cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Digital Evolution of Occupy Wall Street
Creators: name: Conover, Michael D.
name: Ferrara, Emilio
name: Menczer, Filippo
name: Flammini, Alessandro
Publisher: name: arXiv
Year: 2013
Subjects: subject: Computers and Society (cs.CY)
subject: Social and Information Networks (cs.SI)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: We examine the temporal evolution of digital communication activity relating to the American anti-capitalist movement Occupy Wall Street. Using a high-volume sample from the microblogging site Twitter, we investigate changes in Occupy participant engagement, interests, and social connectivity over a fifteen month period starting three months prior to the movement's first protest action. The results of this analysis indicate that, on Twitter, the Occupy movement tended to elicit participation from a set of highly interconnected users with pre-existing interests in domestic politics and foreign social movements. These users, while highly vocal in the months immediately following the birth of the movement, appear to have lost interest in Occupy related communication over the remainder of the study period.
description: Open access available at: http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0064679
Comparison of different approaches applied in Analytic Hierarchy Process - An example of information needs of patients with rare diseases
Creators: name: Pauer, Frederic
name: Schmidt, Katharina
name: Babac, Ana
name: Damm, Kathrin
name: Frank, Martin
name: Schulenburg, Johann-Matthias Graf Von Der
Publisher: name: London : BioMed Central Ltd.
Year: 2016
Subjects: subject: Analytic Hierarchy Process
subject: Decision-making
subject: Internet homepage
subject: Patient priorities
subject: Rare disease
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit

description: Background: The Analytic Hierarchy Process (AHP) is increasingly used to measure patient priorities. Studies have shown that there are several different approaches to data acquisition and data aggregation. The aim of this study was to measure the information needs of patients having a rare disease and to analyze the effects of these different AHP approaches. The ranking of information needs is then used to display information categories on a web-based information portal about rare diseases according to the patient's priorities. Methods: The information needs of patients suffering from rare diseases were identified by an Internet research study and a preliminary qualitative study. Hence, we designed a three-level hierarchy containing 13 criteria. For data acquisition, the differences in outcomes were investigated using individual versus group judgements separately. Furthermore, we analyzed the different effects when using the median and arithmetic and geometric means for data aggregation. A consistency ratio ≤0.2 was determined to represent an acceptable consistency level. Results: Forty individual and three group judgements were collected from patients suffering from a rare disease and their close relatives. The consistency ratio of 31 individual and three group judgements was acceptable and thus these judgements were included in the study. To a large extent, the local ranks for individual and group judgements were similar. Interestingly, group judgements were in a significantly smaller range than individual judgements. According to our data, the ranks of the criteria differed slightly according to the data aggregation method used. Conclusions: It is important to explain and justify the choice of an appropriate method for data acquisition because response behaviors differ according to the method. We conclude that researchers should select a suitable method based on the thematic perspective or investigated topics in the study. Because the arithmetic mean is very vulnerable to outliers, the geometric mean and the median seem to be acceptable alternatives for data aggregation. Overall, using the AHP to identify patient priorities and enhance the user-friendliness of information websites offers an important contribution to medical informatics.
How to Rapidly Improve Learning Outcomes at System Level?
Creators: name: Admin, RISE
name: Crouch, Luis
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 390307
subject: Teacher education and professional development of educators
classificationCode: 399999
subject: Other education not elsewhere classified
classificationCode: 440499
subject: Development studies not elsewhere classified

description: This text discusses strategies for rapidly improving learning outcomes at a system level. It highlights the importance of focusing on foundational learning in developing countries and presents case studies from Kenya, the state of Puebla in Mexico, and the municipality of Sobral in Ceará, Brazil. The approach involves three phases: Why, What, and How. The Why phase emphasizes prioritization based on data and program design, the What phase focuses on implementing effective learning management components, and the How phase emphasizes tight management and coordination of inputs. The cases emphasize the significance of teacher support, motivation systems, and iterative feedback. Trust, respect, and evidence-based practices play crucial roles in achieving accountability and success.
title: ФЕРМА-2035: ПЕРСПЕКТИВА РАЗВИТИЯ РЫНКА ПРОИЗВОДСТВА МОЛОКА СТАВРОПОЛЬСКОГО КРАЯ
title: FARM-20356 THE PROSPECT OF THE MILK PRODUCTION MARKET DEVELOPMENT IN THE STAVROPOL TERRITORY
Creators: name: Сулыга, Н.В.
Publisher: name: ФГБНУ "Северо-Кавказский федеральный научный аграрный центр"
Year: 2019

