cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Cascaded multiplexed optical link on a telecommunication network for frequency dissemination
Creators: name: Lopez, Olivier
name: Haboucha, Adil
name: Kéfélian, Fabien
name: Jiang, Haifeng
name: Chanteau, Bruno
name: Roncin, Vincent
name: Chardonnet, Christian
name: Amy-Klein, Anne
name: Santarelli, Georgio
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We demonstrate a cascaded optical link for ultrastable frequency dissemination comprised of two compensated links of 150 km and a repeater station. Each link includes 114 km of Internet fiber simultaneously carrying data traffic through a dense wavelength division multiplexing technology, and passes through two routing centers of the telecommunication network. The optical reference signal is inserted in and extracted from the communication network using bidirectional optical add-drop multiplexers. The repeater station operates autonomously ensuring noise compensation on the two links and the ultra-stable signal optical regeneration. The compensated link shows a fractional frequency instability of 3 \times 10-15 at one second measurement time and 5 \times 10-20 at 20 hours. This work paves the way to a wide dissemination of ultra-stable optical clock signals between distant laboratories via the Internet network.
Sharp theorems on multipliers and distances in harmonic function spaces in higher dimension
Creators: name: Arsenović, Miloš
name: Shamoyan, Romi F.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Complex Variables (math.CV)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 42B15 (Primary) 42B30 (Secondary)

description: We present new sharp results concerning multipliers and distance estimates in various spaces of harmonic functions in the unit ball of $R^n$.
description: 15 pages
Gains in Power from Structured Two-Sample Tests of Means on Graphs
Creators: name: Jacob, Laurent
name: Neuvial, Pierre
name: Dudoit, Sandrine
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Applications (stat.AP)
subject: FOS: Biological sciences
subject: FOS: Computer and information sciences

description: We consider multivariate two-sample tests of means, where the location shift between the two populations is expected to be related to a known graph structure. An important application of such tests is the detection of differentially expressed genes between two patient populations, as shifts in expression levels are expected to be coherent with the structure of graphs reflecting gene properties such as biological process, molecular function, regulation, or metabolism. For a fixed graph of interest, we demonstrate that accounting for graph structure can yield more powerful tests under the assumption of smooth distribution shift on the graph. We also investigate the identification of non-homogeneous subgraphs of a given large graph, which poses both computational and multiple testing problems. The relevance and benefits of the proposed approach are illustrated on synthetic data and on breast cancer gene expression data analyzed in context of KEGG pathways.
Portrait of Jason Sherman
Creators: name: Kelsey, Carleton
name: Amagansett Historical Association
Publisher: name: Unknown
Year: 0
Subjects: Amagansett
People
Portrait photographs
Men
Tintypes

description: This image shows Jason Sherman seated for a portrait. This photograph was either taken or collected by Amagansett historian and librarian Carleton Kelsey.
description: This photograph is part of the collection of the Carleton Kelsey Collection of the Amagansett Historical Association. Kelsey was a local historian and librarian who collected photographs from others to add to the many photographs he took of the community himself.
Dissolving Europe?
Creators: name: Eriksson, Birgit
Publisher: name: Akademisk kvarter | Academic Quarter
Year: 2017

description: When the performance Living Dead premiered in Denmark in 2016, its reception was characterized by an equal amount of praise and unease. Written and directed by Christian Lollike, Living Dead dealt with the increasing number of refugees coming to Europe from Africa and the Middle East. Controversially, it was a “horror performance” focusing on the fear, anxiety, and potential dissolution of Europe. The article examines the agency of the performance. How does it engage our senses and sensibilities? How does the affective and intensive elements of horror relate to the representation of the refugees? And how may the horror on stage affect our feelings and stance towards refugees outside the theatre – and relate to contemporary humanitarianism? In order to clarify these questions, I will use the analytics of mediation suggested by Lilie Chouliaraki (2006), Sianne Ngai’s theory of “ugly feelings” (2007), and Judith Butler’s reflections on the sensual dimensions of war (2009).
description: Akademisk kvarter | Academic Quarter, Art's Agency
Construction of some unimodular lattices with long shadow
Creators: name: Harada, Masaaki
Publisher: name: arXiv
Year: 2011
Subjects: subject: Combinatorics (math.CO)
subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: In this paper, we construct odd unimodular lattices in dimensions n=36,37 having minimum norm 3 and 4s=n-16, where s is the minimum norm of the shadow. We also construct odd unimodular lattices in dimensions n=41,43,44 having minimum norm 4 and 4s=n-24.
description: 17 pages, to appear in Int. J. Number Theory
What Literature Can Do
Creators: name: Lochner, Linani
Publisher: name: Akademisk kvarter | Academic Quarter
Year: 2017

