cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
On the mechanism of the pulsed high energy emission from the pulsar PSR B1509-58
Creators: name: Chkheidze, Nino
name: Osmanov, Zaza
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We investigate the high-energy (HE) ($<1$GeV) emission from the pulsar PSR B1509-58 and its relation to the radio emission in the 1.4GHz frequency band. The role of the quasi-linear diffusion in producing the pulsed HE radiation is investigated. We show that by means of the cyclotron instability the relatively low frequency waves excite, which due to the diffusion process influence the particle distribution function and switch on the synchrotron emission mechanism. We argue that the coincidence of HE main peak and the radio pulse is a direct consequence of the fact that the high and low frequency radiation is produced simultaneously in a local area of the pulsar magnetosphere. In the paper we also consider the absence of the radio counter pulse and explain this fact.
description: 5 pages, 2 figures
Modeling of income distribution in the European Union with the Fokker-Planck equation
Creators: name: Jagielski, Maciej
name: Kutner, Ryszard
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Finance (q-fin.GN)
subject: Physics and Society (physics.soc-ph)
subject: Statistical Finance (q-fin.ST)
subject: FOS: Economics and business
subject: FOS: Physical sciences

description: Herein, we applied statistical physics to study incomes of three (low-, medium- and high-income) society classes instead of the two (low- and medium-income)classes studied so far. In the frame of the threshold nonlinear Langevin dynamics and its threshold Fokker-Planck counterpart, we derived a unified formula for description of income of all society classes, by way of example, of those of the European Union in year 2006 and 2008. Hence, the formula is more general than the well known that of Yakovenko et al. That is, our formula well describes not only two regions but simultaneously the third region in the plot of the complementary cumulative distribution function vs. an annual household income. Furthermore, the known stylised facts concerning this income are well described by our formula. Namely, the formula provides the Boltzmann-Gibbs income distribution function for the low-income society class and the weak Pareto law for the medium-income society class, as expected. Importantly, it predicts (to satisfactory approximation) the Zipf law for the high-income society class. Moreover, the region of medium-income society class is now distinctly reduced because the bottom of high-income society class is distinctly lowered. This reduction made, in fact, the medium-income society class an intermediate-income society class.
description: Accepted for publication in Physcia A
Data-Driven Technology Management Supported by Artificial Intelligence Solutions
Creators: name: Schuh, Günther
name: Boßmeyer, Hans-Jürgen
name: Brälking, André
Publisher: name: Hannover : publish-Ing.
Year: 2021
Subjects: subject: Technology Management
subject: Technology Database
subject: Information Retrieval
subject: Artificial Intelligence
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Technology Management is an important part of a company’s business strategy. Procuring, evaluating and processing information is crucial for this process' success. This paper describes the way of dealing with today’s challenge of information overload. We introduce technology databases based on the patented TCB/SETS system, concepts of Artificial Intelligence-based information processing and present exemplary existing solutions. Afterwards, we discuss a concept which combines TCB/SETS and information retrieval solutions to a new smart approach. With our paper we address application oriented and theoretical working interest groups such as engineers and technology managers as well as scientists in research and teaching.
Design and Development of an Ultrasonic Motion Detector
Creators: name: Zungeru, A. M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Other Computer Science (cs.OH)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: The ultrasonic motion detector devices emit ultrasonic sound energy into an area of interest (monitored area), and this further reacts to a change in the reflected energy pattern. The system uses a technique that is based on a frequency shift in reflected energy to detect a movement or change in position (motion). In this system, ultrasonic sound is transmitted from the transmitting device which is normally in the form of energy. The transmitted sound utilizes air as its medium and this travel in a wave type motion. The wave is reflected back from the surroundings in the room/hallway and the device hears a pitch characteristic of the protected environment. In this system, the wave pattern is disturbed and reflected back more quickly, thus increasing the pitch and signaling an alarm whenever motion is detected. The main contribution of this work is the design of a circuit that can sense motion through movement of anything, a low cost and portable motion detector, and the design of a circuit that can be used to trigger another circuit whether to ON or OFF depending on the circuit attached to it. Generally, the design is made to detect movement or moving object in a an enclosed area. In this work, a transmitter transducer generates a signal at a frequency of 40khz, and when the signal is blocked by any moving object, and this in turn, triggers a buzzer via a timing circuit. This system works on the principle of the signal interference by a moving body, and the system is dependent on the presence of an intruder or moving object within a monitored area. The system after design and construction was tested and found to work in accordance with specifications.
description: 7 figures, 13 pages
Validation and Evaluation initial report
Creators: name: Oldani, Federico
name: Araujo, Rosa
Publisher: name: Zenodo
Year: 2023

