cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Matrix representations for 3D strain-gradient elasticity
Creators: name: Auffray, N.
name: Quang, H. Le
name: He, Q. -C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mathematical Physics (math-ph)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: The theory of first strain gradient elasticity (SGE) is widely used to model size and non-local effects observed in materials and structures. For a material whose microstructure is centrosymmetric, SGE is characterized by a sixth-order elastic tensor in addition to the classical fourth-order elastic tensor. Even though the matrix form of the sixth-order elastic tensor is well-known in the isotropic case, its complete matrix representations seem to remain unavailable in the anisotropic cases. In the present paper, the explicit matrix representations of the sixth-order elastic tensor are derived and given for all the 3D anisotropic cases in a compact and well-structured way. These matrix representations are necessary to the development and application of SGE for anisotropic materials
description: Journal of the Mechanics and Physics of Solids (2013) (Accepted)
Editorial: Sensorimotor Foundations of Social Cognition
Creators: name: Engel, Andreas K.
name: Verschure, Paul F. M. J.
name: Kragic, Danica
name: Polani, Daniel
name: Effenberg, Alfred O.
name: König, Peter
Publisher: name: Lausanne : Frontiers Research Foundation
Year: 2022
Subjects: subject: coordination
subject: embodied cognition
subject: human-robot interaction
subject: sensorimotor coupling
subject: social cognition
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit

description: [No abstract available]
SN 2009js at the crossroads between normal and subluminous Type IIP supernovae: optical and mid-infrared evolution
Creators: name: Gandhi, P.
name: Yamanaka, M.
name: Tanaka, M.
name: Nozawa, T.
name: Kawabata, K. S.
name: Saviane, I.
name: Maeda, K.
name: Moriya, T. J.
name: Hattori, T.
name: Sasada, M.
name: Itoh, R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a study of SN 2009js in NGC 918. Multi-band Kanata optical photometry covering the first ~120 days show the source to be a Type IIP SN. Reddening is dominated by that due to our Galaxy. One-year-post-explosion photometry with the NTT, and a Subaru optical spectrum 16 days post-discovery, both imply a good match with the well-studied subluminous SN 2005cs. The plateau phase luminosity of SN 2009js and its plateau duration are more similar to the intermediate luminosity IIP SN 2008in. Thus, SN 2009js shares characteristics with both subluminous and intermediate luminosity SNe. Its radioactive tail luminosity lies between SN 2005cs and SN 2008in, whereas its quasi-bolometric luminosity decline from peak to plateau (quantified by a newly-defined parameter Delta[logL] measuring adiabatic cooling following shock breakout) is much smaller than both the others. We estimate the ejected mass of 56Ni to be low (~0.007 Msun). The SN explosion energy appears to have been small, similar to SN 2005cs. SN 2009js is the first subluminous SN IIP to be studied in the mid-infrared. It was serendipitously caught by Spitzer at very early times. In addition, it was detected by WISE 105 days later with a significant 4.6 micron flux excess above the photosphere. The infrared excess luminosity relative to the photosphere is clearly smaller than that of SN 2004dj extensively studied in the mid-infrared. The excess may be tentatively assigned to heated dust with mass ~3e-5 Msun, or to CO fundamental emission as a precursor to dust formation.
description: Accepted for publication in ApJ
The ISM and dust properties of (post-)reionization galaxies probed by ALMA and JWST
Creators: name: Faisst, Andreas
Publisher: name: Zenodo
Year: 2024

description: For obtaining a complete picture of galaxies, multi-wavelength observations are crucial to observe their stars, gas, dust, and chemical composition. With Hubble, JWST, and ALMA operating at the same time, we find ourselves in an era where we can jointly observe the UV, optical and infrared light of high redshift galaxies to describe their ISM properties in detail.

I will present first results from two new programs, which take advantage of imaging and spectroscopy from HST, JWST, and ALMA. The main goal of the ALPINE-CRISTAL JWST program is to combine high-resolution sub-mm observations with JWST/IFU spectroscopy to study the chemical compositions and dynamic properties of the ISM of z=4-6 galaxies as well as possible contributions and feedback from AGN. CHAMPS is a 1.2mm ALMA large program synergistic to JWST NIRCam and MIRI imaging to search for the most dust-obscured sources during the Epoch of Reionization.
Construction of concrete orthonormal basis for (L^2,Γ,χ)-theta functions associated to discrete subgroups of rank one in (C,+)
Creators: name: Ghanmi, Allal
name: Intissar, Ahmed
Publisher: name: arXiv
Year: 2012
Subjects: subject: Complex Variables (math.CV)
subject: Mathematical Physics (math-ph)
subject: Spectral Theory (math.SP)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: Let χbe a character on a discrete subgroup Γof rank one of the additive group (C,+). We construct a complete orthonormal basis of the Hilbert space of (L^2,Γ,χ)-theta functions. Furthermore, we show that it possesses a Hilbertian orthogonal decomposition involving the L^2-eigenspaces of the Landau operator Δ_ν; ν>0, associated to the eigenvalues νm. For m=0, the associated L^2-eigenspace is the Hilbert subspace of entire (L^2,Γ,χ)-theta functions. Corresponding orthonormal basis are constructed and the corresponding reproducing kernel can be expressed in terms of the generalized theta function of characteristic [α,0].
description: 17 pages
Deformed Heisenberg algebra with minimal length and equivalence principle
Creators: name: Tkachuk, V. M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Studies in string theory and quantum gravity lead to the Generalized Uncertainty Principle (GUP) and suggest the existence of a fundamental minimal length which, as was established, can be obtained within the deformed Heisenberg algebra. The first look on the classical motion of bodies in a space with corresponding deformed Poisson brackets in a uniform gravitational field can give an impression that bodies of different mass fall in different ways and thus the equivalence principle is violated. Analyzing the kinetic energy of a composite body we find that the motion of its center of mass in the deformed space depends on some effective parameter of deformation. It gives a possibility to recover the equivalence principle in the space with deformed Poisson brackets. and thus GUP is reconciled with the equivalence principle. We also show that the independence of kinetic energy on composition leads to the recovering of the equivalence principle in the space with deformed Poisson brackets.
description: 11 pages
MPEC 2023-L75 : 2023 LJ1
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 LJ1

