cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Robustness of Lord’s Formulas for Item Difficulty and Discrimination Conversions Between Classical and Item Response Theory Models
Creators: name: Dawber, Teresa
name: Rogers, W. Todd
name: Carbonaro, Michael
Publisher: name: Alberta Journal of Educational Research
Year: 2010

description: Lord (1980) proposed formulas that provide direct relationships between IRT discrimination and difficulty parameters and conventional item statistics. The purpose of the present study was to determine the robustness of the formulas beyond the initial and restrictive conditions identified by Lord. Simulation and real achievement data were employed. Results from the simulation study indicate that the item discrimination parameters were recovered quite well for low to moderately discriminating items regardless of ability distribution, and the difficulty parameters were recovered quite well for the range typically found for achievement tests. Results of the real data were consistent with those found for the simulation study.
description: Alberta Journal of Educational Research, Vol. 55 No. 4 (2009): Winter 2009
Improved power loss estimation for device- to system-level analysis
Creators: name: Amyotte, Matthieu
Publisher: name: University of British Columbia
Year: 2019

description: Power converters are found nearly everywhere electric power is used and are ubiquitous in renewable energy generation and electric vehicles. All power converters suffer from losses, Modern power converters have very high efficiency, often reaching peak efficiency > 95%. However, the losses in these systems are still significant and must be considered for thermal and financial purposes. To enable maximum loss reduction, accurate estimation of the losses at the design stage is mandatory. Gallium Nitride (GaN) power switches are an emerging technology due to their high efficiency operation and smaller size compared to traditional Silicon devices. To date, simplistic power loss models have been employed for loss predication and thermal management design with Gallium Nitride (GaN). However, these simplistic models do not provide accurate loss prediction, resulting in over-design of the thermal management systems. This work proposes a comprehensive method to predict losses in GaN devices using high-accuracy thermal measurement. The proposed model is validated experimentally and provides a four-fold increase in loss predication accuracy compared to traditional methods. Having established accurate converter-level loss prediction, a higher level of abstraction is then considered. Existing system-level analysis focuses on distribution losses and oversimplifies converter losses by assuming fixed efficiency. In reality, converter losses are highly variable under different operating conditions. In this work, the Rapid Loss Estimation equation (RLEE) is proposed to provide computationally simple loss prediction under all operating conditions. The RLEE extracts detailed loss behavior from multi-domain simulation into a computationally simple parametric equation. Using the RLEE high accuracy and high speed loss estimation is obtained, as demonstrated in a DC microgrid with three different converters. Ultimately, the tools developed in this work improve loss estimation in power converters from the component level up to the system level. The proposed techniques, while explained through specific examples, are widely applicable and can be readily implemented to other devices, topologies and systems. Improved loss estimation is valuable at all levels, from designing thermal management systems for individual devices in a converter to optimizing the financial outcomes of a complex grid with multiple power converters.
Nodeless two-gap superconductivity in stoichiometric iron pnictide LiFeAs
Creators: name: Kim, H.
name: Tanatar, M. A.
name: Song, Yoo Jang
name: Kwon, Yong Seung
name: Prozorov, R.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The variations of in- and inter- plane London penetration depths, $Δλ(T)$, were measured using a tunnel diode resonator in single crystals of the intrinsic pnictide superconductor LiFeAs. This compound appears to be in the clean limit with a residual resistivity of 4 ($T\to0$) to 8 ($T_c$) $μΩ\cdot$cm and $RRR$ of 65 to 35, respectively. The superfluid density, $ρ_s(T)=λ^2(0)/λ^2(T)$, is well described by the self-consistent two-gap $γ-$model. Together with the previous data, our results support the universal evolution of the superconducting gap from nodeless to nodal upon departure from optimal doping. We also conclude that pairbreaking scattering plays an important role in the deviation of the low-temperature behavior of $λ(T)$ from exponential in Fe-based compounds.
The Consequential Validity of Student Ratings: What do Instructors Really Think?
Creators: name: Beran, Tanya N.
name: Rokosh, Jennifer L.
Publisher: name: Alberta Journal of Educational Research
Year: 2010

description: This study investigates instructors’ perceptions about strengths and weaknesses of a student ratings instrument employed in their university. The sample consisted of 357 instructors in a major Canadian university where each term students are required to complete an evaluation at the end of every course. Qualitative analyses of their written responses indicate that most instructors held negative views about the ratings instrument, administration procedures, and use of results. They also reported concerns about biasing factors and the negative effect that ratings have on instructors. Few instructors provided positive comments about the validity of the ratings, the utility of ratings for the user groups, accountability, student representation, and cost efficient administration procedures. Moreover, only 25% considered ratings useful for improving teaching effectiveness.
description: Alberta Journal of Educational Research, Vol. 55 No. 4 (2009): Winter 2009
Influence of Role Models and Mentors on Female Graduate Students’ Choice of Science as a Career
Creators: name: Fried, Toni
name: MacCleave, Anne
Publisher: name: Alberta Journal of Educational Research
Year: 2010

