Miracle-dz/UniFAR-FTUs huggingface dataset:
Explicit Multistage Schemes for the Solution of the Three-Dimensional Compressible Euler/Navier-Stokes Equations

The objective of this study was to develop a high-resolution-explicit-multi-block numerical algorithm, suitable for efficient computation of the three-dimensional, timedependent Euler and Navier-Stokes equations. The resulting algorithm has employed a finite volume approach, using MUSCL-type differencing to obtain state variables at cell interface. Variable interpolations were written in the K-scheme formulation. Inviscid fluxes were calculated via Roe’s flux-difference splitting, and van Leer’s flux-vector splitting techniques, which are considered state of the art. The viscous terms were discretized using a second-order, central-difference operator. Two classes of explicit time integration has been investigated for solving the com­ pressible inviscid/viscous flow problems —two-stage predictor-corrector schemes, and multistage time-stepping schemes. The coefficients of the multistage time-stepping schemes have been modified successfully to achieve better performance with upwind differencing. A technique was developed to optimize the coefficients for good highfrequency damping at relatively high CFL numbers. Local time-stepping, implicit resid­ ual smoothing, and multigrid procedure were added to the explicit time stepping scheme to accelerate convergence to steady-state. The developed algorithm was implemented successfully in a multi-block code, which provides complete topological and geometric flexibility. The only requirement is C° continuity of the grid across the block interface. The algorithm has been validated on a diverse set of three-dimensional test cases of increasing complexity. The cases studied were: (1) supersonic corner flow; (2) supersonic plume flow; (3) laminar and turbulent flow over a flat plate; (4) transonic flow over an Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. ONERA M6 wing, and (5) unsteady flow of a compressible jet impinging on a ground plane (with and without cross flow). The emphasis of the test cases was validation of code, and assessment of performance, as well as demonstration of flexibility. Reproduced with permission of the copyright owner. Further reproduction prohibited without permission.
Efficacy of a phase II vaccine targeting Cytomegalovirus antigens in newly diagnosed GBM

2042 Background: Conventional therapies for GBM fail to target tumor cells exclusively. Immunologic targeting of tumor-specific proteins may allow more precise eradication of neoplastic cells. The discovery (Cobbs, Harkins et al. 2002) and recent confirmation (Mitchell, Xie et al. 2007) that GBM, but not surrounding normal brain tissue, serves as a refuge for Cytomegalovirus (CMV) reactivation provides an unparalleled opportunity to subvert, as tumor-specific antigens, the highly-immunogenic viral proteins expressed by CMV. Methods: A phase II randomized, prospective clinical trial was undertaken to assess the immunogenicity and efficacy of targeting the immunodominant CMV integument protein, pp65, in patients with newly-diagnosed GBM using pp65-RNA transfected dendritic cells (DCs). After resection and radiation with concurrent TMZ (75mg/m2/d), patients received subsequent monthly cycles of TMZ (200 mg/m2) simultaneous with intradermal vaccinations and were randomized to receive an autologous lymphocyte .
Delayed delivery of the second twin

We describe a case of diamniotic dichorionic pregnancy at 23 weeks and 6 days of gestation with threatened preterm labor with rupture of membrane of twin one. After 10 days we delivered the first twin. We decided to retain the other one to allow improvement in the outcome for the second twin. The patient was treated with tocolytics, antibiotics, cervical cerclage, steroid and continously monitored. After 58 daysthere was increasing uterine contractility and we delivered the second twin.
On the mean time to failure of an age-replacement model in discrete time

Abstract Industrial feedback data play a key role in assessing and enhancing reliability of the operating systems or equipment. In case of equipment that operates on cycles or on demand, lifetime is measured in number of cycles or number of solicitations before its failure. These situations suggest the use of discrete probability models. In this article, we look into the maintenance aspect of these equipments. In particular, we consider the discrete age-replacement model and then study the properties of the mean time to failure (MTTF) of a system. Using MTTF, we have established some characterizations. An ordering based on MTTF is developed and its implications on other existing stochastic orders are investigated. Finally, we propose a simple non parametric test for testing decreasing MTTF class.
Effect of Atmospheric Plasma Sprayed TiO2-10% NiAl Cermet Coating Thickness on Cavitation Erosion, Sliding and Abrasive Wear Resistance

