cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Accretion-related properties of Herbig Ae/Be stars. Comparison with T Tauris
Creators: name: Mendigutía, I.
name: Mora, A.
name: Montesinos, B.
name: Eiroa, C.
name: Meeus, G.
name: Merín, B.
name: Oudmaijer, R. D.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We look for trends relating the mass accretion rate (Macc) and the stellar ages (t), spectral energy distributions (SEDs), and disk masses (Mdisk) for a sample of 38 HAeBe stars, comparing them to analogous correlations found for classical T Tauri stars. Our goal is to shed light on the timescale and physical processes that drive evolution of intermediate-mass pre-main sequence objects. Macc shows a dissipation timescale τ= 1.3^{+1.0}_{-0.5} Myr from an exponential law fit, while a power law yields Macc(t) \propto t^{-η}, with η= 1.8^{+1.4}_{-0.7}. This result is based on our whole HAeBe sample (1-6 Msun), but the accretion rate decline most probably depends on smaller stellar mass bins. The near-IR excess is higher and starts at shorter wavelengths (J and H bands) for the strongest accretors. Active and passive disks are roughly divided by 2 x 10^{-7} Msun/yr. The mid-IR excess and the SED shape from the Meeus et al. classification are not correlated with Macc. We find Macc \propto Mdisk^{1.1 +- 0.3}. Most stars in our sample with signs of inner dust dissipation typically show accretion rates ten times lower and disk masses three times smaller than the remaining objects. The trends relating Macc with the near-IR excess and Mdisk extend those for T Tauri stars, and are consistent with viscous disk models. The differences in the inner gas dissipation timescale, and the relative position of the stars with signs of inner dust clearing in the Macc-Mdisk plane, could be suggesting a slightly faster evolution, and that a different process - such as photoevaporation - plays a more relevant role in dissipating disks in the HAeBe regime compared to T Tauri stars. Our conclusions must consider the mismatch between the disk mass estimates from mm fluxes and the disk mass estimates from accretion, which we also find in HAeBe stars.
description: 11 pages, 7 figures, 1 appendix. Accepted in A&A
The effects of structured variation in nectar standing crop on currency choice and optimal foraging by bumble bees
Creators: name: Simspon, Paul
Publisher: name: Graduate Studies
Year: 2014
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: Behavior
subject: foraging
subject: Nectar

description: Foragers commonly exploit patchy habitats in which resource abundance can vary within and among patches. Studies measuring resource variation tend to consider only single sources of variation, so the extent of structured resource variation and how it impacts foraging animals are unclear. A survey of nectar abundance in five plant species revealed the spectrum from only within- to solely among-plant variation. Captive bumble bees (Bombus impatiens) confronted with an increasing component of among-inflorescence nectar variation departed inflorescences in manners that diverged increasingly from expectations of the Marginal Value Theorem (MVT). Bees apparently assess inflorescence quality on a per-patch basis, changing their exploitation behavior in response to poor or rewarding inflorescences as expected from a speed-accuracy trade-off, rather than maximizing their overall average return rate. This quantitative test of the MVT demonstrates the need to incorporate responses to variation within patches in models of forager behavior.
Federated Learning is Better with Non-Homomorphic Encryption
Creators: name: Burlachenko, Konstantin
name: Alrowithi, Abdulmajeed
name: Albalawi, Fahad Ali
name: Richtarik, Peter
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cryptography and Security (cs.CR)
subject: Machine Learning (cs.LG)
subject: Optimization and Control (math.OC)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: G.1.6; E.3

description: Traditional AI methodologies necessitate centralized data collection, which becomes impractical when facing problems with network communication, data privacy, or storage capacity. Federated Learning (FL) offers a paradigm that empowers distributed AI model training without collecting raw data. There are different choices for providing privacy during FL training. One of the popular methodologies is employing Homomorphic Encryption (HE) - a breakthrough in privacy-preserving computation from Cryptography. However, these methods have a price in the form of extra computation and memory footprint. To resolve these issues, we propose an innovative framework that synergizes permutation-based compressors with Classical Cryptography, even though employing Classical Cryptography was assumed to be impossible in the past in the context of FL. Our framework offers a way to replace HE with cheaper Classical Cryptography primitives which provides security for the training process. It fosters asynchronous communication and provides flexible deployment options in various communication topologies.
description: 56 pages, 10 figures, Accepted to presentation and proceedings to 4th ACM International Workshop on Distributed Machine Learning
Seeing Biomedically: the Routine Grounds of Translation in Patient Oriented Research
Creators: name: Harasym, Patricia Marie
Publisher: name: Graduate Studies
Year: 2014
Subjects: subject: Speech Communication
subject: Speech Communication
subject: Ethnomethodology
subject: Patient Oriented Translational Research

