cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Προσομοιώσεις της ισχυρής σεισμικής κίνησης στο κοντινό πεδίο του σεισμού της Κω-Αλικαρνασσού 2017
Creators: name: Χρήστου, Αντώνιος Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Προσομοιώσεις
Ισχυρή σεισμική κίνηση
Κοντινό πεδίο
Simulations
Strong ground motion
Near field

description: Ο σεισμός της 20ης Ιουλίου 2017 (22:31UTC, M6.6) με επίκεντρο στη θαλάσσια περιοχή ανατολικά της νήσου Κω, προκάλεσε βλάβες τόσο στην πόλη της Κω, όσο και στην περιοχή της Αλικαρνασσού (Bodrum) της Τουρκίας. Δεν υπάρχουν καταγραφές της ισχυρής σεισμικής κίνησης στην πόλη της Κω για να ερμηνευθεί η κατανομή των βλαβών, και να διερευνηθεί η θέση και η κλίση του ρήγματος. Χρησιμοποιήθηκαν μικρού μεγέθους σεισμοί, ως εμπειρικές συναρτήσεις Green, και προσομοιώθηκε η ισχυρή σεισμική κίνηση στην πόλη της Κω. Για το λόγο αυτόν, συλλέχθηκαν όλα τα διαθέσιμα επιταχυνσιογραφήματα του κύριου σεισμού και των μετασεισμών του με Μ≥3.0. Διερευνήθηκαν δημοσιευμένα μοντέλα ολίσθησης της σεισμικής πηγής και προσδιορίσθηκε η περιοχή έκλυσης της μεγαλύτερης ενέργειας, (Strong Motion Generation Area, SMGA). Με βάση αυτήν και καταγραφές του κύριου σεισμού και των μετασεισμών καθορίστηκαν οι τιμές των παραμέτρων της σεισμικής πηγής, και στη συνέχεια βαθμονομήθηκαν στις θέσεις που υπήρχαν καταγραφές της ακολουθίας. Η προσομοίωση της ισχυρής δόνησης στην πόλη της Κω δίνει τιμές μέγιστης εδαφικής επιτάχυνσης μεταξύ 0.21g-0.28g, σε καλή συμφωνία με αποτελέσματα άλλων προσεγγίσεων εκτίμησής της, ενισχύοντας την αξιοπιστία της μεθοδολογίας των εμπειρικών συναρτήσεων Green (EGF).
description: The 20th July 2017 earthquake (22:31UTC, M6.6) with epicentre offshore of Kos island, caused damage both in Kos town and in Bodrum of Turkey. There are no records of strong ground motion in Kos town to relate with observed damage, and further investigation of the location and slip distribution on the fault plane. Here, we used small magnitude earthquakes as Empirical Green Functions, and simulated the mainshock’s strong ground motion in Kos town. We collected all the available accelerograms of the mainshock and its aftershocks with magnitude Μ≥3.0. We investigated published models of seismic source properties and determined the region of the strongest release of energy (referred to as Strong Motion Generation Area, SMGA). Based on this and on records of mainshock and its aftershocks, we searched the optimum values of seismic source parameters which best fitted the observed records. Having calibrated our model, we performed a blind simulation of the motion that would have been recorded at the strong motion station in Kos town. Our results predict values of peak ground acceleration between 0.21g to 0.28g, in good agreement with results of other approaches, strengthening the reliability of the EGFs method.
Littlest Higgs Model with T-Parity Confronting the New Data on D^0-\bar D^0 Mixing
Creators: name: Blanke, Monika
name: Buras, Andrzej J.
name: Recksiegel, Stefan
name: Tarantino, Cecilia
name: Uhlig, Selma
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Motivated by the first experimental evidence of meson oscillations in the D system, we study D^0 - \bar D^0 mixing in the Littlest Higgs model with T-parity, we investigate its role in constraining the model parameters and its impact on the most interesting flavour observables. We find that the experimental data are potentially strongly constraining but at present limited by large theoretical uncertainties in the long-distance Standard Model contribution to D^0 - \bar D^0 mixing.
description: 13 pages, 5 figures, 1 table. Note added on the omitted term in Z-penguin contribution. For an updated analysis see arXiv:0906.5454
Ζητήματα συμβολαιογραφικής ακυρότητας στο Εθνικό Κτηματολόγιο
Creators: name: Σούρμπας-Σερέτης, Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Κτηματολόγιο
Ακυρότητα
Συμβολαιογραφική
Land Registration
Invalidity
Notarial

