cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Spin-split bands cause the indirect band gap of (CH$_3$NH$_3$)PbI$_3$: Experimental evidence from circular photogalvanic effect
Creators: name: Niesner, Daniel
name: Hauck, Martin
name: Shrestha, Shreetu
name: Levchuk, Ievgen
name: Matt, Gebhard J.
name: Osvet, Andres
name: Batentschuk, Miroslaw
name: Brabec, Christoph
name: Weber, Heiko B.
name: Fauster, Thomas
Publisher: name: arXiv
Year: 2017
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Long carrier lifetimes and diffusion lengths form the basis for the successful application of the organic-inorganic perovskite (CH$_3$NH$_3$)PbI$_3$ in solar cells and lasers. The mechanism behind the long carrier lifetimes is still not completely understood. Spin-split bands and a resulting indirect band gap have been proposed by theory. Using near band-gap left-handed and right-handed circularly polarized light we induce photocurrents of opposite directions in a single-crystal (CH$_3$NH$_3$)PbI$_3$ device at low temperature ($4~\mathrm{K}$). The phenomenom is known as the circular photogalvanic effect and gives direct evidence for phototransport in spin-split bands. Simultaneous photoluminecence measurements show that the onset of the photocurrent is below the optical band gap. The results prove that an indirect band gap exists in (CH$_3$NH$_3$)PbI$_3$ with broken inversion symmetry as a result of spin-splittings in the band structure. This information is essential for understanding the photophysical properties of organic-inorganic perovskites and finding lead-free alternatives. Furthermore, the optically driven spin currents in (CH$_3$NH$_3$)PbI$_3$ make it a candidate material for spintronics applications.
Stethorus
Creators: name: Swezey, O. H.
Publisher: name: Zenodo
Year: 1942
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Coccinellidae
Stethorus

description: 12.Stethorus species. Piti, May 2, on mango, Swezey; Upi Trail, May 5, Swezey; Tumon, May 30, on Ba.rringtonia, Swezey; Barrigacla, June 12, Usinger, July 6, on Morinda, Swezey. A still smaller black species which was collected at several places. Determined by E. A. Chapin.
description: Published as part of Swezey, O. H., 1942, Miscellaneous Families of Guam Coleoptera, pp. 150-171 in Insects of Guam I, Honolulu, Hawaii :Bernice P. Bishop Museum on page 161, DOI: 10.5281/zenodo.5167701
Unsupervised Ensemble Ranking of Terms in Electronic Health Record Notes Based on Their Importance to Patients
Creators: name: Chen, Jinying
name: Yu, Hong
Publisher: name: arXiv
Year: 2017
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences
subject: I.2.7

description: Background: Electronic health record (EHR) notes contain abundant medical jargon that can be difficult for patients to comprehend. One way to help patients is to reduce information overload and help them focus on medical terms that matter most to them. Objective: The aim of this work was to develop FIT (Finding Important Terms for patients), an unsupervised natural language processing (NLP) system that ranks medical terms in EHR notes based on their importance to patients. Methods: We built FIT on a new unsupervised ensemble ranking model derived from the biased random walk algorithm to combine heterogeneous information resources for ranking candidate terms from each EHR note. Specifically, FIT integrates four single views for term importance: patient use of medical concepts, document-level term salience, word-occurrence based term relatedness, and topic coherence. It also incorporates partial information of term importance as conveyed by terms' unfamiliarity levels and semantic types. We evaluated FIT on 90 expert-annotated EHR notes and compared it with three benchmark unsupervised ensemble ranking methods. Results: FIT achieved 0.885 AUC-ROC for ranking candidate terms from EHR notes to identify important terms. When including term identification, the performance of FIT for identifying important terms from EHR notes was 0.813 AUC-ROC. It outperformed the three ensemble rankers for most metrics. Its performance is relatively insensitive to its parameter. Conclusions: FIT can automatically identify EHR terms important to patients and may help develop personalized interventions to improve quality of care. By using unsupervised learning as well as a robust and flexible framework for information fusion, FIT can be readily applied to other domains and applications.
Stratégies de communication du gouvernement pendant la crise de la COVID-19 : cas du ministère des Affaires étrangères du Maroc
Creators: name: Yousra Fennich
name: Abdellah AAJLY
name: Mohamed TAHROUCH
Publisher: name: Zenodo
Year: 2024

description: La gestion efficace de crise est devenue un enjeu majeur dans un monde marqué par l'instabilité et la mondialisation, permettant aux organisation la possibilité de les surmonter et de minimiser leur impact, tout en constituant une opportunité d'apprentissage pour mieux se préparer à l'avenir. Cependant, il est crucial de comprendre que, sans une communication efficace, les organisations peuvent aggraver la situation en favorisant la propagation de la panique et de l'incertitude et le manque de confiance avec les différentes parties prenantes.

