cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Comparison of LASER and LED illumination for fiber optic fringe projection
Creators: name: Matthias, Steffen
name: Kästner, Markus
name: Reithmeier, Eduard
Publisher: name: Bellingham, Wash. : SPIE
Year: 2016
Subjects: subject: Fringe Projection
subject: Image Fiber
subject: LASER
subject: LED
subject: Phase-Shift
subject: Speckle
subject: Inspection
subject: Laser beams
subject: Lasers
subject: Light sources
subject: Machinery
subject: Optical data processing
subject: Phase noise
subject: Phase shift
subject: Projection systems
subject: Digital micro-mirror device
subject: Fringe projection
subject: Fringe projection system
subject: High resolution image
subject: Image fiber
subject: Optical inspection systems
subject: Optical measurement methods
subject: Optical power measurements
subject: Light emitting diodes
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: The inspection of functional elements is a crucial part of modern production cycles. However, with higher integration of production machinery and products, the accessibility for measurement systems is more and more limited. A solution for this problem can be found in endoscopy techniques, which are able to transport the image information for optical measurement methods. In this paper, an optical inspection system based on the fringe projection proifllometry technique is presented. The iflber-optic fringe projection system uses two high-resolution image iflbers to connect a compact sensor head to the pattern generation and camera unit. In order to keep inspection times low, the system is developed with particular focus on fast projection times. This can be achieved by using a digital micro-mirror device, which is capable of projecting grey-scale patterns at a rate of more than 10 images per second. However, due to the low numerical aperture of the optical iflbers, a limiting factor for the pattern rate is the illumination path of the pattern generator. Two different designs of the illumination path are presented, which are based on a LASER light source as well as a LED light source. Due to low beam divergence and high intensities LASERs are well suited for iflber coupling. Unfortunately, the coherent property of the light has negative effects in certain measurement applications, as interference patterns, the so called speckle, appear on rough surfaces. Although speckle reducing methods are employed in the LASER beam path, the emergence of interference cannot be prevented completely. As an alternative, an illumination path based on a LED light source is demonstrated. To compare the effects of the speckle, based on measurements on a planar calibration standard both designs are compared in terms of phase noise, which is directly related to the noise in the reconstructed 3-D point data. Additionally, optical power measurements of both methods are compared to give an estimation of coupling eiflciency. Finally, the capabilities of the system are shown based on measurements of a micro-contour standard. © 2016 SPIE.
title: Inhalt
Creators: name: Redaktion, Die
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 13, Nr. 3-4 (1970), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
title: Plattenhardt. Kr. Eßlingen. Nordwürttemberg. Ev. Pfarrkirche St. Antholianus
Creators: name: Fehring, Günter P.
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 13, Nr. 3-4 (1970), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Starshaped locally convex hypersurfaces with prescribed curvature and boundary
Creators: name: Su, Chenyang
Publisher: name: arXiv
Year: 2013
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C21, 53C42, 35J60, 58J32

description: In this paper we find strictly locally convex hypersurfaces in $\mathbb{R}^{n+1}$ with prescribed curvature and boundary. The main result is that if the given data admits a strictly locally convex radial graph as a subsolution, we can find a radial graph realizing the prescribed curvature and boundary. As an application we show any smooth domain on the boundary of a compact strictly convex body can be deformed to a smooth hypersurface with the same boundary (inside the convex body) and realizing any prescribed curvature function smaller than the curvature of the body.
description: 24 pages. References updated. Published in The Journal of Geometric Analysis
title: Stammheim. Kr. Calw. Südwürttemberg/Hohenzollern. Ehemalige Wasserburg „Schlößle"
Creators: name: Lutz, Dietrich
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 13, Nr. 3-4 (1970), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
In vitro tuber induction and growth improvement in Dactylorhiza umbrosa by osmotic pretreatments
Creators: name: Rostami-Balan, Saeideh
name: Daylami, Shirin Dianati
name: Karimi, Soheil
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biochemistry
subject: Space Science
subject: Cell Biology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Marine Biology
subject: Plant Biology

description: Harvesting Dactylorhiza umbrosa from natural habitats for salep production (powdered dried tuber) has endangered the existence of this species. Mass production of tubers is possible in vitro. Different osmotic pretreatments for inducing tuber formation in D. umbrosa were investigated. Seeds were germinated in Fast medium and protocorm derived seedlings measuring 2 cm in height with roots were subjected to 2% and 4% w/v of different osmotica including sorbitol, mannitol, and polyethylene glycol 4000 (PEG), increased concentrations of sugars [sucrose 18 g·L−1+fructose 7.5 g·L−1 (sugar 1.5x); sucrose 24 g·L−1+fructose 10 g·L−1 (sugar 2.0x)] and non-pretreated control (sugars 1x; 12 g·L−1 sucrose+5 g·L−1 fructose) for 29 days. Then, the seedlings were transferred to jars containing Fast medium (similar to the control treatment) supplemented with 1 g·L−1 activated charcoal. After 70 days, survival, growth, tuber formation, shoot proline and photosynthetic pigments, and shoot and roots soluble and reserve carbohydrates were determined. PEG and mannitol 2% pretreatments increased root number and photosynthetic pigments. The pretreatments did not affect shoot proline concentration, but induced soluble and reserve sugars accumulation in tubers. According to shoot growth improvement and obtaining the highest tuber number and root carbohydrates content, PEG 2% pretreatment was suggested for D. umbrosa tuberization.
