cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Bell's experiment with intra- and inter-pair entanglement: Single-particle mode entanglement as a case study
Creators: name: Ashhab, S.
name: Maruyama, Koji
name: Brukner, Caslav
name: Nori, Franco
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Theoretical considerations of Bell-inequality experiments usually assume identically prepared and independent pairs of particles. Here we consider pairs that exhibit both intra- and inter-pair entanglement. The pairs are taken from a large many-body system where all the pairs are generally entangled with each other. Using an explicit example based on single mode entanglement and an ancillary Bose-Einstein condensate, we show that the Bell-inequality violation in such systems can display statistical properties that are remarkably different from those obtained using identically prepared, independent pairs. In particular, one can have probabilistic violation of Bell's inequalities in which a finite fraction of all the runs result in violation, even though there could be no violation when averaging over all the runs. Whether or not a particular run of results will end up being local realistically explainable is "decided" by a sequence of quantum (random) outcomes.
description: 7 pages (two column), 5 figures
Observation of superconducting vortex clusters in S/F hybrids
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2016
Subjects: 0912 Materials Engineering

description: © 2016 The Author(s). While Abrikosov vortices repel each other and form a uniform vortex lattice in bulk type-II superconductors, strong confinement potential profoundly affects their spatial distribution eventually leading to vortex cluster formation. The confinement could be induced by the geometric boundaries in mesoscopic-size superconductors or by the spatial modulation of the magnetic field in superconductor/ferromagnet (S/F) hybrids. Here we study the vortex confinement in S/F thin film heterostructures and we observe that vortex clusters appear near magnetization inhomogeneities in the ferromagnet, called bifurcations. We use magnetic force microscopy to image magnetic bifurcations and superconducting vortices, while high resolution scanning tunneling microscopy is used to obtain detailed information of the local electronic density of states outside and inside the vortex cluster. We find an intervortex spacing at the bifurcation shorter than the one predicted for the same superconductor in a uniform magnetic field equal to the thermodynamical upper critical field H c2. This result is due to a local enhanced stray field and a competition between vortex-vortex repulsion and Lorentz force. Our findings suggest that special magnetic topologies could result in S/F hybrids that support superconductivity even when locally the vortex density exceeds the thermodynamic critical threshold value beyond which the superconductivity is destroyed.
Intrinsic statistical regularity of topological charges revealed in dynamical disk model
Creators: name: Sun, Ranzhi
name: Yao, Zhenwei
Publisher: name: arXiv
Year: 2024
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Identifying ordered structures hidden in the packings of particles is a common scientific question in multiple fields. In this work, we investigate the dynamical organizations of a large number of initially randomly packed repulsive particles confined on a disk under the Hamiltonian dynamics by the recently developed algorithm called the random batch method. This algorithm is specifically designed for reducing the computational complexity of long-range interacting particle systems. We highlight the revealed intrinsic statistical regularity of topological charges that is otherwise unattainable by the continuum analysis of particle density. We also identify distinct collective dynamics of the interacting particles under short- and long-range repulsive forces. This work shows the robustness and effectiveness of the concept of topological charge for characterizing the convoluted particle dynamics, and demonstrates the promising potential of the random batch method for exploring fundamental scientific questions arising in a variety of long-range interacting particle systems in soft matter physics and other relevant fields.
description: 9 pages, 6 figures
Future of thermal comfort in an energy-constrained world
Creators: name: Law, TO
Publisher: name: University Of Tasmania
Year: 2023

description: In the context of global warming the sum of current trajectories, known as the 'business as usual' scenario, is generally compared unfavourably to alternative low-carbon scenarios. One of these trajectories sees the continuation of an unabated demand for air-conditioning with its inevitable increase in energy consumption. This thesis proposes strategies to ameliorate this problem in the difficult context of a knowledge-based economy in an equatorial climate. It begins by retracing the emergence of thermal comfort standards in consumer societies, typified by the pursuit of individualistic interests. It identifies a gap that can explain why the scientifically valid adaptive comfort standard has not stemmed the continuous growth in air-conditioning demand, especially in knowledge-based economies. It is proposed that the nexus is brain cooling and while some studies have acknowledged, it has been too complex to quantify in existing comfort models. With the high variability of individual comfort demands, this thesis argues that future provisions of thermal comfort will be achieved by facilitating personal control over the microclimate. A number of innovations are explored through cycles of action research, and the underlying problems are then crystallised. A successful innovation has to appeal to the business interests of key decision makers, conform to consumer interests of improved thermal comfort and address the need to conserve energy. This has led to the development of a whole building solution (the Rain Tower), a floor-by-floor approach (a desiccant wheel AHU) and finally, cooling by means of a personal air-conditioning system called the Ductless Task Air-Conditioning (DTAC) system. The DTAC technology, meeting the criteria for commercialisation, was subsequently prototyped and its performance measured. Further refinements were made before undertaking a pilot study to field trial the system in naturally ventilated offices and a climate controlled room. The results are analysed statistically to quantify its improvement to sensation and comfort. Whilst this thesis emerges from an architectural science platform with a primary interest in thermal comfort, it draws on the disciplines of engineering, sociology, physiology and business to frame and propose viable solutions to this complex real world problem. This thesis studies the behaviours that persist in the business-as-usual scenario and the reasons for the difficulties in changing attitudes. Technologies are then developed to reduce the environmental impact of air-conditioning whilst conforming to current and future expectations of thermal comfort. The results of the research demonstrate that thermal comfort, with reduced carbon emissions compared with conventional air-conditioning, can be provided for workers in knowledge-based economies in hot humid equatorial climates.
GIFT: A real-time and scalable 3D shape search engine
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2016
Subjects: cs.CV

