cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
How well do STARLAB and NBODY compare? II: Hardware and accuracy
Creators: name: Anders, P.
name: Baumgardt, H.
name: Gaburov, E.
name: Zwart, S. Portegies
Publisher: name: arXiv
Year: 2012
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Most recent progress in understanding the dynamical evolution of star clusters relies on direct N-body simulations. Owing to the computational demands, and the desire to model more complex and more massive star clusters, hardware calculational accelerators, such as GRAPE special-purpose hardware or, more recently, GPUs (i.e. graphics cards), are generally utilised. In addition, simulations can be accelerated by adjusting parameters determining the calculation accuracy (i.e. changing the internal simulation time step used for each star). We extend our previous thorough comparison (Anders et al. 2009) of basic quantities as derived from simulations performed either with STARLAB/KIRA or NBODY6. Here we focus on differences arising from using different hardware accelerations (including the increasingly popular graphic card accelerations/GPUs) and different calculation accuracy settings. We use the large number of star cluster models (for a fixed stellar mass function, without stellar/binary evolution, primordial binaries, external tidal fields etc) already used in the previous paper, evolve them with STARLAB/KIRA (and NBODY6, where required), analyse them in a consistent way and compare the averaged results quantitatively. For this quantitative comparison, we apply the bootstrap algorithm for functional dependencies developed in our previous study. In general we find very high comparability of the simulation results, independent of the used computer hardware (including the hardware accelerators) and the used N-body code. For the tested accuracy settings we find that for reduced accuracy (i.e. time step at least a factor 2.5 larger than the standard setting) most simulation results deviate significantly from the results using standard settings. The remaining deviations are comprehensible and explicable.
description: 14 pages incl. 3 pages with figures and 4 pages of tables (analysis results), MNRAS in press
3D Model Atmospheres of Red Giant Stars
Creators: name: Ludwig, Hans-Gunter
name: Steffen, Matthias
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We provide a brief overview of the modelling of the atmospheres of red giant stars with the 3D radiation-hydrodynamics code CO5BOLD. We emphasize aspects where 3D modelling provides additional insight beyond standard hydrostatic 1D models, and comment on present modelling challenges.
description: Proc. of the workshop "Red Giants as Probes of the Structure and Evolution of the Milky Way" (Roma, 15-17 Nov 2010), Astrophysics and Space Science Proceedings, ISBN 978-3-642-18417-8 (eds. A. Miglio, J. Montalban, A. Noels). Part of RedGiantsMilkyWay/2011/ proceedings available at http://arxiv.org/html/1108.4406v1
A precision study of two eclipsing white dwarf plus M dwarf binaries
Creators: name: Parsons, S. G.
name: Marsh, T. R.
name: Gänsicke, B. T.
name: Rebassa-Mansergas, A.
name: Dhillon, V. S.
name: Littlefair, S. P.
name: Copperwheat, C. M.
name: Hickman, R. D. G.
name: Burleigh, M. R.
name: Kerry, P.
name: Koester, D.
name: Gómez-Morán, A. Nebot
name: Pyrzas, S.
name: Savoury, C. D. J.
name: Schreiber, M. R.
name: Schmidtobreick, L.
name: Schwope, A. D.
name: Steele, P. R.
name: Tappert, C.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We use a combination of X-shooter spectroscopy, ULTRACAM high-speed photometry and SOFI near-infrared photometry to measure the masses and radii of both components of the eclipsing post common envelope binaries SDSS J1212-0123 and GK Vir. For both systems we measure the gravitational redshift of the white dwarf and combine it with light curve model fits to determine the inclinations, masses and radii. For SDSS J1212-0123 we find a white dwarf mass and radius of 0.439 +/- 0.002 Msun and 0.0168 +/- 0.0003 Rsun, and a secondary star mass and radius of 0.273 +/- 0.002 Msun and 0.306 +/- 0.007 Rsun. For GK Vir we find a white dwarf mass and radius of 0.564 +/- 0.014 Msun and 0.0170 +/- 0.0004 Rsun, and a secondary star mass and radius of 0.116 +/- 0.003 Msun and 0.155 +/- 0.003 Rsun. The mass and radius of the white dwarf in GK Vir are consistent with evolutionary models for a 50,000K carbon-oxygen core white dwarf. Although the mass and radius of the white dwarf in SDSS J1212-0123 are consistent with carbon-oxygen core models, evolutionary models imply that a white dwarf with such a low mass and in a short period binary must have a helium core. The mass and radius measurements are consistent with helium core models but only if the white dwarf has a very thin hydrogen envelope, which has not been predicted by evolutionary models. The mass and radius of the secondary star in GK Vir are consistent with evolutionary models after correcting for the effects of irradiation by the white dwarf. The secondary star in SDSS J1212-0123 has a radius ~9 per cent larger than predicted.
description: 21 pages, 14 Figures and 11 Tables. Accepted for publication in MNRAS
Auxiliary Field quantum Monte Carlo for Strongly Paired Fermions
Creators: name: Carlson, J.
name: Gandolfi, Stefano
name: Schmidt, Kevin E.
name: Zhang, Shiwei
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We demonstrate that the inclusion of a BCS importance function dramatically increases the efficiency of the auxiliary field method for strong pairing. We calculate the ground-state energy of an unpolarized fermi gas at unitarity with up to 66 particles and lattices of up to $27^3$ sites. The method has no fermion sign problem, and an accurate result is obtained for the universal parameter $ξ$. Several different forms of the kinetic energy adjusted to the unitary limit but with different effective ranges extrapolate to the same continuum limit within error bars. The finite effective range results for different interactions are consistent with a linear term proportional to the Fermi momentum times the effective range. The new method described herein will have many applications in superfluid cold atom systems and in both electronic and nuclear structures when pairing is important.
description: 5 pages, 2 figures
Early Metal Metallocenium Hydridoborate Catalysts for Carbon Dioxide Hydrosilation
Creators: name: Chiu, Frederick Sin Nang
Publisher: name: Graduate Studies
Year: 2014
Subjects: subject: Chemistry--Inorganic
subject: Catalysis
subject: Lewis acid
subject: Carbon Dioxide
subject: hydrosilation
subject: scandium
subject: Titanium
subject: vanadium

