cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
CLARIN Café "A new CLARIN Resource Family for Lexical Semantic Change research"
Creators: name: Marongiu, Paola
name: Khan, Fahad
name: McGillivray, Barbara
Publisher: name: Zenodo
Year: 2023
Subjects: lexical semantic change

description: This repository contains the slides and the tutorial document for the CLARIN Café "A new CLARIN Resource Family for Lexical Semantic Change research" (5 July 2023). This work was funded by CLARIN-ERIC through the CLARIN Resource Families project. The project is called “A new CLARIN Resource Family for lexical semantic change research” and it was funded for the period from 1/11/2022 to 30/06/2023. Proposing team: Barbara McGillivray (King’s College London) and Fahad Khan (ILC-CNR).
 Research assistant: Paola Marongiu (University of Neuchâtel).
Applications of amenable semigroups in operator theory
Creators: name: Niemiec, Piotr
name: Wójcik, Paweł
Publisher: name: arXiv
Year: 2017
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: Primary 47D03, Secondary 43A07, 47B40, 47A15, 47H10, 46B28

description: The paper deals with continuous homomorphisms $S \ni s \mapsto T_s \in L(E)$ of amenable semigroups $S$ into the algebra $L(E)$ of all bounded linear operators on a Banach space $E$. For a closed linear subspace $F$ of $E$, sufficient conditions are given under which there exists a projection $P \in L(E)$ onto $F$ that commutes with all $T_s$. And when $E$ is a Hilbert space, sufficient conditions are given for the existence of an invertible operator $R \in L(E)$ such that all $R T_s R^{-1}$ are isometries. Also certain results on extending intertwining operators, renorming as well as on operators on hereditarily indecomposable Banach spaces are offered.
description: 16 pages
[Carta Aberta à Humanidade] A Espiral Periodica - uma Restruturação da Tabela Periodica (2022)
Creators: name: Teia, Luis
Publisher: name: figshare
Year: 2022
Subjects: classificationCode: 340199
subject: Analytical chemistry not elsewhere classified
classificationCode: 340699
subject: Physical chemistry not elsewhere classified
classificationCode: 340799
subject: Theoretical and computational chemistry not elsewhere classified

description: A presente carta aberta apresenta uma nova maneira de organizar os elementos da tabela periodica numa disposição espacial em três dimensões, com o objectivo de reconciliar algumas disparidades do modelo clássico.-------------------------------------------------------------------------For more public data, please visit my Figshare profile: https://figshare.com/authors/Luis_Teia/10811244
Influence of noise in entanglement-based quantum networks
Creators: name: Mor-Ruiz, Maria Flors
name: Dür, Wolfgang
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider entanglement-based quantum networks, where multipartite entangled resource states are distributed and stored among the nodes and locally manipulated upon request to establish the desired target configuration. Separating the generation process from the requests enables a pre-preparation of resources, hence a reduced network latency. It also allows for an optimization of the entanglement topology, which is independent of the underlying network geometry. We concentrate on establishing Bell pairs or tripartite GHZ states between arbitrary parties. We study the influence of noise in this process, where we consider imperfections in state preparation, memories, and measurements - all of which can be modeled by local depolarizing noise. We compare different resource states corresponding to linear chains, trees, or multi-dimensional rectangular clusters, as well as centralized topologies using bipartite or tripartite entangled states. We compute the fidelity of the target states using a recently established efficient method, the noisy stabilizer formalism, and identify the best resource states within these classes. This allows us to treat networks of large size containing millions of nodes. We find that in large networks, high-dimensional cluster states are favorable and lead to a significantly higher target state fidelity.
description: 15 pages, 5 figures
Formative Fugues: Reconceptualizing Formative Feedback for Complex Systems Learning Environments
Creators: name: Mallavarapu, Aditi
name: Uzzo, Stephen
name: Lyons, Leilah
Publisher: name: International Journal of Complexity in Education
Year: 2023

