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Lars Radtke - A partitioned solution approach for fluid-structure interaction problems in the arterial system

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Lars Radtke

A partitioned solution approach for fluid-structure interaction problems in the arterial system

Series: Mechanik/Bruchmechanik

Volume 353 2020

Results in this title

Numerical investigations S. 153-219

„… direction (two in the quarter model considered here) yields a suitable element size. A reference solution …” „… considered first. As a reference, the St. Venant- Kirchhoff model is considered as well. As usual when …” „… [82] is taken as a reference. Material parameters for the HGO model are provided there, but they were …”

Mechanical modeling of the arterial system S. 23-68

„… obtained for blood. Model η0 (mPa s) η∞ (mPa s) k (Pa s n− 1) n (-) τ0 (mPa) Reference Newtonian – 4.08 …” „… Mechanical modeling of the arterial system Bird-Carreau model The Bird-Carreau (BC) model goes back to [36 …” „… pressure of each model, one finds that Qw 2c. = pw R + C dpw dt (3.170) 61 3 Mechanical modeling of the …”

Summary and Outlook S. 253-256

„… modeling approach for cardiovascular FSI studies is available, the idealized models used in this work may …” „… models of the surrounding are used to provide realistic boundary conditions to the fully resolved FSI …” „… 253 7 Summary and Outlook solution approach for the augmented problem including the reduced models was …”

Fluid-structure interaction in the arterial system S. 6-22

„… Computational modeling cial techniques for this coupling of one- and three-dimensional models are proposed in …” „… material model. Which type of material model is suitable may be decided based on the microstructure or …” „… level of detail. To describe larger scale parts of the system, reduced models, e.g. one-dimensional …”

Applications S. 220-252

„… compare the influence of different modeling aspects and to provide a reference in terms of clinical …” „… demonstrating the usage of the partitioned solution approach this provides references for a later investigation …” „… enforced by prescribing a temporally varying Poisseuille velocity profile. A three element windkessel model …”

Introduction S. 1-5

„… modeling approaches, which demands for a combination of three-dimensional and reduced models as illustrated …” „… using reduced models. Figure 1.1 illustrates the different fields or subproblems governing the resulting …” „… methods. To begin with, this is done from a phenomenological viewpoint, i.e. without any reference to a …”

Numerical methods S. 69-152

„… 4 Numerical methods In the previous chapter, several models were proposed for the investigation of …” „… of the models have to be solved approximately using numerical methods. In general, the unknown state …” „… variables of each model will be approximated using a finite number of unknowns. The state of each …”

Bibliography S. 269-288

„… blood flow in a stenosed artery using two rheological models”. In: Thermal Science 20.2 (2016), pp …” „… ] G. P. Bonneau and S. Hahmann. “Flexible G1 interpolation of quad meshes”. In: Graphical Models 76.6 …” „… formation in a model abdominal aorta”. In: Journal of Biomechanics 36.8 (2003), pp. 1185– 1196. [31] H. J …”

doi.org/10.51202/9783186353184

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VDI Wissensforum GmbH (ed.)

AUTOREG 2017

Series: VDI-Berichte

Volume 2292 2017

Results in this title

Q. Wang, S. Müller A path planning controller for unsignalized intersection based on model predictive control and potential field method S. 299-308

„… reference vehicle positions Xref and Yref in global coordinates. In the path replanning level, a model …” „… on model predictive control is designed. 4.1 Modeling Due to the simplicity and less computational …” „… A path planning controller for unsignalized intersection based on model predictive control and …”

P. Bolia, S. Müller Numerical Modelling of the Human Driver for lateral closed-loop steering maneuvers S. 551-560

„… Model-Based Design of Mechatronic Steering Systems. 12th Stuttgart International Symposium, Automotive and …” „… human driver steering behavior in the first place. As a result, it is important to model the steering …” „… . Firstly, a vehicle lateral state space model is derived in road coordinate state space. With the help of …”

S. Gantenbein, M. Weiss, E. Ivers-Tiffée Elektrochemische Charakterisierung und physikalische Modellierung von Lithium-Ionen Batterien S. 157-170

„… by a transmission line model behavior, which is explained in detail in [24], but can be modelled by …” „… a RQ element, as well. 2.3.2.4 Equivalent circuit modeling The proposed equivalent circuit model …” „… This work aims at the development of a battery model, which simulates the operating voltage Uop of a …”

B. C. Heinrich, D. Fassbender, H.-J. Wuensche Autonomous Cooperative Multi-Convoy Control for Off-Road-Scenarios S. 365-376

