cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Emergence of Fresnel diffraction zones in gravitational lensing by a cosmic string
Creators: name: Fernández-Núñez, Isabel
name: Bulashenko, Oleg
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The possibility to detect cosmic strings -- topological defects of early Universe, by means of wave effects in gravitational lensing is discussed. To find the optimal observation conditions, we define the hyperbolic-shaped Fresnel observation zones associated with the diffraction maxima and analyse the frequency patterns of wave amplification corresponding to different alignments. In particular, we show that diffraction of gravitational waves by the string may lead to significant amplification at cosmological distances. The wave properties we found are quite different from what one would expect, for instance, from light scattered off a thin wire or slit, since a cosmic string, as a topological defect, gives no shadow at all.
description: 11 pages, 9 figures; discussion on observational consequences is extended, new references added; to appear in Phys. Lett. A
On Geometrization of Classical Fields (Model of Embedded Spaces)
Creators: name: Noskov, V. I.
Publisher: name: arXiv
Year: 2025
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences
subject: 53 (Primary) 53B, 53A45 (Secondary)

description: The possibility of geometrization of the gravitational and electro magnetic fields in 4D Finsler space (the Model of Embedded Spaces -- MES) is investigated. The model postulates a proper metric set of an element of distributed matter and asserts that space-time is a mutual physical embedding of such sets. The simplest MES geometry is constructed (its relativistic Finsler version) with a connection that depends of the properties of matter and its fields (torsion and nonmetricity are absent). The field hypothesis and the Least Action Principle of the matter-field system lead to Einstein-type and Maxwell-type equations, and their nonlinearity -- to the anisotropic field contribution to the seed mass of matter. It is shown that the seed matter plays the role of a physical vacuum of the Embedding determines the cosmological constant. In the special case of a conformal metric, the Maxwell-type equations reduce to the Maxwell equations themselves and a negative electromagnetic contribution. A possible experimental verification of this result is evaluated. The "redshift" effect in an electric field is also mentioned as a method for studying the vacuum and relic electric charge. A study of the gauge structure of the presented theory is postponed to the future.
description: 23 pages, E-mail: nskv@icmm.ru, vitivnos@gmail.com
A Brief History of the Rural Electric and Telephone Programs
Creators: name: Rural Electrification Administration
name: Rural Electrification Administration
Publisher: name: Unknown
Year: 1990
Subjects: Agricultural and Food Policy
Agricultural Finance
Community/Rural/Urban Development
Resource /Energy Economics and Policy