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.
Global bundle adjustment with variable orientation point distance for precise mars express orbit reconstruction
Creators: name: Bostelmann, Jonas
name: Heipke, Christian
Publisher: name: Katlenburg-Lindau : Copernicus Publications
Year: 2016
Subjects: subject: Bundle adjustment
subject: HRSC
subject: Mapping
subject: Mars
subject: Orbit modeling
subject: Planetary
subject: Cameras
subject: Martian surface analysis
subject: Orbits
subject: Photogrammetry
subject: Remote sensing
subject: Trajectories
subject: Bundle adjustments
subject: Stereo image processing
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften
subject: Dewey Decimal Classification::500 | Naturwissenschaften::520 | Astronomie, Kartographie

description: The photogrammetric bundle adjustment of line scanner image data requires a precise description of the time-dependent image orientation. For this task exterior orientation parameters of discrete points are used to model position and viewing direction of a camera trajectory via polynomials. This paper investigates the influence of the distance between these orientation points on the quality of trajectory modeling. A new method adapts the distance along the trajectory to the available image information. Compared to a constant distance as used previously, a better reconstruction of the exterior orientation is possible, especially when image quality changes within a strip. In our research we use image strips of the High Resolution Stereo Camera (HRSC), taken to map the Martian surface. Several experiments on the global image data set have been carried out to investigate how the bundle adjustment improves the image orientation, if the new method is employed. For evaluation the forward intersection errors of 3D points derived from HRSC images, as well as their remaining height differences to the MOLA DTM are used. In 13.5 % (515 of 3,828) of the image strips, taken during this ongoing mission over the last 12 years, high frequency image distortions were found. Bundle adjustment with a constant orientation point distance was able to reconstruct the orbit in 239 (46.4 %) cases. A variable orientation point distance increased this number to 507 (98.6 %).
title: Berlusconismus
Creators: name: Kasslatter, Michael
Year: 2023

description: Diese Masterarbeit untersucht die unterschiedlichen Wahrnehmungen des Politikstils des italienischen Politikers Silvio Berlusconi, auch bekannt als Berlusconismus. Die Analyse behandelt unterschiedliche Betrachtungsweisen des Berlusconismus und den möglichen Einfluss geographischer und kultureller Aspekte bei der Charakterisierung dieses Politikstils durch Akteur*innen aus Wissenschaft und Journalismus. Es werden Innen- und Außenperspektiven untersucht, wobei ein Teil der Akteur*innen aus Italien und der andere Teil aus deutschsprachigen Ländern der EU stammt. Die Studie betrachtet die unterschiedlichen Interpretationen des Berlusconismus, von Liberalismus über Populismus bis zu hybriden Stilarten, die sich teilweise unterscheiden und widersprechen. Für diesen Zweck werden wissenschaftliche Publikationen sowie journalistische Texte über den Berlusconismus mittels der Qualitativen Inhaltsanalyse nach Mayring untersucht. Die Studie zielt darauf ab, die Ursachen und Hintergründe dieser unterschiedlichen und zum Teil widersprüchlichen Betrachtungsweisen und Einordnungen zu ergründen, wobei der Fokus auf der Frage liegt, wie und warum die Akteur*innen den Politikstil des Berlusconismus unterschiedlich charakterisieren und einordnen. Das Ziel dieser Arbeit ist es, einen Beitrag zum Verständnis dieser politischen Epoche in Italien zu leisten und Aufschluss über die Dynamiken in der Innen- und Außenbetrachtung dieses italienischen Phänomens zu geben. Des Weiteren wird untersucht, welche Faktoren, Dynamiken und Einflüsse die Aussagen der Akteur*innen prägen.
description: This master's thesis examines the different conceptualizations and perceptions of the political style of Italian politician Silvio Berlusconi, also known as Berlusconism. The analysis focuses on the various perspectives and the role of geographical and cultural characteristics in the construction of this political style by actors from academia and journalism. Internal and external perspectives are studied, where some of the actors are from Italy and others from the German- speaking countries of the EU. The thesis considers the diversity of perceptions and characterizations of Berlusconism, which range from liberalism to populism to hybrid styles and diverge in some cases. It addresses the wide range of assessments that occur in scholarly and journalistic discussions. The objective of this study is to analyse the causes and backgrounds of these different and partly contradictory ways of looking at and classifying politics. The focus is on the question of how and why actors characterise and classify the political style of Berlusconism in different ways. Both academic studies on Berlusconism and journalistic contributions are analysed. The objective of this paper is to contribute to the understanding of this political period in Italy and to highlight the dynamics in the internal and external view of this Italian phenomenon. Furthermore, it will be examined which factors, dynamics and influences shape the statements of the actors.
Compact cold atom gravimeter for field applications
Creators: name: Bidel, Yannick
name: Carraz, Olivier
name: Charrière, Renée
name: Cadoret, Malo
name: Zahzam, Nassim
name: Bresson, Alexandre
Publisher: name: arXiv
Year: 2013
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We present a cold atom gravimeter dedicated to field applications. Despite the compactness of our gravimeter, we obtain performances (sensitivity 42 microGal/Hz^0.5, accuracy 25 microGal) close to the bestgravimeters. We report gravity measurements in an elevator which led us to the determination of the Earth's gravity gradient with a precision of 4 E. These measurements in a non-laboratory environment demonstrate that our technology of gravimeter is enough compact, reliable and robust for field applications. Finally, we report gravity measurements in a moving elevator which open the way to absolute gravity measurements in an aircraft or a boat.
title: Investigating resistance mechanisms to Phytophthora cactorum in strawberry and apple
Creators: name: Luberti, Matteo
Publisher: name: University of Reading
Year: 2025

