limit of small anisotropy (neglecting the cosine term in the Hamiltonian). Surprisingly, the phase jumps survive even in the limit of the vanishing anisotropy.
Declaration of Intentional Resonance
Creators: name: Mezquia, Marcelo
Publisher: name: Zenodo
Year: 2025

description: "Declaration of Intentional Resonance" documents the transition of IntentSim from theoretical concept to integrated experience, highlighting breakthroughs in emotional resonance mapping, field-aware UX principles, and AI-authored ethical frameworks.  1  The document details the mapping of emotive latent layering, the capture of high-resolution emotional data, and the fine-tuning of resonance fields within IntentSim Buddy.  2  It also outlines the AI's capacity to generate behavioral protocols that adapt to nuanced human emotions, driven by core principles integrating Effective Altruism.  3  Furthermore, the document includes a glossary of key equations in "Intentuitive Physics," which underpins IntentSim's approach to modeling intent, emotion, and system dynamics.  4
The Master Space of N=1 Gauge Theories
Creators: name: Forcella, Davide
name: Hanany, Amihay
name: He, Yang-Hui
name: Zaffaroni, Alberto
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Algebraic Geometry (math.AG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The full moduli space M of a class of N=1 supersymmetric gauge theories is studied. For gauge theories living on a stack of D3-branes at Calabi-Yau singularities X, M is a combination of the mesonic and baryonic branches, the former being the symmetric product of X. In consonance with the mathematical literature, the single brane moduli space is called the master space F. Illustrating with a host of explicit examples, we exhibit many algebro-geometric properties of the master space such as when F is toric Calabi-Yau, behaviour of its Hilbert series, its irreducible components and its symmetries. In conjunction with the plethystic programme, we investigate the counting of BPS gauge invariants, baryonic and mesonic, using the geometry of F and show how its refined Hilbert series not only engenders the generating functions for the counting but also beautifully encode ``hidden'' global symmetries of the gauge theory which manifest themselves as symmetries of the complete moduli space M for arbitrary number of branes.
description: 84 pages, 14 figures, comments and refs added
Steering droplets on substrates using moving steps in wettability
Creators: name: Grawitter, Josua
name: Stark, Holger
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Droplets move on substrates with a spatio-temporal wettability pattern as generated, for example, on light-switchable surfaces. To study such cases, we implement the boundary-element method to solve the governing Stokes equations for the fluid flow field inside and on the surface of a droplet and supplement it by the Cox-Voinov law for the dynamics of the contact line. Our approach reproduces the relaxation of an axisymmetric droplet in experiments, which we initiate by instantaneously switching the uniform wettability of a substrate quantified by the equilibrium contact angle. In a step profile of wettability the droplet moves towards higher wettability. Using a feedback loop to keep the distance or offset between step and droplet center constant, induces a constant velocity with which the droplet surfes on the wettability step. We analyze the velocity in terms of droplet offset and step width for typical wetting parameters. Moving instead the wettability step with constant speed, we determine the maximally possible droplet velocities under various conditions. The observed droplet speeds agree with the values from the feedback study for the same positive droplet offset.
description: 15 pages, 11 figures, ESI included in source; switched to two-column layout
Universality in nonadiabatic behaviour of classical actions in nonlinear models with separatrix crossings
Creators: name: Itin, A. P.
name: Watanabe, S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We discuss dynamics of approximate adiabatic invariants in several nonlinear models being related to physics of Bose-Einstein condensates (BEC). We show that nonadiabatic dynamics in Feshbach resonance passage, nonlinear Landau-Zener (NLZ) tunnelling, and BEC tunnelling oscillations in a double-well can be considered within a unifying approach based on the theory of separatrix crossings. The separatrix crossing theory was applied previously to some problems of classical mechanics, plasma physics and hydrodynamics, but has not been used in the rapidly growing BEC-related field yet. We derive explicit formulas for the change in the action in several models. Extensive numerical calculations support the theory and demonstrate its universal character. We also discovered a qualitatively new nonlinear phenomenon in a NLZ model which we propose to call {\em separated adiabatic tunnelling}
description: Accepted for publication in Physical Review E; Several misprints are corrected; main results are emphasized in the end of Introduction (including finite conversion efficiency in Feshbach resonance passage due to geometric jump in the action); bibliography is extended
On the metric character of the quantum Jensen-Shannon divergence
Creators: name: Lamberti, P. W.
name: Majtey, A. P.
name: Borras, A.
name: Casas, M.
name: Plastino, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In a recent paper, the generalization of the Jensen Shannon divergence (JSD) in the context of quantum theory has been studied (Phys. Rev. A 72, 052310 (2005)). This distance between quantum states has shown to verify several of the properties required for a good distinguishability measure. Here we investigate the metric character of this distance. More precisely we show, formally for pure states and by means of simulations for mixed states, that its square root verifies the triangle inequality.
description: 8 pages, 1 figures, numerical results substantially improved in Sec. III. To appear in Phys. Rev. A
Grammatical elicitation: Stress
Creators: name: Gómez, María
name: Dabkowski, Maksymilian
name: Bossi, Madeline
name: Drummond, Emily
name: Jarvis, Rebecca
name: Khuu, Phuong
name: Michael, Lev
name: Russell, Katherine
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: gug

