cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Model-independent reconstruction of the primordial curvature power spectrum from PTA data
Creators: name: Yi, Zhu
name: You, Zhi-Qiang
name: Wu, You
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Recently released data from pulsar timing array (PTA) collaborations provide strong evidence for a stochastic signal consistent with a gravitational-wave background, potentially originating from scalar-induced gravitational waves (SIGWs). However, in order to determine whether the SIGWs with a specific power spectrum of curvature perturbations can account for the PTA signal, one needs to estimate the energy density of the SIGWs, which can be computationally expensive. In this paper, we use a model-independent approach to reconstruct the primordial curvature power spectrum using a free spectrum cross over from $10^{1}\,\mathrm{Mpc}^{-1}$ to $10^{20}\,\mathrm{Mpc}^{-1}$ with NANOGrav 15-yrs data set. Our results can simplify the task of assessing whether a given primordial curvature power spectrum can adequately explain the observed PTA signal without calculating the energy density of SIGWs.
description: 17 pages, 1 figure
Trade-off between Information Gain and Disturbance in Local Discrimination of Entangled Quantum States
Creators: name: Lim, Youngrong
name: Hhan, Minki
name: Kwon, Hyukjoon
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We establish an information gain-disturbance trade-off relation in local state discrimination. Our result demonstrates a fundamental limitation of local strategy to discriminate entangled quantum states without disturbance, which becomes more difficult as the entanglement of the states to be discriminated increases. For a set of maximally entangled states, the capability of local strategy is tightly suppressed, as random guessing without measurements saturates the bound provided by the trade-off relation. We also show that the trade-off can be circumvented when local operations are aided by pre-shared entanglement. To simultaneously achieve correct guessing of state and non-disturbance, an entirely different strategy from conventional state discrimination should be adopted to lower the cost of pre-shared entanglement. We explicitly propose an adaptive and non-destructive strategy based on the stabilizer formalism, which shows a strict advantage over conventional teleportation-based approaches in pre-shared entanglement cost for discriminating a set of maximally entangled states. As an application of the trade-off relation, we propose an entanglement certification protocol that is robust against depolarizing noise and generalize it to multipartite scenarios in a quantum network.
description: 5+14 pages, 3 figures
Sexualpädagogische Inhalte auf Instagram: Eine system- und präventionstheoretische Bestandesaufnahme und Handlungsempfehlungen für die Präventionsarbeit mit Jugendlichen
Creators: name: Roth, Bettina
Publisher: name: Zenodo
Year: 2020

description: Was früher das Dr. Sommer-Team war, ist heute das Internet: Jugendliche suchen Antworten und Inhalte rund um Liebe, Körper und Sexualität. Instagram ist ein rege genutztes, soziales Netzwerk. Deshalb ist das Ziel der vorliegenden Arbeit, eine Bestandsaufnahme zu machen über die sexualpädagogischen Inhalte, welche auf Instagram zu finden sind. Als theoretischen Bezugsrahmen dienen die präventionstheoretischen Grundlagen nach Martin Hafen (2013). Nebst dem dabei zugrunde liegenden Verständnis von Gesundheit werden insbesondere die Interventionsbedingungen von Präventionsmassnahmen beleuchtet. Abgerundet wird der theoretische Teil mit Ausführungen zur umfassenden Sexualpädagogik. Durch ein systematisches Vorgehen konnten 22 aktive Instagramkanäle identifiziert werden, welche Jugendliche mit sexualpädagogischen Inhalten adressieren und verschiedenen Anbietergruppen (Massenmedien, Beratungspersonen und Coaches, Gesundheits- und Erotikanbieter, Fachkräfte und Fachinstitutionen sowie Aktivismus) zugeordnet werden. Anschliessend wurden alle Textbeiträge der Monate Mai-Juli 2020 in diesem Themenbereich einer qualitativen Inhaltsanalyse unterzogen. Diese zeigte, dass viele Kanäle ein breites Spektrum der Themen einer umfassenden Sexualpädagogik abdecken. Besonders viele der 288 Beiträge können der Kategorie sexuelle und reproduktive Gesundheit zugeordnet werden, wobei hingegen sehr wenig Inhalte in der Kategorie Gewalt veröffentlicht wurden. Gemäss der systemischen Präventionstheorie führt die Berücksichtigung der methodischen Faktoren der Interaktivität und des Einsatzes personaler Medien zu höheren Gelingenswahrscheinlichkeiten von Interventionen. Basierend auf die Annahmen sind vor allem die Kanäle aufklo, achtung.liebe, jugendgegenaids, maedelsabende und youngbulanz hervorzuheben. Die Erkenntnisse der vorliegenden Arbeit können von Fachpersonen genutzt werden, um Jugendlichen Empfehlungen abgeben zu können sowie eigene Instagram-Aktivitäten entsprechend den methodischen Empfehlungen zu gestalten.
description: + Code Diss LU: hslusa mas pg + Fussnote: Master-Arbeit MAS Prävention und Gesundheitsförderung, Hochschule Luzern – Soziale Arbeit, 2020 + NL-Code: NLLUHSA202012
EXPOSIÇÃO EM CAMPO EXPANDIDO: a ressignificação do espaço em curadorias de Lucy Lippard
Creators: name: Alves, Maria Gabriela de Carvalho Ribeiro
Publisher: name: Zenodo
Year: 2018
Subjects: Curadoria de arte
Lucy R. Lippard
Feminismo
Arte conceitual
Livro de artista

