Results 181 to 190 of about 4,555,115 (280)
Directive Antenna Clutter Loss in Slant Paths
International Journal of Satellite Communications and Networking, EarlyView.ABSTRACT This paper investigates the development of a clutter loss model specifically for slant paths involving directive antennas. Conventionally, clutter loss is characterized by using isotropic antennas to facilitate standard link budget calculations via single antenna gain values.
Fernando Pérez Fontán +4 more
wiley +1 more source
Integrating Image Segmentation and Deep Learning to Improve Radio Frequency Propagation Models
International Journal of Satellite Communications and Networking, EarlyView.ABSTRACT This paper proposes a multi‐sensor approach to improve radio frequency (RF) propagation models, which play a key role in the rapidly expanding field of connected vehicle technology. Focusing on the 1‐ to 20‐GHz frequency range, which is critical for both satellite‐to‐vehicle and base station‐to‐vehicle communications, our study introduces a ...
Jonathan Israel +2 more
wiley +1 more source
Vibrational Exfoliation of 2D Materials
Small, EarlyView.Vibrational energy folds, fractures and exfoliates atomically and molecularly thin materials. Combining experimentation and computational methods, this unique vibrational synthesis pathway is revealed. This process overcomes barriers of existing approaches by processing 1000 g/L dispersions without loss in yield.
Aadam Rabani +5 more
wiley +1 more source
Small, EarlyView.Thermal instability mechanisms governing novel Al‐based PVD/ALD nanocomposites are uncovered through synchrotron XRD, STEM, APT, and micromechanical testing. Temperature‐dependent crystallite evolution reveals a defined stability window before degradation dominates, offering new insight into the design of thermally robust, functional Al‐based ...
Hendrik C. Jansen +10 more
wiley +1 more source
Self‐Assembly of a Colloidal Honeycomb Crystal in Silico for Topological Valley Photonics
Small, EarlyView.The self‐assembly of a colloidal honeycomb crystal is demonstrated in computer simulations, using an assembly strategy that not only suppresses the formation of real‐space topological defects observed experimentally but also yields topological photonic properties in reciprocal space.
Adam Walker +5 more
wiley +1 more source
THE RAYLEIGH’S FAMILY OF DISTRIBUTIONS
Review of the Air Force Academy, 2018 openaire +1 more source
Negative Chemotaxis of Urease‐Functionalized Polymeric Microcapsules
Small, EarlyView.Urease‐functionalized PLGA microcapsules exhibit negative chemotaxis in urea gradients, migrating from high to low substrate concentrations. Increasing gradients enhance chemotaxis until a plateau, while increasing average substrate concentration in a fixed gradient reverses chemotactic behavior.
Amanda Hopkins +2 more
wiley +1 more source
Programmable Porosity in Polymers via Microfluidic Templating and 3D Printing
Small Methods, EarlyView.Fluid templating is a powerful way to produce porous polymers. Microfluidic technologies enable fine control over the dimension and packing of bubbles and droplets. Combined with additive manufacturing, microfluidic templating enables the creation of polymeric functionally graded porous materials in which both porosity and three‐dimensional geometry ...
Federico Serpe +3 more
wiley +1 more source
Small Methods, EarlyView.This comprehensive review delivers an engineering‐centric analysis of microfluidic molecular diagnostic chips, breaking them down into foundational modules from fluid manipulation to bio‐sensing. Beyond chip design, it evaluates sample‐to‐answer integration strategies and commercial readiness levels.
Donghoon Koo +7 more
wiley +1 more source
Environmental and Genetic Conditions Shaping Monarch Butterfly Migration Biology. [PDF]
Anim BehavTsai HY +3 more
europepmc +1 more source