cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Coalitional Games for Distributed Collaborative Spectrum Sensing in Cognitive Radio Networks
Creators: name: Saad, Walid
name: Han, Zhu
name: Debbah, Merouane
name: Hjørungnes, Are
name: Başar, Tamer
Publisher: name: arXiv
Year: 2009
Subjects: subject: Computer Science and Game Theory (cs.GT)
subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Collaborative spectrum sensing among secondary users (SUs) in cognitive networks is shown to yield a significant performance improvement. However, there exists an inherent trade off between the gains in terms of probability of detection of the primary user (PU) and the costs in terms of false alarm probability. In this paper, we study the impact of this trade off on the topology and the dynamics of a network of SUs seeking to reduce the interference on the PU through collaborative sensing. Moreover, while existing literature mainly focused on centralized solutions for collaborative sensing, we propose distributed collaboration strategies through game theory. We model the problem as a non-transferable coalitional game, and propose a distributed algorithm for coalition formation through simple merge and split rules. Through the proposed algorithm, SUs can autonomously collaborate and self-organize into disjoint independent coalitions, while maximizing their detection probability taking into account the cooperation costs (in terms of false alarm). We study the stability of the resulting network structure, and show that a maximum number of SUs per formed coalition exists for the proposed utility model. Simulation results show that the proposed algorithm allows a reduction of up to 86.6% of the average missing probability per SU (probability of missing the detection of the PU) relative to the non-cooperative case, while maintaining a certain false alarm level. In addition, through simulations, we compare the performance of the proposed distributed solution with respect to an optimal centralized solution that minimizes the average missing probability per SU. Finally, the results also show how the proposed algorithm autonomously adapts the network topology to environmental changes such as mobility.
description: in proceedings of IEEE INFOCOM 2009
title: The Effect of Seasonal Cattle Grazing On California Bighorn Sheep Habitat Use
Creators: name: Steinkamp, Melanie J.
Publisher: name: Utah State University
Year: 1990

description: The effect of seasonal cattle grazing on a newly reintroduced vii population of California bighorn sheep (Ovis canadensis californiana) in Big Cottonwood Canyon, Idaho, was studied. The hypothesis that bighorn sheep avoid cattle was tested. The issue of avoidance between bighorn sheep and livestock is arguable. Some studies have found that bighorn sheep avoid cattle while others have found no response of bighorn sheep to cattle.
Evidence was found to document the avoidance of cattle by bighorn sheep. The size of the bighorn's home range and core area decreased with the movement of cattle into areas of high bighorn use. As cattle were moved into bighorn core areas, sheep responded by relocating. Bighorn sheep decreased their distance to escape terrain as cattle moved closer. The level and location of human disturbance on the study area did not have any effect on bighorn sheep movements or how sheep used the habitat.
The severity of response observed is in marked contrast with the response of established bighorn populations to cattle. I suggest that newly reintroduced bighorn sheep are extremely sensitive to disturbance as a result of relocation trauma. Sensitivity may diminish over time.
title: Secondary Electron Production and Transport Mechanisms By Measurement of Angle-Energy Resolved Cross Sections of Secondary and Backscattered Electron Emission from Gold
Creators: name: Kite, Jason T.
Publisher: name: Utah State University
Year: 2006

description: This work provides information about interactions that produce emitted electrons from polycrystalline Au. Emission energy- angle- dependent electron spectra from a polycrystalline Au surface have been measured at several incident electron beam energies. The range of incident energies (~100 eV to 2500 eV) extends from below the first crossover energy, through Emaxo, to above the second crossover energy. The conventional distinction between secondary electrons (SE) (50 eV) is found to be crude for the investigation of electron yields using these energy- angle- resolved measurements. A more realistic boundary occurs at the local minima of the emission spectra; this feature is studied as a function of incident energy and emission angle. In addition, deviations observed in the angular resolved emission spectra from isotropic behavior suggests that residual signatures exist in the emission spectra resulting from the anisotropic SE production mechanisms. Based on the disparity between our observations and recent modeling of the emission spectra, the most recent theory and simulation studies may overestimate the occurrence of randomizing collisions of scattered secondary electrons in the model of the transport mechanism. Finally, description of extensive modification to instrumental and analysis methods are described, and their effectiveness is evaluated.
title: Measurement of Charge Storage Decay Time and Resistivity of Spacecraft Insulators
Creators: name: Swaminathan, Prasanna V.
Publisher: name: Utah State University
Year: 2004

