cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A Residual Based Sparse Approximate Inverse Preconditioning Procedure for Large Sparse Linear Systems
Creators: name: Jia, Zhongxiao
name: Kang, Wenjie
Publisher: name: arXiv
Year: 2015
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65F10

description: The SPAI algorithm, a sparse approximate inverse preconditioning technique for large sparse linear systems, proposed by Grote and Huckle [SIAM J. Sci. Comput., 18 (1997), pp.~838--853.], is based on the F-norm minimization and computes a sparse approximate inverse $M$ of a large sparse matrix $A$ adaptively. However, SPAI may be costly to seek the most profitable indices at each loop and $M$ may be ineffective for preconditioning. In this paper, we propose a residual based sparse approximate inverse preconditioning procedure (RSAI), which, unlike SPAI, is based on only the {\em dominant} rather than all information on the current residual and augments sparsity patterns adaptively during the loops. RSAI is less costly to seek indices and is more effective to capture a good approximate sparsity pattern of $A^{-1}$ than SPAI. To control the sparsity of $M$ and reduce computational cost, we develop a practical RSAI($tol$) algorithm that drops small nonzero entries adaptively during the process. Numerical experiments are reported to demonstrate that RSAI($tol$) is at least competitive with SPAI and can be considerably more efficient and effective than SPAI. They also indicate that RSAI($tol$) is comparable to the PSAI($tol$) algorithm proposed by one of the authors in 2009.
description: 18 pages, 1 figure
Dynamics of the stratification process in drying colloidal dispersions studied by terahertz time-domain spectroscopy
Creators: name: van Mechelen, J. L. M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Chemical Physics (physics.chem-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We present an optical study that reveals the bulk dynamics of the stratification process in drying colloidal dispersions. Terahertz time-domain spectroscopy has been used to measure in situ solventborne and waterborne paint layers as a function of drying time. The dynamic behavior of the dry top layer and wet bottom layer thickness, as well as the bulk thickness, reflect the principal processes of the established drying mechanism. In addition, the results demonstrate stratification only when the drying process is in the evaporation controlled regime, whereas the coating is shown to remain a single layer for diffusion controlled drying.
description: 8 pages, 4 figures
Ongoing growth of the brightest cluster galaxies via major dry mergers in the last ~6 Gyr
Creators: name: Liu, F. S.
name: Lei, F. J.
name: Meng, X. M.
name: Jiang, D. F.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Brightest Cluster Galaxies (BCGs) might have been assembled relatively late (z<1) via mergers. By exploiting the high-resolution HST/ACS imaging, we find four BCGs (COSMOS-P 125516, 102810, 036694 and 089357) in major dry merging in 29 X-ray clusters at $0.3 \le z \le 0.6$ in the Cosmological Evolutionary Survey (COSMOS). These BCGs show prominent but quiescent double nuclei with a magnitude difference of $δm<1.5$ and a projected separation of $r_p
description: 8 pages, 4 figures and 1 table, accepted for publication in MNRAS
New methodology to determine the terminal height of a fireball
Creators: name: Moreno-Ibáñez, Manuel
name: Gritsevich, Maria
name: Trigo-Rodríguez, Josep M.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Despite ablation and drag processes associated with atmospheric entry of meteoroids were a subject of intensive study over the last century, little attention was devoted to interpret the observed fireball terminal height. This is a key parameter because it not only depends on the initial mass, but also on the bulk physical properties of the meteoroids and hence of their ability to ablate in the atmosphere. In this work we have developed a new approach that is tested using the fireball terminal heights observed by the Meteorite Observation and Recovery Project operated in Canada between 1970-1985 (hereafter referred as MORP). We then compare them to the calculation made. Our results clearly show that the new methodology is able to forecast the degree of deepening of meteoroids in the Earth's atmosphere. Then, this approach has important applications in predicting the impact hazard from cm- to meter-sized bodies that are represented, in part, in the MORP bolide list.
description: 26 pages, 5 figures, 1 table
Case studies on the unintended consequences of viral fundraising
Creators: name: Samikshya Pandey
name: Amland, Brendan
name: Badshah, Akhtar
name: START Center
Publisher: name: Gates Open Research
Year: 2023

