cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Patient-specific mammographic dose in a cohort of 1 million women: implications for population dose assessment
Creators: name: Hill, Melissa
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Dosimetric comparison
subject: Physics
subject: Dosimetry
subject: Audit and standards
subject: Mammography
subject: Radioprotection / Radiation dose
subject: Breast

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: The European Council Directive 2013/59/Euratom makes new emphasis on dose estimates that take patient-specific (PS) characteristics into consideration [1]. The importance of patient breast composition [2], and of tissue distribution [3,4] have been...
Many non-equivalent realizations of the associahedron
Creators: name: Ceballos, Cesar
name: Santos, Francisco
name: Ziegler, Günter M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Metric Geometry (math.MG)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 52B05, 52B11

description: Hohlweg and Lange (2007) and Santos (2004, unpublished) have found two different ways of constructing exponential families of realizations of the n-dimensional associahedron with normal vectors in {0,1,-1}^n, generalizing the constructions of Loday (2004) and Chapoton-Fomin-Zelevinsky (2002). We classify the associahedra obtained by these constructions modulo linear equivalence of their normal fans and show, in particular, that the only realization that can be obtained with both methods is the Chapoton-Fomin-Zelevinsky (2002) associahedron. For the Hohlweg-Lange associahedra our classification is a priori coarser than the classification up to isometry of normal fans, by Bergeron-Hohlweg-Lange-Thomas (2009). However, both yield the same classes. As a consequence, we get that two Hohlweg-Lange associahedra have linearly equivalent normal fans if and only if they are isometric. The Santos construction, which produces an even larger family of associahedra, appears here in print for the first time. Apart of describing it in detail we relate it with the c-cluster complexes and the denominator fans in cluster algebras of type A. A third classical construction of the associahedron, as the secondary polytope of a convex n-gon (Gelfand-Kapranov-Zelevinsky, 1990), is shown to never produce a normal fan linearly equivalent to any of the other two constructions.
description: 30 pages, 13 figures
Time Warp on the Go (Updated Version)
Creators: name: D'Angelo, Gabriele
name: Ferretti, Stefano
name: Marzolla, Moreno
Publisher: name: arXiv
Year: 2012
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: In this paper we deal with the impact of multi and many-core processor architectures on simulation. Despite the fact that modern CPUs have an increasingly large number of cores, most softwares are still unable to take advantage of them. In the last years, many tools, programming languages and general methodologies have been proposed to help building scalable applications for multi-core architectures, but those solutions are somewhat limited. Parallel and distributed simulation is an interesting application area in which efficient and scalable multi-core implementations would be desirable. In this paper we investigate the use of the Go Programming Language to implement optimistic parallel simulations based on the Time Warp mechanism. Specifically, we describe the design, implementation and evaluation of a new parallel simulator. The scalability of the simulator is studied when in presence of a modern multi-core CPU and the effects of the Hyper-Threading technology on optimistic simulation are analyzed.
description: Proceedings of 3nd ICST/CREATE-NET Workshop on DIstributed SImulation and Online gaming (DISIO 2012). In conjunction with SIMUTools 2012. Desenzano, Italy, March 2012. ISBN: 978-1-936968-47-3
Sr-Nd ISOTOPES IN MOSSES FROM ROMAGNA (ITALY) AND THEIR ENVIRONMENTAL SIGNIFICANCE
LES ISOTOPES DE Sr ET Nd DANS LES MOUSSES DE LA ROMAGNE (ITALIE) ET LEUR SIGNIFICATION ENVIRONNEMENTALE
GLI ISOTOPI DELLO Sr E DEL Nd NEI MUSCHI DELLA ROMAGNA (ITALIA) E IL LORO SIGNIFICATO AMBIENTALE
Creators: name: Castorina, Francesca; IGAG-CNR, C/O Dipartimento Scienze Della Terra, Università “La Sapienza”, Roma
name: Masi, Umberto; Dipartimento Di Scienze Della Terra, Università Di Roma “La Sapienza”, Roma
Publisher: name: EQA - International Journal of Environmental QualityEQA - International Journal of Environmental Quality
Year: 2013
Subjects: Sr-Nd isotopes; mosses; Romagna; Sr-Nd sources; pollution
isotopes du Sr et Nd; mousses; Romagne; sources de Sr et Nd; pollution
isotopi dello Sr e del Nd; muschi; Romagna; sorgenti di Sr e Nd; inquinamento

