cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Social capital and resilience make an employee cooperate for coronavirus measures and lower his/her turnover intention
Creators: name: Kokubun, Keisuke
name: Ino, Yoshiaki
name: Ishimura, Kazuyoshi
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Economics (econ.GN)
subject: FOS: Economics and business

description: An important theme is how to maximize the cooperation of employees when dealing with crisis measures taken by the company. Therefore, to find out what kind of employees have cooperated with the company's measures in the current corona (COVID-19) crisis, and what effect the cooperation has had to these employees/companies to get hints for preparing for the next crisis, the pass analysis was carried out using awareness data obtained from a questionnaire survey conducted on 2,973 employees of Japanese companies in China. The results showed that employees with higher social capital and resilience were more supportive of the company's measures against corona and that employees who were more supportive of corona measures were less likely to leave their jobs. However, regarding fatigue and anxiety about the corona felt by employees, it was shown that it not only works to support cooperation in corona countermeasures but also enhances the turnover intention. This means that just by raising the anxiety of employees, even if a company achieves the short-term goal of having them cooperate with the company's countermeasures against corona, it may not reach the longer-term goal by making them increase their intention to leave. It is important for employees to be aware of the crisis and to fear it properly. But more than that, it should be possible for the company to help employees stay resilient, build good relationships with them, and increase their social capital to make them support crisis measurement of the company most effectively while keeping their turnover intention low.
description: amendment in Table 1
Subgap tunneling through channels of polarons and bipolarons in chain conductors
Creators: name: Matveenko, S. I.
name: Brazovskii, S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We suggest a theory of internal coherent tunneling in the pseudogap region where the applied voltage is below the free electron gap. We consider quasi 1D systems where the gap is originated by a lattice dimerization like in polyacethylene, as well as low symmetry 1D semiconductors. Results may be applied to several types of conjugated polymers, to semiconducting nanotubes and to quantum wires of semiconductors. The approach may be generalized to tunneling in strongly correlated systems showing the pseudogap effect, like the family of High Tc materials in the undoped limit. We demonstrate the evolution of tunneling current-voltage characteristics from smearing the free electron gap down to threshold for tunneling of polarons and further down to the region of bi-electronic tunneling via bipolarons or kink pairs.
description: 14 pages, 8 postscript figures
Electronic supplementary material table S4.pdf from Host–microbiota–insect interactions drive emergent virulence in a complex tree disease
Creators: name: Doonan, James M.
name: Broberg, Martin
name: Denman, Sandra
name: McDonald, James E.
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Environmental Science

description: Forest declines caused by climate disturbance, insect pests and microbial pathogens threaten the global landscape, and tree diseases are increasingly attributed to the emergent properties of complex ecological interactions between the host, microbiota and insects. To address this hypothesis, we combined reductionist approaches (single and polyspecies bacterial cultures) with emergentist approaches (bacterial incoluations in an oak infection model with the addition of insect larvae) to unravel the gene expression landscape and symptom severity of host–microbiota–insect interactions in the Acute Oak Decline (AOD) pathosystem. AOD is a complex decline disease characterized by predisposing abiotic factors, inner bark lesions driven by a bacterial pathobiome, and larval galleries of the bark-boring beetle Agrilus biguttatus. We identified expression of key pathogenicity genes in Brenneria goodwinii, the dominant member of the AOD pathobiome, tissue-specific gene expression profiles, cooperation with other bacterial pathobiome members in sugar catabolism, and demonstrated amplification of pathogenic gene expression in the presence of Agrilus larvae. This study highlights the emergent properties of complex host–pathobiota–insect interactions that underlie the pathology of diseases that threaten global forest biomes.
Quasi-Particle Excitations of the Higgs Vacuum at Finite Energy Density
Creators: name: Patkos, A.
name: Sexty, D.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: Real time excitations in the broken symmetry phase of the classical Abelian Higgs model are investigated numerically in the unitary gauge. Spectral equations of state of its constituent quasi-particles are extracted. Characteristic differences between the statistical correlations of the transverse and of the longitudinal vector modes with the Higgs field are exposed. A method is proposed for the reconstruction of the quasi-free composite field coordinates.
description: This paper is a reviewed and reorganized version of hep-ph/0404235, accepted for publication in Phys. Rev. D
JDoonan_figure S4_ESM.pdf from Host–microbiota–insect interactions drive emergent virulence in a complex tree disease
Creators: name: Doonan, James M.
name: Broberg, Martin
name: Denman, Sandra
name: McDonald, James E.
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Environmental Science

description: Sequencing output of in plant RNA-seq
[Letter from Anna Antoinette Weber van Bosse]
Creators: name: Weber Van Bosse, Anna Antoinette
Publisher: name: Unknown
Year: 1901
Subjects: Heydrich, Franz
Martin, Karl