description: Excerpts from the report: The Rural Electrification Administration (REA) is a credit agency of the U.S. Department of Agriculture which assists rural electric and telephone organizations in obtaining the financing required to provide electric and telephone service in rural areas. These essential services help improve the quality of life for people who live, work, or do business throughout rural America. Financial assistance may include (a) loans from REA, (b) guarantees of loans made by others, and (c) REA approval of security arrangements which permit the borrower to obtain financing from other lenders without a guarantee. REA was first established by Executive Order 7037 on May 11, 1935, as part of a general program of unemployment relief. It soon became clear, however, that the task of extending central station electric service to rural areas required very specialized skills (engineering, management, etc.) that would be difficult to attract if REA operated under the constraints of the unemployment relief authorization. REA was given its own statutory authorization by the Rural Electrification Act of May 20, 1936. It became a part of the U.S. Department of Agriculture on July 1, 1939. Federal support was needed to electrify rural America because most of the established utilities served high density areas and did not extend lines to farmers and other rural residents because such investments were not considered to be feasible. The purpose of REA was expanded in 1949 when REA was authorized to loan funds for telephone service in rural areas. As in the case of electricity, it became clear that rural residents would not have access to adequate and dependable telephone service unless Federal support was provided. Both the rural Telephone and rural Electric programs of REA have been successful in achieving their goals.
description: Contents: A. History; B. Chronology of Legislative Changes; C. Program Accomplishments; D. Loan Statistics; E. Borrower Statistics; F. List of Charts and Tables
Probing Leptophilic Dark Sectors with Hadronic Processes
Creators: name: D'Eramo, Francesco
name: Kavanagh, Bradley J.
name: Panci, Paolo
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We study vector portal dark matter models where the mediator couples only to leptons. In spite of the lack of tree-level couplings to colored states, radiative effects generate interactions with quark fields that could give rise to a signal in current and future experiments. We identify such experimental signatures: scattering of nuclei in dark matter direct detection; resonant production of lepton-antilepton pairs at the Large Hadron Collider; and hadronic final states in dark matter indirect searches. Furthermore, radiative effects also generate an irreducible mass mixing between the vector mediator and the $Z$ boson, severely bounded by ElectroWeak Precision Tests. We use current experimental results to put bounds on this class of models, accounting for both radiatively induced and tree-level processes. Remarkably, the former often overwhelm the latter.
description: 11 pages, 4 figures, version published in Physics Letters B
Improve Knowledge Of Acoustic Factors Involved In Railway Noise Annoyance
Creators: name: Sineau, M
name: Mietlicki, F
name: Bernfeld, D
name: Cherfan, S
name: Motio-Betato, L
name: Hellot, M
name: Evrard, A-S
name: Regairaz, J-P
name: Rosin, C
Publisher: name: arXiv
Year: 2025
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: Energy noise indicators are generally used to characterize the exposure of populations to transportation noise in relation to their long-term annoyance, but they do not adequately reflect the repetitive nature of noise peaks generated by railway traffic. The GENIFER project aims to test a study protocol designed to rank railway noise events according to the instantaneous annoyance they cause to residents. This study will be carried out in a sector exposed to railway noise in the {Î}le-de-France region and will require the recruitment of 60 volunteer local residents. It will propose the use of innovative tools for collecting information, including an electronic remote-control allowing participants to rate the annoyance they feel when trains pass by, and noise sensor instrumentation allowing the simultaneous collection of the acoustic characteristics of railway noise peaks. It also includes semi-directive interviews and a questionnaire to identify co-determinants of annoyance. The instantaneous annoyance scores collected will also be compared with those obtained from commented listening to sound samples of passing trains. In addition to assessing the acceptability of the protocol by the participants, this study aims to validate the feasibility of ranking railway noise events according to their acoustic characteristics in terms of the annoyance expressed.
Relativistic effects in heavy-ion Coulomb scattering
Creators: name: Kumar, Ravinder
name: Bertulani, C. A.
name: Robinson, G.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The role of relativistic corrections in Coulomb scattering of heavy ions at intermediate energy collisions ($E_{lab}\gtrsim 50$ MeV/n) is investigated by numerically solving a full set of coupled equations. We compare two methods, (a) one involving an exact account of interaction retardation with (b) a method based on the expansion of effective Lagrangians in powers of the ion velocities, $v/c$.Our study makes it possible to infer the relevance of kinematic corrections, retardation, and magnetic interactions such as the Darwin force. We show that analytical formulas are able to describe all aspects of experimental interest in relativistic effects in heavy-ion Coulomb scattering at intermediate energies without having to solve numerically the coupled equations.
description: 8 pages, 6 figures , Accepted for publication in the Physical. Rev. C
UmUTracker: A versatile MATLAB program for automated particle tracking of 2D light microscopy or 3D digital holography data
Creators: name: Zhang, Hanqing
name: Stangner, Tim
name: Wiklund, Krister
name: Rodriguez, Alvaro
name: Andersson, Magnus
Publisher: name: arXiv
Year: 2017
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: We present a versatile and fast MATLAB program (UmUTracker) that automatically detects and tracks particles by analyzing video sequences acquired by either light microscopy or digital in-line holographic microscopy. Our program detects the 2D lateral positions of particles with an algorithm based on the isosceles triangle transform, and reconstructs their 3D axial positions by a fast implementation of the Rayleigh-Sommerfeld model using a radial intensity profile. To validate the accuracy and performance of our program, we first track the 2D position of polystyrene particles using bright field and digital holographic microscopy. Second, we determine the 3D particle position by analyzing synthetic and experimentally acquired holograms. Finally, to highlight the full program features, we profile the microfluidic flow in a 100 micrometer high flow chamber. This result agrees with computational fluid dynamic simulations. On a regular desktop computer UmUTracker can detect, analyze, and track multiple particles at 5 frames per second for a template size of 201 x 201 in a 1024 x 1024 image. To enhance usability and to make it easy to implement new functions we used object-oriented programming. UmUTracker is suitable for studies related to: particle dynamics, cell localization, colloids and microfluidic flow measurement.
description: Manuscript including supplementary materials
Detection prospects for high energy neutrino sources from the anisotropic matter distribution in the local universe
Creators: name: Mertsch, Philipp
name: Rameez, Mohamed
name: Tamborra, Irene
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Constraints on the number and luminosity of the sources of the cosmic neutrinos detected by IceCube have been set by targeted searches for point sources. We set complementary constraints by using the 2MASS Redshift Survey (2MRS) catalogue, which maps the matter distribution of the local Universe. Assuming that the distribution of the neutrino sources follows that of matter we look for correlations between `warm' spots on the IceCube skymap and the 2MRS matter distribution. Through Monte Carlo simulations of the expected number of neutrino multiplets and careful modelling of the detector performance (including that of IceCube-Gen2) we demonstrate that sources with local density exceeding $10^{-6} \, \text{Mpc}^{-3}$ and neutrino luminosity $L_ν \lesssim 10^{42} \, \text{erg} \, \text{s}^{-1}$ ($10^{41} \, \text{erg} \, \text{s}^{-1}$) will be efficiently revealed by our method using IceCube (IceCube-Gen2). At low luminosities such as will be probed by IceCube-Gen2, the sensitivity of this analysis is superior to requiring statistically significant direct observation of a point source.
description: 24 pages, 7 figures; matches published version
title: Intraarticular nodular fasciitis of the knee
Creators: name: Casado Pérez, Cristina
Publisher: name: EURORAD
Year: 2023
Subjects: subject: Musculoskeletal system
subject: Extremities
subject: Musculoskeletal soft tissue
subject: MR
subject: Clinical Cases

description: Clinical History: A 47-year-old man presented in the orthopaedics department with right Knee pain of 4 months duration preferably in the posterior aspect of the joint. There was no history of trauma.