description: A series of permethylmetallocenium(III) hydridotris(pentafluorophenyl)borate complexes was synthesized and investigated as CO2 hydrosilation catalysts in tandem with a B(C6F5)3 co-catalyst. The increasing d electron count across the series of metals studied (ScIII: d0, TiIII: d1, VIII: d2) gave rise to contrasting kinetic behaviours as catalysts. The Sc- and Ti-based systems demonstrated sigmoidal hydrosilane consumption characteristic of two operative catalytic pathways. In particular, the activation of the secondary, more active catalytic pathway was attributed to the build-up of the hydrosilation intermediate, bis(triethylsiloxy)methane in the initial stages of the reaction. This acetal species is capable of binding to the ScIII and TiIII centers, resulting in the observed reactivity. In the VIII system, the electronic configuration precludes coordination of this acetal intermediate, resulting in the operation of only the initial pathway. In addition, carbonyl poisoning of the VIII center allowed for insights to the role of the metal catalyst in the dual catalyst system.
Forest and hydrogeomorphic processes in shallow landslide initiation zones
Creators: name: Sakals, Matthew Egan
Publisher: name: University of British Columbia
Year: 2010

description: Following a shallow landslide, hydrogeomorphic processes in the initiation zone respond to the discontinuities of soil depth, topographic expression, and hydrologic and forest conditions. The shallow landslides occurring at the study sites are episodic erosion processes punctuating periods marked by the deposition of hillslope material. Recovery of soil depth and topographic expression occurs through small-scale processes that infill the failure area. Rates of small-scale redistribution of hillslope material decline with time and are attributable to both vegetation re-establishment and diminished surface topographic variability. Understory forest vegetation in failure areas resemble the vegetation on adjacent undisturbed slopes within approximately 100 years of failure; re-establishment of the forest canopy may require several centuries longer. Stochastic elements of the surrounding forests strongly affect soil accumulation through influences on material transport and deposition. The central tendency of soil accumulation approximates a sigmoid curve with the majority of accumulation occurring within 100 years of failure. Soil depth on adjacent hillslopes positively influences soil accumulation in failure areas, but repeated shallow landslides can deplete hillslope materials from the contributing area. The sediment balance of weathering, storage, and evacuation strongly influences future cycles of failure and recharge. The frequency of preferential flow pathways in shallow landslide initiation zones was found to be spatially variable with fewer preferential flow pathways in the infilled soils of failure areas; thus landslide occurrence and subsequent infilling may negatively influence future slope stability. As a result of this study, recommendations for future research are made regarding the effects of forests on the regime of small-scale material transport processes occurring after shallow landslides, on the spatial and temporal development of preferential flow pathways in shallow landslide initiation zones, and on the long-term stability of sites of shallow landslides.
Theoretical studies of 63Cu Knight shifts of the normal state of YBa2Cu3O7
Creators: name: Kuang, M. Q.
name: Wu, S. Y.
name: Zhang, Z. H.
name: Song, B. T.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The 63Cu Knight shifts and g factors for the normal state of YBa2Cu3O7 in tetragonal phase are theoretically studied in a uniform way from the high (fourth-) order perturbation formulas of these parameters for a 3d9 ion under tetragonally elongated octahedra. The calculations are quantitatively correlated with the local structure of the Cu2+(2) site in YBa2Cu3O7. The theoretical results show good agreement with the observed values, and the improvements are achieved by adopting fewer adjustable parameters as compared to the previous works. It is found that the significant anisotropy of the Knight shifts is mainly attributed to the anisotropy of the g factors due to the orbital interactions.
description: 5 pages
Noise spectroscopy of optical microcavity
Creators: name: Kozlov, G. G.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The intensity noise spectrum of the light passed through an optical microcavity is calculated with allowance for thermal fluctuations of its thickness. The spectrum thus obtained reveals a peak at the frequency of acoustic mode localized inside the microcavity and depends on the size of the illuminated area. The estimates of the noise magnitude show that it can be detected using the up-to-date noise spectroscopy technique.
description: 10 pages, 1 figure
The Influence of Images of Climate Change Causes, Consequences, and Solutions on the Relationships Between Pro-Environmental Motivation and Change in the Intentions to Engage in Pro-Environmental Behaviors: A Comparison of Motivational Frameworks
Creators: name: Dorville, Maxime
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2020
Subjects: Self-Determination Theory
Pro-Environmental Behaviors
Environmental Motivation
Environmental Messages
HABICE Model
Cognitive Dissonance

