cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Open-world Object Detection and Tracking
Creators: name: Dave, Achal
Publisher: name: Carnegie Mellon University
Year: 2021
Subjects: subject: 80104 Computer Vision
subject: FOS: Computer and information sciences

description: Computer vision today excels at recognizing narrow slices of the real world: our models seem to accurately detect objects like cats, cars, or chairs in benchmark datasets. However, deploying models requires that they work in the open world, which includes arbitrary objects in diverse settings.Current methods struggle on both axes: they recognize only a few classes, and struggle in settings that differ from the training distribution. A model that addresses these challenges can serve as a fundamental building blockfor downstream applications, including recognizing actions, manipulating objects, and navigating around obstacles. This thesis presents our work in building robust models for detecting and tracking any object, especially ones with few or even no training examples. We start by exploring how traditional models, which recognize only a small set of object classes, generalize to the real world. We show that currentmethods are extremely sensitive: even subtle changes in the input image or test distribution can lead to drops in accuracy. Our systematic evaluations show that models — even ones trained for robustness to adversarial or synthetic corruptions — often correctly classify one frame of a video, but fail on a perceptually similar nearby frame. A similar phenomenon applies even to small distribution shifts arising from natural variation between datasets. Finally, we present an approach for addressing an extreme form of generalization to object appearance: detecting fully occluded objects. Next, we explore generalization to large or infinite vocabularies, whichcontain rare and never-before-seen classes. Since current datasets are largely limited to a small, closed-world set of objects, we first present a large vocabulary benchmark for measuring progress in detection and tracking. We show that current evaluations do not suffice for large vocabulary benchmarks, and present alternative metrics that appropriately evaluate progress in this setting. Finally, we present approaches which leverage advances in closed-world recognition to build accurate, generic detectors and trackers for any object.
Measuring turbulence in the ISM by comparing N(HI;Lya) and N(HI;21cm)
Creators: name: Wakker, Bart P.
name: Lockman, Felix J.
name: Brown, Jonathan M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a study of the small-scale structure of the interstellar medium in the Milky Way. We used HST STIS data to measure N(HI) in a pencil-beam toward 59 AGNs and compared the results with the values seen at 9 arcmin - 36 arcmin resolution in the same directions using radio telescopes (GBT, Green Bank 140-ft and LAB survey). The distribution of ratios N(Lya)/N(HI) has an average of 1 and a dispersion of about 10%. Our analysis also revealed that spectra from the Leiden-Argentina-Bonn (LAB) all-sky HI survey need to be corrected, taking out a broad gaussian component (peak brightness temperature 0.048 K, FWHM 167 km/s, and central velocity -22 km/s). The column density ratios have a distribution showing similarities to simple descriptions of hierarchical structure in the neutral ISM, as well as to a more sophisticated 3D MHD simulation. From the comparison with such models, we find that the sonic Mach number of the local ISM should lie between 0.6 and 0.9. However, none of the models yet matches the observed distribution in all details, but with many more sightlines (as will be provided by COS) our approach can be used to constrain the properties of interstellar turbulence.
description: 55 pages, 8 figures, Accepted by ApJ
Approximate KMS states for scalar and spinor fields in Friedmann-Robertson-Walker spacetimes
Creators: name: Dappiaggi, Claudio
name: Hack, Thomas-Paul
name: Pinamonti, Nicola
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We construct and discuss Hadamard states for both scalar and Dirac spinor fields in a large class of spatially flat Friedmann-Robertson-Walker spacetimes characterised by an initial phase either of exponential or of power-law expansion. The states we obtain can be interpreted as being in thermal equilibrium at the time when the scale factor a has a specific value a=a_0. In the case a_0=0, these states fulfil a strict KMS condition on the boundary of the spacetime, which is either a cosmological horizon, or a Big Bang hypersurface. Furthermore, in the conformally invariant case, they are conformal KMS states on the full spacetime. However, they provide a natural notion of an approximate KMS state also in the remaining cases, especially for massive fields. On the technical side, our results are based on a bulk-to-boundary reconstruction technique already successfully applied in the scalar case and here proven to be suitable also for spinor fields. The potential applications of the states we find range over a broad spectrum, but they appear to be suited to discuss in particular thermal phenomena such as the cosmic neutrino background or the quantum state of dark matter.
description: 42 pages
Robotic Manipulation Primitives
Creators: name: Huang, Eric
Publisher: name: Carnegie Mellon University
Year: 2021
Subjects: subject: 91302 Automation and Control Engineering
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The central theme in robotic manipulation is that of the robot interacting with the world through physical contact. We tend to describe that physical contact using specific words that capture the nature of the contact and the action, such as grasp, roll, pivot, push, pull, tilt, close, open etc. We refer to these situation-specific actions as manipulation primitives. Due to the nonlinear and nonsmooth nature of physicalinteraction, roboticists have devoted significant efforts towards studying individual manipulation primitives.This thesis begins with the study of pulling and pushing primitives. First, we derive exact bounds on the motion of a pulling object and use these bounds to plan pulling trajectories which guarantee convergence. Second, we show that largescale multi-object rearrangement is achievable using only simple pushing primitives. However, in spite of the close relation between pushing and pulling, the required engineering effort within each project limited our ability to generalize across projects or to new scenarios.This limitation motivates the main contribution of this thesis. We contribute a complete and general framework to autogenerate manipulation primitives. To do so, we develop the theory and computation of contact modes as a means to classify and enumerate manipulation primitives. The contact modes form a graph, specifically a lattice. Our algorithm to autogenerate manipulation primitives performs graphsearchon the contact mode lattice and solves a quadratic program to generate each primitive. We hope that our contributions will lead to more general approaches for robotic manipulation.
Su Dimenticare Pasolini di Pierpaolo Antonello
Creators: name: Fusillo, Massimo
Publisher: name: Università degli Studi di Cagliari
Year: 2013

