cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Additional file 1 of The dark side of text-matching software: worries and counterproductive behaviour among European upper secondary school and bachelor students
Creators: name: Goddiksen, Mads Paludan
name: Johansen, Mikkel Willum
name: Armond, Anna Catharina Vieira
name: Centa, Mateja
name: Clavien, Christine
name: Gefenas, Eugenijus
name: Kovács, Nóra
name: Merit, Marcus Tang
name: Olsson, I. Anna S.
name: Poškutė, Margarita
name: Santos, Júlio Borlido
name: Santos, Rita
name: Strahovnik, Vojko
name: Varga, Orsolya
name: Wall, P. J.
name: Sandøe, Peter
name: Lund, Thomas Bøker
Publisher: name: figshare
Year: 2024
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Science Policy

description: Supplementary Material 1
Terahertz Multilayer Thickness Measurements: Comparison of Optoelectronic Time and Frequency Domain Systems
Creators: name: Liebermeister, Lars
name: Nellen, Simon
name: Kohlhaas, Robert B.
name: Lauck, Sebastian
name: Deumer, Milan
name: Breuer, Steffen
name: Schell, Martin
name: Globisch, Björn
Publisher: name: Technische Universität Berlin
Year: 2021
Subjects: subject: 500 Naturwissenschaften und Mathematik::530 Physik::530 Physik
subject: electrical engineering
subject: electronics
subject: classical electrodynamics
subject: instrumentation
subject: microelectronics

description: We compare a state-of-the-art terahertz (THz) time domain spectroscopy (TDS) system and a novel optoelectronic frequency domain spectroscopy (FDS) system with respect to their performance in layer thickness measurements. We use equal sample sets, THz optics, and data evaluation methods for both spectrometers. On single-layer and multi-layer dielectric samples, we found a standard deviation of thickness measurements below 0.2 µm for TDS and below 0.5 µm for FDS. This factor of approx. two between the accuracy of both systems reproduces well for all samples. Although the TDS system achieves higher accuracy, FDS systems can be a competitive alternative for two reasons. First, the architecture of an FDS system is essentially simpler, and thus the price can be much lower compared to TDS. Second, an accuracy below 1 µm is sufficient for many real-world applications. Thus, this work may be a starting point for a comprehensive cross comparison of different terahertz systems developed for specific industrial applications.
Hajlasz Gradients Are Upper Gradients
Creators: name: Jiang, Renjin
name: Shanmugalingam, Nageswari
name: Yang, Dachun
name: Yuan, Wen
Publisher: name: arXiv
Year: 2013
Subjects: subject: Functional Analysis (math.FA)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: Primary 46E35, Secondary 30L99, 46E30

description: Let $(X, d, μ)$ be a metric measure space, with $μ$ a Borel regular measure. In this paper, we prove that, if $u\in L^1_{\mathop\mathrm{\,loc\,}}(X)$ and $g$ is a Hajłasz gradient of $u$, then there exists $\widetilde u$ such that $\widetilde u=u$ almost everywhere and $4g$ is a $p$-weak upper gradient of $\widetilde u$. This result avoids a priori assumption on the quasi-continuity of $u$ used in [Rev. Mat. Iberoamericana 16 (2000), 243-279]. As an application, an embedding of the Morrey-type function spaces based on Hajłasz-gradients into the corresponding function spaces based on upper gradients is obtained. We also introduce the notion of local Hajłasz gradient, and investigate the relations between local Hajłasz gradient and upper gradient.
description: 10 pages
Analytical determination of orbital elements using Fourier analysis. II. Gaia astrometry and its combination with radial velocities
Creators: name: Delisle, J. -B.
name: Ségransan, D.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The ESA global astrometry space mission Gaia has been monitoring the position of a billion stars since 2014. The analysis of such a massive dataset is challenging in terms of the data processing involved. In particular, the blind detection and characterization of single or multiple companions to stars (planets, brown dwarfs, or stars) using Gaia astrometry requires highly efficient algorithms. In this article, we present a set of analytical methods to detect and characterize companions in scanning space astrometric time series as well as via a combination of astrometric and radial velocity time series. We propose a general linear periodogram framework and we derive analytical formulas for the false alarm probability (FAP) of periodogram peaks. Once a significant peak has been identified, we provide analytical estimates of all the orbital elements of the companion based on the Fourier decomposition of the signal. The periodogram, FAP, and orbital elements estimates can be computed for the astrometric and radial velocity time series separately or in tandem. These methods are complementary with more accurate and more computationally intensive numerical algorithms (e.g., least-squares minimization, Markov chain Monte Carlo, genetic algorithms). In particular, our analytical approximations can be used as an initial condition to accelerate the convergence of numerical algorithms. Our formalism has been partially implemented in the Gaia exoplanet pipeline for the third Gaia data release. Since the Gaia astrometric time series are not yet publicly available, we illustrate our methods on the basis of Hipparcos data, together with on-ground CORALIE radial velocities, for three targets known to host a companion: HD 223636 (HIP 117622), HD 17289 (HIP 12726), and HD 3277 (HIP 2790).
description: Accepted in A&A
Integrating sense of place in planning and management of multifunctional river landscapes: experiences from five European case studies
Creators: name: Verbrugge, Laura
name: Buchecker, Matthias
name: Garcia, Xavier
name: Gottwald, Sarah
name: Müller, Stefanie
name: Præstholm, Søren
name: Stahl Olafsson, Anton
Publisher: name: Tokyo : Springer Japan
Year: 2019
Subjects: subject: Place attachment
subject: Place meanings
subject: PPGIS
subject: Public participation
subject: River restoration
subject: Social-ecological system
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::330 | Wirtschaft::333 | Boden- und Energiewirtschaft::333,7 | Natürliche Ressourcen, Energie und Umwelt
subject: Dewey Decimal Classification::600 | Technik::690 | Hausbau, Bauhandwerk

