cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Anthropological characteristics and morphological similarity of individuals from the cemetery of Kutná Hora-Karlov (okr. Kutná Hora / CZ)
Creators: name: Maxová, Eliška
name: Velemínský, Petr
name: Likovský, Jakub
Publisher: name: University Library Heidelberg
Year: 2013

description: The subject of this paper is an anthropological assessment of the skeletal remains from the cemetery of Kutná Hora-Karlov and the evaluation of morphological-phenotypical variability of selected discrete cranial and dental traits. This variability could indicate some biological relationships among individuals and their connection to other population groups. We obtained interesting results when comparing the incidence of selected discrete traits from Kutná Hora-Karlov with corresponding ones from the burial site of Münsingen-
Rain / CH. Increased incidence of these traits in individuals from Münsingen-Rain may indicate the practice of endogamy. If we accept this hypothesis, we can speculate about endogamic rules at weddings also in the middle La Tène in Bohemia, too at least in eastern Bohemia. However, the question remains about the scale of the practices within the cemetery of Kutná Hora-Karlov (e. g. within the framework of an extended family, a settlement area or a microregion).
description: Vorgestellt wird eine anthropologische Bewertung der Skelettkollektion vom Gräberfeld Kutná Hora-Karlov und die Untersuchung der morphologischen/phänotypischen Variabilität, wobei die letztere ihren Ausdruck in ausgewählten kranialen und dentalen Merkmalen findet. Diese Variabilität könnte biologische Beziehungen der Bestatteten in Kutná Hora-Karlov und ihre Verbindung zu weiteren Populationsgruppen andeuten. Interessante Feststellungen konnten beim Vergleich ausgewählter Merkmale des Gräberfeldes Kutná Hora- Karlov mit entsprechenden Merkmalen der Begräbnisstätte Münsingen-Rain / CH gemacht werden. Das höhere Vorkommen bestimmter diskreter Merkmale in der Begräbnisstätte Münsingen-Rain wurde mit praktizierter Endogamie in Zusammenhang gebracht. Falls wir diese Annahme akzeptieren, dann können wir die Existenz endogamer Regeln bei Eheschließungen auch in der böhmischen mittleren Latènezeit vermuten, zumindest in Ostböhmen. Es bleibt natürlich die Frage, in welchem Ausmaß diese Regeln in Kutná Hora-Karlov praktiziert wurden (z. B. im Rahmen einer erweiterten Familie, eines Siedlungsareals oder einer Mikro region).
1016_SuzukiSR_figshare.docx
Creators: name: Suzuki, Mizue
name: Nagano, Ayano
name: Saino, Yoko
name: Ueshima, Junko
name: Kawase, Fumiya
name: Kobayashi, Haruko
name: Murotani, Kenta
name: Inoue, Tatsuro
name: Nagami, Shinsuke
name: Maeda, Keisuke
Publisher: name: figshare
Year: 2022
Subjects: subject: 111702 Aged Health Care
subject: FOS: Health sciences
subject: 110308 Geriatrics and Gerontology
subject: FOS: Clinical medicine
subject: 110314 Orthopaedics
subject: 110321 Rehabilitation and Therapy (excl. Physiotherapy)
subject: 110323 Surgery

description: Dysphagia is an important health problem in the older adults. Recently, an increasing number of patients with dysphagia have been reported, not only in cerebrovascular disease and head and neck cancer, but also in orthopedic patients. Dysphagia and orthopedic conditions are common in the aging population, and their combination may lead to additional adverse health events. Determining the prevalence of dysphagia in patients with orthopedic diseases may provide useful information for future research questions and solutions.
Prevalence of dysphagia in patients after orthopedic surgery
Creators: name: Suzuki, Mizue
name: Nagano, Ayano
name: Saino, Yoko
name: Ueshima, Junko
name: Kawase, Fumiya
name: Kobayashi, Haruko
name: Murotani, Kenta
name: Inoue, Tatsuro
name: Nagami, Shinsuke
name: Maeda, Keisuke
Publisher: name: figshare
Year: 2022
Subjects: subject: 111702 Aged Health Care
subject: FOS: Health sciences
subject: 110308 Geriatrics and Gerontology
subject: FOS: Clinical medicine
subject: 110314 Orthopaedics
subject: 110321 Rehabilitation and Therapy (excl. Physiotherapy)
subject: 110323 Surgery

