cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Tax morale, influencing factors, evaluation opportunities and problems: the case of Estonia Maksumoraal, selle mõjutegurid, hindamise võimalused ja probleemid Eesti näitel
Creators: name: Lillemets, Kerly
Publisher: name: MATTIMAR OÜ
Year: 2013
Subjects: tax compliance; tax morale; arrears; tax behavior; voluntary payment; payment compliance; tax evasion; tax avoidance; tax authority; taxpayer

description: .The individual willingness of a person to pay taxes is the result of the complex behavior of the person affected by various factors. The research object of this article is the individual willingness of the members of the Estonian society to pay taxes and the possible influence factors for this willingness. The objective of the author in this article is to evaluate the tax related behavior of individuals in comparison to tax debts and personal demographic and psychographic based indicators, to compare the results with the results of the tests that had previously been carried out and to try to identify the possible role of the society upon formation and education of the tax related behavior of an individual. The statistical indicators – tax debts of individual persons, the gender and age related structure of the persons owing taxes in the population – serving as the basis of this article confirm the earlier results of the empirical research supported by values, based on which the willingness level of paying taxes is connected to the person-based independent indicators as gender and age
description: Estonian Discussions on Economic Policy, Vol 18 (2010)
Syntactic variation of support verb constructions
Creators: name: Laporte, Eric
name: Ranchhod, Elisabete
name: Yannacopoulou, Anastasia
Publisher: name: arXiv
Year: 2009
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: We report experiments about the syntactic variations of support verb constructions, a special type of multiword expressions (MWEs) containing predicative nouns. In these expressions, the noun can occur with or without the verb, with no clear-cut semantic difference. We extracted from a large French corpus a set of examples of the two situations and derived statistical results from these data. The extraction involved large-coverage language resources and finite-state techniques. The results show that, most frequently, predicative nouns occur without a support verb. This fact has consequences on methods of extracting or recognising MWEs.
The Effect of training for competitive rowing on cardiovascular condition as measured by the brachial pulse wave (Cameron Heartometer)
Creators: name: Wallace, Bruce Thomson
Publisher: name: University of British Columbia
Year: 2011

description: The purpose of this study was to examine the effects of training for competitive rowing on cardiovascular condition as measured by the brachial pulse wave (Cameron Heartometer). Brachial pulse wave records were taken on fifteen male subjects (nine varsity and six freshmen rowers) every week over a ten week period. Measurements of fourteen variables were obtained from each individual brachial pulse wave record. The data for each subject consisted of 10 serial measurements for each of 14 brachial pulse wave variables. There were thus 14 variables for each of 15 subjects, giving 210 sets of variables in total. Each of these sets was tested for linearity of regression against number of days elapsed from the beginning of the ten weeks testing period to the time when the pulse wave record was made. As a means of determining relative cardiovascular condition of rowers during training, mean measurements for twelve brachial pulse wave variables of (a) varsity and (b) freshmen crew members were compared with corresponding mean measurements for four non-rowing athletic groups. The brachial pulse wave tracings obtained during the training period suggest that progressive changes in the variables studied were, on the whole, relatively small and unstable. The data suggest that heart rate - blood pressure measurements are fairly sensitive variables in reflecting the effects of training but other measurements of the brachial pulse wave are not. Comparison of the rower's measurements with those of other athletic groups showed that varsity rowers were superior in cardiovascular condition to freshmen rowers before during and after training and that both groups were in many respects superior in cardiovascular condition to other non-rowing athletic groups.
Accelerating Dissipative State Preparation with Adaptive Open Quantum Dynamics
Creators: name: Pocklington, Andrew
name: Clerk, Aashish A.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A wide variety of dissipative state preparation schemes suffer from a basic time-entanglement tradeoff: the more entangled the steady state, the slower the relaxation to the steady state. Here, we show how a minimal kind of adaptive dynamics can be used to completely circumvent this tradeoff, and allow the dissipative stabilization of maximally entangled states with a finite time-scale. Our approach takes inspiration from simple fermionic stabilization schemes, which surprisingly are immune to entanglement-induced slowdown. We describe schemes for accelerated stabilization of many-body entangled qubit states (including spin squeezed states), both in the form of discretized Floquet circuits, as well as continuous time dissipative dynamics. Our ideas are compatible with a number of experimental platforms.
Small zeros of hermitian forms over a quaternion algebra
Creators: name: Chan, Wai Kiu
name: Fukshansky, Lenny
Publisher: name: arXiv
Year: 2009
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11G50, 11E12, 11E39

