cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Energy futures
Creators: name: Wutte, Hanna Sophia
Publisher: name: TU Wien
Year: 2017
Subjects: subject: Energie Futures
subject: Heath Jarrow Morton Methodologie
subject: Energy futures
subject: Heath Jarrow Morton methodology

description: Die vorliegende Arbeit beschäftigt sich mit der Entwicklung eines Heath-Jarrow-Morton-Modells für den Forward-Preisprozess von Strom, das von einem d-dimensionalen Lévy-Prozess getrieben wird. Aus der Spezifikation des Forwards resultiert eine Darstellung für den Energie-Futures Preis. Weiters wird der Forward im Sinne von Musiela umparametrisiert und eine angemessene endlich dimensionale Realisierung für diesen Prozesses angenommen. Die darauf folgende Modellkalibrierung geschieht auf Basis von PHELIX Base-Load Futures Kontrakten, die an der Europäischen Strombörse (EEX) gehandelt werden. Diese Justierung wird sowohl anhand der gewöhnlichen als auch gewichteten Methode der kleinsten Fehlerquadrate durchgeführt und deren Resultate verglichen. Zudem werden mögliche Anwendungen des vorgestellten Modells diskutiert. Hierzu zählen die Simulation aus dem Modell sowie die Bestimmung von Kovarianzstrukturen im Markt.
description: We develop a model of Heath-Jarrow-Morton type for the forward price of energy that is driven by a d-dimensional Lévy process. The specification of the forward yields a representation of the futures price of electricity as well. Moreover, a finite dimensional realization for the forward in Musiela parametrisation is assumed. The model is then fitted using base-load prices of PHELIX futures contracts traded on the European Energy Exchange. This calibration is performed using both ordinary and weighted least square methods and the results are compared. Moreover, possible applications of the model are given. Those comprise the simulation from the presented model and the estimation of market covariance structures.
Resultados acadados no proxecto INDICADORES 22.
Creators: name: Parada, J.M.
Publisher: name: Zenodo
Year: 2024

description: Resumo dos resultados do proxecto INDICADORES 22 do programa REDEMAR. A presentación correspóndese coa xornada da Sesión Ordinaria de presentación de proxectos celebrada en Santiago de Compostela o 20 de outubro de 2023.
Impactos Potenciais do Protocolo de Cartagena sobre Biossegurança nas Exportações Brasileiras de Soja
Creators: name: Simões, Débora Da Costa
name: Burnquist, Heloisa Lee
name: Simões, Débora Da Costa
name: Burnquist, Heloisa Lee
Publisher: name: Unknown
Year: 2010
Subjects: subject: Agribusiness
subject: Cartagena Protocol on Biosafety
subject: GMOs
subject: LMOs
subject: international trade
subject: Equilibrium Displacement Model (EDM).

description: This paper aims to verify the impacts of the Biosafety Protocol on Brazilian exports, as the country was the only one amid the biggest world agricultural commodities producers that has ratified it. The analysis focused on Article 18 and also on the soybean market. The additional costs to identify LMOs were calculated to Brazil, Argentina and the US considering the main proposals submitted during negotiations. The figures revealed that the compliance costs are higher in Brazil compared to the other countries and that this difference increases as the exigencies become stricter. The potential impacts of these additional costs in the international market were estimated using the Equilibrium Displacement Model. It was considered a scenario under which only Brazil complied with CPB standards and another one where Argentina and the US also adopted equivalent measures. The results showed that Brazil would be harmed in both situations. The country could loose US$ 133 million under Scenario 1 and US$ 329 million under Scenario 2. Regarding Argentina and the US, the Scenario 2 presents better results. Therefore, it is almost certain that these countries will comply with CPB requirements. It implies that Brazil will incur in greater losses.
Reversible doping of graphene field effect transistors by molecular hydrogen: the role of the metal/graphene interface
Creators: name: Pereira, C. L.
name: Cadore, A. R.
name: Rezende, N. P.
name: Gadelha, A.
name: Soares, E. A.
name: Chacham, H.
name: Campos, L. C.
name: Lacerda, R. G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applied Physics (physics.app-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In this work, we present an investigation regarding how and why molecular hydrogen changes the electronic properties of graphene field effect transistors. We demonstrate that interaction with H2 leads to local doping of graphene near of the graphene-contact heterojunction. We also show that such interaction is strongly dependent on the characteristics of the metal-graphene interface. By changing the type metal in the contact, we observe that Ohmic contacts can be strongly or weakly electrostatically coupled with graphene. For strongly coupled contacts, the signature of the charge transfer effect promoted by the contacts results on an asymmetric ambipolar conduction, and such asymmetry can be tunable under interaction with H2. On the other hand, for contacts weakly coupled with graphene, the hydrogen interaction has a more profound effect. In such situation, the devices show a second charge neutrality point in graphene transistor transfer curves (a double-peak response) upon H2 exposure. We propose that this double-peak phenomenon arises from the decoupling of the work function of graphene and that of the metallic electrodes induced by the H2 molecules. We also show that the gas-induced modifications at the metal-graphene interface can be exploited to create a controlled graphene p-n junction, with considerable electron transfer to graphene layer and significant variation in the graphene resistance. These effects can pave the way for a suitable metallic contact engineering providing great potential for the application of such devices as gas sensors.
title: Trigonal Based Copper Sites - A Natural Situation?
Creators: name: Coyle, Joanne Lyssa
Publisher: name: The Open University
Year: 2000

