A Fixed Path Acoustic Interferometer for the Study of Matter

1939 ◽  
Vol 10 (12) ◽  
pp. 382-386 ◽  
Author(s):  
J. C. Hubbard ◽  
I. F. Zartman
Keyword(s):  
Acoustic Interferometer ◽  
Fixed Path

scholarly journals GAFOR: Genetic Algorithm Based Fuzzy Optimized Re-Clustering in Wireless Sensor Networks

Mathematics ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 43
Author(s):  
Muhammad K. Shahzad ◽  
S. M. Riazul Islam ◽  
Mahmud Hossain ◽  
Mohammad Abdullah-Al-Wadud ◽  
Atif Alamri ◽  
...  
Keyword(s):  
Genetic Algorithm ◽  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Network Lifetime ◽  
Smart Cities ◽  
Hot Spot ◽  
Time Instant ◽  
Wireless Sensor ◽  
Injection Attacks ◽  
Fixed Path

In recent years, the deployment of wireless sensor networks has become an imperative requisite for revolutionary areas such as environment monitoring and smart cities. The en-route filtering schemes primarily focus on energy saving by filtering false report injection attacks while network lifetime is usually ignored. These schemes also suffer from fixed path routing and fixed response to these attacks. Furthermore, the hot-spot is considered as one of the most crucial challenges in extending network lifetime. In this paper, we have proposed a genetic algorithm based fuzzy optimized re-clustering scheme to overcome the said limitations and thereby minimize the effect of the hot-spot problem. The fuzzy logic is applied to capture the underlying network conditions. In re-clustering, an important question is when to perform next clustering. To determine the time instant of the next re-clustering (i.e., number of nodes depleted—energy drained to zero), associated fuzzy membership functions are optimized using genetic algorithm. Simulation experiments validate the proposed scheme. It shows network lifetime extension of up to 3.64 fold while preserving detection capacity and energy-efficiency.

scholarly journals Path-dependent martingale problems and additive functionals

2019 ◽  
Vol 19 (04) ◽  
pp. 1950027 ◽  
Author(s):  
Adrien Barrasso ◽  
Francesco Russo
Keyword(s):  
Martingale Problem ◽  
Natural Extension ◽  
Fixed Time ◽  
Companion Paper ◽  
Canonical Class ◽  
Additive Functionals ◽  
Martingale Problems ◽  
Usual Concept ◽  
Path Dependent ◽  
Fixed Path

The paper introduces and investigates the natural extension to the path-dependent setup of the usual concept of canonical Markov class introduced by Dynkin and which is at the basis of the theory of Markov processes. That extension, indexed by starting paths rather than starting points, will be called path-dependent canonical class. Associated with this is the generalization of the notions of semi-group and of additive functionals to the path-dependent framework. A typical example of such family is constituted by the laws [Formula: see text], where for fixed time [Formula: see text] and fixed path [Formula: see text] defined on [Formula: see text], [Formula: see text] is the (unique) solution of a path-dependent martingale problem or more specifically the weak solution of a path-dependent SDE with jumps, with initial path [Formula: see text]. In a companion paper we apply those results to study path-dependent analysis problems associated with BSDEs.

Variable path cryogenic acoustic interferometer

1998 ◽  
Vol 69 (12) ◽  
pp. 4156-4159 ◽  
Author(s):  
D. M. Kucera ◽  
J. B. Ketterson
Keyword(s):  
Acoustic Interferometer
Sign in / Sign up

Export Citation Format

Share Document