cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Combining Clickstream Analyses and Graph-Modeled Data Clustering for Identifying Common Response Processes
Creators: name: Ulitzsch, Esther
name: He, Qiwei
name: Ulitzsch, Vincent
name: Molter, Hendrik
name: Nichterlein, André
name: Niedermeier, Rolf
name: Pohl, Steffi
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: action sequences
subject: response times
subject: complex problem solving
subject: cluster editing
subject: 100 Philosophie und Psychologie::150 Psychologie::150 Psychologie

description: Complex interactive test items are becoming more widely used in assessments. Being computer-administered, assessments using interactive items allow logging time-stamped action sequences. These sequences pose a rich source of information that may facilitate investigating how examinees approach an item and arrive at their given response. There is a rich body of research leveraging action sequence data for investigating examinees' behavior. However, the associated timing data have been considered mainly on the item-level, if at all. Considering timing data on the action-level in addition to action sequences, however, has vast potential to support a more fine-grained assessment of examinees' behavior. We provide an approach that jointly considers action sequences and action-level times for identifying common response processes. In doing so, we integrate tools from clickstream analyses and graph-modeled data clustering with psychometrics. In our approach, we (a) provide similarity measures that are based on both actions and the associated action-level timing data and (b) subsequently employ cluster edge deletion for identifying homogeneous, interpretable, well-separated groups of action patterns, each describing a common response process. Guidelines on how to apply the approach are provided. The approach and its utility are illustrated on a complex problem-solving item from PIAAC 2012.
Click-correlative light and electron microscopy (click-AT-CLEM) for imaging and tracking azido-functionalized sphingolipids in bacteria
Creators: name: Peters, Simon
name: Kaiser, Lena
name: Fink, Julian
name: Schumacher, Fabian
name: Perschin, Veronika
name: Schlegel, Jan
name: Sauer, Markus
name: Stigloher, Christian
name: Kleuser, Burkhard
name: Seibel, Jürgen
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: Antimicrobials
subject: Biological techniques
subject: Imaging
subject: Microbiology
subject: FOS: Biological sciences
subject: Microbiology techniques
subject: Microscopy
subject: 500 Naturwissenschaften und Mathematik::570 Biowissenschaften; Biologie::570 Biowissenschaften; Biologie

description: Sphingolipids, including ceramides, are a diverse group of structurally related lipids composed of a sphingoid base backbone coupled to a fatty acid side chain and modified terminal hydroxyl group. Recently, it has been shown that sphingolipids show antimicrobial activity against a broad range of pathogenic microorganisms. The antimicrobial mechanism, however, remains so far elusive. Here, we introduce 'click-AT-CLEM', a labeling technique for correlated light and electron microscopy (CLEM) based on the super-resolution array tomography (srAT) approach and bio-orthogonal click chemistry for imaging of azido-tagged sphingolipids to directly visualize their interaction with the model Gram-negative bacterium Neisseria meningitidis at subcellular level. We observed ultrastructural damage of bacteria and disruption of the bacterial outer membrane induced by two azido-modified sphingolipids by scanning electron microscopy and transmission electron microscopy. Click-AT-CLEM imaging and mass spectrometry clearly revealed efficient incorporation of azido-tagged sphingolipids into the outer membrane of Gram-negative bacteria as underlying cause of their antimicrobial activity.
Quantum-memory-assisted entropic uncertainty relation with a single nitrogen-vacancy center in diamond
Creators: name: Xu, Z. Y.
name: Zhu, S. Q.
name: Yang, W. L.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The limitation of simultaneous measurements of noncommuting observables can be eliminated when the measured particle is maximally entangled with a quantum memory. We present a proposal for testing this quantum-memory-assisted entropic uncertainty relation in a single nitrogen-vacancy (N-V) center in diamond only by local electronic measurements. As an application, this entropic uncertainty relation is used to witness entanglement between the electron and nuclear spins of the N-V center, which is close to the reach of currently available technology.
description: 3 pages, 3 figures, published version
Dipyrrinato‐Iridium(III) Complexes for Application in Photodynamic Therapy and Antimicrobial Photodynamic Inactivation
Creators: name: Hohlfeld, Benjamin F.
name: Gitter, Burkhard
name: Kingsbury, Christopher J.
name: Flanagan, Keith J.
name: Steen, Dorika
name: Wieland, Gerhard D.
name: Kulak, Nora
name: Senge, Mathias O.
name: Wiehe, Arno
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: (dipyrrinato)iridium(III) complexes
subject: antimicrobial photodynamic inactivation
subject: dipyrrins
subject: glycosylation
subject: photodynamic therapy
subject: 500 Naturwissenschaften und Mathematik::540 Chemie::540 Chemie und zugeordnete Wissenschaften

