cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Metal Protein Semiconductor Structure
Creators: name: Dash, Ajit
name: Sandipan Mallik
Publisher: name: figshare
Year: 2020
Subjects: subject: 90699 Electrical and Electronic Engineering not elsewhere classified
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The present invention consists of a Metal-Protein-Semiconductor Structure where a protein layer has been used as the dielectric instead of the traditional oxide layer as used in conventional metal-oxide-semiconductor structure as frequency dependent variable capacitor for high frequency circuit applications. Protein layer (121), which can be independently selected from any commercially available animal and plant protein, the substrate may be a p-type (131) and the n-type (132) semiconductor independently selected from any elemental or compound semiconductor, top metal electrode (11) and bottom contact (141 ), which can be independently selected from the group of Al, Au, Pt, Pd~ Ag or Ni. The devices have been electrically characterized and found resembling the characteristics of the conventional devices.
GPUMCD: a new GPU-oriented Monte Carlo dose calculation platform
Creators: name: Hissoiny, Sami
name: Bouchard, Hugo
name: Ozell, Benoît
name: Després, Philippe
Publisher: name: arXiv
Year: 2011
Subjects: subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: Purpose: Monte Carlo methods are considered the gold standard for dosimetric computations in radiotherapy. Their execution time is however still an obstacle to the routine use of Monte Carlo packages in a clinical setting. To address this problem, a completely new, and designed from the ground up for the GPU, Monte Carlo dose calculation package for voxelized geometries is proposed: GPUMCD. Method : GPUMCD implements a coupled photon-electron Monte Carlo simulation for energies in the range 0.01 MeV to 20 MeV. An analogue simulation of photon interactions is used and a Class II condensed history method has been implemented for the simulation of electrons. A new GPU random number generator, some divergence reduction methods as well as other optimization strategies are also described. GPUMCD was run on a NVIDIA GTX480 while single threaded implementations of EGSnrc and DPM were run on an Intel Core i7 860. Results : Dosimetric results obtained with GPUMCD were compared to EGSnrc. In all but one test case, 98% or more of all significant voxels passed a gamma criteria of 2%-2mm. In terms of execution speed and efficiency, GPUMCD is more than 900 times faster than EGSnrc and more than 200 times faster than DPM, a Monte Carlo package aiming fast executions. Absolute execution times of less than 0.3 s are found for the simulation of 1M electrons and 4M photons in water for monoenergetic beams of 15 MeV, including GPU-CPU memory transfers. Conclusion : GPUMCD, a new GPU-oriented Monte Carlo dose calculation platform, has been compared to EGSnrc and DPM in terms of dosimetric results and execution speed. Its accuracy and speed make it an interesting solution for full Monte Carlo dose calculation in radiation oncology.
description: Accepted for publication in Medical Physics
Local Thermal Equilibrium in Quantum Field Theory on Flat and Curved Spacetimes
Creators: name: Solveen, Christoph
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences
subject: 81T20, 81T28, 82C99

description: The existence of local thermal equilibrium (LTE) states for quantum field theory in the sense of Buchholz, Ojima and Roos is discussed in a model-independent setting. It is shown that for spaces of finitely many independent thermal observables there always exist states which are in LTE in any compact region of Minkowski spacetime. Furthermore, LTE states in curved spacetime are discussed and it is observed that the original definition of LTE on curved backgrounds given by Buchholz and Schlemmer needs to be modified. Under an assumption related to certain unboundedness properties of the pointlike thermal observables, existence of states which are in LTE at a given point in curved spacetime is established. The assumption is discussed for the sets of thermal observables for the free scalar field considered by Schlemmer and Verch.
description: 16 pages, some minor changes and clarifications; section 4 has been shortened as some unnecessary constructions have been removed
title: A New Proposed CAD System for Precise Diagnosis of Prostate Cancer by Estimating Diffusion Parameters from IVIM Model
Creators: name: Abou El-Ghar, Mohamed Ebrahem
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Urinary Tract / Bladder
subject: MR-Functional imaging
subject: Computer Applications-Detection, diagnosis
subject: Cancer

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: Prostate cancer is one of the most common types of cancer among men, and early detection and accurate diagnosis are crucial for effective treatment. One of the most widely used imaging techniques for prostate cancer diagnosis is multiparametric...
The Fermi Bubbles: Giant, Multi-Billion-Year-Old Reservoirs of Galactic Center Cosmic Rays
Creators: name: Crocker, Roland M.
name: Aharonian, Felix
Publisher: name: arXiv
Year: 2010
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Recently evidence has emerged for enormous features in the gamma-ray sky observed by the Fermi-LAT instrument: bilateral `bubbles' of emission centered on the core of the Galaxy and extending to around 10 kpc above and below the Galactic plane. These structures are coincident with a non-thermal microwave `haze' found in WMAP data and an extended region of X-ray emission detected by ROSAT. The bubbles' gamma-ray emission is characterised by a hard and relatively uniform spectrum, relatively uniform intensity, and an overall luminosity ~4 x 10^37 erg/s, around one order of magnitude larger than their microwave luminosity while more than order of magnitude less than their X-ray luminosity. Here we show that the bubbles are naturally explained as due to a population of relic cosmic ray protons and heavier ions injected by processes associated with extremely long timescale (>~8 Gyr) and high areal density star-formation in the Galactic center.
description: Accepted for publication in Phys.Rev.Lett. 4 pages, 2 figures, brief textual revisions, conclusions unchanged
title: Validation of a Deep Learning AI-based Software for Automated ASPECTS Assessment
Creators: name: Ayobi, Angela
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Artificial Intelligence
subject: Neuroradiology brain
subject: CT
subject: CAD
subject: Computer Applications-Detection, diagnosis
subject: Ischaemia / Infarction

