cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Hand hygiene monitoring based on segmentation of interacting hands with convolutional networks
Creators: name: Dietz, Armin
name: Pösch, Andreas
name: Reithmeier, Eduard
Publisher: name: Bellingham, Wash. : SPIE
Year: 2018
Subjects: subject: Gesture recognition
subject: Hand hygiene
subject: Hand tracking
subject: Machine learning
subject: Segmentation
subject: Artificial intelligence
subject: Convolution
subject: Deep neural networks
subject: Disinfection
subject: Health care
subject: Image segmentation
subject: Learning systems
subject: Medical imaging
subject: Video streaming
subject: Convolutional networks
subject: Frames per seconds
subject: Hand disinfections
subject: Hand hygienes
subject: Pixelwise classification
subject: Region of interest
subject: World Health Organization
subject: Palmprint recognition
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik

description: The number of health-care associated infections is increasing worldwide. Hand hygiene has been identified as one of the most crucial measures to prevent bacteria from spreading. However, compliance with recommended procedures for hand hygiene is generally poor, even in modern, industrialized regions. We present an optical assistance system for monitoring the hygienic hand disinfection procedure which is based on machine learning. Firstly, each hand and underarm of a person is detected in a down-sampled 96 px x 96 px depth video stream by pixelwise classification using a fully convolutional network. To gather the required amount of training data, we present a novel approach in automatically labeling recorded data using colored gloves and a color video stream that is registered to the depth stream. The colored gloves are used to segment the depth data in the training phase. During inference, the colored gloves are not required. The system detects and separates detailed hand parts of interacting, self-occluded hands within the observation zone of the sensor. Based on the location of the segmented hands, a full resolution region of interest (ROI) is cropped. A second deep neural network classifies the ROI into ten separate process steps (gestures), with nine of them based on the recommended hand disinfection procedure of the World Health Organization, and an additional error class. The combined system is cross-validated with 21 subjects and predicts with an accuracy of 93.37% (± 2.67%) which gesture is currently executed. The feedback is provided with 30 frames per second.
Data for "GAN-Aimbots: The Next Generation of Cheating in Multiplayer Video Games"
Creators: name: Kanervisto, Anssi
name: Hautamäki, Ville
name: Kinnunen, Tomi
Publisher: name: Zenodo
Year: 2022
Subjects: python
data
vizdoom

description: The code and data used for the paper "GAN-Aimbots: The Next Generation of Cheating in Multiplayer Video Games". This code and data is frozen to the exact version used in the paper results. See README files for further info. Note that code and data are compressed. You need to extract "data.zip" correctly to use it with the code. Root code files (e.g. "classification.py", "plot.py") and the "data" directory should be in the same directory, and "data" directory should contain directories such as "data_collection_1" and "data_collection_2.
VP1-06 Investigating the inclusion of anatomical variations in computer-assisted exploration of the induced electric field in transcranial magnetic stimulation
Creators: Xiaojing Zhong
David C. Jiles
Hanjun Jiang
Publisher: name: IEEE
Year: 2025

Transcranial magnetic stimulation (TMS) is a promising tool in the diagnosis and treatment of neurological disorders non-invasively. Derived from the electromagnetic induction principle, it generates electric fields in the targeted areas in the brain by the alternating magnetic fields from the TMS coil. The brain structure is complicated and varies from person to person, which renders it difficult to predict and enhance the efficacy of TMS treatment for a specific subject. This work takes advantage of computational modeling and involves 50 realistic heterogeneous head models to explore how anatomical variations affect the induced electric field, from the perspective of intensity and focality. Six commercially available TMS coils were placed at two anatomical positions: the vertex and the dorsolateral prefrontal cortex. Finite element method was used to calculate the induced electric field in the brain. Two metrics, E-max and V-half were used to evaluate the induced electric field intensity and focality. The results were examined taking the fifty head models as a group or dividing them by their age or/and gender. It shows that age and gender have significant influence on the induced electric field. The effects of individual anatomical structure on induced electric field are also illustrated. This work will provide reference and support in explaining and determining TMS device configuration and treatment protocols for real-world clinical applications.
Transcranial magnetic stimulation (TMS) is a promising tool in the diagnosis and treatment of neurological disorders non-invasively. Derived from the electromagnetic induction principle, it generates electric fields in the targeted areas in the brain by the alternating magnetic fields from the TMS coil. The brain structure is complicated and varies from person to person, which renders it difficult to predict and enhance the efficacy of TMS treatment for a specific subject. This work takes advantage of computational modeling and involves 50 realistic heterogeneous head models to explore how anatomical variations affect the induced electric field, from the perspective of intensity and focality. Six commercially available TMS coils were placed at two anatomical positions: the vertex and the dorsolateral prefrontal cortex. Finite element method was used to calculate the induced electric field in the brain. Two metrics, E-max and V-half were used to evaluate the induced electric field intensity and focality. The results were examined taking the fifty head models as a group or dividing them by their age or/and gender. It shows that age and gender have significant influence on the induced electric field. The effects of individual anatomical structure on induced electric field are also illustrated. This work will provide reference and support in explaining and determining TMS device configuration and treatment protocols for real-world clinical applications.
Impact of different polyimide-based substrates on the soft magnetic properties of NiFe thin films
Creators: name: Rittinger, Johannes
name: Taptimthong, Piriya
name: Jogschies, Lisa
name: Wurz, Marc Christopher
name: Rissing, Lutz
Publisher: name: Bellingham, Wash. : SPIE
Year: 2015
Subjects: subject: Flexible substrates
subject: Magnetoresistive devices
subject: Permalloy
subject: Polyimides
subject: Actuators
subject: Anisotropy
subject: Embedded systems
subject: Magnetic anisotropy
subject: Magnetic devices
subject: Magnetic properties
subject: Magnetic thin films
subject: Magnetism
subject: Nickel alloys
subject: Polymer films
subject: Polymers
subject: Smart sensors
subject: Surface roughness
subject: Thin films
subject: Alternating magnetic field
subject: Flexible substrate
subject: Magneto-resistive effect
subject: Soft magnetic properties
subject: Soft magnetic thin films
subject: Vibrating sample magnetometer
subject: Substrates
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We investigated the impact of polymer substrates on the magnetic properties of soft magnetic thin films. Experiments were carried out to evaluate the performance of AMR (anisotropic magnetoresistive) sensors deposited on polymeric substrates and to give indications for the design of future sensors on flexible substrates. Sputtered permalloy (NiFe 81/19) was used as a soft magnetic thin film layer. As substrate materials, liquid polyimide precursors and DuPont Kapton® HN foil were examined. Surface roughness was determined for each substrate material. The dynamic of soft magnetic behavior of the permalloy thin films was observed in a homogenous alternating magnetic field. Resulting R-Hcurves were evaluated in regard to the magnitude of the magnetoresistive effect (ΔR / R0-ratio), as well as the resulting magnetic anisotropy of the tested samples. B-H-curves were obtained by means of a vibrating sample magnetometer (VSM). © 2015 COPYRIGHT SPIE.
MPEC 2023-M24 : DAILY ORBIT UPDATE (2023 June 17)
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

