cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Low power sensor node with photovoltaic power supply for radio-based process monitoring
Creators: name: Von Der Ahe, Christoph
name: Lüers, Bernard
name: Overmeyer, Ludger
name: Geck, Bernd
name: Fürtjes, Tobias
Publisher: name: Amsterdam : Elsevier B.V.
Year: 2018
Subjects: subject: 24 GHz RFID
subject: energy harvesting
subject: optical power supply
subject: process monitoring
subject: RF communication
subject: wireless sensor node
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik

description: This paper presents the idea of improving existing process monitoring systems for drilling, milling or threading by employing a novel communication technology as well as energy harvesting methods. An overview of the system including sensor node, energy supply and communication technology is given. The radio transmission methods are investigated in terms of power consumption in order to define requirements for the power supply. Fundamental measurements to characterize the behavior of different types of solar cells under artificial light are performed. Based on the results, two designs of sensor node prototypes are presented. The optical power supply and the energy harvesting system for the demonstrators are shown in detail.
Momentum in General Relativity: Local versus Quasilocal Conservation Laws
Creators: name: Epp, Richard J.
name: McGrath, Paul L.
name: Mann, Robert B.
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We construct a general relativistic conservation law for linear and angular momentum for matter and gravitational fields in a finite volume of space that does not rely on any spacetime symmetries. This work builds on our previous construction of a general relativistic energy conservation law with the same features. Our approach uses the Brown and York quasilocal stress-energy-momentum tensor for matter and gravitational fields, plus the concept of a rigid quasilocal frame (RQF) introduced in previous work. The RQF approach allows us to construct, in a generic spacetime, frames of reference whose boundaries are rigid (their shape and size do not change with time), and that have precisely the same six arbitrary time-dependent degrees of freedom as the accelerating and tumbling rigid frames we are familiar with in Newtonian mechanics. These RQFs, in turn, give rise to a completely general conservation law for the six components of momentum (three linear and three angular) of a finite system of matter and gravitational fields. We compare in detail this quasilocal RQF approach to constructing conservation laws with the usual local one based on spacetime symmetries, and discuss the shortcomings of the latter. These RQF conservation laws lead to a deeper understanding of physics in the form of simple, exact, operational definitions of gravitational energy and momentum fluxes, which in turn reveal, for the first time, the exact, detailed mechanisms of gravitational energy and momentum transfer taking place in a wide variety of physical phenomena, including a simple falling apple. As a concrete example, we derive a general relativistic version of Archimedes' law that we apply to understand electrostatic weight and buoyant force in the context of a Reissner-Nordstrom black hole.
description: 24 pages, 3 figures
Improved Foreground Detection via Block-based Classifier Cascade with Probabilistic Decision Integration
Creators: name: Reddy, Vikas
name: Sanderson, Conrad
name: Lovell, Brian C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences
subject: I.4.6; I.4.8; G.3; I.5.1; I.5.4

description: Background subtraction is a fundamental low-level processing task in numerous computer vision applications. The vast majority of algorithms process images on a pixel-by-pixel basis, where an independent decision is made for each pixel. A general limitation of such processing is that rich contextual information is not taken into account. We propose a block-based method capable of dealing with noise, illumination variations and dynamic backgrounds, while still obtaining smooth contours of foreground objects. Specifically, image sequences are analysed on an overlapping block-by-block basis. A low-dimensional texture descriptor obtained from each block is passed through an adaptive classifier cascade, where each stage handles a distinct problem. A probabilistic foreground mask generation approach then exploits block overlaps to integrate interim block-level decisions into final pixel-level foreground segmentation. Unlike many pixel-based methods, ad-hoc post-processing of foreground masks is not required. Experiments on the difficult Wallflower and I2R datasets show that the proposed approach obtains on average better results (both qualitatively and quantitatively) than several prominent methods. We furthermore propose the use of tracking performance as an unbiased approach for assessing the practical usefulness of foreground segmentation methods, and show that the proposed approach leads to considerable improvements in tracking accuracy on the CAVIAR dataset.
title: The computer control system of machine technologies of harvesting the rolled hay
Creators: name: Zykov, A.V.
Publisher: name: Scientific Research Centre "MachineStructure"
Year: 2019

description: The article discusses the structure and use of the system "Automation of calculations in the planning of work in crop production" allowing the agricultural enterprise to organize production much better, choose the most cost-effective units for each job and ultimately reduce labor and material costs per unit of work and unit products. In addition, the company gets the opportunity in advance to make an economic assessment of the manufactured nomenclature, determine the competitiveness of products and reduce production risk.
Schlecht vernetzt ist halb verloren. Marktplatz der Ideen
Creators: name: Harnisch, Sebastian
name: Schünemann, Wolf J.
Publisher: name: Ruperto Carola
Year: 2016