description: River landscapes are complex social-ecological systems with many benefits for people. A common challenge is to integrate social values in river planning and management. In particular, there is a paucity of research on the meaning and significance of place in river recreation and how people feel emotionally and spiritually connected to river landscapes. Based on five European case studies, this study compares different methods and approaches for mapping sense of place in river landscapes and subsequently addresses the question of how these studies can inform participatory processes. The case studies are set in diverse geographical, institutional and policy contexts, including the planning and evaluation of river restoration projects in Switzerland, Denmark, Germany and Spain and the monitoring of the effects of newly constructed river dams in the Netherlands. This comparative study is a first step in understanding the breadth of analytical and spatial approaches that can be used to assess sense of place in river landscapes and their implications for resilient river landscape planning and management.
A quad-channel 8GS/s 6-bit Successive Approximation Register Analog to Digital Converter
Creators: Goodarzy, Behdad
Publisher: name: University of Alberta Library
Year: 2023

To compete in the growing market of integrated circuit design, designers are required to ideally develop circuits which consume less power, occupy lower area, and have a better performance. Yet, the trade-offs between power, area, and performance set limits for the designers. As a result, extensive research has been done to explore possible architectural advancements or to optimize available architectures in order to improve the performance, power, and area (PPA) characteristics of the designs.

To keep up with the increasing need for higher bandwidths, optimization of wire-line transceivers has been the target in many researches. In conventional mixed-signal transceivers, most of the equalization techniques were applied to the signal in the analog domain. Moreover, scaling of the CMOS technologies has risen a need for more precise linearity requirements. Thus, ADC-based receivers, providing the chance to conduct equalization in digital domain while benefiting from other advantages of this domain, have become popular over the past years.

ADC-based receivers include a front-end, the power-hungry ADCs, and digital equalization circuitry. The front-end extends channel's bandwidth, compensates for the loss, and provides copies of the input signal for multiple ADCs - only in time-interleaved structures. Then, one or a set of power-hungry ADCs digitize the signal. In our work, the main focus was to reduce the power consumption of the ADCs and provides a higher bandwidth and linearity (performance), while keeping the area same as in previous designs.

We improved the structure and optimized the PPA of an ADC-based receiver. First, this work presents a novel multi-branch cascoded buffer. The results of our simulations showed a higher -3dB bandwidth and better linearity compared to conventional buffers. In addition, using this structure may lead to almost perfect compensation for gain mismatch. Although additional circuitry to compensate for the mismatch was not implemented in our work, our simulations have proven the idea. Secondly, the StrongArm-based comparator was optimized to achieve its maximum gain-speed product. Afterward, the condition to optimize the Gain*Speed/Power of the structure was obtained. The optimized comparator proved to be 58% faster and consumed less than 95% of the previous design's power while providing a higher gain. Thirdly, the structure of the digital control block was also technically optimized, operating with the same function, proving to be almost 25% faster and consuming less power.
Flexible Selection Field Generation using Iron Core Coil Arrays
Creators: name: Foerger, Fynn
name: Hackelberg, Niklas
name: Boberg, Marija
name: Scheel, Jan-Philipp
name: Thieben, Florian
name: Mirzojan, Liana
name: Mohn, Fabian
name: Möddel, Martin
name: Graeser, Matthias
name: Knopp, Tobias
Publisher: name: International Journal on Magnetic Particle Imaging IJMPI
Year: 2023

description: Many different concepts for selection-field generators have been introduced for Magnetic Particle Imaging so far. Inthis work, the field generation characteristics of an optimized iron core selection-field generator consisting of twocoil arrays with a total of 18 coils are presented. Due to the high number of degrees of freedom, a wide variety offield configurations are possible. The setup allows the generation of arbitrarily shaped fields, including the standardMagnetic Particle Imaging fields such as field-free points and field-free lines. In this work, field measurements arepresented and the current calculation method for generating a specific field configuration is discussed.
description: International Journal on Magnetic Particle Imaging IJMPI, Vol 9 No 1 Suppl 1 (2023)
Thermodynamic Properties of Methyl Diethanolamine
Creators: name: Neumann, Tobias
name: Baumhögger, Elmar
name: Span, Roland
name: Vrabec, Jadran
name: Thol, Monika
Publisher: name: Technische Universität Berlin
Year: 2021
Subjects: subject: 500 Naturwissenschaften und Mathematik::530 Physik::530 Physik
subject: density
subject: equation of state
subject: experimental measurements
subject: Helmholtz energy
subject: methyl diethanolamine
subject: speed of sound

