cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Murino ussuriensis Ognev 1913
Creators: name: Koopman, Karl F.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Vespertilionidae
Murino
Murino ussuriensis

description: Murino ussuriensis Ognev, 1913. Ann. Mus. Zool. Acad. Imp. Sci. St. Petersbourg, 18:402. TYPE LOCALITY: Russia, Primorsky Krai, Kreis Imansky. DISTRIBUTION: Ussuri region, Kurile Isis, and Sakhalin (Russia); Korea. COMMENTS: Subgenus Murino. Formerly included in aurata see Maeda (1980:547) and Corbet (1978c). Japanese populations have been separated as M. silvatica.
description: Published as part of Karl F. Koopman, 1993, Order Chiroptera, pp. 137-241 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 230, DOI: 10.5281/zenodo.7353060
description: {"references": ["Maeda, K. 1980. Review on the classification of little tube-nosed bats, Murina aurata group. Mammalia, 44: 531 - 551.", "Corbet, G. B. 1978 c. The mammals of the Palaearctic region: A taxonomic review. British Museum (Natural History), London, 314 pp."]}
title: La course aux étoiles
title: La course aux étoiles
titleType: AlternativeTitle
Creators: name: Dami, Michel
name: Barton, Béatrice
name: Pasche, Gilles
Publisher: name: Radio-télévision suisse romande
Year: 1997

description: Portraits de quelques participants au Prix de Lausanne 1997. Découverte des coulisses du concours international de danse, suivi des témoignages de lauréats des années précédentes.
Mobile Multimedia Streaming Techniques : QoE and Energy Consumption Perspective
Creators: name: Hoque, Mohammad Ashraful
name: Siekkinen, Matti
name: Nurminen, Jukka K.
name: Aalto, Mika
name: Tarkoma, Sasu
Publisher: name: arXiv
Year: 2013
Subjects: subject: Multimedia (cs.MM)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Multimedia streaming to mobile devices is challenging for two reasons. First, the way content is delivered to a client must ensure that the user does not experience a long initial playback delay or a distorted playback in the middle of a streaming session. Second, multimedia streaming applications are among the most energy hungry applications in smartphones. The energy consumption mostly depends on the delivery techniques and on the power management techniques of wireless access technologies (Wi-Fi, 3G, and 4G). In order to provide insights on what kind of streaming techniques exist, how they work on different mobile platforms, their efforts in providing smooth quality of experience, and their impact on energy consumption of mobile phones, we did a large set of active measurements with several smartphones having both Wi-Fi and cellular network access. Our analysis reveals five different techniques to deliver the content to the video players. The selection of a technique depends on the mobile platform, device, player, quality, and service. The results from our traffic and power measurements allow us to conclude that none of the identified techniques is optimal because they take none of the following facts into account: access technology used, user behavior, and user preferences concerning data waste. We point out the technique with optimal playback buffer configuration, which provides the most attractive trade-offs in particular situations.
description: Accepted in Pervasive and Mobile Computing, Elsevier, May 2014
MPEC 2023-V187 : 2023 VK6
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 VK6

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Finding Linear Dependencies in Integration-By-Parts Equations: A Monte Carlo Approach
Creators: name: Kant, Philipp
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Symbolic Computation (cs.SC)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: J.2

