cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Topological and trivial domain wall states in engineered atomic chains
Creators: name: Jeong, Seung-Gyo
name: Kim, Tae-Hwan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: In a recent article, Huda et al. demonstrated tuneable topological domain wall states in the c(2$\times$2) chlorinated Cu(100). Their system allows to experimentally tune the domain wall states using atom manipulation by the tip of a scanning tunneling microscope (STM). They have realized topological domain wall states of two prototypical 1D models such as trimer and coupled dimer chains. However, they did not distinguish trivial domain wall states from topological ones in their models. As a result, all states of a specific domain wall are not topological but trivial. Here, we show why the specific domain wall states are trivial and how to make them topological. This topological consideration would provide more clear insight on future studies on topological domain wall states in artificial atomic chains.
A gestão em saúde nos cursos de medicina: contributos para a educação médica
Creators: name: Miguel Cardoso, Elisamã Da Purificação
name: Dos Santos De Oliveira, Miguel
Publisher: name: Anais do Instituto de Higiene e Medicina Tropical
Year: 2021

description: .
description: Anais do Instituto de Higiene e Medicina Tropical, v. 20 (2021): Suplemento nº 1 - Perspetivas sobre a educação médica em Angola
Avaliação da Competência clínica do interno de Pediatria do Hospital Pediátrico David Bernardino, pela aplicação do mini-exercício clínico avaliativo
Creators: name: Nunes Cunha, Edna De Fátima
name: Vicente Van-Dúnem, Joaquim Carlos
Publisher: name: Anais do Instituto de Higiene e Medicina Tropical
Year: 2021

description: .
description: Anais do Instituto de Higiene e Medicina Tropical, v. 20 (2021): Suplemento nº 1 - Perspetivas sobre a educação médica em Angola
The ALMA Band 6 Receiver Upgrade
Creators: name: Mangum, Jeff
Publisher: name: Zenodo
Year: 2019

description: The current ALMA Band 6 (211-275 GHz) receiver systems have been the "work horse" science band for ALMA through its first seven proposal cycles.  A program to improve the performance of the ALMA Band 6 cartridges has focused on the following areas:

(1) Improved sensitivity over the entire frequency band to allow for more sensitive observations of important spectral lines, including CO and its isotopomers.

(2) Improved sensitivity over the entire RF band.

(3) Flatter receiver response across wider basebands, providing more uniform sensitivity.

(4) Improved polarization performance.

In this presentation I will describe the ALMA NA project, which recently passed CoDR, to upgrade the Band 6 receiver cartridges to implement the improvements listed above.
The end of the p-form hierarchy
Creators: name: de Wit, Bernard
name: Samtleben, Henning
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The introduction of a non-abelian gauge group embedded into the rigid symmetry group G of a field theory with abelian vector fields and no corresponding charges, requires in general the presence of a hierarchy of p-form gauge fields. The full gauge algebra of this hierarchy can be defined independently of a specific theory and is encoded in the embedding tensor that determines the gauge group. When applied to specific Lagrangians, the algebra is deformed in an intricate way and in general will only close up to equations of motion. The group-theoretical structure of the hierarchy exhibits many interesting features, which have been studied starting from the low-p forms. Here the question is addressed what happens generically for high values of p. In addition a number of other features is discussed concerning the role that the p-forms play in various deformations of the theory.
description: 16 pages, two minor changes in euations
Fatores associados ao desempenho dos estudantes no ciclo básico da Faculdade de Medicina da Universidade Agostinho Neto
Creators: name: Nanduva Kahull, Cezaltina
name: Miguel André, António
Publisher: name: Anais do Instituto de Higiene e Medicina Tropical
Year: 2021

description: .
description: Anais do Instituto de Higiene e Medicina Tropical, v. 20 (2021): Suplemento nº 1 - Perspetivas sobre a educação médica em Angola
Raimo Pullat, Risto Pullat, Morze wódki. Przemyt spirytusu na Bałtyku w okresie międzywojennym
Creators: name: Klonder, Andrzej
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2014

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 63 Nr. 4 (2014)
Causas de insucesso na avaliação dos alunos do quinto ano na unidade curricular de Pediatria 2005-2011
Creators: name: Mavacala Freitas, César
name: Vicente Van-Dúnem, Joaquim Carlos
Publisher: name: Anais do Instituto de Higiene e Medicina Tropical
Year: 2021

description: .
description: Anais do Instituto de Higiene e Medicina Tropical, v. 20 (2021): Suplemento nº 1 - Perspetivas sobre a educação médica em Angola
Fluctuation theorem for spin transport at insulating ferromagnetic junctions
Creators: name: Sato, Tetsuya
name: Tatsuno, Masahiro
name: Matsuo, Mamoru
name: Kato, Takeo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: General relations for nonequilibrium spin transport at a magnetic junction between a normal metal and a ferromagnetic insulator are derived from the quantum fluctuation theorem. They include the extended Onsager relations between the spin conductance and the spin-current noise that hold for nonequilibrium states driven by an external current. These relations, that are valid for a general setup of spin Hall magnetoresistance, provide a comprehensive viewpoint for understanding of unidirectional spin Hall magnetoresistance in insulating ferromagnetic junctions.
description: 8 pages, 1 figure
The effect of tamper layer on the explosion dynamics of atom clusters
Creators: name: Jurek, Zoltan
name: Faigel, Gyula
Publisher: name: arXiv
Year: 2008
Subjects: subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The behavior of small samples in very short and intense hard x-ray pulses is studied by molecular dynamics type calculations. The main emphasis is put on the effect of various tamper layers about the sample. This is discussed from the point of view of structural imaging of single particles, including not only the distortion of the structure but also the background conditions. A detailed picture is given about the Coulomb explosion, with explanation of the tampering mechanism. It is shown that a thin water layer is efficient in slowing down the distortion of the atomic structure, but it gives a significant contribution to the background.
Learning Description Logic Ontologies. Five Approaches. Where Do They Stand?
Creators: name: Ozaki, Ana
Publisher: name: arXiv
Year: 2021
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences

