cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Generalized Contact Formalism Analysis of the $^4$He$(e,e'pN)$ Reaction
Creators: name: Pybus, J. R.
name: Korover, I.
name: Weiss, R.
name: Schmidt, A.
name: Barnea, N.
name: Higinbotham, D. W.
name: Piasetzky, E.
name: Strikman, M.
name: Weinstein, L. B.
name: Hen, O.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Measurements of short-range correlations in exclusive $^4$He$(e,e'pN)$ reactions are analyzed using the Generalized Contact Formalism (GCF). We consider both instant-form and light-cone formulations with both the AV18 and local N2LO(1.0) nucleon-nucleon ($NN$) potentials. We find that kinematic distributions, such as the reconstructed pair opening angle, recoil neutron momentum distribution, and pair center of mass motion, as well as the measured missing energy, missing mass distributions, are all well reproduced by GCF calculations. The missing momentum dependence of the measured $^4$He$(e,e'pN)$ / $^4$He$(e,e'p)$ cross-section ratios, sensitive to nature of the $NN$ interaction at short-distacnes, are also well reproduced by GCF calculations using either interaction and formulation. This gives credence to the GCF scale-separated factorized description of the short-distance many-body nuclear wave-function.
description: Accepted for publication in Physics Letters B. 8 pages, 4 figures and online supplementary materials
Supplementary Table 1 from Genome communication in plants mediated by organelle–n­ucleus-located proteins
Creators: name: Krupinska, Karin
name: Blanco, Nicolás
name: Oetke, Svenja
name: Zottini, Michela
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Cell Biology
subject: Plant Biology
subject: FOS: Biological sciences

description: List of organelle-nucleus located plant proteins (ON)
Geometric phases and quantum entanglement as building blocks for nonabelian quasiparticle statistics
Creators: name: Stern, Ady
name: von Oppen, Felix
name: Mariani, Eros
Publisher: name: arXiv
Year: 2003
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Some models describing unconventional fractional quantum Hall states predict quasiparticles that obey nonabelian quantum statistics. The most prominent example is the Moore-Read model for the $ν=5/2$ state, in which the ground state is a superconductor of composite fermions, and the charged excitations are vortices in that superconductor. In this paper we develop a physical picture of the nonabelian statistics of these vortices. Considering first the positions of the vortices as fixed, we define a set of single-particle states at and near the core of each vortex, and employ general properties of the corresponding Bogolubov-deGennes equations to write the ground states in the Fock space defined by these single-particle states. We find all ground states to be entangled superpositions of all possible occupations of the single-particle states near the vortex cores, in which the probability for all occupations is equal, and the relative phases vary from one ground state to another. Then, we examine the evolution of the ground states as the positions of the vortices are braided. We find that as vortices move, they accumulate a geometric phase that depends on the occupations of the single-particle states near the cores of other vortices. Thus, braiding of vortices changes the relative phase between different components of a superposition, in which the occupations of the single-particle states differ, and hence transform the system from one ground state to another. These transformations are the source of the nonabelian statistics. Finally, by exploring a "self-similar" form of the many-body wave functions of the ground states, we show the equivalence of our picture and pictures derived previously, in which vortex braiding seemingly affects the occupations of states in the cores of the vortices.
description: 16 pages
Generation of Ultra-Low Power Phononic Combs
Creators: name: Goryachev, Maxim
name: Galliou, Serge
name: Tobar, Michael E.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Applied Physics (physics.app-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We demonstrate excitation of phononic frequency combs in a Bulk Acoustic Wave system at a temperature of $20$mK using a single tone low power signal source. The observed ultra low power threshold is due to a combination of very high quality factor of $4.2\times 10^8$ and relatively strong nonlinear effects. The observed repetition rate of the comb varies from 0.7 to 2Hz and spans over tens of Hertz. The demonstrated system is fully excited via piezoelectricity and does not require mode spectra engineering and external optical or microwave signals. It is shown that the comb profile significantly depends on geometry of excitation and detection electrodes. Observed strong Duffing nonlinearity below the generation threshold suggests that the system is a phononic analogue to Kerr frequency combs excited in monolithic optical microresonators. The ultra-low power regime opens a way of integrating this phononic system with quantum hybrid systems such as impurity defects and superconducting qubits.
Aphytis japonicus DeBach and Azim
Creators: name: Suh, Soo-Jung
name: Evans, Gregory A.
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Aphelinidae
Aphytis
Aphytis japonicus

