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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

Nursing students’ experiences with clinical communication using a virtual program.

Samwel, Shelley 06 January 2017 (has links)
The accrediting and nursing organizations are promoting patient safety and well-being by emphasizing clinical language proficiency. This presents a challenge for English as second language (ESL) nursing students in learning language skills for the clinical environment. This study explicates the experiences and reflections from nursing students, who are not native English speakers that used a virtual simulation program called vSim in relation to clinical language skills. Five students participated in this study. A qualitative study utilizing hermeneutic phenomenological methodology was used to collect experiential data and then was interpreted according to Van Manen’s (1990) data analysis method. Themes of confidence, patient safety, knowledge transfer from classroom to clinical, communication within the clinical environment, and acquisition of language skills emerged from the interviews and reflective journals. This research study shows that the use of a non -immersive virtual simulation provides a positive contribution to ESL nursing students’ experiences with clinical language skills and can provide nursing educators another teaching strategy to assist ESL nursing students achieve clinical language competency. / Graduate / 0569 / sh_samwel@rogers.com
2

Exploring the Perceived Effectiveness of a Racism and Microaggression Virtual Simulation Module and Debriefing Framework for Undergraduate Nursing Students

Yusuf, Hayan Amina 04 October 2022 (has links)
Racism and microaggressions have proved to damage individuals’ physical and mental health and continue to exist worldwide today. Within the nursing context, minority nursing students are likely to experience racism and microaggressions and lack the privilege of learning in a healthy environment. There were no current interventions to support students; however, virtual simulation was found to have enhanced learning outcomes. This research explored the perceived effectiveness of a virtual simulation and debriefing to navigate racism and microaggressions for undergraduate nursing students at an Ontario University. The virtual simulation adhered to the International Nursing Association for Clinical Simulation and learning (INACSL) standards. Kolb’s Experiential Learning Theory (ELT) was the conceptual framework guiding the study’s structure. Multiple methods research incorporating the Simulation Effectiveness Tool-Modified survey for quantitative data collection and semi-structured interviews on perceptions of the CAN-Sim Cultural Humility and Intersectionality for Psychological Safety debriefing framework for qualitative data collection was completed. Data collection took place over three months (October – December 2021) and after participants completed the survey (n = 39) and semi-structured interviews (n = 2), statistical and thematic analyses were completed. Findings from the survey indicated the virtual simulation as having a positive impact on learning ranging from prebriefing, scenario, and debriefing content. Findings from the semi-structured interviews included common themes of emotional competence, cognitive change, and comprehensiveness related to the debriefing framework. Future research on evaluation tools focusing on racism and microaggression or other sensitive topics was suggested and suggestions on the future use of the debriefing framework was provided.
3

Effect of Machine Positional Errors on Geometric Tolerances in Additive Manufacturing

Bhatia, Shaleen 10 October 2014 (has links)
No description available.
4

The Generation of a Digital Phantom for Testing of Digitally Reconstructed Radiographs

Mason, Nicholas Andrew, 11 October 2004 (has links)
The construction of phantoms for testing imaging parameters has been well documented in the literature. As computers have been introduced into the different areas of medicine, they have become more and more relied upon to replace conventional technologies. One specific example is that of plane film X-rays. Digitally Reconstructed Radiographs (DRR's) are computer generated images that are generated from a 3 D volume of data, such as CT or MRI axial scans, and can be used in place of conventional X rays. The computer can generate a DRR image for any position, orientation and magnification, and geometries not physically possible in the real world. In this work a technique is developed to generate phantoms that can be used for testing the accuracy of DRR's. A computer generated phantom can produce multiple test cases that can be used to test specific variables of the DRR's. A series of 12 different standard phantoms were used to test the ability of three different commercially available treatment planning or virtual simulation systems to generate DRR's. A virtual simulation system under development by the author and collaborators and seeking approval from the Food and Drug Administration (FDA), was used as a development platform for this work. Initial evaluation of the usefulness of the digital phantoms for testing showed immediate results. The first virtual simulation system tested with the phantoms revealed a major error in its ability to generate accurate DRR's. Subsequently tests of the three commercially available systems further demonstrated the usefulness of the work. The tests revealed errors in two of the three systems evaluated but it was determined that they were not clinically significant. In conclusion, the digital phantoms developed in this work are a fast, accurate method for testing digitally reconstructed radiographs. It is an extremely versatile testing method, as the phantoms can be generated with ease for any geometry without needing access to a CT scanner. This method of testing can be used to test a number of different DRR image parameters. Should an error be found, it can be used to isolate errors that might exist in the imaging device. It is an extremely versatile testing method, as the phantoms can be generated with ease for any geometry without needing access to a CT scanner. This method of testing can be used to test a number of different DRR image parameters. Should an error be found, it can be used to isolate errors that might exist in the imaging device.
5