description: The generation of bio-targetable photosensitizers is of utmost importance to the emerging field of photodynamic therapy and antimicrobial (photo-)therapy. A synthetic strategy is presented in which chelating dipyrrin moieties are used to enhance the known photoactivity of iridium(III) metal complexes. Formed complexes can thus be functionalized in a facile manner with a range of targeting groups at their chemically active reaction sites. Dipyrrins with N- and O-substituents afforded (dipy)iridium(III) complexes via complexation with the respective Cp*-iridium(III) and ppy-iridium(III) precursors (dipy=dipyrrinato, Cp*=pentamethyl-eta(5)-cyclopentadienyl, ppy=2-phenylpyridyl). Similarly, electron-deficient [Ir-III(dipy)(ppy)(2)] complexes could be used for post-functionalization, forming alkenyl, alkynyl and glyco-appended iridium(III) complexes. The phototoxic activity of these complexes has been assessed in cellular and bacterial assays with and without light; the [Ir-III(Cl)(Cp*)(dipy)] complexes and the glyco-substituted iridium(III) complexes showing particular promise as photomedicine candidates. Representative crystal structures of the complexes are also presented.
Assessment of the Effectiveness of Pre-harvest Meat Safety Interventions to Control Foodborne Pathogens in Broilers: a Systematic Review
Creators: name: Pessoa, Joana
name: Rodrigues Da Costa, Maria
name: Nesbakken, Truls
name: Meemken, Diana
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: Campylobacter
subject: Farm practices
subject: Poultry
subject: Salmonella
subject: Zoonoses
subject: 500 Naturwissenschaften und Mathematik::570 Biowissenschaften; Biologie::570 Biowissenschaften; Biologie

description: Purpose of Review Ensuring broilers' meat safety is a priority to policy makers, producers, and consumers. This systematic review aims to update the recent knowledge on pre-harvest interventions to control main foodborne pathogens in broilers and to assess their effectiveness. Recent Findings A total of 815 studies were retrieved from PubMed (R) and Web of Science for 13 pathogens. In total, 51 studies regarding Campylobacter spp., Salmonella spp., VTEC, ESBL-AmpC Escherichia coli, and Clostridium perfringens were included in this review. Summary Research mostly focused on Salmonella spp. and Campylobacter spp. Biosecurity and management interventions had mixed outcomes, while the effectiveness of feed additives, though intensively researched, remains controversial. Research on other pathogens (i.e. ESBL-AmpC E. coli/Salmonella, and Toxoplasma gondii) was scarce, with publications focusing on epidemiology and/or on source-attribution studies. This is also true regarding research on Listeria monocytogenes, Bacillus cereus, Clostridium botulinum, Clostridium perfringens, and Staphylococcus aureus as these are frequently controlled by post-harvest interventions. Overall, studies on recent developments of novel pathogen-specific immunisation strategies are lacking.
Generalized Universality for TMD Distribution Functions
Creators: name: Buffing, M. G. A.
name: Mulders, P. J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Azimuthal asymmetries in high-energy processes, most pronounced showing up in combination with single or double (transverse) spin asymmetries, can be understood with the help of transverse momentum dependent (TMD) parton distribution and fragmentation functions. These appear in correlators containing expectation values of quark and gluon operators. TMDs allow access to new operators as compared to collinear (transverse momentum integrated) correlators. These operators include nontrivial process dependent Wilson lines breaking universality for TMDs. Making an angular decomposition in the azimuthal angle, we define a set of universal TMDs of definite rank, which appear with process dependent gluonic pole factors in a way similar to the sign of T-odd parton distribution functions in deep inelastic scattering or the Drell-Yan process. In particular, we show that for a spin 1/2 quark target there are three pretzelocity functions.
description: 9 pages, updated references and minor corrections, to appear in the proceedings of the QCD Evolution Workshop 2012 (May 14-17, JLAB)
Numerical studies of the fractional quantum Hall effect in systems with tunable interactions
Creators: name: Papic, Z.
name: Abanin, D. A.
name: Barlas, Y.
name: Bhatt, R. N.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The discovery of the fractional quantum Hall effect in GaAs-based semiconductor devices has lead to new advances in condensed matter physics, in particular the possibility for exotic, topological phases of matter that possess fractional, and even non-Abelian, statistics of quasiparticles. One of the main limitations of the experimental systems based on GaAs has been the lack of tunability of the effective interactions between two-dimensional electrons, which made it difficult to stabilize some of the more fragile states, or induce phase transitions in a controlled manner. Here we review the recent studies that have explored the effects of tunability of the interactions offered by alternative two-dimensional systems, characterized by non-trivial Berry phases and including graphene, bilayer graphene and topological insulators. The tunability in these systems is achieved via external fields that change the mass gap, or by screening via dielectric plate in the vicinity of the device. Our study points to a number of different ways to manipulate the effective interactions, and engineer phase transitions between quantum Hall liquids and compressible states in a controlled manner.
description: 9 pages, 4 figures, updated references; review for the CCP2011 conference, to appear in "Journal of Physics: Conference Series"
Atmospheric Radio Signals From Galactic Dark Matter
Creators: name: Lawson, Kyle
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: If the dark matter of our galaxy is composed of nuggets of quarks or antiquarks in a colour superconducting phase there will be a small but non-zero flux of these objects through the Earth's atmosphere. A nugget of quark matter will deposit only a small fraction of its kinetic energy in the atmosphere and is unlikely to be detectable. If however the impacting object is composed of antiquarks the energy deposited can be quite large and contain a significant charged particle content. These relativistic secondary particles will subsequently be deflected by the earth's magnetic field resulting in the emission of synchrotron radiation. This work will argue that this radiation should be detectable at radio frequencies and that present and proposed experiments are capable of detecting such a signal.
description: Matches published version
Low-energy behavior of spin-liquid electron spectral functions
Creators: name: Tang, Evelyn
name: Fisher, Matthew P. A.
name: Lee, Patrick A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We calculate the electron spectral function for a spin-liquid with a spinon Fermi surface and a Dirac spin-liquid. Calculations are based upon the slave-rotor mean-field theory. We consider the effect of gauge fluctuations using a simple model and find the behavior is not strongly modified. The results, distinct from conventional Mott insulator or band theory predictions, suggest that measuring the spectral function e.g. via ARPES could help in the experimental verification and characterization of spin liquids.
description: 7 pages, 7 figures
A Pseudotetrahedral Terminal Oxoiron(IV) Complex: Mechanistic Promiscuity in C−H Bond Oxidation Reactions
Creators: name: Warm, Katrin
name: Paskin, Alice
name: Kuhlmann, Uwe
name: Bill, Eckhard
name: Swart, Marcel
name: Haumann, Michael
name: Dau, Holger
name: Hildebrandt, Peter
name: Ray, Kallol
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: bioinorganic chemistry
subject: enzyme models
subject: high-valent iron
subject: hydrogen atom abstraction
subject: electron transfer
subject: 500 Naturwissenschaften und Mathematik::540 Chemie::540 Chemie und zugeordnete Wissenschaften