description: The purpose of this study was to examine the source, nature, and degree of influence of role models and mentors on female graduate students’ choice of science as a career. Also examined was the existence of gender or area-of-study (engineering, biological science, physical sciences) differences. Results of a factor analysis of the Influence of Others on Academic and Career Decisions Scale (IOACDS, Nauta & Kokaly, 2001) demonstrated that role models and mentors influenced students in distinct ways. Significant gender, area-of-study, and undergraduate country differences were found.
description: Alberta Journal of Educational Research, Vol. 55 No. 4 (2009): Winter 2009
Weighing the Local Interstellar Medium using Gamma Rays and Dust
Creators: name: Widmark, Axel
name: Korsmeier, Michael
name: Linden, Tim
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Cold gas forms a significant mass fraction of the Milky Way disk, but is its most uncertain baryonic component. The density and distribution of cold gas is of critical importance for Milky Way dynamics, as well as models of stellar and galactic evolution. Previous studies have used correlations between gas and dust to obtain high-resolution measurements of cold gas, but with large normalization uncertainties. We present a novel approach that uses Fermi-LAT $γ$-ray data to measure the total gas density, achieving a similar precision as previous works, but with independent systematic uncertainties. Notably, our results have sufficient precision to probe the range of results obtained by current world-leading experiments.
description: 5 pages, 3 figures; appendix adds 13 pages, 6 figures; in review for PRL
Dynamics of Education Policy and Practice for Urban Aboriginal Early School Leavers
Creators: name: Wishart, Diane
Publisher: name: Alberta Journal of Educational Research
Year: 2010

description: In this study I explore a lack of cohesion between two Alberta government policy documents that are intended to address the problem of early school leaving of disenfranchised urban Aboriginal youth. The research explores the question of whether this lack of cohesion is reflected in educational practice for this population of learners. This issue is further examined through exploration of an inner-city high school that is designed to meet the needs of a disenfranchised urban population generally while meeting the specific educational needs of Aboriginal students who constitute most of its student population. The need for this analysis is given context by the relatively few disenfranchised urban Aboriginal youth who complete high school in Alberta. Although this study focuses on an Alberta inner-city school, the low completion rates for this population are in evidence throughout Canada and elsewhere across the globe.
description: Alberta Journal of Educational Research, Vol. 55 No. 4 (2009): Winter 2009
Domenico Losurdo 1941-2018, in memoriam
Creators: name: Azzarà, Stefano G.
Publisher: name: Materialismo Storico
Year: 2018

description: Per questa sezione non sono previsti abstract.
description: Materialismo Storico, N. 1 (2018): Rivoluzioni e restaurazioni, guerre e grandi crisi storiche: cento anni dall'Ottobre russo (Parte seconda)
Understanding Aboriginal Learning Ideology Through Storywork with Elders
Creators: name: Atleo, Marlene R.
Publisher: name: Alberta Journal of Educational Research
Year: 2010

description: Five Nuu-chah-nulth Elders engaged in the examination of a Nuu-chah-nulth story for what they considered learning. A network of eight learning archetypes inhabited the story to demonstrate a range of learning strategies. The Elders identified features central to a cultural learning project, which included prenatal care and grandparent teaching, spiritual bathing, partnerships, ritual sites, and ancestor names. Learning strategies were understood as embedded and embodied in the form of characters displaying the archetypes. The storywork process used by the Elders, systematized as phenomenological orienteering and operationalized as metaphorical mapping, was found to be a useful methodology.
description: Alberta Journal of Educational Research, Vol. 55 No. 4 (2009): Winter 2009
Covariance, correlation matrix and the multi-scale community structure of networks
Creators: name: Shen, Hua-Wei
name: Cheng, Xue-Qi
name: Fang, Bin-Xing
Publisher: name: arXiv
Year: 2010
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: Empirical studies show that real world networks often exhibit multiple scales of topological descriptions. However, it is still an open problem how to identify the intrinsic multiple scales of networks. In this article, we consider detecting the multi-scale community structure of network from the perspective of dimension reduction. According to this perspective, a covariance matrix of network is defined to uncover the multi-scale community structure through the translation and rotation transformations. It is proved that the covariance matrix is the unbiased version of the well-known modularity matrix. We then point out that the translation and rotation transformations fail to deal with the heterogeneous network, which is very common in nature and society. To address this problem, a correlation matrix is proposed through introducing the rescaling transformation into the covariance matrix. Extensive tests on real world and artificial networks demonstrate that the correlation matrix significantly outperforms the covariance matrix, identically the modularity matrix, as regards identifying the multi-scale community structure of network. This work provides a novel perspective to the identification of community structure and thus various dimension reduction methods might be used for the identification of community structure. Through introducing the correlation matrix, we further conclude that the rescaling transformation is crucial to identify the multi-scale community structure of network, as well as the translation and rotation transformations.
description: 10 pages, 7 figures
Joint distribution of two Local Times for diffusion processes with the application to the construction of various conditioned processes
Creators: name: Mazzolo, Alain
name: Monthus, Cécile
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: For a diffusion process $X(t)$ of drift $μ(x)$ and of diffusion coefficient $D=1/2$, we study the joint distribution of the two local times $A(t)= \int_{0}^{t} dτδ(X(τ)) $ and $B(t)= \int_{0}^{t} dτδ(X(τ)-L) $ at positions $x=0$ and $x=L$, as well as the simpler statistics of their sum $ Σ(t)=A(t)+B(t)$. Their asymptotic statistics for large time $t \to + \infty$ involves two very different cases : (i) when the diffusion process $X(t)$ is transient, the two local times $[A(t);B(t)]$ remain finite random variables $[A^*(\infty),B^*(\infty)]$ and we analyze their limiting joint distribution ; (ii) when the diffusion process $X(t)$ is recurrent, we describe the large deviations properties of the two intensive local times $a = \frac{A(t)}{t}$ and $b = \frac{B(t)}{t}$ and of their intensive sum $σ= \frac{Σ(t)}{t}=a+b$. These properties are then used to construct various conditioned processes $[X^*(t),A^*(t),B^*(t)]$ satisfying certain constraints involving the two local times, thereby generalizing our previous work [arXiv:2205.15818] concerning the conditioning with respect to a single local time $A(t)$. In particular for the infinite time horizon $T \to +\infty$, we consider the conditioning towards the finite asymptotic values $[A^*(\infty),B^*(\infty)]$ or $Σ^*(\infty) $, as well as the conditioning towards the intensive values $[a^*,b^*] $ or $σ^*$, that can be compared with the appropriate 'canonical conditioning' based on the generating function of the local times in the regime of large deviations. This general construction is then applied to the simplest case where the unconditioned diffusion is the Brownian motion of uniform drift $μ$.
description: 49 pages, 4 figures, final version. arXiv admin note: text overlap with arXiv:2205.15818
Optical Gain in Carbon Nanotubes
Creators: name: Gaufrès, Etienne
name: Izard, Nicolas
name: Roux, Xavier Le
name: Marris-Morini, Delphine
name: Kazaoui, Saïd
name: Cassan, Eric
name: Vivien, Laurent
Publisher: name: arXiv
Year: 2010
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Semiconducting single-wall carbon nanotubes (s-SWNTs) have proved to be promising material for nanophotonics and optoelectronics. Due to the possibility of tuning their direct band gap and controlling excitonic recombinations in the near-infrared wavelength range, s-SWNT can be used as efficient light emitters. We report the first experimental demonstration of room temperature intrinsic optical gain as high as 190 cm-1 at a wavelength of 1.3 μm in a thin film doped with s-SWNT. These results constitute a significant milestone toward the development of laser sources based on carbon nanotubes for future high performance integrated circuits.
description: 4 figures
Hacia un modelo para integrar la gestión y la comunicación de la producción científica del CSIC
Creators: name: Bernal, Isabel
name: Unidad De Coordinación De Bibliotecas Del CSIC
Publisher: name: Digital.CSIC
Year: 2011
Subjects: Sistema de Información Científica del CSIC
ConCiencia
Armonización de políticas
El futuro papel de los bibliotecarios
DIGITAL.CSIC
Gestión y difusión de información científica
Scientific Information System
Policies harmonization
Future role of librarians
Management and dissemination of institutional outputs

