cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Parallelizing Computation of Expected Values in Recombinant Binomial Trees
Creators: name: Popuri, Sai K.
name: Raim, Andrew M.
name: Neerchal, Nagaraj K.
name: Gobbert, Matthias K.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Computation (stat.CO)
subject: Computational Finance (q-fin.CP)
subject: FOS: Computer and information sciences
subject: FOS: Economics and business

description: Recombinant binomial trees are binary trees where each non-leaf node has two child nodes, but adjacent parents share a common child node. Such trees arise in finance when pricing an option. For example, valuation of a European option can be carried out by evaluating the expected value of asset payoffs with respect to random paths in the tree. In many variants of the option valuation problem, a closed form solution cannot be obtained and computational methods are needed. The cost to exactly compute expected values over random paths grows exponentially in the depth of the tree, rendering a serial computation of one branch at a time impractical. We propose a parallelization method that transforms the calculation of the expected value into an "embarrassingly parallel" problem by mapping the branches of the binomial tree to the processes in a multiprocessor computing environment. We also propose a parallel Monte Carlo method which takes advantage of the mapping to achieve a reduced variance over the basic Monte Carlo estimator. Performance results from R and Julia implementations of the parallelization method on a distributed computing cluster indicate that both the implementations are scalable, but Julia is significantly faster than a similarly written R code. A simulation study is carried out to verify the convergence and the variance reduction behavior in the proposed Monte Carlo method.
description: 19 pages and 5 figures (png/jpeg files)
On the group of purely inseparable points of an abelian variety defined over a function field of positive characteristic II
Creators: name: Rössler, Damian
Publisher: name: arXiv
Year: 2017
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14K05

description: Let $A$ be an abelian variety over the function field $K$ of a curve over a finite field. We describe several mild geometric conditions ensuring that the group $A(K^{\rm perf})$ is finitely generated and that the $p$-primary torsion subgroup of $A(K^{\rm sep})$ is finite. This gives partial answers to questions of Scanlon, Ghioca and Moosa, and Poonen and Voloch. We also describe a simple theory (used to prove our results) relating the Harder-Narasimhan filtration of vector bundles to the structure of finite flat group schemes of height one over projective curves over perfect fields. Finally, we use our results to give a complete proof of a conjecture of Esnault and Langer on Verschiebung divisibility of points in abelian varieties over function fields.
description: This third version contains a complete proof of the conjecture of Esnault and Langer Verschiebung divisibility (not only over the algebraic closure of a finite field, as in the previous version)
Local knowledge spillovers and the effects of related and unrelated variety on the novelty of innovation
Creators: name: Mascarini, Suelene
name: Garcia, Renato
name: Quatraro, Francesco
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Science Policy

description: Knowledge spillovers have been identified as a factor affecting the unequal distribution of innovation in space. In this paper we aim to understand how territorial factors shape the novelty degree of innovations. Thus, we perform an empirical analysis that relates territorial factors to innovative performance at the firm level. Our results show that local knowledge spillovers from research and development expenditures are positively associated with upper-level innovation, while local knowledge spillovers from total innovation expenditures are not related to the degree of novelty of innovation. Furthermore, the impacts on innovation are also moderated by related and unrelated varieties since firms in regions with higher regional-related variety are less likely to generate upper-level innovation.
Internet of Things-aided Smart Grid: Technologies, Architectures, Applications, Prototypes, and Future Research Directions
Creators: name: Saleem, Yasir
name: Crespi, Noel
name: Rehmani, Mubashir Husain
name: Copeland, Rebecca
Publisher: name: arXiv
Year: 2017
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Traditional power grids are being transformed into Smart Grids (SGs) to address the issues in existing power system due to uni-directional information flow, energy wastage, growing energy demand, reliability and security. SGs offer bi-directional energy flow between service providers and consumers, involving power generation, transmission, distribution and utilization systems. SGs employ various devices for the monitoring, analysis and control of the grid, deployed at power plants, distribution centers and in consumers' premises in a very large number. Hence, an SG requires connectivity, automation and the tracking of such devices. This is achieved with the help of Internet of Things (IoT). IoT helps SG systems to support various network functions throughout the generation, transmission, distribution and consumption of energy by incorporating IoT devices (such as sensors, actuators and smart meters), as well as by providing the connectivity, automation and tracking for such devices. In this paper, we provide a comprehensive survey on IoT-aided SG systems, which includes the existing architectures, applications and prototypes of IoT-aided SG systems. This survey also highlights the open issues, challenges and future research directions for IoT-aided SG systems.
Child material deprivation: within region disparities by degree of urbanization
Creators: name: Moro-Egido, Ana I.
name: Navarro, María
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biotechnology
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Science Policy
subject: Mental Health