description: Sr-Nd isotopes were applied for the first time to the study of several moss samples from a transect stretching through Romagna from the Apennines to the Adriatic  sea coast. The isotopic data suggest that the mosses uptake Sr and Nd via atmospheric depositions from both marine carbonates and old siliceous crustal rocks. Anthropic pollution cannot be precisely evaluated because of the lack of univocal isotopic signature of the sources.
description: Les isotopes du Sr et Nd ont été appliqués pour la première fois à l’étude des échantillons de mousses pris en Romagne le long d’une section de la côte adriatique aux Apennins. Les données isotopiques suggèrent que les mousses captent Sr et Nd de la poussière atmosphèrique par deux sources, les carbonates marins et les roches de la croûte siliceuse. La pollution anthropique ne peut pas être évaluée certes, car elle n’a pas de signatures isotopiques typiques.
description: Gli isotopi dello Sr e del Nd sono stati applicati per la prima volta allo studio di campioni di muschio prelevati da un transetto attraverso la Romagna esteso dal mare adriatico agli Appennini. I risultati suggeriscono che i muschi prendono Sr e Nd tramite la polvere atmosferica da due sorgenti rappresentate dai carbonati marini e dalle rocce silicatiche crostali. L’inquinamento antropico non può essere valutato con certezza perché non è caratterizzato da parametri isotopici univoci.
description: EQA - International Journal of Environmental Quality; Vol 3 (2010); 9-14
MUQOBIL ENERGIYA MANBALARIDAN FOYDALANISHNI HUQUQIY TARTIBGA SOLISH MASALALARI
Creators: name: Berdiqulova Munira Faxriddin qizi Toshkent davlat yuridik universiteti magistri
Publisher: name: Zenodo
Year: 2023

description: Ushbu maqola muqobil energiya manbalari bilan bog'liq afzalliklarni o'rganadi va ularning kundalik hayotimizda tutgan o'rnining ahamiyati yuzasidan fikr yuritiladi.
title: Use of A National Integrated Medical Imaging System To Generate Diagnostic Reference Levels For Paediatric Projection Radiography
Creators: name: O Flynn, Cian
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Dosimetric comparison
subject: Radiation safety
subject: Dosimetry
subject: PACS
subject: Digital radiography
subject: Conventional radiography
subject: Radioprotection / Radiation dose
subject: Radiographers
subject: Paediatric

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Despite the emergence of imaging modalities such as ultrasound, magnetic resonance imaging and nuclear medicine, projection radiography remains an essential element of investigation into paediatric pathology [1]. Paediatric patients are...
Zero-temperature phase diagram of Yukawa bosons
Creators: name: Osychenko, O. N.
name: Astrakharchik, G. E.
name: Mazzanti, F.
name: Boronat, J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We study the zero-temperature phase diagram of bosons interacting via screened Coulomb (Yukawa) potential by means of the diffusion Monte Carlo method. The Yukawa potential is used as a model interaction in the neutron matter, dusty plasmas and charged colloids. As shown by D. S. Petrov et al. [Phys. Rev. Lett. 99, 130407 (2007)], interactions between weakly bound molecules of heavy and light fermionic atoms are described by an effective Yukawa potential with a strength related to the heavy-light mass ratio M/m which might lead to crystallization in a two-dimensional geometry if the mass ratio of heavy-light fermions exceeds a certain critical value. In the present work we do a thorough study of the quantum three-dimensional Yukawa system. For strong interactions (equivalently, large mass ratios) the system experiences several phase transitions as the density is increased, passing from gas to solid and to gas phase again. Weakly interacting Yukawa particles do not crystallize at any density. We find the minimal interaction strength at which the crystallization happens. In terms of the two-component fermionic system, this strength corresponds to a heavy-light mass ratio of M/m ~ 180, so that it is impossible to realize the gas-crystal transition in a conventional bulk system. For the Yukawa model of fermionic mixtures we also analyze the possibility of building molecular systems with very large effective mass ratios by confining the heavy component to a sufficiently deep optical lattice. We show how the effective mass of the heavy component can be made arbitrarily large by increasing the lattice depth, thus leading to a tunable effective mass ratio that can be used to realize a molecular superlattice.
description: added figure with finite-size dependence of the energy; comments and references added; title changed
Not so fragile : an ethnography of women glass blowers in western Canada
Creators: name: Siermacheski, Catherine
Publisher: name: University of British Columbia
Year: 2013

description: Guided by the principles of feminist ethnography and the philosophy of dialogical phenomenology, this research explores the glass community in western Canada through the eyes of seventeen women glass blowers. This unique collection of experiences elucidates the changes that have occurred in the glass community over the past four decades, and contributes to the story of glass in Canadian art and craft history. The glass world and glass objects exist in the liminal space between art and craft. As a place of growth and change, the liminal space is the antithesis of structure which therefore invites dialogue and creative development. By proposing that glass objects exist in the liminal space between art and craft, I am further proposing that women glass blowers in this space have formed a liminal 'communitas' shaped by their shared experiences. As there has been no ethnographic research done with women glass blowers in western Canada, it is of paramount importance to highlight the words and experiences of these experts; through their eyes we gain an understanding of the elite community of glass blowers in western Canada, and the challenges they face in their chosen career. Therefore, I have chosen to write the body of this dissertation in a narrative style, which not only honours the true spirit, if not intent of feminist research, but pays homage to these women by respecting that their words have relevance and should not be buried in theoretical generalizations.
Galois representations attached to automorphic forms on GL_2 over CM fields
Creators: name: Mok, Chung Pang
Publisher: name: arXiv
Year: 2011
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11R39, 22E55