description: Insulators used in the construction of spacecraft are irradiated with high-energy electrons in the space environment and this sometimes causes the insulators to charge to very high voltages. Such charged insulators can generate spontaneous electric partial-discharge pulses of the order of mA to tens of A. These pulses sometimes last enough time to destroy the expensive micro-circuitry present in the spacecraft. In evaluating the threat to the spacecraft due to these discharges, calculation of the resistivity becomes a critical parameter since it determines how accumulated charge will distribute across the spacecraft and how rapidly charge imbalance will dissipate. So far, resistivity values for the insulators for spacecraft applications have been simply imported from tabulated results measured using standard American Society for Testing and Materials (ASTM) and International Electro-technical Commission (IEC) methods. This thesis work provides the details of the charge storage method which has been found to be more appropriate in calculating the resistivity of spacecraft insulators by emulating the space environment better. This method is based on the concept that the resistivity is better measured as the decay of the charge deposited on the surface of an insulator, rather than by the flow of current across two electrodes around the sample which is the case with the classical method of measurements.
From the results obtained from the charge storage method, it has been found that the ASTM resistivity values for thin film insulating spacecraft materials have been found to under-predict charge transport values applicable to many spacecraft charging problems, by 10 to 104 times. The charge storage method has only one side of the insulator in vacuum exposed to charged particles, light and plasma, with a metal electrode attached to the other side of the insulator. The chamber for measuring the charge storage decay has been designed with the capability to measure 32 samples simultaneously. The details of the apparatus, instrumentation, test methods, data acquisition methods, and data analysis for measuring resistivity of the spacecraft insulators are given here. Details about the vacuum environment, sample mounting, isolation of the samples, charging of the samples, measurement of the surface charge, rotary motion of the sample carousel, etc., are also given. The report also includes differences between the classical methods and the charge storage method both in terms instrumentation and methodology. The results obtained from both methods are tabulated showing the superiority of the charge storage method. Recommendations for future work are also included.
A model for the generation of localized transient Na+ elevations in vascular smooth muscle
Creators: name: Fameli, Nicola
name: Kuo, Kuo-Hsing
name: van Breemen, Cornelis
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Subcellular Processes (q-bio.SC)
subject: FOS: Biological sciences

description: We present a stochastic computational model to study the mechanism of signalling between a source and a target ionic transporter, both localized on the plasma membrane (PM) and in intracellular nanometre-scale subplasmalemmal signalling compartments comprising the PM, the sarcoplasmic reticulum (SR), Ca2+ and Na+ transporters, and the intervening cytosol. We refer to these compartments, sometimes called junctions, as cytoplasmic nanospaces or nanodomains. In the chain of events leading to Ca2+ influx for SR reloading during asynchronous Ca2+ waves in vascular smooth muscle (VSM), the physical and functional link between non-selective cation channels (NSCC) and Na+/Ca2+ exchangers (NCX) needs to be elucidated in view of two recent findings: the identification of the transient receptor potential canonical channel 6 (TRPC6) as a crucial NSCC in VSM cells and the observation of localized cytosolic [Na+] transients following purinergic stimulation of these cells. Having previously helped clarify the Ca2+ signalling step between NCX and SERCA behind SR Ca2+ refilling, this quantitative approach now allows us to model the upstream linkage of NSCC and NCX. We have implemented a random walk (RW) Monte Carlo (MC) model with simulations mimicking a Na+ diffusion process originating at the NSCC within PM-SR junctions. The model calculates the average [Na+] in the nanospace and also produces [Na+] profiles as a function of distance from the Na+ source. Our results highlight the necessity of a strategic juxtaposition of the relevant signalling channels as well as other physical structures within the nanospaces to permit adequate [Na+] build-up to provoke NCX reversal and Ca2+ influx to refill the SR.
description: 16 pages, 9 figures; an abridged version submitted for publication
How much can model organism phenotypes teach us about human disease? A study using ontologies and semantic machine learning
Creators: name: Alghamdi, Sarah
name: Schofield, Paul N.
name: Hoehndorf, Robert
Publisher: name: Zenodo
Year: 2022

description: The use of model organisms such as the mouse, fruitfly and zebrafish has been key in driving our understanding of human disease
 and its underlying biology for arguably a century, mainly due to the availability of genetic approaches. Many thousands of phenotypic
 annotations are now available for the major experimental model organism. Different organisms offer different strengths and weaknesses. When combining the phenotypic annotations across multiple model organisms, the strengths and weaknesses of each model may be compensated and coverage of the human genome can be optimised. Work over the past decade has demonstrated the power of cross-species phenotypic comparisons, and cross-species phenotype ontologies such as uPheno and the PhenomeNET ontology have been developed for this purpose. We report further development of the pan-species phenotype ontology PhenomeNet-Extended (Pheno-e), in particular including phenotypes from Schizosaccharomyces and Drosophila.
 We apply ontology embeddings and unsupervised machine learning to measure the semantic similarity between phenotypes resulting from loss-of-function mutations in model organisms and their associated phenotypes. We demonstrate the different contributions of each species' phenotypic data to the identification of human gene-disease associations and investigate the physiological and anatomical properties through which each species contributes.
THE INTERMEDIATE MASS HIGGS AT LHC
Creators: name: G. PANCHERI
Publisher: name: INFN Open Access Repository
Year: 1991

description: The search for the intermediate mass Higgs boson at the Large Hadron Collider is presented. Background processes and signals for the intermediate mass higgs, i.e. one for which mw≤mh≤2mw are discussed. it is pointed out that the search for Higgs bosons in the region around and just above the Z^0-mass puts very stringent limits on the detectors and that this region can be fully explored only with a very high luminosity option.
title: Measurements of the Secondary Electron Emission Properties of Insulators
Creators: name: Thomson, Clint D.
Publisher: name: Utah State University
Year: 2005