description: The reduction of a large number of scalar integrals to a small set of master integrals via Laporta's algorithm is common practice in multi-loop calculations. It is also a major bottleneck in terms of running time and memory consumption. It involves solving a large set of linear equations where many of the equations are linearly dependent. We propose a simple algorithm that eliminates all linearly dependent equations from a given system, reducing the time and space requirements of a subsequent run of Laporta's algorithm.
description: 8 pages, 1 figure. Added references. Some minor additions
Effect of risperidone on serum IL-6 levels in individuals with schizophrenia: a systematic review and meta-analysis
Creators: name: Ramos-Méndez, Miguel Angel
name: Tovilla-Zárate, Carlos Alfonso
name: Juárez-Rojop, Isela Esther
name: Villar-Soto, Mario
name: Genis-Mendoza, Alma Delia
name: González-Castro, Thelma Beatriz
name: López-Narváez, María Lilia
name: Martínez-Magaña, José Jaime
name: Castillo-Avila, Rosa Giannina
name: Villar-Juárez, Guillermo Efrén
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Risperidone has been significant correlated with a direct effect of interleukin-6 (IL-6) levels in patients with schizophrenia. This fact allows the opportunity to link the probable immunomodulatory effect of antipsychotic medication. Specially, a proper functioning of IL-6 pathway plays a potential role in the treatment or development of schizophrenia. Our primary aim was to perform a systematic review and meta-analysis to determine the effect of risperidone on IL-6 levels in individuals with schizophrenia. Studies were identified through a systematic search using PubMed, Scopus, and Web of Science databases. The articles found were subjected to the inclusion and exclusion criteria; then, the mean and standardised differences were extracted to calculate the standardised mean differences using the CMA software. IL-6 levels in individuals with schizophrenia were compared before and after receiving risperidone as treatment. Increased levels of IL-6 levels were observed in individuals with schizophrenia who received risperidone (point estimate 0.249, lower limit 0.042, upper limit 0.455, p-value 0.018). In the Asian population sub-analysis, no statistically significant differences were observed (point estimate 0.103, lower limit −0.187, upper limit 0.215, p value 0.890). When we compared individuals with schizophrenia to the control groups, a significant increase of IL-6 levels was observed in the group with schizophrenia (point estimate 0.248, lower limit 0.024, upper limit 0.472, p-value 0.30). Risperidone appears to play an important role in IL-6 levels in schizophrenia. Potential implications of increased IL-6 levels in people with schizophrenia should be considered in future studies.KEY POINTSIncreased levels of IL-6 levels were observed in individuals with schizophrenia who received risperidone.Risperidone appears to play an important role in IL-6 levels in schizophrenia.This study could serve for future research focussed on IL-6. Increased levels of IL-6 levels were observed in individuals with schizophrenia who received risperidone. Risperidone appears to play an important role in IL-6 levels in schizophrenia. This study could serve for future research focussed on IL-6.
Neutron diffraction evidence for kinetic arrest of first-order magneto-structural phase transitions in some functional magnetic materials
Creators: name: Siruguri, V.
name: Babu, P. D.
name: Kaushik, S. D.
name: Biswas, Aniruddha
name: Sarkar, S. K.
name: Madangopal, K.
name: Chaddah, P.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Neutron diffraction measurements, performed in presence of an external magnetic field, have been used to show structural evidence for the kinetic arrest of the first-order phase transition from (i) the high temperature austenite phase to the low temperature martensite phase in the magnetic shape memory alloy Ni37Co11Mn42.5Sn9.5, (ii) the higher temperature ferromagnetic phase to the lower temperature antiferromagnetic phase in the half-doped charge ordered compound La0.5Ca0.5MnO3 and (iii) the formation of a glass-like arrested state (GLAS). The CHUF (cooling and heating under unequal fields) protocol has been used to establish phase coexistence of metastable and equilibrium states of GLAS and also to demonstrate the devitrification of the arrested metastable states in the neutron diffraction patterns. We also explore the field-temperature (H,T) phase diagram for the two compounds, which depicts the kinetic arrest line TK(H). TK is seen to increase as H increases.
description: This submission adds considerable amount of data on a new material to arXiv:1211.0238, and has been accepted as a regular paper in Journal of Physics: Condensed Matter
Clinical supervision in medical education: A citation analysis
Creators: name: Baker, M. J.
name: Maggio, L. A.
name: Dorris, C. S.
name: Uijtdehaage, S.
name: Soh, M.
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: Science Policy

description: Medical education relies on clinical supervision for critical functions, including trainee assessment and ensuring patient safety. Yet, there is substantial variance in supervision, which has led to calls for a shared definition of the concept and guidelines to inform practice. AMEE Guide No. 27 provided these desired elements and is highly cited, suggesting that translation and utilization of the Guide’s knowledge is suboptimal. This study investigates utilization by systematically characterizing citations to the Guide and by describing translation of its recommendations in relation to supervision. Citations were identified using Web of Science, Scopus, and Google Scholar. The authors coded all citations and conducted a subanalysis of studies specific to supervision. 583 studies were identified; 268 met inclusion criteria for general analysis of which 167 studies were further analyzed. Most studies reiterated the Guide’s characterization of effective supervision, but few demonstrate how these recommendations inform innovations in supervisory practice. Translation of the Guide’s recommendations regarding clinical supervision appears limited. Future research should consider the extent of knowledge translation occurring in clinical supervision literature as well as AMEE Guides. Increased attention to knowledge translation in medical education may benefit the distribution of similar knowledge products.
MPEC 2023-V188 : 2023 VL6
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 VL6

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Resonance scattering and the passage to bound states in the field of near-black-hole objects
Creators: name: Gossel, G. H.
name: Berengut, J. C.
name: Flambaum, V. V.
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We examine the spectrum of a massive scalar particle interacting with the strong gravitational field of a static, spherically symmetric object which is not quite massive enough to be a black hole. As was found in the case of massless particles, there exists a dense spectrum of long lived resonances (meta-stable states), which leads to an energy-averaged cross section for particle capture which approaches the absorption cross-section for a Schwarzschild black hole. However, the generalisation to non-zero mass introduces new phenomena, along with important qualitative changes to the scattering properties. In contrast to the massless case, there exists a spectrum of bound states with almost identical structure to that of the resonances, allowing for the possibility of radiative transitions and particle capture. The resonance lifetimes for elastic processes are parametrically larger than for massless particles, meaning the absorption cross-section approaches the black hole case faster than for massless scalars.
description: 8 pages, 5 figures
The first law of soliton and black hole mechanics in five dimensions
Creators: name: Kunduri, Hari K.
name: Lucietti, James
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We derive a mass formula and a mass variation law for asymptotically flat, stationary spacetimes, invariant under two commuting rotational symmetries, in a general five dimensional theory of gravity coupled to an arbitrary set of Maxwell fields and uncharged scalar fields. If the spacetime is everywhere regular, these mass formulas reduce to a sum of magnetic flux terms defined on its non-trivial 2-cycles. If there is a black hole, we obtain a mass variation law more general than previously obtained, which also has contributions from the 2-cycles exterior to the black hole. This can be interpreted as the first law of black hole mechanics in a background soliton containing bubbles.
description: 13 pages. v2: minor changes, references added, published version
Chaerephon puntila
Creators: name: Koopman, Karl F.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Molossidae
Chaerephon
Chaerephon puntila

