cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Hierarchical Marketing Mix Models with Sign Constraints
Creators: name: Chen, Hao
name: Zhang, Minguang
name: Han, Lanshan
name: Lim, Alvin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applications (stat.AP)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Marketing mix models (MMMs) are statistical models for measuring the effectiveness of various marketing activities such as promotion, media advertisement, etc. In this research, we propose a comprehensive marketing mix model that captures the hierarchical structure and the carryover, shape and scale effects of certain marketing activities, as well as sign restrictions on certain coefficients that are consistent with common business sense. In contrast to commonly adopted approaches in practice, which estimate parameters in a multi-stage process, the proposed approach estimates all the unknown parameters/coefficients simultaneously using a constrained maximum likelihood approach and solved with the Hamiltonian Monte Carlo algorithm. We present results on real datasets to illustrate the use of the proposed solution algorithm.
Συγκεντρώσεις πτητικών οργανικών ενώσεων στους εσωτερικούς χώρους της βόρειας Ελλάδας – εκτίμηση του κινδύνου
Creators: name: Παπαδημητρίου, Μαρία Αχιλλέα
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Πτητικές οργανικές ενώσεις
Ρύπανση εσωτερικού αέρα
Αέρια Χρωματογραφία
Volatile organic compounds
Indoor air pollution
Gas Chromatography

description: Οι πτητικές οργανικές ενώσεις (VOCs) θεωρούνται μία κατηγορία ρύπων με σημαντική παρουσία στον εσωτερικό αέρα και σοβαρές επιδράσεις στην υγεία. Τα τελευταία χρόνια, μεγάλο ενδιαφέρον παρουσιάζει η μελέτη της ποιότητας του εσωτερικού αέρα (IAQ) δεδομένου ότι οι άνθρωποι περνούν μεγάλο μέρος του χρόνου τους σε εσωτερικούς χώρους. Στόχος της παρούσας εργασίας ήταν ο προσδιορισμός των συγκεντρώσεων VOCs σε εσωτερικούς χώρους σπιτιών, αλλά και εργασιακών χώρων. Για τον σκοπό αυτό, πραγματοποιήθηκαν ταυτόχρονες δειγματοληψίες αέρα από το εσωτερικό και εξωτερικό περιβάλλον 30 σπιτιών και 10 εργασιακών χώρων της Βόρειας Ελλάδας. Στα δείγματα προσδιορίσθηκαν αρωματικές και καρβονυλικές VOCs με την τεχνική της Αέριας Χρωματογραφίας συζευγμένης με Φασματόμετρο Μάζας και μονάδα Θερμικής Εκρόφησης (TD-GC/MS). Επιπλέον, με βάση τις εσωτερικές συγκεντρώσεις, έγινε εκτίμηση του κινδύνου που συνεπάγεται η έκθεση των ανθρώπων μέσω της αναπνοής.
description: Volatile organic compounds (VOCs), as a common group of indoor air pollutants with large variety of species, continued to get worldwide attention due to their ubiquitous occurrence in indoor environments and their potentially important implications for human health. In recent years, many studies have been focused on indoor air quality (IAQ) given that people spend a major part of their daytime indoors. The aim of the present study was to determine the concentrations of aromatic VOCs in indoor environments of houses and workplaces. For this purpose, air sampling was carried out in the indoor and outdoor environment of 30 houses and 10 workplaces of northern Greece. Samples were analyzed for aromatic and carbonyl VOCs by Thermal Desorption - Gas Chromatography/Mass Spectrometry (TD-GC/MS). Moreover, the health risk due to inhalation of aromatic VOCs was assessed.
Θέσεις του Αργού Ειρμολογίου κατά τον 17ο και 18ο αιώνα
Creators: name: Παπαδόπουλος, Γεώργιος Κυριάκου
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Αργό Ειρμολόγιο
Θέσεις
Α΄ήχος
Slow Heirmologion
Music Formulas
First tone

