cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Probing non-Markovian quantum dynamics with data-driven analysis: Beyond "black-box" machine learning models
Creators: name: Luchnikov, I. A.
name: Kiktenko, E. O.
name: Gavreev, M. A.
name: Ouerdane, H.
name: Filippov, S. N.
name: Fedorov, A. K.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A precise understanding of the influence of a quantum system's environment on its dynamics, which is at the heart of the theory of open quantum systems, is crucial for further progress in the development of controllable large-scale quantum systems. However, existing approaches to account for complex system-environment interaction in the presence of memory effects are either based on heuristic and oversimplified principles or give rise to computational difficulties. In practice, one can leverage on available experimental data and replace first-principles simulations with a data-driven analysis that is often much simpler. Inspired by recent advances in data analysis and machine learning, we propose a data-driven approach to the analysis of the non-Markovian dynamics of open quantum systems. Our method allows, on the one hand, capturing the most important characteristics of open quantum systems such as the effective dimension of the environment and the spectrum of the joint system-environment quantum dynamics, and, on the other hand, reconstructing a predictive model of non-Markovian quantum dynamics, and denoising the measured quantum trajectories. We demonstrate the performance of the proposed approach with various models of open quantum systems, including a qubit coupled with a finite environment, a spin-boson model, and the damped Jaynes-Cummings model.
Human-Induced Trophic Cascades along the Fecal Detritus Pathway
Creators: name: Nichols, Elizabeth
name: Uriarte, Maria
name: Peres, Carlos A.
name: Endo, Whaldener
name: Louzada, Julio
name: Schiffler, Gustavo
name: Braga, Rodrigo Fagundes
name: Spector, Sacha H.
Publisher: name: Columbia University
Year: 2013
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: Entomology

description: Human presence and activity in tropical forest is thought to exert top-down regulation over the various ‘green-world’ pathways of plant-based foodwebs. However, these effects have never been explored for the ‘brown-world’ pathways of fecal-detritus webs. The strong effects of humans on tropical game mammals are likely to indirectly influence fecal detritivores (including Scarabaeine dung beetles), with subsequent indirect impacts on detrivore-mediated and plant-facilitating detrital processes. Across a 380-km gradient of human influence in the western Brazilian Amazon, we conducted the first landscape-level assessment of human-induced cascade effects on the fecal detritus pathway, by coupling data on human impact, game mammal and detritivore community structure, and rate measurements of a key detritus process (i.e. dung beetle-mediated secondary seed dispersal). We found evidence that human impact indirectly influences both the diversity and biomass of fecal detritivores, but not detritivore-mediated processes. Cascade strength varied across detritivore groups defined by species' traits. We found smaller-bodied dung beetles were at higher risk of local decline in areas of human presence, and that body size was a better predictor of cascade structure than fecal resource manipulation strategy. Cascade strength was also stronger in upland, unflooded forests, than in seasonally flooded forests. Our results suggest that the impact of human activity in tropical forest on fecal-detritus food web structure is mediated by both species' traits and habitat type. Further research will be required to determine the conditions under which these cascade effects influence fecal-detritus web function.
Fluctuation-induced dynamics of multiphase liquid jets with ultra-low interfacial tension
Creators: name: Sauret, Alban
name: Spandagos, Constantinos
name: Shum, Ho Cheung
Publisher: name: arXiv
Year: 2013
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: Control of fluid dynamics at the micrometer scale is essential to emulsion science and materials design, which is ubiquitous in everyday life and is frequently encountered in industrial applications. Most studies on multiphase flow focus on oil-water systems with substantial interfacial tension. Advances in microfluidics have enabled the study of multiphase flow with more complex dynamics. Here, we show that the evolution of the interface in a jet surrounded by a co-flowing continuous phase with an ultra-low interfacial tension presents new opportunities to the control of flow morphologies. The introduction of a harmonic perturbation to the dispersed phase leads to the formation of interfaces with unique shapes. The periodic structures can be tuned by controlling the fluid flow rates and the input perturbation; this demonstrates the importance of the inertial effects in flow control at ultra-low interfacial tension. Our work provides new insights into microfluidic flows at ultra-low interfacial tension and their potential applications.
Computational reproducibility of Jupyter notebooks from biomedical publications
Creators: name: Mietchen, Daniel
name: Samuel, Sheeba
Publisher: name: Zenodo
Year: 2023

