cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
What is Quantum? Unifying Its Micro-Physical and Structural Appearance
Creators: name: Aerts, Diederik
name: Sozzo, Sandro
Publisher: name: arXiv
Year: 2014
Subjects: subject: History and Philosophy of Physics (physics.hist-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We can recognize two modes in which 'quantum appears' in macro domains: (i) a 'micro-physical appearance', where quantum laws are assumed to be universal and they are transferred from the micro to the macro level if suitable 'quantum coherence' conditions (e.g., very low temperatures) are realized, (ii) a 'structural appearance', where no hypothesis is made on the validity of quantum laws at a micro level, while genuine quantum aspects are detected at a structural-modeling level. In this paper, we inquire into the connections between the two appearances. We put forward the explanatory hypothesis that, 'the appearance of quantum in both cases' is due to 'the existence of a specific form of organisation, which has the capacity to cope with random perturbations that would destroy this organisation when not coped with'. We analyse how 'organisation of matter', 'organisation of life', and 'organisation of culture', play this role each in their specific domain of application, point out the importance of evolution in this respect, and put forward how our analysis sheds new light on 'what quantum is'.
description: 10 pages
title: Inflation and the personal distribution on fincome in Portugal
Creators: name: Dos Santos, Jorge Henriques
Publisher: name: University of Kent
Year: 2023

description: This thesis is about differential inflation in Portugal during the period 1971-81 and its influence on the personal distribution of income. The analysis is carried out separately for four regions, using different commodity price information in each of them. Price indices are computed for each of the 15,914 households of the 1973/74 Household Expenditure Survey, and their distributions analysed. Cost-of-living indices are calculated from the estimated parameters of the linear Expenditure System, and in order to characterize the personal income distributions, several empirical equivalence scales are computed. The results emphasize the inadequacy of a single Consumer Price Index (CPl) to represent the experienced rates of inflation of all households in each of the regions. As a rule we find a significant, Indirect correlation between the rate of inflation and the household's income. The existence of different commodity price information for each region is of considerable importance in explaining the contrasting differential inflation between some of the regions.
title: Sustaining China's coastal resources: Recommendations to improve the state of the coasts in Hainan
title: Sustaining China's coastal resources: Recommendations to improve the state of the coasts in Hainan
Creators: name: Zhanga, Jialin
name: Jennerjahn, Tim
name: Wang, Daoru
name: Diao, Xiaoping
name: Rixen, Tim
name: Nordhau, Inga
name: Zhao, Hongwei
name: Labrenz, Matthias
name: Luo, Zhuhua
name: Pohlmann, Thomas
name: Chen, Jianfang
name: Xu, Dongfeng
name: Drews, Marco
name: Herbeck, Lucia
name: Thomsen, Esther
name: Dsikowitzky, Larissa
name: Schwarzbauer, Jan
name: Xiang, Nan
name: Li, Ping
name: Leibniz Centre For Tropical Marine Research
Publisher: name: Leibniz Centre for Tropical Marine Research (ZMT)
Year: 2020

description: This policy brief summarizes the major findings of a long-term Sino-German research collaborative and presents recommendations for a sustainable management of Hainan's coastal ecosystems. They are derived from the newly acquired understanding of the ecosystem structure and functioning under the pressure of anthropogenic environmental change as well as of climate change. Coastal ecosystem health and the supply of ecosystem services, hence the potential of natural resources, are severely threatened along the Hainan coast.
Einfluss von interaktiven Lernvideos auf die Entwicklung von Grundvorstellungen der Multiplikation
Creators: name: Wefers, Juliane
Publisher: name: Gesellschaft für Didaktik der Mathematik
Year: 2023
Subjects: subject: Interaktive
subject: Lernvideos
subject: Grundschule
subject: Arithmetik
subject: Digitalisierung & Mathematik
subject: 510

description: Dieser Beitrag beschäftigt sich mit der Frage, welchen Einfluss interaktive Lernvideos auf den Lernerfolg von Kindern haben können und welche interaktiven Elemente der Videos von den Kindern individuell genutzt werden. Thematisch geht es um Grundvorstellungen der Multiplikation.
Micro-transition cascades to percolation
Creators: name: Chen, Wei
name: Schröder, Malte
name: D'Souza, Raissa M.
name: Sornette, Didier
name: Nagler, Jan
Publisher: name: arXiv
Year: 2014
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We report the discovery of a discrete hierarchy of micro-transitions occurring in models of continuous and discontinuous percolation. The precursory micro-transitions allow us to target almost deterministically the location of the transition point to global connectivity. This extends to the class of intrinsically stochastic processes the possibility to use warning signals anticipating phase transitions in complex systems.
description: 5 pages, 4 figures (main text) + 14 figures and 8 figures (supplementary materials). Accepted for publication by Physical Review Letters
ANALYSE D'IMPACT DE LA MUTUELLE DE SANTE SUR L'ACCES AUX SOINS DES FAMILLES VULNERABLES FINANCIEREMENT CAS DE AFAFi-ANTANANARIVO-MADAGASCAR
Creators: name: RANAIVOSAONA Toky Lalaina
name: RAKOTO DAVID Olivaniaina
Publisher: name: Zenodo
Year: 2023