description: Is forwarding slides of Archaeolithothamnion sibogae, Lithothamnion [martini], Lithophyllum onkodes, Lithothamnion [banda] and Lithophyllum mocaras. Has got all Professor Martin's slides of fossil Lithothamnia. Has seen a young sporangia conceptaculum of Lithophyllum and thus has a much better understanding of the genus.
[Letter from Johannes Schmidt]
Creators: name: Schmidt, Johannes
Publisher: name: Unknown
Year: 1901

description: Has sent the manuscript after completing the proof-reading. Has received a manuscript from Theodor Reinbold. Since both Reinbold and Foslie write about identical species, he suggests that Reinbold might be asked by Foslie to leave the Corallinaceae species out of his manuscript so that they can be printed in Foslie's work.
Measuring the evolution of the most stable optical clock G 117-B15A
Creators: name: Kepler, S. O.
name: Costa, J. E. S.
name: Castanheira, B. G.
name: Winget, D. E.
name: Mullally, Fergal
name: Nather, R. E.
name: Kilic, Mukremin
name: von Hippel, Ted
name: Mukadam, Anjum S.
name: Sullivan, Denis J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report our measurement of the rate of change of period with time dP/dt for the 215 s periodicity in the pulsating white dwarf G 117-B15A, the most stable optical clock known. After 31 years of observations, we have finally obtained a 4 sigma measurement dP/dt_observed = (4.27 +/- 0.80) x 10^{-15} s/s. Taking into account the proper-motion effect of dP/dt_pm = (7.0 +/- 2.0) x 10^{-16} s/s, we obtain a rate of change of period with time of dP/dt = (3.57 +/- 0.82) x 10^{-15} s/s. This value is consistent with the cooling rate in our white dwarf models only for cores of C or C/O. With the refinement of the models, the observed rate of period change can be used to accurately measure the ratio of C/O in the core of the white dwarf.
description: 22 pages, 4 figures
qPCR and RNA-seq expression analysis of putative pathogenicity genes in Gibbsiella quercinecans FRB97 and Brenneria goodwinii FRB141 in axenic culture and co-culture. ;Bacterial growths cultures in phloem, sapwood and broth.;Gel electrophoresis image of extracted RNA;Sequencing output of in vitro RNA-seq;Sequencing output of in plant RNA-seq from Host–microbiota–insect interactions drive emergent virulence in a complex tree disease
Creators: name: Doonan, James M.
name: Broberg, Martin
name: Denman, Sandra
name: McDonald, James E.
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Environmental Science

description: Top: gene expression profile recorded using qPCR, of the G. quercinecans tssD gene (blue) and the B. goodwinii fliA gene (red), cultured in broth, phloem, and sapwood at 2 (circle) and 6 (square) hours post inoculation (HPI). Bottom: gene expression profile recorded using RNA-seq, of the G. quercinecans tssD gene (blue) and the B. goodwinii fliA gene (red), cultured in broth, phloem, and sapwood at 2 (circle) and 6 (square) HPI. Red = fliA transcript copy number in B. goodwinii, Blue = tssD transcript copy number in G. quercinecans. Circle shape = expression level at 2 hours post inoculation. Square shape = expression level at 6 hours post inoculation. Note the changed scale on the y-axis.
Spin relaxation benchmarks and individual qubit addressability for holes in quantum dots
Creators: name: Lawrie, W. I. L.
name: Hendrickx, N. W.
name: van Riggelen, F.
name: Russ, M.
name: Petit, L.
name: Sammak, A.
name: Scappucci, G.
name: Veldhorst, M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate hole spin relaxation in the single- and multi-hole regime in a 2x2 germanium quantum dot array. We use radiofrequency (rf) charge sensing and observe Pauli Spin-Blockade (PSB) for every second interdot transition up to the (1,5)-(0,6) anticrossing, consistent with a standard Fock-Darwin spectrum. We find spin relaxation times $T_1$ as high as 32 ms for a quantum dot with single-hole occupation and 1.2 ms for a quantum dot occupied by five-holes, setting benchmarks for spin relaxation times for hole quantum dots. Furthermore, we investigate the qubit addressability and sensitivity to electric fields by measuring the resonance frequency dependence of each qubit on gate voltages. We are able to tune the resonance frequency over a large range for both the single and multi-hole qubit. Simultaneously, we find that the resonance frequencies are only weakly dependent on neighbouring gates, and in particular the five-hole qubit resonance frequency is more than twenty times as sensitive to its corresponding plunger gate. The excellent individual qubit tunability and long spin relaxation times make holes in germanium promising for addressable and high-fidelity spin qubits in dense two-dimensional quantum dot arrays for large-scale quantum information.
description: 7 Pages (6 Main + 1 Supplementary Information) 5 Figures (4 Main, 1 Supplementary Information)
Can Volcanism Build Hydrogen-Rich Early Atmospheres?
Creators: name: Liggins, Philippa
name: Shorttle, Oliver
name: Rimmer, Paul B.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: Hydrogen in rocky planet atmospheres has been invoked in arguments for extending the habitable zone via N2-H2 and CO2-H2 greenhouse warming, and providing atmospheric conditions suitable for efficient production of prebiotic molecules. On Earth and Super-Earth-sized bodies, where H2-rich primordial envelopes are quickly lost to space, volcanic outgassing can act as a hydrogen source, provided it balances with the loss rate from the top of the atmosphere. Here, we show that both Earth-like and Mars-like planets can sustain atmospheric H2 fractions of several percent across relevant magmatic fO2 ranges. In general this requires hydrogen escape to operate somewhat less efficiently than the diffusion limit. We use a thermodynamical model of magma degassing to determine which combinations of magma oxidation, volcanic flux, and hydrogen escape efficiency can build up appreciable levels of hydrogen in a planet's secondary atmosphere. On a planet similar to the Archean Earth and with a similar magmatic fO2, we suggest that the mixing ratio of atmospheric hydrogen could have been in the range 0.2-3%. A planet erupting magmas around the Iron-Wustite (IW) buffer (i.e., ~3 log fO2 units lower than Archean Earth's), but with otherwise similar volcanic fluxes and H2 loss rates to early Earth, could sustain an atmosphere with approximately 10-20% H2. For an early Mars-like planet with magmas around IW, but a lower range of surface pressures and volcanic fluxes compared to Earth, an atmospheric H2 mixing ratio of 2-8% is possible. On early Mars, this H2 mixing ratio could be sufficient to deglaciate the planet. However, the sensitivity of these results to primary magmatic water contents and volcanic fluxes show the need for improved constraints on the crustal recycling efficiency and mantle water contents of early Mars.
description: Submitted with reviewer comments to Earth and Planetary Science Letters
Cosmological analogies, Lagrangians, and symmetries for convective-radiative heat transfer
Creators: name: Faraoni, Valerio
name: Atieh, Farah
name: Dussault, Steve
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Classical Physics (physics.class-ph)
subject: Popular Physics (physics.pop-ph)
subject: FOS: Physical sciences