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: Stroke is a major disease of the 21st century. Despite significant improvements in primary prevention and treatment, stroke remains a devastating disease and it is considered an absolute emergency [1, 2]. Ischemic stroke (IS), the most common type...
Projected wave function study of Z2 spin liquids on the kagome lattice for the spin-1/2 quantum Heisenberg antiferromagnet
Creators: name: Iqbal, Yasir
name: Becca, Federico
name: Poilblanc, Didier
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Motivated by recent density-matrix renormalization group (DMRG) calculations [Yan, Huse, and White, Science 332, 1173 (2011)], which claimed that the ground state of the nearest-neighbor spin-1/2 Heisenberg antiferromagnet on the kagome lattice geometry is a fully gapped spin liquid with numerical signatures of Z2 gauge structure, and a further theoretical work [Lu, Ran, and Lee, Phys. Rev. B 83, 224413 (2011)], which gave a classification of all Schwinger-fermion mean-field fully symmetric Z2 spin liquids on the kagome lattice, we have thoroughly studied Gutzwiller-projected fermionic wave functions by using quantum variational Monte Carlo techniques, hence implementing exactly the constraint of one fermion per site. In particular, we investigated the energetics of all Z2 candidates (gapped and gapless) that lie in the neighborhood of the energetically competitive U(1) gapless spin liquids. By using a state-of-the-art optimization method, we were able to conclusively show that the U(1) Dirac state is remarkably stable with respect to all Z2 spin liquids in its neighborhood, and in particular for opening a gap toward the so-called Z2[0,π]β state, which was conjectured to describe the ground state obtained by the DMRG method. Finally, we also considered the addition of a small second nearest-neighbor exchange coupling of both antiferromagnetic and ferromagnetic type, and obtained similar results, namely, a U(1) Dirac spin-liquid ground state.
description: 5 pages + supplementary material (2 pages), 3 figures, 1 Table: Final published version, selected as an Editor's suggestion
title: Discrepancies between radiology specialists and residents in fracture detection from radiographs
Creators: name: Huhtanen, Jarno
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Anatomy
subject: Extremities
subject: Musculoskeletal bone
subject: Conventional radiography
subject: Observer performance
subject: Trauma

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: Healthcare is based on high quality of patient treatment, and to ensure this quality, the competence of healthcare professionals needs to be systematically evaluated. The aim of this study was to determine radiology specialists and residents...
Hysteresis of Electronic Transport in Graphene Transistors
Creators: name: Wang, Haomin
name: Wu, Yihong
name: Cong, Chunxiao
name: Shang, Jingzhi
name: Yu, Ting
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Graphene field effect transistors commonly comprise graphene flakes lying on SiO2 surfaces. The gate-voltage dependent conductance shows hysteresis depending on the gate sweeping rate/range. It is shown here that the transistors exhibit two different kinds of hysteresis in their electrical characteristics. Charge transfer causes a positive shift in the gate voltage of the minimum conductance, while capacitive gating can cause the negative shift of conductance with respect to gate voltage. The positive hysteretic phenomena decay with an increase of the number of layers in graphene flakes. Self-heating in helium atmosphere significantly removes adsorbates and reduces positive hysteresis. We also observed negative hysteresis in graphene devices at low temperature. It is also found that an ice layer on/under graphene has much stronger dipole moment than a water layer does. Mobile ions in the electrolyte gate and a polarity switch in the ferroelectric gate could also cause negative hysteresis in graphene transistors. These findings improved our understanding of the electrical response of graphene to its surroundings. The unique sensitivity to environment and related phenomena in graphene deserve further studies on nonvolatile memory, electrostatic detection and chemically driven applications.
description: 13 pages, 6 Figures
Correlation Widths in Quantum--Chaotic Scattering
Creators: name: Dietz, B.
name: Richter, A.
name: Weidenmueller, H. A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: An important parameter to characterize the scattering matrix S for quantum-chaotic scattering is the width Gamma_{corr} of the S-matrix autocorrelation function. We show that the "Weisskopf estimate" d/(2pi) sum_c T_c (where d is the mean resonance spacing, T_c with 0 <= T_c <= 1 the "transmission coefficient" in channel c and where the sum runs over all channels) provides a very good approximation to Gamma_{corr} even when the number of channels is small. That same conclusion applies also to the cross-section correlation function.
title: Added Value of an Artificial Intelligence Algorithm in Avoiding Missed Incidental Pulmonary Embolism in Routine Chest CT
Creators: name: Langius-Wiffen, Eline
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Artificial Intelligence
subject: Pulmonary vessels
subject: Thorax
subject: CT-Angiography
subject: Computer Applications-Detection, diagnosis
subject: Acute
subject: Embolism / Thrombosis

