cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Particle Track Reconstruction with Quantum Algorithms
Creators: name: Tüysüz, Cenk
name: Carminati, Federico
name: Demirköz, Bilge
name: Dobos, Daniel
name: Fracas, Fabio
name: Novotny, Kristiane
name: Potamianos, Karolos
name: Vallecorsa, Sofia
name: Vlimant, Jean-Roch
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: Accurate determination of particle track reconstruction parameters will be a major challenge for the High Luminosity Large Hadron Collider (HL-LHC) experiments. The expected increase in the number of simultaneous collisions at the HL-LHC and the resulting high detector occupancy will make track reconstruction algorithms extremely demanding in terms of time and computing resources. The increase in number of hits will increase the complexity of track reconstruction algorithms. In addition, the ambiguity in assigning hits to particle tracks will be increased due to the finite resolution of the detector and the physical closeness of the hits. Thus, the reconstruction of charged particle tracks will be a major challenge to the correct interpretation of the HL-LHC data. Most methods currently in use are based on Kalman filters which are shown to be robust and to provide good physics performance. However, they are expected to scale worse than quadratically. Designing an algorithm capable of reducing the combinatorial background at the hit level, would provide a much cleaner initial seed to the Kalman filter, strongly reducing the total processing time. One of the salient features of Quantum Computers is the ability to evaluate a very large number of states simultaneously, making them an ideal instrument for searches in a large parameter space. In fact, different R\&D initiatives are exploring how Quantum Tracking Algorithms could leverage such capabilities. In this paper, we present our work on the implementation of a quantum-based track finding algorithm aimed at reducing combinatorial background during the initial seeding stage. We use the publicly available dataset designed for the kaggle TrackML challenge.
description: 7 pages, 6 figures, CHEP 2019 proceedings
Telomere dynamics in hematopoietic stem cells
Creators: name: Gylfadottir, Valgerdur
Publisher: name: University of British Columbia
Year: 2011

description: Hematopoietic stem cells (HSCs) are known to possess an exceptionally high replicative potential (Szilvassy SJ 2003). However, although they express detectable levels of telomerase, previous murine studies have suggested that HSCs still experience telomere shortening and are not immortal (Allsopp RC 2003). To further clarify the role of aging and clonal exhaustion in HSCs we used murine models to investigate the relationship between the number of cells transplanted, telomerase status, the length of their telomeres and their long term exhaustion. We initiated our studies by investigating the replicative potential of titrated numbers of highly purified HSCs. Results showed that bone marrow stemming from a single HSC could only be serially transplanted twice whereas bone marrow stemming from 10 HSCs could be serially transplanted at least three times. In order to better understand HSC replicative potential, we modified Flow-FISH for murine telomere length measurements. Our Flow-FISH protocol enables us to measure telomere lengths at different timepoints within individual mice, providing us with a unique insight into the telomere length status. With the primary goal of clarifying the role of aging and clonal exhaustion in HSC we aimed to investigate the relationship between telomerase status and HSC exhaustion. We set out to characterize the HSCs of TERT-KO mice that lack the mTERT gene encoding the telomerase enzyme (Erdmann N 2004). A comparison of the frequency of Kit⁺Sca⁺Lineage ̄ cells between the TERT-KO and its wild type counterpart revealed no difference. To our knowledge no studies have explored the rate of telomere shortening of HSC within individual mice over time. Using our optimised Flow-FISH based method we studied the rate of telomere shortening within primary BM transplant recipients, in relation to telomerase status. We find that telomere length is maintained over a nine month period post transplantation, regardless of telomerase status. Furthermore, serially transplanting titrated numbers of wild type and telomerase deficient WBM does not result in telomere shortening. However, despite the apparent maintenance of telomere length, reconstitution levels decrease with each transplantation regardless of transplant dose and telomerase status. These findings suggest the presence of telomere independent barriers, HSC dilution (Iscove NN 1999), alternative lengthening of telomeres or low HSC turnover following WBM transplantation.
Optimal Packing Behavior of some 2-block Patterns
Creators: name: Warren, Daniel
Publisher: name: arXiv
Year: 2004
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05A15 (primary), 05A16 (secondary)

description: In this paper, a result of Albert, Atkinson, Handley, Holton, and Stromquist [Electron. J. Combin. 9 (2002), #R5] which characterizes the optimal packing behavior of the pattern 1243 is generalized in two directions. The packing densities of layered patterns of type (1^a,a) and (1,1,b) are computed.
description: 12 pages, 5 figures, LaTeX2e. Submitted to Annals of Combinatorics
SHPO-CON-235: SHPO Concurrence Letter for Testing of Amphibious Combat Vehicles (ACV) and Amphibious Assault Vehicles (AAV)
Creators: name: Polanco, Julianne
Year: 2018

description: SHPO Concurrence Letter for Testing of Amphibious Combat Vehicles (ACV) and Amphibious Assault Vehicles (AAV).
Beziehungsgestaltung als primäre Schlüsselkompetenz im Schulalltag Das «STEP» Lehrertraining für einen respektvollen Umgang in der integrativen Schule
Creators: name: Läubli, Julia
Publisher: name: Zenodo
Year: 2018
Subjects: Sonderpädagogik
Beziehung
Integrative Schule
Masterarbeit