description: This thesis is concerned with the synthesis and characterisation of copper model compounds which are of interest in a biological context. These model compounds fall into two main classes; iminopodands and azacryptands. The iminopodands are derived from the condensation of tris(2- aminoethy1)amine (tren) or tris(3-aminoisopropy1)amine (trpn) and a range of aromatic aldehydes. The compounds invariably co-ordinated Cu(1) and the structural consequences of the flexibility are examined and systematised. Their redox properties have also been studied and correlated with their structure.

 The main topic of this thesis concerns average valence dicopper cryptates. The synthesis has been studied in full including a description of likely decomposition and/or by-products. Considerable attention has been given to the spectroscopy of the average valence dicopper cryptates; Resonance Raman, ESR/ENDOR and solution and solid state NMR have been described. Two additional properties which have been given serious attention are the redox chemistry and electron self exchange kinetics because of the relevance of these properties to the natural sites we are attempting to model i.e. the CuA site of cytochrome c oxidase.

 In the final chapter preliminary experiments to synthesise a thiolate cryptand are reported in an attempt to model a S(cysteine) bridging function now known to exist in CuA.
Masses, Parallax, and Relativistic Timing of the PSR J1713+0747 Binary System
Creators: name: Splaver, Eric M.
name: Nice, David J.
name: Stairs, Ingrid H.
name: Lommen, Andrea N.
name: Backer, Donald C.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report on 12 years of observations of PSR J1713+0747, a pulsar in a 68-day orbit with a white dwarf. Pulse times of arrival were measured with uncertainties as small as 200 ns. The timing data yielded measurements of the relativistic Shapiro delay, perturbations of pulsar orbital elements due to secular and annual motion of the Earth, and the pulsar's parallax, as well as pulse spin-down, astrometric, and Keplerian measurements. The observations constrain the masses of the pulsar and secondary star to be m1=1.3+-0.2 solar masses and m2=0.28+-0.03 solar masses, respectively (68% confidence). Combining the theoretical orbital period-core mass relation with the observational constraints yields a somewhat higher pulsar mass, m1=1.53-0.06+0.08 solar masses. The parallax is 0.89+-0.08 mas, corresponding to a distance of 1.1+-0.1 kpc; the precision of the parallax measurement is limited by uncertainties in the electron content of the solar wind. The transverse velocity is unusually small, 33+-3 km/s. We find significant timing noise on time scales of several years, but no more than expected by extrapolating timing noise statistics from the slow pulsar population. With the orientation of the binary orbit fully measured, we are able to improve on previous tests of equivalence principle violations.
description: 12 pages, Accepted by ApJ
Supplementary Material for "Viscoelastic materials are most energy efficient when loaded and unloaded at equal rates"
Creators: name: Tsai, Lucien
name: Navarro, Paco
name: Wu, Siqi
name: Levinson, Taylor
name: Mendoza, Elizabeth
name: Janneke Schwaner, M.
name: Daley, Monica A.
name: Azizi, Emanuel
name: Ilton, Mark
Publisher: name: The Royal Society
Year: 2024
Subjects: classificationCode: 320203
subject: Clinical microbiology
classificationCode: 400302
subject: Biomaterials

description: Supplementary Text, Figures S1-S8 and Tables S1-S2
title: Influence of ApoE polymorphism on synaptic morphometry during aging in the dentate gyrus of ApoE knockout and human ApoE transgenic mice
Creators: name: Cambon, Karine
Publisher: name: The Open University
Year: 2000

description: Of the three forms of human Apolipoprotein E (ApoE2, ApoE3 and ApoE4), the ?4 allele coding for ApoE4 is associated with a higher risk of developing Alzheimer's disease (AD) and an earlier age of onset, whereas ?2 may be protective. The mechanisms underlying such influences are still unclear. This thesis has investigated the influence of ApoE polymorphism on structural synaptic parameters in the middle molecular layer (MML) of the dentate gyrus of wild type (WT), ApoE knockout (KO) and human ApoE (hApoE) transgenic mice, from 6 to 24 months of age using unbiased stereological methods at the EM level. In hApoE4 mice, there was a 34% decrease in the synapse per neuron ratio (Syn/nrn) accompanied by a 22% increase in the mean apposition zone area (mAZA) during aging. This pattern resembles closely the synaptic changes occurring early in AD, which have been correlated to the first symptoms of memory loss in humans. In contrast. there was no such synaptic loss in hApoE2, ApoE KO and WT mice. At old age, hApoE4 mice had the lowest syn/nrn but their mAZA was comparable to that of other groups. These data appear to be consistent with the view that possession of ?4 is deleterious to cognitive functions in the elderly and AD patients. Notably, aged ApoE KO mice did not show any sign of synaptic degeneration, suggesting the involvement of other proteins to compensate for the lack of ApoE. At 18 months old, hApoE2 mice have a greater hippocampal volume and display the highest syn/nrn and glutamate immunogold labelling in presynaptic boutons and dendrites of the MML, compared to hApoE3 and hApoE4 mice. In AD patients, such effects of the ?2 allele may act as a synaptic 'reservoir' and delay the onset of AD symptoms. Thus these lines of hApoE transgenic mice could provide a good basis for the future production of multiple transgenic mice in which to model AD pathogenesis.
Localization of a particle due to dissipation in 1 and 2 dimensional lattices
Creators: name: Hasselfield, Matthew
Publisher: name: University of British Columbia
Year: 2010

