Results 61 to 70 of about 326,006 (283)

0.3-V, 357.4-nW Voltage-Mode First-Order Analog Filter Using a Multiple-Input VDDDA

IEEE Access, 2023
In this paper, a new versatile first-order voltage-mode analog filter using a single multiple-input voltage differencing differential difference amplifier for extremely low-voltage supply and low-frequency applications is presented.
Fabian Khateb, Montree Kumngern, Tomasz Kulej, Viera Stopjakova, Costas Psychalinos   +4 more
doaj   +1 more source

Self‐Similar Blowup for the Cubic Schrödinger Equation

Communications on Pure and Applied Mathematics, EarlyView.
ABSTRACT We give a rigorous proof for the existence of a finite‐energy, self‐similar solution to the focusing cubic Schrödinger equation in three spatial dimensions. The proof is computer‐assisted and relies on a fixed point argument that shows the existence of a solution in the vicinity of a numerically constructed approximation.
Roland Donninger, Birgit Schörkhuber
wiley   +1 more source

A Noise-Shifting Differential Colpitts VCO [PDF]

, 2002
A novel noise-shifting differential Colpitts VCO is presented. It uses current switching to lower phase noise by cyclostationary noise alignment and improve the start-up condition.
Aparicio, Roberto, Hajimiri, Ali
core  

Multi-standard programmable baseband modulator for next generation wireless communication

, 2010
Considerable research has taken place in recent times in the area of parameterization of software defined radio (SDR) architecture. Parameterization decreases the size of the software to be downloaded and also limits the hardware reconfiguration time ...
Chakrabarti, Indrajit, Hatai, Indranil
core   +2 more sources

Imaging through turbulence with a quadrature-phase optical interferometer [PDF]

, 2005
We present an improved technique for imaging through turbulence at visible wavelengths using a rotation shearing pupil-plane interferometer, intended for astronomical and terrestrial imaging applications.
Dimotakis, Paul E., Kern, Brian, Lang, Daniel B., Martin, Chris, Thessin, Rachel N.   +4 more
core   +1 more source

The Instability and Response Studies of a Top-Tensioned Riser under Parametric Excitations Using the Differential Quadrature Method

Mathematics, 2022
The differential quadrature method (DQM) is a numerical technique widely applied in structure mechanics problems. In this work, a top-tensioned riser conveying fluid is considered.
Yang Zhang, Qiang Gui, Yuzheng Yang, Wei Li   +3 more
doaj   +1 more source

Digital Rights Activism in Multilevel Governance

European Policy Analysis, EarlyView.
ABSTRACT Multilevel governance (MLG) without a clear hierarchical structure can create power imbalances among various actors, particularly in settings with overlapping jurisdictions and policy areas. This dynamic is especially pronounced in Internet governance, which faces a complex interplay of domestic laws, state interdependence, and heightened ...
Alison Harcourt
wiley   +1 more source

Quadrature Solution for Fractional Benjamin–Bona–Mahony–Burger Equations

Fractal and Fractional
In this work, we present various novelty methods by employing the fractional differential quadrature technique to solve the time and space fractional nonlinear Benjamin–Bona–Mahony equation and the Benjamin–Bona–Mahony–Burger equation.
Waleed Mohammed Abdelfattah, Ola Ragb, Mokhtar Mohamed, Mohamed Salah, Abdelfattah Mustafa   +4 more
doaj   +1 more source

Sustainable Optimization of Emissions and Performance in Hydrogen Port Injection Diesel Engines Through Port Timing and Injection Duration Modulation

Energy Science &Engineering, EarlyView.
Optimizing hydrogen port injection in diesel engines significantly improves efficiency and reduces emissions, demonstrating a sustainable dual‐fuel strategy for cleaner transportation solutions and lower environmental impact. ABSTRACT This study evaluates a single‐cylinder hydrogen port injection (HPFI) Diesel engine by systematically varying the ...
Kaustubh R. Kapadani, Nithyananda B S, Shrishail B. Sollapur, Rajesh K, Ashish M. Dharme, Hemant K, Nagaraj Ashok, Abhijit Bhowmik   +7 more
wiley   +1 more source

Fast Spectral Collocation Method for Solving Nonlinear Time-Delayed Burgers-Type Equations with Positive Power Terms

Abstract and Applied Analysis, 2013
Since the collocation method approximates ordinary differential equations, partial differential equations, and integral equations in physical space, it is very easy to implement and adapt to various problems, including variable coefficient and nonlinear ...
A. H. Bhrawy, L. M. Assas, M. A. Alghamdi   +2 more
doaj   +1 more source