Effect of Atmospheric Plasma Sprayed TiO2–10% NiAl Cermet Coating Thickness on Cavitation Erosion, Sliding and Abrasive Wear Resistance M. Szala a,∗, A. Dudek, A. Maruszczyk, M. Walczak, J. Chmiel and M. Kowal Lublin University of Technology, Faculty of Mechanical Engineering, Department of Materials Engineering, Nadbystrzycka St. 36D, 20-618 Lublin, Poland Institute of Materials Engineering, Faculty of Production Engineering and Materials Technology, Częstochowa University of Technology, Armii Krajowej St. 19, 42-200 Częstochowa, Poland Faculty of Mechanical Engineering and Computer Science, Częstochowa University of Technology, Armii Krajowej St. 19, 42-200 Częstochowa, Poland University of Economics and Innovation in Lublin, Department of Mechanics and Mechanical Engineering, Faculty of Transport and Computer Science, Projektowa St. 4, 20-209 Lublin, Poland Faculty of Engineering and Economics of Transport, Maritime University of Szczecin, H. Pobożnego St. 11, 70-507 Szczecin, Poland Lublin University of Technology, Faculty of Civil Engineering and Architecture, Nadbystrzycka St. 40, 20-618 Lublin, Poland
Measurement of Upsilon production in pp collisions at {\surd}s = 7 TeV

The production of Upsilon(1S), Upsilon(2S) and Upsilon(3S) mesons in proton-proton collisions at the centre-of-mass energy of sqrt(s)=7 TeV is studied with the LHCb detector. The analysis is based on a data sample of 25 pb-1 collected at the Large Hadron Collider. The Upsilon mesons are reconstructed in the decay mode Upsilon -> mu+ mu- and the signal yields are extracted from a fit to the mu+ mu- invariant mass distributions. The differential production cross-sections times dimuon branching fractions are measured as a function of the Upsilon transverse momentum pT and rapidity y, over the range pT Upsilon(1S) X) x B(Upsilon(1S)->mu+ mu-) = 2.29 {\pm} 0.01 {\pm} 0.10 -0.37 +0.19 nb, sigma(pp -> Upsilon(2S) X) x B(Upsilon(2S)->mu+ mu-) = 0.562 {\pm} 0.007 {\pm} 0.023 -0.092 +0.048 nb, sigma(pp -> Upsilon(3S) X) x B(Upsilon(3S)->mu+ mu-) = 0.283 {\pm} 0.005 {\pm} 0.012 -0.048 +0.025 nb, where the first uncertainty is statistical, the second systematic and the third is due to the unknown polarisation of the three Upsilon states.
Observer‐based finite‐time asynchronous control for a class of hidden Markov jumping systems with conic‐type non‐linearities

An observer-based finite-time asynchronous control law is designed for a class of hidden Markov jumping systems with non-linearities and external disturbances. The non-linearities satisfy the conic-type constraint condition that lies in a known hypersphere with an uncertain centre. The non-synchronisation phenomenon between the system modes and observer/controller modes is modelled by a hidden Markov model. By means of the proper stochastic Lyapunov–Krasovskii functional method, a sufficient condition is obtained to guarantee the stochastic finite-time boundedness of the corresponding argument error dynamic systems with a satisfied disturbance rejection level. Finally, the feasibility and validity of the main results is illustrated through a pratical example related to the DC motor.
Scaling Properties of Atmospheric Wind Speed in Mesoscale Range

The scaling properties of turbulent flows are well established in the inertial sub-range. However, those of the synoptic-scale motions are less known, also because of the difficult analysis of data presenting nonstationary and periodic features. Extensive analysis of experimental wind speed data, collected at the Mauna Loa Observatory of Hawaii, is performed using different methods. Empirical Mode Decomposition, interoccurrence times statistics, and arbitrary-order Hilbert spectral analysis allow to eliminate effects of large-scale modulations, and provide scaling properties of the field fluctuations (Hurst exponent, interoccurrence distribution, and intermittency correction). The obtained results suggest that the mesoscale wind dynamics owns features which are typical of the inertial sub-range turbulence, thus extending the validity of the turbulent cascade phenomenology to scales larger than observed before.
Resolving Schrodinger's Cat, Wigner's Friend and Frauchiger-Renner's Paradoxes at a Single-Quantum Level

Schrodinger's cat and Wigner's friend paradoxes are analyzed using the `wave-particle non-dualistic interpretation of quantum mechanics at a single-quantum level' and are shown to be non-paradoxes within the quantum formalism. Then, the extended version of Wigner's friend thought experiment, proposed in a recent article titled, ``Quantum theory cannot consistently describe the use of itself '', Nature Communications {\bf 9}, 3711 (2018), by Frauchiger and Renner (FR) is considered. In quantum mechanics, it's well-known that, statistically observing a large number of identical quantum systems at some particular quantum state, which results in Born's probability, and merely inferring its presence in the same quantum state with the same probability yield distinct physical phenomena. If this fact is not taken care while interpreting any experimental outcomes, then FR type paradoxes pop up. ``What an astonishingly self-consistent the Quantum Theory is! ' - is explicitly worked out in the case of FR gedankenexperiment. The present work shows the importance of single-quantum phenomenon for the non-paradoxical interpretation of statistically observed experimental outcomes.
Is Combined Photodynamic Therapy and Subconjunctival Bevacizumab Injection Useful for Corneal Neovascularization

