cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
On the dynamic stability of flexible supersonic vehicles
Creators: name: Drummond, Alastair Milne
Publisher: name: University of British Columbia
Year: 2011

description: The dynamic stability of a long, slender-bodied vehicle with a flexible fuselage is examined analytically in the supersonic speed regime. The small aspect ratio lifting surfaces are considered to be rigid but dependence of their angles of attack on fuselage flexibility is accounted for. The amplitude of pitching oscillation is restricted to ±10° about the zero-lift line by the nature of the unsteady, supersonic aerodynamic theory used. The stability problem is formulated by a set of non-linear differential equations with the non-linear contributions arising from both the inertia and the aerodynamic forces. The present analysis accounts for non-linear contributions up to third degree in the rigid body angle of attack. The stability of the short period mode is investigated using Routh-Hurwitz criteria and an expression representing a stiffness criterion for dynamic stability is obtained. The analytical development is so presented as to make it easily applicable to a supersonic, flexible vehicle with or without wings, e.g. a supersonic transport or a missile. Moreover to facilitate the evaluation of the effect of flexibility and non-linearities on dynamic stability, four cases are considered separately: a. Rigid body equations of motion, without non-linear terms b. Rigid body equations of motion, with non-linear terms c. Flexible body equations of motion, without non-linear terms d. Flexible body equations of motion, with non-linear terms. A numerical example is presented towards the end which investigates the dynamic stability of a flexible, supersonic transport configuration. The conclusions from the example are: 1. The non-linearities can be safely neglected for rigid aircraft, but not for wingless vehicles. 2. Flexibility affects the stability through the lift and pitching moment and also by introducing two more possible equilibrium points. 3. The amount of work involved in finding a solution is markedly increased by the necessity of solution of more characteristic equations of higher degree. 4. The stiffness criterion can be used to adjust the stiffness distribution to one that can make an unstable configuration stable. The usefulness of the method is two-fold. For a flexible vehicle with known geometric, mass and elastic properties, the method can predict its dynamic stability. This feature is of considerable importance particularly in the design stage. On the other hand, if an aircraft with known geometry, total mass and centre-of-gravity location proves to be dynamically unstable, then the analysis provides a stiffness criterion by which it can be made stable. The analysis involves a considerable amount of computation and hence seems to be particularly suited for solution by a digital computer.
Meta-operating systems projects: Key solutions, open calls and use cases
Creators: name: EUCloudEdgeIoT.Eu
Publisher: name: Zenodo
Year: 2023
Subjects: Meta Operating Systems
Use cases
Edge computing
Energy grid resilience
Smart agriculture
Smart port
Smart XR validation
Robotics
Renewable energy
Crisis management
Smart manufacturing
Smart media
Remote healthcare

description: The European Cloud, Edge & IoT Continuum (EUCloudEdgeIoT.eu) aims to realise a pathway for the understanding and development of the Cloud-Edge-IoT (CEI) Continuum by promoting cooperation between a wide range of research projects, developers and suppliers, business users and potential adopters of this new technological paradigm. To achieve these goals, the EUCloudEdgeIoT initiative coordinates a diverse portfolio of project clusters with different specialisations. These are: Cloud Computing: towards a smart cloud computing continuum (ICT40-2020) Software Technologies (ICT-50-2020) Next Generation Internet of Things (ICT-56-2020) Future European platforms for the Edge: Meta Operating Systems (HORIZON-CL4-2021-DATA-01-05) Cognitive Cloud: AI-enabled computing continuum from Cloud to Edge (HORIZON-CL4-2022-DATA-01-02) Programming tools for decentralised intelligence and swarms (HORIZON-CL4-2022- DATA-01-03) Open source for cloud-based services (HORIZON-CL4-2022-DIGITAL-EMERGING-01-26) This booklet focuses specifically on the MetaOS portfolio, providing insights on relevant use cases under development and open call opportunities. For more information on the wider initiative, or on other portfolios, please see our Research Community Booklet.
Impact of Scale Dependent Bias and Nonlinear Structure Growth on the ISW Effect: Angular Power Spectra
Creators: name: Smith, Robert E.
name: Hernandez-Monteagudo, Carlos
name: Seljak, Uros
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We investigate the impact of nonlinear evolution of the gravitational potentials in the LCDM model on the Integrated Sachs-Wolfe (ISW) contribution to the CMB temperature power spectrum, and on the cross-power spectrum of the CMB and a set of biased tracers of the mass. We use an ensemble of N-body simulations to directly follow the potentials and compare results to perturbation theory (PT). The predictions from PT match the results to high precision for k<0.2 h/Mpc. We compute the nonlinear corrections to the angular power spectrum and find them to be <10% of linear theory for l<100. These corrections are swamped by cosmic variance. On scales l>100 the departures are more significant, however the CMB signal is more than a factor 10^3 larger at this scale. Nonlinear ISW effects therefore play no role in shaping the CMB power spectrum for l<1500. We analyze the CMB--density tracer cross-spectrum using simulations and renormalized bias PT, and find good agreement. The usual assumption is that nonlinear evolution enhances the growth of structure and counteracts linear ISW on small scales, leading to a change in sign of the CMB-LSS cross-spectrum at small scales. However, PT analysis suggests that this trend reverses at late times when the logarithmic growth rate f(a)=dlnD/dlna<0.5 or om_m(a)<0.3. Numerical results confirm these expectations and we find no sign change in ISW-LSS cross-power for low redshifts. Corrections due to nonlinearity and scale dependence of the bias are found to be <10% for l<100, therefore below the S/N of the current and future measurements. Finally, we estimate the CMB--halo cross-correlation coefficient and show that it can be made to match that for CMB--dark matter to within 5% for thin redshift shells, mitigating the need to model bias evolution.
description: 27 pages, 19 figure. Hi-res. version: http://www.itp.uzh.ch/~res/NonlinearISW.HiRes.pdf
ATLAS: A Question Oriented Approach to the Use of Pattern Languages in Knowledge Management
Creators: name: Cordes, R.J.
name: David, Scott
name: Friedman, Daniel
name: Mikhailova, Alexandra
name: Penland, Andrew
name: Young, Sam
name: Zacharias, Colten
Publisher: name: Zenodo
Year: 2023

