cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Selective transcriptional down-regulation of human rhinovirus-induced production of cxcl10 in airway epithelian cells via mek1 pathway effects on interferon regulatory factor-1
Creators: name: Zaheer, Raza Syed
Publisher: name: University of Calgary
Year: 2010

description: Bibliography: p. 187-225
description: Human rhinovirus (HRV) infections can trigger exacerbations of lower airway diseases. Infection of airway epithelial cells induces production of a number of pro-inflammatory chemokines that may exacerbate airway inflammation, including interferony-inducible protein of lOkDa (CXCLIO), a chemoattractant for type 1 lymphocytes and Natural Killer cells. Primary human bronchial epithelial (HBE) cells and the BEAS-2B human bronchial epithelial cell line were used to examine the role of the mitogen-activated protein kinase (MAPK) pathways in HRV-16-induced production of CXCLlO. Infection with HRV-16 induced the activation of the major MAPK pathways, including chronic activation of ERKl/2. Inhibitors of the MEKl/2 pathway, PD98059 and U0126, significantly enhanced HRV-16, but not interferon (IFN)-~, induced production of CXCLIO mRNA and protein. Inhibitor effects were not due to changes in cell viability or viral replication. Studies using siRNA revealed that knockdown of MEKl was primarily associated with the enhancement of HRV-16-induced CXCLlO production. Promoter construct studies revealed that PD98059 and UO 126 enhanced HR V -16-induced transcriptional activation of CXCLlO. Inhibitors of the MEKl/2 pathway did not alter NF-KB translocation and/or binding to the CXCLlO promoter. In contrast, inhibitors of the MEKl/2 pathway and siRNA knockdown of MEKl enhanced translocation and/or binding of HRV-16-induced IFN regulatory factor (IRF)-1 to the CXCLlO promoter. Further examination revealed that HRV -16 induced the expression of both IRF-1 mRN A and protein in a time-dependent manner. Both PD98059 and U0126 significantly enhanced HRV-16-induced IRF-1 mRNA levels in BEAS-2B and HBE, although IRF-1 protein expression was only enhanced in HBE. Using siRNA targeting IRF-1 , both HRV-16-induced IRF-1 expression and nuclear translocation and/or binding of IRF-1 to the CXCLlO promoter was substantially reduced. Knockdown of IRF-1 also led to a significant reduction in HRV-16-induced CXCLlO production, confirming that IRF-1 is directly involved in HRV-16-induced CXCLlO expression. Moreover, pronounced IRF- 1 knockdown abrogated the enhancement of CXCLlO normally induced by the loss of MEKl function. Phosphatase experiments indicate that IRF-1 binding to the CXCLlO promoter may not be dependent upon its phosphorylation state. In conclusion, these studies demonstrate that activation of MEKl selectively down-regulates HRV-16- induced expression of CXCLlO by modulating IRF-1 interactions with the gene promoter in human airway epithelial cells.
Theory of ultrafast quasiparticle dynamics in high-temperature superconductors: Pump fluence dependence
Creators: name: Tao, Jianmin
name: Prasankumar, Rohit P.
name: Chia, Elbert E. M.
name: Taylor, Antoinette J.
name: Zhu, Jian-Xin
Publisher: name: arXiv
Year: 2012
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We present a theory for the time-resolved optical spectroscopy of high-temperature superconductors at high excitation densities with strongly anisotropic electron-phonon coupling. A signature of the strong coupling between the out-of-plane, out-of-phase O buckling mode ($B_{1g}$) and electronic states near the antinode is observed as a higher-energy peak in the time-resolved optical conductivity and Raman spectra, while no evidence of the strong coupling between the in-plane Cu-O breathing mode and nodal electronic states is observed. More interestingly, it is observed that under appropriate conditions of pump fluence, this signature exhibits a re-entrant behavior with time delay, following the fate of the superconducting condensate.
description: 5 pages, 3 embedded eps figures, to appear in PRB
The feedback withholding bias : How and when evaluators deny constructive criticism to minority students
Creators: name: Croft, Alyssa
Publisher: name: University of British Columbia
Year: 2011

description: How can we learn from our mistakes if we’re unaware they exist? Past research has proposed that teachers’ preconceptions guide interactions with their students. Consequently, we believe negative stereotypes might lead evaluators to provide biased feedback to stigmatized students, particularly when they are giving this feedback directly to the students. The present research sought to distinguish whether non-stigmatized evaluators over-represent positive feedback or under-represent negative feedback on minority writing. We also explored the role of prejudice and motivations to control it, and a desire to protect stigmatized students as possible predictors of these biases. Across two studies, participants highlighted instances of good/bad writing in essays purportedly written by a White or a minority student (Study 1: Aboriginal; Study 2: Black). Results showed that although participants provided equivalent gestalt evaluations and positive feedback to both authors, they provided less negative feedback overall to a minority student author (Study 2). Furthermore, this feedback withholding bias was strongest among evaluators who were externally but not internally motivated to control their biases (Studies 1 & 2). Participants with these motivations also provided inflated global appraisals of minority student writing in an effort to maintain consistency after withholding negative feedback. These findings suggest that stigmatized students might sometimes fail to receive the criticism necessary to identify areas needing improvement, particularly when evaluators are concerned about appearing prejudiced. Implications for minority student motivation, learning and performance will be discussed. Potential future directions are suggested for reducing the feedback withholding bias via practical interventions.
Additional file 1 of How do women comply with cancer screenings? A study in four regions of France
Creators: name: Duchange, Nathalie
name: Poiseuil, Marie
name: Rollet, Quentin
name: Piette, Christine
name: Cosson, Mathilde
name: Quertier, Marie-Christine
name: Moutel, Grégoire
name: Darquy, Sylviane
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Biotechnology
subject: Cancer
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional File 1: Questionnaire sent to women aged 56 in four French departments
The Burden of Proof in Civil Litigation: A Simple Model of Mechanism Design
Creators: name: Sanchirico, Chris William
Publisher: name: Columbia University
Year: 1996
Subjects: subject: Economics
subject: Law
subject: FOS: Law