description: Агентство стратегических инициатив (АСИ) представило «дорожную карту» развития сельского хозяйства до 2035 года  «FoodNet» или «Рынок персонализированного питания». Ставропольский край, будучи аграрным регионом, может войти на лидерских позициях в реализацию данной инициативы. В статье представлен анализ существующих фермерских проектов по производству молока, а также определены наиболее перспективные формы  молочных хозяйств, соответствующих концепции проекта.
description: The Agency of Strategic Initiatives (ASI) presented a roadmap for agricultural development until 2035 (FoodNet or Personalized Nutrition Market). Stavropol Territory, being an agrarian region, can enter leading positions in the implementation of this initiative. The article presents an analysis of existing farmer projects for the milk production, as well as the most promising farms of dairy farms corresponding to the project concept.
Resonances in the heavy symmetrical top with vibrating pivot
Creators: name: Bhattacharjee, Shayak
Publisher: name: arXiv
Year: 2013
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: In this work we consider a heavy symmetrical top whose pivot is subjected to vertical and horizontal vibrations, and derive a resonance criterion when the top is thrown off the stable position.
description: 10 pages plus references
Did tuition fees in Germany constrain students' budgets? New evidence from a natural experiment
Creators: name: Thomsen, Stephan L.
name: Von Haaren-Giebel, Friederike
Publisher: name: Heidelberg : Springer Heidelberg
Year: 2016
Subjects: subject: tuition fees
subject: student spending
subject: natural experiment
subject: germany
subject: loan take-up
subject: higher-education
subject: united-kingdom
subject: enrollment
subject: university
subject: determinants
subject: resources
subject: behavior
subject: school
subject: cost
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::330 | Wirtschaft

description: Less than a decade ago, several German states introduced tuition fees for university education. Despite their comparatively low level of about (sic)500 per semester, fees were perceived by the public to increase social injustice and have been abolished recently. Whereas other studies have shown no effect on enrollment, we analyze the effects on students' budgets. To identify causal effects, we exploited the natural experiment established by the introduction of fees. Tuition fees decrease total expenditure moderately by about 4 %. With regard to financial resources, students are more likely to receive support from parents or take out a loan.
System (In)Coherence Seen through a Curriculum Lens: Ugandan Teachers Face Conflicting Demands from Curriculum and Examination Bodies
Creators: name: Admin, RISE
name: Atuhurra, Julius
name: Kaffenberger, Michelle
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 399999
subject: Other education not elsewhere classified
classificationCode: 440499
subject: Development studies not elsewhere classified

description: This text examines the issue of (in)coherence in the Ugandan education system, specifically regarding conflicting demands on teachers from the curriculum and examination bodies. It highlights the importance of aligning education systems towards learning outcomes. The study finds low coherence between the curriculum and exam, leading to conflicting demands on teachers' time. Incoherence arises from separate processes in curriculum and exam development. The RISE framework and the "Surveys of Enacted Curriculum" methodology are used to analyze and quantify incoherence. The findings underscore the need for better alignment between the curriculum and exam to prioritize learning.
Nachwuchs forscht – Auswertung eines eisenzeitlichen Gräberfelds in Ibbenbüren
Creators: name: Becker, Valeska
Publisher: name: Archäologie in Westfalen-Lippe
Year: 2016

description: -
description: Archäologie in Westfalen-Lippe, ARCHÄOLOGIE IN WESTFALEN-LIPPE 2014 (2015)
title: ОСОБЕННОСТИ ИНВЕСТИЦИОННОГО ИМИДЖА РЕГИОНОВ ПО ДАННЫМ ЦЕНТРАЛЬНОГО ФЕДЕРАЛЬНОГО ОКРУГА
title: PECULIARITIES OF THE INVESTMENT IMAGE OF THE RE-GIONS ACCORDING TO THE CENTRAL FEDERAL DISTRICT DATA
Creators: name: Третьякова, М.С.
Publisher: name: ФГБНУ "Северо-Кавказский федеральный научный аграрный центр"
Year: 2019