description: This repo hosts the slides to the JupyterCon 2023 session "Computational reproducibility of Jupyter notebooks from biomedical publications" taking place on May 11, 15:00–15:30 (Europe/Paris), in Louis Armand 1, as per https://github.com/Daniel-Mietchen/ideas/blob/master/submissions/JupyterCon-2023.md. A video recording is available on YouTube. Abstract: In this talk, we present a study that analyzed the computational reproducibility of Jupyter notebooks extracted from GitHub repositories associated with publications indexed in the biomedical literature repository PubMed Central. We will present the key steps of the pipeline we used for assessing the reproducibility of Jupyter Notebooks. The study is based on the metadata extracted from 1419 publications from PubMed Central published in 373 journals. From the 1117 GitHub repositories associated with these publications, a total of 9625 Jupyter Notebooks were downloaded for further reproducibility analysis. The code for the pipeline is adapted from Felipe et al., 2019. We will discuss the results of the study, including variables such as programming languages, notebook structure, naming practices, modules, dependencies etc. that we found in these notebooks. We will then zoom in on common problems and practices, highlight trends and discuss potential improvements to Jupyter-related workflows associated with biomedical publications. This talk is aimed at researchers who use Jupyter notebooks to publish their results in public repositories and help them to use best practices while documenting their research.
ЁШ КЕЛИН-КУЁВ ЎРТАСИДА СОҒЛОМ ПСИХОЛОГИК МУНОСАБАТЛАРНИ РИВОЖАЛНТИРУВЧИ ПСИХОКОРРЕКЦИОН ИШЛАРНИНГ ЭМПЕРИК АСОСЛАРИ
Creators: name: Муминова, Дилноза
Publisher: name: Zenodo
Year: 2023

description: Ушбу мақолада ўзбек оилаларида ёш келин-куёв психологик қиёфасини ифодаловчи хулқ-атворнинг емперик кўрсаткичлари таҳлили ҳақида фикир мулоҳазалар келтирилган.
Conservation laws in theories with universal gravity/matter coupling
Creators: name: Minazzoli, Olivier
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In this paper, we investigate the conservation laws of different type of particles in theories with a universal gravity/matter coupling. The result brings new insights about previous studies on universal gravity/matter theories. Especially, the paper demonstrates that for perfect fluids, there is an equivalence between the assumption $Ł_m=-ε$, where $ε$ is the total energy density; and the assumption that the matter fluid current is conserved ($\nabla_σ(ρu^σ)=0$, where $ρ$ is the rest mass density). However, the main result is given in the general case where one does not make any assumption on the conservation of the matter fluid current.
description: 6 pages, accepted for publication in Phys. Rev. D
LIBER Webinar: New challenges and leading into the Post-COVID Recovery for Research Libraries
Creators: name: Cohen, Marc
name: Nolin, Emma
name: Ghesquière, Elke
name: Casaldàliga, Núria
name: Knowles, Claire
name: Morley, Fiona
Publisher: name: Zenodo
Year: 2020

description: This webinar is the second part of the 2-webinar series "Leadership in Times of Crisis" organized by LIBER Leadership Programmes Working Group. COVID-19 has created a new reality for leaders. They had to address the discomfort and fear caused by the pandemic overnight and think creatively of solutions in the moment of crisis. Research Libraries, like other organizations, are facing hard choices around which services to offer to minimize the risk to their staff, communities and business operations. Flexible leaders who can adapt and guide organizations and staff, offer hope, build communities and see new possibilities are needed more than ever. This webinar series provides an opportunity to learn about what other peer leaders are doing and exchange views to learn from each other. In the second webinar, speakers share their experience on communicating with teams. How can leaders create clarity, build resilience, and catalyze positive change? We end the webinar by presenting new challenges likely to occur in the Post-COVID-19 Recovery period.
Modeling, Analysis and Optimization of Multicast Device-to-Device Transmission
Creators: name: Lin, Xingqin
name: Ratasuk, Rapeepat
name: Ghosh, Amitava
name: Andrews, Jeffrey G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Multicast device-to-device (D2D) transmission is important for applications like local file transfer in commercial networks and is also a required feature in public safety networks. In this paper we propose a tractable baseline multicast D2D model, and use it to analyze important multicast metrics like the coverage probability, mean number of covered receivers and throughput. In addition, we examine how the multicast performance would be affected by certain factors like mobility and network assistance. Take the mean number of covered receivers as an example. We find that simple repetitive transmissions help but the gain quickly diminishes as the repetition time increases. Meanwhile, mobility and network assistance (i.e. allowing the network to relay the multicast signals) can help cover more receivers. We also explore how to optimize multicasting, e.g. by choosing the optimal multicast rate and the optimal number of retransmission times.
description: 14 pages; 8 figures; submitted to IEEE Transactions on Wireless Communications
Eduardo Sánchez de Fuentes: un creador musical polémico
Creators: name: Pacheco Valera, Irina
Publisher: name: Comparative Cultural Studies - European and Latin American Perspectives
Year: 2020