description: In this dissertation, I show how two doctors perpetuate social divisions and reproduce biomedicine as an institution of social control when taking a patient oriented approach to translational research. The two doctors collected data directly from patients and privileged patients’ personal experience of disease. One doctor presented the patient’s authentic voice of experience at an international medical conference. The doctors considered themselves dedicated to normalizing patients and preventing the difficulties and challenges of social exclusion. Yet, an ethnomethodological analysis of transcripts of conversations between the two doctors and between one of the doctors and a patient reveal that the two doctors normalize and marginalize patients they recognize as “disease damaged”, concealing patients’ lived experiences of social inequality. The doctors’ research protocol encourages and facilitates collaboration between patients, their attending doctors and the research team. A patient, who was a practicing physician before she had the disease, is the Principal Investigator’s Research Assistant. The Principal Investigator treats his Research Assistant as an expert patient and as a physician colleague. The PI takes a patient oriented approach when collecting and analyzing the patient’s descriptions of her disease experience. The patient speaks for herself as the voice of experience at an international medical conference. A close analysis of the transcripts reveals, however, that given their accountabilities as translational researchers to the scientific community, the doctors exclude permanent disease damage as a researchable topic. The doctors sympathetically acknowledge the consequences of disease damage, express empathy toward, patients they regard as a “disease-damaged”. Yet, by viewing these patients’ experiences through the translational research lens, they also produce social inequality. Patient oriented translational research reproduces cultural knowledge about biomedicine as an institution of social control and perpetuates social divisions.
INTRALINGVAL LAKUNALARNING LISONIY TABIATI
Creators: name: Shaymardanova, Aziza
Publisher: name: Zenodo
Year: 2023

description: Maqolada   tillararo lakunalar va bir til ichida voqelanuvchi lakunalar,   uning  tasnifi   hamda muloqotda lakunarlikning namoyon bo'lishi to'g'risida fikr yuritilgan.
Building Strong Relationships between Parents and Their Children with an Autism Spectrum Disorder
Creators: name: Jubenville, Theresa Marie
Publisher: name: Graduate Studies
Year: 2014
Subjects: subject: Educational Psychology
subject: Education--Guidance and Counseling
subject: Autism Spectrum Disorder
subject: Counselling
subject: Parent-Child Relationships

description: This research used a strength-based approach to explore parents’ perceptions of the relationship with their child diagnosed with an Autism Spectrum Disorder. Using the exploratory methodology of the Enhanced Critical Incident Technique, seven parents were interviewed about what helped in building a strong relationship with their child. From these interviews, 10 categories were formed: (a) Enjoying Time Together, (b) Working as a Parent-Child Team, (c) Learning about Autism and How to Help, (d) Joining in the Child’s Interests, (e) Accessing Professional Support, (f) Accommodating the Child’s Diagnosis, (g) Working to Overcome Challenge, (h) Receiving Support from Family, (i) Having a Flexible Workplace, and (j) Parent Self-Care. These categories are discussed in relation to the attachment, parenting, and disability literature. Recommendations for counselling professionals and parents are offered based on the findings and scholarly literature
Infra-red emission line tomography of the intergalactic medium during the Epoch of Reionization
Creators: name: Kakiichi, Koki
name: Meiksin, Avery
name: Tittley, Eric
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The first major star-forming galaxies and Active Galactic Nuclei will produce Balmer and higher order extended haloes during the Epoch of Reionization through the scattering of Lyman resonance line photons off the surrounding neutral intergalactic gas. The optical depth dependence of the scattering rates will produce a signal sensitive to both the density and velocity fluctuations of the gas, offering the possibility of probing the ionization region and flow field surrounding young star-forming galaxies. The requirements for detecting the haloes in the infra-red using a space-based telescope are discussed, along with an assessment of the possibility of detecting the haloes using the Tunable Filter Imager on the James Webb Space Telescope.
description: 7 pages, 10 figures. Submitted to MNRAS
Analysis of the general uncertainty propagation and calculation of the systematic uncertainty of the Neumann Equation of State for surface free energy determination
Creators: name: Schuster, Jonathan M.
name: Schvezov, Carlos E.
name: Rosenberger, Mario R.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The determination of the surface free energy $γ_{\text{SV}}$ of solid materials provides information to explain and understand a wide variety of phenomena in surface science. One of the most widely used methods to determine the value of $γ_{\text{SV}}$ is the Neumann equation of state (EQS), whose application requires the values of the contact angle $(θ)$ and the surface tension of a probe liquid $γ_{\text{LV}}$. Both parameters are determined experimentally, and their values may be subject to considerable uncertainty. In the present work, the uncertainties of the EQS are analyzed by means of the Taylor series method, using a polynomial adjustment to the EQS previously reported. This analysis allowed us to determine the effects of the $θ$ and $γ_{\text{LV}}$ uncertainties on $γ_{\text{SV}}$ values. The $γ_{\text{SV}}$ of polyoxymethylene (POM) and polytetrafluoroethylene (PTFE) was calculated using the EQS from four probe liquids and taking into account the propagation of the $θ$ and $γ_{\text{LV}}$ uncertainties. Generally, the comparison of the $γ_{\text{SV}}$ values calculated from the different probe fluids revealed significant differences. As a solution to this inconsistency in the EQS method, we proposed taking into account a systematic standard uncertainty associated with the method equal to $1.3 \, \text{mJ/m}^2$ . This allowed the differences between the $γ_{\text{SV}}$ values for the different probe liquids to be non-significant and therefore the method to be consistent.
description: 46 pages, 6 tables, 10 figures
Environmental deformations dynamically shift the grid cell spatial metric
Creators: name: Keinath, Alexandra T
name: Epstein, Russell A
name: Balasubramanian, Vijay
Publisher: name: University of Illinois at Chicago
Year: 2023
Subjects: Uncategorized