description: We study two aspects of the problem of a particle moving on a lattice while subject to dissipation, often called the "Schmid model." First, a correspondence between the Schmid model and boundary sine-Gordon field theory is explored, and a new method is applied to the calculation of the partition function for the theory. Second, a traditional condensed matter formulation of the problem in one spatial dimension is extended to the case of an arbitrary two-dimensional Bravais lattice. A well-known mathematical analogy between one-dimensional dissipative quantum mechanics and string theory provides an equivalence between the Schmid model at the critical point and boundary sine-Gordon theory, which describes a free bosonic field subject to periodic interaction on the boundaries. Using the tools of conformal field theory, the partition function is calculated as a function of the temperature and the renormalized coupling constants of the boundary interaction. The method pursues an established technique of introducing an auxiliary free boson, fermionizing the system, and constructing the boundary state in fermion variables. However, a different way of obtaining the fermionic boundary conditions from the bosonic theory leads to an alternative renormalization for the coupling constants that occurs at a more natural level than in the established approach. Recent renormalization group analyses of the extension of the Schmid model to a two-dimensional periodic potential have yielded interesting new structure in the phase diagram for the mobility. We extend a classic one-dimensional, finite temperature calculation to the case of an arbitrary two-dimensional Bravais lattice. The duality between weak-potential and tightbinding lattice limits is reproduced in the two-dimensional case, and a perturbation expansion in the potential strength used to verify the change in the critical dependence of the mobility on the strength of the dissipation. With a triangular lattice the possibility of third order contributions arises, and we obtain some preliminary expressions for their contributions to the mobility.
Some global, analytical and topological properties of regular black holes
Creators: name: Bargueño, Pedro
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this work we study regular black holes from a global perspective looking for evading some of the well-known singularity theorems by using their "reverses". Then, model geometries for the slices of typical spherically symmetric, (locally) static four dimensional regular black hole solutions are described from both an analytical and a topological point of view. While the finiteness of both the scalar and Kretchmann curvature of the slices around the regular center determines the geometry of the core, the positive answer to the Poincaré conjecture assures that, under two assumptions, its topology is that of a three-sphere. However, in general, the cores are shown to be $S^3$, $H^3$, $\mathbb{R}\times S^1$ or $S^1\times S^2$, depending whether a de Sitter, anti de Sitter, Nariai or Bertotti-Robinson geometries are employed to describe the slices at the regular center. Then, a description of the aforementioned slices in terms of Seifert fibre spaces is given in order to show that the Euler characteristic of the bundle can be used to track the transition between the core of the regular black hole and the rest of the slices in most of the cases considered in the literature. After Geroch and Tipler's theorems are employed to study the consequences of topology change on regular black hole spacetimes, we show that Borde and Vilenkin's singularity theorem is used to restrict their possible types. We end by noting that Nariai cores can be safely used to construct regular black holes without topology changes.
description: Comments added following suggestions of the referees. Accepted in Phys. Rev. D
An Optical Method for Evaluating the Mechanical Properties of Wires Under Impact Tensile Load
Creators: name: Youplao, Phichai
name: Nasbey, Hadi
name: Takita, Akihiro
name: Nachaisit, Prin
name: Fujii, Yusaku
Publisher: name: arXiv
Year: 2024
Subjects: subject: Signal Processing (eess.SP)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Applied Physics (physics.app-ph)
subject: Optics (physics.optics)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Physical sciences

description: The dynamic properties of materials utilized in architecture or engineering applications can significantly affect their performance under dynamic or impact loading conditions. To evaluate such behavior, force transducers are commonly employed in testing. However, the calibration of force transducers is typically limited to static conditions and relies solely on gravitational forces exerted on standard masses. Thus, assessing the uncertainty in force measurements using force transducers during dynamic loading conditions remains a challenging task, presenting a significant obstacle in accurately characterizing the dynamic behavior of materials. In this work, an optical technique to evaluate the mechanical properties of wires subjected to impact tensile loads is presented. The wire under test is subjected to an impact tensile load by applying the inertial force of a rigid mass, which is supported by utilizing an aerostatic linear bearing with sufficiently small friction. The inertial force applied to the wire can be determined by multiplying the mass of the rigid mass by its acceleration, where the acceleration can be measured employing a Michelson type optical interferometer. The performance of the proposed method is demonstrated through experiments and analysis of the dynamic characteristics of a tungsten wire under impact tensile loading conditions.
description: 9 pages, 13 figures, submitted to IEEE Transactions on Instrumentation and Measurement
title: Multiwavelength variability of black hole x-ray binaries in the low/hard state
Creators: name: Brocksopp, Catherine
Publisher: name: The Open University
Year: 2000

