9 research outputs found

    er.autopilot 1.0: The Full Autonomous Stack for Oval Racing at High Speeds

    Full text link
    The Indy Autonomous Challenge (IAC) brought together for the first time in history nine autonomous racing teams competing at unprecedented speed and in head-to-head scenario, using independently developed software on open-wheel racecars. This paper presents the complete software architecture used by team TII EuroRacing (TII-ER), covering all the modules needed to avoid static obstacles, perform active overtakes and reach speeds above 75 m/s (270 km/h). In addition to the most common modules related to perception, planning, and control, we discuss the approaches used for vehicle dynamics modelling, simulation, telemetry, and safety. Overall results and the performance of each module are described, as well as the lessons learned during the first two events of the competition on oval tracks, where the team placed respectively second and third.Comment: Preprint: Accepted to Field Robotics "Opportunities and Challenges with Autonomous Racing" Special Issu

    Conformational and electronic properties of a microperoxidase in aqueous solution: A computational study

    No full text
    A theoretical study of the conformational properties of a small heme peptide in aqueous solution is carried out by classical, long-timescale molecular dynamics simulations. The electronic properties of this species, that is, the relative energies of its excited electronic states and the redox potential, are reproduced and related to the conformational behavior using the perturbed matrix method and basic statistical mechanics. Our results show an interesting coupling between the conformational transitions and the electronic properties. These investigatons, beyond the biophysically relevant results addressing the long-stading question of the actual role of the enzyme structure on the enzyme activity, are also of some methodological interest since they offer a further computational perspective for incuding the electronic degrees of freedom into the modeling of rather complex molecular systems. © 2005 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim

    Risk of surgical site infections following hip and knee arthroplasty. Results of the ischia-gisio study

    Get PDF
    Introduzione. L'infezione del sito chirurgico (SSI) è una delle principali complicanze a seguito dell'inserimento della protesi dell'anca o del ginocchio. Lo scopo del presente studio era di descrivere i tassi di SSI e i fattori di rischio associati durante le procedure di protesi dell'anca e del ginocchio negli ospedali italiani. Metodi. Gli ospedali italiani sono stati invitati a unirsi al progetto ISChIA (Infezioni del sito chirurgico in chirurgia di artroplastica) e hanno partecipato allo studio su base volontaria. La sorveglianza SSI è stata eseguita in base al protocollo SSI di collegamento ospedaliero per il controllo delle infezioni attraverso la sorveglianza (HELICS). La popolazione dello studio era composta da tutti i pazienti che avevano avuto una protesi protesica del ginocchio o dell'anca tra marzo 2010 e febbraio 2011. Sono state incluse solo operazioni elettive. Risultati. Sono stati inclusi un totale di 14 ospedali e 1285 procedure chirurgiche. L'incidenza cumulativa di SSI è stata di 1,3 per 100 anca e 2,4 per 100 interventi chirurgici al ginocchio; una tendenza positiva significativa delle incidenze SSI è stata osservata con l'aumento dell'indice di rischio SSI. Nell'analisi multivariata, considerando le procedure dell'anca, il singolo fattore di rischio indipendente associato alla SSI era la lunghezza dell'operazione (RR: 4,54; IC al 95%: 1,06-19,48). Per le procedure al ginocchio, non è stato identificato alcun fattore di rischio significativo. Conclusioni. Nel presente studio, l'incidenza cumulativa SSI era nell'intervallo di dati europei. Tuttavia, è necessario un numero maggiore di operazioni per stimare meglio le tariffe SSI. È già stata condotta una seconda edizione del progetto ISChIA e i risultati dei due sondaggi forniranno nuove conoscenze per approfondire le nostre conoscenze per il controllo delle infezioni.Background. Surgical Site Infection (SSI) is one of the major complications following insertion of hip or knee prosthesis. The aim of the present study was to describe rates of SSIs and associated risk factors during hip and knee prosthesis procedures in Italian hospitals. Methods. Italian hospitals were invited to join the ISChIA (Surgical Site Infections in Arthroplasty Surgery) project and participated in the study on a voluntary basis. SSI surveillance was performed according to the Hospitals in Europe Link for Infection Control through Surveillance (HELICS)-SSI protocol. The study population consisted of all patients who had a prosthetic knee or hip joint replacement between March 2010 and February 2011. Only elective operations were included. Results. A total of 14 hospitals and 1285 surgical procedures were included. SSI cumulative incidence was 1.3 per 100 hip and 2.4 per 100 knee surgical procedures; a significant positive trend of SSI incidences was observed with increasing SSI risk index. In multivariate analysis, considering hip procedures, the single independent risk factor associated to SSI was operation length (RR: 4.54; 95%CI: 1.06-19.48). For knee procedures, no significant risk factor was identified. Conclusions. In the present study, SSI cumulative incidence was in the range of European data. However, a larger number of operations is needed to better estimate SSI rates. A second edition of the ISChIA project has been already conducted and results of the two surveys will provide new insight to further our knowledge for infection control

    Risk of surgical site infections following hip and knee arthroplasty. Results of the ischia-gisio study