description: Chaerephon puntila (Cretzschmar, 1826). In Rüppell, Atlas Reise Nordl. Afr., Zool. Säugeth., 1:69. TYPE LOCALITY: Ethiopia, Eritrea, Massawa. DISTRIBUTION: Senegal to Yemen, south to South Africa; Bioko; Pemba and Zanzibar; Comoro Isis; Aldabra and Amirante Isis (Seychelles); Madagascar. SYNONYMS: cristatus, elphicki, faini, frater, gatnbianus, hindei, langi, leucogaster, limbata, naivashae, nigri, pusillus, websteri. COMMENTS: Includes pusillus; see Hayman and Hill (1971:64).
description: Published as part of Karl F. Koopman, 1993, Order Chiroptera, pp. 137-241 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 233, DOI: 10.5281/zenodo.7353060
description: {"references": ["Hayman, R. W., and J. E. Hill. 1971. Order Chiroptera. Part 2. Pp. 1 - 73, in The mammals of Africa: An identification manual (J. Meester and H. W. Setzer, eds.) [issued 15 Jul 1971]. Smithsonian Institution Press, Washington, D. C., not continuously paginated."]}
Guter Mathematikunterricht – was verstehen wir genau darunter und wie lässt sich dies bestimmen?
Creators: name: Brunner, Esther
Publisher: name: Gesellschaft für Didaktik der Mathematik
Year: 2023
Subjects: subject: 510

description: Was guten (Mathematik-)Unterricht ausmacht, gehört in diversen Kontexten zu den intensiv diskutierten Fragen. Nicht nur Wissenschaftler*innen unterschiedlicher Disziplinen, sondern ebenso Eltern wie auch Verantwortliche des Bildungssystems und der Bildungspolitik haben Antworten dazu bereit. Diese Antworten sind jedoch nicht immer theoretisch abgestützt und empirisch überprüft. Oft handelt es sich um subjektive Theorien oder grundgelegte, unhinterfragte Prämissen, wie Renkl (2015) dies in seinem Aufsatz „Drei Dogmen guten Lernens und Lehrens“ beschreibt und darlegt, weshalb das „Konstruktivismus- und Aktivitätsdogma“, das Dogma „des guten Unterrichts“ und das „Strukturreformdogma“ (Renkl, 2015, S. 211) „alle falsch“ seien. Das erste Dogma besteht in der Annahme, dass Unterricht dann gut sei, wenn die Lernenden aktiv seien, was dazu führt, dass Lernsettings dichotom nach Aktivitätsgrad der Schüler*innen eingeteilt werden und (vordergründig) passives Lernen, wie beispielsweise einer Instruktion folgen, als negativ bewertet wird. Das zweite Dogma betrifft die Annahme, dass es den einen guten Unterricht gebe und man daher nur den „Stein der Weisen“ finden und diese Art des Unterrichtens implementieren müsse. Das dritte Dogma schließlich bezieht sich auf die Vorstellung, dass auftretende Probleme und Herausforderungen im Bildungswesen mittels einer Strukturreform in Schule und/oder Hochschule gelöst werden könnten. Doch wenn alle diese Annahmen unhaltbar sind, was wissen wir dann über guten Mathematikunterricht und wo besteht Klärungsbedarf? Diese fundamentalen Fragen greift der vorliegende Beitrag auf und versucht, sie aus der mathematikdidaktischen Perspektive heraus exemplarisch zu beleuchten, ohne dabei den Anspruch auf Vollständigkeit zu erheben.
Supercritical CO2 deposition and foaming process for fabrication of biopolyester–ZnO bone scaffolds
Creators: name: Ivanovic, Jasna
name: Rezwan, Kurosch
name: Kroll, Stephen
Publisher: name: Wiley
Year: 2018
Subjects: subject: biomedical applications
subject: biopolymers and renewable polymers
subject: composites
subject: foams
subject: 620

description: Subsequent supercritical CO2-assisted deposition and foaming process followed by in situ synthesis was used to fabricate functional polylactide (PLA) and polylactide–poly(E-caprolactone) (PLA–PCL) bone scaffolds. Deposition of zinc bis(2-thenoyltri- fluoroacetonate) as a ZnO precursor onto biopolyester substrates (30 MPa; 110 8C) was followed by fast depressurization to create cellular structure. Contact time was optimized regarding the deposition yield (2 h), while PCL content in PLA was varied (1–10 wt %). Scaffolds impregnated with the precursor were treated with hydrazine alcoholic solution to obtain biopolyester–ZnO composites. Precursor synthesis and deposition onto the scaffolds was confirmed by Fourier-transform infrared. Processed scaffolds had micron-sized pores (d50  20 lm). High open porosity (69–77%) and compressive strength values (2.8–8.3 MPa) corresponded to those reported for trabecular bone. PLA blending with PCL positively affected precursor deposition, crystallization rate, and compressive strength of the scaffolds. It also improved PLA surface roughness and wettability which are relevant for cell adhesion. ZnO improved compressive strength of the PLA scaffolds without significant effect on thermal stability. Analysis of structural, thermal, and mechanical properties of biopolyester–ZnO scaffolds testified a great potential of the obtained platforms as bone scaffolds. Proposed processing route is straightforward and ecofriendly, fast, easy to control, and suitable for processing of thermosensitive polymers.
Grundvorstellungen und Tätigkeitstheorie – (Wie) passt das zusammen?
Creators: name: Etzold, Heiko
Publisher: name: Gesellschaft für Didaktik der Mathematik
Year: 2023
Subjects: subject: Grundvorstellungen
subject: Tätigkeitstheorie
subject: Activity Theory
subject: Vygotskij
subject: 510