description: The Next Generation Science Standards and the National Research Council recognize systems thinking as an essential skill to address the global challenges of the 21st century. But the habits of mind needed to understand complex systems are not readily learned through traditional approaches. Recently large-scale interactive multi-user immersive simulations are being used to expose the learners to diverse topics that emulate real-world complex systems phenomena. These modern-day mixed reality simulations are unique in that the learners are an integral part of the evolving dynamics. The decisions they make and the actions that follow, collectively impact the simulated complex system, much like any real-world complex system. But the learners have difficulty understanding these coupled complex systems processes, and often get “lost” or “stuck,” and need help navigating the problem space. Formative feedback is the traditional way educators support learners during problem solving. Traditional goal-based and learner-centered approaches don’t scale well to environments that allow learners to explore multiple goals or solutions, and multiple solution paths (Mallavarapu Lyons, 2020). In this work, we reconceptualize formative feedback for complex systems-based learning environments, formative fugues, (a term derived from music by Reitman, 1964) to allow learners to make informed decisions about their own exploration paths. We discuss a novel computational approach that employs causal inference and pattern matching to characterize the exploration paths of prior learners and generate situationally relevant formative feedback. We extract formative fugues from the data collected from an ecological complex systems simulation installed at a museum. The extracted feedback does not presume the goals of the learners, but helps the learners understand what choices and events led to the current state of the problem space, and what paths forward are possible. We conclude with a discussion of implications of using formative fugues for complex systems education. Keywords: complex systems education, computational formative feedback, interactive digital exhibits, participatory exhibits, causal modelling complex systems.
description: International Journal of Complexity in Education, Vol 2, No 2 (2021)
Coarse graining the phase space of $N$ qubits
Creators: name: Di Matteo, Olivia
name: Sanchez-Soto, Luis L.
name: Leuchs, Gerd
name: Grassl, Markus
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We develop a systematic coarse graining procedure for systems of $N$ qubits. We exploit the underlying geometrical structures of the associated discrete phase space to produce a coarse-grained version with reduced effective size. Our coarse-grained spaces inherit key properties of the original ones. In particular, our procedure naturally yields a subset of the original measurement operators, which can be used to construct a coarse discrete Wigner function. These operators also constitute a systematic choice of incomplete measurements for the tomographer wishing to probe an intractably large system.
description: 8 pages, 5 figures. To appear in Phys. Rev. A. Comments welcome!
Dirac equation of spin particles and tunneling radiation from a Kinnersly black
Creators: name: Li, Guo-Ping
name: Feng, Zhong-Wen
name: Li, Hui-Ling
name: Zu, Xiao-Tao
Publisher: name: arXiv
Year: 2017
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In curved space-time, Hamilton-Jacobi equation is a semi-classical particle's motion equation, which plays an important role in the research of black hole physics. In this paper, starting from Dirac equation describing the spin 1/2 fermion and Rarita-Schwinger equation describing the spin 3/2 fermion respectively, we derive a Hamilton-Jacobi equation of the non-stationary spherically symmetric gravitational field background. Furthermore, the quantum tunneling behavior of a charged spherically symmetric black hole is investigated by using this Hamilton-Jacobi equation. The result shows that the Hamilton-Jacobi equation is helpful for people to understand the thermodynamic properties and the radiation characteristics of a black hole.
description: 7 pages
Self-similar evolution of wave turbulence in Gross-Pitaevskii system
Creators: name: Zhu, Ying
name: Semisalov, Boris
name: Krstulovic, Giorgio
name: Nazarenko, Sergey
Publisher: name: arXiv
Year: 2023
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Chaotic Dynamics (nlin.CD)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We study the universal non-stationary evolution of wave turbulence (WT) in Bose-Einstein condensates (BECs). Their temporal evolution can exhibit different kinds of self-similar behavior corresponding to a large-time asymptotic of the system or to a finite-time blowup. We identify self-similar regimes in BECs by numerically simulating the forced and unforced Gross-Pitaevskii equation (GPE) and the associated wave kinetic equation (WKE) for the direct and inverse cascades, respectively. In both the GPE and the WKE simulations for the direct cascade, we observe the first-kind self-similarity that is fully determined by energy conservation. For the inverse cascade evolution, we verify the existence of a self-similar evolution of the second kind describing self-accelerating dynamics of the spectrum leading to blowup at the zero mode (condensate) at a finite time. We believe that the universal self-similar spectra found in the present paper are as important and relevant for understanding the BEC turbulence in past and future experiments as the commonly studied stationary Kolmogorov-Zakharov (KZ) spectra.
Advisory Board Decision Making as Collective Identity Exploration
Creators: name: Garner, Joanna K.
name: Hathcock, Stephanie
name: Vasinda, Sheri Vasinda
name: Brienen, Rebecca Brienen
Publisher: name: International Journal of Complexity in Education
Year: 2023

description: Whereas models of consensus decision making emphasize a linear multi-phase process, situated perspectives highlight the dynamic relations between individuals, contexts, and identities. We examine the role of identity components and processes to understand consensus decision making in a community advisory board. By viewing the process as one of collective identity exploration that embodies principles of complex dynamic systems, we explore how a focal dilemma of generating a theme for a community Science, Technology, Engineering, Art, and Mathematics (STEAM) challenge elicited iterative cycles of identity discovery, prioritization, and negotiation. While exploring the identity of the group and the community at-large, board members’ deliberations included incremental and transformational dialogue that led to the spontaneous, abrupt emergence of a final decision. The study connects situated perspectives on identity with principles of complex systems and finds that the social context acts as a control parameter to shape the salience and alignment of various identity components. Keywords: complex systems, advisory boards, decision making, identity, STEM education.
description: International Journal of Complexity in Education, Vol 2, No 2 (2021)
Self-similar finite-time blowups with smooth profiles of the generalized Constantin-Lax-Majda model
Creators: name: Huang, De
name: Qin, Xiang
name: Wang, Xiuyuan
name: Wei, Dongyi
Publisher: name: arXiv
Year: 2023
Subjects: subject: Analysis of PDEs (math.AP)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 35A21, 35Q31, 35C06, 34A34, 47H10