description: © 2016 IEEE. Projective analysis is an important solution for 3D shape retrieval, since human visual perceptions of 3D shapes rely on various 2D observations from different view points. Although multiple informative and discriminative views are utilized, most projection-based retrieval systems suffer from heavy computational cost, thus cannot satisfy the basic requirement of scalability for search engines. In this paper, we present a real-time 3D shape search engine based on the projective images of 3D shapes. The real-time property of our search engine results from the following aspects: (1) efficient projection and view feature extraction using GPU acceleration, (2) the first inverted file, referred as F-IF, is utilized to speed up the procedure of multi-view matching, (3) the second inverted file (S-IF), which captures a local distribution of 3D shapes in the feature manifold, is adopted for efficient context-based reranking. As a result, for each query the retrieval task can be finished within one second despite the necessary cost of IO overhead. We name the proposed 3D shape search engine, which combines GPU acceleration and Inverted File (Twice), as GIFT. Besides its high efficiency, GIFT also outperforms the state-of-the-art methods significantly in retrieval accuracy on various shape benchmarks and competitions.
Why do membranes of some unhealthy cells adopt a cubic architecture?
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2016
Subjects: 0601 Biochemistry and Cell Biology
Generic Health Relevance
2.1 Biological and endogenous factors

description: © 2016 American Chemical Society. Nonlamellar lipid arrangements, including cubosomes, appear in unhealthy cells, e.g., when they are subject to stress, starvation, or viral infection. The bioactivity of cubosomes-nanoscale particles exhibiting bicontinuous cubic structures-versus more common vesicles is an unexplored area due to lack of suitable model systems. Here, glycodendrimercubosomes (GDCs)-sugar-presenting cubosomes assembled from Janus glycodendrimers by simple injection into buffer-are proposed as mimics of biological cubic membranes. The bicontinuous cubic GDC architecture has been demonstrated by electron tomography. The stability of these GDCs in buffer enabled studies on lectin-dependent agglutination, revealing significant differences compared with the vesicular glycodendrimersome (GDS) counterpart. In particular, GDCs showed an increased activity toward concanavalin A, as well as an increased sensitivity and selectivity toward two variants of banana lectins, a wild-type and a genetically modified variant, which is not exhibited by GDSs. These results suggest that cells may adapt under unhealthy conditions by undergoing a transformation from lamellar to cubic membranes as a method of defense.
Patchiness of ciliate communities sampled at varying spatial scales along the New England shelf
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2016
Subjects: Bays
Biodiversity
Ciliophora
DNA Fingerprinting
DNA, Protozoan
Environment
High-Throughput Nucleotide Sequencing
New England
Phylogeny
Phylogeography

description: © 2016 Grattepanche et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Although protists (microbial eukaryotes) provide an important link between bacteria and Metazoa in food webs, we do not yet have a clear understanding of the spatial scales on which protist diversity varies. Here, we use a combination of DNA fingerprinting (denaturant gradient gel electrophoresis or DGGE) and high-throughput sequencing (HTS) to assess the ciliate community in the class Spirotrichea at varying scales of 1-3 km sampled in three locations separated by at least 25 km-offshore, midshelf and inshore-along the New England shelf. Analyses of both abundant community (DGGE) and the total community (HTS) members reveal that: 1) ciliate communities are patchily distributed inshore (i.e. the middle station of a transect is distinct from its two neighboring stations), whereas communities are more homogeneous among samples within the midshelf and offshore stations; 2) a ciliate closely related to Pelagostrobilidium paraepacrum 'blooms' inshore and; 3) environmental factors may differentially impact the distributions of individual ciliates (i.e. OTUs) rather than the community as a whole as OTUs tend to show distinct biogeographies (e.g. some OTUs are restricted to the offshore locations, some to the surface, etc.). Together, these data show the complexity underlying the spatial distributions of marine protists, and suggest that biogeography may be a property of ciliate species rather than communities.
Direct observation and simultaneous use of linear and quadratic electro-optical effects
Creators: name: Steglich, Patrick
name: Mai, Christian
name: Villringer, Claus
name: Mai, Andreas
Publisher: name: Bristol : IOP Publ.
Year: 2020
Subjects: subject: Electro-optical effects
subject: Electro-optical polymers
subject: Photonic devices
subject: Photonic integrated circuit
subject: Silicon photonics
subject: Silicon-organic hybrid technology
subject: Slot waveguide
subject: 530

