cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Clinical diagnostic computed tomography reference levels (DRLs) for adults and children at Hospital Italiano de Buenos Aires
Creators: name: García-Mónaco, Ricardo
Publisher: name: ESR EuroSafe Imaging
Year: 2019
Subjects: subject: Action 2 - Clinical diagnostic reference levels (DRLs)
subject: Action 3 - Image quality assessment based on clinical indications
subject: Radioprotection / Radiation dose
subject: CT
subject: Radiation safety
subject: Quality assurance

description: Background/introduction Description of activity and work performed Conclusion and recommendations Personal/organisational information References
description: Background/introduction: The diagnostic reference levels (DRLs) have been established for an efficient administration of the radiation dose and for the optimization of the acquisition technique. Historically the DRLs were developed by imaging study, but not related to the...
Structural Optimisation: Biomechanics of the Femur
Creators: name: Phillips, Andrew T. M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: A preliminary iterative 3D meso-scale structural model of the femur was developed, in which bar and shell elements were used to represent trabecular and cortical bone respectively. The cross-sectional areas of the bar elements and the thickness values of the shell elements were adjusted over successive iterations of the model based on a target strain stimulus, resulting in an optimised construct. The predicted trabecular architecture, and cortical thickness distribution showed good agreement with clinical observations, based on the application of a single leg stance load case during gait. The benefit of using a meso-scale structural approach in comparison to micro or macro-scale continuum approaches to predictive bone modelling was achievement of the symbiotic goals of computational efficiency and structural description of the femur.
description: Accepted by Engineering and Computational Mechanics (Proceedings of the ICE)
Towards an understanding of self-efficacy with using a manual wheelchair
Creators: name: Sakakibara, Brodie Masaru
Publisher: name: University of British Columbia
Year: 2013

description: Self-efficacy with using a manual wheelchair is the belief individuals have in their ability to use their wheelchair in challenging situations. It is a new construct that may have important implications on the health and well-being of wheelchair users, but has received minimal investigation. There is a need to develop an understanding of this construct in community-dwelling wheelchair users. Purpose: To investigate: the associations between self-efficacy, participation frequency (Chapter 2), and life-space mobility (Chapter 3); the health, personal, and environmental factors that predict self-efficacy (Chapter 4); and the measurement properties of the 65-item Wheelchair Use Confidence Scale (WheelCon) (Chapter 5). Methods: Multiple regression analyses were used to: examine the self-efficacy effects on participation frequency, measured using the Late-Life Disability Instrument, and life-space mobility, measured using the Life-Space Assessment; and develop a predictive model of self-efficacy, measured with the WheelCon, in a sample (n=124) of wheelchair users, ≥50 years old. Principal components analyses were used to evaluate the dimensionality of the WheelCon. Rasch analyses were used to examine the WheelCon’s item reliability in a sample (n=220) of wheelchair users, ≥19 years old. Results: Self-efficacy was a statistically significant predictor of participation frequency and life-space mobility, after controlling for important confounders. The association between self-efficacy and participation frequency was mediated by life-space mobility and perceived participation limitations. The association with life-space mobility was mediated by wheelchair skills. The models accounted for 55.0% and 39.0% of the participation frequency, and life-space mobility variance, respectively. Age, sex, need for a seating intervention, hours of daily wheelchair use, and formal training and assistance with wheelchair use were statistically significant predictors of self-efficacy. The model accounted for 44.0% of the self-efficacy variance. The WheelCon was found to be comprised of two dimensions. Several items were eliminated due to their non-compliance with the Rasch model. The 13-item mobility efficacy, 8-item self-management efficacy subscales, and the combined 21-item short form have good reliability, and provide accurate and precise measurements. Conclusion: Self-efficacy has important implications on the participation frequency and life-space mobility in community-dwelling wheelchair users, ≥50 years old. The construct may be assessed efficiently and precisely.
The Bethe approximation for solving the inverse Ising problem: a comparison with other inference methods
Creators: name: Ricci-Tersenghi, Federico
Publisher: name: arXiv
Year: 2011
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The inverse Ising problem consists in inferring the coupling constants of an Ising model given the correlation matrix. The fastest methods for solving this problem are based on mean-field approximations, but which one performs better in the general case is still not completely clear. In the first part of this work, I summarize the formulas for several mean- field approximations and I derive new analytical expressions for the Bethe approximation, which allow to solve the inverse Ising problem without running the Susceptibility Propagation algorithm (thus avoiding the lack of convergence). In the second part, I compare the accuracy of different mean field approximations on several models (diluted ferromagnets and spin glasses) defined on random graphs and regular lattices, showing which one is in general more effective. A simple improvement over these approximations is proposed. Also a fundamental limitation is found in using methods based on TAP and Bethe approximations in presence of an external field.
description: v3: strongly revised version with new methods and results, 25 pages, 21 figures
Gaia: a Window to Large Scale Flows
Creators: name: Nusser, Adi
name: Branchini, Enzo
name: Davis, Marc
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Using redshifts as a proxy for galaxy distances, estimates of the 2D transverse peculiar velocities of distant galaxies could be obtained from future measurements of proper motions. We provide the mathematical framework for analyzing 2D transverse motions and show that they offer several advantages over traditional probes of large scale motions. They are completely independent of any intrinsic relations between galaxy properties, hence they are essentially free of selection biases. They are free from homogeneous and inhomogeneous Malmquist biases that typically plague distance indicator catalogs. They provide additional information to traditional probes which yield line-of-sight peculiar velocities only. Further, because of their 2D nature, fundamental questions regarding vorticity of large scale flows can be addressed. Gaia for example is expected to provide proper motions of at least bright galaxies with high central surface brightness, making proper motions a likely contender traditional probes based on current and future distance indicator measurements.
description: matches published version
title: Over-ranging in CT scanners : comparison of equipment models and medical practices in France
Creators: name: ROUSSELLE, Isabelle
Publisher: name: ESR EuroSafe Imaging
Year: 2019
Subjects: subject: Action 9 - Facilitation of research in advanced topics of radiation protection
subject: Radioprotection / Radiation dose
subject: CT
subject: Dosimetry
subject: Physics
subject: Radiation safety
subject: Dosimetric comparison