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.
Lab-level and low-cost fabrication technique for polymer based micro-optical elements and holographic structures
Creators: name: Rahlves, Maik
name: Rezem, Maher
name: Kelb, Christian
name: Boroz, Kristian
name: Gödeke, Dina
name: Schlangen, Sebastian
name: Reithmeier, Eduard
name: Roth, Bernhard
Publisher: name: Bellingham, Wash. : SPIE
Year: 2015
Subjects: subject: Costs
subject: Density (optical)
subject: Diffractive optical elements
subject: Digital devices
subject: Holography
subject: Liquid crystal displays
subject: Liquid crystals
subject: Lithography
subject: Microstructure
subject: Photoresists
subject: Polymers
subject: Sheet molding compounds
subject: Digital mirror devices
subject: Holographic structures
subject: Hot embossing process
subject: Illumination technology
subject: Liquid crystal devices
subject: Micro-optical elements
subject: Replication accuracies
subject: Topography measurement
subject: Holograms
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Polymer based diffractive optical elements have gained increasing interest due to their potential to be used in various applications such as illumination technology, micro optics and holography. We present a novel production process to fabricate polymer based diffractive optical elements and holograms. The process is based on maskless lithography, which is used to fabricate optical elements in photoresist. We discuss several lab-made lithography setups based on digital mirror devices and liquid crystal devices with respect to light efficiency, resolution and contrast. The whole optical setup is designed with an emphasis on low-cost setups, which can be easily implemented in an optical research lab. In a subsequent step, a copy of the microstructures is easily replicated into optical polymeric materials by means of a soft stamp hot embossing process step. The soft stamp is made from Polydimethylsiloxan, which is coated onto the microstructure in resist. The hot embossing process is carried out by a self-made and low-cost hot embossing machine. We present confocal topography measurements to quantify the replication accuracy of the process and demonstrate diffractive optical elements and holographic structures, which were fabricated using the process presented. © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.
title: Jörg Biel, Helmut Schlichterle, Michael Strobel und Andrea Zeeb (Hrsg.): Die Michelsberger Kultur und ihre Randgebiete - Probleme der Entstehung, Chronologie und des Siedlungswesens, 1998
Creators: name: Boelicke, Ulrich
Publisher: name: University Library Heidelberg
Year: 2014