Developing effective virtual simulations and serious games: the effect of background sound cues on visual quality perception

Rojas Gualdron, David Arnulfo 01 August 2012 (has links)
Virtual simulations and serious games (video game-based technologies applied to teaching and learning) have been incorporated in the teaching and training curricula of a large number of professions including medicine/surgery. Despite their benefits, there are open, fundamental issues regarding simulation quality, multi-modal cue interaction, and the resulting effect on visual quality perception and ultimately on knowledge transfer and retention. Here the results of a series of seven studies that examined the effect of background sound (contextually related and non-related with respect to the visual scene) on the perception of visual quality (defined with respect to texture resolution, polygon count) presented in stereoscopic and non-stereoscopic 3D. Results indicate that the perception of visual quality is dependent on ambient (background) sound. The results of these studies have implications for designers and developers of serious games who typically strive for high quality virtual worlds despite the computational burden associated with doing so. The results of these studies also bring us closer to understanding the role of quality, multi-modal interactions, and their effect on visual quality perception. This thesis is part of a larger effort in developing an understanding of virtual environment rendering quality, multi-modal interactions, user-specific factors and their effect on knowledge transfer and retention. / UOIT
6

DEVELOPMENT OF NORTHROP-GRUMMAN MARK VIIE TRAINING UNIT AND WIRELESS VIDEO SYSTEM FOR USE IN IMMERSIVE ENVIRONMENTS

Lewis, Randall Lee 01 January 2014 (has links)
A training unit has been developed that allows NVESD researchers to develop training simulations within virtual environments to enhance infantry skill and awareness. A ground station was developed to house a computer, power system, and video transmission system. This station will allow for a remote operator to wirelessly send a video/audio stream to the handset. The ground station also allows the use of external video and audio inputs to be sent using onboard converters. Different wireless frequencies were evaluated to determine the best for long-range transmission of content. A handset was developed from a carbon fiber prototype shell. The handset features a video receiver, display, power system, OSD system, and external video inputs. The user can view transmitted video and audio while obtaining real-time GPS feedback from the OSD. The alternate video input allows the handset to be used within the virtual environments developed at the University of Kentucky’s Center for Visualization for virtual environments. This thesis will present the research conducted in order to develop Mark VIIE training unit including the requirements for the project, the desired functionality, the NVESD provided equipment, the analysis of the prospective components, the design of custom fabricated parts, and the assembly and integration of the components into a complete system.
7

Blivande specialistsjuksköterskors uppfattningar av lärande vid virtuell traumasimulering : En fenomenografisk intervjustudie