description: We show that the $a$-parameterized family of the generalized Constantin-Lax-Majda model, also known as the Okamoto-Sakajo-Wunsch model, admits exact self-similar finite-time blowup solutions with interiorly smooth profiles for all $a\leq 1$. Depending on the value of $a$, these self-similar profiles are either smooth on the whole real line or compactly supported and smooth in the interior of their closed supports. The existence of these profiles is proved in a consistent way by considering the fixed-point problem of an $a$-dependent nonlinear map, based on which detailed characterizations of their regularity, monotonicity, and far-field decay rates are established. Our work unifies existing results for some discrete values of $a$ and also explains previous numerical observations for a wide range of $a$.
description: 48 pages, 10 figures
[ARTICLE] Universal Gear and the Pythagorean Theorem (Australian Mathematics Education Journal AMEJ / 2019)
Creators: name: Teia, Luis
Publisher: name: figshare
Year: 2022
Subjects: classificationCode: 490499
subject: Pure mathematics not elsewhere classified
classificationCode: 499999
subject: Other mathematical sciences not elsewhere classified

description: A leap in knowledge often is accompanied by a necessary leap in the human thought process. This was true at the time when the Babylonians learnt Pythagoras’ Theorem, and it is true now. The present leap in knowledge challenges one’s ability for three-dimensional visualization. It insights the Pythagorean Theorem as being part of a larger three-dimensional concept, here named the Universal Gear. In a nutshell, the Universal Gear comprises of infinite interlaced Pythagorean Theorems embedded in planes along all three orthogonal directions that are constantly connected and in perfect balance. In so doing, this concept governs information exchange in one- (lines), two- (areas) and three-dimensions (volumes) throughout the grid. From this enhanced perspective, the Universal Gear is bigger than the Pythagorean Theorem in that not only it satisfies the later individually — by interrelating the area of three squares via an intermediate triangle — but it also establishes a volumetric equivalent (to the Pythagorean Theorem) by relating two cubes to a half truncated octahedron via a truncated tetrahedron,and vice versa, which is different from saying that the volumetric sum of two cubes (both geometric integers) relates to a third (also a geometric integer) — see Fermat's Last Theorem. Noting that all in all, it is the Pythagorean Theorem that governs this three-dimensional structure. Thus, the Universal Gear establishes that the truncated tetrahedron is the three-dimensional equivalent to the right-triangle — a truncated tetrahedron is indeed formed by three orthogonally alignment right-triangles — and that the diagonal of the cube, that is an hexagon, is the three-dimensional equivalent to the diagonal of a square (the hypotenuse of a triangle). Ultimately, the Universal Gear is governed by the Pythagorean Theorem’s dynamics expressed synchronously in a three-dimensional network. Like reality, the Universal Gear presents a fractal nature in that its structure repeats itself infinitely both inwardly and outwardly. One of its practical applications has been identified in the study of fluids, more particularly in computation fluid dynamics.
The AAMT journal copyright statement allows online sharing as follows: " The authors may publish a copy of the work online on their institutional website or repository, or on third-party research repositories such as Research Gate. " (see link below for further details)-------------------------------------------------------------------------For more public data, please visit my Figshare profile: https://figshare.com/authors/Luis_Teia/10811244
Extending fields in a level set method by solving a biharmonic equation
Creators: name: Moroney, Timothy J.
name: Lusmore, Dylan R.
name: McCue, Scott W.
name: McElwain, D. L. Sean
Publisher: name: arXiv
Year: 2017
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: We present an approach for computing extensions of velocities or other fields in level set methods by solving a biharmonic equation. The approach differs from other commonly used approaches to velocity extension because it deals with the interface fully implicitly through the level set function. No explicit properties of the interface, such as its location or the velocity on the interface, are required in computing the extension. These features lead to a particularly simple implementation using either a sparse direct solver or a matrix-free conjugate gradient solver. Furthermore, we propose a fast Poisson preconditioner that can be used to accelerate the convergence of the latter. We demonstrate the biharmonic extension on a number of test problems that serve to illustrate its effectiveness at producing smooth and accurate extensions near interfaces. A further feature of the method is the natural way in which it deals with symmetry and periodicity, ensuring through its construction that the extension field also respects these symmetries.
description: Accepted by Journal of Computational Physics
[ARTICLE] Universal Gear and the Pythagorean Theorem (Australian Mathematics Education Journal / 2019)
Creators: name: Teia, Luis
Publisher: name: figshare
Year: 2022
Subjects: classificationCode: 490499
subject: Pure mathematics not elsewhere classified
classificationCode: 499999
subject: Other mathematical sciences not elsewhere classified