description: Our affective response to works of literature, Derek Attridge argues in “Once more with feeling: art, affect and performance” (2011), is not “some mental simulacrum of affect, but a real feeling” (330) that replicates remembered experiences in the extra-literary domain. While reading, we feel these emotions “always as performances of language’s powers” (334) as we perform the literary work, bringing to life as events the “individual’s mental processes” – “the emotions, the mental and physical events, the apprehendings of the external world it depicts” (58). The affective response Zoë Wicomb’s October (2014) elicits in the reader, I argue in this essay, is also staged in the novel: like Mercia, who returns again and again to Marilynne Robinson’s Home, a novel she finds “Strangely familiar” (12), to reflect on ideas of home, her own conflicted relationship with her past in South Africa, and her present deracinated existence in Scotland, the reader of October feels the performative power of language in a novel that affectively unsettles complacent understandings of memory and belonging.
description: Akademisk kvarter | Academic Quarter, Art's Agency
Hawking radiation as tunneling from a Vaidya black hole in noncommutative gravity
Creators: name: Mehdipour, S. Hamid
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In the context of a noncommutative model of coordinate coherent states, we present a Schwarzschild-like metric for a Vaidya solution instead of the standard Eddington-Finkelstein metric. This leads to the appearance of an exact $(t - r)$ dependent case of the metric. We analyze the resulting metric in three possible causal structures. In this setup, we find a zero remnant mass in the long-time limit, i.e. an instable black hole remnant. We also study the tunneling process across the quantum horizon of such a Vaidya black hole. The tunneling probability including the time-dependent part is obtained by using the tunneling method proposed by Parikh and Wilczek in terms of the noncommutative parameter $σ$. After that, we calculate the entropy associated to this noncommutative black hole solution. However the corrections are fundamentally trifling; one could respect this as a consequence of quantum inspection at the level of semiclassical quantum gravity.
description: 19 pages, 5 figures
Bene docere. Problemi (e soluzioni) di didattica della letteratura russa a livello universitario
Creators: name: Marchesini, Irina
Publisher: name: Università degli Studi di Cagliari
Year: 2013

description: Vladimir Vladimirovič Nabokov fu indubbiamente uno degli attori principali nello scacchiere letterario internazionale; oltre alla figura di Nabokov scrittore non si deve però dimenticare quella di Nabokov professore. Questo aspetto, spesso marginalizzato dalla critica nabokoviana, merita uno sguardo più approfondito, poiché potrebbe stimolare una serie di interessanti riflessioni teoriche sull’insegnamento delle letterature, e in particolar modo quella russa. Nel presente contributo si farà riferimento soprattutto alla raccolta Lectures on Russian Literature (1981), risultato di un’operazione di collazione condotto da Fredson Bowers sugli appunti originali di Nabokov, che, come ebbe ad affermare in un’intervista, «fortunately took the trouble of writing one hundred lectures—about 2,000 pages — on Russian literature. [...] This kept me happy at Wellesley and Cornell for twenty academic years» (Strong Opinions, 1973: 5).
description: Between, Vol 3, N° 6 (2013): Insegnamenti. Per gli ottant'anni di Remo Ceserani
Development and Characterization of Orodispersible Film Containing Cefixime Trihydrate
Creators: name: Khan, Qurrat-ul-ain
name: Siddique, Muhammad Irfan
name: Rasool, Fatima
name: Naeem, Muhammad
name: Usman, Muhammad
name: Zaman, Muhammad
Publisher: name: Taylor & Francis
Year: 2020
Subjects: Biophysics
Biochemistry
Space Science
Medicine
Pharmacology
Biotechnology
Chemical Sciences not elsewhere classified
Biological Sciences not elsewhere classified
Cancer

description: Patients suffering from dysphagia have trouble in swallowing conventional oral dosage forms and there is also risk of choking, which may cause patient non-compliance. This study aimed to develop an orodispersible film (ODF) containing cefixime trihydrate (CFX) to cope with the above mentioned problems as well as to enhance water solubility and masking the bitter taste of the drug. The freeze-drying and kneading methods were used for the formation of inclusion complexes. The physicochemical evaluation revealed that T7 was the best film for the incorporation of pure drug and inclusion complexes. Films were further characterized for physical and mechanical properties. Drug content, dissolving time of the film and drug release test was performed. In-vivo taste and disintegration time studies were also conducted in healthy human volunteers. FTIR spectra of the individual ingredients and prepared formulations have confirmed the chemical compatibilities of the ingredients. The solubility of CFX was increased by complexation with β-CD and optimized freeze-dried inclusion complex (FD1) was selected for the formation of ODF. C4 was selected as an optimized film for the delivery of CFX as this film has released 95.52% drug at the end of 10 min. Dissolution kinetics of FD1 showed that it followed zero-order kinetics while drug release from films, exhibits first-order kinetics, however, both showed non-fickian transport. In-vivo taste evaluation revealed that taste was masked by inclusion complexation with β-CD. However, selected ingredients and employed methodology enabled to formulate film, capable of delivering taste-masked CFX with improved solubility and better patient compliance.
L’educazione letteraria: Appunti di un insegnante del XXI secolo
Creators: name: Bertoni, Federico
Publisher: name: Università degli Studi di Cagliari
Year: 2013