description: Dysphagia is an important health problem in the older adults. Recently, an increasing number of patients with dysphagia have been reported, not only in cerebrovascular disease and head and neck cancer, but also in orthopedic patients. Dysphagia and orthopedic conditions are common in the aging population, and their combination may lead to additional adverse health events. Determining the prevalence of dysphagia in patients with orthopedic diseases may provide useful information for future research questions and solutions.
Effective interaction: From nuclear reactions to neutron stars
Creators: name: Basu, D. N.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: An equation of state (EoS) for symmetric nuclear matter is constructed using the density dependent M3Y effective interaction and extended for isospin asymmetric nuclear matter. Theoretically obtained values of symmetric nuclear matter incompressibility, isobaric incompressibility, symmetry energy and its slope agree well with experimentally extracted values. Folded microscopic potentials using this effective interaction, whose density dependence is determined from nuclear matter calculations, provide excellent descriptions for proton, alpha and cluster radioactivities, elastic and inelastic scattering. The nuclear deformation parameters extracted from inelastic scattering of protons agree well with other available results. The high density behavior of symmetric and asymmetric nuclear matter satisfies the constraints from the observed flow data of heavy-ion collisions. The neutron star properties studied using $β$-equilibrated neutron star matter obtained from this effective interaction reconcile with the recent observations of the massive compact stars.
description: 11 pages including 2 figures and 3 tables; Invited talk delivered at the National Conference on Nuclear Physics, March 01 - 03 2013, School of Physics, Sambalpur University, India
Bose Einstein condensation of the classical axion field in cosmology?
Creators: name: Davidson, Sacha
name: Elmer, Martin
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The axion is a motivated cold dark matter candidate, which it would be interesting to distinguish from weakly interacting massive particles. Sikivie has suggested that axions could behave differently during non-linear galaxy evolution, if they form a Bose-Einstein condensate, and argues that ``gravitational thermalisation'' drives them to a Bose-Einstein condensate during the radiation dominated era. Using classical equations of motion during linear structure formation, we explore whether the gravitational interactions of axions can generate entropy. At linear order in Newton's constant, we interpret that the principle activities of gravity are to expand the Universe and grow density fluctuations. To quantify the rate of entropy creation we use the anisotropic stress to estimate a short dissipation scale for axions, which does not confirm previous estimates of their gravitational thermalisation rate.
description: version accepted for publication, modified intro to Bose Einstein condensation
PAESAGGI INTERROTTI. GEOSTORIA E GEOFILOSOFIA DEI LUOGHI ABBANDONATI
Creators: name: MARINI, ANDREA
Publisher: name: Universit� degli Studi di Milano
Year: 2016

description: Ci� che si vuole proporre con questo elaborato � l?analisi del problema dell?abbandono nella contemporaneit�, ritrovando in questo tema uno dei nodi principali del dibattito attuale sull?ambiente, il territorio e il paesaggio. Si � deciso di strutturare il lavoro in tre parti nelle quali si cercher� di capire prima come si � arrivati ad un rapporto cos� oppressivo nei confronti dello spazio e quali siano gli elementi culturali e filosofici che hanno guidato questa forma di occupazione dello spazio, a partire dall?origine del rapporto geografico e proto-geografico dell?uomo con la Terra e seguendo l?evoluzione della caratterizzazione del globo terracqueo nel corso della storia umana; da questo problema e quindi dall?origine dell?uniformazione del mondo si arriver� a capire quali problemi abbia portato questo processo e si user� come elemento di analisi il paesaggio e la sua storia, in particolare si far� riferimento all?evoluzione del concetto prima come elemento puramente lessicale, poi come rappresentazione - in particolare si studier� la variazione dell?esempio della montagna all?interno della rappresentazione culturale del paesaggio - e infine verr� studiato quale problema cardine dell?epoca attuale con lo scopo di arrivare ad una definizione aperta dello stesso, il tutto cercando di proporne una lettura interdisciplinare. Infine si tematizzer� il problema dei luoghi abbandonati analizzandone le cause ed evidenziandone la problematicit� nell?epoca attuale, per poi arrivare ad una tassonomia dell?abbandono legata ad alcuni casi territoriali emblematici.
EL NOMOS DE LA REVUELTA: LA HUELGA ESTUDIANTIL DE LA UNIVERSIDAD DE PUERTO RICO (2010)
Creators: name: PEREZ LIZASUAIN, CESAR J
Publisher: name: Universit� degli Studi di Milano
Year: 2015

description: El objetivo de la presente investigaci�n es auscultar y problematizar sobre la capacidad del movimiento estudiantil, en el contexto de la huelga de estudiantes de 2010 en la Universidad de Puerto Rico, de producir una normatividad aut�noma m�s all� de la jur�dica para garantizar su propio funcionamiento y durabilidad. Se trata de explorar la producci�n normativa aut�noma al margen del Estado como modo alternativo de regulaci�n social, como una experiencia concreta de ese pluralismo jur�dico y normativo del que nos habla Jean Carbonnier (1974), entre otros, como objeto de investigaci�n y estudio fundamental de la sociolog�a jur�dica en estos tiempos. En el caso espec�fico objeto de nuestro estudio, �ste corresponde a un periodo �lgido de proliferaci�n de revueltas estudiantiles y juveniles a nivel internacional que se expresaran, adem�s de Puerto Rico en lugares como Chile, California, Nueva York, Quebec, Grecia, Egipto, Espa�a, Estados Unidos, entre otros.
Victor De Herder (Denderwindeke 1901 - Oostakker 1943) : het bewogen leven van een opgeëiste (1916), lid van het communistisch verzet (1941-1943) en gefusilleerd gijzelaar
Creators: name: Vande Winkel, Georges
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 430399
subject: Historical studies not elsewhere classified

