cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Vocabulary acquisition by young Greek learners of L2 English The predictive role of Complex Working Memory in Early Foreign Language Learning
Creators: name: Efstathiadi, Lia
Publisher: name: Selected papers on theoretical and applied linguistics
Year: 2016
Subjects: Early Foreign Language Learning; Complex Working Memory

description: The article reports the results of a longitudinal research that took place during 2010-12 in two primary schools in Thessaloniki. It is part of a larger research which explored the cognitive impact of Early Foreign Language Learning (EFLL), in relation to Foreign Language (FL) Aptitude, Phonological Short-term Memory (PSTM) and Complex Working Memory (CWM). The findings suggest that EFLL has a boosting effect on children’s cognitive skills, while the critical predictor of early FL vocabulary performance is the central executive of Working Memory.
description: Selected papers on theoretical and applied linguistics, Vol 21 (2016): Selected Papers on Theoretical and Applied Linguistics from ISTAL, Thessaloniki 5-7 April 2013
Identification of individuals and groups in a public goods experiment
Creators: name: Christens, Sven
name: Dannenberg, Astrid
name: Sachs, Florian
Publisher: name: Universität Kassel
Year: 2019
Subjects: subject: Public goods experiment
subject: Cooperation
subject: Group decisions
subject: Face-to-face communication
subject: Computer chat communication
subject: Identification
subject: 330

description: European Union (EU) Horizon 2020 program, action ERC-2014-STG, Project HUCO, grant number 636746.
description: European Union (EU) Horizon 2020 program, action ERC-2014-STG, Project HUCO, grant number 636746.
What is this thing called autonomy? Finding a definition and a model
Creators: name: Everhard, Carol J.
Publisher: name: Selected papers on theoretical and applied linguistics
Year: 2016
Subjects: autonomy; defining autonomy; models of autonomy; transparency; measurability

description: Interest in autonomy in language learning has escalated in recent decades. Despite its relevance to modern-day teaching, what autonomy is and how language teachers can promote it remains partly enveloped in an aura of mystery. Some factors preventing this aura from being lifted will be examined. The impediments and affordances encountered in the search for a definition and a model of autonomy suited to the Assessment for Autonomy Research Project (AARP), conducted 2005-2010 in the School of English, Aristotle University, are described. Both the AARP definition and model could go some way towards making autonomy more transparent and quantifiable.
description: Selected papers on theoretical and applied linguistics, Vol 21 (2016): Selected Papers on Theoretical and Applied Linguistics from ISTAL, Thessaloniki 5-7 April 2013
The Equivalence Principle in the Non-baryonic Regime
Creators: name: Alvarez, C.
name: Mann, R. B.
Publisher: name: arXiv
Year: 1996
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider the empirical validity of the equivalence principle for non-baryonic matter. Working in the context of the THεμformalism, we evaluate the constraints experiments place on parameters associated with violation of the equivalence principle (EVPs) over as wide a sector of the standard model as possible. Specific examples include new parameter constraints which arise from torsion balance experiments, gravitational red shift, variation of the fine structure constant, time-dilation measurements, and matter/antimatter experiments. We find several new bounds on EVPs in the leptonic and kaon sectors.
description: 22 pages, latex
A pedagogical introduction to the replica method for fragile glasses
Creators: name: Parisi, Giorgio
Publisher: name: arXiv
Year: 1999
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: In this note I present a simplified version of the recent computation (Mezard and Parisi 1998, 1999) of the properties of glasses in the low temperature phase in the framework of the replica theory, using an extension of the tools used in liquid theory. I will only consider here the case of the internal energy at T=0, which can be studied in a simple way without introducing replicas.
description: 7 pages, 1 figure Talk given at Andalo, March 1999; minor errors have been corrected
Decomposition of symmetric multipartite observable
Creators: name: Zhou, You
name: Guo, Chenghao
name: Ma, Xiongfeng
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Production and verification of multipartite quantum state are an essential step in quantum information processing. In this work, we propose an efficient method to decompose symmetric multipartite observables, which are invariant under permutations between parties, with only $(N+1)(N+2)/2$ local measurement settings, where $N$ is the number of qubits. We apply the decomposition technique to evaluate the fidelity between an unknown prepared state and any target permutation invariant state. In addition, for some typical permutation invariant states, such as the Dicke state with a constant number of excitations, $m$, we derive a tight linear bound on the number of local measurement settings, $m(2m+3)N+1$. Meanwhile, for the $GHZ$ state, the $W$ state, and the Dicke state, we prove a linear lower bound, $Θ(N)$. Hence, for these particular states, our decomposition technique is optimal.
description: 16 pages, no figure, comments are welcome
title: Predicting recovery trajectories for the large species and large fish indicators
Creators: name: Fung, Tak
name: Farnsworth, Keith D.
name: Shephard, Samuel
name: Reid, David G.
name: Rossberg, Axel G.
Publisher: name: ASC 2011 - Theme session N
Year: 2024
Subjects: Technologies and data
Ecosystem observation, processes and dynamics

