cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Substrate-tuning of correlated spin-orbit oxides
Creators: name: Kim, Bongjae
name: Kim, Beom Hyun
name: Kim, Kyoo
name: Min, B. I.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We have systematically investigated substrate-strain effects on the electronic structures of two representative Sr-iridates, a correlated-insulator Sr$_2$IrO$_4$ and a metal SrIrO$_3$. Optical conductivities obtained by the \emph{ab initio} electronic structure calculations reveal that the tensile strain shifts the optical peak positions to higher energy side with altered intensities, suggesting the enhancement of the electronic correlation and spin-orbit coupling (SOC) strength in Sr-iridates. The response of the electronic structure upon tensile strain is found to be highly correlated with the direction of magnetic moment, the octahedral connectivity, and the SOC strength, which cooperatively determine the robustness of $J_{eff}$=1/2 ground states. Optical responses are analyzed also with microscopic model calculation and compared with corresponding experiments. In the case of SrIrO$_3$, the evolution of the electronic structure near the Fermi level shows high tunability of hole bands, as suggested by previous experiments.
Polariton Spin Whirls
Creators: name: Cilibrizzi, Pasquale
name: Sigurdsson, Helgi
name: Liew, Tim C. H.
name: Ohadi, Hamid
name: Wilkinson, Simon
name: Askitopoulos, Alexis
name: Shelykh, Ivan A.
name: Lagoudakis, Pavlos
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report on the observation of spin whirls in a radially expanding polariton condensate formed under non-resonant optical excitation. Real space imaging of polarization- and time-resolved photoluminescence reveal a spiralling polarization pattern in the plane of the microcavity. Simulations of the spatiotemporal dynamics of a spinor condensate reveal the crucial role of polariton interactions with a spinor exciton reservoir. Harnessing spin dependent interactions between the exciton reservoir and polariton condensates allows for the manipulation of spin currents and the realization of dynamic collective spin effects in solid state systems.
description: 12 pages, 11 figures
Bayesian Spatial Monotonic Multiple Regression
Creators: name: Rohrbeck, Christian
name: Costain, Deborah
name: Frigessi, Arnoldo
Publisher: name: arXiv
Year: 2016
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: We consider monotonic, multiple regression for a set of contiguous regions (lattice data). The regression functions permissibly vary between regions and exhibit geographical structure. We develop new Bayesian non-parametric methodology which allows for both continuous and discontinuous functional shapes and which are estimated using marked point processes and reversible jump Markov Chain Monte Carlo techniques. Geographical dependency is incorporated by a flexible prior distribution; the parametrisation allows the dependency to vary with functional level. The approach is tuned using Bayesian global optimization and cross-validation. Estimates enable variable selection, threshold detection and prediction as well as the extrapolation of the regression function. Performance and flexibility of our approach is illustrated by simulation studies and an application to a Norwegian insurance data set.
description: 31 pages, 9 Figures
Excitation of high orbital angular momentum Rydberg states with Laguerre-Gauss beams
Creators: name: Rodrigues, J. D.
name: Marcassa, L. G.
name: Mendonça, J. T.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider the excitation of Rydberg states through photons carrying an intrinsic orbital angular momentum degree of freedom. Laguerre-Gauss modes, with a helical wave-front structure, correspond to such a set of laser beams, which carry some units of orbital angular momentum in their propagation direction. We demonstrate that, in a proper geometrical setting, this orbital angular momentum can be transferred to the internal degrees of freedom of the atoms, thus violating the standard dipolar selection rules. Higher orbital angular momentum states become accessible through a single photon excitation process. We investigate how the spacial structure of the Laguerre-Gauss beam affects the radial coupling strength, assuming the simplest case of hydrogen-like wavefunctions. Finally we discuss a generalization of the angular momentum coupling, in order to include the effects of the fine and hyperfine splitting, in the context of the Wigner-Eckart theorem.
description: Submitted to J. Phys. B - Special Issue on Cold Rydberg Atoms
Unexpected aspects of strain relaxation and compensation in InGaAs metamorphic structures grown by MOVPE
Creators: name: Gocalinska, A.
name: Manganaro, M.
name: Pelucchi, E.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present a selection of stack designs for MOVPE grown InxGa1-xAs metamorphic buffer layers following various convex-down compositional continuous gradients of the In content, showing that defect generation and strain can be managed in a variety of ways, some rather unexpected (and unreported). Indeed, we observe that it is possible to grow surprisingly thick tensile strained layers on metamorphic substrates, without significant relaxation and defect generation. We believe our findings give significant insights to the investigation of strain, relaxation and defect distribution in metamorphic buffer design, so to obtain properly engineered/tailored structures (the most successful ones already finding applications in device growth).
