نتایج جستجو برای: directed diffusion

تعداد نتایج: 318196  

Journal: :CoRR 2015
Marcel Ausloos

Diffusion of knowledge is expected to be huge when agents are open minded. The report concerns a more difficult diffusion case when communities are made of stubborn agents. Communities having markedly different opinions are for example the Neocreationist and Intelligent Design Proponents (IDP), on one hand, and the Darwinian Evolution Defenders (DED), on the other hand. The case of knowledge di...

2009
Pardeep Garg Abhinav Gupta M. C. Srivastava Ankur Gupta Nikunj Agarwal

In this paper the edge-directed error diffused digital halftoning in noisy media is analyzed. It is known that there occurs error in transmitting data through a communication channel due to addition of noise, generally additive white Gaussian noise (AWGN). The proposed work employs Steerable stochastic error diffusion (SSED) approach, a hybrid scheme that utilizes the advantages of Steerable fi...

Journal: :Cell 2007
Eugenio Marco Roland Wedlich-Soldner Rong Li Steven J. Altschuler Lani F. Wu

Diverse cell types require the ability to maintain dynamically polarized membrane-protein distributions through balancing transport and diffusion. However, design principles underlying dynamically maintained cortical polarity are not well understood. Here we constructed a mathematical model for characterizing the morphology of dynamically polarized protein distributions. We developed analytical...

Journal: :Microprocessors and Microsystems 2004
Wei Ding S. Sitharama Iyengar Rajgopal Kannan William Rummler

Energy is a critical resource in wireless sensor networks. In this paper, we propose a new approach to maintain network wide energy equivalence and maximize network lifetime. Compared to existing protocols, our approach emphasizes on route maintenance instead of route finding. This means no critical nodes would become the bottleneck of network lifetime. A reroute request packet is sent out from...

2010
Anna Brachet Christophe Leterrier Marie Irondelle Marie-Pierre Fache Victor Racine Jean-Baptiste Sibarita Daniel Choquet Bénédicte Dargent

In mammalian neurons, the precise accumulation of sodium channels at the axonal initial segment (AIS) ensures action potential initiation. This accumulation precedes the immobilization of membrane proteins and lipids by a diffusion barrier at the AIS. Using single-particle tracking, we measured the mobility of a chimeric ion channel bearing the ankyrin-binding motif of the Nav1.2 sodium channel...

2008
Kazumi Saito Masahiro Kimura Hiroshi Motoda

Effective visualization is vital for understanding a complex network, in particular its dynamical aspect such as information diffusion process. Existing node embedding methods are all based solely on the network topology and sometimes produce counter-intuitive visualization. A new node embedding method based on conditional probability is proposed that explicitly addresses diffusion process usin...

2006
Giovano O. Cardozo Jose F. Fontanari

The nonequilibrium phase transition in the triplet-creation model is investigated using critical spreading and the conservative diffusive contact process. The results support the claim that at high enough diffusion the phase transition becomes discontinuous. As the diffusion probability increases the critical exponents change continuously from the ordinary directed percolation (DP) class to the...

2009
A. H. Azni Madihah Mohd Saudi Azreen Azman Ariff Syah Johari

Sensor Network are emerging as a new tool for important application in diverse fields like military surveillance, habitat monitoring, weather, home electrical appliances and others. Technically, sensor network nodes are limited in respect to energy supply, computational capacity and communication bandwidth. In order to prolong the lifetime of the sensor nodes, designing efficient routing protoc...

2012
S. Wijedasa

This paper presents an energy-efficient loadbalancing algorithm for Wireless Sensor Networks. The algorithm specifies that only the nodes which have residual energy above a threshold can take part in routing, and that residual energy is to be updated at the highest opportunistic rate supported by the network. The algorithm was tested on and showed improvements to hierarchical data aggregation a...

2016
Congping Lin Martin Schuster Sofia Cunha Guimaraes Peter Ashwin Michael Schrader Jeremy Metz Christian Hacker Sarah Jane Gurr Gero Steinberg

Even distribution of peroxisomes (POs) and lipid droplets (LDs) is critical to their role in lipid and reactive oxygen species homeostasis. How even distribution is achieved remains elusive, but diffusive motion and directed motility may play a role. Here we show that in the fungus Ustilago maydis ∼95% of POs and LDs undergo diffusive motions. These movements require ATP and involve bidirection...

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