description: A formal analogy between the Friedmann equation of relativistic cosmology and models of convective-radiative cooling/heating of a body (including Newton's, Dulong-Petit's, Newton-Stefan's laws, and a generalization) is discussed. The analogy highlights Lagrangians, symmetries, and mathematical properties of the solutions of these cooling laws.
description: 16 pages, to appear in Eur. Phys. J. C
Dynamic tides in rotating objects: orbital circularisation of extra solar planets for realistic planet models
Creators: name: Ivanov, P. B.
name: Papaloizou, J. C. B.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: (abbreviated) We consider the problem of the tidal capture or circularisation from large eccentricity of a uniformly rotating object. We extend the self-adjoint formalism introduced in Papaloizou \& Ivanov 2005 (PI) to derive general expressions for the energy and angular momentum transfered when the planet or a star passes through periastron in a parabolic or highly eccentric orbit around a central mass, without making a low frequency approximation as was done in PI. We show how these can be adapted to the low frequency limit in which only inertial modes contribute to the energy and angular momentum transfer. We calculate the inertial mode eigenspectrum for planet models of one and five Jupiter masses $M_J,$ without a solid core, with different radii corresponding to different ages. We consider the multi-passage problem when there is no dissipation finding that stochastic instability resulting in the stochastic gain of inertial mode energy over many periastron passages occurs under similar conditions to those already found for the $f$ modes. We apply our calculations to the problem of the tidal circularisation of the orbits of the extra solar planets in a state of pseudo synchronisation, and find that inertial mode excitation dominates the tidal interaction for $1 M_J$ planets that start with semi- major axes less than $10 AU$ and end up on circular orbits with final period in the $4-6$ day range. It is potentially able to account for initial circularisation up to a final $6$ day period within a few $Gyr$ But in the case of $5M_J$ oscillation modes excited in the star are more important.
description: Submitted to MNRAS, resolution of several figures has been reduced
Anisotropic flow in AuAu and CuCu at 62 GeV and 200 GeV
Creators: name: Wang, Gang
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We present STAR's measurements of directed flow (v_1) and elliptic flow (v_2) for charged hadrons in AuAu collisions at 62 and 200 GeV, as a function of pseudorapidity, p_t and centrality. v_2 results in CuCu collisions at 200 GeV are also presented.
description: 4 pages, 6 figures, Quark Matter 2005 proceedings
Collective radiation from distant emitters
Creators: name: Sinha, Kanu
name: González-Tudela, Alejandro
name: Lu, Yong
name: Solano, Pablo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Waveguides allow for direct coupling of emitters separated by large distances, offering a path to connect remote quantum systems. However, when facing the distances needed for practical applications, retardation effects due to the finite speed of light are often overlooked. Previous works studied the non-Markovian dynamics of emitters with retardation, but the properties of the radiated field remain mostly unexplored. By considering a toy model of two distant two-level atoms coupled through a waveguide, we observe that the spectrum of the radiated field exhibits non-Markovian features such as linewidth broadening beyond standard superradiance, or narrow Fano resonance-like peaks. We also show that the dipole-dipole interaction decays exponentially with distance as a result of retardation, with the range determined by the atomic linewidth. We discuss a proof-of-concept implementation of our results in a superconducting circuit platform.
description: 13 pages, 6 figures, comments are welcome
Willers, Dietrich: Begegnung von Heidentum und Christentum im spätantiken Ägypten ...
Creators: name: Rist, Josef
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 81 (1997): Oriens christianus, Band 81
Magnetic and transport properties in Gd$_{1-x}$Sr$_x$CoO$_{3}$ ($x$= 0.10-0.70)
Creators: name: Luo, X. G.
name: Li, H.
name: Chen, X. H.
name: Xiong, Y. M.
name: Wang, G. Y.
name: Wang, C. H.
name: Miao, W. J.
name: Li, X.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Magnetic and transport properties of polycrystalline Gd$_{1-x}$Sr$_x$CoO$_{3}$ ($x$= 0.10-0.70) are investigated systemically. Cluster-glass magnetism for $x \leq$ 0.45 and long-range ferromagnetic order in higher doping level are observed. Transport measurements indicate insulator-like behaviors for the samples with $x \leq$ 0.30, and an insulator-metal (IM) transition around $x$ = 0.35, and metallic behaviors for higher $x$ samples. In contrast to La$_{1-x}$Sr$_{x}$COO$_{3}$, the striking feature is that the system reenters insulator-like state for $x \geq$ 0.60, and the long-range ferromagnetic order and IM transition take place in samples with higher Sr content. It could be attributed to the enhancement of low-spin state stability for the trivalent Co ions due to the small radius of Gd$^{3+}$ ion.
description: 8 pages, 9 figures
[Letter from Karl August Theodor Reinbold]
Creators: name: Reinbold, Karl August Theodor
Publisher: name: Unknown
Year: 1901