description: Dans le contexte actuel ou la tendance est déjà le « financement de la santé numérique » dans le monde, Madagascar est encore sur la question de financement de santé pour améliorer l'accès aux soins, la digitalisation de la santé est encore loin. C'est la raison de notre recherche qui porte sur l'impact de la mutuelle santé «AFAFi» à Antananarivo Atsimondrano de 2013 à 2016. On analyse comment cette mutuelle répond aux particularités du marché de la santé. L'objectif est de comprendre l'importance de la mutuelle pour améliorer l'accès aux soins. L'article utilise l'« Analyse Coût-Efficacité» pour évaluer son impact. L'hypothèse est que l'implantation d'une mutuelle de santé améliore l'accès aux soins. Les données sont collectées auprès de la mutuelle «AFAFi» et du ministère de la santé publique pour cette analyse. Les résultats mettent en avant le lien entre mutuelle de santé et accès aux soins, défendant ainsi la promotion de la mutuelle comme solution à l'accès aux soins et au financement de la santé.
title: 中国沿海自然资源的可持续利用与发展：如何更好的保护海南的海岸带生态环境
title: Sustaining China's coastal resources: Recommendations to improve the state of the coasts in Hainan
Creators: name: Zhanga, Jialin
name: Jennerjahn, Tim
name: Wang, Daoru
name: Diao, Xiaoping
name: Rixen, Tim
name: Nordhau, Inga
name: Zhao, Hongwei
name: Labrenz, Matthias
name: Luo, Zhuhua
name: Pohlmann, Thomas
name: Chen, Jianfang
name: Xu, Dongfeng
name: Drews, Marco
name: Herbeck, Lucia
name: Thomsen, Esther
name: Dsikowitzky, Larissa
name: Schwarzbauer, Jan
name: Xiang, Nan
name: Li, Ping
name: Leibniz Centre For Tropical Marine Research
Publisher: name: Leibniz Centre for Tropical Marine Research (ZMT)
Year: 2020

description: 这份政策简报以中德合作研究项目成果为基础，分析总结了海南岛热带海岸带生态系统面临的主要威胁及环境响应，并提出了相应可持续管理的建议。 这份报告涵盖了目前在人类活动干扰和气候变化的压力下我们对生态系统结构和功能的最新理解。海南海岸带生态系统的健康和服务供给功能，即自然资源的潜力，已经受到了严重的威胁。
Global Researcher Attitudes to Societal Impact: SDG3
Creators: name: Lucraft, Mithu
name: Frisch, Lucy
name: Dicks, Rob
name: Jagtap, Nikhil
name: Stuart, David
name: Penny, Dan
Publisher: name: Zenodo
Year: 2020
Subjects: Sustainable Development Goals
SDG
SDG3
good health and well-being
societal impact

description: An individual profile on the behaviours of researchers with a focus on SDG 3.
The high efficiency jets magnetically accelerated from a thin disk in powerful lobe-dominated FRII radio galaxies
Creators: name: Li, Shuang-Liang
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: A maximum jet efficiency line $R\sim 25$ ($R=L_{\rm jet}/L_{\rm bol}$), found in FRII radio galaxies by Fernandes et al., was extended to cover the full range of jet power by Punsly. Recent general relativistic magnetohydrodynamic (GRMHD) simulations on jet formation mainly focused on the enhancement of jet power. In this work, we suggest that the jet efficiency could be very high even for conventional jet power if the radiative efficiency of disk were much smaller. We adopt the model of a thin disk with magnetically driven winds to investigate the observational high efficiency jets in FRII radio galaxies. It is found that the structure of a thin disk can be significantly altered by the feedback of winds. The temperature of disk gradually decreases with increasing magnetic field; the disk density, surface density and pressure also change enormously. The lower temperature and higher surface density in inner disk result in the rapid decrease of radiative efficiency. Thus, the jet efficiency is greatly improved even the jet power is conventional. Our results can explain the observations quite well. A theoretical maximum jet efficiency $R \sim 1000$ suggested by our calculations is large enough to explain all the high jet efficiency in observations even considering the episodic activity of jets.
description: 6 pages, 7 figures, accepted for publication in ApJ
Замість вступу.
Creators: name: Томашевський, Андрій
Publisher: name: figshare
Year: 2020
Subjects: Archaeology

description: Томашевський, А. П. 2017. Замість вступу. Археологія і давня історія України, 4 (25). Дослідження археологічної спадщини Східної Волині (до 120-річчя з дня народження Ф. А. Козубовського), с. 7–10
Raman scattering investigation of superconducting Ba$_{2}$Ti$_{2}$Fe$_{2}$As$_{4}$O
Creators: name: Wu, S. -F.
name: Richard, P.
name: Zhang, W. -L.
name: Lian, C. -S.
name: Sun, Y. -L.
name: Cao, G. -H.
name: Wang, J. -T.
name: Ding, H.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We have performed polarized Raman scattering measurements on the newly discovered superconductor Ba$_{2}$Ti$_{2}$Fe$_{2}$As$_{4}$O$_{2}$ ($T_c = 21$ K). We observe seven out of eight Raman active modes, with frequencies in good accordance with first-principle calculations. The phonon spectra suggest neither strong electron-phonon nor spin-phonon coupling and vary only slightly with temperature, except for one E$_g$ mode associated with large displacements of As atoms near the Ti$_2$O planes. We also identify a small anomaly around 125 K in the linewidth of a A$_{1g}$ mode involving the same As atoms. Our results suggest that the transition at 125 K is most likely driven by electronic interactions taking place in the Ti$_2$O planes.
description: 5 pages, 3 figures, 1 table
An empirical study on mathematical thinking of first-year university students in Chile
Creators: name: Peters, Bastián
Publisher: name: Gesellschaft für Didaktik der Mathematik
Year: 2023
Subjects: subject: Transition
subject: Chile
subject: Maths University
subject: Hochschule
subject: Algebra
subject: 510

