cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Protein bioelectronics: a review of what we do and do not know
Creators: name: Bostick, Christopher D.
name: Mukhopadhyay, Sabyasachi
name: Pecht, Israel
name: Sheves, Mordechai
name: Cahen, David
name: Lederman, David
Publisher: name: arXiv
Year: 2017
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Biomolecules (q-bio.BM)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: We review the status of protein-based molecular electronics. First we discuss fundamental concepts of electron transfer and transport in and across proteins and proposed mechanisms for these processes. We then describe the immobilization of proteins to solid-state surfaces in both nanoscale and macroscopic approaches, and highlight how different methodologies can alter protein electronic properties. Because immobilizing proteins while retaining biological activity is crucial to the successful development of bioelectronic devices, we discuss this process at length. We briefly discuss computational predictions and their link to experimental results. We then summarize how the biological activity of immobilized proteins is beneficial for bioelectronics devices, and how conductance measurements can shed light on protein properties. Finally, we consider how the research to date could influence the development of future bioelectronics devices.
description: 155 pages, 38 figures
Search for new phenomena in a lepton plus high jet multiplicity final state with the ATLAS experiment using $\sqrt{s}$ = 13 Tev proton-proton collision data
Creators: name: ATLAS Collaboration
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A search for new phenomena in final states characterized by high jet multiplicity, an isolated lepton (electron or muon) and either zero or at least three $b$-tagged jets is presented. The search uses 36.1 fb$^{-1}$ of $\sqrt{s}$ = 13 TeV proton-proton collision data collected by the ATLAS experiment at the Large Hadron Collider in 2015 and 2016. The dominant sources of background are estimated using parameterized extrapolations, based on observables at medium jet multiplicity, to predict the $b$-tagged jet multiplicity distribution at the higher jet multiplicities used in the search. No significant excess over the Standard Model expectation is observed and 95% confidence-level limits are extracted constraining four simplified models of $R$-parity-violating supersymmetry that feature either gluino or top-squark pair production. The exclusion limits reach as high as 2.1 TeV in gluino mass and 1.2 TeV in top-squark mass in the models considered. In addition, an upper limit is set on the cross-section for Standard Model $t\bar{t}t\bar{t}$ production of 60 fb (6.5 $\times$ the Standard Model prediction) at 95% confidence level. Finally, model-independent limits are set on the contribution from new phenomena to the signal-region yields.
description: 51 pages in total, author list starting page 35, 10 figures, 5 tables, submitted to JHEP. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/SUSY-2016-11/
Symmetric minimally entangled typical thermal states for canonical and grand-canonical ensembles
Creators: name: Binder, Moritz
name: Barthel, Thomas
Publisher: name: arXiv
Year: 2017
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Based on the density matrix renormalization group (DMRG), strongly correlated quantum many-body systems at finite temperatures can be simulated by sampling over a certain class of pure matrix product states (MPS) called minimally entangled typical thermal states (METTS). When a system features symmetries, these can be utilized to substantially reduce MPS computation costs. It is conceptually straightforward to simulate canonical ensembles using symmetric METTS. In practice, it is important to alternate between different symmetric collapse bases to decrease autocorrelations in the Markov chain of METTS. To this purpose, we introduce symmetric Fourier and Haar-random block bases that are efficiently mixing. We also show how grand-canonical ensembles can be simulated efficiently with symmetric METTS. We demonstrate these approaches for spin-1/2 XXZ chains and discuss how the choice of the collapse bases influences autocorrelations as well as the distribution of measurement values and, hence, convergence speeds.
description: 11 pages, 7 figures; minor improvements, published version
title: The potential role of Posidonia oceanica for mitigating acidification on coastal waters of Europe
Creators: name: Blomenhofer, Maria
Publisher: name: TU Wien
Year: 2023
Subjects: subject: seagrass meadows
subject: posidonia oceanica
subject: ocean acidification
subject: carbon sink
subject: ph-level

description: Ocean acidification is a major environmental concern that has significant ecological., economic,and social implications. The plantation and restoration of seagrass meadows in coastal waters,specifically Posidonia oceanica, is one possible method to combat ocean acidification and has thepotential to have a significant positive impact on the marine environment and the overall state of the biosphere. As there has been a decline of Posidonia oceanica of about 30% in the Mediterranean Sea over the past three decades to about 1.2 mio ha in the Mediterranean Sea, thepositive effects of the sea grass have diminished due to anthropogenic influence. Still, its importance as a carbon sink should not be underestimated. By using recent literature and different studies that have been analysed of the capacity of sea grass to mitigate the impacts of ocean acidification and the effects on the marine ecosystems, supported by several experiments thathave been conducted, this thesis demonstrated the importance of Posidonia oceanica. The experiments showed that seagrass ecosystems have higher pH than ecosystems without seagrass,with a mean difference of 0.43. As the pH is interlocked with the CO2-levels and the oxygenlevels, also experiments on these factors have been conducted. In general, the concentration ofoxygen with P. oceanica present is 2mg/L higher than without. Equally, the CO2 concentration was lower with P. oceanica present. The Posidonia oceanica meadows present in the Mediterranean Sea are able to fixate about 13,3 mio tons of CO2, which is equal to 0,3% of Europeans CO2 emissions. About 2,8 mio tons of CO2 are sequestered by the sea grass, which isabout 0,07% of European CO2 emissions. Furthermore, recent plantation efforts show the successful restoration of seagrass meadows and their overall benefits for the regional environment. Overall, this paper provides valuable insights into the potential role of seagrassmeadows in mitigating ocean acidification and improving marine biosystems while providing specific numbers to support its findings.
