cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Evaluating Research Dataset Recommendations in a Living Lab
Creators: name: Keller, Jüri
name: Munz, Leon Paul Mondrian
Publisher: name: arXiv
Year: 2022
Subjects: subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences
subject: H.3.3

description: The search for research datasets is as important as laborious. Due to the importance of the choice of research data in further research, this decision must be made carefully. Additionally, because of the growing amounts of data in almost all areas, research data is already a central artifact in empirical sciences. Consequentially, research dataset recommendations can beneficially supplement scientific publication searches. We formulated the recommendation task as a retrieval problem by focussing on broad similarities between research datasets and scientific publications. In a multistage approach, initial recommendations were retrieved by the BM25 ranking function and dynamic queries. Subsequently, the initial ranking was re-ranked utilizing click feedback and document embeddings. The proposed system was evaluated live on real user interaction data using the STELLA infrastructure in the LiLAS Lab at CLEF 2021. Our experimental system could efficiently be fine-tuned before the live evaluation by pre-testing the system with a pseudo test collection based on prior user interaction data from the live system. The results indicate that the experimental system outperforms the other participating systems.
description: Best of 2021 Labs: LiLAS
Global Trends of CME Deflections Based on CME and Solar Parameters
Creators: name: Kay, C.
name: Opher, M.
name: Evans, R. M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Accurate space weather forecasting requires knowledge of the trajectory of coronal mass ejections (CMEs), including any deflections close to the Sun or through interplanetary space. Kay et al. 2013 introduced ForeCAT, a model of CME deflection resulting from the background solar magnetic field. For a magnetic field solution corresponding to Carrington Rotation (CR) 2029 (declining phase, April-May 2005), the majority of the CMEs deflected to the Heliospheric Current Sheet (HCS), the minimum in magnetic pressure on global scales. Most of the deflection occurred below 4 Rs. Here we extend ForeCAT to include a three dimensional description of the deflecting CME. We attempt to answer the following questions: a) Do all CMEs deflect to the magnetic minimum? and b) Does most deflection occur within the first few solar radii (~4 Rs)? Results for solar minimum and declining phase CMEs show that not every CME deflects to the magnetic minimum and that the deflection is typically determined below 2 Rs. Slow, wide, low mass CMEs in declining phase solar backgrounds with strong magnetic field and magnetic gradients exhibit the largest deflections. Local gradients related to active regions tend to cause the largest deviations from the deflection predicted by global magnetic gradients, but variations can also be seen for CMEs in the quiet sun regions of the declining phase CR. We show the torques due to differential forces along the CME can cause rotation about the CME's toroidal axis.
description: accepted for publication in ApJ
Planetesimal Interactions Can Explain the Mysterious Period Ratios of Small Near-Resonant Planets
Creators: name: Chatterjee, Sourav
name: Ford, Eric B.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: An intriguing trend among \kepler's multi-planet systems is an overabundance of planet pairs with period ratios just wide of a mean motion resonance (MMR) and a dearth of systems just narrow of them. Traditional planet formation models are at odds with these observations. They are also in contrast with the period ratios of radial-velocity-discovered multi-planet systems which tend to pile up at 2:1 MMR. We propose that gas-disk migration traps planets in a MMR. After gas dispersal, orbits of these trapped planets are altered through interaction with a residual planetesimal disk. We study the effects of planetesimal disk interactions on planet pairs trapped in 2:1 MMR using planets of mass typical of the Kepler planet candidates (KPC) and explore large ranges for the mass, and density profile of the planetesimal disk. We find that planet-planetesimal disk interactions naturally create the observed asymmetry in period-ratio distribution for large ranges of planetesimal disk and planet properties. If the planetesimal disk mass is above a threshold of ~0.2x the planet mass, these interactions typically disrupt MMR. Afterwards, the planets migrate in such a way that the final period-ratio is slightly higher than the integer ratio corresponding to the initial MMR. Below this threshold these interactions typically cannot disrupt the resonance and the period ratio stays close to the integer ratio. The threshold explains why the more massive planet pairs found by RV surveys are still in resonance. We encourage future research to explore how significantly the associated accretion would change the planets' atmospheric and surface properties.
description: 10 pages in ApJ format, 9 figures, Accepted to ApJ
title: Gestik, Dramatik und Narration am Klosterneuburger Ambo des Nikolaus von Verdun
Creators: name: Hochgatterer, Henriette
Year: 2022