description: No abstracts are to be cited without prior reference to the author.How quickly and to what level do commercial fish stocks recover following release from fishing? Addressing these questions is imperative for long‐term management of overexploited stocks. We use an innovative multi‐trophic model to predict how fish community structures recover from different fishing scenarios when fishing is reduced. This model realistically captures many properties of Northeast Atlantic shelf communities. In particular, it has a unique stochastic algorithm allowing up to thousands of model species to stably coexist, thus allowing realistic species richness to be modelled. Fish community structure is quantified using the large species indicator (LSI) and large fish indicator (LFI), two complementary size‐based indicators. We discovered that targeting large fish species or non‐selective fishing of all fish species always decreased the LSI and LFI. In addition, equilibrium recovery levels decreased with increasing fishing mortality rate F and duration of fishing, reflecting local population extinctions of large fish species. Importantly, recovery times were typically decadal but can be longer than a century, supporting management on at least decadal time‐scales. Furthermore, model communities with realistic richness had recovery trajectories that followed exponential functions, providing a potential gateway for estimating future states. However, those with unrealistic richness had trajectories that fluctuated more and did not follow exponentials—methodologically, this cautions against using models with unrealistic richness to predict recovery. Lastly, simulations for the North Sea, with LFI dynamics following empirical data from 1920 to 2001, suggest that an average F across species <0.2 year–1 is required for LFI recovery to the reference point.
New vector bosons in the electroweak sector: a renormalizable model with decoupling
Creators: name: Casalbuoni, R.
name: De Curtis, S.
name: Dominici, D.
name: Grazzini, M.
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A linear realization of a model of dynamical electroweak symmetry breaking describing additional heavy vector bosons is proposed. The model is a SU(2)_L x U(1) x SU(2)_L' x SU(2)_R' gauge theory, breaking at some high scale u to SU(2)_weak x U(1)_Y and breaking again in the standard way at the electroweak scale v to U(1)_(em). The model is renormalizable and reproduces the Standard Model in the limit u\to infinity. This decoupling property is shown to hold also at the level of radiative corrections by computing, in particular, the epsilon parameters.
description: 39 pages, 16 Figures, Latex
Additional file 1 of Alu distribution and mutation types of cancer genes
Creators: name: Zhang, Wensheng
name: Edwards, Andrea
name: Fan, Wei
name: Deininger, Prescott
name: Zhang, Kun
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1:The Q-Q plots for fitting a Gamma distribution to the gene-level intron Alu densities in 20 chromosomes. (PDF 290 KB)
title: Ecological and economic consequences of different recovery scenarios of depleted stocks
Creators: name: Calduch-Verdiell, Núria
name: Andersen, Ken H.
name: MacKenzie, Brian R.
name: Ravn-Jonse, Lars
name: Vaupel, James W.
Publisher: name: ASC 2011 - Theme session N
Year: 2024
Subjects: Technologies and data
Ecosystem observation, processes and dynamics

description: No abstracts are to be cited without prior reference to the author.There is an increasing trend in the number of fish stocks throughout the world that are overexploited, depleted, or rebuilding and for which effective rebuilding plans are required. It has recently been suggested that the largest and oldest females of a stock (the ʺbig–oldʺ fish) produce more eggs than smaller, younger females, and therefore a rebuilding plan may have to pay particular attention to these big–old individuals. This paper develops an ecological–economic evaluation tool to explore the effect of choosing a rebuilding scenario based on the time needed to rebuild the stock and on the net benefit generated by the fishery during the rebuilding period and beyond. This is done by merging a classical age‐structured model for a single‐species population and an economic cost–evaluation framework to describe the consequences for the fish populations and for the fishery. Different rebuilding scenarios for two theoretical stocks with life history traits typical of a large and long‐lived species and of a small and short‐lived species are evaluated and compared. The results show that time to rebuild a depleted population increases as a function of asymptotic size. Removing fishing mortality on big–old fish during the rebuilding period allow the stock to rebuild at a faster rate than fishing all age groups. However, the analysis shows that a shorter rebuilding period does not contribute to increase the net benefit of the fishery during the rebuilding period and beyond. From an economical perspective, the choice of the rebuilding scenario is irrelevant.
Adaptation of the Strategy Inventory for Language Learning (SILL) for students aged 12-15 into Greek: Developing an adaptation protocol
Creators: name: Gavriilidou, Zoe
name: Mitits, Lydia
Publisher: name: Selected papers on theoretical and applied linguistics
Year: 2016
Subjects: questionnaire adaptation; SILL; language learning strategies; reliability; validity