Multiwavelength polarization insensitive lenses based on dielectric metasurfaces with meta-molecules
Creators: name: Arbabi, Ehsan
name: Arbabi, Amir
name: Kamali, Seyedeh Mahsa
name: Horie, Yu
name: Faraon, Andrei
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Metasurfaces are nano-structured devices composed of arrays of subwavelength scatterers (or meta-atoms) that manipulate the wavefront, polarization, or intensity of light. Like other diffractive optical devices, metasurfaces suffer from significant chromatic aberrations that limit their bandwidth. Here, we present a method for designing multiwavelength metasurfaces using unit cells with multiple meta-atoms, or meta-molecules. Transmissive lenses with efficiencies as high as 72% and numerical apertures as high as 0.46 simultaneously operating at 915 nm and 1550 nm are demonstrated. With proper scaling, these devices can be used in applications where operation at distinct known wavelengths is required, like various fluorescence microscopy techniques.
Electrostatics of polymer translocation events in electrolyte solutions
Creators: name: Buyukdagli, Sahin
name: Ala-Nissila, T.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We develop an analytical theory that accounts for the image and surface charge interactions between a charged dielectric membrane and a DNA molecule translocating through the membrane. Translocation events through neutral carbon-based membranes are driven by a competition between the repulsive DNA-image-charge interactions and the attractive coupling between the DNA segments on the trans and the cis sides of the membrane. The latter effect is induced by the reduction of the coupling by the dielectric membrane. In strong salt solutions where the repulsive image-charge effects dominate the attractive trans-cis coupling, the DNA molecule encounters a translocation barrier of ~10 kBT. In dilute electrolytes, the trans-cis coupling takes over image-charge forces and the membrane becomes a metastable attraction point that can trap translocating polymers over long time intervals. This mechanism can be used in translocation experiments in order to control the DNA motion by tuning the salt concentration of the solution.
Collapsing objects with the same gravitational trajectory can radiate away different amount of energy
Creators: name: Dai, De-Chang
name: Stojkovic, Dejan
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study radiation emitted during the gravitational collapse from two different types of shells. We assume that one shell is made of dark matter and is completely transparent to the test scalar (for simplicity) field which belongs to the standard model, while the other shell is made of the standard model particles and is totally reflecting to the scalar field. These two shells have exactly the same mass, charge and angular momentum (though we set the charge and angular momentum to zero), and therefore follow the same geodesic trajectory. However, we demonstrate that they radiate away different amount of energy during the collapse. This difference can in principle be used by an asymptotic observer to reconstruct the physical properties of the initial collapsing object other than mass, charge and angular momentum. This result has implications for the information paradox and expands the list of the type of information which can be released from a collapsing object.
description: 5 pages, 5 figures, accepted by PLB. arXiv admin note: text overlap with arXiv:1601.07921
Design and synthesis of immobilised phospholipid monolayers for the study of peptide-biomembrane interactions
Creators: name: Tzong-Hsien., Lee
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Two-loop calculation of anomalous kinetics of the reaction $A + A \rightarrow\varnothing$ in randomly stirred fluid
Creators: name: Hnatič, Michal
name: Honkonen, Juha
name: Lučivjanský, Tomáš
Publisher: name: arXiv
Year: 2015
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The single-species annihilation reaction $A + A \rightarrow\varnothing$ is studied in the presence of a random velocity field generated by the stochastic Navier-Stokes equation. The renormalization group is used to analyze the combined influence of the density and velocity fluctuations on the long-time behavior of the system. The direct effect of velocity fluctuations on the reaction constant appears only from the two- loop order, therefore all stable fixed points of the renormalization group and their regions of stability are calculated in the two-loop approximation in the two-parameter $(ε, Δ)$ expansion. A renormalized integro- differential equation for the number density is put forward which takes into account the effect of density and velocity fluctuations at next-to-leading order. Solution of this equation in perturbation theory is calculated in a homogeneous system.
description: arXiv admin note: substantial text overlap with arXiv:1212.1025
A normal supermassive black hole in NGC 1277
Creators: name: Graham, Alister W.
name: Durré, Mark
name: Savorgnan, Giulia A. D.
name: Medling, Anne M.
name: Batcheldor, D.