description: The document outlines the validation process for the Intelligent Services developed as part of the VitiGEOSS project. This project aims to provide the winemaking community with cutting-edge tools to improve their sustainability practices and optimize their production processes.
 In the second vegetative season (2022), the Intelligent Services are thoroughly validated using data collected from three demo sites. The performances of the VitiGEOSS services are monitored and evaluated using various metrics. This includes the ability of the tool to forecast vine phenology, monitor key crop indicators, provide climate prediction, predict the occurrence of vine diseases, deliver precise disease treatment recipes, optimize the use of resources and tasks, and evaluate sustainable indicators.
Residual stresses in milled titanium parts
Creators: name: Köhler, Jens
name: Grove, T.
name: Maiß, O.
name: Denkena, Berend
Publisher: name: Amsterdam : Elsevier BV
Year: 2012
Subjects: subject: Milling
subject: Residual stress
subject: Surface Integrity
subject: Titanium
subject: Cutting speed
subject: Face milling
subject: Grain size
subject: Induced stress
subject: Large components
subject: Layer removal
subject: Machining Process
subject: Material property
subject: Measuring method
subject: Part distortion
subject: Peripheral milling
subject: Process forces
subject: Stress determination
subject: Structural parts
subject: Surface integrity
subject: Tool geometry
subject: Workpiece materials
subject: Aerospace industry
subject: Milling (machining)
subject: Production engineering
subject: World Wide Web
subject: Residual stresses
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Residual stresses can cause part distortion especially in the case of large components such as structural parts in aerospace industry. Therefore, this paper investigates the machining induced residual stresses for milling of a workpiece material with increasing usage in industry, titanium. For stress determination a practical modification of an indirect measuring method, the layer removal method, is applied, as it can offer advantages compared to X-ray-measurements. It is robust against material properties such as grain size or texture which can complicate the X-ray-method. Afterwards two typical machining processes, face milling and peripheral milling are investigated regarding residual stress. A correlation between process forces and value and depth of the induced stresses is identified by a variation of feed per tooth and the tool geometry by means of usage of a worn tool. Increasing cutting speed leads to increased penetration depth in case of face milling and did not exhibit strong influence on the end milled subsurface.
A simple case of rationality of escalation
Creators: name: Lescanne, Pierre
Publisher: name: arXiv
Year: 2013
Subjects: subject: Computer Science and Game Theory (cs.GT)
subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences

description: Escalation is the fact that in a game (for instance an auction), the agents play forever. It is not necessary to consider complex examples to establish its rationality. In particular, the $0,1$-game is an extremely simple infinite game in which escalation arises naturally and rationally. In some sense, it can be considered as the paradigm of escalation. Through an example of economic games, we show the benefit economics can take of coinduction.
On the toroidal nature of the low-energy E1 mode
Creators: name: Repko, A.
name: Reinhard, P. -G.
name: Nesterenko, V. O.
name: Kvasil, J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The nature of E1 low-energy strength (LES), often denoted as a "pygmy dipole resonance", is analyzed within the random-phase-approximation (RPA) in $^{208}$Pb using Skyrme forces in fully self-consistent manner. A first overview is given by the strength functions for the dipole, compressional and toroidal operators. More detailed insight is gained by averaged transition densities and currents where the latter provide very illustrative flow pattern. The analysis reveals clear isoscalar toroidal flow in the low-energy bin 6.0-8.8 MeV of the LES and a mixed isoscalar/isovector toroidal/compression flow in the higher bin 8.8-10.5 MeV. Thus the modes covered by LES embrace both vortical and irrotational motion. The simple collective picture of the LES as a "pygmy" mode (oscillations of the neutron excess against the nuclear core) is not confirmed.
description: 5 pages, 7 figures
An electronic digital combination lock: A precise and reliable security system
Creators: name: Zungeru, A. M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Other Computer Science (cs.OH)
subject: FOS: Computer and information sciences