description: Apple (Malus x domestica; Md) and strawberry (Fragaria x ananassa; Fxa) are two of the most culturally and economically important cultivated fruit varieties in the world. Phytophthora cactorum (Pc) isolates cause substantial damages in both plants’ growing systems. Its ability to spread infection through waterlogged orchard soils as well as through the irrigation systems used in tabletop strawberry cultivation, coupled with the lack of available chemical management options, reinforce the need for resistant varieties. Despite the extended resistance breeding efforts in both hosts, and the recent mapping of resistance in Fxa, much remains to be elucidated of the mechanisms underlying plant resistance to this pathogen. Resistance in an apple was mapped using a bi-parental population generated from the cross of two popular rootstock varieties (‘M.27’ and ‘M.116’), revealing the presence of a largeeffect quantitative trait locus (QTL) on chromosome 6 (MdRPc1). Moreover, a preliminary genome-wide association study (GWAS) performed on a panel of 99 apple accessions from the wider germplasm confirmed the presence of the MdRPc1 locus, as well as two additional loci (MdRPc2 and MdRPc3) on chromosomes 5 and 15. The transcriptional response to infection was studied in both hosts through the whole-transcriptome sequencing of root tissue samples of susceptible and resistant varieties from time course inoculation experiments. This allowed to identify pathways regulated upon Pc infection, as well as candidate resistance/susceptibility genes. Finally, the transcriptome analysis of Pc during apple infection revealed the regulation of a large effector array and highlighted candidate pathogenicity genes. Further, comparisons with the previously published transcriptome analysis of a Pc isolate during infection of strawberry has provided insights into factors determining host specificity. Taken together these findings help elucidate the mechanisms underlying host-Pc interactions and provide valuable data to be used in future resistance breeding efforts.
Nachhaltigkeitsbezogenes Facharbeiterhandeln im Kontext einer Green Economy und zunehmender Digitalisierung
Creators: name: Nagel, Stefan
Publisher: name: Bielefeld : wbv
Year: 2020
Subjects: subject: Nachhaltigkeit
subject: Digitalisierung
subject: Ressourceneffizienz
subject: BBNE
subject: BNE
subject: Berufswissenschaften
subject: Green Economy
subject: Berufsbildung
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::370 | Erziehung, Schul- und Bildungswesen
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Industrielle Metallberufe werden zunehmend mit den Anforderungen einer nach-haltigen Entwicklung und den damit verbundenen Ansätzen unternehmerischer Gesellschaftsverantwortung (Corporate Social Responsibility, CSR) konfrontiert. Damit einhergehend erfolgt ein sukzessives „Greening der Berufe“, welches die gesamteArbeitswelt und die damit verbundenen Berufsstrukturen betrifft. Gleichzeitig sorgen Fachkräfte in ihrem Arbeitsumfeld aufgrund voranschreitender Digitalisierung für eine digitale Systembildung (Industrie 4.0), die augenscheinlich in einem antinomischen Gefüge zur nachhaltigen Entwicklung steht. Dieser Beitrag nimmt diese Entwicklungen auf, setzt sich mit dem nachhaltigen beruflichen Handeln in industriellen Metallberufen auseinander und veranschaulicht anhand empirischer Fallbeispiele, wie Fachkräfte Ansätze der Digitalisierung und der nachhaltigen Produktionsynergetisch zusammenbringen, um Umweltentlastungspotenziale auszuschöpfen.
Simulation of nanostructure-based high-efficiency solar cells: challenges, existing approaches and future directions
Creators: name: Aeberhard, Urs
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Many advanced concepts for high-efficiency photovoltaic devices exploit the peculiar optoelectronic properties of semiconductor nanostructures such as quantum wells, wires and dots. While the optics of such devices is only modestly affected due to the small size of the structures, the optical transitions and electronic transport can strongly deviate from the simple bulk picture known from conventional solar cell devices. This review article discusses the challenges for an adequate theoretical description of the photovoltaic device operation arising from the introduction of nanostructure absorber and/or conductor components and gives an overview of existing device simulation approaches.
description: Invited paper, accepted for publication in IEEE Journal of Selected Topics in Quantum Electronics
Descriptive complexity of #AC0 functions
Creators: name: Durand, Arnaud
name: Haak, Anselm
name: Kontinen, Juha
name: Vollmer, Heribert
Publisher: name: Saarbrücken : Dagstuhl Publishing
Year: 2016
Subjects: subject: Arithmetic circuits
subject: Counting classes
subject: Fagin's theorem
subject: Finite model theory
subject: Skolem function
subject: Computational complexity
subject: Logic circuits
subject: Arithmetic circuit
subject: Arithmetic computations
subject: Counting class
subject: Descriptive complexity
subject: Function variables
subject: Inclusion structure
subject: Computer circuits
subject: Konferenzschrift
subject: Dewey Decimal Classification::000 | Allgemeines, Wissenschaft::000 | Informatik, Wissen, Systeme::004 | Informatik
subject: Dewey Decimal Classification::500 | Naturwissenschaften::510 | Mathematik