description: The ATLAS system, evolving since the late 1990s, stands as a dynamic and comprehensive knowledge management tool that intends to address the complexities of modern information supply chains. The antecedent to ATLAS was the Atlas of Risk, an informal assemblage of various risks associated with digital interactions. Here we provide an initial specification for digital prototypes and paper-and-pencil implementations of a matured ATLAS architecture which integrates pattern language approaches with question-oriented procedures to manage and interpret meaning and context. The ATLAS system facilitates the management and communication of nuanced data sets and knowledge bases with an eye towards interoperability without the need for fully shared standards. The development of ATLAS, driven by the need for enhanced data interoperability and shared understanding in an increasingly complex and volatile digital landscape, reflects a profound, community response to the challenges of information environments and the fragility of extreme specialization. ATLAS's ongoing evolution showcases its adaptability and significance in the realms of data analysis, knowledge management, and cognitive security, and this first release of a technical specification establishes a foundation for a transition from prototype to scale-appropriate implementation.
Two-Dimensional Almost-Riemannian Structures with Tangency Points
Creators: name: Agrachev, Andrei
name: Boscain, Ugo
name: Charlot, Grégoire
name: Ghezzi, Roberta
name: Sigalotti, Mario
Publisher: name: arXiv
Year: 2009
Subjects: subject: Differential Geometry (math.DG)
subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: Two-dimensional almost-Riemannian structures are generalized Riemannian structures on surfaces for which a local orthonormal frame is given by a Lie bracket generating pair of vector fields that can become collinear. We study the relation between the topological invariants of an almost-Riemannian structure on a compact oriented surface and the rank-two vector bundle over the surface which defines the structure. We analyse the generic case including the presence of tangency points, i.e. points where two generators of the distribution and their Lie bracket are linearly dependent. The main result of the paper provides a classification of oriented almost-Riemannian structures on compact oriented surfaces in terms of the Euler number of the vector bundle corresponding to the structure. Moreover, we present a Gauss?Bonnet formula for almost-Riemannian structures with tangency points.
Large prebiotic molecules in space: photo-physics of acetic acid and its isomers
Creators: name: Puletti, Fabrizio
name: Malloci, Giuliano
name: Mulas, Giacomo
name: Cecchi-Pestellini, Cesare
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: An increasing number of large molecules have been positively identified in space. Many of these molecules are of biological interest and thus provide insight into prebiotic organic chemistry in the protoplanetary nebula. Among these molecules, acetic acid is of particular importance due to its structural proximity to glycine, the simplest amino acid. We compute electronic and vibrational properties of acetic acid and its isomers, methyl formate and glycolaldehyde, using density functional theory. From computed photo-absorption cross-sections, we obtain the corresponding photo-absorption rates for solar radiation at 1 AU and find them in good agreement with previous estimates. We also discuss glycolaldehyde diffuse emission in Sgr B2(N), as opposite to emissions from methyl formate and acetic acid that appear to be concentrate in the compact region Sgr B2(N-LMH).
description: 8 pages, 5 figures
title: Hermann Ferdinand Hitzig, 25. Januar 1868 - 26. Juli 1911
title: [Nekrolog] von Prof. Dr. Max Huber
titleType: Subtitle
Creators: name: Huber, Max
Publisher: name: Schulthess & Co.
Year: 1911
Subjects: subject: 920 Biografien, Genealogie, Insignien
subject: Nachruf
subject: Hitzig, Hermann Ferdinand
subject: Zürich