description: The purpose of the study was to develop an adaptation protocol for Oxford’s Strategy Inventory for Language learning (SILL) from English into Greek to be administered to monolingual/multilingual students aged 12-15 in secondary schools in Thrace, Greece. This study focuses on following the appropriate adaptation protocol in order to maximize the questionnaire reliability and validity, both when used with the particular learners and when used to compare scores across cultures and languages. The original scale was translated into Greek, back-translated and reviewed. Cross-cultural adaptation included the experts’ revision, followed by the instrument administration to 50 participants. Its internal consistency was .91. Test-retest reliability ranged from fair to good for the total scale and its six-subscales.
description: Selected papers on theoretical and applied linguistics, Vol 21 (2016): Selected Papers on Theoretical and Applied Linguistics from ISTAL, Thessaloniki 5-7 April 2013
Invariant-equivariant representation learning for multi-class data
Creators: name: Feige, Ilya
Publisher: name: arXiv
Year: 2019
Subjects: subject: Machine Learning (stat.ML)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Representations learnt through deep neural networks tend to be highly informative, but opaque in terms of what information they learn to encode. We introduce an approach to probabilistic modelling that learns to represent data with two separate deep representations: an invariant representation that encodes the information of the class from which the data belongs, and an equivariant representation that encodes the symmetry transformation defining the particular data point within the class manifold (equivariant in the sense that the representation varies naturally with symmetry transformations). This approach is based primarily on the strategic routing of data through the two latent variables, and thus is conceptually transparent, easy to implement, and in-principle generally applicable to any data comprised of discrete classes of continuous distributions (e.g. objects in images, topics in language, individuals in behavioural data). We demonstrate qualitatively compelling representation learning and competitive quantitative performance, in both supervised and semi-supervised settings, versus comparable modelling approaches in the literature with little fine tuning.
description: 8 pages, 5 figures, 2 tables, 2 appendices
Seesaw mirroring between light and heavy Majorana neutrinos with the help of the $S^{}_3$ reflection symmetry
Creators: name: Xing, Zhi-zhong
name: Zhang, Di
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: In the canonical seesaw mechanism we require the relevant neutrino mass terms to be invariant under the $S^{}_3$ charge-conjugation transformations of left- and right-handed neutrino fields. Then both the Dirac mass matrix $M^{}_{\rm D}$ and the right-handed neutrino mass matrix $M^{}_{\rm R}$ are well constrained, so is the effective light Majorana neutrino mass matrix $M^{}_ν$ via the seesaw formula. We find that these mass matrices can be classified into 22 categories, among which some textures respect the well-known $μ$-$τ$ permutation or reflection symmetry and flavor democracy. It is also found that there exist remarkable structural equalities or similarities between $M^{}_ν$ and $M^{}_{\rm R}$, reflecting a seesaw mirroring relationship between light and heavy Majorana neutrinos. We calculate the corresponding light neutrino masses and flavor mixing parameters as well as the CP-violating asymmetries in decays of the lightest heavy Majorana neutrino, and show that only the flavored leptogenesis mechanism is possible to work for three categories of $M^{}_{\rm D}$ and $M^{}_{\rm R}$ in the $S^{}_3$ reflection symmetry limit.
description: 33 pages, 1 table. v2: matches the version accepted for publication in JHEP
Symmetry and designability for lattice protein models
Creators: name: Wang, Tairan
name: Miller, Jonathan
name: Wingreen, Ned S.
name: Tang, Chao
name: Dill, Ken A.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Biomolecules (q-bio.BM)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Native protein folds often have a high degree of symmetry. We study the relationship between the symmetries of native proteins, and their designabilities -- how many different sequences encode a given native structure. Using a two-dimensional lattice protein model based on hydrophobicity, we find that those native structures that are encoded by the largest number of different sequences have high symmetry. However only certain symmetries are enhanced, e.g. x/y-mirror symmetry and $180^o$ rotation, while others are suppressed. If it takes a large number of mutations to destabilize the native state of a protein, then, by definition, the state is highly designable. Hence, our findings imply that insensitivity to mutation implies high symmetry. It appears that the relationship between designability and symmetry results because protein substructures are also designable. Native protein folds may therefore be symmetric because they are composed of repeated designable substructures.
description: 13 pages, 10 figures
Perturbations of spacetime: gauge transformations and gauge invariance at second order and beyond
Creators: name: Bruni, Marco
name: Matarrese, Sabino
name: Mollerach, Silvia
name: Sonego, Sebastiano
Publisher: name: arXiv
Year: 1996
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We consider in detail the problem of gauge dependence that exists in relativistic perturbation theory, going beyond the linear approximation and treating second and higher order perturbations. We first derive some mathematical results concerning the Taylor expansion of tensor fields under the action of one-parameter families (not necessarily groups) of diffeomorphisms. Second, we define gauge invariance to an arbitrary order $n$. Finally, we give a generating formula for the gauge transformation to an arbitrary order and explicit rules to second and third order. This formalism can be used in any field of applied general relativity, such as cosmological and black hole perturbations, as well as in other spacetime theories. As a specific example, we consider here second order perturbations in cosmology, assuming a flat Robertson-Walker background, giving explicit second order transformations between the synchronous and the Poisson (generalized longitudinal) gauges.
description: slightly revised version, accepted for publication in Classical and Quantum Gravity. 27 pages including 4 figures, latex using 2 CQG style files: ioplppt.sty, iopl10.sty
Scaffolding oral interaction in a CLIL context: A qualitative study
Creators: name: Gerakopoulou, Olga
Publisher: name: Selected papers on theoretical and applied linguistics
Year: 2016
Subjects: SLA; CLIL; socialization; scaffolding strategies; interaction

