cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Assessing the non-equilibrium thermodynamics in a quenched quantum many-body system via single projective measurements
Creators: name: Fusco, L.
name: Pigeon, S.
name: Apollaro, T. J. G.
name: Xuereb, A.
name: Mazzola, L.
name: Campisi, M.
name: Ferraro, A.
name: Paternostro, M.
name: De Chiara, G.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We analyse the nature of the statistics of the work done on or by a quantum many-body system brought out of equilibrium. We show that, for the sudden quench and for an initial state which commutes with the initial Hamiltonian, it is possible to retrieve the whole non-equilibrium thermodynamics via single projective measurements of observables. We highlight in a physically clear way the qualitative implications for the statistics of work coming from considering processes described by operators that either commute or do not commute with the unperturbed Hamiltonian of a given system. We consider a quantum many-body system and derive an expression that allows us to give a physical interpretation, for a thermal initial state, to all of the cumulants of the work in the case of quenched operators commuting with the unperturbed Hamiltonian. In the commuting case the observables that we need to measure have an intuitive physical meaning. Conversely, in the non-commuting case we show that, although it is possible to operate fully within the single-measurement framework irrespectively of the size of the quench, some difficulties are faced in providing a clear-cut physical interpretation to the cumulants. This circumstance makes the study of the physics of the system non-trivial and highlights the non-intuitive phenomenology of the emergence of thermodynamics from the fully quantum microscopic description. We illustrate our ideas with the example of the Ising model in a transverse field showing the interesting behaviour of the high-order statistical moments of the work distribution for a generic thermal state and linking them to the critical nature of the model itself.
description: 17 pages, 9 figures, RevTeX4. Revised version: Accepted for publication in PRX
title: Toxicity of four Cuban botanical derivatives against two stored-products coleopteran pests
Creators: name: Pino Pérez, Oriela
name: González, Sayonara
name: Pérez, Juan Carlos
name: Herrera, Rafael S.
name: Valenciaga, Nurys
name: Fortes, Dayleni
name: Sánchez, Yaima
name: Ramirez, Susana
name: Suris, Moraima
Publisher: name: Julius Kühn-Institut
Year: 2018

description: Plants are a source of substances for protection of stored products. The Cuban flora has not yet been fully studied as a source of pesticides for postharvest protection, partly due to its great diversity. The toxicity of four Cuban plant derivatives against Lasioderma serricorne (F.) and Sitophilus zeamais Motschulsky was investigated. The anti-insect activity of the powders and the essential oil from plants belonging to Asteraceae, Fabaceae and Piperaceae was tested. Mortality and emergence of adult insects and the repellent effect of products were evaluated. Two products derived from Piper aduncum subsp. ossanum, caused high mortality (81,6 and 100%), reduced emergence (27,9 and 0,4%) and exhibited strong repellent activity on L. serricorne. Against S. zeamais, treatments with the highest mortality values were stems of Lonchocarpus punctatus (72,4%), seeds and stems of Canavalia ensiformis (64,9 and 69,9%), and leaves of Tithonia diversifolia (67,2%). The progeny production of S. zeamais was inhibited by powders of L. punctatus stems (31,8%), C. ensiformis seeds (40,5%), leaves (43,7%) and stems (30,6%), and T. diversifolia leaves (38,7%). The stems of C. ensiformis, leaves of T. diversifolia and L. punctatus had the highest repellent effect. These products have potential for small-scale treatments of grains for protection against both insects, and P. aduncum subsp. ossanum-based products to control L. serricorne infestation in tobacco. Identification of local candidates to develop effective and safe pesticides offers new alternatives to the Cuban agriculture in the control of storage pests.
description: Julius-Kühn-Archiv, Nr. 463, Vol. 2 (2018): Proceedings of the 12th International Working Conference on Stored Product Protection (IWCSPP) in Berlin, Germany, October 7-11, 2018
Chios_villages_glb_files_Mingei
Creators: name: Karuzaki, Effie
name: Partarakis, Nikolaos
name: Zabulis, Xenophon
name: Doulgeraki, Paraskevi
name: Evdaimon, Theodoros
Publisher: name: Zenodo
Year: 2022
Subjects: Mingei
Chios
3D models

description: Documentation material from the Mingei project
Orthogonal multiple flag varieties of finite type I : Odd degree case
Creators: name: Matsuki, Toshihiko
Publisher: name: arXiv
Year: 2014
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 22E46, 14L35

description: Let $G$ be the split orthogonal group of degree $2n+1$ over an arbitrary field $\mathbb{F}$ of ${\rm char}\,\mathbb{F}\ne 2$. In this paper, we classify multiple flag varieties $G/P_1\times\cdots\times G/P_k$ of finite type. Here a multiple flag variety is called of finite type if it has a finite number of $G$-orbits with respect to the diagonal action of $G$ when $|\mathbb{F}|=\infty$.
description: 60 pages. There was a mistake on $\mathbb{F}^\times/(\mathbb{F}\times)^2$ in the first version. The main theorem is reformed
Terahertz Cyclotron Photoconductivity in a Highly Unbalanced Two-Dimensional Electron-Hole System
Creators: name: Savchenko, M. L.
name: Kvon, Z. D.
name: Candussio, S.
name: Mikhailov, N. N.
name: Dvoretskii, S. A.
name: Ganichev, S. D.
Publisher: name: Universität Regensburg
Year: 2018
Subjects: subject: 530 Physik

