Results 31 to 40 of about 2,043,998 (325)

DePIN zur Steigerung der Resilienz von EWF-Infrastrukturen

open access: yesTH Wildau Engineering and Natural Sciences Proceedings
Kritische Infrastrukturen in den Bereichen Energie, Wasser und Nahrungsmittel (EWF) benötigen angesichts zunehmender globaler Herausforderungen neue Resilienzkonzepte. Dieser Artikel untersucht, wie Decentralized Physical Infrastructure Networks (DePIN)
Bastian Halecker, Robert Henker
doaj   +1 more source

Exact and Numerical Elastic Analysis for the FGM Thick-Walled Cylindrical Pressure Vessels with Exponentially-Varying Properties

open access: yesArchives of Metallurgy and Materials, 2016
Assuming exponential-varying properties in the radial direction and based on the elasticity theory, an exact closed-form analytical solution is obtained to elastic analysis of FGM thick-walled cylindrical pressure vessels in the plane strain condition ...
Nejad M. Zamani   +3 more
doaj   +1 more source

Applications of Multivariate Adaptive Regression Spline (MARS) for Modeling and Explaining Long Term Salinity and Total Dissolve Solid (TDS) river water Case study: Basins of khorasan jonobi [PDF]

open access: yesمخاطرات محیط طبیعی, 2013
Salinity (Ec) and Total Dissolve Solid (TDS) are considered as quality factor s of drinking water, agriculture and industry. First relation between Debite-Ec and Debite-TDS (rating function) of taken samples doing with the fitted regression models ...
majid janfeda, Hojat Rezai Pazhand
doaj   +1 more source

On exponentiating exponentiation

open access: yesJournal of Pure and Applied Algebra, 1981
It is well known that for any (small) category J, the category EnsJ of functors from J into the category of sets, is Cartesian closed (in fact it is an elementary topos, see for example Lawvere [l] or Tierney [4]). An exercise in MacLane [3, p. 961 suggests that a functor category KJ is Cartesian closed whenever K is Cartesian closed; however, it is ...
openaire   +2 more sources

Unbalanced Data Mining Algorithms from IoT Sensors for Early Cockroach Infestation Prediction in Sewer Systems

open access: yesAlgorithms
Predictive pest management in urban sewer networks represents a sustainable alternative to reactive, biocide-based methods. Using data collected through an IoT architecture and validated with manual inspections across eight manholes over 113 days, we ...
Joaquín Aguilar   +3 more
doaj   +1 more source

Is the fraction of people ever born who are currently alive rising or falling?

open access: yesDemographic Research, 2014
Background: Some journalists and demographers have asked: How many people have ever been born? What is the fraction F(t) of those ever born up to calendar year t who are alive at t? The conditions under which F(t) rises or falls appear never to have been
Joel E. Cohen
doaj   +1 more source

Distributional properties of exponential functionals of Levy processes [PDF]

open access: yes, 2012
We study the distribution of the exponential functional $I(\xi,\eta)=\int_0^{\infty} \exp(\xi_{t-}) \d \eta_t$, where $\xi$ and $\eta$ are independent L\'evy processes.
Kuznetsov, A., Pardo, J. C., Savov, M.
core   +3 more sources

Exponential gravity [PDF]

open access: yesPhysical Review D, 2009
We investigate a f(R) modification of gravity that is exponential in the Ricci scalar R to explain cosmic acceleration. The steepness of this dependence provides extra freedom to satisfy solar system and other curvature regime constraints. With a parameter to alleviate the usual fine tuning of having the modification strengthen near the present, the ...
openaire   +2 more sources

Study of flow past an exponentially accelerated isothermal vertical plate in the presence of chemical reaction [PDF]

open access: yesTheoretical and Applied Mechanics, 2010
Theoretical study of unsteady flow past an exponentially accelerated infinite isothermal vertical plate with variable mass diffusion has been presented in the presence of homogeneous chemical reaction of first order. The plate temperature is raised to
Muthucumaraswamy R., Valliammal V.
doaj   +1 more source

Exponential Metric Fields

open access: yes, 2010
The Laser Interferometer Space Antenna (LISA) mission will use advanced technologies to achieve its science goals: the direct detection of gravitational waves, the observation of signals from compact (small and dense) stars as they spiral into black ...
A. Lue   +44 more
core   +1 more source

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