Toward automated cochlear implant insertion using tubular manipulators
Creators: name: Granna, Josephine
name: Rau, Thomas S.
name: Nguyen, Thien-Dang
name: Lenarz, Thomas
name: Majdani, Omid
name: Burgner-Kahrs, Jessica
Publisher: name: Bellingham, Wash. : SPIE
Year: 2016
Subjects: subject: continuum robots
subject: robot assisted surgery
subject: tubular manipulators
subject: Algorithms
subject: Cochlear implants
subject: Curve fitting
subject: Electrodes
subject: Medical imaging
subject: Optimization
subject: Robotic surgery
subject: Robotics
subject: Cochlear electrodes
subject: Cochlear implant electrodes
subject: Continuum robot
subject: Electrode arrays
subject: Follow the leaders
subject: Insertion process
subject: Optimization algorithms
subject: Robot-assisted surgery
subject: Manipulators
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: During manual cochlear implant electrode insertion the surgeon is at risk to damage the intracochlear fine-structure, as the electrode array is inserted through a small opening in the cochlea blindly with little force-feedback. This paper addresses a novel concept for cochlear electrode insertion using tubular manipulators to reduce risks of causing trauma during insertion and to automate the insertion process. We propose a tubular manipulator incorporated into the electrode array composed of an inner wire within a tube, both elastic and helically shaped. It is our vision to use this manipulator to actuate the initially straight electrode array during insertion into the cochlea by actuation of the wire and tube, i.e. translation and slight axial rotation. In this paper, we evaluate the geometry of the human cochlea in 22 patient datasets in order to derive design requirements for the manipulator. We propose an optimization algorithm to automatically determine the tube set parameters (curvature, torsion, diameter, length) for an ideal final position within the cochlea. To prove our concept, we demonstrate that insertion can be realized in a follow-the-leader fashion for 19 out of 22 cochleas. This is possible with only 4 different tube/wire sets. © 2016 SPIE.
title: Veringendorf. Kr. Sigmaringen. Hohenzollern. Kath. Pfarrkirche St. Martin
Creators: name: Fehring, Günter P.
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 13, Nr. 3-4 (1970), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Biphoton engineering using modal spatial overlap on-chip
Creators: name: Ding, Xiangyan
name: Ma, Jing
name: Tan, Liying
name: Helmy, Amr S.
name: Kang, Dongpeng
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Photon pairs generated by spontaneous parametric down-conversion are essential for optical quantum information processing, in which the quality of biphoton states is crucial for the performance. To engineer the biphoton wavefunction (BWF) on-chip, the pump envelope function and the phase matching function are commonly adjusted, while the modal field overlap has been considered as a constant in the frequency range of interest. In this work, by utilizing modal coupling in a system of coupled waveguides, we explore the modal field overlap as a new degree of freedom for biphoton engineering. We provide design examples for on-chip generations of polarization entangled photons and heralded single photons, respectively. This strategy can be applied to waveguides of different materials and structures, offering new possibilities for photonic quantum state engineering.