description: La prima cosa è guardarsi bene intorno. Tracciare le coordinate. Fare il punto. Solo qualche neopositivista incallito potrebbe contestare quello che ormai sembra un dato acquisito in tutti gli ambiti di studio: che il sapere è sempre situato, che non esiste una cultura neutrale, che ogni presa di parola è un gesto storico e politico calato in una specifica forma di vita, cioè la forma assunta dall’esperienza in un determinato contesto spazio-temporale.
description: Between, Vol 3, N° 6 (2013): Insegnamenti. Per gli ottant'anni di Remo Ceserani
On Automatic Database Management System Tuning Using Machine Learning
Creators: name: Van Aken, Dana
Publisher: name: Carnegie Mellon University
Year: 2021
Subjects: Applied Computer Science

description: Database management systems (DBMSs) are an essential component of any data-intensive application. But tuning a DBMS to perform well is a notoriously difficult task because they have hundreds of configuration knobs that control aspects of their runtime behavior, such as cache sizes and how frequently to flush data to disk. Getting the right configuration for these knobs is hard because they are not standardized (i.e., sets of knobs for different DBMSs vary), not independent (i.e., changing one knob may alter the effects of others), and not uniform (i.e., the optimal configuration depends on the target workload and hardware). Furthermore, as databases grow in both size and complexity, optimizing a DBMS to meet the needs of new applications has surpassed the abilities of even thebest human experts. Recent studies using machine learning techniques to automatically configure a DBMS’s knobs have shown that such techniques can produce high-quality configurations; however, they need a large amount of training data to achieve good results. Collecting this data is costly and time-consuming. In this thesis, we seek to address the challenge of developing effective yet practical techniques for the automatic configuration of DBMSs using machine learning. We show that leveraging knowledgegained from previous tuning efforts to assist in the tuning of others can significantly reduce the amount of time and resources needed to tune a DBMS for a new application.
Non-minimal kinetic coupling and Chaplygin gas cosmology
Creators: name: Granda, L. N.
name: Torrente-Lujan, E.
name: Fernandez-Melgarejo, J. J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In the frame of the scalar field model with non minimal kinetic coupling to gravity, we study the cosmological solutions of the Chaplygin gas model of dark energy. By appropriately restricting the potential, we found the scalar field, the potential and coupling giving rise to the Chaplygin gas solution. Extensions to the generalized and modified Chaplygin gas have been made.
description: 18 pages, 2 figures. To appear in EPJC
Shannon Entropy based Randomness Measurement and Test for Image Encryption
Creators: name: Wu, Yue
name: Noonan, Joseph P.
name: Agaian, Sos
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cryptography and Security (cs.CR)
subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: The quality of image encryption is commonly measured by the Shannon entropy over the ciphertext image. However, this measurement does not consider to the randomness of local image blocks and is inappropriate for scrambling based image encryption methods. In this paper, a new information entropy-based randomness measurement for image encryption is introduced which, for the first time, answers the question of whether a given ciphertext image is sufficiently random-like. It measures the randomness over the ciphertext in a fairer way by calculating the averaged entropy of a series of small image blocks within the entire test image. In order to fulfill both quantitative and qualitative measurement, the expectation and the variance of this averaged block entropy for a true-random image are strictly derived and corresponding numerical reference tables are also provided. Moreover, a hypothesis test at significance-level is given to help accept or reject the hypothesis that the test image is ideally encrypted/random-like. Simulation results show that the proposed test is able to give both effectively quantitative and qualitative results for image encryption. The same idea can also be applied to measure other digital data, like audio and video.
description: 23 Pages, 7 figures and 5 tables. Submitted to the Journal of Information Sciences
Women’s descriptive and substantive political representation : the role of political institutions.
Creators: name: Lore, Grace Alexandra
Publisher: name: University of British Columbia
Year: 2016

