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Zinc Electrode Shape-Change in Secondary Air Batteries: A 2D Modeling Approach
[article]
2019
arXiv
pre-print
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Zinc-air batteries offer large specific energy densities, while relying on abundant and non-toxic materials. In this paper, we present the first multi-dimensional simulations of zinc-air batteries. We refine our existing theory-based model of secondary zinc-air systems. The model comprises thermodynamically consistent multi-species transport in alkaline electrolytes, formation and dissolution of metallic zinc and passivating zinc oxide, as well as multi-phase coexistence in gas diffusion
arXiv:1903.00382v1
fatcat:ragguixuuradhikkbtufkt5a4y
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... des. For the first time, we simulate zinc shape-change during battery cycling by modeling convection of zinc solids. We validate our model with in-situ tomography of commercial button cells. Two-dimensional volume-averaged simulations of cell voltage and zinc electrode morphology during discharge agree with these measurements. Thus, we can study how electrolyte carbonation limits shelf-life and how zinc shape-change limits cycle-life. The charging current is found to be the major contributor to cycle-life limitations. Finally, we optimize initial anode structure and charge-discharge protocols for improved performance and cycle-ability.
Religiöse Aspekte von Computerspielen
2003
Ludwigsburger Beiträge zur Medienpädagogik
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TOBIAS SCHMITT Bereits durch das frühe Alter von ca. 6-9 Jahren 7 , in dem vielen Kinder mit dem Computerspielen beginnen, dürfen meiner Ansicht nach die Einflüsse aber auch die Gefahren von religiösen ...
Schmitt
AUSGABE 3 / 2003
Black & White, dann stellt sich mir die Frage, ob
dies der religiösen Entwicklung der Kinder und
Jugendlichen 9 förderlich ist. ...
doi:10.21240/lbzm/03/06
fatcat:pbl3lhayh5abtlvjvj2orrxr5y
Text/Conference Paper
2019
Jahrestagung der Gesellschaft für Informatik
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Simon, Jana Dolan, Alexander Schmitt, Sven Pagel
Tobias Simon, Jana Dolan, Alexander Schmitt, Sven Pagel ...
(Diskussion M02, 00:11:09)
https://dillinger.io/ 3 Bisher nur als projektinterne Beta-Version verfügbar, eine Veröffentlichung wird angestrebt. 4 https://nodegoat.net/ 5 https://jupyter.org/ 110 Tobias ...
doi:10.18420/inf2019_ws11
dblp:conf/gi/SimonDSP19
fatcat:rk5dk5vztza5ppllxjbdslw3eq
Proposal of a Nonlinear Interaction of Person and Situation (NIPS) model
2013
Frontiers in Psychology
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They have also been demonstrated in other psychological domains such as justice judgment and behavior (Schmitt et al., 2003; Schmitt and Sabbagh, 2004) . ...
Synergy is one concept that might help generate substantive explanations for person × situation interactions (Schmitt et al., 2003) . ...
doi:10.3389/fpsyg.2013.00499
pmid:23935588
pmcid:PMC3731536
fatcat:3hw2pwewqrg2jjvwidujaq6xxy
Enhanced Dispatchability Of Aircrafts Using Multi-Static Configurations
2010
Zenodo
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This paper describes the reconfiguration strategy and mechanisms adopted in the Integrated Modular Avionics (IMA) based platform designed and evaluated in the scope of the European research and development project DIANA. The mechanisms aim at improving dispatchability of aircrafts while keeping a reasonable and limited impact on certification costs. The paper first introduces the concept of multi-static reconfiguration i.e., a set of pre-qualified configurations from which the active one will
doi:10.5281/zenodo.11414
fatcat:znbeo7tszzhxhc6e6ayiqs4wly
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... autonomously selected according to the system health state at system start-up. A configuration selection mechanism, exploiting a Byzantine Agreement algorithm, is discussed. Particular attention is paid to the proof of correctness of the adopted algorithm. Practical considerations concerning its implementation, like, for instance, the authentication protocol to be used are also considered. Finally, the implementation of the mechanism on top of an ARINC 653 Application Executive is briefly described.