title: Aufruf zur Meldung von Bau- und Planungsvorhaben an die staatliche Denkmalpflege
Creators: name: Redaktion, Die
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 13, Nr. 3-4 (1970), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Rapid prototyping of reflectors for vehicle lighting using laser activated remote phosphor
Creators: name: Lachmayer, Roland
name: Kloppenburg, Gerolf
name: Wolf, Alexander
Publisher: name: Bellingham, Wash. : SPIE
Year: 2015
Subjects: subject: Automotive Lighting
subject: Laser Activated Remote Phosphor
subject: Laser Light Source
subject: Rapid Prototypingof Optical Components
subject: Selective Laser Melting
subject: 3D printers
subject: Automobile manufacture
subject: Diodes
subject: Efficiency
subject: Headlights
subject: Light emission
subject: Light sources
subject: Lighting
subject: Luminance
subject: Melting
subject: Milling (machining)
subject: Phosphors
subject: Product development
subject: Rapid prototyping
subject: Reflection
subject: Semiconductor lasers
subject: Solid state devices
subject: Automotive lighting
subject: Laser light sources
subject: Optical components
subject: Remote phosphors
subject: Selective laser melting
subject: Light emitting diodes
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Bright white light sources are of significant importance for automotive front lighting systems. Todays upper class vehicles mainly use HID or LED as light source. As a further step in this development laser diode based systems offer high luminance, efficiency and allow the realization of new styling concepts and new dynamic lighting functions. These white laser diode systems can either be realized by mixing different spectral sources or by combining diodes with specific phosphors. Based on the approach of generating light using a laser and remote phosphor, lighting modules are manufactured. Four blue laser diodes (450 nm) are used to activate a phosphor coating and thus to achieve white light. A segmented paraboloid reflector generates the desired light distribution for an additional car headlamp. We use high speed milling and selective laser melting to build the reflector system for this lighting module. We compare the spectral reflection grade of these materials. Furthermore the generated modules are analyzed regarding their efficiency and light distribution. The use of Rapid Prototyping technologies allows an early validation of the chosen concept and is supposed to reduce cost and time in the product development process significantly. Therefor we discuss costs and times of the applied manufacturing technologies.
Ergodic Theorem involving additive and multiplicative groups of a field and $\{x+y,xy\}$ patterns
Creators: name: Bergelson, Vitaly
name: Moreira, Joel
Publisher: name: arXiv
Year: 2013
Subjects: subject: Combinatorics (math.CO)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 37A45, 05D10 (Primary), 05A18, 11T99, 28D15 (Secondary)

description: We establish a "diagonal" ergodic theorem involving the additive and multiplicative groups of a countable field $K$ and, with the help of a new variant of Furstenberg's correspondence principle, prove that any "large" set in $K$ contains many configurations of the form $\{x+y,xy\}$. We also show that for any finite coloring of $K$ there are many $x,y\in K$ such that $x,x+y$ and $xy$ have the same color. Finally, by utilizing a finitistic version of our main ergodic theorem, we obtain combinatorial results pertaining to finite fields. In particular we obtain an alternative proof for a result obtained by Cilleruelo [11], showing that for any finite field $F$ and any subsets $E_1,E_2\subset F$ with $|E_1||E_2|>6|F|$, there exist $u,v\in F$ such that $u+v\in E_1$ and $uv\in E_2$.
description: 25 pages, small changes made according to comments from the referees. To appear, Ergodic Theory Dyn. Syst
title: Die Stadtbefestigung von Zell am Harmersbach, Kreis Wolfach. Maßnahmen zu ihrer Erhaltung
Creators: name: Hesselbacher, Martin
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 1, Nr. 1 (1972), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Simple Lie groups without the Approximation Property II
Creators: name: Haagerup, Uffe
name: de Laat, Tim
Publisher: name: arXiv
Year: 2013
Subjects: subject: Operator Algebras (math.OA)
subject: Functional Analysis (math.FA)
subject: Group Theory (math.GR)
subject: FOS: Mathematics

description: We prove that the universal covering group $\widetilde{\mathrm{Sp}}(2,\mathbb{R})$ of $\mathrm{Sp}(2,\mathbb{R})$ does not have the Approximation Property (AP). Together with the fact that $\mathrm{SL}(3,\mathbb{R})$ does not have the AP, which was proved by Lafforgue and de la Salle, and the fact that $\mathrm{Sp}(2,\mathbb{R})$ does not have the AP, which was proved by the authors of this article, this finishes the description of the AP for connected simple Lie groups. Indeed, it follows that a connected simple Lie group has the AP if and only if its real rank is zero or one. By an adaptation of the methods we use to study the AP, we obtain results on approximation properties for noncommutative $L^p$-spaces associated with lattices in $\widetilde{\mathrm{Sp}}(2,\mathbb{R})$. Combining this with earlier results of Lafforgue and de la Salle and results of the second named author of this article, this gives rise to results on approximation properties of noncommutative $L^p$-spaces associated with lattices in any connected simple Lie group.
description: Final version. Continuation of the work in 1201.1250 and 1208.5939
Coexistence of active and hydrodynamic turbulence in two dimensional active nematics
Creators: name: Rorai, C.
name: Toschi, F.
name: Pagonabarraga, I.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: In active nematic liquid crystals activity is able to drive chaotic spatiotemporal flows referred to as active turbulence. Active turbulence has been characterized through theoretical and experimental work as a low Reynolds number phenomenon. We show that, in two-dimensions, the active forcing alone is able to trigger hydrodynamic turbulence leading to the coexistence of active and inertial turbulence. This type of flows develops for sufficiently active and extensile flow-aligning nematics. We observe that the combined effect of an extensile nematic and large values of the flow-aligning parameter leads to a broadening of the elastic energy spectrum that promotes a growth of kinetic energy able to trigger an inverse energy cascade.
title: Die Restaurierung einer Madonnenstatue an der Engelsmühle bei Philippsburg, Kreis Bruchsal
Creators: name: Huth, Hans
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 1, Nr. 1 (1972), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
No spatially selective place cells contrasts emergent evidence for early novelty gist-like conceptual encoding in the human medial temporal lobe.