description: Mehr als die Hälfte aller Menschen hat keinen Zugang zum Internet – ein Umstand, der sich gravierend auf die wirtschaftliche Entwicklung auswirkt und zur Manifestation der weltweiten Ungleichheit beiträgt. Zunehmend zeigen sich aber auch immaterielle Folgen: das Ausbleiben transnationaler Kommunikation und Defizite bei der Beteiligung an internationalen Entscheidungsprozessen. Am Beispiel der politischen Online-Kommunikation über Soziale Medien erörtern wir die Folgen der digitalen Kluft zwischen den Gesellschaften.
description: Ruperto Carola, Nr. 8 (2016): Nord & Süd
title: Infrared method for drying vegetable raw materials
Creators: name: Zykov, A.V.
name: Zakharov, A.M.
name: Yunin, V.A.
Publisher: name: Scientific Research Centre "MachineStructure"
Year: 2019

description: The object of the study is the parameters and modes of intensive drying of ground high-moisture grass in an infrared way. The overall goal of the work is the development and improvement of progressive technological processes and experimental technical means for intensifying the drying of plant materials in a drum dryer, which can significantly accelerate the procurement rate of high-quality feed additives, improve its quality and reduce the energy and metal consumption of the drying process.
MPEC 2023-V253 : 2023 VC9
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 VC9

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Evaluation of Alternative Paths for Reliable Routing in City Logistics
Creators: name: Groß, Patrick-Oliver
name: Ehmke, Jan F.
name: Haas, Inbal
name: Mattfeld, Dirk C.
Publisher: name: Amsterdam : Elsevier B.V.
Year: 2017
Subjects: subject: alternative path
subject: city logistics
subject: reliability
subject: routing
subject: shortest path
subject: travel time information
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::380 | Handel, Kommunikation, Verkehr

description: Due to varying traffic volumes and limited traffic infrastructure in urban areas, travel times are uncertain and differ during the day. In this environment, city logistics service providers (CLSP) have to fulfill deliveries in a cost-efficient and reliable manner. To ensure cost-efficient routing while satisfying promised delivery dates, information on the expected travel times between customers needs to be considered appropriately. Typically, vehicle routing is based on information from shortest paths between customers, to determine the cost-minimal sequence of customer visits. This information is usually precomputed using shortest path algorithms. Most approaches merely consider a single (shortest) path, based on a single cost value (e.g., distance or average travel time). To incorporate information on travel time variation, it might be of value to consider alternative paths and more sophisticated travel time models such as Interval Travel Times (ITT). In this work, we investigate the incorporation of alternative paths into city logistics vehicle routing. For this purpose, we compare our approach to classical shortest path approaches within a vehicle routing problem. Our approach considers a set of alternative paths and incorporates ITT. Experiments are conducted within an exemplary city logistics setting. Computational results show that the consideration of alternative paths allows to select better paths with regard to a trade-off between efficiency and reliability when travel times are varying. © 2017 The Authors. Published by Elsevier B.V.
Suitability of nanodiamond NV centers for spontaneous emission control experiments
Creators: name: Mohtashami, Abbas
name: Koenderink, A. Femius
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: NV centers in diamond are generally recognized as highly promising as indefinitely stable highly efficient single-photon sources. We report an experimental quantification of the brightness, radiative decay rate, nonradiative decay rate and quantum efficiency of single NV centers in diamond nanocrystals. Our experiments show that the commonly observed large spread in fluorescence decay rates of NV centers in nanodiamond is inconsistent with the common explanation of large nanophotonic mode-density variations in the ultra-small high-index crystals at near-unity quantum efficiency. We report that NV centers in 25 nm nanocrystals are essentially insensitive to local density of states (LDOS) variations that we induce at a dielectric interface by using liquids to vary the refractive index, and propose that quantum efficiencies in such nanocrystals are widely distributed between 0% and 20%. For single NV centers in larger 100 nm nanocrystals, we show that decay rate changes can be reversibly induced by nanomechanically approaching a mirror to change the LDOS. Using this scanning mirror method, for the first time we report calibrated quantum efficiencies of NV centers, and show that different but nominally identical nanocrystals have widely distributed quantum efficiencies between 10% and 90%. Our measurements imply that nanocrystals that are to be assembled into hybrid photonic structures for cavity QED should first be individually screened to assess fluorescence properties in detail.
description: 27 pages, 6 figures
Fragaria collina Hoffm.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: M. collina Hoffm. (M. hispida Schlechtendal) Cat. 263. Bis etwa 2100 m. l: Ob Alesse (J.). - 2: Daillon (J.) - 3: Martigny (J., P.); Mont-Chemin (Closuit); Iserables (J.); Val d'Herens (Becherer); Stalden (Vispertal) (J.); Zermatt (J., Becherer), hohe Stelle: Theodulweg ob dem Hermättje, etwa 2100 m (Becherer 1945); Saastal (J.). - 4: Grengiols (Becherer und Zwicky).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
title: Investigation of the influence of heterogeneities in the form of stumps on the capillary moisture migration process in the forest road construction
Creators: name: Kolesnikov, G.N.
name: Gavrilov, T.A.
name: Stankevich, T.B.
name: Anpilogova, O.А.
Publisher: name: Scientific Research Centre "MachineStructure"
Year: 2019

