cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
EXAMINING MEMORY CONSOLIDATION AND RECONSOLIDATION IN AN APPETITIVE PAVLOVIAN TASK
Creators: name: Chow, Jonathan J.
Publisher: name: University of Kentucky
Year: 2015
Subjects: subject: Biological Psychology

description: Memory plays an important role in defining how one behaves. The neurobiological mechanisms of memory have been studied extensively in animal models and the NMDA glutamate receptor has been identified to play an important role in the consolidation and reconsolidation of appetitive memories. Certain memories, depending on what was learned, can function differently and can be more difficult to disrupt based on a number of factors. Currently, no study has examined whether or not a reward-predictive stimulus attributed with incentive value is more difficult to disrupt than a stimulus that functions as a general reward-predictor. To determine the role of the NMDA receptor on memory consolidation with different functioning reward-predictive stimuli rats underwent a Pavlovian conditioned approach, where a post-session NMDA receptor antagonist was administered daily. Furthermore, to determine the role of the NMDA receptor on memory reconsolidation, another set of rats were trained on a Pavlovian conditioned approach task, after training was complete rats were presented with a reward-predictive stimuli followed by an administration of a NMDA receptor antagonist and then re-tested.
A SURVEY OF CURRENT MUSIC THERAPY PRACTICES ADDRESSING MOTOR GOALS IN CHILDREN WITH AUTISM SPECTRUM DISORDER
Creators: name: Proffitt, Matthew
Publisher: name: University of Kentucky
Year: 2015
Subjects: subject: Music Therapy

description: Motor deficits in children who are diagnosed with Autism Spectrum Disorder (ASD) have started to become recognized as an area of concern. The purpose of this study was to examine practices of board-certified music therapists who address motor goals of children with ASD. A total of 168 current board certified music therapists completed an 18-item online survey regarding music therapy practices with children who have ASD, particularly the frequency with which they address motor goals and specific goals and interventions. Respondents reported addressing motor goals with children who have ASD more frequently than suggested by previous research. Motor goals most commonly addressed include imitation, upper limb coordination, hand/eye coordination, compliance, and praxis skills. The most common interventions used to address motor goals were instrument play, movement activities, dancing, using manipulatives, and task-oriented music games. Using information provided from the study, music therapists will be better equipped in helping children with ASD who have motor deficits by providing a list of commonly used interventions and which specific motor goals they are used most commonly with.
Quantum behavior of graphene transistors near the scaling limit
Creators: name: Wu, Yanqing
name: Perebeinos, Vasili
name: Lin, Yu-ming
name: Low, Tony
name: Xia, Fengnian
name: Avouris, Phaedon
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The superior intrinsic properties of graphene have been a key research focus for the past few years. However, external components, such as metallic contacts, serve not only as essential probing elements, but also give rise to an effective electron cavity, which can form the basis for new quantum devices. In previous studies, quantum interference effects were demonstrated in graphene heterojunctions formed by a top gate. Here phase coherent transport behavior is demonstrated in a simple two terminal graphene structure with clearly-resolved Fabry-Perot oscillations in sub-100 nm devices. By aggressively scaling the channel length down to 50 nm, we study the evolution of the graphene transistor from the channel-dominated diffusive regime to the contact-dominated ballistic regime. Key issues such as the current asymmetry, the question of Fermi level pinning by the contacts, the graphene screening determining the heterojunction barrier width, the scaling of minimum conductivity and of the on/off current ratio, are investigated.
Insights into Perspectives on Environmental Sustainability
Creators: name: Shobe, Amber R.
Publisher: name: University of Kentucky
Year: 2015
Subjects: subject: Environmental Studies
subject: Social and Behavioral Sciences

description: As scientists become more aware of the imposing threats associated with climate change, university leaders are encouraged to become familiar with the principles of sustainability. Abundant research already supports the relevance of environmental sustainability in higher education; however, there exists a gap in the literature which investigates an understanding of environmental sustainability and the implementation of its practices. By examining colleges at the University of Kentucky, this study identifies organizational barriers to recognizing a thorough understanding of environmental sustainability at the departmental level. The results indicate that out of the eight colleges selected, two have no existing environmental sustainability programs or initiatives. Based on this research it is possible for departments to initiate self-assessment and situate themselves firmly inside an institutional vision of sustainability.
A new, concise synthesis of the brassinosteroids castasterone and brassinolide
Creators: name: Blazecka, Peter G.
Publisher: name: University of Calgary
Year: 1992
Subjects: subject: QK 898 B85 B59 1993
subject: Brassinolide
subject: Brassinosteroids - Synthesis
subject: Botanical chemistry

description: Bibliography: p. 103-111.
title: Hydrographic measurements collected aboard the UNOLS Ship R/V Walton Smith, 2014
title: Western Boundary Time Series cruise Florida Current : Cruise IDs - WS1403, WS1409, WS1414, WS1419
titleType: Subtitle
Creators: name: Hooper, James A.
name: Baringer, Molly O'Neil
Publisher: name: Department of Commerce, National Oceanic and Atmospheric Administration, Oceanic and Atmospheric Research Laboratories, Atlantic Oceanographic and Meteorological Laboratory.
Year: 2015
Subjects: subject: Walton Smith (Ship). Cruise (2014 : Florida Current)
subject: Hydrography--Florida Current--Measurement.