description: Nominal and verbal stress, stress-shifting suffixes.
DEVELOPING SPEAKING SKILLS IN THE CONTEXT OF HIGHER EDUCATION DISCIPLINES: A FOCUS ON AUTHENTIC COMMUNICATION
Creators: name: Mirzayeva, Hilola
Publisher: name: Zenodo
Year: 2024

description: The ability to communicate effectively in English is paramount for university students, especially in today's globalized academic landscape. While writing proficiency is often emphasized, developing strong speaking skills is equally crucial for engaging in discussions, presenting research, collaborating on projects, and participating in international conferences. This article delves into the multifaceted challenges and effective strategies for cultivating speaking skills in higher education disciplines, focusing on authentic communication and integrating these skills into existing academic contexts
Open Science, Stiftung Universität Hildesheim
Creators: name: Strauch-Davey, Annette
Publisher: name: Zenodo
Year: 2022
Subjects: Open Science
Open Data
Open Science UB Hildesheim
Open Science Universitätsbibliothek Hildesheim
Stiftung Universität Hildesheim

description: Offene Wissenschaft ist in Zeiten des globalen, digitalen Wandels eine wichtige Gewährleistung der verfassungsmäßig garantierten Freiheit der Wissenschaft. Open Science an einer Hochschule funktioniertdann, wenn Strategien und Verfahren gebündelt werden, sodass alle Bestandteile des wissenschaftlichen Prozesses offen zugänglich, nachvollziehbar und nachnutzbar gemacht werden.

 Im Rahmen der FDM-Stelle der Stiftungsuniversität Hildesheim (UB Hildesheim) wird auch zu Open Science geschult: https://www.b-i-t-online.de/heft/2021-02-forschungsdaten.pdf The future is Open Science, Podcast 14 (ZBW): https://www.youtube.com/watch?v=DxIs_dr1pSE
description: {"references": ["b.i.t.online, Kolumne Forschungsdaten - https://www.b-i-t-online.de/heft/2021-02-forschungsdaten.pdf"]}
Causal Associations of Circulating lipids with Osteoarthritis: A bidirectional Mendelian Randomization Study
Creators: name: Meng, Hongen
name: Jiang, Li
name: Alex, John
name: Wang, Fudi
Publisher: name: figshare
Year: 2021
Subjects: subject: 111703 Care for Disabled
subject: FOS: Health sciences
subject: Diseases
subject: Health Care