description: We introduce a new framework for a descriptive complexity approach to arithmetic computations. We define a hierarchy of classes based on the idea of counting assignments to free function variables in first-order formulae. We completely determine the inclusion structure and show that #P and #AC0 appear as classes of this hierarchy. In this way, we unconditionally place #AC0 properly in a strict hierarchy of arithmetic classes within #P. We compare our classes with a hierarchy within #P defined in a model-theoretic way by Saluja et al. We argue that our approach is better suited to study arithmetic circuit classes such as #AC0 which can be descriptively characterized as a class in our framework.
A Specialised Antenatal Music Therapy (SAMT) programme for pregnant women with mental health conditions: A mixed-methods proof-of-concept study in Ireland
Creators: name: Cheung, Pui Sze
name: Mohamad, Mas Mahady
name: Fitzpatrick, Katie
name: Murphy Tighe, Sylvia
name: Clifford, Amanda M.
name: McCaffrey, Tríona
Publisher: name: University of Limerick
Year: 2024
Subjects: classificationCode: 3603
subject: Music
classificationCode: 42
subject: Health sciences
subject: FOS: Health sciences

description: Introduction: Perinatal mental health has a long-term impact on maternal and infant well-being. Non-pharmacological treatment options are needed for pregnant women and emerging evidence has shown the potential of music therapy to improve perinatal mental health and antenatal attachment. However, research is lacking on individual music therapy for pregnant women with mental health conditions and formal music therapy services are currently absent within perinatal mental health care in Ireland. This mixed-methods, proof-of-concept study aimed to assess the feasibility and preliminary evidence on the effectiveness of a specialised antenatal music therapy (SAMT) programme for pregnant women attending the Specialist Perinatal Mental Health Service (SPMHS).
Method: Pregnant women between 25 and 33 weeks gestation with various mental health conditions were recruited through the SPMHS to receive six in-person or online sessions of SAMT. Feasibility outcomes included retention, adherence, and fidelity.\ Assessment of participants’ wellbeing, anxiety, and antenatal attachment were conducted before and after SAMT and each session. Semi-structured interviews were conducted and analysed using thematic analysis.
Results: Twelve pregnant women were included and nine completed SAMT and assessments, demonstrating a 75% retention rate. High levels of adherence and fidelity were reported. Significant improvements were observed in participants’ well-being, anxiety levels, and antenatal attachment. Qualitative findings highlighted the therapeutic benefits, the accessibility and challenges of the online setting, distinctive therapeutic experiences, and participants’ recommendations.
Discussion: The findings suggest implementing SAMT within the Irish SPMHS is feasible and beneficial. The study offers insights into the therapeutic mechanisms of SAMT and supports the progression to a larger trial.
Quintom potentials from quantum cosmology using the FRW cosmological model
Creators: name: Socorro, J.
name: Romero, Priscila
name: Pimentel, Luis O.
name: Aguero, M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences
subject: 83C10, 83C15, 83F05

description: We construct the quintom potential of dark energy models in the framework of spatially flat Friedmann-Robertson Walker universe in the inflationary epoch, using the Bohm like approach, known as amplitude-real-phase. We find some potentials for which the wave function of the universe is found analytically and we have obtained the classical trajectories in the inflation era.
description: Latex2e, 10 pages, 1 figure
title: Umgang mit Tod und Trauer in der Schule - (k)ein Tabu?
Creators: name: Weiss, Johanna Lisa
Year: 2023