description: Separatabdruck aus: Schweizerische Juristen-Zeitung, Jg. 8, Heft 4/5, 01.09.1911
High Resolution Observations of Dust Continuum Emission at 340 GHz from the Low-mass T Tauri Star FN Tauri
Creators: name: Momose, Munetake
name: Ohashi, Nagayoshi
name: Kudo, Tomoyuki
name: Tamura, Motohide
name: Kitamura, Yoshimi
Publisher: name: arXiv
Year: 2010
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: FN Tau is a rare example of very low-mass T Tauri stars that exhibits a spatially resolved nebulosity in near-infrared scattering light. To directly derive the parameters of a circumstellar disk around FN Tau, observations of dust continuum emission at 340 GHz are carried out with the Submillimeter Array (SMA). A point-like dust continuum emission was detected with a synthesized beam of ~ 0.7" in FWHM. From the analysis of the visibility plot, the radius of the emission is estimated to be <= 0.29", corresponding to 41 AU. This is much smaller than the radius of the nebulosity, 1.85" for its brighter part at 1.6 micron. The 340 GHz continuum emission observed with the SMA and the photometric data at lambda <= 70 micron are explained by a power-law disk model whose outer radius and mass are 41 AU and (0.24 - 5.9) x 10^{-3} M_{sun}, respectively, if the exponent of dust mass opacity (beta) is assumed to be 0-2. The disk model cannot fully reproduce the flux density at 230 GHz obtained with the IRAM 30-meter telescope, suggesting that there is another extended "halo" component that is missed in the SMA observations. By requiring the halo not to be detected with the SMA, the lower limit to the size of the halo is evaluated to be between 174 AU and 574 AU, depending on the assumed beta value. The physical nature of the halo is unclear, but it may be the periphery of a flared circumstellar disk that is not described well in terms of a power-law disk model, or a remnant of a protostellar envelope having flattened structure.
description: 21 pages with 5 figures; Accepted for publication in The Astrophysical Journal
Non-equilibrium Characterization of Spinodal Points using Short Time Dynamics
Creators: name: Loscar, Ernesto S.
name: Ferrero, Ezequiel E.
name: Grigera, Tomas S.
name: Cannas, Sergio A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Though intuitively appealing, the concept of spinodal is rigourously defined only in systems with infinite range interactions (mean field systems). In short-range systems, a pseudo-spinodal can be defined by extrapolation of metastable measurements, but the point itself is not reachable because it lies beyond the metastability limit. In this work we show that a sensible definition of spinodal points can be obtained through the short time dynamical behavior of the system deep inside the metastable phase, by looking for a point where the system shows critical behavior. We show that spinodal points obtained by this method agree both with the thermodynamical spinodal point in mean field systems and with the pseudo-spinodal point obtained by extrapolation of meta-equilibrium behavior in short range systems. With this definition, a practical determination can be achieved without regard for equilibration issues.
description: 10 pages, 12 figures
Ontogeny of behaviour in five species of grebes.
Creators: name: McAllister, Nancy Mahoney
Publisher: name: University of British Columbia
Year: 2011

description: The resting postures, locomotion, feeding behaviour, and comfort movements of five species of grebes (Podiceps caspicus, P. auritus, P. grisegena, Podilymbus podiceps, and Aechmophorus occidentalis) are described, compared, and their development traced to the adult form. Each pattern is then compared with its counterpart in other groups of birds, and its adaptive significance is considered. In defecation, climbing-up, and begging the eliciting stimuli are examined. The stages of development are traced, and it is found that the birds hatch at the beginning of stage two, the first appearance of comfort movements. They pass into stage three, the maturation of comfort movements, within a few hours and remain in this stage until the adult sleep posture is assumed, functional preening and oiling are established, and spontaneous swimming appears, at eight days. Stage four includes the appearance of simple bathing, diving, and the substitution of following for riding on the parent’s back. Stage five, beginning about the sixteenth day includes matured bathing, alarm, self-feeding, and finally flight. Because of the great increase in length of stage three over that of precocial birds, the inability of the chicks to maintain the adult sleep posture, the lack of functional preening and oiling, and the depression of all activity, it is suggested that the grebes be considered not precocial birds but semi-precocial birds with the gulls. They are adapted by these attributes and by the controlled defecation response to life in a nest. The grebe nest being unsuitable for prolonged brooding, the grebe broods its chicks on its back.
The kinematics of late type stars in the solar cylinder studied with SDSS data
Creators: name: Fuchs, B.
name: Dettbarn, C.
name: Rix, H. -W.
name: Beers, T. C.
name: Bizyaev, D.
name: Brewington, H.
name: Jahreiss, H.
name: Klement, R.
name: Malanushenko, E.
name: Malanushenko, V.
name: Oravetz, D.
name: Pan, K.
name: Simmons, A.
name: Snedden, S.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We study the velocity distribution of Milky Way disk stars in a kiloparsec-sized region around the Sun, based on ~ 2 million M-type stars from DR7 of SDSS, which have newly re-calibrated absolute proper motions from combining SDSS positions with the USNO-B catalogue. We estimate photometric distances to all stars, accurate to ~ 20 %, and combine them with the proper motions to derive tangential velocities for this kinematically unbiased sample of stars. Based on a statistical de-projection method we then derive the vertical profiles (to heights of Z = 800 pc above the disk plane) for the first and second moments of the three dimensional stellar velocity distribution. We find that = -7 +/- 1 km/s and = -9 +/- 1 km/s, independent of height above the mid-plane, reflecting the Sun's motion with respect to the local standard of rest. In contrast, changes distinctly from -20 +/- 2 km/s in the mid-plane to = -32 km/s at Z = 800 pc, reflecting an asymmetric drift of the stellar mean velocity that increases with height. All three components of the M-star velocity dispersion show a strong linear rise away from the mid-plane, most notably σ_{ZZ}, which grows from 18 km/s (Z = 0) to 40 km/s (at Z = 800 pc). We determine the orientation of the velocity ellipsoid, and find a significant vertex deviation of 20 to 25 degrees, which decreases only slightly to heights of Z = 800 pc. Away from the mid-plane, our sample exhibits a remarkably large tilt of the velocity ellipsoid towards the Galactic plane, which reaches 20 deg. at Z = 800 pc and which is not easily explained. Finally, we determine the ratio σ^2_{ϕϕ}/σ^2_{RR} near the mid-plane, which in the epicyclic approximation implies an almost perfectly flat rotation curve at the Solar radius.
description: 18 pages, 9 figures, accepted to Astron. J
The beneficial effects of chick embryo extract preconditioning on hair follicle stem cells: A promising strategy to generate Schwann cells
Creators: name: Pandamooz, Sareh
name: Jurek, Benjamin
name: Dianatpour, Mehdi
name: Haerteis, Silke
name: Limm, Katharina
name: Oefner, Peter J.
name: Dargahi, Leila
name: Borhani-Haghighi, Afshin
name: Miyan, Jaleel A
name: Salehi, Mohammad Saied
Publisher: name: Universität Regensburg
Year: 2023
Subjects: subject: 570 Biowissenschaften, Biologie
subject: 610 Medizin