description: The article is devoted to the problem of frosty heaving of forest roads. The question of the influence of heterogeneities in the form of stumps on the process of capillary moisture migration in the construction of a forest road is considered. The methodology and simulation results of this process are described taking into account the influence of heterogeneities.
Non-linear contour-based multidirectional intra coding
Creators: name: Laude, Thorsten
name: Tumbrägel, Jan
name: Munderloh, Marco
name: Ostermann, Jörn
Publisher: name: Cambridge : Cambridge University Press
Year: 2018
Subjects: subject: HEVC
subject: Image Coding
subject: Intra coding
subject: Prediction
subject: Video coding
subject: Codes (symbols)
subject: Forecasting
subject: Video signal processing
subject: Coding efficiency
subject: Contour modeling
subject: Directional extrapolations
subject: Intra coding algorithms
subject: Still image coding
subject: Video coding algorithm
subject: Image coding
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau
subject: Dewey Decimal Classification::000 | Allgemeines, Wissenschaft::000 | Informatik, Wissen, Systeme::004 | Informatik

description: Intra coding is an essential part of all video coding algorithms and applications. Additionally, intra coding algorithms are predestined for an efficient still image coding. To overcome limitations in existing intra coding algorithms (such as linear directional extrapolation, only one direction per block, small reference area), we propose non-linear Contour-based Multidirectional Intra Coding. This coding mode is based on four different non-linear contour models, on the connection of intersecting contours and on a boundary recall-based contour model selection algorithm. The different contour models address robustness against outliers for the detected contours and evasive curvature changes. Additionally, the information for the prediction is derived from already reconstructed pixels in neighboring blocks. The achieved coding efficiency is superior to those of related works from the literature. Compared with the closest related work, BD rate gains of 2.16% are achieved on average.
The cosmological information of shear peaks: beyond the abundance
Creators: name: Marian, Laura
name: Smith, Robert E.
name: Hilbert, Stefan
name: Schneider, Peter
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We study the cosmological information of weak lensing (WL) peaks, focusing on two other statistics besides their abundance: the stacked tangential-shear profiles and the peak-peak correlation function. We use a large ensemble of simulated WL maps with survey specifications relevant to future missions like Euclid and LSST, to explore the three peak probes. We find that the correlation function of peaks with high signal-to-noise (S/N) measured from fields of size 144 sq. deg. has a maximum of ~0.3 at an angular scale ~10 arcmin. For peaks with smaller S/N, the amplitude of the correlation function decreases, and its maximum occurs on smaller angular scales. We compare the peak observables measured with and without shape noise and find that for S/N~3 only ~5% of the peaks are due to large-scale structures, the rest being generated by shape noise. The covariance matrix of the probes is examined: the correlation function is only weakly covariant on scales < 30 arcmin, and slightly more on larger scales; the shear profiles are very correlated for theta > 2 arcmin, with a correlation coefficient as high as 0.7. Using the Fisher-matrix formalism, we compute the cosmological constraints for {Om_m, sig_8, w, n_s} considering each probe separately, as well as in combination. We find that the correlation function of peaks and shear profiles yield marginalized errors which are larger by a factor of 2-4 for {Om_m, sig_8} than the errors yielded by the peak abundance alone, while the errors for {w, n_s} are similar. By combining the three probes, the marginalized constraints are tightened by a factor of ~2 compared to the peak abundance alone, the least contributor to the error reduction being the correlation function. This work therefore recommends that future WL surveys use shear peaks beyond their abundance in order to constrain the cosmological model.
description: 15 pages, 10 figures, submitted to MNRAS
The Least Degraded and the Least Upgraded Channel with respect to a Channel Family
Creators: name: Liu, Wei
name: Hassani, S. Hamed
name: Urbanke, Ruediger
Publisher: name: arXiv
Year: 2013
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Given a family of binary-input memoryless output-symmetric (BMS) channels having a fixed capacity, we derive the BMS channel having the highest (resp. lowest) capacity among all channels that are degraded (resp. upgraded) with respect to the whole family. We give an explicit characterization of this channel as well as an explicit formula for the capacity of this channel.
description: Submitted to 2013 IEEE Information Theory Workshop
title: Investigation of the active safety of a car using multi-criteria assessment
Creators: name: Markovnina, A.I.
name: Makarov, V.S.
name: Belyakov, V.V.
name: Tsyganov, N.D.
Publisher: name: Scientific Research Centre "MachineStructure"
Year: 2019

description: Ensuring road safety is a paramount task to be solved by specialists in the field of automobile transport. It aims to increase the degree of protection of road users from traffic accidents, to reduce the degree of road traffic injuries and reduce the risk of mortality. With all the variety of possibilities for equipping cars with systems, there is a need to assess the feasibility and profitability of installing a particular package. In this case, it is necessary to turn to multicriteria assessment methods.
MPEC 2023-V254 : 2023 VD9
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 VD9