Creators: name: Mneruo, Benjamin R. Netherwood
Publisher: name: University of Leicester
Year: 2023
Subjects: Uncategorized

description: The 2014 Nobel prize was awarded to O’Keefe, Moser & Moser for discovering spatially allocentric encoding place and grid cell within the murine medial temporal lobe. Contrastingly, in equivalent structures, human concept cells respond to high-level abstract encodings such as ‘Jennifer Aniston’, independent of scale, angle, context, luminosity - regardless of location. Presently, some sparse studies indicate a presence of human place cells. This research aims to ratify those claims, akin to our supposedly archetypal murine models with highly spatially constrained ‘place cells’. Secondarily, emergence of concept cells is entirely undocumented in humans, and herein, undertaken. Epileptic volunteers undergoing curative surgery receiving intracranial electroencephalography implant were placed in head-mounted virtual experiments. Participants virtually foraged for coins in enclosures. Place cells were assessed through permutation methods including information theory, sparsity, intra-experimental place stability, naïve Bayesian decoding, and replicating a criterion presented by one lab as evidence of place cells. Across 6 patients, 723 neurones were recorded: not a single substantial place cell was observed, reflected in multiple inconsistent population metrics. Further, this contrasted against artificially simulated place cells, all despite participants behavioural learning. This indicated that human hippocampal spatial encodings may not be as robust as previously thought. Separately, subjects entered highly sensory-controlled, non-navigable, passively narrated experiences of digital characters in ambient environments. Participants were required to retain conceptual episodic information, with novel neural concept encoding appraised through baseline-stimulus firing criterion and parametricity. Population responses were poor, but some units indicated broader temporal firing profile units relative to established concept cells, which stereotypically exhibit highly repeatable firing onsets. In reflection, as a caveat, this study, suffered an internal replicability issue. Based upon these studies findings, principally lacking human place cells, original contributions to knowledge are theorised – naturally converging increasingly disjunctive spatial murine and abstract primate hippocampal literatures.
Fast in-situ tool inspection based on inverse fringe projection and compact sensor heads
Creators: name: Matthias, Steffen
name: Kästner, Markus
name: Reithmeier, Eduard
Publisher: name: Bellingham, Wash. : SPIE
Year: 2016
Subjects: subject: Endoscopy
subject: Fringe Projection
subject: Inspection
subject: Ray-Tracing
subject: Single-shot
subject: Tolerance checking
subject: Computer aided design
subject: Fits and tolerances
subject: Gears
subject: Geometry
subject: Image processing
subject: Inverse problems
subject: Machinery
subject: Optical data processing
subject: Optical projectors
subject: Ray tracing
subject: Units of measurement
subject: Wheels
subject: Continuous improvement process
subject: Fringe projection
subject: Geometric tolerancing
subject: Geometry deviations
subject: Gradient index lens
subject: Reference measurements
subject: Single shots
subject: Tolerance specifications
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Inspection of machine elements is an important task in production processes in order to ensure the quality of produced parts and to gather feedback for the continuous improvement process. A new measuring system is presented, which is capable of performing the inspection of critical tool geometries, such as gearing elements, inside the forming machine. To meet the constraints on sensor head size and inspection time imposed by the limited space inside the machine and the cycle time of the process, the measuring device employs a combination of endoscopy techniques with the fringe projection principle. Compact gradient index lenses enable a compact design of the sensor head, which is connected to a CMOS camera and a flexible micro-mirror based projector via flexible fiber bundles. Using common fringe projection patterns, the system achieves measuring times of less than five seconds. To further reduce the time required for inspection, the generation of inverse fringe projection patterns has been implemented for the system. Inverse fringe projection speeds up the inspection process by employing object-adapted patterns, which enable the detection of geometry deviations in a single image. Two different approaches to generate object adapted patterns are presented. The first approach uses a reference measurement of a manufactured tool master to generate the inverse pattern. The second approach is based on a virtual master geometry in the form of a CAD file and a ray-tracing model of the measuring system. Virtual modeling of the measuring device and inspection setup allows for geometric tolerancing for free-form surfaces by the tool designer in the CAD-file. A new approach is presented, which uses virtual tolerance specifications and additional simulation steps to enable fast checking of metric tolerances. Following the description of the pattern generation process, the image processing steps required for inspection are demonstrated on captures of gearing geometries. © 2016 SPIE.
