cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A field study of data analysis exercises in a bachelor physics course using the internet platform VISPA
Creators: name: Erdmann, Martin
name: Fischer, Robert
name: Glaser, Christian
name: Klingebiel, Dennis
name: Krause, Raphael
name: Kuempel, Daniel
name: Mueller, Gero
name: Rieger, Marcel
name: Steggemann, Jan
name: Urban, Martin
name: Walz, David
name: Weidenhaupt, Klaus
name: Winchen, Tobias
name: Weltermann, Birgitta
Publisher: name: arXiv
Year: 2014
Subjects: subject: Physics Education (physics.ed-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Bachelor physics lectures on particle physics and astrophysics were complemented by exercises related to data analysis and data interpretation at the RWTH Aachen University recently. The students performed these exercises using the internet platform VISPA, which provides a development environment for physics data analyses. We describe the platform and its application within the physics course, and present the results of a student survey. The students acceptance of the learning project was positive. The level of acceptance was related to their individual preference for learning with a computer. Furthermore, students with good programming skills favor working individually, while students who attribute themselves having low programming abilities favor working in teams. The students appreciated approaching actual research through the data analysis tasks.
description: 21 pages, 8 figures, 1 table, for the internet platform VISPA see http://vispa.physik.rwth-aachen.de
title: collegArti 2/2023
Creators: name: Costa, Sandra
name: Carpi, Anna Lisa
Publisher: name: Dipartimento delle Arti
Year: 2023

description: La collana collegArti prosegue le sue pubblicazioni online su AMSActa, raccogliendo in questo volume anche per il 2022-2023 le testimonianze delle proposte culturali rivolte agli studenti dei Corsi di Laurea Magistrale in Arti Visive e AMaC – Arts, Museology and Curatorship. Avviato nell’anno accademico 2016-2017, collegArti si conferma uno strumento di didattica partecipativa versatile, capace di riflettere la varietà delle numerose iniziative del Dipartimento delle Arti e della Fondazione Federico Zeri. Completa l’edizione del volume una sezione collegArti Dossier che documenta gli esiti del workshop ‘Digital for Museums’, proposto come occasione formativa agli studenti e alle studentesse della Unit ‘Museums and Museology’ del Corso di Laurea Magistrale AMaC.
Direct observation of the coherent nuclear response after the absorption of a photon
Creators: name: Liebel, Matz
name: Schnedermann, Christoph
name: Bassolino, Giovanni
name: Taylor, Garrick
name: Watts, Anthony
name: Kukura, Philipp
Publisher: name: arXiv
Year: 2014
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: How molecules convert light energy to perform a specific transformation is a fundamental question in photophysics. Ultrafast spectroscopy reveals the kinetics associated with electronic energy flow, but little is known about how absorbed photon energy drives nuclear or electronic motion. Here, we used ultrabroadband transient absorption spectroscopy to monitor coherent vibrational energy flow after photoexcitation of the retinal chromophore. In the proton pump bacteriorhodopsin we observed coherent activation of hydrogen wagging and backbone torsional modes that were replaced by unreactive coordinates in the solution environment, concomitant with a deactivation of the reactive relaxation pathway.
In-medium nuclear cluster energies within the Extended Thomas-Fermi approach
Creators: name: Aymard, Francois
name: Gulminelli, Francesca
name: Margueron, Jérôme
Publisher: name: arXiv
Year: 2014
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A recently introduced analytical model for the nuclear density profile[1] is implemented in the Extended Thomas-Fermi (ETF) energy density functional. This allows to (i) shed a new light on the issue of the sign of surface symmetry energy in nuclear mass formulas, which is strongly related to the non-uniformity of the isospin asymmetry in finite nuclei, as well as to (ii) evaluate the in-medium corrections to the nuclear cluster energies in thermodynamic conditions relevant for the description of the (proto)-neutron star crust. The ground state configurations of the model are compared to Hartree-Fock calculations in spherical symmetry for some selected isotopic chains, and systematic errors are quantified. The in-medium modification of the nuclear mass due to the presence of a gas component is shown to strongly depend both on the density and the asymmetry of the nucleon gas. This shows the importance of accounting for such effects in the realistic modelizations of the equation of state for core-collapse supernovae and proto-neutron stars.
description: 15 pages, 9 figures
Radiation Hydrodynamic Instability in Plane-Parallel, Super-Eddington Atmosphere: A Mechanism for Clump Formation
Creators: name: Takeuchi, S.
name: Ohsuga, K.
name: Mineshige, S.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: In order to understand the physical processes underlying clump formation in outflow from supercritical accretion flow, we performed two-dimensional radiation hydrodynamic (RHD) simulations. We focus our discussion on the nature of RHD instability in marginally optically thick, plane-parallel, super-Eddington atmosphere. Initially we set two-layered atmosphere with a density contrast of 100 exposed to strong, upward continuum-radiation force; the lower layer is denser than the upper one, condition for an RHD instability. We assume non-zero but negligible gravitational force, compared with the radiation force. We find that short wavelength perturbations first grow, followed by growth of longer wavelength patterns, which lead to the formation of clumpy structure. The typical size of clumps (clouds) corresponds to about one optical depth. An anti-correlation between the radiation pressure and the gas pressure is confirmed: this anti-correlation provides a damping mechanism of longer wavelength perturbations than the typical clump size. Matter and radiation energy densities are correlated. These features are exactly what we found in the radiation-magnetohydrodynamic (radiation-MHD) simulations of supercritical outflow.
description: 8 pages, 4 figures, accepted for publication in PASJ
Beneficios de la buena gestión del suelo para la generación de energía hidroeléctrica sostenible y confiable en la cuenca del Amazonas
Creators: name: Baudoin Farah, Andrea
name: Da Roit, Giannina
name: Angarita, Héctor
name: Schmitt, Rafael J. P.
Publisher: name: Stanford Digital Repository
Year: 2023
Subjects: subject: Watershed hydrology
subject: Watershed management
subject: Environmental management
subject: Ecosystem services
subject: Hydroelectric power plants
subject: Climate change
subject: Rural communities
subject: Peru

