cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
High-Resolution Ultraviolet Spectra of the Dwarf Seyfert 1 Galaxy NGC 4395: Evidence for Intrinsic Absorption
Creators: name: Crenshaw, D. M.
name: Kraemer, S. B.
name: Gabel, J. R.
name: Schmitt, H. R.
name: Filippenko, A. V.
name: Ho, L. C.
name: Shields, J. C.
name: Turner, T. J.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present ultraviolet spectra of the dwarf Seyfert 1 nucleus of NGC 4395, obtained with the Far Ultraviolet Spectroscopic Explorer (FUSE) and the Hubble Space Telescope's Space Telescope Imaging Spectrograph at velocity resolutions of 7 to 15 km/sec. We confirm our earlier claim of C IV absorption in low-resolution UV spectra and detect a number of other absorption lines with lower ionization potentials. In addition to the Galactic lines, we identify two kinematic components of absorption that are likely to be intrinsic to NGC 4395. We consider possible origins of the absorption, including the interstellar medium (ISM) of NGC 4395, the narrow-line region (NLR), outflowing UV absorbers, and X-ray ``warm absorbers.'' Component 1, at a radial velocity of -770 km/sec with respect to the nucleus, is only identified in the C IV 1548.2 line. It most likely represents an outflowing UV absorber, similar to those seen in a majority of Seyfert 1 galaxies, although additional observations are needed to confirm the reality of this feature. Component 2, at -114 km/sec, most likely arises in the ISM of NGC 4395; its ionic column densities cannot be matched by photoionization models with a power-law continuum. Our models of the highly ionized X-ray absorbers claimed for this active galactic nucleus indicate that they would have undetectable C IV absorption, but large O VI and H I columns should be present. We attribute our lack of detection of the O VI and Ly-beta absorption from the X-ray absorbers to a combination of noise and dilution of the nuclear spectrum by hot stars in the large FUSE aperture.
description: 22 pages, 3 figures (2 in color), accepted for ApJ
Phenomenological Aspects of Heterotic Orbifold Models at One Loop
Creators: name: Binetruy, Pierre
name: Birkedal-Hansen, Andreas
name: Mambrini, Yann
name: Nelson, Brent D.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We provide a detailed study of the phenomenology of orbifold compactifications of the heterotic string within the context of supergravity effective theories. Our investigation focuses on those models where the soft Lagrangian is dominated by loop contributions to the various soft supersymmetry breaking parameters. Such models typically predict non-universal soft masses and are thus significantly different from minimal supergravity and other universal models. We consider the pattern of masses that are governed by these soft terms and investigate the implications of certain indirect constraints on supersymmetric models, such as flavor-changing neutral currents, the anomalous magnetic moment of the muon and the density of thermal relic neutralinos. These string-motivated models show novel behavior that interpolates between the phenomenology of unified supergravity models and models dominated by the superconformal anomaly.
description: 47 pages, 14 figures
Inflation and Kahler Stabilization of the Dilaton
Creators: name: Skinner, David
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The problems of attempting inflationary model-building in a theory containing a dilaton are explained. In particular, I study the shape of the dilaton potential today and during inflation, based on a weakly-coupled heterotic string model where corrections to the Kahler potential are assumed to be responsible for dilaton stabilization. Although no specific model-building is attempted, if the inflationary energy density is related to the scale of gaugino condensation, then the dilaton may be stabilized close enough to today's value that there is no significant change in the GUT scale coupling. This can occur in a very wide range of models, and helps to provide some justification for the standard predictions of the spectral index. I explain how this result can ultimately be traced to the supersymmetry structure of the theory.
description: 12 pages, submitted to PRD
Reply to: ``Comment on `Polynomial-Time Simulation of Pairing Models on a Quantum Computer'''
Creators: name: Wu, L. -A.
name: Byrd, M. S.
name: Lidar, D. A.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Quantum Physics (quant-ph)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We reply to Dukelsky, et al. regarding the article: L. A. Wu, M. S. Byrd and D. A. Lidar, Phys. Rev. Lett. 89, 057904 (2002).
description: 1 page reply
Spin-spin correlators in Majorana representation
Creators: name: Shnirman, Alexander
name: Makhlin, Yuriy
Publisher: name: arXiv
Year: 2003
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In the Majorana representation of a spin 1/2 we find an identity which relates spin-spin correlators to one-particle fermionic correlators. This should be contrasted with the straightforward approach in which two-particle (four-fermion) correlators need to be calculated. We discuss applications to the analysis of the dynamics of a spin coupled to a dissipative environment and of a quantum detector performing a continuous measurement of a qubit's state.
The fate of Kondo resonances in certain Kondo lattices: a ``poor woman's'' scaling analysis
Creators: name: Pepin, Catherine
Publisher: name: arXiv
Year: 2004
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present an effective field theory for the Kondo lattice, which can exhibit, in a certain range of parameters, a non Fermi liquid paramagnetic phase at the brink of a zero temperature Anti Ferromagnetic (AF) transition. The model is derived in a natural way from the bosonic Kondo-Heisenberg model, in which the Kondo resonances are treated as true (but damped) Grassmann fields. One loop Renormalization Group (RG) treatment of this model gives a phase diagram for the Kondo lattice as a function of $ J_K $ where, for $ J_K< J_c$ the system shows AF order, for $J_K> J_1$ one has the heavy electron phase and for $ J_c < J_K < J_1$ the formation of the Kondo singlets is incomplete, leading to the breakdown of the Landau Fermi liquid theory.
description: 5 pages, 3 figures
Systematics of the Neotropical butterfly genus Paryphthimoides Forster, 1964 (Lepidoptera: Nymphalidae: Satyrinae), with descriptions of seven new taxa
Creators: name: Zacca, Thamara
name: Casagrande, Mirna M.
name: Mielke, Olaf H. H.
name: Huertas, Blanca
name: Barbosa, Eduardo P.
name: Freitas, André V. L.
name: Lamas, Gerardo
name: Espeland, Marianne
name: Brévignon, Christian
name: Nakahara, Shinichi
name: Checa, Maria F.
name: Willmott, Keith R.
Publisher: name: Brill Online
Year: 2020
Subjects: subject: 60399 Evolutionary Biology not elsewhere classified
subject: FOS: Biological sciences