description: Background/introduction Description of activity and work performed Conclusion and recommendations Personal/organisational information References
description: Background/introduction: Over the last decades, manufacturers of multi-slice CT scanners have invested tremendous efforts to maintain high image qualities while reducing patient exposure to ionizing radiation [1, 2, 3, 4]. Although various studies have proven lower patient...
Entwicklungsperspektiven der Bioenergiebranche im Vergleich zwischen unterschiedlich strukturierten Wirtschaftsräumen
Creators: name: Harsche, PD Dr. Johannes
name: Imelli, Birgit
name: Jaensch, Dr. Kerstin
Publisher: name: Bundesministerium für Ernährung und Landwirtschaft
Year: 2013

description: Ziel der vorgestellten Untersuchung ist es, räumlich differenzierte Erkenntnisse über die Struktur und die Standortanforderungen des Bioenergiesektors zu gewinnen sowie Anhaltspunkte für die weitere Entwicklung dieses Wirtschaftsbereiches aufzuzeigen. Auf der Grundlage des Cluster-Konzepts gliedert sich die Untersuchung in eine schriftliche Befragung von 560 Bioenergieunternehmen und eine mündliche Befragung über 20 leitfadengestützte Interviews mit Branchenexperten. Die Untersuchungsregionen bilden Südhessen, einer der wirtschaftsstärksten Zentralräume Europas, sowie Mittelhessen, das als typischer Zwischenraum Struktureigenschaften eines Zentralraums wie auch eines Peripherraums aufweist, und Nordhessen, das in weiten Teilen durch die Merkmale eines Peripherraums geprägt ist. Gemäß den Ergebnissen der schriftlichen Unternehmensbefragung ist die Bioenergiebranche überwiegend von kleinen und mittleren Unternehmen geprägt, die in unterschiedlichem Ausmaß auf Bioenergie spezialisiert sind. Bedeutende Standortfaktoren für den Bioenergiesektor sind unter anderem die Rohstoffverfügbarkeit, die Verkehrsanbindung wie auch die Nähe zu Lieferanten und die Nähe zu Kunden. Beispielsweise fällt die Bewertung der Verkehrsanbindung im südhessischen Zentralraum deutlich positiver aus als in den anderen Landesteilen. In Punkto Rohstoffverfügbarkeit liegen der mittelhessische Zwischenraum und der nordhessische Peripherraum jeweils trotz weiträumiger Agrarregionen und Waldgebiete hinter dem Zentralraum.Die befragten Unternehmen planen mehrheitlich Investitionen, gehen von steigenden Umsätzen aus und wollen teilweise die Beschäftigtenzahl erhöhen. Die gegenwärtige Situation der Bioenergiebranche bewertet ein bedeutender Teil der Befragten mit gut bis sehr gut. Für die Zukunft sieht sogar die Hälfte der Befragten gute bis sehr gute Perspektiven. Besonders optimistisch zeigen sich die Bioenergieunternehmen mit Standorten im Zentralraum.Die Ergebnisse der mündlichen Befragung weisen darauf hin, dass sich die Wertschöpfungsketten der Bioenergiebranche nach wie vor im Aufbau befinden. Entscheidende Hemmnisse für die Entwicklung der Bioenergiebranche sehen die Experten in der unzureichenden Verfügbarkeit der Rohstoffe wie auch den unsicheren politischen und gesetzlichen Rahmenbedingungen.
description: Berichte über Landwirtschaft - Zeitschrift für Agrarpolitik und Landwirtschaft, Band 91, Heft 2, August 2013
title: IAEA recomendations and resources for establishing and utilizing DRLs
Creators: name: Vassileva, Jenia
Publisher: name: ESR EuroSafe Imaging
Year: 2019
Subjects: subject: Action 2 - Clinical diagnostic reference levels (DRLs)
subject: Radioprotection / Radiation dose
subject: Radiation physics
subject: CT
subject: Conventional radiography
subject: Fluoroscopy
subject: Radiation safety
subject: Dosimetric comparison

description: Background/introduction Description of activity and work performed Conclusion and recommendations Personal/organisational information References
description: Background/introduction: The concept of national reference doses was first introduced in the United Kingdom in 1980s, after a national survey of doses from some common X-ray procedures [1]. The International Commission on Radiologic Protection (ICRP) introduced diagnostic...
Pippi - painless parsing, post-processing and plotting of posterior and likelihood samples
Creators: name: Scott, Pat
Publisher: name: arXiv
Year: 2012
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Interpreting samples from likelihood or posterior probability density functions is rarely as straightforward as it seems it should be. Producing publication-quality graphics of these distributions is often similarly painful. In this short note I describe pippi, a simple, publicly-available package for parsing and post-processing such samples, as well as generating high-quality PDF graphics of the results. Pippi is easily and extensively configurable and customisable, both in its options for parsing and post-processing samples, and in the visual aspects of the figures it produces. I illustrate some of these using an existing supersymmetric global fit, performed in the context of a gamma-ray search for dark matter. Pippi can be downloaded and followed at http://github.com/patscott/pippi .
description: 4 pages, 1 figure. v3: Updated for pippi 2.0. New features include hdf5 support, out-of-core processing, inline post-processing with arbitrary Python code in the input file, and observable-specific data cuts. Pippi can be downloaded from http://github.com/patscott/pippi
Anisotropic Optical Response of Dense Quark Matter under Rotation: Compact Stars as Cosmic Polarizers
Creators: name: Hirono, Yuji
name: Nitta, Muneto
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Quantum vortices in the color-flavor locked (CFL) phase of QCD have bosonic degrees of freedom, called the orientational zero modes, localized on them. We show that the orientational zero modes are electromagnetically charged. As a result, a vortex in the CFL phase nontrivially interacts with photons. We show that a lattice of vortices acts as a polarizer of photons with wavelengths larger than some critical length.
description: 8 pages, 1 figure; v2: published version in Phys. Rev. Lett
ESM_titles_and_captions.docx from Moral responses to the COVID-19 crisis
Creators: name: Navajas, Joaquin
name: Heduan, Facundo Álvarez
name: Garbulsky, Gerry
name: Tagliazucchi, Enzo
name: Ariely, Dan
name: Sigman, Mariano
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: 179999 Psychology and Cognitive Sciences not elsewhere classified
subject: FOS: Psychology