description: Σκοπός της μεταπτυχιακής εργασίας ήταν η μελέτη των θέσεων στο αργό Ειρμολόγιο και στον Α΄ήχο. Πρώτα εξηγήσαμε τι είναι ο ειρμός, πως εξελίχθηκε και τι είναι το Ειρμολόγιο. Στη συνέχεια, εξηγήσαμε τι είναι οι θέσεις. Τέλος, εξετάσαμε τις καταβασίες της Αναστάσεως Του Κυρίου και τις καταβασίες της Κοιμήσεως της Θεοτόκου, όπως είναι τυπωμένες στο αργό Ειρμολόγιο του Πέτρου του Πελοποννησίου στην Nέα Mέθοδο γραφής. Οι Καταβασίες τίθενται σε σύγκριση με τις ίδιες Καταβασίες, με τις δεύτερες γραμμένες στην παλαιά μέθοδο γραφής όπως αποτυπώνονται στα χειρόγραφα EBE 3482, Razumovsky 131 και EBE 946. Τα χειρόγραφα EBE 3482 και Razumovsky 131 είναι από το αργό Ειρμολόγιο του Πέτρου του Πελοποννήσιου, ενώ το χειρόγραφο ΕΒΕ 946 είναι από το αργό Ειρμολόγιο του Μπαλασίου του ιερεύς.
description: The aim of the present thesis was the study of the music formulas in Argon Heirmologion and at the first tone. First, we explained what an heirmos (irmos) is, how it evolved and what Hermologion is. Then we explained what a music formula is. Finally, we examined the Katabasiai of the Resurrection of the Lord and the Katabasiai of the Dormition of the Theotokos, as they are printed in the slow Heirmologion of Petros Peloponnisios in the New Method of notation. The Katabasiai are put in comparison with the same Katabasiai, with the latter Katabasiai written in the old notation, as they are presented in EBE 3482 (EBE stands for National Library of Greece), Razumovsky 131 (Razumovsky collection of manuscripts) and EBE 946 manuscripts. The EBE 3482 and Razumovsky 131 manuscripts are from the slow Heirmologion of Petros Peloponnisios, while the ΕΒΕ 946 manuscript is from the slow Heirmologion of Balasios the priest.
The host galaxies and progenitors of Fast Radio Bursts localized with the Australian Square Kilometre Array Pathfinder
Creators: name: Bhandari, Shivani
name: Sadler, Elaine M.
name: Prochaska, J. Xavier
name: Simha, Sunil
name: Ryder, Stuart D.
name: Marnoch, Lachlan
name: Bannister, Keith W.
name: Macquart, Jean-Pierre
name: Flynn, Chris
name: Shannon, Ryan M.
name: Tejos, Nicolas
name: Corro-Guerra, Felipe
name: Day, Cherie K.
name: Deller, Adam T.
name: Ekers, Ron
name: Lopez, Sebastian
name: Mahony, Elizabeth K.
name: Nuñez, Consuelo
name: Phillips, Chris
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The Australian SKA Pathfinder (ASKAP) telescope has started to localize Fast Radio Bursts (FRBs) to arcsecond accuracy from the detection of a single pulse, allowing their host galaxies to be reliably identified. We discuss the global properties of the host galaxies of the first four FRBs localized by ASKAP, which lie in the redshift range $0.11
description: 15 pages, 5 figures, 5 tables. Accepted for publication in ApJL
Distal alteration in the carbonate-hosted replacement and skarn systems at Yauricocha, central Peru
Creators: name: Carrasco, Julio Jurado
Publisher: name: University of British Columbia
Year: 2010

description: Despite numerous reviews of carbonate-replacement (CRD) and skarn deposits, there have been few exhaustive studies into the details of distal alteration features lateral and above to the mineralized centres at these deposits. These features record the passage of exhausted hydrothermal fluids and provide important guides for mineral exploration. Yauricocha, central Peru, is a Zn-Pb-Cu-Ag magmatic-hydrothermal system zoned around a late Miocene quartz monzonite-quartz diorite stock, which intruded limestone and marl of the Cretaceous Jumasha and Santonian Celendin formations. Northwesterly-trending folds controlled the emplacement of the stock, sulfide carbonate-replacement deposits at Mina Central, skarn deposits at Cachi Cachi, and ’Carlin-style’ Au mineralization at Purisima Concepcicin. Low-grade porphyry-Cu, Au, and Ag-Cu-base metal veins lie within the stock. CRD and skarn are fringed by a visible zonal arrangement of bleached and grey marble, dolomite, calsilicates-, orange brown- to white carbonates-, and Mn-oxides minerals, quartz and sulfide veins, and local jasperoid. Thermal aureole surrounding the intrusion contains an inner zone of bleached marble and an outer zone of grey marble. Cryptic geochemical halos are defined by trace element abundance and oxygen and carbon isotope composition. In Mina Central and Cachi Cachi, visible and cryptic alteration sequences extend up to 800m laterally from intrusive contact into Jumasha and Celendin formations, and over a similar vertical distance in proximity to the ores zones. At Mina Central, visible alteration is mainly structural controlled. Garnet skarns occur locally associated with quartz diorite sills. Bleached versus gray marble units extend up to 430m from intrusive contact. Mn-carbonate veinlets, decreasing in abundance with distance, are present in marbles and limestone, and are spatially associated with sulfide orebodies. At Cachi Cachi, alteration consists of andradite-grossular skarn, surrounded by bleached and grey marble. Pervasive bleaching characterizes rocks within 150m of the intrusive contact, while narrow bedding controlled zones of bleaching extend up to 450m away. Calcsilicate and carbonate vein networks are developed adjacent to ores, and decrease in abundance with distance away from intrusion. Visible and cryptic alteration halos can be used as a model to explore carbonate-hosted replacement and skarn orebodies in other areas with geological features similar to Yauricocha.
A census of baryons in the Universe from localized fast radio bursts
Creators: name: Macquart, J. -P.
name: Prochaska, J. X.
name: McQuinn, M.
name: Bannister, K. W.
name: Bhandari, S.
name: Day, C. K.
name: Deller, A. T.
name: Ekers, R. D.
name: James, C. W.
name: Marnoch, L.
name: Oslowski, S.
name: Phillips, C.
name: Ryder, S. R.
name: Scott, D. R.
name: Shannon, R. M.
name: Tejos, N.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: More than three quarters of the baryonic content of the Universe resides in a highly diffuse state that is difficult to observe, with only a small fraction directly observed in galaxies and galaxy clusters. Censuses of the nearby Universe have used absorption line spectroscopy to observe these invisible baryons, but these measurements rely on large and uncertain corrections and are insensitive to the majority of the volume, and likely mass. Specifically, quasar spectroscopy is sensitive either to only the very trace amounts of Hydrogen that exists in the atomic state, or highly ionized and enriched gas in denser regions near galaxies. Sunyaev-Zel'dovich analyses provide evidence of some of the gas in filamentary structures and studies of X-ray emission are most sensitive to gas near galaxy clusters. Here we report the direct measurement of the baryon content of the Universe using the dispersion of a sample of localized fast radio bursts (FRBs), thus utilizing an effect that measures the electron column density along each sight line and accounts for every ionised baryon. We augment the sample of published arcsecond-localized FRBs with a further four new localizations to host galaxies which have measured redshifts of 0.291, 0.118, 0.378 and 0.522, completing a sample sufficiently large to account for dispersion variations along the line of sight and in the host galaxy environment to derive a cosmic baryon density of $Ω_{b} = 0.051_{-0.025}^{+0.021} \, h_{70}^{-1}$ (95% confidence). This independent measurement is consistent with Cosmic Microwave Background and Big Bang Nucleosynthesis values.
description: Published online in Nature 27 May, 2020
D=4, N=2 Supergravity with Abelian electric and magnetic charges
Creators: name: Sommovigo, Luca
name: Vaulá, Silvia
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss the relation between standard N=2 supergravity with translational gauging and N=2 supergravities with scalar-tensor multiplets with massive tensors and Abelian electric charges. We point out that a symplectic covariant formulation of N=2 supergravity can be achieved just in the presence of tensor multiplets. As a consequence one can see that the formulation of the N=2 theory as it comes from IIB flux compactification, which is included in these models, is equivalent to a non perturbative phase of standard N=2 supergravity. It is also shown that the IIB tadpole cancellation condition is imposed by supersymmetry in four dimensions.
description: 10 pages LaTex, no figures
Σχέσεις Εξωτερικού και Βυζαντινού Μέλους – Επηρεασμοί - από τα μέσα του 15ου αιώνα μέχρι τα τέλη του 18ου - Η περίπτωση του Δανιήλ Πρωτοψάλτη
Creators: name: Παπαϊωάννου, Αβραάμ Χαράλαμπου
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Βυζαντινή Μουσική
Εξωτερικό Μέλος
Δανιήλ Πρωτοψάλτης
Byzantine Music
Music of Ottoman Court
Daniel Protopsaltis