The Katowice problem and autohomeomorphisms of $ω^*$
Creators: name: Chodounsky, David
name: Dow, Alan
name: Hart, Klaas Pieter
name: de Vries, Harm
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Topology (math.GN)
subject: Logic (math.LO)
subject: FOS: Mathematics
subject: 54D40 (Primary), 03E05, 03E35, 06E05, 06E15, 54A35, 54D80 (Secondary)

description: We show that the existence of a homeomorphism between $ω_0^*$ and $ω_1^*$ entails the existence of a non-trivial autohomeomorphism of $ω_0^*$.
Development of an edge sensor based on polyview optics and laser triangulation principle
Creators: name: Li, Yinan
name: Bossmeyer, Hagen
name: Kästner, Markus
name: Reithmeier, Eduard
Publisher: name: Bellingham, Wash. : SPIE
Year: 2016
Subjects: subject: 3D measurement
subject: Optical systems for inspection and measurements
subject: System calibration
subject: Calibration
subject: Inspection
subject: Surveying
subject: Triangulation
subject: Units of measurement
subject: 3-D measurement
subject: Calibration process
subject: Edge measurement
subject: Laser triangulation principle
subject: Multi-sensor systems
subject: Multiple measurements
subject: Profile measurement
subject: Optical systems
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Common 2D laser line triangulation sensors allow a 2D profile measurement in a single line. To scan samples with great curved surfaces like edges, a single laser line triangulation sensor is insufficient. To measure the entire form of such an edge, it normally requires either multiple measurements of one single sensor or a multi sensor system. For this reason, we developed an edge measurement sensor based on an in-house designed polyview optics and the well-known laser triangulation principle. The new developed edge measurement sensor is capable of measuring the object over a 180 field of view (FOV). The configuration, the calibration process and the measurement results of this edge sensor will be discussed in this paper. © 2016 SPIE.
Isomorphism classes of finite dimensional connected Hopf algebras in positive characteristic
Creators: name: Wang, Xingting
Publisher: name: arXiv
Year: 2013
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 16T05

description: We classify all finite-dimensional connected Hopf algebras with large abelian primitive spaces. We show that they are Hopf algebra extensions of restricted enveloping algebras of certain restricted Lie algebras. For any abelian matched pair associated with these extensions, we construct a cohomology group, which classifies all the extensions up to equivalence. Moreover, we present a $1$-$1$ correspondence between the isomorphism classes and a group quotient of the cohomology group deleting some exceptional points, where the group respects the automorphisms of the abelian matched pair and the exceptional points represent those restricted Lie algebra extensions.
description: 27 pages, any comment is welcome
Photo-accelerated water dissociation across one-atom-thick electrodes
Creators: name: Cai, J.
name: Griffin, E.
name: Guarochico-Moreira, V.
name: Barry, D.
name: Xin, B.
name: Huang, S.
name: Geim, A. K.
name: Peeters, F. M.
name: Lozada-Hidalgo, M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Recent experiments demonstrated that interfacial water dissociation (H2O = H+ + OH-) could be accelerated exponentially by an electric field applied to graphene electrodes, a phenomenon related to the Wien effect. Here we report an order-of-magnitude acceleration of the interfacial water dissociation reaction under visible-light illumination. This process is accompanied by spatial separation of protons and hydroxide ions across one-atom-thick graphene and enhanced by strong interfacial electric fields. The found photo-effect is attributed to the combination of graphene's perfect selectivity with respect to protons, which prevents proton-hydroxide recombination, and to proton transport acceleration by the Wien effect, which occurs in synchrony with the water dissociation reaction. Our findings provide fundamental insights into ion dynamics near atomically-thin proton-selective interfaces and suggest that strong interfacial fields can enhance and tune very fast ionic processes, which is of relevance for applications in photo-catalysis and designing reconfigurable materials.