The thermodynamic relationship between the RN-AdS black holes and the RN black hole in canonical ensemble
Creators: name: Ma, Yu-Bo
name: Zhang, Li-Chun
name: Liu, Jian
name: Zhao, Ren
name: Cao, Shuo
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper, by analyzing the thermodynamic properties of charged AdS black hole and asymptotically flat space-time charged black hole in the vicinity of the critical point, we establish the correspondence between the thermodynamic parameters of asymptotically flat space-time and nonasymptotically flat space-time, based on the equality of black hole horizon area in the two different space-time. The relationship between the cavity radius (which is introduced in the study of asymptotically flat space-time charged black holes) and the cosmological constant (which is introduced in the study of nonasymptotically flat space-time) is determined. The establishment of the correspondence between the thermodynamics parameters in two different space-time is beneficial to the mutual promotion of different time-space black hole research, which is helpful to understand the thermodynamics and quantumproperties of black hole in space-time.
description: 6 pages,4 figures
Shape Dynamical Loop Gravity from a Conformal Immirzi Parameter
Creators: name: Wong, Patrick J.
Publisher: name: arXiv
Year: 2017
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The Immirzi parameter of loop quantum gravity is a one parameter ambiguity of the theory whose precise interpretation is not universally agreed upon. It is an inherent characteristic of the quantum theory as it appears in the spectra of geometric operators, despite being irrelevant at the classical level. The parameter's appearance in the area and volume spectra to the same power as the Planck area suggest that it plays a role in determining the fundamental length scale of space. In fact, a consistent interpretation is that it represents a constant rescaling of the kinematical spatial geometry. An interesting realization is that promoting the Immirzi parameter to be a general conformal transformation leads to a system which can be identified as analogous to the linking theory of shape dynamics. A three-dimensional gravitational gauge connection is then constructed within the linking theory in a manner analogous to loop quantum gravity, thereby facilitating the application of the established procedure of loop quantization.
description: 17 pages, published version
Dynamics of the conserved net-baryon density near QCD critical point within inhomogeneous quark-gluon plasma profile
Creators: name: Wu, Shanjin
Publisher: name: arXiv
Year: 2024
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: This paper investigates the dynamics of the net-baryon multiplicity fluctuations near the QCD critical point, within the inhomogeneous temperature and baryon chemical potential profile of quark-gluon plasma from the hydrodynamics. The Langevin dynamics of conserved net-baryon density are solved numerically within the temperature and chemical potential profile borrowing from hydrodynamic simulation. It is found that the local systems at different rapidities reach the critical point at different proper times, owing to the inhomogeneous temperature and chemical potential. As a result, it is observed the pronounced enhancement of the magnitude for the net-baryon multiplicity fluctuations with large rapidity acceptance at the freeze-out surface, which is the consequence of the combined effect of critical slowing down and inhomogeneous profile.
description: version accepted by Phys. Rev. C
Interacting atomic quantum fluids on momentum-space lattices
Creators: name: Gadway, Bryce
name: An, Fangzhao Alex
name: Meier, Eric J.
name: Ang'ong'a, Jackson
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the influence of atomic interactions on quantum simulations in momentum-space lattices (MSLs), where driven atomic transitions between discrete momentum states mimic transport between sites of a synthetic lattice. Low energy atomic collisions, which are short ranged in real space, relate to nearly infinite-ranged interactions in momentum space. However, the distinguishability of the discrete momentum states coupled in MSLs gives rise to an added exchange energy between condensate atoms in different momentum orders, relating to an effectively attractive, finite-ranged interaction in momentum space. We explore the types of phenomena that can result from this interaction, including the formation of chiral self-bound states in topological MSLs. We also discuss the prospects for creating squeezed states in momentum-space double wells.
description: 6 pages, 3 figures; This submission is superseded by arXiv:1708.01237 with updated experimental results
The realistic models of relativistic stars in f(R) = R + alpha R^2 gravity
Creators: name: Astashenok, Artyom V.
name: de la Cruz-Dombriz, Alvaro
name: Odintsov, Sergei D.