description: Let $D$ be a positive definite quaternion algebra over a totally real number field $K$, $F(X,Y)$ a hermitian form in 2N variables over $D$, and $Z$ a right $D$-vector space which is isotropic with respect to $F$. We prove the existence of a small-height basis for $Z$ over $D$, such that $F(X,X)$ vanishes at each of the basis vectors. This constitutes a non-commutative analogue of a theorem of Vaaler, and presents an extension of the classical theorem of Cassels on small zeros of rational quadratic forms to the context of quaternion algebras.
description: 14 pages; to appear in Acta Arithmetica
Performance of selected Estonian firms financed with start-up frant: ability to follow plans and grant usage efficiency. Starditoetuse poolt finantseeritud valitud alustavate ettevõtete tegevuse tulemuslikkus: võimekus plaanidest kinni pidada ning stardit
Creators: name: Lukason, Oliver
name: Masso, Jaan
Publisher: name: MATTIMAR OÜ
Year: 2013
Subjects: start-up firms; start-up grants; Estonia

description: Whereas start-up firms are important engines of growth and face at the same time many impediments in the market, government aid to start-ups has been used extensively in different countries. In this article we have studied the performance of a small sample on new Estonian firms that received public start-up grant. For the analysis we use the rather unique data on the firms’ plans for the 3 successive years after the start-up. The decisions to grant the start-up aid were maid based on these plans. The results indicated that while many firms could not meet their reported goals (in terms of turnover, profit and the number of jobs created) and more than half of the firms had tax arrears, the estimated labour taxes paid by these firms were much higher compared to the sum of the grant, thus indicating the positive net impact of grants on the state’s fiscal position.
description: Estonian Discussions on Economic Policy, Vol 18 (2010)
Multi-Modal Mutual Attention and Iterative Interaction for Referring Image Segmentation
Creators: name: Liu, Chang
name: Ding, Henghui
name: Zhang, Yulun
name: Jiang, Xudong
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: We address the problem of referring image segmentation that aims to generate a mask for the object specified by a natural language expression. Many recent works utilize Transformer to extract features for the target object by aggregating the attended visual regions. However, the generic attention mechanism in Transformer only uses the language input for attention weight calculation, which does not explicitly fuse language features in its output. Thus, its output feature is dominated by vision information, which limits the model to comprehensively understand the multi-modal information, and brings uncertainty for the subsequent mask decoder to extract the output mask. To address this issue, we propose Multi-Modal Mutual Attention ($\mathrm{M^3Att}$) and Multi-Modal Mutual Decoder ($\mathrm{M^3Dec}$) that better fuse information from the two input modalities. Based on {$\mathrm{M^3Dec}$}, we further propose Iterative Multi-modal Interaction ($\mathrm{IMI}$) to allow continuous and in-depth interactions between language and vision features. Furthermore, we introduce Language Feature Reconstruction ($\mathrm{LFR}$) to prevent the language information from being lost or distorted in the extracted feature. Extensive experiments show that our proposed approach significantly improves the baseline and outperforms state-of-the-art referring image segmentation methods on RefCOCO series datasets consistently.
description: IEEE TIP
Michael ERLER, Epicurus. An Introduction to his Practical Ethics and Politics
Creators: name: Ullrich, Heiko
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Michael Erler, Epicurus. An Introduction to his Practical Ethics and Poli­tics. Basel: Schwabe 2020, 165 S., CHF 48,00. ISBN: 978-3-7965-4006-6
description: Göttinger Forum für Altertumswissenschaft, Bd. 24 Nr. 1 (2021): Göttinger Forum für Altertumswissenschaft
Manfred KLINKOTT, Das Fundament des Pergamonaltares und die Aufnahme seiner Fassadenfragemente
Creators: name: Quatember, Ursula
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Manfred Klinkott, Das Fundament des Pergamonaltares und die Auf­nahme seiner Fassadenfragemente. Altertümer von Pergamon Bd. 3,3. Ber­lin/Bos­ton: De Gruyter 2020, X + 92 S. + 137 S. mit Bauteilzeichnungen und 7 Beilagen, 13 Abb., EUR 119,95. ISBN: 978-3-11-059814-8
description: Göttinger Forum für Altertumswissenschaft, Bd. 24 Nr. 1 (2021): Göttinger Forum für Altertumswissenschaft
Linear theory of weakly amplified, parallel propagating, transverse temperature anisotropy instabilities in magnetized thermal plasmas
Creators: name: Schlickeiser, R.
name: Skoda, T.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: A rigorous analytical study of the dispersion relations of weakly amplified transverse fluctuations with wave vectors ($\vec{k}\parallel \vec{B}$) parallel to the uniform background magnetic field $\vec{B}$ in an anisotropic bi-Maxwellian magnetized electron-proton plasma is presented. We determine the conditions for which the weakly amplified LH-handed polarized Alfven-proton-cyclotron and RH-handed polarized Alfven-Whistler-electron-cyclotron branches can be excited. The results of our instability study are applied to the observed solar wind magnetic turbulence. The Alfvenic instability diagram explains well the main characteristic properties of the observed solar wind fluctuations. Especially, the observed confinement limits at small parallel plasma beta values are explained.
description: 42 pages, 7 figures
Sozialismus als bäuerliche Zukunft
Creators: name: Luković, Jovica
Publisher: name: Jahrbuch für Geschichte des ländlichen Raumes
Year: 2022