description: Nesta pesquisa, examina-se e discute-se a atuação de Lucy R. Lippard em projetos, exposições e coletivos que apontam para uma ressignificação do espaço expositivo e suas consequências sobre a prática curatorial. Para isso, são exploradas principalmente as exposições de caráter conceitual e político que tensionaram os limites do sistema das artes vigente: Suitcases, Number Shows, 26 Contemporary Women, Six Years (...), Heresies Collective, PAD/D e a Printed Matter. Tomando como referência as ideias de “campo ampliado”, de Rosalind Krauss, e de “desmaterialização”, de Lucy Lippard, nesta pesquisa, investiga-se a curadoria de exposições e projetos que se desenvolvem em espaços alternativos às tradições modernas da galeria de arte. Seja nos espaços autônomos, na desmaterialização das exposições, na portabilidade das publicações impressas, na relação entre a arte e o espaço, ou nos espaços de representatividade, é possível constatar que as curadorias de Lucy R. Lippard contribuíram para a expansão da prática curatorial tal como concebemos na atualidade. Assim como outros curadores referenciais para história das exposições, Lippard abriu caminhos para compreendermos hoje a curadoria expandida, para além da organização de exposições em espaços formais, criando novos lugares para as exposições de artes visuais.

This research examines and discusses the work of Lucy R. Lippard in projects, exhibitions and collectives that points to a re-signification of the exhibition space and its consequences on curatorial practice. For this, the exhibitions of conceptual and political character that have tensioned the limits of the current art system are explored: Suitcases, Number Shows, 26 Contemporary Women, Six Years (...), Heresies Collective, PAD/D and the Printed Matter. Taking as a reference the ideas of extended field of Rosalind Krauss and the dematerialization of Lucy Lippard, the research investigates the curatorial aspects of expositions and projects that were developed in alternative spaces to the modern tradition of the art gallery. Whether through autonomous spaces, the dematerialization of exhibitions, the portability of printed publications, the relationship between art and space, or in the spaces of representation, it is possible to see that Lucy R. Lippard's curatorial process contributed to the expansion of the curatorial practice as we conceive today. Like other reference curators for the history of the exhibitions, Lippard opened the way for today's expanded curatorship, as well as the organization of exhibitions in formal spaces, creating new venues for visual arts exhibitions.
Exploring the physical properties of local star-forming ULIRGs from the ultraviolet to the infrared
Creators: name: da Cunha, Elisabete
name: Charmandaris, Vassilis
name: Diaz-Santos, Tanio
name: Armus, Lee
name: Marshall, Jason A.
name: Elbaz, David
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present an application of the da Cunha, Charlot & Elbaz (2008) model of the spectral energy distribution (SEDs) of galaxies from the ultraviolet to far-infrared to a small pilot sample of purely star-forming Ultra-Luminous Infrared Galaxies (ULIRGs). We interpret the observed SEDs of 16 ULIRGs using this physically-motivated model which accounts for the emission of stellar populations from the ultraviolet to the near-infrared and for the attenuation by dust in two components: an optically-thick starburst component and the diffuse ISM. The infrared emission is computed by assuming that all the energy absorbed by dust in these components is re-radiated at mid- and far-infrared wavelengths. This model allows us to derive statistically physical properties including star formation rates, stellar masses, as well as temperatures and masses of different dust components and plausible star formation histories. We find that, although the ultraviolet to near-infrared emission represents only a small fraction of the total power radiated by ULIRGs, observations in this wavelength range are important to understand the properties of the stellar populations and dust attenuation in the diffuse ISM of these galaxies. Furthermore, our analysis indicates that the use of mid-infrared spectroscopy from the Infrared Spectrograph on the Spitzer Space Telescope is crucial to obtain realistic estimates of the extinction to the central energy source, mainly via the depth of the 9.7-micron silicate feature, and thus accurately constrain the total energy balance. Our findings are consistent with the notion that, in the local Universe, the physical properties of ULIRGs are fundamentally different from those of galaxies with lower infrared luminosities and that local ULIRGs are the result of merger-induced starbursts. [abridged]
description: 20 pages, 8 figures, 7 tables. Accepted for publication in Astronomy & Astrophysics. Full resolution version available at http://users.physics.uoc.gr/~dacunha/paper_dacunha_ulirgs.pdf
On the heavy-tailedness of Student's $t$-statistic
Creators: name: Jonsson, Fredrik
Publisher: name: arXiv
Year: 2011