description: Is grateful for the comments on the algae. Asks Foslie to ignore for the moment the request for an algae collection, because it is not urgent. Informs that he has identified a specimen from the Caroline Islands as a Squamariacea, with full reservation.
Information Transferring in the Benefit of Policy Building
Creators: name: Medeiros, Sabrina Evangelista
Publisher: name: Zenodo
Year: 2021
Subjects: Semantics, Interoperability

description: ENDORSE - The European Data Conference on Reference Data and Semantics The purpose of this research is to show how practitioners´ (actors) interaction may add to semantics and interoperability.
description: Presented in 17th MAR 2021 - EUROPEAN UNION - ENDORSE CONFERENCE
Hybrid Low-Power Wide-Area Mesh Network for IoT Applications
Creators: name: Jiang, Xiaofan
name: zhang, Heng
name: Yi, Edgardo Alberto Barsallo
name: Raghunathan, Nithin
name: Mousoulis, Charilaos
name: Chaterji, Somali
name: Peroulis, Dimitrios
name: Shakouri, Ali
name: Bagchi, Saurabh
Publisher: name: arXiv
Year: 2020
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: The recent advancement of the Internet of Things (IoT) enables the possibility of data collection from diverse environments using IoT devices. However, despite the rapid advancement of low-power communication technologies, the deployment of IoT networks still faces many challenges. In this paper, we propose a hybrid, low-power, wide-area network (LPWAN) structure that can achieve wide-area communication coverage and low power consumption on IoT devices by utilizing both sub-GHz long-range radio and 2.4 GHz short-range radio. Specifically, we constructed a low-power mesh network with LoRa, a physical-layer standard that can provide long-range (kilometers) point-to-point communication using custom time-division multiple access (TDMA). Furthermore, we extended the capabilities of the mesh network by enabling ANT, an ultra-low-power, short-range communication protocol to satisfy data collection in dense device deployments. Third, we demonstrate the performance of the hybrid network with two real-world deployments at the Purdue University campus and at the university-owned farm. The results suggest that both networks have superior advantages in terms of cost, coverage, and power consumption vis-à-vis other IoT solutions, like LoRaWAN.
Schüssler, Karlheinz (Hrsg.): Das sahidistische Alter und Neue Testament sa 1-20, Wiesbaden 1955
Creators: name: Müller, Caspar Detlef G.
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 81 (1997): Oriens christianus, Band 81
Far-Field Radiative Thermal Rectification with Bulk Materials
Creators: name: Sarkar, Sreyash
name: Nefzaoui, Elyes
name: Basset, Philippe
name: Bourouina, Tarik
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applied Physics (physics.app-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In this paper, we explore the far-field radiative thermal rectification potential of common materials such as metals, dielectrics and doped semi-conductors using radiative and thermo-radiative properties extracted from literature. Ten different materials are considered. The rectification coefficient is then calculated for 44 pairs of materials; each pair can be used for the two terminals of a radiative thermal diode. A thermal bias of 200 K is considered. The choice of materials and thermal bias value is only bound by data availability in literature. Obtained results, highlight new candidate materials for far-field radiative thermal rectification. They also highlight materials where thermal rectification is not negligible and should be considered with care in heat transfer calculations when considering systems subject to a comparable thermal bias and where these materials are used. Among the materials studied, undoped Indium Arsenide (InAs) shows great promise to be employed for thermal rectification, with a thermal rectification ratio reaching 90.5% in combination with other materials. Obtained results pave the way for an optimized design of thermal radiation control and management devices such as thermal diodes.
Random marks on paper : subtitle non-photorealistic rendering with small primitives
Creators: name: Secord, Adrian Joseph
Publisher: name: University of British Columbia
Year: 2009