description: Sowohl die Grundvorstellungstheorie als auch Teile der Tätigkeitstheorie beschäftigen sich mit Begriffsbildungsprozessen, bisher jedoch vorwiegend unabhängig voneinander. Dieser Beitrag startet als Diskussionsgrundlage den Versuch einer Passung – auf theoretischer Ebene, sowie hinsichtlich möglicher Ableitungen für empirische Forschung und die Unterrichtspraxis.
The role of SE(d)-reduction for swimming in Stokes and Navier-Stokes fluids
Creators: name: Jacobs, Henry O.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Dynamical Systems (math.DS)
subject: Biological Physics (physics.bio-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: Steady swimming appears both periodic and stable. These characteristics are the very definition of limit cycles, and so we ask "Can we view swimming as a limit cycle?" In this paper we will not be able to answer this question in full. However, we shall find that reduction by SE(d)-symmetry brings us closer. Upon performing reduction by symmetry, we will find a stable fixed point which corresponds to a motionless body in stagnant water. We will then speculate on the existence of periodic orbits which are "approximately" limit cycles in the reduced system. When we lift these periodic orbits from the reduced phase space, we obtain dynamically robust relatively periodic orbits wherein each period is related to the previous by an SE(d)-phase. Clearly, an SE(d) phase consisting of nonzero translation and identity rotation means directional swimming, while non-trivial rotations correspond to turning with a constant turning radius.
description: 29 pages, accepted to the Fields institute communications series. An alternative description of the content here can be found in H.O.J, "Swimming as a limit cycle", arXiv:1211.2682
Problemlösen als Prototyp schöpferischen Denkens. Eine tätigkeitstheoretische Einordnung
Creators: name: Gebel, Inga
Publisher: name: Gesellschaft für Didaktik der Mathematik
Year: 2023
Subjects: subject: Tätigkeitstheorie
subject: Problemlösen
subject: schöpferisches Denken
subject: Activity Theory
subject: Vygotskij
subject: 510

description: U. a. im Zuge der Digitalisierung veränderten sich die Lernanforderungen an Individuen. Statt der Aneignung und Reproduktion von Traditions- bzw. Faktenwissens, werden vielmehr dynamische Kompetenzen erworben, sodass das Herstellen von Bedeutungszusammenhängen und das eigenständige Bewältigen von Problemsituationen im Mittelpunkt von Lernprozessen stehen (z. B. Giest, 2014). Mithilfe von tätigkeitstheoretischen Ansätzen (angelehnt an Köster, 1994) wird im Folgenden die bedeutende Rolle des Problemlösens u. a. als Prototyp schöpferischen Denkens herausgestellt. Abschließend wird diskutiert, inwiefern dieser Kompetenzbereich verbindlich auf unterschiedlichen Anforderungsniveaus im Mathematikunterricht gefordert werden kann.
Orientierungsgrundlagen der Lerntätigkeit nach Lompscher – Potenziale und Einordnung eines theoretischen Konzepts
Creators: name: Bruder, Regina
Publisher: name: Gesellschaft für Didaktik der Mathematik
Year: 2023
Subjects: subject: Lerntheorie
subject: Verstehen
subject: Orientierungsgrundlagen
subject: Tätigkeitstheorie
subject: Lehrerbildung (1., 2. und 3. Phase)
subject: interdisziplinär
subject: 510