description: Η παρούσα εργασία παρουσιάζει όχι μόνο την έννοια της ακυρότητας του συμβολαιογραφικού εγγράφου με την στενή τυπική της μορφή, φωτίζοντας σχετικές νομοθετικές διατάξεις διάσπαρτες σε όλο το φάσμα της νομοθεσίας, αλλά επιχειρεί να προσδιορίσει και τον ρόλο του συμβολαιογράφου στην έννομη τάξη και την σημασία των εγγράφων που αυτός συντάσσει ιδίως στα πλαίσια του Κτηματολογικού Δικαίου. Ο έλεγχος νομιμότητας, που αποτελεί ουσιαστικό στοιχείο του κτηματολογικού δικαίου, τα τεκμήρια των εγγραφών και η προστασία των καλόπιστων τρίτων αναλύονται στην παρούσα εργασία. Η συγκεκριμένη διπλωματική δύναται να λειτουργήσει ως βοήθημα στον μελετητή ου Κτηματολογικού Δικαίου με δεδομένο ότι το συμβολαιογραφικό έγγραφο αποτελεί την εγγραπτέα πράξη , που «κυριαρχεί» σε όλα τα στάδια του θεσμού του κτηματολογίου.
description: The present Thesis does not only present a definition for invalidity of a notarial document in its strictly typical form, shedding light on relevant laws scattered throughout the legal spectrum, but it also attempts to identify the role of the Notary in the legal order as well as the importance of the deeds concluded by the Notary, in particular in the context of Land Law. This Thesis analyzes legality, an essential element of Land Law, the registrations exhibits and the protection of bona fide third parties. The same may also serve as an aid to the Land Law researcher, given that notarial deeds represent the acts of mandatory registration “dominating” all Land Registration stages.
Generation of Bianchi Type V Bulk Viscous Cosmological Models with Time Dependent $Λ$-Term
Creators: name: Pradhan, Anirudh
name: Jotania, Kanti
name: Rai, Anju
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Bianchi type V bulk viscous fluid cosmological models are investigated with dynamic cosmological term $Λ(t)$. Using a generation technique (Camci {\it et al.}, 2001), it is shown that the Einstein's field equations are solvable for any arbitrary cosmic scale function. Solutions for particular forms of cosmic scale functions are also obtained. The cosmological constant is found to be decreasing function of time, which is supported by results from recent type Ia supernovae observations. Some physical and geometrical aspects of the models are also discussed.
description: 22 pages, 3 figures, Some typos corrected
Author Correction: Chemokine receptor trafficking coordinates neutrophil clustering and dispersal at wounds in zebrafish.
Creators: name: Coombs, Caroline
name: Georgantzoglou, Antonios
name: Walker, Hazel A
name: Patt, Julian
name: Merten, Nicole
name: Poplimont, Hugo
name: Busch-Nentwich, Elisabeth M
name: Williams, Sarah
name: Kotsi, Christina
name: Kostenis, Evi
name: Sarris, Milka
Publisher: name: Springer Science and Business Media LLC
Year: 2020
Subjects: 46 Information and Computing Sciences
4303 Historical Studies
43 History, Heritage and Archaeology
16 Peace, Justice and Strong Institutions

description: An amendment to this paper has been published and can be accessed via a link at the top of the paper.
Two-flux tunable Aharonov-Bohm caging in a photonic lattice
Creators: name: Brosco, V.
name: Pilozzi, L.
name: Conti, C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the Aharonov-Bohm caging effect in a one-dimensional lattice of theta-shaped units defining a chain of interconnected plaquettes, each one threaded by two synthetic flux lines. In the proposed system, light trapping results from the destructive interference of waves propagating along three arms, this implies that the caging effect is tunable and it can be controlled by changing the tunnel couplings $J$. These features reflect on the diffraction pattern allowing to establish a clear connection between the lattice topology and the resulting AB interference.
Competition of Self-Organized Rotating Spiral Autowaves in a Nonequilibrium Dissipative System of Three-Level Phaser
Creators: name: Makovetskii, D. N.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Cellular Automata and Lattice Gases (nlin.CG)
subject: Neural and Evolutionary Computing (cs.NE)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We present results of cellular automata based investigations of rotating spiral autowaves in a nonequilibrium excitable medium which models three-level paramagnetic microwave phonon laser (phaser). The computational model is described in arXiv:cond-mat/0410460v2 and arXiv:cond-mat/0602345v1 . We have observed several new scenarios of self-organization, competition and dynamical stabilization of rotating spiral autowaves under conditions of cross-relaxation between three-level active centers. In particular, phenomena of inversion of topological charge, as well as processes of regeneration and replication of rotating spiral autowaves in various excitable media were revealed and visualized for mesoscopic-scale areas of phaser-type active systems, which model real phaser devices.
description: 4 pages. Version 2 - added reference to an extended variant of this work
On the stickiness of CO$_{2}$ and H$_{2}$O ice particles
Creators: name: Arakawa, Sota
name: Krijt, Sebastiaan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Laboratory experiments revealed that CO$_{2}$ ice particles stick less efficiently than H$_{2}$O ice particles, and there is an order of magnitude difference in the threshold velocity for sticking. However, the surface energies and elastic moduli of CO$_{2}$ and H$_{2}$O ices are comparable, and the reason why CO$_{2}$ ice particles were poorly sticky compared to H$_{2}$O ice particles was unclear. Here we investigate the effects of viscoelastic dissipation on the threshold velocity for sticking of ice particles using the viscoelastic contact model derived by Krijt et al. We find that the threshold velocity for sticking of CO$_{2}$ ice particles reported in experimental studies is comparable to that predicted for perfectly elastic spheres. In contrast, the threshold velocity for sticking of H$_{2}$O ice particles is an order of magnitude higher than that predicted for perfectly elastic spheres. Therefore, we conclude that the large difference in stickiness between CO$_{2}$ and H$_{2}$O ice particles would mainly originate from the difference in the strength of viscoelastic dissipation, which is controlled by the viscoelastic relaxation time.
description: 15 pages, 7 figures. Accepted for publication in ApJ
A Canis Major over-density imaging survey. I. Stellar content and star-count maps : A distinctly elongated body of main sequence stars
Creators: name: Butler, D. J.
name: Martinez-Delgado, D.
name: Rix, H-W.
name: Penarrubia, J.
name: de Jong, J. T. A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: [Abridged] We present first results from a large-area (~80degx20deg), sparsely sampled two-filter (B,R) imaging survey towards the Canis Major stellar over-density, claimed to be a disrupting Milky Way satellite galaxy. Utilizing stellar colour-magnitude diagrams reaching to B ~ 22 mag, we provide a first delineation of its surface density distribution using main sequence stars. Its projected shape is highly elongated, nearly parallel to the Galactic plane, with an axis ratio of >~ 5:1, substantially more so than what Martin et al. originally found. We also provide a first map of a prominent over-density of blue, presumably younger main sequence stars, which appears to have a maximum near [l,b = 240,-7 deg]. The young population is markedly more localized. We estimate an upper limit on the line-of-sight (l.o.s.) depth of the old population based on the main sequence width, obtaining sigma_los < 1.8 +/- 0.3 kpc, at an adopted D_helio = 7.5 +/- 1 kpc. For the young stellar population, we find sigma_los < 1.5 kpc. There are different explanations for the CMa over-density: (a) a partially disrupting dwarf galaxy on a low-latitude orbit, (b) a projection of the warped outer Galactic disk, and (c) a projection of an out-of-plane spiral arm. While the data provide no firm arguments against the less well-defined third scenario, they have clear implications for each of the others: (a) We infer from the strong elongation in longitude, and simulations in the literature, that the over-density is unlikely to be a gravitationally bound system at the present epoch, but may well be just a recently disrupted satellite remnant. (b) Based on modeling, the line-of-sight depth of the over-density in old stars is clearly inconsistent with published locally axi-symmetric descriptions of the warped Galactic disk.
description: 27 pages, 15 figures, Submitted to AJ. Several figures are given as JPEGs. High res. version: www.mpia-hd.mpg.de/homes/butler/cma.pdf.gz
title: Gifaumon, Potiron :
title: Principes directeurs pour la conduite de l’examen de la distinction, de l’homogénéité et de la stabilité.
titleType: Subtitle
Creators: name: International Union For The Protection Of New Varieties Of Plants,
Publisher: name: International Union for the Protection of New Varieties of Plants,
Year: 0
Subjects: Group identity.
New Varieties of Plants
Pumpkin

