78 research outputs found
Data for publication: "Dynamic behavior of shear-thickening tluids under harmonic excitation: an experimental investigation"
No full textThe dataset accompanying the publication "Dynamic Behavior of Shear-Thickening Fluids under Harmonic Excitation: An Experimental Investigation" is now provided exclusively as a single archive:STF Dynamic Behavior Analysis: MATLAB CodeThis repository contains the MATLAB code and all accompanying files inside Suplimentary material.zip and the separate ZIP file “Experimental Paper_Mechanical Systems and Signal Processing_Elsevier.zip,” associated with the paper:"Dynamic Behavior of Shear-Thickening Fluids under Harmonic Excitation: An Experimental Investigation"OverviewThese scripts process experimental data, perform parameter identification for the oscillator system, and generate figures demonstrating the dynamic behavior of shear-thickening fluids (STFs) under harmonic excitation.PrerequisitesMATLAB (R2019b or newer recommended)Inside Supplementary_material.zip, you will find:All .txt experimental data files:RecordedExperimentalDataWithoutSTFOmega0.txtRecordedExperimentalDataWithoutSTFOmegaIncreasingRate0_047.txtRecordedExperimentalDataWithSTFOmegaIncreasingRate0_0333.txtRecordedExperimentalDataWithSTFOmegaConstant8_2.txtRecordedExperimentalDataWithSTFOmegaConstant11_3.txtThe main MATLAB scripts and auxiliary functions for data processing, parameter identification, and figure generation.Any related documentation (including the paper PDF, if applicable).Execution StepsFollow these steps to process the data and generate all figures:1. Data FiltrationRun prepare_mat_data.mProcesses raw experimental data exported from LabVIEW.Applies polynomial fitting to compute rotation speed, velocity, and acceleration.Generates .mat files containing the filtered data for further analysis.2. Free Vibration Parameter IdentificationRun identOscDyn_freeMotion.mUses Nelder-Mead optimization to determine stiffness (k), damping (c), and friction (T) parameters.Minimizes the objective function (Eq. 14) to match simulation with experimental data.Generates Figure 3 comparing simulation vs. experiment.Saves identified parameters in par0.3. Forced Vibration Parameter Identification and Figure GenerationRun identOscDyn_forcedMotion.mBuilds on free-vibration parameters for forced vibration.Generates Figures 4–8, showing:Excitation frequency vs. time (Fig. 4)Resistance force vs. velocity (Fig. 5)Displacement comparison (Fig. 6)Velocity comparison (Fig. 7)Frequency response (Fig. 8)Saves refined parameters to par1.4. Additional FiguresAutomatic generation of:Figure 13: STF force relationships in the resonance region (Section 6.1.2).Figure 15: Time histories in the post-resonance region (Section 6.1.3).Figure 16: STF force relationships in the post-resonance region (Section 6.1.3).Figure 17: STF behavior at constant excitation frequency (Section 6.1.3).Figure 18: Frequency response comparison with and without STF (Section 6.2).TroubleshootingPath Issues: Keep all files in the same directory or update path references in the scripts.Optimization Variability: Multiple runs may be needed due to the stochastic nature of Nelder-Mead.Memory Constraints: For large datasets, reduce data size or increase MATLAB’s allocated memory.Additional InformationFor questions or issues regarding the code, please contact the corresponding author as indicated in the paper.© 2025 | All rights reserved by the authors of"Dynamic Behavior of Shear-Thickening Fluids under Harmonic Excitation: An Experimental Investigation."Additional Note: Paper Source FilesAlso included in this repository is a second ZIP file, “Experimental Paper_Mechanical Systems and Signal Processing_Elsevier.zip,” containing:elsarticle-template folderElsevier’s LaTeX class/template files (e.g., elsarticle.cls and elsarticle-template.tex).Figure 1.jpg through Figure 18.jpgHigh-resolution figures referenced in the manuscript (see image in the screenshot: 18 total JPG files).mybibfile.bibA BibTeX reference database, ensuring proper citation management.These items allow you to compile the full manuscript (in LaTeX) for submission to Mechanical Systems and Signal Processing (Elsevier), with all figures and references properly linked.</p
Targeting in International Law : Counterinsurgency and the Legal Materiality of the Principle of Distinction
No full textThis book is about how distinctions are drawn between civilians and combatants in modern warfare and how the legal principle of distinction depends on the technical means through which combatants make themselves visibly distinguishable from civilians. The author demonstrates that technologies of visualisation have always been part of the operation of the principle of distinction, arguing that the military uniform sustained the legal categories of civilian and combatant and actively set the boundaries of permissible and prohibited targeting, and so legal and illegal killing. Drawing upon insights from the theory of legal materiality, visual studies, critical fashion studies, and a dozen of military manuals he shows that far from being passive objects of regulation, these technologies help to draw the boundaries of the legitimate target. With its attention to the co-productive relationship between law, technologies of visualisation and legitimation of violence, this book will be relevant to a large community of researchers in international law, international relations, critical military studies, contemporary counterinsurgency operations and the sociology of law. © 2024 Amin Parsa
Mearuring the orientation and roation rate of 3D printed particles in turbulence
No full textThe orientation distribution and rotations of anisotropic particles in turbulent flows play a key role in many applications ranging from icy clouds to papermaking and drag reduction in pipe flow. However, experimental access to time-resolved orientations of anisotropic particles has not been easy to achieve. The use of 3D printing opens up the possibility to fabricate a wide range of particle shapes with smallest dimension down to 300 μm. So far, we have printed rods, crosses, jacks, triads, tetrads and helical particle shapes. We extract particle orientations from stereoscopic video images using a method of least squares optimization in Euler angle space. We find that in turbulence, the orientation and rotation-rate of many particles can be understood using a simple picture of alignment of both the vorticity and a long axis of the particle with the Lagrangian stretching direction of the flow