description: В данной статье рассматриваются социально-экономические отношения, определяю-щие процессы и закономерности формирования инвестиционного имиджа региона. А также выдвигаются теоретические подходы, определяющие закономерности формиро-вания инвестиционного имиджа региона, определяется система факторного влияния на инвестиционный имидж региона как базовое условие увеличения объема привлечения иностранных инвестиций, что находит отражение в методологии анализа, прогнозиро-вания и планирования развития региональной инвестиционной политики.
description: This article discusses the socio-economic relations that determine the processes and patterns of the formation of the investment image of the region. As well as put forward theoretical approaches that determine the laws governing the formation of the region’s investment image, determine the system of factorial influence on the region’s investment image as a basic condition for increasing the volume of foreign investment, which is reflected in the methodology for analyzing, forecasting and planning regional investment policy development.
Dynamical clustering and phase separation in suspensions of self-propelled colloidal particles
Creators: name: Buttinoni, Ivo
name: Bialké, Julian
name: Kümmel, Felix
name: Löwen, Hartmut
name: Bechinger, Clemens
name: Speck, Thomas
Publisher: name: arXiv
Year: 2013
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We study experimentally and numerically a (quasi) two dimensional colloidal suspension of self-propelled spherical particles. The particles are carbon-coated Janus particles, which are propelled due to diffusiophoresis in a near-critical water-lutidine mixture. At low densities, we find that the driving stabilizes small clusters. At higher densities, the suspension undergoes a phase separation into large clusters and a dilute gas phase. The same qualitative behavior is observed in simulations of a minimal model for repulsive self-propelled particles lacking any alignment interactions. The observed behavior is rationalized in terms of a dynamical instability due to the self-trapping of self-propelled particles.
description: 8 pages including supplemental information, to appear in Phys. Rev. Lett
Hochwasser und Sturzfluten an Flüssen in Deutschland
Creators: name: Bronstert, Axel
name: Bormann, H.
name: Bürger, Gerd
name: Haberlandt, Uwe
name: Hattermann, Fred
name: Heistermann, Maik
name: Huang, Shaochun
name: Kolokotronis, Vassilis
name: Kundzewicz, Zbigniew W.
name: Menzel, Lucas
name: Meon, Günter
name: Merz, Bruno
name: Meuser, Andreas
name: Paton, Eva Nora
name: Petrow, Theresia
Publisher: name: Heildelberg : Springer
Year: 2016
Subjects: subject: Hochwasser
subject: Flut
subject: Deutschland
subject: Klima
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: Flusshochwasser werden in lokale und plotzliche Sturzfluten und in Hochwasser an groseren Flussen unterschieden. Fur verschiedene Hochwasserindikatoren und Flusseinzugsgebiete ergeben sich erhebliche Unterschiede, wobei sowohl uberwiegend aus Regen als auch uberwiegend aus Schmelzwasser gespeiste Hochwasserereignisse betrachtet werden. Besondere Aufmerksamkeit finden Hochwasserereignisse an Rhein, Elbe, Weser und Ems sowie die Entwicklung von Sturzfluten infolge von Extremniederschlagen kurzer Dauer, wobei die Beobachtungen und Trends zu Modellierungsergebnissen in Beziehung gesetzt werden. Auch die Notwendigkeit von Anpassungsmasnahmen aufgrund uberwiegend positiver Trends wird diskutiert.
We Need More Investment in Education - Not Just Spending on "More of the Same"
Creators: name: Admin, RISE
name: Kaffenberger, Michelle
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 380104
subject: Economics of education
classificationCode: 399999
subject: Other education not elsewhere classified
classificationCode: 440404
subject: Political economy and social change
classificationCode: 440499
subject: Development studies not elsewhere classified

description: The article advocates for prioritizing and expanding investment in education as a key driver for societal progress and individual empowerment. It highlights the need for adequate funding and resources to improve the quality and accessibility of education. The author emphasizes that investing in education is crucial for achieving sustainable development and addressing societal challenges. The article explores the benefits of education investment, such as enhanced economic growth, reduced poverty, and improved social mobility. It also discusses the impact of education on various aspects of individuals' lives, including health, employment, and overall well-being. The article calls for both public and private investment in education and highlights the significance of evidence-based policies and strategic planning to maximize the impact of investments.
Human reliability analysis—accounting for human actions and external factors through the project life cycle
Creators: name: Morais, C.
name: Moura, R.
name: Beer, M.
name: Patelli, E.
Publisher: name: London : Taylor & Francis Group
Year: 2018
Subjects: subject: Bayesian networks
subject: Brain
subject: Chemical analysis
subject: Chemical plants
subject: Complex networks
subject: Gas plants
subject: Life cycle
subject: Nuclear fuels
subject: Nuclear power plants
subject: Reliability theory
subject: Risk assessment
subject: Classification scheme
subject: Cognitive reliability
subject: Complex sociotechnical systems
subject: Conditional probability tables
subject: Human reliability analysis
subject: Learning from experiences
subject: Technological components
subject: Technological factors
subject: Reliability analysis
subject: Konferenzschrift
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie

description: Airplanes, ships, nuclear power plants and chemical production plants (including oil & gas facilities) are examples of industries that depend upon the interaction between operators and machines. Consequently, to assess the risks of those systems, not only the reliability of the technological components has to be accounted for, but also the ‘human model’. For this reason, engineers have been working together with psychologists and sociologists to understand cognitive functions and how the organisational context influences individual actions. Human Reliability Analysis (HRA) identifies and analyses the causes, consequences and contributions of human performance (including failures) in complex sociotechnical systems. Generally, HRA research is concentrated in modelling workers’ performance in the “sharp-end”, assessing the ones directly involved in handling the system, especially operators. However, in theory, a reliability analysis can be applied to any kind of human action, including those from designers and managers. This research will evaluate a way of conducting HRA in the design process, as previous research has demonstrated that design failure is the predominant contributor to human errors (Moura et al., 2016). Bayesian Network (BN) – a systematic way of learning from experience and incorporating new evidence (deterministic or probabilistic) – is proposed to model the complex relationships within cognitive functions, organisational and technological factors. Conditional probability tables have been obtained from a dataset of major accidents from different industry sectors (Moura et al. 2017), using a classification scheme developed by Hollnagel (1998) for an HRA method called CREAM – Cognitive Reliability and Error Analysis Method. The model allows to infer which factors most influence human performance in different scenarios. Also, we will discuss if the model can be applied to any human actions through the project life cycle— since the design phase to the operational phase, including their management.
Scanning tunneling microscopy with InAs nanowire tips
Creators: name: Flöhr, Kilian
name: Sladek, Kamil
name: Günel, H. Yusuf
name: Lepsa, Mihail Ion
name: Hardtdegen, Hilde
name: Liebmann, Marcus
name: Schäpers, Thomas
name: Morgenstern, Markus
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Indium arsenide nanowires grown by selective-area vapor phase epitaxy are used as tips for scanning tunneling microscopy (STM). The STM tips are realized by positioning the wires manually on the corner of a double cleaved gallium arsenide wafer with submicrometer precision and contacting them lithographically, which is fully compatible with further integrated circuitry on the GaAs wafer. STM images show a z-noise of 2 pm and a lateral stability of, at least, 0.5 nm on a Au(111) surface. I(z) spectroscopy reveals an exponential decay indicating tunneling through vacuum. Subsequent electron microscopy images of the tip demonstrate that the wires are barely modified during the STM imaging.
Ground-based detection of Calcium and possibly Scandium and Hydrogen in the atmosphere of HD 209458b
Creators: name: Astudillo-Defru, N.
name: Rojo, P.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Context: Since the first exoplanetary atmosphere detection using the Hubble Space Telescope, characterization of exoplanet atmospheres from the ground have been playing an increasingly important role in the analysis of such atmospheres thanks to the enhancement of telluric correction techniques. At present, several species have been discovered in the atmosphere of HD 209458b, all of them consistent with theoretical models. Aims: Data acquired using the High Dispersion Spectrograph on the Subaru telescope are re-analysed. We expect to discover new species in the atmosphere of the exoplanet HD 209458b. In addition to shed light on the atmospheric composition, we will derive the radial extension of the absorbents present in the atmosphere of the exoplanet. Methods: We present an alternative method to correct the telluric effects through the analysis of variations in spectral lines with the airmass. To search absorptions due to an exoplanetary atmosphere we implemented an algorithm to automatically search for all the features presenting an atmospheric signature in the transmission spectrum and through the wavelength range in the data. In order to estimate uncertainties we perform a bootstrapping analysis. Results: Absorption excess due to the transitions of Calcium at 6162.17A and 6493.78A, Scandium at 5526.79A, Hydrogen at 6562.8A and Sodium doublet are detected in the transmission spectrum at a level of -0.079+-0.012%, -0.138+-0.013%, -0.059+-0.012%, -0.123+-0.012%, -0.071+-0.016% using pass-bands of 0.5A, 0.4A, 0.5A, 1.1A and 0.6A, respectively. Conclusions: Models predict strong absorption in the Sodium resonance Doublet which was previously detected, also in this analysis. However, this is the first report of Calcium and possibly Scandium in HD 209458b, including the possible ground-based detection of Hydrogen. ... (continues)
description: 8 pages, 9 figures. Accepted for publication in A&A
Parametrised complexity of satisfiability in temporal logic
Creators: name: Lück, Martin
name: Meier, Arne
name: Schindler, Irena
Publisher: name: Association for Computing Machinery
Year: 2017
Subjects: subject: Computation tree logic
subject: Linear temporal logic
subject: Parametrised complexity
subject: Pathwidth
subject: Post's lattice
subject: Temporal depth
subject: Temporal logic
subject: Treewidth
subject: Boolean functions
subject: Formal logic
subject: Tree-width
subject: Computer circuits
subject: Dewey Decimal Classification::500 | Naturwissenschaften::510 | Mathematik

description: We apply the concept of formula treewidth and pathwidth to computation tree logic, linear temporal logic, and the full branching time logic. Several representations of formulas as graphlike structures are discussed, and corresponding notions of treewidth and pathwidth are introduced. As an application for such structures, we present a classification in terms of parametrised complexity of the satisfiability problem, where we make use of Courcelle's famous theorem for recognition of certain classes of structures. Our classification shows a dichotomy between W[1]-hard and fixed-parameter tractable operator fragments almost independently of the chosen graph representation. The only fragments that are proven to be fixed-parameter tractable (FPT) are those that are restricted to the X operator. By investigating Boolean operator fragments in the sense of Post's lattice, we achieve the same complexity as in the unrestricted case if the set of available Boolean functions can express the function "negation of the implication." Conversely, we show containment in FPT for almost all other clones. © ACM 2017. This is the author's version of the work. It is posted here for your personal use. Not for redistribution. The definitive Version of Record was published in ACM Transactions on Computational Logic 18 (2017), Nr. 1, 1. DOI: https://doi.org/10.1145/3001835.
What Do We Mean By "Foundational Skills"?
Creators: name: Admin, RISE
name: Kilburn, Lillie
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 390102
subject: Curriculum and pedagogy theory and development
classificationCode: 390201
subject: Education policy
classificationCode: 399999
subject: Other education not elsewhere classified