description: The learning of languages as a basic prerequisite in the European Union has created a new educational paradigm called Content and Language Integrated Learning (CLIL). In the CLIL classroom the teacher has to assist students in the learning of content and language at the same time. The support that the teacher offers to the learners to accomplish this dual target is expressed through scaffolding (Vygotsky 1978; Bruner 1985), that is a temporary assistance until the student is able to work autonomously. This study aims at investigating and describing instances of scaffolding strategies applied in the CLIL secondary education classroom.
description: Selected papers on theoretical and applied linguistics, Vol 21 (2016): Selected Papers on Theoretical and Applied Linguistics from ISTAL, Thessaloniki 5-7 April 2013
Thermodynamics in quenched QCD: energy--momentum tensor with two-loop order coefficients in the gradient flow formalism
Creators: name: Iritani, Takumi
name: Kitazawa, Masakiyo
name: Suzuki, Hiroshi
name: Takaura, Hiromasa
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Recently, Harlander et al.\ [Eur.\ Phys.\ J.\ C {\bf 78}, 944 (2018)] have computed the two-loop order (i.e., NNLO) coefficients in the gradient-flow representation of the energy--momentum tensor (EMT) in vector-like gauge theories. In this paper, we study the effect of the two-loop order corrections (and the three-loop order correction for the trace part of the EMT, which is available through the trace anomaly) on the lattice computation of thermodynamic quantities in quenched QCD. The use of the two-loop order coefficients generally reduces the $t$~dependence of the expectation values of the EMT in the gradient-flow representation, where $t$~is the flow time. With the use of the two-loop order coefficients, therefore, the $t\to0$ extrapolation becomes less sensitive to the fit function, the fit range, and the choice of the renormalization scale; the systematic error associated with these factors is considerably reduced.
description: 20 pages, 15 figures, the final version to appear in PTEP
title: What is the dominating contribution to the density-dependence of fish population growth?
Creators: name: Rossberg, Axel G.
name: Fung, Tak
name: Reid, David
name: Farnsworth, Keith D.
Publisher: name: ASC 2011 - Theme session N
Year: 2024
Subjects: Technologies and data
Ecosystem observation, processes and dynamics

description: No abstracts are to be cited without prior reference to the author.The question of how density‐dependence arises in the population dynamics of fish stocks and, hence, what determines their carrying capacity, is paramount for many issues of modern fisheries management. The identification of maximum sustainable yield in a multispecies context, for example, depends on it, and so do the time‐scales for population dynamics in complex assemblages of stocks. Yet, despite decades of research, the question has remained enigmatic. Three lines of reasoning are explored in approaching this question. The first highlights the observation that, in marine community size spectra, the density of biomass along the logarithmic body‐mass axis is approximately constant over many orders of magnitude in body mass. Most theories explaining this phenomenon invoke carrying capacities entirely determined by trophic interactions. The second line of reasoning highlights the high prevalence of non‐trophic density‐dependences in foodweb models. It is documented that these non‐trophic effects are often motivated by their stabilizing effects on population dynamics, rather than biologically. It is pointed out that alternative modelling strategies can lead to complex, stable communities regulated by feeding interactions alone. The third line of reasoning discusses empirical evidence supporting alternative mechanisms for density‐dependence.
Structure and Dynamics of Liquid Iron under Earth's Core Conditions
Creators: name: Alfe`, D.
name: Kresse, G.
name: Gillan, M. J.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: First-principles molecular dynamics simulations based on density-functional theory and the projector augmented wave (PAW) technique have been used to study the structural and dynamical properties of liquid iron under Earth's core conditions. As evidence for the accuracy of the techniques, we present PAW results for a range of solid-state properties of low- and high-pressure iron, and compare them with experimental values and the results of other first-principles calculations. In the liquid-state simulations, we address particular effort to the study of finite-size effects, Brillouin-zone sampling and other sources of technical error. Results for the radial distribution function, the diffusion coefficient and the shear viscosity are presented for a wide range of thermodynamic states relevant to the Earth's core. Throughout this range, liquid iron is a close-packed simple liquid with a diffusion coefficient and viscosity similar to those of typical simple liquids under ambient conditions.
description: 13 pages, 8 figures
The effectiveness of learning a foreign language via a distance learning tool: Τesting the Duolingo application
Creators: name: Psychogyiou, Athanasia
name: Karasimos, Athanasios
Publisher: name: Selected papers on theoretical and applied linguistics
Year: 2019
Subjects: Duolingo, language skills, productive skills, receptive skills, effectiveness, distance learning, grammar, vocabulary, pronunciation