description: Die Beziehungsgestaltung von Lehrpersonen und Schüler und Schülerinnen im Schulalltag ist anspruchsvoll. Diese Masterthese zeigt konkrete Vorschläge zur Beziehungsgestaltung aus dem Buch «STEP» Lehrertraining auf. Es wird der Frage nachgegangen, ob es gelingt, die Lehrpersonen im Umgang in Beziehungsthematiken zu schulen. Eine kollegiale Beratung mit ergänzender Soziogrammerstellung in den Klassen dient der Einführung in das Trainingsprogramm «STEP». Anhand Interviews werden die Lehrpersonen nach vier Wochen Beobachtungszeit zu ihren Erfahrungen im Unterricht befragt. Methodisch wird ihre Einschätzung des Nutzens der kollegialen Beratung basierend auf dem «STEP» Lehrertraining auf die Beziehungsgestaltung mit einem inhaltsanalytischen Kategoriensystem qualitativ überprüft. Die Ergebnisse dieser Arbeit decken Zusammenhänge einer gelingenden Beziehungsgestaltung auf und implizieren Bedingungen, die es für eine erfolgreiche integrative Schulung der Kinder in der heutigen, modernen Zeit zu beachten gilt. Zudem wird Lehrpersonen aufgezeigt, wie sie ihre Ressourcen gezielt und kräftesparend einsetzen können.
Magnetic properties of rare earth and transition metal based perovskite type high entropy oxides
Creators: name: Witte, Ralf
name: Sarkar, Abhishek
name: Velasco, Leonardo
name: Kruk, Robert
name: Brand, Richard A.
name: Eggert, Benedikt
name: Ollefs, Katharina
name: Weschke, Eugen
name: Wende, Heiko
name: Hahn, Horst
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: High entropy oxides (HEO) are a recently introduced class of oxide materials, which are characterized by a large number of elements (i.e. five or more) sharing one lattice site which crystallize in a single phase structure. One complex example of the rather young HEO family are the rare-earth transition metal perovskite high entropy oxides. In this comprehensive study, we provide an overview over the magnetic properties of three perovskite type high entropy oxides. The compounds have a rare-earth site which is occupied by five different rare-earth elements, while the transition metal site is occupied by a single transition metal. In this way a comparison to the parent binary oxides, namely the orthocobaltites, -chromites and -ferrites is possible. X-ray absorption near edge spectroscopy (XANES), magnetometry and Mössbauer spectroscopy are employed to characterize these complex materials. In general, we find surprising similarities to the magnetic properties of the binary oxides, despite the chemical disorder on the rare-earth site. However distinct differences and interesting magnetic properties are also observed such as noncollinearity, spin reorientation transitions as well as large coercive fields of up to 2\,T at ambient temperature. Both the chemical disorder on the RE A-site, and the nature of the TM on the B-site play an important role in the physical properties of these high entropy oxides.
Multi-Source Remotely Sensed Data Combination: Projection Transformation Gap-Fill Procedure
Creators: name: Boloorani, Ali Darvishi
name: Erasmi, Stefan
name: Kappas, Martin
Publisher: name: FID GEO
Year: 2008

description: In this work a new gap-fill technique entitled projection transformation has been developed and used for filling missing parts of remotely sensed imagery. In general techniques for filling missing areas of an image break down into three main categories: first multi-source techniques that take advantages of other data sources (e.g. using cloud free images to fabricate the cloudy areas of other images); the second ones that fabricate the gap areas using non-gapped parts of an image itself, this group of techniques are referred to as single-source gap-fill procedures; and the third group which applies methods that are a combination of both mentioned techniques, therefore they are called hybrid gapfill procedures. Here a new developed multi-source methodology called “projection transformation for filling a simulated gapped area in Landsat7/ETM+ imagery” is introduced. The auxiliary imagery for filling the gaps is an earlier obtained L7/ETM+ imagery. Quality of the technique was evaluated from three points of view: statistical accuracy measuring, visual comparison, and post classification accuracy assessment. These evaluation indicators are compared to the results obtained from a commonly used technique by the USGS, the Local Linear Histogram Matching (LLHM) [1]. Results show the superiority of our technique over LLHM in almost all aspects of accuracy.
SEMANTIC CORRELATIONS IN THE DISCURSIVE DYNAMICS OF TRANSLATION
Creators: name: Rasulova, Dildora
Publisher: name: Zenodo
Year: 2024