description: The homogeneous density of the liquid phase is experimentally investigated for methyl diethanolamine. Data are obtained along five isotherms in a temperature range between 300 K and 360 K for pressures up to 95 MPa. Two different apparatuses are used to measure the speed of sound for the temperatures between 322 K and 450 K with a maximum pressure of 95 MPa. These measurements and literature data are used to develop a fundamental equation of state for methyl diethanolamine. The model is formulated in terms of the Helmholtz energy and allows for the calculation of all thermodynamic properties in gaseous, liquid, supercritical, and saturation states. The experimental data are represented within their uncertainties. The physical and extrapolation behavior is validated qualitatively to ensure reasonable calculations outside of the range of validity. Based on the experimental datasets, the equation of state is valid for temperatures from 250 K to 750 K and pressures up to 100 MPa.
Percolation on random triangulations and stable looptrees
Creators: name: Curien, Nicolas
name: Kortchemski, Igor
Publisher: name: arXiv
Year: 2013
Subjects: subject: Probability (math.PR)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We study site percolation on Angel & Schramm's uniform infinite planar triangulation. We compute several critical and near-critical exponents, and describe the scaling limit of the boundary of large percolation clusters in all regimes (subcritical, critical and supercritical). We prove in particular that the scaling limit of the boundary of large critical percolation clusters is the random stable looptree of index 3/2, which was introduced in a companion paper. We also give a conjecture linking looptrees of any index in (1,2) with scaling limits of cluster boundaries in random triangulations decorated with O(N) models.
description: 30 pages, 12 figures. Published version (Probab. Theory Related Fields)
An Electron-Scattering Time Delay in Black Hole Accretion Disks
Creators: name: Salvesen, Greg
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Universal to black hole X-ray binaries, the high-frequency soft lag gets longer during the hard-to-intermediate state transition, evolving from ${\lesssim}1~{\rm ms}$ to ${\sim}10~{\rm ms}$. The soft lag production mechanism is thermal disk reprocessing of non-thermal coronal irradiation. X-ray reverberation models account for the light-travel time delay external to the disk, but assume instantaneous reprocessing of the irradiation inside the electron scattering-dominated disk atmosphere. We model this neglected scattering time delay as a random walk within an $α$-disk atmosphere, with approximate opacities. To explain soft lag trends, we consider a limiting case of the scattering time delay that we dub the thermalization time delay, $t_{\rm th}$; this is the time for irradiation to scatter its way down to the effective photosphere, where it gets thermalized, and then scatter its way back out. We demonstrate that $t_{\rm th}$ plausibly evolves from being inconsequential for low mass accretion rates $\dot{m}$ characteristic of the hard state, to rivaling or exceeding the light-travel time delay for $\dot{m}$ characteristic of the intermediate state. However, our crude model confines $t_{\rm th}$ to a narrow annulus near peak accretion power dissipation, so cannot yet explain in detail the anomalously long-duration soft lags associated with larger disk radii. We call for time-dependent models with accurate opacities to assess the potential relevance of a scattering delay.
description: Published 2022 November 21, The Astrophysical Journal Letters, 940, L22, 8pp
A History of Vancouver Memorial Hospital (Originally Named Clark General Hospital): 1929 - 1970
Creators: name: Bliss, Paul S.
Publisher: name: Unknown
Year: 1970
Subjects: Power, J. B.
Hospital Administration
Health Care Facilities, Manpower, and Services
Financial Management, Hospital
Washington (State)--Vancouver

description: This text covers the first four decades, from 1929 to 1970, of the Vancouver Memorial Hospital, noting the significant innovations, especially since 1945, in hospital administration and practice. Drawing primarily from board meeting minutes, this material chronicles the changing leadership of board members, benefactors, and staffing, navigating conflict resolutions and growing pains of hospital expansion, as well as serving as a historical record for financial needs and adjustments during this time period.
Insights on local chemical structure of chalcogenide photovoltaic  materials using solid state NMR spectroscopy
Creators: Bhattacharya, Amit
Publisher: name: University of Alberta Library
Year: 2023