description: The START team conducted a case study analysis of the five major viral fundraising campaigns held in recent years as a part of a research on "Unintended consequences of viral fundraising". Following the general overview of these campaigns, each study investigated the cause behind this virality and its impact on the non-profit recipients. Following the case study analysis, the team also described the common factors behind the viral fundraising campaigns and its overall impact on non-profit sector. With landscape review and expert interviews, the team also presented recommendations and opportunities to the foundation about ways to increase philanthropic giving.
Spectroscopic performance of flight-like DEPFET sensors for Athena's WFI
Creators: name: Müller-Seidlitz, Johannes
name: Andritschke, Robert
name: Bonholzer, Michael
name: Emberger, Valentin
name: Hauser, Günter
name: Herrmann, Maximilian
name: Lechner, Peter
name: Mayr, Astrid
name: Oser, Julian
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The Wide Field Imager for the Athena X-ray telescope is composed of two back side illuminated detectors using DEPFET sensors operated in rolling shutter readout mode: A large detector array featuring four sensors with 512x512 pixels each and a small detector that facilitates the high count rate capability of the WFI for the investigation of bright, point-like sources. Both sensors were fabricated in full size featuring the pixel layout, fabrication technology and readout mode chosen in a preceding prototyping phase. We present the spectroscopic performance of these flight-like detectors for different photon energies in the relevant part of the targeted energy range from 0.2 keV to 15 keV with respect to the timing requirements of the instrument. For 5.9 keV photons generated by an iron-55 source the spectral performance expressed as Full Width at Half Maximum of the emission peak in the spectrum is 126.0 eV for the Large Detector and 129.1 eV for the Fast Detector. A preliminary analysis of the camera's signal chain also allows for a first prediction of the performance in space at the end of the nominal operation phase.
description: SPIE Space Telescopes and Instrumentation 2022: Ultraviolet to Gamma Ray
Interferon to prevent respiratory illness epidemics
Creators: name: Mesic, Aldina
name: Emahlea Jackson
name: Lalika, Mathias
name: Patel, Rena
name: START Center
Publisher: name: Gates Open Research
Year: 2023

description: Given the potential role Interferon (IFN)-based agents may play in the mitigation of future viral respiratory epidemics, the START team's overall goal was to conduct a scoping review to summarize the literature on IFN or IFN-stimulating agents, such as Toll like receptor agonists (TLR), on primarily viral respiratory infections to understand their role in preventing future human epidemics. This review was conducted to systematically map the existing literature on comparative efficacy and tolerability of IFN-based agents in humans in which IFN or TLR-agonist-based agents may play a critical role in enhancing the host antiviral response, reducing viral shedding, and preventing severe disease—and thus the need for hospitalization—in patients with an early viral respiratory illness.
Finite-population evolution with rare mutations in asymmetric games
Creators: name: Veller, Carl
name: Hayward, Laura K.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Biological sciences

description: We model evolution according to an asymmetric game as occurring in multiple finite populations, one for each role in the game, and study the effect of subjecting individuals to stochastic strategy mutations. We show that, when these mutations occur sufficiently infrequently, the dynamics over all population states simplify to an ergodic Markov chain over just the pure population states (where each population is monomorphic). This makes calculation of the stationary distribution computationally feasible. The transition probabilities of this embedded Markov chain involve fixation probabilities of mutants in single populations. The asymmetry of the underlying game leads to fixation probabilities that are derived from frequency-independent selection, in contrast to the analogous single-population symmetric-game case (Fudenberg and Imhof 2006). This frequency independence is useful in that it allows us to employ results from the population genetics literature to calculate the stationary distribution of the evolutionary process, giving sharper, and sometimes even analytic, results. We demonstrate the utility of this approach by applying it to a battle-of-the-sexes game, a Crawford-Sobel signalling game, and the beer-quiche game of Cho and Kreps (1987).
description: Journal of Economic Theory (2015)
IoT_MUD_IFIP_NOMS.pdf
Creators: name: Kothapalli, Hemanth
Publisher: name: figshare
Year: 2023
Subjects: System and network security
Data security and protection

description: IoT-based intrusions and network attacks are becoming ever more concerning. As a mitigatory measure, the IETF standardized Manufacturer Usage Description (MUD) which allows IoT device vendors to specify the legitimate communication patterns (as a MUD profile) of an IoT device. A MUD profile allows the validation of the actual communication pattern of an IoT device with the intended behavior at runtime. However, as the number of IoT devices increases, validation at runtime has scalability challenges regarding the number of switch resources (e.g., TCAM) required to maintain MUD profiles. In this work, we propose a scalable data plane primitive and a system on top of the primitive, which together enforce MUD profiles of thousands of IoT devices in a P4 programmable switch data plane. Our main idea is to avoid inefficiencies because of the repetition of header values while representing MUD profilebased ACL rules. Further, we exploit the characteristics of header values in ACL rules of real IoT devices and carefully partition the rules across multiple hash-based exact match-action tables in the switch data plane. Since hash-based data structures can be implemented using SRAM which is cheap and abundantly available (order of MBs) in commodity programmable switches, our approach scales well for a large IoT network.
When costly migration helps to improve cooperation
Creators: name: Lee, Hsuan-Wei
name: Cleveland, Colin
name: Szolnoki, Attila
Publisher: name: arXiv
Year: 2022
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Computer Science and Game Theory (cs.GT)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Motion is a typical reaction among animals and humans trying to reach better conditions in a changing world. This aspect has been studied intensively in social dilemmas where competing players' individual and collective interests are in conflict. Starting from the traditional public goods game model, where players are locally fixed and unconditional cooperators or defectors are present, we introduce two additional strategies through which agents can change their positions of dependence on the local cooperation level. More importantly, these so-called sophisticated players should bear an extra cost to maintain their permanent capacity to evaluate their neighborhood and react accordingly. Hence, four strategies compete, and the most successful one can be imitated by its neighbors. Crucially, the introduction of costly movement has a highly biased consequence on the competing main strategies. In the majority of parameter space, it is harmful to defectors and provides a significantly higher cooperation level when the population is rare. At an intermediate population density, which would be otherwise optimal for a system of immobile players, the presence of mobile actors could be detrimental if the interaction pattern changes slightly, thereby blocking the optimal percolation of information flow. In this parameter space, sophisticated cooperators can also show the co-called Moor effect by first avoiding the harmful vicinity of defectors; they subsequentially transform into an immobile cooperator state. Hence, paradoxically, the additional cost of movement could be advantageous to reach a higher general income, especially for a rare population when subgroups would be isolated otherwise.
description: 8 two-column pages, 7 figures, published in Chaos: An Interdisciplinary Journal of Nonlinear Science, 32(9), 093103 (2022)
title: Two concurrently occurring rare anatomic variants of the accessory hemiazygos vein
Creators: name: Satei, Alexander M.
Publisher: name: EURORAD
Year: 2022
Subjects: subject: Cardiovascular
subject: Anatomy
subject: Vascular
subject: Veins / Vena cava
subject: CT-Angiography
subject: Clinical Cases