description: The article deals with the major role of developing of semantic correlations in discursive dynamics of translation in English. The author concludes that the process of comparative linguistic researches and translation studies are considered an integral part of learning languages, as the language is the means of communication.
Hypercomplex-Valued Recurrent Correlation Neural Networks
Creators: name: Valle, Marcos Eduardo
name: Lobo, Rodolfo Anibal
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Neural and Evolutionary Computing (cs.NE)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Recurrent correlation neural networks (RCNNs), introduced by Chiueh and Goodman as an improved version of the bipolar correlation-based Hopfield neural network, can be used to implement high-capacity associative memories. In this paper, we extend the bipolar RCNNs for processing hypercomplex-valued data. Precisely, we present the mathematical background for a broad class of hypercomplex-valued RCNNs. Then, we provide the necessary conditions which ensure that a hypercomplex-valued RCNN always settles at an equilibrium using either synchronous or asynchronous update modes. Examples with bipolar, complex, hyperbolic, quaternion, and octonion-valued RCNNs are given to illustrate the theoretical results. Finally, computational experiments confirm the potential application of hypercomplex-valued RCNNs as associative memories designed for the storage and recall of gray-scale images.
Echo State Networks trained by Tikhonov least squares are L2(μ) approximators of ergodic dynamical systems
Creators: name: Hart, Allen G
name: Hook, James L
name: Dawes, Jonathan H P
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Dynamical Systems (math.DS)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Echo State Networks (ESNs) are a class of single-layer recurrent neural networks with randomly generated internal weights, and a single layer of tuneable outer weights, which are usually trained by regularised linear least squares regression. Remarkably, ESNs still enjoy the universal approximation property despite the training procedure being entirely linear. In this paper, we prove that an ESN trained on a sequence of observations from an ergodic dynamical system (with invariant measure $μ$) using Tikhonov least squares regression against a set of targets, will approximate the target function in the $L^2(μ)$ norm. In the special case that the targets are future observations, the ESN is learning the next step map, which allows time series forecasting. We demonstrate the theory numerically by training an ESN using Tikhonov least squares on a sequence of scalar observations of the Lorenz system.
description: 11 pages, 5 figures
Recensión al libro de César Cierco Seira: "Administración pública y salud colectiva: El marco jurídico de la protección frente a las epidemias y otros riesgos sanitarios", Comares, Granada, 2006, 291 págs.
Creators: name: Rafael Esteban Nieto
Publisher: name: Zenodo
Year: 2024
Subjects: subject: Public administration
subject: Law
subject: FOS: Law

description: La recensión que se realiza a esta extraordinaria obra del Profesor de Derecho Administrativo César Cierco Seira, titulada "Administración pública y salud colectiva: El marco jurídico de la protección frente a las epidemias y otros riesgos sanitarios", analiza este libro en el que su autor realiza una muy buena colección de todos los aspectos que deben tenerse en cuenta acerca de la salud colectiva: las principales dificultades que plantea la función pública de protección o tutela de la salud colectiva; el exhaustivo análisis de sus principios integradores; la dimensión organizativa de la salud colectiva; y lo que a nosotros más nos interesa, la formas de actuación de la administración, así como las técnicas y medidas de intervención o limitación administrativa.
Multiple-field inflation and the CMB
Creators: name: van Tent, Bartjan
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this paper, we investigate some consequences of multiple-field inflation for the cosmic microwave background radiation (CMB). We derive expressions for the amplitudes, the spectral indices and the derivatives of the indices of the CMB power spectrum in the context of a very general multiple-field theory of slow-roll inflation, where the field metric can be non-trivial. Both scalar (adiabatic, isocurvature and mixing) and tensor perturbations are treated and the differences with single-field inflation are discussed. From these expressions, several relations are derived that can be used to determine the importance of multiple-field effects observationally from the CMB. We also study the evolution of the total entropy perturbation during radiation and matter domination and the influence of this on the isocurvature spectral quantities.
description: 24 pages. References added, some very minor textual changes, matches version to be published in CQG
A Simple Model for the Checkerboard Pattern of Modulated Hole Densities in Underdoped Cuprates
Creators: name: Rice, T. M.
name: Tsunetsugu, Hirokazu
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A simple model is proposed as a possible explanation for the checkerboard pattern of modulations in the hole density observed in recent tunneling experiments on underdoped cuprates. Two assumptions are made; first, an enhanced hole density near the acceptor dopants and secondly short range correlations in the positions of these dopants caused by their electrostatic and anisotropic elastic interactions. Together these can lead to a structure factor in qualitative agreement with experiment.
description: 4 pages, 4 figures; Fig.3 and Fig.4(c) added, typos corrected, references added
title: Optophone design: optical-to-auditory vision substitution for the blind
Creators: name: O'Hea, Adrian Ralph
Publisher: name: The Open University
Year: 1994