description: This research is conducted to explore the effectiveness of studying online. Among the distance learning practices there is the Duolingo application to help users learn a foreign language. In particular, this is a case study aiming at exploring whether the Duolingo application is effective enough in learning a foreign language and developing the language skills. The data for this study was collected by researching tools such as questionnaires, interviews, and tests, before and after the learning process. 31 candidates participated in this research and talked about their experience. Collecting and analyzing the data of the study distributed into making some assumptions about the application. Taking into account the participants’ opinions and suggestions, the researcher managed to identify important issues in the application. The application seems to be effective in the attempt of learning a foreign language. However, there are some issues to be explored regarding the exploration of the language skills and other technical issues on the application. These issues need to be discussed and analyzed for the further improvement of it. Additionally, the researcher gives her opinion by personal experience on using the application and then she suggests some changes to make the application more efficient.
description: Selected papers on theoretical and applied linguistics, Vol 23 (2019): Selected Papers on Theoretical and Applied Linguistics from 23rd ISTAL, Thessaloniki 31 March - 2 April 2017
Freezing of dynamical exponents in low dimensional random media
Creators: name: Castillo, Horacio
name: Doussal, Pierre Le
Publisher: name: arXiv
Year: 2000
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: A particle in a random potential with logarithmic correlations in dimensions $d=1,2$ is shown to undergo a dynamical transition at $T_{dyn}>0$. In $d=1$ exact results demonstrate that $T_{dyn}=T_c$, the static glass transition temperature, and that the dynamical exponent changes from $z(T)=2 + 2 (T_c/T)^2$ at high temperature to $z(T)= 4 T_c/T$ in the glass phase. The same formulae are argued to hold in $d=2$. Dynamical freezing is also predicted in the 2D random gauge XY model and related systems. In $d=1$ a mapping between dynamics and statics is unveiled and freezing involves barriers as well as valleys. Anomalous scaling occurs in the creep dynamics.
description: 5 pages, 2 figures, RevTex
Analytic solutions to the maximum and average exoplanet transit depth for common stellar limb darkening laws
Creators: name: Heller, René
Publisher: name: arXiv
Year: 2019
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The depth of an exoplanetary transit in the light curve of a distant star is commonly approximated as the squared planet-to-star radius ratio, (R_p/R_s)^2. Stellar limb darkening, however, results in significantly deeper transits. Here we derive analytical solutions to the overshoot of the mid-transit depth caused by stellar limb darkening compared to the (R_p/R_s)^2 estimate for arbitrary transit impact parameters. In turn, this allows us to compute the true planet-to-star radius ratio from the transit depth for a given parameterization of a limb darkening law and for a known transit impact parameter. We calculate the maximum emerging specific stellar intensity covered by the planet in transit and derive analytic solutions for the transit depth overshoot. Solutions are presented for the linear, quadratic, square-root, logarithmic, and non-linear stellar limb darkening with arbitrary transit impact parameters. We also derive formulae to calculate the average intensity along the transit chord, which allows us to estimate the actual transit depth (and therefore R_p/R_s) from the mean in-transit flux. The transit depth overshoot of exoplanets compared to the (R_p/R_s)^2 estimate increases from about 15% for A main-sequence stars to roughly 20% for sun-like stars and some 30% for K and M stars. The error in our analytical solutions for R_p/R_s from the small planet approximation is orders of magnitude smaller than the uncertainties arising from typical noise in real light curves and from the uncertain limb darkening. Our equations can be used to predict with high accuracy the expected transit depth of extrasolar planets. The actual planet radius can be calculated from the measured transit depth or from the mean in-transit flux if the stellar limb darkening can be properly parameterized and if the transit impact parameter is known. Light curve fitting is not required.
description: 7 pages, 3 figures (2 col, 1 b/w), published in A&A
Defect formation in inhomogeneous 2-nd order phase transition: theory and experiment
Creators: name: Volovik, G. E.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: The status quo in our understanding of defect formation during a rapid transition into the broken symmetry state in condensed matter and cosmology is discussed. An observation of vortex nucleation in neutron absorption experiments in superfluid 3He-B is interpreted in terms of defect formation during inhomogeneous cooling through T_c. Due to the temperature gradient in the locally heated region the superfluid phase transition occurs as a propagating front. The theoretical considerations of vortex formation at the propagating front are based on work by Kibble-Volovik, Kopnin-Thuneberg, and Aranson-Kopnin-Vinokur.
description: 6 pages, 5 figures (modified), invited talk at LT-22 (August 1999), modified after referee report, references are added
Lexical and grammatical aspect in Mild Cognitive Impairment and Alzheimer’s disease
Creators: name: Roumpea, Georgia
name: Nousia, Anastasia
name: Stavrakaki, Stavroula
name: Nasios, Grigorios
name: Manouilidou, Christina
Publisher: name: Selected papers on theoretical and applied linguistics
Year: 2019
Subjects: Mild Cognitive Impairment, Alzheimer’s disease, lexical aspect, grammatical aspect