description: Ces principes directeurs (“principes directeurs d’examen”) visent à approfondir les principes énoncés dans l’introduction générale (document TG/1/3) et dans les documents TGP qui s’y rapportent afin de donner des indications concrètes détaillées pour l’harmonisation de l’examen de la distinction, de l’homogénéité et de la stabilité (DHS) et, en particulier, à identifier des caractères convenant à l’examen DHS et à la production de descriptions variétales harmonisées.
A Study of Factors and KALAYANAMITT Characteristics Development of Early Childhood Education Program Students
Creators: name: Jiraporn  Potjanaareewong
Publisher: name: Graduate School;Nakhon Sawan Rajabhat University
Year: 2014
Subjects: KALAYANAMITT characteristics, ISPAPA training program

description: 26, 9, SOCIAL SCIENCES RESEARCH AND ACADEMIC JOURNAL
Efficient Uncertainty Minimization for Fuzzy Spectral Clustering
Creators: name: White, Brian
name: Shalloway, David
Publisher: name: arXiv
Year: 2007
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Spectral clustering uses the global information embedded in eigenvectors of an inter-item similarity matrix to correctly identify clusters of irregular shape, an ability lacking in commonly used approaches such as k-means and agglomerative clustering. However, traditional spectral clustering partitions items into hard clusters, and the ability to instead generate fuzzy item assignments would be advantageous for the growing class of domains in which cluster overlap and uncertainty are important. Korenblum and Shalloway [Phys. Rev. E 67, 056704 (2003)] extended spectral clustering to fuzzy clustering by introducing the principle of uncertainty minimization. However, this posed a challenging non-convex global optimization problem that they solved by a brute-force technique unlikely to scale to data sets having more than O(10^2) items. Here we develop a new method for solving the minimization problem, which can handle data sets at least two orders of magnitude larger. In doing so, we elucidate the underlying structure of uncertainty minimization using multiple geometric representations. This enables us to show how fuzzy spectral clustering using uncertainty minimization is related to and generalizes clustering motivated by perturbative analysis of almost-block-diagonal matrices. Uncertainty minimization can be applied to a wide variety of existing hard spectral clustering approaches, thus transforming them to fuzzy methods.
description: Keywords: cluster analysis, clustering, spectral clustering, fuzzy clustering, pattern recognition, spectral graph theory, spectral graph partitioning, macrostates; v3 changes: geometric representations motivate 0th order solution; better scaling results because of sparse matrices; v5 changes: 19 pages, applied to asymmetric and symmetric matrices
15th World Conference on Titanium Chapter 3: Biomedical & Healthcare Applications
Creators: name: IOM3
Publisher: name: F1000 Research Limited
Year: 2024

description: Enhanced biomechanical performance of additively manufactured Ti-6Al-4V bone plates and their clinical applications