description: This is the case of the ecosystem services provided from the upper basin of the Huallaga River to the Chaglla dam in the department of Huánuco, Peru. The hydrological ecosystem services of the basin allow, among other activities, the irrigation of crops, agroforestry production, and the development of tourism. Given the growing demand for clean energy, the Huallaga basin is being used for hydropower generation. However, these very important hydrological ecosystem services are threatened by climate change. This requires that governments – together with the participation of local actors – develop policies, plans and programs for land management, watershed management and the conservation of ecosystem services, balancing the needs of different actors and sectors to avoid or reduce socio-environmental conflicts. Good agricultural management and good practices, as well as the identification and implementation of protected natural areas, can help resolve some of the potential socio- environmental conflicts around the use of water. This document analyzes the enabling factors, obstacles, and key actors for the implementation of payment schemes for ecosystem services and investments in natural capital based on an analysis of the regional context with particular emphasis on the socioeconomic and socio-environmental situation of the population in Huánuco.
Pulling the Thread of Decertification: What Challenges are Raised by the Proposal to Reform Legal Gender Status?
Creators: name: Cooper, Davina
name: Emerton, Robyn
Publisher: name: feminists@law
Year: 2020

description: In decertification, the state withdraws from registering, assigning, or guaranteeing a person’s sex and gender, giving one shape to the growing momentum towards their informalisation. This article explores decertification as a speculative reform, now emerging onto the political and legal agenda, in two primary ways. First, it asks what contribution, if any, might decertification make to a feminist politics intent on undoing gender-based hierarchies. Second, as a methodological thread, what concerns, issues, and hopes does decertification bring with it? In addressing these questions, the article considers different versions of decertification alongside an alternative reform strategy of legally recognising multiple gender identities. It explores the feminist benefits of decertification; the concerns and criticisms expressed; and strategies for responding to feminist worries. Here, the article turns to possible and already in-place governmental strategies to manage the informalisation of sex/ gender, alongside criticisms that can and have been made of these strategies. It then considers decertification’s relationship to other strategies that foreground purpose, specificity, connection, and context, within a politics intent on questioning and unsettling existing orderings. Finally, the article considers the risks of androcentrism and gender-neutral law; and argues for the need to embed decertification within a wider multiplex progressive agenda.
description: feminists@law, Vol 10 No 2 (2020)
Perturbative photon production in a dispersive medium
Creators: name: Belgiorno, Francesco
name: Cacciatori, Sergio Luigi
name: Piazza, Francesco Dalla
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate photon pair-creation in a dispersive dielectric medium induced by the presence of a spacetime varying dielectric constant. Our aim is to examine the possibility to observe new phenomena of pair creation induced by travelling dielectric perturbations e.g. created by laser pulses by means of the Kerr effect. In this perspective, we adopt a semi-phenomenological version of the Hopfield model in which a space-time dependent dielectric susceptibility appears. We focus our attention on perturbation theory, and provide general formulas for the photon production induced by a local but arbitrarily spacetime dependent refractive index perturbation. As an example, we further explore the case of an uniformly travelling perturbation, and provide examples of purely time-dependent perturbations.
description: 9 pages and one figure
Short-Term Meteorological and Environmental Signals Recorded in a Firn Core from a High-Accumulation Site on Plateau Laclavere, Antarctic Peninsula
Creators: name: Hoffmann-Abdi, Kirstin
name: Fernandoy, Francisco
name: Meyer, Hanno
name: Freitag, Johannes
name: Opel, Thomas
name: McConnell, Joseph R.
name: Schneider, Christoph
Publisher: name: Humboldt-Universität zu Berlin
Year: 2021
Subjects: subject: Antarctic Peninsula
subject: firn cores
subject: stable water isotopes
subject: glacio-chemistry
subject: high accumulation
subject: surface melt
subject: 550 Geowissenschaften