description: An optophone is a device that turns light into sound for the benefit of blind people. The present project is intended to produce a general-purpose optophone to be worn on the head about the house and in the street, to give the wearer a detailed description in sound of the'scene he is facing. The device will therefore consist'of an'electronic camera, some signal-processing electronics, earphones`, and a battery. The two major problems are the derivation of (a) the most suitable mapping from images to sounds, and (b) an algorithm to perform the mapping in real'time on existing electronic components. This thesis concerns problem (a). Chapter 2 goes into the general scene-to-sound mapping problem in some detail'and presents the work of earlier investigators. Chapter 3 1- discusses the design of tests to evaluate the performance of candidate mappings. A theoretical performance test (TPT) is derived. Chapter 4 applies the TPT to the most obvious mapping, the cartesian piano transform. Chapter 5 applies the TPT to a mapping based on the cosine transform. Chapter 6 attempts to derive a mapping by principal component analysis, using the inaccuracies of human sight and hearing and the statistical properties of real scenes and sounds. Chapter 7 presents a complete scheme, implemented in software, for representing digitised colour scenes by audible digitised stereo sound. Chapter 8 tries to decide how'many numbers are required to specify a steady spectrum with no noticeable degradation. Chapter 9 looks'at a scheme designed to produce more natural-sounding sounds related to more meaningful portions of the scene. This scheme maps windows in the scene to steady spectral patterns of short duration, the location of the window being conveyed by simulated free-field listening. Chapter 10 gives detailed recommendations as to further work.
title: A case study of distance education and development in Jamaica : a study of three distance education organisations and their contribution to development
Creators: name: Skyers, Richard
Publisher: name: The Open University
Year: 1995

description: This study examines three distance education organisations in Jamaica in order to understand their role as contributors to Jamaica's development. The three distance education organisations are: 1. The Ministry of Education Teacher Education Programme. 2. The University of the West Indies Distance Teaching Experiment. (UWIDITE) 3. The Jamaican Movement for the Advancement of Literacy. (JAMAL) Jamaica's most recent Development Plan is also examined for an understanding of how distance education is linked into that plan. The study is concerned with the contribution that distance education can make towards Jamaica's development, the problems that inhibit development and the conditions that assist development. It is therefore concerned with the political and economic structures in Jamaica and how these affect the function of distance education in development strategies. A qualitative approach, using the case study method is adopted, for this study, which enables the work of the institutions to be analysed in conjunction with attitudes of individuals who are involved in distance education in various capacities, for example as teachers, administrators, politicians, aid negotiators, volunteers and close observers. A qualitative analysis also helped in the understanding of the structure and functions of the organisations studied. Because benefits can accrue to a society in terms of growth in its Gross National Product, without such benefits reaching the whole population, the political nature of Jamaica was examined particularly in terms of the ideology of the main political parties in order to determine the difference, if any, between them. How the ideology was acquired or developed is also important. The study also examined the cultural and economic context in which attempts are being made to develop the society. This includes the internal relationships within the country and its external relationships with countries that give bilateral aid and organisations that 'assist' with multilateral aid. The study concludes that Jamaica is at a serious disadvantage in its attempt to implement 'development' policies because it is not properly in charge of its own destiny. The countrys currency is subject to sudden devaluations which can increase the cost of development without the possibility of being able to plan for the increases in costs. Ways of overcoming these difficulties may be found in less political opportunism, improved inter-departmental co-operation in determining development priorities and a unified political approach to multi-lateral and bi-lateral aid agencies by the main political parties. There may be implications for other developing countries whose currencies continue to decline in relation to Western currencies.
title: The colonisation of treated water systems by Legionella pneumophila
Creators: name: Rogers, Julie
Publisher: name: The Open University
Year: 1994

description: A two-stage continuous chemostat model of a water system was developed to investigate the ecology of L. pneumophila. The inoculum was derived from a calorifier responsible for an outbreak of Legionnaires' disease and contained virulent L. pneumophilaa serogroup 1 along with associated microorganisms including protozoa. The model system was supplied with filter sterilised tap water as the sole nutrient source for the growth of the mixed microbial population and was used to investigate both planktonic and attached growth.

The characteristics and reproducibility of biofilm formation on glass surfaces were examined and this provided insights into the three dimensional structure of biofilm formation. Examination of the biofilms using immunogold labelling techniques demonstrated that cells of L. pneumophila were present within the biofilm as microcolonies, this could indicate that the pathogen could grow extracellularly by receiving nutrient from the bacterial consortium.

The influence of plumbing material selection on the growth of L. pneumophila was investigated using the model system. The results obtained indicated that copper was an inhibitory material in terms of both biofouling and the growth of L. pneumophila. Latex and ethylene-propylene which are used for sealing plumbing systems were found to be nutrient supplying materials. These elastomeric materials supported extensive biofilms after only 24 hrs and contained high numbers of the pathogen. Steel and plastic materials supported biofilms which were intermediate in terms of total biofouling and growth of the pathogen.

The influence of water temperature on biofilm formation and the inclusion of L. pneumophila was also investigated. At 20 °C and 50 °C L. pneumophila was present in biofilms in low numbers. At 40 °C L. pneumophila was present in the planktonic and biofilm phases in high numbers and accounted for as much as 50 % of the biofilm flora. At 60 °C the pathogen was absent from the model system. Copper was found to be inhibitory to colonisation and growth of L. pneumophila.

