Results 71 to 80 of about 879,921 (312)
Spectrum Sensing With Energy Detection in Multiple Alternating Time Slots
IEEE Access, 2022 Energy detection (ED) represents a low complexity approach used by secondary users (SU) to sense spectrum occupancy by primary users (PU) in cognitive radio (CR) systems.
Calin Vladeanu +2 more
doaj +1 more source
Detecting reflection axes by energy minimisation [PDF]
Proceedings 15th International Conference on Pattern Recognition. ICPR-2000, 2002 We formulate the problem of detecting reflectional symmetries as the problem of minimising an asymmetric energy term. The local minima of the asymmetric energy correspond to the reflectional symmetric axes of an object. Typical experiments show the correctness and the robustness of the proposed technique.
Dinggang Shen +2 more
openaire +1 more source
Robust Speech Detection for Noisy Environments
, 2011 This paper presents a robust voice activity detector (VAD) based on hidden Markov models (HMM) to improve speech recognition systems in stationary and non-stationary noise environments: inside motor vehicles (like cars or planes) or inside buildings ...
San Segundo Hernández, Rubén +5 more
core +1 more source
Calpain small subunit homodimerization is robust and calcium‐independent
FEBS Letters, EarlyView.Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy +4 more
wiley +1 more source
, 2021 During the last few years, attention has overwhelmingly focused on the integrated management of urban services and the demand of customers for locally-based supply.
Udaya Dampage +3 more
core +1 more source
FEBS Letters, EarlyView.Biomolecular condensates formed by fused in sarcoma (FUS) are dissolved by high ATP concentrations yet persist in cells. Using a reconstituted system, we demonstrate that valosin‐containing protein (VCP), an AAA+ ATPase, counteracts ATP‐driven dissolution of FUS condensates through its D2 ATPase activity.
Hitomi Kimura +2 more
wiley +1 more source
Energy detector performance in Rician fading channel [PDF]
Serbian Journal of Electrical Engineering, 2013 In this paper we analyzed the problem of detection of unknown signals in the Rician fading channel. A closed-form expression for the probability of detection is derived, followed by the numerical results. The analysis was extended to the case of
Brkić Srđan S., Ivaniš Predrag N.
doaj +1 more source
Is the dynamics of scaling dark energy detectable? [PDF]
Journal of Cosmology and Astroparticle Physics, 2008 We highlight the unexpected impact of nucleosynthesis and other early universe constraints on the detectability of tracking quintessence dynamics at late times, showing that such dynamics may well be invisible until the unveiling of the Stage-IV dark energy experiments (DUNE, JDEM, LSST, SKA).
Bassett, Bruce A. +7 more
openaire +2 more sources
FEBS Letters, EarlyView.Mitochondrial remodeling shapes neural and glial lineage progression by matching metabolic supply with demand. Elevated OXPHOS supports differentiation and myelin formation, while myelin compaction lowers mitochondrial dependence, revealing mitochondria as key drivers of developmental energy adaptation.
Sahitya Ranjan Biswas +3 more
wiley +1 more source
IEEE Access, 2020 Green cognitive radios show promise for high energy efficiency (EE) in the future of wireless communications. Spectrum sensing refers to an energy-consuming procedure that allows cognitive users to independently identify unused radio spectrum segments ...
Arash Ostovar +3 more
doaj +1 more source