description: The quest for acquiring a formal representation of the knowledge of a domain of interest has attracted researchers with various backgrounds into a diverse field called ontology learning. We highlight classical machine learning and data mining approaches that have been proposed for (semi-)automating the creation of description logic (DL) ontologies. These are based on association rule mining, formal concept analysis, inductive logic programming, computational learning theory, and neural networks. We provide an overview of each approach and how it has been adapted for dealing with DL ontologies. Finally, we discuss the benefits and limitations of each of them for learning DL ontologies.
Tunneling resistance of a one dimensional random lattice
Creators: name: Carvalho, Isabel Cristina Dos Santos
Publisher: name: University of British Columbia
Year: 2010

description: The resistivity of a one-dimensional lattice consisting of randomly distributed conductivity and insulating sites is considered. Tunneling resistance of the form R[sub o] i e[sup bi] is assumed for a cluster of i adjacent insulating sites. Three different ensembles are considered and compared. In the first ensemble the number of insulating "atoms" is fixed and distributed in a linear chain; in the second one there exists a fixed probability p of having an insulator "atom" occupying a site in a linear chain, and finally the third one consists of a line bent into a circle and the probability p is considered. It is observed that in the thermodynamic limit, the average ensemble resistance per site diverges at the critical filling fraction p[sub c] = e[sup –b], while the variance of the resistance diverges at the lower filling fraction p[sub c1] = p[sup 2/c] . Computer simulations of large but finite systems, however, exhibit a much weaker divergence of the resistance per site at p[sub c] and no divergence of the variance at P[sub c1].
Can a resonance theory be a renormalizable theory?
Creators: name: Sanz-Cillero, J. J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this talk we make an exhaustive analysis of the possible chiral invariant operators that may described the resonance decay S->pi pi. These provide at the same time the only available chiral invariant structures for the loop ultraviolet divergences in this amplitude. Independently of the order in perturbation theory, we find just one single-trace term (four if multi-trace operators are allowed), whose renormalization renders the matrix element finite.
description: 6 pages, 1 figure, AIP style; to appear in the proceedings of the International Workshop on QCD, QCD @ Work 2007, Martina Franca, Italy (16-20 June 2007)
Non-Fickian single-file pore transport
Creators: name: Farrell, Spencer
name: Rutenberg, Andrew D
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Single file diffusion (SFD) exhibits anomalously slow collective transport when particles are able to immobilize by binding and unbinding to the one-dimensional channel within which the particles diffuse. We have explored this system for short pore-like channels using a symmetric exclusion process (SEP) with fully stochastic dynamics. We find that for shorter channels, a non-Fickian regime emerges for slow binding kinetics. In this regime the average flux $\langle Φ\rangle \sim 1/L^3$, where $L$ is the channel length in units of the particle size. We find that a two-state model describes this behavior well for sufficiently slow binding rates, where the binding rates determine the switching time between high-flux bursts of directed transport and low-flux leaky states. Each high-flux burst is Fickian with $\langle Φ\rangle \sim 1/L$. Longer systems are more often in a low flux state, leading to the non-Fickian behavior.
Modelos de organização duma faculdade de medicina - Estudo de caso da Faculdade de Medicina da Universidade Agostinho Neto - Perspetiva histórica (1975-2007)
Creators: name: Bugalho Gomes, Guilherme
name: Fresta, Mário
name: Kajibanga, Victor
Publisher: name: Anais do Instituto de Higiene e Medicina Tropical
Year: 2021

description: .
description: Anais do Instituto de Higiene e Medicina Tropical, v. 20 (2021): Suplemento nº 1 - Perspetivas sobre a educação médica em Angola
title: ÐÐ°ÑÑÐ¾Ð²Ð¾Ðµ Ð¾Ð±ÑÐ»ÑÐ¶Ð¸Ð²Ð°Ð½Ð¸Ðµ Ð´Ð»Ñ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð¸ Ð¾Ð¿ÑÐ¸Ð¼Ð¸Ð·Ð°ÑÐ¸Ð¸ ÑÐ¸ÑÑÐµÐ¼
title: ÑÑÐµÐ±Ð½Ð¾Ðµ Ð¿Ð¾ÑÐ¾Ð±Ð¸Ðµ
titleType: Subtitle
Creators: name: Ð¡Ð¸Ð´Ð½ÐµÐ², ÐÐ»ÐµÐºÑÐ°Ð½Ð´Ñ
name: Ð¡Ð°Ð±Ð¾Ð½Ð¸Ñ, Ð¡ÐµÑÐ³ÐµÐ¹
name: Ð¦ÑÐ³Ð°Ð½, ÐÐ»Ð°Ð´Ð¸Ð¼Ð¸Ñ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2025
Subjects: ÐÐ°ÑÑÐ¾Ð²Ð¾Ð³Ð¾ Ð¾Ð±ÑÐ»ÑÐ¶Ð¸Ð²Ð°Ð½Ð¸Ñ ÑÐµÐ¾ÑÐ¸Ñ
Ð¡Ð¸ÑÑÐµÐ¼Ð½ÑÐ¹ Ð°Ð½Ð°Ð»Ð¸Ð·
Ð°Ð½Ð°Ð»Ð¸ÑÐ¸ÑÐµÑÐºÐ¸Ðµ ÑÐ°ÑÑÐµÑÑ
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ÑÑÐµÐ±Ð½Ð¸ÐºÐ¸ Ð¸ Ð¿Ð¾ÑÐ¾Ð±Ð¸Ñ Ð´Ð»Ñ Ð²ÑÐ·Ð¾Ð²