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: Let $\{X_i\}_{i\geq1}$ be an i.i.d. sequence of random variables and define, for $n\geq2$, \[T_n=\cases{n^{-1/2}\hatσ_n^{-1}S_n,\quad \hatσ_n>0,\cr 0,\quad \hatσ_n=0,}with S_n=\sum_{i=1}^nX_i, \hatσ^2_n=\frac{1}{n-1}\sum_{i=1}^n(X_i-n^{-1}S_n)^2.\] We investigate the connection between the distribution of an observation $X_i$ and finiteness of $\mathrm{E}|T_n|^r$ for $(n,r)\in \mathbb{N}_{\geq2}\times\mathbb{R}^+$. Moreover, assuming $T_n\stackrel{d}{\longrightarrow}T$, we prove that for any $r>0$, $\lim_{n\to\infty}\mathrm{E}|T_n|^r=\mathrm{E}|T|^r
description: Published in at http://dx.doi.org/10.3150/10-BEJ262 the Bernoulli (http://isi.cbs.nl/bernoulli/) by the International Statistical Institute/Bernoulli Society (http://isi.cbs.nl/BS/bshome.htm)
Semantic Image Synthesis via Class-Adaptive Cross-Attention
Creators: name: Fontanini, Tomaso
name: Ferrari, Claudio
name: Lisanti, Giuseppe
name: Bertozzi, Massimo
name: Prati, Andrea
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: In semantic image synthesis the state of the art is dominated by methods that use customized variants of the SPatially-Adaptive DE-normalization (SPADE) layers, which allow for good visual generation quality and editing versatility. By design, such layers learn pixel-wise modulation parameters to de-normalize the generator activations based on the semantic class each pixel belongs to. Thus, they tend to overlook global image statistics, ultimately leading to unconvincing local style editing and causing global inconsistencies such as color or illumination distribution shifts. Also, SPADE layers require the semantic segmentation mask for mapping styles in the generator, preventing shape manipulations without manual intervention. In response, we designed a novel architecture where cross-attention layers are used in place of SPADE for learning shape-style correlations and so conditioning the image generation process. Our model inherits the versatility of SPADE, at the same time obtaining state-of-the-art generation quality, as well as improved global and local style transfer. Code and models available at https://github.com/TFonta/CA2SIS.
description: Code and models available at https://github.com/TFonta/CA2SIS The paper is under consideration at Computer Vision and Image Understanding
A low surface brightness halo surrounding the globular cluster NGC 5694
Creators: name: Correnti, M.
name: Bellazzini, M.
name: Dalessandro, E.
name: Mucciarelli, A.
name: Monaco, L.
name: Catelan, M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report on the discovery of an extended stellar halo surrounding the distant Galactic globular cluster NGC 5694, based on new deep (V ~ 24.5) wide-field (24' * 20') photometry acquired with VIMOS at VLT. Stars with colour and magnitude consistent with the Main Sequence of the cluster are clearly identified out to r ~ 9'(~ 93 pc) from the cluster center, much beyond the tidal radius of the King model that best fits the inner profile (r_t=3.15'). We do not find a clear end of the structure within our field. The overall observed profile cannot be properly fitted with either a King (1966) model, an Elson et al. (1987) model, or a Wilson (1975) model; however it is very smooth and does not show any sign of the break near the tidal radius that is typically observed in stellar systems with tidal tails. The density map we derived does not show evidence of tidal tails, within the considered field. The extra-tidal component contains ~ 3.5% of the cluster light (mass) and has a surface density profile falling as ~ r^{-3.2}. The possible origin of the detected structure is discussed, as a clear-cut conclusion cannot be reached with the available data.
description: 7 pages, 4 figures, accepted for publication in MNRAS
Study of multi black hole and ring singularity apparent horizons
Creators: name: Jaramillo, Gabriela
name: Lousto, Carlos O.
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We study critical black hole separations for the formation of a common apparent horizon in systems of $N$ - black holes in a time symmetric configuration. We study in detail the aligned equal mass cases for $N=2,3,4,5$, and relate them to the unequal mass binary black hole case. We then study the apparent horizon of the time symmetric initial geometry of a ring singularity of different radii. The apparent horizon is used as indicative of the location of the event horizon in an effort to predict a critical ring radius that would generate an event horizon of toroidal topology. We found that a good estimate for this ring critical radius is $20/(3π) M$. We briefly discuss the connection of this two cases through a discrete black hole 'necklace' configuration.
description: 31 pages, 21 figures
Latest results for the antikaon-nucleon optical potential
Creators: name: Magas, V. K.
name: Yamagata-Sekihara, J.
name: Hirenzaki, S.
name: Oset, E.
name: Ramos, A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The key question of this letter is whether the K-nucleus optical potential is deep, as it is prefered by the phenomenological fits to kaonic atoms data, or shallow, as it comes out from unitary chiral model calculations. The current experimental situation is reviewed.
description: 3 pages, 1 figure. Presented at the 21st European Conference on the Few-Body problems in Physics (EFB21), Salamanca, Spain, August 29 - September 3, 2010
D7.5 Dissemination, Standardisation and Adoption Roadmap
Creators: name: Willems, Marieke
name: Schillaci, Andrea
name: Simoni, Diego
name: Muscella, Silvana
name: Tomas, Luis
name: Bélen, Ana
Publisher: name: Zenodo
Year: 2020