description: Rezension zu: Jörg Biel, Helmut Schlichterle, Michael Strobel und Andrea Zeeb (Hrsg.): Die Michelsberger Kultur und ihre Randgebiete - Probleme der Entstehung, Chronologie und des Siedlungswesens.Kolloquium Hemmenhofen , 21.-23.2.1997. Materialhefte zur Archäologie in Baden-Württemberg Band 43. Konrad Theiss Verlag. Stuttgart 1998. 304 Seiten mit zahlreichen Abbildungen
On the development of a low-cost rigid borescopic fringe projection system
Creators: name: Schlobohm, Jochen
name: Pösch, Andreas
name: Kästner, Markus
name: Reithmeier, Eduard
Publisher: name: Bellingham, Wash. : SPIE
Year: 2015
Subjects: subject: Blisk
subject: Borescope
subject: Endoscope
subject: Fringe projection
subject: Measurement
subject: Optical measurement
subject: Projector
subject: Consumer electronics
subject: Endoscopy
subject: Geometry
subject: Industrial research
subject: Jet engines
subject: Measurements
subject: Optical data processing
subject: Optical instruments
subject: Uncertainty analysis
subject: Projection systems
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Examining the geometry of complex industrial free form objects, like a blade integrated disk (blisk) of a jet engine compressor, is currently subject to research. High measurement precision and speed are required and the complex geometry poses a challenge for state of the art measurement systems. In order to fulfill typical inspection requirements, the fringe projection methodology was adapted in this work to accomplish the task of fast and precise geometry examination. A low cost borescopic fringe projection system for 3D shape measurement based on consumer electronics combined with state of the art optics was developed. Nevertheless, it is able to provide measurement uncertainties comparable to professional systems. We are using a portable consumer LED-beamer, which we have modified to fit the optics of the borescope and a Raspberry Pi single-board computer with a 5 megapixel camera to capture the fringe patterns. With this setup and fringe projection algorithms, which have been developed by this institute over the last years, we were able to perform high quality measurements while still being suitable for a compact inspection system. Measurements with high point densities are possible even in narrow areas of parts with complex geometries like blisks. The measuring system and first measurement results will be presented at the conference. © 2015 SPIE.
MPI Transfer-Function Estimation with Receive-Coil Coupling
Creators: name: Boberg, Marija
name: Hunecke, Jacob
name: Thieben, Florian
name: Graeser, Matthias
name: Knopp, Tobias
Publisher: name: International Journal on Magnetic Particle Imaging IJMPI
Year: 2023

description: Time- and memory-consuming calibration measurements are a major drawback in system-matrix-based reconstructions in magnetic particle imaging (MPI). Especially, exchanging the receive coils requires new system matrices and therefore new calibration measurements. To reduce the number of such measurements, the MPI transfer function can be used to transfer the system matrix of one receive coil set to another. The transfer function can be obtained by a direct measurement or by estimation using a measured system matrix of each setup. In this abstract, we extend the latter to incorporate coupling of the receive coils while using only a few voxels of the system matrices. In this way, we can transfer system matrices between two different receive setups, both of which may contain non-orthogonal coils.
description: International Journal on Magnetic Particle Imaging IJMPI, Vol 9 No 1 Suppl 1 (2023)
3D registration of depth data of porous surface coatings based on 3D phase correlation and the trimmed ICP algorithm
Creators: name: Loftfield, Nina
name: Kästner, Markus
name: Reithmeier, Eduard
Publisher: name: Bellingham, Wash. : SPIE
Year: 2017
Subjects: subject: 3D phase correlation
subject: 3D registration
subject: porous surface
subject: TrICP
subject: Aluminum coatings
subject: Capillary flow
subject: Characterization
subject: Coatings
subject: Image registration
subject: Iterative methods
subject: Milling (machining)
subject: Porous materials
subject: Wear resistance
subject: Computational technique
subject: Confocal laser scanning microscope
subject: High-resolution reconstruction
subject: Iterative closest point algorithm
subject: Phase correlation
subject: Porous surface
subject: Surface reconstruction
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: A critical factor of endoprostheses is the quality of the tribological pairing. The objective of this research project is to manufacture stochastically porous aluminum oxide surface coatings with high wear resistance and an active friction minimization. There are many experimental and computational techniques from mercury porosimetry to imaging methods for studying porous materials, however, the characterization of disordered pore networks is still a great challenge. To meet this challenge it is striven to gain a three dimensional high resolution reconstruction of the surface. In this work, the reconstruction is approached by repeatedly milling down the surface by a fixed decrement while measuring each layer using a confocal laser scanning microscope (CLSM). The so acquired depth data of the successive layers is then registered pairwise. Within this work a direct registration approach is deployed and implemented in two steps, a coarse and a fine alignment. The coarse alignment of the depth data is limited to a translational shift which occurs in horizontal direction due to placing the sample in turns under the CLSM and the milling machine and in vertical direction due to the milling process itself. The shift is determined by an approach utilizing 3D phase correlation. The fine alignment is implemented by the Trimmed Iterative Closest Point algorithm, matching the most likely common pixels roughly specified by an estimated overlap rate. With the presented two-step approach a proper 3D registration of the successive depth data of the layer is obtained. © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.
Cochlear shape description and analyzing via medial models
Creators: name: Gaa, Johannes
name: Kahrs, Lüder Alexander
name: Müller, Samuel
name: Majdani, Omid
name: Ortmaier, Tobias
Publisher: name: Bellingham, Wash. : SPIE
Year: 2015
Subjects: subject: active shape models
subject: cochlea
subject: inner ear
subject: segmentation
subject: Atoms
subject: Cochlear implants
subject: Computerized tomography
subject: Image processing
subject: Image segmentation
subject: Medical computing
subject: Medical imaging
subject: Patient treatment
subject: Population statistics
subject: Active Shape Models
subject: Automated segmentation
subject: Computed tomography images
subject: Inner ear
subject: Medial representation
subject: Statistical shape model
subject: Surgical interventions
subject: Medical image processing
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Planning and analyzing of surgical interventions are often based on computer models derived from computed tomography images of the patient. In the field of cochlear implant insertion the modeling of several structures of the inner ear is needed. One structure is the overall helical shape of the cochlea itself. In this paper we analyze the cochlea by applying statistical shape models with medial representation. The cochlea is considered as tubular structure. A model representing the skeleton of training data and an atomic composition of the structure is built. We reduce the representation to a linear chain of atoms. As result a compact discrete model is possible. It is demonstrated how to place the atoms and build up their correspondence through a population of training data. The outcome of the applied representation is discussed in terms of impact on automated segmentation algorithms and known advantages of medial models are revisited. © 2015 SPIE.
Planet(esimal)s Around Stars with TESS (PAST) III: A Search for Triplet He I in the Atmospheres of Two 200 Myr-old Planets
Creators: name: Gaidos, Eric
name: Hirano, Teruyuki
name: Lee, Rena A.
name: Harakawa, Hiroki
name: Hodapp, Klaus
name: Jacobson, Shane
name: Kotani, Takayuki
name: Kudo, Tomoyuki
name: Kurokawa, Takashi
name: Kuzuhara, Masayuki
name: Nishikawa, Jun
name: Omiya, Masashi
name: Serizawa, Takuma
name: Tamura, Motohide
name: Ueda, Akitoshi
name: Vievard, Sebastien
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We report a search for excess absorption in the 1083.2 nm line of ortho (triplet) helium during transits of TOI-1807b and TOI-2076b, 1.25 and 2.5R$_{\rm Earth}$ planets on 0.55- and 10.4-day orbits around nearby $\sim$200~Myr-old K dwarf stars. We limit the equivalent width of any transit-associated absorption to $<$4 and $<$8 mA, respectively. We limit the escape of solar-composition atmospheres from TOI-1807b and TOI-2076b to $\lesssim$1 and $\lesssim$0.1M$_{\rm Earth}$ Gyr$^{-1}$, respectively, depending on wind temperature. The absence of a H/He signature for TOI-1807b is consistent with a measurement of mass indicating a rocky body and the prediction by a hydrodynamic model that any H-dominated atmosphere would be unstable and already have been lost. Differential spectra obtained during the transit of TOI-2076b contain a He I-like feature, but this closely resembles the stellar line and extends beyond the transit interval. Until additional transits are observed, we suspect this to be the result of variation in the stellar He I line produced by rotation of active regions and/or flaring on the young, active host star. Non-detection of escape could mean that TOI-2076b is more massive than expected, the star is less EUV-luminous, the models overestimate escape, or the planet has a H/He-poor atmosphere that is primarily molecules such as H$_2$O. Photochemical models of planetary winds predict a semi-major axis at which triplet He I observations are most sensitive to mass loss: TOI-2076b orbits near this optimum. Future surveys could use a distance criterion to increase the yield of detections.
description: Accepted to MNRAS
Delaunay stability via perturbations
Creators: name: Boissonnat, Jean-Daniel
name: Dyer, Ramsay
name: Ghosh, Arijit
Publisher: name: arXiv
Year: 2013
Subjects: subject: Computational Geometry (cs.CG)
subject: FOS: Computer and information sciences