description: Clinical History: A 36-year-old female presented to the emergency department with intermittent chest pain for three weeks. She endorsed worsening shortness of breath and chest tightness on the day of admission. Initial laboratory investigations revealed an elevated D-dimer, prompting CT angiography (CTA) of the chest to rule out pulmonary embolism.

description: 36 years, female
Simons Observatory Focal-Plane Module: Detector Re-biasing With Bias-step Measurements
Creators: name: Wang, Yuhan
name: Bhandarkar, Tanay
name: Choi, Steve K.
name: Crowley, Kevin T.
name: Duff, Shannon M.
name: Dutcher, Daniel
name: Groh, John
name: Harrington, Kathleen
name: Healy, Erin
name: Johnson, Bradley
name: Lashner, Jack
name: Li, Yaqiong
name: Silva-Feaver, Max
name: Sonka, Rita
name: Staggs, Suzanne T.
name: Walker, Samantha
name: Zheng, Kaiwen
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The Simons Observatory is a ground-based cosmic microwave background survey experiment that consists of three 0.5 m small-aperture telescopes and one 6 m large-aperture telescope, sited at an elevation of 5200 m in the Atacama Desert in Chile. SO will deploy 60,000 transition-edge sensor (TES) bolometers in 49 separate focal-plane modules across a suite of four telescopes covering 30/40 GHz low frequency (LF), 90/150 GHz mid frequency (MF), and 220/280 GHz ultra-high frequency (UHF). Each MF and UHF focal-plane module packages 1720 optical detectors spreading across 12 detector bias lines that provide voltage biasing to the detectors. During observation, detectors are subject to varying atmospheric emission and hence need to be re-biased accordingly. The re-biasing process includes measuring the detector properties such as the TES resistance and responsivity in a fast manner. Based on the result, detectors within one bias line then are biased with suitable voltage. Here we describe a technique for re-biasing detectors in the modules using the result from bias-step measurement.
Phase transitions in Core-Collapse Supernova Matter at sub-saturation densities
Creators: name: Pais, Helena
name: Newton, William G.
name: Stone, Jirina R.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We perform a three-dimensional, finite temperature Skyrme-Hartree-Fock study of inhomogeneous nuclear matter to determine the critical density and temperature for the phase transition between the pasta phase and homogeneous matter and its properties. We employ four different parametrizations of the Skyrme nuclear energy-density functional, SkM$^*$, SLy4, NRAPR and SQMC700, which span a range of saturation-density symmetry energy behaviours constrained by a variety of nuclear experimental probes. For each of these interactions we calculate free energy, pressure, entropy and chemical potentials in the range of particle number densities where the nuclear pasta phases are expected to exist, 0.02 - 0.12 fm$^{-3}$, temperatures 2 - 8 MeV and a proton fraction of 0.3. We find unambiguous evidence for a first-order phase transition to uniform matter, unsoftened by the presence of the pasta phases. No conclusive signs of first-order phase transition between the pasta phases is observed, and it is argued that the thermodynamic quantities vary continuously right up to the first-order phase transition to uniform matter. We compare our results with thermodynamic spinodals calculated using the same Skyrme parameterizations, finding that the effect of short-range Coulomb correlations and quantum shell effects included in our model leads to the pasta phases existing at densities up to 0.1 fm$^{-3}$ above the spinodal boundaries, thus increasing the transition density to uniform matter by the same amount. The transition density is otherwise shown to be insensitive to the symmetry energy at saturation density within the range constrained by the concordance of a variety of experimental constraints, and can be taken to be a well-determined quantity.
description: 10 pages, 7 figures, submitted to Phys Rev C
Kinetic theory of particle-in-cell simulation plasma and the ensemble averaging technique
Creators: name: Touati, Michael
name: Codur, Romain
name: Tsung, Frank
name: Decyk, Viktor K
name: Mori, Warren B
name: Silva, Luis O
Publisher: name: arXiv
Year: 2022
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We derive the kinetic theory of fluctuations in physically and numerically stable particle-in-cell (PIC) simulations of electrostatic plasmas. The starting point is the single-time correlations at the simulation start between the statistical fluctuations of weighted densities of macroparticle centers in the plasma particle phase-space. The single-time correlations at all time steps and in each spatial grid cell are then determined from the Laplace-Fourier transforms of the discretized Klimontovich-like equation for the macroparticles and Maxwell's equations for the fields as computed by modern PIC codes. We recover the expressions for the electrostatic field and the plasma particle density fluctuation autocorrelations spectra as well as the kinetic equations describing the average evolution of PIC-simulated plasma particles, first derived by Langdon in 1970, using a macroparticle test approach perturbing a discretized Vlasovian plasma and then averaging the obtained physical quantity over the initial macroparticle velocity distribution. We generalize and extend these results to the modern algorithms in PIC codes and using arbitrary macroparticle weights. Analytical estimates of statistical fluctuations single-time correlation amplitudes are derived as a function of the plasma simulation parameters, using the central limit theorem in the limit of a large number of macroparticles per cell. The theory is then used to analyze the ensemble averaging technique of PIC simulations where statistical averages are performed over ensembles of PIC simulations, modeling the same plasma physics problem but using different statistical realizations of the initial distribution functions of the macroparticles.