    Get PDF
    Introduzione. L'infezione del sito chirurgico (SSI) è una delle principali complicanze a seguito dell'inserimento della protesi dell'anca o del ginocchio. Lo scopo del presente studio era di descrivere i tassi di SSI e i fattori di rischio associati durante le procedure di protesi dell'anca e del ginocchio negli ospedali italiani. Metodi. Gli ospedali italiani sono stati invitati a unirsi al progetto ISChIA (Infezioni del sito chirurgico in chirurgia di artroplastica) e hanno partecipato allo studio su base volontaria. La sorveglianza SSI è stata eseguita in base al protocollo SSI di collegamento ospedaliero per il controllo delle infezioni attraverso la sorveglianza (HELICS). La popolazione dello studio era composta da tutti i pazienti che avevano avuto una protesi protesica del ginocchio o dell'anca tra marzo 2010 e febbraio 2011. Sono state incluse solo operazioni elettive. Risultati. Sono stati inclusi un totale di 14 ospedali e 1285 procedure chirurgiche. L'incidenza cumulativa di SSI è stata di 1,3 per 100 anca e 2,4 per 100 interventi chirurgici al ginocchio; una tendenza positiva significativa delle incidenze SSI è stata osservata con l'aumento dell'indice di rischio SSI. Nell'analisi multivariata, considerando le procedure dell'anca, il singolo fattore di rischio indipendente associato alla SSI era la lunghezza dell'operazione (RR: 4,54; IC al 95%: 1,06-19,48). Per le procedure al ginocchio, non è stato identificato alcun fattore di rischio significativo. Conclusioni. Nel presente studio, l'incidenza cumulativa SSI era nell'intervallo di dati europei. Tuttavia, è necessario un numero maggiore di operazioni per stimare meglio le tariffe SSI. È già stata condotta una seconda edizione del progetto ISChIA e i risultati dei due sondaggi forniranno nuove conoscenze per approfondire le nostre conoscenze per il controllo delle infezioni.Background. Surgical Site Infection (SSI) is one of the major complications following insertion of hip or knee prosthesis. The aim of the present study was to describe rates of SSIs and associated risk factors during hip and knee prosthesis procedures in Italian hospitals. Methods. Italian hospitals were invited to join the ISChIA (Surgical Site Infections in Arthroplasty Surgery) project and participated in the study on a voluntary basis. SSI surveillance was performed according to the Hospitals in Europe Link for Infection Control through Surveillance (HELICS)-SSI protocol. The study population consisted of all patients who had a prosthetic knee or hip joint replacement between March 2010 and February 2011. Only elective operations were included. Results. A total of 14 hospitals and 1285 surgical procedures were included. SSI cumulative incidence was 1.3 per 100 hip and 2.4 per 100 knee surgical procedures; a significant positive trend of SSI incidences was observed with increasing SSI risk index. In multivariate analysis, considering hip procedures, the single independent risk factor associated to SSI was operation length (RR: 4.54; 95%CI: 1.06-19.48). For knee procedures, no significant risk factor was identified. Conclusions. In the present study, SSI cumulative incidence was in the range of European data. However, a larger number of operations is needed to better estimate SSI rates. A second edition of the ISChIA project has been already conducted and results of the two surveys will provide new insight to further our knowledge for infection control

    Risk of surgical site infections following hip and knee arthroplasty : results of the ISChIA-GISIO study

    Get PDF
    Background Surgical Site Infection (SSI) is one of the major complications following insertion of hip or knee prosthesis. The aim of the present study was to describe rates of SSIs and associated risk factors during hip and knee prosthesis procedures in Italian hospitals Methods Italian hospitals were invited to join the ISChIA (Surgical Site Infections in Arthroplasty Surgery) project and participated in the study on a voluntary basis. SSI surveillance was performed according to the Hospitals in Europe Link for Infection Control through Surveillance (HELICS) -SSI protocol. The study population consisted of all patients who had a prosthetic knee or hip joint replacement between March 2010 and February 2011. Only elective operations were included Results A total of 14 hospitals and 1285 surgical procedures were included. SSI cumulative incidence was 1.3 per 100 hip and 2.4 per 100 knee surgical procedures; a significant positive trend of SSI incidences was observed with increasing SSI risk index. In multivariate analysis, considering hip procedures, the single independent risk factor associated to SSI was operation length (RR: 4.54; 95%CI: 1.06-19.48). For knee procedures, no significant risk factor was identified Conclusions In the present study, SSI cumulative incidence was in the range of European data. However, a larger number of operations is needed to better estimate SSI rates. A second edition of the ISChIA project has been already conducted and results of the two surveys will provide new insight to further our knowledge for infection contro

    General Anesthesia Versus Conscious Sedation and Local Anesthesia During Thrombectomy for Acute Ischemic Stroke

    No full text
    As numerous questions remain about the best anesthetic strategy during thrombectomy, we assessed functional and radiological outcomes in stroke patients treated with thrombectomy in presence of general anesthesia (GA) versus conscious sedation (CS) and local anesthesia (LA)
    corecore