At the physical examination, the meniscus manoeuvres and pivot shift test were negative, and there were no palpable masses.

description: 47 years, male
The ALAMO approach to machine learning
Creators: name: Wilson, Zachary T.
name: Sahinidis, Nikolaos V.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: ALAMO is a computational methodology for leaning algebraic functions from data. Given a data set, the approach begins by building a low-complexity, linear model composed of explicit non-linear transformations of the independent variables. Linear combinations of these non-linear transformations allow a linear model to better approximate complex behavior observed in real processes. The model is refined, as additional data are obtained in an adaptive fashion through error maximization sampling using derivative-free optimization. Models built using ALAMO can enforce constraints on the response variables to incorporate first-principles knowledge. The ability of ALAMO to generate simple and accurate models for a number of reaction problems is demonstrated. The error maximization sampling is compared with Latin hypercube designs to demonstrate its sampling efficiency. ALAMO's constrained regression methodology is used to further refine concentration models, resulting in models that perform better on validation data and satisfy upper and lower bounds placed on model outputs.
A Model of Risk and Mental State Shifts during Social Interaction
Creators: name: Hula, Andreas
name: Vilares, Iris
name: Dayan, Peter
name: Montague, P. Read
Publisher: name: arXiv
Year: 2017
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Biological sciences

description: Cooperation and competition between human players in repeated microeconomic games offer a powerful window onto social phenomena such as the establishment, breakdown and repair of trust. This offers the prospect of particular insight into populations of subjects suffering from socially-debilitating conditions such as borderline personality disorder. However, although a suitable foundation for the quantitative analysis of such games exists, namely the Interactive Partially Observable Markov Decision Process (I-POMDP), computational considerations have hitherto limited its application. Here, we improve inference in I-POMDPs in a canonical trust game, and thereby highlight and address two previously unmodelled phenomena: a form of social risk-aversion exhibited by the player who is in control of the interaction in the game, and irritation or anger exhibited by both players. Irritation arises when partners apparently defect, and it causes a precipitate breakdown in cooperation. Failing to model one's partner's propensity for it leads to substantial economic inefficiency. We illustrate these behaviours using evidence drawn from the play of large cohorts of healthy volunteers and patients.
Preparing local strain patterns in graphene by atomic force microscope based indentation
Creators: name: Nemes-Incze, Péter
name: Kukucska, Gergő
name: Koltai, János
name: Kürti, Jenő
name: Hwang, Chanyong
name: Tapasztó, Levente
name: Biró, László P.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Patterning graphene into various mesoscopic devices such as nanoribbons, quantum dots, etc. by lithographic techniques has enabled the guiding and manipulation of graphene's Dirac-type charge carriers. Graphene, with well-defined strain patterns, holds promise of similarly rich physics while avoiding the problems created by the hard to control edge configuration of lithographically prepared devices. To engineer the properties of graphene via mechanical deformation, versatile new techniques are needed to pattern strain profiles in a controlled manner. Here we present a process by which strain can be created in substrate supported graphene layers. Our atomic force microscope-based technique opens up new possibilities in tailoring the properties of graphene using mechanical strain.
Complex Langevin dynamics and zeroes of the fermion determinant
Creators: name: Aarts, Gert
name: Seiler, Erhard
name: Sexty, Denes
name: Stamatescu, Ion-Olimpiu
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: QCD at nonzero baryon chemical potential suffers from the sign problem, due to the complex quark determinant. Complex Langevin dynamics can provide a solution, provided certain conditions are met. One of these conditions, holomorphicity of the Langevin drift, is absent in QCD since zeroes of the determinant result in a meromorphic drift. We first derive how poles in the drift affect the formal justification of the approach and then explore the various possibilities in simple models. The lessons from these are subsequently applied to both heavy dense QCD and full QCD, and we find that the results obtained show a consistent picture. We conclude that with careful monitoring, the method can be justified a posteriori, even in the presence of meromorphicity.
description: 67 pages, many figures; minor changes, discussion section added, to appear in JHEP
Domain decomposition and multilevel integration for fermions
Creators: name: Cè, Marco
name: Giusti, Leonardo
name: Schaefer, Stefan
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: The numerical computation of many hadronic correlation functions is exceedingly difficult due to the exponentially decreasing signal-to-noise ratio with the distance between source and sink. Multilevel integration methods, using independent updates of separate regions in space-time, are known to be able to solve such problems but have so far been available only for pure gauge theory. We present first steps into the direction of making such integration schemes amenable to theories with fermions, by factorizing a given observable via an approximated domain decomposition of the quark propagator. This allows for multilevel integration of the (large) factorized contribution to the observable, while its (small) correction can be computed in the standard way.
description: 14 pages, 6 figures, v2: published version, talk presented at the 34th annual International Symposium on Lattice Field Theory, 24-30 July 2016, University of Southampton, UK
Constraints on running vacuum model with $H(z)$ and $f σ_8$
Creators: name: Geng, Chao-Qiang
name: Lee, Chung-Chi
name: Yin, Lu
Publisher: name: arXiv
Year: 2017
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We examine the running vacuum model with $Λ(H) = 3 νH^2 + Λ_0$, where $ν$ is the model parameter and $Λ_0$ is the cosmological constant. From the data of the cosmic microwave background radiation, weak lensing and baryon acoustic oscillation along with the time dependent Hubble parameter $H(z)$ and weighted linear growth $f (z)σ_8(z)$ measurements, we find that $ν=(1.37^{+0.72}_{-0.95})\times 10^{-4}$ with the best fitted $χ^2$ value slightly smaller than that in the $Λ$CDM model.
description: 15 pages, 1 figure, revised version accepted by JCAP
Simply split SIMPs
Creators: name: Bernal, Nicolás
name: Chu, Xiaoyong
name: Pradler, Josef
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Dark Matter which interacts strongly with itself, but only feebly with the Standard Model is a possibility that has been entertained to solve apparent small-scale structure problems that are pertinent to the non-interacting cold Dark Matter paradigm. In this paper, we study the simple case in which the self-scattering rate today is regulated by kinematics and/or the abundance ratio, through the mass-splitting of nearly degenerate pseudo-Dirac fermions $χ_1$ and $χ_2$ or real scalars $ϕ_1$ and $ϕ_2$. We calculate the relic density of these states in a scenario where self-scattering proceeds through off-diagonal couplings with a vector particle $V$ (Dark Photon) and where the abundance is set through number-depleting 4-to-2 reactions in the hidden sector, or, alternatively, via freeze-in. We study the implications of the considered models and their prospect of solving astrophysical small-scale structure problems. We also show how the introduction of the (meta-)stable heavier state may be probed in future dark matter searches.
description: Minor changes, references added, to match the published version
U.S. Agricultural Policy Review, 2021
Creators: name: Baldwin, Katherine
name: Williams, Brian
name: Tsiboe, Francis
name: Effland, Anne
name: Turner, Dylan
name: Pratt, Bryan
name: Jones, Jordan
name: Toossi, Saied
name: Hodges, Leslie
name: Baldwin, Katherine
name: Williams, Brian
name: Tsiboe, Francis
name: Effland, Anne
name: Turner, Dylan
name: Pratt, Bryan
name: Jones, Jordan
name: Toossi, Saied
name: Hodges, Leslie
Publisher: name: Unknown
Year: 2023
Subjects: subject: Agricultural and Food Policy
subject: Agricultural Finance
subject: Environmental Economics and Policy
subject: Industrial Organization
subject: Institutional and Behavioral Economics
subject: Public Economics
subject: Risk and Uncertainty
subject: farm policy
subject: ad hoc assistance
subject: COVID-19
subject: disaster assistance
subject: commodity programs
subject: conservation
subject: crop insurance
subject: climate
subject: equity
subject: supply chains
subject: food and nutrition assistance

