The network structure of visited locations according to geotagged social media photos

Businesses, tourism attractions, public transportation hubs and other points of interest are not isolated but part of a collaborative system. Making such collaborative network surface is not always an easy task. The existence of data-rich environments can assist in the reconstruction of collaborative networks. They shed light into how their members operate and reveal a potential for value creation via collaborative approaches. Social media data are an example of a means to accomplish this task. In this paper, we reconstruct a network of tourist locations using fine-grained data from Flickr, an online community for photo sharing. We have used a publicly available set of Flickr data provided by Yahoo! Labs. To analyse the complex structure of tourism systems, we have reconstructed a network of visited locations in Europe, resulting in around 180,000 vertices and over 32 million edges. An analysis of the resulting network properties reveals its complex structure.Comment: 8 pages, 3 figure

Mobile Medical Education (MoMEd) - how mobile information resources contribute to learning for undergraduate clinical students - a mixed methods study

BACKGROUND: Mobile technology is increasingly being used by clinicians to access up-to-date information for patient care. These offer learning opportunities in the clinical setting for medical students but the underlying pedagogic theories are not clear. A conceptual framework is needed to understand these further. Our initial questions were how the medical students used the technology, how it enabled them to learn and what theoretical underpinning supported the learning. METHODS: 387 medical students were provided with a personal digital assistant (PDA) loaded with medical resources for the duration of their clinical studies. Outcomes were assessed by a mixed-methods triangulation approach using qualitative and quantitative analysis of surveys, focus groups and usage tracking data. RESULTS: Learning occurred in context with timely access to key facts and through consolidation of knowledge via repetition. The PDA was an important addition to the learning ecology rather than a replacement. Contextual factors impacted on use both positively and negatively. Barriers included concerns of interrupting the clinical interaction and of negative responses from teachers and patients. Students preferred a future involving smartphone platforms. CONCLUSIONS: This is the first study to describe the learning ecology and pedagogic basis behind the use of mobile learning technologies in a large cohort of undergraduate medical students in the clinical environment. We have developed a model for mobile learning in the clinical setting that shows how different theories contribute to its use taking into account positive and negative contextual factors.The lessons from this study are transferable internationally, to other health care professions and to the development of similar initiatives with newer technology such as smartphones or tablet computer

Effects of fatigue on patellar tendon loading during the landing phases of a stop-jump movement

Therefore, the purpose of this study was to establish whether there were any significant differences in the patellar tendon forces generated by athletes during the landing phases of a stop-jump (SJ) movement before and after fatigue induced by repetitive SSC exercises. Eighteen soccer and basketball players performed a SJ movement before and after a fatigue protocol. During each SJ trial, three-dimensional kinematic, kinetic and electromyographic data for each subject’s lower limbs were recorded. When fatigued, athletes significantly (p \u3c 0.05) reduced their patellar tendon forces during the SJ movement by reducing knee and hip flexion. Whether “stiff limb” landings reduces the risk of developing patellar tendinopathy by decreasing patellar tendon loading during jumping requires further investigation

Asymptomatic players with a patellar tendon abnormality do not adapt their landing mechanics when fatigued

This study aimed to explore how asymptomatic athletes with a patellar tendon abnormality (PTA), who are at high risk of developing patellar tendinopathy, alter their landing technique and net patellar tendon loads generated in response to fatigue. Seven asymptomatic players with a PTA performed five successful vertical stop-jump trials before and after a fatigue protocol. Fatigue protocol involved participants repeatedly performing sets of 30 submaximal jump exercises on a sledge apparatus followed by 30 s rest until the task failure criteria were reached. Three-dimensional ground reaction forces, lower limb kinematics and net peak patellar tendon force were recorded during the stop-jump task. No significant between-fatigue condition differences in net patellar tendon loading, or most secondary outcome variables were observed. Only some fatigue changes were seen during the vertical landing phase. Asymptomatic PTA participants did not modify their landing technique or net patellar tendon loading during a stop-jump task in response to fatigue. The lack of between-fatigue condition differences displayed by the asymptomatic PTA participants during both landing phases suggest that these individuals may not be capable of sufficient movement variability in their landing strategies to adapt to fatigue