description: Ð Ð¿Ð¾ÑÐ¾Ð±Ð¸Ð¸ ÑÐ°ÑÑÐ¼Ð°ÑÑÐ¸Ð²Ð°ÑÑÑÑ Ð¾ÑÐ½Ð¾Ð²Ð½ÑÐµ Ð¿ÑÐ¸Ð½ÑÐ¸Ð¿Ñ Ð¸ Ð¿Ð¾Ð´ÑÐ¾Ð´Ñ Ðº Ð¿Ð¾ÑÑÑÐ¾ÐµÐ½Ð¸Ñ ÑÐ¾ÑÐ¼Ð°Ð»ÑÐ½ÑÑ Ð¼Ð¾Ð´ÐµÐ»ÐµÐ¹ ÑÐ¸ÑÑÐµÐ¼ Ñ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸ÐµÐ¼ ÑÐµÐ¾ÑÐ¸Ð¸ Ð¼Ð°ÑÑÐ¾Ð²Ð¾Ð³Ð¾ Ð¾Ð±ÑÐ»ÑÐ¶Ð¸Ð²Ð°Ð½Ð¸Ñ, Ð° ÑÐ°ÐºÐ¶Ðµ Ð°Ð½Ð°Ð»Ð¸ÑÐ¸ÑÐµÑÐºÐ¸Ðµ Ð¸ ÑÐ¸ÑÐ»ÐµÐ½Ð½ÑÐµ Ð¼ÐµÑÐ¾Ð´Ñ Ð°Ð½Ð°Ð»Ð¸Ð·Ð° Ð¸Ñ ÑÐ°ÑÐ°ÐºÑÐµÑÐ¸ÑÑÐ¸Ðº. Ð£Ð´ÐµÐ»ÐµÐ½Ð¾ Ð²Ð½Ð¸Ð¼Ð°Ð½Ð¸Ðµ ÑÐµÑÐµÐ½Ð¸Ñ Ð·Ð°Ð´Ð°Ñ Ð¾Ð¿ÑÐ¸Ð¼Ð¸Ð·Ð°ÑÐ¸Ð¸ Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ Ð¼Ð¾Ð´ÐµÐ»ÐµÐ¹ Ð¼Ð°ÑÑÐ¾Ð²Ð¾Ð³Ð¾ Ð¾Ð±ÑÐ»ÑÐ¶Ð¸Ð²Ð°Ð½Ð¸Ñ. ÐÐ¾ÑÐ¾Ð±Ð¸Ðµ Ð¾ÑÐ¸ÐµÐ½ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¾ ÐºÐ°Ðº Ð½Ð° Ð¸Ð·ÑÑÐµÐ½Ð¸Ðµ ÑÐµÐ¾ÑÐµÑÐ¸ÑÐµÑÐºÐ¾Ð¹ ÑÐ°ÑÑÐ¸ Ð² ÑÐ°Ð¼ÐºÐ°Ñ ÐºÑÑÑÐ¾Ð² Â«Ð¡Ð¸ÑÑÐµÐ¼Ð½ÑÐ¹ Ð°Ð½Ð°Ð»Ð¸Ð· Ð¸ Ð¿ÑÐ¸Ð½ÑÑÐ¸Ðµ ÑÐµÑÐµÐ½Ð¸Ð¹Â» Ð¸ Â«ÐÐµÑÐ¾Ð´Ñ Ð¾Ð¿ÑÐ¸Ð¼Ð¸Ð·Ð°ÑÐ¸Ð¸Â», ÑÐ°Ðº Ð¸ Ð½Ð° Ð¿ÑÐ°ÐºÑÐ¸ÑÐµÑÐºÐ¾Ðµ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð¿ÑÐ¸ Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½Ð¸Ð¸ ÑÐ¿ÑÐ°Ð¶Ð½ÐµÐ½Ð¸Ð¹. ÐÐ¾ÑÐ¾Ð±Ð¸Ðµ Ð¼Ð¾Ð¶ÐµÑ Ð±ÑÑÑ ÑÐµÐºÐ¾Ð¼ÐµÐ½Ð´Ð¾Ð²Ð°Ð½Ð¾ ÑÑÑÐ´ÐµÐ½ÑÐ°Ð¼ Ð¸Ð½ÑÑÐ¸ÑÑÑÐ° ÐºÐ¾Ð¼Ð¿ÑÑÑÐµÑÐ½ÑÑ Ð½Ð°ÑÐº Ð¸ ÐºÐ¸Ð±ÐµÑÐ±ÐµÐ·Ð¾Ð¿Ð°ÑÐ½Ð¾ÑÑÐ¸, Ð¾Ð±ÑÑÐ°ÑÑÐ¸Ð¼ÑÑ Ð¿Ð¾ Ð½Ð°Ð¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ Â«ÐÐ½ÑÐ¾ÑÐ¼Ð°ÑÐ¸ÐºÐ° Ð¸ Ð²ÑÑÐ¸ÑÐ»Ð¸ÑÐµÐ»ÑÐ½Ð°Ñ ÑÐµÑÐ½Ð¸ÐºÐ°Â», Ð° ÑÐ°ÐºÐ¶Ðµ ÑÑÑÐ´ÐµÐ½ÑÐ°Ð¼ Ð´ÑÑÐ³Ð¸Ñ Ð½Ð°Ð¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ð¹ Ð¿ÑÐ¸ Ð¸Ð·ÑÑÐµÐ½Ð¸Ð¸ ÐºÑÑÑÐ¾Ð², ÑÐ²ÑÐ·Ð°Ð½Ð½ÑÑ Ñ Ð¿ÑÐ¸Ð¼ÐµÐ½ÐµÐ½Ð¸ÐµÐ¼ Ð¼ÐµÑÐ¾Ð´Ð¾Ð² ÑÐµÐ¾ÑÐ¸Ð¸ Ð¼Ð°ÑÑÐ¾Ð²Ð¾Ð³Ð¾ Ð¾Ð±ÑÐ»ÑÐ¶Ð¸Ð²Ð°Ð½Ð¸Ñ Ð´Ð»Ñ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ ÑÐ¸ÑÑÐµÐ¼.
The physical significance of the Babak-Grishchuk gravitational energy-momentum tensor
Creators: name: Butcher, Luke M.
name: Lasenby, Anthony
name: Hobson, Michael
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We examine the claim of Babak and Grishchuk [1] to have solved the problem of localising the energy and momentum of the gravitational field. After summarising Grishchuk's flat-space formulation of gravity, we demonstrate its equivalence to General Relativity at the level of the action. Two important transformations are described (diffeomorphisms applied to all fields, and diffeomorphisms applied to the flat-space metric alone) and we argue that both should be considered gauge transformations: they alter the mathematical representation of a physical system, but not the system itself. By examining the transformation properties of the Babak-Grishchuk gravitational energy-momentum tensor under these gauge transformations (infinitesimal and finite) we conclude that this object has no physical significance.
description: 10 pages. Submitted to Phys. Rev. D; acknowledgements adjusted
ACA Spectrometer Development and Possibility of a Future ACA Correlator based on GPU technology
Creators: name: Minamidani, Tetsuhiro
Publisher: name: Zenodo
Year: 2019