description: 1. Aphytis japonicus DeBach and Azim * (Fig. 6)
 Material examined. Korea. CN: same locality as C. juniperi, 10 females and 2 males, ex. Carulaspis juniperi (Bouché) on Thuja occidentalis L. (Cupressaceae), 22-vii-2015 (S.J. Suh).
 Diagnosis. Body entirely yellow; forewing with a linea calva; antenna 6-segmented; head without distinct black bars and margins; mesoscutum with usually 10 setae; propodeal crenulae nonoverlapping; tarsi 5-segmented.
description: Published as part of Suh, Soo-Jung & Evans, Gregory A., 2016, A new record of the armored scale genus Carulaspis MacGillivray (Hemiptera: Diaspididae) from Korea and its aphelinid parasitoids (Hymenoptera: Aphelinidae), pp. 1-6 in Insecta Mundi 2016 (466) on page 3, DOI: 10.5281/zenodo.4645815
On the coexistence of the streaming instability and the vertical shear instability in protoplanetary disks
Creators: name: Schäfer, Urs
name: Johansen, Anders
name: Banerjee, Robi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The streaming instability is a leading candidate mechanism to explain the formation of planetesimals. Yet, the role of this instability in the driving of turbulence in protoplanetary disks, given its fundamental nature as a linear hydrodynamical instability, has so far not been investigated in detail. We study the turbulence that is induced by the streaming instability as well as its interaction with the vertical shear instability. For this purpose, we employ the FLASH Code to conduct two-dimensional axisymmetric global disk simulations spanning radii from $1$ au to $100$ au, including the mutual drag between gas and dust as well as the radial and vertical stellar gravity. If the streaming instability and the vertical shear instability start their growth at the same time, we find the turbulence in the dust mid-plane layer to be primarily driven by the streaming instability. It gives rise to vertical gas motions with a Mach number of up to ${\sim}10^{-2}$. The dust scale height is set in a self-regulatory manner to about $1\%$ of the gas scale height. In contrast, if the vertical shear instability is allowed to saturate before the dust is introduced into our simulations, then it continues to be the main source of the turbulence in the dust layer. The vertical shear instability induces turbulence with a Mach number of ${\sim}10^{-1}$ and thus impedes dust sedimentation. Nonetheless, we find the vertical shear instability and the streaming instability in combination to lead to radial dust concentration in long-lived accumulations which are significantly denser than those formed by the streaming instability alone. Thus, the vertical shear instability may promote planetesimal formation by creating weak overdensities that act as seeds for the streaming instability.
description: 20 pages, 14 figures; accepted for publication in A&A; comments welcome
A spatially accurate method for evaluating distributional effects of ecosystem services
Creators: name: Fleischer, Aliza
name: Felsenstein, Daniel
name: Lichter, Michal
name: Fleischer, Aliza
name: Felsenstein, Daniel
name: Lichter, Michal
Publisher: name: Unknown
Year: 2017
Subjects: subject: Agribusiness
subject: Agricultural Finance
subject: ecosystem services
subject: equity
subject: welfare distribution
subject: synthetic spatial micro-data