description: The existing literature on the burden of proof has sought the rule's raison d'etre solely within the court's problem of decision making under uncertainty. While this search has yielded many insights, it has been less successful in providing a compelling explanation for why uncertainty in the court's final assessment should act to the detriment of one party rather than the other. By viewing the problem as one of mechanism design, this paper provides one explanation for the asymmetry. A rule resembling the burden of proof emerges from the optimal design of a system if fact-finding tribunals in the presence of: (i) limited resources for the resolution of private disputes, and (ii) asymmetric information - as between the parties and the court - about the strength of cases prior to the court's having expended the resources necessary for a hearing. The paper shows that if the objective in designing a trial court system is accuracy of recovery granted, the "value" of having heard a case will depend in part on the certainty with which the court makes its final award. An optimally designed court system will then effectively filter-out "less valuable" cases by precommitting to a recovery policy in which plaintiffs recover nothing unless they prove their cases with a threshold degree of certainty.
Safety and Pharmacokinetics of a Tenofovir Alafenamide Fumarate-Emtricitabine based Oral Antiretroviral Regimen for Prevention of HIV Acquisition in Women: A Randomized Controlled Trial
Creators: name: Ju, Susan
name: McCallister, Scott
name: Rooney, James F.
name: Cochón, Leila
name: Chen, Beatrice A.
name: Brache, Vivian
name: McGowan, Ian
name: Cottrell, Mackenzie L.
name: Schwartz, Jill L.
name: Doncel, Gustavo F.
name: Thurman, Andrea R.
Publisher: name: Elsevier
Year: 2021

description:
BACKGROUND: Daily oral emtricitabine (FTC, F)/tenofovir disoproxil fumarate (TDF) combination is approved for HIV pre-exposure prophylaxis (PrEP) in men and women. Tenofovir alafenamide fumarate (TAF) is a newer, more potent prodrug of tenofovir (TFV), and in combination with FTC, has recently been approved for prevention of HIV through rectal transmission. METHODS: This Phase I, prospective, interventional, randomized study was conducted in three clinical sites: PROFAMILIA, Santo Domingo, Dominican Republic; University of Pittsburgh and Eastern Virginia Medical School. We assessed the multi-compartmental pharmacokinetics (primary outcome) and safety (secondary outcome) among HIV uninfected women randomized to F/TDF (200mg/300mg) or F/TAF (200mg/25mg; F/TAF25) (n=24) in a single dose phase (SDP) and F/TDF, F/TAF (200mg/10mg; F/TAF10), or F/TAF25 (n=75) in a multiple dose (14 daily doses) phase (MDP). We described PK parameters in plasma, peripheral blood mononuclear cells (PBMCs), and cervicovaginal (CV) and rectal fluids and tissues. ClinicalTrials.gov #NCT02904369, completed. FINDINGS: Recruitment for the study began on 5 October 2016. The first participant was enrolled on 6 October 2016 and the last participant completed the study 21 November 2017. PLASMA: TFV concentrations area under curve (AUC) were ~20 fold lower following F/TAF versus F/TDF. TFV-diphosphate (TFV-DP) AUC concentrations in PBMCs were 7-fold higher with F/TAF25 versus F/TDF. Median TFV-DP concentrations in vaginal tissue (4hours post last dose) were approximately 6-fold higher with F/TAF25 versus F/TDF. TFV and TFV-DP were lower with F/TAF versus F/TDF in rectal tissue. Concentrations of FTC and FTC-triphosphate (FTC-TP) were similar across matrices and treatment arms. Gastrointestinal adverse events (AEs) occurred more frequently in F/TDF users (44.0%) than in either F/TAF group (11.5 and 12.0%). INTERPRETATION: F/TAF was safe and well-tolerated. TFV-DP concentrations were higher in PBMCs and similar or higher (4h post dose) in female genital tract tissues for F/TAF versus F/TDF. High FTC and FTC-TP concentrations in all compartments support the potential of F/TAF as a new PrEP combination for women.
Measuring a cosmological distance-redshift relationship using only gravitational wave observations of binary neutron star coalescences
Creators: name: Messenger, Chris
name: Read, Jocelyn
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Detection of gravitational waves from the inspiral phase of binary neutron star coalescence will allow us to measure the effects of the tidal coupling in such systems. These effects will be measurable using 3rd generation gravitational wave detectors, e.g. the Einstein Telescope, which will be capable of detecting inspiralling binary neutron star systems out to redshift z=4. Tidal effects provide additional contributions to the phase evolution of the gravitational wave signal that break a degeneracy between the system's mass parameters and redshift and thereby allow the simultaneous measurement of both the effective distance and the redshift for individual sources. Using the population of O(10^3-10^7) detectable binary neutron star systems predicted for the Einstein Telescope the luminosity distance--redshift relation can be probed independently of the cosmological distance ladder and independently of electromagnetic observations. We present the results of a Fisher information analysis applied to waveforms assuming a subset of possible neutron star equations of state. We conclude that for our range of representative neutron star equations of state the redshift of such systems can be determined to an accuracy of 8-40% for z<1 and 9-65% for 1
description: 5 pages, 1 figure, submitted to Phys. Rev. Lett
title: Structure and Demographic Correlates of Individual Trait Responses to Emotions
Creators: name: Adams, Anita
Publisher: name: University of Kentucky Libraries
Year: 2020
Subjects: subject: FOS: Psychology