description: Terahertz cyclotron-resonance photoconductivity in a two-dimensional electron-hole system under conditions where the cyclotron resonance occurs owing to the absorption of radiation by electrons whose density is one to three orders of magnitude lower than the hole density is experimentally investigated for the first time. Information on the behavior of the main parameters (i.e., amplitude and broadening) characterizing resonance photoconductivity as a function of wavelength, temperature, and electron density is obtained. On this basis, it is concluded that resonance photoconductivity in the system under study results from cyclotron resonance caused by transitions between the partially filled zeroth Landau level and the first Landau level of electrons, and resonance broadening is caused by scattering on a short-range screened impurity potential. It is found that a decrease in the electron density by an order of magnitude does not lead to a significant reduction of the photoconductivity signal; moreover, at a wavelength of 432 μm, the signal even grows slightly. This fact can be associated with the effective enhancement of the field of the incident radiation in the system under study.
Two problems in noise tolerant computing
Creators: name: Tang, Sijian
Publisher: name: No Publisher Supplied
Year: 2018

description: This thesis consists of 2 main results about computations under random noise. In both problems we consider the discrete input picked from the hamming cube {0,1}n. Noise is introduced by flipping each input bit randomly with some fixed probability.In Chapter 2 we provide the first polynomial algorithm for noisy population recovery problem with finite support. This result directly implies a reverse Bonami-Beckner type inequality for sparse functions.In Chapter 3 we study the noisy broadcast model and the generalized noisy decision tree (gnd-tree) model under noise cancellation adversary. Here noise cancellation adversary is a type of adversary that can correct the random noise. Under the noise cancellation adversary, we show an Ω(ε5·n log n) lower bound for the function $OR$ in the non-adaptive gnd-tree model. This implies an Ω(log(1/ε)-1 ·n log log n) lower bound for a special kind of noisy broadcast model which we call the 2-Phase noisy broadcast model.
2018-Dyjuan_Tatro-The_Mathematics_of_Cancer-Fitting_Gompertz_Equation_to_Tumor_Growth
Creators: name: Tatro, Dyjuan
Publisher: name: QUBES Educational Resources
Year: 2023

description: Fitting the Gompertz Model to long term breast cancer study data, this project ascertains gompertzian parameters that can be used to predicts tumor growth as a function of time.
Quantum interference in second-harmonic generation from monolayer WSe2
Creators: name: Lin, Kai-Qiang
name: Bange, Sebastian
name: Lupton, John M.
Publisher: name: Universität Regensburg
Year: 2019
Subjects: subject: 530 Physik

description: A hallmark of wave–matter duality is the emergence of quantum-interference phenomena when an electronic transition follows different trajectories. This type of interference results in asymmetric absorption lines such as Fano resonances1, and gives rise to secondary effects such as electromagnetically induced transparency when multiple optical transitions are pumped2,3,4,5. Few solid-state systems show quantum interference and electromagnetically induced transparency5,6,7,8,9,10,11, with quantum-well intersubband transitions in the infrared region12,13 offering the most promising avenue to date to devices exploiting optical gain without inversion14,15. Quantum interference is usually hampered by inhomogeneous broadening of electronic transitions, making it challenging to achieve in solids at visible wavelengths and elevated temperatures. However, disorder effects can be mitigated by raising the oscillator strength of atom-like electronic transitions—excitons—that arise in monolayers of transition-metal dichalcogenides16,17. Quantum interference, probed by second-harmonic generation18,19, emerges in monolayer WSe2, without a cavity, to split the frequency-doubled laser spectrum. The splitting exhibits spectral anticrossing behaviour, and is related to the number of Rabi flops the strongly driven system undergoes. The second-harmonic generation power-law exponent deviates strongly from the canonical value of 2, showing a Fano-like wavelength dependence that is retained at room temperature. The work opens opportunities in solid-state quantum-nonlinear optics for optical mixing, gain without inversion and quantum-information processing.
Overview of Datasets for the Sign Languages of Europe
Creators: name: Kopf, Maria
name: Schulder, Marc
name: Hanke, Thomas
Publisher: name: Universität Hamburg
Year: 2021
Subjects: linguistic sign language corpora
lexical databases for sign languages
sign language dictionaries
elicitation formats for sign language data collections
interlingual index

description: EASIER project deliverable D6.1 This document identifies linguistic corpora that can be explored as high-quality training data for automatic translation within EASIER (as opposed to loosely aligned broadcast data). For each data set, the document lists what parts of the data are available under what access conditions. It also lists the elicitation formats used in several corpora in order to identify those parts of the available corpora that could be explored to build multilingual resources. In order to support the construction of an interlingual index across European sign languages, the document also lists lexical resources (lexical databases and dictionaries) available and their characteristics.
On the Fabrication of Graphene p-n Junctions and Their Application for Detecting Terahertz Radiation
Creators: name: Vasileva, G. Yu.
name: Vasilyev, Yu. B.
name: Novikov, S. N.
name: Danilov, S. N.
name: Ganichev, S. D.
Publisher: name: Universität Regensburg
Year: 2018
Subjects: subject: 530 Physik