description: The value of most ecosystem services invariably slips through national accounts. Even when these values are estimated, they are allocated without any particular spatial referencing. Little is known about the spatial and distributional effects arising from changes in ecosystem service provision. This paper estimates spatial equity in ecosystem services provision using a dedicated data disaggregation algorithm that allocates 'synthetic' socioeconomic attributes to households and with accurate geo-referencing. A GIS-based automated procedure is operationalized for three different ecosystem in Israel. A nonlinear function relates household location to each ecosystem: beaches, urban parks and national parks. Benefit measures are derived by modeling household consumer surplus as a function of socio-economic attributes and distance from the ecosystem. These aggregate measures are spatially disaggregated to households. Results show that restraining access to beaches causes a greater reduction in welfare than restraining access to a park. Progressively, high income households lose relatively more in welfare terms than low income households from such action. This outcome is reversed when distributional outcomes are measured in terms of housing price classes. Policy implications of these findings relate to implications for housing policies that attempt to use new development to generate social heterogeneity in locations proximate to ecosystem services.
Searching for diquarks in hadrons
Creators: name: Alexandrou, C.
name: de Forcrand, Ph
name: Lucini, B.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Since the early days of QCD, it has been argued that inside hadrons quarks organise into substructures. Among those, popular pictures of various phenomena (including exotica and colour superconductivity) give a prominent role to diquarks, i.e. to colour antitriplet combinations of two quarks. Using a gauge-invariant setup, which combines the diquark with a static quark, we study spatial correlations of the two light quarks inside the diquark. After illustrating the setup, we discuss our first results for both the scalar (``good'') and the spin one (``bad'') diquark channels. In a regime in which $m_π \simeq 830$ MeV, our data show unambiguously that a scalar diquark forms with a size of $\simeq$ 0.9 fm. For the vector diquark we are able to put a lower bound of 4.1(7) fm on its size. We also investigate the mass splitting between the good and the bad diquark; our findings are compatible with phenomenologically inspired predictions for this quantity.
description: 6 pages, 2 figures, Talk presented at Lattice 2005 (Hadron spectrum and quark masses)
Smoke on the water: CO and H2O in a circumnuclear disc around a quasar at redshift 2.64
Creators: name: Stacey, H. R.
name: Lafontaine, A.
name: McKean, J. P.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present an analysis of observations with the Atacama Large (sub-)Millimetre Array (ALMA) of the 380 GHz water emission line and CO (11-10) emission line from MG J0414+0534, a gravitationally lensed dusty star-forming galaxy that hosts a type 1 quasar. We also present observations at 1.6 GHz with global very long baseline interferometry (VLBI) of the radio source. We confirm the previously reported detection of the 380 GHz water line and that the flux density ratio between the two merging lensed images is reversed with respect to the radio/mm continuum. We further find tentative evidence of variability in the integrated line intensity on timescales of days. We show that the 380 GHz water line has two components of emission: a disc that is around 35 pc in diameter around the quasar, and another component of emission that is offset $\sim$600 pc perpendicular to the disc that lies close to the lensing caustic. With lens modelling of the multi-wavelength data sets, we construct a model for the quasar system consisting of a circumnuclear disc of molecular gas with a size of about 60 pc bisected by radio jets extending to a distance of about 200 pc from the radio core. Our findings suggest that observations with ALMA of high-excitation molecular lines from strongly lensed quasars could allow detailed studies of AGN accretion and feedback at the cosmic peak of black hole and galaxy growth.
description: Accepted by MNRAS. 11 pages, 9 figures
Hyper-Eddington accretion flows onto black holes accompanied by powerful outflows
Creators: name: Takeo, Eishun
name: Inayoshi, Kohei
name: Mineshige, Shin
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We perform two-dimensional radiation hydrodynamical simulations of accretion flows onto black holes (BHs) at the nuclei of protogalaxies, and study the impact of mechanical and radiative feedback on rapid growth of BHs. The outflows deposit mass, momentum and energy into the surrounding medium and prevent mass accretion onto the BH, resulting in the reduction of radiative output. We find that when the BH is embedded in a dense gas core, ionizing radiation attenuated by inefficient BH feeding owing to mechanical feedback hardly affects the gas dynamics at the BH gravitational sphere of influence, from which intense inflows of neutral gas occur at rates substantially exceeding the Eddington limit without impeded by photoionization and heating. Since mechanical power of outflows driven by the rapidly accreting BH is sufficiently strong, bipolar outflows completely evacuate the surrounding gas in the polar region but mass inflows through the equatorial region maintain the BH accretion rate as high as $\sim 300-10^3~\dot{M}_{\rm Edd}$, which is reduced by one order of magnitude from those with radiative feedback alone. Furthermore, we find that the critical gas density required for rapid accretion is lower by a factor of $\sim 3$ nearly independently of BH mass, when mechanical feedback is considered. By studying the dependence on outflow model parameters (e.g., opening angle, mass-loading degree into outflows, velocity), we conclude that contrary to naive expectation, the existence of stronger outflow leads to the transition to rapid accretion phases more efficiently. Rapidly growing BHs inject mechanical power with $\sim 0.1-1\%$ of the radiative luminosity into their host galaxy scales, which is used for cosmological simulations.
description: 16 pages, 11 figures, submitted to MNRAS
Measurable Kac cohomology for bicrossed products
Creators: name: Baaj, Saad
name: Skandalis, Georges
name: Vaes, Stefaan
Publisher: name: arXiv
Year: 2003
Subjects: subject: Operator Algebras (math.OA)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics

description: We study the Kac cohomology for matched pairs of locally compact groups. This cohomology theory arises from the extension theory of locally compact quantum groups. We prove a topological version of the Kac exact sequence and provide methods to compute the cohomology. We give explicit calculations in several examples using results of Moore and Wigner.
description: We added some details on pentagonal cohomology, on resolutions and provided several extra remarks
Bounded Rationality, Satisficing and the Evolution of Economic Thought
Creators: name: Tisdell, Clement A.
name: Tisdell, Clement A.
Publisher: name: Unknown
Year: 2017
Subjects: subject: Institutional and Behavioral Economics
subject: behavioral economics
subject: bounded rationality
subject: cues
subject: ecological rationality
subject: discretionary behavior
subject: precautionary principle
subject: rules of thumb

description: Provides a sketch of the development of the concept of bounded rationality in economic thought. The concept of rationality has several meanings. These different meanings are taken into account in considering the further development of economic thought. Different views of ecological rationality are critically examined in the light of these concepts. Whether or not various theories of behavioral economics can be classified as exhibiting bounded rationality is discussed. Satisficing behavior is commonly associated with bounded rationality but as demonstrated, it is not the only reason for adopting such behavior. The idea of some authors that optimization models under constraints are of little or no relevance to bounded rationality is rejected. Bounded rationality is an important contributor to the diversity of (economic) behaviors. This is stressed. Whether or not a behavior is rational depends to a considerable extent on the situation (the constraints) that decision-makers or actors face. The time-constraint is very important as an influence on the rationality of decisions. Aspects of this are covered.
Effective Hamiltonian and unitarity of the S matrix
Creators: name: Rotter, I.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The properties of open quantum systems are described well by an effective Hamiltonian ${\cal H}$ that consists of two parts: the Hamiltonian $H$ of the closed system with discrete eigenstates and the coupling matrix $W$ between discrete states and continuum. The eigenvalues of ${\cal H}$ determine the poles of the $S$ matrix. The coupling matrix elements $\tilde W_k^{cc'}$ between the eigenstates $k$ of ${\cal H}$ and the continuum may be very different from the coupling matrix elements $W_k^{cc'}$ between the eigenstates of $H$ and the continuum. Due to the unitarity of the $S$ matrix, the $\TW_k^{cc'}$ depend on energy in a non-trivial manner, that conflicts with the assumptions of some approaches to reactions in the overlapping regime. Explicit expressions for the wave functions of the resonance states and for their phases in the neighbourhood of, respectively, avoided level crossings in the complex plane and double poles of the $S$ matrix are given.
description: 17 pages, 7 figures
Discriminant analysis of five Fijian Homalictus species using SNP data from Radiation of tropical island bees and the role of phylogenetic niche conservatism as an important driver of biodiversity
Creators: name: Dorey, James B.
name: Groom, Scott V. C.
name: Freedman, Elisha H.
name: Matthews, Cale S.
name: Davies, Olivia K.
name: Deans, Ella J.
name: Rebola, Celina
name: Stevens, Mark I.
name: Lee, Michael S. Y.
name: Schwarz, Michael P.
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology
subject: 60102 Bioinformatics
subject: FOS: Computer and information sciences
subject: 10202 Biological Mathematics
subject: FOS: Mathematics