description: This paper analyses the impact of degree of urbanization on child material deprivation in Spain. Using the EU-SILC 2009 and 2014 special modules on material deprivation, we find that living in a city or town increases child material deprivation to a larger extent than household material deprivation and income. Differentiating by needs, the provision of children’s basic needs does not respond to household material deprivation, income or degree of urbanization, whereas the provision of educational/leisure needs does. Our findings might be of help in designing more effective policies intended to alleviate the incidence of child material deprivation beyond income-related programmes.
Trade liberalization and firms’ productivity in Vietnam: the role of local business environment
Creators: name: Le, Quoc Thai
name: Tomasi, Chiara
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biophysics
subject: Physical Sciences not elsewhere classified
subject: Molecular Biology
subject: Pharmacology
subject: Environmental Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
subject: Science Policy

description: This paper examines how frictions in the local business environment where firms operate alter the productivity gains from trade. Using Vietnamese firm-level data from 2006 to 2012, the analysis provides robust evidence of a positive effect of trade opening on firms’ efficiency. However, distortions that operate through certain local market features in the form of unenforceable property rights, an ineffective land-titling system, bureaucratic hurdles and labour market frictions play a crucial role in the transmission of trade liberalization shocks. These findings have important policy implications because they suggest that complementary policies addressing local market constraints need to be implemented alongside trade reforms.
Data-driven model reduction and transfer operator approximation
Creators: name: Klus, Stefan
name: Nüske, Feliks
name: Koltai, Péter
name: Wu, Hao
name: Kevrekidis, Ioannis
name: Schütte, Christof
name: Noé, Frank
Publisher: name: arXiv
Year: 2017
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: In this review paper, we will present different data-driven dimension reduction techniques for dynamical systems that are based on transfer operator theory as well as methods to approximate transfer operators and their eigenvalues, eigenfunctions, and eigenmodes. The goal is to point out similarities and differences between methods developed independently by the dynamical systems, fluid dynamics, and molecular dynamics communities such as time-lagged independent component analysis (TICA), dynamic mode decomposition (DMD), and their respective generalizations. As a result, extensions and best practices developed for one particular method can be carried over to other related methods.
Geometric Entanglement and Quantum Phase Transition in Generalized Cluster-XY models
Creators: name: Deger, Aydin
name: Wei, Tzu-Chieh
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In this work, we investigate quantum phase transition (QPT) in a generic family of spin chains using the ground-state energy, the energy gap, and the geometric measure of entanglement (GE). In many of prior works, GE per site was used. Here, we also consider GE per block with each block size being two. This can be regarded as a coarse grain of GE per site. We introduce a useful parameterization for the family of spin chains that includes the XY models with n-site interaction, the GHZ-cluster model and a cluster-antiferromagnetic model, the last of which exhibits QPT between a symmetry-protected topological (SPT) phase and a symmetry-breaking antiferromagnetic phase. As the models are exactly solvable, their ground-state wavefunctions can be obtained and thus their GE can be studied. It turns out that the overlap of the ground states with translationally invariant product states can be exactly calculated and hence the GE can be obtained via further parameter optimization. The QPTs exhibited in these models are detected by the energy gap and singular behavior of geometric entanglement. In particular, the XzY model exhibits transitions from the nontrivial SPT phase to a trivial paramagnetic phase. Moreover, the halfway XY model exhibits a first-order transition across the Barouch-McCoy circle, on which it was only a crossover in the standard XY model.
description: 29 pages, 12 figures
Fermions in the Rindler spacetime
Creators: name: Santos, L. C. N.
name: Barros, C. C.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper we study the Dirac equation in the Rindler spacetime. The solution of the wave equation in an accelerated reference frame is obtained. The differential equation associated to this wave equation is mapped into a Sturm-Liouville problem of a Schrödinger-like equation. We derive a compact expression for the energy spectrum associated with the Dirac equation in an accelerated reference. It is shown that the noninertial effect of the accelerated reference frame mimics an external potential in the Dirac equation and, moreover, allows the formation of bound states.
$L^2$-Betti numbers of totally disconnected groups and their approximation by Betti numbers of lattices
Creators: name: Petersen, Henrik Densing
name: Sauer, Roman
name: Thom, Andreas
Publisher: name: arXiv
Year: 2016
Subjects: subject: Group Theory (math.GR)
subject: Algebraic Topology (math.AT)
subject: Operator Algebras (math.OA)
subject: FOS: Mathematics