The model system was used to develop biofilms on the surface of appropriate plumbing materials and then these were used to determine efficiency of commercially available biocides. The results demonstrated that attached bacterial populations were more resistant to biocide treatment than the planktonic phase. However, even the planktonic populations were able to survive the recommended biocide doses suggested by the manufacturers. The implications of the data on the ecology of the pathogen is discussed in relationship to the prevention of infection. The data provides additional information on the dynamic relationship which exist within biofilms and gives additional understanding on biofilm formation.
Uniform Lieb-Thirring inequality for the three dimensional Pauli operator with a strong non-homogeneous magnetic field
Creators: name: Erdos, Laszlo
name: Solovej, Jan Philip
Publisher: name: arXiv
Year: 2003
Subjects: subject: Mathematical Physics (math-ph)
subject: Spectral Theory (math.SP)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 81Q10; 81Q70

description: The Pauli operator describes the energy of a nonrelativistic quantum particle with spin 1/2 in a magnetic field and an external potential. A new Lieb-Thirring type inequality on the sum of the negative eigenvalues is presented. The main feature compared to earlier results is that in the large field regime the present estimate grows with the optimal (first) power of the strength of the magnetic field. As a byproduct of the method, we also obtain an optimal upper bound on the pointwise density of zero energy eigenfunctions of the Dirac operator. The main technical tools are: (i) a new localization scheme for the square of the resolvent of a general class of second order elliptic operators; (ii) a geometric construction of a Dirac operator with a constant magnetic field that approximates the original Dirac operator in a tubular neighborhood of a fixed field line. The errors may depend on the regularity of the magnetic field but they are uniform in the field strength.
description: latex file. Revised final version: typos corrected, the definition of the lengthscale simplified, references added/updated
Constraints on Decaying Sterile Neutrinos from Solar Antineutrinos
Creators: name: Hostert, Matheus
name: Pospelov, Maxim
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Solar neutrino experiments are highly sensitive to sources of $ν\to\overlineν$ conversions in the $^8$B neutrino flux. In this work we adapt these searches to non-minimal sterile neutrino models recently proposed to explain the LSND, MiniBooNE, and reactor anomalies. The production of such sterile neutrinos in the Sun, followed the decay chain $ν_4 \to νϕ\to νν\overlineν$ with a new scalar $ϕ$ results in upper limits for the neutrino mixing $|U_{e4}|^2$ at the per mille level. We conclude that a simultaneous explanations of all anomalies is in tension with KamLAND, Super-Kamiokande, and Borexino constraints on the flux of solar antineutrinos. We then present other minimal models that violate parity or lepton number, and discuss the applicability of our constraints in each case. Future improvements can be expected from existing Borexino data as well as from future searches at Super-Kamiokande with added Gd.
description: 14 pages, 7 figures, 1 table. v2: included neutral-current matter potential, derived new constraints from recent KamLAND and Super-Kamiokande data, and added new plots. Conclusions unchanged. Accepted for publication in Phys.Rev.D
Entanglement structure of adjoint representation of unitary group and tomography of quantum states
Creators: name: Man'ko, V. I.
name: Marmo, G.
name: Sudarshan, E. C. G.
name: Zaccaria, F.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The density matrix of composite spin system is discussed in relation to the adjoint representation of unitary group U(n). The entanglement structure is introduced as an additional ingredient to the description of the linear space carrying the adjoint representation. Positive maps of density operator are related to random matrices. The tomographic probability description of quantum states is used to formulate the problem of separability and entanglement as the condition for joint probability distribution of several random variables represented as the convex sum of products of probabilities of random variables describing the subsystems. The property is discussed as a possible criterion for separability or entanglement. The convenient criterion of positivity of finite and infinite matrix is obtained. The U(n)-tomogram of a multiparticle spin state is introduced. The entanglement measure is considered in terms of this tomogram.
description: Latex, material of talk at conference in Bregenz, July 2003, accepted for publication by Journal of Russian Laser Research
title: Temporal and Geographical Variation in Martian Surface Dust Lifting Processes
Creators: name: Chapman, Rhian
Publisher: name: The Open University
Year: 2018

description: Numerical experiments were completed examining the variability of key aspects of the Martian dust cycle and investigating their importance in predicting conditions for spacecraft atmospheric descent and landing. The dust cycle – lifting, transportation and deposition – is a significant Martian climate cycle. The geographical and temporal variation in dust lifting processes were investigated using a Martian Global Circulation Model. The geographical representation of Martian dust lifting by wind stress was used to explore the experimental impact of changes in model resolution. It was found that increasing the resolution improved the model's geographical representation of observed dust lifting regions, such as resolving important storm-forming regions in the northern hemisphere. This improvement was unanticipated in the case of changes in vertical resolution, and the horizontal resolution work identified an important length scale for dust lifting (of the order of 100 kilometres). The temporal variation of a dust lifting process was investigated through experiments focusing on the diurnal variability of Martian dust devils (small-scale convective vortices). This research compared results with published lander and rover observations and found that dust devils were more active during morning hours than anticipated, suggesting that the generally accepted description of dust devil behaviour on Mars is incomplete. Predictions were made of the atmospheric and near-surface environment encountered by the ESA ExoMars Schiaparelli landing module. The experiments produced a reasonable representation of atmospheric quantities along the descent trajectory and were able to generate similar low-altitude wind fields to those reported by the spacecraft. The global-scale model also out-performed a higher resolution mesoscale model. These findings are significant in the field of Martian climate modelling, are important for the planning of Martian dust devil observation campaigns and future missions to the planet`s surface, and will also be relevant to researchers operating atmospheric models for other planetary bodies.
title: An investigation of ground based and aeromagnetic data over the Cairngorm and other Caledonian granites in the UK
Creators: name: Stokes, T. M.
Publisher: name: The Open University
Year: 1995