description: The beneficial effects of hair follicle stem cells in different animal models of nervous system conditions have been extensively studied. While chick embryo extract (CEE) has been used as a growth medium supplement for these stem cells, this is the first study to show the effect of CEE on them. The rat hair follicle stem cells were isolated and supplemented with 10% fetal bovine serum plus 10% CEE. The migration rate, proliferative capacity and multipotency were evaluated along with morphometric alteration and differentiation direction. The proteome analysis of CEE content identified effective factors of CEE that probably regulate fate and function of stem cells. The CEE enhances the migration rate of stem cells from explanted bulges as well as their proliferation, likely due to activation of AP-1 and translationally controlled tumour protein (TCTP) by thioredoxin found in CEE. The increased length of outgrowth may be the result of cyclic AMP response element binding protein (CREB) phosphorylation triggered by active CamKII contained in CEE. Further, CEE supplementation upregulates the expression of vascular endothelial growth factor (VEGF), brain-derived neurotrophic factor and glial cell line-derived neurotrophic factor. The elevated expression of target genes and proteins may be due to CREB, AP-1 and c-Myc activation in these stem cells. Given the increased transcript levels of neurotrophins, VEGF, and the expression of PDGFR-α, S100B, MBP and SOX-10 protein, it is possible that CEE promotes the fate of these stem cells towards Schwann cells.
Curvature effects on collective excitations in dumbbell-shaped hollow nanotubes
Creators: name: Shima, Hiroyuki
name: Yoshioka, Hideo
name: Onoe, Jun
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We investigate surface-curvature induced alteration in the Tomonaga-Luttinger liquid (TLL) states of a one-dimensional (1D) deformed hollow nanotube with a dumbbell-shape. Periodic variation of the surface curvature along the axial direction is found to enhance the TLL exponent significantly, which is attributed to an effective potential field that acts low-energy electrons moving on the curved surface. The present results accounts for the experimental observation of the TLL properties of 1D metallic peanut-shaped fullerene polymers whose enveloping surface is assumed to be a dumbbell-shaped hollow tube.
description: 4 pages, 4 figures
Semileptonic $B_{c}^{-}\to D^{*0}\ellν$ transition in three--point QCD sum rules and HQET with gluon condensate corrections
Creators: name: Ghahramany, N.
name: Khosravi, R.
name: Azizi, K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Taking into account the gluon condensate contributions, the form factors of the semileptonic $B_c^- \to D^{*0}\ellν$ transition with $l=τ, e$ are calculated in the framework of the three point QCD sum rules. The heavy quark effective theory limit of the form factors are also computed. The relevant total decay width as well as the branching ratio are evaluated and compared with the predictions of the other non-perturbative approaches.
description: 27 Pages, 4 Figures and 4 Tables
The outburst duration and duty-cycle of GRS 1915+105
Creators: name: Deegan, P.
name: Combet, C.
name: Wynn, G. A.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The extraordinarily long outburst of GRS 1915+105 makes it one of the most remarkable low-mass X-ray binaries (LMXBs). It has been in a state of constant outburst since its discovery in 1992, an eruption which has persisted ~100 times longer than those of more typical LXMBs. The long orbital period of GRS 1915+105 implies that it contains large and massive accretion disc which is able to fuel its extreme outburst. In this paper, we address the longevity of the outburst and quiescence phases of GRS 1915+105 using Smooth Particle Hydrodynamics (SPH) simulations of its accretion disc through many outburst cycles. Our model is set in the two-alpha framework and includes the effects of the thermo-viscous instability, tidal torques, irradiation by central X-rays and wind mass loss. We explore the model parameter space and the examine the impact of the various ingredients. We predict that the outburst of GRS 1915+105 should last a minimum of 20 years and possibly up to ~100 years if X-ray irradiation is very significant. The predicted recurrence times are of the order of 10^4 years, making the X-ray duty cycle a few 0.1%. Such a low duty cycle may mean that GRS 1915+105 is not an anomaly among the more standard LMXBs and that many similar, but quiescent, systems could be present in the Galaxy.
description: 10 pages, 9 figures, accepted for publication by MNRAS
М. Ягодинська. Нові культові речі з давньоруських пам'яток Західного Поділля.
Creators: name: Ягодинська, Марина
Publisher: name: figshare
Year: 2025
Subjects: classificationCode: 430101
subject: Archaeological science

