cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
RKKY interaction between adsorbed magnetic impurities in graphene: symmetry and strain effects
Creators: name: Gorman, P. D.
name: Duffy, J. M.
name: Ferreira, M. S.
name: Power, S. R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The growing interest in carbon-based spintronics has stimulated a number of recent theoretical studies on the RKKY interaction in graphene, with the aim of determining the most energetically favourable alignments between embedded magnetic moments. The RKKY interaction in undoped graphene decays faster than expected for conventional two-dimensional materials and recent studies suggest that the adsorption configurations favoured by many transition-metal impurities may lead to even shorter ranged decays and possible sign-changing oscillations. Here we show that these features emerge in a mathematically transparent manner when the symmetry of the configurations is included in the calculation. Furthermore, we show that by breaking the symmetry of the graphene lattice, via uniaxial strain, the decay rate, and hence the range, of the RKKY interaction can be significantly altered. Our results suggest that magnetic interactions between adsorbed impurities in graphene can be manipulated by careful strain engineering of such systems.
description: 12 pages, 6 figures, submitted
Using Expressive Writing and Telling in GBV programs: A Training Curriculum for Social Workers and Human Rights Defenders
Creators: name: Campbell, Siobhan
name: Jensen, Meg
Publisher: name: The Open University
Year: 2022
Subjects: Human rights and justice issues (excl. law)
Community and primary care
Other creative arts and writing not elsewhere classified
Vocational education and training curriculum and pedagogy

description: The COVID-19 pandemic has exacerbated the gender inequalities in Lebanon and further exposed the weak protection system for women and girls.
 With the restriction of movement and confinement to homes, there is the risk that the majority of cases of GBV remain unreported and unrecognised.
 As part of the AHRC project 'Expressive Writing and Telling in Crisis, Lebanon', the NGO, Akkar Network for development, explored how Expressive Writing and Telling could be a tool for combatting the silences around GBV during and after Covid 19.
 This is the training curriculm which AND co-developed with UK-based researchers in Expressive Writing and Telling. It sets out the background, contexts and approaches of EWT, giving instruction and support to implementers, along with a full set of workshop exercises, consent forms and adaptable feedback options.
 AND NGO report that EWT builds trust, establishes relationship (even when online or on the phone) and has built-in mechanisms for protection. It enables the eliciting of personal experience which can support other GBV mitigation mechanisms. The refinement by AND of this training program enbles it for use in other arenas.
Exact solutions to relativistic singular fractional power potentials
Creators: name: Agboola, Davids
name: Zhang, Yao-Zhong
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present (exact) solutions of the Dirac equation with equally mixed interactions for a single fermion bounded by the family of fractional power singular potentials. Closed-form expressions as well as numerical values for the energies were obtained. The wave functions and the allowed values of the potential parameters for the first two members of the family are obtained in terms of a set of algebraic equations. The non relativistic limit is also discussed and using the Hellmann-Feynmann theorem, some useful expectation values are obtained.
description: 15 Pages, 16 Figures, 2 Tables. In press JPA
KlepeisCIG2020.pptx
Creators: name: Klepeis, Keith A.
name: Schwartz, Joshua J.
name: Miranda, Elena
Publisher: name: Tectonics Community Science Workshop 2020
Year: 2020
Subjects: subject: 40402 Geodynamics
subject: FOS: Earth and related environmental sciences
subject: Geology
subject: 40312 Structural Geology
subject: 40313 Tectonics

description: The Fiordland and Stewart Island regions of SW New Zealand preserve a complete section of Cretaceous continental crust from depths of ~5 to ~65 km. These exposures allow us to directly observe how shear zone architecture and strain localization processes changed by depth within the crustal section.
A real-time simulation facility for astronomical adaptive optics
Creators: name: Basden, Alastair
Publisher: name: arXiv
Year: 2014
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: In this paper we introduce the concept of real-time hardware-in-the-loop simulation for astronomical adaptive optics, and present the case for the requirement for such a facility. This real-time simulation, when linked with an adaptive optics real-time control system, provides an essential tool for the validation, verification and integration of the Extremely Large Telescope real-time control systems prior to commissioning at the telescope. We demonstrate that such a facility is crucial for the success of the future extremely large telescopes.
description: Accepted for publication in MNRAS
Contribution of twist-3 fragmentation function to single transverse-spin asymmetry in semi-inclusive deep inelastic scattering
Creators: name: Kanazawa, Koichi
name: Koike, Yuji
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the contribution of the twist-3 fragmentation function to the single-transverse spin asymmetry in semi-inclusive deep inelastic scattering within the framework of the collinear factorization. Making use of the Ward-Takahashi identity in QCD, we establish the formalism in the Feynman gauge to calculate the non-pole contribution of the twist-3 fragmentation function to the asymmetry and derive the complete cross-section formula in the leading order QCD perturbation theory. The obtained twist-3 hadronic tensor is shown to satisfy the electromagnetic gauge-invariance. The behavior in the small transverse- momentum region for the five structure functions is also given.
description: 26 pages, 3 figures
Expressive Telling in Crisis - a PSS program for online, on-phone or in-person delivery by NGOs and Care Providers
Creators: name: Campbell, Siobhan
name: Jensen, Meg
name: Blackburn-Daniels, Sally
Publisher: name: The Open University
Year: 2022
Subjects: Counselling, wellbeing and community services
Other creative arts and writing not elsewhere classified
Humanitarian disasters, conflict and peacebuilding