description: Στην παρούσα εργασία γίνεται μία προσπάθεια προσσέγγισης της σχέσης και αλληλεπίδρασης του βυζαντινού μέλους με την λεγόμενη «εξωτερική μουσική», ειδικά την περίοδο μετά την άλωση της Κων/πόλεως έως και τα τέλη του 18ου αιώνα. Πιο αναλυτικά γίνεται αρχικά μία ιστορική περιγραφή της πορείας τόσο της βυζαντινής μουσικής στα χρόνια μετά την άλωση, όσο και της «εξωτερικής»μουσικής, λαμβάνοντας υπόψιν τις κοινωνικοπολιτικές συνθήκες οι οποίες επέτρεψαν την εξέλιξη αλλά και την αλληλεπίδραση των δύο αυτών μουσικών πολιτισμών. Κατόπιν εκθέτονται τα βασικά τους χαρακτηριστικά και δει αυτά που παρουσιάζουν συγγένεια όπως είναι οι ήχοι και τα μακάμ, οι δεσπόζοντες φθόγγοι, οι μουσικές έλξεις, οι εντελείς, οι ατελείς και τελικές καταλήξεις κά. αναζητώντας ομοιότητες και διαφορές. Ακολουθεί η εξέταση της σχέση των δύο μουσικών παραδόσεων μέσα από την περίπτωση του Δανιήλ Πρωτοψάλτη. Ο τελευταίος υπήρξε ένας από τους πρωτεργάτες της χρήσης στοιχείων της «εξωτερικής» μουσικής στις συνθέσεις του, σε βαθμό μάλιστα που κατηγορήθηκε γι αυτή του την στάση. Στην εργασία ακολουθεί τροπική ανάλυση των «Αινείται» των Κυριακών του Δανιήλ, με σκοπό να εντοπιστούν πιθανόν επηρεασμοί, ενώ στο τέλος παρατίθενται τα συμπεράσματα τα οποία τήνουν προς αυτόν τον επηρεασμό και την αλληλεπίδραση.
description: In this paper, an attempt is made to approach the relationship and interaction of the Byzantine member with the so-called "external music", especially in the period after the fall of Kon/polis until the end of the 18th century. In more detail, a historical description of the course of both Byzantine music in the years after the conquest, as well as "external" music, is given, taking into account the socio-political conditions that allowed the development and interaction of these two musical cultures. Then their basic characteristics are exposed and those that show kinship such as sounds and makams, dominant phthongs, musical influences, perfectives, imperfectives and final endings, etc. looking for similarities and differences. Next is the examination of the relationship between the two musical traditions through the case of Daniil Protopsaltis. The latter was one of the pioneers of using elements of "external" music in his compositions, to the extent that he was accused of this attitude. In work follows modal analysis of the "Ainitaia" of the Sundays of Daniel, with the aim of identifying possible influences, while at the end the conclusions are listed which point to this influence and interaction.
Phase behavior and interfacial properties of nonadditive mixtures of Onsager rods
Creators: name: Shundyak, K.
name: van Roij, R.
name: van der Schoot, P.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Within a second virial theory, we study bulk phase diagrams as well as the free planar isotropic-nematic interface of binary mixtures of nonadditive thin and thick hard rods. For species of the same type the excluded volume is determined only by the dimensions of the particles, whereas for dissimilar ones it is taken to be larger or smaller than that, giving rise to a nonadditivity that can be positive or negative. We argue that such a nonadditivity can result from modelling of soft interactions as effective hard-core interactions. The nonadditivity enhances or reduces the fractionation at isotropic-nematic ($IN$) coexistence and may induce or suppress a demixing of the high-density nematic phase into two nematic phases of different composition ($N_1$ and $N_2$), depending on whether the nonadditivity is positive or negative. The interfacial tension between co-existing isotropic and nematic phases show an increase with increasing fractionation at the $IN$ interface, and complete wetting of the $IN_2$ interface by the $N_1$ phase upon approach of the triple point coexistence. In all explored cases bulk and interfacial properties of the nonadditive mixtures exhibit a striking and quite unexpected similarity with the properties of additive mixtures of different diameter ratio.
description: 12 pages, revised version, submitted to JCP
Scalar--Field Amplitudes in Black--Hole Evaporation
Creators: name: Farley, A. N. St. J.
name: D'Eath, P. D.
Publisher: name: arXiv
Year: 2004
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the quantum-mechanical decay of a Schwarzschild-like black hole into almost-flat space and weak radiation at a very late time, evaluating quantum amplitudes (not just probabilities) for transitions from initial to final states. No information is lost. The model contains gravity and a massless scalar field. The quantum amplitude to go from given initial to final bosonic data in a slightly complexified time-interval $T=τ{\exp}(-iθ)$ at infinity is approximately $\exp(-I)$, where $I$ is the (complex) Euclidean action of the classical solution filling in between the boundary data. And in a locally supersymmetric (supergravity) theory, the amplitude const. exp(-I) is exact. Dirichlet boundary data for gravity and the scalar field are posed on an initial spacelike hypersurface extending to spatial infinity, just prior to collapse, and on a corresponding final spacelike surface, sufficiently far to the future of the initial surface to catch all the Hawking radiation. In an averaged sense this radiation has an approximately spherically-symmetric distribution. If the time-interval $T$ were exactly real, the resulting `hyperbolic Dirichlet boundary-value problem' would not be well posed. If instead (`Euclidean strategy'), one takes $T$ complex, as above ($0
description: Submitted to Physics Letters B, Friday 23rd July 2004
title: TEM as a tool for bulk metallic : glass characterization: an investigation into the Pt-Cu-P System
Creators: name: Wessely, Viktor
Publisher: name: TU Wien
Year: 2018
Subjects: subject: Metallische Gläser
subject: TEM
subject: Flash DSC
subject: Bulk metallic glasses
subject: TEM
subject: Glass DSC