description: This dissertation explores how political institutions shape the behaviour of women in politics. It asks whether the relationship between the gender of representatives (descriptive representation) and the representation of women’s interests (substantive representation) depends on the institutional context. Using prominent institutional perspectives a theory is offered for how the division or fusion of powers and electoral systems affect substantive representation in both individual behaviour and policy outcomes. When party ties are weakened and internal party competition increased, women do more to substantively represent women, while men focus on other unincorporated interests. Institutions affect policy outcomes, not only by affecting individual behaviour but also by determining how those actions are aggregated. The theory is tested using a mixed methodological approach. Two datasets capture individual behaviour - an international survey of representatives and an original dataset examining representative’s tweets. The results demonstrate that the gap between substantive representation by women and that by men is larger under the conditions of a division of powers and when electoral systems incentives the representation of unincorporated interests. Interviews and surveys with more than 90 legislators from 7 countries provide evidence of the causal mechanisms. The aggregate effect of the number of women on gendered policy outcomes is tested using data combined from a range of sources. The findings results are equivocal: institutions that facilitate individual action can also make policy change more difficult. In short, institutions moderate the relationship between descriptive and substantive representation at the individual level and, to a lesser extent, at the aggregate level. This ‘institutionalist turn’ improves understanding of how, when, and why women act to represent women. The ‘gender turn’ in the study of institutions demonstrates the flexibility of the theories and the broad and consequential impact of institutions. There are implications that extend beyond gender to include other issues and identities not incorporated into the party system, such as ethnicity.
Additional file 4 of Gut bacterial metabolites modulate endoplasmic reticulum stress
Creators: name: Ke, Xiaobo
name: You, Kwontae
name: Pichaud, Matthieu
name: Haiser, Henry J.
name: Graham, Daniel B.
name: Vlamakis, Hera
name: Porter, Jeffrey A.
name: Xavier, Ramnik J.
Publisher: name: figshare
Year: 2021
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Mental Health
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 4. Review history.
On the absolute age of the Globular Cluster M92
Creators: name: Di Cecco, A.
name: Becucci, R.
name: Bono, G.
name: Monelli, M.
name: Stetson, P. B.
name: Degl'Innocenti, S.
name: Moroni, P. G. Prada
name: Nonino, M.
name: Weiss, A.
name: Buonanno, R.
name: Calamida, A.
name: Caputo, F.
name: Corsi, C. E.
name: Ferraro, I.
name: Iannicola, G.
name: Pulone, L.
name: Romaniello, M.
name: Walker, A. R.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present precise and deep optical photometry of the globular M92. Data were collected in three different photometric systems: Sloan Digital Sky Survey (g',r',i',z'; MegaCam@CFHT), Johnson-Kron-Cousins (B, V, I; various ground-based telescopes) and Advanced Camera for Surveys (ACS) Vegamag (F475W, F555W, F814W; Hubble Space Telescope). Special attention was given to the photometric calibration, and the precision of the ground-based data is generally better than 0.01 mag. We computed a new set of α-enhanced evolutionary models accounting for the gravitational settling of heavy elements at fixed chemical composition ([α/Fe]=+0.3, [Fe/H]=-2.32 dex, Y=0.248). The isochrones -- assuming the same true distance modulus (μ=14.74 mag), the same reddening (E(B-V)=0.025+-0.010 mag), and the same reddening law -- account for the stellar distribution along the main sequence and the red giant branch in different Color-Magnitude Diagrams (i',g'-i' ; i',g'-r' ; i',g'-z' ; I,B-I ; F814W,F475W-F814W). The same outcome applies to the comparison between the predicted Zero-Age-Horizontal-Branch (ZAHB) and the HB stars. We also found a cluster age of 11 +/- 1.5 Gyr, in good agreement with previous estimates. The error budget accounts for uncertainties in the input physics and the photometry. To test the possible occurrence of CNO-enhanced stars, we also computed two sets of α- and CNO-enhanced (by a factor of three) models both at fixed total metallicity ([M/H]=-2.10 dex) and at fixed iron abundance. We found that the isochrones based on the former set give the same cluster age (11 +/- 1.5 Gyr) as the canonical α-enhanced isochrones. The isochrones based on the latter set also give a similar cluster age (10 +/- 1.5 Gyr). These indings support previous results concerning the weak sensitivity of cluster isochrones to CNO-enhanced chemical mixtures.
description: This paper makes use of data obtained from the Isaac Newton Group Archive which is maintained as part of the CASU Astronomical Data Centre at the Institute of Astronomy, Cambridge. This research used the facilities of the Canadian Astronomy Data Centre operated by the National Research Council of Canada with the support of the Canadian Space Agency
The role of complement activation in age-related macular degeneration
Creators: name: Cao, Sijia
Publisher: name: University of British Columbia
Year: 2016