description: A new method for the formation of lateral p-n junctions in epitaxial graphene with the use of UV (ultraviolet) radiation is considered. The UV illumination method makes it possible to obtain large-size p-n junctions. Such p-n junctions are investigated in the photocurrent and photoconductivity modes under irradiation with terahertz radiation. The mechanisms of terahertz photoresponse in graphene p-n junctions are discussed.
title: Activity of two deltamethrin formulations on different surfaces against rice weevil, Sitophilus oryzae (L.)
Creators: name: Quinn, Elazar
name: Trostanetsky, Anatoly
name: Nega, ´Mula
name: Hefetz, Rafi
name: Kostyukovsky, Moshe
Publisher: name: Julius Kühn-Institut
Year: 2018

description: Several methods are used to control stored product insects. The spraying of empty structures with insecticides, prior to the introduction of produce, is an important method for preventing development of insects. It is known that insecticide activity varies according to the various sprayed surfaces. In this study, the activity of deltamethrin was examined on concrete and plastic surfaces. Deltamethrin is a synthetic pyrethroid, active by contact against a variety of insects; applied in Israel in two formulations: KESHET 2.5% EC and BUNGY 1.5% SC (ADAMA Makhteshim Ltd.). Adults of the rice weevil, Sitophilus oryzae (L.), served as target insect in all experiments. The research was carried out in plastic Petri dishes and in Petri dishes with layer of concrete. Deltamethrin (KESHET 2.5% EC) was applied in water solution in doses of 0.02, 0.1, 0.5 g/m². Without concrete, complete mortality of S. oryzae was obtained at a concentration of 0.02 g/m², whereas in concrete plates, no mortality was found in all 3 concentrations. In contrast, deltamethrin (BUNGY 1.5% SC) in doses of 0.1 g/m², caused 100% mortality with and without concrete layer. The same results were found in the commercial warehouse. No difference in efficiency was found between the spraying methods: airbrush (Sparmax DH-125) or dripping by pipette. The results show that the efficacy of warehouse spraying by deltamethrin depends on its formulation.
description: Julius-Kühn-Archiv, Nr. 463, Vol. 2 (2018): Proceedings of the 12th International Working Conference on Stored Product Protection (IWCSPP) in Berlin, Germany, October 7-11, 2018
Infrared/terahertz spectra of the photogalvanic effect in (Bi,Sb)Te based three-dimensional topological insulators
Creators: name: Plank, Helene
name: Pernul, Johanna
name: Gebert, Sebastian
name: Danilov, Sergey N.
name: König-Otto, J.
name: Winnerl, S.
name: Lanius, M.
name: Kampmeier, J.
name: Mussler, G.
name: Aguilera, I.
name: Grützmacher, D.
name: Ganichev, Sergey
Publisher: name: Universität Regensburg
Year: 2018
Subjects: subject: 530 Physik

description: We report on the systematic study of infrared/terahertz spectra of photocurrents in (Bi,Sb)Te based three-dimensional topological insulators. We demonstrate that in a wide range of frequencies, ranging from fractions up to tens of terahertz, the photocurrent is caused by the linear photogalvanic effect (LPGE) excited in the surface states. The photocurrent spectra reveal that at low frequencies the LPGE emerges due to free carrier Drude-like absorption. The spectra allow us to determine the room temperature carrier mobilities in the surface states despite the presence of thermally activated residual impurities in the material bulk. In a number of samples we observed an enhancement of the linear photogalvanic effect at frequencies between 30 and 60 THz, which is attributed to the excitation of electrons from helical surface to bulk conduction band states. Under this condition and applying oblique incidence we also observed the circular photogalvanic effect driven by the radiation helicity.
Bucharest_Church_Stavrololeos_glb_files_Mingei
Creators: name: Karuzaki, Effie
name: Partarakis, Nikolaos
name: Zabulis, Xenophon
name: Doulgeraki, Paraskevi
name: Evdaimon, Theodoros
Publisher: name: Zenodo
Year: 2022
Subjects: Carafe Making
Glassblowing
Glass
Mingei
CERFAV

description: Documentation material from the Mingei project
Supplemental Materials: Predicting the Rossby number in convective experiments
Creators: name: Anders, Evan H.
name: Manduca, Cathryn M.
name: Brown, Benjamin P.
name: Oishi, Jeffrey S.
name: Vasil, Geoffrey M.
Publisher: name: Zenodo
Year: 2019
Subjects: convection
hydrodynamics
rotation

description: This repository contains the supplemental materials for our paper, "Predicting the Rossby number in convective experiments," to be published in ApJ. The draft version of this paper can be found online at the arXiv: https://arxiv.org/abs/1812.04518

Supplemental materials include:

	A .csv file containing scalar values of simulation outputs used in the creation of figures in the paper
	A .tar file containing the simulation code used to run the simulations in this work, which contains a README including further details on how to use the code with the Dedalus framework (http://dedalus-project.org/)
Intense isolated few-cycle attosecond XUV pulses from overdense plasmas driven by tailored laser pulses
Creators: name: Chen, Zi-Yu
name: Li, Xiao-Ya
name: Chen, Li-Ming
name: Li, Yu-Tong
name: Zhu, Wen-Jun
Publisher: name: arXiv
Year: 2014
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: A method to generate an intense isolated few-cycle attosecond XUV pulse is demonstrated using particle-in-cell simulations. When a tailored laser pulse with a sharp edge irradiates a foil target, a strong transverse net current can be excited, which emits a few-cycle XUV pulse from the target rear side. The isolated pulse is ultrashort in the time domain with a duration of several hundred attoseconds. It also has a narrow bandwidth in the spectral domain compared to other XUV sources of high-order harmonics. It has most energy confined around the plasma frequency and no low-harmonic orders below the plasma frequency. It is also shown that XUV pulse of peak field strength up to $ 8\times 10^{12} $ V$\mathrm{m}^{-1}$ can be produced. Without the need for pulse selecting and spectral filtering, such an intense few-cycle XUV pulse is better suited to a number of applications.
description: 9 pages,5 figures; Published in Optics Express
Giant Terahertz Photoconductance of Quantum Point Contacts in the Tunneling Regime
Creators: name: Otteneder, M.
name: Kvon, Z. D.
name: Tkachenko, O. A.
name: Tkachenko, V. A.
name: Jaroshevich, A. S.
name: Rodyakina, E. E.
name: Latyshev, A. V.
name: Ganichev, Sergey
Publisher: name: Universität Regensburg
Year: 2018
Subjects: subject: 530 Physik

description: We report on the observation of the giant photoconductance of a quantum point contact (QPC) in the tunneling regime excited by terahertz radiation. Studied QPCs are formed in a GaAs/(Al,Ga)As heterostructure with a high-electron-mobility two-dimensional electron gas. We demonstrate that irradiation of strongly negatively biased QPCs by laser radiation with frequency f=0.69THz and intensity 50mW/cm2 results in two orders of magnitude enhancement of the QPC conductance. The effect increases with the dark conductivity decrease. It is also characterized by a strong polarization dependence and a drastic reduction of the signal by increasing the radiation frequency to 1.63 THz. We demonstrate that all experimental findings can be well explained by the photon-assisted tunneling through the QPC. Corresponding calculations are in good agreement with the experiment.
title: Evaluation of two new insecticide formulations based on inert dusts and botanicals against four stored-grain beetles
Creators: name: Korunic, Zlatko O.
name: Fields, Paul G.
Publisher: name: Julius Kühn-Institut
Year: 2018

description: Julius-Kühn-Archiv, Nr. 463, Vol. 2 (2018): Proceedings of the 12th International Working Conference on Stored Product Protection (IWCSPP) in Berlin, Germany, October 7-11, 2018
Hvordan en videreutvikling av vurderingssystemet endrer hvordan man jobber faglig
Creators: name: Jensenius, Alexander Refsum
Publisher: name: Zenodo
Year: 2023
Subjects: musicology
open science

description: Presentasjon for NOR-CAM-nettverket 3.11.2023 ved VID vitenskapelige høgskole.
PET microplastics affect human gut microbiota communities during simulated gastrointestinal digestion, first evidence of plausible polymer biodegradation during human digestion
Creators: name: Tamargo, Alba
Publisher: name: Zenodo
Year: 2022
Subjects: Microplastics

description: INTRODUCTION The prevalence of plastic particles in the food chain has raised the concern about health effects of microplastics ingestion. In fact, the presence of polyethylene terephthalate (PET) particles in human faeces suggests their active interaction with the human digestive system. Chronic exposition could lead to microplastic-induced gut dysbiosis in several species, which might be linked to host health. However, microplastic changes during human gastrointestinal digestion or colonic fermentation are scarcely explored. MATERIALS AND METHODS To evaluate the potential risks of microplastics at the digestive level, we simulated the complete transit of a single dose of PET through the gastrointestinal tract. Gastrointestinal digestion and colonic fermentation were simulated combining harmonized static model INFOGEST (oral, gastric and intestinal steps) with the dynamic gastrointestinal model simgi® for the large intestine step, including human colonic microbiota in physiological conditions. Figure 1. Experimental setup of the present study Analysis of microplastic morphology and chemical structure were carried out at the original PET particles and at the different gastrointestinal simulated steps. Changes in microbiota composition were studied by plate counting methods and microbial 16S rRNA gene-based sequencing analysis. RESULTS FESEM images revealed an evolution of the surface after gastrointestinal digestion, indicative of a slight interaction with the media, which resulted, according to Raman characterization, with a relative amorphization of the PET structure, but no remarkable morphological changes. Some organic deposits were also found, they were remarkable after colonic fermentation. Indeed, most PET microplastics seemed to be colonized by some members of the colonic microbiota, and the surface roughness evolved to a globular surface. PET microplastic intake affects composition and diversity of the microbial communities, specially at distal colon. CONCLUSIONS PET microplastics are capable of digestive-level transformations and health effects: • PET microplastics started several biotransformations in the gastrointestinal tract • At colonic level the microplastics appeared to be structurally different from the original particles • The feeding with PET microplastics altered human microbial colonic community composition in simgi® model • Some members of the colonic microbiota could adhere to microplastics surface promoting the formation of biofilms Considering the increasing exposure to microplastics, their impact on the functionality of the gut microbiome and their potential biodegradation in the human gastrointestinal tract merits critical investigation.
description: {"references": ["10.1038/s41598-021-04489-w"]}
Phase space quantization, noncommutativity and the gravitational field
Creators: name: Chatzistavrakidis, Athanasios
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper we study the structure of the phase space in noncommutative geometry in the presence of a nontrivial frame. Our basic assumptions are that the underlying space is a symplectic and parallelizable manifold. Furthermore, we assume the validity of the Leibniz rule and the Jacobi identities. We consider noncommutative spaces due to the quantization of the symplectic structure and determine the momentum operators that guarantee a set of canonical commutation relations, appropriately extended to include the nontrivial frame. We stress the important role of left vs. right acting operators and of symplectic duality. This enables us to write down the form of the full phase space algebra on these noncommutative spaces, both in the noncompact and in the compact case. We test our results against the class of 4D and 6D symplectic nilmanifolds, thus presenting a large set of nontrivial examples that realize the general formalism.
description: 1+35 pages; extended introduction and discussion, minor text improvements, references added; published version
Superfluid two-stream instability in a microscopic model
Creators: name: Schmitt, Andreas
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The superflow in a superfluid is bounded from above by Landau's critical velocity. Within a microscopic bosonic model, I show that below this critical velocity there is a dynamical instability that manifests itself in an imaginary sound velocity and that is reminiscent of the two-stream instability in electromagnetic plasmas. I compute the onset of this instability and its full angular structure in a relativistic, uniform superfluid for all temperatures. At weak coupling, the instability only operates in a very small region in the phase diagram of temperature and superflow. Varying the coupling of the model suggests that the effect is more prominent at strong coupling and thus could be important for superfluids in compact stars and in the laboratory.
description: 14 pages, 9 figures, v2: small modifications in the text, version to appear in Phys. Rev. D
Excitonic linewidth and coherence lifetime in monolayer transition metal dichalcogenides
Creators: name: Selig, Malte
name: Berghäuser, Gunnar
name: Raja, Archana
name: Nagler, Philipp
name: Schüller, Christian
name: Heinz, Tony F.
name: Korn, Tobias
name: Chernikov, Alexey
name: Malic, Ermin
name: Knorr, Andreas
Publisher: name: Universität Regensburg
Year: 2016
Subjects: subject: LAYER MOS2; QUANTUM KINETICS; WSE2; PHOTOLUMINESCENCE; SEMICONDUCTORS; SPECTROSCOPY;
subject: 530 Physik