description: We report on the direct observation and simultaneous use of the linear and quadratic electro-optical effect and propose a method by which higher-order susceptibilities of electro-optical materials can be determined. The evaluation is based on the separation of the second- and third-order susceptibilities and the experimental technique uses a slot waveguide ring resonator fabricated in integrated photonic circuit technology, which is embedded by a guest-host polymer system consisting of the azobenzene dye Disperse Red 1 in a poly(methyl methacrylate) matrix as an active electro-optical material. The contribution of both effects on the electro-optical response under the influence of static and time-varying electrical fields is investigated. We show that the quadratic electro-optical effect has a significant influence on the overall electro-optical response even with acentric molecular orientated molecules. Our findings have important implications for developing electro-optical devices based on polymer-filled slot waveguides and give rise to advanced photonic circuits. © 2020 IOP Publishing Ltd.
Regulation of the LIFR and gp130 genes by the RUNX1 transcription factor
Creators: name: Qadi, AA
Publisher: name: University Of Tasmania
Year: 2023

description: The RUNX1 transcription factor is an important regulator of haematopoiesis and has been found to influence gene activity at both the transcriptional and chromatin levels. In leukaemia, particularly Acute Myeloid Leukaemia, RUNX1 activity is frequently altered by point mutations and chromosomal rearrangements, the most common being the t(8;21) translocation that produces a RUNX1-ETO fusion protein. While RUNX1 is generally associated with gene activation, RUNX1-ETO mainly acts as a transcriptional repressor and its presence is therefore associated with altered expression of RUNX1 target genes. Previous microarray analysis performed in our laboratory identified both the LIFR and gp130 genes as novel putative RUNX1 targets. LIFR together with gp130 forms a heterodimeric receptor complex that mediates LIF signalling, and in doing so controls various cellular processes including cellular development, differentiation and inflammatory responses. However, despite their important biological roles little is known about regulation of the LIFR and gp130 genes. Bioinformatic analysis identified potential RUNX1 binding sites in the promoters of both the LIFR and gp130 genes, and this study therefore examined the hypothesis that LIFR and gp130 are RUNX1 target genes and their altered expression in leukemic cells in which RUNX1 is disrupted may therefore contribute to leukaemia. The LIFR gene is regulated by alternate promoters, with a so called 'general' and 'placental' promoter previously described. Analysis of LIFR mRNA across a number of cell types demonstrated that activity of the placental promoter is limited to cell lines of placental origin, while the general promoter is active in a range of cell types, including myeloid cells. This was confirmed by analysis of the chromatin status of the two promoters, which found that the general, but not placental promoter is assembled into highly acetylated histones in myeloid cells. The expression of the gp130 mRNA was detected across all cells lines examined. Reporter analysis demonstrated that both the placental and general promoters can be activated by RUNX1 in placental and myeloid cell lines respectively. In addition, the gp130 promoter was activated by RUNX1 in myeloid cell lines. In contrast, RUNX1-ETO repressed both the LIFR and gp130 promoters in myeloid cells. Further, binding of RUNX1 to the endogenous LIFR and gp130 promoters was confirmed by chromatin immunoprecipitation, suggesting that the endogenous promoters are targeted by RUNX1. In support of this RUNX1 knockdown reduced LIFR and gp130 expression in myeloid cell lines, and decreased expression of the placental LIFR transcript in placental cells. Put together, the data presented in this thesis demonstrates that RUNX1 regulates expression of the LIFR and gp130 promoters, suggesting that activity of the LIFR/gp130 receptor complex is likely to be altered in leukaemic cells in which RUNX1 is altered.
[Bis(diphenylphosphanyl)dimethylsilane κ2P,P′] tetracarbonylchromium(0)
Creators: name: Peulecke, N.
name: Peitz, S.
name: Müller, B.H.
name: Spannenberg, A.
name: Rosenthal, U.
Publisher: name: Chester : International Union of Crystallography
Year: 2010
Subjects: subject: Crystal structure
subject: Chemistry
subject: Crystallography
subject: 540

description: The title compound, [Cr(C26H26P2Si)(CO) 4], was obtained by the reaction of Ph2PSiMe 2PPh2 with Cr(CO)6 in refluxing toluene by ligand exchange. The CrC4P2 coordination geometry at the Cr atom is distorted octa-hedral, with a P - Cr - P bite angle of 80.27 (1)°.
A Real-World Multicentre Retrospective Study of Paclitaxel-Bevacizumab and Maintenance Therapy as First-Line for HER2-Negative Metastatic Breast Cancer
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2017
Subjects: Adult
Aged
Aged, 80 and over
Bevacizumab
Breast Neoplasms
Disease-Free Survival
Female
Humans
Maintenance Chemotherapy
Middle Aged
Multivariate Analysis
Neoplasm Metastasis
Paclitaxel
Proportional Hazards Models
Receptor, ErbB-2
Retrospective Studies
Treatment Outcome

