cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A Novel Passivity-Based Trajectory Tracking Control For Conservative Mechanical Systems
Creators: name: Mahony, Robert
Publisher: name: arXiv
Year: 2021
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Most passivity based trajectory tracking algorithms for mechanical systems can only stabilise reference trajectories that have constant energy. This paper overcomes this limitation by deriving a single variable Hamiltonian model for the reference trajectory and solving along the constrained trajectory to obtain a reference potential. This potential is then used as the model to shape the energy of the true system such that its free solutions include the desired reference trajectory. The proposed trajectory tracking algorithm interconnects the reference and true systems through a virtual spring damper along with an outer-loop energy pump/damper that stabilises the desired energy level of the interconnected system, ensuring asymptotic tracking of the desired trajectory. The resulting algorithm is a fully energy based trajectory tracking control for non-stationary trajectories of conservative mechanical systems.
Cohomologically hyperbolic endomorphisms of complex manifolds
Creators: name: Zhang, De-Qi
Publisher: name: arXiv
Year: 2008
Subjects: subject: Dynamical Systems (math.DS)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14E20, 14E07, 32H50

description: We show that if a compact Kahler manifold X admits a cohomologically hyperbolic surjective endomorphism then its Kodaira dimension is non-positive. This gives an affirmative answer to a conjecture of Guedj in the holomorphic case. The main part of the paper is to determine the geometric structure and the fundamental groups (up to finite index) for those X of dimension 3.
description: International Journal of Mathematics (to appear)
Spin-resolved thermal signatures of Majorana-Kondo interplay in double quantum dots
Creators: name: Majek, Piotr
name: Wójcik, Krzysztof P.
name: Weymann, Ireneusz
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate theoretically the thermoelectric transport properties of a T-shaped double quantum dot side-coupled to a topological superconducting nanowire hosting Majorana zero-energy modes. The calculations are performed using the numerical renormalization group method focusing on the transport regime, where the system exhibits the two-stage Kondo effect. It is shown that the leakage of Majorana quasiparticles into the double dot system results in a half-suppression of the second stage of the Kondo effect, which is revealed through fractional values of the charge and heat conductances and gives rise to new resonances in the Seebeck coefficient. The heat conductance is found to satisfy a modified Wiedemann-Franz law. Finally, the interplay of Majorana-induced interference with strong electron correlations is discussed in the behavior of the spin Seebeck effect, a unique feature of the considered setup.
description: 16 pages, 11 figures
Consistency of ground state and spectroscopic measurements on flux qubits
Creators: name: Izmalkov, A.
name: van der Ploeg, S. H. W.
name: Shevchenko, S. N.
name: Grajcar, M.
name: Il'ichev, E.
name: Hübner, U.
name: Omelyanchouk, A. N.
name: Meyer, H. -G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We compare the results of ground state and spectroscopic measurements carried out on superconducting flux qubits which are effective two-level quantum systems. For a single qubit and for two coupled qubits we show excellent agreement between the parameters of the pseudospin Hamiltonian found using both methods. We argue, that by making use of the ground state measurements the Hamiltonian of N coupled flux qubits can be reconstructed as well at temperatures smaller than the energy level separation. Such a reconstruction of a many-qubit Hamiltonian can be useful for future quantum information processing devices.
description: 4 pages, 4 figures
Universally defined representations of Lie conformal superalgebras
Creators: name: Kolesnikov, Pavel
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Algebra (math.QA)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 16S32; 16S99; 16W20

description: We distinguish a class of irreducible finite representations of conformal Lie (super)algebras. These representations (called universally defined) are the simplest ones from the computational point of view: a universally defined representation of a conformal Lie (super)algebra $L$ is completely determined by commutation relations of $L$ and by the requirement of associative locality of generators. We describe such representations for conformal superalgebras $W_n$, $n\ge 0$, with respect to a natural set of generators. We also consider the problem for superalgebras $K_n$. In particular, we find a universally defined representation for the Neveu--Schwartz conformal superalgebra $K_1$ and show that the analogues of this representation for $n\ge 2$ are not universally defined.
description: Presented at ASCM 2005, to appear in J. Symb. Comp
On the path density of a gradient field
Creators: name: Genovese, Christopher R.
name: Perone-Pacifico, Marco
name: Verdinelli, Isabella
name: Wasserman, Larry
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 62G99, 62G07, 62G20 (Primary)

description: We consider the problem of reliably finding filaments in point clouds. Realistic data sets often have numerous filaments of various sizes and shapes. Statistical techniques exist for finding one (or a few) filaments but these methods do not handle noisy data sets with many filaments. Other methods can be found in the astronomy literature but they do not have rigorous statistical guarantees. We propose the following method. Starting at each data point we construct the steepest ascent path along a kernel density estimator. We locate filaments by finding regions where these paths are highly concentrated. Formally, we define the density of these paths and we construct a consistent estimator of this path density.