Natural blue zircon from Vesuvius
2020
Mineralogy and Petrology
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Alexander Varychev and Jan Schmitt (Heidelberg University) are thanked for their assistance with the scanning electron microscope and the Raman microscope, and Axel Gerdes (Goethe University Frankfurt) ...
Oxygen isotopic compositions were analysed by SIMS following procedures in Schmitt et al. (2017) . ...
The plot combines 21 spot analyses on 20 different crystals where homogeneous, inclusion-free domains were preferentially targeted zircon from other alkaline magma systems (e.g., Eifel; Schmitt et al. ...
doi:10.1007/s00710-020-00727-7
fatcat:naxtowh3nvdjnp3ilgyckqi7ry
Inverse Reinforcement Learning with Simultaneous Estimation of Rewards and Dynamics
[article]
2016
arXiv
pre-print
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Inverse Reinforcement Learning (IRL) describes the problem of learning an unknown reward function of a Markov Decision Process (MDP) from observed behavior of an agent. Since the agent's behavior originates in its policy and MDP policies depend on both the stochastic system dynamics as well as the reward function, the solution of the inverse problem is significantly influenced by both. Current IRL approaches assume that if the transition model is unknown, additional samples from the system's
arXiv:1604.03912v1
fatcat:qcuf5rjl2bf4vcoipgtl5hv4xm
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... amics are accessible, or the observed behavior provides enough samples of the system's dynamics to solve the inverse problem accurately. These assumptions are often not satisfied. To overcome this, we present a gradient-based IRL approach that simultaneously estimates the system's dynamics. By solving the combined optimization problem, our approach takes into account the bias of the demonstrations, which stems from the generating policy. The evaluation on a synthetic MDP and a transfer learning task shows improvements regarding the sample efficiency as well as the accuracy of the estimated reward functions and transition models.
Attribute-based Explanations of Non-Linear Embeddings of High-Dimensional Data
[article]
2021
arXiv
pre-print
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Schmitt and H. Leitte are with the Visual Information Analysis group at TU Kaiserslautern. E-mail: leitte@cs.uni-kl.de. • F. Jirasek and H. ...
arXiv:2108.08706v1
fatcat:xx2twkef3zgdpdxav5ai7ffglq
What moderates implicit—explicit consistency?
2005
European Review of Social Psychology
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., Ajzen & Fishbein, 1977) and a search for psychological moderator variables that identify when attitudes or traits reliably predict behaviour (Ajzen, 1987; Bem & Allen, 1974; Block, 1977; Schmitt, ...
For example, differences in importance positively moderated implicit -explicit correspondence in a study on stereotyping (Hofmann, Gschwendner, & Schmitt, 2005b) and in two studies on voting attitudes ...
doi:10.1080/10463280500443228
fatcat:k26iqfrfz5csbadunjz64pxxyy
Guilt Experience in Patients with Obsessive-Compulsive Disorder
2019
Verhaltenstherapie (Basel)
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Verhaltenstherapie DOI: 10.1159/000503907
Geissner/Knechtl/Baumert/Rothmund/ Schmitt DOI: 10.1159/000503907 Verhaltenstherapie
4
Table 1 . 1 Obsessions-compulsions, depression, and guilt in OCD ...
