cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Option pricing for Fractal Activity Time Geometric Brownian Motion (FATGBM)
Creators: name: Dev, Priya
Publisher: name: The Australian National University
Year: 2011
Subjects: subject: HG6024.A3 D48 2011
subject: Options (Finance) Prices Mathematics
subject: Stochastic processes
subject: Brownian motion processes
subject: Fractals

description: This thesis examines option pricing for a Long Range Dependent (LRD) stochastic process with student marginal distributions called Fractal Activity Time Geometric Brownian Motion (FATGBM), introduced in Heyde (1999). We address four separate problems involving the pricing of options under FATGBM and other LRD stochastic processes. Following an introduction into the mechanics of derivative pricing, the thesis begins by addressing the problem of derivative pricing under FATGBM. We first develop the properties of FATGBM and show that the market is arbitrage-free but incomplete under this model. We then prove that there is no replicating strategy for this model except under special circumstances. We show that those special circumstances lead to the hedging of a Timer Option where interest rates are zero and we conclude by discussing the issue of completing the market by calibrating FATGBM to liquid risky assets such as European Options, as discussed in Carr et al. (2001). We then describe how to price path dependent options under FATGBM. We first propose a non-recombining tree that is used to then construct a recombining tree to price path dependent options. Further, we prove that our discrete time model converges to the continuous time one, resulting in a discrete approximation scheme for path dependent options. We then prove that the discrete approximation scheme results in an upper bound for the price of an American put. The next chapter addresses the problem of sampling from the distribution of FATGBM conditional on price history. Given that FATGBM is a LRD process, it is imperative to be able to simulate future price paths given a price path history. We propose a Markov Chain Monte Carlo (MCMC) approach to develop two algorithms for two different LRD processes, one FATGBM and one similar to FATGBM that we call FATGBM 2. We prove that the algorithms result in a Markov chain with a stationary distribution identical to the conditional distribution from which we wish to sample. We then discuss the implementation of both algorithms and compare the mixing times and features of the resultant conditional distribution. The final chapter combines the themes and results of the preceding chapters by using the MCMC algorithm in conjunction with the recombining tree developed in Chapter 2. The result is an analysis of the effect of long range dependence on option prices, the most compelling finding being that LRD has more of an impact on the option price than the impact of heavy tails alone, a phenomenon that has thus far been overlooked by the literature on option pricing. We conclude with an analysis of the implied volatility surface arising from FATGBM and discuss the implications of our research in the context of the existing literature.
Where binary neutron stars merge: predictions from IllustrisTNG
Creators: name: Rose, Jonah C.
name: Torrey, Paul
name: Lee, K. H.
name: Bartos, I.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The rate and location of Binary Neutron Star (BNS) mergers are determined by a combination of the star formation history and the Delay Time Distribution (DTD) function. In this paper, we couple the star formation rate histories (SFRHs) from the IllustrisTNG model to a series of varied assumptions for the BNS DTD to make predictions for the BNS merger host galaxy mass function. These predictions offer two outcomes: (i) in the near term: influence BNS merger event follow-up strategy by scrutinizing where most BNS merger events are expected to occur and (ii) in the long term: constrain the DTD for BNS merger events once the host galaxy mass function is observationally well determined. From our fiducial model analysis, we predict that 50% of BNS mergers will occur in host galaxies with stellar mass between $10^{10} - 10^{11}$ $M_\odot$, 68% between $4 \times 10^{9} - 3\times 10^{11}$ $M_\odot$, and 95% between $4 \times 10^8 - 2 \times 10^{12}$ $M_\odot$. We find that the details of the DTD employed does not have a strong effect on the peak of the host mass function. However, varying the DTD provides enough spread that the true DTD can be determined from enough electromagnetic observations of BNS mergers. Knowing the true DTD can help us determine the prevalence of BNS systems formed through highly eccentric and short separation fast-merging channels and can constrain the dominant source of r-process material.
description: 11 Pages, 3 figures
Quadratic equations over free groups are NP-complete
Creators: name: Kharlampovich, O.
name: Lysenok, I. G.
name: Myasnikov, A. G
name: Touikan, N. W. M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 68Q17 (Primary), 20E05, 57M07 (Secondary)

description: We prove that the problems of deciding whether a quadratic equation over a free group has a solution is NP-complete.
Letter from J.E. McAllister to [James] Goldie, October 9, 1929
Creators: name: McAllister, John Edgar
Publisher: name: The University of British Columbia
Year: 2017