description: Victor De Herder kende een bewogen leven. Tijdens WO I werd hij als zestienjarige in 1917 opgeëist door de Duitsers voor werk in het buitenland. Terug in 1918 vervulde hij eerst legerdienst en ging vervolgens, zoals zovelen uit de Denderstreek, werken in de koolmijnen in Wallonië (La Louvière). Daar leerde hij de Belgische Communistische Partij kennen en hij was in 1938 zelfs kandidaat gemeenteraadslid te Denderwindeke voor deze partij. Tijdens WO II was hij vanaf 1941 actief in het gewapende communistische partizanenleger. Op 11 juni 1943 werd hij, na verraad, opgepakt door de Duitsers en naar de gevangenis in Gent gebracht. Hij was gehuwd en vader van twee nog jonge kinderen. Als vergelding voor sabotagedaden van het verzet werd hij samen met 28 andere gijzelaars zonder vorm van proces op 30 november 1943 gefusilleerd te Oostakker en er anoniem begraven. In september 1944 werd zijn lichaam opgegraven en herbegraven te Denderwindeke. Veel officiële erkenning als oorlogsverzetsheld kreeg hij daarna niet. Dat heeft de auteur, zelf Denderwindekenaar, met dit artikel willen rechtzetten.
Mechanismus der Gravitation
Creators: name: Shalabi, Fuad
Publisher: name: Zenodo
Year: 2023
Subjects: Gravitation, Schwarzschildmetrik, Quantengravitation, ART, GR, Allgemeine Relativitätstheorie, Relativitätstheorie, Mechanismus

description: Die einzige Hypothese oder Theorie, die den Mechanismus der Gravitation beschreiben kann. Ebenso wird die Quantengravitation direkt mitbeschrieben.
Laser damage helps the eavesdropper in quantum cryptography
Creators: name: Bugge, Audun N.
name: Sauge, Sebastien
name: Ghazali, Aina M. M.
name: Skaar, Johannes
name: Lydersen, Lars
name: Makarov, Vadim
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We propose a class of attacks on quantum key distribution (QKD) systems where an eavesdropper actively engineers new loopholes by using damaging laser illumination to permanently change properties of system components. This can turn a perfect QKD system into a completely insecure system. A proof-of-principle experiment performed on an avalanche photodiode-based detector shows that laser damage can be used to create loopholes. After about 1 W illumination, the detectors' dark count rate reduces 2 to 5 times, permanently improving single-photon counting performance. After about 1.5 W, the detectors switch permanently into the linear photodetection mode and become completely insecure for QKD applications.
description: Extended and improved discussions. This version is published in Phys. Rev. Lett. 5 pages, 4 figures
CALCIUM HANDLING IN MYOGENIC PROGENITORS AND SKELETAL MYOBLASTS: THE ROLE OF CD20
Creators: name: PAROLINI, DANIELE
Publisher: name: Universit� degli Studi di Milano
Year: 2013

description: The calcium ion plays an essential role in the physiology of all living cells. Accordingly, multiple mechanisms contribute to the precise control of its intracellular concentration ([Ca2+]i). Particularly in skeletal muscle, the efficient regulation of cytosolic Ca2+ is crucial for tissue functionality and impairment of Ca2+ homeostasis has been shown to contribute to the etiology of muscular disorders such as Duchenne muscular dystrophy (DMD). Although the impairment of Ca2+ homeostasis affecting dystrophic muscular cells has been extensively reported, the pathways involved in calcium-release and the role of store-operated Ca2+ channels in dystrophic myogenic progenitors were not investigated before. Among the heterogeneous population of circulating hematopoietic and endothelial progenitors, we identified a subpopulation of CD133+ cells displaying myogenic properties. Interestingly, expression of the B-cell marker CD20 was observed in blood-derived CD133+ stem cells. Among the scarce available data about the biological role of the membrane protein CD20, there are some evidences of its involvement in the regulation of intracellular calcium concentration ([Ca2+]i). Here, we show that a CD20-related pathway leading to an increase of cytosolic calcium is differently activated in normal and dystrophic blood-derived CD133+ stem cells, supporting the assumption of a CD20-related calcium impairment affecting dystrophic cells. Although CD20 can modulate cytosolic calcium through a specific signaling pathway, other studies demonstrated its association with lipid raft domains of the plasma membrane, where it probably functions directly as a store-operated Ca2+ channel. Recent works indicated that store-operated Ca2+ entry (SOCE) plays a central role in skeletal muscle physiology and development, but there remain a number of unresolved issues relating to SOCE modulation in this tissue. That being so, and considering that blood and muscle share common mesodermic origins, we were prompted to investigate whether CD20 contributes to calcium handling in committed muscular cells. Expression of CD20 was observed in skeletal muscle, displaying a membrane localization in myoblasts and adult muscle fibers. Additionally, we showed that inhibition of CD20 resulted in specific impairment of SOCE in C2C12 myoblasts. Together, reported findings contributed to identify deregulated pathways affecting dystrophic stem cells and potentially involved in DMD pathology. Moreover, our results suggested that functional CD20 is required for SOCE to consistently occur in C2C12 myoblasts, providing a novel insight to improve the understanding of store-operated Ca2+ entry regulation in skeletal muscle.
Synthesis, Characterisation and In Vitro Antibacterial Study of Coumarin- Indole Hydrazones
Creators: name: Pangal, Anees
Publisher: name: figshare
Year: 2022
Subjects: subject: Organic Chemistry
subject: FOS: Chemical sciences