description: Atomically thin transition metal dichalcogenides are direct-gap semiconductors with strong light-matter and Coulomb interactions. The latter accounts for tightly bound excitons, which dominate their optical properties. Besides the optically accessible bright excitons, these systems exhibit a variety of dark excitonic states. They are not visible in the optical spectra, but can strongly influence the coherence lifetime and the linewidth of the emission from bright exciton states. Here, we investigate the microscopic origin of the excitonic coherence lifetime in two representative materials (WS2 and MoSe2) through a study combining microscopic theory with spectroscopic measurements. We show that the excitonic coherence lifetime is determined by phonon-induced intravalley scattering and intervalley scattering into dark excitonic states. In particular, in WS2, we identify exciton relaxation processes involving phonon emission into lower-lying dark states that are operative at all temperatures.
Bucharest_Xalepa_glb_files_Mingei
Creators: name: Karuzaki, Effie
name: Partarakis, Nikolaos
name: Zabulis, Xenophon
name: Doulgeraki, Paraskevi
name: Evdaimon, Theodoros
Publisher: name: Zenodo
Year: 2022
Subjects: Carafe Making
Glassblowing
Glass
Mingei
CERFAV

description: Documentation material from the Mingei project
Scaling functions and amplitude ratios for the Potts model on an uncorrelated scale-free network
Creators: name: Krasnytska, M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the critical behaviour of the $q$-state Potts model on an uncorrelated scale-free network having a power-law node degree distribution with a decay exponent $λ$. Previous data show that the phase diagram of the model in the $q,λ$ plane in the second order phase transition regime contains three regions, each being characterized by a different set of critical exponents. In this paper we complete these results by finding analytic expressions for the scaling functions and critical amplitude ratios in the above mentioned regions. Similar to the previously found critical exponents, the scaling functions and amplitude ratios appear to be $λ$-dependent. In this way, we give a comprehensive description of the critical behaviour in a new universality class.
description: 10 pages, 4 figures
title: Effectiveness of binary combinations of Plectranthus glandulosus leaf powder and Hymenocardia acida wood ash against Sitophilus zeamais (Coleoptera: Curculionidae)
Creators: name: Goudoungou, J. W.
name: Nukenine, Elias Nchiwan
name: Suh, Christopher
name: Gangué, T.
name: Ndjonka, D.
Publisher: name: Julius Kühn-Institut
Year: 2018