description: From a functionalist perspective, emotions inform people of their needs and influence responses to the environment. Responses to emotion encompass more than emotion regulation strategies. Individual differences emerge from the consistent way that people cope with their emotions, called trait responses to emotion (TRE). We hypothesized approach/avoidance and control/dyscontrol would characterize the dimensional structure of TRE and that dimensions would correlate with age, gender, and early life experiences. The present study developed a multidimensional model to explore TRE from a TurkPrime sample (N = 284). Participants completed a web-based battery of surveys with demographic, early life experience, and TRE questionnaires. Multi-dimensional scaling yielded 3 dimensions: approach, dyscontrol, and emotion engagement. Older participants had higher approach and dyscontrol. Female participants had higher dyscontrol and emotion engagement. Participants with less risky early life experiences had higher approach, and participants with riskier experiences had higher emotion engagement. Mapping the relationships of TRE constructs can establish their nomological net, and relationships to demographic characteristics can identify possible protective and risk factors for TRE development.
description: © 2020 Anita Adams
A story in color, at Notre Dame in Paris . . .
Creators: name: Tesi, Alessandra
Publisher: name: Columbia University
Year: 2003
Subjects: subject: Architecture
subject: FOS: Civil engineering

description: "I would like to talk to you about a triangle. The triangle joins three points: the water, the crime and the cathedral. I imagine it in the heart of Paris, on the island, the Île de la Cité. There is water all around. The Pont-Neuf joins the island to the rest of the city. The blood of the city pulses toward the heart. On the Pont-Neuf are firemen who use their hoses to make a mass of water explode into the Seine."
Type II Seesaw Dominance in Non-supersymmetric and Split Susy SO(10) and Proton Life Time
Creators: name: Mohapatra, R. N.
name: Parida, Mina K.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Recently type II seesaw dominance in a supersymmetric SO(10) framework has been found useful in explaining large solar and atmospheric mixing angles as well as larger values of $theta_{13}$ while unifying quark and lepton masses. An important question in these models is whether there exists consistency between coupling unification and type II seesaw dominance. Scenarios where this consistency can be demonstrated have been given in a SUSY framework. In this paper we give examples where type II dominance occurs in SO(10) models without supersymmetry but with additional TeV scale particles and also in models with split-supersummetry. Grand unification is realized in a two-step process via breaking of SO(10) to SU(5) and then to a TeV scale standard model supplemented by extra fields and an SU(5) Higgs multiplet ${15}_H$ at a scale about $10^{12}$ GeV to give type-II seesaw. The predictions for proton lifetime in these models are in the range $τ_p^0 = 2\times 10^{35}$ yrs. to $τ_p^0 = 6\times 10^{35}$ yrs.. A number of recent numerical fits to GUT-scale fermion masses can be accommodated within this model.
description: 7 pages LaTeX, 3 figures, related areas: hep-ex, hep-th, astro-ph; Reference added, typo corrected, version to appear in Physical Review D
Evidence Production, Adversarial Process, and the Private Instigation of Suits
Creators: name: Sanchirico, Chris William
Publisher: name: Columbia University
Year: 1997
Subjects: subject: Economics
subject: Law
subject: FOS: Law

description: A companion paper, Sanchirico (1997) introduces the concept of "endogenous cost evidence" in a model of single-agent, mandatory hearings. The current paper extends Sanchirico (1997) by adding multiple parties and allowing for the possibility that agents may choose both whether to attend the hearing and whether to compel others to attend. The paper's main contribution is its identification of a fundamental trade-off in civil law design. Essentially, there are two ways to create incentives via civil process: costly evidence production and reliance on opponent reports (a la the literature on correlated types). The drawback of costly evidence production is that evidence costs are a deadweight loss to the system. The drawback of relying on opponent reports is that attaining sufficient information may require holding hearings in many different circumstances and requiring the attendance of many ancillary parties, which can also be costly. We show that the optimal mix of these two types of implementation depends on the size of the "fixed costs" of hearings. This dependence on fixed costs may help explain a climacteric transformation in civil process that took place in England between 1750 and 1850.
MANUAL DE ORIENTAÇÕES DOS CUIDADOS DE ENFERMAGEM NO TRANSPORTE INTER-HOSPITALAR DO SAMU: PROTOCOLO DE REVISÃO DE ESCOPO
Creators: name: Carneiro, Francisca Das C. F.
name: De Nazaré De Souza Ribeiro, Maria
name: Diniz, Cleisiane Xavier
Publisher: name: Open Science Framework
Year: 2023
Subjects: subject: Medicine and Health Sciences