Corneal neovascularization caused by various ocular conditions such as infectious, inflammatory, degenerative, or traumatic diseases of the cornea and the injury of the limbal stem cell barrier. It is often accompanied by corneal scarring, stromal edema, lipid deposition, and inflammation and is associated with significant visual impairment and poor prognosis after subsequent penetrating keratoplasty. Conventional treatments for corneal neovascularization, including medications such as steroids or angiogenesis inhibitors, laser photocoagulation, fine needle diathermy, and surgery, have clinical limitations and adverse effects. Gene therapy is effective in experimental models of corneal neovascularization, however disadvantages such as short duration of effect, technical problems, and safety concerns limit the application in clinical fields.
Fixed-Time Bipartite Consensus Tracking of Fractional-Order Multi-Agent Systems With a Dynamic Leader

This brief considers the fixed-time bipartite consensus tracking problem of a fractional-order multiagent system (FOMAS) with a dynamic leader in a general directed signed network. Firstly, by introducing a neighborhood-based variable, the FOMAS is transformed into an integer-order MAS. Then, a distributed protocol with heterogeneous coupling gains is proposed to ensure that the fixed-time bipartite consensus tracking can be achieved within a settling time. The upper bound of the settling time can be estimated explicitly, which is irrelevant to any initial conditions. Finally, the effectiveness of the proposed distributed protocol is illustrated by numerical simulation.
Lifting countable to uncountable mathematics.

Ordinary, i.e.non-set theoretic mathematics is generally formalised in second-order arithmetic, a direct descendant of Hilbert-Bernays' Grundlagen der Mathematik with a language restricted to the countable: only natural numbers and sets thereof are directly given, while uncountable objects are available indirectly via countable representations. For instance, Turing's computational framework, nowadays called computability theory, and the associated program Reverse Mathematics (essentially) take place in second-order arithmetic. The aim of this paper is to lift some of these 'countable' results to uncountable mathematics. In particular, we show that with little modification recursive counterexamples from computability theory and reversals from Reverse Mathematics, second-order/countable as they may be, yield interesting results in higher-order/uncountable mathematics. We shall treat the following topics/theorems: the monotone convergence theorem/Specker sequences, compact and closed sets in metric spaces, the Rado selection lemma, the ordering and algebraic closures of fields, and ideals of rings.
The Overall Evaluation of the Current Tense Doctor-patient Relationship in China

According to a survey,three quarters of medical workers think that the current doctor-patient relationship is tense,while one fifths of patients hold the same view and the doctor group give especially bad evaluation on doctorpatient relationship. The tense doctor-patient relationship mainly features the frequent occurrences of injuring doctors,persistence of medical troubles and discrepancy of mutual trust between doctors and patients. The tense doctor-patient relationship causes medical workers to lose personal security and dignity,which leads to the decline of their job satisfaction and loyalty to their job.
Search for top squark pair production in the 3-body decay mode with a single lepton final state with the ATLAS detector

In this work, the results from two searches for direct pair production of top squarks, the supersymmetric partner of the top quark, are reported. Both searches focus on final states with one isolated electron or muon, multiple hadronic jets, and large missing transverse momentum. The first analysis is performed on data from proton-proton collisions delivered by the Large Hadron Collider at a centre-of-mass energy of 13 TeV and recorded by the ATLAS detector within the years 2015 and 2016, corresponding to an integrated luminosity of 36.1 fb^-1. The second analysis is performed on the full Run 2 dataset of proton-proton collisions at a centre-of-mass energy 13 TeV recorded by the ATLAS detector within the period from 2015 to 2018, corresponding to an integrated luminosity of 139 fb^-1. A particular top squark decay mode is considered, where the mass difference between the top squark and the neutralino is smaller than the top quark and as a result each top squark decays via a 3-body process into a b quark, a W boson, and a neutralino. In this phase space, the top squark pair events closely resemble top quark pair processes. No significant deviation from the predicted Standard Model background is observed in both searches. Hence, exclusion limits at 95 % confidence level on the supersymmetric model are determined. In the first analysis, top squarks with masses up to 460 GeV are excluded. With the results from the second analysis, the exclusion limit is extended and top squarks with masses up to 720 GeV and neutralino masses up to 580 GeV are excluded.
High-resolution charge exchange x-ray emission at solar wind velocities