description: A systematic revision of Paryphthimoides, a satyrine genus widely distributed in South America, is presented based on an integrative approach. Molecular phylogeny inferred using multiple methods with nuclear (GAPDH, RpS5) and mitochondrial (COI) genes indicates that Paryphthimoides, as currently circumscribed, is polyphyletic. A new taxonomic arrangement is proposed reflecting the monophyly based on molecular and morphological evidence. Paryphthimoides now comprises 14 taxa, namely: P. poltys poltys (Prittwitz, 1865), P. poltys numilia (C. Felder & R. Felder, 1867) stat. nov., P. vestigiata (Butler, 1867), P. fridae Zacca, Casagrande, Huertas & Nakahara sp. nov., P. jorupe Zacca, Casagrande, Checa & Willmott sp. nov., P. terrestris terrestris (Butler, 1867) comb. nov., P. terrestris muyrakytan Zacca, Casagrande & Mielke ssp. nov., P. terrestris araguaianus Zacca, Casagrande & Mielke ssp. nov., P. terrestris grevei Zacca, Casagrande & Mielke ssp. nov., P. touloulou (Benmesbah, 2015) comb. nov., P. brixius brixius (Godart, [1824]) comb. nov., P. brixius madre Zacca, Mielke, Casagrande & Lamas ssp. nov., P. brixius rouranensis Brévignon ssp. nov. and P. flavofascia (Zacca & Siewert, 2014) comb. nov. Euptychia zeredatha Butler, 1869 and P. bahneri Anken, 1994 are new synonyms of P. p. poltys, and Euptychia binalinea Butler, 1867 and E. poltys bahiana Bryk, 1953 are new synonyms of P. poltys numilia. Lectotypes are designated for Euptychia zeredatha, Neonympha numilia, Euptychia vestigiata, Euptychia terrestris and Euptychia brixiola, Butler, 1867 and a neotype is designated for Satyrus brixius. In addition, female morphology is described for the first time for all available species, and biological data and distributional maps are provided for all species. Last instar and pupae of Paryphthimoides p. poltys is also described.
Are Inner Disc Misalignments Common? ALMA Reveals an Isotropic Outer Disc Inclination Distribution for Young Dipper Stars
Creators: name: Ansdell, M.
name: Gaidos, E.
name: Hedges, C.
name: Tazzari, M.
name: Kraus, A. L.
name: Wyatt, M. C.
name: Kennedy, G. M.
name: Williams, J. P.
name: Mann, A. W.
name: Angelo, I.
name: Duchene, G.
name: Mamajek, E. E.
name: Carpenter, J.
name: Esplin, T. L.
name: Rizzuto, A. C.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Dippers are a common class of young variable star exhibiting day-long dimmings with depths of up to several tens of percent. A standard explanation is that dippers host nearly edge-on (70 deg) protoplanetary discs that allow close-in (< 1 au) dust lifted slightly out of the midplane to partially occult the star. The identification of a face-on dipper disc and growing evidence of inner disc misalignments brings this scenario into question. Thus we uniformly (re)derive the inclinations of 24 dipper discs resolved with (sub-)mm interferometry from ALMA. We find that dipper disc inclinations are consistent with an isotropic distribution over 0-75 deg, above which the occurrence rate declines (likely an observational selection effect due to optically thick disc midplanes blocking their host stars). These findings indicate that the dipper phenomenon is unrelated to the outer (>10 au) disc resolved by ALMA and that inner disc misalignments may be common during the protoplanetary phase. More than one mechanism may contribute to the dipper phenomenon, including accretion-driven warps and "broken" discs caused by inclined (sub-)stellar or planetary companions.
description: Accepted to MNRAS (19 pages, 7 figures, 2 tables)
Folsomides parvulus Stach 1922
Creators: name: Thibaud, Jean-Marc
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Collembola
Entomobryomorpha
Isotomidae
Folsomides
Folsomides parvulus