description: This paper presents a brief contextualization of the educational system in Chile, identifying certain problems of education and specifically with mathematics in students who are in the process of transition from high school to university. Then, the main ideas that constitute the concept of Grundvorstellungen as a didactic discipline are presented. This study aims to develop a didactic analysis oriented to the mathematical thinking that students have about contents seen at school. For this purpose, a research design is presented that will investigate a group of first-year students from two private Chilean universities belonging to engineering careers.
TinyHAR: A Lightweight Deep Learning Model Designed for Human Activity Recognition
Creators: name: Zhou, Yexu
name: Zhao, Haibin
name: Huang, Yiran
name: Hefenbrock, Michael
name: Riedel, Till
name: Beigl, Michael
Publisher: name: Association for Computing Machinery (ACM)
Year: 2022
Subjects: human activity recognition
time series processing
lightweight deep learning model

description: Deep learning models have shown excellent performance in human activity recognition tasks. However, these models typically require large amounts of computational resources, which makes them inefficient to deploy on edge devices. Furthermore, the superior performance of deep learning models relies heavily on the availability of large datasets to avoid over-fitting. However, the expensive efforts for labeling limits the amount of datasets. We address both challenges by designing a more lightweight model, called TinyHAR. TinyHAR is designed specifically for human activity recognition employing different saliency of multi modalities, multimodal collaboration, and temporal information extraction. Initial experimental results show that TinyHAR is several times smaller and often meets or even surpasses the performance of DeepConvLSTM, a state-of-the-art human activity recognition model.
Iron K$α$ emission in type-I and type-II Active Galactic Nuclei
Creators: name: Ricci, Claudio
name: Ueda, Yoshihiro
name: Paltani, Stephane
name: Ichikawa, Kohei
name: Gandhi, Poshak
name: Awaki, Hisamitsu
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The narrow Fe K$α$ line is one of the main signatures of the reprocessing of X-ray radiation from the material surrounding supermassive black holes, and it has been found to be omnipresent in the X-ray spectra of active galactic nuclei (AGN). In this work we study the characteristics of the narrow Fe K$α$ line in different types of AGN. Using the results of a large Suzaku study we find that Seyfert 2s have on average lower Fe K$α$ luminosities than Seyfert 1s for the same 10-50 keV continuum luminosity. Simulating dummy Sy1s and Sy2s populations using physical torus models of X-ray reflected emission, we find that this difference can be explained by means of different average inclination angles with respect to the torus, as predicted by the unified model. Alternative explanations include differences in the intensities of Compton humps or in the photon index distributions. We show that the ratio between the flux of the broad and narrow Fe K$α$ line in the 6.35-6.45 keV range depends on the torus geometry considered, and is on average $<25\%$ and $<15\%$ for type I and type II AGN, respectively. We find evidence of absorption of the narrow Fe K$α$ line flux in Compton-thick AGN, which suggests that part of the reflecting material is obscured. We estimate that on average in obscured AGN the reflected radiation from neutral material is seen through a column density which is 1/4 of that absorbing the primary X-ray emission. This should be taken into account in synthesis models of the CXB and when studying the luminosity function of heavily obscured AGN. We detect the first evidence of the X-ray Baldwin effect in Seyfert 2s, with the same slope as that found for Seyfert 1s, which suggests that the mechanism responsible for the decrease of the equivalent width with the continuum luminosity is the same in the two classes of objects.
description: MNRAS in press - 12 pages, 9 figures, 3 tables
Improving Human Activity Recognition Models by Learnable Sparse Wavelet Layer
Creators: name: Zhao, Haibin
name: Zhou, Yexu
name: Riedel, Till
name: Hefenbrock, Michael
name: Beigl, Michael
Publisher: name: Association for Computing Machinery (ACM)
Year: 2022
Subjects: human activity recognition
learnable filters
wavelet analysis

description: Modern machine learning algorithms for human activity recognition based on artificial neural networks often require a large amount of labelled training data to generalize between human subjects and training contexts. Large degrees of freedom make them susceptible to overfitting and often computationally intensive to implement on portable hardware. In this work, we introduce wavelet-based learnable filters as a feature extraction layer that greatly improves the generalization capability of the detector model. Our evaluations on six benchmark datasets show significant improvements in macro $F_1$ score when our wavelet-based learnable filter layer is prepended to three state-of-the-art human activity recognition models. As a side effect, in many cases we could drastically reduce the required model size to achieve competitive performance on the benchmark dataset, which is an important requirement for use in wearable computing.
Plasmonic amplification and suppression in nanowaveguide coupled to gain-assisted high-quality plasmon resonances
Creators: name: Im, Song-Jin
name: Ho, Gum-Song
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We theoretically study transmission in nanowaveguide coupled to high-quality plasmon resonances for which the metal loss is overcompensated by gain. The on-resonance transmission can vary widely from lower than --20dB to higher than 20dB for a range of gain coefficient. A reversible transition between the high-quality amplification and the suppression can be induced by a quite small change of gain coefficient for a moderately increased distance between the waveguide and the resonator. It is expected that in practice a small change of gain coefficient can be made by flexibly controlling pumping rate or utilizing nonlinear gain. Additionally, based on the frequency-dependant model for gain-transition susceptibility, it is shown that the wide variation of the on-resonance transmission can also be observed for defferent detuning of the gain-transition line-center. Such a widely controllable on-resonance transmission is promising for applications such as well-controlled lumped amplification of surface plasmon-polariton as well as plasmonic switching.
description: submitted to Laser Physics Letters
E-RIHS PP D7.2 E-RIHS Training strategy
Creators: name: Strlic, Matija
name: Buchczky, Magdalena
name: Heritage, Alison
name: Liang, Haida
name: Ropret, Polonca
name: Vopálenský, Michal
Publisher: name: Zenodo
Year: 2020
Subjects: Heritage Science, Training, Education

