cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Running the course: complexity and enactivism in education
Creators: name: Budd, Barbara Ann
Publisher: name: University of British Columbia
Year: 2009

description: Recent findings in complexity theory and enactivism have a relevance on how we view and teach children. In this study, 10-yearold children were taught the basics of complexity theory using improvisational writing, theatre sports, and fractal geometry over a 6-month period. The curriculum was framed in an extemporal methodology based in complexity theory (specifically drawing on chaos theory, systems theory, and emergence). An enactivist theory of cognition, whereby knowledge is seen as a complex process involving learners, teacher, and environment—rather than a reductionist project of inputting information into learners—was the basis for final appraisal of student learning. The outcomes of the study suggest that complexity and enactivism might serve to inform both the content and the structure of curriculum—in the process, rendering visible many of the reductionist and untenable assumptions that infuse much of conventional teaching.
Resolving Hubble tension with the Milne model
Creators: name: Vishwakarma, Ram Gopal
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: The recent measurements of the Hubble constant based on the standard $Λ$CDM cosmology reveal an underlying disagreement between the early-Universe estimates and the late-time measurements. Moreover, as these measurements improve, the discrepancy not only persists but becomes even more significant and harder to ignore. The present situation places the standard cosmology in jeopardy and provides a tantalizing hint that the problem results from some new physics beyond the $Λ$CDM model. It is shown that a non-conventional theory - the Milne model - which introduces a different evolution dynamics for the Universe, alleviates the Hubble tension significantly. Moreover, the model also averts some long-standing problems of the standard cosmology, for instance, the problems related with the cosmological constant, the horizon, the flatness, the Big Bang singularity, the age of the Universe and the non-conservation of energy.
description: Received an Honorable Mention in the 2020 Essay Competition of the Gravity Research Foundation
Theory of AC Anomalous Hall Conductivity in d-electron systems
Creators: name: Tanaka, Takuro
name: Kontani, Hiroshi
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: To elucidate the intrinsic nature of anomalous Hall effect (AHE) in $d$-electron systems, we study the AC anomalous Hall conductivity (AHC) in a tight-binding model with ($d_{xz},d_{yz}$)-orbitals. We drive a general expression for the AC AHC $σ_{xy}(ω)$, which is valid for finite quasiparticle damping rate $γ$=$\hbar/2τ$, and find that the AC AHC is strongly dependent on $γ$. When $γ=+0$, the AC AHC shows a spiky peak at finite energy $Δ$ that originates from the interband particle-hole excitation, where $Δ$ represents the minimum band-splitting measured from the Fermi level. In contrast, we find that this spiky peak is quickly suppressed when $γ$ is finite. By using a realistic value of $γ(ω)$ at $ω=Δ/2$ in $d$-electron systems, the spiky peak is considerably suppressed. In the present model, the obtained results also represents the AC spin Hall conductivity in a paramagnetic state.
description: 13pages, 9 figures
Οι Θεομητορικοί ύμνοι "Ανωθεν οι προφήται" και "Επι σοι χαίρη" στην μνημειακή μεταβυζαντινή τέχνη της Ελλάδας:
Creators: name: Μωυσίδου, Μελίνα Ηλία
Publisher: name: Aristotle University of Thessaloniki
Year: 2009
Subjects: Θεομητορικός
Υμνος
Προφήται
Εικονογραφία
Μεταβυζαντινή
Μνημειακή
Mariological
Hymn
Prophets
Iconography
Post byzantine
Monumental