La pandémie de COVID-19 a illustré de manière tangible l'importance cruciale de la communication dans la formation de la perception publique envers les actions gouvernementales. L'exemple du ministère marocain des Affaires étrangères pendant la pandémie met en évidence les défis complexes auxquels sont confrontés les gouvernements dans la gestion de crises internationales. En équilibrant transparence, diplomatie et réactivité dans la communication de crise, les gouvernements peuvent maintenir la précision de l'information, répondre efficacement aux préoccupations des parties prenantes et garantir la confiance, éléments cruciaux pour une gestion réussie de la crise.
Observational Evidence of Magnetic Reconnection for Brightenings and Transition Region Arcades in IRIS observations
Creators: name: Zhao, Jie
name: Schmieder, Brigitte
name: Li, Hui
name: Pariat, Etienne
name: Zhu, Xiaoshuai
name: Feng, Li
name: Grubecka, Michalina
Publisher: name: arXiv
Year: 2017
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: By using a new method of forced-field extrapolation, we study the emerging flux region AR 11850 observed by the Interface Region Imaging Spectrograph (IRIS) and Solar Dynamical Observatory (SDO). Our results suggest that the bright points (BPs) in this emerging region have responses in lines formed from the upper photosphere to the transition region, with a relatively similar morphology. They have an oscillation of several minutes according to the Atmospheric Imaging Assembly (AIA) data at 1600 and 1700 A . The ratio between the BP intensities measured in 1600 A and 1700 A filtergrams reveals that these BPs are heated differently. Our analysis of the Helioseismic and Magnetic Imager (HMI) vector magnetic field and the corresponding topology in AR11850 indicates that the BPs are located at the polarity inversion line (PIL) and most of them related with magnetic reconnection or cancelation. The heating of the BPs might be different due to different magnetic topology. We find that the heating due to the magnetic cancelation would be stronger than the case of bald patch reconnection. The plasma density rather than the magnetic field strength could play a dominant role in this process. Based on physical conditions in the lower atmosphere, our forced-field extrapolation shows consistent results between the bright arcades visible in slit-jaw image (SJI) 1400 A and the extrapolated field lines that pass through the bald patches. It provides a reliable observational evidence for testing the mechanism of magnetic reconnection for the BPs and arcades in emerging flux region, as proposed in simulation works.
Efficient methods for computing integrals in electronic structure calculations
Creators: name: Kohashi, Hisashi
name: Sugita, Kosuke
name: Sugihara, Masaaki
name: Hoshi, Takeo
Publisher: name: arXiv
Year: 2017
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Numerical Analysis (math.NA)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Efficient methods are proposed, for computing integrals appeaing in electronic structure calculations. The methods consist of two parts: the first part is to represent the integrals as contour integrals and the second one is to evaluate the contour integrals by the Clenshaw-Curtis quadrature. The efficiency of the proposed methods is demonstrated through numerical experiments.
description: 4 pages, 5 figures
title: Memoria anual 2023
Creators: name: Universidad Especializada de las Américas
Publisher: name: Universidad Especializada de las Américas
publisherIdentifier: https://ror.org/01z110311
publisherIdentifierScheme: ROR
Year: 2023
Subjects: classificationCode: 5.3
subject: FOS: Educational sciences

description: La UDELAS se consolida como una gran institución: transparente, eficiente y comprometida socialmente. En sus dimensiones académicas y científicas realiza su trayectoria en vías de consolidar los principios y estrategias fundamentales para el logro de la excelencia.
A facility for the analysis of the electronic structures of solids and their surfaces by synchrotron radiation photoelectron spectroscopy
Creators: name: Hoesch, M.
name: Kim, T. K.
name: Dudin, P.
name: Wang, H.
name: Scott, S.
name: Harris, P.
name: Patel, S.
name: Matthews, M.
name: Hawkins, D.
name: Alcock, S. G.
name: Richter, T.
name: Mudd, J. J.
name: Basham, M.
name: Pratt, L.
name: Leicester, P.
name: Longhi, E. C.
name: Tamai, A.
name: Baumberger, F.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: A synchrotron radiation beamline in the photon energy range of 18 - 240 eV and an electron spectroscopy end station have been constructed at the 3 GeV Diamond Light Source storage ring. The instrument features a variable polarisation undulator, a high resolution monochromator, a re-focussing system to form a beam spot of 50x50 micrometer^2 and an end station for angle-resolved photoelectron spectroscopy (ARPES) including a 6-degrees-of-freedom cryogenic sample manipulator. The beamline design and its performance allow for a highly productive and precise use of the ARPES technique at an energy resolution of 10 - 15 meV for fast k-space mapping studies with a photon flux up to 2 10^13 ph/sec and well below 3 meV for high resolution spectra.
description: 10 pages, 11 figures
Deformations, Moduli Stabilisation and Gauge Couplings at One-Loop
Creators: name: Honecker, Gabriele
name: Koltermann, Isabel
name: Staessens, Wieland
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate deformations of $\mathbb{Z}_2$ orbifold singularities on the toroidal orbifold $T^6/(\mathbb{Z}_2\times\mathbb{Z}_6)$ with discrete torsion in the framework of Type IIA orientifold model building with intersecting D6-branes wrapping special Lagrangian cycles. To this aim, we employ the hypersurface formalism developed previously for the orbifold $T^6/(\mathbb{Z}_2\times\mathbb{Z}_2)$ with discrete torsion and adapt it to the $\mathbb{Z}_2\times\mathbb{Z}_6\timesΩ\mathcal{R}$ point group by modding out the remaining $\mathbb{Z}_3$ subsymmetry and the orientifold projection $Ω\mathcal{R}$. We first study the local behaviour of the $\mathbb{Z}_3\timesΩ\mathcal{R}$ invariant deformation orbits under non-zero deformation and then develop methods to assess the deformation effects on the fractional three-cycle volumes globally. We confirm that D6-branes supporting USp(2N) or SO(2N) gauge groups do not constrain any deformation, while deformation parameters associated to cycles wrapped by D6-branes with U(N) gauge groups are constrained by D-term supersymmetry breaking. These features are exposed in global prototype MSSM, Left-Right symmetric and Pati-Salam models first constructed in arXiv:1509.00048 and arXiv:1409.1236, for which we here count the number of stabilised moduli and study flat directions changing the values of some gauge couplings. Finally, we confront the behaviour of tree-level gauge couplings under non-vanishing deformations along flat directions with the one-loop gauge threshold corrections at the orbifold point and discuss phenomenological implications, in particular on possible LARGE volume scenarios and the corresponding value of the string scale $M_{\text{string}}$, for the same global D6-brane models.
description: 1+84 pages, 16 figures, 32 tables
Summer Excursion
Creators: name: Baker, C
name: Baylay, A
name: Guilford, E
name: Fellows, G
name: Yearsley, R
Publisher: name: Archaeology Data Service
Year: 2023