description: The main result is a general approximation theorem for normalised Betti numbers for Farber sequences of lattices in totally disconnected groups. Further, we contribute some computations and complements to the general theory of $L^2$-Betti numbers of totally disconnected groups.
description: final version; accepted for publication by the Journal of Topology
Tensor products of n-complete algebras
Creators: name: Pasquali, Andrea
Publisher: name: arXiv
Year: 2017
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: If $A$ and $B$ are $n$- and $m$-representation finite $k$-algebras, then their tensor product $Λ= A\otimes_k B$ is not in general $(n+m)$-representation finite. However, we prove that if $A$ and $B$ are acyclic and satisfy the weaker assumption of $n$- and $m$-completeness, then $Λ$ is $(n+m)$-complete. This mirrors the fact that taking higher Auslander algebra does not preserve $d$-representation finiteness in general, but it does preserve $d$-completeness. As a corollary, we get the necessary condition for $Λ$ to be $(n+m)$-representation finite which was found by Herschend and Iyama by using a certain twisted fractionally Calabi-Yau property.
description: 16 pages. Minor changes following referee report
Electrical Autonomous Brownian Gyrator
Creators: name: Chiang, K. -H.
name: Lee, C. -L.
name: Lai, P. -Y.
name: Chen, Y. -F.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study experimentally and theoretically the steady-state dynamics of a simple stochastic electronic system featuring two resistor-capacitor circuits coupled by a third capacitor. The resistors are subject to thermal noises at real temperatures. The voltage fluctuation across each resistor can be compared to a one-dimensional Brownian motion. However, the collective dynamical behavior, when the resistors are subject to distinct thermal baths, is identical to that of a Brownian gyrator, as first proposed by R. Filliger and P. Reimann in Physical Review Letters 99, 230602 (2007). The average gyrating dynamics is originated from the absence of detailed balance due to unequal thermal baths. We look into the details of this stochastic gyrating dynamics, its dependences on the temperature difference and coupling strength, and the mechanism of heat transfer through this simple electronic circuit. Our work affirms the general principle and the possibility of a Brownian ratchet working near room temperature scale.
description: 8 pages, 4 figures
Ginzburg-Landau equations on Riemann surfaces of higher genus
Creators: name: Chouchkov, D.
name: Ercolani, N. M.
name: Rayan, S.
name: Sigal, I. M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 35Q56, 35Q40, 81Q70, 81V70

description: We study the Ginzburg-Landau equations on Riemann surfaces of arbitrary genus. In particular: - we construct explicitly the (local moduli space of gauge-equivalent) solutions in a neighbourhood of the constant curvature ones; - classify holomorphic structures on line bundles arising as solutions to the equations in terms of the degree, the Abel-Jacobi map, and symmetric products of the surface; - determine the form of the energy and identify when it is below the energy of the constant curvature (normal) solutions.
description: 37 pages
Measurement of the cross-section for producing a $W$ boson in association with a single top quark in $pp$ collisions at $\sqrt{s}={13}$ TeV with ATLAS
Creators: name: ATLAS Collaboration
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The inclusive cross-section for the associated production of a $W$ boson and top quark is measured using data from proton-proton collisions at $\sqrt{s}={13}$ TeV. The dataset corresponds to an integrated luminosity of 3.2 fb$^{-1}$, and was collected in 2015 by the ATLAS detector at the Large Hadron Collider at CERN. Events are selected requiring two opposite sign isolated leptons and at least one jet; they are separated into signal and control regions based on their jet multiplicity and the number of jets that are identified as containing $b$ hadrons. The $Wt$ signal is then separated from the $t\bar{t}$ background using boosted decision tree discriminants in two regions. The cross-section is extracted by fitting templates to the data distributions, and is measured to be $94 \pm 10$ (stat.)$^{+28}_{-22}$ (syst.) $\pm 2$ (lumi.) pb. The measurement is in agreement with the Standard Model prediction of $σ_{\mathrm{theory}} = 71.7 \pm 1.8\,(\mathrm{scale})\,\pm 3.4\,(\mathrm{PDF})\,\mathrm{pb}$.
description: 40 pages in total, author list starting page 24, 7 figures, 4 tables, published in JHEP, All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/TOPQ-2015-16/
Projekti Obzorja Evropa v mediteranskem prostoru  / Horizon Europe Projects: The Mediterranean Dimension
Creators: name: dr. El-Zoheiry, Abdelhamid
Publisher: name: Zenodo
Year: 2023

description: Predstavitev z naslovom Projekti Obzorja Evropa v mediteranskem prostoru iz enodnevnega usposabljanja s področja EU centraliziranih projektov. Predavanje je bilo organizirano pod okriljem ZRS Koper v sklopu projekta KRPAN v sredo, 20. decembra 2023.