description: Es gibt verschiedene Modelle mit denen versucht wird, zu erklären bzw. zu verstehen, wie das Erlernen neuer mathematischer Begriffe, Zusammenhänge, Verfahren, sowie von Vorgehensstrategien gelingt bzw. wie Fehlleistungen entstehen können. Das im deutschsprachigen Raum noch wenig rezipierte Konzept der Orientierungsgrundlagen aus der Tätigkeitstheorie (in den weiterentwickelten Darstellungen von Lompscher et al., 1985 bis hin zu Giest & Lompscher, 2006) gehört zu solchen praktikablen Modellen und sollen stärker ins Bewusstsein gerückt werden, um deren Potenziale zu verdeutlichen (vgl. auch einen Überblick in Bruder & Schmitt, 2016). Nach Giest & Lompscher müssen nicht nur Inhalte und Fertigkeiten, sondern auch Lerntätigkeiten individuell ausgebildet, also angeeignet werden. Gemeint sind neben Lerntätigkeiten zum Wissensaufbau im engeren Sinne auch solche, wie sie zum Kompetenzaufbau in den Bildungsstandards intendiert werden.
Galactic kinematics and dynamics from RAVE stars
Creators: name: Binney, James
name: Burnett, Ben
name: Kordopatis, Georges
name: Steinmetz, Matthias
name: Gilmore, Gerry
name: Bienayme, Olivier
name: Bland-Hawthorn, Joss
name: Famaey, Benoit
name: Grebel, Eva K.
name: Helmi, Amina
name: Navarro, Julio
name: Parker, Quentin
name: Reid, Warren A.
name: Seabroke, George
name: Watson, Fred
name: Williams, Mary E. K.
name: Wyse, Rosie F. G.
name: Zwitter, Tomaz
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We analyse the kinematics of ~400000 RAVE stars. We split the sample into hot and cold dwarfs, red-clump and non-clump giants. The kinematics of the clump giants are consistent with being identical with those of non-clump giants. We fit Gaussian velocity ellipsoids to the meridional-plane components of velocity of each star class and give formulae from which the shape and orientation of the velocity ellipsoid can be determined at any location. The data are consistent with the giants and the cool dwarfs sharing the same velocity ellipsoids; sigma_z rises from 21 kms in the plane to sim 55 kms at |z|=2 kpc, while sigma_r rises from 37 kms to 82 kms. At (R,z) the longest axis of one of these velocity ellipsoids is inclined to the Galactic plane by an angle ~0.8 arctan(z/R). We use a novel formula to obtain precise fits to the highly non-Gaussian distributions of v_phi components. We compare the observed velocity distributions with the predictions of a dynamical model fitted to the velocities of stars that lie within ~150 pc of the Sun and star counts towards the Galactic pole. The model accurately reproduces the non-Gaussian nature of the v_r and v_z distributions and provides excellent fits to the data for v_z at all locations. The model v_phi distributions for the cool dwarfs fit the data extremely well, while those for the hot dwarfs have displacements to low v_phi that grow with |z| from very small values near the plane. At |z|>0.5 kpc, the theoretical v_phi distributions for giants show a deficit of stars with large v_phi and the model v_r distributions are too narrow. Systematically over-estimating distances by 20 per cent introduces asymmetry into the model v_r and v_z distributions near the plane and but significantly improves the fits to the data at |z|>0.5 kpc. The quality of the fits lends credence to the assumed, disc-dominated, gravitational potential.
description: 14 pages accepted by MNRAS. Minor changes from submitted version
Bericht des Arbeitskreises Mathematik und Bildung
Creators: name: Hamann, Tanja
name: Pohlkamp, Stefan
Publisher: name: Gesellschaft für Didaktik der Mathematik
Year: 2023
Subjects: subject: 510

description: Das erste Mal seit der Herbsttagung in Siegen 2019 konnte sich der Arbeitskreis „Mathematik und Bildung“ auf der diesjährigen GDM-Tagung in Frankfurt wieder in Präsenz treffen. Dabei stießen langjährige Mitglieder des Arbeitskreises auf neue Interessierte, sodass von Anfang an ein spannender Austausch stattfand. Insbesondere für diejenigen, denen der Arbeitskreis noch nicht vertraut war, berichteten die aktuellen Sprecher*innen über die jüngsten Aktivitäten:2021 stand die eintägige Online-Herbsttagung unter dem Motto „Mathematik, Gesellschaft und Wahrheit“. In mehreren Vorträgen wurde dieses Thema aus verschiedenen bildungstheoretischen und bildungskritischen Perspektiven, aber immer in Bezug auf den Mathematikunterricht bzw. die Mathematikdidaktik betrachtet. Aufgrund des frühen Todes des langjährigen Arbeitskreissprechers Andreas Vohns wird vom 28. bis zum 30. Oktober 2022 an der Universität Siegen die Gedenktagung „Mathematische Bildung neu denken. Andreas Vohns erinnern und weiterdenken“ stattfinden. Entsprechend wird es keine Herbsttagung des Arbeitskreises geben.
Fast filtering and animation of large dynamic networks
Creators: name: Grabowicz, Przemyslaw A.
name: Aiello, Luca Maria
name: Menczer, Filippo
Publisher: name: arXiv
Year: 2013
Subjects: subject: Social and Information Networks (cs.SI)
subject: Computers and Society (cs.CY)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Detecting and visualizing what are the most relevant changes in an evolving network is an open challenge in several domains. We present a fast algorithm that filters subsets of the strongest nodes and edges representing an evolving weighted graph and visualize it by either creating a movie, or by streaming it to an interactive network visualization tool. The algorithm is an approximation of exponential sliding time-window that scales linearly with the number of interactions. We compare the algorithm against rectangular and exponential sliding time-window methods. Our network filtering algorithm: i) captures persistent trends in the structure of dynamic weighted networks, ii) smoothens transitions between the snapshots of dynamic network, and iii) uses limited memory and processor time. The algorithm is publicly available as open-source software.
description: 6 figures, 2 tables
Experimental Verification of Quantum Discord in Continuous-Variable States
Creators: name: Hosseini, S.
name: Rahimi-Keshari, S.
name: Haw, J. Y.
name: Assad, S. M.
name: Chrzanowski, H. M.
name: Janousek, J.
name: Symul, T.
name: Ralph, T. C.
name: Lam, P. K.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We introduce a simple and efficient technique to verify quantum discord in unknown Gaussian states and a certain class of non-Gaussian states. We show that any separation in the peaks of the marginal distributions of one subsystem conditioned on two different outcomes of homodyne measurements performed on the other subsystem indicates correlation between the corresponding quadratures, and hence nonzero discord. We also apply this method to non-Gaussian states that are prepared by overlapping a statistical mixture of coherent and vacuum states on a beam splitter. We experimentally demonstrate this technique by verifying nonzero quantum discord in a bipartite Gaussian and certain class of non-Gaussian states.
description: 14 pages, 6 figures
Mistaken identity: challenges with specimen identification for morphologically conservative skinks (Trachylepis) leads to taxonomic error
Creators: name: Stephens, Kirstin
name: Alexander, Graham J
name: Makhubo, Buyisile G
name: Telford, Nicolas S
name: Tolley, Krystal A
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Evolutionary Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified

description: It is commonly recognised that natural history datasets contain locality errors that can compromise the utility of those datasets. However, another source of error in these datasets is taxonomic misidentifications, and this type of error is potentially common, particularly with regards to morphologically conservative species. For example, in the African skinks, the Trachylepis striata and T. varia species complexes each contain morphologically similar species that are commonly confused, despite being genetically distinct. Some species also are partly sympatric, and misidentifications are likely to be especially problematic in those areas. Using DNA barcoding, we assessed misidentification rates between species and applied the updated identifications to known distribution maps to examine whether those maps are accurate representations. Existing banked samples and newly collected samples were DNA barcoded using the mitochondrial 16S gene and supplemented with GenBank data. Identifications were made by matching sequences using haplotype networks that included material from near type localities. The barcode-based identifications were compared with the original identifications recorded for those samples. Taxonomic error was common, particularly in areas of presumed sympatry (error for T. striata species complex: 28%; T. varia species complex: 31%) and this resulted in inaccurately represented species distributions and areas of sympatry. Areas of sympatry were, however, confirmed for T. spilogaster/T. punctatissima, T. striata/T. punctatissima and T. damarana/T. laevigata/T. varia. Our findings corroborate other studies that demonstrate taxonomic error in existing datasets is a significant, but typically unrecognised problem, particularly for morphologically conservative species. This has implications for the utility of historical collections, citizen science records and public databases used in the formulation of species distribution maps, but also for other downstream analyses that rely on these datasets.
Molossops abrasus
Creators: name: Koopman, Karl F.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Molossidae
Molossops
Molossops abrasus

description: Molossops abrasus (Temminck, 1827). Monogr. Mamm., 1:232. TYPE LOCALITY: " Brazil." DISTRIBUTION: Venezuela, Guyana, Surinam, Peru, Brazil, Bolivia, Paraguay, N Argentina. SYNONYMS: brachymeles, cerastes, mastivus. COMMENTS: Subgenus Cynomops. Called brachymeles by Cabrera (1958: 118-119) and Freeman (1981:155; who included it in the subgenus Cynomops); but see Carter and Dolan (1978:84).
description: Published as part of Karl F. Koopman, 1993, Order Chiroptera, pp. 137-241 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 234, DOI: 10.5281/zenodo.7353060
description: {"references": ["Cabrera, A. 1958. Dos felidos argentinos ineditos (Mammalia, Carnivora). Neotropica, 3 (12): 70 - 72.", "Freeman, P. W. 1981. A multivariate study of the family Molossidae (Mammalia: Chiroptera): Morphology, ecology, evolution. Fieldiana: Zoology, n. s., 7: 1 - 173.", "Carter, D. C., and P. G. Dolan. 1978. Catalog of type specimens of Neotropical bats in selected European museums. Special Publications, The Museum, Texas Tech University Press, 15: 1 - 136."]}
Overshoot in biological systems modeled by Markov chains: a nonequilibrium dynamic phenomenon
Creators: name: Jia, Chen
name: Qian, Minping
name: Jiang, Daquan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: FOS: Biological sciences

description: A number of biological systems can be modeled by Markov chains. Recently, there has been an increasing concern about when biological systems modeled by Markov chains will perform a dynamic phenomenon called overshoot. In this article, we found that the steady-state behavior of the system will have a great effect on the occurrence of overshoot. We confirmed that overshoot in general cannot occur in systems which will finally approach an equilibrium steady state. We further classified overshoot into two types, named as simple overshoot and oscillating overshoot. We showed that except for extreme cases, oscillating overshoot will occur if the system is far from equilibrium. All these results clearly show that overshoot is a nonequilibrium dynamic phenomenon with energy consumption. In addition, the main result in this article is validated with real experimental data.
description: 15 pages, 3 figures
Bericht des Arbeitskreises Lehr-Lern-Labore – Forschungsund Entwicklungskooperationen
Creators: name: Lengnink, Katja
name: Lutz, Tim
name: Strübbe, Franziska
Publisher: name: Gesellschaft für Didaktik der Mathematik
Year: 2023
Subjects: subject: 510