description: We present an algorithm that takes as input a finite point set in Euclidean space, and performs a perturbation that guarantees that the Delaunay triangulation of the resulting perturbed point set has quantifiable stability with respect to the metric and the point positions. There is also a guarantee on the quality of the simplices: they cannot be too flat. The algorithm provides an alternative tool to the weighting or refinement methods to remove poorly shaped simplices in Delaunay triangulations of arbitrary dimension, but in addition it provides a guarantee of stability for the resulting triangulation.
Optimal continuous dependence estimates for fractional degenerate parabolic equations
Creators: name: Alibaud, Nathael
name: Cifani, Simone
name: Jakobsen, Espen
Publisher: name: arXiv
Year: 2013
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We derive continuous dependence estimates for weak entropy solutions of degenerate parabolic equations with nonlinear fractional diffusion. The diffusion term involves the fractional Laplace operator, $Δ^{α/2}$ for $α\in (0,2)$. Our results are quantitative and we exhibit an example for which they are optimal. We cover the dependence on the nonlinearities, and for the first time, the Lipschitz dependence on $α$ in the $BV$-framework. The former estimate (dependence on nonlinearity) is robust in the sense that it is stable in the limits $α\downarrow 0$ and $α\uparrow 2$. In the limit $α\uparrow 2$, $Δ^{α/2}$ converges to the usual Laplacian, and we show rigorously that we recover the optimal continuous dependence result of Cockburn and Gripenberg (J Differ Equ 151(2):231-251, 1999) for local degenerate parabolic equations (thus providing an alternative proof).
description: The final publication is available at Springer via http://dx.doi.org/10.1007/s00205-014-0737-x
High resolution magnetic nanoparticle tracers for CAR-T cell tracking, stroke, GI bleed and pulmonary embolism imaging in Magnetic Particle Imaging
Creators: name: Kuo, Renesmee
name: Saayujya, Chinmoy
name: Yeo, Kim Hwang
name: Rodrigo, Irati
name: Chandrasekharan, Prashant
name: Conolly, Steven
Publisher: name: International Journal on Magnetic Particle Imaging IJMPI
Year: 2023