Quaternary chalcogenides with the formula I2-II-IV-VI4 have emerged as promising candidates for photovoltaic materials, but many details about their structures remain poorly understood. This thesis describes the synthesis, structure determination, and optical properties of the sulfides Cu2MTtS4 (M = Zn, Cd, Hg; Tt = Ge, Sn), prepared as bulk samples by reaction of the elements. Their long- and short-range structures were elucidated by a combination of powder X-ray diffraction and multinuclear solid-state magnetic resonance spectroscopy (63/65Cu, 67Zn, 73Ge,113Cd, 119Sn, 199Hg). Within the Cu2Zn1−xCdxSnS4 series, 113Cd NMR spectroscopy confirmed a phase transition at x = 0.4 and revealed the coexistence of phases with subtly different structures (space groups I4 ̅ and I4 ̅2m) in the intermediate region (x = 0.3–0.4), which were previously not apparent from XRD data alone. The 119Sn NMR spectra indicated the Sn atoms are surrounded by a random distribution of Zn and Cd atoms within the second coordination sphere; these distinct local environments were resolved by their isotropic chemical shifts and quantified by their peak areas. A longstanding problem about whether disorder of Cu and Zn atoms occurs in Cu2ZnSnS4 was resolved by analyzing high-field (21.1 T) 63/65Cu, 67Zn solid-state NMR spectra, in conjunction with DFT calculations. Similar problems plague the related compounds Cu2HgSnS4 and Cu2GeSnS4. Evidence from 119Sn and 199Hg NMR spectra suggests that ordering occurs in Cu2HgSnS4 after annealing, a phenomenon that was not previously detected from XRD data. Within the Cu2ZnSn1−xGexS4 series, the influence of Ge substitution for Sn on the local structure was monitored by 67Zn solid-state MAS NMR spectroscopy, which showed excellent sensitivity. For all these compounds, optical band gaps were determined experimentally from UV-visible diffuse reflectance spectra.  Electronic structure calculations were performed to bear further insight into the bonding and charge distribution in these compounds.
Reframing urban “wildlife” to promote inclusive conservation science and practice
Creators: name: Egerer, Monika
name: Buchholz, Sascha
Publisher: name: Technische Universität Berlin
Year: 2021
Subjects: subject: 500 Naturwissenschaften und Mathematik::570 Biowissenschaften; Biologie::577 Ökologie
subject: conservation
subject: ecology
subject: human-wildlife interactions
subject: urban
subject: wildlife

description: Cities are home to both a majority of the world’s human population, and to a diversity of wildlife. Urban wildlife conservation research and policy has importantly furthered ecological understanding and species protection in cities, while also leveraging wildlife conservation to connect people to urban nature. Thus, urban wildlife conservation intersects conservation research, conservation policy, and the general public in cities worldwide. Yet, species that are often framed as “urban wildlife” are often of higher trophic levels, including birds and mammals that serve as “flagship” species for public support. Other forms of urban life including plants and invertebrates are often largely ignored, producing a normative urban wildlife concept that may bias urban wildlife conservation research and policy, and sentiment in the general public. To develop new strategies in urban wildlife conservation for the urban era, we need to move towards a more inclusive and holistic framing of urban wildlife for both research and the public. In this article, we discuss the normative framing of urban wildlife and how this framing may bias urban conservation efforts, and argue for a holistic approach to urban wildlife inclusive of all life forms for future research, publicity and policy interventions.
Toward a Badiou-Inspired Eventful English Language Arts Curriculum: A Refractive Autoethnography
Creators: Piazza, Robert
Publisher: name: University of Alberta Library
Year: 2023

The purpose of my autoethnographic study is to understand more fully how my experience of educational events and their emerging truths impact my identity and my curricular and pedagogical approaches as a seasoned English Language Arts teacher. My dissertation addresses the following research questions:

• In what ways does my experience of “educational events” impact my English Language Arts teacher identity, curriculum, and pedagogy?

• What implications do my experiences of teaching eventfully have for English Language Arts teaching practice and curriculum in neoliberal times?

In order to address these questions, I consider French philosopher Alain Badiou’s theorization of the “Event.” I articulate what I call a refractively eventful encounter as a contribution living within the traditions of Badiou’s event theory, curriculum studies, and English Language Arts curriculum. Specifically, I refractively interpret stories, memories, and artifacts from my experiences of taking four doctoral courses, in addition to my teaching of two novels, Daniel Quinn’s Ishmael and Janne Teller’s Nothing, in an urban high school in Alberta. My autoethnographic interpretation of these experiences helps me articulate the ways in which neoliberal culture deeply inscribes itself into my being and how I attempt to resist such commitments. I explore the possibility of inviting students and teachers to re-cognize, or come to know again, commitments of their own. In my findings and conclusion chapters, I discuss key implications of eventful teaching in neoliberal times, namely: what it means to be a humilitant critical pedagogue and the implications of refraction for curriculum, pedagogy, and autoethnography.
title: Inhalt
Creators: name: Redaktion, Die
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 2, Nr. 1 (1959): Nachrichtenblatt der Denkmalpflege in Baden-Württemberg – Organ der Staatlichen Ämter für Denkmalpflege, Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Pure Exploration in Multi-Armed Bandits
Creators: Stephens, Connor J
Publisher: name: University of Alberta Library
Year: 2023