description: Folsomides parvulus Stach, 1922
 Folsomides parvulus Stach, 1922: 17.
MATÉRIEL ÉTUDIÉ. — Raména: 3 ex. 20.III.2007; 1 ex. 1.VI.2009; 2 ex. 26.V.2010. Vohémar: 1 ex. 5.VI.2011. Île Sainte-Marie: 1 ex. 25.III.2006. Manakara: 1 ex. 26.VI.2007 (MNHN).
DISTRIBUTION. — Espèce cosmopolite, très commune sous les tropiques, présente aussi à Madagascar (Thibaud 2008a) et à Maurice (Thibaud 2008b).
ÉCOLOGIE. — Espèce hémiédaphique-guanophile et psammophile. Espèce assez rare, présente dans 4 localités sur 12 de la côte est de Madagascar. Absente dans nos prélèvements sur deux ans à Antalaha.
description: Published as part of Thibaud, Jean-Marc, 2015, Étude des collemboles des sables littoraux de la côte est de Madagascar (interstitiels terrestres), pp. 351-362 in Zoosystema 37 (2) on page 357, DOI: 10.5252/z2015n2a4, http://zenodo.org/record/5156014
Tests of Lorentz invariance using hydrogen molecules
Creators: name: Mueller, Holger
name: Herrmann, Sven
name: Saenz, Alejandro
name: Peters, Achim
name: Laemmerzahl, Claus
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss the consequences of Lorentz violation (as expressed within the Lorentz-violating extension of the standard model) for the hydrogen molecule, which represents a generic model of a molecular binding. Lorentz-violating shifts of electronic, vibrational and rotational energy levels, and of the internuclear distance are calculated. This offers the possibility of obtaining improved bounds on Lorentz invariance by experiments using molecules.
description: Expanded version containing a detailed discussion of possible experiments. 9 pages revtex, one figure
Quantum Vortex Theory PT2 + Harmonic Time (Draft/Revisions)
Creators: name: King Tut
Publisher: name: Zenodo
Year: 2024
Subjects: subject: Quantum field theory
subject: Quantum physics
subject: Metaphysics

description: This paper, titled Quantum Vortex Pt. 2 – Math Ideas and Harmonic Time, explores the concept of harmonic time within Quantum Vortex Theory. It builds on existing models of probability vortices, suggesting that time is oscillatory rather than linear, influenced by quantum field interactions. By introducing mathematical models of harmonic time and its oscillations, the paper addresses self-locating uncertainty, multiverse navigation, and consciousness interaction with quantum timelines. This innovative approach proposes new methods of testing these ideas, including Bell tests on vortex-based qubits, expanding our understanding of time and quantum reality.
Folsomina infelicia Greenslade 1999
Creators: name: Thibaud, Jean-Marc
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Collembola
Entomobryomorpha
Isotomidae
Folsomina
Folsomina infelicia

description: Folsomina infelicia Greenslade, 1999
 Folsomina infelicia Greenslade, 1999: 4.
MATÉRIEL ÉTUDIÉ. — Mahavelona (au sud de Foulpointe): 5 ex. (dont 1 juv.) 1.X.2007. Vatomandry: 2 ex. 21.VI.2006; 1 ex. 29.I.2008 (MNHN).
DISTRIBUTION. — Espèce décrite de Malaisie, retrouvée en Thaïlande, en Indonésie, au Vietnam, à Madagascar (Thibaud 2008a) et au Vanuatu (Thibaud 2009).
ÉCOLOGIE. — Espèce hémiédaphique-psammophile. Espèce rare, présente dans 2 localités sur 12 sur la côte est de Madagascar. Absente dans nos prélèvements sur deux ans à Antalaha.
description: Published as part of Thibaud, Jean-Marc, 2015, Étude des collemboles des sables littoraux de la côte est de Madagascar (interstitiels terrestres), pp. 351-362 in Zoosystema 37 (2) on page 357, DOI: 10.5252/z2015n2a4, http://zenodo.org/record/5156014
A gauge invariant formulation for the SU(N) non-linear sigma model in 2+1 dimensions
Creators: name: Fosco, C. D.
name: Constantinidis, C. P.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We derive a local, gauge invariant action for the SU(N) non-linear sigma-model in 2+1 dimensions. In this setting, the model is defined in terms of a self-interacting pseudo vector-field θ_μ, with values in the Lie algebra of the group SU(N). Thanks to a non-trivially realized gauge invariance, the model has the correct number of degrees of freedom: only one polarization of θ_μ, like in the case of the familiar Yang-Mills theory in 2+1 dimensions. Moreover, since θ_μis a pseudo-vector, the physical content corresponds to one massless pseudo-scalar field in the Lie algebra of SU(N), as in the standard representation of the model. We show that the dynamics of the physical polarization corresponds to that of the SU(N) non-linear sigma model in the standard representation, and also construct the corresponding BRST invariant gauge-fixed action.
description: LaTeX, 15 pages, no figures
Nuclear Theory and Event Generators for Charge-Changing Neutrino Reactions
Creators: name: Van Orden, J. W.
name: Donnelly, T. W.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Semi-inclusive $CCν$ cross sections based on factorized cross sections are studied for a selection of spectral function models with the objective of facilitating the choice of models for use as input into event generators. The basic formalism for such cross sections is presented along with an introduction to constructing spectral functions for simple models based on the independent particle shell model (IPSM), the relativistic Fermi gas model (RFG) and a local density approximation (LDA) based on the RFG. Spectral functions for these models are shown for $^{16}$O along with a more sophisticated model which includes nucleon-nucleon interactions \cite{ALVAREZRUSO20181}. Inclusive and semi-inclusive cross sections are calculated for these models. Although the inclusive cross sections are all of similar size and shape, the semi-inclusive cross sections are subtantially different depending upon whether the spectral functions contain some features associated with the nuclear shell model or are based on the RFG and LDA models. Calculations of average values and standard deviations of the initial neutrino energy using the semi-inclusive cross section for the various models are presented and indicate that there may be simple kinematical descriptions of the average neutrino energy which is common to all of these models.
Hedonic Pricing For Prawn and Shrimp in the Philippines
Creators: name: Salayo, Nerissa D.
name: Salayo, Nerissa D.
Publisher: name: Unknown
Year: 1997
Subjects: Livestock Production/Industries