description: This report summarizes the four cruises along 27_N on the UNOLS ship R/V Walton Smith involving full-water-column CTD and lowered ADCP profiles, along with shipboard ADCP profiles, conducted within the Florida Straits to monitor the Florida Current. This report describes the processing of a Seabird Electronics Model 9/11+ CTD O2 system and water samples collected from up to 23 10-liter Niskin bottles lowered to the bottom. This re-port includes a description of the calibrations procedures and profiles of pressure, salinity (conductivity), temperature, and dissolved oxygen concentrations. Water samples were also collected at various depths and analyzed for salinity and oxygen concentrations to aid with CTD calibration. A total of 9 CTD-O2/LADCP stations were occupied during each of the four cruises.
Extremely Strong ^{13}CO J=3-2 Line in the "Water Fountain" IRAS 16342-3814: Evidence for the Hot-Bottom Burning
Creators: name: Imai, Hiroshi
name: Chong, Sze-Ning
name: He, Jin-Hua
name: Nakashima, Jun-ichi
name: Hsia, Chih-Hao
name: Sakai, Takeshi
name: Deguchi, Shuji
name: Koning, Nico
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We observed four "water fountain" sources in the CO J=3-2 line emission with the Atacama Submillimeter Telescope Experiment (ASTE) 10 m telescope in 2010-2011. The water fountain sources are evolved stars that form high-velocity collimated jets traced by water maser emission. The CO line was detected only from IRAS 16342-3814. The present work confirmed that the ^{12}CO to ^{13}CO line intensity ratio is ~1.5 at the systemic velocity. We discuss the origins of the very low ^{12}CO to ^{13}CO intensity ratio, as possible evidence for the "hot-bottom burning" in an oxygen-rich star, and the CO intensity variation in IRAS 16342-3814.
description: 10 pages, 3 figures, accepted for publication to the Publications of the Astronomical Society of Japan, Vol. 64, No. 5
David Andrist, Walter Flükiger und Albert Andrist mit Beiträgen von Elisabeth Schmid, Ernst Müller und F. Ed. Koby, Das Simmental zur Steinzeit
Creators: name: Narr, Karl J.
Publisher: name: Bonner Jahrbücher
Year: 2020

description: Rezension zu: David Andrist, Walter Flükiger und Albert Andrist mit Beiträgen von Elisabeth Schmid, Ernst Müller und F. Ed. Koby, Das Simmental zur Steinzeit. Acta Bernensia: Beiträge zur prähistorischen, klassischen und jüngeren Archäologie, Band III. Herausgegeben von H.- G. Bandi, P. Hofer, H. Jucker und H. Strahm. Bern 1964. 210 Seiten, 49 Abbildungen, 20 Tafeln
description: Bonner Jahrbücher, Bd. 165.1965: Bonner Jahrbücher
Impressum
Creators: name: Die Redaktion
Publisher: name: Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege
Year: 2020

description: -
description: Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege, Bd. 41 Nr. 4 (2000): Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege
High temperature thermodynamics of strongly interacting s-wave and p-wave Fermi gases in a harmonic trap
Creators: name: Peng, Shi-Guo
name: Li, Shi-Qun
name: Drummond, Peter D
name: Liu, Xia-Ji
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We theoretically investigate the high-temperature thermodynamics of a strongly interacting trapped Fermi gas near either s-wave or p-wave Feshbach resonances, using a second order quantum virial expansion. The second virial coefficient is calculated based on the energy spectrum of two interacting fermions in a harmonic trap. We consider both isotropic and anisotropic harmonic potentials. For the two-fermion interaction, either s-wave or p-wave, we use a pseudopotential parametrized by a scattering length and an effective range. This turns out to be the simplest way of encoding the energy dependence of the low-energy scattering amplitude or phase shift. This treatment of the pseudopotential can be easily generalized to higher partial-wave interactions. We discuss how the second virial coefficient and thermodynamics are affected by the existence of these finite-range interaction effects. The virial expansion result for a strongly interacting s -wave Fermi gas has already been proved very useful. In the case of p-wave interactions, our results for the high-temperature equation of state are applicable to future high-precision thermodynamic measurements for a spin-polarized Fermi gas near a p-wave Feshbach resonance.
description: 12 pages,10 figures
The stable and unstable accretion regimes: Implications for the stellar rotation
Creators: name: Pantolmos, George
name: Zanni, Claudio
name: Bouvier, Jerome
Publisher: name: Zenodo
Year: 2023

