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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
211

Možnosti systému SinuTrain Operate při programování CNC obráběcích strojů / SinuTrain Operate tools for programming of CNC machine tools

Bartošík, Luděk January 2012 (has links)
This Master’s thesis is focused on capatilibities of software SinuTrain. In the first part there is a summary of drive systems and a research of their share in the marketplace. In the next part debates abilities and some methods of programming. The last part devotes to practical demonstrations of production of some parts of mine draft and simulation of their production.
212

Návrh jízdního simulátoru / Design of driving simulator

Kubeš, Filip January 2014 (has links)
The aim of this thesis is the design of a motion driving simulator for real-time simulation of driving experience. The design takes inspiration from an analysis of existing solutions. An emphasis was put on driver ergonomics in positions typical for a sports car, passenger car and truck, then on variability of motion system and simplicity of the whole design. The dynamics of motion system is also a subject of research. The computational model has been created to test the optimal position of moving arms. Another aim of the study is to create an interface between hardware and software, to confirm the function of the control device using a simple simulation model.
213

Pokročilý simulátor mikrokontrolérů rodiny MSP430 / Advanced Simulator of MSP430 Microcontrollers

Kaluža, Jan January 2014 (has links)
The goal of this master's thesis is to provide an introduction to MSP430 microcontrollers and to design a simulator of these microcontrollers, focusing on easy implementation of extensions using peripherals. After a short introduction, the MSP430 microcontrollers are briefly described, including their internal peripherals and the formats used to store the binary executable code. The thesis continues with a  description of discrete event simulation using the DEVS formalism. Based on previous chapters, the new simulator (consisting of a simulation core, graphical user interface and library for MSP430 microcontroller simulation)  is designed and implemented. The implementation is tested by comparison with real microcontroller and in the end of the thesis, there is a summary and evaluation of the implemented simulator.
214

Zpracování a vizualizace senzorových dat ve vojenském prostředí / Processing and Visualization of Military Sensor Data

Boychuk, Maksym January 2016 (has links)
This thesis deals with the creating, visualization and processing data in a military environment. The task is to design and implement a system that enables the creation, visualization and processing ESM data. The result of this work is a ESMBD application that allows using a classical approach, which is a relational database, and BigData technologies for data storage and manipulation. The comparison of data processing speed while using the classic approach (Postgres database) and BigData technologies (Cassandra databases and Hadoop) has been carried out as well.
215

Efficacy of gapseal® in preventing microleakage at the dental implant abutment interface

Badi Mohamed, Hadeel Mohamed January 2021 (has links)
Magister Chirurgiae Dentium (MChD) / Dental implants have proven to be a success in the past decades, however the inevitable presence of microgaps at the implant abutment interface leading to microleakage is still a distressing concern. Microbial leakage can lead to peri-implant disease and bone loss and reduces implants' success rates. Measures to decrease the effect of the microgap were introduced; amongst them is the application of silicone sealing gels, such as GapSeal®.
216

Emerging Trends in Technology and Innovation in Lower Limb Prosthetic Devices

Nixon Oduor Opondo (12488902) 03 May 2022 (has links)
<p>This study explored the history, present status, and future trends in assistive technologies and innovations in lower limb prosthesis. The study analyzed trends in patent filing and looked into how mainstream technologies such as additive manufacturing, advanced materials and robotic integrate with other enabling technologies such as IoT, AI, sensors etc. to advance technology innovation and improve the quality of life of people with limb impairment.</p> <p><br></p> <p>This research study is significant in helping to understand what is on the horizon for people with lower limb impairment given that this population tend to be neglected and their needs have not been fully addressed in many areas</p>
217

Real Autonomous Driving from a Passenger’s Perspective: Two Experimental Investigations Using Gaze Behaviour and Trust Ratings in Field and Simulator