description: The prawn and shrimp industry in the Philippines is among the most lucrative industries at the domestic and foreign prospective. This paper discusses the relevance of hedonic price analysis recognizing that improving quality is a major issue in the global seafood market due to the increasing consciousness among buyers, who are becoming "quality consumers" rather than "quantity consumers". This paper uses hedonic price model to measure the economic benefits from investing the production of good with preferred quantities of attributes or value-added features. Using primary data based on observed and measured characteristics, we develop a log-linear model with combined continuous and dummy explanation model. The estimation results show significant implicit prices of attributes such as prawn tail length, product form, freshness, species, colour, size, ease of preparation, discolouration, protein and carbohydrate content. Specifically, longer tains and banana species are highly valued. Across sizes, large and average receive price premium. Freezing, although most practiced due to availability of technology and facilities, gets the highest discount among other forms of preservation.
A brief review of long-term X-ray and optical variability in radio-quiet AGN
Creators: name: Uttley, Philip
name: McHardy, Ian M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Long-time-scale X-ray and optical variability is a key characteristic of AGN. Here, we summarise our current understanding of the X-ray and optical continuum variability of radio-quiet AGN and the relation between the two bands. We demonstrate the strong connection between the X-ray variability properties of AGN and the variability of stellar-mass black hole candidates on much shorter time-scales, and discuss the implications of this result for the origins of the variability. The relationship between optical and X-ray variability is complex, with some AGN showing strong X-ray/optical correlations while others show no obvious correlation. We suggest a possible explanation for this variety of behaviour.
description: 8 pages, invited contribution to the conference 'Stellar mass, Intermediate-mass and Supermassive black holes', October 28-31 2003, Kyoto, Japan (proceedings to be published in Progress of Theoretical Physics)
Split-off dimer defects on the Si(001)2x1 surface
Creators: name: Schofield, S. R.
name: Marks, N. A.
name: Curson, N. J.
name: O'Brien, J. L.
name: Brown, G. W.
name: Simmons, M. Y.
name: Clark, R. G.
name: Hawley, M. E.
name: Wilson, H. F.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Dimer vacancy (DV) defect complexes in the Si(001)2x1 surface were investigated using high-resolution scanning tunneling microscopy and first principles calculations. We find that under low bias filled-state tunneling conditions, isolated 'split-off' dimers in these defect complexes are imaged as pairs of protrusions while the surrounding Si surface dimers appear as the usual 'bean-shaped' protrusions. We attribute this to the formation of pi-bonds between the two atoms of the split-off dimer and second layer atoms, and present charge density plots to support this assignment. We observe a local brightness enhancement due to strain for different DV complexes and provide the first experimental confirmation of an earlier prediction that the 1+2-DV induces less surface strain than other DV complexes. Finally, we present a previously unreported triangular shaped split-off dimer defect complex that exists at SB-type step edges, and propose a structure for this defect involving a bound Si monomer.
description: 8 pages, 7 figures, submitted to Phys. Rev. B
A spatially distributed isotope sampling network in a snow-dominated catchment for the quantification of snow meltwater
Creators: name: Rücker, Andrea
name: Boss, Stefan
name: von Freyberg, Jana
name: Zappa, Massimiliano
name: Kirchner, James W.
Publisher: name: ETH Zurich
Year: 2017

description: Geophysical Research Abstracts, 19
description: ISSN:1029-7006
description: ISSN:1607-7962
Michelopagurus McLaughlin 1997
Creators: name: Lemaitre, Rafael
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Decapoda
Paguridae
Michelopagurus