description: This text explores the concept of "foundational skills" and their significance, especially in the context of the COVID-19 pandemic. It breaks down the term into its components: universal, early, conceptual, procedural, and mastery. It emphasizes the importance of children acquiring these skills early on and understanding them conceptually. The text also highlights the need for practice and proficiency in applying these skills practically. Foundational skills encompass basic literacy and numeracy, which are crucial for further education and personal empowerment.
Experimental evidence for the coupling of Li-motion and structural distortions in LiMnPO$_4$
Creators: name: Rudisch, Christian
name: Grafe, Hans-Joachim
name: Geck, Jochen
name: Partzsch, Sven
name: Zimmermann, M. v.
name: Wizent, Nadja
name: Klingeler, Rüdiger
name: Büchner, Bernd
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present a detailed $^7$Li- and $^{31}$P-NMR study on single crystalline LiMnPO$_4$ in the paramagnetic and antiferromagnetic phase (AFM, $T_N \sim$ 34 K). This allows us to determine the spin directions in the field-induced spin-flop phase. In addition, the anisotropic dipolar hyperfine coupling tensor of the $^7$Li- and $^{31}$P-nuclei is also fully determined by orientation and temperature dependent NMR experiments and compared to the calculated values from crystal structure data. Deviations of the experimental values from the theoretical ones are discussed in terms of Mn disorder which is induced by Li-disorder. In fact, the disorder in the Mn-sublattice is directly revealed by our diffuse x-ray scattering data. The present results provide experimental evidence for the Li-diffusion strongly coupling to structural distortions within the MnPO$_4$ host, which is expected to significantly affect the Li-mobility as well as the performance of batteries based on this material.
What Do Effective Instructional Materials Look Like?
Creators: name: Admin, RISE
name: Hwa, Yue-Yi
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 390199
subject: Curriculum and pedagogy not elsewhere classified
classificationCode: 390408
subject: Learning analytics
classificationCode: 399999
subject: Other education not elsewhere classified

description: This article discusses the importance of effective instructional materials in improving learning outcomes. It explores strategies for addressing supply shortages and highlights the need for materials that are suitable for diverse user circumstances. Additionally, it emphasizes the burden of evaluating instructional materials and advocates for providing teachers with access to high-quality resources. The article concludes by emphasizing the significance of well-designed materials in supporting students' educational journey.
What are the Challenges for Reopening Schools in Ethiopia? Perspectives of School Principals and Teachers
Creators: name: Admin, RISE
name: Yorke, Louise
name: Rose, Pauline
name: Woldehanna, Tassew
name: Hailu, Belay Hagos
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 390201
subject: Education policy
classificationCode: 390403
subject: Educational administration, management and leadership
classificationCode: 399999
subject: Other education not elsewhere classified
classificationCode: 440499
subject: Development studies not elsewhere classified

description: This text discusses the challenges faced by school principals and teachers in Ethiopia when reopening schools after the COVID-19 pandemic. It highlights the need for their perspectives in planning and identifies key areas of concern, such as access to information and technology, support for student learning, strategies for catching up on missed learning, supporting disadvantaged students, ensuring student return, and ensuring safety and hygiene.
Research on Teaching and Learning Mathematics at the Tertiary Level: State-of-the-Art and Looking Ahead
Creators: name: Biza, Irene
name: Giraldo, Victor
name: Hochmuth, Reinhard
name: Sadat Khakbaz, Azimeh
name: Rasmussen, Chris
Publisher: name: New York, NY : Springer International Publishing
Year: 2016
Subjects: subject: Mathematics education
subject: Pedagogy
subject: Mathematics
subject: FOS: Mathematics
subject: Medicine
subject: Dewey Decimal Classification::500 | Naturwissenschaften::510 | Mathematik
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::370 | Erziehung, Schul- und Bildungswesen