„… velocity difference. In other words, we use the predicted state as reference and correct model errors with …” „… reference to a classic adaptive cruise control (ACC): vi,des = vi−1 + kv∆v + kd∆di , where kv and kd are …” „… tuning factors. A strength of this approach is that, having future states as reference, we are able to …”

M. Grotjahn, B. Luck, M. Feldt Nichtlineare adaptive Regelung und Störkraftkompensation für elektrische Gaspfadaktoren S. 337-352

„… forwarding in section 4. 2.1 Modelling of electrical gas path actuators The overall model consists of an …” „… can be modelled as a function only of joint velocities. A widespread detailed model is the friction …” „… Steuerungssysteme für automobile Antriebe. Berlin, 2014 [LuGr15] LUCK, BENNET ; GROTJAHN, MARTIN: Model-based …”

T. Raste, A. Tarraf Flachheitsbasierte Trajektoriengenerierung und Folgeregelung mit modellprädiktiver und modellfreier Regelung S. 319-324

„… Universität, Heidelberg, 2006. [10] Fliess, M.; Join, C.: Model-free control. arXiv:1305.7085v2 [math.OC …” „… Flachheit, Modellprädiktive Regelung, Modellfreie Regelung. 1 Einleitung Die Bewegungssteuerung für das …” „… . 5 Modellfreie Fahrzeugregelung 5.1 Lokales Modell mit unbekannter Systemdynamik Die nichtlineare …”

M. Behle, A.-M. Meyer New methods for control algorithm design S. 475-478

„… details they are not interested in (hierarchies, references, etc.) and on the other hand, models are not …”

D. Frerichs, M. Borsdorf, K. M. Hahn FMI in der Simulation von Fahrdynamikregelsystemen S. 415-424

„… realisiert und mit Hilfe der FMI Toolbox 2.3.1. von Modelon in eine FMU für Model Exchange (ME) und …” „… Master-Model Ansatz, werden bei der FMU Parameter und Modellstruktur voneinander getrennt betrachtet. Neben …” „… Exchange of Simulation Models. Modelica Konferenz 2011 [4] Otte, M. u. Elmqvist H.: Modelica. Language …”

M. Harr, C. Schäfer Robust Odometry Estimation for Automated Driving and Map Data Collection S. 91-102

„… known as NIS-Test. An algorithm for combining multiple models is presented in [4]. However, correlations …” „… not be checked. An algorithm for switching between models depending on the driving situation is …” „… kinematic single-track-model [9] with small angle approximation θ and calibrated yaw rate. ψ̇ = 1 l f + lr …”

K. Abdelgawad, S. Henning, P. Biemelt, S. Gausemeier, A. Trächter Networked Driving Simulation for Future Autonomous and Cooperative Vehicle Systems – Development of a Modular Platform for Networked Driving Simulation Based on High-Level Architecture S. 539-550

„… . A simulation model of an autonomous driving system was utilized and a group of test persons was …” „… aspects is provided in the corresponding references. 3.1. Central station The central station is a …” „… through this RTI ambassador. Through publishsubscribe models within the RTI ambassadors, programs of …”

E. D. Dickmanns Entwicklung des Gesichtssinns für automatisiertes Fahren – Der 4-D Ansatz brachte 1987 den Durchbruch S. 5-20

„… -D-Dynamic Scene Analysis with Integral Spatio-Temporal Models. 4th International Symposium on Robotics …” „… ) Siedersberger K.-H., DED: EMS-Vision: Enhanced Abilities for Locomotion. [19] Albus J.S.: 4-D/RCS reference …” „… model architecture for unmanned ground vehicles. Proc. of the International Conference on Robotics and …”

doi.org/10.51202/9783181022924

VDI Wissensforum GmbH - Messunsicherheit praxisgerecht bestimmen – Prüfprozesse in der industriellen Praxis 2023

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VDI Wissensforum GmbH (ed.)

Messunsicherheit praxisgerecht bestimmen – Prüfprozesse in der industriellen Praxis 2023

Series: VDI-Berichte

Volume 2428 2023

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J. Staněk, S. Král, L. Fusková Estimation of Measurement Uncertainty Through – Comparative Measurements with Variable Measured Object S. 295-310

„… distinction between the scrutinized measurement and its reference counterpart. 2 Assumed Model In our …” „… fluctuations induced by the object's variability. A comprehensive model is introduced, incorporating parameters …” „… for two devices involved in the measurement process. The reference device adds a known error to …”

S. Eichstädt, O. Werhahn Messunsicherheit und metrologische Rückführbarkeit für Sensornetzwerke zur Überwachung der Luftqualität S. 173-192