description: These pages, result of a bigger investigation about Eduardo Sánchez de Fuentes ‘s contributions to the musical patrimony of Cuba, attempts the rescue from a historical-social perspective, from the courses of the historical justice, because it is evidenced in this musician’s contributions in the field of the song, and its incursions in a meritorious way in the goods like: the operetta and in the opera, in the orchestra and in the ballet, in the oratory and in the symphonic poem, in the critic and in the musicology. This article refers to some of the fundamental budgets approached in the work of Sánchez de Fuentes, with the purpose of investigating its polemic universe in itself and by the light of the cultural counterpoint of its time, and this way to surrender deserts homage to this famous musicologist.
description: Comparative Cultural Studies - European and Latin American Perspectives, Vol. 5 No. 9 (2020)
Time-fractional Cahn-Hilliard equation: Well-posedness, degeneracy, and numerical solutions
Creators: name: Fritz, Marvin
name: Rajendran, Mabel L.
name: Wohlmuth, Barbara
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35A01, 35A02, 35D30, 35K35

description: In this paper, we derive the time-fractional Cahn-Hilliard equation from continuum mixture theory with a modification of Fick's law of diffusion. This model describes the process of phase separation with nonlocal memory effects. We analyze the existence, uniqueness, and regularity of weak solutions of the time-fractional Cahn-Hilliard equation. In this regard, we consider degenerating mobility functions and free energies of Landau, Flory--Huggins and double-obstacle type. We apply the Faedo-Galerkin method to the system, derive energy estimates, and use compactness theorems to pass to the limit in the discrete form. In order to compensate for the missing chain rule of fractional derivatives, we prove a fractional chain inequality for semiconvex functions. The work concludes with numerical simulations and a sensitivity analysis showing the influence of the fractional power. Here, we consider a convolution quadrature scheme for the time-fractional component, and use a mixed finite element method for the space discretization.
Distribution amplitudes of light-quark mesons from lattice QCD
Creators: name: Segovia, Jorge
name: Chang, Lei
name: Cloet, Ian C.
name: Roberts, Craig D.
name: Schmidt, Sebastian M.
name: Zong, Hong-shi
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We exploit a method introduced recently to determine parton distribution amplitudes (PDAs) from minimal information in order to obtain light-quark pseudoscalar and vector meson PDAs from the limited number of moments produced by numerical simulations of lattice-regularised QCD. Within errors, the PDAs of pseudoscalar and vector mesons constituted from the same valence quarks are identical; they are concave functions, whose dilation expresses the strength of dynamical chiral symmetry breaking; and SU(3)-flavour symmetry is broken nonperturbatively at the level of 10%. Notably, the appearance of precision in the lattice moments is misleading. The moments also exhibit material dependence on lattice volume, especially for the pion. Improvements need therefore be made before an accurate, unified picture of the light-front structure of light-quark pseudoscalar and vector mesons is revealed.
description: 7 pages, 4 figures, 2 tables
Towards realistic statistical models of the grid frequency
Creators: name: Kraljic, David
Publisher: name: arXiv
Year: 2021
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Systems and Control (eess.SY)
subject: FOS: Physical sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Increased share of renewable sources of energy in a power grid leads to larger deviations in grid frequency from the nominal value resulting in more challenging control and its modelling. In this paper we focus on the grid frequency for the power system of Great Britain because the large share of renewables makes it a template for other power grids in the future and because it exhibits peculiar statistical properties, such as long-term correlations in fluctuations, periodicity, bi-modality,and heavy tails in the distribution of the grid frequency. By modifications of the swing equation and the underlying noise statistics, which we justify qualitatively and quantitatively, we reproduce these peculiar statistical properties. We apply our model to realistic frequency response services and show our predictions outperform a standard swing equation model.
description: accepted to TPWRS
Capturing the diversity of multilingual societies
Creators: name: Louf, Thomas
name: Sanchez, David
name: Ramasco, Jose J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Computation and Language (cs.CL)
subject: Social and Information Networks (cs.SI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Cultural diversity encoded within languages of the world is at risk, as many languages have become endangered in the last decades in a context of growing globalization. To preserve this diversity, it is first necessary to understand what drives language extinction, and which mechanisms might enable coexistence. Here, we study language shift mechanisms using theoretical and data-driven perspectives. A large-scale empirical analysis of multilingual societies using Twitter and census data yields a wide diversity of spatial patterns of language coexistence. It ranges from a mixing of language speakers to segregation with multilinguals on the boundaries of disjoint linguistic domains. To understand how these different states can emerge and, especially, become stable, we propose a model in which language coexistence is reached when learning the other language is facilitated and when bilinguals favor the use of the endangered language. Simulations carried out in a metapopulation framework highlight the importance of spatial interactions arising from people mobility to explain the stability of a mixed state or the presence of a boundary between two linguistic regions. Further, we find that the history of languages is critical to understand their present state.
description: Main text: 12 pages, 6 figures, 51 references. Supplementary Information: 27 pages, 16 figures, 2 tables
Lesser Kinds: Foreword
Creators: name: Varzi, Achille C.
Publisher: name: Columbia University
Year: 2007
Subjects: subject: Philosophy
subject: FOS: Philosophy, ethics and religion
subject: Metaphysics