description: S=2 oxoiron(IV) species act as reactive intermediates in the catalytic cycle of nonheme iron oxygenases. The few available synthetic S=2 Fe-IV=O complexes known to date are often limited to trigonal bipyramidal and very rarely to octahedral geometries. Herein we describe the generation and characterization of an S=2 pseudotetrahedral Fe-IV=O complex 2 supported by the sterically demanding 1,4,7-tri-tert-butyl-1,4,7-triazacyclononane ligand. Complex 2 is a very potent oxidant in hydrogen atom abstraction (HAA) reactions with large non-classical deuterium kinetic isotope effects, suggesting hydrogen tunneling contributions. For sterically encumbered substrates, direct HAA is impeded and an alternative oxidative asynchronous proton-coupled electron transfer mechanism prevails, which is unique within the nonheme oxoiron community. The high reactivity and the similar spectroscopic parameters make 2 one of the best electronic and functional models for a biological oxoiron(IV) intermediate of taurine dioxygenase (TauD-J).
Understanding the nature of luminous red galaxies (LRGs): Connecting LRGs to central and satellite subhalos
Creators: name: Masaki, Shogo
name: Hikage, Chiaki
name: Takada, Masahiro
name: Spergel, David N.
name: Sugiyama, Naoshi
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We develop a novel abundance matching method to construct a mock catalog of luminous red galaxies (LRGs) in SDSS, using catalogs of halos and subhalos in N-body simulations for a LCDM model. Motivated by observations suggesting that LRGs are passively-evolving, massive early-type galaxies with a typical age >5Gyr, we assume that simulated halos at z=2 (z2-halo) are progenitors for LRG-host subhalos observed today, and we label the most tightly bound particles in each progenitor z2-halo as LRG ``stars''. We then identify the subhalos containing these stars to z=0.3 (SDSS redshift) in descending order of the masses of z2-halos until the comoving number density of the matched subhalos becomes comparable to the measured number density of SDSS LRGs, n=10^{-4} (h/Mpc)^3. Once the above prescription is determined, our only free parameter is the number density of halos identified at z=2 and this parameter is fixed to match the observed number density at z = 0.3. By tracing subsequent merging and assembly histories of each progenitor z2-halo, we can directly compute, from the mock catalog, the distributions of central and satellite LRGs and their internal motions in each host halo at z=0.3. While the SDSS LRGs are galaxies selected by the magnitude and color cuts from the SDSS images and are not necessarily a stellar-mass-selected sample, our mock catalog reproduces a host of SDSS measurements: the halo occupation distribution for central and satellite LRGs, the projected auto-correlation function of LRGs, the cross-correlation of LRGs with shapes of background galaxies (LRG-galaxy weak lensing), and the nonlinear redshift-space distortion effect, the Finger-of-God effect, in the angle-averaged redshift-space power spectrum.
description: 17 pages, 16 figures. Accepted for publication in MNRAS. Added Appendix in response to the referee's suggestions
Fundamental bounds on qubit reset
Creators: name: Basilewitsch, Daniel
name: Fischer, Jonas
name: Reich, Daniel M.
name: Sugny, Dominique
name: Koch, Christiane P.
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: Quantum control
subject: Quantum information architectures & platforms
subject: Quantum Information
subject: 500 Naturwissenschaften und Mathematik::530 Physik::530 Physik

