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Wire-based robots for upper-limb rehabilitation
G. Rosati,P. Gallina,A. Rossi,S. Masiero 한국과학기술원 인간친화 복지 로봇 시스템 연구센터 2006 International Journal of Assistive Robotics and Me Vol.7 No.2
In the last decades, many specialized research centers attempted to employ robots in the rehabilitation field. Especially orthopedic rehabilitation and neurorehabilitation benefited from these cutting-edge technologies. Although a broad literature on the benefits of robot-assisted rehabilitation assesses the effectiveness of the direction taken by scientists, only in few cases a robotic lab-oriented prototype leaded to a commercial robot. This apparent contradiction should not deter researchers from continuing improving robotic tools and related rehabilitation protocols. On the contrary, it should be a starting point for a new generation of rehabilitation robots capable of shrinking the gap between academic lab-oriented ideas and affordable clinical solutions.<BR> According to this philosophy, several underrated problems are to be taken into account. In particular a rehabilitation robot has to be cost-affordable, lightweight, easily transportable and equipped with a user-friendly interface suitable for non trained operators. Moreover, not only safety issues need to be fully addressed but also the tolerability of the robot by the patient.<BR> Starting from these considerations, a new generation of wire-based robots for upper-limb rehabilitation is proposed. In particular, the work focuses on 2 wire?based prototypes which can be classified according to the number of degrees of freedom (DoF): the NeReBot (NEuroREhabilitation roBOT, 3 DoF) and the MariBot (MARIsa roBOT, 5 DoF). Experimental results performed in a clinical environment showed the effectiveness of the wire-based robot-assisted rehabilitation. At the same time, they helped to trace new guidelines for future work.
GENERATING BRAND AUTHENTICITY: CASES OF TUSCAN WINE COMPANIES
Silvia Ranfagni,Aldo Burresi,Massimo Rosati 글로벌지식마케팅경영학회 2015 Global Fashion Management Conference Vol.2015 No.06
Our work analyses the theme of authenticity as a process of self-appropriation pursued by companies during their existence. The goal is to investigate this process by identifying the trade-off companies have faced. By doing this, we propose to recognize the sources of brand authenticity. The research methodology is based on the case analysis of Tuscan wine companies that are emblematic for the topic investigated.
An OSSE Study for Deep Argo Array using the GFDL Ensemble Coupled Data Assimilation System
장유순,Shaoqing Zhang,Anthony Rosati,Gabriel A. Vecchi,Xiaosong Yang 한국해양과학기술원 2018 Ocean science journal Vol.53 No.2
An observing system simulation experiment (OSSE) using an ensemble coupled data assimilation system was designed to investigate the impact of deep ocean Argo profile assimilation in a biased numerical climate system. Based on the modern Argo observational array and an artificial extension to full depth, “observations” drawn from one coupled general circulation model (CM2.0) were assimilated into another model (CM2.1). Our results showed that coupled data assimilation with simultaneous atmospheric and oceanic constraints plays a significant role in preventing deep ocean drift. However, the extension of the Argo array to full depth did not significantly improve the quality of the oceanic climate estimation within the bias magnitude in the twin experiment. Even in the “identical” twin experiment for the deep Argo array from the same model (CM2.1) with the assimilation model, no significant changes were shown in the deep ocean, such as in the Atlantic meridional overturning circulation and the Antarctic bottom water cell. The small ensemble spread and corresponding weak constraints by the deep Argo profiles with medium spatial and temporal resolution may explain why the deep Argo profiles did not improve the deep ocean features in the assimilation system. Additional studies using different assimilation methods with improved spatial and temporal resolution of the deep Argo array are necessary in order to more thoroughly understand the impact of the deep Argo array on the assimilation system.
Improving Performance of Cable Robots by Adaptively Changing Minimum Tension in Cables
Saeed Abdolshah,Giulio Rosati 한국정밀공학회 2017 International Journal of Precision Engineering and Vol.18 No.5
Higher tension in cables of a cable-driven parallel robot is preferable due to increased stiffness, higher disturbance rejection, better trajectory tracking performance and more precise motion; however, cable tension augmentation can result in saturation of actuators and high-energy consumption. This paper is devoted to investigate if dynamically changing the minimum tension in cables can allow achieving an efficient motion in term of power consumption, while preserving good trajectory tracking performance. The proposed method changes the minimum tension on-the-fly according to stiffness, dynamics of the system, and error values as feedback. A simple cable robot prototype has been used to compare traditional fixed minimum tension utilization, and the proposed approach. Experimental results showed that application of our method improves motion accuracy and reduces energy consumption of the robot.
Agostino Nuzzolo,Antonio Comi,Luca Rosati 서울시립대학교 도시과학연구원 2014 도시과학국제저널 Vol.18 No.2
The growing necessity to improve city sustainability and liveability has pushed local administrators to look also at medium/long-term city logistics measures, such as land-use governance policies. In order to assess long-term scenarios, it is necessary to have models and methods able to take into account the effects on shopping mobility and goods restocking, generated by these classes of measures (e.g. relocation of shopping zones). Besides, we have to consider that modifications of shopping attitudes, deriving from changes of demographic and socio-economic characteristics of end consumers, can impact on purchasing behaviour and hence on restocking mobility. This paper discusses a number of issues related to the simulation of medium/long-term scenarios and presents a system of models that consider shopping mobility and restocking jointly. The presented shopping demand models, in combination with urban restocking models, are implemented within a simulation support system named City Logistics Analysis and Simulation Support System and are used to assess the effects on the freight restocking due to demographic and socio-economic variations including some hypotheses on new land-use development governance measures in a medium-size urban area. The main results confirm the modelling goodness and, at the same time, demonstrate that changes in demographic and socio-economic characteristics could cause relevant effects, in particular increasing car use in shopping mobility. The growing e-shopping could limit the negative effects of these changes, but the impacts of home deliveries have to be considered. The relocation of commercial and logistics centres, closer to the residential distribution, could drive a different restocking pattern with a consequent reduction in freight vehicle mobility. Anyway, this reduction is not very relevant and therefore further city logistics measures have to be implemented.