description: Published in at http://dx.doi.org/10.1214/08-AOS671 the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Holographic Observables at Large $d$
Creators: name: Giataganas, Dimitrios
name: Pappas, Nikolaos
name: Toumbas, Nicolaos
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study holographically non-local observables in field theories at finite temperature and in the large $d$ limit. These include the Wilson loop, the entanglement entropy, as well as an extension to various dual extremal surfaces of arbitrary codimension. The large $d$ limit creates a localized potential in the near horizon regime resulting in a simplification of the analysis for the non-local observables, while at the same time retaining their qualitative physical properties. Moreover, we study the monotonicity of the coefficient $α$ of the entanglement's area term, the so called area theorem. We find that the difference between the UV and IR of the $α$-values, normalized with the thermal entropy, converges at large $d$ to a constant value which is obtained analytically. Therefore, the large $d$ limit may be used as tool for the study and (in)validation of the renormalization group monotonicity theorems. All the expectation values of the observables under study show rapid convergence to certain values as $d$ increases. The extrapolation of the large $d$ limit to low and intermediate dimensions shows good quantitative agreement with the numerical analysis of the observables.
description: 1+33 pages, 14 Figures; v2: matching the published version
New results on proton-induced reactions on Vanadium for $^{47}$Sc production and the impact of level densities on theoretical cross sections
Creators: name: Barbaro, F.
name: Canton, L.
name: Carante, M. P.
name: Colombi, A.
name: De Dominicis, L.
name: Fontana, A.
name: Haddad, F.
name: Mou, L.
name: Pupillo, G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: New data for the $^\mbox{nat}$V(p,x) reactions have been measured in the range 26-70 MeV, with production of the nuclides $^{47}$Sc, $^{43}$Sc, $^{44m}$Sc, $^{44g}$Sc, $^{46}$Sc, $^{48}$Sc, $^{42}$K, $^{43}$K, $^{48}$V, $^{48}$Cr, $^{49}$Cr, and $^{51}$Cr. The focus is on the production of $^{47}$Sc, a $β^-$-emitter suitable for innovative radiotheranostic applications in nuclear medicine. The measured cross sections for this radionuclide and its contaminants are compared with the theoretical excitation functions calculated with the TALYS code. In view of novel radiopharmaceutical applications, it is essential to accurately describe these cross-sections for the evaluation of yields, purities, and dose releases. Hence, we optimize the level-density parameters of the microscopic models in the TALYS code to obtain the best possible descriptions of the new data. We consider different irradiation conditions to estimate the production yields from the cross sections determined in this work.
description: 31 pages, 18 figures, 5 tables
A lower bound on the mass of Dark Matter particles
Creators: name: Boyarsky, Alexey
name: Ruchayskiy, Oleg
name: Iakubovskyi, Dmytro
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We discuss the bounds on the mass of Dark Matter (DM) particles, coming from the analysis of DM phase-space distribution in dwarf spheroidal galaxies (dSphs). After reviewing the existing approaches, we choose two methods to derive such a bound. The first one depends on the information about the current phase space distribution of DM particles only, while the second one uses both the initial and final distributions. We discuss the recent data on dSphs as well as astronomical uncertainties in relevant parameters. As an application, we present lower bounds on the mass of DM particles, coming from various dSphs, using both methods. The model-independent bound holds for any type of fermionic DM. Stronger, model-dependent bounds are quoted for several DM models (thermal relics, non-resonantly and resonantly produced sterile neutrinos, etc.). The latter bounds rely on the assumption that baryonic feedback cannot significantly increase the maximum of a distribution function of DM particles. For the scenario in which all the DM is made of sterile neutrinos produced via non-resonant mixing with the active neutrinos (NRP) this gives m_nrp > 1.7 keV. Combining these results in their most conservative form with the X-ray bounds of DM decay lines, we conclude that the NRP scenario remains allowed in a very narrow parameter window only. This conclusion is independent of the results of the Lyman-alpha analysis. The DM model in which sterile neutrinos are resonantly produced in the presence of lepton asymmetry remains viable. Within the minimal neutrino extension of the Standard Model (the nuMSM), both mass and the mixing angle of the DM sterile neutrino are bounded from above and below, which suggests the possibility for its experimental search.