description: The increasing rate of crime, attacks by thieves, intruders and vandals, despite all forms of security gadgets and locks still need the attention of researchers to find a permanent solution to the well being of lives and properties of individuals. To this end, we design a cheap and effective security system for buildings, cars, safes, doors and gates, so as to prevent unauthorized person from having access to ones properties through the use of codes, we therefore experiment the application of electronic devices as locks. However, a modular approach was employed in the design in which the combination lock was divided into units and each unit designed separately before being coupled to form a whole functional system. During the design, we conducted Twenty tests with the first eight combinations being four in number, the next seven tests being five and the last five combinations being six. This was done because of the incorporation of 2 dummy switches in the combinations. From the result obtained, combinations 8, 11, 13 gave the correct output combination. However, 8 being the actual combination gave the required output. The general operation of the system and performance is dependent on the key combinations. The overall system was constructed and tested and it works perfectly.
description: 13 pages, 9 figures, 1 Table
Contact zone analysis based on multidexel workpiece model and detailed tool geometry representation
Creators: name: Boess, V.
name: Ammermann, C.
name: Niederwestberg, D.
name: Denkena, Berend
Publisher: name: Amsterdam : Elsevier BV
Year: 2012
Subjects: subject: BREP model
subject: Force calculation
subject: Graphics hardware (GPU)
subject: Multidexel model
subject: NC-simulation
subject: Tool stress
subject: B-rep models
subject: Graphics hardware
subject: Cutting
subject: Cutting tools
subject: Geometry
subject: Topology
subject: Computer simulation
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: A new method for analyzing the tool-workpiece-contact area in cutting processes is presented. To gain enhanced knowledge about tool-workpiece interaction, determination of chip thickness, contact length and resulting cross-section area of the undeformed chip is of major interest. Compared to common simulation approaches, where rotation-symmetrically constructed tool geometry is used, the new method uses a detailed three dimensional tool shape model for an extended and more accurate contact zone analysis. As a corresponding representation of the workpiece and its time dependent shape-changes a multidexel model is used. To prepare the geometric tool model, the contained BREP topology is built up within the simulation system using data from a STEP-file. First of all functional parts of the tool like rake and flank faces and cutting edges are labeled for further processing. In a second step the identified NURBS-faces are discretized for the application in material-removal calculation. This way a mesh is built-up based on triangle elements which maps the geometry of each cutting edge into a 2D parametric representation. In relation to rake face, each node is described by its position on the cutting edge and its perpendicular distance to this edge. To perform contact zone analysis each cutting geometry and a multidexel model are intersected in discrete time steps corresponding to a tool rotation of about three degrees. The intersection point of each dexel and the cutting geometry is calculated. Parametric cutting geometry allows for a direct computation of local cutting depth and contact length for each involved point. Based on the local values of contact length and cross section area of the undeformed chip the characteristic values for the entire contact zone are calculated and used to predict mechanical as well as thermal loads caused by the cutting process. To demonstrate the application of the novel approach, prediction of forces in slot milling of 1.1191 steel is presented.
title: What Are the Visible and Invisible Archaeologies of Conflict in the Irish Landscape of Donegal and How May These Be Contextualised and Represented Through Arts Practice
Creators: name: Sutherland, Mhairi
Publisher: name: Technological University of Dublin
Year: 2012

description: The research question - "What are the visible and invisible archaeologies of conflict in the Irish landscape of Donegal and how may these be contextualised and represented through arts practice?" has been addressed through textual and historical research and through arts practice, using lens-based media in the exploration of an historic series of military circumstances, in the contemporary Irish landscape of County Donegal. The research undertaken and the resulting outcomes are presented as a textual narrative and as visual arts practice. The thesis material is composed of five chapters, each of which discusses selected arguments in the fields of, respectively; the modification of human sight through opticality and the emergence of modern photography, origins of the geographical discipline and the visual influence on formations of cultural landscape, a contemporary archaeological approach to sites of conflict and examples of relevant artwork, and a characterisation and discussion of Ireland's position of neutrality during the Second World War, including a critical review of the images produced on this topic. This fourth chapter is intended to function as context and framework for the fifth chapter, the re-imagining of the landscape through the arts practice, shown in the Arc of Fire website, which is composed of selected visual material from the live research phase and the site-specific exhibition installed in Fort Dunree in the Inishowen peninsula. The conclusions form the final part of the thesis. Photography and lens based processes, explored as a critical history and employed as a working method of my professional arts practice, is fundamental to the research project.
Oil droplet behavior at a pore entrance in the presence of crossflow: Implications for microfiltration of oil-water dispersions
Creators: name: Darvishzadeh, Tohid
name: Tarabara, Volodymyr V.
name: Priezjev, Nikolai V.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The behavior of an oil droplet pinned at the entrance of a micropore and subject to clossflow-induced shear is investigated numerically by solving the Navier-Stokes equation. We found that in the absence of crossflow, the critical transmembrane pressure required to force the droplet into the pore is in excellent agreement with a theoretical prediction based on the Young-Laplace equation. With increasing shear rate, the critical pressure of permeation increases, and at sufficiently high shear rates the oil droplet breaks up into two segments. The results of numerical simulations indicate that droplet breakup at the pore entrance is facilitated at lower surface tension, higher oil-to-water viscosity ratio and larger droplet size but is insensitive to the value of the contact angle. Using simple force and torque balance arguments, an estimate for the increase in critical pressure due to crossflow and the breakup capillary number is obtained and validated for different viscosity ratios, surface tension coefficients, contact angles, and drop-to-pore size ratios.
description: 37 pages, 16 figures
The 2MASS Tully-Fisher Survey : Mapping the Mass in the Universe
Creators: name: Hong, T.
name: Staveley-Smith, L.
name: Masters, K.
name: Springob, C.
name: Macri, L.
name: Koribalski, B.
name: Jones, H.
name: Jarrett, T.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The 2MASS Tully-Fisher Survey (2MTF) aims to measure Tully-Fisher (TF) distances for all bright inclined spirals in the 2MASS Redshift Survey (2MRS) using high quality HI widths and 2MASS photometry. Compared with previous peculiar velocity surveys, the 2MTF survey provides more accurate width measurements and more uniform sky coverage, combining observations with the Green Bank, Arecibo and Parkes telescopes. With this new redshift-independent distance database, we will significantly improve our understanding of the mass distribution in the local universe.
description: 4 pages, 3 figures, IAU Symposium 289 proceeding
Analysis of Binary and ternary mixtures of lipids and high-throughput generation of monolayers on 2-D crystalline surfaces
Creators: name: Pintro, Chris Justin
Publisher: name: Purdue University Graduate School
Year: 2023
Subjects: Inorganic materials (incl. nanomaterials)
Nanochemistry