„… follows on practical applications in real world scenarios aside from model uncertainties discussed in …” „… can be related to a reference through a documented unbroken chain of calibrations, each contributing …” „… digital reference points“ als maschinenlesbare, persistente Darstellungen des internationalen …”

M. Ohlrogge Chancen und Möglichkeiten von KI im Bereich der Messdatenanalyse S. 319-328

„… VDI-Berichte Nr. 2428, 2023320process and uses a simple example to show how reference deviations can be …” „… . Trends wurde durch die Firma Icon Pro auf Basis dieser Messwerte ein Modell des maschinellen Lernens mit …”

doi.org/10.51202/9783181024287

VDI Wissensforum GmbH - Fahrzeugsicherheit

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VDI Wissensforum GmbH (ed.)

Fahrzeugsicherheit

Series: VDI-Berichte

Volume 2426 2023

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A. Eggers, M. Schießler, J. Ott, M. Lebarbé, F. López Valdésc Manuel Valdano, P. Petit, W. Marshall, P. Lemmen, M. Östling, M. Masuda, O. Richard, P. Beillas The ENOP project (Enable New Occupant Seating Positions) S. 159-176

„… the ENOP project is to generate biomechanical reference data that can be used for validation of HBMs …” „… (human body models) and ATDs (anthropometric test devices) in non-conventional seating positions. 15 PMHS …” „… seating positions, based on reference sled tests with PMHS in upright positions and with a focus on …”

S. Roka Integrated Active and Passive Safety Protocol – A Feasibility Study with Human Body Models and Volunteers S. 55-66

„… Integrated Active and Passive Safety Protocol A Feasibility Study with Human Body Models and …” „… . Advanced technologies like Human Body Models (HBMs) can replace standardized Anthropomorphic test devices …” „… safety system enhancements across diverse populations. To accurately model an HBM's response to a …”

F. Neumann, L. Rieger, C. Vieler, S. Schilling, A. Soni, B. Eickhoff, B. Pipkorn, M. Morlock Sensitivitätsanalyse der anthropometrischen Wirbelsäulenpositionen bezüglich Frakturrisiken in Komfortsitzpositionen in frontalen Crashsituationen S. 249-268

„… repositioning. Arms and head were aligned to an in-house development reference model. However, disparities in …” „… eine „stark s-förmige“. Das Human Body Model (HBM) THUMS 4.2 (Total Human Model for Safety) wurde an …” „… : “s-shaped” (S) and “more s-shaped” (M). The human body model (HBM), THUMS 4.2 (Total Human Model for Safety …”

S. Schilling, B. Eickhoff Occupant classification and crash severity detection enable individualized shoulder belt forces and improve NCAP ratings on rear seat S. 113-124

„… limiter level (CLL) as a reference system. For the individualized belt VDI-Berichte Nr. 2426, 2023 113 …” „… constant load limiter level (CLL) as a reference system. A crash-locking-tongue (CLT) in a short bracket …” „… reference belt system was considered to fulfill the legal requirement (ECE-R16) and the 2023 Euro NCAP …”

L. F. A. de Oliveira, L. Schories Evaluation of the performance of an AEB system considering the reduction of injury severity in not-avoided cases using the injury risk function built with a logistic regression model and GIDAS Data S. 339-354

„… not-avoided cases using the injury risk function built with a logistic regression model and GIDAS Data …” „… a function of one or more accident parameters. In this paper, the logistic regression model was used …” „… computational time requirements. Alternatively, the established injury risk function, a mathematical model that …”

P. Laufer, R. Konhäuser Camera-Based Gender Estimation of Vehicle Occupants with Virtual Testing Using Synthetic Data S. 99-112

„… driver and investigate the model's applicability to an occupant monitoring camera mounted in the rearview …” „… ethnicity groups were equally distributed. This ensures that the model learns from a balanced validation …” „… , validation set, and test set is visualized in figure 2-4. 5. Evaluation of the CNN Model on a Driver …”

M. Rees, S. Peldschus, P. Wernicke Sensitivität verschiedener Menschmodelle auf ein Submarining-Auftreten bei Variation ihrer vorderen Beckenkamm-Geometrie auf Basis von CT-Bilddaten – Unter Zuhilfenahme mehrerer, objektiver Submarinin... S. 269-284

„… Element Model, TIP, 2015. [4] Uriot et al., Reference PMHS Sled Tests to Assess Submarining, Stapp J, 2015 …” „… , https://www.toyota.co.jp/thums/ [7] Klug et al., Introduction of the VIVA+ Vulnerable Road User Models, Human Modeling and …” „… Sensitivity of Multiple Human-Body-Models to Submarining Occurrence by Doing CT-Based Variations of Their …”