description: 38 pages, 11 figures
Magnetic field properties in star formation: a review of their analysis methods and interpretation
Creators: name: Liu, Junhao
name: Zhang, Qizhou
name: Qiu, Keping
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Linearly polarized emission from dust grains and molecular spectroscopy is an effective probe of the magnetic field topology in the interstellar medium and molecular clouds. The longstanding Davis-Chandrasekhar-Fermi (DCF) method and the recently developed Histogram of Relative Orientations (HRO) analysis and the polarization-intensity gradient (KTH) method are widely used to assess the dynamic role of magnetic fields in star formation based on the plane-of-sky component of field orientations inferred from the observations. We review the advances and limitations of these methods and summarize their applications to observations. Numerical tests of the DCF method, including its various variants, indicate that its largest uncertainty may come from the assumption of energy equipartition, which should be further calibrated with simulations and observations. We suggest that the ordered and turbulent magnetic fields of particular observations are local properties of the considered region. An analysis of the polarization observations using DCF estimations suggests that magnetically trans-to-super-critical and averagely trans-to-super-Alfvénic clumps/cores form in sub-critical clouds. High-mass star-forming regions may be more gravity-dominant than their low-mass counterparts due to higher column density. The observational HRO studies clearly reveal that the preferential relative orientation between the magnetic field and density structures changes from parallel to perpendicular with increasing column densities, which, in conjunction with simulations, suggests that star formation is ongoing in trans-to-sub-Alfvénic clouds. There is a possible transition back from perpendicular to random alignment at higher column densities. Results from observational studies using the KTH method broadly agree with those of the HRO and DCF studies.
description: 43 pages, 5 figures, 4 tables. Published in Frontiers in Astronomy and Space Sciences: Multi-scale Magnetic Field Measurements in the Multi-Phase Interstellar Medium
Adaptive Joint Optimization for 3D Reconstruction with Differentiable Rendering
Creators: name: Zhang, Jingbo
name: Wan, Ziyu
name: Liao, Jing
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Due to inevitable noises introduced during scanning and quantization, 3D reconstruction via RGB-D sensors suffers from errors both in geometry and texture, leading to artifacts such as camera drifting, mesh distortion, texture ghosting, and blurriness. Given an imperfect reconstructed 3D model, most previous methods have focused on the refinement of either geometry, texture, or camera pose. Or different optimization schemes and objectives for optimizing each component have been used in previous joint optimization methods, forming a complicated system. In this paper, we propose a novel optimization approach based on differentiable rendering, which integrates the optimization of camera pose, geometry, and texture into a unified framework by enforcing consistency between the rendered results and the corresponding RGB-D inputs. Based on the unified framework, we introduce a joint optimization approach to fully exploit the inter-relationships between geometry, texture, and camera pose, and describe an adaptive interleaving strategy to improve optimization stability and efficiency. Using differentiable rendering, an image-level adversarial loss is applied to further improve the 3D model, making it more photorealistic. Experiments on synthetic and real data using quantitative and qualitative evaluation demonstrated the superiority of our approach in recovering both fine-scale geometry and high-fidelity texture.Code is available at https://adjointopti.github.io/adjoin.github.io/.
description: 12 pages, published on TVCG; Project page: https://adjointopti.github.io/adjoin.github.io/
Photoinduced Pseudospin Polarization in a Three-Orbital Hubbard Model
Creators: name: Yonemitsu, Kenji
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In a Hubbard model for the Kitaev spin-liquid candidate material $α$-RuCl$_3$ with three $t_{2g}$ orbitals per Ru site, we calculate photoinduced dynamics based on the exact diagonalization method and interpret them with the help of a high-frequency expansion in quantum Floquet theory. The high-frequency expansion shows two types of effective magnetic fields during the application of a circularly polarized light field. One of them originates from spin-orbit coupling and is within the honeycomb lattice. The other is of purely kinetic origin and perpendicular to the lattice. The former fields are antiparallel at the two sites within a unit cell and rotate in accordance with the momentum distribution of holes that follow the light field. When the light field is weak, pseudospin dynamics are governed by the former fields; thus, the average of the pseudospins almost vanishes. The latter fields are parallel at the two sites within a unit cell and produce nonzero perpendicular components of the pseudospins when the light field is strong. Numerically obtained perpendicular components are consistent with the latter fields when the frequency of the light field is well below the Mott gap. The relevance to the inverse Faraday effect recently observed in $α$-RuCl$_3$ is discussed.
description: 34 pages, 8 figures
IoT MUD FFSPIN
Creators: name: Kothapalli, Hemanth
Publisher: name: figshare
Year: 2023
Subjects: System and network security
Data security and protection