description: This issue of The Monist is devoted to the metaphysics of lesser kinds, which is to say those kinds of entity that are not generally recognized as occupying a prominent position in the categorial structure of the world. Why bother? We offer two sorts of reason. The first is methodological. In mathematics, it is common practice to study certain functions (for instance) by considering limit cases: What if x = 0? What if x is larger than any assigned value? Physics, too, often studies the (idealized) initial and boundary conditions of a given system: What would happen in the case of a perfect sphere, or a perfectly black body? In the cognitive sciences, research often thrives on the analysis of cognitive errors, perceptual illusions, brain pathologies. Also in logic one can learn a lot by studying special, anomalous scenarios such as those exhibited by the paradoxes: it is unlikely that we actually find ourselves in a soritical context, or in a liar-like situation, but the fact that we might—or simply the fact that we can conceive of such a possibility— is important enough to deserve careful consideration. In short, the odd, the unfamiliar, the extra-ordinary, the limit cases are perfectly at home in scientific and more broadly intellectual discourse at various levels, where they can be fruitfully engaged in a sophisticated way (witness the existence of specific confining and managing strategies for dealing with them); and they are important precisely because they instruct us concerning the normal, the obvious, and the paradigmatic. The same goes for metaphysics, we submit. Although its major concern is, naturally, with such core entities as substances, properties, or hunks of solid matter, a lot may be learned by paying attention to those limit cases where we find ourselves dealing with entities of much lesser kinds, whether real or putative.
Beating the jetting regime
Creators: name: Sauret, Alban
name: Shum, Ho Cheung
Publisher: name: arXiv
Year: 2013
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: We study numerically the dynamics of jets and drops in a microcapillary co-flow device. The co-flow stream encounters different flow regimes, including dripping, jetting. Using a level-set/finite element axysimmetric numerical simulation, we study the dynamics of breakup of a jet subject to flow rate perturbations. A scaling law for the width of the unperturbed jet is presented and compared to existing experimental results as well as numerical measurements. Then, we show that the introduction of a sinusoidal perturbation of the inner fluid flow rate can facilitate breakup of the fluid in regimes where a jet is usually observed. Moreover, the flow rate perturbation leads to a good control over the size and the frequency of the resulting droplets. Using theoretical modelling, we provide a criterion to determine the optimal frequency to break up the jet. We also derive scaling laws to determine the volume of inner fluid encapsulated in the emulsion droplets as a function of the frequency and to estimate the distance for the jet to break up as a function of the amplitude of perturbation. These scaling laws are in good agreement with results of numerical simulations. Our work suggests a novel approach and offers guiding principles to break up liquid jets in cases where dripping is difficult to achieve.
The Ptolemy field of $3$-manifold-representations
Creators: name: Garoufalidis, Stavros
name: Goerner, Matthias
name: Zickert, Christian K.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: The Ptolemy coordinates for boundary-unipotent SL(n,C)-representations of a 3-manifold group were introduced in Garoufalidis-Thurston-Zickert inspired by the A-coordinates on higher Teichmüller space due to Fock and Goncharov. In this paper, we define the Ptolemy field of a (generic) PSL(2,\C)-representation and prove that it coincides with the trace field of the representation. This gives an efficient algorithm to compute the trace field of a cusped hyperbolic manifold.
description: 21 pages, 23 figures
Temporal Parts: Foreword
Creators: name: Varzi, Achille C.
Publisher: name: Columbia University
Year: 2000
Subjects: subject: Philosophy
subject: FOS: Philosophy, ethics and religion
subject: Metaphysics

description: Some entities—perhaps all entities—have spatial parts, parts whose spatial location does not coincide with that of the whole. My hands are spatial parts of my body in this sense, and from my window I can only see part of the parade, not all of it. Some entities have temporal parts, too, or so we are inclined to say. The first inning is a temporal part of a ball game in this sense—it occupies a shorter stretch of time, and much more will have to happen before the game is over. The analogy between spatial and temporal parts may be obvious in some cases, especially if time is construed as just another dimension on a par with the three spatial dimensions. But whereas philosophers tend to agree on the idea that ordinary objects and events are spatially extended, and thus have spatial parts, there is controversy concerning their temporal status. On the one hand are philosophers who maintain that all such entities are temporally extended in a literal sense; all such entities persist through time by having different temporal parts at different times just as they all extend across space by having different spatial parts at different places. On the other hand are philosophers who deny this. According to such philosophers some spatially extended entities, such as processes and other events, have temporal parts. Other entities do not; they persist through time by being wholly and completely present at any moment at which they exist at all.
Invariance and definability, with and without equality
Creators: name: Bonnay, Denis
name: Engström, Fredrik
Publisher: name: arXiv
Year: 2013
Subjects: subject: Logic (math.LO)
subject: FOS: Mathematics