description: High-accumulation sites are crucial for understanding the patterns and mechanisms of climate and environmental change in Antarctica since they allow gaining high-resolution proxy records from firn and ice. Here, we present new glacio- and isotope-geochemical data at sub-annual resolution from a firn core retrieved from an ice cap on Plateau Laclavere (LCL), northern Antarctic Peninsula, covering the period 2012–2015. The signals of two volcanic eruptions and two forest fire events in South America could be identified in the non-sea-salt sulphur and black carbon records, respectively. Mean annual snow accumulation on LCL amounts to 2500 kg m−2 a−1 and exhibits low inter-annual variability. Time series of δ18O, δD and d excess show no seasonal cyclicity, which may result from (1) a reduced annual temperature amplitude due to the maritime climate and (2) post-depositional processes. The firn core stratigraphy indicates strong surface melt on LCL during austral summers 2013 and 2015, likely related to large-scale warm-air advection from lower latitudes and temporal variations in sea ice extent in the Bellingshausen-Amundsen Sea. The LCL ice cap is a highly valuable natural archive since it captures regional meteorological and environmental signals as well as their connection to the South American continent.
Cellular Automata based Feedback Mechanism in Strengthening biological Sequence Analysis Approach to Robotic Soccer
Creators: name: Sree, P. Kiran
name: Raju, G. V. S.
name: Raju, S. Viswandha
name: Devi, N. S. S. S. N Usha
Publisher: name: arXiv
Year: 2013
Subjects: subject: Multiagent Systems (cs.MA)
subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: This paper reports on the application of sequence analysis algorithms for agents in robotic soccer and a suitable representation is proposed to achieve this mapping. The objective of this research is to generate novel better in-game strategies with the aim of faster adaptation to the changing environment. A homogeneous non-communicating multi-agent architecture using the representation is presented. To achieve real-time learning during a game, a bucket brigade algorithm is used to reinforce Cellular Automata Based Classifier. A technique for selecting strategies based on sequence analysis is adopted.
Hydrogenation-induced ferromagnetism on graphite surfaces
Creators: name: Moaied, M.
name: Alvarez, J. V.
name: Palacios, J. J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We calculate the electronic structure and magnetic properties of hydrogenated graphite surfaces using van der Waals density functional theory (DFT) and model Hamiltonians. We find, as previously reported, that the interaction between hydrogen atoms on graphene favors adsorption on different sublattices along with an antiferromagnetic coupling of the induced magnetic moments. On the contrary, when hydrogenation takes place on the surface of graphene multilayers or graphite (Bernal stacking), the interaction between hydrogen atoms competes with the different adsorption energies of the two sublattices. This competition may result in all hydrogen atoms adsorbed on the same sublattice and, thereby, in a ferromagnetic state for low concentrations. Based on the exchange couplings obtained from the DFT calculations, we have also evaluated the Curie temperature by mapping this system onto an Ising-like model with randomly located spins. Remarkably, the long-range nature of the magnetic coupling in these systems makes the Curie temperature size dependent and larger than room temperature for typical concentrations and sizes.
description: 11 pages, 18 figures
Introduction to the Special Issue on the Future of Legal Gender: Exploring the Feminist Politics of Decertification
Creators: name: Cooper, Davina
name: Grabham, Emily
name: Renz, Flora
Publisher: name: feminists@law
Year: 2020

description: Introduction to the special issue on the Future of Legal Gender. The editors of the special issue are Flora Renz, Davina Cooper and Emily Grabham.
description: feminists@law, Vol 10 No 2 (2020)
A fast version of the k-means classification algorithm for astronomical applications
Creators: name: Ordovás-Pascual, I.
name: Almeida, J. Sánchez
Publisher: name: arXiv
Year: 2014
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Context. K-means is a clustering algorithm that has been used to classify large datasets in astronomical databases. It is an unsupervised method, able to cope very different types of problems. Aims. We check whether a variant of the algorithm called single-pass k-means can be used as a fast alternative to the traditional k-means. Methods. The execution time of the two algorithms are compared when classifying subsets drawn from the SDSS-DR7 catalog of galaxy spectra. Results. Single-pass k-means turn out to be between 20 % and 40 % faster than k-means and provide statistically equivalent classifications. This conclusion can be scaled up to other larger databases because the execution time of both algorithms increases linearly with the number of objects. Conclusions. Single-pass k-means can be safely used as a fast alternative to k-means.
Gender’s Wider Stakes: Lay Attitudes to Legal Gender Reform
Creators: name: Peel, Elizabeth
name: Newman, Hannah JH
Publisher: name: feminists@law
Year: 2020