description: Synthesis, Characterisation and In Vitro Antibacterial Study of Coumarin-Indole Hydrazones
Spacetime emergence via holographic RG flow from incompressible Navier-Stokes at the horizon
Creators: name: Kuperstein, Stanislav
name: Mukhopadhyay, Ayan
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We show that holographic RG flow can be defined precisely such that it corresponds to emergence of spacetime. We consider the case of pure Einstein's gravity with a negative cosmological constant in the dual hydrodynamic regime. The holographic RG flow is a system of first order differential equations for radial evolution of the energy-momentum tensor and the variables which parametrize it's phenomenological form on hypersurfaces in a foliation. The RG flow can be constructed without explicit knowledge of the bulk metric provided the hypersurface foliation is of a special kind. The bulk metric can be reconstructed once the RG flow equations are solved. We show that the full spacetime can be determined from the RG flow by requiring that the horizon fluid is a fixed point in a certain scaling limit leading to the non-relativistic incompressible Navier-Stokes dynamics. This restricts the near-horizon forms of all transport coefficients, which are thus determined independently of their asymptotic values and the RG flow can be solved uniquely. We are therefore able to recover the known boundary values of almost all transport coefficients at the first and second orders in the derivative expansion. We conjecture that the complete characterisation of the general holographic RG flow, including the choice of counterterms, might be determined from the hydrodynamic regime.
description: 61 pages, 2 figures, 5 tables; matches with JHEP version
Canonical versus noncanonical equilibration dynamics of open quantum systems
Creators: name: Yang, Chun-Jie
name: An, Jun-Hong
name: Luo, Hong-Gang
name: Li, Yading
name: Oh, C. H.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In statistical mechanics, any quantum system in equilibrium with its weakly coupled reservoir is described by a canonical state at the same temperature as the reservoir. Here, by studying the equilibration dynamics of a harmonic oscillator interacting with a reservoir, we evaluate microscopically the condition under which the equilibration to a canonical state is valid. It is revealed that the non-Markovian effect and the availability of a stationary state of the total system play a profound role in the equilibration. In the Markovian limit, the conventional canonical state can be recovered. In the non-Markovian regime, when the stationary state is absent, the system equilibrates to a generalized canonical state at an effective temperature; whenever the stationary state is present, the equilibrium state of the system cannot be described by any canonical state anymore. Our finding of the physical condition on such noncanonical equilibration might have significant impact on statistical physics. A physical scheme based on circuit QED is proposed to test our results.
Towards longitudinal mapping of transportation infrastructure with spatio-temporal generative modeling
Creators: name: Singla, Ayush
Publisher: name: Stanford Digital Repository
Year: 2023
Subjects: subject: Super-Resolution
subject: Remote-sensing images
subject: Transportation--Planning
subject: Generative Adversarial Networks (GANs)
subject: Climate change mitigation
subject: Artificial intelligence--Industrial applications
subject: Machine learning--Industrial applications

description: This work proposes a super-resolution pipeline to generate high resolution satellite imagery for a preferred point in time. We use a spatio-temporal generative model to perform super-resolution of low spatial resolution (LR) satellite imagery from the preferred time, conditioning on high resolution imagery (HR) from another time to generate HR satellite imagery for the preferred time. To train the spatio-temporal generative model, we curated the largest-ever super-resolution dataset of satellite imagery at sub-meter resolution, consisting of over 96, 000 image triplets. We present a proof-of-concept of this approach by evaluating the performance of our generated imagery on a sidewalk segmentation task. Our results demonstrate that our pipeline generates high spatial resolution images that are structurally similar to the original high resolution satellite imagery while accurately reproducing the style and content of the input low resolution imagery. Furthermore, our generated imagery outperforms LR imagery in the sidewalk segmentation task, providing compelling evidence for the utility and effectiveness of our approach. Since LR satellite imagery is available longitudinally at large geographical scale, researchers can use our pipeline to generate HR satellite imagery for their preferred time and location. Future work could leverage generated longitudinally available HR satellite imagery to longitudinally map transportation networks to inform and evaluate transportation planning.
DESIGN OF CHIMERIC ION CHANNELS TO MONITOR CAMP-INDUCED CONFORMATIONAL CHANGES AND DYNAMICS
Creators: name: INTROINI, BIANCA
Publisher: name: Universit� degli Studi di Milano
Year: 2020