description: Discriminant analysis of principal components for the SNP data showing the clustering of each species. Inset graph showing the Bayesian information criterion (BIC) values for each inferred clustering level, with the lowest inferred BIC being the preferred number of clusters.
Practicing urban agriculture right here : integrating the LFS Garden with the Faculty of Land and Food Systems community : management, resources, and budget
Creators: name: McBeath, Carl
name: McDowell, Jill
name: McLeod, Graham
name: McMahon, Christine
name: Melsted, Marnie
name: Thunggawan, Carrine
Publisher: name: The University of British Columbia
Year: 2014

description: As part of UBC Food System Project, our group was given the task of examining specific challenges that the Land and Food Systems Orchard Garden (LFSOG) presently encounters. The objective of scenario 4a is to provide LFSOG with the information, tools and manpower needed to successfully move forward and reach its full potential. The garden is an excellent educational tool that can be used to connect the land and food systems. It is also a space where UBC faculty and students can come together to try and achieve the LFS vision statements. Our group was given the task of researching, discussing and making recommendations surrounding issues of the garden management. Including management plans, budgeting, funding and resources. This was accomplished first by reviewing the vision statements of the LFS faculty. With these visions in mind the group gathered findings and then discussed each task in detail. It was determined that in order for the garden to successfully expand, an organized and well thought-out management plan was need. Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
How efficient is the streaming instability in viscous protoplanetary disks?
Creators: name: Chen, Kan
name: Lin, Min-Kai
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The streaming instability is a popular candidate for planetesimal formation by concentrating dust particles to trigger gravitational collapse. However, its robustness against physical conditions expected in protoplanetary disks is unclear. In particular, particle stirring by turbulence may impede the instability. To quantify this effect, we develop the linear theory of the streaming instability with external turbulence modelled by gas viscosity and particle diffusion. We find the streaming instability is sensitive to turbulence, with growth rates becoming negligible for alpha-viscosity parameters $α\gtrsim \mathrm{St} ^{1.5}$, where $\mathrm{St}$ is the particle Stokes number. We explore the effect of non-linear drag laws, which may be applicable to porous dust particles, and find growth rates are modestly reduced. We also find that gas compressibility increase growth rates by reducing the effect of diffusion. We then apply linear theory to global models of viscous protoplanetary disks. For minimum-mass Solar nebula disk models, we find the streaming instability only grows within disk lifetimes beyond $\sim 10$s of AU, even for cm-sized particles and weak turbulence ($α\sim 10^{-4}$). Our results suggest it is rather difficult to trigger the streaming instability in non-laminar protoplanetary disks, especially for small particles.
description: Accepted by ApJ, see https://minkailin.wixsite.com/minkailin/post/making-planets-in-turbulent-disks-is-not-so-easy for a lay summary
Palaeozoic sedimentation and Caledonian terrane architecture in northwest Svalbard: Indications from U–Pb geochronology and structural analysis
Creators: name: Koglin, Nikola
name: Läufer, Andreas
name: Piepjohn, Karsten
name: Gerdes, Axel
name: Davis, Donald W.
name: Linnemann, Ulf
name: Estrada, Solveig
Publisher: name: Geological Society of London
Year: 2022
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences

description: Supplementary material 3-1
Polydesmidae Leach 1815
Creators: name: Shear, William A.
name: Reddell, James M.
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Diplopoda
Polydesmida
Polydesmidae