description: The aeromagnetic map of Great Britain shows a number of granites associated with magnetic anomalies. One of the largest of these granites, the Cairngorm pluton, has a complex overlying aeromagnetic anomaly, yet measurements show that the surface rocks have a magnetic susceptibility too low to account for this aeromagnetic field. The purpose of this investigation was to determine the likely reasons for this discrepancy employing a range of computer based techniques, and using new land-based data. Potential field data for the Cairngorm area, together with a region of the Southern Uplands, was subjected to frequency domain reduction and filtering. Hand specimens from the granite and host rock were collected for susceptibility measurements. The results have been integrated with profile models to explain the variations observed in the aeromagnetic and ground based magnetic field. The Cairngorm granites appear to be zoned at depth, with a variable thickness cap of low density, low magnetic susceptibility granite. The presence of intermediate composition rock in the upper reaches of the granite mass provides evidence for stoping, whilst the presence of intermediate composition rock at deeper levels is thought to be due to multiple magma pulses and/or differentiation. The Loch Doon granite has a low magnetic susceptibility subsurface core extending off its eastern flank. A number of correlations between the geophysics and geochemistry of the granites investigated were noted. The concept of gravrnag space has been developed and applied as a framework in which to explore the relationships between the granites of Scotland and northern England. Relationships between the background geophysics and the geochemistry of granites in the area of the proposed Iapetus Subduction zone have also been investigated.
title: Spirit, discipleship, community : the contemporary significance of Anabaptist hermeneutics
Creators: name: Murray, Stuart Wood
Publisher: name: The Open University
Year: 1994

description: The objectives of this thesis are twofold: to undertake a comprehensive survey of the hermeneutics of early Anabaptism (1525-1560) in order to clarify the principles operating within this movement and to distinguish Anabaptist hermeneutics from other sixteenth century systems of biblical interpretation; and, on the basis of this survey, to explore ways in which Anabaptist hermeneutics might contribute to contemporary hermeneutical developments. Anabaptist hermeneutics offered a coherent and distinctive approach to biblical interpretation in the sixteenth century. Its basic principles can be discovered from the writings of Anabaptist leaders and the practice of Anabaptist congregations. Six convictions characterised this hermeneutics. Scripture was sufficiently clear for all believers to be enfranchised as interpreters. Scripture must be interpreted in the light of Jesus Christ, its focal point. The New Testament must be accorded priority and the Old Testament interpreted in the light of the New. The Holy Spirit was the interpreter, whose guidance must be actively sought. Only those committed to discipleship and obedience to Scripture should expect such guidance. The congregation was the hermeneutic community where all believers could contribute to the interpretive process and where the Spirit's guidance was anticipated. Although these principles were not consciously synthesised into an integrated system, they overlapped, refined and qualified each other. Anabaptist hermeneutics has been neglected, regarded as naive, derivative and unsophisticated. My thesis is that this treatment is unjustified and that the rediscovery of Anabaptist hermeneutics provides an important resource with significant insights on issues of contemporary hermeneutical concern. Anabaptist hermeneutics is neither Catholic nor Protestant. It represents an alternative approach to biblical interpretation which has a distinctive contribution to make to contemporary hermeneutics. Anabaptist hermeneutics offers a critique of Constantinian presuppositions that has important perspectives for hermeneutical developments in post- Constantinian societies. It offers informative parallels with Latin American hermeneutics. It can assist in the development of hermeneutics appropriate for the Charismatic Movement. Its hermeneutic community model provides fresh insights on the relationship between churches and scholars.
Disorder, inhomogeneity and spin dynamics in f-electron non-Fermi liquid systems
Creators: name: MacLaughlin, D. E.
name: Heffner, R. H.
name: Bernal, O. O.
name: Ishida, K.
name: Sonier, J. E.
name: Nieuwenhuys, G. J.
name: Maple, M. B.
name: Stewart, G R
Publisher: name: arXiv
Year: 2004
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Muon spin rotation and relaxation ($μ$SR) experiments have yielded evidence that structural disorder is an important factor in many f-electron-based non-Fermi-liquid (NFL) systems. Disorder-driven mechanisms for NFL behaviour are suggested by the observed broad and strongly temperature-dependent $μ$SR (and NMR) linewidths in several NFL compounds and alloys. Local disorder-driven theories (Kondo disorder, Griffiths-McCoy singularity) are, however, not capable of describing the time-field scaling seen in muon spin relaxation experiments, which suggest cooperative and critical spin fluctuations rather than a distribution of local fluctuation rates. A strong empirical correlation is established between electronic disorder and slow spin fluctuations in NFL materials
description: 24 pages, 15 figures, submitted to J. Phys.: Condens. Matter
Zmiany powierzchni uprawy a opłacalność produkcji ziemniaków w Polsce
CHANGES IN THE PRODUCTION AREA VS. PROFITABILITY OF POTATOES IN POLAND
Creators: name: Tuka, Paulina
name: Tuka, Paulina
Publisher: name: Unknown
Year: 2017
Subjects: subject: Agribusiness
subject: rynek ziemniaków
subject: produkcja ziemniaków
subject: gospodarstwo rolne