name: Scott, Nicholas
name: Watson, Beverly
name: Marconi, A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The identification of galaxies with `overly massive' black holes requires two measurements: a black hole mass (M_bh) and a host spheroid mass (M_sph,*). Here we provide our measurements for NGC 1277. Our structural decomposition reveals that NGC 1277 is dominated by a `classical' spheroid with a Sersic index n=5.3, a half-light radius R_e=2.1 kpc, and a stellar mass of 2.7x10^{11} M_sun (using M_*/L_V=11.65, Martin-Navarro et al.). This mass is an order of magnitude greater than originally reported. Using the latest (M_bh)-n, (M_bh)-(M_sph,*) and (M_bh)-sigma relations, the expected black hole mass is respectively (0.57^{+1.29}_{-0.40})x10^9 M_sun, (1.58^{+4.04}_{-1.13})x10^9 M_sun, and (2.27^{+4.04}_{-1.44})x10^9 M_sun (using sigma=300 km/s) for which the `sphere-of-influence' is 0".31. Our new kinematical maps obtained from laser guide star assisted, adaptive optics on the Keck I Telescope dramatically reaffirm the presence of the inner, nearly edge-on, disk seen in this galaxy's image. We also report that this produces a large velocity shear (~400 km/s) across the inner 0".2 (70 pc) plus elevated values of sqrt{sigma^2+(V_rot)^2} across the inner 3".8x0".6 region of the galaxy. Our new multi-Gaussian expansion (MGE) models and Jeans Anisotropic MGE (JAM) analysis struggled to match this extended component. Our optimal black hole mass, albeit a probable upper limit because of the disk, is 1.2x10^9 M_sun (M/L_V=12.3). This is an order of magnitude smaller than originally reported and 4 times smaller than recently reported. It gives an M_bh/M_sph,* ratio of 0.45% in agreement with the median (~0.5%) and range (0.1 to 5.0%) observed in non-dwarf, early-type galaxies. This result highlights the need for caution with inner disks.
description: Accepted to appear in ApJ (originally submitted 19 August, 2015). 15 pages (including 11 figures and 1 page of references)
From Formal Semantics to Verified Slicing : A Modular Framework with Applications in Language Based Security
Creators: name: Wasserrab, Daniel
Publisher: name: KIT Scientific Publishing
Year: 2011
Subjects: Theorem Proving
Formal Semantics
Slicing
Modularity
Language Based Security

description: This book presents a modular framework for slicing in the proof assistant Isabelle/HOL which is based on abstract control flow graphs. Building on such abstract structures renders the correctness results language-independent. To prove that they hold for a specific language, it remains to instantiate the framework with this language, which requires a formal semantics of this language in Isabelle/HOL. We show that formal semantics even for sophisticated high-level languages are realizable.
study-of-the-effect-of-mannoprotein-extracted-from-saccharomyces-cerevisiae-on-some-pathogenic-8508.pdf
Creators: name: Yahya Abboud, Ali
Publisher: name: figshare
Year: 2023
Subjects: Bacteriology

description: The study included the collection of 19 bacterial isolates from different isolation source. Isolates were diagnosed depending on cultural, microscopical and biochemical tests, as well as the diagnostic system Vitek 2. The bacterial isolates were tested for sensitivity to ten antibiotics. All isolates were resistant to Ceftazidime and Cefotaxime , Except for the isolate P. mirabilis was sensitive to them. The resistance and sensitivity of isolates to other antibiotics was. Super maya isolation has been elected the best yeast out of 5 isolates of S. cerevisiae in the production of mannoprotein, with the highest emulsifying efficacy of 63.33%. The inhibitory activity of partially and completely purified mannoprotein against pathogenic bacteria was tested using flat microtiter plates to determine (MIC). The partially purified mannoprotein showed inhibitory effect at the lowest inhibitor concentration of 75 mg/ml against seven bacterial isolates, Salmonella. group, E. coli, P. aeruginosa, A. baumannii, S. pneumoniae, B. cepacia and S. sonni, While the minimum Inhibitory concentration as low as 150 mg/ml for four isolates of K. pneumoniae, E. aerogenes, E. cloacae and S. aureus. The inhibitory activity of mannoprotein increased after total purification by gel filtration, it showed inhibitory efficacy at an inhibitor concentration as low as 37.5 mg / mL towards eleven selected bacterial isolates
An Interacting Dark Energy Model with Nonminimal Derivative Coupling
Creators: name: Nozari, Kourosh
name: Behrouz, Noushin
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We study cosmological dynamics of an extended gravitational theory that gravity is coupled non-minimally with derivatives of a dark energy component and there is also a phenomenological interaction between the dark energy and dark matter. Depending on the direction of energy flow between the dark sectors, the phenomenological interaction gets two different signs. We show that this feature affects the existence of attractor solution, the rate of growth of perturbations and stability of the solutions. By considering an exponential potential as a self-interaction potential of the scalar field, we obtain accelerated scaling solutions that are attractors and have the potential to alleviate the coincidence problem. While in the absence of the nonminimal derivative coupling there is no attractor solution for phantom field when energy transfers from dark matter to dark energy, we show an attractor solution exists if one considers an explicit nonminimal derivative coupling for phantom field in this case of energy transfer. We treat the cosmological perturbations in this setup with details to show that with phenomenological interaction, perturbations can grow faster than the minimal case.\\ {\bf Keywords}: Dynamical Systems; Dark Energy; Dark Matter; Non-Minimal Derivative Coupling, Statefinder Diagnostic, Cosmological Perturbations.