description: Genera of Polydesmidae in North America North of Mexico (Keyed in Shear 2012)   Polydesmus Latrielle (4 species, all colonists from Europe), Brachydesmus Heller (1 species, native to Europe), Bidentogon Buckett and Gardner (2 species, California), Calianotus Shelley (3 species, California), Pseudopolydesmus (12 nominal species, eastern United States and southeastern Canada), Scytonotus (9 species, eastern United States, southeastern Canada, Pacific Coast from Alaska to northern California, northern Rocky Mountains), Utadesmus (2 species, Utah, New Mexico), Snoqualmia (2 species, Washington, Idaho) and Retrorsia (2 species, western Oregon and Washington). There are several undescribed genera ranging from Washington to northern California.
description: Published as part of Shear, William A. & Reddell, James M., 2017, Cave millipedes of the United States. XIV. Revalidation of the genus Speorthus Chamberlin, 1952 (Diplopoda, Polydesmida, Macrosternodesmidae), with a description of a new species from Texas and remarks on the families Polydesmidae and Macrosternodesmidae in North America, pp. 1-13 in Insecta Mundi 2017 (529) on page 6, DOI: 10.5281/zenodo.4645845
On the (Lack of) Evolution of the Stellar Mass Function of Massive Galaxies from $z$=1.5 to 0.4
Creators: name: Kawinwanichakij, Lalitwadee
name: Papovich, Casey
name: Ciardullo, Robin
name: Finkelstein, Steven L.
name: Stevans, Matthew L.
name: Wold, Isak G.
name: Jogee, Shardha
name: Sherman, Sydney
name: Florez, Jonathan
name: Gronwall, Caryl
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We study the evolution in the number density of the highest mass galaxies over $0.410.3$ using a forward-modeling method that fully accounts for statistical and systematic uncertainties on stellar mass. From $z$=0.4 to 1.5 the massive end of the SMF shows minimal evolution in its shape: the characteristic mass ($M^\ast$) evolves by less than 0.1 dex ($\pm$0.05 dex); the number density of galaxies with $\log (M_\ast/M_\odot) >11$ stays roughly constant at $\log (n/\mathrm{Mpc}^{-3})$ $\simeq$ $-$3.4 ($\pm$0.05), then declines to $\log (n/\mathrm{Mpc}^{-3})$=$-$3.7 ($\pm$0.05) at $z$=1.5. We discuss the uncertainties in the SMF, which are dominated by assumptions in the star formation history and details of stellar population synthesis models for stellar mass estimations. For quiescent galaxies, the data are consistent with no (or slight) evolution ($\lesssim0.1$ dex) in the characteristic mass nor number density from $z\sim 1.5$ to the present. This implies that any mass growth (presumably through "dry" mergers) of the quiescent massive galaxy population must balance the rate of mass losses from late-stage stellar evolution and the formation of quenching galaxies from the star-forming population. We provide a limit on this mass growth from $z=1.0$ to 0.4 of $ΔM_\ast/M_\ast\leq$ 45% (i.e., $\simeq0.16$ dex) for quiescent galaxies more massive than $10^{11}$ $M_\odot$.
description: 39 pages, 23 figure, accepted for publication in ApJ
Interpretation of transformation parameters λ, κ and δ from Radiation of tropical island bees and the role of phylogenetic niche conservatism as an important driver of biodiversity
Creators: name: Dorey, James B.
name: Groom, Scott V. C.
name: Freedman, Elisha H.
name: Matthews, Cale S.
name: Davies, Olivia K.
name: Deans, Ella J.
name: Rebola, Celina
name: Stevens, Mark I.
name: Lee, Michael S. Y.
name: Schwarz, Michael P.
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology
subject: 60102 Bioinformatics
subject: FOS: Computer and information sciences
subject: 10202 Biological Mathematics
subject: FOS: Mathematics

description: Mean values of branch transformation parameters λ, κ and δ for median (black triangles) and minimum (blue triangles) elevations. Solid black and blue bars indicate 95% highest posterior densities (HPD) for median and minimum elevations, respectively. Parameter values are indicated along the bar showing the minimum and maximum possible values for each factor and whether it supports the taxon cycle (blue), niche conservatism (red) or both (purple).
Predicting Elastic Properties of Materials from Electronic Charge Density Using 3D Deep Convolutional Neural Networks
Creators: name: Zhao, Yong
name: Yuan, Kunpeng
name: Liu, Yinqiao
name: Louis, Steph-Yves
name: Hu, Ming
name: Hu, Jianjun
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Machine Learning (cs.LG)
subject: Neural and Evolutionary Computing (cs.NE)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: I.2.1
subject: 74B99

description: Materials representation plays a key role in machine learning based prediction of materials properties and new materials discovery. Currently both graph and 3D voxel representation methods are based on the heterogeneous elements of the crystal structures. Here, we propose to use electronic charge density (ECD) as a generic unified 3D descriptor for materials property prediction with the advantage of possessing close relation with the physical and chemical properties of materials. We developed an ECD based 3D convolutional neural networks (CNNs) for predicting elastic properties of materials, in which CNNs can learn effective hierarchical features with multiple convolving and pooling operations. Extensive benchmark experiments over 2,170 Fm-3m face-centered-cubic (FCC) materials show that our ECD based CNNs can achieve good performance for elasticity prediction. Especially, our CNN models based on the fusion of elemental Magpie features and ECD descriptors achieved the best 5-fold cross-validation performance. More importantly, we showed that our ECD based CNN models can achieve significantly better extrapolation performance when evaluated over non-redundant datasets where there are few neighbor training samples around test samples. As additional validation, we evaluated the predictive performance of our models on 329 materials of space group Fm-3m by comparing to DFT calculated values, which shows better prediction power of our model for bulk modulus than shear modulus. Due to the unified representation power of ECD, it is expected that our ECD based CNN approach can also be applied to predict other physical and chemical properties of crystalline materials.
description: 15 pages; 5 figures
Koala Extinction: Inefficient Conservation Strategies Identified and Examined – Moral and Ethical Issues
Creators: name: Tisdell, Clement A.
name: Tisdell, Clement A.
Publisher: name: Unknown
Year: 2017
Subjects: subject: Environmental Economics and Policy
subject: biodiversity conservation
subject: ecological economics
subject: environmental ethics
subject: extinction of species
subject: koala conservation
subject: nature conservation
subject: parochialism in conservation