Property and Microstructure of TiTaSn Alloy for Medical Device Application



LASER POWDER BED FUSION OF A NOVEL TITANIUM ALLOY FOR MEDICAL APPLICATIONS



ADDITIVELY MANUFACTURED Ti2Mo FOR BIOMEDICAL APPLICATIONS: SURFACE ENGINEERING AND CORROSION PROPERTIES



Mechanical properties of Ti–Mo–Al shape memory alloy aged at α″ region



Heat treatment to fabricate beta-type titanium alloy rod with partially different Young's modulus for spinal fixation applications



HIGH STRENGTH, LOW-MODULUS NANOSTRUCTURED Ti 13Nb 13Zr FOR DENTAL IMPLANT APPLICATION



HIGHLY EFFICIENT CORAL PROPAGATION USING TITANIUM AND REGENERATIVE MEDICINE TECHNIQUES



Fabrication of carbon-doped TiO2 layers via Ti oxidation and evaluation of their antibacterial activity



Low Temperature Gaseous Surface Hardening of Titanium



CRYSTALLOGRAPHIC INSIGHTS INTO THE OXYGEN ORDERING IN Ti-O SYSTEM: CONSEQUENCES ON THE MECHANICAL PROPERTIES



Effect of oxygen on the microstructure and mechanical properties of α+β-type Ti–5Nb alloys for biomedical applications



Towards antibacterial implants: Influence of the microstructure on the properties of Ti-7Ag alloy



Recent development of Ti-Mo and Ti-Cr based superelastic alloys
Relation between two measures of entanglement in spin-1/2 and spinless fermion quantum chain systems
Creators: name: Qian, Xiao-Feng
name: Song, Z.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The concepts of concurrence and mode concurrence are the measures of entanglement for spin-1/2 and spinless fermion systems respectively. Based on the Jordan-Wigner transformation, any spin-1/2 system is always associated with a fermion system (called counterpart system). The comparison of concurrence and mode concurrence can be made with the aid of the Marshall's sign rule for the ground states of spin-1/2 $XXZ$ and spinless fermion chain systems. We observe that there exists an inequality between concurrence and mode concurrence for the ground states of the two corresponding systems. The spin-1/2 XY chain system and its spinless fermion counterpart as a realistic example is discussed to demonstrate the analytical results.
description: 7 pages, no figures, publication version, to appear in PRA
Can single photon excitation of two spatially separated modes lead to a violation of Bell inequality via homodyne measurements?
Creators: name: Das, Tamoghna
name: Karczewski, Marcin
name: Mandarino, Antonio
name: Markiewicz, Marcin
name: Woloncewicz, Bianka
name: Żukowski, Marek
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We reconsider the all-optical homodyne-measurement based experimental schemes that aim to reveal Bell nonclassicality of a single photon, often termed `nonlocality'. We focus on the schemes put forward by Tan, Walls and Collett (TWC, 1991) and Hardy (1994). In the light of our previous work the Tan, Walls and Collett setup can be described by a precise local hidden variable model, hence the claimed nonclassicality of this proposal is apparent, whereas the nonclassicality proof proposed by Hardy is impeccable. In this work we resolve the following problem: which feature of the Hardy's approach is crucial for its successful confirmation of nonclassicality. The scheme of Hardy differs from the Tan, Walls and Collett setup in two aspects. (i) It introduces a superposition of a single photon excitation with vacuum as the initial state of one of the input modes of a 50-50 beamsplitter, which creates the superposition state of two separable (exit) modes under investigation. (ii) In the final measurements Hardy's proposal utilises a varying strengths of the local oscillator fields, whereas in the TWC case they are constant. In fact the local oscillators in Hardy's scheme are either on or off (the local setting is specified by the presence or absence of the local auxiliary field). We show that it is the varying strength of the local oscillators, from setting to setting, which is the crucial feature enabling violation of local realism in the Hardy setup, whereas it is not necessary to use initial superposition of a single photon excitation with vacuum as the initial state of the input mode. Neither one needs to operate in the fully on/off detection scheme. Despite the failure of the Tan, Walls and Collett scheme in proving Bell nonclassicality, we show that their scheme can serve as an entanglement indicator.
description: 15 pages, 6 figures. Comments are welcome
Quark-hadron duality and truncated moments of nucleon structure functions
Creators: name: Psaker, A.
name: Melnitchouk, W.
name: Christy, M. E.
name: Keppel, C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We employ a novel new approach to study local quark-hadron duality using "truncated" moments, or integrals of structure functions over restricted regions of x, to determine the degree to which individual resonance regions are dominated by leading twist. Because truncated moments obey the same Q^2 evolution equations as the leading twist parton distributions, this approach makes possible for the first time a description of resonance region data and the phenomenon of quark-hadron duality directly from QCD.
description: 21 pages, 7 figures, to appear in Phys. Rev. C
Quick Learning Mechanism with Cross-Domain Adaptation for Intelligent Fault Diagnosis
Creators: name: Sharma, Arun K.
name: Verma, Nishchal K.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: The fault diagnostic model trained for a laboratory case machine fails to perform well on the industrial machines running under variable operating conditions. For every new operating condition of such machines, a new diagnostic model has to be trained which is a time-consuming and uneconomical process. Therefore, we propose a quick learning mechanism that can transform the existing diagnostic model into a new model suitable for industrial machines operating in different conditions. The proposed method uses the Net2Net transformation followed by a fine-tuning to cancel/minimize the maximum mean discrepancy between the new data and the previous one. The fine-tuning of the model requires a very less amount of labelled target samples and very few iterations of training. Therefore, the proposed method is capable of learning the new target data pattern quickly. The effectiveness of the proposed fault diagnosis method has been demonstrated on the Case Western Reserve University dataset, Intelligent Maintenance Systems bearing dataset, and Paderborn university dataset under the wide variations of the operating conditions. It has been validated that the diagnostic model trained on artificially damaged fault datasets can be used to quickly train another model for a real damage dataset.
description: 9 pages, 6 figures, transaction
Rethinking Eye-blink: Assessing Task Difficulty through Physiological Representation of Spontaneous Blinking
Creators: name: Cho, Youngjun
Publisher: name: arXiv
Year: 2021
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Artificial Intelligence (cs.AI)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Continuous assessment of task difficulty and mental workload is essential in improving the usability and accessibility of interactive systems. Eye tracking data has often been investigated to achieve this ability, with reports on the limited role of standard blink metrics. Here, we propose a new approach to the analysis of eye-blink responses for automated estimation of task difficulty. The core module is a time-frequency representation of eye-blink, which aims to capture the richness of information reflected on blinking. In our first study, we show that this method significantly improves the sensitivity to task difficulty. We then demonstrate how to form a framework where the represented patterns are analyzed with multi-dimensional Long Short-Term Memory recurrent neural networks for their non-linear mapping onto difficulty-related parameters. This framework outperformed other methods that used hand-engineered features. This approach works with any built-in camera, without requiring specialized devices. We conclude by discussing how Rethinking Eye-blink can benefit real-world applications.
description: [Accepted version] In Proceedings of CHI Conference on Human Factors in Computing Systems (CHI '21), May 8-13, 2021, Yokohama, Japan. ACM, New York, NY, USA. 19 Pages. https://doi.org/10.1145/3411764.3445577
Early formative subsistence and agriculture in southeastern Mesoamerica
Creators: name: Feddema, Vicki L.
Publisher: name: University of British Columbia
Year: 2008