description: Magnetic Particle Imaging (MPI) is a breakthrough in medical imaging technology. MPI already showed great promise towards cancer, gastrointestinal bleeds, pulmonary embolisms, stroke and WBC imaging, and it could soon provide a rapid, high-resolution and zero-radiation alternative to Nuclear Medicine studies like PET and SPECT. MPI could soon give unequivocal CAR-T cell immunotherapy treatment efficacy feedback in just 3 days instead of 3 months, allowing nimble treatment optimization for each patient. Currently, the biggest obstacle in MPI is the poor spatial resolution of MPI tracers. In this work, we report a recently discovered commercially available tracer — Synomag®-D — that shows a 3.5-fold resolution boost when imaged with a weaker drive field. This resolution boost could reduce the gradient cost and hardware constraints and bring MPI a step closer to clinical translation.
description: International Journal on Magnetic Particle Imaging IJMPI, Vol 9 No 1 Suppl 1 (2023)
Precise fabrication of ultra violet dielectric dispersion compensating mirrors
Creators: name: Willemsen, Thomas
name: Schlichting, S.
name: Kellermann, T.
name: Jupé, Marco
name: Ehlers, H.
name: Morgner, Uwe
name: Ristau, Detlev
Publisher: name: Bellingham, WA : S P I E - International Society for Optical Engineering
Year: 2015
Subjects: subject: chirp mirror
subject: design synthesis
subject: GDD
subject: IBS process
subject: in situ measurement
subject: ultra fast optics
subject: UV mirror
subject: Algorithms
subject: Deposition
subject: Design
subject: Dispersion compensation
subject: Electromagnetic fields
subject: Group delay
subject: Hafnium oxides
subject: Ion beams
subject: Lanthanum compounds
subject: Mirrors
subject: Optimization
subject: Sputtering
subject: Systems analysis
subject: Thin films
subject: Design synthesis
subject: Dispersion compensating
subject: Group delay dispersion
subject: In-situ measurement
subject: Near infrared spectral
subject: Precise fabrications
subject: Re-optimization algorithms
subject: Ultrafast optics
subject: Infrared devices
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: The present contribution is concentrated on an improved method to manufacture dielectric dispersion compensating mirrors in the ultra violet (UV) range by applying a novel online phase monitoring device. This newly developed measurement tool monitors the group delay (GD) and group delay dispersion (GDD) of the electromagnetic field in situ during the deposition of the layer system. Broad band monitoring of the phase enhances the accuracy in the near infrared spectral range (NIR), significantly. In this study, the correlation of the GDD in the NIR and in the UV spectral range is investigated. A design synthesis is introduced to achieve optimum reflection and GDD target values in the UV and NIR. This requires a similar behavior of both bands according to deposition errors, to guarantee switching off the UV GDD target band proper, while monitoring the GDD in the NIR spectral range. The synthesis results in a design, characterized by a GDD of -100fs2±20fs2 between 330nm and 360nm in the UV and by -450fs2±10fs2 within 820nm to 870nm in the NIR. The fabricated sample, applying an ion beam sputtering process, consists of a 9μm layer stack of Hafnium oxide and Silicon dioxide. The first layers of the stack are switched and controlled by a conventional in situ spectrometric broad band monitoring in conjunction with a forward re-optimization algorithm, which also manipulates the layers remaining for deposition at each switching event. To accomplish the demanded GDD-spectra, the last layers are controlled by the novel in situ GDD monitor. © 2015 SPIE.
Femtosecond-Terawatt Hard X Ray Pulse Generation with Chirped Pulse Amplification on a Free Electron Laser
Creators: name: Li, Haoyuan
name: MacArthur, James
name: Littleton, Sean
name: Dunne, Mike
name: Huang, Zhirong
name: Zhu, Diling
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: Advances of high intensity lasers have opened up the field of strong field physics and led to a broad range of technological applications. Recent x ray laser sources and optics development makes it possible to obtain extremely high intensity and brightness at x ray wavelengths. In this paper, we present a system design that implements chirped pulse amplification for hard x ray free electron lasers. Numerical modeling with realistic experimental parameters show that near-transform-limit single-femtosecond hard x ray laser pulses with peak power exceeding 1 TW and brightness exceeding $4\times10^{35}~$s$^{-1}$mm$^{-2}$mrad$^{-2}$0.1\%bandwdith$^{-1}$ can be consistently generated. Realization of such beam qualities is essential for establishing systematic and quantitative understanding of strong field x-ray physics and nonlinear x ray optics phenomena.
description: 23 pages, 7 figures, Accepted by PRL
A Landau--Ginzburg mirror theorem without concavity
Creators: name: Guéré, Jérémy
Publisher: name: arXiv
Year: 2013
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: We provide a mirror symmetry theorem in a range of cases where the state-of-the-art techniques relying on concavity or convexity do not apply. More specifically, we work on a family of FJRW potentials named after Fan, Jarvis, Ruan, and Witten's quantum singularity theory and viewed as the counterpart of a non-convex Gromov--Witten potential via the physical LG/CY correspondence. The main result provides an explicit formula for Polishchuk and Vaintrob's virtual cycle in genus zero. In the non-concave case of the so-called chain invertible polynomials, it yields a compatibility theorem with the FJRW virtual cycle and a proof of mirror symmetry for FJRW theory.
description: 50 pages (accepted in Duke Mathematical Journal)
Direct in situ GDD measurement in optical coating process
Creators: name: Schlichting, S.
name: Willemsen, Thomas
name: Ehlers, H.
name: Morgner, Uwe
name: Ristau, Detlev
Publisher: name: Bellingham, WA : S P I E - International Society for Optical Engineering
Year: 2015
Subjects: subject: chirped mirrors
subject: FTSI
subject: GD
subject: GDD
subject: in situ measurement
subject: optical coatings
subject: optical thin films
subject: STFT
subject: Coatings
subject: Dispersions
subject: Frequency domain analysis
subject: Gadolinium
subject: Group delay
subject: Laser mirrors
subject: Light sources
subject: Michelson interferometers
subject: Mirrors
subject: Optical coatings
subject: Systems analysis
subject: Thin films
subject: Ultrashort pulses
subject: Chirped mirrors
subject: In-situ measurement
subject: Optical thin films
subject: Optical films
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: In the presented work a fast frequency domain measurement system to determine group delay (GD) and group delay dispersion (GDD) of optical coatings is proposed. The measurements are performed in situ directly on moving substrates during the thin film coating process. The method is based on a Michelson interferometer, which is equipped with a high power broad band light source and a fast spectrometer. Especially for the production of chirped mirrors it is advantageous to obtain group delay and group delay dispersion data of the last layers. This additional information allows for online corrections of coating errors to enhance the precision of complex interference filters for short pulse applications. © 2015 SPIE.
The Vervaat transform of Brownian bridges and Brownian motion
Creators: name: Lupu, Titus
name: Pitman, Jim
name: Tang, Wenpin
Publisher: name: arXiv
Year: 2013
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60C05, 60G17, 60J65