description: Measurements of the electron-induced electron emission properties of insulators are important to many applications including spacecraft charging, scanning electron microscopy, electron sources, and particle detection technology. However, these measurements are difficult to make since insulators can charge either negatively or positively under charge particle bombardment that in turn alters insulator emissions. In addition, incident electron bombardment can modify the conductivity, internal charge distribution, surface potential, and material structure in ways that are not well understood. A primary goal of this dissertation work has been to make consistent and accurate measurements of the uncharged electron yields for insulator materials using innovative instrumentation and techniques. Furthermore, this dissertation reports on the experimental work undertaken by our group to explore insulator charging rates as a function of incident electron energy and fluence. Specifically, these charging studies include: (i) the study of the effectiveness of charge-neutralization techniques such as low-energy electron flooding and UV light irradiation to dissipate both positive and negative surface potentials induced by incident electron irradiation, (ii) the exploration of several noncontacting methods used to determine insulator surface potentials and the insulator first and second crossover energies that are important in determining both the polarity and magnitude of spacecraft material potentials, (iii) the dynamical evolution of electron emissions and sample displacement current as a function of incident charge fluence and energy with ties to evolving surface potentials as an insulator reaches its current steady state condition, and (iv) the slow evolution of electron yields with continuous incident electron bombardment.
These charging data are explained in the context of available insulator charging models. Specific insulator materials tested included chromic acid anodized aluminum, RTVsilicone solar array adhesives, and KaptonTM on aluminum.
Oservations of Cosmic Ray Electrons and Positrons Using an Imaging Calorimeter
Creators: name: R. L. Golden
name: C. Grimani
name: B. L. Kimbell
name: S. A. Stephens
name: S. J. Stochaj
name: W. R. Webber
name: G. Basini
name: F. Bongiorno
name: F. M. Brancaccio
name: M. Ricci
name: J. F. Ormes
name: E. S. Seo
name: R. E. Streitmatter
name: P. Papini
name: P. Spillantini
name: M. T. Brunetti
name: A. Codino
name: M. Menichelli
name: I. Salvatori
name: M. P. De Pascale
name: A. Morselli
name: P. Picozza
Publisher: name: INFN Open Access Repository
Year: 1992

description: On september 5, 1989 a ballon-borne magnet spectrometer system was flown for 5.5 hr at an altitude of more than 117,000 ft from Prince Albert, Saskatshewan (Canada). The instrument was a modified version of the one used to observe antiprotons in 1979. The most significant modulation was the addition of an imaging calorimeter, 7.33 radiation lengths thick. Inclusion of the calorimeter has significantly improved the ability to distinguish electrons and positrons from the other constituents of the cosmic rays. The absolute electron flux has been determined in the energy interval 1.3-26 GeV (corrected to the top of the atmosphere). At energies above 4 GeV, the electron spectrum at the top of the atmosphere can be represented by a power-law spectrum with constant spectral index. The electron spectrum was found to be J_e- =177 . E^-(3.15+-0.13) electrons/m^2-sr-s-GeV in the energy range 4.0-26 GeV. Below 4 GeV the spectrum showed significant flattening. The e^+/(e^+ +e^-) ratio was found to be (0.11+-0.03) in the energy range 5.2 - 13 Gev.
title: Experimental Investigation of Snapover: The Sudden Increase of Plasma Current Drawn to a Positively Biased Conductor When Surrounded by a Dielectric
Creators: name: Thomson, Clint D.
Publisher: name: Utah State University
Year: 2001

description: Snapover is particularly relevant to Earth-orbiting spacecraft powered by high-voltage solar arrays. During snapover, the current collected by a positively biased conductor that is immersed in a plasma suddenly increases when two conditions are met: i) there is an immediately adjacent insulator; ii) the conductor exceeds a positive threshold voltage with respect to the plasma. The enhanced current develops as a consequence of the insulator, either through secondary electron (SE) emission or by material ionization. Experiments were performed to examine snapover onset potential and current collection dependence on conductor and insulator materials, conductor size and shape, sample history, biasing rate, and contamination and smoothness of the dielectric surface. Numerous current jumps were observed between applied voltages of 100 V and 1000 V. Both surface roughening and surface coatings were found to inhibit snapover. In general, the results did not support previous simple interpretations of the SE model.
ETUDE ECONOMIQUE DE LA FISCALISATION DU SECTEUR DE MARKETING RELATIONNEL EN REPUBLIQUE DEMOCRATIQUE DU CONGO :  Analyse critique
Creators: name: Pierre NG'ABICOKA UDIRO
Publisher: name: Zenodo
Year: 2025

description: Le présent article analyse statistiquement et économétriquement, les données d’enquêtes menée sur la fiscalisation du marketing relationnel en RDC. Ce secteur est jusqu’aujourd’hui en 2024 informel en RDC, par conséquent comporte un enjeu important de la fiscalité. Les données sur lesquelles nous avons travaillé nous permettent de parler de la légalité de marketing relationnel. Elles caractérisent également le fait que la majorité des entrepreneurs n’ont jamais eu de numéro impôt. Les données ont été traitée en fonction de leur nature fonctionnelle, juridique et économétrique. De ce fait, le résultat confirme toutes nos hypothèses et l’utilité du profit de la fiscalisation.
title: Structure and Interaction Energies of Kr Atoms Adsorbed on Graphitic Amorphous Carbon
Creators: name: Lee, Sang -Joon
Publisher: name: Utah State University
Year: 1995