Publisher: name: arXiv
Year: 2017
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In the context of f(R)=R + alpha R^2 gravity, we study the existence of neutron and quark stars with no intermediate approximations in the generalised system of Tolman-Oppenheimer-Volkov equations. Analysis shows that for positive alpha's the scalar curvature does not drop to zero at the star surface (as in General Relativity) but exponentially decreases with distance. Also the stellar mass bounded by star surface decreases when the value alpha increases. Nonetheless distant observers would observe a gravitational mass due to appearance of a so-called gravitational sphere around the star. The non-zero curvature contribution to the gravitational mass eventually is shown to compensate the stellar mass decrease for growing alpha's. We perform our analysis for several equations of state including purely hadronic configurations as well as hyperons and quark stars. In all cases, we assess that the relation between the parameter $α$ and the gravitational mass weakly depend upon the chosen equation of state. Another interesting feature is the increase of the star radius in comparison to General Relativity for stars with masses close to maximal, whereas for intermediate masses around 1.4-1.6 solar masses, the radius of star depends upon alpha very weakly. Also the decrease in the mass bounded by star surface may cause the surface redshift to decrease in R^2-gravity when compared to Einsteinian predictions. This effect is shown to hardly depend upon the observed gravitational mass. Finally, for negative values of alpha our analysis shows that outside the star the scalar curvature has damped oscillations but the contribution of the gravitational sphere into the gravitational mass increases indefinitely with radial distance putting into question the very existence of such relativistic stars.
description: Version published in Class. Quantum Grav. 34 (2017) 205008, 15 pages, 11 figures, 3 tables, conclusions unchanged
Electronic Structure and Magnetic Properties of Half-metallic Ferrimagnet Mn$_{2}$VAl Probed by Soft X-ray Spectroscopies
Creators: name: Nagai, K.
name: Fujiwara, H.
name: Aratani, H.
name: Fujioka, S.
name: Yomosa, H.
name: Nakatani, Y.
name: Kiss, T.
name: Sekiyama, A.
name: Kuroda, F.
name: Fujii, H.
name: Oguchi, T.
name: Tanaka, A.
name: Miyawaki, J.
name: Harada, Y.
name: Takeda, Y.
name: Saitoh, Y.
name: Suga, S.
name: Umetsu, R. Y.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We have studied the electronic structure of ferrimagnetic Mn2VAl single crystal by means of soft X-ray absorption spectroscopy (XAS), X-ray absorption magnetic circular dichroism (XMCD) and resonant soft X-ray inelastic scattering (RIXS). We have successfully observed the XMCD signals for all constitute elements, supporting the spin polarized states at the Fermi level. The Mn $L_{2,3}$ XAS and XMCD spectra are reproduced by the spectral simulation based on density-functional theory (DFT), indicating itinerant character of the Mn 3d states. On the other hand, V $3d$ electrons are rather localized since the ionic model can qualitatively explain the V $L_{2,3}$ XAS and XMCD spectra as well as the local dd excitation revealed by V $L_3$ RIXS.
description: 9 pages, 9 figures
DiseaseAndDiseaseManagement.jpg
Creators: name: Al Khalaf, Ruba
Publisher: name: figshare
Year: 2023
Subjects: Information modelling, management and ontologies

description: This schema represents the Disease and disease management view of the OntoEffect ontology, which was submitted to the Doctoral Consortium Papers Presented at the 35th International Conference on Advanced Information Systems Engineering (CAiSE 2023).
Graphical description of unitary transformations on hypergraph states
Creators: name: Gachechiladze, Mariami
name: Tsimakuridze, Nikoloz
name: Gühne, Otfried
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Hypergraph states form a family of multiparticle quantum states that generalizes cluster states and graph states. We study the action and graphical representation of nonlocal unitary transformations between hypergraph states. This leads to a generalization of local complementation and graphical rules for various gates, such as the CNOT gate and the Toffoli gate. As an application, we show that already for five qubits local Pauli operations are not sufficient to check local equivalence of hypergraph states. Furthermore, we use our rules to construct entanglement witnesses for three-uniform hypergraph states.