description: Nikolaus von Verdun schuf für das Augustiner-Chorherrenstift Klosterneuburg eine gewaltige Goldschmiedearbeit aus feuervergoldeten Emailtafeln, in Grubenschmelztechnik auf Kupfer gearbeitet, die zu den größten bildnerischen Werken mit typologischem Programm zählt. In seiner Erstverwendung diente diese zur Verkleidung des Ambos in der Stiftskirche. Die vorliegende Arbeit konzentriert sich auf die, bisher nicht systematisch betrachteten, erzählerischen Qualitäten dieser Bilderwand. Mittels Bildanalyse und Bildvergleich werden die Leistungen und Strategien des Goldschmieds herausgestellt. Dies bedeutet, dass die chronologisch gereihten Darstellungen der neutestamentlichen Heilsgeschichte auf ihren visuell wahrnehmbaren Zusammenhang hin untersucht werden. In den nächsten Schritten wird die Binnennarration, geordnet nach einzelnen erzählerischen Elementen – wie die Bewältigung von Zeitlichkeit im Bild und die Vermittlung von Emotionen – analytisch betrachtet. Dabei wird der ausgeprägte Erzählwillen Meister Nikolaus’, das Interesse an pointierter Bildgestaltung mit eigenständigen Bildideen, deutlich. Die christologischen Szenen erweisen sich durch die narrativen Verbindungen als Bildzyklus. Bei den Einzelbildern ist, abhängig vom jeweiligen Thema, die Narrativität unterschiedlich intensiv ausgeprägt, aber stets finden sich Narreme, die Geschichten beim aufmerksamen Publikum indizieren.
Centrally symmetric configurations of order polytopes
Creators: name: Hibi, Takayuki
name: Matsuda, Kazunori
name: Ohsugi, Hidefumi
name: Shibata, Kazuki
Publisher: name: arXiv
Year: 2014
Subjects: subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics
subject: Primary 13P10, Secondary 52B20

description: It is shown that the toric ideal of the centrally symmetric configuration of the order polytope of a finite partially ordered set possesses a squarefree quadratic initial ideal. It then follows that the convex polytope arising from the centrally symmetric configuration of an order polytope is a normal Gorenstein Fano polytope.
description: 9 pages, Proof of Theorem 2.2 is simplified. Major revision on Section 3
The role of the System Biology program in Health and Disease: from biological networks to modern medicine.
Creators: name: Saveena Solanki
Publisher: name: Zenodo
Year: 2020
Subjects: System Biology,
Network Analysis

description: Human physiology incorporates integrated biological processes ranging from cell-to-cell interactions within a phenotypic, physiological response. Systematic biology tolerates the accuracy of these biological networks and inhibits the interaction between genotype and phenotype. The structure and dynamics of those networks control and determine the phenotypic state of the cell. Several cells and various tissues combine to produce a physiological response, which further controls the final state of the body's name. The network is embedded in a structure that controls order, which has led to an unhealthy condition called disease when disturbed unusually. Here, we present a diagnostic problem similar to the problem of error detection in engineering systems. We are reviewing the use of engineering methods to deal with human diseases from a biological perspective. Research into the human system has provided an accurate understanding of the chemical and physical properties contributing to the human body in the last few decades. In general, mitigation measures often reduce this interaction by building a more comprehensive network of organisms. Biological networks contain interactions between genes, proteins, and metabolites that combine to control cellular processes. While the interaction of many cells contributes to tissues' response, the various organs that make up different types of tissue continue to adapt to the body's response. These interactions form the basis for network design that identifies natural designs' principles that govern the body's response capacity. The review highlights the potential networks and modeling methods used to analyze human diseases. It shows the use of this analysis of cancer and diabetes. We introduce the concept of human-to-human cellularization consisting of five modules (data mining, communication, modeling, testing, and validation) to address human physiology and diseases supported by the system-level paradigm analysis. The review focuses on the importance of multiple biological and modeling networks and subsequent analysis of drug-specific diagnoses and the development of effective treatment modalities
Equivalence of Information and Effect.doc (European Journal of Appied Sciences - Vol.12, No.1) (European Journal of Applied Sciences - Vol.12, No.1)
Creators: name: Jöge, Friedhelm
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 450609
subject: Aboriginal and Torres Strait Islander mathematical, physical and chemical sciences (excl. astronomy and cosmology)

description: A formula is developed that shows the equivalence of Information and Effect and at the same time after transformation the Equivalence of Information flow and energy
Equivalence of Information and Effect.doc
Creators: name: Jöge, Friedhelm
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 450609
subject: Aboriginal and Torres Strait Islander mathematical, physical and chemical sciences (excl. astronomy and cosmology)

description: A formula is developed that shows the equivalence of Information and Effect and at the same time after transformation the Equivalence of Information flow and energy
Hedge to Retrieve Studies Related to Sri Lanka from OVID Medline
Creators: Campbell, Sandra M.
Publisher: name: University of Alberta Library
Year: 2020