description: Combinations of botanicals could enhance biological activity against insects. This in turn, will reduce amount of botanical used in storage protection. In this issue, the bioassay was carried out on Sitophilus zeamais to assess the effectiveness of binary combinations of Hymenocardia acida wood ash and Plectranthus glandulosus leaf powder regarding adult toxicity, progeny inhibition, and reduction of damage and germination ability. Plectranthus glandulosus leaf powder, H. acida wood ash and their binary combinations significantly induced mortality of S. zeamais adult (P? 0.0001). The higher mortality rate was achieved by the highest content (40 g/kg) of H. acida wood ash (94.66%) and 25PG75HA (94.59%) within 14 days of exposure. The combinations of P. glandulosus leaf powder with H. acida at different proportions produced different interactions. The combination made up by 75% of P. glandulosus leaf powder with 25% of H. acida wood ash produced synergistic effect whereas that made up by 50% of each of two powders had antagonistic effect in weevil mortality. The three combinations of H. acida and P. glandulosus significantly reduced the progeny production. In term of inhibition of F1, the combination 25PG75HA revealed more effective than the two other. The grain damage and population increase were significantly reduced. In general, the non-infested maize grain had a good germination rate than the infested ones. The treatments did not have negative effect on seed germination. From These results, the two powders and their binary combinations could be used to reduce grain infestation by insect while taking in account the proportions of insecticidal powders implied in the combination.
description: Julius-Kühn-Archiv, Nr. 463, Vol. 2 (2018): Proceedings of the 12th International Working Conference on Stored Product Protection (IWCSPP) in Berlin, Germany, October 7-11, 2018
Inflamagnetogenesis redux: Unzipping sub-Planckian inflation via various cosmoparticle probes
Creators: name: Choudhury, Sayantan
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this paper I introduce a precise constraint on primordial magnetogenesis, for a generic class of single-field inflationary model followed by small field excursion below the Planck scale. I also establish a connection between the magnetic field at the present epoch and primordial gravity waves ($r$) via non-vanishing CP asymmetry parameter ($ε_{\bf CP}$), which triggers the leptogenesis scenario. Finally, I explore various hidden cosmophenomenological features of theoretical CMB B-mode polarization spectra, which can be treated as a significant probe to put further stringent constraint on low and high scale small field inflationary models after releasing the Planck B-mode polarization data.
description: 9 pages, 3 figures, Revision accepted by Physics Letters B
title: Mythen
Creators: name: Hawelka, Birgit
Publisher: name: Zentrum für Hochschul- und Wissenschaftsdidaktik
Year: 2022

description: Mythen und Sagen halten sich auch beim Thema Lehren und Lernen. Dieser Blogbeitrag prüft drei davon, die uns in der Hochschullehre häufig begegnen.
Exploring the feasibility of automatically generating case notes for psychiatrists using machine learning
Creators: name: Nazmul Kazi
name: Indika Kahanda
Publisher: name: F1000 Research Limited
Year: 2019

description: Current health care systems require clinicians to spend a substantial amount of time to digitally document their interactions with their patients through the use of electronic health records (EHRs), limiting the time spent on face-to-face patient care. Moreover, the use of EHRs is known to be highly inefficient due to additional time it takes for completion, which also leads to clinician burnout. In this project, we explore the feasibility of developing an automated case notes system for psychiatrists using text mining techniques that will listen to doctor-patient conversations, generate digital transcripts using speech-to-text conversion, classify information from the transcripts by identifying important keywords, and automatically generate structured case notes.
In our preliminary work, we develop a human powered doctor-patient transcript annotator and obtain a gold standard dataset through National Alliance of Mental Illness (NAMI) Montana. We model the task of classifying parts of conversations in to six broad categories such as medical and family history as a supervised classification problem and apply several popular machine learning algorithms. According to our preliminary experimental results obtained through 5-fold cross validation, Support Vector Machines are able to classify an unseen transcript with an average AUROC (area under the receiver operating characteristic curve) score of 89%. Currently, we are working on developing information extraction techniques to generate structured case notes from these classified information. At the same time, we are investigating the recording environment most effective for automatically transcribing a doctor-patient conversation using existing speech-to-text tools with built-in multi-speaker detection capability.
Predictions of exclusive psi(2S) production at the LHC
Creators: name: Jones, S. P.
name: Martin, A. D.
name: Ryskin, M. G.
name: Teubner, T.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The cross section for exclusive psi(2S) ultraperipheral production at the LHC is calculated using gluon parametrisations extracted from exclusive J/psi measurements performed at HERA and the LHC. Predictions are given at leading and next-to-leading order for pp centre-of-mass energies of 7, 8 and 14 TeV, assuming the non-relativistic approximation for the psi(2S) wave function.
description: Revised version (editorial changes, results unchanged), 8 pages, 3 figures, 1 table
The Electronic Thickness of Graphene
Creators: name: Rickhaus, Peter
name: Liu, Ming-Hao
name: Kurpas, Marcin
name: Kurzmann, Annika
name: Lee, Yongjin
name: Overweg, Hiske
name: Eich, Marius
name: Pisoni, Riccardo
name: Tamaguchi, Takashi
name: Wantanabe, Kenji
name: Richter, Klaus
name: Ensslin, Klaus
name: Ihn, Thomas
Publisher: name: Universität Regensburg
Year: 2019
Subjects: subject: 530 Physik

description: The van-der-Waals stacking technique enables the fabrication of heterostructures, where two conducting layers are atomically close. In this case, the finite layer thickness matters for the interlayer electrostatic coupling. Here we investigate the electrostatic coupling of two graphene layers, twisted by 22 degrees such that the layers are decoupled by the huge momentum mismatch between the K and K' points of the two layers. We observe a splitting of the zero-density lines of the two layers with increasing interlayer energy difference. This splitting is given by the ratio of single-layer quantum capacitance over interlayer capacitance C and is therefore suited to extract C. We explain the large observed value of C by considering the finite dielectric thickness d of each graphene layer and determine d=2.6 Angstrom. In a second experiment we map out the entire density range with a Fabry-Pérot resonator. We can precisely measure the Fermi-wavelength in each layer, showing that the layers are decoupled. We find that the Fermi wavelength exceeds 600nm at the lowest densities and can differ by an order of magnitude between the upper and lower layer. These findings are reproduced using tight-binding calculations.
The Missing Link: Connecting Exoplanets and Galactic Chemical Evolution via Stellar Abundances
Creators: name: Coria, David Ricardo
name: Crossfield, Ian J. M.
name: Lothringer, Joshua
Publisher: name: Zenodo
Year: 2022
Subjects: Solar Twins
Isotopic Abundances