description: Hyperpolarization-activated cyclic nucleotide-gated (HCN1-4) channels are the molecular correlate of Ih (or If) current, which plays a key role in the control of neuronal and cardiac rhythmicity. HCNs are activated by the hyperpolarization of the membrane potential and further regulated by the direct binding of cyclic AMP (cAMP) to the cytoplasmic Cyclic Nucleotide Binding Domain (CNBD). cAMP binding determines the removal of the autoinhibitory action exerted by the CNBD on the pore opening and causes conformational changes that propagate from the CNBD to the pore through the C-linker, increasing channel open probability and speeding activation kinetics. cAMP modulation of HCN controls rhythmicity and excitability at cardiac and neuronal level and pain perception. Thus, in order to understand several physiological functions, as well as diseases affecting both the cardiac and neuronal system, a detailed description of the cAMP-induced conformational changes is required. Moreover, functional studies indicate that cAMP binding to the CNBD induces the transition of the C-terminal domains, from dimer of dimer to tetramer and that this transition is driven by the movements of the C-linker. The goal of this work is to describe the propagation of the movements through the C-linker to the pore. To this end, I have applied spectroscopic techniques, such as Electron Paramagnetic Resonance (EPR) and Double Electron-Electron Resonance (DEER) to study dynamic changes in the structure of the purified and labelled protein. First, I constructed a chimeric channel by fusing the C-linker/CNBD of human HCN4 to the prokaryotic pore domain of KcsA. This protein has the advantage that can be produced and easily purified in E. coli. Isothermal Titration Calorimetry (ITC) and Differential Scanning Calorimetry (DSC) measurements demonstrated that the purified chimera is able to bind cAMP. Particularly, ITC gave a Kd value of 1.7 ?M, which agrees with the one previously published for the isolated C-linker/CNBD fragment of HCN4. Moreover, the rescue of a K+-uptake deficient E. coli strain demonstrated that the chimeric channel is able to conduct a K+ ions flow. EPR-DEER experiments performed on the chimera revealed that the binding of cAMP to the CNBD domain causes clear conformational changes in the C-terminal region, which transits from a dimer of dimers conformation to a 4-fold symmetrical gating ring. These data confirm previous biochemical and functional indication obtained on the full-length channel and give further details on the direction and the extent of subunit displacement occurring during the conformational transition. The transition of the channel from a dimer of dimer to a tetrameric configuration of the cytosolic domain might reflect a pre-conditioning state for cAMP action on channel gating and partly explains the agonist activity exerted by cAMP on channel kinetics and open probability.
Boundary reconstruction for the broken ray transform
Creators: name: Ilmavirta, Joonas
Publisher: name: arXiv
Year: 2013
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C65, 78A05 (Primary), 35R30, 58J32 (Secondary)

description: We reduce boundary determination of an unknown function and its normal derivatives from the (possibly weighted and attenuated) broken ray data to the injectivity of certain geodesic ray transforms on the boundary. For determination of the values of the function itself we obtain the usual geodesic ray transform, but for derivatives this transform has to be weighted by powers of the second fundamental form. The problem studied here is related to Calderón's problem with partial data.
description: 23 pages, 1 figure; final version
Epistemic Updates on Algebras
Creators: name: Kurz, Alexander A
name: Palmigiano, Alessandra A
Publisher: name: arXiv
Year: 2013
Subjects: subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences

description: We develop the mathematical theory of epistemic updates with the tools of duality theory. We focus on the Logic of Epistemic Actions and Knowledge (EAK), introduced by Baltag-Moss- Solecki, without the common knowledge operator. We dually characterize the product update construction of EAK as a certain construction transforming the complex algebras associated with the given model into the complex algebra associated with the updated model. This dual characterization naturally generalizes to much wider classes of algebras, which include, but are not limited to, arbitrary BAOs and arbitrary modal expansions of Heyting algebras (HAOs). As an application of this dual characterization, we axiomatize the intuitionistic analogue of the logic of epistemic knowledge and actions, which we refer to as IEAK, prove soundness and completeness of IEAK w.r.t. both algebraic and relational models, and illustrate how IEAK encodes the reasoning of agents in a concrete epistemic scenario.
Spin pumping damping and magnetic proximity effect in Pd and Pt spin-sink layers
Creators: name: Caminale, M.
name: Ghosh, A.
name: Auffret, S.
name: Ebels, U.
name: Ollefs, K.
name: Wilhelm, F.
name: Rogalev, A.
name: Bailey, W. E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigated the spin pumping damping contributed by paramagnetic layers (Pd, Pt) in both direct and indirect contact with ferromagnetic Ni$_{81}$Fe$_{19}$ films. We find a nearly linear dependence of the interface-related Gilbert damping enhancement $Δα$ on the heavy-metal spin-sink layer thicknesses t$_\textrm{N}$ in direct-contact Ni$_{81}$Fe$_{19}$/(Pd, Pt) junctions, whereas an exponential dependence is observed when Ni$_{81}$Fe$_{19}$ and (Pd, Pt) are separated by \unit[3]{nm} Cu. We attribute the quasi-linear thickness dependence to the presence of induced moments in Pt, Pd near the interface with Ni$_{81}$Fe$_{19}$, quantified using X-ray magnetic circular dichroism (XMCD) measurements. Our results show that the scattering of pure spin current is configuration-dependent in these systems and cannot be described by a single characteristic length.
Zero-Error Capacity of a Class of Timing Channels
Creators: name: Kovačević, Mladen
name: Popovski, Petar
Publisher: name: arXiv
Year: 2013
Subjects: subject: Information Theory (cs.IT)
subject: Discrete Mathematics (cs.DM)
subject: FOS: Computer and information sciences
subject: 94B25, 94A40, 94A24, 68R05, 65Q30