description: 17 pages, 5 figures, v2: final version
title:   EXAMINING THE IMPACT OF DISCRETE AND CONTEXTUAL STRESS FACTORS ON MEMORY
Creators: name: Silva-Jones, Jillian
Publisher: name: University of Kentucky Libraries
Year: 2022
Subjects: subject: FOS: Psychology
valueUri: http://www.oecd.org/science/inno/38235147.pdf

description: Stress is a complex and multifaceted process which is often not perceived as such. Therefore, given the unidimensional conceptualization of stress in previous research the current understanding of the associations between stress and memory are not well understood. This study investigates the association between stress and memory by capturing the complexity of stress through discrete and contextual stress factors. The current study used ecological momentary assessment (EMA) and geocoded indices (i.e., zip codes) of population density (i.e., urbanicity) and deprivation (socioeconomic disadvantage) in a large and diverse sample of U.S. participants (N = 8817) to examine the relationship between markers of daily stress (i.e., detection and intensity) and contextual factors (i.e., urbanicity and deprivation) on a well-established assessment of memory recall. Analyses examined models of cumulative stress reports and event-based stress reports. Results revealed significant main effects and interactions between our discrete and contextual stress factors highlighting that both factors contribute to the relationship between stress and memory. Additionally, examining the cumulative impact of stress across several days on a single memory test revealed to be more effective in assessing the impact of stress on memory compared to examining stress occurring at the same instance of test. Overall, this study provided new evidence in the way stress impacts memory thus suggesting the importance of examining cumulative stress over time and examining contextual factors of stress.
description: © 2022 Jillian Rae Silva-Jones
Intensifying extraction of biomolecules from macroalgae using vortex based hydrodynamic cavitation device
Creators: name: Mittal, Rochak
name: RANADE, VIVEK
Publisher: name: University of Limerick
Year: 2023
Subjects: Engineering

description: Macroalgae have a tremendous potential to become an important renewable resource for valuable biomolecules and chemicals. New and improved ways of cell disruption and of enhancing rate as well as yield of extraction of valuable products from macroalgae are needed to fully realise this potential. In this work, hydrodynamic cavitation (HC) was used for intensifying rate and yield of extraction of phycoerythrin, proteins and carbohydrates from marine macroalgae Palmaria palmata. We use vortex-based HC devices which do not use small restrictions like orifice-based HC devices or moving parts like rotor–stator based HC devices. A bench scale setup with a nominal slurry flow rate of 20 LPM was established. Dried and powdered macroalgae was used. Influence of key operating parameters like pressure drop and number of passes on extraction performance (the rate and yield) was measured. A simple, yet effective model was developed and used for interpreting and describing experimental data. The results indicate that there exists an optimum pressure drop across the device at which extraction performance is maximum. The extraction performance with HC was found to be significantly better than the stirred vessels. HC has resulted in 2 to 20 times improvement in the rate of extraction of phycoerythrin (R-PE), proteins and carbohydrates. Based on the results obtained in this work, pressure drop of 200 kPa and number of passes through the HC devices of about 100 were found to be most effective for HC-assisted intensified extraction from macroalgae. The presented results and model will be useful for harnessing vortex-based HC devices for intensifying the extraction of valuable products from macroalgae.
Time-dependent density-functional theory for strongly interacting electrons
Creators: name: Cort, Luis
name: Karlsson, Daniel
name: Lani, Giovanna
name: van Leeuwen, Robert
Publisher: name: arXiv
Year: 2017
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We consider an analytically solvable model of two interacting electrons that allows for the calculation of the exact exchange-correlation kernel of time-dependent density functional theory. This kernel, as well as the corresponding density response function, is studied in the limit of large repulsive interactions between the electrons and we give analytical results for these quantities as an asymptotic expansion in powers of the square root of the interaction strength. We find that in the strong interaction limit the three leading terms in the expansion of the kernel act instantaneously while memory terms only appear in the next orders. We further derive an alternative expansion for the kernel in the strong interaction limit on the basis of the theory developed in [Phys. Chem. Chem. Phys. 18, 21092 (2016)] using the formalism of strictly correlated electrons in the adiabatic approximation. We find that the first two leading terms in this series, corresponding to the strictly correlated limit and its zero-point vibration correction, coincide with the two leading terms of the exact expansion. We finally analyze the spatial non-locality of these terms and show when the adiabatic approximation breaks down. The ability to reproduce the exact kernel in the strong interaction limit indicates that the adiabatic strictly correlated electron formalism is useful for studying the density response and excitation properties of other systems with strong electronic interactions.
Anisotropic magnetization dynamics in Fe5GeTe2 at room temperature
Creators: name: Bera, Alapan
name: Jana, Nirmalya
name: Agarwal, Amit
name: Mukhopadhyay, Soumik
Publisher: name: arXiv
Year: 2024
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The determination of Lande's g-factor and the damping constant is central to extracting crucial information about the spin-spin and spin-orbit interactions in magnetically ordered systems. In insulating compounds based on 3d elements, the spin-orbit interaction can be effectively probed by investigating the ground state of the corresponding free 3d ion within the crystalline environment. For metallic systems, the problem is non-trivial because of additional band structure effects. Here, we investigate the anisotropic magnetization dynamics in bulk single crystalline Fe5GeTe2, a van der Waals 2D itinerant ferromagnet at room temperature, using broadband ferromagnetic resonance spectroscopy. Strikingly, contrary to the results of ab-initio calculations, we do not observe any intrinsic anisotropy of magnetization damping close to room temperature, suggesting diminished role of spin-orbit interaction. However, there is a sizable anisotropy in the Lande's g factor near room temperature which is attributed to anisotropic critical spin fluctuations.