Many practical problems in fields ranging from online advertising to genomics can be framed as the task of selecting the best option from among several choices, based on a limited number of noisy evaluations of the quality of each choice. Pure exploration in multi-armed bandits is an online-learning setting which aims to capture the challenge of designing adaptive data collection and terminal selection procedures that optimize the quality of their final recommendation. In this thesis we provide a comprehensive overview of the sample complexities, as well as algorithms that achieve them, for several core pure exploration settings. We cover problems in both the fixed confidence and fixed budget frameworks and provide a number of novel contributions, including a new analysis of a well-known algorithm, Sequential Halving. This result reveals new performance guarantees and contributes to a greater understanding of the sample complexity of making close to optimal selections in the fixed budget setting, a highly practical problem setup which has remained largely overlooked in the literature until recently.
The tautological ring of the space of pointed genus two curves of compact type
Creators: name: Petersen, Dan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: We prove that the tautological ring of $M_{2,n}^{ct}$, the moduli space of n-pointed genus two curves of compact type, does not have Poincaré duality for any $n \geq 8$. This result is obtained via a more general study of the cohomology groups of $M_{2,n}^{ct}$. We explain how the cohomology can be decomposed into pieces corresponding to different local systems and how the tautological cohomology can be identified within this decomposition. Our results allow the computation of $H^k(M_{2,n}^{ct})$ for any $k$ and $n$ considered both as $S_n$-representation and as mixed Hodge structure/$\ell$-adic Galois representation considered up to semi-simplification. A consequence of our results is also that all even cohomology of $\overline M_{2,n}$ is tautological for $n < 20$, and that the tautological ring of $\overline M_{2,n}$ fails to have Poincaré duality for all $n \geq 20$. This improves and simplifies results of the author and Orsola Tommasi.
description: 23 pages. Major revision, includes new results on moduli of stable genus two curves and a proof of a conjecture left open in the author's paper with Orsola Tommasi. Paper is reorganized, some proofs simplified
title: Zu den Plänen der Stadtverwaltung der Universitätsstadt Tübingen wegen Verbesserung der Verkehrsverhältnisse in der Innenstadt
Creators: name: Heck, Oscar
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 2, Nr. 3 (1959): Nachrichtenblatt der Denkmalpflege in Baden-Württemberg – Organ der Staatlichen Ämter für Denkmalpflege, Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Evaluation of deep crustal earthquakes in northern Germany – Possible tectonic causes
Creators: name: Brandes, Christian
name: Plenefisch, Thomas
name: Tanner, David C.
name: Gestermann, Nicolai
name: Steffen, Holger
Publisher: name: Oxford [u.a.] : Wiley-Blackwell
Year: 2019
Subjects: subject: Germany
subject: crustal structure
subject: earthquake
subject: earthquake hypocenter
subject: fault zone
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: We present new evidence for seven deep crustal, intraplate earthquakes in northern Germany, a region regarded as an area of low seismicity. From 2000 to 2018, seven earthquakes with magnitudes of ML 1.3–3.1, were detected at depths of 17.0–31.4 km. By placing the earthquake hypocentres in a geological three-dimensional model, we can correlate two of the earthquakes with the Thor Suture, a major fault zone in this area. Five of the earthquakes group in the lower crust near the Moho, which implies that parts of the lower crust and the crust/mantle boundary in northern Germany act as a structural discontinuity on which deformation localizes. Numerical simulation implies that stress changes due to glacial isostatic adjustment most likely triggered these deep crustal earthquakes.
title: Die „Hostienmühlen" in Loffenau (Kr. Calw) und Malmsheim (Kr. Leonberg)
Creators: name: Heye, Eva
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 5, Nr. 3 (1962): Nachrichtenblatt der Denkmalpflege in Baden-Württemberg – Organ der Staatlichen Ämter für Denkmalpflege, Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Statistical analysis of the Si I 6560.58 Å line observed by CHASE
Creators: name: Hong, Jie
name: Qiu, Ye
name: Hao, Qi
name: Xu, Zhi
name: Li, Chuan
name: Ding, Mingde
name: Fang, Cheng
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The Si I 6560.58 Å line in the H$α$ blue wing is blended with a telluric absorption line from water vapor in ground-based observations. Recent observations with the space-based telescope CHASE provide a new window to study this line. We aim to study the Si I line statistically and to explore possible diagnostics. We select three scannings in the CHASE observations, and measure the equivalent width (EW) and the full width at half maximum (FWHM) for each pixel on the solar disk. We then calculate the theoretical EW and FWHM from the VALC model. An active region is also studied in particular for difference in the quiet Sun and the sunspots. The Si I line is formed at the bottom of the photosphere. The EW of this line increases from the disk center to $μ$ = 0.2, and then decreases toward the solar limb, while the FWHM shows a monotonically increasing trend. Theoretically predicted EW agrees well with observations, while the predicted FWHM is far smaller due to the absence of unresolved turbulence in models. The macroturbulent velocity is estimated to be 2.80 km s$^{-1}$ at the disk center, and increases to 3.52 km s$^{-1}$ at $μ$ = 0.2. We do not find any response to flare heating in current observations. Doppler shifts and line widths of the Si I 6560.58 Å and Fe I 6569.21 Å lines can be used to study the mass flows and turbulence of the different photospheric layers. The Si I line has good potentials to diagnose the dynamics and energy transport in the photosphere.
description: 7 pages, 10 figures, 2 tables. Accepted for publication in A&A. CHASE data are available at https://ssdc.nju.edu.cn
Highly flexible gradiometer coil arrangement offering improved passive compensation for multi-frequency MPI
Creators: name: Radermacher, Harald
name: Schrank, Franziska
name: Pantke, Dennis
name: Mueller, Florian
name: Peters, Maximilian
name: Schulz, Volkmar
Publisher: name: International Journal on Magnetic Particle Imaging IJMPI
Year: 2023