description: La presentación fue parte del Seminario Library Connect "Los recursos de Elsevier y el futuro papel de los biblitecarios" celebrado en Málaga el 26 de mayo de 2011, dentro del marco de las Jornadas FESABID.
Cento anni dalla Rivoluzione d’ottobre: rivoluzione sociale e rivoluzione anticoloniale
Creators: name: Losurdo, Domenico
Publisher: name: Materialismo Storico
Year: 2018

description: One hundred years after the October Revolution, we can try to make an assessment of its outcomes and heritage. But if we just focus on the construction of a post-capitalistic society, of socialism, our evaluation will be partial, incomplete and unable to allow an understanding of the past and the current times. So, we have to tackle this issue from a double perspective: looking to the construction of socialism but looking also to the struggle against colonial domination, against imperialism. The result of a reflection on these two levels is on one side that the movement started from the October Revolution led to the vanishing of the colonial classic system, and on the other side that the construction of socialism is a troubled process of political, economical and intellectual apprehension that is unavoidably full of contradictions. This process is still in progress – in China, for instance. On the other hand, today neocolonialism carries on the tradition of exploitation and domination, generating the premises of a new large-scale war. The construction of a post-capitalistic society is once again strictly connected with the cause of peace.

Keywords: October Revolution; Socialism; Colonialism; Anti-colonial Revolutions; China.
One hundred years after the October Revolution, we can try to make an assessment of its outcomes and heritage. But if we just focus on the construction of a post-capitalistic society, of socialism, our evaluation will be partial, incomplete and unable to allow an understanding of the past and the current times. So, we have to tackle this issue from a double perspective: looking to the construction of socialism but looking also to the struggle against colonial domination, against imperialism. The result of a reflection on these two levels is on one side that the movement started from the October Revolution led to the vanishing of the colonial classic system, and on the other side that the construction of socialism is a troubled process of political, economical and intellectual apprehension that is unavoidably full of contradictions. This process is still in progress – in China, for instance. On the other hand, today neocolonialism carries on the tradition of exploitation and domination, generating the premises of a new large-scale war. The construction of a post-capitalistic society is once again strictly connected with the cause of peace.
Keywords: October Revolution; Socialism; Colonialism; Anti-colonial Revolutions; China.
description: Materialismo Storico, N. 1 (2018): Rivoluzioni e restaurazioni, guerre e grandi crisi storiche: cento anni dall'Ottobre russo (Parte seconda)
Improved determination of the sample composition of dimuon events produced in {\boldmath $p\bar{p}$} collisions at {\boldmath $\sqrt{s}=1.96$} TeV
Creators: name: CDF Collaboration
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We use a new method to estimate with 5% accuracy the contribution of pion and kaon in-flight-decays to the dimuon data set acquired with the CDF detector. Based on this improved estimate, we show that the total number and the properties of the collected dimuon events are not yet accounted for by ordinary sources of dimuons which also include the contributions, as measured in the data, of heavy flavor, $Υ$, and Drell-Yan production in addition to muons mimicked by hadronic punchthrough.
description: 31 pages, 8 figures, 10 tables
Assessment Techniques Corresponding to Scientific Texts in Commercial Reading Programs: Do They Promote Scientific Literacy?
Creators: name: Phillips, Linda M.
name: Norris, Stephen P.
name: Smith, Martha L.
name: Buker, Jodi
name: Kasper, Chandra
Publisher: name: Alberta Journal of Educational Research
Year: 2010

