scholarly journals Performance Evaluation of a Modular Design of Wind Tower with Wetted Surfaces

Energies ◽  
2017 ◽  
Vol 10 (7) ◽  
pp. 845 ◽  
Author(s):  
Sajad Khani ◽  
Mehdi Bahadori ◽  
Alireza Dehghani-Sanij ◽  
Ahmad Nourbakhsh
2018 ◽  
Vol 15 (4) ◽  
pp. 172988141879069 ◽  
Author(s):  
Marco Ceccarelli ◽  
Daniele Cafolla ◽  
Matteo Russo ◽  
Giuseppe Carbone

A service robot for Cultural Heritage frames is proposed as a novel robotic platform with a modular design for both ground locomotion and flight capability. The peculiarities of the system are discussed by performance evaluation via simulation. A prototype has been built and tested both to prove the feasibility of the proposed design and to characterize its operation performance.


2016 ◽  
Vol 13 (2) ◽  
pp. 31-37 ◽  
Author(s):  
Selcen Nur Erikci Çelik ◽  
Gülay Zorer Gedik ◽  
Burcu Parlakyıldız ◽  
Mevlüt Gürsel Çetin ◽  
Aliihsan Koca ◽  
...  

2018 ◽  
Vol 1 (1) ◽  
pp. 24-29
Author(s):  
Santosh Baburao Jadhav ◽  
Kishor K Dhande ◽  
Suhas P Deshmukh

In this study, modular design for compliant stage using a parallelogram flexure module is proposed. The material of the proposed stages chosen is Aluminium alloy T6-6051 due to excellent phase stability, low internal stresses, low density etc. The stage is driven by a linear electromagnetic actuator i.e. voice coil actuator. The preliminary static structural analysis is used to determine the range of motion, stiffness by considering stress limitations. FEA results show a maximum range of motion up to 30mm without exceeding stress limit of 275 Mpa. The proposed mechanisms provide low stiffness in the degree of freedom directions and provide large stiffness in the degree of constraint direction.so it is adequately constrained. The stage provides high precision and repeatability with an increased range of motion, minimal parasitic motions (i.e.150 microns) and limited cross axes coupling.


Sensors ◽  
2021 ◽  
Vol 21 (20) ◽  
pp. 6857
Author(s):  
Gabriel Tomiatti Andreazi ◽  
Júlio Cezar Estrella ◽  
Sarita Mazzini Bruschi ◽  
Roger Immich ◽  
Daniel Guidoni ◽  
...  

The high demand for data processing in web applications has grown in recent years due to the increased computing infrastructure supply as a service in a cloud computing ecosystem. This ecosystem offers benefits such as broad network access, elasticity, and resource sharing, among others. However, properly exploiting these benefits requires optimized provisioning of computational resources in the target infrastructure. Several studies in the literature improve the quality of this management, which involves enhancing the scalability of the infrastructure, either through cost management policies or strategies aimed at resource scaling. However, few studies adequately explore performance evaluation mechanisms. In this context, we present the MoHRiPA—Management of Hybrid Resources in Private cloud Architecture. MoHRiPA has a modular design encompassing scheduling algorithms, virtualization tools, and monitoring tools. The proposed architecture solution allows assessing the overall system’s performance by using complete factorial planning to identify the general behavior of architecture under high demand of requests. It also evaluates workload behavior, the number of virtualized resources, and provides an elastic resource manager. A composite metric is also proposed and adopted as a criterion for resource scaling. This work presents a performance evaluation by using formal techniques, which analyses the scheduling algorithms of architecture and the experiment bottlenecks analysis, average response time, and latency. In summary, the proposed MoHRiPA mapping resources algorithm (HashRefresh) showed significant improvement results than the analyzed competitor, decreasing about 7% percent in the uniform average compared to ListSheduling (LS).


Author(s):  
Carl Malings ◽  
Rebecca Tanzer ◽  
Aliaksei Hauryliuk ◽  
Provat K. Saha ◽  
Allen L. Robinson ◽  
...  

1981 ◽  
Author(s):  
Ross L. Pepper ◽  
Robert S. Kennedy ◽  
Alvah C. Bittner ◽  
Steven F. Wiker

Sign in / Sign up

Export Citation Format

Share Document