description: Some human actions are linked to the decline of the environment on a planetary scale. In order to motivate individuals to adopt pro-environmental behaviors (PEBs), it is important to understand how individuals react when exposed to persuasive messages. The goal of this program of research was to examine the influence of images of climate change causes, consequences, and solutions on the relationships between environmental motivation, psychological discomfort, discomfort compensation strategies, as well as changes in pro-environmental attitude and PEBs. In Study 1 (N = 199), I identified visual stimuli (pictures) depicting causes, consequences or solutions to global warming to be used in Study 2. Also, I examined the relationship between environmental motivation and competency on the perception of these pictures. The results indicated that the pictures depicting causes or consequences were perceived more negatively than pictures depicting solutions. In addition, findings showed that regardless of the individual’s perceived level of environmental competence and their type of motivation towards PEBs, individuals had a negative perception of pictures depicting causes and consequences to global warming as well as a positive perception of pictures related to solutions to global warming. In Study 2 (N = 312), I examined the relationships between environmental motivation, psychological discomfort, discomfort compensation strategies, as well as changes in pro-environmental attitude and PEBs following the exposition to images identified in Study 1. Three models based on Self-Determination Theory (SDT), Action-Based Model, and the Hierarchical Action-Based model of Inconsistency Compensation in the Environment (HABICE) domain were examined. The results indicated that exposure to pictures alone is not enough to generate a significant change in pro-environmental attitude or PEBs. The findings showed that the SDT model was best suited to explain the process leading to PEBs changes when exposed to pictures depicting causes of global warming. Finally, the results indicated that the HABICE model was best suited to explain changes in pro-environmental attitude when individuals are exposed to pictures depicting consequences. The HABICE was also a good model to explain the relationships among the different variables when individuals are exposed to pictures depicting solutions to global warming. Overall, this program of research contributed to both SDT and the HABICE models by supporting their conceptual framework.
Quantum measurement bounds beyond the uncertainty relations
Creators: name: Giovannetti, Vittorio
name: Lloyd, Seth
name: Maccone, Lorenzo
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We give a bound to the precision in the estimation of a parameter in terms of the expectation value of an observable. It is an extension of the Cramer-Rao inequality and of the Heisenberg uncertainty relation, where the estimation precision is typically bounded in terms of the variance of an observable.
description: 6 pages, 3 figures
Diaspora, Identity and the Canadian Media: The Case of the Second Polish Corps in World War Two and the Re-settlement of its Veterans in Alberta
Creators: name: Jaworska, Aldona
Publisher: name: Graduate Studies
Year: 2014
Subjects: subject: Mass Communications
subject: Polish War Veterans in Alberta
subject: Polish Second Army Corps
subject: 1947 Polish Resettlement Act
subject: Ethnic Identity
subject: Post-war II Canadian Newspapers
subject: Diaspora

description: In the few recent decades, the issue of identity formation has spurred major debates among scholars of various academic backgrounds and specializations, who examined the identity formation of individuals and groups. This thesis explores the process of identity formation in Polish ex-servicemen who chose to reside in Calgary after they fulfilled a two-year long farm work contract in Canada during the early post-WWII years. It examines how Canadian immigration policies and Canadian media impacted the treatment and the portrayal of the Polish ex-servicemen, and it compares their treatment with the portrayal of the returning Canadian veterans. This comparison of the two groups highlights the factors that went into the Polish veterans’ identity formation in this period. Based on a sample of newspaper articles printed in Canada and in Calgary, and interviews conducted with the Polish ex-servicemen, who chose to reside in Calgary after they fulfilled their contract of working on farms, the study examines the differences between media portrayal and self-portrayal in this group The study also examines the role of government policies as a factor in media representation of Polish veterans and how these policies influenced their place in Canadian society. The lingering results of this negative treatment and portrayal indicate the power of such factors to influence identity formation in this group right into the 21st century.
Being Kinky: Intimacy, Ethics, and the Self
Creators: name: LeBlanc, Christine
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2020
Subjects: Kink
BDSM
Stigma
Technologies of the Self
Ethical Intimacy
Intimacy
Foucault
Goffman