description: In this talk, I will present the outcome of three-dimensional simulations studying the interaction between a magnetized solar-mass protostar and its surrounding accretion disk. The standard picture of magnetospheric accretion suggests that the disk gas reaches the stellar surface through accretion funnels or curtains, the so-called stable accretion regime. Three-dimensional models are able to capture the intrinsically non-axisymmetric interchange (or magnetized Rayleigh-Taylor) instability that can develop at the magnetospheric boundary. Previous works have shown that this instability results in the formation of equatorial accretion tongues, which penetrate the stellar magnetosphere, further affecting the stellar photometric variability. This is the unstable accretion regime. The critical parameter, which characterises both the accretion state (stable or unstable) and the angular-momentum transport in the star-disk system, is the ratio between the disk truncation radius and the system co-rotation radius (where the disk rotation rate matches the stellar rotation rate). I will present a new scaling that predicts the disk truncation radius from the system global parameters such as the mass accretion rate, stellar mass and radius, magnetic field strength. In addition, I will demonstrate that stable accretion is a key ingredient for a stellar spin-down, with a spin-down timescale of about one Myr and thus, it can explain the observed slow rotation of classical T Tauri stars (i.e., class II low-mass young stellar objects). Finally, I will discuss how the observed variability in T Tauri stars, likely linked (consequence) with the accretion state, can provide insights on the rotational evolution state of the central object (spin-down or spin-up).
Klaus Tragbar, Vom Geschlechterturm zum Stadthaus Studien zu Herkunft, Typologie und städtebaulichen Aspekten des mittelalterlichen Wohnbaus in der Toskana (um 1100 bis 1350)
Creators: name: Lippert, Hans-Georg
Publisher: name: Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege
Year: 2020

description: Rezension zu: Klaus Tragbar, Vom Geschlechterturm zum Stadthaus Studien zu Herkunft, Typologie und städtebaulichen Aspekten des mittelalterlichen Wohnbaus in der Toskana (um 1100 bis 1350). 356 Seiten, 253 Abbildungen und 9 Textabbildungen, separater Kartenteil mit 8 Stadtplänen. Münster: Rhema-Verlag 2003. ISBN 3-930454-22-X
description: Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege, Bd. 47 Nr. 3 (2006): Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege
ANALYSIS OF GHANA’S 2012 BUDGET FOR THE HEALTH SECTOR
Creators: name: Boohene, David
name: Agyemang, Maxwell
name: Charles, Ricky-Okine
Publisher: name: figshare
Year: 2023
Subjects: Infant and child health
Health economics
Health management
Health promotion

description: The extreme importance of health to development and social welfare place health high on National budget all over the world. The health situation in Africa and Ghana specifically is poor and attempt to remedy the situation has emphasized on increase expenditure. The state remain the highest spender on health due to the positive externality characteristic of health with the huge financial responsibilities and relatively limited funds available to Government of Ghana (GoG), an approval of fund allocation to the health sector and its use is important. To access the budget for the sector, the study focuses on how the budget addresses the following themes; infrastructural development, poverty reduction, the MOG goals and National health policy objectives and finally the weakness and strength of the budget. The study reveals that Ghana’s budgeting process is improving with regards to the health sector.
Occupational and environmental risk factors in male infertility
Creators: name: Bigelow, Philip Lloyd
Publisher: name: University of Calgary
Year: 1992
Subjects: subject: RC 889 B54 1992
subject: Infertility, male

description: Bibliography: p. 326-341.
description: The effects of occupational, environmental, and recreational exposures on semen quality were investigated in a retrospective study of 1060 men who provided semen specimens at an infertility clinic in Calgary, Alberta. In analyses using continuous dependent variables, men who had reported varicocele, vasectomy, testicular injury, kidney infection, and the use of medications that were found to have an adverse effect on semen quality were excluded. In the case—control analysis, only varicocele and testicular injury were significantly more common in the case group, OR=2.8 and OR=2.3, respectively, and in later analyses men reporting these conditions were excluded. The consumption of caffeine was associated with statistically significant improvements in numerous parameters of semen, including sperm concentration, total sperm count, motile sperm concentration, and the percentage of normal forms, and was included as a control variable along with smoking, length of sexual abstinence, age, and season in which the specimen was provided. Seasonal variations in semen quality were observed in the data and specimens produced in the summer months had a significantly lower mean sperm concentration than those provided at other times of the year. The findings provided evidence to support the hypothesis that outdoor temperature was associated with variations in the values of sperm concentration, total sperm count, and total motile count. Occupational factors that may have increased testicular temperature, such as sitting, driving, heavy physical work, exposure to heat, and work in hot occupations, were not associated with significant changes in the values of any seminal parameters. When an index that incorporated both exposures to factors that likely raised and those that likely lowered testicular temperature was used, the means of sperm concentration, total sperm count, motile sperm concentration, and total motile count were significantly higher in the group exposed to activities that likely caused testicular hypothermia. The findings from the study were reassuring in terms of exposure to male reproductive hR72rds in the workplace. No specific activities, occupations, or occupational exposures were associated with impairment of semen quality in the population studied.
Die frühmittelalterliche Burg auf dem Johannisberg bei Jena-Lobeda
Creators: name: Grabolle, Roman
Publisher: name: Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege
Year: 2020

description: -
description: Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege, Bd. 48 Nr. 3 (2007): Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege
Stable isotope composition of dissolved sulphate and carbonate in selected natural systems
Creators: name: Staniaszek, Piotr
Publisher: name: University of Calgary
Year: 1992
Subjects: subject: QD 181 S1 S72 1992a
subject: Additional Copy: QD 181 S1 S72 1992
subject: Sulphates - Isotopes
subject: Carbonates - Isotopes
subject: Stable isotopes - Composition
subject: Geochemistry - Rocky Mountains, Canadian (B.C. and Alta.)