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Selecting Boron Fullerenes by Cage-Doping Mechanisms
Creators: name: Boulanger, Paul
name: Moriniere, Maxime
name: Genovese, Luigi
name: Pochet, Pascal
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: So far, no boron fullerenes were synthesized: more compact sp3-bonded clusters are energetically preferred. To circumvent this, metallic clusters have been suggested by Pochet et al. [Phys. Rev. B 83, 081403(R) (2011)] as "seeds" for a possible synthesis which would topologically protect the sp2 sector of the configuration space. In this paper, we identify a basic pentagonal unit which allows a balance between the release of strain and the self-doping rule. We formulate a guiding principle for the stability of boron fullerenes, which takes the form of an isolated filled pentagon rule (IFPR). The role of metallic clusters is then reexamined. It is shown that the interplay of the IFPR and the seed-induced doping breaks polymorphism and its related problems: it can effectively select between different isomers and reduce the reactivity of the boron shells. The balance between self and exterior doping represents the best strategy for boron buckyball synthesis.
description: 15 pages, 3 figures; submitted
Modeling and simulation aspects of AC machines
Creators: name: Popp, Michael
name: Laza, Patrick
name: Mathis, Wolfgang
Publisher: name: Warsaw : De Gruyter Open Ltd
Year: 2016
Subjects: subject: AC Machines
subject: MATLAB
subject: ODE and DAE Solvers
subject: State Space Modeling
subject: Differential equations
subject: Equations of state
subject: Ordinary differential equations
subject: State space methods
subject: AC machine
subject: Algebraic constraints
subject: Efficient simulation
subject: Model and simulation
subject: State - space models
subject: State space representation
subject: Dewey Decimal Classification::600 | Technik

description: In the field of power and drive systems, electrical AC machines are mostly modeled using a set of explicit ordinary differential equations in a state space representation. It is shown, that by using other equation types for simulation, algebraic constraints arising from aggregating several machines to a more complex system can directly be considered. The effects of different model variants on numerical ODE/DAE solvers are investigated in the focus of this work in order perform efficient simulations of larger systems possessing electrical AC machines.
The rth Smallest Part Size of a Random Integer Partition
Creators: name: Gao, Zhicheng
name: Martinez, Conrado
name: Panario, Daniel
name: Richmond, Bruce
Publisher: name: Zenodo
Year: 2014

description: We study the size of the rth smallest part and the rth smallest distinct part in a random integer partition. This extends the research on partitions with no small parts of Nicolas and Sáközy.
title: Energy-saving aspects of powerful adjustable asynchronous cascade electric drives
Creators: name: Matveev, Yu.V.
Publisher: name: Scientific Research Centre "MachineStructure"
Year: 2019

description: Energy saving is an important part in the implementation and use of adjustable electric drives large. One of the ways to save energy in asynchronous electric drives is the use of sliding energy. The types and characteristics of cascade circuits of high-power asynchronous electric drives are considered.
Experimental investigation of low-frequency pulsed Lorentz force influence on the motion of Galinstan melt
Creators: name: Musaeva, Diana
name: Ilyin, Vladimir K.
name: Geža, Vadims
name: Baake, Egbert
Publisher: name: Amsterdam : Elsevier B.V.
Year: 2016
Subjects: subject: Low frequency
subject: Physics
subject: Lorentz force
subject: Doppler effect
subject: Melt flow index
subject: Eutectic system
subject: Turbulence
subject: Galinstan
subject: Electromagnetic field
subject: Nuclear magnetic resonance
subject: Classical mechanics
subject: Dewey Decimal Classification::500 | Naturwissenschaften::510 | Mathematik
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: The paper presents the results of the numerical and physical experiments, aimed at assessing the influence of pulsed force of electromagnetic field on the melt motion and the fluid velocities. The experiment was performed on the eutectic alloy Galinstan in the cylindrical volume, where an ultrasonic Doppler velocimeter was employed for velocity measurements under conditions of pulsed and steady EM field application. A numerical simulation of the melt flow, forced by the steady EM force, involved a 2D axisymmetric model. The k -e turbulence model was used to obtain the information about the melt velocities. The verification of the numerical model was carried out for the steady case. The effects of pulsed and steadily applied Lorentz force were compared using the physical experiment. An intensity of the velocity pulsations in Galinstan for the pulsed frequencies in the range from 0.05 to 1 Hz considerably exceeded the values measured in the permanently stirred melt. For higher values of pulsed frequencies (from 1 to 10 Hz) the effect decreases and only slightly differs from the influence of the permanently applied Lorentz force.
title: Method for preparing concentrated feed
Creators: name: Zykov, A.V.
name: Perekopskiy, A.N.
name: Zakharov, A.M.
Publisher: name: Scientific Research Centre "MachineStructure"
Year: 2019