description: A leap in knowledge often is accompanied by a necessary leap in the human thought process. This was true at the time when the Babylonians learnt Pythagoras’ Theorem, and it is true now. The present leap in knowledge challenges one’s ability for three-dimensional visualization. It insights the Pythagorean Theorem as being part of a larger three-dimensional concept, here named the Universal Gear. In a nutshell, the Universal Gear comprises of infinite interlaced Pythagorean Theorems embedded in planes along all three orthogonal directions that are constantly connected and in perfect balance. In so doing, this concept governs information exchange in one- (lines), two- (areas) and three-dimensions (volumes) throughout the grid. From this enhanced perspective, the Universal Gear is bigger than the Pythagorean Theorem in that not only it satisfies the later individually—by interrelating the area of three squares via an intermediate triangle—but it also establishes a volumetric equivalent (to the Pythagorean Theorem) by relating two cubes to a half truncated octahedron via a truncated tetrahedron,and vice versa, which is different from saying that the volumetric sum of two cubes relate to a third. Noting that all in all, it is the Pythagorean Theorem that governs this three-dimensional structure. Thus, the Universal Gear establishes that the truncated tetrahedron is the three-dimensional equivalent to the right-triangle—and a truncated tetrahedron is indeed formed by three orthogonally alignment right-triangles—and that the diagonal of the cube, that is the hexagon, is the three-dimensional equivalent to the diagonal of a square (the hypotenuse of a triangle). Ultimately, the Universal Gear is governed by the Pythagorean Theorem’s dynamics expressed synchronously in a three-dimensional network. Like reality, the Universal Gear presents a fractal nature in that its structure repeats itself infinitely both inwardly and outwardly. One of its practical applications has been identified in the study of fluids, and more particularly in computation fluid dynamics.
 The AAMT journal copyright statement allows online sharing as follows: " The authors may publish a copy of the work online on their institutional website or repository, or on third-party research repositories such as Research Gate. " (see link below for further details)
On relation between discrete Frenet frames and the bi-Hamiltonian structure of the discrete nonlinear Schrödinger equation
Creators: name: Ioannidou, Theodora
name: Niemi, Antti
Publisher: name: arXiv
Year: 2017
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: The discrete Frenet equation entails a local framing of a discrete, piecewise linear polygonal chain in terms of its bond and torsion angles. In particular, the tangent vector of a segment is akin the classical O(3) spin variable. Thus there is a relation to the lattice Heisenberg model, that can be used to model physical properties of the chain. On the other hand, the Heisenberg model is closely related to the discrete nonlinear Schrödinger (DNLS) equation. Here we apply these interrelations to develop a perspective on discrete chains dynamics: We employ the properties of a discrete chain in terms of a spinorial representation of the discrete Frenet equation, to introduce a bi-hamiltonian structure for the discrete nonlinear Schrödinger equation (DNLSE), which we then use to produce integrable chain dynamics.
description: 10 pages, 1 figure
CALTeL as an Object Theory of the Complexity Theory Domain on Language Teacher Development
Creators: name: Ferreira Do Vale Borges, Elaine
Publisher: name: International Journal of Complexity in Education
Year: 2023