description: We analyze the problem of zero-error communication through timing channels that can be interpreted as discrete-time queues with bounded waiting times. The channel model includes the following assumptions: 1) Time is slotted, 2) at most $ N $ "particles" are sent in each time slot, 3) every particle is delayed in the channel for a number of slots chosen randomly from the set $ \{0, 1, \ldots, K\} $, and 4) the particles are identical. It is shown that the zero-error capacity of this channel is $ \log r $, where $ r $ is the unique positive real root of the polynomial $ x^{K+1} - x^{K} - N $. Capacity-achieving codes are explicitly constructed, and a linear-time decoding algorithm for these codes devised. In the particular case $ N = 1 $, $ K = 1 $, the capacity is equal to $ \log ϕ$, where $ ϕ= (1 + \sqrt{5}) / 2 $ is the golden ratio, and the constructed codes give another interpretation of the Fibonacci sequence.
description: 5 pages (double-column), 3 figures. v3: Section IV.1 from v2 is replaced with Remark 1, and Section IV.2 is removed. Accepted for publication in IEEE Transactions on Information Theory
DYNAMICS AND CHARACTERIZATION OF QUANTUM SYSTEMS INTERACTING WITH CLASSICAL NOISE
Creators: name: ROSSI, MATTEO
Publisher: name: Universit� degli Studi di Milano
Year: 2017

description: The goal of research in quantum information is to investigate how quantum systems can be used to store, transmit and elaborate information and how the non-classical nature of their correlations allows defining protocols that outperform their classical counterparts. Despite of the many progresses, both theoretical and experimental, made in this field in the latest decades, many challenges lie ahead for practical implementations of quantum technologies. One of the most important ones is caused by the unavoidable interaction of quantum systems with their surroundings: The coupling to the environment is generally detrimental to the quantum information contained in the system as the system undergoes decoherence. In the quest for quantum technologies, it is fundamental to overcome the problem of decoherence and loss of information. Different physical implementations of qubits, such as superconducting and solid-state devices, are affected by the interaction with the environment in a way that can be described in terms of classical stochastic noise. The classical noise model can also be used to give an approximate, sometimes equivalent, description of full quantum models of system-environment interaction. This thesis contains my personal contribution to the study of the dynamics of discrete-variable quantum systems affected by classical noise. It covers in particular single- and two-qubit systems affected by Gaussian and non-Gaussian noise. It also discusses the dynamics of a quantum walk affected by spatially correlated classical noise. Analytical solutions for particular forms of noise and interactions, and a general numerical method for simulation of the dynamics are presented. Moreover, the thesis presents the experimental implementation of a quantum optical simulator of noisy dynamics of single-qubit systems. Finally, the use of quantum systems as probes of the spectral properties of large classical environments is discussed, showing that entanglement is a resource for improvements in the precision of the estimation.
From sparse to dense and from assortative to disassortative in online social networks
Creators: name: Li, Menghui
name: Guan, Shuguang
name: Wu, Chensheng
name: Gong, Xiaofeng
name: Li, Kun
name: Wu, Jinshan
name: Di, Zengru
name: Lai, Choy-Heng
Publisher: name: arXiv
Year: 2013
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Social and Information Networks (cs.SI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Inspired by the analysis of several empirical online social networks, we propose a simple reaction-diffusion-like coevolving model, in which individuals are activated to create links based on their states, influenced by local dynamics and their own intention. It is shown that the model can reproduce the remarkable properties observed in empirical online social networks; in particular, the assortative coefficients are neutral or negative, and the power law exponents are smaller than 2. Moreover, we demonstrate that, under appropriate conditions, the model network naturally makes transition(s) from assortative to disassortative, and from sparse to dense in their characteristics. The model is useful in understanding the formation and evolution of online social networks.
description: 10 pages, 7 figures and 2 tables
POWER AND ENDURANCE CYCLING PERFORMANCE: THE KINESIO-TAPING APPLICATION AND THE INFRARED THERMOGRAPHIC ASSESSMENT OF MUSCULAR EFFORT
Creators: name: TRECROCI, ATHOS
Publisher: name: Universit� degli Studi di Milano
Year: 2016

description: The present thesis has been written incorporating two different research lines involving the use of kinesio taping (KT) and the infrared thermography technology (IRT) in the field of physical exercise and performance analysis. Both topics are related to the involvement of cycling pattern in a laboratory environment assessing the role of skin behavior in terms of promotion (indirect) of muscle contraction and thermoregulation b KT and IRT, respectively. The aim of this study was to determine whether the use of kinesio taping (KT) was helpful in increasing maximal-intensity cycling exercise. Sixteen active healthy subjects were enrolled in a randomized placebo, repeated measures design. All subjects were tested on a cycle ergometer under three conditions: without taping, taping along anterior thigh muscles, and sham taping across the same muscle groups. Results showed a significant increase in peak power output and total work after the longitudinally application compared to the condition with no tape applied (p<0.05). No significant difference was found between the two modes of application. Our findings indicated that the tactile stimulation of KT applied longitudinally provided positive effects during a sprint cycling performance in healthy and active subject. The aim of the second study was to assess skin temperature and pedaling imbalance in response to maximal incremental exercise in elite cyclists. Ten competitive elite cyclists underwent a cycling incremental test to exhaustion. Kinetic variables, such as peak crank torque and asymmetric index (AI) were taken into account for propulsion and recovery phases at the beginning and at the end of the test. Thermal images of the thighs? frontal surfaces (captured by infrared thermography, IRT) were recorded before, immediately after and 3 and 6 min after the end of exercise. Cyclists showed a certain degree of symmetry in skin temperature presenting a significant reduction at the exhaustion point for both lower limb. As regard bilateral peak crank torques, a significant interaction was found in the propulsive phase across the time, even though the AI was < 10%. However, in the recovery phase, a remarkable value of AI > 10% was reported. Elite competitive cyclists showed bilateral asymmetry between propulsive peak crank torques in a state of extreme fatigue (i.e. at the exhaustion) with a low value of AI. On the other hand, skin temperature dynamics, measured by IRT, presented a certain degree of symmetry in both right and left limb in response to maximal incremental test. Future studies are need to determine the effective usefulness of IRT to monitor bilateral force asymmetry.
L'OUVERTURE D'OPERA ITALIANA DALLA MORTE DI MOZART ALLA RESTAURAZIONE - TECNICHE FORMULARI E INNOVAZIONI FORMALI
Creators: name: PERATA, ROBERTO
Publisher: name: Universit� degli Studi di Milano
Year: 2016