description: Outlines factors contributing to the disappearance of the koala in Australia and the declaration of it as being vulnerable to extinction in Queensland, New South Wales and the Australian Capital Territory. Treating sick and injured koalas is identified as an inefficient strategy for their conservation. Also, in many cases efforts by NGOs and others to save koalas in their neighbourhoods are likely to be ineffective. Reasons (including ethical and moral ones) for the adoption of these types of strategies are outlined. The question is also raised of the extent to which parochialism in the conservation of species is justified. To what extent is the conservation of species justified at a local scale when their existence is secure on a broader geographical scale?
ZAMBURUG'LAR BO'LIMI TAVSIFI, VAKILLARINING TUZILISHI, TARQALISHI VA AHAMIYATI
Creators: name: Abdullayeva, Nozima
Publisher: name: Zenodo
Year: 2025

description: Ushbu tezisda zamburugʻlar boʻlimining umumiy tavsifi, umumiy xususiyatlari anatomik va morfologik tuzilishi, sistematikasi, zamburugʻlarning turlari, tabiatda va inson hayotidagi zamburugʻlarning tutgan oʻrni haqida toʻliq maʼlumot berilgan.
Enhancement of magnetization plateaus in low dimensional spin systems
Creators: name: Metavitsiadis, Alexandros
name: Psaroudaki, Christina
name: Brenig, Wolfram
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the low-energy properties and, in particular, the magnetization process of a spin-1/2 Heisenberg $J_1-J_2$ sawtooth and frustrated chain (also known as zig-zag ladder) with a spatially anisotropic $g$-factor. We treat the problem both analytically and numerically while keeping the $J_2/J_1$ ratio generic. Numerically, we use complete and Lanczos diagonalization as well as the infinite time-evolving block decimation (iTEBD) method. Analytically we employ (non-)Abelian bosonization. Additionally for the sawtooth chain, we provide an analytical description in terms of flat bands and localized magnons. By considering a specific pattern for the $g$-factor anisotropy for both models, we show that a small anisotropy significantly enhances a magnetization plateau at half saturation. For the magnetization of the frustrated chain, we show the destruction of the $1/3$ of the full saturation plateau in favor of the creation of a plateau at half-saturation. For large anisotropies, the existence of an additional plateau at zero magnetization is possible. Here and at higher magnetic fields, the system is locked in the half-saturation plateau, never reaching full saturation.
description: 9 pages, 3 figures
Palaeozoic sedimentation and Caledonian terrane architecture in northwest Svalbard: Indications from U–Pb geochronology and structural analysis
Creators: name: Koglin, Nikola
name: Läufer, Andreas
name: Piepjohn, Karsten
name: Gerdes, Axel
name: Davis, Donald W.
name: Linnemann, Ulf
name: Estrada, Solveig
Publisher: name: Geological Society of London
Year: 2022
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences

description: Supplementary material 3-2
Measurement of Branching Fractions and Resonance Contributions for B0 -> D0bar K+ pi- and Search for B0 -> D0 K+ pi- Decays
Creators: name: The BABAR Collaboration
name: Aubert, B.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Using 226 million $Υ(4S)\to B\bar{B}$ events collected with the BaBar detector at the PEP-II $e^+e^-$ storage ring at the Stanford Linear Accelerator Center, we measure the branching fraction for $B^0\to \bar{D}^0 K^+π^-$, excluding $B^0\to D^{*-} K^+$ to be $ {\cal B}(B^0\to \bar{D}^0 K^+π^-) = (88 \pm 15 \pm 9)\times 10^{-6} . $ We observe $B^0\to \bar{D}^0 K^*(892)^0$ and $B^0\to D_2^*(2460)^- K^+$ contributions. The ratio of branching fractions ${\cal B}(B^0\to D^{*-}K^+)/{\cal B}(B^0\to D^{*-}π^+) = (7.76\pm 0.34 \pm 0.29)%$ is measured separately. The branching fraction for the suppressed mode $B^0\to D^0 K^+π^-$ is $ {\cal B}(B^0\to D^0 K^+π^-) < 19 \times 10^{-6} $ at the 90% confidence level.
description: 7 pages, 3 figures, published on Phys.Rev.Lett. 96, 011803 (2006)
The Role of Farmer’s Trust, Risk and Time Preferences for Contract Choices: Experimental Evidence from the Ghanaian Pineapple Sector
Creators: name: Fischer, Sabine
name: Wollni, Meike
name: Fischer, Sabine
name: Wollni, Meike
Publisher: name: Unknown
Year: 2017
Subjects: subject: Agribusiness
subject: Institutional and Behavioral Economics
subject: International Development
subject: lab in the field experiment
subject: discrete choice experiment
subject: contract choice
subject: preferences
subject: contract farming