title: Verschiedenes
Creators: name: Redaktion, Die
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 1, Nr. 1 (1972), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Reading between Worlds: Contemporary Greek Women's Writing and Censorship
Creators: Van Dyck, Karen
Publisher: name: Columbia University
Year: 1994
Subjects: Women poets, Greek
Greek literature, Modern
Censorship
Literature and society
Gender identity in literature

description: In this article I link the strength of Greek women's writing in recent decades to the authors' willingness to connect censorship under an authoritarian regime and under patriarchy. I focus on the ways in which women poets continued to deploy certain writing strategies that, although initiated in response to the dictator's press law, proved useful in articulating domestic power struggles. Drawing on the formative experience of writing under censorship, these writers in the 1980s forged a poetics based on a female relation to language and the literary tradition. I begin by outlining the cultural conditions under the dictatorship--in particular, the colonels' fear of linguistic and sexual undecidability--and show that the figure of woman (such as Lysistrata or Cassandra), used to represent this undecidability, becomes an important site of resistance. I then chart the shift from the allegorical use of the subversive woman in comic strips and novels written in the early 1970s to the linguistic attention women's poetry of the 1980s gives to mechanisms of censorship. The displacement of attention from the public enemy to the enemy at home in recent poetry by women has also led to the implication of their own writing in the power dynamics they analyze. Recognizing, as Cavafy observes, that "the barbarians"--whether colonels or men in general--are "a kind of solution," this poetry appears to move beyond substituting one enemy for another and to do so by admitting its discursive complicity in the enemy's operations.
title: Rolf Dehn: Die Urnenfeldeikultur in Nordwürttemberg Band 1 der „Forschungen und Berichte zur Vor- und Frühgeschichte in Baden- Württemberg". Herausgegeben vom Landesdenkmalamt Baden-Württemberg. Verlag Müller & Gräff, Stuttgart. 1972
Creators: name: Reim, Hartmann
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 1, Nr. 1 (1972), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Characterization of porous surfaces with spatial point pattern analysis
Creators: name: Zou, Yibo
name: Kästner, Markus
name: Reithmeier, Eduard
Publisher: name: Bellingham, Wash. : SPIE
Year: 2015
Subjects: subject: Characterization
subject: Point pattern analysis
subject: Porous surfaces
subject: Ripley's K-Function
subject: Automotive industry
subject: Coatings
subject: Corrosion resistance
subject: Friction
subject: Monte Carlo methods
subject: Plasma spraying
subject: Wear resistance
subject: Functional correlation
subject: Nearest neighbor analysis
subject: Porous surface
subject: Ripley's K function
subject: Spatial point pattern analysis
subject: Two dimensional spaces
subject: Wear and corrosion resistance
subject: Spatial variables measurement
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Nowadays thermal plasma spray coating is widespread in automobile industry. For example, in the cylinder manufacturing process coatings are applied for friction reduction, wear and corrosion resistance. After the honing process, a coated surface exhibits porous microstructures, which are often characterized in order to understand functional correlations between key parameters of the pores and friction performance. In this paper, spatial point pattern analysis is used to investigate the pores' distribution in a two dimensional space. Methods, such as nearest neighbor analysis and Ripley's K-function, are used to conduct the experiments to analyze the observer's pattern. Different edge correction methods in Ripley's K-function are introduced. Confidence envelopes are simulated using the Monte Carlo method. Experimental results are presented to reveal the patterns of pores, where influences of the selected measurement area on the results are taken into account and further discussed. © 2015 SPIE.
title: Die baden-württembergischen Denkmalpfleger (2)
Creators: name: Redaktion, Die
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 1, Nr. 2 (1972), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
A Novel Spin-Light Polarimeter for the Electron Ion Collider
Creators: name: Mohanmurthy, Prajwal
Publisher: name: arXiv
Year: 2013
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: A novel precision polarimeter will go a long way in satisfying the requirements of the precision experiments being planned for a future facility such as the Electron Ion Collider. A polarimeter based on the asymmetry in the spacial distribution of the spin light component of synchrotron radiation will make for a fine addition to the existing-conventional Møller and Compton polarimeters. The spin light polarimeter consists of a set of wriggler magnet along the beam that generate synchrotron radiation. The spacial distribution of synchrotron radiation will be measured by an ionization chamber after being collimated. The up-down spacial asymmetry in the transverse plane is used to quantify the polarization of the beam. As a part of the design process, firstly, a rough calculation was drawn out to establish the validity of such an idea. Secondly, the fringe fields of the wriggler magnet was simulated using a 2-D magnetic field simulation toolkit called Poisson Superfish, which is maintained by Los Alamos National Laboratory. This was used to account for beam motion effects and the corresponding correlations were show to be negligible. Lastly, a full fledged GEANT-4 simulation was built to study the response time of the ionization chamber. This GEANT-4 simulation was analyzed for variety of effects that may hinder precision polarimetry. It was found that a Spin-Light Polarimeter would be a fine relative polarimeter.