description: In this paper, I aim to present the Complex Approach to Language Teaching and Learning (CALTeL) potentially as an object theory related to the pre-service language teacher development in the complexity theory domain, and within the scope of the Foreign/ Second Language Teaching area in Applied Linguistics. The discussion is essentially grounded in theoretical and philosophical reflections about object theory, metatheory, metaparadigms, sociological paradigms, complex adaptive systems, complex language teachers, language teachers ́ professionality, approaches and methods to language teaching and learning, and it is related to works such as Meinong (1960), Anthony (1963), Kuhn (1970), Hoyle (1975), Masterman (1979), Overton (2007), Evans (2008), Larsen-Freeman Cameron (2008), Borges Paiva (2011, 2014), Richards Rogers (2014), Borges (2015), Larsen-Freeman (2015, 2017), Bates (2016), Borges Silva (2019) among others. An overview of the CALTeL and its twelve elements is presented, followed by a brief discussion about studies that have already shown evidence of the emergence of some of these elements in language teacher development. Lastly, I emphasize a few themes about the CALTeL ́s elements that still require empirical research. Keywords: object theory, metatheory, complexity theory, complex adaptive system, approach to language teaching and learning,
description: International Journal of Complexity in Education, Vol 2, No 2 (2021)
Signifying the Schrodinger cat in the context of testing macroscopic realism
Creators: name: Reid, M D
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Macroscopic realism (MR) specifies that where a system can be found in one of two macroscopically distinguishable states (a cat being dead or alive), the system is always predetermined to be in one or other of the two states (prior to measurement). Proposals to test MR generally introduce a second premise to further qualify the meaning of MR. This paper examines two such models, the first where the second premise is that the macroscopically distinguishable states are quantum states (MQS) and the second where the macroscopcially distinguishable states are localised hidden variable states (LMHVS). We point out that in each case in order to negate the model, it is necessary to assume that the predetermined states give microscopic detail for predictions of measurements. Thus, it is argued that many cat-signatures do not negate MR but could be explained by microscopic effects such as a photon-pair nonlocality. Finally, we consider a third model, macroscopic local realism (MLR), where the second premise is that measurements at one location cannot cause an instantaneous macroscopic change to the system at another. By considering amplification of the quantum noise level via a measurement process, we discuss how negation of MLR may be possible.
description: 11 pages 7 Figures
Value of Information: Sensitivity Analysis and Research Design in Bayesian Evidence Synthesis
Creators: name: Jackson, Christopher
name: Presanis, Anne
name: Conti, Stefano
name: De Angelis, Daniela
Publisher: name: arXiv
Year: 2017
Subjects: subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: Suppose we have a Bayesian model which combines evidence from several different sources. We want to know which model parameters most affect the estimate or decision from the model, or which of the parameter uncertainties drive the decision uncertainty. Furthermore we want to prioritise what further data should be collected. These questions can be addressed by Value of Information (VoI) analysis, in which we estimate expected reductions in loss from learning specific parameters or collecting data of a given design. We describe the theory and practice of VoI for Bayesian evidence synthesis, using and extending ideas from health economics, computer modelling and Bayesian design. The methods are general to a range of decision problems including point estimation and choices between discrete actions. We apply them to a model for estimating prevalence of HIV infection, combining indirect information from several surveys, registers and expert beliefs. This analysis shows which parameters contribute most of the uncertainty about each prevalence estimate, and provides the expected improvements in precision from collecting specific amounts of additional data.
[ARTICLE] Special Case of the Three-dimensional Pythagorean Gear (Australian Senior Mathematics Journal / 2018)
Creators: name: Teia, Luis
Publisher: name: figshare
Year: 2022
Subjects: classificationCode: 490499
subject: Pure mathematics not elsewhere classified
classificationCode: 499999
subject: Other mathematical sciences not elsewhere classified