description: Targeted data breaches and cybersecurity attacks involving IoT devices are becoming ever more concerning. To combat these threats and risks, the IETF standardized Manufacturer Usage Description (MUD), which allows IoT device vendors to specify the intended communication patterns (MUD profile) of an IoT device. MUD profile enables validation of the actual communication pattern of an IoT device with the intended behavior at run-time. However, the MUD specification was primarily intended for enforcement at the Local Area Network (LAN) of the IoT device, thus fragmenting the solution across multiple heterogeneous networks. MUD enforcement at higher levels in the network hierarchy (e.g., private edge for enterprise networks) eases security policy management and reduces processing overheads on the existing security infrastructure.
 To realize MUD enforcement at the edge, there are mainly two challenges: (1) How to identify an IoT device at the edge so that enforcing device-specific MUD profile on the IoT traffic is possible. (2) Howto scale MUD enforcement to a large network of IoT devices. In this paper, we present our approach to address these challenges and validate IoT device communication at the edge. In order to scale MUD enforcement to a large IoT network, we leverage multi-stage pipeline architecture and stateful ALUs of P4 programmable switch and process IoT traffic in the dataplane.
Influence of Helical Spin Structure on the Magnetoresistance of an Ideal Topological Insulator
Creators: name: Ozturk, Teoman
name: Field, Richard L.
name: Eo, Yun Suk
name: Wolgast, Steven
name: Sun, Kai
name: Kurdak, Cagliyan
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In an ideal topological insulator, the helical spin structure of surface electrons suppresses backscattering and thus can enhance surface conductivity. We investigate the effect of perpendicular magnetic field on the spin structure of electrons at the Fermi energy and calculate a magnetic-field dependent topological enhancement factor for different disorder potentials, ranging from short-range disorder to screened Coulomb potential. Within the Boltzmann approximation, the topological enhancement factor reaches its maximum value of 4 for a short-range disorder at zero magnetic field and approaches a value of 1 at high magnetic fields independent of the nature of the disorder potential.
description: Corrected a typo in one of the author names
P&M | Eau de parfum: riflessi nelle fonti dell'ispirazione
Creators: name: Bonoldi Lorenzo
Publisher: name: La Rivista di Engramma
Year: 2005
Subjects: Images
Advertasing
Warburg
Perfume

description: The Peithò & Mnemosyne section was born to apply the Warburghian method to the study of the advertising images and communication.
Large and Small Fermi-Surface Spin Density Waves in the Kondo Lattice Model
Creators: name: Peters, Robert
name: Kawakami, Norio
Publisher: name: arXiv
Year: 2015
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We demonstrate the existence of metallic spin density waves (SDWs) in the Kondo lattice model on a square lattice for a wide range of parameters by means of real space dynamical mean field theory. In these SDWs, the spin polarization as well as the charge density depend on the lattice site and are modulated along one direction of the square lattice. We show that within this phase of metallic SDWs the Fermi surface changes from small to large, when the coupling strength is increased. Furthermore, the transition between the large Fermi-surface SDW phase and the paramagnetic phase is of second order, while the transition between the small Fermi-surface SDW phase and the paramagnetic phase is of first order. A local quantum critical point is thus avoided in our calculations by undergoing a first order phase transition.
2022 MSR Articles - Ononye.pdf
Creators: name: Ononye, Uzoma
Publisher: name: figshare
Year: 2023
Subjects: Innovation management
Organisational behaviour
Public sector organisation and management
Strategy