description: © 2016 Wiley Periodicals, Inc. Bevacizumab in combination with taxanes in HER2-negative metastatic breast cancer (MBC) patients has shown improved progression-free survival (PFS), despite the lack of clear overall survival (OS) benefit. We performed a retrospective analysis to evaluate the impact of paclitaxel-bevacizumab and of maintenance therapy with bevacizumab (BM) and endocrine therapy (ET) in the real-world practice. We identified 314 HER2-negative MBC patients treated in 12 cancer centers. Overall, the median PFS and OS were 14 and 40 months, respectively. Among the 254 patients potentially eligible for BM, 183 received BM after paclitaxel discontinuation until progression/toxicity. PFS and OS were improved in patients who had received BM in comparison with those potentially eligible but who did not receive BM (P< 0.0001 and P = 0.001, respectively). Results were confirmed when adjusting for propensity score. Among the 216 hormone-receptor positive patients eligible for BM, a more favorable PFS and OS were observed when maintenance ET was administered (P < 0.0001). Multivariate analysis showed that PS, BM, number of disease sites and maintenance ET were related to PFS, while response and maintenance ET were related to OS. In hormone-receptor positive patients, BM produced a significant PFS and a trend towards OS benefit only in absence of maintenance ET (P = 0.0007 and P = 0.06, respectively). In the triple-negative subgroup, we observed a trend towards a better OS for patients who received BM (P = 0.06), without differences in PFS (P = 0.21). Our results confirmed the efficacy of first-line paclitaxel-bevacizumab in real-world practice; both BM and maintenance ET significantly improved PFS and OS compared to no maintenance therapies. J. Cell. Physiol. 232: 1571–1578, 2017. © 2016 Wiley Periodicals, Inc.
The Rest-Frame Optical Luminosity Function of Cluster Galaxies at z<0.8 and the Assembly of the Cluster Red Sequence
Creators: name: Rudnick, Gregory
name: von der Linden, Anja
name: Pello, Roser
name: Aragon-Salamanca, Alfonso
name: Marchesini, Danilo
name: Clowe, Douglas
name: De Lucia, Gabriella
name: Halliday, Claire
name: Jablonka, Pascale
name: Milvang-Jensen, Bo
name: Poggianti, Bianca
name: Saglia, Roberto
name: Simard, Luc
name: White, Simon
name: Zaritsky, Dennis
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present the rest-frame optical luminosity function (LF) of red sequence galaxies in 16 clusters at 0.4
description: Accepted for publication in the Astrophysical Journal. 36 pages, 16 figures, 10 tables
Impact of Reactive Amphiphilic Copolymers on Mechanical Properties and Cell Responses of Fibrin-Based Hydrogels
Creators: name: Al Enezy-Ulbrich, Miriam Aischa
name: Malyaran, Hanna
name: De Lange, Robert Dirk
name: Labude, Norina
name: Plum, René
name: Rütten, Stephan
name: Terefenko, Nicole
name: Wein, Svenja
name: Neuss, Sabine
name: Pich, Andrij
Publisher: name: Weinheim : Wiley-VCH
Year: 2020
Subjects: subject: hierarchical structures
subject: hybrid materials
subject: hydrogels
subject: medical applications
subject: tissue engineering
subject: 620
subject: 540
subject: 530

description: Mechanical properties of hydrogels can be modified by the variation of structure and concentration of reactive building blocks. One promising biological source for the synthesis of biocompatible hydrogels is fibrinogen. Fibrinogen is a glycoprotein in blood, which can be transformed enzymatically to fibrin playing an important role in wound healing and clot formation. In the present work, it is demonstrated that hybrid hydrogels with their improved mechanical properties, tunable internal structure, and enhanced resistance to degradation can be synthesized by a combination of fibrinogen and reactive amphiphilic copolymers. Water-soluble amphiphilic copolymers with tunable molecular weight and controlled amounts of reactive epoxy side groups are used as reactive crosslinkers to reinforce fibrin hydrogels. In the present work, copolymers that can influence the mechanical properties of fibrin-based hydrogels are used. The reactive copolymers increase the storage modulus of the hydrogels from 600 Pa to 30 kPa. The thickness of fibrin fibers is regulated by the copolymer concentration. It could be demonstrated that the fibrin-based hydrogels are biocompatible and support cell proliferation. Their degradation rate is considerably slower than that of native fibrin gels. In conclusion, fibrin-based hydrogels with tunable elasticity and fiber thickness useful to direct cell responses like proliferation and differentiation are produced. © 2020 The Authors. Published by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Market model for resource allocation in emerging sensor networks with reinforcement learning
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2016
Subjects: agent-based modelling
emerging sensor networks
Internet of Things
market model
reinforcement learning
resource allocation
topology management