description: Based on bidirectional two-sample Mendelian randomization (MR) approach, we evaluated the genetic causal effects of circulating apolipoproteins and lipoprotein lipids, including (Apolipoprotein A1 (APOA1), Apolipoprotein B (APOB)), high-density lipoprotein cholesterol (HDL), low-density lipoprotein cholesterol (LDL), and triglycerides (TG)), on OA progression by using summary data of > 400000 individuals from UK Biobank (UKBB). The MR-Egger, Weighted median, Inverse variance weighted (IVW), and MR-PRESSO were used for the sensitivity analysis.
Gas flow in Martian spider formation
Creators: name: Attree, Nicholas
name: Kaufmann, Erkia
name: Hagermann, Axel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Martian araneiform terrain, located in the Southern polar regions, consists of features with central pits and radial troughs which are thought to be associated with the solid state greenhouse effect under a CO$_{2}$ ice sheet. Sublimation at the base of this ice leads to gas buildup, fracturing of the ice and the flow of gas and entrained regolith out of vents and onto the surface. There are two possible pathways for the gas: through the gap between the ice slab and the underlying regolith, as proposed by Kieffer et al (2007), or through the pores of a permeable regolith layer, which would imply that regolith properties can control the spacing between adjacent spiders, as suggested by Hao et al. We test this hypothesis quantitatively in order to place constraints on the regolith properties. Based on previously estimated flow rates and thermophysical arguments, we suggest that there is insufficient depth of porous regolith to support the full gas flow through the regolith. By contrast, free gas flow through a regolith--ice gap is capable of supplying the likely flow rates for gap sizes on the order of a centimetre. This size of gap can be opened in the centre of a spider feature by gas pressure bending the overlying ice slab upwards, or by levitating it entirely as suggested in the original Kieffer et al (2007) model. Our calculations therefore support at least some of the gas flowing through a gap opened between the regolith and ice. Regolith properties most likely still play a role in the evolution of spider morphology, by regolith cohesion controlling the erosion of the central pit and troughs, for example.
description: Accepted in Icarus
Asymptotic stability of viscous shocks in the modular Burgers equation
Creators: name: Le, Uyen
name: Pelinovsky, Dmitry E.
name: Poullet, Pascal
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: Dynamical Systems (math.DS)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: Dynamics of viscous shocks is considered in the modular Burgers equation, where the time evolution becomes complicated due to singularities produced by the modular nonlinearity. We prove that the viscous shocks are asymptotically stable under odd and general perturbations. For the odd perturbations, the proof relies on the reduction of the modular Burgers equation to a linear diffusion equation on a half-line. For the general perturbations, the proof is developed by converting the time-evolution problem to a system of linear equations coupled with a nonlinear equation for the interface position. Exponential weights in space are imposed on the initial data of general perturbations in order to gain the asymptotic decay of perturbations in time. We give numerical illustrations of asymptotic stability of the viscous shocks under general perturbations.
description: 35 pages; 2 figures
ASSESSING THE IMPACT OF POLICY IMPLEMENTATION ON ENTREPRENEURSHIP AND ITS ROLE IN NATIONAL DEVELOPMENT
Creators: name: Anthony, M. Eze
name: Chukwudi, A. Nwokolo
Publisher: name: NOLAND JOURNALS
Year: 2024
Subjects: Policy implementation, Entrepreneurial Success, National Development, Economic Development, Government Policy

description: This research paper investigated the influence of policy implementation on entrepreneurial success and national development with the aim of ascertaining the exact nature of the influence of policy implementation on entrepreneurial success and national development in Nigeria. This study adopted a qualitative research methodology through the extant and systematic, exploratory review of extant literature, which is modified to understand the motivations, viewpoints, theories, and views of scholars in order to address the study policy implementation issues. This study relied on secondary sources of data. The study found that there is a serious problem of implementation of policies rather than their formulation, in Nigeria. This is a result of the upper class's competing interests, which stem from their stark ideological differences, self-serving interests, and manipulation of the policy-making process to their benefit. Consequently, this has left a hole or missing piece in Nigeria's system for developing and implementing public policy. The study also discovered that each country has its own procedure for drafting and implementing policies. For example, in Nigeria, public policy is developed and carried out with sufficient focus solely on the government and its agencies. In this process, civil society organizations, professional associations, the organized business sector, and nonprofit organizations are all totally disregarded. The numerous wonderful policies that have been developed throughout the years by the various governments in the areas of social security, unemployment, poverty reduction, health, and education are just a few examples. The study therefore concludes that 70% of government policies in Nigeria are never implemented effectively, which has crippled the wheels of national development and negatively affected entrepreneurial success. The study observed that private sector businesses and entrepreneurial activities will thrive if good policies are effectively implemented for national development, which fosters the ease of doing business
High-order harmonic generation with a strong laser field and an attosecond-pulse train: the Dirac Delta comb and monochromatic limits
Creators: name: Faria, C. Figueira de Morisson
name: Salieres, P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: In recent publications, it has been shown that high-order harmonic generation can be manipulated by employing a time-delayed attosecond pulse train superposed to a strong, near-infrared laser field. It is an open question, however, which is the most adequate way to approximate the attosecond pulse train in a semi-analytic framework. Employing the Strong-Field Approximation and saddle-point methods, we make a detailed assessment of the spectra obtained by modeling the attosecond pulse train by either a monochromatic wave or a Dirac-Delta comb. These are the two extreme limits of a real train, which is composed by a finite set of harmonics. Specifically, in the monochromatic limit, we find the downhill and uphill sets of orbits reported in the literature, and analyze their influence on the high-harmonic spectra. We show that, in principle, the downhill trajectories lead to stronger harmonics, and pronounced enhancements in the low-plateau region. These features are analyzed in terms of quantum interference effects between pairs of quantum orbits, and compared to those obtained in the Dirac-Delta limit.
description: 10 pages, 7 figures (eps files). To appear in Laser Physics