description: Transactions of the Thoroton Society, 14, 1-23
description: Stanford-on-Soar church, Normanton-on-Soar church, West Leake church, Ratcliffe-on-Soar church and St Michael's chruch, Sutton Bonington.
Noteropagus obscurus d'Orchymont
Creators: name: Swezey, O. H.
Publisher: name: Zenodo
Year: 1942
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Hydrophilidae
Noteropagus
Noteropagus obscurus

description: 3.Noteropagus obscurus d'Orchymont, Soc. Ent. France, Ann. 88: 135, 1919. Knisch, Coleopt. Catalog. (79): 155, 1924. Ritidian Pt., April 16, Bryan, one specimen; Mt. Alifan, May 26, in papaya log, Usinger, one specimen; Yigo, Nov. 13, in rotten banana stem, Swezey, three specimens. A tiny black species, described from Borneo and Timor. One specimen retained by Buchanan, U. S. National Museum, and one specimen from Yigo at British Museum. Determined by J. Balfour-Browne.
description: Published as part of Swezey, O. H., 1942, Miscellaneous Families of Guam Coleoptera, pp. 150-171 in Insects of Guam I, Honolulu, Hawaii :Bernice P. Bishop Museum on page 162, DOI: 10.5281/zenodo.5167701
Optogenetic, voltammetric, and histochemical characterization of striatal tyrosine hydroxylase interneurons
Creators: name: Xenias, Harry S.
Publisher: name: No Publisher Supplied
Year: 2014

description: The traditional view of striatal dopamine originating from the midbrain remained unchallenged until a publication by Dubach et al. (1987) showed that in primates there are striatal interneurons immunoreactive for tyrosine hydroxylase (TH), the rate-limiting enzyme for catecholamine synthesis. It has generally been assumed in subsequent publications that striatal TH interneurons (THINs) are an intrinsic striatal source of dopamine (DA). The possibility that THINs could be DAergic has deep implications for both normal and pathological states, such as Parkinson’s disease. However, despite nearly three decades since the first report of striatal TH+ neurons, no direct evidence that THINs are DAergic or can compensate for the loss of nigrostriatal DA has been reported. To examine if THINs contain and release DA, two bacterial artificial chromosome (BAC) transgenic mouse lines were used that express either the Cre recombinase enzyme or the enhanced green fluorescent protein (EGFP) reporter. Both transgenes are under the control of the regulatory elements of TH and each respective mouse line is referred to as TH-Cre or EGFP-TH. Immunofluorescent cytochemistry revealed no colocalization of EGFP+ striatal cells with DA in TH-EGFP mice. Neither was there any colocalization of EGFP+ striatal cells with aromatic L-amino acid decarboxylase (AADC), the vesicular monoamine transporter-2 (VMAT2), or the dopamine transporter (DAT). Additionally, TH-Cre mice that were unilaterally lesioned by 6-OHDA in the midbrain were also bilaterally injected into the striatum with Cre-dependent recombinant adeno-associated virus (AAV), encoding the opsin protein channelrhodopsin-2 (ChR2) fused to the enhanced yellow fluorescent protein (EYFP) to transduce THINs to express ChR2. THINs were then light-activated by 2-5 ms blue light pulses during simultaneous fast-scan cyclic voltammetry (FSCV) and found to not release any detectable amounts of DA, even in the presence of nomifensine, a potent DA reuptake inhibitor. Lastly, it was found that THINs are powerfully modulated by DA and provide a widespread and powerful inhibition on SPNs. THINs then, despite containing TH, are not DAergic but a novel class of GABAergic interneuron that regulates the timing of the output responses of SPNs and add to the complexity of the striatal microcircuitry.
Anomala sulcatula Burmeister 1844
Creators: name: Swezey, O. H.
Publisher: name: Zenodo
Year: 1942
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Rutelidae
Anomala
Anomala sulcatula