description: This topical survey focuses on research in tertiary mathematics education, a field that has experienced considerable growth over the last 10 years. Drawing on the most recent journal publication as well as the latest advances from recent high quality conference proceedings, our review culls out the following five emergent areas of interest: mathematics teaching at the tertiary level; the role of mathematics in other disciplines; textbooks, assessment and students’ studying practices; transition to the tertiary level; and theoretical-methodological advances. We conclude the survey with a discussion of some potential ways forward for future research in this new and rapidly developing domain of inquiry.
Spectral curves for Cauchy-Riemann operators on punctured elliptic curves
Creators: name: Bohle, Christoph
name: Taimanov, Iskander A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Differential Geometry (math.DG)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: We show that one can define a spectral curve for the Cauchy-Riemann operator on a punctured elliptic curve if one imposes appropriate boundary conditions. Algebraic curves of the type thus obtained appear as irreducible components of spectral curves of minimal tori with planar ends in R^3. It appears that these curves coincide with the spectral curves of certain elliptic KP solitons as studied by Krichever.
description: 6 pages
On the Discrepancy in Simultaneous Observations of the Structure Parameter of Temperature Using Scintillometers and Unmanned Aircraft
Creators: name: Braam, Miranda
name: Beyrich, Frank
name: Bange, Jens
name: Platis, Andreas
name: Martin, Sabrina
name: Maronga, Björn
name: Moene, Arnold F.
Publisher: name: Dordrecht : Springer Netherlands
Year: 2016
Subjects: subject: Airborne measurements
subject: Large-eddy simulation
subject: LITFASS experiment
subject: Scintillometer measurements
subject: Sonic anemometer measurements
subject: Temperature structure parameter
subject: Aluminum
subject: Boundary layers
subject: Large eddy simulation
subject: Scintillation
subject: Unmanned aerial vehicles (UAV)
subject: Humidity correction
subject: Large aperture scintillometers
subject: Mini-aerial vehicles
subject: Simultaneous observation
subject: Sonic anemometer
subject: Spatial structure function
subject: Data handling
subject: airborne survey
subject: airflow
subject: error correction
subject: experimental study
subject: large eddy simulation
subject: parameterization
subject: wind velocity
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: We elaborate on the preliminary results presented in Beyrich et al. (in Boundary-Layer Meteorol 144:83–112, 2012), who compared the structure parameter of temperature (C2T) obtained with the unmanned meteorological mini aerial vehicle ( M 2 AV ) versus C2T obtained with two large-aperture scintillometers (LASs) for a limited dataset from one single experiment (LITFASS-2009). They found that C2T obtained from the M 2 AV data is significantly larger than that obtained from the LAS data. We investigate if similar differences can be found for the flights on the other six days during LITFASS-2009 and LITFASS-2010, and whether these differences can be reduced or explained through a more elaborate processing of both the LAS data and the M 2 AV data. This processing includes different corrections and measures to reduce the differences between the spatial and temporal averaging of the datasets. We conclude that the differences reported in Beyrich et al. can be found for other days as well. For the LAS-derived values the additional processing steps that have the largest effect are the saturation correction and the humidity correction. For the M 2 AV -derived values the most important step is the application of the scintillometer path-weighting function. Using the true air speed of the M 2 AV to convert from a temporal to a spatial structure function rather than the ground speed (as in Beyrich et al.) does not change the mean discrepancy, but it does affect C2T values for individual flights. To investigate whether C2T derived from the M 2 AV data depends on the fact that the underlying temperature dataset combines spatial and temporal sampling, we used large-eddy simulation data to analyze C2T from virtual flights with different mean ground speeds. This analysis shows that C2T does only slightly depends on the true air speed when averaged over many flights.
Changing gender norms to support girls' education and empowerment? The progress and challenges of Girls' Clubs in primary schools in Ethiopia
Creators: name: Admin, RISE
name: Chuta, Nardos
name: Yorke, Louise
name: Pankhurst, Alula
name: Rose, Pauline
name: Tafere, Yisak
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 380104
subject: Economics of education
classificationCode: 390201
subject: Education policy
classificationCode: 390406
subject: Gender, sexuality and education
classificationCode: 399999
subject: Other education not elsewhere classified