description: Qubit reset is a key task in the operation of quantum devices which, for many quantum hardware platforms, presently limits device clock speed. While it is known that coupling the qubit to an ancilla on demand allows for the fastest qubit reset, the limits on reset accuracy and speed due to the choice of ancilla have not yet been identified-despite the great flexibility in device design for most quantum hardware platforms. Here, we derive bounds on qubit reset in terms of maximum fidelity and minimum time, assuming control over the qubit and no control over the ancilla. For two-level ancillas, we find a provably time-optimal protocol which consists of purity exchange between qubit and ancilla brought into resonance. The globally minimal time can only be realized for specific choices of coupling and control which we identify. When increasing the size of the ancilla Hilbert space, the maximally achievable fidelity increases, whereas the reset time remains constant. Our results translate into device design principles for realizing, in a given quantum architecture, the fastest and most accurate protocol for qubit reset.
Binary-disk interaction: Gap-Opening criteria
Creators: name: del Valle, Luciano
name: Escala, Andres
Publisher: name: arXiv
Year: 2012
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We study the interaction of an equal mass binary with an isothermal circumbinary disk motivated by the theoretical and observational evidence of the formation of massive black holes binaries surrounded by gas, after a major merger of gas-rich galaxies. We focus on the torques that the binary produces on the disk and how the exchange of angular momentum can drive the formation of a gap on it. We propose that the angular momentum exchange between the binary and the disk is through the gravitational interaction of the binary and a (tidally formed) global non-axisymmetric perturbation in the disk. Using this gravitational interaction we derive an analytic criterion for the formation of a gap in the disk that can be expressed on the structural parameters h/a and M(< r)/M_{bin}. Using SPH simulations we show that the simulations where the binary opens a gap in the disk and the simulations where the disk does not have a gap are distributed in two well separate regions. Our analytic gap-opening criterion predicts a shape of the threshold between this two regions that is consistent with our simulations and the other ones in the literature. We propose an analogy between the regime without (with) a gap in the disk and the Type I (Type II) migration that is observed in simulations of planet-disk interaction (binaries with extreme mass ratios), emphasizing that the interaction that drives the formation of a gap on the disk is different in the regime that we analyze (comparable mass binary).
Biogeography of the cosmopolitan terrestrial diatom Hantzschia amphioxys sensu lato based on molecular and morphological data
Creators: name: Maltsev, Yevhen
name: Maltseva, Svetlana
name: Kociolek, John Patrick
name: Jahn, Regine
name: Kulikovskiy, Maxim
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: Biogeography
subject: Phylogeny
subject: Hantzschia amphioxys
subject: 500 Naturwissenschaften und Mathematik::580 Pflanzen (Botanik)::580 Pflanzen (Botanik)

description: Until now, the reported diversity of representatives from the genus Hantzschia inhabiting soils from different parts of Eurasia was limited to the few species H. amphioxys, H. elongata and H. vivax and some of their infraspecific taxa. We have studied the morphology, ultrastructure and phylogeny of 25 soil diatom strains, which according to published description would be assigned to "H. amphioxys sensu lato" using 18S rDNA, 28S rDNA and rbcL. We show that strains are made up of seven different species of Hantzschia, including five new for science. Five strains were identified as H. abundans. This species has a slight curvature of the raphe near its external proximal ends. Four of the examined strains were represented by different populations of H. amphioxys and their morphological characteristics fully correspond with its isolectotype and epitype. The main specific features of this species include 21-25 striae in 10 mu m, 6-11 fibulae in 10 mu m, 40-50 areolae in 10 mu m and internal proximal raphe endings bent in opposite directions. H. attractiva sp. nov., H. belgica sp. nov., H. parva sp. nov., H. pseudomongolica sp. nov. and H. stepposa sp. nov. were described based on differences in the shape of the valves, significant differences in dimensions, a lower number of striae and areolae in 10 mu m and the degree and direction of deflection of the internal central raphe endings. Based on the study of the morphological variability and phylogeny of soil Hantzschia-species from different geographical locations we conclude that while some species such as H. amphioxys are truly cosmopolitan in their distributions, some sympatric populations of pseudocryptic taxa exist in the Holarctic.
Selling the ‘Gift of Life’: The Ethics of Paid Living Kidney Donation
Creators: name: Koplin, Julian
Publisher: name: Monash University
Year: 2017
Subjects: Uncategorized

description: Kidney transplantation is the treatment of choice for end-stage renal disease. Unfortunately, in most countries the number of patients that could benefit from a transplant significantly exceeds the number of kidneys available from deceased and living organ donors. This thesis considers the ethics of one potential strategy for overcoming the kidney shortage: a system of regulated payments for living kidney donation.