description: From applications in nanoscale electronics to regenerative medicine, there is a strong need for control assembly processes at nanometer length scales.1,2 In this work, we investigate the application of microscale droplet delivery as a rapid and scalable approach to pattern the molecular assembly of nanoscale chemical patterns on highly oriented pyrolytic graphite (HOPG). Furthermore, it was also observed that variations in the blend of alkyl impurities present in technical-grade OLAm reagents influenced the temperature-dependent assembly behavior.13 This suggests a likely role of alkyl chain phase transitions in the ligand shell, particularly in more complex mixtures and for anisotropic nanocrystals. Oleylamine (OLAm) is a common technical-grade reagent used in nanocrystal synthesis. Most nanocrystal synthesis is done using technical grade Oleylamine (70% purity). Higher purity reagents are not readily available because in certain instances, technical grades are obtained from natural substances, resulting in differing impurities compared to those generated during preparative reactions using pure raw materials.3 Technical grade reagents of OLAm contain 70% of the cis chain OLAm and 30% of an unspecified mixture of Elaidylamine (ELAm) , Octadecylamine (ODAm) and segments of various lengths and saturated alkyl chains.4,5 Here, we use Differential Scanning Calorimetry thermograms to investigate the miscibility of binary mixtures of OLAm/ELAm, OLAm/ODAm, and ELAm/ODAm. Ternary mixtures of the lipids showed clear peaks for the trans and saturated impurities. We patterned graphite surfaces with amphiphiles via inkjet printing to quickly generate 1-nm-wide functional patterns. Inkjet printing allowed for long-scale hierarchical patterning. We investigated various ink formulations and the resulting printing quality of functional monolayers on 2D crystalline materials.
Adaptive cutting force control on a milling machine with hybrid axis configuration
Creators: name: Denkena, Berend
name: Flöter, F.
Publisher: name: Amsterdam : Elsevier BV
Year: 2012
Subjects: subject: Adaptive control
subject: Force control
subject: Magnetic guide
subject: Milling
subject: Adaptive Control
subject: Cutting force controls
subject: Indirect adaptive controllers
subject: Inhomogeneous materials
subject: Pole-placement controls
subject: Process simulations
subject: Recursive Least Square algorithm
subject: Adaptive control systems
subject: Aircraft engines
subject: Milling (machining)
subject: Milling machines
subject: Motion planning
subject: Repair
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: In the re-contouring process of aircraft engine components, the unknown geometry and inhomogeneous material properties of the workpiece are major challenges. For this reason a new repair process chain is supposed which consists of noncontact geometry identification, process simulation and NC-path planning, followed by a force controlled milling process. A new milling machine prototype is employed to ensure an effective force control loop. By use of a magnetic guided spindle slide, higher dynamics and precise tracking are enabled. Since variation of the process forces result in variable control plant characteristics, an indirect adaptive controller has been designed. Consequently, models of actuator and process are presented and the estimation of the present parameters by a recursive least square algorithm is outlined. Once the parameters are known, the control polynomials are calculated on the basis of a pole placement control approach. First experimental results of a force controlled milling process are put forward.
Do Technical Surveys Truly Track Technical Trends? A Study of Stack Overflow and GitHub – replication package
Creators: name: Thaker, Vivek
name: Wadhwa, Deekshant
name: Baysal, Olga
Publisher: name: Zenodo
Year: 2023