description: Expressive Telling in crisis - a PSS toolkit presents a set of expressive telling approaches and exercises for use on the phone, using WhatsApp or other services, especially when in crisis situations. Adapted for use by Akkar Network for Development NGO, Lebanon, and piloted by that NGO, these exercises allow for the rapid building of trust, and for a relational understanding to develop between social worker and participant which can lead to better outcomes in terms of understandings and ability to provide targeted care. Adaptable for other crisis situations, these exercises complement the longer version of Expressive Writing and Telling which is also available on request.
Nonlinear Response in the Driven Lattice Lorentz Gas
Creators: name: Leitmann, Sebastian
name: Franosch, Thomas
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We determine the nonlinear time-dependent response of a tracer on a lattice with randomly distributed hard obstacles as a force is switched on. The calculation is exact to first order in the obstacle density and holds for arbitrarily large forces. Whereas, on the impurity-free lattice, the nonlinear drift velocity in the stationary state is analytic in the driving force, interactions with impurities introduce logarithmic contributions beyond the linear regime. The long-time decay of the velocity toward the steady state is exponentially fast for any finite value of the force, in striking contrast to the power-law relaxation predicted within linear response. We discuss the range of validity of our analytic results by comparison to stochastic simulations.
description: 9 pages, Physical Review Letters, includes Supplemental Material
Repetability for "Verification and Parameter Synthesis for Real-Time Programs using Refinement of Trace Abstraction"
Creators: name: Jensen, Peter Gjøl
name: Cassez, Franck
name: Larsen, Kim Guldstrand
Publisher: name: Zenodo
Year: 2020
Subjects: Trace Abstraction Refinement, Timed Automata, Parametric, Hybrid Automata, Synthesis, Robustness

description: The repeatability package is only available on Linux.
 It has been tested on Fedora 32. Contents binaries contains the symrob, rttar and imitator binaries needed, robustness contains all the models for the robustness experiments, parametric contains all the models for the parametric experiments, results contains a pre-computed set of results that will be overwritten when re-running the experiments, and the root contains run_*.sh files for running the appropriate experiments and extract_*.sh files for extracting the result-tables in latex form from the raw output of the binaries. The pre-populated results were computed on AMD EPYC 7551 processors. Running experiments To run a test-set, execute ./run_X.sh binaries/Y where X is replaced by either parametric or robust and Y is a valid binary from the binary folder. E.g. to run the parametric test-series using rttar, execute the following: ./run_parametric.sh ./binaries/rttar_parametric If a slurm-enabled compute-cluster is available a concurrent execution can be conducted by first executing the following export: export EXECUTOR=sbatch After a successful execution, results can be extracted by calling ./extract_parametric.sh  which outputs an entire latex document to standard out.
AGILE 4.0 Models of Application "Manufacturing"
Creators: name: Bruggeman, Anne-Liza
name: van der Laan, Ton
name: Sonneveld, Jente
name: La Rocca, Gianfranco
Publisher: name: Zenodo
Year: 2023