description: Kink has a long history of being condemned in Western society. Even though kink is prevalent in popular culture (and in many people’s bedrooms) it continues to be considered abnormal and associated with deviance. Through nine in-depth qualitative interviews, this thesis explores the experiences of kinksters with kink, their engagement with the kink community, and their negotiations of stigma in everyday life. These experiences are analyzed using Foucault’s theories on discourse and technologies of the self and Goffman’s conceptualization of stigma. The thesis found that while the social condemnation of kink has resulted in members of the kink community struggling to manage their identity as kinksters, they also find joy and a sense of belonging within the kink community. Moreover, through the kink community, kinksters learn to conceptualize and practice consent in a new way; one that is rooted in being an ethical subject. The thesis concludes with a call to challenge the normative tropes and stigmatic assumptions of deviance that continue to marginalize and oppress kinksters.
Development of Non-sequential Ray-tracing Software for Cosmic-ray Telescopes
Creators: name: Okumura, Akira
name: Hayashida, Masaaki
name: Katagiri, Hideaki
name: Saito, Takayuki
name: Vassiliev, Vladimir
Publisher: name: arXiv
Year: 2011
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We have developed non-sequential ray-tracing software which is aimed to be widely used, along with air- shower simulations, in the design of optical systems for cosmic-ray experiments. The code is based on the ROOT geometry library to provide a non-sequential photon tracking system, which is valuable when simulating refraction and multiple reflections. In addition to the basic ROOT classes, we have implemented new geometry ROOT classes so that users can flexibly define various geometries such as aspherical or Winston-cone type surfaces. We demonstrate the capabilities and performance of the software with examples of optical systems used in current and future experiments.
description: 4 pages, 6 figures, proceedings of the 32nd International Cosmic Ray Conference, Beijing, China (2011)
The three-loop form factor in N=4 super Yang-Mills
Creators: name: Gehrmann, Thomas
name: Henn, Johannes M.
name: Huber, Tobias
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this paper we study the Sudakov form factor in N=4 super Yang-Mills theory to the three-loop order. The latter is expressed in terms of planar and non-planar loop integrals. We show that it is possible to choose a representation in which each loop integral has uniform transcendentality. We verify analytically the expected exponentiation of the infrared divergences with the correct values of the three-loop cusp and collinear anomalous dimensions in dimensional regularisation. We find that the form factor in N=4 super Yang-Mills can be related to the leading transcendentality part of the quark and gluon form factors in QCD. We also study the ultraviolet properties of the form factor in D>4 dimensions, and find unexpected cancellations, resulting in an improved ultraviolet behaviour.
description: 34 pages, 9 figures
Playing host to cultural prestige : imperial agency in two Manchu kesi
Creators: name: Kares, Jean Louise
Publisher: name: University of British Columbia
Year: 2010

description: Rice Planting and The Hunt, two rare kesi 緙絲 (silk tapestry) in the collection of the Art Gallery of Greater Victoria (Victoria, Canada), dated to the Kangxi period (1662-1722), are part of a program to reshape Chinese culture in order to confirm the legitimacy of the new Qing regime. This thesis situates Rice Planting and The Hunt within the questions of how and why the Manchu played host to the prestige of kesi to reinforce their narrative of imperial lineage and command of high Chinese culture. As a pair, these works contain cultural contradictions as Rice Planting is set in southern China and refers to Confucian concerns, whereas The Hunt is set in the north and emphasizes Manchu cultural identity. While the kesi are noteworthy as individual works, their pairing extends their meaning and sharply foregrounds the political and societal tensions and aspirations of the time. This thesis argues that aspects of Song dynastic rule (960-1279) provided a model for the Manchu and tempered their approach to governing China and the personal demeanor of the emperor. The kesi are analyzed in relation to established themes and motifs within Chinese art, including the important Song genres of gengzhi tu, pictures of agricultural practices, and fanzu tu, depictions of nomadic tribes. Rice Planting and The Hunt are situated within the framework of relationships that existed between the works and their audiences through patronage and display. Alfred Gell’s theory of art and agency helps to contextualize how the works acted as social agents to communicate the state’s message, supported the authority and legitimacy of the dynasty, and were part of the network of the distributed personhood of the emperor. The kesi are further interrogated with regard to practices of copying, a key aspect of Chinese art, and posits that the transfer of conventions between media is more accurately considered translation. This case study of two Manchu kesi presents a new reading of the form and practice of kesi from the perspective of the study of visual culture in China, and contributes to rethinking traditional approaches to and topics in Chinese art.
title: Radiation Awareness of Junior Doctors
Creators: name: Selmi, Mariyah
Publisher: name: European Congress of Radiology
Year: 2016
Subjects: subject: Radioprotection / Radiation dose
subject: Professional issues
subject: CT
subject: Digital radiography
subject: Education
subject: Safety
subject: Dosimetry
subject: Education and training
subject: Quality assurance
subject: Dosimetric comparison