description: In this paper we generalize the work of Harris-Soudry-Taylor and construct the compatible systems of two-dimensional Galois representations attached to cuspidal automorphic representations of cohomological type on GL_2 over a CM field with a suitable condition on their central characters. We also prove a local-global compatibility statement, up to semisimplification.
description: 61 pages
Statistical modelling of breast cancer risk for British Columbian women
Creators: name: Hoegg, Tanja
Publisher: name: University of British Columbia
Year: 2013

description: Although there are many known factors associated with an increased risk of breast cancer, age remains the main eligibility criterion for the current Screening Mammography Program of British Columbia (SMP BC). In the light of recent controversy surrounding regular breast screening, the ability of targeted screening for high-risk women is of current interest as it has the potential to sustain high cancer detection rates, reduce the number of false positive results while controlling the overall costs. Multiple models have been proposed to estimate a woman’s risk of breast cancer given her current risk factor profile, the model introduced by Gail et al. in 1989 being particularly popular. Using five-year follow-up data of 223,399 SMP BC participants, we investigate whether the probability estimates of the Gail model adequately stratify the British Columbian population into groups of high and low-risk women and, hence, provide a basis for a personalized access criterion into the Screening Mammography Program. Further, we built a breast cancer risk model for British Columbia with the goal to include a stronger set of predictor variables and improve the outcome stratification of the Gail model. Neither the Gail model nor the new risk prediction model based on SMP BC participants showed adequate stratification properties. Overall, effect sizes of all covariates were too small to clearly separate risk estimates of future breast cancer cases and non-cases. It is questionable whether changes in screening policies should be based on breast cancer risk prediction models.
Higher-order adaptive finite-element methods for orbital-free density functional theory
Creators: name: Motamarri, Phani
name: Iyer, Mrinal
name: Knap, Jaroslaw
name: Gavini, Vikram
Publisher: name: arXiv
Year: 2011
Subjects: subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: In the present work, we investigate the computational efficiency afforded by higher-order finite-element discretization of the saddle-point formulation of orbital-free density functional theory. We first investigate the robustness of viable solution schemes by analyzing the solvability conditions of the discrete problem. We find that a staggered solution procedure where the potential fields are computed consistently for every trial electron-density is a robust solution procedure for higher-order finite-element discretizations. We next study the numerical convergence rates for various orders of finite-element approximations on benchmark problems. We obtain close to optimal convergence rates in our studies, although orbital-free density-functional theory is nonlinear in nature and some benchmark problems have Coulomb singular potential fields. We finally investigate the computational efficiency of various higher-order finite-element discretizations by measuring the CPU time for the solution of discrete equations on benchmark problems that include large Aluminum clusters. In these studies, we use mesh coarse-graining rates that are derived from error estimates and an a priori knowledge of the asymptotic solution of the far-field electronic fields. Our studies reveal a significant 100-1000 fold computational savings afforded by the use of higher-order finite-element discretization, alongside providing the desired chemical accuracy. We consider this study as a step towards developing a robust and computationally efficient discretization of electronic structure calculations using the finite-element basis.
description: 43 Pages
Gaston Bachelard: i sogni dell’immaginazione materiale e il cosmo di ferro
Creators: name: Bulcão, Marly
Publisher: name: Università degli  Studi di Milano
Year: 2012
Subjects: Bachelard, material imagination, iron cosmos

description: Gaston Bachelard’s incursions into the beaten tracks of image creation inaugurate a new conception of imagination. By departing from a criticism of what is called reproductive imagination, which is based on the contemplation of things, he shows instead that true imagination is creative because it instantiates a surreal world.

The purpose of this work is to understand the process of image production, as well as the creative act inherent to imagination. In order to accomplish this, we revisit the notion of ‘material imagination’, which we consider an essential pressuposition in the more poetic side of Bachelard.

Even though it is well known that Bachelard privileges poetry and literature over other art forms, we turn our attention to the philosophical texts in which he talks about the plastic arts, such as painting and sculpture, in order to demonstrate the salutary action of the dreams of the will on the subject, as well as the importance of the manual work of the artist which has been made dynamic by his creative work.

Our study will take the analysis of the work of Eduardo Chillida made by Bachelard, in order to show in what sense a sculptor, who becomes a metalworker, succeeds at plunging into the dreams of iron and, by perceiving the metal propagating its force, creates artistic works which present themselves as materialized echoes of the beating of the hammer on iron.