description: This report is scoped under Work Package 7 “Communication, Exploitation, Standardisation & Roadmapping” of BigDataStack project. The main objectives of WP7 are to: Provide a practical business model to which the project’s stakeholders may effectively use with a roll-out plan to different target entities such as decision makers, big data programmers and practitioners, research community, standardisation bodies, Ensure an effective communication strategy and plan has been put in place, Facilitate and increase the uptake of BigDataStack results through standardisation and the European Open Source Initiative. In order to achieve these objectives, the BigDataStack consortium has carried out several activities, which are reflected in this deliverable.
Security Risks and Modern Cyber Security Technologies for Corporate Networks
Creators: name: Gharibi, Wajeb
name: Mirza, Abdulrahman
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cryptography and Security (cs.CR)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: This article aims to highlight current trends on the market of corporate antivirus solutions. Brief overview of modern security threats that can destroy IT environment is provided as well as a typical structure and features of antivirus suits for corporate users presented on the market. The general requirements for corporate products are determined according to the last report from av-comparatives.org [1]. The detailed analysis of new features is provided based on an overview of products available on the market nowadays. At the end, an enumeration of modern trends in antivirus industry for corporate users completes this article. Finally, the main goal of this article is to stress an attention about new trends suggested by AV vendors in their solutions in order to protect customers against newest security threats.
description: 5 pages
Arquitetura, Design e Futuro: dimensão didática de espaços e objetos escolares
Architecture, design and future - educational dimension of school premises and objects
Creators: name: Paiva, Bartolomeu
Publisher: name: Escola Superior de Educação de Paula Frassinetti - CIPAF
Year: 2018
Subjects: Arquitetura; design; escola; didática; futuro

description: A temática1 do II Seminário Internacional de Educação Artística da Escola Superior de Educação Paula Frassinetti suscita, pela sua pertinência e atualidade, a possibilidade de desvelarmos o papel integrado da arquitetura e do design, não como núcleo disciplinar do currículo, mas antes como existência concreta que, na relação com os seus utilizadores e/ou fruidores, se converta em contributo para uma formação inteira que, despojada da materialidade das coisas, se afirme no universo subjetivo das aprendizagens que marcam o presente e o futuro de cada aprendente.

PALAVRAS-CHAVE

Arquitetura; design; escola; didática; futuro

1 A educação artística na escola do futuro

ARCHITECTURE, DESIGN AND FUTURE

educational dimension of school premises and objects

ABSTRACT

Due to its importance and relevance to the present time, the subject 1 of the II International Seminar of Artistic Education, held by the Higher School of Education of Paula Frassinetti, raises numerous possibilities to unveil the integrated role of architecture and design, not as the core discipline of the curriculum, but rather as a concrete existence in its relation to the mere and/or appreciative users. As so, it is expected that this concrete existence may convert into a contribution to a holistic formation which, stripped of the material nature of things, may assert itself in the subjective learning universe that has a profound impact in the present and future of each student.

KEYWORDS

Architecture, design, school, didactics, future
description: Saber & Educar, n. 24 (2018): A Educação Artística na Escola do Século XXI
Armed groups, child soldiers and the pursuit of legitimacy
Creators: name: Plowright, William
Publisher: name: University of British Columbia
Year: 2018