description: The behaviour of black hole X-ray binaries can be classified into five spectral states which are defined in terms of the X-ray spectral and timing properties of the source. These states show distinct and observable characteristics and transitions from one state to another often take place. Perhaps the most interesting of the five is the low/hard state; in theis state the X-ray emission appears to be confined to a Comptonising corona surrounding the black hole, the optical and infrared emission comes from a cold accretion disc with a large inner disc radius and a weak continuious jet is emitted from the central regions of the disc. In this thesis I study three black hole candidates which show low/hard state behaviour either most of the time (Cygnus X-1), quasi-periodically (LMC X-3) or intermittently (GS 1351-64). Observations were taken at X-ray, radio and optical wavelengths in order to study the preoperties of the low/hard state and the relationship between the accretion disc and the jet.
Distances and Metallicities for 17 Local Group Galaxies
Creators: name: McConnachie, A. W.
name: Irwin, M. J
name: Ferguson, A. M. N.
name: Ibata, R. A.
name: Lewis, G. F.
name: Tanvir, N.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have obtained Johnson V and Gunn i photometry for a large number of Local Group galaxies using the Isaac Newton Telescope Wide Field Camera (INT WFC). The majority of these galaxies are members of the M31 subgroup and the observations are deep enough to study the top few magnitudes of the red giant branch in each system. We previously measured the location of the tip of the red giant branch (TRGB) for Andromeda I, Andromeda II and M33 to within systematic uncertainties of typically < 0.05 mags (McConnachie et al. 2004). As the TRGB acts as a standard candle in old, metal poor stellar populations, we were able to derive distances to each of these galaxies. Here we derive TRGB distances to the giant spiral galaxy M31 and 13 additional dwarf galaxies - NGC205, NGC185, NGC147, Pegasus, WLM, LGS3, Cetus, Aquarius, AndIII, AndV, AndVI, AndVII and the newly discovered dwarf spheroidal AndIX. The observations for each of the dwarf galaxies were intentionally taken in photometric conditions. In addition to the distances, we also self-consistently derive the median metallicity of each system from the colour of their red giant branches. This allows us to take into account the small metallicity variation of the absolute I magnitude of the TRGB. The homogeneous nature of our data and the identical analysis applied to each of the 17 Local Group galaxies ensures that these estimates form a reliable set of distance and metallicity determinations that are ideal for comparative studies of Local Group galaxy properties.
description: MNRAS, in press. 23 pages, 15 figures, all of which are of significantly reduced quality due to size restrictions. We strongly recommend that you download from http://www.ast.cam.ac.uk/~alan/ instead
Symmetries at stationary Killing horizons
Creators: name: Medved, A. J. M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: It has often been suggested (especially by Carlip) that spacetime symmetries in the neighborhood of a black hole horizon may be relevant to a statistical understanding of the Bekenstein-Hawking entropy. A prime candidate for this type of symmetry is that which is exhibited by the Einstein tensor. More precisely, it is now known that this tensor takes on a strongly constrained (block-diagonal) form as it approaches any stationary, non-extremal Killing horizon. Presently, exploiting the geometrical properties of such horizons, we provide a particularly elegant argument that substantiates this highly symmetric form for the Einstein tensor. It is, however, duly noted that, on account of a "loophole", the argument does fall just short of attaining the status of a rigorous proof.
description: 11 pages, Revtex
Hybrid and Conventional Baryons in the Flux-Tube and Quark Models
Creators: name: Page, Philip R.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The status of conventional baryon flux-tubes and hybrid baryons is reviewed. Recent surprises are that a model prediction indicates that hybrid baryons are very weakly produced in glue-rich Psi decays, and an analysis of electro-production data concludes that the Roper resonance is not a hybrid baryon. The baryon decay flux-tube overlap has been calculated in the flux-tube model, and is discussed here. The behavior of the overlap follows naive expectations.
description: Invited plenary talk presented at the 10th International Symposium on Meson-Nucleon Physics and the Structure of the Nucleon (MENU 2004), 29 August - 4 September, Beijing, China. LaTeX, 11 (encapsulated) postscript figures, 6 pages
Radiation Processes in GRBs. Prompt Emission
Creators: name: Medvedev, Mikhail V.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A substantial fraction of prompt GRB spectra have soft spectral indexes exceeding the maximum allowed by the synchrotron model alpha_{max}=-2/3. Some spectra also exhibit very sharp break at E_p, inconsistent with the smooth synchrotron spectra. These facts pose a serious problem for the ``optically thin synchrotron'' interpretation of the prompt emission. We review various models suggested in order to resolve this puzzle.
description: 6 pages, 5 figures. Review talk at GRB-03 conference (Santa Fe)
Mercados Futuro e à Vista de Açúcar: uma análise empírica de eficiência versus arbitragem
Creators: name: Silva, Roseli Da
name: Takeuchi, Rodrigo
name: Silva, Roseli Da
name: Takeuchi, Rodrigo
Publisher: name: Unknown
Year: 2010
Subjects: subject: Agribusiness
subject: sugar futures market
subject: efficiency
subject: arbitrage
subject: cointegration.