description: The article focuses on the Serbian Union of Agriculturists and adds an additional dimension to the available typology of Agrarianism. The Union’s doctrine represented a distinct agrarian-socialist outlook which was particularly strong in South Eastern Europe. The incorporation of the ‘Group for social and cultural work’ around Dragoljub Jovanović decisively shaped the Union’s ideological profile. He brought in both the results of the social-democratic agrarian debate from the 1890s and the concept of the Russian social agronomist and neo-populist Alexander Chaianov. The intellectual contribution of Jovanović and his group was to draw attention to the social, economic and cultural conditions of the Yugoslav peasantry. In their treatises they avoided traditional tropes such as agro-romanticism and ethno-nationalism, as well as the customary socialist repertoire. Dragoljub Jovanović’s analysis and policy recommendations for the peasantry’s exit from their miserable condition makes him – along with the Romanian Virgil Madgearu – to an archetypical exponent of a south-east European Third Way between Capitalism and Communism.
description: Jahrbuch für Geschichte des ländlichen Raumes, Bd. 7 (2010): Transforming Rural Societies. Agrarian Property and Agrarianism in East Central Europe in the Nineteenth and Twentieth Centuries
PPP-Projekte bei Regionalen Sozial-Wirtschaftlichen Entwicklung.  PPP projektid regionaalses sotsiaalmajanduslikus arengus
Creators: name: Mäeltsemees, Sulev
Publisher: name: MATTIMAR OÜ
Year: 2013
Subjects: Public Private Partnership; PPP-Model; co-operation; New Public Management; economic development; government; capital city; city council; school; dwelling house; rural municipality and city budgets act; borrowing; financial supervision

description: The purpose of this paper is to analyze the legal and economical problems of the PPP-projects (mainly in Tallinn) and the comparative analysis of the PPP-projects in some EU countries. Unfortunately the PPP-projects in Estonia is such a new topic that there have been no scientifically qualifiying publications written about it. Quite many topic-related articles have been published in journalism but the purpose of them has been mainly political. In Estonia (mainly in Tallinn) the PPP-projects have been exercised since year 2000. Since then the PPP-projects have been debated over by the state (Ministry of Finance) and the City of Tallinn about whether the PPPprojects should be counted into the debt obligations of the city or not? According to the Rural Municipality and City Budget Act a rural municipality or city may take loans, on the following conditions, the total amount of unrepaid loans shall not exceed 60 percent 20 per cent of proposed budget revenue for that budgetary year. Until 2008 Tallinn counted the costs of the PPP-projects only as yearly payments to the private sector but not as a loan. Since 2009 the new bookkeeping rules were enacted and the PPP-projects were counted upon the local government dept obligations. Thereat it is relevant to mention that the methodics of the Eurostat don`t calculate PPP-projects as dept obligations of the public sector. Until now the PPPprojects in Estonia have been exercised only for some years and it has been done only for renovation of the social infrastructure objects (schools) or construction (dwelling houses, sport structures). Although the PPP-projects have been planned to be used in development of the technical infrastructures (roads) these plans haven`t been accomplished yet. PPP-projects have been Tallinn-centered and the reason for this is that Tallinn has compared to other cities a lot more potential to administer and finance the complicated projects. More extensive use of the PPP-projects has been obstructed by the lack of the statewide regulations
description: Estonian Discussions on Economic Policy, Vol 18 (2010)
Stabilization of a two-dimensional quantum electron solid in perpendicular magnetic fields
Creators: name: Melnikov, M. Yu.
name: Smirnov, D. G.
name: Shashkin, A. A.
name: Huang, S. -H.
name: Liu, C. W.
name: Kravchenko, S. V.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We find that the double-threshold voltage-current characteristics in the insulating regime in the ultra-clean two-valley two-dimensional electron system in SiGe/Si/SiGe quantum wells are promoted by perpendicular magnetic fields, persisting to an order of magnitude lower voltages and considerably higher electron densities compared to the zero-field case. This observation indicates the perpendicular-magnetic-field stabilization of the quantum electron solid.
description: As published
The effect of social capital on investments: evidence from Europe. Sotsiaalkapitali mõju investeeringutele Euroopa riikide näitel
Creators: name: Parts, Eve
Publisher: name: MATTIMAR OÜ
Year: 2013
Subjects: social capital; economic growth; investments; European countries

description: The purpose of the current paper is to investigate empirically the effect of social capital on investments as a key production factor. Theoretically, investments are expected to be higher in societies where there is more social capital between economic agents. Based on the data from World Values Survey, ten components of social capital are considered as factors of investments. Although the regression results are rather mixed, it can be generalised that components related to trust and norms dominate as predictors of overall investment activity, while networks have some effect only for foreign investments. Additionally, it appeared that the relationship between social capital and investments is similar in democratic Western European countries and Central and Eastern European countries with communist background
description: Estonian Discussions on Economic Policy, Vol 18 (2010)
Face masks impede basic and complex emotion recognition: Variation across the broader autism phenotype
Creators: name: Laycock, Robin
name: Chouinard, Philippe
Publisher: name: La Trobe
Year: 2023
Subjects: classificationCode: 5204
subject: Cognitive and computational psychology
classificationCode: 3904
subject: Specialist studies in education
classificationCode: 5201
subject: Applied and developmental psychology