description: Purpose: Age-related macular degeneration (AMD) is a multifactorial degenerative disease that occurs in the central part of the retina − macula. The disease affects approximately one million Canadians and constitutes the number one cause of vision loss after cataract in the elderly. The Y402H polymorphism in the complement factor H (CFH) gene and drusen load are two salient risk factors for AMD. Little is known of the detailed cellular pathway(s) shared by these two factors. Here we investigate their interactions in in vitro models of AMD and in AMD samples. Methods: The biological samples came from 44 dry AMD patients, 23 postmortem eyes and retinal pigment epithelial (RPE) cell models. Drusen load and choroidal thickness in patients were measured using spectral-domain optical coherence tomography. We used analytical techniques including genotyping, Bio-Plex suspension assays, immunohistochemistry, immunofluorescence, reverse transcription PCR, Western blot, flow cytometry and lactate dehydrogenase assay Results: In dry AMD patients, higher systemic levels of interleukin (IL)-6, IL-18, and tumor necrosis factor (TNF)-α were associated with the at-risk CC variant of CFH Y402H polymorphism. IL-1β while not significant, demonstrated a similar trend. Drusen load was inversely correlated with choroidal thickness and visual acuity. Postmortem eyes genotyped with the Y402H risk variant showed significantly increased levels of GM-CSF in vitreous and immunoreactivity for CD68, C5a, IL-18 and TNF-α in Bruch’s membrane and/or choroid. Exposure to complement activation product C5a in RPE cells promoted NF-κB activation and upregulated inflammatory cytokines and growth factors. The drusen component, Aβ, induced complement activation and downregulated the membrane bound complement inhibitor, CD55, leading to sublytic MAC formation in RPE cells, which was inhibited by aurin tricarboxylic acid complex. Conclusion: Two important risk factors for AMD, CFH Y402H polymorphism and drusen load, both promote complement activation. Complement activation can mediate downstream events associated with sublytic changes in RPE, such as proinflammatory cytokine release. These results suggest that complement activation might be the central response to multiple risk factors and the complement activation products may further inflict injury on RPE cells. Complement activation products could be potential therapeutic targets to stop chronic inflammation in AMD.
Making Art as Resistance
Creators: name: Childers, Jodie
Publisher: name: Akademisk kvarter | Academic Quarter
Year: 2018

description: Examining 20th century “art brut” by James Edward Deeds, Martín Ramírez, Ovartaci, and Clément Fraisse produced within psychiatric facilities in America and Europe, this paper argues that these artists enacted transgressive creativity, not only aesthetically but through the materiality of their approaches, thereby resisting what sociologist Erving Goffman terms “total institutionalization.”
description: Akademisk kvarter | Academic Quarter, Art's Agency
Spin waves in the block checkerboard antiferromagnetic phase
Creators: name: Lu, Feng
name: Dai, Xi
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Motivated by the discovery of new family 122 iron-based superconductors, we present the theoretical results on the ground state phase diagram, spin wave and dynamic structure factor of the extended $J_{1}-J_{2}$ Heisenberg model. In the reasonable physical parameter region of $K_{2}Fe_{4}Se_{5}$, we fi{}nd the block checkerboard antiferromagnetic order phase is stable. There are two acoustic branches and six optical branches spin wave in the block checkerboard antiferromagnetic phase, which has analytic expression in the high symmetry points. To compare the further neutron scattering experiments, we discuss the saddlepoint structure in the magnetic excitation spectrum and calculate the predicted inelastic neutron scattering pattern based on linear spin wave theory.
Performing Sociology at a Music Festival
Creators: name: Halász, Katalin
Publisher: name: Akademisk kvarter | Academic Quarter
Year: 2017

description: The white woman has been a central figure in second wave feminism. Conceptualised variously as an embracing character allured by racial difference by Mica Nava (2007) or as a racist oppressor by Hazel Carby (1992) among others, she has emerged in various disguises which all point to her centrality in feminist and anti-racist movements. This article considers The Chamber of White, a video performance that reconfigures this historical figure in contemporary relations. It explores how the performance enables an affective experience of white femininities by inviting audience members to engage in different affective states. The question is discussed how to do sociology – a sociological research on whiteness and gender– through the intensive, the performative and affective dimensions of art. It is argued that the performance expands on the concept of “live sociology” (Back and Puwar 2012), whereby through doing an artful sociology the affective and sensory aspects of sociality are not simply reflected but enacted in order to critically examine the affective power of whiteness in a feminist context.
description: Akademisk kvarter | Academic Quarter, Art's Agency
The Work of Art
Creators: name: Tygstrup, Frederik
Publisher: name: Akademisk kvarter | Academic Quarter
Year: 2017

description: The modern idea of art has been in place for about two centuries. It has concurred with two other features of modernity: that of developed capitalist economy, and that of the new democratic public sphere. This article explores some of the relationships between art, capitalism and democracy. It argues that the notion of art heralded by modern aesthetic theories mainly hinges on the epistemic form of the commodity, highlighting the interaction between a producer, a product and a consumer. A different theorizing of the work of art could, however, depart not from the market place of commodities, but from the public forum for democratic deliberation. This alternative foundation of aesthetics is delineated on the basis of the anthropological idea of the ritual and its instantiation in contemporary theories of performativity, where the work of art is seen as an affordance for social encounters as well as for individual contemplation.
description: Akademisk kvarter | Academic Quarter, Art's Agency
Delay time distribution of type Ia supernovae: theory vs. observation
Creators: name: Mennekens, N.
name: Vanbeveren, D.
name: De Greve, J. P.
name: De Donder, E.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Two formation scenarios are investigated for type Ia supernovae in elliptical galaxies: the single degenerate scenario (a white dwarf reaching the Chandrasekhar limit through accretion of matter transferred from its companion star in a binary) and the double degenerate scenario (the inspiraling and merging of two white dwarfs in a binary as a result of the emission of gravitational wave radiation). A population number synthesis code is used, which includes the latest physical results in binary evolution and allows to differentiate between certain physical scenarios (such as the description of common envelope evolution) and evolutionary parameters (such as the mass transfer efficiency during Roche lobe overflow). The thus obtained theoretical distributions of type Ia supernova delay times are compared to those that are observed, both in morphological shape and absolute number of events. The critical influence of certain parameters on these distributions is used to constrain their values. The single degenerate scenario alone is found to be unable in reproducing the morphological shape of the observational delay time distribution, while use of the double degenerate one (or a combination of both) does result in fair agreement. Most double degenerate type Ia supernovae are formed through a normal, quasi-conservative Roche lobe overflow followed by a common envelope phase, not through two successive common envelope phases as is often assumed. This may cast doubt on the determination of delay times by using analytical formalisms, as is sometimes done in other studies. The theoretical absolute number of events in old elliptical galaxies lies a factor of at least three below the rates that are observed. While this may simply be the result of observational uncertainties, a better treatment of the effects of rotation on stellar structure could mitigate the discrepancy.
description: 5 pages, 4 figures, to appear in proceedings of "Binary Star Evolution: Mass Loss, Accretion, and Mergers"
How is an Art Work an Agent?
Creators: name: Felski, Rita
Publisher: name: Akademisk kvarter | Academic Quarter
Year: 2017