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: The harmful effects of radiation exposure and radiation dosesare topics sparsely covered in the undergraduate and postgraduate curriculum. This knowledge is essential for junior doctors to be able to assess the appropriateness of radiological...
Intermediate-Mass Black Holes in Globular Clusters
Creators: name: Lou, Yu-Qing
name: Wu, Yi-Hong
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: There have been reports of possible detections of intermediate-mass black holes (IMBHs) in globular clusters (GCs). Empirically, there exists a tight correlation between the central supermassive black hole (SMBH) mass and the mean velocity dispersion of elliptical galaxies, "pseudobulges" and classical bulges of spiral galaxies. We explore such a possible correlation for IMBHs in spherical GCs. In our model of self-similar general polytropic quasi-static dynamic evolution of GCs, a criterion of forming an IMBH is proposed. The key result is M(BH) = L o^1/(1-n) where M(BH) is the IMBH mass, o is the GC mean stellar velocity, L is a coefficient, and 2/3 < n < 1.
Aberration-like cusped focusing in the post-paraxial Talbot effect
Creators: name: Ring, James D
name: Lindberg, Jari
name: Howls, Christopher J
name: Dennis, Mark R
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We present an analysis of self-imaging in a regime beyond the paraxial, where deviation from simple paraxial propagation causes apparent self-imaging aberrations. The resulting structures are examples of aberration without rays and are described analytically using post-paraxial theory. They are shown to relate to, but surprisingly do not precisely replicate, a standard integral representation of a diffraction cusp. Beyond the Talbot effect, this result is significant as it illustrates that the effect of aberration -- as manifested in the replacement of a perfect focus with a cusp-like pattern -- can occur as a consequence of improving the paraxial approximation, rather than due to imperfections in the optical system.
description: 8 pages, 3 figures, IoP style
title: Imaging spectrum in benign vascular lesions in the breast
Creators: name: Parakh, Anushri
Publisher: name: European Congress of Radiology
Year: 2016
Subjects: subject: Breast
subject: Mammography
subject: Ultrasound-Colour Doppler
subject: MR
subject: Biopsy
subject: Arteriovenous malformations

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: The purpose of our poster is to illustrate the spectrum of imaging findings in benign vascular lesions of the breast on mammogram, ultrasound and...
title: Modified WHO Surgical safety check-lists for MRI-related safety in hybrid operating room
Creators: name: Cherkashin, Mikhail
Publisher: name: European Congress of Radiology
Year: 2016
Subjects: subject: Management
subject: Professional issues
subject: MR
subject: Intraoperative
subject: Education and training
subject: Quality assurance

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: Operating room management is the serious and complex task for hospital managers and the common approach is to develop relevant standard operational procedures. From patient and staff safetyperspective, operating room management should be...
Ab-initio angle and energy resolved photoelectron spectroscopy with time-dependent density-functional theory
Creators: name: De Giovannini, U.
name: Varsano, D.
name: Marques, M. A. L.
name: Appel, H.
name: Gross, E. K. U.
name: Rubio, A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: FOS: Physical sciences

description: We present a time-dependent density-functional method able to describe the photoelectron spectrum of atoms and molecules when excited by laser pulses. This computationally feasible scheme is based on a geometrical partitioning that efficiently gives access to photoelectron spectroscopy in time-dependent density-functional calculations. By using a geometrical approach, we provide a simple description of momentum-resolved photoe- mission including multi-photon effects. The approach is validated by comparison with results in the literature and exact calculations. Furthermore, we present numerical photoelectron angular distributions for randomly oriented nitrogen molecules in a short near infrared intense laser pulse and helium-(I) angular spectra for aligned carbon monoxide and benzene.
description: Accepted for publication on Phys. Rev. A
Observation of anisotropic diffusion of light in compacted granular porous materials
Creators: name: Alerstam, Erik
name: Svensson, Tomas
Publisher: name: arXiv
Year: 2011
Subjects: subject: Optics (physics.optics)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: It is known that compaction of granular matter can lead to anisotropic mechanical properties. Recent work has confirmed the link to pore space anisotropy, but the relation between compression, mechanical properties and material microstructure remains poorly understood and new diagnostic tools are needed. By studying the temporal and spatial characteristics of short optical pulses diffusively transmitted through compacted granular materials, we show that powder compaction can also give rise to strongly anisotropic diffusion of light. Investigating technologically important materials such as microcrystalline cellulose, lactose and calcium phosphate, we report increasing optical anisotropy with compaction force and radial diffusion constants being up to 1.7 times the longitudinal. This open new and attractive routes to material characterization and investigation of compression-induced structural anisotropy. In addition, by revealing inadequacy of isotropic diffusion models, our observations also have important implications for quantitative spectroscopy of powder compacts (e.g., pharmaceutical tablets).
description: New version with significantly improved presentation. Data and argumentation identical to previous version
RELREA-An Analytical Approach Supporting Continuous Release Readiness Evaluation
Creators: name: Shahnewaz, S. M.
Publisher: name: Graduate Studies
Year: 2014
Subjects: subject: Computer Science
subject: release readiness
subject: fuzzy set
subject: Aggregation
subject: Case Study
subject: software product
subject: release engineering
subject: readiness attributes