description: This document constitutes an outcome of the WP7 (E-RIHS Academy) activities. The E-RIHS Education and Training Strategy (Deliverable 7.2) reports the results of the joint efforts of the E-RIHS PP Task 7.2, 7.3 and 7.4 members, led by UCL. In the preparation process, we have also consulted European and national E-RIHS stakeholders, as well as international partners. The purpose of the E-RIHS Education and Training Strategy is to set out skills development priorities, set out key areas of training and delivery channels as well as ensure optimum use of available resources for training and strengthen the capacity of those responsible for their use and management within the European Research Infrastructure for Heritage Science. The Strategy presented below consists of the following elements: The context in which this strategy has been shaped The key strategic objectives for E-RIHS educational and training activities A framework strategic approach to guide E-RIHS decision-making about establishing or reinforcing appropriate training activities and programmes at international, and national levels of the E-RIHS community A training offer, designed in accord with the strategic approach, and in response to the particular education and training needs identified by the need's assessment, presented in the E-RIHS Education and Training Needs report (Deliverable 7.1) Resource and material requirements for the realisation of the overall objectives of the E-RIHS Education and Training Strategy Measuring progress on realising the strategy
Einsatz digitaler Medien im Unterricht als Teil der Lehramtsausbildung
Creators: name: Schenk, Lea
Publisher: name: Gesellschaft für Didaktik der Mathematik
Year: 2023
Subjects: subject: Digitalbasierte Lernkontexte
subject: Digitalkompetenz
subject: Lehrerbildung
subject: 510

description: Um durch digitale Medien verbesserte Lernumgebungen zu schaffen, müssen Lehrkräfte nicht nur über inhaltliches Wissen (CK), technologisches Wissen (TK) und pädagogisches Wissen (PK) verfügen, sondern auch in der Lage sein, diese miteinander in Einklang zu bringen (vgl. TPACK-Modell, Mishra & Koehler 2006). Damit bereits angehende Lehrkräfte dazu befähigt werden diese drei Wissensbereiche zu kombinieren, wurde das Seminar „Digitalbasierte Lernkontexte des Mathematikunterrichts“ konzipiert. Die Seminaridee basiert auf dem design based research approach (z.B. Bakker & Eerde 2015) und auf learning technology by design (Mishra & Koehler 2006). Die Studierenden entwickeln, erproben, reflektieren und präsentieren dort in Kleingruppen digitalbasierte Schülerworkshops zu relevanten, authentischen Anwendungen der Mathematik. Dabei werden sie kontinuierlich von Lehrpersonen begleitet und durch Instruktion und Anregung zur Reflektion und Diskussion unterstützt.
Translations and Open Science: Translation as a Collaborative Practice at the Heart of Open Science
Creators: name: Fiorini, Susanna
Publisher: name: Zenodo
Year: 2023
Subjects: Open Science
translation
scholarly publishing
collaboration

description: When it comes to multilingual dissemination of research, translation may be seen as one of the easiest solutions. Yet, translation in the SSH is a complex practice in reality: various highly specialised profiles need to be involved (authors, translators, researchers, editors), requiring resources that publishers and universities do not always have. It may thus seem that there are more challenges than opportunities in translating scholarly publications. But what if it is possible to mutualise human skills, language resources and translation technology in a single collaborative translation environment? What if, instead of being a challenge, translation becomes a practice to foster collaboration in the scientific community? The Translations and Open Science project explores translation as one possible way to disseminate research in different languages, with a focus on translation technology that can be used to optimise and mutualise processes, resources and tools. The goal is to establish a scientific translation service combining human skills and specialised translation technologies, in particular machine translation engines, corpora and vocabularies, to support a collaborative, human-centred translation process. The service is intended for different scenarios: researchers in need of support to write or translate their results, publishers planning to translate scientific works, readers submitting a translation suggestion for a scientific paper, etc. Imagined as an open and modular digital environment, the service will foster collaboration between international publishers, researchers and translators, thus allowing not only the optimisation of the translation process but also promoting the interaction between different actors of scholarly communication in an unprecedented way.
description: The TRIPLE project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 863420 Disclaimer. The content of this publication is the sole responsibility of the author and can in no way be taken to reflect the views of the European Commission. The European Commission is not responsible for any use that may be made of the information it contains.
Der userfreundliche Proportionalitätsrechner PROPORTIONATE
Creators: name: Ronk, Pit
name: Perucca, Antonella
Publisher: name: Gesellschaft für Didaktik der Mathematik
Year: 2023
Subjects: subject: Proportionalität
subject: Dyskalkulie
subject: online tool
subject: public domain
subject: 510

description: Wir planen ein non-commercial “Tool“, um Menschen dabei zu helfen, mit Proportionen umzugehen. Für wichtige Berechnungen (z.B. die Berechnung der Insulindosis) ist es unvermeidbar, dass jede*r Benutzer*in personalisierte Szenarien / Vorgehensweisen im Tool integriert hat. Das Tool kann Umwandlungen zwischen Maßeinheiten vornehmen, die Berechnungen von Gesamtpreisen oder Rabatten, und im Prinzip jede Anwendung bezüglich Proportionen, die im Alltag hilft. Das Tool könnte auch z.B. von Laborfachkräften benutzt werden. Darüber hinaus kann das Tool Schüler*innen helfen, Proportionen besser zu verstehen (z.B. die Milch pro Kuh pro Tag).
Fermi-Aufgaben mit dem digitalen Forscherheft bearbeiten
Creators: name: Schäfer, Christoph
Publisher: name: Gesellschaft für Didaktik der Mathematik
Year: 2023
Subjects: subject: Fermi-Aufgaben
subject: digitales Forscherheft
subject: Aushandlungsprozesse
subject: Begründungsprozesse
subject: digitale Medien
subject: 510