A presentation titled Horizon Europe Projects: The Mediterranean Dimension from training in the field of EU centralized projects. The lecture was organized by ZRS Koper in the scope of the project KRPAN on Wednesday, December 20, 2023.

 

Dogodek je bil organiziran v okviru projekta KRPAN - Krepitev Raziskovalne Podpore in Aktivnosti za Napredek na evropskih raziskovalnih projektih, ki ga sofinancirata Republika Slovenija, Ministrstvo za visoko šolstvo, znanost in inovacije ter Evropska unija – NextGenerationEU.

The event is organized within the framework of the project KRPAN - Fostering research support and activities to improve the performance on European research projects, co-financed by the Republic of Slovenia, the Ministry of Higher Education, Science, and Innovation, and the European Union – NextGenerationEU.
Different structures, uniform tradition: the burial landscape in the post-Roman Eastern Desert trade town of Berenike
Creators: name: Gwiazda, Mariusz
name: Iwona, Zych
name: Emilia, Smagur
Publisher: name: Zenodo
Year: 2024
Subjects: Eastern Desert
Belmmyes
burial practices
post-Roman period
Egypt

description: This is a draft of an article awaiting publication.The research was financed by the National Science Centre, Poland [Grant number 2021/43/D/HS3/00248]
Discovery as invention: a constructivist alternative to the classic science documentary
Creators: name: Sternberg, Robert
Publisher: name: University of Westminster
Year: 2010

description: This thesis is a practice-led exploration of how science is represented in the documentary film. The practice part is a science documentary that deliberately eschews a number of key stylistic elements common to what may be called the ‘classic’ science documentary. The aim is not to arbitrarily restrict the filmmaker but rather to explore what sort of a documentary of science might be possible in the absence of certain features that, on the face of it at least, appear to be predicated on an out-dated positivism. The film, Hopeful Monsters: An Experiment, is not in itself an argument for these post-positivist ideas but an experiment that implicitly critiques the philosophical underpinning of the classic science programme. This written dissertation is designed, therefore, to make that critique explicit. It demonstrates, first, how the classic science documentary is indeed informed by an outdated view of the nature of science —the so-called ‘received view’—and second, it develops an alternative, ‘constructivist’ view of science in light of which the film, Hopeful Monsters is evaluated. The dissertation concludes that in its combination of documentary modes and its inconclusive narrative structure, Hopeful Monsters, succeeds in representing science and the scientific-self as distinctly different from the representation of science in the classic science documentary. Furthermore, this alternative representation is indeed consonant with a post-positivist, ‘constructivist’ view of the nature of scientific practice and of the experience of the scientist in carrying out his or her work.
Entendiendo el funcionamiento energético de la ciudad con imágenes satélite
Creators: name: Ramírez-Juidías, Emilio
name: Emilio José, Cabello Franco
Publisher: name: Zenodo
Year: 2024

description: Presentación correspondiente a la primera sesión del Proyecto Alumno Investigador.

Presentation corresponding to the first session of the Student Researcher Project.
ASSESSING VOLATILITY IN SOUTHERN AFRICAN DEVELOPMENT COMMUNITY STOCK MARKETS: IMPLICATIONS OF GLOBAL ECONOMIC POLICY UNCERTAINTY AND OIL SHOCKS USING A GARCH-MIDAS FRAMEWORK
Creators: name: Hervé, Drama Bédi
Publisher: name: SADI journals
Year: 2024
Subjects: Global economic policy uncertainty
oil consumption demand shock
generalized autoregressive conditional heteroskedasticity (GARCH-MIDAS),
Southern African Development Community (SADC) countries
stock market volatility

description: This study investigates the effects of global economic policy uncertainty and oil shocks on stock market volatility in Botswana, Mauritius, and South Africa. Datasets from periods preceding and during the COVID-19 pandemic are utilized to provide evidence on the impact of global economic policy uncertainty (GEPU) and oil shocks on stock returns volatility in these countries. The examination employs a mixed data sampling model based on generalized autoregressive conditional heteroskedasticity (GARCH-MIDAS). The GARCH-MIDAS approach allows for combining high-frequency stock data with low-frequency GEPU and oil shock data to forecast the long-term component of volatility. Additionally, this method demonstrates a better fit for that relationship when compared to traditional GARCH. The results indicate that both GEPU and oil consumption demand shocks have positive and significant impacts on stock volatility for the three countries in our in-sample case (which corresponds to the period before the COVID-19 pandemic). The volatility coefficient estimates for Botswana, Mauritius, and South Africa are 0.076, 0.001 and 0.119, respectively, all significant at the 1% level. This suggests that stock returns in these countries react positively to changes in oil demand shocks. Forecasting data during the COVID-19 period also shows that incorporating global economic policy uncertainty and oil shocks using a GARCH-MIDAS approach improves forecasting accuracy. The application of the GARCH-MIDAS approach in this study facilitates the separation of short-term and long-term volatility components effectively, thus enabling us to address a significant shortfall of previous research that has explored the impact of economic policy uncertainty on stock market returns
Political history of the Serbian media in transition (2000-2006)
Creators: name: Stojanovic, Srdjan
Publisher: name: University of Westminster
Year: 2010

