cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Exploring the use of Time-Dependent Cross-Network Information for Personalized Recommendations
Creators: name: Perera, Dilruk
name: Zimmermann, Roger
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Information Retrieval (cs.IR)
subject: Social and Information Networks (cs.SI)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: The overwhelming volume and complexity of information in online applications make recommendation essential for users to find information of interest. However, two major limitations that coexist in real world applications (1) incomplete user profiles, and (2) the dynamic nature of user preferences continue to degrade recommender quality in aspects such as timeliness, accuracy, diversity and novelty. To address both the above limitations in a single solution, we propose a novel cross-network time aware recommender solution. The solution first learns historical user models in the target network by aggregating user preferences from multiple source networks. Second, user level time aware latent factors are learnt to develop current user models from the historical models and conduct timely recommendations. We illustrate our solution by using auxiliary information from the Twitter source network to improve recommendations for the YouTube target network. Experiments conducted using multiple time aware and cross-network baselines under different time granularities show that the proposed solution achieves superior performance in terms of accuracy, novelty and diversity.
Quantum Dots and Etch-Induced Depletion of a Silicon 2DEG
Creators: name: Klein, L. J.
name: Lewis, K. L. M.
name: Slinker, K. A.
name: Goswami, Srijit
name: van der Weide, D. W.
name: Blick, R. H.
name: Mooney, P. M.
name: Chu, J. O.
name: Coppersmith, S. N.
name: Friesen, Mark
name: Eriksson, Mark A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The controlled depletion of electrons in semiconductors is the basis for numerous devices. Reactive-ion etching provides an effective technique for fabricating both classical and quantum devices. However, Fermi level pinning can occur, and must be carefully considered in the development of small devices, such as quantum dots. Because of depletion, the electrical size of the device is reduced in comparison with its physical dimension. To investigate this issue, we fabricate several types of devices in silicon-germanium heterostructures using two different etches, CF$_4$ and SF$_6$. We estimate the depletion width associated with each etch by two methods: (i) conductance measurements in etched wires of decreasing thickness (to determine the onset of depletion), (ii) capacitance measurements of quantum dots (to estimate the size of the active region). We find that the SF$_6$ etch causes a much smaller depletion width, making it more suitable for device fabrication.
description: 7 pages, 10 figures
Additional file 7 of Towards the restoration of the Mesoamerican Biological Corridor for large mammals in Panama: comparing multi-species occupancy to movement models
Creators: name: Meyer, Ninon F. V.
name: Moreno, Ricardo
name: Reyna-Hurtado, Rafael
name: Signer, Johannes
name: Balkenhol, Niko
Publisher: name: figshare
Year: 2020
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology
subject: Plant Biology

description: Additional file 7. Results - Determination of the optimal scale for forest cover, forest loss, and density of villages.
Behaviour-oriented concurrency
Creators: name: Cheeseman, Luke
Publisher: name: Imperial College London
Year: 2024

