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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.
1

Is video-playback in simulation, after verbal debriefing, associated with changes in nursing students’ reflection, communication and anxiety level?

Vigier, Darcelle 20 September 2016 (has links)
Educational activities such as simulation, that promote the transfer of knowledge from theory to practice, are recognized as effective learning strategies by nursing educators. Debriefing that takes place after a simulation session contributes to the knowledge gained by students and can include video-playback review. Very few studies have examined the impact of video-playback review following the simulation and debriefing session. This quasi-experimental study asked the following question: Is video-playback in simulation, after verbal debriefing, associated with changes in nursing students’ reflection, communication and anxiety level? Kolb’s experiential learning theory provided the lens for this research. Findings from this study suggest that oral debriefing alone from a facilitator might have an impact in relation to students’ perceptions of their reflection, communication skills and anxiety levels. / October 2016
2

Crystal-Si Solar Cell Characterization and Simulation

Li, Chih-Chen 21 July 2003 (has links)
none
3

Produktionssteuerung mittels modularer Simulation /

Blazejewski, Gert. January 2000 (has links)
Zugl.: Chemnitz, Zwickau, Techn. Universiẗat, Diss., 1999.
4

Ein flexibler, CORBA-basierter Ansatz für die verteilte, komponentenorientierte Simulation

Bachmann, Ralf. January 2003 (has links) (PDF)
Hamburg, Universiẗat, Diss., 2003.
5

A SIMULATION APPROACH TO MODELING TRAFFIC IN CONSTRUCTION ZONES

Oner, Erdinc January 2004 (has links)
No description available.
6

Multistage 2-DOF rocket trajectory simulation program for freshmen level engineering students

Doucet, Zachery 09 August 2019 (has links)
With the growing interest in space exploration, the need for professionals to be prepared for the job is ever more present. This project aims to satisfy that goal by presenting a MATLAB program for use by freshmen level engineering students that provides results for rocket trajectories within acceptable margins of accuracy. The initial stages of development were shaped by the decision to keep the program accessible to someone within the target demographic. As a result, a three-degree of freedom system was chosen, with focus put on amateur rocketry including high power rockets. Various methods were used to provide outputs for rocket flight paths that could be compared to field tests. The solution methods available are Euler and fourth-order Runge-Kutta that utilize the equations of motion for a perpendicular-parallel or x-y coordinate frame. Trajectory simulations and field tests were conducted to have reference cases to confirm the accuracy of the program.
7

Enabling Peer-to-Peer Co-Simulation / Möjliggöra distribuerad simulering via P2P

Eriksson, Felix January 2015 (has links)
Simulation enables preliminary testing of products that may otherwise be dicult, ex-pensive, or dangerous to test physically. Unfortunately, intellectual property concernscan make it dicult or impossible to share the human-readable simulation models toend-users. In fact, there can even be diculties with sharing executables because ofthe possibility for reverse-engineering. This presents a problem when simulating if themodel relies on components for which the source code or executable is not available,such as proprietary components developed by another party. This thesis investigateswhether it is possible to enable a set of networked peers to all take part in computingthe same simulation without any of them having access to the entire model. One way tosolve this problem is to let each system that holds a model of a component to computeits part of the simulation for a single timestep and to share the new state through peer-to-peer connections with the other systems, once a response has been received fromall other peers, the local simulation can advance one timestep and the process can berepeated. But running a simulation over a network can make it signicantly slower,since local operations on the CPU and memory are much faster than operations overa network, and the peers will be spending most of their time waiting for each other asa result. To avoid such delays, each peer maintains expected values for variables thatare not in the local model, and updates are sent only when a local variable changes.These updates are stamped with the local simulation-time, thus allowing the recipientpeers to know when the update is required in the simulations future, or to when itshould be retroactively applied in the simulations past. Using this technique, the peerscan compute their respective local models under the assumption that the variablesthat the other peers control are unchanged. Thus the peers can advance any numberof timesteps without needing to stop and wait for other peers. These techniques willlikely result in wasted work if one or more peers are advancing their simulation timeslower than the others, when this happens, the peers have the ability to re-distributethe workload on the y by transferring control over models. This also makes it possibleto accommodate for systems joining or leaving the simulation while it is running.In this thesis we show that co-simulating in this fashion is a workable option to tra-ditional simulation when the local models are incomplete, but that the performanceis very dependent on the models being simulated. Especially the relation between thefrequency of required synchronizations, and the time to compute a timestep. In ourexperiments with fairly basic models, the performance ratio, compared to traditionalsimulation, ranged between less than one percent of that of traditional simulation, upto roughly 70%. But with slower models always having a better ratio.
8

A contextualized Web-based learning environment for DEVS models

Srivrunyoo, Inthira. January 2007 (has links)
Thesis (M.S.)--Georgia State University, 2007. / Title from file title page. Xiaolin Hu, committee chair; Rajshekhar Sunderraman, Ying Zhu, committee members. Electronic text (71 p. : ill. (some col.)) : digital, PDF file. Description based on contents viewed Jan. 29, 2008. Includes bibliographical references (p. 70-71).
9

Co-simulation Environment for Modeling Networked Cyber-Physical Systems

Alharthi, Mohannad 25 April 2014 (has links)
Cyber-physical systems (CPSs) represent a new generation of engineered systems that tightly integrates computations, communications (cyber) and physics. Simulation plays a considerable role in validating CPSs as it substantially reduces the costs and risks in the design-testing cycles. Reliable simulations, however, mandate realistic modeling for both the cyber and the physical aspects. This is especially the case in various networked mobile CPSs (e.g., excavation robots and vehicular networks), where cost and risk may become substantial. Current CPS modeling tools lack complete models of communication. Co-simulation attempts to overcome this limitation by integrating multiple modeling and simulation tools to offer complete models of all aspects of CPSs. In this thesis, we design and implement a co-simulation environment for modeling and simulating networked CPSs. The environment is called AcumenNS3 and it integrates Acumen, a language for modeling hybrid physical systems, with NS-3, a discrete-event network simulator. This environment allows users to augment network simulations with physical models using an easy-to-use modeling language. It provides a seamless integration between network and physics models by providing mobility based on the physical simulation in addition to generic access to the physical state. Using the AcumenNS3 environment, we demonstrate and model example simulation scenarios of networked CPSs. / Thesis (Master, Computing) -- Queen's University, 2014-04-24 14:38:30.039
10

CFD simulation and experimental measurement of nickel solids concentration distribution in a stirred tank

Ochieng, A, Onyango, MS, Kiriamiti, KH 01 May 2010 (has links)
Synopsis Solids suspension influences the quality of mixing and energy requirement in a solid-liquid system, both of which determine the efficiency of industrial processes such as nickel precipitation. Nickel solids concentration distribution in a stirred tank was investigated using computational fluid dynamics (CFD) and experimental methods. The concentration distribution of the nickel solids was compared with that of sand and glass. The laser Doppler velocimetry (LDV) method was used to measure the velocity field for the liquid-only system and an optical technique was employed to determine the axial solids concentration distribution. Regions of inhomogeneity in the tank were identified. It was found that, for a given solids loading, the solids concentration distribution depended on both particle size and particle size distribution. High solids loadings were investigated and a difference in the concentration distribution pattern was obtained with nickel, flint glass and sand particles. The CFD simulation results highlighted problems that could be associated with some conventional experimental methods of determining solids concentration distribution in a stirred tank.

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