description: This study examines unique features of the media transformation in Serbia 2000-2006. How does reform of the media influence the process of transition from dictatorship to democracy? Do the media have any meaningful impact on tempo and character of change? My initial assumption (hypothesis) was that the media have significant influence and that their impact is considerable. Expectations that a new legal framework alone would automatically produce a democratic environment were wrong. This study demonstrates that the media cannot accelerate the transition process, nor bridge the gap in democratic culture, because the tempo and extent of the media reform is set by the political elite through political culture and institutions. Partially successful transformation of Radio Television Serbia into a public service broadcaster shows that mere introduction of regulatory models from mature democracies into a country without a democratic tradition does not guarantee desired results/outcomes. The role and impact of foreign actors in transformation of the Serbian media was different in comparison with Bosnia and Herzegovina, or Kosovo for example. In Serbia, as a sovereign country, the international actors were present in an advisory role, unlike in aforementioned UN protectorates, but were more actively involved than in other post-communist countries. Abundance of media outlets call for a new citizen - one who is more analytical and capable of putting together scattered pieces of information. Such a new citizen, fundamentally different from the old socialist subject, understands that even "gospel truths" are not absolute, and chooses own way how to engage in political life. There is no one grand theory of transition with prescribed steps and predicted outcomes that can accommodate different country experiences. Such a process is always local - reflecting political, cultural and ethnic features of the country in question. However, it seems certain that the changes in Serbia are irreversible.
Tangle-tree duality: in graphs, matroids and beyond
Creators: name: Diestel, Reinhard
name: Oum, Sang-il
Publisher: name: arXiv
Year: 2017
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C83, 05C40, 05C05

description: We apply a recent duality theorem for tangles in abstract separation systems to derive tangle-type duality theorems for width-parameters in graphs and matroids. We further derive a duality theorem for the existence of clusters in large data sets. Our applications to graphs include new, tangle-type, duality theorems for tree-width, path-width, and tree-decompositions of small adhesion. Conversely, we show that carving width is dual to edge-tangles. For matroids we obtain a duality theorem for tree-width. Our results can be used to derive short proofs of all the classical duality theorems for width parameters in graph minor theory, such as path-width, tree-width, branch-width and rank-width.
description: arXiv admin note: text overlap with arXiv:1406.3797
Positive solutions for perturbations of the Robin eigenvalue problem plus an indefinite potential
Creators: name: Papageorgiou, N. S.
name: Rădulescu, V. D.
name: Repovš, D. D.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35J20, 35J60

description: We study perturbations of the eigenvalue problem for the negative Laplacian plus an indefinite and unbounded potential and Robin boundary condition. First we consider the case of a sublinear perturbation and then of a superlinear perturbation. For the first case we show that for $λ
Permutation-based Causal Inference Algorithms with Interventions
Creators: name: Wang, Yuhao
name: Solus, Liam
name: Yang, Karren Dai
name: Uhler, Caroline
Publisher: name: arXiv
Year: 2017
Subjects: subject: Methodology (stat.ME)
subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: Learning directed acyclic graphs using both observational and interventional data is now a fundamentally important problem due to recent technological developments in genomics that generate such single-cell gene expression data at a very large scale. In order to utilize this data for learning gene regulatory networks, efficient and reliable causal inference algorithms are needed that can make use of both observational and interventional data. In this paper, we present two algorithms of this type and prove that both are consistent under the faithfulness assumption. These algorithms are interventional adaptations of the Greedy SP algorithm and are the first algorithms using both observational and interventional data with consistency guarantees. Moreover, these algorithms have the advantage that they are nonparametric, which makes them useful also for analyzing non-Gaussian data. In this paper, we present these two algorithms and their consistency guarantees, and we analyze their performance on simulated data, protein signaling data, and single-cell gene expression data.
Standards Academy Webinar: Geopolitics of ICT standardisation, 29 January 2024
Creators: name: Giuffrida, Maria
name: Blind, Knut
name: Lee, Heejin
name: Weiler, Dirk
name: Fuchs, Daniel
Publisher: name: Zenodo
Year: 2024

description: The StandICT.eu Academy in cooperation with the Berlin Contemporary China Network organised the webinar Geopolitics of ICT standardisation on 29 January 2024.