description: This report is the inaugural edition in a series examining annual developments in U.S. agricultural policies, focusing on policies related to production agriculture, agrofood value chains, and food and nutrition assistance. U.S. agricultural policies are designed to address multiple objectives—including providing an income safety net for agricultural producers, minimizing negative environmental impacts of agricultural production, ensuring agricultural supply chains are equipped to provide adequate quantities of safe food to consumers, and helping address food and nutrition insecurity among vulnerable populations. Different policy tools are used to meet these objectives—including cost share, direct payments, provision of credit, or access to services. Policy developments in 2021 continued to respond to the ongoing impacts of the Coronavirus (COVID-19) pandemic and extreme weather. Other policy developments in 2021 were aimed at updating certain risk management tools, addressing the impacts of climate change, and supporting improved equity in access to farm programs and outreach to under-served communities.
Designing micro-movement into automotive seating
Creators: name: Varela, Maria
Publisher: name: Loughborough University
Year: 2023
Subjects: classificationCode: 330399
subject: Design not elsewhere classified

description: A good driving experience depends on driver comfort and automotive seating is an important facilitator of this. In this context, the aim of this research is to develop a seat design concept using micro-movement while driving to promote driver comfort and wellbeing. Ultimately, the seat concept has a broader impact: in any environment in which static sitting is found, micro-movements can promote healthier sitting and lifestyle: both small and large posture changes can bring benefits to the sitting experience. The experimental work involved the development of two movement protocols: fore–aft movement (increments of 7 mm) and cushion backrest tilt movement (increments of 0.3° and 1° respectively). A series of small studies evidenced that the protocols worked well and that the user experience varied. [Continues.]
Screw and Lie Group Theory in Multibody Dynamics -- Recursive Algorithms and Equations of Motion of Tree-Topology Systems
Creators: name: Mueller, Andreas
Publisher: name: arXiv
Year: 2023
Subjects: subject: Numerical Analysis (math.NA)
subject: Robotics (cs.RO)
subject: Differential Geometry (math.DG)
subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: Screw and Lie group theory allows for user-friendly modeling of multibody systems (MBS) while at the same they give rise to computationally efficient recursive algorithms. The inherent frame invariance of such formulations allows for use of arbitrary reference frames within the kinematics modeling (rather than obeying modeling conventions such as the Denavit-Hartenberg convention) and to avoid introduction of joint frames. The computational efficiency is owed to a representation of twists, accelerations, and wrenches that minimizes the computational effort. This can be directly carried over to dynamics formulations. In this paper recursive $O\left( n\right) $ Newton-Euler algorithms are derived for the four most frequently used representations of twists, and their specific features are discussed. These formulations are related to the corresponding algorithms that were presented in the literature. The MBS motion equations are derived in closed form using the Lie group formulation. One are the so-called 'Euler-Jourdain' or 'projection' equations, of which Kane's equations are a special case, and the other are the Lagrange equations. The recursive kinematics formulations are readily extended to higher orders in order to compute derivatives of the motions equations. To this end, recursive formulations for the acceleration and jerk are derived. It is briefly discussed how this can be employed for derivation of the linearized motion equations and their time derivatives. The geometric modeling allows for direct application of Lie group integration methods, which is briefly discussed.
Amtliche Mitteilungen der Technischen Universität Dortmund Nr. 2/2024
Creators: name: (:Unkn) Unknown
Publisher: name: Technische Universität Dortmund
Year: 2024
Subjects: subject: 080

description: Ordnung für die Feststellung der besonderen studiengangbezogenen Eignung in dem Bachelorstudiengang Musikjournalismus und Musikvermittlung mit dem Abschluss Bachelor of Arts (B. A.) der Fakultäten Kulturwissenschaften sowie Kunst- und Sportwissenschaften an der Technischen Universität Dortmund vom 15. Januar 2024