description: This research is part of a larger study of commercial reading programs used in Canada in grades 1-6. The specific purposes of the results reported here were to identify and quantify the assessment techniques suggested for the selections that contain scientific content, to show how the assessments differ by grade, to evaluate the nature and quality of the assessments, and to examine the extent to which the assessments help foster scientific literacy. It was found that the assessments occurred in six major forms and employed about a dozen assessment tools that engage students in nearly 20 tasks. Such variety is endorsed in both literacy and science education position statements. The assessments showed some weak trends by grade, but primarily left the purpose of the assessments to teachers’ judgment. The consequence is that teachers probably will choose the assessments for formative rather than summative evaluation, an approach also endorsed by literacy and science education policy statements. Hardly any of the assessments focused on the specificities of learning to read texts that are scientific such as interpreting descriptions of methods and research findings and thus had limited use in promoting this particular aspect of scientific literacy.
description: Alberta Journal of Educational Research, Vol. 55 No. 4 (2009): Winter 2009
Recommendations on Statistical Randomness Test Batteries for Cryptographic Purposes
Creators: name: Luengo, Elena Almaraz
name: Villalba, Luis Javier García
Publisher: name: arXiv
Year: 2024
Subjects: subject: Cryptography and Security (cs.CR)
subject: Computation (stat.CO)
subject: FOS: Computer and information sciences

description: Security in different applications is closely related to the goodness of the sequences generated for such purposes. Not only in Cryptography but also in other areas, it is necessary to obtain long sequences of random numbers or that, at least, behave as such. To decide whether the generator used produces sequences that are random, unpredictable and independent, statistical checks are needed. Different batteries of hypothesis tests have been proposed for this purpose.
 In this work, a survey of the main test batteries is presented, indicating their pros and cons, giving some guidelines for their use and presenting some practical examples.
IR subtraction schemes: integrating the counterterms at NNLO in QCD
Creators: name: Bolzoni, Paolo
name: Somogyi, Gabor
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We briefly review a subtraction scheme for computing radiative corrections to QCD jet cross sections that can be defined at any order in perturbation theory. Hereafter we discuss the computational methods used to evaluate analytically and numerically the integrated counterterms arising from such a subtraction scheme. Basically these methods the Mellin-Barnes (MB) representations technique together with the harmonic summation and the sector decomposition.
description: Talk given at 13th International Workshop on Advanced Computing and Analysis Techniques in Physics Research, ACAT2010, February 22-27, 2010, Jaipur, India
Materialismo e rivoluzione: limiti di un paradigma
Creators: name: Finelli, Roberto
Publisher: name: Materialismo Storico
Year: 2018

description: Soviet Diamat and historical materialism are based on an anthropology of scarcity, according to which the real nature of human beings is primarily a physical-corporeal one, fundamentally generic and aimed at taking possession of the natural world through human work, in order to satisfy our primary needs. Communism is consequently understood in theory and practice as a social organization in which the criterion of equality constitutes the primary and supreme value, while the criterion of difference and inequality constitutes the negative value par excellence. This led to a radical contraposition between a new humanity, characterized by the practice of the "common", and the old bourgeois-liberal humanity, characterized by the exaltation of the "private" and individual subjectivity. Writing The German Ideology and the Parisian Manuscripts of 1844, Marx and Engels removed the dialectical anthropology of Hegel but fell into a new anthropological deficit whose consequences still reach us today. On the other hand, thanks to this removal, the mature Marx will give us a non-anthropomorphic and non-abstract conception of capital, as a merely quantitative factor of systemic integration in a society in which people are worth masks, personifications of economic categories and incarnation of certain relationships and class interests.

