Results 61 to 70 of about 40,747,413 (194)

On the system of rational difference equations x_n+1 = f(y_n-q, x_n-s), y_n+1 = g(x_n-t, y_n-p)

Advances in Difference Equations, 2006
We study the global behavior of positive solutions of the system of rational difference equations xn+1 = f(yn-q, xn-s), yn+1 = g(xn-t, yn-p), n = 0,1,2,..., where p, q, s, t ∈ {0,1,2,...} with s ≥ t and p ≥ q, the initial values x-s, x-s+1,...,x0, y-p, y-p+1,...y0 ∈ (0,+∞).
Xi Hongjian, Sun Taixiang
openaire   +1 more source

A hitchhiker's guide to modern, practical cyanobacterial taxonomy

Journal of Phycology, Volume 61, Issue 6, Page 1536-1552, December 2025.
Abstract There has been an explosion of new Cyanobacterial taxa described within the last two decades. Cyanobacteria exhibit incredible ecological versatility and morphological variability, and thousands of species have already been described using “traditional” approaches (e.g., morphological features).
Petr Dvořák, Svatopluk Skoupý, Aleksandar Stanojković, Jeffrey R. Johansen, Chelsea Villanueva, Patrick Jung, Laura Briegel‐Williams, H. Dail Laughinghouse IV, Forrest W. Lefler, David E. Berthold, Jan Kaštovský, Anne C. Hurley, Dale A. Casamatta   +12 more
wiley   +1 more source

Integrable Fredholm Operators and Dual Isomonodromic Deformations

, 1997
The Fredholm determinants of a special class of integral operators K supported on the union of m curve segments in the complex plane are shown to be the tau-functions of an isomonodromic family of meromorphic covariant derivative operators D_l.
Harnad, J., Its, Alexander R.
core   +1 more source

Modification of Hot Mix Asphalt Using Ethylene Vinyl Acetate (EVA) for Hot and Arid Regions

مجلة العلوم البحتة والتطبيقية, 2020
Permanent deformation or rutting is a primary failure mode of hot mix asphalt (HMA) pavements especially in hot and arid region. The aim of this study was to achieve the viability of using Ethylene Vinyl Acetate (EVA) as a modifier of hot mix asphalt ...
Bakhi Aljanadi, Manssour Bin Miskeen, Saleh Abosalah
doaj   +1 more source

Integrative taxonomy of the Ceratozamia mexicana Brongn. (Zamiaceae) species complex from a phylogeographic perspective

Plant Species Biology, Volume 40, Issue 6, Page 530-546, November 2025.
Recent research has ignited a renewed interest in Ceratozamia cycads, unveiling their remarkable diversity. While previous studies primarily focused on morphology, this investigation employs a multidisciplinary approach, integrating phylogenetics, morphology, and ecological niches. Our methods identify seven distinct lineages as separate species.
Anwar Medina‐Villarreal, Jorge González‐Astorga, Alejandro Espinosa de los Monteros   +2 more
wiley   +1 more source

Feasibility of expanding traffic monitoring systems with floating car data technology [PDF]

, 2012
Trajectory information reported by certain vehicles (Floating Car Data or FCD) can be applied to monitor the road network. Policy makers face difficulties when deciding to invest in the expansion of their infrastructure based on inductive loops and ...
Demeester, Piet, Moerman, Ingrid, Vandenberghe, Wim, Vanhauwaert, Erik, Verbrugge, Sofie   +4 more
core   +1 more source

On the Difference equation x_n+ = ax_n - bx_n/(cx_x - dx_n-1)

Advances in Difference Equations, 2006
We investigate some qualitative behavior of the solutions of the difference equation xn+ = axn - bxn/(cxx - dxn-1), n = 0,1,..., where the initial conditions x-1, x0 are arbitrary real numbers and a, b, c, d are positive constants.
Elabbasy EM, El-Metwally H, Elsayed EM
openaire   +1 more source

Kalymmatonema gen. nov. (Scytonemataceae, Cyanobacteria): A desert soil crust genus previously identified as Scytonema hyalinum, with description of seven species new to science

Journal of Phycology, Volume 61, Issue 5, Page 1225-1250, October 2025.
Abstract Numerous cyanobacterial strains previously identified as Scytonema hyalinum were determined to be phylogenetically distant from the type species of Scytonema, S. hofmannii. Morphological and molecular evidence suggests this distinct clade necessitates placement in a new genus, and we have described Kalymmatonema gen. nov. herein. Kalymmatonema
Markéta Bohunická, Jeffrey R. Johansen, Nicole Pietrasiak, Brian M. Jusko, Melaku Mesfin, Itzel Becerra‐Absalón   +5 more
wiley   +1 more source

Comultiplication in ABCD algebra and scalar products of Bethe wave functions

, 1993
The representation of scalar products of Bethe wave functions in terms of the Dual Fields, proven by A.G.Izergin and V.E.Korepin in 1987, plays an important role in the theory of completely integrable models.
A. Mikhailov, Faddeev, Its, Its, Izergin, Izergin, Jimbo, Jimbo, Korepin, Korepin, Korepin, Korepin, Reshetikhin, Sato, Segal   +14 more
core   +1 more source

Terrestrial algae and cyanobacteria of the Holosiiv National Nature Park (Kyiv, Ukraine), with the description of Leptochlorella arboricola sp. nov. (Trebouxiophyceae, Chlorophyta)

Ukrainian Botanical Journal
The article provides the results of a study on terrestrial algae inhabiting various substrates in the Holosiiv National Nature Park, which was established to protect the remnants of natural ecosystems in the Kyiv metropolitan area, Ukraine.
Mikhailyuk T.I. , Vinogradova O.M., Demchenko E.M. , Petlovana V.R., Glaser K. , Karsten U.   +5 more
doaj   +1 more source