description: Στα χρόνια μετά την Αλωση η λατρεία της Παναγίας γνωρίζει μεγάλη άνθιση. Μεταξύ των θεομητορικών παραστάσεων που συχνά επιλέγονται για να δικοσμήσουν το εικονογραφικό πρόγραμμα των μεταβυζαντινών ναών είναι και οι θεομητορικοί ύμνοι "Ανωθεν οι προφήται" και "Επί σοι χαίρει". Μέσα από τους ύμνους αυτούς επιτυγχάνεται σε πολύ μεγάλο βαθμό η ενίσχυση του προσώπου της Θεοτόκου.
description: The Adoration of the Virgin Mary had been increased in post-Byzantine times. As a consequence, the mariological representations had been also increased. Two of the most popular mariological representations are "Ανωθεν οι προφήται" and "Επί σοι χαίρει".
Recovery of classical chaotic-like behaviour in a quantum three-body problem
Creators: name: Everitt, M. J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Recovering trajectories of quantum systems whose classical counterparts display chaotic behavior has been a subject that has received a lot of interest over the last decade. However, most of these studies have focused on driven and dissipative systems. The relevance and impact of chaoticlike phenomena to quantum systems has been highlighted in recent studies which have shown that quantum chaos is significant in some aspects of quantum computation and information processing. In this paper we study a three-body system comprising of identical particles arranged so that the system's classical trajectories exhibit Hamiltonian chaos. Here we show that it is possible to recover very nearly classical-like, conservative, chaotic trajectories from such a system through an unravelling of the master equation. First, this is done through continuous measurement of the position of each system. Second, and perhaps somewhat surprisingly, we demonstrate that we still obtain a very good match between the classical and quantum dynamics by weakly measuring the position of only one of the oscillators.
description: 6 pages, 6 figures
Designing an Interactive Visualization System for Monitoring Participant Compliance in a Large-Scale, Longitudinal Study
Creators: name: Sukumar, Poorna Talkad
name: Breideband, Thomas
name: Martinez, Gonzalo
name: Caruso, Megan
name: Rose, Sierra
name: Steputis, Cooper
name: D'Mello, Sidney
name: Mark, Gloria
name: Striegel, Aaron
Publisher: name: arXiv
Year: 2020
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Frequent monitoring of participant compliance is necessary when conducting large-scale, longitudinal studies to ensure that the collected data is of sufficiently high quality. While the need for achieving high compliance has been underscored and there are discussions on incentives and factors affecting compliance, little is shared about the actual processes and tools used for monitoring compliance in such studies. Monitoring participant compliance with respect to multi-modal data can be a tedious process, especially if there are only a few personnel involved. In this case study, we describe the iterative design of an interactive visualization system we developed for monitoring compliance and refined based on changing requirements in an ongoing study. We find that the visualization system, leveraging the digital medium, both facilitates the exploratory tasks of monitoring participant compliance and supports asynchronous collaboration among non-co-located researchers. Our documented requirements for checking participant compliance as well as the design of the visualization system can help inform the compliance-monitoring process in future studies.
description: 8 pages, 4 figures
Tunable Fermi acceleration in the driven elliptical billiard
Creators: name: Lenz, Florian
name: Diakonos, Fotis K.
name: Schmelcher, Peter
Publisher: name: arXiv
Year: 2008
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We explore the dynamical evolution of an ensemble of non-interacting particles propagating freely in an elliptical billiard with harmonically driven boundaries. The existence of Fermi acceleration is shown thereby refuting the established assumption that smoothly driven billiards whose static counterparts are integrable do not exhibit acceleration dynamics. The underlying mechanism based on intermittent phases of laminar and stochastic behavior of the strongly correlated angular momentum and velocity motion is identified and studied with varying parameters. The diffusion process in velocity space is shown to be anomalous and we find that the corresponding characteristic exponent depends monotonically on the breathing amplitude of the billiard boundaries. Thus it is possible to tune the acceleration law in a straightforwardly controllable manner.
Indirect control with quantum accessor (I): coherent control of multi-level system via qubit chain
Creators: name: Fu, H. C.
name: Dong, Hui
name: Liu, X. F.
name: Sun, C. P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Indirect controllability of an arbitrary finite dimensional quantum system (N-dimensional qudit) through a quantum accessor is investigated. Here, The qudit is coupled to a quantum accessor which is modeled as a fully controllable spin chain with nearest neighbor (anisotropic) XY-coupling. The complete controllability of such indirect control system is investigated in detail. The general approach is applied to the indirect controllability of two and three dimensional quantum systems. For two and three dimensional systems, a simpler indirect control scheme is also presented.
description: 9 pages, 3 figures. To appear in Phys.Rev.A
Correlation of CMB with large-scale structure: I. ISW Tomography and Cosmological Implications
Creators: name: Ho, Shirley
name: Hirata, Christopher M.
name: Padmanabhan, Nikhil
name: Seljak, Uros
name: Bahcall, Neta
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We cross-correlate large scale structure (LSS) observations from a number of surveys with CMB anisotropies from WMAP to investigate the Integrated Sachs-Wolfe (ISW) effect as a function of redshift, covering z~0.1-2.5. Our main goal is to go beyond reporting detections towards developing a reliable likelihood analysis that allows one to determine cosmological constraints from ISW observations. With this in mind we spend a considerable amount of effort in determining the redshift-dependent bias and redshift distribution b(z)*dN/dz of these samples by matching with spectroscopic observations where available, and analyzing auto-power spectra and cross-power spectra between the samples. The data sets we use are 2-Micron All Sky Survey (2MASS) samples, Sloan Digital Sky Survey (SDSS) photometric Luminous Red Galaxies, SDSS photometric quasars and NRAO VLA Sky Survey (NVSS) radio sources. We make a joint analysis of all samples constructing a full covariance matrix, which we subsequently use for cosmological parameter fitting. We report a 3.7 sigma detection of ISW combining all the datasets. We combine the ISW likelihood function with weak lensing of CMB and CMB power spectrum to constrain the equation of state of dark energy and the curvature of the Universe. While ISW does not significantly improve the constraints in the simplest 6-parameter flat Lambda CDM model, it improves constraints on 7-parameter models with curvature by a factor of 3.2 (relative to WMAP alone) to Omega_K=-0.004^{+0.014}_{-0.020}, and with dark energy equation of state by 15% to w=-1.01^{+0.30}_{-0.40}. (Abridged.)
description: 35 pages, 18 figures, matches version to appear in PRD. Fixed bug in MCMC interface, parameter values changed by <0.2 sigma. The likelihood code can be downloaded at http://www.astro.princeton.edu/~shirley/ISW_WL.html
Fast error-safe MOID computation involving hyperbolic orbits
Creators: name: Baluev, Roman. V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Numerical Analysis (math.NA)
subject: Dynamical Systems (math.DS)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We extend our previous algorithm computing the minimum orbital intersection distance (MOID) to include hyperbolic orbits, and mixed combinations ellipse--hyperbola. The MOID is computed by finding all stationary points of the distance function, equivalent to finding all the roots of an algebraic polynomial equation of 16th degree. The updated algorithm carries about numerical errors as well, and benchmarks confirmed its numeric reliability together with high computing performance.
description: 15 pages, 5 figures, 2 tables; accepted by Astronomy & Computing
Minutes of the Annual General Meeting of the Rainbow Ranche Limited, April 15, 1944
Creators: name: Rainbow Ranche
Publisher: name: The University of British Columbia
Year: 2017