description: This page contains the models produced during the development of the Application Case "Manufacturing", addressed in the H2020 AGILE 4.0 Project. The models include: - Stakeholders, Needs and Requirements as a Papyrus project - Scenarios as a Capella project - System Architectures (as HTML files) - MDO formulations (as XDSM in HTML files) - MDO results (as CPACS files, tables) More information about the Application Case "Manufacturing" can be found here.
Dynamics of line plumes on horizontal surfaces in turbulent convection
Creators: name: Gunasegarane, G. S.
name: Puthenveettil, Baburaj A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We study the dynamics of line plumes on the bottom plate in turbulent convection over six decades of Rayleigh number $(10^5
description: 36 pages, submitted to Journal of Fluid Mechanics
PALM-3000: Exoplanet Adaptive Optics for the 5-meter Hale Telescope
Creators: name: Dekany, R.
name: Roberts, J.
name: Burruss, R.
name: Bouchez, A.
name: Truong, T.
name: Baranec, C.
name: Guiwits, S.
name: Hale, D.
name: Angione, J.
name: Trinh, T.
name: Zolkower, J.
name: Shelton, J. C.
name: Palmer, D.
name: Henning, J.
name: Croner, E.
name: Troy, M.
name: McKenna, D.
name: Tesch, J.
name: Hildebrandt, S.
name: Milburn, J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We describe and report first results from PALM-3000, the second-generation astronomical adaptive optics facility for the 5.1-m Hale telescope at Palomar Observatory. PALM-3000 has been engineered for high-contrast imaging and emission spectroscopy of brown dwarfs and large planetary mass bodies at near-infrared wavelengths around bright stars, but also supports general natural guide star use to V ~ 17. Using its unique 66 x 66 actuator deformable mirror, PALM-3000 has thus far demonstrated residual wavefront errors of 141 nm RMS under 1 arcsecond seeing conditions. PALM-3000 can provide phase conjugation correction over a 6.4 x 6.4 arcsecond working region at an observing wavelength of 2.2 microns, or full electric field (amplitude and phase) correction over approximately one half of this field. With optimized back-end instrumentation, PALM-3000 is designed to enable as high as 10e-7 contrast at ~1 arc second angular separation, after including post-observation speckle suppression processing. While optimization of the adaptive optics system is ongoing, we have already successfully commissioned five back-end science instruments and begun a major exoplanet characterization survey, Project 1640, with our partners at American Museum of Natural History and Jet Propulsion Laboratory.
description: 13 pages, 6 figures, 5 tables; Accepted for publication in the Astrophysical Journal
Analysis of Wind Flow Around a Curved Building with GASCANS
Creators: name: Kappillil Rajeev, Rohin
Publisher: name: Zenodo
Year: 2023

description: This paper looks at the efficacy of the Lattice Boltzmann method (LBM) based GPU-accelerated solver for coupled approaches to Navier Stokes (GASCANS) developed at The University of Manchester to numerically model the flow around a complex curved building such as a curved dome. The airflow around a 1:54 scale model of a domed structure in a fully developed atmospheric boundary layer is simulated. The LBM results were validated using experimental data and numerical results from Rahmatmand et al (2014). GASCANS produces accurate results compared to experiment data, but has some discrepancies. Flow features such as flow separation and recirculation are not accurately predicted. A higher grid resolution, addition of wall functions and introduction of turbulence at the inlet might help in improving the accuracy of results.
Scaling theory vs exact numerical results for spinless resonant level model
Creators: name: Kiss, Annamaria
name: Otsuki, Junya
name: Kuramoto, Yoshio
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The continuous-time quantum Monte Carlo method is applied to the interacting resonant level model (IRLM) using double expansion with respect to Coulomb interaction Ufc and hybridization V. Thermodynamics of the IRLM without spin is equivalent to the anisotropic Kondo model in the low-energy limit. Exact dynamics and thermodynamics of the IRLM are derived numerically for a wide range of Ufc with a given value of V. For negative Ufc, excellent agreement including a quantum critical point is found with a simple scaling formula that deals with V in the lowest-order, and Ufc up to infinite order. As Ufc becomes positive and large, lower order scaling results deviate from exact numerical results. Possible relevance of the results is discussed to certain Samarium compounds with unusual heavy-fermion behavior.
description: 9 pages, 8 figures
Probing the States of Matter in QCD
Creators: name: Satz, Helmut
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The ultimate aim of high energy heavy ion collisions is to study quark deconfinement and the quark-gluon plasma predicted by quantum chromodynamics. This requires the identification of observables calculable in QCD and measurable in heavy ion collisions. I concentrate on three such phenomena, related to specific features of strongly interacting matter. The observed pattern of hadrosynthesis corresponds to that of an ideal resonance gas in equilibrium at the pseudo-critical temperature determined in QCD. The critical behavior of QCD is encoded in the fluctuation patterns of conserved quantum numbers, which are presently being measured. The temperature of the quark-gluon plasma can be determined by the dissociation patterns of the different quarkonium states, now under study at the LHC for both charmonia and bottomonia.
description: 20 pages, 14 figures; survey talk given at the 26th International Symosium on Lepton-Photon Interactions at High Energies, San Francisco, California, USA, June 24 - 29, 2013
Stacking for multimodal posterior distributions
Creators: name: Yao, Yuling
name: Vehtari, Aki
name: Gelman, Andrew
Publisher: name: Zenodo
Year: 2019