description: The Future of Legal Gender (FLaG) project is interested in examining the implications, for a wide range of stakeholders, of changing how legal sex/gender is regulated in England and Wales. In this article, we explore the views of ‘the wider public’ as manifest in responses to our ‘Attitudes to Gender’ survey (n=3,101), which ran in October to December 2018. Generally, respondents were invested in the status quo regarding a binary two-sex registration of gender close to birth. We discuss this finding with reference to cisgenderism and endosexism, focusing particularly on being critical of ‘gender’ and foregrounding biological sex, and views for and against self-identifying gender. In tandem, we also provide a critical commentary on the methodological positives and pitfalls associated with online survey research on a ‘topical’ issue. We suggest that cisgenderism could provide a less individualised framework for understanding different people’s hopes and worries with regard to both the current legal gender framework, and the possibility of reform.
description: feminists@law, Vol 10 No 2 (2020)
Diffusion phenomenon in the hyperbolic and parabolic regimes
Creators: name: Sapora, A.
name: Codegone, M.
name: Barbero, G.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences
subject: 35

description: We discuss the diffusion phenomenon in the parabolic and hyperbolic regimes. New effects related to the finite velocity of the diffusion process are predicted, that can partially explain the strange behavior associated to adsorption phenomenon. For sake of simplicity, the analysis is performed by considering a sample in the shape of a slab limited by two perfectly blocking surfaces, in such a manner that the problem is one-dimensional in the space. Two cases are investigated. In the former, the initial distribution of the diffusing particles is assumed of gaussian type, centered around the symmetry surface in the middle of the sample. In the latter, the initial distribution is localized close to the limiting surfaces. In both cases, we show that the evolution toward to the equilibrium distribution is not monotonic. In particular, close to the limiting surfaces the bulk density of diffusing particles present maxima and minima related to the finite velocity of the diffusion process connected to the second order time derivative in the partial differential equation describing the evolution of the bulk density in the sample.
description: 16 pages, 4 figures, post-print of the article published in Physics Letters A
Conformal Ricci Solitons and related Integrability Conditions
Creators: name: Catino, Giovanni
name: Mastrolia, Paolo
name: Monticelli, Dario D.
name: Rigoli, Marco
Publisher: name: arXiv
Year: 2014
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: In this paper we introduce, in the Riemannian setting, the notion of conformal Ricci soliton, which includes as particular cases Einstein manifolds, conformal Einstein manifolds and (generic and gradient) Ricci solitons. We provide here some necessary integrability conditions for the existence of these structures that also recover, in the corresponding contexts, those already known in the literature for conformally Einstein manifolds and for gradient Ricci solitons. A crucial tool in our analysis is the construction of some appropriate and highly nontrivial $(0,3)$-tensors related to the geometric structures, that in the special case of gradient Ricci solitons become the celebrated tensor $D$ recently introduced by Cao and Chen. A significant part of our investigation, which has independent interest, is the derivation of a number of commutation rules for covariant derivatives (of functions and tensors) and of transformation laws of some geometric objects under a conformal change of the underlying metric.
Blastic plasmacytoid dendritic cell neoplasm: protocol of a systematic review and meta-analysis of case reports and individual records of patients
Creators: name: Kiss, Szabolcs
Publisher: name: Zenodo
Year: 2022
Subjects: BPDCN
systematic review
protocol
meta-analysis

description: Blastic plasmacytoid dendritic cell neoplasm (BPDCN) is a rare, but highly aggressive hematologic malignancy derived from plasmacytoid dendritic cells. This document is the study protocol of our systematic review and meta-analysis of case reports and individual records of patients. We aim to collect and systematize the currently available evidence about BPDCN.
The Challenge of Same Sex Provision: How Many Girls Does a Girls' School Need?
Creators: name: Renz, Flora
Publisher: name: feminists@law
Year: 2020