description: In armed conflicts around the world, armed groups recruit child soldiers into their organisations to fill a wide range of roles. In response, transnational advocacy networks have been mobilised to name-and-shame such armed groups and seek an end to this humanitarian concern through asserting the norm against the use of child soldiers. Some armed groups respond to this advocacy, and demobilise their child soldiers, while others ignore international pressure. There is a puzzle here: why do some armed groups demobilize child soldiers, while others do not? What makes armed groups more or less responsive to advocacy? I argue that some armed groups are engaging with the child soldiers norm in order to gain legitimacy from international audiences. Evidence shows that the armed groups that do this are those who have a large domestic support base but are losing their armed struggle. Armed groups do not engage with the norm if they are winning their struggle, or if they are losing and do not have a large domestic support base. In order to demonstrate this theory, I present evidence from qualitative interview-based research conducted in Syria and Myanmar in 2012 and 2013. I show that in these two dramatically different conflicts, armed groups follow the same forms of behavior. In both cases, it is only when groups are losing but have support, that they will dialogue with transnational advocacy networks in order to engage with the child soldiers norm and acquire international legitimacy.
Fast Flux-Activated Leakage Reduction for Superconducting Quantum Circuits
Creators: name: Lacroix, Nathan
name: Hofele, Luca
name: Remm, Ants
name: Benhayoune-Khadraoui, Othmane
name: McDonald, Alexander
name: Shillito, Ross
name: Lazar, Stefania
name: Hellings, Christoph
name: Swiadek, Francois
name: Colao-Zanuz, Dante
name: Flasby, Alexander
name: Panah, Mohsen Bahrami
name: Kerschbaum, Michael
name: Norris, Graham J.
name: Blais, Alexandre
name: Wallraff, Andreas
name: Krinner, Sebastian
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum computers will require quantum error correction to reach the low error rates necessary for solving problems that surpass the capabilities of conventional computers. One of the dominant errors limiting the performance of quantum error correction codes across multiple technology platforms is leakage out of the computational subspace arising from the multi-level structure of qubit implementations. Here, we present a resource-efficient universal leakage reduction unit for superconducting qubits using parametric flux modulation. This operation removes leakage down to our measurement accuracy of $7\cdot 10^{-4}$ in approximately $50\, \mathrm{ns}$ with a low error of $2.5(1)\cdot 10^{-3}$ on the computational subspace, thereby reaching durations and fidelities comparable to those of single-qubit gates. We demonstrate that using the leakage reduction unit in repeated weight-two stabilizer measurements reduces the total number of detected errors in a scalable fashion to close to what can be achieved using leakage-rejection methods which do not scale. Our approach does neither require additional control electronics nor on-chip components and is applicable to both auxiliary and data qubits. These benefits make our method particularly attractive for mitigating leakage in large-scale quantum error correction circuits, a crucial requirement for the practical implementation of fault-tolerant quantum computation.
COORDINATING LOW-GLUCOSE INSULIN SUSPENSION AND CARBOHYDRATE RECOMMENDATIONS FOR HYPOGLYCAEMIA MINIMISATION
Creators: name: Changyuan Liu, Pantelis Georgiou
name: Oliver Nick, Parizad Avari
Publisher: name: Zenodo
Year: 2019

description: Predictive low-glucose insulin suspension (PLGS) systems have been proven to be an effective way to reduce hypoglycaemia [1]. • Carbohydrate recommenders (CR) have also shown to be a successful method to protect against hypoglycaemia [2]. • The simultaneous utilisations of these two methods might lead to hyperglycaemia due to the overlapping effect of the two interventions. • In this work, we present an effective strategy to coordinate the use of PLGS and CR to reduce the risk of hypoglycaemia without increasing hyperglycaemia.
Causal influence versus signalling for interacting quantum channels
Creators: name: Barsse, Kathleen
name: Perinotti, Paolo
name: Tosini, Alessandro
name: Vaglini, Leonardo
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A causal relation between quantum agents, say Alice and Bob, is necessarily mediated by an interaction. Modelling the last one as a reversible quantum channel, an intervention of Alice can have causal influence on Bob's system, modifying correlations between Alice and Bob's systems. Causal influence between quantum systems necessarily allows for signalling. Here we prove a mismatch between causal influence and signalling via direct computation of the two quantities for the Cnot gate. Finally we show a continuity theorem for causal effects of unitary channels: a channel has small causal influence iff it allows for small signalling.
description: 5 pages, revtex4-2
The polar Catalysmic Variable 1RXS J173006.4+033813
Creators: name: Bhalerao, Varun B.
name: van Kerkwijk, Marten H.
name: Harrison, Fiona A.
name: Kasliwal, Mansi M.
name: Kulkarni, S. R.
name: Rana, Vikram R.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report the discovery of 1RXS J173006.4+033813, a polar cataclysmic variable with a period of 120.21 min. The white dwarf primary has a magnetic field of B = 42+6-5 MG, and the secondary is a M3 dwarf. The system shows highly symmetric double peaked photometric modulation in the active state as well as in quiescence. These arise from a combination of cyclotron beaming and ellipsoidal modulation. The projected orbital velocity of the secondary is K2 = 390+-4 km/s. We place an upper limit of 830+-65 pc on the distance.
description: ApJ Accepted. 12 Pages, 13 Figures, 6 tables
Acceleration by Stepsize Hedging I: Multi-Step Descent and the Silver Stepsize Schedule
Creators: name: Altschuler, Jason M.
name: Parrilo, Pablo A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optimization and Control (math.OC)
subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: Can we accelerate convergence of gradient descent without changing the algorithm -- just by carefully choosing stepsizes? Surprisingly, we show that the answer is yes. Our proposed Silver Stepsize Schedule optimizes strongly convex functions in $k^{\log_ρ 2} \approx k^{0.7864}$ iterations, where $ρ=1+\sqrt{2}$ is the silver ratio and $k$ is the condition number. This is intermediate between the textbook unaccelerated rate $k$ and the accelerated rate $\sqrt{k}$ due to Nesterov in 1983. The non-strongly convex setting is conceptually identical, and standard black-box reductions imply an analogous accelerated rate $\varepsilon^{-\log_ρ 2} \approx \varepsilon^{-0.7864}$. We conjecture and provide partial evidence that these rates are optimal among all possible stepsize schedules.
 The Silver Stepsize Schedule is constructed recursively in a fully explicit way. It is non-monotonic, fractal-like, and approximately periodic of period $k^{\log_ρ 2}$. This leads to a phase transition in the convergence rate: initially super-exponential (acceleration regime), then exponential (saturation regime).
description: 7 figures
Multicasting Homogeneous and Heterogeneous Quantum States in Quantum Networks
Creators: name: Shih, Yi-Chang
name: Hsieh, Min-Hsiu
name: Wei, Hung-Yu
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper, we target the practical implementation issues of quantum multicast networks. First, we design a recursive lossless compression that allows us to control the trade-off between the circuit complexity and the dimension of the compressed quantum state. We give a formula that describes the trade-off, and further analyze how the formula is affected by the controlling parameter of the recursive procedure. Our recursive lossless compression can be applied in a quantum multicast network where the source outputs homogeneous quantum states (many copies of a quantum state) to a set of destinations through a bottleneck. Such a recursive lossless compression is extremely useful in the current situation where the technology of producing large-scale quantum circuits is limited. Second, we develop two lossless compression schemes that work for heterogeneous quantum states (many copies of a set of quantum states) when the set of quantum states satisfies a certain structure. The heterogeneous compression schemes provide extra compressing power over the homogeneous compression scheme. Finally, we realize our heterogeneous compression schemes in several quantum multicast networks, including the single-source multi-terminal model, the multi-source multi-terminal model, and the ring networks. We then analyze the bandwidth requirements for these network models.
description: 24 pages, 9 figures
title: Relation between mathematical performance, math anxiety, and affective priming in children with and without developmental dyscalculia
Creators: name: Kucian, Karin
name: Zuber, Isabelle
name: Kohn, Juliane
name: Poltz, Nadine
name: Wyschkon, Anne
name: Esser, Günter
name: von Aster, Michael
Publisher: name: Universität Potsdam
Year: 2020
Subjects: subject: 150 Psychologie