description: Bibliography: p. 194-221.
The Heraklion Extragalactic Catalogue (HECATE v2.0): A value-added galaxy catalogue and its applications
Creators: name: Kyritsis, Elias
name: Kovlakas, Konstantinos
name: Kouroumpatzakios, Konstantinos
name: Daoutis, Charalampos
name: Zezas, Andreas
Publisher: name: Zenodo
Year: 2023

description: The Heraklion Extragalactic CATalogue is a reference catalog which contains all known nearby galaxies in the local Universe (D ≲ 200Mpc). By incorporating and homogenizing data from HyperLEDA, NED, and infrared/optical surveys, the catalog provides a broad array of information such as positions, sizes, distances, morphological classifications, Star Formation Rate (SFR), stellar mass (M⋆), metallicity, and activity classifications. In the updated version (v2.0) of the catalogue, we increase the completeness of SFR, and M⋆ from ∼ 46% and ∼ 65% up to ∼ 76% and ∼ 90%, respectively, based on a combination of new calibrations and standard mid-infrared diagnostics. In addition, we calculate the gas-phase metallicity of the galaxies, either using the standard emission line-based spectroscopic relation or the stellar mass-metallicity scaling relation. As a result, the completeness of the Metallicity is increased from ∼ 30% up to ∼ 90%. Finally, by applying a new galactic activity classifier based on mid-IR/optical colors and machine learning, we increase the activity classification in the catalog from ∼ 30% to ∼ 60%. This catalog can have several astrophysical applications such as the identification of the hosts of gravitational-wave (GW) events, demographics of different source populations, and the connection between the X-ray luminosity of galaxies with their stellar population parameters using large statistical samples.'
Close Binary System GO Cyg
Creators: name: Ulas, B.
name: Kalomeni, B.
name: Keskin, V.
name: Kose, O.
name: Yakut, K.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: In this study, we present long term photometric variations of the close binary system \astrobj{GO Cyg}. Modelling of the system shows that the primary is filling Roche lobe and the secondary of the system is almost filling its Roche lobe. The physical parameters of the system are $M_1 = 3.0\pm0.2 M_{\odot}$, $M_2 = 1.3 \pm 0.1 M_{\odot}$, $R_1 = 2.50\pm 0.12 R_{\odot}$, $R_2 = 1.75 \pm 0.09 R_{\odot}$, $L_1 = 64\pm 9 L_{\odot}$, $L_2 = 4.9 \pm 0.7 L_{\odot}$, and $a = 5.5 \pm 0.3 R_{\odot}$. Our results show that \astrobj{GO Cyg} is the most massive system near contact binary (NCB). Analysis of times of the minima shows a sinusoidal variation with a period of $92.3\pm0.5$ years due to a third body whose mass is less than 2.3$M_{\odot}$. Finally a period variation rate of $-1.4\times10^{-9}$ d/yr has been determined using all available light curves.
description: Accepted for publication in New Astronomy, 18 pages, 4 figures, 7 tables
Influence of crystal anisotropy on the critical state stability and flux jumps dynamics in a single crystal of La(1.85)Sr(0.15)CuO(4)
Creators: name: Nabialek, A.
name: Wisniewski, A.
name: Chabanenko, V. V.
name: Vasiliev, S. V.
name: Tsvetkov, T. V.
name: Perez-Rodriguez, F.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We studied the critical state stability in a large cubic sample of a single crystalline La(1.85)Sr(0.15)CuO(4) for different sample orientations with respect to the external magnetic field as well as the dynamics of the flux jumps. It is shown that thermomagnetic avalanches develop in dynamic conditions characterized by significantly lower magnetic diffusivity than the thermal one. In this case, critical state stability depends strongly on cooling conditions. We compared predictions of the isothermal model and of the model for the weakly cooled sample with experimental results. In both models, the field of the first flux jump decreases with an increase of sweep rate of the external magnetic field. We also investigated the influence of external magnetic field on the dynamics of the following stages of the thermomagnetic avalanche. It is shown that the dynamics of the flux jumps is correlated with the magnetic diffusivity proportional to the flux flow resistivity.
description: submitted to: Superconductor Science and Technology, 17 pages, 5 figures
Birth and Destruction in the Protoplanetary Disks: Dust Production by Planetesimal Collisions
Creators: name: Danai, Polychroni
name: Diego, Turrini
name: Francesco, Marzari
name: Leonardo, Testi
Publisher: name: Zenodo
Year: 2023
Subjects: planet formation; Protoplanetary Disks; circumstellar disks;