description: Fächerspezifische Bestimmungen für den Lernbereich Natur- und Gesellschaftswissenschaften (Sachunterricht) an der Technischen Universität Dortmund vom 17. Januar 2024 für ein Lehramt an Grundschulen zur Prüfungsordnung für die Lehramtsbachelorstudiengänge
description: Fächerspezifische Bestimmungen für den Lernbereich Natur- und Gesellschaftswissenschaften (Sachunterricht) an der Technischen Universität Dortmund vom 17. Januar 2024 für ein Lehramt an Grundschulen zur Prüfungsordnung für die Lehramtsmasterstudiengänge
description: Fächerspezifische Bestimmungen für den Lernbereich Natur- und Gesellschaftswissenschaften (Sachunterricht) an der Technischen Universität Dortmund vom 17. Januar 2024 für ein Lehramt für sonderpädagogische Förderung zur Prüfungsordnung für die Lehramtsbachelorstudiengänge
description: Fächerspezifische Bestimmungen für den Lernbereich Natur- und Gesellschaftswissenschaften (Sachunterricht) an der Technischen Universität Dortmund vom 17. Januar 2024 für ein Lehramt für sonderpädagogische Förderung zur Prüfungsordnung für die Lehramtsmasterstudiengänge
description: Fakultätsordnung der Fakultät Bio- und Chemieingenieurwesen der Technischen Universität Dortmund vom 23. Januar 2024
description: Fakultätsordnung der Fakultät Kulturwissenschaften der Seite Technischen Universität Dortmund vom 23. Januar 2024
description: Geschäftsordnung des Fakultätsrats der Fakultät Kulturwissenschaften der Technischen Universität Dortmund vom 23. Januar 2024
description: Amtliche Mitteilungen der Technischen Universität Dortmund;2024; 2
Two-body relaxation of spin-polarized fermions in reduced dimensionalities near a p-wave Feshbach resonance
Creators: name: Kurlov, D. V.
name: Shlyapnikov, G. V.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We study inelastic two-body relaxation in a spin-polarized ultracold Fermi gas in the presence of a p-wave Feshbach resonance. It is shown that in reduced dimensionalities, especially in the quasi-one-dimensional case, the enhancement of the inelastic rate constant on approach to the resonance is strongly suppressed compared to three dimensions. This may open promising paths for obtaining novel many-body states.
description: 14 pages, 12 figures
Entropy Product Function and Central charges in NUT Geometry
Creators: name: Pradhan, Parthapratim
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We define an \emph{entropy product function}~(EPF) for Taub-Newman-Unti-Tamburino~(TNUT) black hole~(BH) following the prescription suggested by Wu et al.~\cite{wu} ~[PRD 100, 101501(R) (2019)]. The prescription argues that a generic four-dimensional TNUT spacetime might be expressed in terms of three or four different types of thermodynamic hairs. They can be defined as the Komar mass~($M=m$), the angular momentum~($J_{n}=mn$), the gravitomagnetic charge ($N=n$), the dual~(magnetic) mass $(\tilde{M}=n)$. Taking this prescription and using the \emph{EPF}, we derive the \emph{central charges} of dual CFT~(conformal field theory) via Cardy's formula. Remarkably, we \emph{find} that for TNUT BH there exists a relation between the \emph{central charges and EPF} as $c=6\left(\frac{\partial {\cal F}}{\partial {\cal N}_{i}}\right)$, where ${\cal F}$ is EPF and ${\cal N}_{i}$ is one of the integer-valued charges i.e. the NUT charges~($N$) or any new conserved charges~($J_{N}$). We reverify these results by calculating the exact values of different thermodynamic parameters. We define the EPF~${\cal F}$ from the first law of thermodynamics of both horizons. Moreover, we write the first laws of both the horizons for left-moving and right-moving sectors. Introducing the Bézout's identity, we show that for TNUT BH one can generate more holographic descriptions described by a pair of integers $(a,b)$. More holographic pictures have a great significance in understanding the holographic nature of quantum gravity. Furthermore, using the \emph{EPF} we derive the central charges for Reissner-Nordström-NUT~(RNNUT) BH, Kerr-Taub-NUT~(KNUT) BH and Kerr-Newman-NUT~(KNNUT) BH. Finally, we prove that they are equal in both sectors provided that the EPF is mass-independent~(or universal).
description: Accepted in International Journal of Modern Physics A
title: Skene's gland leiomyoma - a rare gynaecological tumour
Creators: name: Morgado, Margarida
Publisher: name: EURORAD
Year: 2023
Subjects: subject: Genital (female) imaging
subject: Anatomy
subject: Genital / Reproductive system female
subject: MR
subject: Clinical Cases