description: Can a girls’ school include a boy and remain a single-sex school? Is there something intrinsic to being a girls’ school that exists separately to pure demographic issues? Does single-sex education, and specifically female single-sex education, have an inherent value that is different to that of mixed sex education? To address these questions, this paper draws on some initial findings from a wider research project on the Future of Legal Gender. Specifically, this paper will consider the implications for single-sex services if legal gender status were to be reformed. Especially, what would the consequences be for reform options which (re)allocate authority to organisations or individuals to determine gender criteria and individual status in terms of eligibility to receive or access services? The article uses the example of single sex schools to consider two key questions regarding potential reforms in this area. Firstly, what aims is gender differentiation currently trying to achieve? And secondly, how do service providers, including secondary education providers, currently engage with challenges to their differentiation criteria?
description: feminists@law, Vol 10 No 2 (2020)
Two-way deterministic quantum key distribution against detector side channel attacks
Creators: name: Lu, Hua
name: Fung, Chi-Hang Fred
name: Cai, Qing-yu
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In a two-way deterministic quantum key distribution (DQKD) protocol, Bob randomly prepares qubits in one of four states and sends them to Alice. To encode a bit, Alice performs an operation on each received qubit and returns it to Bob. Bob then measures the backward qubits to learn about Alice's operations and hence the key bits. Recently, we proved the unconditional security of the final key of this protocol in the ideal device setting. In this paper, we prove that two-way DQKD protocols are immune to all detector side channel attacks at Bob's side, while we assume ideal detectors at Alice's side for error testing. Our result represents a step forward in making DQKD protocols secure against general detector side channel attacks.
description: Published version
Extended warm gas in Orion KL as probed by methyl cyanide
Creators: name: Bell, T. A.
name: Cernicharo, J.
name: Viti, S.
name: Marcelino, N.
name: Palau, Aina
name: Esplugues, G. B.
name: Tercero, B.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: In order to study the temperature distribution of the extended gas within the Orion Kleinmann-Low nebula, we have mapped the emission by methyl cyanide (CH3CN) in its J=6_K-5_K, J=12_K-11_K, J=13_K-12_K, and J=14_K-13_K transitions at an average angular resolution of ~10 arcsec (22 arcsec for the 6_K-5_K lines), as part of a new 2D line survey of this region using the IRAM 30m telescope. These fully sampled maps show extended emission from warm gas to the northeast of IRc2 and the distinct kinematic signatures of the hot core and compact ridge source components. We have constructed population diagrams for the four sets of K-ladder emission lines at each position in the maps and have derived rotational excitation temperatures and total beam-averaged column densities from the fitted slopes. In addition, we have fitted LVG model spectra to the observations to determine best-fit physical parameters at each map position, yielding the distribution of kinetic temperatures across the region. The resulting temperature maps reveal a region of hot (T > 350 K) material surrounding the northeastern edge of the hot core, whereas the column density distribution is more uniform and peaks near the position of IRc2. We attribute this region of hot gas to shock heating caused by the impact of outflowing material from active star formation in the region, as indicated by the presence of broad CH3CN lines. This scenario is consistent with predictions from C-shock chemical models that suggest that gas-phase methyl cyanide survives in the post-shock gas and can be somewhat enhanced due to sputtering of grain mantles in the passing shock front.
description: 24 pages, 20 figures, accepted for publication in A&A
First order convergence and roots
Creators: name: Christofides, Demetres
name: Kral, Daniel
Publisher: name: arXiv
Year: 2014
Subjects: subject: Combinatorics (math.CO)
subject: Discrete Mathematics (cs.DM)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: Nesetril and Ossona de Mendez introduced the notion of first order convergence, which unifies the notions of convergence for sparse and dense graphs. They asked whether if G_i is a sequence of graphs with M being their first order limit and v is a vertex of M, then there exists a sequence v_i of vertices such that the graphs G_i rooted at v_i converge to M rooted at v. We show that this holds for almost all vertices v of M and we give an example showing that the statement need not hold for all vertices.
Real-time correlation reference update for astronomical adaptive optics
Creators: name: Basden, Alastair
Publisher: name: arXiv
Year: 2014
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The use of laser guide stars in astronomical adaptive optics results in elongated Shack-Hartmann wavefront sensor image patterns. Image correlation techniques can be used to determine local wavefront slope by correlating each sub-aperture image with its expected elongated shape, or reference image. Here, we present a technique which allows the correlation reference images to be updated while the adaptive optics loop is closed. We show that this can be done without affecting the resulting point spread functions. On-sky demonstration is reported. We compare different techniques for obtaining the reference images, and investigate performance over a wide range of adaptive optics system parameters. We find that image correlation techniques perform better than the standard centre-of-gravity algorithm and are highly suited for use with open-loop multiple object adaptive optics systems.
description: Accepted by MNRAS
The Feasibility of Coherent Energy Transfer in Microtubules
Creators: name: Craddock, Travis John Adrian
name: Friesen, Douglas
name: Mane, Jonathan
name: Hameroff, Stuart
name: Tuszynski, Jack A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: It was once purported that biological systems were far too warm and wet to support quantum phenomena mainly due to thermal effects disrupting quantum coherence. However recent experimental results and theoretical analyses have shown that thermal energy may assist, rather than disrupt, quantum coherence, especially in the dry hydrophobic interiors of biomolecules. Specifically, evidence has been accumulating for the necessary involvement of quantum coherence and entanglement between uniquely arranged chromophores in light harvesting photosynthetic complexes. Amazingly, the tubulin subunit proteins, which comprise microtubules, also possess a distinct architecture of chromophores, namely aromatic amino acids including tryptophan. The geometry and dipolar properties of these aromatics are similar to those found in photosynthetic units indicating that tubulin may support coherent energy transfer. Tubulin aggregated into microtubule geometric lattices may support such energy transfer, which could be of import for biological signaling and communication essential to living processes. Here we perform a computational investigation of energy transfer between chromophoric amino acids in tubulin via dipole excitations coupled to the surrounding thermal environment. We present the spatial structure and energetic properties of the tryptophan residues in the microtubule constituent protein tubulin. Plausibility arguments for the conditions favoring a quantum mechanism of signal propagation along a microtubule are provided. Overall we find that coherent energy transfer in tubulin and microtubules is biologically feasible.
description: 9 pages, 4 figures, submitted to PLoS One
OHEJP COVRIN D4.3.2 Coronavirus contamination in cats
Creators: name: Lepoder, Sophie
Publisher: name: Zenodo
Year: 2023
Subjects: OHEJP
COVRIN
SARS-CoV-2
cats