description: Dust plays a central role in the chemical evolution of protoplanetary disks and is the source material from which planetary bodies form. Coagulation into planetesimals and planets is expected to steadily decrease the dust abundance in disks over time. However, recent surveys point to the median dust content of disks increasing from 1 to 2 Myr in nearby star-forming regions. Furthermore, resolved observations of HD 163296 reveal unexpected regions of high dust concentration across its extension. Building on our insight on the collisional evolution of small bodies from the Solar System, we show that such unexpected behaviours of the dust stem from the planet formation process. The early formation of massive planets dynamically stirs the nearby planetesimals and causes high-velocity impacts between them, resulting in the production of second-generation dust. This collisional production naturally explains the rise in the dust population observed in disks with ages between 1 and 2 Myr, suggesting this is the characteristic timescale of giant planet formation. The appearance of second-generation dust also explains the spatial distribution of dust observed in older disks like HD 163296. By sustaining the dust population over time, this collisional rejuvenation process acts to extend the duration of the planet formation process and the chemical evolution of disks.
Postmodernism, cybernetics and William Gibson
Creators: name: Schroeder, Randy
Publisher: name: University of Calgary
Year: 1992
Subjects: subject: PS 8557 I29 Z9 1992
subject: Gibson, William, 1948- - Criticism and interpretation
subject: Postmodernism (Literature)
subject: Cybernetics in Literature

description: Bibliography: p. 105-113.
Tensor-vector-scalar-modified gravity: from small scale to cosmology
Creators: name: Bekenstein, Jacob D.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The impressive success of the standard cosmological model has suggested to many that its ingredients are all one needs to explain galaxies and their systems. I summarize a number of known problems with this program. They might signal the failure of standard gravity theory on galaxy scales. The requisite hints as to the alternative gravity theory may lie with the MOND paradigm which has proved an effective summary of galaxy phenomenology. A simple nonlinear modified gravity theory does justice to MOND at the nonrelativistic level, but cannot be consistently promoted to relativistic status. The obstacles were first sidestepped with the formulation of TeVeS, a covariant modified gravity theory. I review its structure, its MOND and Newtonian limits, and its performance in face of galaxy phenomenology. I also summarize features of TeVeS cosmology and describe the confrontation with data from strong and weak gravitational lensing
description: Invited talk at the Royal Society's Theo Murphy Meeting "Testing general relativity with cosmology", Feb. 2011. LaTeX, 15 pages
Quantitative analysis of pedestrian counterflow in a cellular automaton model
Creators: name: Nowak, Stefan
name: Schadschneider, Andreas
Publisher: name: arXiv
Year: 2012
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Cellular Automata and Lattice Gases (nlin.CG)
subject: FOS: Physical sciences

description: Pedestrian dynamics exhibits various collective phenomena. Here we study bidirectional pedestrian flow in a floor field cellular automaton model. Under certain conditions, lane formation is observed. Although it has often been studied qualitatively, e.g., as a test for the realism of a model, there are almost no quantitative results, neither empirically nor theoretically. As basis for a quantitative analysis we introduce an order parameter which is adopted from the analysis of colloidal suspensions. This allows to determine a phase diagram for the system where four different states (free flow, disorder, lanes, gridlock) can be distinguished. Although the number of lanes formed is fluctuating, lanes are characterized by a typical density. It is found that the basic floor field model overestimates the tendency towards a gridlock compared to experimental bounds. Therefore an anticipation mechanism is introduced which reduces the jamming probability.
description: 11 pages, 12 figures, accepted for publication in Phys. Rev. E
Cheminformatics and Mass Spectrometry meets Clinical Metabolomics
Creators: name: Schymanski, Emma
Publisher: name: Zenodo
Year: 2021
Subjects: exposome
clinical metabolomics

description: Invited talk for the Clinical Metabolomics 2021 meeting in Copenhagen, Denmark (hybrid form). Talk could not be held live on the day as scheduled due to illness, slides and recording posted after the event. Enjoy!
Entropy estimation for partially accessible Markov networks based on imperfect observations: Role of finite resolution and finite statistics
Creators: name: Fritz, Jonas H.
name: Ertel, Benjamin
name: Seifert, Udo
Publisher: name: arXiv
Year: 2024
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Estimating entropy production from real observation data can be difficult due to finite resolution in both space and time and finite measurement statistics. We characterize the statistical error introduced by finite sample size and compare the performance of three different entropy estimators under these limitations for two different paradigmatic systems, a four-state Markov network and an augmented Michaelis-Menten reaction scheme. We consider the thermodynamic uncertainty relation, a waiting-time based estimator for resolved transitions and a waiting-time based estimator for blurred transitions in imperfect observation scenarios. For perfect measurement statistics and finite temporal resolution, the estimator based on resolved transitions performs best in all considered scenarios. The thermodynamic uncertainty relation gives a better estimate than the estimator based on blurred transitions at low driving affinities, whereas the latter performs better at high driving affinities. Furthermore, we find that a higher temporal and spatial resolution leads to slower convergence of measurement statistics, implying that for short measurement times, a lower resolution may be beneficial. Additionally, we identify a self-averaging effect for the waiting-time based entropy estimators that can reduce their variance for observations with finite statistics.
Probabilistic frames: An overview
Creators: name: Ehler, Martin
name: Okoudjou, Kasso A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Probability (math.PR)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 42C15