description: The ACA Spectrometer project is a development project to deliver to ALMA a GPU spectrometer that processes signals from the four ACA TP (12-m) antennas. The Development Project is led by KASI in collaboration with NAOJ. Its initial design phase was concluded by PDR on Feb. 2017 and the continuation of the project was approved by the Board on Nov. 2017. Now, the detailed design is on-going. In this phase, test observations have been conducted with the Nobeyama 45-m Telescope with successful spectra results. An AOS on-site test focused on environmental checks was also completed in Feb. 2018. We are now moving forward to complete this development, and to installation and commissioning in 2020. The next step in the process will be the CDMR, currently planned in Summer 2019. After the delivery of the ACA spectrometer, a natural continuation will be the consideration of an ACA correlator based on GPU technology. We will comment on this possibility from a technical point of view.
Baryon Modes of B Meson Decays
Creators: name: Fayyazuddin
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The baryon decay modes of B,bar{B}-> N_{1}bar{N}_{2}(f), bar{N}_{1}N_{2}(bar{f}) provide a frame work to test CP-invariance in baryon sector. It is shown that in the rest frame of B, N_{1} and bar{N}_{2} come out with longitudnal polarization lambda_{1}=lambda_{2}=\pm 1 with decay width Gamma_{f}=Gamma_{f}^{++}+Gamma_{f}^{--} and the asymmetry parameter alpha _{f}=ΔΓ_{f}=Γ_{f}^{++}-Gamma_{f}^{--} . It is shown that CP invariance prediction alpha_{f}=-\bar{alpha}_{bar{f}} can be tested in these decay modes; especially in the time dependent decays of B_{q}^{0}-bar{B}_{q}^{0} complex. Apart from this, it is shown that decay modes B(bar{B})->N_{1}bar{N}_{2}(bar{N}_{1}N_{2}) and subsequent non leptonic decays of N_{2},bar{N}_{2} or (N_{1},bar{N}_{1}) into hyperon (antihyperon) also provide a frame work to study CP-odd observables in hyperon decays.
description: 12 pages, 3 figures
Perfil académico dos estudantes de semiótica radiológica da Faculdade de Medicina da Universidade Agostinho Neto (2006/2007) e suas dificuldades na interpretação de imagens radiográficas
Creators: name: Cossengue Chingala, Bonifácio
name: Cadete Leite, António
name: Fresta, Mário
Publisher: name: Anais do Instituto de Higiene e Medicina Tropical
Year: 2021

description: .
description: Anais do Instituto de Higiene e Medicina Tropical, v. 20 (2021): Suplemento nº 1 - Perspetivas sobre a educação médica em Angola
Quasifinite representations of the Lie superalgebra of quantum pseudo differential operators
Creators: name: Boyallian, Carina
name: Meinardi, Vanesa
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 17B10, 17B70

description: In this paper we extend general results obtained by V. Kac and J. Liberati, in "Unitary quasifinite representations of $W_\infty$", (Letters Math. Phys., 53 (2000), 11-27), for quasifinite highest weight representations of $\Z$-graded Lie algebras to ${1/2}\Z$-graded Lie superalgebras, and we apply these to classify the irreducible quasifinite highest weight modules of the Lie superalgebra of quantum pseudo-differential operators.
description: 23 pages
Perfil socioeconómico dos candidatos admitidos à faculdade de medicina em 2008
Creators: name: Conceição Alves, Bernardete
name: Kajibanga, Víctor
Publisher: name: Anais do Instituto de Higiene e Medicina Tropical
Year: 2021

description: .
description: Anais do Instituto de Higiene e Medicina Tropical, v. 20 (2021): Suplemento nº 1 - Perspetivas sobre a educação médica em Angola
Deep Geometric Distillation Network for Compressive Sensing MRI
Creators: name: Fan, Xiaohong
name: Yang, Yin
name: Zhang, Jianping
Publisher: name: arXiv
Year: 2021
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences
subject: F.2.2; I.2.7
subject: 68T05, 68T20, 68T09, 68W25

description: Compressed sensing (CS) is an efficient method to reconstruct MR image from small sampled data in $k$-space and accelerate the acquisition of MRI. In this work, we propose a novel deep geometric distillation network which combines the merits of model-based and deep learning-based CS-MRI methods, it can be theoretically guaranteed to improve geometric texture details of a linear reconstruction. Firstly, we unfold the model-based CS-MRI optimization problem into two sub-problems that consist of image linear approximation and image geometric compensation. Secondly, geometric compensation sub-problem for distilling lost texture details in approximation stage can be expanded by Taylor expansion to design a geometric distillation module fusing features of different geometric characteristic domains. Additionally, we use a learnable version with adaptive initialization of the step-length parameter, which allows model more flexibility that can lead to convergent smoothly. Numerical experiments verify its superiority over other state-of-the-art CS-MRI reconstruction approaches. The source code will be available at \url{https://github.com/fanxiaohong/Deep-Geometric-Distillation-Network-for-CS-MRI}
description: Accepted by IEEE-EMBS International Conference on Biomedical and Health Informatics (BHI), 2021
Alfred Eisfeld u.a. (Hrsg.), Besetzt, interniert, deportiert. Der Erste Weltkrieg und die deutsche, jüdische, polnische und ukrainische Zivilbevölkerung im östlichen Europa
Creators: name: Gawlitta, Severin
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2014