It will become obvious in the conclusion of this essay that true imagination cannot simply be a copy of reality. By distancing itself from sensible reality, the artist’s imagination succeeds in constructing images that are fundamentally material ones. On their turn, these make possible for the artist to surpass, by means of a struggle between his hands and the matter of the world, the level of everyday life, thus reaching out to what can be taken as a true aesthetic revolution.
description: Altre Modernità, 2012: NUMERO SPECIALE Bachelard e la plasticità della materia
Supersymmetric Extension of Technicolor & Fermion Mass Generation
Creators: name: Antola, Matti
name: Di Chiara, Stefano
name: Sannino, Francesco
name: Tuominen, Kimmo
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We provide a complete extension of Minimal Walking Technicolor able to account for the standard model fermion masses. The model is supersymmetric at energies greater or equal to the technicolor compositeness scale. We integrate out, at the supersymmetry breaking scale, the elementary Higgses. We use the resulting four-fermion operators to derive the low energy effective theory. We then determine the associated tree-level vacuum and low energy spectrum properties. Furthermore we investigate the phenomenological viability of the model by comparing its predictions with electroweak precision tests and experimental bounds on the mass spectrum. We then turn to the composite Higgs phenomenology at the LHC and show that current data are already constraining the parameter space of the model.
description: 43 pages, 13 figures. Version published on NPB. Typos corrected, results unchanged
Bachelard, a present: au coeur de l’oeuvre de Giuseppe Penone
Creators: name: Regimbald, Manon
Publisher: name: Università degli  Studi di Milano
Year: 2012
Subjects: Visual art, Penone, Cosmos, Matter

description: The perennial relevance of Bachelard’s poetic insight makes him a prophet for an age of ecological alienation. He clarifies the intuition of visual artists "since the 1960's", exemplified in the art of Giuseppe Penone, and their common “volonté de regarder à l’intérieur des choses.” How then does an artist such as Penone go from inside real things to arrive at this “intimité des substances” (Bachelard 1948 : 5). How do both men aspire to “l’immensité intime”?
description: Altre Modernità, 2012: NUMERO SPECIALE Bachelard e la plasticità della materia
Reaching imaginary places: resonance and reverberation
Creators: name: Sabolius, Kristupas
Publisher: name: Università degli  Studi di Milano
Year: 2012
Subjects: material imagination, dream, reverie, rhythm, resonance, reverberation

description: Based on Bachelard’s phenomenological take on the temporality of imagination, this paper analyzes a few works by Marcos Lutyens, a contemporary artist. Bachelard offers two concepts that bring about an altered temporality of material imagination: resonance and reverberation. Resonance is a dynamical condition through which the world discloses its imaginary opportunities: it oscillates with larger amplitude at some frequencies than it does at others. Under this intense state, the attunement of two rhythms, the rhythm of consciousness and the world-rhythm, can occur. Reverberation technically means a further step, i.e., a change in the configuration of our rhythmical settings through the intrusion of an alien vibration: we are possessed by external rhythms; the so-called depth of our interiority is affected by an alien energy, and we vibrate in tune with alien rhythms.

By reshaping the rhythmical organization of one’s perception (using hypnosis, a trance state and registered body automatisms), Lutyens tries to trace pathways related to unconscious thought processes. Shifting the experience of duration, he moves through imaginary environments within the preconscious that are progressively charted and recorded. Consequently it appears that what is “penetration” in space is marked by resonance and reverberation in time.
description: Altre Modernità, 2012: NUMERO SPECIALE Bachelard e la plasticità della materia
Avalanche analysis from multi-electrode ensemble recordings in cat, monkey and human cerebral cortex during wakefulness and sleep
Creators: name: Dehghani, Nima
name: Hatsopoulos, Nicholas G.
name: Haga, Zach D.
name: Parker, Rebecca A.
name: Greger, Bradley
name: Halgren, Eric
name: Cash, Sydney S.
name: Destexhe, Alain
Publisher: name: arXiv
Year: 2012
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Self-organized critical states are found in many natural systems, from earthquakes to forest fires, they have also been observed in neural systems, particularly, in neuronal cultures. However, the presence of critical states in the awake brain remains controversial. Here, we compared avalanche analyses performed on different in vivo preparations during wakefulness, slow-wave sleep and REM sleep, using high-density electrode arrays in cat motor cortex (96 electrodes), monkey motor cortex and premotor cortex and human temporal cortex (96 electrodes) in epileptic patients. In neuronal avalanches defined from units (up to 160 single units), the size of avalanches never clearly scaled as power-law, but rather scaled exponentially or displayed intermediate scaling. We also analyzed the dynamics of local field potentials (LFPs) and in particular LFP negative peaks (nLFPs) among the different electrodes (up to 96 sites in temporal cortex or up to 128 sites in adjacent motor and pre-motor cortices). In this case, the avalanches defined from nLFPs displayed power-law scaling in double log representations, as reported previously in monkey. However, avalanche defined as positive LFP (pLFP) peaks, which are less directly related to neuronal firing, also displayed apparent power-law scaling. Closer examination of this scaling using more reliable cumulative distribution functions (CDF) and other rigorous statistical measures, did not confirm power-law scaling. The same pattern was seen for cats, monkey and human, as well as for different brain states of wakefulness and sleep. We also tested other alternative distributions. Multiple exponential fitting yielded optimal fits of the avalanche dynamics with bi-exponential distributions. Collectively, these results show no clear evidence for power-law scaling or self-organized critical states in the awake and sleeping brain of mammals, from cat to man.
description: In press in: Frontiers in Physiology, 2012, special issue "Critical Brain Dynamics" (Edited by He BY, Daffertshofer A, Boonstra TW); 33 pages, 13 figures. 3 tables
Vere risonanze elusive: la poetica del compositore Federico Incardona nello specchio di Maldoror riflesso da Bachelard
Creators: name: Lombardi Vallauri, Stefano
Publisher: name: Università degli  Studi di Milano
Year: 2012
Subjects: contemporary music, transformation, vitality, dedecafonic series, cultural complexe, anti-conceptual