This hedge is designed to retrieve studies related to Sri Lanka from the OVID Medline database.  This is an archived version of the filter.  For the current version see Health Sciences Search Filters https://ualberta.libapps.com/libguides/admin_c.php?g=342568&p=5109801
Advancements in the ADAPT Photospheric Flux Transport Model
Creators: name: Hickmann, Kyle S.
name: Godinez, Humberto C.
name: Henney, Carl J.
name: Arge, C. Nick
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Global maps of the solar photospheric magnetic flux are fundamental drivers for simulations of the corona and solar wind and therefore are important predictors of geoeffective events. However, observations of the solar photosphere are only made intermittently over approximately half of the solar surface. The Air Force Data Assimilative Photospheric Flux Transport (ADAPT) model uses localized ensemble Kalman filtering techniques to adjust a set of photospheric simulations to agree with the available observations. At the same time, this information is propagated to areas of the simulation that have not been observed. ADAPT implements a local ensemble transform Kalman filter (LETKF) to accomplish data assimilation, allowing the covariance structure of the flux transport model to influence assimilation of photosphere observations while eliminating spurious correlations between ensemble members arising from a limited ensemble size. We give a detailed account of the implementation of the LETKF into ADAPT. Advantages of the LETKF scheme over previously implemented assimilation methods are highlighted.
Galaxies as simple dynamical systems: observational data disfavor dark matter and stochastic star formation
Creators: name: Kroupa, Pavel
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: (Abridged) Galaxies are observed to be simple systems but the standard model of cosmology (SMoC) implies a haphazard merger history driven by dynamical friction on dark matter halos. The SMoC is tested here with the results that the dual dwarf galaxy theorem is in contradiction to the data if the SMoC is true, and the action of dynamical friction is not evident in the galaxy population. A consistency test for this conclusion comes from the significantly anisotropic distributions of satellite galaxies. Independently, the long history of failures of the SMoC have the likelihood that it describes the observed Universe to less than 10^-4 per cent. The implication for fundamental physics is that exotic dark matter particles do not exist and that consequently effective gravitational physics on the scales of galaxies and beyond ought to be non-Newtonian/non-Einsteinian. The data imply that scale-invariant dynamics, as discovered by Milgrom, is an excellent description of galaxies in the weak-field regime. Observations of stellar populations in galaxies suggest the galaxy-wide IMF, the IGIMF, to vary with star formation rate and that stochastic descriptions of star formation are inconsistent with the data. A consequence of this understanding of galactic astrophysics is that most dwarf satellite galaxies are formed as tidal dwarf galaxies in galaxy-galaxy encounters, that they follow the mass-metallicity relation, that galactic mergers are rare, that galaxies immersed in external potentials are physically larger than isolated galaxies and that star-forming galaxies form a main sequence. Eight predictions are offered which will allow the concepts raised here to be tested. A very conservative, cold- and warm-dark-matter-free cosmological model may be emerging from these considerations.
description: pdflatex, 46 pages, 13 figures; Canadian Journal of Physics, published; revised version has minor adjustments for consistency with published version, e.g. new ordering of the figures and footnotes
The Phase-Space Noncommutativity Effect on the Large and Small Wavefunction Components Approach at Dirac Equation
Creators: name: Haouam, Ilyas
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: By the large and small wave-function components approach we achieved the nonrela-tivistic limit of the Dirac equation in interaction with an electromagnetic potential in noncommutative phase-space, and we tested the effect of the phase-space noncommutativity on it, knowing that the nonrelativistic limit of the Dirac equation gives the Schrödinger-Pauli equation.
description: 7 pages
An algorithm for canonical forms of finite subsets of $\mathbb{Z}^d$ up to affinities
Creators: name: Paolini, Giovanni
Publisher: name: arXiv
Year: 2014
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: Discrete Mathematics (cs.DM)
subject: Group Theory (math.GR)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: 52C07

description: In this paper we describe an algorithm for the computation of canonical forms of finite subsets of $\mathbb{Z}^d$, up to affinities over $\mathbb{Z}$. For fixed dimension $d$, this algorithm has worst-case asymptotic complexity $O(n \log^2 n \, s\,μ(s))$, where $n$ is the number of points in the given subset, $s$ is an upper bound to the size of the binary representation of any of the $n$ points, and $μ(s)$ is an upper bound to the number of operations required to multiply two $s$-bit numbers. In particular, the problem is fixed-parameter tractable with respect to the dimension $d$. This problem arises e.g. in the context of computation of invariants of finitely presented groups with abelianized group isomorphic to $\mathbb{Z}^d$. In that context one needs to decide whether two Laurent polynomials in $d$ indeterminates, considered as elements of the group ring over the abelianized group, are equivalent with respect to a change of basis.
Open Access Skills & Tools for Research & Education
Creators: name: Aardening, Ron
Publisher: name: Zenodo
Year: 2023
Subjects: Open Access
Research
Education
Open Science
Open Access publishing
research output
maastricht university
maastricht university library