description: When working with multimodal posterior distributions, MCMC algorithms can have difficulty moving between modes, and default variational or mode-based approximate inferences can understate posterior uncertainty. And, even if the most important modes can be found, it is difficult to evaluate their relative weights in the posterior, which requires computing the integral of the posterior in the neighborhood of each mode. Here we propose an alternative approach, using parallel runs of MCMC, variational, or mode- based inferences to hit as many modes as possible, and then using Bayesian stacking to weight the set of simulations at each mode. Bayesian stacking is a method for constructing a weighted average of distributions so as to minimize cross-validated prediction errors. The result from stacking is not necessarily equivalent, even asymptotically, to fully Bayesian inference, but it serves many of the same goals. We discuss in the context of several theoretical and applied examples.
An Identification System Using Eye Detection Based On Wavelets And Neural Networks
Creators: name: El-Sayed, Mohamed A.
name: Khafagy, Mohamed A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: The randomness and uniqueness of human eye patterns is a major breakthrough in the search for quicker, easier and highly reliable forms of automatic human identification. It is being used extensively in security solutions. This includes access control to physical facilities, security systems and information databases, Suspect tracking, surveillance and intrusion detection and by various Intelligence agencies through out the world. We use the advantage of human eye uniqueness to identify people and approve its validity as a biometric. . Eye detection involves first extracting the eye from a digital face image, and then encoding the unique patterns of the eye in such a way that they can be compared with pre-registered eye patterns. The eye detection system consists of an automatic segmentation system that is based on the wavelet transform, and then the Wavelet analysis is used as a pre-processor for a back propagation neural network with conjugate gradient learning. The inputs to the neural network are the wavelet maxima neighborhood coefficients of face images at a particular scale. The output of the neural network is the classification of the input into an eye or non-eye region. An accuracy of 90% is observed for identifying test images under different conditions included in training stage.
description: Mohamed A. El-Sayed and Mohamed A. Khafagy, An Identification System Using Eye Detection Based On Wavelets And Neural Networks. International Journal Of Computer And Information Technology. Vol. 1, No. 2, pp. 43-48, 2012. arXiv admin note: text overlap with arXiv:1205.5097 by other authors without attribution
How Does Kanban Impact Communication and Collaboration in Software Engineering Teams?
Creators: name: Oza, Nilay
name: Fagerholm, Fabian
name: Münch, Jürgen
Publisher: name: arXiv
Year: 2013
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Highly iterative development processes such as Kanban have gained significant importance in industry. However, the impact of such processes on team collaboration and communication is widely unknown. In this paper, we analyze how the Kanban process aids software team's behaviours -- in particular, communication and collaboration. The team under study developed a mobile payment software product in six iterations over seven weeks. The data were collected by a questionnaire, repeated at the end of each iteration. The results indicate that Kanban has a positive effect at the beginning to get the team working together to identify and coordinate the work. Later phases, when the team members have established good rapport among them, the importance for facilitating team collaboration could not be shown. Results also indicate that Kanban helps team members to collectively identify and surface the missing tasks to keep the pace of the development harmonized across the whole team, resulting into increased collaboration. Besides presenting the study and the results, the article gives an outlook on future work.
description: 5 pages. The final publication is available at http://ieeexplore.ieee.org. DOI: 10.1109/CHASE.2013.6614747, http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6614747
Evidence of Phylosymbiosis in Formica Ants
Creators: name: , Jackson
Publisher: name: Zenodo
Year: 2023

description: Code written to analyse the data presented in the paper "Evidence of phylosymbiosis in Formica Ants". Analysis.R was written and run in RStudio version 3.5.2. The two .sh scripts are bash scripts which specify the software versions they are running within the scripts. The code is commented to specify what is happening in each bit, if you have any questions let me know. -Raphaella Jackson
Double-stranded RNA prevents and cures infection by rust fungi
Creators: name: Degnan, Rebecca
name: Shuey, Louise
name: Radford-Smith, Julian
name: Gardiner, Donald
name: Carroll, Bernard
name: Mitter, Neena
name: McTaggart, Alistair
name: Sawyer, Anne
Publisher: name: Zenodo
Year: 2023
Subjects: dsRNA
rust fungi
myrtle rust
RNAi
conservation