description: In der Arbeit werden Struktur und Stabilität von Bulk Metallic Glasses auf Basis Pt-Cu-P untersucht, und es werden Präparationstechniken erarbeitet, vor allem für die Charakterisierung mittels Transmissionselektronenmikroskopie
description: In this work the structure and stability of bulk metallic glasses based on Pt-Cu-P are investigated. Für charaterization by TEM, preparation techniques are elaborated.
title: 01_1174
Creators: name: Wesley Baldwin, John
name: Baldwin, John W.
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2018
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: L'ensemble de ces notes ont été crée par John Baldwin lors d'une de ses premières périodes de résidence à Paris. Ces documents comprennent tous les magistri qu’il avait pu rencontrer dans ses sources. Aux XIIème et XIIIème siècles, les universités n'existant pas encore, le titre de magister s'il évoque certainement une compétence n'est pas rattaché de façon systématique au passage par les écoles. De surcroît, les magistris sont le plus souvent désignés par leur seul prénom. La lecture de ces données est donc difficile et suppose un long travail pour tenter d'identifier un individu auquel on pourrait rattacher plusieurs mentions. John Baldwin avait donc renoncé à utiliser ces données pour donner un prolongement à sa magnifique étude sur les gradués d'université et leur emploi par les Capétiens et les Plantagenêts. Néanmoins, il a conservé ces données et elles sont potentiellement très utile dans le cadre de Studium, comme le sont toutes les mentions dans les volumes des Fasti Ecclesiae Gallicanae de chanoines portant ce titre de magister sans autres précisions. L'ampleur des dépouillements rend ces données très utiles et nous devons une grande reconnaissance à John Baldwin pour avoir pris la peine de faire photocopier ses fiches et de nous les avoir transmises amicalement.
Les données ainsi que les images des fiches sont accessibles sur le site Internet à l'adresse suivante : http://studium-baldwin.lamop.fr/.
Les transcriptions des fiches ont été effectuées par des étudiants de Paris 1 Panthéon - Sorbonne mais elles n'ont pas été corrigées par la suite.
description: Relation: https://lamop.hypotheses.org/
A deep Chandra observation of the Groth Strip. I. The X-ray data
Creators: name: Nandra, K.
name: Laird, E. S.
name: Adelberger, K.
name: Gardner, J. P.
name: Mushotzky, R. F.
name: Rhodes, J.
name: Steidel, C. C.
name: Teplitz, H. I.
name: Arnaud, K. A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the results of a 200 ks Chandra observation of part of the Groth Strip region, using the ACIS-I instrument. We present a relatively simple method for the detection of point-sources and calculation of limiting sensitivities, which we argue is at least as sensitive and more self-consistent than previous methods presented in the literature. 158 distinct X-ray sources are included in our point-source catalogue in the ACIS-I area. The number counts show a relative dearth of X-ray sources in this region. For example at a flux limit of 1E-15 (cgs) around 20 per cent more soft band sources are detected in the HDF-N and almost 50 per cent more in the ELAIS-N1 field, which we have analysed by the same method for comparison. We find, however, that these differences are consistent with Poisson variations at 2 sigma significance, and therefore there is no evidence for cosmic variance based on these number counts alone. We determine the average spectra of the objects and find a marked difference between the soft-band selected sources, which have Gamma=1.9 typical of unobscured AGN, and the hard-band selected sources, which have Gamma=1.0. Reassuringly, the sample as a whole has a mean spectrum of Gamma=1.4\pm 0.1, the same as the X-ray background. Nonetheless, our results imply that the fraction of sources with significant obscuration is only ~25 per cent, much less than predicted by standard AGN population synthesis models. This is confirmed by direct spectral fitting, with only a handful of objects showing evidence for absorption. After accounting for absorption, all objects are consistent with mean intrinsic spectrum of Gamma=1.76 \pm 0.08, very similar to local Seyferts (abridged).
description: 17 pages, 4 figures, MNRAS, in press
Stability in the higher derivative Abelian gauge field theory
Creators: name: Dai, Jialiang
Publisher: name: arXiv
Year: 2020
Subjects: subject: Classical Physics (physics.class-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We present the derivation of conserved tensors associated to higher-order symmetries in the higher derivative Maxwell Abelian gauge field theories. In our model, the wave operator of the higher derived theory is a $n$-th order polynomial expressed in terms of the usual Maxwell operator. Any symmetry of the primary wave operator gives rise to a collection of independent higher-order symmetries of the field equations which thus leads to a series of independent conserved quantities of derived system. In particular, by the extension of Noether's theorem, the spacetime translation invariance of the Maxwell primary operator results in the series of conserved second-rank tensors which includes the standard canonical energy-momentum tensors. Although this canonical energy is unbounded from below, by introducing a set of parameters, the other conserved tensors in the series can be bounded which ensure the stability of the higher derivative dynamics. In addition, with the aid of auxiliary fields, we successfully obtain the relations between the roots decomposition of characteristic polynomial of the wave operator and the conserved energy-momentum tensors within the context of another equivalent lower-order representation. Under the certain conditions, the 00-component of the linear combination of these conserved quantities is bounded and by this reason, the original derived theory is considered stable. Finally, as an instructive example, we discuss the third-order derived system and analyze extensively the stabilities in different cases of roots decomposition.
title: Mail à Christian Perronne, retransféré à Joseph Saba
Creators: name: Leibowitch, Jacques
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020