description: This text explores the role of Girls' Clubs in addressing gender norms and promoting girls' education in Ethiopia. The government's education reform program aims to create safer and more accessible schools for female students through the establishment of Girls' Clubs. The paper draws on interviews and discussions with teachers and student members of Girls' Clubs. While progress has been made, the analysis reveals limitations in terms of financial resources and institutional support, hindering the desired impact on girls' education and empowerment. The paper suggests allocating more resources to Girls' Clubs and reforming the institutional context, including involving boys in the clubs and providing appropriate training for supporting teachers.
On the rotational dynamics of Prometheus and Pandora
Creators: name: Melnikov, A. V.
name: Shevchenko, I. I.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Possible rotation states of two satellites of Saturn, Prometheus (S16) and Pandora (S17), are studied by means of numerical experiments. The attitude stability of all possible modes of synchronous rotation and the motion close to these modes is analyzed by means of computation of the Lyapunov spectra of the motion. The stability analysis confirms that the rotation of Prometheus and Pandora might be chaotic, though the possibility of regular behaviour is not excluded. For the both satellites, the attitude instability zones form series of concentric belts enclosing the main synchronous resonance center in the phase space sections. A hypothesis is put forward that these belts might form "barriers" for capturing the satellites in synchronous rotation. The satellites in chaotic rotation can mimic ordinary regular synchronous behaviour: they preserve preferred orientation for long periods of time, the largest axis of satellite's figure being directed approximately towards Saturn.
description: 20 pages, 9 figures
Analytical Determination of the Slot and the End-Winding Portion of the Winding-to-Rotor Capacitance for the Prediction of Shaft Voltage in Electrical Machines
Creators: name: Stockbrügger, Jan Ole
name: Ponick, Bernd
Publisher: name: Basel : MDPI
Year: 2020
Subjects: subject: winding-to-rotor capacitance
subject: shaft voltage
subject: EDM currents
subject: traction motor
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Common-mode voltage, caused by a 2-level inverter, is a source of discharge currents in motor bearings. Due to the capacitive coupling, between the stator winding and the rotor, an image of the common-mode voltage is produced on the shaft—which can exceed the dielectric strength of the lubrication film of motor bearings. Accurate determination of the winding-to-rotor capacitance is necessary to predict the shaft voltage. This article proposes a novel analytical determination of the slot and the end-winding portion of the winding-to-rotor capacitance. The calculation rules, which are based on the method of image charges and the charge simulation method, take into account the continuity and the boundary conditions of the field areas. Results are validated by means of finite element method simulations. Notably, deviations are in the single-digit percentage range. Furthermore, the presented methods are simple to implement.
Circular Fields and Predictive Multi-Agents for Online Global Trajectory Planning
Creators: name: Becker, Marvin
name: Lilge, Torsten
name: Müller, Matthias A.
name: Haddadin, Sami
Publisher: name: New York, N.Y. : Institute of Electrical and Electronics Engineers Engineering
Year: 2021
Subjects: subject: Motion and Path Planning
subject: Collision Avoidance
subject: Reactive and Sensor-Based Planning
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Safe and efficient trajectory planning for autonomous robots is becoming increasingly important in both industrial applications and everyday life. The demands on a robot which has to react quickly and precisely to changes in cluttered, unknown and dynamic environments are particularly high. Towards this end, based on the initial idea proposed in Haddadin et al. 2013 we propose the Circular Field Predictions approach, which unifies reactive collision avoidance and global trajectory planning while providing smooth, fast and collision free trajectories for robotic motion planning reactive collision avoidance and global trajectory planning while providing smooth, fast and collision free trajectories for robotic motion planning. The proposed approach is inspired by electromagnetic fields, free of local minima and extended with artificial multi-agents to efficiently explore the environment. The algorithm is extensively analysed in complex simulation environments where it is shown to be able to generate smooth trajectories around arbitrarily shaped obstacles. Moreover, we experimentally verified the approach with a 7 Degree-of-Freedom (DoF) Franka Emika robot.
Additive Manufacturing and Vulcanization of Carbon Black Filled Natural Rubber Based Components
Creators: name: Leineweber, Sebastian
name: Sundermann, Lion
name: Bindszus, Lars
name: Overmeyer, Ludger
name: Klie, Benjamin
name: Wittek, Heike
name: Giese, Ulrich
Publisher: name: Lancaster, Pa. : Rubber Division of the American Chemical Society
Year: 2021
Subjects: subject: Dewey Decimal Classification::600 | Technik

description: Additive manufacturing of thermoplastics or metals is a well-approved sustainable process for obtaining rapidly precise and individual technical components. Except for crosslinked silicone rubber or thermoplastic elastomers, there is no method of additive manufacturing of elastomers. Based on the development of the additive manufacturing of elastomers (AME) process, the material group of rubber-based cured elastomers may gain first access to the process field of three-dimensional (3D) printing. Printing and crosslinking of rubber is separated into two steps. In the first step, printing is realized by extrusion of the rubber by using a twin-screw extruder, which works according to the derived fused-filament-fabrication principle. In the second step, the component is vulcanized in a high-pressure hot-air autoclave. Because of the plastic flow behavior of non–crosslinked rubber materials, a thermoplastic shell is probably needed to maintain the geometry and position of the additively manufactured rubber. In this way, one layer of thermoplastic and one layer of rubber are printed alternatingly until the component is finished. Afterward, the manufactured binary component is placed in an autoclave to obtain the elastomer after vulcanization under a hot-air and high-pressure atmosphere. Then, the thermoplastic shell is removed from the elastomer and can subsequently be recycled. As compared with conventional thermoplastics, the high viscosity of rubber during processing and its instable shape after extrusion are challenging factors in the development of the AME. This contribution will show a modified 3D printer; explain the printing process from the designed component, via shell generation, to the vulcanized component; and show first printed components.
Typha angustifolia
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: P. angustifolia L. (P. azurea Besser) Lichte Waldstellen, Zwergstrauchheiden, Wildheuplanken. Verbreitung noch wenig bekannt. 2: Rawilpass bei Armeillon, 2270 m (Gilomen 1922); bei Plans Mayens ob Montana (IVtarietan 1946); südlich Ruossilauenen im unteren Lötschental (Dübi 1941); Hornmattenwald ob Mund (Zwicky 1953,Terretaz 1955). - 3: Dalles de l'Arbarey und Plan Bö ob Saxon (Marietan 1931); Coor (Nendaz) (idem). - 3a: Pianezza (Alpien), 1860 m (Dübi 1930).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Boundedness of a class of bi-parameter square functions in the upper half-space
Creators: name: Martikainen, Henri
Publisher: name: arXiv
Year: 2013
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 42B20