description: Матеріали і дослідження з археології Прикарпаття і Волині. Вип. 11. 2007
Mini-Workshop: Numerical Upscaling for Flow Problems: Theory and Applications
Creators: name: (:Unkn) Unknown
Publisher: name: Zürich : EMS Publ. House
Year: 2009
Subjects: subject: Konferenzschrift
subject: 510

description: The objective of this workshop was to bring together researchers working in multiscale simulations with emphasis on multigrid methods and multiscale ﬁnite element methods, aiming at chieving of better understanding and synergy between these methods. The goal of multiscale ﬁnite element methods, as upscaling methods, is to compute coarse scale solutions of the underlying equations as accurately as possible. On the other hand, multigrid methods attempt to solve ﬁne-scale equations rapidly using a hierarchy of coarse spaces. Multigrid methods need “good” coarse scale spaces for their eﬃciency. The discussions of this workshop partly focused on approximation properties of coarse scale spaces and multigrid convergence. Some other presentations were on upscaling, domain decomposition methods and nonlinear multiscale methods. Some researchers discussed applications of these methods to reservoir simulations, as well as to simulations of ﬁltration, insulating materials, and turbulence.
Doubly-magic nature of 56Ni: measurement of the ground state nuclear magnetic dipole moment of 55Ni
Creators: name: Berryman, J. S.
name: Minamisono, K.
name: Rogers, W. F.
name: Brown, B. A.
name: Crawford, H. L.
name: Grinyer, G. F.
name: Mantica, P. F.
name: Stoker, J. B.
name: Towner, I. S.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The nuclear magnetic moment of the ground state of $^{55}$Ni ($I^π=3/2^{-}, T_{1/2}=204$ ms) has been deduced to be $|μ$^{55}Ni)$|=(0.976 \pm 0.026)$ $μ_N$ using the $β$-NMR technique. Results of a shell model calculation in the full \textit{fp} shell model space with the GXPF1 interaction reproduce the experimental value. Together with the known magnetic moment of the mirror partner $^{55}$Co, the isoscalar spin expectation value was extracted as $=0.91 \pm 0.07$. The $$ shows a similar trend as that established in the \textit{sd} shell. The present theoretical interpretations of both $μ(^{55}$Ni) and $$ for the $T=1/2$, A=55 mirror partners support the softness of the $^{56}$Ni core.
description: 13 pages, 1 figure, accepted for publication in Phys. Rev. C
Room-temperature implementation of the Deutsch-Jozsa algorithm with a single electronic spin in diamond
Creators: name: Shi, Fazhan
name: Rong, Xing
name: Xu, Nanyang
name: Wang, Ya
name: Wu, Jie
name: Chong, Bo
name: Peng, Xinhua
name: Kniepert, Juliane
name: Schoenfeld, Rolf-Simon
name: Harneit, Wolfgang
name: Feng, Mang
name: Du, Jiangfeng
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The nitrogen-vacancy defect center (NV center) is a promising candidate for quantum information processing due to the possibility of coherent manipulation of individual spins in the absence of the cryogenic requirement. We report a room-temperature implementation of the Deutsch-Jozsa algorithm by encoding both a qubit and an auxiliary state in the electron spin of a single NV center. By thus exploiting the specific S=1 character of the spin system, we demonstrate how even scarce quantum resources can be used for test-bed experiments on the way towards a large-scale quantum computing architecture.
description: 4 pages, 4 figures
Fluorinated dihydropyridines as candidates to block L-type voltage-dependent calcium channels
Creators: name: Spadeto, João Paulo Menezes
name: Freitas, Matheus P.
name: Cormanich, Rodrigo A.
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: Molecular Biology
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer

description: Voltage-gated calcium (Cav) channels malfunction may lead to Alzheimer's and cardiovascular disorders, thus a critical protein target for drug development and treatment against several diseases. Indeed, dihydropyridines (DHPs) as nifedipine and amlodipine are top-selling pharmaceuticals and, respectively, the 121st and 5th most prescribed drugs in the United States that have been used as successful selective blockers for L-type Ca2+ channels (LCC) and may be helpful model structures to compare with new DHP analogs. In this context, we have performed a structure-based drug design (SBDD) study of several fluorinated DHPs by using homology modeling, molecular docking, quantitative structure activity relationship (QSAR) and molecular dynamics calculations. Such approaches combined with molecular mechanics Poisson-Boltzmann surface area (MM/PBSA) interaction energy results and screening of ADMET (absorption, distribution, metabolism, excretion and toxicity) properties indicate that all ligands in this study are potential new candidates to be tested experimentally for inhibition of LCC and may have higher affinities than the commonly used drugs, being convenient synthetic routes proposed for 11–16, which are among the ligands that showed the best theoretical results concerning LCC inhibition. Furthermore, the ligand interactions with the binding site were carefully examined using the topological noncovalent interactions (NCI) method, which highlighted specifically responsible amino acid residues that increase the spontaneity of the new proposed DHP ligands. Communicated by Ramaswamy H. Sarma
title: Τεχνικές και εφαρμογές συστημάτων επικοινωνίας 5G
title: Techniques and applications of 5G communication systems
titleType: AlternativeTitle
Creators: name: Δημητρίου, Δημήτριος
Publisher: name: Πανεπιστήμιο Δυτικής Αττικής
Year: 2023
Subjects: Αρχιτεκτονική
Ασύρματα δίκτυα
5G
IoT
Διαδίκτυο πραγμάτων
Cloud
Fog computing
Εφαρμογές

description: H παρούσα εργασία πραγματεύεται τις τεχνικές και τις εφαρμογές των συστημάτων επικοινωνίας 5G. Αρχικά επιχειρείται η εισαγωγή στα ασύρματα δίκτυα και συγκρίνονται οι τεχνολογίες από το 1G έως το 5G. Στο 2ο Κεφάλαιο, περιγράφονται οι τεχνικές μετάδοσης των συστημάτων 5G και αναλύεται η αρχιτεκτονική τους, το Δίκτυο πυρήνα καθώς επίσης και ο κατακερματισμός του. Επιπλέον, αναλύονται οι τεχνολογίες IOT, Cloud και Fog, οι οποίες συνδυάζονται με την τεχνολογία 5G, ενώ γίνεται διεξοδική περιγραφή των τύπων των επιθέσεων στα συστήματα 5G και τα μέτρα ασφάλειας. Τέλος, στο 3ο Kεφάλαιο περιέχει τα σενάρια χρήσης και τις κυριότερες εφαρμογές των συστημάτων 5G και η εργασία ολοκληρώνεται με χρήσιμα συμπεράσματα.
Understanding the structure of the proton at the LHC
Creators: name: Schoeffel, Laurent
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Understanding the fundamental structure of matter requires an understanding of how quarks and gluons are assembled to form hadrons and of the structure of the protons which are the colliding particles at LHC. The arrangement of quarks and gluons inside nucleons can be probed by accelerating electrons, hadrons or nuclei to precisely controlled energies, smashing them into a target nucleus and examining in detail the final products. The LHC physics program is rich and has been widely described. It encompasses the searches for new particles up to masses of several TeV, including the elucidation of electroweak symmetry breaking and the possible observation of new symmetries at higher scales, and precision measurements of fundamental parameters in the electroweak and strong gauge sectors. Obviously, this program requires a precise understanding of the structure of the proton in terms of quarks and gluons, obtained from HERA and Tevatron. However, the knowledge on parton distribution functions (PDFs) is still limited for many aspects of LHC physics and the discovery potential is thus reduced. In this proceeding, we show on one example that it is possible to find some observables less sensitive to PDF uncertainties to probe with a high efficency new physics beyond the standard model.
description: 3 pages, 1 figure, proceedings of the 2009 Europhysics Conference on High Energy Physics, 16-22 July 2009 Krakow, Poland
Mini-Workshop: The Pisot Conjecture - From Substitution Dynamical Systems to Rauzy Fractals and Meyer Sets
Creators: name: (:Unkn) Unknown
Publisher: name: Zürich : EMS Publ. House
Year: 2009
Subjects: subject: Konferenzschrift
subject: 510

description: This mini-workshop brought together researchers with diverse backgrounds and a common interest in facets of the Pisot conjecture, which relates certain properties of a substitution to dynamical properties of the associated subshift.
Effect of Holstein phonons on the optical conductivity of gapped graphene
Creators: name: Jahanbani, Kh.
name: Asgari, Reza
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We study the optical conductivity of a doped graphene when a sublattice symmetry breaking is occurred in the presence of the electron-phonon interaction. Our study is based on the Kubo formula that is established upon the retarded self-energy. We report new features of both the real and imaginary parts of the quasiparticle self-energy in the presence of a gap opening. We find an analytical expression for the renormalized Fermi velocity of massive Dirac Fermions over broad ranges of electron densities, gap values and the electron-phonon coupling constants. Finally we conclude that the inclusion of the renormalized Fermi energy and the band gap effects are indeed crucial to get reasonable feature for the optical conductivity.
description: 12 pages, 4 figures. To appear in Eur. Phys. J. B
Mini-Workshop: Non-Negativity is a Quantum Phenomenon
Creators: name: (:Unkn) Unknown
Publisher: name: Zürich : EMS Publ. House
Year: 2009
Subjects: subject: Konferenzschrift
subject: 510