description: In mathematics, three integer numbers or triples have been shown to govern a specific geometrical balance between triangles and squares. The first to study triples were probably the Babylonians, followed by Pythagoras some 1500 years later (Friberg, 1981). This geometrical balance relates parent triples to child triples via the central square method (Teia, 2015). The great family of triples forms a tree ― the Pythagorean tree ― that grows its branches from a fundamental seed (3, 4, 5) making use of one single very specific motion. The diversity of its branches rises from different starting points (i.e., triples) along the tree (Teia, 2016). All this organic geometric growth sprouts from the dynamics of the Pythagorean geometric gear (Figure 1). This gear interrelates geometrically two fundamental alterations in the Pythagorean theorem back to its originas ― the fundamental process of summation x+y=z (Teia, 2018). But reality has a three dimensional nature to it, and hence the next important question is: what does the Pythagorean gear look like in three dimensions?
The AAMT journal copyright statement allows online sharing as follows: " The authors may publish a copy of the work online on their institutional website or repository, or on third-party research repositories such as Research Gate. " (see link below for further details)-------------------------------------------------------------------------For more public data, please visit my Figshare profile: https://figshare.com/authors/Luis_Teia/10811244
Towards Solving Cocktail-Party: The First Method to Build a Realistic Dataset with Ground Truths for Speech Separation
Creators: name: Melhem, Rawad
name: Jafar, Assef
name: Dakkak, Oumayma Al
Publisher: name: arXiv
Year: 2023
Subjects: subject: Sound (cs.SD)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Speech separation is very important in real-world applications such as human-machine interaction, hearing aids devices, and automatic meeting transcription. In recent years, a significant improvement occurred towards the solution based on deep learning. In fact, much attention has been drawn to supervised learning methods using synthetic mixtures datasets despite their being not representative of real-world mixtures. The difficulty in building a realistic dataset led researchers to use unsupervised learning methods, because of their ability to handle realistic mixtures directly. The results of unsupervised learning methods are still unconvincing. In this paper, a method is introduced to create a realistic dataset with ground truth sources for speech separation. The main challenge in designing a realistic dataset is the unavailability of ground truths for speakers signals. To address this, we propose a method for simultaneously recording two speakers and obtaining the ground truth for each. We present a methodology for benchmarking our realistic dataset using a deep learning model based on Bidirectional Gated Recurrent Units (BGRU) and clustering algorithm. The experiments show that our proposed dataset improved SI-SDR (Scale Invariant Signal to Distortion Ratio) by 1.65 dB and PESQ (Perceptual Evaluation of Speech Quality) by approximately 0.5. We also evaluated the effectiveness of our method at different distances between the microphone and the speakers and found that it improved the stability of the learned model.
An analytic expression for coronagraphic imaging through turbulence. Application to on-sky coronagraphic phase diversity
Creators: name: Herscovici-Schiller, Olivier
name: Mugnier, Laurent M.
name: Sauvage, Jean-François
Publisher: name: arXiv
Year: 2017
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The ultimate performance of coronagraphic high contrast exoplanet imaging systems such as SPHERE or GPI is limited by quasi-static aberrations. These aberrations produce speckles that can be mistaken for planets in the image. In order to design instruments, correct quasi-static aberrations or analyse data, the expression of the point spread function of a coronagraphic instrument in the presence of residual turbulence is most useful. Here we derive an analytic expression for this point spread function that is an extension to coronagraphic imaging of Roddier's expression for imaging through turbulence. We give a physical interpretation of its structure, we validate it by numerical simulations and we show that it is computationally efficient. Finally, we incorporate this imaging model into a coronagraphic phase diversity method (COFFEE) and validate by simulations that it allows wave-front reconstruction in the presence of residual turbulence. The preliminary results, which give a sub-nanometric precision in the case of a SPHERE-like system, strongly suggest that quasi-static aberrations could be calibrated during observations by this method.
description: This is a pre-copyedited, author-produced PDF of an article accepted for publication in the monthly notices of the royal astronomical society following peer review, MNRAS 2017 slx009
Presentation: Increasing Repurchase Intention of Generation Z's Daily Needs through Marketplaces on the Online Market of Indonesia
Creators: name: Suryono, Ignatius Agus
name: Leonardo, Michael Agusto
name: Aryono Yacobus
name: Oetomo, Hadi
Publisher: name: Zenodo
Year: 2022

description: This material has presented on 1st International Conference on Advance Research in Social and Economic Science. October 25, 2022
Complex Dynamic Systems and Language Education: A Sampling of Current Research – Editorial
Creators: name: Hiver, Phil
name: Freeman, Diane Larsen
name: Al-Hoorie, Ali H.
name: Lowie, Wander
Publisher: name: International Journal of Complexity in Education
Year: 2023

description: It has been twenty-five years since second language acquisition/development researchers and practitioners were introduced to chaos/complexity theory and its systems (variously referred to in our field as “complex systems,” complex adaptive systems,” and “complex dynamic systems”) (Larsen-Freeman, 1997). Unsurprisingly, the uptake of the new ideas was nonlinear. When they did attract a growing number of scholars, almost all of the research reports were descriptive—pointing out how language—its evolution, its use, its learning, and its teaching—were all complex, dynamic, nonlinear, emergent, feedback-sensitive, self-organizing, initial condition-sensitive, open, adaptive systems. In addition to these characteristics, because language is comprised of many interacting components and can be characterized by a number of scale-free power laws, such as Zipfian distributions, it indeed qualifies as a complex system.
description: International Journal of Complexity in Education, Vol 4, No 1 (2023)
The DINGO database of axial pile load tests for the UK: settlement prediction in fine-grained soils
Creators: name: Voyagaki, Elia
name: Crispin, Jamie J.
name: Gilder, Charlotte E. L.
name: Ntassiou, Konstantina
name: O’Riordan, Nick
name: Nowak, Paul
name: Sadek, Tarek
name: Patel, Dinesh
name: Mylonakis, George
name: Vardanega, Paul J.
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Science Policy
subject: Plant Biology

description: The availability of reliable field data is critical for the advancement of geotechnical engineering. This is particularly the case for piled foundations; due to the substantial geotechnical uncertainties. The settlement (performance) predictions from established analytical methods may deviate from field measurements by as much as an order of magnitude. This paper provides a statistical assessment of the uncertainty of predictions of pile performance under axial loading using an openly accessible geotechnical database of pile load tests from the United Kingdom. The collected database information was classified by pile type, location, test data quality and availability of geotechnical data. With reference to the data from fine-grained soils, two analytical models were employed to predict foundation settlement. The settlement prediction performance was then studied statistically and the model bias and error compared with reference to the aforementioned categories to identify the impact of different sources of uncertainty and evaluate the use of both models for future geotechnical practice. The two models investigated generally over-predict settlement, which is likely due to conservative selection of key model parameters, such as soil strength.
[ARTICLE] The Pythagorean Geometric Gear (Australian Senior Mathematics Journal / 2018)
Creators: name: Teia, Luis
Publisher: name: figshare
Year: 2022
Subjects: classificationCode: 490499
subject: Pure mathematics not elsewhere classified
classificationCode: 499999
subject: Other mathematical sciences not elsewhere classified