description: Clinical History: A 38-year-old patient presented with a painless paraurethral lump that had grown over the course of 2 years and become unesthetic unappealing. Pelvic examination revealed a soft, mobile right paraurethral mass measuring approximately 2 cm, with no signs of inflammation. Magnetic resonance imaging (MRI) was ordered for further evaluation.

description: 38 years, female
Scotland’s net zero sectors – An investment readiness methodology and assessment
Creators: name: Hollister, Sam
name: Charlton, Isaac
name: Watts, Mark
name: Taylor, William
name: Angela, Irene
Publisher: name: LCP
Year: 2024
Subjects: Investment readiness
Just transition
Offshore wind
Onshore wind
Hydrogen
Private sector investment

description: This report provides a methodology to assess the investment readiness of Net Zero sectors in Scotland. The methodology is applied to three test sectors: offshore wind; onshore wind, and hydrogen.
Coherence number as a discrete quantum resource
Creators: name: Chin, Seungbeom
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: Information Theory (cs.IT)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We introduce a new discrete coherence monotone named the \emph{coherence number}, which is a generalization of the coherence rank to mixed states. After defining the coherence number in a similar manner to the Schmidt number in entanglement theory, we present a necessary and sufficient condition of the coherence number for a coherent state to be converted to an entangled state of nonzero $k$-concurrence (a member of the generalized concurrence family with $2\le k \le d$). It also turns out that the coherence number is a useful measure to understand the process of Grover search algorithm of $N$ items. We show that the coherence number remains $N$ and falls abruptly when the success probability of the searching process becomes maximal. This phenomenon motivates us to analyze the depletion pattern of $C_c^{(N)}$ (the last member of the generalized coherence concurrence, nonzero when the coherence number is $N$), which turns out to be an optimal resource for the process since it is completely consumed to finish the searching task.
description: 10 pages, Revtex 4.1; (v3) new analysis on the aspect of coherence number as a resource for the Grover algorithm, former title "Conversion of Coherence into Entanglement $ k $-concurrence" ; (v4) minor corrections and clarifications, 1 figure added
Indirect Induction Sintering of Metal Parts Produced through Material Extrusion Additive Manufacturing
Creators: name: Ortega Varela De Seijas, Manuel
name: Bardenhagen, Andreas
name: Rohr, Thomas
name: Stoll, Enrico
Publisher: name: Technische Universität Berlin
Year: 2023
Subjects: subject: 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
subject: material extrusion
subject: additive manufacturing
subject: sintering
subject: induction
subject: stainless steel 316L

description: Avoiding loose powders and resins, material extrusion additive manufacturing is a powerful technique to produce near-net shape parts, being a cheap and safe alternative for developing complex industrial-grade products. Filaments embedded with a high packing density of metallic or ceramic granules are being increasingly used, resulting in almost fully dense parts, whereby geometries are shaped, debinded and sintered sequentially until the completion of the part. Traditionally, “brown” debinded geometries are transported to conventional furnaces to densify the powder compacts, requiring careful tailoring of the heating profiles and sintering environment. This approach is decoupled and often involves time-consuming post-processing, whereby after the completion of the shaping and debinding steps, the parts need to be transported to a sintering furnace. Here, it is shown that sintering via indirect induction heating of a highly filled commercially available filament embedded with stainless steel 316L powder can be an effective route to densify Fused Filament Fabricated (FFF) parts. The results show that densities of 99.8% can be reached with very short soaking times, representing a significant improvement compared to prior methods. A hybrid machine is proposed, whereby a custom-built machine is integrated with an induction heater to combine FFF with local indirect induction sintering. Sintering in situ, without the need for part transportation, simplifies the processing of metal parts produced through material extrusion additive manufacturing.
CycloSiFA: the next generation of silicon-based fluoride acceptors for positron emission tomography (PET)
Creators: name: Mawick, Matthias
name: Jaworski, Carolin
name: Bittermann, Jens
name: Iovkova, Ljuba
name: Pu, Yinglan
name: Wängler, Carmen
name: Wängler, Björn
name: Jurkschat, Klaus
name: Krause, Norbert
name: Schirrmacher, Ralf
Publisher: name: TU Dortmund
Year: 2023
Subjects: subject: Azasilole
subject: Fluorine
subject: Positron emission tomography
subject: Ring opening
subject: Silicon
subject: 540