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: Acute pulmonary embolism (PE) is a common incidental finding on routine contrast-enhanced chest CT with a reported incidence of 1.3-4.6% in asymptomatic oncology patients [1]. Because of the potentially severe complications, like pulmonary...
Filosofia da Educação a Partir do Diálogo Contemporâneo entre Analíticos e Continentais
Creators: name: Piccolo Viero, Catia
name: Trevisan, Amarildo Luiz
name: Conte, Elaine
Publisher: name: abstracta
Year: 2021

description: O trabalho aborda questões bastante discutidas na contemporaneidade, buscando uma maior compreensão do pensamento filosófico na educação. Na tentativa de propor um entendimento da problemática em que se voltou a Filosofia da Educação, o estudo analisa as discussões controversas entre analíticos e continentais, reconhecendo em Habermas e Rorty a possibilidade de abandonar o pensamento idealista e subjetivo da tradição filosófica. O objetivo é refletir sobre as abordagens teóricas e metodológicas utilizadas nessas discussões, identificando as contribuições que a hermenêutica, o pragmatismo e a filosofia da linguagem podem viabilizar à educação, assinalando a necessidade de desenvolver mudanças nos modos de se pensar e gerir a formação. Em defesa de uma produção semântica para o estudo filosófico no processo de formação de professores, o texto demarca algumas críticas à filosofia da educação por estar voltada apenas para a filosofia continental (antes da virada lingüística), relatando a pretensão de redescobrir o sujeito educativo na linguagem. O estudo, voltado às discussões filosóficas mais atuais do mundo ocidental, pretende incitar a concretização das propostas de grandes aportes teóricos do pensamento, possibilitando repensar o modelo da pedagogia tradicional à luz de novos critérios de avaliação, desenvolvendo através da linguagem, um novo espírito para o estudo da filosofia da educação. Essa reabertura, permite repensar a imagem da filosofia contemporânea e suas implicações educacionais, facilitando a ultrapassagem dos limites conceituais das teorias filosóficas dogmáticas, presas ao historicismo, reconstruindo o cenário teórico baseado no entendimento pragmático e hermenêutico da situação atual.
description: abstracta, Bd. 1 Nr. 1 (2004)
Dusty Blastwaves of Two Young LMC Supernova Remnants: Constraints on Postshock Compression
Creators: name: Williams, Brian J.
name: Borkowski, Kazimierz J.
name: Reynolds, Stephen P.
name: Ghavamian, Parviz
name: Raymond, John C.
name: Long, Knox S.
name: Blair, William P.
name: Sankrit, Ravi
name: Smith, R. Chris
name: Points, Sean
name: Winkler, P. Frank
name: Hendrick, Sean P.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present results from mid-IR spectroscopic observations of two young supernova remnants (SNRs) in the Large Magellanic Cloud (LMC) done with the {\it Spitzer Space Telescope}. We imaged SNRs B0509-67.5 and B0519-69.0 with {\it Spitzer} in 2005, and follow-up spectroscopy presented here confirms the presence of warm, shock heated dust, with no lines present in the spectrum. We use model fits to {\it Spitzer} IRS data to estimate the density of the postshock gas. Both remnants show asymmetries in the infrared images, and we interpret bright spots as places where the forward shock is running into material that is several times denser than elsewhere. The densities we infer for these objects depend on the grain omposition assumed, and we explore the effects of differing grain porosity on the model fits. We also analyze archival {\it XMM-Newton} RGS spectroscopic data, where both SNRs show strong lines of both Fe and Si, coming from ejecta, as well as strong O lines, which may come from ejecta or shocked ambient medium. We use model fits to IRS spectra to predict X-ray O line strengths for various grain models and values of the shock compression ratio. For 0509-67.5, we find that compact (solid) grain models require nearly all O lines in X-ray spectra to originate in reverse-shocked ejecta. Porous dust grains would lower the strength of ejecta lines relative to those arising in the shocked ambient medium. In 0519-69.0, we find significant evidence for a higher than standard compression ratio of 12, implying efficient cosmic-ray acceleration by the blast wave. A compact grain model is favored over porous grain models. We find that the dust-to-gas mass ratio of the ambient medium is significantly lower than what is expected in the ISM.
description: Accepted for publication in ApJ. 47 pages, 16 figures
Model of flavor with quaternion symmetry
Creators: name: Aranda, Alfredo
name: Bonilla, Cesar
name: Ramos, Raymundo
name: Rojas, Alma D.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a renormalizable fermion mass model based on the symmetry $Q_4$ that accommodates all fermion masses and mixing angles in both the quark and lepton sectors. It requires the presence of only four SU(2) doublet scalar fields transforming non trivially under the flavor symmetry and the assumption of an alignment between first and second generation Yukawa couplings. No right-handed neutrinos are present in the model and neutrino masses are generated radiatively through the introduction of two additional SU(2) singlet fields charged under both hypercharge and lepton number.
description: 24 pages, 4 figures. Title changed to meet journal requirements. References added. Version to appear in Physical Review D
Non-equilibrium dynamics of the Bose-Hubbard model: A projection operator approach
Creators: name: Trefzger, C.
name: Sengupta, K.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We study the phase diagram and non-equilibrium dynamics, both subsequent to a sudden quench of the hopping amplitude $J$ and during a ramp $J(t)=Jt/τ$ with ramp time $τ$, of the Bose-Hubbard model at zero temperature using a projection operator formalism which allows us to incorporate the effects of quantum fluctuations beyond mean-field approximations in the strong coupling regime. Our formalism yields a phase diagram which provides a near exact match with quantum Monte Carlo results in three dimensions. We also compute the residual energy $Q$, the superfluid order parameter $Δ(t)$, the equal-time order parameter correlation function $C(t)$, and the wavefunction overlap $F$ which yields the defect formation probability $P$ during non-equilibrium dynamics of the model. We find that $Q$, $F$, and $P$ do not exhibit the expected universal scaling. We explain this absence of universality and show that our results compare well with recent experiments.
description: Replaced with the accepted version, added one figure. 4 pages, 4 figures, to appear in Phys. Rev. Lett
title: One or two screening readers? Using deep learning to predict difficulty of lesion characterization in mammography.
Creators: name: Verboom, Sarah
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Artificial Intelligence
subject: Breast
subject: Mammography
subject: Screening
subject: Cancer