description: In recent publications, the same combinatorial description has arisen for three separate objects of interest: non-negative cells in the real grassmannian (Postnikov, Williams); torus orbits of symplectic leaves in the classical grassmannian (Brown, Goodearl and Yakimov); and, torus invariant prime ideals in the quantum grassmannian (Launois, Lenagan and Rigal). The aim of this meeting was to explore the reasons for this coincidence in matrices and the grassmannian in particular, and to explore similar ideas in more general settings.
Enveloping Algebras and Geometric Representation Theory
Creators: name: (:Unkn) Unknown
Publisher: name: Zürich : EMS Publ. House
Year: 2009
Subjects: subject: Konferenzschrift
subject: 510

description: The meeting brought together experts investigating Lie theory from the geometric, algebraic and combinatorial points of view to discuss recent progress and bring forward the research in this area by fostering scientiﬁc interaction.
Characterization of the Torsional Piezoelectric-like Response of Tantalum Trisulfide Associated with Charge-Density-Wave Depinning
Creators: name: Nichols, J.
name: Dominko, D.
name: Ladino, L.
name: Zhou, J.
name: Brill, J. W.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We have studied the frequency and voltage dependence of voltage-induced torsional strains in orthorhombic TaS3 [V. Ya. Pokrovskii, et al, Phys. Rev. Lett. 98, 206404 (2007)] by measuring the modulation of the resonant frequency of an RF cavity containing the sample. The strain has an onset voltage below the charge-density-wave (CDW) threshold voltages associated with changes in shear compliance and resistance, suggesting that the strain is associated with polarization of the CDW rather than CDW current. Measurements with square-wave voltages show that the strain is very sluggish, not even reaching its dc value at a frequency of 0.1 Hz, but the dynamics appear to be very sample dependent. By applying oscillating torque while biasing the sample with a dc current, we have also looked for strain induced voltage in the sample; none is observed at the low biases where the voltage-induced strains first occur, but an induced voltage is observed at higher biases, probably associated with strain-dependent CDW conductance.
description: 11 pages, including 3 figures, to be published in Phys. Rev. B (Rapid Comm.)
The age and growth of the white sturgeon (Acipenser transmontanus richardson) of the Fraser River, British Columbia, Canada.
Creators: name: Semakula, Saul Nelson
Publisher: name: University of British Columbia
Year: 2011

description: Between May 1 and October 28, 1962, growth data were obtained from 255 specimens of white sturgeon (Acipenser transmontanus, Richardson) from the Fraser River, British Columbia, Canada. Most of the specimens measuring 36" and over in length were those caught incidentally in the salmon fishermen's nets in the lower part, of the Fraser River as far upstream as Langley, British Columbia. Specimens smaller than this length were gill-netted at Dewdney Slough near Mission City, British Columbia. Age was determined for 230 specimens from sections of the first pectoral fin rays. Sections from the rest of the materials were unreadable. Growth in length was studied by averaging observed length at capture and relating these to age, and also by back-calculating growth at the different ages of the fish's life. Growth in weight was studied by averaging the observed weights at times of capture and relating these to age and also by calculating weights at different lengths using the length-weight relationship. From the study of growth in length it was revealed that growth in both sexes is similar up to age twenty, but after that age the females grow faster than the males. It was also revealed that neither of the sexes grows to a fixed maximum length. Study of growth in weight revealed a similar pattern until the fish reached 30", but after that length the females had an advantage over the males. An attempt was made to determine the age at spawning maturity by relating cessation of growth to the maturation of the gonads. It was found that some males start spawning at age eleven, but females may not spawn until they reach age twenty-five to twenty-seven. Periods between spawnings are variable in the different individuals, but may range from five to ten years. A study of the mortality rates in the Fraser River white sturgeon revealed that the present fishing mortality rate is excessive. As a result the fishery is now utilising fish from the young age groups, which may lead to the depletion of stocks. Due to the incidental nature of the fishery it is not practically possible to introduce measures which would effect a reduction in the fishing mortality. It is suggested there be introduced measures which would protect the spawning stocks. These include introduction of a 54" maximum size-limit beyond which length no sturgeon may be taken, complete prohibition of the set-line fishery, and prohibition of sturgeon fishing on the Fraser in the area between Langley and Yale, British Columbia.
Sparse Recovery Problems in High Dimensions: Statistical Inference and Learning Theory
Creators: name: (:Unkn) Unknown
Publisher: name: Zürich : EMS Publ. House
Year: 2009
Subjects: subject: Konferenzschrift
subject: 510