description: The aim of this paper was to present the changes occurring in the potato industry in Poland from the perspective of farms of producers. For several years in Poland is decreasing acreage of potatoes in the total crop structure throughout the country. The choice of such a labor-intensive crop in terms of macroeconomic changes in the potato industry and the climate requires changes in the functioning of potato farms and adapting to market needs. The article analyzes secondary sources from the Institute of Economics and Food Economy (IEiGŻ) and the Central Statistical Office (GUS).
PAYMENT coupled TO PRODUCTION – SECTORAL IMPACTS SPECIFIC FEATURES IN CASE OF SOY PRODUCTION
PŁATNOŚCI ZWIĄZANE Z WIELKOŚCIĄ PRODUKCJI – WPŁYW SEKTOROWY NA PODSTAWIE DANYCH O PRODUKCJI SOI
Creators: name: Vásáry, Miklós
name: Domán, Csaba
name: Vásáry, Miklós
name: Domán, Csaba
Publisher: name: Unknown
Year: 2017
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Agricultural Policy (CAP)
subject: voluntary coupled support
subject: protein crops
subject: soybean

description: Between 2014 and 2020 there have been substantial rearrangements within the Common Agricultural Policy, which – in harmony with the former reform phases of CAP – has aimed to implement real conceptual and technical changes in the system of direct subsidies and market measures. As a result of this process, the system of subsidies coupled to production could be extended in Hungary, too. This new approach, which was totally different from the previous reform phases, does not restrict, but rather expands the possible amount and areas of implementation. This, in many cases, may result in a number of favourable impacts for the beneficiary sectors. Sectors, which have not received any EU subsidies before, can be supported and the member states have substantial say in forming the conditions according to their needs. In general, it is still a question, what effects can be expected, what actual consequences of the measures can be quantified on the basis of the currently available information. Following these, the main goal of this paper is to characterize the consequences of the coupled support payment by the soy production.
Quantum fluctuations of the compact phase space cosmology
Creators: name: Artigas, Danilo
name: Crowe, Sean
name: Mielczarek, Jakub
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In the recent article Phys. Rev. D 100, no. 4, 043533 (2019) a compact phase space generalization of the flat de Sitter cosmology has been proposed. The main advantages of the compactification is that physical quantities are bounded, and the quantum theory is characterized by finite dimensional Hilbert space. Furthermore, by considering the $\mathbb{S}^2$ phase space, quantum description is constructed with the use $SU(2)$ representation theory. The purpose of this article is to apply effective methods to extract semi-classical regime of the quantum dynamics. The analysis is performed both without prior solving of the quantum constraint and by extracting physical Hamiltonian of the model. At the effective level, the results of the two procedures are shown to be equivalent. We find a nontrivial behavior of the fluctuations around the recollapse of the universe, which is distinct from what is found after quantization with the standard flat phase space. The behavior is reflected at the level of the modified Friedmann equation with quantum back-reaction effects, which is derived. Finally, an unexpected relation between the quantum fluctuations of the cosmological sector and the holographic Bousso bound is shown.
description: 13 pages, 4 figures
Efektywność stosowania środków technicznych w gospodarstwach rodzinnych korzystających z dofinansowania Unii Europejskiej
EFFECTIVENESS OF TECHNICAL EQUIPMENT IN FAMILY FARMS OBTAINING SUBSIDIES FROM THE EUROPEAN UNION
Creators: name: Wasąg, Zbigniew
name: Wasąg, Zbigniew
Publisher: name: Unknown
Year: 2017
Subjects: subject: Agribusiness
subject: efektywność
subject: środki mechanizacji
subject: kwota pomocy
subject: gospodarstwo rodzinne