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: In the Dutch National Breast Cancer Screening Programme, all mammograms are read independently by two breast screening radiologists. Interpretation difficulty could be split into lesion detection difficulty and lesion characterization difficulty....
Sentidos e Propriedades
Creators: name: Azambuja, Abílio
Publisher: name: abstracta
Year: 2021

description: This article proposes an interpretation of the sense/reference distinction, especially regarding predicates. According to the interpretation here presented, two predicates have the same reference and different senses when they are constituted by different properties that, when gathered by means of a linguistic expression, apply to a same group of objects.
description: abstracta, Bd. 1 Nr. 1 (2004)
Planetary Phase Variations of the 55 Cancri System
Creators: name: Kane, Stephen R.
name: Gelino, Dawn M.
name: Ciardi, David R.
name: Dragomir, Diana
name: von Braun, Kaspar
Publisher: name: arXiv
Year: 2011
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Characterization of the composition, surface properties, and atmospheric conditions of exoplanets is a rapidly progressing field as the data to study such aspects become more accessible. Bright targets, such as the multi-planet 55 Cancri system, allow an opportunity to achieve high signal-to-noise for the detection of photometric phase variations to constrain the planetary albedos. The recent discovery that that inner-most planet, 55 Cancri e, transits the host star introduces new prospects for studying this system. Here we calculate photometric phase curves at optical wavelengths for the system with varying assumptions for the surface and atmospheric properties of 55 Cancri e. We show that the large differences in geometric albedo allows one to distinguish between various surface models, that the scattering phase function cannot be constrained with foreseeable data, and that planet b will contribute significantly to the phase variation depending upon the surface of planet e. We discuss detection limits and how these models may be used with future instrumentation to further characterize these planets and distinguish between various assumptions regarding surface conditions.
description: 7 pages, 3 figures, accepted for publication in ApJ
title: Predictive characteristics of conventional CT exam for risk stratification in patients with primary gastrointestinal stromal tumor of the stomach.
Creators: name: Mitrovic, Milica
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Abdomen
subject: CT
subject: Diagnostic procedure
subject: Cancer

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: Our study demonstrates the importance of the morphological CT features of GISTs, which proved their significance in the risk stratification of these tumors. To our knowledge, there are several studies that investigated CT features in correlation to...
Development of a parallelized computational fluid dynamics solver for turbulent bubbly flows in complex geometries and its applications to various flow problems
Creators: name: Haji Mohammadi Sani Abadi, Mohammad
Publisher: name: University of British Columbia
Year: 2019

description: This thesis focuses on developing a computationally-efficient flow solver in the area of computational fluid dynamics. The contribution pertains to the mathematical and numerical development of solution techniques for simulating multiphase turbulent bubbly flows on parallel computers. In accomplishing this objective the following advances are obtained: 1) Development of a mathematical formulation to perform large-eddy simulation of the two-phase two-way coupled bubbly flows at low gas holdups in a purely Eulerian framework. 2) Development of a moving least squares reconstruction method for use in the sharp interface immersed boundary method for simulating flows in complex and moving geometries. In addition, an enhancement specific to incompressible flows is formulated and implemented that improves the solution accuracy and rate of convergence. The developed solver is used to make the following contributions to applied fluid mechanics: 1) Investigating the physics of a bubble column by efficiently characterizing the multiphase turbulent flow in terms of first and second-order statistics, turbulence kinetic energy and power spectral density. 2) Demonstrating how the discharge rate can be computed for a geometrically-complex axial pump via LES using the immersed boundary method. 3) Identifying the turbulence dynamics in the Taylor-Couette flow between concentric rotating cylinders. The research accomplishes this by using the developed flow solver to conduct several large-eddy simulations of Taylor-Couette flows, with the aim of characterizing the turbulent flow physics.
title: ÐÐ±ÐµÑÐ¿ÐµÑÐµÐ½Ð¸Ðµ Ð¸ Ð¿Ð¾Ð´Ð´ÐµÑÐ¶Ð°Ð½Ð¸Ðµ ÐºÐ¾Ð½ÐºÑÑÐµÐ½ÑÐ¾ÑÐ¿Ð¾ÑÐ¾Ð±Ð½Ð¾ÑÑÐ¸ Ð¿ÑÐ¾Ð´ÑÐºÑÐ¸Ð¸, Ð²ÑÐ¿ÑÑÐºÐ°ÐµÐ¼Ð¾Ð¹ ÐÐÐ Â«ÐÐ°Ð·Ð¿ÑÐ¾Ð¼Ð½ÐµÑÑÑ Ð¡ÐµÐ²ÐµÑÐ¾-ÐÐ°Ð¿Ð°Ð´Â»
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Support and maintenance of product competitiveness, produced by CJSC Â«Gazpromneft North-WestÂ»
Creators: name: ÐÐ¾ÑÐ¸ÑÐ¾Ð²Ð°, ÐÐ»ÐµÐ½Ð°
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: 2019
Subjects: ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ°Ñ Ð¾ÑÐµÐ½ÐºÐ°
ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÐºÐ°
ÐºÐ¾Ð½ÐºÑÑÐµÐ½ÑÐ¾ÑÐ¿Ð¾ÑÐ¾Ð±Ð½Ð¾ÑÑÑ
Ð°Ð½Ð°Ð»Ð¸Ð· Ð¸ Ð´Ð¸Ð°Ð³Ð½Ð¾ÑÑÐ¸ÐºÐ°
swot Ð¸ pest Ð°Ð½Ð°Ð»Ð¸Ð·
ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ¸Ðµ ÑÐ°ÑÑÐµÑÑ
economic assessment
economy
competitiveness
analysis and diagnostics
swot and pest analysis
economic calculations