During the event, the speakers delved into the intricate world of ICT standardisation and its geopolitical implications, starting with a comprehensive exploration of technological sovereignty and the evolving roles of key global players in shaping the landscape of international standards.

The speakers guided the audience through various facets of ICT standardisation. From the geopolitics surrounding Open Radio Access Network (RAN) to China's changing influence in global standard-setting, this webinar offered a valuable opportunity to gain insights into the power dynamics and cooperation within the realm of international ICT standards.

Agenda

Intro into standardisation and geopolitcs with a focus on technological sovereignty, Knut Blind (Fraunhofer ISI & TU Berlin)

The Geopolitics of ICT standardisation: The Case of Open RAN, Heejin Lee (Graduate School of International Studies, Yonsei University, Republic of Korea)

The power of standardisation, Dirk Weiler (Nokia Head of Standards Policy)

Cooperation and contestation: China's evolving role in international standardisation, Daniel Fuchs (HU Berlin, BCCN)

Moderated by Maria Giuffrida, Trust-IT Services
Active metamaterials with negative static electric susceptibility
Creators: name: Castles, F.
name: Fells, J. A. J.
name: Isakov, D.
name: Morris, S. M.
name: Watt, A.
name: Grant, P. S.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Applied Physics (physics.app-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Well-established textbook arguments suggest that static electric susceptibility must be positive in "all bodies" [1]. However, it has been pointed out that media that are not in thermodynamic equilibrium are not necessarily subject to this restriction; negative static electric susceptibility has been predicted theoretically in systems with inverted populations of atomic and molecular energy levels [2,3], though this has never been confirmed experimentally. Here we exploit the design freedom afforded by metamaterials to fabricate active structures that exhibit the first experimental evidence of negative static electric susceptibility. Unlike the systems envisioned previously---which were expected to require reduced temperature and pressure---negative values are readily achieved at room temperature and pressure. Further, values are readily tuneable throughout the negative range of stability -1
description: 20 pages, 2 figures, additional data and discussion included. Supplementary information available from F. Castles on request
Bloggers and the Blogosphere in Lebanon & Syria: meanings and activities
Creators: name: Taki, Maha
Publisher: name: University of Westminster
Year: 2010

description: The use of blogging and its potential effects on society and politics have been widely debated but the meanings and understandings that bloggers themselves hold about the activity have not been sufficiently explored; indeed in Lebanon and Syria they have barely been investigated at all. Through interviews with bloggers, ISPs, Internet café owners and others, as well as informal online participant observation and an online questionnaire, this thesis explores the structural and cultural variables that have allowed Lebanese and Syrian bloggers to understand and use blogs in their own specific ways. The study not only recounts what bloggers say about themselves but investigates the structural variables that surround them, including government and institutional policy, censorship, impediments to Internet access, historical conditions under which blogging emerged, attitudes to the Internet, changing events and new entrants to blogging. By its comparative nature, the project reveals how the meanings that bloggers attach to their blogging activities and to their socialization with other bloggers are situated in the social and historical conditions under which blogging is practiced. The changing meanings blogging acquired for bloggers during the course of this research illustrated its shifting and relational attributes. Thus an unexpectedly complex array of interrelated factors is shown to contribute to the tool acquiring certain meanings and being used in specific ways. The research uncovers differing reasons between Lebanese and Syrian bloggers as to why they blog, what socialisation with other bloggers means to them, and what marks of differentiation such as anonymity and choice of language they use to distinguish the activity of one blogger from another. Both the Lebanese and Syrian bloggers at this point belong to a collective effort of other bloggers in their own countries, but the thesis also shows the meanings of socialisation online and how it is regarded change over time.
Clinical Evaluation of Telehealth Technologies: Methods and Hardware
Creators: name: Schmidt, Christian Thorge
Publisher: name: Zenodo
Year: 2024