description: A più riprese, durante la lettura di Dimenticare Pasolini, ho avuto la piacevole sensazione di trovare stampato qualcosa che ho pensato e detto più volte. Antonello smonta sistematicamente alcuni stereotipi della vulgata culturale italiana, in particolare di un certo conformismo di sinistra: l’idea che la televisione sia all’origine di tutti i mali, il lamento apocalittico sul presente, la visione dei mass media e delle innovazioni tecnologiche come strumenti di pura conservazione. È un libro provocatorio fin dal titolo, quindi molto adatto ad aprire una discussione, ma per nulla ad effetto, anzi fin troppo serio e documentato.
description: Between, Vol 3, N° 6 (2013): Insegnamenti. Per gli ottant'anni di Remo Ceserani
Soft capacitor fibers using conductive polymers for electronic textiles
Creators: name: Gu, Jian Feng
name: Gorgutsa, Stephan
name: Skorobogatiy, Maksim
Publisher: name: arXiv
Year: 2010
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A novel, highly flexible, conductive polymer-based fiber with high electric capacitance is reported. In its crossection the fiber features a periodic sequence of hundreds of conductive and isolating plastic layers positioned around metallic electrodes. The fiber is fabricated using fiber drawing method, where a multi-material macroscopic preform is drawn into a sub-millimeter capacitor fiber in a single fabrication step. Several kilometres of fibers can be obtained from a single preform with fiber diameters ranging between 500um -1000um. A typical measured capacitance of our fibers is 60-100 nF/m and it is independent of the fiber diameter. For comparison, a coaxial cable of the comparable dimensions would have only ~0.06nF/m capacitance. Analysis of the fiber frequency response shows that in its simplest interrogation mode the capacitor fiber has a transverse resistance of 5 kOhm/L, which is inversely proportional to the fiber length L and is independent of the fiber diameter. Softness of the fiber materials, absence of liquid electrolyte in the fiber structure, ease of scalability to large production volumes, and high capacitance of our fibers make them interesting for various smart textile applications ranging from distributed sensing to energy storage.
Meet your inside
Creators: name: Olsén, Jan Eric
Publisher: name: Akademisk kvarter | Academic Quarter
Year: 2010

description: Jan Eric Olsén Meet your inside – endoscopic visualizations in contemporary culture. Visualizations of the body have increasingly become the primary interface between physicians and patients. CT, MRI, PET, ultrasound, scintigraphy, laparoscopy, the list is long of the imaging technologies utilized in hospitals and clinics today. This article deals with the visualization technique described by Bordowitz, namely endoscopy. Since endoscopy is based on the visual examination of the body as such, the shift towards external mediation creates an emotional tension between our embodied sense of corporeal interiority and the live images of soft tissues projected onto TV monitors and computer screens. Drawing on the work of visual cultural scholars such as José van Dijck and Tom Gunning (van Dijck, 2005; Gunning; 2003), the article argues that the technological visualization of the inner flesh yields an estranged relation between what we see on the screen and our unseen insides. The effect of different endoscopic technologies on our perception of the inner body is illustrated with examples from clinical medicine and performance art.
description: Akademisk kvarter | Academic Quarter, Kød | Flesh, Vol 01
Kødets fristelser
Creators: name: Christiansen, Steen
Publisher: name: Akademisk kvarter | Academic Quarter
Year: 2010

description: Steen Christiansens Kødets fristelser. (Temptations of the flesh). In its analysis of the softcore and pin-up-website suicidegirls.com and with a point of departure in tattoos, piercings and other body modifications the article discusses flesh as an object in the context of gender research, where gender is constructed socially. The models at suicidegirls.com negotiate with an earlier understanding of women through two processes: the creation of and the use of pinup photos and body modifications, so that a new concept of beauty is created, monster/beauty or monstrous beauty.
description: Akademisk kvarter | Academic Quarter, Kød | Flesh, Vol 01
Interpersonal triggers and cultural moderators of social identity threat
Creators: name: Hall, William M.
Publisher: name: University of British Columbia
Year: 2016