description: This study tests the relative efficiency hypothesis of future and spot sugar markets for two forecast horizons, as opposed to commodity arbitrage. It was used a noarbitrage model of Brenner and Kroner (1995) and applied the methodology of comparative tests proposed by Kellard (2002), using multivariate cointegration methodology with restrictions on the cointegrated space. The database is formed by future prices of the number 11 contract traded on the Nybot (New York Board of Trade), domestic spot prices collected by Cepea (Center for Advanced Studies in Applied Economics) and the domestic interest rate, all on daily basis (May/97 to Dec/07). The matching sample is constructed by the futures contract maturity, considering two periods of forecast: 28 and 56 days. In general, the empirical evidences support the appropriateness of the cointegration methodology for analyzing the relative efficiency in the sugar markets, as opposed to arbitrage hypothesis, and generate weak evidence of inefficiency. Such results are subject to the assumption of stationarity of the cost of carry, except the interest rate component.
Biocompatible technique for nanoscale magnetic field sensing with Nitrogen-Vacancy centers
Creators: name: Bernardi, Ettore
name: Moreva, Ekaterina
name: Traina, Paolo
name: Petrini, Giulia
name: Tchernij, Sviatoslav Ditalia
name: Forneris, Jacopo
name: Pastuovic, Zelijko
name: Degiovanni, Ivo Pietro
name: Olivero, Paolo
name: Genovese, M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applied Physics (physics.app-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The possibility of using Nitrogen-vacancy centers in diamonds to measure nanoscale magnetic fields with unprecedented sensitivity is one of the most significant achievements of quantum sensing. Here we present an innovative experimental set-up, showing an achieved sensitivity comparable to the state of the art ODMR protocols if the sensing volume is taken into account. The apparatus allows magnetic sensing in biological samples such as individual cells, as it is characterized by a small sensing volume and full bio-compatibility. The sensitivity at different optical powers is studied to extend this technique to the intercellular scale.
description: 6 pages, 5 figures
A Dinâmica da Agricultura Francesa: inovação, transformação e identidade social
Creators: name: Massuquetti, Angelica
name: Massuquetti, Angelica
Publisher: name: Unknown
Year: 2010
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Agricultural Finance
subject: modernization
subject: agriculture
subject: social identity

description: This paper examines the French agricultural modernization process based on the evaluation of economists, social and political scientists, involving especially the debate of the contemporary social science and rural economics. The objective is to understand its dynamics by the relationship between different areas of knowledge, aiming at setting up an interpretative model to analyse the specific Brazilian agricultural modernization process. The rural area has not been transformed uniquely on economic grounds, by adopting innovations and new market approaches, but there was also a set up of new political and social identities on rural areas.
title: Pick and Mix: consumers moving between online and offline channels
Creators: name: van Dijk, Geesje Catharina Maria
Publisher: name: The Open University
Year: 2007

description: Consumers are increasingly using web-based systems for the search and purchase of products and services. They are, however, also still using traditional, offline channels such as telephone, high street and mail order, on a regular basis. The research presented in this thesis investigated consumer use of e-services in the context of a multi channel environment, with a special focus on voluntary channel choice and voluntary movement between channels. Both multi-channel usage and voluntary movement between channels are currently under-researched topics. The area of research for the study was leisure travel. The travel preparations from a sample of consumers throughout the UK were investigated through interviews and diary studies. Literature from the field of Human-Computer Interaction and Consumer Research informed the methodology and the perspective for the analysis. The findings from the in-depth study show that the participants frequently used multiple channels during their travel preparations. They regularly moved between online and offline channels, and often did so on a voluntary basis. The analysis revealed that the most important driver for multi-channel usage among the participants was the need for control. This research contextualises control as a key characteristic of contemporary consumption behaviour. Its main contributions are the findings that the need for control has six dimensions (time, place, costs, risks, information and personal contact), and that the influence of these dimensions on consumer channel choice varies across specific consumption situations. The study also found that the participants were not consistent in their channel choices over time. They showed fragmented consumer behaviour, dependent on their social roles and external circumstances. The thesis discusses how control and fragmentation are key themes in the explanation of voluntary multi-channel usage and movement between channels. The insights from this research contribute to a deeper understanding of consumer use of e-services and to strategic improvements in the design and management of e-services.
Learning,Generating and Adapting Wave Gestures for Expressive Human-Robot Interaction
Creators: name: Panteris, Mihalis
name: Manschitz, Simon
name: Calinon, Sylvain
Publisher: name: arXiv
Year: 2020
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: This study proposes a novel imitation learning approach for the stochastic generation of human-like rhythmic wave gestures and their modulation for effective non-verbal communication through a probabilistic formulation using joint angle data from human demonstrations. This is achieved by learning and modulating the overall expression characteristics of the gesture (e.g., arm posture, waving frequency and amplitude) in the frequency domain. The method was evaluated on simulated robot experiments involving a robot with a manipulator of 6 degrees of freedom. The results show that the method provides efficient encoding and modulation of rhythmic movements and ensures variability in their execution.
description: 3 pages, 3 figures
THE IMPORTANCE OF THE SCIENTIFIC HERITAGE OF ANCIENT PEOPLES IN THE FORMATION OF THE SCIENTIFIC AND MORAL VIEWS OF MEDIEVAL EASTERN THINKERS
Creators: name: Boymirzayev, Hero
Publisher: name: Zenodo
Year: 2024