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 63 Nr. 4 (2014)
Relação entre a condição de trabalhador-estudante e o insucesso académico - Faculdade de Medicina, Universidade Agostinho Neto, 6º Ano, 2007/2008
Creators: name: Domingos António Da Silva Gerardo, Ana
name: Bettencourt Mateus, Miguel Santana
Publisher: name: Anais do Instituto de Higiene e Medicina Tropical
Year: 2021

description: .
description: Anais do Instituto de Higiene e Medicina Tropical, v. 20 (2021): Suplemento nº 1 - Perspetivas sobre a educação médica em Angola
Neoconger tuberculatus
Creators: name: Smith, David G.
name: Marceniuk, Alexandre P.
name: Rotundo, Matheus M.
name: Carvalho, Cintia O.
name: Caires, Rodrigo A.
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Anguilliformes
Moringuidae
Neoconger
Neoconger tuberculatus

description: Neoconger tuberculatus (Castle, 1965)
(Figure 12; Table 3)
Leptocephalus tuberculatus Castle, 1965: 131, fig. 1 F–H; Manly Beach, Sydney, New South Wales, Australia, coll. 1907; 32.7 mm TL (“type”) and 33.5 mm (“ paratype ”) AMS IA. 2477.
Diagnosis. Based on the available information (Castle 1965; Smith 1989b), the larva of Neoconger tuberculatus has fewer preanal myomeres (46–48) than any of the Atlantic species (49–60). It further differs from N. torrei in lacking the anterior ventral melanophore (vs present); from N. anaelisae in having a sharper intestinal loop and lacking the anterior ventral melanophore (vs present). It differs from Neoconger species in having the posterior lateral melanophore (vs absent) and fewer LVBV myomeres (51–53 vs 57–60). It differs from N. vermiformis in lacking the anterior ventral melanophore (vs present).
Description (from Castle 1965). Intestinal loop sharp, anterior ventral melanophore absent, posterior lateral melanophore present. Predorsal myomeres 53–54, preanal myomeres 46–48, LVBV 51–53, total myomeres 100– 101, dorsal-fin rays 180–182, anal-fin rays 147–165.
Distribution. Coast of New South Wales near Sydney, Australia.
Remarks. This species was described from two larval specimens collected in 1907 at Manly Beach near Sydney in southeastern Australia. It has not been reported since, and no adult specimens of Neoconger are known from the area, or anywhere in the Indo-West Pacific.
Smith & Castle (1972: 245) briefly reported finding two specimens of larval Neoconger in the ZMUC that were collected in 1893 and were originally from the Godefroy Museum in Hamburg, Germany. The locality was given only as “Sydhavet” (South Sea). Total myomeres were given as 99 and 100 myomeres, close to the values in N. tuberculatus. No further information is available, but it is one additional piece of evidence for Neoconger in the Indo-Pacific, assuming that Sydhavet does refer to that ocean.
description: Published as part of Smith, David G., Marceniuk, Alexandre P., Rotundo, Matheus M., Carvalho, Cintia O. & Caires, Rodrigo A., 2024, A review of the genus Neoconger (Anguilliformes: Moringuidae), with the description of a new species, pp. 109-128 in Zootaxa 5492 (1) on pages 123-124, DOI: 10.11646/zootaxa.5492.1.6, http://zenodo.org/record/13212151
Visita dei luoghi santi e pellegrinaggio interiore: Angela da Foligno, Margery Kempe e Brigida di Svezia
Creators: name: Vanelli Coralli, Rossana
Publisher: name: Annali Online  Lettere - Ferrara
Year: 2012

description: Annali Online  Lettere - Ferrara, VII 1 (2012)
High-density QCD with CMS at the LHC
Creators: name: d'Enterria, David
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The capabilities of the CMS experiment to explore the rich heavy-ion physics programme offered by the CERN Large Hadron Collider (LHC) are summarised. Various representative measurements in Pb-Pb collisions at sqrt(s) = 5.5 TeV are covered. These include "bulk" observables (charged hadron multiplicity, low-pT inclusive hadron spectra and elliptic flow) which provide information on the collective properties of the system; as well as perturbative processes (high-pT hadrons, jets, gamma-jet and quarkonium production) which yield "tomographic" information of the densest phases of the reaction.
description: 8 pages, 7 figs. Proceeds plenary talk Quark-Matter'08, Jaipur, India. To appear in J. Phys. G
Exploring the structure of $^{29}$Ne
Creators: name: Manju
name: Dan, M.
name: Singh, G.
name: Singh, Jagjit
name: Shubhchintak
name: Chatterjee, R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We apply a fully quantum mechanical Coulomb breakup theory under the aegis of post form finite-range distorted wave Born approximation to analyze the elastic Coulomb breakup of $^{29}$Ne on $^{208}$Pb at $244$\,MeV/u. We calculate several reaction observables to quantify its structural parameters. One-neutron removal cross-section is calculated to check the consistency of the ground state configuration of $^{29}$Ne with the available experimental data. A scrutiny of the parallel momentum distribution of the charged fragment reveals a full width at half maximum of $82$\,MeV/c, which is in good agreement with the experimental value and indicates a moderate halo for a nearly spherical $^{29}$Ne in the $^{28}$Ne$(0^+) \otimes 2p_{3/2}ν$ ground state. The energy-angular distributions and average momentum of the charged fragment point to the absence of post-acceleration effects in the breakup process, a desirable result for the elastic breakup.
description: 19 pages, 7 figures
Perfil e papel do docente de medicina estudo de caso - Faculdade de Medicina da Universidade Agostinho Neto (Angola, 2012)
Creators: name: Ulundo, Abel
name: Fresta, Mário
name: Lemos, Manuel
Publisher: name: Anais do Instituto de Higiene e Medicina Tropical
Year: 2021