description: Behaviour-oriented concurrency (BoC) is a novel concurrency paradigm which provides programmers with expressive synchronisation whilst avoiding deadlocks and data-races. This thesis focuses on the design of BoC and how it provides isolated and ordered behaviours. BoC is based on behaviours and concurrent owners. Concurrent owners provide exclusive access to mu- table resources. Behaviours are units of work and are dispatched based on the availability of one or more concurrent owners, providing a simple mechanism to coordinate access to multiple resources. In this thesis, I explore the design of BoC by way of examples, and establish an operational semantics which captures how BoC can enrich an underlying language with concurrency. BoC guarantees behaviours are deadlock free, data-race free and atomic through behaviour isolation; to ensure this, the underlying language must satisfy key isolation properties. In this thesis, I define these isolation properties which constitute the interface between BoC and the underlying language. Using these properties, I prove that BoC provides atomic behaviours. BoC behaviours are implicitly ordered based on spawn order and cown acquisition; if one behaviour is spawned after another and the behaviours require any of the same cowns, then the behaviour spawned first will execute first. This ordering allows programmers to construct ordered concurrency without introducing their own control-flow constructs. In this thesis, I construct an axiomatic model of BoC to explore the design of behaviour ordering. This model allows us to judge the validity of candidate executions, independent of the intricacies of the mecha- nisms used to execute a program (e.g., an operational semantics). I compare this axiomatic model and the operational semantics to investigate the two models’ expressiveness, finding that the operational semantics is slightly too restrictive. To demonstrate the expressiveness and applicability of BoC, I have implemented well-known concur- rency challenges and benchmarks using the paradigm.
Enhancement of stability in randomly switching potential with metastable state
Creators: name: Spagnolo, B.
name: Dubkov, A. A.
name: Agudov, N. V.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The overdamped motion of a Brownian particle in randomly switching piece-wise metastable linear potential shows noise enhanced stability (NES): the noise stabilizes the metastable system and the system remains in this state for a longer time than in the absence of white noise. The mean first passage time (MFPT) has a maximum at a finite value of white noise intensity. The analytical expression of MFPT in terms of the white noise intensity, the parameters of the potential barrier, and of the dichotomous noise is derived. The conditions for the NES phenomenon and the parameter region where the effect can be observed are obtained. The mean first passage time behaviours as a function of the mean flipping rate of the potential for unstable and metastable initial configurations are also analyzed. We observe the resonant activation phenomenon for initial metastable configuration of the potential profile.
description: 9 pages, 5 figures. In press in "European Physical Journal B"
Synchronisation and calibration of the 24-modules J-PET prototype with 300~mm axial field of view
Creators: name: Moskal, P.
name: Bednarski, T.
name: Niedzwiecki, Sz.
name: Silarski, M.
name: Czerwinski, E.
name: Kozik, T.
name: Chhokar, J.
name: Bała, M.
name: Curceanu, C.
name: Del Grande, R.
name: Dadgar, M.
name: Dulski, K.
name: Gajos, A.
name: Gorgol, M.
name: Gupta-Sharma, N.
name: Hiesmayr, B. C.
name: Jasinska, B.
name: Kacprzak, K.
name: Kaplon, L.
name: Karimi, H.
name: Kisielewska, D.
name: Klimaszewski, K.
name: Korcyl, G.
name: Kowalski, P.
name: Krawczyk, N.
name: Krzemien, W.
name: Kubicz, E.
name: Mohammed, M.
name: Palka, M.
name: Pawlik-Niedzwiecka, M.
name: Raczynski, L.
name: Raj, J.
name: Sharma, S.
name: Shivani
name: Shopa, R. Y.
name: Skurzok, M.
name: Stepien, E.
name: Wislicki, W.
name: Zgardzinska, B.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: Research conducted in the framework of the J-PET project aims to develop a cost-effective total-body positron emission tomography scanner. As a first step on the way to construct a full-scale J-PET tomograph from long strips of plastic scintillators, a 24-strip prototype was built and tested. The prototype consists of detection modules arranged axially forming a cylindrical diagnostic chamber with the inner diameter of 360 mm and the axial field-of-view of 300 mm. Promising perspectives for a low-cost construction of a total-body PET scanner are opened due to an axial arrangement of strips of plastic scintillators, wchich have a small light attenuation, superior timing properties, and the possibility of cost-effective increase of the axial field-of-view. The presented prototype comprises dedicated solely digital front-end electronic circuits and a triggerless data acquisition system which required development of new calibration methods including time, thresholds and gain synchronization. The system and elaborated calibration methods including first results of the 24-module J-PET prototype are presented and discussed. The achieved coincidence resolving time equals to CRT = 490 $\pm$ 9 ps. This value can be translated to the position reconstruction accuracy $σ(Δl) =$ 18 mm which is fairly position-independent.
description: Accepted for publication in IEEE Transactions on Instrumentation and Measurement
Resonance modes in a 1D medium with two purely resistive boundaries: calculation methods, orthogonality and completeness
Creators: name: Kergomard, Jean
name: Debut, Vincent
name: Matignon, Denis
Publisher: name: arXiv
Year: 2004
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: Studying the problem of wave propagation in media with resistive boundaries can be made by searching for "resonance modes" or free oscillations regimes. In the present article, a simple case is investigated, which allows one to enlighten the respective interest of different, classical methods, some of them being rather delicate. This case is the 1D propagation in a homogeneous medium having two purely resistive terminations, the calculation of the Green function being done without any approximation using three methods. The first one is the straightforward use of the closed-form solution in the frequency domain and the residue calculus. Then the method of separation of variables (space and time) leads to a solution depending on the initial conditions. The question of the orthogonality and completeness of the complex-valued resonance modes is investigated, leading to the expression of a particular scalar product. The last method is the expansion in biorthogonal modes in the frequency domain, the modes having eigenfrequencies depending on the frequency. Results of the three methods generalize or/and correct some results already existing in the literature, and exhibit the particular difficulty of the treatment of the constant mode.
Photometric observations of ecliptic comet 47P/Ashbrook-Jackson and selected quasi-Hilda and main-belt comets at Kyiv Comet Station (MPC code - 585) in 2017
Creators: name: Borysenko, Serhii
name: Baransky, Alexander
name: Musiichuk, Elena
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present an analysis of the photometric data of comets 47P/Ashbrook -Jackson, 65P/Gunn, 362P/2008 GO98, and P/2017 S5 (ATLAS) observed at Kyiv Comet Station (MPC code - 585) in 2017. The upper limits of radii for cometary nuclei, Afrho parameters, and color-indexes are measured.
description: 14 pages, 1 figures, 2 tables
Additional file 8 of Towards the restoration of the Mesoamerican Biological Corridor for large mammals in Panama: comparing multi-species occupancy to movement models
Creators: name: Meyer, Ninon F. V.
name: Moreno, Ricardo
name: Reyna-Hurtado, Rafael
name: Signer, Johannes
name: Balkenhol, Niko
Publisher: name: figshare
Year: 2020
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology
subject: Plant Biology

description: Additional file 8. Results - Species-specific coefficients for environmental variables estimated with occupancy modeling.
title: Berücksichtigung der Frosteinwirkung in der Oberbaubemessung
Creators: name: Heldrung, Peter
Publisher: name: TU Wien
Year: 2019
Subjects: subject: Frosteinwirkung
subject: Oberbaubemessung
subject: Frosteinwirkung
subject: Oberbaubemessung