description: Source: http://www.calames.abes.fr/pub/ms/Calames-2019311113191710
description: created: start=2010-12-23;end=2010-12-27
Research on the antiviral and antibacterial properties of copper.docx
Creators: name: Ross, Andrea
Publisher: name: figshare
Year: 2020
Subjects: subject: 60501 Bacteriology
subject: FOS: Biological sciences
subject: 100703 Nanobiotechnology
subject: FOS: Nanotechnology
subject: 100708 Nanomaterials
subject: 100709 Nanomedicine

description: Copper has been identified for its antimicrobial properties, killing bacteria, viruses, and yeast when in contact. Scientific evidence gathered shows that the use of copper on surfaces reduces significantly the number of bacteria in the surrounding environment. This paper reviewed the importance of copper on living organisms, applications through history revealing antimicrobial properties, as well as possible applications in the medical field.
Detecting noncredible performance with the neuropsychological assessment battery, screening module: A simulation study
Creators: name: Lace, John W.
name: Grant, Alex F.
name: Ruppert, Phillip
name: Kaufman, David A. S.
name: Teague, Carson L.
name: Lowell, Kimberly
name: Gfeller, Jeffrey D.
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: While the Neuropsychological Assessment Battery, Screening Module (S-NAB) is a commonly used cognitive screening measure, no composite embedded performance validity test (PVT) formula has yet been described within it. This study sought to empirically derive PVT formulas within the S-NAB using an analog simulation paradigm. Seventy-two university students (M age = 18.92) were randomly assigned to either an Asymptomatic (AS) or simulated mild traumatic brain injury (S-mTBI) group and were administered a neuropsychological test battery that included the S-NAB and standalone and embedded PVTs. The AS group was instructed to perform optimally, and the S-mTBI group received symptom and test coaching to help simulate mTBI-related impairment. Both groups received warnings regarding the presence of PVTs throughout the test battery. Groups showed significant differences (all ps ds = 2.02 and 1.79, respectively). Seven raw scores from S-ATT and S-EXE subtests were entered as predictor variables in a direct logistic regression (LR). The model accurately classified 90.3% of cases. Two PVT formulas were described: (1) an exponentiated equation from LR results and (2) an arithmetic formula using four individually meaningful variables. Both formulas demonstrated outstanding discriminability between groups (AUCs = .96–.97) and yielded good classification statistics compared to other PVTs. This study is the first to describe composite, embedded PVT formulas within the S-NAB. Implications, limitations, and appropriate future directions of inquiry are discussed.
title: A computational model of the ribbon synapse in bipolar retinal cells
Creators: name: Bordeus, Maria Ioana
Publisher: name: TU Wien
Year: 2018
Subjects: subject: ribbon synapse
subject: simulation
subject: bipolar cell
subject: retina