description: The COVID-19 pandemic has raised complex moral dilemmas that have been the subject of extensive public debate. Here, we study how people judge a set of controversial actions related to the crisis: relaxing data privacy standards to allow public control of the pandemic, forbidding public gatherings, denouncing a friend who violated COVID-19 protocols, prioritizing younger over older patients when medical resources are scarce, and reducing animal rights to accelerate vaccine development. We collected acceptability judgements in an initial large-scale study with participants from 10 Latin American countries (N = 15 420). A formal analysis of the intrinsic correlations between responses to different dilemmas revealed that judgements were organized in two dimensions: one that reflects a focus on human life expectancy and one that cares about the health of all sentient lives in an equitable manner. These stereotyped patterns of responses were stronger in people who endorsed utilitarian decisions in a standardized scale. A second pre-registered study performed in the USA (N = 1300) confirmed the replicability of these findings. Finally, we show how the prioritization of public health correlated with several contextual, personality and demographic factors. Overall, this research sheds light on the relationship between utilitarian decision-making and moral responses to the COVID-19 crisis.
Attraktivität einer landwirtschaftlichen Tätigkeit – Einflussfaktoren und Gestaltungsmöglichkeiten
Creators: name: Mußhoff, Prof. Dr. Oliver
name: Tegtmeier, André
name: Hirschauer, Prof. Dr. Norbert
Publisher: name: Bundesministerium für Ernährung und Landwirtschaft
Year: 2013

description: Nach allen demografischen Prognosen wird die produktive Bevölkerung in Deutschland stark sinken. Damit stellt sich für die Landwirtschaft die Frage, wie in der Zukunft eine ausreichende Versorgung mit qualifizierten Kräften gewährleistet werden kann. Vor diesem Hintergrund wurden Fach- und Hochschüler, landwirtschaftliche und nicht-landwirtschaftliche Arbeitnehmer sowie landwirtschaftliche Unternehmer zu ihren Präferenzen und Wahrnehmungen befragt. Die Ergebnisse zeigen erstens, dass Außenstehende eine landwirtschaftliche Tätigkeit im Vergleich zu den Wahrnehmungen von landwirtschaftlich Beschäftigten zu negativ einschätzen und zum Beispiel die zeitlichen Zwänge des landwirtschaftlichen Arbeitsplatzes überschätzen. Zweitens, Beschäftigte in der Landwirtschaft sehen hohe nicht-ökonomische Vorteile ihres Arbeitsplatzes und sind mit ihrer Tätigkeit deutlich zufriedener als Arbeitnehmer außerhalb der Landwirtschaft. Drittens, es gibt wirksame und weniger wirksame Möglichkeiten, über das „Drauflegen eines Euros“ die Attraktivität der landwirtschaftlichen Tätigkeit zu steigern. Eine Erhöhung des Gehalts löst eine nahezu proportional erhöhte Bereitschaft aus, die Jahresarbeitszeit durch eine höhere Wochenarbeitszeit zu erhöhen. Dieselbe Gehaltserhöhung führt zu einer deutlich unterproportional erhöhten Bereitschaft, die Jahresarbeitszeit über eine Reduzierung des Urlaubs zu erhöhen. Eine effektive Information zu den Chancen und Arbeitsbedingungen in der Landwirtschaft ist von besonderer Bedeutung, da bei Jugendlichen und damit potenziellen Nachwuchskräften die Aussichten einer agrarbezogenen Ausbildung am Arbeitsmarkt und die große Bandbreite möglicher Betätigungsfelder nicht ausreichend bekannt sind.
description: Berichte über Landwirtschaft - Zeitschrift für Agrarpolitik und Landwirtschaft, Band 91, Heft 2, August 2013
Coprophilus formosanus Y. Shibata 1993
Creators: name: Gildenkov, M. Yu.
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Coprophilus
Coprophilus formosanus