description: 26 pages, 10 figures, Accepted for Publication in "Physics of the Dark Universe"
Recent results from NA61/SHINE
Creators: name: Andronov, Evgeny
Publisher: name: arXiv
Year: 2015
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The NA61/SHINE experiment aims to discover the critical point of strongly interacting matter and study the properties of the onset of deconfinement. For these goals a scan of the two dimensional phase diagram (T-$μ_B$) is being performed at the SPS by measurements of hadron production in proton-proton, proton-nucleus and nucleus-nucleus interactions as a function of collision energy and system size. In this contribution intriguing results on the energy dependence of hadron spectra and yields in inelastic p+p and centrality selected Be+Be collisions will be presented. In particular, the energy dependence of the signals of deconfinement, the 'horn', 'step' and 'kink', in p+p interactions will be presented and compared with the corresponding results from central Pb+Pb collisions from NA49.
description: 10 pages, 11 figures, To appear in the proceedings of ICNFP-2015
Buried object detection using handheld WEMI with task-driven extended functions of multiple instances
Creators: name: Cook, Matthew
name: Zare, Alina
name: Ho, Dominic
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Many effective supervised discriminative dictionary learning methods have been developed in the literature. However, when training these algorithms, precise ground-truth of the training data is required to provide very accurate point-wise labels. Yet, in many applications, accurate labels are not always feasible. This is especially true in the case of buried object detection in which the size of the objects are not consistent. In this paper, a new multiple instance dictionary learning algorithm for detecting buried objects using a handheld WEMI sensor is detailed. The new algorithm, Task Driven Extended Functions of Multiple Instances, can overcome data that does not have very precise point-wise labels and still learn a highly discriminative dictionary. Results are presented and discussed on measured WEMI data.
description: Proceedings of the SPIE, 2016
Three-dimensional distribution of hydrogen fluoride gas toward NGC6334 I and I(N)
Creators: name: van der Wiel, M. H. D.
name: Naylor, D. A.
name: Makiwa, G.
name: Satta, M.
name: Abergel, A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Aims. We investigate the spatial distribution of a collection of absorbing gas clouds, some associated with the dense, massive star-forming core NGC6334 I, and others with diffuse foreground clouds. For the former category, we aim to study the dynamical properties of the clouds in order to assess their potential to feed the accreting protostellar cores. Methods. We use spectral imaging from the Herschel SPIRE iFTS to construct a map of HF absorption at 243 micron in a 6x3.5 arcmin region surrounding NGC6334 I and I(N). Results. The combination of new, spatially fully sampled, but spectrally unresolved mapping with a previous, single-pointing, spectrally resolved HF signature yields a 3D picture of absorbing gas clouds in the direction of NGC6334. Toward core I, the HF equivalent width matches that of the spectrally resolved observation. The distribution of HF absorption is consistent with three of the seven components being associated with this dense star-forming envelope. For two of the remaining four components, our data suggest that these clouds are spatially associated with the larger scale filamentary star-forming complex. Our data also implies a lack of gas phase HF in the envelope of core I(N). Using a simple description of adsorption onto and desorption from dust grain surfaces, we show that the overall lower temperature of the envelope of source I(N) is consistent with freeze-out of HF, while it remains in the gas phase in source I. Conclusions. We use the HF molecule as a tracer of column density in diffuse gas (n(H) ~ 10^2 - 10^3 cm^-3), and find that it may uniquely trace a relatively low density portion of the gas reservoir available for star formation that otherwise escapes detection. At higher densities prevailing in protostellar envelopes (>10^4 cm^-3), we find evidence of HF depletion from the gas phase under sufficiently cold conditions.
description: 14 pages, 10 figures. Accepted for publication in A&A
Intersecting Branes, SUSY Breaking and the 2TeV Excess at the LHC
Creators: name: Blumenhagen, Ralph
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Intersecting D-brane models in string theory can naturally support the gauge and matter content of left-right symmetric extensions of the Standard Model with gauge symmetry SU(3)_c x SU(2)_L x SU(2)_R x U(1)_{B-L}. Considering such models as candidates for explaining the 2TeV excesses seen in Run-1 by both ATLAS and CMS, the minimal possible scale of supersymmetry breaking is determined by the requirement of precise one-loop gauge coupling unification. For the vector-like, bifundamental and (anti-)symmetric Higgs content of such brane configurations, this comes out fairly universally at around 19TeV. For the SU(2)_R gauge coupling one finds values 0.48
description: 17 pages, 4 figures, v2: note added, refs added
Integer Complexity: Representing Numbers of Bounded Defect
Creators: name: Altman, Harry
Publisher: name: arXiv
Year: 2016
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11A67

description: Define $\|n\|$ to be the complexity of $n$, the smallest number of ones needed to write $n$ using an arbitrary combination of addition and multiplication. John Selfridge showed that $\|n\|\ge 3\log_3 n$ for all $n$. Based on this, this author and Zelinsky defined the "defect" of $n$, $δ(n):=\|n\|-3\log_3 n$, and this author showed that the set of all defects is a well-ordered subset of the real numbers. This was accomplished by showing that for a fixed real number $r$, there is a finite set $S$ of polynomials called "low-defect polynomials" such that for any $n$ with $δ(n)
description: 31 pages, 4 figures
Study of the characteristics of SiPMs matrix as a photosensor for the scintillation detectors
Creators: name: Dzaparova, I. M.