description: .
description: Anais do Instituto de Higiene e Medicina Tropical, v. 20 (2021): Suplemento nº 1 - Perspetivas sobre a educação médica em Angola
Evolution of perturbed accelerating relativistic shock waves
Creators: name: Palma, G.
name: Mignone, A.
name: Vietri, M.
name: Del Zanna, L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the evolution of an accelerating hyperrelativistic shock under the presence of upstream inhomogeneities wrinkling the discontinuity surface. The investigation is conducted by means of numerical simulations using the PLUTO code for astrophysical fluid dynamics. The reliability and robustness of the code are demonstrated against well known results coming from the linear perturbation theory. We then follow the nonlinear evolution of two classes of perturbing upstream atmospheres and conclude that no lasting wrinkle can be preserved indefinitely by the flow. Finally we derive analytically a description of the geometrical effects of a turbulent upstream ambient on the discontinuity surface.
description: 54 Pages, 24 Figures. Accepted for Publication in the Astrophysical Journal
High-cadence imaging of the Sun
Creators: name: Wedemeyer, Sven
Publisher: name: Zenodo
Year: 2019

description: A challenge of observing the Sun with ALMA is that the primary beam covers only a small region on the Sun and is therefore filled with a complex radiation pattern, which evolves on extremely short time scales of only seconds and below. Fully exploiting ALMA's possibilities therefore requires imaging at very high cadence. Accordingly, there is much potential for improving the solar observing modes and post-processing of data.
The development study "High-cadence imaging of the Sun", which started in 2018,  aims at developing a high-cadence imaging capability by employing realistic test cases based on state-of-the-art numerical simulations, the Solar ALMA Simulator tool, and a solar simulation pipeline. Comparisons between the input and output of the simulation pipeline will reveal how well imaging at high cadence performs and how to optimize it. We present an overview of the study and its current state.
László Kürti, Peter Skalník (Hrsg.), Postsocialist Europe. Anthropological Perspectives from Home
Creators: name: Hierasimowicz, Konrad
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2013

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 62 Nr. 2 (2013): Nationalisierung und Pragmatismus. Staatliche Institutionen und Minderheiten in Polen 1918-1939
Misuse of the sign test in narrative synthesis of evidence
Creators: name: Nikolakopoulos, Stavros
Publisher: name: arXiv
Year: 2021
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: In narrative synthesis of evidence, it can be the case that the only quantitative measures available concerning the efficacy of an intervention is the direction of the effect, i.e. whether it is positive or negative. In such situations, the sign test has been proposed in the literature and in recent Cochrane guidelines as a way to test whether the proportion of positive effects is favourable. I argue that the sign test is inappropriate in this context as the data are not generated according to the Binomial distribution it employs. I demonstrate possible consequences for both hypothesis testing and estimation via hypothetical examples.
description: 6 pages, 1 figure
A deep Large Binocular Telescope view of the Canes Venatici I dwarf galaxy
Creators: name: Martin, Nicolas F.
name: Coleman, Matthew G.
name: De Jong, Jelte T. A.
name: Rix, Hans-Walter
name: Bell, Eric F.
name: Sand, David J.
name: Hill, John M.
name: Thompson, David
name: Burwitz, Vadim
name: Giallongo, Emanuele
name: Ragazzoni, Roberto
name: Diolaiti, Emiliano
name: Gasparo, Federico
name: Grazian, Andrea
name: Pedichini, Fernando
name: Bechtold, Jill
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the first deep color-magnitude diagram of the Canes Venatici I (CVnI) dwarf galaxy from observations with the wide field Large Binocular Camera on the Large Binocular Telescope. Reaching down to the main-sequence turnoff of the oldest stars, it reveals a dichotomy in the stellar populations of CVnI: it harbors an old (> 10 Gyr), metal-poor ([Fe/H] ~ -2.0) and spatially extended population along with a much younger (~ 1.4-2.0 Gyr), 0.5 dex more metal-rich, and spatially more concentrated population. These young stars are also offset by 64_{-20}^{+40} pc to the East of the galaxy center. The data suggest that this young population, which represent ~ 3-5 % of the stellar mass of the galaxy within its half-light radius, should be identified with the kinematically cold stellar component found by Ibata et al. (2006). CVnI therefore follows the behavior of the other remote MW dwarf spheroidals which all contain intermediate age and/or young populations: a complex star formation history is possible in extremely low-mass galaxies.
description: 4 pages, 3 figures, accepted for publication in ApJL. Minor changes, conclusions unchanged
Benchmark graphs for testing community detection algorithms
Creators: name: Lancichinetti, Andrea
name: Fortunato, Santo
name: Radicchi, Filippo
Publisher: name: arXiv
Year: 2008
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Community structure is one of the most important features of real networks and reveals the internal organization of the nodes. Many algorithms have been proposed but the crucial issue of testing, i.e. the question of how good an algorithm is, with respect to others, is still open. Standard tests include the analysis of simple artificial graphs with a built-in community structure, that the algorithm has to recover. However, the special graphs adopted in actual tests have a structure that does not reflect the real properties of nodes and communities found in real networks. Here we introduce a new class of benchmark graphs, that account for the heterogeneity in the distributions of node degrees and of community sizes. We use this new benchmark to test two popular methods of community detection, modularity optimization and Potts model clustering. The results show that the new benchmark poses a much more severe test to algorithms than standard benchmarks, revealing limits that may not be apparent at a first analysis.
description: 6 pages, 8 figures. Extended version published on Physical Review E. The code to build the new benchmark graphs can be downloaded from http://santo.fortunato.googlepages.com/inthepress2
Robert Luft, Parlamentarische Führungsgruppen und politische Strukturen in der tschechischen Gesellschaft. Tschechische Abgeordnete und Parteien des österreichischen Reichsrats 1907-1914
Creators: name: Alexander, Manfred
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2014