description: Undergraduate Senior Thesis; 55 pages + code snippets, 40 figures
title: Die bauliche Sanierung des Blauen Turmes in Bad Wimpfen
Creators: name: Cichy, Bodo
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 1, Nr. 2 (1972), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Directed flow of $Λ$ from heavy-ion collisions and hyperon puzzle of neutron stars
Creators: name: Ohnishi, Akira
name: Jinno, Asanosuke
name: Murase, Koichi
name: Nara, Yasushi
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We examine the $Λ$ potential from the chiral effective field theory ($χ$EFT) via the $Λ$ directed flow from heavy-ion collisions. We implement the $Λ$ potential obtained from the $χ$EFT in a vector potential version of relativistic quantum molecular dynamics. We find that the $Λ$ potentials obtained from the $χ$EFT assuming weak momentum dependence reproduce the $Λ$ directed flow measured by the STAR collaboration in the Beam Energy Scan program. While the $Λ$ directed flow is not very sensitive to the density dependence of the potential, the directed flow at large rapidities is susceptible to the momentum dependence. Thus understanding the directed flow of hyperons in a wide range of beam energy and rapidity is helpful in understanding hyperon potentials in dense matter.
description: Talk given at HYP2022 (the 14th International Conference on Hypernuclear and Strange Particle Physics), June 27-July 1, 2022, Prague, Czech Republic. 6 pages, 2 figures
Touching Divinity: The Monastic Night in Anglo-Saxon England
Creators: name: Wilkinson, Harry E.
Publisher: name: University of Leicester
Year: 2023
Subjects: Uncategorized

description: The night is a fundamental part of human life and experience of the night within the Anglo-Saxon monastic context is underexplored. Scholarship on the night is fragmentary and the early medieval period has often been overlooked. Research focusing upon the early medieval monastic night is limited and does not conduct a detailed analysis of the primary evidence. Scholars have largely presented the medieval understanding of the night as monolithically negative, a time of danger and threat (both natural and supernatural). This thesis has examined references to, and descriptions of, the night in Anglo-Saxon England, with supporting evidence drawn from early medieval Francia. Particular focus was given to the writings of Bede due to the prominence of his teachings throughout the medieval period. Modern studies of sleeping patterns have been examined to contextualise the effects of early medieval nocturnal routine. This thesis has demonstrated that early medieval monastic understanding of the night’s origins in Christian creation, and how it physically functioned, informed their connecton between night and time. Performance of the Night Office was crucial to the lived experience of Anglo-Saxon monks and their monastic vocation, driving the need for accurate and reliable methods of nocturnal time-reckoning. The liminality of the night allowed greater interaction with the invisible spiritual world, and gave the Night Office its significance as it afforded an opportunity for closer connection with the divine. The early medieval monastic perception of the night was more complex and nuanced than has previously been assessed. Anglo-Saxon monks were able to understand the night as both a time of spiritual threat and an opportunity for divine connection.
The HI mass function of star-forming galaxies at $\mathbf{z \sim 0.35}$
Creators: name: Bera, Apurba
name: Kanekar, Nissim
name: Chengalur, Jayaram N.
name: Bagla, Jasjeet S.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The neutral atomic hydrogen (HI) mass function (HIMF) describes the distribution of the HI content of galaxies at any epoch; its evolution provides an important probe of models of galaxy formation and evolution. Here, we report Giant Metrewave Radio Telescope HI 21cm spectroscopy of blue star-forming galaxies at $z\approx0.20-0.42$ in the Extended Groth Strip, which has allowed us to determine the scaling relation between the average HI mass ($\rm{M_{HI}}$) and the absolute B-band magnitude ($\rm{M_B}$) of such galaxies at $z \approx 0.35$, by stacking the HI 21cm emission signals of galaxy subsamples in different $\rm{M_B}$ ranges. We combine this $\rm{M_{HI}-M_B}$ scaling relation (with a scatter assumed to be equal to that in the local Universe) with the known B-band luminosity function of star-forming galaxies at these redshifts to determine the HIMF at $z\approx0.35$. We show that the use of the correct scatter in the $\rm{M_{HI}-M_B}$ scaling relation is critical for an accurate estimate of the HIMF. We find that the HIMF has evolved significantly from $z\approx0.35$ to $z\approx0$, i.e. over the last four Gyr, especially at the high-mass end. High-mass galaxies, with $\rm{M_{HI}\gtrsim10^{10}\ M_\odot}$, are a factor of $\approx3.4$ less prevalent at $z\approx0.35$ than at $z \approx 0$. Conversely, there are more low-mass galaxies, with $\rm{M_{HI} \approx10^9\ {M}_\odot}$, at $z\approx0.35$ than in the local Universe. While our results may be affected by cosmic variance, we find that massive star-forming galaxies have acquired a significant amount of HI through merger events or accretion from the circumgalactic medium over the past four Gyr.