doi:10.1159/000503907
fatcat:fifqmxk6j5bsblty3d7nnqvuwe
The Cost of Photovoltaic Forecasting Errors in Microgrid Control with Peak Pricing
2021
Energies
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Model predictive control (MPC) is widely used for microgrids or unit commitment due to its ability to respect the forecasts of loads and generation of renewable energies. However, while there are lots of approaches to accounting for uncertainties in these forecasts, their impact is rarely analyzed systematically. Here, we use a simplified linear state space model of a commercial building including a photovoltaic (PV) plant and real-world data from a 30 day period in 2020. PV predictions are
doi:10.3390/en14092569
fatcat:3r7qhsbjpfhltc7fmiahvrh43e
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... ved from weather forecasts and industry peak pricing is assumed. The effect of prediction accuracy on the resulting cost is evaluated by multiple simulations with different prediction errors and initial conditions. Analysis shows a mainly linear correlation, while the exact shape depends on the treatment of predictions at the current time step. Furthermore, despite a time horizon of 24h, only the prediction accuracy of the first 75min was relevant for the presented setting.
CASi – A Generic Context Awareness Simulator for Ambient Systems
[chapter]
2012
Lecture Notes in Computer Science
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In this paper, we present CASi (Context Awareness Simulator), a software system for the simulation of context-aware computer systems and environments. CASi provides an abstract framework of components for simulating smart world applications like a smart office or house with ambient sensors and actuators. Agents moving through these application worlds are tracked by sensors and their actions are influenced by actuators, both of which can be programmed to resemble the actual peripherals of the
doi:10.1007/978-3-642-34898-3_37
fatcat:llvuf6yah5bbzhqgktzyles5fa
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... ted system. CASi allows testing ambient, context aware computer systems even in early stages of development without the need for expensive prototyping or real world deployment.
A New Model to Ascertain Product Maturity in Product Development Processes
2016
Procedia CIRP
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Time, cost and quality are the three focused criteria in product development projects. While the factors time and costs can already be tracked very well during the entire course of a project through existing project management methods, the factor quality is by far more difficult to control. How mature the expected final product in the different development phases is, organizations seldom analyze systematically. Existing product maturity models and methods are mainly developed towards the needs
doi:10.1016/j.procir.2016.05.006
fatcat:rgxjnld42zatbpej5be6gno5qe
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... nd conditions of large companies within the automotive industry and therefore are found to be very complex and time-consuming to implement. This paper deals with the question to which extent existing quality methods are suited to monitor the product maturity during the development process of physical products. Based on established methods a new model is developed to calculate the product maturity during the development process with as less additional effort as possible. One characteristic value, which thereby highly influences the product maturity, is the uncertainty of the used decision data basis in terms of expert knowledge, technical simulation results or test results during the development process. The article ends with a practical validation of the new method, performed in an innovative, small and medium-sized company.
Individualised Proteogenomics Applied to Analysis of Amino Acid Variants in Malignant Melanoma
[article]
2020
bioRxiv
pre-print
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Nalpas N, Schmitt M, Macek B. Whole-exome sequencing (and nanopore RNA-seq) pipeline. ...
doi:10.1101/2020.12.15.422879
fatcat:jvxmhjczandf7d3vi5x7v3so6e
Acoustics of open fittings
2008
Journal of the Acoustical Society of America
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Acoustics 08 Paris 1259 The use of so-called "open fittings" instead of individual ear shells has become very popular in hearing aid fitting, in particular because open fittings avoid the occlusion effect, but also because they are more comfortable, easier to manufacture, and cosmetically preferred. On the other hand however, there are acoustical issues with open fittings, including the mixture of direct and amplified sound, a poor low-frequency performance, an increased risk of feedback and a
doi:10.1121/1.2932603
fatcat:77tzvi74inax7na36b7qxpec54
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... upposedly less reproducible position of the sound delivering device (tubing or speaker) in the ear canal, which in turn may result in a greater variability of acoustic parameters such as RECD and REOG. The two latter issues are addressed here in a study with 20 subjects, for individual shell and a number of open fittings, comprising closed and open domes of different diameters with tubings as well as with ear canal receivers. It was observed that in comparison to individual shell fittings, the open fittings did not exhibit a higher variability of RECD and REOG, but up to 15dB (closed domes) to 25dB (open domes) lower feedback thresholds.
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