description: The dual character of invariance under transformations and definability by some operations has been used in classical work by for example Galois and Klein. Following Tarski, philosophers of logic have claimed that logical notions themselves could be characterized in terms of invariance. In this paper, we generalize a correspondence due to Krasner between invariance under groups of permutations and definability in $\La_{\infty\infty}$ so as to cover the cases (quantifiers, logics without equality) that are of interest in the logicality debates, getting McGee's theorem about quantifiers invariant under all permutations and definability in pure $\La_{\infty\infty}$ as a particular case. We also prove some optimality results along the way, regarding the kind of relations which are needed so that every subgroup of the full permutation group is characterizable as a group of automorphisms.
Implementing a FAIR Repository and Data Integration System for CRC 1266
Creators: name: Strohm, Steffen
name: Bünning, Hartwig
name: Renz, Matthias
Publisher: name: Zenodo
Year: 2023
Subjects: FAIR
Information System
Usability
Interdisciplinary Research
Multidisciplinary Research
Metadata
Data Integration
SFB 1266
Collaborative Research Center

description: Recent advances in digital technologies provide researchers with powerful means to potentially improve and accelerate their research activity by sharing and fusing their data and results effectively. However, new technologies often add new layers of complexity that need to be dealt with. Otherwise, using these tools and approaches becomes impractical. Within the Collaborative Research Center 1266 "Scales of Transformation" the information system LandMan is implemented to satisfy the FAIR principles, guaranteeing research data and results to be findable, accessible, interoperable and reproducible. This work will provide an overview of challenges in data quality, data organization, data sparsity and data fusion combined with a socio-technical perspective on the process of developing and implementing the LandMan repository and data integration system. In this process a significant shift from full integration towards a more practical solution had to be undertaken to align the system with scientific work requirements and ensure its usability.
A Realistic Predictor for Pedestrian Attribute Recognition
Creators: name: Specker, Andreas
Publisher: name: Karlsruhe
Year: 2020

description: The application of video surveillance systems in public areas to ensure public security is becoming increasingly important. A major task when evaluating the arising amount of video data is to find the occurrences of a person-of-interest on the basis of a testimony. For the comparison of a person’s description with persons in the video data, the attributes of all persons must be recognized automatically. However, typical approaches to pedestrian attribute recognition simply predict all attributes for a person, regardless the visibility of relevant attributes. To address this problem, the concept of realistic predictors is used in this work to determine and improve the reliability of pedestrian attribute recognition.
X-ray observations of the Compton-thick Seyfert 2 galaxy, NGC 5643
Creators: name: Matt, G.
name: Bianchi, S.
name: Marinucci, A.
name: Guainazzi, M.
name: Iwawasa, K.
name: Bailon, E. Jimenez
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present results from a ~55 ks long XMM-Newton observation of the obscured AGN, NGC 5643, performed in July 2009. A previous, shorter (about 10 ks) XMM-Newton observation in February 2003 had left two major issues open, the nature of the hard X-ray emission (Compton-thin vs Compton-thick) and of the soft X-ray excess (photoionized vs collisionally ionized matter). The new observation shows that the source is Compton-thick and that the dominant contribution to the soft X-ray emission is by photoionized matter (even if it is still unclear whether collisionally ionized matter may contribute as well). We also studied three bright X-ray sources that are in the field of NGC 5643. The ULX NGC 5643 X-1 was confirmed to be very luminous, even if more than a factor 2 fainter than in 2003. We then provided the first high quality spectrum of the cluster of galaxies Abell 3602. The last source, CXOJ143244.5-442020, is likely an unobscured AGN, possibly belonging to Abell 3602.
description: 6 pages. Accepted for publication in A&A
The Role of E-Government as a Stimulus for Economic Growth
Creators: name: AbdelAzim, Riem
name: Salman, Omar
name: Henawy, Ibrahim El
Publisher: name: figshare
Year: 2020
Subjects: subject: 150302 Business Information Systems
subject: FOS: Economics and business
subject: 150301 Business Information Management (incl. Records, Knowledge and Information Management, and Intelligence)
subject: 150399 Business and Management not elsewhere classified

description: This research paper reviews existing literature of two domains, Electronic Government (e-Government) and Economic Growth. Information and Communication Technologies (ICT), Technology Acceptance Models (TAM), and Neoclassical theory are ‎all discussed to help develop an integrated view of both domains. More specifically, in terms of ‎theory, it is hoped that this paper may extend its explanatory power beyond current limits. This ‎paper presents, for the benefit of decision makers, a practical framework held together by a logical ‎cohesion between the units of analysis, structures, and processes. This framework is ‎derived from ‎the basic theories and models and latest research done in these fields. It is found that the key ‎variable linking e-Government portals to the economic growth is Competitiveness. In this conception, ‎competitiveness becomes the mediator through which the antecedent variable of e-government ‎leads to a change in the consequent variable of economic growth. Simply put, e-government may ‎stimulate economic growth via enhancing the competitiveness of economic actors. Hence, ‎decision makers in different governmental bodies, may use this integrated framework as a tool to ‎promote technology-based economic growth in the context of competitiveness goals.‎
КОММУНИКАТИВНО-ОРИЕНТИРОВАННЫЕ МЕТОДЫ.
Creators: name: Акбаева, Хулкар
Publisher: name: Zenodo
Year: 2023