description: © 2016 by the authors; licensee MDPI, Basel, Switzerland. Emerging sensor networks (ESNs) are an inevitable trend with the development of the Internet of Things (IoT), and intend to connect almost every intelligent device. Therefore, it is critical to study resource allocation in such an environment, due to the concern of efficiency, especially when resources are limited. By viewing ESNs as multi-agent environments, we model them with an agent-based modelling (ABM) method and deal with resource allocation problems with market models, after describing users’ patterns. Reinforcement learning methods are introduced to estimate users’ patterns and verify the outcomes in our market models. Experimental results show the efficiency of our methods, which are also capable of guiding topology management.
Ground states of Heisenberg evolution operator in discrete three-dimensional space-time and quantum discrete BKP equations
Creators: name: Sergeev, Sergey M.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: In this paper we consider three-dimensional quantum q-oscillator field theory without spectral parameters. We construct an essentially big set of eigenstates of evolution with unity eigenvalue of discrete time evolution operator. All these eigenstates belong to a subspace of total Hilbert space where an action of evolution operator can be identified with quantized discrete BKP equations (synonym Miwa equations). The key ingredients of our construction are specific eigenstates of a single three-dimensional R-matrix. These eigenstates are boundary states for hidden three-dimensional structures of U_q(B_n^1) and U_q(D_n^1)$.
description: 13 pages
Internal epitope tagging informed by relative lack of sequence conservation
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2016
Subjects: Amino Acid Sequence
Animals
Antibodies
Conserved Sequence
Epitopes
Proteins
Sequence Alignment
Zebrafish

description: Many experimental techniques rely on specific recognition and stringent binding of proteins by antibodies. This can readily be achieved by introducing an epitope tag. We employed an approach that uses a relative lack of evolutionary conservation to inform epitope tag site selection, followed by integration of the tag-coding sequence into the endogenous locus in zebrafish. We demonstrate that an internal epitope tag is accessible for antibody binding, and that tagged proteins retain wild type function.
Phonon-Polaritonic Bowtie Nanoantennas: Controlling Infrared Thermal Radiation at the Nanoscale
Creators: name: Wang, Tao
name: Li, Peining
name: Chigrin, Dmitry N.
name: Giles, Alexander J.
name: Bezares, Francisco J.
name: Glembocki, Orest J.
name: Caldwell, Joshua D.
name: Taubner, Thomas
Publisher: name: Washington, DC : ACS Publications
Year: 2017
Subjects: subject: bowtie antenna
subject: nanophotonics
subject: polar crystal
subject: silicon carbide
subject: surface phonon polariton
subject: thermal emission
subject: 620
subject: 530

description: A conventional thermal emitter exhibits a broad emission spectrum with a peak wavelength depending upon the operation temperature. Recently, narrowband thermal emission was realized with periodic gratings or single microstructures of polar crystals supporting distinct optical modes. Here, we exploit the coupling of adjacent phonon-polaritonic nanostructures, demonstrating experimentally that the nanometer-scale gaps can control the thermal emission frequency while retaining emission line widths as narrow as 10 cm-1. This was achieved by using deeply subdiffractional bowtie-shaped silicon carbide nanoantennas. Infrared far-field reflectance spectroscopy, near-field optical nanoimaging, and full-wave electromagnetic simulations were employed to prove that the thermal emission originates from strongly localized surface phonon-polariton resonances of nanoantenna structures. The observed narrow emission line widths and exceptionally small modal volumes provide new opportunities for the user-design of near- and far-field radiation patterns for advancements in infrared spectroscopy, sensing, signaling, communications, coherent thermal emission, and infrared photodetection. © 2017 American Chemical Society.
Keeping up appearances : a photographic investigation into the theatricality of the suburban domestic interior
Creators: name: Robson, N
Publisher: name: University Of Tasmania
Year: 2023

description: A photograph of a domestic interior is a source of fascination in that it offers viewers a window into an environment, which is considered private, encouraging the desire to investigate the occupants' identities. At the same time however, this desire is frequently frustrated by the ways in which domestic environments are carefully constructed to conceal rather than reveal the true identity of their inhabitants. Using photographic documentation of constructed life-size home interiors I explore this conundrum, highlighting how the viewers' assessment of these spaces can be manipulated through theatrical devices, resulting in varying interpretations. If we consider the domestic environment like a theatre, particular areas of the home are presented as 'centre stage' such as the living rooms, whereas areas such as bathrooms and bedrooms become the 'backstage, dressing rooms'. This creates layers of social behavior, allowing the occupant(s) to manipulate what is presented to public view as a representation of their identities. The people living in these environments are actors on a domestic stage. Within the field of this research I have paid particular attention to artists who interrogate the construction of the domestic environment. Photographers Jeff Wall, Gregory Crewdson, Angela Strassheim and Anne Zahalka have been examined because of their elaborate construction methods and investigation into the domestic, suburban space. Edgar Degas is also a primary influence examined in my research, due to the way he portrays people in their private interiors. In addition, I have looked at the work of Alfred Hitchcock, in particular the film, Rear Window because of his emphasis on the voyeuristic gaze into private interiors, his approach to set design and the creation of a visual narrative. The work is created through a purpose built set, redecorated for each photographic shoot. I use the analogy of a life-sized doll's house and the models as an assortment of dolls positioned to 'play house'. The environments created are emphatic in their over-ornamentation. They represent an obsessive act of collecting and reassembling discarded second-hand ornaments and decor items in an attempt to reorder and revitalise their histories. The work relies on the slippage between the real and artifice, as models play families and three sheets of MDF become a room.
A protocol for safe lithiation reactions using organolithium reagents
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2016
Subjects: Chemistry
Issue 117
Organolithium
air-sensitive handling
glovebox
Schlenk line
synthesis