description: This thesis addresses questions regarding the nature of subsistence strategies practiced by Early Formative inhabitants of the Mazatan area on the Pacific Coast of southeastern Mesoamerica. Previous archaeological research indicates that estuarine and riverine faunal resources provided the main basis for subsistence. Here, I propose that cultivation of indigenous food plants was also an important component in the subsistence system and was established prior to the introduction of non-local domesticated plants such as maize. The development of cultivation practices probably occurred as a gradual progression from casual to more deliberate cultivation of favored plant species. Incentives for such practices may have been related to nutrition, seasonal availability, efficiency and/or storability. Non-local domesticates may have been adopted into the existing cultivation regime for similar reasons, or for reasons related to ociopolitical complexity, which appears to have emerged around the same time. Research questions generated by this hypothesis are addressed through the analysis of carbonized plant remains that were recovered from 147 flotation samples collected from four archaeological sites in the study area. Of the seven botanical taxa that were identified, maize, beans and avocado are the most ubiquitous and indicate that the cultivation of domesticated plants was well underway by the beginning of the Early Formative period (about 3500 years ago). It is, however, difficult to assess the actual importance of these species in the subsistence economy. Because post-depositional processes and differential patterns of plant utilization and preservation influence the amount and type of plant material that will be preserved, archeobotanical remains provide, at best, an indirect reflection of plant resource utilization by ancient human populations. Statistical treatment of recovered data is therefore problematical, and inference based upon simple identification of species present in archaeological contexts is the approach used here to examine trends in taxon occurrence.
Light Propagation and Large-Scale Inhomogeneities
Creators: name: Brouzakis, Nikolaos
name: Tetradis, Nikolaos
name: Tzavara, Eleftheria
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the effect on the propagation of light of inhomogeneities with sizes of order 10 Mpc or larger. The Universe is approximated through a variation of the Swiss-cheese model. The spherical inhomogeneities are void-like, with central underdensities surrounded by compensating overdense shells. We study the propagation of light in this background, assuming that the source and the observer occupy random positions, so that each beam travels through several inhomogeneities at random angles. The distribution of luminosity distances for sources with the same redshift is asymmetric, with a peak at a value larger than the average one. The width of the distribution and the location of the maximum increase with increasing redshift and length scale of the inhomogeneities. We compute the induced dispersion and bias on cosmological parameters derived from the supernova data. They are too small to explain the perceived acceleration without dark energy, even when the length scale of the inhomogeneities is comparable to the horizon distance. Moreover, the dispersion and bias induced by gravitational lensing at the scales of galaxies or clusters of galaxies are larger by at least an order of magnitude.
description: 27 pages, 9 figures, revised version to appear in JCAP, analytical estimate included, typos corrected
Differentiation Strategy for Competitive Advantage of Ceramics OTOP in the Lower Northern Region of Thailand
Creators: name: Sarawana  Sangsuk
Publisher: name: Graduate School;Nakhon Sawan Rajabhat University
Year: 2014
Subjects: Differentiation Strategy, Competitive Advantage,Ceramics OTOP