High precision probe of the fully sequential decay width of the Hoyle state in $^{12}$C
Creators: name: Dell'Aquila, D.
name: Lombardo, I.
name: Verde, G.
name: Vigilante, M.
name: Acosta, L.
name: Agodi, C.
name: Cappuzzello, F.
name: Carbone, D.
name: Cavallaro, M.
name: Cherubini, S.
name: Cvetinovic, A.
name: D'Agata, G.
name: Francalanza, L.
name: Guardo, G. L.
name: Gulino, M.
name: Indelicato, I.
name: La Cognata, M.
name: Lamia, L.
name: Ordine, A.
name: Pizzone, R. G.
name: Puglia, S. M. R.
name: Rapisarda, G. G.
name: Romano, S.
name: Santagati, G.
name: Spartà, R.
name: Spadaccini, G.
name: Spitaleri, C.
name: Tumino, A.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The decay path of the Hoyle state in $^{12}$C ($E_x=7.654\textrm{MeV}$) has been studied with the $^{14}\textrm{N}(\textrm{d},α_2)^{12}\textrm{C}(7.654)$ reaction induced at $10.5\textrm{MeV}$. High resolution invariant mass spectroscopy techniques have allowed to unambiguously disentangle direct and sequential decays of the state passing through the ground state of $^{8}$Be. Thanks to the almost total absence of background and the attained resolution, a fully sequential decay contribution to the width of the state has been observed. The direct decay width is negligible, with an upper limit of $0.043\%$ ($95\%$ C.L.). The precision of this result is about a factor $5$ higher than previous studies. This has significant implications on nuclear structure, as it provides constraints to $3$-$α$ cluster model calculations, where higher precision limits are needed.
Meromorphic Flux Compactification
Creators: name: Damian, Cesar
name: Loaiza-Brito, Oscar
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We present exact solutions of four-dimensional Einstein's equations related to Minkoswki vacuum constructed from Type IIB string theory with non-trivial fluxes. Following recent works, we study a non-trivial flux compactification on a fibered product by a four-dimensional torus and a two-dimensional sphere punctured by 5- and 7-branes. By considering only 3-form fluxes and the dilaton, as functions on the internal sphere coordinates, we show that these solutions correspond to a family of supersymmetric solutions constructed by the use of G-theory. Meromorphicity on functions constructed in terms of fluxes and warping factors guarantees that flux and 5-brane contributions to the scalar curvature vanish while fulfilling stringent constraints as tadpole cancellation and Bianchi identities. Different Einstein's solutions are shown to be related by U-dualities. We present three supersymmetric non-trivial Minkowski vacuum solutions and compute the corresponding soft terms. We also construct a non-supersymmetric solution and study its stability.
description: 33 pages, 1 figure. v2: References added. v3: Some clarifications added, index notation refined, minor changes. Accepted for publication in JHEP
Ore's theorem on cyclic subfactor planar algebras and beyond
Creators: name: Palcoux, Sebastien
Publisher: name: arXiv
Year: 2017
Subjects: subject: Operator Algebras (math.OA)
subject: Combinatorics (math.CO)
subject: Group Theory (math.GR)
subject: Quantum Algebra (math.QA)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 46L37 (Primary), 06D10, 20C15, 05E15, 05E10 (Secondary)

description: Ore proved that a finite group is cyclic if and only if its subgroup lattice is distributive. Now, since every subgroup of a cyclic group is normal, we call a subfactor planar algebra cyclic if all its biprojections are normal and form a distributive lattice. The main result generalizes one side of Ore's theorem and shows that a cyclic subfactor is singly generated in the sense that there is a minimal 2-box projection generating the identity biprojection. We conjecture that this result holds without assuming the biprojections to be normal, and we show that it is true for small lattices. We finally exhibit a dual version of another theorem of Ore and a non-trivial upper bound for the minimal number of irreducible components for a faithful complex representation of a finite group.
description: 20 pages (it is a short version of arXiv:1505.06649). To appear in Pacific J. Math
Gravitational convergence, shear deformation and rotation of magnetic forcelines
Creators: name: Giantsos, Vangelis
name: Tsagas, Christos G.