description: Raw data of all in planta raw disease coverage, raw plant health ratings, and raw LICOR measurements. Raw/ original macro and microscopic images of all plants, urediniospores, and fungal growth used for figures.
Hubble Space Telescope and Ground-Based Observations of V455 Andromedae Post-Outburst
Creators: name: Szkody, Paula
name: Mukadam, Anjum S.
name: Gaensicke, Boris T.
name: Henden, Arne
name: Sion, Edward M.
name: Townsley, Dean M.
name: Christian, Damian
name: Falcon, Ross E.
name: Pyrzas, Stylianos
name: Brown, Justin
name: Funkhouser, Kelsey
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Hubble Space Telescope spectra obtained in 2010 and 2011, three and four years after the large amplitude dwarf nova outburst of V455 And, were combined with optical photometry and spectra to study the cooling of the white dwarf, its spin, and possible pulsation periods after the outburst. The modeling of the ultraviolet (UV) spectra show that the white dwarf temperature remains ~600 K hotter than its quiescent value at three years post outburst, and still a few hundred degrees hotter at four years post outburst. The white dwarf spin at 67.6 s and its second harmonic at 33.8 s are visible in the optical within a month of outburst and are obvious in the later UV observations in the shortest wavelength continuum and the UV emission lines, indicating an origin in high temperature regions near the accretion curtains. The UV light curves folded on the spin period show a double-humped modulation consistent with two-pole accretion. The optical photometry two years after outburst shows a group of frequencies present at shorter periods (250-263 s) than the periods ascribed to pulsation at quiescence, and these gradually shift toward the quiescent frequencies (300-360 s) as time progresses past outburst. The most surprising result is that the frequencies near this period in the UV data are only prominent in the emission lines, not the UV continuum, implying an origin away from the white dwarf photosphere. Thus, the connection of this group of periods with non-radial pulsations of the white dwarf remains elusive.
description: 18 pages, 14 figs; accepted for ApJ
Initial Conditions for Modified DGLAP Evolution of the Modified Fragmentation Functions in Nuclear Medium
Creators: name: Chang, Ning-Bo
name: Deng, Wei-Tian
name: Wang, Xin-Nian
Publisher: name: arXiv
Year: 2014
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Initial conditions are required to solve medium modified DGLAP (mDGLAP) evolution equations for modified fragmentation functions due to multiple scatterings and parton energy loss. Such initial conditions should in principle include energy loss for partons at scale $Q_0$ above which mDGLAP evolution equations can be applied. Several models for the initial condition motivated by induced gluon bremsstrahlung in perturbative QCD are used to calculate the modified fragmentation functions in nuclear medium and to extract the jet transport parameter $\hat q$ from fits to experimental data in deeply inelastic scattering (DIS) off nuclei. The model with a Poisson convolution of multiple gluon emissions is found to provide the overall best $χ^2$/d.o.f. fit to the HERMES data and gives a value of $\hat q_0 \approx 0.020 \pm 0.005$ GeV$^2$/fm at the center of a large nucleus.
description: 9 pages in RevTex, 9 figures
MPEC 2023-V84 : 2023 VM2
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 VM2

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Finite-time thermodynamics of port-Hamiltonian systems
Creators: name: Delvenne, Jean-Charles
name: Sandberg, Henrik
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Dynamical Systems (math.DS)
subject: Optimization and Control (math.OC)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: In this paper, we identify a class of time-varying port-Hamiltonian systems that is suitable for studying problems at the intersection of statistical mechanics and control of physical systems. Those port-Hamiltonian systems are able to modify their internal structure as well as their interconnection with the environment over time. The framework allows us to prove the First and Second laws of thermodynamics, but also lets us apply results from optimal and stochastic control theory to physical systems. In particular, we show how to use linear control theory to optimally extract work from a single heat source over a finite time interval in the manner of Maxwell's demon. Furthermore, the optimal controller is a time-varying port-Hamiltonian system, which can be physically implemented as a variable linear capacitor and transformer. We also use the theory to design a heat engine operating between two heat sources in finite-time Carnot-like cycles of maximum power, and we compare those two heat engines.
description: To appear in Physica D (accepted July 2013)
Effect of grain disorientation on early fatigue crack propagation in face-centred-cubic polycristals: A three-dimensional dislocation dynamics investigation
Creators: name: Reddy, Gv Prasad
name: Robertson, Christian
name: depres, christophe
name: Fivel, Marc
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Three-dimensional dislocation dynamics simulations are used to study micro-crack interaction with the first micro-structural barrier in face-centred cubic bi-crystals loaded in high cycle fatigue conditions. In the examined configuration, we assumed that micro-crack transmission occurs due to surface relief growth in the secondary grain ahead of the primary crack. This indirect transmission mechanism is shown to strongly depend on grain-1/grain-2 disorientation. For instance, small grain disorientation induces plastic strain localisation ahead of the crack and faster transmission through the first barrier. Conversely, large grain-1/grain-2 disorientation induces plastic strain spreading similar to crack tip blunting yielding slower indirect transmission. A semi-analytical micro-model is developed based on the present simulation results and complementary experimental observations highlighting the original notion of first-barrier compliance. The model captures well known experimental trends including effects of: grain-size, grain disorientation and micro-crack retardation at the first barrier.
Taking the Skeletons Out of the Closet: Contested Authority and Human Remains Displays in the Anthropology Museum
Creators: name: Jacobs, Iris
Publisher: name: University of Chicago
Year: 2020
Subjects: subject: The Field Museum
subject: World's Columbian Exposition
subject: Museum of Science and Industry
subject: Human Remains