description: In this comprehensive article, we delve into the evolution and current state of telehealth technologies, focusing on their adoption and clinicalassessment within hospitals and healthcare providers across the European Union and North America. This research encompasses a broadspectrum of telehealth applications, ranging from remote patient monitoring systems to virtual consultation platforms. By systematicallyreviewing both historical and contemporary undertakings in these regions, the article provides a detailed overview of the telehealth landscape,highlighting the technologies that have been integrated into healthcare practices. Emphasis is placed on the outcome of independent tests andevaluations, offering an objective perspective that transcends promotional narratives often encountered in the industry. This approach ensuresa clear, evidence-based understanding of the efficacy and practicality of various telehealth solutions.Furthermore, the article critically examines the real-world feasibility and usability of these telehealth technologies, shedding light on the factorsthat influence their adoption among healthcare professionals and patients. It navigates through the complexities of technological innovationsin healthcare, distinguishing between what is theoretically promising and what has been practically embraced in clinical environments.Special attention is given to the economic aspects of telehealth, analyzing customer willingness to pay and the cost-effectiveness of differenttechnologies. This aspect of the study provides valuable insights for healthcare providers, policymakers, and technology developers, guidingthem towards telehealth solutions that are not only clinically effective but also economically viable and aligned with the needs and preferencesof end-users.
ProjectQ: An Open Source Software Framework for Quantum Computing
Creators: name: Steiger, Damian S.
name: Häner, Thomas
name: Troyer, Matthias
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: Emerging Technologies (cs.ET)
subject: Programming Languages (cs.PL)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We introduce ProjectQ, an open source software effort for quantum computing. The first release features a compiler framework capable of targeting various types of hardware, a high-performance simulator with emulation capabilities, and compiler plug-ins for circuit drawing and resource estimation. We introduce our Python-embedded domain-specific language, present the features, and provide example implementations for quantum algorithms. The framework allows testing of quantum algorithms through simulation and enables running them on actual quantum hardware using a back-end connecting to the IBM Quantum Experience cloud service. Through extension mechanisms, users can provide back-ends to further quantum hardware, and scientists working on quantum compilation can provide plug-ins for additional compilation, optimization, gate synthesis, and layout strategies.
description: Version accepted by Quantum
Grid application meta-repository system
Creators: name: Tudose, Alexandru
Publisher: name: University of Westminster
Year: 2010

description: As one of the most popular forms of distributed computing technology, Grid brings together different scientific communities that are able to deploy, access, and run complex applications with the help of the enormous computational and storage power offered by the Grid infrastructure. However as the number of Grid applications has been growing steadily in recent years, they are now stored on a multitude of different repositories, which remain specific to each Grid. At the time this research was carried out there were no two well-known Grid application repositories sharing the same structure, same implementation, same access technology and methods, same communication protocols, same security system or same application description language used for application descriptions. This remained a great limitation for Grid users, who were bound to work on only one specific repository, and also presented a significant limitation in terms of interoperability and inter-repository access. The research presented in this thesis provides a solution to this problem, as well as to several other related issues that have been identified while investigating these areas of Grid. Following a comprehensive review of existing Grid repository capabilities, I defined the main challenges that need to be addressed in order to make Grid repositories more versatile and I proposed a solution that addresses these challenges. To this end, I designed a new Grid repository (GAMRS – Grid Application Meta-Repository System), which includes a novel model and architecture, an improved application description language and a matchmaking system. After implementing and testing this solution, I have proved that GAMRS marks an improvement in Grid repository systems. Its new features allow for the inter-connection of different Grid repositories; make applications stored on these repositories visible on the web; allow for the discovery of similar or identical applications stored in different Grid repositories; permit the exchange and re-usage of application and application related objects between different repositories; and extend the use of applications stored on Grid repositories to other distributed environments, such as virtualized cluster-on-demand and cloud computing.
Planets in Mean-Motion Resonances and the System Around HD45364
Creators: name: Correia, Alexandre C. M.
name: Delisle, Jean-Baptiste
name: Laskar, Jacques
Publisher: name: arXiv
Year: 2017
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Dynamical Systems (math.DS)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: In some planetary systems, the orbital periods of two of its members present a commensurability, usually known by mean-motion resonance. These resonances greatly enhance the mutual gravitational influence of the planets. As a consequence, these systems present uncommon behaviors, and their motions need to be studied with specific methods. Some features are unique and allow us a better understanding and characterization of these systems. Moreover, mean-motion resonances are a result of an early migration of the orbits in an accretion disk, so it is possible to derive constraints on their formation. Here we review the dynamics of a pair of resonant planets and explain how their orbits evolve in time. We apply our results to the HD 45365 planetary system.
description: invited review, 17 pages, 6 figures
EXPLORING FACTORS INFLUENCING URBAN POVERTY: A STUDY OF GOBA TOWN, BALE ZONE, OROMIA, ETHIOPIA
Creators: name: Kerorsa, Mulatu Gemechu
name: Woldeyes, Mekonnen Wondesen
Publisher: name: ZAP journals
Year: 2024
Subjects: Urban poverty
asset value
access to credit
saving
family size
Goba
Ethiopia