description: Mapear as publicações disponíveis quanto aos cuidados de enfermagem para o transporte inter - hospitalar no cenário mundial.
Investigation of chatter in micro milling operating
Creators: name: Rahnama, Ramin
Publisher: name: University of Calgary
Year: 2010

description: Bibliography: p. 127-138
description: There has been an increasing demand for fabricating miniature components in recent years. The application of micro parts in different fields, such as lab-on-chips, micro sensors and actuators, and biomedical implants, resulted in the development of various micro manufacturing methods. Micro mechanical machining is one of the newly developed techniques that has several benefits over conventional micro fabrication methods. Unlike in conventional photolithographic methods, micro mechanical machining can provide the required flexibility to fabricate complex 3D geometries out of different engineering materials utilizing miniature end mills. However, chatter instability is a major challenge in the development and commercialization of the micro milling operation. Chatter is a self-excited vibration that causes rough surface finish and dimensional inaccuracy. Although chatter in macro machining has been studied very well in past decades, the effect of micro milling forces, such as process damping and ploughing on chatter, have not been investigated yet. In order to investigate the chatter in high speed micro milling processes, this research extends current macro milling chatter models with the latest micro milling processes. Several contributions to the chatter investigation in micro milling operation are presented in this research. The effect of process damping to increase the stability at lower rotational speeds is investigated. Also the ploughing forces are considered on the chatter stability model in micro milling. Due to very high rotational speeds in micro milling operation, the dynamics and cutting coefficients are not constant. In order to tackle changing parameters, the robust chatter stability is developed which is based on the edge theorem to suppress chatter vibrations. The experimental tests have been performed to support the proposed model and simulation results.
Population dynamics and adaptation of pseudomonas aeruginose during chronic lung infection in cystic fibrosis
Creators: name: Norgaard-Gron, Jens Christian
Publisher: name: University of Calgary
Year: 2010

description: Bibliography: p. 147-174
description: Some pages are in colour.
description: Pseudomonas aeruginosa is the most frequently isolated organism from patients with cystic fibrosis. Colonization occurs in early childhood and persists throughout the lifetime of patients. During chronic airway infection, P. aeruginosa is generally thought to evolve into a chronic phenotype characterized by acquisition of a number of mutations that results in loss of virulence factors required for acute infection. However, P. aeruginosa cultured from sputum exhibits a wide range of colony morphologies and suggests that P. aeruginosa in chronic airway infection has an unexplored level of diversity. To examine the population dynamics of P. aeruginosa in CF airways, we monitored morphotypes isolated during periods of pulmonary exacerbation in four CF adult patients with quantitative and quantitative microbiology. Phenotypic profiling was carried out for P. aeruginosa virulence factors generally considered to be lost during chronic infection. Results from this study indicate that P. aeruginosa CF population is highly diverse and virulence factors are still present in chronic infection.
Behavioral game theory : towards a realistic representation of strategic behavior?
Creators: name: Devetag, Giovanna
Publisher: name: Columbia University
Year: 2004
Subjects: Organizational behavior
Economics

description: The domain of strategic interaction includes all those decision tasks in which the outcome of a decision depends on the decisions taken by a plurality of individuals, so that each individual must try to devise the most likely moves of the others in order to pursue the best course of action, knowing that all other actors are engaged in the same type of strategic thinking. Problems of strategic interaction in economics have been traditionally modelled using the formal language of game theory, first introduced by von Neumann and Morgenstern’s 1944 seminal book Theory of Games and Economic Behavior. Game theory subsequently developed into a highly formal mathematical language used to describe the behavior of hyperrational individuals in strategic contexts. Although born as a branch of applied mathematics and originally developed with the intention of making it the science of military conflict, its diffusion within economics has been extremely rapid, and related fields in the social sciences have recently begun to apply it to model behavior in a variety of social settings.
Diabolical appearances in late antiquity : the case of exorcism
Creators: name: Lunn-Rockliffe, Sophie
Publisher: name: Columbia University
Year: 2006
Subjects: Religion
History
Bible