description: An urgent problem of feed production is the preservation of the nutritional value of feed. The main disadvantage of feed preparation in a polyethylene sleeve is the constant extraction of feed and opening of the sleeve, which leads to contact of the feed with the atmosphere and a partial decrease in its quality. A new method is proposed, it will allow to avoid the above-mentioned disadvantages due to the use of containers when laying for storage.
title: Analysis of fuel consumption by machine-tractor units
Creators: name: Gafurov, V.D.
name: Zinatullin, V.V.
name: Abdrazakov, F.G.
name: Kabirov, A.
Publisher: name: Scientific Research Centre "MachineStructure"
Year: 2019

description: The article analyzes the experimental results of rationing fuel consumption over the treated area, and using satellite-based monitoring of operating time. The most optimal modes have been identified for controlling fuel use at agricultural enterprises.
A Wrapper of PCI Express with FIFO Interfaces based on FPGA
Creators: name: Li, Hu
name: Liu, Yuan`an
name: Yuan, Dongming
name: Hu, Hefei
Publisher: name: arXiv
Year: 2013
Subjects: subject: Hardware Architecture (cs.AR)
subject: FOS: Computer and information sciences

description: This paper proposes a PCI Express (PCIE) Wrapper core named PWrapper with FIFO interfaces. Compared with other PCIE solutions, PWrapper has several advantages such as flexibility, isolation of clock domain, etc. PWrapper is implemented and verified on Vertex -5-FX70T which is a development board provided by Xilinx Inc. Architecture of PWrapper and design of two key modules are illustrated, which timing optimization methods have been adopted. Then we explained the advantages and challenges of on-chip interfaces technology based on FIFOs. The verification results show that PWrapper can achieve the speed of 1.8Gbps (Giga bits per second).
description: 5 pages, 8 figures
Dynamic heterogeneities above and below the mode-coupling temperature. Evidence of a dynamic crossover
Creators: name: Flenner, Elijah
name: Szamel, Grzegorz
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We examine dynamic heterogeneities in a model glass-forming fluid, a binary harmonic sphere mixture, above and below the mode-coupling temperature T_c. We calculate the ensemble independent susceptibility chi_4(tau_alpha) and the dynamic correlation length xi_4(tau_alpha) at the alpha-relaxation time tau_alpha. We also examine in detail the temperature dependence of tau_alpha and the diffusion coefficient D. For higher temperatures we find that the standard Stokes-Einstein relationship, D ~ tau_alpha^{-1}, holds, but at lower temperatures a fractional Stokes-Einstein relationship, D ~ tau_alpha^{-sigma} with sigma = 0.65, emerges. By examining the relationships between tau_alpha, D, chi_4(tau_alpha), and xi_4(tau_alpha) we determine that the emergence of the fractional Stokes-Einstein relationship is accompanied by a dynamic crossover from tau_alpha ~ e^{k_2 xi_4} at higher temperatures to tau_alpha ~ e^{k_1 xi_4^{3/2}} at lower temperatures.
description: To appear in J. Chem. Phys. "Special Topic Issue on the Glass Transition"
Non-Invasive Online Monitoring of Cell Growth in Disposable Bioreactors with a Planar Coil
Creators: name: Reinecke, T.
name: Biechele, P.
name: Frickhöffer, M.
name: Scheper, T.
name: Zimmermann, S.
Publisher: name: Amsterdam : Elsevier
Year: 2016
Subjects: subject: cell growth monitoring
subject: single use bioreactor
subject: inductive permittivity measurements
subject: dielectric spectroscopy
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: To ensure high quality output of biotechnological processes, relevant process parameters need to be monitored. As bioprocesses are increasingly executed in single use bioreactors, there is an increasing demand for new sensors applicable to these processes. In this work, we present a low-cost sensor system for continuous non-invasive cell growth monitoring, especially for single use bioreactor applications. The system consists of a planar coil connected to a low cost network analyzer. The coil is attached to the outside of the polymer foil of the single use bioreactor and an impedance spectrum is measured. To evaluate the sensor, E. coli cultivations are performed in a modified cultivation setup, which enables measurements through the polymer foil of a Sartorius BIOSTAT® CultiBag RM, and additionally allows sampling of culture medium for optical density reference measurements. The resonance peak of the coil in the impedance spectrum, is observed as measure for the optical density. Regardless of the simple sensor construction, we found a good correlation between optical density and the damping ratio of the resonance peak.
Self-induced THz-waves transmissivity of waveguides with finite-length layered superconductors
Creators: name: Rokhmanova, T. N.
name: Apostolov, S. S.
name: Maizelis, Z. A.
name: Yampol'skii, V. A.
name: Nori, Franco
Publisher: name: arXiv
Year: 2013
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We predict and study theoretically a new nonlinear electromagnetic phenomenon in a sample of layered superconductor of finite length placed in a waveguide with ideal walls. Two geometries are considered here: when the superconducting layers are parallel or perpendicular to the waveguide axis. We show that the transmittance of the superconductor slab can vary over a wide range, from nearly zero to one, when changing the amplitude of the incident wave. Thus, one can induce the total transmission or reflection of the incident wave by just changing its amplitude. Moreover, the dependence of the superconductor transmittance on the incident wave amplitude has a hysteretic behavior with jumps. The considered phenomenon of self-induced transparency can be observed even at small amplitudes, if the wave frequency $ω$ is close to the cutoff frequency for linear Josephson plasma waves.
description: 27 pages, 11 figures, submitted to PRB
Fundamental consideration of junction formation strategies for phosphorus-doped emitters with J0e < 10 fA/cm2
Creators: name: Min, Byungsul
name: Krügener, Jan
name: Müller, Matthias
name: Bothe, Karsten
name: Brendel, Rolf
Publisher: name: London : Elsevier Ltd.
Year: 2017
Subjects: subject: emitter
subject: junction formation
subject: passivation
subject: recombination
subject: Doping (additives)
subject: Passivation
subject: Silicon
subject: Silicon solar cells
subject: Electrically actives
subject: Junction formation
subject: Phosphorus concentration
subject: Saturation current densities
subject: Surface passivation
subject: Surface recombination velocities
subject: Phosphorus
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::330 | Wirtschaft::333 | Boden- und Energiewirtschaft::333,7 | Natürliche Ressourcen, Energie und Umwelt