description: In familiar environments, the firing fields of entorhinal grid cells form regular triangular lattices. However, when the geometric shape of the environment is deformed, these time-averaged grid patterns are distorted in a grid scale-dependent and local manner. We hypothesized that this distortion in part reflects dynamic anchoring of the grid code to displaced boundaries, possibly through border cell-grid cell interactions. To test this hypothesis, we first reanalyzed two existing rodent grid rescaling datasets to identify previously unrecognized boundary-tethered shifts in grid phase that contribute to the appearance of rescaling. We then demonstrated in a computational model that boundary-tethered phase shifts, as well as scale-dependent and local distortions of the time-averaged grid pattern, could emerge from border-grid interactions without altering inherent grid scale. Together, these results demonstrate that environmental deformations induce history-dependent shifts in grid phase, and implicate border-grid interactions as a potential mechanism underlying these dynamics.
Stories of hope: conversations with aboriginal women who have experienced incarceration
Creators: name: Radtke, Janis Leigh
Publisher: name: Graduate Studies
Year: 2012
Subjects: subject: Nursing
subject: FOS: Health sciences
subject: Hope
subject: Aboriginal
subject: Women
subject: Incarceration

description: The purpose of this research study was to explore the meaning of hope for Aboriginal women who have experienced incarceration and to offer an opportunity for their voices to emerge. Conversations with six Aboriginal women provided descriptions of how hope influenced their lives before, during, and after incarceration. van Manen’s (1990) phenomenological research design guided this study together with a feminist perspective. The colonization and assimilation of First Nations people by Canada’s early settlers changed the fabric of their lives and created an inherent burden that is distressingly evident to this day. Aboriginal women, once respected and valued, struggle daily to meet the demands of a society that has oppressed them for decades. Yet, somehow, these brave women have found the strength, resilience, and survival skills to meet another day. This thesis presents their stories and discusses the underlying themes as well as the implications for nursing and future research.
In Polen brummt ein wilder Bär (1939) Die merkwürdige NS-Plastik des Stuttgarter Bildhauers Joseph Zeitler
Creators: name: Artinger, Kai
Publisher: name: Universität Regensburg
Year: 2023
Subjects: subject: 700 Künste, Bildende Kunst allgemein