description: A brief reflection on recent theories of art works as agents and a response to the essays published in this issue.
description: Akademisk kvarter | Academic Quarter, Art's Agency
Sigma, tau and Abelian functions of algebraic curves
Creators: name: Eilbeck, J. C.
name: Enolski, V. Z.
name: Gibbons, J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Algebraic Geometry (math.AG)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 37K20, 14H55, 14K25

description: We compare and contrast three different methods for the construction of the differential relations satisfied by the fundamental Abelian functions associated with an algebraic curve. We realize these Abelian functions as logarithmic derivatives of the associated sigma function. In two of the methods, the use of the tau function, expressed in terms of the sigma function, is central to the construction of differential relations between the Abelian functions.
description: 25 pages
Operator Counting and Eigenvalue Distributions for 3D Supersymmetric Gauge Theories
Creators: name: Gulotta, Daniel R.
name: Herzog, Christopher P.
name: Pufu, Silviu S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We give further support for our conjecture relating eigenvalue distributions of the Kapustin-Willett-Yaakov matrix model in the large N limit to numbers of operators in the chiral ring of the corresponding supersymmetric three-dimensional gauge theory. We show that the relation holds for non-critical R-charges and for examples with {\mathcal N}=2 instead of {\mathcal N}=3 supersymmetry where the bifundamental matter fields are nonchiral. We prove that, for non-critical R-charges, the conjecture is equivalent to a relation between the free energy of the gauge theory on a three sphere and the volume of a Sasaki manifold that is part of the moduli space of the gauge theory. We also investigate the consequences of our conjecture for chiral theories where the matrix model is not well understood.
description: 27 pages + appendices, 5 figures
Relaxation of Optically Excited Carriers in Graphene
Creators: name: Kim, Raseong
name: Perebeinos, Vasili
name: Avouris, Phaedon
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We explore the relaxation of photo-excited graphene by solving a transient Boltzmann transport equation with electron-phonon (e-ph) and electron-electron (e-e) scattering. Simulations show that when the excited carriers are relaxed by e-ph scattering only, a population inversion can be achieved at energies determined by the photon energy. However, e-e scattering quickly thermalizes the carrier energy distributions washing out the negative optical conductivity peaks. The relaxation rates and carrier multiplication effects are presented as a function of photon energy and dielectric constant.
description: 4 pages, 4 figures
Wannier-Function based Scattering-Matrix Formalism for Photonic Crystal Circuitry
Creators: name: Hermann, Daniel
Publisher: name: Karlsruhe
Year: 2008
Subjects: Electromagnetism
Nanophotonics
Photonic Crystals

description: In this dissertation, I develop and investigate in detail a scattering-matrix approach for the efficient treatment of Photonic Crystal circuits and demonstrate its applicability to large-scale 2D circuits. The approach relies on the efficient calculation of the scattering matrices of basic functional elements using an expansion of fields into photonic Wannier functions, which represent a basis ideally suited to describe localized fields within defect structures in Photonic Crystals.
Development and characterization of orodispersible film containing cefixime trihydrate
Creators: name: Khan, Qurrat-ul-ain
name: Siddique, Muhammad Irfan
name: Rasool, Fatima
name: Naeem, Muhammad
name: Usman, Muhammad
name: Zaman, Muhammad
Publisher: name: Taylor & Francis
Year: 2020
Subjects: Biophysics
Biochemistry
Space Science
Medicine
Pharmacology
Biotechnology
Chemical Sciences not elsewhere classified
Biological Sciences not elsewhere classified
Cancer