Keywords: Historical materialism; Spiritualistic materialism; Communitarianism; Individuation; Manufacturing; Dialectics; Critique of political economy.
description: Materialismo Storico, N. 1 (2018): Rivoluzioni e restaurazioni, guerre e grandi crisi storiche: cento anni dall'Ottobre russo (Parte seconda)
Numerical geometric acoustics: an eikonal-based approach for modeling sound propagation in 3D environments
Creators: name: Potter, Samuel F.
name: Cameron, Maria K.
name: Duraiswami, Ramani
Publisher: name: arXiv
Year: 2022
Subjects: subject: Numerical Analysis (math.NA)
subject: Graphics (cs.GR)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: We present algorithms for solving high-frequency acoustic scattering problems in complex domains. The eikonal and transport partial differential equations from the WKB/geometric optic approximation of the Helmholtz equation are solved recursively to generate boundary conditions for a tree of eikonal/transport equation pairs, describing the phase and amplitude of a geometric optic wave propagating in a complicated domain, including reflection and diffraction. Edge diffraction is modeled using the uniform theory of diffraction. For simplicity, we limit our attention to domains with piecewise linear boundaries and a constant speed of sound. The domain is discretized into a conforming tetrahedron mesh. For the eikonal equation, we extend the jet marching method to tetrahedron meshes. Hermite interpolation enables second order accuracy for the eikonal and its gradient and first order accuracy for its Hessian, computed using cell averaging. To march the eikonal on an unstructured mesh, we introduce a new method of rejecting unphysical updates by considering Lagrange multipliers and local visibility. To handle accuracy degradation near caustics, we introduce several fast Lagrangian initialization algorithms. We store the dynamic programming plan uncovered by the marcher in order to propagate auxiliary quantities along characteristics. We introduce an approximate origin function which is computed using the dynamic programming plan, and whose 1/2-level set approximates the geometric optic shadow and reflection boundaries. We also use it to propagate geometric spreading factors and unit tangent vector fields needed to compute the amplitude and evaluate the high-frequency edge diffraction coefficient. We conduct numerical tests on a semi-infinite planar wedge to evaluate the accuracy of our method. We also show an example with a more realistic building model with challenging architectural features.
description: 47 pages, 17 figures
Magnetotransport studies of EuFe$_2$As$_2$: the influence of the Eu$^{2+}$ magnetic moments
Creators: name: Terashima, Taichi
name: Kurita, Nobuyuki
name: Kikkawa, Akiko
name: Suzuki, Hiroyuki S.
name: Matsumoto, Takehiko
name: Murata, Keizo
name: Uji, Shinya
Publisher: name: arXiv
Year: 2010
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report resistivity $ρ$ and Hall effect measurements on EuFe$_2$As$_2$ at ambient pressure and 28 kbar and magnetization measurements at ambient pressure. We analyze the temperature and magnetic-field dependence of $ρ$ and the Hall effect using a molecular-field theory for magnetoresistance and an empirical formula for the anomalous Hall effect and find that electron scattering due to the Eu$^{2+}$ local moments plays only a minor role in determining electronic transport properties of EuFe$_2$As$_2$.
description: Published in J. Phys. Soc. Jpn
An integrable road to a perturbative plateau
Creators: name: Blommaert, Andreas
name: Kruthoff, Jorrit
name: Yao, Shunyu
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mathematical Physics (math-ph)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: As has been known since the 90s, there is an integrable structure underlying two-dimensional gravity theories. Recently, two-dimensional gravity theories have regained an enormous amount of attention, but now in relation with quantum chaos - superficially nothing like integrability. In this paper, we return to the roots and exploit the integrable structure underlying dilaton gravity theories to study a late time, large $e^{S_\text{BH}}$ double scaled limit of the spectral form factor. In this limit, a novel cancellation due to the integrable structure ensures that at each genus $g$ the spectral form factor grows like $T^{2g+1}$, and that the sum over genera converges, realising a perturbative approach to the late-time plateau. Along the way, we clarify various aspects of this integrable structure. In particular, we explain the central role played by ribbon graphs, we discuss intersection theory, and we explain what the relations with dilaton gravity and matrix models are from a more modern holographic perspective.
description: 44 pages + appendices
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title: Development of a course of virtual laboratory works on the subject "Circuitry of operating devices" in the OrCAD v17 environment
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Year: 2021
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description: Ð¢ÐµÐ¼Ð° Ð²ÑÐ¿ÑÑÐºÐ½Ð¾Ð¹ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÑ: Â«Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° ÐºÑÑÑÐ° Ð²Ð¸ÑÑÑÐ°Ð»ÑÐ½ÑÑ Ð»Ð°Ð±Ð¾ÑÐ°ÑÐ¾ÑÐ½ÑÑ ÑÐ°Ð±Ð¾Ñ Ð¿Ð¾ Ð¿ÑÐµÐ´Ð¼ÐµÑÑ Â«Ð¡ÑÐµÐ¼Ð¾ÑÐµÑÐ½Ð¸ÐºÐ° Ð¾Ð¿ÐµÑÐ°ÑÐ¸Ð¾Ð½Ð½ÑÑ ÑÑÑÑÐ¾Ð¹ÑÑÐ²Â» Ð² ÑÑÐµÐ´Ðµ OrCAD v17Â». ÐÐ¾Ð·Ð¼Ð¾Ð¶Ð½Ð¾ÑÑÑ Ð²Ð¸ÑÑÑÐ°Ð»ÑÐ½Ð¾Ð³Ð¾ Ð²ÑÐ¿Ð¾Ð»Ð½ÐµÐ½Ð¸Ñ Ð»Ð°Ð±Ð¾ÑÐ°ÑÐ¾ÑÐ½ÑÑ ÑÐ°Ð±Ð¾Ñ ÑÐ°ÑÑÐ¸ÑÑÐµÑ Ð²Ð¾Ð·Ð¼Ð¾Ð¶Ð½Ð¾ÑÑÐ¸ ÑÑÐ°Ð´Ð¸ÑÐ¸Ð¾Ð½Ð½Ð¾Ð³Ð¾ Ð¾Ð±ÑÑÐµÐ½Ð¸Ñ ÑÑÑÐ´ÐµÐ½ÑÐ¾Ð² Ð¿Ð¾ Ð´Ð¸ÑÑÐ¸Ð¿Ð»Ð¸Ð½Ðµ Â«Ð­Ð»ÐµÐºÑÑÐ¾Ð½Ð¸ÐºÐ° Ð¸ ÑÐ»ÐµÐºÑÑÐ¾ÑÐµÑÐ½Ð¸ÐºÐ°Â», Ð¿Ð¾Ð²ÑÑÐ°Ñ ÐµÐ³Ð¾ ÐºÐ°ÑÐµÑÑÐ²Ð¾. Ð ÑÐ°Ð±Ð¾ÑÐµ Ð¿ÑÐµÐ´ÑÑÐ°Ð²Ð»ÐµÐ½ ÑÑÐ°Ð´Ð¸ÑÐ¸Ð¾Ð½Ð½ÑÐ¹ ÐºÑÑÑ Ð¸Ð· 10 ÑÐ°Ð±Ð¾Ñ, ÐºÐ¾ÑÐ¾ÑÑÐ¹ Ð²ÐºÐ»ÑÑÐ°ÐµÑ Ð² ÑÐµÐ±Ñ Ð¾Ð¿Ð¸ÑÐ°Ð½Ð¸Ðµ Ð¸ÑÑÐ»ÐµÐ´ÑÐµÐ¼ÑÑ ÑÑÐµÐ¼, Ð¸Ñ ÑÐ°ÑÑÐµÑ Ð¸ Ð¿Ð¾Ð´ÑÐ¾Ð±Ð½ÑÐµ Ð¼ÐµÑÐ¾Ð´Ð¸ÑÐµÑÐºÐ¸Ðµ ÑÐºÐ°Ð·Ð°Ð½Ð¸Ñ Ð¿Ð¾ Ð¸Ñ Ð²ÑÐ¿Ð¾Ð»Ð½ÐµÐ½Ð¸Ñ Ð¿ÑÑÐµÐ¼ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð² Ð¡ÐÐÐ  OrCAD, Ð¼Ð¾ÑÐ½Ð¾Ð¼ ÑÐ¾Ð²ÑÐµÐ¼ÐµÐ½Ð½Ð¾Ð¼ Ð¸Ð½ÑÑÑÑÐ¼ÐµÐ½ÑÐµ ÑÐºÐ²Ð¾Ð·Ð½Ð¾Ð³Ð¾ Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð°Ð½Ð°Ð»Ð¾Ð³Ð¾Ð²ÑÑ Ð¸ ÑÐ¸ÑÑÐ¾Ð²ÑÑ ÑÐ»ÐµÐºÑÑÐ¾Ð½Ð½ÑÑ ÑÑÐµÐ¼ Ð¸ Ð¿ÐµÑÐ°ÑÐ½ÑÑ Ð¿Ð»Ð°Ñ.
description: The subject of the graduate qualification work is Â«Development of course of virtual laboratory works on the subject Â«Circuitry of operating devicesÂ» in the OrCAD v17 environmentÂ». The opportunity of doing virtually laboratory works expands possibility of traditional education of students in the discipline Â«Electronics and Electrical EngineeringÂ». The thesis presents a traditional course of 10 works, which includes a description of the studied circuits, their calculation and detailed methodological instructions for their implementation by modeling in CAD OrCAD, a powerful modern tool for end-to-end design of analog and digital electronic circuits and printed circuit boards.
Functional Renormalization Group Approach to Circuit Quantum Electrodynamics
Creators: name: Yokota, Takeru
name: Masuki, Kanta
name: Ashida, Yuto
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Superconductivity (cond-mat.supr-con)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A nonperturbative approach is developed to analyze superconducting circuits coupled to quantized electromagnetic continuum within the framework of the functional renormalization group. The formalism allows us to determine complete physical pictures of equilibrium properties in the circuit quantum electrodynamics (cQED) architectures with high-impedance waveguides, which have recently become accessible in experiments. We point out that nonperturbative effects can trigger breakdown of the supposedly effective descriptions, such as the spin-boson and boundary sine-Gordon models, and lead to qualitatively new phase diagrams. The origin of the failure of conventional understandings is traced to strong renormalizations of circuit parameters at low-energy scales. Our results indicate that a nonperturbative analysis is essential for a comprehensive understanding of cQED platforms consisting of superconducting circuits and long high-impedance transmission lines.
description: 16 pages, 8 figures
Metrics in institutional repositories: the case of Digital.CSIC
Creators: name: Castro, Pablo De
name: Oficina Técnica De Digital.CSIC
Publisher: name: Consejo Superior de Investigaciones Científicas (España)
Year: 2009
Subjects: subject: Institutional repositories
subject: DIGITAL.CSIC
subject: Metrics
subject: Usage
subject: Statistics
subject: FOS: Mathematics
subject: Research assessment