description: ÐÐ±ÑÐµÐºÑÐ¾Ð¼ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ ÑÐ²Ð»ÑÐµÑÑÑ ÐÐÐ Â«ÐÐ°Ð·Ð¿ÑÐ¾Ð¼Ð½ÐµÑÑÑ Ð¡ÐµÐ²ÐµÑÐ¾-ÐÐ°Ð¿Ð°Ð´Â».
Ð¦ÐµÐ»ÑÑ Ð²ÑÐ¿ÑÑÐºÐ½Ð¾Ð¹ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÑ ÑÐ²Ð»ÑÐµÑÑÑ Ð°Ð½Ð°Ð»Ð¸Ð· ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ¸Ñ Ð¿Ð¾ÐºÐ°Ð·Ð°ÑÐµÐ»ÐµÐ¹ ÑÐ¾Ð·ÑÐ¹ÑÑÐ²ÐµÐ½Ð½Ð¾Ð¹ Ð´ÐµÑÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸ Ð¿ÑÐµÐ´Ð¿ÑÐ¸ÑÑÐ¸Ñ ÐÐÐ Â«ÐÐ°Ð·Ð¿ÑÐ¾Ð¼Ð½ÐµÑÑÑ Ð¡ÐµÐ²ÐµÑÐ¾-ÐÐ°Ð¿Ð°Ð´Â».
ÐÐ° Ð¾ÑÐ½Ð¾Ð²Ðµ Ð°Ð½Ð°Ð»Ð¸Ð·Ð° ÑÑÐ½ÐºÐ° Ð±ÑÐ»Ð¸ Ð²ÑÑÐ²Ð»ÐµÐ½Ñ ÐºÐ¾Ð½ÐºÑÑÐµÐ½ÑÑ Ð² ÑÐµÐ³Ð¼ÐµÐ½ÑÐµ ÑÐµÐ°Ð»Ð¸Ð·Ð°ÑÐ¸Ð¸ Ð½ÐµÑÑÐ¸ Ð¸ Ð½ÐµÑÑÐµÐ¿ÑÐ¾Ð´ÑÐºÑÐ¾Ð².
ÐÑÐ»Ð¾ Ð¿ÑÐµÐ´Ð»Ð¾Ð¶ÐµÐ½Ð¾ 2 Ð¼ÐµÑÐ¾Ð¿ÑÐ¸ÑÑÐ¸Ñ: ÑÑÑÐ¾Ð¸ÑÐµÐ»ÑÑÑÐ²Ð¾ Ð½Ð¾Ð²Ð¾Ð¹ ÐÐÐÐÐ¡ Ð¸ ÑÐµÐ¾ÑÐ³Ð°Ð½Ð¸Ð·Ð°ÑÐ¸Ñ ÐÐÐ¡ Ð² ÐÐÐÐÐ¡, ÐºÐ¾ÑÐ¾ÑÑÐµ Ð½Ð°Ð¿ÑÐ°Ð²Ð»ÐµÐ½Ñ Ð½Ð° ÑÐ²ÐµÐ»Ð¸ÑÐµÐ½Ð¸Ðµ ÐºÐ¾Ð½ÐºÑÑÐµÐ½ÑÐ¾ÑÐ¿Ð¾ÑÐ¾Ð±Ð½Ð¾ÑÑÐ¸ ÐºÐ¾Ð¼Ð¿Ð°Ð½Ð¸Ð¸, Ð¿ÑÐ¸Ð²Ð»ÐµÑÐµÐ½Ð¸Ðµ Ð½Ð¾Ð²ÑÑ ÐºÐ»Ð¸ÐµÐ½ÑÐ¾Ð², ÑÐ½Ð¸Ð¶ÐµÐ½Ð¸Ðµ Ð·Ð°ÑÑÐ°Ñ, Ð²Ð½ÐµÐ´ÑÐµÐ½Ð¸Ðµ Ð½Ð¾Ð²ÑÑ Ð±Ð¸Ð·Ð½ÐµÑ-Ð¿ÑÐ¾ÑÐµÑÑÐ¾Ð² Ð² ÐºÐ¾Ð¼Ð¿Ð°Ð½Ð¸Ñ ÐÐÐ Â«ÐÐ°Ð·Ð¿ÑÐ¾Ð¼Ð½ÐµÑÑÑ Ð¡ÐµÐ²ÐµÑÐ¾-ÐÐ°Ð¿Ð°Ð´Â».
Ð Ð°ÑÑÑÐ¸ÑÐ°Ð½Ñ Ð²ÑÐµ ÑÐ°ÑÑÐ¾Ð´Ñ, Ð´Ð¾ÑÐ¾Ð´Ñ, Ð½Ð°Ð»Ð¾Ð³Ð¸ Ð´Ð»Ñ Ð¿Ð¾Ð»Ð½Ð¾Ð¹ Ð¾ÑÐµÐ½ÐºÐ¸ Ð²Ð°Ð¶Ð½Ð¾ÑÑÐ¸ Ð¿ÑÐµÐ´Ð»Ð°Ð³Ð°ÐµÐ¼ÑÑ Ð¼ÐµÑÐ¾Ð¿ÑÐ¸ÑÑÐ¸Ð¹.
description: The object of the study is CJSC Gazpromneft North-West.
The purpose of the final qualifying work is the analysis of the economic indicators of the economic activity of the company CJSC Gazpromneft North-West. Based on market analysis, competitors were identified in the segment of oil and oil products sales.
Two measures were proposed: the construction of a new CNG station and the reorganization of gas stations at CNG stations that are aimed at increasing the company's competitiveness, attracting new customers, reducing costs, introducing new business processes to Gazpromneft North-West.
All expenses, incomes, taxes are calculated to fully assess the importance of the proposed activities.
title: Diagnostic value of [18F]-FDG-PET-CT imaging in VAD infection
Creators: name: Hosse, Clarissa
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Cardiac
subject: PET-CT
subject: Surgery
subject: Cardiac Assist Devices