description: The physisorption of Kr on graphitic amorphous carbon (g-C) has been investigated using a statistical approach. The interaction energy calculation process (i) established a structural model of g-C and (ii) determined the adsorbate-adsorbate and the adsorbate-substrate interaction potentials on g-C.
The structural model of g-C was divided into three regions. For the interaction potential between a Kr atom and a carbon atom the short and medium range order of g-C was described with a discrete medium model based on three ring clusters using ring statistics from Beeman's continuous random network C1120 model of g-C. For the intermediate distance region, Beeman's radial distribution function was used to model g-C. A homogenous and isotropic continuous medium model was used at large distances.
The Kr-Kr and Kr-g-C interaction potentials used for Kr on g-C, which are pair-wise Lennard-Jones 6-12 potentials, are similar to Kr on graphite potentials. the validity of the model for g-C and the potentials were verified though calculations for Kr on graphite. Results compared favorably with recent literature values.
The interaction energy calculation results for Kr on a g-C substrate assert that (i) Kr adlayers will form on g-C, (ii) the structure of the Kr adlayer is governed by the substrate corrugation at low coverage and by the Kr-Kr interaction at high coverage, and (iii) there is no direct relation between the structure of Kr adlayers on g-C and those on graphite. The average binding energy of Kr on g-C is comparable with that on graphite, but the corrugation of g-C is perhaps six times that of a graphite substrate. The wrinkling of the g-C surface, due to the presence of a distribution of 5-, 6-, and 7- membered rings, is responsible for this large corrugation of the g-C substrate.
Quantum Logical Gates with Linear Quadripartite Cluster States of Continuous Variables
Creators: name: Tan, Aihong
name: Xie, Changde
name: Peng, Kunchi
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The concrete schemes to realize three types of basic quantum logical gates using linear quadripartite cluster states of optical continuous variables are proposed. The influences of noises and finite squeezing on the computation precision are analyzed in terms of the fidelity of propagated quantum information through the continuous variable cluster states. The proposed schemes provide direct references for the design of experimental systems of one-way quantum computer based on the cluster entanglement of amplitude and phase quadratures of light.
description: accepted for publication by PRA
title: Asymmetric Adsorbate and Substrate Interactions in Physisorbed Systems: N2 on Graphite and Dipolar Molecules on Ionic Substrates
Creators: name: Burns, Teresa Ellen
Publisher: name: Utah State University
Year: 1994

description: Asymmetries in physisorbed systems give rise to interesting phases and phase transitions in two-dimensional (2D) monolayer and multilayer systems. The effects of asymmetric adsorbate and substrate interactions in monolayers of dipolar molecules on ionic substrates and N2 on graphite are studied.
In the case of dipolar molecules on ionic substrates, 2D dielectric phase transitions using a modified Blume-Emery-Griffiths (BEG) model are determined theoretically. A dipole adsorbed vertically above a metal ion lattice site, and pointing up (down), is assigned a spin s=+1 (s=-1). An empty lattice site is assigned a spin S=0. Analytic solutions for both ferroelectrically and antiferroelectrically ordered systems are found. The model is applied to CO adsorbed on MgO and NaCl, and preliminary results for the phase diagram of CH3F on NaCl, are presented.
Multilayer phase transitions for N2 on graphite are studied experimentally using synchrotron x-ray diffraction. The system is measured to undergo layering transitions, where the number of layers increases as the temperature of the system increases. A new multilayer phase diagram based on our results and the combined results published by other researchers is presented. The effects of capillary condensation on this multilayer system are quantified, and it is determined that its primary effect is to broaden the discrete layering transitions. The results for both studies are put into context with other adsorption systems with asymmetric interactions.
The Effect of Hydrogen Absorption on the Cerium Electronic State in CeFe11Ti: an X-Ray Absorption and Circular Magnetic Dichroism Investigation
Creators: name: J. Chaboy
name: A. Marcelli
name: L. Bozukov
name: F. Baudelet
name: E. Dartyge
name: A. Fontaine
name: S. Pizzini
Publisher: name: INFN Open Access Repository
Year: 1994

description: We present a combined X-Ray Absorption Spectroscopy (XAS) and X-Ray Circular Magnetic Dichroism (XCMD) study performed on the CeFe-11TiHx systems. Looking at the changes of the local structure around the metal atoms by EXAFS (Extended X-Ray Absorption Fine structure), the crystallographic position occupied by hydrogen in these compounds has been inferred. Moreover, the influence of hydrogen into the intermediate-valence state of Ce and the electronic localization is discussed. Both XAS and XCMD results evidence the strong correlation between the structural and magnetic changes associated with the modification of the hybridization between the Fe(3d) and Ce(5d) bands.
title: Properties of Rigid Foams for Application as Materials for Light Weight Structures in Space
Creators: name: Chi, Huichen
Publisher: name: Utah State University
Year: 1993