description: © 2016 Journal of Visualized Experiments. Organolithium reagents are powerful tools in the synthetic chemist's toolbox. However, the extreme pyrophoric nature of the most reactive reagents warrants proper technique, thorough training, and proper personal protective equipment. To aid in the training of researchers using organolithium reagents, a thorough, step-by-step protocol for the safe and effective use of tert-butyllithium on an inert gas line or within a glovebox is described. As a model reaction, preparation of lithium tert-butyl amide by the reaction of tert-butyl amine with one equivalent of tert-butyl lithium is presented.
Transverse power flow reversing of confined waves in extreme nonlinear metamaterials
Creators: name: Ciattoni, A.
name: Rizza, C.
name: Palange, E.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Optics (physics.optics)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: We theoretically prove that electromagnetic beams propagating through a nonlinear cubic metamaterial can exhibit a power flow whose direction reverses its sign along the transverse profile. This effect is peculiar of the hitherto unexplored extreme nonlinear regime where the nonlinear response is comparable or even greater than the linear contribution, a condition achievable even at relatively small intensities. We propose a possible metamaterial structure able to support the extreme conditions where the polarization cubic nonlinear contribution does not act as a mere perturbation of the linear part.
Travel journalism,cosmopolitan concern and the place-branded environment
Creators: name: McGaurr, Lynette
Publisher: name: University Of Tasmania
Year: 2023

description: The physical environment is a mainstay of the international tourism industry and a component of many place brands. It is also a global asset and, increasingly, a source of conflict and concern. Drawing on a case study of United States and British travel journalism about Australia's island state of Tasmania, this thesis asks how cosmopolitan concern and place branding interact in the production of travel journalism about tourist destinations experiencing environmental conflict. Rather than concentrating on production in the newsroom, however, its primary interest is what happens in the field. By interviewing travel journalists and actors who have sought to have their messages publicised in overseas newspaper and magazine articles about Tasmania as a holiday destination, the case study weaves together internalist and externalist perspectives. Combining these with textual analyses of travel journalism and other documents, it explores both professional cultures and the evolution and circulation of cosmopolitan and place-branded discourses and frames. Much international travel journalism mediates commercial tourism for consumers, but it also produces and reflects local identity on the cosmopolitan public stage. The travel media's reliance on the tourism industry for content and advertising makes it susceptible to reputation management via place branding. This is because government tourism office staff and the sources they recommend are often key contacts for its journalists, whether or not they accept free travel and accommodation. But as this case study reveals, some transnational travel journalists demonstrate cosmopolitan predispositions that can lead them to be reflexive about the way they represent places, and to draw on broader networks for information and opinion. This thesis finds that place branding shapes consumerist cosmopolitan discourses in ways that appeal to transnational travel journalists and are consistent with the commercial constraints of the travel media, thereby contributing to the circulation abroad of representations that depoliticise landscapes contested in the news media. Associated with this, travel journalists reporting on nature-based destinations sometimes build narrative strength by mediating forms of cosmopolitan concern for the environment that are consistent with place branding. This, in turn, positions readers as members of imagined cosmopolitan communities, enhances the journalist's cultural capital and functions textually to frame destinations, the tourism industry and the travel media as environmentally responsible. If governments lose control over nature-based brands during periods of environmental conflict, however, travel media institutions may see value to their own brands in calling places to account. This presents travel journalists and sources with interest-group sympathies an opportunity to contribute alternative, politically charged meanings and symbols to international flows of cosmopolitan concern.
Phase diagram and thermal expansion measurements on the system URu2-xFexSi2
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2016
Subjects: hidden order
URu2Si2
thermal expansion

