Results 71 to 80 of about 2,839 (257)

Phase locked loops: design, simulation, and applications

, 2007
The Definitive Introduction to Phase-Locked Loops, Complete with Software for Designing Wireless Circuits! The Sixth Edition of Roland Best's classic Phase-Locked Loops has been updated to equip you with today's definitive introduction to PLL design ...
Best, Roland E
core  

Impedance Spectroscopy of Bifurcation Oscillations in S‐Type Self‐Oscillatory Devices

Advanced Physics Research, EarlyView.
Impedance spectroscopy (IS) reveals stability regimes and bifurcation dynamics in S‐type self‐oscillatory devices. By linking nonlinear control theory with frequency‐domain measurements, experimental signatures of oscillations, entrainment, and phase locking are directly identified.
Gonzalo Rivera‐Sierra, Roberto Fenollosa, Jenifer Rubio‐Magnieto, Nripan Mathews, Si En Ng, Juan Bisquert   +5 more
wiley   +1 more source

Acquisition Performance of a Digital Phase Locked Loop with a Four-Quadrant Arctan Phase Detector

, 2004
The acquisition performance of a digital phase locked loop (DPLL) with a four-quadrant arctan based phase detector (PD) is discussed. In the noiseless case, unlike the traditional sine function based phase locked loops, the acquisition process of the ...
Sithamparanathan, K, Reisenfeld, S
core   +1 more source

‘School is their whole world’: Teachers' perspectives on loneliness among children and adolescents from England and mainland China

British Educational Research Journal, EarlyView.
Abstract As front‐line observers and active participants in pupils' daily lives, teachers closely monitor pupils' social interactions, emotional states and behavioural changes. Their unique perspective enables them to detect problems in the social lives of their pupils that may not be immediately visible to peers, parents or mental health professionals.
Yixuan Zheng, Charlotte Bagnall, Caroline Bond, Elizabeth Birchinall, Pamela Qualter   +4 more
wiley   +1 more source

Method of Implementing Digital Phase-Locked Loops

, 1997
In a new formulation for digital phase-locked loops, loop-filter constants are determined from loop roots that can each be selectively placed in the s-plane on the basis of a new set of parameters, each with simple and direct physical meaning in terms of
Stephens, Scott A., Thomas, J. Brooks
core  

Extent, characteristics and policy applications of Key Biodiversity Areas

Biological Reviews, EarlyView.
ABSTRACT A global standard for the identification of Key Biodiversity Areas (KBAs) was published 10 years ago to provide a unified set of criteria for identifying ‘sites of significance for the global persistence of biodiversity’. We review the initiative's origins, the KBA identification process, characteristics of the current network, threats, policy
Stuart H. M. Butchart, Olivia Crowe, Tom Scott, Andrew J. Plumptre, Megan Eldred, Ellen McKee, Zoltan Waliczky, Ibrahim Al Hasani, Adrián B. Azpiroz, Daniele Baisero, Fred Barasa, Alison E. Beresford, Bezeng S. Bezeng, Charlotte Boyd, Thomas M. Brooks, Graeme Buchanan, Gill Bunting, Sofia Capellan, Neil Cox, Tim R. B. Davenport, Tammy E. Davies, Gina Della Togna, Wendy Elliott, Matt Foster, Jo Gilbert, Jonathan M. Handley, Diego Juffe‐Bignoli, Victoria R. Jones, Naomi Kingston, Jeannot Kivono, John Lamoreux, Penny F. Langhammer, James Lewis, Bruce Liggitt, Daniel Marnewick, Paul Matiku, Erin McCreless, Rachel A. Neugarten, Catherine Numa, Mark O'Brien, Madhu Rao, Ciara Raudsepp‐Hearne, Justina C. Ray, Samridhi Rijal, Jon Paul Rodríguez, Jurgis Sapijanskas, Wes Sechrest, Martin Sneary, Andrew Snyder, Konstantina Spiliopoulou, Thomas Starnes, Cecilia Tobar, Gautam Surya, Marcelo F. Tognelli, Andrew W. Tordoff, Maria G. Toscano, Yongyut Trisurat, Amy Upgren   +57 more
wiley   +1 more source

Method of implementing digital phase-locked loops

, 1993
In a new formulation for digital phase-locked loops, loop-filter constants are determined from loop roots that can each be selectively placed in the s-plane on the basis of a new set of parameters, each with simple and direct physical meaning in terms of
Stephens, Scott A., Thomas, Jess Brooks, Jr.   +1 more
core  

Circular Economy Pathways for Airport Climate Change Mitigation

Business Strategy and the Environment, EarlyView.
ABSTRACT Airport operators face growing climate‐change pressures; the circular economy offers pathways to reduce impacts and recover resources. We examine how airport operators apply the circular economy in practice. We use an exploratory qualitative multicase design based on practitioner‐generated documents (e.g., press releases and sustainability ...
Michele Oppioli, Davide Calandra, Federico Lanzalonga, Paolo Biancone   +3 more
wiley   +1 more source

Translating Circularity Into Strategy: A Governance Meta‐Capability Framework

Business Strategy and the Environment, EarlyView.
ABSTRACT Firms struggle to transition to circular economy (CE) models, often citing external barriers. Yet some firms succeed, whereas others fail: Why? We argue that success depends on a specific governance capability—a meta‐capability that allows firms to (1) sense and strategically reframe CE imperatives, (2) seize opportunities by aligning diverse ...
Felix Carl Schultz, Vladislav Valentinov   +1 more
wiley   +1 more source

Intelligent Manufacturing, Industrial Agglomeration, and Green and Low‐Carbon Development: A Nonlinear Path Test Based on the Theory of Ecological Modernization

Business Strategy and the Environment, EarlyView.
ABSTRACT Drawing upon ecological modernization theory as the analytical framework, this study employs macro‐level longitudinal tracking data covering China's major regions as research samples. It measures the green and low‐carbon development (GLCD) of manufacturing from the four dimensions—“carbon reduction, pollution mitigation, ecological expansion ...
Deng Wang, Xin Hua, Chante Jian Ding, Abdullahi D. Ahmed, Yue Liu   +4 more
wiley   +1 more source