description: As part of iterative development, decision about “Is the software product ready to be released at some given release date?” have to be made at the end of each release, sprint or iteration. While this decision is critically important, so far it is largely done either informally or in a simplistic manner relying on a small set of isolated metrics. In addition, continuity in release readiness evaluation is not achieved and any problems related to release issues cannot be addressed proactively. In this thesis, an analytical approach called RELREA is proposed to address these gaps. The main characteristics of RELREA are: i) project specific release readiness attributes and metrics are selected in a systematic way, ii) overall release readiness is determined by aggregating and evaluating the degree of satisfaction of the most relevant readiness attributes, iii) continuous visibility on release readiness status, and iv) projection of release readiness at release time. Case studies with proprietary and open source software projects are performed to evaluate the proposed approach and its implementation. The case study results show that the RELREA approach and its implementation are able to assist one product manager in evaluating, monitoring, and analyzing release readiness at any point of time in the release cycle.
title: In-bore MRI-guided prostate biopsy – indications and advantages
Creators: name: Kuplevatsky, Vladimyr
Publisher: name: European Congress of Radiology
Year: 2016
Subjects: subject: Oncology
subject: Genital / Reproductive system male
subject: MR
subject: Biopsy
subject: Cancer
subject: Education and training

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: Prostate biopsy is the gold standard for cancer verification. Nowadays a lot of technologies used for PC biopsy - TRUS-guided, template perinneal, in bore MRI-guided, MR-US-fusion guided etc. All this methods charcterized by individual advantages...
Adoption of New Generation Reusable Coffee Cups Exchange Systems by Australian Coffee Drinkers: Sustainability and Circular Economy Perspectives
Creators: name: Ali, Mansoor
Publisher: name: Swinburne
Year: 2025

description: This thesis explores the adoption of coffee cup exchange systems in Australia, emphasising the cognitive and affective factors driving consumer participation. While previous research has primarily focused on pro-environmental behaviour of eco-friendly coffee consumption, it has largely overlooked the effectiveness of emerging sustainable coffee cup exchange systems. The theoretical model integrates the push, pull, and mooring migration model, the theory of planned behaviour, and the technology acceptance model. The findings reveal significant implications for policymakers and businesses, demonstrating that environmental concern, knowledge, perceived ease of use, and perceived usefulness are crucial determinants of consumers' intentions to adopt these systems.
title: Descriptors of malignant non-mass enhancement of breast MRI: their correlation to clinical prognostic factors
Creators: name: Machida, Youichi
Publisher: name: European Congress of Radiology
Year: 2016
Subjects: subject: Breast
subject: MR
subject: Staging
subject: Cancer

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: The Aim of This Study To investigate the significance of descriptors of malignant NME in breast MRIs in assessing presence of invasion or lymph node metastasis. Introduction Non-mass enhancement (NME) observed in magnetic resonance imaging (MRI) of...
Asteroseismology of red giants as a tool for studying stellar populations: first steps
Creators: name: Miglio, Andrea
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The detection of solar-like oscillations in G and K giants with the CoRoT and Kepler space-based satellites allows robust constraints to be set on the mass and radius of such stars. The availability of these constraints for thousands of giants sampling different regions of the Galaxy promises to enrich our understanding on the Milky Way's constituents. In this contribution we briefly recall which are the relevant constraints that red-giant seismology can currently provide to the study of stellar populations. We then present, for a few nearby stars, the comparison between radius and mass determined using seismic scaling relations and those obtained by other methods.
description: Proc. of the workshop "Red Giants as Probes of the Structure and Evolution of the Milky Way" (Roma, 15-17 Nov 2010), Astrophysics and Space Science Proceedings, ISBN 978-3-642-18417-8 (eds. A. Miglio, J. Montalban, A. Noels). Part of RedGiantsMilkyWay/2011/ proceedings available at http://arxiv.org/html/1108.4406v1
Fermentation of hemicellulose rich liquid fractions derived from steam pretreated softwoods
Creators: name: Liu, Michael Li Yu
Publisher: name: University of British Columbia
Year: 2010