description: Das Kunstmuseum Stuttgart untersuchte jüngst die Geschichte der Anfänge seiner Skulpturensammlung. Deren Aufbau betrieben die Nationalsozialisten vor dem Hintergrund der Gründung des städtischen Kunstmuseums. Das alte Inventar der Plastiken verbrannte bei der Zerstörung des Kunstschutzlagers der Stadt Stuttgart kurz vor Ende des Krieges. Dabei wurden auch Skulpturen vernichtet, unter anderen vom Bildhauer Joseph Zeitler (1871–1958). Weil sich nur sehr wenige Dokumente erhalten haben, ist es sehr schwierig, die Entstehung des Skulpturenbestands und seine Zusammensetzung vollständig zu rekonstruieren. Bei der Erforschung des Bestands wurde nun erstmals eine sehr ungewöhnliche NS-Plastik Joseph Zeitlers untersucht, über die bis vor kurzem nichts bekannt war, außer dass sie von der Stadt Stuttgart für ein Projekt mit dem Titel „Zeitgeschichte 1981“ vom Württenbergischen Kunstverein Stuttgart (WKV) angekauft und später in die Skulpturensammlung des Kunstmuseum Stuttgart integriert wurde. Die mit dem Titel Kriegsplastik inventarisierte Skulptur ist ein Beispiel für NS-Propagandakunst und das einzige Werk dieser Art, die das Kunstmuseum besitzt. Warum das Museum sie annahm, obwohl sie seitdem nie ausgestellt wurde, und warum der WKV bis 1981 in seinem Kunstbesitz NS-Propagandakunst aufbewahrte, sind nur einige der Fragen, auf die in diesem Aufsatz Antworten gesucht werden. Dazu gehört auch, warum ein Stuttgarter Künstler nach dem deutschen Überfall auf Polen vom 1. September 1939 eine dreidimensionale Karikatur auf die besiegte Nation anfertigte – eine Plastik, die einzigartig in der Kunst im „Dritten Reich“ zu sein scheint, weil ihr derzeit nichts Vergleichbares zur Seite gestellt werden kann.
Modelling fully convective stars in eclipsing binaries: KOI-126 and CM Draconis
Creators: name: Spada, Federico
name: Demarque, Pierre
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present models of the components of the systems KOI-126 and CM Draconis, the two eclipsing binary systems known to date to contain stars with masses low enough to have fully convective interiors. We are able to model satisfactorily the system KOI-126, finding consistent solutions for the radii and surface temperatures of all three components, using a solar-like value of the mixing-length parameter αin the convection zone, and PHOENIX NextGen 1D model atmospheres for the surface boundary conditions. Depending on the chemical composition, we estimate the age of the system to be in the range 3-5 Gyr. For CM Draconis, on the other hand, we cannot reconcile our models with the observed radii and T_eff using the current metal-poor composition estimate based on kinematics. Higher metallicities lessen but do not remove the discrepancy. We then explore the effect of varying the mixing length parameter α. As previously noted in the literature, a reduced αcan be used as a simple measure of the lower convective efficiency due to rotation and induced magnetic fields. Our models show a sensitivity to α(for α< 1.0) sufficient to partially account for the radius discrepancies. It is, however, impossible to reconcile the models with the observations on the basis of the effect of the reduced αalone. We therefore suggest that the combined effects of high metallicity and αreduction could explain the observations of CM Draconis. For example, increasing the metallicity of the system towards super-solar values (i.e. Z = 2 Z_sun) yields an agreement within 2 σwith α= 1.0.
description: 7 pages, 4 figures, accepted for publication in MNRAS
Structural study in Highly Compressed BiFeO3 Epitaxial Thin Films on YAlO3
Creators: name: Liu, Heng-Jui
name: Chen, Hsiang-Jung
name: Liang, Wen-I
name: Liang, Chen-Wei
name: Lee, Hsin-Yi
name: Lin, Su-Jien
name: Chu, Ying-Hao
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report a study on the thermodynamic stability and structure analysis of the epitaxial BiFeO3 (BFO) thin films grown on YAlO3 (YAO) substrate. First we observe a phase transition of MC-MA-T occurs in thin sample (<60 nm) with an utter tetragonal-like phase (denoted as MII here) with a large c/a ratio (~1.23). Specifically, MII phase transition process refers to the structural evolution from a monoclinic MC structure at room temperature to a monoclinic MA at higher temperature (150oC) and eventually to a presence of nearly tetragonal structure above 275oC. This phase transition is further confirmed by the piezoforce microscopy measurement, which shows the rotation of polarization axis during the phase transition. A systematic study on structural evolution with thickness to elucidate the impact of strain state is performed. We note that the YAO substrate can serve as a felicitous base for growing T-like BFO because this phase stably exists in very thick film. Thick BFO films grown on YAO substrate exhibit a typical "morphotropic-phase-boundary"-like feature with coexisting multiple phases (MII, MI, and R) and a periodic stripe-like topography. A discrepancy of arrayed stripe morphology in different direction on YAO substrate due to the anisotropic strain suggests a possibility to tune the MPB-like region. Our study provides more insights to understand the strain mediated phase co-existence in multiferroic BFO system.
description: 18 pages, 6 figures, submitted to Journal of Applied Physics
Let’s Figure This Out Together: Young Married Couples’ Milestone Conversations
Creators: name: Merritt, Samantha Marie
Publisher: name: Graduate Studies
Year: 2014
Subjects: subject: Educational Psychology
subject: couples
subject: marriage
subject: decisions

description: In this research, I examined how young married couples make milestone decisions through conversations in ways that strengthen their relationships. Consideration was given to how the couples and I co-constructed the stories of making milestone decisions (i.e., ones the couple deems emotionally and/or practically significant for their relationship). Participant couples told stories of three decision-making conversations, connected those conversations in a story of how they make milestone decisions as a couple, and reflected on their interview experience. Using a bricolage of Riessman’s (2008) thematic and dialogic/performative approaches, derived from a social constructionist perspective, I analyzed the stories the couples and I co-constructed in the interviews. The couples engaged in a variety of collaborative relational practices to make milestone decisions in marriage-strengthening ways. They tended to connect their decision- making conversations by emphasizing their individuality and/or deciding together. I discuss the implications of my research for young married couples, counsellors, and researchers.
The Double Slit Experiment With Polarizers
Creators: name: Holden, M.
name: McKeon, D. G. C.
name: Sherry, T. N.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The double slit experiment provides a standard way of demonstrating how quantum mechanics works. We consider modifying the standard arrangement so that a photon beam incident upon the double slit encounters a polarizer in front of either one or both of the slits.
description: 6 pages
Automated Control for Oil Sands SAGD Operations
Creators: name: Guo, Tao
Publisher: name: Graduate Studies
Year: 2014
Subjects: subject: Engineering--Chemical
subject: SAGD
subject: oil sands
subject: Smart well
subject: PID Control
subject: SOR