description: KEY TO SPECIES OF MICHELOPAGURUS MCLAUGHLIN, 1997
 1. Rostrum acutely triangular, terminating in small spine..................................................................................................................................................... M. tangaloa n. sp. (South Pacific: French Polynesia; 485-1145 m)
— Rostrum broadly rounded, terminally unarmed........................................................................................... 2
2. Palm of right cheliped armed on dorsomesial margin with row of distinct spines......................................... 3
— Palm of right cheliped unarmed or at most with small tubercles on dorsomesial margin............................... 4
 3. Dactyls of second and third pereopods each with ventromesial row of 11-19 corneous spines; meri of second pereopods with ventral row of spinules or tubercles..................................... M. limatulus (Henderson, 1888) (Indo-West Pacific: Taiwan, Philippines, Indonesia, New Caledonia, French Polynesia, possibly India; 209-1414 m)
 — Dactyls of second and third pereopods each with ventromesial row of 9-11 corneous spines; meri of second pereopod with one or two distal spinules on ventral margin.................................................................................................................................. M. chacei McLaughlin, 1997 (Indo-West Pacific: Indonesia; 264-425 m)
 4. Palm of right cheliped with dorsal surface armed with distinct median row of small tubercles; ocular acicle terminating in small bifid spine; shield anterolateral margin rounded........................................................................................................... M. richardi (Bouvier, 1922) (northeastern Atlantic: Morocco, Mogador; 2165 m)
 — Palm of right cheliped with dorsal surface with small tubercles not arranged in rows; ocular acicles terminating bluntly, each with strong submarginal spine; shield anterolateral margins angular...................................................................................................... M. atlanticus (Bouvier, 1922) (northeastern Atlantic: Azores; 1250 m)
description: Published as part of Lemaitre, Rafael, 2015, A new species of the hermit crab genus Michelopagurus McLaughlin, 1997 (Crustacea: Decapoda: Paguridae) from Moorea, French Polynesia, pp. 363-370 in Zoosystema 37 (2) on page 368, DOI: 10.5252/z2015n2a5, http://zenodo.org/record/5156221
LGBTQ+ Engineering Students: Culture, (Non)Visibility, and Resistance
Creators: name: Yang, Jerry Austin
name: 0000-0001-5521-8523
Publisher: name: The University of Texas at Austin
Year: 2020
Subjects: LGBTQ+ engineering students
resistance
diversity and inclusion
LGBTQ+
queer
engineering
students
undergraduates

description: Recent efforts in diversity and inclusion in the engineering fields are beginning to unpack the various ways that underrepresented groups, such as racial and gender minorities, are marginalized in STEM. One key group that has been overlooked by many such programs is LGBTQ+ engineering students. Given their consistently negative experiences in engineering, such as homophobia and heteronormativity, there is a dearth of research on how LGBTQ+ engineering students may resist these challenges and create spaces in engineering in which they can thrive. I report on the results of a two-year mixed-methods study of LGBTQ+ electrical engineering students at a large public flagship university in the southwestern United States. Surveys (n = 854) and focus groups (n = 9) were conducted to capture the current climate, senses of belonging, and engineering identities of LGBTQ+ engineering students at the host institution as well as explore the ways in which the participants navigated and created space for themselves in engineering. Preliminary results show that participants used a variety of techniques to craft communities of support around them and gained institutional status to resist dominant forms of marginalization in engineering. These results suggest that LGBTQ+ students are already creating grassroots forms of change within their personal contexts, and engineering departments must continue to support and enable student efforts toward diversity and inclusion. This study has significant implications for research and practice, as these forms of resistance and grassroots change must be acknowledged by researchers, educators, and practitioners alike as they continue to move forward with diversity and inclusion initiatives.
Detrimental effects of long sedentary bouts on the biomechanical response of cartilage to sliding
Creators: name: Graham, Brian T.
name: Moore, Axel C.
name: Burris, David L.
name: Price, Christopher
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: Science Policy
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology

description: Purpose/Aim: Epidemiological evidence suggests, contrary to popular mythos, that increased exercise/joint activity does not place articular cartilage at increased risk of disease, but instead promotes joint health. One explanation for this might be activity-induced cartilage rehydration; where joint articulation drives restoration of tissue hydration, thickness, and dependent tribomechanical outcomes (e.g., load support, stiffness, and lubricity) lost to joint loading. However, there have been no studies investigating how patterning of intermittent articulation influences the hydration and biomechanical functions of cartilage. Materials and Methods: Here we leveraged the convergent stationary contact area (cSCA) testing configuration and its unique ability to drive tribological rehydration, to elucidate how intermittency of activity affects the biomechanical functions of bovine stifle cartilage under well-controlled sliding conditions that have been designed to model a typical “day” of human joint activity. Results: For a fixed volume of “daily” activity (30 min) and sedentary time (60 min), breaking up intermittent activity into longer and less-frequent bouts (corresponding to longer continuous sedentary periods) resulted in the exposure of articular cartilage to markedly greater strains, losses of interstitial pressure, and friction coefficients. Conclusions: These results demonstrated that the regularity of ex vivo activity regimens, specifically the duration of sedentary bouts, had a dominant effect on the biomechanical functions of articular cartilage. In more practical terms, the results suggest that brief but regular movement patterns (e.g., every hour) may be biomechanically preferred to long and infrequent movement patterns (e.g., a long walk after a sedentary day) when controlling for daily activity volume (e.g., 30 min).
An asymptotic relationship between homoclinic points and periodic orbit stability exponents
Creators: name: Li, Jizhou
name: Tomsovic, Steven
Publisher: name: arXiv
Year: 2019
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: The magnitudes of the terms in periodic orbit semiclassical trace formulas are determined by the orbits' stability exponents. In this paper, we demonstrate a simple asymptotic relationship between those stability exponents and the phase-space positions of particular homoclinic points.
description: 6 pages, 3 figures. arXiv admin note: text overlap with arXiv:1712.05568
Characterising nematic liquid crystals using a circular patch resonator
Creators: name: Wu, Qiang
name: Zhang, Yongwei
name: Peng, Haofeng
name: Temiz, Murat
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biophysics
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified

description: Reconfigurable microwave material is a promising candidate for designing and manufacturing tunable microwave components. Nematic liquid crystals (NLC) are such materials since their permittivity can be tuned by an external electric field. However, many NLC mixtures were not properly characterised at higher frequency bands due to requiring a complex measurement setup. In this work, a novel method using circular patch resonator (CPR) is developed to measure the dielectric constant and loss tangent of NLCs at microwave frequencies. In addition to using the cavity model for the preliminary design and analysing the fringing effect for a better accuracy, full-wave simulations are employed to confirm the final design and aid the characteristic analysis. Three prototypes were fabricated and measured to reduce uncertainty from manufacturing defects. To avoid the possible damage when higher voltage is required for a large range tuning, a coupling mechanism is proposed between the microstrip line and coplanar waveguides (CPWs) to replace connection through vias. A high accuracy with an uncertainty of 0.02 for relative permittivity estimate has been demonstrated with experiment verification, approximate 80% improvement than other typical methods. The simple design and PCB-based manufacturing techniques can be widely employed to characterise the properties of newly-developed LC mixtures.
Insensitivity of the threshold hillslope angle for shallow landsliding to climate
Creators: name: Prancevic, Jeffrey P.
name: Lamb, Michael P.
name: Kirchner, James W.
Publisher: name: ETH Zurich
Year: 2017

description: Geophysical Research Abstracts, 19
description: ISSN:1029-7006
description: ISSN:1607-7962
Surface scaling behaviour of size-selected Ag-nanocluster film growing under subsequent shadowing process
Creators: name: Barman, Pintu
name: Deka, Anindita
name: Mondal, Shyamal
name: Chowdhury, Debasree
name: Bhattacharyya, Satyaranjan
Publisher: name: arXiv
Year: 2019
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Surface morphology of size-selected silver nanocluster films grown by dc magnetron sputtering has been investigated by means of an atomic force microscopy (AFM). From the height-height correlation functions ( HHCF) obtained from corresponding AFM images, the scaling exponents are calculated and two types of growth regimes have been observed. In the first regime, the growth exponent is found to be \b{eta}1 = 0.27\pm0.07 close to the KPZ growth exponent, while in the second growth regime shadowing effect plays dominant role which gives the growth exponent value \b{eta}2 = 0.88\pm0.28. On the other hand for the whole deposition regime, the roughness exponent value is found to be constant around α= 0.76\pm0.02. UV-vis spectroscopy measurement suggests how the average reflectance of the film surface changes with different growth times.
description: 13 pages, 9 figures
Computer aided perturbation theory by cumulants: dimerized and frustrated spin 1/2 chain
Creators: name: Sykora, S.
name: Huebsch, A.
name: Becker, K. W.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: This paper demonstrates that a computer aided perturbation theory can easily be realized by use of a cumulant approach. In contrast to a recent alternative formulation on the basis of Wegner's flow equation method the present approach can be applied to systems with arbitrary Hilbert space. In particular an equidistant spectrum of the unperturbed part of the Hamiltonian is not needed. The method is illustrated in detail for dimerized and frustrated spin 1/2 chains for which the ground state energy is calculated up to seventh order perturbation theory.
description: 6 pages including 1 table, submitted to Phys. Rev. B
Transitions between phyllotactic lattice states in curved geometries
Creators: name: Ansell, H. S.
name: Tomlinson, A. A.
name: Wilkin, N. K.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Phyllotaxis, the regular arrangement of leaves or other lateral organs in plants including pineapples, sunflowers and some cacti, has attracted scientific interest for centuries. More recently there has been interest in phyllotaxis within physical systems, especially for cylindrical geometry. In this letter, we expand from a cylindrical geometry and investigate transitions between phyllotactic states of soft vortex matter confined to a conical frustum. We show that the ground states of this system are consistent with previous results for cylindrical confinement and discuss the resulting defect structures at the transitions. We then eliminate these defects from the system by introducing a density gradient to create a configuration in a single state. The nature of the density gradient limits this approach to a small parameter range on the conical system. We therefore seek a new surface, the horn, for which a defect-free state can be maintained for a larger range of parameters.
description: 16 pages, 6 figures
Supplementary information from Decomposing information into copying versus transformation
Creators: name: Artemy Kolchinsky
name: Bernat Corominas-Murtra
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Biophysics
subject: 60114 Systems Biology
subject: FOS: Biological sciences
subject: 10202 Biological Mathematics
subject: FOS: Mathematics