description: The ring-opening Si-fluorination of a variety of azasilole derivatives cyclo-1-(iPr2Si)−4-X−C6H3−2-CH2NR (4: R=2,6-iPr2C6H3, X=H; 4 a: R=2,4,6-Me3C6H2, X=H; 9: R=2,6-iPr2C6H3, X=tBuMe2SiO; 10: R=2,6-iPr2C6H3, X=OH; 13: R=2,6-iPr2C6H3, X=HCCCH2O; 22: R=2,6-iPr2C6H3, X=tBuMe2SiCH2O) with different 19F-fluoride sources was studied, optimized and the experience gained was used in a translational approach to create a straightforward 18F-labelling protocol for the azasilole derivatives [18F]6 and [18F]14. The latter constitutes a potential clickable CycloSiFA prosthetic group which might be used in PET tracer development using Cu-catalysed triazole formation. Based on our findings, CycloSiFA has the potential to become a new entry into non-canonical labelling methodologies for radioactive PET tracer development.
description: Angewandte Chemie / International edition;62(50)
On the transverse M5-branes in matrix theory
Creators: name: Asano, Yuhma
name: Ishiki, Goro
name: Shimasaki, Shinji
name: Terashima, Seiji
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: It has been a long-standing problem how the transverse M5-branes are described in the matrix-model formulations of M-theory. We consider this problem for M-theory on the maximally supersymmetric pp-wave geometry, which admits transverse spherical M5-branes with zero light-cone energy. By using the localization, we directly analyze the strong coupling region of the corresponding matrix theory called the plane wave matrix model (PWMM). Under the assumption that the low energy modes of the scalar fields in PWMM become mutually commuting in the strong coupling region, we show that the eigenvalue density of the $SO(6)$ scalars in the low energy region exactly agrees with the shape of the spherical M5-branes in the decoupling limit. This result gives a strong evidence that the transverse M5-branes are indeed contained in the matrix theory and the theory realizes a second quantization of the M-theory.
description: 4 pages, v2: A major revision was made in the interpretation but the conclusion is essentially unchanged
Laser debinding of parts produced through material extrusion additive manufacturing
Creators: name: Ortega Varela De Seijas, Manuel
name: Bardenhagen, Andreas
name: Pambaguian, Laurent
name: Stoll, Enrico
Publisher: name: Technische Universität Berlin
Year: 2023
Subjects: subject: 600 Technik, Medizin, angewandte Wissenschaften::670 Industrielle Fertigung::671 Metallverarbeitung und Rohprodukte aus Metall
subject: material extrusion additive manufacturing
subject: debinding
subject: laser
subject: 316L stainless steel

description: A novel cost effective material extrusion additive manufacturing method for metals and ceramics employs filaments embedded with powdered granules which are shaped, debinded, and sintered sequentially until completion of the part. One well known drawback of the technology lies in the time-consuming debinding process, which often requires handling toxic agents (e.g. acetone, cyclohexane, nitric or oxalic acids), as well as complex heating profiles. Debinding is traditionally done after shaping the part, and little investigation has been made to develop the technology to debind locally, in situ, without the use of toxic consumables. Here, we show that full debinding can be achieved efficiently on the bulk of the printed part through an application of local energy by applying it selectively on the top surface, layer by layer, along the 3D volume of as built green parts. A low intensity infra-red laser is integrated in a custom-built machine to create a hybrid device that combines traditional filament extrusion additive manufacturing with in-situ debinding. The results show that the main binder matrix of a Highly Filled (HF) commercially available stainless steel 316L filament can be removed efficiently along the full volume of the part via laser ablation of the organic mass. Defects, surface roughness and topography deviations can be minimized compared to other traditional thermal debinding methods, further showcasing the capability of building consecutive layers on top of a previously debinded layer. We report improvements in debinding time by a magnitude of 248 % compared to traditional thermal debinding, of 595 % compared to solvent debinding at 45 °C, and 943 % compared to solvent debinding at room temperature. The effect of debinding with the use of lasers in-situ, layer by layer, and the effect in the layer adhesion of fully debinded parts, is investigated through optical and electron microscopy, as well as quantifying the binder mass loss. Debinding in-situ offers new routes to reduce processing times of parts produced through FFF.
Knowledge in attention assistant for improving generalization in deep teacher–student models
Creators: name: Morabbi, Sajedeh
name: Soltanizadeh, Hadi
name: Mozaffari, Saeed
name: Fadaeieslam, Mohammad Javad
name: Sana, Shib Sankar
Publisher: name: Taylor & Francis
Year: 2024
Subjects: Biological Sciences not elsewhere classified
Information Systems not elsewhere classified
Science Policy