description: Letter from J.E. McAllister to James Goldie, dated October 9, 1929, regarding an offer to by Bellevue Ranche; asks Goldie's opinion on the offer.
Universal Hall conductance scaling in non-Hermitian Chern insulators
Creators: name: Groenendijk, Solofo
name: Schmidt, Thomas L.
name: Meng, Tobias
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate the Hall conductance of a two-dimensional Chern insulator coupled to an environment causing gain and loss. Introducing a biorthogonal linear response theory, we show that sufficiently strong gain and loss lead to a characteristic non-analytical contribution to the Hall conductance. Near its onset, this contribution exhibits a universal power-law with a power 3/2 as a function of Dirac mass, chemical potential and gain strength. Our results pave the way for the study of non-Hermitian topology in electronic transport experiments.
description: 5+3 pages, 2 figures
Demonstration of the Magic Bullet blender
Creators: name: Parker, Verdena
name: Escamilla, Ramón
name: Newbold, Lindsey
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: hup

description: Audio file VP-180811-02: Demonstration of how to use a Magic Bullet blender, in Hupa alternating with English. Project metadata suggests that a video file was recorded during this session, but the file has not been located.
New Approach to $N$-body Relativistic Quantum Mechanics
Creators: name: Gu, Ying-Qiu
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper, we propose a new approach to the relativistic quantum mechanics for many-body, which is a self-consistent system constructed by juxtaposed but mutually coupled nonlinear Dirac's equations. The classical approximation of this approach provides the exact Newtonian dynamics for many-body, and the nonrelativistic approximation gives the complete Schrödinger equation for many-body.
description: 13 pages, no figure
Supplemental Web Files for "Enhancing evaluation of bull fertility through multivariate analysis of sperm"
Creators: name: Azevedo, H.C.
name: Blackburn, H.D.
name: Lozada-Soto, E.A.
name: Spiller, S.F.
name: Purdy, P.H.
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 300399
subject: Animal production not elsewhere classified

description: Online repository for supplementary files for Journal of Dairy Science paper.
ADHM skyrmions
Creators: name: Cork, Josh
name: Halcrow, Chris
Publisher: name: Bristol : IOP Publ.
Year: 2022
Subjects: subject: 14D21
subject: 53C29
subject: 70S15
subject: 70S20
subject: instantons
subject: Skyrme model
subject: skyrmions
subject: topological solitons
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik
subject: Dewey Decimal Classification::500 | Naturwissenschaften::510 | Mathematik

description: We propose, via the Atiyah-Manton approximation, a framework for studying skyrmions on R3 using Atiyah-Drinfeld-Hitchin-Manin (ADHM) data for Yang-Mills instantons on R4. We provide a dictionary between important concepts in the Skyrme model and analogous ideas for ADHM data, and describe an efficient process for obtaining approximate Skyrme fields directly from ADHM data. We show that the approximation successfully describes all known skyrmions with charge B≤8, with energies reproduced within 2% of the true minimisers. We also develop factorisation methods for studying clusters of instantons and skyrmions, generalising early work by Christ-Stanton-Weinberg, and describe some relatively large families of explicit ADHM data. These tools provide a unified framework for describing coalesced highly-symmetric configurations as well as skyrmion clusters, both of which are needed to study nuclear systems in the Skyrme model.
Transcription of a discussion of rocks at Xowung-q'it
Creators: name: Parker, Verdena
name: Escamilla, Ramón
name: Newbold, Lindsey
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: hup

description: Audio file VP-180811-01: Transcription of a discussion of rocks at the dance site at Xowung-q'it (file VP-230711-06), from the beginning to the end of the Hupa portion of the recording.
A simple model for mixing and cooling in cloud-wind interactions
Creators: name: Abruzzo, Matthew W.
name: Bryan, Greg L.
name: Fielding, Drummond B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We introduce a simple entropy-based formalism to characterize the role of mixing in pressure-balanced multiphase clouds, and demonstrate example applications using Enzo-E (magneto)hydrodynamic simulations. Under this formalism, the high-dimensional description of the system's state at a given time is simplified to the joint distribution of mass over pressure ($P$) and entropy ($K=P/ρ^γ$). As a result, this approach provides a way for (empirically and analytically) quantifying the impact of different initial conditions and sets of physics on the system evolution. We find that mixing predominantly alters the distribution along the $K$ direction and illustrate how the formalism can be used to model mixing and cooling for fluid elements originating in the cloud. We further confirm and generalize a previously suggested criterion for cloud growth in the presence of radiative cooling, and demonstrate that the shape of the cooling curve, particularly at the low temperature end, can play an important role in controlling condensation. Moreover, we discuss the capacity of our approach to generalize such a criterion to apply to additional sets of physics, and to build intuition for the impact of subtle higher order effects not directly addressed by the criterion.
description: 21 pages + appendices, 17 figures, Submitted to ApJ. For associated movies, see http://matthewabruzzo.com/visualizations/
Theoretical uncertainties for electroweak and Higgs-boson precision measurements at FCC-ee
Creators: name: Freitas, A.
name: Heinemeyer, S.
name: Beneke, M.
name: Blondel, A.
name: Dittmaier, S.
name: Gluza, J.
name: Hoang, A.
name: Jadach, S.
name: Janot, P.
name: Reuter, J.
name: Riemann, T.
name: Schwinn, C.
name: Skrzypek, M.
name: Weinzierl, S.
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2019