description: Many children show negative emotions related to mathematics and some even develop mathematics anxiety. The present study focused on the relation between negative emotions and arithmetical performance in children with and without developmental dyscalculia (DD) using an affective priming task. Previous findings suggested that arithmetic performance is influenced if an affective prime precedes the presentation of an arithmetic problem. In children with DD specifically, responses to arithmetic operations are supposed to be facilitated by both negative and mathematics-related primes (= negative math priming effect). We investigated mathematical performance, math anxiety, and the domain-general abilities of 172 primary school children (76 with DD and 96 controls). All participants also underwent an affective priming task which consisted of the decision whether a simple arithmetic operation (addition or subtraction) that was preceded by a prime (positive/negative/neutral or mathematics-related) was true or false. Our findings did not reveal a negative math priming effect in children with DD. Furthermore, when considering accuracy levels, gender, or math anxiety, the negative math priming effect could not be replicated. However, children with DD showed more math anxiety when explicitly assessed by a specific math anxiety interview and showed lower mathematical performance compared to controls. Moreover, math anxiety was equally present in boys and girls, even in the earliest stages of schooling, and interfered negatively with performance. In conclusion, mathematics is often associated with negative emotions that can be manifested in specific math anxiety, particularly in children with DD. Importantly, present findings suggest that in the assessed age group, it is more reliable to judge math anxiety and investigate its effects on mathematical performance explicitly by adequate questionnaires than by an affective math priming task.
description: Postprints der Universität Potsdam : Humanwissenschaftliche Reihe; 684
Lyapunov Control on Quantum Open System in Decoherence-free Subspaces
Creators: name: Wang, W.
name: Wang, L. C.
name: Yi, X. X.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A scheme to drive and manipulate a finite-dimensional quantum system in the decoherence-free subspaces(DFS) by Lyapunov control is proposed. Control fields are established by Lyapunov function. This proposal can drive the open quantum system into the DFS and manipulate it to any desired eigenstate of the free Hamiltonian. An example which consists of a four-level system with three long-lived states driven by two lasers is presented to exemplify the scheme. We have performed numerical simulations for the dynamics of the four-level system, which show that the scheme works good.
description: 5 pages, 6 figures
Isoniazid-Induced Systemic Lupus Erythematosus in a Young Female Patient Undergoing Antitubercular Therapy
Creators: name: EDITOR IJOMCR
Publisher: name: Zenodo
Year: 2025
Subjects: subject: Lupus Erythematosus, Systemic
subject: Isoniazid
subject: anti-dsdna