description: 20 pages, published in JCAP
Dispersion of the western winter wren (Troglodytes troglodytes pacificus [Baird]) in coastal western hemlock forest at the University of British Columbia Research Forest in south-western British Columbia
Creators: name: McLachlin, Roderick Archibald
Publisher: name: University of British Columbia
Year: 2010

description: I studied the dispersion of winter wrens in 100-year-old, second-growth, coastal western hemlock forest at the University of British Columbia Research Forest in southwestern British Columbia from 1978-81. Male winter wrens were territorial on non-overlapping territories at an average density of 60 per km2. An average of 8% were polygamous. Females occupied generally non-overlapping home ranges at least during the breeding period, but were not shown territorial, although this possibility could not be excluded. Winter wrens were not uniformly distributed but showed differential use of various individual ecosystems (as mapped by Klinka 1976) and ecosystems grouped by forest floor habitats. Surplus, potentially territorial males were available during the breeding period which could have occupied the empty or sparsely occupied areas. Invertebrate food was more abundant in habitats used by winter wrens as compared to avoided habitats, and, food is proposed as a factor in habitat selection by winter wrens. I propose that winter wrens are spaced by territoriality and clumped by suitable habitat, and suggest that these two factors influence the patterns of dispersion of winter wrens in coastal western hemlock forest, and perhaps elsewhere as well. Klinka's ecosystems and grouped ecosystems were proposed as indicative of the distribution of winter wrens, and perhaps of other wildlife species generally. If so, ecosystems can arid should be used as the base for the study and management of wildlife in the province of British Columbia, and perhaps elsewhere as well.
Superconductor in static gravitational, electric and magnetic fields with vortex lattice
Creators: name: Ummarino, Giovanni
name: Gallerati, Antonio
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Superconductivity (cond-mat.supr-con)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We estimate the conjectured interaction between the Earth gravitational field and a superconductor immersed in external, static electric and magnetic field. The latter is close to the sample upper critical field and generates the presence of a vortex lattice. The proposed interaction could lead to multiple, measurable effects. First of all, a local affection of the gravitational field inside the superconductor could take place. Second, a new component of a generalized electric field parallel to the superconductor surface is generated inside the sample. The analysis is performed by using the time-dependent Ginzburg-Landau theory combined with the gravito-Maxwell formalism. This approach leads us to analytic solutions of the problem, also providing the average values of the generated fields and corrections inside the sample. We will also study which are the physical parameters to optimize and, in turn, the most suitable materials to maximize the effect.
description: 17 pages, 2 figures, 1 table (corrected figure scales)
Deontic stance
Creators: name: Stevanovic, Melisa
Publisher: name: OSF
Year: 2022
Subjects: Conversation Analysis
Encyclopedia
Ethnomethodology
Interactional Linguistics

description: Deontic stance refers to a participant’s publicly displayed and claimed strength of deontic rights relative to their co-participant(s) in a certain domain of action (Stevanovic 2018).
Scattering of backward spin waves in a one-dimensional magnonic crystal
Creators: name: Chumak, A. V.
name: Kostylev, M. P.
name: Serga, A. A.
name: Hillebrands, B.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Scattering of backward volume magnetostatic spin waves from a one-dimensional magnonic crystal, realized by a grating of shallow grooves etched into the surface of an yttrium-iron garnet film, was experimentally studied. Rejection frequency bands were clearly observed. The rejection efficiency and the frequency width of the rejection bands increase with increasing groove depth. A theoretical model based on the analogy of a spin-wave film-waveguide with a microwave transmission line was used to interpret the obtained experimental results.
description: 4 pages, 3 figures
A simple model to include initial-state and hot-medium effects in the computation of quarkonium nuclear modification factor
Creators: name: Escobedo, Miguel Ángel
name: Ferreiro, Elena G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Quarkonium suppression is one of the more useful observables to obtain information about the hot medium created in ultrarelativistic heavy-ion collisions. In this manuscript, we discuss a simple way to implement both the initial-state effects and the hot-medium evolution, and to compute the quarkonium nuclear modification factor if the survival probability for a bound state at a given energy density is known. Based on the Glauber model, the temperature of the evolving medium and the centrality dependence of the nuclear modification factor will be analysed.
description: 22 pages, 4 figure. Updated to match published version
Do All Integrable Evolution Equations Have the Painlevé Property?
Creators: name: Tamizhmani, K. M.
name: Grammaticos, Basil
name: Ramani, Alfred
Publisher: name: arXiv
Year: 2007
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We examine whether the Painleve property is necessary for the integrability of partial differential equations (PDEs). We show that in analogy to what happens in the case of ordinary differential equations (ODEs) there exists a class of PDEs, integrable through linearisation, which do not possess the Painleve property. The same question is addressed in a discrete setting where we show that there exist linearisable lattice equations which do not possess the singularity confinement property (again in analogy to the one-dimensional case).
description: Published in SIGMA (Symmetry, Integrability and Geometry: Methods and Applications) at http://www.emis.de/journals/SIGMA/
Single Atoms on an Optical Nanofiber
Creators: name: Nayak, K. P.