description: Due to the high anticipated experimental precision at the Future Circular Collider FCC-ee (or other proposed $e^+e^-$ colliders, such as ILC, CLIC, or CEPC) for electroweak and Higgs-boson precision measurements, theoretical uncertainties may have, if unattended, an important impact on the interpretation of these measurements within the Standard Model (SM), and thus on constraints on new physics. Current theory uncertainties, which would dominate the total uncertainty, need to be strongly reduced through future advances in the calculation of multi-loop radiative corrections together with improved experimental and theoretical control of the precision of SM input parameters. This document aims to provide an estimate of the required improvement in calculational accuracy in view of the anticipated high precision at the FCC-ee. For the most relevant electroweak and Higgs-boson precision observables we evaluate the corresponding quantitative impact.
Weingardt, Markus A., Religion Macht Frieden
Creators: name: Müller-Fahrenholz, Geiko
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 58 Nr. 1 (2009): Ökumenische Rundschau, Band 58, Heft 1
Discovery of very-high-energy gamma-ray emission from the vicinity of PSR J1913+1011 with H.E.S.S
Creators: name: HESS Collaboration
name: Aharonian, F.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The H.E.S.S. experiment, an array of four Imaging Atmospheric Cherenkov Telescopes with high sensitivity and large field-of-view, has been used to search for emitters of very-high-energy (VHE, >100 GeV) gamma-rays along the Galactic plane, covering the region 30 deg < l < 60 deg, 280 deg < l < 330 deg, and -3 deg < b < 3 deg. In this continuation of the H.E.S.S. Galactic Plane Scan, a new extended VHE gamma-ray source was discovered at alpha(2000)=19h12m49s, delta(2000)=+10d09'06'' (HESS J1912+101). Its integral flux between 1-10 TeV is ~10% of the Crab Nebula flux in the same energy range. The measured energy spectrum can be described by a power law with a photon index Gamma = 2.7+-0.2(stat)+-0.3(sys). HESS J1912+101 is plausibly associated with the high spin-down luminosity pulsar PSR J1913+1011. We also discuss associations with an as yet unconfirmed SNR candidate proposed from low frequency radio observation and/or with molecular clouds found in 13CO data.
description: 6 pages, 2 figures; Accepted for publication in A&A on February 20, 2008
Indonesia–Import Licensing Regimes: GATT Rules for Agricultural Trade?
Creators: name: Ahn, Dukgeun
name: Gnutzmann-Mkrtchyan, Arevik
Publisher: name: Cambridge : Cambridge Univ. Press
Year: 2019
Subjects: subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::330 | Wirtschaft
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::380 | Handel, Kommunikation, Verkehr

description: This paper examines two disputes brought by the United States and New Zealand in response to a series of import sanctions for agricultural products imposed by the Indonesian government to promote food self-sufficiency. We document the heterogeneous effect the sanctioning measures had on Indonesia's partners. We argue that Indonesia's import licensing regimes acted as a high, sometimes prohibitive, fixed cost of exporting. Frequent changes of regulation provided additional challenges and increased the costs of exporting. These properties determined the differential impacts of Indonesia's measures where some sustained significant market losses while other large exporters, in particular Australia, following a short decline strengthened their market position and export levels.
Data-driven Identification of 2D Partial Differential Equations using extracted physical features
Creators: name: Meidani, Kazem
name: Farimani, Amir Barati
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Many scientific phenomena are modeled by Partial Differential Equations (PDEs). The development of data gathering tools along with the advances in machine learning (ML) techniques have raised opportunities for data-driven identification of governing equations from experimentally observed data. We propose an ML method to discover the terms involved in the equation from two-dimensional spatiotemporal data. Robust and useful physical features are extracted from data samples to represent the specific behaviors imposed by each mathematical term in the equation. Compared to the previous models, this idea provides us with the ability to discover 2D equations with time derivatives of different orders, and also to identify new underlying physics on which the model has not been trained. Moreover, the model can work with small sets of low-resolution data while avoiding numerical differentiations. The results indicate robustness of the features extracted based on prior knowledge in comparison to automatically detected features by a Three-dimensional Convolutional Neural Network (3D CNN) given the same amounts of data. Although particular PDEs are studied in this work, the idea of the proposed approach could be extended for reliable identification of various PDEs.
NEN Spec 3 2020: Hergebruik van Single Use Medical Devices
Creators: name: B. (Bart) Van Straten
name: Axon Advocaten
name: RIVM Nederland
name: Hygenic Care
name: Demcon Nederland
name: , Johnson
name: Medisch Centrum Leeuwarden
name: Radboud UMC
name: Technische Universiteit Delft
name: Lohmann And Rauscher BV
name: MINT Zorgadvies
name: Nederlands Normalisation Institute
name: Molnlycke Nederland
name: Horeman, Tim
Publisher: name: figshare
Year: 2021
Subjects: subject: 111705 Environmental and Occupational Health and Safety
subject: FOS: Health sciences