description: 4.Anomala sulcatula Burmeister, Hanclb. Ent., 4 (1): 261, 1844. Schultze, Philip. Jour. Sci. 11, D: 172, 1916. Agana, April 19, 23, Bryan; Tarague, May 17, Swezey; Agat, May 21, on corn leaf, Swezey; Machanao, June 30, ex rotten breadfruit trunk, Swezey, Usinger; Piti, June 15, Usinger; Piti, June 12, 15, July 9, 12, 13, 19, Aug. 10, 27, Oct. 5, 6, Nov. 25, all at light, Swezey; Piti, Oct. 31, on bamboo, Swezey; Sumay, Nov. 28, about a dozen on screen door at Pan-American Airways mess hall, Swezey; grubs found at corn roots, a little north of Decledo, Nov. 25, Swezey. A Philippine species which is now quite common in Guam. It is nocturnal, yet may be found on its food plants in the daytime. The grubs do some damage to corn roots, and are also found in other situations. Most of our adults were collected as they came to light. Determined by F. X. Williams, Experiment Station, Hawaiian Sugar Planters' Association, Honolulu.
description: Published as part of Swezey, O. H., 1942, Miscellaneous Families of Guam Coleoptera, pp. 150-171 in Insects of Guam I, Honolulu, Hawaii :Bernice P. Bishop Museum on page 168, DOI: 10.5281/zenodo.5167701
Neural mechanisms of position perception
Creators: name: Wright, Jessica
Publisher: name: No Publisher Supplied
Year: 2014

description: Visual perception is a reconstruction of the physical visual aspects of the world and subject to various biases, assumptions and noise. One aspect of visual perception is visuospatial localization. Although visual localization is typically accurate, there are various situations where healthy human subjects mislocalize objects, as well as, neurological disorders that alter visual localization behavior. These situations result in differences between the perceived and actual position of an object. These perceptual errors are useful to explore the limitations of visuospatial object localization and provide information on the underlying neural mechanisms of position perception. In particular, the following studies investigated how the brain integrates visual information across a spatially extended stimulus and ultimately results in a final percept of position. This project utilized behavioral and fMRI studies combined with transcranial direct current stimulation (tDCS) in healthy human subjects. These methods allowed us to quantify behavioral errors in localization and examine changes in the BOLD signal (as an indirect measure of changes in neural activity) in potential neural correlates of position perception. In Aim 1 we show that factors such as retinal eccentricity and attentional cues bias localization behavior via alterations of the contribution of specific object components in the integration process. Aim 2 shows that tDCS over posterior parietal cortex (PPC) yields mislocalizations that are consistent with predictions from the interhemispheric competition theory (ICT) of attention. This supports the causal role of PPC in visual spatial localization. Aim 3 extends the results from Aim 2 to show that the BOLD signal changes in PPC predict localization behavior. In addition to novel insights related to position perception, these experiments provide insight into the effects of tDCS on behavior and the interaction of tDCS with the BOLD signal. This work begins to answer how different factors influence position perception and the role of different cortical regions in position perception. This research also has implications for rehabilitation programs for patients with various visual neurological disorders that alter spatial perception.
Axial U(1) current in Grabowska and Kaplan's formulation
Creators: name: Hamada, Yu
name: Kawai, Hikaru
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Recently, Grabowska and Kaplan suggested a non-perturbative formulation of a chiral gauge theory, which consists of the conventional domain-wall fermion and a gauge field that evolves by the gradient flow from one domain wall to the other. In this paper, we discuss the U(1) axial-vector current in 4 dimensions using this formulation. We introduce two sets of domain-wall fermions belonging to complex conjugate representations so that the effective theory is a 4-dimensional vector-like gauge theory. Then, as a natural definition of the axial-vector current, we consider a current that generates the simultaneous phase transformations for the massless modes in 4 dimensions. However, this current is exactly conserved and does not reproduce the correct anomaly. In order to investigate this point precisely, we consider the mechanism of the conservation. We find that this current includes not only the axial current on the domain wall but also a contribution from the bulk, which is non-local in the sense of 4-dimensional fields. Therefore, the local current is obtained by subtracting the bulk contribution from it.
description: 25 pages, 1 figure
Interactive Tutorials in Undergraduate Mathematics: What Are They Good For?
Creators: name: Kim, Sang Hyun
name: Evans, Tanya
Publisher: name: The University of Auckland
Year: 2023
Subjects: classificationCode: 520102
subject: Educational psychology
classificationCode: 390303
subject: Higher education

description: Proceedings of the 25th Annual Conference on Research in Undergraduate Mathematics Education (February 23 – February 25, 2023)
Hippocampal neural firing dynamics during sleep
Creators: name: Grosmark, Andres D.
Publisher: name: No Publisher Supplied
Year: 2014