 Live donor kidney markets are most commonly defended on utilitarian grounds. Proponents argue that renal failure patients and impoverished kidney sellers alike could benefit from a legal trade in organs. Most also claim that allowing the sale of kidneys would not have any significant negative effects. This thesis critically assesses, and ultimately rejects, utilitarian arguments for paid living kidney donation. I discuss four under-recognised ways that organ markets might produce harmful outcomes. First, I argue that kidney sellers are likely to experience significant physical, psychological, social and financial harms that more than offset the short-term benefits of the transaction. Second, I argue that a legal trade in organs would likely give rise to harmful social and legal pressures to sell one’s kidney. Third, I argue that a legal trade in organs would exploit the poor in ways that reinforce structural injustices. Fourth, I argue that a legal trade in organs is likely to undermine social solidarity. I conclude that there is good reason to doubt that the consequences of establishing a live donor kidney market would be positive on balance, and suggest that there are likely to be better ways of alleviating the current shortage of transplantable kidneys.
States of the imagination: kingship, class and ritual in early modern Florence
Creators: name: Rosenthal, David
Publisher: name: Monash University
Year: 2019
Subjects: Uncategorized

description: This thesis is a history of artisan festive brigades in Florence known as the potenze (lit. 'the powers'), from the beginning of the ducal state in 1532 until their disappearance in the mid-17th century. It investigates male solidarities, spaces and networks, based on neighbourhood and occupational ties, and shows how these ties both informed, and were shaped by, the approximately 40 festive kingdoms the potenze mapped on to the city. The study examines how potenze brought these work and neighbourhood identities onto the public stage within a carnivalesque ritual genre, in which they played the lords of the 'poor' while the city's nobility briefly acted as their 'subjects'. A language of kingship and state was appropriated in order to articulate social grievances, but also to enter into a dialogue with the Medici princes of Florence, whom they expected to act as their patrons and mediate their everyday relationships. In important ways the politics of the festive stage was interwoven with a non-festive world of protest and negotiation. The second part of the study addresses the transformation of the potenze from the late 16th century. It shows how the religious reform movement in Tridentine Italy vigorously opposed carnivalesque ritual, and that this, in tandem with a declining economy, had the effect of delegitimising the festive life and expenditure of these men. These structural shifts underpinned the decision to strip the potenze of their processional banners in 1610. As the study tracks the transformation of these brigades into purely devotional groups, dedicated to making pilgrimages to shrines and convents in the Florentine countryside, it analyses the rise of new female potenze. Despite implicit resistance, female groups were able to form and seize upon this model of artisan association because, on one hand, the disintegration of the camivalesque genre made the potenze model less aggressively masculine, while, on the other, reformist ideas and initiatives effectively opened up a space in public life for the charitable and devotional activities of lay women.
Remembering the bombing of Darwin: making sense of war memories
Creators: name: Bourke, Valerie Patricia
Publisher: name: Monash University
Year: 2017
Subjects: Uncategorized

description: "We don't really talk about that one. It was a bit of a mess I believe, looting and running away and all." So went Lloyd's response to my revelation that I was interviewing men who had survived the first and largest Japanese bombing raid on Darwin on 19 February 1942. This study aims to understand how a group of elderly veteran survivors of the raid on Darwin that fateful day, have responded to the ambivalent and at times negative representations of their behaviour at that time. It argues that the shifting nature of the Australian public narrative about, and representations of, the Second World War in general and of this event in particular, has had two major outcomes in relation to veteran testimony. Firstly, it predisposed these veteran survivors to come forward and share their experiences seventy years after the event. Secondly, it shaped the nature of their recollections. Analysis of their testimonies confirms that personal remembering cannot be dissociated from the effects of the public narratives prevailing at the time of its retelling. This historiographical study maps and explains the development of Darwin bombing remembrance in the post war decades with reference to an overarching and dominant cultural template, the Anzac legend, which increasingly shaped the public narrative during this period. At the heart of this research is the analysis of the recollections of twelve veteran survivors of that terrible day. I analyse these testimonies using the paradigm of an active constructive memory model articulated through theories of the 'popular memory group'. These veteran survivors make sense of this wartime experience by seeking psychological 'composure' between their personal experiences on the day of the bombing and the changing representation of this event in popular media during the post-war decades. A further aspect of this research has been an examination of the success the veterans have had, via their "agencies of articulation", and the fortuitous evolution of a 'new nationalism', in incorporating their own experiences of the bombing raid into the national Second World War narrative. Popular media representations of this event have become part of the survivors' own narratives. Oral history methodology, involving the critical interpretation of these veteran accounts, increases understandings of how, why, and to what extent, shifting public narratives, in conjunction with other factors, have worked to enable or hinder veteran composure. Whilst acknowledging the epistemological dilemmas and complex issues surrounding the use of such oral testimony to write history, especially the inherent partiality of such sources, this thesis demonstrates how more fully understanding veteran remembering can unlock knowledge about the imbedded beliefs and mythologies that consciously and unconsciously sustain and re-form attitudes to, and depictions of, past military events, what Murphy describes as "societal self knowledge".
title: Full Issue: Journal on Empowering Teaching Excellence, Volume 6, Issue 2, Fall 2022
Creators: name: Utah State University
Publisher: name: Utah State University
Year: 2022