Publisher: name: arXiv
Year: 2017
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider the "kinematics" of spacelike congruences and apply them to a family of self-gravitating magnetic forcelines. Our aim is to investigate the convergence and the possible focusing of these lines, as well as their rotation and shear deformation. In so going, we introduce a covariant 1+2 splitting of the 3-dimensional space, parallel and orthogonal to the direction of the field lines. The convergence, or the divergence, of the latter is monitored by the associated Raychaudhuri equation, which is obtained by propagating the spatial divergence of a unitary spacelike vector along its own direction. Applied to a magnetic vector, the resulting expression shows that, although the convergence of the magnetic forcelines is affected by the gravitational pull of all the other sources, it is unaffected by the field's own gravity, irrespective of how strong the latter is. This rather counterintuitive result is entirely due to the magnetic tension, namely to the negative pressure the field exerts parallel to its lines of force. In particular, the magnetic tension always cancels out the field's energy-density input to the Raychaudhuri equation, leaving the latter free of any direct magnetic-energy contribution. Similarly, the rotation and the shear deformation of the aforementioned forcelines are also unaffected by the magnetic input to the total gravitational energy. In a sense, the magnetic lines do not seem to "feel" their own gravity no matter how strong the latter may be.
description: Typos corrected. Published version
A Successive Constraint Approach to Solving Parameter-Dependent Linear Matrix Inequalities
Creators: name: O'Connor, Robert
Publisher: name: arXiv
Year: 2017
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65K05, 90C22, 93D99, 90C90

description: We present a successive constraint approach that makes it possible to cheaply solve large-scale linear matrix inequalities for a large number of parameter values. The efficiency of our method is made possible by an offline/online decomposition of the workload. Expensive computations are performed beforehand, in the offline stage, so that the problem can be solved very cheaply in the online stage. We also extend the method to approximate solutions to semidefinite programming problems.
description: 6 pages, 5 figures
Responses in Large-Scale Structure
Creators: name: Barreira, Alexandre
name: Schmidt, Fabian
Publisher: name: arXiv
Year: 2017
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We introduce a rigorous definition of general power-spectrum responses as resummed vertices with two hard and $n$ soft momenta in cosmological perturbation theory. These responses measure the impact of long-wavelength perturbations on the local small-scale power spectrum. The kinematic structure of the responses (i.e., their angular dependence) can be decomposed unambiguously through a "bias" expansion of the local power spectrum, with a fixed number of physical response coefficients, which are only a function of the hard wavenumber $k$. Further, the responses up to $n$-th order completely describe the $(n+2)$-point function in the squeezed limit, i.e. with two hard and $n$ soft modes, which one can use to derive the response coefficients. This generalizes previous results, which relate the angle-averaged squeezed limit to isotropic response coefficients. We derive the complete expression of first- and second-order responses at leading order in perturbation theory, and present extrapolations to nonlinear scales based on simulation measurements of the isotropic response coefficients. As an application, we use these results to predict the non-Gaussian part of the angle-averaged matter power spectrum covariance ${\rm Cov}^{\rm NG}_{\ell = 0}(k_1,k_2)$, in the limit where one of the modes, say $k_2$, is much smaller than the other. Without any free parameters, our model results are in very good agreement with simulations for $k_2 \lesssim 0.06\ h/{\rm Mpc}$, and for any $k_1 \gtrsim 2 k_2$. The well-defined kinematic structure of the power spectrum response also permits a quick evaluation of the angular dependence of the covariance matrix. While we focus on the matter density field, the formalism presented here can be generalized to generic tracers such as galaxies.
description: 28 pages + appendices and references. 5 figures. Comments welcomed
Discovering Reliable Approximate Functional Dependencies
Creators: name: Mandros, Panagiotis
name: Boley, Mario
name: Vreeken, Jilles
Publisher: name: arXiv
Year: 2017
Subjects: subject: Databases (cs.DB)
subject: Artificial Intelligence (cs.AI)
subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences
subject: H.2.8; G.3

description: Given a database and a target attribute of interest, how can we tell whether there exists a functional, or approximately functional dependence of the target on any set of other attributes in the data? How can we reliably, without bias to sample size or dimensionality, measure the strength of such a dependence? And, how can we efficiently discover the optimal or $α$-approximate top-$k$ dependencies? These are exactly the questions we answer in this paper. As we want to be agnostic on the form of the dependence, we adopt an information-theoretic approach, and construct a reliable, bias correcting score that can be efficiently computed. Moreover, we give an effective optimistic estimator of this score, by which for the first time we can mine the approximate functional dependencies from data with guarantees of optimality. Empirical evaluation shows that the derived score achieves a good bias for variance trade-off, can be used within an efficient discovery algorithm, and indeed discovers meaningful dependencies. Most important, it remains reliable in the face of data sparsity.