name: Gangapshev, A. M.
name: Gavrilyuk, Yu. M.
name: Petkov, V. B.
name: Sergeev, A. V.
name: Volchenko, V. I.
name: Yakimenko, S. P.
name: Yanin, A. F.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The matrices formed of silicon photomultipliers (SiPMs) are very promising photosensors for the scintillation detectors. The use of SiPM matrices with appropriate optical collector gives, in principle, a possibility to do a snapshot of glowing track of charged particle traversing a scintillator. The prototype of such scintillation detector is under development now in INR RAS. The preliminary results of characterization study of the matrix ArrayC-60035-64P-PCB (SensL company) for the prototype of such detector are presented.
description: Poster contribution to the International Conference on New Photo-detectors (July 6-9, 2015, Moscow, Troitsk, Russia), to be published in PoS (PhotoDet2015)
Characterization of aromaticity in analogues of titan's atmospheric aerosols with two-step laser desorption ionization mass spectrometry
Creators: name: Mahjoub, Ahmed
name: Schwell, Martin
name: Carrasco, Nathalie
name: Benilan, Yves
name: Cernogora, Guy
name: Szopa, Cyril
name: Gazeau, Marie-Claire
Publisher: name: arXiv
Year: 2016
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The role of polycyclic aromatic hydrocarbons (PAH) and Nitrogen containing PAH (PANH) as intermediates of aerosol production in the atmosphere of Titan has been a subject of controversy for a long time. An analysis of the atmospheric emission band observed by the Visible and Infrared Mapping Spectrometer (VIMS) at 3.28 micrometer suggests the presence of neutral polycyclic aromatic species in the upper atmosphere of Titan. These molecules are seen as the counter part of negative and positive aromatics ions suspected by the Plasma Spectrometer onboard the Cassini spacecraft, but the low resolution of the instrument hinders any molecular speciation. In this work we investigate the specific aromatic content of Titan's atmospheric aerosols through laboratory simulations. We report here the selective detection of aromatic compounds in tholins, Titan's aerosol analogues, produced with a capacitively coupled plasma in a N2:CH4 95:5 gas mixture. For this purpose, Two-Step Laser Desorption Ionization Time-of-Flight Mass Spectrometry (L2DI-TOF-MS) technique is used to analyze the so produced analogues. This analytical technique is based on the ionization of molecules by Resonance Enhanced Multi-Photon Ionization (REMPI) using a λ=248 nm wavelength laser which is selective for aromatic species. This allows for the selective identification of compounds having at least one aromatic ring. Our experiments show that tholins contain a trace amount of small PAHs with one to three aromatic rings. Nitrogen containing PAHs (PANHs) are also detected as constituents of tholins. Molecules relevant to astrobiology are detected as is the case of the substituted DNA base adenine.
Dopamine modulation of atrial natriuretic factor in rat hypothalamic cultures
Creators: name: Lee., Dan
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Resolved gravity duals of ${\cal N}=4$ quiver field theories in 2+1 dimensions
Creators: name: Cottrell, William
name: Hashimoto, Akikazu
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We generalize the construction by Aharony, Hashimoto, Hirano, and Ouyang of ${\cal N}=4$ quiver gauge theory with gauge group $U(N+M) \times U(N)$, $k$ fundamentals charged under $U(N)$ and bi-fundamentals, to the case with gauge group $\prod_{i=1}^{\hat k} U(N_i)$ with $k_i$ fundamentals charged under $U(N_i)$. This construction is facilitated by considering the resolved $ALE_{\hat k} \times TN_{k}$ background in M-theory including non-trivial fluxes through the resolved 4-cycles in the geometry. We also describe the M-theory lift of the IIA Page charge quantization condition. Finally, we clarify the role of string corrections in various regimes of parameter space.
description: 34 pages, 11 figures
Supplementary materials for Journal of Insects as Food and Feed manuscript 23524588-20230024: Survey on public acceptance of insects as novel food in a non-EU country: a case study of Serbia
Creators: name: Andrić, A.
name: Miličić, M.
name: Bojanić, M.
name: Obradović, V.
name: Šašić Zorić, L.
name: Petrović, M.
name: Gadjanski, I.