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 63 Nr. 4 (2014)
The Correlator Upgrade Project
Creators: name: Brogan, Crystal
Publisher: name: Zenodo
Year: 2019

description: The ALMA 2030 Development Roadmap recommends that the top development priority is to broaden the bandwidth of ALMA by at least a factor of two. On the path to this goal, the North American ALMA Science Center together with the NRAO Central Development Lab is developing a significant upgrade to the Baseline Correlator via the Correlator Upgrade Project (CUP). In Phase 1 of the CUP, an approved ALMA development project, the correlator will have eight times more channels available for each baseband, and the downstream subsystems will be upgraded to handle the increased data rates. In Phase 2 of the CUP, the correlator would also be able to process twice the current bandwidth (assuming the electronics upstream of the correlator are also updated). I will present key science benefits from the CUP Phase 1, along with the anticipated schedule, and prospects for Phase 2 of the CUP.
PolyFiX: Lessons learned from the NOEMA Wideband Correlator System
Creators: name: Gentaz, Oliver
Publisher: name: Zenodo
Year: 2019

description: In order to support the full 32GHz bandwidth delivered by the NOEMA 2SB dual polarization receivers, a new wideband correlator has been developed for the NOEMA interferometer. This system has been dubbed PolyFiX in reference to the Polyphase filtering and correlator FX architectures used within this last generation system.
This FPGA-based correlator can correlate up to four 8GHz IF bands from 12 antennas with a 2MHz spectral resolution in parallel with 128 spectral windows of 64MHz each at a 62.5KHz resolution. Higher resolution modes will be introduced in the near future thanks to the flexible configuration offered by FPGAs.
The architecture is well suited to provide digital phased-array capability as well where the NOEMA 12 antennas will be phased together and standard VLBI sub-bands will be delivered.
The correlator's capabilities will be described in some detail and challenges in A/D conversion, data transport and data processing that represent wider bandwidths will be outlined.
Noisy quadrature of squeezed light and laser cooling
Creators: name: Saxena, G. M.
name: Agarwal, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The laser cooling of atoms is a result of the combined effect of doppler shift, light shift and polarization gradient. These are basically undesirable phenomena. However, they combine gainfully in realizing laser cooling and trapping of the atoms. In this paper we discuss the laser cooling of atoms in the presence of the squeezed light with the decay of atomic dipole moment into noisy quadrature. We show that the higher decay rate of the atomic dipole moment into the noisy quadrature, which is also an undesirable effect, may contribute in realizing larger cooling force vis-a-vis normal laser light.
Lycosa Latreille 1804
Creators: name: Steinpress, Igor Armiach
name: Cohen, Mira
name: Pétillon, Julien
name: Chipman, Ariel D.
name: Gavish-Regev, Efrat
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Lycosidae
Lycosa

description: Genus Lycosa Latreille, 1804
Type species
Lycosa tarantula (Linnaeus, 1758).
Diagnosis
Large lycosids; anterior eye row clearly shorter than PME; epigyne septum tongue-shaped or rhomboid, confined to posterior half of epigyne; septal pedicel reduced or absent; TA wide and flat, ending with a distal process (TAT) directed retrolaterally to posteriorly (Zyuzin & Logunov 2000).
Description
Large lycosids (body length over 12 mm). Carapace sloping posterior to ocular area. Carapace margins with thick pubescence (Zyuzin 1990). Chelicerae with three retromarginal teeth. AER recurved. PME wider than AER. Abdomen venter usually with black markings. Sexual dimorphism weak. Posterior part of epigynal septum widened and clearly outlined. Septal pedicle fused with genital groove or wholly absent. This contrasts with other large Lycosinae (Hogna, Geolycosa), having a clearly outlined pedicle. Cymbium asymmetrical. Tegular apophysis wide and flat, with an elongated distal process, directed retrolaterally to posteriorly. Embolus thin, long, with narrow epiconductor.
Natural history
Generalist predators, typical of open habitats. Most species are burrowing, but some seem to be vagrant (Planas et al. 2013). The burrow entrance is usually modified with a door or a turret (an elevated structure made of silk and vegetation, surrounding the entrance). Activity is mostly nocturnal. Reproductive season recorded in the summer and autumn.
Distribution
Known from the Mediterranean Basin, eastern Europe, Middle East, central Asia and Japan (World Spider Catalog 2022).
Relationships
Lycosa s. str. is related to Hogna Simon 1885 (Piacentini & Ramírez 2019). According to Zyuzin & Logunov (2000), Lycosa is closely allied with Alopecosa pictilis (Emerton, 1885), A. sibirica (Kulczyn´ski, 1908), A. solivaga (Kulczyn´ski, 1901) and A. hirtipes (Kulczyn´ski, 1908).
description: Published as part of Steinpress, Igor Armiach, Cohen, Mira, Pétillon, Julien, Chipman, Ariel D. & Gavish-Regev, Efrat, 2022, Lycosa Latreille, 1804 (Araneae, Lycosidae) of Israel, with a note on Geolycosa Montgomery, 1904, pp. 1-54 in European Journal of Taxonomy 832 (1) on pages 13-14, DOI: 10.5852/ejt.2022.832.1877, http://zenodo.org/record/6916850
Jozso's Legacy: Chemical and Kinetic Freeze-out in Heavy-Ion Collisions
Creators: name: Heinz, Ulrich W.
name: Kestin, Gregory
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We review J. Zimanyi's key contributions to the theoretical understanding of dynamical freeze-out in nuclear collisions and their subsequent applications to ultra-relativistic heavy-ion collisions, leading to the discovery of a freeze-out hierarchy where chemical freeze-out of hadron yields precedes the thermal decoupling of their momentum spectra. Following Zimanyi's lines of reasoning we show that kinetic freeze-out necessarily leads to a dependence of the corresponding freeze-out temperature on collision centrality. This centrality dependence can be predicted within hydrodynamic models, and for Au+Au collisions at RHIC this prediction is shown to reproduce the experimentally observed centrality dependence of the thermal decoupling temperature, extracted from hadron momentum spectra. The fact that no such centrality dependence is observed for the chemical decoupling temperature, extracted from the hadron yields measured in these collisions, excludes a similar kinetic interpretation of the chemical decoupling process. We argue that the chemical decoupling data from Au+Au collisions at RHIC can only be consistently understood if the chemical freeze-out process is driven by a phase transition, and that the measured chemical decoupling temperature therefore measures the critical temperature of the quark-hadron phase transition. We propose additional experiments to further test this interpretation.
description: 13 pages. Talk given at the Zimanyi 75 Memorial Workshop on "Hadronic and Quark Matter", Budapest, July 2-4, 2007. To appear in a special volume of The European Physical Journal (Special Topics)
Signal and Data Transport for the SKA
Creators: name: Grainge, Keith
Publisher: name: Zenodo
Year: 2019

