scholarly journals Correction to: Dynamic navigation in endodontics

2021 ◽  
Vol 5 (1) ◽  
Author(s):  
Niraj Kinariwala ◽  
Ramóna Kiscsatári ◽  
Mark Adam Antal
Keyword(s):  
Dynamic Navigation

SWaP Reduction for High Dynamic Navigation Grade Accelerometer Based on Quartz VBA Technology

2021 ◽  
Author(s):  
Rachid Taibi ◽  
Olivier Jolly ◽  
Thomas Kerrien ◽  
Pascal Labarthe ◽  
Karl Aubry ◽  
...  
Keyword(s):  
Dynamic Navigation ◽  
High Dynamic

Accuracy of dynamic navigation in implant surgery: A systematic review and meta‐analysis

2021 ◽  
Author(s):  
Shi‐Min Wei ◽  
Yu Zhu ◽  
Jian‐Xu Wei ◽  
Chu‐Nan Zhang ◽  
Jun‐Yu Shi ◽  
...  
Keyword(s):  
Systematic Review ◽  
Meta Analysis ◽  
Implant Surgery ◽  
Dynamic Navigation

Application of social constraints for dynamic navigation considering semantic annotations on geo-referenced maps

2021 ◽  
Author(s):  
Joao Pedro Vilasboas ◽  
Marcelo Sa Coqueiro Sampaio ◽  
Giovane Fernandes Moreira ◽  
Adriel Bastos Souza ◽  
Jose Diaz-Amado ◽  
...  
Keyword(s):  
Social Constraints ◽  
Semantic Annotations ◽  
Dynamic Navigation

One Kind of Data Acquisition System Used in PC104 Embedded Navigation Computer

2013 ◽  
Vol 347-350 ◽  
pp. 24-27 ◽  
Author(s):  
Zhao Hua Liu ◽  
Yu Liang Mao ◽  
Chun Lei Song
Keyword(s):  
Data Acquisition ◽  
Data Acquisition System ◽  
Acquisition System ◽  
Time Dynamic ◽  
Logic Control ◽  
Navigation Computer ◽  
Dynamic Navigation ◽  
Acquisition Speed ◽  
Hardware Circuit ◽  
Circuit Configuration

In order to meet requirements of real-time dynamic navigation system, one multi-channels synchronization data acquisition system was designed based on PC104 bus. It can achieve simultaneous sampling of multiple channels data in one conversion cycle of ADC. The logic control is performed by FPGA, FIFO integrated by FPGA is used as buffer, so we can use resources of FPGA in large. At the same time, this design simplified the hardware circuit and improved circuit configuration flexibility. Using interrupt mode to read data into the FIFO, so it enhanced the data acquisition speed and reduced the burden on the navigation computer. Tests proved this system is efficient and feasible.

scholarly journals Crowd-Steer: Realtime Smooth and Collision-Free Robot Navigation in Densely Crowded Scenarios Trained using High-Fidelity Simulation

2020 ◽  
Author(s):  
Jing Liang ◽  
Utsav Patel ◽  
Adarsh Jagan Sathyamoorthy ◽  
Dinesh Manocha
Keyword(s):  
Robot Navigation ◽  
High Fidelity ◽  
High Fidelity Simulation ◽  
Differential Drive ◽  
Reward Function ◽  
Dynamic Navigation ◽  
Trajectory Length ◽  
Dense Crowds ◽  
Dense Crowd ◽  
Mean Time

We present a novel high fidelity 3-D simulator that significantly reduces the sim-to-real gap for collision avoidance in dense crowds using Deep Reinforcement Learning (DRL). Our simulator models realistic crowd and pedestrian behaviors, along with friction, sensor noise and delays in the simulated robot model. We also describe a technique to incrementally control the randomness and complexity of training scenarios to achieve better convergence and generalization capabilities. We demonstrate the effectiveness of our simulator by training a policy that fuses data from multiple perception sensors such as a 2-D lidar and a depth camera to detect pedestrians and computes smooth, collision-free velocities. Our novel reward function and multi-sensor formulation results in smooth and unobtrusive navigation. We have evaluated the learned policy on two differential drive robots and evaluate its performance in new dense crowd scenarios, narrow corridors, T and L-junctions, etc. We observe that our algorithm outperforms prior dynamic navigation techniques in terms of metrics such as success rate, trajectory length, mean time to goal, and smoothness.

scholarly journals Dynamic Navigation Method with Multisubstations Based on Doppler Shift

2015 ◽  
Vol 2015 ◽  
pp. 1-5
Author(s):  
Jianyang Zhao ◽  
Weihong Ding ◽  
Zujun Ding ◽  
Lianfeng Shen ◽  
Jin Zhao
Keyword(s):  
Simulation Analysis ◽  
Good Effect ◽  
Frequency Shifts ◽  
Doppler Shifts ◽  
Mobile Navigation ◽  
Dynamic Navigation ◽  
Movement Parameters ◽  
Navigation Test ◽  
New Applications ◽  
Navigation Method