description: Details on the mathematical derivations
AdS and pp-wave D-particle superalgebras
Creators: name: Hatsuda, Machiko
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We derive anticommutators of supercharges with a brane charge for a D-particle in AdS(2) x S(2) and pp-wave backgrounds. A coset GL(2|2)/(GL(1))^4 and its Penrose limit are used with the supermatrix-valued coordinates for the AdS and the pp-wave spaces respectively. The brane charges have position dependence, and can be absorbed into bosonic generators by shift of momenta which results in closure of the superalgebras.
description: 15 pages
Shifting Cultivation on the Farm? Degrading Farm Practices and Optimal Long Term Land Rehabilitation
Creators: name: Schilizzi, Steven
name: Mueller, Ute
name: Schilizzi, Steven
name: Mueller, Ute
Publisher: name: Unknown
Year: 1997
Subjects: subject: Farm Management
subject: sustainable agriculture
subject: optimal control
subject: land rehabilitation
subject: salinity management
subject: phase farming

description: If farming practices are degrading the land by enhancing salinsation and soil erosion, and the appropriate way to deal with the problem is by planting trees or regenerating native brush, farmers are faced with several questions. Assuming a rather homogenous area where cropping yields have been decreasing, when should a farmer stop cropping and start planting? Conversely, when should cropping be resumed? On a long term basis, what is the economically optimal pattern between cropping and land rehabilitation? How do differences in soil quality and related production and rehabilitation rates affect management outcomes? The basic question is first investigated in terms of optimal switching times, when switching incurs a cost, then optimality conditions are given the real situations farmers face. Namely, spatial synergies, such as alley-cropping, are likely to be preferred to temporal solutions. But the time dimension will never be absent from sustainable farm management.
Probe Ferroelectricity by X-ray Absorption Spectroscopy in Molecular Crystal
Creators: name: Tang, Fujie
name: Jiang, Xuanyuan
name: Ko, Hsin-Yu
name: Xu, Jianhang
name: Topsakal, Mehmet
name: Hao, Guanhua
name: N'Diaye, Alpha T.
name: Dowben, Peter A.
name: Lu, Deyu
name: Xu, Xiaoshan
name: Wu, Xifan
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We carry out X-ray absorption spectroscopy experiment at oxygen K-edge in croconic acid (C5H2O5) crystal as a prototype of ferroelectric organic molecular solid, whose electric polarization is generated by proton transfer. The experimental spectrum is well reproduced by the electron-hole excitation theory simulations from configuration generated by ab initio molecular dynamics simulation. When inversion symmetry is broken in ferroelectric state, the hydrogen bonding environment on the two bonded molecules become inequivalent. Such a difference is sensitively probed by the bound excitation in the pre-edge, which are strongly localized on the excited molecules. Our analysis shows that a satellite peak in the pre-edge will emerge at higher excitation energy which serves as a clear signature of ferroelectricity in the material.
description: 6 pages, 3 figures
Cerapachys (Syscia) silvestrii Wheeler
Creators: name: Swezey, O. H.
Publisher: name: Bernice P. Bishop Museum
Year: 1942
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Cerapachys
Cerapachys silvestrii

description: *1. Cerapachys (Syscia) silvestrii Wheeler,
 Lab. Zool. Agrar., Portici, Boll. 3: 269, 1909; B. P. Bishop Mus., 0cc. Papers 10(21): 9, 1934, and 11 (11): 8, 1935.
Piti, in house, July, Swezey: in garden, Sept. 20, Swezey; Yigo, Oct. 18, Swezey.
This ant was described from Hilo, Hawaii, and has also been collected in Honolulu. It is now recorded outside of the Hawaiian islands for the first time. It was not previously collected in Guam.
description: Published as part of Swezey, O. H., 1942, Hymenoptera Formicidae of Guam, pp. 175-183 in Insects of Guam I, Honolulu, Hawaii :Bernice P. Bishop Museum on pages 175-176, DOI: 10.5281/zenodo.5160270
A coupled multipoint stress -- multipoint flux mixed finite element method for the Biot system of poroelasticity
Creators: name: Ambartsumyan, Ilona
name: Khattatov, Eldar
name: Yotov, Ivan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: We present a mixed finite element method for a five-field formulation of the Biot system of poroelasticity that reduces to a cell-centered pressure-displacement system on simplicial and quadrilateral grids. A mixed stress-displacement-rotation formulation for elasticity with weak stress symmetry is coupled with a mixed velocity-pressure Darcy formulation. The spatial discretization is based on combining the multipoint stress mixed finite element (MSMFE) method for elasticity and the multipoint flux mixed finite element (MFMFE) method for Darcy flow. It uses the lowest order Brezzi-Douglas-Marini mixed finite element spaces for the poroelastic stress and Darcy velocity, piecewise constant displacement and pressure, and continuous piecewise linear or bilinear rotation. A vertex quadrature rule is applied to the velocity, stress, and stress-rotation bilinear forms, which block-diagonalizes the corresponding matrices and allows for local velocity, stress, and rotation elimination. This leads to a cell-centered positive-definite system for pressure and displacement at each time step. We perform error analysis for the semidiscrete and fully discrete formulations, establishing first order convergence for all variables in their natural norms. The numerical tests confirm the theoretical convergence rates and illustrate the locking-free property of the method.
No quantum ergodicity for star graphs
Creators: name: Berkolaiko, G.
name: Keating, J. P.
name: Winn, B.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Mathematical Physics (math-ph)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We investigate statistical properties of the eigenfunctions of the Schrodinger operator on families of star graphs with incommensurate bond lengths. We show that these eigenfunctions are not quantum ergodic in the limit as the number of bonds tends to infinity by finding an observable for which the quantum matrix elements do not converge to the classical average. We further show that for a given fixed graph there are subsequences of eigenfunctions which localise on pairs of bonds. We describe how to construct such subsequences explicitly. These constructions are analogous to scars on short unstable periodic orbits.
description: 26 pages, 5 figures
Additional file 1 of Comparison of statistical and machine learning models for healthcare cost data: a simulation study motivated by Oncology Care Model (OCM) data
Creators: name: Mazumdar, Madhu
name: Lin, Jung-Yi Joyce
name: Zhang, Wei
name: Li, Lihua
name: Liu, Mark
name: Dharmarajan, Kavita
name: Sanderson, Mark
name: Isola, Luis
name: Hu, Liangyuan
Publisher: name: figshare
Year: 2020
Subjects: Medicine
Biological Sciences not elsewhere classified
Information Systems not elsewhere classified
Mathematical Sciences not elsewhere classified