description: Die Straßenoberbaurichtlinie in Österreich stellt ein Bemessungsverfahren zur Verfügung, welches die Auswahl eines standardisierten Straßenaufbaus ermöglicht. Dabei erfolgt keine gesonderte Berücksichtigung der Frosteinwirkung. Allerdings wird explizit die Möglichkeit eingeräumt, eine Schichtdickenanpassung, bei schlechten hydrogeologischen Bedingungen sowie bei einer wahrscheinlich zu erwartenden ungünstigen Frosteindringung vornehmen zu können. Somit ergibt sich ein großer Anpassungsspielraum in der Richtlinie. Zu Beginn der Arbeit wird der Mechanismus der Eislinsenbildung geschildert, um die schädigende Wirkung der Frosteinwirkung auf den Straßenoberbau näher zu erläutern. Auch wird der Stand der Technik bei der Frostdimensionierung in Deutschland, der Schweiz und den USA beschrieben. Vor diesem Hintergrund wurde eine telefonische Umfrage durchgeführt, mit dem Ziel nähere Informationen zur gewählten Frostdimensionierung zu erhalten. Hierbei wurden Vertreter der Bundesländer und der ASFINAG befragt. Aufbauend auf den Ergebnissen der Recherche und der Umfrage wird versucht einen vereinfachten Zusammenhang zwischen Lufttemperatur und Frosteindringung für eine Frostdimensionierung in Österreich zu definieren. Das Vorgehen wird durch eine softwaregestütze Temperatureindringungsberechnung überprüft.
description: The current pavement design guideline in Austria provides a number of different standardized pavement structures. This guideline does not consider a specific adjustment of the layer thicknesses because of frost action. It is the responsibility of the designer to take measures in order to avoid frost damage if the frost penetration is expected to reach a critical depth or the pavement structure is built under difficult hydrogeological conditions. Thus, there is no uniform approach in each federal state in Austria. The first part of the thesis deals with the ice lens theory and the mechanism of frost damage. Furthermore, the frost pavement design procedures in the guidelines and standards of Germany, Switzerland and the USA are described. Consequently, a telephone survey was conducted with representatives of the federal states to gather information about the chosen frost design approach. The result of the survey and the literature research shows the necessity of a user-friendly frost design approach in the austrian pavement guideline. So the next step was to find a simplified relation between air freezing temperature and frost penetration to estimate and adjust the thickness of the unbound layers. By using a one-dimensional finite-difference solution that is implemented in a software tool for the temperature simulation of the pavement layers it could be shown that a parabolic relation between freezing temperature and frost penetration exists. Further steps are necessary to implement a simplified equation for each standardized pavement structure in the design guideline.
Surface oxidation of liquid Sn
Creators: name: Grigoriev, Alexei
name: Shpyrko, Oleg
name: Steimer, Christoph
name: Pershan, Peter S.
name: Ocko, Benjamin M.
name: Deutsch, Moshe
name: Lin, Binhua
name: Meron, Mati
name: Graber, Timothy
name: Gebhardt, Jeffrey
Publisher: name: arXiv
Year: 2004
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report the results of an x-ray scattering study that reveals oxidation kinetics and formation of a previously unreported crystalline phase of SnO at the liquid-vapour interface of Sn. Our experiments reveal that the pure liquid Sn surface does not react with molecular oxygen below an activation pressure of \~5.0*10-6 Torr. Above that pressure a rough solid Sn oxide grows over the liquid metal surface. Once the activation pressure has been exceeded the oxidation proceeds at pressures below the oxidation pressure threshold. The observed diffraction pattern associated with the surface oxidation does not match any of the known Sn oxide phases. The data have an explicit signature of the face-centred cubic structure, however it requires lattice parameters that are about 9% smaller than those reported for cubic structures of high-pressure phases of Sn oxides. Keywords: X-ray scattering, diffraction, and reflection; Oxidation; Surface chemical reaction; Surface structure, morphology, roughness, and topography; Tin; Tin oxides; Liquid surfaces; Polycrystalline thin films
description: 18 pages, 6 figures, 1 table; Submitted to Surface Science
Origin and evolution of the Galactic inventories of interstellar dust and its composition
Creators: name: Gupta, Anuj
name: Sahijpal, Sandeep
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Interstellar dust is a significant component of matter in the galaxies. The dust owns its origin and reprocessing in a wide range of astrophysical environments. In order to understand the origin and evolution of the distinct types of interstellar dust grains, we have attempted a comprehensive correlated study of the thermodynamics condensation of dust grains in distinct stellar environments with the Galactic chemical evolution of the Milky Way Galaxy. The Galaxy is evolved in terms of elemental evolution resulting from stellar nucleosynthetic contributions of several generations of stars. Based on the elemental composition of the evolving Galaxy, the relative abundances of the major constituents of interstellar dust are assessed. The major aim is to redistribute the various condensable elements at any epoch during the evolution of the Galaxy into various grain constituents and understand their abundance evolution based on a mass-balance formalism. We also performed thermodynamical equilibrium condensation calculations to understand the stellar origin of various grain constituents that could carry the isotopic signatures of the various stellar nucleosynthetic sources. This is perhaps a novel attempt to estimate the bulk dust mass budget in the evolving Galaxy. The normalized mass of the Galactic dust is predicted to decrease with the increase in distance from the Galactic centre. It increases over time. The supernovae SN Ia are predicted as the most prominent sources of Fe-dust mass, the supernovae SN II+Ib/c produces oxides and silicate dust mass, and the AGB stars contributes to carbonaceous dust mass.
description: Accepted for MNRAS, 28 Pages, 8 figures, 21 tables in main manuscript and 1 table in supplementary data
"ЭЛИМ" ҚЎШИҒИНИНГ ҒОЯВИЙ КОНТЕКСТИ
Creators: name: Фазилов, Бахром
name: Ганиева, Лола
Publisher: name: Zenodo
Year: 2025

