Results 51 to 60 of about 1,966 (184)
A Conceptual Framework for Assessing Soil Structural Attributes Across Contrasting Land‐Use Types
European Journal of Soil Science, Volume 77, Issue 3, May–June 2026.ABSTRACT Soil structure governs ecosystem functioning across scales, but its complexity requires integrative approaches that capture geometric and functional properties. This study proposes a methodological framework that integrates field‐based visual evaluation of soil structure (VESS), X‐ray computed tomography (CT) and soil hydraulic property (SHP ...
Niklas Schmücker +4 more
wiley +1 more source
A non-gravitational wormhole [PDF]
Classical and Quantum Gravity, 2000 Using the effective metric formalism for photons in a nonlinear electromagnetic theory, we show that a certain field configuration in Born-Infeld electromagnetism in flat spacetime can be interpreted as an ultrastatic spherically symmetric wormhole. We also discuss some properties of the effective metric that are valid for any field configuration.
BALDOVIN, FULVIO +3 more
openaire +4 more sources
Engineering Reports, Volume 8, Issue 4, April 2026.Rat swarm position update mechanism in HRSA‐RSO, illustrating the collective exploration behavior around the prey target (A*, B*). ABSTRACT The permutation flow shop scheduling problem (PFSSP) is a classical NP‐hard problem that aims to determine an optimal job sequence across machines to minimize makespan.
Mourad Mzili +5 more
wiley +1 more source
Fortschritte der Physik, Volume 74, Issue 4, April 2026.Abstract String theory has strong implications for cosmology, implying the absence of a cosmological constant, ruling out single‐field slow‐roll inflation, and that black holes decay. The origins of these statements are elucidated within the string‐theoretical swampland programme.
Kay Lehnert
wiley +1 more source
Time and Matter, 2006 To predict the outcome of (almost) any experiment we have to assume that our spacetime is globally hyperbolic. The wormholes, if they exist, cast doubt on the validity of this assumption. At the same time, no evidence has been found so far (either observational, or theoretical) that the possibility of their existence can be safely neglected.
openaire +2 more sources
The Dynamics of Reading Genre Fiction: Researching and Teaching Interpretive Practices
Reading Research Quarterly, Volume 61, Issue 2, April/May/June 2026.Conceptual model positioning genre fiction as a site for studying how narrative form organizes reader interpretation, identifying four dynamics—iterability, narrative interest, serialization, and spectacle—to guide empirical research on reading processes.
Robert Jean LeBlanc, Amy Stornaiuolo
wiley +1 more source
UniverseSpacetime wormholes are evidently an essential component of the construction of a time machine. Within the context of general relativity, such objects require, for their formation, exotic matter—matter that violates at least one of the standard energy ...
Mengqi Lu, Jiayue Yang, Robert B. Mann
doaj +1 more source
A New Padé Approach to Modeling Wormholes in Dekel‐Zhao Dark Matter Halos
Annalen der Physik, Volume 538, Issue 3, March 2026.A matter‐first Padé strategy is introduced to build traversable wormholes from prescribed dark‐matter halos. Rational Padé fits approximately the Dekel–Zhao density and are analytically integrated to obtain a shape function that exactly reproduces the intended matter content, avoiding spurious poles of geometry‐first schemes.
Jonathan Alves Rebouças +4 more
wiley +1 more source
A Secure Localization Approach against Wormhole Attacks Using Distance Consistency
EURASIP Journal on Wireless Communications and Networking, 2010 Wormhole attacks can negatively affect the localization in wireless sensor networks. A typical wormhole attack can be launched by two colluding attackers, one of which sniffs packets at one point in the network and tunnels them through a wired or ...
Honglong Chen +3 more
doaj +2 more sources
Wormhole solutions in deformed space-time
European Physical Journal C: Particles and FieldsWe construct and analyse wormhole solutions in quantised space-time. The field equations are constructed from the deformed wormhole metric in the proper reference frame using tetrads.
Harsha Sreekumar, E. Harikumar
doaj +1 more source