description: Social identity threat has most often been examined as impairing academic achievement among female and minority students. But for those who successfully advance into graduate school and professional settings, social identity threat might continue to be triggered by ambiguously negative interactions with others. My goal was to investigate the experience of social identity threat among samples of professionals in the workplace and students training in STEM programs with the aim of identifying triggers of threat, contextual and interpersonal buffers against threat, and cognitive consequences. To do this I conducted a series of studies in which I explored two research questions: 1) What are the antecedents and consequences of social identity threat in STEM workplace conversations? 2) Do gender inclusive policies and/or a higher representation of women in a workplace reduce the experience of social identity threat in workplace conversations? I used a series of daily diary studies and an experiment to answer these questions. To test whether interpersonal experiences in STEM workplaces and graduate programs are a source of social identity threat for women, participants reported their interactions with colleagues using daily dairies over the course of two weeks. Across three samples, results of multilevel modeling revealed that: 1) women (but not men) reported greater daily experiences of social identity threat on days when their conversations with men (but not women) cued a lack of acceptance, and 2) these daily fluctuations of social identity threat predicted feelings of mental burnout, consistent with a capacity deficit model of social identity threat. The two workplace samples, along with an experiment with undergraduate engineers, were used to examine whether gender inclusive workplace policies and practice and/or a higher representation of women in a workplace relate to improved cross-sex interactions and reduced social identity threat for women in STEM settings. Results revealed that female engineers’ daily actual and anticipated experience of social identity threat was lower in companies perceived to have more gender inclusive policies, as mediated by more positive conversations with male colleagues. The implications for reducing social identity threat in naturalistic settings are discussed.
Equilibration in the Aftermath of the Lunar-Forming Giant Impact
Creators: name: Pahlevan, Kaveh
name: Stevenson, David
Publisher: name: arXiv
Year: 2010
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Simulations of the moon-forming impact suggest that most of the lunar material derives from the impactor rather than the Earth. Measurements of lunar samples, however, reveal an oxygen isotope composition that is indistinguishable from terrestrial samples, and clearly distinct from meteorites coming from Mars and Vesta. Here we explore the possibility that the silicate Earth and impactor were compositionally distinct with respect to oxygen isotopes, and that the terrestrial magma ocean and lunar-forming material underwent turbulent mixing and equilibration in the energetic aftermath of the giant impact. This mixing may arise in the molten disk epoch between the impact and lunar accretion, lasting perhaps 10^2-10^3 yr. The implications of this idea for the geochemistry of the Moon, the origin of water on Earth, and constraints on the giant impact are discussed.
description: 34 pages, 5 figures
Eros e bios: «Il sopravissuto» di Antonio Scurati
Creators: name: Benvenuti, Giuliana
Publisher: name: Università degli Studi di Cagliari
Year: 2013

description: L’articolo indaga il nodo tra politica e vita che sembra stretto da Scurati nel Sopravvissuto sulla scorta della filosofia di Nietzsche; sembra cioè che egli assuma la “volontà di potenza” come impulso umano fondamentale. Ciò significa che il romanzo è intenzionato a tratteggiare l’ombra oscura che tale nodo proietta: non quella che porta all’affermazione dell'espansione vitale degli individui e delle collettività; ma quella che indica come i conflitti più significativi del nostro tempo avranno come oggetto e come campo di battaglia il corpo vivente dell'uomo. Il conflitto generazionale che Il sopravvissuto mette in scena non può che contenere un alto tasso di violenza, se è vero che l’istituzione scolastica non è qui in grado – come non lo sono l’istituzione psichiatrica e quella poliziesca – di opporsi all’espressione pura, e quasi caricaturale, della potenza di una gioventù tanto sublime quanto tradita nelle proprie aspirazioni alla pienezza vitale.
description: Between, Vol 3, N° 6 (2013): Insegnamenti. Per gli ottant'anni di Remo Ceserani
Ada Smith
Creators: name: Kelsey, Carleton
name: Amagansett Historical Association
Publisher: name: Unknown
Year: 0
Subjects: Amagansett
People
Women
Portrait photographs
Portraits
Cabinet photographs

description: This portrait is of Ada Smith. 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.
Oplevelsesøkonomi uden kød på?
Creators: name: Jensen, Thessa
Publisher: name: Akademisk kvarter | Academic Quarter
Year: 2010

description: Thessa Jensens Oplevelsesøkonomi uden kød på? (Experience economy without any flesh?). This article describes some problems that arise in connection with the widespread use of project-based grants for the development of peripheral areas. The development of these areas is often done by so-called fiery souls, i.e. people who are willing to use their labour, time and money to develop something new. This effort is often shown in the form of experience economy. With Sønderholm dairy farm as a case the article describes how farming is caught between two systems: a disciplinary one of surveillance, in which governmental and EU support and sanctions control production, and the other system is experience economy with innovative storytelling. Participation in projects with consultants may prove to be a pitfall for the involved. The article also describes a positive case with the independently developed "The Green Van" in Lønstrup.
description: Akademisk kvarter | Academic Quarter, Kød | Flesh, Vol 01
Testing independence between discrete random variables
Creators: name: Zambom, Adriano Z.
name: Wang, Qing
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology

description: In this paper we develop a likelihood ratio test for independence between multivariate discrete random vectors whose components may be dependent or may have different marginal distributions. A special case that tests independence between two discrete random variables is also discussed. The model under the null hypothesis is constructed based on the marginal distributions of the random variables, while the model under the alternative is built by adding a common random effect which is not restricted to follow the same distribution as those of the other variables. The test statistic is shown to admit an asymptotic distribution of a weighted sum of chi-square random variables, each with one degree of freedom. In order to avoid the high computational cost of finding the parameters of the asymptotic distribution, a permutation-based procedure is introduced. It is shown in simulations that the permutation-based realization yields empirical level close to the nominal level, while achieving power comparable to or higher than that of existing competitors in the literature. The application of the test is illustrated with a real data set.
Supplementary Material from Absence of diagonal force constants in cubic Coulomb crystals
Creators: name: Andrews, Bartholomew
name: Conduit, Gareth
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Condensed Matter Physics
subject: FOS: Physical sciences
subject: 91308 Solid Mechanics
subject: FOS: Mechanical engineering

description: Supplementary material to accompany the main text.
Automating Discovery and Classification of Transients and Variable Stars in the Synoptic Survey Era
Creators: name: Bloom, J. S.
name: Richards, J. W.
name: Nugent, P. E.
name: Quimby, R. M.
name: Kasliwal, M. M.
name: Starr, D. L.
name: Poznanski, D.
name: Ofek, E. O.
name: Cenko, S. B.
name: Butler, N. R.
name: Kulkarni, S. R.
name: Gal-Yam, A.
name: Law, N.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The rate of image acquisition in modern synoptic imaging surveys has already begun to outpace the feasibility of keeping astronomers in the real-time discovery and classification loop. Here we present the inner workings of a framework, based on machine-learning algorithms, that captures expert training and ground-truth knowledge about the variable and transient sky to automate 1) the process of discovery on image differences and, 2) the generation of preliminary science-type classifications of discovered sources. Since follow-up resources for extracting novel science from fast-changing transients are precious, self-calibrating classification probabilities must be couched in terms of efficiencies for discovery and purity of the samples generated. We estimate the purity and efficiency in identifying real sources with a two-epoch image-difference discovery algorithm for the Palomar Transient Factory (PTF) survey. Once given a source discovery, using machine-learned classification trained on PTF data, we distinguish between transients and variable stars with a 3.8% overall error rate (with 1.7% errors for imaging within the Sloan Digital Sky Survey footprint). At >96% classification efficiency, the samples achieve 90% purity. Initial classifications are shown to rely primarily on context-based features, determined from the data itself and external archival databases. In the ~one year since autonomous operations, this discovery and classification framework has led to several significant science results, from outbursting young stars to subluminous Type IIP supernovae to candidate tidal disruption events. We discuss future directions of this approach, including the possible roles of crowdsourcing and the scalability of machine learning to future surveys such a the Large Synoptical Survey Telescope (LSST).
description: 43 pages, 13 figures, submitted to Publications of the Astronomical Society of the Pacific (PASP)
Svin – kvalitet og kontrol
Creators: name: Gjerløff, Anne Kathrine
name: Jensen, Tenna Vestergaard
Publisher: name: Akademisk kvarter | Academic Quarter
Year: 2010

description: A. K. Gjerløff og T. V. Jensen Svin – kvalitet og kontrol. (Pigs – quality and control). This article describes control measures and standardization processes in Danish pork production around 1900. The aim of the production was to create The Good Meat by rationalizing and standardising the body of the pig. Concomitant with this, theories about hygiene and microorganisms influenced veterinarian science, and professional meat control was gradually introduced. A historical analysis of the health and quality control of the slaughterhouses shows how demands about the meat together with economic and political agendas determined the character of the pig's body. Focus was on the thickness and qualities of fat, but rather based on economic than nutritional incentives. So ideals about the good pork were developed with a standardized presence of fat and absence of disease. These ideals were continued and can be found again in later body ideals – animal as well as human.
description: Akademisk kvarter | Academic Quarter, Kød | Flesh, Vol 01
Scattering of Woods-Saxon Potential in Schrodinger Equation
Creators: name: Arda, Altug
name: Aydogdu, Oktay
name: Sever, Ramazan
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The scattering solutions of the one-dimensional Schrodinger equation for the Woods-Saxon potential are obtained within the position-dependent mass formalism. The wave functions, transmission and reflection coefficients are calculated in terms of Heun's function. These results are also studied for the constant mass case in detail.
description: 14 pages
Knowles Smith, son of George L. Smith
Creators: name: Kelsey, Carleton
name: Amagansett Historical Association
Publisher: name: Unknown
Year: 0
Subjects: People
Men
Portraits
Portrait photographs
Cabinet photographs
Suits (Clothing)

description: This portrait is of Knowles Smith, son of George L. Smith, dressed in a dark suit and tie. 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.
Pay as you flow : measuring the slot machine zone with attentional dual tasks
Creators: name: Murch, William Spencer
Publisher: name: University of British Columbia
Year: 2016