description: Presentation at the Maastricht Open Science Festival 2023, taking the participants on tour around the research cycle with stops based on a WooClap quiz to explore actions to comply with different OS/OA policies, and to make research output Open Access and suitable for reuse in Research and Teaching. . Abstract: Open Access Skills & Tools for Research & Education
 Explore the latest advancements in Open Access publishing and educational applications through perspectives from Dutch universities, funders, and publishers. Gain valuable knowledge about these developments that can help your current or future academic endeavours.
Russian doll spectrum in a non-Abelian string-net ladder
Creators: name: Schulz, M. D.
name: Dusuel, S.
name: Vidal, J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study a string-net ladder in the presence of a string tension. Focusing on the simplest non-Abelian anyon theory with a quantum dimension larger than two, we determine the phase diagram and find a Russian doll spectrum featuring size-independent energy levels as well as highly degenerate zero-energy eigenstates. At the self-dual points, we compute the gap exactly by using a mapping onto the Temperley-Lieb chain. These results are in stark constrast with the ones obtained for Fibonacci or Ising theories.
description: 7 pages, 5 figures, published version
Scheduling Network Maintenance Jobs with Release Dates and Deadlines to Maximize Total Flow Over Time: Bounds and Solution Strategies
Creators: name: Boland, Natashia
name: Kalinowski, Thomas
name: Kaur, Simranjit
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: We consider a problem that marries network flows and scheduling, motivated by the need to schedule maintenance activities in infrastructure networks, such as rail or general logistics networks. Network elements must undergo regular preventive maintenance, shutting down the arc for the duration of the activity. Careful coordination of these arc maintenance jobs can dramatically reduce the impact of such shutdown jobs on the flow carried by the network. Scheduling such jobs between given release dates and deadlines so as to maximize the total flow over time presents an intriguing case to study the role of time discretization. Here we prove that if the problem data is integer, and no flow can be stored at nodes, we can restrict attention to integer job start times. However if flow can be stored, fractional start times may be needed. This makes traditional strong integer programming scheduling models difficult to apply. Here we formulate an exact integer programming model for the continuous time problem, as well as integer programming models based on time discretization that can provide dual bounds, and that can - with minor modifications - also yield primal bounds. The resulting bounds are demonstrated to have small gaps on test instances, and offer a good trade-off for bound quality against computing time.
The ‘Uncle Tom’ dilemma: Minorities in power-sharing arrangements
Creators: name: Fraenkel, Jonathan
Publisher: name: Open Access Te Herenga Waka-Victoria University of Wellington
Year: 2022
Subjects: subject: 160699 Political Science not elsewhere classified
subject: FOS: Political science
subject: 160599 Policy and Administration not elsewhere classified

description: Mandatory power-sharing laws aim to balance power between groups in contexts where majoritarian democracy might disadvantage minorities. Yet, unless veto arrangements are in place, cabinet-level decision-making usually continues to operate under majority rule. Minority parties participating in such power-sharing executives may lose support in their own communities owing to a failure to deliver substantial reforms or to advance minority objectives and become seen as ‘Uncle Tom’ type figures who no longer represent their own community. This article explores examples of these dilemmas facing power-sharing cabinets in Zimbabwe, South Africa, Bosnia–Herzegovina, Fiji, and the French Pacific territory of New Caledonia.
title: Global perspectives on food politics and policy
Creators: name: Hernandez-Marroquin, Joceline Nayelle
Year: 2022

description: Das Verständnis der Ernährungssicherheit, der Ernährungssouveränität und deren vielfältiger Auslegungen bietet eine Grundlage für das Verständnis der politischen Ökonomie der Ernährung auf allen Ebenen— global, national/regional und lokal. Darüber hinaus kann die Untersuchung dieser politischen Ökonomien der Ernährung und ihrer Verflechtungen dazu beitragen, das Verhalten der verschiedenen politischen Akteure in einem Staat zu verstehen. Ziel dieser Arbeit ist es, die diskursiven Narrative der Ernährungssicherheit und der Ernährungssouveränität auf globaler Ebene zu kontextualisieren und sie mit dem Nationalstaat El Salvador zu verknüpfen. Das breite Spektrum dieser Diskurse wird in Bezug darauf untersucht, wie sie auf der nationalen und lokalen Ebene der salvadorianischen politischen Gesellschaft und insbesondere in der politischen Arena erscheinen.
description: Understanding food and nutrition security, food sovereignty and the many interpretations formed by various actors provides a basis for understanding the political economy of food on all levels— international, national/regional, and local. Furthermore, examining these political economies of food and how they interlace can aid in understanding the behavior of various actors engaged in the politics of a state. The aim of this thesis is to contextualize the discursive narratives of the food and nutrition security and food sovereignty politics of food at the global level and interlink them to the nation-state of El Salvador. The broad scope of these discourses will be examined in relation to how they appear at the national and local levels of Salvadoran political society, and more specifically in the policy arena.
A Non-Trivial Zero Length Limit of the Nambu-Goto String
Creators: name: Pavšič, Matej
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show that a Nambu-Goto string has a nontrivial zero length limit which corresponds to a massless particle with extrinsic curvature. The system has the set of six first class constraints, which restrict the phase space variables so that the spin vanishes. Upon quantization, we obtain six conditions on the state, which can be represented as a wave function of position coordinates, $x^μ$, and velocities, $q^μ$. We have found a wave function $ψ(x,q)$ that turns out to be a general solution of the corresponding system of six differential equations, if the dimensionality of spacetime is eight. Though classically the system is just a point particle with vanishing extrinsic curvature and spin, the quantized system is not trivial, because it is consistent in eight, but not in arbitrary, dimensions.
description: 13 pages; Improved Section 3
Complete elimination of information leakage in continuous-variable quantum communication channels
Creators: name: Jacobsen, Christian S.
name: Madsen, Lars S.
name: Usenko, Vladyslav C.
name: Filip, Radim
name: Andersen, Ulrik L.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In all lossy communication channels realized to date, information is inevitably leaked to a potential eavesdropper. Here we present a communication protocol that does not allow for any information leakage to a potential eavesdropper in a purely lossy channel. By encoding information into a restricted Gaussian alphabet of squeezed states we show, both theoretically and experimentally, that the Holevo information between the eavesdropper and the intended recipient can be exactly zero in a purely lossy channel while minimized in a noisy channel. This result is of fundamental interest, but might also have practical implications in extending the distance of secure quantum key distribution.
description: 9 pages, 5 figures
title: Modern fire suppression materials and methods
title: Σύγχρονα υλικά και μέσα κατάσβεσης πυρκαγιών
Creators: name: Kolovos, Konstantinos G.
name: Kiteas, George G.
Publisher: name: Kallipos, Open Academic Editions
Year: 2023
Subjects: Πυρκαγιά
Καύση
Καύσιμες Ύλες
Δασικές Πυρκαγιές
Συστήματα Πυρόσβεσης
Ενεργός Κατάσβεση
Κατασβεστικά Υλικά
Κατασβεστικοί Αφροί
Βιοδιασπώμενα Κατασβεστικά Υλικά
Ετερογενή Κατασβεστικά Μείγματα
Επιβραδυντικά Υλικά
Επιβραδυντές φλόγας
Καινοτόμα Επιβραδυντικά Υλικά
Combustion
Combustible Materials
Forest Fires
Fire Suppression Systems
Active Fire Suppression
Fire Suppression Materials
Firefighting Foams
Biodegradable Fire Suppression Materials
Heterogeneous Fire Suppression Mixtures
Flame Retardant Materials
Flame Retardants
Innovative Flame Retardant Materials
Fire
Εναλλακτικές πηγές κατάσβεσης
Αυτόματα συστήματα πυρόσβεσης
Συστήματα πυρόσβεσης με τη χρήση νερού
Συστήματα πυρόσβεσης σε κουζίνες και σε αεροκάφη
Alternative Fire Suppression Sources
Automatic Fire Suppression Systems
Water-Based Fire Suppression Systems
Fire Suppression Systems in Kitchens and Aircrafts
Ξηρές Σκόνες
Dry Powders
Ελαφρύ Νερό
Light Water
Πρόσθετα Νερού
Water Additives
Εκνεφώματα Νερού
Water Mists
Αερολύματα
Aerosols
Αλογονωμένοι Υδρογονάνθρακες
Halogenated Hydrocarbons
Υπερφθοράνθρακες (PFCs)
Perfluorinated Compounds (PFCs)