description: I present the first isotopic abundances of 13CO and C18O in solar twin stars and test the results against several galactic chemical evolution (GCE) models with different nucleosynthesis prescriptions. First, I compare the observed spectra to synthetic spectra generated from custom solar atmosphere models derived from the PHOENIX atmosphere code. Next, I compare the calculated abundances to GCE models that consider isotopic yields from massive stars, asymptotic giant branch (AGB) stars and novae. The 12C / 13C and 16O / 18O ratios determined for this sample of solar twins are consistent with predictions from the selected GCE models. This project constitutes the first in a stellar chemical abundance series seeking to: (1) support the James Webb Space Telescope (JWST) as it characterizes exoplanet atmospheres, interiors, and biosignatures by providing host star abundances (2) identify how unexplored stellar abundances reveal the process of galactic chemical evolution and correlate with star formation, interior, age, metallicity, and activity; and (3) provide improved stellar ages using stellar abundance measurements. Our measurements will provide a baseline for JWST exoplanet atmospheric abundance measurements, help identify the “missing link” between current GCE models and inconsistent observations and may provide a new means of determining stellar ages. By measuring elemental and isotopic abundances in a variety of stars, we not only supply refined host star parameters, but also provide the necessary foundations for complementary exoplanet characterization studies and ultimately contribute to the exploration of galactic, stellar, and planetary origins and evolution.
title: Undressing the judge : feminism, adjudication and the legal imagination
Creators: name: Rackley, Erika
Publisher: name: University of Kent
Year: 2003

description: This thesis explores the legal imagination. In particular, it focuses on the role of imagination in shaping and informing understandings of law, justice and adjudication. It seeks to provoke and generate new insights about the processes and substance of legal decision-making through the invocation of the idea of difference in the context of debates about the role and composition of the judiciary. Harnessing the power of literature - its images and stories - the thesis highlights the extent to which imagination is involved in our perceptions and evaluations of judging and the judge. To this end it deploys literary examples and techniques, alongside the destabilising potential of feminist method and insights, to identify and disrupt the imaginative hold of particular images and narratives about law and adjudication. Debate about difference brings into sharp relief the extent to which prevailing understandings of the judge are enmeshed in notions of sameness and uniformity. This thesis invites us to take seriously images of the judge, so familiar and two-dimensional as to belie their unacknowledged grip on our imaginative and cognitive processes. It encourages us to disturb such images and the assumptions underlying them with a view to imagining new conceptions of the judge and unearthing a broader understanding of legal decision-making. Put another way, difference becomes not an end in itself but rather a means - a route - to engendering diverse perspectives on adjudication, justice and law, to ‘undressing the judge’.
Limit distributions of three-state quantum walks: the role of coin eigenstates
Creators: name: Stefanak, Martin
name: Bezdekova, Iva
name: Jex, Igor
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We analyze two families of three-state quantum walks which show the localization effect. We focus on the role of the initial coin state and its coherence in controlling the properties of the quantum walk. In particular, we show that the description of the walk simplifies considerably when the initial coin state is decomposed in the basis formed by the eigenvectors of the coin operator. This allows us to express the limit distributions in a much more convenient form. Consequently, striking features which are hidden in the standard basis description are easily identified. Moreover, the dependence of moments of the position distribution on the initial coin state can be analyzed in full detail. In particular, we find that in the eigenvector basis the even moments and the localization probability at the origin depend only on incoherent combination of probabilities. In contrast, odd moments and localization outside the origin are affected by the coherence of the initial coin state.
title: Comparative lethality of rice husk ash and a diatomaceous eartht adults of four storage beetles
Creators: name: Ofuya, Thomas
name: Adler, Cornel
Publisher: name: Julius Kühn-Institut
Year: 2018