description: 2 copies of the minutes of the annual general meeting of the Rainbow Ranche Limited, April 15, 1944, signed by Mr. and Mrs. McAllister, Mr. and Mrs. Goldie; other copy signed by R.S. Dormer.
Τα αναλυτικά προγράμματα και τα βιβλία του μαθήματος των Θρησκευτικών στην πρωτοβάθμια και δευτεροβάθμια εκπαίδευση στην Σερβία (2001-2008):
Creators: name: Stosic, Randjel Zoran
Publisher: name: Aristotle University of Thessaloniki
Year: 2008
Subjects: Ορθόδοξη Εκκλησία της Σερβίας
Αναλυτικό πρόγραμμα και η ψυχοπνευματική ανάπτυξη του μαθητή
Τα βιβλία και η θρησκευτική ζωή του μαθητή
Λογική αναζήτησ του περιεχόμενου
Serbian Orthodox Church
Curriculum and student psycho-spiritual development
Teacher and Religion Course in Serbia
The books and religious creativity of student
Religious thought of student
Logical search of contenets

description: Στο πρώτο κεφάλαιο παρουσιάζεται η θέση του ΜΘ στην εκπαίδευση της Σερβίας μετά την απελευθέρωση (1878). Στο δεύτερο κεφάλαιο αναπτύχθηκε προβληματισμός γύρω από την κατηγοριοποίηση των διδακτικών στόχων, διδακτέας ύλης, μεθόδου διδασκαλίας και της αξιολόγησης. Στο τρίτο μέρος επικεντρώνεται στην μορφή και των περιεχομένων διδακτικών βιβλίων, όπως και στο αποτέλεσμα που επιδιώκεται δια μέσω αυτών
description: First chapter presents the position of religion course in education system of Serbia after the liberation (1878). Second chapter develops didactic goals, didactic materilas, didactic methods and evaluation. Third chapter focuses on form and contenets of didactic books and also focuses on result that is fullfiled through them
Exact perimeter generating function for a model of punctured staircase polygons
Creators: name: Jensen, Iwan
name: Rechnitzer, Andrew
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Combinatorics (math.CO)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We have derived the perimeter generating function of a model of punctured staircase polygons in which the internal staircase polygon is rotated by a 90degree angle with respect to the outer staircase polygon. In one approach we calculated a long series expansion for the problem and found that all the terms in the generating function can be reproduced from a linear Fuchsian differential equation of order 4. We then solved this ODE and found a closed form expression for the generating function. This is a highly unusual and most fortuitous result since ODEs of such high order very rarely permit a closed form solution. In a second approach we proved the result for the generating function exactly using combinatorial arguments. This latter solution allows many generalisations including to models with other types of punctures and to a model with any fixed number of nested rotated staircase punctures.
description: 14 pages, 2 figures, IoP style files. Extended version with Andrew Rechnitzer including combinatorial proof and many new results
A new measurement of the Collins and Sivers asymmetries on a transversely polarised deuteron target
Creators: name: Compass
name: :
name: Ageev, E. S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: New high precision measurements of the Collins and Sivers asymmetries of charged hadrons produced in deep-inelastic scattering of muons on a transversely polarised 6LiD target are presented. The data were taken in 2003 and 2004 with the COMPASS spectrometer using the muon beam of the CERN SPS at 160 GeV/c. Both the Collins and Sivers asymmetries turn out to be compatible with zero, within the present statistical errors, which are more than a factor of 2 smaller than those of the published COMPASS results from the 2002 data. The final results from the 2002, 2003 and 2004 runs are compared with naive expectations and with existing model calculations.
description: 40 pages, 28 figures
Correlation of CMB with large-scale structure: II. Weak lensing
Creators: name: Hirata, Christopher M.
name: Ho, Shirley
name: Padmanabhan, Nikhil
name: Seljak, Uros
name: Bahcall, Neta
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the correlation of gravitational lensing of the cosmic microwave background (CMB) with several tracers of large-scale structure, including luminous red galaxies (LRGs), quasars, and radio sources. The lensing field is reconstructed based on the CMB maps from the Wilkinson Microwave Anisotropy Probe (WMAP) satellite; the LRGs and quasars are observed by the Sloan Digital Sky Survey (SDSS); and the radio sources are observed in the NRAO VLA Sky Survey (NVSS). Combining all three large-scale structure samples, we find evidence for a positive cross-correlation at the $2.5σ$ level ($1.8σ$ for the SDSS samples and $2.1σ$ for NVSS); the cross-correlation amplitude is $1.06\pm 0.42$ times that expected for the WMAP cosmological parameters. Our analysis extends other recent analyses in that we carefully determine bias weighted redshift distribution of the sources, which is needed for a meaningful cosmological interpretation of the detected signal. We investigate contamination of the signal by Galactic emission, extragalactic radio and infrared sources, thermal and kinetic Sunyaev-Zel'dovich effects, and the Rees-Sciama effect, and find all of them to be negligible.
description: 34 pages, 6 figures, matches PRD accepted version
The kappa parameter and kappa-distribution in kappa-deformed statistics for the systems in an external field
Creators: name: Guo, Lina
name: Du, Jiulin
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The kappa-deformed statistics has been studied in many papers. It is naturally important question for us to ask what should the kappa parameter stand for and under what physical situation should the kappa-deformed statistics be suitable for the statistical description of a system. In this paper, we have derived a formula expression of kappa parameter based on the kappa-H theorem, the kappa-velocity distribution and the generalized Boltzmann equation in the framework of kappa-deformed statistics. We thus obtain a physical interpretation for the kappa parameter different from zero with regard to the temperature gradient and the external force field. We show that, as the q-statistics based on Tsallis entropy, the kappa-deformed statistics may also be the candidate one suitable for the statistical description of the systems in external fields when being in the nonequilibrium stationary state, but has different physical characteristics. Namely, the kappa-distribution is found to describe the nonequilibrium stationary state of the system where the external force should be vertical to the temperature gradient.
description: 8 pages, 16 references. Accepted by Phys.Lett.A
A Measurement of Source Noise at Low Frequency: Implications for Modern Interferometers
Creators: name: Morgan, John
name: Ekers, Ron
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We report on the detection of source noise in the time domain at 162MHz with the Murchison Widefield Array. During the observation the flux of our target source Virgo A (M87) contributes only $\sim$1\% to the total power detected by any single antenna, thus this source noise detection is made in an intermediate regime, where the source flux detected by the entire array is comparable with the noise from a single antenna. The magnitude of source noise detected is precisely in line with predictions. We consider the implications of source noise in this moderately strong regime on observations with current and future instruments.
description: 8 pages, 4 figures. Accepted for publication in 'Publications of the Astronomical Society of Australia'
Possible effects of tilt order on phase transitions of a fixed connectivity surface model
Creators: name: Koibuchi, Hiroshi
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We study the phase structure of a phantom tethered surface model shedding light on the internal degrees of freedom (IDOF), which correspond to the three-dimensional rod like structure of the lipid molecules. The so-called tilt order is assumed as IDOF on the surface model. The model is defined by combining the conventional spherical surface model and the XY model, which describes not only the interaction between lipids but also the interaction between the lipids and the surface. The interaction strength between IDOF and the surface varies depending on the interaction strength between the variables of IDOF. We know that the model without IDOF undergoes a first-order transition of surface fluctuations and a first-order collapsing transition. We observe in this paper that the order of the surface fluctuation transition changes from first-order to second-order and to higher-order with increasing strength of the interaction between IDOF variables. On the contrary, the order of collapsing transition remains first-order and is not influenced by the presence of IDOF.
description: 20 pages, 14 figures
Edmontosaurus Lambe 1917
Creators: name: Erickson, Gregory M.
name: Kenneth H. Olson
Publisher: name: Zenodo
Year: 1996
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Dinosauria
Hadrosauridae
Edmontosaurus