description: Coprophilus (s. str.) formosanus Shibata, 1993
Figs 2, 3, 6–8
 TYPE MATERIAL EXAMINED (Figs. 2, 3). Holotype – ♂, Taiwan, with labels “(SUNGCHUANKANG) Nantou, TAIWAN Mar. 27th, 1986 | Y. Shibata leg.” “[HOLOTYPE] Coprophilus formosanus Y. Shibata, 1993 ♂ ” – [red label] “ Coprophilus (s.str.) formosanus Shibata, 1993 | det. M. Gildenkov, 2016 ” (TULE). Paratype – 1 ♂, Taiwan, with labels “(KUANSHAN YAKOU) Taitung, Taiwan Aug. 21st, 1987 Y. Shibata leg.” “[PARATYPE] Coprophilus formosanus, | Y. Shibata, 1993 ” – [blue label] “ Coprophilus (s.str.) formosanus Shibata, 1993 | det. M. Gildenkov, 2016 ” (cYSh).
 REMARKS. The holotype body length – 7.7 mm, pronotum width – 1.54 mm. It should be noted that the illustration of the aedeagus of C. formosanus in the original description (Shibata, 1993) does not reflect fully the arrangement of sclerites in the internal sac of the aedeagus in the holotype (Fig. 8).
description: Published as part of Gildenkov, M. Yu., 2017, A New Species Of The Genus Coprophilus Latreille, 1829 (Coleoptera: Staphylinidae: Oxytelinae) From Central China, pp. 17-20 in Far Eastern Entomologist 334 on page 20, DOI: 10.5281/zenodo.10084331
Rank-one Characterization of Joint Spectral Radius of Finite Matrix Family
Creators: name: Liu, Jun
name: Xiao, Mingqing
Publisher: name: arXiv
Year: 2011
Subjects: subject: Numerical Analysis (math.NA)
subject: Dynamical Systems (math.DS)
subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 15A60, 65F15 (Primary), 15A18 (Secondary)

description: In this paper we study the joint/generalized spectral radius of a finite set of matrices in terms of its rank-one approximation by singular value decomposition. In the first part of the paper, we show that any finite set of matrices with at most one element's rank being greater than one satisfies the finiteness property under the framework of (invariant) extremal norm. Formula for the computation of joint/generalized spectral radius for this class of matrix family is derived. Based on that, in the second part, we further study the joint/generalized spectral radius of finite sets of general matrices through constructing rank-one approximations in terms of singular value decomposition, and some new characterizations of joint/generalized spectral radius are obtained. Several benchmark examples from applications as well as corresponding numerical computations are provided to illustrate the approach.
description: Submitted for review on April 23, 2011; Final version is updated on Jan. 4, 2013 and Dec. 29, 2016
Electronic_supplementary_material.docx from Moral responses to the COVID-19 crisis
Creators: name: Navajas, Joaquin
name: Heduan, Facundo Álvarez
name: Garbulsky, Gerry
name: Tagliazucchi, Enzo
name: Ariely, Dan
name: Sigman, Mariano
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: 179999 Psychology and Cognitive Sciences not elsewhere classified
subject: FOS: Psychology

description: The COVID-19 pandemic has raised complex moral dilemmas that have been the subject of extensive public debate. Here, we study how people judge a set of controversial actions related to the crisis: relaxing data privacy standards to allow public control of the pandemic, forbidding public gatherings, denouncing a friend who violated COVID-19 protocols, prioritizing younger over older patients when medical resources are scarce, and reducing animal rights to accelerate vaccine development. We collected acceptability judgements in an initial large-scale study with participants from 10 Latin American countries (N = 15 420). A formal analysis of the intrinsic correlations between responses to different dilemmas revealed that judgements were organized in two dimensions: one that reflects a focus on human life expectancy and one that cares about the health of all sentient lives in an equitable manner. These stereotyped patterns of responses were stronger in people who endorsed utilitarian decisions in a standardized scale. A second pre-registered study performed in the USA (N = 1300) confirmed the replicability of these findings. Finally, we show how the prioritization of public health correlated with several contextual, personality and demographic factors. Overall, this research sheds light on the relationship between utilitarian decision-making and moral responses to the COVID-19 crisis.
Étoiles and Valuations
Creators: name: Cutkosky, Steven Dale
Publisher: name: arXiv
Year: 2012
Subjects: subject: Algebraic Geometry (math.AG)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 14D05, 14E05, 32C15

description: We establish some properties of étoiles and associated valuations over complex analytic spaces, showing that Abhyankar's inequality holds. We give some examples of pathological behavior of these valuations. We prove a regularization theorem for complex analytic morphisms.
description: 24 pages
Zuchtgeschichte der Deutschen Holsteinrinder
Creators: name: Brade, Prof. Dr. Wilfried
name: Brade, Dr. Edwin
Publisher: name: Bundesministerium für Ernährung und Landwirtschaft
Year: 2013

description: Die Wiege des "alten" Deutsches Schwarzbuntes Niederungsrindes (DSN) stand vor mehr als 150 Jahren in den Marsch- und Niederungsgebieten im Nordsee-Raum. Auch die Zucht der nordamerikanischen Holstein-Friesian (HF) geht auf Schwarzbunte Rinder – vor allem holländisch-friesischer Herkunft – zurück.Die deutlich höhere Milchmengenveranlagung der HF – in Verbindung mit der Möglichkeit der Nutzung verbesserter Biotechniken (zumBeispiel Langzeitlagerung von Sperma oder Embryonentransfer) – führten ab Mitte der 1960er Jahren zu einer Verdrängungskreuzung mit HF in den westlichen Bundesländern (= Deutsche Holstein-Rinder, DH); die nach der Wiedervereinigung auch im Osten Deutschlands umfassend praktiziert wurde.Übrig geblieben von den einst so weit verbreiteten "alten" DSN sind nur sehr wenige Kuhbestände. Seit Anfang der 1970er Jahre wird diese Rasse (DSN), die heute ein zu bewahrendes Kulturgut darstellt, in Form von Genreserven gehalten. Staatliche finanzielle Förderungen unterstützen den angestrebten Rasseerhalt. Die Zuchtziele bei den Deutschen Schwarzbunten unterlagen einem stetigen Wandel und damit auch gezielten Anpassungen an die jeweils vorhandenen wirtschaftlichen Veränderungen und Verbraucherwünsche.Aktuell ist die zusätzliche konsequente Einbeziehung von Gesundheitsmerkmalen von besonderem Interesse. Zukünftig dürfte die weitere Beachtung von Umweltaspekten und des Ressourcenschutzes die Komplexität der Zuchtzielformulierung bei Deutschen Holsteins noch erweitern. Die Züchtung bleibt spannend.
description: Berichte über Landwirtschaft - Zeitschrift für Agrarpolitik und Landwirtschaft, Band 91, Heft 2, August 2013
A new approach to photometric redshift contamination, providing critical insight for weak lensing cosmology
Creators: name: Benjamin, Jonathan Remby Embro
Publisher: name: University of British Columbia
Year: 2013