Sand, Gustav January 2018 (has links)
Bakgrund: Trauma är en vanlig orsak till död och invaliditet världen över. Det innebär även ett lidande för patienten, både i den akuta fasen och på sikt. Ett välfungerande traumateam är här av största vikt. Adekvat utbildning och träning av personalen är en nyckel. Tidigare forskning har visat positiva resultat av att lära sig genom simulering, men det finns ett behov av tids- och kostnadseffektiva alternativ. Ett forskningsprojekt inom Linnéuniversitetet och Region Kronoberg har därför utvecklat en virtuell traumasimulering, som ett led i att utveckla och förbättra utbildningen inom trauma. Syfte: Syftet med studien var att beskriva specialistsjuksköterskestudenters uppfattningar av lärande vid en virtuell traumasimulering.  Metod: Intervjuer genomfördes med 15 specialistsjuksköterskestudenter som hade testat simuleringen i grupp. En fenomenografisk analys genomfördes vilket genererade i tre beskrivningskategorier med tillhörande grupper av uppfattningar. Resultat: Den första beskrivningskategorin var ”Att få goda förutsättningar för lärande” genom ett nytt och roligt sätt att lära, tillgång till regelbunden övning, att få lära sig i sin egen takt och ett tryggt sätt att lära sig. I den andra beskrivningskategorin ”Att lära sig på olika sätt” uppfattade studenterna att de lärde sig genom att använda sina sinnen, gruppinteraktion samt genom reflektion och kritiskt tänkande. Den tredje beskrivningskategorin ”Att ha nytta av lärandet” handlade om att studenterna uppfattade att övningen ledde till att behovet av att förberedas för akuta situationer kunde tillgodoses samt att övningen utgjorde ett komplement till fysiska övningar - men inte en ersättning. Slutsatser: Studenter har positiva uppfattningar av lärandet vid en virtuell traumasimulering och kan utgöra ett viktigt komplement till fysiska simuleringar. Fler studier behöver göras för att se om det leder till ett förbättrat traumaomhändertagande. / Background: Trauma is a common global cause of death and invalidity. It causes the patient suffering, in the acute phase as well as in a long-time perspective. A well-functioning trauma team is of greatest importance. Sufficient education and training is the key. Previous research has shown positive results in learning by simulation, but there is a need for time- and cost-effective alternatives. To achieve this, a research project within Linnaeus University and Kronoberg County has developed a virtual trauma simulation where the user interacts in a trauma situation at the emergency room. Aim: The aim of the study was to describe Nurse Specialist student´s perceptions of learning by a virtual trauma simulation. Method: Interviews were carried out with 15 Nurse Specialist students who had performed the simulation in groups. A phenomenographic analysis was conducted which resulted in three categories of description with appurtenant groups of perceptions. Results: The first category of description was ”Getting good conditions for learning” through a new and funny way to learn, access to regular practice, learning at one´s own pace and a safe way to learn. In the second category of description ”Learning in different ways” the students perceived how they learned by using their senses, group interaction and through reflection and critical thinking. The third category of description ”To draw advantage from learning” consisted of the student´s perceptions that the virtual simulation satisfied their needs to be prepared for emergency situations, and also that the simulation acted as a complement to face-to-face simulations - but not a replacement. Conclusions: Students have positive perceptions of learning by a virtual trauma simulation. It could be an important complement to face-to-face simulations. Further studies are necessary to determine if virtual trauma simulation can improve trauma care for the patient. / Virtuell tabletop
8

A pesquisa no ensino de química: a abordagem didática da simulação virtual e da experimentação problematizadora

Silva, Gerla Myrcea Lima da 16 October 2016 (has links)
Submitted by Divisão de Documentação/BC Biblioteca Central (ddbc@ufam.edu.br) on 2017-02-17T13:13:53Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Dissertação - Gerla M. L. Silva.pdf: 3553622 bytes, checksum: a2cb6ee67735c60cbefd2b64a03d8524 (MD5) / Approved for entry into archive by Divisão de Documentação/BC Biblioteca Central (ddbc@ufam.edu.br) on 2017-02-17T13:14:31Z (GMT) No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Dissertação - Gerla M. L. Silva.pdf: 3553622 bytes, checksum: a2cb6ee67735c60cbefd2b64a03d8524 (MD5) / Approved for entry into archive by Divisão de Documentação/BC Biblioteca Central (ddbc@ufam.edu.br) on 2017-02-17T13:15:05Z (GMT) No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Dissertação - Gerla M. L. Silva.pdf: 3553622 bytes, checksum: a2cb6ee67735c60cbefd2b64a03d8524 (MD5) / Made available in DSpace on 2017-02-17T13:15:05Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Dissertação - Gerla M. L. Silva.pdf: 3553622 bytes, checksum: a2cb6ee67735c60cbefd2b64a03d8524 (MD5) Previous issue date: 2016-10-16 / The research aimed to analyse the contributions and potentialities of the didactic approaches of virtual simulation and experimental practical for questions in the chemistry as formative principle, on high school. The content addressed was “The Physical States of Material”. It was employed how a computer tool the virtual simulation states of material PhET (1.10) from Colorado University, because it presents ludic, interactive, dynamic features and it makes possible the visualization , on real time, of the motion and interation particles. For the experiment it was held the naphtalene physical state change, developed by the students, and oriented by the theacher, Who conducted the students to develop the curiosity, investigation and Discovery. Each tool presented a peculiar feature and different qualities, arousing the interest and motivation of the students. It was used the methodological proposal adapted based on the Paulo Freires’s approach whom consists to divide the educational activities in three pedagogical moments (3MP), to know: Inicial problematization, the arrangement of the knowledge and the knowledge application. The development of the study hás ensued by workshop, in a space of time in 3h/weekly class during 13 meetings, in a first year class on the state public high school from Manaus. We tool on the research-action how guiding of the activities that were fulfilled. We perceived the research was qualitative and descriptive. The data were obtained by observation, questionaire appointments and the data were processed according to content analysis. The results show that the used approach is promising because it promoted significantly, the reconstruction of knowledge developing the student’s cognitive skills. / O presente trabalho objetivou analisar as contribuições e potencialidades das abordagens didáticas da simulação virtual e da prática experimental problematizadora na Química como princípio formativo, no Ensino Médio. O conteúdo abordado foi “Os Estados Físicos da Matéria”. Utilizou-se como ferramenta computacional a simulação virtual PhET Estados da Matéria (1.10) da Universidade do Colorado, por apresentar caráter lúdico, interativo, dinâmico e por tornar possível a visualização em tempo real do movimento e interação das partículas. Para a prática experimental realizou-se a mudança de estado físico da naftalina, sendo desenvolvida pelos alunos e mediada pelo professor, levando-os ao processo de desenvolvimento da curiosidade, investigação e descoberta. Cada ferramenta apresentou-se com característica peculiar e com qualidades variadas, despertando o interesse e motivação dos alunos. Utilizou-se a proposta metodológica adaptada com base na abordagem de Paulo Freire, o qual consiste em dividir a atividade educativa em três momentos pedagógicos (3MP), a saber: problematização inicial, organização do conhecimento e aplicação do conhecimento. O desenvolvimento da pesquisa se deu através de oficina com 3h/aulas semanais de 50 minutos cada, totalizando 13 encontros, numa turma de primeiro ano do ensino médio da rede pública estadual de Manaus. Assumiu-se a pesquisa-ação como norteadora das atividades realizadas. Entendemos a pesquisa como qualitativa e descritiva. Os dados foram obtidos através de observação, questionários e entrevista e tratados segundo a Análise de Conteúdo. Os resultados apontam que a abordagem utilizada é promissora, pois promoveu de maneira significativa a reconstrução dos conhecimentos com desenvolvimento das habilidades cognitivas dos alunos.
9