description: An additional specimen, a proximal pedal phalanx of Edmontosaurus sp.
 (University of California, Museum of Paleontology; cast 140601) from the same general vicinity as the Triceratops pelvis, shows T. rexlike bite marks (i.e. broad and deep elongate bite furrows). The element has five bite mark furrows distributed axially on its dorsal and lateral surfaces (Fig. 4). The largest furrow is 5.4 cm long and 0.9 cm deep. The bite furrows are deeper toward the proximal end of the element, suggesting that the tyrannosaur was pulling away from the carcass as it produced the bite marks. No serration marks are evident on the specimen.
description: Published as part of Erickson, Gregory M. & Kenneth H. Olson, 1996, Bite marks attributable to Tyrannosaurus rex: preliminary description and implications, pp. 175-178 in Journal of Vertebrate Paleontology 16 (1) on page 175, DOI: 10.1080/02724634.1996.10011297, http://zenodo.org/record/3732430
title: Sinus coronary dissection during percutaneous coronary intervention
Creators: name: Muscogiuri, Giuseppe
Publisher: name: EURORAD
Year: 2022
Subjects: subject: Cardiovascular
subject: Cardiac
subject: Cardiovascular system
subject: CT
subject: Clinical Cases

description: Clinical History: A 78-year-old female was admitted to the emergency department with thoracic pain and discomfort. She had several cardiovascular risk factors, including hypertension, dyslipidaemia, a family history of CAD, and was an active smoker. An electrocardiogram showed lateral T-wave inversion. All cardiac enzymes were slightly elevated.