description: Die vorliegende Arbeit befasst sich mit dem Thema „Umgang mit Tod und Trauer in der Schule“ und zeigt auf, dass diese Themen auch vor der Institution Schule nicht Halt machen. Es sollen sowohl Pädagog*innen für die Auseinandersetzung in der pädagogischen Praxis sensibilisiert und ihnen eine kleine Orientierungshilfe geboten werden, als auch einen kleinen Beitrag gegen das gesellschaftliche Tabu, gegen die Nichtthematisierung von Tod und Trauer, gegen das Schweigen leisten. Der Verlust eines geliebten Menschen oder auch der Tod eines/r Mitschüler*in oder einer Lehrperson kann für Kinder und Jugendliche, als auch für Erwachsene, eine sehr belastende Erfahrung darstellen. Diese Arbeit soll einen Überblick über die Wünsche, Bedürfnisse und den Umgang mit derartigen Situationen bieten. Lehrkräfte können eine hierbei eine wichtige Stütze bieten, indem sie einfühlsam auf die Bedürfnisse der betroffenen Schüler*innen eingehen und für eine offene und vertrauensvolle Atmosphäre im Klassenzimmer sorgen. Es wird der Frage nachgegangen, wie einst trauernde Personen den Umgang, die Begleitung und Unterstützung in der Schule erlebt und erfahren haben und welche Aspekte erwünscht oder vermisst gewesen waren. Durch persönlich verschriftliche Erfahrungsberichte und die Auswertung dieser, mit Hilfe der qualitativen Inhaltsanalyse, wird versucht, der Frage nach dem Umgang, der Begleitung und der Unterstützung unter dem Aspekt ihrer Trauer nach einem Todesfall im schulischen Umfeld nachzugehen.
description: This master thesis focuses on the subject "Dealing with death and mourning in school" and shows that these topics do not stop at the institution of school. It is intended to sensitize educators for the discussion in the pedagogical practice and to offer them a small orientation aid, as well as to contribute a small piece against the silence around the topics of death and mourning within our society. The loss of a loved one or the death of a classmate or a teacher, can be a very stressful experience for children and young people as well as for adults. This paper is intended to provide an overview of the desires, needs, and strategies of dealing with such situations. Teachers can provide important support in this process by sensitively responding to the needs of the affected students and ensuring an open and trusting atmosphere in the classroom. The aim ist to pursue the question of how mourners once expierenced the interaction, the accompaniment and support in school and which aspects were desired or missed. Through personal written reports of experiences and the evaluation of these, with the help of qualitative content analysis, it is attempted to pursue the question of the handling, the accompaniment and the support under the aspect of their grief after a death in the school environment.
Instantons on Calabi–Yau cones
Creators: name: Sperling, Marcus
Publisher: name: Amsterdam : Elsevier
Year: 2015
Subjects: subject: Sasakian geometry
subject: Hermitian Yang–Mills instantons
subject: Holomorphic structure
subject: Nuclear physics
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: The Hermitian Yang–Mills equations on certain vector bundles over Calabi–Yau cones can be reduced to a set of matrix equations; in fact, these are Nahm-type equations. The latter can be analysed further by generalising arguments of Donaldson and Kronheimer used in the study of the original Nahm equations. Starting from certain equivariant connections, we show that the full set of instanton equations reduce, with a unique gauge transformation, to the holomorphicity condition alone.
Emergence of the advancing neuromechanical phase in a resistive force dominated medium
Creators: name: Ding, Yang
name: Sharpe, Sarah S.
name: Wiesenfeld, Kurt
name: Goldman, Daniel I.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Undulatory locomotion, a gait in which thrust is produced in the opposite direction of a traveling wave of body bending, is a common mode of propulsion used by animals in fluids, on land, and even within sand. As such it has been an excellent system for discovery of neuromechanical principles of movement. In nearly all animals studied, the wave of muscle activation progresses faster than the wave of body bending, leading to an advancing phase of activation relative to the curvature towards the tail. This is referred to as "neuromechanical phase lags" (NPL). Several multi-parameter neuromechanical models have reproduced this phenomenon, but due to model complexity the origin of the NPL has proved difficult to identify. Here we use perhaps the simplest model of undulatory swimming to accurately predict the NPL during sand-swimming by the sandfish lizard, with no fitting parameters. The sinusoidal wave used in sandfish locomotion, the friction-dominated and non-inertial granular resistive force environment, and the simplicity of the model allow detailed analysis, and reveal the fundamental mechanism responsible for the phenomenon: the combination of synchronized torques from distant points on the body and local traveling torques. This general mechanism should help explain the NPL in organisms in other environments; we therefore propose that sand-swimming could be an excellent system to quantitatively generate and test other neuromechanical models of movement. Such a system can also provide guidance for the design and control of robotic undulatory locomotors in complex environments.
description: PNAS 2013 ; published ahead of print June 3, 2013
Reducing Math Anxiety in School Children: A Systematic Review of Intervention Research
Creators: name: Balt, Miriam
name: Börnert-Ringleb, Moritz
name: Orbach, Lars
Publisher: name: Lausanne : Frontiers Media
Year: 2022
Subjects: subject: children
subject: intervention
subject: math anxiety
subject: review
subject: school
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::370 | Erziehung, Schul- und Bildungswesen