description: The main aim of the study was to provide information on feline coronavirus (FCoV) contamination by collecting different samples from cats in order to improve our knowledge about dissemination of FCoV and the impact of viral genetic mutations in the development of the feline infectious peritonitis disease.
Distance Distributions for Real Cellular Networks
Creators: name: Wang, Siyi
name: Guo, Weisi
name: McDonnell, Mark D.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: This paper presents the general distribution for the distance between a mobile user and any base station (BS). We show that a random variable proportional to the distance squared is Gamma distributed. In the case of the nearest BS, it can be reduced to the well established result of the distance being Rayleigh distributed. We validate our results using a random node simulation and real Vodafone 3G network data, and go on to show how the distribution is tractable by deriving the average aggregate interference power.
description: 2 pages, 1 figure, IEEE Conference on Computer Communications (INFOCOM)
Towards a Generic Framework for the Development of Unicode Based Digital Sindhi Dictionaries
Creators: name: Ismaili, Imdad Ali
name: Bhatti, Zeeshan
name: Shah, Azhar Ali
Publisher: name: arXiv
Year: 2014
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: Dictionaries are essence of any language providing vital linguistic recourse for the language learners, researchers and scholars. This paper focuses on the methodology and techniques used in developing software architecture for a UBSESD (Unicode Based Sindhi to English and English to Sindhi Dictionary). The proposed system provides an accurate solution for construction and representation of Unicode based Sindhi characters in a dictionary implementing Hash Structure algorithm and a custom java Object as its internal data structure saved in a file. The System provides facilities for Insertion, Deletion and Editing of new records of Sindhi. Through this framework any type of Sindhi to English and English to Sindhi Dictionary (belonging to different domains of knowledge, e.g. engineering, medicine, computer, biology etc.) could be developed easily with accurate representation of Unicode Characters in font independent manner.
«Das grosse Thema ist Vereinbarkeit»
Creators: name: Resch, Dörte
Publisher: name: Wohnbaugenossenschaften Schweiz
Year: 2023
Subjects: subject: Employer Branding
subject: Fachkräftemangel
subject: Vereinbarkeit
subject: Rekrutierung
subject: 150 - Psychologie
subject: 330 - Wirtschaft

description: Welche Konsequenzen haben die Verschiebung von einem Arbeitgeber- zu einem Arbeitnehmermarkt und sich ändernde Bedürfnisse? Prof. Dr. Dörte Resch ordnet im Interview ein.
Closed sets of correlations: answers from the zoo
Creators: name: Lang, Ben
name: Vertesi, Tamas
name: Navascues, Miguel
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the conditions under which a set of multipartite nonlocal correlations can describe the distributions achievable by distant parties conducting experiments in a consistent universe. Several questions are posed, such as: are all such sets "nested", i.e., contained into one another? Are they discrete or do they form a continuum? How many of them are supraquantum? Are there non-trivial polytopes among them? We answer some of these questions or relate them with established conjectures in complexity theory by introducing a "zoo" of physically consistent sets which can be characterized efficiently via either linear or semidefinite programming. As a bonus, we use the zoo to derive, for the first time, concrete impossibility results in nonlocality distillation.
description: 24 pages, 5 figures
LeeLatinx: Nuestra Realidad Supera La Ficción
Creators: name: Lanza, Sabrina
name: Ávila, Moisés
name: Barrios, Sebastián
Publisher: name: Zenodo
Year: 2022
Subjects: muerte
cocina
desigualdad
literatura