description: One of the main challenges in the bioconversion of lignocellulosics into bioethanol is to maximize the recovery of hemicellulosic sugars while increasing ethanol production through fermentation of these sugars. Steam pretreatment of Douglas-fir (DF) and Lodgepole pine (LPP) at a severity factor of logR₀ = 3.64 resulted in water soluble fractions (WSFs) containing monomeric hexose sugars up to 86 g/L. The crude WSFs were not fermentable by four yeast strains: T₁ and T₂ (spent sulfite liquor adapted strains), Y1528 (haploid strain that preferentially ferment galactose first) and BY4742 (haploid laboratory strain). Dilution of fermentation inhibitors in crude WSFs led to appreciable improvements in their fermentability, especially by the SSL-adapted yeast strain T₂. The four yeast strains were tested against several model furan and phenolic compounds to examine their tolerance to these fermentation inhibitors. All four yeast strains produced comparable ethanol productivity when 3 g/L of HMF or 0.8 g/L of furfural were added to medium containing 2% glucose. However, T₁ and T₂ exhibited higher ethanol productivity compared to Y1528 and BY4742 when 5 g/L of 4-hydroxybenzoic acid and 5 g/L of vanillic acid were added to media as supplements. This provides evidence that the robustness of SSL-adapted T₁ and T₂ yeast strains probably originates from their tolerance to certain phenolic compounds. Overliming improved ethanol production from Douglas-fir 1 (DF1) WSF by T₂ from 1.7 g/L to 13 g/L. When DF1 WSF was spiked with glucose up to 100 g/L, it produced ethanol yields similar to that of the glucose reference fermentation media. Since it is not practical to spike WSF with glucose in an industrial process, we investigated the applicability of separate hydrolysis and fermentation (SHF) and hybrid hydrolysis and fermentation (HHF) with the whole slurry to achieve higher initial fermentable sugar concentration. SHF of combined WSF and hydrolysates recovered after enzymatic hydrolysis of water insoluble fraction (WIF) by T₂ produced up to 90% ethanol yield. HHF produced ethanol concentrations comparable to those of SHF with or without overliming. This result indicated that SHF and HHF of the whole slurry can help improve the fermentability of WSFs.
The Deterministic Part of IPC-4: An Overview
Creators: name: Edelkamp, S.
name: Hoffmann, J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: We provide an overview of the organization and results of the deterministic part of the 4th International Planning Competition, i.e., of the part concerned with evaluating systems doing deterministic planning. IPC-4 attracted even more competing systems than its already large predecessors, and the competition event was revised in several important respects. After giving an introduction to the IPC, we briefly explain the main differences between the deterministic part of IPC-4 and its predecessors. We then introduce formally the language used, called PDDL2.2 that extends PDDL2.1 by derived predicates and timed initial literals. We list the competing systems and overview the results of the competition. The entire set of data is far too large to be presented in full. We provide a detailed summary; the complete data is available in an online appendix. We explain how we awarded the competition prizes.
title: Placebo-controlled trial for betametasone efficacy assessment by MRI in patients with herniated intravertebral discs
Creators: name: Tkachev, Alexander
Publisher: name: European Congress of Radiology
Year: 2016
Subjects: subject: Outcomes
subject: Hernia
subject: Efficacy studies
subject: Diagnostic procedure
subject: MR
subject: Neuroradiology spine
subject: Musculoskeletal spine

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Glucocorticosteriods usage is the common disease management approach for back pain reliefin patients with herniated intravertebral disks. But in some cases antiinflammatory effects potentially may influence on HIVD involution and natural history by...
MPEC 2023-M165 : Editorial Notice: MPC planned power outage - Saturday 8 July 2023
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

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.
Propagation Of Waves In Periodic-Heterogeneous Bistable Systems
Creators: name: Löber, Jakob
name: Bär, Markus
name: Engel, Harald
Publisher: name: arXiv
Year: 2012
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: Wave propagation in one-dimensional heterogeneous bistable media is studied using the Schlögl model as a representative example. Starting from the analytically known traveling wave solution for the homogeneous medium, infinitely extended, spatially periodic variations in kinetic parameters as the excitation threshold, for example, are taken into account perturbatively. Two different multiple scale perturbation methods are applied to derive a differential equation for the position of the front under perturbations. This equation allows the computation of a time independent average velocity, depending on the spatial period length and the amplitude of the heterogeneities. The projection method reveals to be applicable in the range of intermediate and large period lengths but fails when the spatial period becomes smaller than the front width. Then, a second order averaging method must be applied. These analytical results are capable to predict propagation failure, velocity overshoot, and the asymptotic value for the front velocity in the limit of large period lengths in qualitative, often quantitative agreement with the results of numerical simulations of the underlying reaction-diffusion equation. Very good agreement between numerical and analytical results has been obtained for waves propagating through a medium with periodically varied excitation threshold.
description: 13 pages, 9 figures
title: The abnormal hepatic morphology: not always cirrhosis
Creators: name: Agnello, Francesco
Publisher: name: European Congress of Radiology
Year: 2016
Subjects: subject: Liver
subject: Abdomen
subject: CT
subject: MR
subject: Education
subject: Cirrhosis
subject: Metastases