description: Why do people seek out gambling activities? In addition to acknowledging the excitement or ‘rush’ that gambling provides, a contemporary hypothesis highlights escape from stress or other aversive mood states as a key motive for slot machine play and risk factor for gambling disorders. Anecdotal accounts tell of machine gamblers becoming fully immersed in gambling: losing track of time, failing to notice peripheral events, and thinking exclusively about the game. It has been argued that electronic gaming machines (EGMs, including slot machines) are inherently more harmful than other gambling forms, perhaps owing to their ability to immerse players in prolonged gambling sessions. In four studies, I investigated the subjective, behavioural and psychophysiological underpinnings of immersion during EGM play. Studies 1, 2 and 3 used a peripheral target detection task during EGM gambling in order to test the hypothesis that peripheral inattention predicts immersion and risk of problem gambling. Study 2 also examined a mind wandering probe task in relation to immersion during EGM gambling. Study 3 examined the effects of EGM “practice” on immersion and peripheral attention. Study 4 examined solitary versus joint gambling as a potential moderator of EGM immersion. In addition, studies 1, 2 and 4 recorded respiratory sinus arrhythmia, a physiological marker of the parasympathetic nervous system, as a potential predictor of immersion and gambling risk. My results showed that risk of problem gambling significantly predicted both peripheral inattention and subjective immersion during EGM use by regular gamblers, but that inattention was not directly related to immersion. A reliable parasympathetic withdrawal effect was found during EGM play on respiratory sinus arrhythmia, but this was not related to markers of immersion. Implications are considered for the development of problem gambling and responsible gambling practices.
Excel spectroscopic tools to visualize, analyze and manipulate remotely sensed data of planetary bodies. This work has been developed under the ASI-INAF agreement n. 2023-6-HH.0.
Creators: name: TOSI, Federico
name: COFANO, ALESSANDRA
name: PICCIONI, GIUSEPPE
Publisher: name: IAPS Roma
Year: 2023

description: Thanks to Alessandra Migliorini from whom, together with Federico Tosi, I received the first funds with which the seeds of these ideas were planted. This work has been developed under the ASI-INAF agreement n. 2023-6-HH.0.
description: This manual describes how to use an interactive Excel tool that provides a quick and easy way to visualize and manipulate laboratory spectroscopic data.
Delay-line-multiplexer-based distributed antenna channel sounders for indoor and outdoor microcellular environments
Creators: name: Ahmed, Md. Humayun
Publisher: name: University of British Columbia
Year: 2016