description: Systemic lupus erythematosus (SLE) is a chronic autoimmune disease with a subset known as drug-induced lupus erythematosus (DILE). We report the case of a 24-year-old female presenting with fever, facial rash, and myalgia following three days of isoniazid therapy for tuberculous lymphadenitis. Laboratory findings revealed pancytopenia, elevated inflammatory markers and a positive ANA profile with anti-dsDNA and anti-histone antibodies. On the basis of these findings a diagnosis of isoniazid-induced SLE was made and Isoniazid was promptly discontinued. Patient was further managed with hydroxychloroquine, corticosteroids, and supportive therapy resulting in significant improvement. This case highlights the need for heightened awareness of DILE in patients undergoing antitubercular therapy. This case also emphasizes the importance of early diagnosis and intervention to prevent severe complications.
A introdução de instrumentos populares em contexto educativo: a escola como agente de defesa da cultura local num mundo globalizado
The introduction of popular instruments in an educational context
Creators: name: Gonçalves, Carlos
name: Cristovão, Natálina
name: Esteireiro, Paulo
Publisher: name: Escola Superior de Educação de Paula Frassinetti - CIPAF
Year: 2018
Subjects: Instrumentos Populares; Política Educativa; Preservação de Património; Globalização; Escola do Futuro

description: Num mundo globalizado, a cultura local e regional está em risco de desaparecimento, cabendo à escola do futuro um importante papel de defesa e promoção do património artístico, relacionado com a identidade da comunidade onde se insere. Na Região Autónoma da Madeira (Portugal), o Governo Regional, através do seu Serviço de Educação Artística e Multimédia, começou no ano letivo 1987-88 um projeto educativo de defesa dos instrumentos populares madeirenses nas escolas, que constitui um interessante caso de estudo e que poderá servir de modelo para a integração do património regional em contexto educativo. No início do projeto, os instrumentos estavam a cair em desuso e eram raras as crianças e jovens em idade escolar que os tocavam. Após três décadas de implementação do projeto, assiste-se a uma revalorização da prática destes instrumentos, existindo milhares de alunos a tocá-los nas escolas e em grupos artísticos. Deste modo, este projeto é atualmente uma das referências portuguesas de preservação e divulgação dos instrumentos populares em contexto educativo.
 Palavras-chave
 Instrumentos Populares; Política Educativa; Preservação de Património; Globalização; Escola do Futuro.

 The introduction of popular instruments in an educational context: the school as a defense agent of local culture in a globalized world

Abstract

In a globalized world, local and regional culture is in danger of disappearing, and the “school of the future” plays an important role in the defense and promotion of artistic heritage, related to the identity of the community in which it operates. The Regional Government of the Autonomous Region of Madeira (Portugal) through its Department of Arts and Multimedia Education (DSEAM) started an educational project in 1987-88 to defend the popular Madeiran instruments in schools, which is an interesting case study and which can serve as a model for the integration of regional heritage into an educational context. At the beginning of the project, the instruments were falling into disuse and children and school-age youths who played these instruments were rare. After three decades of project implementation, there is a revaluation of the practice of these instruments, with thousands of students playing them in schools and artistic groups including these instruments in their music group formations. Thus, this project is currently one of the Portuguese references for the preservation and dissemination of popular instruments in an educational context.