description: Replication package files, containing dataset files (e.g., CSV, TXT) as well as execution scripts (e.g., Python, Jupyter Notebook) for research purposes.
Typha glauca
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: S. glauca (L.) Pal. (S. pumila [Poiret] R. et Seh., S. lutescens [Weigel] F. T. Hubbard) Cat.376. l: La Balmaz (Coquoz); Vernayaz (J.); Salvan (Coquoz); Outre-Rhone (J., Garns). - 3: Econe undRiddes (Besse); Nendaz (J.); Bahnhof Visp (Huber); Törbel (Stebler); Saastal (A. Keller).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Modification of Proton Velocity Distributions by Alfvenic Turbulence in the Solar Wind
Creators: name: Pierrard, Viviane
name: Voitenko, Yuriy
Publisher: name: arXiv
Year: 2013
Subjects: subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: In the present paper, the proton velocity distribution function (VDF)in the solar wind is determined by solving numerically the kinetic evolution equation. We compare the results obtained when considering the effects of ex- ternal forces and Coulomb collisions with those obtained by adding effects of Alfven wave turbulence. We use Fokker-Planck diffusion terms due to Alfvenic turbulence, which take into account observed turbulence spectra and kinetic effects of finite proton gyroradius. Assuming a displaced Maxwellian for the proton VDF at the simulation boundary at 14 solar radii, we show that the turbulence leads to a fast (within several solar radii) development of the anti-sunward tail in the proton VDF. Our results provide a natural explanation for the nonthermal tails in the proton VDFs, which are often observed in-situ in the solar wind beyond 0.3 AU.
Development and analysis of microstructures for the transplantation of thermally sprayed coatings
Creators: name: Freiburg, D.
name: Biermann, D.
name: Peuker, A.
name: Kersting, P.
name: Maier, Hans Jürgen
name: Möhwald, Kai
name: Knödler, Patrick
name: Otten, Maik
Publisher: name: Amsterdam : Elsevier
Year: 2014
Subjects: subject: Coating
subject: Microstructure
subject: Milling
subject: Aspect ratio
subject: Automotive industry
subject: Coatings
subject: Milling (machining)
subject: Plasma jets
subject: Plasma spraying
subject: Sprayed coatings
subject: Tribology
subject: Wear resistance
subject: Adhesive strength
subject: Development process
subject: Lightweight materials
subject: Micromilling process
subject: Plasma-sprayed coatings
subject: Point of interest
subject: Thermally sprayed coatings
subject: Tribological surfaces
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Thermally sprayed coatings and tribological surfaces are a point of interest in many industrial sectors. They are used for better wear resistance of lightweight materials or for oil retention on surfaces. Lightweight materials are often used in the automotive industry as a weight-saving solution in the production of engine blocks. For this, it is necessary to coat the cylinder liners to ensure wear resistance. In most cases, the coating is sprayed directly onto the surface. Previous research has shown that it is possible to transfer these coatings inversely onto other surfaces. This was achieved with plasma sprayed coatings which were transplanted onto pressure-casted surfaces. These transplanted surfaces exhibited better adhesive strength, smoother surfaces, and lower form deviation compared to directly coated surfaces. Additionally, it was shown that even microstructures of a surface coated by plasma spraying can be transferred to pressure-casted surfaces. This paper presents the development and micromilling of different microstructures for transferring thermally sprayed coatings onto pressure-casted surfaces. In the development process, microstructures with different shapes and aspect ratios as well as thin tribological surfaces are designed in order to evaluate the advantages and limitations of the transplantation process. In subsequent experiments, the micromilling process and a simulation of the coating transplantation are presented and analyzed.
SimuTools - Split and merge strategies for solving uncertain equations using affine arithmetic
Creators: name: Scharf, Oliver
name: Olbrich, Markus
name: Barke, Erich
Publisher: name: New York, NY : A C M Special Interest Group
Year: 2015
Subjects: subject: Parametric statistics
subject: Mathematical optimization
subject: Nonlinear system
subject: Affine arithmetic
subject: Monte Carlo method
subject: Corner case
subject: Solver
subject: Computer science
subject: Convergence (routing)
subject: Parameter space
subject: Dewey Decimal Classification::600 | Technik