description: The bipolar cells, horizontal and amacrine cells communicate with the ganglion cells via synaptic contacts. Bipolar cells, along with amacrine and horizontal cells, have the role to control the detection of light by graded impulse responses of glutamate which are released by the photoreceptors. The ganglion cells are depolarized by synaptic glutamatergic release from bipolar cells. The synaptic transmission depends on the level of intracellular calcium concentration in the bipolar cells. In this thesis, the influence of the membrane potential over the calcium channel dynamics and calcium current was simulated and analyzed. Calcium ion flux changes its direction from inside to outside of the cell in regions where the voltage membrane exceeds the equilibrium potential of calcium. A computational study was performed in order to get a better insight of the roll of the bipolar cell in the transduced signal. Furthermore, it was aimed to investigate the intracellular calcium concentration in the bipolar cell terminals using voltage clamp or space clamp technique. The intracellular calcium concentration has the main role in triggering neurotransmitter release and in this purpose it is analyzed how it changes during a stimulus of different wave-forms, with different amplitudes and time duration. In the last section, the impact of different intracellular calcium concentrations on the vesicle release was investigated. The discrete synaptic vesicle release is simulated with a four pool model and it doesn't include any endocytosis mechanism because the simulations were performed on short terms. In this study, L-type voltage-gated calcium channels was used to explain calcium current in type 9 ON bipolar cell in the rat retina. The results of this thesis may give an insight on how various computer simulations could resemble physiologic process in retinal bipolar cells. In this scope, the influence of sinusoidal stimuli of different frequencies (from 20 Hz to 5 kHz) and amplitudes (30 μA to 50 μA) or by using repetitive rectangular pulses was investigated.
EXAMINATION OF EMPIRICAL RELATIONSHIPS BETWEEN INDUSTRIAL ACTIVITIES AND AGRICULTURAL POLICY OUTPUTS IN NIGERIA (1970-2012)
Creators: name: Akpan, Sunday Brownson
name: Udoka, Samuel James
name: Okon, Uwemedimo Eyo
name: Akpan, Sunday Brownson
name: Udoka, Samuel James
name: Okon, Uwemedimo Eyo
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agricultural and Food Policy
subject: Political Economy
subject: Productivity Analysis
subject: Agriculture
subject: policy
subject: industry
subject: linkage
subject: impact
subject: Nigeria

description: The study investigated relationships between agricultural policy output (proxy by the agricultural productivity index, agricultural GDP/total GDP and crop productivity index) and output of industrial sector (proxy by the industrial capacity utilization rate) from 1970 to 2012 period in Nigeria. The study employed time series variables obtained from the Central Bank of Nigeria (CBN), National Bureau of Statistics and Food and Agricultural Organization (FAO). Augmented Dickey-Fuller unit root test was conducted on the specified time series, and the result showed that all non-growth rate series were integrated of order one, while growth rate series were stationary at level. The two-step Engle Granger method was employed to test for the presence of co-integration among specified variables. The result revealed that variables were not co-integrated. To avoid spurious regression, the specified models for non-growth rate series were estimated at first difference of the log variables. The empirical result revealed that, the industrial activities Granger cause crop activities in Nigeria. Also, the industrial activity has insignificant relationship with agricultural productivity indices in Nigeria. The same result was also obtained for industrial activities and agricultural GDP/total GDP. However, the result further revealed that, the industrial activity has significant negative correlation with the crop productivity index in Nigeria. These imply that, agricultural production had not played significant role in industrial development in Nigeria. This result suggests that, there is no significant impact of the backward integration policy of the agricultural sector on industrial sector in Nigeria. In addition, the result revealed that, agricultural policies during liberalization era (1986 - 2012) shifted the coefficient of the industrial activities positively. Therefore, it is recommended that the agricultural production in Nigeria should be boosted so as to generate sufficient demand and raw materials for the industrial sector. Agricultural policy of the liberalization period should be promoted as an alternative way to bring on positive growth in industrial activities and hence economic development in Nigeria.
New Zealand's Place in the World: The Implications of COVID-19
Creators: name: Allen, John
name: Gluckman, Peter
name: Bardsley, Anne
name: Sridhar, Hema
Publisher: name: The University of Auckland
Year: 2020
Subjects: subject: 160608 New Zealand Government and Politics
subject: FOS: Political science
subject: 160699 Political Science not elsewhere classified
subject: 160607 International Relations

description: The third discussion paper in Koi Tū’s The Future is Now Conversations Series, titled New Zealand’s place in the world: the implications of COVID-19, discusses how New Zealand can leverage its high international standing and hopefully COVID-19-free status for economic and diplomatic advantage. The insights from this paper have been informed by two focus groups comprising experts in domestic and international trade, diplomacy, and strategy.
Questionnaires for "Recreational hunting as an ecosystem service of restoration in the Bay-Delta watershed"
Creators: name: Matzek, Virginia
name: Lupi, Frank
Publisher: name: Zenodo
Year: 2021
Subjects: recreation
ecosystem services
hunting
northern California
San Francisco Bay Area
habitat restoration
riparian zones
tidal marsh
waterfowl
upland gamebirds
economic valuation
deer

description: These survey instruments were used from 2019-2021 in conjunction with the Delta Stewardship Council funded project "Recreational hunting as an ecosystem service of restoration in the Bay-Delta watershed" (Agreement #18211). "Intercept" questionnaires were administered in-person at hunt sites in northern California during waterfowl, deer, and upland gamebird seasons in 2019-20 for use in a travel-cost analysis. "Followup" questionnaires were administered online in winter-spring 2020-21 to interceptees as well as previously uncontacted northern California hunters for use in analyzing stakeholder needs in the watershed and to look at tradeoffs among site attributes via a discrete-choice experiment.
description: Funding acknowledgement: Delta Stewardship Council, California, USA Agreement #18211
Reachability as a Unifying Framework for Computing Helicopter Safe Operating Conditions and Autonomous Emergency Landing
Creators: name: Kirchner, Matthew R.
name: Ball, Eddie
name: Hoffler, Jacques
name: Gaublomme, Don
Publisher: name: arXiv
Year: 2020
Subjects: subject: Robotics (cs.RO)
subject: Systems and Control (eess.SY)
subject: Optimization and Control (math.OC)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Mathematics