description: Коммуникативный метод обучения иностранным языкам возник на основе коммуникативного подхода. Его ключевые положения по-разному трактуются учеными. Многие современные зарубежные ученые считают, что процесс обучения должен опираться только на содержательную сторону, реальное общение и исключать работу над языковой формой. Другая крайность характерна для некоторых отечественных методистов и практиков, которые декларируют применение коммуникативного метода, но на деле индивидуально и речь.
Danzones y Razones
Creators: name: Alán Núñez, Yamile
name: Ravenna, Roberto
Publisher: name: Comparative Cultural Studies - European and Latin American Perspectives
Year: 2020

description: The documentary, which completes this special issue dedicated to Cuban music, considered from different points of view, historical, anthropological, religious, as an expression of identity, is devoted to a musical genre, the Danzon, which runs through Cuban history since origins to our days. Scholars such as Llettis Ramos, musicologist and researcher, at the National Music Museum, Rembert Egues, conductor and composer, Gladys Egues, journalist, both children of the flutist and composer Richard Egues, and others, discuss the Danzon's long performance as a clear example of syncretization between European music and Cuban music imported from Africa. Danzon arrives in Cuba with French refugees (colons and their families but also their service staff made up of mulattoes) following the independence of Haiti in 1804. The "French" bring their dances with them, the minuet , the gavotta, the contradance. The Spaniards disliking the "contra", the contradance became DANZON . During the 19th century, the danzon was developed by two musicians, Manuel Samuel in Havana and Miguel Falide in Matanzas, and was practiced in ballrooms, frequented by middle classes and men of the upper classes ... who met women - even mulatto women - from other social classes. Revitalized in the twenties with Son, it gave origin to Chachacha and mambo. The documentary then focuses on the Danzon Gladys, composed by Richard Egues for his daughter Gladys on 11/15/1961, on the occasion of her 15 years. The Gladys danzon then became the classic musical accompaniment in the parties for the fifteen years of Cuban adolescents. Gladys Egues, one of the personalities at the origin of the documentary, tells the privilege of having been the inspiration of a music that still enters the homes of all Cubans today.
description: Comparative Cultural Studies - European and Latin American Perspectives, Vol. 5 No. 9 (2020)
Investigation of the Puzzling Abundance Pattern in the Stars of the Fornax Dwarf Spheroidal Galaxy
Creators: name: Li, Hongjie
name: Cui, Wenyuan
name: Zhang, Bo
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Many works have found unusual characteristics of elemental abundances in nearby dwarf galaxies. This implies that there is a key factor of galactic evolution that is different from that of the Milky Way (MW). The chemical abundances of the stars in the Fornax dwarf spheroidal galaxy (Fornax dSph) provide excellent information for setting constraints on the models of the galactic chemical evolution. In this work, adopting the five-component approach, we fit the abundances of the Fornax dSph stars, including $α$ elements, iron group elements and neutron-capture elements. For most sample stars, the relative contributions from the various processes to the elemental abundances are not usually in the MW proportions. We find that the contributions from massive stars to the primary $α$ elements and iron group elements increase monotonously with increasing [Fe/H]. This means that the effect of the galactic wind is not strong enough to halt star formation and the contributions from massive stars to $α$ elements did not halted for [Fe/H]$\lesssim$-0.5. The average contributed ratios of various processes between the dSph stars and the MW stars monotonously decrease with increasing progenitor mass. This is important evidence of a bottom-heavy initial mass function (IMF) for the Fonax dSph, compared to the MW. Considering a bottom-heavy IMF for the dSph, the observed relations of [$α$/Fe] versus [Fe/H], [iron group/Fe] versus [Fe/H] and [neutron-capture/Fe] versus [Fe/H] for the dSph stars can be explained.
description: 38 pages, 11 figures, 2 tables. Accepted for publication in ApJ
Quantum Multiparameter Estimation: Exploring Fundamental Limits and Testing Quantum Mechanics
Creators: name: Conlon, Lorcan
Publisher: name: The Australian National University
Year: 2023