description: This work shows the potential of further optimization of phosphorus-doped emitters in p-type silicon solar cells. We investigate the impact of different combinations of phosphorus doping profiles and surface passivation qualities on the saturation current density J0e by considering boundary conditions based on published experimental data. Our simulation study shows that there are two possible ways to achieve J0e values below 10 fA/cm2. One is the reduction of the electrically active phosphorus concentration nsurf at the surface beneath 2×1019 cm-3 and simultaneously reducing the surface recombination velocity Sp to below 103 cm/s. The other contrarily increases nsurf to values of up to 1×1021 cm-3 while ensuring full activation of all phosphorus dopants. In the latter case, J0e values below 10 fA/cm2 seem possible, even for Sp = 107 cm/s which is equal to the thermal velocity.
The rise and fall of the Phytophthora infestans lineage that triggered the Irish potato famine
Creators: name: Yoshida, Kentaro
name: Schuenemann, Verena J.
name: Cano, Liliana M.
name: Pais, Marina
name: Mishra, Bagdevi
name: Sharma, Rahul
name: Lanz, Christa
name: Martin, Frank N.
name: Kamoun, Sophien
name: Krause, Johannes
name: Thines, Marco
name: Weigel, Detlef
name: Burbano, Hernán A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Genomics (q-bio.GN)
subject: FOS: Biological sciences

description: Phytophthora infestans, the cause of potato late blight, is infamous for having triggered the Irish Great Famine in the 1840s. Until the late 1970s, P. infestans diversity outside of its Mexican center of origin was low, and one scenario held that a single strain, US-1, had dominated the global population for 150 years; this was later challenged based on DNA analysis of historical herbarium specimens. We have compared the genomes of 11 herbarium and 15 modern strains. We conclude that the nineteenth century epidemic was caused by a unique genotype, HERB-1, that persisted for over 50 years. HERB-1 is distinct from all examined modern strains, but it is a close relative of US-1, which replaced it outside of Mexico in the twentieth century. We propose that HERB-1 and US-1 emerged from a metapopulation that was established in the early 1800s outside of the species' center of diversity.
description: To be published in eLIFE
neighbor of Gonoa:
Creators: name: Musch, Tilman
Publisher: name: Journal of Global Archaeology
Year: 2023