description: The aim of the study was to assess the effectiveness of technical equipment with regard to nett commodity production and the amount of subsidy in family farms. In the years 2004-2009, 70 family farms were studied and grouped according to: amount of subsidies, area of arable land, economic size units and business income. The analysis of the relationship between production outputs and inputs made it possible to assess the effectiveness of the used means of mechanization. The effectiveness of use of technical equipment (Revenue Unit RU/costs of use of machines) increased with an increase in the amount of subsidy and the difference between the highest and the lowest amount was more than threefold. The index of the effectiveness of agricultural technical equipment (amount of subsidy/cost of using machines) was the highest in farms: area of 50-70 ha AR, amount of subsidy 100-150 thousand PLN and economic size 16-40 ESU. Effectiveness with respect to the amount of subsidy and the replacement value of machines was the highest in farms with the highest values of the grouping criteria.
The Ellipticity of the Disks of Spiral Galaxies
Creators: name: Ryden, Barbara S.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The disks of spiral galaxies are generally elliptical rather than circular. The distribution of ellipticities can be fit with a log-normal distribution. For a sample of 12,764 galaxies from the Sloan Digital Sky Survey Data Release 1 (SDSS DR1), the distribution of apparent axis ratios in the i band is best fit by a log-normal distribution of intrinsic ellipticities with ln epsilon = -1.85 +/- 0.89. For a sample of nearly face-on spiral galaxies, analyzed by Andersen and Bershady using both photometric and spectroscopic data, the best fitting distribution of ellipticities has ln epsilon = -2.29 +/- 1.04. Given the small size of the Andersen-Bershady sample, the two distribution are not necessarily inconsistent. If the ellipticity of the potential were equal to that of the light distribution of the SDSS DR1 galaxies, it would produce 1.0 magnitudes of scatter in the Tully-Fisher relation, greater than is observed. The Andersen-Bershady results, however, are consistent with a scatter as small as 0.25 magnitudes in the Tully-Fisher relation.
description: 19 pages, 5 figures; ApJ, accepted
Zur Stratigraphie des Saale-Glazials in Niedersachsen und zu Korrelationsversuchen mit Nachbargebieten
Creators: name: Meyer, Klaus-Dieter
Publisher: name: Geozon Science Media
Year: 2005

description: Von verschiedener Seite unternommene Korrelations-Versuche zum Saale-Komplex in Norddeutschland sind der Anlass, erneut die Stratigraphie dieses Zeitraums aus niedersächsischer Sicht darzustellen. Da das Holstein-Interglazial der Typus-Bohrung Bossel kürzlich mit der Th/U- Methode in Tiefsee-Stufe 9 datiert wurde, kommen für die jüngeren Thermomere Schöningen und Reinsdorf die Abschnitte 9a bis 7 in Frage. Die Speere aus dem Reinsdorf sind daher auf rund 270 000 - 240 000 Jahre zu veranschlagen. Die durch drei Eisvorstöße gegliederte saaleeiszeitliche Glaziärfolge wird kurz charakterisiert. Bisher unpublizierte Leitgeschiebezählungen aus SW-Niedersachsen werden vorgestellt; zusammen mit Aufschlussuntersuchungen und Kartierungen lassen sich daraus keine weiteren Unterteilungen des Haupt-Drenthe-Stadiums ableiten. Der zweite Saale-Vorstoß („Jüngere Drenthe") sollte aus stratigraphischen und petrographischen Gründen nicht zum Warthe-Stadium gestellt werden. Letzteres ist durch ein ostbaltisches Geschiebespektrum charakterisiert und mit den jeweils jüngsten saalezeitlichen Vorstößen der Nachbarländer zu korrelieren. Warmzeitliche organogene Sedimente zwischen den Eisvorstößen fehlen und sind aufgrund der geologischen Situation unwahrscheinlich.
description: research
Valence instability across magnetostructural transition in USb$_2$
Creators: name: Brubaker, Z. E.
name: Xiao, Y.
name: Chow, P.
name: Kenney-Benson, C.
name: Smith, J. S.
name: Cynn, H.
name: Reynolds, C.
name: Butch, N. P.
name: Zieve, R. J.
name: Jeffries, J. R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We have performed pressure dependent X-ray diffraction and resonant X-ray emission spectroscopy experiments on USb$_2$ to further characterize the AFM-FM transition occurring near 8 GPa. We have found the magnetic transition coincides with a tetragonal to orthorhombic transition resulting in a 17% volume collapse as well as a transient $\textit{f}$-occupation enhancement. Compared to UAs$_2$ and UAsS, USb$_2$ shows a reduced bulk modulus and transition pressure and an increased volume collapse at the structural transition. Except for an enhancement across the transition region, the $\textit{f}$-occupancy decreases steadily from 1.96 to 1.75.
description: 9 pages, 10 figures
Sieć innowacji w rolnictwie – istota, cele i uwarunkowania
NETWORK OF INNOVATIONS IN AGRICULTURE – ESSENCE, AIMS AND CONDITIONS
Creators: name: Wiatrak, Andrzej Piotr
name: Wiatrak, Andrzej Piotr
Publisher: name: Unknown
Year: 2017
Subjects: subject: Agribusiness
subject: innowacja
subject: rolnictwo
subject: agrobiznes
subject: sieć
subject: współpraca
subject: rozwój

description: The content of the paper consists of the following issues: essence of innovation networks and conditions of their functioning, basics activities of the innovation network in agriculture and their scope. The aim of the article was to show that innovation networks are a tool to shape the development and structural changes in accordance with the directions of innovation policy. The observations – based on the analysis of relevant literature, selected documents of the EU (including Poland) and the author’s own reflections – confirm this relationship, especially with regard to the preparation of changes, which sets out the following priority areas of innovation networks in agribusiness: increased agricultural productivity, output, and resource efficiency, innovation in support of the bio-based economy, biodiversity, ecosystem services, and soil functionality, innovative products and services for the integrated supply chain and also quality and safety of food.