description: The statistical analysis of high dimensional data requires new techniques, extending results from nonparametric statistics, analysis, probability, approximation theory, and theoretical computer science. The main problem is how to unveil, (or to mimic performance of) sparse models for the data. Sparsity is generally meant in terms of the number of variables included, but may also be described in terms of smoothness, entropy, or geometric structures. A key objective is to adapt to unknown sparsity, yet keeping computational feasibility.
Instanton constituents and fermionic zero modes in twisted CP(n) models
Creators: name: Brendel, Wieland
name: Bruckmann, Falk
name: Janssen, Lukas
name: Wipf, Andreas
name: Wozar, Christian
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Lattice (hep-lat)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We construct twisted instanton solutions of CP(n) models. Generically a charge-k instanton splits into k(n+1) well-separated and almost static constituents carrying fractional topological charges and being ordered along the noncompact direction. The locations, sizes and charges of the constituents are related to the moduli parameters of the instantons. We sketch how solutions with fractional total charge can be obtained. We also calculate the fermionic zero modes with quasi-periodic boundary conditions in the background of twisted instantons for minimally and supersymmetrically coupled fermions. The zero modes are tracers for the constituents and show a characteristic hopping. The analytical findings are compared to results extracted from Monte-Carlo generated and cooled configurations of the corresponding lattice models. Analytical and numerical results are in full agreement and it is demonstrated that the fermionic zero modes are excellent filters for constituents hidden in fluctuating lattice configurations.
description: 11 pages, 11 figures
Search for VHE $γ$-ray emission from the globular cluster M13 with the MAGIC telescope
Creators: name: MAGIC Collaboration
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Based on MAGIC observations from June and July 2007, we have obtained an integral upper limit to the VHE energy emission of the globular cluster M13 of $F(E>200 \textrm{GeV})<5.1\times10^{-12} \textrm{cm}^{-2} \textrm{s}^{-1}$, and differential upper limits for $E>140 \textrm{GeV}$. Those limits allow us to constrain the population of millisecond pulsars within M13 and to test models for acceleration of leptons inside their magnetospheres and surrounding. We conclude that in M13 either millisecond pulsars are fewer than expected or they accelerate leptons less efficiently than predicted.
Additional file 7 of Integrated proteogenomic characterization of urothelial carcinoma of the bladder
Creators: name: Xu, Ning
name: Yao, Zhenmei
name: Shang, Guoguo
name: Ye, Dingwei
name: Wang, Haixing
name: Zhang, Hailiang
name: Qu, Yuanyuan
name: Xu, Fujiang
name: Wang, Yunzhi
name: Qin, Zhaoyu
name: Zhu, Jiajun
name: Zhang, Fan
name: Feng, Jinwen
name: Tian, Sha
name: Liu, Yang
name: Zhao, Jianyuan
name: Hou, Jun
name: Guo, Jianming
name: Hou, Yingyong
name: Ding, Chen
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Cancer

description: Additional file 7. Fig. S7: Proteomic subtypes of UC and signature proteins. Related to Figure 5. (A) Distributions of main COSMIC signatures in the proteomic subtypes across 116 UC patients. Right: Heatmap of the comparison between different proteomic subtypes. (B) Association of mutational signatures with clinical features (Wilcoxon rank-sum test, p < 0.05). (C) Evaluation of kinase activities by KSEA in tumors across the three proteomic subtypes. (D) Mutational hotspots of FGFR3 in this study. (E) Mutational hotspots of FGFR3 in TCGA cohort.
Summary analysis of NHS face-to-face general practice models during the first wave of the COVID-19 pandemic in England, March to July 2020
Creators: name: Duncan, Lorna
name: Cheng, Kelly
Publisher: name: figshare
Year: 2021
Subjects: subject: 111717 Primary Health Care
subject: FOS: Health sciences

description: Summary anaylsis of CCG responses to the study team's Freedom Of Information request concerning local models of face-to-face GP delivery across England during the first wave of the pandemic, March-July 2020.
Data supplied in this table is the authors' interpretation of responses received and has not been approved or otherwise by the CCGs. It relates to the period between March 2020 and the response date (shown) by each CCG.
On AGT relation in the case of U(3)
Creators: name: Mironov, A.
name: Morozov, A.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the AGT relation, expressing conformal blocks for the Virasoro and W-algebras in terms of Nekrasov's special functions, in the simplest case of the 4-point functions for the first non-trivial W_3 algebra. The standard set of Nekrasov functions is sufficient only if additional null-vector restriction is imposed on a half of the external $W$-primaries and this is just the case when the conformal blocks are fully dictated by W-symmetry and do not depend on a particular model. Explicit checks confirm that the AGT relation survives in this restricted case, as expected.
description: 30 pages
Home-Brewed Alcohol, Gender, and Violence in the West Papuan Highlands
Creators: name: Munro, Jenny
Publisher: name: Canberra, ACT : Coral Bell School of Asia Pacific Affairs, College of Asia and the Pacific, The Australian National University
Year: 2014

description: Alcohol is officially banned in the West Papuan highlands, but home-brewed alcohol (minuman lokal in Indonesian, literally, 'local drink') is inexpensive, widely available, and transforming interpersonal, political, and gendered violence in the area. Scholarship on alcohol in the Pacific views consumption as a mode of male social differentiation related to racialised power and status, owing to the gendered, colonial history of alcohol consumption (Marshall 1982), as well as the 'prestige economy' of burgeoning resource sectors (Macintyre and Bainton 2013). In contrast to beer and other forms of alcohol, home-brew has received less attention.