First camera trap record of Striped Hyena Hyaena hyaena (Linnaeus, 1758) (Mammalia: Carnivora: Hyaenidae) in Parsa National Park, Nepal
No full text© Regmi et al. 2022. Creatve Commons Atributon 4.0 Internatonal License. JoTT allows unrestricted use, reproducton, and distributon of this artcle in any medium by providing adequate credit to the author(s) and the source of publicaton.The Striped Hyena occurs in the Tarai and midhill regions of Nepal, where limited information is available on species distribution. A camera trap survey was conducted in Parsa National Park in 2016 (Feb–May) and 2016–2017 (Nov–Feb) to monitor tigers at 158 locations for 21 days (6,615 trap efforts in total). This study successfully captured the 15 hyena images in 5 grids of eastern part (named as extension area) of national park. A total of 17 mammal species were captured simultaneously in hyena captured grid during the survey period. The presence of hyenas in Parsa National Park indicates the collective efforts of the government, conservation organizations and local communities in hyena conservation. A detailed ecological study of this species has been recommended for designing hyena conservation plan in the regionpublishedVersio
Passengers’ preferences for architectural design characteristics in the design of airport terminals
No full textWith the need to increase total revenues, airports have begun to use commercial retail. A well-designed airport may provide great service to clients and consumers and increase their satisfaction and in turn their spending behaviours. Since there is suggestive evidence that there might be cultural associations of white, purple or black with different emotional loadings to these colours across cultures, the present study investigated passengers’ preferences for architectural design characteristics of an airport in a new cultural setting. Discrete choice modelling was used to measure the passengers’ preferences for 10 interior design characteristics of the passenger terminal using 3D renderings. Data on 435 passengers were collected at Mehrabad International Airport, which also included passengers’ emotions. Passengers in the terminal hall preferred a curved and transparent ceiling, material in warm colours, cool lighting, with low width and low height, greenery and without any decorations. When compared to other studies, it may well be that passenger preferences for lighting and certain colour schemes reflect geographical or cultural differences. For other interior design characteristics, preferences relating to the shape of the ceiling and the amount of daylight, as well as the presence of greenery, may well be reflections of passengers’ restorative needs.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Design & Construction Managemen
Donald Whitcomb. “From Shahristān to Medina Revisited”
No full textThe author re-examines the Sasanian cities in Fars (Jūr /Fīrūzābād, Bīšāpūr, Istakhr) and Khuzestan (two cities of Jundi Šāpūr) through the archaeological evidence. He began by describing the above-mentioned prominent cities and added the results of new archaeological researches for a better understanding of urban development during the Sasanian period. Apart from the large cities, he provides valuable information and interpretation on other Sasanian and Islamic cities such as Širāz / Qasr-i ..
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Lasers and new methods of particle acceleration
No full textThere has been a great progress in development of high power laser technology. Harnessing their potential for particle accelerators is a challenge and of great interest for development of future high energy colliders. The author discusses some of the advances and new methods of acceleration including plasma-based accelerators. The exponential increase in sophistication and power of all aspects of accelerator development and operation that has been demonstrated has been remarkable. This success has been driven by the inherent interest to gain new and deeper understanding of the universe around us. With the limitations of the conventional technology it may not be possible to meet the requirements of the future accelerators with demands for higher and higher energies and luminosities. It is believed that using the existing technology one can build a linear collider with about 1 TeV center of mass energy. However, it would be very difficult (or impossible) to build linear colliders with energies much above one or two TeV without a new method of acceleration. Laser driven high gradient accelerators are becoming more realistic and is expected to provide an alternative, (more compact, and more economical), to conventional accelerators in the future. The author discusses some of the new methods of particle acceleration, including laser and particle beam driven plasma based accelerators, near and far field accelerators. He also discusses the enhanced IFEL (Inverse Free Electron Laser) and NAIBEA (Nonlinear Amplification of Inverse-Beamstrahlung Electron Acceleration) schemes, laser driven photo-injector and the high energy physics requirements
TAL-E KHANDAGH (“MOATED MOUND”): A Military Structure in Ancient Fars
No full textInternational audienceThe ancient province of Fars in southern Iran was the home of a number of capital cities over several dynasties.The present article introduces archaeological monuments known as tal-e khandaghs, so named because of the presence of a deep moat that invariably surrounds a substantial rampart. The tal-e khandagh at Sar Mashhad, which Trümpelmann interpreted as a tower of silence, is the earliest of these structures. In a survey carried out in 2007 between Bishapur, Borazjan, and Firouzabad, the author identified and studied a number of similar structures and came to the conclusion that they probably functioned as defensive military installations
Estimation of dislocations density and distribution of dislocations during ECAP-Conform process
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