description: Patients suffering from dysphagia have trouble in swallowing conventional oral dosage forms and there is also risk of choking, which may cause patient noncompliance. This study aimed to develop an orodispersible film (ODF) containing cefixime trihydrate (CFX) to cope with the above-mentioned problems as well as to enhance water solubility and masking the bitter taste of the drug. The freeze-drying and kneading methods were used for the formation of inclusion complexes. The physicochemical evaluation revealed that T7 was the best film for the incorporation of pure drug and inclusion complexes. Films were further characterized for physical and mechanical properties. Drug content, dissolving time of the film and drug release tests were performed. In vivo taste and disintegration time studies were also conducted in healthy human volunteers. FTIR spectra of the individual ingredients and prepared formulations have confirmed the chemical compatibilities of the ingredients. The solubility of CFX was increased by complexation with β-CD and optimized freeze-dried inclusion complex (FD1) was selected for the formation of ODF. C4 was selected as an optimized film for the delivery of CFX as this film has released 95.52% drug at the end of 10 min. Dissolution kinetics of FD1 showed that it followed zero-order kinetics while drug release from films, exhibits first-order kinetics; however, both showed non-Fickian transport. In vivo taste evaluation revealed that taste was masked by inclusion complexation with β-CD. However, selected ingredients and employed methodology enabled to formulate film, capable of delivering taste-masked CFX with improved solubility and better patient compliance.
Remotely sensed image time series to inform on forest structure and post-disturbance recovery over Canadian boreal forests
Creators: name: Frazier, Ryan James
Publisher: name: University of British Columbia
Year: 2016

description: Over the last century Canadian boreal forests have warmed by 2-3° C, causing growing seasons to lengthen and alterations to annual productivity, which result in numerous responses from boreal tree species. Both disturbance and recovery cycles are affected, although change in northern Canadian boreal forests is difficult to detect, since they remain non-inventoried and lack detailed spatially explicit descriptive data. Through the use of Landsat time series, remote sensing offers the ability to map and monitor large forested areas over time to provide valuable information about boreal forests. The overall objective of this dissertation is to assess the capacity of remotely-sensed spectral time series to characterize forest recovery following disturbance in Canadian boreal forests. Major findings produced from the research presented in this dissertation show: • Boreal forest attributes are better estimated with Landsat time series metrics than single date information, and the inclusion of recovery metrics substantially improves accuracy • Choice of spectral index to monitor recovery is important, and the use of multiple spectral indexes can provide better and meaningful insights into forest recovery • The East/West division of the Boreal Shield ecozone is reinforced due differing spectral forest recovery trajectories that are suggestive of distinct recovery processes in each region. • Forest recovery rates are not fixed across the Boreal and Taiga Shield ecozones, with Taiga Shield spectral forest recovery rates showing a consistent positive trend, possibly indicating forests are recently recovering at an accelerated rate. The research presented in this dissertation advances the use of remote sensing to detect post-disturbance recovery in boreal forest ecosystems. Monitoring large forested areas such as the boreal for change is increasingly important as climatic conditions alter, and the spectral time series methods shown herein provide new tools to observe change in boreal forests. Future research directions are identified around first lengthening time series across longer periods of time, then extending these spectral time series approaches across jurisdictional lines in the pan-boreal region, and finally incorporating the data generated from these methods to be incorporated into carbon accounting frameworks.
Prozess-Gefüge-Eigenschafts-Beziehungen für das Urformen von Mikroproben
Creators: name: Kasanická, Barbora
Publisher: name: Karlsruhe
Year: 2008
Subjects: Zirkoniumoxid
Dentalgoldlegierung Stabilor G
Mikroguss
Druckloses Heißgießen
Eigenspannungen

description: In dieser Arbeit wurden das Gefüge, die Oberflächentopographie und die Eigenspannungszustände von urgeformten Mikroproben aus Zirkoniumoxid und einer Dentalgoldlegierung untersucht. Die Untersuchungsergebnisse wurden für den jeweiligen Werkstoff mit den mikromechanischen Kennwerten in Form eines Gefüge-Eigenschafts-Modells zusammengefasst. Dieses ermöglicht mittels Optimierung des durch den Herstellprozess eingestellten Gefüges das Erreichen der gewünschten Festigkeitswerte der Mikroproben.
Frank Sherman
Creators: name: Kelsey, Carleton
name: Amagansett Historical Association
Publisher: name: Unknown
Year: 0
Subjects: Amagansett
People
Men