name: Hakuta, K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show that single-atoms can be trapped on the surface of a subwavelength-diameter silica-fiber, an optical nanofiber, without any external field, and that single photons spontaneously emitted from the atoms can be readily detected through the single guided-mode of the nanofiber. A key point of the work is our finding that atom trapping sites are created on the nanofiber surface by irradiating the atom cloud around the nanofiber with a violet laser radiation.
description: 4 pages, 5 figures
Dynamics of hot random hyperbolic graphs
Creators: name: Papadopoulos, Fragkiskos
name: Zambirinis, Sofoclis
Publisher: name: arXiv
Year: 2021
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Social and Information Networks (cs.SI)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: We derive the most basic dynamical properties of random hyperbolic graphs (the distributions of contact and intercontact durations) in the hot regime (network temperature $T > 1$). We show that for sufficiently large networks the contact distribution decays as a power law with exponent $2+T > 3$ for durations $t > T$, while for $t < T$ it exhibits exponential-like decays. This result holds irrespective of the expected degree distribution, as long as it has a finite $T^{\text{th}}$ moment. Otherwise, the contact distribution depends on the expected degree distribution and we show that if the latter is a power law with exponent $γ\in (2, T+1]$, then the former decays as a power law with exponent $γ+1 > 3$. On the other hand, the intercontact distribution exhibits power-law decays with exponent $2-T \in (0, 1)$ for $T \in (1,2)$, while for $T > 2$ it displays linear decays with a slope that depends on the observation interval. This result holds irrespective of the expected degree distribution as long as it has a finite $T^{\text{th}}$ moment if $T \in (1,2)$, or a finite second moment if $T > 2$. Otherwise, the intercontact distribution depends on the expected degree distribution and if the latter is a power law with exponent $γ\in (2, 3)$, then the former decays as a power law with exponent $3-γ\in (0,1)$. Thus, hot random hyperbolic graphs can give rise to contact and intercontact distributions that both decay as power laws. These power laws however are unrealistic for the case of the intercontact distribution, as their exponent is always less than one. These results mean that hot random hyperbolic graphs are not adequate for modeling real temporal networks, in stark contrast to cold random hyperbolic graphs ($T < 1$). Since the configuration model emerges at $T \to \infty$, these results also suggest that this is not an adequate null temporal network model.
Additional file 1 of Impact of socio-economic factors on Tuberculosis treatment outcomes in north-eastern Uganda: a mixed methods study
Creators: name: Nidoi, Jasper
name: Muttamba, Winters
name: Walusimbi, Simon
name: Imoko, Joseph F.
name: Lochoro, Peter
name: Ictho, Jerry
name: Mugenyi, Levicatus
name: Sekibira, Rogers
name: Turyahabwe, Stavia
name: Byaruhanga, Raymond
name: Putoto, Giovanni
name: Villa, Simone
name: Raviglione, Mario C.
name: Kirenga, Bruce
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 1. Interview Guides. Interview guides used for key informant interviews of health care workers and focus group discussions among former TB patients.
Fermions and noncommutative theories
Creators: name: Amorim, Ricardo
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: By using a framework where the object of noncommutativity $θ^{μν}$ represents independent degrees of freedom, we study the symmetry properties of an extended $x+θ$ space-time, given by the group $P$', which has the Poincaré group $P$ as a subgroup. In this process we use the minimal canonical extension of the Doplicher, Fredenhagen and Roberts algebra. It is also proposed a generalized Dirac equation, where the fermionic field depends not only on the ordinary coordinates but on $θ^{μν}$ as well. The dynamical symmetry content of such fermionic theory is discussed, and we show that its action is invariant under $\cal P$'.
description: 10 pages, Latex, published version
Mesoscopic fluctuations in the spin-electric susceptibility due to Rashba spin-orbit interaction
Creators: name: Duckheim, Mathias
name: Loss, Daniel
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate mesoscopic fluctuations in the spin polarization generated by a static electric field and by Rashba spin-orbit interaction in a disordered 2D electron gas. In a diagrammatic approach we find that the out-of-plane polarization -- while being zero for self-averaging systems -- exhibits large sample-to-sample fluctuations which are shown to be well within experimental reach. We evaluate the disorder-averaged variance of the susceptibility and find its dependence on magnetic field, spin-orbit interaction, dephasing, and chemical potential difference.
description: 4 pages, 4 figures
Small Deviation Probability via Chaining
Creators: name: Aurzada, Frank
name: Lifshits, Mikhail
Publisher: name: arXiv
Year: 2007
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: We obtain several extensions of Talagrand's lower bound for the small deviation probability using metric entropy. For Gaussian processes, our investigations are focused on processes with sub-polynomial and, respectively, exponential behaviour of covering numbers. The corresponding results are also proved for non-Gaussian symmetric stable processes, both for the cases of critically small and critically large entropy. The results extensively use the classical chaining technique; at the same time they are meant to explore the limits of this method.