description: Medische hulpmiddelen voor eenmalig gebruik - Richtlijn voor hergebruik tijdens COVID-19.
NEN-spec 3 beschrijft de stappen die moeten worden doorlopen om tot een weloverwogen beslissing te komen over herverwerking en hergebruik van medische hulpmiddelen voor eenmalig gebruik.
Variations in sub-daily precipitation at centennial scale
Creators: name: Förster, Kristian
name: Thiele, Luisa-Bianca
Publisher: name: London : Springer Nature
Year: 2020
Subjects: subject: downscaling
subject: precipitation (climatology)
subject: spatial resolution
subject: timescale
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::330 | Wirtschaft::333 | Boden- und Energiewirtschaft::333,7 | Natürliche Ressourcen, Energie und Umwelt
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Due to data availability long-term variations in precipitation rates are mostly studied based on daily precipitation recordings. Recent research suggests, however, that variations in sub-daily precipitation are subject to higher dynamics compared to daily precipitation and a more rapid intensification is likely. Here we show that both observational data with at least 58 years of sub-daily precipitation records and a dynamical downscaling approach with low spatial resolution based on atmospheric re-analysis data confirm these expectations with consistent results. High percentiles of precipitation are subject to multi-decadal oscillations and increased during the last 150 years. We found an increase of 4% K−1 (daily), 12% K−1 (hourly), and 13% K−1 (10 min), which is consistent with Clausius–Clapeyron- (CC) and super CC-scaling, respectively. These findings highlight that dynamical downscaling can help to reliably shed light on sub-daily precipitation variations if small timescales are considered in the experiments.
Supplemental Web Files for "Enhancing evaluation of bull fertility through multivariate analysis of sperm"
Creators: name: Acevedo, H.C.
name: Blackburn, H.D.
name: Lozada-Soto, E.A.
name: Spiller, S.F.
name: Purdy, P.H.
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 300399
subject: Animal production not elsewhere classified

description: Online repository for supplementary files for Journal of Dairy Science paper.
Vector computation
Creators: name: Svozil, Karl
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum physical resources are directional quantities that can be formalized by unit vectors or the associated orthogonal projection operators. When compared to classical computational states which are elements of (power) sets vector computations offer (dis)advantages.
description: 15 pages, 1 table, contribution to a special volume on "Alternative Computing" by WSPC
Instanton on toric singularities and black hole countings
Creators: name: Fucito, Francesco
name: Morales, Jose F.
name: Poghossian, Rubik
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We compute the instanton partition function for ${\cal N}=4$ U(N) gauge theories living on toric varieties, mainly of type $\R^4/Γ_{p,q}$ including $A_{p-1}$ or $O_{\PP_1}(-p)$ surfaces. The results provide microscopic formulas for the partition functions of black holes made out of D4-D2-D0 bound states wrapping four-dimensional toric varieties inside a Calabi-Yau. The partition function gets contributions from regular and fractional instantons. Regular instantons are described in terms of symmetric products of the four-dimensional variety. Fractional instantons are built out of elementary self-dual connections with no moduli carrying non-trivial fluxes along the exceptional cycles of the variety. The fractional instanton contribution agrees with recent results based on 2d SYM analysis. The partition function, in the large charge limit, reproduces the supergravity macroscopic formulae for the D4-D2-D0 black hole entropy.
description: 29 pages, 3 fig Section 5 is improved by the inclusion of a detailed comparison between the instanton partition function and the D4-D2-D0 black hole entropy formula coming from supergravity
Expired Measures, Excess Duty Drawbacks and Causation: The Appellate Body Report in EU-PET (Pakistan)
Creators: name: Gnutzmann-Mkrtchyan, Arevik
name: Van Damme, Isabelle
Publisher: name: Cambridge : Cambridge Univ. Press
Year: 2020
Subjects: subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::330 | Wirtschaft
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::380 | Handel, Kommunikation, Verkehr