description: We present a numeric method to compute the safe operating flight conditions for a helicopter such that we can ensure a safe landing in the event of a partial or total engine failure. The unsafe operating region is the complement of the backwards reachable tube, which can be found as the sub-zero level set of the viscosity solution of a Hamilton-Jacobi (HJ) equation. Traditionally, numerical methods used to solve the HJ equation rely on a discrete grid of the solution space and exhibit exponential scaling with dimension, which is problematic for the high-fidelity dynamics models required for accurate helicopter modeling. We avoid the use of spatial grids by formulating a trajectory optimization problem, where the solution at each initial condition can be computed in a computationally efficient manner. The proposed method is shown to compute an autonomous landing trajectory from any operating condition, even in non-cruise flight conditions.
description: Accepted for publication in the proceedings of the 2020 IFAC World Congress
PROFIT EFFICIENCY IN BROILER PRODUCTION: EVIDENCE FROM GREATER ACCRA REGION OF GHANA
Creators: name: Tuffour, Michael
name: Oppong, Boahen Atta
name: Tuffour, Michael
name: Oppong, Boahen Atta
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Production Economics
subject: Productivity Analysis
subject: Broiler
subject: efficiency
subject: competitiveness
subject: Ghana

description: The study examines profit efficiency and its determinants in broiler production in the context of profit maximization as an incentive for optimum production. The study uses the stochastic frontier approach with the application of the Cobb – Douglas profit function. A cross sectional data was obtained from one hundred poultry producers in Greater Accra Region using a multistage sampling method. The results of the study indicated that price of labor significantly reduced profit but the price of day old chick increased profit. The result further revealed that broiler producers were able to realize 54% of their frontier profit on the average. Number of years of experience in broiler production was found to reduce inefficiency whilst farms owned by sole proprietors were less economically efficient. The study recommends that the inputs should be made available to farmers at competitive prices and the quantity of labor use should be declined because the current level is uncompetitive. Training should also be provided to less experienced farmers to enable them adopt the best poultry farming practices.
IDENTIFYING SOURCES OF EFFICIENCY AMONG RESOURCE POOR INDIGENOUS VEGETABLE FARMERS IN UYO, NIGERIA
Creators: name: Etim, Nsikak-Abasi A.
name: Udoh, Edet J.
name: Etim, Nsikak-Abasi A.
name: Udoh, Edet J.
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agribusiness
subject: Crop Production/Industries
subject: Productivity Analysis
subject: Sources
subject: efficiency
subject: indigenous
subject: waterleaf
subject: Nigeria.

description: Indigenous vegetables have historically played an important role in farming and consumption systems in Nigeria. Vegetable production like any other farming activity requires the use of inputs as efficiently as possible to optimize production. To identify the sources of efficiency among indigenous vegetable farmers, the stochastic frontier production function which incorporates a model for the technical efficiency effect was employed. Data from 100 indigenous vegetable (waterleaf) producers were obtained through two-stage sampling procedure with the aid of questionnaire. Using the maximum likelihood estimation analysis, asymptotic parameter estimates were evaluated to describe efficiency sources. Results revealed that the average resource use efficiency is 0.81 (81%) leaving an inefficiency gap of 0.19 (19%), indicating that about 19% higher production could be achieved using the same input mix. Land, labour, waterleaf cuttings were evaluated and identified as the most critical efficiency sources. Age, access to credit facilities, and market were identified as the most important explainers of inefficiency. To derive the benefits of economies of scale, indigenous waterleaf producers should increase their farm sizes devoted to waterleaf cultivation either by land consolidation or acquiring new farm plots.
Measure concentration for Euclidean distance in the case of dependent random variables
Creators: name: Marton, Katalin
Publisher: name: arXiv
Year: 2004
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60K35, 82C22 (Primary)

description: Let q^n be a continuous density function in n-dimensional Euclidean space. We think of q^n as the density function of some random sequence X^n with values in \BbbR^n. For I\subset[1,n], let X_I denote the collection of coordinates X_i, i\in I, and let \bar X_I denote the collection of coordinates X_i, i\notin I. We denote by Q_I(x_I|\bar x_I) the joint conditional density function of X_I, given \bar X_I. We prove measure concentration for q^n in the case when, for an appropriate class of sets I, (i) the conditional densities Q_I(x_I|\bar x_I), as functions of x_I, uniformly satisfy a logarithmic Sobolev inequality and (ii) these conditional densities also satisfy a contractivity condition related to Dobrushin and Shlosman's strong mixing condition.
description: Published by the Institute of Mathematical Statistics (http://www.imstat.org) in the Annals of Probability (http://www.imstat.org/aop/) at http://dx.doi.org/10.1214/009117904000000702
THE IMPACT OF INTERNATIONAL OIL PRICE INCREASE ON THE ECONOMY OF FREE STATE PROVINCE OF SOUTH AFRICA
Creators: name: Bahta, Yonas Tesfamariam
name: Bahta, Yonas Tesfamariam
Publisher: name: Unknown
Year: 2014
Subjects: Agricultural and Food Policy
International Relations/Trade