description: The musical poetics of the composer Federico Incardona (Palermo, 1958-2006) reveals deep affinities with the Chants de Maldoror by Isidore Ducasse. The method used to identify and analyze these affinities is an inter-disciplinary triangulation, linking music and poetry through the psychological and philosophical reading of the Chants given by Gaston Bachelard in his essay of 1939. The “active” poetry of Lautréamont, his “cinétisme”, his “dynamogénie” are reflected in the Incardonian idea of composition as transmutation of living bodies into sound. This is achieved by a treatment of timbre, articulation and intensity extremely mobile, “alive”, and by a tempo that combines an exhausted slowness with an aggressive, almost animal rapidity. The very act of composition can be conceived, in analogy to hunting, such as “capture” of sounds, in particular thanks to the twelve-tone device. The “complex of Lautréamont” is a phenomenon inextricably psychological and cultural; so also in Incardona adolescence is transformed from existential motive into artistic motif. Starting from the case of Lautréamont, Bachelard formulates a general poetics of metamorphosis, which extends validly in music, especially in the informal writing of Incardona. Finally, Lautréamont is useful to Bachelard for grafting, onto the “living” basis of writing, cultural and intellectual values??; Incardona as well, intending music as “night mathematics”, combines construction and expression, emotion and serial structure.
description: Altre Modernità, 2012: NUMERO SPECIALE Bachelard e la plasticità della materia
Heavy Vector-like Top Partners at the LHC and flavour constraints
Creators: name: Cacciapaglia, Giacomo
name: Deandrea, Aldo
name: Gaur, Naveen
name: Harada, Daisuke
name: Okada, Yasuhiro
name: Panizzi, Luca
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider the phenomenology at the Large Hadron Collider of new heavy vector-like quarks which couple mainly to the third generation quarks via Yukawa interactions, with special emphasis on non-standard doublet representations which are less constrained from present data. We also discuss in detail the flavour limits at tree level and loop level and implications of a generalised CKM mixing matrix to these cases.
description: 45 pages, 20 figures, 8 tables. Updated limits in the B-physics part, typos corrected, minor modifications in the LHC part
Le cinéma est-il bachelardien? hypothèse théoriques autour de la matière (et) des images
Creators: name: Thouvenel, Éric
Publisher: name: Università degli  Studi di Milano
Year: 2012
Subjects: Cinema, Bergson, Perception, Mouvement Image

description: Either in his epistemological or "poetic" writings, Gaston Bachelard has almost never referred to the cinema – of which he was contemporary –, unlike other artistic practices, more valued, such as painting or engraving. Where, exceptionally, he mentions the device that produces moving images, this is called as a foil or a negative model, also like his theoretical "opponent" Henri Bergson.

This text offers from this "missed encounter" between Bachelard and films to re-examine the relation of the philosopher with the material, either in the books on the four elements and in the epistemological works like Le matérialisme rationnel and Les intuitions atomistiques. Indeed, cinema is an ambiguous art: deeply material in its main relationship with the real and, at the same time, secured by its mode of production (recording) and presentification (projection) of the images, an immaterial dimension that is now accelerating.

By his constant attention to the tangible presence of things, to the qualities of material, to the fundamental relationship between the eye and the hand in a perspective even more phenomenological, Bachelard's thinking help to think the material dimension of motion pictures, often underestimated or simply removed. Conversely, the cinema has been accustomed us to original forms of perception (the blur, the fade, the overprinting, the slow or accelerated motion), which can explain certain aspect of philosopher’s thinking, which have been very few convened.
description: Altre Modernità, 2012: NUMERO SPECIALE Bachelard e la plasticità della materia
Nanodots of Transition Metal Sulfides, Carbonates, and Oxides Obtained Through Spontaneous Co-Precipitation with Silica
Creators: name: Rödig, Bastian
name: Funkner, Diana
name: Frank, Thomas
name: Schürmann, Ulrich
name: Rieder, Julian
name: Kienle, Lorenz
name: Kunz, Werner
name: Kellermeier, Matthias
Publisher: name: Universität Regensburg
Year: 2024
Subjects: subject: nanodots; transition metal oxides; transition metal sulfides; silica; co-precipitation; core–shell particles; self-assembly
subject: 540 Chemie