description: 23 slides.-- Contributed to: “Metrics, Repositories and Social Sciences and Humanities” (Centro de Ciencias Humanas y Sociales, CCHS-CSIC, Nov 20, 2009)
Enhanced Coherence of a Quantum Doublet Coupled to Tomonaga-Luttinger Liquid Leads
Creators: name: Cirillo, Antonio
name: Mancini, Matteo
name: Giuliano, Domenico
name: Sodano, Pasquale
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We use boundary field theory to describe the phases accessible to a tetrahedral qubit coupled to Josephson junction chains acting as Tomonaga-Luttinger liquid leads. We prove that, in a pertinent range of the fabrication and control parameters, an attractive finite coupling fixed point emerges due to the geometry of the composite Josephson junction network. We show that this new stable phase is characterized by the emergence of a quantum doublet which is robust not only against the noise in the external control parameters (magnetic flux, gate voltage) but also against the decoherence induced by the coupling of the tetrahedral qubit with the superconducting leads. We provide protocols allowing to read and to manipulate the state of the emerging quantum doublet and argue that a tetrahedral Josephson junction network operating near the new finite coupling fixed point may be fabricated with today's technologies.
description: 36 pages, 4 figures
Posicionando Digital.CSIC como un elemento clave en el Sistema de Gestión de Información Científica del CSIC
Creators: name: Bernal, Isabel
name: Oficina Técnica De Digital.CSIC
Publisher: name: Digital.CSIC
Year: 2011
Subjects: DIGITAL.CSIC
Acceso abierto
Gestión de información científica institucional
Armonización de políticas de información científica
Current Research Information System (CRIS)
Open Access
Management of institutional scientific outputs
Harmonization of scientific information policies