description: © 2016, National Academy of Sciences. All rights reserved. Thermal expansion, electrical resistivity, magnetization, and specific heat measurements were performed on URu2-xFexSi2 single crystals for various values of Fe concentration x in both the hidden-order (HO) and large-moment antiferromagnetic (LMAFM) regions of the phase diagram. Our results show that the paramagnetic (PM) to HO and LMAFM phase transitions are manifested differently in the thermal expansion coefficient. The uniaxial pressure derivatives of the HO/LMAFM transition temperature T0 change dramatically when crossing from the HO to the LMAFM phase. The energy gap also changes consistently when crossing the phase boundary. In addition, for Fe concentrations at xc ≈ 0.1, we observe two features in the thermal expansion upon cooling, one that appears to be associated with the transition from the PM to the HO phase and another one at lower temperature that may be due to the transition from the HO to the LMAFM phase.
Possible creation of net circular polarization and not only depolarization of spectral lines by isotropic collisions
Creators: name: Stepan, Jiri
name: Sahal-Brechot, Sylvie
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We will show that isotropic collisions of electrons and protons with neutral hydrogen can lead to creation of net orientation of the atomic levels in the presence of a magnetic field. Consequently, the emitted Stokes-V profile of the spectral lines can be almost symmetric in contrast to the typical antisymmetric signature of the Zeeman effect. Moreover, the amplitude of the symmetric lobe can be significantly higher than the amplitude of the antisymmetric components. This mechanism is caused by a $\pm{M}$ symmetry breaking of the collisional transitions between different Zeeman sublevels. We will show an example of our first results for the H$α$ line. This new mechanism could perhaps explain the net circular polarization of spectral lines observed in some solar limb observations and which are currently not understood. However, our results are very preliminary and more developments are needed for going further on.
description: 4 pages, 3 figures, published in Proceedings of the SF2A conference, Paris, 2008
Molecular investigations on a chimeric strain of Staphylococcus aureus sequence type 80
Creators: name: Gawlik, Darius
name: Ruppelt-Lorz, Antje
name: Müller, Elke
name: Reißig, Annett
name: Hotzel, Helmut
name: Braun, Sascha D.
name: Söderquist, Bo
name: Ziegler-Cordts, Albrecht
name: Stein, Claudia
name: Pletz, Mathias W.
name: Ehricht, Ralf
name: Monecke, Stefan
Publisher: name: San Francisco, California, US : PLOS
Year: 2020
Subjects: subject: Staphylococcus aureus
subject: lymphadenitis
subject: mcroarray hybridisation
subject: 500
subject: 610

description: A PVL-positive, methicillin-susceptible Staphylococcus aureus was cultured from pus from cervical lymphadenitis of a patient of East-African origin. Microarray hybridisation assigned the isolate to clonal complex (CC) 80 but revealed unusual features, including the presence of the ORF-CM14 enterotoxin homologue and of an ACME-III element as well as the absence of etD and edinB. The isolate was subjected to both, Illumina and Nanopore sequencing allowing characterisation of deviating regions within the strain´s genome. Atypical features of this strain were attributable to the presence of two genomic regions that originated from other S. aureus lineages and that comprised, respectively, 3% and 1.4% of the genome. One deviating region extended from walJ to sirB. It comprised ORF-CM14 and the ACME-III element. A homologous but larger fragment was also found in an atypical S. aureus CC1/ST567 strain whose lineage might have served as donor of this genomic region. This region itself is a chimera comprising fragments from CC1 as well as fragments of unknown origin. The other deviating region comprised the region from htsB to ecfA2, i.e., another 3% of the genome. It was very similar to CC1 sequences. Either this suggests an incorporation of CC1 DNA into the study strain, or alternatively a recombination event affecting “canonical” CC80. Thus, the study strain bears witness of several recombination events affecting supposedly core genomic genes. Although the exact mechanism is not yet clear, such chimerism seems to be an additional pathway in the evolution of S. aureus. This could facilitate also a transmission of virulence and resistance factors and therefore offer an additional evolutionary advantage.
Mathematik im Kontext: Geschichte der mathematischen Wissenschaften in der frühen Neuzeit (16. - 18. Jahrhundert)
Creators: name: (:Unkn) Unknown
Publisher: name: Oberwolfach-Walke : Mathematisches Forschungsinstitut Oberwolfach
Year: 2003
Subjects: subject: Konferenzschrift
subject: 510