description: The Appellate Body report in EU-PET (Pakistan) raises distinct questions regarding the need for findings in relation to expired measures, the conditions under which duty drawback schemes may constitute subsidies and the causation methodology to apply under the SCM Agreement. We conclude that the report offers no clear guidance on whether the function and design of WTO dispute settlement require or preclude findings in case of expired measures. We welcome the Appellate Body's conclusion that, in case of duty drawback schemes, the financial contribution element of the subsidy is limited to the excess remission or drawback of import charges. Finally, although the Appellate Body rightly found that authorities are free to choose the methodology for the causation analysis provided that the analysis is complete and objective, the methodology used by the investigating authority in this case shows a number of deficiencies that were not recognized by the Appellate Body.
Extended orbital resonance model with hump-induced oscillations
Creators: name: Stuchlik, Zdenek
name: Slany, Petr
name: Torok, Gabriel
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Change of sign of the LNRF-velocity gradient has been found for accretion discs orbiting rapidly rotating Kerr black holes with spin a > 0.9953 for Keplerian discs and a > 0.99979 for marginally stable thick discs. Such a "humpy" LNRF-velocity profiles occur just above the marginally stable circular geodesic and could be related to oscillations of accretion discs. The frequency of such "hump"-induced oscillations can be identified with the maximal rate of change of the orbital velocity within the "humpy" profile. Therefore, we introduce an extended orbital resonance model (EXORM) of quasiperiodic oscillations (QPOs) assuming non-linear resonant phenomena between oscillations with the orbital epicyclic frequencies and the humpy frequency defined in a fully general relativistic way. The EXORM is developed for both Keplerian discs and perfect-fluid tori where the approximation of oscillations with epicyclic frequencies is acceptable. Clearly, the EXORM could be applied to the near-extreme Kerr black hole systems exhibiting relatively complex QPO frequency patterns. Assuming a Keplerian disc, it can be shown that in the framework of the EXORM, all the QPOs observed in the microquasar GRS 1915+105 could be explained, while it is not possible in the case of QPOs observed in the Galactic Centre source Sgr A*.
description: 18 pages, 6 figures
Hausmanniella patella Foissner 1984
Creators: name: Durán-Ramírez, Carlos Alberto
name: Dias, Roberto Júnio Pedroso
name: Estrada, Rosaura Mayén-
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Chromista
Ciliophora
Colpodea
Colpodida
Hausmanniellidae
Hausmanniella
Hausmanniella patella

description: Hausmanniella patella (Kahl, 1931) Foissner, 1984
Distribution. VENEZUELA: South margin of the Henri Pittier National Park, Biological Station Rancho Grande (Foissner 2016).
description: Published as part of Durán-Ramírez, Carlos Alberto, Dias, Roberto Júnio Pedroso & Estrada, Rosaura Mayén-, 2020, Checklist of ciliates (Alveolata: Ciliophora) that inhabit in bromeliads from the Neotropical Region, pp. 1-36 in Zootaxa 4895 (1) on page 25, DOI: 10.11646/zootaxa.4895.1.1, http://zenodo.org/record/4321437
title: A Novel Approach to Imaging using a Dual Field-of-View Sensor
Creators: name: Mehta, M
Publisher: name: University of Liverpool Repository
Year: 2017

