Results 61 to 70 of about 1,174,103 (294)

Implementasi Hybrid DS/FH Spread Spectrum menggunakan DSK TMS302C6416T

open access: yesJurnal Teknik ITS, 2014
Spread spectrum adalah sebuah metode komunikasi dimana semua sinyal komunikasi disebar di seluruh spektrum frekuensi yang tersedia. Sinyal informasi akan ditebarkan pada seluruh pita frekuensi yang disediakan dan dilakukan secara acak.
Aji Wisnu Laksita   +2 more
doaj  

Calpain small subunit homodimerization is robust and calcium‐independent

open access: yesFEBS 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

Redundant Wavelet Watermarking using Spread Spectrum Modulation

open access: yesELCVIA Electronic Letters on Computer Vision and Image Analysis, 2008
Spread Spectrum modulation has become a preferred paradigm in many watermarking applications. This paper analyzes the performance of such a blind watermarking scheme under discrete wavelet frame rather than a traditional orthonormal wavelet expansion ...
V. H. Mankar   +3 more
doaj   +1 more source

Overlapping M-ary Frequency Shift Keying Spread-Spectrum Multiple-Access Systems using Random Signature Sequences

open access: yes, 1999
In this paper, a multiple-access spread-spectrum communication system using binary frequency shift keying (BFSK) or M-ary frequency shift keying (MFSK) and noncoherent demodulation is considered.
Hanzo, L., Yang, L-L.
core  

Quasinormal modes, quantized black holes, and correspondence principle

open access: yes, 2004
Contrary to the wide-spread belief, the correspondence principle does not dictate any relation between the asymptotics of quasinormal modes and the spectrum of quantized black holes.
Born M., I. B. KHRIPLOVICH
core   +2 more sources

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

open access: yesFEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel   +13 more
wiley   +1 more source

Potential therapeutic targeting of BKCa channels in glioblastoma treatment

open access: yesMolecular Oncology, EarlyView.
This review summarizes current insights into the role of BKCa and mitoBKCa channels in glioblastoma biology, their potential classification as oncochannels, and the emerging pharmacological strategies targeting these channels, emphasizing the translational challenges in developing BKCa‐directed therapies for glioblastoma treatment.
Kamila Maliszewska‐Olejniczak   +4 more
wiley   +1 more source

Development of an Integrated Communication and Sensing System Using Spread Spectrum and Photonics Technologies

open access: yesPhotonics
In the ever-evolving landscape of modern technology, integrating communication and sensing systems has become increasingly essential for a wide range of applications, from military and defense to autonomous vehicles and beyond.
Abdulrahman K. Alzamil   +5 more
doaj   +1 more source

Cell surface interactome analysis identifies TSPAN4 as a negative regulator of PD‐L1 in melanoma

open access: yesMolecular Oncology, EarlyView.
Using cell surface proximity biotinylation, we identified tetraspanin TSPAN4 within the PD‐L1 interactome of melanoma cells. TSPAN4 negatively regulates PD‐L1 expression and lateral mobility by limiting its interaction with CMTM6 and promoting PD‐L1 degradation.
Guus A. Franken   +7 more
wiley   +1 more source

Performance of XFAST in the presence of code Doppler

open access: yesTongxin xuebao, 2010
The probability of detection and false alarm in XFAST(extended replica folding acquisition search technique) were introduced in the condition of code Doppler and deterioration of noise caused by replica folding.The simulation re-sults show that the model
TANG Xiao-mei   +2 more
doaj  

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