description: This study aims to assess the primary causes of urban poverty in Goba City, located in the Bale Zone of the Oromia Region in Ethiopia. Data were collected from a representative sample of 384 households selected from specific kebeles in the study area using a combination of multistage and systematic sampling methods. The analysis of the data employed both descriptive statistics and a logit regression model. The binary logit regression model's econometric results showed that sex of the household head, education, access to credit, saving and asset value were found to be negative and statistically significant determinants of households' poverty. However, family size in adult equivalent and health status were found to have positive and statistically significant effects on poverty. Therefore, to effectively combat urban poverty, policy efforts should focus on gender empowerments, promoting education, promoting family planning, offering trainings, and facilitating access to credit services to start a business are some of the essential policy interventions.
Fairness of Italian Cultural Heritage - AIUCD 2023
Creators: name: Aiola, Chiara
name: Fabbris, Giulia
Publisher: name: Zenodo
Year: 2023
Subjects: digital cultural heritage
FAIR principles
reuse of metadata
interoperability
PND

description: This web app retrieves existing resources belonging to the Italian cultural heritage available on online repositories, reusing and integrating their data and metadata according to the FAIR principles. The aggregated objects can be further visualized and annotated thanks to the provided tools.
A note on the possibility of incomplete theory
Creators: name: Geurdes, Han
name: Nagata, Koji
name: Nakamura, Tadao
name: Farouk, Ahmed
Publisher: name: arXiv
Year: 2017
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: In the paper it is demonstrated that Bells theorem is an unprovable theorem.
description: 22 pages, 1 figures
The role of T-helper/T-suppressor ratio in the adaptive immune response: a dynamical model
Creators: name: Annibale, Alessia
name: Dziobek-Garrett, Louise A
name: Tari, Haider
Publisher: name: arXiv
Year: 2017
Subjects: subject: Cell Behavior (q-bio.CB)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Recent experimental studies have suggested the ratio between T-helper and T-suppressor lymphocytes as an index of immunosuppression in HIV, cancer, immunosenescence and inflammatory and auto-immune diseases. However, a quantitative understanding of the impact of this ratio on the immune response has lagged behind data and its validity as a tool for prognostic monitoring or therapeutic target remains an open question. In this work, we use statistical physics and dynamical systems approaches to analyze the time-dependent response to an antigen, of a simplified model of the adaptive immune system, which comprises B, T-helper and T-suppressor lymphocytes. The model is remarkably robust against changes in the noise level and kinetic parameters, but it is very sensitive to changes in the ratio between T-helper and T-suppressor lymphocytes, exhibiting, in particular, a transition from a responsive to an immuno-suppressed phase, as the ratio is lowered below a critical value, which is in line with experiments. This result supports the validity of the T-helper/T-suppressor ratio as an index of immunosuppression and may provide a useful theoretical benchmark to interpret and compare experiments.
description: 22 pages, 11 figures
Scanning Thermo-ionic Microscopy: Probing Nanoscale Electrochemistry via Thermal Stress-induced Oscillation
Creators: name: Esfahani, Ehsan Nasr
name: Eshghinejad, Ahmad
name: Ou, Yun
name: Zhao, Jinjin
name: Adler, Stuart
name: Li, Jiangyu
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A universal challenge facing the development of electrochemical materials is our lack of understanding of physical and chemical processes at local length scales in 10-100 nm regime, and acquiring this understanding requires a new generation of imaging techniques. In this article, we introduce the scanning thermo-ionic microscopy (STIM) for probing local electrochemistry at the nanoscale, using for imaging the Vegard strain induced via thermal stress excitations. Since ionic oscillation is driven by the stress instead of voltage, the responses are insensitive to the electromechanical, electrostatic, and capacitive effects, and they are immune to global current perturbation, making in-operando testing possible.
description: 9 Figures
Observation of Slow Dynamics near the Many-Body Localization Transition in One-Dimensional Quasiperiodic Systems
Creators: name: Lüschen, Henrik P.
name: Bordia, Pranjal
name: Scherg, Sebastian
name: Alet, Fabien
name: Altman, Ehud
name: Schneider, Ulrich
name: Bloch, Immanuel
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In the presence of sufficiently strong disorder or quasiperiodic fields, an interacting many-body system can fail to thermalize and become many-body localized. The associated transition is of particular interest, since it occurs not only in the ground state but over an extended range of energy densities. So far, theoretical studies of the transition have focused mainly on the case of true-random disorder. In this work, we experimentally and numerically investigate the regime close to the many-body localization transition in quasiperiodic systems. We find slow relaxation of the density imbalance close to the transition, strikingly similar to the behavior near the transition in true-random systems. This dynamics is found to continuously slow down upon approaching the transition and allows for an estimate of the transition point. We discuss possible microscopic origins of these slow dynamics.