description: In Magnetic Particle Imaging (MPI), the acquired receive signal will contain both the superparamagnetic iron oxide nanoparticle (SPION) signal as well as the excitation signal, where the former is to be maximized while the latter is to be reduced. Gradiometer receive coils can offer such reduction. Effective suppression of excitation feedthrough requires various degrees of freedom (DOF) for adjusting geometrical positions, amplitudes, etc. In this work, a suitable MPI coil arrangement is presented. The adjustment process is based on the signals acquired by the receive chain and can be fully automated. The coil arrangement is realized as a scanner with a diameter of approximately 34 mm; one dimension is scanned electrically while full three dimensional scanning can be achieved via the mechanical DOFs by means of a robotic stage. Electrical characterization shows passive feedthrough suppression of more than 100 dB. First measurements of SPION samples are presented, showing improved signal.
description: International Journal on Magnetic Particle Imaging IJMPI, Vol 9 No 1 Suppl 1 (2023)
Can travel time variability be ignored when solving the transit network design problem?
Creators: name: Haas, Inbal
name: Friedrich, Bernhard
Publisher: name: Amsterdam [u.a.] : Elsevier
Year: 2019
Subjects: subject: Genetic Algorithm
subject: Traffic assignment
subject: Transit Network Design
subject: Konferenzschrift
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::380 | Handel, Kommunikation, Verkehr

description: [no abstract available]
title: Max Schefold: Alte Ansichten aus Baden [...] Anton H. Konrad Verlag, Weißenhorn b. Ulm. 1971 ; Quellennachweis für die Abbildungen
Creators: name: Niester, Heinrich
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
Sample preparations for reproducible measurements in MPS and MPI
Creators: name: Kreft, Pauline
name: Schrank, Franziska
name: Pantke, Dennis
name: Schulz, Volkmar
Publisher: name: International Journal on Magnetic Particle Imaging IJMPI
Year: 2023

description: MPI is a promising new technology for highly sensitive medical imaging. To acquire reproducible measurements, stable scanner and sample preparations are needed for both system matrix (SM) acquisition and measurement. Therefore, it is important to analyze and subsequently minimize the influence of the scanner hardware, as well as of the preparation method. In this work, we studied the evolution of the MPI signal of particle samples using five sealing methods (tape, hot glue, silicone, silicone + tape, UV glue) in combination with two different tracers (perimag® and SHP20). In a background examination, we obtained high variations in the signal of the empty scanner over time. For the sample preparation series, we saw that for each type of tracer a different sealing method worked best. Our results offer insight to sample behavior, which is important for stable SM measurements as well as the differentiation of other factors influencing a sample measurement.
description: International Journal on Magnetic Particle Imaging IJMPI, Vol 9 No 1 Suppl 1 (2023)
title: 800 Jähre Stadt Isny
Creators: name: Krins, Hubert
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
title: Ergebnisse einer Sondierungsgtabung in der Klosterkirche Schuttern bei Lahr
Creators: name: List, Karl
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
An analogue of the Robinson-Schensted-Knuth correspondence and non-symmetric Cauchy kernels for truncated staircases
Creators: name: Azenhas, Olga
name: Emami, Aram
Publisher: name: arXiv
Year: 2013
Subjects: subject: Combinatorics (math.CO)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 05E05 (Primary), 05E10, 17B37 (Secondary)

description: We prove a restriction of an analogue of the Robinson--Schensted--Knuth correspondence for semi-skyline augmented fillings, due to Mason, to multisets of cells of a staircase possibly truncated by a smaller staircase at the upper left end corner, or at the bottom right end corner. The restriction to be imposed on the pairs of semi-skyline augmented fillings is that the pair of shapes, rearrangements of each other, satisfies an inequality in the Bruhat order, w.r.t. the symmetric group, where one shape is bounded by the reverse of the other. For semi-standard Young tableaux the inequality means that the pair of their right keys is such that one key is bounded by the Schützenberger evacuation of the other. This bijection is then used to obtain %recover an expansion formula of the non-symmetric Cauchy kernel, over staircases or truncated staircases, in the basis of Demazure characters of type $A$, and the basis of Demazure atoms. The expansion implies Lascoux expansion formula, when specialised to staircases or truncated staircases, and make explicit, in the latter, the Young tableaux in the Demazure crystal by interpreting Demazure operators via elementary bubble sorting operators acting on weak compositions.
description: final version, to appear in European J. Combin., Introduction changed; last section reorganised, typos corrected, affiliation added, 40 pages
Study of the influence of protuberances in the trailing edge of airfoils and determination of their aerodynamic efficiency through CFD using Ansys Fluent
Estudio de la influencia de protuberancias en el borde de ataque de perfiles alares y determinación de su eficiencia aerodinámica mediante CFD en Ansys Fluent
Creators: name: González, Angel
name: Hinojosa, Jorge
Publisher: name: Barcelona : Scipedia
Year: 2019
Subjects: subject: Airfoil
subject: lift
subject: CFD
subject: protuberances
subject: Perfil aerodinámico
subject: sustentación
subject: protuberancias
subject: Dewey Decimal Classification::500 | Naturwissenschaften::510 | Mathematik
subject: Dewey Decimal Classification::600 | Technik

