نتایج جستجو برای: propagation pattern

تعداد نتایج: 451772  

2010
Chiara Bedini

.............................................................................................................................................i Table of contents.............................................................................................................................iii List of Figures................................................................................................

2014
Atena Kavian Mirmorsal Madani Reza Sookhtsaraei

Back propagation neural network is successfully used in various fields, particularly in pattern recognition. Despite numerous applications, back propagation neural network`s design and optimization are developed by trial-and-error process, which is time-consuming. On the other hand, although a dataset may contain many features, these features may not be useful in a back propagation neural netwo...

2017
Jing Ma Wei Gao Kam-Fai Wong

How fake news goes viral via social media? How does its propagation pattern differ from real stories? In this paper, we attempt to address the problem of identifying rumors, i.e., fake information, out of microblog posts based on their propagation structure. We firstly model microblog posts diffusion with propagation trees, which provide valuable clues on how an original message is transmitted ...

2010
Carlos Linares López

In this work, a new approach for creating Pattern Databases (PDBs) is suggested that induces non-consistent heuristic functions just by recognizing feasible (yet admissible) heuristic values. This approach serves to generalize even further the BPMX propagation rule, that will work now even in directed graphs. Experiments in different state spaces show a noticeable improvement over the Scalar Pa...

2011
William G. Newhall

Wideband channel measurements have been used extensively to determine path loss and time dispersion characteristics of radio channels (e.g., [1], [2], [7]). The principles used to temporally resolve individual received signal components for wideband propagation measurements can be applied to antenna pattern measurements to achieve more accurate results. Multipath, a propagation phenomenon which...

2012
Christopher N. Ververidis Pantelis A. Frangoudis Yannis Thomas Vasilios A. Siris George C. Polyzos Ilias Andrikopoulos Fabrice Arnal Cédric Baudoin Maria Guta

The recent paradigm shift in the Internet’s usage, from the host-centric communication model to a model where users request information irrespectively of its location, is coupled with an increasing need for converged and seamless access over heterogeneous wired and wireless (fixed, cellular, and satellite) networks. Using a satellite network emulator within a publish/subscribe Information Centr...

Journal: :Remote Sensing 2013
André B. Couto Neil J. Holbrook Angela M. Maharaj

El Niño—Southern Oscillation (ENSO) is regarded as the main driver of phytoplankton inter-annual variability. Remotely sensed surface chlorophyll-a (Chl-a), has made it possible to examine phytoplankton variability at a resolution and scale that allows for the investigation of climate signals such as ENSO. We provide empirical evidence of an immediate and lagged influence of ENSO on SeaWiFS and...

2006
Gero Decker Frank Puhlmann Mathias Weske

Cross-organizational business processes are gaining increased attention these days, especially with the service oriented architecture (SOA) as a realization for business process management (BPM). In SOA, interaction agreements between business partners are defined as choreographies containing common interaction patterns. However, complex interactions are difficult to specify, basically because ...

2016
Kelvin H. R. Ng Kevin Hartman Kai Liu Andy W. H. Khong

During the semester break, 36 second-grade students accessed a set of resources and completed a series of online math activities focused on the application of the model method for arithmetic in two contexts 1) addition/subtraction and 2) multiplication/ division. The learning environment first modeled and then supported the use of a scripted series of steps for solving mathematical word problem...

Journal: :Wireless Networks 2016
Hongli Xu Liusheng Huang Long Chen Shan Lin

Multi-path transmission is an efficient way to balance the power consumption from a source to a destination. The previous works have studied rate–power allocation to prolong the network lifetime of multiple paths. As at least one relay node is required to participate into cooperative transmission, its assignment will greatly impact the power consumption of cooperative communication. Thus, this ...

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