Results 31 to 40 of about 556,505 (312)

Limit solutions of the Chern-Simons equation

open access: yes, 2012
We investigate the scalar Chern-Simons equation $-\Delta u + e^u(e^u-1) = \mu$ in cases where there is no solution for a given nonnegative finite measure $\mu$. Approximating $\mu$ by a sequence of nonnegative $L^1$ functions or finite measures for which
Ponce, Augusto C., Presoto, Adilson E.
core   +1 more source

Accounting for 10 m Resolution Mapping for Above-Ground Biomass of Urban Trees in C40 Cities Across Eurasia Continent

open access: yesRemote Sensing
High-resolution above-ground biomass (AGB) data play a critical role in advancing low-carbon development strategies across cities. However, research on urban trees’ AGB largely relies on high-accuracy field measurements, which limits the feasibility of ...
Ge Yan   +8 more
doaj   +1 more source

Resultant geometric variation of a fixtured workpiece Part I: a simulation [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2006
When a workpiece is fixtured for a machining or inspection operation, the accuracy of an operation is mainly determined by the efficiency of the fixturing method. Variability in manufactured workpiece is hardly inevitable.
Supapan Sangnui Chaiprapat   +1 more
doaj  

Decay characterization of solutions to the Navier-Stokes-Voigt equations in terms of the initial datum [PDF]

open access: yes, 2015
The Navier-Stokes-Voigt equations are a regularization of the Navier-Stokes equations that share some of its asymptotic and statistical properties and have been used in direct numerical simulations of the latter. In this article we characterize the decay
C. Niche
semanticscholar   +1 more source

Measuring the Water Level Datum Relative to the Ellipsoid During Hydrographic Survey [PDF]

open access: yes, 2011
Hydrographic surveys are referenced vertically to a local water level “chart” datum. Conducting a survey relative to the ellipsoid dictates a datum transformation take place before the survey is used for current navigational products.
Rice, Glen, Riley, Jack
core   +1 more source

Beyond Presumptions: Toward Mechanistic Clarity in Metal‐Free Carbon Catalysts for Electrochemical H2O2 Production via Data Science

open access: yesAdvanced Materials, EarlyView.
Metal‐free carbon catalysts enable the sustainable synthesis of hydrogen peroxide via two‐electron oxygen reduction; however, active site complexity continues to hinder reliable interpretation. This review critiques correlation‐based approaches and highlights the importance of orthogonal experimental designs, standardized catalyst passports ...
Dayu Zhu   +3 more
wiley   +1 more source

DATUM in Action [PDF]

open access: yes, 2012
This collaborative research data management planning project (hereafter the RDMP project) sought to help a collaborative group of researchers working on an EU FP7 staff exchange project (hereafter the EU project) to define and implement good research ...
Childs, Sue, McLeod, Julie
core  

Probabilistic analysis of the upwind scheme for transport

open access: yes, 2007
We provide a probabilistic analysis of the upwind scheme for multi-dimensional transport equations. We associate a Markov chain with the numerical scheme and then obtain a backward representation formula of Kolmogorov type for the numerical solution.
A. Friedman   +23 more
core   +1 more source

Challenges and Future Directions in Assessing the Quality and Completeness of Advanced Materials Safety Data for Re‐Usability: A Position Paper From the Nanosafety Community

open access: yesAdvanced Sustainable Systems, EarlyView.
Nanosafety data provide a guiding example for establishing best practices in data management, aligning with FAIR principles and quality criteria. This review explores existing quality assessment approaches for reliability, relevance, and completeness, emphasizing the need for harmonization and adaptation to nanomaterials and advanced materials. The aim
Verónica I. Dumit   +43 more
wiley   +1 more source

Control Network Construction for LRO NAC Images Based on Refining Tie Points by Matching With Shaded LOLA DEM

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
The upcoming exploration activities in the lunar south pole require high-resolution mapping products to support landing site selection and navigation. The special terrain and illumination conditions in the lunar south pole pose significant challenges to ...
Sifen Wang   +12 more
doaj   +1 more source

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