Results 21 to 30 of about 33,325 (308)

Geometrical analysis and control optimization of a predator-prey model with multi state-dependent impulse

open access: yesAdvances in Difference Equations, 2017
In this paper, a predator-prey model with Holling type-I functional response and multi state impulsive feedback control is established, where the intensity of pesticide spraying and the release amount of natural enemies are linearly dependent on the ...
Jianmei Wang   +3 more
doaj   +1 more source

INCREASE OF INFORMATIVE CAPACITY OF ULTRA WIDE BAND IMPULSE SIGNALS

open access: yesInformation and Telecommunication Sciences, 2013
It is common to think that impulse radio ultra band signals (IR-UWB) in communication systems can carry the information at very high rates. But each impulse of the signal can carry just one bit of information.
Sergii Bunin
doaj   +1 more source

Regularizing fuel-optimal multi-impulse trajectories

open access: yesAstrodynamics, 2023
Abstract The regularization theory has successfully enabled the removal of gravitational singularities associated with celestial bodies. This paper merges regularizing techniques into a multi-impulse trajectory design framework that requires delicate computations specifically in a fuel minimization problem.
openaire   +1 more source

A Multi-Objective Variable-Specific Impulse Maneuvers Optimization Methodology

open access: yes, 2023
The problem of optimizing variable-specific impulse electric propulsion maneuvers is presented, proposing a novel multi-objective methodology for the computation of near-optimal planetocentric solutions. The methodology relates a parameter expressing the
Daniel Pérez Grande   +5 more
core   +1 more source

IFI and ISI premitigation for block-code-modulated noncoherent UWB impulse radio: A code optimization approach [PDF]

open access: yes, 2012
Codeword matching and signal aggregation (CMSA) is a recently proposed low-complexity noncoherent receiver for block code modulated UWB Impulse Radio (UWB-IR) systems. As the frame/symbol duration is shortened to boost data rate, inter-frame interference
Lv, Tiejun   +4 more
core   +1 more source

Interception time and uncertainty optimization for tangent-impulse orbit interception problem

open access: yesDefence Technology, 2022
The traditional tangent impulse interception problem does not consider the influence of actual deviation. However, by taking the actual state deviation of the interceptor into the orbit design process, an interception orbit that is more robust than the ...
Yang Hong, Li Xin-hong, Ding Wen-zhe
doaj   +1 more source

Influence of High Current-Density Impulses on the Stress-Strain Response and Microstructural Evolution of the Single Crystal Superalloy CMSX-4 [PDF]

open access: yesMaterials Research, 2018
Owing to the low formability of single-crystal nickel-based materials, single-crystal components are typically cast. Subsequently, a multi-stage heat treatment is carried out in order to partially compensate the dendrite segregation and to stabilize the ...
Eugen Demler   +6 more
doaj   +1 more source

Auralization based on multi-perspective ambisonic room impulse responses

open access: yesActa Acustica, 2020
Most often, virtual acoustic rendering employs real-time updated room acoustic simulations to accomplish auralization for a variable listener perspective.
Müller Kaspar, Zotter Franz
doaj   +1 more source

Surrogate impulse ground motion for practical simulation of critical nonlinear structural responses

open access: yesFrontiers in Built Environment
Impulse-based representations of earthquake ground motions provide an efficient framework for evaluating critical nonlinear structural responses. However, the direct use of ideal impulse ground motions expressed by Dirac’s delta function may excite all ...
Hiroki Akehashi   +5 more
doaj   +1 more source

Application of Machine Learning for the Spatial Analysis of Binaural Room Impulse Responses

open access: yesApplied Sciences, 2018
Spatial impulse response analysis techniques are commonly used in the field of acoustics, as they help to characterise the interaction of sound with an enclosed environment.
Michael Lovedee-Turner, Damian Murphy
doaj   +1 more source

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