description: The broader autism phenotype is characterised by atypical face perception. There is little understanding of how face masks―now commonly worn to protect against transmission of COVID-19―might impact face processing across the broader autism phenotype. Neurotypical participants had their autistic traits measured and viewed masked and unmasked faces displaying basic and also complex expressions. Face masks reduced emotion recognition for basic and complex expressions in all participants. Autistic traits were linked to lower face emotion recognition, though this was primarily due to reduced accuracy with basic (masked and unmasked) expressions. Autistic traits were not linked to greater challenges in interpreting the emotions of masked faces.
Oxygen consumption and carbon dioxide elimination during normal and hyperventilated breathing at progressive work rates
Creators: name: Loewen, Henry Rudolf
Publisher: name: University of British Columbia
Year: 2011

description: This study was undertaken to determine and compare the rates of oxygen consumption and carbon dioxide elimination during normal and hyperventilated breathing at progressive work rates. Three subjects stepped at 18, 24, 30, 36 and 40 steps per minute on an eighteen inch bench for a duration of ten minutes or until exhaustion. All exercises were performed inside a 6,900 liter closed circuit respirometer. The volume of each subject obtained from hydrostatic weighings was subtracted from the chamber volume as was the volume of the bench. Net volume was corrected to STPD. The respirometer was equipped with Beckman oxygen and carbon dioxide analyzers, an internal cooling system as well as wet and dry thermocouples on three sides . Oxygen and carbon dioxide concentrations were continuously analyzed and automatically recorded against time. A resting metabolic rate was established prior to each work task. Completion of the exercise was followed by a fifteen minute recovery period. Curves of cumulative oxygen consumption (VO₂) and carbon dioxide elimination (VCO₂) were plotted against time. By determining the gradients of these curves at different points it was possible to plot the corresponding velocity curves [formula omitted]. The acceleration curves [formula omitted] were derived from the velocity curves. An IBM computer program was used to determine the velocity and acceleration values. When compared to normal breathing, hyperventilating at the higher work loads increases the VO₂ and VCO₂ during the early phase of exercise. This is generally followed by decreased VO₂ during the recovery period. There are well defined differences in the derivative curves between normal and hyperventilated breathing. Implications for athletic performance are indicated. Derivative curves of oxygen consumption and carbon dioxide elimination appear to be highly individual. Their use as a fitness criterion is indicated.
Signatures of unstable semiclassical trajectories in tunneling
Creators: name: Levkov, D. G.
name: Panin, A. G.
name: Sibiryakov, S. M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: It was found recently that processes of multidimensional tunneling are generally described at high energies by unstable semiclassical trajectories. We study two observational signatures related to the instability of trajectories. First, we find an additional power-law dependence of the tunneling probability on the semiclassical parameter as compared to the standard case of potential tunneling. The second signature is substantial widening of the probability distribution over final-state quantum numbers. These effects are studied using modified semiclassical technique which incorporates stabilization of the tunneling trajectories. The technique is derived from first principles. We obtain expressions for the inclusive and exclusive tunneling probabilities in the case of unstable semiclassical trajectories. We also investigate the "phase transition" between the cases of stable and unstable trajectories across certain "critical" value of energy. Finally, we derive the relation between the semiclassical probabilities of tunneling from the low-lying and highly excited initial states. This puts on firm ground a conjecture made previously in the semiclassical description of collision-induced tunneling in field theory.
description: Journal version; 48 pages, 16 figures
"What if?" in Probabilistic Logic Programming
Creators: name: Kiesel, Rafael
name: Rückschloß, Kilian
name: Weitkämper, Felix
Publisher: name: arXiv
Year: 2023
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: A ProbLog program is a logic program with facts that only hold with a specified probability. In this contribution we extend this ProbLog language by the ability to answer "What if" queries. Intuitively, a ProbLog program defines a distribution by solving a system of equations in terms of mutually independent predefined Boolean random variables. In the theory of causality, Judea Pearl proposes a counterfactual reasoning for such systems of equations. Based on Pearl's calculus, we provide a procedure for processing these counterfactual queries on ProbLog programs, together with a proof of correctness and a full implementation. Using the latter, we provide insights into the influence of different parameters on the scalability of inference. Finally, we also show that our approach is consistent with CP-logic, i.e. with the causal semantics for logic programs with annotated with disjunctions.
Log-convexity and log-concavity of hypergeometric-like functions
Creators: name: Karp, D.
name: Sitnik, S. M.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 26A51, 33C20, 33C15, 33C05