description: This study aims at investigating the ability of Greek-speaking individuals diagnosed with Alzheimer’s disease (AD) and Mild Cognitive Impairment (MCI) to comprehend and produce verbs that vary with respect to their lexical and grammatical aspect. Lexical aspect concerns situation types with different temporal and semantic features, such as activity (run), state (know), achievement (break), semelfactive (hit), accomplishment (build) verbs (Smith 1997). Grammatical aspect is divided into perfective (I untied) and imperfective (I was untying) (Comrie 1976). The interaction of lexical and grammatical aspect and how that might be affected by patients’ linguistic impairment is also examined.
description: Selected papers on theoretical and applied linguistics, Vol 23 (2019): Selected Papers on Theoretical and Applied Linguistics from 23rd ISTAL, Thessaloniki 31 March - 2 April 2017
Baryon Asymmetry, Neutrino Mixing and Supersymmetric SO(10) Unification
Creators: name: Plumacher, M.
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The baryon asymmetry of the universe can be explained by the out-of-equilibrium decays of heavy right-handed neutrinos. We analyse this mechanism in the framework of a supersymmetric extension of the Standard Model and show that lepton number violating scatterings are indispensable for baryogenesis, even though they may wash-out a generated asymmetry. By assuming a similar pattern of mixings and masses for neutrinos and up-type quarks, as suggested by SO(10) unification, we can generate the observed baryon asymmetry without any fine tuning, if $(B-L)$ is broken at the unification scale $Λ_{GUT}\sim 10^{16} $GeV and, if $m_{\n_\m} \sim 3\cdot 10^{-3} $eV as preferred by the MSW solution to the solar neutrino deficit.
description: latex2e, 39 pages, 15 figures, uses epsfig and pstricks. Additional contribution to the CP-asymmetry added, conclusions unchanged. Final version, to appear in Nucl.Phys.B
Differentiated instruction in the EFL classroom: Discrepancies between teachers’ self-report questionnaires and actual practices
Creators: name: Sougari, Areti-Maria
name: Mavroudi, Anastasia
Publisher: name: Selected papers on theoretical and applied linguistics
Year: 2019
Subjects: differentiated instruction, differentiated strategies, Greek state schools, primary education, English language teaching

description: This paper aims at examining the classroom implementation of differentiated instruction (DI) in the Greek state primary school. Data were collected via a self-report questionnaire and classroom observations. The questionnaire was completed by 149 teachers of English. Ten teachers were also observed during their actual classroom teaching practices. The findings indicate that, despite the participants’ positive attitude towards DI, the Greek primary classroom remains a teacher-centered learning environment. Moreover, the participants’ observed use of DI strategies (e.g. group-driven activities) was less frequent than their reported use. This could be attributed to teachers’ misconceptions of what DI entails for classroom implementation, as well as to classroom contingencies.
description: Selected papers on theoretical and applied linguistics, Vol 23 (2019): Selected Papers on Theoretical and Applied Linguistics from 23rd ISTAL, Thessaloniki 31 March - 2 April 2017
Joining forces to meet the needs of (environmental) citizen science in conflict zones
Creators: name: Berti Suman, Anna
name: Zourou, Katerina
name: Oikonomou, Stefania
name: Gold, Margaret
name: Castell, Nuria
Publisher: name: Zenodo
Year: 2024
Subjects: citizen engagement
Ukraine
Environmental justice
citizen science

description: The ongoing Russo-Ukrainian war triggered the development of numerous citizen science actions that gather data on environmental and health issues (Zourou & Oikonomou, ECSA 2022), and on the associated human rights violations. The data collected by these initiatives one day could become evidence in judicial fora, for example in international criminal and human rights tribunals. Already at present this evidence is being used in the ‘court’ of social media and in the news. Citizen-generated data in conflict zones, however, should be treated with a critical eye, bringing along considerations and questions on responsible management as well as on potential misuse of such data. 