description: Research on knowledge distillation has become active in deep neural networks. Knowledge distillation involves training a low-capacity model from a high-capacity model. However, when the capacities of the teacher and student models differ, it can result to poor learning and low generalization performance. We propose here a novel teacher assistant model called Knowledge in Attention Assistant. This model learns learning a discriminative representation of important regions and statistical information along with spatial and channel knowledge. Moreover, by using a triplet attention mechanism, the student model can learn both the inner and outer distribution of different categories, and also memorize the knowledge distribution of the teacher model. This alignment improves the effectiveness and generalization of knowledge distillation and reduces the capacity gap between the teacher and student models. The present model addresses feature inconsistency by adjusting the attention weight distribution based on the resemblance between the features of the teacher and student. The evaluation of the proposed teacher assistant method shows remarkable results. The student model outperforms the teacher model in terms of generalization performance, achieving improvements of 93.37% and 94.09% on CIFAR-10 and CIFAR-100 datasets, respectively. Furthermore, the proposed model enhances the F1-scores 91.98% on CIFAR-10 and 79.69% on CIFAR-100.
A hybrid material extrusion device with local debinding and sintering
Creators: name: Ortega Varela De Seijas, Manuel
name: Bardenhagen, Andreas
name: Rohr, Thomas
name: Stoll, Enrico
Publisher: name: Technische Universität Berlin
Year: 2023
Subjects: subject: 600 Technik, Medizin, angewandte Wissenschaften::620 Ingenieurwissenschaften::620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
subject: material extrusion
subject: debinding
subject: lasers
subject: sintering
subject: induction

description: To date, debinding and sintering of parts fabricated through material extrusion (MEX) has been done in a time-consuming disconnected approach, with geometries initially shaped, then debinded and lastly sintered. Little progress has been made to process MEX bodies within the same device, eliminating part transportation to sophisticate and expensive equipment. This study shows that debinding and sintering in-situ, within the same volume, can be achieved efficiently by selectively applying local energy on the as-built green parts. A hybrid device is disclosed, combining traditional MEX with local debinding and sintering. The hybrid machine is integrated with a low intensity infrared diode laser and an induction heater, whereby the combination of concentrated energies during the manufacturing process can lead to near-net shaped geometries. The results establish that the main binder matrix of a Highly Filled (HF) stainless steel 316 L filament can be removed effectively across the entire 3D volume during the shaping stage. It is further reported that local sintering of debinded geometries results in high densities with short soaking times, being a promising improvement compared to conventional methods. Local thermal debinding and sintering allows to simplify the processing of MEX parts, avoiding the use of toxic agents and expensive post-processing equipment.
Joint short- and long-baseline constraints on light sterile neutrinos
Creators: name: Capozzi, Francesco
name: Giunti, Carlo
name: Laveder, Marco
name: Palazzo, Antonio
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Recent studies have evidenced that long-baseline (LBL) experiments are sensitive to the extra CP-phases involved with light sterile neutrinos, whose existence is suggested by several anomalous short-baseline (SBL) results. We show that, within the 3+1 scheme, the combination of the existing SBL data with the LBL results coming from the two currently running experiments NO$ν$A and T2K, enables us to simultaneously constrain two active-sterile mixing angles $θ_{14}$ and $θ_{24}$ and two CP-phases $δ_{13} \equiv δ$ and $δ_{14}$, albeit the information on the second CP-phase is still weak at the moment. The two mixing angles are basically determined by the SBL data, while the two CP-phases are constrained by the LBL experiments, once the information coming from the SBL setups is taken into account. We also assess the robustness/fragility of the estimates of the standard 3-flavor parameters in the more general 3+1 scheme. To this regard we find that: i) the indication of CP-violation found in the 3-flavor analyses persists also in the 3+1 scheme, with $δ_{13} \equiv δ$ having still its best fit value around $-π/2$; ii) the 3-flavor weak hint in favor of the normal hierarchy becomes even less significant when sterile neutrinos come into play; iii) the weak indication of non-maximal $θ_{23}$ (driven by NO$ν$A disappearance data) persists in the 3+1 scheme, where maximal mixing is disfavored at almost the 90\% C.L. in both normal and inverted mass hierarchy; iv) the preference in favor of one of the two octants of $θ_{23}$ found in the 3-flavor framework (higher octant for inverted mass hierarchy) is completely washed out in the 3+1 scheme.
description: Discussion expanded; one figure added; version published in Physical Review D
title: Atypical intraosseous meningioma of the calvarium
Creators: name: Chirayath, Michael
Publisher: name: EURORAD
Year: 2023
Subjects: subject: Head & neck imaging
subject: CNS
subject: Head and neck
subject: Neuroradiology brain
subject: MR
subject: Neoplasia
subject: Clinical Cases

description: Clinical History: 43-year-old female presented with headache with progressive swelling in the scalp preceded by the history of trauma.

description: 43 years, female