description: We find sufficient conditions for log-convexity and log-concavity for the functions of the forms $a\mapsto\sum{f_k}(a)_kx^k$, $a\mapsto\sum{f_k}Γ(a+k)x^k$ and $a\mapsto\sum{f_k}x^k/(a)_k$. The most useful examples of such functions are generalized hypergeometric functions. In particular, we generalize the Turán inequality for the confluent hypergeometric function recently proved by Barnard, Gordy and Richards and log-convexity results for the same function recently proved by Baricz. Besides, we establish a reverse inequality which complements naturally the inequality of Barnard, Gordy and Richards. Similar results are established for the Gauss and the generalized hypergeometric functions. A conjecture about monotonicity of a quotient of products of confluent hypergeometric functions is made.
description: 13 pages, no figures
Development of an Obround Polybenzimidazole Nozzle for Cold Gas Dynamic Spray
Creators: name: Croteau, Samuel
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2021
Subjects: subject: Cold spray
subject: Mechanical engineering
subject: FOS: Mechanical engineering
subject: Cold Gas Dynamic Spray
subject: Fluid simulation

description: Technoform, a worldwide manufacturer of polymer window frames and window insulation, needs to fulfill customer performance and aesthetic requirements. To this end, they have opted to use the Cold Gas Dynamic Spray (CGDS) process on an industrial scale to coat extruded polymer parts with a thin layer of aluminum. The CGDS process would be an added step in the production line where it would deposit an aluminum coating after the extrusion step, in a single pass. While commercially available equipment can be utilized for this purpose, it is rather inefficient due to the quantity of nozzles required to fulfill Technoform Bautec Ibérica’s requirement of coating the substrate in a single pass. Multiple nozzles placed side-by-side would be required to coat the entire width of the substrate. The focus of this work was to improve and optimise a prototype initially designed by Technoform Bautec Ibérica and Centerline (Windsor) Ltd. This prototype was designed with an obround shape (12.5 x 2.5 mm), to be wider than axisymmetric nozzles and reduce the number of nozzles needed for this specific application. A combination of computational and experimental methods were used to assess the issues with the tungsten carbide (WC) prototype produced by Technoform and Centerline (Windsor). Alternate injection points for the powder feedstock were tested through simulations to improve the particle distribution at the outlet of the nozzle. It was found that a 15° inlet provided a fuller coverage of particles at the outlet when compared to the original inlet, which was at the 90° position. A new, multi-part prototype was designed to be manufactured from polybenzimidazole (PBI) and to utilize the updated inlet position. The WC nozzle produced a single-pass coating of 6.5 mm in width on an aluminum 6061-T6 substrate, while the PBI prototype produced a 7.5 mm wide coating. Further simulations showed that a dual injection approach could provide a wider coating. The PBI prototype was modified for dual injection and produced a 10.5 mm wide coating. With optimised parameters, a 13.6 mm single-pass coating was produced. Different injection gas flow rates were also tested to produce flatter coatings. A gas flow rate of 6.52x10⁻⁴ kg/s (60 SCFH) produced the most even coating in terms of thickness across the entire width of the deposition. Finally, single-pass coatings were deposited on Technoform’s polyamide substrate. The WC nozzle produced an 8.6 mm coating and the dual injection PBI nozzle produced a 13 mm coating.
GENTRIFICAÇÃO VERDE: EXPLORANDO O CONCEITO PARA O CASO BRASILEIRO
Creators: name: Tamas, Luiza Fernandes
name: Torres, Pedro Henrique Campello
Publisher: name: figshare
Year: 2022
Subjects: Environmental Science

description: Green Gentrification is a term that derives from the concept of Gentrification, coined by Ruth Glass in the 60s, to refer to spatial and social changes in neighborhoods in London, which were previously inhabited by workers and now occupied by the middle class ( Ruth Glass, 1964 Apud Torres et al., 2019). The phenomenon then began to be analyzed and conceived from different perspectives, including the incorporation of the adjective Green, which adds the environmental dimension to the context and showing, as done by Gould and Lewis (2016) and Anguelovski (2015), improvements in environmental quality that can lead to the displacement of former residents. Or the transformation of the uses of the areas. This paper sought to analyze the development of this field of study in Brazil, based on a systematic literature review and 23 works resulting from searches on Google Academic. As a result, it is remarkable that studies in the area, in Brazil, are still recent and have been growing in recent years, coming from diverse and heterogeneous sources, with emphasis on the participation of the areas of Social Sciences and universities in the development of the work. There is also a concentration of publications in the South and Southeast regions, indicating inter-regional disparities.
Muon Spin Rotation Measurement of the Magnetic Field Penetration Depth in Ba(Fe0.93 Co0.07)2 As2 : Evidence for Multiple Superconducting Gaps
Creators: name: Williams, T. J.
name: Aczel, A. A.
name: Baggio-Saitovitch, E.
name: Budko, S. L.
name: Canfield, P. C.
name: Carlo, J. P.
name: Goko, T.
name: Munevar, J.
name: Ni, N.
name: Uemura, Y. J.
name: Yu, W.
name: Luke, G. M.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We have performed transverse field muon spin rotation measurements of single crystals of Ba(Fe$_{0.93}$Co$_{0.07})_2$As$_2$ with the applied magnetic field along the $\hat{c}$ direction. Fourier transforms of the measured spectra reveal an anisotropic lineshape characteristic of an Abrikosov vortex lattice. We have fit the $μ$SRSR spectra to a microscopic model in terms of the penetration depth $λ$ and the Ginzburg-Landau parameter $κ$. We find that as a function of temperature, the penetration depth varies more rapidly than in standard weak coupled BCS theory. For this reason we first fit the temperature dependence to a power law where the power varies from 1.6 to 2.2 as the field changes from 200G to 1000G. Due to the surprisingly strong field dependence of the power and the superfluid density we proceeded to fit the temperature dependence to a two gap model, where the size of the two gaps is field independent. From this model, we obtained gaps of $2Δ_1=3.7k_BT_c$ and $2Δ_2=1.6k_BT_c$, corresponding to roughly 6 meV and 3 meV respectively.
Appendix - Data Analytics methods to measure Service Quality
Creators: name: Gkioka, Georgia
Publisher: name: Zenodo
Year: 2021
Subjects: data analytics
service quality