description: Мақолада маҳоратли композитор Хушнуд Назаров томонидан таниқли шоир Бобур Бобомуроднинг “Элим” шеърига ёзилган қўшиқнинг ғоявий контексти кўриб чиқилган. Хушнуд Назаров истеъдодли ёшларнинг меҳрибон устози, қатор симфоник асарлар, эстрада вокал ва чолғу асарлари, фильмлар учун мусиқалар муаллифидир.Бобур Бобомурод XXI аср ўзбек шеъриятининг фаол ва истеъдодли ижодкорларидан. Унинг шеърларида Ватан ва мустақиллик мавзулари алоҳида ўрин олган. Мақолада қўшиқ ғоясининг мусиқий ва шеърий контексти, акс эттирилган мавзуларнинг кенгайтирилган мазмуни таҳлил қилинган
Additional file 6 of Towards the restoration of the Mesoamerican Biological Corridor for large mammals in Panama: comparing multi-species occupancy to movement models
Creators: name: Meyer, Ninon F. V.
name: Moreno, Ricardo
name: Reyna-Hurtado, Rafael
name: Signer, Johannes
name: Balkenhol, Niko
Publisher: name: figshare
Year: 2020
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology
subject: Plant Biology

description: Additional file 6. Results - GPS relocations and steps for each individual.
Codebook for Identifying Segregation Forms
Creators: name: Netto, Vinicius de Moraes
name: Krenz, Kimon
name: Friszon, Maria
name: Peres, Otavio
name: Rosalino, Desirée
Publisher: name: Zenodo
Year: 2024

description: Supplementary information to the article “Decoding Segregation: Navigating a century of segregation research across disciplines and introducing a bottom-up taxonomy”
Effekte der Staalichen Marktintervention auf den Weizenmarkt in Serbien während der Nahrungsmittelkrise in 2007/2008
Creators: name: Djuric, Ivan
name: Gotz, Linde
name: Glauben, Thomas
name: Djuric, Ivan
name: Gotz, Linde
name: Glauben, Thomas
Publisher: name: Unknown
Year: 2011
Subjects: subject: Agribusiness
subject: international market integration
subject: Markov-Switching Error Correction Model
subject: Serbia
subject: wheat market
subject: food crisis
subject: Internationale Marktintegration
subject: Markov-Switching Fehler Korrektur Modell
subject: Serbien
subject: Weizenmärkte
subject: Nahrungsmittelkrise

description: This paper analyzes how the market interventions of the Serbian government during the food crisis 2007/2008, inter alia a de facto export ban, have affected domestic wheat market. Besides a comprehensive description of the crisis policy and its effects on the Serbian wheat market, we investigate how it influences the equilibrium and stability of the Serbian wheat market and its integration with the world market within a price transmission model. Applying a Markov-switching error correction model to weekly wheat grower prices in Serbia and world market prices, two states of the wheat market are identified. Our results suggest that the market equilibrium was disrupted and that the market stability was reduced especially after the export ban and during the so called “adjustment” regime. Also, we find that the price dampening effect of the export restrictions was only short-lived, and that Serbian wheat grower prices even increased above the world market level. Wir analysieren wie sich die Interventionen der serbischen Regierung auf den Weizenmarkt, insbesondere das Exportverbot, während der Nahrungsmittelkrise 2007/2008 auf den inländischen Weizenmarkt ausgewirkt haben. Basierend auf Experteninterviews liefert dieser Beitrag zunächst eine detaillierte deskriptive Analyse der Politikmaßnahmen sowie deren Effekte auf Marktpreise und Handelsmengen. Darüber hinaus werden die Einflüsse der Krisenpolitik bzw. der Krise selbst auf das Gleichgewicht, die Stabilität sowie die Integration des inländischen Weizenmarktes in die Weltmärkte untersucht. In einem Markov-Switching Fehlerkorrekturmodell, welches auf der Grundlage von wöchentlichen Erzeugerpreisen für Weizen in Serbien sowie Weltmarktpreisen geschätzt wird, lassen sich zwei Preistransmissionszustände identifizieren. Unsere Ergebnisse weisen darauf hin, dass das Marktgleichgewicht gestört wurde, und dass die Marktstabilität besonders nach dem Exportverbot und während des so genannten "Anpassung"-Regime reduziert wurde. Darüber hinaus war der preisdämpfende Effekt des Exportverbots nur von kurzer Dauer; vielmehr stieg der serbische Weizenpreis weit über das Niveau des Weltmarktpreises an.
Stability of the nonlinear filter for slowly switching Markov chains
Creators: name: Chigansky, P.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Probability (math.PR)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 93E11, 60J57

description: Exponential stability of the nonlinear filtering equation is revisited, when the signal is a finite state Markov chain. An asymptotic upper bound for the filtering error due to incorrect initial condition is derived in the case of slowly switching signal.
description: the final version
Entwicklungspotenziale für Forstbetriebsgemeinschaften - Ergebnisse einer institutionsökonomischen Analyse
Creators: name: Harsche, Johannes
name: Jaensch, Kerstin
name: Krokel, Karin
name: Harsche, Johannes
name: Jaensch, Kerstin
name: Krokel, Karin
Publisher: name: Unknown
Year: 2011
Subjects: subject: Land Economics/Use
subject: Forstpolitik
subject: Forstliche Betriebswirtschaftslehre
subject: Strukturwandel
subject: Institutionenökonomie
subject: Landnutzung
subject: Forest Policy
subject: Forestry Management
subject: Structural Change
subject: Institutional Economics
subject: Land Use