description: 26, 9, SOCIAL SCIENCES RESEARCH AND ACADEMIC JOURNAL
Discovering features in gravitational-wave data through detector characterization, citizen science and machine learning
Creators: name: Soni, S
name: Berry, C P L
name: Coughlin, S B
name: Harandi, M
name: Jackson, C B
name: Crowston, K
name: Østerlund, C
name: Patane, O
name: Katsaggelos, A K
name: Trouille, L
name: Baranowski, V-G
name: Domainko, W F
name: Kaminski, K
name: Rodriguez, M A Lobato
name: Marciniak, U
name: Nauta, P
name: Niklasch, G
name: Rote, R R
name: Téglás, B
name: Unsworth, C
name: Zhang, C
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The observation of gravitational waves is hindered by the presence of transient noise (glitches). We study data from the third observing run of the Advanced LIGO detectors, and identify new glitch classes. Using training sets assembled by monitoring of the state of the detector, and by citizen-science volunteers, we update the Gravity Spy machine-learning algorithm for glitch classification. We find that a new glitch class linked to ground motion at the detector sites is especially prevalent, and identify two subclasses of this linked to different types of ground motion. Reclassification of data based on the updated model finds that 27 % of all transient noise at LIGO Livingston belongs to the new glitch class, making it the most frequent source of transient noise at that site. Our results demonstrate both how glitch classification can reveal potential improvements to gravitational-wave detectors, and how, given an appropriate framework, citizen-science volunteers may make discoveries in large data sets.
description: 26 pages, 10 figures
GRBs search results with the ARGO-YBJ experiment operated in Scaler Mode
Creators: name: Di Sciascio, G.
name: Di Girolamo, T.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The ARGO-YBJ experiment is almost completely installed at the YangBaJing Cosmic Ray Laboratory (4300 m a.s.l., Tibet, P.R. China). The lower energy limit of the detector (E $\sim$ 1 GeV) is reached with the scaler mode, i.e., recording the single particle rate at fixed time intervals. In this technique, due to its high altitude location and large area ($\sim$ 6700 m$^2$), this experiment is the most sensitive among all present and past ground-based detectors. In the energy range under investigation, signals due to local (e.g. solar GLEs) and cosmological (e.g. GRBs) phenomena are expected as significant enhancements of the counting rate over the background. Results on the search for GRBs in coincidence with satellite detections are presented.
description: Proc. of "The Multi-Messenger Approach To High Energy Gamma-Ray Sources" Workshop, Barcelona, July 4-7, 2006
Some Bianchi Type III String Cosmological Models with Bulk Viscosity
Creators: name: Yadav, Mahesh Kumar
name: Rai, Anju
name: Pradhan, Anirudh
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate the integrability of cosmic strings in Bianchi III space-time in presence of a bulk viscous fluid by applying a new technique. The behaviour of the model is reduced to the solution of a single second order nonlinear differential equation. We show that this equation admits an infinite family of solutions. Some physical consequences from these results are also discussed.
description: 12 pages, no figure. To appear in Int. J. Theor. Phys
Efficient uncertainty quantification for Monte Carlo dose calculations using importance (re-)weighting
Creators: name: Stammer, Pia
name: Burigo, Lucas
name: Jäkel, Oliver
name: Frank, Martin
name: Wahl, Niklas
Publisher: name: arXiv
Year: 2021
Subjects: subject: Medical Physics (physics.med-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The high precision and conformity of intensity-modulated particle therapy (IMPT) comes at the cost of susceptibility to treatment uncertainties in particle range and patient set-up. Dose uncertainty quantification and mitigation, which is usually based on sampled error scenarios, however becomes challenging when computing the dose with computationally expensive but accurate Monte Carlo (MC) simulations. This paper introduces an importance (re-)weighting method in MC history scoring to concurrently construct estimates for error scenarios, the expected dose and its variance from a single set of MC simulated particle histories. The approach relies on a multivariate Gaussian input and uncertainty model, which assigns probabilities to the initial phase space sample, enabling the use of different correlation models. Exploring and adapting bivariate emittance parametrizations for the beam shape, accuracy can be traded between that of the uncertainty or the nominal dose estimate. The method was implemented using the MC code TOPAS and tested for proton IMPT plan delivery in comparison to a reference scenario estimate. We achieve accurate results for set-up uncertainties ($γ_{3mm/3\%} \geq 99.99\%$) and expectedly lower but still sufficient agreement for range uncertainties, which are approximated with uncertainty over the energy distribution ($γ_{3 mm/3\%} \geq 99.50\%$ ($E[\boldsymbol{d}]$), $γ_{3mm/3\%} \geq 91.69\%$ ($σ(\boldsymbol{d})$) ). Initial experiments on a water phantom, a prostate and a liver case show that the re-weighting approach lowers the CPU time by more than an order of magnitude. Further, we show that uncertainty induced by interplay and other dynamic influences may be approximated using suitable error correlation models.
description: 29 pages, 8 figures, 7 tables
Uniform bounds on growth in o-minimal structures
Creators: name: Ramakrishnan, Janak
Publisher: name: arXiv
Year: 2007
Subjects: subject: Logic (math.LO)
subject: FOS: Mathematics
subject: 03C64 (Primary), 06F15 (Secondary), 26A12, 12J15