description: to appear in: Stochastic Processes and Their Applications
Critical properties of various sizes of cluster in the Ising percolation transition
Creators: name: Chen, Lizhu
name: Zhao, Yeyin
name: Li, Xiaobing
name: Li, Zhiming
name: Wu, Yuanfang
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: It is proposed that the $O(n)$ spin and geometrical percolation models can help to study the QCD phase diagram due to the universality properties of the phase transition. In this paper, correlations and fluctuations of various sizes of cluster in the Ising model are systematically studied. With a finite size system, we demonstrate how to use the finite size scaling and fixed point behavior to search for critical point. At critical point, the independency of system size is found from skewness and kurtosis of the maximum, second and third largest cluster and their correlations. It is similar to the Binder-ratio, which has provided a remarkable identification of the critical point. Through an explanation of the universal characteristic of skewness and kurtosis of the order parameter, a possible application to the relativistic heavy-ion collisions is also discussed.
description: 12 pages, 5 figures. Accepted by IJMPE
A solution to the hierarchy problem from an almost decoupled hidden sector within a classically scale invariant theory
Creators: name: Foot, Robert
name: Kobakhidze, Archil
name: McDonald, Kristian L.
name: Volkas, Raymond R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: If scale invariance is a classical symmetry then both the Planck scale and the weak scale should emerge as quantum effects. We show that this can be realized in simple scale invariant theories with a hidden sector. The weak/Planck scale hierarchy emerges in the (technically natural) limit where the hidden sector decouples from the ordinary sector. The weak scale is protected from quadratic divergences because of classical scale invariance, so there is no hierarchy problem.
description: 10 pages
Exploring the Nuclear Environment of the NLS1 Galaxy Arakelian 564 with XMM-Newton RGS
Creators: name: Smith, R. A. N.
name: Page, M. J.
name: Branduardi-Raymont, G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present an accurate characterisation of the high-resolution X-ray spectrum of the Narrow Line Seyfert 1 galaxy Arakelian 564 and put it in to context with other objects of its type by making a detailed comparison of their spectra. The best fit to the data identifies five significant emission lines at 18.9, 22.1, 24.7, 29.0 and 33.5A due O VIII Ly alpha, O VII(f), N VII Ly alpha, N VI(i) and C VI Ly alpha respectively. These have an RMS velocity of ~1100km/s and a flow velocity of ~-600km/s, except for the O VII(f) emission line, which has a flow velocity consistent with zero. Two separate emitting regions are identified. Three separate phases of photoionized, X-ray absorbing gas are included in the fit with ionization parameters log xi=-0.86, 0.87, 2.56 and column densities N_H=0.89, 2.41, 6.03*10^20cm^-2 respectively. All three phases show this to be an unusually low velocity outflow (-10pm100km/s) for a narrow line Seyfert 1. We present the hypothesis that the BLR is the source of the NLR and warm absorber, and examine optical and UV images from the XMM-Newton Optical Monitor to relate our findings to the characteristics of the host galaxy.
description: 11 pages, 11 figures. To be published in A&A
Additional file 2 of Impact of socio-economic factors on Tuberculosis treatment outcomes in north-eastern Uganda: a mixed methods study
Creators: name: Nidoi, Jasper
name: Muttamba, Winters
name: Walusimbi, Simon
name: Imoko, Joseph F.
name: Lochoro, Peter
name: Ictho, Jerry
name: Mugenyi, Levicatus
name: Sekibira, Rogers
name: Turyahabwe, Stavia
name: Byaruhanga, Raymond
name: Putoto, Giovanni
name: Villa, Simone
name: Raviglione, Mario C.
name: Kirenga, Bruce
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 2. Distribution by sociodemographic characteristics and wealth. Table of results.