description: The full-length Fall 2022 issue (Volume 6, Issue 2) of the Journal on Empowering Teaching Excellence
Access the online Pressbooks version (with downloadable EPUB format) here.
The Fall 2022 issue presents research and guidance on topics related to reflective practice and learning. The first article examines the impact of the SOAP Notes tool on teaching, learning, and instructor reflection. The second article provides guidance for faculty on how to collect, explain, and showcase their efforts in a teaching portfolio. Article three shares the findings of a student survey to identify students' experience with the design elements found in the Quality Matters rubric. In article four, the authors detail the design and impact of a faculty development workshop for math instruction and how the impact related to the pre-workshop mindset of the instructor. The fifth and final article reveals research into the impact of the COVID-19 pandemic on various obstacles students face to their learning.
Nonlocality and Entanglement for Symmetric States
Creators: name: Wang, Zizhu
name: Markham, Damian
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper, building on some recent progress combined with numerical techniques, we shed some new light on how the nonlocality of symmetric states is related to their entanglement properties and potential usefulness in quantum information processing. We use semidefinite programming techniques to devise a device independent classification of three four qubit states into two classes inequivalent under local unitaries and permutation of systems (LUP). We study nonlocal properties when the number of parties grows large for two important classes of symmetric states: the W states and the GHZ states, showing that they behave differently under the inequalities we consider. We also discuss the monogamy arising from the nonlocal correlations of symmetric states. We show that although monogamy in a strict sense is not guaranteed for all symmetric states, strict monogamy is achievable for all Dicke states when the number of parties goes to infinity, as shown by an inequality based on a recent work studying the nonlocality (and showing strict monogamy) of W states.
description: 13 pages, 5 figures. Added more physical perspectives including discussions about genuine nonlocality
Travelling Trifles: The Souvenirs of Late Eighteenth-Century Female British Tourists
Creators: name: Gleadhill, Emma
Publisher: name: Monash University
Year: 2017
Subjects: History

description: Female British tourists of the late eighteenth century eagerly collected souvenirs during a period when rising incomes, cheaper and more reliable transport, and changes to the political landscape made travel and its objects increasingly accessible to women. However, both travel and the associated practice of collecting (always sources of knowledge and power) were culturally constructed as exclusively masculine pursuits. Genteel British women were restricted to a polite female education directed towards accomplishments. Moreover, it was widely held that they were incapable of the objective analysis and abstract thought required to grasp the Grand Tourist’s classical connoisseurship, or the Enlightened Explorer’s appreciation of natural history and civilisation.
 Nonetheless, this dissertation (drawing from Susan Stewart’s theory of the souvenir as a nostalgic memento) shows that some late eighteenth-century female British tourists were able to subtly subvert this exclusion by manipulating their souvenirs into a natural extension of polite sociability and domesticity that excused their claims to the authority of travelling subject. In so doing they were able to pursue a range of activities and assume a set of responsibilities within British society from which they would normally have been excluded. All late eighteenth-century female British tourists used their souvenirs to perform acts of remembrance in front of others, by which they shaped and reshaped their memories of the empowering experience of travel and their own subjectivities. Some women used their souvenir artworks and antiquities within the polite female context of the salon to establish personae as worldly hostesses and so insert themselves into an exclusively masculine classical cultural heritage. Others collected souvenir natural specimens and documented their eyewitness observations to form personae as cultural interpreters, scientists, and explorers, so staking their own claims on knowledge practice and creation. Still others gave female friends and family souvenirs as a form of relationship currency that supported female sodality and agency.
 By giving the souvenir a historical and temporal dimension, Travelling Trifles thus expands our awareness of genteel British women’s active participation in the Grand Tour and Domestic Tour. This extends previous scholarship on women’s travel writing and the gendered experience of travel and makes an important contribution to our scholarly understanding of the gendering of collecting and material culture.
Accurate crystal structures and chemical properties from NoSpherA2
Creators: name: Kleemiss, Florian
name: Dolomanov, Oleg V.
name: Bodensteiner, Michael
name: Peyerimhoff, Norbert
name: Midgley, Laura
name: Bourhis, Luc J.
name: Genoni, Alessandro
name: Grundkötter-Stock, Bernhard
name: Steinhauer, Simon
name: Lentz, Dieter
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: chemical structure models
subject: accurate crystal structures
subject: crystallographic software
subject: 500 Naturwissenschaften und Mathematik::540 Chemie::540 Chemie und zugeordnete Wissenschaften