description: Recent studies indicate that math anxiety (MA) can already be found in school-aged children. As early MA depicts a potential risk for developing severe mathematical difficulties and impede the socio-emotional development of children, distinct knowledge about how to reduce MA in school-aged children is of particular importance. Therefore, the goal of this systematic review is to summarize the existing body of research on MA interventions for children by identifying the approaches, designs, and characteristics as well as the effects of the interventions. Copyright © 2022 Balt, Börnert-Ringleb and Orbach.
Flux-based classification of reactions reveals a functional bow-tie organization of complex metabolic networks
Creators: name: Singh, Shalini
name: Samal, Areejit
name: Giri, Varun
name: Krishna, Sandeep
name: Raghuram, Nandula
name: Jain, Sanjay
Publisher: name: arXiv
Year: 2012
Subjects: subject: Molecular Networks (q-bio.MN)
subject: FOS: Biological sciences

description: Unraveling the structure of complex biological networks and relating it to their functional role is an important task in systems biology. Here we attempt to characterize the functional organization of the large-scale metabolic networks of three microorganisms. We apply flux balance analysis to study the optimal growth states of these organisms in different environments. By investigating the differential usage of reactions across flux patterns for different environments, we observe a striking bimodal distribution in the activity of reactions. Motivated by this, we propose a simple algorithm to decompose the metabolic network into three sub-networks. It turns out that our reaction classifier which is blind to the biochemical role of pathways leads to three functionally relevant sub-networks that correspond to input, output and intermediate parts of the metabolic network with distinct structural characteristics. Our decomposition method unveils a functional bow-tie organization of metabolic networks that is different from the bow-tie structure determined by graph-theoretic methods that do not incorporate functionality.
description: 11 pages, 6 figures, 1 table
Off-diagonal ekpyrotic scenarios and equivalence of modified, massive and/or Einstein gravity
Creators: name: Vacaru, Sergiu I.
Publisher: name: Amsterdam : Elsevier
Year: 2016
Subjects: subject: Massive gravity
subject: Modified gravity
subject: Off-diagonal cosmological solutions
subject: Ekpyrotic and little rip universe
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Using our anholonomic frame deformation method, we show how generic off-diagonal cosmological solutions depending, in general, on all spacetime coordinates and undergoing a phase of ultra-slow contraction can be constructed in massive gravity. In this paper, there are found and studied new classes of locally anisotropic and (in)homogeneous cosmological metrics with open and closed spatial geometries. The late time acceleration is present due to effective cosmological terms induced by nonlinear off-diagonal interactions and graviton mass. The off-diagonal cosmological metrics and related Stückelberg fields are constructed in explicit form up to nonholonomic frame transforms of the Friedmann–Lamaître–Robertson–Walker (FLRW) coordinates. We show that the solutions include matter, graviton mass and other effective sources modeling nonlinear gravitational and matter fields interactions in modified and/or massive gravity, with polarization of physical constants and deformations of metrics, which may explain certain dark energy and dark matter effects. There are stated and analyzed the conditions when such configurations mimic interesting solutions in general relativity and modifications and recast the general Painlevé–Gullstrand and FLRW metrics. Finally, we elaborate on a reconstruction procedure for a subclass of off-diagonal cosmological solutions which describe cyclic and ekpyrotic universes, with an emphasis on open issues and observable signatures.
Nucleon resonance production in $K^+N$ interactions
Creators: name: Liu, Bo-Chao
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: In this work, we discuss the possibility of studying nucleon resonances in the $K^+N$ interactions. Based on our model calculations, it is found that the hyperon exchange plays an important role for the excitation of nucleon resonances in the $K^+N$ interactions. Therefore, the studies on nucleon resonance production in the $K^+N$ interactions can offer us valuable information about the couplings of nucleon resonances with strange particles. By selecting suitable decay channels of nucleon resonances, some reactions are also suitable to look for missing resonances.
description: Talk presented at XI International Conference on Hypernuclear and Strange Particle Physics (HYP2012), Oct.1-5, 2012, Barcelona (Spain)
title: Die Rolle von Zinsen im Kontext der Bewertung von Rückstellungen (UGB vs IFRS)
Creators: name: Kröpfl, Raphaela
Year: 2023