description: The focus of my thesis was the assessment of the presence and dynamics of non-specific, putatively homeostatic, as well as specific memory-related, modifications in the structure of hippocampal firing patterns during sleep. As a step toward understanding sleep function, I developed an appropriate, open-source Matlab-based application for the visualization, annotation and detailed sleep scoring of long-time scale electrophysiological data relevant to brain state dynamics. In my study of putatively homeostatic changes in excitability I found that the overall firing rates of hippocampal CA1 neurons decreased across sleep concurrent with an increased recruitment of neuronal spiking to brief ‘ripple’ episodes, resulting in a net increase in neural synchrony. Unexpectedly, within non-REM episodes overall firing rates were found to gradually increase together with a decrease in recruitment of spiking to ripples. The rate increase within non-REM rate episodes was counteracted by a larger rapid decrease of discharge frequency during the interleaving REM episodes. Both the decreasing firing rates and the increasing synchrony during the course of sleep were correlated with the power of theta activity during REM episodes. These findings suggest a prominent role of REM sleep in sleep-related neuronal plasticity. Lastly, in order to gauge the interaction between non-specific and memory-specific contributions to sleep-related firing dynamics, I recorded hours of sleep in rats before and after exposure to a completely novel maze environment. While both replay and 'pre-play' were observed, both were found to be dominated by non-local (different silicon-probe shank) interactions. However, while replay was observed in both pair-wise and higher-order interactions, pre-play was surprisingly specifically restricted to higher-order sequential interactions. This analysis also included the assessment of several traditional as well as novel methods for measuring replay, leading to significant methodological insights into their sensitivity to the established non-stationary nature of excitability in sleep, and to several suggestions for future work.
Fermion localization mechanism with derivative geometrical coupling on branes
Creators: name: Li, Yan-Yan
name: Zhang, Yu-Peng
name: Guo, Wen-Di
name: Liu, Yu-Xiao
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In order to localize fermions on branes with codimension one, one usually introduces the Yukawa coupling between fermions and background scalar fields or the recently proposed derivative fermion-scalar coupling in [Phys. Rev. D 89 (2014) 086001]. In this paper, we explore the coupling between a spinor field $Ψ$ and the scalar curvature of spacetime $R$, $ηΨΓ^M\partial_M F(R)γ^5\barΨ$ with $F(R)$ a function of $R$, to investigate localization of the fermion. Because of $Z_2$ symmetry of the extra dimension, the new coupling mechanism proposed here can easily deal with the problem encountered in the Yukawa coupling with even background scalar fields. More importantly, the new mechanism will also work for the branes without background scalar fields. By investigating three examples, we find that fermions can be localized on the branes with the new mechanism.
description: v2: 27 pages, 11 figures, two references added
Dihammus marianarum
Creators: name: Swezey, O. H.
Publisher: name: Zenodo
Year: 1942
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Dihammus
Dihammus marianarum

description: 1.Dihammus marianarum (Aurivillius). Monochamus (Haplohammus) Marianarum Aurivillius, Deutsche Ent. Zeitschrift, 216, 1908. Dihammus Marianarwm (Aurivillius) Coleopt. Catalog. (73): 98, 1922. Agfayan, March 28, Bryan; Orote Pen., April 9, Bryan; Merizo, April 24, Bryan; Upi Trail, May 5, Usinger; Machanao, June 2, Swezey; Piti, May 2, on Pithecolobium, Usinger; Dededo, May 11, Usinger; Talofofo, June 11, Usinger; Barrigada, June 12, on Citrus, June 14, on Ficus, June 24, Usinger; Dededo, Sept. 7, reared from Hibiscus tiliaceits, Swezey; Piti, Sept. 22, Oct. 3, Swezey; Yigo, Oct. 18, reared from dead Firns, Swezey; Piti, Nov. 16, at light, Swezey. This is the largest cerambycid in Guam. It was previously collected by Fullaway in 1911, and determined by Schultze as Dihammus fistulator Germar, a species having a wide range from Malay Peninsula and the Philippines to Australia and Samoa. The specimens identified by Schultze, however, have the lateral shining bare spots of the abdomen, the same as our 1936 specimens, which is a character by which Aurivillius distinguishes marianarum from other closely related species. The work of the larvae of this beetle is very conspicuous in dead bran(;hes of the breadfruit tree. It also works similarly in Pithecolobium, Ficus, and Hibisrns tiliaceus, and any felled tree. Before getting too old and dried up, the leftover tree tops where logs had been cut were especially likely to have larvae working in them. At Yigo, November 13, larvae were found in living cacao trees. When working in or beneath the inner bark, they had a tendency to go spirally around a branch, which either crippled or killed it. One larva retained for rearing by A. I. Cruz matured February 19, 1937.
description: Published as part of Swezey, O. H., 1942, Miscellaneous Families of Guam Coleoptera, pp. 150-171 in Insects of Guam I, Honolulu, Hawaii :Bernice P. Bishop Museum on page 169, DOI: 10.5281/zenodo.5167701
Existence and Stability of Four-Vortex Collinear Relative Equilibria with Three Equal Vorticities
Creators: name: Menezes, Brian
name: Roberts, Gareth E.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Dynamical Systems (math.DS)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 70F10, 70F15, 70H14, 37J25, 34D20