description: This article researches quantitatively the impact of an increase in the international oil price on economy of the Free State provincial economy using a Computable General Equilibrium model. The result of an increase international oil price shows that, the percentage in labour demand of transport, other services, agriculture, and manufacturing sector decrease. The GDP of the overall economy decrease by 0.01%, the highest decrease observed in transport sector followed by other services, agriculture and manufacturing sector. It also reflects that from the household income analysis the lower income households are more affected compared to the rest of household categories.Considering poverty (measured in terms of Equivalent Variation) the results also suggest that the lowest welfare gain observed in poor households. The results suggest that it is inevitable that there will always be some external shocks outside the control of economic policies. Hence it is necessary to strengthen the effectiveness of economic growth by incorporating target available resources and ensuring coherence in policy design.
WroNG -- Wroclaw Neutrino Generator of events for single pion production
Creators: name: Sobczyk, Jan T.
name: Nowak, Jaroslaw A.
name: Graczyk, Krzysztof M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We constructed a new Monte Carlo generator of events for neutrino CC single pion production on free nucleon targets. The code uses dynamical models of the DIS with the PDFs modified according to the recent JLab data and of the Delta excitation. A comparison with experimental data was done in three channels for the total cross sections and for the distributions of events in invariant hadronic mass.
description: 6 pages, 13 figures, Presented by J.T. Sobczyk at the 3rd International Workshop on Neutrino-Nucleus Interactions in the Few-GeV Region, 17-21 March, Gran Sasso(Italy),to appear in the Proceedings
Carbon sequestration in chrysotile mine tailings
Creators: name: Wilson, Sean Alexander (Sasha)
Publisher: name: University of British Columbia
Year: 2010

description: Active sequestration of atmospheric carbon dioxide (CO₂) is occurring in chrysotile mine tailings at Clinton Creek, Yukon and Cassiar, British Columbia. Hydrated magnesium carbonate minerals develop in mine tailings as a natural consequence of the weathering process within the residues. Magnesium, leached from silicate minerals, reacts with dissolved CO₂ and bicarbonate in rainwater, precipitating carbonates at the surface of tailings upon evaporation of pore fluids and in near-surface environments with possible mediation by photosynthetic microbes. Increased reaction rates are observed in the tailings environment due to fine grain size resulting from mineral processing. Mine tailings may therefore represent the optimal environment in which to pursue mineral sequestration. Stable carbon and oxygen isotopes and radiogenic carbon are used to confirm an atmospheric source for CO₂ in recently-precipitated carbonate efflorescences in mine tailings. X-ray powder-diffraction studies demonstrate that CO₂ is crystallographically bound within the hydrated magnesium carbonate minerals nesquehonite [MgCO₃∙H₂O], dypingite [Mg₅(CO₃)₄(OH)₂∙5H₂O], hydromagnesite [Mg₅(CO₃)₄(OH)₂∙4H₂O], and lansfordite [MgCO₃∙5H₂O]. Quantitative phase analysis with the Rietveld method for X - ray powder-diffraction is used to determine the modal abundance of hydrated magnesium carbonates in mine tailings. Isotopic-fingerprinting and the Rietveld method are an effective verification protocol for carbon sequestration in mine tailings.
title: Wohn:Kultur : ein Hybrid in der Wiener Donau City
Creators: name: Friedl, Martin
Publisher: name: TU Wien
Year: 2018
Subjects: subject: Wohnbau
subject: Donau City
subject: housing
subject: Danube City

description: Die Stadt Wien sieht sich mit einem rasanten Bevölkerungswachstum konfrontiert: Laut Prognose wird die Stadt im Jahr 2026 zwei Millionen Einwohner haben, was einem jährlichen Zuwachs von etwa 15.000 Menschen entspricht. Der größte Zuwachs wird in der Donaustadt, dem 22. Wiener Gemeindebezirk, erwartet. Hier befindet sich mit der Donau City ein vergleichsweise neuer Stadtteil, dem es jedoch seit jeher an kulturellen Angeboten fehlt: Von den ursprünglich geplanten und versprochenen 8-10% der Fläche, die für Kultur‐ und Freizeiteinrichtungen genutzt werden sollten, ist bis heute kaum etwas umgesetzt. Alle Ansätze, diese Situation zu verbessern, blieben in der Vergangenheit erfolglos, obwohl schon seit einigen Jahren ein etwa 10.000m² großer Bauplatz in attraktiver Lage als „Kulturfläche“ für genau solche Nutzungen reserviert ist. Ziel dieser Diplomarbeit ist es, auf ebendieser ungenutzten Fläche ein Hybridgebäude zu entwerfen, das sowohl Wohn- als auch Kulturnutzung kombiniert, einen Mehrwert für den ganzen Stadtteil darstellt und durch seine programmatische Dichte dem Problem des steigenden Platzbedarfs in einer begrenzten Stadtfläche entgegenwirkt.
description: The city of Vienna is confronted with a rapid population growth: According to prognosis the city will have two million inhabitants by 2026, which corresponds to a yearly growth of 15.000 people. The biggest part of this increase will take place in the Donaustadt, the 22nd district of Vienna. The Donau City is a relatively new urban area within the 22nd district, which lacks significant cultural use. Though it was originally promised that 8-10% of the area should be used by cultural or recreational facilities, hardly any of these buildings were built. All past efforts to improve this situation failed, even though there is an attrictive site with roughly 10.000m² in size reserved for these very functions – the „Kulturfläche“. This master thesis aims to design a hybrid building on this specific site, that combines housing and culture, makes an improvement to the whole neighbourhood and counteracts with its functional density the issue of increasing space de-mands within a limited city area.