Publisher: name: Brill Online
Year: 2023
Subjects: classificationCode: 380101
subject: Agricultural economics

description: The present study aimed to evaluate the state of public perceptions and acceptance of insects as food in Serbia. The data was gathered via an online survey involving 1,102 participants who completed Google Forms questionnaire shared through mailing lists and social media channels. The findings indicate that, while 85.3% of the respondents were aware of the use of insects in human diet, only 12.5% had previously consumed edible insects. The results of the chi-square tests further revealed that both familiarity and experience significantly affected willingness to buy insect-based food, whereas age and educational attainment did not. Men were more open to purchasing edible insects than women. Twice as many participants (49.4%) responded positively to eating insect-based food in which insects were not visible than to consuming recognisable insects (25.4%). Crisis (shortage of conventional sources of protein), curiosity, nutrition, and health benefits were the most frequently chosen reasons for including insect-based products in a diet, whereas disgust was the main reason against. Multiple correspondence analysis resulted in two dimensions that accounted for the largest amount of variance. The first dimension referred to familiarity with entomophagy, experience of eating edible insects, and willingness to buy insect-based products, whereby sustainability, affordability, taste, nutrition, and curiosity were the reasons for including insect-based products in a diet, while high price was a reason against. The second dimension indicated lack of familiarity, experience, or willingness to buy, with crisis as the most common motivating reason, and the perception of insects as pests and socio-cultural unacceptance as the main reasons against. Although almost half of the respondents reported willingness to consume processed insect-based products, the actual acceptance is possibly lower. Therefore, future research should focus on the provision of tasting opportunities as well as information on the benefits associated with the production and consumption of insects.
30 Jahre „Geschichte der Gouvernementalität“:
Creators: name: Schwerin, Alexander Von
Publisher: name: Leipziger Universitätsverlag
Year: 2007

description: An increasing number of studies have appeared that together come under the label of governmentality. The topics show that an analysis related to practices can integrate a broad spectrum of social phenomena that is out of the range of conventional theories of the state. Less well known is the founding text of governmentality studies. Foucault‘s “history of governmentality” is a genealogy of liberal governments, ending with the rise of the recent so-called neoliberal transformation of the 1970s. The weakness of that text is that it fails to show the connections of the concept of governmentality to epistemology. Also, recent studies mention the power relations of knowledge only globally, leaving science in a sphere of its own. However, originality and strength of the analysis of governmental power depends on its linkage to a history of knowledge.
description: Comparativ, Vol 17 No 3 (2007): Ernährung im Zeitalter der Globalisierung
Beef Around the World –
Creators: name: Loheide, Boris
Publisher: name: Leipziger Universitätsverlag
Year: 2007

description: Beef around the World. The Globalization of Beef Markets before 1914 Between 1870 and 1914, beef became part of an international trade network between Argentina, Great Britain and the United States. The driving forces behind market integration were the transport revolution, a growing demand for high quality food and a reorganization of trade policies in the transatlantic world. The transport revolution led to a substantial decrease in freight rates and linked distant markets. After the invention of mechanical refrigeration (ca. 1880) not only grain but also ‘dead meat’ could now be shipped at competitive prices. Based on a growing population and increasing incomes the British and North-American consumers developed a higher demand for this high value food. Mass-production and economies of scale in the United States and Argentina created new forms of vertically integrated production, enforced further economic expansion and compelled a novel system of finance and distribution.
description: Comparativ, Vol 17 No 3 (2007): Ernährung im Zeitalter der Globalisierung
Modellierung und Simulation von Mehrkörpersystemen mit flächigen Reibkontakten
Creators: name: Stamm, Wolfgang
Publisher: name: KIT Scientific Publishing
Year: 2011
Subjects: Mehrkörperdynamik
Kontaktmechanik
Reibung
Coulomb
Regularisierung

description: Ein Formalismus zur Dynamiksimulation von mechanischen Mehrkörpersystemen mit flächigen Reibkontakten wird vorgestellt. Der Formalismus wurde insbesondere zur Simulation von Antriebssystemen in Kraftfahrzeugen entworfen, lässt sich aber ebenso zur Modellierung anderer technischer Systeme heranziehen.
Das verwendete Reibmodell erlaubt eine konsequente Anwendung klassischer Reibgesetze wie der Coulombschen Reibung auf verteilte Kontakte.
Gastronomie in Bewegung
Creators: name: Möhring, Maren
Publisher: name: Leipziger Universitätsverlag
Year: 2007

description: Migration, Culinary Transfer, and the Internationalization of Food Consumption in West Germany after 1945 Addressing both the economic and cultural dimensions of the internationalization of food consumption, this paper deals with the emergence of ethnic restaurants in West Germany after World War II. Migrant entrepreneurs appear as the central agents in the process of changing food consumption habits. The essay offers a short outline of the spread of ethnic restaurants, followed by a chapter on the growing popularity of ‘foreign’ food consumed both in restaurants and at home. In discussing transnational transfers of food items, but also of culinary knowledge, finally, the discourses and images of ‘foreign’ food and thus its cultural meanings are analysed as they are produced (and consumed) in restaurants, but also in the mass media.