In the workshop we: 

presented to the participants selected cases and projects of citizen science deployed during the Russo-Ukrainian war (GROMADA project, CitiObs project); 

asked participants to reflect in a proactive manner on which needs and knowledge/resources gaps these communities may face; 

elaborated strategies to respond to these needs as representatives of different ‘worlds’ (e.g., participants from academia; from ECSA; for a citizen science initiative) and present such strategies in a final debriefing session.
IoTSan: Fortifying the Safety of IoT Systems
Creators: name: Nguyen, Dang Tu
name: Song, Chengyu
name: Qian, Zhiyun
name: Krishnamurthy, Srikanth V.
name: Colbert, Edward J. M.
name: McDaniel, Patrick
Publisher: name: arXiv
Year: 2018
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Today's IoT systems include event-driven smart applications (apps) that interact with sensors and actuators. A problem specific to IoT systems is that buggy apps, unforeseen bad app interactions, or device/communication failures, can cause unsafe and dangerous physical states. Detecting flaws that lead to such states, requires a holistic view of installed apps, component devices, their configurations, and more importantly, how they interact. In this paper, we design IoTSan, a novel practical system that uses model checking as a building block to reveal "interaction-level" flaws by identifying events that can lead the system to unsafe states. In building IoTSan, we design novel techniques tailored to IoT systems, to alleviate the state explosion associated with model checking. IoTSan also automatically translates IoT apps into a format amenable to model checking. Finally, to understand the root cause of a detected vulnerability, we design an attribution mechanism to identify problematic and potentially malicious apps. We evaluate IoTSan on the Samsung SmartThings platform. From 76 manually configured systems, IoTSan detects 147 vulnerabilities. We also evaluate IoTSan with malicious SmartThings apps from a previous effort. IoTSan detects the potential safety violations and also effectively attributes these apps as malicious.
description: Proc. of the 14th ACM CoNEXT, 2018
Power-Laws in Nonlinear Granular Chain under Gravity
Creators: name: Hong, Jongbae
name: Ji, Jeong-Young
name: Kim, Heekyong
Publisher: name: arXiv
Year: 1998
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The signal generated by a weak impulse propagates in an oscillatory way and dispersively in a gravitationally compacted granular chain. For the power-law type contact force, we show analytically that the type of dispersion follows power-laws in depth. The power-law for grain displacement signal is given by $h^{-1/4(1-1/p)}$ where $h$ and $p$ denote depth and the exponent of contact force, and the power-law for the grain velocity is $h^{-1/4({1/3}+1/p)}$. Other depth-dependent power-laws for oscillation frequency, wavelength, and period are given by combining above two and the phase velocity power-law $h^{1/2(1-1/p)}$. We verify above power-laws by comparing with the data obtained by numerical simulations.
description: 12 pages, 3 figures; Changed content
title: An end-to-end model of a coastal upwelling system: propagation of lower trophic level variability to upper trophic levels in the Northern California Current
Creators: name: Ruzicka, James J.
name: Steele, John H.
name: Litz, Marisa N. C.
name: Peterson, William T
name: Brodeur, Richard D.
name: Wainwright, Thomas C.
Publisher: name: ASC 2011 - Theme session N
Year: 2024
Subjects: Technologies and data
Ecosystem observation, processes and dynamics

description: No abstracts are to be cited without prior reference to the author.Predicting ecosystem response to future climate variability requires a mechanistic understanding of ecosystem dynamics. Foodweb models are useful platforms for estimating functional group response to structural changes among energy flow pathways. However, they do not themselves incorporate the physical processes that drive variability among bottom‐up energy supply processes. The Northern California Current (NCC) ecosystem is a seasonally productive upwelling system. Plankton productivity and community composition vary on interannual and decadal timescales due to variable nutrient input via coastal upwelling and due to climate‐scale processes that force changes of the local meso‐zooplankton grazer community via large‐scale water‐mass transport. To study propagation of lower trophic level variability across all trophic levels, an NPZD (nutrient–phytoplankton–zooplankton–detritus) model was used to drive an end‐to‐end foodweb model of the NCC ecosystem. The plankton model was coupled to a one‐dimensional, cross‐shelf Ekman transport and upwelling model. System production was balanced between new production supported by input of upwelled nutrients and loss of plankton from the shelf domain via Ekman transport. The functional response parameters of the meso‐zooplankton were varied seasonally appropriate to time‐series observations of the copepod community size composition. Propagation of model error during alternate scenario runs was analysed via Monte‐Carlo sampling of potential foodwebs drawn from observed (or assumed) biomass, physiological parameter, and diet distributions. Qualitative validation of modelled energy flow pathways was possible by comparison of diatom and dinoflagellate‐derived fatty acid tracers in forage fish tissues to the modelled/predicted composition during years of differing phytoplankton community composition.
The reading-to-write construct across languages: Analysing written mediation tasks and performance
Creators: name: Stathopoulou, Maria
Publisher: name: Selected papers on theoretical and applied linguistics
Year: 2019
Subjects: reading-to-write construct, cross-language mediation task, testing translanguaging