description: The goals of the book are to present, as thoroughly as possible, the considered "modern extinguishing materials", as well as the identification, description, analysis, and the fire extinguishing evaluation of those materials, currently used in business fire extinguishing worldwide, along with highlighting their most important physicochemical properties and the investigation of their interaction with the environment.
description: Στόχοι του συγγράμματος είναι η παρουσίαση, κατά το δυνατόν πιο εμπεριστατωμένα, των θεωρούμενων ως «σύγχρονων κατασβεστικών υλικών», καθώς και ο εντοπισμός, η περιγραφή, η ανάλυση και η αξιολόγηση των κατασβεστικών εκείνων υλικών, που χρησιμοποιούνται σήμερα στις επιχειρήσεις πυρόσβεσης παγκοσμίως, μαζί με την επισήμανση των σημαντικότερων φυσικοχημικών τους ιδιοτήτων και τη διερεύνηση της αλληλεπίδρασής τους με το περιβάλλον.
Beyond ECH capacities
Creators: name: Hutchings, Michael
Publisher: name: arXiv
Year: 2014
Subjects: subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics

description: ECH (embedded contact homology) capacities give obstructions to symplectically embedding one four-dimensional symplectic manifold with boundary into another. These obstructions are known to be sharp when the domain and target are ellipsoids (proved by McDuff), and more generally when the domain is a "concave toric domain" and the target is a "convex toric domain" (proved by Cristofaro-Gardiner). However ECH capacities often do not give sharp obstructions, for example in many cases when the domain is a polydisk. This paper uses more refined information from ECH to give stronger symplectic embedding obstructions when the domain is a polydisk, or more generally a convex toric domain. We use these new obstructions to reprove a result of Hind-Lisi on symplectic embeddings of a polydisk into a ball, and generalize this to obstruct some symplectic embeddings of a polydisk into an ellipsoid. We also obtain a new obstruction to symplectically embedding one polydisk into another, in particular proving the four-dimensional case of a conjecture of Schlenk.
description: 41 pages; v4: a couple of minor corrections and clarifications
$\mathcal{I}$-degenerate pseudo-Riemannian metrics
Creators: name: Hervik, Sigbjorn
name: Haarr, Anders
name: Yamamoto, Kei
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Physics (math-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper we study pseudo-Riemannian spaces with a degenerate curvature structure i.e. there exists a continuous family of metrics having identical polynomial curvature invariants. We approach this problem by utilising an idea coming from invariant theory. This involves the existence of a boost which is assumed to extend to a neighbourhood. This approach proves to be very fruitful: It produces a class of metrics containing all known examples of $\mathcal{I}$-degenerate metrics. To date, only Kundt and Walker metrics have been given, however, our study gives a plethora of examples showing that $\mathcal{I}$-degenerate metrics extend beyond the Kundt and Walker examples. The approach also gives a useful criterion for a metric to be $\mathcal{I}$-degenerate. Specifically, we use this to study the subclass of VSI and CSI metrics (i.e., spaces where polynomial curvature invariants are all vanishing or constants, respectively).
description: 23 pages; v2: changed title+notation and cleaned up a bit
Open Access publishing: LAW - Presentation at the Research Meeting Open Science, 6 June 2023
Creators: name: Aardening, Ron
Publisher: name: Zenodo
Year: 2023
Subjects: open access publishing
open science policy
research output
maastricht university
maastricht university library