description: This paper investigates the reasons why new images of the devil were introduced in the church, rather than seek reasons for explaining their previous non-existence. When one goes demon hunting in Christian art it is possible to find the presence of the Devil and his minions, but in surprising, and often subtly suggestive forms. The Devil’s presence is implied and required, if not depicted, in scriptural scenes of exorcism and temptation.
Large current noise in nanoelectromechanical systems close to continuous mechanical instabilities
Creators: name: Brüggemann, Jochen
name: Weick, Guillaume
name: Pistolesi, Fabio
name: von Oppen, Felix
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate the current noise of nanoelectromechanical systems close to a continuous mechanical instability. In the vicinity of the latter, the vibrational frequency of the nanomechanical system vanishes, rendering the system very sensitive to charge fluctuations and, hence, resulting in very large (super-Poissonian) current noise. Specifically, we consider a suspended single-electron transistor close to the Euler buckling instability. We show that such a system exhibits an exponential enhancement of the current noise when approaching the Euler instability which we explain in terms of telegraph noise.
description: 11 pages, 12 figures; v2: minor changes, published version
title: Zasada odpowiedzialności odszkodowawczej za szkodę spowodowaną nieprawidłowym przetwarzaniem danych osobowych (art. 82 RODO)
Creators: name: Strugała, Radosław
Publisher: name: E-Wydawnictwo. Prawnicza i Ekonomiczna Biblioteka Cyfrowa. Wydział Prawa, Administracji i Ekonomii Uniwersytetu Wrocławskiego
Year: 2019

description: Opracowanie dotyczy odpowiedzialności odszkodowawczej uregulowanej w art. 82 RODO. Podstawowym problemem poruszonym w opracowaniu jest kwestia zasady tej odpowiedzialności. Jak się bowiem wydaje, wbrew użytemu w polskiej wersji językowej pojęciu winy, odpowiedzialność tę należy uznać za niezależną od winy.
title: ETHANOL SUSTAINS PHOSPHORYLATED TAU PROTEIN IMMUNOFLUORESCENCE IN THE CULTURED NEONATAL RAT HIPPOCAMPUS
title: IMPLICATIONS FOR FETAL ALCOHOL SPECTRUM DISORDERS
titleType: Subtitle
Creators: name: Bailey, Caleb
Publisher: name: University of Kentucky Libraries
Year: 2020
Subjects: subject: FOS: Psychology

description: Fetal Alcohol Spectrum Disorders (FASDs) are comprised of developmental, behavioral, and cognitive abnormalities caused by prenatal alcohol exposure, affecting an estimated 2%-5% of childrenand costing up to $4 billion annually in the United States alone. Although some behavioral therapies can help, the biochemical mechanisms that underpin FASDs need further elucidation for development of more efficacious therapeutics. The tau protein modulates cytoskeletal structure in neurons, and thereby plays an integral role in proper development and function of the central nervous system, but its function is altered by its phosphorylation state, such that increased phosphorylation reduces tau protein function. The tau protein is highly phosphorylated at birth but becomes dephosphorylated during structural maturation. Aberrant tau hyperphosphorylation is cardinal of neurodegenerative diseases, but less is known about its role in neurodevelopmental disorders, like FASD. In the neonatal rat model of organotypic hippocampal slice culture, tau phosphorylation decremented in all measured regions of the control hippocampus across 24 days in vitro, but tau hyperphosphorylation was sustained in all regions except the CA3 in hippocampal slices that were exposed to alcohol. Future research should investigate the functional, behavioral, and cognitive relevance of hyperphosphorylated tau protein with regard to FASDs to identify potential therapeutics.
description: © 2020 Caleb Seth Bailey
The face of privacy: an exploratory study of young and older facebook users
Creators: name: Turley, Nathan William
Publisher: name: University of Calgary
Year: 2010

description: Bibliography: p. 125-133
description: Just as the Internet has taken a prominent place in social life, so has the sociological study of social network sites. The objective of this study is to discern the similarities and differences between young and older Facebook users along the lines of privacy, usage, online friends, and impression management. To explore this topic, participant observation, semi-structured interviewing, and an exploration of Facebook in the media and everyday life was conducted. It was found that Facebook establishes new understandings of privacy, ways of socializing, making friends, and presenting oneself to others. This study contributes to sociological research on the Internet, privacy, and impression management. By examining Facebook, this research also gives a voice to older adults who exist in an environment often associated with the young: social network sites.
Near-horizon dynamics of particle in extreme Reissner-Nordström and Clément-Gal'tsov black hole backgrounds: action-angle variables
Creators: name: Saghatelian, Armen
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We analyze the periodic motion in the conformal mechanics describing the particles moving near the horizon of extreme Reissner-Nordström and axion-dilaton (Clément-Gal'tsov) black holes. For this purpose we extract the (two-dimensional) compact ("angular") parts of these systems and construct their action-angle variables. In the first case we get the well-known spherical Landau problem, which possesses hidden $so(3)$ symmetry, while in the latter case the system does not have hidden constant of motion. In both cases we indicate the existence of "critical points", separating the regions of periodic motions with qualitatively different properties.
description: 7 pages. arXiv admin note: text overlap with arXiv:1108.3394
AN EMPIRICAL STUDY OF TRUST & SAFETY ENGINEERING IN OPEN-SOURCE SOCIAL MEDIA PLATFORMS
Creators: name: Cramer, Geoffrey William
Publisher: name: Purdue University Graduate School
Year: 2023
Subjects: Empirical software engineering