description: Knowledge co-creation affects innovation, but the bureaucratic constraints to collaborative
 interactions in public organisation makes its influence to seem unclear. Even so, trust has been
 identified as a factor fostering the link between knowledge co-creation and innovation in an
 organisation. However, this claim has not been empirically confirmed and supported in a public
 sector context. Hence, the study empirically examined the relationship between knowledge cocreation and innovation with trust as a moderation factor in a public organisation in Delta State,
 Nigeria. Data were collected from 131 employees from the Delta State Ministry of Health in Nigeria,
 which were analysed using the two step structural equation modelling approach. The partial least
 square (PLS) was used as the analytical technique. The study found that knowledge co-creation
 positively affected innovation with trust as a significant catalyst for the structural path connecting
 both constructs. Practical implications were provided for public organisations looking to improve
 innovation with knowledge co-creation and trust.
Entanglement of Polarization and Orbital Angular Momentum
Creators: name: Bhatti, Daniel
name: von Zanthier, Joachim
name: Agarwal, Girish S.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate two-photon entangled states using two important degrees of freedom of the electromagnetic field, namely orbital angular momentum (OAM) and spin angular momentum. For photons propagating in the same direction we apply the idea of $\textit{entanglement duality}$ and develop schemes to do $\textit{entanglement sorting}$ based either on OAM or polarization. In each case the entanglement is tested using appropriate witnesses. We finally present generalizations of these ideas to three- and four-photon entangled states.
description: 6 pages, 3 figures
Improving the convergence properties of the moving-mesh code AREPO
Creators: name: Pakmor, Ruediger
name: Springel, Volker
name: Bauer, Andreas
name: Mocz, Philip
name: Munoz, Diego J.
name: Ohlmann, Sebastian T.
name: Schaal, Kevin
name: Zhu, Chenchong
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Accurate numerical solutions of the equations of hydrodynamics play an ever more important role in many fields of astrophysics. In this work, we reinvestigate the accuracy of the moving-mesh code \textsc{Arepo} and show how its convergence order can be improved for general problems. In particular, we clarify that for certain problems \textsc{Arepo} only reaches first-order convergence for its original formulation. This can be rectified by simple modifications we propose to the time integration scheme and the spatial gradient estimates of the code, both improving the accuracy of the code. We demonstrate that the new implementation is indeed second-order accurate under the $L^1$ norm, and in particular substantially improves conservation of angular momentum. Interestingly, whereas these improvements can significantly change the results of smooth test problems, we also find that cosmological simulations of galaxy formation are unaffected, demonstrating that the numerical errors eliminated by the new formulation do not impact these simulations. In contrast, simulations of binary stars followed over a large number of orbital times are strongly affected, as here it is particularly crucial to avoid a long-term build up of errors in angular momentum conservation.
description: 11 pages, 9 figures, accepted for publication
Large-scale influence of numerical noises as artificial stochastic disturbances on a sustained turbulence
Creators: name: Qin, Shijie
name: Liao, Shijun
Publisher: name: arXiv
Year: 2022
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We investigate the large-scale influence of numerical noises as tiny artificial stochastic disturbances on a sustained turbulence. Using the two-dimensional (2D) turbulent Rayleigh-Bénard (RB) convection as an example, we numerically solve the NS equations, separately, by means of a traditional algorithm with double precision (marked by RKwD) and the so-called clean numerical simulation (CNS). The numerical simulation given by the RKwD is a mixture of the "true" physical solution and the "false" numerical noises that is random and can be regarded as a kind of artificial stochastic disturbances: unfortunately, the "true" physical solution is mostly at the same level as the "false" numerical noises. By contrast, the CNS can greatly reduce the background numerical noise to any a required level so that the "false" numerical noises are negligible compared with the "true" physical solution and thus the CNS solution can be used as a "clean" benchmark solution for comparison. It is found that the numerical noises as tiny artificial stochastic disturbances could indeed lead to large-scale deviations of simulations not only in spatio-temporal trajectories but also even in statistics. Especially, these numerical noises (as artificial stochastic disturbances) even lead to different types of flows: the shearing convection occurs for the RKwD simulations, and its corresponding flow field turns to a kind of zonal flow thereafter, however the CNS benchmark solution always sustains the non-shearing vortical/roll-like convection during the whole process of simulation. Thus, we provide a rigorous evidence that numerical noises as a kind of small-scale artificial stochastic disturbances have quantitatively and qualitatively large-scale influences on a sustained turbulence, i.e. the 2D turbulent RB convection considered in this paper.
description: 25 pages, 11 figures and 1 table. Accepted by Journal of Fluid Mechanics
แนวทางในการพัฒนาตนเองของครูผู้สอนภาษาอังกฤษเพื่อเตรียมความพร้อมเข้าสู่อาเซียน
Creators: name: ศิตา เยี่ยมขันติถาวร
Publisher: name: ศูนย์สนับสนุนและพัฒนาการเรียนการสอน มหาวิทยาลัยรังสิต
Year: 2014
Subjects: ASEAN Community
English Teacher
Personal Development Techniques
ครูผู้สอนภาษาอังกฤษ
อาเซียน
เทคนิคการพัฒนาตนเอง

