Results 1 to 10 of about 94 (93)

Spectrum Aliasing Does Occur Only in Case of Non-ideal Signal Sampling [PDF]

International Journal of Electronics and Telecommunications, 2021
In this paper, it has been shown that the spectrum aliasing and folding effects occur only in the case of non-ideal signal sampling. When the duration of the signal sampling is equal to zero, these effects do not occur at all.
Andrzej Borys
doaj   +2 more sources

Another Proof of Ambiguity of the Formula Describing Aliasing and Folding Effects in Spectrum of Sampled Signal [PDF]

International Journal of Electronics and Telecommunications, 2022
In this paper, a new proof of ambiguity of the formula describing the aliasing and folding effects in spectra of sampled signals is presented. It uses the model of non-ideal sampling operation published by Vetterli et al.
Andrzej Borys
doaj   +1 more source

Spectrum Aliasing Does not Occur in Case of Ideal Signal Sampling [PDF]

International Journal of Electronics and Telecommunications, 2021
A new model of ideal signal sampling operation is developed in this paper. This model does not use the Dirac comb in an analytical description of sampled signals in the continuous time domain. Instead, it utilizes functions of a continuous time variable,
Andrzej Borys
doaj   +1 more source

Decoding Preschool Social Dynamics: Automated Tracking of Spatial and Temporal Patterns to Investigate Social Interactions and Relationships in Peer Groups

Developmental Science, Volume 29, Issue 4, July 2026.
ABSTRACT In this study, we applied machine learning tools to automatically track the positions of preschool children in a natural free play setting and derived spatial and temporal features from these data to identify social interactions between them.
Gabriela Markova, Jozsef Arato, Ruzena Ceral, Maximilian Hofbauer, Cliodhna Quigley, Lisa Horn   +5 more
wiley   +1 more source

Lamin B1 safeguards the B cell genome and shapes lymphoma outcome

HemaSphere, Volume 10, Issue 6, June 2026.
Abstract Lamin B1 is a structural component of the nuclear lamina that participates in genome organization and transcriptional control. During adaptive immune responses, B lymphocytes in germinal centers (GCs) undergo clonal expansion and programmed DNA damage at immunoglobulin loci, while simultaneously downregulating Lamin B1.
Filip Filipsky, Katarina B. Chapman, Johannes Bloehdorn, Oscar Maiques, Abigail Lee, Andrew Clear, Jun Wang, John Gribben, Michael Hausmann, Christoph Cremer, Andrejs Braun, Marta C. Sallan, Tanya Klymenko   +12 more
wiley   +1 more source

From the cytosol to the inner membrane: biogenesis of the mitochondrial carrier family

Protein Science, Volume 35, Issue 4, April 2026.
Abstract Mitochondrial carrier proteins are essential for cellular physiology as they are active in a wide range of metabolic pathways including production of cellular energy, amino acid synthesis, redox balance and ion homeostasis. The double membrane of mitochondria provides a tightly gated environment through which carrier proteins facilitate the ...
Catherine S. Palmer, Phoebe J. Leeming, Diana Stojanovski   +2 more
wiley   +1 more source

Characterizing Patterns of Drought Synchronicity in the Contiguous United States

Water Resources Research, Volume 62, Issue 4, April 2026.
Abstract Drought synchronicity, defined as the co‐occurrence of droughts across multiple regions within a specified temporal window, poses significant risks to agriculture, infrastructure, and ecosystems. Here, we investigate the regional and temporal dynamics of drought synchronicity across the contiguous United States (CONUS) from 1980 to 2021, using
Lisa Nguyen, Mohammed Ombadi
wiley   +1 more source

Stunning Intricacies of RNA Editing Complexes RECC, RESC, and REH2C: Functional Organization, Developmental Regulation, and Evolutionary History in Kinetoplastid Protists

WIREs RNA, Volume 17, Issue 2, March/April 2026.
U‐indel RNA editing targets mRNA:gRNA duplexes through three key complexes that collectively govern assembly, specificity, catalysis, and developmental regulation. Modern tools, including artificial intelligence, analyze the organization, dynamics, and evolution of the remarkable holo‐editosome, opening new avenues in RNA biology and therapy.
Suzanne M. McDermott, Julius Lukeš, Laurie K. Read, Reza Salavati, Achim Schnaufer, Sara L. Zimmer, Jason Carnes, Alasdair Ivens, Naghmeh Poorinmohammad, Nicholas J. Savill, Dave Speijer, Ken Stuart, Kristína Záhonová, Poorya Mirzavand Borujeni, Zihao Chen, Cody Goode, Sunil Kumar Sharma, Lars O’Hara, Jorge Cruz‐Reyes   +18 more
wiley   +1 more source

Extending the Wave Telescope Technique to Larger Numbers of Spacecraft Obtaining Robust Spatial Power Spectra

Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract The wave telescope is an analysis technique for multi‐point spacecraft data that estimates power spectra in reciprocal position space (k $k$‐space). It has been used to reveal the spatial properties of waves and fluctuations in space plasmas. Originally designed as an analysis tool for 4 spacecraft constellations, new multi‐scale missions such
L. Schulz, K.‐H. Glassmeier, L. Turc, F. Plaschke, K. G. Klein, M. Palmroth, O. W. Roberts, Y. Narita   +7 more
wiley   +1 more source

Inversion of Short‐Period Seismic Signals as a Tool to Understand Small‐Volume Rockslide Mechanics: The Case Study of the 26 January 2023, Lorgino (Crevoladossola, NW Italy) Rockslide

Earth and Space Science, Volume 13, Issue 2, February 2026.
Abstract A small‐volume 6,000 m3 rockslide struck the Lorgino hamlet of Crevoladossola (NW Italy) just before 23:00 UTC on 26 January 2023, at the boundary of a nearby marble quarry. The rockslide severely damaged the mining infrastructure and halted operations for months, fortunately without causing injuries or casualties.
G. M. Adinolfi, G. Umili, C. Comina, S. C. Vinciguerra   +3 more
wiley   +1 more source