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: -To review the CT and MRI appearance of the cirrhotic liver. -To describe thepathologic conditions that can mimic...
Roman Space Telescope Mission Overview
Creators: name: McEnery, Julie
Publisher: name: Zenodo
Year: 2023
Subjects: Roman mission and community engagement

description: Wide Field Infrared survey–Imaging and spectroscopy to >26.5 AB mag Expansion history of the Universe–Using supernova, weak lensing and galaxy redshift survey techniques Growth of Structure in the Universe–Weak lensing, redshift space distortions and galaxy cluster techniques Exoplanet Census–Statistical census of exoplanets from outer habitable zone to free floating planets General Astrophysics Surveys–Devote substantial fraction of mission lifetime to peer reviewed program Coronagraph technology demonstration–Demonstrate exoplanet coronagraphy with active wavefront control Telescope: 2.4m aperture Wide Field Instrument: Vis/Near IR bandpasses (0.48 – 2.3 micron), Field of view 0.281 deg2 (~200× HST WFC3-IR), 18 4k × 4k detectors (288 Mpixels) Coronagraph Instrument: Visible bandpass, Contrast 10-8-10-9 Data Volume: 11 Tb/day Orbit: Sun-Earth L2 Launch: before May 2027 (Currently working to Oct 2026) Mission Duration: 5 yr, 10 yr goal
title: Detection of potentially malignant lesions of the prostate gland by using a computer-assisted diagnostic tool based on multiparametric magnetic resonance imaging (mpMRI): preliminary results.
Creators: name: Cicero, Calogero
Publisher: name: European Congress of Radiology
Year: 2016
Subjects: subject: Genital / Reproductive system male
subject: MR-Diffusion/Perfusion
subject: CAD
subject: Biopsy
subject: Computer Applications-Detection, diagnosis
subject: Cancer

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Multiparametric magnetic resonance imaging (mp-MRI) combines morphological and functional information and is being increasingly used to detect cancer. One of the most promising applications of mp-MRI is to detect prostate cancer (PCa). Computer...
Timelike Constant Mean Curvature Surfaces with Singularities
Creators: name: Brander, David
name: Svensson, Martin
Publisher: name: arXiv
Year: 2011
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53A10 (Primary) 53C42, 53A35 (Secondary)

description: We use integrable systems techniques to study the singularities of timelike non-minimal constant mean curvature (CMC) surfaces in the Lorentz-Minkowski 3-space. The singularities arise at the boundary of the Birkhoff big cell of the loop group involved. We examine the behaviour of the surfaces at the big cell boundary, generalize the definition of CMC surfaces to include those with finite, generic singularities, and show how to construct surfaces with prescribed singularities by solving a singular geometric Cauchy problem. The solution shows that the generic singularities of the generalized surfaces are cuspidal edges, swallowtails and cuspidal cross caps.
description: 34 pages, 9 images
Immigration, Work and Family Life: Exploring the Settlement Experiences of Skilled Immigrants and Their Families
Creators: name: Parsons Leigh, Jeanna
Publisher: name: Graduate Studies
Year: 2014
Subjects: subject: Individual and Family Studies
subject: Immigrant Families
subject: Skilled Workers
subject: Settlement

description: International migration holds important consequences for the social organization of work and family life in the post-migration context. Yet, previous research suggests that more information is needed about the kinds of households that skilled immigrants form upon arriving in Canada and the ways in which pre-migration experiences affect the reconstitution of family life. This dissertation seeks to better understand the work and family circumstances of skilled immigrants and their families through open-ended qualitative interviews with 30 skilled immigrants residing in Calgary, Alberta. Specifically, it explores participants’ attempts to maintain a certain quality of family life in the face of various pressures and changes associated with settlement, and how the process of coming to Canada has affected preferred versions of parenting, family practices, and values. Findings suggest that paid work and family relations are strongly interconnected in the post-migration experiences of participants, with strained economic and social resources often limiting available options around the implementation of preferred parenting practices and values. However, this dissertation also shows that socioeconomic decline is not the sole aspect affecting the organization of post-migration family relations. Rather, a constellation of factors contribute to the reconstitution of family life for skilled immigrants, including paid work but also additional aspects such as flexibility in gender ideologies, accessible frameworks, strategies and coping mechanisms, cultural values, and available support networks. This dissertation thus demonstrates the great versatility of immigrant families and offers suggestions on how skilled immigrants might be better supported in their efforts to integrate into social and economic life.