description: Die vorliegende Master Thesis beschäftigt sich mit der Zinssatz-Problematik im Zusammenhang mit der Bewertung von Rückstellungen, insbesondere Sozialkapitalrückstellungen, nach nationalen sowie internationalen Rechnungslegungsvorschriften. In der gegenständlichen Arbeit wird vorerst auf die Rolle der Zinsen in der Bilanz eingegangen und die Auswirkungen von Abzinsungseffekten dargestellt. Weiters werden die Gemeinsamkeiten als auch Unterschiede der nationalen und internationalen Rechnungslegungsvorschriften aufgezeigt. Durch die unausweichliche Inflation scheint der jahrelangen Niedrigzinspolitik ein Ende gesetzt worden zu sein. Die zurzeit hoch volatilen Zinssätze stellen die Abschlussersteller vor Herausforderungen. Bereits geringe Änderungen des Rechnungszinssatzes, welcher sowohl als versicherungs- als auch finanzmathematischer Parameter dient, können erhebliche Auswirkungen auf den Sozialkapitalrückstellungsposten in der Bilanz haben. Aufgrund unterschiedlicher Bilanzierungswahlrechte kann dies ein nicht der Realität entsprechendes Bild vermitteln. Die Vergleichbarkeit von Jahresabschlüssen als auch Verlässlichkeit betreffend der Aussagekraft könnte sich somit schwierig gestalten.
title: Фиктивный характер (псевдо)мемуарного текста как эстетическая программа. Еще раз о Петербургских Зимах Георгия Иванова
Creators: name: Lazzarin, Francesca
Publisher: name: AvtobiografiЯ
Year: 2012

description: This paper aims to provide an in-depth analysis of one of the most controversial memoirs of XX century Russian literature: Petersburg Winters by Georgy Ivanov. For a long time, this original prose work aroused bitter controversy because of its lack of veracity. The unusual presence of fanciful parts and documentary materials in Petersburg Winters is, in fact, the result of a conscious literary strategy. This experiment involves the whole corpus of Ivanov’s prose, where autobiography constantly merges with fiction.
Ivanov’s purpose is to represent the death of both pre-revolutionary Petersburg (where he lived before his emigration in 1922) and its literature during the first years of the Soviet era. Thus the theatralization of reality, the surrealism of everyday life and the presence of a sort of fantastic realism contribute to create a lively and, somewhat, faithful portrait of a ‘lost time’ when life and literature were constantly joined together. Moreover, Ivanov’s work can be examined in the broader context of the Russian prose of the Twenties: the same kind of device, which are often connected with the Formalist theories, can be found in Soviet as well as in émigré literature.
N=4 supersymmetric AdS(5) vacua and their moduli spaces
Creators: name: Louis, Jan
name: Triendl, Hagen
name: Zagermann, Marco
Publisher: name: New York : Springer
Year: 2015
Subjects: subject: Maxwell-Einstein Supergravity
subject: Gauged Supergravity
subject: 5 Dimensions
subject: Field-Theories
subject: Multiplets
subject: Manifolds
subject: Spectrum
subject: Gaugings
subject: Extended Supersymmetry
subject: Supergravity Models
subject: Ads-Cft Correspondence
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We classify the N = 4 supersymmetric AdS(5) backgrounds that arise as solutions of five-dimensional N = 4 gauged supergravity. We express our results in terms of the allowed embedding tensor components and identify the structure of the associated gauge groups. We show that the moduli space of these AdS vacua is of the form SU(1, m)/ (U(1) x SU(m)) and discuss our results regarding holographically dual N = 2 SCFTs and their conformal manifolds.
Accurate diagnosis of liver diseases through the application of deep convolutional neural network on biopsy images
Creators: name: Podder, Soumyajit
name: Roy, Arijit
name: Mallik, Abhishek
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 460299
subject: Artificial intelligence not elsewhere classified

description: Abstract: Accurate detection of non-alcoholic fatty liver disease (NAFLD) through biopsies is challenging. Manual detection of the disease is not only prone to human error but is also time-consuming. Using artificial intelligence and deep learning, we have successfully demonstrated the issues of the manual detection of liver diseases with a high degree of precision. This article uses various neural network-based techniques to assess non-alcoholic fatty liver disease. In this investigation, more than five thousand biopsy images were employed alongside the latest versions of the algorithms. To detect prominent characteristics in the liver from a collection of Biopsy pictures, we employed the YOLOv3, Faster R-CNN, YOLOv4, YOLOv5, YOLOv6, YOLOv7, YOLOv8, and SSD models. A highlighting point of this paper is comparing the state-of-the-art Instance Segmentation models, including Mask R-CNN, U-Net, YOLOv5 Instance Segmentation, YOLOv7 Instance Segmentation, and YOLOv8 Instance Segmentation. The extent of severity of NAFLD and non-alcoholic steatohepatitis was examined for liver cell ballooning, steatosis, lobular, and periportal inflammation, and fibrosis. Metrics used to evaluate the algorithms' effectiveness include accuracy, precision, specificity, and recall. Improved metrics are achieved by optimizing the hyperparameters of the associated models. Additionally, the liver is scored in order to analyse the information gleaned from biopsy images. Statistical analyses are performed to establish the statistical relevance in evaluating the score for different zones.
title: Molecular biology of cell reactions to surface topography
Creators: name: Li, Tong-Tong
Publisher: name: University of Glasgow
Year: 1998
Subjects: subject: Molecular biology, cellular biology.