description: In dem vorliegenden Beitrag werden am Beispiel des Landes Hessen die Entwicklungsperspektiven von Forstbetriebsgemeinschaften aufgezeigt. Die strukturelle Bedeutung derartiger Zusammenschlüsse für die hessische Forstwirtschaft ist auch daraus ersichtlich, dass gegenwärtig etwa die Hälfte der hessischen Waldfläche auf forstwirtschaftliche Zusammenschlüsse entfällt. In einem ersten Untersuchungsschritt werden anhand von theoretischen Überlegungen aus der Institutionenökonomie Optionen für die zukünftige Ausrichtung der Forstbetriebsgemeinschaften beleuchtet. In einem zweiten Untersuchungsschritt erfolgt die qualitative Auswertung von 19 leitfadengestützten Expertengesprächen mit Vertretern der Forst- und Holzwirtschaft. Die Untersuchungsergebnisse weisen darauf hin, dass die hessischen Forstbetriebsgemeinschaften mit zahlreichen strukturellen Problemen konfrontiert sind und im Hinblick auf eine stärker unternehmerisch ausgerichtete Geschäftstätigkeit voraussichtlich noch einen beschwerlichen Weg vor sich haben. In this paper, with regard to the forest sector of the German State of Hesse, the corporate governance of forestry cooperatives is argued. The structural relevance of our research topic is obvious because of the fact that in the State of Hesse nearly the half of forest area is used by such cooperatives. In order to derive some future perspectives for the management of forestry cooperatives, in a first step, some considerations of institutional economics are presented. Second, in a qualitative analysis the results from 19 interviews with experts of the forestry sector are explored. Our results show that, obviously, the forestry cooperatives face many heavy structural problems.
Sensorimotor Visual Perception on Embodied System Using Free Energy Principle
Creators: name: Esaki, Kanako
name: Matsumura, Tadayuki
name: Ito, Kiyoto
name: Mizuno, Hiroyuki
Publisher: name: arXiv
Year: 2020
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: We propose an embodied system based on the free energy principle (FEP) for sensorimotor visual perception. We evaluated it in a character-recognition task using the MNIST dataset. Although the FEP has successfully described a rule that living things obey mathematically and claims that a biological system continues to change its internal models and behaviors to minimize the difference in predicting sensory input, it is not enough to model sensorimotor visual perception. An embodiment of the system is the key to achieving sensorimotor visual perception. The proposed embodied system is configured by a body and memory. The body has an ocular motor system controlling the direction of eye gaze, which means that the eye can only observe a small focused area of the environment. The memory is not photographic, but is a generative model implemented with a variational autoencoder that contains prior knowledge about the environment, and that knowledge is classified. By limiting body and memory abilities and operating according to the FEP, the embodied system repeatedly takes action to obtain the next sensory input based on various potentials of future sensory inputs. In the evaluation, the inference of the environment was represented as an approximate posterior distribution of characters (0 - 9). As the number of repetitions increased, the attention area moved continuously, gradually reducing the uncertainty of characters. Finally, the probability of the correct character became the highest among the characters. Changing the initial attention position provides a different final distribution, suggesting that the proposed system has a confirmation bias.
description: This is a pre-print of an article published in Communications in Computer and Information Science, vol 1524. The final authenticated version is available online at: https://doi.org/10.1007/978-3-030-93736-2_62
Functional analysis of MAP kinase-dependent elicitor response signaling in tobacco
Creators: name: Hall, Hardy Craig
Publisher: name: University of British Columbia
Year: 2009

description: While the MAP kinase, SIPK, is rapidly activated by stress in tobacco (Nicotiana tabacum), its role in mediating stress response outcomes, particularly in its relation to phytohormones and second messengers is unclear. I investigated the tissue and transcriptional responses of tobacco to bacterial and oomycete elicitors, by comparing SIPK-silenced plant, and cell suspension culture lines to WT. SIPK-silencing led to increased sensitivity of tobacco leaf tissue to treatment with bacterial harpin (hrpZ[sub Psph]) (Pseudomonas syringae pv. phaseolicola), indicating that SIPK plays a negative regulatory role in the hrpZ[sub Psph]-induced hypersensitive response. HrpZ[sub Psph]-induced reactive oxygen species (ROS) burst was enhanced in the SIPK-silenced plants compared to the WT plants, indicative of a negative regulatory role for SIPK in harpin-induced ROS accumulation. Strong hrpZ[sub Psph]-induced activation of SIPK (and WIPK) in the NahG line demonstrates that SIPK and WIPK activation are largely SA-independent. SIPK-silenced tobacco plants hyper-accumulated SA following harpin treatment, suggesting that SIPK acts upstream as a negative regulator of harpin-induced SA accumulation. To address the functional roles of SIPK in mediating transcriptional responses induced by hrpZ[sub Psph] and the oomycetes elicitor β-megaspermin (Phytophthora megasperma H20), I monitored the transcriptional responses of WT and SIPK-Ri tobacco cell suspension cultures to each elicitor at 4 and 8-hours post-treatment, using TIGR potato cDNA microarrays (10K element). SIPK-affected transcriptional responses were analyzed in the context of the WT responses to these elicitors in order to identify a set of genes associated with each elicitor that respond in a SIPK-dependent manner. SIPK-silencing was found to have a substantial impact on both hrpZ[sub Psph]- and β-megaspermin-induced transcriptional responses. Hierarchical clustering of genes that responded significantly to either elicitor (but not both) revealed striking functional differences between the two SIPK-dependent responses, suggesting that signal transduction through SIPK plays an important role in conditioning elicitor-specific transcriptional responses.
Can you hear the fractal dimension of a drum?
Creators: name: Arrighetti, W.
name: Gerosa, G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Spectral Theory (math.SP)
subject: Mathematical Physics (math-ph)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 28A80