description: In the present research, the effect of incorporating protuberances in the leading edge to the aerofoil NACA-0012 was studied. For the simulations, two profiles were designed: parametric profile (NACA 0012) and modified profile (0012-MOD), with help of CAD Program Inventor Professional 2016. The 0012-MOD profile incorporates modifications in the leading edge, whose inspiration comes from malformations present on the flippers of the humpback whale (Megaptera novaeangliae). The computational simulations were performed in Ansys Fluent, using the turbulent viscosity model k-ε realizable, with SIMPLE calculation algorithm. The study fluid is air in the incompressible range with Ma: 0.11. To obtain the lift and drag curves for both profiles, they were simulated for angles of attack α: between 0° and 40°, this way it will be possible to compare the profiles and determine their aerodynamic behaviour.
description: En la presente investigación se estudió el efecto de incorporar protuberancias en el borde de ataque al perfil aerodinámico NACA-0012. Para las simulaciones se diseñaron dos perfiles: perfil paramétrico (NACA 0012) y perfil modificado (0012-MOD), con ayuda del programa CAD Inventor Professional 2016. El perfil 0012-MOD incorpora modificaciones en el borde de ataque, cuya inspiración proviene de las malformaciones presentes en las aletas de la ballena jorobada (Megaptera novaeangliae). Las simulaciones computacionales se realizaron con el software comercial Ansys Fluent®, utilizando el modelo de viscosidad turbulenta k-ε realizable, con algoritmo de cálculo SIMPLE. El fluido de estudio es aire en el rango incompresible con Ma: 0,29. Con el objeto de obtener las curvas de sustentación y arrastre para ambos perfiles, se realizaron simulaciones para ángulos de ataque α entre los 0° y los 40°, de esta forma será posible comparar los perfiles y determinar su comportamiento aerodinámico.
title: Die baden-württembergischen Denkmalpfleger (4)
Creators: name: Niester, Heinrich
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 1, Nr. 4 (1972), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Thermodynamic modeling for numerical simulations based on the generalized cubic equation of state
Creators: name: Trummler, Theresa
name: Glatzle, Martin
name: Doehring, Alexander
name: Urban, Noah
name: Klein, Markus
Publisher: name: arXiv
Year: 2022
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We further elaborate on the generalized formulation for cubic equation of state proposed by Cismondi and Mollerup [Fluid Phase Equilib. 232 (2005)]. With this formulation all well-known cubic equations of state can be described with a certain pair of values, which allows for a generic implementation of different equations of state. Based on this generalized formulation, we derive a complete thermodynamic model for computational fluid dynamics (CFD) simulations by providing the resulting correlations for all required thermodynamic properties. For the transport properties, we employ the Chung correlations. Our generic implementation includes the often used equations of state Soave-Redlich-Kwong and Peng-Robinson and the Redlich-Kwong-Peng-Robinson (RKPR) equation of state. The first two assume a universal compressibility factor and are therefore only suitable for fluids with a matching critical compressibility. The Redlich-Kwong-Peng-Robinson overcomes this limitation by considering the equation of state parameter as function of the critical compressibility. We compare the resulting thermodynamic modeling for the three equations of state for selected fluids with each other and CoolProp reference data. As supplementary material to this paper, we provide a Python tool called real gas thermodynamic python library (realtpl). This tool can be used to evaluate and compare the results for a wide range of different fluids. Additionally, we also provide the implementation of the generalized form in OpenFOAM.
Lumped Parameter Modeling of a Quantum Optics Circuit and Decisive Test for Time-Symmetric Physics
Creators: name: Werbos, Paul J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: This paper showed how a simple lumped parameter model of a circuit can yield correct quantum mechanical predictions of its behavior, even when there is quantum entanglement between components of that circuit. It addresses an important example, the circuit of the original Bell's Theorem experiments for ideal polarizers. Correct predictions emerge from two alternative simple but time-symmetric models based on classical Markov Random Field across space time. Exact agreement here does not violate Bell's Theorem itself, because the interplay between initial and final outcomes in these calculations does not fall within the CHSH definition of time forwards causality. Both models raise interesting questions for future research. The final section discusses several possible directions for following up on these results, both in lumped system modeling and in more general approaches. The final section proposed a new experiment with three-photon entanglement which could tell us which is true, local realistic MRF models and time-symmetric physics, or conventional predictions assuming the usual collapse of the wave function. The appendix worked out what the conventional predictions would be for the proposed experiment, and also gives a simple master equation version of the collapse assumption which does not involve metaphysical observers. Section A.4 gives the prediction for the new models.
description: 14ps, 3 figs, 56 eqs, 22 refs. Revision 5 added a new final section, proposing a new experiment to decide between local realistic MRF models and conventional quantum mechanics, and a new appendix. v6 gives the correct prediction for time-symmetric physics for the all-angles triphoton experiment, cites a more detailed derivation, and summarizes how to modify QED to accommodate time-symmetry
Single-sided magnetic particle imaging devices using ferrite core to improve penetration depth
Creators: name: Wang, Qibin
name: Zhang, Zhonghao
name: Xu, Chenxiao
name: Guo, Pengyue
name: Liao, Yidong
name: He, Ning
name: Gao, Yunpeng
name: Li, Lei
name: Zhu, Shouping
Publisher: name: International Journal on Magnetic Particle Imaging IJMPI
Year: 2023