description: Quantum mechanics simultaneously offers unique opportunities for, and identifies restrictions on, the measurement of physical quantities. On one hand, the field of quantum metrology leverages quantum resources to enhance the accuracy of measurements. On the other hand, the uncertainty principle, a cornerstone of quantum mechanics, states that noncommuting observables cannot be simultaneously measured with an arbitrary accuracy. Quantum multiparameter estimation sits at the interface of these conflicting viewpoints; utilising quantum resources to overcome the inherent incompatibility of measuring multiple different observables. This thesis investigates the fundamental limits of quantum multiparameter estimation and its applications. We begin by introducing the Nagaoka-Hayashi bound, which sets limits on the precision attainable when estimating multiple parameters with separable, non-entangling, measurements. This contrasts with the most widely used bound in quantum metrology, the Holevo Cramer-Rao bound, which can be reached when using entangling measurements on infinitely many copies of the probe state. Using the Nagaoka-Hayashi Cramer-Rao bound, we show that the Holevo Cramer-Rao bound cannot be saturated in many physically relevant scenarios, raising questions as to its utility. Next, we develop and implement a measurement which entangles two copies of a quantum system. With this, we surpass the separable measurement limit and saturate, for the first time, the theoretical limit for entangling measurements on two copies of the quantum system. The measurement we develop also has major implications for the uncertainty principle. With this measurement, we violate uncertainty relations previously thought to be "universally valid". We then apply the techniques developed to probe fundamental aspects of quantum information. We first experimentally demonstrate that entangling measurements can help distinguish between two non-orthogonal quantum states. Secondly, using Cramer-Rao bounds we theoretically and experimentally map a quantum metrology task to secure quantum communication. Finally, we develop and demonstrate a novel measurement for testing the postulates of quantum mechanics.
Quantum criticality in a metallic spin liquid
Creators: name: Tokiwa, Y.
name: Ishikawa, J. J.
name: Nakatsuji, S.
name: Gegenwart, P.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: When magnetic order is suppressed by frustrated interactions, spins form a highly correlated fluctuating "spin liquid" state down to low temperatures. Magnetic order of local moments can also be suppressed when they are fully screened by conduction electrons through the Kondo effect. Thus, the combination of strong geometrical frustration and Kondo screening may lead to novel types of quantum phase transitions. We report low-temperature thermodynamic measurements on the frustrated Kondo lattice Pr$_2$Ir$_2$O$_7$, which displays a chiral spin liquid state below 1.5 K due to the frustrated interaction between Ising 4f local moments and their interplay with Ir conduction electrons. Our results provide a first clear example of zero-field quantum critical scaling that emerges in a spin liquid state of a highly frustrated metal.
description: to be published in Nature Materials
Cosmological Geometric Phase From Pure Quantum States: A study without/with having Bell's inequality violation
Creators: name: Choudhury, Sayantan
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Other Condensed Matter (cond-mat.other)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper, using the concept of Lewis Riesenfeld invariant quantum operator method for finding continuous eigenvalues of quantum mechanical wave functions we derive the analytical expressions for the cosmological geometric phase, which is commonly identified to be the Pancharatnam Berry phase from primordial cosmological perturbation scenario. We compute this cosmological geometric phase from two possible physical situations,(1) In the absence of Bell's inequality violation and (2) In the presence of Bell's inequality violation having the contributions in the sub Hubble region ($-kτ\gg 1$), super Hubble region ($-kτ\ll 1$) and at the horizon crossing point ($-kτ= 1$) for massless field ($m/{\cal H}\ll 1$), partially massless field ($m/{\cal H}\sim 1$) and massive/heavy field ($m/{\cal H}\gg 1$), in the background of quantum field theory of spatially flat quasi De Sitter geometry. The prime motivation for this work is to investigate the various unknown quantum mechanical features of primordial universe. To give the realistic interpretation of the derived theoretical results we express everything initially in terms of slowly varying conformal time dependent parameters, and then to connect with cosmological observation we further express the results in terms of cosmological observables, which are spectral index/tilt of scalar mode power spectrum ($n_ζ$) and tensor-to-scalar ratio ($r$). Finally, this identification helps us to provide the stringent numerical constraints on the Pancharatnam Berry phase, which confronts well with recent cosmological observation.
description: 60 pages, 20 figures, 1 table, Revised version accepted for publication in Fortschritte der Physik - Progress of Physics
Hyper-Convolution Networks for Biomedical Image Segmentation
Creators: name: Ma, Tianyu
name: Dalca, Adrian V.
name: Sabuncu, Mert R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: The convolution operation is a central building block of neural network architectures widely used in computer vision. The size of the convolution kernels determines both the expressiveness of convolutional neural networks (CNN), as well as the number of learnable parameters. Increasing the network capacity to capture rich pixel relationships requires increasing the number of learnable parameters, often leading to overfitting and/or lack of robustness. In this paper, we propose a powerful novel building block, the hyper-convolution, which implicitly represents the convolution kernel as a function of kernel coordinates. Hyper-convolutions enable decoupling the kernel size, and hence its receptive field, from the number of learnable parameters. In our experiments, focused on challenging biomedical image segmentation tasks, we demonstrate that replacing regular convolutions with hyper-convolutions leads to more efficient architectures that achieve improved accuracy. Our analysis also shows that learned hyper-convolutions are naturally regularized, which can offer better generalization performance. We believe that hyper-convolutions can be a powerful building block in future neural network architectures for computer vision tasks. We provide all of our code here: https://github.com/tym002/Hyper-Convolution
description: WACV 2022
Pose2Drone: A Skeleton-Pose-based Framework for Human-Drone Interaction
Creators: name: Marinov, Zdravko
name: Vasileva, Stanka
name: Wang, Qing
name: Seibold, Constantin
name: Zhang, Jiaming
name: Stiefelhagen, Rainer
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Drones have become a common tool, which is utilized in many tasks such as aerial photography, surveillance, and delivery. However, operating a drone requires more and more interaction with the user. A natural and safe method for Human-Drone Interaction (HDI) is using gestures. In this paper, we introduce an HDI framework building upon skeleton-based pose estimation. Our framework provides the functionality to control the movement of the drone with simple arm gestures and to follow the user while keeping a safe distance. We also propose a monocular distance estimation method, which is entirely based on image features and does not require any additional depth sensors. To perform comprehensive experiments and quantitative analysis, we create a customized testing dataset. The experiments indicate that our HDI framework can achieve an average of 93.5\% accuracy in the recognition of 11 common gestures. The code is available at: https://github.com/Zrrr1997/Pose2Drone
Resultant-based Elimination in Ore Algebra
Creators: name: Rasheed, Raqeeb
Publisher: name: arXiv
Year: 2021
Subjects: subject: Symbolic Computation (cs.SC)
subject: FOS: Computer and information sciences