description: Open Access publishing, options, opportunities, best practices, obligations and more concerning the Faculty Open Science plan. Presentation at the Maastricht University LAW research meeting about Open Science.
Peter Damian Richardson - Bibliography from PETER DAMIAN RICHARDSON. 22 August 1935 — 21 April 2020
Creators: name: Launder, Brian
Publisher: name: The Royal Society
Year: 2023
Subjects: Biomedical Engineering not elsewhere classified

description: Peter Richardson, over a remarkably diverse career, made outstanding contributions to biomedical engineering in the performance of artificial lungs and in the treatment of atherosclerosis and thrombi. Despite difficult teenage years, he read mechanical engineering at Imperial College, London, continuing thereafter to complete a PhD on heat transfer from rotating discs. He obtained a post-doctoral position in a similar field at Brown University that led to an academic appointment there that lasted throughout his career. Following his first sabbatical leave, he became deeply interested in physiological flows. This led to an intensive and productive period of research with Pierre Galletti in advancing the development of the artificial lung. When it became evident that artificial lungs, like their natural counterpart, suffered similar problems of depositions on artery walls and thrombi, he re-directed his research to diagnosing and alleviating these problems, collaborating in this research for over 30 years with Gustav Born FRS. At Brown, besides his research, he is affectionately remembered for his roles in chairing at senior levels often challenging committee meetings.
Parameterized Synthesis Case Study: AMBA AHB (extended version)
Creators: name: Bloem, Roderick
name: Jacobs, Swen
name: Khalimov, Ayrat
Publisher: name: arXiv
Year: 2014
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: We revisit the AMBA AHB case study that has been used as a benchmark for several reactive syn- thesis tools. Synthesizing AMBA AHB implementations that can serve a large number of masters is still a difficult problem. We demonstrate how to use parameterized synthesis in token rings to obtain an implementation for a component that serves a single master, and can be arranged in a ring of arbitrarily many components. We describe new tricks -- property decompositional synthesis, and direct encoding of simple GR(1) -- that together with previously described optimizations allowed us to synthesize the model with 14 states in 30 minutes.
description: Moved to appendix some not very important proofs. To section 'optimizations: added the model for 0-process. Extended version of the paper submitted to SYNT 2014
title: Human+
Creators: name: Hochwarter, Christoph
Year: 2022