description: The controlled formation and stabilization of nanoparticles is of fundamental relevance for materials science and key to many modern technologies. Common synthetic strategies to arrest growth at small sizes and prevent undesired particle agglomeration often rely on the use of organic additives and require non-aqueous media and/or high temperatures, all of which appear critical with respect to production costs, safety, and sustainability. In the present work, we demonstrate a simple one-pot process in water under ambient conditions that can produce particles of various transition metal carbonates and sulfides with sizes of only a few nanometers embedded in a silica shell, similar to particles derived from more elaborate synthesis routes, like the sol–gel process. To this end, solutions of soluble salts of metal cations (e.g., chlorides) and the respective anions (e.g., sodium carbonate or sulfide) are mixed in the presence of different amounts of sodium silicate at elevated pH levels. Upon mixing, metal carbonate/sulfide particles nucleate, and their subsequent growth causes a sensible decrease of pH in the vicinity. Dissolved silicate species respond to this local acidification by condensation reactions, which eventually lead to the formation of amorphous silica layers that encapsulate the metal carbonate/sulfide cores and, thus, effectively inhibit any further growth. The as-obtained carbonate nanodots can readily be converted into the corresponding metal oxides by secondary thermal treatment, during which their nanometric size is maintained. Although the described method clearly requires optimization towards actual applications, the results of this study highlight the potential of bottom-up self-assembly for the synthesis of functional nanoparticles at mild conditions.
An Alternative Form of the Functional Equation for Riemann's Zeta Function, II
Creators: name: Ossicini, Andrea
Publisher: name: arXiv
Year: 2012
Subjects: subject: History and Overview (math.HO)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 2010: 11M06, 11M26, 11B68

description: This paper treats about one of the most remarkable achievements by Riemann, that is the symmetric form of the functional equation for ζ(s). We present here, after showing the first proof of Riemann, a new, simple and direct proof of the symmetric form of the functional equation for both the Eulerian Zeta function and the alternating Zeta function, connected with odd numbers. A proof that Euler himself could have arranged with a little step at the end of his paper "Remarques sur un beau rapport entre les séries des puissances tant direct que réciproches". This more general functional equation gives origin to a special function, here named {\cyr \E}(s), which we prove that it can be continued analytically to an entire function over the whole complex plane using techniques similar to those of the second proof of Riemann. Moreover we are able to obtain a connection between Jacobi's imaginary transformation and an infinite series identity of Ramanujan. Finally, after studying the analytical properties of the function {\cyr \E}(s), we complete and extend the proof of a Fundamental Theorem, both on the zeros of Riemann Zeta function and on the zeros of Dirichlet Beta function, using also the Euler-Boole summation formula.
description: 26 pages, 2 figures
Joint IMOTHEP / CAJU workshop on Hybrid Electric Propulsion - FutPrint50
Creators: name: Windels, E.
Publisher: name: Zenodo
Year: 2023
Subjects: IMOTHEP
aviation
greenaviation
H2020transport
CINEA
CAJU
climatechange
HEP
EU
H2020
horizoneurope

description: Presentation at the Joint IMOTHEP / CAJU workshop on Hybrid Electric Propulsion (HEP) at Eurocontrol in Brussels (B) on 29 &30 November 2023.
Surrazionalismo: Bachelard e la plasticità della ragione
Creators: name: Bonicalzi, Francesca
Publisher: name: Università degli  Studi di Milano
Year: 2012
Subjects: Surrationalism, Surrealism, Epistemology, Phylosophy of no

description: With his article Surrationalism, 1936, (now in The Rationalist Engagement), Gaston Bachelard codifies the neologism ‘surrationalism’ by which he describes his engagement in favor of a kind of rationality that rejects any closing within the dogmas of indisputable knowledge. The aim of this paper is not only to analyze this concept in its connection with the ‘philosophy of no’ and the ‘philosophy of re’, but also to highlight the semantic effect of the ‘sur’ that in Bachelard’s text multiplies and produces many neologisms. This necessity to provoke language to take over the effect of liberty produced by surrationalism could find another theoretical resource in the term ‘plasticity’, as it is used by Catherine Malabou to characterize Hegelian thought and as it is taken by Derrida to identify a kind of reason which does not dominate reality.
description: Altre Modernità, 2012: NUMERO SPECIALE Bachelard e la plasticità della materia
New Bachelards?: Reveries, Elements and Twenty-First Century Materialisms
Creators: name: Smith, James L.
Publisher: name: Università degli  Studi di Milano
Year: 2012
Subjects: Gaston Bachelard; Elemental Philosophy; Material Philosophy; Intellectual History; Comparative Analysis; James L. Smith

description: Recent years have seen an infusion of new ideas into material philosophy through the work of the so-called ‘new materialists’. Poignant examples appear within two recent books: the first, Vibrant Matter by Jane Bennett (2010), sets out to “enhance receptivity to the impersonal life that surrounds and infuses us” (2010: 4). The second, Elemental Philosophy by David Macauley (2010), advocates an anamnesis or recollection of the elements as imaginatively dynamic matter. Within his essays on the imagination of matter, Gaston Bachelard outlined an archetypal vision of the elements predicated upon the material imagination. He explored the manner in which the imagination inhabits the world, is triggered by the stimulus of material dynamism, and is formed from a co-constitution of subject and object. This article proposes that recent trends in materialist philosophy – as exemplified by the monographs of Bennett and Macauley – reinforce the ideas of Bachelard and take them in new directions. Bachelard provides us with a compelling argument for the rediscovery of material imagination, whereas New Materialism portrays a vision of matter filled with autonomous dynamism that lends itself to entering into a relationship with this imagination. Consequently, this article proposes that Gaston Bachelard has gained a new relevance as a result of contemporary trends in material philosophy, has taken on new possibilities through recent scholarship, and remains a force within the twenty-first century discursive landscape.
description: Altre Modernità, 2012: NUMERO SPECIALE Bachelard e la plasticità della materia
Bachelard et la psychanalyse de la “matière noire”
Creators: name: Bontems, Vincent
Publisher: name: Università degli  Studi di Milano
Year: 2012
Subjects: Darkness, Black bodies, Black holes, Dark matters, Colour