Considering these findings, an echocardiogram and invasive coronary angiography (ICA) were performed.

description: 78 years, female
Differential Flatness of Electric Power Systems
Creators: name: Uecker, Lucas
Publisher: name: Zenodo
Year: 2014
Subjects: Differential Flatness
Modeling
Nonlinear Control
Power Generation
Simulation
Trajectory Planning
Electrical engineering

description: This thesis shows that the flux-decay model of a synchronous generator exhibits the property of differential flatness. This property is used for trajectory planning of simple power systems, where generators are represented by flux-decay models, as the property allows for one-to-one correspondence between the inputs of a system and particular (flat) outputs. The flat outputs of the generators are taken to be the injected network-frame currents, with control inputs being the exciter reference voltages and the turbine speed governor set-points. The utility of differential flatness is shown for open loop control of a single machine, infinite-bus system, a simple linearizing feedback controller for a multi-machine system as well as a simple tracking application in a multi-machine system with time varying loads. These sample applications show that flatness-based methods can enable coordinated control for both the multiple inputs of a generator, but also may be used as part of feedback control of a generator or power system involving multiple generators. Sensitivity of the flatness approach to uncertainty in the model and its parameters is explored. Model uncertainty is investigated by implementation of flatness-based control on a higher order model, and parameter uncertainty is investigated via application of trajectory sensitivities. These tests show the extent to which parameters needed for trajectory planning affect transient and steady-state tracking errors.
description: 67 pages, Masters Thesis, Electrical Engineering
Distortion of Gravitational-wave Signals by Astrophysical Environments
Creators: name: Chen, Xian
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Many objects discovered by LIGO and Virgo are peculiar because they fall in a mass range which in the past was considered unpopulated by compact object. Given the significance of the astrophysical implications, it is important to first understand how their masses are measured from gravitational-wave signals. How accurate is the measurement? Are there elements missing in our current model which may result in a bias? This chapter is dedicated to these questions. In particular, we will highlight several astrophysical factors which are not included in the standard model of GW sources but could result in a significant bias in the estimation of the mass. These factors include strong gravitational lensing, the relative motion of the source, a nearby massive object, and a gaseous background.
description: 23 pages. This is a contribution to the "Handbook of Gravitational Wave Astronomy" (Eds. C. Bambi, S. Katsanevas and K. Kokkotas; Springer Singapore, 2021). Comments welcome!
Chandra monitoring of the very massive binary WR20a and the young massive cluster Westerlund2
Creators: name: Naze, Yael
name: Rauw, Gregor
name: Manfroid, Jean
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Results: The two Wolf-Rayet stars WR20a (WN6ha+WN6ha) and WR20b (WN6ha) were analyzed in detail. They are both very luminous and display very hard spectra, but WR20b does not seem to vary. On the contrary, WR20a, a known eclipsing, colliding-wind binary, brightens in the X-ray domain during the eclipses, i.e. when the collision is seen face-on. This can be explained by the properties of the wind-wind collision zone, whose high density leads to a large absorbing column (2 10^24 cm^-2).All twelve O-type stars previously classified spectroscopically, two eclipsing binaries previously identified and nine newly identified O-type star candidates are detected in the high energy domain; ten of them could be analyzed spectroscopically. Four are overluminous, but the others present typical L_X/L_BOL ratios, suggesting that several O-type objects are actually binaries. Variability at the ~2sigma level was detected for a majority of the sources, of unknown origin for the putatively single objects. Faint, soft, diffuse emission pervades the entire field-of-view but no clear structure can be identified, even at the position of a blister proposed to be at the origin of the TeV source HESS J1023-575. Finally, the X-ray properties of PMS objects were also investigated, in particular the brightest flaring ones. They provided an additional argument in favor of a large distance (~8kpc) for the cluster.
description: accepted by A&A, 10 pages, 7 figures (available in jpg)
Comparison between AMH levels with total oocyte, total embryo, embryo quality, and pregnancy on in vitro fertilization patient at Aster fertility clinic Hasan Sadikin hospital in 2015-2016
Creators: name: Christofani Ekapatria
name: Ruswana Anwar
name: Mulyanusa Ritonga
Publisher: name: F1000 Research Limited
Year: 2019

description: There are few factors that can caused assisted reproductive technology (ART) failure, one of them is not enough mature and normal oocytes collected after controlled ovarian hyperstimulation. Ovarian aging is characterized by a gradual decrease in both the quantity and quality of the oocytes within the follicle. The availability of tests capable of providing good information about female ovarian reserves in certain age categories is important for the success of ART. Anti Mullerian Hormone (AMH) is a quantitative biomarker that can be used to determine ovarian reserves.

The primary objective of this study was to know the relevance between AMH levels and numbers off oocyte, numbers of embryo, quality of the embryos and fertility rate in IVF.

We retrospectively analyzed the medical records of 60 women who underwent IVF/ICSI-ET cycles at ASTER fertility clinic Hasan Sadikin Hospital

Sixty patients were included. There was a statistically significant correlation between serum AMH and number of retrieved oocytes (p < 0.001) also with number of embryo fertilized (p = 0.018). But there are no significant statistic correlation between serum AMH and the embryo quality (p = 0.290) and pregnancy outcome (p = 0.474)