description: This article presents the rock art site of Bunige in northern Tibesti (Republic of Chad). Bunige is located barely ten kilometers from the rock art site of Gonoa and, except for a short mention in a French article from 1966, does not seem to have been explored in any detail. In addition to engravings of cattle, wild animals, and round devices, there is an almost man-sized depiction of an archer. Such large depictions of humans are very rare in the Tibesti, which makes this ‘Man of Bunige’ in close proximity to the famous ‘Man of Gonoa’ all the more significant. For this reason, the present article describes the rock art site of Bunige in detail. Assuming that the ‘Man of Bunige’ represents a hunter, particular attention will be payed to representations of game and traps at this site. In fact, Bunige, due to its abundance of water, may have attracted wild animals and therefore may have been of particular interest to hunters.
description: Journal of Global Archaeology, 2023
Energy-efficient Drive Concepts in Metal-forming Production
Creators: name: Behrens, Bernd-Arno
name: Bouguecha, Anas
name: Krimm, Richard
name: Teichrib, Sergej
name: Nitschke, Thomas
Publisher: name: Amsterdam : Elsevier
Year: 2016
Subjects: subject: energy efficiency
subject: metal forming
subject: servo press
subject: sheet metal feeder
subject: Feeding
subject: Metal forming
subject: Metals
subject: Presses (machine tools)
subject: Sheet metal
subject: Electrically conductive
subject: Electromagnetic forces
subject: Energy efficient
subject: Feeding rate
subject: Feeding system
subject: New energies
subject: Production industries
subject: Servo press
subject: Energy efficiency
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Nowadays, efficient drive solutions for the production industry are more important than ever. In view of this, new energy-efficient drive concepts for forming presses and sheet metal feeding systems are developed at the IFUM. The novel press drive is based on a power-split design, which allows a variable ram-kinematics with reduced total costs of ownership in comparison to conventional servo presses. The new feeding concept will be able to realize the contactless feed of electrically conductive sheet metals by means of electromagnetic forces. Since only the sheet metal has to be accelerated, the energy efficiency and feeding rate can be increased significantly.
Unidentified
Creators: name: (:Unav)
Publisher: name: Columbia University
Year: 2020
Subjects: Antisemitism
Anti-Jewish propaganda
Conspiracy theories
Right-wing extremists
Illuminati
Apartheid
Race discrimination
Black power

description: A series of audio clips: Phil Ochs “Draft Dodger Rag”; unidentified speaker railing against public education, the Illuminati, Jews, and others; unidentified Black Power speaker; unidentified speaker about Edward Kennedy’s accident; unidentified pro-apartheid speaker about press bias; unidentified speaker.
V Tabellen: Editionsvergleiche und Auswertung
Creators: name: Lang, Catherine
name: Straßburger, Kevin
name: Lemser, Marie
name: Blascheck, Sebastian
name: Klang, Markus
name: Schubert, Charlotte
name: Willkommen, Corinna
Publisher: name: Working Papers Contested Order/ eAQUA Working Papers
Year: 2013

description: Working Papers Contested Order/ eAQUA Working Papers, Bd. 7 (2012): Working Papers Contested Order: Das Portal eAQUA – Neue Methoden in der geisteswissenschaftlichen Forschung III
Towards consistent extension of quasidilaton massive gravity
Creators: name: De Felice, Antonio
name: Mukohyama, Shinji
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present the first example of a unitary theory of Lorentz-invariant massive gravity, with all degrees of freedom propagating on a strictly homogeneous and isotropic, self-accelerating de Sitter background. The theory is a simple extension of the quasidilaton theory, respecting the symmetry of the original theory but allowing for a new type of coupling between the massive graviton and the quasidilaton scalar.
description: 4 pages
Low-loss high-speed speckle reduction using a colloidal dispersion
Creators: name: Redding, Brandon
name: Allen, Graham
name: Dufresne, Eric R.
name: Cao, Hui
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We present a simple and robust approach to reduce laser speckle, which has limited the adoption of lasers in imaging and display applications. We use colloidal solutions that can quickly reduce speckle contrast due to the Brownian motion of the scattering particles. The high insertion loss associated with propagation through a colloidal solution was overcome by using white paint to cover the sides of the cuvette and an optical fiber to deliver the laser light deep into the colloidal solution, enabling transmission greater than 90%. The diffused laser output followed a Lambertian distribution and produced speckle contrast below 4% at an integration time of 129 μs. The ability for colloidal solutions to achieve fast speckle reduction without power consumption while maintaining high transmission, low cost, a compact size, and a long lifetime, makes our approach useful for a wide range of laser imaging and projection applications.
description: 4 pages; 3 figures
Influence of Machining Parameters on Heat Generation during Milling of Aluminum Alloys
Creators: name: Denkena, Berend
name: Brüning, J.
name: Niederwestberg, D.
name: Grabowski, R.
Publisher: name: Amsterdam : Elsevier
Year: 2016
Subjects: subject: milling
subject: process damping
subject: simulation
subject: thermal behaviour
subject: Cutting tools
subject: Damping
subject: Milling (machining)
subject: Thin walled structures
subject: Local overheating
subject: Machining parameters
subject: Process damping
subject: Process parameters
subject: Thermal behaviours
subject: Thin walled components
subject: Unstable process
subject: Aluminum alloys
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Thin-walled components, i.e. fuselage frames of airplanes, are prone to an unstable process behavior during milling. Therefore, tools with a chamfer between the cutting edge and the flank face are often used for such machining tasks. During milling, the chamfered area comes into contact with the just cut surface. This contact leads to process damping forces and the induced heat into the workpiece in this contact zone is increased. Furthermore, the amount of induced heat depends on the process parameters. At certain spots on the machined surface this may lead to a local overheating, which can reduce stiffness significantly. When this occurs during milling of a thin-walled component, the component is often regarded as reject. In this paper, the influence of chamfers and process parameters on the induced heat into the workpiece is investigated experimentally. In addition, a simulation which predict the temperature in the workpiece in dependence of the process parameters is presented.
Lithospermum purpureo-coeruleum L.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: L. purpureo-coeruleum L. Cat. 263. Unterwallis und vereinzelt das Rhonetal aufwärts bis über Siders. 2: Tal der Lizerne beim Maiensäss Madouc, 1220m (Furrer); ob Salgesch am Wegnach Miege (Thommen).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
FTS-based face milling of micro structures
Creators: name: Köhler, Jens
name: Seibel, A.
Publisher: name: Amsterdam : Elsevier
Year: 2015
Subjects: subject: Face milling
subject: Fast tool servo
subject: FTS
subject: Gentelligent
subject: Micro machining
subject: Micro structures
subject: Milling
subject: Engineering research
subject: Micromachining
subject: Production
subject: Quality control
subject: Social networking (online)
subject: World Wide Web
subject: Conventional millings
subject: Excitation signals
subject: Spindle position
subject: Variable frequencies
subject: Milling (machining)
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: This article presents a technical concept and machining possibilities for milling of micro structures with a fast tool servo (FTS). The tool is capable of tool tip displacements with a variable frequency up to 4000 Hz and an amplitude up to 30 μm. The control system of the actuator is linked to the angular spindle position, allowing to freely manipulate the excitation signal. Combining this tool system with a single tooth face milling head, micro structures on flat surfaces can be generated on conventional milling centers. Selected micro structures are machined and evaluated in terms of precision and surface quality.
III.3 Untersuchungen mit dem Citationsgraphen von eAQUA zur Kimonvita des Plutarch
Creators: name: Lemser, Marie
Publisher: name: Working Papers Contested Order/ eAQUA Working Papers
Year: 2014