description: Museum exhibits, as showcases of what is deemed worth seeing at a period in time, reflect societal biases, political influences, and authority-making processes. The museum’s ability to confer social authority is especially important in the communication of scientific meaning through displays of human remains. Exhibits of human remains in anthropological collections have posed numerous contentious issues in representation, with debates centering around who can claim ownership of the body on public display, and the narrative underlying those bodies. Claimants in this debate include descendants of displayed individuals; scientists who assert their right to generate knowledge on behalf of humanity by studying and displaying these bodies; museums who defend their position as stewards of cultural heritage; landowners or nation-states in which these bodies were found; and lawmakers that preside over these bodies, who hold the authority to broker compromise between the other claimants. Through personal interviews with a variety of claimants, this thesis traces anthropological displays of the human body at the Field Museum, starting from the World’s Fair of 1893 to repatriations and paleoanthropological exhibits of the current day. This examination aims to ground the global debate in one specific site of contestation. Towards that aim, this thesis culturally contextualizes human remains displays, examines tensions between public spectacle and scientific communication, and discusses how authority is expressed through the medium of the body. These themes reflect how human identities, both social and scientific, are shaped by the bodies on display at the anthropology museum.
Plasma Physics of Extreme Astrophysical Environments
Creators: name: Uzdensky, Dmitri A.
name: Rightley, Shane
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Certain classes of astrophysical objects, namely magnetars and central engines of supernovae and gamma-ray bursts (GRBs), are characterized by extreme physical conditions not encountered elsewhere in the Universe. In particular, they possess magnetic fields that exceed the critical quantum field of 44 teragauss. Figuring out how these complex ultra-magnetized systems work requires understanding various plasma processes, both small-scale kinetic and large-scale magnetohydrodynamic (MHD). However, an ultra-strong magnetic field modifies the underlying physics to such an extent that many relevant plasma-physical problems call for building QED-based relativistic quantum plasma physics. In this review, after describing the extreme astrophysical systems of interest and identifying the key relevant plasma-physical problems, we survey the recent progress in the development of such a theory. We discuss how a super-critical field modifies the properties of vacuum and matter and outline the basic theoretical framework for describing both non-relativistic and relativistic quantum plasmas. We then turn to astrophysical applications of relativistic QED plasma physics relevant to magnetar magnetospheres and central engines of supernovae and long GRBs. Specifically, we discuss propagation of light through a magnetar magnetosphere; large-scale MHD processes driving magnetar activity and GRB jet launching and propagation; energy-transport processes governing the thermodynamics of extreme plasma environments; micro-scale kinetic plasma processes important in the interaction of intense magnetospheric electric currents with a magnetar's surface; and magnetic reconnection of ultra-strong magnetic fields. Finally, we point out that future progress will require the development of numerical modeling capabilities.
description: 56 pages, 1 figure. Invited review accepted for publication in Reports on Progress in Physics
Star edge coloring of some classes of graphs
Creators: name: Bezegová, Ľudmila
name: Lužar, Borut
name: Mockovčiaková, Martina
name: Soták, Roman
name: Škrekovski, Riste
Publisher: name: arXiv
Year: 2013
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C15, 05C05

description: \textit{A star edge coloring} of a graph is a proper edge coloring without bichromatic paths and cycles of length four. In this paper we establish tight upper bounds for trees and subcubic outerplanar graphs, and derive an upper bound for outerplanar graphs.
The Positionality of Global Historians: A Methodological Review
Creators: name: McQuillan, Aoibhín
Publisher: name: Global Histories: A Student Journal
Year: 2023

description: This paper questions the perceived strengths and weaknesses of topical ‘closeness’ when comparing, analysing, reviewing, or recording histories that relate to the historian as both a commentator upon and an actor within history. Discussing the trends of historian involvement within global history, the shortcomings of the field, and the divisions that remain, this paper questions the act of ‘disconnecting’ global historians from the topics they explore. This paper uses the conclusions drawn by other global historians to explore how positionality impeded or facilitated their research. Referencing the works and positionalities of other global historians such as Martineau, Leake, Kalter, and Masashi, this paper concludes that alternative intellectual definitions of global history add nuance to these variations of approach but do not undermine the role of the historian as an actor and, therefore, the inherent need to contextualise the authorial voice, regardless of spatial or topical closeness.
description: Global Histories: A Student Journal, Vol. 8 No. 2 (2022): Global histories 8 (2)
Habsburgs in the Indian Ocean. A Commercial History of the Austrian East India Company and its Colonies and Bases in East Africa, India, and China, 1775–1785
Creators: name: Ambach, Florian
Publisher: name: Global Histories: A Student Journal
Year: 2023