description: In the last decades global food value chains have seen the need for increasing vertical coordination in order to secure quality standards. A prominent way to govern the relationships between farmers and agri-business firms are farming contracts. We study the role of trust, risk and time preferences for farmers' contract choices in a discrete choice experiment among Ghanaian pineapple farmers. We find that experimental measures of trust, risk and time preferences can predict preferences for contract attributes. Especially trust has economically important effects on the willingness to pay for transparent quality controls. Differences in preferences for timing of payment and timing of agreement making cannot be explained by trust levels but by time preferences. Risk-sharing in form of reduced quality requirements is less important for risk-seeking individuals compared to risk-neutral or risk-averse farmers. Including behavioral preferences can significantly improve the explanatory power of the models. Our results indicate that preferences affect farmers' participation constraints and argue that a diversification of contract offers might increase the willingness of farmers to participate in contract farming. This has implications for companies who aim at developing stable long-term relationships with farmers.
Constant scalar curvature Kahler metrics on fibred complex surfaces
Creators: name: Fine, Joel
Publisher: name: arXiv
Year: 2004
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: This article finds constant scalar curvature Kahler metrics on certain compact complex surfaces. The surfaces considered are those admitting a holomorphic submersion to a curve, with fibres of genus at least 2. The proof is via an adiabatic limit. An approximate solution is constructed out of the hyperbolic metrics on the fibres and a large multiple of a certain metric on the base. A parameter-dependent inverse function theorem is then used to perturb the approximate solution to a genuine solution in the same cohomology class. The arguments also apply to certain higher dimensional fibred Kahler manifolds.
description: 32 pages, no figures (with minor corrections and a larger font for tired eyes)
Addressing Transboundary Cooperation in the Eastern Nile through the Water-Energy-Food Nexus. Insights from an E-survey and Key Informant Interviews
Creators: name: Berga, Helen
name: Ringler, Claudia
name: Bryan, Elizabeth
name: El Didi, Hagar
name: Elnasikh, Sara
name: Berga, Helen
name: Ringler, Claudia
name: Bryan, Elizabeth
name: El Didi, Hagar
name: Elnasikh, Sara
Publisher: name: Unknown
Year: 2017
Subjects: subject: Resource /Energy Economics and Policy
subject: water-energy-food nexus
subject: transboundary cooperation
subject: stakeholders
subject: Eastern Nile Basin

description: The Nile is the lifeblood of northeastern Africa, and its roles for and interdependency with the national economies it traverses and binds together grow as it moves from source to sea. With rapid economic development—population growth, irrigation development, rural electrification, and overall economic growth—pressures on the Nile’s water resources are growing to unprecedented levels. These drivers of change have already contributed to stark changes in the hydropolitical regime, and new forms of cooperation and cross-sectoral collaboration are needed, particularly in the Eastern Nile Basin countries of Egypt, Ethiopia, Sudan, and South Sudan. As direct sharing of water resources is hampered by unilateral developments, the need has increased for broader, cross-sectoral collaboration around the water, energy, and food sectors. This study is conducted to assess and understand the challenges of and opportunities for cooperation across the water-energy-food nexus nationally in Egypt, Ethiopia, and Sudan, as well as regionally across the Eastern Nile. To gather data, the paper uses an e-survey supplemented with key informant interviews geared toward national-level water, energy, and agriculture stakeholders, chiefly government staff and researchers. Findings from the survey tools suggest that most respondents strongly agree that collaboration across the water, energy, and agriculture sectors is essential to improve resource management in the region. At the same time, there is ample scope for improvement in collaboration across the water, energy, and food sectors nationally. Ministries of water, energy, and food were identified as the key nexus actors at national levels; these would also need to be engaged in regional cross-sectoral collaboration. Respondents also identified a wide range of desirable cross-sectoral actions and investments—both national and regional—chiefly, joint planning and operation of multipurpose infrastructure; investment in enhanced irrigation efficiency; joint rehabilitation of upstream catchments to reduce sedimentation and degradation; and investment in alternative renewable energy projects, such as wind and solar energy.
The formation history of elliptical galaxies
Creators: name: De Lucia, Gabriella
name: Springel, Volker
name: White, Simon D. M.
name: Croton, Darren
name: Kauffmann, Guinevere
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We take advantage of the largest high-resolution simulation of cosmic structure growth ever carried out -- the Millennium Simulation of the concordance LambdaCDM cosmogony -- to study how the star formation histories, ages and metallicities of elliptical galaxies depend on environment and on stellar mass. We concentrate on a galaxy formation model which is tuned to fit the joint luminosity/colour/morphology distribution of low redshift galaxies. Massive ellipticals in this model have higher metal abundances, older luminosity-weighted ages, shorter star formation timescales, but lower assembly redshifts than less massive systems. Within clusters the typical masses, ages and metal abundances of ellipticals are predicted to decrease, on average, with increasing distance from the cluster centre. We also quantify the effective number of progenitors of ellipticals as a function of present stellar mass, finding typical numbers below 2 for M* < 10^{11} Msun, rising to about 5 for the most massive systems. These findings are consistent with recent observational results that suggest ``down-sizing'' or ``anti-hierarchical'' behaviour for the star formation history of the elliptical galaxy population, despite the fact that our model includes all the standard elements of hierarchical galaxy formation and is implemented on the standard, LambdaCDM cosmogony.
description: 12 pages, 11 figures, minor revisions, MNRAS accepted
Fijian Homalictus sampling map from Radiation of tropical island bees and the role of phylogenetic niche conservatism as an important driver of biodiversity
Creators: name: Dorey, James B.
name: Groom, Scott V. C.
name: Freedman, Elisha H.
name: Matthews, Cale S.
name: Davies, Olivia K.
name: Deans, Ella J.
name: Rebola, Celina
name: Stevens, Mark I.
name: Lee, Michael S. Y.
name: Schwarz, Michael P.
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology
subject: 60102 Bioinformatics
subject: FOS: Computer and information sciences
subject: 10202 Biological Mathematics
subject: FOS: Mathematics