description: วารสารพัฒนาการเรียนการสอน, 8, 2, 147-159
Interference of short optical pulses from independent gain-switched laser diodes for quantum secure communications
Creators: name: Yuan, Z. L.
name: Lucamarini, M.
name: Dynes, J. F.
name: Frohlich, B.
name: Ward, M. B.
name: Shields, A. J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Since the introduction of the decoy-state technique, phase-randomised weak coherent light pulses have been the key to increase the practicality of quantum-based communications. Their ultra-fast generation was accomplished via compact gain-switched (GS) lasers, leading to high key rates in quantum key distribution (QKD). Recently, the question arose of whether the same laser could be employed to achieve high-speed measurement-device-independent-QKD, a scheme that promises long-haul quantum communications immune to all detector attacks. For that, a challenging highvisibility interference between independent picosecond optical pulses is required. Here, we answer the above question in the affirmative by demonstrating high-visibility interference from two independent GS lasers triggered at 1GHz. The result is obtained through a careful characterization of the laser frequency chirp and time jitter. By relating these quantities to the interference visibility, we obtain a parameter-free verification of the experimental data and a numerical simulation of the achievable key rates. These findings are beneficial to other applications making use of GS lasers, including random number generation and standard QKD.
description: 6 pages, 5 figures
Вопросы устойчивого развития общества,Выпуск 5МКСС 2023
Creators: name: ООО "Институт развития образования и консалтинга"
Publisher: name: ООО "Институт развития образования и консалтинга"
Year: 2023

description: Вопросы устойчивого развития общества,Выпуск 5МКСС 2023
title: Détails d'installation d'une fenêtre parfaitement étanche
Creators: name: Lacasse, M. A.
name: Armstrong, M. M.
Publisher: name: Conseil national de recherches du Canada. Construction
Year: 2013
Subjects: subject: fenêtre
subject: installation
subject: étanchéité à l'air

description: L'installation efficace et durable des fenêtres demande une bonne étanchéité à l'air et une bonne gestion de l'eau. Dans ce numéro, on explique le rôle joué par le degré d'étanchéité à l'air et l'emplacement du plan d'étanchéité à l'air de l'interface mur-fenêtre dans les infiltrations d'eau de pluie. C'est le deuxième numéro d'une série de Solutions constructives sur les détails d'installation des fenêtres.
description: An effective and durable window installation demands good airtightness and proper water management. This Update explains how the degree of airtightness and the location of the plane of airtightness of the wall-window interface affect water entry. It is the second in a series of Updates presenting results from studies of window installation details.
Introducing Educational Attainment to the Poststratification Adjustment in the National Survey on Drug Use and Health
Creators: name: Cribb, Devon
name: Chen, Patrick
name: Dai, Lanting
name: Spagnola, Kathy
name: Cai, Rong
name: Cooper, P. Mae
name: Hoenig, Jennifer M.
Publisher: name: Zenodo
Year: 2023

description: The National Survey on Drug Use and Health (NSDUH) provides national estimates of substance use and mental health among the civilian, noninstitutionalized population aged 12 or older in the United States. Since Quarter 4 of 2020, multimode (web and in-person) data collection has been employed in NSDUH. Adult web respondents had higher levels of educational attainment than adult in-person respondents, and educational attainment is often correlated with survey outcomes in NSDUH. To correct the imbalance of the educational attainment distributions across survey modes, educational attainment was added as a covariate to the poststratification adjustment in the 2020, 2021, and 2022 NSDUH weighting. Educational attainment proportions calculated from 1-year American Community Survey (ACS) data were used to derive control totals for the main effect and two-way interactions of educational attainment by demographic variables and by state. Two approaches for calculating educational attainment proportions, marginal distribution and cell distribution, were compared for accuracy across domains and summation of subdomains. The impact of excluding the institutionalized population and the active-duty military population from the 1-year ACS data was also investigated and is discussed.
A Scenario for the Fine Structures of Solar Type IIIb Radio Bursts Based on the Electron Cyclotron Maser Emission
Creators: name: Wang, C. B.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: A scenario based on the electron cyclotron maser emission is proposed for the fine structures of solar radio emission in the present discussion. It is suggested that under certain conditions modulation of the ratio between the plasma frequency and electron gyro-frequency by ultra low frequency waves, which is a key parameter for excitation of the electron cyclotron maser instability, may lead to the intermittent emission of radio waves. As an example, the explanation of the observed fine-structure components in the solar type IIIb burst is discussed in detail. Three primary issues of the type IIIb bursts are addressed: 1) what is the physical mechanism that results in the intermittent emission elements that form a chain in the dynamic spectrum of type IIIb bursts, 2) what causes the split pair (or double stria) and the triple stria, 3) why in the events of fundamental-harmonic pair emission there is only IIIb-III, but IIIb-IIIb or III-IIIb cases are very rarely observed.
description: Published in The Astrophysical Journal
title: Window installation details for effective sealing practice
Creators: name: Lacasse, M. A.
name: Armstrong, M. M.
Publisher: name: National Research Council of Canada. Construction
Year: 2013
Subjects: subject: airtightness
subject: installation details
subject: wall-window interface
subject: watertightness
subject: window installation