description: This paper discusses the nature of mediation tasks as reading-to-write tasks which ask test-takers to relay in one language messages purposefully extracted from a source text into another language, so as to restore communication gaps between interlocutors who do not share the same language (i.e., cross-language mediation). Drawing data from the Greek national multilingual exam suite (KPG), which innovatively assesses users' ability to mediate, an ability also included in the Common European Framework of Reference for Languages, this paper adds to the theorization of the particular notion in an effort to demystify the nature of mediation (Stathopoulou 2009, 2015, 2016a, 2016b), a rather unexplored area in the field of foreign language didactics.
description: Selected papers on theoretical and applied linguistics, Vol 23 (2019): Selected Papers on Theoretical and Applied Linguistics from 23rd ISTAL, Thessaloniki 31 March - 2 April 2017
Additional file 2 of Alu distribution and mutation types of cancer genes
Creators: name: Zhang, Wensheng
name: Edwards, Andrea
name: Fan, Wei
name: Deininger, Prescott
name: Zhang, Kun
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 2:The analysis of genes deviating from the diagonal lines of the Q-Q plots for chromosomes-1, -3, -6, -13, -21, and -X. (PDF 10 KB)
title: Signatures of fishing on marine foodweb structure
Creators: name: Fung, Tak
name: Farnsworth, Keith D.
name: Reid, David G.
name: Rossberg, Axel G.
Publisher: name: ASC 2011 - Theme session N
Year: 2024
Subjects: Technologies and data
Ecosystem observation, processes and dynamics

description: No abstracts are to be cited without prior reference to the author.The Marine Strategy Framework Directive requires EU states to develop indicators characterizing marine environmental status. As acknowledged by the EU Commission in 2010, there is a need to develop indicators that capture the structure of foodwebs. To allow informed management, it is essential that chosen indicators are sensitive to anthropogenic pressures. We consider three species‐resolved foodweb indicators and assess their sensitivity to an increasing fishing mortality rate F, using a multi‐trophic species‐resolved model parameterized for the Northeast Atlantic. This model uses a special algorithm mimicking community assembly, which generates communities with hundreds to thousands of dynamically coexisting model species, reflecting the species richness of real marine foodwebs. Thus, this modelling approach is a highly appropriate method for projecting future states of fished foodwebs to assess the sensitivity of species‐resolved foodweb indicators. The three indicators we consider are the Shannon–Wiener Index (SWI), average degree of satiation (related to average productivity) and average number of prey species, as computed using all fish species. We found that with increasing F, the SWI and average prey diversity decreased whereas the average degree of satiation increased. However, for all three indicators, the percentage change was < 25% for F ≤ 0.5 year–1. Thus, these indicators are not particularly sensitive to fishing. We show that sensitivity can be substantially improved when computing these indicators using a subset of fish species in a specified range of trophic levels or species size classes.
Spherical structure factor and classification of hyperuniformity on the sphere
Creators: name: Božič, Anže Lošdorfer
name: Čopar, Simon
Publisher: name: arXiv
Year: 2018
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Understanding how particles are arranged on the sphere is not only central to numerous physical, biological, and materials systems but also finds applications in mathematics and in analysis of geophysical and meteorological measurements. In contrast to particle distributions in Euclidean space, restriction that the particles should lie on the sphere brings about several important constraints. These require a careful extension of quantities used for particle distributions in Euclidean space to those confined to the sphere. We introduce a framework designed to analyze and classify structural (dis)order in particle distributions constrained to the sphere. The classification is based on the concept of hyperuniformity, which was introduced 15 years ago and since then studied extensively in Euclidean space, yet has only very recently been considered for the sphere. We build our framework on a generalization of the structure factor on the sphere, which we relate to the power spectrum of the corresponding multipole expansion. The spherical structure factor is then shown to couple with cap number variance, a measure of local density fluctuations, allowing us to derive different forms of the variance. In this way, we construct a classification of hyperuniformity for scale-free particle distributions on the sphere and show how it can be extended to other distributions as well. We demonstrate that hyperuniformity on the sphere can be defined either through a vanishing spherical structure factor at low multipole numbers or through a scaling of the cap number variance, in both cases extending the Euclidean definition while pointing out crucial differences. Our work provides a comprehensive tool for detecting long-range order on spheres and the analysis of spherical computational meshes, biological and synthetic spherical assemblies, and ordering phase transitions in spherically-distributed particles.
description: 17 pages, 7 figures
Quantifying Greek rhyme
Creators: name: Topintzi, Nina
name: Avdelidis, Konstantinos
name: Valkanou, Theodora
Publisher: name: Selected papers on theoretical and applied linguistics
Year: 2019
Subjects: rhyme, database, detection algorithms, rich rhyme, imperfect rhyme

description: In this paper we report on Greek Rhyme (GrR), the first freely accessible pilot database on rhyme in Greek poetry. The database contains several poems and is constantly expanding. For the purposes of this project, specially designed algorithms have been constructed for automatic rhyme detection and classification according to numerous parameters, including rich and imperfect rhymes, among others. GrR facilitates the study of patterns of rhyme within the work of a single poet and enables comparison with the rhyme schemata found in other poets. It is thus an invaluable tool for both linguists and philologists with interest in poetic meter.
description: Selected papers on theoretical and applied linguistics, Vol 23 (2019): Selected Papers on Theoretical and Applied Linguistics from 23rd ISTAL, Thessaloniki 31 March - 2 April 2017