description: Das Präsenztreffen des Arbeitskreises Lehr-Lern-Labore auf der GDM-Tagung 2022 hatte als Schwerpunkt die Erarbeitung und Diskussion von Forschungs- und Entwicklungskooperationen zwischen Lehr-Lern-Laboren. Zehn Standorte haben dafür aus ihrem Lehr-Lern-Labor einen Gegenstand zum Arbeitskreistreffen mitgebracht, anhand dessen sie sich selbst sowie die Arbeit in ihrem Lehr-Lern-Labor vorstellten. In der Diskussionsrunde meldeten sich spontan weitere Teilnehmende zu Wort, um über die Aktivitäten oder Stand von im Aufbau befindlichen Lehr-Lern-Laboren an ihrem Standort zu berichten.
Thermal physiology of Tropical House Geckos (Hemidactylus mabouia) in a cool temperate region of South Africa.
Creators: name: Welman, S
name: Ibarzabal, I
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Physiology
subject: FOS: Biological sciences
subject: Evolutionary Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: Temperature profoundly influences the functioning of ectotherms and understanding the thermal biology of invasive species affords valuable insights regarding the suitability of different habitats. Yet, this remains an understudied aspect in the field of invasion biology. Here, we investigated the thermal physiology of the highly invasive Tropical House Gecko (Hemidactylus mabouia) in a coastal region of South Africa. The study site is near to the southernmost extent of the species’ distribution and we expected the physiology of individuals at the study site to differ compared to that of individuals inhabiting tropical regions. Relative to tropical geckos, we observed a decrease of 3.4°C in preferred body temperature (Tpref) to 24.0 °C, which was likely driven by selection for improved functioning within the cooler temperate climate. However, the lower (CTmin) and upper (CTmax) critical thermal limits were higher in geckos at the study site. CTmin was similar between sexes at 11.9 °C, whereas males had a higher CTmax by ≈ 1.9 °C reaching 39.7 °C. A broader tolerance range is typical of a highly variable climate, and we presume that the increase in CTmax allows geckos to better cope with occasional high temperatures. Further, sex-specific differences are uncommon in reptiles, but our study supports claims of improved heat tolerance in male geckos, argued to be related to their aggressive and territorial behaviour. The results also support claims that tropical geckos are more adaptable than previously thought, allowing them to invade new areas. Thereafter, their aggressive behaviour, dietary flexibility and year-round activity likely provides house geckos with a competitive advantage over some native reptiles.
Bericht des Arbeitskreises Problemlösen
Creators: name: Rott, Benjamin
name: Baumanns, Lukas
Publisher: name: Gesellschaft für Didaktik der Mathematik
Year: 2023
Subjects: subject: 510

description: Der technische Fortschritt beeinflusst die empirische Bildungsforschung seit jeher. In den 1960er Jahren waren es die ersten Tonaufzeichnungsgeräte, in den 1980er Jahren waren es die ersten statischen Videokameras, die Prozessdaten einer systematischeren Auswertung zugänglich gemacht haben. Heutzutage stehen mobile Kameras, Lehr-Lern-Labore und Eye-Tracking-Brillen zur Verfügung, die das Erheben von mehr, neuartigeren und genaueren Daten erlauben. Hinzu kommen Möglichkeiten computergestützter Auswertungen auf Basis selbstlernender Algorithmen.
Off-diagonal Bethe ansatz solutions of the anisotropic spin-1/2 chains with arbitrary boundary fields
Creators: name: Cao, Junpeng
name: Yang, Wen-Li
name: Shi, Kangjie
name: Wang, Yupeng
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The anisotropic spin-1/2 chains with arbitrary boundary fields are diagonalized with the off-diagonal Bethe ansatz method. Based on the properties of the R-matrix and the K-matrices, an operator product identity of the transfer matrix is constructed at some special points of the spectral parameter. Combining with the asymptotic behavior (for XXZ case) or the quasi-periodicity properties (for XYZ case) of the transfer matrix, the extended T-Q ansatzs and the corresponding Bethe ansatz equations are derived.
description: 30 pages, 2 tables, published version, numerical check is added. arXiv admin note: text overlap with arXiv:1306.1742
Frühes mathematisches Lernen begleiten: kindgerecht und anschlussfähig
Creators: name: Streit, Christine
Publisher: name: Gesellschaft für Didaktik der Mathematik
Year: 2023
Subjects: subject: 510