description: Distributed Antenna Systems (DAS) are increasingly used to implement wireless access networks that provide high capacity, high reliability, and tailored coverage in both indoor and outdoor microcell environments. The third-generation DAS that have recently emerged are based on massively distributed antennas connected by fibre to transceiver hubs linked via a high-speed backplane. Such systems can be: 1) configured to operate in a variety of operating modes from small cells to Distributed MIMO and 2) highly customized based upon the nature of the environments and the performance demands of the users. Successful deployment of future Distributed Antenna Systems will require channel characterizations that capture our knowledge and understanding of the propagation impairments that degrade the airlink performance in a form useful in simulation and design. The principal challenge of DAS channel measurements is the need to characterize the signals presented by a multiplicity of distributed antennas in an effective and efficient manner. Most DAS channel sounders that have been reported in the literature to date are either based upon a multi-channel measurement receiver or a single-channel receiver equipped with a multi-throw RF switch. Each carries significant penalties in terms of cost and/or performance. Here, we present an alternative scheme that uses relatively inexpensive fibre-optic excess delay lines inserted into a conventional DAS distribution hub in order to effectively stack or multiplex signals in time so they can be presented in sequence by a conventional channel sounder equipped with a single-channel receiver. The concept is generally applicable, with appropriate modification, to channel sounders based upon: 1) Vector Network Analyzers that are commonly used to characterize short-range indoor environments, and 2) stepping or sliding correlators that are commonly used to characterize small cells in outdoor environments. In each case, we have derived system design formulas that allow one to determine the excess delay required to provide adequate temporal separation between the individual channel responses and system error models that allow cross-talk and other effects that may be present in the fiber distribution hub to be characterized. Finally, we have demonstrated proof-of-concept implementations of both in laboratory, real-world indoor, and outdoor small cell environments.
Excitation of H$_2$ in photodissociation regions as seen by Spitzer
Creators: name: Habart, Emilie
name: Abergel, Alain
name: Boulanger, Francois
name: Joblin, Christine
name: Verstraete, Laurent
name: Compiègne, Mathieu
name: Forêts, Guillaume Pineau des
name: Bourlot, Jacques Le
Publisher: name: arXiv
Year: 2010
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present spectroscopic observations obtained with the infrared Spitzer Space Telescope, which provide insight into the H$_2$ physics and gas energetics in photodissociation Regions (PDRs) of low to moderate far-ultraviolet (FUV) fields and densities. We analyze data on six well known Galactic PDRs (L1721, California, N7023E, Horsehead, rho Oph, N2023N), sampling a poorly explored range of excitation conditions ($χ\sim 5-10^3$), relevant to the bulk of molecular clouds in galaxies. Spitzer observations of H$_2$ rotational lines are complemented with H$_2$ data, including ro-vibrational line measurements, obtained with ground-based telescopes and ISO, to constrain the relative contributions of ultraviolet pumping and collisions to the H$_2$ excitation. The data analysis is supported by model calculations with the Meudon PDR code. The observed column densities of rotationally excited H$_2$ are observed to be much higher than PDR model predictions. In the lowest excitation PDRs, the discrepancy between the model and the data is about one order of magnitude for rotational levels $J \ge $3. We discuss whether an enhancement in the H$_2$ formation rate or a local increase in photoelectric heating, as proposed for brighter PDRs in former ISO studies, may improve the data-model comparison. We find that an enhancement in the H$_2$ formation rates reduces the discrepancy, but the models still fall short of the data. This large disagreement suggests that our understanding of the formation and excitation of H$_2$ and/or of PDRs energetics is still incomplete. We discuss several explanations, which could be further tested using the Herschel Space Telescope
description: A&A in press
Factorizing $F$-matrices and the XXZ spin-1/2 chain: A diagrammatic perspective
Creators: name: Ateer, S. G. Mc
name: Wheeler, M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Using notation inherited from the six-vertex model, we construct diagrams that represent the action of the factorizing $F$-matrices associated to the finite length XXZ spin-1/2 chain. We prove that these $F$-matrices factorize the tensor $R^σ_{1... n}$ corresponding with elements of the permutation group. We consider in particular the diagram for the tensor $R^{σ_c}_{1... n}$, which cyclically permutes the spin chain. This leads us to a diagrammatic construction of the local spin operators $S_i^{\pm}$ and $S_i^{z}$ in terms of the monodromy matrix operators.
description: 26 pages, extra references added, typographical errors corrected
Radial Velocity Confirmation of a Binary Detected from Pulse Timings
Creators: name: Barlow, Brad N.
name: Dunlap, Bart H.
name: Clemens, J. Christopher
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: A periodic variation in the pulse timings of the pulsating hot subdwarf B star CS 1246 was recently discovered via the O-C diagram and suggests the presence of a binary companion with an orbital period of two weeks. Fits to this phase variation, when interpreted as orbital reflex motion, imply CS 1246 orbits a barycenter 11 light-seconds away with a velocity of 16.6 km/s. Using the Goodman spectrograph on the SOAR telescope, we decided to confirm this hypothesis by obtaining radial velocity measurements of the system over several months. Our spectra reveal a velocity variation with amplitude, period, and phase in accordance with the O-C diagram predictions. This corroboration demonstrates that the rapid pulsations of hot subdwarf B stars can be adequate clocks for the discovery of binary companions via the pulse timing method.
description: Accepted for publication in ApJ Letters; 5 pages, 2 figures, 3 tables; uses emulateapj
Thermische und photoinduzierte C−H-Funktionalisierung von Indol-Derivaten durch radikalische Cyclisierungs- und Additionsreaktionen
Creators: name: Schendera, Eva
Publisher: name: Universität Rostock
Year: 2020
Subjects: subject: 540 Chemistry & allied sciences

description: Es wurden durch Knüpfung neuer C−C-Bindungen komplexe indolhaltige Kohlenstoffgerüste aufgebaut, indem C-zentrierte Radikale erzeugt wurden. Die Generierung kann sowohl thermisch als auch photochemisch erfolgen, sodass in radikalischen Cyclisierungsreaktionen funktionalisierte Indolochinoline dargestellt wurden. Weiterhin wurde eine thermische und photoinduzierte radikalische Addition von 1H-Indolen mit tert-Butylnitrit entwickelt, in der in Abhängigkeit der Reaktionsbedingungen das Triazatruxen oder nach Methylenblau-sensibilisierter Photooxidation 2-Indolyl-3-oxim-3H-indole generiert wurden.
Editorial for the Art Style, Art & Culture International Magazine, no. 2
Creators: name: Wagner, Christiane
Publisher: name: Zenodo
Year: 2019
Subjects: Art, Culture, Magazine, Second Edition