description: On several occasions, Gaston Bachelard has suggested that his poetic of elements could be extended beyond the four chemical elements, notably by increasing the specificity of the material imagination related to darkness, to the nocturne element, to the material called “la ténèbre” (the darkness). According to this thinking, we propose a dual examination of some physical concepts which include the adjective "black(/dark)": the black bodies, the black holes, and the dark matters. To understand the nature of these dark thoughts, it is necessary to explain the process by which the physical transforms the meaning of the adjective, but also five free rein to a poetic digression that reveals how the dark "colours" concepts by associating them with other images. The riddle of the black body radiation is no longer simply the opportunity to explore the quantum but also the pattern of a self-awareness rêverie; the black hole is not only a singularity of the theory of general relativity but also a symbol of great depression; the dark matter is no longer just an astrophysics hypothesis but also the object of a fantasized alchemical research. Combining psychoanalysis and epistemology of knowledge about the physical "black" we hope to show how the duality of Bachelard’s philosophy responds to the provocations of material to think and dream.
description: Altre Modernità, 2012: NUMERO SPECIALE Bachelard e la plasticità della materia
All entangled pure states violate a single Bell's inequality
Creators: name: Yu, Sixia
name: Chen, Qing
name: Zhang, Chengjie
name: Lai, C. H.
name: Oh, C. H.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show that a single Bell's inequality with two dichotomic observables for each observer, which is originated from Hardy's nonlocality proof without inequalities, is violated by all entangled pure states of a given number of particles, each of which may have a different number of energy levels. Thus Gisin's theorem is proved in its most general form from which it follows that for pure states Bell's nonlocality and quantum entanglement are equivalent.
description: 7 pages 1 table and 1 appendix
La Psychanalyse matérielle chez Bachelard
Creators: name: Arruda, Francimar
Publisher: name: Università degli  Studi di Milano
Year: 2012
Subjects: Keywords: Bachelard, philosophy, psychoanalysis

description: The objective of this work is to develop a reflection on the meaning of psychoanalysis material proposed by Bachelard in poetic side of his work. We will seek to show, throughout development, that the meaning of the term psychoanalysis is totally different in two aspects: epistemological and poetic.
 This is because in epistemology, Bachelard exalts psychoanalysis as a method, while in poetry, criticizes the intensive Freudian psychoanalysis, showing that, due to its therapeutic purpose, fails to grasp the picture and dream of themselves, but rather rationalizes the . The text will become evident that only psychoanalysis material that leads to an area on the intimacy of the matter may result in the production of images and dreams whose dynamism leads to better understanding of the human spirit.
description: Altre Modernità, 2012: NUMERO SPECIALE Bachelard e la plasticità della materia
title: DEPRECATED: APPLICATION OF SAMPLING TECHNIQUES TO THE PHASE-CONTROLLED THYRISTOR CYCLOCONVERTER
Creators: name: HANLEY, G. A.
Publisher: name: University of Plymouth
Year: 1976