description: In der mathematikdidaktischen Forschung gibt es verschiedene Begriffe für die Dokumentation des eigenen Lernprozesses durch die Lernenden, z.B. Lerntagebuch, Reisetagebuch oder Forscherheft. Durch den Einsatz digitaler Werkzeuge lassen sich diese Konzepte aufgreifen und digital erweitern, um bestimmte medienspezifische Potenziale dieser Tools nutzen zu können. Gallin and Ruf (1998) beschreiben beispielsweise eine digitale Umsetzung des Reisetagebuchs mithilfe eines Textverarbeitungsprogrammes und Steffen (o.J.) entwickelte ein digitales Forscherheft zum Aufgabenformat Mal-Plus-Haus unter Verwendung einer Tabellenkalkulationssoftware. Im Rahmen des diesem Beitrag zugrundeliegenden Forschungsvorhabens geschieht die Umsetzung des Forscherheftkonzeptes durch den Einsatz der i- Pad-App Book Creator (Tools for Schools Limited, 2011). Mithilfe dieses Tools können multimediale Bücher durch die Einbindung von z.B. Bildern, Videos, Texten, Freihandzeichnungen oder Sprachaufnahmen erstellt werden. Die Potenziale des digitalen Forscherhefts sind dabei vor allem die leichte Veränderbarkeit, Interaktivität sowie das mündliche Darstellen von Mathematik (Schäfer & Brandt, 2022).
Súčasný stav politík otvorenej vedy vo svete a na Slovensku
Creators: name: Harvát, Matej
Publisher: name: Zenodo
Year: 2023
Subjects: Open Science Policies, Open Science, Open Access, Scholarly Communication

description: Prezentácia z webinára https://otvorenaveda.cvtisr.sk/7-3-2023-sucasny-stav-politik-otvorenej-vedy-vo-svete-a-na-slovensku/
Strong-Field Scattering of Two Black Holes: Numerics Versus Analytics
Creators: name: Damour, Thibault
name: Guercilena, Federico
name: Hinder, Ian
name: Hopper, Seth
name: Nagar, Alessandro
name: Rezzolla, Luciano
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We probe the gravitational interaction of two black holes in the strong-field regime by computing the scattering angle $χ$ of hyperbolic-like, close binary-black-hole encounters as a function of the impact parameter. The fully general-relativistic result from numerical relativity is compared to two analytic approximations: post-Newtonian theory and the effective-one-body formalism. As the impact parameter decreases, so that black holes pass within a few times their Schwarzschild radii, we find that the post-Newtonian prediction becomes quite inaccurate, while the effective-one-body one keeps showing a good agreement with numerical results. Because we have explored a regime which is very different from the one considered so far with binaries in quasi-circular orbits, our results open a new avenue to improve analytic representations of the general-relativistic two-body Hamiltonian.
description: 5 pages, 3 figures. Submitted to Physical Review Letters
The Tunka detector complex: from cosmic-ray to gamma-ray astronomy
Creators: name: Budnev, N
name: Astapov, I
name: Barbashina, N
name: Bogdanov, A
name: Bogorodskii, D
name: Boreyko, V
name: Büker, M
name: Brückner, M
name: Chiavassa, A
name: Chvalaev, O
name: Gress, O
name: Gress, T
name: Dyachok, A
name: Epimakhov, S
name: Gafatov, A
name: Gorbunov, N
name: Grebenyuk, V
name: Grinuk, A
name: Haungs, A
name: Hiller, R
name: Horns, D
name: Huege, T
name: Ivanova, A
name: Kalinin, A
name: Karpov, N
name: Kalmykov, N
name: Kazarina, Y
name: Kindin, V
name: Kirichkov, N
name: Kiryuhin, S
name: Kleifges, M
name: Kokoulin, R
name: Komponiest, K
name: Konstantinov, A
name: Konstantinov, E
name: Korobchenko, A
name: Korosteleva, E
name: Kostunin, D
name: Kozhin, V
name: Krömer, O
name: Kunnas, M
name: Kuzmichev, L
name: Lenok, V
name: Lubsandorzhiev, B
name: Lubsandorzhiev, N
name: Mirgazov, R
name: Mirzoyan, R
name: Monkhoev, R
name: Nachtigall, R
name: Pakhorukov, A
name: Panasyuk, M
name: Pankov, L
name: Petrukhin, A
name: Platonov, V
name: Poleschuk, V
name: Popova, E
name: Porelli, A
name: Prosin, V
name: Ptuskin, V
name: Rubtsov, G
name: Rühle, C
name: Samoliga, V
name: Satunin, P
name: Savinov, V
name: Saunkin, A
name: Schröder, F
name: Semeney, Yu
name: Shaibonov, B
name: Silaev, A
name: Silaev, A
name: Skurikhin, A
name: Slucka, V
name: Spiering, C
name: Sveshnikova, L
name: Tabolenko, V
name: Tkachenko, A
name: Tkachev, L
name: Tluczykont, M
name: Voronin, D
name: Wischnewski, R
name: Zagorodnikov, A
name: Zurbanov, V
name: Yashin, I
Publisher: name: Humboldt-Universität zu Berlin
Year: 2015
Subjects: subject: 520 Astronomie und zugeordnete Wissenschaften