Keywords

Popular Instruments; Educational policy; Good practices; Musical Heritage.
description: Saber & Educar, n. 24 (2018): A Educação Artística na Escola do Século XXI
The interplay between the condensate and instantons
Creators: name: Vercauteren, David
name: Verschelde, Henri
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Using the Local Composite Operator formalism, we analytically study the dimension two gluon condensate in the presence of instantons. We first use the dilute gas approximation and partially solve the infrared problem of instanton physics. In order to find quantitative results, however, we turn to an instanton liquid model, where we find a two-component picture of the condensate: one component comes from instantons, a second component is non-perturbatively generated by quantum fluctuations around the instantons.
description: 8 pages, talk presented by David Vercauteren at The Many Faces of QCD, November 1-5, 2010, Ghent, Belgium
Finite-temperature phase diagram of the Heisenberg-Kitaev model
Creators: name: Reuther, Johannes
name: Thomale, Ronny
name: Trebst, Simon
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We discuss the finite-temperature phase diagram of the Heisenberg-Kitaev model on the hexagonal lattice, which has been suggested to describe the spin-orbital exchange of the effective spin-1/2 momenta in the Mott insulating Iridate Na2IrO3. At zero-temperature this model exhibits magnetically ordered states well beyond the isotropic Heisenberg limit as well as an extended gapless spin liquid phase around the highly anisotropic Kitaev limit. Using a pseudofermion functional renormalization group (RG) approach, we extract both the Curie-Weiss scale and the critical ordering scale (for the magnetically ordered states) from the RG flow of the magnetic susceptibility. The Curie-Weiss scale switches sign -- indicating a transition of the dominant exchange from antiferromagnetic to ferromagnetic -- deep in the magnetically ordered regime. For the latter we find no significant frustration, i.e. a substantial suppression of the ordering scale with regard to the Curie-Weiss scale. We discuss our results in light of recent experimental susceptibility measurements for Na2IrO3.
description: 4+e pages, 5 figures
Conductance and noise signatures of Majorana backscattering
Creators: name: Chung, Suk Bum
name: Qi, Xiao-Liang
name: Maciejko, Joseph
name: Zhang, Shou-Cheng
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We propose a conductance measurement to detect the backscattering of chiral Majorana edge states. Because normal and Andreev processes have equal probability for backscattering of a single chiral Majorana edge state, there is qualitative difference from backscattering of a chiral Dirac edge state, giving rise to half-integer Hall conductivity and decoupling of fluctuation in incoming and outgoing modes. The latter can be detected through thermal noise measurement. These experimental signatures of Majorana fermions are robust at finite temperature and do not require the size of the backscattering region to be mesoscopic.
description: 4.1 pages, 4 figures
Limiting soft particle production and QCD
Creators: name: Ochs, Wolfgang
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present some basic elements of the treatment of particle multiplicities in jets from high energy collisions within perturbative QCD. Then we discuss the universal features of the inclusive particle spectrum for the limiting case of momentum p\to 0 (or p_T\to 0) as expected from soft QCD gluon bremsstrahlung. The energy independence of the invariant particle density in this limit I_0=E dN/d^3p|_{p\to 0} is predicted as well as the dependence of this quantity on the the colour factors characteristic of the underlying partonic processes. These properties are first recalled from e+e- collisions and then extended to pp and nuclear collisions according to Ref. 1. Present data support these predictions. It will be interesting to see whether new incoherent contributions show up in the new energy regime of LHC.
description: 20 pages, 5 figures, presented at the 50th Cracow School of Theoretical Physics, 9-19 June 2010, Zakopane, Poland
Quantum autoencoders using mixed reference states
Creators: name: Ma, Hailan
name: Mooney, Gary J.
name: Petersen, Ian R.
name: Hollenberg, Lloyd C. L.
name: Dong, Daoyi
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: One of the fundamental tasks in quantum information theory is quantum data compression, which can be realized via quantum autoencoders that first compress quantum states to low-dimensional ones and then recover to the original ones with a reference state. When taking a pure reference state, there exists an upper bound for the encoding fidelity, which limits the compression of states with high entropy. To overcome the entropy inconsistency, we allow the reference state to be a mixed state and propose a cost function that combines the encoding fidelity and the quantum mutual information. We consider the reference states to be a mixture of maximally mixed states and pure states and propose three strategies for setting the ratio of mixedness. Numerical simulations of different states and experimental implementations on IBM quantum devices illustrate the effectiveness of our approach.
Formula for the Absorption Coefficient for Multi-Wall Nanotubes
Creators: name: Gumbs, Godfrey
name: Balassis, Antonios
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present a formalism for calculating the absorption coefficient of a pair of coaxial tubules. A spatially nonlocal, dynamical self-consistent field theory is obtained by calculating the electrostatic potential produced by the charge density fluctuations as well as the external electric field. There are peaks in the absorption spectrum arising from plasma excitations corresponding either to plasmon or particle-hole modes. In this paper, we numerically calculate the plasmon contribution to the absorption spectrum when an external electric field is applied. The number of peaks depends on the radius of the inner as well as outer tubule. The height of each peak is determined by the plasmon wavelength and energy. For a chosen wave number, the most energetic plasmon has the highest peak corresponding to the largest oscillator strength of the excited modes. Some of the low-frequency plasmon modes have such weak coupling to an external electric field that they are not seen on the same scale as the modes with larger energy of excitation. We plot the peak positions of the plasmon excitations for a pair of coaxial tubules. The coupled modes on the two tubules are split by the Coulomb interaction. The energies of the two highest plasmon branches increase with the radius of the outer tubule. On the contrary, the lowest modes decrease in energy as this radius is increased. No effects due to inter-tubule hopping are included in these calculations.
Dynamic Visualization and Fast Computation for Convex Clustering via Algorithmic Regularization
Creators: name: Weylandt, Michael
name: Nagorski, John
name: Allen, Genevera I.
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Space Science
subject: Pharmacology
subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Science Policy

description: Convex clustering is a promising new approach to the classical problem of clustering, combining strong performance in empirical studies with rigorous theoretical foundations. Despite these advantages, convex clustering has not been widely adopted, due to its computationally intensive nature and its lack of compelling visualizations. To address these impediments, we introduce Algorithmic Regularization, an innovative technique for obtaining high-quality estimates of regularization paths using an iterative one-step approximation scheme. We justify our approach with a novel theoretical result, guaranteeing global convergence of the approximate path to the exact solution under easily checked non-data-dependent assumptions. The application of algorithmic regularization to convex clustering yields the Convex Clustering via Algorithmic Regularization Paths (CARP) algorithm for computing the clustering solution path. On example datasets from genomics and text analysis, CARP delivers over a 100-fold speed-up over existing methods, while attaining a finer approximation grid than standard methods. Furthermore, CARP enables improved visualization of clustering solutions: the fine solution grid returned by CARP can be used to construct a convex clustering-based dendrogram, as well as forming the basis of a dynamic path-wise visualization based on modern web technologies. Our methods are implemented in the open-source R package clustRviz, available at https://github.com/DataSlingers/clustRviz. Supplementary materials for this article are available online.