description: Additional file 1: Figure S1A-D: RMSEs estimated from the five models with varied sample sizes. S1A: Gamma distribution, S1B: Weibull distribution, S1C: Heteroscedastic log-normal distribution, S1D: Heavy-tailed distribution. Results were plotted based on 1000 bootstrapped samples except for correctly specified and main effects-only Gamma GLM for heavy-tailed distribution (N = 200). Results using Gamma GLM with correct specification of interaction and non-linear terms for 200 samples, plotted based on the 286 converged models. Results using Gamma GLM with main effects only for the same scenario were plotted based on the 680 converged models. Results using Gamma GLM, PLAQR estimating 50th percentile on original scale, and RF with original scale of cost are shown.
Cross-Compliance policies and EU Agriculture: Missing All The Targets at the Same Time?
Creators: name: Schou, Jesper S.
name: Rygnestad, Hild
name: Schou, Jesper S.
name: Rygnestad, Hild
Publisher: name: Unknown
Year: 1996
Subjects: subject: Agricultural and Food Policy
subject: Common Agricultural Policy
subject: Cross-compliance
subject: Nitrate leaching

description: After the 1992 Common Agricultural Policy Reform, the idea of introducing cross-compliance into the European Union agricultural policy has become more and more popular. Cross-compliance can be defined as making income support conditional on farmers conforming to environmental regulations and standards imposed on agricultural production. From economic theory it is known that, in order to establish and efficient policy, there should be correspondence between the number of policy objectives and the number of instruments. This has been neglected in the case of European cross-compliance policies and, in order to discuss the effects of the Common Agricultural Policy and efficiency properties, a simulation model has been applied to analyze the effects of introducing environmentally related objectives concerning nitrate leaching as a supplement to the current aim of income support in the Common Agricultural Policy. Results suggest that combining output reduction and nitrate leaching reduction is less effective than separate policies for these two objectives.
Ponera punctatissima subsp. schauinslandi Emery
Creators: name: Swezey, O. H.
Publisher: name: Bernice P. Bishop Museum
Year: 1942
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Ponera
Ponera punctatissima
Ponera punctatissima subspecies schauinslandi emery

description: 2. Ponera punctatissima subspecies schauinslandi Emery,  Zool. Jahrb. Abt. Syst. 12: 438, 1899.
Wheeler, New York Ent. Soc., Jour. 20: 44, 1912; B. P. Bishop Mus., 0cc. Papers 11 (11): 13, 1935.
 Agana Swamp, May 4, in rotten Pandanus log, Swezey, Usinger; Piti, in house, Aug. 9, at base of sedges, Aug. 24, swept from sedges, Sept. 21, Swezey.
This subspecies was described from Laysan Island. Previously collected in Guam by Fullaway in 1911.
description: Published as part of Swezey, O. H., 1942, Hymenoptera Formicidae of Guam, pp. 175-183 in Insects of Guam I, Honolulu, Hawaii :Bernice P. Bishop Museum on page 176, DOI: 10.5281/zenodo.5160270
Shot noise of spin current
Creators: name: Wang, Baigeng
name: Wang, Jian
name: Guo, Hong
Publisher: name: arXiv
Year: 2003
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We report an exact solution for the noise spectrum of spin-current without charge-current in a spin field effect transistor (SFET). For the SFET with two leads, it is found that both auto- and cross-correlation functions are needed to characterize the noise of spin-current. A shot noise is also generated for the charge-current even though the net charge-current is identically zero. The noise spectra of spin-current and charge-current depends on the coupling strength between the SFET and the leads, and they may behave qualitatively differently. We also present results of noise spectra in the adiabatic regime.