The mobile terminals must be compensated for the Doppler effect in their moving communication. This special characteristic of mobile communication can be developed in some new applications. This paper proposes methods to realize mobile navigation calculation via Doppler shifts. It gives the theory of relationship between the motion parameters, like directions and speed, and frequency shifts caused by multibase stations. The simulation illustrates how to compute the movement parameters of numerical calculation and what should be care for the problem near angle 90 degree. It also gives an application with Google map and dynamical locating position and direction on a mobile phone by public wireless network. Given the simulation analysis and navigation test, the results show that this method has a good effect.

Real-Time Image-Guided Navigation in the Management of Alveolar Cleft Repair

2021 ◽  
pp. 105566562110577
Author(s):  
Yuying Zhang ◽  
Jiawei Dai ◽  
Xiazhou Fu ◽  
Jiegang Yang ◽  
Yuchuan Fu ◽  
...  
Keyword(s):  
Real Time ◽  
Navigation System ◽  
Preoperative Planning ◽  
Surgical Simulation ◽  
Surgical Navigation ◽  
Computer Assisted ◽  
Alignment Procedure ◽  
Alveolar Cleft ◽  
Image Guided ◽  
Dynamic Navigation

Objectives: To present the use of dynamic navigation system in the repair of alveolar cleft. Patients and Participants: A total of three non-syndromic patients with unilateral alveolar cleft were involved in this study. Real-time computer-aided navigation were used to achieve restoration and reconstruction with standardized surgical technique. Methods: With the individual virtual 3-dimensional (3-D) modeling based on computed tomography (CT) data, preoperative planning and surgical simulation were carried out with the navigation system. During preoperative virtual planning, the defect volume or the quantity of graft is directly assessed at the surgical region. With the use of this system, the gingival periosteum flap incision can be tracked in real-time, and the bone graft can be navigated under the guidance of the 3-D views until it matches the preoperatively planned position. Results: Three patients with alveolar cleft were successfully performed under navigation guidance. Through the model alignment procedure, accurate matches between the actual intraoperative position and the CT images were achieved within the systematic error of 0.3 mm. The grafted bone was implanted according to the preoperative plan with the aid of instrument- and probe-based navigation. All the patients were healed well without serious complications. Conclusions: These findings suggest that image-guided surgical navigation, including preoperative planning, surgical simulation, postoperative assessment, and computer-assisted navigation was feasible and yielded good clinical outcomes. Clinical relevance: This dynamic navigation could be proved to be a valuable option for this complicated surgical procedure in the management of alveolar cleft repair.

scholarly journals Novel Parallelogram Set-Membership Estimation Dynamic Navigation Method for Osteotomy Surgical Robot

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 104143-104154
Author(s):  
Danyang Qu ◽  
He Zhang ◽  
Guoli Song ◽  
Yiwen Zhao ◽  
Xingang Zhao ◽  
...  
Keyword(s):  
Surgical Robot ◽  
Set Membership ◽  
Dynamic Navigation ◽  
Navigation Method

scholarly journals Ultrasonic Navigation for the Treatment of Medication-Related Jaw Osteonecrosis Involving the Inferior Alveolar Nerve: A Case Report and Protocol Review

2020 ◽  
Vol 3 (4) ◽  
pp. 70
Author(s):  
Gerardo Pellegrino ◽  
Francesca Pavanelli ◽  
Agnese Ferri ◽  
Giuseppe Lizio ◽  
Roberto Parrulli ◽  
...  
Keyword(s):  
Inferior Alveolar Nerve ◽  
Mandibular Canal ◽  
Surgical Removal ◽  
Hard Tissue ◽  
Anatomical Structures ◽  
Osteonecrosis Of The Jaws ◽  
Dynamic Navigation ◽  
The Right ◽  
Ultrasonic Navigation ◽  
Protocol Review

Dynamic navigation (DN) is a computer-guided technique employed in different surgical fields and recently adopted in dental implantology to improve the accuracy of dental implant insertion. Medication-related osteonecrosis of the jaws (MRONJ) often requires the surgical removal of the impaired, hard tissue, trying at the same time to spare the healthy tissue and the noble anatomical structures. A case of extensive bilateral medication-related osteonecrosis, with the symptomatic involvement of the right mandibular canal, was successfully resolved with the use of ultrasonic surgery associated with a dynamic navigation, in order to limit the invasiveness of the surgical approach improving its reliability and accuracy. The usefulness of this technology in the management of MRONJ can be considered in future clinical trials to confirm the advantages and standardize the technique.

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