description: Art Style | Art & Culture International Magazine Bauhaus Special Edition Although Bauhaus is relevant throughout history, this German school of art remains an open issue in art, architecture, design, and communication, addressing the following question: To what extent is Bauhaus even possible nowadays? Thus, this was our question for the Art Style Magazine's Bauhaus Special Edition. Therefore, in an attempt to showcase some of the most important issues so our readers can attain a broad notion of this German school's legacy, our Editorial Team has been working diligently and participated in several significant events, talks, round tables, and exhibitions. The opening festival and construction of the Bauhaus Museum in Weimar, for example, offered a great view of the importance of the Bauhaus. Above all, in the sense of arts and crafts in connection with industry, this school outlined a relationship of teaching design from product development, consumption to the changes of living together.
description: Art Style, Art & Culture International Magazine is an open-access, biannual, and peer-reviewed online magazine that aims to bundle cultural diversity. All values of cultures are shown in their varieties of art. Beyond the importance of the medium, form, and context in which art takes its characteristics, art is considered the significance of socio-cultural, historical, and market influence.
Current applications of organocatalysts in asymmetric aldol reactions: An update
Creators: name: Mommahed Heravi, Majid
name: Zadsirjan, Vahideh
name: Dehghani, Mahzad
name: Hosseintash, Nastaran
Publisher: name: figshare
Year: 2022
Subjects: subject: 30302 Nanochemistry and Supramolecular Chemistry
subject: FOS: Chemical sciences
subject: 30701 Quantum Chemistry
subject: 39904 Organometallic Chemistry
subject: Inorganic Chemistry
subject: 30599 Organic Chemistry not elsewhere classified
subject: 30502 Natural Products Chemistry
subject: 30205 Non-metal Chemistry
subject: Nuclear Chemistry
subject: 30504 Organic Green Chemistry
subject: 30799 Theoretical and Computational Chemistry not elsewhere classified
subject: 30303 Optical Properties of Materials

description: The aldol reaction is one of the most important carbon–carbon bond formations in synthetic organic chemistry. An enantioselective aldol reaction should provide an enantioenriched product. The organocatalytic asymmetric aldol reaction via an in situ generated enamine intermediate is one of the most powerful synthetic tools to achieve enantiomerically pure products. This approach is often used to obtain chiral β-hydroxycarbonyl compounds with excellent enantioselectivity. In this report, we update our previous review regarding the applications of organocatalysts in asymmetric aldol reactions leading to chiral β-hydroxycarbonyl compounds as versatile synthetic motifs frequently found in pharmaceutically desired intermediates and biologically active naturally occurring compounds.
Semiclassical short strings in AdS_5 x S^5
Creators: name: Beccaria, Matteo
name: Macorini, Guido
name: Tirziu, Alin
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present results for the one-loop correction to the energy of a class of string solutions in AdS_5 x S^5 in the short string limit. The computation is based on the observation that, as for rigid spinning string elliptic solutions, the fluctuation operators can be put into the single-gap Lame' form. Our computation reveals a remarkable universality of the form of the energy of short semiclassical strings. This may help to understand better the structure of the strong coupling expansion of the anomalous dimensions of dual gauge theory operators.
description: 12 pages, one pdf figure. Invited Talk at 'Nonlinear Physics. Theory and Experiment VI', Gallipoli (Italy) - June 23 - July 3, 2010
Natural rubber-clay nanocomposites: mechanical and structural properties
Creators: name: Rezende, Camila A.
name: Bragança, Fabio C.
name: Doi, Telma R.
name: Lee, Lay-Theng
name: Galembeck, Fernando
name: Boué, François
Publisher: name: arXiv
Year: 2010
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The mechanical properties of non-vulcanized natural rubber and dialyzed natural rubber-clay nanocomposites have been studied by uniaxial deformations to evaluate the reinforcement efficiency of the clay. We show that while non-rubber molecules contribute to auto-reinforcement, removal of these molecules improves significantly the performance of clay as reinforcement agent. These mechanical properties are discussed in relation to morphological aspects of the clay characterized by TEM and SANS. The nanocomposites prepared by "latex-mixing" with aqueous dispersions of clay are found to contain completely exfoliated clay lamellae in coexistence with tactoids. Improved mechanical properties of the nanocomposites can be modeled by the high aspect ratio of exfoliated clay platelets coupled with immobilized rubber matrix. Interestingly, presence of tactoids does not appear to compromise the excellent reinforcement properties of the exfoliated platelets. At high deformations, strain-induced alignment of the clay exhibits anisotropic scattering, with anisotropy increasing with clay concentration and stretching.
Cruising for Burgers
Creators: name: Knakkergaard, Martin
Publisher: name: Akademisk kvarter | Academic Quarter
Year: 2010

description: Martin Knakkergaard Cruising for Burgers – om kød og kødelighed i Frank Zappas Uncle Meat. (Cruising for burgers About flesh and corporeality in Frank Zappa's Uncle Meat). Frank Zappa's concept album and film script Uncle Meat from 1969 can be regarded as a key to his art, his view of society and his understanding of existence. In its concrete material Uncle Meat appears both textually and musically as a close pastiche put kaleidoscopically together from unique samples of especially rock, jazz, musique concrète, pop, electronic, and neoclassic, which in unison with lyrics based on a somewhat absurd imagery depict human alienation, debasement and reification. The article is an account of the universe of Uncle Meat consisting of descriptive analyses of a selection of the key and main elements of the work in order to uncover connections and collisions in music, lyrics and ideology. At the same time it is a deliberation of the relevance of Zappa's total oeuvre as prophetic dystopia.
description: Akademisk kvarter | Academic Quarter, Kød | Flesh, Vol 01
Calibrated Measurements of the Radio Emission of Cosmic Ray Air Showers
Creators: name: Nehls, Steffen
Publisher: name: Karlsruhe
Year: 2008
Subjects: Radio Emission
LOPES
Lateral Distribution
Amplitude Calibration
Antenna Array