description: Comparativ, Vol 17 No 3 (2007): Ernährung im Zeitalter der Globalisierung
HyBIS: Windows Guest Protection through Advanced Memory Introspection
Creators: name: di Pietro, Roberto
name: Franzoni, Federico
name: Lombardi, Flavio
Publisher: name: arXiv
Year: 2016
Subjects: subject: Operating Systems (cs.OS)
subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Effectively protecting the Windows OS is a challenging task, since most implementation details are not publicly known. Windows has always been the main target of malwares that have exploited numerous bugs and vulnerabilities. Recent trusted boot and additional integrity checks have rendered the Windows OS less vulnerable to kernel-level rootkits. Nevertheless, guest Windows Virtual Machines are becoming an increasingly interesting attack target. In this work we introduce and analyze a novel Hypervisor-Based Introspection System (HyBIS) we developed for protecting Windows OSes from malware and rootkits. The HyBIS architecture is motivated and detailed, while targeted experimental results show its effectiveness. Comparison with related work highlights main HyBIS advantages such as: effective semantic introspection, support for 64-bit architectures and for latest Windows (8.x and 10), advanced malware disabling capabilities. We believe the research effort reported here will pave the way to further advances in the security of Windows OSes.
Slowly rotating neutron stars in scalar-tensor theories with a massive scalar field
Creators: name: Yazadjiev, Stoytcho S.
name: Doneva, Daniela D.
name: Popchev, Dimitar
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: In the scalar-tensor theories with a massive scalar field the coupling constants, and the coupling functions in general, which are observationally allowed, can differ significantly from those in the massless case. This fact naturally implies that the scalar-tensor neutron stars with a massive scalar field can have rather different structure and properties in comparison with their counterparts in the massless case and in general relativity. In the present paper we study slowly rotating neutron stars in scalar-tensor theories with a massive gravitational scalar. Two examples of scalar-tensor theories are examined - the first example is the massive Brans-Dicke theory and the second one is a massive scalar-tensor theory indistinguishable from general relativity in the weak field limit. In the later case we study the effect of the scalar field mass on the spontaneous scalarization of neutron stars. Our numerical results show that the inclusion of a mass term for the scalar field indeed changes the picture drastically compared to the massless case. It turns out that mass, radius and moment of inertia for neutron stars in massive scalar-tensor theories can differ drastically from the pure general relativistic solutions if sufficiently large masses of the scalar field are considered.
description: 12 pages, 4 figures
Globalisierungsprozesse vor Ort.
Creators: name: Rischbieter, Laura
Publisher: name: Leipziger Universitätsverlag
Year: 2007

description: Globalizing the Local and Localizing the Global. Coffee Trade and Consumption in imperial Germany as an Example for the Interdependence of Production, Trade and Consumption During the second half of the nineteenth century, coffee became one of the world’s most valuable internationally traded commodities. As such it underwent a transformation in European countries from a product of luxury to a product of mass consumption. The article focuses on the question how the interdependence of production, trade and consumption in a globalizing world affected local coffee consumption and trade in imperial Germany. Therefore the article examines processes of homogenization and differentiation, by taking a look at the international coffee trade in Hamburg, national trade and mass consumer culture, the political dimension of coffee consumption and the images connected with coffee. Rischbieter argues that the relationship between globalization and homogenization is more complicated than often assumed. Globalization implies both a process of homogenization and of differentiation.
description: Comparativ, Vol 17 No 3 (2007): Ernährung im Zeitalter der Globalisierung
The Computational Power of Dynamic Bayesian Networks
Creators: name: Brulé, Joshua
Publisher: name: arXiv
Year: 2016
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: This paper considers the computational power of constant size, dynamic Bayesian networks. Although discrete dynamic Bayesian networks are no more powerful than hidden Markov models, dynamic Bayesian networks with continuous random variables and discrete children of continuous parents are capable of performing Turing-complete computation. With modified versions of existing algorithms for belief propagation, such a simulation can be carried out in real time. This result suggests that dynamic Bayesian networks may be more powerful than previously considered. Relationships to causal models and recurrent neural networks are also discussed.
„A World without Famine“?