description: The relationship between the structure and the properties of a drug or material is a key concept of chemistry. Knowledge of the three-dimensional structure is considered to be of such importance that almost every report of a new chemical compound is accompanied by an X-ray crystal structure - at least since the 1970s when diffraction equipment became widely available. Crystallographic software of that time was restricted to very limited computing power, and therefore drastic simplifications had to be made. It is these simplifications that make the determination of the correct structure, especially when it comes to hydrogen atoms, virtually impossible. We have devised a robust and fast system where modern chemical structure models replace the old assumptions, leading to correct structures from the model refinement against standard in-house diffraction data using no more than widely available software and desktop computing power. We call this system NoSpherA2 (Non-Spherical Atoms in Olex2). We explain the theoretical background of this technique and demonstrate the far-reaching effects that the improved structure quality that is now routinely available can have on the interpretation of chemical problems exemplified by five selected examples.
Bounds on universal quantum computation with perturbed 2d cluster states
Creators: name: Orus, R.
name: Kalis, H.
name: Bornemann, M.
name: Schmidt, K. P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Motivated by the possibility of universal quantum computation under noise perturbations, we compute the phase diagram of the 2d cluster state Hamiltonian in the presence of Ising terms and magnetic fields. Unlike in previous analysis of perturbed 2d cluster states, we find strong evidence of a very well defined cluster phase, separated from a polarized phase by a line of 1st and 2nd order transitions compatible with the 3d Ising universality class and a tricritical end point. The phase boundary sets an upper bound for the amount of perturbation in the system so that its ground state is still useful for measurement-based quantum computation purposes. Moreover, we also compute the local fidelity with the unperturbed 2d cluster state. Besides a classical approximation, we determine the phase diagram by combining series expansions and variational infinite Projected entangled-Pair States (iPEPS) methods. Our work constitutes the first analysis of the non-trivial effect of few-body perturbations in the 2d cluster state, which is of relevance for experimental proposals.
description: 7 pages, 4 figures, revised version, to appear in PRA
Exact Green's Function and Fermi Surfaces from Conformal Gravity
Creators: name: Lu, H.
name: Wang, Zhao-Long
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the Dirac equation of a charged massless spinor on the general charged AdS black hole of conformal gravity. The equation can be solved exactly in terms of Heun's functions. We obtain the exact Green's function in the phase space (ω,k). This allows us to obtain Fermi surfaces for both Fermi and non-Fermi liquids. Our analytic results provide a more elegant approach of studying some strongly interacting fermionic systems not only at zero temperature, but also at any finite temperature. At zero temperature, we analyse the motion of the poles in the complex ωplane and obtain the leading order terms of the dispersion relation, expressed as the Laurent expansion of ωin terms of k. We illustrate new distinguishing features arising at the finite temperature. The Green's function with vanishing ωat finite temperature has a fascinating rich structure of spiked maxima in the plane of k and the fermion charge q.
description: 12 pages, typos corrected, further discussions on the properties of the Green's function and dispersion relation, new figures of the motion of poles added. Version to appear in Phys. Lett. B
Evolving Highly Active Oxidic Iron(III) Phase from Corrosion of Intermetallic Iron Silicide to Master Efficient Electrocatalytic Water Oxidation and Selective Oxygenation of 5-Hydroxymethylfurfural
Creators: name: Hausmann, J. Niklas
name: Beltrán-Suito, Rodrigo
name: Mebs, Stefan
name: Hlukhyy, Viktor
name: Fässler, Thomas F.
name: Dau, Holger
name: Driess, Matthias
name: Menezes, Prashanth W.
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: alkaline oxygen evolution reaction
subject: intermetallic compounds
subject: iron
subject: selective oxygenation of organics
subject: silicon
subject: water oxidation
subject: 500 Naturwissenschaften und Mathematik::540 Chemie::540 Chemie und zugeordnete Wissenschaften