description: Finite frames can be viewed as mass points distributed in $N$-dimensional Euclidean space. As such they form a subclass of a larger and rich class of probability measures that we call probabilistic frames. We derive the basic properties of probabilistic frames, and we characterize one of their subclasses in terms of minimizers of some appropriate potential function. In addition, we survey a range of areas where probabilistic frames, albeit, under different names, appear. These areas include directional statistics, the geometry of convex bodies, and the theory of t-designs.
From commune to condottieri: the development of infantry in medieval and Renaissance Italy, 1160-1525
Creators: name: De Iure, Raniero
Publisher: name: University of Calgary
Year: 1992
Subjects: subject: DG 483 D45 1992
subject: Italy - History - 476-1492
subject: Italy - History - 1492-1559
subject: Infantry - History
subject: Condottieri
subject: Italy - History, Military

description: Bibliography: p. 153-161.
Endemic ambiguity: the role of caregivers in relation to parents of children in daycare
Creators: name: Shimoni, Rena
Publisher: name: University of Calgary
Year: 1992
Subjects: subject: HV 851 S44 1992
subject: Day care centers - Employees
subject: Day care aides - Attitudes
subject: Parents - Attitudes
subject: Parent and child

description: Bibliography: p. 200-213.
Elizabethan Catholicism: resistance, loyalty and the myth of persecution
Creators: name: Mason, Rhonda L.
Publisher: name: University of Calgary
Year: 1992
Subjects: subject: BX 1492 M37 1992
subject: Catholics - England - History - 16th Century
subject: Great Britain - Politics and government - 1558-1603
subject: Great Britain - Church history - 16th Century

description: Bibliography: p. 103-106.
description: The history of Elizabethan Catholicism has often been examined. For the most part, the historiography is consistent in that it states that Catholics were loyal to their Queen in all but religious matters. It also states that any resistance that was present was based only on matters of conscience. The punishment for this resistance has therefore been called 'persecution.' A closer examination of state papers and individual Catholics' personal papers contradicts these beliefs. There were distinctive groups of English Catholics throughout Elizabeth's reign who showed differing levels of loyalty and resistance. These groups also faced differing levels of punishment, most of it being singularly mild. Ordinary lay Catholics in England were loyal to Elizabeth in most matters. The resistance came from Continental exiles and Jesuits who wanted England re-converted to Catholicism. The historiography has seemed to miss the distinction.
Beam Halo Imaging with a Digital Optical Mask
Creators: name: Zhang, H. D.
name: Fiorito, R. B.
name: Shkvarunets, A. G.
name: Kishek, R. A.
name: Welsch, C. P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: Beam halo is an important factor in any high intensity accelerator. It can cause difficulties in the control of the beam, emittance growth, particle loss and even damage to the accelerator. It is therefore essential to understand the mechanisms of halo formation and its dynamics in order to control and minimize its effects. Experimental measurement of the halo distribution is an important tool for such studies. In this paper, we present a new adaptive masking method that we have developed to image beam halo, which uses a digital micro-mirror-array device (DMD). This method has been thoroughly investigated in the laboratory using laser and white light sources, and with real beams produced by the University of Maryland Electron Ring (UMER). A high dynamic range ~10(5) has been demonstrated with this new method and recent studies indicate that this number can be exceeded for more intense beams by at least an order of magnitude. The method is flexible, easy to setup and can be used at any accelerator or light source. We present the results of our measurements of the performance of the method and images of beam halos produced under various experimental conditions.
description: 44 pgs.; submitted to Phys. Rev. ST Accel. and Beams, 3/9/2012
Camas processing or upland hunting: an interpretation of lithic scatters at High Prairie
Creators: name: Brisland, Richard T. W.
Publisher: name: University of Calgary
Year: 1992
Subjects: subject: E 78 I18 B75 1992
subject: Excavations (Archaeology) - Idaho
subject: Idaho - Antiquities
subject: Indians of North America - Idaho - Antiquities
subject: Hunting, Primative

description: Bibliography: p. 118-132.
description: Ethnographic, archaeological and historical data are employed to develop a cultural context for the use of camas in the vicinity of south central Idaho. The consequent hypotheses are tested using an assemblage of stone tools and debitage from five sites at High Prairie. High Prairie is in a region known to have been an important camas harvesting site during the historic period. The recovered artifact assemblage is almost completely made up of chipped stone tools and the byproducts of their manufacture. Flake tools are the most frequently occurring artifact type. A study of the use-wear on the utilized edges on the flake tools and a detailed analysis of the lithic debitage are the most important analytical techniques used in the interpretation of the High Prairie sites. Projectile points are also numerous and based on extant chronologies, the sites may date as early as the time of Christ, with repetitive reoccupations probably occurring into the late prehistoric period. Excavations at High Prairie and the subsequent analysis of the artifact assemblage failed to produce any evidence for the intensive processing of camas root. In fact, the assemblages suggest that the sites are related to the obsidian quarry near Fairfield and represent the procurement of lithic raw material, possibly in anticipation of tool needs during hunting forays in the surrounding uplands.
Politics, performance and morale: 16 Irish division, 1914-1918
Creators: name: Lemisko, Lynn Speer
Publisher: name: University of Calgary
Year: 1992
Subjects: subject: D 547 I6 L49 1992
subject: Great Britain. Army - Irish Regiments - History
subject: World War, 1914-1918 - Regimental histories - Great Britain - 16 Irish Division

