950 resultados para Mobile Robot Navigation


Relevância:

20.00% 20.00%

Publicador:

Resumo:

Earthquakes occurring around the world each year cause thousands ofdeaths, millions of dollars in damage to infrastructure, and incalculablehuman suffering. In recent years, satellite technology has been asignificant boon to response efforts following an earthquake and itsafter-effects by providing mobile communications between response teamsand remote sensing of damaged areas to disaster management organizations.In 2007, an international team of students and professionals assembledduring theInternational Space University’s Summer Session Program in Beijing, Chinato examine how satellite and ground-based technology could be betterintegrated to provide an optimised response in the event of an earthquake.The resulting Technology Resources for Earthquake MOnitoring and Response(TREMOR) proposal describes an integrative prototype response system thatwill implement mobile satellite communication hubs providing telephone anddata links between response teams, onsite telemedicine consultation foremergency first-responders, and satellite navigation systems that willlocate and track emergency vehicles and guide search-and-rescue crews. Aprototype earthquake simulation system is also proposed, integratinghistorical data, earthquake precursor data, and local geomatics andinfrastructure information to predict the damage that could occur in theevent of an earthquake. The backbone of these proposals is a comprehensiveeducation and training program to help individuals, communities andgovernments prepare in advance. The TREMOR team recommends thecoordination of these efforts through a centralised, non-governmentalorganization.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

En este proyecto de final de carrera se realiza la gestión del tráfico de AGV y la simulación de su comportamiento al circular por una planta de estudio. Con la simulación se puede ver como varía el comportamiento de la planta al modificar el número de AGV y la velocidad a la que circulan. La planta objeto de estudio es un laboratorio de análisis clínico en el que se ha sustituido el sistema de transporte interno basado en cintas por uno con AGV, con lo que se ha podido comprobar que dicha sustitución es factible.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Una de les solucions per a minimitzar els costos de producció o d'emmagatzematge és automatitzarne la logística interna. Per dissenyar les aplicacions corresponents és convenient poder validar-les amb un prototipatge. Això ha motivat la realització d'aquest projecte, on s'ha obtingut un prototip d'AGV (automated guided vehicle) que rep les ordres per Bluetooth i, mitjançant uns infrarojos per poder seguir unes línies al terra, és capaç d'anar des del punt inicial fins on se li ha encarregat i tornar al punt inicial. Aquest vehicle pot servir de base per a la implementació d'AGV orientats a aplicacions reals i, per tant, per a la construcció de sistemes més grans i que poden ser utilitzats en plantes de producció, laboratoris, magatzems, ports i d'altres aplicacions diverses.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

One of the most relevant difficulties faced by first-year undergraduate students is to settle into the educational environment of universities. This paper presents a case study that proposes a computer-assisted collaborative experience designed to help students in their transition from high school to university. This is done by facilitating their first contact with the campus and its services, the university community, methodologies and activities. The experience combines individual and collaborative activities, conducted in and out of the classroom, structured following the Jigsaw Collaborative Learning Flow Pattern. A specific environment including portable technologies with network and computer applications has been developed to support and facilitate the orchestration of a flow of learning activities into a single integrated learning setting. The result is a Computer-Supported Collaborative Blended Learning scenario, which has been evaluated with first-year university students of the degrees of Software and Audiovisual Engineering within the subject Introduction to Information and Communications Technologies. The findings reveal that the scenario improves significantly students’ interest in their studies and their understanding about the campus and services provided. The environment is also an innovative approach to successfully support the heterogeneous activities conducted by both teachers and students during the scenario. This paper introduces the goals and context of the case study, describes how the technology was employed to conduct the learning scenario, the evaluation methods and the main results of the experience.

Relevância:

20.00% 20.00%

Publicador:

Relevância:

20.00% 20.00%

Publicador:

Resumo:

BACKGROUND: There is a growing use of mobile devices to access the Internet. We examined whether participants who used a mobile device to access a brief online survey were quicker to respond to the survey but also, less likely to complete it than participants using a traditional web browser. FINDINGS: Using data from a recently completed online intervention trial, we found that participants using mobile devices were quicker to access the survey but less likely to complete it compared to participants using a traditional web browser. More concerning, mobile device users were also less likely to respond to a request to complete a six week follow-up survey compared to those using traditional web browsers. CONCLUSIONS: With roughly a third of participants using mobile devices to answer an online survey in this study, the impact of mobile device usage on survey completion rates is a concern. TRIAL REGISTRATION: ClinicalTrials.gov: NCT01521078.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

PURPOSE: Performing total knee replacement, accurate alignment and neutral rotation of the femoral component are widely believed to be crucial for the ultimate success. Contrary to absolute bone referenced alignment, using a ligament balancing technique does not automatically rotate the femoral component parallel to the transepicondylar axis. In this context we established the hypothesis that rotational alignment of the femoral component parallel to the transepicondylar axis (0° ± 3°) results in better outcome than alignment outside of this range. METHODS: We analysed 204 primary cemented mobile bearing total knee replacements five years postoperatively. Femoral component rotation was measured on axial radiographs using the condylar twist angle (CTA). Knee society score, range of motion as well as subjective rating documented outcome. RESULTS: In 96 knees the femoral component rotation was within the range 0 ± 3° (neutral rotation group), and in 108 knees the five-year postoperative rotational alignment of the femoral component was outside of this range (outlier group). Postoperative CTA showed a mean of 2.8° (±3.4°) internal rotation (IR) with a range between 6° external rotation (ER) and 15° IR (CI 95). No difference with regard to subjective and objective outcome could be detected. CONCLUSION: The present work shows that there is a large given natural variability in optimal rotational orientation, in this study between 6° ER and 15° IR, with numerous co-factors determining correct positioning of the femoral component. Further studies substantiating pre- and postoperative determinants are required to complete the understanding of resulting biomechanics in primary TKA.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

En plena era de la informació, les noves tecnologies s’han posat també al servei del’ensenyament. Per tal de proveir a l’estudiant dels mètodes més útils i eficients per donar suport al seu aprenentatge, han sorgit eines cada cop més acurades amb la intenció de proveird’una manera robusta tot allò que fins fa poc només es podia fer a les aules. Així va néixer el concepte d’e-learning.QuesTInSitu és una eina concebuda dins d’aquesta àrea que permet crear preguntesgeolocalitzades sobre mapes de GoogleMaps i organitzar-les com a rutes (qüestionaris), sobre el mapa que es desitgi del món. Aquest projecte ofereix la possibilitat de poder realitzar físicament l’activitat creada per QuesTInSitu mitjançant terminals mòbils amb connexió 3G i GPS. Per això, s’ha dissenyat un portal web adaptat, QuesTInSitu mobile, que permet realitzar les gimcanes geolocalitzades dissenyades prèviament. Malgrat aquest projecte està contingut enl’àrea del e-learning, ofereix un llarg ventall de possibilitats d’ús; publicitat o turisme en són alguns exemples.