description: The behaviour of systems is determined by various parameters. Due to several reasons like e. g. manufacturing tolerances these parameters can have some uncertainties. Corner Case and Monte Carlo simulations are well known approaches to handle uncertain systems. They sample the corners and random points of the parameter space, respectively. Both require many runs and do not guarantee the inclusion of the worst case. As alternatives, range based approaches can be used. They model parameter uncertainties as ranges. The simulation outputs are ranges which include all possible results created by the parameter uncertainties. One type of range arithmetic is the affine arithmetic, which allows to maintain linear correlations to avoid over-approximation. An equation solver based on affine arithmetic has been proposed earlier. Unlike many other range based approaches it can solve implicit non-linear equations. This is necessary for analog circuit simulation. For large uncertainties the solver suffers from convergence problems. To overcome these problems it is possible to split the parameter ranges, calculate the solutions separately and merge them again. For higher dimensional systems this leads to excessive runtimes as each parameter is split. To minimize the additional runtime several split and merge strategies are proposed and compared using two analog circuit examples.
Mixed regime of light-matter interaction revealed by phase sensitive measurements of the dynamical Franz-Keldysh effect
Creators: name: Novelli, Fabio
name: Fausti, Daniele
name: Giusti, Francesca
name: Parmigiani, Fulvio
name: Hoffmann, Matthias
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The speed of ultra-fast optical switches is generally limited by the intrinsic electronic response time of the material. Here we show that the phase content of selected electromagnetic pulses can be used to measure the timescales characteristic for the different regimes of matter-light interactions. By means of combined single cycle THz pumps and broadband optical probes, we explore the field-induced opacity in GaAs (the Franz-Keldysh effect). Our phase-resolved measurements allow to identify a novel quasi-static regime of saturation where memory effects are of relevance.
Polar molecules in frustrated triangular ladders
Creators: name: Mishra, Tapan
name: Greschner, Sebastian
name: Santos, Luis
Publisher: name: College Park, MD : American Physical Society
Year: 2015
Subjects: subject: Ladders
subject: Molecules
subject: Bond ordering
subject: Density waves
subject: Hard cores
subject: Polar molecules
subject: Quantum phasis
subject: Supersolids
subject: Three body
subject: Two-component
subject: Stereochemistry
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Polar molecules in geometrically frustrated lattices may result in a very rich landscape of quantum phases, due to the nontrivial interplay between frustration, and two- and possibly three-body intersite interactions. In this paper we illustrate this intriguing physics for the case of hard-core polar molecules in frustrated triangular ladders. Whereas commensurate lattice fillings result in gapped phases with bond order and/or density-wave order, at incommensurate fillings we find chiral, two-component, and pair superfluids. We show as well that, remarkably, polar molecules in frustrated lattices allow for the observation of bond-ordered supersolids. © 2015 American Physical Society.
Stellar electron-capture rates in pf-shell nuclei from quasiparticle random-phase approximation calculations
Creators: name: Sarriguren, P.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Theory (nucl-th)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Electron-capture rates at different density and temperature conditions are evaluated for a set of pf-shell nuclei representative of the constituents in presupernova formations. The nuclear structure part of the problem is described within a quasiparticle random-phase approximation based on a deformed Skyrme Hartree-Fock selfconsistent mean field with pairing correlations and residual interactions in particle-hole and particle-particle channels. The energy distributions of the Gamow-Teller strength are evaluated and compared to benchmark shell-model calculations and experimental data extracted from charge-exchange reactions. The model dependence of the weak rates are discussed and the various sensitivities to both density and temperature are analyzed.
description: 18 pages, 26 figures. arXiv admin note: text overlap with arXiv:1102.0628
Fidelity susceptibility and conductivity of the current in one-dimensional lattice models with open or periodic boundary conditions
Creators: name: Greschner, Sebastian
name: Kolezhuk, A.K.
name: Vekua, T.
Publisher: name: College Park, MD : American Physical Society
Year: 2013
Subjects: subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We study, both numerically and analytically, the finite-size scaling of the fidelity susceptibility χJ with respect to the charge or spin current in one-dimensional lattice models and relate it to the low-frequency behavior of the corresponding conductivity. It is shown that in gapless systems with open boundary conditions the leading dependence on the system size L stems from the singular part of the conductivity and is quadratic, with a universal form χJ=[7ζ(3)/2π4]KL2, where K is the Luttinger liquid parameter and ζ(x) is the Riemann ζ function. In contrast to that for periodic boundary conditions the leading system size dependence is directly connected to the regular part of the conductivity and is subquadratic, χJ∝Lγ, where the K-dependent exponent γ is equal to 1 in most situations (as a side effect, this relation provides an alternative way to study the low-frequency behavior of the regular part of the conductivity). For open boundary conditions, we also study another current-related quantity, the fidelity susceptibility to the lattice tilt χP, and show that it scales as the quartic power of the system size, χP=[31ζ(5)/8π6](KL4/u2), where u is the sound velocity. Thus, the ratio L2χJ/χP directly measures the sound velocity in open chains. The behavior of the current fidelity susceptibility in gapped phases is discussed, particularly in the topologically ordered Haldane state. © 2013 American Physical Society.
Optimal multi-binding unification for sharing and linearity analysis
Creators: name: Amato, Gianluca
name: Scozzari, Francesca
Publisher: name: arXiv
Year: 2013
Subjects: subject: Programming Languages (cs.PL)
subject: FOS: Computer and information sciences