description: Bibliography: p. 154-159.
Quantum trails and memory effects in the phase space of chaotic quantum systems
Creators: name: Pizzi, Andrea
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: The eigenstates of a chaotic system can be enhanced along underlying unstable periodic orbits in so-called quantum scars, making it more likely for a particle launched along one such orbits to be found still there at long times. Unstable periodic orbits are, however, a negligible part of the phase space, and a question arises regarding the structure of the wave function elsewhere. Here, we address this question and show that a weakly-dispersing dynamics of a localized wave packet in phase space leaves a "quantum trail" on the eigenstates, that is, makes them vary slowly when moving along trajectories in phase space, even if not periodic. The quantum trails underpin a remarkable dynamical effect: for a system initialized in a localized wave packet, the long-time phase-space distribution is enhanced along the short-time trajectory, which can result in ergodicity breaking. We provide the general intuition for these effects and prove them in the stadium billiard, for which an unwarping procedure allows us to visualize the phase space on the two-dimensional space of the page.
description: 5 pages, 3 figures
More Accurate Measurement of Return Peak Current in Cyclic Voltammetry Using Diffusional Baseline Fitting
Creators: name: Macedo, David
name: Rodopoulos, Theo
name: Vepsäläinen, Mikko
name: Bajaj, Samridhi
name: Hogan, Conor
Publisher: name: La Trobe
Year: 2024
Subjects: classificationCode: 400805
subject: Electrical energy transmission, networks and systems
classificationCode: 3205
subject: Medical biochemistry and metabolomics
classificationCode: 4004
subject: Chemical engineering
subject: FOS: Chemical engineering
classificationCode: 3401
subject: Analytical chemistry

description: The difficulty associated with accurately measuring the height of the back peak (Ipb) in cyclic voltammetry (CV) has long plagued electrochemists. Most commonly, Ipb is measured by extrapolating a linear fit from a selected region of a voltammogram after the switching potential (Eλ), but without substantial separation between the peak potential (Ep) and Eλ, this approach always overestimates the background current and so underestimates Ipb. Moreover, experimental conditions can present challenges for this method as an appropriate region for linear fitting is often lacking due to neighboring peaks or solvent electrolysis current. Here, we present a new method for finding the baseline current for the back peak in CV experiments. By examining the CV data as a function of time rather than potential, it is possible to fit a generalized Cottrell or Shoup-Szabo equation to the current decay of the forward peak and extrapolate this function as a baseline for the return peak. This approach was tested by using simulated and experimental data in a variety of conditions, including data demonstrating linear and radial diffusional control. We found that the method allows for more accurate determination of back peak currents, especially when linear fits are complicated by narrow electrochemical windows or radial diffusion. A user-friendly Python program was written to automatically find an appropriate fitting range for this analysis and measure peak currents. We have made this program available to the electrochemical community at large.
Quantum corrections of the biquadratic interaction in the 1D spin-1/2 frustrated ferromagnetic systems
Creators: name: Vahedi, Javad
name: Mahdavifar, Saeed
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Quantum corrections of the biquadratic interaction in the 1D spin-1/2 frustrated ferromagnetic Heisenberg model are studied. The biquadratic interaction for spin-1/2 chains is eliminated and transformed to the quadratic interaction. Doing a numerical experiment, new insight as to how the classical phases get modified on the inclusion of quantum fluctuations is provided. Observed results suggest the existence of an intermediate region in the ground state phase diagram of the frustrated ferromagnetic spin-1/2 chains with combination of dimer and chiral orders. In addition, from the quantum entanglement view point, differences between quantum phases are also obtained. The nearest neighbor spins never be entangled in the frustrated ferromagnetic chains but are entangled up to the Majumdar-Ghosh point in the frustrated antiferromagnetic chains. On the other hand, the next nearest neighbor spins in the mentioned intermediate region are entangled.
description: 8 pages, 10 figures; submitted
A new metric for rotating charged Gauss-Bonnet black holes in AdS spaces
Creators: name: Zou, De-Cheng
name: Yang, Zhan-Ying
name: Yue, Rui-Hong
name: Yu, Tian-Yi
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: This paper presents a new metric for slowly rotating charged Gauss-Bonnet black holes in higher dimensional anti-de Sitter spaces. Taking the angular momentum parameter $a$ up to second order, the slowly rotating charged black hole solutions are obtained by working directly in the action.
description: 11 pages and accepted by Chin. Phys. B
title: Investigating the effects of hypoxia on brain tumour cell invasion using advanced in vitro and in vivo imaging
Creators: name: Kelly, Claire
Publisher: name: University of Liverpool Repository
Year: 2024