description: La competencia lectora, atraviesa diversas configuraciones hoy, pero no deja de ser importante. Leer es un recurso de defensa, de integración social y no hacerlo profundiza la marginalidad de jóvenes que constantemente postulan a programas de estudios o trabajos (García, 2017). Por ello, la clave de comprender el fenómeno de la narrativa es entender que está fragmentada y descifrar los significados que poseen para los sujetos los objetos de textos y elementos visuales. La lectura no siempre se fragmenta para «abreviar» la lectura sino también para aprender el enriquecimiento de sentido dado por la interconexión del libro con reseñas, entrevistas a los lectores y vídeos” (García, 2017, p.28). Bajo este nuevo escenario de los actos de leer y escribir, surge la necesidad de promover la difusión de narrativa local latinoamericana que permita estrechar las distancias y la comprensión amplia de nuestras realidades. Bajo lo expuesto, podemos inferir que leer y escribir sobre nosotros, sobre nuestro país y sobre nuestra cultura, reduce la brecha social. Es así que surge el proyecto “LeeLatinx”, cuyo fin es la difusión de narrativa local de Bolivia, México y Colombia a través de contenidos multimedia que permitan llegar a un público amplio y diverso. En el presente documento, compartimos todo el proceso creativo y de diagnóstico que posibilitaron la ejecución de nuestro proyecto y que esperamos, pueda ser replicado en otras formatos que reafirmen y consoliden nuestra cultura latina. Esto a través de las diversas manifestaciones que tiene como ser la literatura.
Bulk Band Structure of Bi$_2$Te$_3$
Creators: name: Michiardi, Matteo
name: Aguilera, Irene
name: Bianchi, Marco
name: de Carvalho, Vagner Eustáquio
name: Ladeira, Luiz Orlando
name: Teixeira, Nayara Gomes
name: Soares, Edmar Avellar
name: Friedrich, Chiristoph
name: Blügel, Stefan
name: Hofmann, Philip
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The bulk band structure of Bi$_2$Te$_3$ has been determined by angle-resolved photoemission spectroscopy and compared to first-principles calculations. We have performed calculations using the local density approximation (LDA) of density functional theory and the one-shot $GW$ approximation within the all-electron full-potential linearized augmented-plane-wave (FLAPW) formalism, fully taking into account spin-orbit coupling. Quasiparticle effects produce significant changes in the band structure of \bite~when compared to LDA. Experimental and calculated results are compared in the spectral regions where distinct differences between the LDA and $GW$ results are present. Overall a superior agreement with $GW$ is found, highlighting the importance of many-body effects in the band structure of this family of topological insulators.
description: 8 pages, 5 Figures
Pair correlation functions and the wavevector-dependent surface tension in a simple density functional treatment of the liquid-vapour interface
Creators: name: Parry, A. O.
name: Rascón, C.
name: Willis, G.
name: Evans, R.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the density-density correlation function $G({\bf r},{\bf r}')$ in the interfacial region of a fluid (or Ising-like magnet) with short-ranged interactions using square gradient density functional theory. Adopting a simple double parabola approximation for the bulk free-energy density, we first show that the parallel Fourier transform $G(z,z';q)$ and local structure factor $S(z;q)$ separate into bulk and excess contributions. We attempt to account for both contributions by deriving an interfacial Hamiltonian, characterised by a wavevector dependent surface tension $σ(q)$, and then reconstructing density correlations from correlations in the interface position. We show that the standard crossing criterion identification of the interface, as a surface of fixed density (or magnetization), does not explain the separation of $G(z,z';q)$ and the form of the excess contribution. We propose an alternative definition of the interface position based on the properties of correlations between points that "float" with the surface and show that this describes the full $q$ and $z$ dependence of the excess contributions to both $G$ and $S$. However, neither the "crossing-criterion" nor the new "floating interface" definition of $σ(q)$ are quantities directly measurable from the total structure factor $S^{tot}(q)$ which contains additional $q$ dependence arising from the non-local relation between fluctuations in the interfacial position and local density. Since it is the total structure factor that is measured experimentally or in simulations, our results have repercussions for earlier attempts to extract and interpret $σ(q)$.
description: 11 pages, 1 figure
From Spin Glass to Quantum Spin Liquid Ground States in Molybdate Pyrochlores
Creators: name: Clark, L.
name: Nilsen, G. J.
name: Kermarrec, E.
name: Ehlers, G.
name: Knight, K. S.
name: Harrison, A.
name: Attfield, J. P.
name: Gaulin, B. D.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present new magnetic heat capacity and neutron scattering results for two magnetically frustrated molybdate pyrochlores: $S=1$ oxide Lu$_2$Mo$_2$O$_7$ and $S={\frac{1}{2}}$ oxynitride Lu$_2$Mo$_2$O$_5$N$_2$. Lu$_2$Mo$_2$O$_7$ undergoes a transition to an unconventional spin glass ground state at $T_f {\sim} 16$ K. However, the preparation of the corresponding oxynitride tunes the nature of the ground state from spin glass to quantum spin liquid. The comparison of the static and dynamic spin correlations within the oxide and oxynitride phases presented here reveals the crucial role played by quantum fluctuations in the selection of a ground state. Furthermore, we estimate an upper limit for a gap in the spin excitation spectrum of the quantum spin liquid state of the oxynitride of $Δ {\sim} 0.05$ meV or ${\fracΔ{|θ|}}\sim0.004$, in units of its antiferromagnetic Weiss constant $θ {\sim}-121$ K.
description: 8 pages, 9 figures
Capacitação sobre as Fontes de Informação da BVS para a Rede Brasileira de Informação em Ciências da Saúde - 2021 - Seção III - Tema: Criação de Documentos Monográficos, não convencionais, Teses e Dissertações no sistema FI-Admin.
Creators: name: BIREME/OPS/OMS
name: Silva, Lais Aparecida da
name: Suga, Sueli Mitiko Yano
Publisher: name: Zenodo
Year: 2021
Subjects: Metodologia BVS
Red BVS