description: Most modern aircraft, such as missile systems and unmanned aerial vehicles have limited size, weight, power and cost (SWaP-C) capability. As the defence budget for military forces such as the UK and US continue to shrink, the emphasis on SWaP-C continues to strengthen. Military forces require smart weapons capable of precision strike, with a priority on safety. System manufacturers understand these requirements and limitations, and in response, develop miniaturised systems and components and also aim to consolidate these, into a single miniaturised solution. The growth of remotely operated aircraft, offers an ever present need for better, cheaper imaging systems. In general, sensors and seekers tend to be the biggest contribution to the cost and weight of an aircraft. Often, multiple imaging systems are needed dependent on the operational requirements. In this thesis, a novel dual field-of-view imaging system/seeker is proposed, which uses a single imaging sensor to superimpose both a wide field-of-view and a narrow field-of-view image of the same scene, co-boresighted. This allows multiple operational requirements to function simultaneously. The wide field-of-view allows for continuous monitoring and surveillance of an area, whilst the narrow field-of-view enables target detection, identification and tracking capabilities. Secondly, this thesis proposes a novel image separation technique to facilitate the separation of the superimposed imagery, using only the geometric relationship between the two different field-of-views. The separation technique is then extended to operate over sequential frames (i.e. video), and to function with fixed cameras that exhibit (un)desired camera motions, such as vibrations or "jitter". The image quality of the separation technique is broadly analysed over a range of images with varying image characteristics and properties. A novel image quality metric (IQM) was also proposed in this thesis, and was used to analyse the image quality of the recovered images, and its performance compared to already available IQMs. Finally, the separation technique is enhanced to operate with motion cameras, which exhibit motions such as pan, tilt, zoom and rotate etc. The separation technique, in most cases, was found to provide image recovery, comparable to current image enhancement techniques, and moreover, found to be far more robust to errors in registration, compared to current techniques. Initial hardware designs for the dual field-of-view imaging system, designed in conjunction with Prof. Andy Harvey from the University of Glasgow and Dr. James Babbington from Qioptiq Ltd., a lens design and manufacturing company, has also been presented.
Commissioning the HI Observing Mode of the Beamformer for the Cryogenically Cooled Focal L-band Array for the GBT (FLAG)
Creators: name: Pingel, N. M.
name: Pisano, D. J.
name: Ruzindana, M.
name: Burnett, M.
name: Rajwade, K. M.
name: Black, R.
name: Jeffs, B.
name: Lorimer, D. R.
name: Roshi, D. Anish
name: Prestage, R.
name: McLaughlin, M. A.
name: Agarwal, D.
name: Chamberlin, T.
name: Hawkins, L.
name: Jensen, L.
name: Marganian, P.
name: Nelson, J. D.
name: Shillue, W.
name: Smith, E.
name: Simon, B.
name: Van Tonder, V.
name: White, S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We present the results of commissioning observations for a new digital beamforming back end for the Focal plane L-band Array for the Robert C. Byrd Green Bank Telescope (FLAG), a cryogenically cooled Phased Array Feed (PAF) with the lowest measured T_sys/eta of any PAF outfitted on a radio telescope to date. We describe the custom software used to apply beamforming weights to the raw element covariances to create research quality spectral line images for the new fine-channel mode, study the stability of the beam weights over time, characterize FLAG's sensitivity over a frequency range of 150 MHz, and compare the measured noise properties and observed distribution of neutral hydrogen emission from several extragalactic and Galactic sources with data obtained with the current single-pixel L-band receiver. These commissioning runs establish FLAG as the preeminent PAF receiver currently available for spectral line observations on the world's major radio telescopes.
description: 28 ages, 18 figures. Accepted for publication in the Astronomical Journal
Production of an Anise-and Woodruff-like Aroma by Monokaryotic Strains of Pleurotus sapidus Grown on Citrus Side Streams
Creators: name: Bürger, Friederike
name: Koch, Maximilian
name: Fraatz, Marco A.
name: Omarini, Alejandra B.
name: Berger, Ralf G.
name: Zorn, Holger
Publisher: name: Basel : MDPI
Year: 2022
Subjects: subject: (2S)-hydroxy-1-(4-methoxyphenyl)-1-propanone
subject: Aroma extract dilution analysis
subject: Monokaryons
subject: P-anisaldehyde
subject: Pleurotus sapidus
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: The production of natural flavors by means of microorganisms is of great interest for the food and flavor industry, and by-products of the agro-industry are particularly suitable as substrates. In the present study, Citrus side streams were fermented using monokaryotic strains of the fungus Pleurotus sapidus. Some of the cultures exhibited a pleasant smell, reminiscent of woodruff and anise, as well as herbaceous notes. To evaluate the composition of the overall aroma, liquid/liquid extracts of submerged cultures of a selected monokaryon were prepared, and the volatiles were isolated via solvent-assisted flavor evaporation. Aroma extract dilution analyses revealed p-anisaldehyde (sweetish, anisic-and woodruff-like) with a flavor dilution factor of 218 as a character impact compound. The coconut-like, herbaceous, and sweetish smelling acyloin identified as (2S)-hydroxy-1-(4-methoxyphenyl)-1-propanone also contributed to the overall aroma and was described as an aroma-active substance with an odor threshold in air of 0.2 ng L−1 to 2.4 ng L−1 for the first time. Supplementation of the culture medium with isotopically substituted L-tyrosine elucidated this phenolic amino acid as precursor of p-anisaldehyde as well as of (2S)-hydroxy-1-(4-methoxyphenyl)-1-propanone. Chiral analysis via HPLC revealed an enantiomeric excess of 97% for the isolated product produced by P. sapidus.
Muons enhancements at sea level in association with Swift-BAT and MILAGRO triggers
Creators: name: Augusto, C. R. A.
name: Navia, C. E.
name: Tsui, K. H.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Recently, triggers occurring during high background rate intervals have been reporter by Swift-BAT Gamma Ray Burst (GRB) detector. Among them, there were two on January 24, two on January 25, and two on February 13, and 18, all in 2008. These Swift-BAT triggers in most cases are probably noise triggers that occurred while Swift was entering the South Atlantic Anomaly (SAA). In fact, we show that they happen during a plentiful precipitation of high energy particles in the SAA, producing muons in the atmosphere detected by two directional telescopes at sea level, inside the SAA region (Tupi experiment). They look like sharp peaks in the muon counting rate. In the same category are two triggers from MILAGRO ground based detector, on January 25 and 31, 2008 respectively. In addition, the trigger coordinates are close to (and, in two cases, inside) the field of view of the telescopes. From an additional analysis in the behavior of the muon counting rate, it is possible to conclude that the events are produced by precipitation of high energy charged particles in the SAA region. Thus, due to its localization, the Tupi experiment constitutes a new sensor of high energy particle precipitation in the SAA, and it can be useful in the identification of some triggers of Gamma Ray Burst detectors.
description: 7pages, 5 figures
EAK (Hrsg.), NEIN zu Krieg und Militär - JA zu Friedensdiensten
Creators: name: Zademach, Wieland
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 58 Nr. 1 (2009): Ökumenische Rundschau, Band 58, Heft 1
Characterization of Laser Systems at 1550 nm Wavelength for Future Gravitational Wave Detectors
Creators: name: Meylahn, Fabian
name: Willke, Benno
Publisher: name: Basel : MDPI
Year: 2022
Subjects: subject: 1550 nm
subject: Gravitational wave detector
subject: Laser system
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: The continuous improvement of current gravitational wave detectors (GWDs) and the preparations for next generation GWDs place high demands on their stabilized laser sources. Some of the laser sources need to operate at laser wavelengths between 1.5 µm and 2.2 µm to support future detectors based on cooled silicon test masses for thermal noise reduction. We present detailed characterizations of different commercial low power seed laser sources and power amplifiers at the wavelength of 1550 nm with respect to performance parameters needed in GWDs. A combination with the most complete set of actuators was arranged as a master-oscillator power amplifier (MOPA), integrated into a stabilization environment and characterized. We present the results of this characterization that make this stabilized MOPA a highly relevant prototype for future GWDs as well as a low noise light source for other experiments in high precision metrology.
Open Access, dalla parte dei ricercatori: il ruolo delle biblioteche
Creators: name: Mangiaracina, Silvana
Publisher: name: Zenodo
Year: 2021
Subjects: open access
transformative agreements