description: The article examines the historical, socio-cultural conditions and social environment in the Muslim East, the scientific and methodological bases of studying the interpretation of justice in the moral views. Also, the factors that influenced the formation of his moral views were analyzed.
title: Web response ontology for data import in smart buildings
Creators: name: Gschweicher, Reinhold
Publisher: name: TU Wien
Year: 2017
Subjects: subject: Energiemanagement
subject: Web Services
subject: Wissensrepräsentation
subject: Energy Management
subject: Web Services
subject: Ontologies

description: Intelligente Gebäude sammeln und speichern Daten von unterschiedlichen Sensoren, um unter anderem Energie einzusparen und den Komfort der Bewohner zu verbessern. Die Nützlichkeit der gesammelten Datenbestände kann verbessert werden, indem sie mit externen Datenquellen verschmolzen werden. Diese gewonnenen Datenpunkte könnten analysiert werden, um Energie und damit Geld zu sparen. Bevor mit den Daten gearbeitet werden kann, müssen sie jedoch zuerst von den Webservern abgerufen werden. Diese liefern ihre Informationen in verschiedenen Formaten wie CSV, JSON und XML. Jedes Format muss anders behandelt und analysiert werden. Ontologien sind ein geeignetes Werkzeug zum Kombinieren von Datenpunkten und zum Darstellen von Wissen. In dieser Arbeit wird eine Ontologie zur Beschreibung von Webservice-Antworten erstellt, die in CSV-, JSON- oder XML-Formaten vorliegen. Um die Anwendbarkeit der Ontologie zu überprüfen, wird sie von einem Parser verwendet, um die angegebenen Datenpunkte in Web-Service-Antworten zu extrahieren. Die extrahierten Daten werden für die Berechnung der Energiebedarfsprognose in einem Bürogebäude in Wien herangezogen.
description: Smart buildings collect and store data from lots of sensors to save energy and improve the comfort level of the occupants among other things. The usefulness of the collected samples can be enhanced by fusing them with external data sources. These improved data points could be analysed to help save energy and therefore money. However before working with the data, it must first be retrieved from web servers. These provide their information in various formats like CSV, JSON and XML. Each format must be treated and parsed differently. Ontologies are a great tool for combining data points and representing knowledge. In this thesis, a response description ontology to describe web service responses in CSV, JSON or XML format is created. To verify the applicability of the ontology it is used by a parser to extract the specified data points in web service responses. The extracted data is then used to calculate one day heat energy consumption forecasts in a smart office building situated in Vienna.
Functional characterization of a gain-of-function mutant of AtMKK9 in Arabidopsis thaliana
Creators: name: Cluis, Corinne Pamela
Publisher: name: University of British Columbia
Year: 2010

description: The relatively small number of MAPKKs encoded in the Arabidopsis genome suggests that this particular class of kinases acts as a point of convergence within the plant's 'integration of external stimuli and their transduction to elicit biological responses. In an effort to gain information about the function of the MAPKK, AtMKK9 , in Arabidopsis, I have characterized several aspects of the phenotype of DEX:CA-MKK9-FLAG transgenic plants, which express an inducible constitutively active version of AtMKK9, CA-MKK9. I have found that CA-MKK9 expression can control the production of ethylene by activating a downstream MAPK, AtMPK6, which is known to promote the stabilization of ethylene biosynthesis enzymes. CA-MKK9 induction was correlated with an increase in AtMPK6 activity in planta, and was rapidly followed by production of a burst of ethylene in the induced plant tissues. I hypothesized that CA-MKK9 directly activates AtMPK6, and demonstrated that a recombinant version of CA-MKK9 was capable of phosphorylating AtMPK6 in vitro. In addition, the production of the hormone was abolished when C A - MKK9was expressed in a mpk6 knock-out background, thus proving that AtMPK6 is required for CA-MKK9 -mediated ethylene biosynthesis. I have also confirmed preliminary data from our laboratory suggesting that CA-MKK9 plays a role in oxidative programmed cell death. The necrotic lesions induced by CA-MKK9 were still observed in the mpk6 background, indicating that programmed cell death was triggered by CA-MKK9 activity independently of AtMPK6 activity and of ethylene overproduction. In addition, in order to investigate short-term transcriptional events triggered by CA-MKK9, I attempted to capture the transcriptional profile of DEX:CA-MKK9-FLAG plants using two-channel oligonucleotide microarrays. The CA-MKK9 - affected genes included a number of genes involved in the octadecanoid pathway, and their promoters were enriched in ABRE-like elements. However, my attempts to validate the microarray results using additional biological replicates and quantitative real-time PCR revealed that the majority of these early-response microarray results were apparently false positives, indicating that the microarray experiment was probably inappropriately constructed for capturing early transcriptional responses to CA-MKK9 using the dexamethasone-inducible system.
title: Assessing the effect of source code characteristics on changeability
Creators: name: Lozano Rodriguez, Angela
Publisher: name: The Open University
Year: 2009