description: Die vorliegende Arbeit befasst sich aus technikethischer Perspektive mit dem deutsch-österreichischen Sicherheitsforschungsprojekt Human+, welches darauf abzielt, durch die Auswertung und Integration verschiedener Datentypen (z.B. Social-Media-Daten, In-Situ-Daten, Satellitenfernerkundungsdaten) Migrationsprognosen zu erstellen und ein Echtzeitlagebild für Behörden und Organisationen mit Sicherheitsaufgaben bereitzustellen. Dies soll im Falle von erneuten Fluchtereignissen wie in den Jahren 2015/2016 dazu dienen, die Informationslage für die beteiligten Organisationen zu verbessern und so die Gewährleistung humanitärer Sicherheit zu unterstützen. Im Rahmen der vorliegenden Arbeit werden zwei Ziele verfolgt: ein inhaltliches und ein methodisches Ziel. Das inhaltliche Ziel ist die technikethische Bewertung von Human+. Das methodische Ziel ist die Erarbeitung eines Bewertungsframeworks hierzu, welches einerseits auf Human+ Anwendung finden können soll, andererseits aber generisch genug ist, um auch für andere Sicherheitsforschungsprojekte adaptierbar zu sein. Hierzu werden nach einer Standortbestimmung der vorliegenden Arbeit zwischen Technikethik und Technikfolgenabschätzung durch Rückgriff auf ein Principlism-Fundament und verschiedene etablierte Ansätze der Technikethik, sowie auf den Negativen Utilitarismus, Grundlagen erarbeitet, und ein Bewertungsframework daraus erstellt. Dieses wird anschließend exemplarisch für die technikethische Analyse von Human+ herangezogen.
description: This master thesis examines the German-Austrian security research project Human+. The goal of Human+ is the analysis and integration of a broad spectrum of different data (e.g. social media, in-situ, satellite remote sensing), in order to predict migration and to provide a real time overview of the situation for authorities and organizations responsible for security. Both (predictions and overview of the situation) are intended to improve situational awareness for involved organizations in cases similar to the refugee crisis in 2015/2016 in order to support the provision of human security. Thus, this thesis has two objectives: the ethical evaluation of Human+, and as a prerequisite for this, the development of an evaluation framework that is both applicable to Human+ and sufficiently generic to be adapted for other security research projects as well. Essential constituents of the evaluation framework will be found in Principlism, in distinct approaches to technology ethics, and also in negative utilitarianism. The framework will then be applied for the ethical evaluation of Human+.
The Overlooked Potential of Generalized Linear Models in Astronomy - I: Binomial Regression
Creators: name: de Souza, R. S.
name: Cameron, E.
name: Killedar, M.
name: Hilbe, J.
name: Vilalta, R.
name: Maio, U.
name: Biffi, V.
name: Ciardi, B.
name: Riggs, J. D.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Revealing hidden patterns in astronomical data is often the path to fundamental scientific breakthroughs; meanwhile the complexity of scientific inquiry increases as more subtle relationships are sought. Contemporary data analysis problems often elude the capabilities of classical statistical techniques, suggesting the use of cutting edge statistical methods. In this light, astronomers have overlooked a whole family of statistical techniques for exploratory data analysis and robust regression, the so-called Generalized Linear Models (GLMs). In this paper -- the first in a series aimed at illustrating the power of these methods in astronomical applications -- we elucidate the potential of a particular class of GLMs for handling binary/binomial data, the so-called logit and probit regression techniques, from both a maximum likelihood and a Bayesian perspective. As a case in point, we present the use of these GLMs to explore the conditions of star formation activity and metal enrichment in primordial minihaloes from cosmological hydro-simulations including detailed chemistry, gas physics, and stellar feedback. We predict that for a dark mini-halo with metallicity $\approx 1.3 \times 10^{-4} Z_{\bigodot}$, an increase of $1.2 \times 10^{-2}$ in the gas molecular fraction, increases the probability of star formation occurrence by a factor of 75%. Finally, we highlight the use of receiver operating characteristic curves as a diagnostic for binary classifiers, and ultimately we use these to demonstrate the competitive predictive performance of GLMs against the popular technique of artificial neural networks.
description: 20 pages, 10 figures, 3 tables, accepted for publication in Astronomy and Computing
Half-flat structures inducing Einstein metrics on homogeneous spaces
Creators: name: Raffero, Alberto
Publisher: name: arXiv
Year: 2014
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C10, 53C25, 53C30

description: In this paper, we consider half-flat $SU(3)$-structures and the subclasses of coupled and double structures. In the general case we show that the intrinsic torsion form $w_1^-$ is constant in each of the two subclasses. We then consider the problem of finding half-flat structures inducing Einstein metrics on homogeneous spaces. We give an example of a left invariant half-flat (non coupled and non double) structure inducing an Einstein metric on $S^3\times S^3$ and we show there does not exist any left invariant coupled structure inducing an ${\rm Ad}(S^1)$-invariant Einstein metric on it. Finally, we show that there are no coupled structures inducing the Einstein metric on Einstein solvmanifolds and on homogeneous Einstein manifolds of nonpositive sectional curvature.
description: 17 pages, to appear in Annals of Global Analysis and Geometry
แนวทางการพัฒนารูปแบบการสื่อสารการตลาดแบบบูรณาการเพื่อส่งเสริมคุณค่าตราสินค้าการท่องเที่ยวชุมชน จังหวัดจันทบุรี
Creators: name: สมพงษ์ เส้งมณีย์
Publisher: name: Faculty of Communication  arts, Rambhai Barni Rajatbhat University
Year: 2022
Subjects: community- based tourism
Integrated marketing communication tool
Travel brand equity
Chanthaburi

description: Interdisciplinary social sciences and communication Journal, 5, 3, 1-10
Analog quantum simulation of gravitational waves in a Bose-Einstein condensate
Creators: name: Bravo, Tupac
name: Sabín, Carlos
name: Fuentes, Ivette
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We show how to vary the physical properties of a Bose-Einstein condensate (BEC) in order to mimic an effective gravitational-wave spacetime. In particular, we focus in the simulation of the recently discovered creation of particles by real spacetime distortion in box-type traps. We show that, by modulating the speed of sound in the BEC, the phonons experience the effects of a simulated spacetime ripple with experimentally amenable parameters. These results will inform the experimental programme of gravitational wave astronomy with cold atoms.
description: 9 pages. I. F. previously published as I. Fuentes-Guridi and I.Fuentes-Schuller. v2: minor changes, references added
Biophilic Architecture for restoration and therapy within the built environment: A Review
Creators: name: Asim, Farhan
name: Rai, Shreya
name: Shree, Venu
Publisher: name: Visions for Sustainability
Year: 2020