description: Electromagnetics and Acoustics on a bounded domain are governed by the Helmholtz's equation; when such a domain is a [pre-]fractal described by means of a `just-touching' Iterated Function System (IFS) spectral decomposition of the Helmholtz's operator is self-similar as well. Renormalization of the Green's function proves this feature and isolates a subclass of eigenmodes, called ``diaperiodic'', whose waveforms and eigenvalues can be recursively computed applying the IFS to the initiator's eigenspaces. The definition of ``spectral dimension'' is given and proven to depend on diaperiodic modes only for a wide class of IFSs. Finally, asymptotic equivalence between box-counting and spectral dimensions in the fractal limit is proven. As the `self-similar' spectrum of the fractal is enough to compute box-counting dimension, positive answer is given to title question.
description: [11 pages, 2 figures] To appear in ``Applied and Industrial Mathematics in Italy'', World Scientific, 2005. Authors are with the Electronic Engineering Department, ``LaSapienza'' University of Rome, at http://www.die.uniroma1.it/strutture/labcem/
Intra-Day Variation of Sagittarius A* at Short Millimeter Wavelengths
Creators: name: Miyazaki, Atsushi
name: Tsutsumi, Takahiro
name: Tsuboi, Masato
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have performed the monitoring observations of flux density of Sagittarius A* at short millimeter wavelengths (100 and 140 GHz bands) on seven years in the period from 1996 to 2003 using the Nobeyama Millimeter Array (NMA). We found intra-day variation of Sgr A* in March 2000 flare. The flux density at the peak of the flares increases 100-200 % at 100 GHz and 200-400 % at 140 GHz ($?Delta S/S$), respectively. The two-fold increase timescale of the flare is estimated to be about 1.5 hours at 140 GHz. The intra-day variation at mm-wavelengths has similar increase timescale as those in the X-ray and infrared flares but has smaller amplitude. This short timescale variability suggests that the physical size of the emitting region is smaller than 12 AU $?approx$ 150 Rs). The decay timescale of the flare was at most 24 hours. Such a light curve with rapid increase and slow decay is similar to that often observed in outburst phenomena with ejections.
description: 13 pages, 3 figures, Accepted for publication in ApJL
Additional file 2 of Effect of a low glycaemic index diet during pregnancy on maternal and cord blood metabolomic profiles: results from the ROLO randomized controlled trial
Creators: name: Marchioro, Linda
name: Geraghty, Aisling A.
name: Uhl, Olaf
name: Engy Shokry
name: O’Brien, Eileen C.
name: Koletzko, Berthold
name: McAuliffe, Fionnuala M.
Publisher: name: figshare
Year: 2020
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Physiology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Science Policy

description: Sensitivity analyses for maternal blood. (DOCX 25 kb)
A2255: the First Detection of Filamentary Polarized Emission in a Radio Halo
Creators: name: Govoni, Federica
name: Murgia, Matteo
name: Feretti, Luigina
name: Giovannini, Gabriele
name: Dallacasa, Daniele
name: Taylor, Greg
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A deep radio observation of the A2255 cluster of galaxies has been carried out at 1.4 GHz with the Very Large Array synthesis telescope. Thanks to the excellent (u,v) coverage and sensitivity achieved by our observation, the low brightness diffuse extended sources in the cluster (radio halo and relic) have been imaged with unprecedented resolution and dynamic range. We find that the radio halo has filamentary structures that are strongly polarized. The fractional linear polarization reaches levels of $\simeq$ 20$-$40% and the magnetic fields appear ordered on scales of $\sim$400 kpc. This is the first successful attempt to detect polarized emission from a radio halo and provides strong evidence that in this cluster the magnetic field is ordered on large scales.
description: 4 pages, 3 figures, accepted for publication in Astronomy and Astrophysics Letters
Superconductivity-Induced Transfer of In-Plane Spectral Weight in Bi2Sr2CaCu2O8: Resolving a Controversy
Creators: name: Kuzmenko, A. B.
name: Molegraaf, H. J. A.
name: Carbone, F.
name: van der Marel, D.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present a detailed analysis of the superconductivity-induced redistribution of optical spectral weight in Bi2Sr2CaCu2O8 near optimal doping. It confirms the previous conclusion by Molegraaf et al. (Science 66, 2239 (2002)), that the integrated low-frequency spectral weight shows an extra increase below Tc. Since the region, where the change of the integrated spectral weight is not compensated, extends well above 2.5 eV, this transfer is caused by the transfer of spectral weight from interband to intraband region and only partially by the narrowing of the intraband peak. We show that the opposite assertion by Boris et al. (Science 304, 708 (2004)) regarding this compound, is unlikely the consequence of any obvious discrepancies between the actual experimental data.
description: ReVTeX, 9 pages, 8 encapsulated postscript figures, several typo's corrected
Data for "Social evaluation of co-action partners: Children’s partner recruitment in cooperation and competition tasks"
Creators: name: Fischer, Julia
name: Titchener, Rowan
name: Hermes, Jonas
name: Keupp, Stefanie
name: Rakoczy, Hannes
Publisher: name: OSF Registries
Year: 2023
Subjects: subject: Social and Behavioral Sciences
subject: social evaluation