description: The operatic repertory composed between the death of Mozart, in 1791, and the consecration of Rossini, around 1815, is one of the less known to professional musicians of our day and one of the less performed in modern opera houses. A period of deep transformation, in which social, political and economical changes lead to significant innovations in the world of Italian opera and its management as well, establishing new methods and techniques in music composition, with a growing role played by conventions and formulas. Starting from a famous essay by Philip Gossett, this research investigates the evolution of a specific form within the operatic world - the overture - allowing to focus on music issues rather than on the libretti. After a historical recognition on composers and titles that were actually performed in major Italian opera houses during the chosen period, and on the theoretical background provided by composition treatises of the second half of the 18th and early 19th centuries, a corpus of about one hundred thirty overtures by thirty-seven composers is analysed with a double-eyed look -both historical and modern-, in search of recurring patterns and structures, but also of personal solutions and novelties. Comparative study proves that the overture went through a much larger variety of possibilities than its usual description -both in ancient and modern sources- as a "sonata form without development" allows to understand: although forms not related to the sonata are rare, a certain amount of choices were available (number of themes, transition paths, development, crescendo, etc.). While carrying out a much more specific and detailed morphology of the overture, tracing its evolution through some twenty-five years also allows re-establishing historical truth over legendary tools such as the Rossini-crescendo, and to reconstruct the "common language" of Italian opera at the time, making a better understanding of the contributions of each composer possible. This should lead to a new comprehension of authorship, freed from the modern attitude of "genius-at-work", and re-inserted in its historical context of a musical res publica whose forms, tonal paths, compositional formulas, and orchestral solutions, were still common to all its citizens.
ON THE NATURE OF THE PYGMY DIPOLE RESONANCE IN 124SN VIA INELASTIC SCATTERING OF 17O
Creators: name: PELLEGRI, LUNA
Publisher: name: Universit� degli Studi di Milano
Year: 2014

description: Giant resonances are fundamental modes of excitations at high frequency, corresponding to shape oscillations around the equilibrium of the nuclear system. Their study over the years has provided useful information on nuclear structure and on the effective nucleon?nucleon interaction. In particular, the understanding of the electric-dipole response around the binding energy is presently attracting considerable interest, since the dipole strength distribution in that region affects the reaction rates in astrophysical scenarios. Moreover, it provides information on the neutron skin and thus on the symmetry energy of the equation of state. This concentration of electric dipole strength around the particle threshold is commonly denoted as Pygmy Dipole Resonance (PDR) and it is caused by the oscillation of the neutron skin against the inert proton-neutron core. From the experimental point of view, by comparing results of photon-scattering and a scattering experiments, a clear selectivity in the population of these ?pygmy? states has been observed. These findings have called for additional high resolution investigation, by studying the ?-decay with advanced Ge array (such as AGATA), making use of different probes to excite the resonance states, as heavy ions. For this reason, an experiment aimed at the study of the ?-decay from high-lying bound and unbound states in several nuclei (124Sn, 208Pb and 140Ce) has been performed at Legnaro National Laboratories (LNL - INFN). The giant resonance modes have been excited by inelastic scattering of 17O beam at 20 MeV/u. The analysis described in this thesis has been focused on the studies of the Pygmy Dipole Resonance in the 124Sn nucleus.
Off-shell effects on the interaction of Nambu-Goldstone bosons and $D$ mesons
Creators: name: Altenbuchinger, M.
name: Geng, Li-Sheng
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The Bethe-Salpeter equation in unitarized chiral perturbation theory is usually solved with the so-called on-shell approximation. The underlying argument is that the off-shell effects can be absorbed by the corresponding coupling constants and physical masses, which has been corroborated by the success of unitarized chiral perturbation theory in describing a variety of physical phenomena. Such an approximation needs to be scrutinized when applied to study the light-quark mass evolution of physical observables, as routinely performed nowadays. In the present work, we propose to solve the Bethe-Salpeter equation with the full off-shell terms of the chiral potentials and apply this formalism to the description of the latest $n_f=2+1$ lattice QCD (LQCD) data on the scattering lengths of Nambu-Goldstone bosons off $D$ mesons. It is shown that the LQCD data can be better described in this formalism than in the widely used on-shell approximation. On the other hand, no qualitative difference between the on-shell and off-shell approaches is observed for the light-quark mass evolution of the scattering lengths, given the limited LQCD data and their relatively large uncertainties. We also show that the light-quark mass dependence of the $D^*_{s0}(2317)$ remains essentially the same in both approaches.
description: An appendix added to illustrate how the Bethe-Salpeter equation with a full-off shell potential is solved. To appear in Physical Review D
Innovation marketing au service de la résilience organisationnelle pendant la crise du COVID-19 : Étude exploratoire auprès des restaurants en Tunisie
Creators: name: BOULABIAR MEJDOUB, Narjess
name: FEZZANI, Imene
Publisher: name: Zenodo
Year: 2024
Subjects: Innovation marketing ; résilience organisationnelle ; COVID-19 ; analyse de contenu thématique ; NVivo.