description: Light travelling through the Universe is deflected by the presence of mass, this effect will distort the size and shape of observed galaxies. Weak gravitational lensing measures the amount of mass in the Universe by observing these subtle changes in the shapes of distant galaxies. In order to properly interpret the observed shapes of galaxies their distances must be accurately known, this information is encoded in the redshift distribution. A detailed spectroscopic observation is the most reliable way to measure the redshift of a galaxy. Unfortunately this is a time-intensive process and weak lensing surveys are composed of millions of galaxies many of which are too faint for spectroscopic observation. For this reason photometric redshifts are used. Photometric redshifts are less accurate than spectroscopic redshifts but are easier to obtain since they rely on only a few measurements over large ranges of wavelength. Thorough knowledge of uncertainties in the photometric redshifts is vital to weak lensing because photometric redshifts provide the distances necessary to understand the weak lensing signal. In this thesis we present a new technique to measure the reliability of photometric redshifts with the goal of improving the estimated redshift distribution for use in weak lensing studies. Mock observational surveys are used to test the technique before applying it to two surveys: the Deep component of the Canada-France-Hawaii Telescope Legacy Survey (CFHTLS-Deep) and the CFHT Lensing Survey (CFHTLenS). We demonstrate our ability to construct both the true redshift distribution and the true average redshift of galaxies in a given photometric redshift range. Furthermore, we show that the photometric redshift probability distribution function can be used as an accurate measure of the true redshift distribution when summed for an ensemble of galaxies. Using our tested redshift distribution we present cosmological constraints for CFHTLenS from a weak lensing analysis. We present constraints on cosmological parameters for a model of the Universe with dark energy and cold (non-interacting) dark matter (ΛCDM). We find that our weak lensing analy- sis, combined with other cosmological probes, improves the precision of these measurements by a factor of 1.5 to 2.
Kapitalanlagen in Landwirtschaft – Rendite und Risiko
Creators: name: Schiereck, Prof. Dr. Dirk
name: Fraunhoffer, Dr. Robert
name: Stimeier, Sergej
Publisher: name: Bundesministerium für Ernährung und Landwirtschaft
Year: 2013

description: Während die Landwirtschaft in den vergangenen Jahren immer stärker auch von institutionellen Kapitalanlegern als Investmentalternative entdeckt wurde, erscheint es für Privatanleger immer noch recht schwer, in diesem Bereich Geld anzulegen. Es gibt aber inzwischen eine Reihe von Investmentfonds, die sich dem Agrarsektor widmen. Dabei stellt sich allerdings die Frage, ob der Anleger, der Investitionen in die Landwirtschaft wünscht, wirklich genau das erhält. Der Analyse dieses Aspektes widmet sich der erste Teil der Untersuchung, der zeigt, dass nur anteilig tatsächlich in Landwirtschaft investiert wird.Die Analyse der Performance solcher agrarorientierten Investmentvehikel legt dar, dass sich auf Basis der erzielten dreijährigen Renditeüberschüsse Agrarfonds besser entwickelt haben als der Gesamtmarkt. Eine anschließende Betrachtung möglicher Erfolgsfaktoren lässt jedoch aufgrund der wenigen auf dem deutschen Markt existierenden Agrarfonds und der zum Teil widersprüchlichen Ergebnisse keine eindeutigen Schlussfolgerungen zu. Eine Besonderheit stellen Agrarfonds mit einem Investmentschwerpunkt auf agrarische Rohstoffe dar. Diese haben sich allgemein schlechter entwickelt als breit aufgestellte Agrarfonds.
description: Berichte über Landwirtschaft - Zeitschrift für Agrarpolitik und Landwirtschaft, Band 91, Heft 2, August 2013
A symmetrization technique for continuous-variable quantum key distribution
Creators: name: Leverrier, Anthony
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We introduce a symmetrization technique which can be used as an extra step in some continuous-variable quantum key distribution protocols. By randomizing the data in phase space, one can dramatically simplify the security analysis of the protocols, in particular in the case of collective attacks. The main application of this procedure concerns protocols with postselection, for which security was established only against Gaussian attacks until now. Here, we prove that under some experimentally verifiable conditions, Gaussian attacks are optimal among all collective attacks.
description: 7 pages
Zardushtiylik dinida komillik g`oyalari
Creators: name: Madiyor Asadov Mexriddin  og'li, TATU SAMARQAND
Publisher: name: Zenodo
Year: 2023