description: Maintenance is the phase of the software lifecycle that comprises any modification after the delivery of an application. Modifications during this phase include correcting faults, improving internal attributes, as well as adapting the application to different environments. As application knowledge and architectural integrity degrade over time, so does the facility with which changes to the application are introduced. Thus, eliminating source code that presents characteristics that hamper maintenance becomes necessary if the application is to evolve. We group these characteristics under the term Source Code Issues. Even though there is support for detecting Source Code Issues, the extent of their harmfulness for maintenance remains unknown. One of the most studied Source Code Issue is cloning. Clones are duplicated code, usually created as programmers copy, paste, and customize existing source code. However, there is no agreement on the harmfulness of clones. This thesis proposes and follows a novel methodology to assess the effect of clones on the changeability of methods. Changeability is the ease with which a source code entity is modified. It is assessed through metrics calculated from the history of changes of the methods. The impact of clones on the changeability of methods is measured by comparing the metrics of methods that contain clones to those that do not. Source code characteristics are then tested to establish whether they are endemic of methods whose changeability decay increase when cloned. In addition to findings on the harmfulness of cloning, this thesis contributes a methodology that can be applied to assess the harmfulness of other Source Code Issues. The contributions of this thesis are twofold. First, the findings answer the question about the harmfulness of clones on changeability by showing that cloned methods are more likely to change, and that some cloned methods have significantly higher changeability decay when cloned. Furthermore, it offers a characterization of such harmful clones. Second, the methodology provides a guide to analyze the effect of Source Code Characteristics in changeability; and therefore, can be adapted for other Source Code Issues.
THE IMPORTANCE OF THE SCIENTIFIC HERITAGE OF ANCIENT PEOPLES IN THE FORMATION OF THE SCIENTIFIC AND MORAL VIEWS OF MEDIEVAL EASTERN THINKERS
Creators: name: Boymirzayev, Qahramon
Publisher: name: Zenodo
Year: 2024

description: The article examines the historical, socio-cultural conditions and social environment in the Muslim East, the scientific and methodological bases of studying the interpretation of justice in the moral views. Also, the factors that influenced the formation of his moral views were analyzed.
Avaliação Sob Risco da Capacidade de Pagamento por Água Bruta de Produtores da Bacia do Jaguaribe (CE)
Creators: name: Campos, Roberio Telmo
name: Campos, Roberio Telmo
Publisher: name: Unknown
Year: 2010
Subjects: subject: Agribusiness
subject: capacity of payment
subject: irrigation stakeholders
subject: risk
subject: bulk water

description: This paper aims to evaluate the capacity of payment, under risk conditions, of the bulk water to the rural producers’ users in Jaguaribe basin, State of Ceará. It was considered the aspects concerning whether the irrigation system is public or private, the location of the irrigation district, the level of consumption level and the activities being carried out. The data are primary, gathered by the application of 93 questionnaires to producers in private and public irrigation districts. As method of analysis, it is used the Monte Carlo simulation. We can conclude that for the sample of public and private irrigation farmers, the capacity of payment (CP) for bulk water shows a negative average value and that the majority of these producers cannot afford to pay for the water use, which represents high risk for the activities carried out. Only the irrigation farmers that showed net income (residual or netback), under deterministic conditions, higher than zero, can pay with large margin or low risk the value of tariff being charged currently by the water governmental agency (Cogerh). Some irrigation farmers do not show any probability of paying the current tariff. The public irrigation farmers show higher CP relatively the private ones. The cattle-raising activity was the one that showed lower risk concerning the tariff charged.
Bipolar Symbiotic Planetary Nebulae in the Thermal-IR: M2-9, Mz3, and He2-104
Creators: name: Smith, Nathan
name: Gehrz, Robert D.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present thermal-IR images of three extreme bipolar objects, M2-9, Mz3, and He2-104. They are bipolar planetary nebulae with bright central stars and are thought to be powered by symbiotic binary systems. The mid-IR images spatially resolve the SEDs of the central engines from the surrounding nebulae. A warm dust component of several hundred degrees can account for the core emission, while a cooler component of about 100 K produces the more extended emission from the bipolar lobes. In every case, the dust mass for the unresolved core region is orders of magnitude less than that in the extended lobes, raising doubts that the hypothetical disks in the core could have been responsible for pinching the waists of the nebulae. We find total masses of roughly 0.5-1 Msun in the nebulae of M2-9 and Mz3, requiring that this material was donated by intermediate-mass progenitor stars. The mass of He2-104's nebula is much lower, and any extended emission is too faint to detect in our images. Extended dust around both M2-9 and Mz3 resembles the distribution of ionized gas. Our images of Mz3 have the highest signal-to-noise in the extended polar lobes, and we show that the fairly uniform color temperature derived from our images can explain the 110 K dust component that dominates the far-IR SED. In the case of Mz3, most of the mass traced by dust is concentrated at high latitudes.
description: accepted by AJ, 18 pages, 5 figures
Lipschitz free spaces isomorphic to their infinite sums and geometric applications
Creators: name: Albiac, Fernando
name: Ansorena, Jose L.
name: Cuth, Marek
name: Doucha, Michal
Publisher: name: arXiv
Year: 2020
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 46B03 (Primary) 46B04, 46B20, 46A16 (Secondary)