With a high-resolution x-ray quantum microcalorimeter detector, x-ray emissions following single charge exchange are measured for 392 km/s, 554 km/s, 678 km/s, and 876 km/s Ne8+ on He collisions. Line ratios are reported for 3p → 2s, 4s → 2p, 3d → 2p, and 4d → 2p emissions by normalizing these to 4p → 2s emission. It is found that the measured line ratios are in good agreement with a multichannel Landau-Zener calculation for the 4s → 2p emission. However, unlike the calculation, the measured line ratios for 3p → 2s, 4d → 2p and 3d → 2p emissions show an increasing state-selectivity for 4d and 4f states with increasing collision velocity. This probably indicates the importance of rotational coupling effects in high angular momentum population.With a high-resolution x-ray quantum microcalorimeter detector, x-ray emissions following single charge exchange are measured for 392 km/s, 554 km/s, 678 km/s, and 876 km/s Ne8+ on He collisions. Line ratios are reported for 3p → 2s, 4s → 2p, 3d → 2p, and 4d → 2p emissions by normalizing these to 4p → 2s emission. It is found that the measured line ratios are in good agreement with a multichannel Landau-Zener calculation for the 4s → 2p emission. However, unlike the calculation, the measured line ratios for 3p → 2s, 4d → 2p and 3d → 2p emissions show an increasing state-selectivity for 4d and 4f states with increasing collision velocity. This probably indicates the importance of rotational coupling effects in high angular momentum population.
From Gravity to Hopf Algebra Lattice Models

This thesis addresses three different problems related to quantum gravity. In the first problem we will discuss the two natural ways to encode gravity through geometric structures. One is the much acclaimed Einstein's general relativity and the other is teleparallel gravity, where torsion as opposed to curvature encodes the dynamics of gravitational degrees of freedom. We will show that the Einstein--Cartan action, the general relativity first-order formulation, can also be seen as the first-order formulation of teleparallel gravity. We then discuss how the discretization of the Einstein-Cartan action in three dimensional spacetime affects the equivalence of these two formulations. We investigate then how one can derive the quantum group structure in loop quantum gravity with a non-zero cosmological constant $\Lambda$ from the continuum action. It is well known that the cosmological constant implies a quantum group deformation of the internal gauge group at the quantum level, but it is usually introduced by hand. We show for the first time that we can derive this q-deformation from the 3d gravity action using the discretization scheme already discussed above. The key element is to find the right set of variables to discretize. The discretized symplectic form is then the one for the Heisenberg double which upon quantization generates the quantum group structure. This allows to see 3d loop quantum gravity (with topological defects) as a specific Hopf algebra lattice theory. The last part of the thesis studies Hopf algebras lattice models, defined as representations for certain quantum groups. We propose a set of requirements for these models which should allow to generalize the construction to different types of quantum groups. We show how the Kitaev's quantum double model satisfies such requirements. We then propose a new version of the Kitaev model based on Majid's bicrossproduct quantum group. The construction of this new model is relatively natural as it relies on the use of the covariant Hopf algebra actions. We obtain an exactly solvable Hamiltonian for the model and provide a definition of the ground state in terms of a tensor network representation. Finally, we discuss how Kitaev's quantum double model and its dual version can be related to the two formulations of gravity.
Corticostriatal synaptic weight evolution in a two-alternative forced choice task

In natural environments, mammals can efficiently select actions based on noisy sensory signals and quickly adapt to unexpected outcomes to better exploit opportunities that arise in the future. Such feedback-based changes in behavior rely on long term plasticity within cortico-basal-ganglia-thalamic networks, driven by dopaminergic modulation of cortical inputs to the direct and indirect pathway neurons of the striatum. While the firing rates of corticostriatal neurons have been shown to adapt across a range of feedback conditions, it remains difficult to directly assess the corticostriatal synaptic weight changes that contribute to these adaptive firing rates. In this work, we simulate a computational model for the evolution of corticostriatal synaptic weights based on a spike timing-dependent plasticity rule driven by dopamine signaling that is induced by outcomes of actions in the context of a two-alternative forced choice task. Results show that plasticity predominantly impacts direct pathway weights, which evolve to drive action selection toward a more-rewarded action in settings with deterministic reward outcomes. After the model is tuned based on such fixed reward scenarios, its performance agrees with the results of behavioral experiments carried out with probabilistic reward paradigms.
Contemporary topics in Finite Fields: Existence, characterization, construction and enumeration problems

Nesta tese de doutorado nos discutimos varios problemas teoricos e praticos da teoria de Corpos Finitos. Nossos principais objetos de estudo incluem polinomios, funcoes polinomiais e elementos em corpos finitos. Nos discutimos problemas a respeito de existencia, construcao, caracterizacao e enumeracao.
Comparing Ambiguous Urns with Different Sizes

We investigate experimentally preferences between different ambiguous processes generated by two-color Ellsberg urns. By providing symmetric information on urns with different numbers of beads and keeping the information on the most optimistic, pessimistic, and equal probability of winning possibilities the same, we elicit subjects' preferences for the size of an ambiguous urn. Subjects prefer the bets from the ambiguous urns with more beads. We analyze the role of ambiguity aversion and ratio bias of subjects in this behavior. We study the restrictions that our findings impose on the existing ambiguity models.