description: Le secteur de la restauration en Tunisie a été gravement impacté par la crise du COVID-19. Cette crise sans précédent a obligé certains établissements de fermer complètement leurs portes. D’autres ont réussi à adopter des pratiques innovantes pour s’adapter à cette nouvelle normalité. L’objectif de cette étude est d’explorer ces différentes pratiques marketing innovantes adoptées par les restaurants en Tunisie contribuant à leur résilience durant la crise. Par le biais d’entretiens semi-directifs avec les professionnels de la restauration, nous avons pu obtenir des avis réels sur leur vécu après cette pandémie. Au moyen de logiciel NVivo 10, l’analyse thématique nous a permis de dégager de nouvelles pratiques MKG innovantes touchant essentiellement la communication (recours aux influenceurs digitaux et la communication assurée par leurs partenaires), prix (augmentation des prix) et le produit (changement important de recettes ainsi que l’emballage). Cette recherche peut enrichir la littérature existante sur l’innovation marketing et la résilience organisationnelle dans le contexte de crise. Ces résultats ont contribué également à dégager des recommandations managériales cruciales pour une meilleure résilience des restaurants.
Quantifying the effects of polar lipid proportions on the stability of model tear films
Creators: name: Xia, Vincent
Publisher: name: Stanford Digital Repository
Year: 2022
Subjects: subject: Dry eye syndromes
subject: Tear film
subject: Interfacial science
subject: Rheology (Biology)
subject: Interfacial lipid layer

description: Dry eye Disease (DED) is one of the most widespread ocular surface disorders across the world and is thought to affect hundreds of millions of people worldwide, including costs of over $50 billion annually to the United States alone. However, despite DED’s widespread prevalence, there are very few effective clinical treatments for the syndrome, in part due to the complexity of the thin liquid coating – i.e. tear film – over the surface of the eye.

One hallmark of DED is premature destabilization of the tear film, which can be caused by many different mechanisms. Although we have an extensive knowledge of the various underlying biological causes for DED, we know relatively little about the resulting physical processes that lead to DED, which makes it difficult to design targeted treatment options.

Particularly little is known about tear film lipids – which are thought to sit on the surface of the tear film. Deficiencies in certain types of polar lipids are thought to be linked to an increased risk of DED, but we do not yet understand why this is the case. Finally, despite a wide array of literature on lipid chemistry, structure, and rheology, no clear link has been made yet between lipid composition on the surface of the eye and the severity of DED.

To address these deficiencies in knowledge, this thesis aims to improve our understanding of the role of polar lipids in the stability of the tear film. We test the stability of model tear films supplemented with varying amounts of the phospholipid “dipalmitoyl phosphatidylcholine” (DPPC) and the wax ester “stearyl stearate,” both of which are comparable to common lipids found natively in the eye. We find that model tear films can be stabilized by both DPPC and SS, likely through a combination of lipid-specific physical mechanisms. When model tear films are created with combined DPPC and SS lipid layers, we find that large increases in the DPPC composition can increase the stability of the model films. Finally, we find that mixed lipid layers have physical properties that differ from the pure lipid components, implying that a more nuanced understanding of lipid interactions is required.

Altogether, this data indicates that large changes to lipid compositions in the tear film could play a role in reducing tear film stability, as is thought to occur in patients with DED. However, a more advanced understanding of multi-component lipid layers is necessary before well-targeted therapeutics can be developed. DED remains a pressing health and societal problem, but this work improves our understanding of the lipid layer of the tear film and provides a basis for future research on the role of lipids in dry eye disease.
Additional file 1 of COVID-19 surveillance in the Flemish school system: development of systematic data collection within the public health school system and descriptive analysis of cases reported between October 2020 and June 2021
Creators: name: Merckx, Joanna
name: Crèvecoeur, Jonas
name: Proesmans, Kristiaan
name: Hammami, Naïma
name: Denys, Hilde
name: Hens, Niel
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 1: Supplement Figure 1. Flow chart Surveillance network and Study sample. Supplement Figure 2. Surveillance system data flow and components. Supplement Figure 3. Relative difference in reported COVID-19 cases per week per 100,000 by grade relative to grade 7–8. Supplement Figure 4. Evolution number of confirmed SARS-CoV-2 PCR and antigen tests (left Y-axis) and positive tests (right Y-axis) in children 6-18 years old and in adults 19-79 years old in Flanders. Supplement Figure 5. SARS-CoV-2 test positivity rate adults 19-80 compared to children 6-18 in the community.