description: Social Media Platforms (SMPs) are used by almost 60% of the global population. Along with the ubiquity of SMPs, there are increasing Trust & Safety (T&S) risks that expose users to spam, harassment, abuse, and other harmful content online. T&S Engineering is an emerging area of software engineering striving to mitigate these risks. This study provides the first step in understanding this form of software engineering. This study examines how T&S Engineering is practiced by SMP engineers. I studied two open-source (OSS) SMPs, Mastodon and Diaspora, which comprise 89% of the 9.6 million OSS SMP accounts. I focused on the T&S design process by analyzing T&S discussions within 60 GitHub issues. I applied a T&S discussion model to taxonomize the T&S risks, T&S engineering patterns, and resolution rationales. I found that T&S issues persist throughout a platform’s lifetime, they are difficult to resolve, and engineers favor reactive treatments. To integrate findings, I mapped T&S engineering patterns onto a gen- eral model of SMPs. My findings give T&S engineers a systematic understanding of their T&S risk treatment options. I conclude with future directions to study and improve T&S Engineering, spanning software design, decision-making, and validation.
First spectro-interferometric survey of Be stars I. Observations and constraints on the disks geometry and kinematics
Creators: name: Meilland, Anthony
name: Millour, Florentin
name: Kanaan, Samer
name: Stee, Philippe
name: Petrov, Romain G.
name: Hofmann, Karl-Heinz
name: Natta, Antonella
name: Perraut, Karine
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Context. Classical Be stars are hot non-supergiant stars surrounded by a gaseous circumstellar disk that is responsible for the observed infrared-excess and emission lines. The phenomena involved in the disk formation still remain highly debated. Aims. To progress in the understanding of the physical process or processes responsible for the mass ejections and test the hypothesis that they depend on the stellar parameters, we initiated a survey on the circumstellar environment of the brightest Be stars. Methods. To achieve this goal, we used spectro-interferometry, the only technique that combines high spectral (R=12000) and high spatial ($θ_{\rm min}$=4\,mas) resolutions. Observations were carried out at the Paranal observatory with the VLTI/AMBER instrument. We concentrated our observations on the Br$γ$ emission line to be able to study the kinematics within the circumstellar disk. Our sample is composed of eight bright classical Be stars : $α$ Col, $κ$ CMa, $ω$ Car, p Car, $δ$ Cen, $μ$ Cen, $α$ Ara, and \textit{o} Aqr. Results. We managed to determine the disk extension in the line and the nearby continuum for most targets. We also constrained the disk kinematics, showing that it is dominated by rotation with a rotation law close to the Keplerian one. Our survey also suggests that these stars are rotating at a mean velocity of V/V$_{\rm c}$\,=\,0.82\,$\pm$\,0.08. This corresponds to a rotational rate of $Ω/Ω_{\rm c}$\,=\,0.95\,$\pm$\,0.02 Conclusions. We did not detect any correlation between the stellar parameters and the structure of the circumstellar environment. Moreover, it seems that a simple model of a geometrically thin Keplerian disk can explain most of our spectrally resolved K-band data. Nevertheless, some small departures from this model have been detected for at least two objects (i.e, $κ$ CMa and $α$ Col). Finally, our Be stars sample suggests that rotation is the main physical process driving the mass-ejection. Nevertheless, smaller effects from other mechanisms have to be taken into account to fully explain how the residual gravity is compensated.
description: Astronomy and Astrophysics (2011) Accepted
(Re)escrituras de Caperucita Roja en la literatura hispánica de la segunda mitad del siglo XX que desafían normas sociales coercitivas
Creators: name: Vekić, Tiana
Publisher: name: University of British Columbia
Year: 2011

description: This thesis analyzes a selection of Hispanic narratives from the second half of the 20th century that (re)write the story of Little Red Riding Hood in order to challenge coercive social norms (such as those pertaining to conservative sexuality, female development, and political and military oppression) and restore the autonomy of the individual. Parting from a socio-historic interpretation of Little Red Riding Hood, and defining it as a symbolic abstraction of socio-historic realities, the thesis analyzes in a comparative manner how various Hispanic authors (Juan Marsé, Manuel Vázquez Montalbán, Carmen Martín Gaite, and Manlio Argueta) have used Little Red Riding Hood to highlight oppressive norms in a particular social order and propose ways of transforming it.
Credit ratings failures : causes and policy options
Creators: name: Pagano, Marco
name: Volpin, Paolo
Publisher: name: Columbia University
Year: 2009
Subjects: Finance
Commerce

description: This paper examines the role of credit rating agencies in the subprime crisis, which was at the outset of the ongoing financial turmoil. The focus of the paper is on two aspects that contributed to the boom and bust of the market for asset-backed securities: rating inflation and coarse information disclosure. The paper discusses how regulation can be designed to mitigate these problems in the future. The suggestion is that regulators should require rating agencies to be paid by investors rather than by issuers (or at least constrain the way they are paid by issuers) and force greater disclosure of information about the underlying pool of securities.
Kinetic roughening, global quantities, and fluctuation-dissipation relations
Creators: name: Chou, Yen-Liang
name: Pleimling, Michel
Publisher: name: arXiv
Year: 2011
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Growth processes and interface fluctuations can be studied through the properties of global quantities. We here discuss a global quantity that not only captures better the roughness of an interface than the widely studied surface width, but that is also directly conjugate to an experimentally accessible parameter, thereby allowing us to study in a consistent way the global response of the system to a global change of external conditions. Exploiting the full analyticity of the linear Edwards-Wilkinson and Mullins-Herring equations, we study in detail various two-time functions related to that quantity. This quantity fulfills the fluctuation-dissipation theorem when considering steady-state equilibrium fluctuations.
description: 13 pages, 5 figures
An approximate dynamic programming approach for coordinated charging control at vehicle-to-grid aggregator
Creators: name: Xu, Jinbiao
Publisher: name: University of British Columbia
Year: 2011