Lower limb movement symmetry cannot be assumed when investigating the stop-jump landing

Assumed When Investigating the Stop-Jump Landing. Med. Sci. Sports Exerc., Vol. 44, No. 6, pp. 1123-1130, 2012. Purpose: When investigating lower limb landing biomechanics, researchers often assume movement symmetry between a participant\u27s right and left lower limbs for the simplicity of data collection and analysis, although landing tasks often involve dual-limb motion. However, whether lower limb symmetry can be assumed when investigating dynamic, sport-specific movements such as the stop-jump has not been investigated. Therefore, this study aimed to determine whether there were any significant differences in selected kinetic, kinematic, and muscle activation patterns characterizing lower limb biomechanics displayed by the dominant limb compared with the nondominant limb of participants during a stop-jump task. Methods: Sixteen male athletes with normal patellar tendons on diagnostic imaging performed five successful stop-jump trials. Patellar tendon forces (FPT), ground reaction forces, three-dimensional kinematics, and EMG activity of seven lower limb muscles were recorded for the dominant and nondominant lower limbs during each trial. Results: During the horizontal landing phase, the dominant lower limb sustained a significantly higher FPT and peak net knee joint extension moment compared with the nondominant lower limb. Furthermore, during the vertical landing phase, the dominant lower limb sustained significantly lower vertical but higher posterior ground reaction forces compared with the nondominant lower limb. Other variables did not significantly vary as a function of lower limb dominance. Conclusions: It is recommended that researchers clearly identify their primary outcome variables and ensure that their experimental design, particularly in terms of lower limb dominance, provides an appropriate framework to investigate possible mechanics underlying unilateral and bilateral knee joint injuries during dual-limb movements such as the stop-jump task

SALUT LES COPAINS - JOHNNY HALLYDAY / Johnny HALLYDAY, avec orchestre

Comprend : WAP-DOU-WAP ("Tu aimes le twist") - twist / JIL et JAN et Johnny HALLYDAY - SI TU ME TELEPHONES / G. GARVARENTZ et C. NICOLAS - RETIENS LA NUIT : de la bande originale du film "Les Parisiennes" / Ch. AZNAVOUR et G. GARVARENTZ - NOUS QUAND ON S'EMBRASSE ("High School confidential") / R. HARGRAVE - J. JEE-LEEWIS - JIL et JEAN - TWISTIN' U.S.A. / K. MANN - G. BERTRET et R. DESBOIS - TOI QUI REGRETTES / Johnny HALLYDAY et JIL et JEAN - SAM'DI SOIR : de la bande originale du film "Les Parisiennes" / Charles AZNAVOUR et GARVARENTZ - VIENS DANSER LE TWIST ("Let's twist again") - en français / K. MANN - D. APPELL et G. GOSSET - LET'S TWIST AGAIN ("Viens danser le twist") - en anglais / K. MANN - D. APPELL et G. GOSSET - DOUCE VIOLENCE : de la bande originale du film : "DOUCE VIOLENCE" / G. GARVARENTZ et C. NICOLAS - DANSE LE TWIST AVEC MOI ("Dance the mess around") / K. MANN - D. APPELL et J. DAMBROIS - TU PEUX LA PRENDRE ("You can have her") / B. COOK - A. SALVET et Lucien MORISSE - AVEC UNE POIGNEE DE TERRE ("A hundred pounds of clay") / ELGIN - DIXON ROGERS - REVIL et Manou ROBLIN - IL FAUT SAISIR SA CHANCE : de la bande originale du film "Douce violence" / GARVARENTZ et Charles AZNAVOURBnF-Partenariats, Collection sonore - BelieveContient une table des matière