description: Le biblioteche CNR per l’Open Access. Nel 2020 il CNR sottoscrive i primi contratti trasformativi e istituisce una voce di bilancio dedicata per tracciare le spese di APC (Article Processing Charges) sostenute dai ricercatori o dagli istituti. L’analisi delle pubblicazioni degli autori CNR fornisce informazioni indispensabili per negoziare i contratti con gli editori, visualizzare le tendenze e indirizzare le scelte future nei contratti.
description: {"references": ["Silvana Mangiaracina, & Cristina Morroni. (2018, May 15). Quanto costa l'accesso alle pubblicazioni scientifiche nell'era dell'Open Access? Una prima analisi delle pubblicazioni nel CNR. Zenodo. http://doi.org/10.5281/zenodo.1247497"]}
From Westphalia to post-Westphalia: European integration and the debate about economic and monetary union, 1980-1991
Creators: name: Merlingen, Michael
Publisher: name: University of British Columbia
Year: 2009

description: Most current studies of the EC/EU assume that the Realist ratio scripta of international relations no longer has anything important to say about politics in Western Europe. Three propositions are widely taken for granted. First, having been written in the language of power, Realism is no longer an appropriate guide to the interaction among Community governments. Especially economic integration represents the interests of societal actors who seek to maximize their material gains in the context of interdependence. Second, the Realist warnings of the dangers of international anarchy are irrelevant in the EC/EU. There governments have stopped to distrust each others' foreign policy intentions because they have come to believe in each others' commitment to the spirit of joint problem-solving. Third, the Realist proposition that states hold fast to sovereignty in order to preserve their self-help capabilities no longer applies to Western Europe. Responding to, the popular cries for welfare benefits (broadly defined), Community governments have made their peace with the fact that the effective, management of interdependence requires that the attributes of sovereignty are shared among a number of interlocking governmental and non-governmental actors. Together these Idealist arguments support the thesis that the EC/EU has by now evolved beyond the international state of nature and become a post-Westphalian utopia: a transnational polity in which power politics, Hobbesian fear and sovereignty-consciousness play little role in shaping policy. I probe the descriptive power of this Idealist thesis in detailed case studies of the French, German and British policy debates about European monetary integration and German reunification. I find that there are important strands of Idealism in the politics of integration. Yet, the EC/EU is not (yet) the post-Westphalian utopia portrayed by many students of integration. In short, Realism is not obsolete.
Crystal Nucleation and Growth of Inorganic Ionic Materials from Aqueous Solution: Selected Recent Developments, and Implications
Creators: name: Gebauer, Denis
name: Gale, Julian D.
name: Cölfen, Helmut
Publisher: name: Weinheim : Wiley-VCH
Year: 2022
Subjects: subject: 2-step nucleation
subject: classical nucleation theory
subject: crystal growth
subject: pre-nucleation clusters
subject: water
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: In this review article, selected, latest theoretical, and experimental developments in the field of nucleation and crystal growth of inorganic materials from aqueous solution are highlighted, with a focus on literature after 2015 and on non-classical pathways. A key point is to emphasize the so far underappreciated role of water and solvent entropy in crystallization at all stages from solution speciation through to the final crystal. While drawing on examples from current inorganic materials where non-classical behavior has been proposed, the potential of these approaches to be adapted to a wide-range of systems is also discussed, while considering the broader implications of the current re-assessment of pathways for crystallization. Various techniques that are suitable for the exploration of crystallization pathways in aqueous solution, from nucleation to crystal growth are summarized, and a flow chart for the assignment of specific theories based on experimental observations is proposed.
A Suzaku Observation of the Low-Ionization Fe-Line Emission from RCW 86
Creators: name: Ueno, Masaru
name: Sato, Rie
name: Kataoka, Jun
name: Bamba, Aya
name: Harrus, Ilana
name: Hiraga, Junko
name: Hughes, John P.
name: Kilbourne, Caroline A.
name: Koyama, Katsuji
name: Kokubun, Motohide
name: Nakajima, Hiroshi
name: Ozaki, Masanobu
name: Petre, Robert
name: Takahashi, Tadayuki
name: Tanaka, Takaaki
name: Tomida, Hiroshi
name: Yamaguchi, Hiroya
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The newly operational X-ray satellite Suzaku observed the southwestern quadrant of the supernova remnant (SNR) RCW 86 in February 2006 to study the nature of the 6.4 keV emission line first detected with the Advanced Satellite for Cosmology and Astronomy (ASCA). The new data confirm the existence of the line, localizing it for the first time; most of the line emission is adjacent and interior to the forward shock and not at the locus of the continuum hard emission. We also report the first detection of a 7.1 keV line that we interpret as the K-beta emission from low-ionization iron. The Fe-K line features are consistent with a non-equilibrium plasma of Fe-rich ejecta with n_{e}t
description: 6 pages with 6 figures. Accepted for PASJ Suzaku Special Issue (vo. 58, sp.1)
Science and survival: insights from Astronomy
Creators: name: van Dishoeck, Ewine F.
name: Elmegreen, Debra M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: This paper presents a brief overview of how astronomy can help society in COVID-19 times, and the lessons that come from studying our place in the Universe and the global coordination of scientific and outreach activities. Several examples coordinated by the International Astronomical Union are presented.
description: 7 pages, 5 figures, based on presentation at the Pontifical Academy of Sciences conference on Science and Survival: a focus on SARS-CoV-2 and connections between large-scale risks for life on this planet and opportunities of science to address them. http://www.casinapioiv.va/content/accademia/en/publications/acta/acta26.html
Z_2-Singlino Dark Matter in a Portal-Like Extension of the Minimal Supersymmetric Standard Model
Creators: name: McDonald, John
name: Sahu, Narendra
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We propose a Z_2-stabilised singlino (\barχ) as a dark matter candidate in extended and R-parity violating versions of the supersymmetric standard model. \barχ interacts with visible matter via a heavy messenger field S, which results in a supersymmetric version of the Higgs portal interaction. The relic abundance of \barχ can account for cold dark matter if the messenger mass satisfies M_S \lsim 10^{4} GeV. Our model can be implemented in many realistic supersymmetric models such as the NMSSM and nMSSM.
description: 7 pages LaTeX, 7 figures, version to be published in JCAP
title: Essays in Behavioural Contract Theory
Creators: name: Upton, H
Publisher: name: University of Liverpool Repository
Year: 2019