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: Heart failure is a major cause of morbidity and mortality and the lifetime risk of heart failure at age over 40 is rising over the last decades [1]. Meeting the increasing demand for transplant organs remains a challenge. Ventricular assist devices...
Explicação e Causação
Creators: name: Mendonça, Wilson
Publisher: name: abstracta
Year: 2021

description: The paper argues against the current view according to which there is a clear dichotomy between causation and explanation. The first is usually conceived as an extensional relation connecting particulars individuated non-intentionally, while the second would concern only rational, intensional links between true propositions (facts). Close examination of the particularistic strategy employed to account for the way causal explanation depends ontologically on causation shows that it fails in at least two cases: (i) explanations involving negative facts and (ii) explanations by stative predications. This also reveals that the usual assumption of token-states as a new type of particular causes designated by the nominalization of the sentential expression of stative facts is not independently motivated. Moreover it goes against the plausible distinction between enabling conditions and triggering causes. The paper closes with the claim that facts can be genuine causes and effects.
description: abstracta, Bd. 1 Nr. 1 (2004)
Localization in one dimensional lattices with non-nearest-neighbor hopping: Generalized Anderson and Aubry-André models
Creators: name: Biddle, J.
name: Priour, D. J.
name: Wang, B.
name: Sarma, S. Das
Publisher: name: arXiv
Year: 2010
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the quantum localization phenomena of noninteracting particles in one-dimensional lattices based on tight-binding models with various forms of hopping terms beyond the nearest neighbor, which are generalizations of the famous Aubry-André and noninteracting Anderson model. For the case with deterministic disordered potential induced by a secondary incommensurate lattice (i.e. the Aubry-André model), we identify a class of self dual models, for which the boundary between localized and extended eigenstates are determined analytically by employing a generalized Aubry-André transformation. We also numerically investigate the localization properties of non-dual models with next-nearest-neighbor hopping, Gaussian, and power-law decay hopping terms. We find that even for these non-dual models, the numerically obtained mobility edges can be well approximated by the analytically obtained condition for localization transition in the self dual models, as long as the decay of the hopping rate with respect to distance is sufficiently fast. For the disordered potential with genuinely random character, we examine scenarios with next-nearest-neighbor hopping, exponential, Gaussian, and power-law decay hopping terms numerically. We find that the higher order hopping terms can remove the symmetry in the localization length about the energy band center compared to the Anderson model. Furthermore, our results demonstrate that for the power-law decay case, there exists a critical exponent below which mobility edges can be found. Our theoretical results could, in principle, be directly tested in shallow atomic optical lattice systems enabling non-nearest-neighbor hopping.
description: 18 pages, 24 figures updated with additional references
A Filosofia da Ciência sob o Signo dos Science Studies
Creators: name: Videira, Antônio Augusto
Publisher: name: abstracta
Year: 2021

description: This paper is about the reasons for the impasse in contemporary philosophy of science. This is related to the fact that philosophy of science is no longer supposed to be responsible for the legitimacy of science as a special kind of knowledge. In face of this, it is presented the main features of a recent conception of science – the Science Studies – which seems to be more promising than earlier meta-scientific views. The philosophical agenda of the Science Studies takes into consideration the results obtained from recent historiography of science over the last thirty years.
description: abstracta, Bd. 2 Nr. 1 (2005)
Exploring the reactivity of nickel in the formation and scission of C-X (X = C, N, O, S) bonds
Creators: name: Chiu, Wei Ling
Publisher: name: University of British Columbia
Year: 2021