description: Non-photorealistic rendering is a branch of computer graphics which draws heavily from the traditional artistic disciplines such as painting, drawing, and etching. The emphasis of this research area is to provide rendering styles to artists that communicate, elucidate and express ideas clearly and with style without necessarily reproducing every detail. This dissertation presents two general approaches to reproducing a greyscale input image with small primitives: strokes, stipples or hatch marks. The first approach probabilistically places primitives on the output canvas and achieves very fast, "sketchy" renderings. The second approach, complementary to the first and based on weighted centroidal Voronoi diagrams, places each primitive carefully in relation to the others and minimises unnecessary overlap between primitives. The resulting drawings have a very careful appearance and reproduce the input image faithfully.
Testing the Universal Structured Jet Models of Gamma-Ray Bursts by BATSE Observations
Creators: name: Cui, X. H.
name: Liang, E. W.
name: Lu, R. J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Assuming that the observed gamma-ray burst (GRB) rate as a function of redshift is proportional to a corrected star formation rate, we derive the empirical distribution of the viewing angles of long BATSE GRBs, $P^{\rm em}(θ)$, and the distribution of these bursts in the plane of $θ$ against redshift, $P^{\rm em}(θ, z)$, by using a tight correlation between $E_γ$) and $E_{\rm p}^{'}$). Our results show that $P^{\rm em}(θ)$ is well fitted by a log-normal distribution centering at $\log θ/{\rm rad}=-0.76$ with a width of $σ_{\log θ}=0.57$. We test different universal structured jet models by comparing model predictions with our empirical results. To make the comparisons reasonable, an "effective" threshold, which corresponds to the sample selection criteria of the long GRB sample, is used. We find that the predictions of a two-Gaussian jet model are roughly consistent with our empirical results. A brief discussion shows that cosmological effect on the $E_γ-E_{\rm p}^{'}$ relation does not significantly affect our results, but sample selection effects on this relationship might significantly influence our results.
description: 5 pages, 6 figures, accepted for publication in AJ
Linear instability of stationary solutions for the Korteweg-de Vries equation on a star graph
Creators: name: Pava, Jaime Angulo
name: Cavalcante, Márcio
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: The aim of this work is to establish a linear instability criterium of stationary solutions for the Korteweg-de Vries model on a star graph with a structure represented by a finite collections of semi-infinite edges. By considering a boundary condition of $δ$-type interaction at the graph-vertex, we show that the continuous tail and bump profiles are linearly unstable in a balanced star graph. The use of the analytic perturbation theory of operators and the extension theory of symmetric operators is a piece fundamental in our stability analysis. The arguments presented in this investigation has prospects for the study of the instability of stationary waves solutions of other nonlinear evolution equations on star graphs.
description: 34 pages, 5 figures
Supplemental materials including four figures and three tables from Pollen grain size associated with pollinator feeding strategy
Creators: name: Hao, Kai
name: Zhi-Xi Tian
name: Wang, Zi-Chen
name: Shuang-Quan Huang
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology
subject: Plant Biology

description: Photos showing variation in pollen size and pollinator foraging pollen behaviours in the studied flowering species; three testing hypotheses and kind of evidence are presented in Table S1, raw dataset in Table S2 and summary of previous studies of trait correlations on pollen size and style length or stigma depth or pollen number in Table S3, with a list of 22 publications.
Troupeau, Gérard: Etudes sur le christianisme arabe au Moyen Age
Creators: name: Kaufhold, Hubert
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 81 (1997): Oriens christianus, Band 81
Low-$Q^2$ partons in p-p and Au-Au collisions
Creators: name: Trainor, Thomas A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We describe correlations of low-$Q^2$ parton fragments on transverse rapidity $y_t$ and angles $(η,ϕ)$ from p-p and Au-Au collisions at $\sqrt{s} =$ 130 and 200 GeV. Evolution of correlations on $y_t$ from p-p to more-central Au-Au collisions shows evidence for parton dissipation. Cuts on $y_t$ isolate angular correlations on $(η,ϕ)$ for low-$Q^2$ partons which reveal a large asymmetry about the jet thrust axis in p-p collisions favoring the azimuth direction. Evolution of angular correlations with increasing Au-Au centrality reveals a rotation of the asymmetry to favor pseudorapidity. Angular correlations of transverse momentum $p_t$ in Au-Au collisions access temperature/velocity structure resulting from low-$Q^2$ parton scattering. $p_t$ autocorrelations on $(η,ϕ)$, obtained from the scale dependence of $$ fluctuations, reveal a complex parton dissipation process in heavy ion collisions which includes the possibility of collective bulk-medium recoil in response to parton stopping.
description: 6 pages, 4 figures, XXXV International Symposium on Multiparticle Dynamics 2005, Krom\^{e}\^{r}\'{i}\^{z}, Czech Republic, August 9-15, 2005
electronic supplementary table S3.pdf from Host–microbiota–insect interactions drive emergent virulence in a complex tree disease
Creators: name: Doonan, James M.
name: Broberg, Martin
name: Denman, Sandra
name: McDonald, James E.
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Environmental Science