description: The mechanical and mesoscopic structural properties of rigid cellular foam made of polystyrene have been investigated. Basic properties (e.g., density, total and available porosity, permeability, surface area, isotropicity, and cell size and cell wall thickness distributions) were measured. In most cases, alternative methods were used to determine which methods were most appropriate for the type of samples we studied. Standard compression and deflection mechanical tests were performed. The stress-strain curves and related mechanical properties were found to agree with standard cellular structural models of open-cell foams.
We investigated the effects of small (~atm) hydrostatic stress applied to foam samples for long periods of time (~one day). We observed large changes (up to a factor of three) in the stress-strain diagrams, Young's modulus, elastic collapse stress, ultimate strength, resilience, Poisson's ratio, permeability, penetration depth, and available porosity. Effects were most pronounced above 2 atm applied pressure differential, but were observed even for 1 atm loads. Short-term exposure to loads up to ten times as large did not cause comparable changes. These changes were interpreted as resulting from observed changes in the mesoscopic structure occurring near the surface using standard cellular structural models.
This work was originally motivated by applications of foam as an inflating agent and structural component of fiber-epoxy composite tubular struts to be used in innovative space structures. The key recommendations of this study, regarding such applications, are to closely monitor the effects on the mechanical properties of polystyrene foam of: (1) cell structure and density inhomogeneities, and (2) pressure differentials which may be encountered during deployment and curing.
The WiZard/CAPRICE Silicon-Tungsten Calorimeter
Creators: name: M. Bocciolini
name: F. Celletti
name: N. Finetti
name: M. Grandi
name: P. Papini
name: A. Perego
name: S. Piccardi
name: P. Spillantini
name: V. Bidoli
name: M. Candusso
name: M. Casolino
name: M. P. De Pascale
name: A. Morselli
name: P. Picozza
name: R. Sparvoli
name: G. Basini
name: G. Mazzenga
name: M. Ricci
name: F. Bronzini
name: G. Barbiellini
name: M. Boezio
name: V. Bravar
name: F. Fratnik
name: P. Schiavon
name: A. Vacchi
name: N. Zampa
Publisher: name: INFN Open Access Repository
Year: 1995

description: A silicon-tungsten calorimeter has been developed to be flown in the Wizard/CAPRICE balloon borne experiment to measure the flux of antiprotons, positrons and light nuclei in the cosmic radiation. The calorimeter is composed of 8 x, y silicon sampling planes [active area (48 x 48) cm^2} interleaved with 7 tungsten absorbers (7 radiation lengths); it provides the topology of the interacting events together with an independent measurement of the deposited energy. Details of the front -end electronics and the read-out system are given and the overall performances during pre-flight ground operations are described as well.
Extension of the Intranuclear Cascade Model for Photonuclear Reactions at Energies up to 10 GeV
Creators: name: A. S. Iljinov
name: I. A. Pshenichnov
name: N. Bianchi
name: E. De Sanctis
name: V. Muccifora
name: M. Mirazita
name: P. Rossi
Publisher: name: INFN Open Access Repository
Year: 1996

description: The intranuclear cascade (INC) model for photonuclear reactions has been extended at energies up to 10 GeV. To this end a phenomenological method for exclusive description of the elementary γN-interaction has been developed taking into account both the resonance contribution from the two-body channels γN → πB∗ and γN → M∗N (B∗ and M∗ being baryon and meson resonances) and the non-resonant statistical contribution from multibody channels γN → iπN (2 ⩽ i ⩽ 8). This method well describes a wide range of γN data up to Eγ ∼ 10 GeV. The INC model takes into account rescattering and absorption in a nucleus of pions, nucleons, and η-, ϱ-, ω-mesons generated in the γN-interaction. The evaporation, fission and multifragmentation of highly excited residual nucleus have also been taken into account. As a result of the Monte Carlo simulation an event of γA-reaction is generated which contains mesons, nucleons, nuclear fragments, fission fragments and final nuclide. The model well describes the available data on meson production and proton emission obtained with quasi-monochromatic photons.
Compatibility between itinerant synaptic receptors and stable postsynaptic structure
Creators: name: Sekimoto, Ken
name: Triller, Antoine
Publisher: name: arXiv
Year: 2009
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: The density of synaptic receptors in front of presynaptic release sites is stabilized in the presence of scaffold proteins, but the receptors and scaffold molecules have local exchanges with characteristic times shorter than that of the receptor-scaffold assembly. We propose a mesoscopic model to account for the regulation of the local density of receptors as quasiequilibrium. It is based on two zones (synaptic and extrasynaptic) and multi-layer (membrane, sub-membrane and cytoplasmic) topological organization. The model includes the balance of chemical potentials associated with the receptor and scaffold protein concentrations in the various compartments. The model shows highly cooperative behavior including a "phase change" resulting in the formation of well-defined post-synaptic domains. This study provides theoretical tools to approach the complex issue of synaptic stability at the synapse, where receptors are transiently trapped yet rapidly diffuse laterally on the plasma membrane.
description: 31 pages, 7 figures (Phys Rev E, accepted)
Programme de l'atelier "Actualisation d'un cadre conceptuel de l'obésité et maladies chroniques en Tunisie" - JEAI TANIT - 10 & 11 mai 2023 - Tunis
Creators: name: Lepiller, Olivier
name: Ahodegnon, Rodrigue
Publisher: name: Zenodo
Year: 2023
Subjects: Tunisia, obesity, non communicable diseases, participative workshop, causal model, impact model