description: In this Thesis, we explore the reactivity of organometallic complexes of nickel towards activating bonds in esters, thioesters, and oxaziridines, as well as study the mechanism by which nickel mediates the trifluoromethylthiolation of aryl chlorides. Chapter 1 delves into modern developments in activating and forming C–F bonds using group 10 transition metal complexes. Emphasis is placed on the challenges and strategies employed, such as ligand design and additive choice, to achieve selective C-F bond activation and formation. In Chapter 2, we explore the reactivity of a low valent nickel complex with esters and thioesters. Stoichiometric cross-coupling of thioesters proceeds via initial C(acyl)-S bond insertion by nickel, followed by transmetallation with phenylboronic acid to form thioethers. Esters react via C(aryl)-O bond insertion and transmetallation to afford heterobiaryls. We discuss how our attempts at rendering the above transformations catalytic led to the identification of nickel complexes that prevent catalytic turnover. We also collaborate with the Kennepohl group at UBC to study the degree of Ni(0) versus Ni(II) character in a series of bisphosphine nickel complexes, obtaining evidence that the bonding in the Ni π-complexes exhibits major backbonding from the bisphosphine ligand with minor contributions from σ-bonding. In Chapter 3, we show that nickel can cleave the weak N–O bond in oxaziridines to generate a variety of organonickel complexes. We study the fragmentation of an oxazanickelacyclobutane and test the potential catalytic applications of the complexes toward the synthesis of amides and oxazoles. However, we observe the formation of nickel complexes that are thermodynamic sinks which impede catalysis. In Chapter 4, we seek to uncover the mechanism of the Ni-catalyzed trifluoromethylthiolation of aryl chlorides using AgSCF₃. using a combination of stoichiometric experiments, cyclic voltammetry, and NMR spectroscopic studies. We identify a major side reaction that forms a nickel fluoride complex and obtain evidence that suggests a pathway involving inner sphere electron transfer from silver to nickel. By studying the reactivity of nickel complexes and their roles in catalytic reactions, we hope to inform scientists on improved ligand design, substrate choice, and reaction conditions that would lead to more efficient catalysis.
title: The value of inter-thread CT values in assessing the stability of lumbar internal fixation: a porcine spine experiment
Creators: name: Xu, Shaochun
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Artificial Intelligence
subject: Bones
subject: Musculoskeletal spine
subject: CT
subject: CT-High Resolution
subject: Image manipulation / Reconstruction
subject: Dilation
subject: Statistics
subject: FOS: Mathematics
subject: Surgery
subject: Artifacts
subject: Osteoporosis
subject: Trauma

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: To investigate the feasibility of inter-thread CT values to assess the degree of pedicle screw loosening after porcine spine lumbar internal fixation, using virtual monoenergetic image (VMI) combined orthopedic metal artifact reduction algorithm...
title: When reality is not what it seems. The virtual colonoscopy and the very unusual findings.
Creators: name: Testa, Francesco
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Abdomen
subject: Colon
subject: Gastrointestinal tract
subject: CT
subject: CT-Colonography
subject: Colonography CT
subject: Diagnostic procedure
subject: Cancer
subject: Hernia
subject: Obstruction / Occlusion

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: The virtual colonoscopy was born as a radiologic mirroring of optical colonoscopy, but we must remember that it is in every way a CT method allowing to see well beyond the wall relief. The low dose and the absence of i.v. contrast medium basic...
Conductance through quantum wires with Levy-type disorder: universal statistics in anomalous quantum transport
Creators: name: Falceto, Fernando
name: Gopar, Victor A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In this letter we study the conductance G through one-dimensional quantum wires with disorder configurations characterized by long-tailed distributions (Levy-type disorder). We calculate analytically the conductance distribution which reveals a universal statistics: the distribution of conductances is fully determined by the exponent αof the power-law decay of the disorder distribution and the average < ln G >, i.e., all other details of the disorder configurations are irrelevant. For 0< α< 1 we found that the fluctuations of ln G are not self-averaging and < ln G > scales with the length of the system as L^α, in contrast to the predictions of the standard scaling-theory of localization where ln G is a self-averaging quantity and < ln G > scales linearly with L. Our theoretical results are verified by comparing with numerical simulations of one-dimensional disordered wires.
description: Published version. 5 pages, 4 figures
Universalismo e Particularismo nas Discussões Modernas
Creators: name: Rodrigues, Fernando
Publisher: name: abstracta
Year: 2021

description: In this paper I will discuss the role of national identity in the light of modern political and moral theories. My strategy here is threefold: firstly, I will present an overview of pre-modern theories of rights and duties of individuals, and then show how they fail to make sense of the notions of freedom and equality (of rights); secondly, I will introduce modern political and moral theories (more specifically, social contract theories) as an outstanding alternative to those ones, given the paradigm of values established by modern society; thirdly, I will argue against the supposed universality or objectivity of modern political and moral theories, taking into account the role of national identity.
description: abstracta, Bd. 2 Nr. 1 (2005)
title: Systematic analysis of perfusion parameters to determine predictivity of underlying etiology in internal carotid artery occlusions
Creators: name: Weiß, Daniel
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: CNS
subject: Interventional vascular
subject: Neuroradiology brain
subject: CT
subject: Recanalisation
subject: Arteriosclerosis
subject: Dissection
subject: Embolism / Thrombosis