description: Forest declines caused by climate disturbance, insect pests and microbial pathogens threaten the global landscape, and tree diseases are increasingly attributed to the emergent properties of complex ecological interactions between the host, microbiota and insects. To address this hypothesis, we combined reductionist approaches (single and polyspecies bacterial cultures) with emergentist approaches (bacterial incoluations in an oak infection model with the addition of insect larvae) to unravel the gene expression landscape and symptom severity of host–microbiota–insect interactions in the Acute Oak Decline (AOD) pathosystem. AOD is a complex decline disease characterized by predisposing abiotic factors, inner bark lesions driven by a bacterial pathobiome, and larval galleries of the bark-boring beetle Agrilus biguttatus. We identified expression of key pathogenicity genes in Brenneria goodwinii, the dominant member of the AOD pathobiome, tissue-specific gene expression profiles, cooperation with other bacterial pathobiome members in sugar catabolism, and demonstrated amplification of pathogenic gene expression in the presence of Agrilus larvae. This study highlights the emergent properties of complex host–pathobiota–insect interactions that underlie the pathology of diseases that threaten global forest biomes.
JDoonan_figure S3_ESM.pdf from Host–microbiota–insect interactions drive emergent virulence in a complex tree disease
Creators: name: Doonan, James M.
name: Broberg, Martin
name: Denman, Sandra
name: McDonald, James E.
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Environmental Science

description: Sequencing output of in vitro RNA-seq
A dynamo amplifies the magnetic field of a Milky-Way-like galaxy
Creators: name: Ntormousi, Evangelia
name: Tassis, Konstantinos
name: Del Sordo, Fabio
name: Fragkoudi, Francesca
name: Pakmor, Rüdiger
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The magnetic fields of spiral galaxies are so strong that they cannot be primordial. Their typical values are over one billion times higher than any value predicted for the early Universe. Explaining this immense growth and incorporating it in galaxy evolution theories is one of the long-standing challenges in astrophysics. So far, the most successful theory for the sustained growth of the galactic magnetic field is the alpha-omega dynamo. This theory predicts a characteristic dipolar or quadrupolar morphology for the galactic magnetic field, which has been observed in external galaxies. However, so far, there has been no direct demonstration of a mean-field dynamo operating in direct, multi-physics simulations of spiral galaxies. We do so in this work. We employ numerical models of isolated, star-forming spiral galaxies that include a magnetized gaseous disk, a dark matter halo, stars, and stellar feedback. Naturally, the resulting magnetic field has a complex morphology that includes a strong random component. Using a smoothing of the magnetic field on small scales, we are able to separate the mean from the turbulent component and analyze them individually. We find that a mean-field dynamo naturally occurs as a result of the dynamical evolution of the galaxy and amplifies the magnetic field by an order of magnitude over half a Gyr. Despite the highly dynamical nature of these models, the morphology of the mean component of the field is identical to analytical predictions. This result underlines the importance of the mean-field dynamo in galactic evolution. Moreover, by demonstrating the natural growth of the magnetic field in a complex galactic environment, it brings us a step closer to understanding the cosmic origin of magnetic fields.
description: Accepted for publication in Astronomy & Astrophysics
Cell-Free Satellite-UAV Networks for 6G Wide-Area Internet of Things
Creators: name: Liu, Chengxiao
name: Feng, Wei
name: Chen, Yunfei
name: Wang, Cheng-Xiang
name: Ge, Ning
Publisher: name: arXiv
Year: 2020
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In fifth generation (5G) and beyond Internet of Things (IoT), it becomes increasingly important to serve a massive number of IoT devices outside the coverage of terrestrial cellular networks. Due to their own limitations, unmanned aerial vehicles (UAVs) and satellites need to coordinate with each other in the coverage holes of 5G, leading to a cognitive satellite-UAV network (CSUN). In this paper, we investigate multi-domain resource allocation for CSUNs consisting of a satellite and a swarm of UAVs, so as to improve the efficiency of massive access in wide areas. Particularly, the cell-free on-demand coverage is established to overcome the cost-ineffectiveness of conventional cellular architecture. Opportunistic spectrum sharing is also implemented to cope with the spectrum scarcity problem. To this end, a process-oriented optimization framework is proposed for jointly allocating subchannels, transmit power and hovering times, which considers the whole flight process of UAVs and uses only the slowly-varying large-scale channel state information (CSI). Under the on-board energy constraints of UAVs and interference temperature constraints from UAV swarm to satellite users, we present iterative multi-domain resource allocation algorithms to improve network efficiency with guaranteed user fairness. Simulation results demonstrate the superiority of the proposed algorithms. Moreover, the adaptive cell-free coverage pattern is observed, which implies a promising way to efficiently serve wide-area IoT devices in the upcoming sixth generation (6G) era.
description: 16 Pages, 9 figures, to be published in IEEE Journal on Selected Areas in Communications
Detecting dark energy in long baseline neutrino oscillations
Creators: name: Gu, Pei-Hong
name: Bi, Xiao-Jun
name: Feng, Bo
name: Young, Bing-Lin
name: Zhang, Xinmin
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this paper, we discuss a possibility of studying properties of dark energy in long baseline neutrino oscillation experiments. We consider two types of models of neutrino dark energy. For one type of models the scalar field is taken to be quintessence-like and for the other phantom-like. In these models the scalar fields couple to the neutrinos to give rise to a spatially varying neutrino masses. We will show that the two types of models predict different behaviors of the spatial variation of the neutrino masses inside Earth and consequently result in different signals in long baseline neutrino oscillation experiments.
description: 9 pages, 6 figures
JDoonan_figureS1_ESM.pdf from Host–microbiota–insect interactions drive emergent virulence in a complex tree disease
Creators: name: Doonan, James M.
name: Broberg, Martin
name: Denman, Sandra
name: McDonald, James E.
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Environmental Science