Development and control of a robotic system for no-scar surgery / Développement et contrôle d'un système robotique pour la chirurgie sans cicatrice

De Donno, Antonio 13 December 2013 (has links)
La chirurgie sans cicatrices, visant à réaliser des opérations chirurgicales sans cicatrices visibles, est l'avant-garde dans le domaine de la chirurgie mini-invasive. L'absence d'instruments adéquats est l'un des freins à son utilisation en routine clinique. Dans ce contexte, nous introduisons un nouveau robot chirurgical téléopéré, composé d'un endoscope et de deux instruments flexibles, avec 10 DDL motorisés. Cette thèse explore les différentes façons de contrôler le système. La cinématique du robot est analysée et différentes stratégies de contrôle maître/esclave, allant du contrôle articulaire au Cartésien, sont proposées. Ces stratégies ont été testés sur un simulateur virtuel ainsi que sur le système réel en laboratoire et en ex-vivo. Les résultats montrent qu’un seul utilisateur est capable de contrôler le robot et d’effectuer des tâches complexes en utilisant deux interfaces haptiques. / No-scar surgery, which aims at performing surgical operations without visible scars, is the vanguard in the field of Minimally Invasive Surgery (MIS). The lack of adequate instrumentation is one of the issues to its clinical routine use. In this context, we introduce a novel teleoperated surgical robot, consisting of an endoscope and two flexible instruments, with 10 motorized DOFs. This thesis investigates the possibilities to control the system. The robot kinematics is analyzed, and differentmaster/slave control strategies, ranging from joint to Cartesian control, are proposed. These strategies have been tested on a specifically developed virtual simulator and on the real system in laboratory and ex-vivo experiments. The results show that a single user is capable to control the robotic system and to perform complex tasks by means of two haptic interfaces.
10

A Common Component-based Software Architecture For Military And Commercial Pc-based Virtual Simulation

Lewis, Joshua 01 January 2006 (has links)
Commercially available military-themed virtual simulations have been developed and sold for entertainment since the beginning of the personal computing era. There exists an intense interest by various branches of the military to leverage the technological advances of the personal computing and video game industries to provide low cost military training. By nature of the content of the commercial military-themed virtual simulations, a large overlap has grown between the interests, resources, standards, and technology of the computer entertainment industry and military training branches. This research attempts to identify these commonalities with the purpose of systematically designing and evaluating a common component-based software architecture that could be used to implement a framework for developing content for both commercial and military virtual simulation software applications.

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