description: In the analysis of logic programs, abstract domains for detecting sharing properties are widely used. Recently the new domain $\Linp$ has been introduced to generalize both sharing and linearity information. This domain is endowed with an optimal abstract operator for single-binding unification. The authors claim that the repeated application of this operator is also optimal for multi-binding unification. This is the proof of such a claim.
description: To appear in Theory and Practice of Logic Programming (TPLP)
Depósito de Dados de Investigação no ZENODO
Creators: name: Salgueiro, Ângela
name: Almeida, Bruno
name: Araújo, Rui
Publisher: name: Zenodo
Year: 2023
Subjects: Ciência Aberta
Repositório de dados
Zenodo

description: Powerpoint com a apresentação feita ao workshop Depósito de Dados de Investigação no Zenodo, evento que integra o ciclo formativo dedicado à gestão de dados de investigação organizado pelo Núcleo de Desenvolvimento Digital da Investigação e pelo Grupo de Trabalho para a Ciência Aberta da NOVA FCSH.
Representations for creation and annihilation operators
Creators: name: Guadagnini, Enore
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A new representation -which is similar to the Bargmann representation- of the creation and annihilation operators is introduced, in which the operators act like "multiplication with" and like "derivation with respect to" a single real variable. The Hilbert space structure of the corresponding states space is produced and the relations with the Schroedinger representation are derived. Possible connections of this new representation with the asymptotic wave functions of the gauge-fixed quantum Chern-Simons field theory and (2+1) gravity are pointed out. It is shown that the representation of the fields operator algebra of the Chern-Simons theory in the Landau gauge is not a *-representation; the consequences on the evolution of the states in the semiclassical approximation are discussed.
description: 15 pages
Transverse Waves in Nonlinearly Elastic Solids and the Milne-Pinney (or Ermakov) Equation
Creators: name: Destrade, Michel
name: Saccomandi, Giuseppe
Publisher: name: arXiv
Year: 2013
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We establish a connection between the general equations of nonlinear elastodynamics and the nonlinear ordinary differential equation of Pinney [Proc. Amer. Math. Soc. 1 (1950) 681]. As a starting point, we use the exact travelling wave solutions of nonlinear elasticity discovered by Carroll [Acta Mechanica 3 (1967) 167]. The connection provides a method for finding new exact and approximate dynamic solutions for neo-Hookean and Mooney-Rivlin solids, and for the general third- and fourth-order elasticity models of incompressible solids.
description: 12 pages
title: The Press, Democracy and History: Journalism and Democracy in Transitional Societies
Creators: name: Foley, Michael
Publisher: name: Technological University of Dublin
Year: 2013

description: In 1989 the Berlin Wall came down signalling the beginning of the end of the post World-War-Two settlement that had divided Europe and created the Cold War. The communist world crumbled over a few years, but at a cost. There was a bitter war in the Balkans, shorter, but equally bitter conflicts in the Caucuses as well as in Central Asia. The Soviet Union fell apart leaving in its place new states varying in size from huge countries like Ukraine to the tiny states of the Baltic coast and Kyrgyzstan in far Central Asia. There was also enormous poverty as unemployment soared and incomes collapsed. It was expected that the region – a word often used by those working anywhere between Poland and Kazakhstan – would quickly embrace democracy and be market led. Aid poured in to facilitate that. Some countries in Eastern and Central Europe either fully or partially developed democratic institutions, and the market, especially in those countries seeking EU membership. Nevertheless, despite efforts by western donors, not all countries took equally to such developments. Some, like Belarus or Turkmenistan, developed authoritarian regimes, far worse than anything that had gone before. Moreover, in many countries there developed nostalgia for the former Soviet regime, as poverty increased and pensions lost value. Of considerable concern was the state of the press, radio and television and how the media was to be transformed from one that served the state and the Communist Party to one that would operate as one of the pillars of democracy. This concern led to programmes designed to develop the media and professionalise journalism. This writer was involved in a number of these programmes. 8 My introduction to the countries of the former communist regimes was through media development, training and education: I taught ethics to young journalists in Croatia, worked with journalists in Macedonia on establishing a code of ethics, worked with journalists in central Russia on journalism and journalists’ rights, and in Belarus on basic reporting. Later, I was involved on journalism education in Bulgaria, Ukraine and Azerbaijan and, more recently, with issues around children’s rights and journalism practice with UNICEF in Turkey, the Balkans, the Caucasus and Central Asia. I have chosen seven articles and a number of pieces of journalism for this submission. The work represents a number of years work in media development and also attempts to put the issues in some historical context.
Optical non-reciprocity of cold atom Bragg mirrors in motion
Creators: name: Horsley, S. A. R.
name: Wu, J. -H.
name: Artoni, M.
name: La Rocca, G. C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Reciprocity is fundamental to light transport and is a concept that holds also in rather complex systems. Yet, reciprocity can be switched off even in linear, isotropic and passive media by setting the material structure into motion. In highly dispersive multilayers this leads to a fairly large forward-backward asymmetry in the pulse transmission. Moreover, in multilevel systems, this transport phenomenon can be all-optically enhanced. For atomic multilayer structures made of three-level cold Rubidium 87 atoms, for instance, forward-backward transmission contrast around 95 per cent can be obtained already at atomic speeds in the meter per second range. The scheme we illustrate may open up avenues for optical isolation that were not previously accessible.
description: 5 pages, 4 figures
Exploring unconventional hubbard models with doubly modulated lattice gases
Creators: name: Greschner, Sebastian
name: Santos, Luis
name: Poletti, D.
Publisher: name: College Park, MD : American Physical Society
Year: 2014
Subjects: subject: Crystal lattices
subject: High temperature superconductors
subject: Hubbard model
subject: Modulation
subject: Optical lattices
subject: Correlated hopping
subject: Double modulation
subject: Insulating phasis
subject: Lattice gas
subject: Lattice models
subject: One-dimensional systems
subject: Parameter regimes
subject: Periodic modulation
subject: Computer simulation
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Recent experiments show that periodic modulations of cold atoms in optical lattices may be used to engineer and explore interesting models. We show that double modulation combining lattice shaking and modulated interactions allows for the engineering of a much broader class of lattice with correlated hopping, which we study for the particular case of one-dimensional systems. We show, in particular, that by using this double modulation it is possible to study Hubbard models with asymmetric hopping, which, contrary to the standard Hubbard model, present insulating phases with both parity and string order. Moreover, double modulation allows for the simulation of lattice models in unconventional parameter regimes, as we illustrate for the case of the spin-1/2 Fermi-Hubbard model with correlated hopping, a relevant model for cuprate superconductors. © 2014 American Physical Society.
LEVIS Project D7.1 Dissemination and Communication Plan
Creators: name: Steinbeis Europa Zentrum
Publisher: name: Zenodo
Year: 2022