description: TAIGA stands for "Tunka Advanced Instrument for cosmic ray physics and Gamma Astronomy" and is a project to build a complex, hybrid detector system for ground-based gamma- ray astronomy from a few TeV to several PeV, and for cosmic-ray studies from 100 TeV to 1 EeV. TAIGA will search for "PeVatrons" (ultra-high energy gamma-ray sources) and measure the composition and spectrum of cosmic rays in the knee region (100 TeV - 10 PeV) with good energy resolution and high statistics. TAIGA will include Tunka-HiSCORE (an array of wide-angle air Cherenkov stations), an array of Imaging Atmospheric Cherenkov Telescopes, an array of particle detectors, both on the surface and underground, and the TUNKA-133 air Cherenkov array.
Schülerstrategien beim Schätzen von Flächeninhalten
Creators: name: Schubert, Melanie
name: Ludwig, Matthias
Publisher: name: Gesellschaft für Didaktik der Mathematik
Year: 2023
Subjects: subject: Schätzen
subject: Strategien
subject: Flächen
subject: Promotionsprojekt
subject: 510

description: Der Prozess des Schätzens ist ein komplexes Gefüge unterschiedlicher Faktoren. So definiert Winter (1992) das Schätzen als „kompliziertes Zusammenspiel von Wahrnehmen, Erinnern, Inbeziehungsetzen, Runden und Rechnen“ (ebd., S. 19). Viele Studien haben das Schätzen von Längen und Volumina untersucht, jedoch ist die Forschungslage für das Schätzen von Flächeninhalten gering. Heinze et al. (2018) klassifizieren für das Längenschätzen sieben Situationen, in denen ein Schätzobjekt präsentiert werden kann (z.B. berührbar oder nicht). Eine Erweiterung dieser Klassifizierung auf Flächen mittels der Formunterscheidung (z.B. rechteckig, kreisförmig, krummlinig begrenzt) fand derzeitig in der Forschung noch nicht statt. Neben der Schätzsituation ist bei einem Schätzprozess auch die verwendete Strategie interessant. Hildreth (1983) beschreibt u.a. drei Strategien für das Schätzen von Flächengrößen: Eine Fläche kann zerlegt/zusammengesetzt, eingeschachtelt oder neu angeordnet werden.
Палеолітичні стоянки Овруцького кряжу
Creators: name: Леонід Залізняк
name: Томашевський, Андрій
name: С.В. Переверзев
name: Павленко С.В.
name: Хоптинець І.О.
name: Андрій Сорокун
Publisher: name: figshare
Year: 2020
Subjects: Archaeology

description: Залізняк, Л. Л., Томашевський, А. П., Переверзєв, С. В., Павленко, С. В., Хоптинець, І. М., Сорокун, А. А. 2018. Палеолітичні стоянки Овруцького кряжу. В: Болтрик, Ю. В. (ред.). Археологічні дослідження в Україні 2016. Київ: ІА НАНУ, с. 20–22
title: Sustainably managing fisheries in water reservoirs: A case from Northern Ghana
title: Sustainably managing fisheries in water reservoirs: A case from Northern Ghana
Creators: name: Abobi, Seth Mensah
name: Wolff, Matthias
name: Leibniz Centre For Tropical Marine Research
Publisher: name: Leibniz Centre for Tropical Marine Research (ZMT)
Year: 2020

description: This policy brief is based on a study of the three reservoirs Tono, Bontanga and Golinga in northern Ghana. We provide a complete description and analysis of the food web dynamics and fisheries productivity in our publications (see References). Moreover, we developed an empirical model to estimate the harvest potential of reservoirs in West Africa. Here, we present the main findings and derive recommendations on how to facilitate the sustainable management of the reservoirs� fisheries.
Dialogisches Lernen zur Verknüpfung von Universitäts- und Schulalgebra
Creators: name: Moors, Felix
Publisher: name: Gesellschaft für Didaktik der Mathematik
Year: 2023
Subjects: subject: Genetisches Lernen
subject: Dialogisches Lernen
subject: Hochschuldidaktik
subject: 510

description: Während die Inhalte gängiger „Lineare Algebra“-Veranstaltungen innerhalb der universitären Ausbildung gymnasialer Mathematiklehrkräfte von den Studierenden noch als teilweise schulrelevant angesehen werden, ist dies bei Themen der modernen Algebra nicht mehr der Fall. Endliche reelle Vektorräume sowie Teile der synthetischen Geometrie lassen sich in spezieller Form in der Sekundarstufe II wiederfinden. Algebraische Strukturen bilden zwar auch die Grundlage für die Rechengesetze der Schulmathematik, das vertiefte Studium selbiger ist aber nicht konkret anzutreffen. Während Fachmathematiker* innen die Wichtigkeit dieser Strukturen für die Gesamtheit der Mathematik betonen, entsteht bei vielen Lehramtsstudierenden tendenziell ein Desinteresse an der modernen Algebra.
TEORIA ECONOMICA DEL VALORE : CHE COS'E' IL VALORE ECONOMICO OGGI?
Creators: name: Morelli, Rocco
Publisher: name: Zenodo
Year: 2019
Subjects: Gold Standard, Potere economico, Ricchezza, Valore

description: Repentine variazioni determinate in particolare da crisi cicliche/strutturali mettono a repentaglio non solo la produttività del capitale detenuto, ma addirittura la sua stessa esistenza. Tutto questo, associato alla globalizzazione, ha avuto ed ha tuttora l'effetto di far variare e spostare il baricentro del potere economico divenuto più esposto e mutevole rispetto al passato, associandolo ad una impredicibilità strutturale ed intrinseca che non favorisce condizioni di stabilità necessarie allo sviluppo. In tali mutevoli e impredicibili condizioni è ragionevole attendersi una ripresa della prevalenza associata alla Forza Militare rispetto a quella del Potere Economico?