description: Accepted: In Proceedings of the ACM SIGKDD Conference on Knowledge Discovery and Data Mining (KDD), August 13-17, 2017, Halifax, NS, Canada
The geometry of characters of Hopf algebras
Creators: name: Bogfjellmo, Geir
name: Schmeding, Alexander
Publisher: name: arXiv
Year: 2017
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 22E65 (primary), 16T05, 43A40, 58B25 (Secondary)

description: Character groups of Hopf algebras appear in a variety of mathematical contexts such as non-commutative geometry, renormalisation of quantum field theory, numerical analysis and the theory of regularity structures for stochastic partial differential equations. In these applications, several species of "series expansions" can then be described as characters from a Hopf algebra to a commutative algebra. Examples include ordinary Taylor series, B-series, Chen-Fliess series from control theory and rough paths. In this note we explain and review the constructions for Lie group and topological structures for character groups. The main novel result of the present article is a Lie group structure for characters of graded and not necessarily connected Hopf algebras (under the assumption that the degree zero subalgebra is finite-dimensional). Further, we establish regularity (in the sense of Milnor) for these Lie groups.
description: 25 pages, notes for the Abelsymposium 2016: "Computation and Combinatorics in Dynamics, Stochastics and Control", v4: corrected typos and mistakes, main results remains valid, updated references
title: Mathematical modeling to investigate dual pathway inhibition by anticoagulant and antiplatelet drugs
Creators: name: Tubbs, Azlan M.
Publisher: name: Colorado School of Mines Repository
Year: 2022

description: The purpose of blood coagulation is to halt blood flow from a damaged vessel for the vessel to heal and repair. Blood coagulation occurs as overlapping enzymatic events, which are strongly regulated by platelet surfaces. Coagulation begins when the wall of the blood vessel is injured and ends when aggregated platelets seal the injury. Dual pathway inhibition, in which both antiplatelet and anticoagulant drugs are used in combination, promises therapies for reducing risks of harmful clot development that may lead to coronary and cerebrovascular ischemia. Although information exists concerning the effectiveness and success of dual pathway inhibition therapies, the mechanism remains ambiguous due to a lack of ability to observe detailed biochemical interactions during the dynamic clotting process. Mathematical modeling allows for efficient simulations of the clotting process and provides access to the dynamic concentrations of all proteins, cells, and interactions within the system under the influence of flow. This project builds on a mechanistic mathematical model of flow-mediated coagulation and platelet deposition. A combination of the antiplatelet aspirin and the anticoagulant rivaroxaban is considered in the model, and the clotting process is simulated for various concentrations of drugs and injury types.
title:   LATENT CLASSES OF SYMPTOM TRAJECTORY IN A BRIEF TREATMENT FOR BORDERLINE PERSONALITY DISORDER
Creators: name: Terrill, Douglas
Publisher: name: University of Kentucky Libraries
Year: 2022
Subjects: subject: FOS: Psychology
valueUri: http://www.oecd.org/science/inno/38235147.pdf

description: It is likely that patients with BPD progress through treatment in different ways. Characterizing symptom trajectories during treatment can facilitate the identification of distinct treatment responses, which may be shared by subgroups of patients. Researchers have consistently identified multiple distinct symptom trajectories among individuals with common psychopathological conditions, but no research to date has attempted to do so among patients with BPD. This study used latent growth mixture modeling to identify and characterize distinct classes of symptom trajectories among patients receiving an 18-week cognitive-behavioral treatment for BPD. Two distinct BPD symptom trajectories were identified in this sample, which were primarily separated by symptom severity throughout treatment. Patients with BPD symptoms severity above a certain threshold at baseline therefore may not be suitable candidates for brief treatment. In addition, non-responders reported significantly higher severity in concurrent mood disorder symptoms, greater functional impairment, lower conscientiousness, and higher neuroticism. At outcome, non-responders had significantly lower agreeableness. Identifying symptom trajectories in this population may be useful in detecting patient deviation from anticipated progress, and personalizing treatment plans. In addition, determining baseline factors associated with certain trajectories may improve clinicians’ ability to assign patients to optimal treatment protocols.
description: © 2022 Doug Terrill
Role of transcriptional bursts in cellular oscillations
Creators: name: Almeira, Nahuel
name: Gusman, Sebastian Risau
Publisher: name: arXiv
Year: 2017
Subjects: subject: Molecular Networks (q-bio.MN)
subject: FOS: Biological sciences

description: Genetic oscillators are present in the cells of many organisms and control several biological processes. The common feature of such oscillators is the presence of a protein which represses the transcription of its own gene. Recently, it has been shown that for many genes transcription is not a continuous process, but that it proceeds in bursts. We study here the relationship between bursty transcription and the robustness of protein oscillations. We concentrate on the temporal profile of mRNA production by studying regimes where this profile changes but the amount of mRNA produced is kept fixed. For systems with different degrees of cooperativity we show that in general bursts are associated with more robust oscillations, but when they are too short and intense they can have the opposite effect. In other words, we show that, in terms of the regularity of the oscillations generated, there is an optimal value for the intensity of the bursts.