description: For a continuous function $f \in \mathcal{C}([0,1])$, define the Vervaat transform $V(f)(t):=f(τ(f)+t \mod1)+f(1)1_{\{t+τ(f) \geq 1\}}-f(τ(f))$, where $τ(f)$ corresponds to the first time at which the minimum of $f$ is attained. Motivated by recent study of quantile transforms of random walks and Brownian motion, we investigate the Vervaat transform of Brownian motion and Brownian bridges with arbitrary endpoints. When the two endpoints of the bridge are not the same, the Vervaat transform is not Markovian. We describe its distribution by path decomposition and study its semi-martingale property. The same study is done for the Vervaat transform of unconditioned Brownian motion, the expectation and variance of which are also derived.
description: 31 Pages, 4 figures. This paper (published by http://ejp.ejpecp.org/article/view/3744) is combined of two papers "On Vervaat transform of Brownian bridges and Brownian motion"(arXiv:1307.7952) by Jim Pitman and Wenpin Tang, and "Some points on Vervaat's transform of Brownian bridges and Brownian motion"(arXiv:1308.3759) by Titus Lupu
The MeerKAT Galaxy Clusters Legacy Survey: star formation in massive clusters at 0.15 < z < 0.35
Creators: name: Kesebonye, Kabelo C.
name: Hilton, Matt
name: Knowles, Kenda
name: Cotton, William D.
name: Clark, Tracy E.
name: Loubser, Susan I.
name: Moodley, Kavilan
name: Sikhosana, Sinenhlanhla P.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We investigate dust-unbiased star formation rates (SFR) as a function of the environment in 20 massive clusters ($M_{200}>4\times10^{14} {\rm M}_{\odot}$) between $0.15
description: 13 pages, 9 figures. To be published in MNRAS
TESS uncloaks the secondaries in hydrogen-deficient binaries
Creators: name: Jeffery, C. Simon
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: $\upsilon$ Sgr is the prototype of four known hydrogen-deficient binary (HdB) systems. These are characterised by a hydrogen-deficient A-type primary, variable hydrogen emission lines, and a normally unseen secondary presumed to be an upper main-sequence star. Orbital periods range from tens of days to 360 d. TESS observations of all four HdBs show a flux variation with well-defined period in the range 0.5 -- 0.9 d, too short to be associated with the supergiant primary, and more likely to be the rotation period of the secondary and associated with a chemical surface asymmetry or a low-order non-radial oscillation. The observed rotation period supports a recent analysis of the $\upsilon$ Sgr secondary. The observations give a direct glimpse of the secondary in all four systems, and should help to explain how the primary has been stripped to become a low-mass hydrogen remnant.
description: MNRAS: Accepted 2022 November 05. Submitted 2022 October 22, 5 pages
Level Curve Configurations and Conformal Equivalence of Meromorphic Functions
Creators: name: Richards, Trevor
Publisher: name: arXiv
Year: 2013
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics

description: Let $f=B_1/B_2$ be a ratio of finite Blaschke products having no critical points on $\partial\mathbb{D}$. Then $f$ has finitely many critical level curves (level curves containing critical points of $f$) in the disk, and the non-critical level curves interpolate smoothly between the critical level curves. Thus, to understand the geometry of all the level curves of $f$, one needs only understand the finitely many critical level curves of $f$. In this paper, we show that in fact such a function $f$ is determined not just geometrically but conformally by the configuration of critical level curves. That is, if $f_1$ and $f_2$ have the same configuration of critical level curves, then there is a conformal map $ϕ$ such that $f_1\equiv f_2\circϕ$. We then show that every configuration of critical level curves which could come from an analytic function is instantiated by a polynomial. We also include a new proof of a theorem of Bôcher (which is an extension of the Gauss--Lucas theorem to rational functions) using level curves.
CORPOS INELUTÁVEIS: PROCESSOS DE ADOECIMENTO MENTAL E AS CONSTITUIÇÕES DE DIGNIDADE HUMANA EM NOSSO TEMPO
Creators: name: Almeida, Enzo Mazzotti
name: Ramos, Waldenilson Teixeira
Publisher: name: Zenodo
Year: 2023
Subjects: Política
Luto
Pandemia COVID-19

description: SOBRE O MATERIAL: Este e-post foi apresentado no 1º CONGRESSO INTERDISCIPLINAR EM SAÚDE MENTAL – 1º COBISMENT. O material em questão foi desenvolvido a fim de realizar a exposição da pesquisa intitulada por: CORPOS INELUTÁVEIS: PROCESSOS DE ADOECIMENTO MENTAL E AS CONSTITUIÇÕES DE DIGNIDADE HUMANA EM NOSSO TEMPO na 1º COBISMENT. SOBRE O TRABALHO:  A fim de confeccionar um trabalho de relato de pesquisa, realiza-se também um trabalho denúncia. Se debruçar sobre um estudo que evidencia as dinâmicas políticas de nosso tempo, ao que se refere os processos de desumanização e estabelecimentos de estatutos de dignidade humana que se endereça a determinados corpos, é uma tarefa urgente. Frente a isso, este trabalho visa tecer reflexões sobre as políticas de desumanização e como tal processo é fator contribuinte ao adoecimento mental em nossa era.
description: {"references": ["BUTLER, Judith. A for\u00e7a da n\u00e3o-viol\u00eancia: um v\u00ednculo \u00e9tico-pol\u00edtico. 1. ed. S\u00e3o Paulo: Boitempo, 2021.", "MBEMBE, Achille. Necropol\u00edtica. 1. ed. S\u00e3o Paulo: N-1 Edi\u00e7\u00f5es, 2018.", "RESENDE, Gabriel. Contar nossos mortos. Mnemosine, Campina Grande, vol. 8, n. 2, p. 24-37, 10 nov. 2022. Universidade do Estado do Rio de Janeiro."]}
Multitasking
Creators: name: Anzelika Zaiceva
Publisher: name: Dipartimento di Economia Marco Biagi - Università degli Studi di Modena e Reggio Emilia
Year: 2022
Subjects: subject: household production, multitasking, simultaneous activities, time use
subject: household production
subject: multitasking
subject: simultaneous activities
subject: time use

description: This chapter reviews economic studies on multitasking in household production. Whereas multitasking or task juggling in the workplace has been analyzed more widely, economic literature on multitasking in a household is relatively scarce. The chapter first provides relevant measures of such multitasking activities, discusses time diary data, and presents some empirical facts employing Harmonized European Time Use Survey data. It then reviews theoretical and empirical contributions to this topic, focusing on childcare, food consumption, and remote work. It also reviews the determinants of multitasking and identifies the factors that are more likely to affect these activities. In addition, it discusses multitasking by certain groups, such as ethnic minorities and children. Finally, it offers policy implications and suggestions for future research.
title: Helmut Spatz: Das mittelneolithische Gräberfeld von Trebur, Kreis Groß-Gerau
Creators: name: Eisenhauer, Ursula
Publisher: name: University Library Heidelberg
Year: 2014

description: Rezension zu: Helmut Spatz: Das mittelneolithische Gräberfeld von Trebur, Kreis Groß-Gerau, Mit Beiträgen von Angela von den Driesch, Klaus Fahlbusch, Burkhard Jacobshagen, Bernd Kromer, Manfred Kunter und Michael R. Reiber.
Band I: Textteil (386 S. mit zahlreichen Abb. und Fotos; engl, und frz. Zusammenfassung); Band II: Katalog, Literaturverzeichnis und Tafeln (ca. 90 S., 188 Tafeln und eine Beilage). Materialien zur Vor- und Frühgeschichte von Hessen 19 (Wiesbaden 1999)
Bouncing cosmology in modified gravity with higher-order Gauss-Bonnet curvature term
Creators: name: Lohakare, Santosh V
name: Tello-Ortiz, Francisco
name: Tripathy, S. K.
name: Mishra, B.
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper, we have studied the bouncing behavior of the cosmological models formulated at the background of the Hubble function in the F(R, G) theory of gravity, where R and G denote the Ricci scalar and Gauss-Bonnet invariant. The actions of bouncing cosmology are studied under consideration of different viable models and can resolve the difficulty of singularity in standard Big-Bang cosmology. Both models show bouncing behavior and satisfy the bouncing cosmological properties. Models based on dynamical, deceleration, and energy conditions indicate the accelerating behavior at the late evolution time. Phantom at the bounce epoch is analogous to a quintessence behavior. Finally, we formulate the perturbed evolution equations and investigate the stability of two bouncing solutions.
description: 14 pages, 10 figures
Julia's equation and differential transcendence
Creators: name: Aschenbrenner, Matthias
name: Bergweiler, Walter
Publisher: name: arXiv
Year: 2013
Subjects: subject: Complex Variables (math.CV)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 39B12, 30D05, 34M25, 13F25