description: The Steam Assisted Gravity Drainage (SAGD) process is widely used in the Athabasca oil sands deposit to recover extra heavy oil, also referred to as bitumen. Since the viscosity of bitumen is high, typically over 1 million cP, at original reservoir conditions, heat is required to lower its viscosity to the point it becomes mobile enough to be recovered under gravity drainage. To heat the reservoir, steam is injected into the formation and thus SAGD is energy intense – on average, the steam-to-oil ratio (SOR) is equal to about 3.5 m3 (expressed as cold water equivalent) of steam injected per m3 of bitumen produced. Given that the fuel used to generate steam is the largest operating cost, the SOR is a key control on the economics of any SAGD project. The target for many SAGD operations is a SOR lower than 2.5m3/m3. However, very few field operations have achieved this threshold. Here, the use of dynamic distributed steam injection within a pad of SAGD wellpairs controlled via a Proportional-Integral-Derivative (PID) feedback controller to lower the SOR is explored, a concept we refer to as Smart Pad. The Smart Pad is designed to dynamically distribute steam injection along multiple well pairs so that over a period of operation, the pad-scale cSOR is lowered as the process evolves. First, a method to condition the PID control gains is described and second, the controller is applied to a multiple well pair SAGD pad in a typical Athabasca oil sands reservoir. The results demonstrate that automated control can lead to improvements of the SOR over that of constant pressure. The results show that automated PID control is able to detect “sweet spots” (oil zones with better geological properties) in the reservoir and dynamically deliver more steam to that region. Meanwhile, it reduces the steam injection towards relatively worse quality zones, i.e. shale barriers, to lower the local SOR. In this manner, the PID feedback controller provides an effective method to control SAGD operations, especially over the first 7 to 10 years of operation, where for the same amount of steam injection, it helps to achieve reduced cSOR and increased oil recovery. Also, since the PID controller dynamically controls the process according to its performance, the method appears to reduce the degree of dependence of SAGD operation on knowledge of the geological conditions of the reservoir. The algorithm described could be applied to any operating or new SAGD pad.
Kunstgeographie – nur eine Banalität?
Creators: name: Meckseper, Cord
Publisher: name: Universität Regensburg
Year: 2023
Subjects: subject: 700 Künste, Bildende Kunst allgemein

description: Plädiert wird für eine strikte Trennung zwischen dem Begriff ‚Kunstgeographie‘ als räumliche Gesamtverbreitung bestimmter Kunstformen und dem metahistorischen Konstrukt (Willibald Sauerländer) ‚Kunstlandschaft‘. Statt des Epiphänomens ‚Stil’ ist kunstgeographisch einzig feste Basis sein Ausdrucksträger: die sachliche Realie ‚Artefakt‘. Ihr räumlicher Verbreitungsvorgang entsprach dem allgemeiner Warenwelt. Das spezifische Bild der Verbreitung, als solches nicht intendiert, spiegelt nur bedingt soziale ‚Identitäten‘, verfügt jedenfalls über keinen eigenen Sinn beispielsweise als Wissens- oder Gedächtnisspeicher. Historisch vertiefter nachzugehen wäre vielmehr den anthropologischen Gründen der Wiederholung und Verbreitung von Kunstformen.
Global Structure of Magnetorotationally Turbulent Protoplanetary Discs
Creators: name: Flaig, M.
name: Ruoff, P.
name: Kley, W.
name: Kissmann, R.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The aim of the present paper is to investigate the spatial structure of a protoplanetary disc whose dynamics is governed by magnetorotational turbulence. We perform a series of local 3D chemo-radiative MHD simulations located at different radii of a disc which is twice as massive as the standard minimum mass solar nebula of Hayashi (1981). The ionisation state of the disc is calculated by including collisional ionisation, stellar X-rays, cosmic rays and the decay of radionuclides as ionisation sources, and by solving a simplified chemical network which includes the effect of the absorption of free charges by μm-sized dust grains. In the region where the ionisation is too low to assure good coupling between matter and magnetic fields, a non-turbulent central "dead zone" forms, which ranges approximately from a distance of 2 AU to 4 AU from the central star. The approach taken in the present work allows for the first time to derive the global spatial structure of a protoplanetary disc from a set of physically realistic numerical simulations.
description: 11 pages, 12 figures, MNRAS accepted
MPEC 2023-X50 : 2023 XO
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 XO

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Swedish architecture published and discussed in Germany: Reception of Swedish architecture by German traditionalism before 1930
Creators: name: Knauff, Kristina
Publisher: name: Universität Regensburg
Year: 2023
Subjects: subject: 700 Künste, Bildende Kunst allgemein

description: This article examines the German reception of Swedish classicism in the late 1920s through the lens of several German publications, highlighting the similarities and differences between Swedish and German architecture of the time, as well as the cultural and intellectual exchanges between the two countries. By analyzing the values and themes that emerge in the texts on Swedish architecture in the German publications, this article sheds light on the reception and interpretation of Swedish architecture in a broader European context.
Constructing meaning: Task demands and the time course of lexical and semantic processing in visual word recognition
Creators: name: Hargreaves, Ian
Publisher: name: Graduate Studies
Year: 2014
Subjects: subject: Psychology
subject: FOS: Psychology
subject: Psychology--Cognitive
subject: Psychology--Experimental
subject: lexical semantics
subject: semantic richness
subject: visual word recognition
subject: signal to respond procedure
subject: time course