description: In a green energy economy, electrocatalysis is essential for chemical energy conversion and to produce value added chemicals from regenerative resources. To be widely applicable, an electrocatalyst should comprise the Earth's crust's most abundant elements. The most abundant 3d metal, iron, with its multiple accessible redox states has been manifold applied in chemocatalytic processes. However, due to the low conductivity of FeIIIOxHy phases, its applicability for targeted electrocatalytic oxidation reactions such as water oxidation is still limited. Herein, it is shown that iron incorporated in conductive intermetallic iron silicide (FeSi) can be employed to meet this challenge. In contrast to silicon-poor iron–silicon alloys, intermetallic FeSi possesses an ordered structure with a peculiar bonding situation including covalent and ionic contributions together with conducting electrons. Using in situ X-ray absorption and Raman spectroscopy, it could be demonstrated that, under the applied corrosive alkaline conditions, the FeSi partly forms a unique, oxidic iron(III) phase consisting of edge and corner sharing [FeO6] octahedra together with oxidized silicon species. This phase is capable of driving the oxyge evolution reaction (OER) at high efficiency under ambient and industrially relevant conditions (500 mA cm−2 at 1.50 ± 0.025 VRHE and 65 °C) and to selectively oxygenate 5-hydroxymethylfurfural (HMF).
Transport coefficients from the Boson Uehling-Uhlenbeck Equation
Creators: name: Gust, Erich D.
name: Reichl, L. E.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We derive microscopic expressions for the bulk viscosity, shear viscosity and thermal conductivity of a quantum degenerate Bose gas above $T_C$, the critical temperature for Bose-Einstein condensation. The gas interacts via a contact potential and is described by the Uehling-Uhlenbeck equation. To derive the transport coefficients, we use Rayleigh-Schrodinger perturbation theory rather than the Chapman-Enskog approach. This approach illuminates the link between transport coefficients and eigenvalues of the collision operator. We find that a method of summing the second order contributions using the fact that the relaxation rates have a known limit improves the accuracy of the computations. We numerically compute the shear viscosity and thermal conductivity for any boson gas that interacts via a contact potential. We find that the bulk viscosity remains identically zero as it is for the classical case.
description: 10 pages, 2 figures, submitted to Phys. Rev. E
Salmonella Derby: A Comparative Genomic Analysis of Strains From Germany
Creators: name: González Santamarina, Belen
name: García Soto, Silvia
name: Hotzel, Helmut
name: Meemken, Diana
name: Fries, Reinhard
name: Tomaso, Herbert
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: Germany
subject: pig
subject: antimicrobial resistance
subject: sequence type
subject: whole-genome sequencing
subject: Salmonella Derby
subject: 500 Naturwissenschaften und Mathematik::570 Biowissenschaften; Biologie::570 Biowissenschaften; Biologie

description: Salmonella enterica subspecies enterica serovar Derby (S. Derby) is one of the most frequent causes for salmonellosis in humans and animals. Understanding the genetic diversity of S. Derby, as well as the nature and origin of its resistance to antimicrobial treatment are thus the key to epidemiological control and surveillance. Here, we report an analysis of 15 S. Derby strains isolated from pig and cattle in slaughterhouses across Germany (2000–2015), which belonged to multilocus sequence types (ST) ST39, ST40 and ST682. Strains were compared to publicly available S. Derby sequence data of these three STs from Germany, comprising 65 isolates collected between 2004 and 2018 from different sources (i.e., pigs, humans, cattle, wild boar, and poultry). A total of 80 sequences (ST39 = 34, ST40 = 21, and ST682 = 25) were analyzed to assess genetic diversity, to identify virulence-associated and antimicrobial resistance genes (ARGs), and to characterize plasmid content. Strains belonging to all three STs were identified in each source examined. Strains with the same ST were closely related regardless of origin. Altogether, 72.5% of the isolates carried at least one resistance gene, furthermore ST40 carried most of the ARGs and the plasmid replicons. The IncI1 replicon was detected in eleven isolates, four of them carried IncI1 plasmid ST26 with clonal complex 2. The comparison of these four isolates with an IncI1 ST26 plasmid reported in 2010 from a German pig (JX566770), showed only variations in a region carrying different ARGs and mobile genetic elements. The strains of our collection had similar genetic diversity as the strains taken from the public database. Moreover, we found that strains harboring multidrug resistant IncI plasmid were found in different animal species, indicating that S. Derby may be implicated in the spread of antimicrobial resistance among animal species. Results may contribute to the knowledge about the diversity in S. Derby in Germany, which may be useful for the future surveillance and antimicrobial resistance of this serovar.
A biophysical observation model for field potentials of networks of leaky integrate-and-fire neurons
Creators: name: Graben, Peter beim
name: Rodrigues, Serafim
Publisher: name: arXiv
Year: 2012
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Biological sciences

description: We present a biophysical approach for the coupling of neural network activity as resulting from proper dipole currents of cortical pyramidal neurons to the electric field in extracellular fluid. Starting from a reduced threecompartment model of a single pyramidal neuron, we derive an observation model for dendritic dipole currents in extracellular space and thereby for the dendritic field potential that contributes to the local field potential of a neural population. This work aligns and satisfies the widespread dipole assumption that is motivated by the "open-field" configuration of the dendritic field potential around cortical pyramidal cells. Our reduced three-compartment scheme allows to derive networks of leaky integrate-and-fire models, which facilitates comparison with existing neural network and observation models. In particular, by means of numerical simulations we compare our approach with an ad hoc model by Mazzoni et al. [Mazzoni, A., S. Panzeri, N. K. Logothetis, and N. Brunel (2008). Encoding of naturalistic stimuli by local field potential spectra in networks of excitatory and inhibitory neurons. PLoS Computational Biology 4 (12), e1000239], and conclude that our biophysically motivated approach yields substantial improvement.
description: 31 pages, 4 figures