description: We study collinear relative equilibria of the planar four-vortex problem where three of the four vortex strengths are identical. The $S_3$ invariance obtained from the equality of vorticities is used to reduce the defining equations and organize the solutions into two distinct groups based on the ordering of the vortices along the line. The number and type of solutions are given, along with a discussion of the bifurcations that occur. The linear stability of all solutions is investigated rigorously and stable solutions are found to exist for cases where the vorticities have mixed signs. We employ a combination of analysis and computational algebraic geometry to prove our results.
description: 28 pages, 8 figures
Fermion propagator in an external potential and generalized Airy functions
Creators: name: Britto, A. L. M.
name: Das, Ashok K.
name: Frenkel, J.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We study the behavior of the fermion propagator in an external time dependent potential in 0+1 dimension. We show that, when the potential has upto quadratic terms in time, the propagator can be expressed in terms of generalized Airy functions (or standard Airy functions depending on the exact time dependence). We study various properties of these new generalized functions which reduce to the standard Airy functions in a particular limit.
description: 9 pages, 3 figures
First- and Second-Order Hypothesis Testing for Mixed Memoryless Sources with General Mixture
Creators: name: Han, Te Sun
name: Nomura, Ryo
Publisher: name: arXiv
Year: 2017
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: The first- and second-order optimum achievable exponents in the simple hypothesis testing problem are investigated. The optimum achievable exponent for type II error probability, under the constraint that the type I error probability is allowed asymptotically up to epsilon, is called the epsilon-optimum exponent. In this paper, we first give the second-order epsilon-exponent in the case where the null hypothesis and the alternative hypothesis are a mixed memoryless source and a stationary memoryless source, respectively. We next generalize this setting to the case where the alternative hypothesis is also a mixed memoryless source. We address the first-order epsilon-optimum exponent in this setting. In addition, an extension of our results to more general setting such as the hypothesis testing with mixed general source and the relationship with the general compound hypothesis testing problem are also discussed.
description: 23 pages
HARPO: 1.7 - 74 MeV gamma-ray beam validation of a high angular resolutio n, high linear polarisation dilution, gas time projection chamber telescope and polarimeter
Creators: name: Bernard, Denis
Publisher: name: arXiv
Year: 2017
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: A presentation at the SciNeGHE conference of the past achievements, of the present activities and of the perspectives for the future of the HARPO project, the development of a time projection chamber as a high-performance gamma-ray telescope and linear polarimeter in the e+e- pair creation regime.
description: Presented at SciNeGHE 2016 "11th Workshop on Science with the New generation of High Energy Gamma-ray Experiments : High-energy gamma-ray experiments at the dawn of gravitational wave astronomy" 18-21 October 2016, Pisa, Italy. Proceedings to be submitted to Il Nuovo Cimento
Extricating New Physics Scenarios at DUNE with High Energy Beams
Creators: name: Masud, Mehedi
name: Bishai, Mary
name: Mehta, Poonam
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The proposed Deep Underground Neutrino Experiment (DUNE) utilizes a wide-band on-axis tunable muon-(anti)neutrino beam with a baseline of 1300 km to search for CP violation with high precision. Given the long baseline, DUNE is also sensitive to effects due to non-standard neutrino interactions (NSI) which can interfere with the standard 3-flavor oscillation paradigm. In this Letter, we exploit the tunability of the DUNE neutrino beam over a wide-range of energies and utilize a new theoretical metric to devise an experimental strategy for separating oscillation effects due to NSI from the standard 3-flavor oscillation scenario. Using our metric, we obtain an optimal combination of beam tunes and distribution of run times in neutrino and anti-neutrino modes that would enable DUNE to isolate new physics scenarios from the standard. To the best of our knowledge, our strategy is entirely new and has not been reported elsewhere.
description: 4 pages, 5 figures, comments welcome
Modelling polarized light from dust shells surrounding asymptotic giant branch stars
Creators: name: Aronson, Erik
name: Bladh, Sara
name: Höfner, Susanne
Publisher: name: arXiv
Year: 2017
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Winds of asymptotic giant branch (AGB) stars are commonly assumed to be driven by radiative acceleration of dust grains. For M-type AGB stars, the nature of the wind-driving dust species has been a matter of intense debate. A proposed source of the radiation pressure triggering the outflows is photon scattering on Fe-free silicate grains. This wind-driving mechanism requires grain radii of about 0.1 - 1 micron in order to make the dust particles efficient at scattering radiation around the stellar flux maximum. Grain size is therefore an important parameter for understanding the physics behind the winds of M-type AGB stars. We seek to investigate the diagnostic potential of scattered polarized light for determining dust grain sizes. We have developed a new tool for computing synthetic images of scattered light in dust and gas shells around AGB stars, which can be applied to detailed models of dynamical atmospheres and dust-driven winds. We present maps of polarized light using dynamical models computed with the DARWIN code. The synthetic images clearly show that the intensity of the polarized light, the position of the inner edge of the dust shell, and the size of the dust grains near the inner edge are all changing with the luminosity phase. Non-spherical structures in the dust shells can also have an impact on the polarized light. We simulate this effect by combining different pulsation phases into a single 3D structure before computing synthetic images. An asymmetry of the circumstellar envelope can create a net polarization, which can be used as diagnostics for the grain size. The ratio between the size of the scattering particles and the observed wavelength determines at what wavelengths net polarization switches direction. If observed, this can be used to constrain average particle sizes.
description: 9 pages
Adhesion Properties of Hydrogen on Sb(111) Probed by Helium Atom Scattering
Creators: name: Kraus, Patrick
name: Gösweiner, Christian
name: Tamtögl, Anton
name: Apolloner, Florian
name: Ernst, Wolfgang E.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We have carried out a series of helium atom scattering measurements in order to characterise the adsorption properties of hydrogen on antimony(111). Molecular hydrogen does not adsorb at temperatures above 110 K in contrast to pre-dissociated atomic hydrogen. Depending on the substrate temperature, two different adlayer phases of atomic hydrogen on Sb(111) occur. At low substrate temperatures ($110~$K), the deposited hydrogen layer does not show any ordering while we observe a perfectly ordered $(1\times 1)$ H/Sb(111) structure for deposition at room temperature. Furthermore, the amorphous hydrogen layer deposited at low temperature forms an ordered overlayer upon heating the crystal to room temperature. Hydrogen starts to desorb at $T_m = 430~$K which corresponds to a desorption energy of $E_{des}=(1.33\pm0.06)~$eV. Using measurements of the helium reflectivity during hydrogen exposure at different surface temperatures, we conclude that the initial sticking coefficient of atomic hydrogen on Sb(111) decreases with increasing surface temperature. Furthermore, the scattering cross section for the diffuse scattering of helium from hydrogen on Sb(111) is determined as $Σ= (12 \pm 1)~\mboxÅ^{2}$.
description: 7 pages, 5 figures
Gamma-ray and Optical Oscillations of 0716+714, MRK 421, and BL Lac
Creators: name: Sandrinelli, A.
name: Covino, S.
name: Treves, A.
name: Lindfors, E.
name: Raiteri, C. M.
name: Nilsson, K.
name: Takalo, L. O.
name: Reinthal, R.
name: Berdyugin, A.
name: Ramazani, V. Fallah
name: Kadenius, V.
name: Tuominen, T.
name: Kehusmaa, P.
name: Bachev, R.
name: Strigachev, A.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We examine the 2008-2016 $γ$-ray and optical light curves of three bright BL Lac objects, 0716+714, MRK 421, BL Lac, which exhibit large structured variability. We searched for periodicities by using a fully Bayesian approach. For two out of three sources investigated no significant periodic variability was found. In the case of BL Lac we detected a periodicity of ~ 680 days. Although the signal related to this is modest, the coincidence of the periods in both gamma and optical bands is indicative of a physical relevance. Considering previous literature results, possibly related $γ$-ray and optical periodicities of about one year time scale are proposed in 4 bright $γ$-ray blazars out of the 10 examined in detail. Comparing with results from periodicity search of optical archives of quasars, the presence of quasi-periodicities in blazars might be more frequent by a large factor. This suggests the intriguing possibility that the basic conditions for their observability are related to the relativistic jet in the observer direction, but the overall picture remains uncertain.
description: 7 pages, 8 figure; minor language corrections included. Accepted for publication in Astronomy and Astrophysics
Distinguishing Boson Stars from Black Holes and Neutron Stars from Tidal Interactions in Inspiraling Binary Systems
Creators: name: Sennett, Noah
name: Hinderer, Tanja
name: Steinhoff, Jan
name: Buonanno, Alessandra
name: Ossokine, Serguei
Publisher: name: arXiv
Year: 2017
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Binary systems containing boson stars---self-gravitating configurations of a complex scalar field--- can potentially mimic black holes or neutron stars as gravitational-wave sources. We investigate the extent to which tidal effects in the gravitational-wave signal can be used to discriminate between these standard sources and boson stars. We consider spherically symmetric boson stars within two classes of scalar self-interactions: an effective-field-theoretically motivated quartic potential and a solitonic potential constructed to produce very compact stars. We compute the tidal deformability parameter characterizing the dominant tidal imprint in the gravitational-wave signals for a large span of the parameter space of each boson star model. We find that the tidal deformability for boson stars with a quartic self-interaction is bounded below by $Λ_{\rm min}\approx 280$ and for those with a solitonic interaction by $Λ_{\rm min}\approx 1.3$. Employing a Fisher matrix analysis, we estimate the precision with which Advanced LIGO and third-generation detectors can measure these tidal parameters using the inspiral portion of the signal. We discuss a new strategy to improve the distinguishability between black holes/neutrons stars and boson stars by combining deformability measurements of each compact object in a binary system, thereby eliminating the scaling ambiguities in each boson star model. Our analysis shows that current-generation detectors can potentially distinguish boson stars with quartic potentials from black holes, as well as from neutron-star binaries if they have either a large total mass or a large mass ratio. Discriminating solitonic boson stars from black holes using only tidal effects during the inspiral will be difficult with Advanced LIGO, but third-generation detectors should be able to distinguish between binary black holes and these binary boson stars.
description: 18 pages, 8 figures. Submitted to Physical Review D
Unexpected structural and magnetic depth dependence of YIG thin films
Creators: name: Cooper, J. F. K.
name: Kinane, C. J.
name: Langridge, S.
name: Ali, M.
name: Hickey, B. J.
name: Niizeki, T.
name: Uchida, K.
name: Saitoh, E.
name: Ambaye, H.
name: Glavic, A.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report measurements on yttrium iron garnet (YIG) thin films grown on both gadolinium gallium garnet (GGG) and yttrium aluminium garnet (YAG) substrates, with and without thin Pt top layers. We provide three principal results: the observation of an interfacial region at the Pt/YIG interface, we place a limit on the induced magnetism of the Pt layer and confirm the existence of an interfacial layer at the GGG/YIG interface. Polarised neutron reflectometry (PNR) was used to give depth dependence of both the structure and magnetism of these structures. We find that a thin film of YIG on GGG is best described by three distinct layers: an interfacial layer near the GGG, around 5 nm thick and non-magnetic, a magnetic bulk phase, and a non-magnetic and compositionally distinct thin layer near the surface. We theorise that the bottom layer, which is independent of the film thickness, is caused by Gd diffusion. The top layer is likely to be extremely important in inverse spin Hall effect measurements, and is most likely Y2O3 or very similar. Magnetic sensitivity in the PNR to any induced moment in the Pt is increased by the existence of the Y2O3 layer; any moment is found to be less than 0.02 uB/atom.
description: 10 pages, 4 figures
Temperature dependence of the surface plasmon resonance in small electron gas fragments, self consistent field approximation
Creators: name: Fasolato, Claudia
name: Sacchetti, Francesco
name: Tozzi, Pietro
name: Petrillo, Caterina
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences
subject: J.2