description: This document contains an extensive analysis of Sentiment Analysis and Topic Modelling methods, tools and accuracy results from the reviewed research works in the context of the paper entitled “Data Analytics methods to measure Service Quality: A systematic review”.
ChatGPT: Vision and Challenges
Creators: name: Gill, Sukhpal Singh
name: Kaur, Rupinder
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computers and Society (cs.CY)
subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: Artificial intelligence (AI) and machine learning have changed the nature of scientific inquiry in recent years. Of these, the development of virtual assistants has accelerated greatly in the past few years, with ChatGPT becoming a prominent AI language model. In this study, we examine the foundations, vision, research challenges of ChatGPT. This article investigates into the background and development of the technology behind it, as well as its popular applications. Moreover, we discuss the advantages of bringing everything together through ChatGPT and Internet of Things (IoT). Further, we speculate on the future of ChatGPT by considering various possibilities for study and development, such as energy-efficiency, cybersecurity, enhancing its applicability to additional technologies (Robotics and Computer Vision), strengthening human-AI communications, and bridging the technological gap. Finally, we discuss the important ethics and current trends of ChatGPT.
Dissipative Processes in the Early Universe: Bulk Viscosity
Creators: name: Tawfik, A.
name: Harko, T.
name: Mansour, H.
name: Wahba, M.
Publisher: name: arXiv
Year: 2009
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this talk, we discuss one of the dissipative processes which likely take place in the Early Universe. We assume that the matter filling the isotropic and homogeneous background is to be described by a relativistic viscous fluid characterized by an ultra-relativistic equation of state and finite bulk viscosity deduced from recent lattice QCD calculations and heavy-ion collisions experiments. We concentrate our treatment to bulk viscosity as one of the essential dissipative processes in the rapidly expanding Early Universe and deduce the dependence of the scale factor and Hubble parameter on the comoving time $t$. We find that both scale factor and Hubble parameter are finite at $t=0$, revering to absence of singularity. We also find that their evolution apparently differs from the one resulting in when assuming that the background matter is an ideal and non-viscous fluid.
description: 8 pages, 2 eps figure, Invited talk given at the 7th international conference on "Modern Problems of Nuclear Physics", 22-25 September 2009, Tashkent-Uzbekistan
Parton Distribution Functions in the Schwinger Model with Tensor Networks
Creators: name: Bañuls, Mari Carmen
name: Cichy, Krzysztof
name: Lin, C. -J. David
name: Schneider, Manuel
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Parton distribution functions (PDFs) describe universal properties of bound states and allow us to calculate scattering amplitudes in processes with large momentum transfer. Calculating PDFs involves the evaluation of matrix elements with a Wilson line in a light-cone direction. In contrast to Monte Carlo methods in Euclidean spacetime, these matrix elements can be directly calculated in Minkowski-space using the Hamiltonian formalism. The necessary spatial- and time-evolution can be efficiently applied using established tensor network methods. We present PDFs in the Schwinger model calculated with matrix product states.
description: Proceedings of the 41st International Symposium on Lattice Field Theory, LATTICE2024, 28th July - 3rd August 2024, University of Liverpool, United Kingdom, Speaker: Manuel Schneider
Recognition of geochemical footprints of mineral systems in the regolith at regional to continental scales
Creators: name: de Caritat, P.
name: Main, P. T.
name: Grunsky, E. C.
name: Mann, A. W.
Publisher: name: Taylor & Francis
Year: 2016
Subjects: subject: Cell Biology
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Computational Biology