description: Bacterial growths cultures in phloem, sapwood and broth.
Recurrence for persistent random walks in two dimensions
Creators: name: Lenci, Marco
Publisher: name: arXiv
Year: 2005
Subjects: subject: Probability (math.PR)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 60G50, 37B20, 60K37, 82C41

description: We discuss the question of recurrence for persistent, or Newtonian, random walks in Z^2, i.e., random walks whose transition probabilities depend both on the walker's position and incoming direction. We use results by Toth and Schmidt-Conze to prove recurrence for a large class of such processes, including all "invertible" walks in elliptic random environments. Furthermore, rewriting our Newtonian walks as ordinary random walks in a suitable graph, we gain a better idea of the geometric features of the problem, and obtain further examples of recurrence.
description: 20 pages, 7 figures
THE FUTURE OF THE LAND GRANT UNIVERSITY SYSTEM
Creators: name: Diamantides, Jerry
name: Weaver, Thomas F.
name: Diamantides, Jerry
name: Weaver, Thomas F.
Publisher: name: Unknown
Year: 1993
Subjects: Teaching/Communication/Extension/Profession

description: Since 1980, incremental state and national policy decisions concerning public higher education have had a variety of effects on students and institutions. Although there has been very little research, most of these effects appear to be detrimental to the health of the system of public higher education and to the nation's stock of human capital. A thorough economic analysis of the effects of policy changes on public higher education is needed to guide the system into the 21st century.
Integration through transients for Brownian particles under steady shear
Creators: name: Fuchs, Matthias
name: Cates, Michael E.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Starting from the microscopic Smoluchowski equation for interacting Brownian particles under stationary shearing, exact expressions for shear-dependent steady-state averages, correlation and structure functions, and susceptibilities are obtained, which take the form of generalized Green-Kubo relations. They require integration of transient dynamics. Equations of motion with memory effects for transient density fluctuation functions are derived from the same microscopic starting point. We argue that the derived formal expressions provide useful starting points for approximations in order to describe the stationary non-equilibrium state of steadily sheared dense colloidal dispersions.
description: 17 pages, Submitted to J. Phys.: Condens. Matter; revised version with minor corrections
[Letter from Hans Schintz on behalf of Die Direction des Botanischen Gartens und des Botanischen Museum der Universität Zürich]
Creators: name: Des Botanischen Gartens Und Des Botanischen Museum Der Universität Zürich, Hans Schintz On Behalf Of Die Direction
Publisher: name: Unknown
Year: 1901

description: Expresses gratitude for the papers on new Melobesia and Corallinaceae.
Thermalisation of a trapped one-dimensional Bose gas via diffusion
Creators: name: Bastianello, Alvise
name: De Luca, Andrea
name: Doyon, Benjamin
name: De Nardis, Jacopo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: For a decade the fate of a one-dimensional gas of interacting bosons in an external trapping potential remained mysterious. We here show that whenever the underlying integrability of the gas is broken by the presence of the external potential, the inevitable diffusive rearrangements between the quasiparticles, quantified by the diffusion constants of the gas, eventually lead the system to thermalise at late times. We show that the full thermalising dynamics can be described by the generalised hydrodynamics with diffusion and force terms, and we compare these predictions with numerical simulations. Finally, we provide an explanation for the slow thermalisation rates observed in numerical and experimental settings: the hydrodynamics of integrable models is characterised by a continuity of modes, which can have arbitrarily small diffusion coefficients. As a consequence, the approach to thermalisation can display pre-thermal plateau and relaxation dynamics with long polynomial finite-time corrections.
description: 5 pages + SM, 3 figures, typos corrected, references added
FACTORS AFFECTING THE ADOPTION OF SUSTAINABLE AGRICULTURAL PRACTICES
Creators: name: D'Souza, Gerard E.
name: Cyphers, Douglas
name: Phipps, Tim T.
name: D'Souza, Gerard E.
name: Cyphers, Douglas
name: Phipps, Tim T.
Publisher: name: Unknown
Year: 1993
Subjects: Farm Management