description: We consider resultant-based methods for elimination of indeterminates of Ore polynomial systems in Ore algebra. We start with defining the concept of resultant for bivariate Ore polynomials then compute it by the Dieudonne determinant of the polynomial coefficients. Additionally, we apply noncommutative versions of evaluation and interpolation techniques to the computation process to improve the efficiency of the method. The implementation of the algorithms will be performed in Maple to evaluate the performance of the approaches.
description: An updated (and shorter) version published in the SYNASC '21 proceedings (IEEE CS) with the title "Resultant-based Elimination for Skew Polynomials"
Deep Luminosity Functions and Colour-Magnitude Relations for Cluster Galaxies at 0.2 < z < 0.6
Creators: name: De Propris, R.
name: Phillipps, S.
name: Bremer, M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We derive deep $I$ band luminosity functions and colour-magnitude diagrams from HST imaging for eleven $0.2 0.4$ that are not encountered locally. Surface brightness selection effects preferentially influence the detectability of faint red galaxies, accounting for claims of evolution at the faint end.
description: 21 pages. A series of figures for individual clusters (the full sample) will be made available on the MNRAS website. Accepted by MNRAS
Towards a Formal Model for Quantifying Trust in Distributed Usage Control Systems
Creators: name: Wagner, Paul Georg
Publisher: name: Karlsruhe
Year: 2019

description: Distributed usage control is a form of usage control that spans over multiple domains and computer systems. As a result, usage control components responsible for evaluating policies, gathering information, executing actions and enforcing decisions are operated in the vicinity of different stakeholders with conflicting interests. In order to prevent malicious stakeholders from manipulating these components, remote attestation can be used to verify the integrity of their code base. However, in a distributed case it is not always apparent what sequence of attestations is necessary and which verifier should conduct them. Furthermore, it is unclear what impact a failed attestation has on the trustworthiness of the whole usage control system. To solve these questions, it is necessary to identify which agents need to trust each other in order to securely execute a certain usage control function. Then the sequence of remote attestations that occur across the distributed usage control system can be examined accordingly. In this work we develop a formal model that represents the trust relationships of distributed usage control systems with multiple collaborating actors. Based on the conducted attestations we define simple binary and non-binary trust metrics that quantify the trust level a data owner can expect at a certain point in time. Finally we show how the model can be used to determine the level of trust reached in a real-world scenario.
Recall: A Framework for Long-Term AI Memory
Creators: name: BHOUMIK, SAPTAK
Publisher: name: Zenodo
Year: 2025
Subjects: subject: Machine learning
subject: Machine Learning
subject: Artificial intelligence
subject: Graph theory
subject: Memory

description: Current AI memory systems often suffer from excessive rigidity (as in traditional databases) or opacity(as in neural network-based approaches), hindering efficient knowledge storage, retrieval, and updating, particularly for logical or dynamic information.

Recall proposes a balanced alternative: a memory framework combining a flexible graph structure with temporal awareness, logic storage capabilities, and trust-based conflict resolution. This design aims to create a more adaptable and transparent system for long-term AI memory.

This paper provides a high-level introduction to the Recall framework, presenting its core concepts and design motivations while avoiding technical implementation details.