Creators: name: Nützenadel, Alexander
Publisher: name: Leipziger Universitätsverlag
Year: 2007

description: „A World without Famine?” International Food Politics in the era of the World Wars This paper analyzes the emergence and trajectories of global food policies from the late 9th century to the post-Word War II era. For a long time, scholarship has focused on the question how domestic governments and nationalist movements have responded to the challenges of globalizing food markets through protectionist policy agendas. It has been argued that ‘first’ globalization came to end with the World War I. This paper takes a different view. It argues that since the early 20th century, the provision, distribution and consumption of food became a mayor problem of international politics. This process was accelerated by the First World War which dramatically revealed the global interdependence of food markets. At the same, a new notion of food policies emerged, embracing problems of nutrition, demographics and economic development on a global scale. The discussions and experiences of the two Word Wars had a deep impact on international food and development policies after 1945.
description: Comparativ, Vol 17 No 3 (2007): Ernährung im Zeitalter der Globalisierung
Radiative and Non-Radiative Exciton Energy Transfer in Monolayers of Two-Dimensional Transition Metal Dichalcogenides
Creators: name: Manolatou, Christina
name: Wang, Haining
name: Chan, Weimin
name: Tiwari, Sandip
name: Rana, Farhan
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present results on the rates of interlayer energy transfer between excitons in two-dimensional transition metal dichalcogenides (TMDs). We consider both radiative (mediated by real photons) and non-radiative (mediated by virtual photons) mechanisms of energy transfer using a unified Green's function approach that takes into account modification of the exciton energy dispersions as a result of interactions. The large optical oscillator strengths associated with excitons in TMDs result in very fast energy transfer rates. The energy transfer times depend on the exciton momentum, exciton linewidth, and the interlayer separation and can range from values less than 100 femtoseconds to more than tens of picoseconds. Whereas inside the light cone the energy transfer rates of longitudinal and transverse excitons are comparable, outside the light cone the energy transfer rates of longitudinal excitons far exceed those of transverse excitons. Average energy transfer times for a thermal ensemble of longitudinal and transverse excitons is temperature dependent and can be smaller than a picosecond at room temperature for interlayer separations smaller than 10 nm. Energy transfer times of localized excitons range from values less than a picosecond to several tens of picoseconds. When the exciton scattering and dephasing rates are small, energy transfer dynamics exhibit coherent oscillations. Our results show that electromagnetic interlayer energy transfer can be an efficient mechanism for energy exchange between TMD monolayers.
description: 13 pages, 7 figures
Plasmon-assisted photoresponse in Ge-coated bowtie nanojunctions
Creators: name: Evans, Kenneth M.
name: Zolotavin, Pavlo
name: Natelson, Douglas
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We demonstrate plasmon-enhanced photoconduction in Au bowtie nanojunctions containing nanogaps overlaid with an amorphous Ge film. The role of plasmons in the production of nanogap photocurrent is verified by studying the unusual polarization dependence of the photoresponse. With increasing Ge thickness, the nanogap polarization of the photoresponse rotates 90 degrees, indicating a change in the dominant relevant plasmon mode, from the resonant transverse plasmon at low thicknesses to the nonresonant "lightning rod" mode at higher thicknesses. To understand the plasmon response in the presence of the Ge overlayer and whether the Ge degrades the Au plasmonic properties, we investigate the photothermal response (from the temperature-dependent Au resistivity) in no-gap nanowire structures, as a function of Ge film thickness and nanowire geometry. The film thickness and geometry dependence are modeled using a cross-sectional, finite element simulation. The no-gap structures and the modeling confirm that the striking change in nanogap polarization response results from redshifting of the resonant transverse mode, rather than degradation in the Au/Ge properties. We note remaining challenges in determining the precise mechanism of photocurrent production in the nanogap structures.
description: 20 pages, 5 figures
Vom Siegeszug übergreifenden Rechts in der Dämmerung des Staates
Creators: name: Goerlich, Helmut
Publisher: name: Leipziger Universitätsverlag
Year: 2007

description: On the basis of two professorial dissertations, two dissertations and an assignment on the legal methodology of European law, the article shows the breakup, overlap and penetration of hitherto existing – maybe only allegedly closed – structures of the national state and in particular of its constitution by European and International Public Law. Thereby the author traces the development directions, which appear to initiate a constitutionalisation of the Community‘s sphere of law, and in fact have been retarded by the failure of the Treaty establishing a Constitution for Europe, but not have been held up. At the same time it is discussed, which classifications of the jurisdictions on the different levels this proceeding constitutionalisation conditions.
description: Comparativ, Vol 17 No 2 (2007): Hafenstädte: Mobilität, Migration, Globalisierung
Sansibar:
Creators: name: Loimeier, Roman
Publisher: name: Leipziger Universitätsverlag
Year: 2007

description: Sansibar: An East African Port City and its Times during the 19th and 20th Century In the course of the 19th and 20th centuries, Zanzibar has gone through multiple changes, not only regarding its position as a hub of East African coastal and transoceanic trade and economy, but also in terms of political and religious change. These processes of change have found expression in the emergence of a distinct „timescape“ (Zeitlandschaft) of several co-existing and/or competing orders of time, such as „religious times“ or „clock time“, which were again of central importance for the management of the harbour of Zanzibar. This contribution looks at the way in which these different times have been negotiated in Zanzibar´s recent history, from the 1830s to the present.
description: Comparativ, Vol 17 No 2 (2007): Hafenstädte: Mobilität, Migration, Globalisierung