description: The properties of the radio emission of EAS are investigated, in particular by reconstructing the lateral distribution of the emission on an event-by-event basis. With a performed amplitude calibration of the radio signals for each LOPES antenna the absolute value of the field strength is known. The obtained most probable value of the scale parameter results in R=125m. By comparisions with Monte Carlo simulations a systematically flatter lateral distribution was obtained for the measurements.
Kødet som abjekt hos Jane Austen
Creators: name: Christensen, Jørgen Riber
Publisher: name: Akademisk kvarter | Academic Quarter
Year: 2010

description: Jørgen Riber Christensens Kødet som abjekt hos Jane Austen: Pride and Prejudice and Zombies. (Flesh as abject in Jane Austen Pride and Prejudice and Zombies) en overraskende romanbestseller, hvori Jane Austens klassiske og populære roman er omskrevet ved tilføjelse af en zombieinvasion. The article examines how Seth Grahame-Smith's bestseller Pride and Prejudice and Zombies from 2009 has reformulated the repressed carnality and libido in Pride and Prejudice into a Thanatos drive, in which the zombies' cannibalistic urge for human flesh dominates the new version of the novel. The article seeks to answer three questions: What are zombies?, How and why have the nubile Bennett daughters been reformulated to zombie slayers par excellence? And what genre relationship has the novel to Jane Austen's Pride and Prejudice from 1813? The answers to the three questions are looked for in Julia Kristevas' theories about bodily abjects, the concept of action chicks and in Gérard Genette's textual typology.
description: Akademisk kvarter | Academic Quarter, Kød | Flesh, Vol 01
Chemical Fractionation in the Silicate Vapor Atmosphere of the Earth
Creators: name: Pahlevan, Kaveh
name: Stevenson, David
name: Eiler, John
Publisher: name: arXiv
Year: 2010
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Despite its importance to questions of lunar origin, the chemical composition of the Moon is not precisely known. In recent years, however, the isotopic composition of lunar samples has been determined to high precision and found to be indistinguishable from the terrestrial mantle despite widespread isotopic heterogeneity in the Solar System. In the context of the giant-impact hypothesis, this level of isotopic homogeneity can evolve if the proto-lunar disk and post-impact Earth undergo turbulent mixing into a single uniform reservoir while the system is extensively molten and partially vaporized. In the absence of liquid-vapor separation, such a model leads to the lunar inheritance of the chemical composition of the terrestrial magma ocean. Hence, the turbulent mixing model raises the question of how chemical differences arose between the silicate Earth and Moon. Here we explore the consequences of liquid-vapor separation in one of the settings relevant to the lunar composition: the silicate vapor atmosphere of the post-giant-impact Earth. We use a model atmosphere to quantify the extent to which rainout can generate chemical differences by enriching the upper atmosphere in the vapor, and show that plausible parameters can generate the postulated enhancement in the FeO/MgO ratio of the silicate Moon relative to the Earth's mantle. Moreover, we show that liquid-vapor separation also generates measurable mass-dependent isotopic offsets between the silicate Earth and Moon and that precise silicon isotope measurements can be used to constrain the degree of chemical fractionation during this earliest period of lunar history. An approach of this kind has the potential to resolve long-standing questions on the lunar chemical composition.
description: 48 pages, 6 figures, 2 tables
Control over Dimensionality and Magnetic Properties in Metal Complexes formed with Substituted Salicyl Ligands
Creators: name: Mukherjee, Sudarshana
Publisher: name: Karlsruhe
Year: 2008
Subjects: Magnetism
crystallography
single-molecule magnet
salicylic acid

description: The goal was to design and synthesise molecule-based materials, and characterise their magnetic behaviour. Homometallic mixed-valence manganese and heterometallic Fe-Ln coordination polymers, and discrete oligomeric complexes of Mn, Cu and Fe from substituted salicylic acids are presented. Detailed NMR studies of the synthesised Schiff base ligands and a comparision of the structure and properties of the resulting Mn(II) and Ni(II) complexes are also shown.
A-phyi Chos-kyi-sgrol-ma : Ritual text with musical notation for the propitiation of : Manuscript
Creators: name: (:Unav)
Publisher: name: Columbia University
Year: 2019
Subjects: Buddhist music--China
Buddhist chants--China
A-phyi Chos-kyi-sgrol-ma (Buddhist deity)--Cult--China
ʾBri-gung-pa (Sect)--Rituals
Buddhist chants
Buddhist music

description: Manuscript of musical notation for chanting (dbyangs yig) and horns (drung chen), etc. for propitiation (gsol mchod) of Achi Chokyi Drolma (Tib. A-phyi Chos-kyi-sgrol-ma), a protective deity for the Drikung Kagyu (Tib. ʾBri-gung Bkaʾ-brgyud) tradition of Tibetan Buddhism.