description: The ultimate goal of word recognition is accessing meaning, indeed, the desire to characterize how and when words contact meaning has driven the development of numerous computational models (e.g., Coltheart et al., 2001; McRae, de Sa & Seidenberg, 1997; Morton, 1969). While progress has been made, there is still little agreement between models when it comes to semantic representation. Many studies suggest that semantic access is not a unitary phenomenon, but is better characterized as a diverse set of processes that construct meaning in order to suit the current context (Yap et al., 2012). Across two studies we investigated the dynamic nature of semantic processing. First, we investigated the relative availability of language- and object-based semantic information by tracking the time course of semantic richness effects in word recognition using a signal-to-respond (STR) paradigm fitted to a lexical decision (LDT) and a semantic categorization (SCT) task. We used linear mixed effects to examine the relative contributions of language-based (number of senses, ARC) and object-based (imageability, number of features, body-object interaction ratings) descriptions of semantic richness at four STR durations (75, 100, 200, and 400 milliseconds). Results showed an early influence of number of senses and ARC in the SCT. In both LDT and SCT, object-based effects were the last to influence participants’ decision latencies. Second, we expanded upon our investigation of task-effects on semantic activation by contrasting the event-related potentials associated with two semantic categorization tasks (SCT) using electroencephalography. The two SCTs involved different decision categories: is it an animal? vs. is it a concrete thing? Participants completed both tasks and, across participants, the same core set of items was presented. Despite null differences in reaction time, under the concreteness decision we observed greater negativities in an N400 window (300-500) than when the same items were presented under the animal decision. This task-driven N400 concreteness effect suggests that top down modulation of semantic processing can be elicited by minor shifts in decision criteria. We interpret our results within a framework in which conceptual representations are not simply accessed from memory, but are dynamically constructed (Kiefer, 2012; Kutas & Federmeier, 2011).
An Examination of Emerging Public and Expert Judgments of Solar Radiation Management
Creators: name: Mercer, Ashley
Publisher: name: Graduate Studies
Year: 2014
Subjects: subject: Atmospheric Sciences
subject: FOS: Earth and related environmental sciences
subject: Psychology
subject: FOS: Psychology
subject: Acceptability
subject: Geoengineering
subject: Expert judgment
subject: Lay opinion
subject: Emerging technology

description: Solar Radiation Management (SRM) is a proposed climate intervention that masks anthropogenic climate warming by reflecting a small amount of sunlight. One possible method to achieve this cooling is through the continual injection of sulphate aerosols into the stratosphere. This would cool the planet quickly and cheaply, but also pose numerous physical and socio-political risks. At the outset of this dissertation, there was limited empirical research on opinions and judgments of SRM. This thesis examines criteria influencing its acceptability, through two studies: 1) the first quantitative evaluation of international public opinion on SRM, and 2) an evaluation of expert trade-off judgments of climate responses, including SRM. Results from an online survey of 3105 nationally-represented individuals of the United States, Canada and the United Kingdom suggest that awareness of SRM in public audiences is low, but growing. Support for SRM is associated with optimism about scientific research, a valuing of SRM’s benefits, and a perception that SRM is natural. Opposition to SRM is associated with an attitude that nature should not be manipulated. Individuals expressed concerns with: trusting the science of SRM; future control and governance of the technology; knowledge limitations; and distribution of harms and benefits. The sampled opinions are just forming and sensitive to changes in framing, future information, and context. The results of an online expert survey of 43 climate experts provided contextualized trade-off judgments between climate responses e.g. mitigation, SRM, and adaptation. SRM was consistently ranked as the lowest preference, despite high estimates of its effectiveness at managing temperature rise, and reducing ecosystem impacts and human vulnerabilities. Mitigation and efficiency measures were widely preferred responses, despite low assessments of their effectiveness. Assessments of SRM were characterized by large variability. Overall, nine criteria for acceptability of SRM were identified: perceived effectiveness of mitigation; extent and quality of the intervention; level of social trust; perceived benefits; perceived risks; perceived naturalness; perceived control; perceived uncertainty; and perceived climate threat. Judgments about the acceptability of SRM are being made on a wide set of criteria, as such, there is no unifying public or expert opinion of SRM.
A Study on the Flow Behavior of Microbubbles in Capillary Tubes
Creators: name: Shams, Mohammad Mehdi
Publisher: name: Graduate Studies
Year: 2014
Subjects: subject: Engineering--Chemical
subject: Engineering--Petroleum
subject: Microbubble
subject: Capillary Tube
subject: Viscosity
subject: Friction Factor

description: Recently microbubbles have gained an enormous attention in many fields such as drug delivery and ultrasound imaging, oil reservoirs either as sealing agents or means of mobility reduction and CO2 sequestration. All of these applications involve microbubble flow thorough capillary environments. This study offers a better understanding of microbubbles’ flow behavior in capillary tubes to provide a fundamental understanding of their flow in capillary environments. Stabilized microbubbles have been injected to a capillary tube in which the pressure drop of the flow has been monitored by a differential pressure transducer. To calculate viscosity, theoretical viscosity equations have then been applied to the pressure drop. Besides, the pressure drop was also used to determine wall friction factor. The effect of capillary tube diameter, capillary tube length, quality of microbubbles and flow rate on the viscosity and wall friction factor of the mixture has been assessed. The data was then used to develop a correlation to regenerate experimental viscosity data of microbubbles, which represents the experimental viscosity data with an absolute average relative deviation (AARD) less than 1.3 %. It was also found that friction factor of microbubble have a linear relationship with non-Newtonian Reynolds number.
Environmental Geometry Aligns the Hippocampal Map during Spatial Reorientation
Creators: name: Keinath, Alex T
name: Julian, Joshua B
name: Epstein, Russell A
name: Muzzio, Isabel A
Publisher: name: University of Illinois at Chicago
Year: 2023
Subjects: Uncategorized