description: Lethality of rice husk ash (RHA) and a diatomaceous earth (SilicoSec) (DE) to adults of Sitophilus zeamais, S. granarius, Lasioderma serricorne and Callosobruchus maculatus was investigated under controlled conditions of 25 ± 2° C and 60 ± 3% relative humidity. Each product was tested at 0.05 g to 0.5 g/20 g of grain respectively in glass Petri dishes against 20 adults of each beetle. Adult mortality was observed up to 10 days post treatment. RHA/DE mixtures (1:1, 3:1 and 1:3 ratios) were also tested at 2% of grain weight. Additionally, RHA and DE were tested at low dosages (0.01 g to 0.04 g/20 g) against adults of C. maculatus alone. The DE generally produced significantly higher mortality of all the adult storage beetles and at earlier observation times, than RHA at the lower dosages (< 0.2 g). Adult mortality produced by RHA and DE in S. zeamais and S. granarius increased with increase in dosage from 0.05 g to 0.5 g. The RHA/DE mixtures generally produced similar mortality of all the adult storage beetles irrespective of post-treatment exposure time. The S. zeamais and S. granarius were generally more tolerant to the DE and RHA treatments than L. serricorne and C. maculatus. Percentage mortality of C. maculatus adults when DE was applied at low dosages (0.01 g to 0.04 g) was generally higher than RHA applied at similar dosages, up to 3 days-post treatment. All treatments produced 100% mortality of C. maculatus adults 4 days-post treatment. The data further confirm the efficacy of DE and RHA as insecticidal dusts at the dosage rate of 0.5 g or more per kg of grain.
description: Julius-Kühn-Archiv, Nr. 463, Vol. 2 (2018): Proceedings of the 12th International Working Conference on Stored Product Protection (IWCSPP) in Berlin, Germany, October 7-11, 2018
Spin-polarized surface state in Li-doped SnO$_{2}$(001)
Creators: name: Din, Naseem Ud
name: Rahman, Gul
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Using LDA+$U$, we investigate Li-doped rutile SnO$_2$(001) surface. The surface defect formation energy shows that it is easier for Li to be doped at surface Sn site than bulk Sn site in SnO$_2$. Li at surface and sub-surface Sn sites has a magnetic ground state, and the induced magnetic moments are not localized at Li site, but spread over Sn and O sites. The surface electronic structures show that Li at surface Sn site shows $100%$ spin-polarization (half metallic), whereas Li at sub-surface Sn site does not have half metallic state due to Li-Sn hybridized orbitals. The spin-polarized surface has a ferromagnetic ground state, therefore, ferromagnetism is expected in Li-doped SnO$_2$(001) surface.
description: LaTeX files
Handbuch für Kontaktpersonen Teil I: Projekt, Werbung, Informantensuche, Raumsuche
Creators: name: König, Susanne
name: Langer, Gabriele
name: Hanke, Thomas
name: Konrad, Reiner
name: Blanck, Dolly
name: Goldschmidt, Stefan
name: Hofmann, Ilona
name: Hong, Sung-Eun
name: Jeziorski, Olga
name: König, Lutz
name: Nishio, Rie
name: Rathmann, Christian
name: Matthes, Silke
name: Worseck, Satu
Publisher: name: Universität Hamburg
Year: 2020

description: Project note for work package 02 “Datenerhebung / Data Collection” produced in the DGS-Korpus project.
 This manual was compiled for the training of the contact persons. It was the basis of their first training weekend and given to them in support of their task of promoting the project and recruiting informants. It contains general information on the DGS-Korpus project, its aims and the planned data collection procedure. It includes a description of the role and the various duties of the contact persons, the procedure starting with the recruitment and the selection of suitable informants up to staying in contact with them, as well as the preparatory steps necessary at the location of the data collection. Criteria for the search and selection of informants are listed. Legal and organizational aspects, such as advance information talk, license agreement, search for a suitable room, time schedule and time management and communication with the project are mentioned. Also, the first questionnaire on personal data used for informants recruitment is included.
Temporal behavior of laser induced elastic plate resonances
Creators: name: Laurent, Jérôme
name: Royer, Daniel
name: Prada, Claire
Publisher: name: arXiv
Year: 2014
Subjects: subject: Classical Physics (physics.class-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: This paper investigates the dependence on Poisson's ratio of local plate resonances in low attenuating materials. In our experiments, these resonances are generated by a pulse laser source and detected with a heterodyne interferometer measuring surface displacement normal to the plate. The laser impact induces a set of resonances that are dominated by Zero Group Velocity (ZGV) Lamb modes. For some Poisson's ratio, thickness-shear resonances are also detected. These experiments confirm that the temporal decay of ZGV modes follows a $t^{-0.5}$ law and show that the temporal decay of the thickness resonances is much faster. Similar decays are obtained by numerical simulations achieved with a finite difference code. A simple model is proposed to describe the thickness resonances. It predicts that a thickness mode decays as $t^{-1.5}$ for large times and that the resonance amplitude is proportional to $D^{-1.5}$ where $D$ is the curvature of the dispersion curve $ω(k)$ at $k=0$. This curvature depends on the order of the mode and on the Poisson's ratio, and it explains why some thickness resonances are well detected while others are not.
description: 8 pages, 7 figures. Wave Motion 2014
Enhancement of many-body quantum interference in chaotic bosonic systems
Creators: name: Schlagheck, Peter
name: Ullmo, Denis
name: Urbina, Juan Diego
name: Richter, Klaus
name: Tomsovic, Steven
Publisher: name: Universität Regensburg
Year: 2019
Subjects: subject: 530 Physik

description: Although highly successful, the truncated Wigner approximation (TWA) leaves out many-body quantum interference between mean-field Gross-Pitaevskii solutions as well as other quantum effects, and is therefore essentially classical. Turned around, this implies that if a system's quantum properties deviate from TWA, they must be exhibiting some quantum phenomenon, such as localization, diffraction, or tunneling. Here, we consider in detail a particular interference effect arising from discrete symmetries, which can lead to a significant enhancement of quantum observables with respect to the TWA prediction, and derive an augmented version of the TWA in order to incorporate them. Using the Bose-Hubbard model for illustration, we further show strong evidence for the presence of dynamical localization due to remaining differences between the TWA predictions and quantum results.