description: Programme de l'atelier des 10 et 11 mai 2023, à l'hôtel Diplomat à Tunis, "Actualisation d'un cadre conceptuel de l'obésité et des maladies chroniques en Tunisie" organisé par la JEAI TANIT (Resp. H. Aounallah-Skhiri, INSP, Corresp. IRD P. Traissac, UMR MoISA). Cet atelier était animé par Olivier Lepiller socio-anthropologue de l'UMR MoISA à Montpellier, spécialisé dans la thématique de la transition nutritionnelle. Cet atelier participatif avait un double objectif: - amorcer la construction collective d'un modèle conceptuel partagé, à partir de la méthode des chemins d'impact pour aider à orienter les analyses de données ultérieures, - renforcer l'appartenance au collectif et la collaboration entre les institutions parties prenantes (INNTA, INSP, INAT, ISSHT). Cet atelier ainsi que la mise en forme et l'analyse des informations ainsi collectées est également le support du stage de Master d'un étudiant Béninois (R. Ahodegnon) du département santé-nutrition de l'Université Senghor (Université de la Francophonie à Alexandrie).
Multi-frequency measurements of the NVSS foreground sources in the Cosmic Background Imager fields. I. Data release
Creators: name: Angelakis, E.
name: Kraus, A.
name: Readhead, A. C. S.
name: Zensus, J. A.
name: Bustos, R.
name: Krichbaum, T. P.
name: Witzel, A.
name: Pearson, T. J.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present the results of the flux density measurements at 4.85 GHz and 10.45 GHz of a sample of 5998 NVSS radio sources with the Effelsberg 100 m telescope. The initial motivation was the need to identify the NVSS radio sources that could potentially contribute significant contaminating flux in the frequency range at which the Cosmic Background Imager experiment operated. An efficient way to achieve this challenging goal has been to compute the high frequency flux density of those sources by extrapolating their radio spectrum. This is determined by the three-point spectral index measured on the basis of the NVSS entry at 1.4 GHz and the measurements at 4.85 GHz and 10.45 GHz carried out with the 100 m Effelsberg telescope. These measurements are important since the targeted sample probes the weak part of the flux density distribution, hence the decision to make the data available. We present the table with flux density measurements of 3434 sources that showed no confusion allowing reliable measurements, their detection rates, their spectral index distribution and an interpretation which explains satisfactorily the observed uncertainties.
description: 13 pages, 9 figures, in press
title: Intrinsic Loss in Infrared Optical Fibers
Creators: name: Tantiphanwadi, Prapassorn
Publisher: name: Utah State University
Year: 1992

description: Recently, in communication system, fiber optics has become a most interesting development tool as a transmission medium. It first appeared as a feasible transmission medium in 1970. The reason for the development in fiber optics comes from the overwhelming advantage in technology and economy compared to wires and coaxial links. For technology progress, typically, optical fiber has a wide transmission band-width (0.1-1000 GHz), lower loss per unit length (0.15 – 5 dB km ^-1[1]), and does not allow electromagnetic interference. For example, signal transmitted over commercial silica-based fiber must be reamplified every 10 to 50 kilometers, whereas signals transmitted over copper wires must be reamplified every 4 to 6 kilometers. The economical advantage are as follows: a typical cable fiber weighs only about 3 kg/km; cost under $500/km or less, and has a longer repeater spacing of up to 100 km or more at a data rate of at least several hundred megabits per second. Because the optical fibers meet both demands, it has enabled us to construct high bit-rate and long haul communication systems in metropolitan area.
An Alternative Interpretation of Recent ARPES Measurements on TiSe2
Creators: name: van Wezel, Jasper
name: Nahai-Williamson, Paul
name: Saxena, Siddarth S.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Recently there has been a renewed interest in the charge density wave transition of TiSe2, fuelled by the possibility that this transition may be driven by the formation of an excitonic insulator or even an excitonic condensate. We show here that the recent ARPES measurements on TiSe2 can also be interpreted in terms of an alternative scenario, in which the transition is due to a combination of Jahn-Teller effects and exciton formation. The hybrid exciton-phonons which cause the CDW formation interpolate between a purely structural and a purely electronic type of transition. Above the transition temperature, the electron-phonon coupling becomes ineffective but a finite mean-field density of excitons remains and gives rise to the observed diffuse ARPES signals.
description: 4 pages, 2 figures
title: An Embedded Ring Approach to the Vibrational Dynamics of Disordered Two-Dimensional Materials
Creators: name: Doyle, Timothy Edwin
Publisher: name: Utah State University
Year: 1992