description: Low frequency distortion components of the output voltage of a cycloconverter are largely responsible for the restriction on its practical range: of frequencies, and the object of this thesis is to show that these components can be attenuated by the application of sampling techniques to the control system. After a general description of the operation and control of the cycloconverter, the distortion of the output waveform due to low frequency components is discussed. Under these circumstances, the fundamental repetition frequency of the waveform is less than the wanted output frequency, and two methods of determining it for given input and output frequencies are developed. The characteristics and properties of the low frequency distortion components, and the requirements for attenuating them are analysed. The particular effects on the magnitudes of these components due to operation of the cycloconverter in the inhibited mode, rather than the circulating-current mode, are examined and the requirements for attenuating them are identified. It is shown that the communications engineering processes of pulse width modulation and of natural sampling can be identified in the control of the cycloconverter. Regular sampling is more widely used in communications engineering, and its effect on the low frequency distortion components in the cycloconverter output is compared with natural sampling. A modified control method for the inhibited cycloconverter is then developed to attenuate these components. Digital computer programs were written to test the effect of introducing modifications to the control of the cycloconverter, and the more significant results are given in graphical and tabulated form. An experimental cycloconverter, with an inhibition control circuit designed for this project, was constructed to check the validity of the computer programs. The design details are described, and the experimental results are discussed.
Regularization strategy for the layered inversion of airborne TEM data: application to VTEM data acquired over the basin of Franceville (Gabon)
Creators: name: Guillemoteau, Julien
name: Sailhac, Pascal
name: Behaegel, Mickael
Publisher: name: arXiv
Year: 2012
Subjects: subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: Airborne transient electromagnetic (TEM) is a cost-effective method to image the distribution of electrical conductivity in the ground. We consider layered earth inversion to interpret large data sets of hundreds of kilometre. Different strategies can be used to solve this inverse problem. This consists in managing the a priori information to avoid the mathematical instability and provide the most plausible model of conductivity in depth. In order to obtain fast and realistic inversion program, we tested three kinds of regularization: two are based on standard Tikhonov procedure which consist in minimizing not only the data misfit function but a balanced optimization function with additional terms constraining the lateral and the vertical smoothness of the conductivity; another kind of regularization is based on reducing the condition number of the kernel by changing the layout of layers before minimizing the data misfit function. Finally, in order to get a more realistic distribution of conductivity, notably by removing negative conductivity values, we suggest an additional recursive filter based upon the inversion of the logarithm of the conductivity. All these methods are tested on synthetic and real data sets. Synthetic data have been calculated by 2.5D modelling; they are used to demonstrate that these methods provide equivalent quality in terms of data misfit and accuracy of the resulting image; the limit essentially comes on special targets with sharp 2D geometries. The real data case is from Helicopter-borne TEM data acquired in the basin of Franceville (Gabon) where borehole conductivity loggings are used to show the good accuracy of the inverted models in most areas, and some biased depths in areas where strong lateral changes may occur.
Coupling extrasynaptic NMDA receptors to aberrant intracellular signaling in Huntington disease
Creators: name: Dau, Alejandro
Publisher: name: University of British Columbia
Year: 2013

description: N-methyl-D-aspartate glutamate receptors (NMDARs) play dichotomous roles on neuronal survival, depending on their surface localization: while synaptic NMDARs promote pro-survival pathways, those expressed at extrasynaptic sites (Ex-NMDARs) trigger pro-death cascades. In the YAC128 transgenic mouse model of Huntington disease (HD), elevated Ex-NMDAR expression contributes to the onset of cognitive dysfunction and striatal death. A shift in the balance of synaptic-extrasynaptic NMDAR signaling and localization is paralleled by dysregulation of intracellular calcium signaling pathways that couple to pro-death cascades. However, whether aberrant calcium signaling is a consequence of elevated Ex-NMDAR expression in HD is unknown. Here, we examined calcium-dependent pathways downstream of Ex-NMDARs in HD. Chronic (2-month) treatment of YAC128 and WT mice with memantine (1 and 10mg/kg/d), which at a low dose selectively blocks Ex-NDMARs, reduced striatal Ex-NMDAR expression in YAC128 mice without altering synaptic NMDAR levels. In contrast, calpain activity was not affected by memantine treatment, and was elevated in untreated YAC128 mice at 1.5 months but not 4 months of age. In YAC128 mice, memantine at 1mg/kg/d rescued CREB shut-off, while both doses suppressed p38 MAPK activation to WT levels. In contrast, extrasynaptic PSD-95 expression was not affected by memantine in YAC128 mice but was increased by memantine at 10mg/kg/d in WT littermates. Hence, Ex-NMDAR activity drives increased extrasynaptic receptor expression as well as dysregulated p38 MAPK and CREB signaling in HD. Elucidation of the pathways centered around Ex-NMDARs in HD could help provide novel therapeutic targets for this disease.
THE ROLE OF PEASANT FARMS IN THE DEVELOPMENT OF AGRICULTURE
Creators: name: Shuhrat Bafoyevich Adizov. Shakhzod Salimov Odiljon o'g'li,  Rajabov Azizbek G'ulom o'gli. Bukhara institute of natural resourses management
Publisher: name: Zenodo
Year: 2023

description: The little family dehkan farms of household goods, personal based on the work of the family members, inheritance left to possess a plot of land given to the head of the family lifetime and will produce agricultural product of the sale.
YOSHLIK DAVRIDAGI PSIXOLOGIK OMILLARNING YORITILISHI VA YOSHLIK DAVRIGA XOS BO'LGAN IJTIMOIY FAOLLIK
Creators: name: Qo'qon davlat pedagogi instituti Fakultetlararo  pedagogika va psixologiya kafedra o'qituvchisi PhD Mamayusupova Iroda Xamidovna Taabiy fanlar  fakulteti Bialogiya yo'nalishi talabasi  Рахмонова Рухшона Рахмутулло кизи                                Yuldashbaeva Oyshbonu Dilmurod qizi
Publisher: name: Zenodo
Year: 2023

description: In this article, youth is highlighted as a socio-historical category and the limits of youth. Personality development in youth. Determination of the meaning of life and manifestation of the system of life values. Formation of an individual lifestyle. Youth crisis. Social activity of youth. Achieving a new social status and professional identity.
Key words: youth, socio-historical category, personality development, meaning of life, life values.