description: The Communication and Dissemination Plan provides an overview of all communication and dissemination activities taking place and foreseen within work package (WP) 7 – “Dissemination & Exploitation”.

In this regard, it addresses the entire LEVIS consortium and provides a practical guideline about how to act and interact regarding the foreseen activities. Different target groups of the communication and dissemination activities (general public vs. scientific and technical audience) require different messages, “languages” (general, easily understandable information vs. technical language), channels and tools. These can be divided into project inherent tools (such as the project website, newsletter, social media channels etc.) and external tools to be used (such as scientific publications, external events etc.). The document describes the “Communication and Dissemination cascade” to be applied, also actively using the partner´s knowledge and experience as well as the partner´s communication channels.
Single photon-added coherent states: estimation of parameters and fidelity of the optical homodyne detection
Creators: name: Filippov, S. N.
name: Man'ko, V. I.
name: Coelho, A. S.
name: Zavatta, A.
name: Bellini, M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Travelling modes of single-photon-added coherent states (SPACS) are characterized via optical homodyne tomography. Given a set of experimentally measured quadrature distributions, we estimate parameters of the state and also extract information about the detector efficiency. The method used is a minimal distance estimation between theoretical and experimental quantities, which additionally allows to evaluate the precision of estimated parameters. Given experimental data, we also estimate the lower and upper bounds on fidelity. The results are believed to encourage preciser engineering and detection of SPACS.
description: 8 pages, 2 figures, based on the contribution to the 19th Central European Workshop on Quantum Optics (2-6 July 2012, Sinaia, Romania)
THE ROLE OF INSTITUTIONS TO REDUCE THE DEGRADATION OF MENTAL HEALTH IN MIGRANT AND REFUGEE POPULATION IN POST MIGRATION: THE CASE OF HORIZON ACADEMIC PARTICIPANTS IN UNIVERSITY OF GENEVA
Creators: name: DEMISSE, Daniel Tiruneh
Publisher: name: Zenodo
Year: 2024

description: This electronic poster was presented in Geneva Health Forum May, 2024. The poster is also a short summery of a thesis (qualitative study) presented and  submitted to global health institute as a fulfillment to my master in global health on February 2024. 

The paper covered the migrants and refugee population degradation of mental health in post migration and the role that institutions play to reduce this burden by selecting migrants and refugee who participated in horizon academic program in University of Geneva which works on integrating and helping these population to continue their interupted academic and professional journey.
Circumstellar disks during various evolutionary stages
Creators: name: Oudmaijer, Rene D.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Disks are ubiquitous in stellar astronomy, and play a crucial role in the formation and evolution of stars. In this contribution we present an overview of the most recent results, with emphasis on high spatial and spectral resolution. We will start with a general discussion on direct versus indirect detection of disks, and then traverse the HR diagram starting with the pre-Main Sequence and ending with evolved stars.
description: Review presented at the "Cicumstellar Dynamics at High Resolution" worskhop held in 2012. 12 pages, 2 figures