The ATPase complex of Escherichia coli : studies on the DCCD-binding protein
Creators: name: Loo, Tip Wah
Publisher: name: University of British Columbia
Year: 2010

description: The ATPase complex of E. coll consists of two functional units. ECF[sub=1] is an extrinsic membrane protein having the active site(s) for ATP synthesis and hydrolysis. F₀ is intrinsic and catalyzes the reversible transfer of protons across the membrane. ECF[sub=1] consists of five polypeptides (α- ε) ranging in molecular weight from 13 000 - 57 000. F₀ has three polypeptides (9 000, 18 000, 24 000), the smallest of which is the dicyclohexylcarbodiimide (DCCD)-binding protein postulated to be a transmembrane pathway for proton translocation. An ECF₁F₀ complex was solubilized from the membranes of E. coli with N-lauroyl sarcosine and purified by chromatography on Phenyl-Sepharose CL-4B followed by sedimentation of the enzyme at 250 000 xg for 16-17 h. The purified ECF₁F₀ complex consisted of the eight polypeptides described above, as well as associated polypeptides of molecular weights 30 000, 28 000 and 14 000. Removal of ECF₁ from the membranes of the wild-type E. coli resulted in the membranes becoming leaky to protons so that they could not be energized. The unc mutants, E. coli AN382, CBT-302 and N₁₄₄ could maintain a proton gradient across the membrane in the absence of ECF₁. A normal DCCD-binding protein was present in the F₀ complex of each mutant. However, the 18 000 dalton polypeptide of F₀ was absent in the membranes of E. coli N₁₄₄, suggesting that it was required for a functional F₀. The involvement of the 18 000 dalton polypeptide in the proton-translocating activity was also suggested by the observation that this polypeptide was absent in the ECF₁F₀ complex immunoprecipitated from trypsin-treated "stripped" vesicles, which had been reconstituted with ECF₁. Although these trypsin-treated "stripped" vesicles could rebind ECF₁, the membranes could not be energized during ATP hydrolysis. Leakiness of the membranes to protons could be repaired by the reaction of the ECF₁ stripped membranes with DCCD or ECF₁. Similarly, antibody raised against the DCCD-binding protein prevented this leakage of protons. The antibody also inhibited the rebinding of ECF₁ to the "stripped" everted membrane vesicles. These results indicated that the DCCD-binding protein was exposed on the cytoplasmic surface of the cell. Attempts to show whether the DCCD-binding protein was transmembranous were not successful. Radioimmunoassay techniques were used to show In vitro, the involvement of the arginyl residue(s) of the DCCD-binding protein in the binding of ECF₁. Binding of ECF₁ to the DCCD-binding protein appeared to involve the α and/or β subunits of ECF₁. Chemical modification of the methionyl residue(s) of the DCCD-binding protein did not alter its capacity to bind ECF₁, but destroyed the antigenic site(s) of the polypeptide. In summary, these results are consistent with the proposed "loop" arrangement of the DCCD-binding protein in which the polar central region of this molecule is at the cytoplasmic surface of the cell membrane.
Additional file 3 of Impact of socio-economic factors on Tuberculosis treatment outcomes in north-eastern Uganda: a mixed methods study
Creators: name: Nidoi, Jasper
name: Muttamba, Winters
name: Walusimbi, Simon
name: Imoko, Joseph F.
name: Lochoro, Peter
name: Ictho, Jerry
name: Mugenyi, Levicatus
name: Sekibira, Rogers
name: Turyahabwe, Stavia
name: Byaruhanga, Raymond
name: Putoto, Giovanni
name: Villa, Simone
name: Raviglione, Mario C.
name: Kirenga, Bruce
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 3. Healthcare system factors and TB treatment outcomes. Table of results.
Additional file 1 of The vaccination threshold for SARS-CoV-2 depends on the indoor setting and room ventilation
Creators: name: Mikszewski, A.
name: Stabile, L.
name: Buonanno, G.
name: Morawska, L.
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: Cancer
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: 110309 Infectious Diseases
subject: 60506 Virology
subject: FOS: Biological sciences

description: Additional file 1: Supplementary Material.
Additional file 1 of Characteristics of the cytoplasmic halo during fertilisation correlate with the live birth rate after fresh cleaved embryo transfer on day 2 in minimal ovarian stimulation cycles: a retrospective observational study
Creators: name: Ezoe, Kenji
name: Miki, Tetsuya
name: Okimura, Tadashi
name: Uchiyama, Kazuo
name: Yabuuchi, Akiko
name: Kobayashi, Tamotsu
name: Kato, Keiichi
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Cell Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Developmental Biology

description: Additional file 1: Table S1. Characteristics of embryos. Table S2. Logistic regression analysis of presence of cytoplasmic halo and live births after fresh-cleavage embryo transfers. Table S3. Correlation of different time intervals with live births after fresh cleaved embryo transfers. Table S4. Multiple linear regression coefficients for time interval from tHc to tHr during fertilisation.
Instabilities of relativistic mean field models and the role of nonlinear terms
Creators: name: Sulaksono, A.
name: Mart, T.
name: Buervenich, T. J.
name: Maruhn, J. A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The instability of nuclear matter due to particle-hole excitation modes has been studied in the frame-work of several relativistic mean field (RMF) models. It is found that both the longitudinal and the transversal modes depend sensitively on the parameter sets used. The important impact of the vector and vector-scalar nonlinear terms on the stability of both modes is demonstrated. Our finding corroborates the result of previous studies, namely that certain RMF models cannot be used in high density applications. However, we show that for certain parameter sets of RMF models this shortcoming can be alleviated by adding these nonlinear terms.