description: [no abstract available]
Metal-Free Gas Supply at the Edge of Reionization: Late-Epoch Population III Star Formation
Creators: name: Trenti, Michele
name: Stiavelli, Massimo
name: Shull, Michael
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: While the average metallicity of the intergalactic medium rises above Z~10^{-3} Zsun by the end of the reionization, pockets of metal-free gas can still exist at later times. We quantify the presence of a long tail in the formation rate of metal-free halos during late stages of reionization (redshift z~6), which might offer the best window to detect Population III stars. Using cosmological simulations for the growth of dark matter halos, coupled with analytical recipes for the metal enrichment of their interstellar medium, we show that pockets of metal-free gas exist at z~6 even under the assumption of high efficiency in metal pollution via winds. A comoving metal-free halo formation rate d^2n/dtdV > 10^{-9} Mpc^{-3}yr^{-1} is expected at z=6 for halos with virial temperature T_{vir}~10^4 K (mass ~10^8 Msun), sufficient to initiate cooling even with strong negative radiative feedback. Under the assumption of a single Population III supernova formed per metal-free halo, we expect an observed supernova rate of 2.6x10^{-3} deg^{-2}yr^{-1} in the same redshift range. These metal-free stars and their supernovae will be isolated and outside galaxies (at distances >150 h^{-1} kpc) and thus significantly less biased than the general population of ~10^8 Msun halos at z~6. Supernova searches for metal-free explosions must thus rely on large area surveys. If metal-free stars produce very luminous supernovae, like SN2006gy, then a multi-epoch survey reaching m_AB =27 at 1 micron is sufficient for detecting them at z=6. While the Large Synoptic Survey Telescope will not reach this depth in the z band, it will be able to detect several tens of Population III supernovae in the i and r bands at z <5.5, when their observed rate is down to 3-8x10^{-4} deg^{-2} yr^{-1}.
description: 25 pages, 6 figures, ApJ accepted, added references
How well can one resolve the state space of a chaotic map?
Creators: name: Lippolis, Domenico
name: Cvitanovic, Predrag
Publisher: name: arXiv
Year: 2009
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: All physical systems are affected by some noise that limits the resolution that can be attained in partitioning their state space. For chaotic, locally hyperbolic flows, this resolution depends on the interplay of the local stretching/contraction and the smearing due to noise. We propose to determine the `finest attainable' partition for a given hyperbolic dynamical system and a given weak additive white noise, by computing the local eigenfunctions of the adjoint Fokker-Planck operator along each periodic point, and using overlaps of their widths as the criterion for an optimal partition. The Fokker-Planck evolution is then represented by a finite transition graph, whose spectral determinant yields time averages of dynamical observables. Numerical tests of such `optimal partition' of a one-dimensional repeller support our hypothesis.
description: 4 pages, 3 postscript figures, uses revtex4; changed content
Publishing articles with integrity: a scenario
Creators: name: Hoogenraad, Hanna
Publisher: name: Zenodo
Year: 2023
Subjects: Integrity
Publishing
Peer review

description: This scenario describes a hypothetical case of editorial conflicts with publishing and peer review, and its confrontation with research integrity. It was developed for the course "Research Integrity" at the Graduate School of Humanities (Vrije Universiteit Amsterdam).
Manin Matrices, Quantum Elliptic Commutative Families and Characteristic Polynomial of Elliptic Gaudin Model
Creators: name: Rubtsov, Vladimir
name: Silantyev, Alexey
name: Talalaev, Dmitri
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In this paper we construct the quantum spectral curve for the quantum dynamical elliptic gl(n) Gaudin model. We realize it considering a commutative family corresponding to the Felder's elliptic quantum group and taking the appropriate limit. The approach of Manin matrices here suits well to the problem of constructing the generation function of commuting elements which plays an important role in SoV and Langlands concept.
Improvement of In Vitro Three-Dimensional Cartilage Regeneration by a Novel Hydrostatic Pressure Bioreactor
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2017
Subjects: Tissue engineering
Hydrostatic pressure
Bioreactor
In vitro
Three-dimensional cartilage regeneration

description: In vitro three-dimensional (3D) cartilage regeneration is a promising strategy for repair of cartilage defects. However, inferior mechanical strength and tissue homogeneity greatly restricted its clinical translation. Simulation of mechanical stress through a bioreactor is an important approach for improving in vitro cartilage regeneration. The current study developed a hydrostatic pressure (HP) bioreactor based on a novel pressure-transmitting mode achieved by slight deformation of a flexible membrane in a completely sealed stainless steel device. The newly developed bioreactor efficiently avoided the potential risks of previously reported pressure-transmitting modes and simultaneously addressed a series of important issues, such as pressure scopes, culture chamber sizes, sealability, contamination control, and CO2 balance. The whole bioreactor system realized stable long-term (8 weeks) culture under high HP (5-10 MPa) without the problems of medium leakage and contamination. Furthermore, the results of in vitro 3D tissue culture based on a cartilage regeneration model revealed that HP provided by the newly developed bioreactor efficiently promoted in vitro 3D cartilage formation by improving its mechanical strength, thickness, and homogeneity. Detailed analysis in cell proliferation, cartilage matrix production, and cross-linking level of collagen macromolecules, as well as density and alignment of collagen fibers, further revealed the possible mechanisms that HP regulated in vitro cartilage regeneration. The current study provided a highly efficient and stable bioreactor system for improving in vitro 3D cartilage regeneration and thus will help to accelerate its clinical translation. Stem Cells Translational Medicine 2017;6:982-991.
On burning regimes and long duration X-ray bursts
Creators: name: Keek, L.
name: Zand, J. J. M. in 't
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Hydrogen and helium accreted onto a neutron star undergo thermonuclear burning. Explosive burning is observed as a type I X-ray burst. We describe the different burning regimes and focus on some of the current inconsistencies between theory and observations. Of special interest are the rare kinds of X-ray bursts such as carbon-fueled superbursts and helium-fueled intermediately long X-ray bursts. These bursts are thought to originate deeper in the neutron star envelope, such that they are probes of the thermal properties of the crust. We investigate the possibility of observing superbursts with the wide-field instruments INTEGRAL-ISGRI and Swift-BAT. We find that only the brightest bursts are detectable.
description: Contributed talk to appear in the proceedings of the "7th INTEGRAL Workshop - An INTEGRAL View of Compact Objects", Copenhagen, Denmark, on 8-11 September 2008