description: This image shows Frank Sherman at 18 years old posing next to a tree. He has a hat on that might be featuring metals. This photograph was either taken or collected by Amagansett historian and librarian Carleton Kelsey. Date is estimated from the attire worn in photo.
description: This photograph is part of the collection of the Carleton Kelsey Collection of the Amagansett Historical Association. Kelsey was a local historian and librarian who collected photographs from others to add to the many photographs he took of the community himself.
Impacts of Collective Neutrino Oscillations on Supernova Explosions
Creators: name: Suwa, Yudai
name: Kotake, Kei
name: Takiwaki, Tomoya
name: Liebendoerfer, Matthias
name: Sato, Katsuhiko
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: By performing a series of one- and two-dimensional (1-, 2D) hydrodynamic simulations with spectral neutrino transport, we study possible impacts of collective neutrino oscillations on the dynamics of core-collapse supernovae. To model the spectral swapping which is one of the possible outcome of the collective neutrino oscillations, we parametrize the onset time when the spectral swap begins, the radius where the spectral swap occurs, and the threshold energy above which the spectral interchange between heavy-lepton neutrinos and electron/anti-electron neutrinos takes place, respectively. By doing so, we systematically study how the neutrino heating enhanced by the spectral swapping could affect the shock evolution as well as the matter ejection. We also investigate the progenitor dependence using a suite of progenitor models (13, 15, 20, and 25 $M_\odot$). We find that there is a critical heating rate induced by the spectral swapping to trigger explosions, which significantly differs between the progenitors. The critical heating rate is generally smaller for 2D than 1D due to the multidimensionality that enhances the neutrino heating efficiency. For the progenitors employed in this paper, the final remnant masses are estimated to range in 1.1-1.5$M_\odot$. For our 2D model of the $15M_\odot$ progenitor, we find a set of the oscillation parameters that could account for strong supernova explosions ($\sim 10^{51}$ erg), simultaneously leaving behind the remnant mass close to $\sim 1.4 M_\odot$.
description: accepted for publication in ApJ; 14 pages, 18 figures; quality of some figures reduced
Identity Management in Business Process Modelling: A Model-Driven Approach
Creators: name: Klarl, Heiko
name: Wolff, Christian
name: Emig, Christian
Publisher: name: Karlsruhe
Year: 2009

description: The modelling of business processes is widely used in enterprises. Though this is very common,
requirements for identity management and access control are often collected separately in
documents or requirement tools. Due to the business-driven background of access control, this kind
of requirement should be collected at the business site's business process model. This work
introduces a meta-model for modelling access control requirements at the business process level. It
combines the model and its requirements, reducing the risk of inconsistencies caused by process
changes. A model-driven development process utilises the enriched models for generating policies
for different identity management products.
Search-based Plan Reuse in Self-* Systems
Creators: name: Kinneer, Cody
Publisher: name: Carnegie Mellon University
Year: 2021
Subjects: subject: 80309 Software Engineering
subject: FOS: Computer and information sciences

description: Increasingly software systems operate in environments of change and uncertainty, where the system's ability to satisfy its quality objectives depends on its ability to adapt. Self-adaptation allows these systems to manage this challenge by autonomously adapting to changes in their environments. While self-* systems are designed precisely to manage uncertainty, unexpected changes may violate design assumptions, resulting in the system failing to satisfy its quality attribute requirements. When this occurs, the planner must generate a new plan, an expensive operationfor large systems. As autonomous systems increase in size, interconnectedness, and complexity, this cost can quickly become prohibitive. This thesis addresses this problem by leveraging information contained in prior plans to reduce the replanning necessary to respond to an unexpected change. Even in the face of an unexpected change, some of the insights contained in existing plans are likely to remain applicable. For example, an autonomous aerial vehicle encountering an unexpected obstacle will need to replan to avoid the obstacle, but the drone may be able to return to its prior plan after this maneuver. A larger change willreduce the amount of reuse that is possible, for example changing the drone's mission to fly to a new location, but still, the takeoff and landing procedures may be reused. This thesis reuses existing adaptation plans by seeding a genetic algorithm with these plans. This enables a scalableself-* planner that can replan in complex systems with large search spaces. While the idea of plan reuse is intuitive, in practice plan reuse is difficult and may even be worse than replanning from scratch if not performed carefully. This dissertation provides reuse enhancing approaches to reduce the evaluation time of candidate plans, an approach for building reusable repertoires of plans and identifying generalizable plan fragments, and a co-evolutionary extension to enable plan reuse for security. The thesis is evaluated on three simulated case study systems, including a cloud-based web service provider, a team of autonomous aerial vehicles, and an enterprise business system under a cyber attack. Ultimately, plan reuse will enable large self-* systems to replan even after unexpected changes.
Kødets performativitet i kunst og teori
Creators: name: Heinrich, Falk
Publisher: name: Akademisk kvarter | Academic Quarter
Year: 2010

description: Falk Heinrichs Kødets performativitet i kunst og teori (The performativity of flesh in art and theory). The article is an analysis of the function and meaning of living flesh in performative art and the connected art theory about performative aesthetics. The article meditates about flesh as materiality, action and concepts based on Marian Abramovic's reenactment of various canonized 'body art'-works titled '7 Easy Pieces' re-performed in 2004. This 'academic' meditation is supported by key concepts in the research discourse of performativity with the aim of distilling various aspects of flesh in artistic practice and theory.
description: Akademisk kvarter | Academic Quarter, Kød | Flesh, Vol 01