description: This thesis investigates the optimal provision of incentives when employment relationships are characterised by moral hazard and individuals have relative income concerns. In contrast to the existing literature, it is assumed that workers' social comparisons are not limited to others within the firm, but extend to larger groups in society. The thesis is organised into three chapters. The first chapter provides a comprehensive survey of the literatures which study incentive contracting when parties' preferences are characterised by the related concepts of inequity aversion or loss aversion. The chapter discusses the similarities between the two literatures, highlights some results which are relevant for both preference specifications and establishes the context in which the subsequent analysis should be placed. The second chapter examines a firm's optimal choice of contract for a worker whose preferences exhibit relative income concerns. This is formalised through use of a stylised model, in which workers have an aversion to falling behind the economy's average income. In this framework, it is shown that the optimal contract takes either a binary or ternary form and that firms benefit from the social comparisons of workers. In addition, there is an interdependence between the contracting of firm-worker pairs which results in an externality effect, so that firms could gain from collective decision making. Moreover, relative income concerns imply a lower economy-wide average wage, as well as a reduced level of inequality as measured by the Gini coefficient. The third chapter extends the foregoing analysis to an environment featuring a frictional labour market and unemployment; this allows for an investigation into how dismissal can be used by firms to create effort incentives. Dismissing workers for poor performance is shown to act as a substitute for explicit incentive pay, allowing firms to reduce wage costs. Some implications for labour market policies are derived. Increases in the minimum wage are found to aid the creation of incentives, lowering the bonus payment necessary to implement effort. In contrast, increases in unemployment benefits have a negative impact on incentives. These effects are shown to be stronger and more pronounced when workers have relative income concerns. Overall, the thesis provides several predictions and insights aimed at improving the understanding of incentive contracts, their structure and their effects on individual behaviour.
Length as a Paradigm for Understanding the Classical Limit
Creators: name: Kuzyk, Mark G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: It is regrettable that the quantum length of an object is rarely if ever discussed, because it provides an ideal pedagogical paradigm for understanding how a physicist uses classical intuition to define quantum properties and how such quantum properties behave as one would expect in the classical limit. It also provides for a way to understand many-particle states, and leads to interesting quantum behavior that challenges our intuition of measurement.
description: 17 Pages, 8 figures and 1 tables with embedded figures
Elicitation of causatives based on Payne (2002)
Creators: name: Parker, Verdena
name: Escamilla, Ramón
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: hup

description: Audio file VP-170811-09: Elicitation of causatives based on David Payne's article "Causatives in Asheninka: The case for a sociative source" (in "The Grammar of Causation and Interpersonal Manipulation," edited by M. Shibatani, pp. 489-505. Benjamins, 2002).