Platform for joint evaluation of FPGA-implemented and Matlab algorithms in real MIMO transmissions

2005 ◽  
Author(s):  
M. Mendicute
Keyword(s):  
Joint Evaluation

scholarly journals Trajectory planning in UAV emergency networks with potential underlaying D2D communication based on K-means

2021 ◽  
Vol 2021 (1) ◽  
Author(s):  
Shuo Zhang ◽  
Shuo Shi ◽  
Tianming Feng ◽  
Xuemai Gu
Keyword(s):  
Trajectory Planning ◽  
Trajectory Optimization ◽  
Communication Systems ◽  
Complete Coverage ◽  
Wireless System ◽  
Fifth Generation ◽  
Emergency Communications ◽  
Trajectory Length ◽  
Post Disaster ◽  
Joint Evaluation

AbstractAt present, unmanned aerial vehicles (UAVs) have been widely used in communication systems, and the fifth-generation wireless system (5G) has further promoted the vigorous development of them. The trajectory planning of UAV is an important factor that affects the timeliness and completion of missions, especially in scenarios such as emergency communications and post-disaster rescue. In this paper, we consider an emergency communication network where a UAV aims to achieve complete coverage of potential underlaying device-to-device (D2D) users. Trajectory planning issues are grouped into clustering and supplementary phases for optimization. Aiming at trajectory length and sum throughput, two trajectory planning algorithms based on K-means are proposed, respectively. In addition, in order to balance sum throughput with trajectory length, we present a joint evaluation index. Then relying on this index, a third trajectory optimization algorithm is further proposed. Simulation results show the validity of the proposed algorithms which have advantages over the well-known benchmark scheme in terms of trajectory length and sum throughput.

Victim Number Effects in Charitable Giving: Joint Evaluations Promote Egalitarian Decisions

2021 ◽  
pp. 014616722098273
Author(s):  
Alexander Garinther ◽  
Holly Arrow ◽  
Pooya Razavi
Keyword(s):  
Bayesian Estimation ◽  
Charitable Giving ◽  
Random Order ◽  
Single Individual ◽  
Temporal Window ◽  
Opposite Pattern ◽  
Online Experiments ◽  
Joint Evaluation

Studies of victim number effects in charitable giving consistently find that people care more and help more when presented with an appeal to help an individual compared with an appeal to help multiple people in need. Across three online experiments ( N = 1,348), Bayesian estimation revealed the opposite pattern when people responded to multiple appeals to help targets of different sizes (1, 2, 5, 7, and 12). In this joint evaluation context, participants donated more to larger groups, when appeals were presented in both ascending order (Study 1) and random order (Study 2). The pattern held whether or not participants saw an overview of all appeals at the start of the study and when a single individual was added to the array (Study 3). These results clarify how compassion fade findings typical of separate evaluations may not generalize to contexts in which people encounter multiple appeals within a short temporal window.

Change in Backlash of Humanoid Robot Joints under High Load

2013 ◽  
Vol 372 ◽  
pp. 507-511
Author(s):  
Hitonobu Koike ◽  
Kenji Kanemasu ◽  
Kiyoto Itakura ◽  
Shota Okazaki ◽  
Masahiro Takamiya ◽  
...  
Keyword(s):  
Evaluation System ◽  
Humanoid Robot ◽  
Wear Test ◽  
Transmission Error ◽  
High Load ◽  
Fatigue Wear ◽  
Load Torque ◽  
Ether Ether Ketone ◽  
Poly Ether Ether Ketone ◽  
Joint Evaluation

In this work, wear of reinforced poly-ether-ether-ketone (PEEK) polymer bushes in friction against 7075 aluminium alloy cam plates or titanium crankshafts is investigated in order to establish the application possibilities in transmission parts in humanoid robot joints under high load torque. The PEEK bush wear requires close examination as well as the input axis-output axis transmission error (backlash). Sliding wear tests were performed on bushes under 4000 kgfcm (392 Nm) load torque, while the cam plate oscillated in the humanoid robot leg joint evaluation system. The robot joint using PEEK bush achieved quite small backlash after the fatigue wear test.

Sign in / Sign up

Export Citation Format

Share Document