description: We consider a class of bi-parameter kernels and related square functions in the upper half-space, and give an efficient proof of a boundedness criterion for them. The proof uses modern probabilistic averaging methods and is based on controlling double Whitney averages over good cubes.
description: 16 pages
Prediction of Ground Surfaces by Using the Actual Tool Topography
Creators: name: Hockauf, Rolf
name: Böß, Volker
name: Grove, Thilo
name: Denkena, Berend
Publisher: name: Basel : MDPI
Year: 2019
Subjects: subject: grinding
subject: dexel-based kinematic simulation
subject: surface prediction
subject: grinding tool measurement
subject: laser triangulation
subject: envelope profile
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau
subject: Dewey Decimal Classification::600 | Technik::650 | Management

description: This paper presents a prediction model for ground surfaces that uses the actual grinding wheel topography to perform a grinding simulation. Precise knowledge of expected machined surfaces plays an important role in process planning. Here, the main criterion is the achievement of the components’ function after manufacturing. Therefore, it is essential to consider the surface roughness to enable a function-orientated workpiece surface. The presented approach uses a real grinding tool topography, which is measured by a 3D laser triangulation sensor in the machine tool. After a data processing step, the measured topography is imported into a material removal simulation. A kinematic simulation of the realistic ground surface enables the data-based confirmation of the envelope profile theory for the first time.
COVID-19 School Closures May Further Widen the Inequality Gaps between the Advantaged and the Disadvantaged in Ethiopia
Creators: name: Admin, RISE
name: Tiruneh, Dawit Tibebu
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 390201
subject: Education policy
classificationCode: 399999
subject: Other education not elsewhere classified
classificationCode: 440404
subject: Political economy and social change
classificationCode: 440499
subject: Development studies not elsewhere classified

description: This text discusses the potential widening of inequality gaps between advantaged and disadvantaged individuals in Ethiopia due to the COVID-19 school closures. It highlights the challenges of ensuring equitable access to learning during the pandemic and the impact on different socioeconomic groups. The limited access to technology and infrastructure for remote learning in low-income countries like Ethiopia is addressed, along with the disparities between private and public schools in urban areas. The text suggests strategies for supporting home-schooling, addressing the needs of children with disabilities, and preventing further inequalities. It also emphasizes the importance of preparing for future crises and implementing evidence-based interventions to recover lost learning.
Contributions to the Theory of de Bruijn Cycle
Creators: name: Campbell, André Alexander
name: Godbole, Anant
name: Kay, Bill
Publisher: name: Zenodo
Year: 2014

description: A de Bruijn cycle is a cyclic listing of length A, of a collection of A combinatorial objects, so that each object appears exactly once as a set of consecutive elements in the cycle. In this paper, we show the power of de Bruijn's original theorem, namely that the cycles bearing his name exist for n-letter words on a k-letter alphabet for all values of k, n, to prove that we can create de Bruijn cycles for the assignment of elements of [n] = {1, 2,...,n} to the sets in any labeled subposet of the Boolean lattice; de Bruijn's theorem corresponds to the case when the subposet in question consists of a single ground element. The landmark work of F. Chung, Diaconis, and Graham extended the agenda of finding de Bruijn cycles to possibly the next most natural set of combinatorial objects, namely k-subsets of [n]. In this area, important contributions have been those of Hurlbert and Rudoy. Here we follow the direction of Blanca and the second author, who proved that, in a suitable encoding, de Bruijn cycles can be created for the subsets of [n] of size in the interval [s, t]; 0 ≤ s
Long-range correlations in proton-lead collisions at sqrt{s_NN} = 5.02 TeV from ATLAS
Creators: name: Jia, Jiangyong
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Two-particle correlations in relative azimuth $Δϕ$ and relative pseudorapidity $Δη$ are studied in p+Pb collisions at sqrt{s_NN}=5.02 TeV with the ATLAS detector at LHC. The correlations are studied as a function of charged particle pT and the collision E_T^fcal summed over 3.1 < eta < 4.9 in the direction of the Pb beam. After subtracting the known sources of correlations such as dijets, resonances and momentum conservation, estimated using events with low E_T^fcal, the resulting correlations exhibit a $Δϕ$ modulation that is flat in $Δη$ out to $|Δη|=5$. The modulation is comparable in magnitude to similar modulations observed in heavy ion collisions, and can be described by a $1+2c_2\cos2Δϕ+2c_3\cos3Δϕ$ function over 0.5
description: Proceedings for the 29th Winter Workshop On Nuclear Dynamics, February 3-10, 2013, Squaw Valley, California, USA