description: Glioblastoma (GBM) is the deadliest adult primary brain tumour. Limited treatment options for patients with GBM results in the dismal prognosis of 12–15 months, highlighting the unmet need for novel therapies for these patients. Tumour hypoxia is one reason for the highly aggressive and invasive nature of this tumour and is correlated with acquired therapy resistance, regulated by hypoxia inducible transcription factors (HIFs). Novel approaches to combat this disease has seen the development of therapies targeting alternative pathways such as tumour metabolism. Our aim was to firstly investigate the cellular mechanisms trigged by choline kinase alpha (ChoKα) inhibitor, JAS239 on four GBM cell lines (F98, 9L, U-87 MG and U-251 MG), and to assess the impact of hypoxia on JAS239 efficacy. Additionally, we also sought to determine the anti-tumour activity of JAS239 in vivo using orthotopic GBM rodent models and magnetic resonance frequency (MRS) for monitoring therapy response. Hypoxia and JAS239 treatment demonstrated significant alterations on cell metabolism across all cell lines. The ‘Warburg effect’ was the most commonly altered metabolic pathway in response to hypoxia and JAS239 treatment, along with glutamine/glutamate, branched chain amino acids and fatty acid metabolism. Furthermore, we observed that JAS239 induced significant reductions in cell proliferation and induced cell cycle arrest in all GBM cell lines. Interestingly, three out of the four cell lines (F98, U-87 MG and U-251 MG) were resistant to JA239 treatment under hypoxic conditions. To better explore the effect of the tumour microenvironment on the drug sensitivity, we cultured F98 and U-87 MG cells as 3D spheroids and tested the effects of JAS239 in these models. We found JAS239 induced antiinvasive responses, however these responses varied on parameters assessed and overall conclusive statements about the cell phenotypes based on these data were difficult to draw. We then used in vivo orthotopic F98 and 9L GBM models and observed a ~50% tumour growth arrest in JAS239 treated animals. In vivo MR spectra from the tumour regions of F98 and 9L tumours demonstrated a trend of reduction in total choline (tCho) metabolite levels. Similarly, we observed a significant reduction in tCho:NAA ratio in 9L tumours (*p<0.05) and a trend of reduction in F98 tumours. These data correlated with a reduction in mitotic index in both F98 and 9L JAS239 treated tumours. In conclusion, this work highlights the heterogeneity across the four cell lines and the variation in response of the cells to both hypoxia and JAS239. This work also demonstrates the usefulness of MRS for monitoring therapy response non-invasively.
Cet ete qui chantait: a thematic analysis
Creators: name: Marks, M. Timothy J.
Publisher: name: University of Calgary
Year: 1992
Subjects: subject: PS 9535 O98 Z77 1992
subject: Roy, Gabrielle, 1909-1983 - Criticism and interpretation
subject: Roy, Gabrielle, 1909-1983. Cet ete qui chantait

description: Bibliography: p. 60-63.
A 30 AU radius CO gas hole in the disk around the Herbig Ae star Oph IRS 48
Creators: name: Brown, Joanna M.
name: Herczeg, Gregory J.
name: Pontoppidan, Klaus M.
name: van Dishoeck, Ewine F.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The physical processes leading to the disappearance of disks around young stars are not well understood. A subclass of transitional disks, the so-called cold disks with large inner dust holes, provide a crucial laboratory for studying disk dissipation processes. IRS 48 has a 30 AU radius hole previously measured from dust continuum imaging at 18.7 micron. Using new optical spectra, we determine that IRS 48 is a pre-main sequence A0 star. In order to characterize this disk's gas distribution, we obtained AO-assisted VLT CRIRES high resolution (R ~100,000) spectra of the CO fundamental rovibrational band at 4.7 micron. All CO emission, including that from isotopologues and vibrationally excited molecules, is off-source and peaks at 30 AU. The gas is thermally excited to a rotational temperature of 260 K and is also strongly UV pumped, showing a vibrational excitation temperature of ~5000 K. We model the kinematics and excitation of the gas and posit that the CO emission arises from the dust hole wall. Prior imaging of UV-excited PAH molecules, usually a gas tracer, within the hole makes the large CO hole even more unexpected.
description: 35 pages, 13 figures, accepted to ApJ
Incremental Slow Feature Analysis: Adaptive and Episodic Learning from High-Dimensional Input Streams
Creators: name: Kompella, Varun Raj
name: Luciw, Matthew
name: Schmidhuber, Juergen
Publisher: name: arXiv
Year: 2011
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Slow Feature Analysis (SFA) extracts features representing the underlying causes of changes within a temporally coherent high-dimensional raw sensory input signal. Our novel incremental version of SFA (IncSFA) combines incremental Principal Components Analysis and Minor Components Analysis. Unlike standard batch-based SFA, IncSFA adapts along with non-stationary environments, is amenable to episodic training, is not corrupted by outliers, and is covariance-free. These properties make IncSFA a generally useful unsupervised preprocessor for autonomous learning agents and robots. In IncSFA, the CCIPCA and MCA updates take the form of Hebbian and anti-Hebbian updating, extending the biological plausibility of SFA. In both single node and deep network versions, IncSFA learns to encode its input streams (such as high-dimensional video) by informative slow features representing meaningful abstract environmental properties. It can handle cases where batch SFA fails.