description: 11 pages, 5 figures, accepted in Phys. Rev. C, typos corrected
Rebound Shock Breakouts of Exploding Massive Stars: A MHD Void Model
Creators: name: Hu, Ren-Yu
name: Lou, Yu-Qing
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: With a self-similar magnetohydrodynamic (MHD) model of an exploding progenitor star and an outgoing rebound shock and with the thermal bremsstrahlung as the major radiation mechanism in X-ray bands, we reproduce the early X-ray light curve observed for the recent event of XRO 080109/SN 2008D association. The X-ray light curve consists of a fast rise, as the shock travels into the "visible layer" in the stellar envelope, and a subsequent power-law decay, as the plasma cools in a self-similar evolution. The observed spectral softening is naturally expected in our rebound MHD shock scenario. We propose to attribute the "non-thermal spectrum" observed to be a superposition of different thermal spectra produced at different layers of the stellar envelope.
description: 4 pages, 1 figure, to appear in the proceedings of Nanjing 2008 GRB Conference, Nanjing, China, 23-27 June 2008
COGNITIVE AND ADAPTIVE CRYPTOGRAPHY: DEEP LEARNING'S ROLE IN DRIVEN INTELLIGENT CIPHER SYSTEMS
Creators: name: Amani Y. K. Al-Mulla
Publisher: name: Zenodo
Year: 2025

description: The increasing sophistication of cyber-attacks necessitates advanced cryptographic frameworks that can evolve dynamically to respond to evolving attack vectors. Available cryptographic mechanisms, including symmetric and asymmetric cryptography, homomorphic cryptography, and quantum-resistant cryptography, are premised on predetermined algorithms and static security parameters. These approaches, however, have limited adaptability, real-time threat detection, and adversarial attack resilience. Besides, conventional encryption modelsface key management complexity, computational expense, and vulnerability to machine learning-based cryptanalysis. In addressing the issues, this study proposes a Cognitive and Adaptive Cryptographic (CAC) system founded on Deep Learning (DL) techniques for intelligent cipher systems. The proposed model integrates Recurrent Neural Networks (RNNs) and Long Short-Term Memory (LSTM) networks for adaptive key generation, Generative Adversarial Networks (GANs) for attack detection and cryptanalysis, and Reinforcement Learning (RL) for policy optimization in terms of real-time threat appraisal. This adaptive approach enhances security by independently tuning encryption parameters according to detected anomalies, substantially reducing the risk of cryptographic attacks. The process entails dataset collection from encrypted communication records and simulated attacks, real-time anomaly detection model training, and performance analysis using key entropy, encryption rate, and computational efficiency as metrics. Experiment results indicate that the proposed CAC framework is more robust to adversarial attacks with 97.2% accuracy, computationally efficient, and encryptable compared to the conventional cryptographic techniques.
Random Walk Access Times on Partially-Disordered Complex Networks: an Effective Medium Theory
Creators: name: Parris, Paul E.
name: Candia, Julián
name: Kenkre, V. M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: An analytic effective medium theory is constructed to study the mean access times for random walks on hybrid disordered structures formed by embedding complex networks into regular lattices, considering transition rates $F$ that are different for steps across lattice bonds from the rates $f$ across network shortcuts. The theory is developed for structures with arbitrary shortcut distributions and applied to a class of partially-disordered traversal enhanced networks in which shortcuts of fixed length are distributed randomly with finite probability. Numerical simulations are found to be in excellent agreement with predictions of the effective medium theory on all aspects addressed by the latter. Access times for random walks on these partially disordered structures are compared to those on small-world networks, which on average appear to provide the most effective means of decreasing access times uniformly across the network.
description: 12 pages, 8 figures; added new results and discussion; added appendix on numerical procedures. To appear in PRE
From Euclidean to Minkowski space with the Cauchy-Riemann equations
Creators: name: Gimeno-Segovia, Mercedes
name: Llanes-Estrada, Felipe J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present an elementary method to obtain Green's functions in non-perturbative quantum field theory in Minkowski space from calculated Green's functions in Euclidean space. Since in non-perturbative field theory the analytical structure of amplitudes is many times unknown, especially in the presence of confined fields, dispersive representations suffer from systematic uncertainties. Therefore we suggest to use the Cauchy-Riemann equations, that perform the analytical continuation without assuming global information on the function in the entire complex plane, only in the region through which the equations are solved. We use as example the quark propagator in Landau gauge Quantum Chromodynamics, that is known from lattice and Dyson-Schwinger studies in Euclidean space. The drawback of the method is the instability of the Cauchy-Riemann equations to high-frequency noise, that makes difficult to achieve good accuracy. We also point out a few curiosities related to the Wick rotation.
description: 12 pages in EPJ double-column format, 16 figures. This version: added paragraph, two references
Additional file 1 of Impact of the SARS-CoV-2 (COVID19) pandemic on the morbidity and mortality of high risk patients undergoing surgery: a non-inferiority retrospective observational study
Creators: name: Caballero-Milán, Marta
name: Colomina, Maria J.
name: Marin-Carcey, Leo A.
name: Viguera-Fernandez, Laura
name: Bayona-Domenge, Roser
name: Garcia-Ballester, Sara
name: López-Farre, Albert
name: Ruiz-Buera, Leticia
name: Sanz-Iturbe, Maite
name: Álvarez-Villegas, David
name: Jenssen-Paz, Ely C.
name: Puig-Sanz, Guillermo
name: Arcos-Terrones, Aaron
name: Belmonte-Cuenca, Carmen
name: Perelada-Alonso, Elia
name: Blasco-Blasco, Francho
name: Sabaté, Antoni
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 1.