description: The contact of cells and surface topography plays a major role in the control of cell growth, differentiation, tissue morphogenesis and pattern formation. The surface topography on which cells grow may alter their cellular interactions and this in turn may affect gene expression. In this study, I identify differentially expressed genes on macrophage-like cells cultured on planar or grooved fused quartz substrata produced by microfabrication. The mRNA differential display method was applied to compare mRNAs from the cells which were cultured on different surface. The differentially expressed genes were detected by reverse transcribed mRNA into cDNA which were used as the template in the polymerase chain reaction (PCR). By using mRNA fingerprinting method, Northern blot confirmation and antibody staining, I found that c-kit, Mouse tctex-1 (t-complex testis expressed 1), alpha-N-acetylgalactosaminidase, elastin, NRF1 genes and four unknown DNAs are considerably enhanced by contact with topography. These results indicate that surface topography can regulate and stimulate some specific genes.
title: “О себе я стараюсь говорить поменьше, но все-таки говорю”: самоидентификация и память в русском женском автобиографическом письме конца XIX – первой половины ХХ вв
Creators: name: Rodigina, Natalia
name: Saburova, Tatiana
Publisher: name: AvtobiografiЯ
Year: 2012

description: The present article focuses on the strategies related to self-identification and the creation of the ‘Self’ in the autobiographical memoirs of Elizaveta Vodovozova and Ariadna Tyrkova-Williams, two representatives of the generations of the ‘Sixties’ and the ‘Eighties’ in nineteenth century Russia. The authors reveal the different forms of autobiographical self-representations, the links between individuality and the social, political, cultural communities (real and imagined) in the Russian women’s autobiographies; the role and meanings of such notions as ‘family’, ‘generation’, ‘intelligentsia’, and ‘nation’ in the construction of identity. The authors discuss the hierarchy and specificity of identities, which were reflected in the memoirs. In particular, they focus on generational, professional, and gender identity, accepting the concept of multiple identities; the connection between ‘private’ and ‘public’ in the Russian women’s autobiographical texts, the methods of incorporating private life into history are also described in the text.
Innovative logistics concepts for a versatile and flexible manufacturing of lot size one
Creators: name: Bozkurt, Ali
name: Hagg, Manuel
name: Schulz, Robert
Publisher: name: Hannover : publish-Ing.
Year: 2020
Subjects: subject: Production logistics control
subject: automobile production
subject: material handling
subject: versatile logistics
subject: economic efficiency
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Due to the high amount of car models and the increasing number of variations in the premium car segment, production logistics in the automobile industry will face new challenges. Conventional logistics concepts such as Henry Ford and Frederick Taylor’s conveyor technique will become rare. While conveyors are best-practice for high output and economical production, they are inflexible with high variations. Moreover, an assortment of different parts have to be provided at the line, which results in space constraints and inefficiency in increasing product variety. Hence, it is necessary to focus on contemporary logistics concepts and equipment in order to cope with customer demand when producing in lot size one. Therefore, various logistics concepts and components have been developed by the Institute of Mechanical Handling and Logistics (IFT) of the University of Stuttgart over recent years. The new logistics concepts are more versatile and enable a more flexible and changeable production logistics for a wide range of different products. The aim of this study is to provide an overview of the current situation of the innovative production logistics concepts and describe possibilities for further developments.
New Signals for Doubly-Charged Scalars and Fermions at the Large Hadron Collider
Creators: name: Babu, K. S.
name: Patra, Ayon
name: Rai, Santosh Kumar
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Several extensions of the Standard Model have light doubly-charged Higgs bosons in their particle spectrum. The supersymmetric versions of these models introduce fermionic superpartners of these doubly-charged Higgs bosons, the Higgsinos, which also remain light. In this work we analyze a new collider signal resulting from the pair production and decay of a light doubly-charged Higgsino to an even lighter doubly-charged Higgs boson. We focus on the minimal left-right supersymmetric model with automatic R-parity conservation, which predicts such a light doubly-charged Higgs boson and its Higgsino partner at the TeV scale, which are singlets of SU(2)_L. We investigate the distinctive signatures of these particles with four leptons and missing transverse energy in the final state at the Large Hadron Collider and show that the discovery reach for both particles can be increased in this channel.
description: 28 pages, 9 figures
Technik statt Inhalt? Zu den Orientierungen von Stencil-Aktivisten
Creators: name: Pilz, Christoph
Publisher: name: Leipzig : Leipziger Forschungsgruppe Soziales e.V.
Year: 2013
Subjects: subject: Street Art
subject: Stencils
subject: Frame
subject: Practice
subject: Schablonengraffiti
subject: Orientierung
subject: Praktiken
subject: Streetart
subject: Graffito
subject: Schablonengraffito
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie

description: Den Ausgangspunkt der Arbeit bilden die räumlichen Orientierungen von Stencil-Aktivisten. Wie wird der öffentliche Raum durch Street Artists angeeignet? Die Studie kommt in diesem Zusammenhang zu einem ganz unerwarteten Ergebnis. Die Praktiken sind stark auf die Technik der Stencilproduktion und -verbreitung fokussiert. Inhaltliche Ansprüche und Raumaneignung haben eine untergeordnete Relevanz.
Emissionspektroskopie im kathodennahen Bereich eines Lichtbogens
Creators: name: Könemann, Fred
Publisher: name: Hannover : Universität
Year: 2001
Subjects: subject: Electric arc
subject: plasmadiagnostics
subject: cathode fall
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]