description: Working Papers Contested Order/ eAQUA Working Papers, Bd. 7 (2012): Working Papers Contested Order: Das Portal eAQUA – Neue Methoden in der geisteswissenschaftlichen Forschung III
Flexible and Low-cost Production of Waveguide Based Integrated Photonic Devices
Creators: name: Rahlves, Maik
Publisher: name: Amsterdam : Elsevier
Year: 2016
Subjects: subject: Integrated photonics
subject: maskless lithography
subject: waveguides
subject: polymer photonics
subject: hot embossing
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik

description: We present a process to fabricate fully polymer based integrated optical devices which is based on maskless lithography and hot embossing. Using the maskless lithographic setup, we are able to create a hot embossing stamp in a flexible and fast manner. We demonstrate that our process is capable of creating linear optical waveguides, Y-splitters and Mach-Zehnder interferometers designed by preliminary optical simulations. The fabricated structures are analyzed with respect to optical smoothness and line edge roughness. In the future, our process will greatly enhance a fast design and fabrication of complex optical sensor structures.
Semiconvection: theory
Creators: name: Spruit, H. C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: A model is developed for the transport of heat and solute in a system of double-diffusive layers under astrophysical conditions (viscosity and solute diffusivity low compared with the thermal diffusivity). The process of formation of the layers is not part of the model but, as observed in geophysical and laboratory settings, is assumed to be fast compared to the life time of the semiconvective zone. The thickness of the layers is \tbf{a} free parameter of the model. When the energy flux of the star is specified, the effective semiconvective diffusivities are only weakly dependent on this parameter. An estimate is given of the evolution of layer thickness with time in a semiconvective zone. The model predicts that the density ratio has a maximum for which a stationary layered state can exist, $R_ρ\la \mr{Le}^{-1/2}$. Comparison of the model predictions with a grid of numerical simulations is presented in a companion paper.
description: Accepted for publication in Astronomy & Astrophysics
Auswertung De malignitate Herodoti
Creators: name: Schubert, Charlotte
name: Willkommen, Corinna
Publisher: name: Working Papers Contested Order/ eAQUA Working Papers
Year: 2014

description: Working Papers Contested Order/ eAQUA Working Papers, Bd. 7 (2012): Working Papers Contested Order: Das Portal eAQUA – Neue Methoden in der geisteswissenschaftlichen Forschung III
Inherent Load Measurement and Component Identification by multi-dimensional Coded Data in the Component's Subsurface Region
Creators: name: Barton, Sebastian
name: Mroz, Gregor
name: Reimche, Wilfried
name: Maier, Hans Jürgen
Publisher: name: Amsterdam : Elsevier
Year: 2016
Subjects: subject: Subsurface Modification
subject: Heat Treatment
subject: Piracy Protection
subject: Load Sensor
subject: Load History
subject: Eddy-Current-Technolgy
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik

description: In industrial production, the absence of component markings and unrecognized component failure can result in a lack of protection against product piracy and malfunctions of machinery and installations. A technique for storing data inherently in the subsurface region of the component was developed. Inherently stored data is highly resistant to external stresses and inseparably linked to the component. To evaluate the integrity of highly stressed components, material inherent sensors are induced in the subsurface region of the component to store the loading history. These techniques offer the potential for securely identifying and evaluating the status of components, and thus reducing failure costs.