description: Maqola Zardushtiylikda mukammallikning kengroq qamrovlari  haqida  mulohazalar  bilan  yakunlangan  va  kelajakdagi  tadqiqotlar  uchun  yo'llarni  taklif  qiladi.  Ushbu  maqola  zardushtiylik  dinidagi  ko'p  qirrali  mukammallik  g'oyalarini  o'rganadi.  Keng  qamrovli  adabiyotlarni  tahlil  qilish  orqali  tadqiqot  zardushtiylikning  asosiy  tamoyillari,  mukammallikka  erishish  usullari  va  mukammallikka  intilish  natijalarini  o'rganadi.  Natijalar  zardushtiylik  e'tiqodi  doirasida mukammallikni nozik tushunishni ta'kidlab, uning ma'naviy, axloqiy va  kommunal  jihatlardagi  ahamiyatini  yoritib  beradi.  Munozara  bo'limida  zardushtiylik  dunyoqarashini  shakllantirishdagi  roli  haqida  yaxlit  nuqtai  nazarni  taklif  qilib,  mukammallikka  intilishning  qiyinchiliklari  va  mukofotlari  haqida tushuncha berilgan
The vertical motions of mono-abundance sub-populations in the Milky Way disk
Creators: name: Bovy, Jo
name: Rix, Hans-Walter
name: Hogg, David W.
name: Beers, Timothy C.
name: Lee, Young Sun
name: Zhang, Lan
Publisher: name: arXiv
Year: 2012
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present the vertical kinematics of stars in the Milky Way's stellar disk inferred from SDSS/SEGUE G-dwarf data, deriving the vertical velocity dispersion, σ_z, as a function of vertical height |z| and Galactocentric radius R for a set of 'mono-abundance' sub-populations of stars with very similar elemental abundances [α/Fe] and [Fe/H]. We find that all components exhibit nearly isothermal kinematics in |z|, and a slow outward decrease of the vertical velocity dispersion: σ_z (z,R|[α/Fe],[Fe/H]) ~ σ_z ([α/Fe],[Fe/H]) x \exp (-(R-R_0)/7 kpc}). The characteristic velocity dispersions of these components vary from ~ 15 km/s for chemically young, metal-rich stars, to >~ 50 km/s for metal poor stars. The mean σ_z gradient away from the mid plane is only 0.3 +/- 0.2 km/s/kpc. We find a continuum of vertical kinetic temperatures (~σ^2_z) as function of ([α/Fe],[Fe/H]), which contribute to the stellar surface mass density as Σ_{R_0}(σ^2_z) ~ \exp(-σ^2_z). The existence of isothermal mono-abundance populations with intermediate dispersions reject the notion of a thin-thick disk dichotomy. This continuum of disks argues against models where the thicker disk portions arise from massive satellite infall or heating; scenarios where either the oldest disk portion was born hot, or where internal evolution plays a major role, seem the most viable. The wide range of σ_z ([α/Fe],[Fe/H]) combined with a constant σ_z(z) for each abundance bin provides an independent check on the precision of the SEGUE abundances: δ_[α/Fe] ~ 0.07 dex and δ_[Fe/H] ~ 0.15 dex. The radial decline of the vertical dispersion presumably reflects the decrease in disk surface-mass density. This measurement constitutes a first step toward a purely dynamical estimate of the mass profile the disk in our Galaxy. [abridged]
Gravitational waves in dynamical spacetimes with matter content in the Fully Constrained Formulation
Creators: name: Cordero-Carrión, Isabel
name: Cerdá-Durán, Pablo
name: Ibáñez, José María
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The Fully Constrained Formulation (FCF) of General Relativity is a novel framework introduced as an alternative to the hyperbolic formulations traditionally used in numerical relativity. The FCF equations form a hybrid elliptic-hyperbolic system of equations including explicitly the constraints. We present an implicit-explicit numerical algorithm to solve the hyperbolic part, whereas the elliptic sector shares the form and properties with the well known Conformally Flat Condition (CFC) approximation. We show the stability andconvergence properties of the numerical scheme with numerical simulations of vacuum solutions. We have performed the first numerical evolutions of the coupled system of hydrodynamics and Einstein equations within FCF. As a proof of principle of the viability of the formalism, we present 2D axisymmetric simulations of an oscillating neutron star. In order to simplify the analysis we have neglected the back-reaction of the gravitational waves into the dynamics, which is small (<2 %) for the system considered in this work. We use spherical coordinates grids which are well adapted for simulations of stars and allow for extended grids that marginally reach the wave zone. We have extracted the gravitational wave signature and compared to the Newtonian quadrupole and hexadecapole formulae. Both extraction methods show agreement within the numerical errors and the approximations used (~30 %).
description: 17 pages, 9 figures, 2 tables, accepted for publication in PRD
Analysis of the triply heavy baryon states with QCD sum rules
Creators: name: Wang, Zhi-Gang
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this article, we study the ${1\over 2}^{\pm}$ and ${3\over 2}^{\pm}$ triply heavy baryon states in an systematic way by subtracting the contributions from the corresponding ${1\over 2}^{\mp}$ and ${3\over 2}^{\mp}$ triply heavy baryon states with the QCD sum rules, and make reasonable predictions for their masses.
description: 14 pages, 25 figures, revised version
Fragen und Probleme des Klebens von archäologischen Gläsern
Creators: name: Hägele, Jörg
Publisher: name: FH für Technik und Wirtschaft Berlin
Year: 2000
Subjects: Conservation Restoration

description: Im ersten Teil der vorliegenden Arbeit werden Probleme des Klebens von archäologischem Glas am Beispiel von vier Hohlgläsern aus dem 17. Jahrhundert dargestellt und diskutiert. Anschließend wird der heutige Forschungs-stand mit Hilfe eines Fragebogens und einer ausführlichen Literaturrecherche vorgestellt. Klebe- und Festigkeitseigenschaften verschiedener handelsüblicher Produkte werden in einer technischen Prüfung untersucht und ferner das Alterungsverhalten dieser Produkte beurteilt. Die aus dem Fragebogen, der Literatur und der Prüfung gewonnenen Erkenntnisse fließen in die Behandlung der vier Glasobjekte ein. Für die Objekte wurden die Klebstoffe Paraloid B 72 und Araldit 2020 verwendet. Diese Anwendung wird anschaulich begründet und dokumentiert.
Die Wandmalereien der St. Andreas-Kirche zu Burgsdorf (Lkr. Mansfelder Land/ Sachsen-Anhalt). Entwicklung eines Konservierungskonzepts unter besonderer Beachtung der Reduzierung eines Stärkeleimüberzugs
Creators: name: Hansch, Jutta
Publisher: name: HAWK Hildesheim/Holzminden/Göttingen
Year: 2000
Subjects: Conservation Restoration