Developmental regulation of alkaline phosphatase in Dictyostelium discoideum
Creators: name: Mohandas, Devaki Velayudhan
Publisher: name: University of British Columbia
Year: 2010

description: The membrane bound alkaline phosphatase activity' in vegetative cells of Dictydstelium discdideum was found to exhibit a 8 to 10 fold increase in specific activity when incubated at 50°C. This activation was reversed on transfer of the preparation to 0°C. Similar activation of the vegetative enzyme was achieved by dialysing the crude membrane preparation, suggesting the removal of a low molecular weight inhibitor. Alkaline phosphatase solubilized from the membranes using Triton X-100 was similarly activated by 50°C treatment or dialysis and the 50°C activation was reversed by incubation at 0°C. Both the dialysed vegetative membrane and the dialysed Triton X-100 extract were inhibited by the addition of concentrated dialysate. This inhibition could be relieved by subsequent dialysis. A 620 fold purified alkaline phosphatase preparation was obtained from crude vegetative membranes by affinity and ion exchange chromatography after solubilization of the enzyme using Triton X-100-5'-nucleotidase activity copurified along with the alkaline phosphatase activity in all the fractionation steps employed. The membrane bound 5'-nucleotidase activity was not activated either by incubation at 50°C or by dialysis and the activity was far less stable than the alkaline phosphatase. However, the Triton X-100 extracted 5'-nucleotidase was activated by dialysis to the same extent as the alkaline phosphatase and both activities in the partially purified preparation were equally inhibited by the dialysates from vegetative membranes. These results suggest that both alkaline phosphatase and 5'-nucleotidase are due to a single protein but the interaction of the two substrates, AMP and pNPP, with the enzyme are different and are markedly influenced by conformational changes induced by the inhibitor. Unlike the vegetative enzyme, the alkaline phosphatase activity in the culminating membrane was not markedly activated by incubation at 50°C or by dialysis. Since the vegetative enzyme was activated by both treatments to levels similar to those found in culminating cells, it was proposed that the developmental increase in alkaline phosphatase in D.discoideum was due to the unmasking of already existing enzyme by the removal of inhibitor. However, the alkaline phosphatase activity of culminating cells differed from that of vegetative cells in chromatography on DEAE-Sephacel and conA-Sepharose and it was less stable in low concentrations of Tris-Cl and in SDS. In contrast, the culminating enzyme was more stable in high concentrations of Tris-Cl. These results suggest that the vegetative enzyme is modified during development. This modification appears to be slight, since the vegetative and culminating enzymes migrate identically in SDS polyacrylamide electrophoretic gels and the enzymes from the two developmental stages were similar in pH optima, in inhibition by phosphate and in inhibition by concentrated dialysate.
Mass segregation in very young open clusters -- A case study of NGC 2244 and NGC 6530
Creators: name: Chen, L.
name: de Grijs, R.
name: Zhao, J. L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We derive the proper motions, membership probabilities, and velocity dispersions of stars in the regions of the young (about 2-4 Myr-old) open clusters NGC 2244 (the central cluster in the Monoceros R2 association) and NGC 6530 (the dominant cluster in the Sgr OB1 association) from photographic plate material obtained at Shanghai Astronomical Observatory, with time baselines of 34 and 87 years, respectively. Both clusters show clear evidence of mass segregation, but they do not exhibit any significant velocity-mass (or, equivalently, a velocity-luminosity) dependence. This provides strong support for the suggestion that the observed mass segregation is -- at least partially -- due to the way in which star formation has proceeded in these complex star-forming regions (``primordial'' mass segregation). Based on arguments related to the clusters' published initial mass functions, in conjunction with our new measurements of their internal velocity dispersions (35 and 8 km/s for NGC 2244 and NGC 6530, respectively), we provide strong arguments in favor of the dissolution of NGC 2244 on very short time-scales, while we speculate that NGC 6530 may be more stable against the effects of internal two-body relaxation. However, this latter object may well be destroyed by the strong tidal field prevalent at its location in the Galactic plane in the direction of the Galactic Center.
description: 36 pages, 10 figures, accepted to AJ