description: La ponencia Posicionando Digital.CSIC como un elemento clave en el Sistema de Gestión de la Información Científica del CSIC fue presentada en la conferencia "Bibliotecas y Repositorios Digitales: Gestión del Conocimiento, Acceso Abierto y Visibilidad Latinoamericana (BIREDIAL)" celebrada en 9-11 mayo de 2011 en Bogotá, Colombia.
El acceso abierto en la agenda de la Red de Bibliotecas del CSIC
Creators: name: Bernal, Isabel
name: Oficina Técnica De Digital.CSIC
name: Unidad De Recursos De Información Científica Para La Investigación (URICI)
Publisher: name: Digital.CSIC
Year: 2011
Subjects: Acceso abierto
Red de bibliotecas CSIC
Consorcios de bibliotecas
DIGITAL.CSIC

description: Comunicación en el marco del IV Seminario de Consorcios de Bibliotecas Ítalo-Ibero-Latino Americanas (SCBIILA), dedicado a “Consorcios sostenibles” y celebrado en Buenos Aires, 13-14 septiembre 2011.
Introducción a Digital.CSIC
Creators: name: Bernal, Isabel
Publisher: name: Digital.CSIC
Year: 2011
Subjects: DIGITAL.CSIC
Líneas de trabajo
Colaboración europea
Políticas de acceso abierto
Repository's work lines
Collaboration in Europe
Open Access policies

description: Presentación durante la Jornada de Organismos Públicos de Investigación y el acceso abierto organizada por la Unidad de Recursos de Informacuión Científica para la Investigación (URICI) y Digital.CSIC el 24 de octubre con ocasión de la Semana Internacional del Acceso Abierto 2011. La jornada reunió personal técnico y bibliotecario de los Organismos Públicos de Investigación de España, representantes del Ministerio de Ciencia e Innovación y de la FECYT.
description: Conclusiones de la jornada disponibles en: Unidad de Recursos de Información Científica para la Investigación (URICI). Conclusiones de la Jornada de OPIS y el acceso abierto. http://hdl.handle.net/10261/42321
description: Resto de presentaciones: Gómez, Monique. El IAC y el Acceso Abierto. http://hdl.handle.net/10261/170322 .-- González Copeiro, Cristina. El acceso abierto y los repositorios científicos en España: Proyectos RECOLECTA, OPenAIRE y MedOANet. http://hdl.handle.net/10261/170324 .-- Primo Peña, Elena. El Instituto de Salud Carlos III y el Acceso Abierto. Iniciativas y resultados. http://hdl.handle.net/10261/170317
Spaces of states of the two-dimensional O(n) and Potts models
Creators: name: Jacobsen, Jesper Lykke
name: Ribault, Sylvain
name: Saleur, Hubert
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Representation Theory (math.RT)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We determine the spaces of states of the two-dimensional $O(n)$ and $Q$-state Potts models with generic parameters $n,Q\in \mathbb{C}$ as representations of their known symmetry algebras. While the relevant representations of the conformal algebra were recently worked out, it remained to determine the action of the global symmetry groups: the orthogonal group for the $O(n)$ model, and the symmetric group $S_Q$ for the $Q$-state Potts model. We do this by two independent methods. First we compute the twisted torus partition functions of the models at criticality. The twist in question is the insertion of a group element along one cycle of the torus: this breaks modular invariance, but allows the partition function to have a unique decomposition into characters of irreducible representations of the global symmetry group. Our second method reduces the problem to determining branching rules of certain diagram algebras. For the $O(n)$ model, we decompose representations of the Brauer algebra into representations of its unoriented Jones--Temperley--Lieb subalgebra. For the $Q$-state Potts model, we decompose representations of the partition algebra into representations of the appropriate subalgebra. We find explicit expressions for these decompositions as sums over certain sets of diagrams, and over standard Young tableaux. We check that both methods agree in many cases. Moreover, our spaces of states are consistent with recent bootstrap results on four-point functions of the corresponding CFTs.
description: 60 pages, v2: minor clarifications
Preparing North American Preservice Teachers for Global Perspectives: An International Teaching Practicum Experience in Africa
Creators: name: Monari Mwebi, Bosire
name: Brigham, Susan M.
Publisher: name: Alberta Journal of Educational Research
Year: 2010