Vedi anche

https://roccomorelli.blogspot.com/search?q=teoria+valore
description: Sembra ragionevole affermare che nella società moderna il valore e la ricchezza economica abbiano perso il loro significato originario ed abbiano assunto forme più "cartacee" e addirittura "evanescenti"
Finite N Quiver Gauge Theory
Creators: name: Koch, Robert de Mello
name: Kreyfelt, Rocky
name: Nokwara, Nkululeko
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: At finite N the number of restricted Schur polynomials is greater than or equal to the number of generalized restricted Schur polynomials. In this note we study this discrepancy and explain its origin. We conclude that, for quiver gauge theories, in general, the generalized restricted Schur polynomials correctly account for the complete set of finite N constraints and they provide a basis, while the restricted Schur polynomials only account for a subset of the finite N constraints and are thus overcomplete. We identify several situations in which the restricted Schur polynomials do in fact account for the complete set of finite N constraints. In these situations the restricted Schur polynomials and the generalized restricted Schur polynomials both provide good bases for the quiver gauge theory. Finally, we demonstrate situations in which the generalized restricted Schur polynomials reduce to the restricted Schur polynomials.
description: 1+21 pages, no figures
title: Social participation in coastal and ocean management in Brazil: Lessons learnt and ways ahead
title: Social participation in coastal and ocean management in Brazil: Lessons learnt and ways ahead
Creators: name: Glaser, Marion
name: Barbosa, R.
name: Sa Leitao, R.
name: Borges, R.
name: Blandtt, L.
name: Gerhardinger, L.C.
name: Ferreira, B.P.
name: Marques, S.
name: Goncalves, L.R.
name: Xavier, L.
name: Turra, A.
name: Leibniz Centre For Tropical Marine Research
Publisher: name: Leibniz Centre for Tropical Marine Research (ZMT)
Year: 2020

description: This police brief reviews participatory practices and their outcomes in the Brazilian coastal zone. Since the 1988 Brazilian National Constitution came into force, a number of instruments and policies were developed to foster social participation in coastal management. New actors, initiatives, practices and networks have opened up alternative pathways for social engagement. From the many examples of participatory processes in the last decades, we can learn about achievements and challenges. As the new millennium advances, a fragile institutional infrastructure hampers established participatory processes, and in particular the involvement of the poorest stakeholders, who ultimately bear the costs of most top-down coastal management decisions. Here, we present the main findings of a collaborative study of Brazilian and German partners that reviews and analyses participatory practices and their outcomes in the Brazilian coastal zone. How has Brazilian coastal and management evolved in terms of including vulnerable populations, in particular direct ecosystem users? Based on the analysis of large sets of data raised in several projects and bringing together the extensive experience of our co-authors, we offer recommendations for decision-makers from local to national level in Brazil and for other national and international actors (UN Agencies, donors, social-environmental movements). Based on the Brazilian experience, our recommendations are also of relevance in other contexts of decentralising coastal and coastal management.
Semantic MediaWiki as a Research Tool
Creators: name: Freiberg, Michael
Publisher: name: Zenodo
Year: 2023
Subjects: Open Science
Semantic Wiki
semantic Web
Open Linked Data
SPARQL

description: The free, open-source extension Semantic MediaWiki extends the well-known wiki system running e.g. Wikipedia to a database. In a Semantic MediaWiki, pages can be filled not only with text and media content but also with queryable data. The results of the queries can be displayed in many formats, e.g. as tables, diagrams or maps, and the processing of the data can be controlled via customizable forms. For data publication, the system provides a REST API and an RDF serialization mapping pages to entities and data attributes to semantic relations that can be aligned with other ontologies and controlled vocabularies. In this way, the content of a Semantic MediaWiki can be made interoperable as Open Linked Data. Another more sophisticated option for RDF data sharing is setting up a SPARQL endpoint which is also a feature of Semantic MediaWiki. By showcases from the Humanities and Social Sciences, the presentation will quickly introduce the main features of Semantic MediaWiki and focusing those addressing the needs of scholarly communication (e.g. collaboration, discussion, multilingualism), scholarly publishing (e.g. co-authoring, visual editor, version history, history view) and research data management (e.g. storing, querying and publishing FAIR data). Summing up how Semantic MediaWiki could make a good research tool, a discussion about its potentialities in the Social Sciences and Humanities open science will be opened.
description: The TRIPLE project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 863420 Disclaimer. The content of this publication is the sole responsibility of the author and can in no way be taken to reflect the views of the European Commission. The European Commission is not responsible for any use that may be made of the information it contains.
Einsatz einer mehrschrittigen digitalen Aufgabe mit elaborativem Feedback zum Thema Eigenwerttheorie
Creators: name: Dittmann, Phillip
Publisher: name: Gesellschaft für Didaktik der Mathematik
Year: 2023
Subjects: subject: STACK
subject: Service-Mathematik
subject: lineare Algebra
subject: elaboratives Feedback
subject: selbstständiges Üben
subject: 510

