Results 101 to 110 of about 446,471 (361)
Study of the optimal harvesting control for an elliptic problem with slow diffusion [PDF]
, 2007 In this paper our aim is to present a survey of known results of an optimal control problem with concave non-quadratic cost functional and a state equation arising from population dynamics.
Suárez Fernández, Antonio
core
Advanced Functional Materials, EarlyView.Aggregates of diketopyrrolopyrrole dipolar and quadrupolar systems exhibit panchromatic absorption spectra extending in the entire visible range. Upon aggregation in water and in the solid state, their fluorescence is almost completely quenched and their singlet excited state lifetime is significantly shortened.
Roberto Cantoni +10 more
wiley +1 more source
Generalized Quadratic Revenue Functions [PDF]
In this paper we focus on specification of revenue functions in their dual price space. We consider two distance functions, both dual to the revenue function: Shephard output distance function and the directional output distance function, both in price ...
Michael Vardanyan +3 more
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Single Solid‐State Ion Channels as Potentiometric Nanosensors
Advanced Functional Materials, EarlyView.Single gold nanopores functionalized with mixed self‐assembled monolayers act as solid‐state ion channels for direct, selective potentiometric sensing of inorganic ions (Ag⁺). The design overcomes key miniaturization barriers of conventional ion‐selective electrodes by combining low resistivity with suppressed loss of active components, enabling robust
Gergely T. Solymosi +4 more
wiley +1 more source
General Quadratic-Additive Type Functional Equation and Its Stability
International Journal of Mathematics and Mathematical Sciences, 2016 We investigate the general functional equation of the form f(ax+by+cz)-abf(x+y)-bcf(y+z) − acf(x+z)-a((a+1)/2-b-c)f(x)-b((b+1)/2-a-c)f(y)-c((c+1)/2-a-b)f(z)-(a(a-1)/2)f(-x) − (b(b-1)/2)f(-y)-(c(c-1)/2)f(-z)=0, whose solutions are quadratic-additive ...
Yang-Hi Lee, Soon-Mo Jung
doaj +1 more source
Powering the Future: A Cobalt‐Based Catalyst for Longer‐Lasting Zinc–Air Batteries
Advanced Functional Materials, EarlyView.A novel N‐doped graphitic shell‐encapsulated Co catalyst reveals superior bifunctional ORR/OER activity in alkaline media, empowering outstanding liquid and quasi‐solid‐state ZAB activity. The system delivers long‐term durability, a peak power density of 127 mW cm−2 and successfully powers an LED and a mini fan.
Manami Banerjee +10 more
wiley +1 more source
On quadratic Liapunov functionals for linear difference equations
Linear Algebra and its Applications, 1996 By means of a quadratic Lyapunov functional defined in an appropriate \(L_2\) space, the author studies some stability properties of vector linear difference equations of the form \[ x(t)= \sum^k_{j=1} A_j x(t- r_j), \qquad 0< r_1< r_2< \dots< r_k< \infty, \] where \(A_j\), \(j=1, 2, \dots, k\) are given \(N\times N\) real matrices.
openaire +3 more sources
Analysis of the optimal size of the government consumption [PDF]
The aim of this paper is to investigate the size of the government in 12 OECD countries. Data are gathered from Penn Tables. Clustered robust OLS estimation techniques have been used.
Josheski, Dushko +2 more
core +1 more source
Advanced Functional Materials, EarlyView.A dual‐percolative planar‐heterojunction photoactive architecture enables intrinsically stretchable organic photovoltaics that combine high photovoltaic efficiency with enhanced mechanical robustness. Abstract Intrinsically stretchable organic solar cells (IS‐OSCs) are promising candidates for wearable power sources due to their ability to deform in ...
Jin‐Woo Lee +8 more
wiley +1 more source
Advanced Healthcare Materials, EarlyView.A tunable methacrylated decellularized bone matrix hydrogel (dECM‐MA) is developed to support 3D culture of human osteoblasts. The hydrogel preserves bone‐specific ECM cues and allows precise control over mechanical properties. This system provides a customizable platform for studying osteogenic differentiation and modeling bone tissue environments for
Minne Dekker +5 more
wiley +1 more source