description: This project contains data and analysis code for our study on social evaluation competence in 4-7-year-old children. A preprint associated with the data can be found here: https://doi.org/10.31234/osf.io/c3gwu
Additional file 5 of Towards the restoration of the Mesoamerican Biological Corridor for large mammals in Panama: comparing multi-species occupancy to movement models
Creators: name: Meyer, Ninon F. V.
name: Moreno, Ricardo
name: Reyna-Hurtado, Rafael
name: Signer, Johannes
name: Balkenhol, Niko
Publisher: name: figshare
Year: 2020
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology
subject: Plant Biology

description: Additional file 5. Methods - Core areas of two groups of species.
Chasing $θ_{13}$ with new reactor neutrino experiments
Creators: name: Lasserre, Th.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: It is now widely accepted that a new middle baseline disappearance reactor neutrino experiment with multiple detectors could provide a clean measurement of the $θ_{13}$ mixing angle, free from any parameter degeneracies and correlations induced by matter effect and the unknown leptonic Dirac CP phase. The current best constraint on the third mixing angle comes from the Chooz reactor neutrino experiment $\sin^{2}(2θ_{13})<0.2$ (90$ %$ C.L., $Δm_{\rm atm}^{2}=2.0 10^{-3}$ eV$^{2}$). Several projects of experiment, with different timescales, have been proposed over the last two years all around the world. Their sensitivities range from $\sin^{2}(2θ_{13})
description: Talk given at the 6th International Workshop on Neutrino Factories & Superbeams, July 26-Aug 1, 2004, Osaka, Japan. 5 pages
title: Simulation and measurement of a MEMS resonant displacement sensor
Creators: name: Schestak, Gregor
Publisher: name: TU Wien
Year: 2019
Subjects: subject: MEMS
subject: Simulation
subject: inplane-mode
subject: MEMS
subject: Simulation
subject: inplane-mode

description: Der Markt der MEMS Technologien ist immer noch stark im Wachstum. Einer der Gründe dafür ist die Möglichkeit komplexe Sensorik in immer kompakterer Bauform entwickeln zu können. Ein resonanter Sensor ist ein spezieller Typ, welcher sich gut mit MEMS Technologien umsetzten lässt. Aufgrund der kleinen Dimension und hoher Güte dieser Sensoren wirken sich äußere Einwirkungen auf die Sensorstruktur und Änderungen auf die Umgebung stark aus, wodurch sich auch die Resonanzfrequenz des Sensors relativ stark verändert. Im Fall dieser Diplomarbeit sollte sich die Resonanzfrequenz aufgrund einer Verschiebung in der Achse, welche normal zur Sensorebene steht, soweit verändern, dass man daraus auf die Verschiebung schließen kann. Hierfür wurde ein neues Design entwickelt und simuliert. Zum Vergleich wurde ein zweites, fertiges Design ebenfalls in einem ähnlichem Umfeld analysiert. Zur Bestätigung der Simulation, wurde dieser alternative Sensor in einem speziellen Messaufbau vermessen. Die Arbeit teilt sich daher in den großen Hauptteil Simulation, sowie Aufbau, Anregung und Vermessung des alternativen Sensors.
description: MEMS technology is still a growing economy, as it has many advantages in building complex sensors due to its small and compact dimensions. A resonator is a special type of structure which is used in the MEMS world very often. Because of the small design the resonance frequency depends a lot on the external influence on the sensor structure or the change of its environment. For this master thesis a resonator is expected to be sensitive to displacement from its out-of-plane axis. For this purpose a new design was developed and simulated and compared to a fabricated, second design, working under similar conditions. For the confirmation of this thesis the alternative design had to be constructed and measured. This thesis is therefore subdivided to the major part simulation and then the fabrication, excitation and measurement of a second sensor.
Prethermal quasiconserved observables in Floquet quantum systems
Creators: name: Yin, Chao
name: Peng, Pai
name: Huang, Xiaoyang
name: Ramanathan, Chandrasekhar
name: Cappellaro, Paola
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Prethermalization, by introducing emergent quasiconserved observables, plays a crucial role in protecting Floquet many-body phases over exponentially long time, while the ultimate fate of such quasiconserved operators can signal thermalization to infinite temperature. To elucidate the properties of prethermal quasiconservation in many-body Floquet systems, here we systematically analyze infinite temperature correlations between observables. We numerically show that the late-time behavior of the autocorrelations unambiguously distinguishes quasiconserved observables from non-conserved ones, allowing to single out a set of linearly-independent quasiconserved observables. By investigating two Floquet spin models, we identify two different mechanism underlying the quasi-conservation law. First, we numerically verify energy quasiconservation when the driving frequency is large, so that the system dynamics is approximately described by a static prethermal Hamiltonian. More interestingly, under moderate driving frequency, another quasiconserved observable can still persist if the Floquet driving contains a large global rotation. We show theoretically how to calculate this conserved observable and provide numerical verification. Having systematically identified all quasiconserved observables, we can finally investigate their behavior in the infinite-time limit and thermodynamic limit, using autocorrelations obtained from both numerical simulation and experiments in solid state nuclear magnetic resonance systems.
description: 12 pages, 9 figures. arXiv admin note: substantial text overlap with arXiv:1912.05799
Additional file 4 of Towards the restoration of the Mesoamerican Biological Corridor for large mammals in Panama: comparing multi-species occupancy to movement models
Creators: name: Meyer, Ninon F. V.
name: Moreno, Ricardo
name: Reyna-Hurtado, Rafael
name: Signer, Johannes
name: Balkenhol, Niko
Publisher: name: figshare
Year: 2020
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology
subject: Plant Biology