description: The SKA will be a transformative radio telescope that will address fundamental unanswered questions about our Universe. The SKA will require high precision timing and will then generate unprecedented volumes of data. The Signal and Data Transport (SADT) Consortium has design the systems that address these requirements. I will discuss the design work undertaken by the SADT Consortium to address these challenges through three separate networks: • A network to transport the astronomical data (tens of Terabits per second), first from the receivers to a Central Signal Processor and then secondly transport the resultant data out of the telescope site to the Science Data Processor • A clock ensemble that provides a high accuracy timescale that can be tied to global UTC and a network that then distributes a reference frequency and absolute time to each antenna • A network that passes control, monitor and service data throughout the telescope.
Laser nonenhancement of beta decay
Creators: name: Blevis, Ira
Publisher: name: University of British Columbia
Year: 2010

description: The possibility of influencing nuclear beta decay with high intensity, low frequency electromagnetic radiation (such as from a laser) is examined. The motion of an electron in an e.m. field is found first according to classical mechanics and then according to quantum mechanics. The latter discussion yields the Volkov solution for the electron wave function which is then used in a beta decay calculation patterned after Becker et al. In this calculation the Volkov solution is substituted for the electron plane wave factor in the transition amplitude in the Fermi theory of beta decay. The ratio of total decay rates R= W with laser/W no laser is numerically evaluated with a computer for the case of ³H (and some others) where the emphasis is on only allowed nuclear transitions and on phase space considerations. No change in rate to 1% accuracy is found, for the range of the dimensionless field strength intensity parameter V =ea/m ε [. 3 ,7 ], or the photon energy range ш e [2,8]eV. This range of v corresponds to the range in laser intensity of I ε [3x10¹⁷|,2x10²⁰]W/cm². The endpoints of the neutrino spectrum are found to be unmodified by the laser (both analytically and numerically). Thus this calculation suggests that the basic beta decay process is not affected by laser irradiation.
Term Interrelations and Trends in Software Engineering
Creators: name: Baskararajah, Janusan
name: Zhang, Lei
name: Miranskyy, Andriy
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: Information Retrieval (cs.IR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences
subject: D.2; I.2.7; K.2

description: The Software Engineering (SE) community is prolific, making it challenging for experts to keep up with the flood of new papers and for neophytes to enter the field. Therefore, we posit that the community may benefit from a tool extracting terms and their interrelations from the SE community's text corpus and showing terms' trends. In this paper, we build a prototyping tool using the word embedding technique. We train the embeddings on the SE Body of Knowledge handbook and 15,233 research papers' titles and abstracts. We also create test cases necessary for validation of the training of the embeddings. We provide representative examples showing that the embeddings may aid in summarizing terms and uncovering trends in the knowledge base.
description: Shortened version appeared in proceedings of ESEC/FSE 2021
Monitoring of Particle Flux and LET Variations with Pulse Stretching Inverters
Creators: name: Andjelkovic, Marko
name: Chen, Junchao
name: Simevski, Aleksandar
name: Schrape, Oliver
name: Krstic, Milos
name: Kraemer, Rolf
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Systems and Control (eess.SY)
subject: FOS: Physical sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This work investigates the use of pulse stretching inverters for monitoring the variation of flux and Linear Energy Transfer (LET) of energetic particles. The basic particle detector consists of two cascaded pulse stretching (skew-sized) inverters designed in CMOS technology, and the required sensing area is obtained by connecting multiple two-inverter pulse stretching cells in parallel, and employing the required number of parallel arrays. The particle strikes are detected in terms of the Single Event Transients (SETs), and the detector provides the information on the SET count rate and SET pulse width variation, from which the particle flux and LET can be determined. The main advantage of the proposed solution is the possibility to sense the LET variations using purely digital processing logic. The SPICE simulations done on IHP 130 nm bulk CMOS technology have shown that the SET pulse width at the output of detector changes by 550 ps over the LET range from 1 to 100 MeVcm2mg-1. The proposed solution is intended to operate as an on-chip particle detector within the self-adaptive multiprocessing systems.