M. Witt, F. Raisch, J. Mejia Hernandez Sicherheitsorientierter Entwicklungsprozess Human Factors für Level 2 Systeme S. 303-312

„… presented regarding the driver as a key element in order to support his mental model, enforce correct …” „… behavior is, among other things determined by the driver’s understanding and mental model of the system …” „… model, it is more likely that he will not use the system as intended and the risk for foreseeable misuse …”

K. Reinprecht, B. Hristov Welche Gefahren nehmen E-ScooterfahrerInnen im urbanen Umfeld wahr? Sind Kreuzungen gefährlicher als die freie Fahrt auf der Straße? S. 355-0

„… in the study was a TIER, model ES200G. It has a range of about 30 km and the charging time of the …” „… placed in the field of view in front of the participant and serve as reference points for the gaze …” „… , 2023368 References [1 …”

H. Paul, I. Peschel, B. Hohage Gender discussion in vehicle safety - An overview of the consideration of subparts of the population in vehicle safety based on accident data analysis and current ATD development S. 37-54

„… female occupants compared to males. Across all vehicle model years considered (1960-2011), females have a …” „… standards. Moreover, this study already shows a reduction of the injury risk if a newer vehicle model was …” „… and Nutrition Examination Survey (HANES), 1971-1974 [29] Anthropometric Reference Data for Children …”

A. Trumpp, A.-M. Zuehlsdorff, Y. Radunz, S. Lehnert Potentials and Limitations in Driver Health Monitoring S. 67-82

„… by regulations and guidelines. VDI-Berichte Nr. 2426, 202378References [1] World Health …” „… Multilayer Human Tissue Model Exposed to Base-Station Radiation Using Transmission Line Analysis. IEEE …”

doi.org/10.51202/9783181024263

Herwig Unger, Mario M. Kubek - Theory and Application of Text-representing Centroids

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Herwig Unger, Mario M. Kubek

Theory and Application of Text-representing Centroids

Series: Informatik/ Kommunikation

Volume 863 2019

Results in this title

M. M. Kubek, H. Unger Centroid Terms as Text Representatives S. 7-26

„… realised as term vectors following thebag-of-words model.The same approach is applied when the semantic …” „… basedon the bag-of-words model and thus return only rough estimationsregarding the relatedness of texts …” „… databases such as WordNet [5] must be consulted as a reference. Despitetheir usefulness, these resources are …”

M. M. Kubek, T. Böhme, H. Unger Empiric Experiments with Text-representing Centroids S. 39-54

„… methods are based on the vector space model[3] following the bag-of-words principle and work with any kind …” „… to build the undirected co-occurrencegraph G (as the reference for the centroid distance measure …” „… reference document’s cen-troid term (calculated after each time step) stabilises quickly. However, the …”

M. M. Kubek, Herwig Unger Towards a Librarian of the Web S. 55-78

„… ) term or keyword of a single text has been found. Ifsuch a reference corpus is not available, this …” „… in common. The cosine similarity measure (when relying onthe bag-of-words model) would not be able to …” „… nounsand names have been extracted. In order to build the undirected co-occurrencegraph G (as the reference …”

H. Unger a `Librarian of the Web' really needed? S. 1-6

„… direct correspondence in natural language processing,where co-occurrence graphs are a commonly used model …” „… concept ofTRCs is presented and thoroughly discussed in Chapter 9 which completes thisbooklet.References[1 …”

M. M. Kubek, H. Unger The WebEngine – A Fully Integrated, Decentralised Web Search Engine S. 107-120

„… evolving web graph model [2]) emanate from the fact that thereare linear as well as exponential growth …” „… invented. To do so, each peer builds up its own compact semantic pro-file (following the vector space model …” „… with the help of its property graph model, nodes(terms) in co-occurrence graphs can be enriched with …”

M. M. Kubek, T. Böhme, H. Unger Spreading Activation: A Fast Calculation Method for Text Centroids S. 27-38

„… Text Centroids 37References[1] M. Kubek and H. Unger. Centroid terms as text representatives. In …” „… , 2016.[3] S. E. Preece. A Spreading Activation Network Model for Information Retrieval.PhD thesis …”

H. Unger, M. M. Kubek Associative Ring Memory to Support Decentralised Search S. 91-106

„… structures. These adaptations will be elaborated onin future contributions.References[1] Unger, H., Böhme, T …” „… , R.: Google’s Map Reduce programming model – Revisited, In:Science of Computer Programming, Elsevier …” „… between those categories canbe appropriately modelled and approximated by lexical graphs such as the …”

doi.org/10.51202/9783186863102

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