description: Understanding the character of Australia's extensive regolith cover is crucial to the continuing success of mineral exploration. We hypothesise that the regolith contains geochemical fingerprints of processes related to the development and preservation of mineral systems at a range of scales. We test this hypothesis by analysing the composition of surface sediments within greenfield regional-scale (southern Thomson Orogen) and continental-scale (Australia) study areas. In the southern Thomson Orogen area, the first principal component (PC1) derived in our study [Ca, Sr, Cu, Mg, Au and Mo at one end; rare earth elements (REEs) and Th at the other] is very similar to the empirical vector used by a local company (enrichment in Sr, Ca and Au concomitant with depletion in REEs) to successfully site exploration drill holes for Cu–Au mineralisation. Mapping of the spatial distribution of PC1 in the region reveals several areas of elevated values and possible mineralisation potential. One of the strongest targets in the PC1 map is located between Brewarrina and Bourke in northern New South Wales. Here, exploration drilling has intersected porphyry Cu–Au mineralisation with up to 1 wt% Cu, 0.1 g/t Au, and 717 ppm Zn. The analysis of a comparable geochemical dataset at the continental scale yields a compositionally similar PC1 (Ca, Sr, Mg, Cu, Au and Mo at one end; REEs and Th at the other) to that of the regional study. Mapping PC1 at the continental scale shows patterns that (1) are spatially compatible with the regional study and (2) reveal several geological regions of elevated values, possibly suggesting an enhanced potential for porphyry Cu–Au mineralisation. These include well-endowed mineral provinces such as the Curnamona and Capricorn regions, but also some greenfield regions such as the Albany-Fraser/western Eucla, western Murray and Eromanga geological regions. We conclude that the geochemical composition of Australia's regolith may hold critical information pertaining to mineralisation within/beneath it.
Matching current observational constraints with nonminimally coupled dark energy
Creators: name: Wolf, William J.
name: Ferreira, Pedro G.
name: García-García, Carlos
Publisher: name: arXiv
Year: 2024
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show that a Universe with a nonminimally coupled scalar field can fit current measurements of the expansion rate of the Universe better than the standard $Λ$-Cold Dark Matter ($Λ$CDM) model or other minimally coupled dark energy models. In particular, the nonminimal coupling in this model allows for the dark energy model to exhibit stable phantom crossing behavior, which seems to be suggested by the constraints on the dark energy equation of state coming from the most recent data. While we find a clear improvement in the goodness of fit for this dark energy model with respect to others that have been considered in the recent literature, using information theoretic criteria, we show that the evidence for it is still inconclusive.
description: Updated to matched published version in PRD
Pinning down the ram-pressure-induced halt of star formation in the Virgo cluster spiral galaxy NGC 4388. A joint inversion of spectroscopic and photometric data
Creators: name: Pappalardo, C.
name: Lancon, A.
name: Vollmer, B.
name: Ocvirk, P.
name: Boissier, S.
name: Boselli, A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In a galaxy cluster, the evolution of spiral galaxies depends on their cluster environment. Ram pressure due to the rapid motion of a spiral galaxy within the hot intracluster medium removes the galaxy's interstellar medium from the outer disk. Once the gas has left the disk, star formation stops. The passive evolution of the stellar populations should be detectable in optical spectroscopy and multi-wavelength photometry. The goal of our study is to recover the stripping age of the Virgo spiral galaxy NGC 4388, i.e. the time elapsed since the halt of star formation in the outer galactic disk using a combined analysis of optical spectra and photometry. We performed VLT FORS2 long-slit spectroscopy of the inner star-forming and outer gas-free disk of NGC 4388. We developed a non-parametric inversion tool that allows us to reconstruct the star formation history of a galaxy from spectroscopy and photometry. The tool was tested on a series of mock data using Monte Carlo simulations. The results from the non-parametric inversion were refined by applying a parametric inversion method. The star formation history of the unperturbed galactic disk is flat. The non-parametric method yields a rapid decline of star formation < 200 Myr ago in the outer disk. The parametric method is not able to distinguish between an instantaneous and a long-lasting star formation truncation. The time since the star formation has dropped by a factor of two from its pre-stripping value is 190 +- 30 Myr. We are able to give a precise stripping age that is consistent with revised dynamical models.
description: 12 pages, 10 figures, accepted for publication in A&A
Flat band separation and robust spin-Berry curvature in bilayer kagome metals
Creators: name: Di Sante, Domenico
name: Bigi, Chiara
name: Eck, Philipp
name: Enzner, Stefan
name: Consiglio, Armando
name: Pokharel, Ganesh
name: Carrara, Pietro
name: Orgiani, Pasquale
name: Polewczyk, Vincent
name: Fujii, Jun
name: King, Phil D. C
name: Vobornik, Ivana
name: Rossi, Giorgio
name: Zeljkovic, Ilija
name: Wilson, Stephen D.
name: Thomale, Ronny
name: Sangiovanni, Giorgio
name: Panaccione, Giancarlo
name: Mazzola, Federico
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Kagome materials have emerged as a setting for emergent electronic phenomena that encompass different aspects of symmetry and topology. It is debated whether the XV$_6$Sn$_6$ kagome family (where X is a rare earth element), a recently discovered family of bilayer kagome metals, hosts a topologically non-trivial ground state resulting from the opening of spin-orbit coupling gaps. These states would carry a finite spin-Berry curvature, and topological surface states. Here, we investigate the spin and electronic structure of the XV$_6$Sn$_6$ kagome family. We obtain evidence for a finite spin-Berry curvature contribution at the center of the Brillouin zone, where the nearly flat band detaches from the dispersing Dirac band because of spin-orbit coupling. In addition, the spin-Berry curvature is further investigated in the charge density wave regime of ScV$_6$Sn$_6$, and it is found to be robust against the onset of the temperature-driven ordered phase. Utilizing the sensitivity of angle resolved photoemission spectroscopy to the spin and orbital angular momentum, our work unveils the spin-Berry curvature of topological kagome metals, and helps to define its spectroscopic fingerprint.
description: 21 pages, 4 figures
On some separation axioms
Creators: name: Mah, Peter Fritz
Publisher: name: University of British Columbia
Year: 2011