description: The study of the Habsburg monarchy’s colonial past and global interconnections is a comparatively young field of research, traditionally understudied as it did not fit into the Austrian narrative of colonial disentanglement. The following paper offers new understandings of the history of the Habsburg monarchy within a global framework by focusing on the Habsburg East India Company of Trieste-Antwerp (1775–1785). In contrast to previous studies of their political dimensions, this article focuses mainly on the commercial actions of the company. Ship inventories, invoices, logbooks, letters, diaries, reports, and petitions from the archives of Vienna provide valuable insights into the everyday life of the Company. Raw materials and products can serve as probes of transcontinental linkages to bring into focus the economic and political contexts and the histories of people who produced, cultivated, processed, transported, and traded with them. But beyond that, the company trade of enslaved people constituted a key part of the company’s commercial endeavors. Based on these theoretical and methodological considerations, the goods and people shipped by the Company sheds light on aspects of global trade and colonization projects of the Habsburg monarchy and can be used as a touchstone by which the national-historical perspective is challenged. Ship inventories, invoices, logbooks, letters, diaries, reports, and petitions from the archives of Vienna and Trieste provide valuable insights into the everyday life of the Habsburg East India Companies. Raw materials and products can serve as probes of transcontinental linkages to bring into focus the economic, political, diplomatic, and cultural contexts and the histories of people who produced, cultivated, processed, transported, traded with, and researched about them. Based on these theoretical and methodological considerations, the materiality of the Habsburg East India Companies sheds light on aspects of global trade and colonisation projects of the Habsburg monarchy and can be used as a touchstone by which the national-historical perspective is challenged by the investigation of global flows of goods, information channels, and entanglements with East Africa, the East Indies and China
description: Global Histories: A Student Journal, Vol. 8 No. 2 (2022): Global histories 8 (2)
Opportunistic Spectrum Sensing and Transmissions
Creators: name: Alam, Sk. Shariful
name: Marcenaro, Lucio
name: Regazzoni, Carlo
Publisher: name: arXiv
Year: 2013
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Emerging Technologies (cs.ET)
subject: FOS: Computer and information sciences

description: Nowadays, cognitive radio is one of the most promising paradigms in the arena of wireless communications, as it aims at the proficient use of radio resources. Proper utilization of the radio spectrum requires dynamic spectrum accessing. To this end, spectrum sensing is undoubtedly necessary. In this chapter, various approaches for dynamic spectrum access scheme are presented, together with a survey of spectrum sensing methodologies for cognitive radio. Moreover, the challenges are analyzed that are associated with spectrum sensing and dynamic spectrum access techniques. Sensing beacon transmitted from different cognitive terminals creates significant interference to the primary users if proper precautions have not be not taken into consideration. Consequently, cognitive radio transmitter power control will be finally addressed to analyze energy efficiency aspects.
“Cairo is the Main Castle of Islam”: Kaiserswerth Deaconesses’ Nursing in Nineteenth Century Egypt and the Importance of Converting Muslims
Creators: name: Ashour, Rania
Publisher: name: Global Histories: A Student Journal
Year: 2023

description: Research on the Kaiserswerth Deaconess Institution’s ‘home mission’ (Innere Mission) abroad has long assumed that the conversion of non-Christians played a subordinate role compared to the evangelisation of the Christian population. The recent example of the Kaiserswerth mission in the Middle East and the analysis of the encounter between deaconesses and locals has shown that this was not necessarily the case. This article joins the new research trend and examines the context of the missionary efforts towards Muslims in Protestant hospitals in Egypt from the middle of the nineteenth century. As a contribution to global history, this paper includes the perspective of the non-Christians living in Egypt, especially Muslims, and their interactions with the German missionaries. This study finds that some actors of the Kaiserswerth Deaconess Institute, including the deaconesses, had more agency over the practice of the missionary work than the mission’s founder Theodor Fliedner, specifically seeking to convert Muslims. In addition, by examining the motherhouse journal of the deaconesses, this study demonstrates that Egyptian Muslims were not merely passive receptors of conversion efforts, but also actors who supported or rejected the missionary hospitals.
description: Global Histories: A Student Journal, Vol. 8 No. 2 (2022): Global histories 8 (2)
Domain walls in the coupled Gross-Pitaevskii equations
Creators: name: Alama, Stan
name: Bronsard, Lia
name: Contreras, Andres
name: Pelinovsky, Dmitry
Publisher: name: arXiv
Year: 2013
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: A thorough study of domain wall solutions in coupled Gross-Pitaevskii equations on the real line is carried out including existence of these solutions; their spectral and nonlinear stability; their persistence and stability under a small localized potential. The proof of existence is variational and is presented in a general framework: we show that the domain wall solutions are energy minimizing within a class of vector-valued functions with nontrivial conditions at infinity. The admissible energy functionals include those corresponding to coupled Gross--Pitaevskii equations, arising in modeling of Bose-Einstein condensates. The results on spectral and nonlinear stability follow from properties of the linearized operator about the domain wall. The methods apply to many systems of interest and integrability is not germane to our analysis. Finally, sufficient conditions for persistence and stability of domain wall solutions are obtained to show that stable pinning occurs near maxima of the potential, thus giving rigorous justification to earlier results in the physics literature.
Efficient simulation of the Ginibre point process
Creators: name: Decreusefond, Laurent
name: Flint, Ian
name: Vergne, Anaïs
Publisher: name: arXiv
Year: 2013
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: The Ginibre point process is one of the main examples of deter- minantal point processes on the complex plane. It forms a recurring model in stochastic matrix theory as well as in pratical applications. However, this model has mostly been studied from a probabilistic point of view in the fields of stochastic matrices and determinantal point processes, and thus using the Ginibre process to model random phenomena is a topic which is for the most part unexplored. In order to obtain a determinantal point process more suited for simulation, we introduce a modified version of the classical kernel. Then, we compare three different methods to simulate the Ginibre point process and discuss the most efficient one depending on the application at hand.
ExoMol line lists III: An improved hot rotation-vibration line list for HCN and HNC
Creators: name: Barber, R. J.
name: Strange, J. K.
name: Hill, C.
name: Polyansky, O. L.
name: Mellau, G. Ch.
name: Yurchenko, S. N.
name: Tennyson, Jonathan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: A revised rotation-vibration line list for the combined hydrogen cyanide (HCN) / hydrogen isocyanide (HNC) system is presented. The line list uses {\it ab initio} transition intensities calculated previously (Harris et al., ApJ, 2002, 578, 657) and extensive datasets of recently measured experimental energy levels (Mellau, J. Chem. Phys. and J. Mol. Spectrosc. 2010-2011). The resulting line list has significantly more accurate wavelengths than previous ones for these systems. An improved value for the separation between HCN and HNC is adopted leading to an approximately 25%\ lower predicted thermal population of HNC as a function of temperature in the key 2000 to 3000 K region. Temperature-dependent partition functions and equilibrium constants are presented. The line lists are validated by comparison with laboratory spectra and are presented in full as supplementary data to the article and at \url{www.exomol.com}.
description: MNRAS, in press
Between Obligation and Refuge. Emotional Place Attachment and Sayyida Sālme’s/Emily Ruete’s Migration to Germany
Creators: name: Krause, Katharina
Publisher: name: Global Histories: A Student Journal
Year: 2023