description: 22 pages, 9 figures, 2 tables
Inflationary Perturbations in No-Scale Theories
Creators: name: Salvio, Alberto
Publisher: name: arXiv
Year: 2017
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the inflationary perturbations in general (classically) scale-invariant theories. Such scenario is motivated by the hierarchy problem and provides natural inflationary potentials and dark matter candidates. We analyse in detail all sectors (the scalar, vector and tensor perturbations) giving general formulae for the potentially observable power spectra, as well as for the curvature spectral index $n_s$ and the tensor-to-scalar ratio $r$. We show that the conserved Hamiltonian for all perturbations does not feature negative energies even in the presence of the Weyl-squared term if the appropriate quantization is performed and argue that this term does not lead to phenomenological problems at least in some relevant setups. The general formulae are then applied to a concrete no-scale model, which includes the higgs and a scalar, "the planckion", whose vacuum expectation value generates the Planck mass. Inflation can be triggered by a combination of the planckion and the Starobinsky scalar and we show that no tension with observations is present even in the case of pure planckion-inflation, if the coefficient of the Weyl-squared term is large enough. In general, even quadratic inflation is allowed in this case. Moreover, the Weyl-squared term leads to an isocurvature mode, which currently satisfies the observational bounds, but may be detectable with future experiments.
description: 38 pages, 3 figures; v2: references added, published in EPJC
Replacement of fish meal by Lucilia sericata (Meigen, 1826) live larvae and powdered meal in production of stinging catfish Heteropneustes fossilis (Bloch, 1794) post-larvae
Creators: name: Al-Asif, Abdulla-
name: Hamli, Hadi
Publisher: name: figshare
Year: 2022
Subjects: Animal growth and development
Animal nutrition
Animal production not elsewhere classified
Environmental studies in animal production
Aquaculture
Fisheries sciences not elsewhere classified
Food chemistry and food sensory science
Food sciences not elsewhere classified
Food technology

description: Reduction of aquaculture operations and production cost is key to the success and profitability of this enterprise, while protein needs, especially the cost of fish meal, are cery expensive. The current study was conducted to investigate the post-larval production performance of Heteropneustes fossilis using Lucilia sericata maggot as a fish meal replacer in two ways, namely, live larvae and powder form. A 28 days growth trial was performed where five isonitrogenous diets for Heteropneustes fossilis post-larvae were experimented using live maggots and maggot meal, respectively. The proximate composition of each formulated diet, growth parameters of fish post-larvae, such as, weight gain, specific growth rate, protein efficiency ratio, apparent protein utilization, survival rate and the food conversion ratio were examined. After the experiment, the carcass composition of the experimental fishes were evaluated. The best final weight (1.61 g), weight gain (1.418 g), percentage of weight gain (739±1.18%), specific growth rate (2.63), protein efficiency ratio (2.29), apparent protein utilization (85%), survival rate (90%) and lower food conversion ratio (2.06) were observed in fish fed with 75% maggot meal as a substitute of fish meal. This study will help the aquaculture industry, especially the catfish culture in identifying an alternate source of protein and lowering the cost of aquaculture operation.
Numerical evidence for bound secrecy from two-way post-processing in quantum key distribution
Creators: name: Khatri, Sumeet
name: Lütkenhaus, Norbert
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Bound secret information is classical information that contains secrecy but from which secrecy cannot be extracted. The existence of bound secrecy has been conjectured but is currently unproven, and in this work we provide analytical and numerical evidence for its existence. Specifically, we consider two-way post-processing protocols in prepare-and-measure quantum key distribution based on the well-known six-state signal states. In terms of the quantum bit-error rate $Q$ of the classical data, such protocols currently exist for $Q
description: 11 pages, 3 figures. Minor changes to match published version
A conjectural extension of Hecke's converse theorem
Creators: name: Bettin, Sandro
name: Bober, Jonathan W.
name: Booker, Andrew R.
name: Conrey, Brian
name: Lee, Min
name: Molteni, Giuseppe
name: Oliver, Thomas
name: Platt, David J.
name: Steiner, Raphael S.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: We formulate a precise conjecture that, if true, extends the converse theorem of Hecke without requiring hypotheses on twists by Dirichlet characters or an Euler product. The main idea is to linearize the Euler product, replacing it by twists by Ramanujan sums. We provide evidence for the conjecture, including proofs of some special cases and under various additional hypotheses.
description: 21 pages, to appear in The Ramanujan Journal