description: Relations between pairs of separation axioms are considered. Given two separation axioms, it is investigated whether or not a topological space having the property of one of the separation axioms has the property of the other. Eighteen separation axioms are considered and the relation between the members of pairs of separation axioms is determined in every possible case. That is, with each pair of separation axioms there is associated a theorem showing the relative strengths of the members or an example showing their relative independence. As a secondary interest, some characterizations of most of the eighteen separation axioms are given. Also some necessary conditions for normal spaces and completely normal spaces are generalized.
MPEC 2023-X290 : 2023 XL13
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 XL13

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Boundary layer stability analysis using the nonlinear One-Way Navier-Stokes approach
Creators: name: Sleeman, Michael K.
name: Lakebrink, Matthew T.
name: Colonius, Tim
Publisher: name: arXiv
Year: 2024
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We extend the One-Way Navier Stokes (OWNS) approach to support nonlinear interactions between waves of different frequencies, which will enable nonlinear analysis of instability and transition. In OWNS, the linearized Navier-Stokes equations are parabolized and solved in the frequency domain as a spatial initial-value (marching) problem. OWNS yields a reduced computational cost compared to global solvers, while also conferring numerous advantages over the parabolized stability equations (PSE), despite its higher computational cost relative to PSE, that we seek to extend to nonlinear analysis. We validate the nonlinear OWNS (NOWNS) method by examining nonlinear evolution of two- and three-dimensional disturbances in a low-speed Blasius boundary layer compared to nonlinear PSE (NPSE) and direct numerical simulation (DNS) results from the literature. We demonstrate that NOWNS can be used to simulate flows involve blowing/suction strips, is more robust to numerical noise, and converges for stronger nonlinearities, as compared to NPSE.
Algorithmic Aspects of Several Data Transfer Service Optimization Problems
Creators: name: Andreica, Mugurel Ionut
name: Pargaru, Ion
name: Ionescu, Florin
name: Andreica, Cristina Teodora
Publisher: name: arXiv
Year: 2009
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences
subject: F.2.2; G.2.2; I.2.8

description: Optimized data transfer services are highly demanded nowadays, due to the large amounts of data which are frequently being produced and accessed. In this paper we consider several data transfer service optimization problems (optimal server location in path networks, optimal packet sequencing and minimum makespan packet scheduling), for which we provide novel algorithmic solutions.
description: Proceedings of the International Symposium on Sustainable Development in Conditions of Economic Instability, Satu Mare, 26-27 June, 2009
Group matrices
Creators: name: Iwata, William Takashi
Publisher: name: University of British Columbia
Year: 2011

description: A new proof is given of Newman and Taussky's result: if A is a unimodular integral n x n matrix such that A′A is a circulant, then A = QC where Q is a generalized permutation matrix and C is a circulant. A similar result is proved for unimodular integral skew circulants. Certain additional new results are obtained, the most interesting of which are: 1) Given any nonsingular group matrix A there exist unique real group matrices U and H such that U is orthogonal and H is positive definite and A = UH; 2) If A is any unimodular integral circulant, then integers k and s exist such that A′ = P(k)A and P(s)A is symmetric, where P is the companion matrix of the polynomial xⁿ-1. Finally, all the n x n positive definite integral and unimodular skew circulants are determined for values of n ≤ 6: they are shown to be trivial for n = 1,2,3 and are explicitly described for n = 4,5,6.
Energy hub optimization framework based on open-source
Creators: name: Groissböck, Markus
Publisher: name: Zenodo
Year: 2020
Subjects: energy hub
open-source
multi-modal energy system design

description: This deposit will contain the released framework once ready for release. The presentation held at Smart-Energy-Systems 2020 as well as a supplementary list of assessed Python packages and snippets is available already.