description: The extent to which individual factors influence the adoption of sustainable agricultural practices is estimated using a logit model and data from a 1990 survey of West Virginia producers. The results are, as expected, different than those for conventional agricultural technologies. For example, the effects of human capital characteristics are significant, while those for structural and institutional characteristics are not. However, the likelihood of adoption of sustainable agricultural practices is affected most by the environmental characteristic of whether or not the producer is aware that ground water contamination exists on his farm. This creates an important "awareness effect" upon which policies to promote sustainable agriculture adoption can be formulated. It also implies the existence of a derived demand for sustainable agriculture.
Martins_figures S1-S5_ESM from Shifts in sexual dimorphism across a mass extinction in ostracods: implications for sexual selection as a factor in extinction risk
Creators: name: Martins, Maria João Fernandes
name: Hunt, Gene
name: Carmi Milagros Thompson
name: Lockwood, Rowan
name: Swaddle, John P.
name: T. Markham Puckett
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 40308 Palaeontology (incl. Palynology)
subject: FOS: Earth and related environmental sciences

description: Supplementary figures showing a map of sample localities (figure S1), dimorphism patterns by family (figure S2), shape dimorphism changes in the late Cretaceous versus Paleocene (figure S3), K/Pg dimorphism changes within genera (figure S4), and generic selectivity results using alternate taxonomy (figure S5).
Sequentially optimized projections in X-ray imaging
Creators: name: Burger, Martin
name: Hauptmann, Andreas
name: Helin, Tapio
name: Hyvönen, Nuutti
name: Puska, Juha-Pekka
Publisher: name: arXiv
Year: 2020
Subjects: subject: Numerical Analysis (math.NA)
subject: Image and Video Processing (eess.IV)
subject: Signal Processing (eess.SP)
subject: FOS: Mathematics
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: 62K05, 65F22

description: This work applies Bayesian experimental design to selecting optimal projection geometries in (discretized) parallel beam X-ray tomography assuming the prior and the additive noise are Gaussian. The introduced greedy exhaustive optimization algorithm proceeds sequentially, with the posterior distribution corresponding to the previous projections serving as the prior for determining the design parameters, i.e. the imaging angle and the lateral position of the source-receiver pair, for the next one. The algorithm allows redefining the region of interest after each projection as well as adapting parameters in the (original) prior to the measured data. Both A and D-optimality are considered, with emphasis on efficient evaluation of the corresponding objective functions. Two-dimensional numerical experiments demonstrate the functionality of the approach.
description: 23 pages, 8 figures
Production and persistence of extreme two-temperature plasmas in radiative relativistic turbulence
Creators: name: Zhdankin, Vladimir
name: Uzdensky, Dmitri A.
name: Kunz, Matthew W.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Turbulence is a predominant process for energizing electrons and ions in collisionless astrophysical plasmas, and thus is responsible for shaping their radiative signatures (luminosity, spectra, and variability). To better understand the kinetic properties of a collisionless radiative plasma subject to externally driven turbulence, we investigate particle-in-cell simulations of relativistic plasma turbulence with external inverse Compton cooling acting on the electrons. We find that ions continuously heat up while electrons gradually cool down (due to the net effect of radiation), and hence the ion-to-electron temperature ratio $T_i/T_e$ grows in time. We show that $T_i/T_e$ is limited only by the size and duration of the simulations (reaching $T_i/T_e \sim 10^3$), indicating that there are no efficient collisionless mechanisms of electron-ion thermal coupling. This result has implications for models of radiatively inefficient accretion flows, such as observed in the Galactic Center and in M87, for which so-called two-temperature plasmas with $T_i/T_e \gg 1$ have been invoked to explain their low luminosity. Additionally, we find that electrons acquire a quasi-thermal distribution (dictated by the competition of turbulent particle energization and radiative cooling), while ions undergo efficient nonthermal acceleration (acquiring a harder distribution than in equivalent non-radiative simulations). There is a modest nonthermal population of high-energy electrons that are beamed intermittently in space, time, and direction; these beamed electrons may explain rapid flares in certain high-energy astrophysical systems (e.g., in the Galactic Center). These numerical results demonstrate that extreme two-temperature plasmas can be produced and maintained by relativistic radiative turbulence.
description: 8 pages, 5 figures, submitted for publication