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Nonorthogonal Eigenvectors, Fluctuation-Dissipation Relations, and Entropy Production.
Phys Rev Lett
February 2025
Jagiellonian University, Institute of Theoretical Physics and Mark Kac Center for Complex Systems Research, Kraków, Poland.
Celebrated fluctuation-dissipation theorem (FDT) linking the response function to time dependent correlations of observables measured in the reference unperturbed state is one of the central results in equilibrium statistical mechanics. In this Letter we discuss an extension of the standard FDT to the case when multidimensional matrix representing transition probabilities is strictly non-normal. This feature dramatically modifies the dynamics, by incorporating the effect of eigenvector nonorthogonality via the associated overlap matrix of Chalker-Mehlig type.
View Article and Find Full Text PDFBlock-based single-pixel imaging (SPI) systems use multiple detectors of a focal plane array to create highly parallel extensions of a single-pixel camera. This Letter presents what we believe to be a new approach for parallel single-pixel imaging that leverages the Talbot effect to scan an object with a short sequence of periodic light patterns encoded on a digital micromirror device (DMD). The unit cell of each periodic pattern corresponds to a Walsh-Hadamard (WH) matrix of low dimension.
View Article and Find Full Text PDFChromatic confocal measurement (CCM) is an extensive technique of confocal microscopy, where the inherent relation between the focused wavelength and the axial position enables depth sensing. Most CCM works by single-point, resulting in inevitable lateral scans for 3D measurement. To facilitate the process, a 3D measurement method was developed, characterized by combining depth obtained by chromatic confocal technique and lateral information obtained by DMD.
View Article and Find Full Text PDFPreserving the Biologically Coherent Generic Concept of , 'Plant Destroyer'.
Phytopathology
March 2025
Mendel University in Brno, Phytophthora Research Centre, Department of Forest Protection and Wildlife Management, Faculty of Forestry and Wood Technology, Zemědělská 3, 613 00 Brno, Brno, Czech Republic, 613 00;
is a long-established, well known and globally important genus of plant pathogens. Phylogenetic evidence has shown that the biologically distinct, obligate biotrophic downy mildews evolved from at least twice. Since, cladistically, this renders 'paraphyletic', it has been proposed that evolutionary clades be split into multiple genera (Runge et al.
View Article and Find Full Text PDFImpact of rising temperatures on scavenging chicken production in Uganda: farmer perceptions, challenges and coping strategies.
Trop Anim Health Prod
March 2025
Department of Geography, Norwegian University of Science and Technology, Trondheim, Norway.
The scavenging chicken production system is vital to rural households in Uganda for food security and poverty alleviation. However, rising temperatures due to climate change threaten the productivity of indigenous chickens. This study assessed the perceived impacts of high temperatures on chicken productivity, identified coping strategies used by farmers, and examined factors influencing the adoption of these strategies in Soroti district.
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