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: Occlusions of the internal carotid artery (ICA) may be caused by dissection, cardioembolic or macroangiopathic pathogenesis, which partially influences the treatment (1-2) (Fig. 1) Inferring the underlying etiology in computed tomography angiography...
Pseudo-Taylor expansions and the Carathéodory-Fejér problem
Creators: name: Agler, Jim
name: Lykova, Zinaida A.
name: Young, N. J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 30E05, 30E25

description: We give a new solvability criterion for the boundary Carathéodory-Fejér problem: given a point $x \in \mathbb{R}$ and, a finite set of target values $a^0,a^1,...,a^n \in \mathbb{R}$, to construct a function $f$ in the Pick class such that the limit of $f^{(k)}(z)/k!$ as $z \to x$ nontangentially in the upper half plane is $a^k$ for $k= 0,1,...,n$. The criterion is in terms of positivity of an associated Hankel matrix. The proof is based on a reduction method due to Julia and Nevanlinna.
description: 18 pages
title: Evaluation of resident education in radiology: a European perspective
Creators: name: Hirvonen, Jussi
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Management
subject: Professional issues
subject: Experimental
subject: Education
subject: eLearning
subject: Health policy and practice
subject: Education and training

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: The field of medical education is rapidly changing from traditional knowledge-based education to competency-based education (CBE) that complements substance knowledge with generic competencies. As a result, in addition to traditional forms of...
Sobre a Concepção da Verdade em Tarski
Creators: name: Azambuja, Abílio
Publisher: name: abstracta
Year: 2021

description: The aim of this paper is to investigate whether Tarski’s truth definition explains the notion of truth as correspondence with reality and whether it is really a semantic definition of truth. I defend the view that, although Tarski succeeded in the task of constructing correct and adequate definitions, according to his own criteria of correctness and adequateness, the definitions obtained by his method neither are explanations of the main point of a correspondence theory of truth, the relationship between language and reality on which depends the truth of a sentence, nor can be considered genuinely semantic.
description: abstracta, Bd. 2 Nr. 1 (2005)
Mental Explicitness: The Case of Representational Contents
Creators: name: Steiner, Pierre
Publisher: name: abstracta
Year: 2021

description: This paper aims at answering the question “When is informational content explicitly represented in a (human) cognitive system?”. I first distinguish the explicitness this question is about from other kinds of explicitness that are currently investigated in philosophy of mind, and situate the components of the question within the various conceptual frameworks that are used to study mental representations. I then present and criticize, on conceptual and empirical grounds, two basic ways of answering the question, the first one coming from the classical computational theory of mind, the latter one issued from a procedural conception of informational contents. I then argue for a new answer to the initial question, an answer that retains some valuable insights of the criticized theories, but which underlines the importance and the interpretational source of the distinctiveness proper to explicitly represented contents.
description: abstracta, Bd. 2 Nr. 1 (2005)
Extreme values of the Dedekind $Ψ$ function
Creators: name: Solé, Patrick
name: Planat, Michel
Publisher: name: arXiv
Year: 2010
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: Let $Ψ(n):=n\prod_{p | n}(1+\frac{1}{p})$ denote the Dedekind $Ψ$ function. Define, for $n\ge 3,$ the ratio $R(n):=\frac{Ψ(n)}{n\log\log n}.$ We prove unconditionally that $R(n)< e^γ$ for $n\ge 31.$ Let $N_n=2...p_n$ be the primorial of order $n.$ We prove that the statement $R(N_n)>\frac{e^γ}{ζ(2)}$ for $n\ge 3$ is equivalent to the Riemann Hypothesis.
description: 5 pages, to appear in Journal of Combinatorics and Number theory
title: Prediction of Mitosis-Karyorrhexis Index in Pediatric Neuroblastoma Using a Three-classification Radiomics model based on CT images
Creators: name: Chen, Xin
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Oncology
subject: Paediatric
subject: CT
subject: Diagnostic procedure
subject: Cancer

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: Neuroblastoma is a common solid malignancy occurring in childhood, mostly originating from the abdomen [1] .MKI has been used to indirectly reflect the MYCN amplification [2] , and it is independently prognostic in neuroblastomaMitosis-karyorrhexis...
O Problema de Seguir Regras
Creators: name: Sampaio, Evaldo
Publisher: name: abstracta
Year: 2021

description: This paper intends to discuss the concept of following a rule in Wittgenstein’s Philosophical Investigations. The interpretation I provide here takes that problem as a transcendental one. My aim is to show that the problem can be solved through a conceptual analysis of the relations between “learning” and “explaining”; whose acknowledgement, on Wittgenstein’s view, shows that the problem of following a rule and, in an analogous way, the question as to whether those relations are intersubjective ones, can be clarified by the correct understanding of its place in the functioning of language.
description: abstracta, Bd. 1 Nr. 2 (2005)
“Seguir Regras” em Wittgenstein
Creators: name: Jourdan, Camila
Publisher: name: abstracta
Year: 2021

description: The article presents the problem of determination of a rule in the later Wittgenstein, and the interdiction by the author of a mentalist solution for the problem, showing that such interdiction is also applied to a communitarist solution, formulated in terms of the confirmation of an independent pattern of concordant behaviour. Firstly, the problem of how to follow rules is introduced, and, next, the heart of Wittgenstein’s objections to mentalism is presented. Afterwards, Kripke’s reading of the problem is exposed, presenting his “sceptical solution” as an example of a communitarist reading. Finally, it is argued that Wittgenstein cannot be defending such solution.
description: abstracta, Bd. 1 Nr. 2 (2005)
title: The role of Dual-Energy CT (DECT) in reducing contrast media complications: Radiologists tips!
Creators: name: Di Meglio, Nunzia
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Contrast agents
subject: CT
subject: Contrast agent-other
subject: Outcomes

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: Mortality has been postponed considerably, as a result not of revolutionary advances in slowing the process of ageing but of ongoing progress in improving health [1]. In this context, with the increase in life expectancy, public health had to deal...