description: The temperature dependence of the surface plasmon resonance in small metal spheres is calculated using an electron gas model within the Random Phase Approximation. The calculation is mainly devoted to the study of spheres with diameters up to at least 10 nm, where quantum effects can still be relevant and simple plasmon pole approximation for the dielectric function is no more appropriate. We find a possible blue shift of the plasmon resonance position when the temperature is increased while keeping the size of the sphere fixed. The blue shift is appreciable only when the temperature is a large fraction of the Fermi energy. These results provide a guide for pump and probe experiments with a high time resolution, and tailored to study the excited electron system before thermalisation with the lattice takes place.
description: 5 pages, 3 figures
Luminous Efficiency Estimates of Meteors -I. Uncertainty analysis
Creators: name: Subasinghe, Dilini
name: Campbell-Brown, Margaret
name: Stokan, Edward
Publisher: name: arXiv
Year: 2017
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The luminous efficiency of meteors is poorly known, but critical for determining the meteoroid mass. We present an uncertainty analysis of the luminous efficiency as determined by the classical ablation equations, and suggest a possible method for determining the luminous efficiency of real meteor events. We find that a two-term exponential fit to simulated lag data is able to reproduce simulated luminous efficiencies reasonably well.
description: Accepted Dec 20, 2016 to Planetary and Space Science
Equality Perfect Graphs and Digraphs
Creators: name: Andres, Stephan Dominique
Publisher: name: Contributions to Discrete Mathematics
Year: 2020