description: Das Bearbeiten von Übungsaufgaben ist eine der wichtigsten Tätigkeiten im mathematischen Lernprozess (Reiss & Hammer, 2021). Daher werden kontinuierlich neue Aufgabenformate erprobt. Vor allem im Hochschulkontext bieten digitale Aufgaben durch ihre automatisierte Auswertung verschiedene Vorteile. Dadurch können Lernende formatives, synchrones Feedback erhalten, welches als besonders effektiv gilt (van der Kleij & Adie, 2018). Derartige Übungsaufgaben, deren Erstellung beispielsweise durch die Software STACK möglich ist, können auch in mathematischen Veranstaltungen der Ingenieurstudiengänge eingesetzt werden. Dort werden hohe Studienabbruchquoten (Neugebauer et al., 2019) verzeichnet, sodass Unterstützungsangebote, vor allem in Form von Übungsmöglichkeiten mit wirkungsvollem Feedback, besonders wünschenswert sind.
Reproducing cosmic evolution of galaxy population from $z = 4$ to $0$
Creators: name: Okamoto, Takashi
name: Shimizu, Ikkoh
name: Yoshida, Naoki
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present cosmological hydrodynamic simulations performed to study evolution of galaxy population. The simulations follow timed release of mass, energy, and metals by stellar evolution and employ phenomenological treatments of supernova feedback, pre-supernova feedback modeled as feedback by radiation pressure from massive stars, and quenching of gas cooling in large halos. We construct the fiducial model so that it reproduces the observationally estimated galaxy stellar mass functions and the relationships between the galaxy stellar mass and the host halo mass from $z = 4$ to 0. We find that the fiducial model constructed this way naturally explains the cosmic star formation history, the galaxy downsizing, and the star formation rate and metallicity of the star-forming galaxies. The simulations without the quenching of the gas cooling in large halos overproduce massive galaxies at $z < 2$ and fail to reproduce galaxy downsizing. The simulations that do not employ the radiation pressure feedback from young stars predict too strong redshift evolution of the mass-metallicity relation. Furthermore, the slope of the relation becomes too steep at low redshift without the radiation pressure feedback. The metallicity dependence in the radiation pressure feedback is a key to explain the observed mass-metallicity relation. These facts indicate that these two processes in addition to supernova feedback are essential for galaxy evolution. Our simple phenomenological model is suitable to construct a mock galaxy sample to study physical properties of observed galaxy populations.
description: 14 pages, 9 figures, accepted for publication in PASJ
Rivoluzione digitale e applicazioni informatiche per la professione
Creators: name: Morelli, Rocco
Publisher: name: Zenodo
Year: 2022
Subjects: Rivoluzione digitale, applicazioni informatiche. cybersecurity

description: Il tema della cybersecurity entra nelle preoccupazioni delle Istituzioni, come in quelle degli organismi aziendali e dei direttivi delle associazioni (professionali e non). Si tratta di un tema complesso che non lascia intatto neppure il singolo professionista, coinvolto come la società tutta in una opera di informatizzazione costante, alla quale è obbligato dalle tendenze globali in atto. Tendenze competitive che peraltro sembrano spingere verso l’integrazione nel senso più generale del termine. Si giunge, con qualche esempio, ad evidenziare le potenzialità di questi sistemi informatici professionali, ma anche a sottolineare i legami tra sicurezza e affidabilità necessari nel settore, sebbene la presenza umana richieda attenzione, in particolare ai valori.
description: Vedi anche
https://www.aice-it.org/it/articles/780-rivoluzione-digitale-e-applicazioni-informatiche-per-la-professione
Frequency comb-based microwave transfer over fiber with $7 \times 10^{-19}$ instability using fiber-loop optical-microwave phase detectors
Creators: name: Jung, Kwangyun
name: Shin, Junho
name: Kang, Jinho
name: Hunziker, Stephan
name: Min, Chang-Ki
name: Kim, Jungwon
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We demonstrate a remote microwave/radio-frequency (RF) transfer technique based on the stabilization of a fiber link using a fiber-loop optical-microwave phase detector (FLOM-PD). This method compensates for the excess phase fluctuations introduced in fiber transfer by direct phase comparison between the optical pulse train reflected from the remote site and the local microwave/RF signal using the FLOM-PD. This enables sub-fs resolution and long-term stable link stabilization while having wide timing detection range and less demand in fiber dispersion compensation. The demonstrated relative frequency instability between 2.856-GHz RF oscillators separated by a 2.3-km fiber link is $7.6 \times 10^{-18}$ and $6.5 \times 10^{-19}$ at 1000 s and 82500 s averaging time, respectively.
description: 5 pages, 4 figures
(FEBBRAIO 2019) Per una lettura critica del PNEC - PIANO NAZIONALE PER L'ENERGIA E IL CLIMA
Creators: name: Morelli, Rocco
Publisher: name: Zenodo
Year: 2019
Subjects: Piano Nazionale per l'Energia e il Clima, PNEC, Strategia Energetica Nazionale

description: In data 31/12/2018 è stata pubblicata la PROPOSTA DI PIANO NAZIONALE INTEGRATO PER L'ENERGIA E IL CLIMA da parte dei seguenti Ministeri Italiani :

- Ministero dello Sviluppo Economico;

- Ministero dell'Ambiente e della Tutela del Territorio e del Mare

- Ministero delle Infrastrutture e dei Trasporti.

La versione integrale di questo importante documento è reperibile al seguente link:

 

https://drive.google.com/drive/folders/1hDkscOgUGKDWJUClIaXUhZvi8F_Iw6TV
description: Vedi anche
https://roccomorelli.blogspot.com/2019/02/per-una-lettura-critica-del-pnec-piano.html
Understanding degenerate ground states of a protected quantum circuit in the presence of disorder
Creators: name: Dempster, Joshua
name: Fu, Bo
name: Ferguson, David G.
name: Schuster, D. I.
name: Koch, Jens
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A recent theoretical proposal suggests that a simple circuit utilizing two superinductors may produce a qubit with ground state degeneracy [P. Brooks et al., Phys. Rev. A 87, 052306 (2013)]. We perform a full circuit analysis along with exact diagonalization of the circuit Hamiltonian to elucidate the nature of the spectrum and low-lying wave functions of this $0-π$ device. We show that the ground state degeneracy is robust to disorder in charge, flux and critical current as well as insensitive to modest variations in the circuit parameters. Our treatment is non-perturbative, provides access to excited states and matrix elements, and is immediately applicable also to intermediate parameter regimes of experimental interest.
description: 9 pages, 8 figures