Search results for "robotic"
showing 10 items of 636 documents
Robotic Versus Laparoscopic Staging for Early Ovarian Cancer: A Case-Matched Control Study.
2017
Abstract Study Objective To evaluate the feasibility, surgical outcome, and oncologic results observed after robotic staging compared with conventional laparoscopic staging for patients with early-stage ovarian cancer patients. Design A retrospective cohort study (Canadian Task Force classification II-2). Setting Catholic University of the Sacred Heart, Rome, Italy. Patients Ninety-six patients underwent minimally invasive staging for presumed stage I ovarian cancer; 32 underwent the robotic approach (cases), and 64 underwent the laparoscopic approach (controls). Measurements and Main Results There was no statistically significant difference between the 2 approaches with regard to final Fed…
Test Methods for the Evaluation of Manufacturing Mobile Manipulator Safety
2016
International audience; This paper presents a test methodology for evaluating the safety of mobile manipulators (robot arms mounted on mobile bases). This methodology addresses the safety concerns relevant to modern, agile, manufacturing practices in which mobile manipulators will play a significant role. We consider 1) the unique capabilities and anticipated uses of mobile manipulators and 2) the potential exemptions and special cases in which their behavior may be unpredictable or otherwise contrary to the safety requirements. Finally, we define metrics for assessing compliance with functional safety requirements and anticipated performance.
Ritz Solution for Transient Analysis of Variable-Stiffness Shell Structures
2020
The dynamic response of thin-walled structures is driven by mass and stiffness distribution. As such, variable-stiffness (VS) composites offer opportunities to tune structural dynamic responses. To this extent, efficient analysis tools become increasingly important for structural analysis and design purposes. In this work, an efficient and versatile Ritz method for free vibrations and linear transient analysis of VS doubly curved shell structures is presented. VS shell structures are modeled as an assembly of shell-like domains. The shell kinematics is based on the first-order shear deformation theory, and no further assumption is made on the shallowness or on the thinness of the structure.…
Tecnologie Robotiche e responsabilità extracontrattuale: un'analisi comparata
2022
Attraverso un esame delle soluzioni giuridiche derivanti, da un lato, dal percorso normativo posto in essere dall’Unione Europea e, dall’altro lato, da quanto emerge dal case law in via di formazione nel mondo, con questo lavoro si vuole dimostrare che l’avvento delle tecnologie robotiche non comporta necessariamente l'individuazione di nuove categorie giuridiche né induce mutamenti radicali nel sistema consolidato dei principi della responsabilità civile. In questa prospettiva si vuole verificare se il ricorso alla categoria della responsabilità oggettiva possa consentire un livello di tutela adeguato del danneggiato senza per ciò stesso limitare o incidere negativamente sulla opera di inn…
Optical flow estimation from multichannel spherical image decomposition
2011
International audience; The problem of optical flow estimation is largely discussed in computer vision domain for perspective images. It was also proven that, in terms of optical flow analysis from these images, we have difficulty distinguishing between some motion fields obtained with little camera motion. The omnidirectional cameras provided images with large filed of view. These images contain global information about motion and allow to remove the ambiguity present in perspective case. Nevertheless, these images contain significant radial distortions that is necessary to take into account when treating these images to estimate the motion. In this paper, we shall describe new way to comp…
Collision Avoidance with Potential Fields Based on Parallel Processing of 3D-Point Cloud Data on the GPU
2014
In this paper we present an experimental study on real-time collision avoidance with potential fields that are based on 3D point cloud data and processed on the Graphics Processing Unit (GPU). The virtual forces from the potential fields serve two purposes. First, they are used for changing the reference trajectory. Second they are projected to and applied on torque control level for generating according nullspace behavior together with a Cartesian impedance main control loop. The GPU algorithm creates a map representation that is quickly accessible. In addition, outliers and the robot structure are efficiently removed from the data, and the resolution of the representation can be easily ad…
Modeling and designing a robotic swarm: A quantum computing approach
2023
Nature is a neverending source of inspiration for technology. Quantum physics suggests applications to- ward quantum computing. Swarms’ self-organization leads to robotic swarm developments. Here, quantum computing is applied to swarm robotics. We model local interactions with a quantum circuit, testing it on simulators and quantum computers. To relate local with global behavior, we develop a block matrix-based model. Diagonal sub-matrices contain information on single robots; off-diagonal sub-matrices are the pairwise interaction terms. Comparing different swarms means comparing different block matrices. Choosing initial values and computation rules for off-diagonal blocks (with a particul…
Impact of operation duration on postoperative outcomes of minimally-invasive right colectomy
2022
Aim: Operation time (OT) is a key operational factor influencing surgical outcomes. The present study aimed to analyse whether OT impacts on short-term outcomes of minimally-invasive right colectomies by assessing the role of surgical approach (robotic [RRC] or laparoscopic right colectomy [LRC]), and type of ileocolic anastomosis (i.e., intracorporal [IA] or extra-corporal anastomosis [EA]). Methods: This was a retrospective analysis of the Minimally-invasivE surgery for oncological Right ColectomY (MERCY) Study Group database, which included adult patients with nonmetastatic right colon adenocarcinoma operated on by oncological RRC or LRC between January 2014 and December 2020. Univariate…
Robots, privacy and data protection
2015
A research on robots, drones and privacy/data protection, with focus on cloud robotics, Internet of Things, contracts and the use cases of telepresence, courier robots and smart cities quadricopters.
Chirurgische Ausbildung im digitalen Zeitalter – Virtual Reality, Augmented Reality und Robotik im Medizinstudium
2021
The digital transformation of healthcare is changing the medical profession. Augmented/Virtual Reality (AR/VR) and robotics are being increasingly used in different clinical contexts and require supporting education and training, which must begin within the medical school. There is currently a large discrepancy between the high demand and the number of scientifically proven concepts. The aim of this thesis was the conceptual design and structured evaluation of a newly developed learning/teaching concept for the digital transformation of medicine, with a special focus on the influence of surgical teaching.Thirty-five students participated in three courses of the blended learning curriculum "…