description: An effective and durable window installation demands good airtightness and proper water management. This Update explains how the degree of airtightness and the location of the plane of airtightness of the wall-window interface affect water entry. It is the second in a series of Updates presenting results from studies of window installation details.
description: L’installation efficace et durable des fenêtres demande une bonne étanchéité à l’air et une bonne gestion de l’eau. Dans ce numéro, on explique le rôle joué par le degré d’étanchéité à l’air et l’emplacement du plan d’étanchéité à l’air de l’interface mur-fenêtre dans les infiltrations d’eau de pluie. C’est le deuxième numéro d’une série de Solutions constructives sur les détails d’installation des fenêtres.
Slum-upgrading in the academic and World Bank discourse : a thematic analysis of academic articles and World Bank publications on slum-upgrading
Creators: name: Brune, Robert
Publisher: name: University of St Andrews
Year: 2022
Subjects: subject: HV4028.B8
subject: World Bank
subject: Slums
subject: Urban poor--Housing
subject: Urban renewal

description: The World Bank’s Open Knowledge Repository and the academic discourse provide two major sources of knowledge on slum-upgrading. As they have thus far remained separate entities, this project sets out to contrast and compare both discourses and to figure out what opportunities their synthesis would provide for policy, research, and practice. Using a thematic- network approach to analysis, this project examines focal themes in both discourses and compares themes across them. It finds that while academic and World Bank discourse share a significant number of themes, the perspective from which they investigate these themes differs strongly. The World Bank’s discourse, thus, often focuses on the policy level and only looks toward slum communities top-down. The academic discourse on the other hand focuses predominantly on the grassroots level and is focally concerned with what impact slum- upgrading projects create for their beneficiaries. It concludes that while both discourses would offer significant opportunities for research, policy and practice to explore slum-upgrading from a holistic perspective, in practice, significant tensions between both discourses make a synthesis of academic and World Bank literature often difficult. It suggests that both discourses must expand their perspective toward each other to make synthesis more feasible.
title:  Dante and the law: the influence of legal categories on 14th century political thought
Creators: name: Menzinger, Sara
Publisher: name: Roma TrE-Press
Year: 2019

description: Le relazioni tra Chiesa e Impero furono discusse intensamente in Europa - un canone e scuole di diritto civile dal 12 ° secolo in poi. L'articolo intende analizzare il pensiero politico di Dante alla luce dei grandi dibattiti legali che hanno avuto luogo in questi ambienti. Le dimensioni teologiche, giuridiche e politiche non possono essere considerate separatamente nella prospettiva intellettuale del XIV secolo. La polemica duratura sul fatto che Dante abbia studiato la legge è quindi deliberatamente oscurata dalla convinzione che la familiarità con le questioni legali fosse semplicemente un elemento dell'identità intellettuale del Trecento.

Nelle pagine seguenti mi concentrerò sull'influenza dei dibattiti legali del tardo medioevo sul pensiero politico italiano. Inizierò dall'uso della Bibbia in Dante, che spesso si basa su un'interpretazione teologico-giuridica delle Scritture per screditare le tesi più radicali del pensiero giuridico ecclesiastico del suo tempo. Cercherò quindi di illustrare le ragioni per cui Dante non condanna la scienza giuridica canonica nel suo complesso, ma fa una distinzione tra l'antico e rispettato pensiero giuridico della generazione di Graziano (XII secolo) - che ha sostenuto il principio tardoantico di non interferenza tra i due poteri universali - e la nuova direzione gerocratica presa dal pensiero giuridico canonico dopo la Riforma Gregoriana. La superiorità del mondo spirituale sul secolare, a lungo sostenuta dalla Chiesa sin dall'inizio del XIII secolo, è considerata da Dante, un secolo dopo, come la principale fonte di problemi politici e, nel suo caso, anche personali. L'ultima sezione del documento è dedicata al concetto di Impero nel pensiero giuridico e politico del tardo medioevo. Cerco di dimostrare perché sostenere l'Impero non può essere ridotto semplicemente al sostegno di una fazione politica, ma è piuttosto espressione di un sentimento di profonda comprensione della funzione pubblica del governo imperiale, un sentimento che può essere compreso meglio se noi prendere in considerazione gli studi di diritto pubblico romano intrapresi da avvocati italiani e francesi negli ultimi secoli del Medioevo.
description: Roma Tre Law Review – 01/2019