description: The Fijian islands that were sampled. Parentheses indicate the period in which they were sampled followed by the number of sequences from each island.
Stability, enhanced gauge symmetry and suppressed cosmological constant in 9D heterotic interpolating models
Creators: name: Itoyama, H.
name: Nakajima, Sota
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate the structure of the moduli space of 9D heterotic interpolating models with a complete set of Wilson line backgrounds and a radius parameter by computing the one-loop partition functions and the cosmological constants and by deriving the massless spectra, paying attention to the region $a \approx 0$ where supersymmetry is asymptotically restoring. We find some special planes and points in the moduli space where the gauge symmetry is enhanced and/or massless fermions appear. The gauge symmetry is maximally enhanced at the minima of the one-loop effective potential where the cosmological constant is negative.
description: 34pages, 2nd version, minor changes made and references added, acknowledgments added
Phylogenetic tree of the Fijian Homalictus from Radiation of tropical island bees and the role of phylogenetic niche conservatism as an important driver of biodiversity
Creators: name: Dorey, James B.
name: Groom, Scott V. C.
name: Freedman, Elisha H.
name: Matthews, Cale S.
name: Davies, Olivia K.
name: Deans, Ella J.
name: Rebola, Celina
name: Stevens, Mark I.
name: Lee, Michael S. Y.
name: Schwarz, Michael P.
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology
subject: 60102 Bioinformatics
subject: FOS: Computer and information sciences
subject: 10202 Biological Mathematics
subject: FOS: Mathematics

description: Maximum credibility tree from Bayesian phylogenetic analysis of Fijian Homalictus based on analysis of the COI gene showing posterior probabilities at nodes. Branch color represents geographic extent.
Macrosternodesmidae Brolemann 1916
Creators: name: Shear, William A.
name: Reddell, James M.
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Diplopoda
Polydesmida
Macrosternodesmidae

description: Genera of Macrosternodesmidae in North America North of Mexico   Nearctodesminae. Nearctodesmus Silvestri (3 species, British Columbia to northern California), Bistulodesmus Shelley (1 species, eastern Washington, northern Idaho), Ergodesmus Chamberlin (2 species, Washington to Montana, caves in southwestern Illinois), Kepolydesmus Chamberlin (1 species, Oregon, Washington, Idaho, Montana), Leonardesmus Shelley and Shear (1 species, Washington; perhaps 3 undescribed species, northern California).
 Macrosternodesminae. Ophiodesmus (Cook) (1 species, introduced from northern Europe to Newfoundland), Chaetaspis (4 species, eastern United States), Speorthus (2 species, caves in New Mexico and Texas), Speodesmus (7 species, caves in Texas and Colorado), Tidesmus (5 species, California, Arizona, Nevada, Baja California Norte), Sequoiadesmus Shear and Shelley (1 species, caves in Sierra Nevada, California), Pratherodesmus (3 species, California, Arizona), and Nevadesmus (1 species, Nevada).
 At least one undescribed genus of Macrosternodesmidae and several undescribed species of Pratherodesmus and Nevadesmus occur in Utah, Arizona and southern California.
 The systematic position of Harpogonopus confluentus Loomis, from the Coast Ranges of southern California and Baja California Norte, Mexico, is not entirely clear (Shelley 1993). The gonopod has nearctodesmine affinities, but the metazonites have rows of setae.
description: Published as part of Shear, William A. & Reddell, James M., 2017, Cave millipedes of the United States. XIV. Revalidation of the genus Speorthus Chamberlin, 1952 (Diplopoda, Polydesmida, Macrosternodesmidae), with a description of a new species from Texas and remarks on the families Polydesmidae and Macrosternodesmidae in North America, pp. 1-13 in Insecta Mundi 2017 (529) on page 6, DOI: 10.5281/zenodo.4645845