description: Can ‘restoration and therapy in design’ signify something more than the places like hospitals and healing gardens? Can those restorative environments be brought inside the working and living environments to mitigate the psychological problem at the source? The main objective of this paper is to look at the strategies and developments of Biophilic design with respect to therapy and restoration in order to achieve sustainability in terms of quality of life within the immediate built-environment. The paper explores the mental health issues under the domains of built-environment and indoor environment with respect to their connection with nature. Biophilic design has gained a favourable momentum within the last four decades and is now visualised as a medium that bridges the gap between humans and the nature. Out of a variety of measures of sustainable environmental design, biophilic design focuses on the end-results of naturally nurtured or inspired habitats and workplaces. It embodies strategies of Green and Intelligent buildings, works as a mitigation strategy for foul indoor environment and establishes the vision that veristic sustainability can only be achieved if there is qualitative control over human physiological prosperity and psychological health. In context of work efficiency, preference and productivity within the indoor environment, it is seen as a promoter of constructive thoughts and enhancer of creativity. The paper aims to enlist biophilic design and retrofitting strategies, which can improve cognitive function, reduce stress and provide mental peace within the built environment.
description: Visions for Sustainability, New Visions (2020)
Critical and multicritical behavior in the Ising-Heisenberg universality class
Creators: name: Sorokin, A. O.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences
subject: 82B27

description: Critical behavior of three-dimensional classical frustrated antiferromagnets with a collinear spin ordering and with an additional twofold degeneracy of the ground state is studied. We consider two lattice models, whose continuous limit describes a single phase transition with a symmetry class differing from the class of non-frustrated magnets as well as from the classes of magnets with non-collinear spin ordering. A symmetry breaking is described by a pair of independent order parameters, which are similar to order parameters of the Ising and O(N) models correspondingly. Using the renormalization group method, it is shown that a transition is of first order for non-Ising spins. For Ising spins, a second order phase transition from the universality class of the O(2) model may be observed. The lattice models are considered by Monte Carlo simulations based on the Wang-Landau algorithm. The models are a ferromagnet on a body-centered cubic lattice with the additional antiferromagnetic exchange interaction between next-nearest-neighbor spins and an antiferromagnet on a simple cubic lattice with the additional interaction in layers. We consider the cases N=1,2,3 and in all of them find a first-order transition. For the N=1 case we exclude possibilities of the second order or pseudo-first order of a transition. An almost second order transition for large N is also discussed.
description: 13 pages, 12 figures
Bayesian estimation of the multifractality parameter for image texture using a Whittle approximation
Creators: name: Combrexelle, Sébastien
name: Wendt, Herwig
name: Dobigeon, Nicolas
name: Tourneret, Jean-Yves
name: McLaughlin, Steve
name: Abry, Patrice
Publisher: name: arXiv
Year: 2014
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Methodology (stat.ME)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Texture characterization is a central element in many image processing applications. Multifractal analysis is a useful signal and image processing tool, yet, the accurate estimation of multifractal parameters for image texture remains a challenge. This is due in the main to the fact that current estimation procedures consist of performing linear regressions across frequency scales of the two-dimensional (2D) dyadic wavelet transform, for which only a few such scales are computable for images. The strongly non-Gaussian nature of multifractal processes, combined with their complicated dependence structure, makes it difficult to develop suitable models for parameter estimation. Here, we propose a Bayesian procedure that addresses the difficulties in the estimation of the multifractality parameter. The originality of the procedure is threefold: The construction of a generic semi-parametric statistical model for the logarithm of wavelet leaders; the formulation of Bayesian estimators that are associated with this model and the set of parameter values admitted by multifractal theory; the exploitation of a suitable Whittle approximation within the Bayesian model which enables the otherwise infeasible evaluation of the posterior distribution associated with the model. Performance is assessed numerically for several 2D multifractal processes, for several image sizes and a large range of process parameters. The procedure yields significant benefits over current benchmark estimators in terms of estimation performance and ability to discriminate between the two most commonly used classes of multifractal process models. The gains in performance are particularly pronounced for small image sizes, notably enabling for the first time the analysis of image patches as small as 64x64 pixels.
Webinars sobre Buenas Prácticas en los Procesos Editoriales de Revistas Científicas para LILACS (2019) - Sesión IV - Constituición del equipo editorial
Creators: name: BIREME/OPS/OMS
name: Trzesniak, Dr. Piotr
Publisher: name: Zenodo
Year: 2019
Subjects: Buenas prácticas
Ciencia aberta
LILACS
Revista LILACS
Editores LILACS
Buenas Prácticas Editoriales

description: (04|09) EQUIPO EDITORIAL - Buenas Prácticas Proceso Editorial LILACS 2019 • Sesión 04 | 18 de junio de 2019 • Tema: "Constituición del equipo editorial" • Ponente: Prof. Dr. Piotr Trzesniak
Analytical and numerical studies of the one-dimensional sawtooth chain
Creators: name: Jiang, Jian-Jun
name: Liu, Yong-Jun
name: Tang, Fei
name: Yang, Cui-Hong
name: Sheng, Yu-Bo
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: By using the analytical coupled cluster method, the numerical exact diagonalization method, and the numerical density matrix renormalization group method, we investigated the properties of the one-dimensional sawtooth chain. The results of the coupled cluster method based on Neel state demonstrate that the ground state is in the quasi-Neel-long-range order state when aac2. The results of the coupled cluster method and the density matrix renormalization group method both disclose that the type of the quantum phase transition occurring at ac2 belongs to the first-order transition.
description: accepted version