description: A theoretical approach was developed to model the vibrational dynamics of amorphous, two-dimensional materials. The materials were modeled as continuous random networks (CRN's) comprising an assemblage of planar rings of diverse size. In-plane vibrational modes for symmetric 4-, 5-, 60, 7-, and 8-membered rings were examined. Vibrational states of isolated rings were modified by coupling the rings to a continuous network to represent rings embedded in a CRN. An effective force constant was used to couple the ring vibrations to the network's collective motions. Potentials were approximated with the use of a central force model (bond-stretching force constant) and a valence force model (bond-stretching and bond-angle-bending force constants). Valence force model calculations employed group theory. Mode frequencies were calculated using the method of small oscillations and the normal coordinate treatment.
Amorphous carbon was used as a test case for the embedded ring approach. A physically consistent set of force constants for the valence force model was determined by comparing the 6-membered ring E2g mode in graphite. Frequencies for selected ring modes were calculated, resulting in a discrete line spectrum.
Calculated frequencies were fitted with gaussian peaks and convoluted into theoretical spectra for comparison with the experimental Raman spectrum of amorphous carbon. Integrated gaussian lineshape intensities were assumed to be directly proportional to the CRN ring statistics. The peaks were convoluted with the peak widths, ring statistics, and number of modes as the adjustable parameters.
Parameters consistent with previous research on the structure and dynamics of amorphous carbon provided satisfactory fits to the data. The best fit to the Raman data includes the E2g and A1g modes of 6-membered rings (present in Raman spectra of nanocrystalline graphite), and the Raman active E2' modes of 5- and 7-membered rings. The corresponding ring statistics agree with previous results, supporting the presence of a sizable percentage of 5- and 7- membered rings, but with no 4- or 8-membered rings. This positive result provides verification for the embedded ring approach, and supports a CRN model for amorphous carbon.
ETUDE PRELIMINAIRE SUR LA FLORE DE LA FORET DE MBEO/MPWOM-NSIEN DANS LA VALLEE DU KASAI/KWILU-RD CONGO
Creators: name: KATALAY Olivier
name: MAZOLA KIKOKO Giresse
name: BELESI KATULA Honoré
name: KALAKWAN LUVANDE Gabin
Publisher: name: Zenodo
Year: 2025

description: L’étude a porté sur la flore de Mbeo/Mpwom-Nsien, dans le Domaine de Chasse et Réserve à Hippopotame de Mangai au Kwilu/RD. Congo

La flore de Mbeo/Mpwom-Nsien, couvrant une superficie de 7,09 Km2, située entre - 4,153°latitude Sud et 19,321° longitude Est.

L’objectif principal de notre recherche est d’étudier la flore de la forêt de Mbeo/Mpwom-Nsien en vue de contribuer à sa connaissance scientifique servant à sa gestion durable, la richesse, la diversité floristique et étudier les spectres écologiques et phytogéographiques des taxons inventoriés.

Pour ce faire, La collecte des espèces des plantes a été faite dans la forêt d’une façon aléatoire, c’est-à-dire nous parcourions les lignes imaginaires suivant un guide forestier pour prélever les échantillons fertiles.

Les résultats obtenus révèlent au stade actuel, l’existence de 104 espèces, appartenant à 83 genres répartis en 48 familles. La plupart des genres sont monospécifiques. Parmi ceux ayant au moins deux espèces, nous citerons Dioscorea, Leptoderris, Rauwolfia,  tandis que l’analyse des spectres écologiques et phytogéographiques de cette florule met en évidence une nette prévalence d’espèces phanérophytes, sarcochores, mésophylles et guinéo-congolaises.

L’impact des activités anthropiques très manifestes dans cette forêt, attesté par l’existence des jachères occasionnées et dominées par Chromolaena odorata dégagent une physionomie émeraude en augmentation.
Composite fermions in Electroweak Symmetry Breaking
Creators: name: Barbieri, Riccardo
name: Isidori, Gino
name: Pappadopulo, Duccio
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: If the electroweak symmetry is broken by some unspecified strong dynamics, composite fermions may exist with definite transformation properties under SU(2)_L x SU(2)_R/SU(2)_{L+R} and may play a role in giving masses by mixing to all the standard quarks and leptons. Assuming this to be the case, we analyze the role of Singlets, Doublets and Triplets in the ElectroWeak Precision Tests and in Flavour Physics. Doublets and Triplets are generically disfavoured. In the Singlet case, we specify the breaking patterns of the flavour group that allow to keep the CKM picture of flavour physics and we discuss the effects of the mixing between composite and elementary fermions. These mixings affect in particular the rather peculiar LHC phenomenology of the composite fermions.
description: 18 pages, 2 figures (v2: minor modifications, published version)
O perigo da relativização indevida da transparência administrativa
Creators: name: Fortini, Cristiana
Publisher: name: figshare
Year: 2021
Subjects: subject: 180103 Administrative Law
subject: FOS: Law

description: Por Cristiana Fortini e Caio Mário Lana Cavalcanti Não é novidade que a Covid-19 gerou uma global instabilidade política e econômica que, naturalmente, atingiu o Brasil. Na seara jurídica, a incerteza igualmente se faz presente, de modo que adormecemos incertos das inovações normativas que eventualmente alterarão o ordenamento jurídico brasileiro no dia seguinte. É nesse contexto que mais um ato normativo restou publicado: a Medida Provisória nº 928/2020, que, dentre outros aspectos, inaugurou restrições aos direitos fundamentais no âmbito do acesso à informação. A medida em comento, ao modificar a Lei nº 12.527/11
title: Extension of the Metal Light Pipe Infrared Spectroscopy Technique: Applications to Surface Adsorption and High Tc Superconductors
Creators: name: Will, Torsten
Publisher: name: Utah State University
Year: 1990