description: We find general conditions under which Lipschitz-free spaces over metric spaces are isomorphic to their infinite direct $\ell_1$-sum and exhibit several applications. As examples of such applications we have that Lipschitz-free spaces over balls and spheres of the same finite dimensions are isomorphic, that the Lipschitz-free space over $\mathbb{Z}^d$ is isomorphic to its $\ell_1$-sum, or that the Lipschitz-free space over any snowflake of a doubling metric space is isomorphic to $\ell_1$. Moreover, following new ideas from [E. Bruè, S. Di Marino and F. Stra, Linear Lipschitz and $C^1$ extension operators through random projection, arXiv:1801.07533] we provide an elementary self-contained proof that Lipschitz-free spaces over doubling metric spaces are complemented in Lipschitz-free spaces over their superspaces and they have BAP. Everything, including the results about doubling metric spaces, is explored in the more comprehensive setting of $p$-Banach spaces, which allows us to appreciate the similarities and differences of the theory between the cases $p<1$ and $p=1$.
title: Temporal-epistemic logic in Byzantine message-passing contexts
Creators: name: Fimml, Patrik
Publisher: name: TU Wien
Year: 2017
Subjects: subject: Fault-tolerance
subject: distributed systems
subject: clock synchronization
subject: Byzantine faults
subject: epistemic logic

description: In dieser Diplomarbeit verwenden wir temporal-epistemische Logik, um asynchrone Message-Passing-Systeme mit bis zu f Byzantinisch fehlerhaften Rechenknoten zu analysieren. Wir stellen die Kontextklasse Gamma_bamp vor, ein Modell für asynchrone Message-Passing-Systeme mit Byzantinischen Fehlern, in dem wir temporal-epistemische Logik verwenden können. Wir stellen eine anschauliche Möglichkeit vor, wie Wissen für Byzantinisch-fehlerhafte Akteure definiert werden kann. Mittels temporal-epistemischer Logik zeigen wir, dass ein Akteur in einem System mit bis zu f Byzantinisch-fehlerhaften Akteuren zu Beginn nur dann Wissen gewinnen kann, wenn er Nachrichten von mindestens f+1 Akteuren erhält. Wir versuchen, fehlertolerante verteilte Uhrensynchronisation mittels epistemischer Logik zu untersuchen. Zu diesem Zweck führen wir Firing Rebels ohne Relay ein, ein einfacheres, aber mit Uhrensynchronisation verwandtes Problem. Mit unserem Modell beweisen wir notwendiges und hinreichendes Wissen, mit dem Akteure in Firing Rebels ohne Relay agieren können. Davon ausgehend leiten wir eine untere Schranke für die Kommunikation zwischen Akteuren ab. Diese Arbeit wurde durch das Projekt RiSE/SHiNE (S11405) des ÖsterreichischenWissenschaftsfonds (FWF) unterstützt.
description: In this thesis, we use temporal-epistemic logic to analyze asynchronous message-passing systems with up to f Byzantine node failures. We introduce the class of contexts Gamma_bamp, a model for Byzantine asynchronous message-passing systems that allows us to apply temporal-epistemic logic. We propose an intuitive interpretation of knowledge for Byzantine-faulty agents. We use temporal-epistemic logic to prove that with up to f Byzantine-faulty agents, an agent can initially only gain knowledge by receiving messages from at least f+1 agents. We seek to apply temporal-epistemic logic to the analysis of fault-tolerant distributed clock synchronization. For this purpose we introduce Firing Rebels without Relay, a weaker problem related to clock synchronization. We apply our model to prove necessary and sufficient knowledge for the actions of agents in Firing Rebels without Relay. Based on necessary knowledge, we derive a lower bound on communication between agents. This work was supported through project RiSE/SHiNE (S11405) of the Austrian Science Fund (FWF).