description: Die Wandmalereien in Kalktechnik, datiert um 1230/ 40, wurden um 1893 freigelegt und mit einem in der Wandmalereikonservierung unüblichen Stärkeleim gefestigt. Der ursprünglich wasserlösliche klare Stärkeleim liegt heute in gealtertem Zustand vor. Der Leim ist wasserunlöslich, versprödet und vergilbt, sowie zum Teil bereits von Mikroorgansimen abgebaut. Der Überzug steht schüsselförmig auf und strappiert dabei die Malschicht von der Tüncheoberfläche. Durch die hygroskopischen Eigenschaften eines organischen Materials neigt der Leim bei Schwankungen der relativen Luftfeuchtigkeit zum Quellen und Schwinden, wobei die Adhäsionskräfte zwischen Überzug und Malschicht größer sind als die Kohäsionskräfte innerhalb der Malschicht bzw. die Adhäsionskräfte zwischen Malschicht und Tünche.
Vor einer Behandlung der Oberfläche muß die Malschicht gefestigt bzw. zum Teil fixiert werden. Das Festigungsmittel darf eine spätere Anlösung des Stärkeleims nicht verhindern, wie auch das Lösungsmittel des Leim die Wirkung des Festigungsmittel nicht verändern sollte. Auf speziell hergestellten Probeplatten, wobei die Maltechnik, ein Stärkeleim, sowie die Schäden künstlich nachgestellt wurden, konnten verschiedene Konservierungsmaterialien getestet werden. Am geeignetsten erwies sich die Malschichtfestigung mit Kieselsäuresther (Fa. Remmers) - schnellhydrolisiert mit destilliertem Wasser. Der Stärkeleim wird zunächst mit einer Ammoniumcarbonatkompresse angequollen und kann dann mechanisch abgenommen werden. Nach der Anwendung von Ammoniumcarbonat ist es notwendig die Oberfläche mit einer aufliegenden Wasserkompresse zu neutralisieren. Durch die Kompressenanwendungen können gleichzeitig leichtlösliche Salze aus der Verputzoberfläche reduziert werden.
Bei der angewendeten Methode konnte der Stärkeleimüberzug nahezu vollständig von der Malschichtoberfläche entfernt werden, wobei die schädigende Wirkung des Leims aufgehoben ist. Nach der Entfernung des vergilbten Überzugs stellt sich die Malschicht wieder in ihrer ursprünglichen Farbigkeit dar.
Pulsars: Cosmic Permanent 'Neutromagnets'?
Creators: name: Hansson, Johan
name: Ponga, Anna
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We argue that pulsars may be spin-polarized neutron stars, i.e. cosmic permanent magnets. This would simply explain several observational facts about pulsars, including the 'beacon effect' itself i.e. the static/stable misalignment of rotational and magnetic axes, the extreme temporal stability of the pulses and the existence of an upper limit for the magnetic field strength - coinciding with the one observed in "magnetars". Although our model admittedly is speculative, this latter fact seems to us unlikely to be pure coincidence.
description: Note added in proof (footnote)
Hollow core Bragg fiber with antiresonant intermediate layer
Creators: name: Zinin, Yurii A.
name: Panov, Andrey V.
name: Kulchin, Yurii N.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: By means of the transfer matrix method, the optical properties of fibers with a distinct intermediate layer between a hol-low core and periodic cladding are calculated. The periodic cladding consists of two types of the alternating layers. The intermediate layer has distinct thickness and refractive index. Depending on these parameters, the fiber can work in the single-mode or multi-mode regimes. In the multi-mode regime, the optical loss of the smallest loss mode can be de-creased by increasing the thickness of the layer. In the single-mode regime, the optical loss falls with a rise in the refrac-tive index of the intermediate layer. The optical properties of the fiber are determined by the antiresonance reflection from the intermediate layer and the Bragg reflection from the periodic cladding. Selecting the parameters of the interme-diate layer, the optical loss of the fiber in the single-mode regime can be reduced by an order of magnitude over the loss of the traditional Bragg fiber.
description: 9 pages, 4 figures
Replication and Reproducibility in Social Sciences and Statistics: Context, Concerns, and Concrete Measures
Creators: name: Vilhuber, Lars
Publisher: name: Zenodo
Year: 2019

description: Replicability is at the core of the scientific enterprise. In the past 30 years, recurring concerns about the extent of replicability (or lack thereof) of the research in various disciplines have surfaced, including in economics.

In this talk, I describe the context in which the current discussion in the social science is occurring: what are the definitions of replicability and reproducibility, what is failing, and to what extent. In particular, I discuss the concerns in economics: to what extent is this a problem in economics, what are the approaches that are being considered, and what are the possible broader implications of those approaches. Finally, I discuss the concrete measures that are being implemented under my guidance at the American Economic Association, and that are being discussed in the broader economics community.

The solutions to these problems will change the way research will be taught and conducted, in economics in particular, and in the social sciences more broadly. The implications affect undergraduate and graduate teaching, research infrastructure, and habits.