description: Discovering the implications of a theorem takes time. This process relates to fundamental theorems, such as the Pythagorean theorem, and practically has intemporal ramifications. After all, new proofs are still being discovered today (Scimone, 2009). The theorem in itself is not changing, but rather our perspective of it is. That is, the implications of such theorems evolve alongside cultural, scientific and technological advancements. The many different proofs (Maor, 2007) are just one perspective of the theorem. Another perspective concerns the relations that one discovers from the theorem. Einstein showed an example of these two perspectives: (1) by deriving a new proof (Einstein, 2008), and (2) by discovering its implications to the properties of light (Einstein, 1961). The nature of these relations can be mathematical, physical and geometrical. An example of a geometrical relation is Stokes’ dissection of the extended form of Pythagorean theorem (Figure 1). Similarly, the purpose of this paper is to explore new geometrical relations in the Pythagorean theorem, and open doors for new interpretations of the physical world. Pythagoras is included in secondary education around the world including in Australian Curriculum (ACARA, n.d.), and hence this paper will be of interest to all.
The AAMT journal copyright statement allows online sharing as follows: " The authors may publish a copy of the work online on their institutional website or repository, or on third-party research repositories such as Research Gate. " (see link below for further details)-------------------------------------------------------------------------For more public data, please visit my Figshare profile: https://figshare.com/authors/Luis_Teia/10811244
Monte Carlo inference for semiparametric Bayesian regression
Creators: name: Kowal, Daniel R.
name: Wu, Bohan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Methodology (stat.ME)
subject: Statistics Theory (math.ST)
subject: Computation (stat.CO)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Data transformations are essential for broad applicability of parametric regression models. However, for Bayesian analysis, joint inference of the transformation and model parameters typically involves restrictive parametric transformations or nonparametric representations that are computationally inefficient and cumbersome for implementation and theoretical analysis, which limits their usability in practice. This paper introduces a simple, general, and efficient strategy for joint posterior inference of an unknown transformation and all regression model parameters. The proposed approach directly targets the posterior distribution of the transformation by linking it with the marginal distributions of the independent and dependent variables, and then deploys a Bayesian nonparametric model via the Bayesian bootstrap. Crucially, this approach delivers (1) joint posterior consistency under general conditions, including multiple model misspecifications, and (2) efficient Monte Carlo (not Markov chain Monte Carlo) inference for the transformation and all parameters for important special cases. These tools apply across a variety of data domains, including real-valued, positive, and compactly-supported data. Simulation studies and an empirical application demonstrate the effectiveness and efficiency of this strategy for semiparametric Bayesian analysis with linear models, quantile regression, and Gaussian processes. The R package SeBR is available on CRAN.
Development of models for facing tensile forces of soil nail walls using statistical approaches
Creators: name: Lin, Peiyuan
name: Chen, Xianying
name: Jiang, Mingjie
name: Xu, Meijuan
name: Mei, Guoxiong
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Plant Biology