description: Informed by perspectives from Migration Studies and Emotional Geography, this article investigates the nexus between emotion, migration, and space and sets out a possible roadmap for future historiographical analyses of migrants’ place attachment. To this end, I engage the self-narratives of Sayyida Sālme bint Saʿīd/Emily Ruete as sources of an Omani Zanzibari individual’s experience in Germany during the late nineteenth century. I argue that the emotional reactions to her spatial and social environment in Germany were impacted by both its foreignness as well as prevalent contemporary Orientalist and racialized discourses. The ambiguous emotions triggered by her migration were mitigated by her German husband, who functioned as a translator of the new environment and customs, as well as her continued attachment to Zanzibar, which she reinforced through practices of remembrance and writing. Overall, her emotions towards Germany and Zanzibar mirrored the overarching colonial context in which they were felt in and, while being linked to certain material spaces and objects, were marked by their association with obligation to her husband and memories that misaligned with (spatial) reality. Her case and the analytical lens suggested in this article serve as a vignette for writing an aggregate emotional history of migration that broadens our understanding of the historical processes of global entanglement from below.
description: Global Histories: A Student Journal, Vol. 8 No. 2 (2022): Global histories 8 (2)
Retracing some paths in Process Algebra
Creators: name: Abramsky, Samson
Publisher: name: arXiv
Year: 2014
Subjects: subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences

description: We use traced monoidal categories to give a precise general version of "geometry of interaction". We give a number of examples of both "particle-style" and "wave-style" instances of this construction. We relate these ideas to semantics of computation.
description: 17 pages
Re-fashioning Modernity. A comparative study of the flapper and kanga and their relation with modernity
Creators: name: Testini, Barbara
Publisher: name: Global Histories: A Student Journal
Year: 2023

description: Starting with the definition proposed by the Modern Girl Around the World Research Group (MGRG) in their 2008 book The Modern Girl Around the World, this paper aims to deconstruct Eurocentric narratives often attached to the concept of modernity in relation to fashion. [1] It achieves this through a comparative analysis of visual iconography depicting the figures of the flapper and of urban women wearing kanga in the Zanzibari post-abolitionist society of the 1890s. Employing methodological tools such as the heuristic device and the connective comparison, this paper will critique the univocal visual link established in cultural theory and the collective imagination between modernity and the image of the flapper. In order to provide a counterexample to this dominant association, the six features identified by the MGRG as pertaining to the flapper will be applied to women wearing kanga, a type of decorative fabric used as a garment, in the context of Zanzibar at the end of the nineteenth century. Although existing scholarship on fashion and its connection to modernity does reflect upon the Eurocentricity of the concept, this comparison provides an original contribution in that it aims at reframing the connection between fashion and modernity through the re-reading of the idea of the Modern Girl to include non-Western expressions of style. [1] Modern Girl Around the World Research Group, The Modern Girl Around the World. Consumption, Modernity, and Globalization (Durham, NC: Duke University Press, 2008).
description: Global Histories: A Student Journal, Vol. 8 No. 2 (2022): Global histories 8 (2)