description: Additional file 4. Methods- Probability of occupancy and proportion of the study area.
Mobility edge in lattice QCD
Creators: name: Golterman, Maarten
name: Shamir, Yigal
name: Svetitsky, Benjamin
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We determine the location $λ_c$ of the mobility edge in the spectrum of the hermitian Wilson operator on quenched ensembles. We confirm a theoretical picture of localization proposed for the Aoki phase diagram. When $λ_c>0$ we also determine some key properties of the localized eigenmodes with eigenvalues $|λ|
description: revtex, 4 pages, 1 figure, minor changes
Naive Deckungsbeitragsvergleiche führen bei Vorverträgen in die Irre - Lieferung von Industrierüben zur Bioethanolherstellung
Creators: name: Musshoff, Oliver
name: Hirschauer, Norbert
name: Musshoff, Oliver
name: Hirschauer, Norbert
Publisher: name: Unknown
Year: 2011
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Land Economics/Use
subject: Vertragsdesign
subject: Vertragsakzeptanz
subject: Lieferverträge
subject: Industrierüben
subject: Contract design
subject: contract acceptance
subject: forward contracts
subject: sugar beet as a renewable resource

description: Bislang ist wenig über das Verhalten von Landwirten bei Vertragsangeboten für die Lieferung nachwachsender Rohstoffe bekannt. In der vorliegenden Untersuchung wird deshalb die Akzeptanz von Landwirten für Industrierübenlieferverträge untersucht. Dabei zeigt sich, dass das Antwortverhalten der Landwirte nicht den Prognosen entspricht, die sich auf der Grundlage gängiger Deckungsbeitragsvergleiche ergeben. Zudem wird deutlich, dass die Nachbesserung eines Vertrags, die nach einem erfolglosen ersten Vertragsangebot vorgenommen wird, eine geringere Akzeptanz bewirkt als ein sofortiges höheres Vertragsangebot.Little is known about the actual behavior of farmers who are offered forward contracts for renewable resources. The present survey therefore investigates farmers’ acceptance of sugar beet supply contracts. We find that the farmers’ responses are not in line with forecasts which are based on naïve gross margin comparisons. We furthermore find that the subsequent improvement of a contract offer which is made after an initial offer has been rejected by farmers finds a lower acceptance than an initially better offer.
Marketing, Cooperatives and Price Heterogeneity: Evidence from the CIS Dairy Sector
Creators: name: Sauer, Johannes
name: Gorton, Matthew
name: White, John
name: Sauer, Johannes
name: Gorton, Matthew
name: White, John
Publisher: name: Unknown
Year: 2011
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Price Heterogeneity
subject: Milk
subject: Cooperatives
subject: Armenia
subject: Moldova
subject: Ukraine
subject: Preisheterogenität
subject: Milch
subject: Kooperative
subject: Armenien
subject: Moldawien

description: Drawing on survey data, this paper identifies the determinants of variations in farm gate milk prices for three CIS countries (Armenia, Moldova and Ukraine). We apply a multi-level modeling approach, specifically a bootstrapped and selectivity bias corrected mixed-effects linear regression model. The analysis suggests three main strategies for farmers to improve the price received for their output: consolidation, cooperation and stable supply chain relationships. While selling through a marketing cooperative has a significant and positive effect on farm gate milk prices, the majority of non-members are reluctant to join. The size of dairy operations, trust and contracting also impact positively on the prices received by farmers. Policy implications are drawn. Basierend auf Umfragedaten identifiziert diese Studie Faktoren für eine Variation im Rohmilchpreis für verschiedene CIS Staaten (Armenien, Moldawien und die Ukraine). Es wird ein multi-level Modellierungsansatz verwandt in der Form eines mixed-effects Regressionsmodells unter Berücksichtigung eines möglichen Sampleselektionsfehlers (sample selection bias). The Analyse zeigt die folgenden Strategien für eine mögliche Realisierung eines höheren Rohmilchpreises auf: Konsolidierung, Kooperation und stabile Supply Chain Beziehungen. Während der Verkauf über Marketingkooperative einen signifikanten und positiven Effekt auf den Rohmilchpreis aufweist, ist die Mehrheit der Nichtmitglieder nicht zu einem Beitritt bereit. Die Betriebsgrösse, Vertrauen sowie vertragliche Bindungen zeigen ebenso einen positiven Einfluss auf den vom Milchbauern erzielten Absatzpreis. Entsprechende Politikimplikationen werden formuliert.