description: We show that the iterative logarithm of each non-linear entire function is differentially transcendental over the ring of entire functions, and we give a sufficient criterion for such an iterative logarithm to be differentially transcendental over the ring of convergent power series.
description: 17 pages
La variante infinitésimale de la formule des traces de Jacquet-Rallis pour les groupes linéaires
Creators: name: Zydor, Michał
Publisher: name: arXiv
Year: 2013
Subjects: subject: Number Theory (math.NT)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: We establish an infinitesimal version of the Jacquet-Rallis trace formula for general linear groups. Our formula is obtained by integrating a kernel truncated a la Arthur multiplied by the absolute value of the determinant to the power $s \in \mathbb{C}$. It has a geometric side which is a sum of distributions $I_{\mathfrak{o}}(s, \cdot)$ indexed by the invariants of the adjoint action of $\mathrm{GL}_n(\mathrm{F})$ on $\mathfrak{gl}_{n+1}(\mathrm{F})$ as well as a "spectral side" consisting of the Fourier transforms of the aforementioned distributions. We prove that the distributions $I_{\mathfrak{o}}(s, \cdot)$ are invariant and depend only on the choice of the Haar measure on $\mathrm{GL}_n(\mathbb{A})$. For regular semi-simple classes $\mathfrak{o}$, $I_{\mathfrak{o}}(s, \cdot)$ is a relative orbital integral of Jacquet-Rallis. For classes $\mathfrak{o}$ called relatively regular semi-simple, we express $I_{\mathfrak{o}}(s, \cdot)$ in terms of relative orbital integrals regularised by means of zeta functions.
description: 42 pages, in French
Optically thick, nonlocal, inhomogeneous, stationary jet model for high-energy radiation from blazars: Application to Mrk 421
Creators: name: Banasinski, Piotr
name: Bednarek, Wlodek
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: There is an increasing number of observational evidence that very high energy gamma-rays in radio-loud active galactic nuclei are produced in the direct vicinity of a supermassive black hole (SMBH), close to the base of a relativistic jet. In the case of some blazars, the angle between the jet axis and the observer's line of sight is smaller than the angular extent of the jet. Gamma-rays that are produced close to SMBH therefore have to propagate in the nonthermal radiation of the extended jet before reaching the observer. This gamma-ray emission can be strongly absorbed in the extended jet radiation, producing a second generation of electron-positron pairs that loses energy mainly via the synchrotron process. We show that this advanced inhomogeneous jet model can explain the multiwavelength spectrum of the BL Lac object Mrk 421 in a nonflaring state for reasonable parameters of the jet and the SMBH. Moreover, we argue that synchrotron emission from the secondary electron-positron pairs, which appear as a result of absorption of gamma-rays that are produced close to the SMBH within the jet radiation, is consistent with the concave hard X-ray emission observed from Mrk 421.
description: 8 pages, 5 figures
Satisfaction with democracy in Europe: assessing the role of public support measures and institutional trust
Creators: name: Poma, E.
name: Pistoresi, B.
Publisher: name: Dipartimento di Economia Marco Biagi - Università degli Studi di Modena e Reggio Emilia
Year: 2022
Subjects: subject: Government Support, Institutional Trust, Satisfaction with Democracy, Public Health, Social Dilemma
subject: Government Support
subject: Institutional Trust
subject: Satisfaction with Democracy
subject: Public Health
subject: Social Dilemma

description: This article analyses the role played by the perceived public support measures introduced during Covid-19 and institutional trust in the mechanism linking the impact of economic hardship suffered by European citizens and their satisfaction with democracy. To this aim, we use the European Living, Working and Covid-19 survey conducted by Eurofound (Eurofound 2020). Firstly, Ancova tests over different waves are conducted to delve into the citizens' perceptions of proximity to institutions from the beginning of spring 2020 to the spring of 2021. Secondly, we estimate a mediation model on the wave that has registered the lowest rate of democracy satisfaction and public trust. The results show that, since the beginning of the pandemic, there has been an overall detachment of citizens from institutions, resulting from an overall decline in institutional trust and democracy satisfaction over time. They also suggest that European citizens' financial and economic difficulties affect their satisfaction with democracy in heterogeneous ways, depending on the degree to which they perceive the quality of public support and the level of trust in institutions: a deterioration in the levels of trust in institutions and in the evaluation of the public support, lead to a stronger negative effect of economic-distress on the citizens’ satisfaction with democracy. This study contributes to advancing our understanding of what contributes to citizens' trust and satisfaction with democracy. It suggests that the deterioration of satisfaction with democracy and trust in institutions may limit the citizens’ propensity to cooperate with public authorities and, as consequence, the ability of governments to deal effectively with health and socio-economic crises.