نتایج جستجو برای: collision rate

تعداد نتایج: 1003720  

2005
J. Rodriguez-Navarro M. Sainz A. Susin

In this paper we present a new real-time cloth simulation. The usual bottleneck in cloth simulation is collision detection, which becomes more difficult to solve, with good frame rates, when a complex geometry, like a human body, is involved. Recent collision image based methods, that use depth images to detect collisions, usually relays on CPU for collision correction. In our case we implement...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2014
Vincent E Perrin Harm J J Jonker

This study investigates the local flow characteristics near droplet-droplet collisions by means of direct numerical simulation of isotropic cloudlike turbulence. The key finding is that, generally, droplets do not collide where they preferentially concentrate. Preferential concentration is found to happen as expected in regions of low enstrophy (vorticity magnitude), but collisions tend to take...

Journal: :Wireless Personal Communications 2014
Zahraa Dahham Aduwati Sali Borhanuddin Mohd Ali

IEEE 802.15.4 is one of the most prominent MAC protocol standard designed to achieve low-power, low-cost, and low-rate wireless personal area networks. The contention access period of IEEE 802.15.4 employs carrier sense multiple access with collision avoidance (CSMA/CA) algorithm. A long random backoff time causes longer average delay, while a small one gives a high collision rate. In this pape...

Journal: :Computer Communications 2007
Ji-Hoon Yun Seung-Woo Seo

Many control schemes proposed for IEEE 802.11 wireless LANs (WLANs) behave adaptively to transmission failures, which occur mostly by two causes: collision and channel noise. However, in generic 802.11 WLANs, a station cannot know the cause of a transmission failure, and thus the current adaptive schemes assume that all transmission failures occur by one of the causes, which may lead to erroneo...

Journal: :Physical review letters 2006
Marta C González Pedro G Lind Hans J Herrmann

We propose a model of mobile agents to construct social networks, based on a system of moving particles by keeping track of the collisions during their permanence in the system. We reproduce not only the degree distribution, clustering coefficient, and shortest path length of a large database of empirical friendship networks recently collected, but also some features related with their communit...

2016
Christopher Hay Thomas Funkhouser

Although there have been a number of advances in active vehicle safety, such as Autonomous Emergency Braking[2] and Steering[5], there is significant room for improvement. By using a riskminimization approach that utilizes a neural network trained from simulation and re-evaluates its control decision 30 times per second, we are able to significantly improve upon Autonomous Emergency systems. In...

2004
Ai-Chun Pang Hsueh-Wen Tseng

This paper proposes an efficient retransmission (EFR) scheme for multi-rate wireless home networks. In EFR, immediate data transmission is provided for infrastructure WLAN without major modification of IEEE 802.11 standard. Furthermore, in order to consider a more realistic wireless home networks, the EFR scheme is enhanced to accommodate the asymmetric traffic model. We propose an analytical m...

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