The use of serum AMH levels on IVF/ICSI-ET will be of considerable benefit. The observed positive correlation between serum AMH and ART success especially overian reserve will require further research with larger sampling to refine the role of AMH
The construction of practical knowledge by physical education preservice teachers during the practicum experience
Creators: name: Partridge, David
Publisher: name: University of British Columbia
Year: 2009

description: Using a qualitative case study approach, the purpose of the study was to explore the nature of the practical knowledge about teaching constructed by physical education preservice teachers during their practicum experience, that is, to gain insights into the 'sense making' process in which preservice teachers engage as they learn to teach during this experience. In addition, the study examined the factors which enhance or constrain this constructive process. The data analysis was guided by two research questions: What is the nature of the practical knowledge about teaching constructed by physical education preservice teachers during their practicum experience?; and what factors influence (enhance or constrain) the development of this knowledge during the practicum experience? The study was situated within the everyday experiences of four physical education preservice teachers as they completed an extended (thirteen week) practicum in secondary school settings. The methods used to collect data were those associated with qualitative case studies. They included lesson observations, in-depth interviewing, video and stimulated recall sessions of lessons taught by the participants, and journal writing. Separate cases have been written for each of the four participants, while the final chapter discusses the substantive issues that have arisen from the study. There were a number of conclusions that emerged from the study. With regards to the nature of practical knowledge constructed by preservice teachers the findings include its thematic development, the dynamic transformation of 'knowing that' into 'knowing how', how practical knowledge was evident but rarely heard in the practice of preservice teachers, and the role of each participant's image of himself or herself as a physical educator. A number of factors were identified that enhanced or constrained this process. These factors include prior coaching experiences, the role of sponsor teachers, the impact of university faculty advisors, video and stimulated recall sessions, and the teaching of a second subject by each participant. The study concludes by outlining a number of implications for teacher education. First, it suggests that during their teacher education program preservice teachers need to be taught how to learn from experience and that sponsor teachers have a key role to play in this process. Second, that biography has a significant impact in directing what and how preservice teachers learn about teaching during a practicum and that preservice teachers must be encouraged to examine and look beyond their own experiences when learning how to teach.
A Possible Correlation between the Gaseous Drag Strength and Resonant Planetesimals in Planetary Systems
Creators: name: Jiang, Ing-Guey
name: Yeh, Li-Chin
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the migration and resonant capture of planetesimals in a planetary system consisting of a gaseous disc analogous to the primordial solar nebula and a Neptune-like planet. Using a simple treatment of the drag force we find that planetesimals are mainly trapped in the 3:2 and 2:1 resonances and that the resonant populations are correlated with the gaseous drag strength in a sense that the 3:2 resonant population increases with the stronger gaseous drag, but the 2:1 resonant population does not. Since planetesimals can lead to the formation of larger bodies similar to asteroids and Kuiper Belt Objects, the gaseous drag can play an important role in the configuration of a planetary system.
description: accepted for publication in The Astrophysical Journal
Χρήση νέων εργαλείων πληροφοριακής τεχνολογίας στον εσωτερικό έλεγχο των επιχειρήσεων:
Creators: name: Δρόσος, Αντώνης Μιχαήλ
Publisher: name: Aristotle University of Thessaloniki
Year: 2009
Subjects: Εσωτερικός έλεγχος
Λογισμικό εσωτερικού ελέγχου
Τεχνικές εξόρυξης δεδομένων
Νευρωνικά δίκτυα
TopCaats
Internal audit software
Data mining techniques
Neural networks

description: Η παρούσα εργασία ασχολείται με ένα θέμα που απασχολεί όλο και περισσότερο την κοινωνία μας. Τον εσωτερικό έλεγχο.Μεγάλεςεπιχειρήσεις παρουσιάζουν παραποιημένες χρηματοοικονομικές καταστάσεις με καταστροφικές συνέπειες για ολόκληρα κράτη. Αυτό κάνει ακόμα πιο σημαντική την αξία του εσωτερικού ελέγχου. Αφού γίνεται μια αναφορά σε όλες τις καινούργιες τεχνολογίες που χρησιμοποιούνται στον εσωτερικό έλεγχο και τα βασικά τους στοιχεία ,το λογισμικό εσωτερικού ελέγχου, τα νευρωνικά δίκτυα, τις τεχνικές εξόρυξης δεδομένων (δένδρα αποφάσεων, διανυσματικές μηχανές υποστήριξης, Μπαεσιανά δίκτυα πεποίθησης), αναφέρεται η προηγούμενη βιβλιογραφία που υπάρχει μέχρι σήμερα. Έπειτα παρουσιάζεται το TopCAATs ένα λογισμικό εσωτερικού ελέγχου το οποίο στη συνέχεια χρησιμοποιείται με πραγματικά δεδομένα από μια επιχείρηση και αναλύονται τα αποτελέσματα πραγματοποιώντας ένα μικρό εσωτερικό έλεγχο. Τέλος παρουσιάζονται τα συμπεράσματα της έρευνας.
description: The present work deals with a subject that occupies more and more our society. The internal control. Big enterprises present counterfeited financing situations with devastating consequences for entire states. This makes still more important the value of internal control. After becomes a report in the all new technologies that are used in the internal control and their basic elements, the software of internal control, neural networks, the data mining techniques (trees of decisions, support vector machines , Bayesian Belief networks), are reported in the previous bibliography that exists up to today.Then is presented TopCAATs a software of internal control which afterwards is used with real data from an enterprise and is analyzed the results realizing a small internal control. Finally are presented the conclusions of research.
title: Malignant peripheral nerve sheath tumor of the brachial plexus
Creators: name: Ivanac, Gordana
Publisher: name: EURORAD
Year: 2022
Subjects: subject: Neuroradiology
subject: Neuroradiology peripheral nerve
subject: MR
subject: MR-Diffusion/Perfusion
subject: Ultrasound
subject: Ultrasound-Colour Doppler
subject: Clinical Cases

description: Clinical History: A 45-year-old patient without any significant medical or family history was referred to our radiology department by the plastic surgeon due to paraesthesia in her left arm and rapidly growing palpable painful mass in her left axillary region during last two months.