description: A vehicle-to-grid (V2G) aggregator is an agent between the power grid and the plug-in hybrid electrical vehicles (PHEVs). In this thesis, we study the coordinated charging control at a V2G aggregator. The coordinated charging control brings the advantages of minimizing the charging cost and reducing the power losses, by coordinating the control sequences of a group of PHEVs. On one hand, the lower cost of charging gives the users of PHEVs an incentive to cooperate. On the other hand, with an increasing popularity of PHEVs, the impact on the power distribution grid such as power losses should be of concern to the aggregator. To this end, we investigate the tradeoffs between reducing the charging cost and the power losses. We formulate the coordinated charging control as a dynamic programming problem, given the planned schedules of all the vehicles at an aggregator. As an inherent property of a V2G aggregator, we enable bidirectional electric power flows between PHEVs and the power grid. Due to the curse of dimensionality, we apply an approximate dynamic programming approach to decrease the dimensionality of both the state space and control space. Simulation results show that coordinated charging control can reduce both the total charging cost and the aggregated power losses significantly, compared with the uncoordinated control where every vehicle starts charging as soon as it is plugged in. We also show that the charging control with bidirectional power flows outperforms remarkably the one with unidirectional flows.
Fundamental Solutions to $\Box_b$ on Certain Quadrics
Creators: name: Boggess, Albert
name: Raich, Andrew
Publisher: name: arXiv
Year: 2011
Subjects: subject: Complex Variables (math.CV)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 32W10, 33C45, 43A80, 35H20

description: The purpose of this article is to expand the number of examples for which the complex Green operator, that is, the fundamental solution to the Kohn Laplacian, can be computed. We use the Lie group structure of quadric submanifolds of $\mathbb C^n\times\mathbb C^m$ and the group Fourier transform to reduce the $\Box_b$ equation to ones that can be solved using modified Hermite functions. We use Mehler's formula and investigate 1) quadric hypersurfaces, where the eigenvalues of the Levi form are not identical (including possibly zero eigenvalues), and 2) the canonical quadrics in $\mathbb C^4$ of codimension two.
description: 20 pages
The archaeology of Anthropocene rivers: water management and landscape change in 'Gold Rush' Australia
Creators: name: Lawrence, Susan
name: Davies, Peter
name: Turnbull, Jodi
Publisher: name: La Trobe
Year: 2023
Subjects: classificationCode: 430107
subject: Historical archaeology (incl. industrial archaeology)
classificationCode: 4301
subject: Archaeology

description: Future scientists seeking evidence of the Anthropocene on a planetary scale will find a series of structurally similar deposits dating to within the same few thousand years at multiple locations around the world. It will be evident that they were produced by a global human drive to exploit the Earth's mineral wealth. The impact and the evidence left by this phenomenon in the 'Gold Rush' region of Victoria, Australia are particularly clear. Using a multi-scalar approach, the authors examine the extent and significance of changes resulting from water management and mining processes, which, in some cases, resulted in the creation of new landscapes far beyond the mining district.
Leucospis carinifera KRIECHBAUMER 1894
Creators: name: Madl, Michael
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Leucospidae
Leucospis
Leucospis carinifera

description: Leucospis carinifera KRIECHBAUMER, 1894
Leucospis carinifera KRIECHBAUMER, 1894: BOUČEK 1974a: 103 (key), 107 (figs 134, 135), 119 (tax., Djibouti).
Leucospis carinifera KRIECHBAUMER, 1894: MADL & SCHWARZ 2012: 1223 (cat. Afr. reg.).
D i s t r i b u t i o n: Djibouti.
Leucospis carinifera is recorded also from Ethiopia, Kenya, Malawi, Mozambique, Namibia, South Africa, Sudan, Tanzania and Zimbabwe.
description: Published as part of Madl, Michael, 2018, A preliminary catalogue of the Hymenoptera (Insecta) of the Republic of Djibouti, pp. 907-967 in Linzer biologische Beiträge 50 (2) on pages 912-913, DOI: 10.5281/zenodo.3776452
GAMIFIKATSIYA VA MAXSUS EHTIYOJLI O'QUVCHILAR UCHUN MOSLASHTIRILGAN O'YIN TEXNOLOGIYALARI
Creators: name: Tasbayeva, Gulbaxar
name: Klishbaeva, Guljan
Publisher: name: Zenodo
Year: 2025