description: Given the economic, political, and social conditions in the world today and the increased diversity in Canadian classrooms, schools require teachers who have a strong sense of self-awareness and understanding of global issues. This article is based on empirical research involving preservice teachers from an Atlantic Canadian university. The preservice teachers did six weeks of teaching practicum in Africa. We draw on the theories of Africentricity and transformative learning to inform our analysis. Our findings suggest that preservice teachers who did their practicum in Africa increased their self-awareness, and enhanced their personal efficacy and understanding of cross-cultural, diversity, and globalization issues, which has informed their subsequent teaching practice in public school systems. We conclude with recommendations for teacher education programs.
description: Alberta Journal of Educational Research, Vol. 55 No. 3 (2009): Fall (Theme Issue)
Approximate analytic expressions for circular orbits around rapidly rotating compact stars
Creators: name: Bejger, M.
name: Zdunik, J. L.
name: Haensel, P.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We calculate stationary configurations of rapidly rotating compact stars in general relativity, to study the properties of circular orbits of test particles in the equatorial plane. We search for simple, but precise, analytical formulae for the orbital frequency, specific angular momentum and binding energy of a test particle, valid for any equation of state and for any rotation frequency of the rigidly rotating compact star, up to the mass-shedding limit. Numerical calculations are performed using precise 2-D codes based on multi-domain spectral methods. Models of rigidly rotating neutron stars and the space-time outside them are calculated for several equations of state of dense matter. Calculations are also performed for quark stars consisting of self-bound quark matter. At the mass-shedding limit, the rotational frequency converges to a Schwarzschildian orbital frequency at the equator. We show that orbital frequency for any orbit outside equator is also approximated by a Schwarzschildian formula. Using a simple approximation for the frame-dragging term, we obtain approximate expressions for the specific angular momentum and specific energy on the corotating circular orbits in the equatorial plane of neutron star, which are valid down to the stellar equator. The formulae recover reference numerical values with typically 1% of accuracy for neutron stars with M > 0.5 M_sun. They are less precise for quark stars consisting of self-bound quark matter.
description: 6 pages, 6 figures, A&A in press
La scomparsa del marxismo nella didattica e nella ricerca scientifica in economia politica in Italia
Creators: name: Forges Davanzati, Guglielmo
Publisher: name: Materialismo Storico
Year: 2016

description: This paper aims at discussing the causes and the effects of the disappearance of Marxism in teaching and reasearch in Italian Universities, with particular reference to political economy. It will be argued that this phenomenon is linked to the restructuring of the Italian capitalism and, particularly, to a political demand – on the part of firms – of applied research and the espulsion of the political and critical dimension from the economic thinking.

Keywords: Marxism, Italian University, Italian capitalism.
description: Materialismo Storico, N. 1-2 (2016): Questioni e metodo del materialismo storico
Rethinking Assessment in an Indigenous Specific Program
Creators: name: Fleet, Alma
name: Kitson, Rosalind
Publisher: name: Alberta Journal of Educational Research
Year: 2010

description: Nonstandard entry programs into higher education include worthy goals and problematic processes. Although effective practices in teacher education would seem to be well established, complications arise when good intentions intersect with university protocols, issues of power, history, rights, and cultural complexities. This article reports on an Australian study on assessment approaches in an early childhood Indigenous teacher education program. Focus group investigations with current students and teaching staff and interviews with graduates reveal some similarities in perception, but a range of challenges to be addressed. Diversity of perspective characterizes both the student groups’ and lecturers’ responses.
description: Alberta Journal of Educational Research, Vol. 55 No. 3 (2009): Fall (Theme Issue)
n-ary algebras: a review with applications
Creators: name: de Azcarraga, Jose A.
name: Izquierdo, Jose M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Group Theory (math.GR)
subject: Operator Algebras (math.OA)
subject: Quantum Algebra (math.QA)
subject: Rings and Algebras (math.RA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: This paper reviews the properties and applications of certain n-ary generalizations of Lie algebras in a self-contained and unified way. These generalizations are algebraic structures in which the two entries Lie bracket has been replaced by a bracket with n entries. Each type of n-ary bracket satisfies a specific characteristic identity which plays the rôle of the Jacobi identity for Lie algebras. Particular attention will be paid to generalized Lie algebras, which are defined by even multibrackets obtained by antisymmetrizing the associative products of its n components and that satisfy the generalized Jacobi identity (GJI), and to Filippov (or n-Lie) algebras, which are defined by fully antisymmetric n-brackets that satisfy the Filippov identity (FI). Three-Lie algebras have surfaced recently in multi-brane theory in the context of the Bagger-Lambert-Gustavsson model. Because of this, Filippov algebras will be discussed at length, including the cohomology complexes that govern their central extensions and their deformations (Whitehead's lemma extends to all semisimple n-Lie algebras). When the skewsymmetry of the n-Lie algebra is relaxed, one is led the n-Leibniz algebras. These will be discussed as well, since they underlie the cohomological properties of n-Lie algebras. The standard Poisson structure may also be extended to the n-ary case. We shall review here the even generalized Poisson structures, whose GJI reproduces the pattern of the generalized Lie algebras, and the Nambu-Poisson structures, which satisfy the FI and determine Filippov algebras. Finally, the recent work of Bagger-Lambert and Gustavsson on superconformal Chern-Simons theory will be briefly discussed. Emphasis will be made on the appearance of the 3-Lie algebra structure and on why the A_4 model may be formulated in terms of an ordinary Lie algebra, and on its Nambu bracket generalization.
description: Invited topical review for JPA Math.Theor. v2: minor changes, references added. 120 pages, 318 references