Strauch, Christoph, Mühl, Kristin, Patro, Katarzyna, Grabmaier, Christoph, Reithinger, Susanne, Baumann, Martin, Huckauf, Anke 04 April 2022 (has links)
Trusting autonomous vehicles is seen as crucial for their dissemination. However, research on autonomous driving so far is restricted by using closed training courses or simulators and by comparing behaviour and evaluation while driving oneself (a manual car) with being driven (by an autonomous car). In the current study, we investigated passengers’ eye movements, categorized as safety-relevant or not safety-relevant, and trust ratings while being driven, once manually and once by an autonomous car, in real traffic as well as in a simulator. As some of the effects observed in the field experiment might have been caused by driving style, driving style was additionally varied in the simulator. Fixations in safety-relevant regions (e.g., on the road and steering wheel) were observed more frequently during safety critical driving situations than during regular driving. More safety-relevant fixations for the autonomous compared to the manual driving mode were observed particularly in the field. Trust ratings were affected by driving mode mainly in the simulator: Here, being driven autonomously led to a lower reported trust than believing to be driven by a human driver. Driving style showed to affect trust ratings, but not gaze behaviour in the simulator experiment. Correlations between gazing into safety relevant regions and trust ratings were of smaller descriptive size than in recent investigations on drivers, suggesting that gazing into safety-relevant regions as objective alternative to trust ratings may not be as exhaustive for passengers as for drivers.
218

Extension of the Mission Timeline Simulator with Modern Optimization Capabilities

Pérez Cámara, Flavia January 2022 (has links)
The Advanced Telescope for High-Energy Astrophysics (ATHENA) has been selected as the second large (L-class) mission designed to address the Cosmic Vision science theme “The Hot and Energetic Universe”. The European Space Agency has produced a Mission Observation Plan which contains objectives and constraints of the mission. In addition, this plan includes a representative sequence of targets, the Mock Observation Sequence, which defines the order in which ATHENA has to observe the targets. The feasibility of the Mock Observation Plan has to be assessed and the Mission Timeline Simulator has been designed for this purpose. It is a tool developed by Airbus DS that includes all the spacecraft operations. The analysis of the Mock Observation Plan in the Mission Timeline Simulator showed that the ATHENA’s line of sight points into the sun during some observations. This would lead to a loss of the whole mission since sunlight damages the instruments. Consequently, a new Observation Sequence has been produced by Airbus DS, in which the spacecraft does not point to the sun. However, this new sequence does not meet one important requirement: the operational availability shall be above 90%. The operational availability is defined by the percentage of the total time which is used for science observation. The version at the start of the thesis of the artificial case study but representative to the ATHENA mission achieved a value of 87.3 %. One of the main objectives of this thesis is therefore to obtain a sequence that meets the operational availability requirement with the final goal of generating a functional timeline of several days. If any interrupt occurs to the timeline (Targets of Opportunity, safe mode events, etc.), the spacecraft shall be able to find the way back to the optimal timeline or replan a new one. The current status includes these events but the timeline does not get interrupted. In this aspect, the currently implemented Greedy algorithm, that chooses the observation sequence, must be extended in branch and horizon. In order to achieve these objectives, a Beam Search algorithm has been developed and implemented in the Mission Timeline Simulator. The operational availability has been increased by incrementing the width search (branching factor). The depth search (horizon factor) allows the user to restrict the longitude of the timeline in terms of number of targets. A first implementation not including interrupts was analysed and an operational availability higher than 90% was achieved. A second implementation with a functional timeline considering interrupts shows a decrease in the operational availability, which does not reach 90%; nevertheless improving the results of the previous version with a final operational availability of 89.24%. Note that this is a representative case study of the mission. The Beam Search algorithm has been demonstrated to be suitable for the defined problem and a future sensitivity analysis of different parameters, such as depth and width search, could increase further the performance of the algorithm and therefore the simulation results. / ATHENA mission
219

A Low Cost, Portable Stewart Platform Study for Flight Simulation and Gaming Simulation

Grogan, Andrew S. January 2020 (has links)
No description available.
220

Nonlinear six degree-ofreedom simulator for a small unmanned aerial vehicle

Edwards, Christopher Doyle 01 May 2010 (has links)
Aircraft modeling and simulation have become increasingly important in the areas of pilot training, safety and aircraft design, especially for unmanned aerial vehicles (UAVs). A userriendly, easily expandable, nonlinear six degree-ofreedom aircraft simulator for the Xipiter X-2C Xawk UAV was created to address these issues. The simulator will allow pilots to have an opportunity to train and gain experience in flying the aircraft even before it leaves the ground. In addition, it will allow for design modifications or new aircraft designs to be evaluated before time and money are spent on their implementation. This work can also serve as the basis for the development of control systems for the aircraft, such as a control augmentation system or autopilot.

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