description: Ushbu maqolada gamifikatsiya natijalari va maxsus ruxsat etilgan o'quvchilar uchun moslashtirilgan o'yin texnologiyalarining ahamiyati tahlili. O'yin jarayonining ta'limga integratsiyasi, motivatsiyani kuzatish, individual tarzda mos keladigan ta'lim muhitini ko'rib chiqish. Maxsus ishlab chiqilgan bolalar uchun maxsus o'quv platformalari va ilovalarning qabul qilish, ijtimoiy va kognitiv ishlab chiqarishga ta'siri muhokama qilinadi. Hisobot manbagamifikatsiya qilishning in ta'limda qo'lyuziv yordamini o'z ichiga oladi.
The relativistic pulsar-white dwarf binary PSR J1738+0333 I. Mass determination and evolutionary history
Creators: name: Antoniadis, J.
name: van Kerkwijk, M. H.
name: Koester, D.
name: Freire, P. C. C.
name: Wex, N.
name: Tauris, T. M.
name: Kramer, M.
name: Bassa, C. G.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: PSR J1738+0333 is one of the four millisecond pulsars known to be orbited by a white dwarf companion bright enough for optical spectroscopy. Of these, it has the shortest orbital period, making it especially interesting for a range of astrophysical and gravity related questions. We present a spectroscopic and photometric study of the white dwarf companion and infer its radial velocity curve, effective temperature, surface gravity and luminosity. We find that the white dwarf has properties consistent with those of low-mass white dwarfs with thick hydrogen envelopes, and use the corresponding mass-radius relation to infer its mass; M_WD = 0.181 +/- +0.007/-0.005 solar masses. Combined with the mass ratio q=8.1 +/- 0.2 inferred from the radial velocities and the precise pulsar timing ephemeris, the neutron star mass is constrained to M_PSR = 1.47 +/- +0.07/-0.06 solar masses. Contrary to expectations, the latter is only slightly above the Chandrasekhar limit. We find that, even if the birth mass of the neutron star was only 1.20 solar masses, more than 60% of the matter that left the surface of the white dwarf progenitor escaped the system. The accurate determination of the component masses transforms this system in a laboratory for fundamental physics by constraining the orbital decay predicted by general relativity. Currently, the agreement is within 1 sigma of the observed decay. Further radio timing observations will allow precise tests of white dwarf models, assuming the validity of general relativity.
description: Article published in Monthly Notices of the Royal Astronomical Society v.3: Updated references
Computation of anomalous scaling exponents of turbulence from self-similar instanton dynamics
Creators: name: Mailybaev, Alexei A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We show that multiscaling properties of developed turbulence in shell models, which lead to anomalous scaling exponents in the inertial range, are determined exclusively by instanton dynamics. Instantons represent correlated extreme events localized in space-time, whose structure is described by self-similar statistics with a single universal scaling exponent. We show that anomalous scaling exponents appear due to the process of instanton creation. A simplified model of instanton creation is suggested, which adequately describes this anomaly.
description: 4 pages, 5 figures
Derivation of quantum work equalities using quantum Feynman-Kac formula
Creators: name: Liu, Fei
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: On the basis of a quantum mechanical analogue of the famous Feynman-Kac formula and the Kolmogorov picture, we present a novel method to derive nonequilibrium work equalities for isolated quantum systems, which include the Jarzynski equality and Bochkov-Kuzovlev equality. Compared with previous methods in the literature, our method shows higher similarity in form to that deriving the classical fluctuation relations, which would give important insight when exploring new quantum fluctuation relations.
description: 5 pages
Locally Unextendible Non-Maximally Entangled Basis
Creators: name: Chakrabarty, Indranil
name: Agrawal, Pankaj
name: Pati, Arun K
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We introduce the concept of the locally unextendible non-maximally entangled basis (LUNMEB) in $H^d \bigotimes H^d$. It is shown that such a basis consists of $d$ orthogonal vectors for a non-maximally entangled state. However, there can be a maximum of $(d-1)^2$ orthogonal vectors for non-maximally entangled state if it is maximally entangled in $(d-1)$ dimensional subspace. Such a basis plays an important role in determining the number of classical bits that one can send in a superdense coding protocol using a non-maximally entangled state as a resource. By constructing appropriate POVM operators, we find that the number of classical bits one can transmit using a non-maximally entangled state as a resource is $(1+p_0\frac{d}{d-1})\log d$, where $p_0$ is the smallest Schmidt coefficient. However, when the state is maximally entangled in its subspace then one can send up to $2\log (d-1) $ bits. We also find that for $d= 3$, former may be more suitable for the superdense coding.
description: 7 pages, 1 figure, Accepted for publication in Quantum Information and Computation
The Archaeology of Water on the Victorian Goldfields
Creators: name: Lawrence, Susan
name: Davies, Peter
name: Turnbull, Jodi
Publisher: name: La Trobe
Year: 2023
Subjects: classificationCode: 4303
subject: Historical studies
classificationCode: 4301
subject: Archaeology

description: Water played a crucial role in gold mining in the Australian colony of Victoria during the nineteenth century. Recent archaeological research has identified extensive surviving evidence of water supply networks, industrial applications of water and downstream pollution. The integration of this physical evidence with Google Earth, LiDAR imagery and historical maps in GIS reveals how the use of water in mining continues to shape modern landscapes. Lawrence, S., Davies, P. & Turnbull, J. The Archaeology of Water on the Victorian Goldfields. Int J Histor Archaeol 21, 49–65 (2017). https://doi.org/10.1007/s10761-016-0330-0