description: 45 years, female
QCD corrections to double J/ψproduction in e+e- annihilation at \sqrt{s}=10.6 GeV
Creators: name: Gong, Bin
name: Wang, Jian-Xiong
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Next-to-Leading-Order(NLO) QCD corrections to double J/psi production in e^+e^- annihilation at sqrt{s}=10.6 GeV are calculated. We find that they greatly decrease the cross section, with a K factor (NLO/LO) ranging from -0.31 to 0.25 depending on the renormalization scale. Although the renormalization scale dependence indicates a large uncertainty, when combined with the NLO QCD corrections to J/psi + eta_c production, it can explain why the double J/psi$ production could not be found at B factories while the J/psi + eta_c production could, despite the fact that cross section of the former is larger than that of the latter at LO by a factor of 1.8.
description: 4 pages, 4 figures, use revtex4
Is the Luna stratification intrinsic?
Creators: name: Kuttler, J.
name: Reichstein, Z.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Algebraic Geometry (math.AG)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 14R20

description: Let G -> \GL(V) be a finite-dimensional linear representation of a reductive linear algebraic group G on a finite-dimensional vector space V, defined over an algebraically closed field of characteristic zero. The categorical quotient V//G carries a natural stratification, due to D. Luna. This paper addresses the following questions: (i) Is the Luna stratification of X intrinsic? That is, does every automorphism of V//G map each stratum to another stratum? (ii) Are the individual Luna strata in X intrinsic? That is, does every automorphism of V//G maps each stratum to itself? In general, the Luna stratification is not intrinsic. Nevertheless, we give positive answers to questions (i) and (ii) for large classes of interesting representations.
description: 27 pages
Η πρόσληψη των λογοτεχνικών κειμένων από μαθητές του Δημοτικού Σχολείου : Αξιοποίηση μαθητικών κειμένων από το πρόγραμμα της Σκυταλοδρομίας Ανάγνωσης:
Creators: name: Βρέζα, Ελένη Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2008
Subjects: Θεωρίες πρόσληψης
Διδασκαλία λογοτεχνίας
Δημοτικό Σχολείο
Σκυταλοδρομία ανάγνωσης
Reception theories
Teaching of literature
Primary school
Relay race reading program

description: Η παρούσα εργασία εξετάζει μία τυχαία σειρά κειμένων που συντάχθηκαν από μαθητές και μαθήτριες Δημοτικών Σχολείων κατά τη διάρκεια του σχολικού έτους 2001-2002 στα πλαίσια του Προγράμματος της «Σκυταλοδρομίας Ανάγνωσης» που συνδιοργανώθηκε από τα Υπουργεία Πολιτισμού και Παιδείας και το Εθνικό Κέντρο Βιβλίου. Ο σχεδιασμός και η υλοποίηση του προγράμματος καθώς και η εξέταση των κειμένων των παιδιών βασίστηκαν στις Θεωρίες της Πρόσληψης. Ποσοτικά και ποιοτικά στοιχεία που προκύπτουν από την εργασία καθώς και μαρτυρίες εκπαιδευτικών αποδεικνύουν ότι η εφαρμογή των Θεωριών της Πρόσληψης και η ανάγνωση ολόκληρων βιβλίων παράλληλα με την εφαρμογή εκπαιδευτικών στρατηγικών που βασίζονται στις θεωρίες της πρόσληψης πλουτίζουν και βαθαίνουν την αναγνωστική ανταπόκριση των παιδιών και εδραιώνουν μια ουσιαστική και δημιουργική σχέση με τη λογοτεχνία.
description: The present study examines a random sequence of texts which were written by students of primary schools during the school year 2001-2002 in terms of the Program “Relay Race Reading” which was co-organized by the Ministries of Culture and Education and the National Book Center. The planning and application of the program as the well as the examination of children’s texts were based in Reception Theories. Quality and quantity evidence which arise from the study and also evidence from teachers prove that the application of Reception Theories and the reading of whole books as well as the application of reception-based educational strategies enrich and deepen children’s literature perception and establish a meaningful and creative relationship with literature.
title: Primary pancreatic lymphoma with hepatic and renal involvement
Creators: name: Agnello, Francesco
Publisher: name: EURORAD
Year: 2022
Subjects: subject: Abdominal imaging
subject: Abdomen
subject: Oncology
subject: CT
subject: MR
subject: Clinical Cases

description: Clinical History: A 54-year-old woman was admitted to our emergency department because of epigastric pain, and unexplained weight loss. Her medical history was unremarkable. Laboratory analysis revealed elevation of transaminases (alanine aminotransferase, 171 U/L [reference values 7-45 U/L]; aspartate aminotransferase, 250 U/L [reference values, 19- 25 U/L]), amylase (261 U/L [28-100 U/L]), lipase (598 U/L [13-60 U/L]), bilirubin (total 2.2 mg/dL [reference values; 1-1.3 mg/dL]; direct 2.1 mg/dL [01-0.3 mg/dL]).