Presented at UGA (Athens, GA) on 2019-02-13
description: The opinions expressed in this talk are solely the authors, and do not represent the views of the U.S. Census
Bureau, the American Economic Association, or any of the funding agencies.
Ölen von Sandstein als Witterungsschutz am Berner Münster
Creators: name: Hotz, Tobias
Publisher: name: Hochschule der Künste Bern
Year: 2006
Subjects: Conservation Restoration

description: Das Ölen von Sandsteinen ist quellenkundlich belegt, wird aber auch in der aktuellen Konservierungstechnik angewendet. Die präventive Schutzmassnahme bezweckt, das Eindringen von schädigendem Wasser in den Sandstein zu minimieren.
Sowohl die applikationstechnischen Rahmenbedingungen, wie auch physikalische Materialveränderungen und die chemische Beständigkeit dieser Massnahme wurden untersucht. Mit verschiedenen optischen und messtechnischen Verfahren wie REM, FT-IR und histochemische Anfärbung wurde versucht, Öl im Porengefüge des Sandsteins nachzuweisen und den Abbau seiner hydrophoben Wirkung zu ermitteln.
Die äusseren Rahmenbedingungen beeinflussen die Wirksamkeit und Nachhaltigkeit dieser Konservierungsmassnahme elementar. So wird einerseits die Oberflächenbenetzung stark verändert, hingegen bleibt die reduzierte Sorptionsfähigkeit erhalten. Im weiteren Kontext erweisen sich Fugen und Mörtel als potentielle Problemzonen.
Untersuchung ausgewählter Kunstharze zur Festigung und Fixierung unterschiedlich erhaltener Malschichten und ihres Kalksteinträgers
Creators: name: Dömling, Tina
Publisher: name: HAWK Hildesheim/Holzminden/Göttingen
Year: 2001
Subjects: Conservation Restoration

description: Zur Konservierung der überwiegend öl-protein-gebundenen Fassungen und ihres Kalksteinträgers am Tympanonrelief "Marientod" (datiert ca. 1310/20) an der St. Martinikirche in Braunschweig wurden verschiedene in der Restaurierung bewährte Kunstharze aus der Gruppe der Acrylharze und Polyvinylacetatharze jeweils in Lösungsmittel gelöst und als Dispersion in je zwei verschiedenen Konzentrationen untersucht. Die Untersuchungen wurden objektbezogen geplant, d. h. es wurden die am Objekt im Vordergrund stehenden Fragestellungen auf das Anforderungsprofil der Kunstharze übertragen.
Zunächst werden die am Relief auftretenden Schäden beschrieben, deren Hauptursache auf eine Verdichtung der Oberfläche durch Gips- und Schmutzkrusten zurückzuführen ist, sowie auf eine um 1842 durchgeführte Ölkonservierung. Die ausgewählten Kunstharze wurden anschließend Versuchen zu Wasserdampfdurchlässigkeit, Luftdurchlässigkeit, Wasseraufnahme, Verträglichkeit mit Salzen, Klebefähigkeit und Temperaturwechselbeständigkeit unterzogen. Alle Harze erwiesen sich als hoch bis mittel wasserdampfdurchlässig, so daß die endgültige Entscheidung, die Acrylharze (Paraloid® B 72 und Primal® AC 33) am Objekt zu verwenden, auf der Grundlage der übrigen Versuche getroffen wurde.
Einige Fragen blieben offen, so z. B. die Langzeitbeständigkeit der Harze bei der am Objekt festgestellten geringen, aber nicht zu vernachlässigenden Gegenwart von Salzen. Bei entsprechenden Versuchen konnte in diesem Zusammenhang beobachtet werden, daß Salze in Verbindung mit den getesteten Kunstharzen hygroskopisch aktiv bleiben. Kunstharze werden im Außenbereich relativ selten eingesetzt, da sie nach der Trocknung hydrophobe Eigenschaften haben. Da das Marientympanon eingehaust ist und das Relief selbst sich so in vor Bewitterung geschützter Lage befindet, sind die klimatischen Bedingungen nur bedingt mit der Situation eines frei bewitterten Objektes vergleichbar.
Im Anschluß an eine Anwendung der Harze am Objekt sollte eine regelmäßige Wartung des Reliefs gewährleistet sein, da dies nicht nur der Erhaltung des Objektes, sondern auch der Überprüfung der Alterungsbeständigkeit der Harze dient.
A remark on the Isomorphism Conjectures
Creators: name: Ogle, Crichton
name: Ye, Shengkui
Publisher: name: arXiv
Year: 2011
Subjects: subject: K-Theory and Homology (math.KT)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 19Kxx

description: We show that for various natural classes of groups and appropriately defined K- and L-theoretic functors, injectivity or bijectivity of the assembly map follows from the Isomorphism Conjecture being true for acyclic groups lying within that class.
description: (Muenster Jour. of math., to appear)
Continuity of LF-algebra representations associated to representations of Lie groups
Creators: name: Glockner, Helge
Publisher: name: arXiv
Year: 2012
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 22D15, 46F05 (Primary) 22E30, 42A85, 46A13, 46E25

description: Let G be a Lie group and E be a locally convex topological G-module. If E is sequentially complete, then E and its space of smooth vectors are modules for the algebra D(G) of compactly supported smooth functions on G. However, the module multiplication need not be continuous. The pathology can be ruled out if E is (or embeds into) a projective limit of Banach G-modules. Moreover, in this case the space of analytic vectors is a module for the algebra A(G) of superdecaying analytic functions introduced by Gimperlein, Kroetz and Schlichtkrull. We prove that the space of analytic vectors is a topological A(G)-module if E is a Banach space or, more generally, if every countable set of continuous seminorms on E has an upper bound. The same conclusion is obtained if G has a compact Lie algebra. The question of whether D(G) and A(G) are topological algebras is also addressed.
description: 33 pages, LaTeX; v3: update of references