description: We prove that a function definable with parameters in an o-minimal structure is bounded away from infinity as its argument goes to infinity by a function definable without parameters, and that this new function can be chosen independently of the parameters in the original function. This generalizes a result in a paper of Friedman and Miller. Moreover, this remains true if the argument is taken to approach any element of the structure (or plus/minus infinity), and the function has limit any element of the structure (or plus/minus infinity).
description: 3 pages. To appear in Mathematical Logic Quarterly
Quantization of Calogero-Painlevé System and Multi-Particle Quantum Painlevé Equations II-VI
Creators: name: Mobasheramini, Fatane
name: Bertola, Marco
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We consider the isomonodromic formulation of the Calogero-Painlevé multi-particle systems and proceed to their canonical quantization. We then proceed to the quantum Hamiltonian reduction on a special representation to radial variables, in analogy with the classical case and also with the theory of quantum Calogero equations. This quantized version is compared to the generalization of a result of Nagoya on integral representations of certain solutions of the quantum Painlevé equations. We also provide multi-particle generalizations of these integral representations.
SDSS-IV MaNGA: Radial Gradients in Stellar Population Properties of Early-Type and Late-Type Galaxies
Creators: name: Parikh, Taniya
name: Thomas, Daniel
name: Maraston, Claudia
name: Westfall, Kyle B.
name: Andrews, Brett H.
name: Boardman, Nicholas Fraser
name: Drory, Niv
name: Oyarzun, Grecco
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We derive ages, metallicities, and individual element abundances of early- and late-type galaxies (ETGs and LTGs) out to 1.5 R$_e$. We study a large sample of 1900 galaxies spanning $8.6 - 11.3 \log M/M_{\odot}$ in stellar mass, through key absorption features in stacked spectra from the SDSS-IV/MaNGA survey. We use mock galaxy spectra with extended star formation histories to validate our method for LTGs and use corrections to convert the derived ages into luminosity- and mass-weighted quantities. We find flat age and negative metallicity gradients for ETGs and negative age and negative metallicity gradients for LTGs. Age gradients in LTGs steepen with increasing galaxy mass, from $-0.05\pm0.11~\log$ Gyr/R$_e$ for the lowest mass galaxies to $-0.82\pm0.08~\log$ Gyr/R$_e$ for the highest mass ones. This strong gradient-mass relation has a slope of $-0.70\pm0.18$. Comparing local age and metallicity gradients with the velocity dispersion $σ$ within galaxies against the global relation with $σ$ shows that internal processes regulate metallicity in ETGs but not age, and vice versa for LTGs. We further find that metallicity gradients with respect to local $σ$ show a much stronger dependence on galaxy mass than radial metallicity gradients. Both galaxy types display flat [C/Fe] and [Mg/Fe], and negative [Na/Fe] gradients, whereas only LTGs display gradients in [Ca/Fe] and [Ti/Fe]. ETGs have increasingly steep [Na/Fe] gradients with local $σ$ reaching $6.50\pm0.78$ dex/$\log$ km/s for the highest masses. [Na/Fe] ratios are correlated with metallicity for both galaxy types across the entire mass range in our sample, providing support for metallicity dependent supernova yields.
description: 21 pages, 21 figures, 4 tables + Appendix
Electrostatic internal energy using the method of images
Creators: name: Diaz, Rodolfo A.
name: Herrera, William J.
name: Niño, J. Virgilio
Publisher: name: arXiv
Year: 2006
Subjects: subject: Classical Physics (physics.class-ph)
subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: For several configurations of charges in the presence of conductors, the method of images permits us to obtain some observables associated with such a configuration by replacing the conductors with some image charges. However, simple inspection shows that the potential energy associated with both systems does not coincide. Nevertheless, it can be shown that for a system of a grounded or neutral conductor and a distribution of charges outside, the external potential energy associated with the real charge distribution embedded in the field generated by the set of image charges is twice the value of the internal potential energy associated with the original system. This assertion is valid for any size and shape of the conductor, and regardless of the configuration of images required. In addition, even in the case in which the conductor is not grounded nor neutral, it is still possible to calculate the internal potential energy of the original configuration through the method of images. These results show that the method of images could also be useful for calculations of the internal potential energy of the original system.
description: 5 pages, 3 figures. New discussions added. Minor changes
Flexibility Evaluation of Domestic Electric Water Heater Aggregates
Creators: name: Conte, F.
name: Gabriele, B.
name: Massucco, S.
name: Silvestro, F.
name: Cirio, D.
name: Croci, L.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In this paper, a method to evaluate the flexibility of aggregates of domestic electric water heaters is proposed and applied to the Italian case. Flexibility is defined as the capability of the aggregate to vary its power demand for a given time interval. The evaluation method consists of a Monte Carlo analysis, that uses the thermal model of electric water heaters and a proper elaboration of the external inputs, such as ambient and cold water temperatures, and hot water demand. The case of large aggregates defined along the Italian territory has been studied showing the dependence of flexibility on seasons and on time.
Gapped solitons and periodic excitations in strongly coupled BEC
Creators: name: Roy, Utpal
name: Shah, B.
name: Abhinav, Kumar
name: Panigrahi, P. K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: It is found that localized solitons in the strongly coupled cigar shaped Bose-Einstein condensate form two distinct classes. The one without a background is an asymptotically vanishing, localized soliton, having a wave-number, which has a lower bound in magnitude. Periodic soliton trains exist only in the presence of a background, where the localized soliton has a \textit{W}-type density profile. This soliton is well suited for trapping of neutral atoms and is found to be stable under Vakhitov-Kolokolov criterion, as well as numerical evolution. We identify an insulating phase of this system in the presence of an optical lattice. It is demonstrated that the ${\it W}$-type density profile can be precisely controlled through trap dynamics.
description: 7 pages, 2 figures
Probing CP-violating Higgs contributions in gamma-gamma -> f anti-f through fermion polarization
Creators: name: Godbole, Rohini M.
name: Kraml, Sabine
name: Rindani, Saurabh D.
name: Singh, Ritesh K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss the use of fermion polarization for studying neutral Higgs bosons at a photon collider. To this aim we construct polarization asymmetries which can isolate the contribution of a Higgs boson $ϕ$ in $γγ\to f \bar f$, $f=τ/t$, from that of the QED continuum. This can help in getting information on the $γγϕ$ coupling in case $ϕ$ is a CP eigenstate. We also construct CP-violating asymmetries which can probe CP mixing in case $ϕ$ has indeterminate CP. Furthermore, we take the MSSM with CP violation as an example to demonstrate the potential of these asymmetries in a numerical analysis. We find that these asymmetries are sensitive to the presence of a Higgs boson as well as its CP properties over a wide range of MSSM parameters. In particular, the method suggested can cover the region where a light Higgs boson may have been missed by LEP due to CP violation in the Higgs sector, and may be missed as well at the LHC.
description: 14 pages, 14 figures, typeset in revtex4. Version which has appeared in Physical Review D; typos in two references corrected
ExplorerTree: a focus+context exploration approach for 2D embeddings
Creators: name: Marcílio-Jr, Wilson E.
name: Eler, Danilo M.
name: Paulovich, Fernando V.
name: Rodrigues-Jr, José F.
name: Artero, Almir O.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Graphics (cs.GR)
subject: FOS: Computer and information sciences