description: [PT] (3 de 6) Capacitação sobre as Fontes de Informação da BVS para a Rede Brasileira - LILACS Criação de registros bibliográficos: Documentos Monográficos, não convencionais, Teses e Dissertações 0:45 - Abertura 26:30 - Inicio 27:50 - Objetivos a serem alcançados 28:22 - Metodologia LILACS 30:00 - Procedimentos gerais de descrição Bibliográfica 34:49 - Monografia Multivolume 35:35 - Coleção de Monografias 38:25 - Série Monográfica 39:54 - Monográfico 40:30 - Não convencional 42:50 - Controle de Autoridade 45:42 - O que devo lembrar 47:40 - A importancia da LILACS no mundo 48:37 - Fi-admin 48:57 - Documentalista 53:13 - Criação de novos registros 1:03:38 - Indexação 1:16:35 - Metadados 1:18:16 - Estatiscas de Contribuição 1:19:40 - Encerramento 1:19:59 - Dúvidas Consulte a página geral para acessar a gravação:https://lilacs.bvsalud.org/sessoes-virtuais-lilacs/capacitacao-sobre-as-fontes-de-informacao-da-bvs-para-a-rede-brasileira-de-informacao-em-ciencias-da-saude-2021/
Sequences of Periodic Solutions and Infinitely Many Coexisting Attractors in the Border-Collision Normal Form
Creators: name: Simpson, David J. W.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 37G25, 37G15, 37E30

description: The border-collision normal form is a piecewise-linear continuous map on $\mathbb{R}^N$ that describes dynamics near border-collision bifurcations of nonsmooth maps. This paper studies a codimension-three scenario at which the border-collision normal form with $N=2$ exhibits infinitely many attracting periodic solutions. In this scenario there is a saddle-type periodic solution with branches of stable and unstable manifolds that are coincident, and an infinite sequence of attracting periodic solutions that converges to an orbit homoclinic to the saddle-type solution. Several important features of the scenario are shown to be universal, and three examples are given. For one of these examples infinite coexistence is proved directly by explicitly computing periodic solutions in the infinite sequence.
description: 23 pages, 5 figures
Adsorption-desorption phenomena and diffusion of neutral particles in the hyperbolic regime
Creators: name: Sapora, A
name: Codegone, M
name: Barbero, G
name: Evangelista, LR
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences
subject: 35

description: The adsorption phenomenon of neutral particles from the limiting surfaces of the sample in the Langmuir approximation is investigated. The diffusion equation regulating the redistribution of particles in the bulk is assumed to be of hyperbolic type, in order to take into account the finite velocity of propagation of the density variations. We show that in this framework the condition on the conservation of the number of particles gives rise to a nonlocal boundary condition. We solve the partial differential equation relevant to the diffusion of particles by means of the separation of variables, and present how it is possible to obtain approximated eigenvalues contributing to the solution. The same problem is faced numerically by a finite difference algorithm. The time dependence of the surface density of adsorbed particles is deduced by means of the kinetic equation at the interface. The predicted non-monotonic behavior of the surface density versus the time is in agreement with experimental observations reported in the literature, and is related to the finite velocity of propagation of the density variations.
description: 22 pages, 8 figures, pre-print of the article published in J. Phys. A: Math. Theor
Predictive GW calculations using plane waves and pseudopotentials
Creators: name: Klimeš, Jiří
name: Kaltak, Merzuk
name: Kresse, Georg
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We show that quasiparticle (QP) energies as calculated in the $GW$ approximation converge to the wrong value using the projector augmented wave (PAW) method, since the overlap integrals between occupied orbitals and high energy, plane wave like orbitals, are incorrectly described. The error is shown to be related to the incompleteness of the partial wave basis set inside the atomic spheres. It can be avoided by adopting norm-conserving partial waves, as shown by analytic expressions for the contribution from unoccupied orbitals with high kinetic energy. Furthermore, $G_0W_0$ results based on norm-conserving PAW potentials are presented for a large set of semiconductors and insulators. Accurate extrapolation procedures to the infinite basis set limit and infinite k-point limit are discussed in detail.
Image Restoration Using Joint Statistical Modeling in Space-Transform Domain
Creators: name: Zhang, Jian
name: Zhao, Debin
name: Xiong, Ruiqin
name: Ma, Siwei
name: Gao, Wen
Publisher: name: arXiv
Year: 2014
Subjects: subject: Multimedia (cs.MM)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: This paper presents a novel strategy for high-fidelity image restoration by characterizing both local smoothness and nonlocal self-similarity of natural images in a unified statistical manner. The main contributions are three-folds. First, from the perspective of image statistics, a joint statistical modeling (JSM) in an adaptive hybrid space-transform domain is established, which offers a powerful mechanism of combining local smoothness and nonlocal self-similarity simultaneously to ensure a more reliable and robust estimation. Second, a new form of minimization functional for solving image inverse problem is formulated using JSM under regularization-based framework. Finally, in order to make JSM tractable and robust, a new Split-Bregman based algorithm is developed to efficiently solve the above severely underdetermined inverse problem associated with theoretical proof of convergence. Extensive experiments on image inpainting, image deblurring and mixed Gaussian plus salt-and-pepper noise removal applications verify the effectiveness of the proposed algorithm.
description: 14 pages, 18 figures, 7 Tables, to be published in IEEE Transactions on Circuits System and Video Technology (TCSVT). High resolution pdf version and Code can be found at: http://idm.pku.edu.cn/staff/zhangjian/IRJSM/