description: When a navigator's internal sense of direction is disrupted, she must rely on external cues to regain her bearings, a process termed spatial reorientation. Extensive research has demonstrated that the geometric shape of the environment exerts powerful control over reorientation behavior, but the neural and cognitive mechanisms underlying this phenomenon are not well understood. Whereas some theories claim that geometry controls behavior through an allocentric mechanism potentially tied to the hippocampus, others postulate that disoriented navigators reach their goals by using an egocentric view-matching strategy. To resolve this debate, we characterized hippocampal representations during reorientation. We first recorded from CA1 cells as disoriented mice foraged in chambers of various shapes. We found that the alignment of the recovered hippocampal map was determined by the geometry of the chamber, but not by nongeometric cues, even when these cues could be used to disambiguate geometric ambiguities. We then recorded hippocampal activity as disoriented mice performed a classical goal-directed spatial memory task in a rectangular chamber. Again, we found that the recovered hippocampal map aligned solely to the chamber geometry. Critically, we also found a strong correspondence between the hippocampal map alignment and the animal's behavior, making it possible to predict the search location of the animal from neural responses on a trial-by-trial basis. Together, these results demonstrate that spatial reorientation involves the alignment of the hippocampal map to local geometry. We hypothesize that geometry may be an especially salient cue for reorientation because it is an inherently stable aspect of the environment.
(Self-)similar groups and the Farrell-Jones conjectures
Creators: name: Bartholdi, Laurent
Publisher: name: arXiv
Year: 2011
Subjects: subject: K-Theory and Homology (math.KT)
subject: Group Theory (math.GR)
subject: FOS: Mathematics

description: We show that contracting self-similar groups satisfy the Farrell-Jones conjectures as soon as their universal contracting cover is non-positively curved. This applies in particular to bounded self-similar groups. We define, along the way, a general notion of contraction for groups acting on a rooted tree in a not necessarily self-similar manner.
description: 9 pages; new version corrects terminology and an erroneous claim about zero divisors
Offshore Petroleum Pollution and Compulsory Insurance: The Case of Ghana
Creators: name: Ayamdoo, Nelson
Publisher: name: Graduate Studies
Year: 2014
Subjects: subject: Plant Culture
subject: Law
subject: FOS: Law
subject: Energy

description: The exploration and exploitation of petroleum in the offshore creates the risk of accidental oil spills and other forms of pollution. In accordance with the polluter pays principle, the Ghanaian petroleum regime allocates the costs of offshore pollution cleanup to the responsible oil company. However, allocating pollution cleanup liability does not guarantee that funds will be available to cover the costs of cleanup unless there are mechanisms to ensure payment. Given that oil companies could become insolvent or judgment-proof and may fail to pay the costs of cleanup, the thesis argues for a pre-payment mechanism in the form of compulsory insurance to ensure that the polluter eventually pays. Such a requirement may also induce oil companies to adopt optimal care levels to prevent pollution. The thesis concludes that the proposal to institute a compulsory insurance scheme in Ghana’s upstream industry is appropriate and suggests measures to improve the proposed scheme.
Intermediate-mass-ratio black hole binaries II: Modeling Trajectories and Gravitational Waveforms
Creators: name: Nakano, Hiroyuki
name: Zlochower, Yosef
name: Lousto, Carlos O.
name: Campanelli, Manuela
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We revisit the scenario of small-mass-ratio (q) black-hole binaries; performing new, more accurate, simulations of mass ratios 10:1 and 100:1 for initially nonspinning black holes. We propose fitting functions for the trajectories of the two black holes as a function of time and mass ratio (in the range 1/100 < q < 1/10$) that combine aspects of post-Newtonian trajectories at smaller orbital frequencies and plunging geodesics at larger frequencies. We then use these trajectories to compute waveforms via black hole perturbation theory. Using the advanced LIGO noise curve, we see a match of ~99.5% for the leading (l,m)=(2,2) mode between the numerical relativity and perturbative waveforms. Nonleading modes have similarly high matches. We thus prove the feasibility of efficiently generating a bank of gravitational waveforms in the intermediate-mass-ratio regime using only a sparse set of full numerical simulations.
description: 23 pages, 35 figures, revtex4
MassChroQ: A versatile tool for mass spectrometry quantification
Creators: name: Valot, Benoît
name: Langella, Olivier
name: Nano, Edlira
name: Zivy, Michel
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Biological sciences
subject: FOS: Computer and information sciences