description: Es besteht weitgehend Konsens, dass das frühe Lernen von Mathematik an Alltags- und Vorerfahrungen der Kinder anknüpfen und durch adaptives Handeln der Pädagog*innen begleitet werden sollte. Die Frage, wie mathematische Lernprozesse im Kindergarten konkret angeregt und gestaltet werden können, wird dagegen mit Blick auf das Spannungsfeld „kindgerecht“ und „anschlussfähig“ durchaus kontrovers diskutiert. Im Beitrag wird zunächst exemplarisch dargelegt, wie Kinder Zugänge zur Mathematik entwickeln und warum eine professionelle Unterstützung notwendig erscheint. Anschließend werden verschiedene Förderkonzepte und -praktiken vorgestellt. Dabei wird auch die pädagogische Fachkraft in ihrer Rolle als Lernbegleiterin in den Blick genommen. Zum Schluss wird am Beispiel materialbasierter Settings aufgezeigt, welches Potential diese für frühe mathematische Bildungsprozesse besitzen, aber auch wie bedeutsam und wie herausfordernd eine professionelle Begleitung in solchen Situationen ist.
New distances to RAVE stars
Creators: name: Binney, James
name: Burnett, Ben
name: Kordopatis, Georges
name: McMillan, Paul J
name: Sharma, Sanjib
name: Zwitter, Tomaz
name: Bienayme, Olivier
name: Bland-Hawthorn, Joss
name: Steinmetz, Matthias
name: Gilmore, Gerry
name: Williams, Mary E. K.
name: Navarro, Julio
name: Grebel, Eva K.
name: Helmi, Amina
name: Parker, Quentin
name: Reid, Warren A.
name: Seabroke, George
name: Watson, Fred
name: Wyse, Rosie F. G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Probability density functions are determined from new stellar parameters for the distance moduli of stars for which the RAdial Velocity Experiment (RAVE) has obtained spectra with S/N>=10. Single-Gaussian fits to the pdf in distance modulus suffice for roughly half the stars, with most of the other half having satisfactory two-Gaussian representations. As expected, early-type stars rarely require more than one Gaussian. The expectation value of distance is larger than the distance implied by the expectation of distance modulus; the latter is itself larger than the distance implied by the expectation value of the parallax. Our parallaxes of Hipparcos stars agree well with the values measured by Hipparcos, so the expectation of parallax is the most reliable distance indicator. The latter are improved by taking extinction into account. The effective temperature absolute-magnitude diagram of our stars is significantly improved when these pdfs are used to make the diagram. We use the method of kinematic corrections devised by Schoenrich, Binney & Asplund to check for systematic errors for general stars and confirm that the most reliable distance indicator is the expectation of parallax. For cool dwarfs and low-gravity giants tends to be larger than the true distance by up to 30 percent. The most satisfactory distances are for dwarfs hotter than 5500 K. We compare our distances to stars in 13 open clusters with cluster distances from the literature and find excellent agreement for the dwarfs and indications that we are over-estimating distances to giants, especially in young clusters.
description: 20 pages accepted by MNRAS. Minor changes to the submitted version
Influence of the voltage taps position on the self-field DC and AC transport characterization of HTS superconducting tapes
Creators: name: Vojenciak, M.
name: Grilli, F.
name: Stenvall, A.
name: Kling, A.
name: Goldacker, W.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The current-voltage (I-V) curve is the basic characteristic of a superconducting wire or tape. Measuring I-V curves is generally problematic when samples have poor stabilization. Soldering voltage taps to an active part of the conductor affects the effectiveness of the local cooling and/or can be difficult to do in certain devices such as fault current limiters and cables where the tapes are closely packed. In order to overcome these problems, voltage taps can be placed outside the active area of the superconductor. We proved both by simulations and experiments that this arrangement leads to the same results as the standard four point method and it provides more detailed information for sample protection. The same arrangement can also be used for AC transport loss measurement. However in this case particular care has to be taken because the eddy current loss in the current leads contributes to the total measured loss. We used numerical simulations to evaluate the contribution of the eddy current loss to the measured AC loss. With help of simulations one can determine whether the contribution of the eddy current loss is significant and possibly optimize the current leads to reduce that loss contribution.
Crystallization kinetics in the chiral compound showing the vitrification of the smectic CA* phase for moderate cooling rates
Creators: name: Deptuch, Aleksandra
name: Juszyńska-Gałązka, Ewa
name: Jasiurkowska-Delaporte, Małgorzata
name: Drzewicz, Anna
name: Piwowarczyk, Marcin
name: Urbańska, Magdalena
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Physiology
subject: FOS: Biological sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified

description: The crystallization of the 3F5FPhF6 compound from the liquid crystalline antiferroelectric smectic CA* phase is investigated in various conditions using differential scanning calorimetry and polarizing optical microscopy. The kinetics of isothermal melt and cold crystallization is studied on the basis of the Avrami model. The kinetics of non-isothermal cold crystallization is analysed using the Ozawa model and the activation energy is determined by the Augis-Bennett, Friedman’s differential isoconversional and Matusita methods. The border temperature between the diffusion-controlled crystallization and thermodynamically-controlled crystallization is estimated. The high fragility index of 105 is determined from the α-process in the smectic CA* phase by the broadband dielectric spectroscopy. The metastable, conformationally disordered crystal phase, forming only via cold crystallization, is reported.
Absolutely continuous energy bands in the electronic spectrum of quasiperiodic ladder networks
Creators: name: Pal, Biplab
name: Chakrabarti, Arunava
Publisher: name: arXiv
Year: 2013
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The energy spectra of quasi-one dimensional quasiperiodic ladder networks are analyzed within a tight binding description. In particular, we show that if a selected set of sites in each strand of a ladder is tunnel-coupled to quantum dots attached from a side, absolutely continuous subbands can be generated in the spectrum if one tunes the dot potential and the dot-strand coupling appropriately. Typical cases with two and three strand Fibonacci ladders in the off diagonal model are discussed in details. We also discuss the possibility of re-entrant insulator-metal transition for a general n-strand ladder network when n becomes large. The observations remain valid even in the case of a disordered ladder network with the same constituents. The results are analytically exact.
description: 9 pages, 7 figures, Modified Version