description: In the graph colouring game introduced by Bodlaender [7], two players, Alice and Bob, alternately colour uncoloured vertices of a given graph $G$ with one of $k$ colours so that adjacent vertices receive different colours. Alice wins if every vertex is coloured at the end. The game chromatic number of $G$ is the smallest $k$ such that Alice has a winning strategy. In Bodlaender's original game, Alice begins. We also consider variants of this game where Bob begins or skipping turns is allowed [1] and their generalizations to digraphs [2]. By means of forbidden induced subgraphs (resp.\ forbidden induced subdigraphs), for several pairs $(g_1,g_2)$ of such graph (resp.\ digraph) colouring games $g_1$ and~$g_2$, which define game chromatic numbers $\chi_{g_1}$ and~$\chi_{g_2}$, we characterise the classes of graphs (resp.\ digraphs) such that, for any induced subgraph (resp.\ subdigraph)~$H$, the game chromatic numbers $\chi_{g_1}(H)$ and $\chi_{g_2}(H)$ of~$H$ are equal.
description: Contributions to Discrete Mathematics, Vol. 15 No. 2 (2020)
[Halle (Saale), Universitäts- und Landesbibliothek Sachsen-Anhalt, Morbio 4 (19 b)]
Creators: name: Amadeus
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 1303
Subjects: subject: Sonstige weltliche Aussteller
subject: Notarsurkunde
subject: Urkunde
subject: 090

description: Die Söhne des Guielmus und Erben des verstorbenen Guielmus aus Casaleggio Novara, Patroni und Adoucati der Kirche St. Viti de Moxitio im Bistum Novara, stellen dem Amadeus de Mantua, Canonicus und Vicarius generalis des Bischofs Bartholomaeus Quirini von Novara, den Paullus Spaldus als Pfründner der Kirche St. Iorgii in Vicolungo in Biandrate vor.
[Halle (Saale), Universitäts- und Landesbibliothek Sachsen-Anhalt, Morbio 4 (20 b)]
Creators: name: Maserius Ponzonus
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 1308
Subjects: subject: Sonstige geistliche Aussteller
subject: Urkunde
subject: 090

description: Der Archipresbyter Maserius Ponzonus und weitere genannte Personen des Domkapitels von Cremona beschweren sich über die Zusammensetzung des Gremiums und die stattgefundene Ernennung von Syndici und Procuratores durch das Domkapitel und setzen Johannes de Cauata und weitere genannte Personen in diese Funktionen ein.
[Halle (Saale), Universitäts- und Landesbibliothek Sachsen-Anhalt, Morbio 4 (15)]
Creators: name: (:Unkn) Unknown
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 1303
Subjects: subject: Sonstige weltliche Aussteller
subject: Notarsurkunde
subject: Urkunde
subject: 090

description: In einem Rechtsstreit zwischen Julianus de Marcinis, Iudex in Soncino, auf der einen und Vitallus de Abizis, Curator der Sarasina, ihrerseits Tochter des verstorbenen Guiscadus, und weiterer genannter Personen, auf der anderen Seite wird entschieden, ob das in den Unterlagen der Comunis eingetragene Urteil als gültig anzusehen ist oder nicht.