description: 54 years, female
Minutes of meeting of the Trustees of the Winfield and Okanagan Centre Irrigation District, May 10, 1944
Creators: name: Trustees Of The Winfield And Okanagan Centre Irrigation District
Publisher: name: The University of British Columbia
Year: 2017

description: Minutes of meeting of the Trustees of the Winfield and Okanagan Centre Irrigation District, dated May 10, 1944, regarding the Beaver Lake dam.
Εφαρμογή του γενετικού αλγορίθμου NSGA:II για τον καθορισμό βέλτιστης τροχιάς σε μη επανδρωμένα αεροσκάφη
Creators: name: Κωνσταντινίδης, Ιωάννης Θεόδωρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2009
Subjects: Γενετικός Αλγόριθμος Πολλαπλών Αντικειμενικών συναρτήσεων
Γενετικός αλγόριθμος ταξινόμησης με βάση τη μη κυριαρχία
Μη επανδρωμένο Αεροσκάφος
Σημεία Προορισμού
Multiple objective genetic algorithms
NSGA-II Non dominated sorting genetic algorithm
UAV-Unmanned Air vehicles
Waypoints

description: Αρχικά γίνεται μια περιγραφή των τεχνικών που χρησιμοποιούνται για την παραγωγή των σημείων προορισμού και των τεχνικών για τη μοντελοποίηση της τροχιάς με βάση τα σημεία αυτά. Στη συνέχεια επεξηγούνται οι γενετικοί αλγόριθμοι ως μια σύγχρονη μέθοδος καθορισμού τροχιάς και περιγράφονται αναλυτικά η ορολογία και οι αρχές που εφαρμόζονται κατά την επίλυση πολλαπλών αντικειμενικών συναρτήσεων όπως το πρόβλημα της παρούσας εργασίας. Αναλύεται βήμα προς βήμα ο γενετικός αλγόριθμος NSGA-II και εφαρμόζεται σε περιβάλλον MATLAB για τον καθορισμό βέλτιστης τροχιάς σε μη επανδρωμένα αεροσκάφη υπό διάφορες συνθήκες. Με βάση τα αποτελέσματα, προκύπτουν κάποια συμπεράσματα που αφορούν τόσο τη χρήση γενετικών αλγορίθμων, όσο και του NSGA-II ειδικότερα.
description: At the beginning there is a description of the methods used for the production of the waypoints and of the techniques applied for the modelling of the ILAV's path. then the theory of Genetic Algorithms is further explained as a modern technique for path planning. The terminology and the main principles applied for solving Multiple Objective Optimization Problems, as the problem of the current essay, are anallytically presented. The NSGA II genetic algorithm is described step by step and then is programmed in Matlab environment, in order to provide a user with the best path for a UAV flying under extremely dificult conditions based on the results, some conclusions are made concerning the use of genetic algorithms in general, and the use of NSGA III more specifically.
description: Σε συνεργασία με:Λογιστικής και Χρηματοοικονομικής (Πανεπιστήμιο Μακεδονίας)
Urban runoff quality and quantity control: a functional comparison of various types of detention basins
Creators: name: Proteau, Kelly
name: Binesh, Negin
name: Duchesne, Sophie
name: Pelletier, Geneviève
name: Lavoie, Isabelle
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Space Science
subject: Cell Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Plant Biology

description: Hydraulic behavior and pollutant removal efficiency of three stormwater end-of-pipe control structures were evaluated and compared. Three detention basins (wet, dry, and semi-dry, i.e. dry with a wet central channel) were monitored within three sites of Southern Quebec, Canada. Water samples were collected upstream and downstream of the basins and analyzed for total suspended solids (TSS), nitrogen, total phosphorous, and ions related to de-icing salts. Generalized linear models and hydrological/hydraulic (SWMM) models were developed to compute the long-term TSS and total phosphorous load removal efficiency for two of the studied basins. Results indicate that even when considering uncertainties, removal rates are the highest for the wet basin and the lowest for the dry one. The addition of a wet channel in the semi-dry basin leads to higher removal efficiency than in the dry basin (e.g. median TSS concentration removal of 69% and 14%, respectively, for the semi-dry and dry basins).
Γεννήτριες τυχαίων αριθμών και κυψελικά αυτόματα:
Creators: name: Μουστάκας, Επαμεινώνδας Στέφανου
Publisher: name: Aristotle University of Thessaloniki
Year: 2009
Subjects: Τυχαίος αριθμός
Γεννήτριες τυχαίων αριθμών
Αλγόριθμοι τυχαίων αριθμών
Κυψελικά αυτόματα
Random number generators
Algorithms of random numbers
Cellular automata

description: Σε αυτή την διπλωματική εργασία εξετάζουμε την έννοια της τυχαίας ακολουθίας, ώστε να αποτελεί πραγμάτωσ=ση μίας τυχαίας διαδικασίας και αναλύουμε διάφορους αλγόριθμους παραγωγής τυχαίων αριθμων.
description: In this thesis we examine the concept of a random sequence realizing a random process and review several different algorithms for random number generation, as well as ways of analyzing a sequence of numbers to determine how likely it is to come from a random process. We investigate the ability of cellular automata to produce random numbers. As this possibility is very different from the other already established methods for generation of random numbers, we examine in addition: 1) the mathematics of random number generators, which the congruential as they are the most prevalent type in use today and 2) different statistical tests to assess the randomness and to detect the non-randomness in each of these generators.