description: The facing is a key component for the design of soil nail walls. However, current design specifications of soil nail walls in China do not specify methods for estimation of facing tensile forces, which has posed challenges for engineers to produce consistent, safe, and cost-effective facing designs. This study first constructs the facing tensile force as the product of the maximum nail load and a facing factor. Then a database containing 91 measured facing tensile force data collected from the literature is developed and used to calibrate the facing factor matching six maximum nail load models that are commonly adopted in China, namely, the simplified incremental calculation models based on the Rankine and Coulomb earth pressure theories, the China Academy of Building Research model, and the China Association for Engineering Construction Standardization model. Based on the developed database, the accuracies of the six proposed models for facing tensile forces are demonstrated to be unbiased on average and the dispersions in the prediction accuracy are ranked from low to medium. Furthermore, the influences of three wall working conditions on prediction accuracy of the developed models are investigated and shown to be practically insignificant. Last, the model biases are characterised as lognormal random variables.
Confirming the oblique rotator model for the extremely slowly rotating O8f?p star HD 108
Creators: name: Shultz, M.
name: Wade, G. A.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The O8f?p star HD 108 is implied to have experienced the most extreme rotational braking of any magnetic, massive star, with a rotational period $P_{\rm rot}$ of at least 55 years, but the upper limit on its spindown timescale is over twice the age estimated from the Hertzsprung-Russell diagram. HD 108's observed X-ray luminosity is also much higher than predicted by the XADM model, a unique discrepancy amongst magnetic O-type stars. Previously reported magnetic data cover only a small fraction ($\sim$3.5\%) of $P_{\rm rot}$, and were furthermore acquired when the star was in a photometric and spectroscopic `low state' at which the longitudinal magnetic field $\langle B_z\rangle$~was likely at a minimum. We have obtained a new ESPaDOnS magnetic measurement of HD 108, 6 years after the last reported measurement. The star is returning to a spectroscopic high state, although its emission lines are still below their maximum observed strength, consistent with the proposed 55-year period. We measured $\langle B_z\rangle=-325 \pm 45$ G, twice the strength of the 2007-2009 observations, raising the lower limit of the dipole surface magnetic field strength to $B_{\rm d} \ge 1$ kG. The simultaneous increase in $\langle B_z\rangle$~and emission strength is consistent with the oblique rotator model. Extrapolation of the $\langle B_z\rangle$~maximum via comparison of HD 108's spectroscopic and magnetic data with the similar Of?p star HD 191612 suggests that $B_{\rm d} > 2$~kG, yielding $t_{\rm S, max}<3$~Myr, compatible with the stellar age. These results also yield a better agreement between the observed X-ray luminosity and that predicted by the XADM model.
description: 9 pages, 7 figures, accepted for publication in MNRAS (MN-17-0243-MJ.R2)
A Dynamic Usage Based Perspective of Bilingual Children’s VAC Development in English
Creators: name: Steinkrauss, Rasmus
name: Green, Clarence
name: Verspoor, Marjolijn
name: Sun, He
Publisher: name: International Journal of Complexity in Education
Year: 2023

description: This article focuses on the effect of home educational activities on the first language (L1) English development of two bilingual children. Their development is approached from a usage-based and a dynamic systems perspective, investigating both the relationship between input and production, and the individual learning trajectories of both children. The article heeds recent calls to investigate the development of verb-argument-constructions (VACs) longitudinally in individual learners. Two simultaneous bilingual children, learning English and Mandarin as L1s and aged 3;8.28 and 3;7.15 at the start of the investigation, were recorded every two-three weeks for about one year while taking part in home educational activities such as shared-book reading. All verbs and their frequencies used in verb-direct object VACs in input and production were extracted and their development investigated. Results confirm both usage-based and dynamic assumptions on language learning. In line with usage-based assumptions, both input and production VAC verb frequencies were Zipfian, each child followed their own input more closely than the other child’s input, and production began with using the more frequent verbs before diversification. In line with dynamic assumptions, the children show individual differences in the variability of VAC verb use and the amount of verb diversification, with the more proficient child (as measured at pre-test) exhibiting higher variability and diversification. This underscores the complementary nature of group and individual studies and attests to the importance of the shape of the input for individual development. Moreover, it shows that development is individually owned, with some learners showing more variability than others. Keywords: verb-argument-constructions, early English learning, complex dynamical systems theory, usage-based theory
description: International Journal of Complexity in Education, Vol 4, No 1 (2023)
Turning the LHC Ring into a New Physics Search Machine
Creators: name: Orava, Risto
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The LHC Collider Ring is proposed to be turned into an ultimate automatic search engine for new physics in four consecutive phases: (1) Searches for heavy particles produced in Central Exclusive Process (CEP): pp -> p + X + p based on the existing Beam Loss Monitoring (BLM) system of the LHC; (2) Feasibility study of using the LHC Ring as a gravitation wave antenna; (3) Extensions to the current BLM system to facilitate precise registration of the selected CEP proton exit points from the LHC beam vacuum chamber; (4) Integration of the BLM based event tagging system together with the trigger/data acquisition systems of the LHC experiments to facilitate an on-line automatic search machine for the physics of tomorrow.
description: 5 pages, 3 figures, Diffraction 2016 CNUM: C16-09-02
The temporal dynamics of group interactions in higher-order social networks
Creators: name: Iacopini, Iacopo
name: Karsai, Márton
name: Barrat, Alain
Publisher: name: arXiv
Year: 2023
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Social and Information Networks (cs.SI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Representing social systems as networks, starting from the interactions between individuals, sheds light on the mechanisms governing their dynamics. However, networks encode only pairwise interactions, while most social interactions occur among groups of individuals, requiring higher-order network representations. Despite the recent interest in higher-order networks, little is known about the mechanisms that govern the formation and evolution of groups, and how people move between groups. Here, we leverage empirical data on social interactions among children and university students to study their temporal dynamics at both individual and group levels, characterising how individuals navigate groups and how groups form and disaggregate. We find robust patterns across contexts and propose a dynamical model that closely reproduces empirical observations. These results represent a further step in understanding social systems, and open up research directions to study the impact of group dynamics on dynamical processes that evolve on top of them.
description: 16 pages, 5 figures, Supplementary Material (15 pages, 25 figures)