description: The development of an infrared instrument for the study of surface adsorption and high Tc superconductors is presented and its applicability is discussed. The use of and theoretical background for the metal light pipe multiple-reflection technique are discussed in comparison to other infrared devices. Measurements are carried out to determine its limitations with powdered substrates as well as its sensitivity limitation for thin films. The results of the two test measurements, adsorption of CO on MgO and investigation of the energy gap of high Tc superconductors, are presented. Comparisons of the spectra with the experimental and theoretical literature are presented where possible. The necessity for simultaneous infrared and vapor pressure isotherm measurements is discussed, and their instrumental realization is shown. Infrared measurements on the energy gap of high Tc superconductors are shown and compared with results form the literature.
MOESM10 of Common metabolic networks contribute to carbon sink strength of sorghum internodes: implications for bioenergy improvement
Creators: name: Li, Yin
name: Tu, Min
name: Feng, Yaping
name: Wang, Wenqing
name: Messing, Joachim
Publisher: name: figshare
Year: 2019
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Science Policy

description: Additional file 10. Distribution of the expression levels for all the RNA-seq data sets used before (a) and after (b) batch-effect removal.
D2.4 – REPORT ON ePLANET CLUSTERING GOVERNANCE (Final Version)
Creators: name: CHÀFER, Marta
name: GRANOLLERS, Josep Maria
Publisher: name: Zenodo
Year: 2023
Subjects: Energy Transition
Sustainable Energy Action Plans
SEAPs
Sustainable Energy Action and Climate Plans
SECAPs
Public Authorities
Local and Regional governments
Municipalities
Green energy adoption
Data harmonization
Open source
Data Base
Decarbonisation

description: The ePLANET project is a Coordination and Support Action cofounded by the European Commission through Horizon 2020 program. This project aims to reframe the current governance model and design and establish a new clustering governance model to facilitate the deployment of energy transition projects, creating and improving coordination between different municipalities acting together. This needs to be based on a digital framework to share harmonised information, facilitating the adoption of coordinated energy transition actions by the European public sector. All these targeted objectives will give the needed support for the energy transition decision-making process and its practical implementation.
 Considering the outcomes from tasks T2.1 and T2.2, this document aims to design a new clustering governance methodology and specifications of the deployment procedures. Moreover, this document will define new key actors and definition of their roles, responsibilities and skills to be provided, depending on the public authority level.
 The methodology followed to carry out this deliverable is based on in-person meetings with each partner and through specific surveys. The three pilot regions, the Region of Crete in Greece, the Zlín region in the Czech Republic and the province of Girona in Catalonia, have been analysed to understand how they implement ET projects and their mechanisms to achieve it.
 Previously, the first draft of this document was submitted on 30th June 2022 (M10). The first draft was an overall analysis of the current status of the three pilot areas and a first glimpse and approach to clustering governance.
 Likewise, this final document analyses and explains in much more detail how each pilot region is currently governed and all the actors involved in the process of the energy transition deployment. After this comprehensive analysis, this deliverable also proposes a new methodology for clustering governance by defining new actors in the overall process of ET deployment, in each of the pilot region and involving its related country at national political level. The success of this implementation will depend on the real commitment from political governments.
 Ultimately, the energy transition’s success will depend on coordinated efforts at all levels of society. By working together, governments, industry, and international organisations, through clustering governance, can accelerate the adoption of renewable energy sources and the execution of energy transition plans.
Measurement of low signal-to-noise-ratio solar p modes in spatially-resolved helioseismic data
Creators: name: Salabert, D.
name: Leibacher, J.
name: Appourchaux, T.
name: Hill, F.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present an adaptation of the rotation-corrected, m-averaged spectrum technique designed to observe low signal-to-noise-ratio, low-frequency solar p modes. The frequency shift of each of the 2l+1 m spectra of a given (n,l) multiplet is chosen that maximizes the likelihood of the m-averaged spectrum. A high signal-to-noise ratio can result from combining individual low signal-to-noise-ratio, individual-m spectra, none of which would yield a strong enough peak to measure. We apply the technique to GONG and MDI data and show that it allows us to measure modes with lower frequencies than those obtained with classic peak-fitting analysis of the individual-m spectra. We measure their central frequencies, splittings, asymmetries, lifetimes, and amplitudes. The low-frequency, low- and intermediate-angular degrees rendered accessible by this new method correspond to modes that are sensitive to the deep solar interior down to the core and to the radiative interior. Moreover, the low-frequency modes have deeper upper turning points, and are thus less sensitive to the turbulence and magnetic fields of the outer layers, as well as uncertainties in the nature of the external boundary condition. As a result of their longer lifetimes (narrower linewidths) at the same signal-to-noise ratio the determination of the frequencies of lower-frequency modes is more accurate, and the resulting inversions should be more precise.
description: 17 pages, 17 figures. Accepted for publication in ApJ on 27 January 2009