description: In exploratory tasks involving high-dimensional datasets, dimensionality reduction (DR) techniques help analysts to discover patterns and other useful information. Although scatter plot representations of DR results allow for cluster identification and similarity analysis, such a visual metaphor presents problems when the number of instances of the dataset increases, resulting in cluttered visualizations. In this work, we propose a scatter plot-based multilevel approach to display DR results and address clutter-related problems when visualizing large datasets, together with the definition of a methodology to use focus+context interaction on non-hierarchical embeddings. The proposed technique, called ExplorerTree, uses a sampling selection technique on scatter plots to reduce visual clutter and guide users through exploratory tasks. We demonstrate ExplorerTree's effectiveness through a use case, where we visually explore activation images of the convolutional layers of a neural network. Finally, we also conducted a user experiment to evaluate ExplorerTree's ability to convey embedding structures using different sampling strategies.
Παράλληλος και κατανεμημένος συναρτησιακός προγραμματισμός
Creators: name: Ανδρεάδης, Ευμένιος Ανδρέα
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Παραλληλισμός
Ταυτοχρονισμός
Συναρτησιακός
Parallelism
Concurrent
Functional

description: Στην εργασία αυτή θα μελετήσουμε διάφορες συναρτησιακές γλώσσες καθώς επίσης και συναρτησιακά χαρακτηριστικά που παρέχονται από αντικειμενοστραφείς γλώσσες όπως η C++ και η Java. Θα εκμεταλλευτούμε τα διάφορα συναρτησιακά χαρακτηριστικά και τα πλεονεκτήματα που παρέχουν όσο αναφορά τον παραλληλισμό για να υλοποιήσουμε πολύ αποδοτικές λύσεις σε κλασικά προβλήματα συγχρονισμού όπως το πρόβλημα Παραγωγού-Καταναλωτή και το πρόβλημα των Γευματιζόντων Φιλοσόφων. Το συμπέρασμα είναι ότι συναρτησιακά προγράμματα είναι πολύ πιο απλά σε κώδικα και επομένως είναι πιο εύκολα κατανοητά και επεκτάσιμα για υλοποιήσεις παράλληλων προγραμμάτων.
description: The aim of the present thesis is to study various functional languages as well as functional features provided by object-oriented languages such as C ++ and Java. We will take advantage of the various functional features and the advantages that they provide regarding parallelism to implement highly efficient solutions to classic synchronization problems such as the Consumer-Producer Problem and the Dining Philosophers Problem. The conclusion is that functional programs are much simpler in code and therefore easier to understand and more scalable for parallel program implementations.