description: Single-sided MPI devices provide an object unrestricted to the scanned area, but the inadequate penetration depth limits the application scenarios of single-sided MPI devices. In order to solve this problem, we propose adding a ferrite core to the coil to enhance the magnetic flux density. To improve the performance of the receiver coil, we use a spiral receiving coil to improve the sensitivity of the system. In addition, this work uses the Halbach array permanent magnets with adjustable magnetic block angle to generate a variable gradient magnetic field and move the FFP position. The single-sided MPI system we designed in this work is a portable device, which is expected to achieve more accurate detection of tumor location and minimal removal of normal cells during breast-conserving surgery. The feasibility of the device proposed in this work is verified through the analysis of simulation and measurement results.
description: International Journal on Magnetic Particle Imaging IJMPI, Vol 9 No 1 Suppl 1 (2023)
Design Automation Case Study : Modular Locating Fixture
Creators: name: Gembarski, Paul Christoph
Publisher: name: Novi Sad : University of Novi Sad - Faculty of Technical Sciences
Year: 2022
Subjects: subject: Knowledge-Based Engineering
subject: Product Configuration
subject: Constraint Satisfaction Problems
subject: Computer Aided Design
subject: Solution Space Modeling
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Design automation systems often mimic human designers and implement routine design activities. Beside this, the idea of such knowledge-based engineering is to support developers in the analysis and syntheses of complex engineering artifacts. An instance of this is product configuration. A central aspect of knowledge-based engineering is its ability to draw conclusions about the design context. For this inference, different reasoning techniques have been proposed. One uses constraint satisfaction problems as model-based approach. In the present contribution, the authors report about a case-study about the implementation of a constraint-based configuration system with onboard resources of a computer aided design system on the example of a locating fixture.
title: Development of a novel sensor based on platinum interdigitated array electrodes for the detection of glucose
Creators: name: Leitner, Franziska
Publisher: name: FH Vorarlberg (Fachhochschule Vorarlberg)
Year: 2022
Subjects: subject: 600 Technik, Medizin, angewandte Wissenschaften

description: The detection of glucose is an essential part of diabetes management and can help to prevent secondary diseases, that can occur as a result of diabetes. For this reason, it is important to improve the current glucose monitoring by developing novel sensors with high efficiency, low cost and compact design. The use of microelectrodes with interdigitated array (IDA) structures reduces the total detector size while providing benefits such as large currents, high sensitivity, and fast response. The aim of this thesis is to develop a novel sensor based on platinum interdigitated array (IDA) electrodes and to investigate which method is most effective for the detection of glucose. This work is divided into two parts. The first part is focused on the design and the fabrication of the sensor chips. The second part is concerned with the electrochemical characterisation of the sensors. Two distinct sensor designs are created, each consisting of a four-electrode system arranged as an interdigitated array. For the fabrication of the sensors, two different manufacturing processes are used. A lift-off process is used to fabricate the 2 μm-Gap sensor chips, whereas a lift-off free process is applied to produce the nanogap sensor chips. The electrochemical characterisation of both sensor chips is achieved by the immobilisation of the enzyme glucose oxidase (GOx) on the electrode surface. This thesis investigates the immobilisation of GOx by reduction of diazonium salts and the direct immobilisation of GOx by cyclic voltammetry. As a result of this work, it has been demonstrated that glucose detection by reduction of diazonium salts is error-prone due to modification with a multi-step procedure and is not suitable for our sensors based on platinum IDA electrodes. The direct immobilisation of GOx by cyclic voltammetry, by contrast, demonstrates the successful detection of glucose. In glucose solutions ranging from 5 mM to 20 mM, a direct correlation between the glucose concentration and the measured current is obtained. The reproducibility of direct immobilization is demonstrated by repeated performance with various sensors.