description: Accepted for publication in The Astrophysical Journal Letters
Development of a compact low coherence interferometer based on GPGPU for fast microscopic surface measurement on turbine blades
Creators: name: Li, Yinan
name: Kästner, Markus
name: Reithmeier, Eduard
Publisher: name: Bellingham, Wash. : SPIE
Year: 2015
Subjects: subject: CUDA
subject: Interferometer
subject: Low coherence interferometry
subject: Non-contact measurement system
subject: Algorithms
subject: Computer graphics
subject: Computer graphics equipment
subject: Interferometers
subject: Mathematical transformations
subject: Metadata
subject: Optical data processing
subject: Optical testing
subject: Optical variables measurement
subject: Program processors
subject: Surface measurement
subject: Turbine components
subject: Turbines
subject: Turbomachine blades
subject: Wave interference
subject: Compute Unified Device Architecture(CUDA)
subject: General purpose graphics processing unit (GPGPU)
subject: Low coherence interferometers
subject: Non-contact measurement systems
subject: Optical measurement systems
subject: Vertical scanning interferometries
subject: Interferometry
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Vertical scanning interferometry (VSI) techniques are widely used to profile microscopic surface structures of industrial products. This paper introduces a high-precision fast optical measurement system with an optimized small sensor head for the measurement of precision surfaces on a turbine blade or blisks (blade integrated discs). The non-contact measurement system is based on a low coherence interferometer (LCI), which is capable of fast profiling of 3D sample surface with a nanometer resolution and has a larger measurement range compared to conventional microscopes. This results in a large amount of sampled data and a high computational time for the evaluation of the data. For this reason, the used evaluation algorithm in this paper is accelerated by the Compute Unified Device Architecture (CUDA) technology, which allows parallel evaluation of the data stack on independent cores of a General Purpose Graphics Processing Unit (GPGPU). As a result, the GPU-based optimized algorithm is compared with the original CPU-based single-threaded algorithm to show the approximate 60x speedup of computing the Hilbert Transformation, which is used to find the depth position in the correlogram of each pixel of the sampled data. The main advantage of the GPU computing for the evaluation algorithm of the LCI is that it can reduce the time-consuming data evaluation process and further accelerates the whole measurement. © 2015 SPIE.
title: In Sachen Nachrichtenblatt
Creators: name: Cichy, Bodo
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 1, Nr. 3 (1972), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Geographies of School Pupils who Speak English as an Additional Language (EAL)
Creators: name: Bishop, Ellen
Publisher: name: University of Leicester
Year: 2023
Subjects: Uncategorized

description: This thesis examines the education of pupils who speak English as an additional language (EAL) and how languages and multilingualism are negotiated across and within school spaces. A lack of existing scholarship on language, and EAL more specifically, within geography presents a gap that this thesis intends to address. This thesis utilises data from ethnographic fieldwork in a secondary school in the English Midlands where I undertook the role of a Teaching Assistant (TA) one day a week for a year to become immersed in the everyday lives of EAL pupils and the staff who teach and support them. Ethnographic fieldwork was followed by 37 interviews with teachers and educators from different schools across the UK, providing wider context around the teaching and support provision for EAL pupils in schools with different demographics and practices. Through analysis of research data, I argue that the spatialities and geographies of schools impact the way that EAL pupils and their learning and emotional needs are positioned and provided for, and more broadly how languages and multilingualism are negotiated across school spaces. This research contributes a new empirical area to the geographies of education sub-discipline around EAL education. Theoretically, the spatial and scalar lens used within this investigation of EAL pupil education contributes an enhanced understanding of the impact of the spatialities and geographies of schools, whilst also contributing a more nuanced understanding of the reciprocal relationship between space and language. This thesis also contributes to the geographies of multiculturalism, where, in existing scholarship, there is minimal reference to language despite being an identity characteristic that contributes to ethnicity and culture, through placing language as central in shaping young peoples’ educational encounters.
Global-in-time Strichartz estimates on non-trapping asymptotically conic manifolds
Creators: name: Hassell, Andrew
name: Zhang, Junyong
Publisher: name: arXiv
Year: 2013
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35Q41, 58J40

description: We prove global-in-time Strichartz estimates without loss of derivatives for the solution of the Schroedinger equation on a class of non-trapping asymptotically conic manifolds. We obtain estimates for the full set of admissible indices, including the endpoint, in both the homogeneous and inhomogeneous cases. This result improves on the results in earlier papers of Hassell-Tao-Wunsch and Mizutani which were local in time.
description: 40 pages, 2 figures. We have added some additional explanation concerning results used from earlier papers, particularly those related to the Legendre structure of the spectral measure
title: Die Württembergische Landesstelle für Volkskunde in Stuttgart
Creators: name: Hampp, Irmgard
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 1, Nr. 3 (1972), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4