description: Recently, many software tools have been developed to perform quantification in LC-MS analyses. However, most of them are specific to either a quantification strategy (e.g. label-free or isotopic labelling) or a mass-spectrometry system (e.g. high or low resolution). In this context, we have developed MassChroQ, a versatile software that performs LC-MS data alignment and peptide quantification by peak area integration on extracted ion chromatograms. MassChroQ is suitable for quantification with or without labelling and is not limited to high resolution systems. Peptides of interest (for example all the identified peptides) can be determined automatically or manually by providing targeted m/z and retention time values. It can handle large experiments that include protein or peptide fractionation (as SDS-PAGE, 2D-LC). It is fully configurable. Every processing step is traceable, the produced data are in open standard format and its modularity allows easy integration into proteomic pipelines. The output results are ready for use in statistical analyses. Evaluation of MassChroQ on complex label-free data obtained from low and high resolution mass spectrometers showed low CVs for technical reproducibility (1.4%) and high coefficients of correlation to protein quantity (0.98). MassChroQ is freely available under the GNU General Public Licence v3.0 at http://pappso.inra.fr/bioinfo/masschroq/.
description: 23 pages, 8 figures
Quantum Geometry Phenomenology: Angle and Semiclassical States
Creators: name: Major, Seth A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The phenomenology for the deep spatial geometry of loop quantum gravity is discussed. In the context of a simple model of an atom of space, it is shown how purely combinatorial structures can affect observations. The angle operator is used to develop a model of angular corrections to local, continuum flat-space 3-geometries. The physical effects involve neither breaking of local Lorentz invariance nor Planck scale suppression, but rather reply on only the combinatorics of SU(2) recouping theory. Bhabha scattering is discussed as an example of how the effects might be observationally accessible.
description: 5 pages, slightly extended version of the contribution to the Loops'11 conference proceedings
Was sollen wir tun? Der Moai jenseits von Kunst und Ethnographie
Creators: name: Haas, Bruno
name: Muñoz, Diego
name: Schorch, Philipp
Publisher: name: Universität Regensburg
Year: 2023
Subjects: subject: 700 Künste, Bildende Kunst allgemein

description: Im Zusammenhang mit den Museumsdebatten und der problematischen Beziehung zwischen ethnographischen und kunsthistorischen Sammlungen, europäischen Kunstbewegungen und Kolonialismus stellt dieser Artikel eine Grundfrage: Was für „Objekte“ werden in diesen Debatten zum Gegenstand gemacht? Man kann diese Frage nicht ohne das Befragte beantworten, die „Objekte“ selbst, welche wir besser als „Dinge“ (Heidegger) bezeichnen. Der Artikel widmet sich der Befragung des Kopfes eines Moai, einer monolithischen menschlichen Figur aus Rapa Nui (Osterinsel), die sich heute im Louvre befindet. Unter Rückgriff auf die Methode der funktionalen Deixis werden in der Auseinandersetzung mit dem Moai Erkenntnisse über seine spezifische Funktionsweise als „Ding“ im sozialen Raum herausgearbeitet. Dabei wird zugleich deutlich, welchen Sinn die Aufstellung des Moai und analog auch anderer Dinge in Museen ergeben kann.
Supporting Information.docx
Creators: name: Morales Bayuelo, Alejandro
Publisher: name: figshare
Year: 2023
Subjects: Medicinal and biomolecular chemistry not elsewhere classified
Computational chemistry
Theoretical and computational chemistry not elsewhere classified

description: Supporting Information for the manuscript: Receptor-Based Pharmacophore Modelling of a series of ligands used as inhibitors of the SARS-CoV-2 virus by complementary theoretical approaches, molecular docking and reactivity descriptors. Alejandro Morales-Bayuelo1*, Jesús Sánchez-Márquez2,. 1 Grupo GENOMA, Escuela de Medicina, Universidad del Sinú-EBZ, Cartagena, Colombia. 2 Departamento de Química-Física, Facultad de Ciencias, Campus Universitario Río San Pedro, Universidad de Cádiz, Cádiz-Spain.
Proceedings of the 2nd Iberian Nuclear Astrophysics Meeting on Compact Stars
Creators: name: Perez-Garcia, M. A.
name: Pons, J.
name: Eds, C. Albertus
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: This volume contains most of the links to the presentations delivered at this international workshop. This meeting was the second in the series following the previous I Encuentro Ibérico de Compstar, held at the University of Coimbra, Portugal in 2010. The main purpose of this meeting was to strengthen the scientific collaboration between the participants of the Iberian and the rest of the southern European branches of the European Nuclear Astrophysics network, formerly, COMPSTAR. This ESF (European Science Foundation) supported network has been crucial in helping to make a broader audience for the the most interesting and relevant research lines being developed currently in Nuclear Astrophysics, especially related to the physics of neutron stars. The program of the meeting was tailored to theoretical descriptions of the physics of neutron stars although some input from experimental observers and other condensed matter and optics areas of interest was also included.
description: Journal of Physics: Conference Series Volume 342 (2012), Proceedings of the 2nd Iberian Nuclear Astrophysics Meeting on Compact Stars, 22-23 September 2011, Salamanca-Spain. Editors, M. A. Perez-Garcia, J. Pons and C. Albertus Editors