Results 121 to 130 of about 26,109,916 (377)
Ecological Diversity: Measuring the Unmeasurable
Diversity is a concept central to ecology, and its measurement is essential for any study of ecosystem health. But summarizing this complex and multidimensional concept in a single measure is problematic. Dozens of mathematical indices have been proposed
Aisling J. Daly+2 more
doaj +1 more source
When is an exploration exploratory? A comparative analysis of geometry lessons [PDF]
This paper presents a comparative analysis of two textbook lessons on the same topic from U.S. textbooks to learn how differently - designed “exploratory” lessons may structure content to enable or constrain student inquiry. One lesson, representative of
Dietiker, Leslie, Richman, Andrew
core
Thermally Induced Gelling Systems Based on Patchy Polymeric Micelles
A novel strategy to design thermally induced gelling systems with tunable material properties is reported. Polymeric mixed‐shell micelles displaying multiple thermosensitive patchy domains formed hydrogels by assembling into well‐entangled worm‐like network structures upon heating to body temperature. The patchy micelle design significantly affects the
Binru Han+9 more
wiley +1 more source
Ultrahigh Piezoelectricity in Truss‐Based Ferroelectric Ceramics Metamaterials
By leveraging the unique combination of polarization direction and loading state, ultrahigh piezoelectricity is achieved through careful tuning of the relative density and scaling ratio in truss‐based ferroelectric metamaterials. This approach enables the simultaneous realization of extremely high piezoelectric constants and ultralow dielectric ...
Jiahao Shi+6 more
wiley +1 more source
Exact solutions of equal-width equation and its conservation laws
In this work we investigate the equal-width equation, which is used for simulation of (1-D) wave propagation in non-linear medium with dispersion process.
Khalique Chaudry Masood+2 more
doaj +1 more source
Multi-centered N = 2 $$ \mathcal{N}=2 $$ BPS black holes: a double copy description
We present the on-shell double copy dictionary for linearised N = 2 $$ \mathcal{N}=2 $$ supergravity coupled to an arbitrary number of vector multiplets in four dimensions.
G.L. Cardoso, S. Nagy, S. Nampuri
doaj +1 more source
On a finitary version of mathematical analysis
This paper is an extended exposition of the talk ``A finitary version of mathematical analysis as a result of the development of theory of functional spaces in classical mathematics'' presented by the author at the conference ``First St. Petersburg Days of Logic and Computability'' in 1999.
openaire +2 more sources
3D Printed Ultra‐Fast Plastic Scintillators Based on Perovskite‐Photocurable Polymer Composite
The demand for radiation detection is increasing in a number of fields, including high‐energy physics, medical imaging, and homeland security. This study serves to demonstrate the potential for the fabrication of fast perovskite‐based scintillators with complex shapes via stereolithographic additive manufacturing, representing a new path toward the ...
Antonella Giuri+16 more
wiley +1 more source
A Course in Mathematical Analysis [PDF]
Édouard Goursat, E. R. Hedrick
openalex +1 more source
Print‐and‐Plate Architected Electrodes for Electrochemical Transformations Under Flow
Typical flow cell electrodes are composed of stochastic porous carbon, limiting understanding of electrode structure‐performance relationships. This work describes an approach, termed “print‐and‐plate,” to prepare porous electrodes by direct ink writing followed by conformal metal coating.
Dylan M. Barber+12 more
wiley +1 more source